CN101361292B - In-band rate indicator methods and apparatus - Google Patents

Abstract

Downlink traffic channel data rate options and methods of indicating to a wireless terminal a utilized downlink data rate option are described. The downlink traffic channel rate option for a segment is conveyed using an assignment signal and/or a block in the downlink traffic channel segment which is not used for user data. Downlink segment assignment signals in some implementations allocate fewer bits for rate option indication than are required to uniquely identify each option. In some implementations low rate options, e.g., using QPSK, are uniquely identified via assignment signals. Higher rate options, e.g., using QAM16 modulation, are conveyed via the distinct information block in the downlink traffic segment using a first coding/modulation method. Still higher rate options, e.g., using QAM16, QAM64, or QAM256, are conveyed via the information block in the segment using a second coding/modulation method which is applied to the rate option information.

Description

Rate indicator methods and equipment in band

Technical field

The present invention relates to be used to indicate the method and apparatus of data rate option information, various example embodiments more particularly are intended to indication and use the downlink data rate option information in wireless communication system simultaneously.

Background technology

For effectively carrying out the downlink traffic channel signaling in wireless communication system, wherein communicate by letter with a plurality of wireless terminals that are located at the diverse location place that has different channels condition and disturbance grade arbitrary preset time in base station, supports that the mass data rate options of downlink traffic channel section is useful.Usually, in the wireless communication system of supporting a plurality of district by district downlink traffic channel data rate options that section changes, the data rate option of given section is unique identification in the field of the appointment signal corresponding to the downlink traffic channel section.Yet along with supported data rate number of options increases, being exclusively used in to assign in signal increases with the desired bits number of rate options that unique indication is assigned, and represents that non-needs of expense increases.

Consider above discussion, if allow new method and apparatus to support that a large amount of downlink traffic channel data rate options and restriction will be useful for transmitting the amount of overhead that data-rate information used.Flexibly and promote that the different coding of the data rate option in order to transmit the downlink traffic channel section and/or the method and apparatus of modulation technique will be useful.

Summary of the invention

The present invention relates to be used to indicate the method and apparatus of data rate option information.The whole bag of tricks and equipment are intended to be used to indicate and use the method and apparatus of the downlink data rate option information in wireless communication system.

Some embodiment of the present invention and feature are intended to the wireless terminal method and apparatus.The subject matter that feature of the present invention and embodiment comprise unsettled claim.Other features of the present invention, embodiment and benefit also will be discussed in the application's case.

A concrete example embodiments is intended to a kind of method that operates the mobile phone of supporting a plurality of transmitted data rates options.Described exemplary methods is a kind of method of the present invention, it comprises the appointment signal that receives the appointment of indicating downlink link channel section, and by received appointment signal decoding to determine following one: 1) data rate option, it is corresponding to assigned downlink channel section, and 2) designator, the information that the section that its indication is assigned by described appointment signal comprises the data rate option of indicating the user data for being contained in assigned section.Described exemplary methods can optionally and further comprise: receive the downlink channel section of assigning; And when determining that described appointment signal comprises the designator that section that indication assigns comprises the information of indicating described data rate option information, use the first coding/decoding method by the decoding of data rate option information, described the first coding/decoding method is different from the second coding/decoding method that the user data for being contained in assigned section is decoded.At some but need not to be in whole embodiment, the step of data rate option information decoding is comprised to the modulation symbol that recovers to be contained in the block of information in described assigned downlink channel section.At some but need not to be in whole embodiment, the decoding of data rate option information is further comprised and determines that the modulation symbol recovered from described block of information comprises corresponding to first group of code or the symbol of second group of code, and each of described first group of code and second group of code is respectively corresponding to first and second different group data rate options.

In certain embodiments, the modulation symbol of first group of code can be defined as to two antipodal QPSK modulation values in the QPSK symbol constellation.In a this embodiment, by the modulation symbol of second group of code be defined as in described QPSK symbol constellation from be contained in first group of code in different two the antipodal QPSK modulation values of two QPSK modulation symbol values.In many examples, each modulation symbol recovered will comprise a plurality of encoded positions.In certain embodiments, the step of data rate option information decoding can be included in determine described recovery modulation symbol during corresponding to first group of code according to the first form by the decoding of encoded position; And according to the second form, decoded in described encoded position during corresponding to second group of code at the modulation symbol of determining described recovery.

Other steps and/or feature can be contained in various embodiment of the present invention.For the equipment of implementing each method of the present invention, also be described hereinafter, and within the scope of the invention.

Now by brief discussion according to some various example embodiments and feature of using in needing not to be all systems of the invention process.

Combination between information during some embodiment assigns signal and/or appointment signal and is contained in the assigned section of communicating by letter by use carrys out indicating downlink link data rate options information.The indicated speed option information of hereinafter discussing in the down link section, the method roughly be discussed in the context that uses down link appointment signal can be used alone, and for example needn't use and assign signal or assign the information in signal simultaneously.Perhaps, in the situation as most examples, the method that comprises rate options information in the down link section can assign the feature of signal to use in conjunction with the down link that relates to of the present invention.

Of the present invention some but in needing not to be whole embodiment, base station is supported to can be used in a large number the different downlink data rate option in the downlink traffic channel section, for example 10 or more.With the higher data rate option, compare, than the low rate option corresponding to lower data speed.Described different pieces of information speed at least some uses different code rates and/or different modulation schemes, be contained in the user data of the down link section of applying described rate options for coded/modulated.In certain embodiments, lower data rate option (for example the data rate option 0,1 and 2) is used the QPSK modulation, and higher data rate option (for example data rate option 3-10) is used QAM16, QAM64 or QAM256 modulation.

In various embodiments, base station is by assigning the downlink traffic channel section with the appointment signal.According to described embodiment, each appointment signal can be corresponding to assigned one or more sections.Therefore, for each, assign signal, have at least one corresponding downlink channel section.In certain embodiments, base station can determine (for example) when make the down link section assign, when coding data rate option to be used, by the user data modulation and/or be mapped to assigned section.Can support according to the present invention the various distinct methods of the data rate option that uses to the indication of wireless terminal or wireless terminal group.In certain embodiments, the selected data rate options based on to be used is determined the method for the data rate option that indication utilizes.

According to a feature of supporting in certain embodiments of the present invention, the number of the position that the possible downlink data rate option of supporting with each base station by the downlink traffic channel section of unique identification is to be asked is compared, and assigns signal still less to be exclusively used in the rate options information that represents in a position.In some this type of embodiment, for some low data rate option at least, be encoded to the data rate option that section is assigned the corresponding downlink traffic channel section of the described appointment signal of the unique identification in appointment signal rate option information position in signal.For other data rate options, higher data rate option for example, be contained in and assign the data rate option of the appointment signal rate option information position indicating downlink link traffic channel section in signal will be contained in the specific information piece, for example be contained in predetermined group of transmission unit in assigned down link section.Normally, the specific information piece does not comprise user data, but can be including (for example) various control informations and data rate option information.Transmission unit in described specific information piece can be the transmission unit of adjacent groups, for example is positioned at the key signature that the down link section starts place, maybe can be distributed in the down link section by contiguous but known mode.

In some specific embodiment, the described specific information piece of the downlink traffic channel section that comprises the specific information piece can have a plurality of forms, and each form is corresponding to a code group group.For example, the first form can be mapped as 5 information bits that comprise 1 rate options designator bit 32 encoded positions, and wherein the pattern of right each in 16 positions of encoded position can be 00 or 11; The second form can be mapped as 8 information bits that comprise 3 rate options designator bit 32 encoded positions, and wherein the pattern of right each in 16 positions of encoded position can be 01 or 10.In some this type of embodiment, the encoded position of specific information piece is mapped to the QPSK modulation symbol.

In certain embodiments, there is the grouping of the grade of three downlink traffic channel user data/information data rate options: (i) the first lowest packet, wherein the specific information piece is not implemented in the downlink traffic channel section, and unique designation data rate options in assigning signal wherein, (ii) the second intermediate grade grouping, wherein use the specific information piece, wherein the information bit of the first number is encoded in the specific information piece, and wherein the specific information piece comprises the information bit with two data rate options of unique identification through indication, (iii) high-grade grouping depth of the night, wherein use the specific information piece, wherein the information bit of the second number is encoded in the specific information piece, described the second number is greater than described the first number, and wherein said specific information piece comprises 3 information bits that are exclusively used at least 6 data rate options of unique identification.In some this embodiment, for the first grouping, the downlink traffic channel section is used the QPSK modulation; For the second grouping, the downlink traffic channel section is that the specific information piece is partly used QPSK, and uses QAM16 for encoded part of user data; For the 3rd grouping, the downlink traffic channel section is that the specific information piece is partly used the QPSK modulation, and uses the one in QAM16, QAM64 and QAM256 for encoded part of user data.

According to the feature of each embodiment of the present invention, the Format Type of specific information piece is not specifically identified in base station, but the grouping of code allows wireless terminal to receive the specific information piece to distinguish and to identify the Format Type of the specific information piece received.In certain embodiments, wireless terminal, after determining the Format Type of specific information piece, will attempt recovering one or more information bits of specific information piece, and described information bit identification is for the data rate option of downlink traffic channel section.By using the data rate option value of recovering, correctly decipher of wireless terminal is corresponding to the modulation symbol values that receives of encoded user data, and trial recovers the user data information position by base station coding before transmission.

Although in the foregoing invention content, discussed various embodiment, should be appreciated that, may not all comprise identical feature by all embodiment, and some feature mentioned above nonessential but may need in certain embodiments.In ensuing detailed description, discuss a large amount of other features of the present invention, embodiment and benefit.

The accompanying drawing explanation

Fig. 1 is according to the present invention and the diagram of the exemplary communication system of implementing by method of the present invention.

Fig. 2 is according to the present invention and the diagram of the example base station of implementing by method of the present invention.

Fig. 3 is according to the present invention and the diagram of the exemplary wireless terminal implemented by method of the present invention.

Fig. 4 is the form of graphic extension embodiment according to the present invention downlink traffic channel rate options information.

Fig. 5 comprises the form that the embodiment according to the present invention downlink traffic channel is assigned signaling information.

Fig. 6,6A, 7 and 8 show embodiment according to the present invention downlink traffic channel section.

Fig. 9 is the form of describing according to the specific information block message of downlink traffic channel section rate options information of the present invention and correspondence.

Figure 10 is the form of the exemplary specific information piece in exemplary the first format description downlink traffic channel section used according to the invention.

Figure 11 is the form of the exemplary specific information piece in exemplary the second format description downlink traffic channel section used according to the invention.

The information that Figure 12 comprises the first code group that exemplary specific information piece, identification be associated with exemplary the first form, and identification there is the information of the second code group of exemplary the second form.

Figure 13 is mapping and encoded mapping to modulation symbol of exemplary that the exemplary information bit of the specific information piece of exemplary the first form graphic extension downlink traffic channel section used according to the invention is processed encoded position.

