Channel state information report determination method and device, terminal equipment and network equipment

Abstract

The invention discloses a channel state information report determination method and device, terminal equipment and network equipment, and relates to the technical field of communication. The method comprises the following steps: determining a first CSI report, wherein the first CSI report comprises channel related information of one or more beams; the channel related information of the one or more beams comprises at least one of the following items: channel information of the one or more beams, CSI information of the one or more beams, and airspace compression related information of the one or more beams; the airspace compression related information of the one or more beams represents related information of airspace compression of the channel information of the one or more beams. It can be seen that the channel related information of one or more beams can be reported, so that the network can perform more accurate / reasonable channel estimation / network configuration / network scheduling and the like according to the channel related information of one or more beams, and the network stability is improved.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a method and apparatus for determining a channel state information report, a terminal device, and a network device. Background Art

[0002] Currently, the standard protocol specified by the 3rd Generation Partnership Project (3GPP) organization has introduced channel state information (CSI) and conducted relevant research.

[0003] In related research, the network may configure CSI-related configurations so that the terminal device may perform CSI feedback (feedback) / CSI reporting (reporting), etc. according to the CSI-related configurations.

[0004] However, there are various network scenarios, and different network scenarios may have different network configurations, network requirements or network implementations, which may cause the information included / carried / borne by the CSI report to change due to different network scenarios. Therefore, further research is needed on the information included in the CSI report. Summary of the invention

[0005] The present application provides a channel state information report determination method and apparatus, terminal equipment and network equipment, in order to report channel-related information of one or more beams, determine CSI reports, and improve network stability.

[0006] In a first aspect, a channel state information report determination method of the present application includes:

[0007] Determine a first channel state information (CSI) report, where the first CSI report includes channel related information of one or more beams;

[0008] The channel-related information of the one or more beams includes at least one of the following: channel information of the one or more beams, CSI information of the one or more beams, and spatial compression-related information of the one or more beams;

[0009] The spatial domain compression related information of the one or more beams represents the related information of spatial domain compression of the channel information of the one or more beams.

[0010] It can be seen that compared to the current network scenario in which the network can only perform corresponding channel estimation / network configuration / network scheduling based on the channel-related information of a single beam, in the network scenario of the present application, since the present application can report the channel-related information of multiple beams, the network can perform more accurate / reasonable channel estimation / network configuration / network scheduling based on the channel-related information of multiple beams. In this way, better communication quality can be guaranteed due to more accurate / reasonable channel estimation / network configuration / network scheduling, which is conducive to improving network stability.

[0011] In addition, compared to the current network scenario that only involves reporting of channel-related information of a single or multiple beams under NCJT, CJT or multiple TRPs, the present application can report channel-related information of one or more beams that are not NCJT, not CJT or under a single TRP, so as to improve network diversity.

[0012] At the same time, the present application may choose not to directly report the channel information of one or more beams, but to first perform spatial domain compression on the channel information of one or more beams, and then further process the information after spatial domain compression on the channel information of the one or more beams, and finally report it, so as to reduce resource occupancy and signaling overhead, etc.

[0013] In a second aspect, a channel state information report determination device of the present application includes:

[0014] A determining unit, configured to determine a first channel state information CSI report, where the first CSI report includes channel related information of one or more beams;

[0015] The channel-related information of the one or more beams includes at least one of the following: channel information of the one or more beams, CSI information of the one or more beams, and spatial compression-related information of the one or more beams;

[0016] The spatial domain compression related information of the one or more beams represents the related information of spatial domain compression of the channel information of the one or more beams.

[0017] In a third aspect, the steps in the method designed in the first aspect are applied to a terminal device or in a terminal device.

[0018] In a fourth aspect, the steps in the method designed in the first aspect are applied to a network device or in a network device.

[0019] The fifth aspect is a terminal device of the present application, comprising a processor, a memory, and a computer program or instructions stored on the memory, wherein the processor executes the computer program or instructions to implement the steps in the method designed in the first aspect above.

[0020] The sixth aspect is a network device of the present application, comprising a processor, a memory, and a computer program or instructions stored on the memory, wherein the processor executes the computer program or instructions to implement the steps in the method designed in the first aspect above.

[0021] The seventh aspect is a chip of the present application, comprising a processor and a communication interface, wherein the processor executes the steps in the method designed in the first aspect above.

[0022] The eighth aspect is a chip module of the present application, including a transceiver component and a chip, wherein the chip includes a processor, wherein the processor executes the steps in the method designed in the above-mentioned first aspect.

[0023] The ninth aspect is a computer-readable storage medium of the present application, wherein the computer program or instruction is stored therein, and when the computer program or instruction is executed, the steps in the method designed in the first aspect are implemented. For example, the computer program or instruction is executed by a processor.

[0024] The tenth aspect is a computer program product of the present application, comprising a computer program or an instruction, wherein when the computer program or the instruction is executed, the steps in the method designed in the first aspect are executed. For example, the computer program or the instruction is executed by a processor.

[0025] The beneficial effects brought about by the technical solutions of the second to tenth aspects can be referred to the technical effects brought about by the technical solution of the first aspect, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the architecture of a communication system according to an embodiment of the present application;

[0027] Figure 2 It is a flow chart of a method for determining a channel state information report according to an embodiment of the present application;

[0028] Figure 3 It is a block diagram of the functional units of a channel state information report determination device according to an embodiment of the present application;

[0029] Figure 4 is a schematic diagram of the structure of a terminal device according to an embodiment of the present application;

[0030] Figure 5 It is a structural diagram of a network device according to an embodiment of the present application. DETAILED DESCRIPTION

[0031] It should be understood that the terms "first", "second", etc. involved in the embodiments of the present application are used to distinguish different objects rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, software, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may also include steps or units that are not listed, or may also include other steps or units inherent to these processes, methods, products, or devices.

[0032] The "embodiment" involved in the embodiments of the present application means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0033] In the embodiments of the present application, "and / or" describes the association relationship of the associated objects, indicating that three relationships may exist. For example, A and / or B can represent the following three situations: A exists alone; A and B exist at the same time; B exists alone. Among them, A and B can be singular or plural.

[0034] In the embodiment of the present application, the symbol “ / ” can indicate that the previously associated objects are in an “or” relationship.

[0035] In the embodiments of the present application, "at least one item" or similar expressions refer to any combination of these items, including any combination of single items or plural items, and refer to one or more, and multiple refers to two or more. For example, at least one item of a, b, or c can represent the following seven situations: a, b, c, a and b, a and c, b and c, a, b, and c. Among them, each of a, b, and c can be an element or a set containing one or more elements.

[0036] In the embodiments of the present application, "equal to" can be used in conjunction with greater than, and is applicable to the technical solution adopted when greater than, and can also be used in conjunction with less than, and is applicable to the technical solution adopted when less than. When equal to is used in conjunction with greater than, it is not used in conjunction with less than; when equal to is used in conjunction with less than, it is not used in conjunction with greater than.

[0037] In the embodiments of the present application, the terms “of”, “corresponding / relevant”, “corresponding”, and “indicated” may sometimes be used interchangeably.

[0038] The words “associated with,” “corresponding to,” “corresponding to,” “is,” “of,” “for,” “belonging to,” “as,” and “regarded as” involved in the embodiments of the present application can sometimes be used interchangeably.

[0039] The words “expect,” “look forward to,” and “hope” etc. involved in the embodiments of the present application may sometimes be used interchangeably.

[0040] The "connection" in the embodiments of the present application refers to various connection methods such as direct connection or indirect connection to achieve communication between devices, and there is no limitation on this.

[0041] The “network” in the embodiments of the present application can be expressed as the same concept as the “system”, and the communication system is the communication network.

[0042] The following describes the relevant contents, concepts, meanings, technical issues, technical solutions and beneficial effects involved in the embodiments of the present application.

[0043] 1. Communication systems, terminal equipment and network equipment

[0044] 1. Communication system

[0045] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced Long Term Evolution (LTE-A) system, New Radio (NR) system, NR system evolution system, LTE-based Access to Unlicensed Spectrum (LTE-U) system on unlicensed spectrum, NR-based Access to Unlicensed Spectrum (NR-U) system on unlicensed spectrum, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (Wi-Fi), 6th Generation (6G) communication system or other communication systems.

[0046] It should be noted that the number of connections supported by traditional communication systems is limited and easy to implement. However, with the development of communication technology, communication systems can not only support traditional communication systems, but also support device-to-device (D2D) communication, machine-to-machine (M2M) communication, machine type communication (MTC), vehicle-to-vehicle (V2V) communication, vehicle-to-everything (V2X) communication, narrowband Internet of things (NB-IoT) communication, etc. Therefore, the technical solutions of the embodiments of the present application can also be applied to the above communication systems.

[0047] In addition, the technical solutions of the embodiments of the present application can be applied to beamforming (beamforming), carrier aggregation (CA), dual connectivity (DC) or standalone (SA) deployment scenarios, etc.

[0048] In the embodiment of the present application, the spectrum used for communication between the terminal device and the network device can be a licensed frequency band or an unlicensed frequency band, and there is no limitation on this. In addition, the unlicensed frequency band can be understood as a shared frequency band, and the licensed spectrum can be understood as a non-shared frequency band.

[0049] Since the embodiments of the present application describe various embodiments in conjunction with terminal devices and network devices, the terminal devices and network devices involved will be described in detail below.

[0050] 2. Terminal equipment

[0051] Terminal equipment can be a device with transceiver functions, and can also be called terminal, user equipment (UE), remote terminal equipment (remote UE), relay equipment (relay UE), access terminal equipment, user unit, user station, mobile station, mobile station, remote station, mobile device, user terminal equipment, intelligent terminal equipment, wireless communication equipment, user agent or user device. It should be noted that relay equipment is a terminal equipment that can provide relay forwarding services for other terminal equipment (including remote terminal equipment).

[0052] For example, the terminal device may be a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in unmanned autonomous driving, a wireless terminal device in remote medical, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, or a wireless terminal device in a smart home, etc.

[0053] For another example, the terminal device may also be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a next-generation communication system (such as an NR communication system, a 6G communication system), or a terminal device in a future evolved public land mobile communication network (PLMN), etc., without specific limitation.

[0054] Optionally, the terminal device can be deployed on land, including indoors or outdoors, handheld, wearable or vehicle-mounted; it can be deployed on the water (such as ships); it can be deployed in the air (such as airplanes, balloons and satellites).

[0055] Optionally, the terminal device may include a device with wireless communication function, such as a chip system, a chip, or a chip module. For example, the chip system may include a chip and may also include other discrete devices.

[0056] Optionally, the terminal device of the embodiment of the present application can be a chip, a chip module, a device, a unit, etc., and there is no specific limitation on this.

[0057] 3. Network equipment

[0058] A network device may be a device with transceiver functions and may be used to communicate with a terminal device.

[0059] Optionally, the network device may be responsible for radio resource management (RRM), quality of service (QoS) management, data compression and encryption, data transmission and reception, etc. on the air interface side.

[0060] Optionally, the network device may include a base station (BS) in a communication system or a device deployed in a radio access network (RAN) for providing wireless communication functions, that is, the network device may include a device in the RAN.

[0061] For example, the devices in the RAN may include an evolved node B (evolutional node B, eNB or eNodeB) in an LTE communication system, a next generation evolved node B (next generation evolved node B, ng-eNB) in an NR communication system, a next generation node B (next generation node B, gNB) in an NR communication system, a master node (MN) in a dual-connection architecture, a second node or secondary node (SN) in a dual-connection architecture, etc., without specific limitation.

[0062] Optionally, the network device may include a device in a core network (CN).

[0063] For example, the equipment in the CN may include an access and mobility management function (AMF), a user plane function (UPF), a session management function (SMF), etc.

[0064] Optionally, the network device may also be an access point (AP) in a WLAN, a relay station, a communication device in a future evolved PLMN network, a communication device in an NTN network, and the like.

[0065] Optionally, the network device may include a device having a wireless communication function for the terminal device, such as a chip system, a chip, or a chip module. For example, the chip system may include a chip, or may include other discrete devices.

[0066] Optionally, the network device may be a transmission and reception point (TRP).

[0067] Optionally, the network device can communicate with an Internet Protocol (IP) network, such as the Internet, a private IP network, or other data networks.

[0068] Optionally, the network device may include an independent node to implement the functions of the above-mentioned base station, or may include two or more independent nodes to implement the functions of the above-mentioned base station. For example, the network device includes a centralized unit (CU) and a distributed unit (DU), such as gNB-CU and gNB-DU. Further, in other embodiments of the present application, the network device may also include an active antenna unit (AAU). Among them, the CU implements part of the functions of the network device, and the DU implements another part of the functions of the network device. For example, the CU is responsible for processing non-real-time protocols and services, and implements the functions of the radio resource control (RRC) layer, the service data adaptation protocol (SDAP) layer, and the packet data convergence protocol (PDCP) layer. The DU is responsible for processing physical layer protocols and real-time services, and implements the functions of the radio link control (RLC) layer, the medium access control (MAC) layer, and the physical (PHY) layer. In addition, the AAU can implement some physical layer processing functions, radio frequency processing, and related functions of active antennas. Since the information of the RRC layer will eventually become the information of the PHY layer, or be converted from the information of the PHY layer, under this network deployment, high-level signaling (such as RRC signaling) can be considered to be generated by the CU, sent by the DU, or sent by the DU and the AAU. It can be understood that the network device may include at least one of the CU, DU, and AAU. In addition, the CU can be divided into a RAN device, or the CU can be divided into a core network device, without specific limitation.

[0069] Optionally, the network device may be any site in the multiple sites that perform coherent joint transmission (CJT) with the terminal device, or other sites outside the multiple sites, or other network devices that perform network communication with the terminal device, and there is no specific limitation on this. Among them, multi-site coherent joint transmission may be multiple sites coherent transmission, or different data belonging to the same physical downlink shared channel (PDSCH) are sent from different sites to the terminal device, or multiple sites are virtualized into one site for transmission, or other forms of collaborative transmission, or names with the same meaning specified in other standards are also applicable to the present application, that is, the present application does not limit the names of these parameters. The sites in the multi-site coherent joint transmission may be a remote radio head (RRH), a TRP, etc., and there is no specific limitation on this.

[0070] Optionally, the network device may be any site in the multi-site that performs incoherent joint transmission with the terminal device, or other sites outside the multi-site, or other network devices that perform network communication with the terminal device, and there is no specific limitation on this. Among them, multi-site incoherent joint transmission may be multiple sites joint incoherent transmission, or different data belonging to the same PDSCH is sent from different sites to the terminal device, or other forms of non-cooperative transmission, or names with the same meaning specified in other standards are also applicable to the present application, that is, the present application does not limit the names of these parameters. The sites in the multi-site incoherent joint transmission may be RRH, TRP, etc., and there is no specific limitation on this. The transmission scheme of multiple TRPs may include an S-DCI based M-TRP transmission scheme, and may also include an M-DCI based M-TRP transmission scheme.

