Method and apparatus for uplink transmission

Abstract

Embodiments of the present disclosure relate to methods and apparatus for transmit receive point (TRP) adaptation to improve energy efficiency. A terminal device receives transmission configuration information indicating concurrent transmission or reception on the same transmission resource for two or more TCI states, and performs concurrent transmission or reception on the same transmission resource for the two or more TCI states, respectively. In this way, a new transmission mode using a unified TCI framework is provided, and energy efficiency is improved.

Description

Technical Field

[0001] Various example embodiments relate to the field of telecommunications, and in particular to methods, devices, apparatus, and computer-readable storage media for uplink transmission. Background Art

[0002] In the 3rd Generation Partnership Project 3GPP Release 18, a unified transmission control indicator (TCI) state framework for multiple downlink (DL) and uplink (UL) TCI states in the case of multiple transmission / reception points (TRP) was studied to allow the indication of multiple TCI states to support multi-TRP operation. In addition, it is proposed to promote simultaneous multi-panel UL transmission to improve throughput and reliability.

[0003] However, further research on simultaneous multi-panel UL transmission in multi-TRP systems is still needed to improve energy efficiency. Summary of the invention

[0004] In general, example embodiments of the present disclosure provide a solution for uplink multi-panel transmission.

[0005] In a first aspect, a terminal device is provided. The terminal device may include: one or more processors and one or more transceivers communicatively coupled to the one or more processors, wherein the one or more processors are configured to: receive transmission configuration information from a network device, wherein the transmission configuration information indicates: concurrent transmission or reception on the same transmission resource for two or more transmission configuration indicator (TCI) states; and based on the transmission configuration information, perform concurrent transmission or reception on the same transmission resource for the two or more TCI states, respectively.

[0006] In a second aspect, a network device is provided. The network device may include: one or more processors and one or more transceivers communicatively coupled to the one or more processors, wherein the one or more processors are configured to: generate transmission configuration information, wherein the transmission configuration information indicates: concurrent transmission or reception on the same transmission resource for two or more TCI states; and send the transmission configuration information to a terminal device.

[0007] In a third aspect, a method at a terminal device is provided. The method may include: receiving transmission configuration information from a network device, wherein the transmission configuration information indicates: concurrent transmission or reception on the same transmission resource for two or more TCI states; and performing concurrent transmission or reception on the same transmission resource for the two or more TCI states, respectively, based on the transmission configuration information.

[0008] In a fourth aspect, a method at a network device is provided. The method may include: generating transmission configuration information, wherein the transmission configuration information indicates: concurrent transmission or reception on the same transmission resource for two or more TCI states; and sending the transmission configuration information to a terminal device.

[0009] In a fifth aspect, a device of a terminal device is provided. The device may include: a component for receiving transmission configuration information, wherein the transmission configuration information indicates concurrent transmission or reception on the same transmission resource for two or more TCI states; and a component for performing concurrent transmission or reception on the same transmission resource for the two or more TCI states respectively based on the transmission configuration information.

[0010] In a sixth aspect, a network device is provided. The device may include: a component for generating transmission configuration information, wherein the transmission configuration information indicates: concurrent transmission or reception on the same transmission resource for two or more TCI states; and a component for sending the transmission configuration information.

[0011] In a seventh aspect, a terminal device is provided. The terminal device may include at least one processor; and at least one memory including computer program code, wherein the at least one memory and the computer program code are configured to, together with the at least one processor, enable the terminal device to: receive transmission configuration information, wherein the transmission configuration information indicates: concurrent transmission or reception on the same transmission resource for two or more TCI states; and based on the transmission configuration information, perform concurrent transmission or reception on the same transmission resource for two or more TCI states, respectively.

[0012] In an eighth aspect, a network device is provided. The network device may include at least one processor; and at least one memory, including computer program code, wherein the at least one memory and the computer program code are configured to, together with the at least one processor, cause the network device to: generate transmission configuration information, wherein the transmission configuration information indicates: concurrent transmission or reception on the same transmission resource for two or more TCI states; and send the transmission configuration information to a terminal device.

[0013] In a ninth aspect, a non-transitory computer-readable medium is provided, the non-transitory computer-readable medium comprising program instructions for causing an apparatus to at least execute a method according to any one of the third to fourth aspects above.

[0014] In a tenth aspect, a device is provided, comprising components for: receiving transmission configuration information, wherein the transmission configuration information indicates: concurrent transmission or reception on the same transmission resource for two or more TCI states; and based on the transmission configuration information, performing concurrent transmission or reception on the same transmission resource for two or more TCI states, respectively.

[0015] In an eleventh aspect, a device is provided, comprising components for: generating transmission configuration information, wherein the transmission configuration information indicates: concurrent transmission or reception on the same transmission resource for two or more TCI states; and sending the transmission configuration information.

[0016] In a twelfth aspect, a computer program is provided, which includes instructions that, when executed by a device, cause the device to at least: receive transmission configuration information, wherein the transmission configuration information indicates: concurrent transmission or reception on the same transmission resource for two or more TCI states; and based on the transmission configuration information, perform concurrent transmission or reception on the same transmission resource for two or more TCI states, respectively.

[0017] In a thirteenth aspect, a computer program is provided, which includes instructions that, when executed by a device, cause the device to at least: generate transmission configuration information, wherein the transmission configuration information indicates: concurrent transmission or reception on the same transmission resource for two or more TCI states; and send the transmission configuration information.

[0018] In a fourteenth aspect, a terminal device is provided. The terminal device may include: a receiving circuit system configured to receive transmission configuration information, wherein the transmission configuration information indicates: concurrent transmission or reception on the same transmission resource for two or more TCI states; and an executing circuit system configured to perform concurrent transmission or reception on the same transmission resource for the two or more TCI states respectively based on the transmission configuration information.

[0019] In a fifteenth aspect, a network device is provided. The network device may include: a generating circuit system configured to generate transmission configuration information, wherein the transmission configuration information indicates: concurrent transmission or reception on the same transmission resource for two or more TCI states; and a transmitting circuit system configured to send the transmission configuration information.

[0020] It should be understood that the invention summary is not intended to identify the key or essential features of the embodiments of the present disclosure, nor is it intended to limit the scope of the present disclosure. Other features of the present disclosure will become readily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Some example embodiments will now be described with reference to the accompanying drawings, in which:

[0022] Figure 1 illustrates an example communication network in which embodiments of the present disclosure may be implemented;

[0023] Figure 2A An example schematic diagram of a sounding reference signal (SRS) transmission according to some embodiments of the present disclosure is illustrated;

[0024] Figure 2B Another example schematic diagram of SRS transmission according to some embodiments of the present disclosure is illustrated;

[0025] Figure 3 An example flow chart of a method implemented at a terminal device according to some embodiments of the present disclosure is illustrated;

[0026] Figure 4 An example simplified block diagram illustrating an example of a concurrent transmission configuration according to some embodiments of the present disclosure;

[0027] Figure 5 Another example schematic diagram illustrating a scenario in which antenna panels of a terminal device have different capabilities according to some embodiments of the present disclosure;

[0028] Figure 6 An example simplified block diagram illustrating an example of a concurrent transmission configuration according to some embodiments of the present disclosure;

[0029] Figure 7 illustrates an example simplified block diagram of another example of a concurrent transmission configuration according to some embodiments of the present disclosure;

[0030] Figure 8 illustrates an example simplified block diagram of another example of a concurrent transmission configuration according to some embodiments of the present disclosure;

[0031] Fig. 9 An example flow chart of a method implemented at a terminal device according to some embodiments of the present disclosure is illustrated;

[0032] Fig.10 An example flow chart of a method implemented at a network device according to some embodiments of the present disclosure is illustrated;

[0033] Fig.11 illustrates an example simplified block diagram of an apparatus suitable for implementing embodiments of the present disclosure; and

[0034] Fig.12 An example block diagram of an example computer-readable medium according to some embodiments of the present disclosure is illustrated.

[0035] Throughout the drawings, the same or similar reference numerals refer to the same or similar elements. DETAILED DESCRIPTION

[0036] The principles of the present disclosure will now be described with reference to some example embodiments. It should be understood that these embodiments are described only for illustrative purposes and help those skilled in the art to understand and implement the present disclosure, and do not represent any limitation on the scope of the present disclosure. The disclosure described herein can be implemented in various other ways except for the way described below.

[0037] In the following description and claims, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.

[0038] In this disclosure, references to "one embodiment," "an embodiment," and "an example embodiment," etc., indicate that the described embodiment may include a particular feature, structure, or characteristic, but not every embodiment must include the particular feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Furthermore, when a particular feature, structure, or characteristic is described in conjunction with an embodiment, those skilled in the art recognize that it is within the knowledge of those skilled in the art to affect such feature, structure, or characteristic in conjunction with other embodiments, whether or not explicitly described.

[0039] It should be understood that although the terms "first" and "second" etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, without departing from the scope of the exemplary embodiments, the first element may be referred to as the second element, and similarly, the second element may be referred to as the first element. As used herein, the term "and / or" includes any and all combinations of one or more of the listed terms.

