WO2021168806A1 - 信道状态信息测量的方法和装置 - Google Patents

信道状态信息测量的方法和装置 Download PDF

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Publication number
WO2021168806A1
WO2021168806A1 PCT/CN2020/077221 CN2020077221W WO2021168806A1 WO 2021168806 A1 WO2021168806 A1 WO 2021168806A1 CN 2020077221 W CN2020077221 W CN 2020077221W WO 2021168806 A1 WO2021168806 A1 WO 2021168806A1
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WIPO (PCT)
Prior art keywords
csi
indication information
terminal device
information
measurement signal
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PCT/CN2020/077221
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English (en)
French (fr)
Inventor
余健
邵家枫
丁洋
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华为技术有限公司
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP20921883.3A priority Critical patent/EP4087346A4/en
Priority to PCT/CN2020/077221 priority patent/WO2021168806A1/zh
Priority to CN202080094768.3A priority patent/CN115039472A/zh
Publication of WO2021168806A1 publication Critical patent/WO2021168806A1/zh
Priority to US17/895,127 priority patent/US20220408288A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0057—Physical resource allocation for CQI
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0055—Physical resource allocation for ACK/NACK
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H04L5/0062—Avoidance of ingress interference, e.g. ham radio channels
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • This application relates to the field of communication technology, and in particular to a method and device for measuring channel state information (CSI).
  • CSI channel state information
  • the base station allocates time-frequency resources to the terminal equipment according to the CSI.
  • the CSI is measured by the terminal equipment according to the reference signal sent by the base station and fed back to the base station.
  • CSI includes rank indicator (RI) and precoding indicator (precoding indicator). matrix indicator, PMI), channel quality indicator (channel quality indicator, CQI), etc.
  • the terminal device can measure the channel quality at the current moment according to the channel state information reference signal (CSI-RS) sent by the base station, and then feed it back to the base station.
  • CSI-RS channel state information reference signal
  • multi-antenna port CSI measurement is usually supported.
  • the number of CSI-RS ports is usually configured to be the same as the number of antenna ports. The greater the number of CSI-RS ports, the greater the number of radio frequency channels of the base station, and the stronger the ability to transmit multi-stream data in parallel. In large-scale array antenna technology, the number of RF channels can reach 32 or 64 or more.
  • the base station consumes more power when the number of ports configured in the CSI measurement is large, and the operating cost is higher.
  • the present application provides a method and device for measuring channel state information, which provide the possibility to reduce the power consumption of network equipment.
  • the first aspect of the embodiments of the present application provides a method for measuring channel state information, including:
  • the terminal device receives configuration information from the network device, the configuration information includes first indication information and second indication information; the first indication information is used to indicate K channel measurement signal resources, and K is greater than or equal to 2; the second indication information is used to : Instruct the terminal device to measure the aggregated CSI according to N channel measurement signal resources; N is less than or equal to K; the terminal device measures the N channel measurement signal resources according to the configuration information, and calculates the aggregated CSI according to the N measurement results; aggregation CSI is the CSI of M antenna ports, and M is the sum of the number of antenna ports of N channel measurement signal resources.
  • the number of time domain symbols occupied by the channel measurement signal resources during CSI measurement can be reduced, which is conducive to the use of time domain symbol turn-off function for network equipment to reduce network side energy consumption. It is possible to reduce the power consumption of network equipment.
  • N is less than K
  • the second indication information includes: indexes of N channel measurement signal resources among the K channel measurement signal resources, and indication information used to indicate aggregate measurement CSI.
  • N channel measurement signal resources can be obtained according to the indexes of the N channel measurement signal resources, which have been used to aggregate and measure CSI.
  • N is equal to K
  • the second indication information is information that enables feedback of aggregated CSI.
  • the method further includes: the terminal device sends the aggregated CSI to the network device according to the second indication information. In this way, the network device can perform resource scheduling and the like according to the aggregated CSI fed back by the terminal device.
  • the terminal device calculates the aggregated CSI according to the N measurement results, including: the terminal device uses the following information to calculate the aggregated CSI: the channel corresponding to the N multi-antenna port resources, and the terminal device’s receiving antenna The weight coefficient, the measured precoding obtained by the terminal equipment measurement, the interference covariance matrix and the variance of the noise.
  • the configuration information also includes: third indication information, used to instruct the terminal device to measure aggregated CSI in multiple time units; wherein, part of the resources in the multiple time units are used for the terminal device to measure aggregation CSI, the remaining resources in multiple time units are used for other devices to measure CSI.
  • third indication information used to instruct the terminal device to measure aggregated CSI in multiple time units; wherein, part of the resources in the multiple time units are used for the terminal device to measure aggregation CSI, the remaining resources in multiple time units are used for other devices to measure CSI.
  • the third indication information includes a time unit offset parameter.
  • the third indication information includes: one or more time units, and a time unit offset parameter corresponding to each time unit.
  • the third indication information includes: indication information for indicating periodic measurement.
  • the terminal device receives fourth indication information from the network device, and the fourth indication information is used to activate or deactivate aggregate measurement.
  • the terminal device receives fifth indication information from the network device, where the fifth indication information is used to activate or deactivate N1 channel measurement signal resources of the aggregate measurement, and N1 is less than or equal to N.
  • the fifth indication information is used to activate or deactivate N1 channel measurement signal resources of the aggregate measurement, and N1 is less than or equal to N.
  • the terminal device sends the CSI corresponding to one or more of the N channel measurement signal resources to the network device. In this way, it can be used as a reference for network equipment in subsequent resource scheduling to achieve more flexible resource scheduling.
  • a second aspect of the embodiments of the present application provides a method for measuring channel state information, including:
  • the network device generates configuration information, and the configuration information includes first indication information and second indication information; the first indication information is used to indicate K channel measurement signal resources, and K is greater than or equal to 2; the second indication information is used to indicate the terminal device
  • the aggregated CSI is measured according to N channel measurement signal resources; N is less than or equal to K; the network device sends configuration information to the terminal device.
  • N is less than K
  • the second indication information includes: indexes of N channel measurement signal resources among the K channel measurement signal resources, and indication information used to indicate aggregate measurement CSI.
  • N is less than K
  • the second indication information is information that enables feedback of aggregated CSI.
  • the method further includes: the network device receives aggregated CSI from the terminal device; the aggregated CSI is for M antenna ports CSI, M is the sum of the number of antenna ports of N channel measurement signal resources.
  • the configuration information also includes: third indication information, used to instruct the terminal device to measure aggregated CSI in multiple time units; wherein, part of the resources in the multiple time units are used for the terminal device to measure aggregation CSI, the remaining resources in multiple time units are used for other devices to measure CSI.
  • the third indication information includes a time unit offset parameter.
  • the third indication information includes: one or more time units, and a time unit offset parameter corresponding to each time unit.
  • the third indication information includes: used to indicate that channel measurement signal resources in multiple periods should be aggregated and measured.
  • the method further includes: the network device closes the radio frequency channel that does not transmit the orthogonal frequency division multiplexing OFDM symbol.
  • the network device sends fourth indication information to the terminal device, and the fourth indication information is used to activate or deactivate aggregate measurement.
  • the network device sends fifth indication information to the terminal device.
  • the fifth indication information is used to activate or deactivate N1 channel measurement signal resources of the aggregate measurement, and N1 is less than or equal to N.
  • the network device receives CSI corresponding to one or more multi-channel measurement signal resources among the N channel measurement signal resources.
  • a third aspect of the embodiments of the present application provides an apparatus for measuring channel state information, which is applied to a terminal device, and includes: a receiving module configured to receive configuration information from a network device, the configuration information includes first indication information and second indication information;
  • the first indication information is used to: indicate K channel measurement signal resources, and K is greater than or equal to 2;
  • the second indication information is used to: instruct the terminal device to measure aggregated CSI according to N channel measurement signal resources; N is less than or equal to K; processing Module, used to measure N channel measurement signal resources according to configuration information, and calculate aggregate CSI according to N measurement results; aggregate CSI is the CSI of M antenna ports, and M is the antenna of N channel measurement signal resources The sum of the number of ports.
  • N is less than K
  • the second indication information includes: indexes of N channel measurement signal resources among the K channel measurement signal resources, and indication information used to indicate aggregate measurement CSI.
  • N is less than K
  • the second indication information is information that enables feedback of aggregated CSI
  • the apparatus further includes: a sending module, configured to send aggregated CSI to the network device according to the second indication information.
  • the processing module is specifically used to calculate the aggregated CSI using the following information: the channel corresponding to the N multi-antenna port resources, the weight coefficient on the receiving antenna of the terminal device, and the measured value obtained by the terminal device. Precoding, interference covariance matrix and noise variance.
  • the configuration information also includes: third indication information, used to instruct the terminal device to measure aggregated CSI in multiple time units; wherein, part of the resources in the multiple time units are used for the terminal device to measure aggregation CSI, the remaining resources in multiple time units are used for other devices to measure CSI.
  • the third indication information includes a time unit offset parameter.
  • the third indication information includes: one or more time units, and a time unit offset parameter corresponding to each time unit.
  • the third indication information includes: indication information for indicating periodic measurement.
  • the receiving module is further configured to receive fourth indication information from the network device, and the fourth indication information is used to activate or deactivate aggregate measurement.
  • the receiving module is configured to receive fifth indication information from the network device, the fifth indication information is used to activate or deactivate N1 channel measurement signal resources of the aggregate measurement, and N1 is less than or equal to N .
  • the sending module is further configured to send the CSI corresponding to one or more of the N channel measurement signal resources to the network device.
  • the fourth aspect of the embodiments of the present application provides an apparatus for measuring channel state information, which is applied to a network device, and includes: a processing module for generating configuration information, the configuration information includes first indication information and second indication information; first indication information Used for: indicating K channel measurement signal resources, K is greater than or equal to 2; the second indication information is used for: instructing the terminal device to measure aggregated CSI according to N channel measurement signal resources; N is less than or equal to K; the sending module is used for Send configuration information to the terminal device.
  • N is less than K
  • the second indication information includes: indexes of N channel measurement signal resources among the K channel measurement signal resources, and indication information used to indicate aggregate measurement CSI.
  • N is less than K
  • the second indication information is information that enables feedback of aggregated CSI.
  • the apparatus further includes: a receiving module for receiving aggregated CSI from terminal equipment; the aggregated CSI is M For the CSI of the antenna port, M is the sum of the number of antenna ports of the N channel measurement signal resources.
  • the configuration information also includes: third indication information, used to instruct the terminal device to measure aggregated CSI in multiple time units; wherein, part of the resources in the multiple time units are used for the terminal device to measure aggregation CSI, the remaining resources in multiple time units are used for other devices to measure CSI.
  • the third indication information includes a time unit offset parameter.
  • the third indication information includes: one or more time units, and a time unit offset parameter corresponding to each time unit.
  • the third indication information includes: used to indicate that channel measurement signal resources in multiple periods should be aggregated and measured.
  • the apparatus further includes: the network device closes the radio frequency channel that does not transmit the orthogonal frequency division multiplexing OFDM symbol.
  • the sending module is further configured to send fourth indication information to the terminal device, and the fourth indication information is used to activate or deactivate aggregated measurement.
  • the sending module is also used to send fifth indication information to the terminal device.
  • the fifth indication information is used to activate or deactivate N1 channel measurement signal resources of the aggregate measurement, and N1 is less than or equal to N .
  • the receiving module is configured to receive CSI corresponding to one or more multi-channel measurement signal resources among the N channel measurement signal resources.
  • the fifth aspect of the embodiments of the present application provides a communication device.
  • the communication device may be a chip or a system on a chip in a terminal device, and includes a processor and an interface circuit.
  • the interface circuit is used to receive code instructions and transmit them to the processor; To run code instructions to execute any possible design method such as the first aspect or the first aspect.
  • the sixth aspect of the embodiments of the present application provides a communication device.
  • the communication device may be a chip in a terminal device or a system on a chip, and includes a processor and an interface circuit.
  • the interface circuit is used to receive and transmit code instructions to the processor; To run code instructions to execute the second aspect or any one of the possible design methods of the second aspect.
  • a seventh aspect of the embodiments of the present application provides a computer-readable storage medium, where the computer-readable storage medium is used to store a computer program, and the computer program is used to implement any possible design method such as the first aspect or the first aspect .
  • An eighth aspect of the embodiments of the present application provides a computer-readable storage medium, where the computer-readable storage medium is used to store a computer program, and the computer program is used to implement any possible design method such as the second aspect or the second aspect .
  • the ninth aspect of the embodiments of the present application provides a communication system, including the device of the third aspect and the corresponding feasible implementation manner, and the fourth aspect and the device of the corresponding feasible implementation manner.
  • FIG. 1 is a schematic diagram of an application scenario of a method for measuring channel state information provided by an embodiment of this application;
  • Figure 2 is a schematic flow diagram of a general method for measuring state information
  • Fig. 3 is a schematic diagram of the time-frequency position of a common CSI-RS
  • FIG. 4 is a schematic flowchart of a method for measuring channel state information according to an embodiment of this application.
  • FIG. 5 is a schematic diagram of time-frequency position comparison of two CSI-RSs
  • FIG. 6 is another schematic diagram of time-frequency position comparison of two CSI-RSs
  • FIG. 7 is a schematic flowchart of another method for measuring channel state information according to an embodiment of this application.
  • FIG. 8 is a schematic diagram of measuring multiple terminal devices based on CSI-RS resources in two time slots
  • Fig. 9 is a schematic diagram of antenna port changes of network equipment
  • FIG. 10 is a schematic structural diagram of a device for measuring channel state information according to an embodiment of this application.
  • FIG. 11 is a schematic structural diagram of another device for measuring channel state information according to an embodiment of this application.
  • FIG. 12 is a schematic diagram of the hardware structure of a communication device provided by an embodiment of the application.
  • the method in the embodiments of the present application can be applied in long term evolution (LTE), and can also be applied in a fifth generation mobile communication (5 Generation, 5G) system, or a future mobile communication system.
  • LTE long term evolution
  • 5G fifth generation mobile communication
  • Fig. 1 is a schematic structural diagram of a communication system provided by an embodiment of the application.
  • the communication system may include: network device 01 and terminal device 021, terminal device 022, terminal device 023, and terminal device 024; it can be understood that the number of terminal devices included in the communication system can be based on actual application scenarios.
