WO2022237455A1 - 直通链路资源选择方法、装置及用户设备 - Google Patents
直通链路资源选择方法、装置及用户设备 Download PDFInfo
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Definitions
- the present disclosure relates to the technical field of direct link communication, and in particular, to a method, device and user equipment for selecting direct link resources.
- V2X Vehicle to Everything
- V2V Vehicle to Vehicle
- V2I Vehicle to Infrastructure
- V2I Vehicle to Person
- V2P Vehicle to Pedestrian
- V2N Vehicle to Network
- the direct connection communication technology is also applicable to other scenarios, such as direct connection communication between smart terminals.
- the basic mechanism of resource allocation in related technologies is that the user equipment (User Equipment, UE) learns about the resource occupancy of other UEs and the subsequent resource occupancy in real time through continuous real-time sensing.
- UE User Equipment
- the appropriate idle resource to send according to the known resource occupancy situation, and for the direct connection communication scenario with power saving requirements, such as Pedestrian to Vehicle (Pedestrian to Vehicle, P2V) communication in V2P or hand-held terminal Person-to-person (Pedestrian to Pedestrian, P2P) communication needs to redefine the specific process of resource selection methods under power-saving requirements.
- P2V Pedestrian to Vehicle
- P2P hand-held terminal Person-to-person
- the purpose of the embodiments of the present disclosure is to provide a direct link resource selection method, device and user equipment, so as to solve the problem in the related art that there is no specific process of redefining the resource selection method under the power saving requirement.
- an embodiment of the present disclosure provides a resource selection method, which is applied to a user equipment, and the method includes:
- the method further includes: when the service package arrives or the service package is about to arrive, determining whether to perform partial sensing; and/or, determining a timing of partial sensing.
- determining whether to perform partial sensing includes:
- determining whether to perform partial sensing includes:
- Partial awareness is determined to be performed in any of the following cases:
- the preemption configuration information is enabled
- the preemption configuration information is a priority threshold
- the preemption configuration information is enabled and the priority of the service package is determined to be not the highest priority
- the preemption configuration information is a priority threshold and the priority of the service package is determined to be not the highest priority.
- determining whether to perform partial sensing includes:
- Preemption configuration information is not provided or configured
- the preemption configuration information is disabled
- the preemption configuration information is enabled and the priority of the service package is determined to be the highest priority
- the preemption configuration information is a priority threshold and the priority of the service package is determined to be the highest priority.
- determine the timing of partial perception including:
- the first set of candidate resources includes any of the following:
- Y time-domain candidate resources determined during resource selection/reselection map according to the resource reservation period, and obtain Y time-domain candidates after the arrival time of the service package and closest to the arrival time of the service package resource.
- determining the resources for performing the partial sensing includes:
- the resource for performing the partial sensing is the resource of the latest period before the first moment and corresponding to the first candidate resource set;
- the first moment is any of the following:
- a set of periodic values corresponding to periodic partial perception needs to be performed, including:
- the period value set is determined according to the resource reservation period list information included in the resource pool configuration parameters.
- the period value indicated by the period value parameter is part or all of the period value indicated by the resource reservation period list included in the resource pool configuration parameter.
- the method also includes:
- the resource selection triggering moment is any of the following:
- the leading time of the first resource selection window is , and the trailing time of the first resource selection window is;
- the leading time of the first resource selection window is, and the trailing time of the first resource selection window is;
- n is the service packet arrival time, determines the parameters for the front edge of the resource selection window, and determines the parameters for the resource selection window rear edge.
- the method further includes:
- the resource selection check time is any of the following:
- the method also includes:
- Persistent partial sensing is performed before said resource selection check moment.
- the method also includes:
- the method also includes:
- Resource selection is performed within the second resource selection window.
- leading moment of the second resource selection window is, and the trailing moment of the second resource selection window is;
- the reference time for the resource selection window the parameters are determined for the front edge of the resource selection window, and the parameters are determined for the rear edge of the resource selection window;
- the resource selection window reference time is any of the following:
- the method also includes:
- the second moment is any of the following:
- an embodiment of the present disclosure further provides a user equipment, including: a transceiver, a memory, a processor, and a computer program stored in the memory and running on the processor, and the processor executes the The resource selection method as described in the first aspect is realized when the above computer program is used.
- an embodiment of the present disclosure further provides a resource selection apparatus, which is applied to a user equipment, including:
- the first determining module is configured to determine whether resource selection/reselection needs to be triggered when a service package arrives or the service package is about to arrive.
- an embodiment of the present disclosure further provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the resource selection method as described in the first aspect is implemented.
- the resource selection method in the embodiment of the present disclosure determines whether resource selection/reselection needs to be triggered when a service package arrives or the service package is about to arrive. Solve the problem that there is currently no definition of the specific process of the resource selection method under the power-saving demand, and realize the resource selection/reselection triggering when the resource service package arrives or the service package is about to arrive under the power-saving mechanism during the resource allocation process The clarity of the determination process realizes the standardization of the resource allocation process.
- FIG. 1 is a schematic flowchart of a resource selection method in an embodiment of the present disclosure
- FIG. 2 is a schematic diagram of the positional relationship between the arrival time of a service packet and the first candidate resource in the related art
- Fig. 3 is one of the schematic diagrams of the perception of the execution part of the embodiment of the present disclosure.
- FIG. 4 is the second schematic diagram of perception of the execution part of the embodiment of the present disclosure.
