A method and apparatus for reference signal resource determination

Abstract

The application relates to the technical field of communication, and provides a method and device for determining a reference signal resource, to solve the problem of phase discontinuity of a terminal device in receiving reference signals from different transmission points due to uplink transmission between the reference signals from the different transmission points in a CSI measurement process in a multi-point transmission mode. First, configuration information of a reference signal resource set is acquired, which is used to determine K reference signal resources, K being a positive integer; wherein at least two reference signal resources in the K reference signal resources are in different time slots, or there is an uplink symbol in a first interval of at least two reference signal resources in the K reference signal resources. Then, N reference signal resources contained in a channel measurement resource pair are determined, and the N reference signal resources are N reference signal resources in the K reference signal resources, N being a positive integer less than or equal to K and greater than 1.

Description

Technical Field

[0001] This application relates to fields such as communications, and in particular to a method and apparatus for determining reference signal resources. Background Technology

[0002] NR is based on Multiple-Input Multiple-Output (MIMO). To improve downlink performance, Release 16 introduced multi-transmission point technology, which employs non-coherent joint transmission (NCJT) mode. Specifically, multiple transmission points can simultaneously provide data transmission services to the same terminal device.

[0003] In NCJT measurements, the terminal device receives reference signals on two reference signal resources included in the same channel measurement resource pair. Joint channel estimation is then performed on the reference signals received on these two reference signal resources according to the NCJT measurement assumptions. However, when there is uplink transmission between the two reference signal resources, a phase difference will exist between the reference signals received by the terminal device on these two reference signal resources. This will lead to inaccurate channel state information (CSI) estimation results.

[0004] Therefore, how to avoid or reduce the phase discontinuity in the terminal device's reception of reference signals from different transmission points during CSI measurement in multi-transmission point scenarios is a technical problem that needs to be solved. Summary of the Invention

[0005] This application provides a method and apparatus for determining reference signal resources to solve the problem of phase discontinuity in the reception of reference signals from different transmission points during CSI measurement in a multi-point transmission mode, due to uplink transmission between reference signals from different transmission points.

[0006] Firstly, a method for determining reference signal resources is provided, applied to a terminal device or a chip within the terminal device. First, configuration information of a set of reference signal resources is obtained. This configuration information includes configuration information for K reference signal resources, used to determine the K reference signal resources, where K is a positive integer. Specifically, at least two of the K reference signal resources reside in different time slots, or at least two of the K reference signal resources have uplink symbols within a first interval. Then, N reference signal resources included in a channel measurement resource pair are determined, where the N reference signal resources are N reference signal resources among the K reference signal resources, and N is a positive integer less than or equal to K and greater than 1.

[0007] When at least two reference signal resources are in different time slots, the phase difference problem caused by uplink / downlink handover can be further avoided through other methods. Having at least two reference signal resources in different time slots offers greater flexibility in resource configuration compared to having all K reference signal resources in the same time slot. This avoids excessive restrictions on reference signal resources to address the aforementioned issues, which could lead to a degraded overall network performance.

[0008] In one possible implementation, determining the N reference signal resources included in the channel measurement resource pair includes: receiving a first signaling instruction for indicating the N reference signal resources; and / or determining the N reference signal resources among the K reference signal resources according to a pre-defined rule.

[0009] In one possible implementation, reference signals may also be received on the N reference signal resources; and / or, CSI reports associated with the N reference signal resources may be reported.

[0010] In one possible implementation, there are no uplink symbols and / or flexible symbols in the second interval of the N reference signal resources; or, there are uplink symbols in the second interval of the N reference signal resources, and no uplink transmission is performed in the uplink symbols; or, the N reference signal resources are in the same time slot, and the reference signal resource type associated with the set of reference signal resources is periodic or semi-persistent; or, the N reference signal resources are in Q time slots, where Q is a positive integer less than or equal to N, the Q time slots are consecutive time slots, and the Q time slots contain only downlink symbols and / or flexible symbols; or, the N reference signal resources are in T time slots, where T is a positive integer less than or equal to N, the T time slots are non-consecutive time slots, the T time slots contain only downlink symbols and / or flexible symbols, and the time slots between the T time slots contain only downlink symbols and / or flexible symbols; or, there are only downlink symbols and / or flexible symbols in the third interval of the N reference signal resources.

[0011] This implementation avoids phase inconsistency through configuration.

[0012] In one possible implementation, reference signals are not received on at least one of the N reference signal resources; and / or, CSI reports associated with the N reference signal resources are not reported; and / or, outdated CSI reports are reported.

[0013] Not receiving a reference signal can mean either not receiving it at all, or receiving it but not using it, or not treating it as a valid signal / information.

[0014] An outdated CSI report can be either a previously reported CSI report stored in the UE's cache or an out-of-range CSI report. An out-of-range CSI report contains a Channel Quality Indicator (CQI) of 0, as a CQI of 0 is an out-of-range value. When the network device receives this CSI report, it recognizes it as out-of-range. The main purpose of reporting outdated CSI reports is to prevent a reduction in uplink data capacity when CSI reports are transmitted along with other uplink data. The UE would then need to re-perform rate matching to ensure that uplink data is accurately mapped to the uplink resources allocated by the network device. This process increases the UE's implementation complexity and power consumption.

[0015] This implementation avoids phase inconsistencies by configuring the network-side devices to prevent uplink / downlink switching between the channel measurement resources and the N reference signal resources they contain.

[0016] In one possible implementation, the N reference signal resources are associated with the same transmission opportunity, and the symbols corresponding to the transmission opportunities include flexible symbols and / or uplink symbols; or, the N reference signal resources are in different time slots, and the reference signal resource type associated with the set of reference signal resources is periodic or semi-continuous; or, uplink symbols and / or flexible symbols exist within a second interval of the N reference signal resources; or, uplink symbols and / or flexible symbols exist within a third interval of the N reference signal resources.

[0017] In one possible implementation, the first interval refers to the time range between the end symbol of the first reference signal resource and the start symbol of the second reference signal resource, and the first reference signal resource and the second reference signal resource are associated with the same transmission opportunity, the first reference resource is the earliest of the at least two reference signal resources, and the second reference resource is the latest of the at least two reference signal resources.

[0018] In one possible implementation, the second interval refers to the time range between the end symbol of the third reference signal resource and the start symbol of the fourth reference signal resource, wherein the third reference signal resource and the fourth reference signal resource are associated with the same transmission opportunity, the third reference resource is the first of the N reference signal resources, and the fourth reference resource is the last of the N reference signal resources.

[0019] In one possible implementation, the third interval refers to the time range between the first reference signal transmission opportunity of the fifth reference signal resource and the second reference signal transmission opportunity of the sixth reference signal resource, wherein neither the first nor the second reference signal transmission opportunity is later than the CSI reference resource, and the first reference signal transmission opportunity is one or more reference signal transmission opportunities of the fifth reference signal resource that are closest to the CSI reference resource, and the second reference signal transmission opportunity is one or more reference signal transmission opportunities of the sixth reference signal resource that are closest to the CSI reference resource, wherein the fifth reference resource is a reference signal resource among the N reference signal resources, and the sixth reference resource is a reference signal resource among the N reference signal resources.

[0020] In one possible implementation, the time slot in which the first reference signal transmitter will be located and the time slot in which the second reference signal transmitter will be located are consecutive time slots.

[0021] In one possible implementation, first capability information may also be sent, which indicates that the terminal device supports the N reference signal resources in different time slots; or, the first capability information indicates that the terminal device does not support the N reference signal resources in different time slots; or, the first capability information indicates that the terminal device only supports the N reference signal resources in different time slots.

[0022] In one possible implementation, a second capability information may also be sent, which indicates that the terminal device supports the presence of uplink symbols in the second interval of the N reference signal resources; or, the second capability information indicates that the terminal device does not support the presence of uplink symbols in the second interval of the N reference signal resources; or, the second capability information indicates that the terminal device only supports the absence of uplink symbols in the second interval of the N reference signal resources.

[0023] In one possible implementation, third capability information may also be sent, which indicates that the terminal device supports the presence of uplink symbols in the third interval of the N reference signal resources; or, the third capability information indicates that the terminal device does not support the presence of uplink symbols in the third interval of the N reference signal resources; or, the third capability information indicates that the terminal device only supports the absence of uplink symbols in the third interval of the N reference signal resources.

[0024] Secondly, a communication device is provided, the device having the functions described in the first aspect and any possible implementation thereof. These functions can be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more functional modules corresponding to the above-described functions.

[0025] Thirdly, a communication device is provided, including a processor, and optionally, a memory; the processor and the memory are coupled; the memory is used to store computer programs or instructions; the processor is used to execute part or all of the computer programs or instructions in the memory, and when the part or all of the computer programs or instructions are executed, it is used to implement the functions of the terminal device in the methods of the first aspect and any possible implementation of the first aspect.

[0026] In one possible implementation, the apparatus may further include a transceiver for transmitting signals processed by the processor or receiving signals input to the processor. The transceiver may perform the transmitting or receiving actions performed by the terminal device in the first aspect and any possible implementation thereof.

[0027] Fourthly, this application provides a chip system including one or more processors (also referred to as processing circuits), wherein the processors are electrically coupled to a memory (also referred to as a storage medium); the memory may or may not be located in the chip system; the memory is used to store computer programs or instructions; the processor is used to execute part or all of the computer programs or instructions in the memory, wherein when the part or all of the computer programs or instructions are executed, they are used to implement the functions of the terminal device in the first aspect and any possible implementation of the first aspect.

[0028] In one possible implementation, the chip system may further include an input / output interface (also referred to as a communication interface) for outputting signals processed by the processor or receiving signals input to the processor. The input / output interface can perform the sending or receiving actions performed by the terminal device in the first aspect and any possible implementation thereof. Specifically, the output interface performs the sending action, and the input interface performs the receiving action.

