Method for transmitting or receiving uplink reference signal, terminal and network side device

Abstract

The application discloses a kind of uplink reference signal transmission or receiving method, terminal and network side equipment, belong to communication technical field, the uplink reference signal transmission method of embodiment of the application includes: terminal receives first information, the first information is used to indicate first downlink reference signal resource set, the first downlink reference signal resource set is used to determine the transmission parameter of first uplink reference signal, the resource in the first downlink reference signal resource set belongs to second downlink reference signal resource set;The terminal sends the first uplink reference signal.

Description

Technical Field

[0001] This application belongs to the field of communication technology, specifically relating to a method for transmitting or receiving an uplink reference signal, a terminal, and a network-side device. Background Technology

[0002] In related technologies, for non-codebook based Physical Uplink Shared Channel (PUSCH) transmission, an associated Channel State Information-Reference Signal (CSI-RS) resource set is configured for each Sounding Reference Signal (SRS) resource set. All transmission parameters, such as precoding information and power control parameters, of the SRS in the SRS resource set configuration are determined based on all K CSI-RS resources in the associated CSI-RS resource set. However, using all K CSI-RS resources to determine the transmission parameters of the uplink reference signal can lead to a mismatch between the transmission parameters calculated by the terminal and the actual situation. For example, the uplink precoding information determined using all K CSI-RS resources may not match the actual receiving port on the network side, potentially causing a reduction in beamforming gain. Summary of the Invention

[0003] This application provides an information reporting or acquisition method, terminal, and network-side device, which can solve the problem that the transmission parameters calculated by the terminal do not match the actual situation due to the fact that only all downlink reference signal resources are supported to determine the transmission parameters, thus affecting the communication performance.

[0004] In a first aspect, a method for transmitting an uplink reference signal is provided, comprising: a terminal receiving first information, the first information being used to indicate a first downlink reference signal resource set, the first downlink reference signal resource set being used to determine transmission parameters of a first uplink reference signal, and resources in the first downlink reference signal resource set belonging to a second downlink reference signal resource set; and the terminal transmitting the first uplink reference signal.

[0005] Secondly, a method for receiving an uplink reference signal is provided, comprising: a network-side device sending first information, the first information indicating a first downlink reference signal resource set, the first downlink reference signal resource set indicating transmission parameters of a first uplink reference signal, and resources in the first downlink reference signal resource set belonging to a second downlink reference signal resource set; and the network-side device receiving the first uplink reference signal.

[0006] Thirdly, an uplink reference signal transmitting apparatus is provided, comprising: a receiving module for receiving first information, the first information being used to indicate a first downlink reference signal resource set, the first downlink reference signal resource set being used to determine the transmitting parameters of a first uplink reference signal, and resources in the first downlink reference signal resource set belonging to a second downlink reference signal resource set; and a transmitting module for transmitting the first uplink reference signal.

[0007] Fourthly, an uplink reference signal receiving apparatus is provided, comprising: a transmitting module for transmitting first information, the first information being used to indicate a first downlink reference signal resource set, the first downlink reference signal resource set being used to indicate transmission parameters of a first uplink reference signal, and resources in the first downlink reference signal resource set belonging to a second downlink reference signal resource set; and a receiving module for receiving the first uplink reference signal.

[0008] Fifthly, an apparatus for transmitting or receiving an uplink reference signal is provided, the apparatus being configured to perform the steps of the method described in the first aspect, or to implement the steps of the method described in the second aspect.

[0009] In a sixth aspect, a terminal is provided, the terminal including a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method as described in the first aspect.

[0010] In a seventh aspect, a terminal is provided, including a processor and a communication interface, wherein the communication interface is used to transmit first information, the first information being used to indicate a first downlink reference signal resource set, the first downlink reference signal resource set being used to indicate transmission parameters of a first uplink reference signal, and resources in the first downlink reference signal resource set belonging to a second downlink reference signal resource set; and to receive the first uplink reference signal.

[0011] Eighthly, a network-side device is provided, the network-side device including a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method as described in the second aspect.

[0012] A ninth aspect provides a network-side device, including a processor and a communication interface, wherein the communication interface is used to transmit first information, the first information being used to indicate a first downlink reference signal resource set, the first downlink reference signal resource set being used to indicate transmission parameters of a first uplink reference signal, and resources in the first downlink reference signal resource set belonging to a second downlink reference signal resource set; and a receiving module being used to receive the first uplink reference signal.

[0013] In a tenth aspect, a readable storage medium is provided, on which a program or instructions are stored, which, when executed by a processor, implement the steps of the method described in the first aspect, or implement the steps of the method described in the second aspect.

[0014] Eleventhly, a wireless communication system is provided, comprising: a terminal and a network-side device, wherein the terminal can be used to perform the steps of the method as described in the first aspect, and the network-side device can be used to perform the steps of the method as described in the second aspect.

[0015] In a twelfth aspect, a chip is provided, the chip including a processor and a communication interface coupled to the processor, the processor being configured to run a program or instructions to implement the steps of the method described in the first aspect, or to implement the steps of the method described in the second aspect.

[0016] In a thirteenth aspect, a computer program / program product is provided, which is stored in a storage medium and is executed by at least one processor to implement the steps of the method as described in the first aspect, or to implement the steps of the method as described in the second aspect.

[0017] In this embodiment, the terminal receives first information, which indicates a first downlink reference signal resource set. The first downlink reference signal resource set is used to determine the transmission parameters of a first uplink reference signal. Resources in the first downlink reference signal resource set belong to a second downlink reference signal resource set. The terminal transmits the first uplink reference signal according to the transmission parameters. In this embodiment, the terminal can use the first downlink reference signal resource set indicated by the network-side device to determine the transmission parameters, ensuring that the transmission parameters calculated by the terminal match the actual situation, thereby improving beamforming gain and enhancing the performance of the communication system. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a wireless communication system according to an embodiment of this application; Figure 2 This is a schematic flowchart of a method for transmitting an uplink reference signal according to an embodiment of this application; Figure 3This is a schematic flowchart of a method for transmitting or receiving an uplink reference signal according to an embodiment of this application; Figure 4 This is a schematic flowchart of a method for transmitting or receiving an uplink reference signal according to an embodiment of this application; Figure 5 This is a schematic diagram illustrating a specific application of the method for transmitting or receiving uplink reference signals according to embodiments of this application; Figure 6 This is a schematic flowchart of a method for transmitting or receiving an uplink reference signal according to an embodiment of this application; Figure 7 This is a schematic flowchart of a method for receiving an uplink reference signal according to an embodiment of this application; Figure 8 This is a schematic diagram of the structure of an uplink reference signal transmitting device according to an embodiment of this application; Figure 9 This is a schematic diagram of the structure of an uplink reference signal receiving device according to an embodiment of this application; Figure 10 This is a schematic diagram of the structure of a communication device according to an embodiment of this application; Figure 11 This is a schematic diagram of the terminal structure according to an embodiment of this application; Figure 12 This is a schematic diagram of the structure of a network-side device according to an embodiment of this application. Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0020] The terms "first," "second," etc., used in this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same class, not limited in number; for example, the first object can be one or more. Furthermore, "or" in this application indicates at least one of the connected objects. For example, the scope of protection for "A or B" covers at least three scenarios: Scenario 1: including A but not B; Scenario 2: including B but not A; Scenario 3: including both A and B. In addition, the terms "A and / or B," "at least one of A and B," and "at least one of A or B" also cover at least the above three scenarios. The character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0021] The term "instruction" in this application can be either a direct instruction (or explicit instruction) or an indirect instruction (or implicit instruction). A direct instruction can be understood as the sender explicitly informing the receiver of specific information, the required operation, or the requested result in the instruction sent. An indirect instruction can be understood as the receiver determining the corresponding information based on the instruction sent by the sender, or making a judgment and determining the required operation or requested result based on the judgment result.

[0022] It is worth noting that the technologies described in this application are not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), or other systems. The terms "system" and "network" in this application are often used interchangeably, and the described technologies can be used with the systems and radio technologies mentioned above, as well as with other systems and radio technologies. The following description describes New Radio (NR) systems for illustrative purposes, and the term NR is used in most of the following description; however, these technologies can also be applied to systems other than NR systems, such as 6th generation (6G) radio systems. th Generation 6G communication system.

[0023] Figure 1This diagram illustrates a block diagram of a wireless communication system applicable to embodiments of this application. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 can also be referred to as User Equipment (UE), and can be a mobile phone, tablet computer, laptop computer, notebook computer, personal digital assistant (PDA), handheld computer, netbook, ultra-mobile personal computer (UMPC), mobile internet device (MID), augmented reality (AR), virtual reality (VR) device, robot, wearable device, flight vehicle, vehicle user equipment (VUE), shipboard equipment, pedestrian user equipment (PUE), smart home devices (home appliances with wireless communication capabilities, such as refrigerators, televisions, washing machines, or furniture), game consoles, personal computers (PCs), ATMs, or self-service machines, etc. Wearable devices include: smartwatches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart chains, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. Among these, in-vehicle devices can also be referred to as in-vehicle terminals, in-vehicle controllers, in-vehicle modules, in-vehicle components, in-vehicle chips, or in-vehicle units, etc. It should be noted that the specific type of terminal 11 is not limited in this application embodiment. Network-side equipment 12 may include access network equipment or core network equipment, wherein access network equipment may also be referred to as Radio Access Network (RAN) equipment, radio access network function, or radio access network unit. Access network equipment may include base stations, Wireless Local Area Network (WLAN) access points (APs), or Wireless Fidelity (WiFi) nodes, etc.Among them, base stations can be referred to as Node B (NB), Evolved Node B (eNB), Next Generation Node B (gNB), New Radio Node B (NR Node B), Access Point, Relay Base Station (RBS), Serving Base Station (SBS), Base Transceiver Station (BTS), Radio Base Station, Radio Transceiver, Basic Service Set (BSS), Extended Service Set (ESS), Home Node B (HNB), Home Evolved Node B, Transmit / Receive Point (TRP), Non-Terrestrial Network (NTN) equipment (such as satellite or high altitude platform stations). The term "base station" can be any suitable term in the field, such as "station" or any other appropriate term in the relevant field, as long as the same technical effect is achieved. The term "base station" is not limited to specific technical terms. It should be noted that the embodiments of this application only use the base station in the NR system as an example for introduction, and do not limit the specific type of base station.

[0024] Core network equipment, also known as core network nodes, core network functions, or core network elements, includes, but is not limited to, at least one of the following: Mobility Management Entity (MME), Access and Mobility Management Function (AMF), Session Management Function (SMF), User Plane Function (UPF), Policy Control Function (PCF), Policy and Charging Rules Function (PCRF), Edge Application Server Discovery Function (EASDF), Unified Data Management (UDM), Unified Data Repository (UDR), Home Subscriber Server (HSS), Centralized network configuration (CNC), Network Repository Function (NRF), Network Exposure Function (NEF), Local NEF (L-NEF), and Binding Support. Functions include BSF, Application Function (AF), Location Management Function (LMF), Gateway Mobile Location Centre (GMLC), Network Data Analytics Function (NWDAF), and Non-Terrestrial Network (NTN) devices (such as satellite or high altitude platform stations).It should be noted that the embodiments of this application only use the core network equipment in the NR system as an example for introduction, and do not limit the specific type of core network equipment. If the name of the core network equipment mentioned in the embodiments of this application changes in subsequent protocol versions (such as 6G), it is also within the scope of protection of this application.

[0025] Optionally, the core network equipment can be implemented by one or more functional modules in a single device, or by multiple devices working together; this application does not specifically limit this. It is understood that the aforementioned functional modules can be network elements in hardware devices, software functional modules running on dedicated hardware, or virtualized functional modules instantiated on a platform (e.g., a cloud platform).

[0026] The TRP in the various embodiments of this application can also be a specific signal-associated TRP or a set of TRPs, or a TRP or a set of TRPs associated with a certain type or group of reference signals. The TRP, etc., can also be generalized to a repeater, a Timing Advance Group (TAG), a cell (such as an NTN, small cell), an Integrated Access and Backhaul (IAB), a beamforming unit, a Quasi-Co-Location (QCL) assumption, a Transmission Configuration Indicator (TCI) state, or a signal-associated transmission unit for a specific purpose. The TRP in various embodiments of this application may also correspond to a carrier, a carrier group, a Synchronization Signal and Physical Broadcast Channel (SSB) block or an SSB group, a signal / signal resource, a signal group / signal resource set, a port or a group of ports, a carrier, a carrier group, a Band Width Part (BWP) or a BWP group, a frequency resource or a frequency resource group, or a certain transmission mode. Accordingly, in various embodiments of this application, the above concepts can be interchanged.

[0027] The Sounding Reference Signal (SRS) in the various embodiments of this application refers to the reference signal sent by the terminal for network-side equipment to perform uplink channel estimation or channel measurement. In NR, it is called SRS. In the various embodiments of this application, SRS can be generalized to any uplink reference signal, uplink reference signal resource, or uplink reference signal resource set that has the above functions, in addition to referring to SRS in NR.

[0028] The Channel State Information-Reference Signal (CSI-RS) in the various embodiments of this application refers to a reference signal transmitted by network-side equipment for functions such as downlink channel estimation, channel measurement, interference measurement, synchronization, beam management, and mobility management. In NR, it is called CSI-RS, including non-zero power (NZP) CSI-RS and zero power (ZP) CSI-RS. In the various embodiments of this application, the CSI-RS, besides referring to the CSI-RS signal in NR, can also be generalized to any downlink reference signal, downlink reference signal resource, downlink reference signal resource set, or TRP that possesses the above functions. For example, it can also be extended to any one of the following reference signals: SSB, Phase Tracking Reference Signal (PTRS), Tracking Reference Signal (TRS), Positioning Reference Signals (PRS), etc. For example, CSI-RS resource sets can also be generalized to TRP groups or sets, or coherent joint receive (CJR) combinations or coherent joint transmission (CJT) combinations.

[0029] The precoding information in various embodiments of this application may include a precoding matrix or a precoding vector.

[0030] In certain scenarios, such as when there is significant obstruction between the terminal and some uplink receiving ports on the network side, or when the terminal detects that the data reception time interval of some TRPs exceeds the cyclic prefix (CP) length, or in multi-user (MU) scenarios, or when the transmission performance is poor due to obstruction, in order to avoid interference with the reception of other uplink data, the network-side equipment determines that using some receiving ports for uplink transmission will result in better performance. In order to avoid a mismatch between the transmission parameters calculated by the terminal and the actual receiving ports on the network side, which would lead to a reduction in beamforming gain, the network-side equipment can provide the terminal with a first downlink reference signal resource set for calculating the transmission parameters; for example, the aforementioned transmission parameters may include the precoding information of the first uplink reference signal, power control parameters, etc.

[0031] The following description, in conjunction with the accompanying drawings, details the method for transmitting or receiving uplink reference signals provided in this application through some embodiments and application scenarios.

[0032] like Figure 2 As shown in the figure, this application embodiment provides an uplink reference signal transmission method 200, which can be executed by a terminal. In other words, the method can be executed by software or hardware installed on the terminal, and the method includes the following steps.

[0033] S202: The terminal receives first information, the first information being used to indicate a first downlink reference signal resource set, the first downlink reference signal resource set being used to determine the transmission parameters of a first uplink reference signal, and the resources in the first downlink reference signal resource set belonging to a second downlink reference signal resource set.

[0034] S204: The terminal sends the first uplink reference signal.

[0035] In some embodiments, the first uplink reference signal may include one or more signals. The first uplink reference signal may be an SRS, and subsequent embodiments will use SRS as an example to describe the first uplink reference signal.

[0036] In some embodiments, the first downlink reference signal resource set includes, for example, a CSI-RS resource set, a CSI-RS port set, a TRP set, an SSB resource set, and an uplink receive port set. Subsequent embodiments will primarily use the CSI-RS resource set as an example to describe the first and second downlink reference signal resource sets.

[0037] The first downlink reference signal resource set and the second downlink reference signal resource set can contain one or more downlink reference signal resources; that is to say, the concept of "resource set" may not exist in the future network-side configuration, but rather several downlink reference signal resources may be configured directly, such as several CSI-RS resources.

[0038] The various embodiments of this application can be applied to non-codebook-based uplink transmission, which in NR can be represented as Non-codebook based PUSCH transmission. Non-codebook-based uplink transmission can be understood as follows: the terminal does not rely on a predefined codebook, but rather autonomously calculates precoding information and sends a first uplink reference signal based on channel estimation. This channel estimation is achieved, for example, through CSI-RS measurement and channel reciprocity. The network-side device obtains the channel state by receiving the terminal's first uplink reference signal and schedules uplink transmission resources, such as PUSCH resources.

[0039] In this embodiment of the application, in uplink transmission based on non-codebook, the terminal receives first information sent by the network-side device. The first information is used to indicate a first downlink reference signal resource set triggered by the network side. Based on the first downlink reference signal resource set, the terminal determines the transmission parameters of the first uplink reference signal. Further, the terminal transmits the first uplink reference signal according to the transmission parameters.

[0040] The resources in the first downlink reference signal resource set belong to the second downlink reference signal resource set, and the first downlink reference signal resource set can be at least one of the following: 1) One of the multiple sets of second downlink reference signal resources associated with the first uplink reference signal. For example, the network-side device directly configures multiple possible associated CSI-RS resource sets, and then dynamically triggers one of the multiple CSI-RS resource sets. The terminal determines the transmission parameters and sends the SRS based on the actually triggered CSI-RS resource set.

[0041] 2) A set of downlink reference signal resources triggered by network-side devices, which are part of one or more second downlink reference signal resource sets associated with the first uplink reference signal. For example, the network-side device configures an associated CSI-RS resource set, and then dynamically triggers part of the CSI-RS resources from this CSI-RS resource set. The terminal determines the transmission parameters and sends the SRS based on the actually triggered CSI-RS resources.

