Signal transmission method and apparatus, and storage medium

Abstract

Provided are a signal transmission method and apparatus, and a storage medium. The method comprises: a first node sends first information to a second node, wherein the first information is used for determining the symbol attribute corresponding to a symbol.

Description

Signal transmission method and device, and storage medium

[0001] This disclosure claims priority to Chinese patent application No. 202311594045.1, filed on November 24, 2023, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present disclosure relates to the field of communication technologies, and in particular to a signal transmission method, device, and storage medium. Background Art

[0003] To improve uplink (UL) coverage, UL latency, and UL capacity in time division duplexing (TDD) systems, sub-band full duplex (SBFD) technology has been proposed. This new duplexing technology divides a single carrier's frequency band into uplink and downlink (DL) sub-bands, allowing base stations to utilize both uplink and downlink resources in more time slots. This approach achieves latency advantages in TDD systems similar to those of frequency division duplexing (FDD).

[0004] Summary of the Invention

[0005] In one aspect, a signal transmission method is provided. The signal transmission method includes:

[0006] The first node sends first information to the second node, where the first information is used to determine a symbol attribute corresponding to a symbol.

[0007] In another aspect, a signal transmission method is provided. The signal transmission method includes:

[0008] The second node receives first information from the first node, where the first information is used to determine a symbol attribute corresponding to the symbol.

[0009] In another aspect, a signal transmission device is provided. The signal transmission device includes:

[0010] The communication module is configured to send first information to the second node, where the first information is used to determine a symbol attribute corresponding to the symbol.

[0011] In another aspect, a signal transmission device is provided. The signal transmission device includes:

[0012] The communication module is configured to receive first information from a first node, where the first information is used to determine a symbol attribute corresponding to a symbol.

[0013] In yet another aspect, a communication device is provided, comprising: a memory and a processor; the memory and the processor are coupled; the memory is configured to store computer program instructions executable by the processor; and the processor implements the signal transmission method described in any of the above aspects when executing the computer program instructions.

[0014] In another aspect, a computer-readable storage medium is provided, wherein computer program instructions are stored on the computer-readable storage medium, and when the computer program instructions are executed on a computer (eg, a communication device or a signal transmission device), the signal transmission method described in any one of the above aspects is implemented.

[0015] In yet another aspect, a computer program product is provided, comprising computer program instructions, which implement the signal transmission method described in any one of the above aspects when executed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] FIG1 is a time-frequency resource diagram according to some embodiments of the present disclosure.

[0017] FIG2 is another time-frequency resource diagram according to some embodiments of the present disclosure.

[0018] FIG3 is another time-frequency resource diagram according to some embodiments of the present disclosure.

[0019] FIG4 is another time-frequency resource diagram according to some embodiments of the present disclosure.

[0020] FIG5 is a schematic diagram of the architecture of a communication system according to some embodiments of the present disclosure.

[0021] FIG6 is a flowchart of a signal transmission method according to some embodiments of the present disclosure.

[0022] FIG7 is a schematic diagram of a signal transmission device according to some embodiments of the present disclosure.

[0023] FIG8 is a schematic diagram of another signal transmission device according to some embodiments of the present disclosure.

[0024] FIG9 is a schematic structural diagram of a communication device according to some embodiments of the present disclosure. DETAILED DESCRIPTION

[0025] To enable those skilled in the art to better understand the technical solutions of the embodiments of the present disclosure, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by those of ordinary skill in the art without making any creative efforts shall fall within the scope of protection of the present disclosure.

[0026] In the description of the present disclosure, unless otherwise specified, " / " means "or", for example, A / B can mean A or B. "And / or" in this article is merely a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can mean: only A, only B, and A and B. In addition, "at least one" means one or more, and "a plurality" means two or more. Expressions such as "first" and "second" do not limit the quantity and execution order, and expressions such as "first" and "second" do not necessarily limit them to be different.

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

[0028] To improve UL coverage, UL latency, and UL capacity in TDD systems, full-duplex subband technology has been proposed. Within DL symbols / time slots, UL subbands and DL subbands are configured. For example, UL subbands and DL subbands are allocated within the frequency domain of the DL bandwidth part (BWP) and the UL BWP. These UL subbands and DL subbands are also referred to as SBFD subbands. This means that an SBFD subband is allocated within a DL symbol / slot. This SBFD subband generally includes both a DL subband and a UL subband.

[0029] For example, in a 100 MHz TDD carrier, 20 consecutive RBs are configured as UL subbands in the DL BWP within the DL symbols / slot. The remaining frequency domain resources of the DL BWP are DL subbands (the frequency domain gap between the UL subband and the DL subband may not be configured). Alternatively, a DL subband in the DL BWP is also configured within the DL symbols / slot. In this way, within the DL symbols / slot, the UL subband can be used for UL transmission, and the DL subband can be used for DL ​​transmission.

[0030] For example, as shown in FIG1 , a UL subband and a DL subband are configured in DL symbols / slots. This structure is generally referred to as a “DUD” (frequency-domain-based structure).

[0031] As another example, as shown in FIG2 , a UL subband and a DL subband are configured in DL symbols / slots. This structure is generally referred to as “DU” / “UD” (based on a frequency domain structure).

[0032] A symbol configured with an SBFD subband is called an SBFD symbol. A slot containing an SBFD symbol is called an SBFD slot. A symbol not configured with an SBFD subband is called a non-SBFD symbol (i.e., a regular uplink (DL), downlink (UL), or Flexible F symbol). A slot not containing an SBFD symbol is called a non-SBFD slot.

[0033] For legacy terminal devices (e.g., user equipment (UE)), or UEs not configured with SBFD subbands, these UEs are unaware of the existence of SBFD subbands (including both DL and UL subbands). For such UEs, if a DL transmission is configured or scheduled in an SBFD symbol, how the DL transmission is performed remains an open question, especially when the resources of the DL transmission include some or all of the resources in the UL subband, that is, when the resources of the DL transmission overlap with the UL subband (including in the time domain and / or frequency domain).

[0034] In order to further improve system efficiency and spectrum efficiency, the present disclosure proposes a co-frequency co-time full duplex (CCFD) technology.

[0035] CCFD technology uses the same time and frequency to transmit and receive wireless signals simultaneously, doubling the spectrum efficiency of the wireless communication link.

[0036] Configuration of CCFD resources: In a carrier, the base station configures an RB set based on continuous RBs in the frequency domain for CCFD operation, and configures some slots or symbols based on symbols or slots in the time domain for CCFD operation. In this way, some time-frequency resources for CCFD operation can be obtained (denoted as resource A). Resource A is also called CCFD subband, which can be used for DL ​​transmission and UL reception. At least from the base station side, resource A can be used for simultaneous full-duplex transmission on the same frequency. That is, the base station can use the same time and the same frequency to send DL signals and receive UL signals in resource A at the same time. The UE side can only support time-division DL transmission and UL transmission.

[0037] Exemplarily, as shown in FIG3 , a symbol / slot configured with resource A is called a CCFD symbol / slot, and a symbol / slot not configured with resource A is called a non-CCFD symbol / slot (eg, a conventional DL, UL or F symbol / slot).

[0038] For older UEs, or UEs not configured with CCFD subbands, these UEs are unaware of the existence of CCFD subbands. For such UEs, if a DL transmission is configured or scheduled in CCFD symbols, how the DL transmission is performed remains an open question, especially when the resources of the DL transmission include some or all of the resources in the CCFD subband, that is, when the resources of the DL transmission overlap with the CCFD subband (including in the time domain and / or frequency domain).

[0039] Currently, existing technologies prevent UEs configured with SBFD subbands from scheduling or configuring their DL transmissions in the UL subbands of SBFD symbols. Specifically, if the resources for the UE's DL transmission overlap with the UL subband, the UE considers the overlapping resources invalid for the DL transmission, effectively preventing the DL transmission from using the overlapping resources. This means that DL transmissions cannot use the UL subband's resources. However, this limitation can reduce system efficiency or increase base station scheduling complexity.

[0040] Furthermore, in practice, there are cases where the base station schedules DL transmission resources that include UL subband resources, meaning that the DL transmission resources overlap with the UL subband. For example, this DL transmission has a higher priority or corresponds to a low-latency service type (e.g., URLLC (Ultra-reliable and Low Latency Communications)).

[0041] For example, as shown in Figure 4, the base station schedules / configures a DL transmission for the UE in the SBFD symbol (DL transmission includes DG PDSCH, SPS PDSCH, PDCCH, downlink reference signal, etc.). The resources of this DL transmission overlap with the resources of the UL subband, and this DL transmission is a DL transmission with a higher priority. The base station schedules / configures UL transmission in the UL subband, but some resources of this UL transmission exceed the time domain range of the UL subband. In this case, there is a conflict between the transmission direction supported by the transmission resources and the transmission direction of the signal to be transmitted. How the base station and UE determine whether to perform this DL transmission or UL transmission is a technical problem to be solved.

[0042] In view of this, the present disclosure provides a signal transmission method, which includes a first node sending first information to a second node, the first information being used to determine a symbol attribute corresponding to a symbol, so as to resolve a conflict between a transmission direction supported by a transmission resource on the symbol and a transmission direction of a signal to be transmitted, so that the first node and the second node can determine whether to perform DL transmission or UL transmission.

[0043] It is understood that the technical solutions provided by the embodiments of the present disclosure are applicable not only to transmission / reception based on SBFD subbands, but also to transmission / reception based on CCFD subbands. For example, this can be achieved by replacing SBFD symbols / slots with CCFD symbols / slots, or by replacing non-SBFD symbols / slots with non-CCFD symbols / slots. Since CCFD subbands support both DL and UL transmissions, it is also possible to replace UL or DL ​​subbands with CCFD subbands.

[0044] The information transmission method provided by the embodiments of the present disclosure can be applied to systems of various communication formats. For example, the information transmission method provided by the embodiments of the present disclosure can be applied to systems including, but not limited to, Long Term Evolution (LTE) systems, various versions based on LTE evolution, 5G systems, and other communication systems. In addition, the information transmission method provided by the embodiments of the present disclosure can also be applied to future-oriented communication systems (e.g., 6G communication systems).

[0045] The network architecture of the mobile communication network (including but not limited to 3G, 4G, 5G and future mobile communication networks) in the embodiments of the present disclosure may include at least a first communication node and a second communication node. It should be understood that in this example, the first communication node is a network-side device (for example, including but not limited to a base station), and the second communication node may be a terminal-side device (for example, including but not limited to a terminal). The first communication node and the second communication node may be referred to as the first node and the second node, respectively.

[0046] For example, taking the first communication node as a base station and the second communication node as a terminal, as shown in FIG5 , an embodiment of the present disclosure provides a communication system including a terminal 10 and a base station 20. The number of terminals 10 and base stations 20 may be one or more, and the number is not limited here.

[0047] In some embodiments, base station 20 provides wireless access services to terminal 10. A base station 20 provides at least one service coverage area (also referred to as a cell). Terminal 10 entering this area can communicate with base station 20 via wireless signals to receive the wireless access services provided by base station 20.

[0048] In some embodiments, the base station can be a base station or an evolved base station (eNB or eNodeB) in long term evolution (LTE), long term evolution advanced (LTEA), a base station device in a 5G network, or a base station in a future communication system, etc. The base station can include various macro base stations, micro base stations, home base stations, wireless remote stations, reconfigurable intelligent surfaces (RISs), routers, relays, TRPs, wireless fidelity (WIFI) devices and other network side devices.