[0029] In one possible implementation, the chip system may consist of chips or include chips and other discrete devices.

[0030] Fifthly, a computer-readable storage medium is provided for storing a computer program, the computer program including instructions for implementing the functions of the first aspect and any possible implementation thereof.

[0031] Alternatively, a computer-readable storage medium for storing a computer program, which, when executed by a computer, causes the computer to perform the method executed by the terminal device in the first aspect and any possible implementation of the first aspect described above.

[0032] In a sixth aspect, a computer program product is provided, the computer program product comprising: computer program code, which, when run on a computer, causes the computer to perform the method described in the first aspect and any possible implementation thereof, which is executed by a terminal device.

[0033] The technical effects of the second to sixth aspects mentioned above can be referred to the description in the first aspect, and the repeated parts will not be repeated. Attached Figure Description

[0034] Figure 1a This is a schematic diagram of a communication system provided in an embodiment of this application;

[0035] Figure 1b This is a schematic diagram of a multi-TRP transmission provided in an embodiment of this application;

[0036] Figure 1c This is a schematic diagram of a multi-TRP transmission provided in an embodiment of this application;

[0037] Figure 2 This is a flowchart of a method for determining reference signal resources provided in an embodiment of this application;

[0038] Figure 3 This is a schematic diagram illustrating the transmission opportunity of a periodic / semi-persistent reference signal resource provided in an embodiment of this application;

[0039] Figure 4 This is a schematic diagram of multiple reference signal resources within the same set of reference signal resources provided in an embodiment of this application;

[0040] Figure 5 This is a schematic diagram of a reference signal resource distribution provided in an embodiment of this application;

[0041] Figure 6 This is a schematic diagram of a reference signal resource distribution provided in an embodiment of this application;

[0042] Figure 7 This is a schematic diagram of a reference signal resource distribution provided in an embodiment of this application;

[0043] Figure 8 This is a schematic diagram of a reference signal resource distribution provided in an embodiment of this application;

[0044] Figure 9 This is a schematic diagram of a reference signal resource distribution provided in an embodiment of this application;

[0045] Figure 10 This is a schematic diagram of a reference signal resource distribution provided in an embodiment of this application;

[0046] Figure 11 This is a structural diagram of a communication device provided in an embodiment of this application;

[0047] Figure 12 This is a structural diagram of a communication device provided in an embodiment of this application. Detailed Implementation

[0048] To facilitate understanding of the technical solutions in the embodiments of this application, the system architecture of the methods provided in the embodiments of this application will be briefly described below. It is understood that the system architecture described in the embodiments of this application is for the purpose of more clearly illustrating the technical solutions in the embodiments of this application and does not constitute a limitation on the technical solutions provided in the embodiments of this application.

[0049] The technical solutions of this application embodiment can be applied to various communication systems, such as satellite communication systems and traditional mobile communication systems. The satellite communication system can be integrated with traditional mobile communication systems (i.e., terrestrial communication systems). Examples of communication systems include: wireless local area network (WLAN) communication systems, wireless fidelity (WiFi) systems, long term evolution (LTE) systems, LTE frequency division duplex (FDD) systems, LTE time division duplex (TDD) systems, 5th generation (5G) systems or new radio (NR) systems, 6th generation (6G) systems, and other future communication systems. It also supports communication systems that integrate multiple wireless technologies. For example, it can also be applied to systems that integrate non-terrestrial networks (NTN) with terrestrial mobile communication networks, such as drones, satellite communication systems, and high altitude platform station (HAPS) communication.

[0050] Figure 1a This is a schematic diagram of the architecture of the communication system 1000 used in an embodiment of this application. Figure 1a As shown, the communication system includes a wireless access network 100 and a core network 200. Optionally, the communication system 1000 may also include an Internet 300. The wireless access network 100 may include at least one wireless access network device (such as...). Figure 1a 110a and 110b in the above), may also include at least one terminal (such as Figure 1a (Referring to 120a-120j in the original text). Terminals connect wirelessly to the wireless access network (WLAN) equipment, which in turn connects to the core network via wireless or wired connections. The core network equipment and the WLAN equipment can be independent physical devices, or they can integrate the functions of the core network equipment and the logical functions of the WLAN equipment onto the same physical device. Alternatively, a single physical device can integrate some of the functions of both the core network equipment and the WLAN equipment. Terminals and WLAN equipment can be interconnected via wired or wireless connections. Figure 1a This is just an illustration; the communication system may also include other network devices, such as wireless repeaters and wireless backhaul devices. Figure 1a It is not shown in the middle.

[0051] Radio access network equipment can be a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), a next-generation NodeB (gNB) in a 5G mobile communication system, a next-generation base station in a 6G mobile communication system, a base station in a future mobile communication system, or an access node in a WiFi system; it can also be a module or unit that performs some of the functions of a base station, for example, it can be a central unit (CU) or a distributed unit (DU). Radio access network equipment can be a macro base station (such as... Figure 1a 110a in the text), can also be a micro base station or an indoor station (such as... Figure 1a 110b) in the above can also be a relay node or a donor node, etc. It is understood that all or part of the functions of the wireless access network device in this application can also be implemented through software functions running on hardware, or through virtualization functions instantiated on a platform (e.g., a cloud platform). The embodiments of this application do not limit the specific technology or specific device form used in the wireless access network device. For ease of description, a base station is used as an example of a wireless access network device in the following description.

[0052] A terminal can also be called a terminal device, user equipment (UE), mobile station, mobile terminal, etc. Terminals can be widely used in various scenarios, such as device-to-device (D2D), vehicle-to-everything (V2X) communication, machine-type communication (MTC), Internet of Things (IoT), virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grids, smart furniture, smart offices, smart wearables, smart transportation, smart cities, etc. Terminals can be mobile phones, tablets, computers with wireless transceiver capabilities, wearable devices, vehicles, drones, helicopters, airplanes, ships, robots, robotic arms, smart home devices, etc. The embodiments of this application do not limit the specific technologies or device forms used in the terminals.

[0053] Base stations and terminals can be fixed or mobile. They can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; and they can be deployed in the air on aircraft, balloons, and artificial satellites. The embodiments of this application do not limit the application scenarios of base stations and terminals.

[0054] The roles of base stations and terminals can be relative, for example, Figure 1a The helicopter or drone 120i can be configured as a mobile base station. For terminals 120j accessing the wireless access network 100 via 120i, terminal 120i is a base station; however, for base station 110a, 120i is a terminal, meaning that 110a and 120i communicate via a wireless air interface protocol. Of course, 110a and 120i can also communicate via a base station-to-base station interface protocol; in this case, 120i is also a base station relative to 110a. Therefore, both base stations and terminals can be collectively referred to as communication devices. Figure 1a The 110a and 110b in the text can be referred to as communication devices with base station functions. Figure 1a The 120a-120j in the text can be referred to as communication devices with terminal functions.

[0055] Communication between base stations and terminals, between base stations, and between terminals can be conducted using licensed spectrum, unlicensed spectrum, or both simultaneously. Communication can be conducted using spectrum below 6 GHz, spectrum above 6 GHz, or both simultaneously. The embodiments of this application do not limit the spectrum resources used for wireless communication.

[0056] In the embodiments of this application, the functions of the base station can be executed by modules (such as chips) within the base station, or by a control subsystem that includes base station functions. This control subsystem, including base station functions, can be a control center in the application scenarios of the aforementioned terminals, such as smart grids, industrial control, intelligent transportation, and smart cities. Similarly, the functions of the terminal can be executed by modules (such as chips or modems) within the terminal, or by a device that includes terminal functions.

[0057] In this application, the base station sends downlink signals or downlink information to the terminal, and the downlink information is carried on the downlink channel; the terminal sends uplink signals or uplink information to the base station, and the uplink information is carried on the uplink channel.

[0058] The relevant technologies involved in this application will be introduced next.

[0059] (1) Multi-TRP transmission technology.

[0060] NR is based on Multi-Input Multi-Output (MIMO). To improve downlink performance, Release 16 introduced multi-TRP transmission technology, which uses non-coherent joint transmission (NCJT) mode. Specifically, up to two TRPs can simultaneously provide data transmission services to the same UE. In terms of implementation, Release 16 currently provides two methods: Method 1 is based on multiple downlink control information (DCI), see reference... Figure 1b Method 2 is based on a single DCI approach, see reference. Figure 1c .

[0061] In mode 1, each of the two TRPs transmits one downlink control information (DCI) and schedules two physical downlink share channels (PDSCH) to be sent to the same UE, wherein one DCI schedules one PDSCH.

[0062] In mode 2, only one of the two TRPs transmits one DCI and schedules one PDSCH. However, a portion of the stream / layer (corresponding to some demodulation reference signal (DMRS) ports) of this PDSCH is transmitted by one TRP, while another portion of the stream / layer (corresponding to some DMRS ports) is transmitted by the other TRP.

[0063] (2) Channel state information (CSI) measurement and reporting.

[0064] During wireless system communication, the network side needs to pre-acquire the Channel State Information (CSI) of the downlink channels between the TRP and different UEs. This acquisition process can involve the TRP transmitting a Channel State Probe (CSI) signal (e.g., a non-zero power channel state information reference signal (NZP CSI-RS) in NR), and the UE receiving the NZP CSI-RS signal on a pre-configured channel measurement resource (CMR) for channel estimation. Additionally, the network side will further configure a set of interference measurement resources (IMRs) corresponding to the CMRs for the UEs. The UEs receive signals on these pre-configured IMRs to perform interference measurements. Based on the measurement results from the CMRs and IMRs, the CSI is calculated. This information is then fed back to the network side via the uplink channel. The network side, based on the CSI reports from each UE, performs scheduling and then sends service data to the UEs on the downlink data channel (PDSCH).

