WO2019149117A1 - 选择资源的方法及装置 - Google Patents

选择资源的方法及装置 Download PDF

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Publication number
WO2019149117A1
WO2019149117A1 PCT/CN2019/072768 CN2019072768W WO2019149117A1 WO 2019149117 A1 WO2019149117 A1 WO 2019149117A1 CN 2019072768 W CN2019072768 W CN 2019072768W WO 2019149117 A1 WO2019149117 A1 WO 2019149117A1
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Prior art keywords
sidelink
processes
resource
selection
sidelink processes
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PCT/CN2019/072768
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English (en)
French (fr)
Inventor
邢卫民
卢有雄
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中兴通讯股份有限公司
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Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to US16/760,149 priority Critical patent/US12022434B2/en
Priority to JP2020524137A priority patent/JP7211633B2/ja
Priority to EP19747483.6A priority patent/EP3691383A4/en
Priority to KR1020207011206A priority patent/KR20200052374A/ko
Publication of WO2019149117A1 publication Critical patent/WO2019149117A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/02—Selection of wireless resources by user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H04L5/0008—Wavelet-division
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H04L5/0062—Avoidance of ingress interference, e.g. ham radio channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0096—Indication of changes in allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H04L5/16—Half-duplex systems; Simplex/duplex switching; Transmission of break signals non-automatically inverting the direction of transmission
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/53—Allocation or scheduling criteria for wireless resources based on regulatory allocation policies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/02—Data link layer protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/18—Interfaces between hierarchically similar devices between terminal devices

Definitions

  • the present application relates to the field of communications, for example, to a method and apparatus for selecting resources.
  • FIG. 1 is a schematic diagram of a Sidelink communication structure according to the related art.
  • Sidelink communication can be divided into two types of communication modes. In the first type of mode, the UE transmits the resources of the Sidelink signal from the scheduling of the base station, and in the second mode, the UE is configured or pre-configured.
  • the communication mode of the resource is selected autonomously.
  • the resource selection strategy mainly includes: a sensing mechanism, a partial sensing mechanism, and a random selection mechanism.
  • Sidelink communication is required to support carrier aggregation (CA), that is, multiple The carriers are transmitted in parallel, where the parallelism can be simultaneous or time-sharing.
  • CA carrier aggregation
  • the related art will face some difficulties in the carrier aggregation scenario, for example, the related technology is mainly performed by the Sidelink process, and the resources used by one Sidelink process belong to the same carrier, if the Sidelink process on each carrier in the carrier aggregation Independent trigger resource selection and reselection will face severe half-duplex (currently the current state of the art and industry assumes that the terminal UE does not support simultaneous transmission and reception).
  • CC#1 first performs resource selection, it is assumed that subframe 1 is selected, then subframe. If there is a transmission of CC#1 at the time of 1st, CC#2 cannot perform sensing on the subframe 1, and if the UE performs resource selection on CC#2, only the subframe different from the subframe 1 can be selected.
  • the UE's transmission will occupy a longer time domain length, and at the same time, due to the half-duplex case, when the UE transmits in a longer time domain length, the UE cannot perform sensing on the time domain length, and cannot sensing the resource according to The related sensing mechanism will not be selected as the transmission resource, and the UE will not be able to receive the time domain length, resulting in the loss of more data packets sent by other UEs. This problem is more serious in the case where the number of carriers to be aggregated is larger.
  • the UE uses Sidelink resources for information transmission.
  • the Sidelink communication method includes Device to Device (D2D) communication and Vehicle to Vehicle (Vehicle to Vehicle). , V2V) communication, etc.
  • D2D Device to Device
  • Vehicle to Vehicle Vehicle to Vehicle
  • V2V Vehicle to Vehicle
  • the network side configures the Sidelink resource pool for the UE, or the system pre-configures the Sidelink resource pool, and the UE uses the resources in the Sidelink resource pool to carry the Sidelink information.
  • a UE selects a resource to communicate autonomously according to a resource selection policy in a resource pool configured or pre-configured
  • the UE selects and reselects the resource by using a Sidelink process (Sidelink process).
  • Sidelink process Since an important type of service in the Sidelink communication is a periodic broadcast service, when selecting a resource, the UE generally selects a set of periodically occurring resources to carry the Sidelink process used by the service. This group of resources can be called Authorized for a Sidelink (Sidelink grant). If the UE performs the autonomous resource selection, the UE may select the same resource, that is, the resource selection conflicts.
  • the related art defines a series of trigger conditions for resource selection and reselection for triggering resource selection and reselection.
  • FIG. 2 is a schematic diagram of resource selection and reselection independently according to each Sidelink process after resource selection in the related art.
  • the triggering conditions of the resource selection and reselection are performed independently for each Sidelink process.
  • the trigger condition of a Sidelink process is met, the resource selection/reselection of the corresponding Sidelink process is triggered, and the resource selection/heavy
  • the selection may be performed by a Media Access Control (MAC) entity or a Hybrid Automatic Repeat ReQuest (HARQ) entity of the UE, which is not limited herein.
  • the resource selection/reselection triggered by the trigger condition of each of the above-mentioned Sidelink processes may occur in a carrier aggregation scenario with a large probability of half-duplex.
  • the embodiment of the present application provides a method and an apparatus for selecting a resource, so as to prevent the process of the Sidelink of each carrier in the carrier aggregation in the related art from proceeding independently, resulting in a serious half-duplex situation.
  • a method for selecting a resource includes: initiating at least one side link Sidelink process on at least one carrier; determining that the at least one Sidelink process is a set of Sidelink processes; The preset rule triggers resource selection of the set of Sidelink processes.
  • an apparatus for selecting a resource comprising: an initiating module configured to initiate at least one side link Sidelink process on at least one carrier; and a determining module configured to determine The at least one Sidelink process is a set of Sidelink processes; the triggering module is configured to trigger resource selection of the set of Sidelink processes according to a preset rule.
  • a storage medium having stored therein a computer program, wherein the computer program is configured to execute the steps of any one of the method embodiments described above.
  • an electronic device comprising a memory and a processor, wherein the memory stores a computer program, the processor being configured to run the computer program to perform any of the above The steps in the method embodiments.
  • FIG. 1 is a schematic diagram of a Sidelink communication structure according to the related art
  • FIG. 2 is a schematic diagram of resource selection and reselection independently according to each Sidelink process after resource selection in the related art
  • FIG. 3 is a hardware structural block diagram of a mobile terminal for selecting a resource method according to an embodiment of the present application
  • FIG. 4 is a flowchart of a method for selecting a resource according to an embodiment of the present application.
  • FIG. 5 is a schematic diagram of at least one of resource selection and reselection that one process can directly trigger another process according to an exemplary embodiment of the present application;
  • FIG. 6 is a schematic diagram of setting a timer or counter to trigger resource selection or reselection of a Sidelink process, according to an example embodiment of the present application.
  • the technical solution of the embodiment of the present application can be applied to a scenario such as point-to-point communication, such as D2D communication, V2V communication, and the like. It should be noted that the operating environment of the above information transmission method provided in the embodiment of the present application is not limited to the foregoing network architecture.
  • FIG. 3 is a block diagram of a hardware structure of a mobile terminal selecting a resource method according to an embodiment of the present application.
  • the mobile terminal 30 can include at least one (only one shown in FIG. 3) processor 302, which can include, but is not limited to, a Microcontroller Unit (MCU) or a programmable logic device (Field).
  • MCU Microcontroller Unit
  • Field programmable logic device
  • a processing device such as a Programmable Gate Array (FPGA), and a memory 304 configured to store data.
  • the mobile terminal may further include a transmission device 306 configured as a communication function.
  • the structure shown in FIG. 3 is merely illustrative, and does not limit the structure of the above mobile terminal.
  • the mobile terminal 30 may also include more or fewer components than those shown in FIG. 3, or have a different configuration than that shown in FIG.
  • the memory 304 can be configured as a software program and a module for storing application software, such as a program instruction/module corresponding to a method for selecting a resource in the embodiment of the present application, and the processor 302 executes by executing a software program and a module stored in the memory 304.
  • application software such as a program instruction/module corresponding to a method for selecting a resource in the embodiment of the present application
  • the processor 302 executes by executing a software program and a module stored in the memory 304.
  • Various functional applications and data processing, that is, the above methods are implemented.
  • Memory 304 can include high speed random access memory, and can also include non-volatile memory, such as at least one magnetic storage device, flash memory, or other non-volatile solid state memory.
  • memory 304 can further include memory remotely located relative to processor 302, which can be connected to mobile terminal 30 over a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks,
  • Transmission device 306 is arranged to receive or transmit data via a network.
  • the above-described network specific example may include a wireless network provided by a communication provider of the mobile terminal 30.
  • transmission device 306 includes a Network Interface Controller (NIC) that can be connected to other network devices through a base station to communicate with the Internet.
  • NIC Network Interface Controller
  • the transmission device 306 can be a Radio Frequency (RF) module configured to communicate with the Internet wirelessly.
  • RF Radio Frequency
  • FIG. 4 is a flowchart of a method for selecting a resource according to an embodiment of the present application. As shown in FIG. 4, the process includes step S402, step S404. And step S406.
  • step S402 at least one side link Sidelink process is initiated on at least one carrier.
  • step S404 it is determined that the at least one Sidelink process is a set of Sidelink processes.
  • step S406 resource selection of the set of Sidelink processes is triggered according to a preset rule.
  • the resource selection in this application file also includes resource re-election.
  • at least one Sidelink process is initiated on one carrier or at least one Sidelink process is initiated on multiple carriers.
  • At least one side link Sidelink process is initiated on at least one carrier; determining that the at least one Sidelink process is a set of Sidelink processes; and resource selection of the set of Sidelink processes is triggered according to a preset rule.
  • the process of the Sidelink of each carrier in the carrier aggregation in the related art is avoided, resulting in a serious half-duplex situation, and resource selection is performed for a group of Sidelink processes, thereby avoiding the independent implementation of the Sidelink process of each carrier and avoiding A serious half-duplex situation.
  • the execution body of the above steps may be a terminal, a vehicle, or the like, but is not limited thereto.
  • step S402, step S404, and step S406 is interchangeable, that is, step S404 may be performed first, and then S402 is performed.
  • the resource selection of the set of Sidelink processes is triggered according to a preset rule, including at least one of: triggering a set of Sidelink processes by triggering resource selection based on determining a Sidelink process in the set of Sidelink processes.