[0040] The term used herein is only used to describe specific embodiments, but is not intended to limit exemplary embodiments. The singular form "one", "one" and "the" used herein also include plural forms, unless the context clearly states otherwise. It is further understood that the term "includes", "comprising", "having", "having", "containing" and / or "containing" specifies the existence of the features, elements and / or components when used in this article, but does not exclude the existence or addition of one or more other features, elements, components and / or their combinations. As used in this article, "at least one of the following: <list of two or more elements>" and "at least one of the lists of <two or more elements>" and similar wording (wherein the list of two or more elements is connected by "and" or "or") refer to at least any one element in these elements, or at least any two or more elements in these elements, or at least all elements in these elements.

[0041] As used in this application, the term "circuitry" may refer to one or more or all of the following:

[0042] (a) a pure hardware circuit implementation (such as an implementation using only analog and / or digital circuitry), and

[0043] (b) a combination of hardware circuitry and software such as (where applicable):

[0044] (i) a combination of analog and / or digital hardware circuits and software / firmware, and

[0045] (ii) any portion of hardware processor(s) (including digital signal processor(s)) with software, software and memory(s) that work together to enable a device (such as a mobile phone or server) to perform various functions), and

[0046] (c) Hardware circuit(s) and / or processor(s), such as microprocessor(s) or portion(s) of microprocessor(s), that require software (e.g., firmware) to operate, but which may not be present when the software is not required for operation.

[0047] This definition of circuitry applies to all uses of the term in this application, including in any claims. As another example, as used in this application, the term circuitry also covers an implementation of only a hardware circuit or processor (or multiple processors) or a portion of a hardware circuit or processor and its accompanying software and / or firmware. For example, if applicable to a particular claim element, the term circuitry also covers a baseband integrated circuit or processor integrated circuit for a mobile device, or a similar integrated circuit in a server, cellular network device, or other computing or network device.

[0048] As used herein, the term "communication network" refers to a network that complies with any suitable communication standard, such as Long Term Evolution (LTE), Advanced LTE (LTE-A), Wideband Code Division Multiple Access (WCDMA), High Speed ​​Packet Access (HSPA), Narrowband Internet of Things (NB-IoT), etc. In addition, the communication between the terminal equipment and the network equipment in the communication network can be performed according to any suitable generation of communication protocol, including but not limited to the third generation (3G), fourth generation (4G), 4.5G, fifth generation (5G) or future sixth generation (6G) communication protocol, and / or any other protocol currently known or to be developed in the future. The embodiments of the present disclosure can be applied to various communication systems. In view of the rapid development of communication, there will certainly be communication technologies and systems that can be used to embody future types of the present disclosure. It should not be regarded as limiting the scope of the present disclosure to the above-mentioned system.

[0049] As used herein, the term "network device" refers to a node in a communication network, via which a terminal device accesses the network and receives services from the network. Depending on the terminology and technology applied, a network device may refer to a base station (BS) or an access point (AP), such as a NodeB (NodeB or NB), an evolved NodeB (eNodeB or eNB), a NR NB (also known as a gNB), a remote radio unit (RRU), a radio head (RH), a remote radio head (RRH), a relay, a low-power node (such as a femto, a pico), etc.

[0050] The term "terminal device" refers to any terminal device capable of wireless communication. As an example and not limitation, the terminal device may also be referred to as a communication device, a user equipment (UE), a subscriber station (SS), a portable subscriber station, a mobile station (MS) or an access terminal (AT). The terminal device may include, but is not limited to, a mobile phone, a cellular phone, a smart phone, a voice over IP (VoIP) phone, a wireless local loop phone, a tablet computer, a wearable terminal device, a personal digital assistant (PDA), a portable computer, a desktop computer, an image capture terminal device (such as a digital camera), a game terminal device, a music storage and playback device, a vehicle-mounted wireless terminal device, a wireless endpoint, a mobile station, a laptop embedded device (LEE), a laptop mounted device (LME), a USB dongle, a smart device, a wireless customer premises equipment (CPE), an Internet of Things (IoT) device, a watch or other wearable device, a head mounted display (HMD), a vehicle, a drone, medical equipment and applications (e.g., remote surgery), industrial equipment and applications (e.g., robots and / or other wireless devices operating in industrial and / or automated processing chain environments), consumer electronic devices, equipment operating on commercial and / or industrial wireless networks, etc. In the following description, the terms "terminal device", "communication device", "terminal", "user equipment", and "UE" may be used interchangeably.

[0051] As used herein, the term "TRP" refers to a transmission reception point having an antenna array (having one or more antenna elements) on the terminal side located at a specific geographical location, which can be used to send and receive signals to / from a network device. Although some embodiments of the present disclosure are described with reference to two TRPs, for example, these embodiments are only for illustrative purposes and help those skilled in the art understand and implement the present disclosure without imposing any limitation on the scope of the present disclosure. It should be understood that the present disclosure described herein can be implemented in various ways other than those described below.

[0052] As mentioned above, a unified transmission control indicator (TCI) state framework for multiple downlink (DL) and uplink (UL) TCI states in multiple transmission / reception point (TRP) scenarios is studied, and a method to facilitate simultaneous multi-panel UL transmission is proposed to improve throughput and reliability. However, further research is still needed to study simultaneous multi-panel UL transmission in multiple TRP systems in order to improve energy efficiency.

[0053] In a multi-TRP scheme, the transmission performed by the UE can be configured to be performed in a concurrent transmission mode. In this mode, the UE assumes two (or more) concurrent transmissions of the same information, for example, the same transport block (TB), the same time-frequency resources, the same DMRS, but sent from the UE side on multiple antenna panels or antenna groups. Due to the similarity with the single frequency network (SFN) in the transmission mode, this concurrent transmission mode may also be referred to as, but not limited to, for example, the SFN mode. In the SFN mode, the transmission rank can be 1 or 2, because a panel or antenna group is typically equipped with up to two transceiver units with dual-polarized antenna elements. Different antenna panels or antenna groups may have different capabilities in terms of the number of ports that can be used for transmission on the panel. In the present disclosure, antenna panels (or panels) and antenna groups (or antenna panels and antenna groups) may be used interchangeably, for example, if one or more antenna panels are used, it may also indicate one or more antenna groups accordingly. In order to keep the description simple, it will not be repeated.

[0054] The inventors note that one of the advantages of multi-TRP operation is to provide robustness or capacity improvement for communications. In order to facilitate simultaneous multi-panel UL transmissions to obtain higher UL throughput / reliability, it is very important to pay attention to multiple TRPs.

[0055] In a unified TCI state framework, a single TCI state may be indicated to the UE, and the TCI state or (multiple) RSs indicated by the TCI state may be used for transmission and reception assumptions of UL transmissions of, for example, the physical downlink control channel (PDCCH), the physical downlink shared channel PDSCH, the channel state indication reference signal (CSI-RS), and / or the physical uplink control channel (PUCCH), the physical uplink shared channel (PUSCH), the sounding reference signal (SRS). In Release 17, only one unified TCI state is indicated to the UE, i.e., used jointly for UL and DL transmissions or used separately for DL ​​and UL transmissions, and it is not feasible to support concurrent transmissions (or other repeated or multi-panel transmissions) within the unified TCI framework. In Release 18, it is intended to support multiple (more than one, e.g., 2) indicated (unified) TCI states; however, in order to improve energy efficiency, further research is still needed on simultaneous multi-panel UL transmissions in a multi-TRP system. Therefore, a new multi-panel uplink transmission solution is needed.

[0056] According to an embodiment of the present disclosure, a solution for TRP adaptation is provided. In the solution, a terminal device receives transmission configuration information indicating concurrent transmission or reception on the same transmission resource for two or more TCI states. The terminal device performs concurrent transmission or reception based on the transmission configuration information. Therefore, a new multi-panel uplink transmission solution is provided to improve energy efficiency.

[0057] The principles and embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. However, it should be noted that these embodiments are only described as examples and are not intended to limit the scope of the present application in any way.

[0058] First reference Figure 1 , which illustrates an example communication system 100 in which embodiments of the present disclosure may be implemented. Figure 1 As shown, system 100 includes two network devices, such as network device 111 and network device 112. Network devices 111 and 112 may each have a corresponding group of antenna ports. In other words, network devices 111 and 112 may be associated with or used as two corresponding TRPs, and therefore in this disclosure, they may also sometimes be referred to as TRP 111 and TRP 112. For clarity, TRP 111 may also be referred to as a first TRP, and TRP 112 may be referred to as a second TRP.

[0059] Each of the network devices 111 and 112 may operate using different frequency bands in both DL and UL. In a communication system, "UL" refers to a communication link in the direction from a terminal device to a network device, while "DL" refers to a communication link in the direction from a network device to a terminal device.

[0060] The system 100 also includes one or more terminal devices, such as the terminal device 101. Depending on the location of the terminal device in the cells of the network devices 111 and 112, the terminal device 101 can be connected to either or both of the network devices 111 or 112, for example wirelessly, and communicate with them in UL and DL. The terminal device 101 can be configured to communicate with the network via one or more TRPs (e.g., two TRPs). The two TRPs can be located in the same cell (intra-cell TRP) or in different cells (inter-cell TRP).

[0061] It should be understood that Figure 1 In the embodiment, the number of network devices and terminal devices is only for illustration purposes and does not represent any limitation. The system 100 may include any suitable number of network devices and terminal devices suitable for implementing the embodiments of the present disclosure.

