WO2017045531A1 - 信道状态信息的接收方法、反馈方法、装置、基站及终端 - Google Patents

信道状态信息的接收方法、反馈方法、装置、基站及终端 Download PDF

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Publication number
WO2017045531A1
WO2017045531A1 PCT/CN2016/097653 CN2016097653W WO2017045531A1 WO 2017045531 A1 WO2017045531 A1 WO 2017045531A1 CN 2016097653 W CN2016097653 W CN 2016097653W WO 2017045531 A1 WO2017045531 A1 WO 2017045531A1
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Prior art keywords
base station
group identifier
group
state information
channel state
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PCT/CN2016/097653
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English (en)
French (fr)
Inventor
塔玛拉卡拉盖施
高秋彬
陈文洪
陈润华
李辉
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电信科学技术研究院
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Application filed by 电信科学技术研究院 filed Critical 电信科学技术研究院
Priority to EP16845645.7A priority Critical patent/EP3352513B1/en
Priority to US15/760,582 priority patent/US10735071B2/en
Publication of WO2017045531A1 publication Critical patent/WO2017045531A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0037—Inter-user or inter-terminal allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0057—Physical resource allocation for CQI
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • 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 disclosure relates to the field of communications technologies, and in particular, to a channel state information receiving method, a feedback method, a device, a base station, and a terminal.
  • the base station antenna array is generally horizontally arranged as shown in FIGS. 1 and 2.
  • the base station transmitter beam can only be adjusted in the horizontal direction, while the vertical direction is a fixed downtilt angle. Therefore, various beamforming/precoding techniques are performed based on the horizontal channel information.
  • the wireless signal is three-dimensionally propagated in space, the method of fixing the downtilt angle does not optimize the performance of the system.
  • the transmitting signal of the base station can not only shape the terminal (UE) in the horizontal direction, but also shape the UE in the vertical direction, and the antenna array is used to make the beam in the vertical direction. Dynamic adjustments are possible.
  • one implementation manner is: the UE needs to feed back channel state information (CSI) in the vertical direction;
  • the implementation manner is to configure multiple CSI feedback configurations for the UE, and different CSI feedback configurations adopt different vertical beamforming vectors, and the UE performs CSI feedback based on the optimal CSI feedback configuration and informs the base station of corresponding location information (ie, informs Which vertical beamforming vector is the base station, so that the base station can use the optimal vertical shaping vector for vertical shaping.
  • the base station determines N non-zero power channel state information reference signal (NZP CSI-RS) resources, the number of ports of each CSI-RS resource is the same as the number of antenna unit groups, and each port of each CSI-RS resource corresponds to A group of antenna units, such as the first port corresponding to the first column of vertical antennas, the second port corresponding to the second column of vertical antennas, and so on.
  • NZP CSI-RS non-zero power channel state information reference signal
  • the base station determines a beamforming weight vector for each CSI-RS resource, and the beamforming weight vector can be determined by the vertical angle to be covered by the CSI-RS resource.
  • the pilot signal is weighted by the beamforming vector and sent from a group of antenna units corresponding to the port. Taking FIG. 5 as an example, there are 16 antenna elements in total, and 4 antenna elements in the vertical direction are divided into one group, and each group has 4 antenna elements, and there are 4 groups in total. Each set of antennas is used to transmit pilot signals for one port of the CSI-RS resource.
  • the pilot signal s n (i) of the i-th port is weighted by the beamforming weighting vector [w n (0) w n (1) w n (2) w n (3)] T from the ith antenna, That is, the i-th column antenna is emitted.
  • the UE may perform measurement based on the three sets of CSI-RS resources, and report the CSI measured on the CSI-RS resource with the best channel quality, and the location information of the CSI-RS resource in all configured CSI-RS resources;
  • the base station can obtain the current optimal vertical shaping weight vector according to the position information, thereby performing vertical shaping of the data.
  • the UE may report the location information and CSI corresponding to the optimal multiple CSI feedback configurations, so that the base station side selects one or more different vertical beams for downlink data transmission.
  • the UE may also need to report the number of CSI feedback configurations corresponding to the currently reported CSI and location information (ie, the total number of CSIs fed back), or recommend the number of CSI feedback configurations used by the base station side.
  • the UE's CSI feedback may employ periodic Physical Uplink Control Channel (PUCCH) feedback, or aperiodic Physical Uplink Shared Channel (PUSCH) feedback.
  • PUCCH Physical Uplink Control Channel
  • PUSCH Physical Uplink Shared Channel
  • the base station configures a periodic PUCCH resource, and the UE periodically reports the corresponding CSI on the configured resource.
  • the base station triggers the UE to perform CSI feedback by using downlink control information (DCI), where the UE is The CSI feedback is performed on the PUSCH in the uplink subframe corresponding to the trigger subframe.
  • DCI downlink control information
  • the base station may trigger the UE to report the CSI corresponding to each CSI process in a certain CSI process set.
  • the CSI process set is pre-configured to the UE through the high layer signaling, and the triggering process is implemented by using the DCI.
  • the UE can also feed back different vertical assignments.
  • the CSI corresponding to multiple CSI-RSs after shape vector shaping.
  • the base station when the base station performs CSI feedback, the base station needs to send different control signaling for different terminals, and each terminal receives CSI feedback after receiving the control signaling sent to it, but such
  • the method increases the overhead of downlink signaling of the base station.
  • the technical problem to be solved by the present disclosure is to provide a method, a feedback method, a device, a base station and a terminal for receiving channel state information.
  • an embodiment of the present disclosure provides a method for receiving channel state information, including:
  • the group identifier is allocated in the following manner:
  • group identifier M Mod N1
  • a group identifier is assigned to the accessed terminal, where M is the total number of terminals accessed by the base station at the access time of the terminal, and N1 is the base station.
  • the total number of packets allocated to multiple terminals of the base station, Mod is the remainder operation; or
  • group identifier terminal identifier Mod N1
  • a group identifier is assigned to the accessed terminal, where N1 is the total number of packets configured by the base station for multiple terminals accessing the base station, and Mod is a remainder operation.
  • the step of sending the trigger signaling to a group of terminals having the same group identifier includes:
  • the trigger signaling is downlink control information DCI or static control signaling or semi-static control signaling.
  • the step of sending the trigger signaling carrying the group identifier to all the terminals in the group corresponding to the group identifier includes:
  • the scrambled trigger signaling is sent to all terminals in the group corresponding to the group identifier.
  • the triggering signaling further includes: a size of the preset resource block, location information of the preset resource block in the resource set configured by the base station, and trigger status information that triggers the terminal to perform channel state information feedback.
  • the step of receiving the channel state information respectively fed back by the group of terminals having the same group identifier according to the trigger signaling on the preset resource block includes:
  • the preset multiplexing rule includes: time division multiplexing, frequency division multiplexing, code division multiplexing, or time-frequency code multiplexing.
  • the method further includes:
  • An embodiment of the present disclosure provides a device for receiving channel state information, including:
  • a first acquiring module configured to obtain a group identifier of a group that is accessed by multiple terminals of the access base station after being grouped
  • a sending module configured to send trigger signaling to a group of terminals having the same group identifier
  • the first receiving module is configured to receive, on the preset resource block, channel state information that is respectively fed back by the group of terminals having the same group identifier according to the trigger signaling.
  • the group identifier is allocated in the following manner:
  • group identifier M Mod N1
  • a group identifier is assigned to the accessed terminal, where M is the total number of terminals accessed by the base station at the access time of the terminal, and N1 is the base station.
  • the total number of packets allocated to multiple terminals of the base station, Mod is the remainder operation; or
  • group identifier terminal identifier Mod N1
  • a group identifier is assigned to the accessed terminal, where N1 is the total number of packets configured by the base station for multiple terminals accessing the base station, and Mod is a remainder operation.
  • the sending module is specifically configured to:
  • the sending module includes:
  • the scrambling unit is configured to perform scrambling processing on the trigger signaling carrying the group identifier by using a preset scrambling code to obtain the scrambled trigger signaling, where the preset scrambling code is obtained according to the group identifier. Scrambling code
  • a sending unit configured to send the scrambled trigger signaling to all terminals in the group corresponding to the group identifier.
  • An embodiment of the present disclosure provides a base station, including:
  • a processor and a memory coupled to the processor via a bus interface, the memory for storing programs and data used by the processor when performing operations, when the processor calls and executes the memory stored in the memory
  • the program and data are implemented, the following functional modules are implemented:
  • a first acquiring module configured to obtain a group identifier of a group that is accessed by multiple terminals of the access base station after being grouped
  • a sending module configured to send trigger signaling to a group of terminals having the same group identifier
  • the first receiving module is configured to receive, on the preset resource block, channel state information that is respectively fed back by the group of terminals having the same group identifier according to the trigger signaling.
