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WO2018127149A1 - Procédé, appareil et système de traitement d'informations d'état de canal - Google Patents

Procédé, appareil et système de traitement d'informations d'état de canal Download PDF

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Publication number
WO2018127149A1
WO2018127149A1 PCT/CN2018/071634 CN2018071634W WO2018127149A1 WO 2018127149 A1 WO2018127149 A1 WO 2018127149A1 CN 2018071634 W CN2018071634 W CN 2018071634W WO 2018127149 A1 WO2018127149 A1 WO 2018127149A1
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WIPO (PCT)
Prior art keywords
channel state
measurement
information
state information
resource
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
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PCT/CN2018/071634
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English (en)
Chinese (zh)
Inventor
梁津垚
王婷
李元杰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201710687469.0A external-priority patent/CN108282212B/zh
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to EP18736359.3A priority Critical patent/EP3547745B1/fr
Publication of WO2018127149A1 publication Critical patent/WO2018127149A1/fr
Priority to US16/504,264 priority patent/US11082986B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method, apparatus, and system for channel state information measurement.
  • Next generation mobile communication systems require large capacity and high quality data transmission.
  • Multiple input multiple output (MIMO) technology is considered to be one of the key technologies for realizing high-speed data transmission in the future. It has a broad range in the fourth generation (4G) and fifth generation (5G) mobile communication systems.
  • a plurality of transmit antennas of a conventional centralized MIMO system are concentrated on a base station (BS) side. Different from centralized MIMO, multiple transmit antennas of distributed MIMO systems are distributed in different geographical locations, and each pair of transceiver links is more independent, with large capacity, low power consumption, better coverage, and low body.
  • Advantages such as electromagnetic damage are considered to be one of the alternatives for future wireless communication systems.
  • CoMP coordinated multipoint transmission
  • Multiple neighboring cells in CoMP technology can jointly process or coordinate communication with edge users to avoid interference and improve edge user throughput.
  • Downlink CoMP technologies mainly include joint transmission (JT), coordinated scheduling and beamforming (CS/CB), and dynamic point selection/dynamic point blanking (DPS/DPB).
  • JT joint transmission
  • CS/CB coordinated scheduling and beamforming
  • DPS/DPB dynamic point selection/dynamic point blanking
  • the serving base station needs to know the downlink channel conditions of each station to the target user equipment.
  • CSI-RS channel state information reference signal
  • the UE estimates the channel by measuring the specific CSI-RS, and obtains the CSI and reports it to the serving base station through a physical uplink control channel (PUCCH).
  • the serving base station refers to a base station to which the serving cell belongs.
  • the reported CSI information may include a channel quality indicator (CQI), a rank indicator (RI), and a combination of one or more of precoding matrix indicator (PMI) information.
  • CQI channel quality indicator
  • RI rank indicator
  • PMI precoding matrix indicator
  • the base station may indicate the UE by configuring high layer signaling, such as radio resource control (RRC) signaling.
  • RRC radio resource control
  • the user equipment needs to report multiple CSIs to the network device, so that the network device determines and decides specific cooperation and scheduling according to the multiple CSIs. Therefore, a new solution is needed. How to trigger and escalate the problem of multiple CSIs.
  • Embodiments of the present invention provide a method, an apparatus, a communication system, and a terminal for measuring channel state information, so as to meet different requirements for channel state information measurement in some different scenarios of multi-point cooperation in a future network.
  • an embodiment of the present invention provides a method for measuring channel state information, including:
  • the user equipment receives configuration information for measurement of channel state information from the wireless network device, the configuration information including information of resources for channel state information measurement and indicating measurement attribute information of the resource, the measurement attribute including channel measurement , or, X interference measurements, or channel measurements and X interference measurements, where X is an integer greater than or equal to 1;
  • the user equipment performs measurement of channel state information according to the configuration information and feeds back the channel state information.
  • the type of interference measurement can be greater than 1, the measurement behavior on the UE side can be more clearly indicated as needed.
  • an embodiment of the present invention provides a method for measuring channel state information, including:
  • the first wireless network device transmits configuration information for channel state information measurement to the user equipment, the configuration information including information of resources for channel state information measurement and indicating measurement attribute information of the resource, the measurement attribute including a channel Measurement, or, X interference measurement, or channel measurement and X interference measurement, where X is an integer greater than or equal to 1;
  • the second wireless network device receives channel state information from the user equipment, the channel state information being derived based on the configuration information, wherein the second wireless network device and the first wireless network device are the same or different.
  • the information of the resource for channel state information measurement includes information of a resource usable for channel measurement and information of a resource used for interference measurement, the configuration information further including second indication information For indicating the number M of resources actually used for channel measurement, where M is an integer not less than 1; or,
  • the information of the resource for channel state information measurement includes information of resources for channel measurement and information of resources available for interference measurement, and the configuration information further includes third indication information for indicating actual use for interference measurement Number of resources N, where N is an integer not less than 0; or,
  • the information of the resource for channel state information measurement includes information of resources available for channel measurement and information of resources available for interference measurement, the configuration information further including second indication information and third indication information, and second indication
  • the information is used to indicate the number M of resources actually used for channel measurement
  • the third indication information is used to indicate the number N of resources actually used for interference measurement, where M is an integer not less than 1, and N is not less than 0. The integer.
  • the measuring, by the user equipment, the channel state information according to the configuration information, and feeding back the channel state information includes:
  • performing measurement of channel state information for the resource actually used for channel measurement includes: performing channel measurement on the resource actually used for channel measurement.
  • performing measurement of channel state information for the resource actually used for channel measurement includes: performing channel measurement on the resource actually used for channel measurement and excluding the resource available for channel state information measurement Resources other than M resources are used for interference measurement.
  • the measuring, by the user equipment, the channel state information according to the configuration information, and feeding back the channel state information includes:
  • the measurement of channel state information for resources for channel measurement includes channel measurement of resources for channel measurement and interference measurement of the N resources.
  • the configuration information indicating that the measurement attribute information of the resource includes:
  • the configuration information includes first indication information for indicating a measurement attribute
  • the resource or format of the configuration information is used to indicate a measurement attribute of the resource.
  • the X interference measurement comprises: measuring interference by using a reference signal of zero power, acquiring the strongest one or more interferences by using a resource of the channel state information reference signal of non-zero power, and utilizing channel state information of non-zero power
  • the resource of the reference signal acquires the weakest one or more interferences, and the resource of the channel state information reference signal of the non-zero power acquires the interference that is not precoded, and the resource acquisition corresponding to the channel state information reference signal of the non-zero power can be used.
  • All interferences of all selectable precoding matrices in the codebook using the resources of the channel state information reference signal of non-zero power to obtain interference corresponding to the non-strongest or weakest specific precoding matrix, and using non-zero power
  • the demodulation reference signal acquires at least one of the precoded interference.
  • the resource for channel state information measurement includes at least one, and the first indication information used to indicate the measurement attribute of the resource includes several elements, and each of the several elements is used to indicate the resource.
  • each of the elements includes at least one bit, the number of the bits being related to the number of kinds of the measurement attributes.
  • the resource for channel state information measurement has a measurement attribute or has more than one measurement attribute.
  • a resource identifier identifies a resource used to identify channel state information measurement, and a first indication information is used to indicate a measurement attribute, and a resource identifier has a first indication information, or has more than one An indication message.
  • the first indication information may be a bitmap, or a manner of measuring an index of an attribute.
  • the one measurement attribute corresponds to one resource used for channel state information measurement, or the one measurement attribute corresponds to more than one resource used for channel state information measurement.
  • a resource identifier identifies a resource for identifying channel state information measurement
  • the first indication information used to indicate the measurement attribute of the one or more resources for channel state information measurement may include Determining one or more resource identifiers of resources for channel state information measurement, or may include a number of bits, each of the bits being used to indicate whether each of the resources has the measurement Attributes.
  • the measurement attribute is more than one type, and each of the more than one measurement attributes has corresponding first indication information.
  • the resource corresponding to the channel measurement in the measurement attribute includes at least two, and the measuring, by the user equipment, the channel state information according to the configuration information, and feeding back the channel state information includes:
  • the user equipment measures and feeds back channel state information for at least one of the at least two resources, the measuring comprising performing channel measurement on at least one of the at least two resources and on at least two resources other than performing channel measurement At least one resource other than the interference measurement.
  • the information about the resource for channel state information measurement includes information of resources available for channel measurement and information of resources used for interference measurement, and the configuration information further includes fourth indication information for indicating transmission.
  • the number of sets Y, Y is an integer.
  • performing measurement of channel state information for Z resources actually used for channel measurement may include: performing channel measurement on Z resources actually used for channel measurement, and removing resources from the resources available for channel state information measurement. The resources other than the Z resources are used for interference measurement.
  • the embodiment of the present invention further provides a method for measuring channel state information, including:
  • the user equipment receives configuration information from the wireless network device for channel state information measurement, the configuration information including information of resources available for channel state information measurement;
  • the user equipment performs measurement of channel state information according to the configuration information, and feeds back the channel state information and the measurement attribute information of the resource for channel state information measurement corresponding to the channel state information, where the measurement attribute includes Channel measurement, or X interference measurement, or channel measurement and X interference measurement, where X is an integer not less than one.
  • the measurement attribute information of the resource for channel state information measurement corresponding to the channel state information comprises a number of bits, each of the bits is used for A measurement attribute indicating each of the resources.
  • the resource for channel state information measurement corresponding to the channel state information is a part of the resource that can be used for channel state information measurement.
  • the X interference measurement comprises: measuring interference by using a reference signal of zero power, acquiring the strongest one or more interferences by using a resource of the channel state information reference signal of non-zero power, and utilizing channel state information of non-zero power
  • the resource of the reference signal acquires the weakest one or more interferences, and the resource of the channel state information reference signal of the non-zero power acquires the interference that is not precoded, and the resource acquisition corresponding to the channel state information reference signal of the non-zero power can be used.
  • All interferences of all selectable precoding matrices in the codebook using the resources of the channel state information reference signal of non-zero power to obtain interference corresponding to the non-strongest or weakest specific precoding matrix, and using non-zero power
  • the demodulation reference signal acquires at least one of the precoded interference.
  • a user equipment including a processor, a memory, and a transceiver.
  • the memory is configured to store instructions for executing the memory stored instructions to control transceivers to receive and transmit signals, and when the processor executes the instructions stored by the memory, the user equipment is used by Any one of the methods involved in the user equipment as described in the first aspect or the third aspect is completed.
  • a wireless network device including a processor, a memory, and a transceiver.
  • the memory is configured to store instructions
  • the processor is configured to execute the memory stored instructions to control transceivers to receive and transmit signals
  • the wireless network device uses Any of the methods involved in the wireless network device as described in the second aspect are completed.
  • an apparatus for channel state information measurement including modules for implementing any of the methods involved in the foregoing user equipment.
  • the specific modules may correspond to the method steps, and are not described herein.
  • an apparatus for channel state information measurement including modules for implementing any of the methods involved in the foregoing wireless network device.
  • the specific modules may correspond to the method steps, and are not described herein.
  • a computer storage medium for storing instructions that, when executed, can perform any of the methods involved in the foregoing user equipment or wireless network device.
  • a communication system including the user equipment provided in the foregoing fourth aspect and the wireless network device provided in the fifth aspect.
  • the method, device and system provided by the embodiments of the present invention are used to meet different requirements for channel state information measurement in some different scenarios of multi-point cooperation in a future network.
  • the 3rd generation partnership project (English: 3rd generation partnership project, 3GPP) is a project dedicated to the development of wireless communication networks. Generally, a 3GPP related organization is referred to as a 3GPP organization.
  • a wireless communication network is a network that provides wireless communication functions.
  • the wireless communication network may use different communication technologies, such as code division multiple access (CDMA), wideband code division multiple access (WCDMA), time division multiple access (English: time) Division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency-division multiple access (OFDMA), single carrier frequency division Multiple Carrier (English: Single Carrier FDMA, SC-FDMA for short), Carrier Sense Multiple Access with Collision Avoidance (English: Carrier Sense Multiple Access with Collision Avoidance).
  • CDMA code division multiple access
  • WCDMA wideband code division multiple access
  • TDMA time division multiple access
  • FDMA frequency division multiple access
  • OFDMA orthogonal frequency-division multiple access
  • Single carrier frequency division Multiple Carrier English: Single Carrier FDMA, SC-FDMA for short
  • Carrier Sense Multiple Access with Collision Avoidance English: Carrier Sense Multiple Access with Collision Avoidance
  • the network can be divided into 2G (English
  • a typical 2G network includes a global system for mobile communications/general packet radio service (GSM) network or a general packet radio service (GPRS) network.
  • GSM global system for mobile communications/general packet radio service
  • GPRS general packet radio service
  • a typical 3G network is used.
  • the network includes a universal mobile telecommunications system (UMTS) network.
  • UMTS universal mobile telecommunications system
  • a typical 4G network includes a long term evolution (LTE) network.
  • LTE network long term evolution
  • the UMTS network may also be referred to as a universal terrestrial radio access network (UTRAN).
  • UTRAN universal terrestrial radio access network
  • the LTE network may also be referred to as an evolved universal terrestrial radio access network (English: evolved universal terrestrial) Radio access network, referred to as E-UTRAN.
  • a cellular communication network can be divided into a cellular communication network and a wireless local area network (English: wireless local area networks, WLAN for short), wherein the cellular communication network is dominated by scheduling, and the WLAN is dominant.
  • the aforementioned 2G, 3G, 4G and 5G networks are all cellular communication networks. It should be understood by those skilled in the art that as the technology advances, the technical solutions provided by the embodiments of the present invention are equally applicable to other wireless communication networks, such as 4.5G or 5G networks, or other non-cellular communication networks. For the sake of brevity, embodiments of the present invention sometimes refer to a wireless communication network as a network.
  • the cellular communication network is a type of wireless communication network, which adopts a cellular wireless networking mode, and is connected between the terminal device and the network device through a wireless channel, thereby enabling users to communicate with each other during activities. Its main feature is the mobility of the terminal, and it has the function of handoff and automatic roaming across the local network.
  • FDD frequency division duplex, frequency division duplex
  • TDD time division duplex, time division duplex
  • User equipment (English: user equipment, abbreviated as UE) is a terminal device, which can be a mobile terminal device or a non-mobile terminal device. The device is mainly used to receive or send business data. User equipment can be distributed in the network. User equipments have different names in different networks, such as: terminals, mobile stations, subscriber units, stations, cellular phones, personal digital assistants, wireless modems, wireless communication devices, handheld devices, knees. Upper computer, cordless phone, wireless local loop station, car terminal, etc. The user equipment can communicate with one or more core networks via a radio access network (RAN) (access portion of the wireless communication network), such as exchanging voice and/or data with the radio access network.
