Signal transmitting device, signal receiving device and method

Abstract

The embodiments of the present invention provide a signal transmitting device, a signal receiving device and a method, which include the steps of: a terminal device receiving TCI state indication information, the TCI state indication information indicating at least one TCI state; determining an SRS resource set associated with the TCI state in a plurality of SRS resource sets; and transmitting an uplink signal using a parameter associated with the SRS resource set associated with the TCI state and / or a parameter associated with the TCI state. This can avoid ambiguity about which TRP the terminal device uses uplink transmission parameters, and can ensure throughput or reliability of uplink transmission by the terminal device using appropriate uplink transmission parameters to perform uplink transmission.

Description

[Technical Field]

[0001] FIELD OF THE INVENTION Embodiments of the present invention relate to the field of communications technology. [Background technology]

[0002] The 3GPP (registered trademark) standardization organization has standardized a unified transmission configuration indication (TCI) in the standardization process of Release 17 (Rel-17), where the unified TCI in Rel-17 is primarily designed for single transmission and reception point (sTRP) scenarios.

[0003] As standardization progresses, multiple transmission and reception points (mTRPs) will become an important scenario for 5G NR systems, and mTRP-based transmission can achieve improved throughput or reliability.

[0004] In previous standardization work, Rel-16 standardized Physical Downlink Shared Channel (PDSCH) transmission based on mTRP. Rel-17 standardized Physical Downlink Control Channel (PDCCH), Physical Uplink Shared Channel (PUSCH), and Physical Uplink Control Channel (PUCCH) transmission based on mTRP. Here, mTRP transmission includes mTRP transmission based on single Downlink Control Information (sDCI) and mTRP transmission based on multiple DCI (mDCI).

[0005] The above description of the background art is merely for the purpose of explaining the configuration of the present invention more clearly and completely, and is provided for the understanding of those skilled in the art. These configurations described in the background art of the present invention should not be construed as being well known to those skilled in the art. Summary of the Invention [Problem to be solved by the invention]

[0006] However, according to the discovery of the present inventors, the unified TCI in Rel-17 only applies to the sTRP scenario, and considering the importance of mTRP, it is necessary to design a corresponding unified TCI mechanism for the mTRP scenario.

[0007] In a scenario for a Rel-17 unified TCI single transmission and reception point (sTRP), a network device configures M (M≧1) TCI states for a terminal device using RRC signaling, activates N (1≦N≦M) TCI states among the M TCI states using MAC CE, and indicates L (1≦L≦N) TCI states among the N TCI states using DCI. Here, one TCI state (abbreviated as TCI) may include or correspond to one or two source reference signals (source RS). The source reference signals may provide quasi-co-location (QCL) information for downlink reception, which is referred to as a downlink source reference signal. The source reference signals may provide a reference for an uplink transmission spatial filter (UL TX spatial filter), which is referred to as an uplink source reference signal.

[0008] The source reference signal may provide beam information for a destination channel / signal. For example, the beam for a terminal device to receive the destination channel / signal may be the same as the beam for receiving the downlink source reference signal. As another example, the beam for a terminal device to transmit the destination channel / signal may be the same as the beam for transmitting the uplink source reference signal. As another example, the beam for a terminal device to transmit the destination channel / signal may be compatible with the beam for receiving the downlink source reference signal, i.e., a beam in the opposite direction may be used.

[0009] Therefore, indicating or updating the TCI state actually also includes indicating or updating the beam used by the terminal device. The TCI state includes a joint TCI state, a downlink TCI state, and an uplink TCI state. The source reference signal included in the downlink TCI state is a downlink source reference signal, the source reference signal included in the uplink TCI state is an uplink source reference signal, and the source reference signal included in the joint TCI state is both a downlink source reference signal and an uplink source reference signal. The joint TCI state affects both the downlink beam (receive beam) and the uplink beam (transmit beam). In other words, the downlink beam and the uplink beam use the same beam but have opposite beam directions, i.e., the uplink beam and the downlink beam are compatible. The downlink TCI state only affects the downlink beam. The uplink TCI state only affects the uplink beam. The uplink beam is also called the uplink transmit spatial filter. The TCI field may indicate a joint TCI state (joint DL / UL TCI), or the TCI field may indicate a separate TCI state (separate DL / UL TCI), i.e., a downlink TCI state and / or an uplink TCI state. Indicating a joint TCI state or a separate TCI state may be configured via RRC signaling.

[0010] In the unified TCI of Rel-17, for joint TCI states, one TCI field indicates one joint TCI state (equivalent to indicating both one downlink TCI state and one uplink TCI state), and for separate TCI states, one TCI field indicates one downlink TCI state, or one uplink TCI state, or a downlink TCI state and an uplink TCI state.

[0011] Although the standardization work for Rel-18 has not yet begun, the unified TCI for mTRP has already been decided as one of the Rel-18 projects. That is, 3GPP will standardize the unified TCI for mTRP in Rel-18. Functionally, the unified TCI for mTRP must be able to indicate the TCI status (multiple TCI statuses) of multiple TRPs (two or more TRPs) and the TCI status (single TCI status) of a single TRP. However, in an mTRP scenario, if a single TCI status is indicated, it may be unclear which TRP the terminal device should specifically perform uplink transmission for (i.e., which SRS resource set should be used to determine transmission parameters), which may result in uplink transmission failure and affect the overall performance of the system.

[0012] In view of at least one of the above problems, embodiments of the present invention provide a signal transmitting device, a signal receiving device and a method, which can avoid ambiguity about which TRP a terminal device should use uplink transmission parameters for (i.e., which SRS resource set the terminal device should use to determine transmission parameters), and ensure throughput or reliability of uplink transmission by using appropriate uplink transmission parameters. [Means for solving the problem]

[0013] One aspect of an embodiment of the present invention provides a signal transmission method, the method including: a step in which a plurality of SRS resource sets are configured for a terminal device; a step in which the terminal device receives TCI state indication information, the TCI state indication information indicating at least one TCI state; a step in which, among the plurality of SRS resource sets, an SRS resource set associated with the TCI state; and a step in which an uplink signal is transmitted using parameters associated with the SRS resource set associated with the TCI state and / or parameters associated with the TCI state.

[0014] Another aspect of an embodiment of the present invention provides a signal reception method applied to a network device, the method including: configuring a plurality of SRS resource sets; transmitting TCI state indication information, wherein the TCI state indication information indicates at least one TCI state, and at least one SRS resource set among the plurality of SRS resource sets is associated with the TCI state; and receiving an uplink signal transmitted by a terminal device, wherein the terminal device transmits the uplink signal using parameters associated with the SRS resource set associated with the TCI state and / or parameters associated with the TCI state.

[0015] Another aspect of an embodiment of the present invention provides a signal transmission device, the device including: a receiving unit that receives TCI state indication information, where the TCI state indication information indicates at least one TCI state; a determining unit that determines an SRS resource set associated with the TCI state from a plurality of configured SRS resource sets; and a transmitting unit that performs uplink transmission using parameters associated with the SRS resource set associated with the TCI state and / or parameters associated with the TCI state.

[0016] Another aspect of an embodiment of the present invention provides a signal receiving device, the device including: a configuration unit that configures a plurality of SRS resource sets; a transmission unit that transmits TCI state indication information, the TCI state indication information indicating at least one TCI state; and a reception unit that receives an uplink signal transmitted by a terminal device, the terminal device transmitting the uplink signal using parameters related to an SRS resource set associated with the TCI state and / or parameters related to the TCI state.

[0017] One of the advantageous effects of the embodiment of the present invention is as follows: a terminal device receives TCI state indication information, the TCI state indication information indicating at least one TCI state, determines an SRS resource set associated with the TCI state among a plurality of SRS resource sets, and transmits an uplink signal using parameters associated with the SRS resource set associated with the TCI state and / or parameters associated with the TCI state, thereby avoiding ambiguity regarding which uplink transmission parameters the terminal device should use, and ensuring throughput or reliability of uplink transmission by the terminal device using appropriate uplink transmission parameters to perform uplink transmission.

[0018] As shown in the following description and drawings, specific embodiments of the present invention are disclosed in detail to illustrate ways in which the principles of the present invention can be employed. However, the scope of the present invention is not limited to these embodiments. The present invention encompasses all modifications, alterations, and equivalents within the spirit and scope of the appended claims.

[0019] Features described and / or shown in one embodiment may be used in the same or similar manner in one or more other embodiments, may be combined with features in other embodiments, or may be substituted for features in other embodiments.

[0020] It should be noted that in this text, the term "comprise / have" means the presence of a feature, element, step or component, and does not exclude the presence or addition of one or more other features, elements, steps or components. [Brief explanation of the drawings]

[0021] Elements and features depicted in one drawing and one embodiment of an example of the invention may be combined with elements and features shown in one or more drawings or embodiments, and in the drawings, like reference numerals may indicate corresponding elements in multiple drawings and may indicate corresponding elements used in more than one embodiment. [Figure 1] 1 is a schematic diagram of a communication system according to an embodiment of the present invention; [Figure 2] FIG. 2 is a schematic diagram of an example scenario according to an embodiment of the present invention. [Figure 3] 1 is a schematic diagram of an example of a signal transmission method according to an embodiment of the present invention; [Figure 4] 1 is a schematic diagram of an example of transmission of an uplink signal by a terminal device according to an embodiment of the present invention; [Figure 5] FIG. 2 is a schematic diagram of an example of determining an associated SRS resource set according to an embodiment of the present invention; [Figure 6] FIG. 10 is a schematic diagram of another example of determining an associated SRS resource set according to an embodiment of the present invention; [Figure 7] 2 is a schematic diagram of an example of downlink / uplink allocation with or without scheduling according to an embodiment of the present invention; FIG. [Figure 8] FIG. 10 is a schematic diagram of an example of determining an associated SRS resource set based on an uplink source reference signal according to an embodiment of the present invention; [Figure 9] FIG. 2 is a schematic diagram of an example of indicating associated SRS resource sets according to an embodiment of the present invention; [Figure 10] FIG. 10 is a schematic diagram of an example of activating / deactivating a unified TCI state by a MAC CE according to an embodiment of the present invention; [Figure 11]FIG. 10 is a schematic diagram of another example of activating / deactivating a unified TCI state by a MAC CE according to an embodiment of the present invention; [Figure 12] 1 is a schematic diagram of an example of PUSCH repeated transmission according to an embodiment of the present invention; [Figure 13] FIG. 10 is a schematic diagram of another example of PUSCH repetitive transmission according to an embodiment of the present invention. [Figure 14] 1 is a schematic diagram of an example of a signal receiving method according to an embodiment of the present invention; [Figure 15] 1 is a schematic diagram of an example of a signal transmission device according to an embodiment of the present invention; [Figure 16] 1 is a schematic diagram of an example of a signal receiving device according to an embodiment of the present invention; [Figure 17] 1 is a schematic diagram of a configuration of a network device according to an embodiment of the present invention; [Figure 18] 1 is a schematic diagram of a terminal device according to an embodiment of the present invention; DETAILED DESCRIPTION OF THE INVENTION

[0022] The above and other features of the present invention will become apparent from the following description. In the specification and drawings, specific embodiments of the present invention are disclosed in detail, and some of the embodiments in which the principles of the present invention can be adopted are shown. However, the present invention is not limited to the described embodiments. The present invention includes all modifications, variations, and equivalents within the scope of the appended claims. Below, various embodiments of the present invention will be described with reference to the drawings. These embodiments are merely illustrative and do not limit the present invention.

