Method and device for determining carrier state of sidelink

Abstract

The embodiment of the invention discloses a method and device for determining the state of sidelink carriers, which can be applied to the technical field of communication, and the method executed by terminal equipment comprises the following steps: when the terminal equipment performs sidelink communication through a plurality of SL carriers, according to a measurement result of a first parameter associated with the sidelink SL carriers, determining the state of the sidelink SL carriers according to the measurement result of the first parameter associated with the sidelink SL carriers; and determining whether the state of the SL carrier is an activated state or a deactivated state. Therefore, the accuracy of the determined SL carrier state is improved.

Description

Method and device for determining side link carrier state

[0001] The present disclosure relates to the field of communication technology, and in particular to a method and device for determining a sidelink carrier state.

[0002] In order to support direct communication between terminals, the sidelink (SL) communication mode is introduced. The sidelink can use carrier aggregation (CA) to aggregate multiple carriers (CC). When the terminal sends sidelink data on the aggregated carrier, it needs to determine the status of the aggregated carrier.

[0003] Summary of the invention

[0004] The embodiments of the present disclosure provide a method and apparatus for determining a sidelink carrier state.

[0005] In a first aspect, an embodiment of the present disclosure provides a method for determining a sidelink carrier state, the method being performed by a terminal device, the method comprising:

[0006] According to the measurement result of the first parameter associated with the sidelink SL carrier, the state of the SL carrier is determined, wherein the state of the SL carrier includes an activation state or a deactivation state, and the terminal device performs sidelink communication through multiple SL carriers.

[0007] In the present disclosure, when a terminal device performs sidelink communication through multiple SL carriers, the state of the SL carrier can be determined to be an activated state or a deactivated state according to the measurement result of the first parameter associated with the sidelink SL carrier, thereby improving the accuracy of the determined SL carrier state.

[0008] In a second aspect, an embodiment of the present disclosure provides another method for determining a sidelink carrier state, the method being executed by a terminal device, and the method comprising:

[0009] Obtaining third indication information;

[0010] According to the third indication information associated with the sidelink SL carrier, the state of the SL carrier is determined, wherein the state of the SL carrier includes an activation state or a deactivation state, and the terminal device performs sidelink communication through multiple SL carriers.

[0011] In the present disclosure, when the terminal device performs sidelink communication through multiple SL carriers, after obtaining the third indication information, the state of the SL carrier is determined according to the second indication information associated with the sidelink SL carrier, thereby improving the accuracy of the determined SL carrier state.

[0012] In a third aspect, an embodiment of the present disclosure provides another method for determining a sidelink carrier state, the method being executed by a terminal device, and the method comprising:

[0013] According to a first timer associated with a sidelink SL carrier, a state of the SL carrier is determined, wherein the state of the SL carrier includes an activation state or a deactivation state, and the terminal device performs sidelink communication through multiple SL carriers.

[0014] In the present disclosure, when a terminal device performs sidelink communication via multiple SL carriers, the state of the SL carrier is determined according to a first timer associated with the sidelink SL carrier, thereby improving the accuracy of the determined SL carrier state.

[0015] In a fourth aspect, an embodiment of the present disclosure provides a communication device, including:

[0016] The processing module is used to determine the state of the sidelink SL carrier based on the measurement result of the first parameter associated with the SL carrier, wherein the state of the SL carrier includes an activation state or a deactivation state, and the terminal device performs sidelink communication through multiple SL carriers.

[0017] In a fifth aspect, an embodiment of the present disclosure provides a communication device, including:

[0018] A transceiver module, used for obtaining third indication information;

[0019] The processing module is used to determine the state of the side link SL carrier according to the third indication information associated with the SL carrier, wherein the state of the SL carrier includes an activation state or a deactivation state, and the terminal device performs side link communication through multiple SL carriers.

[0020] In a sixth aspect, an embodiment of the present disclosure provides a communication device, including:

[0021] The processing module is used to determine the state of the side link SL carrier according to the first timer associated with the SL carrier, wherein the state of the SL carrier includes an activation state or a deactivation state, and the terminal device performs side link communication through multiple SL carriers.

[0022] In a seventh aspect, an embodiment of the present disclosure provides a communication device, which includes a processor. When the processor calls a computer program in a memory, it executes the method of the first aspect, or the method of the second aspect, or the method of the third aspect.

[0023] In an eighth aspect, an embodiment of the present disclosure provides a communication device, which includes a processor and a memory, in which a computer program is stored; the processor executes the computer program stored in the memory to enable the communication device to execute the method of the first aspect above, or execute the method of the second aspect above, or execute the method of the third aspect above.

[0024] In a ninth aspect, an embodiment of the present disclosure provides a communication device, which includes a processor and an interface circuit, wherein the interface circuit is used to receive code instructions and transmit them to the processor, and the processor is used to run the code instructions so that the device executes the method of the first aspect above, or executes the method of the second aspect above, or executes the method of the third aspect above.

[0025] In the tenth aspect, an embodiment of the present disclosure provides a system for determining the side link carrier status, the system comprising the communication device of the fourth aspect, the communication device of the fifth aspect, and the communication device of the sixth aspect, or the system comprises the communication device of the seventh aspect, or the system comprises the communication device of the eighth aspect, or the system comprises the communication device of the ninth aspect.

[0026] In the twelfth aspect, an embodiment of the present invention provides a computer-readable storage medium for storing instructions for the above-mentioned terminal device. When the instructions are executed, the terminal device executes the method of the above-mentioned first aspect, or executes the method of the above-mentioned second aspect, or executes the method of the above-mentioned first aspect.

[0027] In a fourteenth aspect, the present disclosure further provides a computer program product comprising a computer program, which, when executed on a computer, enables the computer to execute the method of the first aspect, or the method of the second aspect, or the method of the first aspect.

[0028] In a sixteenth aspect, the present disclosure provides a chip system, which includes at least one processor and an interface, for supporting a terminal device to implement the functions involved in the first aspect, or for supporting a terminal device to implement the functions involved in the second aspect, or for supporting a terminal device to implement the functions involved in the third aspect. For example, determining or processing at least one of the data and information involved in the above method. In one possible design, the chip system also includes a memory, which is used to store computer programs and data necessary for the terminal device. The chip system can be composed of chips, or it can include chips and other discrete devices.

[0029] In an eighteenth aspect, the present disclosure provides a computer program, which, when executed on a computer, enables the computer to execute the method of the first aspect, or the method of the second aspect, or the method of the third aspect.

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the background technology, the drawings required for use in the embodiments of the present disclosure or the background technology will be described below.

[0031] FIG1 is a schematic diagram of the architecture of a communication system provided by an embodiment of the present disclosure;

[0032] FIG2 is a flow chart of a method for determining a sidelink carrier state provided by an embodiment of the present disclosure;

[0033] FIG3 is a flow chart of another method for determining a sidelink carrier state provided by an embodiment of the present disclosure;

[0034] FIG4 is a flow chart of another method for determining a sidelink carrier state provided by an embodiment of the present disclosure;

[0035] FIG5 is a flow chart of another method for determining a sidelink carrier state provided by an embodiment of the present disclosure;

[0036] FIG6 is a flow chart of another method for determining a sidelink carrier state provided by an embodiment of the present disclosure;

[0037] FIG7 is a flow chart of another method for determining a sidelink carrier state provided by an embodiment of the present disclosure;

[0038] FIG8 is a flow chart of another method for determining a sidelink carrier state provided by an embodiment of the present disclosure;

[0039] FIG9 is a flow chart of another method for determining a sidelink carrier state provided by an embodiment of the present disclosure;

[0040] FIG10 is a schematic diagram of the structure of a communication device provided in an embodiment of the present disclosure;

[0041] FIG11 is a schematic diagram of the structure of another communication device provided in an embodiment of the present disclosure;

[0042] FIG. 12 is a schematic diagram of the structure of a chip provided in an embodiment of the present disclosure.

[0043] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0044] For ease of understanding, the terms involved in the present disclosure are first introduced.

[0045] 1. Channel busy ratio (CBR)

[0046] CBR is a parameter that measures the occupancy of a sub-channel on a frequency band. The terminal device performs CBR measurement on the transmission resource pool according to the configuration on the network side. The lower the CBR value, the fewer terminal devices occupy the sub-channel of the resource pool to send data, and the lower the conflict of selecting this resource pool to send data. In the Sidelink of the 5G wireless network, one carrier can support multiple transmission resource pools, and the terminal device performs CBR measurement on multiple transmission resource pools respectively.

[0047] 2. Carrier aggregation (CA)

[0048] Carrier aggregation is a technology that increases transmission bandwidth to meet the requirements of single-user peak rate and system capacity improvement. Carrier aggregation technology can aggregate multiple carriers (component carriers, CCs) together, effectively improving the uplink and downlink transmission rates.