  • Resource selection triggering the set of Sidelink processes for resource selection according to a counter or timer configured in advance for the set of Sidelink processes; triggering the set of Sidelinks based on determining that the carrier selection or resource pool corresponding to the set of Sidelink processes changes The process makes resource selection.
  • determining that one of the Sidelink processes in the set of Sidelink processes triggers resource selection triggering the set of Sidelink processes to perform resource selection, including one of: determining that the one Sidelink process triggers resource selection as the one The trigger condition for resource selection by other Sidelink processes in the group's Sidelink process; the trigger condition of other Sidelink processes in the set of Sidelink processes is determined to be the same as the trigger condition of the one Sidelink process.
  • determining a resource selection by triggering a resource selection by triggering a set of Sidelink processes based on determining a Sidelink process in the set of Sidelink processes, including at least one of: determining that the one Sidelink is in the set of Sidelink processes
  • the Sidelink of the preset group triggers the set of Sidelink processes for resource selection after the triggering of the resource selection by the one Sidelink process; and allows the plurality of trigger conditions in the case where the one Sidelink process includes multiple trigger conditions
  • the partial triggering condition triggers a Sidelink process and other Sidelink processes in the set of Sidelink processes to perform resource selection; after determining that the one Sidelink process triggers resource selection, triggers a part of the Sidelink process in the set of Sidelink processes to perform resource selection.
  • triggering the resource selection of the set of Sidelink processes according to the preset rule includes: disabling a partial trigger condition corresponding to a part of the Sidelink processes in the set of Sidelink processes.
  • the partial Sidelink process is a Sidelink process of the set of Sidelink processes except the one Sidelink process. It should be added that multiple Sidelink processes that disable the trigger condition may be different from each other. For example, assume that 4 processes, each process has 7 unique trigger conditions, disable the trigger condition of the first process 1, 2, 3, disable 2, 3, 5 of the second process.
  • the method for enabling the trigger condition of the Sidelink process includes at least one of: setting an enable flag for a trigger condition corresponding to the Sidelink process; and responding to a trigger condition corresponding to the Sidelink process. Set its enable flag to false; set the reference value of the trigger condition corresponding to the Sidelink process to a predetermined value.
  • the reference value may be an unusable value, such as a value other than an international protocol or an international standard, and the setting effect is that the trigger condition cannot be triggered.
  • the set of Sidelink processes is triggered to perform resource selection according to a counter or a timer configured in advance for the set of Sidelink processes, including one of: triggering the set after determining that the counter reaches the preset value.
  • the Sidelink process performs resource selection, wherein the counter is set to count the associated state variable of the set of Sidelink processes, or the number of operations of the associated operation; after determining that the timer expires, triggering the set of Sidelink processes for resource selection.
  • the counter is set to count the associated state variable of the set of Sidelink processes, or the number of operations of the associated operation includes one of: the counter is set to count the subset of the Sidelink process, and some or all of the Sidelink processes are independent The number of times the resource selection is triggered; the counter is set to count the number of times that some or all of the Sidelink processes perform data transmission in the set of Sidelink processes; the counter is set to count the number of resource cycles that the set of Sidelink processes have passed since the last resource selection The counter is set to count the number of resources occupied by the set of Sidelink processes in one resource period, wherein the resource includes at least one of the following: a time domain resource, a frequency domain resource, an air domain resource, and a code domain resource. It should be added that the number of resource periods and the number of occupied time domains may be associated state variables.
  • determining that the carrier selection or resource pool change corresponding to the group of Sidelink processes includes one of the following: the synchronization reference resource of the resource pool configuration corresponding to the set of Sidelink processes is changed, and needs to be supplemented, including but The location of the synchronization reference resource is not limited to the number of synchronization reference resources; the carrier corresponding to the set of Sidelink processes has a carrier or carrier set selection (which may also include carrier reselection), or corresponds to the set of Sidelink processes.
  • the synchronization reference or synchronization reference source of the carrier changes.
  • the method before the carrier or carrier set selection of the resource pool corresponding to the Sidelink process occurs, the method further includes: triggering resource selection based on a Sidelink process in the set of Sidelink processes, triggering the carrier or Carrier set selection; carrier selection occurs on some carriers in the carrier set, or resource selection occurs in some Sidelink processes in the set of Sidelink processes, triggering carrier set selection on the carrier set; triggering according to a preset counter or timer Carrier or carrier set selection, wherein the counter is set to count the number of operations of the associated operation of the set of Sidelink processes.
  • determining that the at least one Sidelink process is a set of Sidelink processes including one of: determining a plurality of Sidelink processes for transmitting data of the same logical channel, for the set of Sidelink processes; determining for transmitting Multiple Sidelink processes of data of the same service type, the set of Sidelink processes; determining a plurality of Sidelink processes for transmitting data of the same set of logical channels, for the set of Sidelink processes, wherein the set of logical channels
  • the data packets have the same destination address, or have the same source address and destination address pair; determine multiple Sidelink processes with the same resource scheduling period as the set of Sidelink processes.
  • the resource selection or reselection of the Sidelink process can be triggered.
  • Trigger condition 1 The resource reselection counter of the process is 0, and the generated random number a is greater than the configured resource retention probability (probResourceKeep), where a is a random number uniformly distributed over [0, 1].
  • the generation and comparison of the random number a is earlier than when the counter reaches zero, for example, when the counter reaches 1.
  • a resource reselection counter is set for each Sidelink process, and is recorded as SL_RESOURCE_RESLEC TION_COUNTER.
  • an initial value is set for the counter, and the initial value is a uniformity.
  • the distributed random integers, the uniformly distributed intervals can be different according to the resource period, and the counter is decremented by one each time the data is sent.
  • Trigger Condition 2 On a group of resources that have been selected, there is no transmission for a continuous period of time, for example, no transmission is performed for one second.
  • Trigger condition 3 Similar to trigger condition 2, if the upper layer defines the parameter sl-ReselectAfter, and the number of consecutive transmission resources on the selected Sidelink grant is equal to sl-ReselectAfter.
  • Trigger Condition 4 The corresponding resource has not been selected for the Sidelink process, that is, the Sidelink grant has not been configured. This situation is generally the first resource selection.
  • Trigger condition 5 The configured Sidelink grant no longer satisfies the transmission requirements. For example, the maximum modulation and coding mechanism (MCS) allowed cannot carry the data packet, and the MAC selection does not split the data packet.
  • MCS modulation and coding mechanism
  • Trigger condition 6 The configured Sidelink grant no longer meets the data delay requirement, and the MAC does not want to perform temporary dynamic scheduling for the service.
  • Trigger Condition 7 The resource pool is configured or reconfigured.
  • the present application proposes a triggering method for resource selection and reselection.
  • the specific manner includes the following methods and combinations thereof.
  • FIG. 5 is a schematic diagram of at least one of resource selection and reselection that one process can directly trigger another process according to an exemplary embodiment of the present application. As shown in FIG. 5, two processes can mutually trigger at least one of resource selection and resource reselection.
  • a timer is pre-configured or configured for a set of Sidelink processes, and resource selection/reselection of the set of Sidelink processes is triggered when the timing arrives.
  • 6 is a schematic diagram of setting a timer or counter to trigger resource selection or reselection of a Sidelink process, according to an example embodiment of the present application. As shown in Figure 6, a timer or counter can trigger a resource selection or resource reselection of a process.
  • a group of resource pools corresponding to a set of Sidelink processes have changed, such as carrier reselection.
  • a physical resource that can be used to transmit a Sidelink signal constitutes a Sidelink resource pool, such as a physical side link control channel (PSCCH) resource pool for transmitting a Sidelink control message, and a physical edge for transmitting Sidelink data.
  • a Sidelink resource pool is generally configured on one carrier.
  • the resource selection/reselection of the Sidelink process generally refers to selecting/reselecting the Sidelink resource on the resource pool. Because there is a certain correspondence between the carrier, the resource pool, and the Sidelink process, it is not strictly distinguished in the description of this document. That is, the general description is the operation of multiple Sidelink processes, and can also be understood as being directed to multiple carriers or multiple resource pools. Operation.
  • Method 1 In a set of Sidelink processes, one of the processes triggers resource selection or reselection, which may trigger resource selection or reselection of other Sidelink processes in the group.
  • the UE uses multiple Sidelink processes to transmit on multiple carriers (additionally, there may be multiple Sidelink processes on one carrier), and multiple Sidelink processes on the multiple carriers are configured as a set of Sidelink processes.
  • the UE uses N Sidelink processes for transmission, and the M processes form a set of Sidelink processes, which are recorded as a Sidelink process set A (Set-A).
  • Set-A Sidelink process set A
  • M Sidelink processes corresponding to one-to-one on M carrier CCs.
  • Each Sidelink process in the group has a trigger condition that can trigger its resource selection/reselection, such as the above trigger conditions 1-7.
  • a Sidelink resource selection/re-selection trigger condition to trigger the resource selection/re-selection of a certain Sidelink process within the group. If the condition is met, the resource selection/reselection of other Sidelink processes in the group is triggered at the same time.
  • the trigger condition corresponding to the Sidelink process i in the group is also the trigger condition of the Sidelink process j in the group; or the Sidelink process i in the group triggers the trigger condition of the resource selection/reselection as the Sidelink process j in the group.
  • Example 2 provides a viable solution for reducing the number of resource selection/reselection times.
  • a set of Sidelink processes includes processes 1, 2, 3, 4, and processes 1 and 2 are set to processes that can trigger other Sidelink processes for resource selection. For example, when process 1 triggers resource selection/reselection, the Sidelink process is triggered simultaneously. 2, 3, 4 for resource selection, but when the trigger condition of process 3 is satisfied, only process 3's own resource selection/reselection is triggered.
  • trigger condition 1 trigger resource selection/reselection of other Sidelink processes
  • trigger conditions 2-7 can only trigger resource selection/reselection of the corresponding process.
  • the multiple Sidelink processes triggered may be a subset of the set of Sidelink processes.
  • a set of resource selection/reselection trigger conditions associated with the process is recorded as the unique trigger condition set Set-X(i) corresponding to the process i.
  • set a set of general trigger condition set Set-Y (the trigger condition applicable to the entire set of Sidelink processes is called a general trigger condition)
  • the trigger condition j in the set Set-Y is satisfied, the resource selection of the process set Set-A is triggered.
  • /Reselection which triggers resource selection/reselection for this set of Sidelink processes.
  • the generic trigger condition set is derived from the trigger conditions specific to each process in a set of Sidelink processes.