  • An embodiment of the present disclosure provides a method for feeding back channel state information, including:
  • the channel state information of the terminal is fed back to the base station on the preset resource block corresponding to the group identifier, where the preset resource block is allocated by the base station to all terminals in the group corresponding to the group identifier.
  • Preset resource blocks Preset resource blocks.
  • the step of obtaining the group identifier of the group in which the terminal is located includes:
  • group identifier M Mod N1, where M is the total number of terminals accessed by the base station at the access time of the terminal, and N1 is the base station accessing The total number of packets configured by multiple terminals of the base station, and Mod is a remainder operation; or
  • group identifier terminal identifier Mod N1
  • N1 is the total number of packets configured by the base station for multiple terminals accessing the base station
  • Mod is a remainder operation.
  • the step of feeding back the channel state information of the terminal to the base station on the preset resource block corresponding to the group identifier according to the trigger signaling includes:
  • the channel state information of the terminal is fed back to the base station by using a preset multiplexing rule on the preset resource block corresponding to the group identifier;
  • the preset multiplexing rule includes: time division multiplexing, frequency division multiplexing, code division multiplexing, or time-frequency code multiplexing.
  • An embodiment of the present disclosure provides a feedback device for channel state information, including:
  • a second obtaining module configured to obtain a group identifier of a group where the terminal is located
  • a second receiving module configured to receive trigger signaling sent by the base station
  • a feedback module configured to feed back, according to the trigger signaling, the channel state information of the terminal to the base station, where the preset resource block is the group corresponding to the group identifier A preset resource block allocated by all terminals.
  • An embodiment of the present disclosure further provides a terminal, including:
  • a processor and a memory coupled to the processor via a bus interface, the memory for storing programs and data used by the processor when performing operations, when the processor calls and executes the memory stored in the memory
  • the program and data are implemented, the following functional modules are implemented:
  • a second obtaining module configured to obtain a group identifier of a group where the terminal is located
  • a second receiving module configured to receive trigger signaling sent by the base station
  • a feedback module configured to feed back, according to the trigger signaling, the channel state information of the terminal to the base station, where the preset resource block is the group corresponding to the group identifier A preset resource block allocated by all terminals.
  • each terminal of the access base station is grouped in advance; the base station sends the trigger signaling, which can trigger a group of terminals to perform channel state information feedback, and the channel state information reported by multiple terminals in the same group can be reused.
  • the trigger signaling which can trigger a group of terminals to perform channel state information feedback, and the channel state information reported by multiple terminals in the same group can be reused.
  • the same resource block in this way, the overhead of downlink signaling of the base station is saved, and the feedback efficiency of the channel state information is improved.
  • FIG. 1 is a schematic diagram of a horizontally arranged dual-polarized antenna array in the related art
  • FIG. 2 is a schematic diagram of a horizontally arranged linear array antenna array in the related art
  • FIG. 3 is a schematic diagram of a dual-polarized antenna array arranged horizontally and vertically in a related art
  • FIG. 4 is a schematic diagram of a linear array antenna array arranged horizontally and vertically in a related art
  • FIG. 5 is a schematic diagram showing a transmission state of a CSI-RS on an antenna unit
  • FIG. 6 is a flow chart showing a receiving method of at least some embodiments of the present disclosure.
  • FIG. 7 is a flow chart showing a receiving method of at least some embodiments of the present disclosure.
  • FIG. 8 is a flow chart showing a receiving method of at least some embodiments of the present disclosure.
  • FIG. 9 is a flow chart showing a receiving method of at least some embodiments of the present disclosure.
  • FIG. 10 is a schematic diagram showing the format of an uplink resource in time division multiplexing feedback
  • FIG. 11 is a flow chart showing a receiving method of at least some embodiments of the present disclosure.
  • FIG. 12 is a block diagram showing a receiving apparatus of an embodiment of the present disclosure.
  • Figure 13 is a diagram showing a base station of an embodiment of the present disclosure.
  • 15 is a flow chart showing a feedback method of at least some embodiments of the present disclosure.
  • 16 is a block diagram showing a feedback device of an embodiment of the present disclosure.
  • Figure 17 is a diagram showing a terminal of an embodiment of the present disclosure.
  • the present disclosure is directed to the problem that a base station in the related art sends a downlink signaling, which can only trigger a terminal to perform channel state information reporting, and provides a channel state information receiving method, a feedback method, a device, a base station, and a terminal, thereby saving the downlink of the base station.
  • Signaling overhead improves the feedback efficiency of channel state information.
  • a method for receiving channel state information includes:
  • Step 61 Obtain a group identifier of a group in which multiple terminals of the access base station are grouped after being grouped;
  • each terminal is assigned a group identifier when accessing the base station.
  • the base station side triggers channel state information feedback, it first needs to select which group or groups of terminals to trigger feedback on channel state information. .
  • Step 62 Send trigger signaling to a group of terminals having the same group identifier
  • the trigger signaling sent here may be one or multiple, as long as one trigger signaling sent by the base station side only triggers a group of terminals to perform channel state information feedback.
  • Step 63 Receive, on the preset resource block, channel state information that is respectively fed back by the group of terminals having the same group identifier according to the trigger signaling.
  • the preset resource block is configured by the base station to receive the channel state information fed back by the terminal, and the preset resource block only receives the channel state information reported by the terminals in the same group, and is located in different groups. The channel state information reported by the terminal needs to be fed back to different resource blocks.
  • the method of receiving the channel state information is applied to the base station side.
  • the trigger signaling may be downlink control information (DCI) or static control signaling or semi-static control signaling (eg, radio resource control RRC signaling), but the triggering signaling is mainly used in the present disclosure.
  • DCI downlink control information
  • static control signaling e.g, radio resource control RRC signaling
  • semi-static control signaling e.g, radio resource control RRC signaling
  • the receiving method further includes:
  • Step 60 Assign a group identifier to each accessed terminal.
  • the base station calculates, according to the total number of terminals accessed by the base station and the total number of packets of the terminal, which group the newly accessed terminal belongs to, for example, the total number of base stations.
  • the total number of packets of the configured terminal is 100.
  • the 100 groups are numbered starting from 0.
  • the total number of terminals accessed at that time is 230, so it is obtained by 230 Mod 100.
  • the remainder is 30, so it can be known that the new terminal accessed belongs to the group numbered 30.
  • step 601 mainly emphasizes that each time a terminal accesses, the base station assigns a group identifier to the terminal.
  • the step 60 may include a step 602, where a group identifier is randomly assigned to at least one of the multiple terminals that access the base station.
  • the implementation of the step 602 is relatively simple.
  • the base station can assign the group to the terminal according to the agreed rules. For example, the terminal can be grouped according to the rotation rule, that is, the terminal to be accessed is sequentially Group group with the lowest group number The group with the larger number is assigned to the group with the largest group number, and then the group with the smallest group number is newly allocated and cyclically grouped.
  • the group identifier allocation mode of the step 602 can be used to allocate the group identifier to the terminal at the time when the terminal accesses, and can also uniformly allocate the group identifier for the accessed multiple terminals at the agreed time. As long as the group ID is assigned to the accessed terminal before the group ID is used.
  • step 603 performs grouping of the terminal according to the terminal identifier of the terminal itself, and the terminal identifier may be a serial number unique to the terminal.
  • the group identity allocation mode of step 603 can be used to allocate the group identity to the terminal at the time when the terminal accesses, or the group identity can be uniformly allocated for multiple terminals that are accessed at the appointed time. As long as the group ID is assigned to the accessed terminal before the group ID is used.
  • step 601 and step 602 the group identity is allocated by the terminal on the base station side. Therefore, when the step 60 is implemented in the manner of step 601 or step 602, the method further includes: The step of sending to the corresponding terminal; because the terminal identifier is used in step 603, the accessed terminal can learn its own terminal identifier, so as long as the base station side and the terminal side both use the same rule, the terminal obtained by the two can be ensured.
  • the group identifiers are consistent, so when the step 60 is implemented in the manner of step 603, the group identifier of the terminal is not required to be notified by the base station side.
  • the packet is sent to each terminal of the access base station in advance; the base station sends the trigger signaling to the group of terminals, triggers the terminal in the same group to perform feedback of the channel state information, and reports the multiple terminals in the same group.
  • the channel state information can be multiplexed on the same resource block; in this way, the downlink signaling overhead of the base station is saved, and the feedback efficiency of the channel state information is improved.
