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 PDF

Info

Publication number
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
Authority
WO
WIPO (PCT)
Prior art keywords
measurement window
csi
terminal
base station
measured
Prior art date
Application number
PCT/CN2016/090522
Other languages
English (en)
French (fr)
Inventor
陈文洪
高秋彬
李辉
拉盖施
陈润华
Original Assignee
电信科学技术研究院
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 电信科学技术研究院 filed Critical 电信科学技术研究院
Priority to KR1020187004456A priority Critical patent/KR20180030157A/ko
Priority to US15/745,122 priority patent/US10461832B2/en
Priority to JP2018503158A priority patent/JP2018522488A/ja
Priority to EP16827226.8A priority patent/EP3327942A4/en
Publication of WO2017012535A1 publication Critical patent/WO2017012535A1/zh

Links

Images

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613Diversity 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
    • H04B7/0615Diversity 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
    • H04B7/0619Diversity 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
    • H04B7/0636Feedback format
    • H04B7/0643Feedback on request
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413MIMO systems
    • H04B7/0417Feedback systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B17/00Monitoring; Testing
    • H04B17/20Monitoring; Testing of receivers
    • H04B17/24Monitoring; Testing of receivers with feedback of measurements to the transmitter
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613Diversity 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
    • H04B7/0615Diversity 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
    • H04B7/0619Diversity 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
    • H04B7/0621Feedback content
    • H04B7/0626Channel coefficients, e.g. channel state information [CSI]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/10Scheduling measurement reports ; Arrangements for measurement reports
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation
    • H04W72/044Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446Resources in time domain, e.g. slots or frames
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/21Control 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

公开了一种信道状态信息的反馈及其控制方法和设备,方法包括:终端接收到基站发送的触发信令,该触发信令用于指示终端上报在规定的测量窗口内得到的CSI;终端将自身在规定的测量窗口内测量得到的CSI,上报给基站。由于终端只上报该终端在规定的测量窗口内测量得到的CSI,从而降低了终端进行CSI反馈的频率,也降低了CSI反馈开销。

