Method, device, terminal and network side device for determining transmission direction

Abstract

The present application discloses a method, an apparatus, a terminal, and a network side device for determining a transmission direction, which belong to the technical field of communication. The method for determining a transmission direction of an embodiment of the present application includes a step (201) of a terminal determining a transmission direction corresponding to a time unit according to a first indication signaling, the transmission direction including an uplink transmission direction, a downlink transmission direction, or a flexible transmission direction, where the flexible transmission direction can be indicated as at least one of an uplink transmission direction, a downlink transmission direction, and a flexible direction of neither receiving nor transmitting.

Description

[Technical field]

[0001] (CROSS REFERENCE TO RELATED APPLICATIONS) This application claims priority to Chinese Patent Application No. 202110350934.8, filed in China on March 31, 2021, the entire contents of which are incorporated herein by reference.

[0002] The present invention relates to the technical field of communications, and in particular to a method, an apparatus, a terminal, and a network side device for determining a transmission direction. [Background technology]

[0003] In a flexible / full duplex network system, a terminal without full duplex capability can only transmit or receive at the same time, but the network side can receive and transmit at the same time, so that different terminals can transmit and receive on different frequency resources at the same time. Accordingly, the network needs to provide signaling to the terminal to configure and / or indicate the transmission directions of different frequency resources, such as downlink D, uplink U, and flexible F.

[0004] In order to coexist with adjacent channels, reduce interference to adjacent channels, and effectively coexist with legacy terminals (also called legacy UEs or UEs with versions earlier than Rel-18) and other terminals with different service requirements in the same network, different frequency resources of the same time unit are designated as uplink, downlink, or flexible, but a terminal without full duplex capability cannot determine the transmission direction of the time unit and therefore cannot perform the corresponding downlink processing or uplink transmission. Summary of the Invention [Problem to be solved by the invention]

[0005] The embodiments of the present application provide a method, apparatus, terminal and network side equipment for determining a transmission direction, which can solve the problem of how a terminal without full duplex capability determines the transmission direction of a time unit. [Means for solving the problem]

[0006] In the first aspect, The terminal determines a transmission direction corresponding to the time unit according to the first indication signaling, the transmission direction including an uplink transmission direction, a downlink transmission direction, or a flexible transmission direction; The flexible transmission direction is: Uplink transmission direction, Downlink transmission direction, A method for determining a transmission direction is provided, which can be indicated as at least one of a flexible direction in which neither reception nor transmission is performed.

[0007] In a second embodiment, The method includes the steps of: a network side device sending a first indication signaling, the first indication signaling being for determining a transmission direction corresponding to a time unit, the transmission direction including an uplink transmission direction, a downlink transmission direction, or a flexible transmission direction; The flexible transmission direction is: Uplink transmission direction, Downlink transmission direction, A method for determining a transmission direction is provided, which can be indicated as at least one of a flexible direction in which neither reception nor transmission is performed.

[0008] In a third aspect, A first determination module for determining a transmission direction corresponding to a time unit in response to a first indication signaling, the transmission direction including an uplink transmission direction, a downlink transmission direction, or a flexible transmission direction; The flexible transmission direction is: Uplink transmission direction, Downlink transmission direction, A flexible direction of transmission that can be designated as at least one of: a flexible direction of neither receiving nor transmitting;

[0009] In a fourth aspect, A first transmission module for transmitting a first instruction signaling, the first instruction signaling being for determining a transmission direction corresponding to a time unit, the transmission direction including an uplink transmission direction, a downlink transmission direction or a flexible transmission direction; The flexible transmission direction is: Uplink transmission direction, Downlink transmission direction, A flexible direction of transmission that can be designated as at least one of: a flexible direction of neither receiving nor transmitting;

[0010] In a fifth aspect, there is provided a terminal comprising a processor, a memory, and programs or commands stored in the memory and executable on the processor, the programs or commands, when executed by the processor, realizing steps of the method according to the first aspect.

[0011] In a sixth aspect, a terminal including a processor and a communication interface, the processor being adapted to determine a transmission direction corresponding to a time unit in response to a first indication signaling, the transmission direction including an uplink transmission direction, a downlink transmission direction, or a flexible transmission direction; The flexible transmission direction is: Uplink transmission direction, Downlink transmission direction, and flexible directions, neither receiving nor transmitting.

[0012] In a seventh aspect, there is provided a network side device comprising a processor, a memory, and a program or command stored in the memory and executable on the processor, the program or command realizing the steps of the method according to the second aspect when executed by the processor.

[0013] In an eighth aspect, a network side device includes a processor and a communication interface, the communication interface is used to send a first instruction signaling, the first instruction signaling is for determining a transmission direction corresponding to a time unit, and the transmission direction includes an uplink transmission direction, a downlink transmission direction, or a flexible transmission direction; The flexible transmission direction is: Uplink transmission direction, Downlink transmission direction, and flexible directions in which neither reception nor transmission is performed.

[0014] In a ninth aspect, there is provided a readable storage medium having stored thereon a program or commands which, when executed by a processor, effectuate the steps of the method according to the first aspect.

[0015] In a tenth aspect, there is provided a chip comprising a processor and a communications interface, the communications interface and the processor being coupled, the processor executing a program or command to implement the method according to the first aspect, or to implement the method according to the second aspect.

[0016] In an eleventh aspect, there is provided a computer program / program product that is stored in a non-volatile storage medium and that, when executed by at least one processor, realizes the steps of the transmission direction determination method described in the first or second aspect.

[0017] In a twelfth aspect, there is provided a communications device arranged to perform a method according to the first aspect or to perform a method according to the second aspect. Effect of the Invention

[0018] In an embodiment of the present application, the terminal determines a transmission direction corresponding to the time unit, such as an uplink transmission direction, a downlink transmission direction or a flexible transmission direction, according to the first indication signaling, so that the terminal without full duplex capability can determine the transmission direction of the time unit in the flexible duplex / full duplex system. [Brief description of the drawings]

[0019] [Figure 1] 1 shows a structural diagram of a communication system to which an embodiment of the present application can be applied; [Diagram 2] 1 shows a schematic diagram 1 of the procedure of a method for determining a transmission direction according to an embodiment of the present application. [Diagram 3] FIG. 1 shows a schematic diagram of the arrangement of the transmission direction of a frequency domain unit in an embodiment of the present application. [Figure 4] 2 shows a schematic diagram 2 of the arrangement of the transmission direction of the frequency domain unit in the embodiment of the present application. [Diagram 5] 3 shows a schematic diagram 3 of the arrangement of the transmission direction of the frequency domain unit in the embodiment of the present application. [Figure 6] 2 shows a schematic diagram 2 of the procedure of the method for determining the transmission direction according to the embodiment of the present application. [Figure 7] 1 shows a module schematic diagram of a transmission direction determining device according to an embodiment of the present application. [Figure 8] 1 shows a structural block diagram of a communication device according to an embodiment of the present application; [Figure 9] 1 shows a structural block diagram of a terminal according to an embodiment of the present application; [Figure 10] 2 shows a module schematic diagram of a transmission direction determining device according to an embodiment of the present application. [Figure 11] FIG. 2 shows a structural block diagram of a network side device according to an embodiment of the present application; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] Hereinafter, the technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application. Of course, the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art are within the scope of protection of the present application.

[0021] The terms "first", "second", etc. in the specification and claims of the present application are not intended to describe a particular order or sequence, but are intended to distinguish between similar objects. It should be understood that the terms used in this manner may be substituted for one another where appropriate, so that the embodiments of the present application may be performed in an order other than that shown or described herein. In addition, the objects distinguished by "first" and "second" are generally of one type, and the number of objects is not limited, for example, the first object may be one or more. In addition, in the specification and claims, "and / or" indicates at least one of the objects connected, and the symbol " / " generally indicates that the related objects before and after are in an "or" relationship.

[0022] It should be noted that the technology described in the embodiments of the present application is not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, and can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" in the embodiments of the present application can generally be used interchangeably, and the technology described can be used in the above systems and wireless technologies, or in other systems and wireless technologies. In the following description, for illustrative purposes, a New Radio (NR) system is described, and NR terminology is used in most of the following description, however, these techniques are applicable to systems other than NR systems, for example, 6th generation (6G) systems. th It is also applicable to 6G (Generation, 6G) communication systems.

[0023] FIG. 1 shows a structural diagram of a wireless communication system to which the embodiment of the present application can be applied. The wireless communication system includes a terminal 11 and a network side device 12. Here, the terminal 11 may be called a terminal device or a user terminal (User Equipment, UE), and the terminal 11 may be a terminal side device such as a mobile phone, a tablet computer, a laptop computer also called a notebook computer, a personal digital assistant (PDA), a personal digital assistant, a netbook, an ultra-mobile personal computer (UMPC), a mobile Internet device (MID), a wearable device or a vehicle user equipment (VUE), a pedestrian user equipment (PUE), etc., and the wearable device includes a smart watch, a bracelet, an earphone, a pair of glasses, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application. The network side device 12 may be a base station or a core network device, among which the base station is ,a access point, base transceiver station (BTS), radio base station, radio transceiver, basic service set (BSS), extended service set (ESS), B node, evolved B node (eNB), home B node, home evolved B node, WLAN access point, WiFi node, transmission / reception point ( Transmission Reception The base station may be referred to as a Relay Point (TRP) or other suitable term in the art, and the base station is not limited to a specific technical term as long as the same technical effect can be achieved. It should be noted that in the embodiments of the present application, only a base station in an NR system is taken as an example, but the specific type of the base station is not limited.

[0024] In the following, the method for determining a transmission direction provided in the embodiments of the present application will be described in detail in several embodiments and their application scenarios with reference to the drawings.

