Signal transmitting and receiving apparatus and method

Abstract

Provided in an embodiment of the present application are a signal transmitting and receiving device and method, the method comprising: 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 equipment receives downlink control information (DCI); and the terminal device performs uplink transmission based on the first uplink or combined TCI state and / or the second uplink or combined TCI state according to an uplink transmission scheme indicated by the downlink control information.

Description

Signal sending and receiving device and method Technical Field

[0001] The embodiments of the present application relate to the field of communication technologies. Background Art

[0002] During the standardization process of Release 17 (Rel-17), the 3GPP standardization organization carried out standardization work on the unified transmission configuration indication (TCI). The unified TCI in Rel-17 is designed primarily for the sTRP (single transmission and reception point) scenario.

[0003] With the advancement of standardization, multiple transmission and reception point (mTRP) has become an important scenario in 5G NR systems. Through mTRP-based transmission, the goal of improving throughput or reliability can be achieved.

[0004] In previous standardization work, the transmission of the Physical Downlink Shared Channel (PDSCH) based on mTRP was standardized in Rel-16; and the transmission of the Physical Downlink Control Channel (PDCCH), Physical Uplink Shared Channel (PUSCH), and Physical Uplink Control Channel (PUCCH) based on mTRP were standardized in Rel-17. Among them, 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 above introduction to the technical background is only for the convenience of providing a clear and complete description of the technical solutions of this application and for the convenience of understanding by those skilled in the art. It cannot be considered that the above technical solutions are well known to those skilled in the art simply because these solutions are explained in the background technology part of this application.

[0006] Summary of the Invention

[0007] However, the inventors found that the unified TCI in Rel-17 is only applicable to the sTRP scenario. Considering the importance of mTRP, it is necessary to design a corresponding unified TCI mechanism for the mTRP scenario.

[0008] In the Rel-17 unified TCI scenario for sTRP (single transmission and reception point), the network device uses radio resource control (RRC) signaling to configure M (M≥1) TCI states (TCI state) for the terminal device, uses medium access control (MAC) control elements (CE) to activate N (1≤N≤M) TCI states in M ​​TCI states, and uses downlink control information (DCI) to indicate L (1≤L≤N) TCI states in N TCI states.

[0009] A TCI state (TCI for short) may include or correspond to one or two source reference signals (source RS). The source RS can provide Quasi Co-Location (QCL) information for downlink reception and is referred to as a downlink source RS. The source RS can also provide a reference for the uplink transmit spatial filter (UL TX spatial filter) and is referred to as an uplink source RS.

[0010] The source reference signal can provide beam information for the destination channel / signal. For example, the beam used by the terminal device to receive the destination channel / signal is the same as the beam used to receive the downlink source reference signal. For another example, the beam used by the terminal device to transmit the destination channel / signal is the same as the beam used to transmit the uplink source reference signal. For another example, the beam used by the terminal device to transmit the destination channel / signal and the beam used to receive the downlink source reference signal are reciprocal, that is, they use beams in opposite directions.

[0011] Therefore, the indication or update of the TCI state actually also includes the indication or update of 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 contained in the downlink TCI state is a downlink source reference signal, the source reference signal contained in the uplink TCI state is an uplink source reference signal, and the source reference signal contained in the joint TCI state is both a downlink source reference signal and an uplink source reference signal. The joint TCI state acts on both the downlink beam (receive beam) and the uplink beam (transmit beam). In other words, the downlink beam and the uplink beam use the same beam, but the beam directions are opposite, that is, there is reciprocity between the uplink and downlink beams. The downlink TCI state only acts on the downlink beam. The uplink TCI state only acts on the uplink beam. The uplink beam is also called the uplink transmit spatial filter. The TCI field can indicate a joint DL / UL TCI state, or a separate DL / UL TCI state, that is, 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.

[0012] For the unified TCI of Rel-17, for the joint TCI state, one TCI field indicates one joint TCI state; for the independent TCI state, one TCI field indicates one downlink TCI state, or one uplink TCI state, or one downlink TCI state and one uplink TCI state.

[0013] For the unified TCI of mTRP, a terminal device can be indicated with two uplink TCI states or a combined TCI state. For a terminal device capable of simultaneous multi-panel uplink transmission, it can use two panels for simultaneous transmission based on the two uplink TCI states or the combined TCI state. For example, the terminal device can perform simultaneous multi-panel transmission during the active period of the two uplink TCI states or the combined TCI state.

[0014] Considering factors such as mobility, channel state changes, and channel blockage, if a terminal device consistently performs multiple uplink panels simultaneously within the active timeframe of two TCI states, it may be unable to adapt to these rapid changes, resulting in a loss of throughput or reliability. Furthermore, unnecessary multi-panel transmissions may cause additional interference to other devices. To address these issues, a more ideal approach would be to provide terminal devices with greater flexibility to switch between multiple uplink transmission schemes.

[0015] To address at least one of the above problems, embodiments of the present application provide a signal sending and receiving device and method.

[0016] According to another aspect of an embodiment of the present application, a signal transmission method is provided, including:

[0017] The terminal device receives 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;

[0018] The terminal device receives downlink control information (DCI); and

[0019] 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 the uplink transmission scheme indicated by the downlink control information.

[0020] According to another aspect of an embodiment of the present application, a signal receiving method is provided, including:

[0021] The network device 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;

[0022] The network device sends downlink control information (DCI); and

[0023] The network device receives 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.

[0024] According to another aspect of an embodiment of the present application, a signal sending device is provided, including:

[0025] a first receiving unit configured to receive transmission configuration indication (TCI) state indication information, wherein the TCI state indication information indicates a first uplink or joint TCI state and a second uplink or joint TCI state;

[0026] a second receiving unit configured to receive downlink control information (DCI); and

[0027] and a sending unit configured to 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.

[0028] According to another aspect of an embodiment of the present application, a signal receiving device is provided, including:

[0029] a first sending unit configured to send transmission configuration indication (TCI) state indication information, wherein the TCI state indication information indicates a first uplink or joint TCI state and a second uplink or joint TCI state;

[0030] a second sending unit configured to send downlink control information (DCI); and

[0031] A receiving unit that receives an uplink transmission; wherein the uplink transmission is performed by the terminal device 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.

[0032] According to another aspect of an embodiment of the present application, a communication system is provided, including:

[0033] A network device that sends transmission configuration indication (TCI) state indication information, wherein the TCI state indication information indicates a first uplink or joint TCI state and a second uplink or joint TCI state; sends downlink control information (DCI) and receives uplink transmission;

[0034] A terminal device that receives the transmission configuration indication (TCI) status 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 the uplink transmission scheme indicated by the downlink control information.

[0035] One of the beneficial effects of the embodiments of the present application is that a terminal device performs uplink transmission based on a first uplink or combined TCI state and / or a second uplink or combined TCI state according to an uplink transmission scheme indicated by downlink control information (DCI). As a result, the terminal device can 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 uplink transmission throughput or reliability.

[0036] With reference to the following description and accompanying drawings, specific embodiments of the present application are disclosed in detail, indicating the manner in which the principles of the present application can be employed. It should be understood that the embodiments of the present application are not limited in scope. Within the spirit and scope of the appended claims, the embodiments of the present application include many variations, modifications and equivalents.

[0037] Features described and / or illustrated with respect to one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments.

[0038] It should be emphasized that the term "include / comprising" when used herein refers to the presence of features, integers, steps or components, but does not exclude the presence or addition of one or more other features, integers, steps or components. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The elements and features described in one figure or one embodiment of the present application can be combined with the elements and features shown in one or more other figures or embodiments. In addition, in the accompanying drawings, similar reference numerals represent corresponding parts in several figures and can be used to indicate corresponding parts used in more than one embodiment.

[0040] FIG1 is a schematic diagram of a communication system according to an embodiment of the present application;

[0041] FIG2 is a schematic diagram of a signal sending method according to an embodiment of the present application;

[0042] FIG3 is an example diagram of an uplink transmission solution according to an embodiment of the present application;

[0043] FIG4 is another exemplary diagram of an uplink transmission solution according to an embodiment of the present application;

[0044] FIG5 is another example diagram of an uplink transmission solution according to an embodiment of the present application;

[0045] FIG6 is an example diagram of the association between power control parameters and uplink TCI status or combined TCI status according to an embodiment of the present application;

[0046] FIG7 is an example diagram of the association between power control parameters and SRI according to an embodiment of the present application;

[0047] FIG8 is a schematic diagram of a MAC CE according to an embodiment of the present application;

[0048] FIG9 is another schematic diagram of a MAC CE according to an embodiment of the present application;

[0049] FIG10 is another schematic diagram of a MAC CE according to an embodiment of the present application;

[0050] FIG11 is a schematic diagram of a signal receiving method according to an embodiment of the present application;

[0051] FIG12 is a schematic diagram of a signal sending device according to an embodiment of the present application;

[0052] FIG13 is a schematic diagram of a signal receiving device according to an embodiment of the present application;

[0053] FIG14 is a schematic diagram of the structure of a network device according to an embodiment of the present application;

[0054] FIG15 is a schematic diagram of the structure of a terminal device according to an embodiment of the present application. DETAILED DESCRIPTION

[0055] The above and other features of the present application will become apparent through the following description with reference to the accompanying drawings. In the description and the accompanying drawings, specific embodiments of the present application are disclosed in detail, which illustrate some embodiments in which the principles of the present application can be adopted. It should be understood that the present application is not limited to the described embodiments. On the contrary, the present application includes all modifications, variations and equivalents that fall within the scope of the appended claims.