Description

一种信道状态信息的反馈及其控制方法和设备
本申请要求在2015年7月20日提交中国专利局、申请号为201510429049.3、发明名称为“一种信道状态信息的反馈及其控制方法和设备”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
技术领域
本发明涉及通信技术领域,特别涉及一种信道状态信息的反馈及其控制方法和设备。
背景技术
在现有蜂窝系统中,基站天线阵列一般呈水平排列,如图1A和图1B所示。基站发射端波束仅能在水平方向进行调整。随着天线技术的发展,业界已出现能够对每个天线阵子独立控制的有源天线,如图2A和图2B所示。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。
在这种三维天线阵列下,基站发送的信号不仅可以在水平方向上对用户设备(User Equipment,UE)进行赋形,还可以在垂直方向上对UE进行赋形。为了获得两个维度赋形后的信道状态信息,基站通常对信道状态信息参考信号(Channel State Information Reference Signals,CSI-RS)进行垂直维的赋形(如图3所示),使UE基于垂直赋形后的CSI-RS反馈信道状态信息(CSI)。从而,基站可以根据CSI-RS所用的垂直维度的赋形向量和UE反馈的CSI,对数据进行垂直和水平两个维度的预编码,并进行链路自适应。
在全维多输入多输出(Full Dimension Multiple Input Multiple Output,FD MIMO)系统中,一个小区可能配置多个CSI-RS资源,不同资源采用不同的垂直维度的赋形向量。由于目前CSI-RS传输是周期性的,UE需要在每个周期都进行CSIRS的测量,对于周期性CSI反馈,UE需要周期性进行CSI上报,反馈频率高,反馈开销大,从而影响频谱效率。
发明内容
本发明实施例提供了一种信道状态信息的反馈及其控制方法和设备,解决了反馈频率高,反馈开销大,从而影响频谱效率的问题。
本发明实施例提供的一种信道状态信息的反馈方法,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。
优选的,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。
优选的,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。
优选的,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。
基于上述任一实施例,作为一种优选的实现方式,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。
优选的,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。
作为另一种优选的实现方式,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。
优选的,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。
基于上述任一实施例,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。
本发明实施例提供的一种信道状态信息的反馈控制方法,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。
优选的,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。
优选的,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。
优选的,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。
基于上述任一实施例,作为一种优选的实现方式,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。
优选的,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。
作为另一种优选的实现方式,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。
优选的,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。
基于上述任一实施例,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。
本发明实施例提供的一种信道状态信息的反馈设备,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。
优选的,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设备的;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。
优选的,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。
优选的,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为接收到所述触发信令的子帧与上报CSI的子帧之间所包含的连续子帧个数。
基于上述任一实施例,作为一种优选的实现方式,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。
优选的,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。
作为另一种优选的实现方式,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。
优选的,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。
本发明实施例提供的一种信道状态信息的反馈控制设备,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。
优选的,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设备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。
优选的,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。
优选的,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为发送所述触发信令的子帧与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。
基于上述任一实施例,作为一种优选的实现方式,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。
优选的,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。
作为另一种优选的实现方式,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。
优选的,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。
本发明实施例提供的一种终端,包括接收机、发送机以及分别与该接收机和发送机连接的至少一个处理器,其中:
接收机用于执行: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;
处理器用于读取存储器中的程序,执行下列过程:触发所述发送机将所述处理器在所述测量窗口内测量得到的CSI,上报给所述基站。
优选的,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。
优选的,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。
优选的,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为接收到所述触发信令的子帧与上报CSI的子帧之间所包含的连续子帧个数。
基于上述任一实施例,作为一种优选的实现方式,所述处理器具体执行:
在所述接收机接收到所述触发信令并经过M个子帧后,触发发送机将所述处理器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。
优选的,所述处理器具体执行:
在所述接收机接收到所述触发信令并经过M个子帧后,触发发送机通过最近的PUCCH资源,将所述处理器在所述第一测量窗口内测量得到的CSI,上报给所述基站;或者在所述接收机接收到所述触发信令后的第M个子帧上,触发发送机通过PUSCH资源,将所述处理器在所述第一测量窗口内测量得到的CSI,上报给所述基站。
作为另一种优选的实现方式,所述处理器具体执行:
在第二测量窗口结束并经过M个子帧后,触发发送机将所述处理器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
在所述接收机接收到所述触发信令并经过M个子帧后,触发发送机将所述处理器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。
优选的,所述处理器具体执行:
在所述第二测量窗口结束并经过M个子帧后,触发发送机通过最近的PUCCH资源,将所述处理器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,触发发送机通过PUSCH资源,将所述处理器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
