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WO2018157865A1 - Procédé d'acquisition d'informations de planification, terminal et puce de bande de base - Google Patents

Procédé d'acquisition d'informations de planification, terminal et puce de bande de base Download PDF

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Publication number
WO2018157865A1
WO2018157865A1 PCT/CN2018/077925 CN2018077925W WO2018157865A1 WO 2018157865 A1 WO2018157865 A1 WO 2018157865A1 CN 2018077925 W CN2018077925 W CN 2018077925W WO 2018157865 A1 WO2018157865 A1 WO 2018157865A1
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WO
WIPO (PCT)
Prior art keywords
aggregation level
scheduling information
physical resource
terminal
resource allocation
Prior art date
Application number
PCT/CN2018/077925
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English (en)
Chinese (zh)
Inventor
孙立新
丁颖哲
周明宇
陈华敏
Original Assignee
北京佰才邦技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 北京佰才邦技术有限公司 filed Critical 北京佰才邦技术有限公司
Publication of WO2018157865A1 publication Critical patent/WO2018157865A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/26—Cell enhancers or enhancement, e.g. for tunnels, building shadow
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/53—Allocation or scheduling criteria for wireless resources based on regulatory allocation policies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/535—Allocation or scheduling criteria for wireless resources based on resource usage policies

Definitions

  • the present application relates to the field of communications technologies, and in particular, to a scheduling information acquiring method, a terminal, and a baseband chip.
  • the MulteFire technology is a radio access technology that extends LTE (Long Term Evolution) to an unlicensed band.
  • LTE Long Term Evolution
  • an unlicensed band carrier can provide services independently without using a licensed band carrier.
  • a Wi-Fi-like carrier sensing technology is introduced at the MF (MulteFire) physical layer.
  • LBT Listen Before Talk
  • the base station or terminal monitors that the unlicensed band channel is occupied, that is, when the LBT fails, no signal is sent.
  • the unlicensed band channel is idle, the LBT succeeds.
  • the signal is sent.
  • the channel is always available on the licensed frequency band.
  • the MCOT Maximum Channel Occupancy Time
  • the MCOT Maximum Channel Occupancy Time
  • the channel is not always available for the unlicensed band device.
  • the maximum channel occupation time of the current Multefire device cannot exceed 10 ms. Therefore, when performing coverage enhancement, it is necessary to consider the limitation of continuous transmission time, and it is not possible to occupy the channel for transmission for a long time.
  • the terminal cannot know the specific data transmission parameters before decoding the scheduling information, so that the data transmission and reception time becomes longer, and the data transmission is easily interrupted, and the transmission cannot be completed once in the maximum channel occupation time.
  • the embodiment of the present application provides a scheduling information acquiring method, a terminal, and a baseband chip, which are intended to solve the technical problem that the data transmission in the control channel is easily interrupted in the related art, and can introduce a large aggregation level to implement control.
  • the coverage of the channel is enhanced, thereby increasing the success rate of data transmission.
  • the embodiment of the present application provides a method for acquiring scheduling information, including: determining, according to a high layer signaling issued by a base station, a physical resource allocation size and a resource location of a control channel; and according to the physical resource allocation size and the resource The location, according to the preset primary aggregation level and the preset advanced aggregation level, performs blind detection of scheduling information in multiple candidate locations in the search space corresponding to the terminal.
  • the preset primary aggregation level is ⁇ 2, 4, 8, 16 ⁇
  • the preset advanced aggregation level includes ⁇ 24, 32, 40, 48, 56.
  • the step of performing blind detection of the scheduling information by the multiple candidate locations includes: according to the physical resource allocation size and the enhanced coverage required by the terminal, at the preset primary aggregation level and the preset advanced level Selecting a target aggregation level in the aggregation level; performing blind detection of scheduling information by using the target aggregation level, where the target aggregation level is one or more.
  • the method further includes: synthesizing at least two existing physical resource allocation sizes according to the high layer signaling issued by the base station, to obtain a new physical resource allocation size, for The step of performing blind detection of scheduling information by performing a plurality of candidate locations in a search space corresponding to the terminal by the new physical resource allocation size and the resource location.
  • the embodiment of the present application provides a terminal, including: a physical resource determining unit, determining a physical resource allocation size and a resource location of a control channel according to a high layer signaling issued by a base station; and a blind information detecting unit according to the The physical resource allocation size and the resource location perform blind detection of scheduling information in multiple candidate locations in the search space corresponding to the terminal according to a preset primary aggregation level and a preset advanced aggregation level.
  • the preset primary aggregation level is ⁇ 2, 4, 8, 16 ⁇
  • the preset advanced aggregation level includes ⁇ 24, 32, 40, 48, 56.