[0049] In some embodiments, the terminal may be a device with wireless transceiver capabilities. The terminal may be a mobile phone, a tablet computer, a computer with wireless transceiver capabilities, a virtual reality (VR) terminal, an augmented reality (AR) terminal, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, etc. The embodiments of the present disclosure do not limit the application scenarios. The terminal may sometimes also be referred to as a user, user equipment (UE), access terminal, UE unit, UE station, mobile station, mobile station, remote station, remote terminal, mobile device, UE terminal, wireless communication equipment, UE agent or UE device, etc., which is not limited in the embodiments of the present disclosure.

[0050] It should be noted that Figure 5 is only an exemplary framework diagram. The number of devices included in Figure 5 and the names of each device are not limited. In addition to the devices shown in Figure 5, the communication system may also include other devices, such as core network devices.

[0051] The application scenarios of the embodiments of the present disclosure are not limited. The system architecture and business scenarios described in the embodiments of the present disclosure are intended to more clearly illustrate the technical solutions of the embodiments of the present disclosure and do not constitute a limitation on the technical solutions provided by the embodiments of the present disclosure. It is known to those skilled in the art that with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided by the embodiments of the present disclosure are also applicable to similar technical problems.

[0052] The present disclosure provides a signal transmission method. As shown in FIG6 , the method includes the following S101 .

[0053] S101: A first node sends first information to a second node; correspondingly, the second node receives the first information from the first node. The first information is used to determine a symbol attribute corresponding to a symbol.

[0054] In some embodiments, the first node or the second node receives or transmits a signal to be transmitted on a first transmission resource containing the symbol based on a symbol attribute corresponding to the symbol determined by the first information, wherein the first transmission resource overlaps with a transmission resource of the signal to be transmitted between the first node and the second node, and a transmission direction supported by the first transmission resource conflicts with a transmission direction of the signal to be transmitted. The transmission resource of the signal to be transmitted may be a resource for uplink transmission or a resource for downlink transmission.

[0055] In some embodiments, the first node or the second node receives or transmits a signal to be transmitted based on the symbol attributes corresponding to the symbols determined by the first information, wherein the transmission direction of the signal to be transmitted does not conflict with the symbol attributes corresponding to the symbols determined based on the first information. In other words, the first node configures the first information to determine the symbol attributes of some symbols and schedules or configures the signal to be transmitted in the symbols for which the symbol attributes have been determined. In this case, the transmission direction (uplink or downlink) of the signal to be transmitted should not conflict with the symbol attributes of the symbols.

[0056] For example, the first node configures the first information to determine that the symbol attributes of some symbols are DL symbols (for example, SBFD symbols are changed to DL symbols, that is, the SBFD subbands (including DL subbands and UL subbands) in these SBFD symbols are cancelled, and these symbols return to normal DL symbols). The first node can schedule the signals to be transmitted with a transmission direction of downlink in these symbols, including using the frequency domain resources originally configured with UL subbands in these symbols. Obviously, the first node cannot schedule the signals to be transmitted with a transmission direction of uplink in these symbols, including not being able to use the frequency domain resources originally configured with UL subbands in these symbols. This is because the re-determined symbol attributes of these symbols conflict with the transmission direction of the signals to be transmitted with an uplink transmission direction.

[0057] For another example, the first node configures the first information to determine that the symbol attributes of some symbols are F symbols (for example, SBFD symbols are changed to F symbols, that is, the SBFD subbands (including DL subbands and UL subbands) in these SBFD symbols are cancelled, and these symbols return to normal F symbols). The first node can schedule the signals to be transmitted with a transmission direction of downlink in these symbols, including using the frequency domain resources originally configured with UL subbands in these symbols. Obviously, the first node can also schedule the signals to be transmitted with an uplink transmission direction in these symbols, including using the frequency domain resources originally configured with UL subbands in these symbols. This is because F symbols can support both UL transmission and DL transmission, so the symbol attributes of these symbols do not conflict with the transmission direction of the signals to be transmitted. Correspondingly, the second node receives the first information, determines the symbol attributes of these symbols based on the first information, and performs transmission of the signals to be transmitted based on the symbol attributes of these symbols (after modification). For example, if the transmission direction of the signal to be transmitted does not conflict with the re-determined symbol attributes of these symbols, the signal to be transmitted is executed.

[0058] In some embodiments, the signal to be transmitted for reception or transmission on the symbol includes at least one of the following:

[0059] Physical downlink control channel (PDCCH);

[0060] Physical downlink shared channel (PDSCH);

[0061] Synchronization signal and physical broadcast channel (PBCH) block (SSB);

[0062] Physical random access channel (PRACH);

[0063] Physical uplink control channel (PUCCH);

[0064] Downlink reference signal (DLRS);

[0065] Physical uplink shared channel (PUSCH);

[0066] Uplink reference signal (uplink reference signal).

[0067] It is understandable that the signal to be transmitted that the symbol is used to receive or transmit includes not only the several types of signals listed above, but also other types of signals, and the present disclosure does not limit this.

[0068] In some embodiments, the symbol attributes of the symbol include a first type of symbol (denoted as an SBFD symbol) and a second type of symbol (denoted as a non-SBFD symbol); the first type of symbol is a symbol configured with a full-duplex subband, and the second type of symbol is a symbol not configured with a full-duplex subband; the first type of symbol includes at least one of the following: a first type of downlink symbol, a first type of flexible symbol; the second type of symbol includes at least one of the following: a second type of downlink symbol, a second type of flexible symbol.

[0069] In some embodiments, when the transmission direction of the signal to be transmitted is an uplink direction, the first transmission resource includes at least one of the following: a downlink subband on a first type of symbol; a guard interval on a first type of symbol; and a second type of symbol.

[0070] For example, continuing to refer to Figure 4, the transmission direction of the signal to be transmitted between the base station and the terminal is the uplink direction, that is, UL transmission (the UL transmission includes PRACH transmission, and also includes PRACH transmission triggered by PDCCH instruction (order). The UL transmission is scheduled or configured in the UL subband in the SBFD symbol, and the downlink control information (downlink control information, DCI) corresponding to the UL transmission in the PDCCH is C (Cell)-RNTI (Radio Network Temporary Identifier, Cell Radio Network Temporary Identifier), CS (Configured Scheduling, Configuration Scheduling)-RNTI, TC (Temporary Cell, Temporary Cell)-RNTI, MCS (Modulcation Coding Scheme, Modulation and Coding Scheme)-C-RNTI, CG-SDT (Configured Grant-Small Data Transmission, Configuration Authorized Small Data Transmission)-CS-RNTI or RA (Random Access, Random Access)-RNTI scrambled. In the corresponding SBFD slot, part of the UL transmission resources exceeds the time domain range of the UL subband, that is, part of the UL transmission resources overlap with the downlink subband / guard interval in the SBFD symbol, and the UL transmission direction conflicts with the transmission direction supported by the downlink subband / guard interval in the SBFD symbol.

[0071] In some embodiments, when the transmission direction of the signal to be transmitted is a downlink direction, the first transmission resource includes at least one of the following:

[0072] Uplink subband on first type symbols;

[0073] Guard interval on symbols of the first type.

[0074] Exemplarily, continuing to refer to Figure 4, the signal to be transmitted between the base station and the terminal is a PDSCH, and the PDSCH is scheduled / activated by the DCI in the PDCCH, and the DCI is scrambled by C-RNTI, MCS-C-RNTI, CS-RNTI, G-RNTI, G-CS (Group Configured Scheduling)-RNTI or MCCH (Multibroadcast Control Channel)-RNTI. The first transmission resource is an uplink subband on the symbol configured with a full-duplex subband; the transmission resource of the PDSCH overlaps with the resource of the uplink subband on the symbol configured with a full-duplex subband (including overlap in the time domain and / or frequency domain), and the transmission direction of the PDSCH conflicts with the transmission direction supported by the uplink subband on the symbol configured with a full-duplex subband.

[0075] In some embodiments, the first information is used to determine a symbol attribute corresponding to the symbol, including any of the following:

[0076] Determine the symbolic properties of a particular symbol;

[0077] Determine if the symbolic properties of a particular symbol have changed;

[0078] determining that a specific first-type symbol is modified into a second-type symbol;

[0079] Determine whether to increase or decrease k first type symbols, where k is a positive integer.

[0080] In some embodiments, determining to increase or decrease k first-type symbols includes at least one of the following:

[0081] Determine to add k first-type symbols from the end of the existing first-type symbols;

[0082] Determine to add k first-type symbols from the beginning of the existing first-type symbols;

[0083] Determine to reduce k first type symbols from the end of the existing first type symbols;

[0084] Determine k first-type symbols to be reduced from the beginning of the existing first-type symbols.

[0085] In some embodiments, the first information includes at least one of the following parameters: a first parameter, a second parameter, a third parameter, a fourth parameter, a fifth parameter, a sixth parameter, and a seventh parameter; wherein the first parameter is used to determine the time slot, the TDD frame structure period, or the symbol configuration period of the full-duplex subband; the second parameter is used to determine the position of a specific symbol; the third parameter is used to determine the symbol attribute of a specific symbol; the fourth parameter is used to indicate the number of first-type symbols to be added; the fifth parameter is used to indicate the increase method; the sixth parameter is used to indicate the number of first-type symbols to be reduced; and the seventh parameter is used to indicate the decrease method.

[0086] In some embodiments, the validity of the determined symbol attribute satisfies any of the following:

[0087] The validity of the determined symbolic attributes lasts until they are instructed to change again;

[0088] The determined symbol attributes are only valid for this instruction;

[0089] The determined symbol attributes are valid within the current TDD frame period;

[0090] The determined symbol attributes are valid within the current first type symbol configuration period;

[0091] The first information of the determined symbol attribute is also valid within the validity period indicated.

[0092] In some embodiments, determining the symbol attribute corresponding to the symbol includes at least one of the following: modifying a first-type symbol to a second-type symbol; or modifying a second-type symbol to a first-type symbol. This can avoid conflicts between the transmission direction supported by the transmission resource and the transmission direction of the signal to be transmitted.

[0093] For example, if a base station transmits a DL transmission within a resource for which the DL transmission is scheduled or configured, but the resource for the DL transmission overlaps a UL subband, the base station will modify the SBFD symbols in the symbol containing the DL transmission to DL symbols in a subband not configured for full-duplexing before transmitting the DL transmission. This completes the DL transmission. In this way, the resource for the DL transmission no longer overlaps with the UL subband because the SBFD symbols in the overlapping resource have been modified to DL symbols in a subband not configured for full-duplexing. The modified symbols should include the SBFD symbols in the resource for the DL transmission.

[0094] In another example, if the base station intends to transmit the above-mentioned UL transmission in the resources for which the UL transmission is scheduled or configured, but the resources for the UL transmission overlap with DL symbols for which no SBFD subband is configured, the base station will modify the DL symbols for which no SBFD subband is configured to DL symbols for which SBFD subband is configured (i.e., SBFD symbols) before transmitting the UL transmission, thereby ensuring that the resources for the UL transmission fall within the UL subband within the SBFD symbols. In this way, the UL transmission can be performed in the corresponding resources. The modified symbols should include the symbols for which the resources for the UL transmission are located.

[0095] In some embodiments, modifying the first type symbol to the second type symbol is subject to at least one of the following constraints:

[0096] The first type of downlink symbols are only allowed to be modified into the second type of downlink symbols;

[0097] The first type flexible symbol is only allowed to be modified into the second type downlink symbol, or the first type flexible symbol is only allowed to be modified into the second type flexible symbol;

[0098] The modified second type symbols in the same time slot are continuous;

[0099] In the same time slot, TDD frame structure period or full-duplex subband symbol configuration period, the modified second type downlink symbol is continuous with the second type downlink symbol or second type flexible symbol configured by the uplink and downlink common configuration signaling;

[0100] In the same time slot, TDD frame structure period or full-duplex subband symbol configuration period, the modified second type flexible symbol is continuous with the second type downlink symbol or second type flexible symbol configured by the uplink and downlink common configuration signaling.