在所述接收机接收到所述触发信令并经过M个子帧后,触发发送机通过最近的PUCCH资源,将所述处理器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
在所述接收机接收到所述触发信令后的第M个子帧上,触发发送机通过PUSCH资源, 将所述处理器在所述第二测量窗口内测量得到的CSI,上报给所述基站。
本发明实施例提供的一种基站,包括接收机、发送机、以及与该接收机和该发送机分别连接的至少一个处理器,其中:
处理器,用于读取存储器中的程序,执行下列过程:触发发送机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;
接收机用于执行:接收所述终端上报的在所述测量窗口内测量得到的CSI。
优选的,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。
优选的,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。
优选的,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为发送所述触发信令的子帧与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。
基于上述任一实施例,作为一种优选的实现方式,所述接收机具体执行:
在所述发送机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。
优选的,所述接收机具体执行:
在所述发送机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
在所述发送机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。
作为另一种优选的实现方式,所述接收机具体执行:
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
在所述发送机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。
优选的,所述接收机具体执行:
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
在所述发送机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
在所述发送机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。
本发明实施例提供的一种信道状态信息的反馈设备,包括接收机、发送机以及分别与该接收机和发送机连接的至少一个处理器,其中:
接收机用于执行: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;
处理器用于读取存储器中的程序,执行下列过程:触发所述发送机将所述处理器在所述测量窗口内测量得到的CSI,上报给所述基站。
本发明实施例中,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。
可选的,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。
优选的,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为接收到所述触发信令的子帧与上报CSI的子帧之间所包含的连续子帧个数。
可选的,所述处理器具体执行:
在所述接收机接收到所述触发信令并经过M个子帧后,触发发送机将所述处理器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。
可选的,所述处理器具体执行:
在所述接收机接收到所述触发信令并经过M个子帧后,触发发送机通过最近的PUCCH资源,将所述处理器在所述第一测量窗口内测量得到的CSI,上报给所述基站;或者在所述接收机接收到所述触发信令后的第M个子帧上,触发发送机通过PUSCH资源,将所述处理器在所述第一测量窗口内测量得到的CSI,上报给所述基站。
所述处理器具体执行:
在第二测量窗口结束并经过M个子帧后,触发发送机将所述处理器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
在所述接收机接收到所述触发信令并经过M个子帧后,触发发送机将所述处理器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。
所述处理器具体执行:
在所述第二测量窗口结束并经过M个子帧后,触发发送机通过最近的PUCCH资源,将所述处理器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,触发发送机通过PUSCH资源,将所述处理器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
在所述接收机接收到所述触发信令并经过M个子帧后,触发发送机通过最近的PUCCH资源,将所述处理器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
在所述接收机接收到所述触发信令后的第M个子帧上,触发发送机通过PUSCH资源,将所述处理器在所述第二测量窗口内测量得到的CSI,上报给所述基站。
本发明实施例提供的一种信道状态信息的反馈控制设备,包括接收机、发送机、以及与该接收机和该发送机分别连接的至少一个处理器,其中:
处理器,用于读取存储器中的程序,执行下列过程:触发发送机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;
接收机用于执行:接收所述终端上报的在所述测量窗口内测量得到的CSI。
本发明实施例中,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。
进一步,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。
优选的,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为发送所述触发信令的子帧与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。
可选的,所述接收机具体执行:
在所述发送机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。
可选的,所述接收机具体执行:
在所述发送机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
在所述发送机122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。
可选的,所述接收机具体执行:
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
在所述发送机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。
可选的,所述接收机具体执行:
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
在所述发送机122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
在所述发送机122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。
本发明实施例提供了一种基于非周期CSI-RS传输的信道状态信息反馈方案,终端在接收到基站发送的触发信令后,将该终端在规定的测量窗口内测量得到的CSI,上报给基站。由于终端只上报该终端在规定的测量窗口内测量得到的CSI,从而降低了终端进行CSI反馈的频率,也降低了CSI反馈开销。
附图说明
图1A为第一种基站天线阵列的结构示意图;
图1B为第二种基站天线阵列的结构示意图;
图2A为第三种基站天线阵列的结构示意图;
图2B为第四种基站天线阵列的结构示意图;
图3为一种CSI-RS发送方法的示意图;
图4为本发明提供的一种信道状态信息的反馈方法的示意图;
图5为本发明提供的一种基站和终端处理的时序图;
图6为本发明提供的一种信道状态信息的反馈控制方法的示意图;
图7为本发明提供的实施例一中基站和终端处理的时序图;
图8为本发明提供的实施例二中基站和终端处理的时序图;
图9为本发明提供的一种信道状态信息的反馈设备的示意图;
图10为本发明提供的一种信道状态信息的反馈控制设备的示意图;
图11为本发明提供的一种终端的示意图;
图12为本发明提供的一种基站的示意图。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚,下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
应理解,本发明的技术方案可以应用于各种通信系统,例如:全球移动通讯(Global System of Mobile communication,GSM)系统、码分多址(Code Division Multiple Access,CDMA)系统、宽带码分多址(Wideband Code Division Multiple Access,WCDMA)系统、通用分组无线业务(General Packet Radio Service,GPRS)、长期演进(Long Term Evolution,LTE)系统、先进的长期演进(Advanced long term evolution,LTE-A)系统、通用移动通信系统(Universal Mobile Telecommunication System,UMTS)等。
还应理解,在本发明实施例中,用户设备(User Equipment,UE)包括但不限于移动台(Mobile Station,MS)、移动终端(Mobile Terminal)、移动电话(Mobile Telephone)、手机(handset)及便携设备(portable equipment)等,该用户设备可以经无线接入网(Radio Access Network,RAN)与一个或多个核心网进行通信,例如,用户设备可以是移动电话(或称为“蜂窝”电话)、具有无线通信功能的计算机等,用户设备还可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置。