  • Set-Y(i) is a subset of Set-X(i), which indicates the trigger condition set selected as the general trigger condition in the trigger condition Set-X(i) corresponding to the process i.
  • the resource selection/reselection of the Sidelink process is triggered.
  • the trigger condition in the related art is satisfied, for example, any of the trigger conditions in the unique trigger condition set Set-X(i) corresponding to the Sidelink process is satisfied (trigger conditions 1, 2, ... 7); the newly defined general trigger condition Satisfaction, for example, the trigger condition in Set-Y is satisfied, and is equivalent to other Sidelink processes for resource selection/reselection (trigger condition belongs to Set-Y), although the trigger condition applies to multiple Sidelink processes, but from each Sidelink process
  • the triggering process of resource selection/re-selection also has the same effect.
  • the resource selection/reselection of a Sidelink process may be triggered by a trigger condition corresponding to the Sidelink process, or may be triggered by a trigger condition of another Sidelink process or the above-mentioned general trigger condition.
  • This example illustrates the resource selection/re-selection triggered by the unique trigger conditions corresponding to each existing Sidelink process. For example, disable the triggering of the resource selection/reselection by the trigger condition corresponding to a Sidelink process. This can reduce the independent resource selection/reselection of each Sidelink process, further reducing the half-duplex situation.
  • the specific method is as follows:
  • Sidelink process #1, #2, #3, #4 is a set of Sidelink processes, enabling trigger condition 1 of Sidelink process #1 and triggering Sidelink process #1, #2, #3, #4 process resources as general trigger conditions Select/reselect the trigger condition and disable the corresponding trigger condition 1 of Sidelink process #2, #3, #4, or disable trigger condition 2 of Sidelink process #2.
  • which trigger condition is used as a general trigger condition, and which general trigger condition is not enabled is not necessarily related.
  • the method to enable the trigger condition corresponding to a Sidelink process can be:
  • the related technology sets a uniform resource retention probability (probResourceKeep) for the UE, and its value is less than 1.
  • the resource retention probability (probResourceKeep) can be set to 1 or greater than 1, to enable the trigger condition 1 of all Sidelink processes, and a resource retention probability can be set for each Sidelink process/carrier/resource pool of the UE ( probResourceKeep), and its value can be set to 1 or greater than 1 (indicating that the resource is always maintained).
  • the probResourceKeep corresponding to a certain Sidelink process/carrier/resource pool is set to 1, it indicates that the Sidelink process is disabled or the trigger condition 1 of the Sidelink process on the carrier/resource pool is enabled.
  • the initial value of the resource reselection counter of one Sidelink process or the random interval of the initial value may be set to a special value (which may be set to an unavailable value), indicating that the trigger condition 1 is disabled.
  • Method 2 Preconfigure/configure a counter/timer for a set of Sidelink processes.
  • method two does not use a certain trigger condition existing in each Sidelink process as a common trigger condition of multiple Sidelink processes, but introduces a new trigger condition for a group of Sidelink processes.
  • Pre-configure/configure a counter for a set of Sidelink processes to count the number of resource selection/re-selection of a group of processes.
  • the resource selection/re-selection of the set of Sidelink processes is triggered, as exemplified below. :
  • Sidelink processes #1, #2, #3, #4 are a set of Sidelink processes, denoted as Set-A, set a resource selection/reselection counter for this set of Sidelink processes, and count all 4 Sidelink processes to trigger each independently. The number of times of resource selection/reselection, which can be counted up or down. For example, if the initial value of the counter is set to 3, if any process of Sidelink process #1, #2, #3, #4 triggers resource selection/reselection, the counter is decremented by 1 until it is 0, and Sidelink is triggered. Process #1, #2, #3, #4 perform resource selection/reselection.
  • the resource reselection counter (SL_RESOURCE_RESLEC TION_COUNTER) of all Sidelink processes may be reset.
  • the resource selection/reselection counter can also count only the resource selection/reselection times of a part of the Sidelink process, for example, only count the number of resource selection/reselection of the Sidelink process #1, #2, that is, count the Set of the Sidelink process set.
  • the number of resource selection/reselection for all processes in -B, Set-B is a subset of Set-A.
  • Pre-configure/configure a counter for a set of Sidelink processes may not be the number of resource selection/re-selection of a group of processes, but may be other parameters of the set of processes, such as this set of processes.
  • the number of times that some or all of the processes are transmitting, or the number of resource cycles after the previous resource selection/reselection of the group of processes, and the resource period is a time granularity, indicating that the data transmitted during the period is transmitted twice. interval.
  • a counter is set for a set of Sidelink processes, pre-configured or randomly selected within a range of values to be an initial value of the counter, and a counter that satisfies the counting condition of the above-mentioned counting parameter in a group of processes then decrements the counter, and the counter reaches 0. Trigger all process resource selection/reselection. Or pre-configure or randomly select a value within a range of values to be a counter threshold. If a set of processes satisfies the counting condition of the above counting parameter, then incrementing the counter counter to the threshold triggers all process resource selection/reselection.
  • the counter is associated with certain state parameters of the current set of Sidelink processes, and consuming more subframes on multiple carriers will result in a larger half-duplex condition if the subframes transmitted on each carrier can The same sub-frame will alleviate the half-duplex situation.
  • Set a counter parameter to count the proportion or number of time domain resources (subframes/slots) occupied in one resource period (or other resources, such as frequency domain resources, airspace resources, code domain resources), and set A threshold, which may be an occupancy ratio or a number of occupied subframes. If too many time domain resources are occupied, that is, the proportion or number of time domain resources counted above exceeds the threshold, the resource selection/reselection of the set of Sidelink processes is triggered.
  • a group of Sidelink processes #1, #2, #3, #4 respectively perform data on 4 carriers, and the resource period of transmission is 20 milliseconds (20 ms), and the occupation threshold is set to 8 or the ratio is 0.4 (occupied number) 8/Resource period 20), when the number of occupied time domain subframes of a set of Sidelink processes reaches 8, triggering the set of Sidelink processes for resource selection/reselection.
  • Pre-configure/configure a timer for a set of Sidelink processes When the timing arrives, trigger resource selection/re-selection of the set of Sidelink processes, and reset the timer to the initial value to re-time, that is, periodically trigger by the timer.
  • the group Sidelink process performs resource selection/reselection.
  • Example 6 the timer described in Example 6 can be used.
  • the method triggers resource selection/re-selection of a set of Sidelink processes, and uses the method of instance three to enable the original trigger condition 1 of the set of Sidelink processes themselves.
  • Method 3 A group of resources corresponding to a set of Sidelink processes have changed, such as a carrier being reselected.
  • Carrier aggregation refers to the technology of using multiple carrier process transmissions.
  • Sidelink can also use carrier aggregation technology.
  • a typical carrier aggregation method is that the UE performs multiple Sidelink processes on multiple carriers, for example, the UE sends a service. And use Sidelink process #1, #2, #3, #4 for transmission, assuming that Sidelink processes #1, #2, #3, #4 use carriers CC#1, CC#2, CC#3, CC#4 respectively Resources on.
  • the carrier used by the UE is generally not constant. With the change of the Channel Busy Ratio (CBR), the UE capability limit, and the service to be sent, the UE may select different carrier sets at different times.
  • carrier selection/reselection occurs in a carrier set corresponding to a set of Sidelink processes, resource reselection of all processes is triggered. That is, the change of the carrier set used by the UE may cause the UE to select a new resource for data transmission on the new carrier set. Therefore, the resource selection/reselection of the Sidelink process may be triggered by carrier selection/reselection.
  • the triggering condition for resource selection/reselection of a new Sidelink process may be:
  • the UE performs carrier selection/reselection, or the carrier set used by the UE changes. That is, carrier selection/reselection can trigger a set of Sidelink processes for resource selection/reselection.
  • resource selection/reselection may trigger carrier selection/reselection
  • the resource selection/reselection trigger condition of the above example is also It can be directly used as a trigger condition for carrier reselection, and carrier reselection further causes resource reselection.
  • trigger conditions for carrier selection/reselection include, but are not limited to:
  • carrier selection/reselection can be triggered by resource selection/reselection of the Sidelink process carried on these carriers. Assume that the UE sends a service and uses Sidelink processes #1, #2, #3, #4 for transmission, assuming that Sidelink processes #1, #2, #3, #4 use carriers CC#1, CC#2, CC, respectively.
  • the change of the carrier set is used as a trigger condition for triggering resource reselection by the set of Sidelink processes, that is, the above Sidelink processes #1, #2, #3, #4 need to select a new resource to continue to transmit data, for example, the above corresponds to CC#.
  • the Sidelink process of 4 can switch to other carriers, or release the sidelink process corresponding to CC#4, and generate a new process (the new process is located on carriers CC#1, CC#2, CC#3) to carry the original Sidelink process. Data, etc.
  • a carrier set or a set of Sidelink processes can be defined, and carrier selection/reselection can be triggered only when resources are selected/reselected on these carriers/processes.
  • a counter/timer can be defined to trigger carrier selection/reselection according to the state/operation of a set of Sidelink processes, or to define a timer that periodically triggers carrier selection/reselection.
  • the triggering of the carrier selection/reselection may also consider the resource occupancy of each carrier, the UE capability limitation, the change of the service to be sent, etc., which is not the focus of this paper. , no longer described here.
  • resource selection/reselection of a set of Sidelink processes can be triggered as described in Example 7.
  • the resource pool on the carrier may also change.
  • the Sidelink process of the corresponding carrier may be triggered to perform resource selection/reselection.
  • the synchronization reference or synchronization reference source of multiple carriers may change, and thus the resource pool on these carriers changes, and resource selection/reselection is required.
  • the synchronization reference of the carrier used for carrier aggregation or the synchronization source used has changed, for example, the timing of the currently aggregated carrier is switched from (Global Navigation Satellite System, GNSS) timing to base station timing.
  • GNSS Global Navigation Satellite System
  • the UE sends a service and uses the resources on the carriers CC#1, CC#2, CC#3, CC#4, and the timings of the carriers CC#1, CC#2, CC#3, and CC#4 are consistent.
  • GNSS timing is used at the beginning, but due to the UE's movement, the GNSS timing becomes unreliable, and the aggregated carrier is switched from GNSS timing to base station timing.
  • the carrier set has not changed, the timing of use has changed. Then, the Sidelink on these aggregated carriers will re-select resources.