- FIG. 5 is a schematic diagram of performing partial sensing when the period value parameter is not obtained in an embodiment of the present disclosure
- FIG. 6 is a schematic diagram of performing partial sensing when periodic parameters are obtained in an embodiment of the present disclosure
- FIG. 7 is a schematic diagram of executing resource exclusion at the moment of resource selection check in an embodiment of the present disclosure
- Fig. 8 is one of the schematic diagrams of performing continuous sensing before the resource selection check time in the embodiment of the present disclosure
- FIG. 9 is a second schematic diagram of performing continuous sensing before the resource selection check time in an embodiment of the present disclosure.
- FIG. 10 is a schematic structural diagram of a resource selection device according to an embodiment of the present disclosure.
- Fig. 11 is a schematic structural diagram of a user equipment according to an embodiment of the present disclosure.
- sequence numbers of the following processes do not mean the order of execution, and the execution order of each process should be determined by its functions and internal logic, and should not be implemented in the present disclosure.
- the implementation of the examples constitutes no limitation.
- B corresponding to A means that B is associated with A, and B can be determined according to A.
- determining B according to A does not mean determining B only according to A, and B may also be determined according to A and/or other information.
- LTE-V2X supports a partial perception mechanism based on periodic service transmission.
- the UE determines a resource selection window [n+T1, n+T2] containing at least Y subframes, where T1, T2 The determination of depends on the UE implementation, but it needs to satisfy T 1 ⁇ 4, 20 ⁇ T 2 ⁇ 100 and the determination of T2 needs to meet the transmission delay requirement, and Y needs to be greater than or equal to the high-level parameter MinNumCandidateSF.
- the UE needs to monitor subframe, and obtain the perception result. See Table 1 below for values of P step in different time division duplexing (Time Division Duplexing, TDD) configurations or intelligent traffic system (Intelligent Traffic System, ITS) dedicated frequency bands.
- TDD Time Division Duplexing
- ITS Intelligent Traffic System
- the sensing window can be a logical time slot (slot) within 1100ms or 100ms according to the resource pool configuration, and the resource selection window is [n+T1, n +T2], the determination of T1 and T2 depends on the UE implementation and needs to meet the conditions:
- T2min determined according to the high-level parameter sl-SelectionWindowList, if T2min is less than the remaining delay budget of the service package, then T2min ⁇ T2 ⁇ the remaining delay budget of the service package (slot granularity representation); otherwise T2 is determined as the service package Remaining delay budget (slot granularity representation).
- an embodiment of the present disclosure provides a resource selection method, which is applied to a user equipment, and the resource selection method includes:
- Step 101 when a service package arrives or is about to arrive, determine whether resource selection/reselection needs to be triggered.
- the resource selection mode of the user equipment is based on partial sensing, specifically, the user equipment may determine to perform resource selection based on partial sensing, or be (pre)configured to perform resource selection based on partial sensing, Or meet the trigger conditions of partial perception and determine to execute resource selection based on partial perception; both, the service package is a periodic service package, and the UE can predict the arrival time of the service package in advance, for example, when a service package arrives, the UE can predict the next A service packet will arrive one cycle later than the current arrival time. Therefore, the above steps can be performed at the arrival time of the service package or when it is about to arrive, and the specific time for performing the above steps can be determined by the UE itself.
- the resource selection method in the embodiments of the present disclosure is applicable to the technical field of direct communication, wherein a typical application scenario of the direct communication technology is a direct communication scenario of the Internet of Vehicles, and of course, other direct communication scenarios may also be included.
- the description of the arrival of the service package is expressed from a specific level, which is related to "direct link data available", “media access control protocol data unit (Media Access Control Protocol Data Unit, MAC PDU) available", “transmission Block available” and other expressions are equivalent, and the imminent arrival of service packets can be related to "expected direct link data will be available", “expected MAC PDU will be available”, “expected transmission block will be available”, “expected direct link data will be available in the current direct link Expressions such as “the expected MAC PDU will be available one cycle after the current MAC DPU is available”, “the expected transport block will be available one cycle after the current transport block is available” are equivalent.
- the user equipment determines whether resource selection/reselection needs to be triggered when the service package arrives or is about to arrive, which solves the problem that there is currently no specific process for the resource selection method under the power saving requirement.
- the problem of the definition of resource allocation has realized the clarification of the determination process of triggering resource selection/reselection when the resource service package arrives or the service package is about to arrive under the power-saving mechanism in the process of resource allocation, and the standardization of the resource allocation process is realized.
- V2X devices that cannot ensure continuous and sufficient power supply for pedestrians (such as Pedestrian User Equipment (P-UE), also known as Vulnerable Road Users (VRU) ), or when energy saving is required (such as insufficient vehicle endurance or roadside equipment does not have to continue to work when the number of vehicles is small), the UE power saving mechanism needs to be considered in the above cases.
- P-UE Pedestrian User Equipment
- VRU Vulnerable Road Users
- 3GPP Release 14 defines a partial sensing mechanism for periodic service transmission.
- the UE determines no less than gapCandidateSensing candidates according to the resource selection window.
- Y subframes of the resource each denoted as
- the UE since the UE can predict the arrival time of the service packet in advance, the UE has already performed part of the sensing and listening to the Subframes, acquisition of sensing results, k is determined according to the high-level signaling gapCandidateSensing, corresponding to the case where the kth bit of gapCandidateSensing is 1.