[0056] In the embodiments of the present application, the terms "first", "second", etc. are used to distinguish different elements from the name, but do not indicate the spatial arrangement or temporal order of these elements, and these elements should not be limited by these terms. The term "and / or" includes any one and all combinations of one or more of the associated listed terms. The terms "comprising", "including", "having", etc. refer to the presence of the stated features, elements, components or components, but do not exclude the presence or addition of one or more other features, elements, components or components.

[0057] In the embodiments of this application, the singular forms "a," "the," etc. include plural forms and should be broadly understood to mean "a" or "a type" rather than being limited to "one." Furthermore, the term "said" should be understood to include both singular and plural forms, unless the context clearly indicates otherwise. Furthermore, the term "according to" should be understood to mean "at least in part based on...", and the term "based on" should be understood to mean "at least in part based on...", unless the context clearly indicates otherwise.

[0058] In the embodiments of the present application, the term "communication network" or "wireless communication network" may refer to a network that complies with any of the following communication standards, such as Long Term Evolution (LTE), enhanced Long Term Evolution (LTE-A, LTE-Advanced), Wideband Code Division Multiple Access (WCDMA), High-Speed ​​Packet Access (HSPA), etc.

[0059] Furthermore, communication between devices in the communication system may be carried out according to communication protocols of any stage, for example, including but not limited to the following communication protocols: 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G and 5G, New Radio (NR), etc., and / or other communication protocols currently known or to be developed in the future.

[0060] In the embodiments of the present application, the term "network device" refers to, for example, a device in a communication system that connects a terminal device to the communication network and provides services to the terminal device. Network devices may include, but are not limited to, the following devices: base station (BS), access point (AP), transmission reception point (TRP), broadcast transmitter, mobile management entity (MME), gateway, server, radio network controller (RNC), base station controller (BSC), etc.

[0061] Base stations may include, but are not limited to, NodeB (NB), evolved NodeB (eNodeB or eNB), and 5G base stations (gNB), among others. They may also include remote radio heads (RRHs), remote radio units (RRUs), relays, or low-power nodes (e.g., femeto, pico, etc.). The term "base station" may include some or all of their functions, and each base station may provide communication coverage for a specific geographic area. The term "cell" may refer to a base station and / or its coverage area, depending on the context in which the term is used.

[0062] In the embodiments of the present application, the term "user equipment" (UE) or "terminal equipment" (TE) refers to, for example, a device that accesses a communication network through a network device and receives network services. A terminal device can be fixed or mobile and may also be referred to as a mobile station (MS), a terminal, a subscriber station (SS), an access terminal (AT), a station, and so on.

[0063] Among them, terminal devices may include but are not limited to the following devices: cellular phones, personal digital assistants (PDAs), wireless modems, wireless communication devices, handheld devices, machine-type communication devices, laptop computers, cordless phones, smart phones, smart watches, digital cameras, etc.

[0064] For another example, in scenarios such as the Internet of Things (IoT), the terminal device can also be a machine or device for monitoring or measurement, including but not limited to: machine type communication (MTC) terminal, vehicle-mounted communication terminal, device-to-device (D2D) terminal, machine-to-machine (M2M) terminal, and so on.

[0065] In addition, the term "network side" or "network device side" refers to one side of the network, which can be a base station or one or more network devices as described above. The term "user side" or "terminal side" or "terminal device side" refers to the user or terminal side, which can be a UE or one or more terminal devices as described above. Unless otherwise specified herein, "device" can refer to either network equipment or terminal equipment.

[0066] The following describes the scenarios of the embodiments of the present application through examples, but the present application is not limited thereto.

[0067] Figure 1 is a schematic diagram of a communication system according to an embodiment of the present application, illustrating a situation using a terminal device and a network device as an example. As shown in Figure 1 , communication system 100 may include a first TRP 101, a second TRP 102, and a terminal device 103. The first TRP 101 and the second TRP 102 may be network devices. For simplicity, Figure 1 illustrates only two network devices and one terminal device as an example, but the embodiments of the present application are not limited thereto.

[0068] In the embodiment of the present application, existing services or future services can 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: enhanced mobile broadband (eMBB), massive machine type communication (mMTC), and ultra-reliable and low-latency communication (URLLC), etc.

[0069] Rel-16 standardized PDSCH transmission based on mTRP, and Rel-17 standardized 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 the uplink and downlink transmissions of two TRPs, which is more suitable for situations where the backhaul between TRPs is ideal. For mDCI mTRP, two TRPs use two DCIs to schedule the uplink and downlink transmissions of their respective TRPs, which is more suitable for situations where the backhaul between TRPs is not ideal.

[0070] Taking the terminal device 103 transmitting PUSCH in the mTRP scenario as an example, as shown in Figure 1, the terminal device 103 transmits PUSCH in a PUSCH repetition manner. For example, it transmits to the first TRP 101 in time slot 1, transmits to the second TRP 102 in time slot 2, and so on.

[0071] The terminal device is configured with two SRS resource sets (SRS resource sets), for example, a first SRS resource set (1st SRS resource set) corresponding to the first TRP101 is configured for the terminal device 103; and a second SRS resource set (2nd SRS resource set) corresponding to the second TRP102 is configured for the terminal device 103.

[0072] Due to the geographical differences between the first TRP 101 and the second TRP 102, the terminal device may send PUSCH to the first TRP 101 and / or the second TRP 102 based on different transmission parameters such as precoding matrices, SRIs (SRS resource indicators), and power control parameters. In addition, the terminal device obtains the 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.

[0073] Taking the SRS resource indicator (SRI) as an example, for a dynamic uplink grant, the two SRI fields in the DCI indicate the SRS resources in two SRS resource sets respectively; for a configured grant, the two SRIs are configured by RRC to two SRS resource sets. Therefore, the terminal device needs to know the mapping relationship between PUSCH repetition and SRS resource set, that is, to know which SRS resource set each PUSCH repetition should be sent based on.

[0074] For Rel-17, terminal devices use only one panel for each uplink transmission. Even if a terminal device has multiple panels, Re-17 does not support simultaneous uplink transmission using multiple panels. Rel-18 will research and standardize simultaneous multi-panel uplink transmission by terminal devices, based on the unified TCI framework and mTRP scenarios described above. Currently, simultaneous multi-panel uplink transmission has been identified as a project item for Rel-18, but standardization work has not yet begun.

[0075] To address at least one of the above problems, embodiments of the present application provide a method, device, and system for uplink transmission based on a unified TCI in a multi-TRP scenario.

[0076] Embodiments of the first aspect

[0077] An embodiment of the present application provides a signal sending method, which is applied on the terminal device side.

[0078] FIG2 is a schematic diagram of a signal transmission method according to an embodiment of the present application. As shown in FIG2 , the method includes:

[0079] 201. A terminal device receives 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.

[0080] 202. The terminal device receives downlink control information (DCI);

[0081] 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 the uplink transmission scheme indicated by the downlink control information.

[0082] It is worth noting that FIG2 above is merely a schematic illustration of an embodiment of the present application, using a terminal device as an example, but the present application is not limited thereto. For example, the execution order of the various operations may be appropriately adjusted, other operations may be added or some operations may be reduced, and the objects of the aforementioned operations may be adjusted. Those skilled in the art may make appropriate modifications based on the above description, and are not limited to the description of FIG2 above.

[0083] In some embodiments, the terms "TRP" and "SRS resource set" can be replaced with each other. The terms "TRP" and "CSI-RS resource set" can be replaced with each other. The terms "corresponding", "associated", and "including" can be replaced with each other, and "uplink TCI state" and "joint TCI state" can be replaced with each other. The terms "uplink TCI state or joint TCI state" and "uplink or joint TCI state" can be replaced with each other. The terms "transmit" and "send" can be replaced with each other; the embodiments of the present application are not limited to this.

[0084] In some embodiments, the terminal device receives the downlink control information within the effective time of the first uplink or joint TCI state and the second uplink or joint TCI state.

[0085] In some embodiments, the uplink transmission scheme available to the terminal device is an uplink transmission scheme used in at least one of the following situations:

[0086] -The terminal device is configured with two SRS resource sets;

[0087] -DCI format 1_1 / 1_2with / 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 (DL or Joint-TCIState). DCI format 1_1 or DCI format 1_2 can schedule downlink data, referred to as DCI format 1_1 / 1_2with DL assignment, or can not schedule downlink data, referred to as DCI format 1_1 / 1_2 without DL assignment.

[0088] - Within the duration of two uplink TCI states or a combined TCI state;

[0089] -The terminal device has at least two panels and is capable of simultaneous multi-panel uplink transmission.