[0062] The communication in the communication system 100 can be implemented according to any appropriate (multiple) communication protocols, including but not limited to cellular communication protocols such as the third generation (3G), the fourth generation (4G) and the fifth generation (5G) or higher, wireless local area network communication protocols such as the Institute of Electrical and Electronics Engineers (IEEE) 802.11, and / or any other protocol currently known or to be developed in the future. In addition, the communication can utilize any appropriate wireless communication technology, including but not limited to: code division multiple access (CDMA), frequency division multiple access (FDMA), time division multiple access (TDMA), frequency division duplex (FDD), time division duplex (TDD), multiple input multiple output (MIMO), orthogonal frequency division multiplexing (OFDM), discrete Fourier transform spread OFDM (DFT-s-OFDM) and / or any other technology currently known or to be developed in the future.

[0063] Figure 2A An example of SRS transmission / reception from multiple UE panels is shown. For example, the panels and the spatial filters (eg, beams) used SRS transmissions may also be used for downlink (multi-panel) reception. Figure 2B Another example of SRS transmission or reception from multiple UE panels is shown. The UE may be configured to perform transmissions in SFN mode, and the transmissions in SFN mode may include transmissions on (multiple) SRS resources in (multiple) SRS resource sets in SFN mode using a unified TCI state framework. For more details, refer to Figure 2A and Figure 2B Give a description.

[0064] In any example (or figure) in this document referring to SRS transmission, it should be understood that it can refer to any other transmission of UL signals and / or channels, such as DMRS (demodulation reference signal), PUCCH, PUSCH. These signals / channels can be associated with TCI states.

[0065] like Figure 2A and Figure 2B As shown in , the UE may be indicated to have N TCI states (N-DL TCI state, or a joint TCI state for UL and DL, or N-UL TCI state). In addition, the UE may be configured with two SRS resource sets, and each resource set may include one or more SRS resources. Figure 2A and Figure 2BTwo TCI states and two SRS resource sets are shown as examples, but the number of TCI states and SRS resource sets should not be interpreted as limiting the scope of the present disclosure. The SRS resource set may be associated with the indicated TCI state. The indicated TCI code point may include two joint or two UL TCI states. The UE may be configured with two antenna groups; in the example shown, the UE has two panels. The TCI state may include one or more reference signals (e.g., SSB / CSI-RS / tracking reference signals) (or associated with one or more reference signals / configured with one or more reference signals). If the TCI state index / code point is indicated, the UE assumes the transmission of the associated UL / DL signal or channel based on the reference signal of the TCI state. In one example, the TCI state may include a DL RS (e.g., CSI-RS), and if the UE is configured to send SRS resources (or other UL signals / channels) according to the TCI state, it may use the DL RS at least as a spatial reference for the transmission. Similarly, the same RS may be used for DL ​​signal / channel reception (PDCCH / PDSCH). In some cases, the TCI state may include a UL RS. A UE may have one or more indicated TCI states (with corresponding configuration of related DL RS).

[0066] like Figure 2A As shown in , in a configuration of two SRS resource sets (which may include one or more SRS resources, one of which may be an n-port SRS resource), there may be parameters defining whether the SRS resource set follows a first TCI state (TCI 1) of an indicated TCI code point (state) or a second TCI state (TCI 2) of an indicated TCI code point. For example, SRS resource set 1 may be associated with TCI 1, and SRS resource set 2 may be associated with TCI 2. When SRS resource set 1 is triggered (e.g., periodic / aperiodic / semi-persistent transmission is performed), the UE sends SRS on the associated SRS resources in set 1 according to TCI 1 (e.g., utilizing a spatial relationship according to TCI 1). And, when SRS resource set 2 is triggered, the UE sends SRS on the associated SRS resources in set 2 according to TCI 2 (e.g., utilizing a spatial relationship according to TCI 2). In any example, the code point may be referred to as an index.

[0067] Figure 2BAnother example of a UL transmission mode, namely, an SFN mode, is illustrated. In order to configure the SFN mode for the UE, the UE may receive an indication or configuration from the network. After receiving such an indication (or configuration), the network may determine how the UL transmission will be performed in the SFN mode. If the UE determines that an SRS will be sent on associated SRS resources in SRS resource set 1 according to TCI 1 and TCI 2, the UE may send the SRS on the associated SRS resources in SRS resource set 1 according to TCI 1 (e.g., utilizing a spatial relationship according to TCI 1), and send the SRS on the associated SRS resources in SRS resource set 1 according to TCI 2 (e.g., utilizing a spatial relationship according to TCI 4). In other words, when SRS resource set 1 is triggered for SFN transmission (or concurrent transmission of the same signal on multiple TCI states), the UE uses TCI states 1 and 2 to send the SRS resources in the SRS resource set. Alternatively, referring to Figure 2A , the UE may be configured to transmit SRS resources in SRS resource set 2 according to two TCI conditions (TCI 1 and TCI 2). Whether the SRS resource set associated with TCI 1 or TCI 2 is used for SFN transmission may be indicated by network configuration and / or using downlink signaling (e.g., DCI / MAC CE / RRC).

[0068] Reference now Figure 3 , which shows an example of an example process 300 for dynamic TRP adaptation according to an embodiment of the present disclosure. For the purpose of discussion, reference will be made to Figure 1 Process 300 is described. For illustration purposes, network device 111 and terminal device 101 may participate in process 300.

[0069] In the process 300, the network device 111 generates 302 transmission configuration information. The transmission configuration information indicates concurrent transmission or reception on the same transmission resource according to two or more transmission configuration indicator TCI states. Then, the network device sends 304 the transmission configuration information to the terminal device 101. Therefore, the terminal device 101 receives 306 transmission configuration information 303 from the network device. According to the transmission configuration information 303, the terminal device can know that the network device indicates concurrent transmission or reception on the same transmission resource for two or more TCI states to be used.

[0070] In some embodiments, the two or more TCI states include: a first TCI state (TCI 1) associated with a first transmission resource, and a second TCI state (TCI 2) associated with a second transmission resource. The first transmission resource and the second transmission resource may include, for example, an SRS transmission resource. One of the first transmission resource and the second transmission resource may be used as the same transmission resource on which concurrent transmission or reception is performed. It should be noted that there may be X indicated TCI states. Although the present disclosure is described in terms of a first (indicative) TCI state and a second (indicative) TCI state, the present disclosure is not limited thereto, and any other number is applicable.

[0071] like Figure 3 As shown in , the SFN transmission mode is configured for the UE, and the UE may receive an indication to transmit using the SFN scheme from the network device 111. After the network device 111 sends such an indication, the UE may determine that the SRS will be transmitted on (multiple) SRS resources in the first SRS resource set or the second SRS resource set (SRS resource set 1 or SRS resource set 2) according to the two indicated TCI states.

[0072] In one example, a UE may be configured with an SRS resource set (which may have one or more SRS resources). The resource set may be configured to be sent by the UE when the UE determines that it is configured (e.g., indicated) to perform SFN type (e.g., concurrent / simultaneous) transmission. The resources in the SRS resource set may be sent. The SRS resource or SRS resource set may have a parameter indicating that (multiple) SRS resources in the SRS resource set are used for simultaneous UL transmission (e.g., SFN). After receiving the configuration for simultaneous transmission, the UE determines that the configured SRS resources will be used for transmission according to the configured TCI state. In some examples, an SRS resource set with a configuration for simultaneous UL transmission may be associated with one or more TCI states (e.g., it is configured to follow one or more indicated TCI states) and sent when simultaneous UL transmission (e.g., SFN type transmission) is configured. In some examples, an SRS resource set may be configured for simultaneous UL transmission (e.g., SFN type transmission) without being associated with (indicating) a TCI state, and the association is determined when the transmission is performed. For example, when a transmission is triggered / configured / indicated by the network, the TCI state for the transmission is determined.

[0073] In one example, if the UE assumes that a first SRS resource set will be indicated for SFN transmission, the UE assumes transmission on SRS resources (e.g., having n-port SRS resources) in the first SRS resource set in a first indication TCI state and a second indication TCI state according to a configuration of the first SRS resource set, where the first TCI state and the second TCI state can be indication TCI states (e.g., using MAC CE activation and DCI beam indication).

[0074] In some embodiments, SFN type transmission may be statically configured, for example, using RRC signaling. In some examples, SFN type transmission may be aperiodic / semi-persistent transmission, where SFN transmission is triggered by downlink control information (eg, DCI / MAC CE).

[0075] In some embodiments, the same transmission resource on which concurrent transmissions or receptions are performed may be determined as in any of the following alternatives.

[0076] For example, the same transmission resource on which concurrent transmission or reception is performed is determined based on an indication from the network device 111. The indication may indicate a TCI state or a transmission resource for concurrent transmission or reception. For example, a parameter in the TCI state may indicate whether the TCI state is a default TCI for SFN SRS transmission. The default TCI may refer to an indicated TCI state (e.g., indicating TCI 1 or TCI 2), which will be used, for example, to determine transmission resources (such as SRS resource sets) for concurrent transmission, such as SFN. In other words, if the TCI state is the default TCI state for SFN SRS transmission, an SRS resource set configured to follow / associated TCI state beam indications may be used for SFN SRS transmission. The default indicated TCI state may be an indicated TCI state associated with a CORESETPoolIndex value (e.g., 0 or 1).