[0042] The information reporting method provided in this application embodiment involves a terminal receiving first information, which indicates a first downlink reference signal resource set. This first downlink reference signal resource set is used to determine the transmission parameters of a first uplink reference signal. Resources in the first downlink reference signal resource set belong to a second downlink reference signal resource set. The terminal transmits the first uplink reference signal according to the transmission parameters. In this application embodiment, the terminal can use the first downlink reference signal resource set indicated by the network-side device to determine the transmission parameters, ensuring that the transmission parameters calculated by the terminal match the actual situation, thereby improving beamforming gain and enhancing the performance of the communication system.

[0043] In various embodiments of this application, the first uplink reference signal may be, for example, the SRS in NR; the downlink reference signal resource in the first downlink reference signal resource set or the second downlink reference signal resource set may be, for example, the CSI-RS resource in NR, or simply CSI-RS; the path loss reference signal may be, for example, the pathlossReferenceRS in NR.

[0044] The information reporting method provided in this application supports the configuration of a first uplink reference signal including N sets of associated downlink reference signal (CSI-RS in NR) resource sets or subsets, and supports dynamically triggering or indicating M (1≤M≤N) downlink reference signal resource sets or subsets, i.e., triggering or indicating the first downlink reference signal resource set. It also supports dynamically triggering the update of the path loss reference signal. The terminal sends M sets of corresponding first uplink reference signals, such as SRS, based on the dynamically indicated M downlink reference signal resource sets and / or path loss reference signals. Specifically, the terminal can calculate the precoding information of the m-th SRS transmission based on downlink signal resource measurements in the m-th downlink signal resource set or subset, and calculate the transmission power of the m-th SRS transmission based on the path loss reference signal indication information associated with the m-th downlink signal resource set or subset.

[0045] The information reporting method provided in this application improves the flexibility of indication through dynamic indication of the network-side device, solves the problem of reduced beamforming gain caused by mismatch between the pre-encoded information of the terminal and the receiving port of the network side in non-codebook transmission, and ensures the reliability and performance gain of uplink transmission.

[0046] In some embodiments, determining the transmission parameters of the first uplink reference signal may include at least one of the following: 1) Determine the precoding information of the first uplink reference signal. For example, the terminal determines the precoding matrix, precoding vector, etc. of the first uplink reference signal based on the downlink reference signal in the first downlink reference signal resource set. In this embodiment, the precoding information is also referred to as the transmission parameters.

[0047] 2) Determine the power control parameters of the first uplink reference signal. For example, determine the associated path loss reference signal based on the first downlink reference signal resource set, and determine the transmission power of the first uplink reference signal based on the path loss reference signal.

[0048] 3) Determine the spatial relationship parameters of the first uplink reference signal. These spatial relationship parameters may include, for example, quasi-co-location (QCL) information, spatial relation information, port association information, and TCI state information.

[0049] 4) Determine the timing advance (TA) of the first uplink reference signal. For example, determine the TA of the first uplink reference signal based on the downlink reference signal in the first downlink reference signal resource set.

[0050] In this embodiment, the terminal can determine the transmission parameters of the first uplink reference signal based on the first downlink reference signal resource set, and then transmit the first uplink reference signal based on the transmission parameters.

[0051] In some embodiments, the resources in the second downlink reference signal resource set are associated with the first uplink reference signal. For example, the second downlink reference signal resource set is a downlink reference signal resource set associated with the configuration of the first uplink reference signal. The configuration of the first uplink reference signal may be, for example, an SRS-ResourceSet configuration.

[0052] In this embodiment, the network-side device can pre-configure a second downlink reference signal resource set, and then send first information to indicate the first downlink reference signal resource set through dynamic signaling indication.

[0053] In some embodiments, the second downlink reference signal resource set includes all downlink reference signal resources configured by the network-side device for the terminal.

[0054] In this embodiment, the network-side device can simultaneously indicate the configuration of the first uplink reference signal in the signaling that triggers the first downlink reference signal resource set, such as indicating the SRS-ResourceSet configuration, which is independent of the "pre-configuration-dynamic indication" case.

[0055] In some embodiments, the first downlink reference signal resource set includes a first set, which includes: a portion of resources in one or more of the second downlink reference signal resource sets; or all resources in one or more of the second downlink reference signal resource sets.

[0056] In this embodiment, the first downlink reference signal resource set can be a first set, which can include the following situations: 1) A subset of resources in a second downlink reference signal resource set configured by the network-side equipment.

[0057] 2) A set consisting of subsets of resources from multiple second downlink reference signal resource sets configured by network-side devices.

[0058] 3) One of the multiple sets of second downlink reference signal resources configured on the network side equipment.

[0059] 4) The union of multiple sets of second downlink reference signal resources configured by the network-side equipment.

[0060] 5) A subset of resources in the second downlink reference signal resource set, and the union of other second downlink reference signal resource sets.

[0061] In this embodiment, for example, the two second downlink reference signal resource sets configured by the network-side device are CSI-RS set#1 and CSI-RS set#2, wherein CSI-RS set#1 includes two downlink reference signal resources CSI-RS{#1, #2}; and CSI-RS set#2 includes one downlink reference signal resource CSI-RS{#3}.

[0062] For example, the first set may include a portion of one or more resources from the second downlink reference signal resource set, such as CSI-RS{#1} or CSI-RS{#1, #3}, etc.

[0063] For example, the first set may include all resources in one or more of the second downlink reference signal resource sets, such as CSI-RS{#1, #2, #3}.

[0064] In some embodiments, the first downlink reference signal resource set includes a plurality of first sets, the first set including: a portion of resources in one or more second downlink reference signal resource sets; or all resources in one or more second downlink reference signal resource sets.

[0065] In this embodiment, the first downlink reference signal resource set may include multiple first sets, and the first sets can be referred to the description of the previous embodiment.

[0066] In this embodiment, the first downlink reference signal resource set includes multiple first sets, which can be applied in uplink multi-stream transmission or multi-panel transmission scenarios.

[0067] In this embodiment, for example, the two second downlink reference signal resource sets configured by the network-side device are CSI-RS set#1 and CSI-RS set#2, wherein CSI-RS set#1 includes two downlink reference signal resources CSI-RS{#1, #2}; and CSI-RS set#2 includes one downlink reference signal resource CSI-RS{#3}.

[0068] In this embodiment, the two first sets can be CSI-RS{#1, #2, #3} and CSI-RS{#3}, respectively. The terminal wants to perform two-stream uplink transmission, where the first stream is associated with CSI-RS{#1, #2, #3} and the second stream is associated with CSI-RS{#3}. Here, the first stream includes all resources of CSI-RS set#1 and all resources of CSI-RS set#2; the second stream includes all resources of CSI-RS set#2.

[0069] In some embodiments, the first information may further include at least one of the following: 1) Receive indication information, the indication information being used to indicate whether the network-side device should collaboratively receive the first uplink reference signal associated with multiple first sets; wherein, the first downlink reference signal resource set includes the multiple first sets.

[0070] This example can be applied to scenarios where the first downlink reference signal resource set includes the plurality of first sets.

[0071] In this example, whether the network-side devices cooperate in receiving the first uplink reference signals associated with multiple first sets may affect the transmission power of the first uplink reference signals. For details, please refer to the description of the embodiments below.

[0072] 2) Transport layer information, which is used to indicate at least one of the following associated with the first set: transport layer index, maximum number of transport layers, rank, number of transport data streams, and transport data stream index.

[0073] In this embodiment, when uplink multi-stream transmission occurs and different streams are associated with different first sets, the terminal can provide feedback on transport layer information and reception indication information.

[0074] In this embodiment, when the first downlink reference signal resource set includes one first set, the first information may further include transport layer information; when the first downlink reference signal resource set includes multiple first sets, the first information may further include transport layer information or reception indication information.

[0075] In this embodiment, when uplink multi-stream transmission occurs and different streams are associated with different first sets, the terminal can provide feedback on transport layer information and reception indication information.

[0076] In some embodiments, before the terminal sends the first uplink reference signal, the method further includes: the terminal determining first precoding information based on the first information; and sending the first uplink reference signal based on the first precoding information; wherein the first precoding information includes: precoding information calculated based on measurements of the first downlink reference signal resource set.

[0077] In this embodiment, the terminal can calculate first precoding information for transmitting the first uplink reference signal based on measurements of the first downlink reference signal resource set; further, the terminal transmits the first uplink reference signal according to the first precoding information. Correspondingly, the network-side device receives the first uplink reference signal using the uplink receiving port corresponding to the first downlink reference signal resource set based on the first information.

[0078] In some embodiments, before the terminal transmits the first uplink reference signal, the method further includes: the terminal determining first time information based on the first information; and determining, based on the first time information, to transmit the first uplink reference signal based on first precoding information or second precoding information; wherein the first precoding information includes: precoding information calculated by measuring the first downlink reference signal resource set; and the second precoding information includes: precoding information used to transmit the second uplink reference signal, wherein the transmission time of the second uplink reference signal is earlier than the transmission time of the first uplink reference signal.

[0079] In this embodiment, the terminal can calculate first precoding information for transmitting the first uplink reference signal based on measurements of the first downlink reference signal resource set; further, the terminal transmits the first uplink reference signal according to the first precoding information. Correspondingly, the network-side device receives the first uplink reference signal using the uplink receiving port corresponding to the first downlink reference signal resource set.

[0080] In this embodiment, the terminal can transmit the first uplink reference signal based on the second precoding information used to transmit the second uplink reference signal. For example, when the time interval between the reception time of the first downlink reference signal resource set and the transmission time of the first uplink reference signal is less than a certain threshold, the terminal can transmit the first uplink reference signal based on the second precoding information. Correspondingly, the network-side device receives the first uplink reference signal using the uplink receiving port that receives the second uplink reference signal.

[0081] The second uplink reference signal can be a default uplink reference signal that is specified by the protocol, configured on the network side, or confirmed by the terminal based on a certain predefined method.

[0082] In some embodiments, the first time information is used to indicate a first minimum time interval, the first minimum time interval including at least one of the following: 1) After receiving the first downlink reference signal resource set, determine or update the time length required for the first precoder or precoding information.

[0083] In this example, updating the first precoding information can be understood as updating the second precoding information to the first precoding information after the last time unit of the first minimum time interval, for sending the first uplink reference signal.

[0084] 2) The time required to send the first uplink reference signal after receiving the first downlink reference signal resource set.

[0085] In this example, the time of receiving the first downlink reference signal resource set can be the time of receiving the last downlink reference signal resource of the first downlink reference signal resource set in the last time unit. The time of transmitting the first uplink reference signal can be the time of transmitting the first uplink reference signal in the first time unit.

[0086] The time unit in various embodiments of this application can be an OFDM symbol, a slot or subframe, a frame, or a symbol corresponding to other signal waveforms, etc.

[0087] In some embodiments, determining, based on the first time information, to transmit the first uplink reference signal based on the first precoding information or the second precoding information includes at least one of the following: 1) If the time length between the transmission time of the first uplink reference signal and the reception time of the first downlink reference signal resource set is less than the first minimum time interval, determine whether to transmit the first uplink reference signal based on the second precoding information, or determine whether to not transmit the first uplink reference signal.

[0088] In this example, when there is insufficient transmission time, the previous second pre-coded information can be used to ensure the robustness and reliability of the communication.

[0089] The transmission time of the first uplink reference signal can be the first time unit or the start boundary of the time unit in which the uplink reference signal is transmitted. Receiving the first downlink reference signal resource set can be the last time unit or the end boundary of the last downlink reference signal resource in the first downlink reference signal resource set.

[0090] 2) If the time length between the transmission time of the first uplink reference signal and the reception time of the first downlink reference signal resource set is equal to the first minimum time interval, determine whether to transmit the first uplink reference signal based on the first precoding information, or determine whether to transmit the first uplink reference signal based on the second precoding information, or determine whether to not transmit the first uplink reference signal.

[0091] In this example, the terminal can use the previously obtained second precoding information to ensure the robustness and reliability of communication; it can also use the first precoding information obtained by measuring the first downlink reference signal resource set, which is more compatible with the receiving port on the network side, thus improving beamforming gain; it can also choose not to send the first uplink reference signal to avoid uplink performance being unsatisfactory or receiving failure due to the network side not completing the receiving port change, thereby saving the UE's transmission power consumption.

[0092] 3) If the time length between the transmission time of the first uplink reference signal and the reception time of the first downlink reference signal resource set is greater than the first minimum time interval, determine that the first uplink reference signal is to be transmitted based on the first precoding information.

[0093] In this example, given sufficient transmission time, the first precoding information obtained by measuring the first downlink reference signal resource set can be used. Since the first precoding information is more compatible with the receiving port on the network side, the beamforming gain is improved.

[0094] In this embodiment, the transmission time of the first uplink reference signal can be the time of the first time unit in which the uplink reference signal is transmitted. The reception time of the first downlink reference signal resource set can be the last time unit in which the last downlink reference signal resource of the first downlink reference signal resource set is received.

[0095] In some embodiments, the terminal determines the first time information based on the first information, including at least one of the following: 1) The terminal determines the first time information from the first information, wherein the first information includes the first time information.

[0096] In this example, the first information includes the first time information. The terminal determines the first time information from the received first information. For example, the network-side device indicates that the first minimum time interval is X symbols through the first information.

[0097] 2) The terminal determines the first downlink reference signal resource set based on the first information, and determines the first time information based on the first downlink reference signal resource set and the first calculation rule.

[0098] In this example, the terminal can determine the first downlink reference signal resource set based on the first information, according to the first calculation rule predefined by the network-side device configuration or protocol, and then determine the first time information based on the first downlink reference signal resource set and the first calculation rule. For example, the protocol predefined the first minimum time interval as a function f(K) of the number of downlink reference signal resources K in the first downlink reference signal resource set. The terminal determines K=K0 based on the first information, and then determines the first minimum time interval as X=f(K0). Optionally, K or K0 may not necessarily appear directly in the formula f(.), but may be determined by K or K0 to determine the range of a certain parameter in the formula f(.). For example, the function f(.) is a function of the sub-carrier spacing (SCS), where the SCS is the minimum SCS among the K downlink reference signal resources, or the minimum SCS among the K downlink reference signal resources and the first uplink reference signal resource.

[0099] 3) The terminal determines the first downlink reference signal resource set based on the first information, and determines the first time information based on the correlation between the first downlink reference signal resource set and the first time information.

[0100] In this example, the terminal can determine the first downlink reference signal resource set based on the association between the first time information configured by the network-side device or predefined by the protocol and the first downlink reference signal resource set, and then determine the first time information. For example, the network-side device configures CSI-RS resource set#1 to be associated with a first minimum time interval X1, and CSI-RS resource set#2 to be associated with a first minimum time interval X2. Based on the first information, the terminal determines that the first downlink reference signal resource set is CSI-RS resource set#1, and then determines that the first minimum time interval is X=X1.

[0101] In some embodiments, before the terminal transmits the first uplink reference signal, the method further includes: the terminal determining the transmission power of the first uplink reference signal based on the first information.

[0102] In some embodiments, the terminal determines the transmission power of the first uplink reference signal based on the first information by including at least one of the following: 1) Determine TCI status information based on the first information, determine path loss reference signal information based on the TCI status information, and determine the transmission power of the first uplink reference signal based on the path loss reference signal information.

[0103] For example, the terminal acquires TCI status information and, based on the measurement of the path loss reference signal (pathlossReferenceRS) indicated in the TCI status information, calculates the SRS uplink path loss and the SRS transmit power. Specifically, the UE determines the downlink transmission path loss based on the pathlossReferenceRS measurement, obtains the SRS uplink path loss as the downlink transmission path loss based on channel reciprocity, and calculates the SRS transmit power.

[0104] When the pathlossReferenceRS indicated in the TCI status information includes only one path loss reference signal, the terminal calculates the SRS uplink path loss based on this path loss reference signal, and then calculates the SRS transmission power.

[0105] Alternatively, when the pathlossReferenceRS indicated in the TCI status information includes multiple path loss reference signals, the terminal uses the maximum path loss, average path loss, minimum path loss, or joint reception path loss measured by the multiple path loss reference signals as the SRS uplink path loss, and then calculates the SRS transmission power.

[0106] 2) Determine path loss reference signal information based on the first information, and determine the transmission power of the first uplink reference signal based on the path loss reference signal information.

[0107] For example, the terminal directly obtains the pathlossReferenceRS, calculates the SRS uplink path loss based on the pathlossReferenceRS measurement, and calculates the SRS transmit power. Specifically, the terminal determines the downlink transmission path loss based on the pathlossReferenceRS measurement, obtains the SRS uplink path loss as the downlink transmission path loss based on channel reciprocity, and calculates the SRS transmit power.

[0108] When the pathlossReferenceRS indicated in the TCI status information includes only one path loss reference signal, the terminal calculates the SRS uplink path loss based on this path loss reference signal, and then calculates the SRS transmission power.

[0109] Alternatively, when the pathlossReferenceRS indicated in the TCI status information includes multiple path loss reference signals, the terminal uses the maximum path loss, average path loss, minimum path loss, or joint reception path loss measured from the multiple path loss reference signals as the SRS uplink path loss, and then calculates the SRS transmission power. The joint reception path loss is determined based on the received power (denoted as joint reception power) calculated by the terminal for joint reception of downlink reference signals in the first downlink reference signal set; for example, the terminal can determine equivalent channel information based on the measurement results of each downlink reference signal in the downlink reference signal set, and the terminal can determine the received power for joint reception of downlink reference signals in the downlink reference signal set based on the equivalent channel information, and the joint reception path loss can be determined based on the joint reception power.