Figure 14 is the mappings to modulation symbol of the mapping that encoded position is processed of the exemplary information bit of the specific information piece of exemplary the second form graphic extension downlink traffic channel section used according to the invention and the encoded position of exemplary in conjunction with 15.

Figure 16 graphic extension is according to the exemplary downlink traffic channel section of each embodiment of the present invention and the series connection of modulation symbol.

Figure 17 is the flow chart that operates the exemplary methods of base station according to the present invention.

Figure 18 is the flow chart of the exemplary methods of operate wireless terminating machine according to the present invention.

Embodiment

Fig. 1 is according to the present invention and the diagram of the exemplary communication system 100 implemented by the inventive method.System 100 comprises the Apparatus and method for be intended to following method improvement downlink communication: support a plurality of options of different downlink data rate option, and send the selected downlink data rate of fixing line link Traffic Channel section to effective means according to the present invention.Example system 100 can be (for example) Orthodoxy Frequency Division Multiplex (OFDM) multi-address radio communication system.System 100 comprises a plurality of communities (community 1 102, community M 104).Each community (community 1 102, community M 104) represents respectively the wireless coverage area of respective base station (BS 1 106, BS M 108).Comprise a plurality of wireless terminals (WT) (WT 1 110, WT N 112, WT 1 ' 114, WT N ' 116) in system 100.Described WT at least some is mobile node (MN); MN can run through system 100 and be moved, and the wireless link of foundation and different B S, and described BS is corresponding to current the located community of WT wherein.In Fig. 1, (WT 1 110, WT N 112) is coupled to BS 1 106 via wireless link (118,120) respectively; (WT 1 ' 114, WT N ' 116) is coupled to BS M 108 via wireless link (122,124) respectively.

BS (106,108) is coupled to network node 126 via network link (128,130) respectively.Network node 126 is coupled to other network nodes via network link 132, such as router, other base stations, aaa server node, family expenses agent node etc. and/or internet.Network link 128,130,132 can be (for example) optical fiber link.Network node 126 and network link the 128,130, the 132nd, link together and provide connective by the various BS in different districts in order to be positioned at the part of the backhaul network that the WT of Yi Ge community can communicate by letter with the peer node of different districts.

System 100 is shown as has the wherein community of Yi Ge sector, every community.Method and apparatus of the present invention is also applicable to having for example, system more than a sector (，Mei community 2,3 or more than 3 sectors) of every community, and has the system of the different number of sectors in every community in the different piece of system.In addition, method and apparatus of the present invention also is applicable to many non-cellular radio communication systems that comprise at least one base station and a wireless terminal.

Fig. 2 is according to the present invention and the diagram of the example base station 200 implemented by the inventive method.Exemplary BS 200 is sometimes referred to as access node.BS 200 can be any one of BS (106,108) of the system 100 of Fig. 1.Example base station 200 comprises receiver 202, transmitter 204, processor 206, I/O interface 208 and the memory 210 be coupled via bus 212, and described different elements can pass through bus 212 interchange of data and information.

Receiver 202 is coupled to reception antenna 203, and wherein BS 200 can be by reception antenna 203 from a plurality of wireless terminal receiving uplink signals.Receiver 202 comprises the decoder 214 for the encoded uplink signal decoding by received.

Transmitter 204 is coupled to transmitting antenna 205, wherein by transmitting antenna, down link signal is sent to a plurality of wireless terminals.Transmitter 204 comprise for the transmission before by the encoder of information coding 216.Down link signal comprises the appointment signal, the appointment of assigning signal to comprise the downlink traffic channel section.Described appointment signal comprises rate options information.Down link signal also comprises downlink traffic channel section signal.Some downlink traffic channel section comprises the specific information piece, and described specific information piece comprises the rate options information corresponding to the data rate of the user data for the downlink traffic channel section.

I/O interface 208 is coupled to other network nodes by BS 200, for example router, other base stations, aaa server node, family expenses agent node and/or internet.I/O interface 208 provides in order to the interface of interconnectivity to be provided between the node in different districts to backhaul network.

Memory 210 comprises routine 218 and data/information 220.Processor 206 (for example CPU) executive routine 218, and operate BS 200 and implement method of the present invention by the data/information 220 in memory 210.

Routine 218 comprises Communications routines 222 and base station control routine 224.Communications routines 222 is implemented the various communication protocols of being used by BS 200.

Base station control routine 224 is controlled the operation of BS 200, comprises the embodiment that receiver 202 operates, transmitter 204 operates, I/O interface 208 operates, reaches the inventive method.Base station control routine 224 comprises scheduler module 226, downlink traffic channel section rate options determination module 228, appointment signal rate option coding module 230, downlink traffic channel section coded/modulated module 232, downlink signaling module 238, reaches uplink signalling module 240.The specific information piece that downlink traffic channel section coded/modulated module 232 comprises user data coding/mapping block 238 and comprises rate options information, coding/mapping block 240 specific information piece modules 240 comprise the first format module 242 and the second format module 244.

Scheduler module 226 (for example scheduler) for example, to wireless terminal user scheduling uplink and downlink channel air link resources, section.Scheduler 226 operates to comprise according to scheduling strategy the downlink traffic channel section is assigned to the particular wireless station machine in a plurality of wireless terminals.Different downlink traffic channel sections can have different qualities, for example for the shorter duration, there is more multi-tone or for there is still less tone than long duration, and scheduler can be considered these differences when determining which downlink traffic channel should to be assigned to which user.Scheduler 226 can assessment (for example using the channel condition feedback report) and/or level of interference based on the data volume assessment to WT to be transmitted, priority level, subscriber's layer grade, time delay consideration, channel condition (for example be assessed, use is from the feedback information of WT, for example beacon rate reports information) and distribute to wireless terminal at a time a plurality of downlink traffic channel sections of naming a person for a particular job.Each tone transmits signal during being used in the OFDM symbol transmission time periods.

For example, determine the rate options that is ready to use in the downlink traffic channel section a plurality of data rate options that downlink traffic channel section rate options determination module 228 () and scheduling operation are supported from the base station of down link in phase, wherein each data rate option is corresponding to a code rate and modulation scheme.For example, example system can be supported 11 different pieces of information rate options in down link, and each is all corresponding to the information bit of varying number to be encoded in the mac frame of varying number, downlink traffic channel section, and specific modulation planisphere; Different modulating planisphere (for example QPSK, QAM16, QAM64, QAM256) is for transmitting at least encoded position of the user data of some different rates option.For example, three minimum data rate options can be used QPSK, next four data rate options the highest can be used QAM16, and next two data rate options the highest can be used QAM64, and next two data rate options the highest can be used QAM256.Except the data rate option of determining the downlink traffic channel section, module 228 is controlled the control stream to other modules based on determined speed.For example, in certain embodiments, for low data rate option, for example use the rate options 0,1 and 2 of QPSK, and never call specific information piece module, because do not implement described specific information piece.

Assign signal rate option coding module 230 by downlink traffic channel rate options information coding in the appointment signal corresponding to the downlink traffic channel section.For some rate options (for example, use the rate options 0,1 or 2 of QPSK), actual rate options is encoded to and assigns in signal, and for example, to some other rate options (rate options 3-10), will be such as information codings such as bit patterns (such as 11) to being in appointment signal in the specified field of rate information, wherein the actual rate options of assigning of rate information indication will be transmitted in the specific information piece, the part that described specific information piece is the downlink traffic channel section and rate options will be in specified scopes, for example, in rate options 3-10.

Downlink traffic channel section coded/modulated module 232 is carried out coding and the modulation operations of downlink traffic channel section.User data coding and mapping block 238 are encoded to the user data information position in encoded position according to code rate and corresponding to the code for the definite downlink traffic channel data rate option of described section.User data and mapping block 238 also are mapped to modulation symbol values according to the modulation constellation corresponding to for downlink traffic channel section established data rate options by encoded position.User data coding/mapping block 238 also makes modulation symbol values be associated with the key signature of section.In certain embodiments, for low data rate option, for example use the data rate option 0,1,2 of QPSK, for each key signature of section distributes the modulation symbol corresponding to encoded user data, and to the higher data rate option, for example, for most key signatures (, 656/672) of section distribute the modulation symbol values corresponding to encoded user data, and be that a small amount of key signature (for example, 16/672) distributes the modulation symbol corresponding to the specific information piece.

The specific information piece that comprises rate options information, coding/mapping block 240 is carried out coding, mapping and the modulation operations about the specific information piece of downlink traffic channel section.Specific module 240 supported two different operational formats, and comprises the first format module 242 and the second format module.Coding, mapping and modulation operations that the first format module 242 is for example carried out, about first group (rate options 3-4) of data rate option, and coding, mapping and modulation operations that the second format module 244 is for example carried out, about second group (rate options 5-10) of data rate option, the data rate of the second group is higher than the data rate of the first group.For example, the first format module 242 can be encoded to one group of 5 information bit that comprises a data speed position in one group of 32 information bit; Can use the code based on Reed-Muller, and the encoded hyte produced can be 16 two right, wherein each is to all having value 00 or 11.The value of a described data speed position can be used for assigned rate option 3 or 4 whether for the user data part of downlink traffic channel section.Continue described example, the second format module 244 can be encoded to one group of 8 information bit that comprises 3 data speed positions in one group of 32 information bit; Can also use the code based on Reed-Muller, and the encoded hyte produced can be 16 two right, wherein each is to all having value 01 or 10.Whether the value of described three data speed positions can be used for (for example) and for example, comes assigned rate option 5,6,7,8,9 or 10 for the user data part of downlink traffic channel section by two possibilities that just are being retained (, further strengthening and/or add other speed). Module 242 or 244 is mapped to produced encoded position the modulation symbol values of QPSK modulation constellation, for example described group 32 encoded positions is mapped to 16 modulation symbol values of described section.Module 42 or 244 also makes modulation symbol values be associated with the key signature of the specific information piece of downlink traffic channel section.

The feature according to some embodiment of the present invention, the code rate of the first format module 242 (for example, an encoded position, 3 information bit-32) lower than the code rate of the second format module 244 (for example, an encoded position, 5 information bit-32), and the data rate of the user profile be associated with the use of the first format module 242 (for example, the data rate of the user profile data rate option 3 or 4 corresponding to 848-1056 information bit) be associated lower than the use with the second format module 244 (for example, data rate option 5-10 corresponding to 1264-3760 information bit).According to another feature of some embodiment of the present invention, the first format module 242 produces one group of modulation symbol values, and described group of modulation symbol values separated with the described group of modulation symbol values produced by the second format module.For example, the first format module 242 can produce one group of 16 QPSK modulation symbol values by the first two of four described in one group four possible QPSK modulation symbol values when carrying out, and described the first two value represents two quadrants that diagonal angle is put mutually in complex plane.Equally, the second format module 244 when carrying out, can use latter two (, the QPSK clump described four may the QPSK modulation symbol values two of residues) produce one group of 16 QPSK modulation symbol values.

