A time slot determination method, device and terminal

Abstract

The present invention provides a time slot determination method, device, and terminal, wherein the time slot determination method includes: determining the time slot monitored by the first terminal, the time slot being determined based on at least one of the following information: a first time slot #imgabs0# parameter value, the parameter value including at least one of a first value X1, a second value X2, a third value X3, and a fourth value X4; a first interval or a first step length; a high-level layer triggering the first terminal to determine the time slot n of a resource subset, the resource subset being used by the high-level layer to select resources for transmission of a bypass control channel PSCCH and / or a bypass shared channel PSSCH. This solution can avoid collisions with semi-statically reserved and dynamically reserved resources of other terminals, thereby reducing the probability of resource collisions in some perception mechanisms, reducing interference, and improving the reliability of data transmission. It effectively solves the problem of high probability of resource collisions and poor reliability in the time slot confirmation scheme for sidelink resource perception and selection in the prior art.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to a time slot determination method, device and terminal. Background Art

[0002] The current sidelink resource awareness and selection solution involves the following technologies:

[0003] Technology 1: NR (New Radio) V2X (Internet of Things) Mode-2 Resource Allocation

[0004] NR V2X supports two resource allocation modes: Mode-1 resource allocation mode and Mode-2 resource allocation mode. Mode-1 is the resource allocation mode controlled by the base station, and Mode-2 is the resource allocation mode independently by the terminal. The resource selection mode of Mode-2 is "listen before send". It senses the resources in the sensing window and determines the resources to be selected in the resource selection window. Its basic working process is as follows:

[0005] (1) Determination of resource selection window and perception window: If resource selection is triggered at time n, then the resource selection window is [n+T1,n+T2], and the perception window is [n-T0,nT proc,0 ];

[0006] (2) Sensing process: demodulating the PSCCH (bypass control channel) sent by other terminals in the sensing window and collecting RSRP (reference signal received power) information;

[0007] (3) Resource exclusion process:

[0008] 1) V2X is half-duplex and cannot monitor in its own transmission time slot. Therefore, it can only assume that one or more resources reserved by other UEs (terminals) in this time slot with all possible periodicities configured by the system overlap with the candidate resources in the current resource selection window or the periodically reserved resources after the candidate resources. The resources are excluded;

[0009] 2) If the occupied resources and one or more subsequent reserved resources indicated by the decoded SCI (bypass control information) overlap with the candidate resources in the resource selection window or one or more reserved resources after the candidate resources, and the RSRP is higher than a certain threshold, the resources are excluded;

[0010] (4) If the remaining resources are less than X% of the full set, increase the RSRP threshold by 3dB and repeat the resource exclusion step;

[0011] (5) Report the available resources to the MAC (Media Access Control) layer, which performs random selection.

[0012] The design of Rel-16 V2X resource selection mode 2 is based on the "always-on" assumption, focusing only on terminals such as vehicles with sufficient power supply. One goal of Rel-17 Sidelink is to design corresponding mechanisms to meet energy-saving requirements for terminals such as vulnerable road users (VRUs) in V2X and UEs (handheld terminals) in public safety and commercial use cases. The baseline is based on the partial sensing of Rel-14 LTE Sidelink.

[0013] Technology 2: LTE (Long Term Evolution) Partial Sensing

[0014] (1) Determination of resource selection window and perception window: The resource selection window is reduced to Y subframes in the previous [n+T1, n+T2], where Y is selected by the terminal itself and needs to be greater than or equal to the parameter minNumCandidateSF (minimum number of candidate subframes SF) configured by the high-level layer; the perception window also becomes a subset of the previous perception window and is related to Y subframes, that is, if a subframe If it is included in the Y subframes of the resource selection window and the corresponding high-level parameter gapCandidateSensing is set to 1, then the terminal needs to sense subframe, where gap (interval) = b × Pstep (step length, period), b is an integer greater than 0. For example, if the perception window is 1000ms, the resource selection window is 100ms, and Pstep = 100ms, Figure 1 As shown in the figure (a represents gapCandidateSensing, b represents Y candidate subframes), the terminal selects Y candidate subframes (Y subframe) in the resource selection window, and the corresponding candidate sensing subframes in the sensing window are the subframes in the dotted box. Through the high-level configuration parameter gapCandidateSensing (gap candidate sensing), the final sensing subframe can be further determined to be a subset of the subframes in the dotted box.

[0015] (2) The other steps are the same as the normal sensing and resource selection process.

[0016] Based on the above technologies, existing sidelink resource perception and selection solutions have the following problems:

[0017] Problem 1: Insufficient resource perception increases the probability of resource collisions;

[0018] (1) As can be seen from the above, the LTE-V partial sensing mechanism can effectively avoid resource collisions with semi-statically reserved resources of other terminals. However, for dynamic resource reservations in time slots very close to the resource selection trigger time n, the LTE-V partial sensing mechanism cannot avoid resource collisions.

[0019] (2) LTE-V supports dynamic resource reservation up to 2 times, while NR-V supports dynamic resource reservation up to 32 times. Therefore, the above problem is more serious in NR-V, and the probability of resource collision increases, which will make the reliability of data transmission unguaranteed.

[0020] Problem 2: Some sensing mechanisms cause the RSRP threshold to be too high;

[0021] (1) As can be seen from the above, in V2X resource selection, when the remaining candidate resources are less than X% of the full set, the RSRP threshold will be increased. However, if the RSRP threshold is too high, it will cause mutual interference and the reliability of data transmission cannot be guaranteed;

[0022] (2) In some sensing mechanisms, the resource selection window is reduced to Y subframes in the previous [n+T1, n+T2]. On the one hand, this will make the remaining candidate resources smaller. On the other hand, since the Y subframes are randomly selected by the terminal, the occupancy rate of the Y subframes may be high. This will cause the RSRP threshold to continue to increase, and the problem of the threshold being too high will become more serious, resulting in the inability to guarantee the reliability of data transmission.

[0023] Question 3: From the above content, it can be seen that the selection of Y subframes depends entirely on the terminal implementation on the basis of being greater than the high-level configuration parameter minNumCandidateSF. If the terminal implements it arbitrarily, the selected resources may not meet the latency and / or reliability requirements.

[0024] As can be seen from the above, the time slot confirmation scheme for sidelink resource perception and selection in the prior art has the problems of high probability of resource collision and poor reliability. Summary of the Invention

[0025] The object of the present invention is to provide a time slot determination method, device and terminal to solve the problem that the time slot confirmation scheme for sidelink resource perception and selection in the prior art leads to a high probability of resource collision and poor reliability.

[0026] In order to solve the above technical problem, an embodiment of the present invention provides a time slot determination method, which is applied to a first terminal, and the method includes:

[0027] Determine a time slot monitored by the first terminal, where the time slot is determined based on at least one of the following information:

[0028] First time slot

[0029] a parameter value, wherein the parameter value includes at least one of a first value X1, a second value X2, a third value X3, and a fourth value X4;

[0030] First interval or first step length;

[0031] The higher layer triggers the first terminal to determine a time slot n of a resource subset, where the higher layer selects resources for transmitting a bypass control channel PSCCH and / or a bypass shared channel PSSCH.

[0032] Optionally, the parameter value is agreed upon by the protocol, or pre-configured, or configured by network-side high-layer signaling, or configured by physical layer downlink control signaling; and / or,

[0033] The first interval or the first step length is determined according to a configured or preconfigured resource reservation period list, or is agreed upon by a protocol.

[0034] Optionally, determining the time slot monitored by the first terminal includes at least one of the following operations:

[0035] When the value of the kth bit of the first indication is a preset value, it is determined that the first terminal monitors the first time slot. m time slots of the first interval or the first step length are spaced apart, and the first indication is used to indicate the time slots sensed or monitored by the first terminal;

[0036] Determine the time slot monitored by the first terminal from the first time slot Previous X1 time slots Start to the first time slot within the time interval or time window before the first time T1;

[0037] Determine the time slot monitored by the first terminal from the first time slot The time interval or time window starting from X2 ms before the corresponding time a to the second time T2 before the time a;

[0038] Determine that the time slot monitored by the first terminal is in the slave time slot The previous X3 time slots start to the time slot The time interval or time window before the third time T3; wherein, if the time slot n belongs to the bypass SL resource pool, the time slot Otherwise, the time slot The first time slot after the time slot n among the time slots included in the SL resource pool;

[0039] It is determined that the time slot monitored by the first terminal is within a time interval or a time window starting from X4 time slots before time slot n to a fourth time T4 before time slot n.

[0040] Optionally, the first time slot used to determine the time slot monitored by the first terminal is: the first time slot in the first time interval The first or earliest one in the first time interval, or the first time slot in the first time interval Each of them.

[0041] Optionally, the method further includes:

[0042] Determine a group of time slots; wherein, the group of time slots is within a first time interval, and the group of time slots includes at least Y of the first time slots

[0043] Optionally, Y is agreed upon by the protocol or pre-configured or configured by high-level signaling on the network side.

[0044] Optionally, Y is in a resource pool configuration, and / or, Y is configured for a given priority value.

[0045] Optionally, the method further includes:

[0046] Initializing a first set to all candidate single-slot resources, excluding single-slot resources that meet a first condition from the first set, and then performing the first operation and / or the second operation if the number of remaining candidate single-slot resources in the first set is less than the product of the total number M of the candidate single-slot resources and a second value;

[0047] The first operation includes: increasing the reference signal received power RSRP threshold by a third value;

[0048] The second operation includes: setting the first time slot in the group of time slots The number of is increased by Z1 or increased to N1, or the Y is increased by Z2 or increased to N2.

[0049] Optionally, the second parameter value is determined by at least one of the following methods: determined by the first terminal through implementation, agreed upon by a protocol, pre-configured, configured by network-side high-layer signaling, or configured by physical layer downlink control signaling;

[0050] and / or, the third parameter value is a fixed value, or a value corresponding to a given priority;

[0051] The second parameter value includes at least one of the second value, the third value, Z1, Z2, N1 and N2;

[0052] The third parameter value includes at least one of Z1, Z2, N1 and N2.

[0053] Optionally, performing the first operation and / or the second operation includes:

[0054] The first time slot in the set of time slots The number of is increased by Z1 or increased to N1, or,

[0055] Increase Y by Z2 or to N2, or,

[0056] The RSRP threshold is increased by a third value, and when the total value of the RSRP threshold increase reaches a fourth value, or the total number of times the RSRP threshold is increased reaches a fifth value, the first time slot in the group of time slots is increased. Increase the number of by Z1 or increase it to N1, or increase Y by Z2 or increase it to N2.

