Communication method and apparatus, and computer readable storage medium

Abstract

A communication method and apparatus, and a computer readable storage medium. The communication method comprises: acquiring first configuration information, wherein the first configuration information is used for configuring a first time slot, and the first time slot is a time slot configured to support subband full duplex; and in an inactive state or a connected state, using a configured grant to perform uplink data transmission within the first time slot. By means of the described solution, in the inactive state, a terminal device can perform small data transmission within the time slot supporting subband full duplex.

Description

Communication method and device, and computer-readable storage medium

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on November 20, 2023, with application number 202311551439.9 and invention name “Communication method and device, computer-readable storage medium”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present invention relates to the field of wireless communication technologies, and in particular to a communication method and device, and a computer-readable storage medium. Background Art

[0003] To improve the transmission efficiency of small data, the New Radio (NR) system introduces two inactive Small Data Transmission (SDT) mechanisms: Random Access-based SDT (RA-SDT) and Configuration Grant-based SDT (CG-SDT). These two SDT mechanisms allow terminal devices to transmit data below a preset bit count threshold in an inactive state without requiring them to enter a connected state, thereby reducing signaling overhead and, consequently, power consumption.

[0004] In the prior art, SDT is only configured in the uplink time slot, that is, the terminal device can transmit small data through the uplink time slot when it is in an inactive state.

[0005] Summary of the Invention

[0006] The embodiment of the present invention aims to provide a communication method capable of performing data transmission using a configuration grant in a time slot configured with sub-band full-duplex.

[0007] In a first aspect, the present invention provides a communication method, including: obtaining first configuration information, the first configuration information being used to configure a first time slot, the first time slot being a time slot for configuring sub-band full-duplex; in an inactive state or a connected state, using configuration authorization for uplink data transmission in the first time slot.

[0008] The terminal device, in an inactive state or a connected state, uses the configuration grant to perform uplink data transmission in the first time slot configured with sub-band full-duplex. Thus, uplink data transmission is performed using the configuration grant in the time slot configured with sub-band full-duplex.

[0009] Optionally, the first configuration information further includes: a search space, where the search space is used to detect sub-band full-duplex configuration information.

[0010] Network devices can dynamically configure sub-band full-duplex. Terminal devices detect the search space to obtain the latest sub-band full-duplex configuration information, and then use the configuration grant for uplink data transmission in the first time slot.

[0011] Optionally, the first configuration information further includes: resource parameters, where the resource parameters are used to determine the uplink frequency domain resources used for the configuration authorization.

[0012] The terminal device can determine to use the uplink frequency domain resources authorized by the configuration based on the resource parameters in the first configuration information. Thus, the network device can flexibly modify the frequency band resources of the sub-band full-duplex, and the terminal device can also adjust the uplink frequency domain resources used accordingly.

[0013] Optionally, the bandwidth of the uplink frequency domain resources is associated with the frequency band bandwidth of the activated sub-band full-duplex, or the starting position of the uplink frequency domain resources is associated with the frequency band bandwidth of the activated sub-band full-duplex, or the number of symbols occupied by the uplink frequency domain resources is associated with the number of symbols occupied by the activated sub-band full-duplex.

[0014] The terminal device determines the bandwidth of the uplink frequency domain resources based on the frequency bandwidth of the activated sub-band full-duplex; alternatively, the terminal device determines the starting position of the uplink frequency domain resources based on the frequency bandwidth of the activated sub-band full-duplex; alternatively, the terminal device determines the number of symbols occupied by the uplink frequency domain resources based on the frequency bandwidth of the activated sub-band full-duplex. Thus, based on the frequency bandwidth of the activated sub-band full-duplex, the terminal device can adjust the uplink frequency domain resources, achieving flexible configuration of the uplink frequency domain resources.

[0015] Optionally, the terminal device detects the configuration authorization located in the normal uplink time slot and the configuration authorization located in the first time slot, and uses the configuration authorization located in the first time slot to perform uplink data transmission.

[0016] When both a configuration grant in a normal uplink timeslot and a configuration grant in the first timeslot are configured, the terminal device prioritizes the configuration grant in the first timeslot for uplink data transmission. This allows the terminal device to prioritize the configuration grant in the first timeslot for small data transmission, while the configuration grant in the normal uplink timeslot can be used to schedule other terminal devices, thereby improving resource utilization efficiency.

[0017] Optionally, the terminal device may also receive indication information, where the indication information is used to indicate the use of the configuration authorization located in the first time slot for uplink data transmission.

[0018] When the configuration authorization located in the normal uplink time slot and the configuration authorization located in the first time slot are configured at the same time, the network device can instruct the terminal device to only select the configuration authorization located in the first time slot for small data transmission, thereby improving resource utilization efficiency.

[0019] Optionally, in the inactive state, the amount of data transmitted for uplink data transmission using the configuration grant is less than a preset bit data amount threshold.

