CN102164415B - Method, base station and terminal for obtaining extended information - Google Patents
Method, base station and terminal for obtaining extended information Download PDFInfo
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Abstract
The embodiment of the invention discloses a method, a base station and a terminal for obtaining extended information. The method comprises the following steps: the base station is used for filling the signaling content of idle frames of adjacent time slots on a master control channel with the extended information; and the idle frames filled with the extended information are sent to the terminal by the base station, so that the idle frames can be analyzed to obtain the extended information by the terminal. The method, the base station or the terminal provided by the embodiment of the invention can be adopted to solve the technical problem of network transmission source waste in the prior art.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of obtain extend information method, base station and terminal.
Background technology
In application TDMA (time division multiple access, Time Division Multiple Access) mechanics of communication group system in, need one or more logic channels (time slot) on appointment physical channel (carrier frequency) as TSCC (trunked base station control channel, Trunk Station Control Channel), when TSCC is activated time, the channel device carrying this physical channel (carrier frequency) must be in sequential filming state.Send even without informational needs, in order to ensure the continuity of terminal receiver pathfinding signaling, all logic channels (time slot) on this physical channel (carrier frequency) must fill the free time (Idle) frame.
To adopt in DMR (digital mobile intercom, the DigitalMobile Ratio) agreement of two time slot tdma transmission means, the air interface data transmission means at TSCC place physical channel (carrier frequency) as shown in Figure 1.In FIG, RED sector carries two logic channels (time slot), the system set-up information such as sharing system identification code, register information unit and generalized slot counter; The control signal that yl moiety bearing system TSCC sends; Blue portion carries the control signal of business datum or the upper transmission of non-dedicated TSCC that non-TSCC sends.
The principle of TDMA is that time division is become periodic frame (Frame), several time slots are divided into send signal to base station each frame again, under satisfied timing and synchronous condition, base station can receive the signal of each mobile terminal respectively and can not produce mixed disturbing in each time slot.Meanwhile, the signal that base station is sent to multiple mobile terminal is arranged in all in order in predetermined time slot and transmits, as long as each mobile terminal Received signal strength in the time slot of specifying, just in the signal on Neng He road, the signal issuing oneself is carried out distinguishing and receiving.From the principle of above-mentioned TDMA, other data that terminal is equally had the ability in process neighbor logic channel (being namely time slot) while receiving the control signal on TSCC.
Idle (Idle) frame is classified as the one of data signaling by DMR agreement, and the colour coding (CC) in its air interface structure, data type (Data Type=Idle), error correcting code (FEC Parity) need consistent with other data signaling with sync pattern (SYNC) content; That signaling content (Info) is filled is pseudo random number (Pseudo random bits).
From above prior art, the signaling content of idle (Idle) frame is unregarded, that is, once signaling handler detects that the data type (Data Type) of signaling is idle (Idle) frame, its signaling content is exactly irrelevant information, signaling handler no longer continues to process this frame data, and the handling process of this frame also just finishes.Since but this physical channel (carrier frequency) is carrying TSCC, terminal must receive again the information of this TSCC all the time, is also a continuous reception surely for the signaling on the non-dedicated TSCC of same carrier frequency or service logical channels (time slot).And generally non-dedicated TSCC is idle when non-a large amount of service data transmission, this just makes to produce a large amount of bandwidth waste in signalling process, thus waste network transmission resource.
Summary of the invention
The embodiment of the present invention provide a kind of obtain extend information method, base station and terminal, to solve in prior art the technical problem of wasting network transmission resource.
For solving the problems of the technologies described above, embodiments provide a kind of method obtaining extend information, the method comprises:
Extend information is filled in base station in the signaling content of the idle frame of the adjacent time-slots of main control channel;
The idle frame being filled with extend information sends to terminal by base station, can resolve described idle frame obtain described extend information to make terminal.
Preferably, described extend information comprises: the state information of the Time of Day information of base station side, positional information, channel power information, monkey chatter information, terminal preset short message and/or terminal place group.
Preferably, the bearing mode of the signaling content of described idle frame is the polylith topology code BPTC code interleaving mode specified according to digital mobile intercom DMR agreement.
Preferably, described extend information is the Time of Day information of base station side, then described method also comprises:
To make an appointment in base station and terminal both sides the clock filling mode of signaling content of described idle frame;
Then described in described terminal parses, idle frame obtains described extend information, specifically comprises:
The BPTC form that terminal specifies according to DMR agreement carries out deinterleaving decoding;
It is time service data that terminal resolves according to the signaling content of idle frame the information type that is expanded;
Terminal goes out the temporal information of base station side by the format analysis of time service data.