[0077] As another example, the same transmission resource on which concurrent transmission or reception is performed is determined based on the activation order of the first TCI state and the second TCI state indicated by the network device 111. For example, if the indicated TCI state is located in the same TCI code point, the activation order of the TCI state in the TCI code point defines the order (first and second). For example, if the TCI state is first activated in the indicated TCI code point, the SRS resource configured to follow the TCI state can be determined as the same transmission resource on which concurrent transmission or reception is performed. In some examples, the indicated TCI state associated with the first CORESETPoolindex value (e.g., '0') can be regarded as the first indicated TCI state. In some examples, the indicated TCI state associated with the second CORESETPoolindex value (e.g., '1') can be regarded as the second indicated TCI state. In some examples, the indicated TCI state associated with the first CORESETPoolindex value == '0 / 1' is the first indicated TCI state. In some examples, CORESETs may be grouped using a CORESET group index or similar index, where the CORESETs in a CORESET group are considered to be associated with the same indicated TCI state.

[0078] As another example, the same transmission resource on which concurrent transmission or reception is performed is determined based on the indication order of the first TCI state and the second TCI state indicated by the network device. For example, if the indicated TCI states are indicated in different TCI code points (i.e., each TCI code point includes: a single joint TCI state or a single UL TCI state), and if one of the indicated TCI states is temporarily indicated first, then the SRS resources configured to follow the TCI states can be determined as the same transmission resource on which concurrent transmission or reception is performed.

[0079] As another example, the DCI for triggering the SFN mode may also include an explicit field indicating which TCI state in the TCI code point is selected. In this case, the SRS resources configured to follow the selected TCI state may be determined as the same transmission resources on which concurrent transmission or reception is performed.

[0080] As another example, the same transmission resource on which concurrent transmission or reception is performed is determined based on the priority of the first TCI state and the second TCI state. For example, if the first SRS resource set takes precedence over the second SRS resource set, the SRS resources in the first SRS resource set will be used to send SRS on overlapping symbols of other SRS resources, such as the SRS resource set associated with the second TCI state (when the SFN mode is in an active / configured state).

[0081] In another example, the UE may assume that the transmission of the first SRS resource set and the second SRS resource set is configured to follow the indicated unified TCI state (e.g., the first TCI state and the second TCI state), so that when performing SFN transmission, the second SRS resource set is assumed to not follow the indicated TCI state, and the first SRS resource set is assumed to follow both the first TCI state and the second TCI state, such as Figure 4 as shown in .

[0082] Therefore, in process 300, based on the transmission configuration information, the terminal device 101 can perform 308 concurrent transmission or reception on the same transmission resource for two or more TCI states.

[0083] Through the above process, the present disclosure defines and implements the dynamic use of configured TCI states and multiple SRS resource sets for concurrent transmission or independent scheduling (with independent SRS) of TCI states. And, the solution enables the network to configure concurrent transmissions for UEs, such as SFN mode. Therefore, the UE can perform SRS transmissions, such as from UE TCI states (e.g., associated with one or more panels) in SFN mode / simultaneous uplink transmissions.

[0084] In any example herein, SFN mode may refer to simultaneous UL transmission or downlink reception. In simultaneous transmission or reception, one or more TCI states and / or antenna panels may be used to send the same (SFN) or different information (e.g., SDM).

[0085] However, it is understood that concurrent SRS transmission is only used as an example to describe the solution disclosed in the present disclosure, and the present disclosure is not limited to this. In some embodiments, in addition to SRS, concurrent transmission or reception may also include transmission or reception of one or more of the following items: data on a physical uplink shared channel PUSCH; data on a physical uplink control channel PUCCH; a downlink reference signal DL RS; data on a physical downlink shared channel PDSCH; DL / UL-DMRS; or data on a physical downlink control channel PDCCH. For example, the network device 111 can configure which channel is associated with the SFN transmission scheme, such as PUSCH (but not for PUCCH).

[0086] In some embodiments, for SFN SRS transmissions, the UE may have an asymmetric number of ports per panel, and for at least one SFN SRS transmission, the following operations / logic are performed. Figure 5 A diagram showing antenna panels with different capabilities is shown. More details will be referred to below Figure 5Therefore, the SRS resources configured in the SRS resource set may be configured with different numbers of ports.

[0087] In any of these embodiments, one or more antenna panels may be referred to as an antenna group. An antenna group may refer to an antenna panel or multiple antenna panels. Each antenna panel may include one or more antenna elements. One or more antenna groups may be associated with an index. In one example, antenna panels and antenna groups may sometimes be used interchangeably. An index associated with an antenna group or antenna panel may refer to, for example, a capability index or any index that associates one or more antenna panels with the ability to transmit up to how many ports (e.g., SRS or other UL signal / channel resource ports) on one or more panels. Ports or antenna ports may be defined so that the channel that transmits the symbol on the antenna port is inferred from the channel that conveys another symbol on the same antenna port. Therefore, an SRS resource may have n ports (n=1, 2, 3, 4, etc.), which may refer to the transmission of n signals (or n ports) on the same transmission resource.

[0088] In some of these embodiments, capability information associated with (multiple) antenna panels / (multiple) groups may be indicated to the network using uplink signaling (e.g., PUCCH / PUSCH, beam report, MAC CE, UCI, RRC). For example, the terminal device may be configured to report a DL RS (or UL RS) and an associated capability index value. The index may indicate the capability of the antenna panel / group for receiving a DL RS and / or for using a DL RS as a spatial relationship reference (DL RS used as a reference for UL transmission) for UL transmission.

[0089] In these embodiments, the terminal device 101 is further caused to obtain capabilities of one or more antenna groups, wherein the one or more antenna groups may be associated with two or more TCI states. The terminal device 101 is further caused to determine a transmission resource in the transmission resources, which is associated with the TCI state corresponding to the minimum number of antenna ports in the antenna group.

[0090] For example, the terminal device 101 may determine whether the (antenna) panels associated with the indicated TCI state have different capabilities in terms of the maximum number of antenna ports that can be transmitted. Alternatively, the terminal device 101 may determine this based on at least one SRS resource set (e.g., without explicitly determining the panel), the SRS resource set comprising at least one resource for transmission / reception indicating at least one TCI state and the number of ports associated with the at least one resource. In these examples, e.g. AP1 / TCI1 n=1, e.g. AP2 / TCI2 m=2, where AP1 represents antenna panel 1 and AP2 represents antenna panel 2. AP and TCI may be used interchangeably (e.g., a TCI state is associated with an antenna panel / group, but an SRS resource is associated with a TCI state). As Figure 5 As shown, the SRS resources in the first SRS resource set (associated with TCI 1) may include n-port SRS resources, and the SRS resources in the second SRS resource set (associated with TCI 2) may include m-port SRS resources.

[0091] In one embodiment, the TCI state may be sent using a panel with different panel capabilities (e.g. in terms of ports). In one example, a UE may be configured with SRS resources in an SRS resource set with different numbers of ports. SRS resources may also be associated with a TCI state. In a first example, the terminal device 101 may determine that a TCI state associated with a panel / SRS resource with a lower capability / configuration in terms of ports is configured for SFN type transmission. The terminal device 101 selects a TCI state associated with a lower capability (or the selected TCI state is associated with a lower capability), and the SRS resource set associated with the selected TCI state includes SRS resources to be used to send SRS (e.g., n-port SRS, and for example n=1). The terminal device 101 may then enable n-port SRS transmission using a first TCI state associated with a lower port / transmission capability, while the terminal device 101 sends SRS on the same SRS resource in the resource set to enable n-port transmission using a second TCI state (associated with a higher number of ports). Furthermore, the terminal device 101 does not send SRS on the m-port SRS resources associated with the second TCI state.

[0092] In the second example option 2, the terminal device 101 determines which TCI state is associated with a panel with higher capabilities in terms of ports. And, the terminal device 101 determines the TCI state associated with the higher capabilities (or the selected TCI state is associated with the higher capabilities), such as the m-port SRS resource associated with the second TCI state. Then, the terminal device 101 determines not to send SRS on the m-port SRS resource associated with the second TCI state, but to send SRS using only the n-port transmission of the m-port SRS in the transmission using the first TCI state and the second TCI state. Therefore, in this case, the SRS transmission is performed based on the capabilities of the AP / TCI state with lower capabilities, but the SRS resources (m-port resources) are selected based on the state associated with the antenna panel with higher capabilities / or the SRS resource set with a higher number of ports. In this case, the n-port transmission is performed using one or more TCI states, which are based on the m-port SRS resources in the SRS resource set.

[0093] In other words, the m-port SRS resources in the resource set with higher capability APs are reduced to n-port SRS resources and used for SFN transmission, i.e., SFN transmission is performed based on lower capability (in terms of ports) APs participating in joint / SFN UL transmission. In this case, the selected resources are still SRS resources.

[0094] In another example, for transmission of SRS transmission using both AP / TCIS states in SFN mode, the number of SRS port resources in this case may be limited to 1. In another example, information about the allowed number of SRS port resources may be dynamically indicated (e.g., in DCI) or pre-configured by RRC or RRC in combination with MAC CE.