[0071] It should be noted that the TRP of the present application is not limited to coherent joint transmission or incoherent joint transmission scenarios, but can also be applied to other scenarios without specific restrictions.

[0072] Optionally, the network device may have a mobile feature, for example, the network device may be a mobile device. Optionally, the network device may be a satellite or a balloon station. For example, the satellite may be a low earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geostationary earthorbit (GEO) satellite, a high elliptical orbit (HEO) satellite, etc. Optionally, the network device may also be a base station set up in a location such as land or water.

[0073] Optionally, the network device can provide services for the cell, and the terminal device in the cell can communicate with the network device through transmission resources (such as spectrum resources). The cell can be a macro cell, a small cell, a metro cell, a micro cell, a pico cell, a femto cell, etc.

[0074] Optionally, the network device of the embodiment of the present application may be a chip, a chip module, a device, a unit, etc., and there is no specific limitation on this.

[0075] 4. Example

[0076] The following is an exemplary description of the communication system in an embodiment of the present application.

[0077] For example, a network architecture of a communication system in an embodiment of the present application can be found at Figure 1 .like Figure 1 As shown, the communication system 10 may include a network device 110 and a terminal device 120. The terminal device 120 may communicate with the network device 110 in a wireless manner.

[0078] Figure 1 This is merely an example of a network architecture of a communication system and does not constitute a limitation on the network architecture of the communication system in the embodiment of the present application.

[0079] For example, the communication system 10 may also include a server or other devices.

[0080] For another example, the communication system 10 may include other network devices in addition to the network device 110 .

[0081] For another example, the communication system 10 may include other terminal devices in addition to the terminal device 120 .

[0082] 2. A CSI Report Determination Method

[0083] 1. Network scenarios studied in this application

[0084] The standard protocols developed by 3GPP have conducted relevant research on CSI.

[0085] CSI can be the channel state information used by the terminal device to feed back the downlink channel quality to the network device. That is, the terminal device can feed back the downlink channel quality to the network device based on CSI, so that the network device can select a suitable modulation and coding scheme (MCS) for the transmission of downlink data, reduce the block error rate (BLER) of downlink data transmission, and perform corresponding beam management, mobility management, adaptation tracking, rate matching and other processing.

[0086] Currently, there are various network scenarios, and different network scenarios may have different network configurations, network requirements or network implementations, which may cause the information included / carried / borne by the CSI report to change due to different network scenarios.

[0087] This application introduces the following network scenarios:

[0088]

Network Scenario 1

[0089] In current network scenarios, the network (such as network equipment) usually configures the CSI-related configuration corresponding to a single beam to the terminal device, and the terminal device can determine the channel-related information of the single beam according to the CSI-related configuration corresponding to the single beam, and then feedback / report the channel-related information of the single beam, thereby realizing CSI feedback / CSI reporting of the single beam. In this way, the network can perform corresponding channel estimation / network configuration / network scheduling, etc. according to the channel-related information of the single beam.

[0090] It should be noted that in the present application, the network configures the CSI-related configuration corresponding to a single beam to the terminal device, which can be understood as the network configures one or more beams to the terminal device, but expects the terminal device to report the CSI corresponding to a beam; it can also be understood that the network configures one or more beams to the terminal device, but the CSI-related configuration only includes the CSI-related configuration corresponding to one beam.

[0091] Different from the current network scenario, this application introduces "network scenario 1", which is as follows:

[0092] In "Network Scenario 1", the network (such as a network device) configures CSI-related configurations corresponding to multiple beams to the terminal device, and the terminal device can determine the channel-related information of the multiple beams according to the CSI-related configurations corresponding to the multiple beams for feedback / reporting, thereby realizing CSI feedback / CSI reporting of multiple beams. At this time, the CSI report may include channel-related information of multiple beams. Among them, the channel-related information of the multiple beams may be indicated / expected / anticipated / hoped by the network to be reported to it, or may be reported by the terminal device as recommended to the network.

[0093] It should be noted that in the present application, the network configures CSI-related configurations corresponding to multiple beams to the terminal device, which can be understood as the network configures multiple beams to the terminal device and expects the terminal to report the CSI corresponding to the multiple beams; it can also be understood as the network configures multiple beams to the terminal device, and the CSI-related configuration includes the corresponding CSI-related configurations of the multiple beams.

[0094] At the same time, since the channel information may have a high amount of data / information, it will take up more resources to transmit, and will also increase signaling overhead, etc. Therefore, in order to reduce resource occupancy and signaling overhead, etc., this application may not directly feedback the channel information of multiple beams, but first perform spatial compression processing on the channel information of multiple beams to obtain spatial compression related information of multiple beams, and then further process the information of the channel information of multiple beams after spatial compression processing, and finally report it. For the sake of ease of description, this process can be referred to as "spatial compression reporting of CSI for multiple beams".

[0095] In addition, in "Network Scenario 1", the network (such as network equipment) may configure CSI-related configurations corresponding to multiple beams under non-coherent joint transmission (NCJT) or CJT to the terminal device, and the terminal device can report channel-related information of multiple beams according to these CSI-related configurations to achieve CSI compression reporting of multiple beams under NCJT or CJT. In other words, "Network Scenario 1" may involve the CSI mechanism of multiple beams under NCJT or CJT.

[0096]

Network Scenario 2

[0097] In the current network scenario, the network (such as network equipment) usually configures the CSI-related configuration corresponding to a single or multiple beams under NCJT or CJT to the terminal device, and the terminal device can perform CSI feedback / CSI reporting of a single or multiple beams under NCJT or CJT according to the CSI-related configuration, but does not involve CSI compression reporting of multiple beams (different from "Network Scenario 1"). In this way, the network can perform relevant channel estimation / network configuration / network scheduling under NCJT or CJT based on the channel-related information of a single or multiple beams.

[0098] Different from the current network scenario, this application introduces "Network Scenario 2", which is as follows:

[0099] In "Network Scenario 2", the network configures the CSI-related configurations corresponding to one or more beams that are not under NCJT or CJT to the terminal device, and the terminal device can report the channel-related information of one or more beams based on these CSI-related configurations, thereby realizing CSI feedback / CSI reporting of one or more beams that are not under NCJT or CJT. At this time, the CSI report may include channel-related information of one or more beams. The channel-related information of the one or more beams may be indicated / expected / anticipated / hoped by the network to be reported to it, or may be reported by the terminal device as recommended to the network.

[0100] In addition, in order to reduce resource occupancy and signaling overhead, etc., the present application may not directly feedback the channel information of one or more beams that are not under NCJT or CJT, but first perform spatial compression on the channel information of the one or more beams, and then report the information after spatial compression or process the information after spatial compression before reporting. For ease of description, this process can be referred to as "spatial compression reporting of CSI for one or more beams that are not under NCJT or CJT".

[0101]

Network Scenario 3

[0102] In the current network scenario, the network (such as network equipment) usually configures the CSI-related configuration corresponding to multiple beams under multiple TRPs to the terminal device, and the terminal device can perform CSI feedback / CSI reporting of a single or multiple beams under multiple TRPs according to the CSI-related configuration, but does not involve CSI compression reporting of multiple beams (different from "network scenario 1"). In this way, the network can perform related channel estimation / network configuration / network scheduling under multiple TRPs based on the channel-related information of a single or multiple beams. At the same time, in the current network scenario, one beam corresponds to one TRP / CRI, etc. In this way, multiple beams correspond to multiple TRPs / CRIs, etc.

[0103] Different from the current network scenario, this application introduces "network scenario 3", which is as follows:

[0104] In "Network Scenario 3", the network configures the CSI-related configurations corresponding to one or more beams under a single TRP to the terminal device, and the terminal device can report the channel-related information of one or more beams according to these CSI-related configurations, thereby realizing CSI feedback / CSI reporting of one or more beams under a single TRP. At this time, the CSI report may include channel-related information of one or more beams. Among them, the channel-related information of the one or more beams may be the network's indication / expectation / expectation / hope that the terminal device can report to it, or it may be the terminal device's recommendation to the network. At the same time, in "Network Scenario 3", the multiple beams of the present application may correspond to one or more TRP / CRI, etc.

[0105] In addition, in order to reduce resource occupancy and signaling overhead, etc., the present application may choose not to directly feedback the channel information of one or more beams under a single TRP, but to first perform spatial compression on the channel information of the one or more beams, and then report the information after spatial compression or process the information after spatial compression before reporting. For ease of description, this process can be referred to as "spatial compression processing and reporting of CSI for one or more beams under a single TRP".

[0106] It can be seen that compared to the current network scenario in which the network can only perform corresponding channel estimation / network configuration / network scheduling based on the channel-related information of a single beam, in the network scenario of the present application, since the present application can report the channel-related information of multiple beams, the network can perform more accurate / reasonable channel estimation / network configuration / network scheduling based on the channel-related information of multiple beams. In this way, better communication quality can be guaranteed due to more accurate / reasonable channel estimation / network configuration / network scheduling, which is conducive to improving network stability.

[0107] In addition, compared to the current network scenario that only involves reporting of channel-related information of a single or multiple beams under NCJT, CJT or multiple TRPs, the present application can report channel-related information of one or more beams that are not NCJT, not CJT or under a single TRP, so as to improve network diversity.

[0108] At the same time, the present application may choose not to directly report the channel information of one or more beams, but to first perform spatial compression on the channel information of one or more beams, and then report the information after spatial compression, or process the information after spatial compression before reporting, so as to reduce resource occupancy and signaling overhead, etc.

[0109] In combination with the above content, the following embodiments of the present application will specifically introduce the type of information contained in the CSI report, the CSI report on the PUSCH, the priority of the CSI report, the CSI processing unit (CSI processing unit, CPU) occupied by the CSI report, the CSI processing time requirement (CSI computation time requirement) of the CPU report, and other related content in the case of CSI feedback / CSI reporting of multiple beams.

[0110] 2. Specific instructions

[0111] It should be noted that the contents in the following sections may be combined and related to each other, may be parallel to each other, or may be independent of each other, and there is no specific limitation on this.

[0112] 1) First CSI report, second CSI report, one or more beams

[0113]

First CSI Report and Second CSI Report

[0114] Since the network scenario of the present application is significantly different from the current network scenario, when reporting CSI, the information included in the CSI report under the network scenario of the present application and the information included in the CSI report under the current network scenario may be significantly different. Therefore, for the convenience of description and distinction, the CSI report under the network scenario of the present application is referred to as the "first CSI report", and the CSI report under the current network scenario is referred to as the "second CSI report".

[0115]

Beam

[0116] It should be noted that the "beam" in the present application can be regarded as a channel state information reference signal (CSI-RS), a synchronization signal block (SS / PBCH block, SSB), a CSI reference signal resource indicator index (CSI-RS Resource Indicator, CRI), a synchronization signal block resource indicator index (SS / PBCH block resource indicator, SSBRI), a demodulation reference signal (DMRS), a CSI-RS port, an antenna port, etc.; in other words, a "beam" can correspond to / associated with CSI-RS, SSB, CRI, SSBRI, DMRS, CSI-RS port, antenna port, etc., and can correspond to / associated with a combination of at least two of CSI-RS, SSB, CRI, SSBRI, DMRS, CSI-RS port, and antenna port (such as a combination of CSI-RS and SSB), and there is no specific restriction on this.

[0117] Optionally, the "beam" in this application can be understood as a channel / signal / reference signal configured by the network, such as CSI-RS, SSB, DMRS, CSI-RS port, etc.; it can also be understood as a channel / signal / reference signal configured by the network for terminal measurement; it can also be understood as a channel / signal / reference signal used for channel measurement in the CSI resource configuration associated with the CSI report configuration configured by the network. Of course, the application is not limited to the above examples for "how the beam is understood", and there can be other examples, and no specific limitation is made to this.

[0118] Optionally, the "beam" of the present application may be characterized by a channel / signal / reference signal (such as CSI-RS, SSB, DMRS, CSI-RS port, etc.), and / or by an index (such as a beam index), and / or by spatial angle information, etc. Of course, the present application is not limited to the above examples for "how the beam is specifically characterized", and there may be other examples, which are not specifically limited.

[0119] One or more beams

[0120] It should be noted that the network will configure multiple beams for the terminal device, as well as the CSI-related configurations corresponding to the multiple beams. Then, the terminal device will determine one or more beams from the multiple beams according to the network instructions or autonomously, and then perform CSI reporting / CSI compression reporting according to the CSI-related configurations corresponding to the one or more beams.

[0121] Optionally, the number of beams or the beam index of the one or more beams may be indicated / configured by the network.

[0122] In this way, the network instructs / expects the terminal device to report channel-related information of one or more beams to it, so that the network can perform more accurate / reasonable channel estimation / network configuration / network scheduling, etc. based on the channel-related information of these beams.

[0123] For example, the network configures 8 beams with indices 0 to 7 to the terminal device, namely beam 0 to beam 7. Then, the network instructs / expects the terminal device to report CSI / compressed CSI for channel-related information of 4 beams with indices 0-3.

[0124] For another example, the network configures 8 beams with indexes 0 to 7 to the terminal device, namely, beams 0 to 7. Then, the terminal device autonomously decides to recommend to the network to perform CSI reporting / CSI compression reporting on the channel related information of the beam with index 3.

[0125] For another example, the network configures 8 beams with indexes 0 to 7 to the terminal device, namely, beam 0 to beam 7. Then, the network instructs / expects the terminal device to perform CSI feedback / CSI compression reporting on channel-related information of 2 beams.

[0126] It should be noted that the "beam" here can also be represented by channel / signal / reference signal / index / spatial angle information, etc., and there is no specific limitation on this.

[0127] Optionally, the beam number or beam index of the one or more beams may be indicated by the first CSI report.

[0128] This is because, when the terminal device recommends to the network, since the network does not know which beams or which beam the terminal device will recommend from multiple beams, the terminal device needs to indicate the number or index of the recommended beams through the CSI report. In this way, the network can participate in the decision-making of channel estimation / network configuration / network scheduling, etc. based on the channel-related information of these beams recommended by the terminal device. Of course, the network may not adopt the channel-related information of these beams recommended by the terminal device.

[0129] For example, the network configures 8 beams with indexes 0 to 7 to the terminal device, namely, beams 0 to beam 7. Then, the terminal device autonomously decides to recommend to the network CSI reporting / CSI compression reporting of channel-related information of 4 beams with indexes 0-3, or the terminal device autonomously decides to recommend to the network CSI reporting / CSI compression reporting of channel-related information of beam with index 3.