[0065] It should be noted that in the NR protocol, the network side configures CMR and IMR for the UE, and the UE performs corresponding channel estimation and interference estimation based on the signals on CMR and IMR. For the sake of simplicity, in the following section, the above process will be simplified to: the UE performs CSI measurement on CMR and IMR.

[0066] In earlier versions of NR (Release-15 and Release-16), CSI measurements were based on a single TRP (Transmission Relay Point) assumption. This meant that during CSI measurements, the UE assumed subsequent data transmissions originated from a single TRP, and the corresponding CSI result was obtained from a single CMR and its associated IMR. However, with the introduction of multi-TRP transmission modes in Release-16, the CSI measurements in Release-15 and Release-16 could no longer support the measurement requirements of multi-TRP transmission modes (i.e., the aforementioned NCJT transmission mode). Therefore, in the latest Release-17, existing CSI measurements have been enhanced to support CSI measurements based on the NCJT measurement assumption.

[0067] (3) CSI measurement resource allocation.

[0068] To support CSI measurements under the assumption of noncoherent joint transmission of NCJT measurement, NR Release-17 specifies that network devices can configure K non-zero power Channel State Information Reference Signals (NZP CSI-RS) resources for channel measurement for the UE. These resources constitute the NZP CSI-RS resource set.

[0069] The network side can further configure or indicate R (R≥1) channel measurement resource pairs (CMR pairs) in K NZP CSI-RS resources. Each CMR pair contains 2 NZP CSI-RS resources, and each NZP CSI-RS resource is associated with a different TRP.

[0070] From a configuration perspective, the two NZP CSI-RS resources corresponding to the same channel measurement resource pair are associated with two different transmission configuration indicator states (TCIstates). The TCIstate contains the quasi-co-location (QCL) information for that NZP CSI-RS resource. The UE can only receive the reference signal on the corresponding NZP CSI-RS resource based on the QCL information contained in the TCIstate. The UE performs CSI calculations on the two NZP CSI-RS resources included in each channel measurement resource pair according to the NCJT measurement assumption. Therefore, configuring R channel measurement resource pairs means there are R NCJT measurement assumptions.

[0071] For the UE, it only needs to know the QCL information and does not necessarily need to know which TRP the current NZP CSI-RS resource comes from. In other words, from the implementation perspective, the network device only needs to configure TCI states containing different QCL information for the two NZP CSI-RS resources corresponding to the same CMR pair, and the QCL information in each TCI state is associated with a different TRP.

[0072] In addition, network devices can be configured for UEs to perform CSI calculations on K NZP CSI-RS resources according to the single TRP measurement assumption, i.e., there are K single TRP measurement assumptions.

[0073] To control the complexity of CSI measurements based on the aforementioned NZP CSI-RS resource set, Release-17 further discusses this: the network side can further configure or indicate M (M≤K) NZPCSI-RS resources among these K NZP CSI-RS resources, i.e., configure or indicate M CMRs and their associated interference measurement resources (IMRs). The UE performs CSI calculations on the M CMRs and their associated IMRs according to the single TRP measurement assumption. In this case, the aforementioned NZP CSI-RS resource set contains M single TRP measurement assumptions.

[0074] The NZP CSI-RS resource set mentioned above is used for channel measurement. However, to assist network device scheduling, the UE also needs to consider interference when performing CSI measurements, i.e., interference estimation is based on IMR. In NR, the network device also configures a resource set for the UE containing multiple IMRs for interference measurement. These IMRs can be channel state information-interference measurement (CSI-IM) resources or NZP CSI-RS resources for interference measurement. In NCJT scheduling, interference mainly includes interference other than that of the TRPs involved in NCJT transmission. Therefore, in Release-17 NCJT CSI measurements, interference estimation is based solely on CSI-IM resources. That is, in the aforementioned NCJT CSI estimation, interference is assessed by configuring the channel state information-interference measurement CSI-IM resources by the network device.

[0075] NZP CSI-RS resources can be periodic, semi-persistent, or aperiodic.

[0076] For example, NZP CSI-RS resources can be periodic, with NZP CSI-RS being transmitted on periodic NZP CSI-RS resources according to a certain period.

[0077] For example, NZP CSI-RS resources can be semi-persistent. Network devices can activate or deactivate NZP CSI-RS transmission on semi-persistent NZP CSI-RS resources via downlink signaling. During the activation period, NZP CSI-RS resources are periodic; semi-persistent NZP CSI-RS resources can be understood as periodic NZP CSI-RS resources with a window added.

[0078] For example, NZP CSI-RS resources can be aperiodic, and network devices activate NZP CSI-RS by downlink signaling to send it once on the aperiodic NZP CSI-RS resource.

[0079] To match the above measurement mechanism, NR Release 17 specifies that, based on the above measurement resource configuration, the network side can configure the UE to include the following in the same CSI report:

[0080] Option 1: CSI for X single TRP measurement hypotheses and CSI for 1 NCJT measurement hypothesis; where X can be 0, 1, or 2;

[0081] Option 2: 1 CSI, which is measured under one of the assumptions of all single TRP measurement assumptions and NCJT measurement assumptions.

[0082] CSI includes one or more of the following: CSI-RS resource indicator (CRI), rank indicator (RI), channel quality indicator (CQI), precoding matrix indicator (PMI), and layer indicator (LI).

[0083] CRI indicates an NZP CSI-RS resource or channel measurement resource pair; RI indicates the rank value; CQI indicates channel quality; PMI indicates precoding matrix information; and layer indication indicates layer information. Which of these information components in CSI is based on network configuration.

[0084] (4) Shortcomings.

[0085] In Release-15 / 16, different NZP CSI-RS resources within the same NZP CSI-RS resource set can reside in the same or different time slots.

[0086] In NCJT measurements, the UE receives reference signals on two NZP CSI-RS resources included in the same channel measurement resource pair. Joint channel estimation is performed on the reference signals received on these two NZP CSI-RS resources according to the NCJT measurement assumptions. However, when the two NZP CSI-RS resources are in different time slots, and there is an uplink transmission between these two time slots, there will be a phase difference in the reference signals received by the UE on these two NZP CSI-RS resources.

[0087] For example, in actual radio frequency operations, due to hardware constraints, the UE has an initial random phase each time it initiates downlink reception. When two NZP CSI-RS resources are in different time slots, and there is uplink transmission between these two time slots, when receiving reference signals on the NZP CSI-RS resources in the later time slot, because of the previous uplink / downlink handover, the UE restarts downlink reception, resulting in a new random phase. This new random phase is usually different from the random phase on the NZP CSI-RS resources in the previous time slot.

[0088] During NCJT transmission, the reference signals on these two NZP CSI-RS resources simulate the two TRP signals within the same time slot. In other words, the random phases of the two TRP signals are identical, with no phase difference. However, the phase difference in channel estimation can cause the UE to estimate inter-flow interference based on the same channel measurement resource for the reference signals on the two included NZP CSI-RS resources, resulting in a deviation.

[0089] Assume that the channel parameters obtained on two NZP CSI-RS resources are represented by Φ1*H1 and Φ2*H2 respectively. For the terminal, this channel parameter is a single entity, and Φ and H cannot be distinguished. Here, Φ1 represents the phase on one resource, Φ2 represents the phase on the other resource, and H1 and H2 represent the physical channel parameters between the two TRPs and the UE. H1 and H2 are Nr×Nt matrices, where Nr represents the number of UE receive antenna ports. It is assumed that the two TRPs have the same number of transmit antenna ports, both denoted by Nt. Φ1 is an Nr×Nr diagonal matrix, and the elements on the diagonal are... Φ2 is also an Nr×Nr diagonal matrix, and the elements on the diagonal are Where θ a and θ b This is due to a random phase that occurs when the UE's radio frequency link is started; this phase is completely random.

[0090] Please note that in the above assumptions, since the two NZP CSI-RS resources are assumed to come from different TRPs, it is actually assumed that the number of transmit antenna ports of the two TRPs is Nt. However, in the current Release 17 discussion, to simplify UE processing, the number of ports of NZP CSI-RS resources within the same channel measurement resource set is actually limited to be the same. To obtain the inter-flow interference under the NCJT measurement assumptions, Φ1H1 and Φ2H2 can be merged into a new matrix [Φ1H1Φ2H2], which is an Nr×2Nt matrix. Its covariance matrix R can be expressed as:

[0091]

[0092] Assuming the precodes obtained based on Φ1H1 and Φ2H2 are W1 and W2, then the inter-flow interference intensity estimated according to the above formula is:

[0093]

[0094] The estimated inter-flow interference above involves a phase difference between two NZP CSI-RS resources, which leads to the introduction of a diagonal matrix:

[0095]

[0096] When estimating the Channel Quality Indicator (CQI), the UE quantifies it based on the signal-to-interference-plus-noise ratio (SINR).

[0097]

[0098] Among them I inter-layer For inter-flow interference, I inter-cell It is inter-cell interference.

[0099] After receiving the CQI from the UE, the network device selects parameters for NCJT transmission based on the CQI value, such as code rate and modulation order. However, during NCJT PDSCH transmission, the actual inter-stream interference intensity should be... The reason for the absence of the aforementioned phase difference is that in NCJT-based PDSCH transmission, the signals of the two TRPs are within the same time slot, therefore Φ1 = Φ2. The mismatch between the aforementioned CSI estimate and the actual transmission, resulting in inaccurate CSI feedback, significantly degrades the performance of NCJT transmission.

[0100] In other words, when two NZP CSI-RS resources of the same channel measurement resource pair are in different time slots, and there is uplink / downlink switching between these two time slots, the inter-stream interference estimated in the channel estimation will introduce a phase difference that does not exist in the actual NCJT transmission, thereby causing a degradation in NCJT transmission performance.