Preferably, described extend information is encryption key, then described method also comprises:
To make an appointment in base station and terminal both sides the encryption key filling mode of signaling content of described idle frame;
Then described in described terminal parses, idle frame obtains described extend information, specifically comprises:
The BPTC form that terminal specifies according to DMR agreement carries out deinterleaving decoding;
It is encryption key that terminal resolves according to the signaling content of idle frame the information type that is expanded;
Terminal goes out the key data of key number, Key Sequence Number and the current sequence number that base station sends by the format analysis of encryption key.
Embodiments provide a kind of base station, this base station comprises:
Packing module, fills extend information in the signaling content for the idle frame of the adjacent time-slots at main control channel;
Sending module, for being sent to terminal by the idle frame being filled with extend information, can resolve described idle frame to make terminal and obtaining described extend information.
Preferably, described extend information comprises: the state information of the Time of Day information of base station side, positional information, channel power information, monkey chatter information, terminal preset short message and/or terminal place group.
Preferably, the bearing mode of the signaling content of described idle frame is the BPTC code interleaving mode specified according to digital mobile intercom DMR agreement.
Embodiments provide a kind of terminal, this terminal comprises:
Receiver module, for receiving the idle frame being filled with extend information that base station sends; Described extend information is the extend information that base station is filled in the signaling content of the idle frame of the adjacent time-slots of main control channel;
Parsing module, obtains described extend information for resolving described idle frame.
Preferably, described parsing module, specifically comprises:
Deinterleaving decoding sub-module, carries out deinterleaving decoding for the BPTC form specified according to DMR agreement;
First resolves type submodule, is time service data for resolving according to the signaling content of idle frame the information type that is expanded;
First resolving information submodule, goes out the temporal information of base station side by the format analysis of time service data for terminal.
Preferably, described parsing module, specifically comprises:
Deinterleaving decoding sub-module, carries out deinterleaving decoding for the BPTC form specified according to DMR agreement;
Second resolves type submodule, is encryption key for resolving according to the signaling content of idle frame the information type that is expanded;
Second resolving information submodule, goes out the key data of key number, Key Sequence Number and the current sequence number that base station sends by the format analysis of encryption key for terminal.
The embodiment of the present invention has the following advantages:
The embodiment of the present invention is come for increasing expanded function based on the base station of DMR standard implementation or system by filling extend information in the signaling content section of idle (Idle) frame carrying, the embodiment of the present invention is not compared with using the standard DMR agreement of free time (Idle) frame transmission information, add channel utilization, and improve bandwidth; Meanwhile, other method using customized signaling type to reach transmitting additional information equally of comparing is compared, and the compatibility of the embodiment of the present invention and standard DMR agreement is better.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram of aerial interface data transmission mode in prior art;
Fig. 2 is the flow chart of the embodiment of the method one of acquisition extend information of the present invention;
Fig. 3 is the flow chart of the embodiment of the method two of acquisition extend information of the present invention;
Fig. 4 is the flow chart of the embodiment of the method three of acquisition extend information of the present invention;
Fig. 5 is the structural representation of base station embodiment of the present invention;
The structural representation of Fig. 6 terminal embodiment of the present invention;
Fig. 7 is the structural representation of parsing module in terminal embodiment of the present invention;
Fig. 8 is another structural representation of parsing module in terminal embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
For enabling above-mentioned purpose, the feature and advantage of the embodiment of the present invention more become apparent, below in conjunction with the drawings and specific embodiments, the embodiment of the present invention is described in further detail.
With reference to figure 2, in the inventive method embodiment one, the method that realizing the embodiment of the present invention one provides can comprise the following steps:
Step 201: extend information is filled in base station in the signaling content of the idle frame of the adjacent time-slots of main control channel.
The embodiment of the present invention adopts the mode utilizing idle (Idle) frame transmitting extended information in the adjacent time-slots of Main control channel, solves the waste problem to network transmission resource in prior art.The extend information that can carry in the embodiment of the present invention includes but not limited to system side's information, such as: the state information of Time of Day information, positional information, channel power information, monkey chatter information, terminal preset short message and/or terminal place group, etc.