[0057] Optionally, the fourth parameter value is determined by at least one of the following methods: determined by the first terminal through implementation, agreed upon by protocol, pre-configured, configured by network side high-layer signaling, or configured by physical layer downlink control signaling; and / or,

[0058] The fifth parameter value is a fixed value, or a value corresponding to a given priority;

[0059] Wherein, the fourth parameter value includes at least one of the fourth value and the fifth value;

[0060] The fifth parameter value includes at least one of the fourth value and the fifth value.

[0061] An embodiment of the present invention further provides a time slot determination method, applied to a second terminal, the method comprising:

[0062] Initializing a first set to all candidate single-slot resources, excluding single-slot resources that meet a first condition from the first set, and then performing the first operation and / or the second operation if the number of remaining candidate single-slot resources in the first set is less than the product of the total number M of the candidate single-slot resources and a second value;

[0063] The first operation includes: increasing the reference signal received power RSRP threshold by a third value;

[0064] The second operation includes: setting a first time slot in a group of time slots Increase the number of by Z1 or to N1, or increase Y by Z2 or to N2;

[0065] The group of time slots is within a first time interval, and the group of time slots includes at least Y of the first time slots.

[0066] Optionally, the second parameter value is determined by at least one of the following methods: determined by the second terminal through implementation, agreed upon by a protocol, pre-configured, configured by network-side high-layer signaling, or configured by physical layer downlink control signaling;

[0067] and / or, the third parameter value is a fixed value, or a value corresponding to a given priority;

[0068] The second parameter value includes at least one of the second value, the third value, Z1, Z2, N1 and N2;

[0069] The third parameter value includes at least one of Z1, Z2, N1 and N2.

[0070] Optionally, performing the first operation and / or the second operation includes:

[0071] The first time slot in the set of time slots The number of is increased by Z1 or increased to N1, or,

[0072] Increase Y by Z2 or to N2, or,

[0073] The RSRP threshold is increased by a third value, and when the total value of the RSRP threshold increase reaches a fourth value, or the total number of times the RSRP threshold is increased reaches a fifth value, the first time slot in the group of time slots is increased. Increase the number of by Z1 or increase it to N1, or increase Y by Z2 or increase it to N2.

[0074] Optionally, the fourth parameter value is determined by at least one of the following methods: determined by the second terminal through implementation, agreed upon by protocol, pre-configured, configured by network side high-layer signaling, or configured by physical layer downlink control signaling; and / or,

[0075] The fifth parameter value is a fixed value, or a value corresponding to a given priority;

[0076] Wherein, the fourth parameter value includes at least one of the fourth value and the fifth value;

[0077] The fifth parameter value includes at least one of the fourth value and the fifth value.

[0078] Optionally, Y is agreed upon by the protocol or pre-configured or configured by high-level signaling on the network side.

[0079] Optionally, Y is in a resource pool configuration, and / or, Y is configured for a given priority value.

[0080] An embodiment of the present invention further provides a time slot determination device, applied to a first terminal, the device comprising:

[0081] A first determining module is configured to determine a time slot monitored by the first terminal, where the time slot is determined based on at least one of the following information:

[0082] First time slot

[0083] a parameter value, wherein the parameter value includes at least one of a first value X1, a second value X2, a third value X3, and a fourth value X4;

[0084] First interval or first step length;

[0085] The higher layer triggers the first terminal to determine a time slot n of a resource subset, where the higher layer selects resources for transmitting a bypass control channel PSCCH and / or a bypass shared channel PSSCH.

[0086] Optionally, the parameter value is agreed upon by the protocol, or pre-configured, or configured by network-side high-layer signaling, or configured by physical layer downlink control signaling; and / or,

[0087] The first interval or the first step length is determined according to a configured or preconfigured resource reservation period list, or is agreed upon by a protocol.

[0088] Optionally, determining the time slot monitored by the first terminal includes at least one of the following operations:

[0089] When the value of the kth bit of the first indication is a preset value, it is determined that the first terminal monitors the first time slot. m time slots of the first interval or the first step length are spaced apart, and the first indication is used to indicate the time slots sensed or monitored by the first terminal;

[0090] Determine the time slot monitored by the first terminal from the first time slot Previous X1 time slots Start to the first time slot within the time interval or time window before the first time T1;

[0091] Determine the time slot monitored by the first terminal from the first time slot The time interval or time window starting from X2 ms before the corresponding time a to the second time T2 before the time a;

[0092] Determine that the time slot monitored by the first terminal is in the slave time slot The previous X3 time slots start to the time slot The time interval or time window before the third time T3; wherein, if the time slot n belongs to the bypass SL resource pool, the time slot Otherwise, the time slot The first time slot after the time slot n among the time slots included in the SL resource pool;

[0093] It is determined that the time slot monitored by the first terminal is within a time interval or a time window starting from X4 time slots before time slot n to a fourth time T4 before time slot n.

[0094] Optionally, the first time slot used to determine the time slot monitored by the first terminal is: the first time slot in the first time interval The first or earliest one in the first time interval, or the first time slot in the first time interval Each of them.

[0095] Optionally, the device further includes:

[0096] The second determining module is configured to determine a group of time slots; wherein the group of time slots is within a first time interval, and the group of time slots includes at least Y of the first time slots.

[0097] Optionally, Y is agreed upon by the protocol or pre-configured or configured by high-level signaling on the network side.

[0098] Optionally, Y is in a resource pool configuration, and / or, Y is configured for a given priority value.

[0099] Optionally, the device further includes:

[0100] a first processing module, configured to initialize a first set to all candidate single-slot resources, exclude single-slot resources that meet a first condition from the first set, and then perform a first operation and / or a second operation if the number of remaining candidate single-slot resources in the first set is less than a product of a total number M of the candidate single-slot resources and a second value;

[0101] The first operation includes: increasing the reference signal received power RSRP threshold by a third value;

[0102] The second operation includes: setting the first time slot in the group of time slots The number of is increased by Z1 or increased to N1, or the Y is increased by Z2 or increased to N2.

[0103] Optionally, the second parameter value is determined by at least one of the following methods: determined by the first terminal through implementation, agreed upon by a protocol, pre-configured, configured by network-side high-layer signaling, or configured by physical layer downlink control signaling;

[0104] and / or, the third parameter value is a fixed value, or a value corresponding to a given priority;

[0105] The second parameter value includes at least one of the second value, the third value, Z1, Z2, N1 and N2;

[0106] The third parameter value includes at least one of Z1, Z2, N1 and N2.

[0107] Optionally, performing the first operation and / or the second operation includes:

[0108] The first time slot in the set of time slots The number of is increased by Z1 or increased to N1, or,

[0109] Increase Y by Z2 or to N2, or,

[0110] The RSRP threshold is increased by a third value, and when the total value of the RSRP threshold increase reaches a fourth value, or the total number of times the RSRP threshold is increased reaches a fifth value, the first time slot in the group of time slots is increased. Increase the number of by Z1 or increase it to N1, or increase Y by Z2 or increase it to N2.

[0111] Optionally, the fourth parameter value is determined by at least one of the following methods: determined by the first terminal through implementation, agreed upon by protocol, pre-configured, configured by network side high-layer signaling, or configured by physical layer downlink control signaling; and / or,

[0112] The fifth parameter value is a fixed value, or a value corresponding to a given priority;

[0113] Wherein, the fourth parameter value includes at least one of the fourth value and the fifth value;

[0114] The fifth parameter value includes at least one of the fourth value and the fifth value.

[0115] An embodiment of the present invention further provides a time slot determination device, applied to a second terminal, the device comprising:

[0116] a second processing module, configured to initialize the first set to all candidate single-slot resources, exclude the single-slot resources that meet the first condition from the first set, and then perform the first operation and / or the second operation if the number of candidate single-slot resources remaining in the first set is less than the product of the total number M of the candidate single-slot resources and the second value;

[0117] The first operation includes: increasing the reference signal received power RSRP threshold by a third value;

[0118] The second operation includes: setting a first time slot in a group of time slots Increase the number of by Z1 or to N1, or increase Y by Z2 or to N2;

[0119] The group of time slots is within a first time interval, and the group of time slots includes at least Y of the first time slots.

[0120] Optionally, the second parameter value is determined by at least one of the following methods: determined by the second terminal through implementation, agreed upon by a protocol, pre-configured, configured by network-side high-layer signaling, or configured by physical layer downlink control signaling;

[0121] and / or, the third parameter value is a fixed value, or a value corresponding to a given priority;

[0122] The second parameter value includes at least one of the second value, the third value, Z1, Z2, N1 and N2;

[0123] The third parameter value includes at least one of Z1, Z2, N1 and N2.

[0124] Optionally, performing the first operation and / or the second operation includes:

[0125] The first time slot in the set of time slots The number of is increased by Z1 or increased to N1, or,

[0126] Increase Y by Z2 or to N2, or,

[0127] The RSRP threshold is increased by a third value, and when the total value of the RSRP threshold increase reaches a fourth value, or the total number of times the RSRP threshold is increased reaches a fifth value, the first time slot in the group of time slots is increased. Increase the number of by Z1 or increase it to N1, or increase Y by Z2 or increase it to N2.

[0128] Optionally, the fourth parameter value is determined by at least one of the following methods: determined by the second terminal through implementation, agreed upon by protocol, pre-configured, configured by network side high-layer signaling, or configured by physical layer downlink control signaling; and / or,

[0129] The fifth parameter value is a fixed value, or a value corresponding to a given priority;

[0130] Wherein, the fourth parameter value includes at least one of the fourth value and the fifth value;

[0131] The fifth parameter value includes at least one of the fourth value and the fifth value.

[0132] Optionally, Y is agreed upon by the protocol or pre-configured or configured by high-level signaling on the network side.

[0133] Optionally, Y is in a resource pool configuration, and / or, Y is configured for a given priority value.

[0134] An embodiment of the present invention further provides a terminal, which is a first terminal and includes: a processor;

[0135] The processor is configured to determine a time slot monitored by the first terminal, where the time slot is determined according to at least one of the following information:

[0136] First time slot

[0137] a parameter value, wherein the parameter value includes at least one of a first value X1, a second value X2, a third value X3, and a fourth value X4;

[0138] First interval or first step length;

[0139] The higher layer triggers the first terminal to determine a time slot n of a resource subset, where the higher layer selects resources for transmitting a bypass control channel PSCCH and / or a bypass shared channel PSSCH.

[0140] Optionally, the parameter value is agreed upon by the protocol, or pre-configured, or configured by network-side high-layer signaling, or configured by physical layer downlink control signaling; and / or,

[0141] The first interval or the first step length is determined according to a configured or preconfigured resource reservation period list, or is agreed upon by a protocol.