[0101] It is important to note that the above analysis used CSI estimation based on the non-coherent joint transmission (NCJT) measurement assumption. However, CSI estimation under coherent joint transmission (coherent JT) also suffers from similar problems. The difference between Coherent JT and NCJT lies in the fact that in NCJT, different data streams originate from different TRPs, while in Coherent JT, the same data stream originates from different TRPs. Furthermore, in Coherent JT, when different phase differences exist between TRPs transmitting the same data stream, in addition to affecting inter-stream interference and leading to inaccurate CQI estimation, it also causes inaccurate PMI estimation of the precoding matrix indication, making the problem more complex and severe.

[0102] In summary, the above-mentioned problems are widespread in multi-transmission point transmission modes. As long as there is uplink and downlink handover between the transmission resources where the reference signals from multiple transmission points are located, there will be random phase differences when the UE receives reference signals from multiple transmission points on these transmission resources. Based on these reference signals with random phase differences, the estimation of CSI parameters will be inaccurate.

[0103] Based on this, this application proposes several solutions to avoid inaccurate CSI parameters in multi-TRP transmissions due to phase differences caused by uplink / downlink switching between multiple (two or more) NZP CSI-RS resources of the same channel measurement resource pair.

[0104] The solution will now be described in detail with reference to the accompanying drawings. Features or contents marked with dashed lines in the drawings can be understood as optional operations or optional structures in the embodiments of this application.

[0105] The configuration in this application can be considered equivalent to an instruction.

[0106] like Figure 2 As shown, a method for determining reference signal resources is provided, including:

[0107] Step 201: The terminal device obtains the configuration information of the reference signal resource set, which includes the configuration information of K reference signal resources. The configuration information of the K reference signal resources is used to determine the K reference signal resources, where K is a positive integer.

[0108] The terminal device can determine K reference signal resources for channel measurement based on the configuration information of K reference signal resources, where K is a positive integer. For example, the configuration information of one reference signal resource can be used to determine one reference signal resource.

[0109] The configuration information of the reference signal resource set can configure one or at least two reference signal resources to reside in different time slots. Alternatively, the configuration information of the reference signal resource set can configure at least two reference signal resources to have uplink symbols within their first intervals.

[0110] In one alternative example, the K reference signal resources are located in the same time slot, which can solve the phase difference problem caused by uplink / downlink switching. However, since too many reference signal resources are concentrated in the same time slot, the number of configurable reference signal resources will be limited, resulting in a decrease in the overall network performance.

[0111] In one optional example, at least two of the K reference signal resources reside in different time slots. When at least two reference signal resources are in different time slots, the phase difference issue caused by uplink / downlink handover can be further avoided through other methods. Having at least two of the K reference signal resources in different time slots provides greater flexibility in configuring the reference signal resources compared to having them in the same time slot. This avoids excessive restrictions on the reference signal resources to address the aforementioned problems, which could lead to a degraded overall network performance.

[0112] In one alternative example, at least two of the K reference signal resources contain uplink symbols within their first intervals.

[0113] The following is an example of how a terminal device obtains configuration information about a set of reference signal resources:

[0114] In one example, the terminal device receives configuration information of a set of reference signal resources, which includes configuration information of K reference signal resources, sent by the network device.

[0115] In one example, the terminal device receives a signaling message (which can also be called CSI configuration information). The CSI configuration information indicates (associates) the configuration information of a set of reference signal resources, which includes the configuration information of K reference signal resources. This can be understood as the CSI configuration information instructing the terminal device to use certain previously configured sets of reference signal resources as the set of reference signal resources to be acquired in step 201.

[0116] For example, the configuration information of the reference signal resource set contains the configuration information of K' reference signal resources. The UE can determine K' reference signal resources for channel measurement based on the configuration information of K' reference signal resources, where K' is a positive integer greater than or equal to K.

[0117] The aforementioned K reference signal resources are K reference signal resources determined from K' reference signal resources by signaling (which may also be called CSI configuration information), or K reference signal resources are K reference signal resources determined from K' reference signal resources according to pre-defined rules.

[0118] For example, in NR, CSI configuration information is sent via RRC signaling, such as RRC signaling CSI-MeasConfig, or CSI configuration information is RRC signaling CSI-ReportConfig.

[0119] For example, the CSI configuration information is CSI-MeasConfig, which contains CSI report configuration information, and the CSI report configuration information contains CSI-ResourceConfigId. The CSI-ResourceConfig corresponding to CSI-ResourceConfigId can identify one or more sets of reference signal resources.

[0120] For example, when the reference signal resource type determined by CSI-ResourceConfig is periodic or semi-continuous, the number of reference signal resource sets determined by CSI-ResourceConfig is 1.

[0121] For example, when the reference signal resource type determined by CSI-ResourceConfig is aperiodic, the number of reference signal resource sets determined by CSI-ResourceConfig is multiple.

[0122] When the reference signal resource type associated with the reference signal resource set is periodic or semi-continuous, the reference signal resource configuration information can configure the period and slot offset of the reference signal resource. For example, the reference signal resource configuration information includes the parameter periodicityAndOffset, which is used to configure the period and slot offset of the reference signal resource. Based on the period and slot offset, the slot in which each transmission opportunity of the reference signal resource is located can be determined. Specifically, the UE assumes that the reference signal is in slot numbered... Launched from above, among which Satisfy the following formula:

[0123]

[0124] in, The values ​​are determined by Table 1 below, where μ is used to determine the subcarrier spacing and is configured by the network device; n f T represents the frame number. offset and T CSI-RS It refers to the time slot offset and period configured in the network device.

[0125] Table 1

[0126]

[0127]

[0128] RRC signaling is usually carried by PDSCH. Upon receiving the PDSCH, the UE needs to perform reception decoding. After decoding, it needs to perform corresponding configurations based on the signaling content. This process takes a certain amount of time. Only after completing the above operations can the UE perform the corresponding actions according to the RRC signaling, and the RRC signaling officially takes effect. After the RRC signaling configured on the network side takes effect, according to the formula (1) introduced above, the UE assumes that every T... CSI-RS There will be one opportunity to transmit a reference signal in each time slot. For example... Figure 3 As shown, reference signal resource 0 and reference signal resource 1 belong to the same channel measurement resource pair, and reference signal resource 0 and reference signal resource 1 have the same period, which is 10 time slots, i.e., T. CSI-RS =10. The time slot offset of reference signal resource 0 is 2, i.e., T offset =2; the time slot offset of reference signal resource 1 is 5, i.e., T offset =5. The reference signal is transmitted in the nth period of reference signal resource 0. The reference signal resource 0 in the nth period mentioned here can be the nth transmission opportunity of reference signal 1. Similarly, the reference signal is transmitted in the (n+1)th period of reference signal resource 1. The reference signal resource 1 in the (n+1)th period mentioned here can be the (n+1)th transmission opportunity of reference signal 2.

[0129] When the reference signal resource type associated with the reference signal resource set is aperiodic, the reference signal has only one transmission opportunity on each reference signal resource, and multiple reference signal resources within the same reference signal resource set are located in the same time slot.

[0130] This application defines multiple reference signal resource intervals, the first of which is the first in the time domain, and the last of which is the last in the time domain, as described below. The end symbol can be either the start time or the end time of the end symbol. The start symbol can be either the start time or the end time of the start symbol.

[0131] For example, in the same transmission opportunity of multiple reference signal resources within the same set of reference signal resources, the time range between the end symbol of the first reference signal resource and the start symbol of the last reference signal resource is defined as: an interval of multiple reference signal resources within the same set of reference signal resources in the same transmission opportunity. Figure 4As shown, the time range between the end time of the end symbol of the first reference signal resource and the start time of the start symbol of the last reference signal resource in the same transmission opportunity of multiple reference signal resources in the same reference signal resource set is defined as: an interval of multiple reference signal resources in the same reference signal resource set in the same transmission opportunity.

[0132] For example, in the same transmission opportunity of multiple reference signal resources within the same set of reference signal resources, the time range between the start symbol of the first reference signal resource and the end symbol of the last reference signal resource is defined as: an interval of multiple reference signal resources within the same set of reference signal resources in the same transmission opportunity.

[0133] For example, in the same transmission opportunity of multiple reference signal resources within the same set of reference signal resources, the time range between the start symbol of the first reference signal resource and the start symbol of the last reference signal resource is defined as: an interval of multiple reference signal resources within the same set of reference signal resources in the same transmission opportunity.

[0134] For example, in the same transmission opportunity of multiple reference signal resources within the same set of reference signal resources, the time range between the end symbol of the first reference signal resource and the end symbol of the last reference signal resource is defined as: an interval of multiple reference signal resources within the same set of reference signal resources in the same transmission opportunity.

[0135] The first interval mentioned in this application refers to the interval of at least two of the K reference signal resources. The second interval refers to the interval of the N reference signal resources.

[0136] For example, the first interval refers to the time range between the end symbol of the first reference signal resource and the start symbol of the second reference signal resource, and the first reference signal resource and the second reference signal resource are associated with the same transmission opportunity. The first reference resource is the first reference signal resource among the at least two reference signal resources, and the second reference resource is the last reference signal resource among the at least two reference signal resources.

[0137] For example, the second interval refers to the time range between the end symbol of the third reference signal resource and the start symbol of the fourth reference signal resource, and the third reference signal resource and the fourth reference signal resource are associated with the same transmission opportunity. The third reference resource is the first reference signal resource among the N reference signal resources, and the fourth reference resource is the last reference signal resource among the N reference signal resources.

[0138] The third interval refers to the time range between the first reference signal transmission opportunity of the fifth reference signal resource and the second reference signal transmission opportunity of the sixth reference signal resource. Neither the first nor the second reference signal transmission opportunity is later than the CSI reference resource. The first reference signal transmission opportunity is one or more reference signal transmission opportunities of the fifth reference signal resource that are closest to the CSI reference resource. The second reference signal transmission opportunity is one or more reference signal transmission opportunities of the sixth reference signal resource that are closest to the CSI reference resource. The fifth reference resource is a reference signal resource among the N reference signal resources, and the sixth reference resource is a reference signal resource among the N reference signal resources.