Downlink signaling module 238 control transmitter 204 and the operation of encoder 204 with transmission package down link signal, pilot signal, the downlink communication section assignment information signal that comprises the data rate option information and the downlink traffic channel section signal containing beacon signal, described downlink traffic channel section at least some comprises the specific information piece, described specific information piece comprises the rate options for the user profile of downlink traffic channel section.

The operation that downlink signaling module 240 is controlled receivers 202 and decoder 214 thereof with from a plurality of WT, receive and pack processing containing the uplink signal of resource request, channel quality reporting, jamming report and uplink traffic channel signals.

Data/information 220 comprises many group WT data/information 246 (WT 1 data/information 250, WT N data message 252) and system data/information 248.The zone field 259 that WT 1 data/information 250 comprises user data 253, WT identifying information 254, device/session/resource information 255, downlink user data amount 256, channel quality information 257, dl interference estimated information 258 and downlink allocation.

User data 250 including (for example) the data/information that represents speech, text or video, receive and be intended to be forwarded to the user data/information of WT 1 peer node in communication session with WT 1 from WT 1 on the uplink traffic channel section.User data 250 can also comprise the peer node that is derived from WT 1 and be sent to the user data/information of WT 1 via downlink traffic channel section signal.

WT identifying information 254 is including (for example) being assigned the existing base station that reaches the IP address be associated with WT 1 by user identifier.Device/session/resource information 254 comprises up link and down link section, for example by scheduler module 226, distributed to the Traffic Channel section of WT 1, and the session information that comprises address and about the routing iinformation of WT 1 peer node in communication session with WT 1.

Channel quality information 257 comprises from the institute's receive channel quality report from WT 1 information that obtains or derive, and from the measurement of the uplink signal from WT 1 and assessment definite channel quality information.The base station estimation that dl interference estimated information 258 comprises the potential interference grade, expection for example, is transmitted and is produced to WT 1 corresponding to the expected transmit powers grade of the potential rate options of difference and/or determined rate options by basis on () downlink traffic channel section.

The amount of downlink user data 256 is to use BS 200 measurements of the current information that can use BS 200 to the current downlink transmission needs of WT1.The amount of downlink user data 256 can be used to determine the downlink traffic channel section number to WT1 to be allocated by scheduler module 226.

(for example) according to the current appointment to WT1, the zone field 259 that down link is assigned can comprise the zone field (section 1 information 260, section N information 261) of one or more groups.The rate options 263 that section 1 information 260 comprises section identifier 262, assign, assign signal message 264, user data 266, encoded user data 267, modulation symbol values 268, and comprise specific block message 269 for some according to the section of the rate options 263 of assigning.

For example, in a plurality of downlink traffic channel sections of section identifier 262 (, Sector Index numbering) from the down link timing architecture described downlink traffic channel section of identification.The rate options of distributing is to be the definite institute's specified data rate options of described downlink traffic channel section by module 228.Assign signal message 264 to comprise encoded rate information 265.The information that the speed 2633 that encoded rate information 265 comprises the appointment of appointment reality or identification will be used the specific information piece in the downlink traffic channel section (for example, two positions), the information that described specific information piece comprises the rate options 263 that identification assigns.User data 266 comprises user information bit, for the downlink traffic channel section corresponding to code rate with corresponding to the code of assigned rate options 263, described user information bit is encoded in encoded user data 267.Modulation symbol values 268 comprises by the rate options corresponding to assigned encoded user bit 267 is mapped to and is used for the modulation symbol values produced on the downlink traffic channel section, for example, described modulation constellation is the one in QPSK, QAM 16, QAM64, QAM256.Whether the number of the modulation symbol values 268 of downlink traffic channel section can be according to comprising the specific information piece and change.

Specific information block message 269 inclusion information positions 270, information bit 270 comprises rate options information 271, bits of coded 272 and modulation symbol values 273.For example, if section is corresponding to arbitrary higher group of rate options, can use specific information block message 269, be for example the data rate option 3-10 that encoded user data is used QAM16, QAM64 or QAM256 modulation constellation, can, for than the low rate option, ignoring piece 269, be for example the data rate option 0-2 that encoded user data is used the QPSK modulation constellation simultaneously.The input of information bit 270 representatives to the specific information piece is for example 5 information bits, or is 8 information bits when using the second form when using the first form.Information bit 270 comprises rate options information bit 271, for example for example, between two possible rate options (rate options 3 or 4), with the first form, carry out 1 position of appointment, or 3 positions of for example, carrying out appointment between 6 possible rate options ( rate options 5,6,7,8,9,10) wherein retain and will carry out with the second form two other rate options of appointment.In rate options information 271, the speed of appointment is corresponding to assigned rate options 263.Encoded position 272 is that (for example) used code and code rate for example, corresponding to one group of information bit 270 encoded position, 32 encoded positions according to assigned rate options.Determine encoded position 272 according to the first or second Format Type with two different coding methods, each Format Type is corresponding to a code group group.The QPSK value of symbol that modulation symbol values 273 representative is produced by the mapping of encoded position 272, for example 16 QPSK values of symbol.According to the feature of each embodiment of the present invention, for given downlink traffic channel section, modulation symbol values 273 is taken out two values from described group of four probable values, and described two values represent in complex plane the quadrant that diagonal angle is put mutually or the position of putting mutually.

System data/information 248 comprises uplink/downlink regularly and frequency structure information 274, downlink traffic channel are assigned signaling information 275, downlink traffic channel rate options/coded/modulated information 276 and specific block message 277.

Uplink/downlink timing and frequency structure information 274 are including (for example) symbol timing information, the tone pitch information, the uplink tone number, the downlink tone number, uplink carrier frequency, downlink carrier frequency, uplink bandwidth, downlink bandwidth, the uplink tone group, downlink tone set, up link is jumped tone information, up link is suspended information, down link is jumped tone information, downlink traffic section structure information, uplink service section structure information, repeatability timing architecture (symbol time interval and the symbol time interval is grouped into to (for example) suspends for example, half time slot, time slot, super time slot, the beacon time slot, overtime groove etc.), assign the relation between signal and downlink traffic channel section.Downlink traffic channel section structure packets of information for example, is grouped into the information in section by air link resources (key signature) containing identification, with identification, the air link resources of section further is grouped into to the information in sub-segments, for example, at the downlink traffic channel section during corresponding to the one in the data rate option that uses the specific information piece, which key signature of identification downlink traffic channel section is the information for encoded user data block for which key signature of specific information piece and same downlink traffic channel section.

Downlink traffic channel assigns signaling information 275 to comprise the information that the significance bit of each interior field of signal and the different probable values in described field is assigned in identification, for example, about assigning the information of the downlink traffic channel section rate options son field in signal.For example, assign in signal and can transmit three possible inferior grade rate options corresponding to 2 bit rate option subfields of downlink traffic channel section, for example, as bit pattern (00, 01 or 10) indicated rate options 0, 1, 2, maybe can transmit the rate options of having used a higher level, and will in the specific information piece, transmit the part of actual speed of assigning as the downlink traffic channel section, for example bit pattern (11) can transmit the one of having used in rate options (3-10), and actual speed rate is contained in the specific information piece of downlink traffic channel section.

Downlink traffic channel rate options/coded/modulated information 276 comprises the information of identification by each downlink traffic channel data rate option of base station support, the number of mac frame is corresponding to each data rate option, the number of information bit is corresponding to each data rate option, code word size and the code that uses are corresponding to each data rate option, and the modulation constellation of using is corresponding to each data rate option.

Specific information block message 277 comprises the first formatted data/information 278 and the second formatted data/information 279.The first formatted data/information 278 comprises which downlink traffic channel data rate option of identification and the information that the first form of specific information piece, the information bit field of the first form specific information piece, the position size of each field, the decipher that the place value in each field is provided, coding method use etc. are associated, and such as comprising code, produces matrix, information is mapped to the bits of coded of modulation symbol, the modulation scheme of using etc.For example, the first form may be associated with two downlink traffic channel rate options 3 and 4; The first form specific information piece may transmit 5 information bits that comprise single bit rate option indicator and 4 through-put power indicator value, described single bit rate option indicator indicated speed option 3 or 4, described coding can and can cause based on the Reed-Muller code 32 encoded positions are mapped to 16 QPSK modulation symbol values.

The second formatted data/information 279 comprises the information which downlink traffic channel data rate option of identification is associated with the second form of specific information piece, the information bit field of the second form specific information piece, the position size of each field, the decipher that the place value in each field is provided, coding method use etc., for example, comprising code produces matrix, information is mapped to the bits of coded of modulation symbol, the modulation scheme of using etc.For example, the second form may with there are 6 downlink traffic channel rate options 5-10 of two reservation flag and be associated; The second form specific information piece may transmit 8 information bits that comprise 3 bit rate option indicator and 5 through-put power indicator value, which rate options wherein said 3 bit rate option indicator indications have assigned from the scope of rate options 5-10, described coding can be based on the Reed-Muller code, and can cause 32 encoded positions are mapped to 16 QPSK modulation symbol values.First and second formatted data/information 278,279 can be associated from different code groups respectively, (for example) for example, in order to be different from the modulation symbol values corresponding to the second form specific information piece corresponding to the possible QPSK modulation symbol values of the first form specific information piece, in the different quadrants in complex plane.

Fig. 3 is according to the present invention and uses the diagram of the exemplary wireless terminal 300 of method enforcement of the present invention.WT 300 can be arbitrary WT (100,112,114,116) of the system 100 of Fig. 1.Exemplary WT 300 comprises receiver 302, transmitter 304, processor 306, user I/O device 308 and the memory 310 be coupled via bus 312, and various elements can pass through bus 312 interchange of data and information.

Receiver 302 is coupled to reception antenna 303, and WT 300 receives and comprises the appointment of downlink traffic channel section and the down link signal of downlink traffic channel section signal from BS 200 by reception antenna 303.Receiver 302 comprises decoder 314, and it is the down link signal decoding in order to receiving from BS 200 by WT 300.

Transmitter 304 is coupled to transmitting antenna 305, and the uplink signal that WT 300 will comprise channel quality reporting, jamming report, uplink resource request message and uplink traffic channel section signal by transmitting antenna 305 is transmitted into BS 200.In certain embodiments, use the same antenna as transmitting antenna 305 and reception antenna 303.Transmitter 204 comprises the encoder 316 of uplink data/information being encoded for before transmission.

User I/O device 308 is including (for example) microphone, loud speaker, keypad, keyboard, mouse, touch-screen, camera, display, alarm, vibrating device etc.Various user I/O devices 308 are for inputting the user data/information of plan for the peer node of WT 300, and output is from the data/information of the peer node reception of WT 300.In addition, user I/O device 308 by the operator of WT 300 in order to initial various functions, such as switching on, cut off the power supply, called out, end call etc.

Memory 310 comprises routine 318 and data/information 320.(for example, CPU) executive routine 318, and control the operation of WT 300 and implement method of the present invention by the data/information 320 in memory 310 for processor 306.