[0130] It should be noted that the "beam" here can also be represented by channel / signal / reference signal / index / spatial angle information, etc., and there is no specific limitation on this.

[0131] In addition, the "one or more beams" in the present application can be regarded as one or more CSI-RS, one or more SSB, one or more CRI, one or more SSBRI, one or more DMRS, one or more CSI-RS ports, one or more antenna ports, etc., or CSI-RS / SSB / CRI / SSBRI / DMRS / CSI-RS port / antenna port corresponding to one or more beams, or a combination of at least two of the CSI-RS, SSB, CRI, SSBRI, DMRS, CSI-RS port, and antenna ports corresponding to one or more beams (such as a combination of CSI-RS and SSB), etc.

[0132] 2) CSI in the network scenario of this application

[0133]

CSI Configuration

[0134] In the network scenario of the present application, CSI-related configurations may be defined by a high-level parameter CSI-MeasConfig (CSI measurement configuration), wherein CSI-MeasConfig may indicate (include / configure / carry) the following two high-level parameters: CSI-ResourceConfig (CSI resource configuration) and CSI-ReportConfig (CSI report configuration).

[0135] In addition, since CSI-ReportConfig may indicate (include) CSI-ResourceConfigId (CSI resource configuration identifier), CSI-ResourceConfig may be associated with (correspond to / mapped to) CSI-ReportConfig through CSI-ResourceConfigId.

[0136] CSI-ReportConfig can be used to configure CSI reporting, that is, to configure CSI reporting.

[0137] CSI-ResourceConfig can be used to configure CSI measurement resources, such as CSI-RS. In addition, CSI-ResourceConfig can configure CSI Resource Set (CSI resource set), and CSI Resource Set can include the most basic CSI-RS resources (such as CSI-RS-Resource).

[0138] CSI Resource Set may indicate (include) at least one of the following: NZP-CSI-RS-ResourceSet (NZP (Non-Zero-Power)-CSI-RS resource set), CSI-IM-ResourceSet (CSI-IM (CSI Interference Measurement) resource set), and CSI-SSB-ResourceSet (synchronization signal block SSB resource set).

[0139] NZP-CSI-RS-ResourceSet can be used for channel measurement and / or interference measurement; CSI-IM-ResourceSet can be used for interference measurement; CSI-SSB-ResourceSet can be used for channel measurement.

[0140] The type of CSI-RS resources can be periodic, semi-persistent or aperiodic.

[0141] The report configuration type (reportConfigType) in CSI-ReportConfig may be used to indicate the type of CSI report, wherein the CSI report may be transmitted via a physical uplink control channel (physical uplink control channel, PUCCH) or a physical uplink shared channel (physical uplink shared channel, PUSCH).

[0142] CSI-ResourceConfig and / or NZP-CSI-RS-ResourceSet can configure one or more NZP CSI-RS resource set configurations. Each NZP CSI-RS resource set can be composed of K (K ≥ 1) NZP CSI-RS resources, that is, each NZP CSI-RS resource set can include at least one NZP CSI-RS resource.

[0143] Optionally, CSI measurement can be understood as measuring the downlink channel through the CSI-RS resources or SSB configured by CSI-ResourceConfig.

[0144] Optionally, CSI-related configuration may be understood as CSI report configuration and / or CSI resource configuration.

[0145] Types of CSI reports

[0146] In the network scenario of the present application, the types of CSI reports may include: periodic CSI reports, aperiodic CSI reports, semi-persistent CSI reports carried on PUCCH, and semi-persistent CSI reports carried on PUSCH.

[0147] It should be noted that since PUCCH needs to be used to report periodic CSI, the periodic CSI report can be carried by PUCCH. Since PUSCH needs to be used to report aperiodic CSI, the aperiodic CSI report can be carried by PUSCH.

[0148] For non-periodic CSI reporting and semi-persistent CSI reporting carried on PUSCH, the network device will also configure high-level parameters TriggerState and reportTriggerSize to cooperate with the CSI request field (CSI request field) in DCI (downlink control information, DCI).

[0149] ◆Periodic CSI report

[0150] After configuring the periodic CSI-RS Resource and Report parameters through the RRC message (or RRC signaling), it will take effect immediately without activating / triggering CSI-RS transmission and CSI reporting through MAC-CE / DCI.

[0151] Semi-persistent CSI reporting on PUCCH

[0152] If semi-continuous CSI-RS transmission is configured through RRC messages, it is necessary to first activate CSI-RS transmission through MAC CE1 and then activate CSI reporting through MAC CE2; if periodic CSI-RS transmission is configured through RRC messages, it is not necessary to activate CSI-RS transmission through MACCE1, but only CSI reporting needs to be activated through MAC CE2.

[0153] Semi-persistent CSI reporting on PUSCH

[0154] If semi-continuous CSI-RS transmission is configured through RRC messages, it is necessary to activate CSI-RS transmission through MAC CE1 first, and then trigger CSI reporting through DCI; if periodic CSI-RS transmission is configured through RRC messages, it is not necessary to activate CSI-RS transmission through MAC CE1, and only CSI reporting needs to be triggered through DCI.

[0155] It should be noted that for DCI, the DCI can be a DCI format (format) 0_1 encrypted with SP-CSI-RNTI (semi-persistent CSIRNTI), and the CSI request field in the DCI can be associated with the corresponding trigger state (TriggerState) through the setting of the codepoint. The associated CSI-ReportConfig will be defined in the TriggerState, so that the CSI-ReportConfig associated with the PUSCH upper half-persistent CSI report can be found through the TriggerState.

[0156] ◆Non-periodic CSI report

[0157] For the scenario of aperiodic CSI-RS transmission and aperiodic CSI reporting, both aperiodic CSI-RS transmission and aperiodic CSI reporting are triggered by DCI, and the process is similar to the above-mentioned semi-persistent CSI reporting.

[0158] When the codepoint of the CSI request field in DCI format 0_1 / 0_2 is used to associate the corresponding TriggerState, different from the DCI trigger in the above semi-continuous CSI report, if the value of the CSI request field is 0, it means that no semi-periodic CSI report is required to be triggered; if the value of the CSI request field is 1, it means that the non-periodic CSI report associated with TriggerState 1 is triggered, and so on.

[0159] CSI reporting band

[0160] The report frequency configuration information (reportFreqConfiguration) in CSI-ReportConfig may be used to indicate the frequency granularity of the CSI report.

[0161] The CSI reporting setting configuration may define the CSI reporting band as a subset of subbands in a bandwidth part (BWP). That is, the active BWP may be divided into multiple subbands, and a subset (i.e., part of the subbands) of the multiple subbands may be defined as the CSI reporting band.

[0162] Among them, reportFreqConfiguration can indicate:

[0163] -csi-ReportingBand is a contiguous or non-contiguous subset of the subbands in the BWP for which CSI should be reported;

[0164] - Wideband CQI reporting or subband CQI reporting can be configured by higher layer parameters (such as CQI format indicator cqi-FormatIndicator). When wideband CQI reporting is configured, one wideband CQI is reported for each codeword in the entire CSI reporting band. When subband CQI reporting is configured, one CQI per codeword is reported for each subband in the CSI reporting band.

[0165] -Wideband PMI reporting or subband PMI reporting may be configured by a higher layer parameter (e.g., PMI format indication pmi-FormatIndicator). When wideband PMI reporting is configured, one wideband PMI is reported for the entire CSI reporting band. When subband PMI reporting is configured, a single wideband indication is reported for the entire CSI reporting band, except for 2 antenna ports, and one subband indication is reported for each subband in the CSI reporting band. When subband PMI is configured with 2 antenna ports, one PMI is reported for each subband in the CSI reporting band.

[0166] 3) Channel related information

[0167] It should be noted that the channel-related information of one or more beams may include at least one of the channel information of one or more beams, CSI information of one or more beams, spatial compression-related information of one or more beams, etc. This is described in detail below.

[0168] Of course, when reporting channel-related information of one or more beams, the channel information of one or more beams and the CSI information of one or more beams may not be reported at the same time, and there is no specific limitation on this.

[0169] Channel Model

[0170] In a Multiple Input Multiple Output (MIMO) system, for a transmitter with a antennas and a receiver with b antennas, the channel model of the MIMO channel can be expressed as:

[0171] r=Hs+n0;

[0172] Among them, r is the received signal vector after passing through the MIMO channel; s is the transmitted signal vector of the transmitter; H is the b×a order channel matrix for the MIMO channel; n0 is the additive noise vector.

[0173] In the precoding mode, the transmitter can optimize the spatial characteristics of the transmitted signal vector s in a precoding mode according to the channel matrix H, so that the spatial distribution characteristics of the transmitted signal vector s match the channel matrix H, thereby effectively reducing the dependence on the receiver algorithm and simplifying the receiver algorithm. Through precoding, the system performance can be effectively improved.

[0174] Precoding can be performed using linear or nonlinear methods. Due to complexity and other reasons, only linear precoding is generally considered in current wireless communication systems. After precoding, the channel model of the MIMO signal can be expressed as:

[0175] r=HWs+n0;

[0176] Wherein, W is the precoding matrix.

[0177] For a multi-user multiple-input multiple-output (MU-MIMO) system, the receiver cannot perform channel estimation for signals sent to other devices, so transmitter precoding can effectively suppress multi-user interference. It can be seen that it is beneficial for the system if the transmitter knows the channel matrix and uses appropriate precoding to process it.

[0178] In addition, in the precoding method, the precoding matrix W and the channel matrix H jointly determine the equivalent channel matrix (such as HW), and the equivalent channel matrix determines the channel characteristics / channel features, etc. In addition, in some cases, the precoding matrix W can be derived from the channel matrix H, for example, the precoding matrix W can be a matrix under a certain transformation of the channel matrix H.

[0179] Optionally, the terminal device performs channel measurement / assessment / detection / estimation through a downlink reference signal to obtain a channel matrix H. The downlink reference signal may include a CSI-RS, an SSB, or a DMRS, etc.

[0180] [Processing of channel matrix H]

[0181] The singular value decomposition (SVD) of the channel matrix H can be:

[0182] H=U∑V T ;

[0183] Among them, U=[u1,u2,…,u b ] is an orthogonal matrix or unitary matrix of order b×b, that is, it satisfies U TU = I;

[0184] V=[v1,v2,…,v a ] is an a×a-order orthogonal matrix or an eigenvalue matrix, that is, it satisfies V T V = I. The column vectors in V can be called right-singular vectors of the channel matrix H;

[0185] ∑ is a×a order diagonal matrix, the elements on the diagonal are p=min(b,a) singular values ​​σ1,σ2,...,σ p , arrange them in descending order, that is, σ1>σ2>...>σ p .

[0186] In addition, the present application can be used to conjugate the transpose of the channel matrix H T Perform matrix multiplication with the channel matrix H to obtain an a×a square matrix H T H. Through the square matrix H T H is subjected to eigendecomposition, and the eigenvalues ​​and eigenvectors obtained are as follows:

[0187] (H T H)v i =λ i v i ,i∈[1,a];

[0188] Among them, λ i Represents the square matrix H T The eigenvalue of H; v i Represents the square matrix H T The eigenvector of H.

[0189] From H=U∑V T It can be obtained that (H T H)=V∑ 2 V T .

[0190] Therefore, H T The eigenvectors of H also represent the column vectors in V above. That is, H T All eigenvectors of H can form the above V, and the square matrix H T The eigenvectors of H may be the right singular vectors of the channel matrix H.

[0191]

Channel Information

[0192] Channel information can be understood as relevant information obtained by performing channel measurement based on CSI-RS / DMRS / SSB, etc.

[0193] For example, the channel information may include at least one of the following: a channel matrix H, an equivalent channel matrix, a precoding matrix W (the precoding matrix W can be derived from the channel matrix H), a right singular vector V of the channel matrix H, a square matrix H T The eigenvector of H (the conjugate transpose of the channel matrix H T The eigenvector of the matrix obtained by multiplying the channel matrix H), at least one vector associated with the channel matrix H (such as at least one vector of the channel matrix H under a certain deformation, etc.), the square matrix H T At least one vector associated with H (such as a channel matrix H or a square matrix H T H under some deformation, etc.), time domain information of the channel, channel information in the delay-doppler domain, frequency domain characteristic information of the channel, time domain characteristic information of the channel, etc.

[0194] Of course, the channel information described in this application is not limited to the above-listed contents, and any relevant information obtained by performing channel measurement based on CSI-RS / DMRS / SSB, etc., can belong to channel information. In this way, the channel information of a beam can be the channel information obtained by performing channel measurement based on the CSI-RS / DMRS / SSB, etc. corresponding to the beam.

[0195] In addition, the channel information of the beam can be understood as the channel information corresponding to the beam, the channel information of the CSI-RS / SSB / CRI / SSBRI / DMRS / CSI-RS port / antenna port corresponding to the beam, the channel information corresponding to the CSI-RS / SSB / CRI / SSBRI / DMRS / CSI-RS port / antenna port, etc.

[0196] Optionally, the channel information of one or more beams may include the channel information of each of the one or more beams. In this way, the channel information of one or more beams is reported by including the channel information of one or more beams in the CSI report, so that the network obtains the channel information of one or more beams and performs related channel evaluation / network configuration / network scheduling, etc.

[0197] Optionally, the channel information of one or more beams may include the channel information of each beam in the one or more beams after joint processing. In this way, the channel information of one or more beams is reported by including the channel information of one or more beams in the CSI report, so that the network can obtain the channel information of one or more beams and perform relevant channel evaluation / network configuration / network scheduling, etc.

[0198]

CSI Information

[0199] The CSI information may be determined based on the channel information.

[0200] Optionally, the CSI information may include at least one of the following: layer 1 reference signal received power (layer1 reference signal received power, L1-RSRP), layer 1 signal-to-noise and interference ratio (layer1 signal-to-noise and interference ratio, L1-SINR), CSI-related parameters (CSI-related quantities), etc.

[0201] Optionally, the CSI-related parameters may include at least one of the following: CSI reference signal resource indicator index (CSI-RS Resource Indicator, CRI), synchronization signal block resource indicator index (SS / PBCH block resource indicator, SSBRI), rank indicator index (rank indicator, RI), precoding matrix indicator index (precoding matrix indicator, PMI), channel quality indicator index (channel quality indicator, CQI), layer indicator index (layer indicator, LI), capability index (CapabilityIndex), time-domain channel properties (time-domainchannel properties, TDCP), etc.

[0202] It should be noted that CRI can represent the CSI-RS resource recommended (or selected) by the terminal device, and SSBRI can represent the SSB resource recommended (or selected) by the terminal device. Among them, one CSI-RS resource can represent one beam or antenna direction, and one SSB resource can represent one beam or antenna direction.

