WO2012155524A1 - Procédé pour signaler la position d'une ressource pour la transmission d'un signal de commande, et terminal associé - Google Patents

Procédé pour signaler la position d'une ressource pour la transmission d'un signal de commande, et terminal associé Download PDF

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Publication number
WO2012155524A1
WO2012155524A1 PCT/CN2011/085128 CN2011085128W WO2012155524A1 WO 2012155524 A1 WO2012155524 A1 WO 2012155524A1 CN 2011085128 W CN2011085128 W CN 2011085128W WO 2012155524 A1 WO2012155524 A1 WO 2012155524A1
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WO
WIPO (PCT)
Prior art keywords
control signaling
transmission resource
subframe
location
signaling transmission
Prior art date
Application number
PCT/CN2011/085128
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English (en)
Chinese (zh)
Inventor
陈艺戬
戴博
郭森宝
左志松
Original Assignee
中兴通讯股份有限公司
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 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2012155524A1 publication Critical patent/WO2012155524A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • 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

Definitions

  • the present invention relates to the field of communications, and in particular, to a notification method and a terminal for controlling a location of a signaling transmission resource. Background technique
  • the downlink physical layer control signaling includes downlink grant related downlink grant (DL Grant) information that the terminal needs to learn and the UE needs to know.
  • DL Grant downlink grant related downlink grant
  • UL Grant uplink transmission related uplink grant
  • PDCCH Physical Downlink Control CHannel
  • the physical layer control channel for transmitting physical layer control signaling is generally configured in the first N orthogonal frequency division multiplexing (Orthogonal Frequency). Division Multiplexing (OFDM for short) is transmitted on the symbol. Generally, these N symbols are called control signaling transmission areas.
  • OFDM Orthogonal Frequency Division Multiplexing
  • the available transmission resources of the existing control signaling transmission area are divided into multiple CCE resource units, and the control information occupation resources are allocated in units of CCE.
  • the resource unit CCE can be further subdivided into multiple REGs, one CCE. It consists of a plurality of discontinuous REGs, generally 9 REGs constitute one CCE, and further each REG is composed of multiple basic resource units.
  • control signaling transmission resources allocated by the user are not continuous, which brings many difficulties to the implementation of the closed-loop precoding technology in the multi-antenna system, so that the control signaling region can only use the diversity technology and it is difficult to use the closed-loop precoding technology. .
  • the main reason is that the demodulation pilot design and channel state information feedback of the first precoding region are very difficult to design. Therefore, the control signaling in the existing version only supports the discontinuous resource transmission and diversity techniques.
  • control signaling transmission resources of the same UE may be continuous time-frequency resources.
  • the control signaling area of the new and old versions is shown in Figure 1.
  • the control signaling transmission area can support the closed-loop precoding technology when controlling signaling transmission, and improve the control signaling capacity to support more user control signaling.
  • the dedicated demodulation pilot in R10 can be reused.
  • DMRS demodulate control signaling
  • the UE is configured with a RRC layer (a type of higher layer signaling) signaling to configure the UE with a control signaling location, as shown in FIG.
  • RRC layer a type of higher layer signaling
  • the base station uses the RRC layer signaling to configure the UE with the possible transmission resource location of the control signaling, and in each subframe before the signaling update, if there is control signaling to be transmitted, the physical layer is transmitted in some or all of the transmission locations.
  • the control signaling is used by the terminal to detect the corresponding resource location in each subframe before the signaling update according to the received configuration signaling, which may be an RB (Resouce Block), and then perform blind detection on the possible transmission resource location.
  • the correct control signaling transmission position is detected, and the control information is demodulated.
  • a disadvantage of this method is that the high-level signaling configuration is not flexible enough. After a configuration, the UE is restricted to the configured possible transmission resource location for signaling transmission over a long period of time. That is to say, the UE's control signaling can only be transmitted on fewer resource locations, such as 4 RBs, which will lose scheduling flexibility and lose scheduling gain.
  • the terminal can detect the specific control signaling transmission location in a complicated manner, and it consumes time and consumes power, which is very disadvantageous to the terminal.
  • Another method is to use multi-level control signaling as shown in FIG.
  • the first level control signaling is carried in the original control area and contains the location information of the second level control signaling:
  • This method is very flexible, and the base station can get very sufficient scheduling gain because it can be selected Any transmission resource is transmitted to the UE. Because the fading in the frequency domain is different, the base station may consider transmitting higher-quality transmission resources to each UE as much as possible for each UE to transmit control signaling. However, this method is a large one. The defect is the control signaling overhead of Level-1. Compared with the overhead of DL Grant or UL Grant that needs to be transmitted, the cost is relatively close. Therefore, the efficiency of transmission is much lower.
  • the technical problem to be solved by the present invention is to provide a notification method for controlling the location of a signaling transmission resource and a terminal to improve the configuration efficiency of the location of the control signaling resource.
  • the present invention provides a notification method for controlling a location of a signaling transmission resource, including: a base station notifying a parameter indicating a location of an initial control signaling transmission resource candidate to a terminal;