[0023] In embodiments of the present invention, the terms "first," "second," etc. are used in titles to distinguish between different elements, but do not represent the spatial arrangement or temporal order of these elements, and these elements are not limited to these terms. The term "and / or" includes any and all combinations of one or more of the terms listed in the associated list. The terms "comprise," "include," "have," etc. refer to the presence of listed features, elements, elements, or components, but do not exclude the presence or addition of one or more other features, elements, elements, or components.

[0024] In the embodiments of the present invention, the singular forms "one," "the," etc., include the plural and should be understood broadly as "one kind" or "one class," and are not limited to "one." Furthermore, the term "said" should be understood to include both the singular and the plural, unless the context clearly indicates otherwise. Furthermore, the term "described in" should be understood to mean "described at least in part," and the term "based on" should be understood to mean "based at least in part," unless the context clearly indicates otherwise.

[0025] In embodiments of the present invention, the terms "communication network" or "wireless communication network" may refer to a network conforming to any communication standard, such as, for example, Long Term Evolution (LTE), Long Term Evolution Advanced (LTE-A, LTE-Advanced), Wideband Code Division Multiple Access (WCDMA), High-Speed ​​Packet Access (HSPA), etc.

[0026] Additionally, communications between devices in a communications system may occur according to any stage of communications protocol, including, but not limited to, 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G, and 5G, New Radio (NR), and / or other currently known or future developed communications protocols.

[0027] In an embodiment of the present invention, the term "network device" refers to a device in a communication system that allows a terminal device to access the communication system and provides a service to the terminal device, and may include, but is not limited to, a base station (BS), an access point (AP), a transmission reception point (TRP), a broadcast transmitter, a mobility management entity (MME), a gateway, a server, a radio network controller (RNC), a base station controller (BSC), etc.

[0028] Here, the base station may include, but is not limited to, a Node B (NodeB or NB), an evolved Node B (eNodeB or eNB), a 5G base station (gNB), etc., as well as a remote radio head (RRH), a remote radio unit (RRU), a relay, or a low-power node (e.g., femto, pico, etc.). Also, the term "base station" may include some or all of these functions, and each base station may provide communication coverage for a particular geographic area. The term "cell" may refer to a base station and / or its coverage area, depending on the context in which the term is used.

[0029] In the embodiments of the present invention, the term "User Equipment" (UE) or "Terminal Equipment" (TE) refers to a device that accesses a communication network and receives network services via, for example, a network device. The terminal device may be fixed or mobile, and may also be referred to as a mobile station (MS), a terminal, a subscriber station (SS), an access terminal (AT), a station, etc.

[0030] Here, the terminal device may include, but is not limited to, a cellular phone, a personal digital assistant (PDA), a wireless modulation / demodulation device, a wireless communication device, a handheld device, a machine-type communication device, a laptop computer, a cordless phone, a smartphone, a smart watch, a digital camera, etc.

[0031] Furthermore, for example, in a scenario such as the Internet of Things (IoT), the user device may be a monitoring or measurement device or apparatus, including, but not limited to, a Machine Type Communication (MTC) terminal, an in-vehicle communication terminal, an industrial wireless device, a surveillance camera, a Device to Device (D2D) terminal, a Machine to Machine (M2M) terminal, etc.

[0032] Furthermore, the term "network side" or "network device side" refers to the side of a network, which may be a base station or may include one or more of the network devices described above. The term "user side" or "terminal side" or "terminal device side" refers to the side of a user or terminal, which may be a UE or may include one or more of the terminal devices described above. In this specification, unless otherwise specified, "device" may refer to either a network device or a terminal device.

[0033] The following describes an example scenario of the present invention with reference to an example, but the present invention is not limited thereto.

[0034] 1 is a schematic diagram of a communication system according to an embodiment of the present invention, and schematically illustrates an example of a terminal device and a network device. As shown in FIG. 1, the communication system 100 may include a first TRP 101, a second TRP 102, and a terminal device 103. Here, the first TRP 101 and the second TRP 102 may be network devices. For convenience of explanation, FIG. 1 illustrates only two network devices and one terminal device as an example, but the embodiment of the present invention is not limited thereto.

[0035] In the embodiment of the present invention, existing services or services that can be implemented in the future can be performed between the first TRP 101, the second TRP 102, and the terminal device 103. For example, these services include, but are not limited to, enhanced mobile broadband (eMBB), massive machine type communication (mMTC), and ultra-reliable and low-latency communication (URLLC).

[0036] Rel-16 standardizes PDSCH transmission based on mTRP, and Rel-17 standardizes PDCCH, PUSCH, and PUCCH transmission based on mTRP. mTRP transmission includes mTRP transmission based on sDCI (single DCI) and mTRP transmission based on mDCI (multiple DCI). In sDCI mTRP, one DCI schedules uplink and downlink transmissions of two TRPs and is suitable when backhaul between TRPs is convenient. In mDCI mTRP, two TRPs schedule uplink and downlink transmissions of their respective TRPs using two DCIs and is suitable when backhaul between TRPs is not convenient.

[0037] However, in an mTRP scenario, when indicated by a unified TCI, the unified TCI may indicate the TCI status of multiple TRPs or may indicate the TCI status of a single TRP.

[0038] Taking PUSCH transmission by the terminal device 103 in the mTRP scenario as an example, as shown in Figure 1, the terminal device 103 transmits PUSCH in a PUSCH repetition manner. For example, it transmits to the first TRP 101 in slot 1, transmits to the second TRP 102 in slot 2, and so on.

[0039] In the mTRP scenario, for example, two SRS resource sets are configured in a terminal device. For example, a first SRS resource set (1st SRS resource set) corresponding to a first TRP 101 is configured for the terminal device 103, and a second SRS resource set (2nd SRS resource set) corresponding to a second TRP 102 is configured for the terminal device 103.

[0040] Due to differences in geographical locations between the first TRP 101 and the second TRP 102, the terminal device may transmit a PUSCH to the first TRP 101 and / or the second TRP 102 based on transmission parameters such as different precoding matrices, SRS resource indicators (SRIs), power control parameters, etc. The terminal device also obtains transmission parameters for the first TRP 101 and the second TRP 102 based on the first SRS resource set and the second SRS resource set.

[0041] For example, the transmission parameter is an SRS resource indicator (SRI). In the case of a dynamic UL grant, two SRI fields in the DCI indicate SRS resources in two SRS resource sets, respectively. In the case of a configured grant, two SRIs are configured by RRC for the two SRS resource sets. Therefore, the terminal device needs to know the mapping relationship between PUSCH repetitions and SRS resource sets, i.e., to know which SRS resource set each PUSCH repetition transmits based on.

[0042] Also, for a unified TCI in an mTRP, the TCI field may indicate two uplink TCI states or joint TCI states, or one uplink TCI state or joint TCI state. If two SRS resource sets are configured for a terminal device but the TCI field indicates only one uplink TCI state or joint TCI state, the terminal device cannot know which SRS resource set to use for transmission when performing uplink transmission.

[0043] Because the SRS resource is associated with an SRS resource set, the terminal device cannot know which SRS resource to use for transmission. Since information such as the antenna, precoding matrix, number of layers, and power control parameters used for uplink transmission are all determined based on the SRS resource set or the SRS resource, if the terminal device cannot know which SRS resource to use for transmission, the data rate (throughput) or reliability of uplink transmission may be impaired. The following will be briefly described with reference to the drawings.

[0044] 2 is a schematic diagram of an example scenario according to an embodiment of the present invention. As shown in FIG. 2, two SRS resource sets are configured for the terminal device 103, and one TCI state is indicated for the terminal device 103 at time T.

[0045] Although the terminal device 103 can know the corresponding uplink transmission beam based on the indicated TCI state, the terminal device 103 does not know which TRP (SRS resource set) the uplink beam corresponds to. Because the SRS resource indicator (SRI) and precoding matrix indicator (PMI) used by the terminal device 103 for the two TRPs are different, if the terminal device 103 transmits an uplink signal to the second TRP 102 using the SRI and PMI that should be used for the first TRP 101, an uplink signal transmission failure will occur, and vice versa.

[0046] In view of at least one of the above problems, embodiments of the present invention provide a signal transmission method, a signal reception method and an apparatus when a DCI is used to indicate a unified TCI for a multi-TRP scenario.

[0047] Example 1 An embodiment of the present invention provides a signal transmission method, which is applied to a terminal device, for which multiple SRS resource sets are configured.

[0048] 3 is a schematic diagram of an example of a signal transmission method according to an embodiment of the present invention. As shown in FIG. 3, the method includes the following steps:

[0049] Step 301: A terminal device receives a TCI status indication, which indicates at least one TCI status.

[0050] Step 302: Determine an SRS resource set associated with the TCI state among the plurality of SRS resource sets.

[0051] Step 303: Transmit an uplink signal using a parameter associated with the SRS resource set associated with the TCI state and / or a parameter associated with the TCI state.

[0052] It should be noted that the above-mentioned FIG. 3 merely illustrates an example of the present invention, and the present invention is not limited thereto. For example, the execution order of various steps may be appropriately adjusted, some other steps may be added, or some steps may be removed. Those skilled in the art can make appropriate modifications based on the above content, and are not limited to the description of the above-mentioned FIG. 3.

[0053] In some embodiments, the terms "TRP" and "SRS resource set" may be interchangeable. The terms "TRP" and "CSI-RS resource set" may be interchangeable. The terms "corresponding," "associated," and "comprising" may be interchangeable, and "uplink TCI state" and "joint TCI state" may be interchangeable. The terms "PUSCH," "PUSCH transmission," and "PUSCH transmission" may be interchangeable. Embodiments of the present invention are not limited thereto.

[0054] Thus, the terminal device receives TCI state indication information, which indicates at least one TCI state, determines an SRS resource set associated with the TCI state among a plurality of SRS resource sets, and transmits an uplink signal using parameters associated with the SRS resource set associated with the TCI state and / or parameters associated with the TCI state, thereby avoiding ambiguity regarding which uplink transmission parameters the terminal device should use, and ensuring throughput or reliability of uplink transmission by the terminal device using appropriate uplink transmission parameters to perform uplink transmission.

[0055] The following describes indicating at least one TCI state in step 301.

[0056] In some embodiments, the TCI status indication information is carried by a TCI field in a first DCI format, for example, the first DCI format is DCI format 1_1 or DCI format 1_2.

[0057] In some embodiments, the TCI status indication information indicates an uplink TCI status and / or a downlink TCI status, or the TCI status indication information indicates a joint TCI status to indicate an uplink TCI status and a downlink TCI status.

[0058] In some embodiments, the TCI status indication information is 1 joint TCI state, Two joint TCI states, Two downlink TCI states and two uplink TCI states; one downlink TCI state and one uplink TCI state; Two downlink TCI states and one uplink TCI state; Two uplink TCI states and one downlink TCI state; Two downlink TCI states, Two uplink TCI states, One downlink TCI state, or Indicates at least one TCI state of one uplink TCI state.