[0142] Optionally, determining the time slot monitored by the first terminal includes at least one of the following operations:

[0143] When the value of the kth bit of the first indication is a preset value, it is determined that the first terminal monitors the first time slot. m time slots of the first interval or the first step length are spaced apart, and the first indication is used to indicate the time slots sensed or monitored by the first terminal;

[0144] Determine the time slot monitored by the first terminal from the first time slot Previous X1 time slots Start to the first time slot within the time interval or time window before the first time T1;

[0145] Determine the time slot monitored by the first terminal from the first time slot The time interval or time window starting from X2 ms before the corresponding time a to the second time T2 before the time a;

[0146] Determine that the time slot monitored by the first terminal is in the slave time slot The previous X3 time slots start to the time slot The time interval or time window before the third time T3; wherein, if the time slot n belongs to the bypass SL resource pool, the time slot Otherwise, the time slot The first time slot after the time slot n among the time slots included in the SL resource pool;

[0147] It is determined that the time slot monitored by the first terminal is within a time interval or a time window starting from X4 time slots before time slot n to a fourth time T4 before time slot n.

[0148] Optionally, the first time slot used to determine the time slot monitored by the first terminal is: the first time slot in the first time interval The first or earliest one in the first time interval, or the first time slot in the first time interval Each of them.

[0149] Optionally, the processor is further configured to:

[0150] Determine a group of time slots; wherein, the group of time slots is within a first time interval, and the group of time slots includes at least Y of the first time slots

[0151] Optionally, Y is agreed upon by the protocol or pre-configured or configured by high-level signaling on the network side.

[0152] Optionally, Y is in a resource pool configuration, and / or, Y is configured for a given priority value.

[0153] Optionally, the processor is further configured to:

[0154] Initializing a first set to all candidate single-slot resources, excluding single-slot resources that meet a first condition from the first set, and then performing the first operation and / or the second operation if the number of remaining candidate single-slot resources in the first set is less than the product of the total number M of the candidate single-slot resources and a second value;

[0155] The first operation includes: increasing the reference signal received power RSRP threshold by a third value;

[0156] The second operation includes: setting the first time slot in the group of time slots The number of is increased by Z1 or increased to N1, or the Y is increased by Z2 or increased to N2.

[0157] Optionally, the second parameter value is determined by at least one of the following methods: determined by the first terminal through implementation, agreed upon by a protocol, pre-configured, configured by network-side high-layer signaling, or configured by physical layer downlink control signaling;

[0158] and / or, the third parameter value is a fixed value, or a value corresponding to a given priority;

[0159] The second parameter value includes at least one of the second value, the third value, Z1, Z2, N1 and N2;

[0160] The third parameter value includes at least one of Z1, Z2, N1 and N2.

[0161] Optionally, performing the first operation and / or the second operation includes:

[0162] The first time slot in the set of time slots The number of is increased by Z1 or increased to N1, or,

[0163] Increase Y by Z2 or to N2, or,

[0164] The RSRP threshold is increased by a third value, and when the total value of the RSRP threshold increase reaches a fourth value, or the total number of times the RSRP threshold is increased reaches a fifth value, the first time slot in the group of time slots is increased. Increase the number of by Z1 or increase it to N1, or increase Y by Z2 or increase it to N2.

[0165] Optionally, the fourth parameter value is determined by at least one of the following methods: determined by the first terminal through implementation, agreed upon by protocol, pre-configured, configured by network side high-layer signaling, or configured by physical layer downlink control signaling; and / or,

[0166] The fifth parameter value is a fixed value, or a value corresponding to a given priority;

[0167] Wherein, the fourth parameter value includes at least one of the fourth value and the fifth value;

[0168] The fifth parameter value includes at least one of the fourth value and the fifth value.

[0169] An embodiment of the present invention further provides a terminal, which is a second terminal and includes: a processor;

[0170] The processor is configured to initialize a first set to all candidate single-slot resources, exclude single-slot resources that meet a first condition from the first set, and then perform the first operation and / or the second operation if the number of candidate single-slot resources remaining in the first set is less than the product of the total number M of the candidate single-slot resources and a second value;

[0171] The first operation includes: increasing the reference signal received power RSRP threshold by a third value;

[0172] The second operation includes: setting a first time slot in a group of time slots Increase the number of by Z1 or to N1, or increase Y by Z2 or to N2;

[0173] The group of time slots is within a first time interval, and the group of time slots includes at least Y of the first time slots.

[0174] Optionally, the second parameter value is determined by at least one of the following methods: determined by the second terminal through implementation, agreed upon by a protocol, pre-configured, configured by network-side high-layer signaling, or configured by physical layer downlink control signaling;

[0175] and / or, the third parameter value is a fixed value, or a value corresponding to a given priority;

[0176] The second parameter value includes at least one of the second value, the third value, Z1, Z2, N1 and N2;

[0177] The third parameter value includes at least one of Z1, Z2, N1 and N2.

[0178] Optionally, performing the first operation and / or the second operation includes:

[0179] The first time slot in the set of time slots The number of is increased by Z1 or increased to N1, or,

[0180] Increase Y by Z2 or to N2, or,

[0181] The RSRP threshold is increased by a third value, and when the total value of the RSRP threshold increase reaches a fourth value, or the total number of times the RSRP threshold is increased reaches a fifth value, the first time slot in the group of time slots is increased. Increase the number of by Z1 or increase it to N1, or increase Y by Z2 or increase it to N2.

[0182] Optionally, the fourth parameter value is determined by at least one of the following methods: determined by the second terminal through implementation, agreed upon by protocol, pre-configured, configured by network side high-layer signaling, or configured by physical layer downlink control signaling; and / or,

[0183] The fifth parameter value is a fixed value, or a value corresponding to a given priority;

[0184] Wherein, the fourth parameter value includes at least one of the fourth value and the fifth value;

[0185] The fifth parameter value includes at least one of the fourth value and the fifth value.

[0186] Optionally, Y is agreed upon by the protocol or pre-configured or configured by high-level signaling on the network side.

[0187] Optionally, Y is in a resource pool configuration, and / or, Y is configured for a given priority value.

[0188] An embodiment of the present invention further provides a terminal, comprising a memory, a processor, and a program stored in the memory and executable on the processor; when the processor executes the program, the method for determining the time slot on the first terminal side is implemented; or,

[0189] When the processor executes the program, the time slot determination method on the second terminal side is implemented.

[0190] An embodiment of the present invention further provides a readable storage medium having a program stored thereon, which, when executed by a processor, implements the steps in the above-mentioned method for determining the time slot on the first terminal side; or,

[0191] When the program is executed by a processor, the steps of the above-mentioned method for determining the time slot on the second terminal side are implemented.

[0192] The beneficial effects of the above technical solution of the present invention are as follows:

[0193] In the above solution, the time slot determination method determines the time slot monitored by the first terminal, and the time slot is determined based on at least one of the following information: the first time slot Parameter value, the parameter value includes at least one of a first value X1, a second value X2, a third value X3 and a fourth value X4; a first interval or a first step length; the high layer triggers the first terminal to determine the time slot n of the resource subset, and the resource subset is used by the high layer to select resources for bypass control channel PSCCH and / or bypass shared channel PSSCH transmission; it can avoid collision with semi-static reservations and dynamically reserved resources of other terminals, thereby reducing the probability of resource collision in some perception mechanisms, reducing interference, and improving the reliability of data transmission, and well solves the problem of high probability of resource collision and poor reliability in the time slot confirmation scheme for sidelink resource perception and selection in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0194] Figure 1 Schematic diagram of LTE Partial sensing in the prior art;

[0195] Figure 2 Schematic diagram of the time slot determination method according to an embodiment of the present invention Figure 1 ;

[0196] Figure 3 Schematic diagram of the time slot determination method according to an embodiment of the present invention Figure 2 ;

[0197] Figure 4 The structure of the time slot determination device according to the embodiment of the present invention is shown as follows: Figure 1 ;

[0198] Figure 5 The structure of the time slot determination device according to the embodiment of the present invention is shown as follows: Figure 2 ;

[0199] Figure 6 The terminal structure of the embodiment of the present invention is shown as follows Figure 1 ;

[0200] Figure 7 The terminal structure of the embodiment of the present invention is shown as follows Figure 2 . DETAILED DESCRIPTION

[0201] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, a detailed description will be given below with reference to the accompanying drawings and specific embodiments.

[0202] The present invention aims to solve the problem that the time slot confirmation scheme for sidelink resource perception and selection in the existing technology has a high probability of resource collision and poor reliability, and provides a time slot determination method applied to a first terminal, such as Figure 2 As shown, the method includes:

[0203] Step 21: Determine the time slot monitored by the first terminal, wherein the time slot is determined based on at least one of the following information: the first time slot Parameter value, the parameter value includes at least one of a first value X1, a second value X2, a third value X3 and a fourth value X4; a first interval or a first step length; the high layer triggers the first terminal to determine the time slot n of the resource subset, and the resource subset is used by the high layer to select resources for the transmission of the bypass control channel PSCCH and / or the bypass shared channel PSSCH.

[0204] Among them, the first time slot Within the time interval [n+T1, n+T2], where [n+T1, n+T2] can be understood as a resource selection window, X1, X2, X3 and X4 are positive integers.

[0205] The time slot determination method provided in the embodiment of the present invention determines the time slot monitored by the first terminal, and the time slot is determined based on at least one of the following information: the first time slot Parameter value, the parameter value includes at least one of a first value X1, a second value X2, a third value X3 and a fourth value X4; a first interval or a first step length; the high layer triggers the first terminal to determine the time slot n of the resource subset, and the resource subset is used by the high layer to select resources for bypass control channel PSCCH and / or bypass shared channel PSSCH transmission; it can avoid collision with semi-static reservations and dynamically reserved resources of other terminals, thereby reducing the probability of resource collision in some perception mechanisms, reducing interference, and improving the reliability of data transmission, and well solves the problem of high probability of resource collision and poor reliability in the time slot confirmation scheme for sidelink resource perception and selection in the prior art.

[0206] The parameter value is agreed upon by the protocol, or pre-configured, or configured by network-side high-level signaling or physical layer downlink control signaling; and / or the first interval or the first step length is determined based on a configured or pre-configured resource reservation period list, or agreed upon by the protocol.

[0207] Specifically, any one of the parameter values ​​may be a value agreed upon by the protocol, or pre-configured, or configured by network-side high-layer signaling, or configured by physical layer downlink control signaling;

[0208] The high-layer signaling may include master information block (SIB) signaling, radio resource control (RRC) signaling, and / or medium access control (MAC) signaling.