[0020] When the terminal device is in an inactive state, the terminal device can use the configuration authorization to perform uplink data transmission in the first time slot, thereby realizing small data transmission in the time slot configured with sub-band full-duplex.

[0021] Optionally, if the terminal device does not obtain the first configuration information, the terminal device may use the configuration authorization located in the normal uplink time slot for uplink data transmission.

[0022] If the terminal device does not obtain the first configuration information, it can use the configuration authorization located in the ordinary uplink time slot to perform uplink data transmission, which is compatible with the existing communication protocol.

[0023] Optionally, the terminal device may also obtain second configuration information to determine the logical channel corresponding to the data for uplink data transmission using the configuration authorization in the first time slot.

[0024] The network device can configure a logical channel for the terminal device, which can carry data for uplink data transmission using the configuration grant in the first time slot. The terminal device can determine which logical channel data to transmit using the configuration grant in the first time slot. This allows the network device to effectively schedule the data transmitted by the terminal device and reduce interference during the terminal device's uplink and downlink data transmission.

[0025] Optionally, no specific search space is configured in the first time slot; or, there is no need to monitor random access responses in the first time slot; or, the priority of data transmitted through the configured authorization in the first time slot is greater than or equal to a preset threshold; or, there is no need to receive downlink data scheduled by downlink control signaling containing a priority indication in the first time slot; or, there is no need to apply a measurement gap in the first time slot, and uplink data transmission is performed in the first time slot using the configured authorization.

[0026] In a second aspect, the present invention provides another communication method, including: sending first configuration information, the first configuration information is used to configure a first time slot, the first time slot is a time slot for configuring sub-band full-duplex; sending indication information, the indication information indicates the use of configuration authorization for uplink data transmission in the first time slot.

[0027] Optionally, the first configuration information further includes: a search space, where the search space is used to detect sub-band full-duplex configuration information.

[0028] Optionally, the first configuration information further includes: resource parameters, where the resource parameters are used to determine the uplink frequency domain resources used for the configuration authorization.

[0029] Optionally, the bandwidth of the uplink frequency domain resources is associated with the frequency band bandwidth of the activated sub-band full-duplex, or the starting position of the uplink frequency domain resources is associated with the frequency band bandwidth of the activated sub-band full-duplex, or the number of symbols occupied by the uplink frequency domain resources is associated with the number of symbols occupied by the activated sub-band full-duplex.

[0030] In a third aspect, the present invention provides a communication device, including: an acquisition unit for acquiring first configuration information, wherein the first configuration information is used to configure a first time slot, and the first time slot is a time slot for configuring sub-band full-duplex; a data transmission unit for using the configuration authorization to perform uplink data transmission in the first time slot in an inactive state or a connected state.

[0031] In a fourth aspect, the present invention provides another communication device, including: a first sending unit, used to send first configuration information, the first configuration information, the first configuration information is used to configure a first time slot, the first time slot is a time slot for configuring sub-band full-duplex; a second sending unit, used to send indication information, the indication information indicates the use of configuration authorization for uplink data transmission in the first time slot.

[0032] In a fifth aspect, the present invention also provides a computer-readable storage medium, which is a non-volatile storage medium or a non-transient storage medium, on which a computer program is stored, and when the computer program is run by a processor, the steps of any of the above-mentioned communication methods are executed.

[0033] In a sixth aspect, the present invention also provides another communication device, comprising a memory and a processor, wherein the memory stores a computer program that can be run on the processor, and the processor executes the steps of any one of the above-mentioned communication methods when running the computer program. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] FIG1 is a flow chart of a communication method according to an embodiment of the present invention;

[0035] FIG2 is a schematic diagram of an existing sub-band full-duplex;

[0036] FIG3 is a flow chart of another communication method in an embodiment of the present invention;

[0037] FIG4 is a schematic structural diagram of a communication device according to an embodiment of the present invention;

[0038] FIG5 is a schematic structural diagram of another communication device in an embodiment of the present invention. DETAILED DESCRIPTION

[0039] As described in the above background technology, the current small data transmission mechanism is only configured in the uplink time slot.

[0040] In an embodiment of the present invention, the terminal device uses the configuration grant to perform uplink data transmission in the first time slot configured with sub-band full-duplex in an inactive state or a connected state. Thus, uplink data transmission is performed using the configuration grant in the time slot configured with sub-band full-duplex.