[0049] Please refer to FIG. 1, which is a schematic diagram of the architecture of a communication system provided by an embodiment of the present disclosure. The communication system may include, but is not limited to, a network device and a terminal device. The number and form of devices shown in FIG. 1 are only used for example and do not constitute a limitation on the embodiment of the present disclosure. In actual applications, two or more network devices and two or more terminal devices may be included. The communication system shown in FIG. 1 takes two terminal devices, namely, terminal device 12 and terminal device 13, and a network device 11 as an example.

[0050] It should be noted that the technical solutions of the embodiments of the present disclosure can be applied to various communication systems, such as long term evolution (LTE) system, fifth generation (5G) mobile communication system, 5G new radio (NR) system, or other future new mobile communication systems.

[0051] The network device 11 in the embodiment of the present disclosure includes an evolved NodeB (eNB), a transmission reception point (TRP), a next generation NodeB (gNB) in the NR system, a base station in other future mobile communication systems, or an access node in a wireless fidelity (WiFi) system, etc. The embodiment of the present disclosure does not limit the specific technology and specific device form adopted by the network device. The network device provided in the embodiment of the present disclosure may be composed of a central unit (CU) and a distributed unit (DU), wherein the CU may also be referred to as a control unit. The CU-DU structure may be used to split the protocol layer of the network device, such as a base station, and the functions of some protocol layers are placed in the CU for centralized control, and the functions of the remaining part or all of the protocol layers are distributed in the DU, and the DU is centrally controlled by the CU.

[0052] The terminal device 12 and the terminal device 13 in the embodiment of the present disclosure are entities for receiving or transmitting signals on the user side, such as mobile phones. The terminal device may also be referred to as a terminal device (terminal), a user equipment (UE), a mobile station (MS), a mobile terminal device (MT), etc. The terminal device may be a car with communication function, a smart car, a mobile phone, a wearable device, a tablet computer (Pad), a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control (industrial control), a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in smart grid (smart grid), a wireless terminal device in transportation safety (transportation safety), a wireless terminal device in a smart city (smart city), a wireless terminal device in a smart home (smart home), etc. The embodiment of the present disclosure does not limit the specific technology and specific device form adopted by the terminal device.

[0053] It can be understood that the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution provided by the embodiment of the present disclosure. A person skilled in the art can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution provided by the embodiment of the present disclosure is also applicable to similar technical problems.

[0054] It should be noted that in the present disclosure, a method for determining the side link carrier state provided in any embodiment can be executed alone, or can be executed in combination with possible implementation methods in other embodiments, or can be executed in combination with any technical solution in the related technology.

[0055] The embodiments of the present disclosure are now further described in conjunction with the accompanying drawings and specific implementation methods.

[0056] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the embodiments of the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0057] The terms used in the disclosed embodiments are only for the purpose of describing specific embodiments and are not intended to limit the disclosed embodiments. The singular forms of "a", "an" and "the" used in the disclosed embodiments and the appended claims are also intended to include plural forms unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0058] Depending on the context, the words "if" and "in response to" as used herein may be interpreted as "at" or "when" or "in response to determining."

[0059] Embodiments of the present disclosure are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present disclosure, and should not be construed as limiting the present disclosure.

[0060] In the present disclosure, there are two ways of allocating transmission resources for sidelink communication, one is the way of dynamic network scheduling (mode1, the first mode), and the other is the way in which the terminal device autonomously selects from the resource pool configured or preconfigured by the network device (mode2, the second mode). The first mode is that the network device dynamically allocates transmission resources on the sidelink to the terminal device based on the cache data reported by the terminal device. The second mode is that the terminal device randomly selects transmission resources from the resource pool configured or preconfigured by the network device. The network device can indicate the allocation method of the transmission resources of the terminal device through RRC signaling. For the specific method of activating and deactivating aggregated carriers by terminal devices under different allocation modes, please refer to the detailed description of any embodiment of the present disclosure.

[0061] Please refer to Figure 2, which is a schematic flow chart of a method for determining a sidelink carrier state provided by an embodiment of the present disclosure, the method being executed by a terminal device. As shown in Figure 2, the method may include but is not limited to the following steps:

[0062] Step 201, determine the state of the sidelink SL carrier according to the measurement result of the first parameter associated with the SL carrier, wherein the state of the SL carrier includes an activation state or a deactivation state, and the terminal device performs sidelink communication through multiple SL carriers.

[0063] The first parameter may be CBR, Reference Signal Receiving Power (RSRP), etc., and the present disclosure does not limit this.

[0064] In the present disclosure, the services of the terminal device may be volatile and sudden, that is, the service volume is small in a certain period of time, and the service volume is large in a certain period of time. Therefore, when the service volume of the terminal device is relatively small, the CC in the configured CC set can be activated / deactivated according to the current service situation of the terminal device. For the deactivated carrier, the terminal device does not need to monitor the sidelink control information (SCI), which can achieve better power saving effect.

[0065] In the present disclosure, when the terminal device is in the first mode or in the second mode and performs SL communication through multiple SL carriers, it is necessary to determine the state of the SL carrier. The first parameter can be measured to determine the measurement result, and the measurement result of the first parameter associated with the SL carrier can be compared with the threshold value to determine the state of the SL carrier. For example, when the measurement result of the first parameter is greater than or equal to the threshold value, the state of the SL carrier is determined to be a deactivated state, and the SL carrier is deactivated. Alternatively, when the measurement result of the first parameter is less than the threshold value, the state of the SL carrier is determined to be an activated state.

[0066] In addition, when the state of the SL carrier is deactivated, the terminal device cannot perform SL communication on the carrier. For example, the terminal device cannot transmit the physical sidelink shared channel (PSSCH), physical sidelink control channel (PSCCH), physical sidelink feedback channel (PSFCH), synchronization signal block (SSB), etc. on the deactivated carrier. When the state of the SL carrier is activated, the terminal device can perform SL communication on the carrier.

[0067] In the present disclosure, when a terminal device performs sidelink communication via multiple SL carriers, the state of the SL carrier can be determined to be an activated state or a deactivated state based on the measurement result of the first parameter associated with the SL carrier, thereby improving the accuracy of the determined SL carrier state.

[0068] Please refer to Figure 3, which is a schematic flow chart of a method for determining a sidelink carrier state provided by an embodiment of the present disclosure, and the method is executed by a terminal device. As shown in Figure 3, the method may include but is not limited to the following steps:

[0069] Step 301: Acquire measurement configuration information of a first parameter.

[0070] In the present disclosure, the measurement configuration information is configuration information related to measuring the first parameter. For example, when the first parameter is CBR, the measurement configuration information may include: measurement window size, received signal strength indicator (rRSSI), etc., and the present disclosure does not limit this.

[0071] In the present disclosure, the measurement configuration information of the first parameter can be obtained in any of the following ways: receiving the measurement configuration information of the first parameter sent by the network device; or, obtaining the measurement configuration information of the first parameter from the system information block SIB; or, obtaining the measurement configuration information of the first parameter from pre-configuration information.

[0072] Optionally, the terminal device may obtain the measurement configuration information by receiving signaling sent by the network device.

[0073] Optionally, the terminal device is in a radio resource control (RRC) connected state (CONNECTED), and the terminal device can obtain measurement configuration information of the first parameter through dedicated RRC signaling.

[0074] Optionally, when the terminal device is in an RRC idle state (IDLE) or an RRC inactive state (INACTIVE), the terminal device may obtain measurement configuration information of the first parameter from a system information block (SIB). When the terminal device is in RRC IDLE or RRC INACTIVE but does not receive the SIB, the measurement configuration information of the first parameter may be obtained from pre-configuration information.

[0075] Optionally, when the terminal device is out of coverage (OOC), the terminal device may obtain measurement configuration information of the first parameter from pre-configuration information.

[0076] Afterwards, the terminal device may perform corresponding measurements on the first parameter according to the measurement configuration information to determine the measurement value of the first parameter.

[0077] Step 302: Determine a measured value of a first parameter associated with the SL carrier.

[0078] In the present disclosure, when the first parameter is CBR, the terminal device can measure the CBR of one or more resource pools on the SL carrier according to the measurement configuration information, and determine the CBR of one or more resource pools on the SL carrier, so as to determine the CBR of the SL carrier according to the CBR of one or more resource pools on the SL carrier. For example, when only one resource pool is configured on the SL carrier, the CBR of the one resource pool can be determined as the CBR of the SL carrier. When multiple resource pools are configured on the SL carrier, the CBR of any one of the multiple resource pools can be determined as the CBR of the SL carrier.