Routine 318 comprises Communications routines 322 and wireless terminal control routine 324.Communications routines 322 is implemented the various communication protocols of being used by WT 300.Wireless terminal control routine 324 is controlled the operation of WT 300, the operation that comprises receiver 302, transmitter 304 and user I/O device 308.Wireless terminal control routine 324 comprises assigns signaling module 326, downlink communication channel information to recover module 328, downlink signaling module 330 and uplink signalling module 332.

Assign signaling module 326 to process the appointment signal received: identification is assigned to the section identifying information of the downlink communication channel section of assigning of WT 300, and recovery is contained in the rate information of assigning in signal, specific the assigned data rate of the downlink communication channel section of for example assigning, or the special speed that recovers the described downlink communication channel section of indication will be contained in the information in the specific information piece of downlink communication channel section.Assign signaling module 326 to comprise and assign decoder module 327 and assign type determination module 329.Assign decoder module 325 by received appointment signal decoding.Assign type determination module 329 to determine that assigning is the first kind, its indication is assigned by the appointment signal corresponding to the data rate option of downlink channel section; Or described appointment refers to the Second Type of the number of distributing letters, it comprises designator, and the indication of described designator comprises indication by the section of assigning signal to assign, and to be contained in the data rate option that the user data in described section uses be the information of being assigned by described appointment signal.Downlink traffic channel information is recovered module 334 and is comprised specific information piece module 334 and user data module.Specific information piece module 334 executable operations recover to be contained in to control the information comprised in the specific information piece of the downlink traffic channel section that is assigned to WT 300.Specific information piece module 338 comprises Format Type determination module 338, the first format module 340 and the second format module 342.Format Type determination module 338 is determined the information bit of the specific information piece of the downlink traffic channel section of which kind of Format Type to have encoded received with.The information bit that the first format module 340 is transmitted by the encoded information bit of described specific information piece with recovery when determining that the specific information piece is used the first Format Type through operation.The information bit that the second format module 342 is transmitted by the encoded information bit of described specific information piece with recovery when determining that the specific information piece is used the second Format Type through operation.For example, the first Format Type module 340 can be used for recovering from 16 QPSK modulation symbol values 5 information bits that comprise 1 rate options position when called, described 1 rate options is the special speed option in two rate options of indication, and for example the downlink traffic channel data rate option of downlink traffic channel is rate options 3 or rate options 4; And the second format module 342 can be used for from 16 QPSK modulation symbol values recovering 8 information bits that comprise 3 rate options positions when called, the indication of described 3 rate options positions is from 8 or which the particular downlink Traffic Channel rate options in a rate options still less, and for example whether the downlink traffic channel rate options of downlink traffic channel section is rate options 5,6,7,8,9 or 10.

User data module 336 through operation with from downlink traffic channel section restoring user data information bit.Determined data rate option can be used for affecting the operation of user data information recovery operation, for example controls the operation of decoder 314.For example, some data rate option (for example using the data rate option 0,1,2 of QPSK) may not used the specific information piece, and other data rate options (for example using the data rate option 3-10 of QAM16, QAM64 or QAM256) can be used the specific information piece.In some this type of embodiment, when not using described specific information piece, user data module 336 will use data rate option value from assigning signal to recover and the operation of user data information bit recovery from each modulation symbol values of downlink traffic channel section.In some this type of embodiment, when using described specific information piece, user data module 336 will use by the data rate option of the output indication of specific information piece module and with in the user data information bit recovery operates from the nonspecific modulation symbol values that key signature is associated of downlink traffic channel section.

Downlink signaling module 330 is controlled the operation of receiver 302 and decoder 314 from BS 200, to receive and to process down link signal, and described down link signal comprises downlink traffic channel section assignment messages and downlink traffic channel signals.In certain embodiments, DL signalling module 330 operates together in conjunction with assigning signalling module 326 and/or downlink traffic channel information to recover module 328.

Uplink signalling module 338 control transmitter 304 and the operation of encoder 316 with by the uplink signal coding and be transferred to BS 200, described uplink signal comprises channel quality reporting, jamming report, uplink resource request message and uplink traffic channel section message.

Data/information 320 comprises WT data/information 344 and system data/information 362.WT data/information 344 comprises the zone field 360 that user data 348, WT identification (ID) information 350, base station IDs information 352, device/talks/resource information 354, channel quality information 350, dl interference information 358 and down link are assigned.User data 348 comprises plans to be transferred to the data/information of the plan of BS 200 for the reciprocity device of WT 300 by the uplink traffic channel section by WT 300, and described reciprocity device and WT 300 communicate talks.User data 348 also comprises to be derived from WT 300 and communicates the reciprocity device of WT 300 of talks and the data/information received from BS 200 via the downlink traffic section.

The WT that wireless terminal identifying information 350 is assigned including (for example) WT IP address and BS 200 now uses user identifier.Base station identifiers information 352 comprises identifier, the value of difference particular B S network attachment point in a plurality of different BS network attachment point from wireless communication system for example, and wherein WT 300 is used described particular B S network attachment point as its current network attachment point.In certain embodiments, BS id information 346 comprises identification just by the particular sector of BS network attachment point use and/or the information of carrier frequency.Device/talks/resource information 354 comprises up link and the down link section (for example Traffic Channel section) that is assigned to WT300 and comprises about with WT 300, communicating the address of WT 300 peer node of talks and the talks information of routing iinformation.Channel quality information 350 comprises the information of measuring, deriving and estimate about the radio communication channel between WT 300 and BS 200, for example channel quality reporting of the downlink pilot signal based on received.Dl interference information 358 comprises the information that the grade of WT 300 is disturbed in identification, for example beacon ratio report.

The zone field 360 that down link is assigned comprises identification and is assigned to the information of the downlink traffic channel section of WT 300 by BS 200, for example, in received down link section assignment messages.The information that the zone field 360 that down link is assigned comprises one or more groups (section 1 information 364, section N information 366), each group is corresponding to a downlink traffic channel section that is assigned to WT 300.The appointment signal message 370 that section 1 information 364 comprises section identifier 368, comprise encoded rate information 372, the rate options of assigning 374 through determining, modulation symbol values 376, encoded user data 378, through user data 380 and (for some section) specific block message 382 of recovery.The described downlink traffic channel section of identification in a plurality of downlink traffic channel sections of section identifier 368 from down link timing and frequency structure.Assign signal message to comprise the information from received appointment signal, it is identified as the recipient by the downlink traffic channel section of section ID 368 identifications by WT 300.Encoded rate information 372 comprises the position of specifying for the appointment signal of transfer rate option information, for example, in the downlink traffic channel section for the actual data rate option of user data, or the indication that will transmit in the specific information piece of downlink traffic channel section for the actual data rate option of user data in the downlink traffic channel section.Determined is the data rate options of being assigned by BS 200 through assigning rate options 374, and for via assigning the definite downlink traffic channel section user data signal of signaling module 326 (for example, for the low rate option, as 0,1,2), or by specific information piece module 334 definite downlink traffic channel section user data signal (for example, for the higher rate option, as rate options 3-10).Modulation symbol values 376 comprise to transmit encoded user data through recovering modulation symbol values.Whether the number through recovering modulation symbol values that in certain embodiments, is used to the downlink traffic channel section to transmit encoded user data is contained in the downlink traffic channel section according to the specific information piece and for example, changes between () two grades.Encoded user data 378 comprises from the place value of the encoded position of modulation symbol values 376 mapping, and the user data 380 through recovering comprise representative from the user data of encoded user bit 378 decodings through recovering information bit.

Specific block message 382 comprises modulation symbol values 384, encoded position 386, Format Type 388 and the information bit 390 through recovering.The key signature of the specific information piece that modulation symbol values 384 comprises the downlink traffic channel section for example, through recovering modulation symbol values, 16 QPSK modulation symbol values.The encoded position 386 encoded information bits that comprise corresponding to modulation symbol values 384, for example 32 encoded positions.Format Type 388 comprises whether identification specific information piece is the information formatd by the first or second form method.According to coding method and the format used by Format Type 388, through recover information bit 390 comprise corresponding to the specific information piece of encoded position 386 through recovering information bit.For example, in certain embodiments, if use the first Format Type, recover 5 information bits, 1 position that it comprises transfer rate option information 392 and 4 positions of transmitting other information (for example power grade information), and when using the second Format Type, recover 8 information bits, 3 positions that it comprises transfer rate option information 392 and 5 positions of transmitting other information (for example power grade information).

Uplink/downlink timing and frequency structure information 393 are including (for example) symbol timing information, pitch interval information, the uplink tone number, the downlink tone number, uplink carrier frequency, downlink carrier frequency, uplink bandwidth, downlink bandwidth, the uplink tone group, downlink tone set, up link is jumped tone information, up link is suspended information, down link is jumped tone information, downlink traffic section structure information, uplink service section structure information, repeatability timing architecture (symbol time interval and the symbol time interval is grouped into to (for example) assigns the time-out between signal and downlink traffic channel section for example, half time slot, time slot, super time slot, the beacon time slot, in the relations such as overtime groove).The downlink traffic channel section comprises identification air link resources (for example key signature) is grouped into to the information in each section, and identification further is grouped into the information in sub-segments by the air link resources of a section, for example, when down link Traffic Channel section during corresponding to the one in the data rate option that uses described specific information piece, which key signature which key signature of identification downlink traffic channel section is used to specific information piece and identical downlink traffic channel section is used to the information of encoded user data block.UL/DL on the same group is not regularly and frequency structure information 393 can exist and be stored in WT 300 corresponding to the different B S 200 in wireless communication system.

Downlink traffic channel assigns signaling information 396 to comprise the information that the significance bit of each interior field of signal and the different probable values in described field is assigned in identification, for example, about assigning the information of the downlink traffic channel section rate options son field in signal.For example, assign in signal and can transmit 3 possible inferior grade rate options corresponding to 2 bit rate option subfields of downlink traffic channel section, for example, by bit pattern (00,01 or 10) rate options 0,1,2 of indication, maybe can transmit the rate options of using a higher level, and actual institute's speed of assigning will be transmitted the part as the downlink traffic channel section in the specific information piece, for example bit pattern (11) can transmit in the specific information piece that one in use rate options (3-10) and actual speed rate be contained in the downlink traffic channel section.

Downlink traffic channel rate options/decode/demodulates information 394 comprises various downlink traffic channel data rate options that identification supported by base station, corresponding to the number of the mac frame of each data rate option, corresponding to the number of the information bit of each data rate option, corresponding to the information of the code word size of each data rate option and the code that uses, the modulation constellation, demodulation method and the coding/decoding method that use corresponding to each data rate option.This information 394 is for performed demodulation and decode operation.