[0095] In another example option, the terminal device 101 may select a transmission resource (such as SRS) based on which TCI state is assumed to be the default / leading TCI state, or based on the configured TCI (and related SRS) for SRS transmission. The selection of the TCI state may be based on which TCI state will be considered the scheduling TCI state, for example, according to which TCI state receives scheduling / triggering / configuration / indication. Alternatively, the TCI state may be explicitly indicated in a scheduling message (such as DCI). Therefore, the scheduling state here refers to the TCI state after which a transmission configuration indication (which may also be referred to as a scheduling indication or a triggering indication) is received. The selected TCI state (e.g., TCI 1) is used to determine at least one associated SRS resource in the SRS resource set and the number of configured ports. If the SRS resource set (e.g., the first SRS resource set) is configured with an n-port SRS resource associated with the selected TCI state, and one or more TCI states (e.g., TCI 2) for SFN type transmission are associated with an SRS resource (or antenna panel) with a higher number of ports (e.g., m ports), the UE may determine to use the TCI states (e.g., TCI 1 and TCI 2) configured for transmission to send up to an n-port SRS resource (the first SRS resource) transmission. Alternatively, another TCI state (e.g., TCI 2) may be selected. If the SRS resource set (e.g., the second SRS resource set) is configured with an m-port SRS resource and is associated with the selected TCI state, and one or more TCI states (e.g., TCI 1) for SFN type transmission are associated with another SRS resource (or antenna panel) with a lower number of ports (e.g., n ports), the UE may determine to use the TCI states (e.g., TCI 1 and TCI 2) configured for transmission to send up to an n-port m-port SRS resource (the second SRS resource) transmission. In other words, the selection of how many ports to use for SRS transmission in SFN transmission may be based on the configured ports of the SRS resource associated with the TCI state for SFN transmission or the capabilities of the antenna panel used for transmission. For example, if the m-port SRS resource in the SRS resource set is configured for SFN type transmission using two or more TCI states, the UE determines to send up to the number of used ports (based on the lower one) associated with these two or more TCI states. For example, if the TCI state (or associated antenna panel) associated with the lower transmission capability can support n-port transmission (and n < m), the UE sends up to an n-port m-port SRS resource.

[0096] Through any of the above-described schemes or options, the terminal device can determine on which transmission resource to perform the concurrent transmission described herein.

[0097] Figure 4 The SDM mode or independent scheduling mode is illustrated on the left, and the SFE configuration of SRS with a first indication TCI state and a second indication TCI state is illustrated on the right. It can be seen from the figure that before receiving the SFN configuration, the UE assumes that the SRS is sent on the first SRS resource set in the first TCI state and the SRS is sent on the second SRS resource set in the second TCI state; and after receiving the SFN configuration, the second SRS resource set can be disabled or de-prioritized, so that the SRS is sent only on the first SRS resource set, but follows the first TCI state and the second TCI state respectively.

[0098] In some embodiments, the terminal device 101 may be caused to replace the association between the second transmission resource and the second TCI state by associating the first transmission resource with the second TCI state. In one example, the association between the second transmission resource and the second TCI state may be temporarily replaced. For example, the first SRS resource set replaces the second SRS resource set associated with the second TCI state, so that the UE temporarily deactivates the second SRS resource set (or postpones the transmission of the second SRS resource set or cancels the priority of the second SRS resource set) when the SFN mode is activated / configured. For example, the UE assumes that the transmission on the first SRS resource set and the second SRS resource set is configured to follow the indicated unified TCI state (first and second), thereby assuming that when performing SFN transmission, the second SRS resource set does not follow the indicated TCI state, and assumes that the first SRS resource set follows both the first TCI state and the second TCI state.

[0099] In one example, SRS transmissions performed according to the SFN approach described herein are used as a transmission reference for SFN UL transmissions.

[0100] In the present disclosure, transmission configuration information may be implemented in many different ways, and several example ways will be described below.

[0101] In one embodiment, the transmission configuration information is carried by any of the following items:

[0102] -MAC CE for specific activation of concurrent transmission or reception;

[0103] -MAC CE for activating transmission resources and concurrent transmission or reception;

[0104] - A DCI indication for specific activation of concurrent transmission or reception; or

[0105] - Scheduling DCI indication used to indicate transmission scheduling and concurrent transmission or reception.

[0106] For example, a semi-persistent SRS activation message (e.g., MAC CE) may be used to activate an SRS resource that is marked / flagged / configured as a SFN type resource set. The marking may be in the SRS resource set or resource, or may be provided as part of the activation message. When the SRS resource set is activated (and SFN transmission is indicated), the UE may assume activated SRS resource transmission for both the first TCI state and the second TCI state.

[0107] In some embodiments, the terminal device 101 may also be caused to deactivate transmission resources other than the same transmission resources. For example, after transmitting through the first SRS resource set in SFN mode, the UE may deactivate the second SRS resource set transmission while the first SRS resource set is used for transmission or reception in SFN mode. In some embodiments, the second SRS resource set transmission may not be deactivated, but may continue. Therefore, the terminal device 101 is also caused to perform another transmission or reception on a transmission resource different from the same transmission resource, while performing concurrent transmission or reception on the same transmission resource. In other words, when the UE receives control information from the network so as to transmit through the first SRS resource set or the second SRS resource set in SFN mode (i.e., according to the first indication TCI state and the second indication TCI state), it may assume that another SRS resource set that is not transmitted in SFN mode is still transmitted with the associated TCI state (e.g., the second SRS resource set is transmitted according to the second TCI state).

[0108] In some embodiments, the transmission configuration information may indicate periodic concurrent transmission or reception of RS. In some embodiments, the transmission configuration information indicates aperiodic concurrent transmission or reception of RS. Regarding periodic concurrent transmission, the terminal device 101 may enable aperiodic triggering as described above. For aperiodic concurrent transmission, several alternatives are provided for configuring SRS for SFN transmission using the DCI SRS request indicator. For more details, refer to Figure 6 Give a description.

[0109] In some embodiments, the non-periodic concurrent transmission or reception of RS may be triggered by two pieces of configuration information. The two pieces of configuration information include two RS requests associated with the same resource set identifier ID and the same SRS request trigger value. For example, Figure 6 As shown in , for a single SRS request value indicated in a DCI message, the UE may be configured with two or more different SRS resource sets having the same aperiodic SRS resource set trigger parameter value via RRC. For example, when the UE receives configuration (RRC) of SRS resource sets having one or more identical SRS resource IDs, and these resource sets are configured with the same SRS resource trigger value, the UE may assume that the SRS transmission is a SFN transmission.

[0110] In some embodiments, aperiodic concurrent transmission or reception of RS may be triggered by a DCI indication with a single DCI code point value corresponding to two or more SRS resource sets. For example, when a UE receives an SRS request with a (single) DCI code point value associated with multiple SRS resource sets, it assumes that the SRS resources will be transmitted in SFN fashion. If the UE is configured with a unified TCI state and has been indicated with two TCI states (joint or UL TCI), it transmits SRS on the triggered SRS resources using the indicated TCI state, e.g., it assumes two spatial relationships for SRS transmissions based on the RS indicated by the TCI state.

[0111] In one option, if one or more SRS resource sets are not configured to follow a uniform TCI state, the UE may assume that the indicated uniform TCI state (e.g., a first indicated uniform TCI state and a second indicated uniform TCI state) will be used for transmission. In another option, if one of the SRS resource sets associated with the SRS request DCI code point is configured to follow a uniform TCI state, the UE may assume two spatial relationships for SFN transmission based on the RS indicated by the indicated uniform TCI state.

[0112] In some embodiments, the aperiodic concurrent transmission or reception of RS may be triggered by a DCI indication containing an SRS request value. In other words, for aperiodic SRS transmission, it may be dynamically indicated to the UE whether the triggered SFN transmission follows the TCI state.

[0113] In some embodiments, the SRS request value may be associated with an RS resource or a set of RS resources that include a flag, such as Figure 7 . The flag may indicate that non-periodic concurrent transmission or reception is performed for an RS resource or an RS resource set. For example, for a single SRS request value indicated in a DCI message, the UE may be configured with a single SRS resource set (ID N) having one or more SRS resources (ID Y). In one option, the configuration of the resource set may include an SFN parameter / flag for indicating whether the SRS resource is transmitted in an SFN manner. In another option, the configuration of the SRS resource may include an SFN parameter / flag for indicating whether the SRS resource is transmitted in an SFN manner.

[0114] In some embodiments, Figure 8As shown in , non-periodic concurrent transmission or reception of RS can be triggered by a DCI indication including a flag. The flag can indicate that non-periodic concurrent transmission or reception is performed for an RS resource or an RS resource set. For example, if the UE receives a DCI indicating an SRS request value associated with an SRS resource set, and the DCI includes an SFN flag, the UE can assume SFN transmission according to a first indication unified TCI state and a second indication unified TCI state. Otherwise, the UE can assume an SRS resource set according to an associated TCI state or according to a spatial relationship with which it is configured. In other words, the SFN flag in the DCI can override or replace any spatial relationship previously configured for the SRS resources.

[0115] It should be understood that in any of these embodiments, the TCI state described herein may be a joint TCI state or a UL TCI state.

[0116] In some embodiments, when SNF mode is configured, the UE may perform different transmission modes. The different transmission modes include space division multiplexing, SDM mode, or independent scheduling mode. For example, when the SFN configuration is indicated / configured as inactive for uplink transmission, the UE may operate in SDM mode or independent scheduling mode.