  • a method for receiving channel state information includes:
  • Step 71 Obtain a group identifier of a group in which multiple terminals of the access base station are grouped after being grouped;
  • Step 72 Send trigger signaling carrying the group identifier to all terminals in the group corresponding to the group identifier.
  • the triggering signaling carries the group identifier, which can make the sending of the trigger signaling have a strong purpose, that is, only the terminal located in the group corresponding to the group identifier can perform the foregoing. Trigger signaling reception and parsing.
  • Step 73 Receive, on the preset resource block, channel state information that is respectively fed back by the group of terminals having the same group identifier according to the trigger signaling.
  • the trigger signaling sent by the base station includes a group identifier, and when the trigger signaling is sent, it is determined that the trigger signaling triggers all the terminals in the group corresponding to the group identifier to be fed back.
  • the channel state information so that the base station side sends a trigger signaling, can trigger multiple terminals to perform channel state information feedback, and reduce downlink signaling transmission.
  • the trigger signaling may further include a size of a preset resource block, location information of the preset resource block in a resource set configured by the base station, and trigger status information that triggers the terminal to perform channel state information feedback.
  • the terminal performs feedback of channel state information according to the above information in the received trigger signaling.
  • a method for receiving channel state information includes:
  • Step 81 Obtain a group identifier of a group in which multiple terminals of the access base station are grouped after being grouped;
  • Step 82 Perform a scrambling process on the trigger signaling carrying the group identifier by using a preset scrambling code to obtain the scrambled triggering signaling, where the preset scrambling code is a scrambling code obtained according to the group identifier.
  • the base station side pre-arranges the manner in which the group identifier is transformed to obtain the preset scrambling code, and notifies the terminal that the terminal can trigger the scrambling according to the agreed mode when receiving the triggered trigger signaling. Let the decoding be done.
  • Step 83 Send the scrambled trigger signaling to all terminals in the group corresponding to the group identifier.
  • Step 84 Receive, on the preset resource block, channel state information that is respectively fed back by the group of terminals having the same group identifier according to the trigger signaling.
  • the security of the trigger signaling transmission is ensured, and at the same time, only the terminal belonging to the group identifier marking group can parse the Trigger signaling to avoid false triggering of the trigger signaling to the terminal.
  • a method for receiving channel state information includes:
  • Step 91 Obtain a group identifier of a group in which multiple terminals of the access base station are grouped after being grouped;
  • Step 92 Send trigger signaling to a group of terminals having the same group identifier
  • Step 93 Receive, on the preset resource block, a group of terminals having the same group identifier according to the touch Signaling and channel state information reported by the preset multiplexing rule.
  • the preset multiplexing rule includes, but is not limited to, time division multiplexing, frequency division multiplexing, code division multiplexing, or time-frequency code multiplexing.
  • a subframe used by one PUSCH has two time slots (TS0, TS1), one terminal reports on TS0, and another terminal reports on TS1, so that two terminals can be multiplexed in one subframe; or TS0 and TS1 are reported in different symbols according to the number of symbols and different terminals.
  • Frequency division multiplexing can be understood as: there are 12 subcarriers in a physical resource block (PRB), one terminal occupies one carrier reporting, such a physical resource block can multiplex 12 terminals; or one terminal occupies a group of subcarriers. .
  • PRB physical resource block
  • Code division multiplexing can be understood as follows: each terminal has its own corresponding code sequence, and the information to be reported is extended (or masked) by the code sequence and then mapped to all or part of the resource blocks.
  • the channel state information reported by each terminal in a group of terminals is multiplexed into one resource block by using a multiplexing rule, so that the base station can obtain channel state information of multiple terminals after parsing one resource block, which is reduced.
  • the resource overhead of the base station is reduced.
  • a method for receiving channel state information includes:
  • Step 111 Obtain a group identifier of a group in which multiple terminals of the access base station are grouped after being grouped;
  • Step 112 Send trigger signaling to a group of terminals having the same group identifier
  • Step 113 Receive, on a preset resource block, channel state information that is respectively fed back by a group of terminals having the same group identifier according to the trigger signaling.
  • Step 114 Demodulate channel state information multiplexed onto the same preset resource block.
  • step 114 extracting, according to the agreed multiplexing rule, the channel state information respectively reported by each terminal of the group of terminals on the preset resource block; and then performing the subsequent channel state information according to the parsed channel state information.
  • Information processing is: extracting, according to the agreed multiplexing rule, the channel state information respectively reported by each terminal of the group of terminals on the preset resource block; and then performing the subsequent channel state information according to the parsed channel state information.
  • the base station allocates a group identifier to each terminal that is accessed (the base station side randomly allocates or allocates according to a predetermined rule), the group identifier indicates the group to which the terminal belongs, and then the base station passes the group identifier through the RRC. Is sent to the corresponding terminal;
  • the base station When the base station needs to trigger the terminal to perform the BI report, the base station selects the group identifier of the group of terminals that need to be reported, and then the base station sends the DCI carrying the group identifier to the terminal after the scrambling process is performed (note that the The DCI may further include a size of the resource block that receives the reported BI and a location of the resource block in the resource set configured by the base station, and the DCI may further include the number of BIs that need to be fed back by the terminal, that is, feedback an optimal BI or more BI);
  • the terminal in the group corresponding to the group identifier in the DCI After receiving the DCI, the terminal in the group corresponding to the group identifier in the DCI performs BI reporting according to the information in the DCI, and the terminals in the same group report their BIs to the same specified resource block respectively;
  • the base station receives multiple BIs multiplexed together by a plurality of terminals in a specified resource block, and performs BI demodulation.
  • a receiving apparatus 120 for channel state information including:
  • the first obtaining module 121 is configured to obtain a group identifier of a group that is accessed by multiple terminals of the access base station after being grouped;
  • the sending module 122 is configured to send trigger signaling to a group of terminals having the same group identifier
  • the first receiving module 123 is configured to receive, on the preset resource block, channel state information that is respectively fed back by the group of terminals having the same group identifier according to the trigger signaling.
  • the group identifier may be allocated in the following manner:
  • group identifier M Mod N1
  • a group identifier is assigned to the accessed terminal, where M is the total number of terminals accessed by the base station at the access time of the terminal, and N1 is the base station.
  • the total number of packets allocated to multiple terminals of the base station, Mod is the remainder operation; or
  • group identifier terminal identifier Mod N1
  • a group identifier is assigned to the accessed terminal, where N1 is the total number of packets configured by the base station for multiple terminals accessing the base station, and Mod is a remainder operation.
  • the sending module 122 is specifically configured to:
  • the trigger signaling is downlink control information DCI or static control signaling or semi-static State control signaling.
  • the triggering signaling further includes: a size of the preset resource block, location information of the preset resource block in the resource set configured by the base station, and trigger state information that triggers the terminal to perform channel state information feedback.
  • the sending module 122 may further include:
  • the scrambling unit is configured to perform scrambling processing on the trigger signaling carrying the group identifier by using a preset scrambling code to obtain the scrambled trigger signaling, where the preset scrambling code is obtained according to the group identifier. Scrambling code
  • a sending unit configured to send the scrambled trigger signaling to all terminals in the group corresponding to the group identifier.
  • the first receiving module 123 is specifically configured to:
  • the preset multiplexing rule includes: time division multiplexing, frequency division multiplexing, code division multiplexing, or time-frequency code multiplexing.
  • the receiving device 120 further includes:
  • a demodulation module configured to demodulate channel state information multiplexed onto the same preset resource block.
  • the embodiment of the receiving device is a receiving device corresponding to the foregoing receiving method embodiment. All the implementation manners of the receiving method embodiment are applicable to the receiving device embodiment, and can also achieve the same. Technical effects.
  • a base station including:
  • a processor 131 a processor 131; and a memory 133 connected to the processor 131 via a bus interface 132, the memory 133 for storing programs and data used by the processor 131 when performing an operation, when the processor 131 calls and When the program and data stored in the memory 133 are executed, the following functional modules are implemented:
  • a first acquiring module configured to obtain a group identifier of a group that is accessed by multiple terminals of the access base station after being grouped
  • a sending module configured to send trigger signaling to a group of terminals having the same group identifier
  • the first receiving module is configured to receive, on the preset resource block, channel state information that is respectively fed back by the group of terminals having the same group identifier according to the trigger signaling.
  • the processor 131 is also used to implement the functions of any other module of the above receiving device.
  • At least some embodiments of the present disclosure provide a method for feeding back channel state information, including:
  • Step 141 Obtain a group identifier of a group in which the terminal is located.