[0110] In some embodiments, the terminal determines the transmission power of the first uplink reference signal based on the first information by one of the following: 1) When the terminal determines, based on the first information, that the network-side devices collaboratively receive the first uplink reference signals associated with multiple first sets, the first transmission power of the first uplink reference signal is determined.

[0111] In this embodiment, the first transmission power of the first uplink reference signal associated with the plurality of first sets is the same, and the first transmission power is determined based on the measurement results of the plurality of first sets.

[0112] 2) If the terminal determines, based on the first information, that the network-side devices do not cooperate in receiving the first uplink reference signals associated with multiple first sets, the second transmission power of the first uplink reference signal is determined.

[0113] In this embodiment, the second transmit power of the first uplink reference signal associated with any first set is determined based on the measurement results of the first set associated with the first uplink reference signal.

[0114] Wherein, the first downlink reference signal resource set includes multiple first sets, and the first set includes: a portion of resources in one or more second downlink reference signal resource sets; or all resources in one or more second downlink reference signal resource sets.

[0115] In some embodiments, before the terminal sends the first uplink reference signal, the method further includes: the terminal receiving second information, the second information indicating at least one of the following: 1) One or more sets of downlink reference signal resources associated with the first uplink reference signal, i.e. one or more sets of second downlink reference signal resources associated with the first uplink reference signal.

[0116] 2) TCI status information.

[0117] 3) Path loss reference signal information; 4) Uplink reference signal resource set configuration, or configuration of the first uplink reference signal.

[0118] In this embodiment, the second information is carried by at least one of the following signaling: Radio Resource Control (RRC) signaling and Media Access Control Control Element (MAC CE) signaling.

[0119] In some embodiments, the second information indicates a plurality of downlink reference signal resource sets associated with the first uplink reference signal by at least one of the following: 1) Method 1: Indicate N uplink reference signal resource set configurations, that is, the configuration of the first uplink reference signal is N. The configuration of the first uplink reference signal can be, for example, SRS-ResourceSet in NR. Each uplink reference signal resource set configuration includes an associated downlink reference signal resource set; wherein, any two uplink reference signal resource set configurations in the N uplink reference signal resource set configurations contain different downlink reference signal resource sets, and N is an integer greater than 1, for example, N is 2, 3, 4, etc.

[0120] The network-side device indicates N (N>1) uplink reference signal resource set configurations, wherein the N uplink reference signal resource set configurations are associated with the same uplink reference signal resources, and each uplink reference signal resource set configuration includes an associated downlink reference signal resource set. Wherein, any two uplink reference signal resource set configurations contain different associated downlink reference signal resource sets.

[0121] In Method 1, the configuration of N uplink reference signal resource sets includes N second downlink reference signal resource sets.

[0122] 2) Method 2: Indicate an uplink reference signal resource set configuration, wherein the uplink reference signal resource set configuration includes N associated downlink reference signal resource sets; wherein any two downlink reference signal resource sets in the N downlink reference signal resource sets are different, and N is an integer greater than 1.

[0123] The network-side device indicates an uplink reference signal resource set configuration. The configuration of the first uplink reference signal can be, for example, an SRS-ResourceSet in NR. This uplink reference signal resource set configuration includes N associated downlink reference signal resource sets. Any two downlink reference signal resource sets among the N associated downlink reference signal resource sets are different, and N is an integer greater than 1, for example, N is 2, 3, 4, etc.

[0124] In Method 2, an uplink reference signal resource set configuration includes N second downlink reference signal resource sets.

[0125] 3) Method 2 can also be: indicating an uplink reference signal resource set configuration, wherein the uplink reference signal resource set configuration includes N1 uplink reference signal resource subsets, and each uplink reference signal resource subset is associated with a downlink reference signal resource set; wherein, in the N1 uplink reference signal resource subsets, any two uplink reference signal resource subsets are associated with different downlink reference signal resource sets, and N1 is an integer greater than 1, for example, N1 is 2, 3, 4, etc.

[0126] The network-side device indicates an uplink reference signal resource set configuration. The configuration of the first uplink reference signal can be, for example, an SRS-ResourceSet in NR. The uplink reference signal resource set configuration includes N1 uplink reference signal resource subsets, each of which is associated with a downlink reference signal resource set. Notably, any two subsets within the N1 uplink reference signal resource subsets can be associated with different downlink reference signal resource sets.

[0127] For example, an SRS-ResourceSet configuration contains N1 SRS resource subsets, each SRS resource subset is associated with a CSI-RS resource set or subset. Optionally, any two SRS resource subsets can be associated with the same or different CSI-RS resource sets or subsets. If two SRS resource subsets are associated with the same CSI-RS resource sets or subsets, then the number of SRS resource subsets N1 is greater than the number of CSI-RS resource sets or subsets N. If any two SRS resource subsets are associated with different CSI-RS resource sets or subsets, then the number of SRS resource subsets N1 is equal to the number of CSI-RS resource sets or subsets N.

[0128] In some embodiments, the second information is used to indicate a plurality of TCI status information; wherein the plurality of TCI status information satisfies at least one of the following: 1) Any one of the TCI status information is associated with a path loss reference signal or a group of path loss reference signals.

[0129] 2) Any one of the TCI status information is associated with the uplink reference signal resource set configuration, downlink reference signal resource set, or uplink reference signal resource subset in the second information.

[0130] For example, according to Method 1, the second information includes the association between the identification information (srs-ResourceSetId) of N SRS-ResourceSet configurations and N TCI status information; wherein each TCI status information is associated with a pathlossReferenceRS parameter, and the pathlossReferenceRS parameter contains one or more downlink reference signal identifiers.

[0131] For example, according to Method 2, the second information includes the association between N downlink reference signal resource sets and N TCI status information, such as the association between N associated CSI-RS resource set indices and N TCI status information; wherein each TCI status information is associated with a pathlossReferenceRS parameter, and the pathlossReferenceRS parameter contains one or more downlink reference signal identifiers.

[0132] For example, according to Method 2, the second information includes the association between N uplink reference signal resource subsets and N TCI status information, such as the association between N SRS resource subset indices and N TCI status information; wherein each TCI status information is associated with a pathlossReferenceRS parameter, and the pathlossReferenceRS parameter contains one or more downlink reference signal identifiers.

[0133] In some embodiments, the path loss reference signal information includes multiple path loss reference signals or multiple path loss reference signal groups; wherein any one of the path loss reference signals or path loss reference signal groups is associated with the uplink reference signal resource set configuration, downlink reference signal resource set, or uplink reference signal resource subset in the second information.

[0134] For example, according to Method 1, the second information includes the association between the identification information of N SRS-ResourceSet configurations and N pathlossReferenceRS parameters, wherein the pathlossReferenceRS parameters contain one or more downlink reference signal identifiers.

[0135] For example, according to Method 2, the second information includes the association between N downlink reference signal resource sets and N pathlossReferenceRS parameters, wherein the pathlossReferenceRS parameters contain one or more downlink reference signal identifiers.

[0136] For example, according to Method 2, the second information includes the association between N uplink reference signal resource subsets and N pathlossReferenceRS parameters, wherein the pathlossReferenceRS parameters contain one or more downlink reference signal identifiers.

[0137] In some embodiments, the first information includes at least one of the following: 1) Identification information of the first downlink reference signal resource set.

[0138] For example, the identification information of a CSI-RS resource set or subset (associated CSI-RS resource set or subset index (id)).

[0139] 2) Identification information of the uplink reference signal resource set, which is associated with the first downlink reference signal resource set.

[0140] For example, the SRS resource set identifier is srs-ResourceSetId in NR.

[0141] For example, an SRS resource subset identifier, which is associated with the SRS-ResourceSet configuration corresponding to the uplink reference signal. For instance, the SRS resource subset identifier is associated with the srs-ResourceSetId in the SRS-ResourceSet configuration, such as SRS resource subset #1 represented as SRS-ResourceSet #1.

[0142] 3) Resource indication information, which is used to indicate the downlink reference signal resources included in the first downlink reference signal resource set.

[0143] The resource indication information may indicate all downlink reference signal resources included in the first downlink reference signal resource set, or the identification information corresponding to these resources.

[0144] For example, an SRS trigger state defined by a network-side device contains the index of all triggered CSI-RS resources.

[0145] For example, a bitmap sequence indicating resources triggered by a network-side device. The length of the bitmap sequence is equal to the number of downlink reference signal resources in the second downlink reference signal resource set associated with the first uplink reference signal. A 1 indicates that the downlink reference signal resource corresponding to this bit is triggered, and a 0 indicates that the downlink reference signal resource corresponding to this bit is not triggered. It can be understood that the bits in the bitmap correspond to downlink reference signal resources of the same order in the second downlink reference signal resource set.

[0146] For example, a bitmap sequence indicating that a network-side device is muteing a resource. The length of the bitmap sequence is equal to the number of downlink reference signal resources in the second downlink reference signal resource set associated with the first uplink reference signal. A 1 indicates that the downlink reference signal resource corresponding to this bit is muteed, and a 0 indicates that the downlink reference signal resource corresponding to this bit is mutated. It can be understood that the bits in the bitmap correspond to downlink reference signal resources of the same order in the second downlink reference signal resource set.

[0147] 4) TCI status information, which is associated with the first downlink reference signal resource set.

[0148] For example, the association between the TCI status information and the first downlink reference signal resource set is indicated by the network-side device or predefined by the protocol.

[0149] 5) Power control parameter indication information, which is associated with the first downlink reference signal resource set.

[0150] For example, the power control parameter indication information includes path loss reference signal (pathlossReferenceRS) information, which is associated with the first downlink reference signal resource set. The association between the path loss referenceRS information and the first downlink reference signal resource set is indicated by the network-side device or predefined by the protocol.

[0151] 6) Port set identification information, which is associated with the first downlink reference signal resource set.

[0152] The port set identification information includes, for example, the CSI-RS port group index (id).

[0153] 7) Port indication information, which is associated with the first downlink reference signal resource set.

[0154] For example, it indicates port information used for uplink reception, such as a bitmap sequence. The length of the bitmap sequence is equal to the number of downlink reference signal ports in the second downlink reference signal resource set associated with the first uplink reference signal, for example, the total number of CSI-RS ports. A 1 indicates that the downlink reference signal port corresponding to this bit is triggered, and a 0 indicates that the downlink reference signal port corresponding to this bit is not triggered. It can be understood that the bits in the bitmap correspond to downlink reference signal ports of the same order in the second downlink reference signal resource set; wherein triggering a port indicates using that port to transmit downlink signals and / or receive uplink signals.

[0155] The indication of consecutive ports may include the starting port position and the total number of ports Q, indicating that Q consecutive ports starting from the starting port position are network-side ports for uplink reception corresponding to the first downlink reference signal resource set.

[0156] For example, it indicates port information not used for uplink reception, such as a bitmap sequence, the length of which is equal to the number of downlink reference signal ports in the second downlink reference signal resource set associated with the first uplink reference signal, such as the total number of CSI-RS ports. 1 indicates that the downlink reference signal port corresponding to this bit is muted, and 0 indicates that the downlink reference signal port corresponding to this bit is enabled.

[0157] 8) TRP group information or frequency domain resource information, which is associated with the first downlink reference signal resource set.

[0158] The TRP group information may include, for example, a TRP group index; or a set of TRPs used for Coherent Joint Reception (CJR), such as {TRP#1, TRP#2, TRP#3}.

[0159] This frequency domain resource information includes, for example, frequency domain resource group identifiers or frequency domain resource sets such as carrier groups, BWP groups, and frequency band groups.

[0160] 9) Frame structure information, wherein the frame structure information is used to determine the first downlink reference signal resource set; This example belongs to implicit indication, that is, the terminal determines the first downlink reference signal resource set actually triggered by the network-side device based on predefined rules and the frame structure information indicated by the network-side device.

[0161] The frame structure information includes, for example, frequency division duplexing (FDD), time division duplexing (TDD), or subband full duplexing (SBFD) configurations, and uplink or downlink carrier or frequency domain resource configurations.

[0162] 10) Uplink spatial constraint information, wherein the uplink spatial constraint information is used to indicate the constraint conditions of the receiving spatial characteristics used by the network-side device to receive the first uplink reference signal.

[0163] For example, the network-side device receives the receive beam vector information or port information that the first uplink reference signal is expected to use, or the network-side device receives the receive beam vector information or port information that the first uplink reference signal restricts to use.

[0164] This example belongs to implicit indication, that is, the terminal determines the first set of downlink reference signal resources actually triggered by the network-side device based on predefined rules and the uplink spatial constraint information indicated by the network-side device.

[0165] 11) Interference information, the interference information being used to determine the first downlink reference signal resource set.

[0166] The interference information includes, for example, one or more interference covariance matrix information measured by a network-side device. The network-side device can refer to a first device or a second device, wherein the first device is the network-side device that receives the first uplink reference signal, and the second device is another network-side device, such as a network-side device that is interfered with by the first uplink reference signal.

[0167] This example belongs to implicit indication, that is, the terminal determines the first downlink reference signal resource set actually triggered by the network-side device based on predefined rules and the interference information indicated by the network-side device.

[0168] For example, the second device indicates to the terminal the interference covariance matrix corresponding to the first uplink reference signal, indicating the interference caused by the uplink transmission between the terminal and the first device to the second device. The terminal determines that the first uplink reference signal cannot be directed to the second device based on the interference covariance matrix, that is, it determines the first downlink reference signal set associated with the first uplink reference signal based on the interference covariance matrix.

[0169] For example, the first device indicates to the terminal the interference covariance matrix of the first uplink reference signal to the second device, representing the interference caused to the second device by the uplink transmission between the terminal and the first device. This interference covariance matrix can be measured by the second device and sent to the first device through the network-side device-to-device interface. Based on the interference covariance matrix, the terminal determines that the first uplink reference signal cannot be directed to the second device; that is, it determines the first downlink reference signal set associated with the first uplink reference signal based on the interference covariance matrix.

[0170] For example, the first device indicates to the terminal the interference covariance matrix of the first uplink reference signal to the first device's received sensing signal, which represents the interference caused by the uplink transmission between the terminal and the first device to the first device's received sensing signal. The terminal determines the beam of the first uplink reference signal using the first device's received sensing signal based on the interference covariance matrix, that is, it determines the first downlink reference signal set associated with the first uplink reference signal based on the interference covariance matrix.

[0171] 12) First time window information, which indicates the time range of the downlink reference signal associated with the precoding information of the first uplink reference signal.

[0172] It can be understood that within the first time window prior to the transmission time of the first uplink reference signal, all downlink reference signals received by the terminal constitute the first downlink reference signal set. The terminal calculates the precoding information of the first uplink reference signal based on the first downlink reference signal set and transmits the first uplink reference signal.

[0173] In some embodiments, the terminal receiving the first information includes: the terminal receiving the first signaling, the first signaling including the first information, and the first signaling including DCI signaling or MAC-CE signaling.

[0174] The DCI signaling includes, for example, DCI format 0_0, DCI format 0_1, DCI format 0_2, DCI format 0_3, etc. in NR. For example, the first information is sent by DCI signaling that triggers aperiodic CSI-RS resources or aperiodic CSI-RS signals.

[0175] The MAC-CE signaling includes at least one of the following: 1) MAC-CE signaling for activation or deactivation of semi-persistent (SP) CSI-RS or CSI-IM resource set (SP CSI-RS / CSI-IM Resource Set Activation / Deactivation MAC CE).

[0176] 2) MAC-CE signaling used for semi-static SRS activation or deactivation (SP SRS Activation / Deactivation MAC CE). Specifically, in the fields of this MAC CE signaling... Fi When =1, resources IDi This can represent the NZPCSI-RS resource set identifier. i .

[0177] 3) MAC-CE signaling for semi-static or dynamic SRS spatial relationship indication (Enhanced SP / AP SRSSpatial Relation Indication MAC CE).

[0178] 4) MAC-CE signaling for semi-static or dynamic SRS TCI state indication (SP / AP SRS TCI StateIndication MAC CE).

[0179] 5) MAC-CE signaling used to indicate the activation or deactivation of spatial relation of PUCCH resource.

[0180] 6) MAC-CE signaling used for unified TCI state activation / deactivation (Unified TCI StatesActivation / Deactivation MAC CE).

[0181] 7) MAC-CE signaling for updating the SRS path loss reference signal (SRS Pathloss Reference RSUpdate MAC CE).

[0182] 8) MAC-CE signaling for updating PUSCH pathloss reference signals (PUSCH Pathloss ReferenceRS Update MAC CE).

[0183] In some embodiments, the terminal receiving the first information includes: the terminal receiving first trigger status information indicated by a network-side device; wherein the first trigger status information is used to indicate the first information, or the first trigger status information is used to indicate the first information and the identification information of the first uplink reference signal, the first uplink reference signal may be periodic, semi-persistent, or aperiodic, and the resources in the first downlink reference signal resource set may be aperiodic.

[0184] In some embodiments, the first uplink reference signal and the first downlink reference signal resource set are jointly triggered by a parameter field; or, the first uplink reference signal and the first downlink reference signal resource set are each triggered by an independent parameter field.

[0185] In some embodiments, the terminal transmitting the first uplink reference signal includes: transmitting the first uplink reference signal after a first time interval following the reception time of the first downlink reference signal resource set, wherein the first time interval includes at least one of the following: 1) First minimum time interval. The first minimum time interval includes at least one of the following: the time length required to determine or update the first precoding information after receiving the first downlink reference signal resource set; the time length required to transmit the first uplink reference signal after receiving the first downlink reference signal resource set.

[0186] 2) First interval, the first interval is the time interval between the reception time of the first downlink reference signal resource set and the transmission time of the first uplink reference signal.