In order to the handling process of at utmost compatible DMR agreement, the best bearing mode of the signaling content section of idle (Idle) frame is BPTC (196,96) the code interleaving mode according to DMR protocol definition.Certainly, if not strict to the reliability requirement of this extend information, when the data volume of this information is larger simultaneously, also can consider to use other self-defining coded system in base station side.
The embodiment of the present invention can be applied to and use the wireless interspeaker communication system based on DMR cluster protocol of tdma, and in corresponding base station and terminal.
Step 202: the idle frame being filled with extend information sends to terminal by base station, can resolve described idle frame to make terminal and obtain described extend information.
After base station is filled with extend information in the signaling content of idle frame, again the idle frame after this filling is sent to terminal by eating dishes without rice or wine, terminal is again according to the mode of deinterleaving decoding, obtain corresponding extend information, further can also according to the parameter or setting etc. of the adaptive adjustment of extend information self.
The embodiment of the present invention is come for increasing expanded function based on the base station of DMR standard implementation or system by filling extend information in the signaling content section of idle (Idle) frame carrying, the embodiment of the present invention is not compared with using the standard DMR agreement of free time (Idle) frame transmission information, add channel utilization, and improve bandwidth; Meanwhile, other method using customized signaling type to reach transmitting additional information equally of comparing is compared, and the compatibility of the embodiment of the present invention and standard DMR agreement is better.
When extend information is the Time of Day information of base station side, base station can be terminal time service, in the low cost DMR colony terminal not realizing GPS positioning function, clock synchronous can be realized in base station level, the real-time or cycle correction for terminal of idle (Idle) frame carrying current base station time can be passed through in terminal level.With reference to figure 3, the method that realizing the inventive method embodiment two provides can comprise the following steps:
Step 301: the clock filling mode of the signaling content of described idle frame of making an appointment in base station and terminal both sides.
In the present embodiment, described extend information is the Time of Day information of base station side, now need to be about timing clock filling mode in base station and end side in advance, a kind of bearing mode of the signaling content section to idle (Idle) frame actual in actual applications can shown in reference table 1, and table 1 shows the data array (redundant bit zero padding) of free time (Idle) frame signaling content bearing system time.
Table 1
Each field meanings in Table 1 can shown in reference table 2, and table 2 is Field Definitions of idle (Idle) frame signaling content bearing system time.
Table 2
| Field name | Implication | This example is worth |
| Extension Type | Extend information type | 1: system time |
| Year | Year [0-255] | 40:1970+40=2010 |
| month | The moon [1-12] | 11 |
| Day | Day [1-31] | 18 |
| hour | Time [1-12] | 15 |
| Minute | Divide [1-59] | 56 |
| Second | Second [1-59] | 10 |
| Week | Week [1-7] | 5 |
| CRC | School Affairs | 0x2cb9 |
First need to arrange above clock filling mode respectively in base station and terminal.
Step 302: extend information is filled in base station in the signaling content of the idle frame of the adjacent time-slots of main control channel.
Base station filling time date and time information according to the signaling content of the definition mode in step 301 at idle frame, concrete signaling fills content can reference table 3, and table 3 is that the signaling of idle (Idle) frame signaling content bearing system time fills signal.
Table 3
| Bit | Bit | Bit | Bit | Bit | Bit | Bit | Bit |
| I(95) | 0 | I(71) | 1 | I(47) | 0 | I(23) | 0 |
| I(94) | 0 | I(70) | 0 | I(46) | 0 | I(23) | 0 |
| I(93) | 0 | I(69) | 0 | I(45) | 0 | I(23) | 0 |
| I(92) | 0 | I(68) | 1 | I(44) | 0 | I(23) | 0 |
| I(91) | 0 | I(67) | 0 | I(43) | 0 | I(19) | 0 |
| I(90) | 0 | I(66) | 1 | I(42) | 0 | I(18) | 0 |
| I(89) | 0 | I(65) | 0 | I(41) | 0 | I(17) | 0 |
| I(88) | 1 | I(64) | 1 | I(40) | 0 | I(16) | 0 |
| I(87) | 0 | I(63) | 0 | I(39) | 0 | I(15) | 0 |
| I(86) | 1 | I(62) | 0 | I(38) | 0 | I(14) | 0 |
| I(85) | 0 | I(61) | 1 | I(37) | 0 | I(13) | 1 |
| I(84) | 0 | I(60) | 1 | I(36) | 0 | I(12) | 0 |
| I(83) | 0 | I(59) | 1 | I(35) | 0 | I(11) | 1 |
| I(82) | 0 | I(58) | 0 | I(34) | 0 | I(10) | 1 |
| I(81) | 0 | I(57) | 0 | I(33) | 0 | I(9) | 0 |
| I(80) | 0 | I(56) | 0 | I(32) | 0 | I(8) | 0 |
| I(79) | 1 | I(55) | 0 | I(31) | 0 | I(7) | 1 |
| I(78) | 0 | I(54) | 0 | I(30) | 0 | I(6) | 0 |
| I(77) | 1 | I(53) | 1 | I(29) | 0 | I(5) | 1 |
| I(76) | 1 | I(52) | 1 | I(28) | 0 | I(4) | 1 |
| I(75) | 1 | I(51) | 1 | I(27) | 0 | I(3) | 1 |
| I(74) | 1 | I(50) | 0 | I(26) | 0 | I(2) | 0 |
| I(73) | 1 | I(49) | 0 | I(25) | 0 | I(1) | 0 |
| I(72) | 1 | I(48) | 0 | I(24) | 0 | I(0) | 1 |
Step 303: the idle frame being filled with extend information sends to terminal by base station.
