WO2017012535A1 - 一种信道状态信息的反馈及其控制方法和设备 - Google Patents
一种信道状态信息的反馈及其控制方法和设备 Download PDFInfo
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- WO2017012535A1 WO2017012535A1 PCT/CN2016/090522 CN2016090522W WO2017012535A1 WO 2017012535 A1 WO2017012535 A1 WO 2017012535A1 CN 2016090522 W CN2016090522 W CN 2016090522W WO 2017012535 A1 WO2017012535 A1 WO 2017012535A1
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- csi
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- base station
- measured
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- 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
- H04B7/0636—Feedback format
- H04B7/0643—Feedback on request
-
- 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
- H04B7/0413—MIMO systems
- H04B7/0417—Feedback systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
- H04B17/24—Monitoring; Testing of receivers with feedback of measurements to the transmitter
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- 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
-
- 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]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
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- 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
- H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
Definitions
- the present invention relates to the field of communications technologies, and in particular, to a feedback of channel state information and a method and device for controlling the same.
- the base station antenna arrays are generally horizontally aligned as shown in Figures 1A and 1B.
- the base station transmitter beam can only be adjusted in the horizontal direction.
- active antennas capable of independently controlling each antenna array have appeared in the industry, as shown in FIGS. 2A and 2B. With such an antenna array, dynamic adjustment of the beam in the vertical direction is made possible.
- the signal transmitted by the base station can not only shape the user equipment (User Equipment, UE) in the horizontal direction, but also shape the UE in the vertical direction.
- the base station In order to obtain the channel state information after the two dimensions are shaped, the base station usually performs vertical dimension shaping on the Channel State Information Reference Signals (CSI-RS) (as shown in FIG. 3), so that the UE is based on vertical. Shaped CSI-RS Feedback Channel Status Information (CSI). Therefore, the base station can pre-code the data in two vertical and horizontal directions according to the vertical dimension of the CSI-RS and the CSI fed back by the UE, and perform link adaptation.
- CSI-RS Channel State Information Reference Signals
- one cell may be configured with multiple CSI-RS resources, and different resources adopt different vertical dimension forming vectors.
- the current CSI-RS transmission is periodic, and the UE needs to perform CSIRS measurement in each period.
- periodic CSI feedback the UE needs to periodically perform CSI reporting, the feedback frequency is high, and the feedback overhead is large, thereby affecting spectrum efficiency.
- the embodiment of the invention provides a feedback and control method and device for channel state information, which solves the problem that the feedback frequency is high and the feedback overhead is large, thereby affecting the spectrum efficiency.
- the terminal receives the trigger signaling sent by the base station, where the trigger signaling is used to instruct the terminal to report the channel state information CSI obtained in the specified measurement window;
- the terminal reports the CSI measured by itself in the measurement window to the base station.
- the length of the measurement window is pre-agreed; or
- the length of the measurement window is notified to the terminal by the base station through high layer signaling;
- the trigger signaling includes information related to the length of the measurement window, wherein the information related to the length of the measurement window is the length of the measurement window, or is used to indicate that the length of the measurement window is An indication of the agreed fixed length or the length indicated in the higher layer signaling.
- the length of the measurement window is the number of subframes used for performing CSI measurement in the measurement window; or the length of the measurement window is the number of consecutive subframes included in the measurement window.
- the number of consecutive subframes included in the measurement window is a value less than or equal to N, and the N is between a subframe in which the terminal receives the trigger signaling and a subframe in which the terminal reports CSI.
- the terminal reports the measured CSI in the measurement window to the base station, including:
- the terminal After receiving the trigger signaling and passing the M subframes, the terminal reports the CSI measured in the first measurement window to the base station, where the first measurement window is before receiving the trigger signaling.
- M is an integer greater than or equal to 0, and the measurement window closest to the subframe in which the trigger signaling is received.
- the terminal reports the CSI measured in the first measurement window to the base station by using the latest physical uplink control channel (PUCCH) resource; or
- PUCCH physical uplink control channel
- the terminal reports the CSI measured by the terminal in the measurement window to the base station, including:
- the terminal After the terminal ends in the second measurement window and passes through the M subframes, the terminal reports the CSI measured by the second measurement window to the base station, and the second measurement window receives the trigger signal. And after the order and the one of the measurement windows closest to the subframe in which the trigger signaling is received, M is an integer greater than or equal to 0;
- the terminal After receiving the trigger signaling and passing the M subframes, the terminal reports the CSI measured by the second measurement window to the base station, and the second measurement window receives the trigger signal.
- M is an integer greater than or equal to 0, and one of the measurement windows that is closest to the subframe in which the trigger signaling is received.
- the terminal reports the CSI measured by the second measurement window to the base station through the latest PUCCH resource after the second measurement window ends and passes through the M subframes; or
- the terminal reports the CSI measured by the second measurement window to the base station by using the PUSCH resource on the Mth subframe after the end of the second measurement window;
- the terminal After receiving the trigger signaling and passing the M subframes, the terminal reports the CSI measured by the second measurement window to the base station by using the latest PUCCH resource; or
- the terminal by receiving the PUSCH resource, receives the self in the Mth subframe after receiving the trigger signaling.
- the CSI measured in the second measurement window is reported to the base station.
- the triggering signaling includes configuration information for indicating that the terminal performs the downlink reference signal corresponding to the CSI measurement, or indication information of the set of the configuration information of the downlink reference signal corresponding to the CSI measurement.
- the base station sends the trigger signaling to the terminal, to instruct the terminal to report the channel state information CSI obtained in the specified measurement window;
- the base station receives the CSI measured by the terminal and measured in the measurement window.
- the length of the measurement window is pre-agreed; or
- the length of the measurement window is notified to the terminal by the base station through high layer signaling;
- the trigger signaling includes information related to the length of the measurement window, wherein the information related to the length of the measurement window is the length of the measurement window, or is used to indicate that the length of the measurement window is An indication of the agreed fixed length or the length indicated in the higher layer signaling.
- the length of the measurement window is the number of subframes used for performing CSI measurement in the measurement window; or the length of the measurement window is the number of consecutive subframes included in the measurement window.
- the number of consecutive subframes included in the measurement window is a value less than or equal to N, where the N is a subframe in which the base station sends the trigger signaling, and the base station receives the CSI reported by the terminal.
- the receiving, by the base station, the CSI measured by the terminal and measured in the measurement window includes:
- the base station After transmitting the trigger signaling and passing the M subframes, the base station receives the CSI measured by the terminal and measured in the first measurement window, where the first measurement window is before sending the trigger signaling Sending the measurement window of the most recent subframe of the trigger signaling, M is an integer greater than or equal to 0.
- the base station After transmitting the trigger signaling and passing the M subframes, the base station receives the CSI measured by the terminal and measured in the first measurement window by using the latest PUCCH resource; or
- the base station receives, by using the PUSCH resource, the CSI measured by the terminal in the first measurement window, in the Mth subframe after the triggering signaling is sent.
- the receiving, by the base station, the CSI measured by the terminal and measured in the measurement window includes:
- the base station After receiving the M subframes, the base station receives the CSI measured by the terminal and measured in the second measurement window, where the second measurement window is after the trigger signaling is sent.
- M One of the measurement windows closest to the subframe in which the trigger signaling is sent, M is an integer greater than or equal to 0;
- the base station After transmitting the trigger signaling and passing M subframes, the base station receives the second measurement window reported by the terminal.
- the CSI obtained by the intra-oral measurement is the measurement window after the trigger signaling is sent and is the closest to the subframe in which the trigger signaling is sent, and M is an integer greater than or equal to 0.
- the base station receives the CSI measured by the terminal and measured in the second measurement window by using the latest PUCCH resource; or
- the base station After transmitting the trigger signaling and passing the M subframes, the base station receives, by using the latest PUCCH resource, the CSI measured by the terminal in the second measurement window; or
- the base station receives, by using the PUSCH resource, the CSI measured by the terminal in the second measurement window, in the Mth subframe after the triggering signaling is sent.
- the triggering signaling includes configuration information for indicating that the terminal performs the downlink reference signal corresponding to the CSI measurement, or indication information of the set of the configuration information of the downlink reference signal corresponding to the CSI measurement.