[0187] 3) The second interval is the time interval between the reception time of the first downlink reference signal resource set and the transmission time of the next period of the first uplink reference signal.

[0188] 4) The third interval is the time interval between the first moment after the preset time interval of the reception time of the first downlink reference signal resource set and the transmission time of the first uplink reference signal in the next cycle after the first moment.

[0189] The first, second, and third intervals mentioned above can be configured by the network-side equipment; or they can be calculated by the terminal based on a formula, which can be configured by the network-side equipment or predefined.

[0190] In some embodiments, the method further includes: the terminal receiving first configuration information, the first configuration information including the configuration of the first uplink reference signal, the first configuration information including a first parameter, the first parameter being used to indicate the identifier of the second downlink reference signal resource set.

[0191] In some embodiments, the first configuration information further includes a second parameter, which indicates a first minimum time interval between the reception time of the first downlink reference signal resource set and the transmission time of the first uplink reference signal.

[0192] In some embodiments, the first configuration information further includes a third parameter, which is used to indicate path loss reference signal information; wherein the third parameter is associated with one or more reference signals in the first downlink reference signal resource set.

[0193] To illustrate in detail the method for transmitting or receiving uplink reference signals provided in the embodiments of this application, the following description will be provided in conjunction with several specific embodiments.

[0194] This application provides an embodiment that mainly describes the process of configuring N SRS-ResourceSets and dynamically switching them according to method one.

[0195] Taking the network side's first configuration information indication according to Method 1 as an example, assuming N=3, consider the configuration and transmission of Periodic or Semi-Persistent SRS. Then the interaction process and signaling between the UE and the network-side equipment are as follows: Figure 3 As shown, the steps include the following.

[0196] Step 1: The network-side device sends the second information to the UE, and the UE receives the second information.

[0197] The second information includes N SRS-ResourceSet configurations. The network-side device indicates the SRS-ResourceSet configurations #0, #1, ..., #N-1 to the UE via RRC configuration signaling, which correspond to the identifiers srs-ResourceSetId=0, srs-ResourceSetId=1, ..., and srs-ResourceSetId=N-1, respectively. Taking N=3 as an example, the corresponding associated CSI-RS resource set related parameters (such as the associatedCSI-RS parameter in NR, or other parameters with the aforementioned meaning, such as associatedCSI-RSset) are configured as CSI-RS resource set #0={CSI-RS#0, CSI-RS#1, CSI-RS#2, CSI-RS#3}, CSI-RS resource set #1={CSI-RS#0, CSI-RS#1}, and CSI-RS resource set #2={CSI-RS#2, CSI-RS#3}. The srs-ResourceIdList parameter configured in the three SRS-ResourceSets can be the same. In this case, the network-side device will only trigger the configuration of one of the SRS-ResourceSets each time. This can be a network-side implementation and is not subject to protocol constraints.

[0198] Alternatively, if the srs-ResourceIdList parameters configured in the three SRS-ResourceSets are different, the network-side device can trigger multiple different SRS-ResourceSet configurations each time. This can be considered a network-side implementation and is not subject to protocol constraints.

[0199] In some sub-implementations, the second information also includes N=3 TCI status information. The network-side device further indicates TCI statuses #0, #1, and #2 to the UE via RRC configuration signaling, which are respectively associated with SRS-ResourceSet configurations #0, #1, and #2. Optionally, the TCI status information can be configured based on a unified TCI framework.

[0200] In some sub-implementations, the second information also includes N=3 pathlossReferenceRSs. The network-side device also indicates pathlossReferenceRS #0, #1, and #2 to the UE via RRC configuration signaling, which are associated with SRS-ResourceSet configuration #0, #1, and #2, respectively.

[0201] Step 2: The network-side device sends the first information to the UE, and the UE receives the first information.

[0202] In some sub-implementations, the first information is srs-ResourceSetId. The network-side device indicates the srs-ResourceSetId to the UE via DCI or SPSRS Activation / Deactivation MAC CE signaling, triggering the corresponding SRS-ResourceSet and associated CSI-RS resource set. The UE sends SRS at least after the first effective time after the last time unit after receiving the first information.

[0203] In some sub-implementations, the first information is the CSI-RS resource set index. The network-side device indicates the CSI-RS resource set index to the UE through DCI or SP CSI-RS Resource Set Activation / Deactivation MAC CE signaling, triggering the corresponding CSI-RS resource set and SRS-ResourceSet. The UE receives the CSI-RS sent by the network side at least after the last time unit after receiving the first information.

[0204] In some sub-implementations, the network-side device can trigger an aperiodic CSI-RS resource set via DCI, using the transmission resources of a certain periodic SRS, and transmit aperiodic SRS based on the aperiodic CSI-RS resource set. The precoding information of the aperiodic SRS is calculated based on the aperiodic CSI-RS resource set. In this case, symbols in the original periodic or semi-persistent (P / SP) SRS that overlap with the aperiodic SRS are not transmitted (i.e., are discarded), and there are no symbols that overlap with the aperiodic SRS that can be transmitted. The transmission timing of one or more periodic SRS associated with the aperiodic CSI-RS resource set can be indicated by DCI or determined according to predefined rules, such as the transmission timing of the first periodic SRS after a first time length following the DCI and the subsequent transmission timings of multiple SRS.

[0205] When network-side equipment schedules PUSCH transmission, it needs to determine whether the SRI corresponding to the SRI is associated with a periodic SRS from an aperiodic CSI-RS resource set or a periodic SRS from a regular periodic CSI-RS resource set. The DCI carrying the SRI can explicitly indicate which type of SRS it is. For example, it can be indicated through a 1-bit field; or according to predefined rules, the SRI within a second time length after the transmission of the periodic SRS associated with the aperiodic CSI-RS resource set defaults to the periodic SRS associated with that aperiodic CSI-RS resource set; outside the second time length, the SRI defaults to the periodic SRS associated with the regular CSI-RS resource set.

[0206] In some sub-implementations, the first information is TCI state information. The network side indicates the TCI state information to the UE through DCI or SP / AP SRS TCIState Indication MAC CE signaling or Unified TCI States Activation / Deactivation MACCE signaling, triggering the corresponding SRS-ResourceSet and associated CSI-RS resourceset. The UE receives the CSI-RS sent by the network side device at least after the last time unit after receiving the first information, and the UE sends the SRS at least after the last time unit after receiving the first information.

[0207] In some sub-implementations, the first information is a pathlossReferenceRS identifier. The network-side device indicates the pathlossReferenceRS to the UE via DCI or SRS Pathloss Reference RS Update MAC CE signaling, triggering the corresponding SRS-ResourceSet and associated CSI-RS resource set. The UE receives the CSI-RS sent by the network side at least after the last time unit after receiving the first information, and the UE sends the SRS at least after the last time unit after receiving the first information.

[0208] Step 3: The UE determines the CSI-RS resource set associated with the SRS based on the first information, calculates the precoding information of the SRS based on the measurement results of all CSI-RS signals in the CSI-RS resource set, and sends the SRS using the precoding information.

[0209] Step 4: The network-side device receives and measures the SRS sent by the UE, and uses DCI to indicate the precoding information used by the UE for dynamic scheduling, such as SRI information.

[0210] Step 5: The UE sends PUSCH information using the precoded information indicated by the network side.

[0211] It is understandable that if the network-side device indicates multiple SRS-ResourceSet configurations through the first information, the UE will send multiple or more SRSs in the order indicated by the network side.

[0212] For example, if the network-side device indicates M=2 srs-ResourceSetId {0, 1}, then the UE will send M=2 SRS in the order indicated by the network-side device. It will calculate the precoding information according to the CSI-RS resourceset associated with srs-ResourceSetId=0 and the precoding information according to the CSI-RS resource set associated with srs-ResourceSetId=1, and then use it to send the SRS. When M takes other integer values ​​greater than 1, the same logic applies.

[0213] Optionally, after receiving the multiple or more sets of SRS, the network-side device can determine the antenna or port open / closed state of the network-side device based on the measurement results of the SRS (e.g., SINR, RSRP, RSRQ, SIR, SNR, etc.), and indicate the antenna or port open / closed state of the network-side device to the UE.

[0214] In this example, network-side devices can achieve dynamic antenna muting based on SRS measurements, which helps to save network energy.

[0215] Through the embodiments of this application, the configuration of each SRS-ResourceSet can be based on the current R19 configuration method. The network-side device further supports multiple configurations of the same SRS resource and can dynamically trigger one of the configurations as needed, which improves flexibility. At the same time, it can match the precoding information on the UE side with the receiving port on the network side and avoid beamforming gain loss.

[0216] This application provides an embodiment that mainly describes the process of configuring N CSI-RS resource sets for dynamic triggering according to method two on the network side device.

[0217] Taking the network side's first configuration information indication according to method two as an example, assuming N=3, consider the configuration and transmission of periodic or semi-persistent SRS. Then the interaction process and signaling between the UE and the network-side equipment are as follows: Figure 4 As shown, the steps include the following.

[0218] Step 1: The network-side device sends the second information to the UE, and the UE receives the second information.

[0219] The second information includes an SRS-ResourceSet configuration. The network-side device indicates the SRS-ResourceSet configuration to the UE through RRC configuration signaling, which includes N=3 associated CSI-RS parameters, namely CSI-RS resource set #0={CSI-RS#0, CSI-RS#1, CSI-RS#2, CSI-RS#3}, CSI-RS resource set #1={CSI-RS#0, CSI-RS#1}, and CSI-RS resource set #2={CSI-RS#2, CSI-RS#3}.

[0220] In some sub-implementations, the second information also includes N=3 TCI status information. The network-side device also indicates TCI status #0, #1, and #2 to the UE through RRC configuration signaling, which are associated with CSI-RS resource sets #0, #1, and #2, respectively. Optionally, the TCI status information can be configured based on the unified TCI framework.

[0221] In some sub-implementations, the second information also includes N=3 pathlossReferenceRSs. The network-side device also indicates pathlossReferenceRS #0, #1, and #2 to the UE via RRC configuration signaling, which are associated with CSI-RS resource sets #0, #1, and #2, respectively.

[0222] Step 2: The network-side device sends the first information to the UE, and the UE receives the first information.

[0223] In some sub-implementations, the first information is the CSI-RS resource set index. The network side indicates the CSI-RS resource set index to the UE through DCI or SP CSI-RS Resource Set Activation / Deactivation MAC CE signaling, triggering the associated CSI-RS resource set.

[0224] In some sub-implementations, the first information is TCI status information. The network side indicates the TCI status to the UE through DCI or SP / AP SRS TCIState Indication MAC CE signaling or Unified TCI States Activation / Deactivation MACCE signaling, triggering the associated CSI-RS resource set.

[0225] In some sub-implementations, the first information is the pathlossReferenceRS identifier. The network side indicates the pathlossReferenceRS to the UE through DCI or SRSPathloss Reference RS Update MAC CE signaling, triggering the associated CSI-RS resource set.

[0226] Step 3: The UE determines the CSI-RS resource set associated with the SRS based on the first information, calculates the precoding information of the SRS based on the measurement results of all CSI-RS signals in the CSI-RS resource set, and sends the SRS using the precoding information.

[0227] Step 4: The network-side device receives and measures the SRS sent by the UE, and uses DCI to indicate the precoding information used by the UE for dynamic scheduling, such as SRI information.

[0228] Step 5: The UE sends PUSCH information using the precoded information indicated by the network-side device.

[0229] It is understandable that if the network-side device indicates multiple CSI-RS resource sets through the first information, the UE will send multiple or more sets of SRS in the order indicated by the network side.

[0230] For example, if the network-side device indicates M=2 CSI-RS resource sets {#0, #1}, then the UE will send M=2 SRS sequentially according to the order indicated by the network side, calculating precoding information according to CSI-RS resource set #0 and CSI-RS resource set #1 respectively, for sending SRS; the same logic applies when M takes other integer values ​​greater than 1.

[0231] Optionally, after receiving the multiple or more sets of SRS, the network-side device can determine the antenna or port open / closed state of the network-side device based on the measurement results of the SRS, such as SINR, RSRP, RSRQ, SIR, SNR, etc., and indicate the antenna or port open / closed state of the network-side device to the UE.

[0232] In this example, network-side devices can achieve dynamic antenna muting based on SRS measurements, which helps to save network energy.

[0233] Through the embodiments of this application, the network-side device only needs to indicate one SRS-ResourceSet configuration, resulting in low RRC overhead. One of the CSI-RS resource sets can be dynamically triggered as needed, improving flexibility. At the same time, it can match the precoding information on the UE side with the receiving port on the network side, avoiding beamforming gain loss.

[0234] This application provides an embodiment that mainly describes the process of a network-side device dynamically triggering a portion of the CSI-RS in a CSI-RS resource set.

[0235] Taking the network-side device's SRS-ResourceSet configuration information indication according to R19 as an example, consider the configuration and transmission of periodic or semi-persistent SRS. Then, the interaction process and signaling between the UE and the network-side device are as follows: Figure 5 As shown, the steps include the following.

[0236] Step 1: The network-side device sends the second information to the UE, and the UE receives the second information.

[0237] The second information includes an SRS-ResourceSet configuration. The network side indicates the SRS-ResourceSet configuration to the UE through RRC configuration signaling, which includes an associated CSI-RS parameter, namely CSI-RS resource set={CSI-RS#0, CSI-RS#1, CSI-RS#2, CSI-RS#3}.

[0238] In some sub-implementations, the second information also includes multiple TCI states. The network side further indicates multiple TCI states to the UE via RRC configuration signaling, which are associated with different CSI-RS resource combinations in the CSI-RS resource set. For example, TCI state #0 is associated with the CSI-RS resource combination {CSI-RS#0, CSI-RS#1, CSI-RS#2, CSI-RS#3}, TCI state #1 is associated with the CSI-RS resource combination {CSI-RS#0, CSI-RS#1}, and TCI state #2 is associated with the CSI-RS resource combination {CSI-RS#2, CSI-RS#3}. Optionally, the TCI states can be configured based on the unified TCI framework.

[0239] In some sub-implementations, the second information also includes multiple pathlossReferenceRS. The network side further indicates multiple pathlossReferenceRS to the UE through RRC configuration signaling, which are associated with different CSI-RS resource combinations in the CSI-RS resource set. For example, pathlossReferenceRS#0 is associated with the CSI-RS resource combination {CSI-RS#0, CSI-RS#1, CSI-RS#2, CSI-RS#3}, pathlossReferenceRS#1 is associated with the CSI-RS resource combination {CSI-RS#0, CSI-RS#1}, and pathlossReferenceRS#2 is associated with the CSI-RS resource combination {CSI-RS#2, CSI-RS#3}.

[0240] Step 2: The network sends the first information to the UE, and the UE receives the first information.

[0241] In some sub-implementations, the network side indicates an SRS trigger state to the UE via DCI or MAC-CE signaling. The SRS trigger state is associated with a combination of CSI-RS resources in the CSI-RS resource set. For example, SRS trigger state #1 is associated with {CSI-RS #0, CSI-RS #1}.

[0242] In some sub-implementations, the network side indicates an SRS trigger state to the UE via DCI or MAC-CE signaling. The SRS trigger state indicates a trigger bitmap associated with the CSI-RS resource set. For example, the CSI-RS resource set contains 4 CSI-RS resources, and the SRS trigger state contains a 4-bit sequence 1100, indicating that {CSI-RS#0, CSI-RS#1} is triggered.

[0243] In some sub-implementations, the network side indicates an SRS trigger state to the UE via DCI or MAC-CE signaling. The SRS trigger state indicates a mute bitmap associated with the CSI-RS resource set. For example, if the CSI-RS resource set contains four CSI-RS resources, the SRS trigger state contains a 4-bit sequence 0011, indicating that {CSI-RS#2, CSI-RS#3} is mute and {CSI-RS#0, CSI-RS#1} is triggered.

[0244] In some sub-implementations, the first information is the TCI status. The network side indicates the TCI status to the UE through DCI or SP / AP SRS TCI StateIndication MAC CE signaling or Unified TCI States Activation / Deactivation MAC CE signaling, triggering the associated CSI-RS resource set.

[0245] In some sub-implementations, the first information is the pathlossReferenceRS identifier. The network side indicates the pathlossReferenceRS to the UE through DCI or SRSPathloss Reference RS Update MAC CE signaling, triggering the associated CSI-RS resource set.

[0246] In some sub-implementations, the first information is TRP subset information, such as a TRP subset identifier or a set of one or more TRP identifiers. The network side indicates the TRP subset information to the UE through DCI or MAC CE signaling, triggers the CSI-RS resources associated with the TRP subset, and triggers the UE to send precoded SRS based on the TRP subset. The precoded information of the SRS is calculated based on the CSI-RS resources associated with the TRP subset or the network side port.

[0247] like Figure 6 As shown, considering the existence of large-scale cooperative TRPs in the network supporting cooperative CJT transmission and / or cooperative CJR reception, in multi-user (MU) scenarios, when the same TRP set is in CJR, the SRS transmission between UEs may cause significant mutual interference. The network can reduce the interference between UE uplink transmissions and improve the uplink transmission performance of UEs by indicating different TRP subsets to different UEs, instructing UEs to calculate the precoder information of SRS based on the TRP subset in non-codebook transmission, and sending SRS based on the precoder information.

[0248] Step 3: The UE determines the set of CSI-RS resources associated with the SRS based on the first information, calculates the precoding information of the SRS based on the measurement results of all CSI-RS signals in the CSI-RS resource set, and sends the SRS using the precoding information.

[0249] Step 4: The network side receives and measures the SRS sent by the UE, and uses DCI to indicate the precoded information used by the dynamically scheduled UE, such as SRI information.

