Signal transmitting and receiving device and method

Abstract

In an embodiment of the present invention, a signal transmission / reception device and method are provided, the method including: a terminal device receiving transmission configuration indication (TCI) state indication information, the TCI state indication information indicating a first uplink or joint TCI state and a second uplink or joint TCI state; the terminal device receiving downlink control information (DCI); and the terminal device performing uplink transmission based on the first uplink or joint TCI state and / or the second uplink or joint TCI state according to an uplink transmission scheme indicated by the downlink control information.

Description

[Technical Field]

[0001] The present invention relates to the field of communications. [Background technology]

[0002] In the standardization process of 3GPP Release 17 (Rel-17), standardization related work is being carried out on a unified transmission configuration indication (TCI), among which the unified TCI in Rel-17 is mainly designed for the scenario of single transmission and reception point (sTRP).

[0003] With the progress of standardization work, multiple transmission and reception points (mTRP) have become an important scenario for 5G NR systems, and transmission based on mTRP can achieve the goals of improving throughput or reliability.

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

[0005] It should be noted that the introduction of the above background art is intended to clearly and completely explain the technical solutions of the present invention and to facilitate understanding by those skilled in the art, and these technical solutions described in the background art of the present invention should not be construed as being known to those skilled in the art. Summary of the Invention [Problem to be solved by the invention]

[0006] However, the inventors discovered that the unified TCI in Rel-17 is only suitable for the sTRP scenario, and considering the importance of mTRP, it is necessary to configure a corresponding unified TCI mechanism for the mTRP scenario.

[0007] In a scenario where the Rel-17 unified TCI is for a single transmission and reception point (sTRP), the network equipment configures M (M≧1) TCI states for the terminal equipment using radio resource control (RRC) signaling, activates N (1≦N≦M) TCI states out of the M TCI states using a medium access control (MAC) control element (CE), and indicates L (1≦L≦N) TCI states out of the N TCI states using downlink control information (DCI).

[0008] Among them, one TCI state (abbreviated as TCI) may include or correspond to one or two source reference signals (source RS, source reference signal). The source reference signal can provide Quasi Co-Location (QCL) information for downlink reception and is called a downlink source reference signal. The source reference signal can provide reference for uplink transmission spatial filter (UL TX spatial filter, uplink transmission spatial filter) and is called an uplink source reference signal.

[0009] The source reference signal can provide beam information for a target (destination) channel / signal. For example, the beam for a terminal device to receive the target channel / signal is the same as the beam for receiving the downlink source reference signal. Also, for example, the beam for a terminal device to transmit the target channel / signal is the same as the beam for transmitting the uplink source reference signal. Also, for example, the beam for a terminal device to transmit the target channel / signal has reciprocity with the beam for receiving the downlink source reference signal, i.e., beams with opposite directions are used.

[0010] Therefore, an instruction or update to the TCI state actually includes an instruction or update to 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 simultaneously affects 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 the beam directions are opposite, i.e., there is reciprocity between the uplink and downlink beams. 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 can indicate a joint TCI state (joint DL / UL TCI), or the TCI field can indicate a separate (separate) TCI state (separate DL / UL TCI), i.e., it can indicate a downlink TCI state and / or an uplink TCI state. Whether the TCI field indicates a joint TCI state or a separate TCI state is configured by RRC signaling.

[0011] In the case of Rel-17 unified TCI, for joint TCI states, one TCI field indicates one joint TCI state, and for independent TCI states, one TCI field indicates one downlink TCI state, or one uplink TCI state, or one downlink TCI state and one uplink TCI state.

[0012] In the case of a unified TCI in the mTRP, the terminal device may be indicated with two uplink TCI states or a joint TCI state. For a terminal device with multi-panel simultaneous uplink transmission capability, it can transmit simultaneously using two panels based on the two uplink TCI states or the joint TCI state. For example, during the active period of the two uplink TCI states or the joint TCI state, the terminal device performs multi-panel simultaneous transmission.

[0013] Considering the influence of factors such as mobility, changes in channel conditions, and channel blockage, if a terminal device always performs simultaneous multi-panel uplink transmission within the active period of two TCI states, it may not be able to adapt to the above-mentioned rapid changes, and may not be able to guarantee throughput or reliability for transmission, or may cause additional interference to other devices due to unnecessary multi-panel transmission.To solve these problems, a more ideal method is for the terminal device to have greater freedom to flexibly switch between multiple uplink transmission schemes.

[0014] In view of at least one of the above problems, embodiments of the present invention provide a signal transmitting and receiving apparatus and method. [Means for solving the problem]

[0015] According to one aspect of an embodiment of the present invention, there is provided a signal transmission method, which includes: a terminal device receives transmission configuration indication (TCI) state indication information, the TCI state indication information indicating a first uplink or joint TCI state and a second uplink or joint TCI state; The terminal device receives downlink control information (DCI); and The terminal device performs uplink transmission based on the first uplink or joint TCI state and / or the second uplink or joint TCI state according to an uplink transmission scheme indicated by the downlink control information.

[0016] According to another aspect of an embodiment of the present invention, there is provided a signal receiving method, the method comprising: A network device sends a transmission configuration indication (TCI) status indication, the TCI status indication indicating a first uplink or joint TCI status and a second uplink or joint TCI status; The network device transmits downlink control information (DCI); and receiving an uplink transmission by the network device; Wherein, the terminal device performs the uplink transmission based on the first uplink or joint TCI state and / or the second uplink or joint TCI state according to the uplink transmission scheme indicated by the downlink control information.

[0017] According to another aspect of an embodiment of the present invention, there is provided a signal transmitting device, comprising: a first receiving unit for receiving transmission configuration indication (TCI) state indication information, the TCI state indication information indicating a first uplink or joint TCI state and a second uplink or joint TCI state; a second receiving unit for receiving downlink control information (DCI); and A transmitting unit for performing uplink transmission based on the first uplink or joint TCI state and / or the second uplink or joint TCI state according to an uplink transmission scheme indicated by the downlink control information.

[0018] According to another aspect of an embodiment of the present invention, there is provided a signal receiving device, comprising: a first transmitting unit for transmitting transmission configuration indication (TCI) state indication information, the TCI state indication information indicating a first uplink or joint TCI state and a second uplink or joint TCI state; a second transmitting unit for transmitting downlink control information (DCI); and a receiving unit for receiving an uplink transmission; Wherein, the terminal device performs the uplink transmission based on the first uplink or joint TCI state and / or the second uplink or joint TCI state according to the uplink transmission scheme indicated by the downlink control information.

[0019] According to another aspect of an embodiment of the present invention, there is provided a communication system, comprising: Including network equipment and terminal equipment, The network device transmits a transmission configuration indication (TCI) state indication, the TCI state indication indicating a first uplink or joint TCI state and a second uplink or joint TCI state; transmits downlink control information (DCI); and receives an uplink transmission. The terminal device receives the transmission configuration indication (TCI) state indication information; receives the downlink control information (DCI); and performs the uplink transmission based on the first uplink or joint TCI state and / or the second uplink or joint TCI state according to an uplink transmission scheme indicated by the downlink control information. [Effects of the Invention]

[0020] The advantageous effects of the embodiments of the present invention are at least as follows: a terminal device can perform uplink transmission based on a first uplink or joint TCI state and / or a second uplink or joint TCI state according to an uplink transmission scheme indicated by downlink control information (DCI), thereby enabling the terminal device to switch between at least one multi-panel uplink transmission scheme and / or at least one single-panel uplink transmission scheme, thereby achieving more robust uplink transmission performance and improving the throughput or reliability of uplink transmission.

[0021] The following description and reference to the drawings disclose in detail particular embodiments of the present invention, illustrating ways in which the principles of the present invention may be employed, but the scope of the present invention is not limited thereto, and various changes, modifications, and alternatives may be included within the scope of the appended claims.

[0022] Furthermore, 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 the other embodiments, or may be substituted for features in the other embodiments.

[0023] It should be noted that terms such as "comprise / have" when used in this specification refer to the presence of a feature, element, step or assembly, but do not exclude the presence or addition of one or more other features, elements, steps or assemblies. [Brief explanation of the drawings]

[0024] Elements and features described in one drawing or one embodiment of the invention may be combined with elements and features shown in one or more other drawings or embodiments, and in the drawings, like reference numerals are used to indicate corresponding parts in several drawings and to indicate corresponding parts used in multiple embodiments. [Figure 1]1 is a diagram illustrating a communication system according to an embodiment of the present invention. [Figure 2] FIG. 2 is a diagram illustrating a signal transmission method according to an embodiment of the present invention. [Figure 3] FIG. 2 is a diagram illustrating an example of an uplink transmission scheme in an embodiment of the present invention. [Figure 4] FIG. 10 is a diagram illustrating another example of an uplink transmission scheme in an embodiment of the present invention. [Figure 5] FIG. 10 is a diagram illustrating yet another example of an uplink transmission scheme in an embodiment of the present invention. [Figure 6] FIG. 10 is a diagram illustrating an example of an association between power control parameters and uplink TCI states or joint TCI states in an embodiment of the present invention. [Figure 7] FIG. 10 is a diagram illustrating an example of the association between power control parameters and SRI in an embodiment of the present invention. [Figure 8] FIG. 2 is a diagram illustrating a MAC CE in an embodiment of the present invention. [Figure 9] FIG. 2 is another diagram illustrating a MAC CE in an embodiment of the present invention. [Figure 10] FIG. 10 is yet another diagram illustrating a MAC CE in an embodiment of the present invention. [Figure 11] FIG. 2 illustrates a signal receiving method according to an embodiment of the present invention. [Figure 12] 1 is a diagram illustrating a signal transmitting device according to an embodiment of the present invention. [Figure 13] FIG. 2 is another diagram showing a signal receiving device in an embodiment of the present invention. [Figure 14] FIG. 1 is a configuration diagram of a network device according to an embodiment of the present invention. [Figure 15] FIG. 2 is a configuration diagram of a terminal device according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0025] The foregoing and other features of the present invention will become more apparent from a consideration of the accompanying drawings and the following description. While the specification and drawings disclose particular embodiments of the present invention, they illustrate only some of the embodiments which may employ the principles of the present invention, and it is to be understood that the present invention is not limited to the described embodiments, but rather includes all modifications, variations, and alternatives which fall within the scope of the appended claims.

[0026] In embodiments of the present invention, the term "communication network" or "wireless communication network" may refer to a network conforming to any communication standard, such as LTE (Long Term Evolution), LTE-A (LTE-Advanced), WCDMA (Wideband Code Division Multiple Access), HSPA (High-Speed ​​Packet Access), etc.

[0027] Additionally, communications between devices in a communications system may be performed according to any level of communications protocol, including, but not limited to, 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G, 5G, New Radio (NR), and / or other conventional or future-developed communications protocols.