[0025] As shown in FIG. 2 , an embodiment of the present application provides a method for determining a transmission direction, which includes the following steps 201: In step 201, the terminal determines a transmission direction corresponding to a time unit according to a first indication signaling, where the transmission direction includes an uplink transmission direction, a downlink transmission direction or a flexible transmission direction. Wherein, the flexible transmission direction is: Uplink transmission direction, Downlink transmission direction, A flexible direction in which neither reception nor transmission occurs.

[0026] Specifically, the flexible transmission direction may be further indicated by the first indication signaling as an uplink transmission direction, a downlink transmission direction, or a flexible direction of neither receiving nor transmitting.

[0027] In an embodiment of the present application, the terminal is a terminal without full duplex capability in a flexible duplex / full duplex system. The time unit includes X1 time slots or X2 symbols, where X1 ≥ 1 and X2 ≥ 1. The frequency domain unit may be at least one of a subband, a bandwidth part (BWP), a resource block set (RB set), and a resource block group (RBG).

[0028] Optionally, the first indication signaling comprises: Higher layer signaling, Radio Resource Control (RRC) signaling, Dynamic signaling, A system message.

[0029] Further optionally, the system message includes at least one of full duplex uplink-downlink common configuration information and flexible duplex uplink-downlink common configuration information (XDD / TDD-UL-DL-ConfigurationCommon).

[0030] The RRC signaling includes at least one of full duplex uplink / downlink specific configuration information and flexible duplex uplink / downlink specific configuration information (XDD / TDD-UL-DL-ConfigDedicated).

[0031] In one embodiment of the present application, the downlink transmission direction (D), the uplink transmission direction (U) and the flexible transmission direction (F) that are semi-statically configured by XDD / TDD-UL-DL-ConfigurationCommon and / or XDD / TDD-UL-DL-ConfigDedicated are described as Semi-static D, Semi-static U and Semi-static F, respectively.

[0032] Semi-static downlink transmissions configured by higher layers / RRC, such as the Physical downlink control channel (PDCCH), the Physical downlink shared channel (PDSCH), the Channel State Information Reference Signal (CSI-RS), the Positioning Reference Signal (PRS), etc., are noted as RRC D.

[0033] Semi-static uplink transmissions configured by higher layers / RRC, such as Sounding Reference Signal (SRS), Physical Uplink Shared Channel (PUSCH), Physical Uplink Control Channel (PUCCH), Physical Random Access Channel (PRACH), etc., are denoted as RRC U.

[0034] D, U, or F indicated by dynamic signaling, e.g., Downlink Control Information (DCI) (which may be user-specific control signaling UE-specific DCI and / or user group-common control signaling group-common DCI), is written as Dynamic D, Dynamic U, or Dynamic F.

[0035] The transmission direction corresponding to the synchronization signal / physical broadcast channel signal block (SSB) positions (ssb-PositionsInBurst) in the system message SIB1 or the ssb-PositionsInBurst in the serving cell configuration common signaling (ServingCellConfigCommon) is written as SSB in ssb-PositionsInBurst.

[0036] The control resource set used for the Type 0-PDCCH common search space (Type 0-PDCCH CSS) configured by the PDCCH-ConfigSIB1 in the Master Information Block (MIB) is described as CORESET for Type 0-PDCCH CSS.

[0037] In an embodiment of the present application, the terminal determines a transmission direction corresponding to the time unit, such as an uplink transmission direction, a downlink transmission direction or a flexible transmission direction, according to the first indication signaling, so that the terminal without full duplex capability can determine the transmission direction of the time unit in the flexible duplex / full duplex system.

[0038] Alternatively, in an embodiment of the present application, the transmission direction corresponding to the time unit may be directly indicated via the first indication signaling, or the transmission direction corresponding to at least one frequency domain unit in the time unit may be indicated via the first indication signaling, and then the terminal may determine the transmission direction corresponding to the time unit according to the transmission direction corresponding to the at least one frequency domain unit.

[0039] The step of the terminal determining a transmission direction corresponding to the time unit based on the first indication signaling includes: The terminal determines a transmission direction corresponding to at least one frequency domain unit in a time unit according to the first indication signaling, where the transmission direction corresponding to the frequency domain unit includes an uplink transmission direction, a downlink transmission direction, or a flexible transmission direction; A terminal determines a transmission direction corresponding to the time unit according to a transmission direction corresponding to the frequency domain unit.

[0040] In an embodiment of the present application, the terminal determines a transmission direction corresponding to at least one frequency domain unit in a time unit according to the first indication signaling, the transmission direction corresponding to the frequency domain unit includes an uplink transmission direction, a downlink transmission direction or a flexible transmission direction, and determines the transmission direction corresponding to the time unit according to the transmission direction corresponding to the frequency domain unit, so that the terminal without full duplex capability can determine the transmission direction of the time unit in a flexible duplex / full duplex system.

[0041] In the embodiments of the present application, the bandwidth of a frequency band, cell, carrier, or aggregate bandwidth part (BWP) on a carrier supporting full duplex or flexible duplex is described as N_bw, and in a time unit, N_bw can be divided into at least one frequency domain unit, and the sum of the bandwidths of the at least one frequency domain unit is less than or equal to N_bw. In the following embodiments, the frequency domain unit is described by taking an RB set as an example.

[0042] As a first alternative implementation form, the step of determining a transmission direction corresponding to the time unit according to a transmission direction corresponding to the frequency domain unit by the terminal includes: The transmission direction corresponding to the frequency domain unit (here, the transmission direction corresponding to the frequency domain unit can be understood as the transmission direction corresponding to all frequency domain units on the N carriers configured for the terminal, or the transmission direction corresponding to all frequency domain units on the activated BWP) is A downlink transmission direction (Semi-static D) that is semi-statically indicated by a system message; A downlink transmission direction (Semi-static D) that is semi-statically indicated by RRC signaling; Downlink transmission (RRC D) indicated by higher layer signaling or RRC signaling; A downlink transmission direction indicated by dynamic signaling (Dynamic D); A transmission direction corresponding to the synchronization signal / physical broadcast channel signal block SSB position in system message 1 (SSB in ssb-PositionsInBurst), A transmission direction (ServingCellConfigCommon) corresponding to the SSB position indicated by the serving cell configuration common signaling; and a transmission direction corresponding to a control resource set (CORESET for Type0-PDCCH CSS) used for a first physical downlink control channel PDCCH common search space, which is Type0-PDCCH, in a master information block.

[0043] As a second alternative implementation form, the step of determining a transmission direction corresponding to the time unit according to a transmission direction corresponding to the frequency domain unit by the terminal includes: The transmission direction corresponding to the frequency domain unit (here, the transmission direction corresponding to the frequency domain unit can be understood as the transmission direction corresponding to all frequency domain units on the N carriers configured for the terminal, or the transmission direction corresponding to all frequency domain units on the activated BWP) is An uplink transmission direction (Semi-static U) that is semi-statically indicated by a system message; An uplink transmission direction (Semi-static U) that is semi-statically indicated by RRC signaling; an uplink transmission direction (RRC U) corresponding to an uplink transmission indicated by higher layer signaling or RRC signaling; and an uplink transmission direction (Dynamic U) indicated by dynamic signaling, the terminal determines that the transmission direction corresponding to the time unit is an uplink transmission direction.

[0044] As a third alternative implementation form, the step of the terminal determining a transmission direction corresponding to the time unit according to a transmission direction corresponding to the frequency domain unit includes: A transmission direction corresponding to the at least one frequency domain unit (wherein the transmission direction corresponding to the frequency domain unit can be understood as a transmission direction corresponding to all frequency domain units on N carriers configured for the terminal, or a transmission direction corresponding to all frequency domain units on an activated BWP) is: Flexible transmission direction (Semi-static F) is semi-statically indicated by system messages; Flexible transmission direction (Semi-static F) is semi-statically indicated by RRC signaling; and a flexible transmission direction (Dynamic F) indicated by dynamic signaling, the terminal determines that the transmission direction corresponding to the time unit is a flexible transmission direction when the flexible transmission direction includes at least one of the following:

[0045] As a fourth alternative implementation form, the step of the terminal determining a transmission direction corresponding to the time unit according to a transmission direction corresponding to the frequency domain unit includes: When at least one first frequency domain unit exists in the time unit and a transmission direction corresponding to a second frequency domain unit is a flexible transmission direction, the terminal determines that the transmission direction corresponding to the time unit is a downlink transmission direction; Here, the first frequency domain unit is a frequency domain unit whose corresponding transmission direction determined in response to the first indication signaling is a downlink transmission direction, and the second frequency domain unit is a frequency domain unit other than the first frequency domain unit within the time unit.

[0046] Specifically, among all RB set(s) on N carriers or on an activated BWP configured in the UE, if the transmission direction of at least one RB set in a time unit is the downlink transmission direction determined in response to the first instruction signaling, and the other RB sets are F or semi-static F determined in response to the first instruction signaling, it is determined that the transmission direction corresponding to the time unit is the downlink transmission direction.

[0047] As a fifth alternative implementation form, the step of the terminal determining a transmission direction corresponding to the time unit according to a transmission direction corresponding to the frequency domain unit includes: When at least one third frequency domain unit exists in the time unit and a transmission direction corresponding to a fourth frequency domain unit is a flexible transmission direction, the terminal determines that the transmission direction corresponding to the time unit is an uplink transmission direction; Here, the third frequency domain unit is a frequency domain unit whose corresponding transmission direction determined in response to the first indication signaling is an uplink transmission direction, and the fourth frequency domain unit is a frequency domain unit other than the third frequency domain unit within the time unit.