[0059] In some embodiments, one or more TCI states are indicated by a transmission configuration indication (TCI) field of DCI format 1_1 or DCI format 1_2. DCI format 1_1 or DCI format 1_2 may schedule downlink data, referred to as DCI format 1_1 / 1_2 with DL assignment, or may not schedule downlink data, referred to as DCI format 1_1 / 1_2 without DL assignment (specifically indicating unified TCI).

[0060] In some embodiments, the terminal device For a terminal device, two SRS resource sets are configured, for example, configured by a network device through RRC signaling: When DCI format 1_1 / 1_2 with / without DL assignment indicates transmission configuration indication (TCI) state indication information, and the TCI state indication information indicates one uplink TCI state (UL-TCIState) or one joint TCI state (DLorJoint-TCIState), For at least one of the cases within the duration of one uplink TCI state or a joint TCI state, an SRS resource set associated with the TCI state is determined.

[0061] In some embodiments, for example, assuming that two SRS resource sets are configured for a terminal device, the i-th SRS resource set of the two SRS resource sets is associated with the i-th panel, e.g., i=1, 2. The i-th SRS resource set is associated with the i-th uplink TCI state (UL-TCI State) or the i-th joint TCI state (DLorJoint-TCIState), e.g., i=1, 2. In some embodiments, the i-th power control parameter set is determined based on the i-th uplink TCI state (UL-TCI State) or the i-th joint TCI state (DLorJoint-TCIState), e.g., i=1, 2. In some embodiments, the power control parameter set i is determined based on the SRI field associated with the i-th SRS resource set, e.g., i=1, 2.

[0062] In some embodiments, the SRS resource set includes: A physical uplink shared channel (PUSCH) based on a dynamic grant, e.g., a PUSCH scheduled based on DCI format 0_1 ​​or DCI format 0_2 (in some embodiments, the PUSCH transmission based on the dynamic grant is a multiple TRP (mTRP) PUSCH transmission based on a single DCI (sDCI), e.g., dynamic grant transmissions for multiple TRPs are scheduled via a single DCI); PUSCH based on Type 1 configured grant (e.g., an uplink transmission grant is provided by the resource management layer (RRC), and the terminal device stores the configuration as a grant configuration); PUSCH based on Type 2 configured grant (e.g., an uplink transmission grant is provided by the Resource Management Layer (RRC) and a Physical Downlink Control Channel (PDCCH) stores or clears the configuration according to instructions for activating or deactivating the configuration); Periodic SRS, Semi-persistent Sounding Reference Signal (SRS), Aperiodic SRS, or It relates to at least one signal / channel of the Physical Uplink Control Channel (PUCCH).

[0063] In some embodiments, PUSCH transmission based on a dynamic grant includes an initial transmission and retransmission of a PUSCH that is not based on a Type 1 / Type 2 configured grant scheduled by DCI format 0_1 ​​or DCI format 0_2, and a PUSCH retransmission based on a Type 1 / Type 2 configured grant scheduled by DCI format 0_1 ​​or DCI format 0_2. For example, details of the above signals / channels may refer to the prior art, and the present invention is not limited thereto.

[0064] The following is an exemplary description of a method for determining an SRS resource set associated with at least one TCI state indicated by the TCI state indication information in step 302.

[0065] In some embodiments, the SRS resource set associated with the TCI state is a predetermined SRS resource set among the plurality of SRS resource sets, e.g., the SRS resource set associated with the TCI state is the first SRS resource set among the plurality of SRS resource sets, and the index of the SRS resource set is, e.g., 0.

[0066] In some embodiments, the SRS resource set associated with the TCI state is determined based on an indication of a second DCI format, which may include: Physical uplink shared channel (PUSCH) transmission based on dynamic grant; PUSCH transmission based on Type 2 configured grant, Physical Uplink Control Channel (PUCCH) transmission, Semi-persistent Sounding Reference Signal (SRS) transmission, or At least one of the aperiodic SRS transmissions is indicated or activated.

[0067] In some embodiments, during the operation time of one uplink TCI state or one joint TCI state, the terminal device receives a second DCI format and determines an SRS resource set associated with the one uplink TCI state or one joint TCI state based on the second DCI format. In some embodiments, the second DCI format may be DCI format 0_1 ​​or DCI format 0_2, or may be referred to as a second DCI format uplink transmission grant.

[0068] For example, an SRS resource set associated with a TCI state is indicated by an SRS resource set indicator field or an SRS request field in DCI format 0_1 ​​or DCI format 0_2. For example, if the TCI state indication information indicates one uplink TCI state or one joint TCI state, the SRS resource set associated with the one uplink TCI state or one joint TCI state is indicated by an SRS resource set indicator field or an SRS request field in DCI format 0_1 ​​or DCI format 0_2. DCI format 0_1 ​​or DCI format 0_2 is located within the action time of one uplink TCI state or one joint TCI state.

[0069] In some embodiments, the second DCI format may be DCI format 1_1 or DCI format 1_2.

[0070] For example, the SRS resource set associated with the TCI state is indicated by the SRS request field in DCI format 1_1 or DCI format 1_2.

[0071] In some embodiments, when the second DCI format indicates an SRS resource set associated with a TCI state, it schedules transmission of uplink data and is referred to as DCI format 0_1 / 0_2 with UL allocation, or when the second DCI format indicates an SRS resource set associated with a TCI state, it does not schedule transmission of uplink data and is referred to as DCI format 0_1 / 0_2 without UL allocation. In other words, the second DCI format may reuse a DCI for scheduling uplink data or may be a DCI that specifically indicates an SRS resource set associated with a TCI state.

[0072] In some embodiments, the SRS resource set associated with the TCI state is determined based on a reference signal, for example, the SRS resource set associated with the TCI state is determined based on a reference signal in the uplink TCI state or an associated TCI state, or the SRS resource set associated with the TCI state is determined based on a reference signal in PUCCH spatial relation info.

[0073] In some embodiments, the SRS resource set associated with the TCI state is determined based on an indication of a first DCI format, which may be DCI format 1_1 or DCI format 1_2.

[0074] For example, an SRS resource set associated with a TCI state is indicated by an unused field in DCI format 1_1 or DCI format 1_2, and / or an SRS resource set associated with a TCI state is indicated by a new field in DCI format 1_1 or DCI format 1_2, and / or an SRS resource set associated with a TCI state is indicated by a TCI field in DCI format 1_1 or DCI format 1_2.

[0075] In some embodiments, the methods for indicating the SRS resource set associated with a TCI state may be used in combination. For example, the SRS resource set associated with a TCI state may be jointly indicated by a first DCI format and a second DCI format. For example, the SRS resource set may be jointly indicated by at least one of the SRS resource set indicator field, the SRS request field, and the PUCCH resource indication field of the second DCI format, and the TCI field, the unused field, and the new field of the first DCI format. For example, when the SRS resource set associated with a TCI state is indicated by a TCI field of DCI format 1_1 or DCI format 1_2, the SRS resource set associated with the TCI state determined based on at least one of the SRS resource set indicator field, the SRS request field, and the PUCCH resource indication field is the same as the SRS resource set associated with the TCI state indicated by the TCI field.

[0076] In some embodiments, the associated SRS resource set may be determined based on at least one of a predetermined SRS resource set among a plurality of SRS resource sets, an indication of the second DCI format, or a reference signal.

[0077] For example, if a second DCI format is received before determining an SRS resource set associated with a TCI state, the SRS resource set associated with the TCI state is determined based on the SRS resource set indicator field or the SRS request field in the last received second DCI format. If the second DCI format is not received before determining an SRS resource set associated with a TCI state, the SRS resource set associated with the TCI state is the first SRS resource set of the multiple SRS resource sets.

[0078] In some embodiments, the SRS resource set associated with the TCI state may be determined based on at least one of an indication of the second DCI format, a reference signal, or a first DCI format.

[0079] Also, other ways of jointly determining the SRS resource set associated with the TCI state are not described here.

[0080] The following describes the transmission of the uplink signal in step 303.

[0081] In some embodiments, after determining an SRS resource set associated with a TCI state among multiple SRS resource sets, the terminal device needs to further determine parameters associated with the SRS resource set associated with the TCI state and / or parameters associated with the TCI state.

[0082] In some embodiments, the parameter associated with the SRS resource set associated with the TCI state includes at least one of an SRS resource indicator (SRI), a precoding matrix indicator (PMI), a number of layers, a number of antennas, an antenna index, or a power control parameter. In some embodiments, the parameter associated with the TCI state includes a power control parameter.

[0083] In some embodiments, the power control parameters include at least one of a target received power (P0), a path loss compensation factor (alpha), a path loss reference signal (PL-RS), and a closed loop index.

[0084] The following is an exemplary description of a terminal device transmitting an uplink signal using parameters related to an SRS resource set associated with a TCI state or parameters related to a TCI state.

[0085] FIG. 4 is a schematic diagram of an example of transmission of an uplink signal by a terminal device according to an embodiment of the present invention.

[0086] As shown in Figure 4, taking a PUSCH based on a Type 1 configured grant as an example, the network device configures a first SRS resource set (1st SRS resource set) corresponding to a first TRP 101 for the terminal device 103, and configures a second SRS resource set (2nd SRS resource set) corresponding to a second TRP 102 for the terminal device 103.

[0087] In some embodiments, in the RRC configuration of the PUSCH based on the Type 1 configured grant, the SRI, PMI, number of layers, number of antennas, antenna index, and power control parameters associated with the first SRS resource set and the second SRS resource set are independent. For example, the associated SRI, PMI, number of layers, number of antennas, antenna index, and power control parameters are configured for the first SRS resource set and the second SRS resource set, respectively.

[0088] For example, in a particular configuration process, the SRI is indicated by the "srs-ResourceIndicator" field, the PMI and the number of layers are indicated by the "precodingAndNumberOfLayers" field, the target received power (P0) and path loss compensation factor (alpha) are indicated by the "p0-PUSCH-Alpha" field, the closed loop index is indicated by the "powerControlLoopToUse" field, and the path loss reference signal (PL-RS) is indicated by the "pathlossReferenceIndex" field.

[0089] For example, the parameters configured for the 1st SRS resource set are: srs-ResourceIndicator, precodingAndNumberOfLayers, p0-PUSCH-Alpha, powerControlLoopToUse, It is indicated by the information of pathlossReferenceIndex.

[0090] The parameters configured for the second SRS resource set are: srs-ResourceIndicator2-r17, precodingAndNumberOfLayers2-r17, p0-PUSCH-Alpha2-r17, powerControlLoopToUse2-r17, It is indicated by the information in pathlossReferenceIndex2-r17.

[0091] In some embodiments, the terminal device determines parameters associated with different SRS resource sets based on the RRC configuration. Furthermore, the terminal device determines that the PUSCH based on the Type 1 configured grant is associated with the first SRS resource set (1st SRS resource set) according to the above aspect. As a result, the terminal device transmits the PUSCH of the Type 1 configured grant using the above parameters associated with the first SRS resource set (1st SRS resource set).

[0092] In some embodiments, when the terminal device 103 determines different SRS resource sets according to the above manner, the terminal device transmits the PUSCH using the first parameter and the second parameter.