  • Step 142 Receive trigger signaling sent by the base station.
  • Step 143 According to the trigger signaling, the channel state information of the terminal is fed back to the base station on the preset resource block corresponding to the group identifier, where the preset resource block is all the groups in the group corresponding to the group identifier.
  • the preset resource block allocated by the terminal is
  • the feedback method is applied to the terminal side, and the trigger signaling is DCI or static control signaling or semi-static control signaling.
  • the step 141 may include the step 1412 of acquiring a group identifier randomly assigned by the base station to the terminal accessing the base station.
  • the number, Mod is the remainder operation.
  • step 1411 and the step 1412 are to directly receive the group identifier sent by the base station, and the step 1413 is the group identifier calculated by the terminal side according to the rules agreed by the base station side.
  • At least some embodiments of the present disclosure provide a method for feeding back channel state information, including:
  • Step 151 Obtain a group identifier of a group in which the terminal is located.
  • Step 152 Receive trigger signaling that is sent by the base station and carries the group identifier.
  • Step 153 According to the trigger signaling, on the preset resource block corresponding to the group identifier, The station feeds back channel state information of the terminal, where the preset resource block is a preset resource block allocated by the base station to all terminals in the group corresponding to the group identifier.
  • the triggering signaling further includes: a size of the preset resource block, location information of the preset resource block in the resource set configured by the base station, and trigger state information that triggers the terminal to perform channel state information feedback.
  • step 153 is:
  • the channel state information of the terminal is fed back to the base station by using a preset multiplexing rule on the preset resource block corresponding to the group identifier;
  • the preset multiplexing rule includes: time division multiplexing, frequency division multiplexing, code division multiplexing, or time-frequency code multiplexing.
  • the terminal applying the feedback method communicates with the base station, the overhead of the uplink channel resource is reduced, and the feedback efficiency of the terminal to the channel state information is improved.
  • a feedback device 160 for channel state information including:
  • the second obtaining module 161 is configured to obtain a group identifier of a group where the terminal is located;
  • the second receiving module 162 is configured to receive trigger signaling sent by the base station
  • the feedback module 163 is configured to: according to the trigger signaling, feed back channel state information of the terminal to the base station on the preset resource block corresponding to the group identifier, where the preset resource block is a group corresponding to the group identifier by the base station A preset resource block allocated by all terminals in the middle.
  • the second obtaining module 161 is specifically configured to:
  • group identifier M Mod N1, where M is the total number of terminals accessed by the base station at the access time of the terminal, and N1 is the base station accessing The total number of packets configured by multiple terminals of the base station, and Mod is a remainder operation; or
  • group identifier terminal identifier Mod N1
  • N1 is the total number of packets configured by the base station for multiple terminals accessing the base station
  • Mod is a remainder operation.
  • the second receiving module 162 is specifically configured to:
  • the trigger signaling is downlink control information DCI or static control signaling or semi-static control signaling.
  • the triggering signaling further includes: a size of the preset resource block, location information of the preset resource block in the resource set configured by the base station, and trigger state information that triggers the terminal to perform channel state information feedback.
  • the feedback module 163 is specifically configured to:
  • the channel state information of the terminal is fed back to the base station by using a preset multiplexing rule on the preset resource block corresponding to the group identifier;
  • the preset multiplexing rule includes: time division multiplexing, frequency division multiplexing, code division multiplexing, or time-frequency code multiplexing.
  • the embodiment of the feedback device is a feedback device corresponding to the feedback method embodiment. All the implementation manners of the feedback method embodiment are applicable to the embodiment of the feedback device, and can also achieve the same. Technical effects.
  • a terminal including:
  • the memory 173 is configured to store programs and data used by the processor 171 when performing operations, when the processor 171 calls and When the program and data stored in the memory 173 are executed, the following functional modules are implemented:
  • a second obtaining module configured to obtain a group identifier of a group where the terminal is located
  • a second receiving module configured to receive trigger signaling sent by the base station
  • a feedback module configured to feed back, according to the trigger signaling, the channel state information of the terminal to the base station, where the preset resource block is the group corresponding to the group identifier A preset resource block allocated by all terminals.
  • the processor 171 is also used to implement the functions of any other module of the feedback device described above.

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Abstract

本公开提供了一种信道状态信息的接收方法、反馈方法、装置、基站及终端，涉及通信领域。本公开的接收方法包括：获得接入基站的多个终端在被分组后所在组的组标识；发送触发信令给具有相同组标识的一组终端；在预设资源块上，接收具有相同组标识的一组终端依据所述触发信令分别反馈的信道状态信息。本公开的方案，可以节省基站下行信令的开销，提高了信道状态信息的反馈效率。

Description

信道状态信息的接收方法、反馈方法、装置、基站及终端
相关申请的交叉引用
本申请主张在2015年9月18日在中国提交的中国专利申请号No.201510600159.1的优先权，其全部内容通过引用包含于此。
技术领域
本公开涉及通信技术领域，特别涉及一种信道状态信息的接收方法、反馈方法、装置、基站及终端。
背景技术
在相关技术中的蜂窝***中，基站天线阵列一般呈水平排列，如图1和图2所示。基站发射端波束仅能在水平方向进行调整，而垂直方向是固定的下倾角，因此各种波束赋形/预编码技术等均是基于水平方向信道信息进行的。事实上，由于无线信号在空间中是三维传播的，固定下倾角的方法不能使***的性能达到最优。
垂直方向的波束调整对于降低小区间干扰，提高***性能有着很重要的意义。随着天线技术的发展，业界已出现能够对每个阵子独立控制的有源天线，如图3和图4所示。在这种三维天线阵列下，基站的发送信号不仅可以在水平方向上对终端(UE)进行赋形，还可以在垂直方向上对UE进行赋形，采用这种天线阵列，使得波束在垂直方向的动态调整成为可能。
为了使基站确定垂直方向的赋形向量使垂直方向的波束能够对准UE，从而获得最大的赋形增益，通常一种实现方式是：需要UE反馈垂直方向的信道状态信息(CSI)；另一种实现方式是给UE配置多个CSI反馈配置，不同的CSI反馈配置采用不同的垂直波束赋形向量，而UE基于其中最优的CSI反馈配置进行CSI反馈并告知基站相应的位置信息(即告知基站具体的是哪一种垂直波束赋形向量)，从而令基站可以采用最优的垂直赋形向量进行垂直赋形。
上述获得最大的赋形增益的具体实现为：
首先，基站确定N个非零功率信道状态信息参考信号(NZP CSI-RS)资源，每个CSI-RS资源的端口数目和天线单元组数相同，并且每个CSI-RS资源的每个端口对应一组天线单元，如第一个端口对应第一列垂直天线，第二个端口对应第二列垂直天线，以此类推。
基站为每个CSI-RS资源确定一个波束赋形加权向量，波束赋形加权向量可以由该CSI-RS资源要覆盖的垂直角度确定。对于该CSI-RS资源的每个端口，其导频信号经该波束赋形向量加权后从该端口对应的一组天线单元上发出。以图5为例，共有16个天线单元，垂直方向上的4个天线单元分为一组，每组4个天线单元，共有4组。每一组天线用于发送CSI-RS资源的一个端口的导频信号。第i个端口的导频信号sn(i)用波束赋形加权向量[wn(0) wn(1) wn(2) wn(3)]T加权后从第i组天线，即第i列天线上发出。图中的下标n用于区分CSI-RS资源。因每个CSI-RS资源的波束方向不同，通常采用配置3组不同的波束赋形加权向量[wn(0) wn(1) wn(2) wn(3)]T，n＝0，1，2。UE可以基于这三组CSI-RS资源分别进行测量，上报其中信道质量最好的CSI-RS资源上测量得到的CSI，以及该CSI-RS资源在所有配置的CSI-RS资源中的位置信息；基站可以根据该位置信息得到当前最佳的垂直赋形加权向量，从而进行数据的垂直赋形。
在具体实现时，UE可以上报最优的多个CSI反馈配置对应的位置信息和CSI，从而令基站侧从中选择一个或者多个不同的垂直波束用于下行数据传输。此时，UE可能还需要上报当前上报的CSI和位置信息对应的CSI反馈配置的数目(即反馈的CSI的总个数)，或者推荐基站侧使用的CSI反馈配置的数目。
UE的CSI反馈可以采用周期的物理上行链路控制信道(PUCCH)反馈，或者非周期的物理上行链路共享信道(PUSCH)反馈。在周期CSI反馈中，基站配置周期性的PUCCH资源，UE在配置的资源上周期性上报相应的CSI；在非周期CSI反馈中，基站通过下行控制信息(DCI)触发UE进行CSI反馈，UE在触发子帧对应的上行子帧中的PUSCH上进行CSI反馈。对于非周期CSI反馈，基站可以触发UE上报某个CSI进程集合中的每个CSI进程对应的CSI。其中，CSI进程集合通过高层信令预先配置给UE，而触发过程通过DCI来实现。通过配置多个CSI进程集合，也可以让UE反馈不同的垂直赋 形向量赋形后的多个CSI-RS对应的CSI。
在非周期CSI反馈中，基站在触发终端进行CSI反馈时，需要针对不同的终端发送不同的控制信令，每个终端接收到发送给它的控制信令后进行CSI的反馈，但是，此种方式增大了基站的下行信令的开销。
发明内容
本公开要解决的技术问题是提供一种信道状态信息的接收方法、反馈方法、装置、基站及终端。
为了解决上述技术问题，本公开实施例提供一种信道状态信息的接收方法，包括：
获得接入基站的多个终端在被分组后所在组的组标识；
发送触发信令给具有相同组标识的一组终端；
在预设资源块上，接收具有相同组标识的一组终端依据所述触发信令分别反馈的信道状态信息。
其中，所述组标识采用如下方式进行分配：
根据公式：组标识＝M Mod N1，为接入的终端分配一个组标识，其中，M为在所述终端的接入时刻，基站统计的接入的终端的总个数，N1为基站为接入该基站的多个终端配置的总分组个数，Mod为求余数运算；或者
为接入基站的多个终端中的至少一个随机分配一个组标识；或者
根据公式：组标识＝终端标识Mod N1，为接入的终端分配一个组标识，其中，N1为基站为接入该基站的多个终端配置的总分组个数，Mod为求余数运算。
其中，所述发送触发信令给具有相同组标识的一组终端的步骤包括：
发送携带有所述组标识的触发信令，给与所述组标识对应的组中的所有终端。
其中，所述触发信令为下行控制信息DCI或者静态控制信令或者半静态控制信令。
其中，所述发送携带有所述组标识的触发信令，给与所述组标识对应的组中的所有终端的步骤包括：
对携带有所述组标识的触发信令采用预设扰码进行加扰处理，得到加扰后的触发信令，所述预设扰码为根据所述组标识得到的扰码；
将加扰后的触发信令发送给与所述组标识对应的组中的所有终端。
其中，所述触发信令中还携带有：预设资源块的大小、所述预设资源块在基站配置的资源集合中的位置信息以及触发终端进行信道状态信息反馈的触发状态信息。