在本发明实施例中,基站(例如,接入点)可以是指接入网中在空中接口上通过一个或多个扇区与无线终端通信的设备。基站可用于将收到的空中帧与IP分组进行相互转换,作为无线终端与接入网的其余部分之间的路由器,其中接入网的其余部分可包括网际协议 (IP)网络。基站还可协调对空中接口的属性管理。例如,基站可以是GSM或CDMA中的基站(Base Transceiver Station,BTS),也可以是WCDMA中的基站(NodeB),还可以是LTE中的演进型基站(NodeB或eNB或e-NodeB,evolutional Node B),本发明并不限定。
下面结合说明书附图对本发明实施例作进一步详细描述。应当理解,此处所描述的实施例仅用于说明和解释本发明,并不用于限定本发明。
本发明实施例提供了一种信道状态信息的反馈方法,如图4所示,该方法包括:
S41、终端接收到基站发送的触发信令,该触发信令用于指示终端上报在规定的测量窗口内得到的CSI;
S42、终端将自身在规定的测量窗口内测量得到的CSI,上报给基站。
本发明实施例提供了一种信道状态信息反馈方案,终端在接收到基站发送的触发信令后,将该终端在规定的测量窗口内测量得到的CSI,上报给基站。由于终端只上报该终端在规定的测量窗口内测量得到的CSI,从而降低了终端进行CSI反馈的频率,也降低了CSI反馈开销。
本发明实施例中,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。
其中,下行参考信号的配置信息包括:CSI-RS资源配置、小区专属参考信号(Cell-specific Reference Signals,CRS)资源配置、或者干扰测量资源配置等。
需要说明的是,基站和终端预先知道所有下行参考信号的配置信息,由基站通过触发信令指示终端进行CSI测量所对应的下行参考信号的配置信息,例如,指示信息采用2比特信息进行指示,00表示CSI-RS资源配置1,01表示CSI-RS资源配置2,10表示CSI-RS资源配置3等。
基站和终端预先知道所有下行参考信号的配置信息的集合,由基站通过触发信令指示终端进行CSI测量所对应的下行参考信号的配置信息集合,例如,指示信息采用2比特信息进行指示,00表示CSI-RS资源配置1和CSI-RS资源配置2的集合,01表示CSI-RS资源配置1和CSI-RS资源配置3的集合,10表示CSI-RS资源配置1、CSI-RS资源配置2、CSI-RS资源配置3的集合等。
本发明实施例中,规定的测量窗口的长度包括以下三种优选的实现方式:
方式1、规定的测量窗口的长度是预先约定的。
具体的,预先约定的方式可以是任何能够保证基站侧和终端侧对测量窗口的长度的认知保持一致的方式,比如通过规范或协议预定、厂商之间进行约定等方式。
方式2、规定的测量窗口的长度是由基站通过高层信令通知给终端的。
具体的,基站规定测量窗口的长度,并通过高层信令,如无线资源控制(Radio Resource  Control,RRC)或者媒体接入控制(Media Access Control,MAC)信令,将所规定的测量窗口的长度通知给终端。
方式3、触发信令中包含与规定的测量窗口的长度相关的信息,其中,与规定的测量窗口的长度相关的信息为规定的测量窗口的长度的具体值,或者用于指示规定的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。
具体的,基站通过触发信令通知终端规定的测量窗口的长度,该触发信令中可以直接携带规定的测量窗口的长度,也可以携带用于指示规定的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。终端在接收到该指示信息后,就可以知道规定的测量窗口的长度是预先约定的固定长度,还是基站通过高层信令通知给该终端的长度了。举例说明,指示信息采用1比特信息,其中,0表示规定的测量窗口的长度为预先约定的固定长度,1表示规定的测量窗口的长度为高层信令中指示的长度。
基于上述任一实现方式,规定的测量窗口的长度为该测量窗口内用于进行CSI测量的子帧的数目;或者规定的测量窗口的长度为该测量窗口包含的连续子帧的数目。
具体的,规定的测量窗口的长度可以通过该测量窗口内所包含的用于进行CSI测量的子帧的数目k来定义,进行CSI测量的子帧(如CSI-RS传输子帧),举例说明,如果规定测量窗口内用于进行CSI测量的子帧数目为k,则表示该测量窗口内应该包含k个用于进行CSI测量的子帧,而对于该测量窗口内实际包含的连续子帧数目是没有限制的。
优选的,规定的测量窗口包含的连续子帧的数目为小于或等于N的值,N为终端接收到触发信令的子帧与该终端上报CSI的子帧之间所包含的连续子帧个数。
基于上述任一实施例,S42中,终端将规定的测量窗口内测量得到的CSI,上报给基站,包括以下三种实现方式:
方式一、终端在接收到触发信令并经过M个子帧后,将第一测量窗口内测量得到的CSI,上报给基站,该第一测量窗口为接收到触发信令之前且与接收到触发信令的子帧最近的一个规定的测量窗口,M为大于或等于0的整数。
其中,M的值为预先约定,或由基站确定并通过高层信令通知给终端,或者由基站确定并通过触发信令通知给终端。例如,对于FDD(Frequency Division Duplex,频分双工),M=4。
该方式下,终端可以一直对接收到的用于进行CSI的参考信号进行测量,但不进行上报,直至接收到触发信令后,该终端将与接收到触发信令的子帧最近的一个规定的测量窗口(即第一测量窗口)内测量得到的CSI上报给基站,而在其他窗口测量得到的CSI不需要上报。
举例说明第一测量窗口的确定,如图5所示,基站周期性发送CSI-RS信号,且在不同的周期内CSI-RS信号所采用的垂直赋形向量可以不同,假设CSI-RS的周期为4。例如, 在子帧n-8中发送的CSI-RS采用UE1的垂直赋形向量,在子帧n-4和n中的CSI-RS采用UE2的垂直赋形向量。基站在子帧n+1向UE2发送触发信令。若规定的测量窗口的长度为2个用于进行CSI测量的子帧,则对于UE2来说第一测量窗口为从子帧n-4至子帧n;若规定的测量窗口的长度为6个子帧,则对于UE2来说第一测量窗口为从子帧n-5至子帧n。
优选的,对于周期性CSI反馈,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(Physical Uplink Control Channel,PUCCH)资源,将第一测量窗口内测量得到的CSI,上报给基站。
优选的,对于非周期性CSI反馈,终端在接收到触发信令后的第M个子帧上,通过物理上行控制信道(Physical Uplink Shared Channel,PUSCH)资源,将第一测量窗口内测量得到的CSI,上报给基站。
方式二、终端在第二测量窗口结束并经过M个子帧后,将自身在第二测量窗口内测量得到的CSI,上报给基站,该第二测量窗口为接收到触发信令后且与接收到触发信令的子帧最近的一个规定的测量窗口,M为大于或等于0的整数。
具体的,终端在接收到触发信令之前不进行CSI测量,在接收到触发信令且与接收到触发信令的子帧最近的一个规定的测量窗口(即第二测量窗口)开始进行CSI测量,并将得到的CSI上报给基站。
举例说明第一测量窗口的确定,仍以图5所示为例,基站周期性发送CSI-RS信号,且在不同的周期内CSI-RS信号所采用的垂直赋形向量可以不同,假设CSI-RS的周期为4。例如,在子帧n-8中发送的CSI-RS采用UE1的垂直赋形向量,在子帧n-4和n中的CSI-RS采用UE2的垂直赋形向量。基站在子帧n-6向UE2发送触发信令。若规定的测量窗口的长度为2个用于进行CSI测量的子帧,则对于UE2来说第二测量窗口为从子帧n-4至子帧n;若规定的测量窗口的长度为6个子帧,则对于UE2来说第二测量窗口为从子帧n-5至子帧n。
优选的,对于周期性CSI反馈,终端在第二测量窗口结束并经过M个子帧后,通过最近的PUCCH资源,将自身在第二测量窗口内测量得到的CSI,上报给基站。
优选的,对于非周期性CSI反馈,终端在第二测量窗口结束并经过M个子帧后,通过PUSCH资源,将自身在第二测量窗口内测量得到的CSI,上报给基站。
方式三、终端在接收到触发信令并经过M个子帧后,将自身在第二测量窗口内测量得到的CSI,上报给基站,第二测量窗口为接收到触发信令后且与接收到所述触发信令的子帧最近的一个规定的测量窗口,M为大于或等于0的整数。
优选的,对于周期性CSI反馈,终端在接收到触发信令并经过M个子帧后,通过最近的PUCCH资源,将自身在第二测量窗口内测量得到的CSI,上报给基站。
优选的,对于非周期性CSI反馈,终端在接收到触发信令并经过M个子帧后,通过PUSCH资源,将自身在第二测量窗口内测量得到的CSI,上报给基站。
上述方式二和方式三中,由于终端只需要在规定的测量窗口内进行测量,并反馈测量得到的CSI,从而还可以降低终端的测量复杂度。
需要说明的是,FD MIMO系统中,一个小区可能配置多个CSI-RS资源,不同资源采用不同的垂直维度的赋形向量,如果一个小区中采用的垂直波束较多,则每个波束都需要一个对应的CSI-RS资源,导致小区中的CSI-RS占用大量的物理资源,影响频谱效率。为了降低CSI-RS资源开销,实现一个CSI-RS资源由多个终端共有,基站可以在不同的时刻使用不同的赋形向量对该CSI-RS资源进行赋形,分别用于不同终端的CSI测量和反馈。由于现有UE都是自行决定进行CSI测量的测量窗口的长度,那么UE在进行测量的时候,很可能会测量到针对其他UE进行赋形的CSI-RS,从而使得测量结果不准确。因此,需要基站指示每个终端在该终端专属的赋形向量对应的CSI-RS的发送时刻进行CSI测量。在其他时刻,虽然基站仍然会发送CSI-RS,但所发送的CSI-RS对于该终端是没有意义的。本发明实施例提供的信道状态信息的反馈方案可应用于上述CSI-RS传输,具体的:针对共用同一个CSI-RS的终端来说,每个终端对应的规定的测量窗口内的导频信号是基站对该CSI-RS资源使用该终端专属的赋形向量进行赋形得到的,从而能有效提高CSI-RS的效率,降低CSI-RS资源开销,特别在系统中调度用户较少的场景。