[0209] In the embodiment of the present invention, the determining of the time slot monitored by the first terminal includes at least one of the following operations: first, when the value of the kth bit of the first indication is a preset value, determining that the first terminal monitors the first time slot The first indication is used to indicate the time slot sensed or monitored by the first terminal; the second item is to determine the time slot monitored by the first terminal from the first time slot Previous X1 time slots Start to the first time slot The first time before T1 (denoted as ) within a time interval or time window; the third item, determining the time slot monitored by the first terminal in the first time slot The time interval or time window from X2ms before the corresponding moment a to the second time T2 before the moment a (recorded as a-T2); the fourth item is to determine the time slot monitored by the first terminal in the time slot The previous X3 time slots start to the time slot The third time before T3 (recorded as ) within a time interval or time window; wherein, if the time slot n belongs to the bypass SL resource pool, the time slot Otherwise, the time slot It is the first time slot after time slot n among the time slots included in the SL resource pool; the fifth item is to determine that the time slot monitored by the first terminal is within the time interval or time window starting from X4 time slots before time slot n to the fourth time T4 before time slot n (denoted as n-T4).

[0210] The first to fifth items mentioned above can be used separately, or any two or more of them can be used in combination, without limitation.

[0211] k and m can be the same, or m can be related to k; k and m are positive integers, and a is a positive number. Specifically, the first indication can be used to indicate which time slots should be sensed or monitored when certain time slots are considered candidate resources or target time slots. T1 to T4 are in milliseconds or time slots; the values ​​of T1 to T4 can be the same or different.

[0212] In the embodiment of the present invention, the first time slot for determining the time slot monitored by the first terminal is: the first time slot in the first time interval The first or earliest one in the first time interval, or the first time slot in the first time interval Each of them.

[0213] Furthermore, the method further comprises: determining a group of time slots; wherein the group of time slots comprises at least Y of the first time slots within a first time interval. Y is a positive integer.

[0214] Determining a set of time slots may specifically include: determining a set of candidate time slots; a first time interval of [n+T1, n+T2], which may be understood as a resource selection window; more specifically, the first terminal may determine a set of time slots within the time interval [n+T1, n+T2], where the set of time slots includes at least Y first time slots. n represents the time slot at which the higher layer triggers the first terminal to determine the resource subset.

[0215] Here, Y is agreed upon by the protocol or pre-configured or configured by high-level signaling on the network side.

[0216] Specifically, the high-layer signaling may include master information block SIB signaling, radio resource control RRC signaling and / or medium access control MAC signaling.

[0217] Wherein, said Y is in a resource pool configuration, and / or, said Y is configured for a given priority value (for a given priority).

[0218] Pre-configuration can also be done in "Resource Pool Configuration".

[0219] Furthermore, the method further includes: initializing the first set to all candidate single-slot resources, excluding the single-slot resources that meet the first condition from the first set, and if the number of candidate single-slot resources remaining in the first set is less than the product of the total number M of the candidate single-slot resources and the second value, performing the first operation and / or the second operation; wherein the first operation includes: increasing the reference signal received power RSRP threshold by a third value; the second operation includes: increasing the first time slot in the set of time slots by a third value; The number of is increased by Z1 or increased to N1, or the Y is increased by Z2 or increased to N2.

[0220] What is actually added here with respect to the second operation is the candidate time slots.

[0221] The first condition may include at least one of the following:

[0222] The first terminal does not monitor the second time slot, and for any period value in the resource reservation period list configured by the higher layer and an assumed SCI (Sidelink Control Information) received in the second time slot, the SCI indicates all subchannels of the first time slot in the resource pool, and the following step a is satisfied:

[0223] In step a, the resource blocks and time slots determined by the SCI format received in the first time slot, or assuming the same SCI format received in a third set of time slots, overlap with the resources determined by the candidate single time slot resources and the resource reservation period, wherein the second set of time slots is determined based on the first time slot and the resource reservation period indicated by the SCI;

[0224] The first terminal receives the SCI in the first time slot, and the RSRP measurement for the SCI is higher than the RSRP threshold determined according to the priority field in the SCI, and the above step a is satisfied.

[0225] In an embodiment of the present invention, the second parameter value is determined by at least one of the following methods: determined by the first terminal through implementation, agreed upon by the protocol, pre-configured, configured by network-side high-layer signaling, or configured by physical layer downlink control signaling; and / or, the third parameter value is a fixed value, or a value corresponding to a given priority; wherein the second parameter value includes at least one of the second value, the third value, Z1, Z2, N1 and N2; the third parameter value includes at least one of Z1, Z2, N1 and N2.

[0226] Specifically, “the second parameter value is determined by at least one of the following methods: determined by the first terminal through implementation, agreed upon by the protocol, pre-configured, configured by network side high-layer signaling, or configured by physical layer downlink control signaling” means:

[0227] The second value is: determined by the first terminal through implementation, agreed upon by a protocol, pre-configured, configured by network-side high-layer signaling, or configured by physical layer downlink control signaling; and / or,

[0228] The third value is: determined by the first terminal through implementation, agreed upon by a protocol, pre-configured, configured by network-side high-layer signaling, or configured by physical layer downlink control signaling; and / or,

[0229] The Z1 is: determined by the first terminal through implementation, agreed upon by protocol, pre-configured, configured by network-side high-layer signaling, or configured by physical layer downlink control signaling; and / or,

[0230] The Z2 is: determined by the first terminal through implementation, agreed upon by the protocol, pre-configured, configured by network-side high-layer signaling, or configured by physical layer downlink control signaling; and / or,

[0231] The N1 is: determined by the first terminal through implementation, agreed upon by a protocol, pre-configured, configured by network-side high-layer signaling, or configured by physical layer downlink control signaling; and / or,

[0232] The N2 is: determined by the first terminal through implementation, agreed upon by a protocol, pre-configured, configured by network-side high-layer signaling, or configured by physical layer downlink control signaling.

[0233] For example, the second value is agreed upon by the protocol, and Z1 is configured by high-level signaling on the network side.

[0234] “The third parameter value is a fixed value, or a value corresponding to a given priority” means:

[0235] The Z1 is a fixed value, or a value corresponding to a given priority; and / or,

[0236] Z2 is a fixed value, or a value corresponding to a given priority; and / or,

[0237] N1 is a fixed value, or a value corresponding to a given priority; and / or,

[0238] The N2 is a fixed value, or a value corresponding to a given priority.

[0239] The performing of the first operation and / or the second operation comprises: The number of time slots is increased by Z1 or increased to N1, or Y is increased by Z2 or increased to N2, or the RSRP threshold is increased by a third value, and when the total value of the RSRP threshold increase reaches a fourth value, or the total number of times the RSRP threshold is increased reaches a fifth value, the first time slot in the group of time slots is increased. Increase the number of by Z1 or increase it to N1, or increase Y by Z2 or increase it to N2.

[0240] Specifically, the third value may be 3dB; the second value, the third value, and the fourth value may be the same as or different from each other.

[0241] In an embodiment of the present invention, the fourth parameter value is determined by at least one of the following methods: determined by the first terminal through implementation, agreed upon by the protocol, pre-configured, configured by network-side high-layer signaling, or configured by physical layer downlink control signaling; and / or, the fifth parameter value is a fixed value, or a value corresponding to a given priority; wherein the fourth parameter value includes at least one of the fourth value and the fifth value; the fifth parameter value includes at least one of the fourth value and the fifth value.

[0242] Specifically, “the fourth parameter value is determined by at least one of the following methods: determined by the first terminal through implementation, agreed upon by the protocol, pre-configured, configured by network side high-layer signaling, or configured by physical layer downlink control signaling” means:

[0243] The fourth value is: determined by the first terminal through implementation, agreed upon by a protocol, pre-configured, configured by network-side high-layer signaling, or configured by physical layer downlink control signaling; and / or,

[0244] The fifth value is: determined by the first terminal through implementation, agreed upon by protocol, pre-configured, configured by network-side high-layer signaling, or configured by physical layer downlink control signaling.

[0245] "The fifth parameter value is a fixed value, or a value corresponding to a given priority" means:

[0246] The fourth value is a fixed value, or a value corresponding to a given priority; and / or,

[0247] The fifth value is a fixed value, or a value corresponding to a given priority.

[0248] The embodiment of the present invention further provides a time slot determination method, which is applied to a second terminal (which may be the same as or different from the first terminal), such as Figure 3 As shown, the method includes:

[0249] Step 31: Initialize the first set to all candidate single-slot resources, exclude the single-slot resources that meet the first condition from the first set, and if the number of candidate single-slot resources remaining in the first set is less than the product of the total number M of the candidate single-slot resources and the second value, perform the first operation and / or the second operation; wherein the first operation includes: increasing the reference signal received power RSRP threshold by a third value; the second operation includes: increasing the first time slot in a group of time slots by a third value; The number of time slots is increased by Z1 or increased to N1, or Y is increased by Z2 or increased to N2; wherein, the group of time slots is within the first time interval, and the group of time slots includes at least Y of the first time slots Y is a positive integer.

[0250] What is actually added here with respect to the second operation is the candidate time slots.

[0251] The first condition may include at least one of the following:

[0252] The second terminal does not monitor the second time slot, and for any period value in the resource reservation period list configured by the higher layer and an assumed SCI (Sidelink Control Information) received in the second time slot, the SCI indicates all subchannels of the first time slot in the resource pool, the following step a is satisfied:

[0253] In step a, the resource blocks and time slots determined by the SCI format received in the first time slot, or assuming the same SCI format received in a third set of time slots, overlap with the resources determined by the candidate single time slot resources and the resource reservation period, wherein the second set of time slots is determined based on the first time slot and the resource reservation period indicated by the SCI;

[0254] The second terminal receives the SCI in the first time slot, and the RSRP measurement for the SCI is higher than the RSRP threshold determined according to the priority field in the SCI, and the above step a is satisfied.

[0255] Determining a set of time slots may specifically include: determining a set of candidate time slots; a first time interval of [n+T1, n+T2], which may be understood as a resource selection window; more specifically, the first terminal may determine a set of time slots within the time interval [n+T1, n+T2], where the set of time slots includes at least Y first time slots. n represents the time slot at which the higher layer triggers the first terminal to determine the resource subset.

