Signal transmission methods and apparatuses, and storage medium

Abstract

Provided are signal transmission methods and apparatuses, and a storage medium. A signal transmission method comprises: receiving first control information, the first control information being used for triggering an aperiodic SRS resource set; and on the basis of a valid symbol type associated with the aperiodic SRS resource set, transmitting the aperiodic SRS resource set, the valid symbol type including a full-duplex symbol or a non-full-duplex symbol.

Description

Signal transmission methods, devices and storage media

[0001] This disclosure claims priority to Chinese patent application No. 202510038412.2, filed on January 8, 2025, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This disclosure relates to the field of communication technology, and in particular to a signal transmission method, apparatus and storage medium. Background Technology

[0003] In wireless communication networks, two duplexing technologies, subband full duplex (SBFD) and in-band full duplex (IBFD), have been introduced to improve spectral efficiency and resource utilization. While these technologies provide greater flexibility for uplink and downlink transmission, they also bring new requirements to the transmission of the sounding reference signal (SRS) resource set. Summary of the Invention

[0004] On the one hand, a signal transmission method is provided, applied to a first node, the method comprising:

[0005] Receive first control information; the first control information is used to trigger an aperiodic SRS resource set; based on the valid symbol type associated with the aperiodic SRS resource set, transmit the aperiodic SRS resource set, the valid symbol type including full-duplex symbols or non-full-duplex symbols.

[0006] On the other hand, a signal transmission method is provided for application to a second node, the method comprising:

[0007] Send first control information; the first control information is used to trigger an aperiodic SRS resource set; receive an aperiodic SRS resource set, wherein the valid symbol types associated with the aperiodic SRS resource set include full-duplex symbols or non-full-duplex symbols.

[0008] On another front, a signal transmission device is provided for use at a first node, the device comprising:

[0009] The first communication module is used to receive first control information; the first control information is used to trigger an aperiodic SRS resource set; the second communication module is used to transmit the aperiodic SRS resource set based on the valid symbol type associated with the aperiodic SRS resource set, the valid symbol type including full-duplex symbols or non-full-duplex symbols.

[0010] On another front, a signal transmission device is provided for use in a second node, the device comprising:

[0011] The first communication module is used to send first control information; the first control information is used to trigger an aperiodic SRS resource set; the second communication module is used to receive an aperiodic SRS resource set, wherein the valid symbol types associated with the aperiodic SRS resource set include full-duplex symbols or non-full-duplex symbols.

[0012] In another aspect, a communication device is provided, comprising: a memory and a processor; the memory and the processor are coupled; the memory is used to store computer program instructions executable by the processor; and the processor implements the signal transmission method of any of the above embodiments when executing the computer program instructions.

[0013] In another aspect, a computer-readable storage medium is provided, on which computer program instructions are stored, which, when executed on a computer (e.g., a communication device or a signal transmission device), implement the signal transmission method of any of the above embodiments.

[0014] In another aspect, a computer program product is provided, which includes computer program instructions that, when executed, implement the signal transmission method of any of the above embodiments. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in this disclosure, the accompanying drawings used in some embodiments of this disclosure will be briefly described below. Obviously, the drawings described below are merely drawings of some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings.

[0016] Figure 1 is a schematic diagram of an SBFD subband according to some embodiments.

[0017] Figure 2 is a schematic diagram of another SBFD subband provided according to some embodiments.

[0018] Figure 3 is a schematic diagram of an IBFD subband according to some embodiments.

[0019] Figure 4 is a schematic diagram of the architecture of a communication system according to some embodiments.

[0020] Figure 5 is a flowchart of a signal transmission method according to some embodiments.

[0021] Figure 6 is a flowchart of another signal transmission method provided according to some embodiments.

[0022] Figure 7 is a block diagram of a signal transmission device according to some embodiments.

[0023] Figure 8 is a block diagram of another signal transmission device according to some embodiments.

[0024] Figure 9 is a block diagram of a communication device according to some embodiments. Detailed Implementation

[0025] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this disclosure.

[0026] In this disclosure, unless otherwise stated, " / " means "or," for example, A / B can mean A or B. "And / or" in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone. Furthermore, "at least one" means one or more, and "multiple" means two or more. The terms "first," "second," etc., do not limit the quantity or order of execution, and "first," "second," etc., do not necessarily imply differences.

[0027] It should be noted that in this disclosure, the words "exemplarily" or "for example" are used to indicate examples, illustrations, or explanations. Any embodiment or design described as "exemplarily" or "for example" in this disclosure should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of words such as "exemplarily" or "for example" is intended to present the relevant concepts in a specific manner.

[0028] To improve uplink (UL) coverage, reduce UL transmission latency, and increase UL transmission capacity in time division duplex (TDD) systems, subband full-duplex technology has been proposed.

[0029] In related technologies, UL subbands can be configured in some or all downlink (DL) symbols or F symbols, but cannot be configured in UL symbols.

[0030] For example, when a UL subband is configured in a DL symbol, this DL symbol may also be configured with a DL subband. This configuration, which includes both UL and DL subbands, is called an SBFD subband. That is, the UL subband and DL subband (also known as SBFD subband) are simultaneously configured in the DL BWP / F symbol within the DL symbol / slot. Here, the symbol configured with the SBFD subband is called an SBFD symbol, and the symbol without the SBFD subband is called a non-SBFD symbol. However, UL and DL subbands are prohibited from being configured in UL symbols. In this case, the UL portion of the bandwidth (BWP) in the UL symbol is used for UL transmission, while the UL subband in the SBFD symbol is used for uplink transmission. However, the interference conditions in the UL BWP and UL subband are different, so the corresponding UL transmission requires corresponding transmission and configuration parameters to accommodate UL transmission in the UL BWP and UL subband respectively. This complicates the design of UL transmission in the system.

[0031] To further improve system efficiency, full-duplex technologies have been researched, such as IBFD (Integrated Broadband Function) operation. This involves configuring a time-frequency resource within the carrier bandwidth of a carrier, allowing the base station to perform simultaneous transmission and reception on the same frequency. For example, a contiguous physical resource block (PRB) can be configured as an IBFD subband within the carrier bandwidth, and this IBFD subband can be configured in all or some symbols to form a resource for IBFD operation. However, in future systems, how to configure / update the aforementioned IBFD subbands and their configuration is addressed below.

[0032] Configure an SBFD subband in the DL BWP within the DL symbol / slot. An SBFD subband typically includes at least one DL subband and one UL subband.

[0033] For example, in a 100MHz TDD carrier, 20 consecutive resource blocks (RBs) are configured as the UL subband in the DL BWP within the DL symbol / slot. The remaining frequency domain resources of the DL BWP are the DL subband (the frequency domain gap between the UL and DL subbands can be left unconfigured). Alternatively, a DL subband can also be configured in the DL BWP within the DL symbol / slot. In this way, within the DL symbol / slot, the UL subband can be used for UL transmission, and the DL subband can be used for DL ​​transmission.

[0034] For example, as shown in Figure 1, an SBFD subband includes a UL subband and a DL subband. This frequency domain pattern is generally referred to as "DUD" (based on frequency domain structure).

[0035] For example, as shown in Figure 2, an SBFD subband includes a UL subband and a DL subband, with the UL subband located below the DL subband. This frequency domain pattern is generally referred to as "DU" (based on frequency domain structure).

[0036] At the current stage, subband full-duplex technology includes the following characteristics: the base station (BS) is capable of simultaneously performing reception (in the UL subband) and transmission (in the DL subband) in the same time domain. User equipment (UE) is not capable of simultaneously performing reception (in the DL subband) and transmission (in the UL subband) in the same time domain. Here, the UL subband and DL subband are configured in the same orthogonal frequency division multiplexing (OFDM) symbol / slot and are frequency-divided.

[0037] For ease of description, a symbol configured with an SBFD subband can be called an SBFD symbol. A slot containing an SBFD symbol is called an SBFD slot. A symbol not configured with an SBFD subband can be called a non-SBFD symbol (i.e., a regular symbol). A slot not containing an SBFD symbol can be called a non-SBFD slot.

[0038] The aforementioned SBFD subband operation is performed within the DL BWP and UL BWP pair, which are center frequency aligned.

[0039] For example, Figure 3 is a schematic diagram of an IBFD subband according to some embodiments. Part or all of the carrier bandwidth of a carrier is configured as an IBFD subband, and the IBFD is configured in all or part of the symbols.

[0040] For ease of description, the intersection resources of the UL subband and the active UL BWP in the frequency domain are called UL available PRBs, and the intersection resources of the DL subband and the active DL BWP in the frequency domain are called DL available PRBs.