  • This example is used to illustrate the selection criteria of a set of Sidelink processes in Examples 1 to 9. Specifically:
  • the set of Sidelink processes are used to transmit data of the same logical channel.
  • a typical example is that a logical channel can be transmitted on multiple carriers, and then a Sidelink process is established on each carrier for transmitting data of the logical channel. or,
  • the set of Sidelink processes are used to transmit data of the same service type.
  • a typical example is that at least one logical channel can be established for one service, and the data is transmitted on multiple carriers, and then can be established on each carrier.
  • a Sidelink process is used to transmit data of the at least one logical channel. or,
  • the set of Sidelink processes are used to transmit data of the same set of logical channels, and the data packets on the set of logical channels have the same destination ID or source ID destination ID pair.
  • a typical example is that if the data packets of multiple logical messages have the same destination address, the data packets can be aggregated and transmitted in the same data unit. If the data of these logical channels are transmitted on multiple carriers, Then, a Sidelink process can be established on each carrier for transmitting data of the at least one logical channel. or,
  • the set of Sidelink processes have the same resource scheduling period.
  • the method according to the above embodiments can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware.
  • the technical solution of the present application which is essential or contributes to the related art, may be embodied in the form of a software product stored in a storage medium such as read only memory/random access.
  • the memory Read Only Memory/Random Access Memory, ROM/RAM
  • the magnetic disk, and the optical disk include instructions for causing a terminal device (which may be a mobile phone, a computer, a server, or a network device, etc.) to perform various implementations of the present application.
  • a terminal device which may be a mobile phone, a computer, a server, or a network device, etc.
  • a device for selecting a resource is provided, and the device is configured to implement the foregoing embodiments and example embodiments, and details are not described herein.
  • the term "module" may implement a combination of at least one of software and hardware for a predetermined function.
  • the apparatus described in the following embodiments may be implemented in software, but hardware, or a combination of software and hardware, is also possible and conceivable.
  • an apparatus for selecting a resource including an initiating module, a determining module, and a triggering module.
  • the initiating module is configured to initiate at least one side link Sidelink process on at least one carrier.
  • a determining module is configured to determine that the at least one Sidelink process is a set of Sidelink processes.
  • the trigger module is configured to trigger resource selection of the set of Sidelink processes according to a preset rule.
  • At least one Sidelink process is initiated on one carrier or at least one Sidelink process is initiated on multiple carriers.
  • the above technical solution is adopted to avoid the process of the Sidelink of each carrier in the carrier aggregation in the related art, which leads to a serious half-duplex situation, realizes resource selection for a group of Sidelink processes, and avoids the Sidelink of each carrier.
  • the process is carried out independently, avoiding serious half-duplex situations.
  • the resource selection of the set of Sidelink processes is triggered according to a preset rule, including at least one of: determining that a Sidelink process in the set of Sidelink processes triggers resource selection, triggering the set of Sidelink processes to perform resources. Selecting; according to a counter or timer configured in advance for the set of Sidelink processes, triggering the set of Sidelink processes for resource selection; determining that the carrier selection or resource pool corresponding to the set of Sidelink processes changes, triggering the set of Sidelink processes to perform Resource selection.
  • determining that one of the Sidelink processes in the set of Sidelink processes triggers resource selection triggering the set of Sidelink processes to perform resource selection, including one of: determining that the one Sidelink process triggers resource selection as the one The trigger condition for resource selection by other Sidelink processes in the group's Sidelink process; the trigger condition of other Sidelink processes in the set of Sidelink processes is determined to be the same as the trigger condition of the one Sidelink process.
  • determining that one of the Sidelink processes in the set of Sidelink processes triggers resource selection triggering the set of Sidelink processes to perform resource selection, including at least one of: determining that the one Sidelink is in the set of Sidelink processes
  • the preset group's Sidelink triggers the set of Sidelink processes for resource selection after the one of the Sidelink processes triggers the resource selection; and allows the part of the multiple trigger conditions if the one Sidelink process includes multiple trigger conditions
  • the trigger condition triggers the one Sidelink process to perform resource selection with other Sidelink processes in the set of Sidelink processes; after determining that the one Sidelink process triggers resource selection, triggers a part of the Sidelink process in the set of Sidelink processes to perform resource selection.
  • triggering the resource selection of the set of Sidelink processes according to the preset rule includes: disabling a partial trigger condition corresponding to a part of the Sidelink processes in the set of Sidelink processes.
  • the partial Sidelink process is a Sidelink process of the set of Sidelink processes except the one Sidelink process.
  • the method for enabling the trigger condition of the Sidelink process includes at least one of: setting an enable flag for a trigger condition corresponding to the Sidelink process; and responding to a trigger condition corresponding to the Sidelink process. Set its enable flag to false; set the reference value of the trigger condition corresponding to the Sidelink process to a predetermined value.
  • the set of Sidelink processes is triggered to perform resource selection according to a counter or a timer configured in advance for the set of Sidelink processes, including one of: triggering the set after determining that the counter reaches the preset value.
  • the Sidelink process performs resource selection, wherein the counter is set to count the associated state variable of the set of Sidelink processes, or the number of operations of the associated operation; after determining that the timer expires, triggering the set of Sidelink processes for resource selection.
  • the counter is set to count the associated state variable of the set of Sidelink processes, or the number of operations of the associated operation includes one of: the counter is set to count the subset of the Sidelink process, and some or all of the Sidelink processes are independent The number of times the resource selection is triggered; the counter is set to count the number of times that some or all of the Sidelink processes perform data transmission in the set of Sidelink processes; the counter is set to count the number of resource cycles that the set of Sidelink processes have passed since the last resource selection The counter is set to count the number of resources occupied by the set of Sidelink processes in one resource period, wherein the resource includes at least one of the following: a time domain resource, a frequency domain resource, an air domain resource, and a code domain resource.
  • determining that the carrier selection or resource pool change corresponding to the group of Sidelink processes includes one of the following: a synchronization reference resource of the resource pool configuration corresponding to the set of Sidelink processes is changed; and the set of Sidelink processes corresponds to The carrier or carrier set selection occurs, or the synchronization reference or synchronization reference source of the carrier corresponding to the set of Sidelink processes changes.
  • the method before the carrier or carrier set selection of the resource pool corresponding to the Sidelink process occurs, the method further includes: triggering resource selection based on a Sidelink process in the set of Sidelink processes, triggering the carrier or Carrier set selection; carrier selection occurs on some carriers in the carrier set, or resource selection occurs in some Sidelink processes in the set of Sidelink processes, triggering carrier set selection on the carrier set; triggering according to a preset counter or timer Carrier or carrier set selection, wherein the counter is set to count the number of operations of the associated operation of the set of Sidelink processes.
  • determining that the at least one Sidelink process is a set of Sidelink processes including one of: determining a plurality of Sidelink processes for transmitting data of the same logical channel, for the set of Sidelink processes; determining for transmitting Multiple Sidelink processes of data of the same service type, the set of Sidelink processes; determining a plurality of Sidelink processes for transmitting data of the same set of logical channels, for the set of Sidelink processes, wherein the set of logical channels
  • the data packets have the same destination address, or have the same source address and destination address pair; determine multiple Sidelink processes with the same resource scheduling period as the set of Sidelink processes.
  • each of the above modules may be implemented by software or hardware.
  • the foregoing may be implemented by, but not limited to, the foregoing modules are all located in the same processor; or, the above modules are in any combination.
  • the forms are located in different processors.
  • an electronic device comprising a memory and a processor, wherein the memory stores a computer program, the processor being arranged to execute the computer program to perform the above embodiment The method described in one item.
  • a storage medium having stored therein a computer program, wherein the computer program is configured to execute the method described in any one of the above embodiments .
  • modules or steps of the present application described above may be implemented by a general-purpose computing device, which may be centralized on a single computing device or distributed over a network of multiple computing devices. In an embodiment, they may be implemented in program code executable by a computing device such that they may be stored in a storage device for execution by the computing device and, in some cases, may be different than the order herein.
  • the steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module.
  • the application is not limited to any particular combination of hardware and software.