[0041] In order to make the above-mentioned objects, features and beneficial effects of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0042] The terminal device described in the embodiments of the present application is a device with wireless communication capabilities, and may also be referred to as a terminal, mobile station (MS), mobile terminal (MT), access terminal equipment, vehicle-mounted terminal equipment, industrial control terminal equipment, user equipment (UE), UE unit, UE station, mobile station, remote station, remote terminal equipment, mobile device, wireless communication device, UE agent, or UE device. The UE can be fixed or mobile. It should be noted that the UE can support at least one wireless communication technology, such as LTE, NR, etc. Exemplarily, the UE may be a mobile phone, a tablet computer, a desktop computer, a laptop computer, an all-in-one computer, an in-vehicle terminal, a virtual reality (VR) UE, an augmented reality (AR) UE, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical surgery, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, a wearable device, a UE in a future mobile communication network, or a UE in a future evolved public mobile land network (PLMN), etc. In some embodiments of the present application, the UE may also be a device with transceiver functions, such as a chip system, wherein the chip system may include a chip and may also include other discrete devices.

[0043] In the embodiment of the present application, a network device is a device that provides wireless communication functions for a terminal device, and may also be referred to as a radio access network (RAN) device, an access network element, an access network device, etc. The network device may support at least one wireless communication technology, such as LTE, NR, etc. For example, the network device includes, but is not limited to: a next-generation base station (gNB) in 5G, an evolved node B (eNB), a radio network controller (RNC), a node B (NB), a base station controller (BSC), a base transceiver station (BTS), a home base station (e.g., home evolved node B, or home node B, HNB), a baseband unit (BBU), a transmitting and receiving point (TRP), a transmitting point (TP), a mobile switching center, etc. The network device may also be a wireless controller, a centralized unit (CU), and / or a distributed unit (DU) in a cloud radio access network (CRAN) scenario, or the network device may be a relay station, an access point, an on-board device, a terminal device, a wearable device, a network device in future mobile communications, or a network device in a future evolved PLMN. In some embodiments, the network device may also be a device that provides wireless communication functions for a terminal device, such as a chip system. For example, the chip system may include a chip and may also include other discrete devices.

[0044] In some embodiments, the network device may also communicate with an Internet Protocol (IP) network, such as the Internet, a private IP network, or other data networks.

[0045] An embodiment of the present invention provides a communication method, which is described in detail below through specific steps with reference to FIG1 .

[0046] In a specific implementation, the communication method provided in steps 101 to 102 below can be executed by a chip (such as a baseband chip) with data processing capabilities in the terminal device, or by a chip module with data processing capabilities in the terminal device, or by the terminal device. In the following embodiments, the communication method is described as an example of a terminal device executing the communication method.

[0047] Step 101: Obtain first configuration information.

[0048] In a specific application, a terminal device accesses the primary cell (PCell), establishes a Radio Resource Control (RRC) connection, and then establishes a data radio bearer for data transmission. After completing the data transmission, the network equipment to which the PCell belongs (hereinafter referred to as the network equipment) can switch the terminal device to an inactive state; or the network equipment can continue to maintain the terminal device in a connected state for possible subsequent data transmission.

[0049] In a specific implementation, network devices can configure subband full duplex (SBFD), that is, configure which time slots can use subband full duplex. Subband full duplex can mean that some physical resource blocks (PRBs) can be configured for uplink transmission in a downlink time slot.

[0050] 2 shows a schematic diagram of an existing sub-band full-duplex system. A downlink timeslot can be divided into two downlink sub-bands D and one uplink sub-band U. Terminal devices can perform uplink data transmission via the uplink sub-band.

[0051] In a specific implementation, after determining to maintain the terminal device in a connected state, the network device may configure first configuration information for the terminal device and send the first configuration information to the terminal device. Alternatively, when determining to transition the terminal device to an inactive state, the network device may also configure the first configuration information for the terminal device and send the first configuration information to the terminal device. The first configuration information may be used to configure a first time slot, which is a time slot for configuring sub-band full-duplex.

[0052] Specifically, the network device may send the first configuration information to the terminal device through high-layer signaling (such as RRC signaling, MAC CE, etc.).

[0053] The terminal device may receive the first configuration information sent by the network device. The terminal device may determine, based on the first configuration information, a first time slot configured with sub-band full-duplex.

[0054] In specific applications, the network device can dynamically configure the sub-band full-duplex mode. In different time periods, the network device can configure different sub-band full-duplex frequency bandwidths.

[0055] For example, in the first time period, the network device configures 20 physical resource blocks for sub-band full-duplex. Then, in the first time period, the frequency band bandwidth of the activated sub-band full-duplex is 20 physical resource blocks.

[0056] In some embodiments, the first configuration information may further indicate the duration of the first time period. After the first time period ends, if the terminal device does not receive new first configuration information, the terminal device considers that the first time slot of the sub-band full-duplex is no longer valid, that is, there is no activated first time slot of the sub-band full-duplex at this time.

[0057] For example, if the network device detects increased uplink demand during the second time period, it may configure 30 physical resource blocks for sub-band full-duplex. During the second time period, the network device may again send the first configuration information, indicating that the frequency bandwidth of the activated sub-band full-duplex is 30 physical resource blocks and the first time slot configured for sub-band full-duplex. It should be noted that during the second time period, there can be one or more first time slots configured for sub-band full-duplex, and the first configuration information can clearly indicate the distribution of the first time slots.