[0117] In other words, the solution also provides switching between the SFN mode and the SDM mode / independent scheduling mode. In some embodiments, the switching can be implemented through resource state configuration information.

[0118] For example, the UE may be configured with an SRS triggering state (first state) associated with two SRS resource sets, and the two resource sets share the same (multiple) SRS resources. In this case, one of the SRS resource sets may be configured to follow the first indication TCI state, and the other SRS resource set may be configured to follow the second indication TCI state. Both SRS resource sets are configured to contain the same (multiple) SRS resources.

[0119] In addition, the UE may also be configured with another SRS triggering state (second state) associated with two resource sets, and the two SRS resource sets have (multiple) unique SRS resources (i.e., do not share (multiple) the same SRS resources). In this case, one of the SRS resource sets may be configured to follow the first indication TCI state, while the other SRS resource set may be configured to follow the second indication TCI state. The SRS resources in each set may have a different number of antenna ports, which reflects, for example, the capabilities of the panel. For example, one panel may have one antenna port and the other panel may have two antenna ports. SRS resources of different sets may have the same configured radio resources, for example, some resources of the two sets may be the same, and so on.

[0120] In some embodiments, the transmission configuration information may include a first resource state indicated in the resource state configuration information. Furthermore, the first resource state configuration information may configure a first resource state related to two or more transmission resource sets for the terminal device. Furthermore, the first resource state may indicate that the two or more transmission resource sets share the same transmission resource.

[0121] For example, using the first resource state indicated by the resource state configuration information, the terminal device 101 can trigger concurrent transmission as described above for SRS and PUSCH. In this case, the first trigger state (ID) can be indicated in the trigger DCI on the PDCCH to trigger SFN-based SRS transmission (or multiple SRS transmissions if there are multiple resources in the set). The SRI indicator in the scheduling DCI can indicate the reference SRS resources to be used for SFN-based PUSCH and the TPMI and RI indications (codebook-based PUSCH). The UE can determine the transmit spatial filter (transmit beam) indicating the TCI state associated with the SRS resource set, and the reference SRS resources in the SRS resource set are used for PUSCH transmissions from different panels.

[0122] In some embodiments, the resource state configuration information may include second resource state configuration information, and the second resource state configuration information may configure a second resource state related to two or more transmission resource sets for the terminal device. The terminal device 101 may also be caused to perform transmission or reception in a transmission mode different from concurrent transmission or reception. In some embodiments, transmission or reception in different transmission modes may include transmission and reception in one of space division multiplexing, SDM mode, or independent scheduling mode.

[0123] For example, using the second resource state configuration information, the terminal device 101 can trigger (multiple) SDM transmissions for SRS and PUSCH. In this case, the second trigger state (ID) can be indicated in the trigger DCI on the PDCCH to trigger SDM-based SRS transmission (or multiple SRS transmissions if there are multiple resources in the set). The SRI indicator in the scheduling DCI can indicate the reference SRS resources to be used for SFN-based PUSCH and the TPMI and RI indications (codebook-based PUSCH). The UE determines the transmit spatial filter (transmit / transmit beam) to be the indicated TCI state associated with the SRS resource set, and the reference SRS resources in the SRS resource set are used for (multiple) PUSCH transmissions (from different panels).

[0124] The DCI may also have explicit information on whether which (if configured to be present as two) or both of the SRS Resource Indicator (SRI) fields are applied. When only one panel is applied, the PUSCH transmission may be a single-panel transmission, while when both are applied, the PUSCH transmission may be performed from two panels in SDM mode. According to these embodiments, dynamic switching between SDM and SFN modes for uplink multi-panel transmission may be achieved.

[0125] Fig. 9 FIG. 9 is a flowchart of an example method 900 implemented at a terminal device according to some embodiments of the present disclosure. For the purpose of discussion, reference will be made to Figure 1 The method 900 is described from the perspective of the terminal device 101 .

[0126] At block 910, the terminal device 101 receives transmission configuration information. The transmission configuration information indicates concurrent transmission or reception on the same transmission resource for two or more TCI states. At block 920, the terminal device 101 performs concurrent transmission or reception on the same transmission resource for the two or more TCI states, respectively, based on the transmission configuration information.

[0127] In some embodiments, the two or more TCI states may include: a first TCI state associated with a first transmission resource, and a second TCI state associated with a second transmission resource, and one of the first transmission resource and the second transmission resource is used as the same transmission resource on which concurrent transmission or reception is performed.

[0128] In some embodiments, the same transmission resource on which concurrent transmission or reception is performed can be determined based on any of the following items: an indication of a TCI state or an indication of a transmission resource for concurrent transmission or reception from a network device; an activation order of a first TCI state and a second TCI state indicated by the network device; an indication order of the first TCI state and the second TCI state indicated by the network device; and a priority of the first TCI state and the second TCI state.

[0129] In some embodiments, the terminal device 101 may also be caused to: replace the association between the second transmission resource and the second TCI state by associating the first transmission resource with the second TCI state.

[0130] In some embodiments, the association between the second transmission resource and the second TCI state may be temporarily replaced.

[0131] In some embodiments, the terminal device 101 may also be caused to: deactivate transmission resources other than the same transmission resource.

[0132] In some embodiments, the transmission configuration information may be carried by any of the following items: a media access control element MAC CE for specific activation of concurrent transmission or reception; a MAC CE for activating both transmission resources and concurrent transmission or reception; a DCI indication for specific activation of concurrent transmission or reception; or a scheduling DCI indication for indicating transmission scheduling and concurrent transmission or reception.

[0133] In some embodiments, the terminal device 101 can also be enabled to: obtain capabilities of one or more antenna groups, where one or more antenna groups are associated with two or more TCI states; and determine one of the transmission resources associated with the TCI state, where the TCI state is associated with the smallest number of antenna ports in the antenna group.

[0134] In some embodiments, the transmission configuration information may indicate periodic or aperiodic concurrent transmission or reception of the RS.

[0135] In some embodiments, non-periodic concurrent transmission or reception of RS can be triggered by any of the following items: two pieces of configuration information, including two RS requests associated with the same reference resource set identifier ID and the same SRS request trigger value; or a DCI indication having a single DCI code point value corresponding to two or more SRS resource sets; or a DCI indication containing an SRS request value, wherein the SRS request value is associated with an RS resource or RS resource set containing a flag, which indicates: non-periodic concurrent transmission or reception is performed for the RS resource or RS resource set; or a DCI indication containing a flag indicating that non-periodic concurrent transmission or reception is performed for the RS resource or RS resource set.

[0136] In some embodiments, the transmission configuration information may include first resource state configuration information, and the first resource state configuration information configures a first resource state related to two or more transmission resource sets for the terminal device.

[0137] In some embodiments, the first resource state may indicate that two or more transmission resource sets share the same transmission resource.

[0138] In some embodiments, the terminal device 101 can also be made to: obtain second resource state configuration information, and the second resource state configuration information configures a second resource state related to two or more transmission resource sets for the terminal device; and perform transmission or reception in a transmission mode different from concurrent transmission or reception.

[0139] In some embodiments, transmission or reception in different transmission modes may include transmission or reception in one of a spatial division multiplexing (SDM) mode and an independent scheduling mode.

[0140] In some embodiments, concurrent transmission or reception may include transmission or reception of one or more of the following items: a sounding reference signal SRS; data on a physical uplink shared channel PUSCH; data on a physical uplink control channel PUCCH; a downlink reference signal DL RS; data on a physical downlink shared channel PDSCH; UL / DL DMRS (demodulation reference signal); or data on a physical downlink control channel PDCCH.

[0141] Fig.10 FIG. 1 is a flow chart showing an example method 1000 implemented at a network device according to some embodiments of the present disclosure. For discussion purposes, reference will be made to Figure 1 Method 1000 is described from the perspective of network device 111 .

[0142] At block 1010 , the network device 111 generates transmission configuration information. The transmission configuration information indicates concurrent transmission or reception on the same transmission resource for two or more TCI states. At block 1020 , the network device 111 sends the transmission configuration information to the terminal device 101 .

[0143] In some embodiments, the two or more TCI states may include: a first TCI state associated with a first transmission resource, and a second TCI state associated with a second transmission resource. And, one of the first transmission resource and the second transmission resource is used as the same transmission resource on which concurrent transmission or reception is performed.

[0144] In some embodiments, the network device 111 can also be caused to: send a first indication indicating a TCI state or a transmission resource for concurrent transmission or reception to the terminal device 101, and the same transmission resource on which the concurrent transmission or reception is performed is determined based on the first indication; or send a second indication to the terminal device 101, the second indication indicating: the priority of the transmission resources corresponding to the first TCI state and the second TCI state.

[0145] In some embodiments, the transmission configuration information may be carried by any one of the following items: a media access control element MAC CE for specific activation of concurrent transmission or reception; a MAC CE for activating both transmission resources and concurrent transmission or reception; a DCI indication for specific activation of concurrent transmission or reception; or a scheduling DCI indication for indicating transmission scheduling and concurrent transmission or reception.

[0146] In some embodiments, the transmission configuration information may indicate periodic or aperiodic concurrent transmission or reception of the RS.