  • the predetermined rule is to calculate, according to the initial control signaling transmission resource candidate location and the time domain subframe position or the subframe group location, the control signaling transmission resource candidate location of the terminal in each subframe.
  • the above method may also have the following features:
  • the terminal performs blind detection on the determined control signaling transmission resource candidate position of each subframe, and detects a control signaling transmission resource location where the base station actually sends control signaling to the terminal.
  • the above method may also have the following features:
  • the predetermined rule includes: The two location sets corresponding to the control signaling transmission resource candidate locations of the adjacent subframe or the subframe group are completely different.
  • the above method may also have the following features:
  • the predetermined rule includes: dividing, by the terminal, the control signaling transmission resource candidate location into M zones in the frequency domain, and the control signaling transmission resource candidate locations of each subframe or subframe group include M candidate locations, and each sub-location
  • the M candidate positions in the frame or the subframe group respectively correspond to the M regions, and the two candidate positions in which the two candidate positions of the adjacent subframe or the subframe group belong to the same region are separated by Y blocks in the order of increasing or decreasing the resource blocks.
  • the resource block, M, Y are positive integers.
  • the above method may also have the following features:
  • the predetermined rule includes: a control signaling transmission resource candidate location of each subframe in the same subframe group the same.
  • the parameter of the initial control signaling transmission resource candidate location is a control signaling transmission resource candidate location of the designated subframe.
  • the present invention further provides a terminal, where the terminal includes a receiving module and a control signaling transmission resource location calculation module; the receiving module is configured to: receive an initial control signaling transmission sent by the receiving base station a parameter of the resource candidate location; the control signaling transmission resource location calculation module is configured to: according to the predetermined rule agreed with the base station, transmit a resource candidate location and a time domain subframe position or a subframe group according to the initial control signaling The location calculates a control signaling transmission resource candidate location of the terminal on each subframe.
  • the foregoing terminal may also have the following features:
  • the terminal further includes a detection module.
  • the detection module is configured to: perform blind detection on a control signaling transmission resource candidate position of each subframe, and detect a control signaling transmission resource that the base station actually sends control signaling to the terminal. position.
  • the foregoing terminal may also have the following features:
  • the predetermined rule includes: The two location sets corresponding to the control signaling transmission resource candidate locations of the adjacent subframe or the subframe group are completely different.
  • the foregoing terminal may also have the following features:
  • the predetermined rule includes: dividing, by the terminal, the control signaling transmission resource candidate location into the frequency domain, the control signaling transmission resource candidate location of each subframe or the subframe group includes the candidate locations, and each of the sub-frames
  • the candidate positions in the frame or the subframe group respectively correspond to the one area, and the two candidate positions in which the two candidate positions of the adjacent subframe or the subframe group belong to the same area are separated by the order of increasing or decreasing the resource blocks.
  • Resource blocks, ⁇ , ⁇ are positive integers.
  • the foregoing terminal may also have the following features:
  • the predetermined rule includes: the control signaling transmission resource candidate locations of the subframes in the same subframe group are the same.
  • the parameter of the initial control signaling transmission resource candidate location is a control signaling transmission resource candidate location of the designated subframe.
  • the scheme can improve the configuration efficiency of the control signaling resource location and obtain more scheduling gains. And no increase in overhead.
  • FIG. 1 is a schematic diagram of a location of a control signaling area in the prior art
  • FIG. 2 is a schematic diagram of a configuration control signaling location in the prior art 1;
  • FIG. 3 is a schematic diagram of a location of a control signaling in the prior art 2;
  • FIG. 4 is a schematic diagram of a notification method for controlling a location of a signaling transmission resource in an embodiment
  • FIG. 5 is a schematic diagram of a method for notifying a location of a control signaling transmission resource in a first embodiment
  • FIG. 6 is a schematic diagram of a method for notifying a location of a control signaling transmission resource in a second embodiment.
  • the method for notifying the location of the control signaling transmission resource includes: the base station notifying the terminal of the parameter indicating the initial control signaling transmission resource candidate location; the terminal according to the predetermined rule agreed with the base station, according to the The initial control signaling transmission resource candidate location and the time domain subframe location or the subframe group location calculate a control signaling transmission resource candidate location of the terminal on each subframe.
  • the terminal performs blind detection on the determined control signaling transmission resource candidate position of each subframe, and detects a control signaling transmission resource location where the base station actually sends control signaling to the terminal.
  • the base station notifies the terminal of the parameter indicating the initial control signaling transmission resource candidate location by using the RRC signaling.
  • the predetermined rule includes: The two location sets corresponding to the control signaling transmission resource candidate locations of the adjacent subframe or the subframe group are completely different.