The idle frame being filled with Time of Day information is sent to terminal by base station again, particularly, BPTC (the Block Product Turbo Code that base station specifies with DMR agreement, polylith topology code) (96,196) form is reprinted in signaling content (Info) field of idle (Idle) frame after carrying out code interleaving, and sends to terminal from eating dishes without rice or wine.
Step 304: the BPTC form that terminal specifies according to DMR agreement carries out deinterleaving decoding.
After terminal receives the idle frame of base station transmission, BPTC (96, the 196) form first specified according to DMR agreement carries out deinterleaving decoding.
Step 305: it is time service data that terminal resolves according to the signaling content of idle frame the information type that is expanded.
According to data type (Data Type) field, terminal learns that this frame is idle (Idle) frame, then learn that the data of this signaling bear are time service data according to extend information type (Extension Type) field that signaling content (Info) solves.
Step 306: terminal goes out the temporal information of base station side by the format analysis of time service data.
Terminal goes out temporal information by the format analysis of time service data again, such as date, Hour Minute Second numerical value.
Further, terminal can also be calibrated according to the clock variable of temporal information to self parsed.
In the present embodiment, the object of saving network transmission resource can not only be realized, the clock synchronous to base station and terminal can also be realized, adopt the method for the present embodiment can make time accuracy errors within 30ms.
When extend information is encryption key, base station is under the air interface transmission mode of encryption, at signaling content (Info) the field carrying encryption key of idle (Idle) frame, the decrypting process of all data after terminal receives, can be may be used for.With reference to figure 4, in the inventive method embodiment three, the method that realizing the embodiment of the present invention three provides can comprise the following steps:
Step 401: the encryption key filling mode of the signaling content of described idle frame of making an appointment in base station and terminal both sides.
Extend information is in the present embodiment encryption key, is encrypted as example with DES (Data EncryptionStandard, data encryption standard), and it is a kind of block encryption algorithm developed by IBM Corporation, with 64 for grouping is to data encryption.Simultaneously DES is also a symmetry algorithm: encryption and decryption be same algorithm.Its key length is 56 (because each 8th is used as parity check), and key can be the number of arbitrary 56, and can arbitrarily time change.Des encryption is contrary with the unique order not being both key of deciphering.If the key of each wheel encryption is the key that K1, K2, K3......K16 so decipher respectively is exactly K16, K15, K14......K1.
A kind of bearing mode of the signaling content section to idle (Idle) frame actual in actual applications can shown in reference table 4, table 4 is the filling sample schematic diagram of idle frame, defining 96 bit signaling contents in base station and end side, is namely the data array of idle (Idle) frame signaling content carrying encryption key.
Table 4
Wherein each field meanings can shown in reference table 5, and table 5 shows the Field Definition of free time (Idle) frame signaling content carrying encryption key.