[0093] For example, the first parameter is determined based on a specific SRS resource set. The first parameter includes at least one of an SRI, a PMI, and the number of layers. The second parameter is determined based on one uplink TCI state or a joint TCI state indicated by DCI format 1_1 or DCI format 1_2. The second parameter includes a power control parameter.

[0094] Still, a PUSCH based on a Type 1 configured grant will be described as an example. The terminal device uses the SRI, PMI, and number of layers associated with the first SRS resource set (1st SRS resource set), i.e., the first parameters. The related schemes are as described above. In addition, the TCI field of DCI format 1_1 or DCI format 1_2 indicates one uplink TCI state or a joint TCI state, and the uplink TCI state or the joint TCI state includes or is associated with at least one of a path loss reference signal (PL-RS), a target received power (P0), a path loss compensation factor (alpha), and a closed loop index (closedLoopIndex). This allows the terminal device to determine a power control parameter, i.e., a second parameter, based on the TCI state. The terminal device determines the first parameter and the second parameter and transmits a PUSCH based on the Type 1 configured grant based on the first parameter and the second parameter.

[0095] The following is an exemplary description of different TCI indication cases.

[0096] In some embodiments, if the number of uplink TCI states (or joint TCI states) indicated by the TCI field is one, the SRS resource set is determined according to the above aspects.

[0097] For example, when the TCI state indication information indicates one uplink TCI state or one joint TCI state, among the multiple SRS resource sets, the SRS resource set associated with the one uplink TCI state or one joint TCI state is determined according to the above aspect. For example, before the TCI state indication information indicates one uplink TCI state or one joint TCI state, the TCI state indication information indicates two uplink TCI states or two joint TCI states.

[0098] An exemplary description will be given with reference to Fig. 5. Fig. 5 is a schematic diagram of an example of determining associated SRS resource sets according to an embodiment of the present invention.

[0099] For example, the TCI field of the first DCI format indicates two uplink TCI states at time T1, and after a certain period of time, for example, at time T2, the TCI field indicates one uplink TCI state, that is, after the TCI field indicates one uplink TCI state, the terminal device needs to determine the SRS resource set associated with the one uplink TCI state.

[0100] As shown in Figure 5, after the first DCI format indicates a TCI state, the action time of the indicated TCI state begins a certain period after the DCI is transmitted. For example, time points T1 and T2 are the times when the TCI state is indicated, and β is the action time of the TCI state. As shown in Figure 5, T1 + α is the action start time of the two indicated uplink TCI states. T2 + α is the action start time of the one indicated uplink TCI state.

[0101] Therefore, the terminal device determines an SRS resource set associated with one uplink TCI state according to the above aspect within the action time β starting from T2+α.

[0102] In some embodiments, the TCI indicated by the first DCI format may indicate a downlink TCI and an uplink TCI, respectively (i.e., separate DL / UL TCI). For example, the value of the "unifiedtci-StateType" field in the RRC configuration is SeparateULDL. In some embodiments, the TCI indicated by the first DCI format may indicate a joint downlink TCI and an uplink TCI (i.e., joint DL / UL TCI). For example, the value of the "unifiedtci-StateType" field in the RRC configuration is JointULDL.

[0103] The following exemplarily describes how to determine an SRS resource set associated with a TCI state with reference to various schemes.

[0104] In some embodiments, the SRS resource set associated with the TCI state is the first SRS resource set of the plurality of SRS resource sets.

[0105] For example, if two SRS resource sets are configured for a terminal device and the number of uplink TCI states indicated by the TCI field is one (similar to the above embodiment), the PUSCH based on the Type 1 configured grant is considered to be associated with the first SRS resource set.

[0106] For example, when DCI format 0_0 schedules PUSCH transmission based on a dynamic grant or activates PUSCH transmission based on a Type 2 configured grant, the PUSCH is considered to be associated with the first SRS resource set. This is because, as a fallback DCI, DCI format 0_0 needs to include as few fields as possible, for example, it needs to not include a field indicating the SRS resource set associated with the TCI state, and therefore uses a predetermined SRS resource set, i.e., the default associated SRS resource set is the first SRS resource set among multiple SRS resource sets.

[0107] In some embodiments, the SRS resource set indicator field of DCI format 0_1 ​​or DCI format 0_2 indicates only one SRS resource set, i.e., does not indicate multiple SRS resource sets, for example, the TCI field indicates one uplink TCI state, and during the operation time of one uplink TCI state, the SRS resource set indicator field indicates only one SRS resource set.

[0108] Table 1 outlines the usage of the SRS resource set indicator field. When two SRS resource sets are configured for a terminal device, the bit width of the SRS resource set indicator field is 2 bits, and DCI format 0_1 ​​or DCI format 0_2 includes two SRS resource set indicator (SRI) fields (e.g., referred to as an "SRS resource indicator field" and a "second SRS resource indicator field," respectively) and two precoding fields (e.g., referred to as a "precoding information and layer number field" and a "second precoding information field," respectively). The values ​​of the two bits of the SRS resource set indicator field are "00" or "01." "00" (corresponding to a value of 0) indicates the first SRS resource set, and "01" (corresponding to a value of 1) indicates the second SRS resource set. "10" and "11" are reserved, i.e., not used. Table 1 SRS Resource Set Instructions

[0109] [Table 1] The corresponding English notation is as follows: Table 1 SRS resource set indication

[0110] [Table 2] In some embodiments, the SRS resource set is indicated by the SRS resource set indicator field of DCI format 0_1 ​​or DCI format 0_2. For example, if two SRS resource sets are configured for a terminal device and the number of uplink TCI states indicated by the TCI field is one, the PUSCH based on the Type 1 configured grant is associated with the SRS resource set indicated by the SRS resource set indicator field of the last received DCI format 0_1 ​​or DCI format 0_2. The PUSCH based on the Type 1 configured grant is located within the same TCI action time as the last received DCI format 0_1 ​​or DCI format 0_2.

[0111] An exemplary description will be given with reference to Fig. 6. Fig. 6 is a schematic diagram of another example of determining associated SRS resource sets according to an embodiment of the present invention.

[0112] When DCI format 0_1 ​​is a DCI indicating an SRS resource set that the terminal device last received from the Type 1 configured grant resource one time interval T' ago, PUSCH transmission on the Type 1 configured grant resource is associated with the SRS resource set indicated by DCI format 0_1. Here, time interval T' may include, for example, a DCI processing time and a PUSCH preparation time required for the terminal device. The PUSCH on DCI format 0_1 ​​and the Type 1 configured grant resource is located within the same TCI action time.

[0113] In some embodiments, if the terminal device receives DCI format 0_1 ​​or DCI format 0_2 before determining the SRS resource set, the SRS resource set is indicated by the SRS resource set indicator field of the last received DCI format 0_1 ​​or DCI format 0_2. If the terminal device does not receive DCI format 0_1 ​​or DCI format 0_2 before determining the SRS resource set, the SRS resource set is the initial SRS resource set.

[0114] In some embodiments, DCI format 0_1 ​​or DCI format 0_2 indicating an SRS resource set may not schedule uplink data transmission and may be used only to indicate an SRS resource set.

[0115] An exemplary description will be given with reference to Fig. 7. Fig. 7 is a schematic diagram of an example of downlink / uplink allocation with or without scheduling according to an embodiment of the present invention.

[0116] For example, if two uplink TCI states are already indicated by the TCI field of DCI format 1_1 or DCI format 1_2 for a terminal device, and one uplink TCI state is indicated by the TCI field of DCI format 1_1 or DCI format 1_2, the terminal device knows the beam direction (TCI state) but does not know which SRS resource set (or TRP) this TCI state is associated with. Even though there is no uplink data that the terminal device needs to transmit to indicate the SRS resource set, the network device can still transmit DCI format 0_1 ​​or DCI format 0_2 and use its SRS resource set indicator field to indicate which SRS resource set the TCI state is associated with. For example, the network device indicates a second SRS resource set, and the terminal device can know that a PUSCH based on the uplink TCI state has been transmitted to the second TRP 102.

[0117] In some embodiments, the SRS resource set is an SRS resource set associated with an uplink source reference signal corresponding to an uplink TCI state.

[0118] An exemplary description will be given with reference to Fig. 8. Fig. 8 is a schematic diagram of an example of determining an associated SRS resource set based on an uplink source reference signal according to an embodiment of the present invention.

[0119] For example, a Type 1 configured grant is associated with two SRS resource sets, the number of uplink TCI states indicated by the TCI field of DCI format 1_1 is one, the uplink source reference signal corresponding to the indicated uplink TCI state is SRS, and the SRS resource is identified by "SRS-ResourceId." Since the terminal device knows the "SRS-ResourceId" of the SRS resource in the SRS resource set, it can determine which SRS resource set the uplink source reference signal belongs to based on the "SRS-ResourceId" (i.e., it determines one associated SRS resource set based on the uplink source reference signal corresponding to the uplink TCI state).

[0120] In some embodiments, the SRS resource set is the SRS resource set associated with the reference signal in the PUCCH spatial relation info.

[0121] For example, the TCI field indicates one uplink TCI state, and the PUCCH resource indicator field of the DCI indicates one PUCCH resource for feeding back ACK / NACK. For the PUCCH resource, the RRC IE (Information Element) "PUCCH-SpatialRelationInfo" indicates that the reference signal for determining the PUCCH spatial relationship is SRS, and the SRS resource is identified by "SRS-ResourceId". The terminal device can determine which SRS resource set the SRS belongs to based on "PUCCH" (i.e., determine one associated SRS resource set based on the reference signal in the PUCCH spatial relationship information).

[0122] In some embodiments, the PUCCH is the last PUCCH transmitted before the SRS resource set is determined. For example, a PUSCH based on a Type 1 configured grant determines an associated SRS resource set based on the previous last transmitted PUCCH, and the SRS resource set is the SRS resource set associated with the reference signal in the PUCCH spatial relationship information.

[0123] In some embodiments, the PUCCH resource indicator field indicates only a PUCCH resource for which one spatial relationship information is activated, i.e., does not indicate a PUCCH resource for which multiple spatial relationship information is activated. For example, the TCI field indicates one uplink TCI state, and within the duration of the one uplink TCI state, the PUCCH resource indication field indicates only a PUCCH resource for which one spatial relationship information is activated. In some embodiments, when the terminal device has PUCCH resources for which two spatial relationship information are activated, the SRS resource set or the PUCCH spatial relationship information is determined according to the above method.

[0124] In some embodiments, the terminal device is configured with multiple SRS resource sets, and the SRS resource sets are indicated by the TCI field of DCI format 1_1 or DCI format 1_2.

[0125] An exemplary description will be given with reference to Fig. 9. Fig. 9 is a schematic diagram of an example of indicating associated SRS resource sets according to an embodiment of the present invention.

[0126] For the TCI field, one TCI codepoint indicates M downlink TCI states and N uplink TCI states, i.e., one column in FIG. 9. Two ULs correspond to two SRS resource sets (or two TRPs), respectively. The DCI indicates N=1 uplink TCI states and indicates the SRS resource set associated with the TCI state. For example, when the DCI indicates column i, it indicates the second SRS resource set, and when the DCI indicates column j, it indicates the first SRS resource set, i.e., column i and column j can be distinguished.

[0127] Preferably, the two DLs correspond to two CSI-RS resource sets (or two TRPs), respectively, and the DCI may further indicate which CSI-RS resource sets the M=1 downlink TCI states are associated with.