[0048] Specifically, among all RB set(s) on N carriers or on an activated BWP configured in the UE, if the transmission direction of at least one RB set in a time unit is the uplink transmission direction determined in response to the first instruction signaling, and the other RB sets are F or semi-static F determined in response to the first instruction signaling, it is determined that the transmission direction corresponding to the time unit is the uplink transmission direction.

[0049] As a sixth alternative implementation form, the step of the terminal determining a transmission direction corresponding to the time unit according to a transmission direction corresponding to the frequency domain unit includes: The method includes a step of, when the transmission direction of any two frequency domain units in the time unit determined according to a first instruction signaling is a first preset combined transmission direction, the terminal determines a transmission direction corresponding to the time unit according to a preset rule.

[0050] Here, the preset rules include at least one of the following items 1 to 10.

[0051] Term 1: Determine the transmission direction corresponding to the time unit according to the transmission direction corresponding to the frequency domain unit with the smallest index within the time unit.

[0052] Term 2: A transmission direction corresponding to the time unit is determined according to a transmission direction corresponding to a reference frequency domain unit within the time unit.

[0053] Clause 3: determine a transmission direction corresponding to the time unit according to a relationship between a first numerical value, a second numerical value, and a third numerical value, where the first numerical value is the number of frequency domain units in the time unit whose corresponding transmission direction is an uplink transmission direction, the second numerical value is the number of frequency domain units in the time unit whose corresponding transmission direction is a downlink transmission direction, and the third numerical value is the number of frequency domain units in the time unit whose corresponding transmission direction is a flexible transmission direction.

[0054] Clause 4: The preset transmission direction includes a downlink transmission direction, an uplink transmission direction or a flexible transmission direction by default.

[0055] Section 5: Determine the incorrect network configuration.

[0056] Clause 6: The terminal autonomously determines the transmission direction corresponding to the time unit.

[0057] Clause 7: Determine the transmission direction corresponding to the time unit according to the dynamic signaling on the target carrier.

[0058] Clause 8: Determining the transmission direction corresponding to the time unit according to the dynamic signaling on the activated bandwidth part BWP on the target carrier.

[0059] Clause 9: Depending on the target information of the signal waiting to be processed on the target carrier, a transmission direction corresponding to said time unit is determined.

[0060] Clause 10: Determine the transmission direction corresponding to said time unit according to the target information of the pending signals on the activated BWP on the target carrier.

[0061] Here, the target information includes at least one of the priority of the signal, the content of the signal, the channel on which the signal exists, and the magnitude of the signal.

[0062] Here, the target carriers are all carriers in the time unit (eg, N carriers assigned to a terminal), or the first carrier in the time unit.

[0063] Further optionally, the first carrier comprises: the carrier with the highest or lowest index among all active carriers; A reference carrier that is configured or indicated by the network; and a carrier in a first carrier set of the time unit, the carrier having a maximum or minimum index and a transmission direction of uplink or downlink, the first carrier set being a set of active carriers in the time unit other than the carrier having a transmission direction of flexible transmission direction.

[0064] Further optionally, the first preset combined transmission direction is: downlink and uplink transmission directions; A semi-statically directed downlink transmission direction and a dynamically directed flexible transmission direction; A semi-statically instructed uplink transmission direction and a dynamically instructed flexible transmission direction; A transmission direction corresponding to the SSB position in the system message 1 and a dynamically indicated flexible transmission direction; A transmission direction corresponding to an SSB position indicated by a serving cell configuration common signaling and a dynamically indicated flexible transmission direction; The transmission direction in the master information block corresponds to a control resource set used for the first PDCCH common search space and a dynamically indicated flexible transmission direction.

[0065] In the embodiment of the present application, the first preset combined transmission direction can be specifically referred to in Table 1.

[0066] Table 1 TIFF0007627359000001.tif67157

[0067] Regarding the above item 1, for carrier X on frequency f1, from time unit S#0 to time unit S#6, the arrangement and indication of the transmission direction of the four RB sets (RB set#0 to RB set#3) in each time unit are as shown in FIG. 3, and according to the transmission direction of the frequency domain unit with the smallest index, it is determined that the transmission direction of time unit S#3 is D, the transmission direction of time unit S#4 is F, the transmission direction of time unit S#5 is F, and the transmission direction of time unit S#6 is U.

[0068] Regarding the second term above, the reference frequency domain unit may be one frequency domain unit configured and / or indicated by the network, e.g., the Kth RB set, where K is the maximum or minimum index in N_bw, or K is the minimum or maximum index of the RB set(s) including the initial DL / UL BWP, or either index. Alternatively, the reference frequency domain unit is a frequency domain unit determined within the time unit in an RB set other than the one whose transmission direction is F, for example, a frequency domain unit with a maximum or minimum index.

[0069] As shown in Fig. 3, if it is assumed that the reference frequency domain unit is RB set #2, it is determined that the transmission direction of time unit S #3 is U, the transmission direction of time unit S #4 is U, the transmission direction of time unit S #5 is D, and the transmission direction of time unit S #6 is U. If it is assumed that the reference frequency domain unit is the RB set with the smallest index among RB sets other than those whose transmission direction is F, it is determined that the transmission direction of time unit S #3 is D, the transmission direction of time unit S #4 is D, the transmission direction of time unit S #5 is U, and the transmission direction of time unit S #6 is U.

[0070] Regarding the above third clause, assuming that the first value is denoted as T_U, the second value is denoted as T_D, and the third value is denoted as T_F, if T_D>T_U and T_D≧T_F, the transmission direction of the time unit is determined to be D; if T_U>T_D and T_U≧T_F, the transmission direction of the time unit is determined to be U; if T_F>T_D and T_F>T_U, the transmission direction of the time unit is determined to be F; if T_D=T_U, it is determined to be an incorrect network configuration or instruction, or the terminal autonomously determines the transmission direction.

[0071] As shown in Fig. 3, the transmission direction corresponding to the time unit is determined according to the relationship between the first numerical value, the second numerical value, and the third numerical value. That is, it is assumed that the transmission direction corresponding to the time unit is determined according to the transmission direction corresponding to the maximum numerical value. For example, in time unit S#3, T_D=2, T_F=1, T_U=1, so the transmission direction is D. In time unit S#4, T_D=2, T_F=1, T_U=1, so the transmission direction is D. In time unit S#5, T_D=1, T_F=1, T_U=2, so the transmission direction is U. In time unit S#6, T_D=1, T_F=0, T_U=3, so the transmission direction is U.

[0072] Regarding item 4 above, for combinations 1, 2, and 4 in Table 1 above, U can be the default transmission direction, and for combinations 3 and 4 in Table 1 above, F can be the default.

[0073] Regarding the above items 7 and 8, as shown in Fig. 3, the transmission direction of time unit S#3 is D indicated by the terminal specific DCI or common DCI, the transmission direction of time unit S#4 is D indicated by the terminal specific DCI or common DCI, the transmission direction of time unit S#5 is F indicated by the terminal specific DCI or common DCI, and the transmission direction of time unit S#6 is U indicated by the terminal specific DCI or common DCI. Note that when multiple terminal specific dynamic signaling or common dynamic signaling exists simultaneously, the transmission direction is determined according to the latest dynamic signaling.

[0074] Regarding the above items 9 and 10, assuming that the transmission direction corresponding to the time unit is determined according to the priority of the signal, the target carrier X is determined, and then the transmission direction corresponding to the time unit is determined according to the priority of the signal waiting to be processed on the target carrier X. Assume that the first priority downlink data / control information / reference signal>the second or first priority uplink data / control information / reference signal, or the first priority uplink data / control information / reference signal>the second or first priority downlink data / control information / reference signal, for example, SSB>PRACH>PDCCH>PUCCH>uplink data including uplink control information (UCI)>PDSCH>uplink data not including uplink control information (UCI). As shown in FIG. 3, the signal waiting to be processed on the RB set#2 of the time unit S#3 is the allocation grant PUSCH, and the signal waiting to be processed on the RB set#3 of the time unit S#3 is SSB, and therefore the transmission direction corresponding to the time unit S#3 is determined to be D. The signal waiting for processing on RB set #2 of time unit S #4 is a PUSCH with the first priority, and the signal waiting for processing on RB set #3 of time unit S #4 is a PDSCH with the first priority, so the transmission direction corresponding to time unit S #4 is determined to be D. The signal waiting for processing on RB set #2 of time unit S #5 is a PDSCH with the second priority, and the signal waiting for processing on RB set #3 of time unit S #5 is a PUSCH with the first priority, so the transmission direction corresponding to time unit S #5 is determined to be U. The signal waiting for processing on RB set #2 of time unit S #6 is a PDSCH, and the signal waiting for processing on RB set #3 of time unit S #6 is a PUCCH, so the transmission direction corresponding to time unit S #6 is determined to be U. 6 It is determined that the transmission direction corresponding to is U.

[0075] Alternatively, the transmission direction corresponding to the time unit is determined according to the target information of the signals waiting to be processed on all carriers, and the transmission direction corresponding to the time unit S#3 is determined according to the priority of the signals waiting to be processed on all RB sets in the time unit S#3 on carrier CC#0 and carrier CC#1, as shown in Fig. 4. Assuming that the transmission priority of the signals waiting to be processed on RB set#3 in the time unit S#3 of carrier CC#0 is the highest, the transmission direction corresponding to the time unit S#3 is determined to be D, and the determination method for other time units is similar, and detailed description is omitted here.