[0058] In another embodiment of the present invention, the network device may be configured to detect a search space for the time slot where the sub-band full-duplex is located. The terminal device obtains the search space and detects the search space to obtain the sub-band full-duplex configuration information. The search space may be carried in the first configuration information. For example, the network device may indicate the first configuration information through RRC release signaling when the terminal device is switched to an inactive state. The first configuration information carries the search space for detecting the time slot where the sub-band full-duplex is located (i.e., the first time slot) and the corresponding detection timing. After the terminal device enters the inactive state, it may detect the search space and obtain the first time slot (distribution) where the sub-band full-duplex is located in a timely manner through downlink control signaling.

[0059] It is understandable that the network device may also send the search space to the terminal device in the connected state through other configuration information, so that the terminal device in the connected state may also promptly detect the first time slot (distribution) where the sub-band full-duplex is located.

[0060] In an embodiment of the present invention, the network device may further configure resource parameters. The terminal device may determine the uplink frequency domain resources to use for the configured grant (CG) based on the resource parameters. The resource parameters may be the frequency bandwidth of the activated sub-band full-duplex or the number of symbols occupied by the activated sub-band full-duplex.

[0061] Specifically, the bandwidth of the uplink frequency domain resources can be associated with the bandwidth of the activated sub-band full-duplex frequency band, so that the uplink resources in the sub-band full-duplex time slot can be fully utilized. Thus, the terminal device can determine the bandwidth of the uplink frequency domain resources based on the bandwidth of the activated sub-band full-duplex frequency band. The bandwidth of the uplink frequency domain resources can be different depending on the bandwidth of the activated sub-band full-duplex frequency band.

[0062] That is to say, the configuration authorization that the network device can configure for the terminal device can have at least two uplink frequency domain resources with different bandwidths. Once the terminal device determines that the frequency band bandwidth of the activated sub-band full-duplex is larger, the terminal device selects the uplink frequency domain resource with the corresponding larger bandwidth as the usable configuration authorization; if the terminal device determines that the frequency band bandwidth of the activated sub-band full-duplex is smaller, the terminal device selects the uplink frequency domain resource with the corresponding smaller bandwidth as the usable configuration authorization.

[0063] Alternatively, the starting position of the uplink frequency domain resources may also be associated with the frequency band bandwidth of the activated sub-band full-duplex. Thus, the terminal device may determine the starting position of the uplink frequency domain resources based on the frequency band bandwidth of the activated sub-band full-duplex. The starting position of the uplink frequency domain resources may be different depending on the frequency band bandwidth of the activated sub-band full-duplex. The starting position may be relative to the position of the smallest physical resource block within the time slot, or relative to the position of the smallest physical resource block within the frequency band configured for sub-band full-duplex.

[0064] Alternatively, the number of symbols occupied by the uplink frequency domain resources may be associated with the number of symbols occupied by the activated sub-band full-duplex. Thus, the terminal device may determine the number of symbols occupied by the uplink frequency domain resources based on the number of symbols occupied by the activated sub-band full-duplex. The number of symbols occupied by the uplink frequency domain resources may be different depending on the number of symbols occupied by the activated sub-band full-duplex.

[0065] That is to say, the configuration authorization that the network device can configure for the terminal device can have at least two uplink frequency domain resources with different numbers of occupied symbols. Once the terminal device determines that the number of symbols occupied by the activated sub-band full-duplex is small, the terminal device selects the corresponding uplink frequency domain resource occupying fewer symbols as the usable configuration authorization; if the terminal device determines that the number of symbols occupied by the activated sub-band full-duplex is large, the terminal device selects the corresponding uplink frequency domain resource occupying more symbols as the usable configuration authorization.

[0066] In the embodiment of the present invention, the aforementioned “activated sub-band full-duplex” may refer to the sub-band full-duplex configured by the network device to be used by the terminal device.

[0067] In some embodiments, the network device may carry resource parameters in the first configuration information. In other embodiments, the network device may also carry resource parameters through other information (such as other configuration information different from the first configuration information, indication information, etc.). For example, when the first configuration information is used to indicate the search space of the time slot where the sub-band full-duplex is detected and the corresponding detection timing, the resource parameters may be indicated through downlink control signaling.

[0068] Step 102: In an inactive state or a connected state, use the configuration grant to perform uplink data transmission in the first time slot.

[0069] In an embodiment of the present invention, a network device may configure a configuration authorization located in the first time slot and a configuration authorization located in a normal uplink time slot for a terminal device. When the terminal device has a need to perform uplink data transmission, the terminal device may use the configuration authorization located in the first time slot for uplink data transmission, or may use the configuration authorization located in a normal uplink time slot for uplink data transmission. It should be noted that the content transmitted through the configuration authorization may be data or signaling, because for the bottom layer (such as the physical layer), the upper layer signaling (such as RRC signaling) or data transmitted may be collectively referred to as data.