[0128] FIG. 10 is a schematic diagram of an example of activating / deactivating a unified TCI state by a MAC CE according to an embodiment of the present invention.

[0129] A MAC CE for activating / deactivating a unified TCI state via an mTRP is exemplarily described. After activation by the MAC CE, the established mapping relationship between the TCI codepoint and the TCI state includes SRS resource set information, and the SRS resource set can be obtained through the TCI codepoint. The MAC CE includes at least one of fields Pi, Di, Ui, Wi, and Vi, where i=1, 2, ..., 8.

[0130] Pi indicates whether the i-th TCI codepoint corresponds to two TCI states (uplink and downlink TCI states) or one TCI state (uplink or downlink TCI state). When Pi is 1, it indicates that it corresponds to the uplink TCI state and the downlink TCI state, for example, (M=2, N=2), (M=1, N=2), (M=2, N=1), or (M=1, N=1). When Pi is 0, it indicates that it corresponds to the uplink TCI state or the downlink TCI state, for example, (M=0, N=2), (M=2, N=0), (M=0, N=1), or (M=1, N=0).

[0131] Di indicates whether the number of downlink TCI states (if any) corresponding to the ith TCI codepoint is 1 or 2. When Di is 1, it indicates that two downlink TCI states are supported, e.g., (M=2, N=2), (M=2, N=1), or (M=2, N=0). When Di is 0, it indicates that one downlink TCI state is supported, e.g., (M=1, N=2), (M=1, N=1), or (M=1, N=0).

[0132] Ui indicates whether the number of uplink TCI states (if any) corresponding to the i-th TCI codepoint is 1 or 2. When Ui is 1, it indicates that two uplink TCI states are supported, e.g., (M=0, N=2), (M=1, N=2), or (M=2, N=2). When Ui is 0, it indicates that one uplink TCI state is supported, e.g., (M=0, N=1), (M=1, N=1), or (M=2, N=1).

[0133] Wi indicates which CSI-RS resource set a single downlink TCI state (if any) corresponding to the ith TCI codepoint is associated with. When Wi is 1, it indicates that it corresponds to the second CSI-RS resource set. When Wi is 0, it indicates that it corresponds to the first CSI-RS resource set.

[0134] Vi indicates which SRS resource set the single uplink TCI state (if any) corresponding to the ith TCI codepoint is associated with. When Vi is 1, it indicates that it corresponds to the second SRS resource set. When Vi is 0, it indicates that it corresponds to the first SRS resource set.

[0135] If the i-th TCI codepoint corresponds to two uplink (downlink) TCI states, the k-th uplink (downlink) TCI state corresponds to the k-th SRS (CSI-RS) resource set, where k=1, 2. When D / U is 1, it indicates a downlink TCI state or a joint TCI state. When D / U is 0, it indicates an uplink TCI state. Preferably, the MAC CE includes at least one of a field service cell ID, a downlink BWP (bandwidth part) ID, and an uplink BWP ID.

[0136] In some embodiments, the TCI field of DCI format 1_1 or DCI format 1_2 does not indicate an SRS resource set. For example, the TCI field indicates an uplink TCI state but does not indicate which SRS resource set the TCI state is associated with. In this case, the SRS resource set may be determined based on at least one of a predetermined SRS resource set among a plurality of SRS resource sets, an indication of a second DCI format, or a reference signal.

[0137] FIG. 11 is a schematic diagram of another example of activating / deactivating a unified TCI state by a MAC CE according to an embodiment of the present invention.

[0138] An exemplary description will be given with reference to Figure 11. A MAC CE for activating / deactivating a unified TCI state by an mTRP includes at least one of fields Pi, Di, and Ui, where i = 1, 2, ..., 8. The usage of fields Pi, Di, and Ui is the same as in Figure 10, so description thereof will be omitted. After activation by the MAC CE, the established mapping relationship between the TCI codepoint and the TCI state does not include SRS resource set information, and the TCI codepoint does not indicate an SRS resource set. In this case, the SRS resource set may be determined by at least one of the following methods: based on a predetermined SRS resource set among multiple SRS resource sets; based on an indication of a second DCI format; or based on a reference signal.

[0139] In some embodiments, the SRS resource set is determined by an unused field in DCI format 1_1 or DCI format 1_2. For example, DCI format 1_1 or DCI format 1_2 is a DCI format that does not schedule downlink data, i.e., DCI format 1_1 / 1_2 without DL assignment. In such a DCI format, a configured scheduling RNTI (CS-RNTI) is used to scramble the CRC of the DCI, and some fields of the DCI are set to specific values ​​to distinguish it from a DCI for scheduling downlink data. For example, the redundancy version (RV) field and the MCS field are all set to '1', the NDI field is set to 0, and the frequency domain resource assignment (FDRA) field is set to all '0' or all '1' according to different frequency domain resource allocation types. Because downlink data is not scheduled, some fields in the DCI, such as the HARQ process number field, are unused. Therefore, the HARQ process number field can be used to indicate the first SRS resource set or the second SRS resource set.

[0140] In some embodiments, the SRS resource set determined based on at least one of the SRS resource set indicator field, the SRS request field, and the PUCCH resource indication field is the same as the SRS resource set indicated or determined based on the TCI field.

[0141] In some embodiments, when the TCI field of DCI format 1_1 or DCI format 1_2 indicates one uplink TCI state, the terminal device determines one SRS resource set, and transmits all PUSCH repetitions, where all PUSCH repetitions are associated with the SRS resource set.

[0142] For example, when two SRS resource sets are configured for a terminal device and the TCI field of DCI format 1_1 or DCI format 1_2 indicates two uplink TCI states, for PUSCH transmission based on PUSCH repetition, the terminal device determines the first PUSCH repetition and the second PUSCH repetition associated with the first SRS resource set and the second SRS resource set, respectively. When the TCI field of DCI format 1_1 or DCI format 1_2 indicates one uplink TCI state, the terminal device determines the SRS resource set to be the first SRS resource set, and transmits the first PUSCH repetition and the second PUSCH repetition, where it is assumed that all PUSCH repetitions are associated with the first SRS resource set. The PUSCH repetition includes PUSCH repetition Type A and Type B, and may refer to TS 38.214 V17.1.0, but the present invention is not limited thereto.

[0143] FIG. 12 is a schematic diagram of an example of PUSCH repeated transmission according to an embodiment of the present invention.

[0144] Taking the Type 1 configured grant as an example, when two SRS resource sets are configured for a terminal device, the first SRS resource set corresponds to the first TRP, and the second SRS resource set corresponds to the second TRP. Figure 12 shows the mapping relationship between different SRS resource sets and PUSCH repetitions. When the uplink TCI state indicated by the TCI field is TCI1' or is changed from TCI1 and TCI2 to TCI1', the terminal device determines that TCI1' is associated with the first SRS resource set, and performs transmission with all PUSCH repetitions. The uplink beam direction is determined based on TCI1', all PUSCH repetitions are associated with the first SRS resource set, and the terminal device transmits PUSCHs of the Type 1 configured grant using the first and second parameters. Here, the first parameter is associated with a first SRS resource set and includes at least one of "srs-ResourceIndicator" and "precodingAndNumberOfLayers." The second parameter is determined based on TCI1' and includes at least one of a target received power, a path loss compensation factor, a path loss reference signal, and a closed-loop index. When one SRS resource set is associated with one TCI state, the uplink PUSCH is associated with one SRS resource set, and the PUSCH is associated with one uplink TCI state.

[0145] In some embodiments, when the TCI field of DCI format 1_1 or DCI format 1_2 indicates one uplink TCI state, the terminal device determines one SRS resource set. The terminal device transmits some PUSCH repetitions, where some PUSCH repetitions are associated with the determined SRS resource set. For example, when two SRS resource sets are configured for the terminal device and the TCI field of DCI format 1_1 or DCI format 1_2 indicates two uplink TCI states, for PUSCH transmission based on PUSCH repetitions, the terminal device determines first and second PUSCH repetitions associated with the first and second SRS resource sets, respectively. If the TCI field of DCI format 1_1 or DCI format 1_2 indicates one uplink TCI state, it is assumed that the terminal device determines that the SRS resource set is the first SRS resource set, and the terminal device transmits only the first PUSCH repetition, where the first PUSCH repetition is associated with the first SRS resource set.

[0146] An exemplary description will be given with reference to Fig. 13. Fig. 13 is a schematic diagram of another example of PUSCH repetitive transmission according to an embodiment of the present invention.

[0147] Description of the same content as in Fig. 12 will be omitted. The difference from Fig. 12 is that the terminal device performs transmission only in the first PUSCH repetition associated with the first SRS resource set.

[0148] In some embodiments, when the TCI field of DCI format 1_1 or DCI format 1_2 indicates one uplink TCI state, the terminal device determines one SRS resource set associated with the one uplink TCI state and transmits only the SRS of the associated SRS resource set.

[0149] For example, two SRS resource sets are configured for a terminal device, and the terminal device transmits two periodic SRSs (or semi-persistent SRSs), where the two SRSs belong to the two SRS resource sets, respectively. If the TCI field of DCI format 1_1 or DCI format 1_2 indicates two uplink TCI states, the terminal device transmits two SRSs. If the TCI field of DCI format 1_1 or DCI format 1_2 indicates one uplink TCI state, it is assumed that the terminal device determines that the SRS resource set is the first SRS resource set, and the terminal device transmits only the SRS that belongs to the first SRS resource set and does not transmit the SRS that belongs to the second SRS resource set. The above SRSs may be SRSs for codebook-based uplink transmission, non-codebook-based uplink transmission, or antenna switching. The reason for this is that when mTRP is switched to sTRP, the terminal device does not need to transmit SRS for TRPs where no data transmission is occurring, i.e., it does not need to provide channel measurements for such TRPs, thereby reducing the overhead of uplink reference signals and avoiding interference with other devices.

[0150] The above-described embodiments are merely illustrative of the present invention, and the present invention is not limited thereto. Appropriate modifications may be made based on the above-described embodiments. For example, each of the above-described embodiments may be used alone, or one or more of the above-described embodiments may be used in combination.

[0151] According to this embodiment, a terminal device receives TCI state indication information, the TCI state indication information indicating at least one TCI state, determines an SRS resource set associated with the TCI state among a plurality of SRS resource sets, and transmits an uplink signal using parameters associated with the SRS resource set associated with the TCI state and / or parameters associated with the TCI state, thereby avoiding ambiguity regarding which uplink transmission parameters the terminal device should use, and ensuring throughput or reliability of uplink transmission by the terminal device using appropriate uplink transmission parameters to perform uplink transmission.

[0152] <Example 2> An embodiment of the present invention provides a signal receiving method. The embodiment of the present invention may be implemented in combination with embodiment 1, or may be implemented alone. Descriptions of the same content as embodiment 1 will be omitted.

[0153] 14 is a schematic diagram of an example of a signal receiving method according to an embodiment of the present invention. As shown in FIG. 14, the method includes the following steps:

[0154] Step 1401: Configure multiple SRS resource sets.

[0155] Step 1402: Send TCI state indication information, where the TCI state indication information indicates at least one TCI state, and at least one SRS resource set among the plurality of SRS resource sets is associated with the TCI state.