  • the setting for example, includes one terminal device or includes multiple terminal devices, which is not limited in the embodiment of the present application.
  • the process of performing CSI measurement between the network device 01 and each terminal device is similar, in this embodiment of the present application, the process of performing CSI measurement between the network device 01 and any terminal device is taken as an example for description.
  • the execution subject of the method on the network device side may be the network device or the device in the network device (it should be noted that the network device is described as an example in the embodiment provided in this application) .
  • the device in the network device may be a chip system, a circuit, or a module, etc., which is not limited in this application.
  • the network equipment involved in the embodiments of the present application may include, but is not limited to: a base station, and a transmission reception point (TRxP).
  • a base station also known as a radio access network (RAN) device, is a device that connects a terminal to a wireless network, and can be a global system of mobile communication (GSM) or code division
  • GSM global system of mobile communication
  • BTS base transceiver station
  • CDMA code division multiple access
  • nodeB, NB base station
  • WCDMA wideband code division multiple access
  • the evolved base station evolutional node B, eNB or eNodeB
  • LTE long term evolution
  • gNodeB, gNB long term evolution
  • the execution subject of the terminal device (or terminal) side method can be the terminal device or the device in the terminal device (it should be noted that in the embodiment provided in this application, the terminal The device is described as an example).
  • the device in the terminal device may be a chip system, a circuit, or a module, etc., which is not limited in this application.
  • the terminal device involved in the embodiment of the present application may be a wireless terminal or a wired terminal.
  • a wireless terminal may be a device that provides voice and/or other service data connectivity to users, a handheld device with wireless connection function, or other processing devices connected to a wireless modem.
  • a wireless terminal can communicate with one or more core networks via a radio access network (RAN).
  • the wireless terminal can be a mobile terminal, such as a mobile phone (or “cellular” phone) and a computer with a mobile terminal. For example, they can be portable, pocket-sized, handheld, computer-built or vehicle-mounted mobile devices that exchange language and/or data with the wireless access network.
  • a wireless terminal can also be called a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, and a remote terminal.
  • Access terminal access terminal
  • user terminal user terminal
  • user agent user agent
  • user equipment user device or user equipment, UE
  • the terminal device or network device involved in the embodiments of the present application may include a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer.
  • the hardware layer includes hardware such as a central processing unit (dentral processing unit, CPU), a memory management unit (memory management unit, MMU), and memory (also referred to as main memory).
  • the operating system can be any one or more computer operating systems that implement business processing through processes, for example, Linux operating systems, Unix operating systems, Android operating systems, iOS operating systems, or windows operating systems.
  • the application layer includes applications such as browsers, address books, word processing software, and instant messaging software.
  • the terminal equipment can send downlink data to the terminal equipment UE1 to UE4, and the terminal equipment UE1 to UE4 can also send uplink data to the network data.
  • communication can be divided into different types according to different types of sending nodes and receiving nodes. For example, sending information from a network device to a terminal device is called downlink (DL) communication, and sending information from a terminal device to the network device is called uplink (UL) communication.
  • DL downlink
  • UL uplink
  • the fourth generation (4G) and fifth generation (5G) wireless communication systems there is a synchronization signal/broadcast in the downlink Channel (synchronization signal/physical broadcast channel, SS/PBCH), channel state information reference signal (Channel state information reference signal, CSI-RS), dedicated demodulation reference signal (dedicated demodulation reference signal, DM-RS), and physical downlink control Signals or channels such as physical downlink control channel (PDCCH) and physical downlink shared channel (PDSCH).
  • SS/PBCH synchronization signal/physical broadcast channel
  • CSI-RS Channel state information reference signal
  • CSI-RS dedicated demodulation reference signal
  • DM-RS dedicated demodulation reference signal
  • PDCCH physical downlink control channel
  • PDSCH physical downlink shared channel
  • channel state information measurement which mainly includes rank indicator (rank indicator). , RI), precoding indicator (precoding matrix indicator, PMI), channel quality indicator (channel quality indicator, CQI), etc.
  • CSI channel state information measurement
  • the terminal measures the channel quality at the current moment according to the CSI-RS sent by the base station, and then feeds it back to the base station.
  • FIG. 2 is a schematic flow chart of a common CSI measurement. As shown in Figure 2, it can include:
  • the base station configures CSI-RS measurement and feedback parameters through radio resource control (Radio Resource Control, RRC) signaling.
  • the involved RRC information element (information element, IE) mainly includes CSI-MeasConfig, CSI-ResourceConfig, CSI-ReportConfig, etc. (for details, please refer to 3GPP TS38.331).
  • CSI-MeasConfig needs to configure CSI-RS resource parameters, including resource index, number of ports, time-frequency location, time-frequency density, etc.
  • Configure the feedback content in CSI-ReportConfig IE including CQI, PMI, RI feedback, etc.
  • S202 The terminal performs CSI measurement according to the CSI-RS resource measurement configuration information and the CSI feedback content configuration information.
  • S203 The terminal feeds back CSI content through the uplink control channel or the uplink data channel, including CQI, PMI, RI, etc.
  • the base station performs scheduling according to the CSI information fed back by the terminal, for example, completes time-frequency resource allocation, modulation and coding strategy (modulation and coding scheme, MCS) selection, data transmission block size selection, and so on. And prepare the physical downlink control channel (physical downlink control channel, PDCCH) and the physical downlink share channel (physical downlink share channel, PDSCH) transmission.
  • the PDCCH is used to indicate the time-frequency resource information allocated to the terminal, and the PDSCH is used to send service data.
  • S205 The base station sends PDCCH and PDSCH to the terminal.
  • S206 The terminal receives the PDCCH and PDSCH, and completes data demodulation.
  • the configuration information of the CSI-RS resource is indicated by the RRC layer parameter CSI-ResourceConfig, which defines the CSI-RS resource set and the CSI-RS resource index.
  • CSI-ResourceConfig defines the CSI-RS resource set and the CSI-RS resource index.
  • CSI-ResourceConfigId parameter Through the CSI-ResourceConfigId parameter, different CSI-ResourceConfig configuration information can be distinguished.
  • the content of CSI feedback is configured by the RRC layer parameter CSI-ReportConfig IE.
  • RRC layer parameter CSI-ReportConfig IE For detailed description of each parameter in the CSI-ReportConfig IE, please refer to 3GPP TS 38.331, which will not be repeated here.
  • the CSI-ReportConfig in the CSI feedback content and the CSI-ResourceConfig of the CSI-RS resource configuration information are related to each other.
  • the content to be fed back in the CSI-ReportConfig is obtained based on the CSI-RS resources configured in the CSI-ResourceConfig.
  • Both CSI-ReportConfig and CSI-ResourceConfig include CSI-ResourceConfigId, that is, CSI-ReportConfig can find the corresponding CSI-RS resource configuration through CSI-ResourceConfigId.
  • time-frequency positions of CSI-RS resources refer to Table 7.4.1.5.3-1 in TS 3GPP TS 38.212.
  • the current NR standard supports up to 32 antenna ports for CSI measurement. The following takes 32 ports as an example to describe the time-frequency position configuration of CSI-RS, as shown in Table 1.
  • CDM-Type, time domain symbols l 0 and l 1 , frequency domain positions k 0 and k 1 are configured by the RRC layer parameter CSI-RS-ResourceMapping.
  • the CSI-RS-ResourceMapping IE is included in each CSI-RS resource configuration, that is, the NZP-CSI-RS-Resource IE.
  • the parameter NZP-CSI-RS-ResourceId is used to distinguish different CSI-RS resources.
  • the CSI-ResourceConfig IE indicates which NZP-CSI-RS-ResourceIds are included.
  • Table 1 CSI-RS locations within a slot.
  • each grid in the figure represents a resource element RE (resource element), that is, a subcarrier.
  • the base station since the base station is configured with multiple antennas, it usually supports CSI measurement of multiple antenna ports.
  • the number of CSI-RS ports In order to measure the channel on each antenna port of the base station, the number of CSI-RS ports is usually configured to be the same as the number of antenna ports.
  • the typical number of CSI-RS ports is 2, 4, 8, 16, 32.
  • the number of radio frequency channels can reach 32 or 64, and the number of CSI-RS antenna ports can reach up to 32.
  • the base station consumes more power when the number of ports configured in the CSI measurement is large, and the operating cost is higher.
  • a radio remote unit accounts for nearly 70% to 80%.
  • the power consumption of the RRU increases as the number of radio frequency channels increases.
  • the more CSI-RS resources are configured the more orthogonal frequency division multiplexing (OFDM) symbols are occupied, and the number of transmitted OFDM symbols is larger.
  • OFDM orthogonal frequency division multiplexing
  • the number of time domain symbols occupied by the CSI-RS during CSI measurement can be reduced, which is beneficial for network equipment to use the time domain.
  • the symbolic shutdown function reduces the energy consumption of the network side, which provides the possibility to reduce the power consumption of network equipment.
  • the CSI measurement method in the embodiment of the present application can be applied to the application scenario shown in FIG. 1 and can also be used in other communication systems with uplink and downlink communication links, which is not specifically limited in the embodiment of the present application.
  • At least one refers to one or more, and “multiple” refers to two or more.
  • “And/or” describes the association relationship of the associated objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, and B exists alone, where A, B can be singular or plural.
  • the character “/” generally indicates that the associated objects before and after are in an “or” relationship.
  • the following at least one item (a)” or similar expressions refers to any combination of these items, including any combination of a single item (a) or a plurality of items (a).
  • at least one item (a) of a, b, or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple .
  • first”, “second”, “third”, etc. may be used to distinguish and illustrate the application of nouns in different scenarios, and actual applications may not include “first”, “second”, “third”, etc. , Does not constitute a limitation to the embodiments of the present application.
  • the channel measurement signal resource involved in the embodiment of the present application may be used to indicate the time-frequency position of the measurement signal, the number of antenna ports, and so on.
  • the channel measurement signal resource may be a CSI-RS resource, and so on.
  • the aggregation measurement involved in the embodiment of the present application may be the joint measurement of CSI with a high number of antenna ports by aggregating multiple channel measurement signal resources with a low number of antenna ports.
  • the channel measurement signal may be, for example, a CSI-RS or other signals used for channel measurement, which is not specifically limited in the embodiment of the present application.
  • the aggregated CSI involved in the embodiment of the present application may be CSI obtained based on aggregated measurement. Take the aggregated measurement of N CSI-RS resources to obtain the aggregated CSI as an example, the aggregated CSI is the CSI of M antenna ports, then M is the sum of the number of antenna ports of the N CSI-RS resources, and N is greater than or equal to 2. . It can be understood that in the embodiments of this application, the definition of aggregated CSI is used to distinguish the difference from the existing CSI and to facilitate the description of the embodiments of this application. In actual applications, “aggregated CSI" may be referred to as "CSI", etc. The embodiments of the present application do not specifically limit this.
  • FIG. 4 is a schematic flowchart of a method for measuring channel state information according to an embodiment of the application. As shown in FIG. 4, the method includes:
  • the network device sends configuration information used for aggregation measurement to the terminal device.
  • the configuration information is generated by a network device, and the configuration information may include first indication information and second indication information.
  • the first indication information is used to indicate K channel measurement signal resources, and K is greater than or equal to 2; the second indication information is used to indicate that the terminal device measures aggregated CSI according to the N channel measurement signal resources; N is less than or equal to K.
  • the first indication information may include configuration information of K channel measurement signal resources, for example, including one or more of channel measurement signal resource index, port number, time-frequency position, time offset, periodic and aperiodic transmission, etc. . Therefore, based on the first indication information, the terminal device can obtain K channel measurement signal resources for subsequent aggregate measurement.
  • the second indication information may be any character, number, etc., when the configuration information includes the second indication information, it may instruct the terminal device to measure aggregated CSI according to N channel measurement signal resources among the K channel measurement signal resources.
  • N is less than K
  • the second indication information may include the index of N channel measurement signal resources among the K channel measurement signal resources, and is used to indicate aggregation of N channel measurement signal resources to measure CSI Instructions.
  • N is equal to K
  • the second indication information may include indication information for instructing to aggregate N channel measurement signal resources to measure CSI.
  • the second indication information may be information that enables feedback of aggregated CSI.
  • the second indication information is configured to 1, it enables feedback of CSI measured based on aggregated CSI-RS resources.
  • Specific CSI includes CQI and PMI. , RI, etc.
  • the second indication information is configured as 0, there is no need to feed back the CSI obtained based on the aggregation measurement.
  • the first indication information and the second indication information may be sent through one piece of signaling, or may be sent through multiple pieces of signaling, which is not specifically limited in the embodiment of the present application.
  • the network device may send configuration information including the first indication information and the second indication information through RRC signaling.
  • the configuration information may include CSI-MeasConfig, CSI-ResourceConfig, CSI-ReportConfig IE, etc.
  • the configuration of CSI-MeasConfig and CSI-ResourceConfig can follow the usual scheme.
  • the first indication information and the second indication information can be configured in this parameter.
  • the fields "CSI-RS resource aggregation indication AggregatedCsiResourcesForChannelMeasurement” and "aggregated CSI feedback enable information indication AggregatedCsiReportFlag" are added to the RRC parameter CSI-ReportConfig IE.
  • the value of the AggregatedCsiResourcesForChannelMeasurement field may be CSI-ResourceConfigId.
  • CSI-ResourceConfigId is associated with CSI-ResourceConfig IE.
  • each CSI-ResourceConfig IE includes CSI-ResourceConfigId.
  • the CSI-ResourceConfig IE will indicate the specific CSI-RS resource set.
  • the CSI-RS resource set includes the CSI-RS resource index, such as the CSI-RS resource index NZP-CSI-RS-ResourceId, through the parameter NZP-CSI-RS -ResourceI to distinguish different CSI-RS resources.
  • AggregatedCsiReportFlag When AggregatedCsiReportFlag is configured to 1, even if the CSI information measured based on aggregated CSI-RS resources can be fed back, the specific CSI information includes CQI, PMI, RI, etc. When AggregatedCsiReportFlag is configured as 0, no feedback is required.
  • the time-frequency position of the CSI-RS can be configured by the RRC layer parameter CSI-RS-ResourceMapping.
  • the CSI-RS-ResourceMapping IE is included in each CSI-RS resource configuration, such as the NZP-CSI-RS-Resource IE.
  • the parameter nzp-CSI-RS-ResourceId is used to distinguish different CSI-RS resources.