[0070] In a specific implementation, when the network device is configured with a configuration authorization located in the first time slot and a configuration authorization located in a normal uplink time slot, the network device can instruct the terminal device to use the configuration authorization located in the first time slot for uplink data transmission. The configuration authorization can be located in only some of the multiple first time slots.

[0071] Specifically, when the terminal device is in a connected state, the network device may send an indication message to the terminal device. The terminal device obtains the indication message and uses the configuration authorization in the first time slot to perform uplink data transmission.

[0072] In a specific implementation, when the network device is configured with a configuration authorization located in the first time slot and a configuration authorization located in a normal uplink time slot, the terminal device may also preferentially use the configuration authorization located in the first time slot for uplink data transmission.

[0073] In some embodiments, the network device may configure the priority of the configuration authorization in the first time slot to be higher than the priority of the configuration authorization in the normal uplink time slot, and indicate this to the terminal device. Alternatively, the terminal device may also default that the priority of the configuration authorization in the first time slot is higher than the priority of the configuration authorization in the normal uplink time slot.

[0074] In this embodiment of the present invention, the network device may not configure the first configuration information for the terminal device. Therefore, the terminal device cannot know the specific location of the first time slot. In this scenario, the terminal device can use the configuration grant located in the normal uplink time slot for uplink data transmission.

[0075] In a specific implementation, a normal uplink timeslot may refer to a timeslot used only for uplink data transmission. The normal uplink timeslot is not configured with sub-band full-duplex and cannot perform downlink data transmission.

[0076] In an embodiment of the present invention, when the terminal device is in an inactive state, the terminal device can use the configuration grant to perform uplink data transmission in the first time slot. When the terminal device uses the configuration grant to perform uplink data transmission, the amount of data transmitted uplink needs to be less than a preset bit data amount threshold.

[0077] In a specific implementation, the preset bit data volume threshold may be a default value or pre-configured by the network device and is used to determine whether the data being transmitted uplink is small data as defined in the communication protocol. When the amount of data being transmitted uplink is less than the preset bit data volume threshold, it can be determined that the terminal device is currently transmitting small data.

[0078] In some embodiments, the bit data amount threshold may be predefined in the communication protocol.

[0079] Therefore, when the terminal device is in an inactive state, the terminal device can use the configuration authorization in the first time slot to perform uplink data transmission, thereby realizing small data transmission in the time slot configured with sub-band full-duplex.

[0080] In an embodiment of the present invention, the network device may further configure second configuration information for the terminal device, where the second configuration information is used to configure a logical channel corresponding to data for uplink data transmission using the configuration authorization in the first time slot.

[0081] In specific applications, logical channels are used to carry services, and different logical channels have different configuration parameters for different service types. Data for certain service types may not be suitable for transmission in the first time slot. When using sub-band full-duplex for data transmission, there is significant interference between uplink and downlink data. Therefore, for some service types with high data accuracy requirements, they can be transmitted outside the first time slot. For other service types with lower data accuracy requirements, their corresponding data can be transmitted uplink in the first time slot using configuration grants.

[0082] In a specific implementation, the network device may configure a first type of logical channel, and data of the first type of logical channel may be transmitted uplink data using the configuration authorization in the first time slot. The terminal device obtains the second configuration information to determine the first type of logical channel that can be used for uplink data transmission using the configuration authorization in the first time slot.

[0083] In some embodiments, the network device may configure a first type of logical channel that is different from a second type of logical channel. The first type of logical channel is the above-mentioned "logical channel corresponding to data for uplink data transmission using configuration authorization in the first time slot", and the second type of logical channel may be "logical channel corresponding to data for uplink data transmission using configuration authorization in a normal uplink time slot".

[0084] In an embodiment of the present invention, if the terminal device detects that a specific search space (UE specific search space) is not configured in the first time slot, the terminal device may use the configuration authorization to perform uplink data transmission in the first time slot.

[0085] Alternatively, the terminal device determines that it does not need to monitor the random access response in the first time slot, then the terminal device can use the configuration authorization to perform uplink data transmission in the first time slot.

[0086] Alternatively, if the terminal device determines that the priority of data transmitted through the configuration authorization in the first time slot is greater than or equal to a preset threshold, the terminal device can use the configuration authorization in the first time slot for uplink data transmission.

[0087] Alternatively, if the terminal device determines that it does not need to receive downlink data scheduled by the downlink control signaling containing a priority indication in the first time slot, the terminal device can use the configuration authorization to perform uplink data transmission in the first time slot. If the downlink control signaling indicates that the received downlink data (carried on the physical downlink shared channel) has a specific priority, the downlink control signaling also indicates that the reception of the downlink data is in the first time slot, and there is a time domain overlap with the CG configured in the first time slot. In order to ensure the reception of the downlink data, it is necessary to receive the downlink data first.