[0156] Step 1403: Receive an uplink signal transmitted by a terminal device, where the terminal device transmits the uplink signal using a parameter related to an SRS resource set associated with the TCI state and / or a parameter related to the TCI state.

[0157] It should be noted that the above-mentioned Figure 14 merely illustrates an example of the present invention, and the present invention is not limited thereto. For example, the execution order of various steps may be appropriately adjusted, some other steps may be added, or some steps may be removed. Those skilled in the art can make appropriate modifications based on the above content, and are not limited to the description of the above-mentioned Figure 14.

[0158] In some embodiments, the TCI status indication information is carried by a TCI field in the first DCI format.

[0159] In some embodiments, the TCI status indication information indicates an uplink TCI status and / or a downlink TCI status, or the TCI status indication information indicates a joint TCI status to indicate an uplink TCI status and a downlink TCI status.

[0160] In some embodiments, if the TCI state indication information indicates an uplink TCI state or a joint TCI state, the terminal device determines an SRS resource set associated with the uplink TCI state or the joint TCI state among a plurality of SRS resource sets.

[0161] In some embodiments, the TCI state indication indicates two uplink TCI states or two joint TCI states before the TCI state indication indicates an uplink TCI state or a joint TCI state.

[0162] In some embodiments, the TCI status indication information is 1 joint TCI state, Two joint TCI states, Two downlink TCI states and two uplink TCI states; one downlink TCI state and one uplink TCI state; Two downlink TCI states and one uplink TCI state; Two uplink TCI states and one downlink TCI state; Two downlink TCI states, Two uplink TCI states, One downlink TCI state, or Indicates at least one TCI state of one uplink TCI state.

[0163] In some embodiments, the plurality of SRS resource sets may include: Physical Uplink Shared Channel (PUSCH) based on dynamic grant; PUSCH based on Type 1 configured grant, PUSCH based on Type 2 configured grant, Periodic SRS, Semi-persistent Sounding Reference Signal (SRS), Aperiodic SRS, or An SRS resource set associated with at least one signal / channel of the Physical Uplink Control Channel (PUCCH).

[0164] In some embodiments, the transmission of PUSCH and / or PUCCH based on a dynamic grant is a transmission of PUSCH and / or PUCCH that schedules multiple transmission / reception points (mTRPs) based on a single DCI (sDCI).

[0165] The above-described embodiments are merely illustrative of the present invention, and the present invention is not limited thereto. Appropriate modifications may be made based on the above-described embodiments. For example, each of the above-described embodiments may be used alone, or one or more of the above-described embodiments may be used in combination.

[0166] According to this embodiment, a terminal device receives TCI state indication information, the TCI state indication information indicating at least one TCI state, determines an SRS resource set associated with the TCI state among a plurality of SRS resource sets, and transmits an uplink signal using parameters associated with the SRS resource set associated with the TCI state and / or parameters associated with the TCI state, thereby avoiding ambiguity regarding which uplink transmission parameters the terminal device should use, and ensuring throughput or reliability of uplink transmission by the terminal device using appropriate uplink transmission parameters to perform uplink transmission.

[0167] Example 3 An embodiment of the present invention provides a signal transmission device. The device may be, for example, a terminal device, or one or more elements or components configured in the terminal device. Descriptions of the same content as in the first and second embodiments will be omitted.

[0168] FIG. 15 is a schematic diagram of an example of a signal transmission device according to an embodiment of the present invention.

[0169] As shown in FIG. 15, a signal transmitting device 1500 includes the following units.

[0170] The receiving unit 1501 receives TCI status indication information, which indicates at least one TCI status.

[0171] The determining unit 1502 determines an SRS resource set associated with the TCI state from among the configured plurality of SRS resource sets.

[0172] The transmitter 1503 performs uplink transmission using parameters associated with the SRS resource set associated with the TCI state and / or parameters associated with the TCI state.

[0173] In some embodiments, the TCI status indication information is carried by a TCI field in the first DCI format.

[0174] In some embodiments, the TCI status indication information indicates an uplink TCI status and / or a downlink TCI status, or the TCI status indication information indicates a joint TCI status to indicate an uplink TCI status and a downlink TCI status.

[0175] In some embodiments, if the TCI state indication information indicates an uplink TCI state or a joint TCI state, the determiner 1502 determines an SRS resource set associated with the uplink TCI state or the joint TCI state among the plurality of SRS resource sets.

[0176] In some embodiments, the TCI state indication indicates two uplink TCI states or two joint TCI states before the TCI state indication indicates an uplink TCI state or a joint TCI state.

[0177] In some embodiments, the TCI status indication information is 1 joint TCI state, Two joint TCI states, Two downlink TCI states and two uplink TCI states; one downlink TCI state and one uplink TCI state; Two downlink TCI states and one uplink TCI state; Two uplink TCI states and one downlink TCI state; Two downlink TCI states, Two uplink TCI states, One downlink TCI state, or Indicates at least one TCI state of one uplink TCI state.

[0178] In some embodiments, the determining unit 1502 determining the SRS resource set associated with the TCI state comprises: determining based on a predetermined SRS resource set of a plurality of SRS resource sets; making a decision based on an indication of the second DCI format; making a decision based on a reference signal; or determining based on an indication of the first DCI format.

[0179] In some embodiments, the SRS resource set associated with the TCI state is the first SRS resource set of the plurality of SRS resource sets.

[0180] In some embodiments, the SRS resource set associated with the TCI state is indicated by an SRS resource set indicator field in the second DCI format, or the SRS resource set associated with the TCI state is indicated by an SRS request field in the second DCI format.

[0181] In some embodiments, when the TCI state indication information indicates one uplink TCI state or one joint TCI state, the SRS resource set associated with the TCI state is indicated by the SRS resource set indicator field or the SRS request field.

[0182] In some embodiments, if the second DCI format indicates an SRS resource set associated with the TCI state, the transmission of uplink data is scheduled, or if the second DCI format indicates an SRS resource set associated with the TCI state, the transmission of uplink data is not scheduled.

[0183] In some embodiments, the decision unit 1502 makes the decision based on a reference signal in an uplink TCI state or a joint TCI state, or the decision unit 1502 makes the decision based on a reference signal in PUCCH spatial relation info.

[0184] In some embodiments, the SRS resource set associated with the TCI state is indicated by a TCI field in the first DCI format, and / or is indicated by an unused field in the first DCI format, and / or is indicated by a new field in the first DCI format.

[0185] In some embodiments, if a second DCI format is received before the determiner 1502 determines an SRS resource set associated with the TCI state, the determiner 1502 determines the SRS resource set associated with the TCI state based on the SRS resource set indicator field or the SRS request field of the last received second DCI format. If a second DCI format is not received before the determiner 1502 determines an SRS resource set associated with the TCI state, the determiner 1502 determines a first SRS resource set of the multiple SRS resource sets as the SRS resource set associated with the TCI state.

[0186] In some embodiments, the plurality of SRS resource sets may include: Physical Uplink Shared Channel (PUSCH) based on dynamic grant; PUSCH based on Type 1 configured grant, PUSCH based on Type 2 configured grant, Periodic SRS, Semi-persistent Sounding Reference Signal (SRS), Aperiodic SRS, or An SRS resource set associated with at least one signal / channel of the Physical Uplink Control Channel (PUCCH).

[0187] In some embodiments, the transmission of PUSCH and / or PUCCH based on a dynamic grant is a transmission of PUSCH and / or PUCCH that schedules multiple transmission / reception points (mTRPs) based on a single DCI (sDCI).

[0188] In some embodiments, if the TCI state indication information indicates an uplink TCI state or a joint TCI state, the transmitter 1503 transmits all PUSCH repetitions, where all PUSCH repetitions are associated with an SRS resource set associated with the TCI state and / or the uplink TCI state or the joint TCI state. Alternatively, if the TCI state indication information indicates an uplink TCI state or a joint TCI state, the transmitter 1503 transmits only a portion of PUSCH repetitions, where some PUSCH repetitions are associated with an SRS resource set associated with the TCI state and / or the uplink TCI state or the joint TCI state.

[0189] In some embodiments, the parameters associated with the SRS resource set associated with the TCI state include at least one of an SRS resource indicator (SRI), a precoding matrix indicator (PMI), a number of layers, a number of antennas, an antenna index, or a power control parameter. The parameters associated with the TCI state include a power control parameter.

[0190] In some embodiments, the first DCI format indicates TCI status indication information.

[0191] The second DCI format is Physical uplink shared channel (PUSCH) transmission based on dynamic grant; PUSCH transmission based on Type 2 configured grant, Physical Uplink Control Channel (PUCCH) transmission, Semi-persistent Sounding Reference Signal (SRS) transmission, or At least one of the aperiodic SRS transmissions is indicated or activated.

[0192] The above-described embodiments are merely examples of the present invention, and the present invention is not limited thereto. Appropriate modifications can be made based on the above-described embodiments. For example, each of the above-described embodiments can be used alone, or one or more of the above-described embodiments can be used in combination.

[0193] Although the above description is limited to the components or modules related to the present invention, the present invention is not limited thereto. The signal transmission device 1500 may further include other components or modules. For specific details of these components or modules, please refer to the related art.

[0194] 15 only exemplifies the connection relationships or signal directions between various components or modules, but it will be apparent to those skilled in the art that various related technologies such as bus connections can be used. The various components or modules described above may be implemented by hardware devices such as a processor, a memory, a transmitter, and a receiver, and the present invention is not limited thereto.

[0195] According to this embodiment, a terminal device receives TCI state indication information, the TCI state indication information indicating at least one TCI state, determines an SRS resource set associated with the TCI state among a plurality of SRS resource sets, and transmits an uplink signal using parameters associated with the SRS resource set associated with the TCI state and / or parameters associated with the TCI state, thereby avoiding ambiguity regarding which uplink transmission parameters the terminal device should use, and ensuring throughput or reliability of uplink transmission by the terminal device using appropriate uplink transmission parameters to perform uplink transmission.

[0196] Example 4 An embodiment of the present invention provides a signal receiving device. The device may be, for example, a network device, or one or more elements or components configured in the network device. Descriptions of the same content as in the first to third embodiments will be omitted.

[0197] 16 is a schematic diagram of an example of a signal receiving device according to an embodiment of the present invention. As shown in FIG. 16, a signal receiving device 1600 includes the following units.

[0198] The configuration unit 1601 configures a plurality of SRS resource sets.

[0199] The transmitter 1602 transmits the TCI status indication information, which indicates at least one TCI status.

[0200] The receiver 1603 receives an uplink signal transmitted by a terminal device, which transmits the uplink signal using parameters related to the SRS resource set associated with the TCI state and / or parameters related to the TCI state.

[0201] The above-described embodiments are merely examples of the present invention, and the present invention is not limited thereto. Appropriate modifications can be made based on the above-described embodiments. For example, each of the above-described embodiments can be used alone, or one or more of the above-described embodiments can be used in combination.

[0202] Although the above description is limited to the components or modules related to the present invention, the present invention is not limited thereto. The signal receiving device 1600 may further include other components or modules. For specific details of these components or modules, please refer to the related art.