[0090] For example, DCI format 1_1 or DCI format 1_2 indicates two uplink TCI states or a combined TCI state. During the effective time of the above two TCI states, DCI format 0_1 ​​or DCI format 0_2 further instructs the terminal device to use a certain uplink transmission scheme for uplink transmission. The uplink transmission scheme can be based on the two TCI states, or based on the first TCI state, or based on the second TCI state.

[0091] In some embodiments, the downlink control information indicates or activates the uplink transmission, and the uplink transmission includes:

[0092] - Physical Uplink Shared Channel (PUSCH) transmission based on dynamic grant; or

[0093] - PUSCH transmission based on a Type 2 configured grant; or

[0094] - Physical Uplink Control Channel (PUCCH) transmission; or

[0095] - Semi-persistent Sounding Reference Signal (SRS) transmission; or

[0096] -Aperiodic SRS transmission.

[0097] In some embodiments, the dynamic grant-based PUSCH includes initial transmission and retransmission of a PUSCH not based on a Type 1 / Type 2 configured grant scheduled by DCI, and retransmission of a PUSCH based on a Type 1 / Type 2 configured grant scheduled by DCI.

[0098] In some embodiments, the uplink transmission includes transmission of at least one of the following:

[0099] -PUSCH based on dynamic grant;

[0100] -PUSCH based on Type 1 configured grant;

[0101] -PUSCH based on Type 2 configured grant;

[0102] -PUCCH;

[0103] -Periodic SRS;

[0104] -Semi-persistent SRS;

[0105] -Aperiodic SRS (Aperiodic SRS).

[0106] In some embodiments, an uplink transmission scheme available to a terminal device is an uplink transmission scheme that does not use unified TCI. For example, the terminal device determines an uplink transmission scheme according to an embodiment of the present application, but does not use a UL TX spatial filter determined based on unified TCI for uplink transmission. Instead, the terminal device uses a UL TX spatial filter determined based on existing technologies for uplink transmission.

[0107] The following is a schematic illustration of an uplink transmission scheme. There may be one or more uplink transmission schemes available.

[0108] In some embodiments, the uplink transmission scheme includes:

[0109] Solution 0: Perform 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 simultaneously; 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.

[0110] In solution 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.

[0111] In some embodiments, the uplink transmission scheme includes:

[0112] Solution 1: Perform 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 simultaneously; the first uplink transmission and the second uplink transmission use a first set of power control parameters.

[0113] In solution 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.

[0114] In some embodiments, the uplink transmission scheme includes:

[0115] Solution 2: Perform 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 simultaneously; the first uplink transmission and the second uplink transmission use a second set of power control parameters.

[0116] In solution 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.

[0117] The above adaptability describes an uplink transmission solution using multiple panels simultaneously, including at least one of uplink transmission solutions 0 to 2. The following describes an uplink transmission solution using a single panel, including at least one of uplink transmission solutions 3 to 6.

[0118] In some embodiments, the uplink transmission scheme includes:

[0119] Solution 3: Perform 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.

[0120] In solution 3, the terminal device uses a panel to perform the first uplink transmission to the first transmission receiving point.

[0121] In some embodiments, the uplink transmission scheme includes:

[0122] Solution 4: Perform 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.

[0123] In solution 4, the terminal device uses a panel to perform the second uplink transmission to the second transmission receiving point.

[0124] In some embodiments, the uplink transmission scheme includes:

[0125] Option 5: Perform 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 through time division multiplexing (TDM); wherein the first uplink transmission is first based on the first uplink or joint TCI state and then based on the second uplink or joint TCI state, 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.

[0126] In solution 5, the terminal device first uses a panel to perform the first uplink transmission to a first transmission receiving point, and then uses a panel to perform the second uplink transmission to a second transmission receiving point.

[0127] In some embodiments, the uplink transmission scheme includes:

[0128] Option 6: Perform 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 through time division multiplexing (TDM); wherein the first uplink transmission is first based on the second uplink or joint TCI state and then on the first uplink or joint TCI state, 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.

[0129] In solution 6, the terminal device first uses a panel to perform the second uplink transmission to the second transmission receiving point, and then uses a panel to perform the first uplink transmission to the first transmission receiving point.

[0130] Uplink transmission schemes 0 to 6 can be as shown in [Error! Reference source not found].

[0131] Table 1

[0132]

[0133]

[0134] In some embodiments, the uplink transmission scheme of Error! Reference source not found is equivalent to Error! Reference source not found. During the active period of two uplink TCI states or a combined TCI state, the i-th state refers to the i-th state of the two states, where i = 1, 2. For example, Error! Reference source not found. represents the uplink transmission scheme of the PUSCH.

[0135] Table 2

[0136]

[0137]

[0138] Figure 3 is an example diagram of an uplink transmission scheme according to an embodiment of the present application, which schematically illustrates uplink transmission scheme 0. As shown in Figure 3 , the terminal device uses two panels for uplink transmission at the same time, and the two panels transmit to two TRPs respectively.

[0139] Figure 4 is another example diagram of the uplink transmission scheme of an embodiment of the present application, which schematically illustrates uplink transmission scheme 1 or 2. As shown in Figure 4, the terminal device uses two panels for uplink transmission at the same time, and the two panels only transmit to a certain TRP.

[0140] Figure 5 is another example diagram of an uplink transmission scheme according to an embodiment of the present application, schematically illustrating uplink transmission scheme 3 or 4. As shown in Figure 5 , the terminal device uses a panel for uplink transmission, and the panel transmits only to a certain TRP.

[0141] For uplink transmission scheme 5 or 6, refer to Figure 1 for a schematic illustration. Unlike transmission scheme 0, regardless of whether the terminal device has one panel or two panels, in uplink transmission scheme 5 or 6, the terminal device only uses one panel for uplink transmission, but transmits to different TRPs in different time units in a TDM manner.

[0142] The SRS resource set and power control parameters (referred to as power control parameters) are described below.

[0143] 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, the "uplink TCI state or joint TCI state" in Table 2 can be equivalently replaced by "SRS resource set".

[0144] In some embodiments, the i-th SRS resource set is associated with the i-th panel, i=1,2. For example, the terminal device uses the i-th panel to send one or more SRSs in the i-th SRS resource set. The network device can obtain the channel state information of the uplink channel from the i-th panel to the network device based on the SRS, thereby determining the uplink beam, SRI, TPMI (Transmission Precoding Matrix Information), power control parameters, etc. suitable for the i-th panel. SRI can be indicated by the SRS resource indicator field or the Second SRS resource indicator field in the DCI, referred to as indicated by the SRI field. TPMI can be indicated by the Precoding information and number of layers field or the Second Precoding information field in the DCI, referred to as indicated by the TPMI field. Considering that the terminal device uses the same antenna to send SRS and other uplink signals (such as PUSCH), the terminal device performs uplink transmission based on the i-th SRS resource set, which can also be equivalent to the terminal device using the i-th panel for uplink transmission.

[0145] For example, the SRI field may be the SRS resource indicator field or the Second SRS resource indicator field in 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 standard TS 38.212; the present application is not limited thereto.

[0146] In some embodiments, the i-th SRS resource set is associated with the i-th uplink TCI state or the combined 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 used is determined based on the i-th uplink TCI state or the combined TCI state. When the uplink transmission based on the i-th SRS resource set by the terminal device is equivalent to using the i-th panel for uplink transmission, the uplink beam of the i-th panel of the terminal device is determined based on the i-th uplink TCI state or the combined TCI state.

[0147] In some embodiments, the i-th set of power control parameters is determined based on the i-th uplink TCI state (UL-TCIState) or joint TCI state (DL or Joint-TCIState), where i = 1 or 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.

[0148] Figure 6 is an example diagram of the association between power control parameters and uplink TCI state or joint TCI state in an embodiment of the present application. As shown in Figure 6, the RRC IE (Information Element) indicating the uplink TCI state or joint TCI state, namely UL-TCIState and DLorJoint-TCIState, includes a path loss reference signal identified as pathlossReferenceRS-Id, which is associated with the target received power (p0 in Figure 6), the path loss compensation factor (alpha in Figure 6) and the closed loop index (closedLoopIndex in Figure 6) through Uplink-powerControlId. The i-th set of power control parameters is further associated with the i-th SRS resource set and with the i-th SRI field in Figure 6, i=1,2. The two TPC (Transmit Power Control) fields in Figure 6 correspond to closedLoopIndex=0 (l=0) and closedLoopIndex=1 (l=1), respectively.

[0149] 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, i=1,2.

[0150] Figure 7 is an example diagram of the association between power control parameters and SRIs in an embodiment of the present application. As shown in Figure 7, the i-th SRI field is associated with a certain sri-PUSCH-PowerControlId, and then 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 through the sri-PUSCH-PowerControlId, where i = 1, 2.

[0151] In some embodiments, the i-th SRI field or the TPMI field is determined based on the i-th SRS resource set, i=1,2.

[0152] In some embodiments, the specific method for determining the uplink beam, SRI, and TPMI may follow the existing technology.

[0153] In some embodiments, for multiple transmission reception points (mTRP) based on single downlink control information (sDCI), the terminal device performs the uplink transmission according to the downlink control information.