  • RAN radio access network
  • a base station (English: base station, BS for short) device also referred to as a base station, is a device deployed in a wireless access network to provide wireless communication functions.
  • a device that provides a base station function in a 2G network includes a base transceiver station (BTS) and a base station controller (BSC), and a device that provides a base station function in a 3G network.
  • BTS base transceiver station
  • BSC base station controller
  • the device providing the base station function in the 4G network includes the evolved Node B (English: evolved NodeB, eNB for short)
  • the device that provides the function of the base station is an access point (English: access point, abbreviated as AP).
  • Devices providing base station functions in future 5G networks include Node B (gNB), Transceiver Point (TRP), and Transmission Point (TP) that continue to evolve.
  • the TRP and the TP may not include the baseband portion, only the radio frequency portion (including the antenna), and may also include the baseband portion and the radio frequency portion.
  • a base station can be connected to one or more TRPs or TPs.
  • a wireless device refers to a device that is located in a wireless communication network and that can communicate wirelessly.
  • the device may be a base station, a user equipment, or other network elements.
  • a network-side device is a device located on the network side in a wireless communication network, and may be an access network element, such as a base station or a controller (if any), or may be a core network element or other network. yuan.
  • NR new radio refers to a new generation of wireless access network technology that can be applied to future evolved networks, such as 5G networks.
  • Wireless local area network (English: wireless local area networks, referred to as WLAN) refers to a local area network using radio waves as a data transmission medium, and the transmission distance is generally only several tens of meters.
  • An access point (English: access point, abbreviated as AP) that connects to a wireless network and can also be connected to a wired network device. It can be used as an intermediary point to connect wired and wireless Internet devices to each other and transmit data.
  • RRC radio resource control
  • the RRC processes the third layer information of the control plane between the UE and the radio access network.
  • the RRC processes the third layer information of the control plane between the UE and the radio access network.
  • Usually contains at least one of the following features:
  • the information provided by the non-access stratum of the broadcast core network is responsible for broadcasting the network system information to the UE.
  • System information is usually repeated according to certain basic rules, and RRC is responsible for execution planning, segmentation, and repetition. It also supports the broadcast of upper layer information.
  • the RRC is responsible for broadcasting the network system information to the UE.
  • System information is usually repeated according to certain basic rules, and RRC is responsible for execution planning, segmentation, and repetition.
  • an RRC connection is established by the higher layer of the UE.
  • the RRC connection setup procedure includes several steps of reselection of available cells, access grant control, and establishment of a layer 2 signal link.
  • the RRC connection release is also requested by the upper layer to tear down the last signal connection; or when the RRC link fails, it is initiated by the RRC layer. If the connection fails, the UE will request to re-establish an RRC connection. If the RRC connection fails, the RRC releases the allocated resources.
  • the functionality of the RRC may also change, and the description herein is not limiting.
  • the present application also describes a method, an apparatus, and a system for reporting channel state information, and aims to provide an indication and reporting scheme for reporting multiple channel state information when a user equipment reports multiple channel state information, and minimizes multiple The delay in reporting the channel status information.
  • the embodiment of the present application provides a channel state information reporting method, including: receiving, by a user equipment, an indication information from a network device, where the indication information is used to indicate reporting of K channel state information, where The K channel state information is measured and reported on the same carrier, and K is an integer greater than or equal to 2; the user equipment reports the K channel state information according to the indication information.
  • the K channel state information may be reported at the same time to further reduce the delay, or may be reported in a time-sharing manner, so as to adapt the scheduling of the uplink resource to alleviate the problem that the uplink resource is limited.
  • the K channel state information is K non-periodically reported channel state information, or K semi-statically reported channel state information.
  • the indication information includes index information of the K channel state information report configuration and/or index information of the channel state information to which the K channel state information belongs to report the configuration group.
  • the indication information includes T channel state information reporting timing offset information, and the T channel state information reporting timing offsets are used for reporting the K channel state information, where T is greater than or equal to An integer of 2, the channel state information reporting timing offset refers to a time interval between the reporting of the channel state information and the reporting of the channel state information. The time interval may be in units of a certain time domain resource unit, for example, in a slot.
  • the network device sends channel state information reporting trigger information (such as the indication information) in slot 0, and the network device is When the slot 5 receives the report of the channel state information, the channel state information reporting timing offset is 4 slots.
  • the user equipment receives the channel state information reporting trigger information (such as the indication information) in the slot 0, and the user equipment reports the channel state information in the slot 5, and the channel state information reporting timing offset is 4 slots.
  • the indication information may be downlink control information.
  • the K channel state information is K periodically reported channel state information.
  • the indication information includes at least one of index information, reporting period information, and reporting subframe offset configuration information of the K channel state information reporting configuration.
  • the indication information may further include the K channel state information reporting configuration information, and at least one of the resource information used for the K channel state information measurement.
  • the indication information may be RRC signaling.
  • the indication information further includes beam information, where the beam information is used to indicate a beam used to report the K channel state information, where the beam information indicates L beams, and the L is An integer greater than or equal to 1, each of the L beams is used to report the K channel state information.
  • the L is an integer greater than or equal to 2
  • the L beams are beams transmitted by using the same time domain resource, or the L beams are respectively transmitted by using different time domain resources.
  • the embodiment of the present application provides a channel state information reporting method, including: the network device sends an indication information to the user equipment, where the indication information is used to report the reporting of the K channel state information, where K is greater than or equal to An integer of 2; the network device receives the K channel state information on the same carrier.
  • the K channel state information may be reported at the same time to further reduce the delay, or may be reported in a time-sharing manner, so as to adapt the scheduling of the uplink resource to alleviate the problem that the uplink resource is limited.
  • the K channel state information is K non-periodically reported channel state information, or K semi-statically reported channel state information.
  • the indication information includes index information of the K channel state information report configuration and/or index information of the channel state information to which the K channel state information belongs to report the configuration group.
  • the indication information includes T channel state information reporting timing offset information, and the T channel state information reporting timing offsets are used for reporting the K channel state information, where T is greater than or equal to An integer of 2, the channel state information reporting timing offset refers to a time interval between the reporting of the channel state information and the reporting of the channel state information.
  • the indication information may be downlink control information.
  • the K channel state information is K periodically reported channel state information.
  • the indication information includes at least one of index information, reporting period information, and reporting subframe offset configuration information of the K channel state information reporting configuration.
  • the indication information may further include the K channel state information reporting configuration information, and at least one of the resource information used for the K channel state information measurement.
  • the indication information may be RRC signaling.
  • the indication information further includes beam information, where the beam information is used to indicate a beam used to report the K channel state information, where the beam information indicates L beams, and the L is An integer greater than or equal to 1, each of the L beams is used for reporting the K channel state information.
  • the L is an integer greater than or equal to 2
  • the L beams are beams transmitted by using the same time domain resource, or the L beams are respectively transmitted by using different time domain resources.
  • the embodiment of the present application provides a user equipment, where the user equipment has a function of implementing the behavior of the user equipment in the method of the foregoing tenth aspect.
  • the functions may be implemented by hardware or by corresponding software implemented by hardware.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the embodiment of the present application provides a network device, where the network device has the function of implementing the behavior of the network device in the foregoing method in the eleventh aspect.
  • the functions may be implemented by hardware or by corresponding software implemented by hardware.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the embodiment of the present application provides a user equipment, where the structure of the user equipment includes a transceiver and a processor.
  • the transceiver is configured to support the user equipment to receive the information or data (such as receiving indication information) involved in the foregoing method of the tenth aspect, and to transmit the information or data involved in the method of the foregoing tenth aspect (the K channel state information is reported as above) ).
  • the processor is configured to support a user equipment to perform a corresponding function in the method of the above tenth aspect, for example, processing the indication information and/or the K channel state information.
  • the user equipment may further include a memory in the structure, where the memory is used to be coupled to the processor to save program instructions and data necessary for the user equipment.
  • the embodiment of the present application provides a network device, where the structure of the network device includes a transceiver and a processor.
  • the transceiver is configured to support the network device to send information or instructions involved in the foregoing method of the eleventh aspect to the user equipment, and receive information or data involved in the method of the eleventh aspect.
  • the processor is configured to support a network device to perform a corresponding function in the above-described eleventh method, such as generating or processing signaling information (eg, the indication information) and/or downlink data involved in the above method.
  • the network device may further include a communication unit, where the communication unit is configured to support the network device to communicate with other network devices, for example, receive information or instructions sent by a scheduling node or other network device, and / or send information or instructions to other network side devices.
  • the structure of the network device may further include a memory for coupling with the processor to save necessary program instructions and data of the network device.
  • the embodiment of the present application provides a communication system, which includes the user equipment of the fourteenth aspect and the network device of the fifteenth aspect.
  • the embodiment of the present application provides a computer storage medium for storing computer software instructions used by the user equipment, which includes a program designed to perform the above aspects.
  • the embodiment of the present application provides a computer storage medium for storing computer software instructions used by the network device, which includes a program designed to perform the above aspects.
  • the embodiment of the present invention further provides a device having the function of implementing the method of the above tenth aspect.
  • This feature can be implemented in hardware.
  • the apparatus includes a memory, a processor, and instructions stored on the memory and executable on the processor, the apparatus executing the instructions to cause the apparatus to implement the method of the tenth aspect.
  • the device can be a chip system that includes at least one chip and can also include other discrete devices.
  • the embodiment of the present invention further provides a device having the function of implementing the method of the eleventh aspect.
  • This feature can be implemented in hardware.
  • the apparatus includes a memory, a processor, and instructions stored on the memory and executable on the processor, the apparatus executing the instructions to cause the apparatus to implement the method of the eleventh aspect.
  • the device can be a chip system that includes at least one chip and can also include other discrete devices.
  • an embodiment of the present invention further provides a computer program product, the computer program product comprising instructions, when the instruction is run on a computer, causing the computer to perform the method of the tenth aspect.
  • an embodiment of the present invention further provides a computer program product, the computer program product comprising instructions, when the instruction is run on a computer, causing the computer to perform the method of the eleventh aspect.
  • FIG. 1 is a schematic flowchart of a method for measuring channel state information according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of a multi-cell collaboration scenario according to an embodiment of the present invention.
  • FIG. 3 is a schematic flowchart diagram of another method for measuring channel state information according to an embodiment of the present disclosure
  • FIG. 4 is a schematic diagram of an internal structure of a base station and a UE according to an embodiment of the present disclosure
  • FIG. 5 is a schematic diagram of an apparatus (such as a wireless network device) for measuring channel state information according to an embodiment of the present invention
  • FIG. 6 is a schematic diagram of another apparatus (such as a user equipment) for measuring channel state information according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of a communication system according to an embodiment of the present invention.
  • FIG. 8 is a schematic flowchart of reporting channel state information according to an embodiment of the present disclosure.
  • FIG. 8b is a schematic flowchart of another channel status information reporting according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic diagram of a scenario for reporting channel state information according to an embodiment of the present disclosure.
  • Figure 10a is a schematic diagram of beam transmission according to an embodiment of the present invention.
  • FIG. 10b is still another schematic diagram of beam transmission according to an embodiment of the present invention.
  • FIG. 10c is a schematic diagram of still another beam transmission according to an embodiment of the present invention.
  • FIG. 11 is a schematic structural diagram of a network device according to an embodiment of the present invention.
  • FIG. 11b is a schematic structural diagram of another network device according to an embodiment of the present invention.
  • FIG. 12 is a schematic structural diagram of a UE according to an embodiment of the present invention.
  • FIG. 12b is a schematic structural diagram of another UE according to an embodiment of the present invention.
  • a component can be, but is not limited to being, a process running on a processor, a processor, an object, an executable, a thread in execution, a program, and/or a computer.
  • an application running on a computing device and the computing device can be a component.
  • One or more components can reside within a process and/or thread of execution, and a component can be located in a computer and/or distributed between two or more computers. Moreover, these components can execute from various computer readable media having various data structures thereon.
  • These components may be passed, for example, by having one or more data packets (eg, data from one component that interacts with the local system, another component of the distributed system, and/or signaled through, such as the Internet)
  • the network interacts with other systems to communicate in a local and/or remote process.
  • the wireless network device may be a base station, the base station may be used to communicate with one or more user equipments, or may be used to communicate with one or more base stations having partial user equipment functions (such as a macro base station and a micro base station, such as Incoming, communication between the two); the wireless device can also be a user equipment, the user equipment can be used for communication (such as D2D communication) of one or more user equipments, and can also be used for communication with one or more base stations.
  • partial user equipment functions such as a macro base station and a micro base station, such as Incoming, communication between the two
  • the wireless device can also be a user equipment, the user equipment can be used for communication (such as D2D communication) of one or more user equipments, and can also be used for communication with one or more base stations.
  • User equipment may also be referred to as user terminals and may include systems, subscriber units, subscriber stations, mobile stations, mobile wireless terminals, mobile devices, nodes, devices, remote stations, remote terminals, terminals, wireless communication devices, wireless communication devices, or Some or all of the features of the user agent.
  • User equipment can be cellular phones, cordless phones, Session Initiation Protocol (SIP) phones, smart phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), laptop computers, handheld communication devices, handheld computing Devices, satellite wireless devices, wireless modem cards, and/or other processing devices for communicating over wireless systems.
  • SIP Session Initiation Protocol
  • WLL wireless local loop
  • PDAs personal digital assistants
  • laptop computers handheld communication devices
  • handheld computing Devices satellite wireless devices
  • wireless modem cards wireless modem cards
  • a base station may also be referred to as an access point, a node, a Node B, an evolved Node B (eNB), a gNB, a TRP, a TP, or some other network entity, and may include some or all of the functions of the above network entities.
  • the base station can communicate with the wireless terminal over the air interface. This communication can be done by one or more sectors.
  • the base station can act as a router between the wireless terminal and the rest of the access network by converting the received air interface frame into an IP packet, wherein the access network includes an Internet Protocol (IP) network.
  • IP Internet Protocol
  • the base station can also coordinate the management of air interface attributes and can also be a gateway between the wired network and the wireless network.
  • the application will present various aspects, embodiments, or features in a system that can include multiple devices, components, modules, and the like. It is to be understood and appreciated that the various systems may include additional devices, components, modules, etc. and/or may not include all of the devices, components, modules, etc. discussed in connection with the figures. In addition, a combination of these schemes can also be used.
  • the word "exemplary” is used to mean an example, an illustration, or a description. Any embodiment or design described as “example” in this application should not be construed as preferred or advantageous over other embodiments or designs. Rather, the term use examples is intended to present concepts in a concrete manner.