[0079] Optionally, the CBR of the first resource pool selected by the terminal device on the SL carrier can also be determined as the CBR of the SL carrier. The first resource pool selected by the terminal device on the SL carrier can be the resource pool where the terminal device first measures the CBR on the SL carrier, or it can be the resource pool to which the resource selected by the terminal device for the first time on the SL carrier belongs, or it can be the resource pool selected by the terminal device for the first time on the SL carrier, etc., and the present disclosure does not limit this.

[0080] Optionally, any one of the maximum value, minimum value or average value of the CBR of one or more resource pools on the SL carrier may be determined as the CBR of the SL carrier.

[0081] Exemplarily, assume that three resource pools are configured on the SL carrier, the CBR measured by resource pool #1 is x, the CBR measured by resource pool #2 is y, and the CBR measured by resource pool #3 is z, and x>y>z. When the terminal device determines the maximum value of the CBRs of one or more resource pools on the SL carrier as the CBR of the SL carrier, the CBR of the SL carrier is x. When the terminal device determines the minimum value of the CBRs of one or more resource pools on the SL carrier as the CBR of the SL carrier, the CBR of the SL carrier is z. When the terminal device determines the average value of the CBRs of one or more resource pools on the SL carrier as the CBR of the SL carrier, the CBR of the SL carrier is (x+y+z) / 3.

[0082] In the present disclosure, the triggering condition for measuring the first parameter, the relationship between the CBR associated with the carrier and the CBR of the resource pool configured on the carrier, etc., are not limited in the present disclosure.

[0083] It should be noted that the above-mentioned measurement value of the first parameter associated with the SL carrier is only described for one carrier among the aggregated multiple carriers. In fact, the terminal device needs to determine the measurement value of the first parameter associated with each SL carrier among the aggregated multiple SL carriers to further determine whether each aggregated SL carrier is in an activated state or a deactivated state.

[0084] In addition, the above only describes the process of measuring the resource pool on the SL carrier based on the measurement configuration information to obtain the measurement value of the first parameter associated with the SL carrier when the first parameter is CBR. When the first parameter is other, such as RSRP, etc., the measurement value of the first parameter associated with the SL carrier can also be obtained based on the corresponding measurement configuration information. The present invention does not make specific limitations.

[0085] Step 303: Obtain a threshold value.

[0086] In the present disclosure, the threshold value may be obtained in any of the following ways: receiving the threshold value sent by a network device; obtaining the threshold value from a system information block SIB; or obtaining the threshold value from pre-configuration information.

[0087] Optionally, the threshold value may be obtained by receiving a signaling sent by a network device.

[0088] Optionally, when the terminal device is in the RRC CONNECTED state, the terminal device may obtain the threshold value through dedicated RRC signaling.

[0089] Optionally, when the terminal device is in the RRC IDLE state or the terminal device is in the RRC INACTIVE state, the terminal device may obtain the threshold value from the SIB.

[0090] Optionally, when the terminal device is in the OOC state, the threshold value can be obtained from pre-configuration information.

[0091] Step 304: When the measurement result of the first parameter associated with the SL carrier is greater than or equal to the threshold value, determine that the state of the SL carrier is a deactivated state.

[0092] Exemplarily, when the first parameter is the channel occupancy rate CBR, when the CBR of the SL carrier is greater than or equal to a threshold value, it is determined that the state of the SL carrier is a deactivated state.

[0093] Step 305: When the measurement result of the first parameter associated with the SL carrier is less than the threshold value, determine that the state of the SL carrier is an activated state.

[0094] Exemplarily, when the first parameter is the channel occupancy rate CBR, when the CBR of the SL carrier is less than a threshold value, it is determined that the state of the SL carrier is an activated state.

[0095] The method for determining the sidelink carrier state involved in the embodiment of the present disclosure may include at least one of steps 301 to 305. For example, step 304 may be implemented as an independent embodiment, step 305 may be implemented as an independent embodiment, and step 304+305 may be implemented as an independent embodiment, but is not limited thereto. In this implementation or embodiment, in the absence of contradiction, each step may be independent, arbitrarily combined, or exchanged in order, and the optional methods or optional examples may be arbitrarily combined, and may be arbitrarily combined with any steps of other implementations or other embodiments.

[0096] In the present disclosure, after obtaining the measurement configuration information of the first parameter, the terminal device can determine the measurement value of the first parameter associated with the SL carrier, and determine the activation and deactivation status of the SL carrier by comparing the measurement value with the obtained threshold value. When the measurement result of the first parameter associated with the SL carrier is greater than or equal to the threshold value, the state of the SL carrier is determined to be a deactivated state, and when the measurement result of the first parameter associated with the SL carrier is less than the threshold value, the state of the SL carrier is determined to be an activated state.

[0097] Please refer to Figure 4, which is a schematic flow chart of a method for determining a sidelink carrier state provided by an embodiment of the present disclosure, and the method is executed by a terminal device. As shown in Figure 4, the method may include but is not limited to the following steps:

[0098] Step 401, determine the state of the sidelink SL carrier according to the measurement result of the first parameter associated with the SL carrier, wherein the state of the SL carrier includes an activation state or a deactivation state, and the terminal device performs sidelink communication through multiple SL carriers.

[0099] In the present disclosure, the specific implementation process of step 401 can be found in the detailed description of any embodiment of the present disclosure, and will not be repeated here.

[0100] Step 402, in response to the terminal device being in the first mode or in the second mode of the radio resource control RRC connection state, first indication information is sent to the network device, the first indication information is used to indicate the state of the SL carrier, the first mode is that the network device schedules sidelink transmission resources for the terminal device, and the second mode is that the terminal device autonomously selects sidelink transmission resources.

[0101] In the present disclosure, when the terminal device is in the first mode or in the second mode of the radio resource control RRC connection state, a first indication information can be sent to the network device to report the status of the SL carrier to the network device.

[0102] Optionally, the first indication information may be carried in a media access control layer control element (MAC CE) so as to send the first indication information to the network device through the MAC CE.

[0103] Optionally, a first bitmap Bitmap can be carried in the MAC CE, and the state of the SL carrier is indicated by the first Bitmap. The first Bitmap includes at least one bit, each bit corresponds to an index identifier of an SL carrier, and each bit is used to indicate the state of the SL carrier corresponding to the index identifier. When the bit is a first value, it indicates that the state of the SL carrier corresponding to the bit is an activated state. When the bit is a second value, it indicates that the state of the SL carrier corresponding to the bit is a deactivated state. Among them, the index identifier can be any identification information used to uniquely determine the SL carrier.

[0104] Exemplarily, assuming that the i-th bit indicates the state of the carrier associated with the SL carrier identifier i, the first value is 1 for the activated state, and the second value is 0 for the deactivated state. When the i-th bit is 1, it indicates that the carrier associated with the SL carrier identifier i is in the activated state. When the i-th bit is 0, it indicates that the carrier associated with the SL carrier identifier i is in the deactivated state.

[0105] Exemplarily, assuming that the i-th bit indicates the state of the carrier associated with the SL carrier identifier i, the first value is 0 for the activated state, and the second value is 1 for the deactivated state. When the i-th bit is 0, it indicates that the carrier associated with the SL carrier identifier i is in the activated state. When the i-th bit is 1, it indicates that the carrier associated with the SL carrier identifier i is in the deactivated state.

[0106] Optionally, the first indication information may be carried in sidelink terminal equipment information (sidelink UE information, SUI) and / or terminal equipment assistance information (UE assistance information, UAI) to send the first indication information to the network device through SUI and / or UAI.

[0107] Optionally, an index identifier corresponding to the deactivated SL carrier may be carried in the SUI and / or UAI to indicate the SL carrier in the deactivated state.

[0108] Optionally, when the terminal device is in the second mode, when it is determined that the SL carrier state is a deactivated state, resource reselection and / or carrier reselection can be triggered, and resources can be reselected on the reselected carrier.

[0109] In addition, after activating the SL carrier, the terminal device sends a first indication message to the network device to indicate the activated SL carrier. After deactivating the SL carrier, the terminal device sends a first indication message to the network device to indicate the deactivated SL carrier. That is to say, when the state of the SL carrier changes, a first indication message may be sent to the network device to indicate the changed state of the SL carrier. When the state of the SL carrier has not changed, the first indication message may not be sent to the network device. The present disclosure does not limit the timing of sending the first indication message to the network device.

[0110] The method for determining the sidelink carrier state involved in the embodiment of the present disclosure may include at least one of step 401 to step 402. For example, step 401 can be implemented as an independent embodiment, step 402 can be implemented as an independent embodiment, and step 401+step 402 can be implemented as an independent embodiment, but are not limited thereto. In this implementation or embodiment, in the absence of contradiction, each step can be independent, arbitrarily combined, or exchanged in order, and the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other implementations or other embodiments.

