Communication methods, terminals and communication system

Abstract

The present disclosure relates to communication methods, terminals and a communication system. A communication method comprises: a first terminal sending first information to a second terminal, the first information being used for scheduling M physical sidelink shared channels (PSSCHs), wherein M is an integer greater than or equal to 1, and the first information comprises first-stage sidelink control information (SCI) and second-stage SCI. The solution provided in the embodiments of the present disclosure can allow a plurality of PSSCHs to be scheduled for communication by means of one piece of SCI.

Description

Communication method, terminal and communication system Technical Field

[0001] The present disclosure relates to the field of communication technologies, and in particular to a communication method, a terminal, and a communication system. Background Art

[0002] Sidelink Control Information (SCI) is used to send control information on the Physical Sidelink Control Channel (PSCCH) to schedule the Physical Sidelink Shared Channel (PSSCH).

[0003] Summary of the Invention

[0004] The sidelink control information is used to schedule the physical sidelink shared channel PSSCH. The related art does not propose a communication method for scheduling multiple PSSCHs.

[0005] The embodiments of the present disclosure provide a communication method, a terminal, and a communication system.

[0006] According to a first aspect of an embodiment of the present disclosure, a communication method is proposed, the method comprising: a first terminal sends first information to a second terminal, the first information being used to schedule M physical sidelink shared channels PSSCH; wherein M is an integer greater than or equal to 1, and the first information comprises first-stage sidelink control information SCI and second-stage SCI.

[0007] According to the second aspect of an embodiment of the present disclosure, a communication method is proposed, which includes: a second terminal obtains first information sent by a first terminal; scheduling M physical side link shared channels PSSCH based on the first information; wherein, M is an integer greater than or equal to 1, and the first information includes first-stage side link control information SCI and second-stage SCI.

[0008] According to a third aspect of an embodiment of the present disclosure, a communication method is proposed, comprising: a first device sends first information to a second device, wherein the first information is used to schedule M physical side link shared channels PSSCH; the second device obtains the first information and schedules M PSSCHs based on the first information; wherein M is an integer greater than or equal to 1, and the first information includes first-stage side link control information SCI and second-stage SCI.

[0009] According to a fourth aspect of an embodiment of the present disclosure, a first terminal is proposed, including: a transceiver module, configured to send first information to a second terminal, where the first information is used to schedule M physical sidelink shared channels (PSSCHs);

[0010] Here, M is an integer greater than or equal to 1, and the first information includes first-stage side link control information SCI and second-stage SCI.

[0011] According to the fifth aspect of an embodiment of the present disclosure, a second terminal is proposed, including: a transceiver module for obtaining first information sent by a first terminal; a processing module for scheduling M physical side link shared channels PSSCH based on the first information; wherein, M is an integer greater than or equal to 1, and the first information includes first-stage side link control information SCI and second-stage SCI.

[0012] According to a sixth aspect of an embodiment of the present disclosure, a first terminal is proposed, comprising: one or more processors; wherein the processor is used to execute the communication method described in the first aspect.

[0013] According to a seventh aspect of an embodiment of the present disclosure, a second terminal is proposed, comprising: one or more processors; wherein the processor is used to execute the communication method described in the second aspect.

[0014] According to an eighth aspect of an embodiment of the present disclosure, a communication system is proposed, including: a first terminal and a second terminal, wherein the first terminal is configured to implement the communication method described in the first aspect, and the second terminal is configured to implement the communication method described in the second aspect.

[0015] According to a ninth aspect of an embodiment of the present disclosure, a storage medium is proposed, which stores instructions. When the instructions are executed on a communication device, the communication device executes the communication method as described in any one of the first aspect or the second aspect.

[0016] Through the solution provided by the embodiments of the present disclosure, it is possible to schedule multiple PSSCHs for communication through one SCI. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following drawings required for describing the embodiments are introduced. The following drawings are merely some embodiments of the present disclosure and do not impose specific limitations on the protection scope of the present disclosure.

[0018] FIG1 is an exemplary schematic diagram of the architecture of a communication system provided according to an embodiment of the present disclosure.

[0019] FIG2A is a schematic diagram of an exemplary interaction of a communication method provided according to an embodiment of the present disclosure.

[0020] FIG2B is a schematic diagram of a scenario in which one SIC schedules multiple PSSCHs according to an embodiment of the present disclosure.

[0021] FIG2C is a schematic diagram of a scenario in which one SIC schedules multiple PSSCHs according to an embodiment of the present disclosure.

[0022] FIG3 is a flow chart of a communication method according to an embodiment of the present disclosure.

[0023] FIG4 is a flow chart showing a communication method according to an embodiment of the present disclosure.

[0024] FIG5A is a schematic structural diagram of a first terminal proposed in an embodiment of the present disclosure.

[0025] FIG5B is a schematic structural diagram of a second terminal proposed in an embodiment of the present disclosure.

[0026] FIG6A is a schematic structural diagram of a communication device proposed in an embodiment of the present disclosure.

[0027] FIG6B is a schematic diagram of the structure of a chip proposed in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0028] The embodiments of the present disclosure provide a communication method, a terminal, and a communication system.

[0029] In a first aspect, an embodiment of the present disclosure proposes a communication method, comprising: a first terminal sends first information to a second terminal, the first information being used to schedule M physical sidelink shared channels PSSCH; wherein, M is an integer greater than or equal to 1, and the first information includes first-stage sidelink control information SCI and second-stage SCI.

[0030] In the above embodiment, by sending the first information and defining the content contained in the first information, the terminal can schedule multiple PSSCHs for communication through the first information.

[0031] In combination with some embodiments of the first aspect, in some embodiments, the first-stage SCI and the second-stage SCI are carried in the first time slot, and the first time slot is the time slot where the first PSSCH among the M PSSCHs is located; the first information includes the first-stage SCI corresponding to the M PSSCHs and the second-stage SCI corresponding to the M PSSCHs, wherein the number of the first-stage SCIs is 1 and the number of the second-stage SCIs is 1.

[0032] In the above embodiment, by clarifying the time slot position and number information carried by one of the first-stage SCI and the second-stage SCI, the first terminal can schedule multiple PSSCHs for communication through the first information.

[0033] In combination with some embodiments of the first aspect, in some embodiments, the first-stage SCI is carried in the first time slot, and the second-stage SCI is carried in the time slots where M PSSCHs are located, respectively. The first time slot is the time slot where the first PSSCH among the M PSSCHs is located, wherein the number of first-stage SCIs is 1, and the number of second-stage SCIs is M.

[0034] In the above embodiment, by clarifying the time slot position and number information carried by one of the first-stage SCI and the second-stage SCI, the terminal can schedule multiple PSSCHs for communication through the first information.

[0035] In combination with some embodiments of the first aspect, in some embodiments, the first information is sent based on the first resource, wherein the first resource appears based on a first period, and the first period is based on one or more of the following configurations, including: a resource pool, a partial bandwidth BWP, or a carrier.

[0036] In combination with some embodiments of the first aspect, in some embodiments, the information field in the second stage SCI includes one or more of the following: a first hybrid automatic repeat request process identifier HARQ process ID, the information field length of the first HARQ process ID is 5 bits, and the first HARQ process ID indicates the HARQ process number of the first PSSCH in the M PSSCHs scheduled by the first information; a first redundancy version Rv, the information field length of the first redundancy version is M bits, and each bit value indicates the redundant version value of 1 PSSCH in the M PSSCHs scheduled by the first information, and M is an integer greater than 1; a first new data indication NDI, the information field length of the first new data indication is M bits, and each bit value indicates the new data indication of 1 PSSCH in the M PSSCHs scheduled by the first information; a first destination identifier Destination ID, the information field of the first destination identifier indicates M destination identifiers, and the information field length of the first destination identifier is Q bits, wherein the value of Q is 16 times M, and each 16-bit bit value indicates the destination terminal of one PSSCH among the M PSSCHs scheduled by the first information; whether the first HARQ feedback is enabled or disabled, the information field length of the first HARQ feedback is M bits, and each bit value indicates the state of enabling or disabling the HARQ feedback of one PSSCH among the M PSSCHs scheduled by the first information; service type, the information field length of the service type is 2 bits; channel state information CSI request, the information field length of the CSI request is 1 bit; first source identifier, the information field length of the first source identifier is 8 bits; area identifier, the information field length of the area identifier is 12 bits; communication distance requirement, the information field length of the communication distance requirement is 4 bits.

[0037] In the above embodiment, by clarifying the information fields in the second-stage SCI and the length and function of each information field, the first information can schedule multiple PSSCHs, thereby enabling the terminal to schedule multiple PSSCHs for communication through the first information.

[0038] In combination with some embodiments of the first aspect, in some embodiments, the information field in the second stage SCI includes one or more of the following: a second new data indication, the information field length of the second new data indication is 1 bit; a second redundant version, the information field length of the second redundant version is 2 bits; a second HARQ process identifier, the information field length of the second HARQ process identifier is 4 bits; a second destination identifier, the information field length of the second destination identifier is 16 bits; enabling or disabling of the second HARQ feedback, the corresponding information field length of enabling or disabling the second HARQ feedback is 1 bit; a service type, the information field length of the service type is 2 bits; a channel state information CSI request, the information field length of the CSI request is 1 bit; an area identifier, the information field length of the area identifier is 12 bits; a second source identifier, the information field length of the second source identifier is 8 bits; a communication distance requirement, the information field length of the communication distance requirement is 4 bits.

[0039] In the above embodiment, by clarifying the information fields in the second-stage SCI and the length and function of each information field, the first information can schedule multiple PSSCHs, thereby enabling the terminal to schedule multiple PSSCHs for communication through the first information.

[0040] In combination with some embodiments of the first aspect, in some embodiments, the information field in the first-stage SCI includes one or more of the following: priority value, the information field length of the priority value is 3 times M bits, and each 3-bit bit value indicates the priority value of 1 PSSCH among the M PSSCHs scheduled by the first information; modulation and coding MCS scheme, the information field length of the MCS scheme is 5 bits; resource reservation period, the information field length of the reserved resource period is O bits, where O is the logarithm of P with base 2, and P is the number of resource periods; demodulation reference signal DMRS structure; the format of the second-stage SCI, the information field length of the format of the second-stage SCI is 2 bits; the first offset indication value; the number of DMRS ports; the overhead of the physical side chain feedback channel; the first time domain resources; the first frequency domain resources and the number M of PSSCHs scheduled by the first information.

[0041] In the above embodiment, by clarifying the information fields in the first-stage SCI and the length and function of each information field, the first information can schedule multiple PSSCHs, thereby enabling the terminal to schedule multiple PSSCHs for communication through the first information.

[0042] In combination with some embodiments of the first aspect, in some embodiments, the first time domain resource is used to indicate at least one of the following: time domain resources of M consecutive PSSCHs; N reserved time domain resources corresponding to M PSSCH time domain resources, where N is an integer.

[0043] In the above embodiment, the specific content indicated by the first time domain resource is clarified, so that the first information can clearly schedule the time domain resources used in the process of scheduling multiple PSSCHs, thereby enabling the terminal to schedule multiple PSSCHs for communication through the first information.

[0044] In combination with some embodiments of the first aspect, in some embodiments, the first time domain resource carried by the SCI in the first phase is indicated by way of a time domain resource indication TRIV.

[0045] In combination with some embodiments of the first aspect, in some embodiments, TRIV is used to indicate a first time domain position; the first time domain position is the time domain position of the first PSSCH in the M PSSCHs reserved each time in the N reserved time domain resources.

[0046] In the above embodiment, the specific content indicated by the first time domain resource is clarified, so that the first information can clearly schedule the time domain resources used in the process of scheduling multiple PSSCHs, thereby enabling the terminal to schedule multiple PSSCHs for communication through the first information.

[0047] In combination with some embodiments of the first aspect, in some embodiments, the time domain position of the first PSSCH among the M consecutive PSSCHs scheduled this time is the second time domain position, and the second time domain position is obtained based on blind detection; the first time domain position is obtained based on the second time domain position and the offset, and the offset is the offset between the second time domain position and the first time domain position.

[0048] In combination with some embodiments of the first aspect, in some embodiments, the first frequency domain resource is used to indicate at least one of the following: the frequency domain resources of the M PSSCHs scheduled this time, the frequency domain starting positions of the M PSSCH frequency domain resources are the same, and they have the same number of frequency domain resources; the N reserved frequency domain resources corresponding to the M PSSCH frequency domain resources, where N is an integer, and the frequency domain starting positions of the M PSSCH frequency domain resources in each reserved frequency domain resource in the N reserved frequency domain resources are different, and they have the same number of frequency domain resources.

[0049] In the above embodiment, the specific content indicated by the first frequency domain resource is clarified, so that the first information can clearly schedule the frequency domain resources used in the process of scheduling multiple PSSCHs, thereby enabling the terminal to schedule multiple PSSCHs for communication through the first information.

[0050] In combination with some embodiments of the first aspect, in some embodiments, the first frequency domain resource in the first stage SCI is indicated by means of a frequency domain resource FRIV.

[0051] In the above embodiment, the specific content indicated by the first frequency domain resource is clarified, so that the first information can clearly schedule the frequency domain resources used in the process of scheduling multiple PSSCHs, thereby enabling the terminal to schedule multiple PSSCHs for communication through the first information.

[0052] In combination with some embodiments of the first aspect, in some embodiments, FRIV is used to indicate at least one of the following: the number of frequency domain resources, and the starting position of the first frequency domain; wherein the starting position of the first frequency domain is the frequency domain position of the first PSSCH in the M PSSCHs reserved each time in the N reserved frequency domain resources.

[0053] In the above embodiment, the specific content indicated by the first frequency domain resource is clarified, so that the first information can clearly schedule the frequency domain resources used in the process of scheduling multiple PSSCHs, thereby enabling the terminal to schedule multiple PSSCHs for communication through the first information.

[0054] In combination with some embodiments of the first aspect, in some embodiments, the frequency domain position of the first PSSCH among the M consecutive PSSCHs scheduled this time is the second frequency domain position, and the second frequency domain position is obtained based on blind detection; the first frequency domain position is obtained based on the second time domain position and the offset, and the offset is the offset between the first frequency domain position and the second frequency domain position.

[0055] In the second aspect, an embodiment of the present disclosure proposes a communication method, which includes: a second terminal obtains first information sent by a first terminal; scheduling M physical side link shared channels PSSCH based on the first information; wherein, M is an integer greater than or equal to 1, and the first information includes first-stage side link control information SCI and second-stage SCI.