[0101] In some embodiments, modifying the second type symbol to the first type symbol is subject to at least one of the following constraints:

[0102] The second type of downlink symbols are only allowed to be modified into the first type of downlink symbols;

[0103] The second type of flexible symbols can only be modified into the first type of flexible symbols;

[0104] The modified first type symbols in the same time slot are continuous;

[0105] The modified first type downlink symbol is continuous with the original first type downlink symbol in the same time slot;

[0106] The modified first type flexible symbol is continuous with the original first type flexible symbol in the same time slot;

[0107] The number of transition points added within the same time slot, TDD frame structure period, or symbol configuration period of a full-duplex subband does not exceed a preset number, and the transition points include: a transition point from a first type of symbol to a second type of symbol, and a transition point from a second type of symbol to a first type of symbol.

[0108] In some embodiments, the constraints are determined by one of the following:

[0109] The first node determines and notifies the second node;

[0110] The second node determines and notifies the first node;

[0111] Determined by negotiation between the first node and the second node;

[0112] is predefined between the first node and the second node.

[0113] In some embodiments, the first information is a downlink control information format.

[0114] In some embodiments, the first information is radio resource control signaling.

[0115] In some embodiments, the first information is transmitted via a common physical control channel or via a physical control channel dedicated to the terminal device.

[0116] In some embodiments, when the first information is transmitted through a common physical control channel, the first information in the common physical control channel is scrambled by a predefined RNTI, wherein the predefined RNTI indicates that the function of the first information is to determine symbol attributes.

[0117] In some embodiments, when the first information is transmitted through a physical control channel dedicated to the terminal device, the first information includes an eighth parameter. By setting the eighth parameter to a first value, it is indicated that the function of the first information is to determine symbol attributes. By setting the eighth parameter to a second value, it is indicated that the function of the first information is to schedule uplink / downlink data.

[0118] In some embodiments, the first information is a DCI format for scheduling a PDSCH, and the DCI format is scrambled by the C-RNTI, and the eighth parameter is the first value, then the DCI format is not used to schedule a PDSCH or is used to schedule a PDSCH without downlink data; or,

[0119] The first information is a DCI format for scheduling a PUSCH, and the DCI format is scrambled by the C-RNTI, and the eighth parameter is the first value, then the DCI format is not used to schedule a PUSCH or is used to schedule a PUSCH without uplink data.

[0120] In some embodiments, the first node sends second information to the second node; correspondingly, the second node receives the second information sent by the first node. The second information is used to indicate that the second node is allowed to modify the symbol attribute.

[0121] In some embodiments, the first node receives third information sent by the second node, and correspondingly, the second node sends the third information to the first node, where the third information indicates that the second node supports modifying the symbol attribute.

[0122] Based on this, by determining the symbol attribute corresponding to the symbol, the conflict between the transmission direction supported by the transmission resource on the symbol and the transmission direction of the signal to be transmitted is resolved, and then the base station and UE can determine whether to perform DL transmission or UL transmission.

[0123] In order to explain the technical solution of the present disclosure in more detail, some implementation methods are provided below.

[0124] The following lists several possible situations in which the first transmission resource overlaps with the transmission resource of the signal to be transmitted between the first node and the second node, and the transmission direction supported by the first transmission resource conflicts with the transmission direction of the signal to be transmitted. The present disclosure includes but is not limited to the following situations.

[0125] Case 1: If the UE's DL transmission signal is a PDSCH, and the PDSCH is scheduled / activated by a DCI in the PDCCH, and the DCI is scrambled by a C-RNTI, MCS-C-RNTI, CS-RNTI, G-RNTI, G-CS-RNTI, or MCCH-RNTI, and if the resources of the PDSCH overlap with the resources of the UL subband in the SBFD symbol (including overlap in the time domain and / or frequency domain), and the base station determines that the PDSCH is transmitted in the resources of the PDSCH (i.e., the overlapping resources are also used for the PDSCH), the base station and the UE proceed as follows. Note: This DL transmission can be for a legacy UE, for a new UE not configured with an SBFD subband, or for a UE configured with an SBFD subband. In some embodiments, the DL transmission here is considered by the base station and the UE to have a higher physical layer priority.

[0126] Case 2: If the UE's UL transmission is scheduled or configured in a UL subband within an SBFD symbol, and the DCI in the PDCCH corresponding to the UL transmission is scrambled by C-RNTI, CS-RNTI, TC-RNTI, MCS-C-RNTI, CG-SDT-CS-RNTI, or RA-RNTI (the UL transmission includes PRACH transmission and PRACH transmission triggered by a PDCCH order), and part of the resources of the UL transmission exceeds the time domain (symbol) range of the UL subband in the corresponding SBFD slot (i.e., part of the resources of the UL transmission overlaps with the DL subband / guard interval (gap) in the SBFD subband), the base station and the UE agree to handle the UL transmission in the following manner. Note: This UL transmission is for a new UE configured with an SBFD subband. In some embodiments, the UL transmission here is considered by the base station and the UE to have a higher priority transmission.

[0127] Case 3: If the UE's UL transmission is scheduled or configured in a UL subband in an SBFD symbol, and the DCI in the PDCCH corresponding to the UL transmission is scrambled by C-RNTI, CS-RNTI, TC-RNTI, MCS-C-RNTI, CG-SDT-CS-RNTI, or RA-RNTI (the UL transmission includes PRACH transmission and PRACH transmission triggered by a PDCCH order), and the resources of the UL transmission are within the time domain (symbol) range of the UL subband, but the UL transmission overlaps with the DL transmission time domain in the DL subband in the SBFD symbol, then the base station and the UE agree to handle the UL transmission in the following manner. Note: This UL transmission is for a new UE configured with an SBFD subband. In some embodiments, the UL transmission here is considered by the base station and the UE to have a higher priority transmission.

[0128] Case 4: If the UE's DL transmission signal is a PDSCH, and the PDSCH is scheduled / activated by a DCI in the PDCCH, and the DCI is scrambled by an SI-RNTI, RA-RNTI, MSGB-RNTI, P-RNTI, or TC-RNTI, and if the resources of the PDSCH overlap with the resources of the UL subband in the SBFD symbol (including overlap in the time domain and / or frequency domain), and the base station determines that the PDSCH is transmitted within the resources of the PDSCH (i.e., the overlapping resources are also used for the PDSCH), the base station and the UE proceed as follows. Note: The PDSCHs in this case are all DL transmission signals with higher priority in the system, even higher than transmission signals with higher physical priority. Note: This DL transmission can be for legacy UEs, for new UEs not configured with SBFD subbands, or for UEs configured with SBFD subbands. In some embodiments, this DL transmission is considered by the base station and the UE to have higher priority.

[0129] Case 5: If the UE's DL transmission signal is a PDCCH, and the DCI in the PDCCH is scrambled by C-RNTI, MCS-C-RNTI, CS-RNTI, G-RNTI, G-CS-RNTI, or MCCH-RNTI, and if the resources of the PDCCH overlap with the resources of the UL subband in the SBFD symbol (including overlap in the time domain and / or frequency domain), and the base station determines that the PDCCH is transmitted within the resources of the PDCCH (i.e., the overlapping resources are also used for the PDCCH), the base station and the UE proceed as follows. Note: This DL transmission can be for a legacy UE, for a new UE not configured with an SBFD subband, or for a UE configured with an SBFD subband. In some embodiments, this DL transmission is considered by the base station and the UE to have a higher physical layer priority.

[0130] Case 6: If the UE's DL transmission signal is a PDCCH, and the DCI in the PDCCH is scrambled by SI-RNTI, RA-RNTI, MSGB-RNTI, P-RNTI, or TC-RNTI, and if the resources of the PDCCH overlap with the resources of the UL subband in the SBFD symbol (including overlap in the time domain and / or frequency domain), and the base station determines that the PDCCH is transmitted in the resources of the PDCCH (i.e., the overlapping resources are also used for the PDCCH), the base station and the UE proceed as follows. Note: This DL transmission can be for a legacy UE, for a new UE not configured with an SBFD subband, or for a UE configured with an SBFD subband. In some embodiments, the DL transmission here is considered by the base station and the UE to have a higher physical layer priority.

[0131] Case 7: Alternatively, if the UE's DL transmission signal is a downlink reference signal, and if the resources of the downlink reference signal overlap with the resources of the UL subband in the SBFD symbol (including overlap in the time domain and / or frequency domain), and the base station determines that the downlink reference signal is transmitted within the resources of the downlink reference signal (i.e., the overlapping resources are also used for the downlink reference signal), the base station and the UE proceed as follows. Note: The DL transmission can be for a legacy UE, for a new UE not configured with an SBFD subband, or for a UE configured with an SBFD subband. In some embodiments, the DL transmission here is considered by the base station and the UE to have a higher physical layer priority.

[0132] The base station and the UE agree to process the above-mentioned DL transmission or UL transmission according to at least one of the following aspects:

[0133] Aspect 1: Specific method of notifying UE.

[0134] Option 1-1, the base station modifies the DL / F symbol configured with the SBFD subband to the DL / F symbol not configured with the SBFD subband by sending DCI (first information) to the terminal (that is, canceling the SBFD subband configuration in the DL / F symbol to obtain a DL / F symbol without the SBFD subband, that is, changing the SBFD symbol to a non-SBFD symbol). Alternatively, the base station can modify the DL / F symbol not configured with the SBFD subband to the DL / F symbol configured with the SBFD subband through DCI. The DCI can be in the public PDCCH or in the UE-specific PDCCH. The above operation can be for the public (cell-level) SBFD subband (or SBFD symbol) configuration or for the UE-level (UE-specific) SBFD subband (or SBFD symbol) configuration. The resources of the UE-level SBFD subband should be located within the resources of the cell-level SBFD subband. The symbol position of the UE-level SBFD subband is consistent with the symbol position of the common SBFD subband in the time domain (or the symbol position of the UE-level SBFD subband is a subset of the symbol position of the common SBFD subband). If the symbol position of the UE-level SBFD subband is consistent with the symbol position of the common SBFD subband in the time domain, and the symbol attributes of the symbols corresponding to the common SBFD subband are modified, then the same symbols corresponding to the UE-level SBFD subband are also modified by default. However, if the symbol attributes of the symbols corresponding to the UE-level SBFD subband are modified, the same symbols corresponding to the common SBFD subband may not be modified.

[0135] For example, if a base station intends to transmit the aforementioned DL transmission within the resources scheduled or configured for the DL transmission, but the resources for the DL transmission overlap with the UL subband in the configured SBFD subband within a DL symbol (or the resources for the DL transmission include the resources for the UL subband in the SBFD subband, or the resources for the DL transmission include the SBFD symbol where the SBFD subband resides), the base station then transmits a DCI in the PDCCH before transmitting the DL transmission. Based on the information in the DCI, the base station modifies the DL / F symbols of the configured SBFD subband to DL / F symbols of a subband not configured with SBFD. In other words, the SBFD symbols in the symbol where the DL transmission resides are modified to DL symbols of a subband not configured with SBFD, and the DL transmission is then completed within the DL symbol. In this way, the resources for the DL transmission no longer overlap with the UL subband, because the SBFD symbols in the overlapping resources are modified to DL symbols of a subband not configured with SBFD (i.e., the SBFD subband configuration is canceled, so the UL subband no longer exists). The modified symbols should include the SBFD symbol where the resources for the DL transmission reside.