[0111] In the present disclosure, after determining the state of the SL carrier based on the measurement result of the first parameter associated with the SL carrier, when the terminal device is in a first mode or in a second mode of a radio resource control RRC connection state, a first indication information for indicating the state of the SL carrier can be sent to a network device.

[0112] Please refer to Figure 5, which is a schematic flow chart of a method for determining a sidelink carrier state provided by an embodiment of the present disclosure, and the method is executed by a terminal device. As shown in Figure 5, the method may include but is not limited to the following steps:

[0113] Step 501, determine the state of the sidelink SL carrier according to the measurement result of the first parameter associated with the SL carrier, wherein the state of the SL carrier includes an activation state or a deactivation state, and the terminal device performs sidelink communication through multiple SL carriers.

[0114] In the present disclosure, the specific implementation process of step 501 can be found in the detailed description of any embodiment of the present disclosure, and will not be repeated here.

[0115] Step 502: Send second indication information to the opposite terminal device, where the second indication information is used to indicate the state of the SL carrier.

[0116] In the present disclosure, second indication information may be generated based on the state of the SL carrier, and the second indication information may be sent to the opposite terminal device to indicate the state of the SL carrier of the opposite terminal device.

[0117] Optionally, the terminal device may send the second indication information to the opposite terminal device via PC5-RRC signaling and / or PC5 MAC CE. Exemplarily, if there is a unicast connection between the terminal device and the opposite terminal device, the terminal device may send the second indication information to the opposite terminal device via PC5-RRC signaling and / or PC5 MAC CE. If the terminal device and the opposite terminal device receive the same multicast and / or broadcast service, the terminal device may send the second indication information to the opposite terminal device via PC5 MAC CE.

[0118] Optionally, the terminal device may send a PC5 MAC CE carrying the second indication information by using a layer 2 identifier (L2ID) associated with a configured multicast and / or broadcast service.

[0119] Optionally, an index identifier corresponding to the deactivated SL carrier may be carried in the PC5RRC signaling to indicate the SL carrier in the deactivated state.

[0120] Optionally, the first bitmap Bitmap can be carried in the PC5 MAC CE, and the first Bitmap includes at least one bit, each bit corresponds to an index identifier of an SL carrier, and each bit is used to indicate the state of the SL carrier corresponding to the index identifier. When the bit is a first value, it indicates that the state of the SL carrier corresponding to the bit is an activated state. When the bit is a second value, it indicates that the state of the SL carrier corresponding to the bit is a deactivated state. Among them, the index identifier can be any identification information used to uniquely determine the SL carrier.

[0121] Exemplarily, assuming that the i-th bit indicates the state of the carrier associated with the SL carrier identifier i, the first value is 1 for the activated state, and the second value is 0 for the deactivated state. When the i-th bit is 1, it indicates that the carrier associated with the SL carrier identifier i is in the activated state. When the i-th bit is 0, it indicates that the carrier associated with the SL carrier identifier i is in the deactivated state.

[0122] Exemplarily, assuming that the i-th bit indicates the state of the carrier associated with the SL carrier identifier i, the first value is 0 for the activated state, and the second value is 1 for the deactivated state. When the i-th bit is 0, it indicates that the carrier associated with the SL carrier identifier i is in the activated state. When the i-th bit is 1, it indicates that the carrier associated with the SL carrier identifier i is in the deactivated state.

[0123] In addition, after activating the SL carrier, the terminal device sends a second indication message to the opposite terminal device to indicate the activated SL carrier. After deactivating the SL carrier, the terminal device sends a second indication message to the opposite terminal device to indicate the deactivated SL carrier. That is to say, when the state of the SL carrier changes, a second indication message may be sent to the opposite terminal device to indicate the changed state of the SL carrier. When the state of the SL carrier has not changed, the second indication message may not be sent to the opposite terminal device. The present disclosure does not limit the timing of sending the second indication message to the opposite terminal device.

[0124] The method for determining the sidelink carrier state involved in the embodiment of the present disclosure may include at least one of steps 501 to 502. For example, step 501 can be implemented as an independent embodiment, step 502 can be implemented as an independent embodiment, and step 501+502 can be implemented as an independent embodiment, but it is not limited to this. In this embodiment or example, unless there is a contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other embodiments. In the present disclosure, after determining the state of the SL carrier based on the measurement result of the first parameter associated with the sidelink SL carrier, a second indication information for indicating the state of the SL carrier can be sent to the opposite terminal device.

[0125] Please refer to Figure 6, which is a schematic flow chart of a method for determining a sidelink carrier state provided by an embodiment of the present disclosure, the method being executed by a terminal device. As shown in Figure 6, the method may include but is not limited to the following steps:

[0126] Step 601: Obtain third indication information.

[0127] The third indication information may be used to indicate that the SL carrier of the terminal device is in an activated state or a deactivated state. The third indication information may be SL carrier configuration information, or a medium access control control element MAC CE, etc., which is not limited in the present disclosure.

[0128] In the present disclosure, the third indication information may be determined by any of the following methods: receiving the third indication information sent by a network device; or obtaining the third indication information from a system information block SIB; or obtaining the third indication information from pre-configuration information.

[0129] Optionally, when the terminal device is in the first mode or in the second mode of the radio resource control RRC connection state, the terminal device can receive third indication information sent by the network device.

[0130] Optionally, when the third indication information is SL carrier configuration information and the terminal device is in the RRC CONNECTED state, the terminal device can obtain the third indication information through dedicated RRC signaling.

[0131] Optionally, when the third indication information is SL carrier configuration information and the terminal device is in the RRC IDLE state, or the terminal device is in the RRC INACTIVE state, the terminal device can obtain the third indication information from the SIB.

[0132] Optionally, when the third indication information is SL carrier configuration information and the terminal device is in the OOC state, the third indication information can be obtained from the pre-configuration information.

[0133] Step 602: Determine the state of the sidelink SL carrier according to the third indication information associated with the SL carrier, wherein the state of the SL carrier includes an activation state or a deactivation state, and the terminal device performs sidelink communication through multiple SL carriers.

[0134] Optionally, when the terminal device is in the first mode or in the second mode of the radio resource control RRC connection state, the terminal device can receive the third indication information sent by the network device, and the third indication information can be MAC CE. The MAC CE includes a second bitmap Bitmap, and the second bitmap is used to indicate the terminal device to activate or deactivate the SL carrier. The second bitmap includes at least one bit, each bit corresponds to an index identifier corresponding to an SL carrier, and the bit is used to indicate that the terminal activates or deactivates the SL carrier corresponding to the index identifier. When the bit is a first value, the terminal activates the SL carrier corresponding to the bit, and the state of the SL carrier is an activated state. When the bit is a second value, the terminal deactivates the SL carrier corresponding to the bit, and the state of the SL carrier is a deactivated state. Among them, the first mode is that the network device schedules sidelink transmission resources for the terminal device, and the second mode is that the terminal device autonomously selects sidelink transmission resources.

[0135] For example, if an SL carrier of Indexi is configured, Ci in the second bitmap corresponds to the SL carrier corresponding to index identifier i. When Ci is set to 1, the terminal device activates the SL carrier corresponding to index identifier i, and the SL carrier corresponding to index identifier i is in an activated state. When Ci is set to 0, the terminal device deactivates the SL carrier corresponding to index identifier i, and the SL carrier corresponding to index identifier i is in a deactivated state. If the terminal device is not configured with the SL carrier corresponding to index identifier i, the terminal device ignores Ci.

[0136] Optionally, when the terminal device is in the first mode or the second mode, the third indication information may be SL carrier configuration information.

[0137] A possible implementation method is to carry a carrier state parameter in the SL carrier configuration information, and indicate the activation and deactivation status of the SL carrier through the carrier state parameter, wherein the carrier state parameter may be carrierstate, and the specific naming method of the carrier state parameter is not specifically limited in the present invention. Exemplarily, when the carrierstate configured in the SL carrier configuration information is the third value (for example, activated), the SL carrier is determined to be in the activated state. Alternatively, when the carrierstate configured in the SL carrier configuration information is the fourth value (for example, deactivated), the SL carrier is determined to be in the deactivated state.

[0138] Another possible implementation method is that the carrierstate configured in the SL carrier configuration information can only be set to activated. In this case, if the SL carrier configuration carries the carrierstate parameter, the terminal device can determine that the SL carrier is in the activated state when receiving the SL carrier configuration. If the SL carrier configuration does not carry the carrierstate parameter, the terminal device can determine that the SL carrier is in the deactivated state when receiving the SL carrier configuration.

[0139] The method for determining the sidelink carrier state involved in the embodiment of the present disclosure may include at least one of steps 601 to 602. For example, step 601 may be implemented as an independent embodiment, step 602 may be implemented as an independent embodiment, and step 601+602 may be implemented as an independent embodiment, but is not limited thereto. In this implementation or embodiment, in the absence of contradiction, each step may be independent, arbitrarily combined, or exchanged in order, and the optional methods or optional examples may be arbitrarily combined, and may be arbitrarily combined with any steps of other implementations or other embodiments.