[0056] In combination with some embodiments of the second aspect, in some embodiments, the first-stage SCI and the second-stage SCI are carried in the first time slot, and the first time slot is the time slot where the first PSSCH among the M PSSCHs is located; the first information includes the first-stage SCI corresponding to the M PSSCHs and the second-stage SCI corresponding to the M PSSCHs, wherein the number of the first-stage SCIs is 1 and the number of the second-stage SCIs is 1.

[0057] In combination with some embodiments of the second aspect, in some embodiments, the first-stage SCI is carried in the first time slot, and the second-stage SCI is carried in the time slots where M PSSCHs are located, respectively, and the first time slot is the time slot where the first PSSCH among the M PSSCHs is located, wherein the number of SCIs in the first stage is 1, and the number of SCIs in the second stage is M.

[0058] In combination with some embodiments of the second aspect, in some embodiments, the first information is sent based on a first resource, wherein the first resource appears based on a first period, and the first period is based on one or more of the following configurations, including: a resource pool, a partial bandwidth BWP, or a carrier.

[0059] In combination with some embodiments of the second aspect, in some embodiments, the information field in the second stage SCI includes one or more of the following: a first hybrid automatic repeat request process identifier HARQ process ID, the information field length of the first HARQ process ID is 5 bits, and the first HARQ process ID indicates the HARQ process number of the first PSSCH in the M PSSCHs scheduled by the first information; a first redundancy version Rv, the information field length of the first redundancy version is M bits, and each bit value indicates the redundant version value of 1 PSSCH in the M PSSCHs scheduled by the first information, and M is an integer greater than 1; a first new data indication NDI, the information field length of the first new data indication is M bits, and each bit value indicates the new data indication of 1 PSSCH in the M PSSCHs scheduled by the first information; a first destination identifier Destination ID, the information field of the first destination identifier indicates M destination identifiers, and the information field length of the first destination identifier is Q bits, wherein the value of Q is 16 times M, and each 16-bit bit value indicates the destination terminal of one PSSCH among the M PSSCHs scheduled by the first information; whether the first HARQ feedback is enabled or disabled, the information field length of the first HARQ feedback is M bits, and each bit value indicates the state of enabling or disabling the HARQ feedback of one PSSCH among the M PSSCHs scheduled by the first information; service type, the information field length of the service type is 2 bits; channel state information CSI request, the information field length of the CSI request is 1 bit; first source identifier, the information field length of the first source identifier is 8 bits; area identifier, the information field length of the area identifier is 12 bits; communication distance requirement, the information field length of the communication distance requirement is 4 bits.

[0060] In combination with some embodiments of the second aspect, in some embodiments, the information field in the second stage SCI includes one or more of the following: a second new data indication, the information field length of the second new data indication is 1 bit; a second redundant version, the information field length of the second redundant version is 2 bits; a second HARQ process identifier, the information field length of the second HARQ process identifier is 4 bits; a second destination identifier, the information field length of the second destination identifier is 16 bits; enabling or disabling of the second HARQ feedback, the corresponding information field length of enabling or disabling the second HARQ feedback is 1 bit; a service type, the information field length of the service type is 2 bits; a channel state information CSI request, the information field length of the CSI request is 1 bit; an area identifier, the information field length of the area identifier is 12 bits; a second source identifier, the information field length of the second source identifier is 8 bits; a communication distance requirement, the information field length of the communication distance requirement is 4 bits.

[0061] In combination with some embodiments of the second aspect, in some embodiments, the information field in the first-stage SCI includes one or more of the following: priority value, the information field length of the priority value is 3 times M bits, and each 3-bit bit value indicates the priority value of 1 PSSCH among the M PSSCHs scheduled by the first information; modulation and coding MCS scheme, the information field length of the MCS scheme is 5 bits; resource reservation period, the information field length of the reserved resource period is O bits, where O is the logarithm of P with base 2, and P is the number of resource periods; demodulation reference signal DMRS structure; the format of the second-stage SCI, the information field length of the format of the second-stage SCI is 2 bits; first offset indication value; number of DMRS ports; overhead of the physical side chain feedback channel; first time domain resources; first frequency domain resources; the number M of PSSCHs scheduled by the first information.

[0062] In combination with some embodiments of the second aspect, in some embodiments, the first time domain resource is used to indicate at least one of the following: time domain resources of M consecutive PSSCHs; N reserved time domain resources corresponding to the M PSSCH time domain resources, where N is an integer.

[0063] In combination with some embodiments of the second aspect, in some embodiments, the first time domain resource carried by the first-stage SCI is indicated by way of a time domain resource indication TRIV.

[0064] In combination with some embodiments of the second aspect, in some embodiments, the TRIV is used to indicate a first time domain position; the first time domain position is the time domain position of the first PSSCH in the M PSSCHs reserved each time in the N reserved time domain resources.

[0065] In combination with some embodiments of the second aspect, in some embodiments, the time domain position of the first PSSCH among the M consecutive PSSCHs scheduled this time is the second time domain position, and the second time domain position is obtained based on blind detection; the first time domain position is obtained based on the second time domain position and the offset, and the offset is the offset between the second time domain position and the first time domain position.

[0066] In combination with some embodiments of the second aspect, in some embodiments, the first frequency domain resources are used to indicate at least one of the following: the frequency domain resources of the M PSSCHs scheduled this time, the frequency domain starting positions of the M PSSCH frequency domain resources are the same, and they have the same number of frequency domain resources; the N reserved frequency domain resources corresponding to the M PSSCH frequency domain resources, where N is an integer, and the frequency domain starting positions of the M PSSCH frequency domain resources in each reserved frequency domain resource in the N reserved frequency domain resources are different, and they have the same number of frequency domain resources.

[0067] In combination with some embodiments of the second aspect, in some embodiments, the first frequency domain resource in the first stage SCI is indicated by means of a frequency domain resource FRIV.

[0068] In combination with some embodiments of the second aspect, in some embodiments, the FRIV is used to indicate at least one of the following: the number of frequency domain resources, and the first frequency domain starting position; wherein, the first frequency domain starting position is the frequency domain position of the first PSSCH in the M PSSCHs reserved each time in the N reserved frequency domain resources.

[0069] In combination with some embodiments of the second aspect, in some embodiments, the frequency domain position of the first PSSCH among the M consecutive PSSCHs scheduled this time is the second frequency domain position, and the second frequency domain position is obtained based on blind detection; the first frequency domain position is obtained based on the second time domain position and the offset, and the offset is the offset between the first frequency domain position and the second frequency domain position.

[0070] In a third aspect, an embodiment of the present disclosure proposes a communication method, comprising: a first device sends first information to a second device, wherein the first information is used to schedule M physical side link shared channels PSSCH; the second device obtains the first information and schedules M PSSCHs based on the first information; wherein M is an integer greater than or equal to 1, and the first information includes first-stage side link control information SCI and second-stage SCI.

[0071] In a fourth aspect, an embodiment of the present disclosure proposes a first terminal, comprising: a transceiver module for sending first information to a second terminal, wherein the first information is used to schedule M physical side link shared channels PSSCH; wherein M is an integer greater than or equal to 1, and the first information includes first-stage side link control information SCI and second-stage SCI.

[0072] In the fifth aspect, an embodiment of the present disclosure proposes a second terminal, including: a transceiver module for obtaining first information sent by the first terminal; a processing module for scheduling M physical side link shared channels PSSCH based on the first information; wherein, M is an integer greater than or equal to 1, and the first information includes first-stage side link control information SCI and second-stage SCI.

[0073] In a sixth aspect, an embodiment of the present disclosure proposes a first terminal, comprising: one or more processors; wherein the processor is used to execute the communication method described in the first aspect.

[0074] In a seventh aspect, an embodiment of the present disclosure proposes a first terminal, comprising: one or more processors; wherein the processor is used to execute the communication method described in the second aspect.

[0075] In an eighth aspect, an embodiment of the present disclosure proposes a communication system, comprising: a first terminal and a second terminal, wherein the first terminal is configured to implement the communication method described in the first aspect, and the second terminal is configured to implement the communication method described in the second aspect.

[0076] In a ninth aspect, an embodiment of the present disclosure proposes a storage medium storing instructions. When the instructions are executed on a communication device, the communication device executes the communication method as described in any one of the first aspect or the second aspect.

[0077] In a tenth aspect, an embodiment of the present disclosure proposes a program product. When the program product is executed by a communication device, the communication device executes the method described in the first and second aspects, and the optional implementation methods of the first and second aspects.

[0078] In an eleventh aspect, an embodiment of the present disclosure proposes a computer program, which, when executed on a computer, enables the computer to execute the methods described in the first and second aspects, and the optional implementations of the first and second aspects.

[0079] In a twelfth aspect, an embodiment of the present disclosure provides a chip or a chip system, wherein the chip or chip system includes a processing circuit configured to execute the method described in the optional implementation of the first and second aspects above.

[0080] It is understandable that the above-mentioned terminal, access network device, first network element, second network element, core network device, communication system, storage medium, program product, computer program, chip or chip system are all used to perform the method proposed in the embodiment of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects of the corresponding method and will not be repeated here.

[0081] The present disclosure provides a communication method, a terminal, and a communication system. In some embodiments, the terms "communication method" and "information processing method" and "data processing method" are interchangeable; the terms "communication device" and "information processing device" and "data processing device" are interchangeable; and the terms "information processing system" and "communication system" are interchangeable.

[0082] The embodiments of the present disclosure are not exhaustive and are merely illustrative of some embodiments, and are not intended to be a specific limitation on the scope of protection of the present disclosure. In the absence of contradiction, each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged. In addition, the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined. For example, some or all steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0083] In each embodiment of the present disclosure, unless otherwise specified or provided for by logic, the terms and / or descriptions between the embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form a new embodiment based on their inherent logical relationships.

[0084] The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

[0085] In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular, such as "a", "an", "the", "above", "said", "the", "the", etc., may mean "one and only one", or "one or more", "at least one", etc. For example, when using articles such as "a", "an", "the" in English in translation, the noun following the article may be understood as a singular expression or a plural expression.

[0086] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0087] In some embodiments, the terms "at least one," "one or more," "a plurality of," "multiple," etc. may be used interchangeably.

[0088] In some embodiments, descriptions such as "at least one of A and B," "A and / or B," "A in one case, B in another case," or "in response to one case A, in response to another case B" may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); and in some embodiments, A and B (both A and B are executed). The above is also applicable when there are more branches such as A, B, and C.

[0089] In some embodiments, "A or B" and other descriptions may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). The above is also applicable when there are more branches such as A, B, C, etc.

[0090] The prefixes such as "first" and "second" in the embodiments of the present disclosure are only used to distinguish different description objects and do not constitute any restriction on the position, order, priority, quantity or content of the description objects. For the statement of the description object, please refer to the description in the context of the claims or embodiments, and no unnecessary restriction should be constituted due to the use of prefixes. For example, if the description object is a "field", the ordinal number before the "field" in the "first field" and the "second field" does not limit the position or order between the "fields". "First" and "second" do not limit whether the "fields" they modify are in the same message, nor do they limit the order of the "first field" and the "second field". For another example, if the description object is a "level", the ordinal number before the "level" in the "first level" and the "second level" does not limit the priority between the "levels". For another example, the number of description objects is not limited by the ordinal number and can be one or more. Taking "first device" as an example, the number of "devices" can be one or more. In addition, the objects modified by different prefixes can be the same or different. For example, if the description object is "device", then the "first device" and the "second device" can be the same device or different devices, and their types can be the same or different; for another example, if the description object is "information", then the "first information" and the "second information" can be the same information or different information, and their contents can be the same or different.

[0091] In some embodiments, “including A,” “comprising A,” “used to indicate A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0092] In some embodiments, terms such as "time / frequency" and "time / frequency domain" refer to the time domain and / or the frequency domain.

[0093] In some embodiments, terms such as "in response to...", "in response to determining...", "in the case of...", "at the time of...", "when...", "if...", "if...", etc. can be used interchangeably.

[0094] In some embodiments, terms such as "greater than", "greater than or equal to", "not less than", "more than", "more than or equal to", "not less than", "higher than", "higher than or equal to", "not less than", and "above" can be replaced with each other, and terms such as "less than", "less than or equal to", "not greater than", "less than", "less than or equal to", "not more than", "lower than", "lower than or equal to", "not higher than", and "below" can be replaced with each other.

[0095] In some embodiments, devices, etc. can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. Terms such as "device", "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", and "subject" can be used interchangeably.

[0096] In some embodiments, "network" can be interpreted as devices included in the network (eg, access network equipment, core network equipment, etc.).

[0097] In some embodiments, the terms "access network device (AN device)", "radio access network device (RAN device)", "base station (BS)", "radio base station" "fixed station", "node", "access point", "transmission point (TP)", "reception point (RP)", "transmission / reception point (TRP)" "panel", "antenna panel", "antenna array", "cell", "macro cell", "small cell", "femto cell", "pico cell", "sector", "cell group", "serving cell", "carrier", "component carrier", "bandwidth part (BWP)" and the like may be used interchangeably.

[0098] In some embodiments, the terms "terminal", "terminal device", "user equipment (UE)", "user terminal", "mobile station (MS)", "mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, etc. can be used interchangeably.

[0099] In some embodiments, the access network device, the core network device, or the network device can be replaced by a terminal. For example, the various embodiments of the present disclosure can also be applied to a structure in which the communication between the access network device, the core network device, or the network device and the terminal is replaced by communication between multiple terminals (for example, device-to-device (D2D), vehicle-to-everything (V2X), etc.). In this case, it is also possible to set the structure in which the terminal has all or part of the functions of the access network device. In addition, terms such as "uplink" and "downlink" can also be replaced by terms corresponding to communication between terminals (for example, "side"). For example, uplink channels, downlink channels, etc. can be replaced by side channels, and uplinks, downlinks, etc. can be replaced by side links.

[0100] In some embodiments, the terminal may be replaced by an access network device, a core network device, or a network device. In this case, the access network device, the core network device, or the network device may have a structure that has all or part of the functions of the terminal.

[0101] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0102] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0103] In addition, each element, each row, or each column in the table of the embodiment of the present disclosure can be implemented as an independent embodiment, and the combination of any elements, any rows, and any columns can also be implemented as an independent embodiment.