基于同一发明构思,本发明实施例提供了一种信道状态信息的反馈控制方法,如图6所示,该方法包括:
S61、基站向终端发送触发信令,以指示终端上报在规定的测量窗口内得到的CSI;
S62、基站接收终端上报的在规定的测量窗口内测量得到的CSI。
本发明实施例提供了一种基于非周期CSI-RS传输的信道状态信息反馈控制方案,基站向终端发送触发信令,以指示终端上报在规定的测量窗口内得到的CSI;基站接收终端上报的在规定的测量窗口内测量得到的CSI。由于终端只上报该终端在规定的测量窗口内测量得到的CSI,从而降低了终端进行CSI反馈的频率,也降低了CSI反馈开销。
本发明实施例中,规定的测量窗口的长度是预先约定的;或者
规定的测量窗口的长度是由基站通过高层信令通知给终端的;或者
触发信令中包含与规定的测量窗口的长度相关的信息,其中,与规定的测量窗口的长度相关的信息为规定的测量窗口的长度,或者用于指示规定的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。
进一步,规定的测量窗口的长度为规定的测量窗口内用于进行CSI测量的子帧的数目;或者规定的测量窗口的长度为规定的测量窗口包含的连续子帧的数目。
优选的,规定的测量窗口包含的连续子帧的数目为小于或等于N的值,N为基站发 送触发信令的子帧与基站接收到终端上报的CSI的子帧之间所包含的连续子帧个数。
基于上述任一实施例,作为第一种优选的实现方式,S62中,基站接收终端上报的在规定的测量窗口内测量得到的CSI,包括:
基站在发送触发信令并经过M个子帧后,接收终端上报的在第一测量窗口内测量得到的CSI,第一测量窗口为发送触发信令之前且与发送触发信令的子帧最近的一个规定的测量窗口,M为大于或等于0的整数。
优选的,对于周期性CSI反馈,基站在发送触发信令并经过M个子帧后,通过最近的PUCCH资源,接收终端上报的在第一测量窗口内测量得到的CSI。
优选的,对于非周期性CSI反馈,基站在发送触发信令后的第M个子帧上,通过PUSCH资源,接收终端上报的在第一测量窗口内测量得到的CSI。
作为第二种优选的实现方式,S62中,基站接收终端上报的在规定的测量窗口内测量得到的CSI,包括:
基站在第二测量窗口结束并经过M个子帧后,接收终端上报的在第二测量窗口内测量得到的CSI,第二测量窗口为发送触发信令后且与发送触发信令的子帧最近的一个规定的测量窗口,M为大于或等于0的整数。
优选的,对于周期性CSI反馈,基站在第二测量窗口结束并经过M个子帧后,通过最近的PUCCH资源,接收终端上报的在第二测量窗口内测量得到的CSI。
优选的,对于非周期性CSI反馈,基站在第二测量窗口结束后的第M个子帧上,通过PUSCH资源,接收终端上报的在第二测量窗口内测量得到的CSI。
作为第三种优选的实现方式,S62中,基站接收终端上报的在规定的测量窗口内测量得到的CSI,包括:
基站在发送触发信令并经过M个子帧后,接收终端上报的在第二测量窗口内测量得到的CSI,第二测量窗口为发送触发信令后且与发送触发信令的子帧最近的一个规定的测量窗口,M为大于或等于0的整数。
优选的,对于周期性CSI反馈,基站在发送触发信令并经过M个子帧后,通过最近的PUCCH资源,接收终端上报的在第二测量窗口内测量得到的CSI。
优选的,对于非周期性CSI反馈,基站在发送触发信令后第M个子帧上,通过PUSCH资源,将接收终端上报的在第二测量窗口内测量得到的CSI。
基于上述任一实施例,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集合的配置信息的指示信息。
本发明实施例提供的信道状态信息的反馈控制方案可以应用于非周期CSI-RS传输,具体的:针对共用同一个CSI-RS的终端来说,每个终端对应的规定的测量窗口内的导频信号可以是基站对该CSI-RS资源使用该终端专属的赋形向量进行赋形得到的,从而能有 效提高CSI-RS的效率,降低CSI-RS资源开销,特别在系统中调度用户较少的场景。
下面结合以下两个具体实施例,从终端与基站的交互角度来说明本发明提供的方案。
实施例1:
1)基站周期性发送CSI-RS信号,且在不同的周期内CSI-RS信号所采用的赋形向量可以不同,假设CSI-RS的周期为T。例如,在子帧n-2T中发送的CSI-RS采用UE1的赋形向量,在子帧n-T和n中的CSI-RS采用UE2的赋形向量,其时序图如图7所示。
2)UE2在每个CSI-RS周期内都基于CSI-RS进行CSI测量,且与基站预先约定CSI测量窗口为k=2个用于进行CSI测量的子帧(也可以称为CSI测量子帧)。所以,虽然UE在每个CSI-RS周期内都进行测量,但只储存最近的两个CSI-RS子帧上测量得到的CSI。
3)基站在子帧n+2中通过下行控制信息(Downlink Control Information,DCI)触发UE2进行CSI反馈。
4)UE2接收到触发信令后,在n+6子帧(即延迟M=4个子帧)上的PUSCH中进行非周期CSI上报,所上报的CSI为子帧n+2之前最近的两个CSI测量子帧上测量得到的CSI,即子帧n-T和n上测量得到的CSI。所以,UE上报的CSI都是基于自己的赋形向量赋形的CSI-RS测量得到的。
实施例2:
1)基站周期性发送CSI-RS信号,且在不同的周期内CSI-RS信号所采用的赋形向量可以不同,假设CSI-RS的周期为T=5。例如,在子帧n-10中发送的CSI-RS采用UE1的赋形向量,在子帧n-5和n中的CSI-RS采用UE2的赋形向量,其时序图如图8所示。
2)UE2在接收到触发信令之前,通过高层信令获知CSI-RS资源配置,但不需要基于CSI-RS进行CSI测量。
3)基站在子帧n-7中通过DCI触发UE2进行CSI测量和反馈。同时在触发信令中指示UE2其CSI测量窗口的大小为L=10个子帧。
4)UE2接收到触发信令后,在之后的L=10个子帧内进行CSI测量,并在测量窗口结束后(即子帧n+3之后)最近的PUCCH资源上上报测量得到的CSI。其中,终端可以基于测量窗口内的两个CSI-RS子帧(即子帧n-5和子帧n)进行信道信息测量,这两个子帧中的CSI-RS采用UE2的赋形向量。
需要说明的是,上述实施例中只是以垂直维度的波束赋形为例进行说明,不对赋形方式进行限定,本发明实施例中基站也可以采用其他赋形向量对CSI-RS进行赋形。例如,基站可以采用水平维度的赋形向量对CSI-RS进行赋形;又如,基站还可以采用水平垂直二维的赋形向量对CSI-RS进行赋形等等。
上述方法处理流程可以用软件程序实现,该软件程序可以存储在存储介质中,当存储的软件程序被调用时,执行上述方法步骤。
基于同一发明构思,本发明实施例中还提供了一种信道状态信息的反馈设备,由于该设备解决问题的原理与上述一种信道状态信息的反馈方法相似,因此该设备的实施可以参见方法的实施,重复之处不再赘述。
本发明实施例提供的一种信道状态信息的反馈设备,如图9所示,所述设备包括:
接收模块91,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92,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。
本发明实施例中,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设备的;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。
进一步,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。
优选的,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为接收到所述触发信令的子帧与上报CSI的子帧之间所包含的连续子帧个数。
基于上述任一实施例,作为一种优选的实现方式,所述处理模块92具体用于:
在所述接收模块91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。
优选的,所述处理模块92具体用于
在所述接收模块91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91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。
作为另一种优选的实现方式,所述处理模块92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91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。
优选的,所述处理模块92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91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91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。
基于同一发明构思,本发明实施例中还提供了一种信道状态信息的反馈控制设备,由于该设备解决问题的原理与上述一种信道状态信息的反馈控制方法相似,因此该设备的实施可以参见方法的实施,重复之处不再赘述。
本发明实施例提供的一种信道状态信息的反馈控制设备,如图10所示,所述设备包括:
发送模块101,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102,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。
本发明实施例中,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设备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。
进一步,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。