[0140] In the present disclosure, when a terminal device performs sidelink communication through multiple SL carriers, after obtaining the third indication information, the terminal device can obtain the third indication information associated with the SL carrier, wherein the third indication information is used to indicate the activation and / or deactivation status of the SL carrier of the terminal device, and the terminal device determines the status of the SL carrier based on the third indication information.

[0141] Please refer to Figure 7, which is a schematic flow chart of a method for determining a sidelink carrier state provided by an embodiment of the present disclosure, the method being executed by a terminal device. As shown in Figure 7, the method may include but is not limited to the following steps:

[0142] Step 701, determine the state of the sidelink SL carrier according to the first timer associated with the SL carrier, wherein the state of the SL carrier includes an activation state or a deactivation state, and the terminal device performs sidelink communication through multiple SL carriers.

[0143] In the present disclosure, the terminal device performs sidelink communication via multiple SL carriers, and the terminal device may maintain an associated first timer for each SL carrier, so as to determine the state of the corresponding SL carrier according to the state of the first timer associated with each SL carrier.

[0144] For example, when the first timer times out or stops, the state of the SL carrier is determined to be a deactivated state, and the SL carrier is deactivated. Alternatively, when the first timer is running, the state of the SL carrier is determined to be an activated state.

[0145] In the present disclosure, when a terminal device performs sidelink communication through multiple SL carriers, the state of the SL carrier is determined according to a first timer associated with the sidelink SL carrier.

[0146] Please refer to Figure 8, which is a schematic flow chart of a method for determining a sidelink carrier state provided by an embodiment of the present disclosure, the method being executed by a terminal device. As shown in Figure 8, the method may include but is not limited to the following steps:

[0147] Step 801: Obtain a first timer configuration.

[0148] The first timer configuration may include the duration of the first timer, etc. The state of the first timer may be determined according to the configuration of the first timer. For example, when the timing duration of the first timer is greater than the duration in the first timer configuration, it may be determined that the first timer has timed out.

[0149] In the present disclosure, the first timer configuration can be obtained in any of the following ways: receiving the first timer configuration sent by a network device; or, obtaining the first timer configuration from a system information block SIB; or, obtaining the first timer configuration from pre-configuration information.

[0150] Optionally, the terminal device is in the RRC CONNECTED state, and the terminal device can obtain the first timer configuration through dedicated RRC signaling.

[0151] Optionally, when the terminal device is in the RRC IDLE state or the terminal device is in the RRC INACTIVE state, the terminal device may obtain the first timer configuration from the SIB.

[0152] Optionally, when the terminal device is in the OOC state, the first timer configuration can be obtained from the pre-configuration information.

[0153] Step 802: Determine the state of the sidelink SL carrier according to the first timer associated with the SL carrier, wherein the state of the SL carrier includes an activation state or a deactivation state, and the terminal device performs sidelink communication through multiple SL carriers.

[0154] In the present disclosure, the specific implementation process of step 802 can be found in the detailed description of any embodiment of the present disclosure, and will not be repeated here.

[0155] The method for determining the sidelink carrier state involved in the embodiment of the present disclosure may include at least one of steps 801 to 802. For example, step 801 may be implemented as an independent embodiment, step 802 may be implemented as an independent embodiment, and step 801+step 802 may be implemented as an independent embodiment, but are not limited thereto. In this implementation or embodiment, in the absence of contradiction, each step may be independent, arbitrarily combined, or exchanged in order, and the optional methods or optional examples may be arbitrarily combined, and may be arbitrarily combined with any steps of other implementations or other embodiments.

[0156] In the present disclosure, after obtaining the first timer configuration, the state of the sidelink SL carrier is determined according to the first timer associated with the SL carrier.

[0157] Please refer to Figure 9, which is a schematic flow chart of a method for determining a sidelink carrier state provided by an embodiment of the present disclosure, the method being executed by a terminal device. As shown in Figure 9, the method may include but is not limited to the following steps:

[0158] Step 901: Start the first timer associated with the SL carrier.

[0159] In the present disclosure, when it is determined that the SL carrier is in an activated state according to the third indication information, the first timer associated with the SL carrier is started. The third indication information can be used to indicate the activation and / or deactivation status of the SL carrier of the terminal device. The third indication information can be SL carrier configuration information, or MAC CE, etc., which is not limited in the present disclosure. For the specific implementation process of determining that the SL carrier is in an activated state according to the third indication information, please refer to the detailed description of steps 601-602 of the present disclosure, which will not be repeated here.

[0160] Optionally, when the received downlink control information (DCI) schedules SL transmission on the SL carrier, such as PSSCH transmission, a first timer associated with the SL carrier is started or restarted.

[0161] In a possible implementation, a terminal device operating in a first mode receives a DCI sent by a network device, and the DCI is used to schedule SL transmission on a SL carrier, such as PSSCH transmission. The terminal device starts a first timer associated with the SL carrier in the first time slot or the first symbol after receiving the DCI. The SL carrier is the SL carrier to which the PSSCH transmission scheduled by the DCI belongs.

[0162] Optionally, after sending the sidelink control information (SCI) on the SL carrier, the transmitting terminal device starts or restarts the first timer associated with the SL carrier, wherein the SCI is used to schedule the PSSCH transmission of the receiving terminal device on a certain carrier.

[0163] In a possible implementation, when a terminal device running in the first mode or the second mode schedules SL transmission on a SL carrier through SCI, such as PSSCH transmission, the sending terminal device starts the first timer associated with the SL carrier at the first slot or the first symbol at the end of sending SCI. The SL carrier is the SL carrier to which the PSSCH transmission scheduled by SCI belongs.

[0164] Optionally, the transmitting terminal device starts or restarts the first timer associated with the SL carrier after sending the physical sidelink shared channel (PSSCH) transmission on the SL carrier.

[0165] In a possible implementation, a transmitting terminal device operating in the first mode or the second mode starts a first timer associated with an SL carrier in the first slot or the first symbol after the transmission of the PSSCH ends, wherein the SL carrier is the SL carrier to which the PSSCH transmission belongs.

[0166] Optionally, when receiving hybrid automatic repeater request (HARQ) feedback on the SL carrier, the sending terminal device starts or restarts the first timer associated with the SL carrier.

[0167] In a possible implementation, a transmitting terminal device operating in the first mode or the second mode starts the first timer associated with the SL carrier in the first slot or the first symbol at the end of receiving the HARQ feedback. The SL carrier is the SL carrier to which the HARQ feedback belongs. The HARQ feedback is carried by PSFCH resources, and the HARQ feedback is HARQ feedback associated with any PSSCH transmission enabled by the HARQ attribute on the SL carrier.

[0168] Optionally, when receiving the SCI on the SL carrier, the receiving terminal device starts or restarts the first timer associated with the SL carrier, wherein the SCI is used to schedule the PSSCH transmission of the receiving terminal device on a certain SL carrier.

[0169] A possible implementation method is that when a transmitting terminal device operating in the first mode or the second mode schedules SL transmission on a SL carrier through SCI, such as PSSCH transmission. The receiving terminal device starts the first timer associated with the SL carrier at the first slot or the first symbol at the end of receiving the SCI. The SL carrier is the SL carrier to which the PSSCH transmission scheduled by the SCI belongs.

[0170] Optionally, when the receiving terminal device receives a PSSCH transmission on the SL carrier, it starts or restarts the first timer associated with the SL carrier.

[0171] In a possible implementation, the receiving terminal device starts a first timer associated with the SL carrier when receiving the first slot or the first symbol after the PSSCH transmission ends, wherein the SL carrier is the SL carrier to which the PSSCH transmission belongs.

[0172] Optionally, after sending the HARQ feedback on the SL carrier, the receiving terminal device starts or restarts the first timer associated with the SL carrier.

[0173] In a possible implementation, the receiving terminal device starts the first timer associated with the SL carrier in the first slot or the first symbol at the end of sending the HARQ feedback. The SL carrier is the SL carrier to which the HARQ feedback belongs. The HARQ feedback is carried by PSFCH resources, and the HARQ feedback is the HARQ feedback associated with any PSSCH transmission enabled by the HARQ attribute on the SL carrier.

[0174] Step 902: Determine the state of the sidelink SL carrier according to the first timer associated with the SL carrier, wherein the state of the SL carrier includes an activation state or a deactivation state, and the terminal device performs sidelink communication through multiple SL carriers.

[0175] In the present disclosure, the specific implementation process of step 902 can be found in the detailed description of any embodiment of the present disclosure, and will not be repeated here.