[0028] In an embodiment of the present invention, the term "network equipment" refers to, for example, a device in a communication system that connects a terminal device to a communication network and provides services to the terminal device. The network equipment may include, but is not limited to, a "node" and / or a "donor" under the IAB architecture, a base station (BS), an access point (AP), a transmission reception point (TRP), a broadcast transmitter, a mobile management entity (MME), a network gateway, a server, a radio network controller (RNC), a base station controller (BSC), etc.

[0029] 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., and may further include a Remote Radio Head (RRH), a Remote Radio Unit (RRU), a relay, or a low-power node (e.g., femto, pico, etc.). The term "base station" may include some or all of these functions, and each base station can provide communication coverage for a specific geographical area. For example, a 5G base station gNB may include one gNB CU and one or more gNB DUs, where a CU / DU is a logical node of the gNB that has some of the functions of the gNB. The term "cell" may refer to a base station and / or the area it covers, depending on the context in which the term is used.

[0030] 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 services from the network, for example, via network equipment. The user equipment may be fixed or mobile, and may also be referred to as a mobile station (MS), terminal, subscriber station (SS), access terminal (AT), station, etc. For example, it is a terminal equipment served by an IAB node or an IAB donor under the IAB architecture.

[0031] Among these, user equipment may include, but is not limited to, cellular phones, personal digital assistants (PDAs), wireless modems, wireless communication devices, mobile devices, machine-type communication devices, laptop computers, cordless phones, smartphones, smart watches, digital cameras, etc.

[0032] Furthermore, for example, in a scenario such as the Internet of Things (IoT), the user equipment may also be a monitoring or measuring device or apparatus, for example, including but not limited to, a Machine Type Communication (MTC) terminal, an in-vehicle communication terminal, a Device to Device (D2D) terminal, a Machine to Machine (M2M) terminal, etc.

[0033] Furthermore, the term "network side" or "network equipment side" refers to the network side, which may be a base station or may include one or more network equipment as described above. The term "user side" or "terminal side" or "terminal equipment side" refers to the user or terminal side, which may be a UE or may include one or more terminal equipment as described above. Unless otherwise specified, "equipment" herein may refer to network equipment or may also refer to terminal equipment.

[0034] The following examples will be used to explain scenarios in embodiments of the present invention, but the present invention is not limited thereto.

[0035] 1 is a diagram showing a communication system in an embodiment of the present invention, and will be described using a terminal device and a network device as an example. As shown in FIG. 1, a communication system 100 may include a first TRP 101, a second TRP 102, and a terminal device 103. Of these, the first TRP 101 and the second TRP 102 may be network devices. For convenience, FIG. 1 will be described using only two network devices and one terminal device as an example, but the embodiment of the present invention is not limited thereto.

[0036] In an embodiment of the present invention, existing services (traffic) or future services may be transmitted between the first TRP 101, the second TRP 102, and the terminal device 103. For example, these services may include, but are not limited to, eMBB (enhanced Mobile Broadband), mMTC (massive Machine Type Communication), and URLLC (Ultra-Reliable and Low-Latency Communication).

[0037] 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). For sDCI mTRP, one DCI schedules uplink and downlink transmissions of two TRPs and is more suitable when the backhaul between the TRPs is relatively ideal. For mDCI mTRP, two TRPs schedule uplink and downlink transmissions of their respective TRPs using two DCIs and is more suitable when the backhaul between the TRPs is not ideal.

[0038] Taking the terminal device 103 as an example of transmitting a PUSCH in the mTRP scenario, as shown in Figure 1, the terminal device 103 transmits a PUSCH in a PUSCH repetition manner, for example, in slot 1 it transmits to the first TRP 101, in slot 2 it transmits to the second TRP 102, and the others can be inferred accordingly.

[0039] Two SRS resource sets are configured for the terminal device 103. For example, a first SRS resource set corresponding to the first TRP 101 is configured for the terminal device 103, and a second SRS resource set corresponding to the 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 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 may also obtain 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 SRS resource indicator (SRI). For a dynamic uplink grant, two SRI fields in DCI indicate SRS resources in two SRS resource sets, respectively. For a configured grant, two SRIs are configured for the two SRS resource sets by RRC. Therefore, the terminal device needs to know the mapping relationship between PUSCH repetitions and SRS resource sets, i.e., it needs to know which SRS resource set each PUSCH repetition should be transmitted based on.

[0042] In Rel-17, a terminal device uses only one panel for each uplink transmission. Even if a terminal device has multiple panels, Rel-17 does not support simultaneous uplink transmission using multiple panels. In Rel-18, research and standardization of simultaneous multi-panel uplink transmission for terminal devices is expected, and this will be based on the unified TCI framework and mTRP scenario mentioned above. Currently, simultaneous multi-panel uplink transmission has been confirmed as one of the Rel-18 projects, but the Rel-18 standardization work has not yet begun.

[0043] In view of at least one of the above problems, embodiments of the present invention provide a method, an apparatus and a system for performing uplink transmission based on a unified TCI in a multi-TRP scenario.

[0044] <Example of the first aspect> In an embodiment of the present invention, a signal transmission method is provided, which is applied to the terminal equipment side.

[0045] 2 is a diagram illustrating a signal transmission method according to an embodiment of the present invention. As shown in FIG. 2, the method includes:

[0046] 201: A terminal device receives transmission configuration indication (TCI) status indication information, the TCI status indication information indicating a first uplink or joint TCI status and a second uplink or joint TCI status; 202: The terminal device receives downlink control information (DCI); and 203: The terminal device performs uplink transmission based on the first uplink or joint TCI state and / or the second uplink or joint TCI state according to an uplink transmission scheme indicated by the downlink control information.

[0047] Note that the above-mentioned FIG. 2 is for illustrative purposes only and uses a terminal device as an example to explain an embodiment of the present invention, but the present invention is not limited to this. For example, the execution order of each operation (step) may be adjusted, some operations may be added or removed, or the targets of the above-mentioned operations may be adjusted. Furthermore, those skilled in the art are not limited to the description of the above-mentioned FIG. 2 and can make appropriate modifications based on the above content.

[0048] In some embodiments, the terms "TRP" and "SRS resource set" are interchangeable. The terms "TRP" and "CSI-RS resource set" are interchangeable. The terms "corresponding," "associating," and "comprising" are interchangeable, and "uplink TCI state" and "joint TCI state" are interchangeable. The terms "uplink TCI state or joint TCI state" and "uplink or joint TCI state" are interchangeable. The terms "transmit" and "send" are interchangeable. However, embodiments of the present invention are not limited thereto.

[0049] In some embodiments, the terminal device receives the downlink control information during an active period of a first uplink or joint TCI state and a second uplink or joint TCI state.

[0050] In some embodiments, the available uplink transmission scheme of the terminal device is an uplink transmission scheme to use in at least one of the following cases: - Two SRS resource sets are configured in the terminal equipment; DCI format 1_1 / 1_2 with / without DL assignment indicates transmission configuration indication (TCI) state indication information, where the TCI state indication information indicates two uplink TCI states (UL-TCIState) or joint TCI states (DLorJoint-TCIState). DCI format 1_1 or DCI format 1_2 can schedule downlink data, which is referred to as DCI format 1_1 / 1_2 with DL assignment, or can not schedule downlink data, which is referred to as DCI format 1_1 / 1_2 without DL assignment; - during the duration of two uplink TCI states or joint TCI states, - The terminal equipment has at least two panels and has multi-panel simultaneous uplink transmission capability.

[0051] For example, DCI format 1_1 or DCI format 1_2 indicates two uplink TCI states or joint TCI states, and during the operation period of the above-mentioned two TCI states, DCI format 0_1 ​​or DCI format 0_2 further indicates that the terminal device performs uplink transmission using a certain uplink transmission scheme, and the uplink transmission scheme may be based on the two TCI states, or the first TCI state, or the second TCI state.

[0052] In some embodiments, the downlink control information indicates or activates the uplink transmission, the uplink transmission including: - Physical Uplink Shared Channel (PUSCH) transmission based on a dynamic grant; or - PUSCH transmission based on a Type 2 configured grant; or - Physical Uplink Control Channel (PUCCH) transmission; or - semi-persistent (semi-persistent) sounding reference signal (SRS) transmission; or - Aperiodic SRS transmission is.

[0053] In some embodiments, PUSCH transmissions based on a dynamic grant include initial transmissions and retransmissions for PUSCHs based on non-Type 1 / Type 2 configured grants scheduled by DCI, and retransmissions for PUSCHs of Type 1 / Type 2 configured grants scheduled by DCI.

[0054] In some embodiments, the uplink transmission includes transmission for at least one of the following: - PUSCH based on dynamic grant; - PUSCH based on Type 1 configured grant; - PUSCH based on Type 2 configured grant; - PUCCH; - Periodic SRS; - Semi-persistent SRS; and - Aperiodic SRS is.

[0055] In some embodiments, the available uplink transmission scheme of the terminal device is an uplink transmission scheme when unified TCI is not used. For example, the terminal device determines an uplink transmission scheme based on an embodiment of the present invention, but does not perform uplink transmission using an UL TX spatial filter determined based on unified TCI, but performs uplink transmission using an UL TX spatial filter determined based on the prior art.

[0056] The following describes an exemplary uplink transmission scheme, and there may be one or more available uplink transmission schemes.

[0057] In some embodiments, the uplink transmission scheme includes: Scheme 0: Simultaneously, a first uplink transmission is performed based on the first uplink or joint TCI state, and a second uplink transmission is performed based on the second uplink or joint TCI state (i.e., a first uplink transmission based on the first uplink or joint TCI state and a second uplink transmission based on the second uplink or joint TCI state are performed simultaneously. Hereinafter, similar expressions have similar meanings), wherein the first uplink transmission uses a first set of power control parameters, and the second uplink transmission uses a second set of power control parameters.

[0058] In scheme 0, the terminal device uses two panels to simultaneously perform the first uplink transmission and the second uplink transmission to a first transmission receiving point and a second transmission receiving point, respectively.

[0059] In some embodiments, the uplink transmission scheme includes: Scheme 1: Simultaneously, a first uplink transmission is performed based on the first uplink or joint TCI state, and a second uplink transmission is performed based on the second uplink or joint TCI state, wherein the first uplink transmission and the second uplink transmission use a first set of power control parameters.

[0060] In scheme 1, the terminal device uses two panels to simultaneously perform the first uplink transmission and the second uplink transmission to a first transmission receiving point.

[0061] In some embodiments, the uplink transmission scheme includes: Scheme 2: At the same time, a first uplink transmission is performed based on the first uplink or joint TCI state, and a second uplink transmission is performed based on the second uplink or joint TCI state, wherein the first uplink transmission and the second uplink transmission use a second set of power control parameters.