[0139] Optionally, the time slot in which the first reference signal transmitter will be located and the time slot in which the second reference signal transmitter will be located are consecutive time slots.

[0140] Step 202: The terminal device determines the N reference signal resources included in the channel measurement resource pair, and the N reference signal resources are N reference signal resources among the K reference signal resources, where N is a positive integer less than or equal to K and greater than 1.

[0141] The reference signal resource set can support one or more channel measurement resource pairs. Determining the N reference signal resources included in a channel measurement resource pair in step 202 can be understood as determining the N reference signal resources included in each of the one or more channel measurement resource pairs supported by the reference signal resource set. If multiple channel measurement resource pairs are supported, the N reference signal resources corresponding to different channel measurement resource pairs are usually different. For example, two channel measurement pairs are supported, each containing N1 and N2 reference signal resources. These N1 and N2 reference signal resources are usually different.

[0142] Optionally, the configuration information of the reference signal resource set may indicate the number P of channel measurement resource pairs supported by the reference signal resource set, where P is an integer greater than or equal to 1. Alternatively, the number P of channel measurement resource pairs supported by the reference signal resource set may be indicated by other signaling (e.g., CSI configuration information).

[0143] When determining N reference signal resources, the terminal device may receive a first signaling message, which indicates the N reference signal resources; and / or determine the N reference signal resources from the K reference signal resources according to a pre-defined rule.

[0144] The first signaling here can be included in the CSI configuration information or in the configuration information of the reference signal resource set.

[0145] Based on the CSI configuration information, or the configuration information of the reference signal resource set (e.g., the first signaling), or according to preset rules, determine the N reference signal resources included in the channel measurement resource pair from the K reference signal resources, where N is a positive integer less than or equal to K and greater than 1.

[0146] It is understood that each channel measurement resource pair contains two reference signal (e.g., NZP CSI-RS) resources, or contains more than two reference signal (e.g., NZP CSI-RS) resources. For ease of description, the following description uses the example of each channel measurement resource pair containing two reference signal (e.g., NZP CSI-RS) resources. The case where each channel measurement resource pair contains more than two reference signal (e.g., NZP CSI-RS) resources is also within the scope of protection of this application.

[0147] An example of determining a channel measurement pair containing N reference signal resources among K reference signal resources is as follows:

[0148] Example 1: Determine the channel measurement resource pair among the K reference signal resources based on the first signaling contained in the CSI configuration information or the configuration information of the reference signal resource set.

[0149] For example, the first signaling may indicate the number P of channel measurement resource pairs and P bits of length K, where K represents the number of reference signal resources included in the reference signal resource set. A 0 in the bitmap indicates that the corresponding reference signal resource can be used as a reference signal resource corresponding to a measurement resource, and a 1 indicates that the corresponding reference signal resource cannot be used as a reference signal resource corresponding to a measurement resource. Alternatively, a 0 in the bitmap indicates that the corresponding reference signal resource cannot be used as a reference signal resource corresponding to a measurement resource, and a 1 indicates that the corresponding reference signal resource can be used as a reference signal resource corresponding to a measurement resource.

[0150] For example, the reference signal resource set contains 4 (i.e., K=4) reference signal resources, namely {#0, #1, #2, #3}. The first signaling contains P=1 and bit map 0011. The reference signal resources corresponding to #0 and #1 form a channel measurement resource pair.

[0151] Example 2: Determine channel measurement resource pairs from K reference signal resources according to pre-defined rules.

[0152] For example, the default rule is: when the reference signal resource set contains 2 (K=2) reference signal resources, these two reference signal resources form a channel measurement resource pair. For example, if the two reference signal resources are {#0, #1}, then the reference signal resources corresponding to #0 and #1 form a channel measurement resource pair.

[0153] The default rule is that any two adjacent reference signal resources out of K resources form a channel measurement resource pair. For example, if the reference signal resource set contains 6 (K = 6) reference signal resources, {#0, #1, #2, #3, #4, #5}, then reference signal resources #0 and #1 form one channel measurement resource pair, reference signal resources #2 and #3 form another channel measurement resource pair, and reference signal resources #4 and #5 form yet another channel measurement resource pair.

[0154] Example 3: Combining Example 1 and Example 2, determine the channel measurement resource pair.

[0155] For example, based on the first signaling contained in the CSI configuration information or the configuration information of the reference signal resource set, and pre-defined rules, channel measurement resource pairs are determined among the K reference signal resources.

[0156] For example, the first signaling instruction indicates the number P of channel measurement resource pairs. The preset rule is: the first 2P reference signal resources out of K reference signal resources are combined into P channel measurement resource pairs (which can also be understood as pairwise combinations). For example, if the reference signal resource set contains 6 (K=6) reference signal resources, {#0, #1, #2, #3, #4, #5}, and the first signaling instruction indicates P=2, then reference signal resources #0 and #1 form one channel measurement resource pair, and reference signal resources #2 and #3 form another channel measurement resource pair.

[0157] The following are some ways to avoid phase inconsistency.

[0158] In methods one through six below, the terminal device can receive reference signals on the N reference signal resources and / or report CSI reports associated with the N reference signal resources. Methods one through six can be understood as avoiding phase inconsistencies through configuration. In each method, one channel measurement resource pair is associated with one CSI report.

[0159] It is important to note that when the CSI reporting type is configured as Option 2 (i.e., Option 2 described above: 1 CSI, which is measured under one of the single TRP measurement assumptions and NCJT measurement assumptions), the UE should determine one CSI from the single TRP measurement assumption and NCJT measurement assumption and report this CSI to the network device. Therefore, the CSI included in the final CSI report is not necessarily based on the N reference signal resources included in the channel measurement resource pair, but may be associated with one reference signal resource from the K reference signal resources or a subset of the K reference signal resources, i.e., a CSI under a single TRP measurement assumption. However, the above CSI is determined by comparing multiple CSIs measured under all measurement assumptions, i.e., under the K reference signal resources or a subset of the K reference signal resources, and the determined channel measurement resource pair. Therefore, the above CSI report should also be understood as being associated with the N reference signal resources included in the channel measurement resource pair.

[0160] Method 1:

[0161] There are no uplink symbols (U) and / or no flexible symbols (F) in the second interval of the N reference signal resources.

[0162] A channel measurement resource pair contains N reference signal resources that can be in different time slots or in the same time slot.

[0163] Figure 5 As shown, N=2, reference signal resource 0 and reference signal resource 1 are in the same time slot, corresponding to symbols i+1 and i+3 respectively. There are only downlink symbols (D) in the intervals of i+1 and i+3, and there are no uplink symbols (U) or flexible symbols (F).

[0164] If at least two of the K reference signal resources do not contain uplink symbols within their intervals, then during the current transmission opportunity (the transmission opportunity that exists within the interval where the two reference signal resources do not contain uplink symbols), the UE receives reference signals on the N reference signal resources included in the channel measurement resource pair and reports the CSI report associated with these N reference signal resources.

[0165] For example, K = 4 reference signal resources, namely {#0, #1, #2, #3}, and the channel measurement resource pair includes the {#0, #1} reference signal resources. Within the interval of the {#0, #1} reference signal resources, there are no uplink symbols and / or no flexible symbols. In this case, there is no uplink / downlink handover between the {#0, #1} reference signal resources, thus avoiding phase inconsistency issues. Simultaneously, to prevent excessive restrictions from causing difficulties in network device configuration, in this case, apart from the interval of the {#0, #1} reference signal resources, any other intervals of reference signal resources can contain uplink symbols and / or flexible symbols. For example, intervals of {#0, #2}, {#0, #3}, or {#0, #2, #3} reference signal resources can all contain uplink symbols and / or flexible symbols, which greatly improves the flexibility of network device configuration.

[0166] Method 2:

[0167] There are uplink symbols in the second interval of the N reference signal resources, and no uplink transmission is performed in the uplink symbols.

[0168] This means that the UE may only receive, or neither receive nor transmit, between symbols containing multiple reference signals (e.g., NZP CSI-RS) resources of the same channel measurement resource pair. No uplink transmission can be performed by not transmitting, using zero power, or not transmitting any valid signals / information.

[0169] If the UE does not require transmission on the aforementioned uplink symbols, there is no uplink / downlink handover between the N reference signal resources, and there will also be no phase inconsistency issues. Therefore, within the current transmission opportunity, the UE receives reference signals on the N reference signal resources included in the channel measurement resource pair and reports the CSI report associated with these N reference signal resources.

[0170] Method 3:

[0171] The N reference signal resources are in the same time slot, and the reference signal resource type associated with the reference signal resource set is periodic or semi-continuous.

[0172] This means restricting multiple (N) reference signal resources of the same channel measurement resource pair to the same time slot.

[0173] The UE receives reference signals on the N reference signal resources contained in the channel measurement resource pair and reports CSI reports associated with these N reference signal resources.

[0174] like Figure 6As shown, N=2, reference signal resource 0 and reference signal resource 1 are in the same time slot, corresponding to symbols 1 and 5 respectively. Within the intervals of symbols 1 and 5, there are only downlink symbols (D), and no uplink symbols (U) or flexible symbols (F).

[0175] For example, if K = 4 reference signal resources, namely {#0, #1, #2, #3}, and the channel measurement resource pair includes the {#0, #1} reference signal resources, and the {#0, #1} reference signal resources are in the same time slot, then the possibility of uplink / downlink handover between the {#0, #1} reference signal resources is very low, greatly alleviating the phase inconsistency problem. At the same time, to prevent excessive restrictions from causing difficulties in network device configuration, in this case, besides the {#0, #1} reference signal resources being in the same time slot, the time slots of any other reference signal resources can be the same or different. For example, the time slots of the {#0, #2} reference signal resources, or the time slots of the {#0, #3} reference signal resources, or the time slots of the {#0, #2, #3} reference signal resources, can all be the same or different, which greatly improves the flexibility of network device configuration.