- NR-V2X New Radio-Vehicle to Everything, NR-V2X
- the power saving mechanism also needs to consider Discontinuous Reception (DRX).
- DRX Discontinuous Reception
- the determination of Y time-domain resources depends on the implementation.
- the UE may determine Y candidate time-domain resources at a later position in the resource selection window.
- Evolution-Vehicle to Everything, LTE-V2X) partial sensing mechanism the time interval between n time after n time and the first candidate time domain resource y0 may be relatively large (as shown in Figure 2), this part of the sensing results The absence of will lead to a decrease in transmission reliability.
- the UE will continue to sense for a long time after n time, for example, it may reach 200ms, and the power consumption will be significantly increased at this time.
- PDB Packet Delay Budget
- the method also includes:
- a service package arrives or is about to arrive, by determining whether to perform partial sensing on the service package, it is realized to determine to perform partial sensing for each service package arriving in the periodic service package, Alternatively, partial sensing is only performed on some of the periodic service packets; compared to the current partial sensing timing being the arrival time of the service package, the embodiments of the present disclosure can also determine the timing of the service packet arrival and the first The resources between the candidate time-domain resources are sensed, which reduces the problem of data transmission reliability degradation caused by the lack of necessary sensing results.
- determine whether to perform partial perception including:
- whether to trigger resource selection/reselection for the service package can be determined according to the provisions of Section 5.22.1.2 of 3GPP TS 38.321; In the case where resource selection needs to be triggered for the service package, partial sensing needs to be performed; if it is determined that resource selection does not need to be triggered for the service package according to 3GPP TS 38.321 Section 5.22.1.2, then the resource pool can be further preempted configuration information, or determine whether to perform partial sensing according to the preemption configuration information and the priority of the service package.
- the partial sensing mechanism in related technologies does not involve re-evaluation or preemption-related processing, so there is no technical problem of judging whether to execute partial sensing when a service package arrives but does not need to trigger resource selection/reselection . Therefore, in this optional implementation manner, it is determined whether to perform partial sensing in combination with the preemption configuration information, which realizes the maximum energy saving of the UE and meets the requirements of the UE power saving mechanism.
- determining whether to perform partial sensing includes:
- Partial awareness is determined to be performed in any of the following cases:
- the preemption configuration information is enable (enable);
- the preemption configuration information is a priority threshold
- the preemption configuration information is enabled and the priority of the service package is determined to be not the highest priority
- the preemption configuration information is a priority threshold and the priority of the service package is determined to be not the highest priority.
- the priority of the service package to arrive can be based on the priority of the service package that is adjacent to the service package that will arrive this time in the periodic service package.
- the priority of the service packet arriving last time is determined.
- the UE determines that it needs to perform partial sensing; or, when the UE determines that the preemption configuration information of the resource pool is the priority threshold In the case of , the UE determines that it needs to perform partial sensing; or, when the UE determines that the preemption configuration information of the resource pool is enable, and further determines that the priority of the service package is not the highest priority, the UE determines that it needs to perform partial sensing; or, When the UE determines that the preemption configuration information of the resource pool is the priority threshold, and further determines that the priority of the service package is not the highest priority, the UE determines that partial sensing needs to be performed.
- the process of checking at this time can adopt the method of determining to perform resource selection on the service package in this disclosure. /reselection, the method used to remove the resource selection step in the process.
- FIG. 4 it is the second schematic diagram of performing partial sensing in the embodiment of the present disclosure, wherein FIG. 4 shows that when the preemption configuration information is enabled or the priority threshold value (specific priority value) and the UE sends a service Schematic diagram of performing partial perception when the packet priority is not the highest priority.
- the dotted box in Figure 4 shows that no resource reselection is performed on the service packets expected to arrive at time n+p, the preemption configuration information is enable or a specific priority value, and the service sent by the UE is not the highest priority, execute Part perception.
- determining whether to perform partial sensing includes:
- Preemption configuration information is not provided or configured; that is: sl-PreemptionEnable-r16 is not configured or not provided;
- the preemption configuration information is disabled (disable);
- the preemption configuration information is enabled and the priority of the service package is determined to be the highest priority
- the preemption configuration information is a priority threshold and the priority of the service package is determined to be the highest priority.
- the priority of the service package to arrive can be determined according to the priority of the previously arriving service package adjacent to the service package that will arrive this time .
- FIG. 3 it is one of the schematic diagrams of performing partial sensing in the embodiment of the present disclosure; wherein, FIG. 3 shows that partial sensing is not performed when no preemption configuration information is provided or configured or the UE transmits the highest traffic. Specifically, the dotted box in Figure 3 shows that no resource reselection is performed on the service packets expected to arrive at time n+p, no preemption configuration information is provided or configured, or the UE sends the highest service, no execution Part perception.
- the above optional implementation and the two specific implementations realize that when the periodic service packet transmission is determined in combination with the preemption configuration information, partial sensing is performed on each arriving service packet or only partial sensing is performed on some service packets, realizing UE Maximum power saving.
- determine some sensing opportunities including:
- the first set of candidate resources includes any of the following:
- Y time-domain candidate resources determined during resource selection/reselection map according to the resource reservation period, and obtain Y time-domain candidates after the arrival time of the service package and closest to the arrival time of the service package resource.
- the Y time-domain candidate resources may be predetermined time-domain candidate resources, or may be resources mapped according to the Y time-domain candidate resources determined during resource selection/reselection.