[0062] In scheme 2, the terminal device uses two panels to simultaneously perform the first uplink transmission and the second uplink transmission to a second transmission receiving point.

[0063] The above describes uplink transmission schemes using multiple panels simultaneously, which include at least one of uplink transmission schemes 0 to 2. Below, we describe uplink transmission schemes using a single panel, which include at least one of uplink transmission schemes 3 to 6.

[0064] In some embodiments, the uplink transmission scheme includes: Scheme 3: Perform a first uplink transmission based on the first uplink or joint TCI state, where the first uplink transmission uses a first set of power control parameters.

[0065] In scheme 3, the terminal device uses one panel to perform the first uplink transmission to a first transmission receiving point.

[0066] In some embodiments, the uplink transmission scheme includes: Scheme 4: Perform a second uplink transmission based on the second uplink or joint TCI state, where the second uplink transmission uses a second set of power control parameters.

[0067] In scheme 4, the terminal device uses one panel to perform the second uplink transmission to a second transmission receiving point.

[0068] In some embodiments, the uplink transmission scheme includes: Scheme 5: By time division multiplexing (TDM), a first uplink transmission is performed based on the first uplink or joint TCI state, and a second uplink transmission is performed based on the second uplink or joint TCI state, where the first uplink transmission uses a first set of power control parameters and the second uplink transmission uses a second set of power control parameters based on the first uplink or joint TCI state first and then the second uplink or joint TCI state.

[0069] In scheme 5, the terminal equipment first uses one panel to perform the first uplink transmission to a first transmission receiving point, and then uses one panel to perform the second uplink transmission to a second transmission receiving point.

[0070] In some embodiments, the uplink transmission scheme includes: Scheme 6: By time division multiplexing (TDM), a first uplink transmission is performed based on the first uplink or joint TCI state, and a second uplink transmission is performed based on the second uplink or joint TCI state, where the first uplink transmission uses a first set of power control parameters and the second uplink transmission uses a second set of power control parameters based on the second uplink or joint TCI state first and then the first uplink or joint TCI state.

[0071] In scheme 6, the terminal equipment first uses one panel to perform the second uplink transmission to the second transmission receiving point, and then uses one panel to perform the first uplink transmission to the first transmission receiving point.

[0072] The uplink transmission schemes 0 to 6 may be as shown in Table 1.

[0073] [Table 1] In some embodiments, Table 1 is Table 2 The uplink transmission scheme is equivalent to the uplink transmission scheme of the PUSCH. During the operation period of two uplink TCI states or joint TCI states, the i-th state refers to the i-th state of the two states mentioned above, where i=1, 2. For example, Table 2 shows the uplink transmission scheme of the PUSCH.

[0074] [Table 2] 3 is a diagram illustrating an example of an uplink transmission scheme in an embodiment of the present invention, illustrating uplink transmission scheme 0. As shown in FIG. 3, a terminal device simultaneously uses two panels for uplink transmission, and the two panels each transmit to two TRPs.

[0075] Figure 4 illustrates another example of an uplink transmission scheme in an embodiment of the present invention, illustrating uplink transmission scheme 1 or 2. As shown in Figure 4, a terminal device simultaneously uses two panels for uplink transmission, and the two panels transmit to only one TRP.

[0076] Figure 5 illustrates another example of an uplink transmission scheme in an embodiment of the present invention, illustrating uplink transmission scheme 3 or 4. As shown in Figure 5, a terminal device uses one panel to perform uplink transmission, and the panel transmits to only one TRP.

[0077] Uplink transmission schemes 5 and 6 can be described with reference to Figure 1. Unlike transmission scheme 0, although the terminal equipment has one or two panels, in uplink transmission schemes 5 and 6 the terminal equipment uses only one panel when performing uplink transmission, but transmits for different TRPs in different time units in a TDM manner.

[0078] The SRS resource set and power control parameters (abbreviated as power control parameters) will be described below.

[0079] In some embodiments, the first uplink transmission is based on a first SRS resource set, and the second uplink transmission is based on a second SRS resource set. For example, "uplink TCI state or joint TCI state" in Table 2 may be equivalently replaced with "SRS resource set."

[0080] In some embodiments, the i-th SRS resource set is associated with the i-th panel, where i = 1 or 2. For example, a terminal device uses the i-th panel to transmit one or more SRSs in the i-th SRS resource set, and the network device obtains channel state information of the uplink channel from the i-th panel to the network device based on the SRS, thereby determining an uplink beam, SRI, TPMI (Transmission Precoding Matrix Information), power control parameters, etc. suitable for use by the i-th panel. The SRI may be indicated by an SRS resource indicator field or a Second SRS resource indicator field in the DCI, and is abbreviated as "indicated by the SRI field." The TPMI may be indicated by a Precoding information and number of layers field or a Second Precoding information field in the DCI, and is abbreviated as "indicated by the TPMI field." Considering that the terminal device transmits the SRS and other uplink signals (e.g., PUSCH) using the same antenna, it may be said that the terminal device performing uplink transmission based on the i-th SRS resource set is equivalent to the terminal device performing uplink transmission using the i-th panel.

[0081] For example, the SRI field may be the SRS resource indicator field or the Second SRS resource indicator field in the standard TS 38.212, and the TPMI field may be the Precoding information and number of layers field or the Second Precoding information field in the standard TS 38.212, but the present invention is not limited thereto.

[0082] In some embodiments, the i-th SRS resource set is associated with the i-th uplink TCI state or joint TCI state, where i = 1, 2. For example, when a terminal device performs uplink transmission based on the i-th SRS resource set, the uplink beam to be used is determined based on the i-th uplink TCI state or joint TCI state. When the terminal device performs uplink transmission based on the i-th SRS resource set is equivalent to performing uplink transmission using the i-th panel, the uplink beam of the terminal device's i-th panel is determined based on the i-th uplink TCI state or joint TCI state.

[0083] In some embodiments, an ith set of power control parameters is determined based on an ith uplink TCI state (UL-TCIState) or joint TCI state (DLorJoint-TCIState), where i=1, 2. 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. For example, one uplink TCI state or joint TCI state includes or is associated with one set of power control parameters.

[0084] Fig. 6 is a diagram illustrating an example of an association between power control parameters and uplink TCI states or joint TCI states in an embodiment of the present invention. As shown in Fig. 6, RRC IEs (Information Elements) indicating uplink TCI states or joint TCI states, i.e., UL-TCIState and DLorJoint-TCIState, include a path loss reference signal whose indicator (ID / identifier) ​​is pathlossReferenceRS-Id, and are associated with a target received power (p0 in Fig. 6), a path loss compensation factor (alpha in Fig. 6), and a closed loop index (closedLoopIndex in Fig. 6) by Uplink-powerControlId. The ith set of power control parameters is further associated with the ith SRS resource set and the ith SRI field in Fig. 6, where i = 1, 2. Two Transmit Power Control (TPC) fields in Fig. 6 correspond to closedLoopIndex = 0 (l = 0) and closedLoopIndex = 1 (l = 1), respectively.

[0085] In some embodiments, the i-th set of power control parameters is determined based on the SRI field associated with the i-th SRS resource set, where i=1,2.

[0086] 7 is a diagram illustrating an example of the association between power control parameters and SRIs in an embodiment of the present invention. As shown in FIG. 7, the i-th SRI field is associated with a certain sri-PUSCH-PowerControlId, and is thereby associated with the i-th set of power control parameters, that is, the i-th SRI field is associated with the i-th set of power control parameters by the sri-PUSCH-PowerControlId, where i=1, 2.

[0087] In some embodiments, the i-th SRI field or TPMI field is determined based on the i-th SRS resource set, where i=1,2.

[0088] In some embodiments, the specific methods for determining the uplink beam, SRI, and TPMI can be conventional.

[0089] In some embodiments, for a multiple transmission reception point (mTRP) based on a single downlink control information (sDCI), the terminal device performs the uplink transmission based on the downlink control information.

[0090] In some embodiments, for multiple transmission reception points (mTRPs) based on multiple downlink control information (mDCI), the terminal device performs the uplink transmission based on the downlink control information.

[0091] In some embodiments, the available uplink transmission scheme of the terminal device includes a simultaneous multi-panel uplink transmission scheme, or a multi-panel uplink transmission scheme and a single-panel uplink transmission scheme. For example, the available uplink transmission scheme of the terminal device may be one or any combination of the multiple uplink transmission schemes listed in Table 1 or Table 2.

[0092] For example, available uplink transmission schemes for a terminal device include: - uplink transmission scheme 0, or - uplink transmission scheme 0 and at least one of uplink transmission schemes 1 to 6; or - at least one of the uplink transmission schemes 1-2, or - at least one of uplink transmission schemes 1-2 and at least one of uplink transmission schemes 3-6 is.

[0093] For example, for an mTRP based on sDCI, the available uplink transmission schemes of the terminal device include: - uplink transmission scheme 0, or - uplink transmission scheme 0 and at least one of uplink transmission schemes 1 to 6 is.

[0094] For example, for an mTRP based on mDCI, the available uplink transmission schemes of the terminal device include: - at least one of the uplink transmission schemes 1-2, or - at least one of uplink transmission schemes 1-2 and at least one of uplink transmission schemes 3-6 is.

[0095] The following describes how to configure and / or indicate an uplink transmission scheme.

[0096] In some embodiments, when the available uplink transmission schemes of the terminal device include multiple uplink transmission schemes, the uplink transmission scheme used by the terminal device is indicated by DCI and / or configured by RRC signaling.

[0097] For example, the available uplink transmission schemes of the terminal device include at least two of uplink transmission schemes 0 to 2, and DCI formats 0_1 and / or 0_2 indicate the uplink transmission schemes used by the terminal device.

[0098] For example, the available uplink transmission schemes of the terminal device include uplink transmission scheme 0 and at least one of uplink transmission schemes 3 and 4, and DCI formats 0_1 and / or 0_2 indicate the uplink transmission schemes used by the terminal device.

[0099] For example, the available uplink transmission schemes of the terminal device include uplink transmission scheme 0 and at least one of uplink transmission schemes 3, 4, 5, and 6, and DCI formats 0_1 and / or 0_2 indicate the uplink transmission schemes used by the terminal device.

[0100] For example, the available uplink transmission schemes of the terminal device include uplink transmission scheme 0 and at least one of uplink transmission schemes 3, 4, 5, and 6, and the RRC signaling indicates the uplink transmission scheme that the terminal device uses.

[0101] In some embodiments, the uplink transmission scheme used by the terminal device is indicated by an SRS resource set indication field or an SRS request field in the DCI.