[0203] RI can represent the number of layers recommended (or selected) by the terminal device, and the number of layers can determine which codebook. Each number of layers corresponds to a codebook, and a codebook consists of one or more codewords. For example, a codebook with 2 layers or a codebook with 1 layer.

[0204] PMI can represent the index of the codeword in the codebook recommended (or selected) by the terminal device, or quantized precoding information. One codeword corresponds to one precoding matrix. RI and PMI can represent the number of layers and precoding matrix recommended by the terminal device as a whole.

[0205] The CQI may indicate the quality of the channel of the current channel fed back by the terminal device to the network device. The terminal device needs to calculate the CQI.

[0206] In addition, the CSI information of the beam can be understood as the CSI information corresponding to the beam, the CSI information of the CSI-RS / SSB / CRI / SSBRI / DMRS / CSI-RS port / antenna port corresponding to the beam, the CSI information corresponding to the CSI-RS / SSB / CRI / SSBRI / DMRS / CSI-RS port / antenna port, etc.

[0207] Optionally, the CSI information of one or more beams may include the CSI information of each of the one or more beams. In this way, the CSI information of one or more beams is reported by including the CSI information of one or more beams in the first CSI report, so that the network obtains the CSI information of one or more beams and uses it to perform related channel assessment / network configuration / network scheduling, etc.

[0208]

Related information about airspace compression

[0209] It should be noted that since the channel information may have a higher amount of data / information, it will require more resources to transmit and will also increase signaling overhead, etc. Therefore, in order to reduce resource occupancy and signaling overhead, etc., the present application may introduce spatial compression-related information, which may represent the relevant information for spatial compression of the channel information of the beam.

[0210] Optionally, the spatial compression related information may include at least one of the following:

[0211] ◆Airspace compression information

[0212] It should be noted that in order to reduce resource occupancy and signaling overhead, etc., in the present application, the network can explicitly / implicitly instruct the terminal device or the terminal device can autonomously decide to perform spatial compression on the channel information of the beam to obtain spatial compression information.

[0213] Spatial domain compression information may be understood as information obtained by performing spatial domain compression on channel information and / or information obtained by further processing the information obtained by performing spatial domain compression on channel information.

[0214] Optionally, the first CSI includes spatial compression information.

[0215] In this way, the present application implements reporting of spatial compression information by including spatial compression information in the first CSI report.

[0216] ◆ Spatial compression vector related information

[0217] It should be noted that in the present application, the network can explicitly / implicitly instruct the terminal device or the terminal device can autonomously decide to use the spatial compression vector to perform spatial compression on the channel information of one or more beams, that is, the spatial compression vector can be used for spatial compression. Among them, the spatial compression vector related information can be the spatial compression vector related information.

[0218] Optionally, the spatial compression vector related information is configured / indicated by the network.

[0219] Optionally, the first CSI report includes information related to the spatial compression vector.

[0220] In this way, the spatial compression vector related information is reported by including the spatial compression vector related information in the first CSI report.

[0221] Optionally, the spatial compression vector may be explicitly or implicitly configured / indicated to the terminal device by the network through signaling (such as DCI, RRC signaling, MAC signaling, UE-specific signaling, etc.), or may be autonomously determined by the terminal device.

[0222] Optionally, the spatial compression vector may be a vector compressed using spatial characteristics or spatial attributes.

[0223] Optionally, the spatial domain compression vector may be a discrete Fourier transform (DFT) vector, or other vectors, etc., and this application does not impose any specific limitation.

[0224] Optionally, the spatial compression vector related information may include at least one of the following:

[0225] ◆ Spatial compression vector information

[0226] Spatial compression vector information can be understood as spatial compression vector information used to characterize spatial compression of channel information of one or more beams. For example, the spatial compression vector information can be information used to characterize a spatial compression vector index, and / or can be information used to characterize a spatial compression vector, and / or can be information used to characterize a spatial compression vector codebook.

[0227] Optionally, at least one of the spatial compression vector index, the spatial compression vector, and the spatial compression vector codebook may be explicitly or implicitly configured / indicated to the terminal device by the network through signaling (such as DCI, RRC signaling, MAC signaling, UE-specific signaling, etc.), or may be determined autonomously by the terminal device.

[0228] Optionally, the first CSI report includes information of at least one of a spatial compression vector index, a spatial compression vector, and a spatial compression vector codebook.

[0229] This is because, when the terminal device autonomously determines at least one of the spatial compression vector index, the spatial compression vector, and the spatial compression vector codebook, the terminal device can explicitly or implicitly report to the network through the first CSI report the information of at least one of the spatial compression vector index, the spatial compression vector, and the spatial compression vector codebook determined by the terminal device, so that the network can know and perform corresponding network scheduling / network configuration. Or, when the network explicitly or implicitly configures at least one of multiple candidate spatial compression vector indexes, multiple candidate spatial compression vectors, and multiple candidate spatial compression vector codebooks to the terminal device, the terminal device can explicitly or implicitly report to the network through the first CSI report the information of at least one of the spatial compression vector index, the spatial compression vector, and the spatial compression vector codebook selected by the terminal device from at least one of the multiple candidate spatial compression vector indexes, the multiple candidate spatial compression vectors, and the multiple candidate spatial compression vector codebooks, so that the network can know and perform corresponding network scheduling / network configuration.

[0230] ◆The length of the spatial compression vector

[0231] The length of the spatial domain compression vector can be understood as the modulus or size of the spatial domain compression vector. For example, the spatial domain compression vector can be a vector with 4 rows and 1 column.

[0232] For example, the spatial domain compression vector may be a vector of 4 rows and 1 column. Thus, when the channel matrix H is a matrix of 4 rows and 4 columns, the channel matrix H performs product processing on the spatial domain compression vector to obtain a vector of 4 rows and 1 column. Thus, the vector of 4 rows and 1 column has a smaller amount of information than the channel matrix H of 4 rows and 4 columns.

[0233] Optionally, the length of the spatial compression vector may be explicitly or implicitly configured / indicated to the terminal device by the network through signaling (such as DCI, RRC signaling, MAC signaling, UE-specific signaling, etc.), or may be autonomously determined by the terminal device.

[0234] Optionally, the first CSI report includes the length of the spatial compression vector.

[0235] This is because, when the terminal device autonomously determines the length of the spatial compression vector, the terminal device can explicitly or implicitly report the length of the spatial compression vector determined by the terminal device to the network through the first CSI report, so that the network can know and perform corresponding network scheduling / network configuration. Alternatively, when the network configures the lengths of multiple candidate spatial compression vectors to the terminal device, the terminal device can explicitly or implicitly report the length of the spatial compression vector selected by the terminal device from the lengths of the multiple candidate spatial compression vectors to the network through the first CSI report, so that the network can know and perform corresponding network scheduling / network configuration.

[0236] ◆Number of spatial compression vectors

[0237] The number of spatial compression vectors may be understood as the number of spatial compression vectors used to perform spatial compression on channel information of one or more beams.

[0238] Optionally, the number of spatial compression vectors may be represented in an explicit or implicit manner. Of course, the present application does not impose any specific restrictions on how to represent the number of spatial compression vectors. For example, if the first CSI report includes information about the spatial compression vector, the number of spatial compression vectors may be calculated based on the spatial compression vector information.

[0239] Optionally, the number of spatial compression vectors may be explicitly or implicitly configured / indicated to the terminal device by the network through signaling (such as DCI, RRC signaling, MAC signaling, UE-specific signaling, etc.), or may be determined autonomously by the terminal device.

[0240] Optionally, the first CSI report includes the number of spatial compression vectors.

[0241] This is because, when the terminal device autonomously determines the number of spatial compression vectors, the terminal device can explicitly or implicitly report the number of spatial compression vectors determined by the terminal device to the network through the first CSI report, so that the network can know and perform corresponding network scheduling / network configuration. Alternatively, when the network configures multiple candidate spatial compression vectors to the terminal device, the terminal device can explicitly or implicitly report the number of spatial compression vectors selected by the terminal device from the multiple candidate spatial compression vectors to the network through the first CSI report, so that the network can know and perform corresponding network scheduling / network configuration.

[0242] ◆Window of spatial compression vector

[0243] The window of spatial compression vectors can be understood as being used to select a used spatial compression vector from a plurality of candidate spatial compression vectors in the window of spatial compression vectors. In other words, the window of spatial compression vectors can be used to determine a plurality of candidate spatial compression vectors.

[0244] Optionally, the window of the spatial compression vector may be explicitly or implicitly configured / indicated to the terminal device by the network through signaling (such as DCI, RRC signaling, MAC signaling, UE-specific signaling, etc.), or may be autonomously determined by the terminal device.

[0245] Optionally, the window of the spatial domain compression vector may include window length information and / or window start position information, wherein the window length information may indicate / characterize the window length of the spatial domain compression vector, and the window start position information may indicate / characterize the window start position of the spatial domain compression vector.

[0246]

Related information about spatial compression of one or more beams

[0247] Optionally, the first CSI report includes information related to spatial compression of one or more beams.

[0248] In this way, the present application realizes reporting of the spatial compression related information of one or more beams through the first CSI report, so that the network can obtain the spatial compression related information of one or more beams, and perform relevant channel assessment / network configuration / network scheduling, etc.

[0249] Optionally, the spatial compression related information of one or more beams may be determined according to the length of the spatial compression vector. The length of the spatial compression vector may be explicitly or implicitly configured / indicated to the terminal device by the network through signaling (such as DCI, RRC signaling, MAC signaling, UE-specific signaling, etc.), or may be determined autonomously by the terminal device.

[0250] It should be noted that, in combination with the above content, the terminal device can perform spatial compression on the channel information of one or more beams according to the length of the spatial compression vector to obtain spatial compression related information of one or more beams. Among them, the length of the spatial compression vector can be determined by network configuration or autonomously by the terminal device.

[0251] Optionally, the spatial compression related information of one or more beams may be determined according to the number of spatial compression vectors. The number of spatial compression vectors may be explicitly or implicitly configured / indicated to the terminal device by the network through signaling (such as DCI, RRC signaling, MAC signaling, UE-specific signaling, etc.), or may be determined autonomously by the terminal device.

[0252] It should be noted that, in combination with the above content, the terminal device can perform spatial compression on the channel information of one or more beams according to the number of spatial compression vectors to obtain spatial compression related information of one or more beams. Among them, the number of spatial compression vectors can be determined by network configuration or terminal device autonomously.

[0253] Optionally, the spatial compression related information of one or more beams may be determined according to a window of a spatial compression vector. The window of the spatial compression vector may be explicitly or implicitly configured / indicated to the terminal device by the network through signaling (such as DCI, RRC signaling, MAC signaling, UE-specific signaling, etc.), or may be determined autonomously by the terminal device.

[0254] It should be noted that, in combination with the above content, the terminal device can determine multiple candidate spatial compression vectors based on the window of the spatial compression vector configured by the network, and then select a spatial compression vector from the multiple candidate spatial compression vectors, and then perform spatial compression on the channel information of one or more beams according to the selected spatial compression vector to obtain spatial compression related information of one or more beams.

[0255] 4) CSI reporting on PUSCH

[0256]

describe

[0257] In the network scenario of the present application, the present application can support various types of CSI feedback, such as at least one of Type I CSI feedback, Type IICSI feedback, Enhanced Type IICSI feedback, and Further Enhanced Type IICSI feedback. Of course, the CSI feedback supported by the present application is not limited to the above examples, and there may be other examples, which are not specifically limited.

[0258] The basic principle of Type I CSI feedback is that the terminal device can match the codebook specified by the protocol with the estimated channel, select the codebook that best matches the channel, and then feed back the index corresponding to the codebook to the network device.

[0259] The basic principle of Type IICSI feedback, enhanced Type IICSI feedback and further enhanced Type IICSI feedback is to use high-resolution CSI feedback to perform certain processing on the estimated channel, thereby feeding back the processed information, including quantization of amplitude and phase, etc.

[0260] The CSI report on PUSCH supports Type I CSI feedback, Type IICSI feedback, enhanced Type IICSI feedback, and further enhanced Type IICSI feedback.

[0261] For Type I CSI feedback, Type IICSI feedback, enhanced Type IICSI feedback, and further enhanced Type IICSI feedback on PUSCH, a CSI report may consist of two parts, namely, Part 1 and Part 2.

[0262] [Part 1 and Part 2]

[0263] The payload size of part 1 may be fixed, part 1 may be used to determine the number of information bits in part 2, and the entire information of part 1 needs to be transmitted before part 2.

[0264] Since the size of part 1 is fixed, and the size of part 2 is variable and depends on part 1, the present application may be implemented as follows:

[0265] ◆Put some important information in part 1, so that when part 2 is discarded, the terminal device can still report the important information to the network device through part 1 as a relevant reference to avoid the loss of important information;

[0266] ◆Put some information that determines the size of part 2 in part 1, so that the network device can use this information to retrieve part 2, so as to avoid blind detection of part 2 and improve retrieval efficiency.

[0267] ◆Put some information with small amount of information / data in part 1, and put some information with large amount of information / data in part 2, so that the network device can quickly retrieve part 1 because part 1 has a small amount of information.

[0268] Optionally, the information contained in Part 1 and Part 2 is different.

[0269] For example, for Type I CSI feedback: Part 1 may include RI (if reported), CRI (if reported), and CQI of the first codeword (if reported); Part 2 may include PMI (if reported), CQI of the second codeword when RI (if reported) is greater than 4 (if reported), and LI (if reported).

[0270] For another example, for Type IICSI feedback: Part 1 may include RI (if reported), CQI, and an indication of the number of non-zero wideband amplitude coefficients per layer of Type IICSI. The fields of Part 1 (RI, CQI, and an indication of the number of non-zero wideband amplitude coefficients per layer) are encoded separately. Part 2 may include PMI and LI (if reported) of Type IICSI. Part 1 and Part 2 are encoded separately.

[0271] For another example, for enhanced Type IICSI feedback: Part 1 may include RI (if reported), CQI, and an indication of the total number of non-zero amplitude coefficients of all layers of enhanced Type IICSI. The fields of Part 1 (RI, CQI, and an indication of the total number of non-zero amplitude coefficients) are encoded separately. Part 2 may include the PMI of enhanced Type IICSI. Part 1 and Part 2 may be encoded separately.

[0272] Optionally, the channel-related information of one or more beams may be located in part 1 and / or part 2 of the first CSI report. In this way, by placing the channel-related information of one or more beams in part 1 and / or part 2, it is helpful to improve flexibility.

[0273] For example, part 1 includes at least one of channel information of one or more beams, CSI information of one or more beams, and spatial compression related information of one or more beams.

[0274] For another example, part 2 includes at least one of channel information of one or more beams, CSI information of one or more beams, and spatial compression related information of one or more beams.

[0275] Optionally, part of the channel-related information of one or more beams is located in part 1 of the first CSI report, and the rest of the information is located in part 2.