- the UE uses the predetermined Y time-domain candidate resources for resource selection/reselection to be performed, or the Y time-domain candidate resources determined when the UE performs resource selection/reselection last time, corresponding
- the periodic value set corresponding to the periodic partial sensing needs to be performed to determine the resources for performing partial sensing. In this way, the arrival time of the service package to the first candidate can be realized.
- the determined resource for performing partial sensing may be one or more periods of periodic partial sensing resources that are determined according to the sl-ResourceReservePeriodList-r16 parameter and located before the Y candidate resources in the time domain.
- determining the resource for performing the partial sensing includes:
- the resource for performing the partial sensing is the resource of the latest period before the first moment and corresponding to the first candidate resource set;
- the first moment is any of the following:
- ty0 can be represented by the basic time unit supported by the system, such as the physical time slot or logical time slot in NR-V2X Release 16 or the time slot in the resource pool.
- the processing delay may be determined by at least one of the sensing result processing time Tproc,0, resource selection and sending time Tproc,1, and resource selection window frontier determination parameter T1.
- the processing delay can be any of the following:
- the processing delay can also be a time unit, and the time unit can be Orthogonal Frequency Division Multiplexing (Orthogonal Frequency Division Multiplexing, OFDM) symbol, physical time slot , logical time slot, time slot in the resource pool, physical subframe, logical subframe or subframe in the resource pool, ms, etc.;
- OFDM Orthogonal Frequency Division Multiplexing
- Tproc, 0, Tproc, 1, and T1 in the above formula are all time units defined by the through link, such as OFDM symbols, physical time slots, logical time slots, time slots in resource pools, physical subframes, Logical subframe or subframe, ms, etc. in the resource pool.
- Partial sensing is performed on the resources between time intervals of a candidate time-domain resource, which avoids the phenomenon that the reliability of data transmission is reduced due to the lack of sensing results.
- the periodic value set corresponding to the periodic partial awareness needs to be implemented, including:
- the period value set is determined according to the resource reservation period list information included in the resource pool configuration parameters. In this way, the determination of the timing of the partial sensing can be realized without introducing new periodic configuration signaling dedicated to the partial sensing.
- the dedicated signaling for partial sensing when the UE determines a specific partial sensing opportunity, if the dedicated signaling for partial sensing is configured, the dedicated signaling is used to determine the set of periodic values; if the dedicated signaling is not configured, it is configured according to the resource pool Supported period value execution.
- the period value indicated by the period value parameter is part or all of the period value indicated by the resource reservation period list contained in the resource pool configuration parameter.
- the resources performing partial awareness may be the same as the resources supported by the resource pool for periodic partial awareness, or be a part of the resources supported by the resource pool for periodic partial awareness.
- the resource selection method in the embodiment of the present disclosure by determining the partial sensing timing according to the first time when performing partial sensing, realizes resource sensing between the arrival time of the service package and the time where the first candidate time-domain resource is located, avoiding It eliminates the phenomenon that the reliability of data transmission is reduced due to the lack of necessary sensing results, and ensures the reliability of transmission.
- the method also includes:
- Step 1 Determine the first resource selection window at the triggering moment of resource selection
- Step 2 performing resource selection within the first resource selection window
- the resource selection triggering moment is any of the following:
- ty0 can be represented by the basic time unit supported by the system, such as the physical time slot or logical time slot in NR-V2X Release 16 or the time slot in the resource pool.
- the processing delay may be determined by at least one of the sensing result processing time Tproc,0, resource selection and sending time Tproc,1, and resource selection window frontier determination parameter T1.
- the processing delay can be any of the following: Tproc, 1; T1; Tproc, 0+Tproc, 1; Tproc, 0+T1; Tproc, 1+1; T1+1; (Tproc, 0+Tproc , 1)+1; (Tproc, 0+T1)+1; wherein, "1" in the above formula is a time unit, therefore, the processing delay can also be a time unit, and the time unit can be OFDM symbol, physical Time slot, logical time slot, time slot in resource pool, physical subframe, logical subframe or subframe in resource pool, ms, etc.
- Tproc, 0, Tproc, 1, and T1 in the above formula are all time units defined by the through link, such as OFDM symbols, physical time slots, logical time slots, time slots in resource pools, physical subframes, Logical subframe or subframe, ms, etc. in the resource pool.
- the leading time of the first resource selection window is m+T1, and the trailing time of the first resource selection window is m+T2; or, the leading time of the first resource selection window is n+T1, the trailing edge time of the first resource selection window is n+T2; wherein, m is the resource selection trigger time, n is the arrival time of the service packet, T1 is the front edge determination parameter of the resource selection window, and T2 is the resource selection The rear edge of the window determines the parameters.
- the resource selection trigger time is the arrival time of the service packet, it is determined that the leading time of the first resource selection window is n+T1, and the trailing time of the first resource selection window is n+T2 ;
- the resource selection trigger time is not the arrival time of the service packet, determine that the leading time of the first resource selection window is m+T1, and the trailing time of the first resource selection window is m+T2; or, the The leading moment of the first resource selection window is n+T1, and the trailing moment of the first resource selection window is n+T2.
- the The method when the resource selection trigger time is the arrival time of the service package, after resource selection is performed in the first resource selection window, the The method also includes:
- the resource selection check time is any of the following:
- the processing delay may be determined by at least one of the sensing result processing time Tproc,0, resource selection and sending time Tproc,1, and resource selection window frontier determination parameter T1.