[0102] In some embodiments, multiple uplink transmission schemes are configured for the terminal device by RRC signaling, and one uplink transmission scheme of the multiple uplink transmission schemes is indicated by the downlink control information.

[0103] For example, the available uplink transmission schemes of the terminal device include uplink transmission scheme 0, at least one of uplink transmission schemes 3 and 4, and at least one of uplink transmission schemes 5 and 6, the RRC signaling configures one RRC IE (denoted as "multi-panel-simultaneous") for the terminal device, and DCI formats 0_1 and / or 0_2 indicate that the terminal device uses one of uplink transmission schemes 0, 3, and 4, or the RRC signaling configures one RRC IE (denoted as "multi-panel-TDM") for the terminal device, and DCI formats 0_1 and / or 0_2 indicate that the terminal device uses one of uplink transmission schemes 5, 6, 3, and 4. When two uplink TCI states or a joint TCI state are indicated, the terminal device can know based on RRC signaling whether to perform uplink transmission using the two TCI states simultaneously (Scheme 0) or to perform uplink transmission using the two TCI states in a TDM manner (Schemes 5 and 6). DCI signaling can further realize dynamic switching between the uplink transmission scheme using two TCI states (Scheme 0) and the uplink transmission scheme using one TCI state (Schemes 3 and 4), or between the uplink transmission scheme using two TCI states (Schemes 5 and 6) and the uplink transmission scheme using one TCI state (Schemes 3 and 4).

[0104] In some embodiments, any one of uplink transmission schemes 0, 1, and 2 includes multiple sub-schemes, such as at least one of the following sub-schemes: - Spatial Division Multiplexing (SDM): two panels of a terminal device transmit different layers on two identical resources; - Frequency Division Multiplex 1 (FDM1): two panels of a terminal device transmit different layers on two frequency division multiplexing resources; and - Frequency Division Multiplex 2 (FDM2): Two panels of the terminal equipment transmit two copies each on two frequency division multiplexing resources.

[0105] In some embodiments, any one of the uplink transmission schemes 5, 6 includes multiple sub-schemes, for example, at least one of the following sub-schemes: - Cyclic mapping: the terminal equipment transmits TDM signals in the order 1, 2, 1, 2; and - Sequential mapping: The terminal equipment transmits TDM signals in the order 1, 1, 2, 2.

[0106] Here, 1 and 2 represent the first and second uplink or joint TCI states, or SRS resource sets, or TRPs, respectively.

[0107] In some embodiments, the subscheme is configured by RRC signaling, for example, the RRC signaling configures the terminal device to use the FDM1 subscheme, in which case uplink transmission scheme 0 in Table 1 is replaced by this subscheme (transmission schemes 1 and 2 are equally suitable), and then any one of the methods described above can be used to determine one uplink transmission scheme from among the multiple uplink transmission schemes.

[0108] In some embodiments, the subschemes are indicated by DCI signaling. For example, uplink transmission scheme 0 in Table 1 is replaced by three uplink transmission schemes 0a, 0b, and 0c (transmission schemes 1 and 2 are equally suitable), corresponding to the three subschemes, respectively, and the DCI indicates the subscheme to be used, which can then be used to determine one uplink transmission scheme from among the multiple uplink transmission schemes using any one of the methods described above.

[0109] In the following, PUCCH transmission will be described, and the above scheme is equally suitable, and the same description as before will be omitted.

[0110] In some embodiments, a terminal device receives a transmission configuration indication (TCI) state indication, the TCI state indication indicating a first uplink or joint TCI state and a second uplink or joint TCI state; The terminal device receives downlink control information (DCI); and The terminal device transmits a physical uplink control channel (PUCCH) on a PUCCH resource indicated by the downlink control information based on the first uplink or joint TCI state and / or the second uplink or joint TCI state.

[0111] In some embodiments, a physical uplink control channel (PUCCH) resource is configured by RRC signaling or MAC CE to use one uplink transmission scheme among a plurality of uplink transmission schemes, and when the PUCCH resource is configured by the DCI, the terminal device transmits the PUCCH using the configured uplink transmission scheme.

[0112] In some embodiments, "PUCCH resources are indicated by DCI" may be equivalently replaced with "PUCCH resources are determined by the PUCCH resource indicator field of the DCI and the CCE (Control Channel Element) index of the DCI."

[0113] For example, DCI format 1_1 or DCI format 1_2 indicates two uplink TCI states or joint TCI states, and DCI format 1_1 or DCI format 1_2 indicates that a terminal device transmits a PUCCH during the active period of the two TCI states. The PUCCH resource is determined based on the PUCCH resource indicator field of DCI format 1_1 or DCI format 1_2 and / or the CCE (Control Channel Element) index of DCI format 1_1 or DCI format 1_2. The PUCCH resource is configured to use a certain uplink transmission scheme by RRC signaling or MAC CE, and the uplink transmission scheme may be based on two TCI states, or the first TCI state, or the second TCI state. The terminal device transmits the PUCCH using the uplink transmission scheme.

[0114] For example, when configuring a PUCCH resource using RRC signaling, one new RRC IE (denoted as "scheme") configures the uplink transmission scheme used by the PUCCH resource, i.e., the uplink transmission scheme associated with the PUCCH. Table 3 below explains the RRC signaling. The RRC signaling can configure multiple PUCCH resources. The PUCCH resource indicator field in the DCI indicates one PUCCH resource among the multiple PUCCH resources. When transmitting a PUCCH, the terminal device uses the uplink transmission scheme associated with the PUCCH resource.

[0115] [Table 3] For example, one uplink transmission scheme is associated for a PUCCH resource by MAC CE. The PUCCH resource configured by RRC does not include an IE indicating the uplink transmission scheme, and the PUCCH resource is associated with the uplink transmission scheme by MAC CE. When the DCI indicates one PUCCH resource, the PUCCH is transmitted using the uplink transmission scheme configured by MAC CE.

[0116] 8 is a diagram illustrating a MAC CE in an embodiment of the present invention, showing an example of one MAC CE. Each PUCCH resource ID field identifies one PUCCH resource. Each PUCCH resource ID field is associated with one or more Si fields. One or more Si fields are used to indicate the uplink transmission scheme associated with the PUCCH resource.

[0117] For example, assume that three Si fields (S5-S7) are used, where "000" represents uplink transmission scheme 0, "001" represents uplink transmission scheme 1, and the others can be inferred accordingly. The unused Si fields (S0-S4) are reserved fields, i.e., equivalent to R fields (reserved fields), and can be denoted as R. Without loss of generality, the MAC CE may include other fields not shown in FIG. 8.

[0118] 9 is another diagram showing a MAC CE in an embodiment of the present invention. If the Si field is 1 and the Sj fields of other j≠i are 0, it indicates that the PUCCH resource identified by the PUCCH resource ID uses uplink transmission scheme i, where i=0, 1,..., 6. Without loss of generality, the MAC CE may include other fields not shown in FIG. 9.

[0119] 10 is another diagram showing a MAC CE in an embodiment of the present invention. A C field of 0 indicates that the PUCCH resource (PUCCH resource ID) is associated with one Spatial Relation Info (Spatial Relation Info ID0), and at least one of the S0 and S1 fields indicates an uplink transmission scheme based on one uplink TCI state or a joint TCI state. For example, a S1 field of 1 indicates uplink transmission scheme 3, and a S1 field of 0 indicates uplink transmission scheme 4, and the S0 field is marked as R. A C field of 1 indicates that the PUCCH resource (PUCCH resource ID) is associated with two Spatial Relation Info (Spatial Relation Info ID0, Spatial Relation Info ID1), and at least one of the S0, S1, S2, and S3 fields indicates an uplink transmission scheme based on two uplink TCI states or a joint TCI state. For example, using the S0 and S1 fields, "00" represents uplink transmission scheme 0, "01" represents uplink transmission scheme 5, and "10" represents uplink transmission scheme 6, and the S2 and S3 fields are marked as R. Without loss of generality, the MAC CE may include other fields not shown in FIG. 10.

[0120] In some embodiments, the PUCCH uses a unified TCI, the UL TX spatial filter used for transmitting the PUCCH is determined based on the uplink or joint TCI state, and the uplink transmission scheme used is determined based on the RRC configuration or the MAC CE configuration.

[0121] In some embodiments, the PUCCH does not transmit unified TCI, the UL TX spatial filter used for transmitting the PUCCH is determined based on Spatial Relation Info, and the uplink transmission scheme used is determined based on RRC configuration or MAC CE configuration.

[0122] For example, as shown in Figure 10, one PUCCH can be transmitted based on one Spatial Relation Info or two Spatial Relation Info, depending on whether the PUCCH resource indicated by the DCI is associated with one or two Spatial Relation Info. If the uplink transmission scheme is based on the RRC configuration, the uplink transmission mode of the PUCCH is determined based on the "scheme" IE of the RRC configuration. If the uplink transmission scheme is determined based on the MAC CE configuration, the uplink transmission mode of the PUCCH is determined based on the Si field.

[0123] In some embodiments, when a DCI indicates a PUCCH resource, the PUCCH is transmitted using the uplink transmission scheme indicated by the DCI. For example, during the active period of two uplink TCI states or joint TCI states, DCI format 1_1 or 1_2 indicates one PUCCH resource, and the DCI also indicates the uplink transmission scheme used to transmit the PUCCH. When the uplink transmission scheme indicated by the DCI uses the i-th uplink TCI state or joint TCI state, the i-th state refers to the i-th state of the two uplink TCI states or joint TCI states, where i=1, 2.

[0124] Although the above-described embodiments are illustrative of the present invention, the present invention is not limited to these, and appropriate modifications can be made based on the above-described embodiments. For example, each of the above-described embodiments can be used alone, or a combination of two or more of the above-described embodiments can be used.

[0125] As can be seen from the above embodiments, the terminal device can perform uplink transmission based on the first uplink or joint TCI state and / or the second uplink or joint TCI state according to the uplink transmission scheme indicated by the downlink control information (DCI), thereby enabling the terminal device to switch between at least one multi-panel uplink transmission scheme and / or at least one single-panel uplink transmission scheme, thereby achieving more robust uplink transmission performance and improving the throughput or reliability of uplink transmission.

[0126] <Example of the second aspect> In the embodiments of the present invention, a signal receiving method is provided, and will be described from the perspective of a network device. The embodiments of the present invention may be used in combination with the embodiments of the first aspect, or may be implemented independently. Here, descriptions of the same content as the embodiments of the first aspect will be omitted.

[0127] 11 is a diagram illustrating a signal receiving method according to an embodiment of the present invention. As shown in FIG. 11, the method includes:

[0128] 1101: A network device sends a transmission configuration indication (TCI) status indication, the TCI status indication indicating a first uplink or joint TCI status and a second uplink or joint TCI status; 1102: The network device transmits downlink control information (DCI); and 1103: The network device receives an uplink transmission, in which the terminal device performs the uplink transmission based on the first uplink or joint TCI state and / or the second uplink or joint TCI state according to an uplink transmission scheme indicated by the downlink control information.