  • the CSI-ResourceConfig IE will indicate which nzp-CSI-RS-ResourceIds are included.
  • the network device may also use other signaling to send configuration information.
  • the first indication information and the second indication information may also be independent of the usual configuration information.
  • the names of the parameters are also It can be replaced with other content according to the actual application, which is not specifically limited in the embodiment of the present application.
  • the direction of the beam sent by the network device to the terminal device is different due to the location and channel of each user.
  • different beam directions are weighted on the CSI-RS. Therefore, when measuring multiple terminal devices, the network device can configure different CSI-RS resources for different terminal devices for measurement.
  • FIG. 5 shows a comparison diagram of possible time-frequency positions of CSI-RS resources when common CSI measurement is used, and possible time-frequency positions of CSI-RS resources after CSI-RS resource aggregation.
  • FIG. 5a is a schematic diagram of possible time-frequency positions of CSI-RS resources when common CSI measurement is used, and the CSI-RS is 32 antenna ports.
  • Figure 5a shows the time-frequency positions of two CSI-RS resources, where each grid represents a resource element (RE).
  • RE resource element
  • Figure 5b is a comparison diagram of possible CSI-RS resource time-frequency positions after CSI-RS resource aggregation. If CSI-RS resource 1 is allocated to terminal 1, and CSI-RS resource 2 is allocated to terminal 2, then if CSI-RS resource 3 is to be used to measure terminal 3, by configuring two 16-antenna port CSI-RS resources (e.g. CSI-RS) RS4 and CSI-RS5) can be aggregated into a 32-antenna port CSI-RS resource 3, and two 16-antenna port CSI-RS resources can be shared with CSI-RS resource 1 and CSI-RS resource 3 to share OFDM symbols, so that The CSI measurement of 3 terminals can be completed through 8 OFDM symbols, which saves the number of OFDM symbols.
  • CSI-RS resource 1 is allocated to terminal 1
  • CSI-RS resource 2 is allocated to terminal 2
  • CSI-RS resource 3 is to be used to measure terminal 3
  • two 16-antenna port CSI-RS resources e.g.
  • FIG. 6 shows another comparison diagram of possible CSI-RS resource time-frequency positions when common CSI measurement is used, and possible CSI-RS resource time-frequency positions after CSI-RS resource aggregation.
  • FIG. 6a is a schematic diagram of possible time-frequency positions of CSI-RS resources when common CSI measurement is used.
  • the CSI-RS is 32 antenna ports, and 8 OFDM symbols are required to configure two CSI-RS resources with 32 antenna ports.
  • Fig. 6b is a comparison diagram of possible time-frequency positions of CSI-RS resources after CSI-RS resource aggregation.
  • CSI-RS resource aggregation of two 16-antenna ports only 6 OFDM symbols are needed to complete the CSI measurement of two 32-antenna ports.
  • the method of aggregate measurement is used, for example, two 32-antenna ports, or four 16-antenna port CSI-RS resources, or one 32-antenna port CSI-RS resource and two 16-antenna port CSI-RS resources -RS resource, which can measure CSI information of 64 antenna ports.
  • the existing technical solutions do not support the measurement of CSI information of 64 antenna ports or more antenna ports.
  • the network equipment can close the radio frequency channel that does not send OFDM symbols, or close the power amplifier (PA), intermediate frequency, radio frequency unit, filter, etc. in the radio frequency channel, which can reduce the energy consumption of the network equipment.
  • PA power amplifier
  • the terminal device measures the aggregated CSI.
  • the terminal device may measure CSI information based on two or more CSI-RS resources according to configuration information, for example, measure CSI information of 32 antenna ports according to two CSI-RS resources of 16 antenna ports. For another example, measure the CSI information of 64 antenna ports according to the CSI-RS resources of two 32 antenna ports, or measure the CSI-RS resources of two 16 antenna ports and two CSI-RS resources of 32 antenna ports. CSI information of 96 antenna ports, etc.
  • the terminal device may use the following information to calculate the aggregated CSI: the channel corresponding to the N multi-antenna port resources, the weight coefficient on the receiving antenna of the terminal device, the measured precoding obtained by the terminal device, and the interference covariance matrix. And the variance of the noise.
  • the transmission power is p
  • the channel corresponding to CSI-RS resource 2 with 16 antenna ports is H 2
  • the transmission power is p
  • the signal to interference plus noise ratio (SINR) ⁇ 1 calculation based on a CSI-RS resource 1 with 16 antenna ports can satisfy the formula (1):
  • w 1 is the weight coefficient on the terminal receiving antenna
  • v 1 is the precoding obtained by measurement
  • I 1 is the interference covariance matrix
  • ⁇ 2 is the variance of noise (ie, noise power). It can be understood that the above formula may be a certain RE SNR, and may be a common method for calculating SINR.
  • the calculation method of the CSI-RS resource 1 with 16 antenna ports may also be used, which will not be repeated here.
  • the terminal device can calculate the aggregated CSI based on the CSI-RS resources of the two 16-antenna ports.
  • the aggregated SINR ( ⁇ aggregaed ) calculation can satisfy the formula (2):
  • w is the weight coefficient on the receiving antenna of the terminal device
  • v is the precoding obtained by measurement
  • I is the interference covariance matrix.
  • the channel is obtained by measuring the CSI-RS resources of two 16-antenna ports.
  • the corresponding precoding matrix v and the receiving weight coefficient w will change accordingly.
  • the obtaining of the precoding matrix v also depends on the aggregated channel [H1H2]. For example, one method is to obtain the eigenvector as the precoding according to the eigenvalue decomposition of the channel, and the other method is to use codebook-based Method to get the precoding.
  • the SINR of each RE the SINR of each subband (including multiple consecutive RBs) can be calculated, and the CQI of each subband can be determined by checking the SINR threshold corresponding to each modulation mode and code rate in the CQI table. index.
  • the terminal device measures CSI according to the aggregated CSI-RS resources, including RI, PMI, RI, etc., and feeds back the aggregated measured CSI to the network device.
  • the method of aggregated measurement of multiple channel measurement signal resources can reduce the occupation of OFDM symbols, which is beneficial for network equipment to use the time-domain symbol shutdown function to reduce network-side energy consumption. It is possible to reduce the power consumption of network equipment. And through the aggregation of channel measurement signal resources, it can support CSI measurement with 64 antenna ports or more than 64 antenna ports, which is beneficial to increase system capacity, thereby reducing data transmission time, and achieving the purpose of energy saving of the base station.
  • it can also include:
  • the terminal device sends the aggregated CSI to the network device.
  • the terminal device may feed back the aggregated CSI to the network device based on the indication of enabling feedback of the aggregated CSI.
  • the terminal device may also feed back the CSI corresponding to one or more of the N channel measurement signal resources.
  • the embodiment of the present application does not specifically limit this.
  • S404 The network device performs resource scheduling according to the CSI fed back by the terminal device.
  • the network device may perform any form of resource scheduling based on the CSI fed back by the base station, which is not specifically limited in the embodiment of the present application.
  • the base station side assumes that the received CSI information fed back by the terminal is a result obtained based on aggregated CSI-RS resources.
  • the precoding used to map the data carried by the PDSCH channel to the antenna port is the precoding of formula (2), and when MCS is selected, the CQI can be obtained based on the SINR in formula (2) .
  • the process of mapping transmission data to each antenna port can satisfy formula (3):
  • v is the precoding based on aggregated CSI-RS measurement
  • y (j-1) (i) is the data mapped on the j-1 layer before precoding
  • (i) is the data mapped on the antenna port p ⁇ -1 after precoding
  • j is less than or equal to the Rank fed back by the terminal device.
  • v is measured based on CSI-RS resources of two 16-antenna ports.
  • the network device when the network device is not configured with indication information for aggregate measurement and feedback, the network device can use the existing technical solution to use the CSI information.
  • the network device indicates the DCI information to the terminal device through the PDCCH, and sends data through the PDSCH.
  • the terminal device demodulates the PDSCH data according to the DCI carried by the PDCCH.
  • S405 and S406 can be implemented based on common methods, and will not be repeated here.
  • FIG. 7 is a schematic flowchart of a method for measuring channel state information according to an embodiment of this application. As shown in FIG. 7, the method includes:
  • S701 The network device sends configuration information used for cross-time unit measurement to the terminal device.
  • the time unit in the embodiment of the present application may be a slot, a subframe, or the like.
  • the CSI measurement is based on CSI-RS resources in two or more time units.
  • a slot in NR includes 14 OFDM symbols in the time domain
  • a slot in LTE includes 7 OFDM symbols.
  • the configuration information may include third indication information, and the third indication information is used to instruct the terminal device to measure CSI in multiple time units.
  • the third indication information may include a time unit offset parameter, which may indicate the channel measurement signal resource of the current time unit and the channel measurement signal resource of the time unit whose current time unit is offset by the time unit offset parameter.
  • the third indication information includes: one or more time units, and a time unit offset parameter corresponding to each time unit. It may indicate the channel measurement signal resource of any one or more time units, and the channel measurement signal resource of the time unit offset by the time unit offset parameter.
  • the third indication information may include a time unit n and a time unit offset parameter t. If t is a natural number, two CSI-RS resources may be configured in the time unit n and the time unit n+t respectively. The number of time units may be one or more, and the time unit offset parameter corresponding to any time unit may also be one or more, which is not specifically limited in the embodiment of the present application.
  • the third indication information may include the time unit slot n, the time unit offset parameter t, t+2 corresponding to slot n, and the time unit offset parameter k corresponding to the time unit slot m, slot m, etc., to achieve Configure CSI-RS resources for more than two slots.
  • the time unit is a slot
  • the time unit offset parameter is a time slot offset parameter
  • the channel measurement signal resource is a CSI-RS resource as an example.
  • Different CSI-RS resources can be sent in different slots, and the slot offset can be indicated by the CSI-ResourcePeriodicityAndOffset IE. Specifically, it can be as follows:
  • slots4 indicates that the period of CSI-RS transmission is 4 slots. Which of the 4 slots is sent is determined by the slot offset value, that is, the candidate slot offset position is ⁇ 0, 1, 2, 3 ⁇ .
  • the existing CSI measurement scheme can be directly used.
  • the slot offset value is greater than the CSI-RS transmission period, assuming that the transmission period is 4 slots, CSI-RS resource 1 is sent on slot n, and CSI-RS resource 2 is sent on slot n+5, but because the period is 4 CSI-RS resource 2 will also appear on slot n+1, so the CSI-RS resources on slot n and slot n+1 can be directly used for aggregation measurement.
  • the third indication information may include: indication information for indicating periodic measurement.
  • indication information for indicating periodic measurement For example, a new field periodNumberForCrossSlotAgrregation can be added to the CSI-ReportConfig IE to identify whether to periodically perform CSI-RS aggregation measurements on resources.
  • the value of the periodNumberForCrossSlotAgrregation field can be a positive integer. For example, if the value is 2, it means that the CSI-RS resources of two consecutive periods are aggregated and measured. The details can be as follows:
  • the CSI measurement in the embodiment of this application is based on the CSI-RS resources in two or more slots, which can avoid the time-frequency resources occupied by the CSI-RS resources in one slot. Take measurements. The number of time-domain symbols occupied by CSI-RS can be reduced.
  • FIG. 8 shows a schematic diagram of measuring multiple terminal devices based on CSI-RS resources in two slots.
  • Fig. 8a may be slot n
  • Fig. 8b may be slot n+1.
  • CSI-RS resource 1 is allocated to terminal 1
  • CSI-RS resource 2 is allocated to terminal 2
  • CSI-RS resource 3 is to be used for terminal 3
  • a 16-antenna port CSI-RS 1 it can indicate that CSI-RS resource 3 shares OFDM symbols with 16-antenna port CSI-RS 1 in slot n+1, so that no additional 4 OFDM symbols can be allocated, that is, among them, Part of the resources in the multiple time units are used for the terminal device to measure the aggregated CSI, and the remaining resources in the multiple time units are used for other devices to measure the CSI, so that the number of OFDM symbols can be saved.
  • the network device may also instruct the terminal device to measure CSI based on CSI-RS resources of multiple time units, which will not be repeated here.
  • S702 The terminal device measures CSI across time units.
  • it can also include:
  • the terminal device sends the CSI to the network device.
  • the network device performs resource scheduling according to the CSI fed back by the terminal device.
  • the network device indicates the DCI information to the terminal device through the PDCCH, and sends data through the PDSCH.
  • S706 The terminal device demodulates the PDSCH data according to the DCI carried in the PDCCH.
  • S702, S703, S704, S705, and S706 can all be implemented in any usual manner, and details are not described herein again.
  • the embodiment corresponding to FIG. 7 can be implemented separately, and the effect of saving OFDM symbols can be achieved by measuring across time units. Further, the network device can close the radio frequency channel that does not send OFDM symbols, or close the radio frequency channel.
  • the power amplifier (PA), intermediate frequency, radio frequency unit, filter, etc. can reduce the energy consumption of network equipment.
  • the embodiment corresponding to FIG. 7 may also be implemented in combination with the embodiment corresponding to FIG. 4, for example, the terminal may be instructed to measure aggregated CSI in multiple time units.
  • the embodiment corresponding to FIG. 7 or the embodiment in which the embodiment corresponding to FIG. 7 is combined with the embodiment corresponding to FIG. Turn on or off.
  • the terminal device may need to know whether it should continue to measure CSI in an aggregated method or measure CSI based on a single CSI-RS resource.
  • the terminal equipment needs to measure the CSI information under different radio frequency channels for the base station to decide whether to open or close the radio frequency channel.
  • the change of the antenna port is shown in FIG. 9.
  • the diagonal lines in different directions in Fig. 9 indicate different antenna polarization directions, and each antenna corresponds to a radio frequency channel.
  • the opening or closing of the radio frequency channel is sudden and may not be a periodic operation. Therefore, when performing CSI measurement, a non-periodic trigger is required to notify the terminal of which antenna port CSI information should be measured.
  • the terminal device needs to know whether to continue to measure CSI using the aggregation method or to measure CSI based on a single CSI-RS resource.
  • the network device may send the fourth indication information to the terminal device for activating the aggregation measurement or "deactivating" (that is, disabling the aggregation measurement) aggregation measurement.
  • a new field can be introduced in the DCI signaling to activate or "deactivate" the aggregate measurement, as shown in Table 2.