[0041] Symbols configured with IBFD subbands are called IBFD symbols. Slots containing IBFD symbols are called IBFD slots. Symbols not configured with IBFD subbands are called non-IBFD symbols (i.e., a regular symbol). Slots not containing IBFD symbols are called non-IBFD slots.

[0042] Understandably, based on SBFD subband operations, UL transmission is performed only within the UL subband, and DL transmission is performed only within the DL subband. Based on IBFD subband operations, UL and DL transmissions are performed simultaneously and on the same frequency within the IBFD subband; that is, the base station performs UL reception and DL transmission in the same time-frequency domain within the same resource.

[0043] The issues discussed below are the same for both SBFD and IBFD sub-bands, so the following description uses the SBFD sub-band as an example. That is, the SBFD sub-band described below can be replaced by the IBFD sub-band, or the UL or DL ​​sub-band described below can be replaced by the IBFD sub-band. The SBFD symbol described below can be replaced by the IBFD symbol, or the UL or DL ​​sub-band symbol described below can be replaced by the IBFD symbol.

[0044] In related technologies, a base station can send downlink control information (DCI) to a UE via a physical downlink control channel (PDCCH). The DCI's parameter settings trigger one or more aperiodic sounding reference signal (SRS) resource sets. The UE receives the DCI, parses its parameter settings, and determines one or more triggered aperiodic SRS resource sets.

[0045] At the same time, the DCI also indicates an SRS offset indicator field, based on which the number of valid slot offsets can be determined, and based on the number of valid slot offsets, the slot position where the triggered SRS resource set is transmitted can be determined.

[0046] Here, the SRS offset indicator field is used to determine a valid slot offset from a list (or set) of valid slot offsets configured by the radio resource control (RRC) signaling available slot offset list. The valid slot offset describes the number of valid slots from the reference slot n+k to slot m of the SRS resource set where the transmission was triggered. Here, the value of k is configured by the RRC signaling (slotOffset).

[0047] Here, a valid slot is a slot that satisfies the requirement that all SRS resources in the SRS resource set have UL or flexible symbols in the time domain and that meets the minimum timing requirements for the UE to trigger the PDCCH between all SRS resources in that SRS resource set.

[0048] For example, a DCI used to trigger an aperiodic SRS resource set is sent in slot n, and a reference slot n+k is determined. Assuming the number of valid slot offsets is determined to be v, the slots for transmitting the SRS resource set triggered by this DCI are obtained by starting from slot n+k and skipping v valid slots.

[0049] After the introduction of full-duplex symbols (SBFD or IBFD symbols) and non-full-duplex symbols (non-SBFD or non-IBFD symbols), new requirements have emerged for SRS resource set operations based on full-duplex and non-full-duplex symbols.

[0050] In view of this, the present disclosure provides a signal transmission method, the method comprising: receiving first control information; the first control information being used to trigger an aperiodic SRS resource set; and transmitting the aperiodic SRS resource set based on the valid symbol type associated with the aperiodic SRS resource set, wherein the valid symbol type includes full-duplex symbols or non-full-duplex symbols. This mechanism allows the aperiodic SRS resource set to be associated with different types of valid symbols (full-duplex symbols or non-full-duplex symbols), and transmits the aperiodic SRS resource set based on the valid symbol type associated with the aperiodic SRS resource set (full-duplex symbols or non-full-duplex symbols), thereby fully utilizing the advantages of full-duplex and non-full-duplex technologies, improving the transmission strategy of the aperiodic SRS resource set, and enhancing the flexibility of signal transmission.

[0051] The signal transmission method provided in this disclosure can be applied to systems with various communication standards. For example, the systems to which the signal transmission method provided in this disclosure is applicable include, but are not limited to, long term evolution (LTE) systems, various versions based on LTE evolution, 5th generation (5G) communication systems, wireless fidelity (Wi-Fi) systems, 3GPP-related communication systems, ambient internet of things (Ambient IoT) systems, or systems integrating multiple systems. In addition, the signal transmission method provided in this disclosure can also be applied to future-oriented communication systems (such as 6th generation (6G) communication systems), etc., and this disclosure does not limit this application.

[0052] In this embodiment of the disclosure, the network architecture of the mobile communication network (including but not limited to current and future mobile communication networks) may include at least a first communication node and a second communication node. In the uplink, the first communication node may be a terminal-side device (e.g., including but not limited to a terminal), and the second communication node may be a network-side device (e.g., including but not limited to a base station). In the downlink, the second communication node may be a terminal-side device (e.g., including but not limited to a terminal), and the first communication node may be a network-side device (e.g., including but not limited to a base station). Here, the first communication node may be referred to as the first node, and the second communication node may be referred to as the second node.

[0053] For example, taking a first node as a terminal and a second node as a base station, Figure 4 is a schematic diagram of the architecture of a communication system according to some embodiments. The communication system includes a terminal 10 and a base station 20. The terminal 10 and the base station 20 are communicatively connected. There can be one or more terminals 10 and base stations 20, and the number is not limited.

[0054] Here, the terminal can be a terminal-side device (such as, but not limited to, a terminal), an IoT device, etc., and the base station can be a network-side device (such as, but not limited to, a base station), an access network device, etc.

[0055] In some embodiments, terminal 10 can be a device with wireless transceiver capabilities. Terminals can be passive devices, ambient IoT devices, mobile phones, tablets, computers with wireless transceiver capabilities, virtual reality (VR) terminals, augmented reality (AR) terminals, wireless terminals in industrial control, self-driving, remote medical care, smart grids, transportation safety, smart cities, smart homes, etc. The embodiments of this disclosure do not limit the application scenarios. Terminals may also be referred to as users, UEs, access terminals, UE units, UE stations, mobile stations, mobile terminals, remote stations, remote terminals, mobile devices, UE terminals, wireless communication devices, UE agents, or UE devices, etc., and the embodiments of this disclosure do not limit these terms.

[0056] In some embodiments, base station 20 may be a base station in LTE, long term evolution advanced (LTEA) or an evolved Node B (eNB or eNodeB), a base station device in a 5G network, or a base station in a future communication system, etc. The base station may include various macro base stations, micro base stations, home base stations, wireless remotes, reconfigurable intelligent surfaces (RISs), routers, relays, transmit / receive points (TRPs), wireless fidelity (WIFI) devices, UEs and other network-side devices. This disclosure does not limit this aspect.

[0057] It should be noted that Figure 4 is only an exemplary framework diagram. The number of devices included in Figure 4 and the names of each device are not limited. In addition to the devices shown in Figure 4, the communication system may also include other devices, such as core network devices.

[0058] The application scenarios of the embodiments disclosed herein are not limited. The system architecture and business scenarios described in the embodiments of this disclosure are for the purpose of more clearly illustrating the technical solutions of the embodiments of this disclosure, and do not constitute a limitation on the technical solutions provided by the embodiments of this disclosure. As those skilled in the art will know, with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided by the embodiments of this disclosure are also applicable to similar technical problems.

[0059] This disclosure provides a signal transmission method applied to a first node. As shown in Figure 5, the method includes the following steps:

[0060] S101, Receive the first control information.

[0061] Here, the first control information is used to trigger the aperiodic SRS resource set.

[0062] In some embodiments, the first control information is the DCI transmitted in the PDCCH. Here, the DCI is used to trigger the aperiodic SRS resource set.

[0063] S102. Based on the valid symbol type associated with the aperiodic SRS resource set, transmit the aperiodic SRS resource set.

[0064] Here, the valid symbol types for aperiodic SRS resource set association include full-duplex symbols and non-full-duplex symbols. The following description uses SBFD symbols for full-duplex symbols and non-SBFD (denoted as non-SBFD) symbols for non-full-duplex symbols as an example. Here, SBFD symbols can be replaced by IBFD symbols, and non-SBFD symbols can be replaced by non-IBFD (non-IBFD) symbols. Further details will not be elaborated upon here.

[0065] In some embodiments, one SRS resource set is associated with an SBFD symbol, and another SRS resource set is associated with a non-SBFD symbol. The SRS resource set associated with the SBFD symbol is transmitted only within the SBFD symbol and is prohibited from transmission within the non-SBFD symbol. The SRS resource set associated with the non-SBFD symbol is transmitted only within the non-SBFD symbol and is prohibited from transmission within the SBFD symbol.