[0104] In some embodiments, the first terminal 101 and / or the second terminal 102 include, for example, a mobile phone, a wearable device, an Internet of Things device, a car with communication function, a smart car, a tablet computer, 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, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, and at least one of a wireless terminal device in a smart home, but are not limited thereto.

[0105] 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 proposed in the embodiment of the present disclosure. Ordinary technicians in this field can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution proposed in the embodiment of the present disclosure is also applicable to similar technical problems.

[0106] The following embodiments of the present disclosure may be applied to the communication system 100 shown in FIG1 , or a portion thereof, but are not limited thereto. The entities shown in FIG1 are illustrative only. The communication system may include all or part of the entities shown in FIG1 , or may include other entities outside of FIG1 . The number and form of the entities are arbitrary, and the entities may be physical or virtual. The connection relationships between the entities are illustrative only. The entities may be connected or disconnected, and the connection may be in any manner, including direct or indirect, wired or wireless.

[0107] The embodiments of the present disclosure can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G new radio (NR), future radio access (FRA), new radio access technology (RAT), new radio (NR), new radio access (NX), future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), Public Land Mobile Network (PLMN) networks, Device-to-Device (D2D) systems, Machine-to-Machine (M2M) systems, Internet of Things (IoT) systems, Vehicle-to-Everything (V2X), systems utilizing other communication methods, and next-generation systems based on and extending these methods. Furthermore, multiple systems may be combined (for example, a combination of LTE or LTE-A with 5G).

[0108] Sidelink Control Information (SCI) is used to send control information on the Physical Sidelink Control Channel (PSCCH) to schedule the Physical Sidelink Shared Channel (PSSCH).

[0109] In some embodiments, to mitigate the impact of Listen Before Talk (LBT) failures and reduce the complexity of blind detection, one Downlink Control Information (DCI) is supported for scheduling multiple Physical Downlink Shared Channels (PDSCHs) or multiple Physical Uplink Shared Channels (PUSCHs). Multiple PDSCHs can be continuous or discontinuous. Multiple PUSCHs can be continuous or discontinuous.

[0110] Based on this, the DCI blind detection process is performed based on the priority of the time slot resource group (slot-group level) rather than the priority of the individual time slot resource (slot level).

[0111] In some embodiments, according to the sidelink communication implemented in R16 or R17, only one SCI is supported to schedule one physical sidelink shared channel (PSSCH) during the communication process.

[0112] In some embodiments, the sidelink control information in the scenario of supporting one SCI scheduling one PSSCH includes: first-stage SCI and second-stage SCI.

[0113] In some embodiments, the first stage SCI is called SCI1-A, and the information field of SCI1-A includes the following:

[0114] Priority, frequency domain resource indication, time domain resource indication, resource reservation period, structure of demodulation reference signal (DMRS), format of second stage SCI, indication of beta (β) offset, DMRS port, modulation and coding scheme (MCS), indication of additional MCS table, indication of PSFCH overhead, and reserved bits.

[0115] In some embodiments, the field length corresponding to the information field of SCI1-A includes:

[0116] The information field length of the priority is 3 bits, the information field length corresponding to the structural format of the second stage SCI is 2 bits, the information field length of the beta offset indication is 2 bits, the information field length of the DMRS port is 1 bit, the information field length of the MCS is 5 bits, and the information field length of the additional MCS table indication is any of the following: 0 bit, 1 bit or 2 bits.

[0117] In some embodiments, the length of the information field of the resource reservation period, O, is calculated based on the following formula: O=log2N rsv_period

[0118] Among them, N rsv_period Indicates the number of supported reservation periods.

[0119] In some embodiments, the information field length K of the DMRS structure is calculated based on the following formula: K=log2N pattern

[0120] Among them, N pattern Indicates the number of supported DMRS structures.

[0121] In some embodiments, the second stage SCI may include SCI2-A and four forms: SCI2-B, SCI2-C, and SCI2-D.

[0122] In some embodiments, the information field of SCI2-A includes the following:

[0123] New Data Indicator (NDI), Redundant Version (Rv) indication, Hybrid Automatic Repeat Request Process ID (HARQ process ID), Source ID, Destination ID, HARQ enable or disable, service type, and Channel State Information (CSI) request.

[0124] In some embodiments, the field length corresponding to the information field of SCI2-A includes:

[0125] The information field length corresponding to NDI is 1 bit, the information field length of Rv is 2 bits, the information field length of HARQ process ID is 4 bits, the information field length of source ID is 8 bits, the information field length of destination ID is 16 bits, the information field length of enabling or disabling HARQ feedback is 1 bit, the information field length of service type is 2 bits, and the information field length of CSI request is 1 bit.

[0126] In some embodiments, the information field of SCI2-B includes the following:

[0127] NDI, Rv, HARQ process ID, source ID, destination ID, HARQ feedback enable or disable, area identification, and communication distance requirements.

[0128] In some embodiments, the field length corresponding to the information field of SCI2-B includes:

[0129] The information field length corresponding to NDI is 1 bit, the information field length corresponding to Rv is 2 bits, the information field length of HARQ process ID is 4 bits, the information field length of source ID is 8 bits, the information field length of destination ID is 16 bits, the information field length of enabling or disabling HARQ feedback is 1 bit, the information field length of area identification is 12 bits, and the information field length of communication distance requirement is 4 bits.

[0130] It can be understood that, based on the information field content of the above-mentioned SCI and the field length of each information field content, scheduling of one SCI to one PSSCH can be achieved.

[0131] In order to reduce the number of blind detections and the impact of LBT, it is considered to schedule multiple PSSCHs with one SCI. Obviously, it is not possible to schedule multiple PSSCHs with one SCI based on the information field of the above SCI.

[0132] Based on this, an embodiment of the present disclosure proposes a communication method to enable one SCI to schedule multiple PSSCHs for communication.

[0133] FIG2A is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG2A , the embodiment of the present disclosure relates to a communication method, and the method includes:

[0134] Step S2101: The first terminal 101 sends first information to the second terminal 102.

[0135] In some embodiments, the first terminal 101 may be referred to as a first device, and the second terminal 102 may be referred to as a second device.

[0136] Exemplarily, the first device sends first information to the second device.

[0137] In some embodiments, the second terminal 102 receives the first information.

[0138] In some embodiments, the second terminal 102 receives the first information sent by the first terminal 101.

[0139] In some embodiments, the names of information, etc. are not limited to the names described in the embodiments, and terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", "field", "symbol", "symbol", "codeword", "codebook", "codeword", "codepoint", "bit", "data", "program", and "chip" can be used interchangeably.

[0140] In some embodiments, "obtain", "get", "get", "receive", "transmit", "bidirectional transmission", "send and / or receive" can be interchangeable, and can be interpreted as receiving from other entities, obtaining from protocols, obtaining from higher layers, obtaining by self-processing, autonomous implementation, etc.

[0141] In some embodiments, terms such as "send", "transmit", "report", "download", "transmit", "bidirectional transmission", "send and / or receive" can be used interchangeably.

[0142] In some embodiments, terms such as "certain", "preset", "preset", "setting", "indicated", "a certain", "any", and "first" can be interchangeable. "Specific A", "preset A", "preset A", "setting A", "indicated A", "a certain A", "any A", and "first A" can be interpreted as A pre-specified in a protocol, etc., or as A obtained through setting, configuration, or indication, etc., or as specific A, a certain A, any A, or first A, etc., but not limited to this.

[0143] In some embodiments, the first information is used to schedule M physical sidelink shared channels PSSCH, where M is an integer greater than or equal to 1.

[0144] In some embodiments, terms such as "uplink", "uplink", "physical uplink" can be interchangeable with each other, and terms such as "downlink", "downlink", "physical downlink" can be interchangeable with each other, and terms such as "side", "sidelink", "side communication", "sidelink communication", "direct connection", "direct link", "direct communication", "direct link communication" can be interchangeable with each other.

[0145] In some embodiments, the first information may be side link control information SCI.

[0146] In some embodiments, the first information includes a first-stage SCI and a second-stage SCI.

[0147] In some embodiments, the first information has at least two of the following forms:

[0148] -A) The first-stage SCI and the second-stage SCI are carried in the first time slot, where the first time slot is the time slot where the first PSSCH among the M PSSCHs is located;

[0149] The first information includes first-stage SCIs corresponding to M PSSCHs and second-stage SCIs corresponding to M PSSCHs, wherein the number of first-stage SCIs is 1 and the number of second-stage SCIs is 1.

[0150] -B) The first-stage SCI is carried in the first time slot, and the second-stage SCI is carried in the time slots where M PSSCHs are located. The first time slot is the time slot where the first PSSCH among the M PSSCHs is located. The number of SCIs in the first stage is 1, and the number of SCIs in the second stage is M.

[0151] In some embodiments, for the first information of form-A) and / or the first information of form-B), the first information is sent based on first resources, wherein the first resources appear based on a first period, and the first period is based on a resource pool configuration.

[0152] For example, if the PSSCH period is X slots, then the PSCCH resource appears once every X slots, where X is an integer.

[0153] In some embodiments, for the first information of form-A) and / or form-B), the information fields in the second-stage SCI include one or more of the following:

[0154] First hybrid automatic repeat request process identifier (HARQ process ID), first redundancy version (RV), first new data indicator (NDI), first destination ID, first source ID, first HARQ feedback enable / disable service type (cast type indicator), channel state information (CSI) request, second source ID, zone ID, and communication range requirement.

[0155] In some embodiments, the information field length of the HARQ process identifier is 5 bits, and the first HARQ process ID indicates the HARQ process number of the first PSSCH among the M PSSCHs scheduled by the first information.

[0156] In some embodiments, the HARQ process identifiers corresponding to the scheduled 2nd to M-1th PSSCHs may be determined implicitly.

[0157] Exemplarily, the HARQ process value of the first PSSCH indicated is incremented by 1.

[0158] For example, the HARQ process ID of the first PSSCH indicated by SCI is 10. Among the M PSSCHs, assuming M=4, the HARQ process IDs of the second to fourth PSSCHs are incremented by 1 based on the HARQ process value 10 of the indicated first PSSCH, which are 11, 12, and 13 respectively.

[0159] In some embodiments, the information field length of the first redundant version is M bits, and each bit value indicates the redundant version value of one PSSCH among the M PSSCHs scheduled by the first information, where M is an integer greater than 1.

[0160] In some embodiments, the information indicated by the first redundancy version may be set based on any of the following methods:

[0161] -a) In the information field of the first redundancy version, the lowest bit of the bit value corresponds to the redundancy version value of the first PSSCH among the M scheduled PSSCHs.

[0162] For example, when M=4, the information field length of the first redundant version is 4 bits, and the bit value is 0101. The lowest bit of the bit value corresponds to the redundant version value of the first PSSCH among the M scheduled PSSCHs, that is, the lowest bit 1 in 0101 corresponds to the RV value of the first PSSCH among the M PSSCHs, the first lowest bit 0 corresponds to the RV value of the second PSSCH among the M PSSCHs, the second lowest bit 1 corresponds to the RV value of the third PSSCH among the M PSSCHs, and the highest bit 0 corresponds to the redundant version value of the fourth PSSCH among the M PSSCHs.

[0163] The first PSSCH among the M PSSCHs refers to the PSSCH located first in the time domain, and the second PSSCH can be understood as the PSSCH located after the first PSSCH in the time domain.

[0164] It can be understood that in the subsequent embodiments of the present disclosure, the description of the "first PSSCH" can be understood as the first PSSCH in the M PSSCHs refers to the PSSCH located at the front in the time domain, and the description of the "second PSSCH" can be understood as the PSSCH located after the second PSSCH in the time domain. For ease of understanding, they will not be described one by one later.

[0165] -b) In the information field of the first redundancy version, the highest bit of the bit value corresponds to the redundancy version value of the first PSSCH among the scheduled M PSSCHs.

[0166] For example, when M=4, the information field length of the first redundant version is 4 bits, and the bit value is 0101. The highest bit of the bit value corresponds to the redundant version value of the first PSSCH among the M scheduled PSSCHs, that is, the highest bit 0 in 0101 corresponds to the RV value of the first PSSCH among the M PSSCHs, the first highest bit 1 corresponds to the RV value of the second PSSCH among the M PSSCHs, the second highest bit 0 corresponds to the RV value of the third PSSCH among the M PSSCHs, and the lowest bit 1 corresponds to the redundant version value of the fourth PSSCH among the M PSSCHs.

[0167] In some embodiments, the length of the information field corresponding to the first new data indication is M bits, and the value of each bit indicates the new data indication of M PSSCHs scheduled by the first information.

[0168] In some embodiments, the information indicated by the first new data indication may be set based on any of the following methods:

[0169] -a) In the information field of the first new data indication identifier, the lowest bit of the bit value corresponds to the value of the new data indication of the first PSSCH among the M scheduled PSSCHs.

[0170] -b) In the information field of the first new data indication identifier, the highest bit of the bit value corresponds to the value of the new data indication of the first PSSCH among the M scheduled PSSCHs.

[0171] For example, if there is an SCI that schedules 4 PSSCHs, the bit value is 1110, based on -a), the lowest bit of the bit value is 0, which indicates that the NDI value of the first PSSCH among M PSSCHs is 0, that is, the transmission is a retransmission.

[0172] In some embodiments, the information field of the first destination identifier indicates M destination identifiers, wherein the information field length of the first destination identifier is Q bits, wherein the value of Q is 16 times M, and each 16-bit value indicates the destination terminal of one PSSCH among the M PSSCHs scheduled by the first information. If M=3, the lowest 16-bit value indicates the destination identifier of the first PSSCH among the M PSSCHs scheduled, the next lowest 16 bits indicate the destination identifier of the second PSSCH among the M PSSCHs scheduled, and the highest 16 bits indicate the destination identifier of the third PSSCH among the M PSSCHs scheduled.

[0173] In some embodiments, when the value of M is 1, the M PSSCHs scheduled by the SCI can be understood as being sent to the same destination terminal.

[0174] In some embodiments, the information field length of enabling or disabling the first HARQ feedback is M bits, and each bit value indicates the HARQ feedback enabling or disabling state of 1 PSSCH among the M PSSCHs scheduled by the first information.

[0175] In some embodiments, the enabling or disabling flag of the first HARQ feedback may be set based on any of the following methods:

[0176] -a) The lowest bit of the bit value corresponds to the enabling or disabling status value of the HARQ feedback of the first PSSCH among the M PSSCHs scheduled by the SCI.