[0203] Furthermore, for convenience of explanation, Figure 16 only exemplifies the connection relationships or signal directions between various components or modules, but it will be apparent to those skilled in the art that various related technologies such as bus connections can be used. The various components or modules described above may be implemented by hardware devices such as a processor, a memory, a transmitter, and a receiver, and the present invention is not limited thereto.

[0204] According to this embodiment, a terminal device receives TCI state indication information, the TCI state indication information indicating at least one TCI state, determines an SRS resource set associated with the TCI state among a plurality of SRS resource sets, and transmits an uplink signal using parameters associated with the SRS resource set associated with the TCI state and / or parameters associated with the TCI state, thereby avoiding ambiguity regarding which uplink transmission parameters the terminal device should use, and ensuring throughput or reliability of uplink transmission by the terminal device using appropriate uplink transmission parameters to perform uplink transmission.

[0205] <Example 5> The embodiment of the present invention further provides a communication system, and may refer to FIG. 1, and the description of the same contents as those in the first to fourth embodiments will be omitted.

[0206] In some embodiments, a communication system may include at least a network device and a terminal device.

[0207] The network device configures a plurality of SRS resource sets and transmits TCI status indication information.

[0208] The terminal device receives the TCI state indication information, which indicates at least one TCI state, determines an SRS resource set associated with the TCI state from the plurality of SRS resource sets, and performs uplink transmission using parameters associated with the SRS resource set associated with the TCI state and / or parameters associated with the TCI state.

[0209] An embodiment of the present invention further provides a network device, which may be, for example, a base station, but the present invention is not limited thereto and may be other network devices.

[0210] 17 is a schematic diagram of a network device according to an embodiment of the present invention. As shown in FIG. 17, the network device 1700 may include a processor 1710 (e.g., a central processing unit (CPU)) and a memory 1720, which is connected to the processor 1710. The memory 1720 may store various data and may further store an information processing program 1730, which is executed under the control of the processor 1710.

[0211] 17, the network device 1700 may further include a transceiver 1740 and an antenna 1750. The functions of the above components are similar to those of the prior art, and a description thereof will be omitted here. The network device 1700 does not need to include all the units shown in FIG. 17. The network device 1700 may further include units not shown in FIG. 17, and the prior art may be referred to.

[0212] The embodiment of the present invention further provides a terminal device, but the present invention is not limited thereto and may be other devices.

[0213] 18 is a schematic diagram of a terminal device according to an embodiment of the present invention. As shown in FIG. 18, terminal device 1800 may include a processor 1810 and a memory 1820, where memory 1820 stores data and programs and is connected to processor 1810. It should be noted that this diagram is illustrative, and other types of structures may be used to supplement or replace this structure to achieve communication or other functions.

[0214] For example, the processor 1810 may execute a program to realize the signal transmission method described in Example 1. For example, the processor 1810 may be configured to execute the following steps: receiving TCI state indication information, where the TCI state indication information indicates at least one TCI state; determining an SRS resource set associated with the TCI state among the plurality of SRS resource sets; and performing uplink transmission using parameters associated with the SRS resource set associated with the TCI state and / or parameters associated with the TCI state.

[0215] 18, the terminal device 1800 may further include a communication module 1830, an input unit 1840, a display 1850, a power supply 1860, and the like. Here, the functions of the above units are similar to those of the prior art, and therefore, description thereof will be omitted here. Note that the terminal device 1800 does not need to include all of the units shown in FIG. 18. The terminal device 1800 may further include units not shown in FIG. 18, and prior art may be referred to.

[0216] An embodiment of the present invention further provides a computer-readable program, which, when executed in a terminal device, causes the terminal device to perform the signal transmission method described in embodiment 1.

[0217] An embodiment of the present invention further provides a storage medium having a computer-readable program stored therein, the program causing a terminal device to perform the signal transmission method described in embodiment 1 when the program is executed.

[0218] An embodiment of the present invention further provides a computer-readable program, which, when executed in a network device, causes the network device to perform the signal receiving method described in embodiment 2.

[0219] An embodiment of the present invention further provides a storage medium having a computer-readable program stored therein, the program causing a network device to perform the signal receiving method described in embodiment 2 when the program is executed.

[0220] The above-described apparatus and method of the present invention may be realized by hardware or a combination of hardware and software. The present invention relates to a computer-readable program that, when executed by a logic unit, causes the logic unit to implement the above-described apparatus or components, or to implement the above-described various methods or steps. The present invention also relates to a storage medium for storing the above-described program, such as a hard disk, magnetic disk, optical disk, DVD, flash memory, etc.

[0221] Each processing method in each device described with reference to the embodiments of the present invention may be implemented by hardware, a software module executed by a processor, or a combination of both. For example, one or more of the functional block diagrams shown in the drawings, or one or more combinations of the functional block diagrams, may correspond to each software module in a computer program flow or each hardware module. These software modules may correspond to each step shown in the drawings. These hardware modules may be implemented by implementing these software modules in hardware, for example, using a field programmable gate array (FPGA).

[0222] The software module may be located in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, mobile hard disk, CD-ROM, or any other form of storage medium known to those skilled in the art. The storage medium may be connected to the processor so that the processor reads information from or writes information to the storage medium, or the storage medium may be a component of the processor. The processor and the storage medium may be located in an ASIC. The software module may be stored in the memory of the mobile terminal or in a memory card inserted into the mobile terminal. For example, if a device (e.g., a mobile terminal) uses a relatively large-capacity MEGA-SIM card or a large-capacity flash memory device, the software module may be stored in the MEGA-SIM card or the large-capacity flash memory device.

[0223] One or more functional blocks and / or one or more combinations of functional blocks in the functional block diagrams set forth in the figures may be implemented with a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, or any suitable combination thereof to perform the functions described herein. One or more functional blocks and / or one or more combinations of functional blocks in the functional block diagrams set forth in the figures may be implemented with, for example, a combination of computing devices, such as a combination of a DSP and a microprocessor, a combination of multiple microprocessors, one or more microprocessors in combination with a DSP communication, or any other configuration.

[0224] Although the present invention has been described above with reference to specific embodiments, the above description is merely illustrative and does not limit the scope of protection of the present invention. Various modifications and changes may be made to the present invention without departing from the spirit and principles of the present invention, and these modifications and changes are also within the scope of the present invention.