[0066] In some embodiments, the first control information includes an SRS offset indicator field (denoted as the SRS offset indicator field), which is used to determine the number of valid time slot offsets. The number of valid time slot offsets is included in the list of valid time slot offsets. The number of valid time slot offsets is the number of valid time slots between the reference time slot and the time slot for transmitting the aperiodic SRS resource set.

[0067] Here, the first node transmits the aperiodic SRS resource set based on the valid symbol type associated with the aperiodic SRS resource set, including: determining the number of valid time slots according to the SRS offset indication field; determining the first time slot for transmitting the aperiodic SRS resource set based on the number of valid time slots, the time slot position of the reference time slot, and the type of valid time slots; and transmitting the aperiodic SRS resource set on the first time slot. Here, the type of valid time slot is determined according to the valid symbol type associated with the aperiodic SRS resource set.

[0068] In some embodiments, an aperiodic SRS resource set is triggered via DCI in the PDCCH. Therefore, the valid symbol type associated with an aperiodic SRS resource set is determined based on the valid symbol type of the symbol containing the SRS resource in the triggered aperiodic SRS resource set. For example, if the valid symbol type of the symbol containing the SRS resource in the triggered aperiodic SRS resource set is SBFD symbol, then the valid symbol type associated with that aperiodic SRS resource set is SBFD symbol.

[0069] Understandably, to determine the symbol containing the SRS resource in the triggered aperiodic SRS resource set, it's necessary to first determine the time slot (i.e., the first time slot below) where the aperiodic SRS resource set is located. Furthermore, to determine the slot where the aperiodic SRS resource set is located, the number of valid slot offsets needs to be obtained based on the SRS offset indicator field in the DCI. After obtaining the number of valid slot offsets, it's also necessary to determine what type of slot is a valid slot for this aperiodic SRS resource set. This is because the aperiodic SRS resource set may be associated with SBFD symbols or non-SBFD symbols, which could change the definition of a valid slot.

[0070] To address the above issues, the following specific methods are provided.

[0071] Method 1: In some embodiments, the first control information includes a first indication parameter. The first indication parameter is used to indicate whether the effective time slot is a first type time slot or a second type time slot. The first type time slot is a time slot in which the time domain position of all SRS resources in the SRS resource set is within a non-full-duplex symbol. The second type time slot is a time slot in which the time domain position of all SRS resources in the SRS resource set is within a full-duplex symbol.

[0072] In some embodiments, the first control information includes a first indication parameter, which indicates whether the valid symbol type associated with the aperiodic SRS resource set is a full-duplex symbol or a non-full-duplex symbol.

[0073] For example, taking the first node as the UE and the second node as the base station, the first indication parameter is denoted as parameter A. The determination of the valid time slot or valid symbol type is described in detail below: Here, the valid time slot is either a first-type time slot or a second-type time slot. The first-type time slot includes time slots understood according to the first definition, and the second-type time slot includes time slots understood according to the second definition.

[0074] Here are two definitions: First, a valid slot is a slot that satisfies the following conditions: All SRS resources in the aperiodic SRS resource set triggered by DCI are located in the UL symbol or a flexible symbol without configured SBFD subbands (note: SBFD subbands are not configured in the UL symbol), and the UE's ability to meet the minimum timing requirements between triggering the PDCCH and all SRS resources in that aperiodic SRS resource set is satisfied. Second, a valid slot is a slot that satisfies the following conditions: All SRS resources in the aperiodic SRS resource set triggered by DCI are located in the SBFD symbol (i.e., all SRS resources are SBFD symbols), and the UE's ability to meet the minimum timing requirements between triggering the PDCCH and all SRS resources in that aperiodic SRS resource set is satisfied.

[0075] The base station and the UE agree that the base station transmits a DCI in the PDCCH. This DCI is used to trigger the aperiodic SRS resource set, and an indicator parameter A is set in this DCI. Parameter A has one of the following functions:

[0076] 1) Based on parameter A, it can be determined whether the valid slots corresponding to the valid slot offsets indicated by the SRS offset indicator field in the DCI are understood according to the first definition or the second definition. For example, if parameter A is set in the DCI of the triggered aperiodic SRS resource set to indicate whether the valid slots obtained based on the SRS offset indicator field are based on the second definition or the second definition, then based on the obtained valid slot offsets, combined with the aforementioned reference slots, the slot position for transmitting the aperiodic SRS resource set can be determined. Furthermore, combined with the time-domain resources configured for the SRS resources in the aperiodic SRS resource set, the symbol in which the aperiodic SRS resource set is located can be determined. Furthermore, combined with the configuration of the SBFD subband, it can be determined whether the symbol in which the aperiodic SRS resource set is located is an SBFD symbol or a non-SBFD symbol. Finally, it is determined whether the valid symbol type associated with the aperiodic SRS resource set is an SBFD symbol or a non-SBFD symbol.

[0077] 2) Based on parameter A, the valid symbol type associated with the triggered aperiodic SRS resource set can be determined (based on the associated valid symbol type, the valid slot indicated by the SRS offset indicator field should be understood according to either the first or second definition). For example, if parameter A is set in the DCI of the triggered aperiodic SRS resource set to indicate that the valid symbol associated with the triggered aperiodic SRS resource set is an SBFD symbol, then the valid slot indicated by the SRS offset indicator field should be based on the second definition. If parameter A is set in the DCI of the triggered aperiodic SRS resource set to indicate that the valid symbol associated with the triggered aperiodic SRS resource set is a non-SBFD symbol, then the valid slot indicated by the SRS offset indicator field should be based on the first definition.

[0078] In some embodiments, the aperiodic SRS resource set associated with full-duplex symbols and the aperiodic SRS resource set associated with non-full-duplex symbols share the same list of valid time slot offsets. Alternatively, the aperiodic SRS resource set associated with full-duplex symbols corresponds to a first list of valid time slot offsets, and the aperiodic SRS resource set associated with non-full-duplex symbols corresponds to a second list of valid time slot offsets, with the first and second lists of valid time slot offsets configured independently.

[0079] For example, taking the UE as the first node and the base station as the second node, the base station and the UE agree that the aperiodic SRS resource set associated with the SBFD symbol and the aperiodic SRS resource set associated with the non-SBFD symbol share the same list of valid slot offsets. Thus, the list of valid slot offsets configured by the parameter `availableSlotOffsetList` in the RRC signaling SRS-config is shared by both the aperiodic SRS resource set associated with the SBFD symbol and the aperiodic SRS resource set associated with the non-SBFD symbol. This method reduces the flexibility of configuring the two aperiodic SRS resource sets, but it saves signaling overhead.

[0080] Alternatively, the base station and UE can agree to introduce a new parameter, such as `availableSlotOffsetList_SBFD`, into the RRC signaling SRS-config to configure the list of valid slot offsets for aperiodic SRS resource sets whose valid symbol type is SBFD, i.e., aperiodic SRS resource sets associated with SBFD symbols. In this method, the SRS offset indicator field in the DCI that triggers the aperiodic SRS resource set is associated with its respective list of valid slot offsets based on a consistent valid symbol type (i.e., SBFD symbols or non-SBFD symbols). That is, the first and second definitions above are associated with their respective lists of valid slot offsets; for example, the first definition is associated with the list of valid slot offsets configured by `availableSlotOffsetList`, and the second definition is associated with the list of valid slot offsets configured by `availableSlotOffsetList_SBFD`.

[0081] In some embodiments, the second node sends RRC signaling to the first node; correspondingly, the first node receives the RRC signaling sent by the second node. The RRC signaling includes first configuration information, which configures at least one entry, where each entry is associated with at least one aperiodic SRS resource set, and the at least one aperiodic SRS resource set is not associated with a valid symbol type. In this case, the first control information further includes a second indication parameter, which indicates the triggering of a first entry among the at least one entries, wherein the aperiodic SRS resource set associated with the first entry is associated with the same valid symbol type, and the valid symbol type associated with the aperiodic SRS resource set is determined according to the first indication parameter. Here, the first entry can be one or more, and this disclosure does not limit this.

[0082] In some embodiments, the second indication parameter is located in the SRS request field of the first control information (or the second indication parameter is the SRS request field). The first indication parameter is located in another field outside the SRS request field in the first control information, or the first indication parameter occupies one bit in the SRS request field (denoted as the SRS request field).

[0083] For example, taking the UE as the first node and the base station as the second node, the first indication parameter is denoted as parameter A. The base station and the UE agree that, in the multiple entries configured in the aperiodic SRS-ResourceTriggerList in the RRC signaling, an entry is associated with at least one aperiodic SRS resource set, and this at least one aperiodic SRS resource set is not associated with a valid symbol type. In this case, the base station can indicate through the SRS request field in the DCI that an entry is from the entries configured in the aperiodic SRS-ResourceTriggerList, and that at least one SRS resource set contained in this entry is associated with the same valid symbol type, and that the symbol type is determined based on parameter A.