[0177] -b) The most significant bit of the bit value corresponds to the enabling or disabling status value of the HARQ feedback of the first PSSCH among the M PSSCHs scheduled by the SCI.

[0178] The first PSSCH refers to the PSSCH that is located at the front in the time domain among the M PSSCHs.

[0179] For example, if there is an SCI that schedules 4 PSSCHs, the bit value is 1110, and according to option 1, the lowest bit of the bit value is 0, it indicates that the HARQ feedback status of the first PSSCH among M PSSCHs is disabled, that is, the PSSCH does not support HARQ feedback.

[0180] In some embodiments, the service type information field is 2 bits long.

[0181] In some embodiments, the information field of the CSI request is 1 bit in length.

[0182] In some embodiments, the information field of the first source identification is 8 bits.

[0183] In some embodiments, the communication distance requires that the information field length be less than or equal to 4 bits.

[0184] In some embodiments, for the first information of form-A) and / or form-B), the information fields in the second-stage SCI include one or more of the following:

[0185] second new data indication, second redundancy version, second HARQ process identifier, second destination identifier, second source identifier, enabling or disabling of second HARQ feedback, service type, CSI request, area identifier, and communication distance requirement.

[0186] In some embodiments, the information field in the second-stage SCI may reuse the information field in the second-stage SCI involved in the R16 sidelink communication scenario.

[0187] In some embodiments, the information field length of the second new data indication is 1 bit.

[0188] In some embodiments, the information field length of the second redundancy version is 2 bits.

[0189] In some embodiments, the information field length of the second HARQ process identifier is 4 bits.

[0190] In some embodiments, the information field of the second destination identifier is 16 bits long.

[0191] In some embodiments, the length of the information field corresponding to the second source identifier is 8 bits.

[0192] In some embodiments, the information field length of the enable or disable flag of the second HARQ feedback is 1 bit.

[0193] In some embodiments, the service type information field is 2 bits long.

[0194] In some embodiments, the information field of the CSI request is 1 bit in length.

[0195] In some embodiments, the information field of the region identifier is 12 bits long.

[0196] In some embodiments, the information field length of the communication distance requirement is 4 bits.

[0197] In some embodiments, for the first information of form-A) and / or form-B), the information fields in the first-stage SCI include one or more of the following:

[0198] Priority value, modulation and coding MCS scheme, resource reservation period, demodulation reference signal DMRS structure, format of the second stage SCI, first offset indication value, number of DMRS ports, overhead of the physical sidelink feedback channel PSFCH, first time domain resources, first frequency domain resources and the number M of PSSCHs scheduled for the first information.

[0199] In some embodiments, the information field length of the priority value is 3 times M bits, and each 3-bit value indicates the priority value of 1 PSSCH among the M PSSCHs scheduled by the first information.

[0200] In some embodiments, the priority value may be set based on any of the following methods:

[0201] -a) The lowest 3 bits correspond to the priority value of the first PSSCH among the M scheduled PSSCHs.

[0202] -b) The highest 3-bit value corresponds to the priority value of the first PSSCH among the M scheduled PSSCHs.

[0203] For example, there is an SCI that schedules 4 PSSCHs, the bit value is 111010011, and based on the -a) scheme, the lowest bit of the bit value is 011, indicating that the priority value of the first PSSCH among M PSSCHs is 3.

[0204] In some embodiments, the length O of the information field corresponding to the resource reservation period is calculated based on the following formula: O=log2N rsv_period

[0205] Among them, N rsv_period Indicates the number of supported reservation periods.

[0206] In some embodiments, the information field length of the structure format of the second stage SCI is 2 bits.

[0207] In some embodiments, the first offset may be a beta offset.

[0208] In some embodiments, the information field length of the indication of the first offset is 2 bits.

[0209] In some embodiments, the information field length of the DMRS port is 1 bit.

[0210] In some embodiments, the information field of the MCS is 5 bits long.

[0211] For ease of understanding, the frequency domain resource indication is schematically illustrated using the embodiment of Figure 2B. Figure 2B discloses a schematic diagram of a scenario in which one SIC schedules multiple PSSCHs. As shown in Figure 2B, one SCI schedules three different PSSCHs. The three PSSCHs scheduled by the SCI for this transmission are located in slot 0, slot 1, and slot 2, respectively.

[0212] Continuing with the embodiment of Figure 2B, the first-stage SCI carries the first-stage control information of the three PSSCHs (PSSCHs located in slot 0, slot 1, and slot 2), and the first-stage control information is only located in slot 0. The second-stage SCI corresponding to the second PSSCH is located in slot 1 where PSSCH2 is located, and the second-stage SCI corresponding to the third PSSCH is located in slot 3 where PSSCH3 is located.

[0213] In some embodiments, terms such as "frame", "radio frame", "subframe", "slot", "sub-slot", "mini-slot", "symbol", "symbol", and "transmission time interval (TTI)" can be used interchangeably.

[0214] In some embodiments, for the first time domain resource, applicable situations may include at least one of the following situations:

[0215] -a) One SCI schedules M PSSCH transmissions, where the M PSSCHs are discontinuous in the time domain.

[0216] -b) 1 SCI schedules M PSSCH transmissions, where the M PSSCHs are continuous in the time domain.

[0217] In some embodiments, for the case where the first time domain resource is -a), one SCI can indicate at most two reserved resources.

[0218] In some embodiments, for the case where the first time domain resource is -a), the first time domain resource is used to indicate at least one of the following:

[0219] M time resource indication values ​​(TRIVs), or M-1 offset values.

[0220] In some embodiments, for the case where the first time domain resource is -a), at least one of the following items is further included:

[0221] In some embodiments, each TRIV indicates the resources of a scheduled PSSCH for current transmission and the location of the reserved resources once or the location of the reserved resources twice.

[0222] In some embodiments, M TRIVs respectively indicate the current transmission resources corresponding to M PSSCHs scheduled by one SCI and the position of the reserved resources once or the position of the reserved resources twice.

[0223] In some embodiments, the position of the reserved 1st resource or the position of the reserved 2nd resource may be indicated based on the following method: the bits are indicated in order from high to low.

[0224] In some embodiments, the TRIV located at the highest bit position is the first TRIV, indicating the position of the resources corresponding to the first PSSCH among the M scheduled PSSCHs in this transmission, the position of the reserved resources once, or the position of the resources reserved twice. The TRIV located at the second highest bit position is the second TRIV, indicating the position of the resources corresponding to the second PSSCH among the M scheduled PSSCHs in this transmission, the position of the reserved resources once, or the position of the resources reserved twice. According to this rule, M TRIVs respectively indicate the current transmission resources and the position of the reserved resources once or the position of the reserved resources twice corresponding to the M PSSCHs scheduled by 1 SCI.

[0225] If M=4, the four PSSCHs are located in slot 1, slot 2, slot 3, and slot 4 respectively. The first PSSCH is the first PSSCH in the time domain and is located in slot 1. The second PSSCH is the second first PSSCH in the time domain and is located in slot 2. The third PSSCH is located in slot 3, and the fourth PSSCH is located in slot 4.

[0226] It should be noted that the reserved resources here can be understood as reserved time-frequency resources, that is, time-domain resources and / or frequency-domain resources.

[0227] It can be understood that the reserved resources involved in the following embodiments of the present disclosure can be understood as reserved time-frequency resources based on the corresponding embodiments. For the convenience of description, they will not be described one by one later.

[0228] Exemplarily, the lowest bit of the TRIV is the first TRIV, indicating the position of the resource corresponding to the first PSSCH in the time domain that is the first among the scheduled M PSSCHs in this transmission, the position of the reserved 1st resource, or the position of the reserved 2nd resource.

[0229] In some embodiments, M-1 offset values ​​respectively indicate time slot offset values ​​of the resources of the current transmission indicated in the 2nd TRIV to the Mth TRIV relative to the first PSSCH resource indicated in the first TRIV.

[0230] In some embodiments, the information field corresponding to each offset value has a length of log 2(a) bits, where a is an integer greater than or equal to 1 and less than 32.

[0231] In some embodiments, the time domain position of the first PSSCH resource indicated by the first TRIV is obtained based on the blind detection SCI.

[0232] In some embodiments, for the case where the first time domain resource is -b), one SCI can indicate at most two reserved resources.

[0233] In some embodiments, for the case where the first time domain resource is -b), at least one of the following items is further included:

[0234] In some embodiments, 1 TRIV is used to indicate the first time domain position.

[0235] In some embodiments, the first time domain position is the time domain position of the first PSSCH among the M PSSCHs reserved N times.

[0236] In some embodiments, the time domain position of the first PSSCH among the M consecutive PSSCHs scheduled this time is the second time domain position, and the second time domain position is obtained based on blind detection.

[0237] In some embodiments, the first time domain position is obtained based on the second time domain position and an offset, where the offset is an offset between the second time domain position and the first time domain position.

[0238] For example, the time domain starting position of the first PSSCH in the M consecutive PSSCHs transmitted this time is obtained through blind detection SCI, denoted as slot m, and M PSSCHs are transmitted continuously, so the M consecutive PSSCH resources transmitted this time are respectively located in slot m, slot (m+1), slot (m+2)... slot (m+M-1), where m is an integer greater than 0.

[0239] If M consecutive PSSCH resources are reserved for one time, and TRIV indicates the offset value n of the time domain starting position of the first PSSCH in the first consecutive M PSSCHs reserved relative to the time domain starting position of the first PSSCH in the current consecutive M PSSCHs transmitted, then the time domain starting position of the first PSSCH in the first consecutive M PSSCH resources reserved for the first time can be obtained as "m+n", and M PSSCHs are transmitted continuously, so the reserved first M consecutive PSSCH resources are located in slot (m+n), slot (m+n+1), slot (m+n+2)...slot (m+n+M-1) respectively, where n is an integer greater than 0.

[0240] It can be understood that if M consecutive PSSCH resources are reserved for two times, then TRIV indicates the time domain starting position of the first PSSCH in the second consecutive M PSSCHs reserved. When the offset value relative to the time domain position of the first PSSCH in the current M consecutive PSSCHs is x, the time domain starting position of the first PSSCH in the reserved second consecutive M PSSCH resources can be obtained as "m+x", and M PSSCHs are transmitted continuously, so the first consecutive M PSSCH resources reserved are located in slot (m+x), slot (m+x+1), slot (m+x+2) ... slot (m+x+M-1), where x is an integer greater than 0. In some embodiments, the starting position of the time domain can be described based on the time slot.

[0241] In some embodiments, the bit length p of the number M of consecutive PSSCHs scheduled by SCI can be obtained based on the following formula: p = log 2 (M)

[0242] In some embodiments, the first time domain position is obtained based on blind detection; the second time domain position is obtained based on the first time domain position and an offset, where the offset is the offset between the second time domain position and the first time domain position.

[0243] In some embodiments, the first frequency domain resource is used to indicate at least one of the following:

[0244] -a) The same M PSSCH frequency domain resources have the same frequency domain starting position and the same number of frequency domain resources.

[0245] -b) Different frequency domain resources of M PSSCHs: The starting positions of the frequency domain resources of the scheduled M PSSCHs are different, but the number of used resources is the same.

[0246] In some embodiments, when the first frequency domain resource is -a) and / or -b), the frequency domain position of the first PSSCH in the M consecutive PSSCHs scheduled this time is the second frequency domain position, and the second frequency domain position is obtained based on blind detection.

[0247] The first frequency domain position is obtained based on the second time domain position and an offset, where the offset is an offset between the first frequency domain position and the second frequency domain position.

[0248] In some embodiments, when the first frequency domain resource is indicated as -a), it indicates at least one of the following:

[0249] The frequency domain resources of the M PSSCHs scheduled this time have the same frequency domain starting position of the frequency domain resources of the M PSSCHs and have the same number of frequency domain resources. The M PSSCH frequency domain resources correspond to N reserved frequency domain resources, where N is an integer. The frequency domain starting position of the M PSSCH frequency domain resources in each reserved frequency domain resource in the N reserved frequency domain resources is different, and have the same number of frequency domain resources.

[0250] For example, the frequency domain starting positions of the frequency domain resources of the M PSSCHs scheduled this time are the same. If they are all located on subchannel 3, have the same number of frequency domain resources, and occupy 4 subchannels, then the frequency domain resources of each PSSCH in the M PSSCHs are located on subchannels 3, 4, 5, and 6.

[0251] For another example, the frequency domain starting positions of the M PSSCH frequency domain resources reserved for the first time are the same. If they are all located on subchannel 2, have the same number of frequency domain resources, and occupy 4 subchannels, then the frequency domain resources of each PSSCH in the first reserved MPSSC are all located on subchannels 2, 3, 4, and 5.

[0252] For another example, the frequency domain starting positions of the M PSSCH frequency domain resources reserved for the second time are the same, that is, they are all located on subchannel 5, and have the same number of frequency domain resources, and all occupy 4 subchannels. Then the frequency domain resources of each PSSCH in the M PSSCHs reserved for the first time are all located on subchannels 5, 6, 7, and 8.

[0253] It can be understood that the starting positions of the frequency domain resources of the M PSSCHs reserved for the first time and the M PSSCHs reserved for the second time are different from those of the M PSSCHs scheduled this time. As described above, the frequency domain starting position of the M PSSCHs reserved for the first time is located on subchannel 2, the frequency domain starting position of the M PSSCHs reserved for the second time is located on subchannel 5, and the frequency domain starting position of the M PSSCHs scheduled this time is located on subchannel 3.

[0254] Optionally, the number of frequency domain resources may be based on the number of subchannels or other frequency domain resource granularity.

[0255] Illustratively, the resource granularity is represented by resource block (RB), resource block group (RBG), interlace, and resource block set (RB set).

[0256] In some embodiments, the first frequency domain resource in the first stage SCI is indicated by one frequency domain resource FRIV.

[0257] In some embodiments, when the first frequency domain resource indication is -a), the first frequency domain resource in the first stage SCI is indicated by one frequency domain resource FRIV.

[0258] In some embodiments, FRIV is used to indicate at least one of the following: the number of frequency domain resources, the first frequency domain starting position; wherein the first frequency domain starting position is the frequency domain position of the first PSSCH in the M PSSCHs reserved each time in the N reserved frequency domain resources.