  • the terminal device When AggreationTriggerFlag is configured as 0, the terminal device will not perform aggregation measurement of multiple CSI-RS resources, and directly perform CSI measurement based on the closest CSI-RS resource.
  • the CSI that is fed back is also information obtained by measuring a CSI-RS resource.
  • AggreationTriggerFlag When AggreationTriggerFlag is configured to 1, the terminal device will measure the aggregated CSI based on multiple CSI-RS resources, and feed back the aggregated CSI to the network device.
  • the network device may choose to activate part of the CSI-RS resources used for aggregation to measure CSI.
  • the network device may send fifth indication information to the terminal device for activating part of the CSI-RS resource or deactivating part of the CSI-RS resource to perform aggregation measurement.
  • N CSI-RS resources configured in advance for aggregation measurement, and only N1 of them are activated or deactivated, and N1 is less than or equal to N.
  • a new field can be introduced in the DCI signaling or the redundant bits of an existing field can be used to activate the aggregated measured CSI-RS resource or "deactivate" (that is, the aggregated measurement is not enabled) the aggregated measured CSI -RS resources.
  • One method is to use a bitmap to indicate the CSI-RS resources to be activated or "deactivated”. For example, if N CSI-RS resources are pre-configured for aggregate measurement, then N bits are used to indicate the status of the corresponding CSI-RS resources. When the value of the first bit is 0, it means that the first CSI-RS resource is "deactivated", and when the value of the first bit is 1, it means that the first CSI-RS resource is activated.
  • the bit at each position indicates the status of the corresponding CSI-RS resource.
  • a numbering rule is that the N CSI-RS resources are sorted from low to high according to the index of the CSI-RS resource.
  • the CSI-RS resource with the lowest index corresponds to the first bit position, and the CSI-RS resource with the highest index corresponds to the first bit position.
  • the Nth bit position is the N CSI-RS resources sorted from low to high according to the index of the CSI-RS resource.
  • the network device may determine whether the CSI content fed back by the terminal device is obtained based on aggregated CSI-RS measurement or a single CSI-RS measurement based on the configuration of RRC signaling and DCI signaling.
  • the dynamic change of the antenna port can be adapted. For example, when the antenna port is reduced from 32 to 16, one of the aggregated CSI-RS resources can be directly used for measurement. When the antenna port increases from 16 to 32, the aggregated two or more CSI-RS resources can be used for measurement. It avoids multiple and repeated configuration of CSI-RS resources of different antenna ports, as well as corresponding measurement and feedback information.
  • the device for measuring channel state information in the embodiment of the present application includes a receiving module 1001 and a processing module 1002.
  • the receiving module is configured to receive configuration information from the network device, the configuration information includes first indication information and second indication information; the first indication information is used to indicate K channel measurement signal resources, where K is greater than or equal to 2;
  • the second indication information is used to: instruct the terminal equipment to measure aggregated CSI according to the N channel measurement signal resources; N is less than or equal to K; the processing module is used to measure the N channel measurement signal resources according to the configuration information, and according to the N measurements
  • the aggregated CSI is calculated; the aggregated CSI is the CSI of M antenna ports, and M is the sum of the number of antenna ports of the N channel measurement signal resources.
  • N is less than K
  • the second indication information includes: indexes of N channel measurement signal resources among the K channel measurement signal resources, and indication information used to indicate aggregate measurement CSI.
  • the second indication information is information that enables feedback of aggregated CSI
  • the apparatus further includes: a sending module, configured to send aggregated CSI to the network device according to the second indication information.
  • the processing module is specifically used to calculate the aggregated CSI using the following information: the channel corresponding to the N multi-antenna port resources, the weight coefficient on the receiving antenna of the terminal device, and the measured value obtained by the terminal device. Precoding, interference covariance matrix and noise variance.
  • the configuration information also includes: third indication information, used to instruct the terminal device to measure aggregated CSI in multiple time units; wherein, part of the resources in the multiple time units are used for the terminal device to measure aggregation CSI, the remaining resources in multiple time units are used for other devices to measure CSI.
  • the third indication information includes a time unit offset parameter.
  • the third indication information includes: one or more time units, and a time unit offset parameter corresponding to each time unit.
  • the third indication information includes: indication information for indicating periodic measurement.
  • the receiving module is further configured to receive fourth indication information from the network device, and the fourth indication information is used to activate or deactivate aggregate measurement.
  • the receiving module is configured to receive fifth indication information from the network device, the fifth indication information is used to activate or deactivate N1 channel measurement signal resources of the aggregate measurement, and N1 is less than or equal to N .
  • the sending module is further configured to send the CSI corresponding to one or more of the N channel measurement signal resources to the network device.
  • the device for measuring channel state information in the embodiment of the present application includes a processing module 1101 and a sending module 1102.
  • the processing module is used to generate configuration information, the configuration information includes first indication information and second indication information; the first indication information is used to indicate K channel measurement signal resources, K is greater than or equal to 2; the second indication information is used Yu: Instructs the terminal device to measure aggregated CSI according to N channel measurement signal resources; N is less than or equal to K; and the sending module is used to send configuration information to the terminal device.
  • N is less than K
  • the second indication information includes: indexes of N channel measurement signal resources among the K channel measurement signal resources, and indication information used to indicate aggregate measurement CSI.
  • the second indication information is information that enables feedback of aggregated CSI
  • the apparatus further includes: a receiving module for receiving aggregated CSI from terminal equipment; aggregated CSI is CSI of M antenna ports , M is the sum of the number of antenna ports of N channel measurement signal resources.
  • the configuration information also includes: third indication information, used to instruct the terminal device to measure aggregated CSI in multiple time units; wherein, part of the resources in the multiple time units are used for the terminal device to measure aggregation CSI, the remaining resources in multiple time units are used for other devices to measure CSI.
  • the third indication information includes a time unit offset parameter.
  • the third indication information includes: one or more time units, and a time unit offset parameter corresponding to each time unit.
  • the third indication information includes: used to indicate that channel measurement signal resources in multiple periods should be aggregated and measured.
  • the apparatus further includes: the network device closes the radio frequency channel that does not transmit the orthogonal frequency division multiplexing OFDM symbol.
  • the sending module is further configured to send fourth indication information to the terminal device, and the fourth indication information is used to activate or deactivate aggregated measurement.
  • the sending module is also used to send fifth indication information to the terminal device.
  • the fifth indication information is used to activate or deactivate N1 channel measurement signal resources of the aggregate measurement, and N1 is less than or equal to N .
  • the receiving module is configured to receive CSI corresponding to one or more multi-channel measurement signal resources among the N channel measurement signal resources.
  • FIG. 12 is a schematic diagram of the hardware structure of a communication device provided by an embodiment of the application.
  • the communication device 12 includes: a memory 121, a processor 122, and a communication interface 123, where the memory 121, the processor 122, and the communication interface 123 can communicate; for example, the memory 121, the processor 122, and the communication interface 123 may communicate via a communication bus 124, the memory 121 is used to store a computer program, and the processor 122 executes the computer program to implement the method shown in the embodiment shown in FIG. 4 or FIG.
  • the communication interface 123 may also include a transmitter and/or a receiver.
  • the foregoing processor may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (digital signal processors, DSP), application specific integrated circuits (ASICs). )Wait.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the steps of the method disclosed in combination with the embodiments of the present application may be directly embodied as being executed and completed by a hardware processor, or executed and completed by a combination of hardware and software modules in the processor.
  • An embodiment of the present application provides a computer-readable storage medium, where the computer-readable storage medium is used to store a computer program, and the computer program is used to implement the method shown in the embodiment shown in FIG. 4 or FIG. 7.
  • An embodiment of the present application also provides a communication system, which includes the device for measuring channel state information as described in FIG. 10 and the device for measuring channel state information as described in FIG. 11.
  • the embodiments of the present application also provide a system chip, which is used to support the communication device to implement the functions shown in the embodiments of the present application (for example, a terminal device receives configuration information from a network device, and the configuration information includes the first instruction information and the first instruction information).
  • the first indication information is used to indicate K channel measurement signal resources, and K is greater than or equal to 2;
  • the second indication information is used to indicate the terminal equipment to measure aggregated CSI according to N channel measurement signal resources; N is less than or Equal to K;
  • the terminal device measures the N channel measurement signal resources according to the configuration information, and calculates the aggregate CSI according to the N measurement results;
  • the aggregate CSI is the CSI of the M antenna ports, and M is the N channel measurement signal resources