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Abstract

本申请提供了一种选择资源的方法及装置，其中，该方法包括：在至少一个载波上，发起至少一个边链路Sidelink进程；确定所述至少一个Sidelink进程为一组Sidelink进程；依据预设规则触发所述一组Sidelink进程的资源选择。

Description

选择资源的方法及装置
本申请要求在2018年02月05日提交中国专利局、申请号为201810111550.9的中国专利申请的优先权，该申请的全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信领域，例如涉及一种选择资源的方法及装置。
背景技术
在相关技术中，在边链路(Sidelink)通信系统中，用户终端(User Equipment，UE)之间有业务需要传输时，UE之间的业务数据不经过网络侧的转发，而是直接由数据源UE通过Sidelink传输给目标UE。图1是根据相关技术的Sidelink通信结构的示意图。另外，根据通信资源的获得方法，Sidelink通信可以分为两大类通信模式，第一类模式中UE发送Sidelink信号的资源来自于基站的调度，而第二类模式中，UE在配置或者预配置的资源池(resource pool)中，根据资源选择策略，自主地选择资源的通信方式。资源选择策略主要包括：传感(sensing)机制，部分传感(partial sensing)机制，随机选择(random selection)机制。
随着车联网，直连通信需求的增长，市场对Sidelink通信系统的要求也在不断提高，例如为了提高速率或可靠性，需要Sidelink通信可以支持载波聚合(carrier aggregation，CA)，即使用多个载波进行并行传输，这里的并行可以是同时的也可以是分时的。然而，相关技术中在载波聚合场景下将面临一些困难，例如相关技术以Sidelink进程为主体进行，而一个Sidelink进程所使用的资源属于同一个载波，若载波聚合中的每个载波上的Sidelink进程都独立的触发资源选择和重选，将会面临严重的半双工(目前标准和行业现状一般假定终端UE不支持同时进行收发)情况。
上述情况具体如下，首先，如果不同载波在不同的时刻触发资源选择或重选，那么在基于sensing的资源选择策略下，不同载波很大概率上要选择不同时刻的资源，这是因为半双工的限制会导致已被其他载波选择的时间资源(子帧)上，UE无法进行sensing(sensing类似于接收，如果在其他载波上使用该时间进行发送，那么由于半双工就无法进行sensing)，无法sensing的资源是不能作为 候选资源供UE选择的。例如，聚合的载波(component carrier，CC)，假设UE聚合2个载波进行发送，记为CC#1，CC#2，如果CC#1首先进行资源选择，假设选择子帧1时刻，那么子帧1时刻上有CC#1的发送，则在子帧1上，CC#2就无法进行sensing，UE如果接下来在CC#2上进行资源选择，只能选择不同于子帧1的子帧。这样UE的发送将占用更长的时域长度，同时由于半双工情况，UE在更长的时域长度发送时，则UE在所述时域长度上无法进行sensing，而无法sensing的资源根据相关sensing机制将不能选作传输资源，同时UE也无法在所述时域长度上进行接收，从而导致丢失更多其他UE发送的数据包。在聚合的载波数越多的情况下，这种问题更严重。
在Sidelink通信系统中，UE之间使用Sidelink资源进行信息的传输，根据具体的应用场景及业务类型等，Sidelink通信方式包括设备到设备(Device to Device，D2D)通信，车辆到车辆(Vehicle to Vehicle，V2V)通信等。在Sidelink通信中，网络侧为UE配置Sidelink资源池，或者由系统预配置Sidelink资源池，UE使用Sidelink资源池中的资源承载Sidelink信息。
相关技术中，当UE在配置或者预配置的资源池(resource pool)中，根据资源选择策略，自主地选择资源进行通信时，是以Sidelink进程(Sidelink process)为粒度进行资源的选择和重选。由于Sidelink通信中一类重要的业务就是周期的广播业务，对于这类业务，选择资源时，UE一般选择一组周期性出现的资源来承载该类业务使用的Sidelink进程，这一组资源可以称为一个Sidelink授权(Sidelink grant)。UE进行自主资源选择，可能会发生UE之间选择相同资源的情况，即资源选择冲突，如果UE选择一组周期资源后不再改变资源位置，可能会造成持续性的资源冲突，让UE进行资源重选则可以一定程度上避免该情况。因此相关技术定义了一系列的资源选择和重选的触发条件，用于触发资源选择和重选。
图2是根据相关技术中资源选择后的每个Sidelink进程独立进行资源选择和重选的示意图。如图2所示，上述资源选择和重选的触发条件针对每个Sidelink进程独立进行，当某个Sidelink进程的触发条件满足时，则触发对应Sidelink进程的资源选择/重选，资源选择/重选可以由UE的媒体方位控制(Media Access Control，MAC)实体或者混合自动重传请求(Hybrid Automatic Repeat reQuest，HARQ)实体执行，这里不做限定。上述各个Sidelink进程独立的触发条件触发 的资源选择/重选在载波聚合场景下很大概率会出现半双工情况。
针对相关技术中载波聚合中的每个载波的Sidelink的进程独立进行，导致严重的半双工情况，目前还没有有效的解决方案。
发明内容
以下是对本文详细描述的主题的概述。本概述并非是为了限制权利要求的保护范围。
本申请实施例提供了一种选择资源的方法及装置，以避免相关技术中载波聚合中的每个载波的Sidelink的进程独立进行，导致严重的半双工情况。
根据本申请的一个实施例，提供了一种一种选择资源的方法，包括：在至少一个载波上，发起至少一个边链路Sidelink进程；确定所述至少一个Sidelink进程为一组Sidelink进程；依据预设规则触发所述一组Sidelink进程的资源选择。
根据本申请的另一个实施例，还提供了一种选择资源的装置，该装置包括：发起模块，设置为在至少一个载波上，发起至少一个边链路Sidelink进程；确定模块，设置为确定所述至少一个Sidelink进程为一组Sidelink进程；触发模块，设置为依据预设规则触发所述一组Sidelink进程的资源选择。
根据本申请的又一个实施例，还提供了一种存储介质，所述存储介质中存储有计算机程序，其中，所述计算机程序被设置为运行时执行上述任一项方法实施例中的步骤。
根据本申请的又一个实施例，还提供了一种电子装置，包括存储器和处理器，所述存储器中存储有计算机程序，所述处理器被设置为运行所述计算机程序以执行上述任一项方法实施例中的步骤。
在阅读并理解了附图和详细描述后，可以明白其他方面。
附图说明
此处所说明的附图用来提供对本申请的进一步理解，构成本申请的一部分，本申请的示意性实施例及其说明用于解释本申请，并不构成对本申请的不当限定。在附图中：
图1是根据相关技术的Sidelink通信结构的示意图；
图2是根据相关技术中资源选择后的每个Sidelink进程独立进行资源选择和 重选的示意图；
图3是本申请实施例的一种选择资源方法的移动终端的硬件结构框图；
图4是根据本申请实施例的选择资源的方法流程图；
图5是根据本申请示例实施例的一个进程可以直接触发另一进程的资源选择和重选中的至少一种的示意图；
图6是根据本申请示例实施例的设置计时器或计数器触发Sidelink进程的资源选择或重选的示意图。
具体实施方式
下文中将参考附图并结合实施例来详细说明本申请。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。
需要说明的是，本申请的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。
实施例一
本申请实施例的技术方案可以应用于点对点通信，例如D2D通信，V2V通信等场景。需要说明的是，本申请实施例中提供的上述信息传输方法的运行环境并不限于上述网络架构。
本申请实施例一所提供的方法实施例可以在移动终端、计算机终端或者类似的运算装置中执行。以运行在移动终端上为例，图3是本申请实施例的一种选择资源方法的移动终端的硬件结构框图。如图3所示，移动终端30可以包括至少一个(图3中仅示出一个)处理器302，处理器302可以包括但不限于微处理器(Microcontroller Unit，MCU)或可编程逻辑器件(Field-Programmable Gate Array，FPGA)等的处理装置，和设置为存储数据的存储器304，在一实施例中，上述移动终端还可以包括设置为通信功能的传输设备306。本领域普通技术人员可以理解，图3所示的结构仅为示意，其并不对上述移动终端的结构造成限定。例如，移动终端30还可包括比图3中所示更多或者更少的组件，或者具有与图3所示不同的配置。
存储器304可设置为存储应用软件的软件程序以及模块，如本申请实施例中的选择资源的方法对应的程序指令/模块，处理器302通过运行存储在存储器304内的软件程序以及模块，从而执行各种功能应用以及数据处理，即实现上述 的方法。存储器304可包括高速随机存储器，还可包括非易失性存储器，如至少一个磁性存储装置、闪存、或者其他非易失性固态存储器。在一些实例中，存储器304可进一步包括相对于处理器302远程设置的存储器，这些远程存储器可以通过网络连接至移动终端30。上述网络的实例包括但不限于互联网、企业内部网、局域网、移动通信网及其组合。
传输设备306设置为经由一个网络接收或者发送数据。上述的网络具体实例可包括移动终端30的通信供应商提供的无线网络。在一个实例中，传输设备306包括一个网络适配器(Network Interface Controller，NIC)，其可通过基站与其他网络设备相连从而可与互联网进行通讯。在一个实例中，传输设备306可以为射频(Radio Frequency，RF)模块，其设置为通过无线方式与互联网进行通讯。
在本实施例中提供了一种运行于上述移动终端的选择资源的方法，图4是根据本申请实施例的选择资源的方法流程图，如图4所示，该流程包括步骤S402，步骤S404和步骤S406。
在步骤S402中，在至少一个载波上，发起至少一个边链路Sidelink进程。
在步骤S404中，确定该至少一个Sidelink进程为一组Sidelink进程。
在步骤S406中，依据预设规则触发该一组Sidelink进程的资源选择。
需要补充的是，本申请文件中的资源选择还包括资源重选。在一实施例中，在一个载波上发起至少一个Sidelink进程，或者在多个载波上发起至少一个Sidelink进程。
通过上述步骤，在至少一个载波上，发起至少一个边链路Sidelink进程；确定该至少一个Sidelink进程为一组Sidelink进程；依据预设规则触发该一组Sidelink进程的资源选择。避免了相关技术中载波聚合中的每个载波的Sidelink的进程独立进行，导致严重的半双工情况，实现了针对一组Sidelink进程进行资源选择，避免了每个载波的Sidelink进程独立进行，避免了严重的半双工情况。
在一实施例中，上述步骤的执行主体可以为终端或车辆等，但不限于此。
在一实施例中，步骤S402、步骤S404和步骤S406的执行顺序是可以互换的，即可以先执行步骤S404，然后再执行S402。