Table 5
| Field name | Implication | This example is worth |
| Extension Type | Extend information type | 2: encryption key |
| Key Index | Key Sequence Number | 0 |
| Key Count | Key number | 7 |
| Key Oct1 | Key the 1st byte | 0b’11010111 |
| Key Oct1 | Key the 2nd byte | 0b’10010110 |
| Key Oct1 | Key the 3rd byte | 0b’11011110 |
| Key Oct1 | Key the 4th byte | 0b’11110101 |
| Key Oct1 | Key the 5th byte | 0b’11010111 |
| Key Oct1 | Key the 6th byte | 0b’10010110 |
| Key Oct1 | Key the 7th byte | 0b’11011110 |
| Key Oct1 | Key the 8th byte | 0b’11110101 |
| CRC | School Affairs | 0xdeb7 |
Step 402: extend information is filled in base station in the signaling content of the idle frame of the adjacent time-slots of main control channel.
Signaling in actual applications fills content can reference table 6, and table 6 be the signal of the signaling filling of idle (Idle) frame signaling content carrying encryption key.
Table 6
| Bit | Bit | Bit | Bit | Bit | Bit | Bit | Bit |
| I(95) | 0 | I(71) | 1 | I(47) | 1 | I(23) | 1 |
| I(94) | 0 | I(70) | 0 | I(46) | 1 | I(23) | 1 |
| I(93) | 0 | I(69) | 0 | I(45) | 0 | I(23) | 1 |
| I(92) | 0 | I(68) | 1 | I(44) | 1 | I(23) | 1 |
| I(91) | 0 | I(67) | 0 | I(43) | 0 | I(19) | 0 |
| I(90) | 0 | I(66) | 1 | I(42) | 1 | I(18) | 1 |
| I(89) | 1 | I(65) | 1 | I(41) | 1 | I(17) | 0 |
| I(88) | 0 | I(64) | 0 | I(40) | 1 | I(16) | 1 |
| I(87) | 0 | I(63) | 1 | I(39) | 1 | I(15) | 1 |
| I(86) | 0 | I(62) | 1 | I(38) | 0 | I(14) | 1 |
| I(85) | 0 | I(61) | 0 | I(37) | 0 | I(13) | 0 |
| I(84) | 0 | I(60) | 1 | I(36) | 1 | I(12) | 1 |
| I(83) | 0 | I(59) | 1 | I(35) | 0 | I(11) | 1 |
| I(82) | 0 | I(58) | 1 | I(34) | 1 | I(10) | 1 |
| I(81) | 0 | I(57) | 1 | I(33) | 1 | I(9) | 1 |
| I(80) | 0 | I(56) | 0 | I(32) | 0 | I(8) | 0 |
| I(79) | 1 | I(55) | 1 | I(31) | 1 | I(7) | 1 |
| I(78) | 1 | I(54) | 1 | I(30) | 1 | I(6) | 0 |
| I(77) | 0 | I(53) | 1 | I(29) | 0 | I(5) | 1 |
| I(76) | 1 | I(52) | 1 | I(28) | 1 | I(4) | 1 |
| I(75) | 0 | I(51) | 0 | I(27) | 1 | I(3) | 0 |
| I(74) | 1 | I(50) | 1 | I(26) | 1 | I(2) | 1 |
| I(73) | 1 | I(49) | 0 | I(25) | 1 | I(1) | 1 |
| I(72) | 1 | I(48) | 1 | I(24) | 0 | I(0) | 1 |
Need in base station and end side to arrange above encryption key filling mode.
Step 403: the idle frame being filled with extend information sends to terminal by base station.
Signaling content (Info) field of reprinting idle (Idle) frame after BPTC (96, the 196) form that then base station specifies with DMR agreement when initialization carries out code interleaving is interior and send from eating dishes without rice or wine.
Step 404: the BPTC form that terminal specifies according to DMR agreement carries out deinterleaving decoding.
Terminal carries out deinterleaving decoding according to BPTC (96, the 196) form that DMR agreement specifies after receiving the idle frame of base station transmission.
Step 405: it is encryption key that terminal resolves according to the signaling content of idle frame the information type that is expanded.
According to data type (Data Type) field, terminal learns that this frame is idle (Idle) frame, then learn that the data of this signaling bear are encryption key data according to extend information type (Extension Type) field that signaling content (Info) solves.
Step 406: terminal goes out the key data of key number, Key Sequence Number and the current sequence number that base station sends by the format analysis of encryption key.
Terminal according to the key data of the format analysis key number of encryption key data, Key Sequence Number and current sequence number, can preserve by Key Sequence Number again.After business is set up, the decrypt data process that terminal can issue base station by Key Sequence Number order, thus restore frame data.