[0129] Note that, although the above-mentioned FIG. 11 is used to exemplify an embodiment of the present invention, the present invention is not limited thereto. For example, the execution order of each operation may be adjusted, or some operations may be added or removed. Furthermore, those skilled in the art may make appropriate modifications based on the above content without being limited to the description of the above-mentioned FIG. 11.

[0130] In some embodiments, the downlink control information indicates or activates the uplink transmission, the uplink transmission including: - Physical Uplink Shared Channel (PUSCH) transmission based on a dynamic grant; or - PUSCH transmission based on a Type 2 configured grant; or - Physical Uplink Control Channel (PUCCH) transmission; or - semi-persistent sounding reference signal (SRS) transmission; or - Aperiodic SRS transmission is.

[0131] In some embodiments, the uplink transmission scheme includes: At the same time, a first uplink transmission is performed based on the first uplink or joint TCI state, and a second uplink transmission is performed based on the second uplink or joint TCI state, wherein the first uplink transmission uses a first set of power control parameters and the second uplink transmission uses a second set of power control parameters.

[0132] In some embodiments, the uplink transmission scheme includes: At the same time, a first uplink transmission is performed based on the first uplink or joint TCI state, and a second uplink transmission is performed based on the second uplink or joint TCI state, and the first uplink transmission and the second uplink transmission use a first set of power control parameters.

[0133] In some embodiments, the uplink transmission scheme includes: At the same time, a first uplink transmission is performed based on the first uplink or joint TCI state, and a second uplink transmission is performed based on the second uplink or joint TCI state, and the first uplink transmission and the second uplink transmission use a second set of power control parameters.

[0134] In some embodiments, the uplink transmission scheme includes: A first uplink transmission is performed based on the first uplink or joint TCI state, wherein the first uplink transmission uses a first set of power control parameters.

[0135] In some embodiments, the uplink transmission scheme includes: A second uplink transmission is performed based on the second uplink or joint TCI state, wherein the second uplink transmission uses a second set of power control parameters.

[0136] In some embodiments, the uplink transmission scheme includes: By time division multiplexing (TDM), a first uplink transmission is performed based on the first uplink or joint TCI state, and a second uplink transmission is performed based on the second uplink or joint TCI state, where the first uplink transmission uses a first set of power control parameters and the second uplink transmission uses a second set of power control parameters based first on the first uplink or joint TCI state and then on the second uplink or joint TCI state.

[0137] In some embodiments, the uplink transmission scheme includes: By time division multiplexing (TDM), a first uplink transmission is performed based on the first uplink or joint TCI state, and a second uplink transmission is performed based on the second uplink or joint TCI state, where the first uplink transmission uses a first set of power control parameters and the second uplink transmission uses a second set of power control parameters based first on the second uplink or joint TCI state and then on the first uplink or joint TCI state.

[0138] In some embodiments, the first uplink transmission is based on a first SRS resource set and the second uplink transmission is based on a second SRS resource set.

[0139] The above-described embodiments are provided to exemplify the present invention, but the present invention is not limited to these embodiments. Furthermore, appropriate modifications can be made based on the above-described embodiments. For example, each of the above-described embodiments may be used alone, or a plurality of the above-described embodiments may be used in combination.

[0140] As can be seen from the above embodiments, the terminal device can perform uplink transmission based on the first uplink or joint TCI state and / or the second uplink or joint TCI state according to the uplink transmission scheme indicated by the downlink control information (DCI), thereby enabling the terminal device to switch between at least one multi-panel uplink transmission scheme and / or at least one single-panel uplink transmission scheme, thereby achieving more robust uplink transmission performance and improving the throughput or reliability of uplink transmission.

[0141] <Example of the third aspect> In an embodiment of the present invention, a signal transmission device is provided. The device may be, for example, a terminal device, or one or more components or assemblies provided in the terminal device. Here, a description of the same content as in the embodiment of the first aspect will be omitted.

[0142] FIG. 12 is a diagram showing a signal transmitting device according to an embodiment of the present invention.

[0143] As shown in FIG. 12, the signal transmitting device 1200 includes: A first receiving unit 1201: receives transmission configuration indication (TCI) state indication information, the TCI state indication information indicating a first uplink or joint TCI state and a second uplink or joint TCI state; A second receiving unit 1202: for receiving downlink control information (DCI); and A transmitting unit 1203: performs uplink transmission based on the first uplink or joint TCI state and / or the second uplink or joint TCI state according to an uplink transmission scheme indicated by the downlink control information.

[0144] In some embodiments, the second receiving unit 1202 receives the downlink control information during the first uplink or joint TCI state and the second uplink or joint TCI state.

[0145] In some embodiments, the downlink control information indicates or activates the uplink transmission, the uplink transmission including: - Physical Uplink Shared Channel (PUSCH) transmission based on a dynamic grant; or - PUSCH transmission based on a Type 2 configured grant; or - Physical Uplink Control Channel (PUCCH) transmission; or - semi-persistent sounding reference signal (SRS) transmission; or - Aperiodic SRS transmission is.

[0146] In some embodiments, the uplink transmission scheme includes: simultaneously, performing a first uplink transmission based on the first uplink or joint TCI state, and performing a second uplink transmission based on the second uplink or joint TCI state, wherein the first uplink transmission uses a first set of power control parameters, and the second uplink transmission uses a second set of power control parameters; Wherein, the transmitting unit 1203 uses two panels to simultaneously perform the first uplink transmission and the second uplink transmission to a first transmission receiving point and a second transmission receiving point, respectively.

[0147] In some embodiments, the uplink transmission scheme includes: simultaneously, performing a first uplink transmission based on the first uplink or joint TCI state, and performing a second uplink transmission based on the second uplink or joint TCI state, wherein the first uplink transmission and the second uplink transmission use a first set of power control parameters; Wherein, the transmitting unit 1203 uses two panels to simultaneously perform the first uplink transmission and the second uplink transmission to the first transmission receiving point.

[0148] In some embodiments, the uplink transmission scheme includes: simultaneously, performing a first uplink transmission based on the first uplink or joint TCI state, and performing a second uplink transmission based on the second uplink or joint TCI state, wherein the first uplink transmission and the second uplink transmission use a second set of power control parameters; Wherein, the transmitting unit 1203 uses two panels to simultaneously perform the first uplink transmission and the second uplink transmission to a second transmission receiving point.

[0149] In some embodiments, the uplink transmission scheme includes: performing a first uplink transmission based on the first uplink or joint TCI state, wherein the first uplink transmission uses a first set of power control parameters; Wherein, the transmitting unit 1203 uses one panel to perform the first uplink transmission to a first transmission receiving point.

[0150] In some embodiments, the uplink transmission scheme includes: performing a second uplink transmission based on the second uplink or joint TCI state, wherein the second uplink transmission uses a second set of power control parameters; Wherein, the transmitting unit 1203 uses one panel to perform the second uplink transmission to a second transmission receiving point.

[0151] In some embodiments, the uplink transmission scheme includes: performing a first uplink transmission based on the first uplink or joint TCI state and a second uplink transmission based on the second uplink or joint TCI state using time division multiplexing (TDM), wherein the first uplink transmission uses a first set of power control parameters and the second uplink transmission uses a second set of power control parameters based first on the first uplink or joint TCI state and then on the second uplink or joint TCI state; Wherein, the transmitting unit 1203 first uses one panel to perform the first uplink transmission to a first transmission receiving point, and then uses one panel to perform the second uplink transmission to a second transmission receiving point.

[0152] In some embodiments, the uplink transmission scheme includes: performing a first uplink transmission based on the first uplink or joint TCI state and a second uplink transmission based on the second uplink or joint TCI state using time division multiplexing (TDM), wherein the first uplink transmission uses a first set of power control parameters and the second uplink transmission uses a second set of power control parameters based first on the second uplink or joint TCI state and then on the first uplink or joint TCI state; Wherein, the transmitting unit 1203 first uses one panel to perform the second uplink transmission to the second transmission receiving point, and then uses one panel to perform the first uplink transmission to the first transmission receiving point.

[0153] In some embodiments, the first uplink transmission is based on a first SRS resource set and the second uplink transmission is based on a second SRS resource set.

[0154] In some embodiments, for a multiple transmission reception point (mTRP) based on a single downlink control information (sDCI), the transmitting unit 1203 performs the uplink transmission based on the downlink control information.

[0155] In some embodiments, for multiple transmission reception points (mTRPs) based on multiple downlink control information (mDCIs), the transmitting unit 1203 performs the uplink transmission based on the downlink control information.

[0156] In some embodiments, multiple uplink transmission schemes are configured for a terminal device by RRC signaling, and the downlink control information indicates one uplink transmission scheme from the multiple uplink transmission schemes.

[0157] In some embodiments, a physical uplink control channel (PUCCH) resource is configured by RRC signaling or MAC CE to use one uplink transmission scheme among a plurality of uplink transmission schemes, and when the PUCCH resource is indicated by the DCI, the transmitting unit 1203 transmits the PUCCH using the configured uplink transmission scheme.

[0158] The above-described embodiments are provided to exemplify the present invention, but the present invention is not limited to these embodiments. Furthermore, appropriate modifications can be made based on the above-described embodiments. For example, each of the above-described embodiments may be used alone, or a plurality of the above-described embodiments may be used in combination.

[0159] Although only the components or modules according to the present invention have been described above, the present invention is not limited thereto. The signal transmitting device 1200 may further include other components or modules, and the specific contents of these components or modules can be found in the related art.

[0160] 12 shows the connection relationships or signal directions of each component or module for convenience, but as will be understood by those skilled in the art, various related technologies such as bus connection may be adopted. Each of these components or modules may be realized by hardware such as a processor, memory, transmitter, receiver, etc., and the present invention is not limited to these.

[0161] As can be seen from the above embodiments, the terminal device can perform uplink transmission based on the first uplink or joint TCI state and / or the second uplink or joint TCI state according to the uplink transmission scheme indicated by the downlink control information (DCI), thereby enabling the terminal device to switch between at least one multi-panel uplink transmission scheme and / or at least one single-panel uplink transmission scheme, thereby achieving more robust uplink transmission performance and improving the throughput or reliability of uplink transmission.

[0162] <Example of the fourth aspect> In an embodiment of the present invention, a signal receiving device is provided, which may be, for example, a network device, or one or more components or assemblies provided in the network device, and description of the same content as in the embodiments of the first to third aspects will be omitted here.