[0250] Step 5: The UE sends PUSCH information using the precoded information indicated by the network side.

[0251] It is understandable that if the network side indicates multiple CSI-RS resource combinations through the first information, the UE will send multiple or more sets of SRS in the order indicated by the network side.

[0252] For example, if the network-side device indicates M=2 CSI-RS resource combinations, namely {CSI-RS#0, CSI-RS#1, CSI-RS#2, CSI-RS#3} and {CSI-RS#0, CSI-RS#1}, then the UE will send M=2 SRSs in the order indicated by the network side, calculating precoding information based on {CSI-RS#0, CSI-RS#1, CSI-RS#2, CSI-RS#3} and calculating precoding information based on {CSI-RS#0, CSI-RS#1, CSI-RS#2} respectively, for use in sending SRSs; the same logic applies when M takes other integer values ​​greater than 1.

[0253] Optionally, after receiving the multiple or more sets of SRS, the network-side device can determine the antenna or port open / closed state of the network-side device based on the measurement results of the SRS, such as SINR, RSRP, RSRQ, SIR, SNR, etc., and indicate the antenna or port open / closed state of the network-side device to the UE.

[0254] In this example, network-side devices can achieve dynamic antenna muting based on SRS measurements, which helps to save network energy.

[0255] In some sub-implementations, the first information sent from the network side to the UE is first time window information. The UE constructs the first downlink reference signal resource set based on the downlink reference signals received within the first time window before the SRS transmission time. The downlink reference signals include, for example, CSI-RS.

[0256] The network-side device can be configured to have different transmission periods for different CSI-RS resources in a CSI-RS resource set. For example, the first part of the CSI-RS resource is transmitted in the first period, the second part of the CSI-RS resource is transmitted in the second period, and so on. The network side can flexibly trigger the transmission of each part of the CSI-RS resource. The UE calculates the SRS precoding information based on non-codebook transmission according to the CSI-RS received in the first time window before the SRS transmission time, and uses the precoding information to transmit the SRS.

[0257] Through the embodiments of this application, the network-side device only needs to indicate one SRS-ResourceSet configuration, resulting in low RRC overhead. It can dynamically trigger some of the CSI-RS resources as needed. The bitmap indication method in the SRS trigger state can support the triggering of any combination of CSI-RS resources, which is highly flexible. It can match the precoding information on the UE side with the receiving port on the network side, avoiding beamforming gain loss.

[0258] This application provides an embodiment that mainly describes the process by which a network-side device dynamically indicates a path loss reference signal using TCI status information.

[0259] Assuming the network-side device configures the SRS-ResourceSet to associate N=3 TCI states, and considering the configuration and transmission of Periodic or Semi-Persistent SRS, the interaction process and signaling between the UE and the network-side device for determining the SRS transmission power are as follows.

[0260] Step 1: The network-side device sends the first information to the UE, and the UE receives the first information.

[0261] The first piece of information is the TCI status information. The network side indicates the TCI status information to the UE through DCI or SP / AP SRS TCI State Indication MAC CE signaling or Unified TCI States Activation / Deactivation MAC CE signaling. The TCI status information is associated with the path loss reference signal (pathlossReferenceRS).

[0262] Step 2: Based on the first information, the UE determines the pathlossReferenceRS associated with the SRS, measures the downlink reference signal corresponding to the pathlossReferenceRS, calculates the uplink path loss, calculates the transmission power of the SRS based on the uplink path loss, and transmits the SRS using the transmission power.

[0263] Through the embodiments of this application, the network-side device dynamically adjusts the path loss reference signal for UE uplink power control based on TCI status information indication, so as to support uplink power calculation of SRS associated with any CSI-RS resource combination, thereby improving configuration flexibility and transmission reliability.

[0264] This application provides an embodiment that mainly describes the process of network-side devices directly and dynamically indicating path loss reference signals, decoupled from TCI status information.

[0265] Assuming the network-side device configures the SRS-ResourceSet to associate N=3 TCI states, and considering the configuration and transmission of Periodic or Semi-Persistent SRS, the interaction process and signaling between the UE and the network-side device for determining the SRS transmission power are as follows.

[0266] Step 1: The network-side device sends the first information to the UE, and the UE receives the first information.

[0267] The first piece of information is the pathlossReferenceRS identifier. The network-side device indicates the pathlossReferenceRS to the UE through DCI or SRS PathlossReference RS Update MAC CE signaling.

[0268] Step 2: The UE measures the corresponding downlink reference signal based on the first information pathlossReferenceRS, calculates the uplink path loss, calculates the transmission power of SRS based on the uplink path loss, and transmits SRS using the transmission power.

[0269] Through the embodiments of this application, the network-side device directly and dynamically indicates the path loss reference signal for UE uplink power control to support uplink power calculation of SRS associated with any CSI-RS resource combination, thereby improving transmission reliability; the pathlossReferenceRS indication is decoupled from the TCI status information indication, further improving the configuration flexibility.

[0270] This application provides an embodiment that mainly introduces the signaling design of SRS-ResourceSet configuration associated with a CSI-RS resource set containing K CSI-RS resources in non-codebook (NCB-based) transmission.

[0271] 1. The following will introduce the relevant solutions for Periodic / Semi-persistent SRS transmission.

[0272] The RRC signaling for configuring the SRS-ResourceSet sent by the network side includes the associatedCSI-RS parameter or the associatedCSI-RS-Set parameter, which indicates the NZP-CSI-RS-ResourceSetId. The NZP-CSI-RS-ResourceSetId is associated with a sequence containing K NZP-CSI-RS-ResourceIds, which indicates the CSI-RS resource set associated with the SRS resource set. Alternatively, the RRC signaling for configuring the SRS-ResourceSet may include a new parameter (e.g., associatedCSI-RSset-r19), which may appear only once with the associatedCSI-RS parameter in the NR, or may not be configured simultaneously, or may only have one effective parameter.

[0273] Among them, NZP-CSI-RS-ResourceSetId is equivalent to INTEGER (0..maxNrofNZP-CSI-RS-ResourceSets-1).

[0274] For forward compatibility considerations, network-side devices can add the parameter associatedCSI-RSset or associatedCSI-RSset-r19 to indicate the associated NZP-CSI-RS-ResourceSetId.

[0275] Furthermore, network-side devices can be configured with multiple associatedCSI-RS parameters or associatedCSI-RSset or associatedCSI-RSset-r19 parameters to indicate multiple CSI-RS resources or resource sets associated with an SRS resource set.

[0276] In the SP SRS Activation / Deactivation MAC CE signaling used to activate SRS transmission, the field Fi When =1, Resource IDi Indicates NZP-CSI-RS-ResourceId= i Or NZP-CSI-RS-ResourceSetId= i .

[0277] 2. The following will introduce the relevant schemes for Aperiodic SRS transmission.

[0278] The RRC signaling configured in the SRS-ResourceSet includes the csi-RS parameter, which indicates the NZP-CSI-RS-ResourceSetId. The NZP-CSI-RS-ResourceSetId is associated with a sequence containing K NZP-CSI-RS-ResourceIds, which indicates the CSI-RS resource set associated with the SRS resource set.

[0279] Among them, NZP-CSI-RS-ResourceSetId is equivalent to INTEGER (0..maxNrofNZP-CSI-RS-ResourceSets-1).

[0280] For forward compatibility, the network side can add the parameter csi-RS-r19 to indicate the associated NZP-CSI-RS-ResourceSetId.

[0281] Furthermore, the network side can configure multiple CSI-RS parameters or CSI-RS-r19 parameters to indicate multiple CSI-RS resources or resource sets associated with the SRS resource set.

[0282] The RRC signaling configured in the SRS-ResourceSet includes a timeOffset parameter, which indicates the minimum time difference between SRS transmission and CSI-RS resource set reception.

[0283] Specifically, the SRS and the CSI-RS resource set associated with the associatedCSI-RS or associatedCSI-RSset-r19 parameter are jointly triggered. The CSI-RS resource set is sent by the network side within a certain time range before the triggered SRS transmission. The minimum time difference between the SRS transmission and the CSI-RS resource set reception is timeOffset OFDM symbols. The timeOffset represents the time difference between the end boundary of the last symbol of the CSI-RS resource set received by the UE and the start boundary of the SRS transmission.

[0284] Optionally, the timeOffset parameter can be calculated using a function relationship indicated by the RRC signaling that configures the SRS-ResourceSet, such as a function associated with the number of CSI-RS resources in the CSI-RS resource set.

[0285] Optionally, the calculation relationship of timeOffset can be predefined by the protocol, for example, defined as... OFDM symbols, where the sub-carrier spacing (SCS) is configured. It is the minimum subcarrier spacing between the CSI-RS resource set (all CSI-RS resources) and the SRS transmission.

[0286] Optionally, the CSI-RS resource set may represent the associated CSI-RS-Set configured in the SRS-ResourceSet by the network side (indicated by associated NZP-CSI-RS-ResourceSetId), or it may represent the CSI-RS resource set that is actually triggered.

[0287] 3. The following section will introduce the indication of path loss reference signal information.

[0288] In the RRC signaling of the SRS-ResourceSet resource set configuration, the pathlossReferenceRS parameter can be associated with the CSI-RS resource set, that is, the pathlossReferenceRS parameter indicates one or more NZP-CSI-RS-ResourceIds.

[0289] Furthermore, if multiple NZP-CSI-RS-ResourceIds are indicated, the UE calculates the SRS transmit power based on predefined rules using the minimum / maximum / average / median / joint path loss of the first CSI-RS.

[0290] This application provides an embodiment that mainly describes how, in UL multi-stream transmission, the network side indicates multiple downlink reference signal resource sets or TRP groups.

[0291] In some embodiments, the network side indicates to the UE multiple downlink reference signal resource sets or TRP groups through first information for uplink multi-stream transmission or multi-panel transmission.

[0292] Furthermore, in this case, the first information may also include at least one of the following: 1) Receive indication information, which is used to indicate whether the network-side device should cooperate in receiving the first uplink reference signal associated with the plurality of downlink reference signal resource sets or TRP groups.

[0293] 2) Transport layer information, which is used to indicate at least one of the following associated with the downlink reference signal resource set or TRP group: transport layer index, maximum number of transport layers, rank, number of transport data streams, and transport data stream index.

[0294] Here, the receiving indication information indicates whether the network side cooperates in receiving, which will affect the UE's determination of the transmission power of the first uplink reference signal.

[0295] If the network-side equipment performs coherent joint reception, the first uplink reference signal is transmitted using a uniform transmit power and precoding information. This uniform transmit power and precoding information are determined based on measurements from multiple downlink reference signal resource sets (or downlink reference signal resource sets associated with a TRP group). For example, the transmit power of the first uplink reference signal is determined based on the minimum path loss among all downlink reference signal resource sets, and the precoding information of the first uplink reference signal is determined based on the joint channel of all downlink reference signal resource sets.

[0296] Alternatively, if the network-side equipment does not perform coordinated reception, it means that the UE transmits different first uplink reference signals based on multiple panels. In this case, the multiple first uplink reference signals are transmitted with different transmission powers. The transmission power and precoding information of any one of the first uplink reference signals are determined based on the measurement results of the downlink reference signal resource set (or the downlink reference signal resource set associated with the TRP group) associated with this first uplink reference signal. For example, the transmission power of the corresponding first uplink reference signal is determined based on the minimum path loss in this downlink reference signal resource set, and the precoding information of the corresponding first uplink reference signal is determined based on the channel of this downlink reference signal resource set.

[0297] Furthermore, the network-side device can also indicate the transport layer number or transport data stream index corresponding to each first uplink reference signal or the set of downlink reference signals associated with each first uplink reference signal.

[0298] For example, the network-side device configures an SRS-ResourceSet associated with three associated CSI-RS-ResourceSets, namely CSI-RS resource set #1, #2, and #3; the network-side device indicates that the reception mode is two-stream (2 layers), non-coordinated reception. In the first information, the network side further indicates that the first stream (layer 1) is associated with {CSI-RS resource set #1, CSI-RS resource set #2}, and the second stream (layer 2) is associated with CSI-RS resource set #3. Then, based on the channel measurement of all reference signal ports in {CSI-RS resource set #1, CSI-RS resource set #2}, the UE determines the precoding information and transmission power of the first stream SRS, and based on the channel measurement of all reference signal ports in CSI-RS resource set #3, determines the precoding information and transmission power of the second stream SRS, and transmits the first stream SRS and the second stream SRS respectively.

[0299] The following section uses the example of the first uplink reference signal being SRS to further describe the mapping relationship between SRS resource set and SRS transport stream, as well as the indication method for multi-stream SRI.

[0300] Regarding the mapping relationship between SRS resource sets and SRS transport streams, the SRS of each stream in a multi-stream SRS transmission is transmitted in a code-division, frequency-division, or time-division manner. For example, in code-division multi-stream SRS transmission mode, the SRS of each transport stream is transmitted on the same time-frequency resource using different sequences, and the SRS is transmitted using the precodes of each transport stream. As another example, in frequency-division multi-stream SRS transmission mode, the SRS of each transport stream is transmitted on the same time resource (optionally the same sequence) using different comb offsets, and the SRS is transmitted using the precodes of each transport stream. As yet another example, in time-division multi-stream SRS transmission mode, the SRS of each transport stream is transmitted on different time resources (e.g., for N-stream SRS transmission, N consecutive SRS resources), and the SRS is transmitted using the precodes of each transport stream.

[0301] It is understandable that for code division and frequency division transmission methods, network-side devices reserve code domain resources or frequency domain resources when configuring SRS resource sets to cope with possible SRS multi-stream transmission; or, the network-side devices configure an upper limit N_up for the number of SRS multi-stream transmissions, and the number of code domain resources or frequency domain resources reserved when configuring SRS resource sets is determined according to N_up, and the number of SRS transmission streams determined by the terminal does not exceed N_up. For time division transmission methods, according to predefined rules, the network-side devices indicate from the SRS resource set that the SRS resource subset corresponds to a group of SRS for SRS multi-stream transmission. It can be understood that the number of SRS resources in the SRS resource subset is equal to the number of streams in SRS multi-stream transmission.

[0302] Furthermore, the network-side device indicates the number of multiple SRS transport streams and the corresponding SRS resource occupancy, thereby determining that multiple SRS resource subsets correspond to different numbers of SRS transport streams. For example, the network-side device configures an SRS resource set containing 8 SRS resources; and instructs the terminal that the SRS transport streams include single-stream transmission (corresponding to 4 SRS resources) and dual-stream transmission (corresponding to 4 SRS resources). The terminal sends SRS on the first 4 SRS resources, determining 4 precodes for single-stream SRS transmission according to the requirements of single-stream transmission, and sends SRS on the last 4 SRS resources, determining two sets of dual-stream SRS transmission precodes according to the requirements of dual-stream transmission, and sending them on the 5th and 6th SRS resources, and the 7th and 8th SRS resources, respectively.

[0303] For SRI indication in multi-stream transmission, it can be indicated according to SRI groups, or multiple SRIs can be indicated according to the needs of multi-stream transmission (requiring expansion of the corresponding fields in the signaling). For example, it can indicate the ID of the SRS resource subset. For code division and frequency division SRS transmission modes, multi-stream SRS is associated with the time resource of the SRS resource, so the SRI group ID can be defined according to the time resource. For time division SRS transmission mode, it is defined according to the division result of the SRS resource subset, for example, numbered according to the transmission order based on the division result.

[0304] This application provides an embodiment that mainly describes the signaling configuration for dynamically triggering the first downlink reference signal resource set and the first uplink reference signal.

[0305] The network-side equipment can trigger the UE to receive the first downlink reference signal resource set through downlink control indication (DCI) signaling, and further trigger the UE to send the first uplink reference signal.

[0306] In one embodiment, the transmission of the first uplink reference signal is aperiodic, or in other words, the first uplink reference signal resources are configured aperiodically. It can be understood that the first downlink reference signal resource set is aperiodic. There are two signaling configuration methods: Method 1: The first uplink reference signal and the first downlink reference signal resource set are jointly triggered through a parameter field.

[0307] In this scenario, the network-side device pre-configures a first trigger state, which includes the first uplink reference signal information and the first downlink reference signal resource set information. Furthermore, the network side also configures the association between the first trigger state and the downlink control signaling (DCI). The network-side device indicates the first trigger state to the UE via the DCI, signifying the triggering of the first uplink reference signal and the first downlink reference signal resource set indicated in the first trigger state.

[0308] It is understood that the first trigger state is configured by the network-side device based on RRC signaling. For example, the first trigger state (TriggerState) can be defined in RRC fields such as SRS-Config (e.g., SRS-ResourceSet field), PUSCH-Config, or BWP-Config.

[0309] Specifically, each of the first trigger states can be associated with a DCI codepoint. For example, a DCI can be a K-bit binary sequence, and this DCI can be associated with up to 2... K For the first trigger state, taking K=2 as an example, when the DCI codepoint is '00', it corresponds to the first trigger state index of the UE being 0; when the DCI codepoint is '01', it corresponds to the first trigger state index of the UE being 1; when the DCI codepoint is '10', it corresponds to the first trigger state index of the UE being 2; and when the DCI codepoint is '11', it corresponds to the first trigger state index of the UE being 3.

[0310] Furthermore, the first trigger status signaling field may include at least one of the following: 1) First uplink reference signal information, such as the aperiodicSRS-ResourceTrigger or aperiodicSRS-ResourceTriggerList parameter, is used to indicate the identification information of one or more aperiodic uplink reference signals that trigger the transmission.

[0311] 2) First downlink reference signal resource set information, such as aperiodicCSI-RS-ResourceTrigger, or aperiodicCSI-RS-ResourceTriggerList, or aperiodicCSI-RS-ResourceSetTriggerList, or aperiodicCSI-RS-ResourceSetTriggerList parameters, are used to indicate the identification information of the first downlink reference signal that triggers transmission or the effective aperiodic downlink reference signal resource.