[0176] The method for determining the sidelink carrier state involved in the embodiment of the present disclosure may include at least one of step 901 to step 902. For example, step 901 can be implemented as an independent embodiment, step 902 can be implemented as an independent embodiment, and step 901+step 902 can be implemented as an independent embodiment, but are not limited thereto. In this implementation or embodiment, in the absence of contradiction, each step can be independent, arbitrarily combined, or exchanged in order, and the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other implementations or other embodiments.

[0177] In the present disclosure, after starting the first timer associated with the SL carrier, the state of the SL carrier is determined according to the first timer associated with the sidelink SL carrier.

[0178] Please refer to Figure 10, which is a schematic diagram of the structure of a communication device 1000 provided in an embodiment of the present disclosure. The communication device 1000 shown in Figure 10 may include a transceiver module 1001 and a processing module 1002. The transceiver module 1001 may include a sending module and / or a receiving module, the sending module is used to implement a sending function, and the receiving module is used to implement a receiving function. The transceiver module 1001 can implement a sending function and / or a receiving function.

[0179] It can be understood that the communication device 1000 can be a terminal device, or a device that can be used in conjunction with a terminal device.

[0180] The communication device 1000 is at the terminal device side, wherein:

[0181] The processing module 1002 is used to determine the state of the sidelink SL carrier according to the measurement result of the first parameter associated with the SL carrier, wherein the state of the SL carrier includes an activation state or a deactivation state, and the terminal device performs sidelink communication through multiple SL carriers.

[0182] Optionally, the processing module 1002 is used to:

[0183] When the measurement result of the first parameter is greater than or equal to the threshold value, determining that the state of the SL carrier is a deactivated state; or,

[0184] When the measurement result of the first parameter is less than the threshold value, it is determined that the state of the SL carrier is an activated state.

[0185] Optionally, the transceiver module 1001 is used to:

[0186] receiving measurement configuration information of a first parameter sent by a network device; or,

[0187] The processing module 1002 is configured to obtain measurement configuration information of the first parameter from a system information block SIB; or,

[0188] The processing module 1002 is configured to obtain measurement configuration information of the first parameter from pre-configuration information.

[0189] Optionally, the transceiver module 1001 is used to:

[0190] receiving a threshold value sent by a network device; or,

[0191] The processing module 1002 is configured to obtain a threshold value from a system information block SIB; or,

[0192] The processing module 1002 is configured to obtain a threshold value from pre-configured information.

[0193] Optionally, the processing module 1002 is used to:

[0194] Determine the CBR of the SL carrier according to the CBR of any resource pool on the SL carrier; or,

[0195] Determine the CBR of the SL carrier according to the CBR of the first resource pool selected by the terminal device on the SL carrier; or,

[0196] The CBR of the SL carrier is determined according to any one of the maximum value, the minimum value or the average value of the CBRs of all resource pools on the SL carrier.

[0197] Optionally, the transceiver module 1001 is further used for:

[0198] In response to the terminal device being in the first mode or in the second mode of the radio resource control RRC connection state, first indication information is sent to the network device, and the first indication information is used to indicate the state of the SL carrier; the first mode is that the network device schedules sidelink transmission resources for the terminal device, and the second mode is that the terminal device autonomously selects sidelink transmission resources.

[0199] Optionally, the transceiver module 1001 is used to:

[0200] The first indication information is sent to the network device through the media access control layer control unit MAC CE.

[0201] Optionally, the above-mentioned MAC CE includes a first bitmap Bitmap, the first Bitmap includes at least one bit, the at least one bit corresponds one-to-one with the index identifier corresponding to the SL carrier, and the bit is used to indicate the state of the SL carrier corresponding to the index identifier.

[0202] Optionally, the above bit position is a first value, used to indicate that the state of the SL carrier corresponding to the bit position is an activated state; the above bit position is a second value, used to indicate that the state of the SL carrier corresponding to the bit position is a deactivated state.

[0203] Optionally, the transceiver module 1001 is used to:

[0204] The first indication information is sent to the network device through the side link terminal device information SUI and / or the terminal device auxiliary information UAI.

[0205] Optionally, the SU and / or UAI includes an index identifier corresponding to a SL carrier in a deactivated state.

[0206] Optionally, the transceiver module 1001 is further used for:

[0207] Send second indication information to the opposite terminal device, where the second indication information is used to indicate the status of the SL carrier.

[0208] In the present disclosure, when a terminal device performs sidelink communication through multiple SL carriers, the state of the SL carrier can be determined to be an activated state or a deactivated state according to the measurement result of the first parameter associated with the sidelink SL carrier, thereby improving the accuracy of the determined SL carrier state.

[0209] It should be noted that the above device embodiment is obtained based on the method embodiment. For specific descriptions, please refer to the method embodiment part, which will not be repeated here.

[0210] It can be understood that the communication device 1000 can be a terminal device, or a device that can be used in conjunction with a terminal device.

[0211] The communication device 1000 is at the terminal device side, wherein:

[0212] The transceiver module 1001 is used to obtain third indication information;

[0213] The processing module 1002 is used to determine the state of the sidelink SL carrier according to the third indication information associated with the SL carrier, wherein the state of the SL carrier includes an activation state or a deactivation state, and the terminal device performs sidelink communication through multiple SL carriers.

[0214] Optionally, the third indication information is: SL carrier configuration information, or media access control control unit MAC CE.

[0215] Optionally, the third indication information is MAC CE, MAC CE includes a second bitmap Bitmap, the second Bitmap includes at least one bit, at least one bit corresponds one-to-one to the index identifier corresponding to the SL carrier, and the bit is used to indicate the terminal to activate or deactivate the SL carrier corresponding to the index identifier.

[0216] Optionally, the bit position is a first value, used to indicate that the terminal activates the SL carrier corresponding to the bit position; the bit position is a second value, used to indicate that the terminal deactivates the SL carrier corresponding to the bit position.

[0217] Optionally, the third indication information is SL carrier configuration information, and the processing module 1002 is used to:

[0218] When the SL carrier configuration information is configured as a third value, determining that the SL carrier is in an activated state; or,

[0219] When the SL carrier configuration information is configured as the fourth value, it is determined that the SL carrier is in a deactivated state.

[0220] Optionally, the transceiver module 1001 is further used for:

[0221] receiving third indication information sent by the network device; or,

[0222] The processing module 1002 is configured to obtain the third indication information from the system information block SIB; or,

[0223] The processing module 1002 is configured to obtain third indication information from pre-configuration information.

[0224] According to the third indication information associated with the sidelink SL carrier, the state of the SL carrier is determined, wherein the state of the SL carrier includes an activation state or a deactivation state, and the terminal device performs sidelink communication through multiple SL carriers.

[0225] In the present disclosure, when a terminal device performs sidelink communication through multiple SL carriers, after obtaining the third indication information, the terminal device can obtain the third indication information associated with the SL carrier, wherein the third indication information is used to indicate the activation and / or deactivation status of the SL carrier of the terminal device, and the terminal device determines the status of the SL carrier according to the third indication information. Thereby, the accuracy of the determined SL carrier status is improved.

[0226] It should be noted that the above device embodiment is obtained based on the method embodiment. For specific descriptions, please refer to the method embodiment part, which will not be repeated here.

[0227] It can be understood that the communication device 1000 can be a terminal device, or a device that can be used in conjunction with a terminal device.

[0228] The communication device 1000 is at the terminal device side, wherein:

[0229] The processing module 1002 is used to determine the state of the sidelink SL carrier according to the first timer associated with the SL carrier, wherein the state of the SL carrier includes an activation state or a deactivation state, and the terminal device performs sidelink communication through multiple SL carriers.

[0230] Optionally, the processing module 1002 is used to:

[0231] When the first timer times out or stops, determining that the state of the SL carrier is a deactivated state; or,

[0232] When the first timer is running, it is determined that the state of the SL carrier is an activated state.

[0233] Optionally, the transceiver module 1001 is further used for:

[0234] receiving a first timer configuration sent by a network device; or,

[0235] Obtaining a first timer configuration from a system information block SIB; or,

[0236] A first timer configuration is obtained from the pre-configuration information.

[0237] Optionally, the processing module 1002 is further used to:

[0238] When it is determined that the SL carrier is in an activated state according to the third indication information associated with the sidelink SL carrier, starting a first timer associated with the SL carrier;

[0239] In case that the received downlink control information DCI schedules SL transmission on the SL carrier, starting or restarting a first timer associated with the SL carrier; or,

[0240] The sending terminal device starts or restarts the first timer associated with the SL carrier after sending the sidelink control information SCI on the SL carrier; or,

[0241] The transmitting terminal device starts or restarts the first timer associated with the SL carrier after sending the physical sidelink shared channel PSSCH transmission on the SL carrier; or,

[0242] The sending terminal device starts or restarts the first timer associated with the SL carrier when receiving the hybrid automatic repeat request HARQ feedback on the SL carrier; or,

[0243] The receiving terminal device starts or restarts the first timer associated with the SL carrier when receiving the SCI on the SL carrier; or,

[0244] The receiving terminal device starts or restarts the first timer associated with the SL carrier when receiving the PSSCH transmission on the SL carrier; or,

[0245] After sending the HARQ feedback on the SL carrier, the receiving terminal device starts or restarts the first timer associated with the SL carrier.