[0088] Alternatively, if the terminal device determines that a measurement gap (GAP) does not need to be applied in the first time slot, the terminal device may use the configuration grant to perform uplink data transmission in the first time slot. Thus, the terminal device may prioritize processing of more urgent downlink services.

[0089] In an embodiment of the present invention, in the first time slot, random access resources for small data transmission (SDT) may also be configured, and the random access resources are associated with the frequency band bandwidth of the activated sub-band full-duplex or the number of symbols occupied by the activated sub-band full-duplex.

[0090] Specifically, the frequency band bandwidth of the activated sub-band full-duplex is different, and the corresponding position of the random access resource, the mapping relationship between the synchronization signal block index and the random access channel opportunity (RACH-Occasion) may be different.

[0091] In a specific implementation, when using small data transmission, if RA-SDT is used, the corresponding random access resource can be selected to initiate RA-SDT based on the frequency bandwidth of the activated sub-band full-duplex or the number of occupied symbols.

[0092] The present invention also provides another communication method, which is described in detail below through specific steps with reference to FIG. 3 .

[0093] In a specific implementation, the communication method provided in steps 301 to 302 below can be executed by a chip with data processing capabilities in a network device, or by a chip module with data processing capabilities in a network device, or by the network device. In the following embodiments, the communication method is described by taking the network device as an example.

[0094] Step 301: Send first configuration information.

[0095] In a specific implementation, network devices can configure subband full duplex (SBFD), that is, configure which time slots can use subband full duplex. Subband full duplex can mean that some physical resource blocks (PRBs) can be configured for uplink transmission in a downlink time slot.

[0096] In a specific implementation, after determining to maintain the terminal device in a connected state, the network device may configure first configuration information for the terminal device and send the first configuration information to the terminal device. Alternatively, when determining to transition the terminal device to an inactive state, the network device may also configure the first configuration information for the terminal device and send the first configuration information to the terminal device. The first configuration information may be used to configure a first time slot, which is a time slot for configuring sub-band full-duplex.

[0097] Specifically, the network device may send the first configuration information to the terminal device through high-layer signaling.

[0098] The terminal device may receive the first configuration information sent by the network device. The terminal device may determine, based on the first configuration information, a first time slot configured with sub-band full-duplex.

[0099] In specific applications, the network device can dynamically configure the sub-band full-duplex mode. In different time periods, the network device can configure different sub-band full-duplex frequency bandwidths.

[0100] In this embodiment of the present invention, a network device may configure a search space for detecting the time slot (i.e., the first time slot) in which sub-band full-duplex is located. A terminal device acquires the search space and detects the search space to obtain sub-band full-duplex configuration information. The search space may be included in the first configuration information or may be sent to the terminal device by the network device via other configuration information. Specifically, the network device may send the search space to a connected terminal device via other configuration information.

[0101] In this embodiment of the present invention, the network device may further configure resource parameters. The terminal device may determine to use the configured authorized uplink frequency domain resources based on the resource parameters. The resource parameters may be the frequency bandwidth of the activated sub-band full-duplex mode or the number of symbols occupied by the activated sub-band full-duplex mode.

[0102] Specifically, the bandwidth of the uplink frequency domain resources can be associated with the bandwidth of the activated sub-band full-duplex frequency band, so that the uplink resources in the sub-band full-duplex time slot can be fully utilized. Thus, the terminal device can determine the bandwidth of the uplink frequency domain resources based on the bandwidth of the activated sub-band full-duplex frequency band. The bandwidth of the uplink frequency domain resources can be different depending on the bandwidth of the activated sub-band full-duplex frequency band.

[0103] Alternatively, the starting position of the uplink frequency domain resources may also be associated with the frequency band bandwidth of the activated sub-band full-duplex. Thus, the terminal device may determine the starting position of the uplink frequency domain resources based on the frequency band bandwidth of the activated sub-band full-duplex. The starting position of the uplink frequency domain resources may be different depending on the frequency band bandwidth of the activated sub-band full-duplex. The starting position may be relative to the position of the smallest physical resource block within the time slot, or relative to the position of the smallest physical resource block within the frequency band configured for sub-band full-duplex.

[0104] Alternatively, the number of symbols occupied by the uplink frequency domain resources may be associated with the number of symbols occupied by the activated sub-band full-duplex. Thus, the terminal device may determine the number of symbols occupied by the uplink frequency domain resources based on the number of symbols occupied by the activated sub-band full-duplex. The number of symbols occupied by the uplink frequency domain resources may be different depending on the number of symbols occupied by the activated sub-band full-duplex.

[0105] In the embodiment of the present invention, the aforementioned “activated sub-band full-duplex” may refer to the sub-band full-duplex configured by the network device to be used by the terminal device.

[0106] In some embodiments, the network device may carry resource parameters in the first configuration information. In other embodiments, the network device may also carry resource parameters through other information (such as other configuration information different from the first configuration information, indication information, etc.).