[0312] It is worth noting that the resource set described in the invention is not necessarily a specific concept of a resource set, but can also represent one or more resources.

[0313] The following example illustrates the form of the first downlink reference signal resource set that is triggered.

[0314] In some cases, network-side devices configure a first uplink reference signal (e.g., SRS, or SRS-ResourceSet) to be associated with a second downlink reference signal resource set or multiple downlink reference signal resources (e.g., CSI-RS resource set or CSI-RS resource) via RRC signaling. For example, if CSI-RS resource set#1 = {CSI-RS resource#1, CSI-RS resource#2, CSI-RS resource#3} is associated, then the triggered first downlink reference signal resource set can be at least one of the following: 1) One or more sets consisting of some or all of the downlink reference signal resources in the second downlink reference signal resource set.

[0315] For example, CSI-RS resource set = {CSI-RS resource#1, CSI-RS resource#2}; or for example, CSI-RS resource set #A = {CSI-RS resource#1, CSI-RS resource#2} and CSI-RS resource set #B = {CSI-RS resource#3}.

[0316] 2) The second downlink reference signal resource set, such as CSI-RS resource set #1.

[0317] 3) One or more sets of some or all of the downlink reference signal resources.

[0318] For example, {CSI-RS resource#1, CSI-RS resource#2}; or for example, {CSI-RS resource#1, CSI-RS resource#2} and {CSI-RS resource#3}.

[0319] In other cases, the network side configures a first uplink reference signal (e.g., SRS, or SRS-ResourceSet) to be associated with multiple second downlink reference signal resource sets via RRC signaling. For example, it may be associated with CSI-RS resourceset#1 = {CSI-RS resource#1, CSI-RS resource#2, CSI-RS resource#3} and CSI-RS resource set#2 = {CSI-RS resource#4, CSI-RS resource#5}. In this case, the triggered first downlink reference signal resource set can be at least one of the following: 1) Among the plurality of second downlink reference signal resource sets, a set is formed by some or all of the resources of each second downlink reference signal resource set.

[0320] For example, the union of CSI-RS resource #1 and CSI-RS resource #2 in CSI-RS resource set #1 and CSI-RS resource #4 in CSI-RS resource set #2 constitutes CSI-RS resource set = {CSI-RS resource #1, CSI-RS resource #2, CSI-RS resource #4}.

[0321] 2) Among the plurality of second downlink reference signal resource sets, each second downlink reference signal resource set constitutes a plurality of sets consisting of some or all of its resources.

[0322] For example, CSI-RS resource #1 and CSI-RS resource #2 in CSI-RS resource set #1 constitute CSI-RS resource set #A = {CSI-RS resource #1, CSI-RS resource #2}, and CSI-RS resource #4 in CSI-RS resource set #2 constitutes CSI-RS resource set #B = {CSI-RS resource #4}.

[0323] It is understood that each of the plurality of sets may contain one or more resources from the second downlink reference signal resource set, for example, CSI-RS resource set #C={CSI-RS resource#3, CSI-RSresource#4}; 3) One or more of the plurality of second downlink reference signal resource sets; For example, triggering a set CSI-RS resource set #1; or, for example, triggering multiple sets CSI-RS resource set #1 and CSI-RS resource set #2.

[0324] Method 2: The first downlink reference signal resource set is triggered by a single parameter field.

[0325] In this scenario, the network side indicates the first uplink reference signal via downlink control signaling (DCI), and correspondingly, also indicates a parameter field associated with the first uplink reference signal, which corresponds to the first downlink reference signal resource set. It can be understood that the DCI contains a field indicating information about the first downlink reference signal associated with the first uplink reference signal. The network-side device triggers the first uplink reference signal and its associated first downlink reference signal resource set by sending the DCI.

[0326] Specifically, each parameter field value can be associated with one or a set of downlink reference signal resources. For example, the DCI can include a Q-bit long bitmap sequence as a parameter field to trigger the first set of downlink reference signal resources, indicating the triggering status of Q downlink reference signal resources. Taking Q=2 as an example, when the parameter field is '10', it corresponds to the triggering of the first downlink reference signal resource; when the parameter field is '11', it corresponds to the triggering of both the first and second downlink reference signal resources, or it can be understood as the triggering of the reference signal resource set consisting of the first and second downlink reference signal resources.

[0327] The possible forms of the first downlink reference signal resource set triggered by the network-side device are similar to those in Method 1, and will not be described again here. Please refer to the example in Method 1.

[0328] In one embodiment, the transmission of the first uplink reference signal is periodic, or in other words, the first uplink reference signal resource is periodically configured. It can be understood that the first downlink reference signal resource set is aperiodic.

[0329] In this case, DCI triggers a first downlink reference signal resource set to determine at least one of the following: precoding information, power control parameters, timing advance, and spatial relationship parameters for the next, or the next associated first uplink reference signal transmission timing after a first time interval.

[0330] Specifically, the terminal transmits the first uplink reference signal after a first time interval following the reception time of the first downlink reference signal resource set. At least one of the following information in the first uplink reference signal—including precoding information, power control parameters, timing advance information, and spatial relationship parameters—is determined based on the first downlink reference signal resource set. The first time interval includes at least one of the following: 1) The first minimum time interval delta_t1.

[0331] 2) First interval, the first interval is the time interval between the reception time of the first downlink reference signal resource set and the transmission time of the first uplink reference signal.

[0332] 3) The second interval is the time interval between the reception time of the first downlink reference signal resource set and the transmission time of the next period of the first uplink reference signal.

[0333] 4) The third interval is the time interval between the first moment after the preset time interval of the reception time of the first downlink reference signal resource set and the transmission time of the first uplink reference signal in the next cycle after the first moment.

[0334] It can be understood that the reception time of the downlink reference signal resource set represents the end time when the UE receives the last symbol of all downlink reference signals in the downlink reference signal resource set, and the transmission time of the uplink reference signal represents the start time when the UE transmits the uplink reference signal.

[0335] Where the above embodiments or implementation methods do not contradict each other, the above embodiments or implementation methods may be used in combination.

[0336] The above combination Figure 2The method for transmitting an uplink reference signal according to embodiments of this application is described in detail below. Figure 7 A method for receiving an uplink reference signal according to another embodiment of this application is described in detail. It will be understood that the interaction between the network-side device and the terminal, as described from the perspective of the network-side device, is... Figure 2 The terminal-side descriptions in the methods shown are the same or corresponding; to avoid repetition, relevant descriptions are omitted as appropriate.

[0337] Figure 7 This is a schematic diagram illustrating the implementation flow of the uplink reference signal receiving method according to an embodiment of this application, which can be applied to network-side devices. For example... Figure 7 As shown, the method 700 includes the following steps.

[0338] S702: The network-side device sends first information, the first information being used to indicate a first downlink reference signal resource set, the first downlink reference signal resource set being used to indicate the transmission parameters of a first uplink reference signal, and the resources in the first downlink reference signal resource set belonging to a second downlink reference signal resource set.

[0339] S704: The network-side device receives the first uplink reference signal.

[0340] In this embodiment of the application, the network-side device sends first information, which is used to indicate a first downlink reference signal resource set. The first downlink reference signal resource set is used to indicate the transmission parameters of the first uplink reference signal. Thus, the terminal can use the first downlink reference signal resource set indicated by the network-side device to determine the transmission parameters, so that the transmission parameters calculated by the terminal match the actual situation, thereby improving beamforming gain and enhancing the performance of the communication system.

[0341] In some embodiments, the transmission parameters indicating the first uplink reference signal include at least one of the following: 1) precoding information indicating the first uplink reference signal; 2) power control parameters indicating the first uplink reference signal; 3) spatial relationship parameters indicating the first uplink reference signal; and 4) timing advance indicating the first uplink reference signal.

[0342] In some embodiments, before the network-side device receives the first uplink reference signal, the method further includes: the network-side device sending second information, the second information being used to indicate at least one of the following: 1) one or more downlink reference signal resource sets associated with the first uplink reference signal; 2) TCI status information; 3) path loss reference signal information.

[0343] In some embodiments, the network-side device sending the first information includes: the network-side device sending first trigger status information; wherein the first trigger status information is used to indicate the first information; or, the first trigger status information is used to indicate the first information and the identification information of the first uplink reference signal.

[0344] In some embodiments, the method further includes: the network-side device sending first configuration information, the first configuration information including the configuration of the first uplink reference signal, the first configuration information including a first parameter, the first parameter being used to indicate the identifier of the second downlink reference signal resource set.

[0345] In some embodiments, the first information includes at least one of the following: 1) receiving indication information, which is used to indicate whether the network-side device cooperatively receives the first uplink reference signal associated with a plurality of first sets; wherein the first downlink reference signal resource set includes the plurality of first sets; 2) transport layer information, which is used to indicate at least one of the following associated with the first set: transport layer index, maximum number of transport layers, rank, number of transport data streams, and transport data stream index; wherein the first set includes: a portion of resources in one or more second downlink reference signal resource sets; or all resources in one or more second downlink reference signal resource sets.

[0346] In some embodiments, the network-side device receiving the first uplink reference signal includes: receiving the first uplink reference signal after a first time interval following the transmission time of the first downlink reference signal resource set, wherein the first time interval includes at least one of the following: 1) a second minimum time interval delta_t2; 2) a fourth interval, the fourth interval being the time interval between the transmission time of the first downlink reference signal resource set and the reception time of the first uplink reference signal; 3) a fifth interval, the fifth interval being the time interval between the transmission time of the first downlink reference signal resource set and the reception time of the next period of the first uplink reference signal; 4) a sixth interval, the sixth interval being the time interval between a first time after a preset time interval following the transmission time of the first downlink reference signal resource set and the reception time of the next period of the first uplink reference signal after the first time.

[0347] The definition of "second minimum time interval delta_t2" in this embodiment may be different from that of "first minimum time interval delta_t1" in the terminal-side embodiment. For example, delta_t2 = delta_t1 + 2*T_ue2bs, where T_ue2bs represents the transmission time between the network-side device and the terminal device.

[0348] The uplink reference signal transmission or reception method provided in this application can be executed by an uplink reference signal transmission or reception device. This application uses an uplink reference signal transmission or reception device executing the uplink reference signal transmission or reception method as an example to illustrate the uplink reference signal transmission or reception device provided in this application.

[0349] This application provides an uplink reference signal transmitting or receiving device. As an example, the uplink reference signal transmitting or receiving device can be a communication device or a component within a communication device, such as a chip. The communication device can be a terminal, a network-side device, or a server, etc. Exemplarily, the terminal can be, but is not limited to, the type of terminal 11 listed above, and the network-side device can be, but is not limited to, the type of network-side device 12 listed above. This application does not impose specific limitations.

[0350] The uplink reference signal transmitting or receiving device includes a receiving module, a transmitting module, and a processing module. These modules can be implemented in software or hardware. When implemented in hardware, the processing module can be implemented by a processor. For example, the processor can include general-purpose processors, special-purpose processors, etc., such as central processing units (CPUs), microprocessors, digital signal processors (DSPs), artificial intelligence (AI) processors, graphics processing units (GPUs), application-specific integrated circuits (ASICs), network processors (NPs), field-programmable gate arrays (FPGAs), or other programmable logic devices, gate circuits, transistors, discrete hardware components, etc. The receiving and transmitting modules can be implemented by a communication interface, which can include one or more of the following: transceivers, pins, circuits, buses, radio frequency units, etc.

[0351] For details, see Figure 8 When the uplink reference signal transmitting device is a terminal or a component in a terminal, the uplink reference signal transmitting device 800 includes the following modules.

[0352] The receiving module 802 is used to receive first information, the first information being used to indicate a first downlink reference signal resource set, the first downlink reference signal resource set being used to determine the transmission parameters of a first uplink reference signal, and the resources in the first downlink reference signal resource set belonging to a second downlink reference signal resource set.

[0353] The transmitting module 804 is used to transmit the first uplink reference signal.

[0354] In this embodiment, the terminal can use the first downlink reference signal resource set indicated by the network-side device to determine the transmission parameters, so that the transmission parameters calculated by the terminal match the actual situation, thereby improving beamforming gain and enhancing the performance of the communication system.

[0355] In some embodiments, determining the transmission parameters of the first uplink reference signal includes at least one of the following: 1) determining the precoding information of the first uplink reference signal; 2) determining the power control parameters of the first uplink reference signal; 3) determining the spatial relationship parameters of the first uplink reference signal; 4) determining the timing advance of the first uplink reference signal.

[0356] In some embodiments, resources in the second downlink reference signal resource set are associated with the first uplink reference signal.

[0357] In some embodiments, the second downlink reference signal resource set includes all downlink reference signal resources configured by the network-side device for the terminal.

[0358] In some embodiments, the first downlink reference signal resource set includes a first set, which includes: a portion of resources in one or more of the second downlink reference signal resource sets; or all resources in one or more of the second downlink reference signal resource sets.

[0359] In some embodiments, the first downlink reference signal resource set includes a plurality of first sets, the first set including: a portion of resources in one or more second downlink reference signal resource sets; or all resources in one or more second downlink reference signal resource sets.

[0360] In some embodiments, the first information further includes at least one of the following: 1) receiving indication information, which is used to indicate whether the network-side device cooperates to receive the first uplink reference signal associated with a plurality of first sets; wherein the first downlink reference signal resource set includes the plurality of first sets; 2) transport layer information, which is used to indicate at least one of the following associated with the first set: transport layer index, maximum number of transport layers, rank, number of transport data streams, and transport data stream index.

[0361] In some embodiments, the apparatus further includes a processing module for determining first precoding information based on the first information; the transmitting module 804 is further configured to transmit the first uplink reference signal based on the first precoding information; wherein the first precoding information includes: precoding information calculated based on measurements of the first downlink reference signal resource set.

[0362] In some embodiments, the apparatus further includes a processing module, configured to determine first time information based on the first information; and, based on the first time information, determine to transmit the first uplink reference signal based on first precoding information or second precoding information; wherein the first precoding information includes: precoding information calculated by measuring the first downlink reference signal resource set; and the second precoding information includes: precoding information used to transmit the second uplink reference signal, wherein the transmission time of the second uplink reference signal is earlier than the transmission time of the first uplink reference signal.

[0363] In some embodiments, the first time information is used to indicate a first minimum time interval, the first minimum time interval including at least one of the following: 1) the time length required to determine or update the first precoding information after receiving the first downlink reference signal resource set; 2) the time length required to send the first uplink reference signal after receiving the first downlink reference signal resource set.

[0364] In some embodiments, the processing module is configured to: 1) determine whether to transmit the first uplink reference signal based on the second precoding information, or determine whether to not transmit the first uplink reference signal, when the time length between the transmission time of the first uplink reference signal and the reception time of the first downlink reference signal resource set is less than the first minimum time interval; 2) determine whether to transmit the first uplink reference signal based on the first precoding information, or determine whether to transmit the first uplink reference signal based on the second precoding information, or determine whether to not transmit the first uplink reference signal, when the time length between the transmission time of the first uplink reference signal and the reception time of the first downlink reference signal resource set is equal to the first minimum time interval; 3) determine whether to transmit the first uplink reference signal based on the first precoding information, when the time length between the transmission time of the first uplink reference signal and the reception time of the first downlink reference signal resource set is greater than the first minimum time interval.

[0365] In some embodiments, the processing module is configured to: 1) determine the first time information from the first information, wherein the first information includes the first time information; 2) determine the first downlink reference signal resource set based on the first information, and determine the first time information based on the first downlink reference signal resource set and a first calculation rule; 3) determine the first downlink reference signal resource set based on the first information, and determine the first time information based on the association between the first downlink reference signal resource set and the first time information.

[0366] In some embodiments, the apparatus further includes a processing module for determining the transmission power of the first uplink reference signal based on the first information.

[0367] In some embodiments, the processing module is configured to: 1) determine TCI status information based on the first information, determine path loss reference signal information based on the TCI status information, and determine the transmission power of the first uplink reference signal based on the path loss reference signal information; 2) determine path loss reference signal information based on the first information and determine the transmission power of the first uplink reference signal based on the path loss reference signal information.

[0368] In some embodiments, the processing module is configured to determine a first transmission power of the first uplink reference signal when it is determined, based on the first information, that the network-side devices cooperate in receiving the first uplink reference signals associated with multiple first sets; or, based on the first information, to determine a second transmission power of the first uplink reference signal when it is determined, based on the first information, that the network-side devices do not cooperate in receiving the first uplink reference signals associated with multiple first sets; wherein the first set includes: a portion of resources in one or more second downlink reference signal resource sets; or all resources in one or more second downlink reference signal resource sets.

[0369] In some embodiments, the first transmit power of the first uplink reference signal associated with the plurality of first sets is the same, and the first transmit power is determined based on the measurement results of the plurality of first sets; or, the second transmit power of the first uplink reference signal associated with any one of the first sets is determined based on the measurement results of the first set associated with the first uplink reference signal; wherein, the first downlink reference signal resource set includes a plurality of the first sets.

[0370] In some embodiments, the receiving module 802 is further configured to receive second information, the second information being configured to indicate at least one of the following: 1) one or more downlink reference signal resource sets associated with the first uplink reference signal; 2) TCI status information; 3) path loss reference signal information; 4) uplink reference signal resource set configuration.