[0276] For example, part 1 includes a portion of the channel information of one or more beams, and part 2 includes other portion of the channel information of the one or more beams.

[0277] Optionally, the channel information of one or more beams is located in part 1. This is because, when the channel information of one or more beams is important information, the present application can put the channel information of one or more beams into part 1, which is helpful to avoid the loss of important information or avoid blind detection of part 2.

[0278] Optionally, part of the channel information of one or more beams is located in part 1, and the rest of the information is located in part 2. In this way, when the channel information of one or more beams has a large amount of information, it can be split to be placed in part 1 and part 2.

[0279] Optionally, the channel information of one or more beams is located in part 2. This is because, when the channel information of one or more beams is unimportant information, the present application can put it in part 2. Alternatively, since the amount of information of the channel information of one or more beams is large, the present application needs to put it in part 2.

[0280] Optionally, the spatial compression related information of one or more beams is located in part 1. This is because when the spatial compression related information of one or more beams is important information, the present application can put it in part 1, which is conducive to avoiding the loss of important information or avoiding blind detection of part 2.

[0281] Optionally, part of the information related to the spatial compression of one or more beams is located in part 1, and the rest of the information is located in part 2. In this way, when the information related to the spatial compression of one or more beams has a large amount of information, it can be split to be placed in part 1 and part 2. Alternatively, when the information related to the spatial compression of one or more beams contains both important information and unimportant information, the present application can place the important information in part 1 and the unimportant information in part 2.

[0282] Optionally, the spatial compression related information of one or more beams is located in part 2. This is because, when the spatial compression related information of one or more beams is unimportant information, the present application can put it in part 2. Alternatively, since the amount of information related to the spatial compression of one or more beams is large, the present application needs to put it in part 2.

[0283] Optionally, the spatial domain compression information is located in part 1. This is because, when the spatial domain compression information is important information, the present application can put it in part 1, thereby facilitating the avoidance of loss of important information or avoiding blind detection of part 2.

[0284] Optionally, part of the spatial domain compressed information is located in part 1, and the rest of the information is located in part 2. In this way, when the spatial domain compressed information has a large amount of information, it can be split into part 1 and part 2.

[0285] Optionally, the spatial domain compression information is located in part 2. This is because, when the spatial domain compression information is unimportant information, the present application may place it in part 2. Alternatively, since the amount of spatial domain compression information is large, the present application needs to place it in part 2.

[0286] Optionally, the spatial domain compression vector related information is located in part 1. This is because when the spatial domain compression vector related information is important information, the present application can put it in part 1, thereby facilitating the avoidance of loss of important information or avoiding blind detection of part 2.

[0287] Optionally, part of the spatial domain compression vector related information is located in part 1, and the rest of the information is located in part 2. In this way, when the spatial domain compression vector related information has a large amount of information, it can be split into part 1 and part 2.

[0288] Optionally, the spatial domain compression vector related information is located in part 2. This is because when the spatial domain compression vector related information is unimportant information, the present application may place it in part 2. Alternatively, since the amount of information related to the spatial domain compression vector is large, the present application needs to place it in part 2.

[0289] Group 0, Group 1 and Group 2

[0290] It should be noted that part 2 of the first CSI report may include group 0, group 1 and group 2. Group 0, group 1 and group 2 have different priorities.

[0291] For example, the priority of group 0 is higher than the priority of group 1, and the priority of group 1 is higher than the priority of group 2.

[0292] In this way, the present application can utilize the priority between group 0, group 1, and group 2 to place channel-related information of one or more beams.

[0293] For example, information in group 0 has a higher priority than information in group 1.

[0294] Optionally, each of group 0, group 1, and group 2 includes different information in the channel-related information of one or more beams.

[0295] For example, group 0 includes channel information of one or more beams, group 1 includes CSI information of one or more beams, and group 2 includes spatial compression related information of one or more beams.

[0296] Optionally, group 0 includes at least one item of channel information of one or more beams, CSI information of one or more beams, and spatial compression related information of one or more beams.

[0297] Optionally, group 1 includes at least one item of channel information of one or more beams, CSI information of one or more beams, and spatial domain compression related information of one or more beams.

[0298] Optionally, group 2 includes at least one item of channel information of one or more beams, CSI information of one or more beams, and spatial domain compression related information of one or more beams.

[0299] Of course, when reporting channel-related information of one or more beams, the channel information of one or more beams and the CSI information of one or more beams may not be reported at the same time, and there is no specific limitation on this.

[0300] Optionally, group 1 includes at least one of the following: frequency domain vector information, non-zero coefficient information, and position indication information.

[0301] It should be noted that frequency domain vector information can be understood as information used to perform spatial domain compression on the channel information of one or more beams, or vector information for frequency domain compression; it can also be understood as information used to perform spatial domain compression on the channel information or equivalent channel information, or vector information for frequency domain compression.

[0302] The non-zero coefficient information may include amplitude and / or phase information of the non-zero coefficient.

[0303] The position indication information may be used to indicate the position of the non-zero coefficient.

[0304] In this way, since group 1 has a higher priority than group 2, the non-zero coefficient information included in group 1 can be the information of non-zero coefficients with higher priority; the bit indication information included in group 1 can be used to indicate the position of non-zero coefficients with higher priority.

[0305] Optionally, group 2 includes at least one of the following: non-zero coefficient information, position indication information.

[0306] In this way, since group 2 has a lower priority than group 1, the non-zero coefficient information included in group 2 can be information of non-zero coefficients with lower priority; the bit indication information included in group 2 can be used to indicate the position of non-zero coefficients with lower priority.

[0307] Optionally, group 0 may include at least one of the following: spatial domain compression vector related information, spatial domain compression vector information, and frequency domain vector information.

[0308] In this way, since group 0 has the highest priority than group 1 and group 2, the non-zero coefficient information included in group 0 can be the information of the non-zero coefficient with the highest priority; the bit indication information included in group 0 can be used to indicate the position of the non-zero coefficient with the highest priority.

[0309] 5) Priority of the first CSI report

[0310] A first CSI report can be associated with a priority value Pri CSI (y, k, c, s):

[0311] Pri CSI (y, k, c, s) = a·N cells ·M s y+N cells ·M s ·k+M s ·c+s.

[0312]

Parameter y

[0313] It should be noted that the value of the parameter y may be determined by the type of the first CSI report.

[0314] For example, if the first CSI report is an aperiodic CSI report scheduled to be carried on the PUSCH, the value of the parameter y may be 0.

[0315] For another example, if the first CSI report is a semi-persistent CSI report scheduled to be carried on the PUSCH, the value of the parameter y may be 1.

[0316] For another example, if the first CSI report is a semi-persistent CSI report scheduled to be carried on the PUCCH, the value of the parameter y may be 2.

[0317] For another example, if the first CSI report is a periodic CSI report scheduled to be carried on the PUCCH, the value of the parameter y may be 3.

[0318]

Parameter k

[0319] It should be noted that, in the network scenario of the present application, the value of the parameter k can be determined by the type of information included in the first CSI report.

[0320] Optionally, the value of the parameter k may be indicated / determined by information in cSI-ReportConfig (eg, reportQuantity).

[0321] For example, for the first CSI report containing (carrying / bearing) L1-RSRP or L1-SINR, the value of the parameter k may be 0;

[0322] For another example, for the first CSI report that does not include (does not carry / bear) L1-RSRP or L1-SINR, the value of the parameter k may be 1.

[0323] For another example, for the first CSI report containing channel-related information of one or more beams, the value of the parameter k can be one of 0, 0.5, 1, 2, 3, etc.

[0324] For the convenience of distinction and description, the present application may refer to the parameter k corresponding to the priority of the first CSI report as a "first target parameter", where the first target parameter is related to the type of information included in the first CSI report.

[0325] Optionally, the value of the first target parameter may be determined according to the type of information included in the first CSI report. For example, for the first CSI report including (carrying / bearing) L1-RSRP or L1-SINR, the value of the first target parameter is 0.

[0326] Optionally, the value of the first target parameter may be a first preset value.

[0327] Furthermore, the first preset value may be one of -1, -0.5, 0, 0.5, 1, 2, 3, etc.

[0328] Furthermore, the first preset value may be a network configuration, a protocol definition, or a preconfiguration.

[0329] Optionally, the value of the first target parameter may be related to the channel-related information of one or more beams. For example, corresponding to the first CSI report containing the channel-related information of one or more beams, the value of the first target parameter may be one of -1, -0.5, 0, 0.5, 1, 2, 3, etc.

[0330]

Parameter c

[0331] Optionally, the value of parameter c may be a serving cell index value (serving cell index).

[0332] Optionally, the value of parameter c can be network configuration, protocol definition, or pre-configured.

[0333]

Parameters

[0334] Optionally, the value of the parameter s may be the value of the report configuration identifier (reportConfigID) in CSI-ReportConfig.

[0335] Optionally, the value of parameter s can be network configuration, protocol definition, or pre-configured.

[0336] [Parameter N cells 】

[0337] Optional, parameter N cells The value of may be the value of a higher-level parameter maxNrofServingCells, which may be used to configure the maximum number of serving cells.

[0338] Optional, parameter N cells The value can be network configuration, protocol definition, or preconfigured.

[0339] [Parameter M s 】

[0340] Parameter M s The value of may be the value of the higher-level parameter maxNrofCSI-ReportConfigurations, which may be used to configure the maximum number of configurations for CSI reports.

[0341] Optional, parameter M s The value can be network configuration, protocol definition, or preconfigured.

[0342]

Parameter a

[0343] Optionally, the value of parameter a may be determined by the value range of parameter k.

[0344] For example, if the value of parameter k is one of 0 and 1, the value of parameter a can be 2; if the value of parameter k can be one of 0, 0.5, 1, 2 and 3, the value of parameter a can be 5.

[0345] Optionally, the value of parameter a may also be a preset value.

[0346] For example, the preset value may be 2, 5, etc.

[0347] Optionally, the value of parameter a can be an integer greater than 1.

[0348] It should be noted that the name of the maximum number of serving cells specified in the 5GNR standard is maxNrofServingCells, the name of the configuration index of the CSI report is reportConfigID, and the name of the maximum number of configurations of the CSI report is maxNrofCSIReportConfigurations, but the names with the same meaning specified in other standards are also applicable to this application, that is, this application does not limit the names of these parameters.

[0349] Priority comparison

[0350] Optionally, if the priority value Pri associated with a first CSI report is CSI (y, k, c, s) is less than the priority value Pri associated with another first CSI report CSI (y, k, c, s), then the priority of the one first CSI report is higher than the priority of the other first CSI report.

[0351] Optionally, if two first CSI reports are transmitted on the same carrier and at least one OFDM symbol overlaps with each other in the time domain, the two first CSI reports collide during transmission.

[0352] For example, when the terminal device is configured to transmit two conflicting first CSI reports,

[0353] If the values ​​of y between the two first CSI reports are different, except for the case where the value of y in one report is 2 and the value of y in the other report is 3, the following rules apply:

[0354] ◆Terminal devices do not transmit priority value Pri CSI (y, k, c, s) The first CSI report with the higher value;

[0355] - Otherwise, the two first CSI reports may be multiplexed or discarded based on the priority value.

[0356] 6) CSI processing unit (CPU) occupied by the first CSI report

[0357]

meaning

[0358] In a component carrier (CC), the number of simultaneous CSI calculations supported by the terminal device is indicated by a high-level parameter (such as simultaneous CSI reports per component carrier (simultaneousCSI-ReportsPerCC)), N CPU .

[0359] In all component carriers, the number of simultaneous CSI calculations supported by the terminal device can be indicated by a high-level parameter (such as simultaneous CSI-ReportsAllCC). CPU .

[0360] If the terminal device supports simultaneous CSI calculation, the terminal device is said to have N for processing CSI reports. CPU CPUs.

[0361] It should be noted that the CPU occupied by the CSI report can represent the terminal device's ability to process CSI. CPU , which can be understood as the maximum number or total number of CPUs supported by the terminal device. In addition, N CPU The terminal device may report to the network device through high-level parameters (such as simultaneousCSI-ReportsPerCC and / or simultaneousCSI-ReportsAllCC).

[0362] If the CSI calculation in a given OFDM symbol has occupied L CPUs, the terminal device has N CPU -L unused CPUs.

[0363] In N CPU - Among L unoccupied CPUs, if N CSI reports occupy their respective CPUs in turn on the same OFDM symbol, and the number of CPUs occupied by the nth (n=0, ..., N-1) CSI report is The terminal device does not need to update N-M1 CSI reports with low priority, where M1 (0≤M1≤N) is the number of CSI reports that make The maximum value established.

[0364] For example, the network device configures three CSI reports for the terminal device, namely CSI report 0, CSI report 1, and CSI report 2. Among the priorities corresponding to the three CSI reports, the priority of CSI report 0 is higher than the priority of CSI report 1, and the priority of CSI report 1 is higher than the priority of CSI report 2. In the case that the terminal device has 10 unoccupied CPUs, if CSI report 0 occupies 5 CPUs (i.e. ), CSI reports 1 occupies 3 CPUs (i.e. ), CSI reports 2 taking up 5 CPUs (i.e. ), then since 5+3+5>10, the terminal device does not need to update CSI report 2.

[0365] [The amount of CPU used by a first CSI report]

[0366] Optionally, the number of CPUs occupied by a first CSI report is O CPU One of the following can exist:

[0367] ◆ If the high-level parameter reportQuantity in CSI-ReportConfig is set to 'none' and the high-level parameter trs-Info is configured in CSI-RS-ResourceSet, then O CPU = 0. It should be noted that this method may exist or may not exist, and there is no specific limitation on this.

[0368] ◆ If the high-level parameter reportQuantity in CSI-ReportConfig is set to 'cri-RSRP', 'ssb-Index-RSRP', 'cri-SINR', 'ssb-Index-SINR' or 'none' (in this case, the high-level parameter trs-Info is not configured in CSI-RS-ResourceSet), then O CPU = 1. It should be noted that this method may exist or may not exist, and there is no specific limitation on this.

[0369] ◆If the higher-layer parameter reportQuantity in CSI-ReportConfig is set to 'cri-RI-PMI-CQI', 'cri-RI-i1', 'cri-RI-i1-CQI', 'cri-RI-CQI' or 'cri-RI-LI-PMI-CQI', then:

[0370] -If max(μ PDCCH , μ CSI-RS ,μ UL)<3, the first CSI report is triggered aperiodically, L=0 CPUs are occupied, the terminal device does not send PUSCH with transport blocks (or HARQ-ACK or both), and the CSI corresponds to a single CSI with wideband frequency granularity and corresponds to a maximum of 4 CSI-RS ports in a single resource, where codebookType is set to 'typeI-SinglePanel' (or reportQuantity is set to 'cri-RI-CQI'), then O CPU =N CPU That is to say, the number of CSI processing units occupied by the first CSI report may be the total number of CPUs reported by the terminal device.