[0154] In some embodiments, for multiple transmission reception points (mTRP) based on multiple downlink control information (mDCI), the terminal device performs the uplink transmission according to the downlink control information.

[0155] In some embodiments, the uplink transmission scheme available to the terminal device includes a simultaneous multi-panel uplink transmission scheme, or includes a multi-panel uplink transmission scheme and a single-panel uplink transmission scheme. For example, the uplink transmission scheme available to the terminal device can be one or any combination of the multiple uplink transmission schemes described in Table 1 or Table 2.

[0156] For example, the uplink transmission schemes available to terminal devices include:

[0157] - Uplink transmission scheme 0, or,

[0158] - at least one of uplink transmission scheme 0 and uplink transmission schemes 1 to 6, or,

[0159] - At least one of uplink transmission schemes 1 to 2, or,

[0160] - At least one of uplink transmission schemes 1 to 2 and at least one of uplink transmission schemes 3 to 6.

[0161] For example, for mTRP based on sDCI, the uplink transmission schemes available to the terminal device include:

[0162] - Uplink transmission scheme 0, or,

[0163] - At least one of uplink transmission scheme 0 and uplink transmission schemes 1 to 6.

[0164] For example, for mTRP based on mDCI, the uplink transmission schemes available to the terminal device include:

[0165] - At least one of uplink transmission schemes 1 to 2, or,

[0166] - At least one of uplink transmission schemes 1 to 2 and at least one of uplink transmission schemes 3 to 6.

[0167] The following further schematically illustrates how to configure and / or indicate an uplink transmission solution.

[0168] In some embodiments, when the uplink transmission schemes available to the terminal device include more than one uplink transmission scheme, the uplink transmission scheme used by the terminal device is indicated by DCI and / or configured by RRC signaling.

[0169] For example, the uplink transmission schemes available to 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 scheme used by the terminal device.

[0170] For example, the uplink transmission schemes available to the terminal device include uplink transmission scheme 0 and at least one of uplink transmission schemes 3 and 4, and the uplink transmission scheme used by the terminal device is indicated by DCI format 0_1 ​​and / or 0_2.

[0171] For example, the uplink transmission schemes available to the terminal device include uplink transmission scheme 0 and at least one of uplink transmission schemes 3, 4, 5, and 6, and the uplink transmission scheme used by the terminal device is indicated by DCI format 0_1 ​​and / or 0_2.

[0172] For example, the uplink transmission schemes available to the terminal device include uplink transmission scheme 0 and at least one of uplink transmission schemes 3, 4, 5, and 6, and the uplink transmission scheme used by the terminal device is indicated by RRC signaling.

[0173] 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.

[0174] In some embodiments, multiple uplink transmission schemes are configured for the terminal device through RRC signaling, and one of the multiple uplink transmission schemes is indicated by the downlink control information.

[0175] For example, the uplink transmission schemes available to 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. RRC signaling configures an 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. Alternatively, RRC signaling configures an 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 the terminal device is indicated with two uplink TCI states or a combined TCI state, the terminal device can know based on the RRC signaling whether to use the two TCI states for uplink transmission simultaneously (Scheme 0) or to use the two TCI states for uplink transmission in TDM mode (Schemes 5 and 6). Through DCI signaling, 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) can be further realized, or dynamic switching 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) can be realized.

[0176] In some embodiments, any one of uplink transmission schemes 0, 1, and 2 includes more than one sub-scheme. For example, it includes at least one of the following sub-schemes:

[0177] - Spatial Division Multiplex (SDM): The two panels of the terminal device send different layers on the same two resources.

[0178] - Frequency Division Multiplex 1 (FDM1): The two panels of the terminal device send different layers on two frequency division multiplexed resources.

[0179] - Frequency Division Multiplex 2 (FDM2): The two panels of the terminal device send two copies on two frequency division multiplexed resources respectively.

[0180] In some embodiments, any of uplink transmission schemes 5 and 6 includes more than one sub-scheme. For example, it includes at least one of the following sub-schemes:

[0181] - Cyclic mapping: The terminal device sends TDM messages in the order of 1, 2, 1, 2.

[0182] - Sequential mapping: The terminal device sends TDM messages in the order of 1, 1, 2, 2.

[0183] Here, 1 and 2 represent the first and second uplink or joint TCI states, or SRS resource sets, or TRPs, respectively.

[0184] In some embodiments, the sub-scheme is configured via RRC signaling. For example, if RRC signaling configures a terminal device to use the FDM1 sub-scheme, uplink transmission scheme 0 in the error! Reference source not found is replaced with this sub-scheme (the same applies to transmission schemes 1 and 2). Based on this, any of the previously described methods can be used to determine an uplink transmission scheme from among multiple uplink transmission schemes.

[0185] In some embodiments, the sub-scheme is indicated by DCI signaling. For example, uplink transmission scheme 0 in [Error! Reference source not found] is replaced with three uplink transmission schemes 0a, 0b, and 0c (the same applies to transmission schemes 1 and 2), corresponding to three sub-schemes. The DCI indicates the sub-scheme to be used. Based on this, any of the previously described methods can be used to determine an uplink transmission scheme from multiple uplink transmission schemes.

[0186] The following describes PUCCH transmission, and the above solutions are also applicable. The similarities with the previous ones are not repeated here.

[0187] In some embodiments, the 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;

[0188] The terminal device receives downlink control information (DCI); and

[0189] The terminal device transmits a 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.

[0190] In some embodiments, a physical uplink control channel (PUCCH) resource is configured by RRC signaling or MAC CE to use one of multiple uplink transmission schemes, and when the PUCCH resource is indicated by the DCI, the terminal device transmits the PUCCH using the configured uplink transmission scheme.

[0191] In some embodiments, “PUCCH resources are indicated by DCI” can be equivalently replaced by “PUCCH resources are determined by the PUCCH resource indicator field of DCI and the CCE (Control Channel Element) index of DCI”.

[0192] For example, DCI format 1_1 or DCI format 1_2 indicates two uplink TCI states or joint TCI states. During the effective time of the above two TCI states, DCI format 1_1 or DCI format 1_2 instructs the terminal device to send PUCCH. 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 by RRC signaling or MAC CE to use a certain uplink transmission scheme, and the uplink transmission scheme can be based on two TCI states, or based on the first TCI state, or based on the second TCI state. The terminal device sends PUCCH using the uplink transmission scheme.

[0193] For example, when RRC signaling is used to configure PUCCH resources, a new RRC IE (denoted as "scheme") is used to configure the uplink transmission scheme used by the PUCCH resource, that is, the uplink transmission scheme associated with the PUCCH. The following Table 3 provides a schematic illustration of RRC signaling. RRC signaling can configure multiple PUCCH resources. The PUCCH resource indicator field in the DCI indicates a PUCCH resource among multiple PUCCH resources. When sending a PUCCH, the terminal device uses the uplink transmission scheme associated with the PUCCH resource.

[0194] Table 3

[0195]

[0196]

[0197] For example, a MAC CE is used to associate a PUCCH resource with an uplink transmission scheme. The RRC-configured PUCCH resource does not include an IE indicating the uplink transmission scheme. The MAC CE is used to associate the PUCCH resource with the uplink transmission scheme. When the DCI indicates a PUCCH resource, the PUCCH is transmitted using the uplink transmission scheme configured by the MAC CE.

[0198] FIG8 is a schematic diagram of a MAC CE according to an embodiment of the present application, illustrating a MAC CE. Each PUCCH resource ID field identifies a PUCCH resource. Each PUCCH resource ID field is associated with one or more Si fields. The one or more Si fields are used to indicate the uplink transmission scheme associated with the PUCCH resource.

[0199] For example, assuming three Si fields (S5-S7) are used, "000" represents uplink transmission scheme 0, "001" represents uplink transmission scheme 1, and so on. Unused Si fields (S0-S4) are reserved fields, equivalent to R fields (reserved fields), and can be marked as R. Without loss of generality, the MAC CE may also include other fields not shown in Figure 8.

[0200] Figure 9 is another schematic diagram of a MAC CE according to an embodiment of the present application. If the Si field is 1 and the Sj field for other j≠i is 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 also include other fields not shown in Figure 9.

[0201] Figure 10 is another schematic diagram of the MAC CE of an embodiment of the present application. The C field is 0, indicating 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, the S1 field is 1, indicating uplink transmission scheme 3, the S1 field is 0, indicating uplink transmission scheme 4, and the S0 field is marked as R. The C field is 1, indicating that the PUCCH resource (PUCCH resource ID) is associated with two Spatial Relation Infos (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" indicates uplink transmission scheme 0, "01" indicates uplink transmission scheme 5, "10" indicates uplink transmission scheme 6, and the S2 and S3 fields are marked as R. Without loss of generality, the MAC CE may also include other fields not shown in FIG. 10 .

[0202] In some embodiments, the PUCCH uses unified TCI, the UL TX spatial filter used to send 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.

[0203] In some embodiments, PUCCH does not use unified TCI, the UL TX spatial filter used to send PUCCH is determined based on Spatial Relation Info, and the uplink transmission scheme used is determined based on RRC configuration or MAC CE configuration.