It should be noted that, for aforesaid each embodiment of the method, in order to simple description, therefore it is all expressed as a series of combination of actions, but those skilled in the art should know, the present invention is not by the restriction of described sequence of movement, because according to the present invention, some step can adopt other orders or carry out simultaneously.Secondly, those skilled in the art also should know, the embodiment described in specification all belongs to preferred embodiment, and involved action and module might not be that the present invention is necessary.
Corresponding with the method that the invention described above embodiment provides, see Fig. 5, the embodiment of the present invention additionally provides a kind of structural representation of base station embodiment, and described base station specifically can comprise:
Packing module 501, fills extend information in the signaling content for the idle frame of the adjacent time-slots at main control channel.
The embodiment of the present invention adopts the mode utilizing idle (Idle) frame transmitting extended information in the adjacent time-slots of Main control channel, solves the waste problem to network transmission resource in prior art.The extend information that can carry in the embodiment of the present invention includes but not limited to system side's information, such as: the state information of Time of Day information, positional information, channel power information, monkey chatter information, terminal preset short message and/or terminal place group, etc.
In order to the handling process of at utmost compatible DMR agreement, the best bearing mode of the signaling content section of idle (Idle) frame is BPTC (196,96) the code interleaving mode according to DMR protocol definition.Certainly, if not strict to the reliability requirement of this extend information, when the data volume of this information is larger simultaneously, also can consider to use other self-defining coded system in base station side.
Sending module 502, for being sent to terminal by the idle frame being filled with extend information, can resolve described idle frame to make terminal and obtaining described extend information.
The base station of the embodiment of the present invention is come for the increase expanded function based on DMR standard implementation by filling extend information in the signaling content section of idle (Idle) frame carrying, the embodiment of the present invention is not compared with using the standard DMR agreement of free time (Idle) frame transmission information, add channel utilization, and improve bandwidth; Meanwhile, other method using customized signaling type to reach transmitting additional information equally of comparing is compared, and the compatibility of the embodiment of the present invention and standard DMR agreement is better.
Shown in figure 6, show the structural representation of terminal embodiment of the present invention, as shown in Figure 7, this terminal specifically can comprise:
Receiver module 601, for receiving the idle frame being filled with extend information that base station sends; Described extend information is the extend information that base station is filled in the signaling content of the idle frame of the adjacent time-slots of main control channel;
Parsing module 602, obtains described extend information for resolving described idle frame.
In a particular application, shown in figure 7, described parsing module 602 specifically can comprise:
Deinterleaving decoding sub-module 701, carries out deinterleaving decoding for the BPTC form specified according to DMR agreement;
First resolves type submodule 702, is time service data for resolving according to the signaling content of idle frame the information type that is expanded;
First resolving information submodule 703, goes out the temporal information of base station side by the format analysis of time service data for terminal.
Shown in figure 8, described parsing module 602 specifically also can comprise:
Deinterleaving decoding sub-module 801, carries out deinterleaving decoding for the BPTC form specified according to DMR agreement;
Second resolves type submodule 802, is encryption key for resolving according to the signaling content of idle frame the information type that is expanded;
Second resolving information submodule 803, goes out the key data of key number, Key Sequence Number and the current sequence number that base station sends by the format analysis of encryption key for terminal.
It should be noted that, each embodiment in this specification all adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar part mutually see.For base station and terminal class embodiment, due to itself and embodiment of the method basic simlarity, so description is fairly simple, relevant part illustrates see the part of embodiment of the method.
Also it should be noted that, in this article, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or operating space, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, in this article, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.
Above a kind of method, base station and terminal obtaining extend information that the embodiment of the present invention provides is described in detail, apply specific case herein to set forth principle of the present invention and execution mode, the explanation of above embodiment is just for helping method and the thought thereof of understanding the embodiment of the present invention; Meanwhile, for one of ordinary skill in the art, according to the thought of the embodiment of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (11)
1. obtain a method for extend information, it is characterized in that, be applied to group system, the method comprises:
Extend information is filled in base station in the signaling content of the idle frame of the adjacent time-slots of main control channel; Described main control channel is the trunked base station control channel TSCC of described group system;
The idle frame being filled with extend information sends to terminal by base station, can resolve described idle frame obtain described extend information to make terminal.
2. method according to claim 1, is characterized in that, described extend information comprises: the state information of the Time of Day information of base station side, positional information, channel power information, monkey chatter information, terminal preset short message and/or terminal place group.