[0076] As a seventh alternative implementation form, the step of determining a transmission direction corresponding to the time unit according to a transmission direction corresponding to the at least one frequency domain unit by the terminal includes: determining that the transmission direction corresponding to the time unit is an uplink transmission direction when the transmission direction of any two frequency domain units in the time unit determined according to the first indication signaling is a second preset combined transmission direction; When the transmission direction of any two frequency domain units in the time unit determined according to the first instruction signaling is a third preset combined transmission direction, if the time difference between the first symbol and the second symbol is equal to or greater than a terminal processing time, determine that the transmission direction corresponding to the time unit is a downlink transmission direction or a flexible transmission direction; otherwise, determine that the transmission direction corresponding to the time unit is an uplink transmission direction, or determine that the network configuration is incorrect; and determining that the transmission direction corresponding to the time unit is a downlink transmission direction or a flexible transmission direction when the transmission direction of any two frequency domain units in the time unit determined according to the first instruction signaling is a third preset combined transmission direction, wherein a time difference between the first symbol and the second symbol arranged by the network is equal to or greater than a terminal processing time.

[0077] Here, the second preset combination transmission direction (specifically, see combination 1 and combination 2 in Table 2) is a semi-statically instructed downlink transmission direction and a dynamically instructed uplink transmission direction or a flexible transmission direction; The downlink transmission direction corresponds to a downlink transmission indicated by higher layer signaling or RRC signaling, and the uplink transmission direction is dynamically indicated or a flexible transmission direction.

[0078] The third preset combination transmission direction (specifically, see combination 3 and combination 4 in Table 2) is A semi-statically instructed uplink transmission direction and a dynamically instructed downlink transmission direction or a flexible transmission direction; The direction of transmission includes at least one of an uplink transmission direction corresponding to an uplink transmission indicated by higher layer signaling or RRC signaling, and a dynamically indicated downlink transmission direction or a flexible transmission direction.

[0079] The first symbol is a start symbol of uplink transmission of a first frequency domain unit of any two frequency domain units, and the second symbol is a last symbol of downlink dynamic signaling of a second frequency domain unit of any two frequency domain units, and the downlink dynamic signaling is for indicating downlink transmission or flexible transmission.

[0080] Table 2 TIFF0007627359000002.tif47135

[0081] As shown in FIG. 5, assuming that in time unit S#0, the transmission directions corresponding to RB set #0-3 are RRC D, Dynamic F, Dynamic F, and Semi-static D, respectively, and in time unit S#1, the transmission directions corresponding to RB set #0-3 are RRC D, Dynamic U, Dynamic U, and Semi-static D, respectively, it is determined that the transmission direction corresponding to time unit S#0 is F and the transmission direction corresponding to time unit S#1 is U.

[0082] As an eighth alternative implementation form, the step of determining a transmission direction corresponding to the time unit according to a transmission direction corresponding to the at least one frequency domain unit by the terminal includes: A transmission direction corresponding to any frequency domain unit within the time unit is a transmission direction corresponding to the SSB transmission opportunity indicated by the SSB position; a transmission direction corresponding to a transmission time indicated by the SSB measurement timing configuration (SS / PBCH block Measurement Timing Configuration, SMTC); a transmission direction corresponding to the downlink measurement reference signal; a transmission direction corresponding to a valid tracking reference signal; and a transmission direction corresponding to a control resource set of a first physical downlink control channel (PDCCH) common search space, when the transmission direction corresponding to the time unit is at least one of: a transmission direction corresponding to the control resource set of a first physical downlink control channel (PDCCH) common search space; and

[0083] where the downlink measurement reference signal is Radio Link Monitoring (RLM) signal; A link recovery signal; A radio resource management (RRM) signal; and L1 Reference Signal Received Power (L-RSRP).

[0084] The valid tracking reference signal may be configured by at least one of system information, higher layer signaling, and dynamic signaling, and may be, for example, an early indication by paging or a PDCCH indication by paging.

[0085] In an embodiment of the present application, the terminal determines a transmission direction corresponding to the time unit, such as an uplink transmission direction, a downlink transmission direction or a flexible transmission direction, according to the first indication signaling, so that the terminal without full duplex capability can determine the transmission direction of the time unit in the flexible duplex / full duplex system.

[0086] As shown in FIG. 6 , an embodiment of the present application provides a method for determining a transmission direction, which includes the following steps 601 . In step 601, a network side device sends a first indication signaling, the first indication signaling is for determining a transmission direction corresponding to a time unit, and the transmission direction includes an uplink transmission direction, a downlink transmission direction or a flexible transmission direction. Here, the flexible transmission direction is: Uplink transmission direction, Downlink transmission direction, and flexible directions that neither receive nor transmit.

[0087] Optionally, the first indication signaling comprises: Higher layer signaling, Radio Resource Control (RRC) signaling, Dynamic signaling, A system message.

[0088] Optionally, the system message includes at least one of full duplex uplink and downlink common configuration information and flexible duplex uplink and downlink common configuration information.

[0089] Optionally, the RRC signaling includes at least one of full duplex uplink / downlink specific configuration information and flexible duplex uplink / downlink specific configuration information.

[0090] The first indication signaling has been described in detail in the terminal side embodiment, and a detailed description thereof will be omitted here.

[0091] In the method for determining a transmission direction in the embodiment of the present application, a network side device sends a first indication signaling, and the first indication signaling is for determining a transmission direction corresponding to a time unit, so that a terminal without full duplex capability can determine the transmission direction of a time unit in a flexible duplex / full duplex system.

[0092] It should be noted that the execution body of the method for determining the transmission direction provided in the embodiment of the present application may be a device for determining the transmission direction, or a control module for executing the method for determining the transmission direction in the device for determining the transmission direction. In the embodiment of the present application, the device for determining the transmission direction executes the method for determining the transmission direction, and the device for determining the transmission direction provided in the embodiment of the present application is described.

[0093] As shown in FIG. 7, an embodiment of the present application further provides a transmission direction determining apparatus 700, which includes: a first determining module 701 for determining a transmission direction. The first determining module 701 is used for determining, according to the first indication signaling, a transmission direction corresponding to a time unit, where the transmission direction includes an uplink transmission direction, a downlink transmission direction or a flexible transmission direction. Wherein, the flexible transmission direction is: Uplink transmission direction, Downlink transmission direction, A flexible direction in which neither reception nor transmission occurs.

[0094] Optionally, the device of the present application comprises: The device further includes a first receiving module for receiving the first indication signaling.

[0095] Optionally, the first determination module: a first determination sub-module for determining a transmission direction corresponding to at least one frequency domain unit in a time unit according to a first indication signaling, where the transmission direction corresponding to the frequency domain unit includes an uplink transmission direction, a downlink transmission direction, or a flexible transmission direction; and a second determining sub-module for determining a transmission direction corresponding to the time unit according to a transmission direction corresponding to the frequency domain unit.

[0096] Optionally, the first indication signaling comprises: Higher layer signaling, Radio Resource Control (RRC) signaling, Dynamic signaling, A system message.

[0097] Optionally, the system message includes at least one of full duplex uplink and downlink common configuration information and flexible duplex uplink and downlink common configuration information.

[0098] Optionally, the RRC signaling includes at least one of full duplex uplink / downlink specific configuration information and flexible duplex uplink / downlink specific configuration information.

[0099] Optionally, the second determining sub-module determines whether the transmission direction corresponding to the frequency domain unit is: A downlink transmission direction that is semi-statically indicated by a system message; a downlink transmission direction that is semi-statically indicated by RRC signaling; and downlink transmission indicated by higher layer signaling or RRC signaling; a downlink transmission direction indicated by dynamic signaling; and A transmission direction corresponding to the synchronization signal / physical broadcast channel signal block SSB position in system message 1; a transmission direction corresponding to an SSB position indicated by a serving cell configuration common signaling; and a transmission direction corresponding to a control resource set used for the first physical downlink control channel (PDCCH) common search space in the master information block.

[0100] Optionally, the second determining sub-module determines whether the transmission direction corresponding to the frequency domain unit is: An uplink transmission direction that is semi-statically indicated by a system message; an uplink transmission direction that is semi-statically indicated by RRC signaling; and an uplink transmission direction corresponding to an uplink transmission indicated by higher layer signaling or RRC signaling; and an uplink transmission direction indicated by dynamic signaling, the transmission direction corresponding to the time unit is used to determine that the transmission direction is an uplink transmission direction.

[0101] Optionally, the second determining sub-module determines whether the transmission direction corresponding to the frequency domain unit is: Flexible transmission direction semi-statically indicated by system messages; Flexible transmission direction semi-statically indicated by RRC signaling; and a flexible transmission direction indicated by dynamic signaling, the flexible transmission direction corresponding to the time unit is used to determine that the transmission direction is a flexible transmission direction.

[0102] Optionally, the second determination submodule is used to determine that the transmission direction corresponding to the time unit is a downlink transmission direction when there is at least one first frequency domain unit in the time unit and the transmission direction corresponding to the second frequency domain unit is a flexible transmission direction; Here, the first frequency domain unit is a frequency domain unit whose corresponding transmission direction determined in response to the first indication signaling is a downlink transmission direction, and the second frequency domain unit is a frequency domain unit other than the first frequency domain unit within the time unit.

[0103] Optionally, the second determination submodule is used to determine that the transmission direction corresponding to the time unit is an uplink transmission direction when there is at least one third frequency domain unit in the time unit and the transmission direction corresponding to the fourth frequency domain unit is a flexible transmission direction; Here, the third frequency domain unit is a frequency domain unit whose corresponding transmission direction determined in response to the first indication signaling is an uplink transmission direction, and the fourth frequency domain unit is a frequency domain unit other than the third frequency domain unit within the time unit.