[0176] Method 4:

[0177] The N reference signal resources are distributed across Q time slots, where Q is a positive integer less than or equal to N and greater than or equal to 1. When Q is greater than 1, the Q time slots are consecutive (continuous in time), and the Q time slots contain only downlink symbols and / or flexible symbols.

[0178] The Q time slots contain only downlink symbols and / or flexible symbols. For example, the Q time slots may contain only downlink symbols, i.e., all downlink symbols; or, the Q time slots may contain only downlink symbols and flexible symbols, i.e., some downlink symbols and some flexible symbols; or, the Q time slots may contain only flexible symbols, i.e., all flexible symbols.

[0179] For example, the reference signal resource type associated with the reference signal resource set is periodic or semi-continuous.

[0180] The UE receives reference signals on the N reference signal resources contained in the channel measurement resource pair and reports CSI reports associated with these N reference signal resources.

[0181] like Figure 7 As shown, N=3, reference signal resources 1 and 2 are in time slot 2, reference signal resource 3 is in time slot 3, time slots 2 and 3 are continuous and contain only downlink symbols (D).

[0182] For example, K = 4 reference signal resources, namely {#0,#1,#2,#3}. The channel measurement resource pair includes the {#1,#2,#3} reference signal resources. The {#1,#2} reference signal resources are in time slot 2, and the {#3} reference signal resources are in time slot 3. Time slots 2 and 3 are consecutive time slots, and time slots 2 and 3 contain only downlink symbols. Therefore, when the UE receives reference signals on the {#1,#2,#3} reference signal resources, there will be no phase inconsistency problem.

[0183] Method 5:

[0184] The N reference signal resources are distributed across T time slots, where T is a positive integer less than or equal to N and greater than 1. The T time slots are non-contiguous, each of the T time slots contains only downlink symbols and / or flexible symbols, and the time slots between the T time slots contain only downlink symbols and / or flexible symbols.

[0185] The T time slots contain only downlink symbols and / or flexible symbols. For example, the T time slots may contain only downlink symbols, i.e., all downlink symbols; or, the T time slots may contain only downlink symbols and flexible symbols, i.e., some downlink symbols and some flexible symbols; or, the T time slots may contain only flexible symbols, i.e., all flexible symbols.

[0186] For example, the reference signal resource type associated with the reference signal resource set is periodic or semi-continuous.

[0187] The UE receives reference signals on the N reference signal resources contained in the channel measurement resource pair and reports CSI reports associated with these N reference signal resources.

[0188] like Figure 8 As shown, N=2, reference signal resource 1 is in time slot 2, reference signal resource 2 is in time slot 4, time slots 2 and 4 contain only downlink symbols (D), and time slot 3 also contains only downlink symbols (D).

[0189] For example, K = 4 reference signal resources, namely {#0,#1,#2,#3}. The channel measurement resource pair includes reference signal resources {#1,#2}. Reference signal resource {#1} is in time slot 2, and reference signal resource {#2} is in time slot 4. Time slots 2 and 4 are discontinuous, containing only downlink symbols. Similarly, time slot 3, between time slots 2 and 4, contains only downlink symbols. Therefore, when the UE receives reference signals on reference signal resources {#1,#2}, there will be no phase inconsistency issue.

[0190] Method Six:

[0191] Only downlink symbols and / or flexible symbols exist within the third interval of the N reference signal resources.

[0192] The third interval refers to the time range between the first reference signal transmission opportunity of the fifth reference signal resource and the second reference signal transmission opportunity of the sixth reference signal resource. Neither the first nor the second reference signal transmission opportunity is later than the CSI reference resource. The first reference signal transmission opportunity is one or more reference signal transmission opportunities of the fifth reference signal resource that are closest to the CSI reference resource. The second reference signal transmission opportunity is one or more reference signal transmission opportunities of the sixth reference signal resource that are closest to the CSI reference resource. The fifth reference resource is a reference signal resource among the N reference signal resources, and the sixth reference resource is a reference signal resource among the N reference signal resources.

[0193] Optionally, the time slot in which the first reference signal transmitter will be located and the time slot in which the second reference signal transmitter will be located are consecutive time slots.

[0194] For example, among the N reference signal resources, only downlink symbols and / or flexible symbols exist between one or more reference signal transmitter opportunities of each reference signal resource.

[0195] Wherein, the one or more reference signal transmitters will be available no later than the CSI reference resource; or,

[0196] The one or more reference signal transmitters will be no later than the CSI reference resource, and the one or more reference signal transmitters will be the reference signal transmitters that are closest to the CSI reference resource.

[0197] This can be understood as follows: The UE reports a CSI report associated with the N reference signal resources contained in the channel measurement resource pair when the following conditions are met:

[0198] For each reference signal resource, if the reference signal resource is periodic, there are multiple opportunities to transmit; if the reference signal resource is non-periodic, there is only one opportunity to transmit.

[0199] For each reference signal resource, one or more transmission opportunities no later than the CSI resource can be found, as well as one or more transmission opportunities within that reference signal resource that are closest to the CSI reference resource and no later than the CSI resource.

[0200] For each reference signal resource, if there are multiple transmission opportunities, there are no uplink symbols and / or flexible symbols among these multiple transmission opportunities. Further optionally, there are virtually no uplink symbols and / or flexible symbols among all transmissions corresponding to the N reference signal resources.

[0201] For each reference signal resource, if there is one transmission opportunity, then there are no uplink symbols and / or flexible symbols among the N transmission opportunities corresponding to these N reference signal resources.

[0202] Before the uplink time slot where the aforementioned CSI reference resources are located is reported for the CSI report associated with the aforementioned N reference signal resources, the number of CSI reference resources is greater than or equal to a certain number (e.g., as described below). The minimum number of time slots in the () and ensure that the time slot containing the CSI reference resource is a valid downlink time slot.

[0203] For example, if we assume that the uplink time slot where the CSI report is submitted is time slot n, then the time slot where the CSI reference resource is located could be in time slot nn. CSI_ref .

[0204] When the CSI report is periodic or semi-persistent, and the reference signal resource set contains one reference signal resource, n CSI_ref It can be greater than or equal to The minimum value of , and makes the time slot nn CSI_ref It is an effective downlink time slot, where μ UL Used to determine the uplink subcarrier spacing. μ UL It can be 0, 1, 2, or 3.

[0205] When the CSI report is periodic or semi-continuous, and the reference signal resource set contains multiple reference signal resources, n CSI_ref It can be greater than or equal to The minimum value of , and makes the time slot nn CSI_ref It is a valid downlink time slot.

[0206] When CSI reports are aperiodic, and the downlink signaling that triggers the aperiodic reporting does not require the CSI report to be in the same time slot, n CSI_ref It can be greater than or equal to The minimum value of , and makes the time slot nn CSI_ref This refers to the effective downlink time slot. A predefined set of values ​​can be used based on different measurement types and requirements. This set of values ​​defines the shortest time required for the UE to process different types of CSI measurements. The value of Z′ belongs to this set of values, and the unit of Z′ is the number of symbols. This indicates the number of symbols contained in a time slot. This indicates rounding down to the nearest integer.

[0207] like Figure 9As shown, N=2. The channel measurement resource pair includes reference signal resource 0 and reference signal resource 1. Reference signal resource 0 is in the time slot preceding the time slot of the CSI reference resource, while reference signal resource 1 is in the same time slot as the CSI reference resource. Furthermore, there are only downlink symbols between the transmission opportunities of reference signal resource 0 and reference signal resource 1. Therefore, the UE will not experience phase inconsistency issues when receiving reference signals from reference signal resources 0 and 1. Thus, the UE receives reference signals from reference signal resources 0 and 1 and reports CSI reports associated with the N reference signal resources included in the channel measurement resource pair.

[0208] It should be noted that the definition of CSI reference resources fully considers the latency of UE processing CSI. Therefore, before the above CSI reference resources, there is no uplink symbol and / or flexible symbol between the most recent one or more transmission opportunities of the above N reference signal resources. This can ensure that, on the basis of meeting the latency requirements of UE processing CSI, the UE can at least have one set of reference signal resources without phase inconsistency issues.

[0209] Method 7 below can be understood as the configuration of network-side equipment, which causes uplink and downlink switching between the channel measurement resources and the N reference signal resources contained therein, resulting in phase inconsistency.

[0210] Method Seven:

[0211] 1) The UE may not receive reference signals on at least one of the N reference signal resources.

[0212] 2) The UE does not report CSI reports that are related to N reference signal resources, which can prevent uplink resource waste due to invalid CSI reports.

[0213] 3) The UE reports an outdated CSI report.

[0214] You can choose at least one of the three options in method seven above.

[0215] Not receiving a reference signal can mean either not receiving it at all, or receiving it but not using it, or not treating it as a valid signal / information.

[0216] The outdated CSI report here could be the last reported CSI report stored in the UE's cache, or an out-of-range CSI report. An out-of-range CSI report contains a Channel Quality Indicator (CQI) of 0, because a CQI of 0 is an out-of-range value. When the network device receives this CSI report, it will know that it is out of range. The main purpose of reporting outdated CSI reports is that when CSI reports are transmitted along with other uplink data, the failure to report CSI reports will reduce uplink data capacity. The UE needs to re-perform rate matching to ensure that uplink data is accurately mapped to the uplink resources allocated by the network device. This process increases the UE's implementation complexity and power consumption.