[0084] For example, the base station and the UE agree that parameter A can be introduced as 1 bit in the DCI, or parameter A can be designed as follows:

[0085] In response to the SBFD subband being configured (and the UE having SBFD capability (at least recognizing the SBFD subband configuration)), and in the DCI that triggers the aperiodic SRS resource set, the SRS request field is set to 3 bits (some are 2 bits), with 1 bit (e.g., the highest or lowest bit) serving as parameter A, and the remaining bits used to indicate the triggered aperiodic SRS resource set. This 1-bit parameter A can be used to indicate whether the triggered aperiodic SRS resource set is associated with an SBFD symbol or a non-SBFD symbol.

[0086] In addition, the base station and UE agree that this SRS request field also indicates the associated CSI-RS, and that the CSI-RS is required to have the same valid symbol type as the triggered aperiodic SRS resource set.

[0087] Understandably, the aforementioned aperiodic SRS resource set determines the associated symbol type based on the symbol type of the transmitted symbol. While aperiodic SRS resource sets triggered by DCI can determine the associated valid symbol type based on the valid symbol type of the symbol containing the aperiodic SRS resource set, this method requires further introduction of the aforementioned parameter A into the DCI, increasing the overhead of the physical layer DCI. Generally, adding overhead at the physical layer is very cautious; therefore, another potential method is proposed below.

[0088] Method 2: In some embodiments, the second node sends RRC signaling to the first node; correspondingly, the first node receives the RRC signaling sent by the second node. The RRC signaling includes second configuration information, which is used to configure the valid symbol type associated with the aperiodic SRS resource set. This configuration within the RRC signaling reduces physical layer overhead.

[0089] In some embodiments, if a periodic SRS resource set is not configured to be associated with a valid symbol type, then by default, the periodic SRS resource set is associated with a non-full-duplex symbol. This can further reduce resource overhead.

[0090] For example, taking the UE as the first node and the base station as the second node, the second configuration information is denoted as parameter B. The base station and UE agree that for an aperiodic SRS resource set, a parameter B is introduced into the signaling SRS-ResourceSet included in the RRC signaling SRS-Config. This parameter B is used to configure the valid symbol type (also called valid symbol type) associated with an aperiodic SRS resource set. That is, the aperiodic SRS resource set is configured to be associated with SBFD symbols or non-SBFD symbols. If no valid symbol type is configured for an aperiodic SRS resource set, the default valid symbol type associated with it is non-SBFD symbols, which can effectively reduce resource overhead.

[0091] If a DCI triggers an aperiodic SRS resource set, the UE can learn about the aperiodic SRS resource set based on the DCI, and determine the valid symbol type associated with the triggered aperiodic SRS resource set based on parameter B in the RRC signaling corresponding to the aperiodic SRS resource set.

[0092] Furthermore, the UE can determine whether the number of valid slot offsets indicated by the SRS offset indicator field in the DCI is based on the first or second definition. Further, based on this number of valid slot offsets, the UE can determine the slot location where the aperiodic SRS resource set was transmitted. For detailed procedures, please refer to the operations described above after obtaining the valid symbol type of the triggered aperiodic SRS resource set; they will not be repeated here.

[0093] For example, taking the UE as the first node and the base station as the second node, the base station and the UE agree that the base station configures the signaling SRS-ResourceId (SRS resource identifier, this parameter is used to identify the SRS resource) in the aperiodic SRS resource set to contain two SRS resources. One SRS resource is configured to be associated with SBFD, and the other SRS resource is configured to be associated with a non-SBFD symbol. If an SRS-ResourceId is configured to contain only one SRS resource, the base station can also configure the associated valid symbol type for that SRS resource. If an SRS resource is not configured with an associated valid symbol type, it is associated with a non-SBFD symbol by default. This method can effectively save SRS-ResourceIds.

[0094] If a DCI triggers an aperiodic SRS resource set, the UE can obtain the information about the aperiodic SRS resource set based on the DCI. Then, based on the two SRS resources corresponding to the SRS-ResourceId contained in the aperiodic SRS resource set, and their respective associated valid symbol types, the UE can simultaneously obtain the SRS resources transmitted in both SBFD and non-SBFD symbols. This method is applicable to DCI-triggered aperiodic SRS resource sets and does not require determining the transmission slot of the aperiodic SRS resource set based on the valid slot offset (i.e., the aperiodic SRS resource set is not provided with RRC signaling availableSlotOffset). Thus, if an aperiodic SRS resource set is triggered by a DCI to be transmitted in some symbols within slot n+k, the UE can transmit the corresponding SRS resources in that aperiodic SRS resource set in those symbols based on a consistent valid symbol type.

[0095] Alternatively, the base station and UE can agree that the base station configures the RRC signaling SRS-ResourceSetId (SRS resource set identifier, used to identify the SRS resource set) to contain two SRS resource sets. One SRS resource set is configured to be associated with SBFD, and the other SRS resource set is configured to be associated with non-SBFD symbols. If an SRS-ResourceSetId is configured to contain only one SRS resource set, the base station can also configure the associated valid symbol type for that SRS resource set. If an SRS resource set is not configured with an associated valid symbol type, it is associated with non-SBFD symbols by default. This method can effectively save SRS-ResourceSetIds.

[0096] If a DCI triggers an aperiodic SRS resource set, the UE can learn about the aperiodic SRS resource set based on the DCI, and based on the identifier (Id) of the aperiodic SRS resource set and the valid symbol types associated with them, it can simultaneously obtain the aperiodic SRS resource set transmitted in both SBFD and non-SBFD symbols. This method is applicable to DCI-triggered aperiodic SRS resource sets and does not require determining the transmission slot of the aperiodic SRS resource set based on the valid slot offset (i.e., the aperiodic SRS resource set is not provided with RRC signaling availableSlotOffset). Thus, if two aperiodic SRS resource sets corresponding to the Id of an aperiodic SRS resource set are triggered by DCI to be transmitted in some symbols in slot n+k, the UE can transmit the aperiodic SRS resource set corresponding to the Id of the aperiodic SRS resource set in some symbols based on a consistent valid symbol type.

[0097] Furthermore, by combining different symbol types, multiple aperiodic SRS resource sets can be triggered through a single DCI. Further, multiple entries are configured in the RRC signaling (i.e., the aperiodic SRS-ResourceTriggerList). Each entry is configured to be associated with at least one SRS resource set, and each SRS resource set is independently configured with an associated valid symbol type. For example, an entry can be configured to be associated with two SRS resource sets, one of which is associated with SBFD symbols and the other with non-SBFD symbols; or one SRS resource set is associated with SBFD symbols and the other with SBFD symbols; or one SRS resource set is associated with non-SBFD symbols and the other with non-SBFD symbols.

[0098] In some embodiments, the second node sends RRC signaling to the first node; correspondingly, the first node receives the RRC signaling sent by the second node. The RRC signaling includes first configuration information, which is used to configure at least one entry, and one entry is associated with at least one aperiodic SRS resource set.

[0099] The first control information also includes a third indication parameter, which indicates the triggering of a first entry in at least one entry, wherein the valid symbol type associated with at least one aperiodic SRS resource set associated with the first entry is independently configured. This achieves resource saving while simultaneously scheduling at least one aperiodic SRS resource, and allows determination of the valid symbol type associated with the scheduled SRS resource set. Here, the first entry can be one or more, and this disclosure does not impose any limitation on this.

[0100] In some embodiments, the third indication parameter is located in the SRS request field (or is an SRS request field) of the first control information.

[0101] For example, taking the UE as the first node and the base station as the second node, multiple entries are configured in the RRC signaling aperiodicSRS-ResourceTriggerList. Each entry is associated with at least one SRS resource set, and each of these SRS resource sets can be independently configured with the associated valid symbol type. For example, an entry may be associated with two SRS resource sets: one SRS resource set may be configured to be associated with SBFD symbols, and the other with non-SBFD symbols; or one SRS resource set may be configured to be associated with SBFD symbols, and the other with SBFD symbols; or one SRS resource set may be configured to be associated with non-SBFD symbols, and the other with non-SBFD symbols.