3. method according to claim 2, is characterized in that, the bearing mode of the signaling content of described idle frame is the polylith topology code BPTC code interleaving mode specified according to digital mobile intercom DMR agreement.
4. method according to claim 2, is characterized in that, described extend information is the Time of Day information of base station side, then described method also comprises:
To make an appointment in base station and terminal both sides the clock filling mode of signaling content of described idle frame;
Then described in described terminal parses, idle frame obtains described extend information, specifically comprises:
The BPTC form that terminal specifies according to DMR agreement carries out deinterleaving decoding;
It is time service data that terminal resolves according to the signaling content of idle frame the information type that is expanded;
Terminal goes out the temporal information of base station side by the format analysis of time service data.
5. method according to claim 1, is characterized in that, described extend information is encryption key, then described method also comprises:
To make an appointment in base station and terminal both sides the encryption key filling mode of signaling content of described idle frame;
Then described in described terminal parses, idle frame obtains described extend information, specifically comprises:
The BPTC form that terminal specifies according to DMR agreement carries out deinterleaving decoding;
It is encryption key that terminal resolves according to the signaling content of idle frame the information type that is expanded;
Terminal goes out the key data of key number, Key Sequence Number and the current sequence number that base station sends by the format analysis of encryption key.
6. a base station, is characterized in that, is applied to group system, comprising:
Packing module, fills extend information in the signaling content for the idle frame of the adjacent time-slots at main control channel; Described main control channel is the trunked base station control channel TSCC of described group system;
Sending module, for being sent to terminal by the idle frame being filled with extend information, obtains described extend information to make idle frame described in terminal parses.
7. base station according to claim 6, is characterized in that, described extend information comprises: the state information of the Time of Day information of base station side, positional information, channel power information, monkey chatter information, terminal preset short message and/or terminal place group.
8. base station according to claim 6, is characterized in that, the bearing mode of the signaling content of described idle frame is the BPTC code interleaving mode specified according to digital mobile intercom DMR agreement.
9. a terminal, is characterized in that, is applied to group system, comprising:
Receiver module, for receiving the idle frame being filled with extend information that base station sends; Described extend information is the extend information that base station is filled in the signaling content of the idle frame of the adjacent time-slots of main control channel; Described main control channel is the trunked base station control channel TSCC of described group system;
Parsing module, obtains described extend information for resolving described idle frame.
10. terminal according to claim 9, is characterized in that, described parsing module, specifically comprises:
Deinterleaving decoding sub-module, carries out deinterleaving decoding for the BPTC form specified according to DMR agreement;
First resolves type submodule, is time service data for resolving according to the signaling content of idle frame the information type that is expanded;
First resolving information submodule, goes out the temporal information of base station side by the format analysis of time service data for terminal.
11. terminals according to claim 9, is characterized in that, described parsing module, specifically comprises:
Deinterleaving decoding sub-module, carries out deinterleaving decoding for the BPTC form specified according to DMR agreement;
Second resolves type submodule, is encryption key for resolving according to the signaling content of idle frame the information type that is expanded;
Second resolving information submodule, goes out the key data of key number, Key Sequence Number and the current sequence number that base station sends by the format analysis of encryption key for terminal.
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| CN102413463B (en) * | 2011-10-12 | 2013-09-25 | 厦门大学 | Wireless media access layer authentication and key agreement method for filling variable sequence length |
| CN103458529A (en) * | 2012-05-29 | 2013-12-18 | 夏普株式会社 | Method and equipment for accessing wireless communication system |
| CN103401583B (en) * | 2013-06-25 | 2015-12-09 | 北京溢美四方软件技术有限公司 | A kind of clock recovery based on the identification of pseudo random sequence feature and calibration implementation method |
| CN111294147B (en) * | 2019-04-25 | 2023-01-31 | 北京紫光展锐通信技术有限公司 | Encoding method and device of DMR system, storage medium and digital interphone |
| CN110519696A (en) * | 2019-08-07 | 2019-11-29 | 徐江 | A kind of method of indoor positioning, mobile terminal, system and computer storage medium |
| CN110890941B (en) * | 2019-12-09 | 2021-12-14 | 深圳森虎科技股份有限公司 | Method for realizing reverse message through CSBK signaling |
| CN117544949B (en) * | 2024-01-10 | 2024-03-22 | 中国电力科学研究院有限公司 | Data encryption method, data decryption method, electronic device, and storage medium |
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