[0104] Optionally, the second determination submodule is used to determine a transmission direction corresponding to the time unit according to a preset rule when the transmission direction of any two frequency domain units in the time unit determined according to the first instruction signaling is a first preset combined transmission direction; Here, the preset rule is: determining a transmission direction corresponding to the time unit according to a transmission direction corresponding to a frequency domain unit having a smallest index within the time unit; determining a transmission direction corresponding to the time unit according to a transmission direction corresponding to a reference frequency domain unit in the time unit; determining a transmission direction corresponding to the time unit according to a relationship between a first numerical value, which is the number of frequency domain units whose corresponding transmission direction in the time unit is an uplink transmission direction, a second numerical value, which is the number of frequency domain units whose corresponding transmission direction in the time unit is a downlink transmission direction, and a third numerical value, which is the number of frequency domain units whose corresponding transmission direction in the time unit is a flexible transmission direction; A preset transmission direction includes a downlink transmission direction, an uplink transmission direction, or a flexible transmission direction by default; Determining an incorrect network configuration; A terminal autonomously determines a transmission direction corresponding to a time unit; determining a transmission direction corresponding to a time unit in response to dynamic signaling on the target carrier; determining a transmission direction corresponding to a time unit in response to dynamic signaling on an activated bandwidth part BWP on the target carrier; determining a transmission direction corresponding to said time unit according to target information of a signal waiting to be processed on a target carrier; determining a transmission direction corresponding to the time unit according to target information of a pending signal on an activated BWP on a target carrier; Wherein, the target information includes at least one of a priority of a signal, a content of a signal, a channel on which the signal exists, and a signal size; The target carriers are all carriers within the time unit or the first carrier within the time unit.

[0105] Optionally, the first carrier comprises: the carrier with the highest or lowest index among all active carriers; A reference carrier that is configured or indicated by the network; and a carrier in a first carrier set of the time unit, the carrier having a maximum or minimum index and a transmission direction of uplink or downlink, the first carrier set being a set of active carriers in the time unit other than the carrier having a transmission direction of flexible transmission direction.

[0106] Optionally, the first preset combined transmission direction is: downlink and uplink transmission directions; A semi-statically directed downlink transmission direction and a dynamically directed flexible transmission direction; A semi-statically instructed uplink transmission direction and a dynamically instructed flexible transmission direction; A transmission direction corresponding to the SSB position in the system message 1 and a dynamically indicated flexible transmission direction; A transmission direction corresponding to an SSB position indicated by a serving cell configuration common signaling and a dynamically indicated flexible transmission direction; The transmission direction in the master information block corresponds to a control resource set used for the first PDCCH common search space and a dynamically indicated flexible transmission direction.

[0107] Optionally, the second determination submodule: determining that the transmission direction corresponding to the time unit is an uplink transmission direction when the transmission direction of any two frequency domain units in the time unit determined according to the first indication signaling is a second preset combined transmission direction; When the transmission direction of any two frequency domain units in the time unit determined according to the first instruction signaling is a third preset combined transmission direction, if the time difference between the first symbol and the second symbol is equal to or greater than a terminal processing time, determine that the transmission direction corresponding to the time unit is a downlink transmission direction or a flexible transmission direction; otherwise, determine that the transmission direction corresponding to the time unit is an uplink transmission direction, or determine that the network configuration is incorrect; and determining that the transmission direction corresponding to the time unit is a downlink transmission direction or a flexible transmission direction when the transmission direction determined according to the first instruction signaling of any two frequency domain units in the time unit is a third preset combined transmission direction, wherein the time difference between the first symbol and the second symbol arranged by the network is equal to or greater than the terminal processing time.

[0108] Here, the second preset combined transmission direction is: a semi-statically instructed downlink transmission direction and a dynamically instructed uplink transmission direction or a flexible transmission direction; The downlink transmission direction corresponds to a downlink transmission indicated by higher layer signaling or RRC signaling, and the uplink transmission direction is dynamically indicated or a flexible transmission direction.

[0109] The third preset combination transmission direction is: A semi-statically instructed uplink transmission direction and a dynamically instructed downlink transmission direction or a flexible transmission direction; The direction of transmission includes at least one of an uplink transmission direction corresponding to an uplink transmission indicated by higher layer signaling or RRC signaling, and a dynamically indicated downlink transmission direction or a flexible transmission direction.

[0110] The first symbol is the start symbol of uplink transmission of a first frequency domain unit of any two frequency domain units, and the second symbol is the last symbol of downlink transmission or flexible transmission of a second frequency domain unit of any two frequency domain units.

[0111] Optionally, the second determining submodule determines whether a transmission direction corresponding to any frequency domain unit in the time unit is: a transmission direction corresponding to the SSB transmission opportunity indicated by the SSB position; a transmission direction corresponding to a transmission time dictated by the SSB measurement timing arrangement; a transmission direction corresponding to the downlink measurement reference signal; a transmission direction corresponding to a valid tracking reference signal; and a transmission direction corresponding to a control resource set of a first physical downlink control channel (PDCCH) common search space, the terminal determines that the transmission direction corresponding to the time unit is a downlink transmission direction and is used to perform a corresponding downlink operation.

[0112] In the device of the embodiment of the present application, the terminal determines a transmission direction corresponding to the time unit, such as an uplink transmission direction, a downlink transmission direction or a flexible transmission direction, according to the first indication signaling, so that the terminal without full duplex function can determine the transmission direction of the time unit in the flexible duplex / full duplex system.

[0113] The transmission direction determination device in the embodiment of the present application may be a device, a device with an operating system, or an electronic device, or may be a component, integrated circuit, or chip in a terminal. The device or electronic device may be a portable terminal or a non-portable terminal. For example, the portable terminal may include, but is not limited to, the types of terminals 11 listed above, and the non-portable terminal may be a server, a network attached storage (NAS), a personal computer (PC), a television (TV), an automated teller machine or a kiosk, etc., and is not specifically limited in the embodiment of the present application.

[0114] The apparatus provided in the embodiment of the present application can realize each step realized in the method embodiment of Figures 2 to 5, and can achieve the same technical effects, and detailed description will be omitted here to avoid duplication.

[0115] Optionally, as shown in FIG. 8, the embodiment of the present application further provides a communication device 800, which includes a processor 801, a memory 802, and a program or command stored in the memory 802 and executable by the processor 801. For example, when the communication device 800 is a terminal, when the program or command is executed by the processor 801, each process of the embodiment of the transmission direction determination method applied to the terminal described above is realized, and the same technical effect can be achieved. When the communication device 800 is a network side device, when the program or command is executed by the processor 801, each process of the embodiment of the transmission direction determination method applied to the network side device described above is realized, and the same technical effect can be achieved. To avoid duplication, detailed description is omitted here.

[0116] An embodiment of the present application further provides a terminal, the terminal including: a processor and a communication interface, the processor is used to determine, according to the first indication signaling, a transmission direction corresponding to a time unit, the transmission direction including an uplink transmission direction, a downlink transmission direction or a flexible transmission direction; Wherein, the flexible transmission direction is: Uplink transmission direction, Downlink transmission direction, A flexible direction in which neither reception nor transmission occurs.

[0117] The embodiment of the terminal corresponds to the above-mentioned method embodiment of the terminal side, and each implementation process and realization form of the above-mentioned method embodiment can be applied to the embodiment of the terminal, and can achieve the same technical effect. Specifically, Figure 9 is a hardware structure schematic diagram of a terminal for implementing the embodiment of the present application, and the terminal 900 includes at least some elements such as, but not limited to, a high frequency unit 901, a network module 902, an audio output unit 903, an input unit 904, a sensor 905, a display unit 906, a user input unit 907, an interface unit 908, a memory 909 and a processor 910.

[0118] Those skilled in the art can understand that the terminal 900 may further include a power source (e.g., a battery) for powering each component, and the power source may be logically connected to the processor 910 through a power management system, thus realizing functions such as charge / discharge management and power consumption management through the power management system. The structure of the terminal shown in FIG. 9 is not intended to limit the terminal, and the terminal may include more or fewer components than those shown, or a combination of some components, or a different component arrangement, and detailed descriptions thereof will be omitted here.

[0119] It should be understood that in the embodiment of the present application, the input unit 904 may include a graphics processing unit (GPU) 9041 for processing image data of static or video captured by an image capture device (e.g., a camera) in a video capture mode or an image capture mode, and a microphone 9042. The display unit 906 may include a display panel 9061, which may be arranged in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 907 includes a touch panel 9071 and other input devices 9072. The touch panel 9071 is also called a touch screen. The touch panel 9071 may include two parts: a touch detection device and a touch controller. The other input devices 9072 may include, but are not limited to, a physical keyboard, a function button (e.g., a volume control button, a switch button, etc.), a trackball, a mouse, and a control lever, and detailed description thereof will be omitted here.

[0120] In the embodiment of the present application, the high frequency unit 901 receives downlink data from the network side device, processes the data in the processor 910, and transmits uplink data to the network side device. Typically, the high frequency unit 901 includes, but is not limited to, an antenna, at least one amplifier, a receiver-transmitter, a coupler, a low-noise amplifier, a duplexer, etc.

[0121] The memory 909 can be used to store software programs or commands and various data. The memory 909 may mainly include an area for storing programs or commands and a data storage area, which can store an operating system, applications or commands required for at least one function (e.g., audio playback function, image playback function, etc.). The memory 909 may also include a high-speed random access memory or a non-volatile memory, among which the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. For example, at least one magnetic disk storage device, a flash memory device, or other non-volatile solid-state storage device may be included.

[0122] The processor 910 may include one or more processing units, and may selectively integrate an application processor that mainly processes an operating system, a user interface, and applications or commands, etc., and a modem processor that mainly processes wireless communication, such as a baseband processor, in the processor 910. It is understandable that the modem processor may not be integrated into the processor 910.

[0123] The processor 910 is used to determine, in response to the first indication signaling, a transmission direction corresponding to a time unit, the transmission direction including an uplink transmission direction, a downlink transmission direction, or a flexible transmission direction; Wherein, the flexible transmission direction is: Uplink transmission direction, Downlink transmission direction, A flexible direction in which neither reception nor transmission occurs.