[0371] - If the codebookType in the CSI-ReportConfig corresponding to the first CSI report is set to "typePeI-SinglePanel", and the corresponding CSI-RS resource set for channel measurement is configured with 2 resource groups, which contain N resource pairs, and M is the number of resources used under the assumption of single-site transmission, then O CPU =X·N+M, where X can be configured by the high-level parameter numberOfsingleTRP-CSI-Mode1, and x∈{0, 1, 2}. That is, the number of CPUs occupied by the first CSI report is X·N+M.

[0372] -Otherwise, CPU =K s , K s It may be the number of NZP-CSI-RS resources (also referred to as channel measurement resources) used for channel measurement in NZP-CSI-RS-ResourceSet. In other words, the number of CPUs occupied by the first CSI report is the number of CSI-RS resources used for channel measurement associated with the first CSI report.

[0373] Optionally, the number of CPUs occupied by the first CSI report is O CPU One of the following may exist: CPU =K s , O CPU >K s , O CPU <K s , O CPU =K s +σ, where σ is an offset value specified by pre-configuration, network configuration, or protocol.

[0374] Optionally, the number of CPUs occupied by the first CSI report is O CPU One of the following may exist: CPU =K·L、OCPU =K·L+M. K is the number of resources for channel measurement associated with the first CSI report, or K is the number of one or more beams, L is the value reported by the terminal device capability, and M is the number of resources used under the assumption of single-site transmission.

[0375] Optionally, the number of CPUs occupied by the first CSI report is O CPU can be determined by K. For example, O CPU =K·L、O CPU =K·L+M, etc.

[0376] Optionally, the number of CPUs occupied by the first CSI report is O CPU It may be a second preset value, which may be pre-configured, network configured, or specified by a protocol.

[0377] It should be noted that the second preset value can be understood as a fixed value, which is pre-configured, network configured or specified by the protocol. CPU It is pre-configured, network configured, or specified by the protocol.

[0378] [Number of OFDM symbols occupied by the CPU]

[0379] Optionally, for the first CSI report in which the high-level parameter reportQuantity in CSI-ReportConfig is not set to 'none', the number of OFDM symbols occupied by the CPU occupied by the first CSI report may be as follows:

[0380] - If the first CSI report is a periodic CSI report or a semi-persistent CSI report (excluding the first (initial) semi-persistent CSI report on the PUSCH after the report is triggered by the PDCCH), the OFDM symbols occupied by the CPU occupied by the first CSI report are:

[0381] Starting from the first symbol of the earliest one of the CSI-RS / CSI-IM / SSB resources used for channel measurement or interference measurement, and the respective latest CSI-RS / CSI-IM / SSB timing is no later than the corresponding CSI reference resource, until the last symbol of the reporting resource, where the reporting resource is the PUSCH / PUCCH used to carry the periodic CSI report or semi-continuous CSI report.

[0382] -If the first CSI report is a non-periodic CSI report, the OFDM symbols occupied by the CPU of the first CSI report are: starting from the first symbol after the PDCCH that triggers the non-periodic CSI report to the last symbol of the reporting resource, where the reporting resource is the PUSCH used to carry the non-periodic CSI report.

[0383] - If the first CSI report is the first semi-persistent CSI report on the PUSCH after the report is triggered by the PDCCH, the OFDM symbols occupied by the CPU of the first CSI report are:

[0384] Starting from the first symbol after the PDCCH until the last symbol of the reporting resource, wherein the reporting resource is the PUSCH used to carry the first semi-persistent CSI report.

[0385] Optionally, for the first CSI report in which the high-level parameter reportQuantity in CSI-ReportConfig is set to 'none' and the high-level parameter trs-Info is not configured in CSI-RS-ResourceSet, the number of OFDM symbols occupied by the CPU occupied by the first CSI report may be as follows:

[0386] - If the first CSI report is a semi-persistent CSI report (excluding the first (initial) semi-persistent CSI report on the PUSCH after the report is triggered by the PDCCH), the OFDM symbols occupied by the CPU of the first CSI report are:

[0387] Starting from the first symbol of the earliest one in each transmission occasion of the periodic or semi-persistent CSI-RS / SSB resource for channel measurement for L1-RSRP calculation, until Z′3 symbols after the last symbol of the latest one in the CSI-RS / SSB resource for channel measurement for L1-RSRP calculation in each transmission occasion.

[0388] -If the first CSI report is a non-periodic CSI report, the OFDM symbols occupied by the CPU of the first CSI report are: from the first symbol after the PDCCH that triggers the first CSI report to the last symbol between Z3 symbols after the first symbol after the PDCCH that triggers the first CSI report and Z′3 symbols after the measurement resource; wherein the measurement resource is the latest one of the CSI-RS / SSB resources for channel measurement used for L1-RSRP calculation.

[0389] 7) CSI processing time requirement for the first CSI report

[0390] It should be noted that when the CSI request field on the DCI triggers the first CSI report on the PUSCH, if the start time of the first uplink symbol used to carry the first CSI report (including the impact of time advance) is not earlier than symbol Z ref , and the start time of the first uplink symbol used to carry the mth first CSI report (including the effect of time advance) is no earlier than symbol Z′ ref (m), then for the mth triggered first CSI report, the terminal device can provide a valid first CSI report.

[0391] Among them, Z ref Defined as the next uplink symbol, the cyclic prefix (CP) of the next uplink symbol after the last symbol of the PDCCH triggering the first CSI report ends T = (Z) (2048 + 144) · κ2 -μ ·T c +T switch start.

[0392] Among them, Z′ ref (m) is defined as the next uplink symbol, the CP of which is T′=(Z′)(2048+144)·κ2 after the last symbol of the measurement resource ends. -μ ·T c Initially, the measurement resource is the latest one of the non-periodic CSI-RS resource for channel measurement (when the non-periodic CSI-RS is used for channel measurement of the mth triggered first CSI report), the non-periodic CSI-IM for interference measurement, and the non-periodic NZP CSI-RS for interference measurement.

[0393] ◆When the CSI request field on the DCI triggers the first CSI report on the PUSCH, if the start time of the first uplink symbol used to carry the first CSI report (including the time advance effect) is earlier than symbol Z ref ,but:

[0394] - If no HARQ-ACK or transport block is multiplexed on the PUSCH, the terminal device may ignore the DCI. In other words, the terminal device may not report the first CSI report triggered by the DCI.

[0395] ◆When the CSI request field on the DCI triggers the first CSI report on the PUSCH, if the start time of the first uplink symbol used to carry the mth first CSI report (including the time advance effect) is earlier than symbol Z′ ref (m), then:

[0396] -If the number of triggered first CSI reports is 1 and no HARQ-ACK or transport block is multiplexed on PUSCH, the terminal device can ignore the DCI.

[0397] - Otherwise, the terminal device does not need to update the CSI for the nth triggered first CSI report.

[0398] ◆Definition of Z and Z′

[0399] In the network scenario of the present application, the CSI processing time requirement of the first CSI report can be determined according to (Z, Z′). m＝0，...，M-1 (Z(m)), Z′=max m＝0，...，M-1 (Z′(m)), M is the number of updated first CSI reports, and (Z(m) corresponds to the above Z ref , Z′(m) corresponds to the above Z′ ref (m).

[0400] (Z(m), Z′(m)) corresponds to the first CSI report of the mth update, and can be specifically defined as follows:

[0401] -If max(μ PDCCHH , μ CSI-RS ,μ UL )<3, a CSI report is triggered non-periodically, L=0 CPUs are occupied, the terminal device does not send PUSCH with transport blocks (or HARQ-ACK or both), and the CSI corresponds to a single CSI with broadband frequency granularity, and corresponds to a maximum of 4 CSI-RS ports in a single resource, where codebookType is set to 'typeI-SinglePanel' or reportQuantity is set to 'cri-RI-CQI', then (Z(m), Z′(m)) can be defined as (Z1, Z′1) in Table 1.

[0402] Table 1 CSI processing time requirements1

[0403]

[0404] In Table 1, μ is the subcarrier spacing configuration and corresponds to min(μ PDCCH , μ CSI-RS ,μ UL ). PDCCH The subcarrier spacing of the PDCCH corresponding to the transmission of DCI, μ UL The subcarrier spacing of the PUSCH corresponding to the CSI, μ CSI-RS The subcarrier spacing of the aperiodic CSI-RS corresponding to DCI triggering.

[0405] - If the CSI to be transmitted corresponds to a wideband frequency granularity and corresponds to up to 4 CSI-RS ports in a single resource, where codebookType is set to 'typeI-SinglePanel' or reportQuantity is set to 'cri-RI-CQI', then (Z(m), Z'(m)) can be defined as (Z1, Z'1) of Table 2 ) .

[0406] Table 2 CSI processing time requirements

[0407]

[0408] In Table 2, μ is the subcarrier spacing configuration and corresponds to min(μ PDCCH , μ CSI-RS ,μ UL ).

[0409] - If the transmitted CSI corresponds to wideband frequency granularity, where reportQuantity is set to 'ssb-Index-SINR' or 'cri-SINR', then (Z(m), Z'(m)) can be defined as (Z1, Z'1) of Table 2.

[0410] - If reportQuantity is set to 'cri-RSRP' or 'ssb-Index-RSRP', (Z(m), Z'(m)) can be defined as (Z3, Z'3) in Table 2. μ It is determined based on the beam reporting timing (beamReportTiming) capability reported by the terminal device, KB l It is determined based on the beam switching timing (beamSwitchTiming) capability reported by the terminal device. Or,

[0411] -Otherwise, (Z(m), Z′(m)) can be defined as (Z2, Z′2) in Table 2.

[0412] Optionally, the CSI processing time requirement for the first CSI report may be determined by (Z(m), Z′(m)).

[0413] Optionally, the CSI processing time requirement of the first CSI report may be determined by CSI processing time requirement 1 and / or CSI processing time requirement 2.

[0414] It should be noted that the CSI processing time requirement 1 can represent the value of (Z1, Z′1) under different values ​​of μ. For example, if μ=0, then (Z1, Z′1)=(22, 16). In addition, the CSI calculation time requirement 1 can be understood as the CSI time requirement 1 of the second CSI report.

[0415] Therefore, the present application determines the CSI processing time requirement of the first CSI report according to the CSI calculation time requirement 1, which can be understood as determining the value of the CSI processing time requirement of the first CSI report according to the value of (Z1, Z′1).

[0416] The CSI processing time requirement 2 may be represented by the values ​​of (Z1, Z′1), (Z2, Z′2), and / or (Z3, Z′3) under different values ​​of μ. For example, if μ=0, then (Z1, Z′1)=(10, 8), (Z2, Z′2)=(40, 37), (Z3, Z′3)=(22, X0). In addition, the CSI calculation time requirement 2 may be understood as the CSI time requirement 2 of the second CSI report.

[0417] Therefore, the present application determines the CSI processing time requirement of the first CSI report according to the CSI calculation time requirement 2, which can be understood as determining the value of the CSI processing time requirement of the first CSI report according to the value of (Z1, Z′1), (Z2, Z′2) or (Z3, Z′3).

[0418] For example, the CSI processing time requirement of the first CSI report may be (Z1, Z′1), (Z2, Z′2) and / or (Z3, Z′3).

[0419] For another example, the CSI processing time requirement for the first CSI report may be (Z1+Δz1, Z′1+Δz′ i ), (Z2+Δz2, Z′2+Δz′2), and / or (Z3+Δz3, Z′3+Δz′3).

[0420] Where Δz m (m=1,2,3,4) and Δz′ m Can be positive or negative, and Δz m and Δz′ m It can be pre-configured, network configured or specified by the protocol or depend on the capabilities of the terminal device (such as UE capabilities).

[0421] For the convenience of distinction and description, Z(m) may be referred to as the second target parameter, and Z′(m) may be referred to as the third target parameter. Therefore, the CSI processing time requirement of the first CSI report may be determined by the second target parameter and the third target parameter.

[0422] Optionally, the second target parameter is a third preset value;

[0423] Optionally, the third target parameter is a fourth preset value.

[0424] It should be noted that the third preset value can be understood as a fixed value, which is pre-configured, network configured or defined by a protocol, or depends on the capabilities of the terminal device (such as UE capabilities). The fourth preset value can be understood as a fixed value, which is pre-configured, network configured or defined by a protocol, or depends on the capabilities of the terminal device (such as UE capabilities).

[0425] 8) Priority of non-zero coefficient elements in part 2 of the first CSI report

[0426] When the first CSI report on PUSCH consists of part 1 and part 2, the terminal device can omit part of the CSI in part 2. The CSI omitted from part 2 has a priority order. Rep is the number of the first CSI report configured on PUSCH. Priority 0 indicates the highest priority, priority 2N Rep Indicates the lowest priority, the nth first CSI report corresponds to N Rep The nth minimum Pri in the first CSI report i,CSi CSI report of (y,k,c,s) values.

[0427] For a given first CSI report, the subbands indicated by the higher layer parameter csi-ReportingBand, with a value of '1', are numbered consecutively in an increasing manner, where the lowest subband with the csi-ReportingBand value set to '1' is numbered as subband 0. When omitting part 2 information for a particular priority level, the terminal device should omit all information at that priority level.

[0428] Optionally, for enhanced Type II, enhanced Type II with predicted PMI configured with N4=1, for a given first CSI report, the non-zero coefficient element i indicated by indices l, i, and f 2,4,l 、i 2,5,l and i 1,7,l , is associated with a priority value Pri(l,i,f)=2·L·v·π(f)+v·i+l. and l=1,2,...,v,i=0,1,...,2L-1,f=0,1,...,M v -1, is a network configuration. The higher the priority of a non-zero coefficient element, the lower the Pri(l, i, f) associated with the non-zero coefficient element. The CSI of omitted part 2 is performed in a preset priority order, where:

[0429] - Group 0 includes i 1,1 (if reported), i 1,2 (if reported), i i,8，l (l=1, ..., v).

[0430] - Group 1 includes i 1,5 (if reported), i 1,6,l (if reported), i 1,7,l In The highest priority element, i 2,3,l 、i 2,4,l In The highest priority element, i 2,5,l (l=1,...,v) The highest priority element.

[0431] - Group 2 includes i 1,7,l In The lowest priority element, i 2,4,l In The lowest priority element, i 2,5,l (l=1,...,v) The lowest priority element.