- the processing delay can be any of the following: Tproc, 1; T1; Tproc, 0+Tproc, 1; Tproc, 0+T1; Tproc, 1+1; T1+1; (Tproc, 0+Tproc , 1)+1; (Tproc, 0+T1)+1; wherein, "1" in the above formula is a time unit, in addition, the processing delay can also be a time unit, and the time unit can be OFDM symbol, physical Time slot, logical time slot, time slot in resource pool, physical subframe, logical subframe or subframe in resource pool, ms, etc.
- Tproc, 0, Tproc, 1, and T1 in the above formula are all time units defined by the through link, such as OFDM symbols, physical time slots, logical time slots, time slots in resource pools, physical subframes, Logical subframe or subframe, ms, etc. in the resource pool.
- the reason for determining the resource selection check time and checking the selected resources at the resource selection check time is that although partial sensing can be defined based on the first of at least Y time-domain candidate resources determined in advance Part of the perception opportunity is determined by subtracting the time ty0 of the time ty0 where the first time-domain candidate resource is located or the time ty0 where the first time-domain candidate resource among the Y time-domain candidate resources is located, but if the resource selection trigger Determining the time as the arrival time of the service packet does not ensure that all partial sensing results are fully used to avoid collisions. Therefore, it is necessary to additionally define the resource selection check time for this specific implementation to ensure that all partial sensing results can be fully used.
- the resource selection check time is determined, and at the resource selection check time, resource exclusion based on perception is performed, including:
- the physical layer of the user equipment determines the resource selection check time, and performs resource exclusion based on perception at the resource selection check time;
- the MAC of the user equipment determines the resource selection check time, and triggers the physical layer of the user equipment to perform perception-based resource exclusion at the resource selection check time.
- the resource selection check time can be determined by the physical layer, or the resource selection check time can be determined by the MAC layer; when the resource selection check time is determined by the physical layer, the physical layer can determine the resource selection check time Perform perception-based resource exclusion at all times.
- the MAC layer triggers the physical layer of the user equipment to perform perception-based resource exclusion at the resource selection check time, thus avoiding the MAC layer and The multiple interactions between the physical layers realize the balance of power saving and reliability of the UE.
- the physical layer reports the exclusion result to the MAC layer; the MAC layer determines whether the selected resource is excluded according to the exclusion result; the MAC layer determines whether the resource has been excluded. If the selected resource is excluded, perform resource reselection.
- the method further includes: performing continuous partial sensing before the resource selection check time.
- performing continuous partial sensing specifically includes: the MAC layer of the user equipment triggers the user equipment The physical layer performs continuous sensing before the resource selection check time;
- performing continuous partial sensing before the resource selection check time specifically includes: the physical layer performing continuous sensing before the resource selection check time.
- the method also includes:
- the method also includes:
- Resource selection is performed within the second resource selection window.
- the leading time of the second resource selection window is p+T1
- the trailing time of the second resource selection window is p+T2
- p is the reference time of the resource selection window
- T1 is the parameter determined at the front edge of the resource selection window
- T2 is the parameter determined at the rear edge of the resource selection window
- the resource selection window reference time is any of the following:
- the processing delay may be determined by at least one of the sensing result processing time Tproc,0, resource selection and sending time Tproc,1, and resource selection window frontier determination parameter T1.
- the processing delay can be any of the following: Tproc, 1; T1; Tproc, 0+Tproc, 1; Tproc, 0+T1; Tproc, 1+1; T1+1; (Tproc, 0+Tproc , 1)+1; (Tproc, 0+T1)+1; wherein, "1" in the above formula is a time unit, in addition, the processing delay can also be a time unit, and the time unit can be OFDM symbol, physical Time slot, logical time slot, time slot in resource pool, physical subframe, logical subframe or subframe in resource pool, ms, etc.
- Tproc, 0, Tproc, 1, and T1 in the above formula are all time units defined by the through link, such as OFDM symbols, physical time slots, logical time slots, time slots in resource pools, physical subframes, Logical subframe or subframe, ms, etc. in the resource pool.
- the resource selection window reference time is used to determine the resource selection window, which can be determined by the physical layer of the user equipment itself, or indicated by the MAC layer of the user equipment, or, the same as the arrival time of the service packet, or, It is the same as the resource selection trigger time, or the resource exclusion execution time determined by the physical layer, or the resource selection check time determined by the physical layer, but it is not limited to the above situations.
- the method also includes:
- the second moment is any of the following:
- the processing delay may be determined by at least one of the sensing result processing time Tproc,0, resource selection and sending time Tproc,1, and resource selection window frontier determination parameter T1.
- the processing delay can be any of the following: Tproc, 1; T1; Tproc, 0+Tproc, 1; Tproc, 0+T1; Tproc, 1+1; T1+1; (Tproc, 0+Tproc , 1)+1; (Tproc, 0+T1)+1; wherein, "1" in the above formula is a time unit, therefore, the processing delay can also be a time unit, and the time unit can be OFDM symbol, physical Time slot, logical time slot, time slot in resource pool, physical subframe, logical subframe or subframe in resource pool, ms, etc.
- Tproc, 0, Tproc, 1, and T1 in the above formula are all time units defined by the through link, such as OFDM symbols, physical time slots, logical time slots, time slots in resource pools, physical subframes, Logical subframe or subframe, ms, etc. in the resource pool.