[0256] The time slot determination method provided by the embodiment of the present invention initializes the first set to all candidate single time slot resources, excludes the single time slot resources that meet the first condition from the first set, and then performs the first operation and / or the second operation if the number of candidate single time slot resources remaining in the first set is less than the product of the total number M of the candidate single time slot resources and the second value; wherein the first operation includes: increasing the reference signal received power RSRP threshold by a third value; the second operation includes: increasing the first time slot in a group of time slots by a third value; The number of time slots is increased by Z1 or increased to N1, or Y is increased by Z2 or increased to N2; wherein, the group of time slots is within the first time interval, and the group of time slots includes at least Y of the first time slots Differentiated candidate time slot selection can be performed based on different QoS requirements and channel occupancy conditions, thereby reducing the probability of resource collision in some perception mechanisms, reducing interference, and improving data transmission reliability. This effectively solves the problem of high resource collision probability and poor reliability in the time slot confirmation scheme for sidelink resource perception and selection in the existing technology.

[0257] The second parameter value is determined by at least one of the following methods: determined by the second terminal through implementation, agreed upon by the protocol, pre-configured, configured by network-side high-level signaling, or configured by physical layer downlink control signaling; and / or the third parameter value is a fixed value, or a value corresponding to a given priority; the second parameter value includes at least one of the second value, the third value, Z1, Z2, N1 and N2; the third parameter value includes at least one of Z1, Z2, N1 and N2.

[0258] Specifically, “the second parameter value is determined by at least one of the following methods: determined by the second terminal through implementation, agreed upon by the protocol, pre-configured, configured by network-side high-layer signaling, or configured by physical layer downlink control signaling” means:

[0259] The second value is: determined by the second terminal through implementation, agreed upon by a protocol, pre-configured, configured by network-side high-layer signaling, or configured by physical layer downlink control signaling; and / or,

[0260] The third value is: determined by the second terminal through implementation, agreed upon by a protocol, pre-configured, configured by network-side high-layer signaling, or configured by physical layer downlink control signaling; and / or,

[0261] The Z1 is: determined by the second terminal through implementation, agreed upon by protocol, pre-configured, configured by network-side high-layer signaling, or configured by physical layer downlink control signaling; and / or,

[0262] The Z2 is: determined by the second terminal through implementation, agreed upon by the protocol, pre-configured, configured by network-side high-layer signaling, or configured by physical layer downlink control signaling; and / or,

[0263] The N1 is: determined by the second terminal through implementation, agreed upon by a protocol, pre-configured, configured by network-side high-layer signaling, or configured by physical layer downlink control signaling; and / or,

[0264] The N2 is: determined by the second terminal through implementation, agreed upon by a protocol, pre-configured, configured by network-side high-layer signaling, or configured by physical layer downlink control signaling.

[0265] For example, the second value is agreed upon by the protocol, and Z1 is configured by high-level signaling on the network side.

[0266] “The third parameter value is a fixed value, or a value corresponding to a given priority” means:

[0267] The Z1 is a fixed value, or a value corresponding to a given priority; and / or,

[0268] Z2 is a fixed value, or a value corresponding to a given priority; and / or,

[0269] N1 is a fixed value, or a value corresponding to a given priority; and / or,

[0270] The N2 is a fixed value, or a value corresponding to a given priority.

[0271] In the embodiment of the present invention, the performing of the first operation and / or the second operation includes: The number of time slots is increased by Z1 or increased to N1, or Y is increased by Z2 or increased to N2, or the RSRP threshold is increased by a third value, and when the total value of the RSRP threshold increase reaches a fourth value, or the total number of times the RSRP threshold is increased reaches a fifth value, the first time slot in the group of time slots is increased. Increase the number of by Z1 or increase it to N1, or increase Y by Z2 or increase it to N2.

[0272] Specifically, the third value may be 3dB; the second value, the third value, and the fourth value may be the same as or different from each other.

[0273] In an embodiment of the present invention, the fourth parameter value is determined by at least one of the following methods: determined by the second terminal through implementation, agreed upon by the protocol, pre-configured, configured by network-side high-layer signaling, or configured by physical layer downlink control signaling; and / or, the fifth parameter value is a fixed value, or a value corresponding to a given priority; wherein the fourth parameter value includes at least one of the fourth value and the fifth value; the fifth parameter value includes at least one of the fourth value and the fifth value.

[0274] Specifically, “the fourth parameter value is determined by at least one of the following methods: determined by the second terminal through implementation, agreed upon by the protocol, pre-configured, configured by network-side high-layer signaling, or configured by physical layer downlink control signaling” means:

[0275] The fourth value is: determined by the second terminal through implementation, agreed upon by a protocol, pre-configured, configured by network-side high-layer signaling, or configured by physical layer downlink control signaling; and / or,

[0276] The fifth value is: determined by the second terminal through implementation, agreed upon by protocol, pre-configured, configured by network-side high-layer signaling, or configured by physical layer downlink control signaling.

[0277] "The fifth parameter value is a fixed value, or a value corresponding to a given priority" means:

[0278] The fourth value is a fixed value, or a value corresponding to a given priority; and / or,

[0279] The fifth value is a fixed value, or a value corresponding to a given priority.

[0280] Here, Y is agreed upon by the protocol or pre-configured or configured by high-level signaling on the network side.

[0281] Specifically, the high-layer signaling may include master information block SIB signaling, radio resource control RRC signaling and / or medium access control MAC signaling.

[0282] In an embodiment of the present invention, the Y is configured in a resource pool, and / or the Y is configured for a given priority value.

[0283] Pre-configuration can also be done in "Resource Pool Configuration".

[0284] The time slot determination method provided by the embodiment of the present invention is described below with examples.

[0285] To address the above technical issues, embodiments of the present invention provide a time slot determination method, which can be specifically implemented as a partially sensed resource selection method. The method includes: 1) a method for determining a sensed time slot, which can avoid collisions with semi-statically reserved and dynamically reserved resources of other terminals; and 2) a method for determining candidate time slots, which can differentiate candidate time slot selection based on different QoS requirements and channel occupancy. This approach can reduce the probability of resource collisions in the partial sensing mechanism, minimize interference, and improve data transmission reliability.

[0286] Regarding the method for determining the above-mentioned sensing time slot:

[0287] Considering that the LTE-V2X partial sensing step is to first determine that the candidate time slots include Y time slots (i.e. the above Y first time slots ), that is, if the time slot If it is included in the candidate time slot and the corresponding high-level parameter gapCandidateSensing is set to 1, then the terminal needs to sense Any time slot in , where gap = b × Pstep; if the problem of dynamic reservation is considered, the above time slot n (which can also be understood as the resource triggering moment) or time slot should be added on the basis of LTE-V (i.e. LTE-V2X) sensing time slot The preceding X time slots or X ms (corresponding to at least one operation included in determining the time slot monitored by the first terminal), where the X time slots or X ms are typical PDB (Packet Delay Budget) values;

[0288] Specifically: If the time slot If it is included in the candidate time slots, the terminal needs to monitor at least one of the following two time slot sets:

[0289] Collection 1: any time slot in the first time slot; the gap is determined according to the reserved period configured by the network side through high-level signaling (such as RRC), or the gap is defined by the protocol; specifically corresponding to the above "when the value of the kth bit of the first indication is a preset value, determining that the first terminal monitors the first time slot m time slots of a first interval or a first step length, the first indication being used to indicate a time slot sensed or monitored by the first terminal”;

[0290] Set 2: Set 2 includes at least one of the following:

[0291] (1) Time slot Specifically corresponding to the above “determining the time slot monitored by the first terminal is from the first time slot Previous X1 time slots Start to the first time slot "within the time interval or time window before the first time T1"; where X1 = X, T1 = 0;

[0292] (2) Time slot For time a, set 2 is all time slots belonging to the SL resource pool from time aX to time a, where the unit of X is ms; specifically corresponding to the above “determining the time slot monitored by the first terminal in the first time slot The time interval or time window starting from X2 ms before the corresponding time a to the second time T2 before the time a”; where X2 = X, T2 = 0;

[0293] (3) If time slot n belongs to the SL (sidelink) resource pool, record the time slot If time slot n does not belong to the SL resource pool, then is the first time slot after time slot n in the SL resource pool, then set 2 is Specifically corresponding to the above "determining the time slot monitored by the first terminal is from the time slot The previous X3 time slots start to the time slot The time interval or time window before the third time T3; wherein, if the time slot n belongs to the bypass SL resource pool, the time slot Otherwise, the time slot "The first time slot after the time slot n in the time slots included in the SL resource pool"; where X3 = X, T3 = 0;

[0294] (4) Set 2 is all time slots belonging to the SL resource pool from time slot nX to time slot n; this corresponds to the above “determining that the time slot monitored by the first terminal is within the time interval or time window starting from X4 time slots before time slot n to T4, the fourth time before time slot n”; where X4 = X, T4 = 0;

[0295] The X can be implemented through protocol definition, pre-configuration, network side high-layer signaling configuration, and physical layer downlink control signaling configuration.

[0296] Regarding a method for determining candidate time slots:

[0297] Considering that different services have different QoS requirements or different priorities, the selection criteria for subframe Y should be different for services of different priorities. Therefore, the minNumCandidateSF parameter in this solution is changed to a per-priority, per-resource pool configuration.

[0298] Specifically: the terminal determines that the candidate time slots include at least Y time slots (ie, the Y first time slots mentioned above) by implementing ), wherein Y is greater than or equal to a first parameter of a high-level configuration, and the first parameter is a per-priority configuration (ie, Y is configured for a given priority value), or a per-resource pool configuration (ie, Y is in the resource pool configuration).

[0299] For example, the first parameter of high-priority data configuration can be larger, and the first parameter of low-priority data configuration can be smaller, so as to achieve the purpose of giving priority to the reliability of high-priority data and allowing low-priority data to avoid high-priority data;

[0300] For example, if the resource pool contains a large number of sub-channels, a smaller first parameter can be configured, that is, different terminals avoid interference more through frequency division; if the resource pool contains a small number of sub-channels, a larger first parameter can be configured, that is, different terminals avoid interference more through time division.

[0301] Further: Considering the problem that the RSRP threshold is too high due to the reduction of candidate single time slot resources in the candidate time slot, when the RSRP threshold is increased to a certain extent, the candidate time slot Y (i.e., the Y first time slots mentioned above) should be increased instead. ) to avoid the RSRP threshold from increasing continuously and causing serious interference; therefore, in this solution:

[0302] The number of all candidate single-slot resources in the candidate time slot is recorded as the total value (i.e., the total number M mentioned above), and the number of candidate single-slot resources after the resource exclusion step is recorded as the remaining value. If the remaining value is less than the total value multiplied by the second value, each configured RSRP threshold is increased by 3 dB (a specific embodiment of the third value mentioned above), and / or (the number of candidate time slots Y is increased to Y+Z2, or the number of candidate time slots Y is increased to N2). Specifically, the following implementation methods can be used:

[0303] (1) If the remaining value is less than the total value × the second value, each configured RSRP threshold is increased by 3 dB. When the RSRP threshold increases to the fourth value (dB), or the total number of increases reaches the fifth value, the number of candidate time slots Y is increased by Z2 time slots, or the number of candidate time slots Y is increased to N2.