  • information, signal, message, and channel may sometimes be mixed. It should be noted that the meaning to be expressed is consistent when the difference is not emphasized. “of”, “corresponding (relevant)” and “corresponding” can sometimes be mixed. It should be noted that the meaning to be expressed is consistent when the distinction is not emphasized.
  • the subscript such as W1 may be a non-subscript form such as W1, and the meaning to be expressed is consistent when the difference is not emphasized.
  • the network architecture and the service scenario described in the embodiments of the present invention are used to more clearly illustrate the technical solutions of the embodiments of the present invention, and do not constitute a limitation of the technical solutions provided by the embodiments of the present invention.
  • the technical solutions provided by the embodiments of the present invention are equally applicable to similar technical problems.
  • the embodiment of the present invention can be applied to a time division duplex (TDD) scenario or a frequency division duplex (FDD) scenario.
  • TDD time division duplex
  • FDD frequency division duplex
  • the embodiments of the present invention can be applied to a traditional typical network or to a UE-centric network in the future.
  • the UE-centric network introduces a non-cell network architecture, that is, deploys a large number of small stations in a specific area to form a hyper cell, and each station is a transmission point of the Hyper cell ( Transmission Point, TP) or TRP, and connected to a centralized controller.
  • TP Transmission Point
  • TRP Transmission Point
  • the network side device selects a new sub-cluster (sub-cluster) for the UE to serve, thereby avoiding true cell handover and achieving continuity of the UE service.
  • the network side device includes a wireless network device.
  • the base station is uniquely identified by the base station ID. If all TPs or TRPs in a Hypercell are the same ID, there is only one base station in the hyper cell.
  • the 3GPP TS 36.213 protocol proposes to use NZP CSI-RS for channel measurement and ZP CSI-RS for interference measurement.
  • csi-ProcessId represents the identity of the CSI process (identity or identifier, ID)
  • csi-RS-ConfigNZPId represents the identity (ID) of the NZP CSI-RS
  • csi-IM-ConfigId represents the interference measurement (IM).
  • ID of the CSI-RS includes the CSI-RS of the ZP.
  • the cells included in the NZP CSI-RS domain are as follows:
  • the csi-RS-ConfigNZPId indicates the ID of the NZP CSI-RS
  • the antennaPortsCount indicates the number of antenna ports
  • the resourceConfig indicates the configuration information of the resource (such as the time-frequency resource configuration information, which may also be called the transmission pattern)
  • the subframeConfig indicates the subframe configuration information.
  • the scramblingIdentity indicates scrambling information
  • the qcl-CRS-Info indicates information of a CRS (common reference singal) having a QCL (Quasi-co-located) relationship with the CSI-RS.
  • the cells included in the ZP CSI-RS domain are as follows:
  • the csi-RS-ConfigZPId indicates the ID of the ZP CSI-RS
  • the resourceConfigList indicates the resource configuration table (each resource configuration corresponds to one transmission pattern)
  • the subframeConfig indicates the subframe configuration information.
  • non-NZP CSI-RS measurement channels ie, channel measurement
  • non-ZP CSI-RS measurement interference ie, interference measurement
  • the sum of all the interference powers on the ZP CSI-RS resources can only be measured by the ZP CSI-RS, and the measurement cannot be performed in a targeted manner, such as measuring the H*Wmax corresponding to the strongest interference (where H is the channel matrix) Wmax is the precoding matrix with the highest throughput rate, or H*Wmin corresponding to the weakest interference (where Wmin is the precoding matrix with the lowest throughput), or H corresponding to the omnidirectional interference.
  • the measurement of channel state information may be obtained based on signal to interference plus noise (SINR) (eg, CQI may be based on CQI and SINR).
  • SINR signal to interference plus noise
  • the SINR can be obtained based on the signal power and the interference power, wherein the signal power can be obtained by channel measurement (referred to as the power of the channel measurement), and the interference power can be obtained by the interference measurement (referred to as interference measurement). power).
  • SINR channel measured power / (interference measured power + noise power).
  • the power of the channel measurement and the power of the interference measurement based on the reference signal of the non-zero power can be obtained based on the H*W vector value, for example, the value of
  • the meaning is that the product of H and W is determinant.
  • H is a channel measurement vector, which is a channel impulse response obtained by correlation, interpolation, etc. according to the pilot signal.
  • W is a precoding vector, which is selected by the UE in the available codebook, and is usually obtained according to the throughput rate. If the throughput rate of H*W1 is the largest, the UE reports the PMI corresponding to W1 to the base station. The base station refers to the PMI reported by the UE when scheduling.
  • the scheduling of the base station should consider other user equipments in the cell, and also consider the user equipment of the neighboring cell when cooperating. Therefore, the reporting of the UE is only for the reference of the base station, and is the precoding matrix that the UE considers to be the best for itself, and the base station sends the data. It is not necessary to encode the data according to the PMI. In order to enable the base station to have more sufficient information to obtain a better scheduling result, the measurement result reported by the UE is as large as possible. For example, in a cooperative scenario, the UE needs to report the neighboring cell CSI of the measurement, and the CSI is for the serving base station to the UE.
  • the inter-carrier transmission is an interference.
  • the measurement result reported by the UE can facilitate the scheduling of the serving base station. For example, when the neighboring cell uses W1, the interference is strongest, and when W2 is used, the interference is the weakest.
  • W3W4W5 is other optional precoding matrix, assuming UE. After reporting all possible C-corresponding CSIs, the serving base station can know that the neighboring area needs to avoid W1, and it is better to select W2. If W2 cannot be selected, since the vector distance between W3 and W2 is closer to W1, W3 can also be selected. In summary, the more CSIs that the UE reports to the base station, the better the service base station and the cooperative base station can obtain the optimal scheduling result.
  • the resource used for channel measurement in the embodiment of the present invention means that the power obtained according to the H*W measured on the resource is the power measured as a channel (referred to as a channel), and the resource used for the interference measurement refers to the resource.
  • the above-mentioned power obtained according to H*W measured on the resource is the power measured as interference (referred to as interference).
  • interference the power measured as interference
  • the CSI may include a channel quality indicator (CQI), a rank indicator (RI), and a combination of one or more of precoding matrix indicator (PMI) information.
  • CQI channel quality indicator
  • RI rank indicator
  • PMI precoding matrix indicator
  • CQI is taken as an example in some descriptions, but it does not mean that these descriptions are only applicable to CQI, and should also be understood as feedback applicable to RI and PMI.
  • the embodiment of the present invention provides a method for measuring channel state information, including:
  • the user equipment receives configuration information for channel state information measurement from a first wireless network device, where the configuration information includes information about resources of channel state information measurement and indicates measurement attribute information of the resource, the measurement Attributes include channel measurements, or X types of interference measurements, or channel measurements and X types of interference measurements, where X is an integer greater than or equal to one;
  • the user equipment performs measurement of channel state information according to the configuration information and feeds back the channel state information.
  • the user equipment feeds back channel state information to the second wireless network device, where the second wireless network device and the first wireless network device may be the same or different.
  • the first wireless network device sends configuration information for channel state information measurement to the user equipment, the configuration information including information of resources for channel state information measurement and indicating measurement attribute information of the resource, the measurement Attributes include channel measurements, or X types of interference measurements, or channel measurements and X types of interference measurements, where X is an integer greater than or equal to one;
  • the second wireless network device receives channel state information from the user equipment, the channel state information being derived based on the configuration information, wherein the second wireless network device and the first wireless network device are the same or different.
  • the first wireless network device is a wireless network device to which the serving cell of the user equipment belongs
  • the second wireless network device is a wireless network device to which the serving cell of the user equipment belongs or a wireless network device to which the non-serving cell belongs.
  • the configuration information indicating that the measurement attribute information of the resource includes:
  • the configuration information includes first indication information for indicating a measurement attribute
  • the resource or format of the configuration information is used to indicate a measurement attribute of the resource.
  • the X interference measurement comprises: measuring interference (such as interference power) by using a reference signal of zero power, and acquiring the strongest P interference by using resources of the channel state information reference signal of non-zero power (where P is configurable or For protocol reservations, no configuration is required, using the resources of the channel state information reference signal of non-zero power to obtain the weakest Q interferences (where Q is configurable or not required for protocol reservation), using channel state information reference signals of non-zero power
  • the resource acquires interference that is not precoded (omnidirectional interference), and uses the resource of the channel state information reference signal of the non-zero power to acquire all interferences of all selectable precoding matrices in the available codebook, using non-zero power
  • the resource of the channel state information reference signal acquires interference corresponding to a non-strongest or weakest specific precoding matrix (W), acquires interference using a demodulation reference signal of non-zero power, and utilizes a demodulation reference signal of non-zero power Obtaining at least one of the precoded
  • “using the resource of the channel state information reference signal of the non-zero power to obtain the interference corresponding to the non-strongest or weakest specific precoding matrix (W)” may correspond to the UE measurement behavior, which may include: the UE according to the NZP CSI- The RS estimates the channel signal, the UE subtracts the channel signal from the received signal, and the remaining signal is considered to be an interference signal, which may be the interference of the non-strongest or weakest specific precoding matrix (W).
  • the measurement behavior of the UE corresponding to the “acquiring the pre-coded interference by using the demodulation reference signal of the non-zero power” may include: the UE measures the interference caused by other UEs according to the DMRS, and the other UEs include the MU-MIMO (multiple The paired UE in the user input/output scenario, and/or the UE scheduled by other cells of the cell in which the UE is located, may be pre-coded interference.
  • the X interference measurements may further include acquiring interference using a demodulation reference signal of non-zero power.
  • the measurement behavior of the corresponding UE may be: the UE estimates the channel signal according to the DMRS, and the UE subtracts the channel signal from the received signal, and the remaining signal is considered as an interference signal, and the interference may be precoded. It can also be unprecoded.
  • the “acquisition of the pre-coded interference by using the demodulation reference signal of non-zero power” may also be that the interference of the neighboring cell is pre-coded, and the measurement behavior of the corresponding UE is: the UE estimates according to the DMRS. For the channel signal, the UE subtracts the channel signal from the received signal, and the remaining signal is considered to be an interference signal, and the interference is precoded.
  • the above strongest P interferences or the weakest Q interferences may be obtained in the case of a base station type C CSI-RS.
  • the CSI-RS is not precoded, and is a complete Signal to the signal.
  • the UE traverses to select the optimal P precoding matrix or the worst P precoding matrix, and reports the corresponding PMI. It can also be obtained when the base station sends a class B CSI-RS, which can be precoded by W1, and W1 is a wide beam.
  • W1 is a wide beam.
  • the UE traverses the optional W2, and selects the optimal P W2 or the worst Q W2 to report the corresponding PMI.
  • the CSI-RS actually sent by the base station may be pre-coded or un-precoded.
  • the main scenario of the embodiment of the present invention is based on cooperative transmission.
  • the CSI measurement and feedback process is enhanced to indicate multiple measurement resources and measurement behavior.
  • 2 is a schematic diagram of a multi-cell cooperation scenario.
  • the CSI measurement needs to help decide which TPs to participate in the transmission. Therefore, it is necessary to assume a transmission set, a hypothetical interference combination, so that the UE can give CSI measurement results under different assumptions.
  • the TP determines which TPs are included in the transmission set according to different CSI measurement results. It can be understood that the TP in this scenario can also be a TRP or a gNB, but can be referred to as a base station.
  • the existing transmission set is ⁇ TP1, TP2 ⁇ , but as the UE moves, it is not determined whether TP3 is to be added to the transmission set.
  • the assumption of the transmission set may be ⁇ TP1, TP2 ⁇ or ⁇ TP2, TP3. ⁇ or ⁇ TP1, TP2, TP3 ⁇ .
  • the resources allocated for each TP are not determined to measure the channel or measure interference.
  • a reference signal RS can be used for both channel measurement and interference measurement, so the measurement purpose cannot be determined by the resource type (non-zero power or zero power).
  • the measurement purpose cannot be bound by the resource ID.
  • the measurement resource and the measurement behavior may be bound in a certain transmission set hypothesis, and the measurement resource and the measurement behavior may be indicated, where the indication includes an indication of the display, such as including the first indication information, and may also include an implicit
  • the indication is indicated by a resource or a format for indicating configuration information of the measurement resource, or implicitly by other information corresponding to the measurement behavior.
  • the UE when the UE receives the first indication information, it can determine the measurement behavior to be performed, and report the corresponding channel state information.
  • the base station sends Type#, and the UE knows how to measure interference on a certain resource.
  • Type# such as:
  • Type#0 The result measured on the NZP CSI-RS resource is taken as the channel measurement result and is calculated into the CQI.
  • Type#1 The NZP CSI-RS resource first measures the H matrix according to the pilot correlation, and the UE sequentially determines the throughput rate corresponding to the H*W according to the codebook corresponding to the rank or the precoding matrix group configured by the base station, corresponding to the throughput.
  • the W matrix with the highest rate is the W matrix that causes the strongest interference.
  • the CSI-RS measures H*W1 (wide beam of CLASS B) according to the pilot, and the UE polls and selects W2, and H*W1*W2 is interference information, which can be used for interference in CQI calculation.
  • Type #3 can be a W matrix selected according to the throughput rate and the minimum throughput, which is the pre-coded matrix that causes the weakest interference.
  • Type#2 The signal sent by the neighboring base station is an omnidirectional signal, that is, the preamble is not pre-coded, the serving base station can send the information to the UE, and the UE can only measure the H matrix on the NZP CSI-RS.
  • the UE measurement behavior corresponding to Type#3 and Type#0 is the same, but the measurement result is treated as a channel in the CQI calculation and one is treated as interference.
  • Type#4 is a technology for measuring interference: ZP CSI-RS measures the interference caused by all other base stations except the serving base station. The prior art only supports the power of the interference measured on the ZP.
  • Type#5 measures interference on DMRS resources, and the interference measured on DMRS is precoded. Possible solutions for DMRS measurement interference are:
  • the base station informs the UE of the precoding matrix used on the DMRS, and the result measured on the DMRS is inversely multiplied by W, and after obtaining the H matrix, the UE re Select the W matrix corresponding to the strongest or weakest interference according to a certain indicator (such as the above throughput rate), or the W used by the serving base station to inform the data transmitted with the DMRS, and the UE will multiply the calculated H and the used data. Multiply and get the interference caused by the data.
  • the UE can select the narrow beam W2 according to certain indicators (such as throughput rate, other indicators: SINR, CQI, etc.), so the interference caused by the data can be multiplied by H*W1 (measurement result of DMRS pilot). Obtained by W2.
  • certain indicators such as throughput rate, other indicators: SINR, CQI, etc.
  • reference signals other than those listed in the above table may also be utilized for interference measurements, such as SRS.