- the resource selection method in the embodiment of the present disclosure realizes: firstly, when the UE determines that periodic service packets are sent according to the preemption configuration information of the resource pool, it performs partial sensing on each arriving service packet, or queues some service packets Execute partial sensing; both, if the period configuration signaling dedicated to partial sensing is configured, determine the cycle value set according to the instruction, and determine the timing of partial sensing; if the instruction is not configured, configure the signal according to the resource pool The cycle value supported in the order determines part of the sensing timing, so that the user equipment can also determine part of the sensing timing without introducing this instruction; Third, when the UE needs to perform resource selection when the service packet arrives, determine the resource selection trigger time or resource selection check time; fourth, if the UE executes resource selection or resource exclusion at the arrival time of the service packet, at the time of the first candidate time domain resource or before the time of the first candidate time domain resource considering the processing time time, perform resource exclusion again to determine whether resource reselection is required; fifthly
- an embodiment of the present disclosure also provides a resource selection device, which is applied to a user equipment, and the device includes:
- the first determining module 1001 is configured to determine whether resource selection/reselection needs to be triggered when a service package arrives or the service package is about to arrive.
- the first determination module 1001 determines whether resource selection/reselection needs to be triggered when a service package arrives or the service package is about to arrive. Solve the problem that there is currently no definition of the specific process of the resource selection method under the power-saving demand, and realize the resource selection/reselection triggering when the resource service package arrives or the service package is about to arrive under the power-saving mechanism during the resource allocation process The clarity of the determination process realizes the standardization of the resource allocation process.
- the first determining module 1001 is further configured to: determine whether to perform partial sensing when the service packet arrives or is about to arrive; and/or determine a partial sensing timing.
- the first determination module 1001 includes:
- the first determination submodule is configured to determine to perform partial perception when it is determined that resource selection/reselection needs to be triggered for the service package;
- the second determining submodule is configured to, when it is determined that resource selection/reselection does not need to be triggered for the service package, according to the preemption configuration information of the resource pool, or according to the preemption configuration information and the priority of the service package level, determines whether to perform partial sensing.
- the second determining submodule is specifically configured to:
- Partial awareness is determined to be performed in any of the following cases:
- the preemption configuration information is enabled
- the preemption configuration information is a priority threshold
- the preemption configuration information is enabled and the priority of the service package is determined to be not the highest priority
- the preemption configuration information is a priority threshold and the priority of the service package is determined to be not the highest priority.
- the second determining submodule is specifically configured to:
- Preemption configuration information is not provided or configured
- the preemption configuration information is disabled
- the preemption configuration information is enabled and the priority of the service package is determined to be the highest priority
- the preemption configuration information is a priority threshold and the priority of the service package is determined to be the highest priority.
- the first determining module 1001 includes:
- the third determination sub-module is used to determine the period value set corresponding to the perception of the execution part
- a fourth determining submodule configured to determine resources for performing the partial sensing according to the first set of candidate resources and the set of period values
- the first set of candidate resources includes any of the following:
- Y time-domain candidate resources determined during resource selection/reselection map according to the resource reservation period, and obtain Y time-domain candidates after the arrival time of the service package and closest to the arrival time of the service package resource.
- the fourth determining submodule is specifically configured to:
- the resource for performing the partial sensing is the resource of the latest period before the first moment and corresponding to the first candidate resource set;
- the first moment is any of the following:
- the third determining submodule is specifically configured to:
- the period value set is determined according to the resource reservation period list information included in the resource pool configuration parameters.
- the period value indicated by the period value parameter is part or all of the period value indicated by the resource reservation period list included in the resource pool configuration parameter.
- the device also includes:
- the first execution module is configured to perform the following steps when it is determined that resource selection/reselection needs to be triggered:
- the resource selection triggering moment is any of the following:
- the leading moment of the first resource selection window is m+T1
- the trailing moment of the first resource selection window is m+T2
- the leading time of the first resource selection window is n+T1
- the trailing time of the first resource selection window is n+T2
- m is the resource selection trigger time
- n is the service packet arrival time
- T1 is the parameter for determining the front edge of the resource selection window
- T2 is the parameter for determining the rear edge of the resource selection window.
- the first execution module is also used for:
- the resource selection trigger time is the arrival time of the service package, after the resource selection is performed in the first resource selection window, the resource selection check time is determined, and at the resource selection check time, the perception-based resource exclusion;
- the resource selection check time is any of the following:
- the first execution module is also used for:
- Persistent partial sensing is performed before said resource selection check moment.
- the first execution module is also used for:
- the device also includes:
- Resource selection is performed within the second resource selection window.
- the leading moment of the second resource selection window is p+T1
- the trailing moment of the second resource selection window is p+T2
- p is the reference time of the resource selection window
- T1 is the parameter determined at the front edge of the resource selection window
- T2 is the parameter determined at the rear edge of the resource selection window
- the resource selection window reference time is any of the following:
- the device also includes:
- the third execution module is configured to continue executing the resource sensing until the end of the reassessment judgment and/or the preemption judgment after the second moment when it is determined to execute the partial sensing;
- the second moment is any of the following:
- an embodiment of the present disclosure also provides a user equipment, including: a processor 1100; and a memory 1120 connected to the processor 1100 through a bus interface, and the memory 1120 is used to store the The processor 1100 invokes and executes the programs and data stored in the memory 1120 .