[0136] For example, if the base station intends to transmit the UL transmission in the resources scheduled or configured for the UL transmission, but the resources for the UL transmission overlap with DL symbols, the base station transmits a DCI in the PDCCH before transmitting the UL transmission. Based on the information in the DCI, the base station modifies the DL symbols in the non-SBFD subband to DL symbols in the SBFD subband, thereby ensuring that the resources for the UL transmission fall within the UL subband within the SBFD subband. This ensures that the UL transmission can be performed in its corresponding resources. The modified symbols should include the symbols where the resources for the UL transmission are located.

[0137] Option 1-2: The base station notifies the UE through (RRC) signaling A that the DL symbols (or F symbols, or both DL symbols and F symbols) of the subband configured with SBFD are allowed to be modified to DL symbols (or F symbols, or both DL symbols and F symbols) of the subband not configured with SBFD. Upon receiving this signaling, the base station can perform the aforementioned symbol modification operation for the UE configuration. If the base station does not provide this (RRC) signaling A to the UE, the base station cannot perform the aforementioned symbol modification operation for the UE configuration.

[0138] Alternatively, the UE reports to the base station through signaling that it supports the above-mentioned modification symbol, that is, the UE has the ability to perform the above-mentioned modification symbol operation, and the base station can configure the UE to perform the above-mentioned modification symbol operation. Otherwise, the base station cannot configure the UE to perform the above-mentioned modification symbol operation.

[0139] Aspect 2: Functional design of DCI.

[0140] Option 2-1, the DCI is used to determine the symbol attributes of certain symbols (specific symbols) in certain slots (or TDD frame structure periods or symbol configuration periods of full-duplex subbands), and the symbol attributes include: DL symbols (DL symbols that are not configured with SBFD), SBFD symbols (DL symbols / F symbols that are configured with SBFD subbands), F symbols (F symbols that are not configured with SBFD), etc. For example, if some symbols are indicated by the DCI, the symbol attributes of these symbols are changed from the original symbol attributes to the symbol attributes indicated by the DCI. Note that if the DL symbol / F symbol is configured with an SBFD subband, the DL / F symbol can be recorded as an SBFD symbol. If the SBFD subband of the SBFD symbol is canceled, the SBFD symbol is restored / falls back to the original DL symbol / F symbol. For example, the DCI includes at least one of the following parameters:

[0141] Parameter 1 is a parameter used to determine the slot (or TDD frame structure period or symbol configuration period of full-duplex subband). If this parameter is missing, the base station and UE default to: the determined slot (or TDD frame structure period or symbol configuration period of full-duplex subband) is the sth slot (or TDD frame structure period or symbol configuration period of full-duplex subband) after the slot in which the PDCCH where the DCI is located is received, where s is a natural number. If s is 0, it indicates the slot (or TDD frame structure period or symbol configuration period of full-duplex subband) where the PDCCH is located (also applicable to options 2-2, 2-3 and 2-4 below);

[0142] Parameter 2 is a parameter used to determine the symbol position in the determined slot (or TDD frame structure period or full-duplex subband symbol configuration period). If this parameter is missing, the base station and UE assume that the symbol attributes of all DL symbols and / or F symbols in the determined slot (or TDD frame structure period or full-duplex subband symbol configuration period) are executed according to the instruction of the symbol attribute parameter (parameter 3) (also applicable to options 2-2, 2-3 and 2-4 below);

[0143] Parameter 3 is a parameter for determining the symbol attributes of the determined symbols. If this parameter is missing, the base station and UE default to either: restoring / falling back the symbol attributes of the determined symbols to the original symbol attributes (i.e., canceling the SBFD subband of the determined symbols, so that the determined symbols return to the original DL symbols or F symbols that are not configured with full-duplex subbands) (also applicable to Option 2-2, Option 2-3, and Option 2-4 below); or, changing the symbol attributes of the determined symbols to SBFD symbols (also applicable to Option 2-2, Option 2-3, and Option 2-4 below).

[0144] Option 2-2: The DCI is used to determine that symbol attributes of certain symbols (specific symbols) in certain slots (or TDD frame structure periods or symbol configuration periods of full-duplex subbands) have changed, including at least one of the following: changing from an SBFD symbol to a DL symbol not configured for a full-duplex subband; changing from an SBFD symbol to an F symbol; changing from a DL symbol not configured for a full-duplex subband to an SBFD symbol; changing from an F symbol to an SBFD symbol; or restoring the original symbol attributes (i.e., canceling the existing symbol attributes). For example, the DCI includes at least one of the following parameters: parameter 4, which is a parameter for determining the slot (or TDD frame structure period or symbol configuration period of a full-duplex subband); parameter 5, which is a parameter for determining the symbol position in the determined slot (or TDD frame structure period or symbol configuration period of a full-duplex subband); and parameter 6, which is a parameter for determining the symbol attributes of the determined symbol.

[0145] Option 2-3: The DCI is used to determine whether certain SBFD symbols (specific symbols) in certain slots (or TDD frame structure periods or symbol configuration periods of full-duplex subbands) are changed to DL symbols (downlink symbols not configured with SBFD) (if the SBFD symbols were originally obtained by configuring DL symbols with SBFD subbands), or to F symbols (if the SBFD symbols were originally obtained by configuring F symbols with SBFD subbands). For example, the DCI includes at least one of the following parameters: parameter 7, which is a parameter used to determine the slot (or TDD frame structure period or symbol configuration period of full-duplex subbands); parameter 8, which is a parameter used to determine the symbol position in the determined slot (or TDD frame structure period or symbol configuration period of full-duplex subbands). The base station and UE agree that for the symbols determined by the DCI, if the determined symbols are SBFD symbols, the symbol attributes of these symbols are restored / reverted to the original DL symbols / F symbols.

[0146] Option 2-4: The DCI is used to determine whether the number of SBFD symbols in certain slots (or TDD frame structure periods or symbol configuration periods of full-duplex subbands) is increased or decreased by k. For example, the DCI indicates a TDD frame period or a symbol configuration period of a full-duplex subband, or a slot (or a TDD frame structure or a full-duplex subband symbol configuration period or slot agreed upon by the base station and the UE, including: the s-th (s is a natural number) TDD frame structure period or full-duplex subband symbol configuration period or slot after the slot where the PDCCH for receiving the DCI is located. s being 0 indicates the slot or TDD frame structure period or full-duplex subband symbol configuration period where the PDCCH is located, and in the indicated TDD frame structure period or full-duplex subband symbol configuration period or slot, the operation method of increasing or decreasing the SBFD symbols is determined (according to another indication information in the DCI or the agreement between the base station and the UE). The operation method includes at least one of the following:

[0147] Determine to add k SBFD symbols (first type symbols) from the end of the existing SBFD symbols (first type symbols);

[0148] Determine to add k SBFD symbols (first type symbols) from the beginning of the existing SBFD symbols (first type symbols);

[0149] Determine to reduce k SBFD symbols (first type symbols) from the end of the existing SBFD symbols (first type symbols) (the reduced SBFD symbols are modified to their original symbol attributes. For example, if the SBFD symbol is obtained by configuring a DL symbol as an SBFD symbol, it is restored to a DL symbol; for example, if the SBFD symbol is obtained by configuring an F symbol as an SBFD symbol, it is restored to an F symbol. This will not be repeated here).

[0150] It is determined that k SBFD symbols (first type symbols) are reduced backward from the beginning of the existing SBFD symbols (first type symbols).

[0151] Based on options 2-4, the DCI includes at least one of the following parameters:

[0152] Parameter 9 is a parameter used to determine the slot (or TDD frame structure period or SBFD symbol configuration period).

[0153] Parameter 10 is used to determine the number of additional SBFD symbols. If this parameter is omitted, all DL symbols and / or F symbols in the determined slot (or TDD frame structure period or SBFD symbol configuration period) are configured as SBFD symbols by default.

[0154] Parameter 11 is used to determine the number of SBFD symbols to be reduced. If this parameter is not specified, all SBFD symbols in the specified slot (or TDD frame structure period or SBFD symbol configuration period) are de-configured and restored to their original symbol attributes.

[0155] Parameter 12 is used to determine the operation mode of adding SBFD symbols. If this parameter is not provided, SBFD symbols are added from the end of the existing SBFD symbols.

[0156] Parameter 13 is a parameter used to determine the operation mode of reducing SBFD symbols. If this parameter is not provided, the default is to reduce SBFD symbols from the end of the existing SBFD symbols.

[0157] In summary, based on options 2-1 to 2-4, the DCI may include at least one of the following parameters:

[0158] The first parameter is used to determine the time slot, TDD frame structure period or full-duplex sub-band symbol configuration period;

[0159] The second parameter is used to determine the position of the specific symbol;

[0160] The third parameter is used to determine the symbol attribute of the specific symbol; wherein determining the symbol attribute corresponding to the symbol includes any one of the following: determining the symbol attribute of the specific symbol; determining that the symbol attribute of the specific symbol has changed; determining that a specific SBFD symbol is modified to a non-SBFD symbol; determining to increase or decrease k SBFD symbols, where k is a positive integer. Determining to increase or decrease k SBFD symbols includes at least one of the following: determining to increase k SBFD symbols from the end of an existing SBFD symbol; determining to increase k SBFD symbols from the beginning of an existing SBFD symbol; determining to decrease k SBFD symbols from the end of an existing SBFD symbol; determining to decrease k SBFD symbols from the beginning of an existing SBFD symbol;

[0161] The fourth parameter is used to indicate the number of additional SBFD symbols. If this parameter is not specified, all DL symbols and / or F symbols in the specified slot (or TDD frame structure period or full-duplex subband symbol configuration period) are configured as SBFD symbols.

[0162] The fifth parameter is used to determine the operation mode of adding SBFD symbols. If this parameter is not set, the default is to add SBFD symbols from the end of the existing SBFD symbols.

[0163] The sixth parameter is used to indicate whether to reduce the number of SBFD symbols. If this parameter is not specified, all SBFD symbols in the specified slot (or TDD frame structure period or full-duplex subband symbol configuration period) will have their SBFD subband configuration canceled and will be restored to their original symbol attributes.

[0164] The seventh parameter is a parameter used to determine the operation mode of reducing SBFD symbols. If this parameter is not provided, the default is to reduce SBFD symbols from the end of the existing SBFD symbols.

[0165] Based on options 2-1 to 2-4 above, the validity of the determined symbol attributes satisfies any of the following:

[0166] The validity of the determined symbolic attributes lasts until they are instructed to change again;

[0167] The determined symbol attributes are only valid for this instruction;

[0168] The determined symbol attributes are valid within the current TDD frame period;

[0169] The determined symbol attributes are only valid within the symbol configuration period of this full-duplex sub-band;

[0170] The determined symbol attributes are valid within the validity period also indicated by the DCI; for example, for n TDD frame periods, or for m full-duplex sub-band symbol configuration periods.

[0171] The parameter designs in the above four options can be used in combination if they do not conflict. For example, a parameter in option 2-2 can be combined with one or more parameters in option 2-1 in one DCI.

[0172] Aspect 3, DCI transmission method.

[0173] Option 3-1: DCI is transmitted through the public PDCCH.