[0107] Step 302: Send instruction information.

[0108] In an embodiment of the present invention, a network device may configure a configuration authorization in a first time slot and a configuration authorization in a normal uplink time slot for a terminal device. When the terminal device needs to perform uplink data transmission, the terminal device may use the configuration authorization in the first time slot for uplink data transmission, or may use the configuration authorization in a normal uplink time slot for uplink data transmission.

[0109] In a specific implementation, when the network device is configured with a configuration authorization located in the first time slot and a configuration authorization located in a normal uplink time slot, the network device can instruct the terminal device to use the configuration authorization located in the first time slot for uplink data transmission. The configuration authorization can be located in only some of the multiple first time slots.

[0110] Specifically, the network device may send indication information to the terminal device. The terminal device obtains the indication information and uses the configuration authorization in the first time slot to perform uplink data transmission.

[0111] In some embodiments, the network device may also configure the priority of the configuration authorization in the first time slot to be higher than the priority of the configuration authorization in the normal uplink time slot, and indicate this to the terminal device. Alternatively, the terminal device may also default that the priority of the configuration authorization in the first time slot is higher than the priority of the configuration authorization in the normal uplink time slot.

[0112] In an embodiment of the present invention, the network device may further configure second configuration information for the terminal device, where the second configuration information is used to configure a logical channel corresponding to data for uplink data transmission using the configuration authorization in the first time slot.

[0113] In a specific implementation, the specific execution process of the network device may correspond to the description in steps 101 to 102, which will not be repeated here.

[0114] 4 , a communication device 40 according to an embodiment of the present invention is provided, including: an acquisition unit 401 and a data transmission unit 402 , wherein:

[0115] An acquiring unit 401 is configured to acquire first configuration information, where the first configuration information is used to configure a first time slot, where the first time slot is a time slot for configuring sub-band full-duplex;

[0116] The data transmission unit 402 is configured to perform uplink data transmission in the first time slot using the configuration grant in an inactive state or a connected state.

[0117] In a specific implementation, the specific execution process of the acquisition unit 401 and the data transmission unit 402 may correspond to steps 101 to 102, which will not be described in detail here.

[0118] In a specific implementation, the above-mentioned communication device 40 may correspond to a chip with a data processing function in a terminal device, or correspond to a chip module with a data processing function in a terminal device, or correspond to a terminal device.

[0119] 5 , another communication device 50 in an embodiment of the present invention is provided, including: a first sending unit 501 and a second sending unit 502, wherein:

[0120] A first sending unit 501 is configured to send first configuration information, where the first configuration information is used to configure a first time slot, where the first time slot is a time slot for configuring sub-band full-duplex;

[0121] The second sending unit 502 is configured to send indication information, where the indication information indicates to use the configuration grant to perform uplink data transmission in the first time slot.

[0122] In a specific implementation, the specific execution process of the first sending unit 501 and the second sending unit 502 may correspond to steps 301 to 302, which will not be described in detail here.

[0123] In a specific implementation, the above-mentioned communication device 50 may correspond to a chip with a data processing function in a network device, or correspond to a chip module with a data processing function in a network device, or correspond to a network device.

[0124] In specific implementations, the modules / units included in the various devices and products described in the above embodiments may be software modules / units or hardware modules / units, or may be partially software modules / units and partially hardware modules / units.

[0125] For example, for each device or product applied to or integrated into a chip, each module / unit contained therein may be implemented in the form of hardware such as circuits, or at least some of the modules / units may be implemented in the form of software programs, which run on a processor integrated inside the chip, and the remaining (if any) modules / units may be implemented in the form of hardware such as circuits; for each device or product applied to or integrated into a chip module, each module / unit contained therein may be implemented in the form of hardware such as circuits, and different modules / units may be located in the same component (such as a chip, circuit module, etc.) or different components of the chip module, or at least some of the modules / units may be implemented in the form of software programs. The element can be implemented in the form of a software program, which runs on the processor integrated inside the chip module, and the remaining (if any) modules / units can be implemented in the form of hardware such as circuits; for various devices and products applied to or integrated in the terminal, the various modules / units contained therein can be implemented in the form of hardware such as circuits, and different modules / units can be located in the same component (for example, chip, circuit module, etc.) or different components in the terminal, or, at least some modules / units can be implemented in the form of a software program, which runs on the processor integrated inside the terminal, and the remaining (if any) modules / units can be implemented in the form of hardware such as circuits.

[0126] An embodiment of the present invention further provides a computer-readable storage medium, which is a non-volatile storage medium or a non-transient storage medium, storing a computer program thereon, and when the computer program is run by a processor, executes the communication method provided in any of the above embodiments.

[0127] An embodiment of the present invention further provides another communication device, including a memory and a processor, wherein the memory stores a computer program that can be run on the processor, and when the processor runs the computer program, it executes the communication method provided in any of the above embodiments.