- the transceiver 1110 is connected to the bus interface, and is used to receive and send data under the control of the processor 1100; the processor 1100 is used to read the program in the memory 1120 to perform the following steps:
- the processor 1100 determines whether resource selection/reselection needs to be triggered when a service packet arrives or the service packet is about to arrive. Solve the problem that there is currently no definition of the specific process of the resource selection method under the power-saving demand, and realize the resource selection/reselection triggering when the resource service package arrives or the service package is about to arrive under the power-saving mechanism during the resource allocation process The clarity of the determination process realizes the standardization of the resource allocation process.
- the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by the processor 1100 and various circuits of the memory represented by the memory 1120 are linked together.
- the bus architecture can also link together various other circuits such as peripherals, voltage regulators, and power management circuits, etc., which are well known in the art and therefore will not be further described herein.
- the bus interface provides the interface.
- Transceiver 1110 may be a plurality of elements, ie, including a transmitter and a transceiver, providing a means for communicating with various other devices over a transmission medium.
- the user interface 1130 may also be an interface capable of connecting externally and internally to required devices, and the connected devices include but are not limited to keypads, displays, speakers, microphones, joysticks, and the like.
- the processor 1100 is responsible for managing the bus architecture and general processing, and the memory 1120 can store data used by the processor 1100 when performing operations.
- the user equipment provided by the embodiments of the present disclosure is a user equipment capable of performing the above resource selection method, and all embodiments of the above resource selection method are applicable to the user equipment, and can achieve the same or similar beneficial effects .
- an embodiment of the present disclosure also provides a computer-readable storage medium, on which a program is stored.
- a program is stored.
- the various processes of the above-mentioned resource selection method embodiment are implemented, and the same To avoid repetition, the technical effects will not be repeated here.
- the computer-readable storage medium is, for example, a read-only memory (Read-Only Memory, ROM for short), a random access memory (Random Access Memory, RAM for short), a magnetic disk or an optical disk, and the like.
- each component or each step can be decomposed and/or reassembled. These decompositions and/or recombinations should be considered equivalents of the present disclosure. Also, the steps for performing the above series of processes may naturally be performed in the order described or in chronological order, but not necessarily in chronological order, and some steps may be performed in parallel or independently of each other.
- the object of the present disclosure can also be achieved by running a program or a group of programs on any computing device.
- the computing device may be a known general-purpose device. Therefore, the object of the present disclosure can also be achieved only by providing a program product including program codes for realizing the method or device. That is to say, such a program product also constitutes the present disclosure, and a storage medium storing such a program product can also constitute the present disclosure.
- the storage medium may be any known storage medium or any storage medium developed in the future.
- each determining module can be a separate processing element, and can also be integrated in a certain chip of the above-mentioned device.
- it can also be stored in the memory of the above-mentioned device in the form of program code, and processed by a certain chip of the above-mentioned device.
- the component invokes and executes the functions of the modules identified above.
- the implementation of other modules is similar.
- all or part of these modules can be integrated together, and can also be implemented independently.
- the processing element mentioned here may be an integrated circuit with signal processing capability.
- each step of the above method or each module above can be completed by an integrated logic circuit of hardware in the processor element or an instruction in the form of software.
- each module, unit, subunit or submodule may be one or more integrated circuits configured to implement the above method, for example: one or more specific integrated circuits (Application Specific Integrated Circuit, ASIC), or, one or Multiple microprocessors (digital signal processor, DSP), or, one or more field programmable gate arrays (Field Programmable Gate Array, FPGA), etc.
- ASIC Application Specific Integrated Circuit
- DSP digital signal processor
- FPGA Field Programmable Gate Array
- the processing element may be a general-purpose processor, such as a central processing unit (Central Processing Unit, CPU) or other processors that can call program codes.
- these modules can be integrated together and implemented in the form of a system-on-a-chip (SOC).