[0204] For example, as shown in Figure 10, a PUCCH can be transmitted based on one Spatial Relation Info or two Spatial Relation Info fields, depending on whether the PUCCH resource indicated by the DCI is associated with one or two Spatial Relation Info fields. When the uplink transmission scheme is based on RRC configuration, the uplink transmission mode of the PUCCH is determined based on the "scheme" IE configured in the RRC. When the uplink transmission scheme is based on MAC CE configuration, the uplink transmission mode of the PUCCH is determined based on the Si field.

[0205] 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, within the active period of two uplink TCI states or joint TCI states, DCI format 1_1 or 1_2 indicates a PUCCH resource, and the DCI also indicates the uplink transmission scheme used to send the PUCCH. If 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.

[0206] The above embodiments are merely exemplary of the present invention, but the present invention is not limited thereto. Appropriate modifications may be made based on the above embodiments. For example, the above embodiments may be used alone, or one or more of the above embodiments may be combined.

[0207] As can be seen from the above embodiments, 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 the uplink transmission scheme indicated by the downlink control information (DCI). As a result, the terminal device can 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, thereby improving uplink transmission throughput or reliability.

[0208] Embodiments of the second aspect

[0209] The embodiment of the present application provides a signal receiving method, which is described from the perspective of a network device. The embodiment of the present application can be combined with the embodiment of the first aspect, or implemented independently. The contents that are the same as those in the embodiment of the first aspect are not repeated here.

[0210] FIG11 is a schematic diagram of a signal receiving method according to an embodiment of the present application. As shown in FIG11 , the method includes:

[0211] 1101, a network device 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;

[0212] 1102, the network device sends downlink control information (DCI); and

[0213] 1103, the network device receives 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.

[0214] It is worth noting that FIG11 above is merely a schematic illustration of an embodiment of the present application, and the present application is not limited thereto. For example, the execution order of the various operations may be appropriately adjusted, and other operations may be added or some operations may be reduced. Those skilled in the art may make appropriate modifications based on the above description, and are not limited to the description of FIG11 above.

[0215] In some embodiments, the downlink control information indicates or activates the uplink transmission, and the uplink transmission includes:

[0216] - Physical Uplink Shared Channel (PUSCH) transmission based on dynamic grant; or

[0217] - PUSCH transmission based on a Type 2 configured grant; or

[0218] - Physical Uplink Control Channel (PUCCH) transmission; or

[0219] - Semi-persistent Sounding Reference Signal (SRS) transmission; or

[0220] -Aperiodic SRS transmission.

[0221] In some embodiments, the uplink transmission scheme includes:

[0222] 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 at the same time; 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.

[0223] In some embodiments, the uplink transmission scheme includes:

[0224] 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 at the same time; the first uplink transmission and the second uplink transmission use a first set of power control parameters.

[0225] In some embodiments, the uplink transmission scheme includes:

[0226] 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 at the same time; the first uplink transmission and the second uplink transmission use a second set of power control parameters.

[0227] In some embodiments, the uplink transmission scheme includes:

[0228] Perform 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.

[0229] In some embodiments, the uplink transmission scheme includes:

[0230] Perform 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.

[0231] In some embodiments, the uplink transmission scheme includes:

[0232] 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 through time division multiplexing (TDM); wherein the first uplink transmission is first based on the first uplink or joint TCI state and then based on the second uplink or joint TCI state, 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.

[0233] In some embodiments, the uplink transmission scheme includes:

[0234] 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 through time division multiplexing (TDM); wherein the first uplink transmission is first based on the second uplink or joint TCI state and then based on the first uplink or joint TCI state, 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.

[0235] 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.

[0236] The above embodiments are merely exemplary of the present invention, but the present invention is not limited thereto. Appropriate modifications may be made based on the above embodiments. For example, the above embodiments may be used alone, or one or more of the above embodiments may be combined.

[0237] As can be seen from the above embodiments, 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 the uplink transmission scheme indicated by the downlink control information (DCI). As a result, the terminal device can 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, thereby improving uplink transmission throughput or reliability.

[0238] Embodiments of the third aspect

[0239] The embodiment of the present application provides a signal sending device, which may be, for example, a terminal device, or one or more components or assemblies configured in the terminal device, and the same contents as those in the embodiment of the first aspect will not be repeated here.

[0240] FIG12 is a schematic diagram of a signal sending device according to an embodiment of the present application.

[0241] As shown in FIG12 , the signal sending device 1200 includes:

[0242] A first receiving unit 1201 receives 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;

[0243] A second receiving unit 1202 receives downlink control information (DCI); and

[0244] The sending 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 the uplink transmission scheme indicated by the downlink control information.

[0245] In some embodiments, the second receiving unit 1202 receives the downlink control information within the effective time of the first uplink or joint TCI state and the second uplink or joint TCI state.

[0246] In some embodiments, the downlink control information indicates or activates the uplink transmission, and the uplink transmission includes:

[0247] - Physical Uplink Shared Channel (PUSCH) transmission based on dynamic grant; or

[0248] - PUSCH transmission based on a Type 2 configured grant; or

[0249] - Physical Uplink Control Channel (PUCCH) transmission; or

[0250] - Semi-persistent Sounding Reference Signal (SRS) transmission; or

[0251] -Aperiodic SRS transmission.

[0252] In some embodiments, the uplink transmission scheme includes:

[0253] Simultaneously performing a first uplink transmission based on the first uplink or combined TCI state and a second uplink transmission based on the second uplink or combined 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;

[0254] The sending unit 1203 uses two panels to simultaneously perform the first uplink transmission and the second uplink transmission to the first transmission receiving point and the second transmission receiving point respectively.

[0255] In some embodiments, the uplink transmission scheme includes:

[0256] performing a first uplink transmission based on the first uplink or combined TCI state and a second uplink transmission based on the second uplink or combined TCI state simultaneously; the first uplink transmission and the second uplink transmission using a first set of power control parameters;

[0257] The sending unit 1203 uses two panels to simultaneously perform the first uplink transmission and the second uplink transmission to the first transmission receiving point.

[0258] In some embodiments, the uplink transmission scheme includes:

[0259] performing a first uplink transmission based on the first uplink or combined TCI state and a second uplink transmission based on the second uplink or combined TCI state simultaneously; the first uplink transmission and the second uplink transmission using a second set of power control parameters;

[0260] The sending unit 1203 uses two panels to simultaneously perform the first uplink transmission and the second uplink transmission to the second transmission receiving point.

[0261] In some embodiments, the uplink transmission scheme includes:

[0262] 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;

[0263] The sending unit 1203 uses a panel to perform the first uplink transmission to the first transmission receiving point.

[0264] In some embodiments, the uplink transmission scheme includes:

[0265] 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;

[0266] The sending unit 1203 uses a panel to perform the second uplink transmission to the second transmission receiving point.

[0267] In some embodiments, the uplink transmission scheme includes:

[0268] Performing a first uplink transmission based on the first uplink or combined TCI state and a second uplink transmission based on the second uplink or combined TCI state through time division multiplexing (TDM); wherein the first uplink transmission is based on the first uplink or combined TCI state first and then on the second uplink or combined TCI state, using a first set of power control parameters, and the second uplink transmission is based on a second set of power control parameters;

[0269] The sending unit 1203 first uses a panel to perform the first uplink transmission to a first transmission receiving point, and then uses a panel to perform the second uplink transmission to a second transmission receiving point.

[0270] In some embodiments, the uplink transmission scheme includes:

[0271] performing a first uplink transmission based on the first uplink or combined TCI state and a second uplink transmission based on the second uplink or combined TCI state through time division multiplexing (TDM); wherein the first uplink transmission is based on the second uplink or combined TCI state first and then on the first uplink or combined TCI state, using a first set of power control parameters and the second uplink transmission is based on a second set of power control parameters;

[0272] The sending unit 1203 first uses a panel to perform the second uplink transmission to the second transmission receiving point, and then uses a panel to perform the first uplink transmission to the first transmission receiving point.

[0273] 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.

[0274] In some embodiments, for multiple transmission reception points (mTRP) based on single downlink control information (sDCI), the sending unit 1203 performs the uplink transmission according to the downlink control information.

[0275] In some embodiments, for multiple transmission reception points (mTRP) based on multiple downlink control information (mDCI), the sending unit 1203 performs the uplink transmission according to the downlink control information.

[0276] In some embodiments, multiple uplink transmission schemes are configured for the terminal device through RRC signaling, and the downlink control information indicates one of the multiple uplink transmission schemes.

[0277] In some embodiments, a physical uplink control channel (PUCCH) resource is configured by RRC signaling or MAC CE to use one of multiple uplink transmission schemes, and when the PUCCH resource is indicated by the DCI, the sending unit 1203 transmits the PUCCH using the configured uplink transmission scheme.

[0278] The above embodiments are merely exemplary of the present invention, but the present invention is not limited thereto. Appropriate modifications may be made based on the above embodiments. For example, the above embodiments may be used alone, or one or more of the above embodiments may be combined.

[0279] It is worth noting that the above description only describes the components or modules related to the present application, but the present application is not limited thereto. The signal transmitting device 1200 may also include other components or modules. For details of these components or modules, reference may be made to related technologies.