  • the scheduling information blind detecting unit is specifically configured to: according to the physical resource allocation size and the enhanced coverage required by the terminal, at the preset primary aggregation level. Selecting a target aggregation level from the preset advanced aggregation levels, and performing blind detection of scheduling information by using the target aggregation level, where the target aggregation level is one or more.
  • the physical resource aggregation unit further aggregates the existing at least two physical resource allocation sizes according to the high layer signaling issued by the base station to obtain a new physical resource allocation. And a step of performing blind detection of scheduling information by using the plurality of candidate locations in the search space corresponding to the terminal according to the new physical resource allocation size and the resource location.
  • an embodiment of the present application provides a terminal, including: a processor, and a memory, where the memory stores an instruction that can be executed by the processor, and the processor is configured to invoke the memory to store the And instructing, according to the high layer signaling issued by the base station, determining a physical resource allocation size and a resource location of the control channel; according to the physical resource allocation size and the resource location, according to a preset primary aggregation level and a preset The advanced aggregation level performs blind detection of scheduling information in a plurality of candidate locations in the search space corresponding to the terminal.
  • an embodiment of the present application provides a baseband chip for a terminal, including: a processor; and a memory, where the memory stores instructions executable by the processor, and the processor is configured to invoke the The instruction stored in the memory performs the following operations: determining, according to the high layer signaling issued by the base station, a physical resource allocation size and a resource location of the control channel; according to the physical resource allocation size and the resource location, according to a preset primary aggregation The level and the preset advanced aggregation level perform blind detection of scheduling information in a plurality of candidate locations in the search space corresponding to the terminal.
  • the above technical solution is directed to the technical problem of increasing the success rate of data transmission of the control channel in the unlicensed frequency band in the related art, and adding an advanced aggregation level based on the original preset primary aggregation level, for example, a preset
  • the primary aggregation level can be ⁇ 2, 4, 8, 16 ⁇
  • the default advanced aggregation level includes ⁇ 24, 32, 40, 48, 56 ⁇ .
  • the coverage enhancement can be implemented in a Transmission Time Interval (TTI), which greatly reduces the time taken to acquire the scheduling information of the base station, and greatly increases the success rate of data transmission in the unlicensed frequency band.
  • TTI Transmission Time Interval
  • FIG. 1 is a flowchart showing a method for acquiring scheduling information according to an embodiment of the present application
  • FIGS. 2 to 4 are schematic diagrams showing data repetitive transmission in an embodiment of the present application.
  • Figure 5 shows a block diagram of a terminal of one embodiment of the present application
  • Figure 6 shows a block diagram of a terminal of another embodiment of the present application.
  • Figure 7 shows a block diagram of a baseband chip of one embodiment of the present application.
  • a PDCCH for a normal normal user, a PDCCH (hysical downlink control channel) or an enhanced physical downlink control channel (ePDCCH) is required to acquire scheduling information.
  • the ePDCCH for the CE (Covering Enhanced) user is named as a fePDCCH (furnish enhanced PDCCH), the fePDCCH needs to support coverage enhancement, and the fePDCCH supports user-specific Scheduling of data and broadcast data. Further, the fePDCCH supports scheduling of common broadcast data, wherein the fePDCCH supports a common search space (CSS) and a UE-specific search space (USS).
  • SCS common search space
  • USS UE-specific search space
  • the coverage enhancement is performed using the above fePDCCH.
  • FIG. 1 is a flow chart showing a method of acquiring scheduling information according to an embodiment of the present application.
  • the scheduling information obtaining method includes:
  • Step 102 Determine a physical resource allocation size and a resource location of the control channel according to the high layer signaling issued by the base station.
  • an advanced aggregation level is added.
  • the preset primary aggregation level is ⁇ 2, 4, 8, 16 ⁇
  • the preset advanced aggregation level includes ⁇ 24.
  • the primary aggregation level can be preset to ⁇ 2, 4, 8, 16 ⁇
  • the preset advanced aggregation level is ⁇ 24, 32, 40, 48, 56 ⁇ .
  • Step 104 Perform blind detection of scheduling information in multiple candidate locations in the search space corresponding to the terminal according to the preset primary aggregation level and the preset advanced aggregation level according to the physical resource allocation size and the resource location.
  • the coverage enhancement can be implemented in one transmission time interval, which greatly reduces the duration of time for acquiring the scheduling information of the base station, and greatly increases the success rate of data transmission in the unlicensed frequency band.
  • the primary aggregation level is also preset to be ⁇ 2, 4, 8, 16 ⁇ , and the preset advanced aggregation level is ⁇ 24, 32, 40, 48, 56, 64 ⁇ .
  • the physical resource allocation size of the control channel is 2, 4, 8, or 16 PRBs (physical resource blocks)