- a receiving module configured to receive the triggering signaling sent by the base station, where the triggering signaling is used to instruct the device to report channel state information CSI obtained in a specified measurement window;
- the processing module is configured to report the CSI measured by the measurement window in the measurement window to the base station.
- the length of the measurement window is pre-agreed; or
- the length of the measurement window is notified to the device by the base station through high layer signaling;
- the trigger signaling includes information related to the length of the measurement window, wherein the information related to the length of the measurement window is the length of the measurement window, or is used to indicate that the length of the measurement window is An indication of the agreed fixed length or the length indicated in the higher layer signaling.
- the length of the measurement window is the number of subframes used for performing CSI measurement in the measurement window; or the length of the measurement window is the number of consecutive subframes included in the measurement window.
- the number of consecutive subframes included in the measurement window is a value less than or equal to N, and the N is a continuous subframe included between a subframe that receives the trigger signaling and a subframe that reports CSI. Number.
- the processing module is specifically configured to:
- the receiving module After the receiving module receives the trigger signaling and passes through the M subframes, the CSI measured by the first measurement window is reported to the base station, and the first measurement window receives the trigger.
- M is an integer greater than or equal to 0.
- the processing module is specifically configured to
- the CSI measured by the first measurement window is reported to the base station by using the latest PUCCH resource; or Receiving, by the receiving module, the Mth subframe after the trigger signaling, using the PUSCH resource, the self is in the first measurement window.
- the measured CSI is reported to the base station.
- processing module is specifically configured to:
- the CSI measured by the second measurement window is reported to the base station, and the second measurement window is after receiving the trigger signaling.
- M is an integer greater than or equal to 0;
- the receiving module After receiving the trigger signaling and passing the M subframes, the receiving module reports the CSI measured in the second measurement window to the base station, and the second measurement window receives the trigger. After the signaling and one of the measurement windows closest to the subframe in which the trigger signaling is received, M is an integer greater than or equal to zero.
- the processing module is specifically configured to:
- the CSI measured by the second measurement window is reported to the base station by using the latest PUCCH resource;
- the CSI measured by the second measurement window is reported to the base station by using the PUSCH resource on the Mth subframe after the end of the second measurement window;
- the receiving module After the receiving module receives the trigger signaling and passes through the M subframes, the CSI measured by the second measurement window is reported to the base station by using the latest PUCCH resource; or
- the CSI measured by the second measurement window is reported to the base station by using the PUSCH resource on the Mth subframe after the receiving module receives the trigger signaling.
- a sending module configured to send trigger signaling to the terminal, to instruct the terminal to report channel state information CSI obtained in a specified measurement window;
- the receiving module is configured to receive the CSI measured by the terminal and measured in the measurement window.
- the length of the measurement window is pre-agreed; or
- the length of the measurement window is notified to the terminal by the device through high layer signaling;
- the trigger signaling includes information related to the length of the measurement window, wherein the information related to the length of the measurement window is the length of the measurement window, or is used to indicate that the length of the measurement window is An indication of the agreed fixed length or the length indicated in the higher layer signaling.
- the length of the measurement window is the number of subframes used for performing CSI measurement in the measurement window; or the length of the measurement window is the number of consecutive subframes included in the measurement window.
- the number of consecutive subframes included in the measurement window is a value less than or equal to N, where the N is between the subframe that sends the trigger signaling and the subframe that receives the CSI reported by the terminal.
- the receiving module is specifically configured to:
- the sending module After the sending module sends the trigger signaling and passes through M subframes, receiving the first measurement reported by the terminal The measured CSI is measured in the quantity window.
- the first measurement window is one of the measurement windows before the trigger signaling and is closest to the subframe in which the trigger signaling is sent, and M is an integer greater than or equal to 0.
- the receiving module is specifically configured to:
- the sending module After the sending module sends the trigger signaling and passes through the M subframes, the CSI measured by the terminal and measured in the first measurement window is received by the latest PUCCH resource;
- the receiving module is specifically configured to:
- the CSI measured by the terminal and measured in the second measurement window is received, where the second measurement window is sent after the trigger signaling
- M is an integer greater than or equal to 0;
- the sending module After the sending module sends the trigger signaling and passes through M subframes, receiving CSI measured by the terminal in the second measurement window, where the second measurement window is after sending the trigger signaling
- M One of the measurement windows closest to the subframe in which the trigger signaling is transmitted, M is an integer greater than or equal to zero.
- the receiving module is specifically configured to:
- the CSI measured by the terminal and measured in the second measurement window is received by using the latest PUCCH resource;
- the sending module After the sending module sends the trigger signaling and passes through M subframes, receives the CSI measured by the terminal and measured in the second measurement window by using the latest PUCCH resource; or
- the CSI measured in the second measurement window reported by the terminal is received by the PUSCH resource on the Mth subframe after the sending of the triggering signaling by the sending module.
- a terminal provided by an embodiment of the present invention includes a receiver, a transmitter, and at least one processor respectively connected to the receiver and the transmitter, where:
- the receiver is configured to: receive trigger signaling sent by the base station, where the trigger signaling is used to instruct the terminal to report channel state information CSI obtained in a specified measurement window;
- the processor is configured to read a program in the memory, and execute the following process: triggering the transmitter to report the CSI measured by the processor in the measurement window to the base station.
- the length of the measurement window is pre-agreed; or
- the length of the measurement window is notified to the terminal by the base station through high layer signaling;
- the trigger signaling includes information related to a length of the measurement window, where the length of the measurement window is long
- the degree-related information is the length of the measurement window, or indication information indicating that the length of the measurement window is a predetermined length fixed or a length indicated in higher layer signaling.
- the length of the measurement window is the number of subframes used for performing CSI measurement in the measurement window; or the length of the measurement window is the number of consecutive subframes included in the measurement window.
- the number of consecutive subframes included in the measurement window is a value less than or equal to N, and the N is a continuous subframe included between a subframe that receives the trigger signaling and a subframe that reports CSI. Number.
- the processor specifically performs:
- the triggering transmitter After the receiver receives the trigger signaling and passes through the M subframes, the triggering transmitter sends the CSI measured by the processor in the first measurement window to the base station, where the first measurement window is sent.
- M is an integer greater than or equal to 0 before receiving the trigger signaling and one of the measurement windows closest to the subframe in which the trigger signaling is received.
- the processor specifically executes:
- the receiver After the receiver receives the trigger signaling and passes the M subframes, triggering the transmitter to report the CSI measured by the processor in the first measurement window to the And transmitting, by the base station, the CSI measured by the processor in the first measurement window, by using the PUSCH resource, on the Mth subframe after the receiver receives the trigger signaling, The base station.
- the processor specifically executes:
- the triggering transmitter sends the CSI measured by the processor in the second measurement window to the base station, where the second measurement window is received.
- M is an integer greater than or equal to 0;
- the triggering transmitter After the receiver receives the trigger signaling and passes through the M subframes, the triggering transmitter sends the CSI measured by the processor in the second measurement window to the base station, and the second measurement window M is an integer greater than or equal to 0 after receiving the trigger signaling and one of the measurement windows closest to the subframe in which the trigger signaling is received.
- the processor specifically executes:
- the triggering device sends the CSI measured by the processor in the second measurement window to the base station by using the latest PUCCH resource;
- the triggering transmitter After the receiver receives the trigger signaling and passes through the M subframes, the triggering transmitter sends the CSI measured by the processor in the second measurement window to the Base station; or
- a base station provided by an embodiment of the present invention includes a receiver, a transmitter, and at least one processor respectively connected to the receiver and the transmitter, where:
- the processor is configured to read a program in the memory, and execute the following process: triggering the transmitter to send the trigger signaling to the terminal, to instruct the terminal to report the channel state information CSI obtained in the specified measurement window;
- the receiver is configured to: receive the CSI measured by the terminal and measured in the measurement window.
- the length of the measurement window is pre-agreed; or
- the length of the measurement window is notified to the terminal by the base station through high layer signaling;
- the trigger signaling includes information related to the length of the measurement window, wherein the information related to the length of the measurement window is the length of the measurement window, or is used to indicate that the length of the measurement window is An indication of the agreed fixed length or the length indicated in the higher layer signaling.
- the length of the measurement window is the number of subframes used for performing CSI measurement in the measurement window; or the length of the measurement window is the number of consecutive subframes included in the measurement window.