[0102] Based on the above configuration, if a DCI is used to trigger an aperiodic SRS resource set, then one entry in the aperiodicSRS-ResourceTriggerList configuration entry is triggered, and multiple aperiodic SRS resource sets associated with that entry are also triggered. The SRS offset indicator field in the DCI determines a valid slot offset from the shared list of valid slot offsets configured in availableSlotOffsetList, and this valid slot offset is used for all triggered aperiodic SRS resource sets. For aperiodic SRS resource sets associated with SBFD symbols, the slot position for transmission is determined based on the second definition to resolve this valid slot offset. For aperiodic SRS resource sets associated with non-SBFD symbols, the slot position for transmission is determined based on the first definition to resolve this valid slot offset.

[0103] Alternatively, the base station and UE may agree to configure separate lists of valid slot offset quantities for the first and second definitions described above. For example, the list of valid slot offset quantities for the first definition might be configured based on the RRC signaling `availableSlotOffsetList`, while the list for the second definition might be configured based on the RRC signaling `availableSlotOffsetList-SBFD`. In this case, the information indicated by the SRS offset indicator field in the DCI determines the corresponding valid slot offset quantities from the two lists, and these quantities are used in the corresponding aperiodic SRS resource sets based on a consistent valid symbol type.

[0104] An entry in the aforementioned aperiodicSRS-ResourceTriggerList is allowed to be associated with SRS resource sets of different symbol types. However, it can also be restricted that an entry in the aperiodicSRS-ResourceTriggerList is only associated with SRS resource sets of the same symbol type. Different entries can be associated with SRS resource sets of different symbol types. For example, the first entry can be associated only with SRS resource sets associated with SBFD symbols, and the second can be associated only with SRS resource sets associated with non-SBFD symbols.

[0105] If the aperiodicSRS-ResourceTriggerList contains SRS resource sets associated with different symbol types, the number of entries in the aperiodicSRS-ResourceTriggerList can be expanded to 7 (no more than 4 entries associated with one symbol type), and the CSI request field in the DCI that triggers the aperiodic SRS resource set is 3 bits.

[0106] In some embodiments, the second node sends RRC signaling to the first node; correspondingly, the first node receives the RRC signaling sent by the second node. The RRC signaling is used to configure the correspondence between a fourth indication parameter and the corresponding first indication parameter for each cell in at least one cell. Here, the first control information includes the fourth indication parameter. Thus, configuring the correspondence between the fourth indication parameter and the corresponding first indication parameter for each cell in at least one cell in the RRC allows the first control information to simultaneously indicate the valid symbol type associated with the aperiodic SRS resource set of the triggered cells, reducing resource overhead.

[0107] For example, the "one-to-many" DCI format, where a single DCI schedules multiple physical uplink shared channels (PUSCH) in multiple cells, can also be used to trigger aperiodic SRS resource sets. Some specific methods are as follows: Taking the UE as the first node and the base station as the second node, the first indication parameter is denoted as parameter A, and the fourth indication parameter is denoted as A1. The base station and the UE agree that for a single DCI that triggers aperiodic SRS resource sets in multiple cells, parameter A1 is set in that DCI. An index table is configured through RRC signaling, and the index table includes the correspondence between parameter A1 in the DCI and parameter A corresponding to each cell in at least one cell.

[0108] Here, parameter A1 in the DCI indicates the row index of an index table (e.g., Table 1). The columns of this index table are associated with different cells; for example, the ascending order of the column index corresponds to the ascending order of the cell indexes. A parameter A is set for each {row, column} pair in the index table. The value of parameter A indicates whether the valid symbol type associated with the DCI-triggered aperiodic SRS resource set in the corresponding cell is an SBFD symbol or a non-SBFD symbol. Alternatively, the value of parameter A indicates whether the valid slot corresponding to the number of valid slot offsets indicated by the SRS offset indicator field in the DCI is understood based on either the first or second definition mentioned above. The value of parameter A in the index table is configured by RRC signaling.

[0109] For example, Table 1 shows the correspondence between parameter A1 in the DCI and parameter A (occupying 1 bit) for each of the three cells. The number of cells in the specific index table can be determined based on the number of cells scheduled by the DCI, or pre-configured (RRC signaling), and this disclosure does not impose any restrictions on this.

[0110] Table 1

[0111] For example, assuming a configuration as shown in Table 2, a value of 0 for parameter A indicates that the aperiodic SRS resource set triggered by DCI is associated with an SBFD symbol, and a value of 1 for parameter A indicates that the aperiodic SRS resource set triggered by DCI is associated with a non-SBFD symbol. Thus, if the 2-bit parameter A1 in DCI is set to 1, it means that cell 0, cell 1, and cell 2 are triggered with aperiodic SRS resource sets, and the aperiodic SRS resource sets triggered in cell 0 and cell 2 are associated with non-SBFD symbols, while the aperiodic SRS resource set triggered in cell 1 is associated with SBFD.

[0112] Table 2

[0113] The above method can also be applied to some cells, that is, to some columns. For example, Table 3 illustrates an example applied to cell 0. Table 4 provides a specific example of the values. In fact, the columns corresponding to cells 1 and 2 in Tables 3 and 4 are considered non-existent.

[0114] Table 3

[0115] Table 4

[0116] In some embodiments, the second node sends RRC signaling to the first node; correspondingly, the first node receives the RRC signaling sent by the second node. The RRC signaling is used to configure the correspondence between the SRS request field and the first indication parameter and / or the second indication parameter corresponding to each cell in at least one cell. Here, the first control information includes the SRS request field.

[0117] For example, in a "one-to-many" DCI format, where a single DCI schedules PUSCHs in multiple cells, it can also be used to trigger an aperiodic SRS resource set. Some methods are as follows: Taking the first node as the UE and the second node as the base station as an example, the first indication parameter is denoted as A, and the second indication parameter is denoted as the SRS request field. For a single DCI that triggers an aperiodic SRS resource set in multiple cells, the SRS request field in the DCI and the corresponding SRS request fields for each cell in at least one cell can be referenced in Table 5. Here, the aperiodic SRS resource set corresponding to the cell can be further determined based on the SRS request field corresponding to the cell. It is understood that Table 5 is only an example; the number of cells in the specific table can be determined based on the number of cells scheduled by the DCI or pre-configured, and this disclosure does not impose any restrictions on this.

[0118] Referring to Table 5, the columns of this table are associated with different cells; for example, the ascending order of the column index corresponds to the ascending order of the cell index. An SRS request field is set for each {row, column} pair in the table. The value of this SRS request field is configured by RRC signaling (the function of this SRS request field is the same as the SRS request field in a non-"one-to-many" DCI), and an aperiodic SRS resource set can be determined based on the value of this SRS request field. The row index of this table is indicated by the SRS request field in this DCI.

[0119] For example, if the SRS request field in the DCI indicates that the row index is 0, then the aperiodic SRS resource set associated with the SRS request field associated with cell 0 is triggered to be transmitted in cell 0, the aperiodic SRS resource set associated with the SRS request field associated with cell 1 is triggered to be transmitted in cell 1, and the aperiodic SRS resource set associated with the SRS request field associated with cell 2 is triggered to be transmitted in cell 2.

[0120] Table 5

[0121] Since the aperiodic SRS resource set triggered by DCI needs to be associated with different valid symbol types, the existing method described above is further improved as follows:

[0122] The base station and UE agree that for a single DCI triggering an aperiodic SRS resource set in multiple cells, Table 5 is improved as shown in Table 6, with parameter A (i.e., parameter A in Alt1) introduced for each {row, column} pair. In some embodiments, each {row, column} pair is associated with a parameter A and an SRS request field, or each {row, column} pair is associated with a 3-bit SRS request field, where 1 bit (e.g., the highest / lowest bit) is used as parameter A. The value of parameter A indicates whether the valid symbol type associated with the aperiodic SRS resource set triggered by the DCI in the corresponding cell is an SBFD symbol or a non-SBFD symbol, or whether the value of parameter A indicates that the valid slot offset number indicated by the SRS offset indicator field in the DCI corresponds to a valid slot as understood based on the first or second definition above. The value of parameter A in Table 6 is configured by RRC signaling.

[0123] Table 6

[0124] Assuming a configuration as shown in Table 7, a {row, column} pair is associated with a 3-bit SRS request field. The highest bit is parameter A, and the remaining bits are used to trigger the aperiodic SRS resource set. A value of 0 for parameter A indicates that the aperiodic SRS resource set triggered by DCI is associated with an SBFD symbol, and a value of 1 for parameter A indicates that the aperiodic SRS resource set triggered by DCI is associated with a non-SBFD symbol. Thus, if the 2-bit SRS request field in DCI is set to 1, it means that cell 0, cell 1, and cell 2 are triggered with aperiodic SRS resource sets. Specifically, the aperiodic SRS resource sets triggered in cells 0 and 1 are associated with non-SBFD symbols, while the aperiodic SRS resource set triggered in cell 2 is associated with SBFD.