  • the chip is specifically used in a chip system, and the chip system may be composed of a chip, or may include a chip and other discrete devices.
  • the chip in the first device implements the above method, the chip includes a processing unit.
  • the chip may also include a communication unit.
  • the processing unit may be, for example, a processor.
  • the communication unit For example, it can be an input/output interface, a pin, or a circuit.
  • the processing unit performs all or part of the actions performed by each processing module in the embodiments of the present application, and the communication unit can perform corresponding receiving or sending actions, for example, receiving configuration signaling sent by a network device.
  • the processing module of the receiving device in the embodiment of the present application may be the processing unit of the chip, and the receiving module or the sending module of the control device is the communication unit of the chip.
  • These computer program instructions can be provided to the processing unit of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing equipment to generate a machine, so that the instructions executed by the processing unit of the computer or other programmable data processing equipment can be used to generate It is a device that realizes the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.
  • These computer program instructions can also be stored in a computer-readable memory that can guide a computer or other programmable data processing equipment to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction device.
  • the device implements the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.
  • These computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operation steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so as to execute on the computer or other programmable equipment.
  • the instructions provide steps for implementing the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

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Abstract

本申请实施例提供一种信道状态信息测量的方法和装置，包括：终端设备接收来自网络设备的配置信息，配置信息包括第一指示信息和第二指示信息；第一指示信息用于：指示K个信道测量信号资源，K大于或等于2；第二指示信息用于：指示终端设备根据N个信道测量信号资源测量聚合的CSI；N小于或等于K；终端设备根据配置信息对N个信道测量信号资源进行测量，以及根据N个测量结果计算得到聚合的CSI。本申请实施例通过对多个信道测量信号资源的聚合测量，可以减少在进行CSI测量时所占的时域符号数，有利于网络设备利用时域符号关断功能来减少网络侧能耗，为降低网络设备耗电量提供可能。

Description

信道状态信息测量的方法和装置 技术领域
本申请涉及通信技术领域，尤其涉及一种信道状态信息(channel state information，CSI)测量的方法和装置。
背景技术
在无线通信系统中，基站根据CSI为终端设备分配时频资源，CSI由终端设备根据基站发送的参考信号进行测量并反馈给基站，CSI包括秩指示(Rank indicator，RI)，预编码指示(precoding matrix indicator，PMI),信道质量指示(channel quality indicator,CQI)等。在CSI测量过程中，终端设备可以根据基站发送的信道状态信息参考信号(channel state information reference signal，CSI-RS)测量当前时刻的信道质量，然后反馈给基站。
在CSI测量中，通常支持多天线端口的CSI测量，为了测量基站每个天线端口上的信道，CSI-RS端口数通常会配置成与天线端口数一致。CSI-RS端口数越多，意味着基站的射频通道数越多，并行传输多流数据的能力越强。在大规模阵列天线技术中，射频通道数可以达到32或64或更多。
然而，虽然CSI测量中配置的端口数多能有效地提升系统容量，但CSI测量中配置的端口数多时基站耗电量较大，运营成本较高。
发明内容
本申请提供一种信道状态信息测量的方法和装置，为降低网络设备耗电量提供可能。
本申请实施例第一方面提供一种信道状态信息测量的方法，包括：
终端设备接收来自网络设备的配置信息，配置信息包括第一指示信息和第二指示信息；第一指示信息用于：指示K个信道测量信号资源，K大于或等于2；第二指示信息用于：指示终端设备根据N个信道测量信号资源测量聚合的CSI；N小于或等于K；终端设备根据配置信息对N个信道测量信号资源进行测量，以及根据N个测量结果计算得到聚合的CSI；聚合的CSI为M个天线端口的CSI，M为N个信道测量信号资源的天线端口数之和。通过对多个信道测量信号资源的聚合测量，可以减少在进行CSI测量时信道测量信号资源所占的时域符号数，有利于网络设备利用时域符号关断功能来减少网络侧能耗，为降低网络设备耗电量提供可能。
在一种可能的设计中，N小于K，第二指示信息包括：K个信道测量信号资源中的N个信道测量信号资源的索引，以及用于指示聚合测量CSI的指示信息。这样，就可以根据N个信道测量信号资源的索引，获取到N个信道测量信号资源，已用于聚合测量CSI。
在一种可能的设计中，N等于K，第二指示信息为使能反馈聚合的CSI的信息， 方法还包括：终端设备根据第二指示信息向网络设备发送聚合的CSI。这样，网络设备可以根据终端设备反馈的聚合的CSI进行资源调度等。
在一种可能的设计中，终端设备根据N个测量结果计算得到聚合的CSI，包括：终端设备利用下述信息计算聚合的CSI：N个多天线端口资源对应的信道、终端设备接收天线上的权重系数、终端设备测量得到的测量得到的预编码、干扰协方差矩阵和噪声的方差。
在一种可能的设计中，配置信息中还包括：第三指示信息，用于指示终端设备在多个时间单元中测量聚合的CSI；其中，多个时间单元中部分资源用于终端设备测量聚合的CSI，多个时间单元中的剩余资源用于其他设备测量CSI。这样，可以充分利用各时间单元的时域符号，进而可以减少时域符号数，为降低基站能耗提供可能。
在一种可能的设计中，第三指示信息包括时间单元偏移参数。
在一种可能的设计中，第三指示信息包括：一个或多个时间单元，以及各时间单元对应的时间单元偏移参数。
在一种可能的设计中，第三指示信息包括：用于指示周期性测量的指示信息。
在一种可能的设计中，终端设备接收来自网络设备的第四指示信息，第四指示信息用于激活聚合测量或去激活聚合测量。
在一种可能的设计中，终端设备接收来自网络设备的第五指示信息，第五指示信息用于激活聚合测量或去激活聚合测量的N1个信道测量信号资源，N1小于或等于N。这样，可以适应天线端口的动态变化，避免了多次、重复配置不同天线端口的信道测量信号资源，以及相应的测量和反馈信息，节约配置资源。
在一种可能的设计中，终端设备向网络设备发送N个信道测量信号资源中的一个或多个信道测量信号资源对应的CSI。这样，可以用于网络设备在后续资源调度时作为参考，实现更为灵活的资源调度。
本申请实施例第二方面提供一种信道状态信息测量的方法，包括：
网络设备生成配置信息，配置信息包括第一指示信息和第二指示信息；第一指示信息用于：指示K个信道测量信号资源，K大于或等于2；第二指示信息用于：指示终端设备根据N个信道测量信号资源测量聚合的CSI；N小于或等于K；网络设备向终端设备发送配置信息。
在一种可能的设计中，N小于K，第二指示信息包括：K个信道测量信号资源中的N个信道测量信号资源的索引，以及用于指示聚合测量CSI的指示信息。
在一种可能的设计中，N小于K，第二指示信息为使能反馈聚合的CSI的信息，方法还包括：网络设备接收来自终端设备的聚合的CSI；聚合的CSI为M个天线端口的CSI，M为N个信道测量信号资源的天线端口数之和。
在一种可能的设计中，配置信息中还包括：第三指示信息，用于指示终端设备在多个时间单元中测量聚合的CSI；其中，多个时间单元中部分资源用于终端设备测量聚合的CSI，多个时间单元中的剩余资源用于其他设备测量CSI。
在一种可能的设计中，第三指示信息包括时间单元偏移参数。
在一种可能的设计中，第三指示信息包括：一个或多个时间单元，以及各时间单元对应的时间单元偏移参数。
在一种可能的设计中，第三指示信息包括：用于指示将多个周期内的信道测量信号资源进行聚合测量。
在一种可能的设计中，方法还包括：网络设备关闭不发送正交频分复用OFDM符号的射频通道。
在一种可能的设计中，网络设备向终端设备发送第四指示信息，第四指示信息用于激活聚合测量或去激活聚合测量。
在一种可能的设计中，网络设备向终端设备发送第五指示信息，第五指示信息用于激活聚合测量或去激活聚合测量的N1个信道测量信号资源，N1小于或等于N。
在一种可能的设计中，网络设备接收N个信道测量信号资源中的一个或多个多信道测量信号资源对应的CSI。
本申请实施例第三方面提供一种信道状态信息测量的装置，应用于终端设备，包括：接收模块，用于接收来自网络设备的配置信息，配置信息包括第一指示信息和第二指示信息；第一指示信息用于：指示K个信道测量信号资源，K大于或等于2；第二指示信息用于：指示终端设备根据N个信道测量信号资源测量聚合的CSI；N小于或等于K；处理模块，用于根据配置信息对N个信道测量信号资源进行测量，以及根据N个测量结果计算得到聚合的CSI；聚合的CSI为M个天线端口的CSI，M为N个信道测量信号资源的天线端口数之和。
在一种可能的设计中，N小于K，第二指示信息包括：K个信道测量信号资源中的N个信道测量信号资源的索引，以及用于指示聚合测量CSI的指示信息。
在一种可能的设计中，N小于K，第二指示信息为使能反馈聚合的CSI的信息，装置还包括：发送模块，用于根据第二指示信息向网络设备发送聚合的CSI。
在一种可能的设计中，处理模块具体用于：利用下述信息计算聚合的CSI：N个多天线端口资源对应的信道、终端设备接收天线上的权重系数、终端设备测量得到的测量得到的预编码、干扰协方差矩阵和噪声的方差。
在一种可能的设计中，配置信息中还包括：第三指示信息，用于指示终端设备在多个时间单元中测量聚合的CSI；其中，多个时间单元中部分资源用于终端设备测量聚合的CSI，多个时间单元中的剩余资源用于其他设备测量CSI。
在一种可能的设计中，第三指示信息包括时间单元偏移参数。
在一种可能的设计中，第三指示信息包括：一个或多个时间单元，以及各时间单元对应的时间单元偏移参数。
在一种可能的设计中，第三指示信息包括：用于指示周期性测量的指示信息。
在一种可能的设计中，接收模块，还用于接收来自网络设备的第四指示信息，第四指示信息用于激活聚合测量或去激活聚合测量。
在一种可能的设计中，接收模块，用于接收来自网络设备的第五指示信息，第五指示信息用于激活聚合测量或去激活聚合测量的N1个信道测量信号资源，N1小于或等于N。
在一种可能的设计中，发送模块，还用于向网络设备发送N个信道测量信号资源中的一个或多个信道测量信号资源对应的CSI。
本申请实施例第四方面提供一种信道状态信息测量的装置，应用于网络设备，包 括：处理模块，用于生成配置信息，配置信息包括第一指示信息和第二指示信息；第一指示信息用于：指示K个信道测量信号资源，K大于或等于2；第二指示信息用于：指示终端设备根据N个信道测量信号资源测量聚合的CSI；N小于或等于K；发送模块，用于向终端设备发送配置信息。
在一种可能的设计中，N小于K，第二指示信息包括：K个信道测量信号资源中的N个信道测量信号资源的索引，以及用于指示聚合测量CSI的指示信息。
在一种可能的设计中，N小于K，第二指示信息为使能反馈聚合的CSI的信息，装置还包括：接收模块，用于接收来自终端设备的聚合的CSI；聚合的CSI为M个天线端口的CSI，M为N个信道测量信号资源的天线端口数之和。
在一种可能的设计中，配置信息中还包括：第三指示信息，用于指示终端设备在多个时间单元中测量聚合的CSI；其中，多个时间单元中部分资源用于终端设备测量聚合的CSI，多个时间单元中的剩余资源用于其他设备测量CSI。
在一种可能的设计中，第三指示信息包括时间单元偏移参数。
在一种可能的设计中，第三指示信息包括：一个或多个时间单元，以及各时间单元对应的时间单元偏移参数。
在一种可能的设计中，第三指示信息包括：用于指示将多个周期内的信道测量信号资源进行聚合测量。
在一种可能的设计中，装置还包括：网络设备关闭不发送正交频分复用OFDM符号的射频通道。
在一种可能的设计中，发送模块，还用于向终端设备发送第四指示信息，第四指示信息用于激活聚合测量或去激活聚合测量。
在一种可能的设计中，发送模块，还用于向终端设备发送第五指示信息，第五指示信息用于激活聚合测量或去激活聚合测量的N1个信道测量信号资源，N1小于或等于N。
在一种可能的设计中，接收模块，用于接收N个信道测量信号资源中的一个或多个多信道测量信号资源对应的CSI。
本申请实施例第五方面提供一种通信装置，该通信装置可以为终端设备中的芯片或者芯片上系统，包括处理器和接口电路，接口电路用于接收代码指令并传输至处理器；处理器用于运行代码指令，以执行如第一方面或第一方面的任一种可能的设计中的方法。
本申请实施例第六方面提供一种通信装置，该通信装置可以为终端设备中的芯片或者芯片上系统，包括处理器和接口电路，接口电路用于接收代码指令并传输至处理器；处理器用于运行代码指令，以执行如第二方面或第二方面的任一种可能的设计中的方法。
本申请实施例第七方面提供一种计算机可读存储介质，计算机可读存储介质用于存储计算机程序，计算机程序用于实现如第一方面或第一方面的任一种可能的设计中的方法。
本申请实施例第八方面提供一种计算机可读存储介质，计算机可读存储介质用于存储计算机程序，计算机程序用于实现如第二方面或第二方面的任一种可能的设计中 的方法。
本申请实施例第九方面提供一种通信系统，包括第三方面及对应的可行实施方式的装置以及第四方面及对应的可行实施方式装置。
应当理解的是，本申请实施例的第二方面至第九方面与本申请实施例的第一方面的技术方案相对应，各方面及对应的可行实施方式所取得的有益效果相似，不再赘述。
附图说明
图1为本申请实施例提供的信道状态信息测量的方法应用的场景示意图；
图2为通常的状态信息测量的方法的流程示意图；
图3为通常的CSI-RS的时频位置示意图；
图4为本申请实施例提供的一种信道状态信息测量的方法的流程示意图；
图5为两种CSI-RS的时频位置对比的一种示意图；
图6为两种CSI-RS的时频位置对比的另一种示意图；
图7为本申请实施例提供的另一种信道状态信息测量的方法的流程示意图；
图8为基于两个时隙内的CSI-RS资源测量多个终端设备的示意图；
图9为网络设备的天线端口变化示意图；
图10为本申请实施例提供的一种信道状态信息测量的装置的结构示意图；
图11为本申请实施例提供的另一种信道状态信息测量的装置的结构示意图；
图12为本申请实施例提供的通信装置的硬件结构示意图。
具体实施方式
本申请实施例的方法可以应用在长期演进(long term evolution，LTE)中，也可以应用在第五代移动通信(5 Generation，5G)系统中，或者未来的移动通信系统。
图1为本申请实施例提供的通信系统的结构示意图。如图1所示，通信系统可以包括：网络设备01和终端设备021、终端设备022、终端设备023和终端设备024；可以理解，该通信系统中包括的终端设备的数量可以根据实际的应用场景设定，例如包含一个终端设备，或包括多个终端设备，本申请实施例中对此并不作限制。考虑到网络设备01与每个终端设备之间进行CSI测量的过程类似，本申请实施例中以网络设备01与任一终端设备之间进行CSI测量的过程为例进行说明。
本申请实施例中，执行网络设备侧方法的执行主体可以是网络设备，也可以是网络设备中的装置(需要说明的是，在本申请提供的实施例中以网络设备为例进行描述的)。示例性地，网络设备中的装置可以是芯片系统、电路或者模块等，本申请不作限制。
本申请实施例涉及的网络设备可以包括但不限于：基站、发送接收点(transmission reception point，TRxP)。其中，基站：又称为无线接入网(radio access network，RAN)设备，是一种将终端接入到无线网络的设备，可以是全球移动通讯(global system of mobile communication，GSM)或码分多址(code division multiple access，CDMA)中的基站(base transceiver station，BTS)，也可以是宽带码分多址(wideband code division multiple access，WCDMA)中的基站(nodeB，NB)，还可以是长期演进(long term  evolution，LTE)中的演进型基站(evolutional node B，eNB或eNodeB)，或者中继站或接入点，或者未来5G网络中的基站(gNodeB，gNB)等，在此并不限定。
本申请实施例中，执行终端设备(或者称之为终端)侧方法的执行主体可以是终端设备，也可以是终端设备中的装置(需要说明的是，在本申请提供的实施例中以终端设备为例进行描述的)。示例性地，终端设备中的装置可以是芯片系统、电路或者模块等，本申请不作限制。
本申请实施例涉及的终端设备。终端可以是无线终端也可以是有线终端，无线终端可以是指向用户提供语音和/或其他业务数据连通性的设备，具有无线连接功能的手持式设备、或连接到无线调制解调器的其他处理设备。无线终端可以经无线接入网(radio access network，RAN)与一个或多个核心网进行通信，无线终端可以是移动终端，如移动电话(或称为“蜂窝”电话)和具有移动终端的计算机，例如，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，它们与无线接入网交换语言和/或数据。例如，个人通信业务(personal communication service，PCS)电话、无绳电话、会话发起协议(session initiation protocol，SIP)话机、无线本地环路(wireless local loop，WLL)站、个人数字助理(personal digital assistant，PDA)等设备。无线终端也可以称为系统、订户单元(subscriber unit)、订户站(subscriber station)，移动站(mobile station)、移动台(mobile)、远程站(remote station)、远程终端(remote terminal)、接入终端(access terminal)、用户终端(user terminal)、用户代理(user agent)、用户设备(user device or user equipment，UE)，在此不作限定。
本申请实施例所涉及的终端设备或网络设备可以包括硬件层、运行在硬件层之上的操作系统层，以及运行在操作系统层上的应用层。该硬件层包括中央处理器(dentral processing unit，CPU)、内存管理单元(memory management unit，MMU)和内存(也称为主存)等硬件。该操作系统可以是任意一种或多种通过进程(process)实现业务处理的计算机操作系统，例如，Linux操作系统、Unix操作系统、Android操作系统、iOS操作系统或windows操作系统等。该应用层包含浏览器、通讯录、文字处理软件、即时通信软件等应用。
在如图1所示的通信系统中，终端设备可以发送下行数据给终端设备UE1～UE4，同时终端设备UE1～UE4也可以发送上行数据给网络数据。
通常的，在无线通信系统中，按照发送节点和接收节点种类的不同，可以将通信分为不同的类型。例如，将网络设备向终端设备发送信息称为下行(downlink，DL)通信，将终端设备向网络设备发送信息称为上行(uplink，UL)通信。
在第四代(fourth generation,4G)和第五代(Fifth generation,5G)无线通信系统(或称为新无线接入技术(new radio access technology，NR)系统)中，下行有同步信号/广播信道(synchronization signal/physical broadcast channel,SS/PBCH)、信道状态信息参考信号(Channel state information reference signal,CSI-RS)、专用解调参考信号(dedicated demodulation reference signal,DM-RS)以及物理下行控制信道(physical downlink control channel,PDCCH)、物理下行共享信道(physical downlink shared channel，PDSCH)等信号或信道。
基站作为网络设备在为终端分配时频资源时，为了匹配基站和终端之间的信道信 息和干扰信息的变化，需要进行信道状态信息测量(channel state information，CSI),主要包括秩指示(rank indicator，RI)，预编码指示(precoding matrix indicator，PMI),信道质量指示(channel quality indicator,CQI)等。例如，在一种具体的CSI测量过程中，终端根据基站发送的CSI-RS测量当前时刻的信道质量，然后反馈给基站。
示例性的，图2为一种通常的CSI测量的流程示意图。如图2所示，可以包括：
S201：基站通过无线资源控制(radio resource control，RRC)信令配置CSI-RS测量、反馈参数。涉及到的RRC信息单元(information element,IE)主要包括CSI-MeasConfig，CSI-ResourceConfig，CSI-ReportConfig等(具体可以参见3GPP TS38.331)。其中,在CSI-MeasConfig需要配置CSI-RS资源的参数，包括资源索引，端口数，时频位置，时频密度等。在CSI-ReportConfig IE中对反馈内容进行配置，包括CQI,PMI,RI反馈等。
S202：终端根据CSI-RS资源测量配置信息以及CSI反馈内容配置信息，进行CSI测量。
S203：终端通过上行控制信道或上行数据信道反馈CSI内容，包括CQI,PMI,RI等。
S204：基站根据终端反馈的CSI信息进行调度，例如完成时频资源分配，调制与编码策略(modulation and coding scheme,MCS)选择，数据传输块大小选择等。并准备物理下行控制信道(physical downlink control channel，PDCCH)和物理下共享制信道(physical downlink share channel，PDSCH)的发送。其中PDCCH用于指示终端被分配的时频资源信息，PDSCH用于业务数据的发送。
S205：基站向终端发送PDCCH和PDSCH。
S206:终端接收PDCCH和PDSCH，并完成数据解调。
其中，CSI-RS资源的配置信息由RRC层参数CSI-ResourceConfig指示，定义了CSI-RS资源集合，以及CSI-RS资源索引等。CSI-ResourceConfig中各参数的详细说明，可以参见3GPP TS 38.331，在此不再赘述。通过CSI-ResourceConfigId参数，可以区分不同的CSI-ResourceConfig配置信息。
CSI的反馈内容由RRC层参数CSI-ReportConfig IE配置，CSI-ReportConfig IE中各参数的详细说明，可以参见3GPP TS 38.331，在此不再赘述。
需要说明的是，CSI的反馈内容中的CSI-ReportConfig和CSI-RS资源的配置信息的CSI-ResourceConfig相互关联。CSI-ReportConfig中要反馈的内容是基于CSI-ResourceConfig中配置的CSI-RS资源得到的。CSI-ReportConfig和CSI-ResourceConfig均包括CSI-ResourceConfigId，即CSI-ReportConfig通过CSI-ResourceConfigId就可找到对应的CSI-RS资源配置。
此外，具体的CSI-RS资源的时频位置参见TS 3GPP TS 38.212中表7.4.1.5.3-1。当前NR标准，最多支持32天线端口下的CSI测量。下面以32端口为例来描述CSI-RS的时频位置配置，如表1所示。表中CDM-Type，时域符号l 0和l 1，频域位置k 0和k 1，由RRC层参数CSI-RS-ResourceMapping配置。CSI-RS-ResourceMapping IE包含在每一个CSI-RS资源配置中，即NZP-CSI-RS-Resource IE。在NZP-CSI-RS-Resource IE通过参数NZP-CSI-RS-ResourceId来区分不同的CSI-RS资源。CSI-ResourceConfig IE 中指示包括哪些NZP-CSI-RS-ResourceId。
表1:CSI-RS locations within a slot.