- the number of consecutive subframes included in the measurement window is a value less than or equal to N, where the N is between the subframe that sends the trigger signaling and the subframe that receives the CSI reported by the terminal.
- the receiver specifically performs:
- M is an integer greater than or equal to zero.
- the receiver specifically executes:
- the transmitter After the transmitter sends the trigger signaling and passes through M subframes, receives the CSI measured by the terminal and measured in the first measurement window by using the latest PUCCH resource;
- the receiver specifically performs:
- the CSI measured by the terminal and measured in the second measurement window is received, where the second measurement window is sent after the trigger signaling
- M is an integer greater than or equal to 0;
- M is an integer greater than or equal to zero.
- the receiver specifically executes:
- the CSI measured by the terminal and measured in the second measurement window is received by using the latest PUCCH resource;
- the transmitter After the transmitter sends the trigger signaling and passes through M subframes, receives the CSI measured by the terminal in the second measurement window by using the latest PUCCH resource; or
- the CSI measured in the second measurement window reported by the terminal is received by the PUSCH resource in the Mth subframe after the transmitter sends the trigger signaling.
- a feedback device for channel state information includes a receiver, a transmitter, and at least one processor respectively connected to the receiver and the transmitter, where:
- the receiver is configured to: receive trigger signaling sent by the base station, where the trigger signaling is used to instruct the terminal to report channel state information CSI obtained in a specified measurement window;
- the processor is configured to read a program in the memory, and execute the following process: triggering the transmitter to report the CSI measured by the processor in the measurement window to the base station.
- the length of the measurement window is pre-agreed
- the length of the measurement window is notified to the terminal by the base station through high layer signaling;
- the trigger signaling includes information related to the length of the measurement window, wherein the information related to the length of the measurement window is the length of the measurement window, or is used to indicate that the length of the measurement window is An indication of the agreed fixed length or the length indicated in the higher layer signaling.
- the length of the measurement window is a number of subframes used for performing CSI measurement in the measurement window; or the length of the measurement window is a number of consecutive subframes included in the measurement window.
- the number of consecutive subframes included in the measurement window is a value less than or equal to N, and the N is a continuous subframe included between a subframe that receives the trigger signaling and a subframe that reports CSI. Number.
- the processor specifically executes:
- the triggering transmitter After the receiver receives the trigger signaling and passes through the M subframes, the triggering transmitter sends the CSI measured by the processor in the first measurement window to the base station, where the first measurement window is sent.
- M is an integer greater than or equal to 0 before receiving the trigger signaling and one of the measurement windows closest to the subframe in which the trigger signaling is received.
- the processor specifically executes:
- the receiver After the receiver receives the trigger signaling and passes the M subframes, triggering the transmitter to report the CSI measured by the processor in the first measurement window to the And transmitting, by the base station, the CSI measured by the processor in the first measurement window, by using the PUSCH resource, on the Mth subframe after the receiver receives the trigger signaling, The base station.
- the processor specifically executes:
- the triggering transmitter sends the CSI measured by the processor in the second measurement window to the base station, where the second measurement window is received.
- M is an integer greater than or equal to 0;
- the triggering transmitter After the receiver receives the trigger signaling and passes through the M subframes, the triggering transmitter sends the CSI measured by the processor in the second measurement window to the base station, and the second measurement window M is an integer greater than or equal to 0 after receiving the trigger signaling and one of the measurement windows closest to the subframe in which the trigger signaling is received.
- the processor specifically executes:
- the triggering device sends the CSI measured by the processor in the second measurement window to the base station by using the latest PUCCH resource;
- the triggering transmitter After the receiver receives the trigger signaling and passes through the M subframes, the triggering transmitter sends the CSI measured by the processor in the second measurement window to the Base station; or
- the MSI triggers the transmitter to report the CSI measured by the processor in the second measurement window to the base station by using a PUSCH resource.
- a feedback control device for channel state information includes a receiver, a transmitter, and at least one processor respectively connected to the receiver and the transmitter, where:
- the processor is configured to read a program in the memory, and execute the following process: triggering the transmitter to send the trigger signaling to the terminal, to instruct the terminal to report the channel state information CSI obtained in the specified measurement window;
- the receiver is configured to: receive the CSI measured by the terminal and measured in the measurement window.
- the length of the measurement window is pre-agreed
- the length of the measurement window is notified to the terminal by the base station through high layer signaling;
- the trigger signaling includes information related to the length of the measurement window, wherein the information related to the length of the measurement window is the length of the measurement window, or is used to indicate that the length of the measurement window is An indication of the agreed fixed length or the length indicated in the higher layer signaling.
- the length of the measurement window is the number of subframes used for performing CSI measurement in the measurement window; or the length of the measurement window is the number of consecutive subframes included in the measurement window.
- the number of consecutive subframes included in the measurement window is a value less than or equal to N, where the N is between the subframe that sends the trigger signaling and the subframe that receives the CSI reported by the terminal.
- the receiver specifically executes:
- M is an integer greater than or equal to zero.
- the receiver specifically executes:
- the transmitter After the transmitter sends the trigger signaling and passes through M subframes, receives the CSI measured by the terminal and measured in the first measurement window by using the latest PUCCH resource;
- the CSI measured in the first measurement window reported by the terminal is received by the PUSCH resource in the Mth subframe after the transmitter 122 sends the trigger signaling.
- the receiver specifically executes:
- the CSI measured by the terminal and measured in the second measurement window is received, where the second measurement window is sent after the trigger signaling
- M is an integer greater than or equal to 0;
- M is an integer greater than or equal to zero.
- the receiver specifically executes:
- the CSI measured by the terminal and measured in the second measurement window is received by using the latest PUCCH resource;
- the transmitter 122 After the transmitter 122 sends the trigger signaling and passes through M subframes, receives the CSI measured by the terminal and measured in the second measurement window by using the latest PUCCH resource; or
- the CSI measured in the second measurement window reported by the terminal is received by the PUSCH resource in the Mth subframe after the transmitter 122 sends the trigger signaling.
- the embodiment of the present invention provides a channel state information feedback scheme based on aperiodic CSI-RS transmission. After receiving the trigger signaling sent by the base station, the terminal reports the CSI measured by the terminal in the specified measurement window to the CSI. Base station. Since the terminal only reports the CSI measured by the terminal in the specified measurement window, the frequency of the CSI feedback by the terminal is reduced, and the CSI feedback overhead is also reduced.
- 1A is a schematic structural diagram of a first type of base station antenna array
- 1B is a schematic structural diagram of a second base station antenna array
- 2A is a schematic structural diagram of a third base station antenna array
- 2B is a schematic structural diagram of a fourth base station antenna array
- FIG. 3 is a schematic diagram of a CSI-RS transmission method
- FIG. 4 is a schematic diagram of a method for feeding back channel state information according to the present invention.
- FIG. 5 is a timing diagram of processing performed by a base station and a terminal according to the present invention.
- FIG. 6 is a schematic diagram of a feedback control method for channel state information according to the present invention.
- FIG. 7 is a sequence diagram of processing performed by a base station and a terminal in Embodiment 1 according to the present invention.
- FIG. 8 is a sequence diagram of processing performed by a base station and a terminal in Embodiment 2 according to the present invention.
- FIG. 9 is a schematic diagram of a feedback device for channel state information according to the present invention.
- FIG. 10 is a schematic diagram of a feedback control device for channel state information according to the present invention.
- FIG. 11 is a schematic diagram of a terminal provided by the present invention.
- FIG. 12 is a schematic diagram of a base station provided by the present invention.
- GSM Global System of Mobile communication
- CDMA Code Division Multiple Access
- WCDMA Wideband Code Division Multiple Access
- GPRS General Packet Radio Service
- LTE Long Term Evolution
- LTE-A Advanced Long Term Evolution
- UMTS Universal Mobile Telecommunication System
- the user equipment includes but is not limited to a mobile station (Mobile Station, MS), a mobile terminal (Mobile Terminal), a mobile phone (Mobile Telephone), a mobile phone (handset). And portable devices, etc., the user equipment can communicate with one or more core networks via a Radio Access Network (RAN), for example, the user equipment can be a mobile phone (or "cellular"
- RAN Radio Access Network
- the user equipment can be a mobile phone (or "cellular"
- the telephone device, the computer with wireless communication function, etc., the user equipment can also be a mobile device that is portable, pocket-sized, handheld, built-in, or in-vehicle.