[0225] Furthermore, the following supplementary notes are disclosed regarding the embodiments including the above examples. (Appendix 1) A signal transmission method, comprising: configuring a plurality of SRS resource sets for a terminal device; receiving, by the terminal device, a TCI status indication, the TCI status indication indicating at least one TCI status; determining an SRS resource set associated with the TCI state from the plurality of SRS resource sets; transmitting an uplink signal using a parameter associated with an SRS resource set associated with the TCI state and / or a parameter associated with the TCI state. (Appendix 2) The method described in Supplementary Note 1, wherein the TCI status indication information is carried by a TCI field in a first DCI format. (Appendix 3) The TCI status indication information indicates an uplink TCI status and / or a downlink TCI status; or 2. The method of claim 1, wherein the TCI status indication information indicates a joint TCI status for indicating an uplink TCI status and a downlink TCI status. (Appendix 4) 4. The method of claim 1, further comprising: determining, in the plurality of SRS resource sets, an SRS resource set associated with the uplink TCI state or the joint TCI state when the TCI state indication information indicates an uplink TCI state or a joint TCI state. (Appendix 5) 5. The method of claim 4, wherein the TCI state indication information indicates two uplink TCI states or two joint TCI states before the TCI state indication information indicates an uplink TCI state or a joint TCI state. (Appendix 6) The TCI status indication information is 1 joint TCI state, Two joint TCI states, Two downlink TCI states and two uplink TCI states; one downlink TCI state and one uplink TCI state; Two downlink TCI states and one uplink TCI state; Two uplink TCI states and one downlink TCI state; Two downlink TCI states, Two uplink TCI states, One downlink TCI state, or 6. The method of any one of Supplementary Notes 1 to 5, wherein at least one TCI state of one uplink TCI state is indicated. (Appendix 7) the SRS resource set associated with the TCI state is a predetermined SRS resource set among the plurality of SRS resource sets; an SRS resource set associated with the TCI state is determined based on an indication of a second DCI format; The SRS resource set associated with the TCI state is determined based on a reference signal; and / or 6. The method of any one of Supplementary Notes 1 to 5, wherein the SRS resource set associated with the TCI state is determined based on an indication of a first DCI format. (Appendix 8) 2. The method of claim 1, wherein the SRS resource set associated with the TCI state is a first SRS resource set among the plurality of SRS resource sets. (Appendix 9) The SRS resource set associated with the TCI state is indicated by an SRS resource set indicator field, or The method described in Supplementary Note 1, wherein the SRS resource set associated with the TCI state is indicated by an SRS request field. (Appendix 10) 10. The method of claim 9, wherein, when the TCI state indication information indicates one uplink TCI state or one joint TCI state, an SRS resource set associated with the TCI state is indicated by the SRS resource set indicator field or the SRS request field. (Appendix 11) scheduling transmission of uplink data if the second DCI format indicates an SRS resource set associated with the TCI state; or 10. The method of claim 9, wherein if the second DCI format indicates an SRS resource set associated with the TCI state, no uplink data transmission is scheduled. (Appendix 12) The SRS resource set associated with the TCI state is determined based on a reference signal in the uplink TCI state or the joint TCI state; or 2. The method of claim 1, wherein the SRS resource set associated with the TCI state is determined based on a reference signal in PUCCH spatial relation info. (Appendix 13) The method according to Supplementary Note 12, wherein the PUCCH resource indication field indicates a PUCCH resource for which one piece of spatial relationship information is activated, but does not indicate a PUCCH resource for which multiple pieces of spatial relationship information are activated. (Appendix 14) the SRS resource set associated with the TCI state is indicated by a TCI field of the first DCI format; and / or the SRS resource set associated with the TCI state is indicated by an unused field of the first DCI format; and / or 2. The method of claim 1, wherein the SRS resource set associated with the TCI state is indicated by a new field in the first DCI format. (Appendix 15) If the SRS resource set associated with the TCI state is indicated by a TCI field of a first DCI format, 2. The method of claim 1, wherein the SRS resource set associated with the TCI state determined based on at least one of an SRS resource set indicator field, an SRS request field, and a PUCCH resource indication field is identical to the SRS resource set associated with the TCI state indicated by the TCI field. (Appendix 16) if the second DCI format is received before determining an SRS resource set associated with the TCI state, the SRS resource set associated with the TCI state is determined based on an SRS resource set indicator field or an SRS request field of the second DCI format that was last received; 2. The method of claim 1, wherein if the second DCI format is not received before determining the SRS resource set associated with the TCI state, the SRS resource set associated with the TCI state is the first SRS resource set of the plurality of SRS resource sets. (Appendix 17) The plurality of SRS resource sets include: Physical Uplink Shared Channel (PUSCH) based on dynamic grant; PUSCH based on Type 1 configured grant, PUSCH based on Type 2 configured grant, Periodic SRS, Semi-persistent Sounding Reference Signal (SRS), Aperiodic SRS, or 17. The method of any of Supplementary Notes 1 to 16, wherein the SRS resource set is associated with at least one signal / channel of a Physical Uplink Control Channel (PUCCH). (Appendix 18) The method described in Supplementary Note 17, wherein the transmission of the PUSCH and / or the PUCCH based on the dynamic grant is transmission of a PUSCH and / or a PUCCH that schedules multiple transmission / reception points (mTRPs) based on a single DCI (sDCI). (Appendix 19) 19. The method of any of Supplementary Notes 1 to 18, wherein the parameters related to the SRS resource set associated with the TCI state include at least one parameter of an SRS resource indicator (SRI), a precoding matrix indicator (PMI), a number of layers, a number of antennas, an antenna index, or a power control parameter. (Appendix 20) 19. The method of any of claims 1 to 18, wherein the parameters related to the TCI state include power control parameters. (Appendix 21) If the TCI state indication information indicates an uplink TCI state or a joint TCI state, transmitting all PUSCH repetitions, wherein the all PUSCH repetitions are associated with an SRS resource set associated with the TCI state and / or the uplink TCI state or the joint TCI state; or 21. The method of any of Supplementary Notes 1 to 20, further comprising: if the TCI state indication information indicates an uplink TCI state or a joint TCI state, transmitting some PUSCH repetitions, wherein the some PUSCH repetitions are associated with an SRS resource set associated with the TCI state and / or the uplink TCI state or the joint TCI state. (Appendix 22) 22. The method of any of Supplementary Notes 1 to 21, wherein, if the TCI state indication information indicates an uplink TCI state or a joint TCI state, transmitting an SRS in an SRS resource set associated with the TCI state. (Appendix 23) the first DCI format indicates TCI status indication information; The second DCI format is Physical uplink shared channel (PUSCH) transmission based on dynamic grant; PUSCH transmission based on Type 2 configured grant, Physical Uplink Control Channel (PUCCH) transmission, Semi-persistent Sounding Reference Signal (SRS) transmission, or 22. The method of any of claims 1 to 21, wherein at least one of the aperiodic SRS transmissions is indicated or activated. (Appendix 24) 18. The method of claim 17, wherein PUSCH transmission based on a dynamic grant is scheduled by DCI format 0_0, or PUSCH transmission based on a Type 2 configured grant is activated by DCI format 0_0, and the PUSCH is considered to be associated with the first SRS resource set. (Appendix 25) A signal receiving method applied to a network device, comprising: configuring multiple SRS resource sets; transmitting TCI state indication information, the TCI state indication information indicating at least one TCI state, and at least one SRS resource set among the plurality of SRS resource sets being associated with the TCI state; A method comprising: a step of receiving an uplink signal transmitted by a terminal device, wherein the terminal device transmits the uplink signal using parameters related to an SRS resource set associated with the TCI state and / or parameters related to the TCI state. (Appendix 26) The method described in Supplementary Note 25, wherein the TCI status indication information is carried by a TCI field in a first DCI format. (Appendix 27) The TCI status indication information indicates an uplink TCI status and / or a downlink TCI status; or 27. The method of claim 26, wherein the TCI status indication information indicates a joint TCI status for indicating an uplink TCI status and a downlink TCI status. (Appendix 28) 28. A method according to any one of Supplementary Notes 25 to 27, wherein, when the TCI state indication information indicates an uplink TCI state or a joint TCI state, the terminal device determines an SRS resource set associated with the uplink TCI state or the joint TCI state in the plurality of SRS resource sets. (Appendix 29) 29. The method of claim 28, wherein the TCI state indication information indicates two uplink TCI states or two joint TCI states before the TCI state indication information indicates an uplink TCI state or a joint TCI state. (Appendix 30) The TCI status indication information is 1 joint TCI state, Two joint TCI states, Two downlink TCI states and two uplink TCI states; one downlink TCI state and one uplink TCI state; Two downlink TCI states and one uplink TCI state; Two uplink TCI states and one downlink TCI state; Two downlink TCI states, Two uplink TCI states, One downlink TCI state, or 30. The method of any of claims 25 to 29, indicating at least one TCI state of one uplink TCI state. (Appendix 31) The plurality of SRS resource sets include: Physical Uplink Shared Channel (PUSCH) based on dynamic grant; PUSCH based on Type 1 configured grant, PUSCH based on Type 2 configured grant, Periodic SRS, Semi-persistent Sounding Reference Signal (SRS), Aperiodic SRS, or 31. The method of any of Supplementary Notes 25 to 30, wherein the SRS resource set is associated with at least one signal / channel of a Physical Uplink Control Channel (PUCCH). (Appendix 32) The method of claim 31, wherein the transmission of the PUSCH and / or the PUCCH based on the dynamic grant is transmission of a PUSCH and / or a PUCCH that schedules multiple transmission / reception points (mTRPs) based on a single DCI (sDCI). (Appendix 33) A terminal device comprising: a memory having a computer program stored therein; and a processor, the processor configured to execute the computer program to realize a signal transmission method according to any one of Supplementary Notes 1 to 24. (Appendix 34) 33. A network device comprising: a memory having a computer program stored therein; and a processor, the processor configured to execute the computer program to implement the signal reception method of any one of appendices 25 to 32. (Appendix 35) a network device that configures a plurality of SRS resource sets and transmits TCI status indication information; a terminal device that receives the TCI state indication information, the TCI state indication information indicating at least one TCI state, determines an SRS resource set associated with the TCI state from the plurality of SRS resource sets, and performs uplink transmission using parameters associated with the SRS resource set associated with the TCI state and / or parameters associated with the TCI state.

Claims

1. A signal transmitting device, a receiver for receiving TCI status indication information, the TCI status indication information indicating at least one TCI status; a processor for determining an SRS resource set associated with an indicated TCI state among a plurality of configured SRS resource sets; and a transmitter that performs uplink transmission using parameters related to an SRS resource set associated with the TCI state and / or parameters related to the TCI state, and performs uplink transmission for a dynamic grant PUSCH scheduled by DCI format 0_0 or a type 2 configuration grant PUSCH activated by DCI format 0_0, wherein the dynamic grant PUSCH or the type 2 configuration grant PUSCH is associated with a first SRS resource set of a plurality of configured SRS resource sets and / or is associated with a first TCI state associated with the first SRS resource set of a plurality of configured SRS resource sets.

2. The apparatus of claim 1 , wherein the TCI status indication information is carried by a TCI field in a first DCI format.

3. The TCI status indication information indicates an uplink TCI status and / or a downlink TCI status; or The apparatus of claim 1 , wherein the TCI status indication information indicates a joint TCI status for indicating an uplink TCI status and a downlink TCI status.

4. 2. The apparatus of claim 1, wherein, if the TCI state indication information indicates an uplink TCI state or a joint TCI state, the processor determines an SRS resource set associated with the uplink TCI state or the joint TCI state in the plurality of SRS resource sets.

5. The apparatus of claim 4 , wherein the TCI state indication information indicates two uplink TCI states or two joint TCI states before the TCI state indication information indicates an uplink TCI state or a joint TCI state.

6. The TCI status indication information is One joint TCI state, Two joint TCI states, Two downlink TCI states and two uplink TCI states; one downlink TCI state and one uplink TCI state; Two downlink TCI states and one uplink TCI state; Two uplink TCI states and one downlink TCI state; Two downlink TCI states: Two uplink TCI states: one downlink TCI state, or 6. The apparatus of claim 5, wherein the apparatus indicates at least one TCI state of an uplink TCI state.

7. The processor determining an SRS resource set associated with the TCI state comprises: determining based on a predetermined SRS resource set from the plurality of SRS resource sets; determining based on an indication of the second DCI format; making a decision based on a reference signal; or The apparatus of claim 1 , further comprising determining based on an indication of a first DCI format.

8. The apparatus of claim 7 , wherein the SRS resource set associated with the TCI state is a first SRS resource set among the plurality of SRS resource sets.

9. the SRS resource set associated with the TCI state is indicated by an SRS resource set indicator field in the second DCI format; or The apparatus of claim 7 , wherein the SRS resource set associated with the TCI state is indicated by an SRS request field in the second DCI format.

10. 10. The apparatus of claim 9, wherein, when the TCI state indication information indicates one uplink TCI state or one joint TCI state, an SRS resource set associated with the TCI state is indicated by the SRS resource set indicator field or the SRS request field.

11. scheduling transmission of uplink data if the second DCI format indicates an SRS resource set associated with the TCI state; or The apparatus of claim 9 , wherein if the second DCI format indicates an SRS resource set associated with the TCI state, then the apparatus does not schedule transmission of uplink data.

12. 2. The apparatus of claim 1, wherein the TCI codepoint indicates whether an i-th downlink TCI state exists and whether a j-th uplink TCI state exists, where i=1, 2, j=1, 2.

13. The processor determining an SRS resource set associated with the TCI state, comprising: indicated by a TCI field of the first DCI format, and / or indicated by an unused field of the first DCI format, and / or The apparatus of claim 7 , further comprising indicating by a new field of the first DCI format.

14. If the second DCI format is received before the processor determines an SRS resource set associated with the TCI state, the processor determines an SRS resource set associated with the TCI state based on an SRS resource set indicator field or an SRS request field of the second DCI format that was last received; 8. The apparatus of claim 7, wherein if the second DCI format is not received before the processor determines an SRS resource set associated with the TCI state, the processor determines a first SRS resource set among the plurality of SRS resource sets as the SRS resource set associated with the TCI state.

15. The plurality of SRS resource sets include: Dynamic grant based PUSCH, PUSCH based on Type 1 configuration grant, PUSCH based on Type 2 configuration grant, periodic SRS, Semi-persistent sounding reference signal, aperiodic sounding reference signal, or 2. The apparatus of claim 1, wherein the SRS resource set is associated with at least one signal / channel of a physical uplink control channel.

16. The apparatus of claim 15 , wherein the transmission of the PUSCH and / or the physical uplink control channel based on the dynamic grant is transmission of a PUSCH and / or a PUCCH that schedules multiple transmission / reception points based on a single DCI.

17. 2. The apparatus of claim 1, wherein if the TCI state indication information indicates an uplink TCI state or a joint TCI state, the transmitter transmits all PUSCH repetitions, and the all PUSCH repetitions are associated with the uplink TCI state or the joint TCI state.

18. The parameters related to the SRS resource set associated with the TCI state include at least one parameter of an SRS resource indicator, a precoding matrix indicator, a number of layers, a number of antennas, an antenna index, or a power control parameter; The apparatus of claim 1 , wherein the TCI state related parameters include power control parameters.

19. the first DCI format indicates TCI status indication information; The second DCI format is PUSCH transmission based on dynamic grants; PUSCH transmission based on Type 2 configuration grant; PUCCH transmission, Semi-persistent sounding reference signal transmission, or The apparatus of claim 7 , wherein the apparatus indicates or activates at least one of aperiodic sounding reference signal transmission.

20. A signal receiving device, a processor that configures a plurality of SRS resource sets; a transmitter for transmitting TCI status indication information, the TCI status indication information indicating at least one TCI status; and a receiver that receives an uplink signal transmitted by a terminal device, wherein the terminal device transmits the uplink signal using a parameter associated with an SRS resource set associated with the TCI state and / or a parameter associated with the TCI state, and a dynamic grant PUSCH scheduled by DCI format 0_0 or a type 2 configuration grant PUSCH activated by DCI format 0_0 is associated with a first SRS resource set among a plurality of configured SRS resource sets and / or is associated with a first TCI state associated with the first SRS resource set among a plurality of configured SRS resource sets.

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