[0432] Optionally, for further enhanced Type II port selection, further enhanced Type II port selection for predicted PMI, for a given first CSI report, the non-zero coefficient element i indicated by indexes l, i and f 2,4,l 、i 2,5,l and i 1,7,l , associated with a priority value Pri(l,i,f)=K1·v·f+v·i+l. Where l=1,2,...,v,i=0,1,...,K1-1,f=0,1,...,M-1. The higher the priority of the non-zero coefficient element, the lower the Pri(l,i,f) associated with the non-zero coefficient element. The CSI of omitted part 2 is performed in a preset priority order, where:

[0433] - Group 0 includes i 1,2 (if reported), i 1,6 (if reported), i i,al (l=1, ..., v).

[0434] - Group 1 includes i 1,7,l In The highest priority element, i 2,3,l 、i 2,4,l In The highest priority element, i 2,5,l(l=1,...,v) The highest priority element.

[0435] - Group 2 includes i 1,7，l In The lowest priority element, i 2,4,l In The lowest priority element, i 2,5,l (l=1,...,v) The lowest priority element.

[0436] Optionally, for enhanced Type II of CJT reporting, for a given first CSI report, the non-zero coefficient element i indicated by indices l, i, and f 2,4,l 、i 2,5,l and i 1，7，l , with a priority value Among them, l=1,2,...,v, f=0,1,...,M v -1, j = 1, ..., N, and The higher the priority of a non-zero coefficient element, the higher the Pri(l, i j , f, j) is lower. The CSI of omitted part 2 is performed according to the preset priority order, where:

[0437] - Group 0 includes i 1,1 (if reported), i 1,2 (if reported), i 1,8,l (l=1, ..., v).

[0438] - Group 1 includes i 1,5 (if reported), i 1,6,l (if reported), i 1,7，l In The highest priority element, i 2,3,l 、i 2,4,l In The highest priority element, i 2,5,l (l=1,...,v) The highest priority element, i 1,9 (if reported).

[0439] - Group 2 includes i 1,7，l In The lowest priority element, i 2,4,l In The lowest priority element, i 2,5,l (l=1,...,v) The lowest priority element.

[0440] Optionally, for further enhanced Type II port selection for CJT reporting, for a given first CSI report, the non-zero coefficient element i indicated by indices l, i, and f 2,4,l 、i 2,5,l and i 1,7，l , with a priority value Association. Where l = 1, 2, ..., v, i j =0,1,...,K 1，j -1, f=0,1,...,M-1,j=1,...,N,K 1，j The higher the priority of a non-zero coefficient element, the higher the Pri(l, i j , f, j) is lower. The CSI of omitted part 2 is performed according to the preset priority order, where:

[0441] - Group 0 includes i 1,2 (if reported), i 1,6 (if reported), i 1,8,l (l=1, ..., v).

[0442] - Group 1 includes i 1,7，l In The highest priority element, i 2,3,l 、i 2,4,l In The highest priority element, i 2,5,l (l=1,...,v) The highest priority element, i 1,9 (if reported).

[0443] - Group 2 includes i 1,7，l In The lowest priority element, i 2,4,l In The lowest priority element, i 2,5,l (l=1,...,v) The lowest priority element.

[0444] Optionally, for enhanced Type II with predicted PMI configured with N4>1, for a given first CSI report, the non-zero coefficient element i indicated by indices l, i and f 2,4,l 、i 2,5,l and i 1,7，l , and a priority value Pri(l,i,f,j)=2L·v·M v·j+2L·v·f+v·i+l association. Where l=1,...,v,i j =0,1,...,K 1，j -1, f = 0, 1, ..., M v -1, j = 0, 1. The higher the priority of the non-zero coefficient element, the lower the Pri(l, i, f, j) associated with the non-zero coefficient element. The CSI of omitted part 2 is performed according to the preset priority order, where:

[0445] - Group 0 includes i 1,1 (if reported), i 1,2 (if reported), i 1,8,l (l=1,...,v).

[0446] - Group 1 includes i 1，5 (if reported), i 1,6,l (if reported), i 1,7,l In The highest priority element, i 2,3,l 、i 2,4,l In The highest priority element, i 2，5，l (l=1,...,v) The highest priority element, i 1,10 (if reported), the second subband CQI for even subbands (if reported).

[0447] - Group 2 includes i 1,7,l In The lowest priority element, i 2,4,l In The lowest priority element, i 2,5,l (l=1,...,v) The lowest priority element, the second subband CQI for the odd subbands (if reported).

[0448] It should be noted that the content of "the priority of non-zero coefficient elements in part 2 of the first CSI report" is not limited to the above example description, but may also include the content in the current standard protocol (such as 3GPP 38.214, etc.), and does not exclude the content after subsequent standard protocol updates, and no specific restrictions are made on this.

[0449] Optionally, the priority of non-zero coefficient elements in part 2 of the first CSI report is determined by the number of spatial compression vectors.

[0450] Optionally, the priority of the non-zero coefficient elements in part 2 of the first CSI report is determined by the number of spatial compression vectors and / or the relative number / index of the spatial compression vectors. The relative number / index of the spatial compression vector may be a number / index obtained based on the spatial compression vector. For example, if the number of spatial compression vectors is 2, the relative number of the spatial compression vector may include 0, 1, or 1, 2.

[0451] For example, the non-zero coefficient element i 2,4,l 、i 2,5,l and i 1,7,l , is associated with a priority value Pri(l,i,f,j)=2·L·v·π(f)·m+2·L·v·j+v·i+l; wherein j∈{0,…,m-1}, m represents the number of spatial compression vectors, and j represents the relative number of the spatial compression vectors;

[0452] For example, the non-zero coefficient element i 2,4,l 、i 2,5,l and i 1,7,l , is associated with a priority value Pri(l,i,f)=K1·v·f·m+v·i+l; where m represents the number of spatial domain compression vectors.

[0453] For example, the non-zero coefficient element i 2,4,l 、i 2,5,l and i 1,7,l , with a priority value Association; wherein, m represents the number of spatial compression vectors, and j represents the relative number of the spatial compression vector.

[0454] For example, the non-zero coefficient element i 2，4，l 、i 2，5，l and i 1，7，l , with a priority value Association; wherein, m represents the number of spatial compression vectors, and j represents the relative number of the spatial compression vector.

[0455] For example, the non-zero coefficient element i 2，4，l 、i 2，5，l and i 1，7，l , and a priority value Pri(l,i,f,j)=2L·v·M v ·j·m+2L·v·f+v·i+l association; where m represents the number of spatial compression vectors, and j represents the relative number of the spatial compression vectors.

[0456] 4. Example of a method for determining a channel state information report

[0457]

describe

[0458] In combination with the above content, an example of a channel state information report determination method in an embodiment of the present application is introduced below. It should be noted that the method can be applied to a terminal device or a network device. Among them, the terminal device can be a chip, a chip module or a communication module, etc., and the network device can be a chip, a chip module or a communication module, etc.

[0459] like Figure 2 FIG. 1 is a flow chart of a method for determining a channel state information report according to an embodiment of the present application, which specifically includes the following steps:

[0460] S210. Determine a first CSI report, where the first CSI report includes channel-related information of one or more beams; the channel-related information of one or more beams includes at least one of the following: channel information of one or more beams, CSI information of one or more beams, and spatial domain compression-related information of one or more beams; spatial domain compression-related information of one or more beams, indicating relevant information for spatial domain compression of the channel information of one or more beams.

[0461] It should be noted that the "channel-related information of one or more beams", "channel information of one or more beams", "CSI information of one or more beams" and "spatial compression-related information of one or more beams" can be found in the above contents for details and will not be repeated here.

[0462] It can be seen that compared to the current network scenario in which the network can only perform corresponding channel estimation / network configuration / network scheduling based on the channel-related information of a single beam, in the network scenario of the present application, since the present application can report the channel-related information of multiple beams, the network can perform more accurate / reasonable channel estimation / network configuration / network scheduling based on the channel-related information of multiple beams. In this way, better communication quality can be guaranteed due to more accurate / reasonable channel estimation / network configuration / network scheduling, which is conducive to improving network stability.

[0463] In addition, compared to the current network scenario that only involves reporting of channel-related information of a single or multiple beams under NCJT, CJT or multiple TRPs, the present application can report channel-related information of one or more beams that are not NCJT, not CJT or under a single TRP, so as to improve network diversity.

[0464] At the same time, the present application may choose not to directly report the channel information of one or more beams, but to first perform spatial domain compression on the channel information of one or more beams, and then further process the information after spatial domain compression on the channel information of the one or more beams, and finally report it, so as to reduce resource occupancy and signaling overhead, etc.

[0465] Some possible implementations

[0466] In combination with the above content, some possible implementation methods are described below. For other methods not described, please refer to the above content for details, and no further elaboration will be given.

[0467] Optionally, information related to spatial compression of one or more beams, including spatial compression information and / or spatial compression vector related information;

[0468] Spatial domain compression information is information obtained by performing spatial domain compression on channel information of one or more beams;

[0469] The spatial domain compression vector related information is the related information of the spatial domain compression vector used for spatial domain compression.

[0470] Optionally, information related to the spatial compression of one or more beams is determined based on the length of the spatial compression vector.

[0471] Optionally, information related to spatial compression of one or more beams is determined based on the number of spatial compression vectors.

[0472] Optionally, information related to spatial compression of one or more beams is determined based on a window of a spatial compression vector.

[0473] Optionally, the beam number or beam index of one or more beams is indicated by the first CSI report or by the network.

[0474] Optionally, a value of a first target parameter corresponding to the priority of the first CSI report is a first preset value, or a value of the first target parameter is related to channel-related information of one or more beams;

[0475] The first target parameter is related to the type of information included in the first CSI report.

[0476] Optionally, channel-related information for one or more beams is located in part 1 or part 2 of the first CSI report.

[0477] Optionally, part 2 of the first CSI report includes group 0, group 1 and group 2, and group 0, group 1 and group 2 have different priorities.

[0478] Optionally, channel-related information of one or more beams is located in at least one of group 0, group 1, and group 2.

[0479] Optionally, the number of CSI processing unit CPUs occupied by the first CSI report is determined by the number of one or more beams or is a second preset value.

[0480] Optionally, the CSI processing time requirement of the first CSI report is determined by the second target parameter and the third target parameter.

[0481] Optionally, the CSI processing time requirement of the first CSI report is determined by CSI processing time requirement 1 and / or CSI processing time requirement 2.

[0482] Optionally, the priority of the non-zero coefficient elements in part 2 of the first CSI report is determined by the number of spatial compression vectors and / or the relative numbering of the spatial compression vectors, where the relative numbering of the spatial compression vectors is a number obtained based on the spatial compression vectors.

[0483] III. Example of a channel state information report determination device

[0484]

describe

[0485] The above mainly introduces the scheme of the embodiment of the present application from the perspective of the method side. It is understandable that in order to realize the above functions, the terminal device or network device includes a hardware structure and / or software module corresponding to each function. It should be easily appreciated by those skilled in the art that, in combination with the units and algorithm steps of each example described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present application.

[0486] The embodiment of the present application can divide the terminal device or network device into functional units according to the above method example. For example, each functional unit can be divided according to each function, or two or more functions can be integrated into one processing unit. The above integrated unit can be implemented in the form of hardware or in the form of a software program module. It should be noted that the division of units in the embodiment of the present application is schematic, which is only a logical function division, and there may be other division methods in actual implementation.

[0487] In the case of an integrated unit, Figure 3 The channel state information report determination device 300 comprises a determination unit 301 .

[0488] Optionally, the determination unit 301 may be a module unit for processing signals, data, information, etc., and there is no specific limitation on this.

[0489] Optionally, the channel state information report determining apparatus 300 may further include a storage unit, configured to store computer program codes or instructions executed by the channel state information report determining apparatus 300. The storage unit may be a memory.

[0490] Optionally, the channel state information report determination device 300 may be a chip or a chip module.

[0491] Optionally, the determination unit 301 may be integrated into other units.

[0492] For example, the determination unit 301 may be integrated in a communication unit, wherein the communication unit may be a communication interface, a transceiver, a transceiver circuit, and the like.

[0493] For another example, the determining unit 301 may be integrated into the processing unit.

[0494] It should be noted that the processing unit can be a processor or a controller, for example, a baseband processor, a baseband chip, a central processing unit (CPU), a general processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. It can implement or execute various exemplary logic blocks, modules and circuits described in conjunction with the disclosure of this application. The processing unit can also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of DSPs and microprocessors, etc.

[0495] Optionally, the channel state information report determination device 300 is used to execute any step performed by the terminal device / chip / chip module / network device, etc. in the above method embodiment.

[0496] In specific implementation, the determination unit 301 is used to execute any step in the above method embodiment, and when executing actions such as sending, other units may be selectively called to complete corresponding operations.

[0497] A determining unit 301 is configured to determine a first CSI report, where the first CSI report includes channel related information of one or more beams;

[0498] The channel-related information of one or more beams includes at least one of the following: channel information of one or more beams, CSI information of one or more beams, and spatial compression-related information of one or more beams;

[0499] The information related to the spatial domain compression of one or more beams indicates the information related to the spatial domain compression of the channel information of one or more beams.

[0500] It can be seen that compared to the current network scenario in which the network can only perform corresponding channel estimation / network configuration / network scheduling based on the channel-related information of a single beam, in the network scenario of the present application, since the present application can report the channel-related information of multiple beams, the network can perform more accurate / reasonable channel estimation / network configuration / network scheduling based on the channel-related information of multiple beams. In this way, better communication quality can be guaranteed due to more accurate / reasonable channel estimation / network configuration / network scheduling, which is conducive to improving network stability.

[0501] In addition, compared to the current network scenario that only involves reporting of channel-related information of a single or multiple beams under NCJT, CJT or multiple TRPs, the present application can report channel-related information of one or more beams that are not NCJT, not CJT or under a single TRP, so as to improve network diversity.

[0502] At the same time, the present application may choose not to directly report the channel information of one or more beams, but to first perform spatial domain compression on the channel information of one or more beams, and then further process the information after spatial domain compression on the channel information of the one or more beams, and finally report it, so as to reduce resource occupancy and signaling overhead, etc.

[0503] It should be noted that Figure 3 The specific implementation of each operation in the embodiment can be found in the description of the method embodiment shown above, and will not be described in detail here.

[0504] Some possible implementations

[0505] Some possible implementations are described below, wherein some specific descriptions can be found above, and will not be repeated here.

[0506] Optionally, information related to spatial compression of one or more beams, including spatial compression information and / or spatial compression vector related information;

[0507] Spatial domain compression information is information obtained by performing spatial domain compression on channel information of one or more beams;

[0508] The spatial domain compression vector related information is the related information of the spatial domain compression vector used for spatial domain compression.

[0509] Optionally, information related to the spatial compression of one or more beams is determined based on the length of the spatial compression vector.

[0510] Optionally, information related to spatial compression of one or more beams is determined based on the number of spatial compression vectors.