[0125] Table 7

[0126] The above method can also be applied only to a subset of cells (e.g., cells configured with SBFD subbands), i.e., to a subset of columns. For example, Table 8 illustrates an example that applies only to cell 0. Table 9 provides a specific example of the values.

[0127] Table 8

[0128] Table 9

[0129] In response to the introduction of SBFD symbols and the association of an SRS resource set with a symbol type, namely SBFD symbols or non-SBFD symbols, this disclosure provides the following restrictions for SRS transmission in the time domain.

[0130] Since a slot can contain both SBFD and non-SBFD symbols simultaneously—for example, in a slot, the first 12 symbols are DL symbols configured with SBFD subbands, and the last 2 symbols are UL symbols without SBFD subbands—there exists a situation where an SRS resource is configured to contain n symbols. In the aforementioned slot, some of the n symbols of this SRS resource are SBFD symbols, and the other part are non-SBFD symbols, and this SRS resource or the SRS resource set to which this SRS resource belongs is associated with SBFD symbols. In this case, how should the SRS transmission corresponding to this SRS resource be handled? This disclosure provides the following two alternative methods.

[0131] Option 1: The base station and the UE agree that if, in a slot, the SRS resource is configured with symbols that include both SBFD symbols and non-SBFD symbols, and the SRS resource is determined to be associated with a certain symbol type (i.e., SBFD symbols or non-SBFD symbols), then the SRS transmission corresponding to the SRS resource will not be executed in that slot.

[0132] Option 2: The base station and UE agree that if, within a slot, the SRS resource is configured with symbols containing both SBFD and non-SBFD symbols, and the SRS resource is identified as associated with a specific symbol type (i.e., SBFD or non-SBFD), then the SRS transmission corresponding to that SRS resource is partially executed. For example, the SRS transmission is executed only in symbols with the same valid symbol type associated with the SRS resource, and not in symbols with different valid symbol types associated with the SRS resource (i.e., the SRS transmission in those symbols is cancelled). Thus, within the symbols configured for the SRS resource, the SRS transmission is executed only in a subset of the symbols.

[0133] In this case, the frequency hopping position corresponding to the SRS transmission is still determined based on all symbols configured for the SRS resource. If, after determining the frequency hopping position of the SRS transmission, the SRS transmission falls within symbols of the same valid symbol type associated with the SRS resource, the SRS transmission is executed; if the SRS transmission falls within symbols of a different valid symbol type associated with the SRS resource, the SRS transmission is not executed (cancelled).

[0134] Alternatively, in this case, the frequency hopping position corresponding to the SRS transmission is still determined based on a portion of the symbols configured for the SRS resource. This portion of the symbols is the same type of valid symbols associated with the SRS resource. In other words, only a portion of the symbols configured for the SRS resource are valid, and the SRS transmission is only executed within that portion of valid symbols.

[0135] This disclosure provides a signal transmission method applied to a second node. As shown in Figure 6, the method includes the following steps:

[0136] S201, Send the first control information.

[0137] Here, the first control information is used to trigger the aperiodic SRS resource set.

[0138] In some embodiments, the first control information is the DCI transmitted in the PDCCH. Here, the DCI is used to trigger the aperiodic SRS resource set.

[0139] S202, Receive aperiodic SRS resource set.

[0140] Here, the valid symbol types for aperiodic SRS resource set association include full-duplex symbols or non-full-duplex symbols.

[0141] In some embodiments, the first control information includes an SRS offset indication field, which is used to determine the number of valid time slot offsets. The number of valid time slot offsets is included in the list of valid time slot offsets. The number of valid time slot offsets is the number of valid time slots between the reference time slot and the time slot for transmitting the aperiodic SRS resource set.

[0142] In some embodiments, the first control information includes a first indication parameter, which is used to indicate whether the effective time slot is a first type time slot or a second type time slot. The first type time slot is the time slot in which the time domain position of all SRS resources in the SRS resource set is within a non-full-duplex symbol; the second type time slot is the time slot in which the time domain position of all SRS resources in the SRS resource set is within a full-duplex symbol.

[0143] In some embodiments, the first control information includes a first indication parameter, which is used to indicate the valid symbol type associated with the aperiodic SRS resource set.

[0144] In some embodiments, the first indication parameter is used to indicate whether the valid symbol associated with the aperiodic SRS resource set is a full-duplex symbol or a non-full-duplex symbol.

[0145] In some embodiments, the aperiodic SRS resource set associated with full-duplex symbols and the aperiodic SRS resource set associated with non-full-duplex symbols share the same list of effective time slot offsets; or, the aperiodic SRS resource set associated with full-duplex symbols corresponds to a first list of effective time slot offsets, and the aperiodic SRS resource set associated with non-full-duplex symbols corresponds to a second list of effective time slot offsets, with the first list of effective time slot offsets and the second list of effective time slot offsets configured independently.

[0146] In some embodiments, RRC signaling is sent, the RRC signaling including first configuration information for configuring at least one entry, an entry associated with at least one aperiodic SRS resource set, and at least one aperiodic SRS resource set not associated with a valid symbol type. The first control information further includes a second indication parameter for indicating the triggering of a first entry among the at least one entries, the aperiodic SRS resource set associated with the first entry being associated with the same valid symbol type, and the valid symbol type associated with the aperiodic SRS resource set being determined according to the first indication parameter.

[0147] In some embodiments, the second indication parameter is located in the SRS request field of the first control information. The first indication parameter is located in another field outside the SRS request field in the first control information, or the first indication parameter occupies one bit in the SRS request field.

[0148] In some embodiments, RRC signaling is sent, which includes second configuration information for configuring the valid symbol type associated with the non-periodic SRS resource set.

[0149] In some embodiments, if a periodic SRS resource set is not configured to be associated with a valid symbol type, then by default, the periodic SRS resource set is associated with a non-full-duplex symbol.

[0150] In some embodiments, RRC signaling is sent, which includes first configuration information for configuring at least one entry, an entry being associated with at least one aperiodic SRS resource set. The first control information further includes a third indication parameter for indicating the triggering of the first entry among the at least one entries, wherein the valid symbol type associated with the at least one aperiodic SRS resource set associated with the first entry is independently configured.

[0151] In some embodiments, RRC signaling is sent to configure the correspondence between the fourth indication parameter and the first indication parameter corresponding to each cell in at least one cell. The first control information includes the fourth indication parameter.

[0152] In some embodiments, RRC signaling is sent, which is used to configure the correspondence between the SRS request field and the first indication parameter and / or the second indication parameter corresponding to each cell in at least one cell. Here, the first control information includes the SRS request field.

[0153] For a more detailed description of S201-S202 above, as well as a more detailed description of each technical feature therein, and a description of the beneficial effects, please refer to the corresponding method embodiment section above, which will not be repeated here.

[0154] The foregoing primarily describes the solutions of the embodiments of this disclosure from a methodological perspective. The following also illustrates a signal transmission apparatus for executing the signal transmission methods in any of the above embodiments and their possible implementations. It is understood that, in order to implement the signal transmission method, the signal transmission apparatus includes hardware structures and / or software modules corresponding to the execution of various functions; those skilled in the art should readily recognize that, in conjunction with the algorithm steps of the various examples described in the embodiments of this disclosure, this disclosure can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed in hardware or by computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this disclosure.

[0155] This disclosure embodiment can divide the signal transmission device into functional modules according to the above method embodiment. For example, each function can be divided into a separate functional module, or two or more functions can be integrated into one functional module. The integrated module can be implemented in hardware or software. It should be noted that the module division in this disclosure embodiment is illustrative and only represents one logical functional division. In actual implementation, there may be other division methods. The following description uses the example of dividing each functional module according to each function.

[0156] Figure 7 is a block diagram of a signal transmission device according to some embodiments, applied to a first node. The signal transmission device 50 includes: a first communication module 51, a second communication module 52, and a processing module 53. Here, the first communication module 51 is used to receive first control information; the first control information is used to trigger an SRS resource set; the second communication module 52 is used to transmit an aperiodic SRS resource set based on the valid symbol type associated with the aperiodic SRS resource set, the valid symbol type including full-duplex symbols or non-full-duplex symbols.