Specific information block message 397 comprises the first formatted data/information 398 and the second formatted data/information 399.The position of the first form that the first formatted data/information 398 comprises identification which downlink traffic channel data rate option and specific information piece, the information bit field of the first form specific information piece, each field is big or small, to decipher that in each field, each place value provides, information that the coding/decoding method of use etc. is associated, for example, inclusion information bit recovery matrix, modulation symbol are to encoded position map information, by the demodulation scheme that uses etc.For example, the first form may be associated with two downlink traffic channel rate options 3 and 4; The first form specific information piece can transmit 5 information bits, the single bit rate option indicator that it comprises indicated speed option 3 or 4 and 4 through-put power indicator value, described coding can and can cause based on the Reed-Muller code 32 encoded positions are mapped to 16 QPSK modulation symbol values.The position of the second form that the second formatted data/information 279 comprises identification which downlink traffic channel data rate option and specific information piece, the information bit field of the second form specific information piece, each field is big or small, to decipher that in each field, each position provides, information that the coding/decoding method of use etc. is associated, for example, inclusion information bit recovery matrix, modulation symbol are to encoded position map information, by the demodulation scheme that uses etc.For example, the second form may with there are 6 downlink traffic channel rate options 5-10 of two reservation flag and be associated; The second form specific information piece may transmit 8 information bits, it comprises indication and from the scope of rate options 5-10, has assigned 3 bit rate option indicator and 5 through-put power indicator value of which rate options, described coding can be based on the Reed-Muller code, and can cause 32 encoded positions are mapped to 16 QPSK modulation symbol values.The first and second formatted datas/information 398,399 can be associated from different code groups respectively, (for example) in order to be different from the modulation symbol values corresponding to the second form specific information piece corresponding to the possible QPSK modulation symbol values of the first form specific information piece, different quadrants in complex plane for example.

Base station identification information 395 comprises the information of being distinguished between different base station community, sector and/or the frequency for using in communication system.For example, can use the different value of pilot tones signal slope in the different adjacent cells in system.

Fig. 4 is the diagram of the form 400 of embodiment according to the present invention downlink traffic channel rate options information.The 1st row 402 are listed downlink traffic channel rate options (0,1,2,3,4,5,6,7,8,9,10).The 2nd row 404 are listed the mac frame number (1,2,3,4,5,6,8,10,12,14,18) that corresponds respectively to each rate options (0,1,2,3,4,5,6,7,8,9,10).The 3rd row 406 are listed the information bit number (k) (224,432,640,848,1056,1264,1680,2096,2512,2928,3760) that corresponds respectively to each rate options (0,1,2,3,4,5,6,7,8,9,10).The 4th row 408 are listed the code word size (n) (1344,1344,1344,2624,2624,2624,2624,3936,3936,5248,5248) that corresponds respectively to each rate options (0,1,2,3,4,5,6,7,8,9,10).The 5th lists the modulation constellation of using (QPSK, QPSK, QPSK, QAM16, QAM16, QAM16, QAM16, QAM64, QAM64, QAM256, QAM256) that corresponds respectively to each rate options (0,1,2,3,4,5,6,7,8,9,10).It should be noted that the code word size of the rate options of using QPSK is corresponding to 672 OFDM key signatures, and, for the rate options of using QAM16, QAM64 or QAM256 modulation constellation, code word size is corresponding to 656 OFDM key signatures.

Fig. 5 comprises the form 500 that the exemplary downlink traffic channel is assigned signaling information.The 1st row 502 comprise rate options son field value, and the rate options son field is used 2 positions.The 2nd row 504 comprise the record of identifying the connotation be associated with each rate options son field value.If the 1st row 506 identifies downlink traffic channel, assign rate options son field position to equal 00, by rate options 0 for assigned downlink traffic channel section.If the 2nd row 508 identifies downlink traffic channel, assign rate options son field position to equal 01, in assigned downlink traffic channel section, use rate options 1.If the 3rd row 510 identifies downlink traffic channel, assign rate options son field position to equal 10, in assigned downlink traffic channel field, use rate options 2.If identifying downlink traffic channel, the 4th row 512 assign rate options son field position to equal 11, in assigned downlink traffic channel section, use rate options 3,4,5,6,7,8,9 or 10, and will be in the specific information piece of assigned downlink traffic channel section the rate options of signaling reality.

Figure 16 graphic extension is according to the embodiment downlink traffic channel section of each embodiment of the present invention and the series connection of modulation symbol.The exemplary downlink traffic channel section that piece 1600 graphic extensions comprise 672 modulation symbols.The position of high effective modulation symbol of piece 1602 indicating downlink link traffic channel sections 1600, and the position of minimum effective modulation symbol of piece 1604 indicating downlink link traffic channel sections 1604.Piece 1606 graphic extension exemplary downlink traffic channel sections, the specific information piece that it comprises 16 modulation symbols 1608 and from the piece of 656 modulation symbols of mac frame and section CRC 1610.Exemplary downlink traffic channel section 1606 can be exemplary downlink traffic channel section 1600, comprise therein in the situation of specific information piece (for example, for rate options 3-10), wherein encoded user data for example, by the modulation technique transmission that is different from QPSK, QAM16, QAM64 or QAM256.The position of the highest effective modulation symbol of piece 1612 indication specific information pieces 1608, and the position of minimum effective modulation symbol of piece 1614 indication specific information pieces 1614.The position of the highest effective modulation symbol of the piece that piece 1616 indication comprises mac frame and section CRC information 1610, and the position of minimum effective modulation symbol of the piece that piece 1618 indications comprise mac frame and section CRC information 1610.Each piece of Figure 16 (1602,1604,1608,1610,1612,1614,1616 and 1618) also illustrates not in scale, but through comprising to transmit relative position information.

Fig. 6 shows two exemplary downlink traffic channel sections 600 and 650.Each exemplary downlink traffic channel section is 48 tones wide (tone 0 is to tone 47), and occupies 16 OFDM symbol transmission time interlude intervals.Each downlink traffic channel section 600,650 all occupies the air link resources of 672 OFDM key signatures, and each OFDM key signature is by a little square frame representative.Each key signature can be used for transmitting modulation symbol values.Exemplary section 600 can represent the downlink traffic channel section that uses QPSK, and for example rate options 0,1,2.Each of described 672 OFDM key signatures can be used for transmitting the encoded position corresponding to encoded user data/information position.The downlink traffic channel section of QAM16, QAM64 or QAM256 is used in exemplary section 650 representative, for example, in order to the rate options 3,4,5,6,7,8,9 or 10 of transmitting user data.656 of described 672 OFDM key signatures can be used for transmitting the encoded position corresponding to encoded user data/information position.Other 16 OFDM key signatures by specific 651 representative are used for transfer rate option information and other information, for example power control information.

Fig. 6 A shows exemplary downlink traffic channel section 660.Exemplary downlink traffic channel section 660 is 48 tones wide (tone 0 is to tone 47), and occupies 16 OFDM symbol transmission time interlude intervals.Exemplary downlink traffic channel section 660 occupies the air link resources of 672 OFDM key signatures, and each OFDM key signature is by a little square frame representative.Each key signature can be used for transmitting a modulation symbol values.Exemplary section 660 can represent the downlink traffic channel section that uses QAM16, QAM64 or QAM256, for example, in order to the rate options 3,4,5,6,7,8,9 or 10 of transmitting user data.656 of described 672 OFDM key signatures can be used for transmitting the encoded position corresponding to encoded user data/information position.Other 16 OFDM key signatures by specific representative are used for transfer rate option information and other information, for example power control information.In this embodiment of the invention, described specific is the synthetic of two smaller pieces (piece 661 and piece 662).Piece 661 and 662 each self-contained 8 OFDM key signatures, and occupy the different OFDM notation indexs position in described section.Each several part by comprising the specific information piece in different OFDM Transmission Time Intervals in the downlink traffic channel section (for example first and last OFDM symbol transmission time interval), can make the specific information piece become and not be subject to the fade condition impact, and the possibility that will successfully be recovered by wireless terminal by the information that comprises rate options information of specific information piece transmission increases.

Fig. 7 shows two exemplary downlink traffic channel sections 700 and 750.Each exemplary downlink traffic channel section is 24 tones wide (tone 48 is to tone 71), and occupies 32 OFDM symbol transmission time interlude intervals.Each downlink traffic channel section 700,750 occupies the air link resources of 672 OFDM key signatures, and each OFDM key signature is by a little square frame representative.Each key signature can be used for transmitting modulation symbol values.Exemplary section 700 can represent the downlink traffic channel section that uses QPSK, and for example rate options 0,1,2.Each of described 672 OFDM key signatures can be used for transmitting the encoded position corresponding to described encoded user data/information position.Exemplary section 750 can represent the downlink traffic channel section that uses QAM16, QAM64 or QAM256, for example, in order to the rate options 3,4,5,6,7,8,9 or 10 of transmitting user data.656 of described 672 OFDM key signatures can be used for transmitting the encoded position corresponding to described encoded user data/information position.Other 16 OFDM key signatures by specific 751 representative are used for transfer rate option information and other information, for example power control information.

Fig. 8 shows two exemplary downlink traffic channel sections 800 and 850.Each exemplary downlink traffic channel section is 12 tones wide (tone 72 is to tone 83), and occupies 64 OFDM symbol transmission time interlude intervals.Each downlink traffic channel section 800,850 occupies the air link resources of 672 OFDM key signatures, and each OFDM key signature is by a little square frame representative.Each key signature can be used for passing the method modulation symbol values.Exemplary section 800 can represent the downlink traffic channel section that uses QPSK, and for example rate options 0,1,2.Each of described 672 OFDM key signatures can be used for transmitting the encoded position corresponding to described encoded user data/information position.Exemplary section 850 can represent the downlink traffic channel section that uses QAM16, QAM64 or QAM256, for example, in order to the rate options 3,4,5,6,7,8,9 or 10 of transmitting user data.656 of described 672 OFDM key signatures can be used for transmitting the encoded position corresponding to described encoded user data/information position.Other 16 OFDM key signatures by specific 851 representative are used for transfer rate option information and other information, for example power control information.

Fig. 9 is the form 900 of describing downlink traffic channel section rate options information and corresponding specific information block message.The 1st row 902 are listed downlink traffic channel section rate options scope; Whether the 2nd row 904 identifications use the specific information piece; The 3rd row 906 described specific information pieces of identification Format Type in use.The 1st row 908 is described for downlink traffic channel rate options 0-2, does not implement the specific information piece.The 2nd row 910 is described for rate options 3-4, and the specific information piece is contained in the downlink traffic channel section, and specific information piece use first kind form, and form 1.The 3rd row 912 is described for rate options 5-10, and the specific information piece is contained in the downlink traffic channel section, and specific information piece use Second Type form, and form 2.

Figure 10 is the form 1000 of describing the exemplary specific information piece of use-case personality formula 1 in the downlink traffic channel section.Use the exemplary specific information piece of first kind form to transmit 5 information bits.The parameter that the 1st row 1002 identifications are associated with the specific information piece; The 2nd row 1004 comprise the information bit size with each parameter correlation connection; The value that the 3rd row 1006 descriptor positions can represent; The 4th row 1008 comprise the record be associated with described value.If the 1st row 1010 is described the rate indicator parameter value of equaling 0 by 1 information bit representative, the downlink traffic channel section is used rate options 3.If the 2nd row 1012 is described the rate indicator parameter value of equaling 1 by 1 information bit representative, the downlink traffic channel section is used rate options 4.The 3rd row 1014 is described the through-put power indicator value that through-put power designator parameter by 4 information bits representatives can have the through-put power of integer value n in 0 to 15 scope, indicating downlink link traffic channel section, wherein said value is nonnegative integer n, and the relative through-put power of every tone of its indicating downlink link traffic channel section has downlink traffic channel power excursion=n/4+2dB.