其中，所述在预设资源块上，接收具有相同组标识的一组终端依据所述触发信令分别反馈的信道状态信息的步骤包括：
在预设资源块上，接收具有相同组标识的一组终端依据所述触发信令以及预设复用规则上报的信道状态信息；
所述预设复用规则包括：时分复用、频分复用、码分复用或时频码复用。
其中，在所述在预设资源块上，接收具有相同组标识的一组终端依据所述触发信令分别反馈的信道状态信息的步骤之后，还包括：
对复用到同一预设资源块上的信道状态信息进行解调。
本公开实施例提供一种信道状态信息的接收装置，包括：
第一获取模块，用于获得接入基站的多个终端在被分组后所在组的组标识；
发送模块，用于发送触发信令给具有相同组标识的一组终端；
第一接收模块，用于在预设资源块上，接收具有相同组标识的一组终端依据所述触发信令分别反馈的信道状态信息。
其中，所述组标识采用如下方式进行分配：
根据公式：组标识＝M Mod N1，为接入的终端分配一个组标识，其中，M为在所述终端的接入时刻，基站统计的接入的终端的总个数，N1为基站为接入该基站的多个终端配置的总分组个数，Mod为求余数运算；或者
为接入基站的多个终端中的至少一个随机分配一个组标识；或者
根据公式：组标识＝终端标识Mod N1，为接入的终端分配一个组标识，其中，N1为基站为接入该基站的多个终端配置的总分组个数，Mod为求余数运算。
其中，所述发送模块具体用于：
发送携带有所述组标识的触发信令，给与所述组标识对应的组中的所有终端。
其中，所述发送模块包括：
加扰单元，用于对携带有所述组标识的触发信令采用预设扰码进行加扰处理，得到加扰后的触发信令，所述预设扰码为根据所述组标识得到的扰码；
发送单元，用于将加扰后的触发信令发送给与所述组标识对应的组中的所有终端。
本公开实施例提供一种基站，包括：
处理器；以及通过总线接口与所述处理器相连接的存储器，所述存储器用于存储所述处理器在执行操作时所使用的程序和数据，当处理器调用并执行所述存储器中所存储的程序和数据时，实现如下的功能模块：
第一获取模块，用于获得接入基站的多个终端在被分组后所在组的组标识；
发送模块，用于发送触发信令给具有相同组标识的一组终端；
第一接收模块，用于在预设资源块上，接收具有相同组标识的一组终端依据所述触发信令分别反馈的信道状态信息。
本公开实施例提供一种信道状态信息的反馈方法，包括：
获得终端所在组的组标识；
接收基站发送的触发信令；
根据所述触发信令，在该组标识对应的预设资源块上，向基站反馈该终端的信道状态信息，所述预设资源块是基站为该组标识对应的组中的所有终端分配的预设资源块。
其中，所述获得终端所在组的组标识的步骤包括：
获取基站根据公式：组标识＝M Mod N1，为该终端分配的组标识，其中，M为在该终端的接入时刻，基站统计的接入的终端的总个数，N1为基站为接入该基站的多个终端配置的总分组个数，Mod为求余数运算；或者
获取基站为接入基站的该终端随机分配的一个组标识；或者
根据公式：组标识＝终端标识Mod N1，获取该终端的组标识，其中，N1为基站为接入该基站的多个终端配置的总分组个数，Mod为求余数运算。
其中，根据所述触发信令，在该组标识对应的预设资源块上，向基站反馈该终端的信道状态信息的步骤包括：
根据所述触发信令，在该组标识对应的预设资源块上，利用预设复用规则向基站反馈该终端的信道状态信息；其中，
所述预设复用规则包括：时分复用、频分复用、码分复用或时频码复用。
本公开实施例提供一种信道状态信息的反馈装置，包括：
第二获取模块，用于获得终端所在组的组标识；
第二接收模块，用于接收基站发送的触发信令；
反馈模块，用于根据所述触发信令，在该组标识对应的预设资源块上，向基站反馈该终端的信道状态信息，所述预设资源块是基站为该组标识对应的组中的所有终端分配的预设资源块。
本公开的实施例还提供一种终端，包括：
处理器；以及通过总线接口与所述处理器相连接的存储器，所述存储器用于存储所述处理器在执行操作时所使用的程序和数据，当处理器调用并执行所述存储器中所存储的程序和数据时，实现如下的功能模块：
第二获取模块，用于获得终端所在组的组标识；
第二接收模块，用于接收基站发送的触发信令；
反馈模块，用于根据所述触发信令，在该组标识对应的预设资源块上，向基站反馈该终端的信道状态信息，所述预设资源块是基站为该组标识对应的组中的所有终端分配的预设资源块。
本公开的有益效果是：
上述方案，通过预先给接入基站的每一个终端进行分组；基站发送触发信令，可以触发一组终端进行信道状态信息的反馈，且位于同一组的多个终端上报的信道状态信息可以复用在同一资源块上；此种方式，节省了基站下行信令的开销，同时提高了信道状态信息的反馈效率。
附图说明
图1为相关技术中水平排列双极化天线阵列的示意图；
图2为相关技术中水平排列线阵天线阵列的示意图；
图3为相关技术中水平和垂直二维排列的双极化天线阵列的示意图；
图4为相关技术中水平和垂直二维排列的线阵天线阵列的示意图；
图5表示CSI-RS在天线单元上的发送状态示意图；
图6表示本公开至少一些实施例的接收方法的流程示意图；
图7表示本公开至少一些实施例的接收方法的流程示意图；
图8表示本公开至少一些实施例的接收方法的流程示意图；
图9表示本公开至少一些实施例的接收方法的流程示意图；
图10表示在时分复用反馈时，上行资源的格式示意图；
图11表示本公开至少一些实施例的接收方法的流程示意图；
图12表示本公开实施例的接收装置的模块示意图；
图13表示本公开实施例的基站的示意图；
图14表示本公开至少一些实施例的反馈方法的流程示意图；
图15表示本公开至少一些实施例的反馈方法的流程示意图；
图16表示本公开实施例的反馈装置的模块示意图；
图17表示本公开实施例的终端的示意图。
具体实施方式
为使本公开的目的、技术方案和优点更加清楚，下面将结合附图及具体实施例对本公开进行详细描述。
本公开针对相关技术中的基站发送一条下行信令只能触发一个终端进行信道状态信息上报的问题，提供一种信道状态信息的接收方法、反馈方法、装置、基站及终端，从而节省基站的下行信令开销，提高信道状态信息的反馈效率。
如图6所示，本公开至少一些实施例的信道状态信息的接收方法，包括：
步骤61，获得接入基站的多个终端在被分组后所在组的组标识；
需要说明的是，每个终端在接入基站时，均被分配一个组标识，基站侧在触发信道状态信息反馈时，首先需要选择触发哪一组或是哪几组终端进行信道状态信息的反馈。
步骤62，发送触发信令给具有相同组标识的一组终端；
应当说明的是，此处发送的触发信令可以为一条也可以为多条，只要保证基站侧发送的一条触发信令只触发一组终端进行信道状态信息的反馈即可。
步骤63，在预设资源块上，接收具有相同组标识的一组终端依据所述触发信令分别反馈的信道状态信息；
需要说明的是，该预设资源块为基站为终端配置、用于接收终端反馈的信道状态信息；且一个预设资源块上只接收位于同一组的终端上报的信道状态信息，位于不同组的终端上报的信道状态信息需要反馈到不同的资源块上。
应当说明的是，该信道状态信息的接收方法应用于基站侧。
需要说明的是，所述触发信令可以为下行控制信息(DCI)或者静态控制信令或者半静态控制信令(例如：无线资源控制RRC信令)，而本公开中主要以触发信令为DCI为例进行说明。
在触发状态信息上报时，基站侧应获知每个组所包含终端的情况，因此，在进行步骤61之前，所述接收方法，还包括：
步骤60，为每一个接入的终端分配一个组标识。
应当说明的是，可选地，本实施例中，所述步骤60在具体实现时，可以包括步骤601，根据公式：组标识＝M Mod N1，为接入的终端分配一个组标识，其中，M为在所述终端的接入时刻，基站统计的接入的终端的总个数，N1为基站为接入该基站的多个终端配置的总分组个数，Mod为求余数运算。
该步骤601中，每当一个终端接入时，基站便会根据自身统计的接入的终端的总个数以及终端的总分组个数计算得到新接入的终端属于哪个组，例如：基站总共配置的终端的总分组个数为100个，此100组从0开始进行编号，当有新终端接入时，统计得到该时刻接入的终端的总个数为230，因此由230 Mod 100得到余数为30，因此可知接入的新终端属于编号为30的组。
需要说明的是，步骤601主要强调的是每当有一个终端接入时，基站便为该终端分配一个组标识。
步骤60在具体实现时，可以包括步骤602，为接入基站的多个终端中的至少一个随机分配一个组标识。步骤602的实现方式比较简单，当有一个新的终端接入时，基站可以依据约定的规则为终端分配所属的组，例如，可以按照轮流规则进行终端的分组，即依次将接入的终端从组编号最小的组向组 编号较大的组分配，当分配到组编号最大的组时，再从组编号最小的组从新开始分配，循环分组。
应当说明的是，步骤602的组标识分配方式可以在终端接入的时刻，便为终端进行组标识的分配，也可以在约定的时刻为接入的多个终端统一进行组标识的分配。只要满足在使用组标识之前为接入的终端分配组标识即可。
步骤60在具体实现时，可以包括步骤603，根据公式：组标识＝终端标识Mod N1，为接入的终端分配一个组标识，其中，N1为基站为接入该基站的多个终端配置的总分组个数，Mod为求余数运算。
应当说明的是，步骤603根据终端自身的终端标识进行终端的分组，此终端标识可以为终端唯一的序列号。
应当说明的是，步骤603的组标识分配方式可以在终端接入的时刻，便为终端进行组标识的分配；也可以在约定的时刻为接入的多个终端统一进行组标识的分配。只要满足在使用组标识之前为接入的终端分配组标识即可。
需要说明的是，步骤601和步骤602均通过基站侧为接入的终端进行组标识的分配，因此，当步骤60以步骤601或步骤602的方式实现时，还应包括：将所述组标识发送给对应的终端的步骤；因步骤603中使用的是终端标识，接入的终端可以获知自身的终端标识，因此只要基站侧和终端侧均使用相同的规则，便能确保二者得到的终端的组标识一致，因此当步骤60以步骤603的方式实现时，不需要基站侧通知终端的组标识。
本实施例中，通过预先给接入基站的每一个终端进行分组；基站向一组终端发送触发信令，触发位于同一组的终端进行信道状态信息的反馈，且位于同一组的多个终端上报的信道状态信息可以复用在同一资源块上；此种方式，节省了基站下行信令的开销，同时提高了信道状态信息的反馈效率。