[0157] In some embodiments, the first control information includes an SRS offset indication field, which is used to determine the number of valid time slot offsets. The number of valid time slot offsets is included in a list of valid time slot offsets. The number of valid time slot offsets is the number of valid time slots between the reference time slot and the time slot for transmitting the aperiodic SRS resource set. Here, the processing module 53 is used to determine the number of valid time slots according to the SRS offset indication field. The processing module 53 is also used to determine a first time slot for transmitting the aperiodic RSR resource set according to the number of valid time slots, the time slot position of the reference time slot, and the type of valid time slots. The type of valid time slot is determined according to the type of valid symbol associated with the aperiodic SRS resource set. The second communication module 52 is used to transmit the aperiodic SRS resource set on the first time slot.

[0158] In some embodiments, the first communication module 51 is further configured to receive Radio Resource Control (RRC) signaling, the RRC signaling including first configuration information. The first configuration information is used to configure at least one entry, where each entry is associated with at least one aperiodic SRS resource set, and the at least one aperiodic SRS resource set is not associated with a valid symbol type. The first control information further includes a second indication parameter, which is used to indicate the triggering of a first entry among the at least one entries. The aperiodic SRS resource set associated with the first entry is associated with the same valid symbol type, and the valid symbol type associated with the aperiodic SRS resource set is determined according to the first indication parameter.

[0159] In some embodiments, the first communication module 51 is configured to receive RRC signaling, the RRC signaling including second configuration information, the second configuration information being used to configure the valid symbol type associated with the aperiodic SRS resource set.

[0160] In some embodiments, the first communication module 51 is configured to receive RRC signaling, the RRC signaling including first configuration information, the first configuration information being used to configure at least one entry, an entry being associated with at least one aperiodic SRS resource set. The first control information further includes: a third indication parameter, the third indication parameter being used to indicate triggering the first entry among the at least one entries, the valid symbol type associated with the at least one aperiodic SRS resource set associated with the first entry being configured independently.

[0161] In some embodiments, the first communication module 51 is configured to receive RRC signaling, which is used to configure the correspondence between the fourth indication parameter and the first indication parameter corresponding to each cell in at least one cell. The first control information includes the fourth indication parameter.

[0162] In some embodiments, the first communication module 51 is configured to receive RRC signaling, which is used to configure the correspondence between the SRS request field and the first indication parameter and / or the second indication parameter corresponding to each cell in at least one cell. Here, the first control information includes the SRS request field.

[0163] For a more detailed description of the first communication module 51, the second communication module 52, and the processing module 53, as well as a more detailed description of their respective technical features and beneficial effects, please refer to the corresponding method embodiment section above, which will not be repeated here.

[0164] Figure 8 is a block diagram of another signal transmission device according to some embodiments, applied to a second node. The signal transmission device 60 includes a first communication module 61 and a second communication module 62. Here, the first communication module 61 is used to send first control information; the first control information is used to trigger an SRS resource set; the second communication module 62 is used to receive an aperiodic SRS resource set, wherein the valid symbol types associated with the aperiodic SRS resource set include full-duplex symbols or non-full-duplex symbols.

[0165] In some embodiments, the first communication module 61 is configured to send RRC signaling, which includes first configuration information. The first configuration information is used to configure at least one entry, where each entry is associated with at least one aperiodic SRS resource set, and the at least one aperiodic SRS resource set is not associated with a valid symbol type. The first control information further includes a second indication parameter, which is used to indicate the triggering of a first entry among the at least one entries. The aperiodic SRS resource set associated with the first entry is associated with the same valid symbol type, and the valid symbol type associated with the aperiodic SRS resource set is determined according to the first indication parameter.

[0166] In some embodiments, the first communication module 61 is used to send RRC signaling, the RRC signaling including second configuration information, the second configuration information being used to configure the valid symbol type associated with the aperiodic SRS resource set.

[0167] In some embodiments, the first communication module 61 is configured to send RRC signaling, the RRC signaling including first configuration information, the first configuration information being used to configure at least one entry, an entry being associated with at least one aperiodic SRS resource set. The first control information further includes: a third indication parameter, the third indication parameter being used to indicate triggering the first entry among the at least one entries, the valid symbol type associated with the at least one aperiodic SRS resource set associated with the first entry being configured independently.

[0168] In some embodiments, the first communication module 61 is configured to send RRC signaling, which configures the correspondence between the fourth indication parameter and the first indication parameter corresponding to each cell in at least one cell. The first control information includes the fourth indication parameter.

[0169] In some embodiments, the first communication module 61 is configured to send RRC signaling, which configures the correspondence between the SRS request field and the first indication parameter and / or the second indication parameter corresponding to each cell in at least one cell. Here, the first control information includes the SRS request field.

[0170] For a more detailed description of the first communication module 61 and the second communication module 62, as well as a more detailed description of their respective technical features and beneficial effects, please refer to the corresponding method embodiment section above, which will not be repeated here.

[0171] It should be noted that the modules in Figures 7 and 8 can also be called units; for example, a communication module can be called a communication unit. Furthermore, in the embodiments shown in Figures 7 and 8, the names of the modules may not be those shown in the figures; for example, a communication module can also be called a sending module or a receiving module. If the units or modules in Figures 7 and 8 are implemented as software functional modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solutions of the embodiments of this disclosure, in essence, or the part that contributes to related technologies, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) or processor to execute all or part of the steps of the methods of the various embodiments of this disclosure. Storage media for storing computer software products include: USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, optical disks, and other media capable of storing program code.

[0172] In the case of implementing the functions of the integrated modules described above in hardware, embodiments of this disclosure also provide a possible structure for a communication device used to execute the signal transmission method provided in embodiments of this disclosure. As shown in FIG9, the communication device 900 includes: a communication interface 903, a processor 902, and a bus 904. In some embodiments, the communication device may further include a memory 901.

[0173] Processor 902 may implement or execute various exemplary logic blocks, modules, and circuits described in conjunction with embodiments of this disclosure. Processor 902 may be a central processing unit, a general-purpose processor, a digital signal processor, an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It may implement or execute various exemplary logic blocks, modules, and circuits described in conjunction with embodiments of this disclosure. Processor 902 may also be a combination of computing functions, such as a combination of one or more microprocessors, a digital signal processor (DSP), and a microprocessor. Communication interface 903 is used to connect with other devices via a communication network. This communication network may be Ethernet, a wireless access network, a wireless local area network (WLAN), etc. The memory 901 may be a read-only memory (ROM) or other type of static storage device capable of storing static information and instructions, random access memory (RAM) or other type of dynamic storage device capable of storing information and instructions, or electrically erasable programmable read-only memory (EEPROM), disk storage media or other magnetic storage devices, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer, but is not limited thereto.

[0174] In some embodiments, the memory 901 may exist independently of the processor 902. The memory 901 may be connected to the processor 902 via a bus 904 and is used to store instructions or program code. When the processor 902 calls and executes the instructions or program code stored in the memory 901, it can implement the signal transmission method provided in the embodiments of this disclosure.

[0175] In some embodiments, the memory 901 may also be integrated with the processor 902. The bus 904 may be an extended industry standard architecture (EISA) bus, etc. The bus 904 can be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is used in Figure 9, but this does not indicate that there is only one bus or one type of bus.

[0176] Some embodiments of this disclosure provide a computer-readable storage medium (e.g., a non-transitory computer-readable storage medium) storing computer program instructions that, when executed on a computer, cause the computer to perform the signal transmission method as described in any of the above embodiments. In an exemplary embodiment, the computer may be the aforementioned signal transmission device, and this disclosure does not limit the specific form of the computer.

[0177] In some examples, the aforementioned computer-readable storage media may include, but are not limited to: magnetic storage devices (e.g., hard disks, floppy disks, or magnetic tapes), optical discs (e.g., compact disks (CDs), digital versatile disks (DVDs), etc.), smart cards, and flash memory devices (e.g., erasable programmable read-only memory (EPROMs), cards, sticks, or key drives, etc.). The various computer-readable storage media described in this disclosure may represent one or more devices and / or other machine-readable storage media for storing information. The term "machine-readable storage medium" may include, but is not limited to, wireless channels and various other media capable of storing, containing, and / or carrying instructions and / or data.

[0178] This disclosure provides a computer program product containing instructions that, when run on a computer, cause the computer to perform the signal transmission method described in any of the above embodiments.