[0147] In some embodiments, non-periodic concurrent transmission or reception of RS can be triggered by any of the following items: two pieces of configuration information, including: two RS requests associated with the same reference resource set identifier ID and the same SRS request trigger value; or a DCI indication having a single DCI code point value corresponding to two or more SRS resource sets; or a DCI indication containing an SRS request value, wherein the SRS request value is associated with an RS resource or an RS resource set containing a flag indicating that non-periodic concurrent transmission or reception is performed for the RS resource or the RS resource set; or a DCI indication containing a flag indicating that non-periodic concurrent transmission or reception is performed for the RS resource or the RS resource set.

[0148] In some embodiments, the transmission configuration information may include: first resource state configuration information. And the first resource state configuration information configures a first resource state related to two or more transmission resource sets for the terminal device.

[0149] In some embodiments, the first resource state may indicate that two or more transmission resource sets share the same transmission resource.

[0150] In some embodiments, the network device 111 may also be configured to provide second resource state configuration information to the terminal device. Furthermore, the second resource state configuration information is used to configure a second resource state related to two or more transmission resource sets for the terminal device, so that the terminal device performs transmission or reception in a transmission mode different from concurrent transmission or reception.

[0151] In some embodiments, the second resource state may indicate that two or more transmission resource sets do not share the same transmission resources.

[0152] In some embodiments, transmission or reception in different transmission modes may include transmission or reception in one of SDM mode and independent scheduling mode.

[0153] In some embodiments, concurrent transmission or reception includes transmission or reception of one or more of the following items: a sounding reference signal SRS; data on a physical uplink shared channel PUSCH; data on a physical uplink control channel PUCCH; a downlink reference signal DL RS; data on a physical downlink shared channel PDSCH; or data on a physical downlink control channel PDCCH.

[0154] In some embodiments, a device (e.g., terminal device 101) capable of executing any of the methods in method 900 may include a component for executing the corresponding steps of method 900. The component may be implemented in any suitable form. For example, the component may be implemented in a circuit system or a software module.

[0155] In some embodiments, the apparatus may further include components for performing other steps of some embodiments of method 900. In some embodiments, the components may include at least one processor; and at least one memory including computer program code, the at least one memory and the computer program code being configured to work in conjunction with the at least one processor to enable the above-mentioned operations of the apparatus.

[0156] In some embodiments, a device (e.g., network device 111) capable of performing any of the methods in method 1000 may include a component for performing the corresponding steps of method 1000. The component may be implemented in any suitable form. For example, the component may be implemented in a circuit system or a software module.

[0157] In some embodiments, the apparatus may further include a component for performing the steps of some embodiments of method 1000. In some embodiments, the component includes at least one processor; and at least one memory including computer program code, the at least one memory and the computer program code being configured to work in conjunction with the at least one processor to enable the above-mentioned operation of the apparatus.

[0158] Fig.11 1 is a simplified block diagram of a device 1100 suitable for implementing embodiments of the present disclosure. The device 1100 may be provided to implement a communication device, such as Figure 1The terminal device 101, the terminal device 121, the network device 111 or the network device 112 are shown. As shown in the figure, the device 1100 includes one or more processors 1110, one or more memories 1120 coupled to the processor 1110, and one or more communication modules 1140 coupled to the processor 1110.

[0159] The communication module 1140 is used for two-way communication. The communication module 1140 has at least one antenna to facilitate communication. The communication interface may represent any interface required for communication with other network elements.

[0160] The communication module 1140 may include, for example, one or more transceivers. One or more transceivers may be coupled to one or more antennas to wirelessly send and receive communication signals. One or more transceivers allow a communication device to communicate with other devices wired and / or wireless. A transceiver may support one or more radio technologies. For example, one or more transceivers may include a cellular subsystem, a WLAN subsystem, and / or a Bluetooth™ subsystem. In some examples, one or more transceivers may include a processor, a controller, a radio, a socket, a plug, a buffer, and similar circuits / devices for connecting to a network and communicating on the network.

[0161] Processor 1110 may be of any type suitable for the local technology network, and may include, as non-limiting examples, one or more of: a general purpose computer, a special purpose computer, a microprocessor, a digital signal processor (DSP), and a processor based on a multi-core processor architecture. Device 1100 may have multiple processors, such as application specific integrated circuit chips that are time slaved to a clock synchronized with a main processor.

[0162] The memory 1120 may include one or more non-volatile memories and one or more volatile memories. Examples of non-volatile memories include, but are not limited to, read-only memory (ROM) 1124, electrically programmable read-only memory (EPROM), flash memory, hard disk, compact disk (CD), digital video disk (DVD), and other magnetic storage and / or optical storage. Examples of volatile memories include, but are not limited to, random access memory (RAM) 1122 and other volatile memories that do not persist during power outages.

[0163] Computer program 1130 includes computer executable instructions executed by associated processor 1110. Program 1130 may be stored in ROM 1124. Processor 1110 may perform any suitable actions and processes by loading program 1130 into RAM 1122.

[0164] The embodiments of the present disclosure may be implemented by a program 1130, so that the device 1100 may execute the steps of FIG. Fig.10 Any process of the present disclosure discussed. The embodiments of the present disclosure may also be implemented by hardware or by a combination of software and hardware.

[0165] In some embodiments, the program 1130 may be tangibly contained in a computer-readable medium, which may be included in the device 1100 (such as in the memory 1120) or in other storage devices accessible to the device 600. The device 1100 may load the program 1130 from the computer-readable medium to the RAM 1122 for execution. The computer-readable medium may include any type of tangible non-volatile memory, such as ROM, EPROM, flash memory, hard disk, CD, DVD, etc. Fig.12 An example of a computer readable medium 1200 in the form of a CD or DVD is shown. The computer readable medium has a program 1130 stored thereon.

[0166] Generally, various embodiments of the present disclosure may be implemented using hardware or dedicated circuits, software, logic, or any combination thereof. Some aspects may be implemented using hardware, while other aspects may be implemented using firmware or software that may be executed by a controller, microprocessor, or other computing device. Although various aspects of the embodiments of the present disclosure are illustrated and described as block diagrams, flow charts, or using some other graphical representations, it should be understood that, as non-limiting examples, the blocks, devices, systems, techniques, or methods described herein may be implemented using hardware, software, firmware, dedicated circuits or logic, general-purpose hardware or controllers or other computing devices, or some combination thereof.

[0167] The present disclosure also provides at least one computer program product tangibly stored on a non-transitory computer-readable storage medium. The computer program product includes computer executable instructions, such as instructions included in a program module, which are executed in a device on a target real or virtual processor to perform the above reference Figure 9-10 The method 900 or 1000 described. Typically, a program module includes a routine, program, library, object, class, component, data structure, etc. that performs a specific task or implements a specific abstract data type. In various embodiments, the functions of the program modules can be combined or split between program modules as needed. The machine executable instructions of the program modules can be executed in a local or distributed device. In a distributed device, the program modules can be located in both local and remote storage media.

[0168] The program code for executing the method of the present disclosure can be written in any combination of one or more programming languages. These program codes can be provided to a processor or controller of a general-purpose computer, a special-purpose computer or other programmable data processing device so that the program code is implemented when executed by the processor or controller in the flow chart and / or the block diagram. The program code can be executed completely on the machine, partially on the machine, as an independent software package, partially on the machine and partially on a remote machine, or completely on a remote machine or server.

[0169] In the context of the present disclosure, computer program codes or related data may be carried by any suitable carrier to enable a device, apparatus or processor to perform various processes and operations as described above. Examples of carriers include signals, computer readable media, etc.

[0170] Computer readable medium can be a computer readable signal medium or a computer readable storage medium. Computer readable medium can include but is not limited to electronic, magnetic, optical, electromagnetic, infrared or semiconductor systems, devices or equipment, or any suitable combination of the foregoing. More specific examples of computer readable storage medium will include electrical connections with one or more wires, portable computer floppy disks, hard disks, random access memories (RAM), read-only memories (ROM), erasable programmable read-only memories (EPROM or flash memory), optical fibers, portable compact disk read-only memories (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing. The term "non-transient" used herein is a restriction on the medium itself (i.e., tangible, rather than signal), rather than a restriction on data storage persistence (e.g., RAM and ROM).

[0171] In addition, although the operations are described in a particular order, this should not be understood as requiring such operations to be performed in the particular order shown or in order or performing all the operations shown to obtain the desired result. In some cases, multitasking and parallel processing may be advantageous. Similarly, although several specific implementation details are included in the above discussion, these should not be interpreted as limitations on the scope of the present disclosure, but rather descriptions of features that may be specific to a particular embodiment. Certain features described in the context of a separate embodiment may also be implemented in combination in a single embodiment. On the contrary, the various features described in the context of a single embodiment may also be implemented in multiple embodiments individually or in any suitable sub-combination.

[0172] Although the disclosure has been described in language specific to structural features and / or methodological acts, it should be understood that the disclosure defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are disclosed as example forms of implementing the claims.

Claims

1. A terminal device, comprising: one or more processors; as well as one or more transceivers, communicatively coupled to the one or more processors, wherein the one or more processors are configured to cause the terminal device to: receiving transmission configuration information from a network device, wherein the transmission configuration information indicates: concurrent transmission or reception on the same transmission resource for two or more transmission configuration indicator (TCI) states; and Based on the transmission configuration information, concurrent transmission or reception is performed on the same transmission resource for the two or more TCI states respectively.