[0163] 13 is a diagram illustrating a signal receiving device according to an embodiment of the present invention. As shown in FIG. 13, the signal receiving device 1300 includes: A first sending unit 1301: sends transmission configuration indication (TCI) state indication information, where the TCI state indication information indicates a first uplink or joint TCI state and a second uplink or joint TCI state; A second transmitting unit 1302: for transmitting downlink control information (DCI); and A receiving unit 1303: receives an uplink transmission, in which the terminal device performs the uplink transmission based on the first uplink or joint TCI state and / or the second uplink or joint TCI state according to the uplink transmission scheme indicated by the downlink control information.

[0164] In some embodiments, the downlink control information indicates or activates the uplink transmission, the uplink transmission including: - Physical Uplink Shared Channel (PUSCH) transmission based on a dynamic grant; or - PUSCH transmission based on a Type 2 configured grant; or - Physical Uplink Control Channel (PUCCH) transmission; or - semi-persistent sounding reference signal (SRS) transmission; or - Aperiodic SRS transmission is.

[0165] In some embodiments, the uplink transmission scheme includes at least one of the following: At the same time, perform a first uplink transmission based on the first uplink or joint TCI state, and perform a second uplink transmission based on the second uplink or joint TCI state, where the first uplink transmission uses a first set of power control parameters and the second uplink transmission uses a second set of power control parameters; At the same time, performing a first uplink transmission based on the first uplink or joint TCI state, and performing a second uplink transmission based on the second uplink or joint TCI state, wherein the first uplink transmission and the second uplink transmission use a first set of power control parameters; At the same time, performing a first uplink transmission based on the first uplink or joint TCI state and performing a second uplink transmission based on the second uplink or joint TCI state, wherein the first uplink transmission and the second uplink transmission use a second set of power control parameters; performing a first uplink transmission based on the first uplink or joint TCI state, wherein the first uplink transmission uses a first set of power control parameters; performing a second uplink transmission based on the second uplink or joint TCI state, wherein the second uplink transmission uses a second set of power control parameters; performing a first uplink transmission based on the first uplink or joint TCI state and a second uplink transmission based on the second uplink or joint TCI state using time division multiplexing (TDM), wherein the first uplink transmission uses a first set of power control parameters and the second uplink transmission uses a second set of power control parameters based first on the first uplink or joint TCI state and then on the second uplink or joint TCI state; and By time division multiplexing (TDM), a first uplink transmission is performed based on the first uplink or joint TCI state, and a second uplink transmission is performed based on the second uplink or joint TCI state, where the first uplink transmission uses a first set of power control parameters and the second uplink transmission uses a second set of power control parameters based first on the second uplink or joint TCI state and then on the first uplink or joint TCI state.

[0166] In some embodiments, the first uplink transmission is based on a first SRS resource set and the second uplink transmission is based on a second SRS resource set.

[0167] The above-described embodiments are provided to exemplify the present invention, but the present invention is not limited to these embodiments. Furthermore, appropriate modifications can be made based on the above-described embodiments. For example, each of the above-described embodiments may be used alone, or a plurality of the above-described embodiments may be used in combination.

[0168] Although only the components or modules according to the present invention have been described above, the present invention is not limited thereto. The signal receiving device 1300 may further include other components or modules, and the specific contents of these components or modules can be found in the related art.

[0169] 13 shows the connection relationships or signal directions of each component or module for convenience, but as will be understood by those skilled in the art, various related technologies such as bus connection may be adopted. Each of these components or modules may be realized by hardware such as a processor, memory, transmitter, receiver, etc., and the present invention is not limited to these.

[0170] As can be seen from the above embodiments, the terminal device can perform uplink transmission based on the first uplink or joint TCI state and / or the second uplink or joint TCI state according to the uplink transmission scheme indicated by the downlink control information (DCI), thereby enabling the terminal device to switch between at least one multi-panel uplink transmission scheme and / or at least one single-panel uplink transmission scheme, thereby achieving more robust uplink transmission performance and improving the throughput or reliability of uplink transmission.

[0171] <Example of the fifth aspect> An embodiment of the present invention provides a communication system, which can be seen from FIG. 1, and the description of the same contents as those of the first to fourth aspects will be omitted here.

[0172] In some embodiments, the communication system 100 may include at least the following: a network device; transmitting transmission configuration indication (TCI) state indication information, the TCI state indication information indicating a first uplink or joint TCI state and a second uplink or joint TCI state, transmitting downlink control information (DCI), and receiving uplink transmissions; and Terminal device: Receives the transmission configuration indication (TCI) state indication information, receives the downlink control information (DCI), and performs the uplink transmission based on the first uplink or joint TCI state and / or the second uplink or joint TCI state according to an uplink transmission scheme indicated by the downlink control information.

[0173] In the embodiment of the present invention, a network device is further provided, which may be, for example, a base station, but the present invention is not limited thereto and may be other network devices.

[0174] 14 is a block diagram of a network device according to an embodiment of the present invention. As shown in FIG. 14, the network device 1400 may include a processor 1410 (e.g., a central processing unit (CPU)) and a memory 1420, which is connected to the processor 1410. The memory 1420 can store various data and can also store a program 1430 for information processing, and can execute the program 1430 under the control of the processor 1410.

[0175] For example, the processor 1410 may be configured to execute a program to implement the signal receiving method described in the embodiment of the second aspect. For example, the processor 1410 may be configured to perform the following controls: send transmission configuration indication (TCI) state indication information, where the TCI state indication information indicates a first uplink or joint TCI state and a second uplink or joint TCI state; send downlink control information (DCI); and receive uplink transmission, where a terminal device performs the uplink transmission based on the first uplink or joint TCI state and / or the second uplink or joint TCI state according to an uplink transmission scheme indicated by the downlink control information.

[0176] 14, the network device 1400 may further include a transceiver 1440 and an antenna 1450, among which the functions of these components are the same as those of the prior art, and detailed description thereof will be omitted here. Note that the network device 1400 does not need to include all the components shown in Fig. 14. The network device 1400 may further include components not shown in Fig. 14, but reference can be made to the prior art for such components.

[0177] Although the embodiment of the present invention further provides a terminal device, the present invention is not limited thereto and may further include other devices.

[0178] 15 is a diagram illustrating a terminal device according to an embodiment of the present invention. As shown in FIG. 15, the terminal device 1500 may include a processor 1510 and a memory 1520, where the memory 1520 stores data and programs and is connected to the processor 1510. Note that this diagram is merely an example, and other types of components may be used to supplement or replace this component to achieve telecommunications or other functions.

[0179] For example, the processor 1510 may be configured to execute a program to implement the signal transmission method described in the embodiment of the first aspect. For example, the processor 1510 may be configured to perform the following controls: receive transmission configuration indication (TCI) state indication information, where the TCI state indication information indicates a first uplink or joint TCI state and a second uplink or joint TCI state; receive downlink control information (DCI); and perform uplink transmission based on the first uplink or joint TCI state and / or the second uplink or joint TCI state according to an uplink transmission scheme indicated by the downlink control information.

[0180] As shown in Fig. 15, the terminal device 1500 may further include a communication module 1530, an input unit 1540, a display 1550, a power supply 1560, etc. The functions of these components are the same as those of the prior art, and detailed descriptions thereof will be omitted here. Note that the terminal device 1500 does not need to include all of the components shown in Fig. 15. Furthermore, the terminal device 1500 may further include components not shown in Fig. 15, but reference can be made to the prior art for such components.

[0181] An embodiment of the present invention further provides a computer program, which, when executed by a terminal device, causes the terminal device to perform the signal transmission method described in the embodiment of the first aspect.

[0182] An embodiment of the present invention further provides a storage medium storing a computer program, wherein the computer program causes a terminal device to perform the signal transmission method according to the embodiment of the first aspect.

[0183] An embodiment of the present invention further provides a computer program, which, when executed by a network device, causes the network device to perform the signal receiving method described in the embodiment of the second aspect.

[0184] An embodiment of the present invention further provides a storage medium storing a computer program, wherein the computer program causes a network device to perform the signal receiving method according to the embodiment of the second aspect.

[0185] The above-described devices and methods may be realized by software or hardware, or by a combination of hardware and software. The present invention further relates to a computer-readable program as described below, which, when executed by a logic component, causes the logic component to realize the above-described devices or components, or to perform each of the above-described methods or steps. The logic component may be, for example, an FPGA (Field Programmable Gate Array), a microprocessor, or a processing unit used in a computer. The present invention also relates to a storage medium, such as a hard disk, magnetic disk, optical hard disk, DVD, or flash memory, that stores the above-described program.

[0186] Furthermore, one or more combinations of the functional blocks illustrated in the figures and / or one or more combinations of the functional blocks may be implemented as 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 component, a discrete gate or transistor logic component, a discrete hardware assembly, or any other suitable combination for performing the functions described herein. Also, one or more combinations of the functional blocks illustrated in the figures and / or one or more combinations of the functional blocks may be further implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors communicatively coupled with a DSP, or any other configuration.

[0187] Although the preferred embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and any modifications to the present invention that do not depart from the spirit of the present invention fall within the technical scope of the present invention.

[0188] Furthermore, the following additional notes are disclosed regarding the above-described embodiments.

[0189] (Appendix 1) 1. A signal transmission method, comprising: The method comprises: a terminal device receives transmission configuration indication (TCI) state indication information, the TCI state indication information indicating a first uplink or joint TCI state and a second uplink or joint TCI state; The terminal device receives downlink control information (DCI); and The method includes the terminal device performing uplink transmission based on the first uplink or joint TCI state and / or the second uplink or joint TCI state in accordance with an uplink transmission scheme indicated by the downlink control information.

[0190] (Appendix 2) 2. The method of claim 1, comprising: The terminal device receives the downlink control information during the active period of the first uplink or joint TCI state and the second uplink or joint TCI state.

[0191] (Appendix 3) 2. The method of claim 1, comprising: The downlink control information indicates or activates the uplink transmission, and the uplink transmission includes: Physical uplink shared channel (PUSCH) transmission based on a dynamic grant; or PUSCH transmission based on a Type 2 configured grant; or Physical Uplink Control Channel (PUCCH) transmission; or Semi-persistent Sounding Reference Signal (SRS) transmission; or Aperiodic SRS transmission That's the method.

[0192] (Appendix 4) 4. The method of any one of claims 1 to 3, comprising: The uplink transmission scheme includes: simultaneously performing a first uplink transmission based on the first uplink or joint TCI state, and performing a second uplink transmission based on the second uplink or joint TCI state, wherein the first uplink transmission uses a first set of power control parameters, and the second uplink transmission uses a second set of power control parameters.

[0193] (Appendix 5) 5. The method of claim 4, The terminal device uses two panels to simultaneously perform the first uplink transmission and the second uplink transmission to a first transmission receiving point and a second transmission receiving point, respectively.