[0304] (2) If the remaining value is less than the total value×the second value, the number of candidate time slots Y is increased by Z2 time slots, or the number of candidate time slots Y is increased to N2.

[0305] Among them, the fourth value, fifth value, Z2 and N2 involved above can be implemented through terminal implementation, protocol definition, pre-configuration, network side high-level signaling configuration and / or physical layer downlink control signaling configuration; and the fourth value, fifth value and Z2 can be fixed values, or different values ​​with different priorities (that is, values ​​corresponding to given priorities).

[0306] As can be seen from the above, the solution provided by the embodiment of the present invention effectively solves the problem in the prior art of the time slot confirmation solution for sidelink resource perception and selection that results in a high probability of resource collision and poor reliability.

[0307] The embodiment of the present invention further provides a time slot determination device, which is applied to a first terminal, such as Figure 4 As shown, the device includes:

[0308] The first determining module 41 is configured to determine a time slot monitored by the first terminal, where the time slot is determined based on at least one of the following information:

[0309] First time slot

[0310] a parameter value, wherein the parameter value includes at least one of a first value X1, a second value X2, a third value X3, and a fourth value X4;

[0311] First interval or first step length;

[0312] The higher layer triggers the first terminal to determine a time slot n of a resource subset, where the higher layer selects resources for transmitting a bypass control channel PSCCH and / or a bypass shared channel PSSCH.

[0313] The time slot determination device provided in the embodiment of the present invention determines the time slot monitored by the first terminal, and the time slot is determined according to at least one of the following information: the first time slot Parameter value, the parameter value includes at least one of a first value X1, a second value X2, a third value X3 and a fourth value X4; a first interval or a first step length; the high layer triggers the first terminal to determine the time slot n of the resource subset, and the resource subset is used by the high layer to select resources for bypass control channel PSCCH and / or bypass shared channel PSSCH transmission; it can avoid collision with semi-static reservations and dynamically reserved resources of other terminals, thereby reducing the probability of resource collision in some perception mechanisms, reducing interference, and improving the reliability of data transmission, and well solves the problem of high probability of resource collision and poor reliability in the time slot confirmation scheme for sidelink resource perception and selection in the prior art.

[0314] The parameter value is agreed upon by the protocol, or pre-configured, or configured by network-side high-level signaling or physical layer downlink control signaling; and / or the first interval or the first step length is determined based on a configured or pre-configured resource reservation period list, or agreed upon by the protocol.

[0315] In the embodiment of the present invention, the determining of the time slot monitored by the first terminal includes at least one of the following operations: when the value of the kth bit of the first indication is a preset value, determining that the first terminal monitors the first time slot The first indication is used to indicate the time slot sensed or monitored by the first terminal; determining the time slot monitored by the first terminal is m timeslots of the first interval or the first step length from the first time slot Previous X1 time slots Start to the first time slot Determine the time slot monitored by the first terminal in the time interval or time window from the first time slot The time interval or time window from X2 ms before the corresponding time a to the second time T2 before the time a; determining that the time slot monitored by the first terminal is from the time slot The previous X3 time slots start to the time slot The time interval or time window before the third time T3; wherein, if the time slot n belongs to the bypass SL resource pool, the time slot Otherwise, the time slot The first time slot after the time slot n among the time slots included in the SL resource pool; determining that the time slot monitored by the first terminal is within the time interval or time window starting from X4 time slots before time slot n to the fourth time T4 before time slot n.

[0316] In the embodiment of the present invention, the first time slot for determining the time slot monitored by the first terminal is: the first time slot in the first time interval The first or earliest one in the first time interval, or the first time slot in the first time interval Each of them.

[0317] Furthermore, the apparatus further comprises: a second determining module for determining a group of time slots; wherein the group of time slots is within a first time interval, and the group of time slots includes at least Y of the first time slots

[0318]

[0319] Here, Y is agreed upon by the protocol or pre-configured or configured by high-level signaling on the network side.

[0320] In an embodiment of the present invention, the Y is configured in a resource pool, and / or the Y is configured for a given priority value.

[0321] Furthermore, the apparatus further includes: a first processing module, configured to initialize the first set to all candidate single-slot resources, exclude the single-slot resources that meet the first condition from the first set, and if the number of candidate single-slot resources remaining in the first set is less than the product of the total number M of the candidate single-slot resources and the second value, perform the first operation and / or the second operation; wherein the first operation includes: increasing the reference signal received power RSRP threshold by a third value; the second operation includes: increasing the first time slot in the set of time slots by a third value; The number of is increased by Z1 or increased to N1, or the Y is increased by Z2 or increased to N2.

[0322] In an embodiment of the present invention, the second parameter value is determined by at least one of the following methods: determined by the first terminal through implementation, agreed upon by the protocol, pre-configured, configured by network-side high-layer signaling, or configured by physical layer downlink control signaling; and / or, the third parameter value is a fixed value, or a value corresponding to a given priority; wherein the second parameter value includes at least one of the second value, the third value, Z1, Z2, N1 and N2; the third parameter value includes at least one of Z1, Z2, N1 and N2.

[0323] The performing of the first operation and / or the second operation comprises: The number of time slots is increased by Z1 or increased to N1, or Y is increased by Z2 or increased to N2, or the RSRP threshold is increased by a third value, and when the total value of the RSRP threshold increase reaches a fourth value, or the total number of times the RSRP threshold is increased reaches a fifth value, the first time slot in the group of time slots is increased. Increase the number of by Z1 or increase it to N1, or increase Y by Z2 or increase it to N2.

[0324] In an embodiment of the present invention, the fourth parameter value is determined by at least one of the following methods: determined by the first terminal through implementation, agreed upon by the protocol, pre-configured, configured by network-side high-layer signaling, or configured by physical layer downlink control signaling; and / or, the fifth parameter value is a fixed value, or a value corresponding to a given priority; wherein the fourth parameter value includes at least one of the fourth value and the fifth value; the fifth parameter value includes at least one of the fourth value and the fifth value.

[0325] Among them, the implementation embodiments of the time slot determination method on the above-mentioned first terminal side are all applicable to the embodiments of the time slot determination device and can also achieve the same technical effects.

[0326] The embodiment of the present invention further provides a time slot determination device, which is applied to a second terminal, such as Figure 5 As shown, the device includes:

[0327] a second processing module 51, configured to initialize a first set to all candidate single-slot resources, exclude single-slot resources that meet a first condition from the first set, and then perform a first operation and / or a second operation if the number of remaining candidate single-slot resources in the first set is less than a product of a total number M of the candidate single-slot resources and a second value;

[0328] The first operation includes: increasing the reference signal received power RSRP threshold by a third value;

[0329] The second operation includes: setting a first time slot in a group of time slots Increase the number of by Z1 or to N1, or increase Y by Z2 or to N2;

[0330] The group of time slots is within a first time interval, and the group of time slots includes at least Y of the first time slots.

[0331] The time slot determination device provided in the embodiment of the present invention initializes the first set to all candidate single time slot resources, excludes the single time slot resources that meet the first condition from the first set, and then performs the first operation and / or the second operation if the number of candidate single time slot resources remaining in the first set is less than the product of the total number M of the candidate single time slot resources and the second value; wherein the first operation includes: increasing the reference signal received power RSRP threshold by a third value; the second operation includes: increasing the first time slot in a group of time slots by a third value; The number of time slots is increased by Z1 or increased to N1, or Y is increased by Z2 or increased to N2; wherein, the group of time slots is within the first time interval, and the group of time slots includes at least Y of the first time slots Differentiated candidate time slot selection can be performed based on different QoS requirements and channel occupancy conditions, thereby reducing the probability of resource collision in some perception mechanisms, reducing interference, and improving data transmission reliability. This effectively solves the problem of high resource collision probability and poor reliability in the time slot confirmation scheme for sidelink resource perception and selection in the existing technology.

[0332] The second parameter value is determined by at least one of the following methods: determined by the second terminal through implementation, agreed upon by the protocol, pre-configured, configured by network-side high-level signaling, or configured by physical layer downlink control signaling; and / or the third parameter value is a fixed value, or a value corresponding to a given priority; the second parameter value includes at least one of the second value, the third value, Z1, Z2, N1 and N2; the third parameter value includes at least one of Z1, Z2, N1 and N2.

[0333] In the embodiment of the present invention, the performing of the first operation and / or the second operation includes: The number of time slots is increased by Z1 or increased to N1, or Y is increased by Z2 or increased to N2, or the RSRP threshold is increased by a third value, and when the total value of the RSRP threshold increase reaches a fourth value, or the total number of times the RSRP threshold is increased reaches a fifth value, the first time slot in the group of time slots is increased. Increase the number of by Z1 or increase it to N1, or increase Y by Z2 or increase it to N2.

[0334] In an embodiment of the present invention, the fourth parameter value is determined by at least one of the following methods: determined by the second terminal through implementation, agreed upon by the protocol, pre-configured, configured by network-side high-layer signaling, or configured by physical layer downlink control signaling; and / or, the fifth parameter value is a fixed value, or a value corresponding to a given priority; wherein the fourth parameter value includes at least one of the fourth value and the fifth value; the fifth parameter value includes at least one of the fourth value and the fifth value.

[0335] Here, Y is agreed upon by the protocol or pre-configured or configured by high-level signaling on the network side.

[0336] In an embodiment of the present invention, the Y is configured in a resource pool, and / or the Y is configured for a given priority value.

[0337] Among them, the implementation embodiments of the time slot determination method on the second terminal side are all applicable to the embodiments of the time slot determination device and can achieve the same technical effects.

[0338] The embodiment of the present invention further provides a terminal, which is a first terminal. Figure 6 As shown, the terminal includes: a processor 61, and may also include a transceiver 62;

[0339] The processor 61 is configured to determine a time slot monitored by the first terminal, where the time slot is determined according to at least one of the following information:

[0340] First time slot

[0341] a parameter value, wherein the parameter value includes at least one of a first value X1, a second value X2, a third value X3, and a fourth value X4;

[0342] First interval or first step length;

[0343] The higher layer triggers the first terminal to determine a time slot n of a resource subset, where the higher layer selects resources for transmitting a bypass control channel PSCCH and / or a bypass shared channel PSSCH.