Figure 11 is the form 1100 of describing the exemplary specific information piece of use-case personality formula 2 in the downlink traffic channel section.Use the exemplary specific information piece of Second Type form to transmit 8 information bits.The parameter that the 1st row 1102 identifications are associated with the specific information piece; The 2nd row 1104 comprise the information bit size with each parameter correlation connection; The value that the 3rd row 1106 descriptor positions can represent; The 4th row 1108 comprise the record be associated with described value.If the 1st row 1110 is described the rate indicator parameter value of equaling 0 by 3 information bit representatives, the downlink traffic channel section is used rate options 5.If the 2nd row 1112 is described the rate indicator parameter value of equaling 1 by 3 information bit representatives, the downlink traffic channel section is used rate options 6.If the 3rd row 1114 is described the rate indicator parameter value of equaling 2 by 3 information bit representatives, the downlink traffic channel section is used rate options 7.If the 4th row 1116 is described the rate indicator parameter value of equaling 3 by 3 information bit representatives, the downlink traffic channel section is used rate options 8.If the 5th row 1118 is described the rate indicator parameter value of equaling 4 by 3 information bit representatives, the downlink traffic channel section is used rate options 9.If the 6th row 1120 is described the rate indicator parameter value of equaling 5 by 3 information bit representatives, the downlink traffic channel section is used rate options 10.If the 7th row 1122 is described the rate indicator parameter value of equaling 6 by 3 information bit representatives, this is reserve.If eighth row 1124 is described the rate indicator parameter value of equaling 7 by 3 information bit representatives, this is reserve.The through-put power designator parameter that the 9th row 1126 is described by 5 information bit representatives can have the integer value in 0 to 31 scope, the through-put power of described through-put power indicator value indicating downlink link traffic channel section, wherein said value is nonnegative integer n, and the relative through-put power of every tone of its indicating downlink link traffic channel section has downlink traffic channel power excursion=n/4+2dB.

Figure 12 comprises exemplary specific information piece 1202, and it comprises 16 exemplary modulation symbols (SO, SI, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S13, S14, SI5).5 information bits that the form 1204 identification A of group codes comprise 1 rate options designator bit for first kind form with transmission.Figure 120 8 (being the figure of complex plane) indication A of group code is used the QPSK modulation symbol values of the appointment quadrant that two diagonal angles that may be positioned at four quadrants settle, as modulation symbol values 1210 and modulation symbol values 1214 indicated.8 information bits that form 1206 identification group B-codes comprise 3 rate options designator bit for the Second Type form with transmission.Figure 121 6 (being the figure of complex plane) indication group B-code is used and may be arranged in two QPSK modulation symbol values of specifying quadrants that described four quadrant diagonal angles are settled, as modulation symbol values 1218 and modulation symbol values 1220 indicated.It should be noted that two quadrants that use for the A of group code are different from two quadrants that use for the type B code.

According to a feature of the present invention, (for example) can catch the energy of 16 modulation symbols of described specific information section via assigning signal to receive known downlink traffic channel section with the WT that comprises the specific information piece, and the identification energy just gathers along which two possible diagonal.This will identify used form, can be decoded in the encoded position of specific information piece, and can recover the original information bits that comprises one or more rate options designator bit.

According to another feature of some embodiment of the present invention, the decoding capability of mobile node can be complementary with the number of position.If mobile node can not successfully be decoded the little code be associated with the specific information piece, mobile node can not be realized using the encoded user information bit decoding of QAM 16, QAM64 or QAM256 in the downlink traffic channel section.In addition, in certain embodiments, the specific information piece encoded when transmitting the information bit of the first number and first group of data rate option be complementary, simultaneously encoded when transmitting the information bit of the second number and second group of data rate option be complementary, first group of data rate option is lower than second group of data rate option, and the first number of information bit is lower than the second number of information bit.For example, consider to use the example embodiments of 11 downlink traffic channel data rate options (0-10), wherein the minimum data rate option is data rate option 0, the user data that represents 1 frame just transmits in the downlink traffic channel section, and the peak data rate option is 10, represent that the user data of 18 frames just transmits in the downlink traffic channel section.In this kind of embodiment, for minimum group of data rate option (0-2), do not use the specific information position, and the QPSK modulation constellation is for encoded user bit; For middle-bracket data rate option (3-4), use and there is 5 information bits specific information piece of (it comprises 1 data rate options position), and use QAM 16 modulation constellation for encoded user bit; For high-grade data rate option (5-10), use has 8 information bits specific information piece of (it comprises 3 for transmitting the information bit of data rate option), and use the one in QAM16, QAM64 or QAM256 modulation constellation to be used for encoded user bit, wherein the one in QAM16, QAM64 or QAM256 is the function of data rate option.

Figure 13 is that graphic extension is processed to encoded position according to the exemplary information bit of the specific information piece of use first form of downlink traffic channel section of the present invention and the diagram 1300 of modulation symbol mapping is arrived in the encoded position of exemplary.Figure 13 graphic extension obtains processing and the mapping of exemplary first form of 32 encoded positions from 5 information bits that comprise 1 rate indicator option bit, and it is mapped to described encoded position 16 modulation symbols of described specific information piece.Information bit vector 1302 is multiplied by and produces matrix (G _6,32) 1304 to produce encoded bit vector 1306, each element of wherein said vector and matrix is all 0 or 1.Information bit vector (b ₄b ₃b ₂b ₁b ₀0) 1308 can be information bit vector 1302, wherein each b ₄..., b ₀5 one in information bit, and (the b for example of the one in described information bit ₄) can be the rate options designator bit.The generation matrix 1310 that uses the Reed-Muller code can be to produce matrix 1304, and encoded carry-out bit vector (X ₃₁, X ₃₀..., X ₀) 1312 can be encoded bit vector 1306.Piece 1314 shows that encoded position is to shining upon from vector 1312 exemplary to modulation symbol.Piece 1316 is illustrated as modulation symbol S0 and specifies the highest effective modulation symbol, and is that modulation symbol S15 specifies minimum effective modulation symbol, and each of described 16 modulation symbols all represents that encoded position is to (0,0) or (1,1).

Figure 14 and Figure 15 are that graphic extension is processed to encoded position according to the exemplary information bit of the specific information piece of use the second form in downlink traffic channel section of the present invention and (first of modulation symbol mapping is arrived in the encoded position of exemplary, second) diagram (1400,1500) of part.Processing and the mapping of Figure 14 graphic extension exemplary second form together with Figure 15, described the second form obtains 32 encoded positions from 8 information bits that comprise 3 rate indicator option bit, and described encoded position is mapped to 16 modulation symbols of specific information piece.Information bit vector 1402 is multiplied by and produces matrix (G _5,16) 1404 to produce encoded bit vector 1406, each element of wherein said vector sum matrix is all 0 or 1.Information bit vector (b ₇b ₆b ₅b ₄1) 1408 can be information bit vector 1402, wherein each b ₇... b ₄all 8 one in information bit, and 3 (for example, b in described information bit ₇, b ₆, b ₅) can be the rate options designator bit.The generation matrix 1410 that uses the Reed-Muller code can be to produce matrix 1404, and encoded carry-out bit vector (X ₁₅, X ₁₄..., X ₀) 1412 can be encoded bit vector 1406.Piece 1414 shows that encoded position is to the exemplary mapping from 1412 to 8 modulation symbols of vector.Piece 1416 is illustrated as modulation symbol S0 and specifies the highest effective modulation symbol, and each of described 8 modulation symbols all represents that encoded position is to (1,0) or (0,1).Information bit vector 1502 is multiplied by and produces matrix (G _5,16) 1504 to produce encoded bit vector 1506, each element of wherein said vector sum matrix is all 0 or 1.Information bit vector (b ₃b ₂b ₁b ₀1) 1408 can be information bit vector 1402, wherein each b ₃..., b ₀all 8 one in information bit.The generation matrix 1510 that uses the Reed-Muller code can be to produce matrix 1504, and encoded carry-out bit vector (Y ₁₅, Y ₁₄..., Y ₀) 1512 can be encoded bit vector 1506.Piece 1514 shows that encoded position is to the exemplary mapping from 1512 to 8 modulation symbols of vector.Piece 1516 is illustrated as modulation symbol S ₁₅specify minimum effective modulation symbol, and each of described 8 modulation symbols all represents that encoded position is to (1,0) or (0,1).

In certain embodiments, 3 encoded rate options positions can be contained in information bit vector 1508, rather than in information bit vector 1408, and in other embodiments, described 3 rate options designator bit can be cut apart between information bit vector 1408 and 1508, and wherein some rate options designator bit is included in each vector 1408,1508.

Consider encoded bit pattern (0, 0) through shining upon to be rendered as the QPSK modulation symbol in first quartile, for example in complex plane, there is value (1+i), encoded bit pattern (1, 1) put mutually the QPSK modulation symbol in quadrant through mapping to be rendered as second diagonal angle, for example in complex plane, there is value (1-i), encoded bit pattern (1, 0) through shining upon to represent the QPSK modulation symbol in third quadrant, for example there is value (1,-i), and encoded bit pattern (0, 1) through mapping to represent the 4th the QPSK modulation symbol in the quadrant of putting mutually with the third quadrant diagonal angle, for example in complex plane, there is value (1, i).If the specific information piece is first kind form, each of described 16 modulation symbol values will first group in forming by two in, and if described specific information piece is the Second Type form, each of described 16 modulation symbols will be in second group of forming by two, described second group with described first group of mutual exclusion.At first the wireless terminal that receives described specific information piece modulation signal can determine described signal is corresponding to which one of described two groups, can determine used corresponding Format Type, and the rate options that can use determined Format Type that signal decoding is transmitted with recovery.

Figure 17 is the flow chart 1700 that operates the exemplary methods of base station according to the present invention.Operation starts from step 1702, and wherein base station switches on and is initialised.For each downlink traffic channel section, operation proceeds to step 1704.In step 1704, base station is defined as that described downlink traffic channel section is determined wireless terminal to be assigned and for the rate options of described section, for example, corresponding to the data rate option of code rate information.In certain embodiments, base station can be assigned to the downlink traffic channel section more than a user, the part of for example as multicast, assigning or broadcasting.In certain embodiments, wherein do not exist and treat as particular downlink Traffic Channel section transmitting subscriber identify, for example, due to low system loading grade, base station can not assigned for described section, or transmit the virtual appointment that expression is not assigned for described section, and for described downlink traffic channel section, do not transmitted subsequently.Determine which wireless terminal receives the appointment of described downlink traffic channel section and the rate options of described section can be determined according to the policing rule of base station dispatcher, and can comprise the level of interference information of using, such as partly according to (such as) feedback reports such as beacon ratio report that receive from wireless terminal derive.Operation proceeds to step 1706 from step 1704.