[0128] Those skilled in the art will understand that all or part of the steps in the various methods of the above embodiments can be completed by instructing the relevant hardware through a program, and the program can be stored in a computer-readable storage medium, which may include: ROM, RAM, disk or CD, etc.

[0129] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be based on the scope defined by the claims.

Claims

1. A communication method, characterized in that: include: Acquire first configuration information, where the first configuration information is used to configure a first time slot, where the first time slot is a time slot for configuring sub-band full-duplex; In the inactive state or the connected state, the configuration grant is used to perform uplink data transmission in the first time slot.

2. The communication method according to claim 1, characterized in that: The first configuration information further includes: a search space, where the search space is used to detect sub-band full-duplex configuration information.

3. The communication method according to claim 1 or 2, characterized in that: The first configuration information also includes: resource parameters, and the resource parameters are used to determine the uplink frequency domain resources for using the configuration authorization.

4. The communication method according to claim 3, characterized in that: The bandwidth of the uplink frequency domain resources is associated with the frequency band bandwidth of the activated sub-band full-duplex, or the starting position of the uplink frequency domain resources is associated with the frequency band bandwidth of the activated sub-band full-duplex, or the number of symbols occupied by the uplink frequency domain resources is associated with the number of symbols occupied by the activated sub-band full-duplex.

5. The communication method according to claim 1, wherein: Also includes: A configuration grant located in a common uplink time slot and a configuration grant located in a first time slot are detected, and the configuration grant located in the first time slot is used for uplink data transmission.

6. The communication method according to claim 5, characterized in that: Also includes: Indication information is received, where the indication information is used to indicate the use of the configuration grant located in the first time slot for uplink data transmission.

7. The communication method according to claim 1, characterized in that: In the inactive state, the amount of data used for uplink data transmission using the configuration grant is less than a preset bit data amount threshold.

8. The communication method according to claim 1, wherein: Also includes: The first configuration information is not obtained, and the configuration authorization located in the normal uplink time slot is used for uplink data transmission.

9. The communication method according to claim 1, wherein: Also includes: Acquire second configuration information, where the second configuration information is used to configure a logical channel corresponding to data that uses the configuration authorization to perform uplink data transmission in the first time slot.

10. The communication method according to claim 1, characterized in that: Also includes: No specific search space is configured in the first time slot; or there is no need to monitor a random access response in the first time slot; Alternatively, the priority of data transmitted by the configuration authorization in the first time slot is greater than or equal to a preset threshold; Alternatively, there is no need to receive downlink data scheduled by downlink control signaling including a priority indication in the first time slot; or, there is no need to apply a measurement gap in the first time slot, and configuration authorization is used in the first time slot for uplink data transmission.

11. A communication method, characterized in that: include: Sending first configuration information, where the first configuration information is used to configure a first time slot, where the first time slot is a time slot for configuring sub-band full-duplex; Send indication information, where the indication information indicates to use the configuration grant to perform uplink data transmission in the first time slot.

12. The communication method according to claim 11, characterized in that: The first configuration information further includes: a search space, where the search space is used to detect sub-band full-duplex configuration information.

13. The communication method according to claim 11 or 12, characterized in that: The first configuration information also includes: resource parameters, and the resource parameters are used to determine the uplink frequency domain resources for using the configuration authorization.

14. The communication method according to claim 13, characterized in that: The bandwidth of the uplink frequency domain resources is associated with the frequency band bandwidth of the activated sub-band full-duplex, or the starting position of the uplink frequency domain resources is associated with the frequency band bandwidth of the activated sub-band full-duplex, or the number of symbols occupied by the uplink frequency domain resources is associated with the number of symbols occupied by the activated sub-band full-duplex.

15. A communication device, characterized in that: include: An acquiring unit, configured to acquire first configuration information, where the first configuration information is used to configure a first time slot, where the first time slot is a time slot for configuring sub-band full-duplex; The data transmission unit is used to perform uplink data transmission in the first time slot using the configuration grant in an inactive state or a connected state.

16. A communication device, characterized in that: include: A first sending unit, configured to send first configuration information, where the first configuration information is used to configure a first time slot, where the first time slot is a time slot for configuring sub-band full-duplex; The second sending unit is used to send indication information, where the indication information indicates to use the configuration authorization to perform uplink data transmission in the first time slot.

17. A computer-readable storage medium, wherein the computer-readable storage medium is a non-volatile storage medium or a non-transient storage medium, and a computer program is stored thereon, wherein: When the computer program is executed by a processor, the steps of the communication method according to any one of claims 1 to 14 are executed.

18. A communication device, comprising a memory and a processor, wherein the memory stores a computer program that can be run on the processor, characterized in that: The processor executes the steps of the communication method according to any one of claims 1 to 10 when running the computer program; or executes the steps of the communication method according to any one of claims 11 to 14 when running the computer program.

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