[0344] The terminal provided in the embodiment of the present invention determines the time slot monitored by the first terminal, and the time slot is determined according to at least one of the following information: the first time slot Parameter value, the parameter value includes at least one of a first value X1, a second value X2, a third value X3 and a fourth value X4; a first interval or a first step length; the high layer triggers the first terminal to determine the time slot n of the resource subset, and the resource subset is used by the high layer to select resources for bypass control channel PSCCH and / or bypass shared channel PSSCH transmission; it can avoid collision with semi-static reservations and dynamically reserved resources of other terminals, thereby reducing the probability of resource collision in some perception mechanisms, reducing interference, and improving the reliability of data transmission, and well solves the problem of high probability of resource collision and poor reliability in the time slot confirmation scheme for sidelink resource perception and selection in the prior art.

[0345] The parameter value is agreed upon by the protocol, or pre-configured, or configured by network-side high-level signaling or physical layer downlink control signaling; and / or the first interval or the first step length is determined based on a configured or pre-configured resource reservation period list, or agreed upon by the protocol.

[0346] In the embodiment of the present invention, the determining of the time slot monitored by the first terminal includes at least one of the following operations: when the value of the kth bit of the first indication is a preset value, determining that the first terminal monitors the first time slot The first indication is used to indicate the time slot sensed or monitored by the first terminal; determining the time slot monitored by the first terminal is m timeslots of the first interval or the first step length from the first time slot Previous X1 time slots Start to the first time slot Determine the time slot monitored by the first terminal in the time interval or time window from the first time slot The time interval or time window from X2 ms before the corresponding time a to the second time T2 before the time a; determining that the time slot monitored by the first terminal is from the time slot The previous X3 time slots start to the time slot The time interval or time window before the third time T3; wherein, if the time slot n belongs to the bypass SL resource pool, the time slot Otherwise, the time slot The first time slot after the time slot n among the time slots included in the SL resource pool; determining that the time slot monitored by the first terminal is within the time interval or time window starting from X4 time slots before time slot n to the fourth time T4 before time slot n.

[0347] In the embodiment of the present invention, the first time slot for determining the time slot monitored by the first terminal is: the first time slot in the first time interval The first or earliest one in the first time interval, or the first time slot in the first time interval Each of them.

[0348] Furthermore, the processor is further configured to: determine a group of time slots; wherein the group of time slots includes at least Y of the first time slots within a first time interval.

[0349] Here, Y is agreed upon by the protocol or pre-configured or configured by high-level signaling on the network side.

[0350] In an embodiment of the present invention, the Y is configured in a resource pool, and / or the Y is configured for a given priority value.

[0351] Furthermore, the processor is further configured to: initialize the first set to all candidate single-slot resources, exclude the single-slot resources that meet the first condition from the first set, and if the number of candidate single-slot resources remaining in the first set is less than the product of the total number M of the candidate single-slot resources and the second value, perform the first operation and / or the second operation; wherein the first operation includes: increasing the reference signal received power RSRP threshold by a third value; the second operation includes: increasing the first time slot in the set of time slots by a third value; The number of is increased by Z1 or increased to N1, or the Y is increased by Z2 or increased to N2.

[0352] In an embodiment of the present invention, the second parameter value is determined by at least one of the following methods: determined by the first terminal through implementation, agreed upon by the protocol, pre-configured, configured by network-side high-layer signaling, or configured by physical layer downlink control signaling; and / or, the third parameter value is a fixed value, or a value corresponding to a given priority; wherein the second parameter value includes at least one of the second value, the third value, Z1, Z2, N1 and N2; the third parameter value includes at least one of Z1, Z2, N1 and N2.

[0353] The performing of the first operation and / or the second operation comprises: The number of time slots is increased by Z1 or increased to N1, or Y is increased by Z2 or increased to N2, or the RSRP threshold is increased by a third value, and when the total value of the RSRP threshold increase reaches a fourth value, or the total number of times the RSRP threshold is increased reaches a fifth value, the first time slot in the group of time slots is increased. Increase the number of by Z1 or increase it to N1, or increase Y by Z2 or increase it to N2.

[0354] In an embodiment of the present invention, the fourth parameter value is determined by at least one of the following methods: determined by the first terminal through implementation, agreed upon by the protocol, pre-configured, configured by network-side high-layer signaling, or configured by physical layer downlink control signaling; and / or, the fifth parameter value is a fixed value, or a value corresponding to a given priority; wherein the fourth parameter value includes at least one of the fourth value and the fifth value; the fifth parameter value includes at least one of the fourth value and the fifth value.

[0355] Among them, the implementation embodiments of the time slot determination method on the above-mentioned first terminal side are all applicable to the embodiments of this terminal and can also achieve the same technical effects.

[0356] The embodiment of the present invention further provides a terminal, which is a second terminal. Figure 7 As shown, the terminal includes: a processor 71, and may also include a transceiver 72;

[0357] The processor 71 is configured to initialize a first set to all candidate single-slot resources, exclude single-slot resources that meet a first condition from the first set, and then perform the first operation and / or the second operation if the number of remaining candidate single-slot resources in the first set is less than the product of the total number M of the candidate single-slot resources and a second value;

[0358] The first operation includes: increasing the reference signal received power RSRP threshold by a third value;

[0359] The second operation includes: setting a first time slot in a group of time slots Increase the number of by Z1 or to N1, or increase Y by Z2 or to N2;

[0360] The group of time slots is within a first time interval, and the group of time slots includes at least Y of the first time slots.

[0361] The terminal provided in the embodiment of the present invention initializes the first set to all candidate single-slot resources, excludes the single-slot resources that meet the first condition from the first set, and if the number of candidate single-slot resources remaining in the first set is less than the product of the total number M of the candidate single-slot resources and the second value, performs the first operation and / or the second operation; wherein the first operation includes: increasing the reference signal received power RSRP threshold by a third value; the second operation includes: increasing the first time slot in a group of time slots The number of time slots is increased by Z1 or increased to N1, or Y is increased by Z2 or increased to N2; wherein, the group of time slots is within the first time interval, and the group of time slots includes at least Y of the first time slots Differentiated candidate time slot selection can be performed based on different QoS requirements and channel occupancy conditions, thereby reducing the probability of resource collision in some perception mechanisms, reducing interference, and improving data transmission reliability. This effectively solves the problem of high resource collision probability and poor reliability in the time slot confirmation scheme for sidelink resource perception and selection in the existing technology.

[0362] The second parameter value is determined by at least one of the following methods: determined by the second terminal through implementation, agreed upon by the protocol, pre-configured, configured by network-side high-level signaling, or configured by physical layer downlink control signaling; and / or the third parameter value is a fixed value, or a value corresponding to a given priority; the second parameter value includes at least one of the second value, the third value, Z1, Z2, N1 and N2; the third parameter value includes at least one of Z1, Z2, N1 and N2.

[0363] In the embodiment of the present invention, the performing of the first operation and / or the second operation includes: The number of time slots is increased by Z1 or increased to N1, or Y is increased by Z2 or increased to N2, or the RSRP threshold is increased by a third value, and when the total value of the RSRP threshold increase reaches a fourth value, or the total number of times the RSRP threshold is increased reaches a fifth value, the first time slot in the group of time slots is increased. Increase the number of by Z1 or increase it to N1, or increase Y by Z2 or increase it to N2.

[0364] In an embodiment of the present invention, the fourth parameter value is determined by at least one of the following methods: determined by the second terminal through implementation, agreed upon by the protocol, pre-configured, configured by network-side high-layer signaling, or configured by physical layer downlink control signaling; and / or, the fifth parameter value is a fixed value, or a value corresponding to a given priority; wherein the fourth parameter value includes at least one of the fourth value and the fifth value; the fifth parameter value includes at least one of the fourth value and the fifth value.

[0365] Here, Y is agreed upon by the protocol or pre-configured or configured by high-level signaling on the network side.

[0366] In an embodiment of the present invention, the Y is configured in a resource pool, and / or the Y is configured for a given priority value.

[0367] Among them, the implementation embodiments of the time slot determination method on the above-mentioned second terminal side are all applicable to the embodiments of this terminal and can also achieve the same technical effects.

[0368] An embodiment of the present invention also provides a terminal, comprising a memory, a processor, and a program stored on the memory and runnable on the processor; when the processor executes the program, the time slot determination method on the first terminal side mentioned above is implemented; or, when the processor executes the program, the time slot determination method on the second terminal side mentioned above is implemented.

[0369] Among them, the implementation embodiments of the time slot determination method on the first terminal side or the second terminal side are all applicable to the embodiments of the terminal and can also achieve the corresponding same technical effects.

[0370] An embodiment of the present invention also provides a readable storage medium having a program stored thereon, which, when executed by a processor, implements the steps in the above-mentioned method for determining the time slot on the first terminal side; or, when executed by a processor, implements the steps in the above-mentioned method for determining the time slot on the second terminal side.

[0371] Among them, the implementation embodiments of the time slot determination method on the first terminal side or the second terminal side are all applicable to the embodiments of the readable storage medium and can also achieve the corresponding same technical effects.

[0372] It should be noted that many functional components described in this specification are referred to as modules in order to more particularly emphasize the independence of their implementation methods.

[0373] In embodiments of the present invention, modules can be implemented in software so that they can be executed by various types of processors. For example, an identified executable code module can include one or more physical or logical blocks of computer instructions, for example, which can be constructed as objects, procedures, or functions. Nevertheless, the executable code of the identified module does not need to be physically located together, but can include different instructions stored in different locations, which, when logically combined together, constitute the module and achieve the specified purpose of the module.

[0374] In fact, executable code module can be a single instruction or many instructions, and can even be distributed on a plurality of different code segments, distributed in the middle of different programs, and distributed across a plurality of memory devices.Similarly, operating data can be identified in the module, and can be implemented and organized in the data structure of any appropriate type according to any appropriate form.Described operating data can be collected as a single data set, or can be distributed in different locations (including on different storage devices), and can only be present on a system or network as an electronic signal at least in part.

[0375] When a module can be implemented using software, given the current state of hardware technology, those skilled in the art can build corresponding hardware circuits to implement the corresponding functions of the module, regardless of cost. The hardware circuits may include conventional very large scale integration (VLSI) circuits or gate arrays, as well as existing semiconductors such as logic chips and transistors, or other discrete components. Modules may also be implemented using programmable hardware devices, such as field programmable gate arrays, programmable array logic, or programmable logic devices.