[0280] In addition, for the sake of simplicity, FIG12 only illustrates the connection relationship or signal direction between various components or modules. However, it should be clear to those skilled in the art that various related technologies such as bus connection can be used. The above-mentioned components or modules can be implemented by hardware facilities such as processors, memories, transmitters, and receivers; the implementation of this application is not limited to this.

[0281] As can be seen from the above embodiments, 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 the uplink transmission scheme indicated by the downlink control information (DCI). As a result, the terminal device can 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, thereby improving uplink transmission throughput or reliability.

[0282] Embodiments of the fourth aspect

[0283] The embodiment of the present application provides a signal receiving device, which may be, for example, a network device, or one or more components or assemblies configured in the network device, and the contents that are the same as those in the first to third aspects of the embodiment are not repeated here.

[0284] FIG13 is a schematic diagram of a signal receiving device according to an embodiment of the present application. As shown in FIG13 , the signal receiving device 1300 includes:

[0285] A first sending unit 1301 is configured to 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;

[0286] A second sending unit 1302 is configured to send downlink control information (DCI); and

[0287] A receiving unit 1303 receives 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.

[0288] In some embodiments, the downlink control information indicates or activates the uplink transmission, and the uplink transmission includes:

[0289] - Physical Uplink Shared Channel (PUSCH) transmission based on dynamic grant; or

[0290] - PUSCH transmission based on a Type 2 configured grant; or

[0291] - Physical Uplink Control Channel (PUCCH) transmission; or

[0292] - Semi-persistent Sounding Reference Signal (SRS) transmission; or

[0293] -Aperiodic SRS transmission.

[0294] In some embodiments, the uplink transmission scheme includes at least one of the following:

[0295] Simultaneously performing a first uplink transmission based on the first uplink or combined TCI state and a second uplink transmission based on the second uplink or combined 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;

[0296] performing a first uplink transmission based on the first uplink or combined TCI state and a second uplink transmission based on the second uplink or combined TCI state simultaneously; the first uplink transmission and the second uplink transmission using a first set of power control parameters;

[0297] performing a first uplink transmission based on the first uplink or combined TCI state and a second uplink transmission based on the second uplink or combined TCI state simultaneously; the first uplink transmission and the second uplink transmission using a second set of power control parameters;

[0298] 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;

[0299] 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;

[0300] Performing a first uplink transmission based on the first uplink or combined TCI state and a second uplink transmission based on the second uplink or combined TCI state through time division multiplexing (TDM); wherein the first uplink transmission is based on the first uplink or combined TCI state first and then on the second uplink or combined TCI state, using a first set of power control parameters, and the second uplink transmission is based on a second set of power control parameters;

[0301] performing a first uplink transmission based on the first uplink or combined TCI state and a second uplink transmission based on the second uplink or combined TCI state through time division multiplexing (TDM); wherein the first uplink transmission is based on the second uplink or combined TCI state first and then on the first uplink or combined TCI state, using a first set of power control parameters and the second uplink transmission is based on a second set of power control parameters;

[0302] 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.

[0303] The above embodiments are merely exemplary of the present invention, but the present invention is not limited thereto. Appropriate modifications may be made based on the above embodiments. For example, the above embodiments may be used alone, or one or more of the above embodiments may be combined.

[0304] It is worth noting that the above description only describes the components or modules related to the present application, but the present application is not limited thereto. The signal receiving device 1300 may also include other components or modules. For details of these components or modules, reference may be made to related technologies.

[0305] In addition, for the sake of simplicity, FIG13 only illustrates the connection relationship or signal direction between various components or modules. However, it should be clear to those skilled in the art that various related technologies such as bus connection can be used. The above-mentioned components or modules can be implemented by hardware facilities such as processors, memories, transmitters, and receivers; the implementation of this application is not limited to this.

[0306] As can be seen from the above embodiments, 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 the uplink transmission scheme indicated by the downlink control information (DCI). As a result, the terminal device can 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, thereby improving uplink transmission throughput or reliability.

[0307] Embodiments of the fifth aspect

[0308] An embodiment of the present application also provides a communication system, and reference may be made to FIG1 . The contents that are the same as those in the embodiments of the first to fourth aspects will not be repeated.

[0309] In some embodiments, the communication system 100 may include at least:

[0310] A network device that sends transmission configuration indication (TCI) state indication information, wherein the TCI state indication information indicates a first uplink or joint TCI state and a second uplink or joint TCI state; sends downlink control information (DCI) and receives uplink transmission;

[0311] A terminal device that receives the transmission configuration indication (TCI) status 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 the uplink transmission scheme indicated by the downlink control information.

[0312] An embodiment of the present application further provides a network device, which may be, for example, a base station, but the present application is not limited thereto and may also be other network devices.

[0313] Figure 14 is a schematic diagram illustrating the structure of a network device according to an embodiment of the present application. As shown in Figure 14 , network device 1400 may include a processor 1410 (e.g., a central processing unit (CPU)) and a memory 1420 ; the memory 1420 is coupled to the processor 1410 . The memory 1420 may store various data and may also store an information processing program 1430 , which is executed under the control of the processor 1410 .

[0314] For example, the processor 1410 may be configured to execute a program to implement the signal reception method as described in the embodiment of the second aspect. For example, the processor 1410 may be configured to perform the following control: sending 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; sending downlink control information (DCI); and receiving 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.

[0315] In addition, as shown in FIG14 , network device 1400 may further include: a transceiver 1440 and an antenna 1450, etc.; wherein, the functions of the above components are similar to those in the prior art and are not described in detail here. It is worth noting that network device 1400 does not necessarily include all the components shown in FIG14 ; in addition, network device 1400 may also include components not shown in FIG14 , and reference may be made to the prior art for details.

[0316] The embodiment of the present application also provides a terminal device, but the present application is not limited thereto and may also be other devices.

[0317] Figure 15 is a schematic diagram of a terminal device according to an embodiment of the present application. As shown in Figure 15 , terminal device 1500 may include a processor 1510 and a memory 1520. Memory 1520 stores data and programs and is coupled to processor 1510. It should be noted that this diagram is exemplary; other types of structures may be used to supplement or replace this structure to implement telecommunication or other functions.

[0318] For example, the processor 1510 may be configured to execute a program to implement the signal transmission method as described in the embodiment of the first aspect. For example, the processor 1510 may be configured to perform the following control: 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 the uplink transmission scheme indicated by the downlink control information.

[0319] As shown in Figure 15 , the terminal device 1500 may further include: a communication module 1530, an input unit 1540, a display 1550, and a power supply 1560. The functions of these components are similar to those in the prior art and are not described in detail here. It is worth noting that the terminal device 1500 does not necessarily include all of the components shown in Figure 15 , and these components are not essential. Furthermore, the terminal device 1500 may also include components not shown in Figure 15 , for which reference may be made to the prior art.

[0320] An embodiment of the present application also provides a computer program, wherein when the program is executed in a terminal device, the program causes the terminal device to execute the signal sending method described in the embodiment of the first aspect.

[0321] An embodiment of the present application also provides a storage medium storing a computer program, wherein the computer program enables a terminal device to execute the signal sending method described in the embodiment of the first aspect.

[0322] An embodiment of the present application also provides a computer program, wherein when the program is executed in a network device, the program causes the network device to execute the signal receiving method described in the embodiment of the second aspect.

[0323] An embodiment of the present application also provides a storage medium storing a computer program, wherein the computer program enables a network device to execute the signal receiving method described in the embodiment of the second aspect.

[0324] The above devices and methods of the present application can be implemented by hardware or by a combination of hardware and software. The present application relates to such a computer-readable program that, when executed by a logic component, enables the logic component to implement the devices or components described above, or enables the logic component to implement the various methods or steps described above. The present application also relates to a storage medium for storing the above program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, etc.

[0325] The method / device described in conjunction with the embodiments of the present application can be directly embodied as hardware, a software module executed by a processor, or a combination of the two. For example, one or more of the functional block diagrams shown in the figure and / or one or more combinations of functional block diagrams can correspond to various software modules of the computer program flow or to various hardware modules. These software modules can respectively correspond to the various steps shown in the figure. These hardware modules can be implemented by solidifying these software modules, for example, using a field programmable gate array (FPGA).

[0326] The software module may be located in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. A storage medium may be coupled to a processor so that the processor can read information from the storage medium and write information to the storage medium; or the storage medium may be an integral part of the processor. The processor and the storage medium may be located in an ASIC. The software module may be stored in the memory of the mobile terminal or in a memory card that can be inserted into the mobile terminal. For example, if the device (such as a mobile terminal) uses a large-capacity MEGA-SIM card or a large-capacity flash memory device, the software module may be stored in the MEGA-SIM card or the large-capacity flash memory device.

[0327] One or more of the functional blocks and / or one or more combinations of functional blocks described in the accompanying drawings 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 device, a discrete gate or transistor logic device, a discrete hardware component, or any appropriate combination thereof for performing the functions described in this application. One or more of the functional blocks and / or one or more combinations of functional blocks described in the accompanying drawings may also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in communication with a DSP, or any other such configuration.