[0194] (Appendix 6) 4. The method of any one of claims 1 to 3, comprising: The uplink transmission scheme includes: At the same time, a first uplink transmission is performed based on the first uplink or joint TCI state, and a second uplink transmission is performed based on the second uplink or joint TCI state, wherein the first uplink transmission and the second uplink transmission use a first set of power control parameters.

[0195] (Appendix 7) 7. The method of claim 6, The terminal device uses two panels to simultaneously perform the first uplink transmission and the second uplink transmission to a first transmission receiving point.

[0196] (Appendix 8) 4. The method of any one of claims 1 to 3, comprising: The uplink transmission scheme includes: simultaneously performing a first uplink transmission based on the first uplink or joint TCI state, and performing a second uplink transmission based on the second uplink or joint TCI state, wherein the first uplink transmission and the second uplink transmission use a second set of power control parameters.

[0197] (Appendix 9) 9. The method of claim 8, The terminal device uses two panels to simultaneously perform the first uplink transmission and the second uplink transmission to a second transmission receiving point.

[0198] (Appendix 10) 10. The method of any one of claims 1 to 9, comprising: The uplink transmission scheme includes: A method comprising: performing a first uplink transmission based on the first uplink or joint TCI state, wherein the first uplink transmission uses a first set of power control parameters.

[0199] (Appendix 11) 11. The method of claim 10, The terminal device performs the first uplink transmission to a first transmission reception point using one panel.

[0200] (Appendix 12) 10. The method of any one of claims 1 to 9, comprising: The uplink transmission scheme includes: performing a second uplink transmission based on the second uplink or joint TCI state, wherein the second uplink transmission uses a second set of power control parameters.

[0201] (Appendix 13) 13. The method of claim 12, The terminal device performs the second uplink transmission to a second transmission reception point using one panel.

[0202] (Appendix 14) 10. The method of any one of claims 1 to 9, comprising: The uplink transmission scheme includes: A method for performing a first uplink transmission based on the first uplink or joint TCI state by time division multiplexing (TDM), and performing a second uplink transmission based on the second uplink or joint TCI state, wherein the first uplink transmission uses a first set of power control parameters and the second uplink transmission uses a second set of power control parameters based first on the first uplink or joint TCI state and then on the second uplink or joint TCI state.

[0203] (Appendix 15) 15. The method of claim 14, A method in which the terminal equipment first uses one panel to perform the first uplink transmission to a first transmission reception point, and then uses one panel to perform the second uplink transmission to a second transmission reception point.

[0204] (Appendix 16) 10. The method of any one of claims 1 to 9, comprising: The uplink transmission scheme includes: A method for performing a first uplink transmission based on the first uplink or joint TCI state by time division multiplexing (TDM), and performing a second uplink transmission based on the second uplink or joint TCI state, wherein the first uplink transmission uses a first set of power control parameters and the second uplink transmission uses a second set of power control parameters based first on the second uplink or joint TCI state and then on the first uplink or joint TCI state.

[0205] (Appendix 17) 17. The method of claim 16, A method in which the terminal equipment first uses one panel to perform the second uplink transmission to a second transmission reception point, and then uses one panel to perform the first uplink transmission to a first transmission reception point.

[0206] (Appendix 18) 18. The method of any one of claims 4 to 17, comprising: The method, wherein the first uplink transmission is based on a first SRS resource set and the second uplink transmission is based on a second SRS resource set.

[0207] (Appendix 19) 2. The method of claim 1, comprising: A method in which, for a multiple transmission reception point (mTRP) based on a single downlink control information (sDCI), the terminal device performs the uplink transmission based on the downlink control information.

[0208] (Appendix 20) 2. The method of claim 1, comprising: A method for multiple transmission reception points (mTRPs) based on multiple downlink control information (mDCI), in which the terminal device performs the uplink transmission based on the downlink control information.

[0209] (Appendix 21) 21. The method of any one of claims 1 to 20, comprising: A method for configuring a plurality of uplink transmission schemes for the terminal device by RRC signaling, and indicating one uplink transmission scheme of the plurality of uplink transmission schemes by the downlink control information.

[0210] (Appendix 22) 22. The method of any one of claims 1 to 21, comprising: A method in which a physical uplink control channel (PUCCH) resource is configured by RRC signaling or MAC CE to use one uplink transmission scheme among a plurality of uplink transmission schemes, and when a PUCCH resource is indicated by the DCI, the terminal device transmits the PUCCH using the configured uplink transmission scheme.

[0211] (Appendix 23) 2. The method of claim 1, comprising: For a multiple transmission reception point (mTRP) based on a single downlink control information (sDCI), the uplink transmission scheme includes: simultaneously, performing a first uplink transmission based on the first uplink or joint TCI state, and performing a second uplink transmission based on the second uplink or joint TCI state, wherein the first uplink transmission uses a first set of power control parameters, and the second uplink transmission uses a second set of power control parameters; and At least one of the following transmission schemes: At the same time, perform a first uplink transmission based on the first uplink or joint TCI state, and perform a second uplink transmission based on the second uplink or joint TCI state, wherein the first uplink transmission and the second uplink transmission use a first set of power control parameters; At the same time, performing a first uplink transmission based on the first uplink or joint TCI state and performing a second uplink transmission based on the second uplink or joint TCI state, wherein the first uplink transmission and the second uplink transmission use a second set of power control parameters; performing a first uplink transmission based on the first uplink or joint TCI state, wherein the first uplink transmission uses a first set of power control parameters; performing a second uplink transmission based on the second uplink or joint TCI state, wherein the second uplink transmission uses a second set of power control parameters; performing a first uplink transmission based on the first uplink or joint TCI state and a second uplink transmission based on the second uplink or joint TCI state using time division multiplexing (TDM), wherein the first uplink transmission uses a first set of power control parameters and the second uplink transmission uses a second set of power control parameters based first on the first uplink or joint TCI state and then on the second uplink or joint TCI state; and A method for performing a first uplink transmission based on the first uplink or joint TCI state by time division multiplexing (TDM), and performing a second uplink transmission based on the second uplink or joint TCI state, wherein the first uplink transmission uses a first set of power control parameters and the second uplink transmission uses a second set of power control parameters based first on the second uplink or joint TCI state and then on the first uplink or joint TCI state.

[0212] (Appendix 24) 2. The method of claim 1, comprising: For multiple transmission reception points (mTRPs) based on multiple downlink control information (mDCIs), the uplink transmission scheme includes: simultaneously, performing a first uplink transmission based on the first uplink or joint TCI state and performing a second uplink transmission based on the second uplink or joint TCI state, wherein the first uplink transmission and the second uplink transmission use a first set of power control parameters; and At the same time, a first uplink transmission is performed based on the first uplink or joint TCI state, and a second uplink transmission is performed based on the second uplink or joint TCI state, wherein the first uplink transmission and the second uplink transmission use a second set of power control parameters.

[0213] (Appendix 25) 2. The method of claim 1, comprising: For multiple transmission reception points (mTRPs) based on multiple downlink control information (mDCIs), the uplink transmission scheme includes: simultaneously performing a first uplink transmission based on the first uplink or joint TCI state and a second uplink transmission based on the second uplink or joint TCI state, wherein the first uplink transmission and the second uplink transmission use a first set of power control parameters; and / or simultaneously, performing a first uplink transmission based on the first uplink or joint TCI state and performing a second uplink transmission based on the second uplink or joint TCI state, wherein the first uplink transmission and the second uplink transmission use a second set of power control parameters; and At least one of the following transmission schemes: performing a first uplink transmission based on the first uplink or joint TCI state, wherein the first uplink transmission uses a first set of power control parameters; performing a second uplink transmission based on the second uplink or joint TCI state, wherein the second uplink transmission uses a second set of power control parameters; performing a first uplink transmission based on the first uplink or joint TCI state and a second uplink transmission based on the second uplink or joint TCI state using time division multiplexing (TDM), wherein the first uplink transmission uses a first set of power control parameters and the second uplink transmission uses a second set of power control parameters based first on the first uplink or joint TCI state and then on the second uplink or joint TCI state; and A method for performing a first uplink transmission based on the first uplink or joint TCI state by time division multiplexing (TDM), and performing a second uplink transmission based on the second uplink or joint TCI state, wherein the first uplink transmission uses a first set of power control parameters and the second uplink transmission uses a second set of power control parameters based first on the second uplink or joint TCI state and then on the first uplink or joint TCI state.

[0214] (Appendix 26) 1. A signal reception method, comprising: The method comprises: A network device sends a transmission configuration indication (TCI) status indication, the TCI status indication indicating a first uplink or joint TCI status and a second uplink or joint TCI status; The network device transmits downlink control information (DCI); and The method includes the network equipment receiving an uplink transmission, wherein the terminal equipment performs the uplink transmission based on the first uplink or joint TCI state and / or the second uplink or joint TCI state according to an uplink transmission scheme indicated by the downlink control information.

[0215] (Appendix 27) 27. The method of claim 26, The downlink control information indicates or activates the uplink transmission, and the uplink transmission includes: Physical uplink shared channel (PUSCH) transmission based on a dynamic grant; or PUSCH transmission based on a Type 2 configured grant; or Physical Uplink Control Channel (PUCCH) transmission; or Semi-persistent Sounding Reference Signal (SRS) transmission; or Aperiodic SRS transmission That's the method.

[0216] (Appendix 28) 28. The method according to claim 26 or 27, The uplink transmission scheme includes: simultaneously performing a first uplink transmission based on the first uplink or joint TCI state, and performing a second uplink transmission based on the second uplink or joint TCI state, wherein the first uplink transmission uses a first set of power control parameters, and the second uplink transmission uses a second set of power control parameters.

[0217] (Appendix 29) 28. The method according to claim 26 or 27, The uplink transmission scheme includes: At the same time, a first uplink transmission is performed based on the first uplink or joint TCI state, and a second uplink transmission is performed based on the second uplink or joint TCI state, wherein the first uplink transmission and the second uplink transmission use a first set of power control parameters.

[0218] (Appendix 30) 28. The method according to claim 26 or 27, The uplink transmission scheme includes: At the same time, a first uplink transmission is performed based on the first uplink or joint TCI state, and a second uplink transmission is performed based on the second uplink or joint TCI state, wherein the first uplink transmission and the second uplink transmission use a second set of power control parameters.

[0219] (Appendix 31) 31. The method of any one of claims 26 to 30, comprising: The uplink transmission scheme includes: A method comprising: performing a first uplink transmission based on the first uplink or joint TCI state, wherein the first uplink transmission uses a first set of power control parameters.