如图7所示，本公开至少一些实施例的信道状态信息的接收方法，包括：
步骤71，获得接入基站的多个终端在被分组后所在组的组标识；
步骤72，发送携带有所述组标识的触发信令，给与所述组标识对应的组中的所有终端；
需要说明的是，触发信令中携带有组标识，可以使得触发信令的发送具有较强的目的性，即只有位于所述组标识所对应的组中的终端可以进行所述 触发信令的接收及解析。
步骤73，在预设资源块上，接收具有相同组标识的一组终端依据所述触发信令分别反馈的信道状态信息。
本实施例中，基站发送的该触发信令中包含有组标识，在该触发信令发送时，便确定该触发信令触发的是与该组标识对应的一组中的所有终端均需反馈信道状态信息，从而使得基站侧发送一条触发信令，便可触发多个终端进行信道状态信息的反馈，减少了下行信令的发送。
应当说明的是，所述触发信令中还可以携带预设资源块的大小、所述预设资源块在基站配置的资源集合中的位置信息以及触发终端进行信道状态信息反馈的触发状态信息，终端根据接收到的触发信令中的上述信息，进行信道状态信息的反馈。
如图8所示，本公开至少一些实施例的信道状态信息的接收方法，包括：
步骤81，获得接入基站的多个终端在被分组后所在组的组标识；
步骤82，对携带有所述组标识的触发信令采用预设扰码进行加扰处理，得到加扰后的触发信令，所述预设扰码为根据所述组标识得到的扰码；
应当说明的是，基站侧预先对组标识变换得到预设扰码的方式进行约定，并通知终端，即终端在接收到加扰后的触发信令时，可以依据约定方式对加扰的触发信令进行解码。
步骤83，将加扰后的触发信令发送给与所述组标识对应的组中的所有终端；
步骤84，在预设资源块上，接收具有相同组标识的一组终端依据所述触发信令分别反馈的信道状态信息。
应当说明的是，本实施例中，通过利用组标识对发送的触发信令进行加扰处理，保证了触发信令传输地安全性，同时，只有属于该组标识标记组的终端可以解析得到该触发信令，以此避免了触发信令对终端的误触发。
如图9所示，本公开至少一些实施例的信道状态信息的接收方法，包括：
步骤91，获得接入基站的多个终端在被分组后所在组的组标识；
步骤92，发送触发信令给具有相同组标识的一组终端；
步骤93，在预设资源块上，接收具有相同组标识的一组终端依据所述触 发信令以及预设复用规则上报的信道状态信息。
需要说明的是，所述预设复用规则包括但不限于是时分复用、频分复用、码分复用或时频码复用。
对于时分复用，举例说明如下：
例如，如图10所示，一个PUSCH使用的子帧有两个时隙(TS0，TS1)，一个终端在TS0上报，另一个终端在TS1上报这样可以在一个子帧复用两个终端；或者TS0和TS1按照符号个数分、不同终端在不同符号上上报。
频分复用可以理解为：一个物理资源块(PRB)中有12个子载波，一个终端占用一个载波上报，这样一个物理资源块便可以复用12个终端；或者一个终端占用一组子载波上报。
而码分复用可以理解为：每个终端有各自对应的码序列、所要上报的信息用该码序列进行扩展(或掩码)之后映射到全部或部分资源块上。
通过采用复用规则，将一组终端中的每个终端上报的信道状态信息复用到一个资源块上，使得基站在解析一个资源块后可得到多个终端的信道状态信息，此种方式减少了基站的资源开销。
如图11所示，本公开至少一些实施例的信道状态信息的接收方法，包括：
步骤111，获得接入基站的多个终端在被分组后所在组的组标识；
步骤112，发送触发信令给具有相同组标识的一组终端；
步骤113，在预设资源块上，接收具有相同组标识的一组终端依据所述触发信令分别反馈的信道状态信息；
步骤114，对复用到同一预设资源块上的信道状态信息进行解调。
上述步骤114的具体实现为：依据约定的复用规则，在预设资源块上分别提取得到一组终端中每个终端分别上报的信道状态信息；然后基站依据解析到的信道状态信息进行后续的信息处理。
对本公开的实现流程的详细说明如下(以信道状态信息中的波束索引(BI)上报为例)：
1、在终端接入基站时，基站为接入的每个终端分配一个组标识(基站侧随机分配或以预定规则分配)，该组标识表明终端所属的组，然后基站将该组标识通过RRC下发给对应的终端；
2、当基站需要触发终端进行BI上报时，基站选取需要上报的一组终端的组标识，然后基站下发进行加扰处理后的携带有该组标识的DCI给终端(需要说明的是，该DCI中还可以包括接收上报的BI的资源块的大小及该资源块在基站配置的资源集合中的位置、该DCI中还可以包括需要终端反馈的BI个数，即反馈一个最佳BI或多个BI)；
3、与DCI中的组标识对应的组中的终端在接收到该DCI后，根据DCI中的信息进行BI的上报，同一组中的终端分别将自身的BI上报到同一指定资源块上；
4、基站在指定资源块接收多个终端复用到一起的多个BI，并进行BI的解调。
如图12所示，本公开至少一些实施例提供一种信道状态信息的接收装置120，包括：
第一获取模块121，用于获得接入基站的多个终端在被分组后所在组的组标识；
发送模块122，用于发送触发信令给具有相同组标识的一组终端；
第一接收模块123，用于在预设资源块上，接收具有相同组标识的一组终端依据所述触发信令分别反馈的信道状态信息。
具体的，所述组标识可以采用如下方式进行分配：
根据公式：组标识＝M Mod N1，为接入的终端分配一个组标识，其中，M为在所述终端的接入时刻，基站统计的接入的终端的总个数，N1为基站为接入该基站的多个终端配置的总分组个数，Mod为求余数运算；或者
为接入基站的多个终端中的至少一个随机分配一个组标识；或者
根据公式：组标识＝终端标识Mod N1，为接入的终端分配一个组标识，其中，N1为基站为接入该基站的多个终端配置的总分组个数，Mod为求余数运算。
所述发送模块122具体用于：
发送携带有所述组标识的触发信令，给与所述组标识对应的组中的所有终端。
可选地，所述触发信令为下行控制信息DCI或者静态控制信令或者半静 态控制信令。
可选地，所述触发信令中还携带有：预设资源块的大小、所述预设资源块在基站配置的资源集合中的位置信息以及触发终端进行信道状态信息反馈的触发状态信息。
所述发送模块122还可以包括：
加扰单元，用于对携带有所述组标识的触发信令采用预设扰码进行加扰处理，得到加扰后的触发信令，所述预设扰码为根据所述组标识得到的扰码；
发送单元，用于将加扰后的触发信令发送给与所述组标识对应的组中的所有终端。
所述第一接收模块123具体用于：
在预设资源块上，接收具有相同组标识的一组终端依据所述触发信令以及预设复用规则上报的信道状态信息；
所述预设复用规则包括：时分复用、频分复用、码分复用或时频码复用。
可选地，所述接收装置120还包括：
解调模块，用于对复用到同一预设资源块上的信道状态信息进行解调。
需要说明的是，该接收装置的实施例是与上述接收方法实施例一一对应的接收装置，上述接收方法实施例中所有实现方式均适用于该接收装置的实施例中，也能达到相同的技术效果。
如图13所示，本公开至少一些实施例提供一种基站，包括：
处理器131；以及通过总线接口132与所述处理器131相连接的存储器133，所述存储器133用于存储所述处理器131在执行操作时所使用的程序和数据，当处理器131调用并执行所述存储器133中所存储的程序和数据时，实现如下的功能模块：
第一获取模块，用于获得接入基站的多个终端在被分组后所在组的组标识；
发送模块，用于发送触发信令给具有相同组标识的一组终端；
第一接收模块，用于在预设资源块上，接收具有相同组标识的一组终端依据所述触发信令分别反馈的信道状态信息。
该处理器131还用于实现上述接收装置的其它任意一个模块的功能。
本领域技术人员可以理解，实现上述实施例的全部或者部分步骤可以通过硬件来完成，也可以通过计算机程序来指示相关的硬件来完成，所述计算机程序包括执行上述方法的部分或者全部步骤的指令；且该计算机程序可以存储于一可读存储介质中，存储介质可以是任何形式的存储介质。
与上述的信道状态信息的接收方法相对应，如图14所示，本公开至少一些实施例提供一种信道状态信息的反馈方法，包括：
步骤141，获得终端所在组的组标识；
步骤142，接收基站发送的触发信令；
步骤143，根据所述触发信令，在该组标识对应的预设资源块上，向基站反馈该终端的信道状态信息，所述预设资源块是基站为该组标识对应的组中的所有终端分配的预设资源块。
应当说明的是，该反馈方法应用于终端侧，且所述触发信令为DCI或者静态控制信令或者半静态控制信令。
可选地，所述步骤141在具体实现时，可以包括步骤1411，获取基站根据公式：组标识＝M Mod N1，为该终端分配的组标识，其中，M为在该终端的接入时刻，基站统计的接入的终端的总个数，N1为基站为接入该基站的多个终端配置的总分组个数，Mod为求余数运算。
所述步骤141在具体实现时，可以包括步骤1412，获取基站为接入基站的该终端随机分配的一个组标识。
所述步骤141在具体实现时，可以包括步骤1413，根据公式：组标识＝终端标识Mod N1，获取该终端的组标识，其中，N1为基站为接入该基站的多个终端配置的总分组个数，Mod为求余数运算。
应当说明的是，步骤1411和步骤1412为直接接收基站发送的组标识，而步骤1413为根据基站侧约定的规则，终端侧自身计算得到的组标识。
如图15所示，本公开至少一些实施例提供一种信道状态信息的反馈方法，包括：
步骤151，获得终端所在组的组标识；
步骤152，接收基站发送的携带有所述组标识的触发信令；
步骤153，根据所述触发信令，在该组标识对应的预设资源块上，向基 站反馈该终端的信道状态信息，所述预设资源块是基站为该组标识对应的组中的所有终端分配的预设资源块。
可选地，所述触发信令中还携带有：预设资源块的大小、所述预设资源块在基站配置的资源集合中的位置信息以及触发终端进行信道状态信息反馈的触发状态信息。
进一步地，所述步骤153的具体实现方式为：
根据所述触发信令，在该组标识对应的预设资源块上，利用预设复用规则向基站反馈该终端的信道状态信息；其中，
所述预设复用规则包括：时分复用、频分复用、码分复用或时频码复用。