  • the number of possible candidate locations in the search space corresponding to the terminal is as shown in Table 1.
  • the number of possible candidate locations in the search space corresponding to the terminal is not limited to the case shown in Table 1, and may also be implemented in Table 2 below.
  • the scheduling information may be blindly detected at each candidate location using all preset aggregation levels to ensure that the scheduling information is effectively detected to avoid missed detection.
  • the number of possible repeated transmissions ⁇ r 1 , r 2 , . . . , r N ⁇ is predefined, where r 1 ⁇ r 2 ⁇ ... ⁇ r N , the base station can be configured within each TTI The maximum number of repeated transmissions r max of the control channel, when the user blindly checks the scheduling information, selects all possible repeated transmission times that are not greater than r max and performs blind detection in the corresponding different search spaces.
  • r max has a base station configuration and may be one of ⁇ r 1 , r 2 , ..., r N ⁇ .
  • the number of possible repeated transmissions ⁇ r 1 , r 2 , . . . , r N ⁇ is defined in advance, where r 1 ⁇ r 2 ⁇ ... ⁇ r N , the base station can configure each The maximum number of repeated transmissions r max of the control channel in the TTI.
  • the base station can configure each The maximum number of repeated transmissions r max of the control channel in the TTI.
  • r max has a base station configuration and may be one of ⁇ r 1 , r 2 , ..., r N ⁇ .
  • ⁇ r 1 , r 2 , . . . , r N ⁇ is ⁇ 1 , 2 , 4, 8 ⁇ , ie N is 4.
  • the fePDCCH can be repeatedly transmitted N times in the frequency domain.
  • the search space remains unchanged, that is, for the same terminal, in the same transmission process, there is the same search space, and the possible dynamics of decoding the same candidate location by combining multiple repeated transmissions Scheduling information.
  • the search space of the terminal has three candidate positions 201, 202, and 203. In one transmission of each TTI, the three candidate positions 201, 202, and 203 are always detected.
  • the maximum repetitive transmission number of the terminal 1 can be set to 8 times, and the number of repeated transmissions per round is 2 times. If the terminal 1 completes the data reception at the second repeated transmission, the repetitive transmission can be terminated. If the terminal 1 does not successfully receive data during the second repeated transmission, the next round of 2 repeated transmissions may be turned on. If the data is not successfully received at the 8th repeated transmission, the transmission fails and the process is terminated.
  • the target aggregation level may be selected in the preset primary aggregation level and the preset advanced aggregation level according to the physical resource allocation size and the enhanced coverage required by the terminal; and the target aggregation level is used.
  • Perform blind detection of scheduling information and the target aggregation level is one or more. That is to say, in the blind detection of the scheduling information, according to the physical resource allocation size and the enhanced coverage required by the terminal, only the partial aggregation level is used for blind detection of the scheduling information, thereby improving the efficiency of the blind detection of the scheduling information.
  • the fePDCCH is only in one time-frequency resource allocated in one TTI, and the aggregation level of the eCCE (enhanced control channel element) is 301. 302, 303 three candidate locations are transmitted to achieve coverage enhancement.
  • the at least two physical resource allocation sizes may be aggregated according to the high layer signaling advertised by the base station, to obtain a new physical resource allocation size, according to the new The physical resource allocation size and the resource location perform a step of performing blind detection of scheduling information at a plurality of candidate locations in the search space corresponding to the terminal.
  • the new physical resource allocation size is obtained by the existing physical resource allocation size aggregation, which can reduce the additional signaling overhead and enhance the flexibility of physical resource configuration.
  • the resource size of the fePDCCH is ⁇ 2, 4, 8, 2+4, 8+4, 8+8 ⁇ PRBs, that is, the new resource size is not introduced, but the original resource size is adopted.
  • the aggregation is performed to support a larger aggregation level, and the number of possible candidate locations in the search space corresponding to the terminal is as shown in Table 3 below.
  • Table 3 below.
  • the user needs to blindly solve multiple search spaces. The greater the number of repetitions, the fewer aggregation levels are supported and the smaller the aggregation level. The smaller the number of repetitions, the larger the aggregation level is supported. Based on the search space design, a number of repeated transmissions corresponds to multiple search spaces.
  • the terminal not only needs to perform blind detection on the new resource size, but also needs to perform blind detection separately in two smaller resources.
  • two fePDCCH sets can be configured, that is, corresponding to two independent resources and a search space, and the user needs to blindly check scheduling information in two search spaces.
  • the terminal 500 includes: a physical resource determining unit 502, configured to determine a physical resource allocation size and a resource location of the control channel according to the high layer signaling issued by the base station; and a scheduling information blind detecting unit 504, configured to use the physical resource according to the physical resource