  • SRS DMRS hw1w2
  • the indication may be performed by the domain in which the resource for channel state information measurement is located, that is, the format of the configuration information, or implicitly by other information corresponding to the measurement behavior. Instructions.
  • other information corresponding to the measurement behavior may include:
  • the UE may determine the measurement behavior on the configured or triggered interference measurement resource by the correspondence between the transmission mode and the measurement behavior. For example, if the transmission mode is the coordinated transmission mode (TM10), the UE multiplies the measured channel matrix and the precoding matrix on the NZP CSI-RS resource as interference on the configured or triggered NZP CSI-RS resource. For example, when the transmission mode is multi-user mode (such as MU, TM5), on the configured or triggered NZP CSI-RS resource, the UE subtracts the estimated channel signal from the received signal, and the remaining signal acts as interference.
  • TM10 coordinated transmission mode
  • the transmission mode is multi-user mode (such as MU, TM5)
  • the UE subtracts the estimated channel signal from the received signal, and the remaining signal acts as interference.
  • the UE when the transmission mode is the multi-user mode (MU, TM5), the UE measures the interference caused by other UEs through the DMRS resources on the configured/triggered DMRS resources.
  • other UEs include the MU-MIMO scenario. Paired UEs, and/or UEs scheduled by other cells of the cell in which the UE is located.
  • the transmission mode when the transmission mode is multi-stream beamforming transmission (TM9), the UE may subtract the channel signal estimated by the DMRS from the received signal on the configured or triggered DMRS resource, and the remaining signals serve as interference.
  • TM9 multi-stream beamforming transmission
  • the UE may subtract the channel signal estimated by the DMRS from the received signal on the configured or triggered DMRS resource, and the remaining signals serve as interference.
  • Which of the specific correspondences may be set by the system, or may be configured by the network side.
  • other reference factors may also be introduced during setting or configuration, which are not limited herein.
  • the UE may determine the measurement behavior on the configured or triggered interference measurement resource according to the correspondence between other configuration information and the measurement behavior.
  • Other configuration information includes the number of downlink control channels for the current carrier downlink data transmission that the UE needs to simultaneously detect, and/or QCL configuration information and the like.
  • the number of downlink control channels for the current carrier downlink data transmission that the UE needs to detect at the same time has a corresponding relationship with the measurement behavior of the UE.
  • the base station configures the number of PDCCHs that the UE needs to receive.
  • the UE multiplies the measured channel matrix and the precoding matrix on the NZP CSI-RS resource configured or triggered.
  • the UE subtracts the estimated channel signal from the received signal, and the remaining signal acts as interference, or the UE measures the interference caused by other UEs through the DMRS resource, or the UE subtracts the received signal from the DMRS estimation.
  • the channel signal, the remaining signal as interference.
  • the other UEs include the paired UEs in the MU-MIMO scenario, and/or the UEs scheduled by other cells in the cell where the UE is located.
  • the specific correspondence is which can be set by the system or configured through the network side.
  • other reference factors may also be introduced during setting or configuration, which are not limited herein.
  • the other configuration information may also be a QCL configuration information.
  • the measurement behavior may be determined by using a PQI (PDSCH RE Mapping and Quasi-Co-Location Indicator) field.
  • PQI PDSCH RE Mapping and Quasi-Co-Location Indicator
  • the UE multiplies the measured channel matrix and the precoding matrix on the NZP resource as interference, or the UE, on the configured or triggered NZP CSI-RS resource.
  • the received signal is subtracted from the estimated channel signal, and the remaining signal is used as interference, or the UE measures the interference caused by other UEs through the DMRS resource, or the UE subtracts the channel signal estimated by the DMRS from the received signal, and the remaining signal As interference.
  • the other UEs include the paired UEs in the MU-MIMO scenario, and/or the UEs scheduled by other cells in the cell where the UE is located.
  • the specific correspondence is which can be set by the system or configured through the network side.
  • other reference factors may also be introduced during setting or configuration, which are not limited herein.
  • the above indication may also be a combination of an explicit indication and an implicit indication, for example, the indication of the channel measurement is implicitly indicated, and the type of the specific interference measurement is explicitly indicated.
  • both the channel and the channel can be measured, or the multiple channels are measured or interfered.
  • the possible situation is that the base station configures the measurement resources for the UE, but according to the existing protocol, the UE does not know The result measured on the configured resources is whether the channel is still interference, or whether it is the strongest interference or the weakest interference. Therefore, configuring a resource no longer represents a single measurement behavior. Based on the method provided in the embodiments of the present invention, some measurement behavior under a certain resource may be configured.
  • the transmission set dynamically changes with the movement of the UE or the dynamic cooperation between the base stations. Therefore, in the measurement phase, neither the base station nor the UE has determined which base stations are included in the transmission set (unless relying on RSRP to determine the transmission set). Therefore, the CSI measurement results require the size and configuration of the secondary base station to determine the transmission set.
  • the UE feeds back the CSI measurement results under the possible transmission set to the base station, and provides the base station with measurement results under various cooperation hypotheses, transmission hypotheses, and interference assumptions, thereby helping the base station to make decisions.
  • the UE may obtain multiple CSI measurement results according to the measurement attributes to support the decision of the base station.
  • the resource for channel state information measurement includes at least one, and the first indication information used to indicate the measurement attribute of the resource includes several elements, and each of the several elements is used to indicate the resource.
  • Each element can be an int (decimal) value, a bit value, or an index of the measured attribute.
  • each resource has only one measurement attribute.
  • the number of bits of the bit value included in each element is related to the number of types of measurement attributes. For example, if the number of types of measurement attributes is 4, the number of bits of the bit value is 2; and the number of types of measurement attributes is 5, the number of bits of the bit value is 3.
  • the first indication information may be included in a CSI measurement setting field or a CSI process domain.
  • the first indication information is included in the high layer signaling, or is included in the physical layer signaling.
  • the high layer signaling may include RRC signaling
  • the physical layer signaling may include downlink control information (DCI) signaling.
  • DCI downlink control information
  • the TRP needs to be reconfigured and the first indication information is sent. It can be understood that this situation is suitable for the case where there are multiple interference measurements, as defined above, and also for the presence of only channel measurements and one interference measurement (such as the existing interference using ZP CSI-RS). Measurement).
  • the measurement attributes of the base station configuration resource are as follows:
  • the first indication information may be 0011122, where each element is 1 int, or may be 00000101011010, where each element is 2 bits, and the corresponding IDs are in order from small to large.
  • the UE receives the first indication information, and can obtain resources with IDs 1 and 2, resources with measurement attributes of 0, IDs of 3, 4, and 5, resources with measurement attributes of 1, IDs of 6 and 7, and measurement attributes of 2.
  • the same resource may be configured to be used for both channel measurement and at least one of the foregoing X types of interference measurement. That is, the resource used for channel state information measurement has one measurement attribute, or has more than one measurement attribute.
  • the first indication information used to indicate the measurement attribute information of the resource may be in the dimension of the identifier (ID) of the resource.
  • the first indication information is included in a resource domain of the resource.
  • the first indication information may be several elements, each element may be an index of measurement attributes possessed by the resource, or a measurement attribute corresponding to each of several elements, the number of elements and the measurement attribute The type is related.
  • the base station configures measurement attributes for each resource (ID), as shown in Table 3 below:
  • the configuration information of the resources can be exemplified as follows:
  • the Measure Type is used to indicate the measurement attribute that the resource has.
  • the UE can learn to perform channel measurement on the resource with the resource ID of 0, perform interference measurement on the resource with ID 1, and obtain the strongest interference, and the resources with IDs 2 and 3 are performed. Interference measurement, obtain omnidirectional interference, and perform interference measurement on the resource with ID 4 to obtain the interference power of the neighboring base station.
  • the second mode is configured by using the resource as the dimension
  • the other mode is configured by using the measurement attribute as the dimension. That is, one measurement attribute corresponds to one resource for channel state information measurement, or one measurement attribute corresponds to more than one resource for channel state information measurement.
  • the first indication information used to indicate the measurement attribute information of the resource may include several elements, and each element may be one or more resource identifiers of resources for channel state information measurement with certain measurement attributes, Alternatively, each of the plurality of elements corresponds to a resource identifier indicating whether the resource has the measurement attribute. The number of elements is related to the total number of resources (identifications).
  • the base station configures a resource ID for each measurement attribute, as shown in Table 4 below:
  • the MeasureType0 is configured with a CSI-RS resource ID corresponding to Type0 (configured by CSI-RS-ConfigIdList), and MeasureType1 is configured with a CSI-RS resource ID corresponding to Type1 (configured by CSI-RS-ConfigIdList).
  • the configuration signaling may be included in a CSI measurement setting field or a CSI process domain.
  • the UE can learn that the resource with ID 0 is used for channel measurement, the resource with ID 1 is used for interference measurement of Type 1, and the resources with IDs 2 and 3 are used for interference measurement of Type 2, ID.
  • a resource of 4 is used for Type 4 interference measurements.
  • the type can also be two types of RS setting and IM setting included in the CSI measurement setting.
  • the above table can be expressed as follows:
  • the resource ID corresponding to each measurement attribute can be configured in the corresponding measurement attribute domain, for example, the resource IDs 1 and 2 are configured in the RS-setting (reference signal setting) field, and the IM-setting (interference measurement setting) is set.
  • the resource IDs in the domain are configured as 3, 4, and 5.
  • the configuration information of the link indicates the measurement attribute of the resource in the resource setting indicated by the link.
  • the resources in the resource setting are the aforementioned resources for channel state information measurement.
  • the configuration information in the link may include: a resource setting ID, and a reporting setting ID.
  • the foregoing information of the resource for channel state information measurement includes the resource setting identifier.
  • the configuration information in the link may further include: a resource quantity.
  • the attribute of the resource may be a channel or an interference.
  • the configuration information in the link may further include: an interference measurement attribute.
  • the attribute of the resource and/or the interference measurement attribute is a specific representation of the aforementioned measurement attribute.
  • the interference measurement attribute may be an item of the aforementioned X kinds of interference measurement.
  • the identifier (such as index or number) of the interference measurement attribute may be the same as or different from the identifier of the item of the foregoing X interference measurement.
  • the attribute of the foregoing resource is a channel
  • the link indicates that the measurement attribute identifier is 1, indicating that the measurement behavior corresponding to the identifier 1 is performed on the resource pointed to by the link.
  • the foregoing resource includes a resource of a zero-power channel state information reference signal, and the attribute of the resource of the zero-power channel state information reference signal (ZP CSI-RS) can only be interference.
  • the link indicating the resource-related configuration may not include the domain (or field, or cell) of the attribute of the resource, but includes the interference measurement attribute.
  • a link may include configuration information of a plurality of resources, and the content included in the configuration information of each resource (ie, one or more of the foregoing report setting identifier, attribute of the resource, interference measurement attribute, and channel measurement attribute) may be different.
  • each configuration information of the resources may include configuration information corresponding to each resource setting identifier, and has a corresponding relationship with the order of the resource setting identifiers, for example, sequentially in the order of the resource setting identifiers.
  • the attribute of the resource corresponding to the resource of the ZP CSI-RS may default to none. For example, there are two resources with the interference measurement attribute pointed by the link, one of which is a ZP CSI-RS resource and the other is a non-ZP CSI-RS resource. In this case, the attribute of the resource indicated by the link is only One (interference), and the interference measurement attribute has two.
  • a form of configuration for a link can be:
  • the attribute of the configuration information is a numerical value.
  • the information of the resource for channel state information measurement includes information of resources available for channel measurement and information of resources used for interference measurement, the configuration information
  • the second indication information is further included to indicate the number M of resources actually used for channel measurement, where M is an integer not less than 1.
  • the user equipment performs channel state information measurement according to the configuration information and feeds back the channel state information, including:
  • performing measurement of channel state information for the resource actually used for channel measurement includes: performing channel measurement on the resource actually used for channel measurement, or performing channel on the resource actually used for channel measurement. And performing interference measurement on resources other than the M resources in the resources available for measurement of channel state information.
  • the configuration of the base station can be as follows:
  • the UE can learn, by using the second indication information, that the number of resources actually used for channel measurement is 1.
  • the value of the second indication information may be an int type or a bit type or other type, which is not limited herein.
  • the resource available for channel measurement is identified by the configuration information as a resource with IDs 1 and 2, and the resource used for interference measurement is a resource with ID 3.
  • the value of the second indication information is an int type
  • the number of resources that can be used for channel measurement may be “0”, “1” or “2”. , respectively, 0, 1, and 2.
  • the resource indicating ID 1 and the resource with ID 2 are from two base stations for cooperative transmission, and the results measured on the two resources are all channels, and the joint is measured. channel. If the value is "1", it means that the UE needs to obtain two CQI calculation results.
  • This situation differs from the former case in that resources that are not used for channel measurement among the resources available for channel measurement are not used for interference measurement.
  • whether resources that are not used for channel measurement in the resources available for channel measurement are used for interference measurement may be predefined by a protocol, or may be separately configured by a base station.
  • the second indication information as a binary type, for example, "00", “01”, “10", “11”, “01” may indicate that the resource with ID 1 is used for channel measurement, and "10" may indicate that the ID is 2
  • the resources are used for channel measurement, and "11” may indicate that resources with IDs 1 and 2 are used for channel measurement (joint channel). That is to say, the second indication information may not only indicate the number of resources actually used for channel measurement, but also indicate which resource is specifically used for channel measurement.
  • the default value of the value of the field of the second indication information may default to int type 1, that is, only one resource can be used for channel measurement, that is, there is no joint channel.
  • the UE may be pre-defined to select one resource for channel measurement in order from the smallest in the order of the resource ID, and other resources are used for interference measurement, and several CQIs are obtained.
  • the range of values of the domain of the second indication information may be the same as the number of resources available for channel measurement, for example, the base station and the UE may know the number of available channel resources, as shown in the above table, The domain can have two bits to indicate two resource IDs.
  • the resources that are not used for the channel measurement are used for the interference measurement, and the interference power corresponding to the strongest interference may be obtained by default, and may be separately configured by the base station, which is not limited herein.
  • the measurement result that the UE needs to report is indicated by a domain (indication information) as the first of all possible measurement results.
  • the first few here can be one or more values.
  • the first indication information indicates that the number of resources actually used for channel measurement is 1, and the UE can measure four possible CQIs.
  • This indication mode can save the signaling overhead reported by the UE in the case of more resource IDs and multiple IDs as channels.
  • the specific configuration information may be RRC signaling or DCI signaling.
  • the RRC signaling may be configured to include a resource having an ID of 1, 2, and 3 in the RS setting, and the IM setting includes a resource having an ID of 4, 5 (which may be simply referred to as a resource 4, 5), and the RRC signaling may further include the foregoing.