In step 1706, base station determines that the definite rate options of institute of downlink traffic channel section is whether corresponding to the QPSK modulation, or corresponding to different modulation schemes, for example the one in QAM16, QAM64, QAM256.For example, downlink traffic channel can be supported 11 different rate options, each rate options all is associated with code rate and modulation scheme, and rate options 0,1,2 (being 3 minimum in described 11 data rate options) can be used the QPSK modulation.If the definite of step 1706 is that determined rate options is modulated corresponding to QPSK, operation proceeds to step 1708; Otherwise operation proceeds to step 1710.

In step 1708, base station by the downlink traffic channel section for example, corresponding to the rate options coding of the appointment signal (the indicated speed option 0,1 or 2) of described downlink traffic channel section.In certain embodiments, there is fixing predetermined association, will assign signal and downlink traffic channel section and down link timing architecture to link.Then, in step 1712, base station will assign signal to send to wireless terminal via downlink signaling.Operation proceeds to step 1714 from step 1712.In step 1714, base station is used and corresponding to the code rate of determined rate options, the user data of described downlink traffic channel section is encoded.Operation proceeds to step 1716 from step 1714.In step 1716, in step 1716, base station is used QPSK to be mapped to modulation symbol values from the encoded position of the operation of step 1714.Operation proceeds to step 1718 from step 1716.In step 1718, base station is through operating so that modulation symbol values is associated with the key signature of Traffic Channel section.Then, in step 1720, base station is through operating with communicating downlink Traffic Channel section signal.

Return to step 1706, if determined rate options do not correspond to QPSK modulation in step 1706 operates from step 1706 and proceeds to step 1710.For example, downlink traffic can be the downlink traffic channel section and supports 11 different rate options, and 8 data rate options (rate options 3-10) the highest can be corresponding to non-QPSK modulation.In step 1710, base station will assign in signal corresponding to the information coding of downlink traffic channel section, indicates the assigned rate option value of described downlink traffic channel section to transmit in the specific information piece of described downlink traffic channel section through operation.For example, assign signal can there is the field that comprises two positions that are associated with rate options information, and for example, when the value in described two positions is AD HOC (11), the plastics option value of described modal representation downlink traffic channel section will be transmitted in the specific information piece of described section, and the rate options value will for example, in the scope of () 3-10.Operation proceeds to step 1722 from step 1710, and wherein base station is through operating will assign signal to send to wireless terminal.Operation proceeds to step 1724 from step 1722.

In step 1724, base station is through operating to determine that determined rate options is corresponding to the first form or the second form.For example, exemplary rate options 3-10 can, through cutting apart with corresponding to two different-formats, supply for the specific information piece.The first form can for example, corresponding to lower data speed (rate options 3-4), and the second form can for example, corresponding to higher data rate (rate options 5-10).If determine that in step 1724 determined rate options is corresponding to the first dedicated block form, operation proceeds to step 1726 and 1728; If, and definite determined rate options is corresponding to the second dedicated block form in step 1724, operation proceeds to step 1730 and 1732.

In step 1726, encode the user data of downlink traffic channel section to use corresponding to the code rate of determined rate options through operation in base station, for example the one in rate options 3 or 4.Operation proceeds to step 1734 from 1726, and wherein base station is mapped to modulation symbol values with the definite rate options of institute of for example, using QAM16 according to () by encoded in step 1726 through operation.

In step 1728, base station is encoded into 32 encoded positions through operation to use the first coding method will comprise 5 information bits for the position of rate options information, for example produce 16 encoded positions right, wherein each encoded position is to being all the one in (00) or (11).In certain embodiments, use the Reed-Muller code in step 1728.

In step 1732, encode the user data of downlink traffic channel section to use corresponding to the code rate of determined rate options through operation in base station, for example the one in rate options 5,6,7,8,9,10.Operation proceeds to step 1742 from 1732, wherein base station through operation for example, to use QAM16 corresponding to rate options 5-6 according to (), corresponding to the QAM64 of rate options 7-8 or corresponding to the definite rate options of institute of the QAM256 of rate options 9-10, by encoded in step 1732, to be mapped to modulation symbol values.

In step 1730, base station is encoded into 32 encoded positions through operation to use the second coding method will comprise 38 information bits for the position of rate options information, for example produce 16 encoded positions right, wherein each encoded position is to being all the one in (10) or (01).In certain embodiments, use the Reed-Muller code in step 1730.

Operation proceeds to step 1738 from step 1728 or step 1730, and wherein base station is mapped to modulation symbol with use QPSK by described 32 encoded positions through operation.Operation proceeds to step 1740 from step 1738, wherein base station through operation so that modulation symbol values is associated with the key signature of downlink traffic channel section for dedicated block information reservation.

Operation proceeds to step 1736 from step 1734 or step 1742, and wherein base station is through operating so that the modulation symbol values in step 1734 or step 1742 is associated with the key signature of the Traffic Channel section partly retained for user data.

Operation proceeds to step 1720 from step 1740 and 1736, and wherein base station is through operating with communicating downlink Traffic Channel section signal.

At some but the downlink traffic channel section that uses in needing not to be whole embodiment of the present invention, assign signal to there is the fixedly predetermined relationship to the Traffic Channel section of assigning signal and assigning about transmission time and/or frequency.Down link in each embodiment of the present invention assigns signal can comprise corresponding to indivedual wireless terminals, now use the wireless terminal identifier of the zero-bit group of wireless terminal group or wireless terminal, wherein zero-bit group be wherein do not assign in certain embodiments existing for example, with wireless terminal but use it for the wireless terminal group of the section (, obsolete section) of not planning to carry the existing data with terminating machine.Therefore, in the situation of multicast transmission, the WT group identifier can be contained in and assign in signal, and the member of described group will listen to and use assigned downlink traffic section.

Figure 18 is the diagram of the flow chart 1800 of the exemplary methods of operate wireless terminating machine according to the present invention.Described exemplary methods starts from step 1802, and wherein wireless terminal is energized and initialization.Operation proceeds to step 1804 from step 1802, and wherein wireless terminal receiving downlink business section is assigned signal.Operation proceeds to step 1806 from step 1804.In step 1806, wireless terminal is by received appointment signal message decoding, and one or more wireless terminals of assigning are corresponding to assigned downlink traffic channel section.It can be the clean culture appointment corresponding to single WT that the downlink traffic channel section is assigned, or the appointment of downlink traffic channel section can be to assign corresponding to the multicast of WT group.Operation proceeds to step 1808 from step 1806.

In step 1808, WT determines the downlink traffic channel received assigns whether point to WT.If in step 1808, WT determines that described appointment do not point to itself, operates from step 1808 and continues to get back to step 1804, and wherein WT receives other downlink traffic channel sections and assigns signal.Yet, if in step 1808, WT determines that described appointment points to itself, operates from step 1808 and proceeds to step 1810 and step 1812.

In step 1810, WT, further by the decoding of the appointment signal message of received indicated speed option information, is contained in the indication in corresponding downlink traffic channel section to obtain data rate option indicator value or data rate option indicator value.For example, WT can support 11 downlink data rate option as shown in Fig. 4, assign signal can comprise the rate options field with 2 positions, pattern 00 designation data rate options 0 wherein, pattern 01 designation data rate options 1, pattern 10 designation data rate options 2, and pattern 11 indicated speed options will indicate in the corresponding downlink traffic channel section in specific information piece part, and rate options will be the one in rate options 3-10.

In step 1812, WT receives the Traffic Channel section signal corresponding to assigned section, to obtain the Traffic Channel section signal 1814 received.Traffic channel signal 1814 use that receive are done the input to step 1820 and/or 1828.

Operation proceeds to step 1816 from step 1810.In step 1816, WT determines through the rate options information of decoding whether indicate the specific data rate option just used in the downlink traffic channel section.If really comprise the data rate option of specific special use through the rate options information of decoding, operation proceeds to step 1818; Otherwise operation proceeds to step 1820.

In step 1818, WT determines one or more in the code rate of modulator approach, downlink traffic channel section and modulation symbol mapping according to the exclusive data rate options.For example, data rate 0 can be corresponding to QPSK modulation constellation, 224 information bits, 1344 encoded positions with corresponding to each OFDM key signature of the section of the downlink traffic channel through the mapping code position of user data; Data rate 1 can be corresponding to QPSK modulation constellation, 432 information bits, 1344 encoded positions with corresponding to each OFDM key signature of the section of the downlink traffic channel through the mapping code position of user data; Data rate 2 can be corresponding to QPSK modulation constellation, 640 information bits, 1344 encoded positions with corresponding to each OFDM key signature of the section of the downlink traffic channel through the mapping code position of user data.For example, the downlink traffic channel section can comprise 768 OFDM key signatures, and each of described 768 OFDM key signatures can be used for transmitting each the QPSK modulation symbol of the user bit through mapping code of data rate option 0,1 or 2.Operation proceeds to step 1828 from step 1818.

In step 1820, wireless terminal is used the specific information piece partial decoding of h of received Traffic Channel section signal 1814 data rate option with the user data part that obtains the downlink traffic channel section.For example, in example system, the downlink traffic channel section can comprise 768 OFDM key signatures, and, when usage data rate options 3-10, the downlink traffic channel sector division is become to comprise to the specific information piece and the user data block that comprises 752 key signatures of 16 key signatures.Step 1820 comprises sub-step 1822 and sub-step 1824.In sub-step 1822, whether what wireless terminal was determined the specific information piece belongs to first or second group of code through recovering modulation symbol.For example, the specific information piece can be used the QPSK modulation symbol, and first group of code can use QPSK modulation symbol (0,0) and (1,1), and second group of code can be used QPSK modulation symbol (1,0) or (0,1).In sub-step 1824, wireless terminal is according to the first form of first group of code or the encoded position decoding that will transmit in the specific information piece according to the second form of second group of code.For example, first group of code can, corresponding to the first form, wherein transmit 5 information bits that comprise 1 rate options designator bit, for example rate options 3 of indicator diagram 4 or data rate option 4; And second group of code can be corresponding to the second form, 8 information bits that wherein transmission comprises 3 rate indicator positions, for example one in the rate options 5-10 of indicator diagram 4.The WT that determines described code-group in sub-step 1822 is decoded according to the applicable form in step 1824, to recover data rate option indicator value.Operation proceeds to step 1826 from step 1820.

In step 1826, WT determines the modulator approach, code rate of downlink traffic channel section and one or more in the modulation symbol mapping according to determined through the designation data rate options.The mapping that for example, one in the data rate option 3-10 that, considers to indicate in the definite Fig. 4 of step 1824 and the code rate that is associated, modulation constellation (for example QAM16, QAM64 or QAM256) and encoded user bit arrive 752 key signatures of downlink traffic channel section.Operation proceeds to step 1828 from step 1826.