[0217] The following describes several scenarios regarding the configuration of N reference signal resources with phase inconsistencies:

[0218] Case 1: The reference signal resource type associated with the reference signal resource set is periodic or semi-continuous, and they are within the same transmission opportunity.

[0219] The N reference signal resources are associated with the same transmission opportunity, and the symbols corresponding to the transmission opportunities include flexible symbols and / or uplink symbols.

[0220] The symbol corresponding to any one of the N reference signal resources included in the above-mentioned determination of channel measurement resource pair is a flexible symbol.

[0221] like Figure 10 As shown, N=2. Since the reference signal resource 1 in the channel measurement resource pair corresponds to the flexible symbol (F), the UE does not need to receive the reference signal on the reference signal resource 0 and the reference signal resource 1.

[0222] Network devices configure subframe structures containing flexible symbols for UEs via higher-layer signaling. Network devices can configure the flexible symbol (F) in the subframe as an uplink symbol (U) or a downlink symbol (D) via higher-layer or physical-layer signaling. The main reason for this stipulation is that, according to existing technologies (e.g., NR Release 15 / 16), for periodic or semi-persistent reference signal resources, the UE does not receive signals when the symbol containing the reference signal resource is a flexible symbol.

[0223] If channel measurement resource pairs are received using existing technology, and one or more reference signal resources in the pair are on a flexible symbol, the UE will not receive that reference signal resource during the current reception opportunity, but will wait for the next reception opportunity. For example, reference signal resource 0 in the channel measurement resource pair is received on the downlink symbol during the first reception opportunity; reference signal resource 1 is not received on the flexible symbol during the first reception opportunity; however, if reference signal resource 1 is on the downlink symbol during the second reception opportunity, the UE will receive it. It can be seen that the symbol following the symbol where reference signal resource 1 was received in the first reception opportunity is an uplink symbol. This means that there is an uplink / downlink handover between the symbol where reference signal resource 0 was received in the first reception opportunity and the symbol where reference signal resource 1 was received in the second reception opportunity, resulting in phase inconsistency.

[0224] Case 2: The reference signal resource type associated with the reference signal resource set is periodic or semi-continuous, and the channel measurement resource pair contains N reference signal resources in different time slots.

[0225] Case 3: The channel measurement resource pair contains uplink symbols and / or flexible symbols within the second interval of the N reference signal resources.

[0226] At this point, within the current transmission opportunity, the interval of N reference signal resources includes uplink and downlink switching, which can cause phase inconsistency issues.

[0227] Case 4: There are uplink symbols and / or flexible symbols in the third interval of the N reference signal resources.

[0228] For example, among the N reference signal resources, there may be an uplink symbol and / or a flexible symbol among one or more reference signal transmitters of each reference signal resource, wherein the one or more reference signal transmitters are no later than the CSI reference resource, and the one or more reference signal transmitters are the reference signal transmitters closest to the CSI reference resource.

[0229] In one optional example, the UE reports first capability information, which indicates that the UE supports different time slots for the same channel measurement resource pair containing N reference signal resources, or that the UE does not support different time slots for the same channel measurement resource pair containing N reference signal resources, or that the UE only supports different time slots for the same channel measurement resource pair containing N reference signal resources.

[0230] If it supports N reference signal resources residing in different time slots, then the network side can configure the same channel measurement resource pair containing the N reference signal resources in different time slots. If it does not support this, then the network side can configure the same channel measurement resource pair containing the N reference signal resources in the same time slot.

[0231] In one optional example, the UE reports second capability information, which indicates that the UE supports the presence of uplink symbols and / or flexible symbols in a second interval containing N reference signal resources for the same channel measurement resource; or, the second capability information indicates that the UE does not support the presence of uplink symbols and / or flexible symbols in a second interval containing N reference signal resources for the same channel measurement resource; or the second capability information indicates that the UE only supports the absence of uplink symbols in a second interval containing N reference signal resources for the same channel measurement resource.

[0232] If supported, the network side can configure the second interval of the N reference signal resources contained in the same channel measurement resource pair to include uplink symbols and / or flexible symbols. If not supported, the network side can configure the second interval of the N reference signal resources contained in the same channel measurement resource pair to not include uplink symbols and / or flexible symbols.

[0233] In one optional example, the UE reports third capability information, which indicates that the UE supports the presence of uplink symbols and / or flexible symbols in a third interval of N reference signal resources contained in the same channel measurement resource; or, the third capability information indicates that the UE does not support the presence of uplink symbols and / or flexible symbols in a second interval of N reference signal resources contained in the same channel measurement resource; or the third capability information indicates that the UE only supports the absence of uplink symbols in a third interval of N reference signal resources contained in the same channel measurement resource.

[0234] If supported, the network side can configure the third interval of the N reference signal resources included in the same channel measurement resource pair to include uplink symbols and / or flexible symbols. If not supported, the network side can configure the third interval of the N reference signal resources included in the same channel measurement resource pair to not include uplink symbols and / or flexible symbols.

[0235] The UE reports capability information to indicate whether it supports two reference signal resources contained in the same channel measurement resource pair in different time slots; and / or to indicate whether it supports uplink symbols between two reference signal resources contained in the same channel measurement resource pair. By reporting capability information, the network device enables the terminal device to perform appropriate configuration.

[0236] The methods of the embodiments of this application have been introduced above. The apparatus of the embodiments of this application will be described below. The methods and apparatus are based on the same technical concept. Since the principles of solving the problem by the methods and apparatus are similar, the implementation of the apparatus and methods can refer to each other, and the repeated parts will not be described again.

[0237] Based on the above method examples, the embodiments of this application can divide the device into functional modules. For example, each function can be divided into its own functional modules, or two or more functions can be integrated into one module. These modules can be implemented in hardware or as software functional modules. It should be noted that the module division in the embodiments of this application is illustrative and only represents one logical functional division; other division methods may be used in actual implementation.

[0238] Based on the same technical concept as the method described above, see [link to relevant documentation]. Figure 11 A schematic diagram of a communication device 1100 is provided. The device 1100 may include a processing module 1110, and optionally, a receiving module 1120a, a transmitting module 1120b, and a storage module 1130. The processing module 1110 may be connected to the storage module 1130, the receiving module 1120a, and the transmitting module 1120b, respectively. The storage module 1130 may also be connected to the receiving module 1120a and the transmitting module 1120b.

[0239] In one example, the receiving module 1120a and the transmitting module 1120b described above can also be integrated together and defined as a transceiver module.

[0240] In one example, the device 1100 can be a terminal device, or a chip or functional unit applied in a terminal device. The device 1100 has any of the functions of the terminal device described above; for example, the device 1100 can perform the aforementioned... Figure 2 The various steps performed by the terminal device in the method.

[0241] The receiving module 1120a can perform the receiving actions performed by the terminal device in the above method embodiment.

[0242] The sending module 1120b can perform the sending action executed by the terminal device in the above method embodiment.

[0243] The processing module 1110 can execute other actions besides sending and receiving actions performed by the terminal device in the above method embodiments.

[0244] In one example, the processing module 1110 is used to obtain configuration information of a set of reference signal resources, the configuration information of the set of reference signal resources including configuration information of K reference signal resources, the configuration information of the K reference signal resources being used to determine the K reference signal resources, where K is a positive integer;

[0245] Wherein, at least two of the K reference signal resources are located in different time slots, or there is an uplink symbol in the first interval of at least two of the K reference signal resources;

[0246] The channel measurement resource pair is determined to contain N reference signal resources, and the N reference signal resources are N reference signal resources among the K reference signal resources, where N is a positive integer less than or equal to K and greater than 1.

[0247] In one example, the receiving module 1120a is configured to receive a first signaling, the first signaling being used to indicate the N reference signal resources;

[0248] In one example, the processing module 1110 is configured to determine the N reference signal resources from the K reference signal resources according to a pre-defined rule.

[0249] In one example, the transmitting module 1120b is configured to receive reference signals on the N reference signal resources; and / or report CSI reports associated with the N reference signal resources.

[0250] In one example, the storage module 1130 may store computer execution instructions for a method executed by the terminal device, so that the processing module 1110, the receiving module 1120a, and the sending module 1120b execute the method executed by the terminal device in the above example.

[0251] For example, a storage module may include one or more memories, which can be devices in one or more devices or circuits used to store programs or data. The storage module can be a register, cache, or RAM, and can be integrated with the processing module. The storage module can also be ROM or other types of static storage devices capable of storing static information and instructions, and can be independent of the processing module.

[0252] The transceiver module can be an input or output interface, pins, or circuits, etc.

[0253] As a possible product form, the device can be implemented using a general bus architecture.

[0254] like Figure 12 As shown, a schematic block diagram of a communication device 1200 is provided.

[0255] The device 1200 may include a processor 1210, and optionally, a transceiver 1220 and a memory 1230. The transceiver 1220 may be used to receive programs or instructions and transmit them to the processor 1210, or it may be used for communication interaction between the device 1200 and other communication devices, such as exchanging control signaling and / or service data. The transceiver 1220 may be a code and / or data read / write transceiver, or it may be a signal transmission transceiver between the processor and a transceiver. The processor 1210 and the memory 1230 are electrically coupled.

[0256] In one example, the device 1200 can be a terminal device or a chip applied in a terminal device. It should be understood that the device has any of the functions of the terminal device described above; for example, the device 1200 can perform the aforementioned... Figure 2 The methods described above are the various steps executed by the terminal device. For example, the memory 1230 is used to store computer programs; the processor 1210 can be used to call the computer programs or instructions stored in the memory 1230 to execute the methods executed by the terminal device in the above example, or to execute the methods executed by the terminal device in the above example through the transceiver 1220.

[0257] As one possible product form, the device can be implemented using a general-purpose processor (which can also be called a chip or chip system).