[0174] For example, if the PDCCH is a public PDCCH, the DCI in the PDCCH is not in the DCI format for scheduling PUSCH and is scrambled by a predefined RNTI. The base station and the UE agree that the predefined RNTI is used to indicate that the DCI is a DCI that indicates / modifies / rolls back the symbol attributes of one or more symbols in a slot (or a TDD frame structure period or a symbol configuration period of a full-duplex subband), and based on one or more parameters in the DCI, the (new) symbol attributes of one or more symbols in the one or more slots (or a TDD frame structure period or a symbol configuration period of a full-duplex subband) can be determined. That is, the DCI includes parameters indicating one or more slots (or a TDD frame structure period or a symbol configuration period of a full-duplex subband), and one or more slots (or a TDD frame structure period or a symbol configuration period of a full-duplex subband) are determined based on the parameters. In some embodiments, the DCI also includes a parameter indicating a symbol position, based on which it is determined which symbols' symbol attributes are indicated / modified / reverted in the determined slot (or TDD frame structure period or symbol configuration period of a full-duplex subband). If the DCI does not include a symbol position parameter, the symbol attributes of all SBFD symbols in the determined slot (or TDD frame structure period or symbol configuration period of a full-duplex subband) are changed by default to cancel the SBFD subband and restore the original symbol attributes. The DCI may also adopt one of the designs in Options 2-1 to 2-4 above, for example, the DCI includes the various parameters proposed in one of the designs in Options 2-1 to 2-4 above.

[0175] The indication / modification / fallback of the agreement between the base station and the UE includes at least one of the following:

[0176] The symbol attributes of the determined symbol are indicated by additional parameters in the DCI (the original symbol attributes of the indicated symbol are ignored, but the symbol attributes newly indicated by the DCI are included);

[0177] The symbol attribute of the symbol determined based on the DCI is changed from an SBFD symbol to a DL symbol / F symbol (if the symbol attribute of the determined symbol is an SBFD symbol);

[0178] The symbol attribute of the symbol determined based on the DCI is changed from a DL symbol / F symbol to a SBFD symbol (if the original symbol attribute of the determined symbol is a DL symbol / F symbol).

[0179] Option 3-2: DCI is transmitted via a UE-specific PDCCH.

[0180] The DCI introduces an eighth parameter, or reinterprets an existing parameter as the eighth parameter. The eighth parameter takes the first value, indicating that the function of the DCI is to determine symbol attributes; the eighth parameter takes the second value, indicating that the function of the first information is to schedule uplink / downlink data. Furthermore, one or more parameters in the DCI are used to describe the symbol attributes of one or more symbols in one or more slots (or TDD frame structure periods or symbol configuration periods of full-duplex subbands). The DCI may also adopt one of the designs in options 2-1 to 2-4 above. For example, the DCI includes the various parameters proposed in one of the designs in options 2-1 to 2-4 above.

[0181] For example, if the PDCCH is a UE-specific PDCCH, the DCI in the PDCCH is a DCI format for scheduling PUSCH and is scrambled by C-RNTI. If the PDCCH is dedicated, the eighth parameter is the first value, and the DCI in the PDCCH is not used to schedule PUSCH, or to schedule PUSCH without UL data. In this way, since the DCI is also scrambled using C-RNTI, based on the eighth parameter, it is possible to avoid the UE being unable to distinguish whether the DCI is used to schedule PUSCH with UL data or to indicate that the symbol attributes of some symbols in some slots (or TDD frame structure period or symbol configuration period of full-duplex subband) are indicated / modified / fallbacked according to the RNTI type.

[0182] For example, by (reinterpreting) the PUSCH time domain resource allocation parameters in the DCI, a k2 value and (optional) PUSCH symbol position can be obtained, wherein the k2 value is used to determine the slot (or TDD frame structure period or full-duplex subband symbol configuration period). In some embodiments, the PUSCH symbol position is used to determine the symbol position of the symbol attribute to be indicated / modified / reverted in the determined slot (or TDD frame structure period or full-duplex subband symbol configuration period). Then, the symbol attribute of the symbol determined based on k2 and the PUSCH symbol position is indicated / modified / reverted. For example, the symbol attribute of the determined symbol is directly indicated as one of the following through additional parameters in the DCI (e.g., reinterpreting the PUSCH frequency domain resources): DL symbol, SBFD symbol, F symbol. In this case, the symbol attribute of the determined symbol is based on the additional signaling indication (the original symbol attribute is ignored). For another example, if the symbol attribute of the determined symbol is originally an SBFD symbol, the symbol attribute of the determined symbol is agreed to be changed from an SBFD symbol to a DL symbol, or if the symbol attribute of the determined symbol is originally a DL symbol, the symbol attribute of the determined symbol is agreed to be changed from a DL symbol to an SBFD symbol. In this case, no additional indication information is required in the DCI to indicate the symbol attribute of the determined symbol. This approach does not require the UE to monitor additional DCI formats, thereby reducing the number of DCI formats monitored by the UE.

[0183] For example, if the PDCCH is a UE-specific PDCCH, the DCI in the PDCCH is a DCI format for scheduling PDSCH and is scrambled by C-RNTI. If the PDCCH is dedicated, the eighth parameter is the first value, and the DCI in the PDCCH is not used to schedule a PDSCH, or to schedule a PDSCH without DL data. In this way, since the DCI is also scrambled using C-RNTI, based on the eighth parameter, the UE can avoid being unable to distinguish whether the DCI is used to schedule a PDSCH with DL data or to indicate that the symbol attributes of some symbols in some slots (or TDD frame structure period or symbol configuration period of full-duplex subband) are indicated / modified / fallbacked according to the RNTI type.

[0184] For example, a k0 value and (optional) PDSCH symbol position can be obtained by (reinterpreting) the PDSCH time domain resource allocation parameters in the DCI, wherein the k0 value is used to determine the slot (or TDD frame structure period or full-duplex subband symbol configuration period). In some embodiments, the PDSCH symbol position is used to determine the symbol position of the symbol attribute to be indicated / modified / reverted in the determined slot (or TDD frame structure period or full-duplex subband symbol configuration period). Then, the symbol attribute of the symbol determined based on k0 and the PDSCH symbol position is indicated / modified / reverted. For example, the symbol attribute of the determined symbol is directly indicated as one of the following through additional parameters in the DCI (e.g., reinterpreting the PDSCH frequency domain resources): DL symbol, SBFD symbol, F symbol. In this case, the symbol attribute of the determined symbol is based on the additional signaling indication (the original symbol attribute is ignored). For another example, if the symbol attribute of the determined symbol was originally an SBFD symbol, the symbol attribute of the determined symbol is scheduled to be changed from an SBFD symbol to a DL symbol, or if the symbol attribute of the determined symbol was originally a DL symbol, the symbol attribute of the determined symbol is scheduled to be changed from a DL symbol to an SBFD symbol. In this case, no additional indication information is required in the DCI to indicate the symbol attribute of the determined symbol. This approach does not require the UE to monitor additional DCI formats, thereby reducing the number of DCI formats monitored by the UE.

[0185] Aspect 4: Modify other restrictions on symbol properties.

[0186] The following rules are included for modifying DL / F symbols in an SBFD subband to DL / F symbols in a non-SBFD subband:

[0187] Rule 4-1: DL symbols configured with SBFD subbands are modified. DL symbols not configured with SBFD subbands are modified:

[0188] For example, the base station and the UE agree that if a DL symbol is configured with an SBFD subband, then based on the notification of the above DCI, the DL symbol can only be modified / fallback to a DL symbol that is not configured with an SBFD subband.

[0189] In some embodiments, based on the above method, in one slot, the DL symbols obtained through the above modification are required to be continuous (if only one modified DL symbol is obtained, continuity is not required), and further (optionally) the starting symbol or the ending symbol of the obtained DL symbol is required to be continuous with the DL symbol configured by the uplink and downlink common configuration signaling (tdd-UL-DL-ConfigurationCommon); otherwise, it is prohibited to modify the DL symbol of the configured SBFD subband to the DL symbol of the non-configured SBFD subband.

[0190] In some embodiments, based on the above method, within a TDD frame structure period, or within a symbol configuration period of a full-duplex subband, the DL symbol obtained by modification is required to be continuous (if only one modified DL symbol is obtained, continuity is not required), and further (optionally), the starting symbol or the ending symbol of the obtained DL symbol is required to be continuous with the DL symbol configured by tdd-UL-DL-ConfigurationCommon; otherwise, it is prohibited to modify the DL symbol of the configured SBFD subband to the DL symbol of the non-configured SBFD subband.

[0191] Rule 4-2: The F symbol of the SBFD subband is modified to the F symbol of the non-SBFD subband:

[0192] For example, the base station and the UE agree that if an F symbol is configured with an SBFD subband, then based on the notification of the above DCI, the F symbol can only be modified / fallback to an F symbol that is not configured with an SBFD subband.

[0193] In some embodiments, based on the above method, in one slot, the F symbols obtained by the above modification are required to be continuous (if only one modified F symbol is obtained, continuity is not required), and further (optionally) the starting symbol or the ending symbol of the obtained F symbol is required to be continuous with the DL symbol or F symbol configured by the tdd-UL-DL-ConfigurationCommon signaling; otherwise, it is prohibited to modify the F symbol of the configured SBFD subband to the F symbol of the non-configured SBFD subband.

[0194] In some embodiments, based on the above method, within a TDD frame structure period, or within a symbol configuration period of a full-duplex subband, the F symbols obtained by modification are required to be continuous (if only one modified F symbol is obtained, continuity is not required), and further (optionally) the starting symbol or the ending symbol of the obtained F symbol is required to be continuous with the DL symbol or F symbol configured by the tdd-UL-DL-ConfigurationCommon signaling; otherwise, it is prohibited to modify the F symbol of the configured SBFD subband to the F symbol of the non-configured SBFD subband.

[0195] Rule 4-3: The F symbol of the SBFD subband is modified to the DL symbol of the non-SBFD subband:

[0196] For example, the base station and the UE agree that if an F symbol is configured with an SBFD subband, then based on the notification of the above DCI, the F symbol can only be modified to a DL symbol that is not configured with an SBFD subband.

[0197] In some embodiments, based on the above method, in one slot, the DL symbols obtained by the above modification are required to be continuous (if only one modified DL symbol is obtained, continuity is not required), and further (optionally) the starting symbol or the ending symbol of the obtained DL symbol is required to be continuous with the DL symbol or F symbol configured by the tdd-UL-DL-ConfigurationCommon signaling; otherwise, it is prohibited to modify the F symbol of the configured SBFD subband to the DL symbol of the non-configured SBFD subband.

[0198] In some embodiments, based on the above method, within a TDD frame structure period, or within a symbol configuration period of a full-duplex subband, the DL symbols obtained by modification are required to be continuous (if only one modified DL symbol is obtained, continuity is not required), and further (optionally) the starting symbol or the ending symbol of the obtained DL symbol is required to be continuous with the DL symbol or F symbol configured by the tdd-UL-DL-ConfigurationCommon signaling; otherwise, it is prohibited to modify the F symbol of the configured SBFD subband to the DL symbol of the non-configured SBFD subband.

[0199] The following rules are included for modifying DL / F symbols that are not configured with SBFD subbands to DL / F symbols that are configured with SBFD subbands:

[0200] Rule 4-4: DL symbols not configured with SBFD subbands are modified to DL symbols configured with SBFD subbands (SBFD symbols):

[0201] For example, the base station and the UE agree that if a DL symbol is not configured with an SBFD subband, then based on the notification of the DCI, the DL symbol can be modified to a DL symbol configured with an SBFD subband (ie, an SBFD symbol).