在一实施例中，依据预设规则触发该一组Sidelink进程的资源选择，包括以下至少之一：基于确定该一组Sidelink进程中的一个Sidelink进程触发了资源选 择，触发该一组Sidelink进程进行资源选择；依据预先为该一组Sidelink进程配置的计数器或计时器，触发该一组Sidelink进程进行资源选择；基于确定该一组Sidelink进程对应的载波选择或资源池发生改变，触发该一组Sidelink进程进行资源选择。
在一实施例中，确定该一组Sidelink进程中的一个Sidelink进程触发了资源选择，触发该一组Sidelink进程进行资源选择，包括以下之一：确定该一个Sidelink进程触发了资源选择，作为该一组Sidelink进程中其他Sidelink进程进行资源选择的触发条件；确定该一组Sidelink进程中的其他Sidelink进程的触发条件，与该一个Sidelink进程的触发条件相同。
在一实施例中，基于确定该一组Sidelink进程中的一个Sidelink进程触发了资源选择，触发该一组Sidelink进程进行资源选择，包括以下至少之一：确定该一个Sidelink为该一组Sidelink进程中的预设小组的Sidelink，在该一个Sidelink进程触发了资源选择后，触发该一组Sidelink进程进行资源选择；在该一个Sidelink进程包括多个触发条件的情况下，允许该多个触发条件中的部分触发条件，触发该一个Sidelink进程和该一组Sidelink进程中其他Sidelink进程进行资源选择；在确定该一个Sidelink进程触发了资源选择后，触发该一组Sidelink进程中的部分Sidelink进程进行资源选择。
在一实施例中，依据预设规则触发该一组Sidelink进程的资源选择，包括：去使能该一组Sidelink进程中的部分Sidelink进程所分别对应的部分触发条件。在一实施例中，该部分Sidelink进程为该一组Sidelink进程中除该一个Sidelink进程外的Sidelink进程。需要补充的是，去使能(disable)触发条件的多个Sidelink进程彼此之间可以是不相同的。举例说明，假设4个进程，每个进程都有7个特有触发条件，disable第一个进程的触发条件1，2，3，disable第二进程的2，3，5。
在一实施例中，去使能Sidelink进程的触发条件的方式，包括以下至少之一：为该Sidelink进程对应的触发条件设置使能标志；响应于去使能该Sidelink进程对应的一个触发条件，设置其使能标志为false；设置该Sidelink进程对应的触发条件的参考数值为预定值。需要补充的是，该参考数值可以是不可用的值，例如国际协议或国际标准规定外的数值，设置效果是触发条件不可能被触发。
在一实施例中，依据预先为该一组Sidelink进程配置的计数器或计时器，触 发该一组Sidelink进程进行资源选择，包括以下之一：在确定该计数器到达预设值后，触发该一组Sidelink进程进行资源选择，其中，该计数器设置为计数该一组Sidelink进程的关联状态变量，或关联操作的操作次数；在确定该计时器到时后，触发该一组Sidelink进程进行资源选择。
在一实施例中，该计数器设置为计数该一组Sidelink进程的关联状态变量，或关联操作的操作次数包括以下之一：该计数器设置为计数该一组Sidelink进程中，部分或全部Sidelink进程独立触发资源选择的次数；该计数器设置为计数该一组Sidelink进程中，部分或全部Sidelink进程进行数据传输的次数；该计数器设置为计数该一组Sidelink进程距离上次资源选择经过的资源周期个数；该计数器设置为计数该一组Sidelink进程在一个资源周期内，占用的资源的个数，其中，该资源包括以下至少之一：时域资源、频域资源、空域资源、码域资源。需要补充的是，该资源周期个数和占用时域的个数，可以是关联状态变量。
在一实施例中，确定该一组Sidelink进程对应的载波选择或资源池发生改变包括以下之一：该一组Sidelink进程对应的资源池配置的同步参考资源发生改变，需要补充的是，包括但不限于同步参考资源的位置、同步参考资源的个数发生了改变；该一组Sidelink进程对应的载波发生了载波或载波集合选择(还可以包括载波重选)，或该一组Sidelink进程所对应的载波的同步参考或同步参考源发生变化。
在一实施例中，该Sidelink进程对应的资源池发生了载波或载波集合选择之前，该方法还包括以下之一：基于该一组Sidelink进程中的一个Sidelink进程触发了资源选择，触发该载波或载波集合选择；该载波集合中的部分载波发生了载波选择，或该一组Sidelink进程中的部分Sidelink进程发生资源选择，触发该载波集合发生载波集合选择；依据预设计数器或计时器，触发该载波或载波集合选择，其中，该计数器设置为计数该一组Sidelink进程的关联操作的操作次数。
在一实施例中，确定该至少一个Sidelink进程为一组Sidelink进程，包括以下之一：确定用于传输同一个逻辑信道的数据的多个Sidelink进程，为该一组Sidelink进程；确定用于传输同一个业务类型的数据的多个Sidelink进程，为该一组Sidelink进程；确定用于传输同一组逻辑信道的数据的多个Sidelink进程，为该一组Sidelink进程，其中，该一组逻辑信道上的数据包具有相同目的地址，或具有相同的源地址和目的地址对；确定具有相同的资源调度周期的多个 Sidelink进程，为该一组Sidelink进程。
下面结合本申请示例实施例进行详细说明。
首先说明的是，对于每个Sidelink进程，下面的任一触发条件满足时，就可以触发该Sidelink进程的资源选择或重选。
触发条件1：该进程的资源重选计数器到0，且生成的随机数a大于配置的资源保持概率(probResourceKeep)，其中a是服从在[0，1]上均匀分布的随机数。
随机数a的生成和比较操作要早于计数器到0时刻，例如计数器到1时就可以进行。具体的，相关技术中为每个Sidelink进程设置一个资源重选计数器，记为SL_RESOURCE_RESLEC TION_COUNTER，当每次选择或重选一组资源时，为该计数器设置一个初始值，该初始值为一个服从均匀分布的随机整数，均匀分布的区间可以根据资源周期的不同而不同，每次数据发送，就将计数器减1。
触发条件2：在已经选择的一组资源上，连续一段时间没有传输，例如连续1秒钟没有传输进行。
触发条件3：类似触发条件2，高层若定义了参数sl-ReselectAfter，且在已选择的Sidelink grant上连续没有进行传输资源数目等于sl-ReselectAfter。
触发条件4：还没有为该Sidelink process选择对应的资源，即还未配置Sidelink grant。这种情况一般为首次资源选择。
触发条件5：配置的Sidelink grant不再满足传输的需求，例如，使用允许的最大调制编码方式(modulation and coding mechanism，MCS)也无法承载数据包，且MAC选择不对数据包进行分割。
触发条件6：配置的Sidelink grant不再满足数据的时延要求，且MAC不想为该业务进行临时的动态调度。
触发条件7：资源池被配置或重配置。
本申请提出了一种资源选择和重选中至少一种的触发方法，针对一组Sidelink进程，具体的方式包括下面方法及其组合。
1.在一组Sidelink进程中，其中一个进程触发了资源选择或重选，则会触发这一组内其他Sidelink进程的资源选择或重选。图5是根据本申请示例实施例的 一个进程可以直接触发另一进程的资源选择和重选中至少一种的示意图。如图5所示，两个进程可以互相触发资源选择和资源重选中的至少一种。
2.为一组Sidelink进程预配置或配置一个计数器，计数一组进程的相关操作的次数，当到达阈值时，触发这一组Sidelink进程的资源选择/重选，所述相关操作可以是资源选择/重选，数据传输，经历的资源周期等。
或者，为一组Sidelink进程预配置或配置一个计时器，计时到达时，触发这一组Sidelink进程的资源选择/重选。图6是根据本申请示例实施例的设置计时器或计数器触发Sidelink进程的资源选择或重选的示意图。如图6所示，计时器或计数器可以触发进程的资源选择或资源重选。
3.一组Sidelink进程所对应的一组资源池发生了变化，如载波进行了重选等。
在Sidelink通信中，可用于发送Sidelink信号的物理资源构成Sidelink资源池，例如用于发送Sidelink控制消息的物理边链路控制信道(physical sidelink control channel，PSCCH)资源池，以及发送Sidelink数据的物理边链路共享信道(physical sidelink sharing channel，PS SCH)资源池。一个Sidelink资源池一般配置在一个载波上，Sidelink进程的资源选择/重选也一般是指在资源池上选择/重选Sidelink资源。由于载波，资源池，Sidelink进程之间有一定的对应关系，在本文描述时不严格进行区分，即一般的描述为多个Sidelink进程的操作，也可以理解为针对多个载波或多个资源池的操作。
方法一、在一组Sidelink进程中，其中一个进程触发了资源选择或重选，则可能会触发这一组内其他Sidelink进程的资源选择或重选。
实例一
UE使用多个Sidelink进程在多个载波上进行传输(需要补充的是，一个载波上也可以有多个Sidelink进程)，配置该多个载波上的多个Sidelink进程为一组Sidelink进程。例如，UE使用N个Sidelink进程进行传输，其中的M个进程组成一组Sidelink进程，记为一个Sidelink进程集合A(Set-A)。例如一种特殊情况为，M个载波CC上一一对应的M个Sidelink进程。组内每个Sidelink进程都有能够触发其进行资源选择/重选的触发条件，例如上述触发条件1～7。并且为了避免半双工情况并合理的在多个载波上为多个进程选择资源，定义一种Sidelink资源选择/重选触发条件为，一旦组内某一个Sidelink进程的资源选择/ 重选的触发条件满足，则同时触发组内其他Sidelink进程的资源选择/重选。
具体的，可以认为组内的Sidelink进程i对应的触发条件也为组内Sidelink进程j的触发条件；或者组内的Sidelink进程i触发了资源选择/重选为组内Sidelink进程j的触发条件。
实例二
如实例一所描述，如果一个Sidelink进程触发了资源选择/重选的同时也触发其他Sidelink进程的资源选择/重选，则可能会造成UE过于频繁的进行资源选择/重选，造成系统负担，实例二提供一种可行的减少资源选择/重选次数的方案。
其一，对于一组Sidelink进程集合，只让集合内的部分Sidelink进程能够触发其他Sidelink进程的资源选择/重选。例如一组Sidelink进程包括进程1，2，3，4，进程1，2设为能够触发其他Sidelink进程进行资源选择的进程，例如当进程1触发了资源选择/重选时，会同时触发Sidelink进程2，3，4进行资源选择，但是进程3的触发条件满足时，则只会触发进程3自己的资源选择/重选。
其二，对于一个Sidelink进程对应的触发条件，可以只让部分触发条件可以触发其他Sidelink进程的资源选择/重选。例如，让触发条件1可以触发其他Sidelink进程的资源选择/重选，而触发条件2～7只能触发所对应的进程的资源选择/重选。
其三，一个触发条件满足时，触发的多个Sidelink进程可以是所述一组Sidelink进程集合的子集。
上述三种方法可以结合使用或单独使用，一种通用的描述可以如下所述：