[0376] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary personnel in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A time slot determination method, applied to a first terminal, characterized in that: The method comprises: Determine a time slot monitored by the first terminal, where the time slot is determined based on at least one of the following information: First time slot a parameter value, wherein the parameter value includes at least one of a first value X1, a second value X2, a third value X3, and a fourth value X4; First interval or first step length; The higher layer triggers the first terminal to determine a time slot n of a resource subset, where the higher layer selects resources for transmitting a bypass control channel PSCCH and / or a bypass shared channel PSSCH; The determining of the time slot monitored by the first terminal includes at least one of the following operations: When the value of the kth bit of the first indication is a preset value, it is determined that the first terminal monitors the first time slot. m time slots of the first interval or the first step length are spaced apart, and the first indication is used to indicate the time slots sensed or monitored by the first terminal; Determine the time slot monitored by the first terminal from the first time slot Previous X1 time slots Start to the first time slot within the time interval or time window before the first time T1; Determine the time slot monitored by the first terminal from the first time slot The time interval or time window starting from X2 ms before the corresponding time a to the second time T2 before the time a; Determine that the time slot monitored by the first terminal is in the slave time slot The previous X3 time slots start to the time slot The time interval or time window before the third time T3; wherein, if the time slot n belongs to the bypass SL resource pool, the time slot Otherwise, the time slot The first time slot after the time slot n among the time slots included in the SL resource pool; Determining that the time slot monitored by the first terminal is within a time interval or time window starting from X4 time slots before time slot n to a fourth time T4 before time slot n; Among them, the first time slot used to determine the time slot monitored by the first terminal is: the first time slot in the first time interval The first or earliest one in the first time interval, or the first time slot in the first time interval Each of them.

2. The time slot determination method according to claim 1, wherein: The parameter value is agreed upon by the protocol, or pre-configured, or configured by network-side high-layer signaling, or configured by physical layer downlink control signaling; and / or, The first interval or the first step length is determined according to a configured or preconfigured resource reservation period list, or is agreed upon by a protocol.

3. The time slot determination method according to any one of claims 1 to 2, characterized in that: The method further comprises: Determine a group of time slots; wherein, the group of time slots is within a first time interval, and the group of time slots includes at least Y of the first time slots .

4. The time slot determination method according to claim 3, characterized in that: The Y is agreed upon in the protocol or pre-configured or configured by high-layer signaling on the network side.

5. The time slot determination method according to claim 3, wherein: Said Y is in a resource pool configuration, and / or, said Y is configured for a given priority value.

6. The time slot determination method according to claim 3, characterized in that: The method further comprises: Initializing a first set to all candidate single-slot resources, excluding single-slot resources that meet a first condition from the first set, and then performing the first operation and / or the second operation if the number of remaining candidate single-slot resources in the first set is less than the product of the total number M of the candidate single-slot resources and a second value; The first operation includes: increasing the reference signal received power RSRP threshold by a third value; The second operation includes: setting the first time slot in the group of time slots The number of is increased by Z1 or increased to N1, or the Y is increased by Z2 or increased to N2.

7. The time slot determination method according to claim 6, characterized in that: The second parameter value is determined by at least one of the following methods: determined by the first terminal through implementation, agreed upon by a protocol, pre-configured, configured by network-side high-layer signaling, or configured by physical layer downlink control signaling; and / or, the third parameter value is a fixed value, or a value corresponding to a given priority; The second parameter value includes at least one of the second value, the third value, Z1, Z2, N1 and N2; The third parameter value includes at least one of Z1, Z2, N1 and N2.

8. The time slot determination method according to claim 6, characterized in that: The performing of the first operation and / or the second operation includes: The first time slot in the set of time slots The number of is increased by Z1 or increased to N1, or, Increase Y by Z2 or to N2, or, The RSRP threshold is increased by a third value, and when the total value of the RSRP threshold increase reaches a fourth value, or the total number of times the RSRP threshold is increased reaches a fifth value, the first time slot in the group of time slots is increased. Increase the number of by Z1 or increase it to N1, or increase Y by Z2 or increase it to N2.

9. The time slot determination method according to claim 8, characterized in that: The fourth parameter value is determined by at least one of the following methods: determined by the first terminal through implementation, agreed upon by the protocol, pre-configured, configured by network side high-layer signaling, or configured by physical layer downlink control signaling; and / or, The fifth parameter value is a fixed value, or a value corresponding to a given priority; Wherein, the fourth parameter value includes at least one of the fourth value and the fifth value; The fifth parameter value includes at least one of the fourth value and the fifth value.

10. A time slot determination device, applied to a first terminal, characterized in that: The device comprises: A first determining module is configured to determine a time slot monitored by the first terminal, where the time slot is determined based on at least one of the following information: First time slot ; a parameter value, wherein the parameter value includes at least one of a first value X1, a second value X2, a third value X3, and a fourth value X4; First interval or first step length; The higher layer triggers the first terminal to determine a time slot n of a resource subset, where the higher layer selects resources for transmitting a bypass control channel PSCCH and / or a bypass shared channel PSSCH; The determining of the time slot monitored by the first terminal includes at least one of the following operations: When the value of the kth bit of the first indication is a preset value, it is determined that the first terminal monitors the first time slot. m time slots of the first interval or the first step length are spaced apart, and the first indication is used to indicate the time slots sensed or monitored by the first terminal; Determine the time slot monitored by the first terminal from the first time slot Previous X1 time slots Start to the first time slot within the time interval or time window before the first time T1; Determine the time slot monitored by the first terminal from the first time slot The time interval or time window starting from X2 ms before the corresponding time a to the second time T2 before the time a; Determine that the time slot monitored by the first terminal is in the slave time slot The previous X3 time slots start to the time slot The time interval or time window before the third time T3; wherein, if the time slot n belongs to the bypass SL resource pool, the time slot Otherwise, the time slot The first time slot after the time slot n among the time slots included in the SL resource pool; Determining that the time slot monitored by the first terminal is within a time interval or time window starting from X4 time slots before time slot n to a fourth time T4 before time slot n; Among them, the first time slot used to determine the time slot monitored by the first terminal is: the first time slot in the first time interval The first or earliest one in the first time interval, or the first time slot in the first time interval Each of them.

11. The time slot determination device according to claim 10, characterized in that: The parameter value is agreed upon by the protocol, or pre-configured, or configured by network-side high-layer signaling, or configured by physical layer downlink control signaling; and / or, The first interval or the first step length is determined according to a configured or preconfigured resource reservation period list, or is agreed upon by a protocol.

12. The time slot determination device according to any one of claims 10 to 11, characterized in that: The device further comprises: The second determining module is configured to determine a group of time slots; wherein the group of time slots is within a first time interval, and the group of time slots includes at least Y of the first time slots. .

13. The time slot determination device according to claim 12, characterized in that: The Y is agreed upon in the protocol or pre-configured or configured by high-layer signaling on the network side.

14. The time slot determination device according to claim 12, characterized in that: Said Y is in a resource pool configuration, and / or, said Y is configured for a given priority value.

15. The time slot determination device according to claim 12, characterized in that: The device further comprises: a first processing module, configured to initialize a first set to all candidate single-slot resources, exclude single-slot resources that meet a first condition from the first set, and then perform a first operation and / or a second operation if the number of remaining candidate single-slot resources in the first set is less than a product of a total number M of the candidate single-slot resources and a second value; The first operation includes: increasing the reference signal received power RSRP threshold by a third value; The second operation includes: setting the first time slot in the group of time slots The number of is increased by Z1 or increased to N1, or the Y is increased by Z2 or increased to N2.

16. The time slot determination device according to claim 15, characterized in that The second parameter value is determined by at least one of the following methods: determined by the first terminal through implementation, agreed upon by a protocol, pre-configured, configured by network-side high-layer signaling, or configured by physical layer downlink control signaling; and / or, the third parameter value is a fixed value, or a value corresponding to a given priority; The second parameter value includes at least one of the second value, the third value, Z1, Z2, N1 and N2; The third parameter value includes at least one of Z1, Z2, N1 and N2.

17. The time slot determination device according to claim 15, characterized in that: The performing of the first operation and / or the second operation includes: The first time slot in the set of time slots The number of is increased by Z1 or increased to N1, or, Increase Y by Z2 or to N2, or, The RSRP threshold is increased by a third value, and when the total value of the RSRP threshold increase reaches a fourth value, or the total number of times the RSRP threshold is increased reaches a fifth value, the first time slot in the group of time slots is increased. Increase the number of by Z1 or increase it to N1, or increase Y by Z2 or increase it to N2.

18. The time slot determination device according to claim 17, characterized in that: The fourth parameter value is determined by at least one of the following methods: determined by the first terminal through implementation, agreed upon by the protocol, pre-configured, configured by network side high-layer signaling, or configured by physical layer downlink control signaling; and / or, The fifth parameter value is a fixed value, or a value corresponding to a given priority; Wherein, the fourth parameter value includes at least one of the fourth value and the fifth value; The fifth parameter value includes at least one of the fourth value and the fifth value.

19. A terminal, the terminal being a first terminal, characterized in that: The terminal includes: a processor; The processor is configured to determine a time slot monitored by the first terminal, where the time slot is determined according to at least one of the following information: First time slot ; a parameter value, wherein the parameter value includes at least one of a first value X1, a second value X2, a third value X3, and a fourth value X4; First interval or first step length; The higher layer triggers the first terminal to determine a time slot n of a resource subset, where the higher layer selects resources for transmitting a bypass control channel PSCCH and / or a bypass shared channel PSSCH; The determining of the time slot monitored by the first terminal includes at least one of the following operations: When the value of the kth bit of the first indication is a preset value, it is determined that the first terminal monitors the first time slot. m time slots of the first interval or the first step length are spaced apart, and the first indication is used to indicate the time slots sensed or monitored by the first terminal; Determine the time slot monitored by the first terminal from the first time slot Previous X1 time slots Start to the first time slot within the time interval or time window before the first time T1; Determine the time slot monitored by the first terminal from the first time slot The time interval or time window starting from X2 ms before the corresponding time a to the second time T2 before the time a; Determine that the time slot monitored by the first terminal is in the slave time slot The previous X3 time slots start to the time slot The time interval or time window before the third time T3; wherein, if the time slot n belongs to the bypass SL resource pool, the time slot Otherwise, the time slot The first time slot after the time slot n among the time slots included in the SL resource pool; Determining that the time slot monitored by the first terminal is within a time interval or time window starting from X4 time slots before time slot n to a fourth time T4 before time slot n; Among them, the first time slot used to determine the time slot monitored by the first terminal is: the first time slot in the first time interval The first or earliest one in the first time interval, or the first time slot in the first time interval Each of them.

20. A terminal comprising a memory, a processor, and a program stored in the memory and executable on the processor; characterized in that: When the processor executes the program, the time slot determination method according to any one of claims 1 to 9 is implemented.

21. A readable storage medium having a program stored thereon, characterized in that: When the program is executed by a processor, the steps of the time slot determination method according to any one of claims 1 to 9 are implemented.

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