- a base station may refer to a device in an access network that communicates with a wireless terminal over one or more sectors over an air interface.
- the base station can be configured to convert the received air frame and the IP packet into a router between the wireless terminal and the rest of the access network, wherein the rest of the access network can include an internet protocol. (IP) network.
- IP internet protocol
- the base station can also coordinate attribute management of the air interface.
- the base station may be a Base Transceiver Station (BTS) in GSM or CDMA, or may be a base station (NodeB) in WCDMA, or may be an evolved base station in LTE (NodeB or eNB or e-NodeB, evolutional Node B), the invention is not limited.
- BTS Base Transceiver Station
- NodeB base station
- NodeB evolved base station
- LTE Long Term Evolutional Node B
- An embodiment of the present invention provides a method for feeding back channel state information. As shown in FIG. 4, the method includes:
- the terminal receives the trigger signaling sent by the base station, where the trigger signaling is used to instruct the terminal to report the CSI obtained in the specified measurement window.
- the terminal reports the CSI measured by itself in the specified measurement window to the base station.
- the embodiment of the present invention provides a channel state information feedback scheme. After receiving the trigger signaling sent by the base station, the terminal reports the CSI measured by the terminal in the specified measurement window to the base station. Since the terminal only reports the CSI measured by the terminal in the specified measurement window, the frequency of the CSI feedback by the terminal is reduced, and the CSI feedback overhead is also reduced.
- the triggering signaling includes configuration information for indicating that the terminal performs the downlink reference signal corresponding to the CSI measurement, or the indication information of the set of the configuration information of the downlink reference signal corresponding to the CSI measurement.
- the configuration information of the downlink reference signal includes: CSI-RS resource configuration, Cell-specific Reference Signals (CRS) resource configuration, or interference measurement resource configuration.
- CSI-RS resource configuration includes: Cell-specific Reference Signals (CRS) resource configuration, or interference measurement resource configuration.
- CRS Cell-specific Reference Signals
- the base station and the terminal know the configuration information of all the downlink reference signals in advance, and the base station indicates the configuration information of the downlink reference signal corresponding to the CSI measurement by the base station by using the trigger signaling, for example, the indication information is indicated by using 2-bit information.
- 00 indicates CSI-RS resource configuration 1
- 01 indicates CSI-RS resource configuration 2
- 10 indicates CSI-RS resource configuration 3 and the like.
- the base station and the terminal know in advance the set of configuration information of all downlink reference signals, and the base station indicates, by using the trigger signaling, the configuration information set of the downlink reference signal corresponding to the CSI measurement by the terminal, for example, the indication information is indicated by using 2-bit information, and 00 indicates CSI-RS resource configuration 1 and CSI-RS resource configuration 2, 01 indicates CSI-RS resource configuration 1 and CSI-RS resource configuration 3, and 10 indicates CSI-RS resource configuration 1, CSI-RS resource configuration 2. A collection of CSI-RS resource configuration 3, and the like.
- the length of the specified measurement window includes the following three preferred implementation manners:
- Method 1 the length of the specified measurement window is pre-agreed.
- the pre-agreed manner may be any manner that can ensure that the awareness of the length of the measurement window is consistent between the base station side and the terminal side, such as by specification or protocol reservation, agreement between vendors, and the like.
- Mode 2 The length of the specified measurement window is notified to the terminal by the base station through high layer signaling.
- the base station specifies the length of the measurement window and uses high-level signaling, such as radio resource control (Radio Resource). Control, RRC) or Media Access Control (MAC) signaling, notifying the terminal of the length of the specified measurement window.
- high-level signaling such as radio resource control (Radio Resource). Control, RRC) or Media Access Control (MAC) signaling, notifying the terminal of the length of the specified measurement window.
- Radio Resource Radio Resource
- RRC Radio Resource Control
- MAC Media Access Control
- the trigger signaling includes information related to the length of the specified measurement window, wherein the information related to the length of the specified measurement window is a specific value of a length of the specified measurement window, or is used to indicate a specified measurement window.
- the length is a pre-agreed fixed length or indication of the length indicated in the higher layer signaling.
- the base station notifies the length of the measurement window specified by the terminal by using the trigger signaling, and the trigger signaling may directly carry the length of the specified measurement window, or may carry the length of the specified measurement window to a predetermined fixed length. Or indication of the length indicated in the higher layer signaling.
- the terminal can know whether the length of the specified measurement window is a predetermined fixed length or whether the base station notifies the terminal by the high layer signaling.
- the indication information uses 1-bit information, where 0 indicates that the length of the specified measurement window is a predetermined fixed length, and 1 indicates that the length of the specified measurement window is the length indicated in the higher layer signaling.
- the length of the specified measurement window is the number of subframes used for CSI measurement in the measurement window; or the length of the specified measurement window is the number of consecutive subframes included in the measurement window.
- the length of the specified measurement window may be defined by a number k of subframes used for performing CSI measurement included in the measurement window, and a subframe for performing CSI measurement (such as a CSI-RS transmission subframe), for example, If the number of subframes for performing CSI measurement in the measurement window is k, it means that the measurement window should contain k subframes for performing CSI measurement, and the number of consecutive subframes actually included in the measurement window. There is no limit.
- the specified measurement window includes a number of consecutive subframes that is less than or equal to N, and N is a consecutive subframe included between the subframe in which the terminal receives the trigger signaling and the subframe in which the terminal reports the CSI. number.
- the terminal reports the CSI measured in the specified measurement window to the base station, and includes the following three implementation manners:
- the terminal After receiving the trigger signaling and passing the M subframes, the terminal reports the CSI measured in the first measurement window to the base station, where the first measurement window receives the trigger signaling and receives the trigger signal.
- the most recent measurement window of the ordered subframe, M is an integer greater than or equal to zero.
- M The value of M is pre-agreed, or is determined by the base station and notified to the terminal through high layer signaling, or is determined by the base station and notified to the terminal by trigger signaling.
- FDD Frequency Division Duplex
- the terminal can always measure the received reference signal for performing CSI, but does not perform reporting, until after receiving the trigger signaling, the terminal will be the closest to the subframe that receives the trigger signaling.
- the CSI measured in the measurement window ie, the first measurement window
- the CSI measured in other windows does not need to be reported.
- the determination of the first measurement window is as shown in FIG. 5.
- the base station periodically transmits the CSI-RS signal, and the vertical shaping vectors used by the CSI-RS signals may be different in different periods, and the period of the CSI-RS is assumed. Is 4.
- the CSI-RS transmitted in subframe n-8 adopts the vertical shaping vector of UE1, and the CSI-RS in subframes n-4 and n adopts the vertical shaping vector of UE2.
- the base station transmits trigger signaling to UE2 in subframe n+1.
- the first measurement window is from subframe n-4 to subframe n for UE2; if the length of the specified measurement window is 6 For the frame, the first measurement window is from subframe n-5 to subframe n for UE2.
- the terminal measures the first measurement window through the latest Physical Uplink Control Channel (PUCCH) resource.
- PUCCH Physical Uplink Control Channel
- the terminal uses the physical uplink control channel (PUSCH) resource to measure the CSI measured in the first measurement window in the Mth subframe after receiving the trigger signaling. , reported to the base station.
- PUSCH physical uplink control channel
- Manner 2 After the terminal ends in the second measurement window and passes through the M subframes, the terminal reports the CSI measured in the second measurement window to the base station, where the second measurement window receives the trigger signaling and receives the A specified measurement window closest to the subframe in which the signaling is triggered, M being an integer greater than or equal to zero.
- the terminal does not perform CSI measurement before receiving the trigger signaling, and starts CSI measurement after receiving a trigger signaling and a specified measurement window (ie, a second measurement window) that is closest to the subframe in which the trigger signaling is received. And the obtained CSI is reported to the base station.
- a specified measurement window ie, a second measurement window
- the determination of the first measurement window is still taken as an example.
- the base station periodically transmits a CSI-RS signal, and the vertical shaping vectors used by the CSI-RS signals may be different in different periods, assuming CSI- The period of the RS is 4.
- the CSI-RS transmitted in subframe n-8 adopts the vertical shaping vector of UE1
- the CSI-RS in subframes n-4 and n adopts the vertical shaping vector of UE2.