[0124] Optionally, the processor 910 is further used to determine a transmission direction corresponding to at least one frequency domain unit in a time unit in response to the first instruction signaling, the transmission direction corresponding to the frequency domain unit including an uplink transmission direction, a downlink transmission direction or a flexible transmission direction, and to determine the transmission direction corresponding to the time unit in response to the transmission direction corresponding to the frequency domain unit.

[0125] Optionally, the first indication signaling comprises: Higher layer signaling, Radio Resource Control (RRC) signaling, Dynamic signaling, A system message.

[0126] Optionally, the system message includes at least one of full duplex uplink and downlink common configuration information and flexible duplex uplink and downlink common configuration information.

[0127] Optionally, the RRC signaling includes at least one of full duplex uplink / downlink specific configuration information and flexible duplex uplink / downlink specific configuration information.

[0128] Optionally, the processor 910 is further adapted to determine whether a transmission direction corresponding to the frequency domain unit is: A downlink transmission direction that is semi-statically indicated by a system message; a downlink transmission direction that is semi-statically indicated by RRC signaling; and downlink transmission indicated by higher layer signaling or RRC signaling; a downlink transmission direction indicated by dynamic signaling; and A transmission direction corresponding to the synchronization signal / physical broadcast channel signal block SSB position in system message 1; a transmission direction corresponding to an SSB position indicated by a serving cell configuration common signaling; and a transmission direction corresponding to a control resource set used for the first physical downlink control channel PDCCH common search space in the master information block, the transmission direction corresponding to the time unit is used by the terminal to determine that the transmission direction corresponding to the time unit is a downlink transmission direction.

[0129] Optionally, the processor 910 is further adapted to determine whether a transmission direction corresponding to the frequency domain unit is: An uplink transmission direction that is semi-statically indicated by a system message; an uplink transmission direction that is semi-statically indicated by RRC signaling; and an uplink transmission direction corresponding to an uplink transmission indicated by higher layer signaling or RRC signaling; and an uplink transmission direction indicated by dynamic signaling, the time unit is used by the terminal to determine that the transmission direction corresponding to the time unit is an uplink transmission direction.

[0130] Optionally, the processor 910 is further adapted to determine whether a transmission direction corresponding to the frequency domain unit is: Flexible transmission direction semi-statically indicated by system messages; Flexible transmission direction semi-statically indicated by RRC signaling; and a flexible transmission direction indicated by dynamic signaling, the flexible transmission direction is used by the terminal to determine that the transmission direction corresponding to the time unit is a flexible transmission direction.

[0131] Optionally, the processor 910 is further used by the terminal to determine that the transmission direction corresponding to the time unit is a downlink transmission direction when there is at least one first frequency domain unit in the time unit and the transmission direction corresponding to the second frequency domain unit is a flexible transmission direction; Here, the first frequency domain unit is a frequency domain unit whose corresponding transmission direction determined in response to the first indication signaling is a downlink transmission direction, and the second frequency domain unit is a frequency domain unit other than the first frequency domain unit within the time unit.

[0132] Optionally, the processor 910 is further used by the terminal to determine that the transmission direction corresponding to the time unit is an uplink transmission direction when there is at least one third frequency domain unit in the time unit and the transmission direction corresponding to the fourth frequency domain unit is a flexible transmission direction; Here, the third frequency domain unit is a frequency domain unit whose corresponding transmission direction determined in response to the first indication signaling is an uplink transmission direction, and the fourth frequency domain unit is a frequency domain unit other than the third frequency domain unit within the time unit.

[0133] Optionally, the processor 910 is further used by a terminal to determine a transmission direction corresponding to the time unit according to a preset rule when a transmission direction of any two frequency domain units in the time unit determined according to a first instruction signaling is a first preset combined transmission direction; Here, the preset rule is: determining a transmission direction corresponding to the time unit according to a transmission direction corresponding to a frequency domain unit having a smallest index within the time unit; determining a transmission direction corresponding to the time unit according to a transmission direction corresponding to a reference frequency domain unit in the time unit; determining a transmission direction corresponding to the time unit according to a relationship between a first value, which is the number of frequency domain units whose corresponding transmission direction in the time unit is an uplink transmission direction, a second value, which is the number of frequency domain units whose corresponding transmission direction in the time unit is a downlink transmission direction, and a third value, which is the number of frequency domain units whose corresponding transmission direction in the time unit is a flexible transmission direction; A preset transmission direction includes a downlink transmission direction, an uplink transmission direction, or a flexible transmission direction by default; Determining an incorrect network configuration; A terminal autonomously determines a transmission direction corresponding to a time unit; determining a transmission direction corresponding to a time unit in response to dynamic signaling on the target carrier; determining a transmission direction corresponding to a time unit in response to dynamic signaling on an activated bandwidth part BWP on the target carrier; determining a transmission direction corresponding to said time unit according to target information of a signal waiting to be processed on a target carrier; determining a transmission direction corresponding to the time unit according to target information of a pending signal on an activated BWP on a target carrier; Wherein, the target information includes at least one of a priority of a signal, a content of a signal, a channel on which the signal exists, and a signal size; The target carriers are all carriers within the time unit or the first carrier within the time unit.

[0134] Optionally, the first carrier comprises: the carrier with the highest or lowest index among all active carriers; A reference carrier that is configured or indicated by the network; and a carrier in a first carrier set of the time unit, the carrier having a maximum or minimum index and a transmission direction of uplink or downlink, the first carrier set being a set of active carriers in the time unit other than the carrier having a transmission direction of flexible transmission direction.

[0135] Optionally, the first preset combined transmission direction is: downlink and uplink transmission directions; A semi-statically directed downlink transmission direction and a dynamically directed flexible transmission direction; A semi-statically instructed uplink transmission direction and a dynamically instructed flexible transmission direction; A transmission direction corresponding to the SSB position in the system message 1 and a dynamically indicated flexible transmission direction; A transmission direction corresponding to an SSB position indicated by a serving cell configuration common signaling and a dynamically indicated flexible transmission direction; The transmission direction in the master information block corresponds to a control resource set used for the first PDCCH common search space and a dynamically indicated flexible transmission direction.

[0136] Optionally, the processor 910 further comprises: determining that the transmission direction corresponding to the time unit is an uplink transmission direction when the transmission direction of any two frequency domain units in the time unit determined according to the first indication signaling is a second preset combined transmission direction; When the transmission direction of any two frequency domain units in the time unit determined according to the first instruction signaling is a third preset combined transmission direction, if the time difference between the first symbol and the second symbol is equal to or greater than a terminal processing time, determine that the transmission direction corresponding to the time unit is a downlink transmission direction or a flexible transmission direction; otherwise, determine that the transmission direction corresponding to the time unit is an uplink transmission direction, or determine that the network configuration is incorrect; and determining that the transmission direction corresponding to the time unit is a downlink transmission direction or a flexible transmission direction when the transmission direction determined according to the first instruction signaling of any two frequency domain units in the time unit is a third preset combined transmission direction, wherein the time difference between the first symbol and the second symbol arranged by the network is equal to or greater than the terminal processing time.

[0137] Here, the second preset combined transmission direction is: a semi-statically instructed downlink transmission direction and a dynamically instructed uplink transmission direction or a flexible transmission direction; The downlink transmission direction corresponds to a downlink transmission indicated by higher layer signaling or RRC signaling, and the uplink transmission direction is dynamically indicated or a flexible transmission direction.

[0138] The third preset combination transmission direction is: A semi-statically instructed uplink transmission direction and a dynamically instructed downlink transmission direction or a flexible transmission direction; The direction of transmission includes at least one of an uplink transmission direction corresponding to an uplink transmission indicated by higher layer signaling or RRC signaling, and a dynamically indicated downlink transmission direction or a flexible transmission direction.

[0139] The first symbol is the start symbol of uplink transmission of a first frequency domain unit of any two frequency domain units, and the second symbol is the last symbol of downlink transmission or flexible transmission of a second frequency domain unit of any two frequency domain units.

[0140] Optionally, the processor 910 further comprises: a transmission direction corresponding to the SSB transmission opportunity indicated by the SSB position; a transmission direction corresponding to a transmission time dictated by the SSB measurement timing arrangement; a transmission direction corresponding to the downlink measurement reference signal; a transmission direction corresponding to a valid tracking reference signal; and a transmission direction corresponding to a control resource set of a first physical downlink control channel (PDCCH) common search space, the terminal determines that the transmission direction corresponding to the time unit is a downlink transmission direction and is used to perform a corresponding downlink operation.

[0141] The terminal in the embodiment of the present application determines a transmission direction corresponding to the time unit, such as an uplink transmission direction, a downlink transmission direction or a flexible transmission direction, according to the first indication signaling, so that the terminal without full duplex function can determine the transmission direction of the time unit in the flexible duplex / full duplex system.

[0142] As shown in FIG. 10, an embodiment of the present application further provides a device 1000 for determining a transmission direction, which includes: a first transmitting module 1001 ; The first transmission module 1001 is used for sending a first indication signaling, the first indication signaling is for determining a transmission direction corresponding to a time unit, the transmission direction including an uplink transmission direction, a downlink transmission direction or a flexible transmission direction; Wherein, the flexible transmission direction is: Uplink transmission direction, Downlink transmission direction, A flexible direction in which neither reception nor transmission occurs.

[0143] Optionally, the device of the present application comprises: The device further includes a second determining module for determining the first indication signaling.

[0144] Optionally, the first indication signaling comprises: Higher layer signaling, Radio Resource Control (RRC) signaling, Dynamic signaling, A system message.

[0145] Optionally, the system message includes at least one of full duplex uplink and downlink common configuration information and flexible duplex uplink and downlink common configuration information.