  • the allocation size and the resource location are performed, and the blind information of the scheduling information is performed in multiple candidate locations in the search space corresponding to the terminal according to the preset primary aggregation level and the preset advanced aggregation level.
  • the preset primary aggregation level is ⁇ 2, 4, 8, 16 ⁇
  • the preset advanced aggregation level includes one or more of ⁇ 24, 32, 40, 48, 56, 64 ⁇ .
  • the scheduling information blind detecting unit 504 is specifically configured to select a target aggregation level in a preset primary aggregation level and a preset advanced aggregation level according to the physical resource allocation size and the enhanced coverage required by the terminal, and use The target aggregation level performs blind detection of scheduling information, where the target aggregation level is one or more.
  • the physical resource aggregation unit 506 is configured to aggregate the existing at least two physical resource allocation sizes according to the high layer signaling issued by the base station, to obtain a new physical resource allocation size, according to the new The physical resource allocation size and the resource location perform a step of performing blind detection of scheduling information at a plurality of candidate locations in the search space corresponding to the terminal.
  • FIG. 6 shows a block diagram of a terminal of another embodiment of the present application.
  • a terminal 600 of another embodiment of the present application includes: a processor 602; and a memory 604.
  • the memory 604 stores instructions executable by the processor 602, and the processor 602 is configured to call the memory 604.
  • the stored instruction performs the following operations: determining, according to the high layer signaling issued by the base station, the physical resource allocation size and the resource location of the control channel; according to the physical resource allocation size and the resource location, according to the preset primary aggregation level and the preset advanced aggregation. Level, blind detection of scheduling information in multiple candidate locations within the search space corresponding to the terminal.
  • Figure 7 shows a block diagram of a baseband chip of one embodiment of the present application.
  • the baseband chip 700 provided by the embodiment of the present application is used for a terminal, including: a processor 702; and a memory 704, where the memory 704 stores instructions executable by the processor 702, and the processor 702 is used by the processor 702.
  • Invoking the instruction stored in the memory 704, performing the following operations: determining a physical resource allocation size and a resource location of the control channel according to the high layer signaling issued by the base station; according to the physical resource allocation size and the resource location, according to the preset primary aggregation level and the preset
  • the advanced aggregation level performs blind detection of scheduling information in a plurality of candidate locations in the search space corresponding to the terminal.
  • the coverage enhancement can be implemented in one transmission time interval. , the success rate of data transmission in the unlicensed frequency band is greatly increased.
  • the word “if” as used herein may be interpreted as “when” or “when” or “in response to determining” or “in response to detecting.”
  • the phrase “if determined” or “if detected (conditions or events stated)” may be interpreted as “when determined” or “in response to determination” or “when detected (stated condition or event) “Time” or “in response to a test (condition or event stated)”.
  • terminals involved in the embodiments of the present application may include, but are not limited to, a personal computer (PC), a personal digital assistant (PDA), a wireless handheld device, a tablet computer, and a tablet computer.
  • PC personal computer
  • PDA personal digital assistant
  • Mobile phones MP3 players, MP4 players, etc.
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • multiple units or components may be combined. Or it can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.
  • the above-described integrated unit implemented in the form of a software functional unit can be stored in a computer readable storage medium.
  • the software functional unit is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to perform the methods of the various embodiments of the present application. Part of the steps.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. .

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé d'acquisition d'informations de planification, un terminal et une puce de bande de base. Le procédé d'acquisition d'informations de planification comprend les étapes suivantes : selon la taille de ressource physique attribuée d'un canal de commande, un niveau d'agrégation primaire prédéfini et un niveau d'agrégation avancé prédéfini, déterminer une pluralité de positions candidates dans un espace de recherche correspondant à un terminal; et réaliser une détection en aveugle d'informations de planification sur la pluralité de positions candidates. Au moyen de la solution technique de la présente invention, sur la base du niveau d'agrégation primaire prédéfini original, après augmentation du niveau d'agrégation avancé, l'amélioration de la couverture peut être réalisée dans un intervalle de temps de transmission de telle sorte que le taux de réussite de transmission de données dans une bande de fréquences non autorisée est fortement augmenté.
PCT/CN2018/077925 2017-03-03 2018-03-02 Procédé d'acquisition d'informations de planification, terminal et puce de bande de base WO2018157865A1 (fr)

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CN109428677B (zh) * 2017-09-01 2021-07-20 中兴通讯股份有限公司 一种数据传输方法和基站

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