[0259] In some embodiments, when the first frequency domain resource indication is -a), FRIV is used to indicate at least one of the following: the number of frequency domain resources, the starting position of the first frequency domain; wherein the starting position of the first frequency domain is the frequency domain position of the first PSSCH in the M PSSCHs reserved each time in the N reserved frequency domain resources.

[0260] Exemplarily, when the first frequency domain resource indication is -a), FRIV is used to indicate: when resources are reserved once, FRIV indicates the number of resources used in the frequency domain and the starting position of the reserved resources once.

[0261] Optionally, the number of used resources is the same as the number of frequency domain resources for this transmission and the number of frequency domain resources for the reserved resources.

[0262] Optionally, when the first frequency domain resource indication is -a), the frequency domain starting position of this transmission is determined through blind detection.

[0263] Exemplarily, for the case where the first frequency domain resource indication is -a), FRIV is used to indicate: when resources are reserved twice, FRIV indicates the number of resources used in the frequency domain and the starting positions of the resources reserved once and twice, and the number of resources used is the same for the number of frequency domain resources for this transmission, the number of frequency domain resources reserved once, and the number of frequency domain resources reserved twice.

[0264] Optionally, when the first frequency domain resource indication is -a), the frequency domain starting position of this transmission is determined through blind detection.

[0265] In some embodiments, when the first frequency domain resource is -b), at least one of the following is indicated:

[0266] For different M PSSCH frequency domain resources, the starting positions of the frequency domain resources of the scheduled M PSSCHs are different, but the number of resources used is the same; for 1 PSSCH, the starting positions of its reserved resources and the frequency domain resources of this transmission may be different, but the number of frequency domain resources is the same.

[0267] Optionally, the number of frequency domain resources may be expressed based on the number of subchannels.

[0268] In some embodiments, when the first frequency domain resource is -b), the first frequency domain resource indication in one first stage SCI is used to indicate one frequency domain resource indication value FRIV and M-1 second offset values.

[0269] In some embodiments, when the first frequency domain resource is -b), one FRIV indicates at least one of the following:

[0270] The frequency domain resources of the first PSSCH among the M PSSCHs scheduled this time, the frequency domain resources of the first PSSCH among the frequency domain resources of the reserved M PSSCHs for the first time, and the frequency domain resources of the first PSSCH among the frequency domain resources of the reserved M PSSCHs for the second time.

[0271] It can be understood that the frequency domain resources of the first PSSCH in the frequency domain resources of the reserved first M PSSCHs can be the starting subchannel number of the first PSSCH and / or the number of subchannels used. The frequency domain resources of the first PSSCH in the frequency domain resources of the reserved second M PSSCHs can be the starting subchannel number of the first PSSCH and / or the number of subchannels used.

[0272] In some embodiments, for M-1 second offset values, the bit length q corresponding to each second offset value can be obtained based on the following formula:

[0273] q=log(X), where X is the number of subchannels included in the resource pool, and X is an integer greater than or equal to 1.

[0274] In some embodiments, each second offset value indicates a subchannel offset value of the frequency domain starting position of the 2nd to Mth PSSCHs in the M PSSCHs scheduled each time by the SCI relative to the frequency domain starting position of the 1st PSSCH.

[0275] In some embodiments, the frequency domain starting position of the first PSSCH in the M PSSCHs scheduled by the SCI each time is determined by blind detection.

[0276] For ease of understanding, the frequency domain resource indication embodiment of FIG2C is schematically illustrated. FIG2C discloses a schematic diagram of a scenario in which one SIC schedules multiple PSSCHs. As shown in FIG2C , FIG2C is a schematic diagram of a scenario in which one SCI schedules four PSSCHs when the first information is an SCI and the first information is based on the -A) format.

[0277] In the embodiment of FIG2C , one SCI indicates one FRIV, and one SCI schedules four different PSSCHs, wherein the first-stage SCI and the second-stage SCI of the four PSSCHs are both carried in the first time slot, for example, slot 0.

[0278] The control information for slot0 will indicate the starting position and subchannel number of the frequency domain resources where the first PSSCH of the four PSSCHs reserved for the first time (for example, the PSSCH located in slot9) is located, and will also indicate the starting position and subchannel number of the frequency domain resources where the first PSSCH of the four PSSCHs reserved for the second time (for example, the PSSCH located in slot24) is located.

[0279] Continuing with the embodiment of FIG2C , the frequency domain starting position of the PSSCH in slot 0 can be determined by blind detection. The frequency domain starting position of the PSSCH in slot 1 can be determined based on the indicated offset 1 (offset1), the frequency domain starting position of the PSSCH in slot 2 can be determined based on the indicated offset 2, and the frequency domain starting position of the PSSCH in slot 3 can be determined based on the indicated offset 3.

[0280] Step S2102: The second terminal 102 schedules M PSSCHs based on the first information.

[0281] In some embodiments, the second terminal 102 schedules M PSSCHs based on the first information sent by the first terminal 101.

[0282] In some embodiments, the second terminal 102 schedules M PSSCHs based on the first information sent by the first terminal 101, where M is an integer greater than or equal to 1.

[0283] The communication method involved in the embodiments of the present disclosure may include at least one of steps S2101 and S2102. For example, step S2101 may be implemented as an independent embodiment, step S2102 may be implemented as an independent embodiment, steps 1+3 may be implemented as independent embodiments, and steps S2101+step S2102 may be implemented as independent embodiments, but the present disclosure is not limited thereto.

[0284] In some embodiments, step S2101 and step S2102 may be executed in an interchanged order or simultaneously.

[0285] In some embodiments, step S2101 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0286] In some embodiments, step S2102 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0287] In some embodiments, reference may be made to other optional implementations described before or after the description corresponding to FIG. 2A , FIG. 2B , and FIG. 2C .

[0288] FIG3 is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG3 , the embodiment of the present disclosure relates to a communication method, which includes:

[0289] Step S3101: Send first information to the second terminal 102.

[0290] In some embodiments, the first information is used to schedule M physical sidelink shared channels PSSCH;

[0291] Wherein, M is an integer greater than or equal to 1, and the first information includes first-stage sidelink control information SCI and second-stage SCI.

[0292] The optional implementation of step S3101 can refer to the optional implementation of step S2101 in Figure 2A and other related parts in the embodiments involved in Figures 2B and 2C, which will not be repeated here.

[0293] In some embodiments, the first-stage SCI and the second-stage SCI are carried in the first time slot, where the first time slot is the time slot where the first PSSCH among the M PSSCHs is located; the first information includes the first-stage SCI corresponding to the M PSSCHs and the second-stage SCI corresponding to the M PSSCHs, wherein the number of the first-stage SCIs is 1 and the number of the second-stage SCIs is 1.

[0294] In some embodiments, the first-stage SCI is carried in the first time slot, and the second-stage SCI is carried in the time slots where M PSSCHs are located, respectively. The first time slot is the time slot where the first PSSCH among the M PSSCHs is located, wherein the number of first-stage SCIs is 1 and the number of second-stage SCIs is M.

[0295] In some embodiments, the first information is sent based on a first resource, wherein the first resource occurs based on a first period, and the first period is based on one or more of the following configurations, including: a resource pool, a partial bandwidth BWP, or a carrier.

[0296] In some embodiments, the information fields in the second-stage SCI include one or more of the following:

[0297] A first hybrid automatic repeat request process identifier HARQ process ID, the information field length of the first HARQ process ID is 5 bits, and the first HARQ process ID indicates the HARQ process number of the first PSSCH among the M PSSCHs scheduled by the first information; a first redundancy version Rv, the information field length of the first redundancy version is M bits, and each bit value indicates the redundant version value of one PSSCH among the M PSSCHs scheduled by the first information, and M is an integer greater than 1; a first new data indication NDI, the information field length of the first new data indication is M bits, and each bit value indicates the new data indication of one PSSCH among the M PSSCHs scheduled by the first information; a first destination identifier Destination ID, the information field of the first destination identifier indicates M destination identifiers, and the information field length of the first destination identifier is Q bits, wherein the value of Q is 16 times M, and each 16-bit bit value indicates the destination terminal of one PSSCH among the M PSSCHs scheduled by the first information; whether the first HARQ feedback is enabled or disabled, the information field length of the first HARQ feedback is M bits, and each bit value indicates the state of enabling or disabling the HARQ feedback of one PSSCH among the M PSSCHs scheduled by the first information; service type, the information field length of the service type is 2 bits; channel state information CSI request, the information field length of the CSI request is 1 bit; first source identifier, the information field length of the first source identifier is 8 bits; area identifier, the information field length of the area identifier is 12 bits; communication distance requirement, the information field length of the communication distance requirement is 4 bits.

[0298] In some embodiments, the information field in the second stage SCI includes one or more of the following: a second new data indication, the information field length of the second new data indication is 1 bit; a second redundant version, the information field length of the second redundant version is 2 bits; a second HARQ process identifier, the information field length of the second HARQ process identifier is 4 bits; a second destination identifier, the information field length of the second destination identifier is 16 bits; enabling or disabling of the second HARQ feedback, the corresponding information field length of enabling or disabling the second HARQ feedback is 1 bit; a service type, the information field length of the service type is 2 bits; a channel state information CSI request, the information field length of the CSI request is 1 bit; an area identifier, the information field length of the area identifier is 12 bits; a second source identifier, the information field length of the second source identifier is 8 bits; a communication distance requirement, the information field length of the communication distance requirement is 4 bits.

[0299] In some embodiments, the information field in the first-stage SCI includes one or more of the following: priority value, the information field length of the priority value is 3 times M bits, and each 3-bit bit value indicates the priority value of 1 PSSCH among the M PSSCHs scheduled by the first information; modulation and coding MCS scheme, the information field length of the MCS scheme is 5 bits; resource reservation period, the information field length of the reserved resource period is O bits, where O is the logarithm of P with base 2, and P is the number of resource periods; demodulation reference signal DMRS structure; the format of the second-stage SCI, the information field length of the format of the second-stage SCI is 2 bits; the first offset indication value; the number of DMRS ports; the overhead of the physical side chain feedback channel; the first time domain resources; the first frequency domain resources and the number M of PSSCHs scheduled by the first information.

[0300] In some embodiments, the first time domain resource is used to indicate at least one of the following: time domain resources of M consecutive PSSCHs; N reserved time domain resources corresponding to the M PSSCH time domain resources, where N is an integer.

[0301] In some embodiments, the first time domain resource carried by the first-stage SCI is indicated by way of a time domain resource indication TRIV.

[0302] In some embodiments, TRIV is used to indicate a first time domain position; the first time domain position is the time domain position of the first PSSCH in the M PSSCHs reserved each time in the N reserved time domain resources.

[0303] In some embodiments, the time domain position of the first PSSCH among the M consecutive PSSCHs scheduled this time is the second time domain position, and the second time domain position is obtained based on blind detection; the first time domain position is obtained based on the second time domain position and the offset, and the offset is the offset between the second time domain position and the first time domain position.

[0304] In some embodiments, the first frequency domain resource is used to indicate at least one of the following: the frequency domain resources of the M PSSCHs scheduled this time, the frequency domain starting positions of the M PSSCH frequency domain resources are the same, and the number of frequency domain resources is the same; the N reserved frequency domain resources corresponding to the M PSSCH frequency domain resources, where N is an integer, and the frequency domain starting positions of the M PSSCH frequency domain resources in each reserved frequency domain resource in the N reserved frequency domain resources are different, and the number of frequency domain resources is the same.

[0305] In some embodiments, the first frequency domain resource in the first stage SCI is indicated by means of a frequency domain resource FRIV.

[0306] In some embodiments, FRIV is used to indicate at least one of the following: the number of frequency domain resources, and the first frequency domain starting position; wherein the first frequency domain starting position is the frequency domain position of the first PSSCH in the M PSSCHs reserved each time in the N reserved frequency domain resources.

[0307] In some embodiments, the frequency domain position of the first PSSCH among the M consecutive PSSCHs scheduled this time is the second frequency domain position, and the second frequency domain position is obtained based on blind detection; the first frequency domain position is obtained based on the second time domain position and the offset, and the offset is the offset between the first frequency domain position and the second frequency domain position.

[0308] FIG4 is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG4 , the embodiment of the present disclosure relates to a communication method, which includes:

[0309] Step S4101, obtain first information.

[0310] The optional implementation of step S4101 can refer to the optional implementation of step S2102 in Figure 2A and other related parts in the embodiments involved in Figures 2B and 2C, which will not be repeated here.

[0311] Step S4102: Schedule M PSSCHs based on the first information.

[0312] The optional implementation of step S4102 can refer to the optional implementation of step S2102 in Figure 2A and other related parts in the embodiments involved in Figures 2B and 2C, which will not be repeated here.

[0313] In some embodiments, the first information is used to schedule M physical sidelink shared channels PSSCH;

[0314] Wherein, M is an integer greater than or equal to 1, and the first information includes first-stage sidelink control information SCI and second-stage SCI.

[0315] The optional implementation of step S3101 can refer to the optional implementation of step S2101 in Figure 2A and other related parts in the embodiments involved in Figures 2B and 2C, which will not be repeated here.

[0316] In some embodiments, the first-stage SCI and the second-stage SCI are carried in the first time slot, where the first time slot is the time slot where the first PSSCH among the M PSSCHs is located; the first information includes the first-stage SCI corresponding to the M PSSCHs and the second-stage SCI corresponding to the M PSSCHs, wherein the number of the first-stage SCIs is 1 and the number of the second-stage SCIs is 1.

[0317] In some embodiments, the first-stage SCI is carried in the first time slot, and the second-stage SCI is carried in the time slots where M PSSCHs are located, respectively. The first time slot is the time slot where the first PSSCH among the M PSSCHs is located, wherein the number of first-stage SCIs is 1 and the number of second-stage SCIs is M.

[0318] In some embodiments, the first information is sent based on a first resource, wherein the first resource occurs based on a first period, and the first period is based on one or more of the following configurations, including: a resource pool, a partial bandwidth BWP, or a carrier.