[0246] According to a first timer associated with a sidelink SL carrier, a state of the SL carrier is determined, wherein the state of the SL carrier includes an activation state or a deactivation state, and the terminal device performs sidelink communication through multiple SL carriers.

[0247] In the present disclosure, when a terminal device performs sidelink communication via multiple SL carriers, the state of the SL carrier is determined according to a first timer associated with the sidelink SL carrier, thereby improving the accuracy of the determined SL carrier state.

[0248] It should be noted that the above device embodiment is obtained based on the method embodiment. For specific descriptions, please refer to the method embodiment part, which will not be repeated here.

[0249] Please refer to Figure 11, which is a schematic diagram of the structure of another communication device 1100 provided in an embodiment of the present disclosure. The communication device 1100 can be a network device, or a terminal device, or a chip, a chip system, or a processor that supports the network device to implement the above method, or a chip, a chip system, or a processor that supports the terminal device to implement the above method. The device can be used to implement the method described in the above method embodiment, and the details can be referred to the description in the above method embodiment.

[0250] The communication device 1100 may include one or more processors 1101. The processor 1101 may be a general-purpose processor or a dedicated processor, etc. For example, it may be a baseband processor or a central processing unit. The baseband processor may be used to process the communication protocol and communication data, and the central processing unit may be used to control the communication device (such as a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute a computer program, and process the data of the computer program.

[0251] Optionally, the communication device 1100 may further include one or more memories 1102, on which a computer program 1104 may be stored, and the processor 1101 executes the computer program 1104 so that the communication device 1100 performs the method described in the above method embodiment. Optionally, data may also be stored in the memory 1102. The communication device 1100 and the memory 1102 may be provided separately or integrated together.

[0252] Optionally, the communication device 1100 may further include a transceiver 1105 and an antenna 1106. The transceiver 1105 may be referred to as a transceiver unit, a transceiver, or a transceiver circuit, etc., and is used to implement a transceiver function. The transceiver 1105 may include a receiver and a transmitter, the receiver may be referred to as a receiver or a receiving circuit, etc., and is used to implement a receiving function; the transmitter may be referred to as a transmitter or a transmitting circuit, etc., and is used to implement a transmitting function.

[0253] Optionally, the communication device 1100 may further include one or more interface circuits 1107. The interface circuit 1107 is used to receive code instructions and transmit them to the processor 1101. The processor 1101 executes the code instructions to enable the communication device 1100 to execute the method described in the above method embodiment.

[0254] The communication device 1100 is a terminal device: the transceiver 1105 is used to execute step 301 and step 303 in FIG. 3 ; step 402 in FIG. 4 ; step 502 in FIG. 5 , etc.

[0255] The communication apparatus 1100 is a terminal device: the processor 1101 is used to execute step 602 in FIG. 6 and the like.

[0256] The communication apparatus 1100 is a terminal device: the processor 1101 is used to execute step 701 in FIG. 7 ; step 802 in FIG. 8 ; step 901 , step 902 in FIG. 9 , etc.

[0257] In one implementation, the processor 1101 may include a transceiver for implementing receiving and sending functions. For example, the transceiver may be a transceiver circuit, an interface, or an interface circuit. The transceiver circuit, interface, or interface circuit for implementing the receiving and sending functions may be separate or integrated. The above-mentioned transceiver circuit, interface, or interface circuit may be used for reading and writing code / data, or the above-mentioned transceiver circuit, interface, or interface circuit may be used for transmitting or delivering signals.

[0258] In one implementation, the processor 1101 may store a computer program 1103, which runs on the processor 1101 and enables the communication device 1100 to perform the method described in the above method embodiment. The computer program 1103 may be fixed in the processor 1101, in which case the processor 1101 may be implemented by hardware.

[0259] In one implementation, the communication device 1100 may include a circuit that can implement the functions of sending, receiving, or communicating in the aforementioned method embodiments. The processor and transceiver described in the present disclosure may be implemented in an integrated circuit (IC), an analog IC, a radio frequency integrated circuit RFIC, a mixed signal IC, an application specific integrated circuit (ASIC), a printed circuit board (PCB), an electronic device, and the like. The processor and transceiver may also be manufactured using various IC process technologies, such as complementary metal oxide semiconductor (CMOS), N-type metal oxide semiconductor (nMetal-oxide-semiconductor, NMOS), P-type metal oxide semiconductor (positive channel metal oxide semiconductor, PMOS), bipolar junction transistor (bipolar junction transistor, BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), and the like.

[0260] The communication device described in the above embodiments may be a network device or an access network device (such as the terminal device in the aforementioned method embodiment), but the scope of the communication device described in the present disclosure is not limited thereto, and the structure of the communication device may not be limited by FIG. 11. The communication device may be an independent device or may be part of a larger device. For example, the communication device may be:

[0261] (1) Independent integrated circuit IC, or chip, or chip system or subsystem;

[0262] (2) having a set of one or more ICs, and optionally, the IC set may also include a storage component for storing data and computer programs;

[0263] (3) ASIC, such as modem;

[0264] (4) Modules that can be embedded in other devices;

[0265] (5) Receivers, terminal devices, intelligent terminal devices, cellular phones, wireless devices, handheld devices, mobile units, vehicle-mounted devices, network devices, cloud devices, artificial intelligence devices, etc.;

[0266] (6)Others

[0267] For the case where the communication device can be a chip or a chip system, please refer to the schematic diagram of the chip structure shown in Figure 12. The chip shown in Figure 12 includes a processor 1201 and an interface 1203. The number of processors 1201 can be one or more, and the number of interfaces 1203 can be multiple.

[0268] For the case where the chip is used to implement the functions of the terminal device in the embodiment of the present disclosure:

[0269] Interface 1203 is used to execute step 301 and step 303 in FIG. 3 ; step 402 in FIG. 4 ; step 502 in FIG. 5 , etc.

[0270] For the case where the chip is used to implement the functions of the terminal device in the embodiment of the present disclosure:

[0271] Interface 1203 is used to execute step 601 in FIG. 6 .

[0272] For the case where the chip is used to implement the functions of the terminal device in the embodiment of the present disclosure:

[0273] Interface 1203 is used to execute step 801 in FIG. 8 , etc.

[0274] Optionally, the chip further includes a memory 1203, and the memory 1203 is used to store necessary computer programs and data.

[0275] Those skilled in the art may also understand that the various illustrative logical blocks and steps listed in the embodiments of the present disclosure may be implemented by electronic hardware, computer software, or a combination of the two. Whether such functions are implemented by hardware or software depends on the specific application and the design requirements of the entire system. Those skilled in the art may use various methods to implement the functions for each specific application, but such implementation should not be understood as exceeding the scope of protection of the embodiments of the present disclosure.

[0276] The present disclosure also provides a readable storage medium having instructions stored thereon, which implement the functions of any of the above method embodiments when executed by a computer.

[0277] The present disclosure also provides a computer program product, which implements the functions of any of the above method embodiments when executed by a computer.

[0278] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer programs. When the computer program is loaded and executed on a computer, the process or function according to the embodiment of the present disclosure is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer program can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer program can be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that contains one or more available media integrated. Available media may be magnetic media (eg, floppy disks, hard disks, tapes), optical media (eg, high-density digital video discs (DVD)), or semiconductor media (eg, solid state disks (SSD)).

[0279] It is to be understood that in the present disclosure, "plurality" refers to two or more than two, and other quantifiers are similar thereto. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. The singular forms "a", "" and "the" are also intended to include plural forms, unless the context clearly indicates other meanings.

[0280] It is further understood that, although the operations are described in a specific order in the drawings in the embodiments of the present disclosure, it should not be understood as requiring the operations to be performed in the specific order shown or in a serial order, or requiring the execution of all the operations shown to obtain the desired results. In certain environments, multitasking and parallel processing may be advantageous.

[0281] Those skilled in the art can understand that the various numerical numbers such as first and second involved in the present disclosure are only used for distinction for convenience of description and are not used to limit the scope of the embodiments of the present disclosure, and also indicate the order of precedence.