Figure PCTCN2020077221-appb-000001
按照上表中CDM8,CDM4,和CDM2的3种配置(分别对应表中行索引16，17，18)，CSI-RS的时频位置如图3所示。图中每个栅格代表一个资源单元RE(resource element)，即一个子载波。
在CSI测量过程中，由于基站配置了多天线，通常支持多天线端口的CSI测量，为了测量基站每个天线端口上的信道，CSI-RS端口数通常会配置成与天线端口数一致。
典型的CSI-RS端口数为2，4，8，16，32。CSI-RS天线端口数越多，意味着基站的射频通道数越多，并行传输多流数据的能力越强。在大规模阵列天线技术中，射频通道数可以达到32或64,CSI-RS天线端口数最多可达到32。
但是虽然CSI测量中配置的端口数多能有效地提升系统容量，但CSI测量中配置的端口数多时基站耗电量较大，运营成本较高。
经分析，在基站的整个耗电量中，射频远端单元(radio remote unit,RRU)占了将近70％～80％。RRU的耗电量随着射频通道数的增加而增加。而通常的在对多个终端设备进行CSI测量时，CSI-RS配置的资源越多，占据的正交频分复用(orthogonal frequency division multiplexing，OFDM)符号数也越多，发送OFDM符号数的射频通道的数量也越多，导致基站的耗电量较大。
基于此，本申请实施例提供的CSI测量中，通过对多个CSI-RS资源的聚合测量，可以减少在进行CSI测量时CSI-RS所占的时域符号数，有利于网络设备利用时域符号关断功能来减少网络侧能耗，为降低网络设备耗电量提供可能。
本申请实施例的CSI测量的方法可以应用于图1所示的应用场景，也可用于其他存在上下通信链路和下行通信链路的通信系统，本申请实施例对此不作具体限定。
本申请实施例中，“至少一个”是指一个或者多个，“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B的情况，其中A,B可以是单数或者复数。字符“/”一般表示前后关联对象是一种“或”的关系。“以下至少一项(个)”或其类似 表达，是指的这些项中的任意组合，包括单项(个)或复数项(个)的任意组合。例如，a,b,或c中的至少一项(个)，可以表示：a,b,c,a-b,a-c,b-c,或a-b-c，其中a,b,c可以是单个，也可以是多个。
本申请实施例中“第一”“第二”“第三”等可以是用于区分说明名词在不同场景的应用，实际应用中可以不包含“第一”“第二”“第三”等，不构成对本申请实施例的限定。
本申请实施例所涉及的信道测量信号资源可以用于指示测量信号的时频位置、天线端口数等。例如，信道测量信号资源可以是CSI-RS资源，等。
本申请实施例所涉及的聚合测量，可以是通过聚合多个低天线端口数的信道测量信号资源来联合测量高天线端口数的CSI。信道测量信号例如可以是CSI-RS或其他的用于信道测量的信号，本申请实施例对此不作具体限定。
本申请实施例所涉及的聚合的CSI，可以是基于聚合测量得到的CSI。以对N个CSI-RS资源聚合测量，得到聚合的CSI为例，聚合的CSI为M个天线端口的CSI，则M为N个CSI-RS资源的天线端口数的和，N大于或等于2。可以理解，本申请实施例中，采用聚合的CSI的定义是为了区分与现有的CSI的区别，便于说明本申请实施例，实际应用中，“聚合的CSI”可能称为“CSI”等，本申请实施例对此不作具体限定。
下面以具体地实施例对本申请的技术方案以及本申请的技术方案如何解决上述技术问题进行详细说明。下面这几个具体的实施例可以独立实现，也可以相互结合，对于相同或相似的概念或过程可能在某些实施例中不再赘述。
图4为本申请实施例提供的一种信道状态信息测量的方法的流程示意图，如图4所示，该方法包括：
S401：网络设备向终端设备发送用于聚合测量的配置信息。
本申请实施例中，配置信息是网络设备生成的，配置信息可以包括第一指示信息和第二指示信息。第一指示信息用于：指示K个信道测量信号资源，K大于或等于2；第二指示信息用于：指示终端设备根据N个信道测量信号资源测量聚合的CSI；N小于或等于K。
第一指示信息可以包括K个信道测量信号资源的配置信息，例如包括信道测量信号资源的索引，端口数，时频位置，时间偏移，周期、非周期发送，等信息的一种或多种。使得基于第一指示信息，终端设备可以获取K个信道测量信号资源，用于后续的聚合测量。
第二指示信息可以是任意的字符、数字等，在配置信息中包括第二指示信息时，可以指示终端设备根据K个信道测量信号资源中的N个信道测量信号资源测量聚合的CSI。
一种可能的实现方式中，N小于K，第二指示信息可以包含所述K个信道测量信号资源中的N个信道测量信号资源的索引，以及用于指示聚合N个信道测量信号资源测量CSI的指示信息。
一种可能的实现方式中，N等于K，第二指示信息可以包含用于指示聚合N个信道测量信号资源测量CSI的指示信息。例如，第二指示信息可以为使能反馈聚合的CSI的信息，在第二指示信息配置为1时，使能反馈基于聚合的CSI-RS资源来测量得到的CSI，具体的CSI包括CQI,PMI,RI等。当第二指示信息配置为0时，则不用反馈基 于聚合测量得到的CSI。
本申请实施例中，第一指示信息和第二指示信息可以是通过一条信令发送的，也可以是通过多条信令发送的，本申请实施例对此不作具体限定。
示例性的，网络设备可以通过RRC信令发送包括第一指示信息和第二指示信息的配置信息。其中，配置信息中可以包括CSI-MeasConfig，CSI-ResourceConfig，CSI-ReportConfig IE等。其中CSI-MeasConfig，CSI-ResourceConfig的配置可沿用通常的方案。在CSI-ReportConfig中，与通常的技术方案不同的是，可以在该参数中配置第一指示信息和第二指示信息。
比如，是在RRC参数CSI-ReportConfig IE中新增字段“用于信道测量的CSI-RS资源聚合指示AggregatedCsiResourcesForChannelMeasurement”和“聚合的CSI反馈使能信息指示AggregatedCsiReportFlag”。
示例性的，下述为CSI-ReportConfig IE中增加AggregatedCsiResourcesForChannelMeasurement和AggregatedCsiReportFlag的RRC信息参数配置示意：
Figure PCTCN2020077221-appb-000002
Figure PCTCN2020077221-appb-000003
其中，AggregatedCsiResourcesForChannelMeasurement字段的取值可以为CSI-ResourceConfigId。CSI-ResourceConfigId与CSI-ResourceConfig IE关联。例如，每一个CSI-ResourceConfig IE中均包含CSI-ResourceConfigId。在CSI-ResourceConfig IE中会指示具体的CSI-RS资源集合,CSI-RS资源集合中包括CSI-RS资源索引，如CSI-RS资源索引NZP-CSI-RS-ResourceId，通过参数NZP-CSI-RS-ResourceI来区分不同的CSI-RS资源。
当AggregatedCsiReportFlag配置为1时，即使能反馈基于聚合的CSI-RS资源来测量得到的CSI信息，具体的CSI信息包括CQI,PMI,RI等。当AggregatedCsiReportFlag配置为0时，则不用反馈。
具体实现中，CSI-RS的时频位置可以由RRC层参数CSI-RS-ResourceMapping配置。CSI-RS-ResourceMapping IE包含在每一个CSI-RS资源配置中，如NZP-CSI-RS-Resource IE。在NZP-CSI-RS-Resource IE通过参数nzp-CSI-RS-ResourceId来区分不同的CSI-RS资源。CSI-ResourceConfig IE中会指示包括哪些nzp-CSI-RS-ResourceId。
可以理解，网络设备还可能采用其他的信令等发送配置信息，第一指示信息和第二指示信息也可以是独立于通常的配置信息的，上述示例性的配置过程中，各参数的名称也可以根据实际的应用替换为其他内容，本申请实施例对此不作具体限定。
在实际通信中，由于每个用户的位置、信道的不同会导致网络设备向终端设备发送的波束方向的不同。在CSI测量时，为了提升波形赋形的增益，CSI-RS上会加权不同的波束方向。因此，在测量多个终端设备时，网络设备可以向不同的终端设备配置不同的CSI-RS资源进行测量。
图5示出了一种采用通常的CSI测量时可能的CSI-RS资源时频位置，以及在CSI-RS资源聚合后可能的CSI-RS资源时频位置的对比图。
其中，图5a为采用通常的CSI测量时可能的CSI-RS资源时频位置示意图，CSI-RS为32天线端口。图5a中示出了两个CSI-RS资源的时频位置，其中每一个栅格表示一个资源单元(Resource element,RE)。如果CSI-RS资源1分给终端1，CSI-RS资源2分给终端2，那么如果要用CSI-RS资源3测量终端3，因为CSI-RS资源1的4个OFDM符号中，只剩16个RE，只能再支持16天线端口的CSI-RS资源，CSI-RS资源3的4个OFDM符号中，只剩16个RE，只能再支持16天线端口的CSI-RS资源，因此只能在下一个时隙测量32天线端口的CSI-RS资源3。即，通常的CSI测量中，测量3个 终端，总共需要12个OFDM符号。
图5b为在CSI-RS资源聚合后可能的CSI-RS资源时频位置的对比图。如果CSI-RS资源1分给终端1，CSI-RS资源2分给终端2，那么如果要用CSI-RS资源3测量终端3，通过配置两个16天线端口的CSI-RS资源(例如CSI-RS4和CSI-RS5)可以聚合成一个32天线端口的CSI-RS资源3，可以将两个16天线端口的CSI-RS资源分别与CSI-RS资源1和CSI-RS资源3共用OFDM符号，使得通过8个OFDM符号可以完成3个终端的CSI测量，节约了OFDM符号数量。
图6示出了另一种采用通常的CSI测量时可能的CSI-RS资源时频位置，以及在CSI-RS资源聚合后可能的CSI-RS资源时频位置的对比图。
其中，图6a为采用通常的CSI测量时可能的CSI-RS资源时频位置示意图，CSI-RS为32天线端口，配置两个32天线端口的CSI-RS资源需要8个OFDM符号。
图6b为在CSI-RS资源聚合后可能的CSI-RS资源时频位置的对比图。通过两个16天线端口的CSI-RS资源聚合，只需6个OFDM符号，即可完成两个32天线端口的CSI测量。
本申请实施例中，利用聚合测量的方法，例如通过两个32天线端口，或者4个16天线端口的CSI-RS资源，或者1个32天线端口的CSI-RS资源和两个16天线端口CSI-RS资源，可以测量64天线端口的CSI信息。而现有技术方案中不支持测量64天线端口或更多的天线端口的CSI信息。
可以理解，利用多个CSI-RS资源聚合测量CSI的例子还比较多，可以根据实际应用场景适应聚合，在此不做一一举例。
进一步的，网络设备可以关闭不发送OFDM符号的射频通道，或者关闭射频通道中的功率放大器(power amplifier,PA),中频，射频单元，滤波器等，则可以减少网络设备的能耗。
S402：终端设备测量聚合的CSI。
本申请实施例中，终端设备可以根据配置信息基于两个或多个CSI-RS资源测量CSI信息，比如根据两个16天线端口的CSI-RS资源，测量32天线端口的CSI信息。又比如，根据两个32天线端口的CSI-RS资源，测量64天线端口的CSI信息，又比如，根据两个16天线端口的CSI-RS资源和两个32天线端口的CSI-RS资源，测量96天线端口的CSI信息，等。
示例性的，终端设备可以利用下述信息计算聚合的CSI：N个多天线端口资源对应的信道、终端设备接收天线上的权重系数、终端设备测量得到的测量得到的预编码、干扰协方差矩阵和噪声的方差。
例如，以图5b中的利用2个16天线端口的CSI-RS资源测量32端口的CSI为例。
假定16天线端口的CSI-RS资源1所对应的信道为H 1，发射功率为p，16天线端口的CSI-RS资源2对应的信道为H 2，发射功率为p，信干噪比的计算过程如下：
基于一个16天线端口的CSI-RS资源1的信号与干扰加噪声比(signal to interference plus noise ratio，SINR)γ 1计算可以满足公式(1)：
Figure PCTCN2020077221-appb-000004
其中w 1为终端接收天线上的权重系数，v 1为测量得到的预编码，I 1为干扰协方差矩阵，σ 2为噪声的方差(即噪声功率)。可以理解，上述公式可以为某一个RE信干噪比，可以为通常的计算SINR的方法。
对于16天线端口的CSI-RS资源2的信干噪比也可以采用16天线端口的CSI-RS资源1的计算方法，在此不再赘述。
进而终端设备可以基于两个16天线端口的CSI-RS资源，计算聚合的CSI，例如，聚合的SINR(γ aggregaed)计算可以满足公式(2)：
Figure PCTCN2020077221-appb-000005
其中w为终端设备接收天线上的权重系数，v为测量得到的预编码，I为干扰协方差矩阵。与公式(1)不同的是，信道是根据两个16天线端口的CSI-RS资源所测量得到信道。且，由于信道的维度发生变化，相应的预编码矩阵v和接收权重系数w均会发生相应的变化。预编码矩阵v的求取也是依赖于聚合的信道[H1H2]，例如，一种方法是可以根据对信道的特征值分解求得特征向量作为预编码，另一种方法是可以用基于码本的方法来获取预编码。