  • the second indication information optionally, the RRC signaling may further include the foregoing field for indicating that the measurement result that the UE needs to report is the first of all possible measurement results.
  • the field of the second indication information is included in the RS setting field, or in the RS-IMsetting field, or in the interference hypothesis setting field, where the interference hypothesis setting field can be
  • the RS setting field and the IM setting field are in a side-by-side relationship.
  • the new configuration content may be delivered by the RRC signaling again.
  • RRC signaling including RS setting, IM setting, second indication information field or other possible fields.
  • the configuration that needs to be changed is updated by DCI signaling.
  • the value of the second indication information field of the DCI signaling configuration is “2” to indicate the joint channel to measure two resource IDs.
  • the configuration of the base station is as shown in Table 7 below.
  • the physical meaning of the type is described in the following table:
  • the UE can learn that all resources need to be measured for channel measurement, and when the CQI is obtained, it may include 1/ (2+3+4+5), 2/(1+3+4+5), 3/(1+2+4+5) values in the three cases.
  • the numerator is the ID of the resource used for channel measurement
  • the denominator is the ID of the resource used for interference measurement. Two resources are excluded for channel measurement, such as (1+2)/(3+4+5).
  • the second indication information may be used to indicate the multiple measurement results that are required to be obtained.
  • multiple measurement results are required, and multiple measurement attributes may be configured, which may reduce signaling overhead. Therefore, a plurality of measurement results are utilized as a reference for the base station to make scheduling decisions.
  • the fifth mode may be combined with any one of the foregoing manners one to four or with any one of the manners one to three, the information of the resources for channel state information measurement including information of resources used for channel measurement and available for interference measurement.
  • the information of the resource, the configuration information further includes third indication information, which is used to indicate the number N of resources actually used for interference measurement, where N is an integer not less than 0.
  • the user equipment performs channel state information measurement according to the configuration information and feeds back the channel state information, including:
  • the measurement of channel state information for resources for channel measurement includes channel measurement of resources for channel measurement and interference measurement of the N resources.
  • the base station can be configured as shown in Table 8 below.
  • the specific physical meaning of the type is described in Table 1:
  • the number of resources actually used for the interference measurement indicated by the third indication information is 2, and the resource set indicating the interference measurement includes two resources for interference measurement, such as 3 and 4, 4 and 5, or, 3 and 5 .
  • the value of the field of the third indication information may be of the int type, such as "0", “1", “2", “3”, or may be a binary type, such as "00", "01", "10", "11".
  • the corresponding number of resources may be selected from the resources available for interference measurement according to the ID from small to large for interference measurement, thereby obtaining corresponding CQIs. .
  • Resources that are not used for interference measurement in resources that can be used for interference measurement can be used neither for interference measurement nor for channel measurement, ie, ignore.
  • the information may be further included to indicate that the CQI that the UE needs to report is the first of several CQIs obtained according to a certain rule. It can be understood that the first few here can be one or more values.
  • the optional third indication information may be included in the RRC signaling or the DCI signaling, for example, the domain of the third indication information is included in the IM setting field, or the RS-IMsetting field, or the interference hypothesis setting.
  • the interference hypothesis setting field may be in a side-by-side relationship with the RS setting field and the IM setting field. It can be understood that the domain in the embodiment of the present invention may include one or more than one cell.
  • the information of the resource for channel state information measurement includes information of resources available for channel measurement and may be used for interference measurement.
  • the information of the resource, the configuration information further includes second indication information and third indication information, where the second indication information is used to indicate the number M of resources actually used for channel measurement, and the third indication information is used to indicate that the information is actually used for interference.
  • the number N of measured resources where M is an integer not less than 1, and N is an integer not less than 0.
  • the user equipment performs channel state information measurement according to the configuration information and feeds back the channel state information, including:
  • the N resources that are actually used for the interference measurement are used for the measurement and feedback of the channel state information for the M resources that are actually used for channel measurement, and optionally, for the M resources actually used for channel measurement.
  • the measuring of the channel state information includes performing channel measurement on the M resources actually used for channel measurement and performing interference measurement on the N resources, or performing channel measurement on the M resources actually used for channel measurement and Performing interference measurement on the resources other than the M resources and the N resources in the resources available for channel state information measurement.
  • the seventh method may be independent of the manners one to six, or may be combined with any one of the manners one to three, the information of the resources for channel state information measurement including information of resources available for channel measurement and resources for interference measurement.
  • the information further includes fourth indication information for indicating the number Y, Y of the transmission set is an integer.
  • the user equipment determines, according to the number Y of transmission sets indicated by the fourth indication information, Z resources that are actually used for channel measurement in the resources that are available for channel measurement, and are used for actual channels.
  • performing measurement of channel state information for Z resources actually used for channel measurement includes: performing channel measurement on Z resources actually used for channel measurement, and removing resources from the resources available for channel state information measurement The resources other than the Z resources are used for interference measurement.
  • the configuration of the base station may be as shown in the following Table 9.
  • the physical meaning of the type may refer to the description in Table 1:
  • the number Y of the transmission set is 1, and the number of resources used for channel state information measurement included in one transmission set is 2, for example, the UE can know that the resources available for channel measurement are actually used for channel measurement.
  • the number of resources is 2.
  • the UE may perform channel measurement on two resources actually used for channel measurement and perform interference measurement on resources other than the two resources in the resources available for channel state information measurement, for example, (1+2)/ (3+4+5), (1+3)/(2+4+5), (1+4)/(2+3+5), (2+3)/(1+4+5), (2+4)/(1+3+5), (3+4)/(1+2+5).
  • the UE may also not measure resources that are not used for channel measurement, such as (1+2)/5, (1+3)/5, (1+4)/5, (2+3)/5, (2+4)/5 and so on.
  • the fourth indication information may be included in the high layer signaling, and may also be included in the physical layer signaling.
  • the fourth indication information may be included in the CSI measurement setting field or the CSI process, and further, may be included in the RS-setting. In the domain.
  • the eighth mode is independent or combined with any one of the methods 1 to 3.
  • the resources corresponding to the channel measurement in the measurement attribute include at least two, and the user equipment performs channel state information measurement according to the configuration information. And feeding back the channel state information includes:
  • the user equipment measures and feeds back channel state information for at least one of the at least two resources, the measuring comprising performing channel measurement on at least one of the at least two resources and on at least two resources other than performing channel measurement At least one resource other than the interference measurement.
  • the resources received by the UE for channel measurement are resources available for channel measurement, and various combinations of at least one of the resources available for channel measurement are performed to obtain corresponding measurement results.
  • resources not used for channel measurement may be used for interference measurements or not for measurement.
  • the resource for channel state information measurement may include a resource of NZP CSI-RS (referred to as NZP resource for short) and/or a resource of ZP CSI-RS ( Referred to as ZP resources).
  • the configuration information of whether the configuration information is an NZP resource or a ZP resource may be distinguished by a difference in a field (or a cell) included in the configuration information of the NZP resource and the ZP resource. Since the attribute of the ZP resource is certain, that is, interference, the measurement behavior of the ZP resource can be known.
  • the measurement behavior when the NZP resource is used for interference measurement is unique, that is, has an interference measurement attribute, and the measurement behavior of the ZP resource is also unique, such as measurement behavior on the NZP resource (interference measurement) Attribute) is the result of measuring the interference channel matrix and precoding matrix and multiplying the two as interference.
  • the measurement behavior (interference measurement attribute) on the ZP resource is the power information of the measurement interference, due to the configuration of the NZP CSI-RS.
  • the information and the configuration information of the ZP CSI-RS include different fields (or cells), and then the interference measurement attribute of the resource can be derived according to the number of fields of the resource.
  • the format of the configuration information of the NZP resource and the ZP resource (such as the location of the NZP resource and the ZP resource configuration information in the message, the size occupied, or the range of the identifier of the NZP resource, ZP)
  • the scope of the identification of the resource and the like are specifically defined to distinguish between the two (the specification does not exclude the specification from being particularly specified), and the number of the fields included in the configuration information may be distinguished by the number of fields included in the configuration information.
  • the interference measurement properties of each resource are determined.
  • the ZP configuration has three fields, and the NZP configuration has six fields. Since the resource allocation in the NR does not necessarily distinguish the two resources from the naming according to the NZP and the ZP, it may be called an interference measurement resource (IMR).
  • IMR interference measurement resource
  • One possible performance may be that the range of the two identifiers is Coincident, in this case, the number of fields of IMR1 and IMR2 is different, and it can be distinguished that IMR1 is NZP and IMR2 is ZP.
  • the measurement behavior according to NZP is unique, and the measurement behavior of ZP is also unique.
  • the measurement behavior on the NZP resource is the measurement of the interference channel matrix and the precoding matrix and the result of multiplying the two as interference.
  • the measurement behavior on the ZP resource is the power information of the measurement interference, and then the interference measurement attribute of each resource can be determined by distinguishing whether an IMR is an NZP or a ZP to determine the measurement behavior on the resource.
  • the configuration information of the ZP CSI-RS can be as follows.
  • the configuration information includes three fields:
  • the configuration information of the NZP CSI-RS may be as follows.
  • the configuration information includes six fields:
  • the UE may perform corresponding feedback according to a predefined rule when the corresponding CSI is fed back, or may perform corresponding feedback according to the indication of the base station.
  • the predefined rule may be feedback for the UE according to the size of the ID of the resource used for channel measurement, such as: min(min( ⁇ IDRS), min(IDRS)), ie, according to the minimum of the ID of the resource used for channel measurement.
  • min(min( ⁇ IDRS), min(IDRS)) ie, according to the minimum of the ID of the resource used for channel measurement.
  • the value, and the smaller of the sum of the sums of the IDs of the resources used for channel measurement, is based on the feedback of the CSI.
  • the feedback may be performed according to the size of the resource ID used for the interference measurement, such as: min(min( ⁇ IDIM), min(IDIM)), that is, according to the ID of the resource used for the interference measurement.
  • the minimum value of the minimum value of the sum of the IDs of the resources used for the interference measurement is based on the feedback of the CSI.
  • feedback of CSI is performed based on max(min( ⁇ IDRS), min(IDRS)) and/or max(min( ⁇ IDIM), min(IDIM)).
  • the feedback of the CSI can also be performed by other predetermined rules, which is not limited herein.
  • the CSI can feed back in an uplink data channel such as a Physical Uplink Shared Channel (PUSCH).
  • PUSCH Physical Uplink Shared Channel
  • the base station knows in advance how many possible CSIs are available, and may reserve a corresponding number of bits in the uplink data channel for CSI detection.
  • the CSIs are sorted according to a predefined, and the CSI is fed back to the base station through the uplink data channel.
  • each CSI is fed back on an uplink control channel, such as a physical uplink control channel (PUCCH), according to a defined period plus a respective offset.
  • an uplink control channel such as a physical uplink control channel (PUCCH)
  • the CQI offset can be configured by the cqi-pmi-ConfigIndexList cell in the RRC signaling, as follows:
  • the UE may sequentially feed back according to the corresponding period and offset on the uplink control channel according to a preset sequence.
  • the UE can learn the measurement attribute of the corresponding resource used for CSI measurement. And some indications of the base station can be used to know how to use these resources for CSI measurement to obtain corresponding CSI measurement results. More CSI measurement results can be obtained with less overhead, thereby supporting various transmission schemes of the base station, or improving the efficiency of communication with the UE under a certain transmission scheme.
  • the embodiment of the present invention provides another method for measuring channel state information, including:
  • a user equipment receives configuration information for measurement of channel state information from a wireless network device, where the configuration information includes information of resources available for measurement of channel state information.
  • the user equipment performs channel state information measurement according to the configuration information, and feeds back the channel state information and measurement attribute information of a resource for channel state information measurement corresponding to the channel state information, where the measurement
  • the attributes include channel measurements, or X types of interference measurements, or channel measurements and X types of interference measurements, where X is an integer not less than one.
  • the wireless network device sends configuration information for channel state information measurement to the user equipment, where the configuration information includes information of resources available for channel state information measurement; receiving channel state information and channel state information fed back by the user equipment.
  • the measurement attribute information of the resource for channel state information measurement includes channel measurement, or X kinds of interference measurement, or channel measurement and X type interference measurement, where X is an integer not less than 1,
  • the resources used for channel state information measurement are all or part of the resources available for channel state information measurement.
  • the X interference measurement comprises: measuring interference (such as interference power) by using a reference signal of zero power, and acquiring the strongest P interference by using resources of the channel state information reference signal of non-zero power (where P is configurable or For protocol reservations, no configuration is required, using the resources of the channel state information reference signal of non-zero power to obtain the weakest Q interferences (where Q is configurable or not required for protocol reservation), using channel state information reference signals of non-zero power
  • the resource acquires interference that is not precoded (omnidirectional interference), and uses the resource of the channel state information reference signal of the non-zero power to acquire all interferences of all selectable precoding matrices in the available codebook, using non-zero power
  • the resource of the channel state information reference signal acquires interference corresponding to a non-strongest or weakest specific precoding matrix (W), and acquires at least one of precoded interference using a demodulation reference signal of non-zero power.
  • the measurement attribute information of the resource for channel state information measurement corresponding to the channel state information includes a number of bits, each of the bits is used to indicate a measurement attribute of each of the resources.
  • the UE feeds back a CSI and corresponding measurement attribute information, such as 11000, indicating that the CSI is used for channel measurement in the first two bits, and the resources corresponding to the last three bits are used for interference measurement. of.
  • the measurement attribute of the resource corresponding to the CSI fed back by the UE may be determined by using a correspondence between the transmission scheme and the CSI feedback.
  • the transmission scheme includes NCJT (non-coherent joint transmission), CS/CB (coordinated scheduling and beamforming), DPS (dynamic point selection) or DPB (dynamic point) Blanking, dynamic point off), etc.
  • the UE may separately calculate respective CQIs for the resources corresponding to the CSI measurement corresponding to the two TRPs, and calculate the measurement result of the NZP resource of the other TRP by default for one CQI. (ie NZP resources are used for interference measurements).
  • the measurement attribute information of the resource for channel state information measurement corresponding to the above channel state information may be included in a CSI reporting setting field.
  • the foregoing transmission scheme may be configured in a tranmission scheme setting field.
  • the method shown in FIG. 1 or FIG. 3 above can be applied to a MU-MIMO (multi-user multiple input multiple output) scenario or a collaboration scenario.
  • MU-MIMO multi-user multiple input multiple output
  • a possible solution in the MU-MIMO scenario is: when the serving base station schedules multiple user equipments, each user is configured with different measurement resources.
  • a user equipment is configured with multiple resources, some resources are used for channel measurement, and some resources are used for interference measurement. These resources can be distinguished by different types.