[0258] In one possible implementation, the general-purpose processor implementing the device for the terminal device includes: a processing circuit (which may also be called a processor); optionally, it further includes: an input / output interface internally connected and communicating with the processing circuit, and a storage medium (which may also be called a memory), the storage medium being used to store instructions executed by the processing circuit to execute the method executed by the terminal device in the above example.

[0259] Figure 11 The processing module 1110 can be implemented through a processing circuit.

[0260] Figure 11 The receiving module 1120a and the transmitting module 1120b can be implemented through input / output interfaces. Alternatively, the input / output interface can be divided into an input interface and an output interface, with the input interface performing the function of the receiving module and the output interface performing the function of the transmitting module.

[0261] Figure 11 The storage module 1130 can be implemented using a storage medium.

[0262] As one possible product form, the apparatus of this application embodiment can also be implemented using one or more FPGAs (Field Programmable Gate Arrays), PLDs (Programmable Logic Devices), controllers, state machines, gate logic, discrete hardware components, any other suitable circuits, or any combination of circuits capable of performing the various functions described throughout this application.

[0263] This application also provides a computer-readable storage medium storing a computer program that, when executed by a computer, enables the computer to perform the aforementioned method for determining reference signal resources. Alternatively, the computer program includes instructions for implementing the aforementioned method for determining reference signal resources.

[0264] This application also provides a computer program product, including: computer program code, which, when run on a computer, enables the computer to execute the aforementioned method for determining reference signal resources.

[0265] This application also provides a communication system, which includes a terminal and a network device that perform the above-described method for determining reference signal resources.

[0266] Furthermore, the processor mentioned in the embodiments of this application can be a central processing unit (CPU), a baseband processor, and the baseband processor and CPU can be integrated together or separate. It can also be a network processor (NP) or a combination of CPU and NP. The processor may further include hardware chips or other general-purpose processors. The aforementioned hardware chip can be an application-specific integrated circuit (ASIC), a programmable logic device (PLD), or a combination thereof. The aforementioned PLD can be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a generic array logic (GAL), and other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc., or any combination thereof. The general-purpose processor can be a microprocessor or any conventional processor.

[0267] The memory mentioned in the embodiments of this application can be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. The volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDR SDRAM), Enhanced Synchronous DRAM (ESDRAM), Synchlink DRAM (SLDRAM), and Direct Rambus RAM (DR RAM). It should be noted that the memories described in this application are intended to include, but are not limited to, these and any other suitable types of memory.

[0268] The transceiver mentioned in the embodiments of this application may include a separate transmitter and / or a separate receiver, or the transmitter and receiver may be integrated into one unit. The transceiver can operate under the instruction of a corresponding processor. Optionally, the transmitter may correspond to a transmitter in a physical device, and the receiver may correspond to a receiver in a physical device.

[0269] Those skilled in the art will recognize that the method steps and units described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the steps and components of each embodiment have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0270] In the embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the couplings or direct couplings or communication connections shown or discussed may be indirect couplings or communication connections through some interfaces, apparatuses, or units, or they may be electrical, mechanical, or other forms of connection.

[0271] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of the embodiments of this application, depending on actual needs.

[0272] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0273] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0274] In this application, "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "Multiple" in this application refers to two or more. Furthermore, it should be understood that in the description of this application, words such as "first" and "second" are used only for descriptive purposes and should not be construed as indicating or implying relative importance or order. In this application, "configuration" can be equated with "instruction".

[0275] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0276] Obviously, those skilled in the art can make various modifications and variations to the embodiments of this application without departing from the spirit and scope of the embodiments of this application. Therefore, if these modifications and variations to the embodiments of this application fall within the scope of the claims of this application and their equivalents, this application also intends to include these modifications and variations.

Claims

1. A method for determining reference signal resources, characterized in that, include Obtain configuration information for a set of reference signal resources, wherein the configuration information for the set of reference signal resources includes configuration information for K reference signal resources, and the configuration information for the K reference signal resources is used to determine the K reference signal resources, wherein K is a positive integer; The channel measurement resource pair is determined to contain N reference signal resources, wherein the N reference signal resources are N reference signal resources among the K reference signal resources, and N is a positive integer less than or equal to K and greater than 1; wherein, there are no uplink symbols and / or flexible symbols in the second interval of the N reference signal resources; or, there are uplink symbols in the second interval of the N reference signal resources, and no uplink transmission is performed in the uplink symbols.

2. The method according to claim 1, characterized in that, The determination of the channel measurement resource pair includes N reference signal resources, including: Receive a first signaling instruction, the first signaling instruction being used to indicate the N reference signal resources; and / or, The N reference signal resources are determined from the K reference signal resources according to a pre-defined rule.

3. The method according to claim 1 or 2, characterized in that, Also includes: Receive reference signals on the N reference signal resources; And / or, report the CSI report associated with the N reference signal resources.

4. The method according to claim 3, characterized in that, Also includes: The N reference signal resources are in the same time slot, and the reference signal resource type associated with the reference signal resource set is periodic or semi-continuous; or, The N reference signal resources are distributed across Q time slots, where Q is a positive integer less than or equal to N, the Q time slots are consecutive, and the Q time slots contain only downlink symbols and / or flexible symbols. or, The N reference signal resources are distributed across T time slots, where T is a positive integer less than or equal to N. The T time slots are non-contiguous, each of the T time slots contains only downlink symbols and / or flexible symbols, and the time slots between the T time slots also contain only downlink symbols and / or flexible symbols; or... Only downlink symbols and / or flexible symbols exist within the third interval of the N reference signal resources.

5. The method according to claim 1 or 2, characterized in that, No reference signal is received on at least one of the N reference signal resources; and / or, Not submitting CSI reports associated with the N reference signal resources; and / or, Submit outdated CSI reports.

6. The method according to claim 1 or 2, characterized in that, The N reference signal resources are associated with the same transmission opportunity, and the symbols corresponding to the transmission opportunities include flexible symbols and / or uplink symbols; or, The N reference signal resources are in different time slots, and the reference signal resource type associated with the set of reference signal resources is periodic or semi-continuous; or, The second interval of the N reference signal resources contains uplink symbols and / or flexible symbols; or... The third interval of the N reference signal resources contains uplink symbols and / or flexible symbols.

7. The method as described in claim 1 or 2, characterized in that, The K reference signal resources include: At least two of the K reference signal resources are located in different time slots, or there is an uplink symbol in the first interval of at least two of the K reference signal resources.

8. The method as described in claim 7, characterized in that, The first interval refers to the time range between the end symbol of the first reference signal resource and the start symbol of the second reference signal resource, and the first reference signal resource and the second reference signal resource are associated with the same transmission opportunity. The first reference signal resource is the first reference signal resource among the at least two reference signal resources, and the second reference signal resource is the last reference signal resource among the at least two reference signal resources.

9. The method as described in claim 1 or 2, characterized in that, The second interval refers to the time range between the end symbol of the third reference signal resource and the start symbol of the fourth reference signal resource, wherein the third reference signal resource and the fourth reference signal resource are associated with the same transmission opportunity, the third reference signal resource is the first reference signal resource among the N reference signal resources, and the fourth reference signal resource is the last reference signal resource among the N reference signal resources.

10. The method as described in claim 4, characterized in that, The third interval refers to the time range between the first reference signal transmission opportunity of the fifth reference signal resource and the second reference signal transmission opportunity of the sixth reference signal resource. Neither the first nor the second reference signal transmission opportunity is later than the CSI reference resource. The first reference signal transmission opportunity is one or more reference signal transmission opportunities of the fifth reference signal resource that are closest to the CSI reference resource. The second reference signal transmission opportunity is one or more reference signal transmission opportunities of the sixth reference signal resource that are closest to the CSI reference resource. The fifth reference signal resource is a reference signal resource among the N reference signal resources. The sixth reference signal resource is a reference signal resource among the N reference signal resources.

11. The method as described in claim 10, characterized in that, The time slot in which the first reference signal transmitter will be located and the time slot in which the second reference signal transmitter will be located are consecutive time slots.

12. The method as described in claim 1 or 2, characterized in that, The method further includes: Send first capability information, which is used to indicate that the terminal device supports the N reference signal resources in different time slots; or, the first capability information is used to indicate that the terminal device does not support the N reference signal resources in different time slots; or, the first capability information is used to indicate that the terminal device only supports the N reference signal resources in different time slots.

13. The method as described in claim 1 or 2, characterized in that, The method further includes: Send second capability information, which indicates that the terminal device supports the presence of uplink symbols in the second interval of the N reference signal resources; or, the second capability information indicates that the terminal device does not support the presence of uplink symbols in the second interval of the N reference signal resources; or, the second capability information indicates that the terminal device only supports the absence of uplink symbols in the second interval of the N reference signal resources.

14. The method as described in claim 1 or 2, characterized in that, The method further includes: Send third capability information, the third capability information being used to indicate that the terminal device supports the presence of uplink symbols in the third interval of the N reference signal resources; or, the third capability information being used to indicate that the terminal device does not support the presence of uplink symbols in the third interval of the N reference signal resources; or, the third capability information being used to indicate that the terminal device only supports the absence of uplink symbols in the third interval of the N reference signal resources.

15. A communication device, characterized in that, include: A functional module that implements the method as described in any one of claims 1-14.

16. A communication device, characterized in that, It includes at least one processor, the processor being configured to execute computer programs or instructions to implement the method as described in any one of claims 1-14.

17. The communication device as claimed in claim 16, characterized in that, It also includes at least one memory, to which the processor is coupled; The memory is used to store the computer program or instructions.

18. The communication device as claimed in claim 16 or 17, characterized in that, The communication device is implemented by a chip or chip system.

19. A computer-readable storage medium, characterized in that, Used to store a computer program, the computer program including instructions for implementing the method of any one of claims 1-14.

20. A computer program product, characterized in that, The computer program product includes: computer program code that, when run on a computer, causes the computer to perform the method as described in any one of claims 1-14.

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