  • the predetermined rule further includes: dividing, by the terminal, the control signaling transmission resource candidate location into M zones in the frequency domain, where the control signaling transmission resource candidate locations of each subframe or subframe group include M candidate locations, each The M candidate positions in the subframe or the subframe group respectively belong to the M regions, and the two candidate positions in which the two candidate positions of the adjacent subframe or the subframe group belong to the same region are separated by the order in which the resource blocks are incremented or decremented.
  • Resource blocks, M, Y are positive integers.
  • the predetermined rule further includes: the control signaling transmission resource candidate locations of the subframes in the same subframe group are the same. Keeping the transmission positions of N subframes the same is mainly beneficial to feedback of channel state information. The feedback of the channel information of the control signaling transmission resource candidate position can be used for N subframes.
  • the terminal corresponding to the foregoing method includes a receiving module and a control signaling transmission resource location calculation module, where the receiving module is configured to receive a parameter that is sent by the base station and that indicates an initial control signaling transmission resource candidate location; the control signaling transmission resource a location calculation module, configured to calculate, according to the predetermined rule agreed by the base station, the control of the terminal in each subframe according to the initial control signaling transmission resource candidate location and the time domain subframe position or the subframe group location Signaling transmission resource candidate location.
  • the terminal further includes a detection module, and the detection module is configured to perform blind detection on a control signaling transmission resource candidate position of each subframe, and detect a control signaling transmission resource that the base station actually sends control signaling to the terminal. position.
  • the base station configures, by the RRC layer signaling, a set of initial control signaling transmission resource candidate positions, for example, RBs 5, 7, 13, 19 for the terminal UE1.
  • the base station transmits the resource candidate location and the subframe number through the initial control signaling according to a function rule F, calculates the resource location of the possible control signaling transmission of each subframe, and the available control signaling on each subframe.
  • the transmitted resource location sends control signaling.
  • the available transport resource locations for the first subframe are:
  • RB 5, 7, 13, 19 is the resource location of the initial possible control signaling transmission of the base station configuration.
  • the available transmission resource location calculated by the second subframe according to function F is:
  • the available transmission resource location calculated by the third subframe according to function F is:
  • the location of the available transmission resources calculated by the fourth subframe according to function F is:
  • the time domain rule embodied by the function F includes a loop group of five RBs, and when the number of each TTI is increased by one in the loop group, the RB number is incremented by one to perform a loop.
  • the terminal calculates the possible control signaling transmission resource position in each subframe according to the received configuration parameter and according to the function F and the subframe number, and is blind on the RBs 5, 7, 13, 19 on the first subframe. Detection of control signaling information.
  • the second subframe it is RB 1,8,14,20
  • the third subframe is RB 2,9,15,16
  • the fourth subframe is RB 3,10,11,17.
  • the terminal blindly detects the actual control signaling transmission resource location on each subframe. Taking the first subframe as an example, the base station may send control signaling on RB 5, 7. The terminal may need to detect, RB5 transmits control signaling, RB7 transmits control signaling, RB13 transmits control signaling, and RB19 transmits control signaling.
  • RB5 and 7 joint transmission control signaling RB5 and 13 joint transmission control signaling, RB5 and 19 joint transmission control signaling, RB7 and 13 joint transmission control signaling, RB 7 and 19 joint transmission control signaling, RB13 and R9 joint transmission control signaling, RB5 and 7 and 13 joint transmission control signaling, RB7 and 13 and 19 joint transmission control signaling, RB5 and 13 and 19 joint transmission control signaling, RB5 and 7 and 19 joint transmission control signaling RB5 and 7 and 13 and 19 jointly transmit control signaling and other conditions, and finally detect the correct transmission resource location and check out the control information.
  • the base station configures a set of initial control signaling transmission resource candidate positions for the terminal UE2 through RRC layer signaling, for example, 5 RBs such as RB 1 , 5 , 9, 13 , and 17 .
  • the base station transmits the resource candidate location and the subframe group number through the initial control signaling according to the function rule F, calculates the resource location of the possible control signaling transmission of each subframe, and uses the available control signaling on each subframe.
  • the transmitted resource location sends control signaling.
  • the available transmission resource locations of the first subframe group, that is, the first N subframes are the same, as follows:
  • RB1, 5, 9, 13, 17 is the resource location of the initial possible control signaling transmission of the base station configuration.
  • the available transmission resource locations of the second subframe group, that is, the subsequent N subframes are the same, and the available transmission resource locations calculated according to the function F are: RB2, 6, 10, 14, 18.
  • the available transmission resource locations of the third subframe group, that is, the subsequent N subframes are the same, and the available transmission resource locations calculated according to the function F are: RB3, 7, 11, 15, 19.
  • the available transmission resource positions of the fourth subframe group that is, the subsequent N subframes are the same, and the available transmission resource positions calculated according to the function F are: RB4, 8, 12, 16, 20.
  • the available transmission resource positions of the fifth subframe group that is, the subsequent N subframes are the same, and the available transmission resource positions calculated according to the function F are: RB1, 5, 9, 13, 17.
  • the time domain rule embodied by the function F is that the basic rule is a cyclic group of 4 RBs. In the cyclic group, when the TTI number is cumulatively increased by N, the RB number is incremented by 1 to cycle.