对于一组包含M个Sidelink进程的集合Set-A(进程1，进程2，...进程M)，对于集合内的一个Sidelink进程i，对应一组该进程关联的资源选择/重选触发条件，记为进程i对应的特有触发条件集合Set-X(i)。则设置一组通用触发条件集合Set-Y(适用于整组Sidelink进程的触发条件叫通用触发条件)，当集合Set-Y中的触发条件j满足时，则触发进程集合Set-A的资源选择/重选，即触发这一组Sidelink进程的资源选择/重选。同时，也可以只触发一组Sidelink进程Set-A中的部分Sidelink进程进行资源选择，例如当通用触发条件j满足时只触发Sidelink进程集合Set-A(j)的资源选择，这里Set-A(j)为Set-A的子集，对应通用触发条件 j能够触发资源选择的Sidelink进程集合。同时，通用触发条件集合来源于一组Sidelink进程中各个进程所特用的触发条件。具体为，可以选择部分Sidelink进程的部分特有触发条件为通用触发条件，Set-Y＝{Set-Y(1)，Set-Y(2)，...Set-Y(M)}，这里的{...}可以理解为取合集的操作。其中Set-Y(i)为Set-X(i)的子集，表示进程i对应的触发条件Set-X(i)中被选为通用触发条件的触发条件集合。
上述过程也可以以一个Sidelink进程为主体进行描述，二者具有等同的效果。需要说明的是，本文中其他实例也可以以一个Sidelink进程为主体进行描述，并达到等同效果，这里只以本实例进行说明但不限制其他实例也使用类似的描述方法，具体为：
对于一个Sidelink进程i，若下面的触发条件满足时，触发该Sidelink进程的资源选择/重选。相关技术中的触发条件满足，例如该Sidelink进程对应的特有触发条件集合Set-X(i)中的触发条件任一满足(触发条件1，2，...7)；新定义的通用触发条件满足，例如Set-Y中的触发条件满足，也等同于其他Sidelink进程进行资源选择/重选(触发条件属于Set-Y)，虽然该触发条件适用于多个Sidelink进程，但是从每个Sidelink进程的资源选择/重选的触发过程来描述也具备相同效果。
上述方法中，若Set-Y包含所有的Sidelink进程所对应的所有触发条件，且若触发条件满足则始终触发所有的Sidelink进程的资源选择/重选，则等同于实例一的描述。
实例三
如实例一及实例二所述，一个Sidelink进程的资源选择/重选可以由该Sidelink进程所对应的触发条件所触发，也可以由其他Sidelink进程的触发条件或者上述通用触发条件所触发。本实例来说明在新定义的触发条件下来触发多个Sidelink进程进行资源选择/重选的同时，还可以减少已有的每个Sidelink进程所对应的特有触发条件所触发的资源选择/重选。例如，去使能(disable)一个Sidelink进程所对应的触发条件对资源选择/重选的触发。这样可以减少各个Sidelink进程独立的资源选择/重选，进一步降低半双工情况。以触发条件1，使用资源重选计数器和配置的资源保持概率(probResourceKeep)为例，其具体方法为：
Sidelink进程#1，#2，#3，#4为一组Sidelink进程，使能Sidelink进程#1的触发条件1并作为通用触发条件触发Sidelink进程#1，#2，#3，#4进程资源选择/重选的触发条件，并且去使能Sidelink进程#2，#3，#4的对应的触发条件1，或者去使能Sidelink进程#2的触发条件2。在一实施例中，哪个触发条件作为通用触发条件，和去使能哪个通用触发条件并没有必然的联系。
对于Sidelink进程#1，#2，#3，#4，若Sidelink进程#1的资源重选计数器到0，且生成的随机数a大于配置的资源保持概率(probResourceKeep)，则触发进程#1，#2，#3，#4的资源选择/重选。并且Sidelink进程#2，#3，#4不会再被其各自对应的触发条件1所触发资源选择/重选。
去使能一个Sidelink进程所对应的触发条件的方法可以为：
1)为触发条件增加使能标志，设为错误(false)时，该触发条件去使能。
2)将原触发条件的参数设置为特殊值。具体的对于触发条件1，相关技术为UE设置统一的资源保持概率(probResourceKeep)，且其值小于1。本实例中，可以将资源保持概率(probResourceKeep)设为1或大于1，去使能所有Sidelink进程的触发条件1，也可以为UE的每个Sidelink进程/载波/资源池设置一个资源保持概率(probResourceKeep)，且其值可以设为1或大于1(表示资源一直保持)。例如将某个Sidelink进程/载波/资源池对应的probResourceKeep设为1时，表示去使能所述Sidelink进程或去使能所述载波/资源池上的Sidelink进程的触发条件1。另外，也可以将一个Sidelink进程的资源重选计数器的初始值或初始值的随机区间设为特殊值(可以设置为不可用的值)，表示去使能触发条件1。
方法二、为一组Sidelink进程预配置/配置一个计数器/计时器。
不同于方法一，方法二不使用各个Sidelink进程已有的某个触发条件作为多个Sidelink进程的共同的触发条件，而是为一组Sidelink进程引入新的触发条件。
实例四
为一组Sidelink进程预配置/配置一个计数器，计数一组进程的资源选择/重选的次数，当到达阈值时，触发这一组Sidelink进程的资源选择/重选，具体的如下面所例示：
Sidelink进程#1，#2，#3，#4为一组Sidelink进程，记为Set-A，为这一组Sidelink进程设置一个资源选择/重选次数计数器，计数所有4个Sidelink进程独 立触发各自资源选择/重选的次数，这种计数可以是递增计数或递减计数。例如将计数器的初始值设为3，则若Sidelink进程#1，#2，#3，#4任意一个进程触发了资源选择/重选，则所述计数器减1，直到为0时，触发Sidelink进程#1，#2，#3，#4进行资源选择/重选。再例如，将计数器的初始值设为1，Sidelink进程#1，#2，#3，#4任意一个进程触发了资源选择/重选，则触发Sidelink进程#1，#2，#3，#4进行资源选择/重选
进一步地，需要说明的是，应用于本申请所有实施例中，若触发一组Sidelink进程进行资源选择/重选，则可以重置所有Sidelink进程的资源重选计数器(SL_RESOURCE_RESLEC TION_COUNTER)。
上述实例中，资源选择/重选次数计数器也可以只计数部分Sidelink进程的资源选择/重选次数，例如只计数Sidelink进程#1，#2的资源选择/重选次数，即计数Sidelink进程集合Set-B内所有进程的资源选择/重选次数，Set-B为Set-A的子集。
实例五
为一组Sidelink进程预配置/配置一个计数器，但不同于实例四，计数的量可以不是一组进程的资源选择/重选的次数，可以是这一组进程的其他参量，例如这一组进程中部分或全部进程进行传输的次数，或者，距离这一组进程前次的资源选择/重选经过的资源周期个数，资源周期为一个时间粒度，表示周期传输的数据两次传输之间的间隔。具体的，例如为一组Sidelink进程设置一个counter，预配置或在一个值域范围内随机选择一个值为计数器初始值，一组进程内满足上述计数参数的计数条件后则递减计数器，计数器至0触发所有进程资源选择/重选。或者预配置或在一个值域范围内随机选择一个值为计数器阈值，若一组进程内满足上述计数参数的计数条件后则递增计数器计数器至阈值触发所有进程资源选择/重选。
或者该计数器与当前的一组Sidelink进程的某些状态参量相关联，在多个载波上占用更多的子帧将会带来更大的半双工情况，若各个载波上传输的子帧能够在同一个子帧则会减轻半双工情况。设置一个计数器参量，计数上述一个资源周期内，占用的时域资源(子帧/时隙)的比例或个数(或者是其他资源，例如频域资源，空域资源，码域资源)，并设置一个阈值，该阈值可以是一个占用比例，也可以是一个占用子帧数目。若占用过多的时域资源，即上述计数的时 域资源比例或个数超过阈值时，触发这一组Sidelink进程的资源选择/重选。例如一组Sidelink进程#1，#2，#3，#4分别在4个载波上进行数据，且传输的资源周期为20毫秒(20ms)，设置占用阈值为8或者比例为0.4(占用个数8/资源周期20)，则当一组Sidelink进程的占用的时域子帧的个数达到8时，则触发所述一组Sidelink进程进行资源选择/重选。
实例六
为一组Sidelink进程预配置/配置一个计时器，计时到达时，触发这一组Sidelink进程的资源选择/重选，并重置计时器的到初始值重新计时，即通过计时器周期性触发一组Sidelink进程进行资源选择/重选。
这里要说明的是，本文件中的所有实例在不发生冲突的情况下都可以和实例三中所述的去使能相关触发条件的方法相结合，例如可使用实例六中所述的计时器的方法触发一组Sidelink进程的资源选择/重选，并且使用实例三的方法去使能这一组Sidelink进程本身原来的触发条件1。
方法三、一组Sidelink进程所对应的一组资源发生了变化，如载波进行了重选等。
实例七
载波聚合是指使用多个载波进程传输的技术，Sidelink也可以使用载波聚合技术，一种典型的载波聚合使用方法为，UE在多个载波上进行多个Sidelink进程的传输，例如UE发送一个业务并使用Sidelink进程#1，#2，#3，#4进行传输，假设Sidelink进程#1，#2，#3，#4分别使用载波CC#1，CC#2，CC#3，CC#4上的资源。
UE使用的载波一般并不是不变的，随着各个载波的资源占用情况(Channel Busy Ratio，CBR)，UE能力限制，要发送的业务等因素的变化，UE可以在不同时刻选择不同的载波集合进行传输，即载波聚合的一个方面包括载波的选择/重选。同时Sidelink进程的资源选择/重选时，可能会触发重选新的载波。当一组Sidelink进程所对应的载波集合发生载波重选时，则会触发所有进程的资源重选。即UE使用的载波集合的变化会造成UE要在新的载波集合上选择新的资源进行数据传输，所以，Sidelink进程的资源选择/重选可以由载波的选择/重选触发。
所以，本实例中，一种新的Sidelink进程的资源选择/重选的触发条件可以为：
UE进行了载波选择/重选，或者UE使用的载波集合发生了变化。即，载波选择/重选可以触发一组Sidelink进程进行资源的选择/重选。
实例八
所述实例一至实例六中描述了一组Sidelink进程的资源选择/重选的触发条件，由于资源选择/重选可能触发载波选择/重选，则上面的实例的资源选择/重选触发条件也可以直接作为载波重选的触发条件，载波重选进一步造成资源的重选。例如，载波选择/重选的触发条件包括但不限于：
1)类似实例一，载波的选择/重选可以由这些载波上承载的Sidelink进程的资源选择/重选来触发。假设，UE发送一个业务并使用Sidelink进程#1，#2，#3，#4进行传输，假设Sidelink进程#1，#2，#3，#4分别使用载波CC#1，CC#2，CC#3，CC#4上的资源，假设Sidelink进程#1进行了资源重选，且该资源重选触发了载波重选，载波重选结果为载波CC#1，CC#2，CC#3，载波集合的变化作为触发所述一组Sidelink进程进行资源重选的触发条件，即上述Sidelink进程#1，#2，#3，#4需要选择新的资源继续传输数据，例如上述对应于CC#4的Sidelink进程可以切换到其他载波，或释放对应于CC#4的sidelink进程，生成一个新的进程(新进程位于载波CC#1，CC#2，CC#3上)承载原来的Sidelink进程的数据等。
2)类似实例二，可以定义一个载波集合或者Sidelink进程集合，只有当这些载波/进程上的资源选择/重选才可以触发载波选择/重选。
3)类似实例四，五，六，可以定义一个计数器/计时器，按照一组Sidelink进程的状态/操作触发载波选择/重选，或者定义一个计时器，定时触发载波选择/重选。