[0146] Optionally, the RRC signaling includes at least one of full duplex uplink / downlink specific configuration information and flexible duplex uplink / downlink specific configuration information.

[0147] The apparatus of the embodiment of the present application is for sending a first indication signaling, and determining a transmission direction that the first indication signaling corresponds to a time unit, so that a terminal without full duplex capability can determine the transmission direction of a time unit in a flexible duplex / full duplex system.

[0148] An embodiment of the present application further provides a network side device, the network side device including: a processor and a communication interface, the communication interface is used for sending a first indication signaling, the first indication signaling is for determining a transmission direction corresponding to a time unit, the transmission direction includes an uplink transmission direction, a downlink transmission direction or a flexible transmission direction; Wherein, the flexible transmission direction is: Uplink transmission direction, Downlink transmission direction, A flexible direction in which neither reception nor transmission occurs.

[0149] The embodiment of the network side equipment corresponds to the method embodiment of the above network side equipment, and each implementation process and realization form of the above method embodiment is applicable to the embodiment of the network side equipment, and similar technical effects can be achieved.

[0150] Specifically, an embodiment of the present application further provides a network side device. As shown in Fig. 11, the network device 1100 includes an antenna 1101, a radio frequency device 1102, and a baseband device 1103. The antenna 1101 is connected to the radio frequency device 1102. In the uplink direction, the radio frequency device 1102 receives information through the antenna 1101, and transmits the received information to the baseband device 1103 for processing. In the downlink direction, the baseband device 1103 processes the information to be transmitted and transmits it to the radio frequency device 1102, and the radio frequency device 1102 processes the received information before transmitting it via the antenna 1101.

[0151] The above-mentioned frequency band processing device may be in a baseband device 1103 , and the method performed by the network side equipment in the above-mentioned embodiment may be realized in the baseband device 1103 , which includes a processor 1104 and a memory 1105 .

[0152] The baseband device 1103 may, for example, include at least one baseband board having multiple chips installed thereon, and as shown in FIG. 11, one of the chips is, for example, a processor 1104 connected to a memory 1105 to call a program in the memory 1105 and perform the operations of the network side equipment shown in the above method embodiments.

[0153] The baseband device 1103 may further include a network interface 1106 for communicating with the radio frequency device 1102, the interface being, for example, a common public radio interface (abbreviated as CPRI).

[0154] Specifically, the network side device of the embodiment of the present invention further includes a command or program stored in memory 1105 and executable by processor 1104, and processor 1104 can call the command or program in memory 1105 to execute the method performed by each module shown in Fig. 10 to achieve similar technical effects. To avoid duplication, detailed description will be omitted here.

[0155] The embodiments of the present application further provide a readable storage medium, which stores a program or command, and when the program or command is executed by a processor, each process of the embodiment of the method for determining the transmission direction is realized, and the same technical effect can be achieved. In order to avoid repetition, detailed description is omitted here.

[0156] Here, the processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer readable storage medium such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0157] The embodiment of the present application further provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled with the processor, and the processor executes a program or command to realize each process of the embodiment of the method for determining the transmission direction, and can achieve the same technical effects. In order to avoid duplication, detailed description is omitted here.

[0158] It should be understood that the chip described in the embodiments of the present application may be referred to as a system chip, a chip system, a system on a chip, or the like.

[0159] It should be noted that in this specification, the terms "comprise", "consist of" or any other variation thereof are intended to include a non-exclusive inclusion, whereby a process, method, article, or apparatus that includes a set of elements includes not only those elements, but also other elements not expressly stated or inherent to such process, method, article, or apparatus. Unless otherwise specified, an element limited by the phrase "comprises a ..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element. It should also be noted that the scope of the method and apparatus in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may include performing functions substantially simultaneously or in the reverse order depending on such functions, for example, the described method may be performed in a different order than described, and various steps may be added, omitted, or combined. Also, features described with reference to any example may be combined in other examples.

[0160] From the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be realized in the form of a combination of software and a necessary common hardware platform. Of course, it can also be realized by hardware, but in many cases the former is a more preferred embodiment. Based on this view, the technical solutions of the present application can be substantially or in part contributed to the prior art can be embodied in the form of a computer software product, which is stored in a storage medium (e.g., ROM / RAM, magnetic disk, optical disk) and includes a number of commands that cause a terminal (which may be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in the embodiments of the present application.

[0161] Although the examples of the present application have been described above with reference to the drawings, the present application is not limited to the above-mentioned specific embodiments, which are merely illustrative and not limiting. Based on the suggestions of the present application, many forms that a person skilled in the art can make without departing from the spirit of the present application and the scope of protection of the claims are all within the scope of protection of the present application.

Claims

1. A method for determining a transmission direction applied to a terminal, comprising: The method includes: determining, by the terminal, a transmission direction corresponding to the time unit in response to the first indication signaling, the transmission direction including an uplink transmission direction, a downlink transmission direction, or a flexible transmission direction; The flexible transmission direction is: Uplink transmission direction, Downlink transmission direction, a flexible direction in which neither reception nor transmission occurs; The step of the terminal determining a transmission direction corresponding to a time unit in response to the first indication signaling includes: The terminal determines a transmission direction corresponding to at least one frequency domain unit in a time unit according to the first indication signaling, where the transmission direction corresponding to the frequency domain unit includes an uplink transmission direction, a downlink transmission direction, or a flexible transmission direction; A terminal determines a transmission direction corresponding to the time unit according to a transmission direction corresponding to the frequency domain unit; Where: The step of determining a transmission direction corresponding to the time unit according to a transmission direction corresponding to the frequency domain unit by the terminal includes: When the transmission direction of any two frequency domain units in the time unit determined according to the first instruction signaling is a first preset combined transmission direction, the terminal determines a transmission direction corresponding to the time unit according to a preset rule; The preset rule is: determining a transmission direction corresponding to the time unit according to a transmission direction corresponding to a frequency domain unit having a smallest index within the time unit; determining a transmission direction corresponding to the time unit according to a transmission direction corresponding to a reference frequency domain unit in the time unit; determining a transmission direction corresponding to the time unit according to a relationship between a first value, which is the number of frequency domain units whose corresponding transmission direction in the time unit is an uplink transmission direction, a second value, which is the number of frequency domain units whose corresponding transmission direction in the time unit is a downlink transmission direction, and a third value, which is the number of frequency domain units whose corresponding transmission direction in the time unit is a flexible transmission direction; A preset transmission direction includes a downlink transmission direction, an uplink transmission direction, or a flexible transmission direction by default; Determining an incorrect network configuration; A terminal autonomously determines a transmission direction corresponding to a time unit; determining a transmission direction corresponding to a time unit in response to dynamic signaling on the target carrier; determining a transmission direction corresponding to a time unit in response to dynamic signaling on an activated bandwidth part BWP on the target carrier; determining a transmission direction corresponding to said time unit according to target information of a signal waiting to be processed on a target carrier; determining a transmission direction corresponding to said time unit according to target information of a pending signal on an activated bandwidth part BWP on a target carrier; the target information includes at least one of a priority of a signal, a content of a signal, a channel on which the signal is present, and a magnitude of a signal; the target carrier is all carriers within the time unit or a first carrier within the time unit; Or, The step of determining a transmission direction corresponding to the time unit according to a transmission direction corresponding to the frequency domain unit by the terminal includes: determining that a transmission direction corresponding to the time unit is an uplink transmission direction when a transmission direction of any two frequency domain units in the time unit determined according to a first indication signaling is a second preset combined transmission direction; When the transmission direction of any two frequency domain units in the time unit determined according to the first instruction signaling is a third preset combined transmission direction, if the time difference between the first symbol and the second symbol is equal to or greater than a terminal processing time, determine that the transmission direction corresponding to the time unit is a downlink transmission direction or a flexible transmission direction; otherwise, determine that the transmission direction corresponding to the time unit is an uplink transmission direction, or determine that the network configuration is incorrect; and determining that the transmission direction corresponding to the time unit is a downlink transmission direction or a flexible transmission direction when the transmission direction of any two frequency domain units in the time unit determined according to the first indication signaling is a third preset combined transmission direction, where a time difference between the first symbol and the second symbol arranged by the network is equal to or greater than a terminal processing time; The second preset combined transmission direction is: a semi-statically instructed downlink transmission direction and a dynamically instructed uplink transmission direction or a flexible transmission direction; a downlink transmission direction corresponding to a downlink transmission indicated by higher layer signaling or radio resource control (RRC) signaling, and a dynamically indicated uplink transmission direction or a flexible transmission direction; The third preset combination transmission direction is: A semi-statically instructed uplink transmission direction and a dynamically instructed downlink transmission direction or a flexible transmission direction; an uplink transmission direction corresponding to an uplink transmission indicated by higher layer signaling or radio resource control (RRC) signaling, and a dynamically indicated downlink transmission direction or a flexible transmission direction; The first symbol is a start symbol of an uplink transmission of a first frequency domain unit of any two frequency domain units, and the second symbol is a last symbol of a downlink transmission or flexible transmission of a second frequency domain unit of any two frequency domain units; Or, The step of determining a transmission direction corresponding to the time unit according to a transmission direction corresponding to the frequency domain unit by the terminal includes: A transmission direction corresponding to any frequency domain unit within the time unit is a transmission direction corresponding to the transmission opportunity of the SSB indicated by the SSB position; a transmission direction corresponding to a transmission time indicated by the SSB measurement timing arrangement; a transmission direction corresponding to the downlink measurement reference signal; a transmission direction corresponding to a valid tracking reference signal; and a transmission direction corresponding to a control resource set of a first physical downlink control channel (PDCCH) common search space.

2. The first instruction signaling Higher layer signaling, Radio resource control (RRC) signaling; Dynamic signaling, A system message.