[0511] Optionally, information related to spatial compression of one or more beams is determined based on a window of a spatial compression vector.

[0512] Optionally, the beam number or beam index of one or more beams is indicated by the first CSI report or by the network.

[0513] Optionally, a value of a first target parameter corresponding to the priority of the first CSI report is a first preset value, or a value of the first target parameter is related to channel-related information of one or more beams;

[0514] The first target parameter is related to the type of information included in the first CSI report.

[0515] Optionally, channel-related information for one or more beams is located in part 1 or part 2 of the first CSI report.

[0516] Optionally, part 2 of the first CSI report includes group 0, group 1 and group 2, and group 0, group 1 and group 2 have different priorities.

[0517] Optionally, channel-related information of one or more beams is located in at least one of group 0, group 1, and group 2.

[0518] Optionally, the number of CSI processing unit CPUs occupied by the first CSI report is determined by the number of one or more beams or is a second preset value.

[0519] Optionally, the CSI processing time requirement of the first CSI report is determined by the second target parameter and the third target parameter.

[0520] Optionally, the CSI processing time requirement of the first CSI report is determined by CSI processing time requirement 1 and / or CSI processing time requirement 2.

[0521] Optionally, the priority of the non-zero coefficient elements in part 2 of the first CSI report is determined by the number of spatial compression vectors and / or the relative number / index of the spatial compression vectors, where the relative number / index of the spatial compression vectors is a number obtained based on the spatial compression vectors.

[0522] IV. Example of a terminal device

[0523] See also Figure 4, Figure 4 4 is a schematic diagram of a terminal device according to an embodiment of the present application. The terminal device 400 may include a processor 410 , a memory 420 , and a communication bus for connecting the processor 410 and the memory 420 .

[0524] Optionally, the memory 420 includes but is not limited to random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM) or portable read-only memory (CD-ROM), and the memory 420 is used to store the program code executed by the terminal device 400 and the transmitted data.

[0525] Optionally, the terminal device 400 further includes a communication interface, which is used to receive and send data.

[0526] Optionally, the terminal device 400 may be the first terminal device mentioned above.

[0527] Optionally, the processor 410 may be one or more CPUs. When the processor 410 is a CPU, the CPU may be a single-core CPU or a multi-core CPU.

[0528] Optionally, the processor 410 may be a baseband chip, a chip, a CPU, a general-purpose processor, a DSP, an ASIC, an FPGA or other programmable logic device, a transistor logic device, a hardware component or any combination thereof.

[0529] In a specific implementation, the processor 410 in the terminal device 400 is used to execute the computer program or instruction 421 stored in the memory 420 to perform the following operations:

[0530] Determine a first CSI report, where the first CSI report includes channel related information of one or more beams;

[0531] The channel-related information of one or more beams includes at least one of the following: channel information of one or more beams, CSI information of one or more beams, and spatial compression-related information of one or more beams;

[0532] The information related to the spatial compression of one or more beams indicates the information related to the spatial compression of the channel information of the multiple beams.

[0533] It can be seen that compared to the current network scenario in which the network can only perform corresponding channel estimation / network configuration / network scheduling based on the channel-related information of a single beam, in the network scenario of the present application, since the present application can report the channel-related information of multiple beams, the network can perform more accurate / reasonable channel estimation / network configuration / network scheduling based on the channel-related information of multiple beams. In this way, better communication quality can be guaranteed due to more accurate / reasonable channel estimation / network configuration / network scheduling, which is conducive to improving network stability.

[0534] In addition, compared to the current network scenario that only involves reporting of channel-related information of a single beam under NCJT, CJT or multiple TRPs, the present application can report channel-related information of one or more beams that are not NCJT, not CJT or single TRP, so as to improve network diversity.

[0535] At the same time, the present application may choose not to directly report the channel information of one or more beams, but to first perform spatial domain compression on the channel information of one or more beams, and then further process the information after spatial domain compression on the channel information of the one or more beams, and finally report it, so as to reduce resource occupancy and signaling overhead, etc.

[0536] It should be noted that the specific implementation of each operation can adopt the corresponding description of the method embodiment shown above, and the terminal device 400 can be used to execute the above method embodiment of the present application, which will not be repeated here.

[0537] 5. Example of a network device

[0538] See also Figure 5 , Figure 5 5 is a schematic diagram of a network device provided in an embodiment of the present application, wherein the network device 500 includes a processor 510 , a memory 520 , and a communication bus for connecting the processor 510 and the memory 520 .

[0539] Optionally, the memory 520 includes but is not limited to RAM, ROM, EPROM or CD-ROM, and the memory 520 is used to store relevant instructions and data.

[0540] Optionally, the network device 500 further includes a communication interface for receiving and sending data.

[0541] Optionally, the processor 510 may be one or more CPUs. When the processor 510 is a CPU, the CPU may be a single-core CPU or a multi-core CPU.

[0542] Optionally, the processor 510 may be a baseband chip, a chip, a CPU, a general-purpose processor, a DSP, an ASIC, an FPGA or other programmable logic device, a transistor logic device, a hardware component or any combination thereof.

[0543] Optionally, the processor 510 in the network device 500 is used to execute the computer program or instruction 521 stored in the memory 520 to perform the following operations:

[0544] Determine a first CSI report, where the first CSI report includes channel related information of one or more beams;

[0545] The channel-related information of one or more beams includes at least one of the following: channel information of one or more beams, CSI information of one or more beams, and spatial compression-related information of one or more beams;

[0546] The information related to the spatial domain compression of one or more beams indicates the information related to the spatial domain compression of the channel information of one or more beams.

[0547] It can be seen that compared to the current network scenario in which the network can only perform corresponding channel estimation / network configuration / network scheduling based on the channel-related information of a single beam, in the network scenario of the present application, since the present application can report the channel-related information of multiple beams, the network can perform more accurate / reasonable channel estimation / network configuration / network scheduling based on the channel-related information of multiple beams. In this way, better communication quality can be guaranteed due to more accurate / reasonable channel estimation / network configuration / network scheduling, which is conducive to improving network stability.

[0548] In addition, compared to the current network scenario that only involves reporting of channel-related information of a single beam under NCJT, CJT or multiple TRPs, the present application can report channel-related information of one or more beams that are not NCJT, not CJT or single TRP, so as to improve network diversity.

[0549] At the same time, the present application may choose not to directly report the channel information of one or more beams, but to first perform spatial domain compression on the channel information of one or more beams, and then further process the information after spatial domain compression on the channel information of the one or more beams, and finally report it, so as to reduce resource occupancy and signaling overhead, etc.

[0550] It should be noted that the specific implementation of each operation can adopt the corresponding description of the method embodiment shown above, and the network device 500 can be used to execute the above method embodiment of the present application, which will not be repeated here.

[0551] 6. Other related examples

[0552] Optionally, the above method embodiment can be applied to a terminal device or in a terminal device. That is to say, the execution subject of the above method embodiment can be a terminal device, a chip, a chip module or a module, etc., and there is no specific limitation on this.

[0553] Optionally, the above method embodiment can be applied to a network device or in a network device. That is to say, the execution subject of the above method embodiment can be a network device, a chip, a chip module or a module, etc., and there is no specific limitation on this.

[0554] An embodiment of the present application also provides a chip, including a processor, a memory, and a computer program or instructions stored in the memory, wherein the processor executes the computer program or instructions to implement the steps described in the above method embodiment.

[0555] An embodiment of the present application also provides a chip module, including a transceiver component and a chip, the chip including a processor, a memory and a computer program or instructions stored in the memory, wherein the processor executes the computer program or instructions to implement the steps described in the above method embodiment.

[0556] An embodiment of the present application also provides a computer-readable storage medium storing a computer program or instructions, which implements the steps described in the above method embodiment when executed.

[0557] The embodiment of the present application also provides a computer program product, including a computer program or instructions, which implement the steps described in the above method embodiment when executed.

[0558] An embodiment of the present application also provides a communication system, including the above-mentioned terminal device and the above-mentioned network device.

[0559] It should be noted that, for the above-mentioned various embodiments, for the sake of simple description, they are all expressed as a series of action combinations. Those skilled in the art should be aware that the present application is not limited by the described order of actions, because some steps in the embodiments of the present application can be performed in other orders or simultaneously. In addition, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions, steps, modules or units involved are not necessarily required by the embodiments of the present application.

[0560] In the above embodiments, the embodiments of the present application have different focuses on the description of each embodiment. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0561] The steps of the method or algorithm described in the embodiments of the present application can be implemented in hardware or by executing software instructions by a processor. The software instructions can be composed of corresponding software modules, and the software modules can be stored in RAM, flash memory, ROM, EPROM, electrically erasable programmable read-only memory (electrically EPROM, EEPROM), registers, hard disks, mobile hard disks, read-only compact disks (CD-ROMs) or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor so that the processor can read information from the storage medium and write information to the storage medium. Of course, the storage medium can also be a component of the processor. The processor and the storage medium can be located in an ASIC. In addition, the ASIC can be located in a terminal device or a management device. Of course, the processor and the storage medium can also be present in a terminal device or a management device as discrete components.

[0562] Those skilled in the art should be aware that in one or more of the above examples, the functions described in the embodiments of the present application can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiments of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from a website site, computer, server, or data center to another website site, computer, server, or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrated. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a digital video disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0563] The modules / units included in the devices and products described in the above embodiments may be software modules / units or hardware modules / units, or may be partially software modules / units and partially hardware modules / units. For example, for the devices and products applied to or integrated in the chip, the modules / units included therein may all be implemented in the form of hardware such as circuits, or at least some of the modules / units may be implemented in the form of software programs, which run on the processor integrated inside the chip, and the remaining (if any) modules / units may be implemented in the form of hardware such as circuits; for the devices and products applied to or integrated in the chip module, the modules / units included therein may all be implemented in the form of hardware such as circuits, and different modules / units may be located in the same component (such as a chip, circuit module, etc.) or in different components of the chip module, or at least some of the modules / units may be implemented in the form of software programs. The software programs run on the processor integrated inside the chip, and the remaining (if any) modules / units may be implemented in the form of hardware such as circuits. It is implemented in the form of a software program, which runs on a processor integrated inside the chip module, and the remaining (if any) modules / units can be implemented in hardware such as circuits; for various devices and products applied to or integrated in the terminal equipment, the various modules / units contained therein can be implemented in hardware such as circuits, and different modules / units can be located in the same component (for example, chip, circuit module, etc.) or in different components in the terminal equipment, or, at least some modules / units can be implemented in the form of a software program, which runs on a processor integrated inside the terminal equipment, and the remaining (if any) modules / units can be implemented in hardware such as circuits.

[0564] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the embodiments of the present application. It should be understood that the above description is only the specific implementation method of the embodiments of the present application and is not intended to limit the protection scope of the embodiments of the present application. Any modifications, equivalent substitutions, improvements, etc. made on the basis of the technical solutions of the embodiments of the present application should be included in the protection scope of the embodiments of the present application.

Claims

1. A method for determining a channel state information report, characterized in that: include: Determine a first channel state information (CSI) report, where the first CSI report includes channel related information of one or more beams; The channel-related information of the one or more beams includes at least one of the following: channel information of the one or more beams, CSI information of the one or more beams, and spatial compression-related information of the one or more beams; The spatial domain compression related information of the one or more beams represents the related information of spatial domain compression of the channel information of the one or more beams.

2. The method according to claim 1, characterized in that The spatial compression related information of the one or more beams includes spatial compression information and / or spatial compression vector related information; The spatial domain compression information is information obtained by performing spatial domain compression on the channel information of the one or more beams; The spatial domain compression vector related information is the spatial domain compression vector related information used for spatial domain compression.

3. The method according to claim 1 or 2, characterized in that: The spatial compression related information of the one or more beams is determined according to the length of the spatial compression vector.

4. The method according to claim 1 or 2, characterized in that: The spatial compression related information of the one or more beams is determined according to the number of spatial compression vectors.

5. The method according to claim 1 or 2, characterized in that: The spatial compression related information of the one or more beams is determined according to a window of the spatial compression vector.

6. The method according to any one of claims 1 to 5, characterized in that: The beam number or beam index of the one or more beams is indicated by the first CSI report or by the network.

7. The method according to any one of claims 1 to 6, characterized in that: A value of a first target parameter corresponding to the priority of the first CSI report is a first preset value, or a value of the first target parameter is related to channel-related information of the one or more beams; The first target parameter is related to the type of information included in the first CSI report.

8. The method according to any one of claims 1 to 7, characterized in that: The channel-related information of the one or more beams is located in part 1 or part 2 of the first CSI report.

9. The method according to any one of claims 1 to 7, characterized in that: Part 2 of the first CSI report includes group 0, group 1 and group 2, and group 0, group 1 and group 2 have different priorities.

10. The method according to claim 9, characterized in that The channel-related information of the one or more beams is located in at least one of the group 0, the group 1, and the group 2.

11. The method according to any one of claims 1 to 10, characterized in that: The number of CSI processing unit CPUs occupied by the first CSI report is determined by the number of the one or more beams or is a second preset value.

12. The method according to any one of claims 1 to 11, characterized in that: The CSI processing time requirement of the first CSI report is determined by the second target parameter and the third target parameter.

13. The method according to any one of claims 1 to 11, characterized in that: The CSI processing time requirement of the first CSI report is determined by CSI processing time requirement 1 and / or CSI processing time requirement 2.

14. The method according to any one of claims 1 to 13, characterized in that: The priority of the non-zero coefficient elements in part 2 of the first CSI report is determined by the number of spatial compression vectors and / or the relative numbering of the spatial compression vectors, where the relative numbering of the spatial compression vectors is a number obtained based on the spatial compression vectors.

15. A channel state information report determination device, characterized in that: include: A determining unit, configured to determine a first channel state information CSI report, where the first CSI report includes channel related information of one or more beams; The channel-related information of the one or more beams includes at least one of the following: channel information of the one or more beams, CSI information of the one or more beams, and spatial compression-related information of the one or more beams; The spatial domain compression related information of the one or more beams represents the related information of spatial domain compression of the channel information of the one or more beams.

16. A terminal device comprising a processor, a memory and a computer program or instruction stored in the memory, characterized in that: The processor executes the computer program or instructions to implement the steps of the method according to any one of claims 1 to 14.

17. A network device comprising a processor, a memory and a computer program or instruction stored in the memory, characterized in that: The processor executes the computer program or instructions to implement the steps of the method according to any one of claims 1 to 14.

18. A chip, comprising a processor, characterized in that: The processor executes the steps of the method according to any one of claims 1 to 14.

19. A computer-readable storage medium, characterized in that: The computer stores a computer program or an instruction, and when the computer program or the instruction is executed, the steps of the method according to any one of claims 1 to 14 are performed.

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