  • Another possible solution is that multiple user equipments are scheduled to use the same measurement resources, and the measurement results on these resources can be used as channels or as interference in different CSI reports.
  • a possible solution in a cooperative scenario is: when one UE is scheduled by multiple base stations, different base stations can use the same measurement resource or different measurement resources when configuring measurement resources for the UE. Then, one UE can detect two different CQIs on the same resource, corresponding to two cooperative base stations (for example, two cooperative base stations).
  • one NZP resource can be regarded as a channel or can be regarded as interference.
  • One NZP resource can be configured as Type 0 (channel) in one CSI report calculation and Type 1 (interference) in another CSI report calculation. If two base stations call different measurement resources, two CQIs are measured on one UE on two sets of measurement resources.
  • the method proposed in the embodiment of the present invention is not limited to the foregoing MU-MIMO or the collaboration scenario, and may be applied to other scenarios, which is not limited herein.
  • the corresponding CSI can be measured under different interference assumptions (that is, the same resource can be used for channel measurement and also for interference measurement), thereby enabling the base station to select a more accurate according to the CSI measurement result. Transmission set.
  • the embodiment of the present invention is described by using a scenario of a 4G network in a wireless communication network as an example. It should be noted that the solution in the embodiment of the present invention may also be applied to other wireless communication networks, and corresponding names may also be used. Replace with the name of the corresponding function in other wireless communication networks.
  • the method or device in the embodiment of the present invention may be applied between a base station and a user equipment, and may also be applied between a base station and a base station (such as a macro base station and a micro base station), and may also be applied to user equipments and users.
  • a base station and a base station such as a macro base station and a micro base station
  • user equipments and users may also be applied to user equipments and users.
  • Between devices such as D2D scenarios), in all embodiments of the present invention, communication between a base station and a UE is taken as an example for description.
  • FIG. 4 is a simplified schematic diagram showing the internal structure of the above base station and UE.
  • Exemplary base stations may include an antenna array, a duplexer, a transmitter (TX), and a receiver (RX) (sometimes, TX and RX are collectively referred to as transceiver TRX), and a baseband processing portion.
  • the duplexer is used to implement the antenna array for both transmitting signals and receiving signals.
  • TX is used to convert between RF signal and baseband signal.
  • TX can include power amplifier PA, digital-to-analog converter DAC and frequency converter.
  • RX can include low noise amplifier LNA, analog-to-digital converter ADC and frequency converter.
  • the baseband processing section is used to implement processing of transmitted or received signals, such as layer mapping, precoding, modulation/demodulation, encoding/decoding, etc., and for physical control channels, physical data channels, physical broadcast channels, reference signals, etc. Perform separate processing.
  • the base station may further include a control portion for performing multi-user scheduling and resource allocation, pilot scheduling, user physical layer parameter configuration, and the like.
  • Exemplary UEs may include an antenna, a duplexer, a transmitter (TX), and a receiver (RX) (sometimes, TX and RX are collectively referred to as transceiver TRX), and a baseband processing portion.
  • TX transmitter
  • RX receiver
  • the UE has a single antenna. It can be understood that the UE can also have multiple antennas (ie, an antenna array).
  • the duplexer is used to implement the antenna array for both transmitting signals and receiving signals.
  • TX is used to convert between RF signal and baseband signal.
  • TX can include power amplifier PA, digital-to-analog converter DAC and frequency converter.
  • RX can include low noise amplifier LNA, analog-to-digital converter ADC and frequency converter.
  • the baseband processing section is used to implement processing of transmitted or received signals, such as layer mapping, precoding, modulation/demodulation, encoding/decoding, etc., and for physical control channels, physical data channels, physical broadcast channels, reference signals, etc. Perform separate processing.
  • the UE may further include a control part, configured to request an uplink physical resource, calculate channel state information (CSI) corresponding to the downlink channel, determine whether the downlink data packet is successfully received, or the like.
  • CSI channel state information
  • an embodiment of the present invention further provides an apparatus for channel state information measurement, which may be a wireless device 10.
  • the wireless device 10 can correspond to a first wireless network device of the above methods.
  • the first wireless network device may be a base station or other devices, which is not limited herein.
  • the apparatus can include a processor 110, a memory 120, a bus system 130, a receiver 140, and a transmitter 150.
  • the processor 110, the memory 120, the receiver 140 and the transmitter 150 are connected by a bus system 130 for storing instructions for executing instructions stored in the memory 120 to control the receiver 140 to receive.
  • Signaling, and controlling the transmitter 150 to transmit a signal completes the steps of the wireless network device (e.g., base station) in the above method.
  • the receiver 140 and the transmitter 150 may be the same or different physical entities. When they are the same physical entity, they can be collectively referred to as transceivers.
  • the memory 220 may be integrated in the processor 210 or may be provided separately from the processor 210.
  • the functions of the receiver 140 and the transmitter 150 can be implemented by a dedicated chip through a transceiver circuit or a transceiver.
  • the processor 110 can be implemented by a dedicated processing chip, a processing circuit, a processor, or a general purpose chip.
  • a wireless device provided by an embodiment of the present invention may be implemented by using a general-purpose computer.
  • the program code that is to implement the functions of the processor 110, the receiver 140 and the transmitter 150 is stored in a memory, and the general purpose processor implements the functions of the processor 110, the receiver 140 and the transmitter 150 by executing the code in the memory.
  • the embodiment of the present invention further provides another apparatus for channel state information measurement, and the apparatus may be a wireless device 20, where the wireless device 20 corresponds to the first user equipment in the foregoing method.
  • the second wireless device may be a UE, or may be a micro base station or a small base station, which is not limited herein.
  • the apparatus can include a processor 210, a memory 220, a bus system 230, a receiver 240, and a transmitter 250.
  • the processor 210, the memory 220, the receiver 240 and the transmitter 250 are connected by a bus system 230 for storing instructions for executing instructions stored in the memory 220 to control the receiver 240 to receive.
  • the signal is transmitted, and the transmitter 250 is controlled to transmit a signal to complete the steps of the UE in the above method.
  • the receiver 240 and the transmitter 250 may be the same or different physical entities. When they are the same physical entity, they can be collectively referred to as transceivers.
  • the memory 220 may be integrated in the processor 210 or may be provided separately from the processor 210.
  • the functions of the receiver 240 and the transmitter 250 can be implemented by a dedicated chip through a transceiver circuit or a transceiver.
  • the processor 210 can be implemented by a dedicated processing chip, a processing circuit, a processor, or a general purpose chip.
  • a wireless device provided by an embodiment of the present invention may be implemented by using a general-purpose computer.
  • the program code that is to implement the functions of the processor 210, the receiver 240 and the transmitter 250 is stored in a memory, and the general purpose processor implements the functions of the processor 210, the receiver 240, and the transmitter 250 by executing code in the memory.
  • the embodiment of the present invention further provides a communication system, including the foregoing first wireless network device and one or more user devices.
  • the processor 110 or 210 may be a central processing unit ("CPU"), and the processor may also be other general-purpose processors, digital signal processors (DSPs). , an application specific integrated circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, and the like.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the memory 120 or 220 can include read only memory and random access memory and provides instructions and data to the processor 310.
  • a portion of the memory may also include a non-volatile random access memory.
  • the memory can also store information of the device type.
  • the bus system 130 or 230 may include a power bus, a control bus, a status signal bus, and the like in addition to the data bus. However, for the sake of clarity, the various buses are labeled as bus systems in the figure.
  • each step of the above method may be completed by an integrated logic circuit of hardware in the processor 110 or 210 or an instruction in the form of software.
  • the steps of the method disclosed in the embodiments of the present invention may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory, and the processor reads the information in the memory and combines the hardware to complete the steps of the above method. To avoid repetition, it will not be described in detail here.
  • the size of the sequence numbers of the above processes does not mean the order of execution, and the order of execution of each process should be determined by its function and internal logic, and should not be taken to the embodiments of the present invention.
  • the implementation process constitutes any limitation.
  • the disclosed systems, devices, and methods may be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product.
  • the technical solution of the present invention which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including
  • the instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .
  • the present application also provides an embodiment for the configuration and/or triggering of channel state information and the process of reporting.
  • the schemes described in the following embodiments may be used alone or in combination with any one or more of the solutions described in the foregoing application, for example, in the whole process of channel state information configuration, measurement, and reporting,
  • the channel state information measurement method is used to complete the measurement of the channel state information
  • the channel state information reporting method is used to complete the triggering of the channel state information reporting or Configure and complete the reporting of channel status information.
  • multiple network devices may cooperate to provide data transmission for the UE.
  • the UE may obtain channel state information of multiple network devices by measurement, and The channel state information is reported to at least one of the plurality of network devices for cooperation and scheduling between the plurality of network devices.
  • the network side eg, the serving network device
  • configures the UE for the UE for example, TRP1 in order to determine whether the two network devices are suitable for cooperation.
  • the channel state information measurement configuration one channel state information measurement configuration is based on TRP1, and the network devices to be cooperative (for example, TRP2) are interferences in the cooperation set.
  • the other channel state information measurement configuration is based on TRP2, and TRP1 is the interference in the cooperative set.
  • the two channel state information measurement configurations respectively obtain one channel state information measurement result.
  • TRP1 needs to obtain the measurement results of the two channel state information reported by the UE, so as to know the two channel conditions when TRP1 and TRP2 are NCJT, and determine the system throughput when TRP1 and TRP2 are NCJT, thereby judging or determining the cooperation and scheduling situation.
  • the UE may also obtain channel state information of other network devices for which data transmission is not provided, and the channel state information may be reported to the network device that provides data transmission for the UE as a result of the interference measurement, so that the network devices can Collaboration and scheduling.
  • TRP2 is the interference source of the UE, and the interference received by the UE can be reduced by quieting TRP2.
  • TRP1 can configure two channel state information measurement configurations for the UE.
  • One channel state information measurement configuration considers TRP2 interference, and the other channel state information measurement configuration considers that TRP2 silence does not interfere with the UE.
  • the UE After receiving the measurement information of the two channel state information, the UE measures the channel state information measurement result of the TRP2 interference and reports it to the TRP1, so that the TRP1 can determine the amount of channel quality change after the TRP2 is silent, and is in the scheduling. Reflect whether TRP2 is silent.
  • the network device When the UE needs to report multiple channel state information, the network device usually needs to receive the multiple channel state information as soon as possible, so as to synthesize all the information for cooperation and scheduling at the next moment. Therefore, a triggering and reporting manner of channel state information is needed to minimize the delay between reporting of multiple channel state information, so that the network device can utilize multiple channel state information for cooperation and scheduling as soon as possible.
  • the embodiment of the present application provides a communication system, which may include at least one network device and at least one UE.
  • the network device may be a device on the access network side for supporting the UE to access the system, such as a base station (BS), a relay node, an access point (AP), and a sending and receiving point. (transmission reception point, TRP) and the like.
  • the base station may be a macro base station, a micro base station, a home base station, or the like.
  • the network device can be fixed or mobile.
  • the UE may be referred to as a terminal, a mobile station, a subscriber unit, a station, or the like.
  • the UE can be a cellular phone, a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld, a laptop computer, a cordless phone (cordless) Phone), wireless local loop (WLL) station, tablet (pad), etc.
  • PDA personal digital assistant
  • the device that can access the wireless communication network can communicate with the wireless network system side, or communicate with other objects through the wireless network, can be the UE in the embodiment of the present application, for example, in intelligent transportation.
  • the UE may communicate with a network device.
  • the UE may be static or mobile.
  • the embodiment of the present application provides a communication system 100.
  • the communication system 100 includes at least one network device and at least one user device.
  • the UE communicates with the network device through the wireless interface, and can also communicate with another UE, such as a D2D (Device to Device) or M2M (Machine to Machine) scenario.
  • the network device can communicate with the UE or with another network device, such as a communication between the macro base station and the access point.
  • one network device may provide communication services for one or more UEs, for example, the network side device 22 provides communication services for the UE 42; one UE may also communicate with multiple network devices on the same carrier, for example The UE 40 can simultaneously receive the downlink data transmitted by the network device 20, the network device 22, and the network device 24 on the same carrier.
  • the communication system 100 includes, but is not limited to, for example, code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), and positive Orthogonal frequency-division multiple access (OFDMA), single carrier frequency division multiple access (SC-FDMA) system, and other networks, for example, 3GPP long term evolut ion (LTE)
  • CDMA code division multiple access
  • TDMA time division multiple access
  • FDMA frequency division multiple access
  • OFDMA positive Orthogonal frequency-division multiple access
  • SC-FDMA single carrier frequency division multiple access
  • LTE 3GPP long term evolut ion
  • a system for further evolution of the system or a new radio access technology system (which may be simply referred to as an "NR" system), or a 5G system developed by a standards organization or any next generation system.
  • NR new radio access technology system
  • 5G developed by a standards organization or any next generation system.
  • network and “system” are interchangeable in the embodiments of the present invention.
  • UTRA can include variants of CDMA (WCDMA) and other CDMA.
  • CDMA2000 can cover interim standard (IS) 2000 (IS-2000), IS-95 and IS-856 standards.
  • the TDMA network can implement a wireless technology such as a global system for mobile communication (GSM).
  • GSM global system for mobile communication
  • An OFDMA network may implement such as evolved universal radio terrestrial access (evolved UTRA, E-UTRA), ultra mobile broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash OFDMA And other wireless technologies.
  • UTRA and E-UTRA are UMTS and UMTS evolved versions.
  • 3GPP Long Term Evolution (LTE) and LTE Advanced (LTE-A) are new releases of UMTS that use E-UTRA.
  • UTRA, E-UTRA, UMTS, LTE, LTE-A, and GSM are described in the documentation of the 3GPP standards organization.
  • CDMA2000 and UMB
  • the channel state information (CSI) described in this application is information for reporting channel and/or interference measurement results.
  • the CSI may include a rank indication (RI), a prediction matrix indication (PMI), a channel quality indicator (CQI), and a CSI-RS resource indicator. , CRI) and at least one of a precoding type indicator (PTI).
  • the CSI may include a CSI that is periodically reported, a CSI that is periodically reported, or a CSI that is semi-persistently reported.
  • the non-periodic reporting CSI is reported according to the trigger of the network device.
  • the periodically reported CSI is reported according to the reporting period configured by the network device.
  • the semi-statically reported CSI is periodically reported in a certain period of time according to the reporting period configured by the network device and the trigger of the network device, and is not reported outside the time period.
  • the semi-statically reported CSI can be reported to be activated/deactivated by the signaling. After receiving the activation signaling, the terminal reports the reported reporting period and the offset. After receiving the deactivation signaling, the terminal stops reporting.