[0202] In some embodiments, based on the above method, within a slot, the SBFD symbols obtained through the above modification are required to be continuous (if only one modified SBFD symbol is obtained, continuity is not required). Furthermore (optionally), the starting symbol or the ending symbol of the obtained SBFD symbol is required to be continuous with the original SBFD symbol (if any). Otherwise, modification of a DL symbol of a subband not configured with SBFD to a DL symbol of a subband configured with SBFD (i.e., an SBFD symbol) is prohibited. Note: If the symbol configuration period of a full-duplex subband is composed of multiple (e.g., two) TDD frame structure periods, and no SBFD symbol is configured within one of the TDD frame periods, then within a slot within that TDD frame period, when a DL symbol of a subband not configured with SBFD is modified to a DL symbol of a subband configured with SBFD (i.e., an SBFD symbol) based on the above method, the SBFD symbols obtained through the modification are continuous with one another and are not required to be continuous with the original SBFD symbols within the symbol configuration period of the full-duplex subband.

[0203] In some embodiments, based on the above method, within a TDD frame structure period or within a symbol configuration period of a full-duplex subband, the SBFD symbols obtained through the above modification are required to be continuous (if only one modified SBFD symbol is obtained, continuity is not required). Furthermore (optionally), the starting symbol or the ending symbol of the obtained SBFD symbol is required to be continuous with the original SBFD symbol (if any). Otherwise, modification of a DL symbol of a subband not configured with SBFD to a DL symbol of a subband configured with SBFD (i.e., an SBFD symbol) is prohibited. Note: If the symbol configuration period of a full-duplex subband is composed of multiple (e.g., two) TDD frame structure periods, and no SBFD symbol is configured within one of the TDD frame periods, then within that TDD frame period, when a DL symbol of a subband not configured with SBFD is modified to a DL symbol of a subband configured with SBFD (i.e., an SBFD symbol) based on the above method, the SBFD symbols obtained through the modification are continuous with each other, and are not required to be continuous with the original SBFD symbols within the symbol configuration period of the full-duplex subband.

[0204] Rule 4-5: F symbols that are not configured with SBFD subbands are modified to F symbols that are configured with SBFD subbands (SBFD symbols):

[0205] For example, the base station and the UE agree that if an F symbol is not configured with an SBFD subband, then based on the notification of the DCI, the F symbol can be modified to an F symbol configured with an SBFD subband (ie, an SBFD symbol).

[0206] In some embodiments, based on the above method, within a slot, the SBFD symbols obtained through the above modification are required to be continuous (if only one modified SBFD symbol is obtained, continuity is not required). Furthermore (optionally), the starting symbol or the ending symbol of the obtained SBFD symbol is required to be continuous with the original SBFD symbol (if any); otherwise, the F symbol of a subband not configured with SBFD is prohibited from being modified to an F symbol of a subband configured with SBFD (i.e., an SBFD symbol). Note: If the symbol configuration period of a full-duplex subband is composed of multiple (e.g., two) TDD frame structure periods, and no SBFD symbol is configured within one of the TDD frame periods, then within a slot within the TDD frame period, when an F symbol of a subband not configured with SBFD is modified to an F symbol of a subband configured with SBFD (i.e., an SBFD symbol) based on the above method, the SBFD symbols obtained through the modification are continuous with each other, and the obtained SBFD symbol is not required to be continuous with the original SBFD symbols within the symbol configuration period of the full-duplex subband.

[0207] In some embodiments, based on the above method, within a TDD frame structure period or within a symbol configuration period of a full-duplex subband, the SBFD symbols obtained through the above modification are required to be continuous (if only one modified SBFD symbol is obtained, continuity is not required). Furthermore (optionally), the starting symbol or the ending symbol of the obtained SBFD symbol is required to be continuous with the original SBFD symbol (if any). Otherwise, the F symbol of a subband not configured with SBFD is prohibited from being modified to an F symbol of a subband configured with SBFD (i.e., an SBFD symbol). Note: If the symbol configuration period of a full-duplex subband is composed of multiple (e.g., two) TDD frame structure periods, and no SBFD symbol is configured within one of the TDD frame periods, then within that TDD frame period, when an F symbol of a subband not configured with SBFD is modified to an F symbol of a subband configured with SBFD (i.e., an SBFD symbol) based on the above method, the SBFD symbols obtained through the modification are continuous with each other, and the obtained SBFD symbol is not required to be continuous with the original SBFD symbol within the symbol configuration period of the full-duplex subband.

[0208] Aspect 5, some other additional requirements.

[0209] Based on the above processing, the conversion from SBFD symbols to DL symbols / F symbols (second-type symbols changed to first-type symbols) cannot introduce new transition points within a slot, within a TDD frame structure period, or within a symbol configuration period for a full-duplex subband. These transition points include: the transition point from an SBFD symbol to a DL symbol / F symbol (referring to a DL symbol / F symbol in a subband not configured with SBFD), and the transition point from a DL symbol / F symbol (referring to a DL symbol / F symbol in a subband not configured with SBFD) to an SBFD symbol. Based on the above processing, if any of the above transition points are added within a TDD frame structure period or within a symbol configuration period for a full-duplex subband, the number of additional transition points shall not exceed two. For the case where the symbol configuration period of a full-duplex sub-band is composed of multiple TDD frame structure periods, based on the above-mentioned processing within the symbol configuration period of a full-duplex sub-band, if the above-mentioned conversion point is added, the number of increases within one TDD frame structure period of the multiple TDD frame structure periods shall not exceed 2 (or the number of increases within the symbol configuration period of the full-duplex sub-band shall not exceed 2n (n is the number of multiple TDD frame structure periods), and the number of increases within one TDD frame structure period of the multiple TDD frame structure periods shall not exceed 2).

[0210] Based on the above processing, the conversion from SBFD symbols to DL symbols / F symbols occurs only at the end or beginning (consecutive) SBFD symbols within a TDD frame structure period (or within a slot or within a full-duplex subband symbol configuration period), which helps reduce the number of conversion points. The conversion from DL symbols / F symbols to SBFD symbols occurs only at (consecutive) DL symbols / F symbols adjacent to SBFD symbols within a TDD frame structure period (or within a slot or within a full-duplex subband symbol configuration period). Based on the above operation, the updated SBFD symbols within a TDD frame structure period (or within a slot or within a full-duplex subband symbol configuration period) remain continuous.

[0211] Based on the above processing, after the DL symbol / F symbol is converted into an SBFD symbol, the configuration of the SBFD subband in the obtained SBFD symbol (including time-frequency resources, subcarrier spacing, CP, etc.) is defaulted to be the same as the configuration of the SBFD subband in the original SBFD symbol.

[0212] The above mainly introduces the scheme of the embodiment of the present disclosure from the perspective of method. A signal transmission device is also shown below, which is used to execute the signal transmission method in any of the above embodiments and possible implementation methods thereof. It can be understood that, in order to implement the signal transmission method, the signal transmission device includes hardware structures and / or software modules corresponding to the execution of each function; those skilled in the art should easily realize that, in combination with the algorithm steps of each example described in the embodiment of the present disclosure, the present disclosure can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present disclosure.

[0213] The embodiment of the present disclosure can divide the functional modules of the signal transmission device according to the above-mentioned method embodiment. For example, each functional module can be divided corresponding to each function, or two or more functions can be integrated into one functional module. The above-mentioned integrated module can be implemented in the form of hardware or software. It should be noted that the division of modules in the embodiment of the present disclosure is schematic and is only a logical function division. There may be other division methods in actual implementation. The following is an example of dividing each functional module corresponding to each function.

[0214] FIG7 is a diagram of a signal transmission device provided by an embodiment of the present disclosure. The signal transmission device is applied to a first node. The signal transmission device 70 includes: a processing module 71 and a communication module 72.

[0215] The processing module 71 is configured to generate first information, where the first information is used to determine a symbol attribute corresponding to a symbol.

[0216] The communication module 72 is configured to send first information to the second node, where the first information is used to determine a symbol attribute corresponding to the symbol.

[0217] In some embodiments, the communication module 72 is used to perform reception or transmission of the signal to be transmitted on a first transmission resource containing the symbol based on the symbol attribute corresponding to the symbol determined by the first information; the first transmission resource overlaps with the transmission resource of the signal to be transmitted between the first node and the second node, and the transmission direction supported by the first transmission resource conflicts with the transmission direction of the signal to be transmitted.

[0218] In some embodiments, the communication module 72 is used to perform reception or transmission of the signal to be transmitted based on the symbol attribute corresponding to the symbol determined based on the first information, wherein the transmission direction of the signal to be transmitted does not conflict with the symbol attribute corresponding to the symbol determined based on the first information.

[0219] In some embodiments, the signal to be transmitted for reception or transmission on the symbol includes at least one of the following:

[0220] Physical downlink control channel PDCCH;

[0221] Physical downlink shared channel PDSCH;

[0222] Synchronization signal and physical broadcast channel block SSB;

[0223] Physical Random Access Channel PRACH;

[0224] Physical uplink control channel PUCCH;

[0225] Downlink reference signal;

[0226] Physical uplink shared channel PUSCH;

[0227] Uplink reference signal.

[0228] In some embodiments, the symbol attributes of the symbol include a first type symbol and a second type symbol; the first type symbol is a symbol configured with a full-duplex sub-band, and the second type symbol is a symbol not configured with a full-duplex sub-band;

[0229] The first type of symbols includes at least one of the following: a first type of downlink symbol, a first type of flexible symbol;

[0230] The second type of symbols includes at least one of the following: a second type of downlink symbol and a second type of flexible symbol.

[0231] In some embodiments, when the transmission direction of the signal to be transmitted is an uplink direction, the first transmission resource includes at least one of the following:

[0232] Downlink subbands on first type symbols;

[0233] guard intervals on symbols of the first type;

[0234] Second type of symbols.

[0235] In some embodiments, when the transmission direction of the signal to be transmitted is a downlink direction, the first transmission resource includes at least one of the following:

[0236] Uplink subband on first type symbols;

[0237] Guard interval on symbols of the first type.

[0238] In some embodiments, the first information is used to determine a symbol attribute corresponding to the symbol, including any of the following:

[0239] Determine the symbolic properties of a particular symbol;

[0240] Determine if the symbolic properties of a particular symbol have changed;

[0241] determining that a particular first-type symbol is modified into a second-type symbol;

[0242] Determine whether to increase or decrease k first type symbols, where k is a positive integer.

[0243] In some embodiments, determining to increase or decrease k first-type symbols includes at least one of the following:

[0244] Determine to add k first-type symbols from the end of the existing first-type symbols;

[0245] Determine to add k first-type symbols from the beginning of the existing first-type symbols;

[0246] Determine to reduce k first type symbols from the end of the existing first type symbols;

[0247] Determine k first-type symbols to be reduced from the beginning of the existing first-type symbols.

[0248] In some embodiments, the first information includes at least one of the following parameters: a first parameter, a second parameter, a third parameter, a fourth parameter, a fifth parameter, a sixth parameter, and a seventh parameter; wherein the first parameter is used to determine the time slot, the TDD frame structure period, or the symbol configuration period of the full-duplex subband; the second parameter is used to determine the position of a specific symbol; the third parameter is used to determine the symbol attribute of a specific symbol; the fourth parameter is used to indicate the number of first-type symbols to be added; the fifth parameter is used to indicate the increase method; the sixth parameter is used to indicate the number of first-type symbols to be reduced; and the seventh parameter is used to indicate the decrease method.