应当说明的是，应用该反馈方法的终端在与基站进行通信时，减少了上行信道资源的开销，提高了终端对信道状态信息的反馈效率。
如图16所示，本公开至少一些实施例提供一种信道状态信息的反馈装置160，包括：
第二获取模块161，用于获得终端所在组的组标识；
第二接收模块162，用于接收基站发送的触发信令；
反馈模块163，用于根据所述触发信令，在该组标识对应的预设资源块上，向基站反馈该终端的信道状态信息，所述预设资源块是基站为该组标识对应的组中的所有终端分配的预设资源块。
其中，所述第二获取模块161具体用于：
获取基站根据公式：组标识＝M Mod N1，为该终端分配的组标识，其中，M为在该终端的接入时刻，基站统计的接入的终端的总个数，N1为基站为接入该基站的多个终端配置的总分组个数，Mod为求余数运算；或者
获取基站为接入基站的该终端随机分配的一个组标识；或者
根据公式：组标识＝终端标识Mod N1，获取该终端的组标识，其中，N1为基站为接入该基站的多个终端配置的总分组个数，Mod为求余数运算。
其中，所述第二接收模块162具体用于：
接收基站发送的携带有所述组标识的触发信令。
进一步地，所述触发信令为下行控制信息DCI或者静态控制信令或者半静态控制信令。
可选地，所述触发信令中还携带有：预设资源块的大小、所述预设资源块在基站配置的资源集合中的位置信息以及触发终端进行信道状态信息反馈的触发状态信息。
其中，所述反馈模块163具体用于：
根据所述触发信令，在该组标识对应的预设资源块上，利用预设复用规则向基站反馈该终端的信道状态信息；其中，
所述预设复用规则包括：时分复用、频分复用、码分复用或时频码复用。
需要说明的是，该反馈装置的实施例是与上述反馈方法实施例一一对应的反馈装置，上述反馈方法实施例中所有实现方式均适用于该反馈装置的实施例中，也能达到相同的技术效果。
如图17所示，本公开至少一些实施例提供一种终端，包括：
处理器171；以及通过总线接口172与所述处理器171相连接的存储器173，所述存储器173用于存储所述处理器171在执行操作时所使用的程序和数据，当处理器171调用并执行所述存储器173中所存储的程序和数据时，实现如下的功能模块：
第二获取模块，用于获得终端所在组的组标识；
第二接收模块，用于接收基站发送的触发信令；
反馈模块，用于根据所述触发信令，在该组标识对应的预设资源块上，向基站反馈该终端的信道状态信息，所述预设资源块是基站为该组标识对应的组中的所有终端分配的预设资源块。
该处理器171还用于实现上述反馈装置的其它任意一个模块的功能。
本领域技术人员可以理解，实现上述实施例的全部或者部分步骤可以通过硬件来完成，也可以通过计算机程序来指示相关的硬件来完成，所述计算机程序包括执行上述方法的部分或者全部步骤的指令；且该计算机程序可以存储于一可读存储介质中，存储介质可以是任何形式的存储介质。
以上所述的是本公开的优选实施方式，应当指出对于本技术领域的普通人员来说，在不脱离本公开所述的原理前提下还可以作出若干改进和润饰，这些改进和润饰也在本公开的保护范围内。

Claims (18)

  1. 一种信道状态信息的接收方法，包括：
    获得接入基站的多个终端在被分组后所在组的组标识；
    发送触发信令给具有相同组标识的一组终端；
    在预设资源块上，接收具有相同组标识的一组终端依据所述触发信令分别反馈的信道状态信息。
  2. 根据权利要求1所述的信道状态信息的接收方法，其中，所述组标识采用如下方式进行分配：
    根据公式：组标识＝M Mod N1，为接入的终端分配一个组标识，其中，M为在所述终端的接入时刻，基站统计的接入的终端的总个数，N1为基站为接入该基站的多个终端配置的总分组个数，Mod为求余数运算；或者
    为接入基站的多个终端中的至少一个随机分配一个组标识；或者
    根据公式：组标识＝终端标识Mod N1，为接入的终端分配一个组标识，其中，N1为基站为接入该基站的多个终端配置的总分组个数，Mod为求余数运算。
  3. 根据权利要求1所述的信道状态信息的接收方法，其中，所述发送触发信令给具有相同组标识的一组终端的步骤包括：
    发送携带有所述组标识的触发信令，给与所述组标识对应的组中的所有终端。
  4. 根据权利要求3所述的信道状态信息的接收方法，其中，所述触发信令为下行控制信息DCI或者静态控制信令或者半静态控制信令。
  5. 根据权利要求3所述的信道状态信息的接收方法，其中，所述发送携带有所述组标识的触发信令，给与所述组标识对应的组中的所有终端的步骤包括：
    对携带有所述组标识的触发信令采用预设扰码进行加扰处理，得到加扰后的触发信令，所述预设扰码为根据所述组标识得到的扰码；
    将加扰后的触发信令发送给与所述组标识对应的组中的所有终端。
  6. 根据权利要求3所述的信道状态信息的接收方法，其中，所述触发信 令中还携带有：预设资源块的大小、所述预设资源块在基站配置的资源集合中的位置信息以及触发终端进行信道状态信息反馈的触发状态信息。
  7. 根据权利要求1所述的信道状态信息的接收方法，其中，所述在预设资源块上，接收具有相同组标识的一组终端依据所述触发信令分别反馈的信道状态信息的步骤包括：
    在预设资源块上，接收具有相同组标识的一组终端依据所述触发信令以及预设复用规则上报的信道状态信息；
    所述预设复用规则包括：时分复用、频分复用、码分复用或时频码复用。
  8. 根据权利要求1所述的信道状态信息的接收方法，其中，在所述在预设资源块上，接收具有相同组标识的一组终端依据所述触发信令分别反馈的信道状态信息的步骤之后，还包括：
    对复用到同一预设资源块上的信道状态信息进行解调。
  9. 一种信道状态信息的接收装置，包括：
    第一获取模块，用于获得接入基站的多个终端在被分组后所在组的组标识；
    发送模块，用于发送触发信令给具有相同组标识的一组终端；
    第一接收模块，用于在预设资源块上，接收具有相同组标识的一组终端依据所述触发信令分别反馈的信道状态信息。
  10. 根据权利要求9所述的信道状态信息的接收装置，其中，所述组标识采用如下方式进行分配：
    根据公式：组标识＝M Mod N1，为接入的终端分配一个组标识，其中，M为在所述终端的接入时刻，基站统计的接入的终端的总个数，N1为基站为接入该基站的多个终端配置的总分组个数，Mod为求余数运算；或者
    为接入基站的多个终端中的至少一个随机分配一个组标识；或者
    根据公式：组标识＝终端标识Mod N1，为接入的终端分配一个组标识，其中，N1为基站为接入该基站的多个终端配置的总分组个数，Mod为求余数运算。
  11. 根据权利要求9所述的信道状态信息的接收装置，其中，所述发送模块具体用于：
    发送携带有所述组标识的触发信令，给与所述组标识对应的组中的所有终端。
  12. 根据权利要求11所述的信道状态信息的接收装置，其中，所述发送模块包括：
    加扰单元，用于对携带有所述组标识的触发信令采用预设扰码进行加扰处理，得到加扰后的触发信令，所述预设扰码为根据所述组标识得到的扰码；
    发送单元，用于将加扰后的触发信令发送给与所述组标识对应的组中的所有终端。
  13. 一种基站，包括：
    处理器；以及通过总线接口与所述处理器相连接的存储器，所述存储器用于存储所述处理器在执行操作时所使用的程序和数据，当处理器调用并执行所述存储器中所存储的程序和数据时，实现如下的功能模块：
    第一获取模块，用于获得接入基站的多个终端在被分组后所在组的组标识；
    发送模块，用于发送触发信令给具有相同组标识的一组终端；
    第一接收模块，用于在预设资源块上，接收具有相同组标识的一组终端依据所述触发信令分别反馈的信道状态信息。
  14. 一种信道状态信息的反馈方法，包括：
    获得终端所在组的组标识；
    接收基站发送的触发信令；
    根据所述触发信令，在该组标识对应的预设资源块上，向基站反馈该终端的信道状态信息，所述预设资源块是基站为该组标识对应的组中的所有终端分配的预设资源块。
  15. 根据权利要求14所述的信道状态信息的反馈方法，其中，所述获得终端所在组的组标识的步骤包括：
    获取基站根据公式：组标识＝M Mod N1，为该终端分配的组标识，其中，M为在该终端的接入时刻，基站统计的接入的终端的总个数，N1为基站为接入该基站的多个终端配置的总分组个数，Mod为求余数运算；或者
    获取基站为接入基站的该终端随机分配的一个组标识；或者
    根据公式：组标识＝终端标识Mod N1，获取该终端的组标识，其中，N1为基站为接入该基站的多个终端配置的总分组个数，Mod为求余数运算。
  16. 根据权利要求14所述的信道状态信息的反馈方法，其中，根据所述触发信令，在该组标识对应的预设资源块上，向基站反馈该终端的信道状态信息的步骤包括：
    根据所述触发信令，在该组标识对应的预设资源块上，利用预设复用规则向基站反馈该终端的信道状态信息；其中，
    所述预设复用规则包括：时分复用、频分复用、码分复用或时频码复用。
  17. 一种信道状态信息的反馈装置，包括：
    第二获取模块，用于获得终端所在组的组标识；
    第二接收模块，用于接收基站发送的触发信令；
    反馈模块，用于根据所述触发信令，在该组标识对应的预设资源块上，向基站反馈该终端的信道状态信息，所述预设资源块是基站为该组标识对应的组中的所有终端分配的预设资源块。
  18. 一种终端，包括：
    处理器；以及通过总线接口与所述处理器相连接的存储器，所述存储器用于存储所述处理器在执行操作时所使用的程序和数据，当处理器调用并执行所述存储器中所存储的程序和数据时，实现如下的功能模块：
    第二获取模块，用于获得终端所在组的组标识；
    第二接收模块，用于接收基站发送的触发信令；
    反馈模块，用于根据所述触发信令，在该组标识对应的预设资源块上，向基站反馈该终端的信道状态信息，所述预设资源块是基站为该组标识对应的组中的所有终端分配的预设资源块。
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