[0371] In some embodiments, the second information indicates a plurality of downlink reference signal resource sets associated with the first uplink reference signal by at least one of the following: 1) indicating N uplink reference signal resource set configurations, each uplink reference signal resource set configuration including an associated downlink reference signal resource set; wherein, any two uplink reference signal resource set configurations among the N uplink reference signal resource set configurations contain different downlink reference signal resource sets; 2) indicating an uplink reference signal resource set configuration, the uplink reference signal resource set configuration including N associated downlink reference signal resource sets; wherein, any two downlink reference signal resource sets among the N downlink reference signal resource sets are different; 3) indicating an uplink reference signal resource set configuration, the uplink reference signal resource set configuration including N1 uplink reference signal resource subsets, each uplink reference signal resource subset associated with a downlink reference signal resource set; wherein, any two uplink reference signal resource subsets among the N1 uplink reference signal resource subsets are associated with different downlink reference signal resource sets; N and N1 are integers greater than 1.

[0372] In some embodiments, the second information is used to indicate a plurality of TCI status information; wherein the plurality of TCI status information satisfies at least one of the following: 1) any one of the TCI status information is associated with a path loss reference signal or a path loss reference signal group; 2) any one of the TCI status information is associated with an uplink reference signal resource set configuration, a downlink reference signal resource set, or an uplink reference signal resource subset in the second information.

[0373] In some embodiments, the path loss reference signal information includes multiple path loss reference signals or multiple path loss reference signal groups; wherein any one of the path loss reference signals or path loss reference signal groups is associated with the uplink reference signal resource set configuration, downlink reference signal resource set, or uplink reference signal resource subset in the second information.

[0374] In some embodiments, the first information includes at least one of the following: 1) identification information of the first downlink reference signal resource set; 2) identification information of the uplink reference signal resource set, the uplink reference signal resource set being associated with the first downlink reference signal resource set; 3) resource indication information, the resource indication information being used to indicate the downlink reference signal resources included in the first downlink reference signal resource set; 4) TCI status information, the TCI status information being associated with the first downlink reference signal resource set; 5) power control parameter indication information, the power control parameter indication information being associated with the first downlink reference signal resource set; 6) port set identification information, the port set identification information being associated with the first downlink reference signal resource set; 7) port The following information is provided: 8) Port indication information, which is associated with the first downlink reference signal resource set; 9) TRP group information or frequency domain resource information, which is associated with the first downlink reference signal resource set; 10) Frame structure information, which is used to determine the first downlink reference signal resource set; 11) Uplink spatial constraint information, which is used to indicate the constraint conditions of the receiving spatial characteristics used by the network-side device to receive the first uplink reference signal; 12) Interference information, which is used to determine the first downlink reference signal resource set; and 13) First time window information, which indicates the time range of the downlink reference signal associated with the precoding information of the first uplink reference signal.

[0375] In some embodiments, the receiving module 802 is configured to receive a first signaling, the first signaling including the first information, the first signaling including DCI signaling or MAC-CE signaling; wherein the MAC-CE signaling includes at least one of the following: 1) MAC-CE signaling for activating or deactivating semi-static CSI-RS or CSI-IM resource sets; 2) MAC-CE signaling for activating or deactivating semi-static SRS; 3) MAC-CE signaling for indicating spatial relationships in semi-static or dynamic SRS; 4) MAC-CE signaling for indicating TCI status in semi-static or dynamic SRS; 5) MAC-CE signaling for activating or deactivating PUCCH spatial relationship indication; 6) MAC-CE signaling for activating or deactivating unified TCI status; 7) MAC-CE signaling for updating SRS path loss reference signals; 8) MAC-CE signaling for updating PUSCH path loss reference signals.

[0376] In some embodiments, the receiving module 802 is configured to receive first trigger status information indicated by a network-side device; wherein the first trigger status information is used to indicate the first information; or, the first trigger status information is used to indicate the first information and the identification information of the first uplink reference signal.

[0377] In some embodiments, the first uplink reference signal and the first downlink reference signal resource set are jointly triggered by a parameter field; or, the first uplink reference signal and the first downlink reference signal resource set are each triggered by an independent parameter field.

[0378] In some embodiments, the transmitting module 804 is configured to transmit the first uplink reference signal after a first time interval following the reception time of the first downlink reference signal resource set, wherein the first time interval includes at least one of the following: 1) a first minimum time interval; 2) a first interval, wherein the first interval is the time interval between the reception time of the first downlink reference signal resource set and the transmission time of the first uplink reference signal; 3) a second interval, wherein the second interval is the time interval between the reception time of the first downlink reference signal resource set and the transmission time of the first uplink reference signal in the next cycle; 4) a third interval, wherein the third interval is the time interval between a first time after a preset time interval following the reception time of the first downlink reference signal resource set and the transmission time of the first uplink reference signal in the next cycle following the first time.

[0379] In some embodiments, the receiving module 802 is further configured to receive first configuration information, the first configuration information including the configuration of the first uplink reference signal, the first configuration information including a first parameter, the first parameter being used to indicate the identifier of the second downlink reference signal resource set.

[0380] In some embodiments, the first configuration information further includes a second parameter, which indicates a first minimum time interval between the reception time of the first downlink reference signal resource set and the transmission time of the first uplink reference signal.

[0381] In some embodiments, the first configuration information further includes a third parameter, which is used to indicate path loss reference signal information; wherein the third parameter is associated with one or more reference signals in the first downlink reference signal resource set.

[0382] See Figure 9 When the uplink reference signal receiving device is a network-side device or a component of a network-side device, the uplink reference signal receiving device 900 includes the following modules.

[0383] The transmitting module 902 is used to transmit first information, the first information being used to indicate a first downlink reference signal resource set, the first downlink reference signal resource set being used to indicate the transmission parameters of a first uplink reference signal, and the resources in the first downlink reference signal resource set belonging to a second downlink reference signal resource set.

[0384] The receiving module 904 is used to receive the first uplink reference signal.

[0385] In this embodiment, the transmitting module transmits first information, which is used to indicate a first downlink reference signal resource set. The first downlink reference signal resource set is used to indicate the transmission parameters of the first uplink reference signal. Thus, the terminal can use the first downlink reference signal resource set indicated by the network-side device to determine the transmission parameters, so that the transmission parameters calculated by the terminal match the actual situation, thereby improving beamforming gain and enhancing the performance of the communication system.

[0386] In some embodiments, the transmission parameters indicating the first uplink reference signal include at least one of the following: 1) precoding information indicating the first uplink reference signal; 2) power control parameters indicating the first uplink reference signal; 3) spatial relationship parameters indicating the first uplink reference signal; and 4) timing advance indicating the first uplink reference signal.

[0387] In some embodiments, the transmitting module 902 is further configured to transmit second information, the second information being configured to indicate at least one of the following: 1) one or more sets of downlink reference signal resources associated with the first uplink reference signal; 2) TCI status information; 3) path loss reference signal information.

[0388] In some embodiments, the sending module 902 is configured to send first trigger status information; wherein the first trigger status information is used to indicate the first information; or, the first trigger status information is used to indicate the first information and the identification information of the first uplink reference signal.

[0389] In some embodiments, the transmitting module 902 is further configured to transmit first configuration information, the first configuration information including the configuration of the first uplink reference signal, the first configuration information including a first parameter, the first parameter being used to indicate the identifier of the second downlink reference signal resource set.

[0390] In some embodiments, the first information includes at least one of the following: 1) receiving indication information, which is used to indicate whether the network-side device cooperatively receives the first uplink reference signal associated with a plurality of first sets; wherein the first downlink reference signal resource set includes the plurality of first sets; 2) transport layer information, which is used to indicate at least one of the following associated with the first set: transport layer index, maximum number of transport layers, rank, number of transport data streams, and transport data stream index; wherein the first set includes: a portion of resources in one or more second downlink reference signal resource sets; or all resources in one or more second downlink reference signal resource sets.

[0391] In some embodiments, the receiving module 904 is configured to: receive the first uplink reference signal after a first time interval following the transmission time of the first downlink reference signal resource set, wherein the first time interval includes at least one of the following: 1) a second minimum time interval; 2) a fourth interval, wherein the fourth interval is the time interval between the transmission time of the first downlink reference signal resource set and the reception time of the first uplink reference signal; 3) a fifth interval, wherein the fifth interval is the time interval between the transmission time of the first downlink reference signal resource set and the reception time of the first uplink reference signal in the next cycle; 4) a sixth interval, wherein the sixth interval is the time interval between a first time after a preset time interval following the transmission time of the first downlink reference signal resource set and the reception time of the first uplink reference signal in the next cycle following the first time.

[0392] The uplink reference signal transmitting or receiving device provided in this application embodiment can achieve Figures 2 to 7 The various processes implemented in the method embodiments achieve the same technical effect, and will not be described again here to avoid repetition.

[0393] like Figure 10 As shown in the illustration, this application also provides a communication device 1000, including a processor 1001 and a memory 1002. The memory 1002 stores a program or instructions that can run on the processor 1001. For example, when the communication device 1000 is a terminal, the program or instructions executed by the processor 1001 implement the various steps of the above-described uplink reference signal transmission method embodiment, and achieve the same technical effect. When the communication device 1000 is a network-side device, the program or instructions executed by the processor 1001 implement the various steps of the above-described uplink reference signal reception method embodiment, and achieve the same technical effect. To avoid repetition, further details are omitted here.

[0394] This application embodiment also provides a terminal, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement, for example... Figure 2 The steps in the method embodiment shown are illustrated. This terminal embodiment corresponds to the above-described terminal-side method embodiment. All implementation processes and methods of the above-described method embodiments can be applied to this terminal embodiment and achieve the same technical effect. The terminal can be... Figure 8 The illustrated uplink reference signal transmitting device. Specifically, Figure 11 A schematic diagram of the hardware structure of a terminal to implement an embodiment of this application. The terminal 1100 includes, but is not limited to, at least some of the following components: radio frequency unit 1101, network module 1102, audio output unit 1103, input unit 1104, sensor 1105, display unit 1106, user input unit 1107, interface unit 1108, memory 1109, and processor 1110.

[0395] Those skilled in the art will understand that the terminal 1100 may also include a power supply (such as a battery) for supplying power to various components. The power supply may be logically connected to the processor 1110 through a power management system, thereby enabling functions such as managing charging, discharging, and power consumption through the power management system. Figure 11 The terminal structure shown does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0396] It should be understood that, in this embodiment, the input unit 1104 may include a graphics processor 11041 and a microphone 11042. The graphics processor 11041 processes image data of still images or videos obtained by an image capture device (such as a camera) in video capture mode or image capture mode. The display unit 1106 may include a display panel 11061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 1107 includes at least one of a touch panel 11071 and other input devices 11072. The touch panel 11071 is also called a touch screen. The touch panel 11071 may include a touch detection device and a touch controller. Other input devices 11072 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, power buttons, etc.), trackballs, mice, and joysticks, which will not be described in detail here.

[0397] In this embodiment, after receiving downlink data from the network-side device, the radio frequency unit 1101 can transmit it to the processor 1110 for processing; in addition, the radio frequency unit 1101 can send uplink data to the network-side device. Typically, the radio frequency unit 1101 includes, but is not limited to, antennas, amplifiers, transceivers, couplers, low-noise amplifiers, duplexers, etc.

[0398] The memory 1109 can be used to store software programs or instructions, as well as various data. The memory 1109 may primarily include a first storage area for storing programs or instructions and a second storage area for storing data. The first storage area may store the operating system, application programs or instructions required for at least one function (such as sound playback, image playback, etc.). Furthermore, the memory 1109 may include volatile memory or non-volatile memory. The non-volatile memory may 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. Volatile memory can be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct memory bus RAM (DRRAM). The memory 1109 in this embodiment includes, but is not limited to, these and any other suitable types of memory.

[0399] Processor 1110 may include one or more processing units; optionally, processor 1110 integrates an application processor and a modem processor, wherein the application processor mainly handles operations involving the operating system, user interface, and applications, and the modem processor mainly handles wireless communication signals, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into processor 1110.

[0400] The radio frequency unit 1101 is used to transmit first information, which indicates a first downlink reference signal resource set, the first downlink reference signal resource set indicates the transmission parameters of a first uplink reference signal, and the resources in the first downlink reference signal resource set belong to a second downlink reference signal resource set; and to receive the first uplink reference signal.

[0401] In this embodiment, the terminal can use the first downlink reference signal resource set indicated by the network-side device to determine the transmission parameters, so that the transmission parameters calculated by the terminal match the actual situation, thereby improving beamforming gain and enhancing the performance of the communication system.

[0402] It is understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of the uplink reference signal transmission method embodiment and achieve the same or corresponding technical effects. To avoid repetition, it will not be described again here.

[0403] This application embodiment also provides a network-side device, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement, for example... Figure 7 The steps of the method embodiment shown are illustrated. This network-side device embodiment corresponds to the above-described network-side device method embodiment. All implementation processes and methods of the above-described method embodiments can be applied to this network-side device embodiment and can achieve the same technical effect.

[0404] Specifically, embodiments of this application also provide a network-side device, which can be... Figure 9 The receiving device for the uplink reference signal is shown. For example... Figure 12 As shown, the network-side device 1200 includes: an antenna 121, a radio frequency (RF) device 122, a baseband device 123, a processor 124, and a memory 125. The antenna 121 is connected to the RF device 122. In the uplink direction, the RF device 122 receives information through the antenna 121 and transmits the received information to the baseband device 123 for processing. In the downlink direction, the baseband device 123 processes the information to be transmitted and sends it to the RF device 122. The RF device 122 processes the received information and transmits it through the antenna 121.

[0405] The method executed by the network-side device in the above embodiments can be implemented in the baseband device 123, which includes a baseband processor.

[0406] The baseband device 123 may include, for example, at least one baseband board on which multiple chips are disposed, such as... Figure 12As shown, one of the chips is, for example, a baseband processor, which is connected to the memory 125 via a bus interface to call the program or instructions in the memory 125 to execute the network-side device operations shown in the above method embodiment.

[0407] The network-side device may also include a network interface 126, such as a Common Public Radio Interface (CPRI).

[0408] The radio frequency device 122 is used to transmit first information, the first information being used to indicate a first downlink reference signal resource set, the first downlink reference signal resource set being used to indicate the transmission parameters of a first uplink reference signal, and the resources in the first downlink reference signal resource set belonging to a second downlink reference signal resource set; and to receive the first uplink reference signal.

[0409] Furthermore, the network-side device 1200 in this embodiment of the application also includes: a program or instructions stored in memory 125 and executable on processor 124, wherein processor 124 calls the program or instructions in memory 125 to execute. Figure 9 The methods executed by each module shown achieve the same technical effect, and to avoid repetition, they will not be described in detail here.

[0410] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-described methods for transmitting or receiving uplink reference signals and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0411] The processor mentioned above is either the processor in the terminal described in the above embodiments or the processor in the network-side device. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk. In some examples, the readable storage medium may be a non-transient readable storage medium.

[0412] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the various processes of the above-described embodiments of the uplink reference signal transmission or reception method, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0413] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0414] This application also provides a computer program / program product, which is stored in a storage medium and executed by at least one processor to implement the various processes of the above-described methods for transmitting or receiving uplink reference signals, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0415] This application embodiment also provides an uplink reference signal transmission or reception system, including: a terminal and a network-side device, wherein the terminal can be used to perform the steps of the uplink reference signal transmission method described above, and the network-side device can be used to perform the steps of the uplink reference signal reception method described above.

[0416] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0417] From the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of computer software products plus necessary general-purpose hardware platforms, and of course, they can also be implemented by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.), and the computer software product includes several instructions to cause the terminal or network-side device to execute the methods described in the various embodiments of this application.

[0418] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other implementations under the guidance of this application without departing from the spirit and scope of the claims. All of these implementations are within the protection scope of this application.

Claims

1. A method for transmitting an uplink reference signal, characterized in that, include: The terminal receives first information, which is used to indicate a first downlink reference signal resource set. The first downlink reference signal resource set is used to determine the transmission parameters of a first uplink reference signal. The resources in the first downlink reference signal resource set belong to a second downlink reference signal resource set. The terminal sends the first uplink reference signal.

2. The method according to claim 1, characterized in that, The transmission parameters for determining the first uplink reference signal include at least one of the following: Determine the precoding information of the first uplink reference signal; Determine the power control parameters of the first uplink reference signal; Determine the spatial relationship parameters of the first uplink reference signal; Determine the timing advance of the first uplink reference signal.

3. The method according to claim 1 or 2, characterized in that, The resources in the second downlink reference signal resource set are associated with the first uplink reference signal.

4. The method according to claim 1 or 2, characterized in that, The second downlink reference signal resource set includes all downlink reference signal resources configured by the network-side equipment for the terminal.

5. The method according to any one of claims 1 to 4, characterized in that, The first downlink reference signal resource set includes a first set, which includes: a portion of resources in one or more second downlink reference signal resource sets; or all resources in one or more second downlink reference signal resource sets.

6. The method according to any one of claims 1 to 4, characterized in that, The first downlink reference signal resource set includes multiple first sets, and the first set includes: a portion of resources in one or more second downlink reference signal resource sets; or all resources in one or more second downlink reference signal resource sets.

7. The method according to claim 5 or 6, characterized in that, The first information also includes at least one of the following: The system receives indication information, which is used to instruct network-side devices whether to collaboratively receive the first uplink reference signals associated with multiple first sets; wherein, the first downlink reference signal resource set includes the multiple first sets; Transport layer information, which is used to indicate at least one of the following associated with the first set: transport layer index, maximum number of transport layers, rank, number of transport data streams, and transport data stream index.

8. The method according to any one of claims 1 to 7, characterized in that, Before the terminal sends the first uplink reference signal, the method further includes: The terminal determines the first precoding information based on the first information; The first uplink reference signal is sent based on the first precoded information; The first precoding information includes: precoding information calculated based on measurements of the first downlink reference signal resource set.