In step 1828, WT (for example) is via determined modulation symbol map information, modulator approach information for the demodulation code and recover the user data information position of transmitting from the code rate information of step 1818 or step 1826 acquisition the downlink traffic channel section.The processing that step 1828 comprises received traffic channel signal 1814 (those that for example are associated with user data).

This application case is intended to variously can be used for implementing based on OFDM, CDMA and/or the method and apparatus of the communication system of other communication meanss in a large number.Equally, although this paper be take ofdm system and is described as background, many method and apparatus of the present invention are applicable to the mass communication system that comprises many OFDM and/or non-cellular system.

In various embodiments, by one or more modules, implement node described herein to carry out corresponding to one or more methods of the present invention, for example signal is processed.These modules can be implemented with the combination of software, hardware or software and hardware.Many said methods or method step can be used and be contained in machine-readable medium (storage arrangement for example, as RAM, soft dish etc.) in machine-executable instruction (for example software) implement, controlling (such as) machines such as all-purpose computer that have or do not have other hardware for example, carry out all or part of said method in () one or more nodes.Therefore, among other things, the present invention also is intended to a kind of machine-readable medium that comprises machine-executable instruction, described machine-executable instruction for making (such as) machines such as processor and associated hardware carry out one or more steps of said method.

Consider above-mentioned explanation of the present invention, will be apparent to the person of ordinary skill in the field to various other versions of said method of the present invention and equipment.These versions will be regarded as within the scope of the invention.Method and apparatus of the present invention can and be in various embodiments by CDMA, Orthodoxy Frequency Division Multiplex (OFDM) and/or various other types can be used for provide the communication technology of the wireless communication link between access node and mobile node to use.In certain embodiments, access node is as implementing with the base station of the communication link of mobile node with OFDM and/or CDMA foundation.In various embodiments, mobile node is as implementing for notebook, personal digital assistant (PDA) or other mancarried devices that comprises receiver/transmitter circuitry and logic and/or routine of implementing the whole bag of tricks of the present invention.

Claims (36)

1. the method for an operate wireless terminating machine in supporting the communication system of a plurality of transmitted data rates options, described method comprises:

Receive the appointment signal that indicating downlink link channel section is assigned; And

The appointment signal of described reception is decoded to determine the one with lower: 1) data rate option, it is corresponding to assigned downlink channel section, and 2) designator, it has indicated the described section of being assigned by described appointment signal to include information, and this information indication is used for the described data rate option of the user data that assigned described section comprises.

2. the method for claim 1, it further comprises:

Receive the downlink channel section of assigning; And

Comprise designator at definite described appointment signal, and when the described section that this designator is assigned comprises the information of indicating described data rate option information, use the first coding/decoding method to be decoded to data rate options information, described the first coding/decoding method is different from second coding/decoding method of being decoded for the user data to being contained in assigned described section.

3. method as claimed in claim 2, the modulation symbol that the wherein said step that data rate options information is decoded comprises the block of information comprised in the downlink channel section that recovers described appointment.

4. method as claimed in claim 3, the wherein said step that data rate options information is decoded further comprises:

Determine that the described modulation symbol recovered from described block of information comprises corresponding to first group of code or the symbol of second group of code, each in described first and second group code corresponds respectively to first and second different group data rate options.

5. method as claimed in claim 4, wherein be defined as the modulation symbol of described first group of code two antipodal QPSK modulation values in the QPSK symbol constellation.

6. method as claimed in claim 5, wherein be defined as the modulation symbol of described second group of code two antipodal QPSK modulation values different from described two the QPSK values of symbol that comprise in described first group of code in described QPSK symbol constellation.

7. method as claimed in claim 4, wherein often all comprise a plurality of encoded positions once the modulation symbol recovered; And

The wherein said step that data rate options information is decoded further comprises:

When determining the described modulation symbol through recovering corresponding to described first group of code, according to the first form, decoded in described encoded position; And

When determining the described modulation symbol through recovering corresponding to described second group of code, according to the second form, decoded in described encoded position.

8. method as claimed in claim 7, wherein said first and second group code is based on the code of Reed-Muller.

9. method as claimed in claim 7, the relation between wherein said first and second encoded position of form indication and at least data rate option information by described encoded position transmission.

10. method as claimed in claim 9, wherein said the first form has the information bit of the first total number;

Wherein said the second form has the information bit of the second total number, and described the second total number is greater than described the first total number;

The information bit of wherein said the first total number comprises the position for the 3rd number of transfer rate option information; And

The information bit of wherein said the second total number comprises the position for the 4th number of transfer rate option information.

11. method as claimed in claim 10, wherein said the first total number is 5;

Described the second total number is 8;

Described the 3rd number is 1; And

Described the 4th number is 3.

12. method as claimed in claim 11, wherein said first and second form is further indicated the relation between encoded position and through-put power designator.

13. method as claimed in claim 7, it further comprises that the user data transmitted in to the downlink channel section in described appointment according at least one in the described modulator approach through decoded data rate options indication, code rate and modulation symbol mapping is decoded.

14. method as claimed in claim 7, the described of wherein said block of information is the symbol through the QPSK modulation through modulation symbol.

15. method as claimed in claim 14, wherein used the described user data comprised in QAM16 or the downlink channel section of higher QAM modulation to described appointment to carry out the QAM modulation.

16. method as claimed in claim 2, it further comprises:

When the definite data rate option corresponding to assigned downlink channel section of the decoding to described appointment signal:

According to the described rate options information through decoding, be that assigned described downlink channel section is determined at least one in modulator approach, code rate and modulation symbol mapping.

17. method as claimed in claim 16 wherein, when the definite data rate option corresponding to assigned downlink channel section of the decoding to described appointment signal, is further carried out following steps:

By by described, according to the described rate options information through decoding, at least one the down link section that is applied to whole appointment in the definite modulator approach of the described downlink channel section of assigning, code rate and modulation symbol mapping, recovering the user data from the downlink channel section of described appointment.

18. method as claimed in claim 16 is wherein saidly determined at least one the step in modulator approach, code rate and modulation symbol mapping according to the described rate options information through decoding for the described downlink channel section of assigning and is comprised:

Determine the one in a plurality of different coding speed, its each all corresponding to for transmitting the symbol through the QPSK modulation of user data.

19. method as claimed in claim 18, wherein said user data comprises at least one in speech data, view data and text data.

20. method as claimed in claim 2, the downlink channel section of wherein said appointment is the section that has the OFDM key signature of predetermined respective section structure and predetermined number in the OFDM downlink channel;

Wherein the section of whole appointment is for transmitting user data during corresponding to the data rate option of assigned downlink channel section in described appointment indication; And

Transmit user data when wherein the section of the described appointment of a subgroup comprises the non-user data information piece of indicating described data rate option for the described section of assigning at described appointment signal, described subgroup comprises the OFDM key signature fewer than the OFDM key signature of all described predetermined numbers.

21. a wireless terminal, described wireless terminal comprises:

Receiver, it is for the appointment signal that receives the appointment of indicating downlink link channel section and the downlink channel section signal of assigning for reception;

Assign decoder module, it is decoded for the appointment signal to described reception; And

Assign the type determination module, it is for determining that described appointment is the appointment signal of the first kind or Second Type, described first kind indication is corresponding to the data rate option of the downlink channel section of assigning signal to assign, the appointment signal of described Second Type comprises designator, the described section that this designator indicates described appointment signal to assign includes information, the described data rate option of the user data that the described section that this information indication is assigned for described appointment signal comprises.

22. wireless terminal as claimed in claim 21, it further comprises:

Decoding device, it is for comprising designator at definite described appointment signal, and during the information that the described section that this designator is assigned comprises designation data rate options information, use the first coding/decoding method to be decoded to described data rate option information, described the first coding/decoding method is different from the second coding/decoding method that the user data that comprises for the described section to assigned is decoded.

23. wireless terminal as claimed in claim 22 further comprises:

The device of the modulation symbol of the block of information comprised for the downlink channel section that recovers described appointment.

24. wireless terminal as claimed in claim 23, it further comprises:

Determination module, it comprises corresponding to first group of code or the symbol of second group of code for determining the described modulation symbol recovered from described block of information, and each in described first and second group code corresponds respectively to first and second different group data rate options.

25. wireless terminal as claimed in claim 24, the modulation symbol of wherein said first group of code is restricted to two antipodal QPSK modulation values in the QPSK symbol constellation.

26. wireless terminal as claimed in claim 25, the modulation symbol of wherein said second group of code is restricted to two antipodal QPSK modulation values different from described two the QPSK values of symbol that comprise in described first group of code in described QPSK symbol constellation.

27. wireless terminal as claimed in claim 24, wherein each modulation symbol through recovering all comprises a plurality of encoded positions; And

Wherein said decoding device further comprises:

For when determining the described modulation symbol through recovering corresponding to described first group of code, the device of being decoded in described encoded position according to the first form; And

For when determining the described modulation symbol through recovering corresponding to described second group of code, the device of being decoded in described encoded position according to the second form.

28. wireless terminal as claimed in claim 27, wherein said first and second group code is based on the code of Reed-Muller.

29. wireless terminal as claimed in claim 27, the relation between the encoded position of wherein said first and second form indication and at least data rate option information by described encoded position transmission.

30. wireless terminal as claimed in claim 29, wherein said the first form has the information bit of the first total number;

Wherein said the second form has the information bit of the second total number, and described the second total number is greater than described the first total number;

The information bit of wherein said the first total number comprises the position for the 3rd number of transfer rate option information; And

The information bit of wherein said the second total number comprises the position for the 4th number of transfer rate option information.

31. wireless terminal as claimed in claim 30, wherein said the first total number is 5;

Described the second total number is 8;

Described the 3rd number is 1; And

Described the 4th number is 3.

32. wireless terminal as claimed in claim 31, wherein said first and second form is further indicated the relation between encoded position and through-put power designator.

33. wireless terminal as claimed in claim 27, wherein, described decoding device further comprises:

The module that the user data transmitted in to the downlink channel section described assigned at least one of the modulator approach according to by the described data rate option indication through decoding, code rate and modulation symbol mapping is decoded.

34. wireless terminal as claimed in claim 27, the described of wherein said block of information is the symbol through the QPSK modulation through modulation symbol.

35. wireless terminal as claimed in claim 34, the described user data comprised in wherein said assigned downlink channel section modulates to carry out the QAM modulation with QAM16 or higher QAM.

36. wireless terminal as claimed in claim 22, wherein said assigned downlink channel section is the section that has the OFDM key signature of predetermined respective section structure and predetermined number in the OFDM downlink channel;

The section of wherein said whole appointment is for transmitting user data during corresponding to the data rate option of assigned downlink channel section in described appointment indication; And

Transmit user data when wherein the section of the described appointment of a subgroup comprises the non-user data information piece of indicating described data rate option for the described section of assigning at described appointment signal, described subgroup comprises the OFDM key signature fewer than the OFDM key signature of all described predetermined numbers.

Images