- the base station transmits trigger signaling to UE2 in subframe n-6.
- the second measurement window is from subframe n-4 to subframe n for UE2; if the length of the specified measurement window is 6 For the frame, the second measurement window is from subframe n-5 to subframe n for UE2.
- the terminal reports the CSI measured by the second measurement window to the base station through the latest PUCCH resource after the second measurement window ends and passes through the M subframes.
- the terminal reports the CSI measured in the second measurement window to the base station through the PUSCH resource after the second measurement window ends and passes through the M subframes.
- Manner 3 After receiving the trigger signaling and passing the M subframes, the terminal reports the CSI measured in the second measurement window to the base station, and the second measurement window receives the trigger signaling and receives the A specified measurement window closest to the subframe in which the signaling is triggered, and M is an integer greater than or equal to zero.
- the terminal reports the CSI measured by the second measurement window to the base station through the latest PUCCH resource.
- the terminal reports the CSI measured by the second measurement window to the base station through the PUSCH resource.
- one cell may be configured with multiple CSI-RS resources, and different resources adopt different vertical dimension shaping vectors. If more vertical beams are used in one cell, each beam needs to be required.
- a corresponding CSI-RS resource causes the CSI-RS in the cell to occupy a large amount of physical resources, which affects spectrum efficiency.
- a CSI-RS resource is shared by multiple terminals, and the base station can use different shaping vectors to shape the CSI-RS resources at different times, respectively, for CSI measurement of different terminals. And feedback.
- the base station is required to instruct each terminal to perform CSI measurement at the transmission timing of the CSI-RS corresponding to the configuration vector exclusive to the terminal. At other times, although the base station still sends CSI-RS, the transmitted CSI-RS is meaningless to the terminal.
- the feedback scheme of the channel state information provided by the embodiment of the present invention may be applied to the foregoing CSI-RS transmission, specifically: for a terminal sharing the same CSI-RS, a pilot signal in a specified measurement window corresponding to each terminal
- the base station performs the shaping of the CSI-RS resource by using the terminal-specific shaping vector, thereby effectively improving the efficiency of the CSI-RS and reducing the CSI-RS resource overhead, especially in a scenario where fewer users are scheduled in the system.
- an embodiment of the present invention provides a feedback control method for channel state information. As shown in FIG. 6, the method includes:
- the base station sends a trigger signaling to the terminal, to instruct the terminal to report the CSI obtained in the specified measurement window.
- the base station receives the CSI measured by the terminal and measured in a predetermined measurement window.
- the embodiment of the present invention provides a channel state information feedback control scheme based on aperiodic CSI-RS transmission, where the base station sends trigger signaling to the terminal to instruct the terminal to report the CSI obtained in the specified measurement window; The resulting CSI is measured within a defined measurement window. Since the terminal only reports the CSI measured by the terminal in the specified measurement window, the frequency of the CSI feedback by the terminal is reduced, and the CSI feedback overhead is also reduced.
- the length of the specified measurement window is pre-agreed
- the length of the specified measurement window is notified to the terminal by the base station through high layer signaling;
- the trigger signaling includes information related to the length of the specified measurement window, wherein the information related to the length of the specified measurement window is the length of the specified measurement window, or is used to indicate that the length of the specified measurement window is pre-agreed. An indication of the length indicated in the fixed length or higher layer signaling.
- the length of the specified measurement window is the number of subframes used for performing CSI measurement in a specified measurement window; or the length of the specified measurement window is the number of consecutive subframes included in the specified measurement window.
- the specified measurement window includes a number of consecutive subframes that is less than or equal to N, and N is sent by the base station.
- N is sent by the base station. The number of consecutive subframes included between the subframe in which the trigger signaling is sent and the subframe in which the base station receives the CSI reported by the terminal.
- the base station receives, by the terminal, the CSI measured in the specified measurement window, including:
- the base station After transmitting the trigger signaling and passing the M subframes, the base station receives the CSI measured by the terminal in the first measurement window, where the first measurement window is the one closest to the subframe in which the trigger signaling is sent before the trigger signaling is sent.
- the specified measurement window, M is an integer greater than or equal to zero.
- the base station After transmitting the trigger signaling and passing the M subframes, the base station receives the CSI measured by the terminal and measured in the first measurement window by using the latest PUCCH resource.
- the base station transmits the CSI measured in the first measurement window reported by the terminal through the PUSCH resource in the Mth subframe after the trigger signaling is sent.
- the base station receives, by the terminal, the CSI measured in the specified measurement window, including:
- the base station After the base station ends in the second measurement window and passes through the M subframes, the base station receives the CSI measured in the second measurement window, and the second measurement window is sent after the trigger signaling and is closest to the subframe in which the trigger signaling is sent.
- a specified measurement window, M is an integer greater than or equal to zero.
- the base station receives the CSI measured by the terminal and measured in the second measurement window by using the latest PUCCH resource.
- the base station receives the CSI measured by the terminal in the second measurement window by using the PUSCH resource on the Mth subframe after the end of the second measurement window.
- the base station receives, by the terminal, the CSI measured in the specified measurement window, including:
- the base station After transmitting the trigger signaling and passing the M subframes, the base station receives the CSI measured by the terminal in the second measurement window, and the second measurement window is the one that sends the trigger signaling and is the closest to the subframe that sends the trigger signaling.
- the specified measurement window, M is an integer greater than or equal to zero.
- the base station After transmitting the trigger signaling and passing the M subframes, the base station receives the CSI measured by the terminal and measured in the second measurement window by using the latest PUCCH resource.
- the base station transmits the CSI measured in the second measurement window reported by the terminal through the PUSCH resource in the Mth subframe after the trigger signaling is sent.
- the triggering signaling includes configuration information for indicating that the terminal performs the downlink reference signal corresponding to the CSI measurement, or indication information of the configuration information of the downlink reference signal set corresponding to the CSI measurement.
- the feedback control scheme of the channel state information provided by the embodiment of the present invention may be applied to aperiodic CSI-RS transmission, specifically: for a terminal sharing the same CSI-RS, a guide in a specified measurement window corresponding to each terminal
- the frequency signal may be obtained by the base station by using the shape-specific vector of the terminal for the CSI-RS resource, so that Effectively improve the efficiency of CSI-RS, reduce the CSI-RS resource overhead, especially in the system to schedule fewer users.
- the base station periodically transmits the CSI-RS signal, and the shaping vectors used by the CSI-RS signals may be different in different periods, and the period of the CSI-RS is assumed to be T.
- the CSI-RS transmitted in the subframe n-2T adopts the shaping vector of the UE1
- the CSI-RS in the subframes n-T and n adopts the shaping vector of the UE2, and its timing chart is as shown in FIG. 7.
- the base station triggers UE2 to perform CSI feedback by using Downlink Control Information (DCI) in subframe n+2.
- DCI Downlink Control Information
- the CSI measures the measured CSI on the subframe, that is, the CSI measured on the subframes nT and n. Therefore, the CSI reported by the UE is obtained based on the CSI-RS measurement of its own shaped vector.
- the CSI-RS transmitted in the subframe n-10 adopts the shaping vector of the UE1
- the CSI-RS in the subframes n-5 and n adopts the shaping vector of the UE2, and its timing chart is as shown in FIG. 8.
- UE2 Before receiving the trigger signaling, UE2 learns the CSI-RS resource configuration through the high layer signaling, but does not need to perform CSI measurement based on the CSI-RS.
- the base station triggers UE2 to perform CSI measurement and feedback through DCI in subframe n-7.
- the terminal may perform channel information measurement based on two CSI-RS subframes (ie, subframe n-5 and subframe n) in the measurement window, and the CSI-RS in the two subframes adopts a shape vector of the UE2.
- the base station may also shape the CSI-RS by using other shaping vectors.
- the base station may shape the CSI-RS by using a horizontally dimensioned shaping vector; for example, the base station may also shape the CSI-RS by using a horizontally and vertically two-dimensional shaped vector.
- the above method processing flow can be implemented by a software program, which can be stored in a storage medium, and when the stored software program is called, the above method steps are performed.
- a feedback device for channel state information is also provided in the embodiment of the present invention. Since the principle of solving the problem is similar to the feedback method of the channel state information, the implementation of the device may refer to the method. Implementation, repetition will not be repeated.