  • a CSI described in this application refers to a CSI reported after measuring a CSI measurement resource. Or, it refers to the CSI reported after measuring a channel state information reference signal resource (CSI-RS resource). Or, it refers to the CSI reported according to a CSI reporting setting information.
  • the CSI that is reported aperiodically is the CSI that is reported once after the measurement of one CSI measurement resource.
  • the CSI that is periodically reported is the CSI that is periodically reported after the measurement of one CSI measurement resource.
  • a CSI that is reported in a semi-static manner is a CSI that is periodically reported multiple times after measuring a CSI measurement resource in a certain period of time. Therefore, a CSI in the present application can also be understood as a set of CSI.
  • the CSI in the set of CSIs includes a CSI reported once, periodically reported or semi-statically reported.
  • the set of CSIs includes CSIs that are reported multiple times.
  • the "CSI reporting" and the “CSI feedback” described in the present application may be mutually replaced, and both refer to a process in which the UE sends the CSI to the network device, and the process may also include the process of triggering or configuring the CSI reporting.
  • the "information information” described in this application may include signaling or information of different layers. For example, it may include layer 1 (layer 2), layer 2 (layer 2) or layer 3 (layer 3) signaling or information.
  • the layer 1 generally refers to a physical layer
  • the layer 2 generally refers to a medium access control (MAC) layer
  • the layer 3 generally refers to a radio resource control (RRC) layer.
  • the indication information may be DCI information of a physical layer, or a MAC control element (MAC CE) of a MAC layer, or RRC signaling of an RRC layer.
  • the “carrier” described in this application corresponds to a specific frequency band, for example, a frequency band of 1.8 GHz or a frequency band of 28 GHz.
  • a beam as used in the present application refers to a radio wave having a certain direction and shape in a space formed when a wireless signal is transmitted or received by at least one antenna port.
  • the beam may be formed by weighting the amplitude and/or phase of the data transmitted or received by the at least one antenna port, or may be formed by other methods, such as adjusting the relevant parameters of the antenna unit.
  • the beam can be understood as a spatial resource, which can refer to a transmit or receive precoding vector or precoding matrix with energy transmission directivity, and the transmit or receive precoding vector or precoding matrix can be identified by index information.
  • the energy transmission directivity may be that, after receiving a precoding process through the precoding vector or the precoding matrix, the received signal has good receiving power, such as satisfying the receiving demodulation signal to noise ratio, etc., in a certain spatial position. Energy transmission directivity may also mean that receiving the same signals transmitted from different spatial locations through the precoding vector or precoding matrix has different received powers.
  • the same wireless communication device (such as a user equipment or a network device) may have different precoding vectors or precoding matrices. Different devices may also have different precoding vectors or precoding matrices, that is, corresponding to different beams.
  • a wireless communication device can use one or more of a plurality of different precoding vectors or precoding matrices at the same time, that is, one or more beams can be formed at the same time.
  • the beam pair described in the present application includes a transmit beam at the transmitting end and a receive beam at the receiving end, or includes an uplink beam or a downlink beam.
  • the beam pair may include a transmit beam of the base station and a receive beam of the UE, or a transmit beam of the UE and a receive beam of the base station.
  • the beam may be identified by index information (eg, index information of a precoding vector or index information of a precoding matrix).
  • the index information may correspond to or include a resource identifier (ID) configured to the UE.
  • the index information may be a channel status information reference signal (CSI-) configured to the UE.
  • the ID or resource of the RS) may also be the ID or resource of the configured Sounding Reference Signal (SRS).
  • the index information may also be index information of a signal or channel display or implicit bearer carried by the beam, for example, the index information may be a synchronization signal sent by a beam or a broadcast channel indicating the beam. Index information.
  • the beam may be identified by the CSI-RS resource number and/or the antenna port number used to transmit or receive the beam; it may also be identified by using a beam pair number or a beam pair index; a synchronization signal block time may also be used (synchronization signal block time) Index, SS block time index) to identify.
  • a synchronization signal block time may also be used (synchronization signal block time) Index, SS block time index) to identify.
  • the specific indication or the manner of identification of the beam is not limited in this application.
  • the "antenna port(s)" described in the present application is a different logical port defined to distinguish different channels, and the channel through which the symbol transmitted on one antenna port passes may be based on the same antenna. The channel through which the other symbols sent on the port pass is determined.
  • the data receiving end may perform channel estimation by using a DM-RS (Demodulation-Reference Signal) transmitted on the same antenna port as that used to transmit the data. Data demodulation.
  • DM-RS Demodulation-Reference Signal
  • the "antenna port number" described in this application is used to indicate a specific antenna port, for example, an antenna port number of 7 indicates an antenna port 7.
  • FIG. 8 is a flowchart of a CSI reporting method according to an embodiment of the present disclosure.
  • the network device sends an indication message to the user equipment, where the indication information is used to indicate the reporting of the K CSIs, where K ⁇ 2, the K CSIs are user equipments performing measurement resources on the same carrier. Measured obtained.
  • the network device may be a serving network device of the user equipment.
  • the K CSIs may be K non-periodicly reported CSIs, or may be K periodically reported CSIs, or may be K semi-statically reported CSIs.
  • the indication information may be physical layer signaling, for example, downlink control informatization (DCI).
  • the indication information may be RRC signaling, for example, signaling for configuring CSI that is periodically reported.
  • the indication information may also be other signaling or information of the physical layer or the RRC layer, or may be signaling or information of other layers, such as the MAC CE of the MAC layer. This application does not limit the type and name of the indication information. It does not limit the indication information corresponding to different CSIs. It can be designed according to system requirements.
  • the user equipment reports the K CSIs on the same carrier.
  • the K CSIs may be reported at the same time or may be reported in a time-sharing manner.
  • the delay caused by multiple CSI triggers can be reduced, so that the network device can obtain more CSIs faster, so that Multiple CSIs collaborate and/or schedule.
  • the time required for the network device to acquire K CSIs may be further shortened, so as to cooperate and/or schedule according to more CSIs as soon as possible.
  • the indication information is used to trigger the reporting of the K CSIs when the K CSIs are CSIs or K semi-statically reported CSIs.
  • the user equipment After receiving the indication information, the user equipment performs measurement and reporting of CSI.
  • the indication information includes index information that includes the K CSI reporting sets in the indication information.
  • the CSI report configuration index indicates a specific CSI report configuration information that is configured for the UE.
  • the CSI report configuration information may include a CSI parameter (reported CSI parameter(s)), a CSI type (CSI type), and a codebook configuration. Codebook configuration) At least one of information, time-domain behavior, frequency granularity of CQI and PMI.
  • the user equipment determines a specific CSI report configuration according to the index of the CSI report configuration, and performs CSI measurement and reporting according to the CSI report configuration.
  • the index information of the CSI report configuration may be the value information of the CSI report configuration index, or other information used to determine the CSI report configuration index.
  • the CSI reporting configuration to be instructed is related to a certain CSI measurement setting or a link setting
  • the CSI measurement configuration or the link configuration may be instructed to indicate the CSI reporting configuration index.
  • the CSI measurement configuration or the link configuration information is used to determine the CSI measurement configuration index included in the CSI measurement configuration or the link configuration, thereby determining the CSI. Report configuration information and complete measurement and reporting of CSI.
  • the indication information includes index information of a CSI reporting configuration group to which the K channel state information belongs.
  • the CSI reporting configuration group refers to a set including at least one CSI reporting configuration.
  • the index of the configuration group reported by the CSI indicates the specific CSI report configuration group.
  • the network device may notify the UE of the specific CSI to report the configured packet information, and then indicate in the indication information which CSI reports the CSI in the configuration group.
  • the network device may configure the CSI to report the configured packet in the high-layer signaling (eg, RRC signaling).
  • the network device configures the CSI reporting setting set 1 by using the RRC signaling, including the CSI reporting configuration 1 (CSI reporting setting 2) and CSI reporting setting 2, CSI reporting setting 2 includes CSI reporting setting 1 and CSI reporting setting 3, CSI reporting
  • the CSI reporting setting set 3 includes a CSI reporting setting 2 and a CSI reporting setting 3.
  • the network device indicates, by using the indication information (eg, DCI), that the CSI reports an index of the configuration set, thereby triggering reporting of CSI in at least one of the foregoing sets.
  • Table 10 shows a specific cell design. The cell "CSI request" is included in the indication information to indicate that the CSI reports the configuration set.
  • the CSI reporting setting set 1 includes the CSI reporting setting 1 and the CSI reporting setting 2 includes the CSI reporting configuration 2 (CSI reporting configuration 2).
  • Setting 2) CSI reporting setting set 3 includes CSI reporting setting 3 (CSI reporting setting 3).
  • the network device triggers reporting of the CSI in the at least one of the foregoing sets by using the indication information (eg, DCI).
  • the indication information eg, DCI.
  • Table 11 shows a specific cell design, the cell "CSI request" being included in the indication information for indicating the CSI reporting configuration set.
  • the index of the CSI reporting configuration group may be indicated to the UE by using other information.
  • the CSI measurement configuration group or the link configuration group may be indicated by the CSI measurement configuration or the link configuration group. .
  • the network device may configure the CSI measurement configuration packet in the high layer signaling (eg, RRC signaling), for example, the network device configures the CSI measurement setting set 1 through the RRC signaling, including the CSI measurement configuration 1 (CSI measurement setting 1) and CSI measurement setting 2, CSI measurement setting 2 includes CSI measurement setting 1 and CSI measurement setting 3, CSI measurement
  • the CSI measurement setting set 3 includes a CSI measurement setting 2 and a CSI measurement setting 3.
  • the network device indicates the index of the CSI measurement configuration set by using the indication information (eg, DCI), so as to trigger the reporting of the CSI in the CSI reporting configuration included in the at least one of the foregoing sets.
  • the indication information eg, DCI
  • Table 12 gives a specific cell design, the cell "CSI request" being included in the indication information for indicating a CSI measurement configuration set.
  • the user equipment may determine the currently configured CSI measurement configuration set according to the indication, and determine the CSI report configuration index included in the CSI measurement configuration according to the CSI measurement configuration index included in the CSI measurement configuration set. Further, the CSI reporting configuration information that needs to be reported is obtained.
  • the indication information only needs to include the index information of the CSI report configuration, and does not need to include the specific CSI report configuration information, thereby saving signaling overhead.
  • the reporting of the K CSIs may be performed by using the foregoing two methods. For example, a part of the CSI reports the index information of the CSI report configuration, and another part of the CSI reports the index information of the CSI report configuration group to which they belong. .
  • the indication that the K CSIs are reported may be jointly performed with the indications of other types of CSI reports (for example, CSI reporting in a carrier aggregation scenario) in the prior art.
  • a cell may be used in the indication information, and different CSI reports are indicated by using different values in the cell.
  • Table A shows an example of a specific cell design. The two states of '10' and '11' in Table A can trigger a CSI report configuration set when multiple carriers are used, that is, one CSI report configuration set. The included CSI reports can be performed on different CCs.
  • the '01' state indicates that one CSI reporting configuration set is triggered on one carrier, that is, the CSI reporting included in the CSI reporting configuration set is on the same carrier.
  • the indication information includes T CSI reporting timing offset information, and the T CSI reporting timings.
  • the offset is used for the reporting of the K CSIs, where T is an integer greater than or equal to 2, and the CSI reporting timing offset refers to a time interval between CSI reporting and CSI reporting.
  • the CSI reporting timing offset may be in units of time slots, or may be in other time domain resource units, which is not limited in this application.
  • the network device may implement time division of the K CSIs by configuring different timings of CSI reporting timings for the K CSIs.
  • FIG. 8b shows a schematic diagram of the CSI reporting process corresponding to this example.
  • the network device indicates, by means of an indication, that the user equipment reports K CSIs (part 801).
  • the user equipment measures the CSI according to the CSI that needs to be reported in the indication information, and according to the CSI reporting timing offset value indicated in the indication information, respectively, on the same carrier, at different times.
  • the K CSIs (8021 to 802K parts) are reported.
  • the K CSIs may correspond to K different CSI reporting timing offset values, or may correspond to less than K different CSI reporting timing offset values, where at least two of the K CSI reports are reported.
  • the CSI reports the same CSI report timing offset value, that is, reports at the same time.
  • the network device and the user equipment may pre-arrange the CSI reporting the timing offset value of the packet, for example, pre-configure the specific CSI reporting timing offset value packet by using high layer signaling (such as RRC signaling), and then In the indication information, it is indicated which specific CSI reporting timing offset value the user equipment currently needs to use.
  • the first group CSI reporting timing offset value is ⁇ 1, 4 ⁇
  • the second group CSI reporting timing offset value is ⁇ 2, 4 ⁇
  • the third group CSI reporting timing offset value is ⁇ 1, 3 ⁇ .
  • Table 13 and Table 14 respectively present two specific cell design methods for indicating the CSI reporting timing offset value, wherein Table 13 is a separate indication of the CSI reporting timing offset in the indication information.
  • the value of the fourteen bits in the indication information is jointly indicated by the CSI reporting configuration group and the CSI reporting timing offset value.
  • the network device may further configure a plurality of time-frequency domain resources for reporting the CSI for the user equipment, for example, the indication information may further include at least one for reporting.
  • CSI time-frequency domain resource configuration information The user equipment reports the timing offset value according to the CSI, and reports the at least one of the K CSIs by using different time-frequency domain resources at different times.
  • the indication information is used to configure the reporting of the K CSIs when the K CSIs are periodically reported CSIs.
  • the user equipment After receiving the indication information, the user equipment performs periodic CSI reporting according to the indication information.
  • the indication information includes at least one of index information, report period information, and subframe offset configuration information of the K channel state information report configuration.
  • the K periodically reported CSIs may have the same or different reporting periods, or may have the same or different reported subframe offset configurations. When the C periodicly reported CSIs have the same reporting period and the same reporting subframe offset configuration, the K periodically reported CSIs are reported at the same time.
  • the indication information in the embodiment of the present application may further include beam information, where the beam information is used to indicate a beam used to report the K channel state information, where the beam information indicates L beams, L is an integer greater than or equal to 1, and each of the L beams is used to report the K channel state information.
  • the user equipment sends the K CSIs using one configured beam.
  • the K CSIs may be simultaneously transmitted, that is, the K beams are simultaneously transmitted by using the configured beams; the K CSIs may also be sent in a time-sharing manner, that is, using one configured beam, the Ks are respectively sent at different times. CSI.
  • the UE 40 reports the K CSIs to the network device 22 and the network device 24, where the beam 1 is directed to the network device 22 and the beam 2 is directed to the network device 24, that is, the UE 40 reports the K CSIs to the network using the beam 1.
  • the device 22 reports the K CSIs to the network device 24 by using the beam 2.