优选的,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为发送所述触发信令的子帧与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。
基于上述任一实施例,作为一种优选的实现方式,所述接收模块102具体用于:
在所述发送模块101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。
优选的,所述接收模块102具体用于:
在所述发送模块101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101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。
作为另一种优选的实现方式,所述接收模块102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101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。
优选的,所述接收模块102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101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101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。
下面结合优选的硬件结构,对本发明实施例提供的终端的结构、处理方式进行说明。
在图11的实施例中,终端包括接收机111、发送机112以及分别与该接收机111和发送机112连接的至少一个处理器113,其中:
接收机111用于执行: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;
处理器113用于读取存储器114中的程序,执行下列过程:触发所述发送机112将所述处理器113在所述测量窗口内测量得到的CSI,上报给所述基站。
在图11中,总线架构可以包括任意数量的互联的总线和桥,具体由处理器113代表的一个或多个处理器和存储器114代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起,这些都是本领域所公知的,因此,本文不再对其进行进一步描述。总线接口提供接口。接收机111和发送机112提供用于在传输介质上与各种其他装置通信的单元。针对不同的用户设备,用户接口115还可以是能够外接内接需要设备的接口,连接的设备包括但不限于小键盘、显示器、扬声器、麦克风、操纵杆等。
处理器113负责管理总线架构和通常的处理,存储器114可以存储处理器113在执行操作时所使用的数据。
本发明实施例中,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。
进一步,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。
优选的,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为接收到所述触发信令的子帧与上报CSI的子帧之间所包含的连续子帧个数。
基于上述任一实施例,作为一种优选的实现方式,所述处理器113具体执行:
在所述接收机111接收到所述触发信令并经过M个子帧后,触发发送机112将所述处理器113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。
优选的,所述处理器113具体执行:
在所述接收机111接收到所述触发信令并经过M个子帧后,触发发送机112通过最近的PUCCH资源,将所述处理器113在所述第一测量窗口内测量得到的CSI,上报给所述基站;或者在所述接收机111接收到所述触发信令后的第M个子帧上,触发发送机112通过PUSCH资源,将所述处理器113在所述第一测量窗口内测量得到的CSI,上报给所述基站。
作为另一种优选的实现方式,所述处理器113具体执行:
在第二测量窗口结束并经过M个子帧后,触发发送机112将所述处理器113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
在所述接收机111接收到所述触发信令并经过M个子帧后,触发发送机112将所述处理器113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。
优选的,所述处理器113具体执行:
在所述第二测量窗口结束并经过M个子帧后,触发发送机112通过最近的PUCCH资 源,将所述处理器113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,触发发送机112通过PUSCH资源,将所述处理器113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
在所述接收机111接收到所述触发信令并经过M个子帧后,触发发送机112通过最近的PUCCH资源,将所述处理器113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
在所述接收机111接收到所述触发信令后的第M个子帧上,触发发送机112通过PUSCH资源,将所述处理器113在所述第二测量窗口内测量得到的CSI,上报给所述基站。
下面结合优选的硬件结构,对本发明实施例提供的基站的结构、处理方式进行说明。
在图12的实施例中,基站包括接收机121、发送机122、以及与该接收机121和该发送机122分别连接的至少一个处理器123,其中:
处理器123,用于读取存储器124中的程序,执行下列过程:触发发送机122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;
接收机121用于执行:接收所述终端上报的在所述测量窗口内测量得到的CSI。
在图12中,总线架构可以包括任意数量的互联的总线和桥,具体由处理器123代表的一个或多个处理器和存储器124代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起,这些都是本领域所公知的,因此,本文不再对其进行进一步描述。总线接口提供接口。接收机121和发送机122,提供用于在传输介质上与各种其他装置通信的单元。处理器123负责管理总线架构和通常的处理,存储器124可以存储处理器123在执行操作时所使用的数据。
本发明实施例中,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。
进一步,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。
优选的,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为发送所述触发信令的子帧与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。
基于上述任一实施例,作为一种优选的实现方式,所述接收机121具体执行:
在所述发送机122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。
优选的,所述接收机121具体执行:
在所述发送机122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
在所述发送机122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。
作为另一种优选的实现方式,所述接收机121具体执行:
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
在所述发送机122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。
优选的,所述接收机121具体执行:
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
在所述发送机122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
在所述发送机122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。
本领域内的技术人员应明白,本发明的实施例可提供为方法、系统、或计算机程序产品。因此,本发明可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且,本发明可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本发明是参照根据本发明实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器,使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的 装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中,使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品,该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上,使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理,从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
尽管已描述了本发明的优选实施例,但本领域内的技术人员一旦得知了基本创造性概念,则可对这些实施例作出另外的变更和修改。所以,所附权利要求意欲解释为包括优选实施例以及落入本发明范围的所有变更和修改。
显然,本领域的技术人员可以对本发明实施例进行各种改动和变型而不脱离本发明实施例的精神和范围。这样,倘若本发明实施例的这些修改和变型属于本发明权利要求及其等同技术的范围之内,则本发明也意图包含这些改动和变型在内。