- a feedback device for channel state information provided by the embodiment of the present invention is as shown in FIG.
- the receiving module 91 is configured to receive the triggering signaling sent by the base station, where the triggering signaling is used to indicate that the device reports the channel state information CSI obtained in the specified measurement window;
- the processing module 92 is configured to report the CSI measured by the measurement window in the measurement window to the base station.
- the length of the measurement window is pre-agreed
- the length of the measurement window is notified to the device by the base station through high layer signaling;
- the trigger signaling includes information related to the length of the measurement window, wherein the information related to the length of the measurement window is the length of the measurement window, or is used to indicate that the length of the measurement window is An indication of the agreed fixed length or the length indicated in the higher layer signaling.
- the length of the measurement window is the number of subframes used for performing CSI measurement in the measurement window; or the length of the measurement window is the number of consecutive subframes included in the measurement window.
- the number of consecutive subframes included in the measurement window is a value less than or equal to N, and the N is a continuous subframe included between a subframe that receives the trigger signaling and a subframe that reports CSI. Number.
- processing module 92 is specifically configured to:
- the receiving module 91 After receiving the trigger signaling and passing the M subframes, the receiving module 91 reports the CSI measured by the first measurement window to the base station, and the first measurement window receives the Before the triggering signaling and one of the measurement windows closest to the subframe in which the trigger signaling is received, M is an integer greater than or equal to 0.
- the processing module 92 is specifically configured to
- the CSI measured by the first measurement window is reported to the base station by using the latest PUCCH resource; or The receiving, by the receiving module 91, the CSI, which is measured in the first measurement window, is reported to the base station by using the PUSCH resource.
- processing module 92 is specifically configured to:
- the CSI measured by the second measurement window is reported to the base station, and the second measurement window is after receiving the trigger signaling.
- M is an integer greater than or equal to 0;
- the receiving module 91 After receiving the trigger signaling and passing the M subframes, the receiving module 91 reports the CSI measured in the second measurement window to the base station, and the second measurement window receives the After the triggering signaling and one of the measurement windows closest to the subframe in which the trigger signaling is received, M is an integer greater than or equal to 0.
- the processing module 92 is specifically configured to:
- the CSI measured by the second measurement window is reported to the base station by using the latest PUCCH resource;
- the CSI measured by the second measurement window is reported to the base station by using the PUSCH resource on the Mth subframe after the end of the second measurement window;
- the receiving module 91 After the receiving module 91 receives the trigger signaling and passes through the M subframes, the CSI measured by the second measurement window is reported to the base station by using the latest PUCCH resource; or
- the CSI measured by the second measurement window is reported to the base station by using the PUSCH resource.
- the embodiment of the present invention further provides a feedback control device for channel state information. Since the principle of solving the problem is similar to the feedback control method for the channel state information, the implementation of the device can be referred to. The implementation of the method, the repetition will not be repeated.
- a feedback control device for channel state information is provided in the embodiment of the present invention. As shown in FIG. 10, the device includes:
- the sending module 101 is configured to send trigger signaling to the terminal, to instruct the terminal to report channel state information CSI obtained in a specified measurement window;
- the receiving module 102 is configured to receive the CSI measured by the terminal and measured in the measurement window.
- the length of the measurement window is pre-agreed
- the length of the measurement window is notified to the terminal by the device through high layer signaling;
- the trigger signaling includes information related to the length of the measurement window, wherein the information related to the length of the measurement window is the length of the measurement window, or is used to indicate that the length of the measurement window is An indication of the agreed fixed length or the length indicated in the higher layer signaling.
- the length of the measurement window is the number of subframes used for performing CSI measurement in the measurement window; or the length of the measurement window is the number of consecutive subframes included in the measurement window.
- the number of consecutive subframes included in the measurement window is a value less than or equal to N, where the N is between the subframe that sends the trigger signaling and the subframe that receives the CSI reported by the terminal.
- the receiving module 102 is specifically configured to:
- the sending module 101 sends the trigger signaling and passes through M subframes, the CSI measured in the first measurement window reported by the terminal is received, where the first measurement window is before the trigger signaling is sent. And M is an integer greater than or equal to 0, and the measurement window closest to the subframe in which the trigger signaling is sent.
- the receiving module 102 is specifically configured to:
- the sending module 101 After the sending module 101 sends the trigger signaling and passes through M subframes, the CSI measured by the terminal and measured in the first measurement window is received by the latest PUCCH resource;
- the CSI measured in the first measurement window reported by the terminal is received by the PUSCH resource in the Mth subframe after the sending of the triggering signaling by the sending module 101.
- the receiving module 102 is specifically configured to:
- the CSI measured by the terminal and measured in the second measurement window is received, where the second measurement window is sent after the trigger signaling
- M is an integer greater than or equal to 0;
- the sending module 101 sends the trigger signaling and passes through M subframes, the CSI measured in the second measurement window reported by the terminal is received, and the second measurement window is sent after the trigger signaling.
- M is an integer greater than or equal to 0, and the measurement window closest to the subframe in which the trigger signaling is sent.
- the receiving module 102 is specifically configured to:
- the CSI measured by the terminal and measured in the second measurement window is received by using the latest PUCCH resource;
- the sending module 101 After the sending module 101 sends the trigger signaling and passes through M subframes, the CSI measured by the terminal in the second measurement window is received by using the latest PUCCH resource; or
- the CSI measured in the second measurement window reported by the terminal is received by the PUSCH resource in the Mth subframe after the sending of the triggering signaling by the sending module 101.
- the terminal includes a receiver 111, a transmitter 112, and at least one processor 113 coupled to the receiver 111 and the transmitter 112, respectively, wherein:
- the receiver 111 is configured to: receive trigger signaling sent by the base station, where the trigger signaling is used to instruct the terminal to report channel state information CSI obtained in a specified measurement window;
- the processor 113 is configured to read the program in the memory 114, and execute the following process: triggering the transmitter 112 to report the CSI measured by the processor 113 in the measurement window to the base station.
- the bus architecture may include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 113 and various circuits of memory represented by memory 114.
- the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
- the bus interface provides an interface.
- Receiver 111 and transmitter 112 provide means for communicating with various other devices on a transmission medium.
- the user interface 115 may also be an interface capable of externally connecting the required devices, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
- the processor 113 is responsible for managing the bus architecture and general processing, and the memory 114 can store data used by the processor 113 in performing operations.
- the length of the measurement window is pre-agreed
- the length of the measurement window is notified to the terminal by the base station through high layer signaling;
- the trigger signaling includes information related to the length of the measurement window, wherein the information related to the length of the measurement window is the length of the measurement window, or is used to indicate that the length of the measurement window is An indication of the agreed fixed length or the length indicated in the higher layer signaling.
- the length of the measurement window is the number of subframes used for performing CSI measurement in the measurement window; or the length of the measurement window is the number of consecutive subframes included in the measurement window.
- the number of consecutive subframes included in the measurement window is a value less than or equal to N, and the N is a continuous subframe included between a subframe that receives the trigger signaling and a subframe that reports CSI. Number.
- the processor 113 specifically performs:
- the triggering transmitter 112 reports the CSI measured by the processor 113 in the first measurement window to the base station, where the A measurement window is one of the measurement windows before receiving the trigger signaling and closest to the subframe in which the trigger signaling is received, and M is an integer greater than or equal to 0.
- the processor 113 specifically performs:
- the triggering transmitter 112 reports the CSI measured by the processor 113 in the first measurement window by using the latest PUCCH resource. Giving the base station; or in the Mth subframe after the receiver 111 receives the trigger signaling, triggering the transmitter 112 to measure the processor 113 in the first measurement window by using a PUSCH resource The obtained CSI is reported to the base station.
- the processor 113 specifically performs:
- the triggering transmitter 112 reports the CSI measured by the processor 113 in the second measurement window to the base station, and the second measurement window is received.
- M is an integer greater than or equal to 0;
- the triggering transmitter 112 reports the CSI measured by the processor 113 in the second measurement window to the base station, where the The second measurement window is one of the measurement windows after receiving the trigger signaling and closest to the subframe in which the trigger signaling is received, and M is an integer greater than or equal to 0.