根据每个RE的SINR，可求出每个子带(包括多个连续的RB)的SINR，再通过查CQI表格中每一个调制方式和码率对应的SINR门限，即可确定每个子带的CQI索引。最后，终端设备根据聚合的CSI-RS资源测量得到的CSI，包括RI,PMI,RI等，以及将聚合测量得到的CSI反馈给网络设备。
综上所述，本申请实施例中，采用聚合测量多个信道测量信号资源的方式，可以减少对OFDM符号的占用，有利于网络设备利用时域符号关断功能来减少网络侧能耗，为降低网络设备耗电量提供可能。且通过信道测量信号资源的聚合，可以支持64天线端口或64天线端口以上的CSI测量，有利于提升系统容量，进而能减少数据传输的时间，也能达到基站节能的目的。
可选的，还可以包括：
S403：终端设备向网络设备发送聚合的CSI。
本申请实施例中，终端设备可以基于使能反馈聚合的CSI的指示，向网络设备反馈聚合的CSI。
可选的，终端设备还可以反馈N个信道测量信号资源中的一个或多个多信道测量信号资源对应的CSI。以供网络设备在后续资源调度时作为参考，本申请实施例对此不作具体限定。
S404：网络设备根据终端设备反馈的CSI进行资源调度。
本申请实施例中，网络设备可以基于基站反馈的CSI进行任意形式的资源调度，本申请实施例对此不作具体限定。
示例性的，当网络设备通过RRC信令配置了聚合测量和反馈指示信息时，基站侧假定收到的终端反馈的CSI信息是基于聚合的CSI-RS资源所得到的结果。在发送PDSCH时，PDSCH信道所承载的数据映射到天线端口上所使用的预编码即为公式(2)的预编码，而在MCS选择时，可以基于公式(2)中的SINR所得到的CQI。传输数据映射到每个天线端口上的过程可以满足公式(3)：
Figure PCTCN2020077221-appb-000006
其中，v为基于聚合CSI-RS测量得到的预编码，y (j-1)(i)为经过预编码之前在j-1层映射的数据，
Figure PCTCN2020077221-appb-000007
(i)为经过预编码后在天线端口p ρ-1上映射的数据，j小于等于终端设备反馈的Rank。以图5b为例，v是基于两个16天线端口的CSI-RS资源测量所得。
具体应用中，当网络设备没有配置聚合测量和反馈的指示信息时，网络设备可以沿用已有技术方案使用CSI信息。
S405：网络设备通过PDCCH向终端设备指示DCI信息，通过PDSCH发送数据。
S406：终端设备根据PDCCH携带的DCI解调PDSCH数据。
S405和S406可以基于通常的方法实现，在此不再赘述。
图7为本申请实施例提供的一种信道状态信息测量的方法的流程示意图，如图7所示，该方法包括：
S701：网络设备向终端设备发送用于跨时间单元测量的配置信息。
本申请实施例的时间单元可以为时隙(slot)或子帧等。跨时间单元测量时指CSI的测量是基于两个或两个以上的时间单元内的CSI-RS资源。
需要说明的是，为了便于描述，本申请实施例后续以跨slot为例说明测量CSI的过程。具体应用中，NR中的一个slot包括时域14个OFDM符号，LTE中的一个slot包括7个OFDM符号。
本申请实施例中，配置信息可以包括第三指示信息，第三指示信息用于指示终端设备在多个时间单元中测量CSI。
示例性的，第三指示信息可以包括时间单元偏移参数，则可以指示当前时间单元的信道测量信号资源，以及当前时间单元偏移该时间单元偏移参数的时间单元的信道测量信号资源。
或者，第三指示信息包括：一个或多个时间单元，以及各时间单元对应的时间单元偏移参数。则可以指示任一个或多个时间单元的信道测量信号资源，以及该时间单元偏移该时间单元偏移参数的时间单元的信道测量信号资源。
比如，第三指示信息可以包括时间单元n和时间单元偏移参数t，t为自然数，则可以将两个CSI-RS资源分别配置在时间单元n和时间单元n+t。时间单元的数量可以为一个或多个，任一个时间单元对应的时间单元偏移参数也可以为一个或多个，本申请实施例对此不作具体限定。例如，第三指示信息可以包括时间单元slot n、slot n对应的时间单元偏移参数t，t+2，以及时间单元slot m、slot m对应的时间单元偏移参数k，等，以实现在两个以上的slot配置CSI-RS资源。
本申请实施例中，以时间单元为slot，时间单元偏移参数为时隙偏移参数，信道测量信号资源为CSI-RS资源为例。不同的CSI-RS资源，可以在不同的slot发送，该时隙偏移可以通过CSI-ResourcePeriodicityAndOffset IE指示，具体的，可以如下所示：
Figure PCTCN2020077221-appb-000008
Figure PCTCN2020077221-appb-000009
其中，slots4表示CSI-RS发送的周期为4个slot,具体在4个slot中的哪个slot发，由时隙偏移值确定，即候选的时隙偏移位置为{0，1，2，3}。
当时隙偏移值小于CSI-RS发送周期时，可以直接利用现有的测量CSI的方案。
当时隙偏移值大于CSI-RS发送周期时，假定发送周期为4个slot,在slot n上发送CSI-RS资源1，在slot n+5上发送CSI-RS资源2，但由于周期为4，在slot n+1上也会出会CSI-RS资源2，因而可直接利用slot n和slot n+1上的CSI-RS资源进行聚合测量。
当时隙偏移值等于CSI-RS发送周期时，第三指示信息可以包括：用于指示周期性测量的指示信息。例如可以在CSI-ReportConfig IE中新增一个字段periodNumberForCrossSlotAgrregation来标识是否将周期性地资源进行CSI-RS聚合测量。periodNumberForCrossSlotAgrregation字段地取值可以为正整数，例如取值为2，则表示连续两个周期的CSI-RS资源进行聚合测量，具体可以如下所述：
Figure PCTCN2020077221-appb-000010
Figure PCTCN2020077221-appb-000011
需要说明的是，本申请实施例的CSI的测量是基于两个或多个slot内的CSI-RS资源可以避免一个slot内CSI-RS资源所占时频资源太多无法同时对多个终端设备进行测量。可以减少CSI-RS所占的时域符号数。
示例性的，图8示出了基于两个slot内的CSI-RS资源测量多个终端设备的示意图。
其中，图8a可以为slot n，图8b可以为slot n+1。如果CSI-RS资源1分给终端1，CSI-RS资源2分给终端2，那么如果要用CSI-RS资源3资源终端3，在slot n中无法支持，而slot n+1中，只占用了一个16天线端口CSI-RS 1，则可以指示CSI-RS资源3在slot n+1中与16天线端口CSI-RS 1共用OFDM符号，从而可以不再另外分配4个OFDM符号，即其中，多个时间单元中部分资源用于终端设备测量所述聚合的CSI，多个时间单元中的剩余资源用于其他设备测量CSI，从而可以节约OFDM符号数量。
可以理解，对于一个终端设备，网络设备也可以指示该终端设备基于多个时间单元的CSI-RS资源测量CSI，在此不再赘述。
S702：终端设备跨时间单元测量CSI。
可选的，还可以包括：
S703：终端设备向网络设备发送CSI。
S704：网络设备根据终端设备反馈的CSI进行资源调度。
S705：网络设备通过PDCCH向终端设备指示DCI信息，通过PDSCH发送数据。
S706：终端设备根据PDCCH携带的DCI解调PDSCH数据。
本申请实施例中，S702、S703、S704、S705和S706均可以采用通常的任意方式实现，在此不再赘述。
需要说明的是，图7对应的实施例既可以单独实施，利用跨时间单元测量的方式达到节约OFDM符号的效果，进一步的，网络设备可以关闭不发送OFDM符号的射频通道，或者关闭射频通道中的功率放大器(power amplifier,PA),中频，射频单元，滤波器等，则可以减少网络设备的能耗。
图7对应的实施例也可以与图4对应的实施例结合实施，例如可以指示终端在多个时间单元中测量聚合的CSI。
在图4对应的实施例、图7对应的实施例、或图7对应的实施例与图4对应的实施例结合的实施例的基础上，由于射频通道数可能随着业务负载的变化而动态开启或关闭。终端设备可能需要知道是应该继续用聚合的方法来测量CSI，还是根据单一的CSI-RS资源来测量CSI。
例如，负载高时，可以用更多的射频通道来提高系统容量；而负载低时，可以关掉部分通道来减少基站的能耗。在这种情况下，终端设备需要测量不同射频通道下的CSI信息，以供基站决策射频通道的开启或关闭。
示例性的，天线端口的变化如图9所示。图9中不同方向的斜线表示不同的天线极化方向，每根天线对应一个射频通道。
射频通道的开启或关闭具有突发性，可能不是周期地性操作。因此，在进行CSI测量时，需要经过非周期地触发来通知终端应该测哪些天线端口的CSI信息。
假设初始时网络设备是32天线端口，当关闭16天线端口后，终端设备需要知道是应该继续用聚合的方法来测量CSI，还是根据单一的CSI-RS资源来测量CSI。
针对该问题，一种可能的实现方式中，网络设备可以向终端设备发送第四指示信息，用于激活聚合测量或“去激活”(即不使能聚合测量)聚合测量。
示例性的，可以在DCI信令中引入一个新的字段来激活聚合测量或“去激活”聚合测量，如表2所示。
表2
Figure PCTCN2020077221-appb-000012
当AggreationTriggerFlag配置0时，终端设备将不会进行多个CSI-RS资源的聚合测量，直接根据时间最近的一个CSI-RS资源进行CSI测量。反馈的CSI也是根据一个CSI-RS资源测量所得的信息。当AggreationTriggerFlag配置1时，终端设备将基于多个CSI-RS资源来测量聚合的CSI，并向网络设备反馈聚合的CSI。
一种可能的实现方式中，网络设备可以选择激活部分用于聚合的CSI-RS资源来测量CSI。网络设备可以向终端设备发送第五指示信息，用于激活部分CSI-RS资源或去 激活部分CSI-RS资源来进行聚合测量。例如，预先配置的用于聚合测量的CSI-RS资源为N个，只激活或去激活其中的N1个，N1小于或于等于N。
示例性的，可以在DCI信令中引入一个新的字段或使用已有字段的冗余比特来激活聚合测量的CSI-RS资源或“去激活”(即不使能聚合测量)聚合测量的CSI-RS资源。一种方法是，用bitmap的方式指示要激活或“去激活”的CSI-RS资源。例如，预先配置了N个CSI-RS资源用于聚合测量，则用N比特指示对应CSI-RS资源的状态。当第一个比特值为0时，表示“去激活”第一个CSI-RS资源，当第一个比特值为1时，表示激活第一个CSI-RS资源。以此类推，每一个位置上的比特指示对应的CSI-RS资源的状态。一种编号规则为，将N个CSI-RS资源按CSI-RS资源的索引进行由低到高的排序，索引最低的CSI-RS资源对应第一个比特位置，索引最高的CSI-RS资源对应第N个比特位置。
进一步的，网络设备可以根据RRC信令和DCI信令的配置，可确定终端设备反馈的CSI内容是根据聚合后的CSI-RS测量得到的，还是根据单个CSI-RS测量得到的。
本申请实施例中，可以适应天线端口的动态变化。例如，当天线端口从32减少到16时，可直接利用聚合的CSI-RS资源中的一个资源来测量。当天线端口从16增加到32时，可利用聚合的两个或多个CSI-RS资源来测量。避免了多次、重复配置不同天线端口的CSI-RS资源，以及相应的测量和反馈信息。
参照图10，示出了本申请实施例的一种信道状态信息测量的装置的结构示意图。本申请实施例的信道状态信息测量的装置包括接收模块1001和处理模块1002。其中，接收模块，用于接收来自网络设备的配置信息，配置信息包括第一指示信息和第二指示信息；第一指示信息用于：指示K个信道测量信号资源，K大于或等于2；第二指示信息用于：指示终端设备根据N个信道测量信号资源测量聚合的CSI；N小于或等于K；处理模块，用于根据配置信息对N个信道测量信号资源进行测量，以及根据N个测量结果计算得到聚合的CSI；聚合的CSI为M个天线端口的CSI，M为N个信道测量信号资源的天线端口数之和。
在一种可能的设计中，N小于K，第二指示信息包括：K个信道测量信号资源中的N个信道测量信号资源的索引，以及用于指示聚合测量CSI的指示信息。
在一种可能的设计中，第二指示信息为使能反馈聚合的CSI的信息，装置还包括：发送模块，用于根据第二指示信息向网络设备发送聚合的CSI。
在一种可能的设计中，处理模块具体用于：利用下述信息计算聚合的CSI：N个多天线端口资源对应的信道、终端设备接收天线上的权重系数、终端设备测量得到的测量得到的预编码、干扰协方差矩阵和噪声的方差。
在一种可能的设计中，配置信息中还包括：第三指示信息，用于指示终端设备在多个时间单元中测量聚合的CSI；其中，多个时间单元中部分资源用于终端设备测量聚合的CSI，多个时间单元中的剩余资源用于其他设备测量CSI。
在一种可能的设计中，第三指示信息包括时间单元偏移参数。
在一种可能的设计中，第三指示信息包括：一个或多个时间单元，以及各时间单元对应的时间单元偏移参数。
在一种可能的设计中，第三指示信息包括：用于指示周期性测量的指示信息。
在一种可能的设计中，接收模块，还用于接收来自网络设备的第四指示信息，第四指示信息用于激活聚合测量或去激活聚合测量。
在一种可能的设计中，接收模块，用于接收来自网络设备的第五指示信息，第五指示信息用于激活聚合测量或去激活聚合测量的N1个信道测量信号资源，N1小于或等于N。
在一种可能的设计中，发送模块，还用于向网络设备发送N个信道测量信号资源中的一个或多个信道测量信号资源对应的CSI。
本申请实施例的有益效果可以参照终端设备对应的方法实施例的描述，在此不再赘述。
参照图11，示出了本申请实施例的一种信道状态信息测量的装置的结构示意图。本申请实施例的信道状态信息测量的装置包括处理模块1101和发送模块1102。其中，处理模块，用于生成配置信息，配置信息包括第一指示信息和第二指示信息；第一指示信息用于：指示K个信道测量信号资源，K大于或等于2；第二指示信息用于：指示终端设备根据N个信道测量信号资源测量聚合的CSI；N小于或等于K；发送模块，用于向终端设备发送配置信息。