Claims (28)

  1. 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。
  2. 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。
  3. 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。
  4. 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。
  5. 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。
  6. 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。
  7. 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。
  8. 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。
  9. 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。
  10. 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。
  11. 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。
  12. 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。
  13. 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。
  14. 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。
  15. 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。
  16. 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。
  17. 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。
  18. 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。
  19. 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。
  20. 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。
  21. 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。
  22. 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。
  23. 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。
  24. 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。
  25. 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。
  26. 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。
  27. 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。
  28. 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。
PCT/CN2016/090522 2015-07-20 2016-07-19 一种信道状态信息的反馈及其控制方法和设备 WO2017012535A1 (zh)

Priority Applications (4)

Application Number Priority Date Filing Date Title
KR1020187004456A KR20180030157A (ko) 2015-07-20 2016-07-19 채널 상태 정보 피드백 및 제어 방법 및 디바이스
US15/745,122 US10461832B2 (en) 2015-07-20 2016-07-19 Channel status information feedback and control method and device
JP2018503158A JP2018522488A (ja) 2015-07-20 2016-07-19 チャネル状態情報のフィードバック及びその制御方法及び装置
EP16827226.8A EP3327942A4 (en) 2015-07-20 2016-07-19 Channel status information feedback and control method and device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201510429049.3 2015-07-20
CN201510429049.3A CN106656280A (zh) 2015-07-20 2015-07-20 一种信道状态信息的反馈及其控制方法和设备

Publications (1)

Publication Number Publication Date
WO2017012535A1 true WO2017012535A1 (zh) 2017-01-26

Family

ID=57833779

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2016/090522 WO2017012535A1 (zh) 2015-07-20 2016-07-19 一种信道状态信息的反馈及其控制方法和设备

Country Status (6)

Country Link
US (1) US10461832B2 (zh)
EP (1) EP3327942A4 (zh)
JP (1) JP2018522488A (zh)
KR (1) KR20180030157A (zh)
CN (1) CN106656280A (zh)
WO (1) WO2017012535A1 (zh)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10333680B2 (en) * 2015-10-21 2019-06-25 Lg Electronics Inc. Method of reporting CSI in wireless communication system supporting unlicensed band and apparatus supporting the same
WO2018227538A1 (en) 2017-06-16 2018-12-20 Qualcomm Incorporated Reporting aperiodic csi via pucch
CN109302746B (zh) 2017-11-17 2019-11-01 华为技术有限公司 检测窗指示方法及装置
WO2019148399A1 (zh) * 2018-01-31 2019-08-08 华为技术有限公司 上报信道状态信息csi的方法和装置
WO2020068906A1 (en) * 2018-09-25 2020-04-02 Idac Holdings, Inc. Wtru autonomous beamformed unicast transmission
CN113748632B (zh) * 2019-04-25 2023-05-05 华为技术有限公司 信道状态信息参考信号的配置方法和装置
WO2024016313A1 (en) * 2022-07-22 2024-01-25 Qualcomm Incorporated Channel state information configuration

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101931989A (zh) * 2009-06-26 2010-12-29 华为技术有限公司 一种反馈方法和装置
CN102291764A (zh) * 2011-08-05 2011-12-21 电信科学技术研究院 配置测量信息和进行上报的方法、系统及设备
CN102291224A (zh) * 2011-08-18 2011-12-21 电信科学技术研究院 一种非周期csi的反馈方法和设备
CN102368697A (zh) * 2011-09-30 2012-03-07 中兴通讯股份有限公司 干扰测量信令通知、干扰测量及反馈方法及其装置