- the processor 113 specifically performs:
- the trigger transmitter 112 passes the latest PUCCH resource. a source, the CSI measured by the processor 113 in the second measurement window is reported to the base station; or
- the triggering transmitter 112 reports the CSI measured by the processor 113 in the second measurement window to the base station by using a PUSCH resource;
- the triggering transmitter 112 reports the CSI measured by the processor 113 in the second measurement window by using the latest PUCCH resource. To the base station; or
- the triggering transmitter 112 reports the CSI measured by the processor 113 in the second measurement window to the PUSCH resource.
- the base station On the Mth subframe after the receiver 111 receives the trigger signaling, the triggering transmitter 112 reports the CSI measured by the processor 113 in the second measurement window to the PUSCH resource.
- the base station On the Mth subframe after the receiver 111 receives the trigger signaling, the triggering transmitter 112 reports the CSI measured by the processor 113 in the second measurement window to the PUSCH resource.
- the base station includes a receiver 121, a transmitter 122, and at least one processor 123 coupled to the receiver 121 and the transmitter 122, respectively, wherein:
- the processor 123 is configured to read the program in the memory 124, and execute the following process: triggering the transmitter 122 to send the trigger signaling to the terminal, to instruct the terminal to report the channel state information CSI obtained in the specified measurement window;
- the receiver 121 is configured to: receive the CSI measured by the terminal and measured in the measurement window.
- the bus architecture may include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 123 and various circuits of memory represented by memory 124.
- the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
- the bus interface provides an interface. Receiver 121 and transmitter 122 provide means for communicating with various other devices on a transmission medium.
- the processor 123 is responsible for managing the bus architecture and general processing, and the memory 124 can store data used by the processor 123 when performing operations.
- the length of the measurement window is pre-agreed
- the length of the measurement window is notified to the terminal by the base station through high layer signaling;
- the trigger signaling includes information related to the length of the measurement window, wherein the information related to the length of the measurement window is the length of the measurement window, or is used to indicate that the length of the measurement window is An indication of the agreed fixed length or the length indicated in the higher layer signaling.
- the length of the measurement window is the number of subframes used for performing CSI measurement in the measurement window; or the length of the measurement window is the number of consecutive subframes included in the measurement window.
- the number of consecutive subframes included in the measurement window is a value less than or equal to N, where the N is between the subframe that sends the trigger signaling and the subframe that receives the CSI reported by the terminal.
- the receiver 121 specifically performs:
- the transmitter 122 After the transmitter 122 sends the trigger signaling and passes through the M subframes, the CSI measured in the first measurement window reported by the terminal is received, where the first measurement window is before the trigger signaling is sent. And M is an integer greater than or equal to 0, and the measurement window closest to the subframe in which the trigger signaling is sent.
- the receiver 121 specifically performs:
- the transmitter 122 After the transmitter 122 sends the trigger signaling and passes through M subframes, the CSI measured by the terminal and measured in the first measurement window is received by the latest PUCCH resource;
- the CSI measured in the first measurement window reported by the terminal is received by the PUSCH resource in the Mth subframe after the transmitter 122 sends the trigger signaling.
- the receiver 121 specifically performs:
- the CSI measured by the terminal and measured in the second measurement window is received, where the second measurement window is sent after the trigger signaling
- M is an integer greater than or equal to 0;
- the transmitter 122 After the transmitter 122 sends the trigger signaling and passes through M subframes, the CSI measured in the second measurement window reported by the terminal is received, and the second measurement window is after the trigger signaling is sent. And M is an integer greater than or equal to 0, and the measurement window closest to the subframe in which the trigger signaling is sent.
- the receiver 121 specifically performs:
- the CSI measured by the terminal and measured in the second measurement window is received by using the latest PUCCH resource;
- the transmitter 122 After the transmitter 122 sends the trigger signaling and passes through M subframes, receives the CSI measured by the terminal and measured in the second measurement window by using the latest PUCCH resource; or
- the CSI measured in the second measurement window reported by the terminal is received by the PUSCH resource in the Mth subframe after the transmitter 122 sends the trigger signaling.
- embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
- computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
- the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
- the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
- These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
- the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.
Abstract
Description
Claims (28)
- 一种信道状态信息的反馈方法,其特征在于,该方法包括:终端接收到基站发送的触发信令,所述触发信令用于指示所述终端上报在规定的测量窗口内得到的信道状态信息CSI;所述终端将自身在所述测量窗口内测量得到的CSI,上报给所述基站。
- 如权利要求1所述的方法,其特征在于,所述测量窗口的长度是预先约定的;或者所述测量窗口的长度是由所述基站通过高层信令通知给所述终端的;或者所述触发信令中包含与所述测量窗口的长度相关的信息,其中,与所述测量窗口的长度相关的信息为所述测量窗口的长度,或者用于指示所述测量窗口的长度为预先约定的固定长度或高层信令中指示的长度的指示信息。
- 如权利要求2所述的方法,其特征在于,所述测量窗口的长度为所述测量窗口内用于进行CSI测量的子帧的数目;或者所述测量窗口的长度为所述测量窗口包含的连续子帧的数目。
- 如权利要求3所述的方法,其特征在于,所述测量窗口包含的连续子帧的数目为小于或等于N的值,所述N为所述终端接收到所述触发信令的子帧与所述终端上报CSI的子帧之间所包含的连续子帧个数。
- 如权利要求1~4任一项所述的方法,其特征在于,所述终端将所述测量窗口内测量得到的CSI,上报给所述基站,包括:所述终端在接收到所述触发信令并经过M个子帧后,将第一测量窗口内测量得到的CSI,上报给所述基站,所述第一测量窗口为接收到所述触发信令之前且与接收到所述触发信令的子帧最近的一个所述测量窗口,M为大于或等于0的整数。
- 如权利要求5所述的方法,其特征在于,所述终端在接收到所述触发信令并经过M个子帧后,通过最近的物理上行控制信道PUCCH资源,将所述第一测量窗口内测量得到的CSI,上报给所述基站;或者所述终端在接收到所述触发信令后的第M个子帧上,通过物理上行共享信道PUSCH资源,将所述第一测量窗口内测量得到的CSI,上报给所述基站。
- 如权利要求1~4任一项所述的方法,其特征在于,所述终端将自身在所述测量窗口内测量得到的CSI,上报给所述基站,包括:所述终端在第二测量窗口结束并经过M个子帧后,将自身在所述第二测量窗口内测量得到的CSI,上报给所述基站,所述第二测量窗口为接收到所述触发信令后且与接收到所述触发信令的子帧最近的一个所述测量窗口,M为大于或等于0的整数;或者所述终端在接收到所述触发信令并经过M个子帧后,将自身在第二测量窗口内测量得到的CSI,上报给所述基站,所述第二测量窗口为接收到所述触发信令后且与接收到所述触发信令的子帧最近的一个所述测量窗口,M为大于或等于0的整数。
- 如权利要求7所述的方法,其特征在于,所述终端在所述第二测量窗口结束并经过M个子帧后,通过最近的PUCCH资源,将自身在所述第二测量窗口内测量得到的CSI,上报给所述基站;或者所述终端在所述第二测量窗口结束后的第M个子帧上,通过PUSCH资源,将自身在所述第二测量窗口内测量得到的CSI,上报给所述基站;或者所述终端在接收到所述触发信令并经过M个子帧后,通过最近的PUCCH资源,将自身在所述第二测量窗口内测量得到的CSI,上报给所述基站;或者所述终端在接收到所述触发信令后的第M个子帧上,通过PUSCH资源,将自身在所述第二测量窗口内测量得到的CSI,上报给所述基站。
- 如权利要求1所述的方法,其特征在于,所述触发信令中包含用于指示终端进行CSI测量对应的下行参考信号的配置信息,或者进行CSI测量对应的下行参考信号的配置信息的集合的指示信息。
- 一种信道状态信息的反馈控制方法,其特征在于,该方法包括:基站向终端发送触发信令,以指示所述终端上报在规定的测量窗口内得到的信道状态信息CSI;所述基站接收所述终端上报的在所述测量窗口内测量得到的CSI。
- 如权利要求10所述的方法,其特征在于,所述测量窗口的长度是预先约定的;或者所述测量窗口的长度是由所述基站通过高层信令通知给所述终端的;或者所述触发信令中包含与所述测量窗口的长度相关的信息,其中,与所述测量窗口的长度相关的信息为所述测量窗口的长度,或者用于指示所述测量窗口的长度为预先约定的固定长度或高层信令中指示的长度的指示信息。
- 如权利要求11所述的方法,其特征在于,所述测量窗口的长度为所述测量窗口内用于进行CSI测量的子帧的数目;或者所述测量窗口的长度为所述测量窗口包含的连续子帧的数目。
- 如权利要求12所述的方法,其特征在于,所述测量窗口包含的连续子帧的数目为小于或等于N的值,所述N为所述基站发送所述触发信令的子帧与所述基站接收到所述终端上报的CSI的子帧之间所包含的连续子帧个数。
- 如权利要求10~13任一项所述的方法,其特征在于,所述基站接收所述终端上报的在所述测量窗口内测量得到的CSI,包括:所述基站在发送所述触发信令并经过M个子帧后,接收所述终端上报的在第一测量窗口内测量得到的CSI,所述第一测量窗口为发送所述触发信令之前且与发送所述触发信令的子帧最近的一个所述测量窗口,M为大于或等于0的整数。
- 如权利要求14所述的方法,其特征在于,所述基站在发送所述触发信令并经过M个子帧后,通过最近的PUCCH资源,接收所述终端上报的在所述第一测量窗口内测量得到的CSI;或者所述基站在发送所述触发信令后的第M个子帧上,通过PUSCH资源,接收所述终端上报的在所述第一测量窗口内测量得到的CSI。
- 如权利要求10~13任一项所述的方法,其特征在于,所述基站接收所述终端上报的在所述测量窗口内测量得到的CSI,包括:所述基站在第二测量窗口结束并经过M个子帧后,接收所述终端上报的在所述第二测量窗口内测量得到的CSI,所述第二测量窗口为发送所述触发信令后且与发送所述触发信令的子帧最近的一个所述测量窗口,M为大于或等于0的整数;或者所述基站在发送所述触发信令并经过M个子帧后,接收所述终端上报的在第二测量窗口内测量得到的CSI,所述第二测量窗口为发送所述触发信令后且与发送所述触发信令的子帧最近的一个所述测量窗口,M为大于或等于0的整数。
- 如权利要求16所述的方法,其特征在于,所述基站在所述第二测量窗口结束并经过M个子帧后,通过最近的PUCCH资源,接收所述终端上报的在所述第二测量窗口内测量得到的CSI;或者所述基站在所述第二测量窗口结束后的第M个子帧上,通过PUSCH资源,接收所述终端上报的在所述第二测量窗口内测量得到的CSI;或者所述基站在发送所述触发信令并经过M个子帧后,通过最近的PUCCH资源,接收所述终端上报的在所述第二测量窗口内测量得到的CSI;或者所述基站在发送所述触发信令后的第M个子帧上,通过PUSCH资源,将接收所述终端上报的在所述第二测量窗口内测量得到的CSI。
- 如权利要求10所述的方法,其特征在于,所述触发信令中包含用于指示终端进行CSI测量对应的下行参考信号的配置信息,或者进行CSI测量对应的下行参考信号的配置信息的集合的指示信息。
- 一种信道状态信息的反馈设备,其特征在于,所述设备包括:接收模块,用于接收到基站发送的触发信令,所述触发信令用于指示所述设备上报在规定的测量窗口内得到的信道状态信息CSI;处理模块,用于将自身在所述测量窗口内测量得到的CSI,上报给所述基站。
- 如权利要求19所述的设备,其特征在于,所述处理模块具体用于:在所述接收模块接收到所述触发信令并经过M个子帧后,将自身在第一测量窗口内测量得到的CSI,上报给所述基站,所述第一测量窗口为接收到所述触发信令之前且与接收到所述触发信令的子帧最近的一个所述测量窗口,M为大于或等于0的整数。
- 如权利要求20所述的设备,其特征在于,所述处理模块具体用于在所述接收模块接收到所述触发信令并经过M个子帧后,通过最近的PUCCH资源,将自身在所述第一测量窗口内测量得到的CSI,上报给所述基站;或者在所述接收模块接收到所述触发信令后的第M个子帧上,通过PUSCH资源,将自身在所述第一测量窗口内测量得到的CSI,上报给所述基站。
- 如权利要求19所述的设备,其特征在于,所述处理模块具体用于:在第二测量窗口结束并经过M个子帧后,将自身在所述第二测量窗口内测量得到的CSI,上报给所述基站,所述第二测量窗口为接收到所述触发信令后且与接收到所述触发信令的子帧最近的一个所述测量窗口,M为大于或等于0的整数;或者在所述接收模块接收到所述触发信令并经过M个子帧后,将自身在第二测量窗口内测量得到的CSI,上报给所述基站,所述第二测量窗口为接收到所述触发信令后且与接收到所述触发信令的子帧最近的一个所述测量窗口,M为大于或等于0的整数。
- 如权利要求22所述的设备,其特征在于,所述处理模块具体用于:在所述第二测量窗口结束并经过M个子帧后,通过最近的PUCCH资源,将自身在所述第二测量窗口内测量得到的CSI,上报给所述基站;或者在所述第二测量窗口结束后的第M个子帧上,通过PUSCH资源,将自身在所述第二测量窗口内测量得到的CSI,上报给所述基站;或者在所述接收模块接收到所述触发信令并经过M个子帧后,通过最近的PUCCH资源,将自身在所述第二测量窗口内测量得到的CSI,上报给所述基站;或者在所述接收模块接收到所述触发信令后的第M个子帧上,通过PUSCH资源,将自身在所述第二测量窗口内测量得到的CSI,上报给所述基站。
- 一种信道状态信息的反馈控制设备,其特征在于,所述设备包括:发送模块,用于向终端发送触发信令,以指示所述终端上报在规定的测量窗口内得到的信道状态信息CSI;接收模块,用于接收所述终端上报的在所述测量窗口内测量得到的CSI。
- 如权利要求24所述的设备,其特征在于,所述接收模块具体用于:在所述发送模块发送所述触发信令并经过M个子帧后,接收所述终端上报的在第一测量窗口内测量得到的CSI,所述第一测量窗口为发送所述触发信令之前且与发送所述触发 信令的子帧最近的一个所述测量窗口,M为大于或等于0的整数。
- 如权利要求25所述的设备,其特征在于,所述接收模块具体用于:在所述发送模块发送所述触发信令并经过M个子帧后,通过最近的PUCCH资源,接收所述终端上报的在所述第一测量窗口内测量得到的CSI;或者在所述发送模块发送所述触发信令后的第M个子帧上,通过PUSCH资源,接收所述终端上报的在所述第一测量窗口内测量得到的CSI。
- 如权利要求24所述的设备,其特征在于,所述接收模块具体用于:在第二测量窗口结束并经过M个子帧后,接收所述终端上报的在所述第二测量窗口内测量得到的CSI,所述第二测量窗口为发送所述触发信令后且与发送所述触发信令的子帧最近的一个所述测量窗口,M为大于或等于0的整数;或者在所述发送模块发送所述触发信令并经过M个子帧后,接收所述终端上报的在第二测量窗口内测量得到的CSI,所述第二测量窗口为发送所述触发信令后且与发送所述触发信令的子帧最近的一个所述测量窗口,M为大于或等于0的整数。
- 如权利要求27所述的设备,其特征在于,所述接收模块具体用于:在所述第二测量窗口结束并经过M个子帧后,通过最近的PUCCH资源,接收所述终端上报的在所述第二测量窗口内测量得到的CSI;或者在所述第二测量窗口结束后的第M个子帧上,通过PUSCH资源,接收所述终端上报的在所述第二测量窗口内测量得到的CSI;或者在所述发送模块发送所述触发信令并经过M个子帧后,通过最近的PUCCH资源,接收所述终端上报的在所述第二测量窗口内测量得到的CSI;或者在所述发送模块发送所述触发信令后的第M个子帧上,通过PUSCH资源,将接收所述终端上报的在所述第二测量窗口内测量得到的CSI。
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JP2018522488A (ja) | 2018-08-09 |
KR20180030157A (ko) | 2018-03-21 |
EP3327942A4 (en) | 2018-08-29 |
CN106656280A (zh) | 2017-05-10 |
US20180205439A1 (en) | 2018-07-19 |
US10461832B2 (en) | 2019-10-29 |
EP3327942A1 (en) | 2018-05-30 |
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