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

Abstract

La présente invention se rapporte à un procédé adapté pour signaler la position d'une ressource pour la transmission d'un signal de commande. L'invention se rapporte d'autre part à un terminal associé. Le procédé selon l'invention comprend les étapes suivantes : une station de base transmet au terminal les coefficients requis pour indiquer la position candidate d'une ressource initiale pour la transmission d'un signal de commande; selon la règle prédéterminée négociée avec la station de base, le terminal calcule la position candidate de la ressource pour la transmission d'un signal de commande du terminal sur chaque sous-trame, sur la base de la position candidate de la ressource initiale pour la transmission d'un signal de commande et sur la base de la position de la sous-trame dans le domaine temporel ou de la position du groupe de sous-trames. La solution technique de la présente invention est apte à améliorer l'efficacité de configuration de la position de la ressource d'un signal de commande. De cette manière, le gain de programmation obtenu peut être plus élevé sans que le surdébit augmente pour autant.
PCT/CN2011/085128 2011-09-21 2011-12-31 Procédé pour signaler la position d'une ressource pour la transmission d'un signal de commande, et terminal associé WO2012155524A1 (fr)

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CN201110282047.8 2011-09-21
CN201110282047.8A CN102316522B (zh) 2011-09-21 2011-09-21 一种控制信令传输资源位置的通知方法及一种终端

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CN106454901A (zh) * 2016-11-04 2017-02-22 维沃移动通信有限公司 下行控制信道的检测方法、指示方法、终端及网络侧设备
CN108282323B (zh) * 2017-01-06 2021-06-15 华为技术有限公司 接收节点、发送节点和通信方法
CN108282872B (zh) * 2017-01-06 2023-06-06 中兴通讯股份有限公司 下行控制资源位置指示方法、确定方法及相关设备
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CN102316522A (zh) 2012-01-11

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