  • the user equipment reports the K CSIs by using different beams, and can report multiple CSIs to different network devices, and improve the probability that different network devices correctly receive the K CSIs.
  • Multiple CSIs can reduce the time for information transmission between network devices, for example, saving the time required for CSI information to be transferred between network devices, so as to facilitate cooperation and scheduling between network devices.
  • the plurality of network devices that receive the K CSIs by the receiving user equipment may include the serving network device and the cooperative network device, or may be all the cooperative network devices.
  • the serving network device refers to a network device that provides a high-level connection (such as an RRC layer connection) for the user equipment.
  • the UE performs an initial connection establishment process in a cell provided by the serving network device, or starts a connection re-establishment process.
  • a collaborative network device is a non-serving network device that provides data transmission for user equipment.
  • the indication information used to indicate the K CSI reports in the application may be sent by the serving network device, or may be provided by the cooperative network device.
  • the beam information may be uplink beam information, for example, a sounding reference signal resource indication (SRI), or may be downlink beam information, such as a CSI-RS resource indication (CSI-RS).
  • SRI sounding reference signal resource indication
  • CSI-RS resource indication
  • Resource indication (CRI) when the beam information is downlink beam information, the user equipment may determine the used uplink beam by combining the indicated downlink beam information and beam pair information.
  • the network device and the user equipment may pre-arrange the grouping of the beam, for example, pre-configure a specific beam packet by higher layer signaling (such as RRC signaling), and then indicate in the indication information that the user equipment currently needs Which specific set of beams is used.
  • the first set of SRIs is defined as ⁇ SRI1, SRI2 ⁇
  • the second set of SRIs is ⁇ SRI2, SRI3 ⁇
  • the third set of SRIs is ⁇ SRI1, SRI3 ⁇ .
  • Tables 15 and 16 show the specific cell designs for the two indicator beam groups, respectively, where Table 15 shows the beam groups used alone in the indication information, and the table 16 bits are indicated. The information indicates that the CSI reports the configuration group and the beam group used.
  • the use of each beam is the same as when a single beam is used to report K CSIs.
  • the K CSIs reported on one beam can be reported in a time-sharing manner, or can be reported at the same time. The specific implementation manner is as described above and will not be described again.
  • time-division reporting one or more of the K CSIs may be reported by using multiple beams at a certain time, and another one or more of the K CSIs may be reported by using multiple beams at another time.
  • the L beams may also be sent by using the same or different time domain resources.
  • the L beams can be transmitted using the same time domain resource and different frequency domain resources. At this time, the L beams are transmitted simultaneously using different frequency domain resources, and each beam includes a report of K CSIs.
  • the selection of different frequency domain resources can be designed according to requirements. For example, all subcarriers with an even subcarrier number are a set of frequency domain resources, and all subcarriers with an odd subcarrier number are another set of frequency domain resources; The consecutive x subcarriers are a set of frequency domain resources. As shown in Figure 10a, two beams are transmitted simultaneously using different frequency domain resources.
  • the L beams may be transmitted using different time domain resources, and each beam includes K CSI reports, and the frequency domain resources used by each beam may be the same or different.
  • Different time domain resource usage patterns and divisions can be designed according to the specific needs of the system. For example, in symbol (symbol), all symbols with odd symbol numbers are used to send one beam, and all symbol numbers are even.
  • the symbols are a group for transmitting another beam. For example, a continuous set of y symbols is used to transmit one beam, and a certain symbol or time slot interval may be set between each successive y symbols.
  • frequency domain resources refer to the scheme in the previous example, and details are not described here. As shown in FIGS.
  • FIG. 10b and 10c two specific examples of using different time domain resources to transmit different beams are given.
  • the two beams are transmitted on two time domain resources using the same frequency domain resource.
  • Figure 10c illustrates a case where two beams are used in a round-robin cycle.
  • K SCIs are reported using beam 1
  • K are reported using beam 2.
  • the CSI uses the beam 1 to report K SCI.... on the third group of time domain resources until the time domain resource configured by the system or the number of times of reporting reaches the preset value is used, or other conditions for stopping reporting are set by the system.
  • time domain resources and the frequency domain resources shown in FIG. 10a to FIG. 10c may be divided into units according to the design and requirements of the system.
  • the time domain may include at least one symbol, may also include at least one slot, may also include at least one time unit smaller than the symbol, may include at least one subcarrier in the frequency domain, and the like.
  • the specific transmission manners of the L beams are used, for example, whether they are sent simultaneously or in a round-robin manner, and may be determined by a predefined or default manner, or may be dynamically performed by using signaling (such as RRC signaling). Or semi-static instructions. For example, if the system defaults multiple beam transmission modes to be cyclically transmitted, when the user equipment receives the indication information of multiple beams, the K-CSI can be reported by using multiple beams in the above-mentioned round-robin manner.
  • the K CSIs may use joint coding when reporting. For example, taking two CSIs as an example, RI joint coding in two CSIs, CQI joint coding, and PMI joint coding (where the first PMI of the PMI in the first CSI and the PMI of the second CSI are the first) PMI joint coding, the second PMI of the PMI in the first CSI and the second PMI of the PMI in the second CSI, or the first PMI second PMI joint coding of the PMI in the first CSI, The first PMI and the second PMI of the PMI in the two CSIs are jointly encoded).
  • the RI in the first CSI, the first PMI of the PMI in the first CSI, the RI in the second CSI, the first PMI joint coding of the PMI in the first CSI, and the two CSIs CQI joint coding, a second PMI of the PMI in the first CSI and a second PMI joint coding of the PMI in the second CSI can be designed according to the requirements of the system, and this application does not limit this.
  • the embodiment of the present application provides an apparatus for implementing the functions of the network device in the foregoing embodiment.
  • the device may be a network device, or other device that can implement a corresponding function, such as a chip.
  • FIG. 11 is a schematic structural diagram of a network device according to an embodiment of the present invention.
  • the network device shown in Figures 11a and 11b may be a network device (e.g., a serving network device or a cooperative network device) in the embodiment shown in Figures 7 to 10c.
  • the network device shown in FIG. 11a and FIG. 11b can be used to implement the content that the network device participates in in all the above embodiments.
  • the network device shown in FIG. 11a includes a processor 1110, a transceiver 1120, and a memory 1130.
  • the transceiver 1120 can be configured to support sending and receiving information between the network device and the UE in the foregoing embodiment.
  • the processor 1110 may determine specific content of the indication information to be transmitted and/or generate the indication information, and the transceiver 1120 may send the indication information to the UE.
  • the downlink data may be sent to the UE, and the CSI reported by the UE and/or the uplink data sent by the UE may be received.
  • the network device can also include a memory 1130 that can be used to store program code and data for the network device. It will be appreciated that Figure 11a only shows a simplified implementation of a network device.
  • the network device as shown in FIG. 11b includes a processing unit 1111 and a transceiver unit 1121.
  • the processing unit 1111 may be configured to determine specific content of the indication information to be sent and/or generate the indication information
  • the transceiver unit 1121 may be configured to use the indication information to the UE.
  • the downlink data may be sent to the UE, and the CSI reported by the UE UE and/or the uplink data sent by the UE may be received.
  • the embodiment of the present application provides a device, which is used to implement the functions of the user equipment in the foregoing embodiment.
  • the device may be a user equipment, or other devices that can implement corresponding functions, such as a chip.
  • FIG. 12a and FIG. 12b a schematic diagram of an embodiment of a UE provided by the present invention is shown.
  • the UE as shown in Figures 12a and 12b may be the UE in the embodiment shown in Figures 7 to 10c.
  • the UE shown in FIG. 12a and FIG. 12b can be used to implement the content that the UE participates in the implementation in the embodiment shown in FIG. 7 to FIG. 10c, including all the content in the foregoing embodiment that receives the indication information and/or reports the CSI.
  • the UE shown in FIG. 12a includes a transceiver 1210, and the processor 1220 may further include a memory 1230 and a modem processor 1240.
  • the transceiver 1210 processes (eg, analog transforms, filters, amplifies, upconverts, etc.) the output samples output by the modem processor 1240 and generates an uplink signal that is transmitted via the antenna to the antenna The network device described in the above embodiment.
  • the antenna receives the downlink signal transmitted by the network device in the above embodiment, and the transceiver 1210 processes (eg, filters, amplifies, downconverts, digitizes, etc.) the signal received from the antenna and provides input sampling to The modem processor 1240.
  • the transceiver 1210 can receive indication information sent by the network device.
  • encoder 12401 receives traffic data and signaling messages to be transmitted on the uplink and processes (e.g., formats, codes, and interleaves) the traffic data and signaling messages.
  • Modulator 12402 further processes (e.g., symbol maps and modulates) the encoded traffic data and signaling messages and provides output samples.
  • Demodulator 12404 processes (e.g., demodulates) the input samples and provides symbol estimates.
  • the decoder 12403 processes (e.g., deinterleaves and decodes) the symbol estimate and provides decoded data and signaling messages that are sent to the UE.
  • Encoder 12401, modulator 12402, demodulator 12404, and decoder 12403 may be implemented by an integrated modem processor 1240. These components are processed according to the radio access technology employed by the radio access network.
  • the processor 1220 performs control management on the action of the UE, and is used to perform processing performed by the UE in the foregoing embodiment. For example, the processor 1202 may determine and/or generate K CSIs acquired on the same carrier according to the indication information.
  • the processor 1202 may determine and/or generate specific content of the K CSIs according to the CSI reporting configuration information indicated in the indication information.
  • the processor 1202 is configured to support the UE to perform content of the UE in the embodiment of the present invention.
  • Memory 1230 is for storing program code and data for the UE.
  • an embodiment of the present invention provides an example of another UE, where the UE includes a transceiver unit 1211 and a processing unit 1221.
  • the transceiver unit 1211 may be configured to receive the network device to send the indication information, and may further receive the downlink data sent by the at least one network device, or report the K CSIs and/or send the uplink data to the at least one network device.
  • the processing unit 1221 may be configured to determine and/or generate K CSIs acquired on the same carrier according to the indication information.
  • information and signals can be represented using any technology techniques, such as data, instructions, commands, information, signals, bits. (bit), symbol and chip may pass voltage, current, electromagnetic wave, magnetic field or magnetic particles, light field or optical particles, or any combination of the above.
  • a general purpose processor may be a microprocessor.
  • the general purpose processor may be any conventional processor, controller, microcontroller, or state machine.
  • the processor may also be implemented by a combination of computing devices, such as a digital signal processor and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a digital signal processor core, or any other similar configuration. achieve.
  • the steps of the method or algorithm described in the embodiments of the present invention may be directly embedded in hardware, a software module executed by a processor, or a combination of the two.
  • the software modules can be stored in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium in the art.
  • the storage medium can be coupled to the processor such that the processor can read information from the storage medium and can write information to the storage medium.
  • the storage medium can also be integrated into the processor.
  • the processor and the storage medium may be disposed in an ASIC, and the ASIC may be disposed in the user terminal. Alternatively, the processor and the storage medium may also be disposed in different components in the user terminal.
  • the above-described functions described in the embodiments of the present invention may be implemented in hardware, software, firmware, or any combination of the three. If implemented in software, these functions may be stored on a computer readable medium or transmitted as one or more instructions or code to a computer readable medium.
  • Computer readable media includes computer storage media and communication media that facilitates the transfer of computer programs from one place to another.
  • the storage medium can be any available media that any general purpose or special computer can access.
  • Such computer-readable media can include, but is not limited to, RAM, ROM, EEPROM, CD-ROM or other optical disk storage, disk storage or other magnetic storage device, or any other device or data structure that can be used for carrying or storing Other media that can be read by a general purpose or special computer, or a general purpose or special processor.
  • any connection can be appropriately defined as a computer readable medium, for example, if the software is from a website site, server or other remote source through a coaxial cable, fiber optic computer, twisted pair, digital subscriber line (DSL) Or wirelessly transmitted in, for example, infrared, wireless, and microwave, is also included in the defined computer readable medium.
  • DSL digital subscriber line
  • the disks and discs include compact disks, laser disks, optical disks, DVDs, floppy disks, and Blu-ray disks. Disks typically replicate data magnetically, while disks typically optically replicate data with a laser. Combinations of the above may also be included in a computer readable medium.

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

Abstract

L'invention concerne un procédé de mesure d'informations d'état de canal, comportant les étapes suivantes: un équipement d'utilisateur reçoit des informations de configuration en vue d'une mesure d'informations d'état de canal en provenance d'un dispositif de réseau sans fil, les informations de configuration comportant des informations concernant une ressource servant à la mesure d'informations d'état de canal et des informations concernant un attribut de mesure indiquant la ressource, et l'attribut de mesure comportant une mesure de canal, ou X mesures d'interférence, ou une mesure de canal et X mesures d'interférence, X étant un entier supérieur ou égal à 1; et l'équipement d'utilisateur mesure des informations d'état de canal d'après les informations de configuration, et renvoie les informations d'état de canal. Le procédé vise à satisfaire différentes exigences pour la mesure d'informations d'état de canal dans certains scénarios multipoint coordonnés différents dans un réseau futur.
PCT/CN2018/071634 2017-01-06 2018-01-05 Procédé, appareil et système de traitement d'informations d'état de canal Ceased WO2018127149A1 (fr)

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US16/504,264 US11082986B2 (en) 2017-01-06 2019-07-06 Channel state information processing method and apparatus, and system

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CN201710314221 2017-05-05
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CN201710687469.0A CN108282212B (zh) 2017-01-06 2017-08-11 一种信道状态信息处理的方法、装置和系统

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CN112888012A (zh) * 2019-11-29 2021-06-01 维沃移动通信有限公司 测量目的确定方法、装置、设备及介质
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US11838080B2 (en) * 2020-06-12 2023-12-05 Qualcomm Incorporated Sidelink channel state information reporting for sidelink relaying that uses multiple transmit receive points
CN114080041A (zh) * 2020-08-19 2022-02-22 华为技术有限公司 一种信息传输方法和通信装置
CN115276890A (zh) * 2021-04-30 2022-11-01 维沃移动通信有限公司 传输处理方法、终端及网络侧设备
CN115314935A (zh) * 2021-05-06 2022-11-08 联发科技股份有限公司 报告信道状态信息csi的方法及装置
CN113747491A (zh) * 2021-08-26 2021-12-03 上海擎昆信息科技有限公司 干扰上报方法和用户设备
CN116963161A (zh) * 2022-04-12 2023-10-27 华为技术有限公司 一种信道状态的反馈方法及装置
CN115997353A (zh) * 2022-10-21 2023-04-21 北京小米移动软件有限公司 一种信道状态信息反馈方法、装置、设备及存储介质

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