[0319] In some embodiments, the information fields in the second-stage SCI include one or more of the following:

[0320] A first hybrid automatic repeat request process identifier HARQ process ID, the information field length of the first HARQ process ID is 5 bits, and the first HARQ process ID indicates the HARQ process number of the first PSSCH among the M PSSCHs scheduled by the first information; a first redundancy version Rv, the information field length of the first redundancy version is M bits, and each bit value indicates the redundant version value of one PSSCH among the M PSSCHs scheduled by the first information, and M is an integer greater than 1; a first new data indication NDI, the information field length of the first new data indication is M bits, and each bit value indicates the new data indication of one PSSCH among the M PSSCHs scheduled by the first information; a first destination identifier Destination ID, the information field of the first destination identifier indicates M destination identifiers, and the information field length of the first destination identifier is Q bits, wherein the value of Q is 16 times M, and each 16-bit bit value indicates the destination terminal of one PSSCH among the M PSSCHs scheduled by the first information; whether the first HARQ feedback is enabled or disabled, the information field length of the first HARQ feedback is M bits, and each bit value indicates the state of enabling or disabling the HARQ feedback of one PSSCH among the M PSSCHs scheduled by the first information; service type, the information field length of the service type is 2 bits; channel state information CSI request, the information field length of the CSI request is 1 bit; first source identifier, the information field length of the first source identifier is 8 bits; area identifier, the information field length of the area identifier is 12 bits; communication distance requirement, the information field length of the communication distance requirement is 4 bits.

[0321] In some embodiments, the information field in the second stage SCI includes one or more of the following: a second new data indication, the information field length of the second new data indication is 1 bit; a second redundant version, the information field length of the second redundant version is 2 bits; a second HARQ process identifier, the information field length of the second HARQ process identifier is 4 bits; a second destination identifier, the information field length of the second destination identifier is 16 bits; enabling or disabling of the second HARQ feedback, the corresponding information field length of enabling or disabling the second HARQ feedback is 1 bit; a service type, the information field length of the service type is 2 bits; a channel state information CSI request, the information field length of the CSI request is 1 bit; an area identifier, the information field length of the area identifier is 12 bits; a second source identifier, the information field length of the second source identifier is 8 bits; a communication distance requirement, the information field length of the communication distance requirement is 4 bits.

[0322] In some embodiments, the information field in the first-stage SCI includes one or more of the following: priority value, the information field length of the priority value is 3 times M bits, and each 3-bit bit value indicates the priority value of 1 PSSCH among the M PSSCHs scheduled by the first information; modulation and coding MCS scheme, the information field length of the MCS scheme is 5 bits; resource reservation period, the information field length of the reserved resource period is O bits, where O is the logarithm of P with base 2, and P is the number of resource periods; demodulation reference signal DMRS structure; the format of the second-stage SCI, the information field length of the format of the second-stage SCI is 2 bits; the first offset indication value; the number of DMRS ports; the overhead of the physical side chain feedback channel; the first time domain resources; the first frequency domain resources and the number M of PSSCHs scheduled by the first information.

[0323] In some embodiments, the first time domain resource is used to indicate at least one of the following: time domain resources of M consecutive PSSCHs; N reserved time domain resources corresponding to the M PSSCH time domain resources, where N is an integer.

[0324] In some embodiments, the first time domain resource carried by the first-stage SCI is indicated by way of a time domain resource indication TRIV.

[0325] In some embodiments, TRIV is used to indicate a first time domain position; the first time domain position is the time domain position of the first PSSCH in the M PSSCHs reserved each time in the N reserved time domain resources.

[0326] In some embodiments, the time domain position of the first PSSCH among the M consecutive PSSCHs scheduled this time is the second time domain position, and the second time domain position is obtained based on blind detection; the first time domain position is obtained based on the second time domain position and the offset, and the offset is the offset between the second time domain position and the first time domain position.

[0327] In some embodiments, the first frequency domain resource is used to indicate at least one of the following: the frequency domain resources of the M PSSCHs scheduled this time, the frequency domain starting positions of the M PSSCH frequency domain resources are the same, and the number of frequency domain resources is the same; the N reserved frequency domain resources corresponding to the M PSSCH frequency domain resources, where N is an integer, and the frequency domain starting positions of the M PSSCH frequency domain resources in each reserved frequency domain resource in the N reserved frequency domain resources are different, and the number of frequency domain resources is the same.

[0328] In some embodiments, the first frequency domain resource in the first stage SCI is indicated by means of a frequency domain resource FRIV.

[0329] In some embodiments, FRIV is used to indicate at least one of the following: the number of frequency domain resources, and the first frequency domain starting position; wherein the first frequency domain starting position is the frequency domain position of the first PSSCH in the M PSSCHs reserved each time in the N reserved frequency domain resources.

[0330] In some embodiments, the frequency domain position of the first PSSCH among the M consecutive PSSCHs scheduled this time is the second frequency domain position, and the second frequency domain position is obtained based on blind detection; the first frequency domain position is obtained based on the second time domain position and the offset, and the offset is the offset between the first frequency domain position and the second frequency domain position.

[0331] This embodiment also provides a communication method for realizing how to indicate control information corresponding to multiple PSSCHs in the SCI.

[0332] In some embodiments, based on the first information, notification information corresponding to M PSSCHs is indicated in the SCI, where M is an integer greater than or equal to 1.

[0333] In some embodiments, the first information includes a first-stage SCI and a second-stage SCI.

[0334] In some embodiments, a design scheme for the first information is: the first-stage SCI and the second-stage SCI are carried only in the time slot where the first PSSCH of the scheduled M PSSSCHs is located.

[0335] In some embodiments, the time slots in which the second to Mth PSSCHs are scheduled only carry data.

[0336] In some embodiments, the resources of the PSCCH are periodic.

[0337] In some embodiments, the periodicity value of the PSCCH is based on the resource pool configuration.

[0338] In some embodiments, the second-stage SCI includes at least one of the following information field items:

[0339] HARQ process identifier (ID), redundancy version, new data indication, destination ID, HARQ feedback enable / disable, source ID, service type (cast type indicator), CSI request (request), zone ID, communication range requirement, etc.

[0340] In some embodiments, the HARQ process identifier, which is an information field with a length of 5 bits, indicates the HARQ process number of the first PSSCH among M PSSCHs scheduled by 1 SCI.

[0341] In some embodiments, the HARQ process identifier, the HARQ process number of the scheduled 2nd to M-1th PSSCHs is determined in an implicit manner, that is, the HARQ process number of the indicated first PSSCH is increased by 1.

[0342] In some embodiments, the redundant version, information field bit length is M, an integer where M>1, and each bit value corresponds to the RV value of one PSSCH scheduled by the SCI.

[0343] In some embodiments, the method for indicating the redundancy version includes at least one of the following:

[0344] -A) The lowest bit of the bit value corresponds to the RV value of the first PSSCH among the M scheduled PSSCHs.

[0345] -B) The highest bit of the bit value corresponds to the RV value of the first PSSCH among the M scheduled PSSCHs.

[0346] In some embodiments, the bit length of the information field indicated by the new data is M, an integer where M>1, and each bit value corresponds to the NDI value of one PSSCH scheduled by the SCI.

[0347] In some embodiments, the method for indicating the new data indication includes at least one of the following:

[0348] -A) The lowest bit of the bit value corresponds to the NDI value of the first PSSCH among the M scheduled PSSCHs.

[0349] -B) The highest bit of the bit value corresponds to the NDI value of the first PSSCH among the M scheduled PSSCHs.

[0350] For example, if 1 SCI schedules 4 PSSCHs, the bit value is 1110, and according to -A), the lowest bit of the bit value is 0, it indicates that the NDI value of the first PSSCH among M PSSCHs is 0, that is, the transmission is a retransmission.

[0351] In some embodiments, the information field corresponding to the destination ID indicates M destination IDs, the bit length is 16×M, each 16 bits corresponds to the destination UE of 1 PSSCH scheduled by SCI, and 16×M indicates the destination UEs corresponding to M PSSCHs scheduled by SCI.

[0352] Optionally, M=1, then the M PSSCHs scheduled by the SCI are sent to the same destination UE.

[0353] In some embodiments, the information field bit length corresponding to the HARQ feedback enable or disable ID is M, and each bit value corresponds to the state of the HARQ feedback of one PSSCH scheduled by the SCI.

[0354] Exemplarily, the method for enabling or disabling indication of HARQ feedback includes at least one of the following:

[0355] -A) The lowest bit of the bit value corresponds to the status value of the HARQ feedback of the first PSSCH among the M PSSCHs scheduled by sci.

[0356] -B) The highest bit of the bit value corresponds to the status value of the HARQ feedback of the first PSSCH among the M PSSCHs scheduled by sci.

[0357] For example, 1 SCI schedules 4 PSSCHs, the bit value is 1110, and according to -A), the lowest bit of the bit value is 0, which indicates that the HARQ feedback status of the first PSSCH among M PSSCHs is disabled, that is, the PSSCH does not support HARQ feedback.

[0358] In some embodiments, the information field corresponding to the source ID is 8 bits long, the information field corresponding to the service type is 2 bits, the information field corresponding to the CSI request is 1 bit, the information field corresponding to the area ID is 12 bits, and the information field corresponding to the communication distance requirement is one or more information fields in 4 bits.

[0359] In some embodiments, the first-stage SCI includes at least one of the following, and these information fields have the same value for the M scheduled PSSCHs:

[0360] Priority value, modulation and coding scheme MCS, resource reservation period, DMRS structure, beta offset indicator value, number of DMRS ports, PSFCH overhead, time domain resource indicator, and frequency domain resource indicator.

[0361] In some embodiments, the bit length of the information field corresponding to the priority value is 3 times M, and each 3-bit value corresponds to the priority value of 1 PSSCH scheduled by the SCI.

[0362] Exemplarily, a method for indicating a priority value includes at least one of the following:

[0363] -A) The lowest 3 bits correspond to the priority value of the first PSSCH among the M scheduled PSSCHs.

[0364] -B) The highest 3-bit value corresponds to the priority value of the first PSSCH among the M scheduled PSSCHs.

[0365] For example, 1 SCI schedules 4 PSSCHs, the bit value is 111010011, and according to option 1, the lowest bit of the bit value is 011, indicating that the priority value of the first PSSCH among M PSSCHs is 3.

[0366] In some embodiments, the field length corresponding to the information field of SCI1-A includes:

[0367] The information field length corresponding to the priority is 3 bits, the information field length corresponding to the structural format of the second-stage SCI is 2 bits, the information field length corresponding to the beta offset indication is 2 bits, the information field length corresponding to the DMRS port is 1 bit, the information field length corresponding to the MCS is 5 bits, and the information field length corresponding to the indication of the additional MCS table is any of the following: 0 bits, 1 bit or 2 bits.

[0368] In some embodiments, the length O of the information field corresponding to the resource reservation period is calculated based on the following formula: O=log2N rsv_period

[0369] Among them, N rsv_period Indicates the number of supported reservation periods.

[0370] In some embodiments, the information field length K corresponding to the DMRS structure is calculated based on the following formula: K=log2N pattern

[0371] Among them, N pattern Indicates the number of supported DMRS structures.

[0372] In some embodiments, the field corresponding to the time domain resource indication may simultaneously indicate the time domain resources of the M PSSCHs transmitted this time and the time domain resources of the M PSSCHs reserved once or twice.

[0373] In some embodiments, frequency domain resource indication: This information field may simultaneously indicate the frequency domain resources of the M PSSCHs transmitted this time and the frequency domain resources of the M PSSCHs reserved for 1 or 2 times.

[0374] In some embodiments, the design of the time domain resource indication includes at least one of the following:

[0375] -A) One SCI schedules the transmission of M discontinuous PSSCHs, and one SCI indicates at most two reserved resources.

[0376] -B) One SCI schedules M consecutive PSSCH transmissions, and one SCI indicates at most two reserved resources.

[0377] In some embodiments, Design A for time domain resource indication includes at least one of the following:

[0378] 1 SCI indicates M TRIVs and M-1 offset values ​​simultaneously;

[0379] Each TRIV indicates the resources of the scheduled PSCH for this transmission and the location of the reserved resources for one or two times. M TRIVs respectively indicate the resources of the scheduled PSCH for this transmission and the locations of the reserved resources for one or two times for one SCI.

[0380] The bit values ​​indicate the current transmission resources and the reserved 1st or 2nd resources of M PSSCHs in order from high to low.

[0381] For example, if the TRIV with the highest bit is the first TRIV, it indicates the resources for the current transmission of the first PSSCH (the PSSCH at the front in the time domain) among the scheduled M PSSCHs and the position of the reserved 1st or 2nd resources.

[0382] Alternatively, the TRIV with the lowest bit is the first TRIV, indicating the resources of the first PSSCH (the PSSCH at the front of the time domain) in the scheduled M PSSCHs and the location of the reserved 1st or 2nd resources.

[0383] The M-1 offset values ​​respectively indicate the time slot offset value of the first PSSCH resource indicated in the 2nd TRIV to the Mth TRIV (i.e., the resource of this transmission) relative to the first PSSCH resource indicated by the first TRIV. Each offset value is log 2(a) bits, where 1≤a<32.

[0384] In some embodiments, the time domain position of the first PSCH resource indicated by the first TRIV (ie, the resource of this transmission) is obtained by blind detection SCI

[0385] The starting position of every M PSSCHs reserved once or twice, the starting position of the scheduled M consecutive PSSCHs for the reserved M consecutive resources once or twice, the scheduling of M consecutive resources, using TRIV to indicate the current scheduling (that is, the time slot position of the first PSSCH in the scheduled M PSSCHs) in this information field.

[0386] In some embodiments, Design B for time domain resource indication includes at least one of the following:

[0387] 1 SCI indicates 1 TRIV and the number of consecutive PSSCHs scheduled by SCI M;

[0388] 1 TRIV indicates the time domain position of the first PSSCH in the M consecutive PSSCHs of this transmission scheduled by SCI and the time domain position of the first PSSCH in the M consecutive PSSCHs reserved for 1 or 2 times;

[0389] Design of 1 TRIV: The time domain starting position of the first PSSCH in the M consecutive PSSCHs transmitted this time is obtained through blind detection SCI. If M consecutive PSSCH resources are reserved for 1 time, TRIV indicates the offset value of the time domain starting position of the first PSSCH in the reserved 1st consecutive M PSSCHs relative to the time domain starting position of the first PSSCH in the M consecutive PSSCHs transmitted this time. If M consecutive PSSCH resources are reserved for 2 times, TRIV indicates the offset value of the time domain starting position of the first PSSCH in the reserved 2nd consecutive M PSSCHs (the starting position is the slot position) relative to the time domain position of the first PSSCH in the M consecutive PSSCHs transmitted this time.