9. The method according to any one of claims 1 to 7, characterized in that, Before the terminal sends the first uplink reference signal, the method further includes: The terminal determines first time information based on the first information; and determines, based on the first time information, to send the first uplink reference signal based on the first precoding information or the second precoding information. The first precoding information includes: precoding information calculated from the measurement of the first downlink reference signal resource set; the second precoding information includes: precoding information used to transmit the second uplink reference signal, wherein the transmission time of the second uplink reference signal is earlier than the transmission time of the first uplink reference signal.

10. The method according to claim 9, characterized in that, The first time information is used to indicate a first minimum time interval, which includes at least one of the following: After receiving the first downlink reference signal resource set, determine or update the time length required for the first precoding information; The time length required to send the first uplink reference signal after receiving the first downlink reference signal resource set.

11. The method according to claim 10, characterized in that, The step of determining, based on the first time information, to transmit the first uplink reference signal based on the first precoding information or the second precoding information includes at least one of the following: If the time length between the transmission time of the first uplink reference signal and the reception time of the first downlink reference signal resource set is less than the first minimum time interval, it is determined to transmit the first uplink reference signal based on the second precoding information, or it is determined not to transmit the first uplink reference signal. If the time length between the transmission time of the first uplink reference signal and the reception time of the first downlink reference signal resource set is equal to the first minimum time interval, it is determined to transmit the first uplink reference signal based on the first precoding information, or to transmit the first uplink reference signal based on the second precoding information, or not to transmit the first uplink reference signal. If the time length between the transmission time of the first uplink reference signal and the reception time of the first downlink reference signal resource set is greater than the first minimum time interval, it is determined that the first uplink reference signal will be transmitted based on the first precoding information.

12. The method according to any one of claims 9 to 11, characterized in that, The terminal determines the first time information based on the first information, including at least one of the following: The terminal determines the first time information from the first information, wherein the first information includes the first time information; The terminal determines the first downlink reference signal resource set based on the first information, and determines the first time information based on the first downlink reference signal resource set and the first calculation rule. The terminal determines the first downlink reference signal resource set based on the first information, and determines the first time information based on the correlation between the first downlink reference signal resource set and the first time information.

13. The method according to any one of claims 1 to 12, characterized in that, Before the terminal sends the first uplink reference signal, the method further includes: The terminal determines the transmission power of the first uplink reference signal based on the first information.

14. The method according to claim 13, characterized in that, The terminal determines the transmission power of the first uplink reference signal based on the first information by including at least one of the following: Based on the first information, TCI status information is determined, path loss reference signal information is determined based on the TCI status information, and the transmission power of the first uplink reference signal is determined based on the path loss reference signal information. Based on the first information, path loss reference signal information is determined, and based on the path loss reference signal information, the transmission power of the first uplink reference signal is determined.

15. The method according to claim 13, characterized in that, The terminal determines the transmission power of the first uplink reference signal based on the first information, including: When the terminal determines, based on the first information, that network-side devices are collaboratively receiving multiple first sets of associated first uplink reference signals, a first transmission power of the first uplink reference signal is determined; or... When the terminal determines, based on the first information, that the network-side devices do not cooperate in receiving the first uplink reference signals associated with multiple first sets, the second transmission power of the first uplink reference signal is determined. The first set includes: a portion of the resources in one or more of the second downlink reference signal resource sets; or all the resources in one or more of the second downlink reference signal resource sets.

16. The method according to claim 15, characterized in that, The first transmit power of the first uplink reference signal associated with the plurality of first sets is the same, and the first transmit power is determined based on the measurement results of the plurality of first sets; or, The second transmit power of the first uplink reference signal associated with any first set is determined based on the measurement results of the first set associated with the first uplink reference signal; The first downlink reference signal resource set includes multiple sets of the first set.

17. The method according to any one of claims 1 to 16, characterized in that, Before the terminal sends the first uplink reference signal, the method further includes: the terminal receiving second information, the second information being used to indicate at least one of the following: One or more sets of downlink reference signal resources associated with the first uplink reference signal; TCI status information; Path loss reference signal information; Uplink reference signal resource set configuration.

18. The method according to claim 17, characterized in that, The second information indicates a plurality of downlink reference signal resource sets associated with the first uplink reference signal by at least one of the following: Indicates N uplink reference signal resource set configurations, each uplink reference signal resource set configuration including an associated downlink reference signal resource set; wherein, any two uplink reference signal resource set configurations among the N uplink reference signal resource set configurations contain different downlink reference signal resource sets; Indicates an uplink reference signal resource set configuration, the uplink reference signal resource set configuration including N associated downlink reference signal resource sets; wherein any two downlink reference signal resource sets among the N downlink reference signal resource sets are different; Indicates an uplink reference signal resource set configuration, the uplink reference signal resource set configuration comprising N1 uplink reference signal resource subsets, each uplink reference signal resource subset being associated with a downlink reference signal resource set; wherein, in the N1 uplink reference signal resource subsets, any two uplink reference signal resource subsets are associated with different downlink reference signal resource sets; N and N1 are integers greater than 1.

19. The method according to claim 17 or 18, characterized in that, The second information is used to indicate a plurality of TCI status information; wherein the plurality of TCI status information satisfies at least one of the following: Each of the TCI status information is associated with a path loss reference signal or a group of path loss reference signals; Each of the TCI status information is associated with the uplink reference signal resource set configuration, downlink reference signal resource set, or uplink reference signal resource subset in the second information.

20. The method according to any one of claims 17 to 19, characterized in that, The path loss reference signal information includes multiple path loss reference signals or multiple path loss reference signal groups; In this context, any one of the path loss reference signals or path loss reference signal groups is associated with the uplink reference signal resource set configuration, downlink reference signal resource set, or uplink reference signal resource subset in the second information.

21. The method according to any one of claims 1 to 20, characterized in that, The first information includes at least one of the following: Identification information of the first downlink reference signal resource set; The identification information of the uplink reference signal resource set, which is associated with the first downlink reference signal resource set; Resource indication information, wherein the resource indication information is used to indicate the downlink reference signal resources included in the first downlink reference signal resource set; TCI status information, which is associated with the first downlink reference signal resource set; Power control parameter indication information, which is associated with the first downlink reference signal resource set; Port set identification information, which is associated with the first downlink reference signal resource set; Port indication information, which is associated with the first downlink reference signal resource set; TRP group information or frequency domain resource information, wherein the TRP group information or frequency domain resource information is associated with the first downlink reference signal resource set; Frame structure information, wherein the frame structure information is used to determine the first downlink reference signal resource set; Uplink spatial constraint information, which is used to indicate the constraint conditions of the received spatial characteristics used by the network-side device to receive the first uplink reference signal; Interference information, the interference information being used to determine the first downlink reference signal resource set; First time window information, which indicates the time range of the downlink reference signal associated with the precoding information of the first uplink reference signal.

22. The method according to any one of claims 1 to 21, characterized in that, The terminal receiving the first information includes: the terminal receiving first signaling, the first signaling including the first information, the first signaling including DCI signaling or MAC-CE signaling; wherein, the MAC-CE signaling includes at least one of the following: MAC-CE signaling used for activating or deactivating semi-static CSI-RS or CSI-IM resource sets; MAC-CE signaling used for semi-static SRS activation or deactivation; MAC-CE signaling for semi-static or dynamic SRS spatial relationship indication; MAC-CE signaling for semi-static or dynamic SRS TCI status indication; MAC-CE signaling used to indicate activation or deactivation of PUCCH spatial relationships; MAC-CE signaling used to unify TCI status activation or deactivation; MAC-CE signaling used for SRS path loss reference signal update; MAC-CE signaling used for updating the PUSCH path loss reference signal.

23. The method according to any one of claims 1 to 22, characterized in that, The terminal receiving the first information includes: the terminal receiving first trigger status information indicated by the network-side device; Wherein, the first trigger status information is used to indicate the first information; or... The first trigger status information is used to indicate the identification information of the first information and the first uplink reference signal.

24. The method according to claim 23, characterized in that, The first uplink reference signal and the first downlink reference signal resource set are jointly triggered through a parameter field; or, The first uplink reference signal and the first downlink reference signal resource set are triggered by independent parameter fields.

25. The method according to any one of claims 1 to 24, characterized in that, The terminal transmitting the first uplink reference signal includes: transmitting the first uplink reference signal after a first time interval following the reception time of the first downlink reference signal resource set, wherein the first time interval includes at least one of the following: First minimum time interval; The first interval is the time interval between the reception time of the first downlink reference signal resource set and the transmission time of the first uplink reference signal; The second interval is the time interval between the reception time of the first downlink reference signal resource set and the transmission time of the next period of the first uplink reference signal; The third interval is the time interval between the first moment after a preset time interval of the reception time of the first downlink reference signal resource set and the transmission time of the first uplink reference signal in the next cycle after the first moment.

26. The method according to any one of claims 1 to 25, characterized in that, The method further includes: The terminal receives first configuration information, which includes the configuration of the first uplink reference signal and a first parameter, which is used to indicate the identifier of the second downlink reference signal resource set.

27. The method according to claim 26, characterized in that, The first configuration information also includes a second parameter, which indicates the first minimum time interval between the reception time of the first downlink reference signal resource set and the transmission time of the first uplink reference signal.

28. The method according to claim 26 or 27, characterized in that, The first configuration information also includes a third parameter, which is used to indicate path loss reference signal information; wherein the third parameter is associated with one or more reference signals in the first downlink reference signal resource set.

29. A method for receiving an uplink reference signal, characterized in that, include: The network-side device sends first information, which is used to indicate a first downlink reference signal resource set. The first downlink reference signal resource set is used to indicate the transmission parameters of a first uplink reference signal. The resources in the first downlink reference signal resource set belong to a second downlink reference signal resource set. The network-side device receives the first uplink reference signal.

30. The method according to claim 29, characterized in that, The transmission parameters indicating the first uplink reference signal include at least one of the following: Precoded information indicating the first uplink reference signal; Power control parameters indicating the first uplink reference signal; Spatial relationship parameters indicating the first uplink reference signal; The timing of the first uplink reference signal is advanced.

31. The method according to claim 29 or 30, characterized in that, Before the network-side device receives the first uplink reference signal, the method further includes: the network-side device sending second information, the second information being used to indicate at least one of the following: One or more sets of downlink reference signal resources associated with the first uplink reference signal; TCI status information; Path loss reference signal information.

32. The method according to any one of claims 29 to 31, characterized in that, The network-side device sending the first information includes: the network-side device sending first trigger status information; Wherein, the first trigger status information is used to indicate the first information; or... The first trigger status information is used to indicate the identification information of the first information and the first uplink reference signal.

33. The method according to any one of claims 29 to 32, characterized in that, The method further includes: The network-side device sends first configuration information, which includes the configuration of the first uplink reference signal and a first parameter, which is used to indicate the identifier of the second downlink reference signal resource set.

34. The method according to any one of claims 29 to 33, characterized in that, The first information includes at least one of the following: The network-side device receives indication information, which is used to indicate whether it will cooperate in receiving the first uplink reference signal associated with multiple first sets; wherein, the first downlink reference signal resource set includes the multiple first sets; Transport layer information, which is used to indicate at least one of the following associated with the first set: transport layer index, maximum number of transport layers, rank, number of transport data streams, and transport data stream index; The first set includes: a portion of the resources in one or more of the second downlink reference signal resource sets; or all the resources in one or more of the second downlink reference signal resource sets.

35. The method according to any one of claims 29 to 34, characterized in that, The network-side device receiving the first uplink reference signal includes: receiving the first uplink reference signal after a first time interval following the transmission time of the first downlink reference signal resource set, wherein the first time interval includes at least one of the following: Second minimum time interval; The fourth interval is the time interval between the transmission time of the first downlink reference signal resource set and the reception time of the first uplink reference signal; The fifth interval is the time interval between the transmission time of the first downlink reference signal resource set and the reception time of the next period of reception of the first uplink reference signal; The sixth interval is the time interval between the first moment after a preset time interval of the transmission time of the first downlink reference signal resource set and the reception time of the first uplink reference signal in the next cycle after the first moment.

36. An apparatus for transmitting an uplink reference signal, characterized in that, include: The receiving module is configured to receive first information, the first information being used to indicate a first downlink reference signal resource set, the first downlink reference signal resource set being used to determine the transmission parameters of a first uplink reference signal, and the resources in the first downlink reference signal resource set belonging to a second downlink reference signal resource set. The transmitting module is used to transmit the first uplink reference signal.

37. The apparatus according to claim 36, characterized in that, Meet at least one of the following: The transmission parameters indicating the first uplink reference signal include at least one of the following: precoding information indicating the first uplink reference signal; power control parameters indicating the first uplink reference signal; spatial relationship parameters indicating the first uplink reference signal; and timing advance indicating the first uplink reference signal. The device further includes a processing module for determining first precoded information based on the first information; The transmitting module is further configured to transmit the first uplink reference signal based on the first precoding information; wherein the first precoding information includes: precoding information calculated based on the measurement of the first downlink reference signal resource set; The device further includes a processing module, configured to determine first time information based on the first information; and, based on the first time information, determine whether to transmit the first uplink reference signal based on first precoding information or second precoding information; wherein the first precoding information includes: precoding information calculated from the measurement of the first downlink reference signal resource set; and the second precoding information includes: precoding information used to transmit the second uplink reference signal, wherein the transmission time of the second uplink reference signal is earlier than the transmission time of the first uplink reference signal. The device further includes a processing module for determining the transmission power of the first uplink reference signal based on the first information; The receiving module is further configured to receive second information, the second information being configured to indicate at least one of the following: one or more downlink reference signal resource sets associated with the first uplink reference signal; TCI status information; path loss reference signal information; uplink reference signal resource set configuration; The receiving module is further configured to receive first trigger status information indicated by the network-side device; wherein the first trigger status information is used to indicate the first information; or, the first trigger status information is used to indicate the first information and the identification information of the first uplink reference signal; The transmitting module is configured to transmit the first uplink reference signal after a first time interval following the reception time of the first downlink reference signal resource set, wherein the first time interval includes at least one of the following: a first minimum time interval; a first interval, wherein the first interval is the time interval between the reception time of the first downlink reference signal resource set and the transmission time of the first uplink reference signal; a second interval, wherein the second interval is the time interval between the reception time of the first downlink reference signal resource set and the transmission time of the first uplink reference signal in the next cycle; and a third interval, wherein the third interval is the time interval between a first time after a preset time interval following the reception time of the first downlink reference signal resource set and the transmission time of the first uplink reference signal in the next cycle following the first time. The receiving module is further configured to receive first configuration information, the first configuration information including the configuration of the first uplink reference signal, the first configuration information including a first parameter, the first parameter being used to indicate the identifier of the second downlink reference signal resource set.

38. A receiving device for an uplink reference signal, characterized in that, include: The transmitting module is used to transmit first information, the first information being used to indicate a first downlink reference signal resource set, the first downlink reference signal resource set being used to indicate the transmission parameters of a first uplink reference signal, and the resources in the first downlink reference signal resource set belonging to a second downlink reference signal resource set. The receiving module is used to receive the first uplink reference signal.

39. The apparatus according to claim 38, characterized in that, Meet at least one of the following: The transmission parameters indicating the first uplink reference signal include at least one of the following: precoding information indicating the first uplink reference signal; power control parameters indicating the first uplink reference signal; spatial relationship parameters indicating the first uplink reference signal; and timing advance indicating the first uplink reference signal. The transmitting module is further configured to transmit second information, the second information being used to indicate at least one of the following: one or more sets of downlink reference signal resources associated with the first uplink reference signal; TCI status information; path loss reference signal information; The sending module is configured to send first trigger status information; wherein the first trigger status information is used to indicate the first information; or, the first trigger status information is used to indicate the first information and the identification information of the first uplink reference signal; The sending module is further configured to send first configuration information, the first configuration information including the configuration of the first uplink reference signal, the first configuration information including a first parameter, the first parameter being used to indicate the identifier of the second downlink reference signal resource set; The first information includes at least one of the following: reception indication information, which is used to indicate whether the network-side device cooperates in receiving the first uplink reference signal associated with multiple first sets; wherein the first downlink reference signal resource set includes the multiple first sets; transport layer information, which is used to indicate at least one of the following associated with the first set: transport layer index, maximum number of transport layers, rank, number of transmitted data streams, and transmitted data stream index; wherein the first set includes: a portion of resources in one or more second downlink reference signal resource sets; or all resources in one or more second downlink reference signal resource sets; The receiving module is configured to receive the first uplink reference signal after a first time interval following the transmission time of the first downlink reference signal resource set, wherein the first time interval includes at least one of the following: a second minimum time interval; a fourth interval, wherein the fourth interval is the time interval between the transmission time of the first downlink reference signal resource set and the reception time of the first uplink reference signal; a fifth interval, wherein the fifth interval is the time interval between the transmission time of the first downlink reference signal resource set and the reception time of the first uplink reference signal in the next cycle; and a sixth interval, wherein the sixth interval is the time interval between a first time after a preset time interval following the transmission time of the first downlink reference signal resource set and the reception time of the first uplink reference signal in the next cycle following the first time.

40. A terminal, characterized in that, It includes a processor and a memory, the memory storing a program or instructions that can run on the processor, the program or instructions being executed by the processor to implement the steps of the method as described in any one of claims 1 to 28.

41. A network-side device, characterized in that, It includes a processor and a memory, the memory storing a program or instructions that can run on the processor, the program or instructions being executed by the processor to implement the steps of the method as described in any one of claims 29 to 35.

42. A readable storage medium, characterized in that, The readable storage medium stores a program or instructions that, when executed by a processor, implement the steps of the method as claimed in any one of claims 1 to 28, or the steps of the method as claimed in any one of claims 29 to 35.

Images