3. The system message includes at least one of full duplex uplink / downlink common configuration information and flexible duplex uplink / downlink common configuration information, Or, The method of claim 2 , wherein the radio resource control (RRC) signaling includes at least one of full duplex uplink / downlink specific configuration information and flexible duplex uplink / downlink specific configuration information.

4. The step of determining a transmission direction corresponding to the time unit according to a transmission direction corresponding to the frequency domain unit by a terminal further comprises: A transmission direction corresponding to the frequency domain unit is: A downlink transmission direction that is semi-statically indicated by a system message; a downlink transmission direction that is semi-statically indicated by radio resource control (RRC) signaling; downlink transmissions indicated by higher layer signaling or radio resource control (RRC) signaling; a downlink transmission direction indicated by dynamic signaling; and a transmission direction corresponding to the synchronization signal / physical broadcast channel signal block (SSB) position in the system message 1; a transmission direction corresponding to an SSB location indicated by a serving cell configuration common signaling; and a transmission direction corresponding to a control resource set used for a first physical downlink control channel (PDCCH) common search space in a master information block.

5. The step of determining a transmission direction corresponding to the time unit according to a transmission direction corresponding to the frequency domain unit by a terminal further comprises: A transmission direction corresponding to the frequency domain unit is: An uplink transmission direction that is semi-statically indicated by a system message; an uplink transmission direction that is semi-statically indicated by radio resource control (RRC) signaling; an uplink transmission direction corresponding to an uplink transmission indicated by higher layer signaling or radio resource control (RRC) signaling; and an uplink transmission direction indicated by dynamic signaling, the terminal determining that the transmission direction corresponding to the time unit is an uplink transmission direction.

6. The step of determining a transmission direction corresponding to the time unit according to a transmission direction corresponding to the frequency domain unit by a terminal further comprises: A transmission direction corresponding to the frequency domain unit is: Flexible transmission direction semi-statically indicated by system messages; Flexible transmission direction semi-statically indicated by radio resource control (RRC) signaling; and a flexible transmission direction indicated by dynamic signaling.

7. The step of determining a transmission direction corresponding to the time unit according to a transmission direction corresponding to the frequency domain unit by a terminal further comprises: When at least one first frequency domain unit exists in the time unit and a transmission direction corresponding to a second frequency domain unit is a flexible transmission direction, the terminal determines that the transmission direction corresponding to the time unit is a downlink transmission direction; 2. The method of claim 1, wherein the first frequency domain unit is a frequency domain unit whose corresponding transmission direction determined in response to the first indication signaling is a downlink transmission direction, and the second frequency domain unit is a frequency domain unit other than the first frequency domain unit within the time unit.

8. The step of determining a transmission direction corresponding to the time unit according to a transmission direction corresponding to the frequency domain unit by a terminal further comprises: When at least one third frequency domain unit exists in the time unit and a transmission direction corresponding to a fourth frequency domain unit is a flexible transmission direction, the terminal determines that the transmission direction corresponding to the time unit is an uplink transmission direction; 2. The method of claim 1, wherein the third frequency domain unit is a frequency domain unit whose corresponding transmission direction determined in response to the first indication signaling is an uplink transmission direction, and the fourth frequency domain unit is a frequency domain unit other than the third frequency domain unit within the time unit.

9. The first carrier, the carrier with the highest or lowest index among all active carriers; A reference carrier that is configured or indicated by the network; a carrier in a first carrier set of the time unit that has a maximum or minimum index and a transmission direction that is uplink or downlink, the first carrier set being a set of active carriers in the time unit other than the carrier whose transmission direction is a flexible transmission direction; Or, The first preset combined transmission direction is downlink and uplink transmission directions; A semi-statically directed downlink transmission direction and a dynamically directed flexible transmission direction; A semi-statically instructed uplink transmission direction and a dynamically instructed flexible transmission direction; A transmission direction corresponding to the SSB position in the system message 1 and a dynamically indicated flexible transmission direction; A transmission direction corresponding to an SSB position indicated by a serving cell configuration common signaling and a flexible transmission direction dynamically indicated; 2. The method of claim 1, further comprising: a transmission direction corresponding to a control resource set used for a first physical downlink control channel (PDCCH) common search space in a master information block; and a dynamically indicated flexible transmission direction.

10. A method for determining a transmission direction applied to a communication system including a network side device and a terminal, comprising: The method includes the steps of: a network side device sending a first instruction signaling to a terminal; and the terminal determining a transmission direction corresponding to the time unit according to the first instruction signaling, wherein the transmission direction includes an uplink transmission direction, a downlink transmission direction, or a flexible transmission direction; The flexible transmission direction is: Uplink transmission direction, Downlink transmission direction, a flexible direction in which neither reception nor transmission occurs; The step of the terminal determining a transmission direction corresponding to a time unit in response to the first indication signaling includes: The terminal determines a transmission direction corresponding to at least one frequency domain unit in a time unit according to the first indication signaling, where the transmission direction corresponding to the frequency domain unit includes an uplink transmission direction, a downlink transmission direction, or a flexible transmission direction; A terminal determines a transmission direction corresponding to the time unit according to a transmission direction corresponding to the frequency domain unit; Where: The step of determining a transmission direction corresponding to the time unit according to a transmission direction corresponding to the frequency domain unit by the terminal includes: When the transmission direction of any two frequency domain units in the time unit determined according to the first instruction signaling is a first preset combined transmission direction, the terminal determines a transmission direction corresponding to the time unit according to a preset rule; The preset rule is: determining a transmission direction corresponding to the time unit according to a transmission direction corresponding to a frequency domain unit having a smallest index within the time unit; determining a transmission direction corresponding to the time unit according to a transmission direction corresponding to a reference frequency domain unit in the time unit; determining a transmission direction corresponding to the time unit according to a relationship between a first value, which is the number of frequency domain units whose corresponding transmission direction in the time unit is an uplink transmission direction, a second value, which is the number of frequency domain units whose corresponding transmission direction in the time unit is a downlink transmission direction, and a third value, which is the number of frequency domain units whose corresponding transmission direction in the time unit is a flexible transmission direction; A preset transmission direction includes a downlink transmission direction, an uplink transmission direction, or a flexible transmission direction by default; Determining an incorrect network configuration; A terminal autonomously determines a transmission direction corresponding to a time unit; determining a transmission direction corresponding to a time unit in response to dynamic signaling on the target carrier; determining a transmission direction corresponding to a time unit in response to dynamic signaling on an activated bandwidth part BWP on the target carrier; determining a transmission direction corresponding to said time unit according to target information of a signal waiting to be processed on a target carrier; determining a transmission direction corresponding to said time unit according to target information of a pending signal on an activated bandwidth part BWP on a target carrier; the target information includes at least one of a priority of a signal, a content of a signal, a channel on which the signal is present, and a magnitude of a signal; the target carrier is all carriers within the time unit or a first carrier within the time unit; Or, The step of determining a transmission direction corresponding to the time unit according to a transmission direction corresponding to the frequency domain unit by the terminal includes: determining that a transmission direction corresponding to the time unit is an uplink transmission direction when a transmission direction of any two frequency domain units in the time unit determined according to a first indication signaling is a second preset combined transmission direction; When the transmission direction of any two frequency domain units in the time unit determined according to the first instruction signaling is a third preset combined transmission direction, if the time difference between the first symbol and the second symbol is equal to or greater than a terminal processing time, determine that the transmission direction corresponding to the time unit is a downlink transmission direction or a flexible transmission direction; otherwise, determine that the transmission direction corresponding to the time unit is an uplink transmission direction, or determine that the network configuration is incorrect; and determining that the transmission direction corresponding to the time unit is a downlink transmission direction or a flexible transmission direction when the transmission direction of any two frequency domain units in the time unit determined according to the first indication signaling is a third preset combined transmission direction, where a time difference between the first symbol and the second symbol arranged by the network is equal to or greater than a terminal processing time; The second preset combined transmission direction is: a semi-statically instructed downlink transmission direction and a dynamically instructed uplink transmission direction or a flexible transmission direction; a downlink transmission direction corresponding to a downlink transmission indicated by higher layer signaling or radio resource control (RRC) signaling, and a dynamically indicated uplink transmission direction or a flexible transmission direction; The third preset combination transmission direction is: A semi-statically instructed uplink transmission direction and a dynamically instructed downlink transmission direction or a flexible transmission direction; an uplink transmission direction corresponding to an uplink transmission indicated by higher layer signaling or radio resource control (RRC) signaling, and a dynamically indicated downlink transmission direction or a flexible transmission direction; The first symbol is a start symbol of an uplink transmission of a first frequency domain unit of any two frequency domain units, and the second symbol is a last symbol of a downlink transmission or flexible transmission of a second frequency domain unit of any two frequency domain units; Or, The step of determining a transmission direction corresponding to the time unit according to a transmission direction corresponding to the frequency domain unit by the terminal includes: A transmission direction corresponding to any frequency domain unit within the time unit is a transmission direction corresponding to the transmission opportunity of the SSB indicated by the SSB position; a transmission direction corresponding to a transmission time indicated by the SSB measurement timing arrangement; a transmission direction corresponding to the downlink measurement reference signal; a transmission direction corresponding to a valid tracking reference signal; and a transmission direction corresponding to a control resource set of a first physical downlink control channel (PDCCH) common search space.

11. A terminal comprising a processor, a memory, and a program or command stored in the memory and executable on the processor, wherein when the program or command is executed by the processor, steps of the transmission direction determination method described in any one of claims 1 to 9 are realized.

12. A communication system comprising a processor, a memory, and a program or command stored in the memory and executable on the processor, wherein when the program or command is executed by the processor, the steps of the transmission direction determination method described in claim 10 are realized.

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