[0282] At least one in the present disclosure may also be described as one or more, and a plurality may be two, three, four or more, which is not limited in the present disclosure. In the embodiments of the present disclosure, for a technical feature, the technical features in the technical feature are distinguished by "first", "second", "third", "A", "B", "C" and "D", etc., and there is no order of precedence or size between the technical features described by the "first", "second", "third", "A", "B", "C" and "D".

[0283] The corresponding relationships shown in the tables in the present disclosure can be configured or predefined. The values ​​of the information in each table are only examples and can be configured as other values, which are not limited by the present disclosure. When configuring the corresponding relationship between the information and each parameter, it is not necessarily required to configure all the corresponding relationships illustrated in each table. For example, in the table in the present disclosure, the corresponding relationships shown in some rows may not be configured. For another example, appropriate deformation adjustments can be made based on the above table, such as splitting, merging, etc. The names of the parameters shown in the titles of the above tables can also use other names that can be understood by the communication device, and the values ​​or representations of the parameters can also be other values ​​or representations that can be understood by the communication device. When implementing the above tables, other data structures can also be used, such as arrays, queues, containers, stacks, linear lists, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables or hash tables.

[0284] The predefined in the present disclosure may be understood as defined, predefined, stored, pre-stored, pre-negotiated, pre-configured, solidified, or pre-burned.

[0285] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this disclosure.

[0286] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0287] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the following claims.

[0288] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

A method for determining a sidelink carrier state, characterized in that: Executed by a terminal device, the method comprises: determining a state of a sidelink SL carrier based on a measurement result of a first parameter associated with the SL carrier, wherein the state of the SL carrier comprises an activation state or a deactivation state, and the terminal device performs sidelink communication via a plurality of the SL carriers. The method according to claim 1, characterized in that The state of the sidelink SL carrier is determined based on the measurement result of the first parameter associated with the SL carrier, including: when the measurement result of the first parameter is greater than or equal to a threshold value, determining that the state of the SL carrier is a deactivated state; or when the measurement result of the first parameter is less than the threshold value, determining that the state of the SL carrier is an activated state. The method according to claim 2, characterized in that Also includes: Receiving measurement configuration information of the first parameter sent by a network device; or obtaining the measurement configuration information of the first parameter from a system information block SIB; Alternatively, the measurement configuration information of the first parameter is obtained from pre-configuration information. The method according to claim 2, characterized in that Also includes: Receive the threshold value sent by a network device; or obtain the threshold value from a system information block SIB; or obtain the threshold value from pre-configuration information. The method according to any one of claims 1 to 4, characterized in that: The first parameter is the channel occupancy rate CBR, and the method also includes: determining the CBR of the SL carrier according to the CBR of any resource pool on the SL carrier; or, determining the CBR of the SL carrier according to the CBR of the first resource pool selected by the terminal device on the SL carrier; or, determining the CBR of the SL carrier according to any one of the maximum value, minimum value or average value of the CBRs of all resource pools on the SL carrier. The method according to any one of claims 1 to 5, characterized in that: Also includes: In response to the terminal device being in the first mode or in the second mode of the radio resource control RRC connection state, first indication information is sent to the network device, and the first indication information is used to indicate the state of the SL carrier; the first mode is that the network device schedules sidelink transmission resources for the terminal device, and the second mode is that the terminal device autonomously selects sidelink transmission resources. The method according to claim 6, characterized in that The sending the first indication information to the network device includes: sending the first indication information to the network device through a media access control layer control element MAC CE. The method according to claim 7, characterized in that The MAC CE includes a first bitmap, the first Bitmap includes at least one bit, the at least one bit corresponds one-to-one to the index identifier corresponding to the SL carrier, and the bit is used to indicate the state of the SL carrier corresponding to the index identifier. The method according to claim 8, characterized in that The bit position is a first value, used to indicate that the state of the SL carrier corresponding to the bit position is an activated state; the bit position is a second value, used to indicate that the state of the SL carrier corresponding to the bit position is a deactivated state. The method according to claim 6, characterized in that The sending of the first indication information to the network device includes: sending the first indication information to the network device via side link terminal device information SUI and / or terminal device auxiliary information UAI. The method according to claim 10, characterized in that The SU and / or the UAI include an index identifier corresponding to a SL carrier in a deactivated state. The method according to any one of claims 1 to 5, characterized in that: Also includes: Send second indication information to the opposite terminal device, where the second indication information is used to indicate the status of the SL carrier. A method for determining a sidelink carrier state, characterized in that: Executed by a terminal device, the method includes: obtaining third indication information; determining a state of a sidelink SL carrier according to the third indication information associated with the SL carrier, wherein the state of the SL carrier includes an activation state or a deactivation state, and the terminal device performs sidelink communication through a plurality of the SL carriers. The method according to claim 13, characterized in that The third indication information is: SL carrier configuration information, or medium access control control element MAC CE. The method according to claim 14, characterized in that The third indication information is MAC CE, the MAC CE includes a second bitmap Bitmap, the second Bitmap includes at least one bit, the at least one bit corresponds one-to-one to the index identifier corresponding to the SL carrier, and the bit is used to instruct the terminal to activate or deactivate the SL carrier corresponding to the index identifier. The method according to claim 15, characterized in that The bit position is a first value, used to instruct the terminal to activate the SL carrier corresponding to the bit position; the bit position is a second value, used to instruct the terminal to deactivate the SL carrier corresponding to the bit position. The method according to claim 14, characterized in that The third indication information is SL carrier configuration information. According to the third indication information associated with the sidelink SL carrier, the state of the SL carrier is determined, including: when the SL carrier configuration information is configured to a third value, determining that the SL carrier is in an activated state; or, when the SL carrier configuration information is configured to a fourth value, determining that the SL carrier is in a deactivated state. The method according to any one of claims 1 to 13, characterized in that: The acquiring the third indication information includes: receiving the third indication information sent by a network device; or acquiring the third indication information from a system information block SIB; or acquiring the third indication information from pre-configuration information. A method for determining a sidelink carrier state, characterized in that: Executed by a terminal device, the method includes: determining a state of a sidelink SL carrier based on a first timer associated with the SL carrier, wherein the state of the SL carrier includes an activation state or a deactivation state, and the terminal device performs sidelink communication through multiple SL carriers. The method according to claim 19, characterized in that The determining of the state of the sidelink SL carrier based on the first timer associated with the SL carrier includes: when the first timer times out or stops, determining that the state of the SL carrier is a deactivated state; or when the first timer is running, determining that the state of the SL carrier is an activated state. The method according to claim 19, characterized in that Also includes: Receive the first timer configuration sent by a network device; or, obtain the first timer configuration from a system information block SIB; or, obtain the first timer configuration from pre-configuration information. The method according to any one of claims 19 to 21, characterized in that: Also includes: In the case where it is determined that the SL carrier is in an activated state according to the third indication information associated with the sidelink SL carrier, the first timer associated with the SL carrier is started; in the case where the received downlink control information DCI schedules the SL transmission on the SL carrier, the first timer associated with the SL carrier is started or restarted; or, the sending terminal device starts or restarts the first timer associated with the SL carrier after sending the sidelink control information SCI on the SL carrier; or, the sending terminal device starts or restarts the first timer associated with the SL carrier after sending the physical sidelink shared channel PSSCH transmission on the SL carrier; or, the sending terminal device starts or restarts the first timer associated with the SL carrier after receiving the hybrid automatic repeat request HARQ feedback on the SL carrier; or, the receiving terminal device starts or restarts the first timer associated with the SL carrier after receiving the SCI on the SL carrier; or, the receiving terminal device starts or restarts the first timer associated with the SL carrier after receiving the PSSCH transmission on the SL carrier; or, the receiving terminal device starts or restarts the first timer associated with the SL carrier after sending the HARQ feedback on the SL carrier. A communication device, characterized in that: include: A processing module is used to determine the state of the sidelink SL carrier based on the measurement result of the first parameter associated with the SL carrier, wherein the state of the SL carrier includes an activation state or a deactivation state, and the terminal device performs sidelink communication through multiple SL carriers. A communication device, characterized in that: include: The transceiver module is used to obtain third indication information; the processing module is used to determine the state of the side link SL carrier according to the third indication information associated with the SL carrier, wherein the state of the SL carrier includes an activation state or a deactivation state, and the terminal device performs side link communication through multiple SL carriers. A communication device, characterized in that: include: A processing module is used to determine the state of the sidelink SL carrier based on a first timer associated with the SL carrier, wherein the state of the SL carrier includes an activation state or a deactivation state, and the terminal device performs sidelink communication through multiple SL carriers. A communication device, characterized in that: The device comprises a processor and a memory, wherein a computer program is stored in the memory, and the processor executes the computer program stored in the memory so that the device performs the method according to any one of claims 1 to 22. A computer-readable storage medium is used to store instructions, and when the instructions are executed, the method according to any one of claims 1 to 22 is implemented.

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