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5695039B2 (ja) * 2009-06-30 2015-04-01 テレフオンアクチーボラゲット エル エム エリクソン(パブル) 通信ネットワークにおける方法及び構成
US8638684B2 (en) * 2010-04-05 2014-01-28 Qualcomm Aperiodic channel state information request in wireless communication
US9219571B2 (en) 2010-04-13 2015-12-22 Qualcomm Incorporated Aperiodic CQI reporting in a wireless communication network
US9762372B2 (en) * 2010-06-15 2017-09-12 Texas Instruments Incorporated CSI reporting on PUSCH for carrier aggregation
KR20120083192A (ko) * 2011-01-17 2012-07-25 주식회사 팬택 무선통신 시스템에서 채널 상태 정보의 전송 장치 및 방법
US10085164B2 (en) * 2011-04-28 2018-09-25 Qualcomm Incorporated System and method for managing invalid reference subframes for channel state information feedback
CN102291223B (zh) * 2011-08-05 2014-03-12 电信科学技术研究院 信道状态信息反馈指示及反馈方法和设备
ES2751147T3 (es) * 2011-10-27 2020-03-30 Nokia Solutions & Networks Oy Proporcionar cobertura de CSI mejorada notificando la misma medida en múltiples subtramas
GB2496451A (en) * 2011-11-14 2013-05-15 Renesas Mobile Corp Designating a subframe for channel state information measurement at least a specified number of subframes before a subframe in which it is to be reported
CN103391174B (zh) * 2012-05-10 2019-06-11 中兴通讯股份有限公司 Csi反馈信令的指示配置方法及基站
AU2013260212B2 (en) * 2012-05-10 2015-12-10 Telefonaktiebolaget L M Ericsson (Publ) Methods and arrangements for CSI reporting
CN103427938B (zh) * 2012-05-18 2018-11-27 电信科学技术研究院 配置信道测量和dl csi反馈的方法、系统及设备
EP2856661A2 (en) * 2012-06-04 2015-04-08 Interdigital Patent Holdings, Inc. Communicating channel state information (csi) of multiple transmission points
US11121834B2 (en) * 2012-06-18 2021-09-14 Samsung Electronics Co., Ltd. Aperiodic and periodic CSI feedback modes for coordinated multi-point transmission
US9912430B2 (en) * 2012-07-06 2018-03-06 Samsung Electronics Co. Ltd. Method and apparatus for channel state information feedback reporting
EP2874453B1 (en) * 2012-09-04 2018-10-24 Huawei Technologies Co., Ltd. Channel measurement processing method, base station, and user equipment
CN103945449B (zh) * 2013-01-18 2018-12-04 中兴通讯股份有限公司 Csi测量方法和装置
US20160056877A1 (en) * 2013-04-16 2016-02-25 Lg Electronics Inc. Method and apparatus for reporting channel state information in wireless communication system
WO2015168925A1 (en) * 2014-05-09 2015-11-12 Qualcomm Incorporated Restricted aperiodic csi measurement reporting in enhanced interference management and traffic adaptation
CN105284148B (zh) * 2014-05-19 2020-02-21 华为技术有限公司 一种基站设备、用户设备及信道状态信息的上报方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101931989A (zh) * 2009-06-26 2010-12-29 华为技术有限公司 一种反馈方法和装置
CN102291764A (zh) * 2011-08-05 2011-12-21 电信科学技术研究院 配置测量信息和进行上报的方法、系统及设备
CN102291224A (zh) * 2011-08-18 2011-12-21 电信科学技术研究院 一种非周期csi的反馈方法和设备
CN102368697A (zh) * 2011-09-30 2012-03-07 中兴通讯股份有限公司 干扰测量信令通知、干扰测量及反馈方法及其装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3327942A4 *

Also Published As

Publication number Publication date
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

Similar Documents

Publication Publication Date Title
US10567061B2 (en) Method for feeding back channel state information and an apparatus
WO2017012535A1 (zh) 一种信道状态信息的反馈及其控制方法和设备
WO2019085842A1 (en) System and method for indicating wireless channel status
WO2020035069A1 (zh) 一种上行传输指示的方法、终端、基站及计算机存储介质
US11006410B2 (en) Method and apparatus for transmitting uplink information
JP6462106B2 (ja) チャネル状態情報の測定方法及び装置
WO2018126887A1 (zh) 信道状态信息测量上报的配置方法及相关设备
JP2020507236A (ja) リソース構成方法および装置
CN111345007A (zh) 信令指示和接收方法、装置及通信系统
CN108605339A (zh) 一种上行控制信息传输的方法及装置
US20190200381A1 (en) Methods and apparatuses for skipping transport block transmission depending on uplink control information transmission
CN111586858A (zh) 信号传输方法和通信装置
US20200214004A1 (en) Data communication method, terminal device, and network device
WO2018082510A1 (zh) 信道状态信息反馈的方法与装置
CN109644411B (zh) 一种数据传输速率的控制方法及设备
WO2020156562A1 (zh) 通信方法和装置
WO2018173003A1 (en) Method and apparatus for channel state information acquisition in low latency wireless systems
US8982808B2 (en) Method for transmitting a signal and communications apparatus
WO2017020578A1 (zh) Srs的指示发送方法、srs的发送方法和装置
WO2016145918A1 (zh) 一种预编码类型指示的取值确定方法及装置
WO2021031042A1 (zh) 信号发送和接收方法以及装置
CN114071748A (zh) 信号传输方法、终端和网络设备
WO2023184380A1 (en) Method and apparatus for reporting and receiving channel state information
WO2023184385A1 (en) Indication method and apparatus
WO2020220351A1 (zh) 一种通信方法及设备

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16827226

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 15745122

Country of ref document: US

ENP Entry into the national phase

Ref document number: 2018503158

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 20187004456

Country of ref document: KR

Kind code of ref document: A