[0220] (Appendix 32) 31. The method of any one of claims 26 to 30, comprising: The uplink transmission scheme includes: performing a second uplink transmission based on the second uplink or joint TCI state, wherein the second uplink transmission uses a second set of power control parameters.

[0221] (Appendix 33) 31. The method of any one of claims 26 to 30, comprising: The uplink transmission scheme includes: A method for performing a first uplink transmission based on the first uplink or joint TCI state by time division multiplexing (TDM), and performing a second uplink transmission based on the second uplink or joint TCI state, wherein the first uplink transmission uses a first set of power control parameters and the second uplink transmission uses a second set of power control parameters based first on the first uplink or joint TCI state and then on the second uplink or joint TCI state.

[0222] (Appendix 34) 31. The method of any one of claims 26 to 30, comprising: The uplink transmission scheme includes: A method for performing a first uplink transmission based on the first uplink or joint TCI state by time division multiplexing (TDM), and performing a second uplink transmission based on the second uplink or joint TCI state, wherein the first uplink transmission uses a first set of power control parameters and the second uplink transmission uses a second set of power control parameters based first on the second uplink or joint TCI state and then on the first uplink or joint TCI state.

[0223] (Appendix 35) 35. The method of any one of claims 27 to 34, comprising: The method, wherein the first uplink transmission is based on a first SRS resource set and the second uplink transmission is based on a second SRS resource set.

[0224] (Appendix 36) 1. A signal transmission method, comprising: The method comprises: a terminal device receives transmission configuration indication (TCI) state indication information, the TCI state indication information indicating a first uplink or joint TCI state and a second uplink or joint TCI state; The terminal device receives downlink control information (DCI); and A method in which the terminal device transmits a physical uplink control channel (PUCCH) based on the first uplink or joint TCI state and / or the second uplink or joint TCI state on a PUCCH resource indicated by the downlink control information.

[0225] (Appendix 37) 37. The method of claim 36, A method in which the PUCCH resource is configured to use one uplink transmission scheme among a plurality of uplink transmission schemes by RRC signaling or MAC CE, and the terminal device transmits the PUCCH using the configured uplink transmission scheme.

[0226] (Appendix 38) 1. A signal reception method, comprising: The method comprises: A network device sends a transmission configuration indication (TCI) status indication, the TCI status indication indicating a first uplink or joint TCI status and a second uplink or joint TCI status; The network device transmits downlink control information (DCI); and The method includes the network device receiving a PUCCH, wherein the terminal device transmits the PUCCH on a physical uplink control channel (PUCCH) resource indicated by the downlink control information based on the first uplink or joint TCI state and / or the second uplink or joint TCI state.

[0227] (Appendix 39) 39. The method of claim 38, A method in which the PUCCH resource is configured to use one uplink transmission scheme among a plurality of uplink transmission schemes by RRC signaling or MAC CE, and the terminal device transmits the PUCCH using the configured uplink transmission scheme.

[0228] (Appendix 40) A terminal device, a memory and a processor; A terminal device, wherein the memory stores a computer program, and the processor is configured to execute the computer program to implement the signal transmission method described in any one of Supplementary Notes 1 to 25, 36, and 37.

[0229] (Appendix 41) A network device, a memory and a processor; A network device, wherein the memory stores a computer program, and the processor is configured to execute the computer program to implement a signal reception method described in any one of Supplementary Notes 26 to 35, 38, and 39.

Claims

1. 1. A device for transmitting a signal, comprising: a receiver for receiving TCI status indication information and receiving downlink control information, the TCI status indication information including information on a first TCI status and information on a second TCI status; a processor for determining a transmission scheme from a plurality of transmission schemes, the plurality of transmission schemes including a first scheme, the first scheme being a scheme for simultaneously performing a first uplink transmission based on the first TCI state and a second uplink transmission based on the second TCI state; and a transmitter for performing uplink transmission based on the one transmission scheme; the plurality of transmission schemes further include a second scheme, a third scheme, a fourth scheme, and / or a fifth scheme; the second scheme is a scheme for performing a first uplink transmission based on the first TCI state; the third scheme is a scheme for performing a second uplink transmission based on the second TCI state; the fourth scheme is a scheme in which a first uplink transmission based on the first TCI state is performed by time division multiplexing, and a second uplink transmission based on the second TCI state is performed after the first uplink transmission; the fifth scheme is a scheme in which a first uplink transmission based on the first TCI state is performed by time division multiplexing, and a second uplink transmission based on the second TCI state is performed before the first uplink transmission; The receiver further receives a first radio resource control signaling or a second radio resource control signaling; when the receiver receives the first radio resource control signaling, one of the first scheme, the second scheme, and the third scheme is indicated by the downlink control information for a physical uplink shared channel; when the receiver receives the second radio resource control signaling, one of the second scheme, the third scheme, the fourth scheme, and the fifth scheme is indicated by the downlink control information for a physical uplink shared channel.

2. 10. The apparatus of claim 1, The receiver further receives the downlink control information during an active period of the first TCI state and the second TCI state.

3. 10. The apparatus of claim 1, The downlink control information indicates or activates the uplink transmission, the uplink transmission comprising: Physical uplink shared channel transmission based on dynamic grants; or Physical uplink shared channel transmission based on a Type 2 configuration grant; or Physical uplink control channel transmission; or Semi-persistent sounding reference signal transmission; or Aperiodic Sounding Reference Signal Transmission 1. An apparatus comprising:

4. 10. The apparatus of claim 1, the first uplink transmission uses a first set of power control parameters, and the second uplink transmission uses a second set of power control parameters; When the processor determines the first scheme as the one transmission scheme, the transmitter uses two panels to simultaneously perform the first uplink transmission and the second uplink transmission to a first transmission reception point and a second transmission reception point, respectively.

5. 10. The apparatus of claim 1, the first uplink transmission and the second uplink transmission use a first set of power control parameters; When the processor determines the first scheme as the one transmission scheme, the transmitter uses two panels to simultaneously perform the first uplink transmission and the second uplink transmission to a first transmission reception point.

6. 10. The apparatus of claim 1, When the processor determines the second scheme as the one transmission scheme, the transmitter performs the first uplink transmission to a first transmission reception point using one panel.

7. 10. The apparatus of claim 1, When the processor determines the third scheme as the one transmission scheme, the transmitter performs the second uplink transmission to a second transmission reception point using one panel.

8. 10. The apparatus of claim 1, The transmitter further comprises: When the processor determines the fourth scheme as the one transmission scheme, one panel is used to perform the first uplink transmission to a first transmission reception point, and after the first uplink transmission, one panel is used to perform the second uplink transmission to a second transmission reception point; When the processor determines the fifth scheme as the one transmission scheme, one panel is used to perform the first uplink transmission to a first transmission reception point, and one panel is used to perform the second uplink transmission to a second transmission reception point before performing the first uplink transmission. The apparatus is configured to:

9. 10. The apparatus of claim 1, The first uplink transmission is based on a first sounding reference signal resource set, and the second uplink transmission is based on a second sounding reference signal resource set.

10. 10. The apparatus of claim 1, For multiple transmission reception points based on single downlink control information, the transmitter performs the uplink transmission based on the downlink control information.

11. 10. The apparatus of claim 1, For multiple transmission reception points based on multiple downlink control information, the transmitter performs the uplink transmission based on the downlink control information.

12. 10. The apparatus of claim 1, physical uplink control channel resources are configured by radio resource control signaling to use one uplink transmission scheme of a plurality of uplink transmission schemes; When the downlink control information indicates a physical uplink control channel resource, the transmitter transmits the physical uplink control channel using a configured uplink transmission scheme.

13. 1. A device for receiving a signal, comprising: a transmitter for transmitting TCI status indication information to a terminal device and transmitting downlink control information to the terminal device, the TCI status indication information including information on a first TCI status and information on a second TCI status; and a receiver for receiving uplink transmission from the terminal device based on one transmission scheme, the one transmission scheme being determined by the terminal device from among a plurality of transmission schemes, the plurality of transmission schemes including a first scheme, the first scheme being a scheme for simultaneously performing a first uplink transmission based on the first TCI state and a second uplink transmission based on the second TCI state; the plurality of transmission schemes further include a second scheme, a third scheme, a fourth scheme, and / or a fifth scheme; the second scheme is a scheme for performing a first uplink transmission based on the first TCI state; the third scheme is a scheme for performing a second uplink transmission based on the second TCI state; the fourth scheme is a scheme in which a first uplink transmission based on the first TCI state is performed by time division multiplexing, and a second uplink transmission based on the second TCI state is performed after the first uplink transmission; the fifth scheme is a scheme in which a first uplink transmission based on the first TCI state is performed by time division multiplexing, and a second uplink transmission based on the second TCI state is performed before the first uplink transmission; The transmitter further transmits a first radio resource control signaling or a second radio resource control signaling; when the transmitter transmits the first radio resource control signaling, one of the first scheme, the second scheme, and the third scheme is indicated by the downlink control information for a physical uplink shared channel; When the transmitter transmits the second radio resource control signaling, one of the second scheme, the third scheme, the fourth scheme, and the fifth scheme is indicated by the downlink control information for a physical uplink shared channel.

14. 14. The apparatus of claim 13, The apparatus, wherein the one transmission scheme is indicated by the downlink control information.

15. 1. A communication system comprising: Including network equipment and terminal equipment, The network device transmits TCI status indication information, where the TCI status indication information includes information on a first TCI status and information on a second TCI status; and transmits downlink control information. The terminal device receives the TCI status indication information; receives the downlink control information; determines one transmission scheme from a plurality of transmission schemes; and performs uplink transmission based on the one transmission scheme. the plurality of transmission schemes include a first scheme, wherein a first uplink transmission based on the first TCI state and a second uplink transmission based on the second TCI state are simultaneously performed; the plurality of transmission schemes further include a second scheme, a third scheme, a fourth scheme, and / or a fifth scheme; the second scheme is a scheme for performing a first uplink transmission based on the first TCI state; the third scheme is a scheme for performing a second uplink transmission based on the second TCI state; the fourth scheme is a scheme in which a first uplink transmission based on the first TCI state is performed by time division multiplexing, and a second uplink transmission based on the second TCI state is performed after the first uplink transmission; the fifth scheme is a scheme in which a first uplink transmission based on the first TCI state is performed by time division multiplexing, and a second uplink transmission based on the second TCI state is performed before the first uplink transmission; The terminal device further receives a first radio resource control signaling or a second radio resource control signaling; When the terminal device receives the first radio resource control signaling, one of the first scheme, the second scheme, and the third scheme is indicated by the downlink control information for a physical uplink shared channel; and When the terminal device receives the second radio resource control signaling, one of the second scheme, the third scheme, the fourth scheme, and the fifth scheme is indicated by the downlink control information for a physical uplink shared channel.

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