[0390] Design of the number M of consecutive PSSCHs scheduled by SCI: the bit length is log 2(M).

[0391] In some embodiments, the design of the frequency domain resource indication includes at least one of the following:

[0392] -A) The frequency domain resources of the M PSSCHs scheduled by one SCI are the same.

[0393] -B) The frequency domain resources of the M PSSCHs scheduled by one SCI are different, that is, the starting positions of the frequency domain resources of the scheduled M PSSCHs are different, but the number of used resources is the same.

[0394] The following will respectively describe the designs of -A) and -B) two types of frequency domain resource indication:

[0395] For -A):

[0396] In some embodiments, the frequency domain resources of the M PSSCHs scheduled by one SCI are the same (i.e., the frequency domain starting position and the number of frequency domain resources used (such as the same number of subchannels)). For one PSSCH, the starting position of the frequency domain resources reserved for one or two times and the resources transmitted this time may be different, but the number of frequency domain resources (the number of subchannels) is the same, and resource reservation supports up to two reservations.

[0397] In some embodiments, one FRIV is used in one SCI to indicate the frequency domain resources of the M PSSCHs transmitted this time and the frequency domain resources of one or two consecutive M PSSCHs reserved. The FRIV is designed as follows:

[0398] When resources are reserved once, FRIV indicates the number of resources used in the frequency domain and the starting position of the reserved resources once. The number of resources used is the same for this transmission and the number of frequency domain resources for the reserved resources once. The starting position of the frequency domain for this transmission is determined through blind detection.

[0399] When resources are reserved twice, FRIV indicates the number of resources used in the frequency domain and the starting positions of the reserved resources once and twice. The number of resources used is the same for this transmission and the number of frequency domain resources reserved once and twice. The starting position of the frequency domain for this transmission is determined through blind detection.

[0400] For -B):

[0401] In some embodiments, for one PSSCH, the starting positions of its reserved resources and the frequency domain resources of this transmission may be different, but the number of frequency domain resources (ie, the number of subchannels) is the same.

[0402] In some embodiments, the frequency domain resource indication is used to indicate the value of FRIV and M-1 offset values.

[0403] In some embodiments, one FRIV indicates the frequency domain resources (e.g., the number of subchannels used) of the first PSSCH (i.e., the PSSCH that is the first in the time domain among the M PSSCHs) of the current scheduling and the frequency domain resources of the first PSSCH among the frequency domain resources of the M PSSCHs reserved for one or two times. The frequency domain resources of the first PSSCH are also the starting resources (e.g., the subchannel sequence number) and the number of resources (the number of subchannels used) of the first PSSCH.

[0404] Optionally, when one FRIV indicates the frequency domain resources of the first PSSCH in the M PSSCHs scheduled this time and the frequency domain resources of the first PSSCH in the frequency domain resources of the M PSSCHs reserved once or twice, the FRIV reuses the frequency domain resource indication method of the current sidelink, including:

[0405] The frequency domain resources of the first PSSCH in the frequency domain resources of the first M PSSCHs reserved may be the starting subchannel number of the first PSSCH and / or the number of subchannels used. The frequency domain resources of the first PSSCH in the frequency domain resources of the second M PSSCHs reserved may be the starting subchannel number of the first PSSCH and / or the number of subchannels used.

[0406] In some embodiments, for M-1 offset values, the bit length q of each offset value is calculated based on the following formula, including: q = log(X)

[0407] Here, X refers to the number of sub-channels contained in the resource pool.

[0408] In some embodiments, each offset value indicates the subchannel offset value of the frequency domain starting position of the 2nd to Mth PSSCHs in the M PSSCHs scheduled each time by the SCI relative to the frequency domain starting position of the 1st PSSCH, and the value is the same for the M PSSCHs transmitted this time or the M PSSCHs reserved for the 1st or 2nd time.

[0409] In some embodiments, the frequency domain starting position of the first PSSCH in the M PSSCHs scheduled by the SCI each time is determined by blind detection.

[0410] In some embodiments, continuing with the embodiment shown in Figure 2B, 1 SCI indicates 1 FRIV, 1 SCI schedules 4 different PSSCHs, the first stage SCI and the second stage SCI of the 4 PSSCHs are carried in the time slot where the first PSSCH is located, and the control information located in slot 0 will indicate the starting position and subchannel number of the frequency domain resources where the first PSSCH of the 4 PSSCHs reserved for the first time (that is, the PSSCH located in slot 9) is located, and will indicate the starting position and subchannel number of the frequency domain resources where the first PSSCH of the 4 pSSCHs reserved for the second time (that is, the PSSCH located in slot 24) is located.

[0411] It can be understood that, among the 4 PSSCHs transmitted this time (i.e., PSSCHs located in slot 0, slot 1, slot 2, and slot 3), the starting position of the frequency domain resources of the PSSCH located in slot 0 is determined by blind detection, and the frequency domain starting position of the PSSCH located in slot 1 can be determined according to the indicated offset 1 (relative to the starting position of the frequency domain resources of the PSSCH in slot 0), the frequency domain starting position of the PSSCH located in slot 1 can be determined according to the indicated offset 2, and the frequency domain starting position of the PSSCH located in slot 2 can be determined according to the indicated offset 3.

[0412] In some embodiments, the second design scheme of the first information is: the scheduled M PSSCHs correspond to only one new first-stage SCI, and the new first-stage SCI is carried in the time slot where the first PSSCH among the M PSSCHs is located. Each PSSCH corresponds to one second-stage SCI, and is carried in the time slot where the respective PSSCHs are located. At this time, the information field and bit value in the second-stage SCI reuse the values ​​specified by the second-stage SCI in the existing R16sidelink, and the design of the control information of the new first-stage SCI carrying M PSSCHs is the same as scheme one.

[0413] In some embodiments, the PSCCH resources appear periodically, and the period value of the PSCCH is based on the resource pool configuration.

[0414] In some embodiments, as shown in the embodiment of Figure 2C, one SCI schedules three different PSSCHs. The three PSSCHs scheduled by the SCI for this transmission are located in slots 0, 1, and 2, respectively. The new first-stage SCI carries the first-stage control information of these three PSSCHs and is only located in slot 0. The second-stage SCI corresponding to the second PSSCH is located in slot 1 where PSSCH 2 is located, and the second-stage SCI corresponding to the third PSSCH is located in slot 3 where PSSCH3 is located.

[0415] Through the solution mentioned in the embodiment of the present disclosure, it is possible to determine how to indicate control information corresponding to multiple PSSCHs in the SCI.

[0416] In the embodiments of the present disclosure, some or all of the steps and their optional implementations may be arbitrarily combined with some or all of the steps in other embodiments, or may be arbitrarily combined with the optional implementations of other embodiments.

[0417] The embodiments of the present disclosure further provide an apparatus for implementing any of the above methods. For example, an apparatus is provided, comprising units or modules for implementing each step performed by a terminal in any of the above methods. For another example, another apparatus is provided, comprising units or modules for implementing each step performed by a network device (e.g., an access network device, a core network function node, a core network device, etc.) in any of the above methods.

[0418] It should be understood that the division of the various units or modules in the above device is merely a division of logical functions. In actual implementation, they may be fully or partially integrated into a physical entity, or they may be physically separated. In addition, the units or modules in the device may be implemented in the form of a processor calling software: for example, the device includes a processor, the processor is connected to a memory, and the memory stores instructions. The processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the various units or modules of the above device, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory within the device or a memory outside the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits, and the functions of some or all of the units or modules can be realized by designing the hardware circuits. The above-mentioned hardware circuits can be understood as one or more processors; for example, in one implementation, the above-mentioned hardware circuit is an application-specific integrated circuit (ASIC), which realizes the functions of some or all of the above units or modules by designing the logical relationship of the components in the circuit; for example, in another implementation, the above-mentioned hardware circuit can be realized by a programmable logic device (PLD). Taking a field programmable gate array (FPGA) as an example, it can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured by configuring the configuration file, thereby realizing the functions of some or all of the above units or modules. All units or modules of the above devices can be realized in the form of software called by the processor, or in the form of hardware circuits, or in part by the form of software called by the processor, and the rest by hardware circuits.

[0419] In the embodiments of the present disclosure, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction reading and execution capabilities, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP). In another implementation, the processor can implement certain functions through the logical relationship of the hardware circuit. The logical relationship of the above-mentioned hardware circuit is fixed or reconfigurable. For example, the processor is a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document and implementing the hardware circuit configuration can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. In addition, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DPU), etc.

[0420] Figure 5A is a schematic diagram of the structure of the first terminal proposed in an embodiment of the present disclosure. As shown in Figure 5A, the first terminal 5100 may include: a transceiver module 5101. In some embodiments, the above-mentioned transceiver module 5101 is used to send first information to the second terminal, and the first information is used to schedule M physical side link shared channels PSSCH; wherein M is an integer greater than 1, and the first information includes the first stage side link control information SCI and the second stage SCI. Optionally, the above-mentioned transceiver module is used to perform at least one of the communication steps such as sending and / or receiving (for example, step S2101) performed by the first terminal 101 in any of the above methods, which will not be repeated here.

[0421] Figure 5B is a schematic diagram of the structure of the second terminal proposed in an embodiment of the present disclosure. As shown in Figure 5B, the second terminal 5200 may include: a transceiver module 5201 and a processing module 5202. In some embodiments, the transceiver module 5201 is used to obtain the first information sent by the first terminal. Optionally, the transceiver module is used to perform at least one of the communication steps such as sending and / or receiving (for example, step S2102) performed by the second terminal 102 in any of the above methods, which will not be repeated here. The processing module 5202 is used to schedule M physical side link shared channels PSSCH based on the first information; wherein, M is an integer greater than 1, and the first information includes the first stage side link control information SCI and the second stage SCI. Optionally, the processing module is used to perform at least one of the communication steps such as data processing (for example, step S2103) performed by the second terminal 102 in any of the above methods, which will not be repeated here.

[0422] Figure 6A is a schematic diagram of the structure of a communication device 6100 proposed in an embodiment of the present disclosure. Communication device 6100 can be a network device (e.g., an access network device, a core network device, etc.), a terminal (e.g., a user equipment, etc.), a chip, a chip system, or a processor that supports a network device to implement any of the above methods, or a chip, a chip system, or a processor that supports a terminal to implement any of the above methods. Communication device 6100 can be used to implement the methods described in the above method embodiments. For details, please refer to the description of the above method embodiments.

[0423] As shown in Figure 6A, the communication device 6100 includes one or more processors 6101. The processor 6101 can be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit. The baseband processor can be used to process the communication protocol and communication data, and the central processing unit can 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 programs, and process program data. Optionally, the communication device 6100 is used to perform any of the above methods. Optionally, one or more processors 6101 are used to call instructions to enable the communication device 6100 to perform any of the above methods.

[0424] In some embodiments, the communication device 6100 further includes one or more transceivers 6102. When the communication device 6100 includes one or more transceivers 6102, the transceiver 6102 performs at least one of the communication steps such as sending and / or receiving in the above method (e.g., step S2101 and step S2102, but not limited thereto), and the processor 6101 performs at least one of the other steps (e.g., step S2103, but not limited thereto). In an optional embodiment, the transceiver may include a receiver and / or a transmitter, and the receiver and transmitter may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, transceiver circuit, interface circuit, and interface may be interchangeable, the terms transmitter, transmitting unit, transmitter, and transmitting circuit may be interchangeable, and the terms receiver, receiving unit, receiver, and receiving circuit may be interchangeable.

[0425] In some embodiments, the communication device 6100 further includes one or more memories 6103 for storing data. Alternatively, all or part of the memories 6103 may be located outside the communication device 6100. In alternative embodiments, the communication device 6100 may include one or more interface circuits 6104. Optionally, the interface circuits 6104 are connected to the memories 6103 and may be configured to receive data from the memories 6103 or other devices, or to send data to the memories 6103 or other devices. For example, the interface circuits 6104 may read data stored in the memories 6103 and send the data to the processor 6101.

[0426] The communication device 6100 described in the above embodiment may be a network device or a terminal, but the scope of the communication device 6100 described in the present disclosure is not limited thereto, and the structure of the communication device 6100 may not be limited to FIG6A. The communication device may be an independent device or may be part of a larger device. For example, the communication device may be: 1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data and programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, an in-vehicle device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.

[0427] 6B is a schematic diagram of the structure of a chip 6200 according to an embodiment of the present disclosure. If the communication device 6100 can be a chip or a chip system, reference can be made to the schematic diagram of the structure of the chip 6200 shown in FIG6B , but the present disclosure is not limited thereto.

[0428] The chip 6200 includes one or more processors 6201. The chip 6200 is configured to execute any of the above methods.

[0429] In some embodiments, chip 6200 further includes one or more interface circuits 6202. Terms such as interface circuit, interface, and transceiver pins may be used interchangeably. In some embodiments, chip 6200 further includes one or more memories 6203 for storing data. Alternatively, all or part of memory 6203 may be located external to chip 6200. Optionally, interface circuit 6202 is connected to memory 6203 and may be used to receive data from memory 6203 or other devices, or may be used to send data to memory 6203 or other devices. For example, interface circuit 6202 may read data stored in memory 6203 and send the data to processor 6201.

[0430] In some embodiments, the interface circuit 6202 performs at least one of the communication steps (e.g., step S2101 and step S2102, but not limited thereto) of the aforementioned method. The interface circuit 6202 performing the communication steps (e.g., step S2101 and step S2102, but not limited thereto) of the aforementioned method means, for example, that the interface circuit 6202 performs data exchange between the processor 6201, chip 6200, memory 6203, or a transceiver device. In some embodiments, the processor 6201 performs at least one of the other steps (e.g., step S2103, but not limited thereto).

[0431] The modules and / or devices described in various embodiments, such as virtual devices, physical devices, and chips, can be arbitrarily combined or separated according to circumstances. Optionally, some or all steps can also be performed collaboratively by multiple modules and / or devices, which is not limited here.

[0432] The present disclosure also proposes a storage medium having instructions stored thereon. When the instructions are executed on the communication device 6100, the communication device 6100 executes any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but is not limited thereto and may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but is not limited thereto and may also be a transient storage medium.

[0433] The present disclosure also provides a program product, which, when executed by the communication device 6100, enables the communication device 6100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0434] The present disclosure also proposes a computer program, which, when executed on a computer, causes the computer to perform any one of the above methods.