[0328] The present application has been described above in conjunction with specific embodiments. However, those skilled in the art should understand that these descriptions are merely illustrative and are not intended to limit the scope of protection of the present application. Those skilled in the art may make various modifications and variations to the present application based on the spirit and principles of the present application, and such modifications and variations are also within the scope of the present application.

[0329] Regarding the implementation methods including the above embodiments, the following additional notes are also disclosed:

[0330] 1. A signal transmission method, wherein the method comprises:

[0331] The terminal device receives 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;

[0332] The terminal device receives downlink control information (DCI); and

[0333] 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 the uplink transmission scheme indicated by the downlink control information.

[0334] 2. The method according to Note 1, wherein the terminal device receives the downlink control information within the effective time of the first uplink or joint TCI state and the second uplink or joint TCI state.

[0335] 3. The method according to Note 1, wherein the downlink control information indicates or activates the uplink transmission, and the uplink transmission includes:

[0336] Physical Uplink Shared Channel (PUSCH) transmission based on dynamic grant; or

[0337] PUSCH transmission based on a Type 2 configured grant; or

[0338] Physical Uplink Control Channel (PUCCH) transmission; or

[0339] Semi-persistent Sounding Reference Signal (SRS) transmission; or

[0340] Aperiodic SRS transmission.

[0341] 4. The method according to any one of Notes 1 to 3, wherein the uplink transmission scheme includes:

[0342] 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 at the same time; 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.

[0343] 5. The method according to Note 4, wherein 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.

[0344] 6. The method according to any one of Notes 1 to 3, wherein the uplink transmission scheme includes:

[0345] 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 at the same time; the first uplink transmission and the second uplink transmission use a first set of power control parameters.

[0346] 7. The method according to Note 6, wherein the terminal device uses two panels to simultaneously perform the first uplink transmission and the second uplink transmission to the first transmission receiving point.

[0347] 8. The method according to any one of Notes 1 to 3, wherein the uplink transmission scheme includes:

[0348] 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 at the same time; the first uplink transmission and the second uplink transmission use a second set of power control parameters.

[0349] 9. The method according to Note 8, wherein the terminal device uses two panels to simultaneously perform the first uplink transmission and the second uplink transmission to a second transmission receiving point.

[0350] 10. The method according to any one of Notes 1 to 9, wherein the uplink transmission scheme comprises:

[0351] Perform 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.

[0352] 11. The method according to Note 10, wherein the terminal device uses a panel to perform the first uplink transmission to the first transmission receiving point.

[0353] 12. The method according to any one of Notes 1 to 9, wherein the uplink transmission scheme comprises:

[0354] Perform 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.

[0355] 13. The method according to Note 12, wherein the terminal device uses a panel to perform the second uplink transmission to the second transmission receiving point.

[0356] 14. The method according to any one of Notes 1 to 9, wherein the uplink transmission scheme comprises:

[0357] 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 through time division multiplexing (TDM); wherein the first uplink transmission is first based on the first uplink or joint TCI state and then based on the second uplink or joint TCI state, 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.

[0358] 15. The method according to Note 14, wherein the terminal device first uses a panel to perform the first uplink transmission to a first transmission receiving point, and then uses a panel to perform the second uplink transmission to a second transmission receiving point.

[0359] 16. The method according to any one of Notes 1 to 9, wherein the uplink transmission scheme comprises:

[0360] 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 through time division multiplexing (TDM); wherein the first uplink transmission is first based on the second uplink or joint TCI state and then based on the first uplink or joint TCI state, 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.

[0361] 17. The method according to Note 16, wherein the terminal device first uses a panel to perform the second uplink transmission to the second transmission receiving point, and then uses a panel to perform the first uplink transmission to the first transmission receiving point.

[0362] 18. The method according to any one of Notes 4 to 17, 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.

[0363] 19. The method according to Note 1, wherein, for multiple transmission reception points (mTRP) based on single downlink control information (sDCI), the terminal device performs the uplink transmission according to the downlink control information.

[0364] 20. The method according to Note 1, wherein, for a multiple transmission reception point (mTRP) based on multiple downlink control information (mDCI), the terminal device performs the uplink transmission according to the downlink control information.

[0365] 21. A method according to any one of Notes 1 to 20, wherein multiple uplink transmission schemes are configured for the terminal device through RRC signaling, and one of the multiple uplink transmission schemes is indicated by the downlink control information.

[0366] 22. A method according to any one of Notes 1 to 21, wherein a physical uplink control channel (PUCCH) resource is configured by RRC signaling or MAC CE to use one of multiple uplink transmission schemes, and when the PUCCH resource is indicated by the DCI, the terminal device transmits the PUCCH using the configured uplink transmission scheme.

[0367] 23. The method according to Note 1, wherein, for multiple transmission reception points (mTRP) based on single downlink control information (sDCI), the uplink transmission scheme includes:

[0368] performing a first uplink transmission based on the first uplink or combined TCI state and a second uplink transmission based on the second uplink or combined TCI state simultaneously; 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

[0369] At least one of the following transmission schemes:

[0370] performing a first uplink transmission based on the first uplink or combined TCI state and a second uplink transmission based on the second uplink or combined TCI state simultaneously; the first uplink transmission and the second uplink transmission using a first set of power control parameters;

[0371] performing a first uplink transmission based on the first uplink or combined TCI state and a second uplink transmission based on the second uplink or combined TCI state simultaneously; the first uplink transmission and the second uplink transmission using a second set of power control parameters;

[0372] 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;

[0373] 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;

[0374] Performing a first uplink transmission based on the first uplink or combined TCI state and a second uplink transmission based on the second uplink or combined TCI state through time division multiplexing (TDM); wherein the first uplink transmission is based on the first uplink or combined TCI state first and then on the second uplink or combined TCI state, using a first set of power control parameters, and the second uplink transmission is based on a second set of power control parameters;

[0375] 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 through time division multiplexing (TDM); wherein the first uplink transmission is first based on the second uplink or joint TCI state and then based on the first uplink or joint TCI state, 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.

[0376] 24. The method according to Note 1, wherein, for multiple transmission reception points (mTRPs) based on multiple downlink control information (mDCI), the uplink transmission scheme includes:

[0377] performing a first uplink transmission based on the first uplink or combined TCI state and a second uplink transmission based on the second uplink or combined TCI state simultaneously; the first uplink transmission and the second uplink transmission use a first set of power control parameters; and

[0378] 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 at the same time; the first uplink transmission and the second uplink transmission use a second set of power control parameters.

[0379] 25. The method according to Note 1, wherein, for multiple transmission reception points (mTRPs) based on multiple downlink control information (mDCI), the uplink transmission scheme includes:

[0380] performing a first uplink transmission based on the first uplink or combined TCI state and a second uplink transmission based on the second uplink or combined TCI state simultaneously; the first uplink transmission and the second uplink transmission use a first set of power control parameters; and / or

[0381] performing a first uplink transmission based on the first uplink or combined TCI state and a second uplink transmission based on the second uplink or combined TCI state simultaneously; the first uplink transmission and the second uplink transmission using a second set of power control parameters;

[0382] and at least one of the following transmission schemes:

[0383] 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;

[0384] 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;

[0385] Performing a first uplink transmission based on the first uplink or combined TCI state and a second uplink transmission based on the second uplink or combined TCI state through time division multiplexing (TDM); wherein the first uplink transmission is based on the first uplink or combined TCI state first and then on the second uplink or combined TCI state, using a first set of power control parameters, and the second uplink transmission is based on a second set of power control parameters;

[0386] 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 through time division multiplexing (TDM); wherein the first uplink transmission is first based on the second uplink or joint TCI state and then based on the first uplink or joint TCI state, 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.

[0387] 26. A signal receiving method, wherein the method comprises:

[0388] The network device 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;

[0389] The network device sends downlink control information (DCI); and

[0390] The network device receives 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.

[0391] 27. The method according to note 26, wherein the downlink control information indicates or activates the uplink transmission, and the uplink transmission includes:

[0392] Physical Uplink Shared Channel (PUSCH) transmission based on dynamic grant; or

[0393] PUSCH transmission based on a Type 2 configured grant; or

[0394] Physical Uplink Control Channel (PUCCH) transmission; or

[0395] Semi-persistent Sounding Reference Signal (SRS) transmission; or

[0396] Aperiodic SRS transmission.

[0397] 28. The method according to note 26 or 27, wherein the uplink transmission scheme includes:

[0398] 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 at the same time; 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.

[0399] 29. The method according to note 26 or 27, wherein the uplink transmission scheme includes:

[0400] 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 at the same time; the first uplink transmission and the second uplink transmission use a first set of power control parameters.

[0401] 30. The method according to note 26 or 27, wherein the uplink transmission scheme includes:

[0402] 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 at the same time; the first uplink transmission and the second uplink transmission use a second set of power control parameters.

[0403] 31. The method according to any one of Notes 26 to 30, wherein the uplink transmission scheme comprises:

[0404] Perform 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.

[0405] 32. The method according to any one of Notes 26 to 30, wherein the uplink transmission scheme comprises:

[0406] Perform 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.