在一种可能的设计中，N小于K，第二指示信息包括：K个信道测量信号资源中的N个信道测量信号资源的索引，以及用于指示聚合测量CSI的指示信息。
在一种可能的设计中，第二指示信息为使能反馈聚合的CSI的信息，装置还包括：接收模块，用于接收来自终端设备的聚合的CSI；聚合的CSI为M个天线端口的CSI，M为N个信道测量信号资源的天线端口数之和。
在一种可能的设计中，配置信息中还包括：第三指示信息，用于指示终端设备在多个时间单元中测量聚合的CSI；其中，多个时间单元中部分资源用于终端设备测量聚合的CSI，多个时间单元中的剩余资源用于其他设备测量CSI。
在一种可能的设计中，第三指示信息包括时间单元偏移参数。
在一种可能的设计中，第三指示信息包括：一个或多个时间单元，以及各时间单元对应的时间单元偏移参数。
在一种可能的设计中，第三指示信息包括：用于指示将多个周期内的信道测量信号资源进行聚合测量。
在一种可能的设计中，装置还包括：网络设备关闭不发送正交频分复用OFDM符号的射频通道。
在一种可能的设计中，发送模块，还用于向终端设备发送第四指示信息，第四指示信息用于激活聚合测量或去激活聚合测量。
在一种可能的设计中，发送模块，还用于向终端设备发送第五指示信息，第五指示信息用于激活聚合测量或去激活聚合测量的N1个信道测量信号资源，N1小于或等于N。
在一种可能的设计中，接收模块，用于接收N个信道测量信号资源中的一个或多个多信道测量信号资源对应的CSI。
本申请实施例的有益效果可以参照网络设备对应的方法实施例的描述，在此不再赘述。
图12为本申请实施例提供的通信装置的硬件结构示意图。请参见图12，该通信装置12包括：存储器121、处理器122和通信接口123，其中，存储器121、处理器122和通信接口123可以通信；示例性的，存储器121、处理器122和通信接口123可以通过通信总线124通信，所述存储器121用于存储计算机程序，所述处理器122执行所述计算机程序实现上述图4或图7所示实施例所示的方法。
可选的，通信接口123还可以包括发送器和/或接收器。
可选的，上述处理器可以是中央处理单元(central processing unit，CPU)，还可以是其他通用处理器、数字信号处理器(digital signal processor，DSP)、专用集成电路(application specific integrated circuit，ASIC)等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。
本申请实施例提供一种计算机可读存储介质，所述计算机可读存储介质用于存储计算机程序，所述计算机程序用于实现上述图4或图7所示实施例所示的方法。
本申请实施例还一种通信系统，包括如图10所述的信道状态信息测量的装置和如图11所述的信道状态信息测量的装置。
本申请实施例还提供一种系统芯片，该系统芯片用于支持通信装置实现本申请实施例所示的功能(例如，终端设备接收来自网络设备的配置信息，配置信息包括第一指示信息和第二指示信息；第一指示信息用于：指示K个信道测量信号资源，K大于或等于2；第二指示信息用于：指示终端设备根据N个信道测量信号资源测量聚合的CSI；N小于或等于K；终端设备根据配置信息对N个信道测量信号资源进行测量，以及根据N个测量结果计算得到聚合的CSI；聚合的CSI为M个天线端口的CSI，M为N个信道测量信号资源的天线端口数之和等)，该芯片具体用于芯片系统，该芯片系统可以由芯片构成，也可以包括芯片和其他分立器件。当实现上述方法的为第一设备内的芯片时，芯片包括处理单元，进一步的，芯片还可以包括通信单元，所述处理单元例如可以是处理器，当芯片包括通信单元时，所述通信单元例如可以是输入/输出接口、管脚或电路等。处理单元执行本申请实施例中各个处理模块所执行的全部或部分动作，通信单元可执行相应的接收或发送动作，例如，接收网络设备发送的配置信令等。在另一具体的实施例中，本申请实施例中的接收设备的处理模块可以是芯片的处理单元，控制设备的接收模块或发送模块是芯片的通信单元。
本申请实施例是参照根据本申请实施例的方法、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单元以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理单元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。

Claims (29)

  1. 一种信道状态信息测量的方法，其特征在于，包括：
    终端设备接收来自网络设备的配置信息，所述配置信息包括第一指示信息和第二指示信息；所述第一指示信息用于：指示K个信道测量信号资源，K大于或等于2；所述第二指示信息用于：指示所述终端设备根据所述N个信道测量信号资源测量聚合的CSI；N小于或等于K；
    所述终端设备根据所述配置信息对所述N个信道测量信号资源进行测量，以及根据N个测量结果计算得到聚合的CSI；所述聚合的CSI为M个天线端口的CSI，M为所述N个信道测量信号资源的天线端口数之和。
  2. 根据权利要求1所述的方法，其特征在于，所述N小于所述K，所述第二指示信息包括：所述K个信道测量信号资源中的N个信道测量信号资源的索引，以及用于指示聚合测量CSI的指示信息。
  3. 根据权利要求1所述的方法，其特征在于，所述N等于所述K，所述第二指示信息为使能反馈所述聚合的CSI的信息，所述方法还包括：
    所述终端设备根据所述第二指示信息向所述网络设备发送所述聚合的CSI。
  4. 根据权利要求1-3任一项所述的方法，其特征在于，所述终端设备根据N个测量结果计算得到聚合的CSI，包括：
    所述终端设备利用下述信息计算聚合的CSI：所述N个多天线端口资源对应的信道、所述终端设备接收天线上的权重系数、所述终端设备测量得到的测量得到的预编码、干扰协方差矩阵和噪声的方差。
  5. 根据权利要求1-4任一项所述的方法，其特征在于，所述配置信息中还包括：第三指示信息，用于指示所述终端设备在多个时间单元中测量所述聚合的CSI；其中，所述多个时间单元中部分资源用于所述终端设备测量所述聚合的CSI，所述多个时间单元中的剩余资源用于其他设备测量CSI。
  6. 根据权利要求1-5任一项所述的方法，其特征在于，还包括：
    所述终端设备接收来自所述网络设备的第四指示信息，所述第四指示信息用于激活聚合测量或去激活聚合测量。
  7. 根据权利要求1-5任一项所述的方法，其特征在于，还包括：
    所述终端设备接收来自所述网络设备的第五指示信息，所述第五指示信息用于激活聚合测量或去激活聚合测量的N1个信道测量信号资源，N1小于或等于N。
  8. 一种信道状态信息测量的方法，其特征在于，包括：
    网络设备生成配置信息，所述配置信息包括第一指示信息所述配置信息包括第一指示信息和第二指示信息；所述第一指示信息用于：指示K个信道测量信号资源，K大于或等于2；所述第二指示信息用于：指示所述终端设备根据所述N个信道测量信号资源测量聚合的CSI；N小于或等于K；
    所述网络设备向所述终端设备发送所述配置信息。
  9. 根据权利要求8所述的方法，其特征在于，所述N小于所述K，所述第二指示信息包括：所述K个信道测量信号资源中的N个信道测量信号资源的索引，以及用于指示聚合测量CSI的指示信息。
  10. 根据权利要求8所述的方法，其特征在于，所述N等于所述K，所述第二指示信息为使能反馈所述聚合的CSI的信息，所述方法还包括：
    所述网络设备接收来自所述终端设备的聚合的CSI；所述聚合的CSI为M个天线端口的CSI，M为所述N个信道测量信号资源的天线端口数之和。
  11. 根据权利要求8-10任一项所述的方法，其特征在于，所述配置信息中还包括：第三指示信息，用于指示所述终端设备在多个时间单元中测量所述聚合的CSI；其中，所述多个时间单元中部分资源用于所述终端设备测量所述聚合的CSI，所述多个时间单元中的剩余资源用于其他设备测量CSI。
  12. 根据权利要求8-11任一项所述的方法，其特征在于，还包括：
    所述网络设备向所述终端设备发送第四指示信息，所述第四指示信息用于激活聚合测量或去激活聚合测量。
  13. 根据权利要求8-11任一项所述的方法，其特征在于，还包括：
    所述网络设备向所述终端设备发送第五指示信息，所述第五指示信息用于激活聚合测量或去激活聚合测量的N1个信道测量信号资源，N1小于或等于N。
  14. 一种信道状态信息测量的装置，其特征在于，应用于终端设备，包括：
    接收模块，用于接收来自网络设备的配置信息，所述配置信息包括第一指示信息和第二指示信息；所述第一指示信息用于：指示K个信道测量信号资源，K大于或等于2；所述第二指示信息用于：指示所述终端设备根据所述N个信道测量信号资源测量聚合的CSI；N小于或等于K；
    处理模块，用于根据所述配置信息对所述N个信道测量信号资源进行测量，以及根据N个测量结果计算得到聚合的CSI；所述聚合的CSI为M个天线端口的CSI，M为所述N个信道测量信号资源的天线端口数之和。
  15. 根据权利要求14所述的装置，其特征在于，所述N小于所述K，所述第二指示信息包括：所述K个信道测量信号资源中的N个信道测量信号资源的索引，以及用于指示聚合测量CSI的指示信息。
  16. 根据权利要求14所述的装置，其特征在于，所述N等于所述K，所述第二指示信息为使能反馈所述聚合的CSI的信息，所述装置还包括：
    发送模块，用于根据所述第二指示信息向所述网络设备发送所述聚合的CSI。
  17. 根据权利要求14-16任一项所述的装置，其特征在于，所述处理模块具体用于：利用下述信息计算聚合的CSI：所述N个多天线端口资源对应的信道、所述终端设备接收天线上的权重系数、所述终端设备测量得到的测量得到的预编码、干扰协方差矩阵和噪声的方差。
  18. 根据权利要求14-17任一项所述的装置，其特征在于，所述配置信息中还包括：第三指示信息，用于指示所述终端设备在多个时间单元中测量所述聚合的CSI；其中，所述多个时间单元中部分资源用于所述终端设备测量所述聚合的CSI，所述多个时间单元中的剩余资源用于其他设备测量CSI。
  19. 根据权利要求14-18任一项所述的装置，其特征在于：
    所述接收模块，还用于接收来自所述网络设备的第四指示信息，所述第四指示信息用于激活聚合测量或去激活聚合测量。
  20. 根据权利要求14-18任一项所述的装置，其特征在于，还包括：
    接收模块，用于接收来自所述网络设备的第五指示信息，所述第五指示信息用于激活聚合测量或去激活聚合测量的N1个信道测量信号资源，N1小于或等于N。
  21. 一种信道状态信息测量的装置，其特征在于，应用于网络设备，包括：
    处理模块，用于生成配置信息，所述配置信息包括第一指示信息所述配置信息包括第一指示信息和第二指示信息；所述第一指示信息用于：指示K个信道测量信号资源，K大于或等于2；所述第二指示信息用于：指示所述终端设备根据所述N个信道测量信号资源测量聚合的CSI；N小于或等于K；
    发送模块，用于向所述终端设备发送所述配置信息。
  22. 根据权利要求21所述的装置，其特征在于，所述N小于所述K，所述第二指示信息包括：所述K个信道测量信号资源中的N个信道测量信号资源的索引，以及用于指示聚合测量CSI的指示信息。
  23. 根据权利要求21所述的装置，其特征在于，所述N等于所述K，所述第二指示信息为使能反馈所述聚合的CSI的信息，所述装置还包括：
    接收模块，用于接收来自所述终端设备的聚合的CSI；所述聚合的CSI为M个天线端口的CSI，M为所述N个信道测量信号资源的天线端口数之和。
  24. 根据权利要求21-23任一项所述的装置，其特征在于，所述配置信息中还包括：第三指示信息，用于指示所述终端设备在多个时间单元中测量所述聚合的CSI；其中，所述多个时间单元中部分资源用于所述终端设备测量所述聚合的CSI，所述多个时间单元中的剩余资源用于其他设备测量CSI。
  25. 根据权利要求21-24任一项所述的装置，其特征在于：
    所述发送模块，还用于向所述终端设备发送第四指示信息，所述第四指示信息用于激活聚合测量或去激活聚合测量。
  26. 根据权利要求21-24任一项所述的装置，其特征在于，还包括：
    所述发送模块，还用于向所述终端设备发送第五指示信息，所述第五指示信息用于激活聚合测量或去激活聚合测量的N1个信道测量信号资源，N1小于或等于N。
  27. 一种通信装置，其特征在于，包括处理器和接口电路，所述接口电路用于接收代码指令并传输至所述处理器；所述处理器用于运行所述代码指令，以执行如权利要求1-7任一项所述的方法，或执行如权利要求8-13任一项所述的方法。
  28. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质用于存储计算机程序，所述计算机程序用于实现如权利要求1-7任一项所述的方法，或实现如权利要求8-13任一项所述的方法。
  29. 一种通信系统，其特征在于，包括如权利要求14-20任一项所述的信道状态信息测量的装置，以及如权利要求21-26任一项所述的信道状态信息测量的装置。
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WO2024083075A1 (zh) * 2022-10-18 2024-04-25 维沃移动通信有限公司 信道状态信息csi上报方法、装置、终端及介质

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