[0179] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any changes or substitutions within the technical scope disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A signal transmission method, wherein, Applied to the first node, the method includes: Receive first control information; the first control information is used to trigger the aperiodic sounding reference signal (SRS) resource set. Based on the valid symbol type associated with the aperiodic SRS resource set, the aperiodic SRS resource set is transmitted, wherein the valid symbol type includes full-duplex symbols or non-full-duplex symbols.

2. The method according to claim 1, wherein, The first control information includes an SRS offset indication field, which is used to determine the number of valid time slot offsets. The number of valid time slot offsets is included in a list of valid time slot offsets. The number of valid time slot offsets is the number of valid time slots between the reference time slot and the time slot for transmitting the aperiodic SRS resource set. The transmission of the aperiodic SRS resource set based on the valid symbol type associated with the aperiodic SRS resource set includes: The number of effective time slots is determined based on the SRS offset indication field; The first time slot for transmitting the aperiodic RSR resource set is determined based on the number of valid time slots, the time slot position of the reference time slot, and the type of the valid time slot; the type of the valid time slot is determined based on the type of valid symbols associated with the aperiodic SRS resource set. The aperiodic SRS resource set is transmitted in the first time slot.

3. The method according to claim 2, wherein, The first control information includes a first indication parameter, which is used to indicate whether the effective time slot is a first type time slot or a second type time slot. The first type time slot is a time slot in which the time domain position of all SRS resources in the SRS resource set is within a non-full-duplex symbol; the second type time slot is a time slot in which the time domain position of all SRS resources in the SRS resource set is within a full-duplex symbol.

4. The method according to claim 2, wherein, The first control information includes a first indication parameter, which indicates the valid symbol type associated with the aperiodic SRS resource set.

5. The method according to claim 4, wherein, The first indication parameter is used to indicate whether the valid symbols associated with the aperiodic SRS resource set are full-duplex symbols or non-full-duplex symbols.

6. The method according to claim 2, wherein, The aperiodic SRS resource set associated with full-duplex symbols and the aperiodic SRS resource set associated with non-full-duplex symbols share the same list of effective slot offsets; or... The aperiodic SRS resource set associated with full-duplex symbols corresponds to a first effective time slot offset list, and the aperiodic SRS resource set associated with non-full-duplex symbols corresponds to a second effective time slot offset list. The first effective time slot offset list and the second effective time slot offset list are configured independently.

7. The method according to claim 4, wherein, The method further includes: Receive Radio Resource Control (RRC) signaling, the RRC signaling including first configuration information, the first configuration information being used to configure at least one entry, one of the entries being associated with at least one aperiodic SRS resource set, the at least one aperiodic SRS resource set not being associated with a valid symbol type; The first control information further includes: a second indication parameter, the second indication parameter being used to indicate triggering a first entry among the at least one entries, the first entry being associated with an aperiodic SRS resource set having the same valid symbol type, and the valid symbol type associated with the aperiodic SRS resource set being determined according to the first indication parameter.

8. The method according to claim 7, wherein, The second indication parameter is located in the SRS request field of the first control information; The first indication parameter is located in a field other than the SRS request field in the first control information, or the first indication parameter occupies one bit in the SRS request field.

9. The method according to claim 2, wherein, The method may include: Receive RRC signaling, the RRC signaling including second configuration information, the second configuration information being used to configure the valid symbol type associated with the aperiodic SRS resource set.

10. The method according to claim 2, wherein, If the aperiodic SRS resource set is not configured with a valid symbol type, then by default the aperiodic SRS resource set is associated with a non-full-duplex symbol.

11. The method according to claim 2, wherein, Receive RRC signaling, the RRC signaling including first configuration information, the first configuration information being used to configure at least one entry, one of the entries being associated with at least one aperiodic SRS resource set; The first control information further includes: a third indication parameter, which is used to indicate the triggering of the first entry among the at least one entries, wherein the valid symbol type associated with at least one aperiodic SRS resource set associated with the first entry is independently configured.

12. The method according to claim 5, wherein, The method further includes: Receive RRC signaling, the RRC signaling being used to configure the correspondence between the fourth indication parameter and the first indication parameter corresponding to each cell in at least one cell; The first control information includes the fourth indication parameter.

13. The method according to claim 5, wherein, The method further includes: Receive RRC signaling, the RRC signaling being used to configure the correspondence between the SRS request field and the first indication parameter and / or the second indication parameter corresponding to each cell in at least one cell; The first control information includes the SRS request domain.

14. A signal transmission method, wherein, Applied to the second node, the method includes: Send first control information; the first control information is used to trigger the SRS resource set; The aperiodic SRS resource set is received, wherein the valid symbol types associated with the aperiodic SRS resource set include full-duplex symbols or non-full-duplex symbols.

15. The method according to claim 14, wherein, The first control information includes an SRS offset indication field, which is used to determine the number of valid time slot offsets. The number of valid time slot offsets is included in the list of valid time slot offsets. The number of valid time slot offsets is the number of valid time slots between the reference time slot and the time slot for transmitting the aperiodic SRS resource set.

16. The method according to claim 15, wherein, The first control information includes a first indication parameter, which is used to indicate whether the effective time slot is a first type time slot or a second type time slot. The first type time slot is a time slot in which the time domain position of all SRS resources in the SRS resource set is within a non-full-duplex symbol; the second type time slot is a time slot in which the time domain position of all SRS resources in the SRS resource set is within a full-duplex symbol.

17. The method according to claim 15, wherein, The first control information includes a first indication parameter, which indicates the valid symbol type associated with the aperiodic SRS resource set.

18. The method according to claim 17, wherein, The first indication parameter is used to indicate whether the valid symbols associated with the aperiodic SRS resource set are full-duplex symbols or non-full-duplex symbols.

19. The method according to claim 15, wherein, The aperiodic SRS resource set associated with full-duplex symbols and the aperiodic SRS resource set associated with non-full-duplex symbols share the same list of effective slot offsets; or... The aperiodic SRS resource set associated with full-duplex symbols corresponds to a first effective time slot offset list, and the aperiodic SRS resource set associated with non-full-duplex symbols corresponds to a second effective time slot offset list. The first effective time slot offset list and the second effective time slot offset list are configured independently.

20. The method of claim 17, wherein, The method further includes: Sending RRC signaling, the RRC signaling including first configuration information, the first configuration information being used to configure at least one entry, one of the entries being associated with at least one aperiodic SRS resource set, the at least one aperiodic SRS resource set not being associated with a valid symbol type; The first control information further includes: a second indication parameter, the second indication parameter being used to indicate triggering a first entry among the at least one entries, the first entry being associated with an aperiodic SRS resource set having the same valid symbol type, and the valid symbol type associated with the aperiodic SRS resource set being determined according to the first indication parameter.

21. The method according to claim 20, wherein, The second indication parameter is located in the SRS request field of the first control information; The first indication parameter is located in a field other than the SRS request field in the first control information, or the first indication parameter occupies one bit in the SRS request field.

22. The method according to claim 15, wherein, The method may include: Send RRC signaling, the RRC signaling including second configuration information, the second configuration information being used to configure the valid symbol type associated with the aperiodic SRS resource set.

23. The method according to claim 15, wherein, If the aperiodic SRS resource set is not configured with a valid symbol type, then by default the aperiodic SRS resource set is associated with a non-full-duplex symbol.

24. The method according to claim 15, wherein, Sending RRC signaling, the RRC signaling including first configuration information, the first configuration information being used to configure at least one entry, one of the entries being associated with at least one aperiodic SRS resource set; The first control information further includes: a third indication parameter, which is used to indicate the triggering of the first entry among the at least one entries, wherein the valid symbol type associated with at least one aperiodic SRS resource set associated with the first entry is independently configured.

25. The method according to claim 18, wherein, The method further includes: Send RRC signaling, the RRC signaling being used to configure the correspondence between the fourth indication parameter and the first indication parameter corresponding to each cell in at least one cell; The first control information includes the fourth indication parameter.

26. The method according to claim 18, wherein, The method further includes: Sending RRC signaling, the RRC signaling being used to configure the correspondence between the SRS request field and the first indication parameter and / or the second indication parameter corresponding to each cell in at least one cell; The first control information includes the SRS request domain.

27. A communication device, wherein, include: Memory and processor; Memory and processor are coupled; The memory is used to store instructions that can be executed by the processor; When the processor executes the instructions, it performs the method as described in any one of claims 1 to 26.

28. A computer-readable storage medium, wherein, The computer-readable storage medium stores computer instructions that, when executed on a communication device, cause the communication device to perform the method as described in any one of claims 1 to 26.

29. A computer program product, wherein, When the computer program product is executed, it implements the method as described in any one of claims 1 to 26.

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