[0249] In some embodiments, the validity of the determined symbol attribute satisfies any of the following:

[0250] The validity of the determined symbolic attributes lasts until they are instructed to change again;

[0251] The determined symbol attributes are only valid for this instruction;

[0252] The determined symbol attributes are valid within the current TDD frame period;

[0253] The determined symbol attributes are valid within the current first type symbol configuration period;

[0254] The first information of the determined symbol attribute is also valid within the validity period indicated.

[0255] In some embodiments, determining a symbol attribute corresponding to a symbol includes at least one of the following:

[0256] Modify the first type of symbol into the second type of symbol;

[0257] Modify the second type symbol to the first type symbol.

[0258] In some embodiments, modifying the first type symbol to the second type symbol is subject to at least one of the following constraints:

[0259] The first type of downlink symbols are only allowed to be modified into the second type of downlink symbols;

[0260] The first type flexible symbol is only allowed to be modified into the second type downlink symbol, or the first type flexible symbol is only allowed to be modified into the second type flexible symbol;

[0261] The modified second type symbols in the same time slot are continuous;

[0262] In the same time slot, TDD frame structure period or full-duplex subband symbol configuration period, the modified second type downlink symbol is continuous with the second type downlink symbol or second type flexible symbol configured by the uplink and downlink common configuration signaling;

[0263] In the same time slot, TDD frame structure period or full-duplex subband symbol configuration period, the modified second type flexible symbol is continuous with the second type downlink symbol or second type flexible symbol configured by the uplink and downlink common configuration signaling.

[0264] In some embodiments, modifying the second type symbol to the first type symbol is subject to at least one of the following constraints:

[0265] The second type of downlink symbols are only allowed to be modified into the first type of downlink symbols;

[0266] The second type of flexible symbols can only be modified into the first type of flexible symbols;

[0267] The modified first type symbols in the same time slot are continuous;

[0268] The modified first type downlink symbol is continuous with the original first type downlink symbol in the same time slot;

[0269] The modified first type flexible symbol is continuous with the original first type flexible symbol in the same time slot;

[0270] The number of transition points added within the same time slot, TDD frame structure period, or symbol configuration period of a full-duplex subband does not exceed a preset number, and the transition points include: a transition point from a first type of symbol to a second type of symbol, and a transition point from a second type of symbol to a first type of symbol.

[0271] In some embodiments, the constraints are determined by one of the following:

[0272] The first node determines and notifies the second node;

[0273] The second node determines and notifies the first node;

[0274] Determined by negotiation between the first node and the second node;

[0275] is predefined between the first node and the second node.

[0276] In some embodiments, the first information is a downlink control information format.

[0277] In some embodiments, the first information is transmitted via a common physical control channel or via a physical control channel dedicated to the terminal device.

[0278] In some embodiments, when the first information is transmitted through a common physical control channel, the first information in the common physical control channel is scrambled by a predefined RNTI, wherein the predefined RNTI indicates that the function of the first information is to determine symbol attributes.

[0279] In some embodiments, when the first information is transmitted through a physical control channel dedicated to the terminal device, the first information includes an eighth parameter. By setting the eighth parameter to a first value, it is indicated that the function of the first information is to determine symbol attributes. By setting the eighth parameter to a second value, it is indicated that the function of the first information is to schedule uplink / downlink data.

[0280] In some embodiments, the first information is a DCI format for scheduling PDSCH, and the DCI format is scrambled by C-RNTI, and the eighth parameter is the first value, then the DCI format is not used to schedule a PDSCH or is used to schedule a PDSCH without downlink data; or, the first information is a DCI format for scheduling PUSCH, and the DCI format is scrambled by C-RNTI, and the eighth parameter is the first value, then the DCI format is not used to schedule a PUSCH or is used to schedule a PUSCH without uplink data.

[0281] In some embodiments, the communication node 72 is further configured to send second information to the second node, where the second information is configured to indicate that the second node is allowed to modify the symbol attribute.

[0282] In some embodiments, the communication node 72 is further configured to receive third information sent by the second node, where the third information is used to indicate that the second node supports modifying symbol attributes.

[0283] FIG8 is a diagram of a signal transmission device provided by an embodiment of the present disclosure. The signal transmission device is applied to a second node. The signal transmission device 80 includes: a communication module 81 and a processing module 82.

[0284] The communication module 81 is configured to receive first information from a first node, where the first information is used to determine a symbol attribute corresponding to a symbol.

[0285] The processing module 82 is configured to determine a symbol attribute corresponding to the symbol based on the first information.

[0286] In some embodiments, the communication module 81 is used to perform reception or transmission of the signal to be transmitted on a first transmission resource containing the symbol based on the symbol attribute corresponding to the symbol determined by the first information; the first transmission resource overlaps with the transmission resource of the signal to be transmitted between the first node and the second node, and the transmission direction supported by the first transmission resource conflicts with the transmission direction of the signal to be transmitted.

[0287] In some embodiments, the communication module 81 is used to perform reception or transmission of the signal to be transmitted based on the symbol attribute corresponding to the symbol determined based on the first information, wherein the transmission direction of the signal to be transmitted does not conflict with the symbol attribute corresponding to the symbol determined based on the first information.

[0288] In some embodiments, the communication module 81 is further configured to receive second information from the first node, where the second information is configured to indicate that the second node is allowed to modify the symbol attribute.

[0289] In some embodiments, the communication module 81 is further configured to send third information to the first node, where the third information is configured to indicate that the second node supports modifying symbol attributes.

[0290] For a detailed introduction to the first transmission resource, the overlap between the first transmission resource and the transmission resource of the signal to be transmitted between the first node and the second node, the conflict between the transmission direction supported by the first transmission resource and the transmission direction of the signal to be transmitted, and determining the symbol attributes corresponding to the symbol and other related processing processes, please refer to the description on the first node side.

[0291] In the case of implementing the functions of the above-mentioned integrated modules in hardware, the embodiments of the present disclosure also provide a possible structure of a communication device for executing the signal transmission method provided in the embodiments of the present disclosure. As shown in Figure 9, the communication device 900 includes: a memory 901, a processor 902, a communication interface 903, and a bus 904.

[0292] The memory 901 may be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or other type of dynamic storage device that can store dynamic information and instructions, an electrically erasable programmable read-only memory (EEPROM), a disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto.

[0293] The processor 902 may implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the embodiments of the present disclosure. The processor 902 may be a central processing unit, a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. The processor 902 may implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the embodiments of the present disclosure. The processor 902 may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and the like.

[0294] The communication interface 903 is used to connect to other devices via a communication network, such as Ethernet, wireless access network, or wireless local area network (WLAN).

[0295] In some embodiments, the memory 901 may exist independently of the processor 902 and may be connected to the processor 902 via a bus 904 for storing instructions or program codes. When the processor 902 calls and executes the instructions or program codes stored in the memory 901, the signal transmission method provided in the embodiments of the present disclosure can be implemented.

[0296] In some embodiments, the memory 901 may also be integrated with the processor 902 .

[0297] Bus 904 can be an Extended Industry Standard Architecture (EISA) bus, for example. Bus 904 can be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, FIG9 shows bus 904 using only a single thick solid line. This does not imply that there is only one bus or only one type of bus.

[0298] Some embodiments of the present disclosure provide a computer-readable storage medium (e.g., a non-transitory computer-readable storage medium), which stores computer program instructions. When the computer program instructions are executed on a computer, the computer executes the signal transmission method described in any of the above embodiments.

[0299] In an exemplary embodiment, the computer may be the aforementioned signal transmission device, and the present disclosure does not limit the specific form of the computer.

[0300] In some examples, the computer-readable storage media described above may include, but are not limited to, magnetic storage devices (e.g., hard disks, floppy disks, or magnetic tapes), optical disks (e.g., compact disks (CDs), digital versatile disks (DVDs), etc.), smart cards, and flash memory devices (e.g., erasable programmable read-only memories (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.

[0301] An embodiment of the present disclosure provides a computer program product comprising instructions. When the computer program product is run on a computer, the computer is enabled to execute the signal transmission method described in any one of the above embodiments.

[0302] The above is only a specific embodiment of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or replacements within the technical scope disclosed in the present disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A signal transmission method, applied to a first node, wherein: The method comprises: First information is sent to the second node, where the first information is used to determine a symbol attribute corresponding to the symbol.

2. The method according to claim 1, further comprising: Based on the symbol attribute corresponding to the symbol determined by the first information, reception or transmission of the signal to be transmitted is performed on the first transmission resource containing the symbol, wherein the first transmission resource overlaps with the transmission resource of the signal to be transmitted, and the transmission direction supported by the first transmission resource conflicts with the transmission direction of the signal to be transmitted.

3. The method according to claim 1, further comprising: Based on the symbol attribute corresponding to the symbol determined based on the first information, reception or transmission of the signal to be transmitted is performed, wherein the transmission direction of the signal to be transmitted does not conflict with the symbol attribute corresponding to the symbol determined based on the first information.

4. The method according to claim 1, wherein: The signal to be transmitted for receiving or transmitting on the symbol includes at least one of the following: Physical downlink control channel PDCCH; Physical downlink shared channel PDSCH; Synchronization signal and physical broadcast channel block SSB; Physical Random Access Channel PRACH; Physical uplink control channel PUCCH; Downlink reference signal; Physical uplink shared channel PUSCH; Uplink reference signal.

5. The method according to claim 1 or 2, wherein: The symbol attributes of the symbol include a first type symbol and a second type symbol; the first type symbol is a symbol configured with a full-duplex sub-band, and the second type symbol is a symbol not configured with a full-duplex sub-band; The first type of symbol includes at least one of the following: a first type of downlink symbol, a first type of flexible symbol; The second type of symbols includes at least one of the following: a second type of downlink symbol and a second type of flexible symbol.

6. The method according to claim 2, wherein: When the transmission direction of the signal to be transmitted is an uplink direction, the first transmission resource includes at least one of the following: Downlink subbands on symbols of the first type; a guard interval on the first type of symbols; Second type of symbol.

7. The method according to claim 2, wherein: When the transmission direction of the signal to be transmitted is a downlink direction, the first transmission resource includes at least one of the following: Uplink subband on first type of symbols; A guard interval on the first type of symbols.

8. The method according to claim 1, wherein: The first information is used to determine a symbol attribute corresponding to the symbol, including any of the following: Determine the symbolic properties of a particular symbol; Determining that a symbol attribute of the specific symbol changes; determining that a particular first-type symbol is modified to a second-type symbol; Determine to increase or decrease k first-type symbols, where k is a positive integer.

9. The method according to claim 8, wherein: The determining to increase or decrease k first-type symbols includes at least one of the following: Determine to add k first-type symbols from the end of the existing first-type symbols; Determine to add k first-type symbols from the beginning of the existing first-type symbols; Determine to reduce k first-type symbols from the end of the existing first-type symbols; Determine to reduce k first-type symbols from the beginning of the existing first-type symbols.

10. The method according to claim 1, wherein: The first information includes at least one of the following parameters: a first parameter, a second parameter, a third parameter, a fourth parameter, a fifth parameter, a sixth parameter, and a seventh parameter; wherein the first parameter is used to determine a time slot, a time division duplex TDD frame structure period, or a symbol configuration period of a full-duplex subband; the second parameter is used to determine a position of a specific symbol; the third parameter is used to determine a symbol attribute of the specific symbol; the fourth parameter is used to indicate the number of first type symbols added; the fifth parameter is used to indicate an increase method; the sixth parameter is used to indicate a decrease number of first type symbols; and the seventh parameter is used to indicate a decrease method.