Claims

1. A communication method, characterized in that: The method comprises: The first terminal sends first information to the second terminal, where the first information is used to schedule M physical sidelink shared channels PSSCH; Wherein, M is an integer greater than or equal to 1, and the first information includes first-stage side link control information SCI and second-stage SCI.

2. The method according to claim 1, characterized in that The first-stage SCI and the second-stage SCI are carried in a first time slot, where the first time slot is a time slot where a first PSSCH among the M PSSCHs is located; The first information includes the first-stage SCI corresponding to the M PSSCHs and the second-stage SCI corresponding to the M PSSCHs, wherein the number of the first-stage SCIs is 1, and the number of the second-stage SCIs is 1.

3. The method according to claim 1, characterized in that The first stage SCI is carried in the first time slot, and the second stage SCI is carried in the time slots where M PSSCHs are located. The first time slot is the time slot where the first PSSCH among the M PSSCHs is located, wherein the number of SCIs in the first stage is 1, and the number of SCIs in the second stage is M.

4. The method according to any one of claims 1 to 3, characterized in that The first information is sent based on a first resource, wherein the first resource appears based on a first period, The first cycle is based on one or more of the following configurations, including: Resource pool, bandwidth portion BWP, or carrier.

5. The method according to claim 1, characterized in that The information fields in the second-stage SCI include one or more of the following: A first hybrid automatic repeat request process identifier HARQ process ID, where the information field length of the first HARQ process ID is 5 bits, and the first HARQ process ID indicates the HARQ process number of the first PSSCH among the M PSSCHs scheduled by the first information; A first redundancy version RV, wherein the information field length of the first redundancy version is M bits, and each bit value indicates a redundancy version value of one PSSCH among M PSSCHs scheduled by the first information, where M is an integer greater than 1; A first new data indication NDI, wherein the information field length of the first new data indication is M bits, and each bit value indicates a new data indication of one PSSCH among the M PSSCHs scheduled by the first information; A first destination identifier Destination ID, wherein the information field of the first destination identifier indicates M destination identifiers, and the information field length of the first destination identifier is Q bits, wherein the value of Q is 16 times M, and each 16-bit value indicates a destination terminal of one PSSCH among the M PSSCHs scheduled by the first information; Enabling or disabling of a first HARQ feedback, where the information field length of enabling or disabling the first HARQ feedback is M bits, and each bit value indicates a state of enabling or disabling HARQ feedback of one PSSCH among the M PSSCHs scheduled by the first information; Service type, the information field length of the service type is 2 bits; A channel state information CSI request, where the information field length of the CSI request is 1 bit; A first source identifier, wherein the information field of the first source identifier is 8 bits; Area identifier, the information field length of the area identifier is 12 bits; Communication distance requirement: the information field length of the communication distance requirement is 4 bits.

6. The method according to claim 1, characterized in that The information fields in the second-stage SCI include one or more of the following: A second new data indication, wherein the information field length of the second new data indication is 1 bit; A second redundancy version, wherein the information field length of the second redundancy version is 2 bits; A second HARQ process identifier, where the information field length of the second HARQ process identifier is 4 bits; A second destination identifier, wherein the information field length of the second destination identifier is 16 bits; enabling or disabling of the second HARQ feedback, where the enabling or disabling of the second HARQ feedback corresponding information field length is 1 bit; Service type, the information field length of the service type is 2 bits; A channel state information CSI request, where the information field length of the CSI request is 1 bit; Area identifier, the information field length of the area identifier is 12 bits; A second source identifier, wherein the information field length of the second source identifier is 8 bits; Communication distance requirement: the information field length of the communication distance requirement is 4 bits.

7. The method according to claim 1, characterized in that The information fields in the first-stage SCI include one or more of the following: A priority value, where the information field length of the priority value is 3 times M bits, and each 3-bit value indicates the priority value of one PSSCH among the M PSSCHs scheduled by the first information; Modulation and coding MCS scheme, the information field length of the MCS scheme is 5 bits; A resource reservation period, wherein the information field length of the reserved resource period is O bits, where O is the logarithm of P with 2 as the base, and P is the number of resource periods; Demodulation reference signal DMRS structure; The format of the second-stage SCI, wherein the information field length of the second-stage SCI format is 2 bits; a first offset indication value; Number of DMRS ports; Overhead of the physical sidelink feedback channel; First time domain resources; A first frequency domain resource; The number M of PSSCHs scheduled by the first information.

8. The method according to claim 7, characterized in that The first time domain resource is used to indicate at least one of the following: M consecutive PSSCH time domain resources; The M PSSCH time domain resources correspond to N reserved time domain resources, where N is an integer.

9. The method according to claim 8, characterized in that The first time domain resource carried by the SCI in the first stage is indicated by means of a time domain resource indication TRIV.

10. The method according to claim 9, wherein the TRIV is used to indicate a first time domain position; The first time domain position is the time domain position of the first PSSCH among the M PSSCHs reserved each time in the N reserved time domain resources.

11. The method according to claim 10, characterized in that The time domain position of the first PSSCH in the M consecutive PSSCHs scheduled this time is the second time domain position, and the second time domain position is obtained based on blind detection; The first time domain position is obtained based on the second time domain position and an offset, where the offset is an offset between the second time domain position and the first time domain position.

12. The method according to claim 7, characterized in that The first frequency domain resource is used to indicate at least one of the following: The frequency domain resources of the M PSSCHs scheduled this time have the same frequency domain starting position and the same number of frequency domain resources; The M PSSCH frequency domain resources correspond to N reserved frequency domain resources, where N is an integer, and the frequency domain starting positions of the M PSSCH frequency domain resources in each reserved frequency domain resource in the N reserved frequency domain resources are different, and have the same number of frequency domain resources.

13. The method according to claim 12, characterized in that The first frequency domain resource in the first stage SCI is indicated by means of frequency domain resource FRIV.

14. The method according to claim 13, characterized in that The FRIV is used to indicate at least one of the following: The number of frequency domain resources and the starting position of the first frequency domain; The first frequency domain starting position is the frequency domain position of the first PSSCH among the M PSSCHs reserved each time in the N reserved frequency domain resources.

15. The method according to any one of claims 12 to 14, characterized in that The frequency domain position of the first PSSCH among the M consecutive PSSCHs scheduled this time is the second frequency domain position, and the second frequency domain position is obtained based on blind detection; The first frequency domain position is obtained based on the second time domain position and an offset, and the offset is an offset between the first frequency domain position and the second frequency domain position.

16. A communication method, characterized in that: The method comprises: The second terminal obtains the first information sent by the first terminal; Scheduling M physical sidelink shared channels PSSCH based on the first information; Wherein, M is an integer greater than or equal to 1, and the first information includes first-stage side link control information SCI and second-stage SCI.

17. The method according to claim 16, characterized in that The first-stage SCI and the second-stage SCI are carried in a first time slot, where the first time slot is a time slot where a first PSSCH among the M PSSCHs is located; The first information includes the first-stage SCI corresponding to the M PSSCHs and the second-stage SCI corresponding to the M PSSCHs SCI, wherein the number of SCIs in the first stage is 1 and the number of SCIs in the second stage is 1.

18. The method according to claim 16, characterized in that The first stage SCI is carried in the first time slot, and the second stage SCI is carried in the time slots where M PSSCHs are located. The first time slot is the time slot where the first PSSCH among the M PSSCHs is located, wherein the number of SCIs in the first stage is 1, and the number of SCIs in the second stage is M.

19. The method according to any one of claims 16 to 18, characterized in that The first information is sent based on a first resource, wherein the first resource appears based on a first period, The first cycle is based on one or more of the following configurations, including: Resource pool, bandwidth portion BWP, or carrier.

20. The method according to claim 16, characterized in that The information fields in the second-stage SCI include one or more of the following: A first hybrid automatic repeat request process identifier HARQ process ID, where the information field length of the first HARQ process ID is 5 bits, and the first HARQ process ID indicates the HARQ process number of the first PSSCH among the M PSSCHs scheduled by the first information; A first redundancy version RV, wherein the information field length of the first redundancy version is M bits, and each bit value indicates a redundancy version value of one PSSCH among M PSSCHs scheduled by the first information, where M is an integer greater than 1; A first new data indication NDI, wherein the information field length of the first new data indication is M bits, and each bit value indicates a new data indication of one PSSCH among the M PSSCHs scheduled by the first information; A first destination identifier Destination ID, wherein the information field of the first destination identifier indicates M destination identifiers, and the information field length of the first destination identifier is Q bits, wherein the value of Q is 16 times M, and each 16-bit value indicates a destination terminal of one PSSCH among the M PSSCHs scheduled by the first information; Enabling or disabling of a first HARQ feedback, where the information field length of enabling or disabling the first HARQ feedback is M bits, and each bit value indicates a state of enabling or disabling HARQ feedback of one PSSCH among the M PSSCHs scheduled by the first information; Service type, the information field length of the service type is 2 bits; A channel state information CSI request, where the information field length of the CSI request is 1 bit; A first source identifier, wherein the information field of the first source identifier is 8 bits; Area identifier, the information field length of the area identifier is 12 bits; Communication distance requirement: the information field length of the communication distance requirement is 4 bits.

21. The method according to claim 16, characterized in that The information fields in the second-stage SCI include one or more of the following: A second new data indication, wherein the information field length of the second new data indication is 1 bit; A second redundancy version, wherein the information field length of the second redundancy version is 2 bits; A second HARQ process identifier, where the information field length of the second HARQ process identifier is 4 bits; A second destination identifier, wherein the information field length of the second destination identifier is 16 bits; enabling or disabling of the second HARQ feedback, where the enabling or disabling of the second HARQ feedback corresponding information field length is 1 bit; Service type, the information field length of the service type is 2 bits; A channel state information CSI request, where the information field length of the CSI request is 1 bit; Area identifier, the information field length of the area identifier is 12 bits; A second source identifier, wherein the information field length of the second source identifier is 8 bits; Communication distance requirement: the information field length of the communication distance requirement is 4 bits.

22. The method according to claim 16, characterized in that The information fields in the first-stage SCI include one or more of the following: A priority value, where the information field length of the priority value is 3 times M bits, and each 3-bit value indicates the priority value of one PSSCH among the M PSSCHs scheduled by the first information; Modulation and coding MCS scheme, the information field length of the MCS scheme is 5 bits; A resource reservation period, wherein the information field length of the reserved resource period is O bits, where O is the logarithm of P with 2 as the base, and P is the number of resource periods; Demodulation reference signal DMRS structure; The format of the second-stage SCI, wherein the information field length of the second-stage SCI format is 2 bits; a first offset indication value; Number of DMRS ports; Overhead of the physical sidelink feedback channel; First time domain resources; A first frequency domain resource; The number M of PSSCHs scheduled by the first information.

23. The method according to claim 22, characterized in that The first time domain resource is used to indicate at least one of the following: M consecutive PSSCH time domain resources; The M PSSCH time domain resources correspond to N reserved time domain resources, where N is an integer.

24. The method according to claim 23, characterized in that The first time domain resource carried by the SCI in the first stage is indicated by means of a time domain resource indication TRIV.

25. The method according to claim 24, wherein the TRIV is used to indicate a first time domain position; The first time domain position is the time domain position of the first PSSCH among the M PSSCHs reserved each time in the N reserved time domain resources.

26. The method according to claim 25, characterized in that The time domain position of the first PSSCH in the M consecutive PSSCHs scheduled this time is the second time domain position, and the second time domain position is obtained based on blind detection; The first time domain position is obtained based on the second time domain position and an offset, where the offset is an offset between the second time domain position and the first time domain position.

27. The method according to claim 22, characterized in that The first frequency domain resource is used to indicate at least one of the following: The frequency domain resources of the M PSSCHs scheduled this time have the same frequency domain starting position and the same number of frequency domain resources; The M PSSCH frequency domain resources correspond to N reserved frequency domain resources, where N is an integer, and the frequency domain starting positions of the M PSSCH frequency domain resources in each reserved frequency domain resource in the N reserved frequency domain resources are different, and have the same number of frequency domain resources.

28. The method according to claim 27, characterized in that The first frequency domain resource in the first stage SCI is indicated by means of frequency domain resource FRIV.

29. The method according to claim 28, characterized in that The FRIV is used to indicate at least one of the following: The number of frequency domain resources and the starting position of the first frequency domain; The first frequency domain starting position is the frequency domain position of the first PSSCH among the M PSSCHs reserved each time in the N reserved frequency domain resources.

30. The method according to any one of claims 27 to 29, characterized in that The frequency domain position of the first PSSCH among the M consecutive PSSCHs scheduled this time is the second frequency domain position, and the second frequency domain position is obtained based on blind detection; The first frequency domain position is obtained based on the second time domain position and an offset, and the offset is an offset between the first frequency domain position and the second frequency domain position.

31. A communication method, characterized in that: The method comprises: The first device sends first information to the second device, where the first information is used to schedule M physical sidelink shared channels PSSCH; The second device obtains first information, and schedules M PSSCHs based on the first information; Wherein, M is an integer greater than or equal to 1, and the first information includes first-stage side link control information SCI and second-stage SCI.

32. A first terminal, characterized in that: include: A transceiver module, configured to send first information to a second terminal, wherein the first information is used to schedule M physical sidelink shared channels PSSCH; Wherein, M is an integer greater than or equal to 1, and the first information includes first-stage side link control information SCI and second-stage SCI.

33. A second terminal, characterized in that: include: A transceiver module, used for acquiring first information sent by a first terminal; A processing module, configured to schedule M physical sidelink shared channels PSSCH based on the first information; Wherein, M is an integer greater than or equal to 1, and the first information includes first-stage side link control information SCI and second-stage SCI.

34. A first terminal, characterized in that: include: one or more processors; The processor is used to execute the communication method according to any one of claims 1 to 15.

35. A second terminal, characterized in that: include: one or more processors; The processor is used to execute the communication method described in any one of claims 16 to 30.

36. A communication system, characterized in that: The invention comprises a first terminal and a second terminal, wherein the first terminal is configured to implement the communication method according to any one of claims 1 to 15, and the second terminal is configured to implement the communication method according to any one of claims 16 to 30.

37. A storage medium storing instructions, characterized in that: When the instruction is executed on a communication device, the communication device is caused to execute the communication method according to any one of claims 1 to 15 or 16 to 30.

Images