[0407] 33. The method according to any one of Notes 26 to 30, wherein the uplink transmission scheme comprises:

[0408] 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 through time division multiplexing (TDM); wherein the first uplink transmission is first based on the first uplink or joint TCI state and then based on the second uplink or joint TCI state, 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.

[0409] 34. The method according to any one of Notes 26 to 30, wherein the uplink transmission scheme comprises:

[0410] 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 through time division multiplexing (TDM); wherein the first uplink transmission is first based on the second uplink or joint TCI state and then based on the first uplink or joint TCI state, 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.

[0411] 35. The method according to any one of Notes 27 to 34, 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.

[0412] 36. A signal transmission method, wherein the method comprises:

[0413] The terminal device receives 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;

[0414] The terminal device receives downlink control information (DCI); and

[0415] The terminal device transmits a 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.

[0416] 37. The method according to Note 36, wherein the PUCCH resource is configured by RRC signaling or MAC CE to use one of multiple uplink transmission schemes, and the terminal device transmits the PUCCH using the configured uplink transmission scheme.

[0417] 38. A signal receiving method, wherein the method comprises:

[0418] The network device 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;

[0419] The network device sends downlink control information (DCI); and

[0420] The network device receives PUCCH; wherein the terminal device transmits the PUCCH based on the first uplink or joint TCI state and / or the second uplink or joint TCI state on the physical uplink control channel (PUCCH) resource indicated by the downlink control information.

[0421] 39. The method according to Note 38, wherein the PUCCH resource is configured by RRC signaling or MAC CE to use one of multiple uplink transmission schemes, and the terminal device transmits the PUCCH using the configured uplink transmission scheme.

[0422] 40. A terminal device comprising a memory and a processor, wherein the memory stores a computer program, and the processor is configured to execute the computer program to implement the signal sending method as described in any one of Notes 1 to 25, 36, and 37.

[0423] 41. A network device comprising a memory and a processor, wherein the memory stores a computer program, and the processor is configured to execute the computer program to implement the signal receiving method as described in any one of Notes 26 to 35, 38, and 39.

Claims

1. A signal transmitting device, comprising: a first receiving unit configured to receive transmission configuration indication state indication information, wherein the transmission configuration indication state indication information indicates a first uplink or joint transmission configuration indication state and a second uplink or joint transmission configuration indication state; a second receiving unit, configured to receive downlink control information; as well as A sending unit, configured to perform uplink transmission according to the uplink transmission scheme indicated by the downlink control information and based on the first uplink or joint transmission configuration indication state and / or the second uplink or joint transmission configuration indication state.

2. The device according to claim 1, wherein The second receiving unit receives the downlink control information within the effective time of the first uplink or joint transmission configuration indication state and the second uplink or joint transmission configuration indication state.

3. The device according to claim 1, wherein The downlink control information indicates or activates the uplink transmission, where the uplink transmission includes: Physical uplink shared channel transmission based on dynamic grant; 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.

4. The device according to claim 1, wherein The uplink transmission scheme includes: Simultaneously performing a first uplink transmission based on the first uplink or joint transmission configuration indication state and a second uplink transmission based on the second uplink or joint transmission configuration indication 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; The sending unit 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.

5. The device according to claim 1, wherein The uplink transmission scheme includes: Simultaneously performing a first uplink transmission based on the first uplink or joint transmission configuration indication state and a second uplink transmission based on the second uplink or joint transmission configuration indication state; the first uplink transmission and the second uplink transmission use a first set of power control parameters; The sending unit uses two panels to simultaneously perform the first uplink transmission and the second uplink transmission to the first transmission receiving point.

6. The device according to claim 1, wherein The uplink transmission scheme includes: Simultaneously performing a first uplink transmission based on the first uplink or joint transmission configuration indication state and a second uplink transmission based on the second uplink or joint transmission configuration indication state; the first uplink transmission and the second uplink transmission use a second set of power control parameters; The sending unit uses two panels to simultaneously perform the first uplink transmission and the second uplink transmission to the second transmission receiving point.

7. The device according to claim 1, wherein The uplink transmission scheme includes: Performing a first uplink transmission based on the first uplink or joint transmission configuration indication state; wherein the first uplink transmission uses a first set of power control parameters; The sending unit uses a panel to perform the first uplink transmission to the first transmission receiving point.

8. The device according to claim 1, wherein The uplink transmission scheme includes: Performing a second uplink transmission based on the second uplink or joint transmission configuration indication state; wherein the second uplink transmission uses a second set of power control parameters; The sending unit uses a panel to perform the second uplink transmission to the second transmission receiving point.

9. The device according to claim 1, wherein The uplink transmission scheme includes: performing a first uplink transmission based on the first uplink or joint transmission configuration indication state and a second uplink transmission based on the second uplink or joint transmission configuration indication state through time division multiplexing; wherein the first uplink transmission uses a first set of power control parameters based on the first uplink or joint transmission configuration indication state and then based on the second uplink or joint transmission configuration indication state, and the second uplink transmission uses a second set of power control parameters; The sending unit first uses a panel to perform the first uplink transmission to a first transmission receiving point, and then uses a panel to perform the second uplink transmission to a second transmission receiving point.

10. The device according to claim 1, wherein The uplink transmission scheme includes: performing a first uplink transmission based on the first uplink or joint transmission configuration indication state and a second uplink transmission based on the second uplink or joint transmission configuration indication state through time division multiplexing; wherein the first uplink transmission uses a first set of power control parameters based on the second uplink or joint transmission configuration indication state and then based on the first uplink or joint transmission configuration indication state, and the second uplink transmission uses a second set of power control parameters; The sending unit first uses a panel to perform the second uplink transmission to the second transmission receiving point, and then uses a panel to perform the first uplink transmission to the first transmission receiving point.

11. The device according to claim 1, wherein 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.

12. The device according to claim 1, wherein For multiple transmission reception points based on single downlink control information, the sending unit performs the uplink transmission according to the downlink control information.

13. The device according to claim 1, wherein For multiple transmission reception points based on multiple downlink control information, the sending unit performs the uplink transmission according to the downlink control information.

14. The device according to claim 1, wherein Multiple uplink transmission schemes are configured for the terminal device through radio resource control signaling, and one of the multiple uplink transmission schemes is indicated by the downlink control information.

15. The device according to claim 1, wherein The physical uplink control channel resources are configured by radio resource control signaling or medium access control control elements to use one of multiple uplink transmission schemes, and when the physical uplink control channel resources are indicated by the downlink control information, the sending unit transmits the physical uplink control channel using the configured uplink transmission scheme.

16. A signal receiving device, wherein: The device comprises: a first sending unit configured to send transmission configuration indication state indication information, wherein the transmission configuration indication state indication information indicates a first uplink or joint transmission configuration indication state and a second uplink or joint transmission configuration indication state; A second sending unit, configured to send downlink control information; and A receiving unit that receives uplink transmission; wherein, the terminal device performs the uplink transmission based on the uplink transmission scheme indicated by the downlink control information, based on the first uplink or joint transmission configuration indication state and / or the second uplink or joint transmission configuration indication state.

17. The device according to claim 16, wherein The downlink control information indicates or activates the uplink transmission, where the uplink transmission includes: Physical uplink shared channel transmission based on dynamic grant; 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.

18. The device according to claim 16, wherein The uplink transmission scheme includes at least one of the following: Simultaneously performing a first uplink transmission based on the first uplink or joint transmission configuration indication state and a second uplink transmission based on the second uplink or joint transmission configuration indication 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; Simultaneously performing a first uplink transmission based on the first uplink or joint transmission configuration indication state and a second uplink transmission based on the second uplink or joint transmission configuration indication state; the first uplink transmission and the second uplink transmission use a first set of power control parameters; Simultaneously performing a first uplink transmission based on the first uplink or joint transmission configuration indication state and a second uplink transmission based on the second uplink or joint transmission configuration indication state; 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 transmission configuration indication 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 transmission configuration indication 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 transmission configuration indication state and a second uplink transmission based on the second uplink or joint transmission configuration indication state through time division multiplexing; wherein the first uplink transmission is based on the first uplink or joint transmission configuration indication state first and then on the second uplink or joint transmission configuration indication state, using a first set of power control parameters for the first uplink transmission and using a second set of power control parameters for the second uplink transmission; A first uplink transmission is performed based on the first uplink or joint transmission configuration indication state and a second uplink transmission is performed based on the second uplink or joint transmission configuration indication state through time division multiplexing; wherein the first uplink transmission is first based on the second uplink or joint transmission configuration indication state and then based on the first uplink or joint transmission configuration indication state, 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.

19. The device according to claim 16, wherein 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.

20. A communication system comprising: A network device that sends transmission configuration indication state indication information, wherein the transmission configuration indication state indication information indicates a first uplink or joint transmission configuration indication state and a second uplink or joint transmission configuration indication state; sends downlink control information and receives uplink transmission; A terminal device that receives the transmission configuration indication status indication information; receives the downlink control information; and performs the uplink transmission based on the first uplink or joint transmission configuration indication status and / or the second uplink or joint transmission configuration indication status according to the uplink transmission scheme indicated by the downlink control information.

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