11. The method according to claim 1, wherein: The validity of the determined symbol attribute satisfies any of the following: The validity of the determined symbolic attributes lasts until they are instructed to change again; The determined symbol attributes are only valid for this instruction; The determined symbol attributes are valid within the current TDD frame period; The determined symbol attributes are valid within the current first type symbol configuration period; The first information of the determined symbol attribute is also valid within the validity period indicated.

12. The method according to claim 1, wherein: The determining of the symbol attribute corresponding to the symbol includes at least one of the following: Modify the first type of symbol into the second type of symbol; The second type of symbol is modified to the first type of symbol.

13. The method according to claim 12, wherein: The modification of the first type symbol to the second type symbol is subject to at least one of the following constraints: The first type of downlink symbols are only allowed to be modified into the second type of downlink symbols; The first type flexible symbol is only allowed to be modified into the second type downlink symbol, or the first type flexible symbol is only allowed to be modified into the second type flexible symbol; The modified second type symbols in the same time slot are continuous; In the same time slot, TDD frame structure period or symbol configuration period of the full-duplex subband, the modified second type downlink symbol is continuous with the second type downlink symbol or the second type flexible symbol configured by the uplink and downlink common configuration signaling; In the same time slot, TDD frame structure period or symbol configuration period of the full-duplex subband, the modified second type flexible symbol is continuous with the second type downlink symbol or the second type flexible symbol configured by the uplink and downlink common configuration signaling.

14. The method according to claim 12, wherein: The modification of the second type symbol to the first type symbol is subject to at least one of the following constraints: The second type of downlink symbols are only allowed to be modified into the first type of downlink symbols; The second type of flexible symbol is only allowed to be modified into the first type of flexible symbol; The first type of symbols modified in the same time slot are continuous; The modified first type downlink symbol is continuous with the original first type downlink symbol in the same time slot; The modified first type flexible symbol is continuous with the original first type flexible symbol in the same time slot; The number of transition points added in the same time slot, TDD frame structure period or full-duplex sub-band symbol configuration period does not exceed a preset number, and the transition points include: a transition point from the first type of symbol to the second type of symbol, and a transition point from the second type of symbol to the Transition point for symbols of the first type.

15. The method according to claim 13 or 14, wherein: The constraints are determined in one of the following ways: The first node determines and notifies the second node; The second node determines and notifies the first node; determined by negotiation between the first node and the second node; is predefined between the first node and the second node.

16. The method according to claim 1, wherein: The first information is a downlink control information format.

17. The method according to claim 1, wherein: The first information is transmitted via a public physical control channel or via a physical control channel dedicated to the terminal device.

18. The method according to claim 17, wherein: In the case where the first information is transmitted through the common physical control channel, the first information in the common physical control channel is scrambled by a predefined radio network temporary identifier RNTI, wherein the predefined RNTI indicates that the function of the first information is to determine symbol attributes.

19. The method according to claim 17, wherein: In the case where the first information is transmitted through a physical control channel dedicated to the terminal device, the first information includes an eighth parameter. Setting the eighth parameter to a first value indicates that the function of the first information is to determine symbol attributes. Setting the eighth parameter to a second value indicates that the function of the first information is to schedule uplink / downlink data.

20. The method according to claim 1, wherein: The first information is a downlink control information DCI format for scheduling PDSCH, and the DCI format is scrambled by the cell radio network temporary identifier C-RNTI, and the eighth parameter is a first value, then the DCI format is not used to schedule a PDSCH or is used to schedule a PDSCH without downlink data; or, The first information is a DCI format for scheduling a PUSCH, and the DCI format is scrambled by the C-RNTI, and the eighth parameter is a first value, then the DCI format is not used to schedule a PUSCH or is used to schedule a PUSCH without uplink data.

21. The method according to claim 1, further comprising: Second information is sent to the second node, where the second information is used to indicate that the second node is allowed to modify a symbol attribute.

22. The method of claim 1, further comprising: Receive third information sent by the second node, where the third information is used to indicate that the second node supports modifying symbol attributes.

23. A signal transmission method, applied to a second node, wherein: The method comprises: First information is received from a first node, where the first information is used to determine a symbol attribute corresponding to a symbol.

24. The method according to claim 23, further comprising: Based on the symbol attribute corresponding to the symbol determined by the first information, reception or transmission of the signal to be transmitted is performed on the first transmission resource containing the symbol, wherein the first transmission resource overlaps with the transmission resource of the signal to be transmitted, and the transmission direction supported by the first transmission resource conflicts with the transmission direction of the signal to be transmitted.

25. The method of claim 23, further comprising: Based on the symbol attribute corresponding to the symbol determined by the first information, receiving or transmitting the signal to be transmitted is performed, wherein: The transmission direction of the signal to be transmitted does not conflict with the symbol attribute corresponding to the symbol determined based on the first information.

26. The method of claim 23, wherein: The signal to be transmitted for receiving or transmitting on the symbol includes at least one of the following: Physical downlink control channel PDCCH; Physical downlink shared channel PDSCH; Synchronization signal and physical broadcast channel block SSB; Physical Random Access Channel PRACH; Physical uplink control channel PUCCH; Downlink reference signal; Physical uplink shared channel PUSCH; Uplink reference signal.

27. The method according to claim 23 or 24, wherein: The symbol attributes of the symbol include a first type symbol and a second type symbol; the first type symbol is a symbol configured with a full-duplex sub-band, and the second type symbol is a symbol not configured with a full-duplex sub-band; The first type of symbol includes at least one of the following: a first type of downlink symbol, a first type of flexible symbol; The second type of symbols includes at least one of the following: a second type of downlink symbol and a second type of flexible symbol.

28. The method of claim 24, wherein: When the transmission direction of the signal to be transmitted is an uplink direction, the first transmission resource includes at least one of the following: Downlink subbands on symbols of the first type; a guard interval on the first type of symbols; Second type of symbol.

29. The method of claim 24, wherein: When the transmission direction of the signal to be transmitted is a downlink direction, the first transmission resource includes at least one of the following: Uplink subband on first type of symbols; A guard interval on the first type of symbols.

30. The method of claim 23, wherein: The first information is used to determine a symbol attribute corresponding to the symbol, including any of the following: Determine the symbolic properties of a particular symbol; Determining that a symbol attribute of the specific symbol changes; determining that a particular first-type symbol is modified to a second-type symbol; Determine to increase or decrease k first-type symbols, where k is a positive integer.

31. The method according to claim 30, wherein: The determining to increase or decrease k first-type symbols includes at least one of the following: Determine to add k first-type symbols from the end of the existing first-type symbols; Determine to add k first-type symbols from the beginning of the existing first-type symbols; Determine to reduce k first-type symbols from the end of the existing first-type symbols; Determine to reduce k first-type symbols from the beginning of the existing first-type symbols.

32. The method of claim 23, wherein: The first information includes at least one of the following parameters: a first parameter, a second parameter, a third parameter, a fourth parameter, a fifth parameter, a sixth parameter, and a seventh parameter; wherein the first parameter is used to determine a time slot, a time division duplex TDD frame structure period, or a symbol configuration period of a full-duplex subband; the second parameter is used to determine a position of a specific symbol; the third parameter is used to determine a symbol attribute of the specific symbol; the fourth parameter is used to indicate the number of first type symbols added; the fifth parameter is used to indicate an increase method; the sixth parameter is used to indicate a decrease number of first type symbols; and the seventh parameter is used to indicate a decrease method.

33. The method of claim 23, wherein: The validity of the determined symbol attribute satisfies any of the following: The validity of the determined symbolic attributes lasts until they are instructed to change again; The determined symbol attributes are only valid for this instruction; The determined symbol attributes are valid within the current TDD frame period; The determined symbol attributes are valid within the current first type symbol configuration period; The determined symbol attribute is valid within the validity period also indicated by the first information.

34. The method of claim 23, wherein: The determining of the symbol attribute corresponding to the symbol includes at least one of the following: Modify the first type of symbol into the second type of symbol; The second type of symbol is modified to the first type of symbol.

35. The method of claim 34, wherein: The modification of the first type symbol to the second type symbol is subject to at least one of the following constraints: The first type of downlink symbols are only allowed to be modified into the second type of downlink symbols; The first type flexible symbol is only allowed to be modified into the second type downlink symbol, or the first type flexible symbol is only allowed to be modified into the second type flexible symbol; The modified second type symbols in the same time slot are continuous; In the same time slot, TDD frame structure period or radio frame or symbol configuration period of the full-duplex subband, the modified second type downlink symbol is continuous with the second type downlink symbol or the second type flexible symbol configured by the uplink and downlink common configuration signaling; In the same time slot, TDD frame structure period or radio frame or symbol configuration period of a full-duplex subband, the modified second type flexible symbol is continuous with the second type downlink symbol or the second type flexible symbol configured by the uplink and downlink common configuration signaling.

36. The method of claim 34, wherein: The modification of the second type symbol to the first type symbol is subject to at least one of the following constraints: The second type of downlink symbols are only allowed to be modified into the first type of downlink symbols; The second type of flexible symbol is only allowed to be modified into the first type of flexible symbol; The first type of symbols modified in the same time slot are continuous; The modified first type downlink symbol is continuous with the original first type downlink symbol in the same time slot; The modified first type flexible symbol is continuous with the original first type flexible symbol in the same time slot; The number of transition points added within the same time slot, TDD frame structure period or full-duplex subband configuration period does not exceed a preset number, and the transition points include: a transition point from the first type of symbol to the second type of symbol, and a transition point from the second type of symbol to the first type of symbol.

37. The method according to claim 35 or 36, wherein: The constraints are determined in one of the following ways: The first node determines and notifies the second node; The second node determines and notifies the first node; determined by negotiation between the first node and the second node; is predefined between the first node and the second node.

38. The method of claim 23, wherein: The first information is a downlink control information format.

39. The method of claim 23, wherein: The first information is transmitted via a public physical control channel or via a physical control channel dedicated to the terminal device.

40. The method of claim 39, wherein: In the case where the first information is transmitted through the common physical control channel, the first information in the common physical control channel is scrambled by a predefined radio network temporary identifier RNTI, wherein the predefined RNTI indicates that the function of the first information is to determine symbol attributes.

41. The method of claim 39, wherein: In the case where the first information is transmitted through a physical control channel dedicated to the terminal device, the first information includes an eighth parameter. Setting the eighth parameter to a first value indicates that the function of the first information is to determine symbol attributes. Setting the eighth parameter to a second value indicates that the function of the first information is to schedule uplink / downlink data.

42. The method of claim 23, wherein: The first information is a downlink control information DCI format for scheduling PDSCH, and the DCI format is scrambled by the cell radio network temporary identifier C-RNTI, and the eighth parameter is a first value, then the DCI format is not used to schedule a PDSCH or is used to schedule a PDSCH without downlink data; or, The first information is a DCI format for scheduling a PUSCH, and the DCI format is scrambled by the C-RNTI, and the eighth parameter is a first value, then the DCI format is not used to schedule a PUSCH or is used to schedule a PUSCH without uplink data.

43. The method of claim 23, further comprising: Second information is received from the first node, the second information being used to indicate that the second node is allowed to modify a symbol attribute.

44. The method of claim 23, further comprising: Sending third information to the first node, where the third information is used to indicate that the second node supports modifying symbol attributes.

45. A communication device, comprising: A memory and a processor; wherein the memory and the processor are coupled; the memory is used to store instructions executable by the processor; when the processor executes the instructions, the method according to any one of claims 1 to 44 is performed.

46. ​​A computer-readable storage medium, wherein: The computer-readable storage medium stores computer instructions, and when the computer instructions are executed on a communication device, the communication device is caused to perform the method according to any one of claims 1 to 44.

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