2. The terminal device according to claim 1, wherein the two or more TCI states include: a first TCI state associated with the first transmission resource, and a second TCI state associated with the second transmission resource, and wherein one of the first transmission resource and the second transmission resource is used as the same transmission resource on which the concurrent transmission or reception is performed.

3. The terminal device according to claim 1, wherein the same transmission resource on which the concurrent transmission or reception is performed is determined based on any one of the following: an indication from the network device indicating TCI status or transmission resources for concurrent transmission or reception; an activation order of the first TCI state and the second TCI state indicated by the network device; an indication order of the first TCI state and the second TCI state indicated by the network device; The priorities of the first TCI state and the second TCI state.

4. The terminal device according to claim 2 or 3, wherein the terminal device is further configured to: The association between the second transmission resource and the second TCI state is replaced by associating the first transmission resource with the second TCI state.

5. The terminal device according to claim 4, wherein the association between the second transmission resource and the second TCI state is temporarily replaced.

6. The terminal device according to any one of claims 1 to 5, wherein the terminal device is further configured to: Deactivate transmission resources other than the same transmission resource.

7. The terminal device according to any one of claims 1 to 6, wherein the transmission configuration information is carried by any one of the following items: A media access control element MAC CE for specifically activating the concurrent transmission or reception; MAC CE for activating transmission resources and concurrent transmission or reception; A downlink control information DCI indication for specifically activating the concurrent transmission or reception; or The DCI indicates the scheduling of transmissions and concurrent transmissions or receptions.

8. The terminal device according to any one of claims 1 to 7, wherein the terminal device is further configured to: acquiring capabilities of one or more antenna groups, wherein the one or more antenna groups are associated with the two or more TCI states; and A transmission resource among transmission resources associated with a TCI state associated with a smallest number of antenna ports in an antenna group is determined.

9. The terminal device according to any one of claims 1 to 8, wherein the transmission configuration information indicates: periodic or non-periodic concurrent transmission or reception of a reference signal RS.

10. The terminal device according to claim 9, wherein the aperiodic concurrent transmission or reception of the RS is triggered by: Two configuration information, including: Two RS requests associated with the same reference resource set identifier ID and the same SRS request trigger value; or a DCI indication having a single DCI codepoint value corresponding to two or more SRS resource sets; or A DCI indication including an SRS request value, wherein the SRS request value is associated with an RS resource or an RS resource set including a flag, the flag indicating that the non-periodic concurrent transmission or reception is performed for the RS resource or the RS resource set; or A DCI indication including a flag indicating that aperiodic concurrent transmission or reception is performed for an RS resource or a set of RS resources.

11. A terminal device according to any one of claims 1 to 10, wherein the transmission configuration information includes first resource state configuration information, wherein the first resource state configuration information configures a first resource state related to two or more transmission resource sets for the terminal device. 12 . The terminal device according to claim 11 , wherein the first resource status indicates that the two or more transmission resource sets share the same transmission resource.

13. The terminal device according to any one of claims 11 to 12, wherein the terminal device is further configured to: Acquire second resource state configuration information, wherein the second resource state configuration information configures a second resource state related to two or more transmission resource sets for the terminal device; and The transmission or reception is performed in a transmission mode different from the concurrent transmission or reception.

14. The terminal device according to claim 13, wherein the transmission or reception in the different transmission modes comprises: Transmission or reception in one of the following modes: spatial division multiplexing (SDM) mode or independent scheduling mode.

15. The terminal device according to any one of claims 1 to 14, wherein the concurrent transmission or reception comprises transmission or reception of one or more of the following: Sounding reference signal SRS; Data on the physical uplink shared channel PUSCH; Data on the Physical Uplink Control Channel PUCCH; Downlink reference signal DL RS; Data on the Physical Downlink Shared Channel (PDSCH); or Data on the Physical Downlink Control Channel PDCCH.

16. A network device comprising: one or more processors; as well as one or more transceivers communicatively coupled to the one or more processors, and the one or more processors are configured to cause the network device to: Generate transmission configuration information, wherein the transmission configuration information indicates: concurrent transmission or reception on the same transmission resource for two or more transmission configuration indicator (TCI) states; as well as The transmission configuration information is sent to the terminal device.

17. The network device of claim 16, wherein the two or more TCI states include: a first TCI state associated with the first transmission resource, and a second TCI state associated with the second transmission resource, and wherein one of the first transmission resource and the second transmission resource is used as the same transmission resource on which the concurrent transmission or reception is performed.

18. The network device of claim 16, wherein the network device is further caused to: sending a first indication indicating a TCI state or a transmission resource for concurrent transmission or reception to the terminal device, wherein the same transmission resource on which the concurrent transmission or reception is performed is determined based on the first indication; or A second indication is sent to the terminal device, wherein the second indication indicates: the priority of the transmission resources corresponding to the first TCI state and the second TCI state.

19. The network device according to any one of claims 16 to 18, wherein the transmission configuration information is carried by any one of the following items: A media access control element MAC CE for specifically activating the concurrent transmission or reception; MAC CE for activating transmission resources and concurrent transmission or reception; A downlink control information DCI indication for specifically activating the concurrent transmission or reception; or The DCI indicates the scheduling of transmissions and concurrent transmissions or receptions. 20 . The network device according to claim 16 , wherein the transmission configuration information indicates: periodic or aperiodic concurrent transmission or reception of a reference signal (RS).

21. The network device according to claim 20, wherein the non-periodic concurrent transmission or reception of the RS is triggered by: Two configuration information, including: Two RS requests associated with the same reference resource set identifier ID and the same SRS request trigger value; or a DCI indication having a single DCI codepoint value corresponding to two or more SRS resource sets; or A DCI indication including an SRS request value, wherein the SRS request value is associated with an RS resource or an RS resource set including a flag, the flag indicating that the non-periodic concurrent transmission or reception is performed for the RS resource or the RS resource set; or An indication including a flag indicating that aperiodic concurrent transmission or reception is to be performed for an RS resource or a set of RS resources.

22. A network device according to any one of claims 16 to 21, wherein the transmission configuration information includes first resource state configuration information, wherein the first resource state configuration information configures a first resource state related to two or more transmission resource sets for the terminal device.

23. The network device of claim 22, wherein the first resource status indicates that the two or more transmission resource sets share the same transmission resources.

24. The network device according to any one of claims 22 to 23, wherein the network device is further configured to: providing second resource status configuration information to the terminal device, The second resource state configuration information is used to configure a second resource state related to two or more transmission resource sets for the terminal device, so that the terminal device performs transmission or reception in a transmission mode different from the concurrent transmission or reception.

25. The network device of claim 24, wherein the second resource status indicates that the two or more transmission resource sets do not share the same transmission resources.

26. The network device according to claim 24 or 25, wherein the transmission or reception in the different transmission modes comprises: Transmission or reception in one of the following modes: spatial division multiplexing (SDM) mode or independent scheduling mode.

27. The network device according to any one of claims 16 to 26, wherein the concurrent transmission or reception comprises transmission or reception of one or more of the following: Sounding reference signal SRS; Data on the physical uplink shared channel PUSCH; Data on the Physical Uplink Control Channel PUCCH; Downlink reference signal DL RS; Data on the Physical Downlink Shared Channel (PDSCH); or Data on the Physical Downlink Control Channel PDCCH.

28. A method at a terminal device, comprising: receiving transmission configuration information from a network device, wherein the transmission configuration information indicates: concurrent transmission or reception on the same transmission resource for two or more transmission configuration indicator (TCI) states; and Based on the transmission configuration information, concurrent transmission or reception is performed on the same transmission resource for the two or more TCI states respectively.

29. A method at a network device, comprising: Generate transmission configuration information, wherein the transmission configuration information indicates: concurrent transmission or reception on the same transmission resource for two or more transmission configuration indicator (TCI) states; as well as The transmission configuration information is sent to the terminal device.

30. A device of a terminal device, comprising: means for receiving transmission configuration information, wherein the transmission configuration information indicates: concurrent transmission or reception on the same transmission resource for two or more transmission configuration indicator (TCI) states; as well as A means for performing concurrent transmission or reception on the same transmission resource for the two or more TCI states respectively based on the transmission configuration information.

31. A device for a network device, comprising: means for generating transmission configuration information, wherein the transmission configuration information indicates: concurrent transmission or reception on the same transmission resource for two or more transmission configuration indicator (TCI) states; as well as A component for sending the transmission configuration information.

32. A terminal device, comprising: at least one processor; as well as at least one memory including computer program code, wherein the at least one memory and the computer program code are configured to, together with the at least one processor, cause the terminal device to: receiving transmission configuration information, wherein the transmission configuration information indicates concurrent transmission or reception on the same transmission resource for two or more transmission configuration indicator (TCI) states; and Based on the transmission configuration information, concurrent transmission or reception is performed on the same transmission resource for the two or more TCI states respectively.

33. A network device comprising: at least one processor; as well as at least one memory including computer program code, wherein the at least one memory and the computer program code are configured to, together with the at least one processor, cause the network device to: Generate transmission configuration information, wherein the transmission configuration information indicates: concurrent transmission or reception on the same transmission resource for two or more transmission configuration indicator (TCI) states; as well as The transmission configuration information is sent to the terminal device.

34. A non-transitory computer readable medium comprising program instructions for causing an apparatus to at least perform the method according to claim 28 or 29.

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