- SOC system-on-a-chip
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Abstract
Description
Claims (20)
- 一种资源选择方法,应用于用户设备,所述方法包括:在业务包到达或者所述业务包将要到达的情况下,确定是否需要触发资源选择/重选。
- 根据权利要求1所述的方法,其中,所述方法还包括:在所述业务包到达或者所述业务包将要到达的情况下,确定是否执行部分感知;和/或,确定部分感知时机。
- 根据权利要求2所述的方法,其中,确定是否执行部分感知,包括:在确定需要对所述业务包触发资源选择/重选的情况下,确定执行部分感知;在确定不需要对所述业务包触发资源选择/重选的情况下,根据资源池的抢占配置信息,或者,根据所述抢占配置信息和所述业务包的优先级,确定是否执行部分感知。
- 根据权利要求3所述的方法,其中,根据资源池的抢占配置信息,或者,根据所述抢占配置信息和所述业务包的优先级,确定是否执行部分感知,包括:在下述任一种情况下,确定执行部分感知:所述抢占配置信息为使能;所述抢占配置信息为优先级门限值;所述抢占配置信息为使能且所述业务包优先级被确定为非最高优先级;所述抢占配置信息为优先级门限值且所述业务包优先级被确定为非最高优先级。
- 根据权利要求3所述的方法,其中,根据资源池的抢占配置信息,或者,根据所述抢占配置信息和所述业务包的优先级,确定是否执行部分感知,包括:在下述任一种情况下,确定不执行部分感知:未提供或未配置抢占配置信息;所述抢占配置信息为不使能;所述抢占配置信息为使能且所述业务包的优先级被确定为最高优先级;所述抢占配置信息为优先级门限值且所述业务包的优先级被确定为最高优先级。
- 根据权利要求2所述的方法,其中,确定部分感知时机,包括:确定执行部分感知对应的周期值集合;根据第一候选资源集合和所述周期值集合,确定执行所述部分感知的资源;其中,所述第一候选资源集合包括下述任一项:预先确定的Y个时域候选资源;根据已进行资源选择/重选时确定的Y个时域候选资源,按照资源预约周期进行映射、得到的所述业务包的到达时刻之后且距离所述业务包到达时刻最近的Y个时域候选资源。
- 根据权利要求6所述的方法,其中,根据第一候选资源集合和所述周期值集合,确定执行所述部分感知的资源,包括:根据所述周期值集合,确定执行所述部分感知的资源为在第一时刻之前且与所述第一候选资源集合对应的最近的一个周期的资源;其中,所述第一时刻为下述任一项:业务包到达时刻;预先确定的至少Y个时域候选资源中的第一个时域候选资源所在的时刻ty0;预先确定的至少Y个时域候选资源中的第一个时域候选资源所在的时刻ty0减去处理时延的时刻。
- 根据权利要求6所述的方法,其中,确定需要执行周期性部分感知对应的周期值集合,包括:根据预配置或网络配置的用于确定部分感知时机的周期值参数,确定所述周期值集合;或者,在未获取到预配置或网络配置的用于确定部分感知时机的周期值参数的情况下,根据资源池配置参数中包含的资源预约周期列表信息确定所述周期值集合。
- 根据权利要求8所述的方法,其中,所述周期值参数指示的周期值为所述资源池配置参数中包含的资源预约周期列表所指示的周期值的部分或者全部。
- 根据权利要求1所述的方法,其中,所述方法还包括:在确定需要触发资源选择/重选的情况下,执行以下步骤:在资源选择触发时刻确定第一资源选择窗;在所述第一资源选择窗内进行资源选择;其中,所述资源选择触发时刻为下述任一项:业务包到达时刻;预先确定的至少Y个时域候选资源中的第一个时域候选资源所在的时刻ty0;至少Y个时域候选资源中的第一个时域候选资源所在的时刻ty0减去处理时延的时刻。
- 根据权利要求10所述的方法,其中,所述第一资源选择窗的前沿时刻为m+T1,所述第一资源选择窗的后沿时刻为m+T2;或者,所述第一资源选择窗的前沿时刻为n+T1,所述第一资源选择窗的后沿时刻为n+T2;其中,m为资源选择触发时刻,n为业务包到达时刻,T1为资源选择窗前沿确定参数,T2为资源选择窗后沿确定参数。
- 根据权利要求10所述的方法,其中,在所述资源选择触发时刻为所述业务包到达时刻的情况下,在所述第一资源选择窗内进行资源选择之后,所述方法还包括:确定资源选择检查时刻,在所述资源选择检查时刻,进行基于感知的资源排除;在已选资源被排除的情况下,进行资源重选;所述资源选择检查时刻为下述任一项:预先确定的至少Y个时域候选资源中的第一个时域候选资源所在的时刻ty0;预先确定的至少Y个时域候选资源中的第一个时域候选资源所在的时刻 ty0减去处理时延的时刻。
- 根据权利要求12所述的方法,其中,所述方法还包括:在所述资源选择检查时刻之前,执行持续部分感知。
- 根据权利要求10所述的方法,其中,所述方法还包括:在所述资源选择触发时刻之前,执行持续部分感知。
- 根据权利要求1所述的方法,其中,所述方法还包括:在确定需要触发资源选择/重选的情况下,执行以下步骤:确定第二资源选择窗;在所述第二资源选择窗内进行资源选择。
- 根据权利要求15所述的方法,其中,所述第二资源选择窗的前沿时刻为p+T1,所述第二资源选择窗的后沿时刻为p+T2;其中,p为资源选择窗参考时刻,T1为资源选择窗前沿确定参数,T2为资源选择窗后沿确定参数;其中,所述资源选择窗参考时刻为下述任一项:业务包到达时刻;预先确定的至少Y个时域候选资源中的第一个时域候选资源所在的时刻ty0;预先确定的至少Y个时域候选资源中的第一个时域候选资源所在的时刻ty0减去处理时延的时刻。
- 根据权利要求2所述的方法,其中,所述方法还包括:在确定执行部分感知的情况下,在第二时刻之后,持续执行资源感知至重评估判断和/或抢占判断结束;其中,所述第二时刻为下述任一项:业务包到达时刻;预先确定的至少Y个时域候选资源中的第一个时域候选资源所在的时刻ty0;预先确定的至少Y个时域候选资源中的第一个时域候选资源所在的时刻ty0减去处理时延的时刻。
- 一种用户设备,包括:收发机、存储器、处理器及存储在所述存储 器上并了在所述处理器上运行的计算机程序,所述处理器执行所述计算机程序时实现如权利要求1至17中任一项所述的资源选择方法。
- 一种资源选择装置,应用于用户设备,包括:第一确定模块,用于在业务包到达或者所述业务包将要到达的情况下,确定是否需要触发资源选择/重选。
- 一种计算机可读存储介质,其上存储有计算机程序,所述计算机程序被处理器执行时实现如权利要求1至17中任一项所述的资源选择方法。
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EP4307807A1 (en) | 2024-01-17 |
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