除了上述资源选择/重选触发的载波选择/重选，载波选择/重选的触发还可以考虑各个载波的资源占用情况，UE能力限制，要发送的业务等因素的变化，这不是本文的重点，这里不再叙述。不论载波选择/重选由什么触发条件触发，都可以如实例七所述触发一组Sidelink进程的资源选择/重选。
实例九
在某些情况下，载波虽然没有进行重选，但是载波上的资源池也可能发生 了变化，此时也可能触发对应载波的Sidelink进程进行资源选择/重选。例如Sidelink的载波聚合情况下，多个载波的同步参考或者同步参考源可能发生变化，从而导致这些载波上的资源池发生变化，则需要进行资源选择/重选。具体的：
用于载波聚合的载波的同步参考(synchronization reference)或者使用的同步参考源(synchronization source)发生了变化，例如当前聚合的载波的定时从(Global Navigation Satellite System，GNSS)定时切换到了基站定时。例如，UE发送一个业务并使用载波CC#1，CC#2，CC#3，CC#4上的资源，载波CC#1，CC#2，CC#3，CC#4的定时是一致的，例如开始时，都使用GNSS定时，但是由于UE的移动，GNSS定时变的不可靠，聚合的载波从GNSS定时切换到了基站定时，虽然载波集合没有改变，但是使用的定时发生了改变。则这些聚合载波上的Sidelink进要重新进行资源选择。
实例十
本实例用于说明实例一至实例九中的一组Sidelink进程的选取标准，具体的：
所述一组Sidelink进程用于传输同一个逻辑信道的数据。一个典型的例子为，一个逻辑信道可以在多个载波上传输，那么在每个载波上建立一个Sidelink进程用于传输该逻辑信道的数据。或者，
所述一组Sidelink进程用于传输同一个业务类型的数据，一个典型的例子为，可以为一个业务建立至少一个逻辑信道，并且在多个载波上传输这些数据，那么可以在每个载波上建立一个Sidelink进程用于传输所述至少一个逻辑信道的数据。或者，
所述一组Sidelink进程用于传输同一组逻辑信道的数据，这一组逻辑信道上的数据包具有相同目的地址(destination ID)或者源地址/目的地址对(source ID destination ID pair)。一个典型的例子为，若多个逻辑信的数据包道具有相同的目的地址，则这些数据包可以聚合在同一个数据单元里面进行发送，则如果这些逻辑信道的数据在多个载波上传输，那么可以在每个载波上建立一个Sidelink进程用于传输所述至少一个逻辑信道的数据。或者，
所述一组Sidelink进程具有相同的资源调度周期。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到根据上述实施例的方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件。基于这样的理解，本申请的技术方案本质上或者说对相关技术做出 贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质，例如如只读内存/随机存取存储器(Read Only Memory/Random Access Memory，ROM/RAM)、磁碟、光盘中，包括若干指令用以使得一台终端设备(可以是手机，计算机，服务器，或者网络设备等)执行本申请各个实施例所述的方法。
实施例二
在本实施例中还提供了一种选择资源的装置，该装置设置为实现上述实施例及示例实施方式，已经进行过说明的不再赘述。如以下所使用的，术语“模块”可以实现预定功能的软件和硬件中至少一种的组合。以下实施例所描述的装置可以以软件来实现，但是硬件，或者软件和硬件的组合的实现也是可能并被构想的。
根据本申请的另一个实施例，还提供了一种选择资源的装置，包括发起模块，确定模块和触发模块。
发起模块，设置为在至少一个载波上，发起至少一个边链路Sidelink进程。
确定模块，设置为确定该至少一个Sidelink进程为一组Sidelink进程。
触发模块，设置为依据预设规则触发该一组Sidelink进程的资源选择。
在一实施例中，在一个载波上发起至少一个Sidelink进程，或者在多个载波上发起至少一个Sidelink进程。
采用上述技术方案，避免了相关技术中载波聚合中的每个载波的Sidelink的进程独立进行，导致严重的半双工情况，实现了针对一组Sidelink进程进行资源选择，避免了每个载波的Sidelink进程独立进行，避免了严重的半双工情况。
在一实施例中，依据预设规则触发该一组Sidelink进程的资源选择，包括以下至少之一：确定该一组Sidelink进程中的一个Sidelink进程触发了资源选择，触发该一组Sidelink进程进行资源选择；依据预先为该一组Sidelink进程配置的计数器或计时器，触发该一组Sidelink进程进行资源选择；确定该一组Sidelink进程对应的载波选择或资源池发生改变，触发该一组Sidelink进程进行资源选择。
在一实施例中，确定该一组Sidelink进程中的一个Sidelink进程触发了资源选择，触发该一组Sidelink进程进行资源选择，包括以下之一：确定该一个Sidelink进程触发了资源选择，作为该一组Sidelink进程中其他Sidelink进程进 行资源选择的触发条件；确定该一组Sidelink进程中的其他Sidelink进程的触发条件，与该一个Sidelink进程的触发条件相同。
在一实施例中，确定该一组Sidelink进程中的一个Sidelink进程触发了资源选择，触发该一组Sidelink进程进行资源选择，包括以下至少之一：确定该一个Sidelink为该一组Sidelink进程中的预设小组的Sidelink，在该一个Sidelink进程触发了资源选择后，触发该一组Sidelink进程进行资源选择；在该一个Sidelink进程包括多个触发条件的情况下，允许该多个触发条件中的部分触发条件，触发该一个Sidelink进程，和该一组Sidelink进程中其他Sidelink进程进行资源选择；在确定该一个Sidelink进程触发了资源选择后，触发该一组Sidelink进程中的部分Sidelink进程进行资源选择。
在一实施例中，依据预设规则触发该一组Sidelink进程的资源选择，包括：去使能该一组Sidelink进程中的部分Sidelink进程所分别对应的部分触发条件。在一实施例中，该部分Sidelink进程为该一组Sidelink进程中除该一个Sidelink进程外的Sidelink进程。
在一实施例中，去使能Sidelink进程的触发条件的方式，包括以下至少之一：为该Sidelink进程对应的触发条件设置使能标志；响应于去使能该Sidelink进程对应的一个触发条件，设置其使能标志为false；设置该Sidelink进程对应的触发条件的参考数值为预定值。
在一实施例中，依据预先为该一组Sidelink进程配置的计数器或计时器，触发该一组Sidelink进程进行资源选择，包括以下之一：在确定该计数器到达预设值后，触发该一组Sidelink进程进行资源选择，其中，该计数器设置为计数该一组Sidelink进程的关联状态变量，或关联操作的操作次数；在确定该计时器到时后，触发该一组Sidelink进程进行资源选择。
在一实施例中，该计数器设置为计数该一组Sidelink进程的关联状态变量，或关联操作的操作次数包括以下之一：该计数器设置为计数该一组Sidelink进程中，部分或全部Sidelink进程独立触发资源选择的次数；该计数器设置为计数该一组Sidelink进程中，部分或全部Sidelink进程进行数据传输的次数；该计数器设置为计数该一组Sidelink进程距离上次资源选择经过的资源周期个数；该计数器设置为计数该一组Sidelink进程在一个资源周期内，占用的资源的个数，其中，该资源包括以下至少之一：时域资源、频域资源、空域资源、码域资源。
在一实施例中，确定该一组Sidelink进程对应的载波选择或资源池发生改变包括以下之一：该一组Sidelink进程对应的资源池配置的同步参考资源发生改变；该一组Sidelink进程对应的载波发生了载波或载波集合选择，或该一组Sidelink进程所对应的载波的同步参考或同步参考源发生变化。
在一实施例中，该Sidelink进程对应的资源池发生了载波或载波集合选择之前，该方法还包括以下之一：基于该一组Sidelink进程中的一个Sidelink进程触发了资源选择，触发该载波或载波集合选择；该载波集合中的部分载波发生了载波选择，或该一组Sidelink进程中的部分Sidelink进程发生资源选择，触发该载波集合发生载波集合选择；依据预设计数器或计时器，触发该载波或载波集合选择，其中，该计数器设置为计数该一组Sidelink进程的关联操作的操作次数。
在一实施例中，确定该至少一个Sidelink进程为一组Sidelink进程，包括以下之一：确定用于传输同一个逻辑信道的数据的多个Sidelink进程，为该一组Sidelink进程；确定用于传输同一个业务类型的数据的多个Sidelink进程，为该一组Sidelink进程；确定用于传输同一组逻辑信道的数据的多个Sidelink进程，为该一组Sidelink进程，其中，该一组逻辑信道上的数据包具有相同目的地址，或，具有相同的源地址和目的地址对；确定具有相同的资源调度周期的多个Sidelink进程，为该一组Sidelink进程。
需要说明的是，上述各个模块是可以通过软件或硬件来实现的，对于后者，可以通过以下方式实现，但不限于此：上述模块均位于同一处理器中；或者，上述各个模块以任意组合的形式分别位于不同的处理器中。
实施例三
根据本申请的另一个实施例，还提供了一种电子装置，包括存储器和处理器，所述存储器中存储有计算机程序，所述处理器被设置为运行所述计算机程序以执行上述实施例任一项中所述的方法。
实施例四
根据本申请的另一个实施例，还提供了一种存储介质，所述存储介质中存储有计算机程序，其中，所述计算机程序被设置为运行时执行上述实施例任一项中所述的方法。
在一实施例中，本实施例中的具体示例可以参考上述实施例及实施方式中所描述的示例，本实施例在此不再赘述。
在一实施例中，本实施例中的具体示例可以参考上述实施例及实施方式中所描述的示例，本实施例在此不再赘述。
本领域的技术人员应该明白，上述的本申请的各模块或各步骤可以用通用的计算装置来实现，它们可以集中在单个的计算装置上，或者分布在多个计算装置所组成的网络上，在一实施例中，它们可以用计算装置可执行的程序代码来实现，从而，可以将它们存储在存储装置中由计算装置来执行，并且在某些情况下，可以以不同于此处的顺序执行所示出或描述的步骤，或者将它们分别制作成各个集成电路模块，或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。这样，本申请不限制于任何特定的硬件和软件结合。

Claims (15)

  1. 一种选择资源的方法，包括：
    在至少一个载波上，发起至少一个边链路Sidelink进程；
    确定所述至少一个Sidelink进程为一组Sidelink进程；
    依据预设规则触发所述一组Sidelink进程的资源选择。
  2. 根据权利要求1所述的方法，其中，依据预设规则触发所述一组Sidelink进程的资源选择，包括以下至少之一：
    基于确定所述一组Sidelink进程中的一个Sidelink进程触发了资源选择，触发所述一组Sidelink进程进行资源选择；
    依据预先为所述一组Sidelink进程配置的计数器或计时器，触发所述一组Sidelink进程进行资源选择；
    基于确定所述一组Sidelink进程对应的载波选择或资源池发生改变，触发所述一组Sidelink进程进行资源选择。
  3. 根据权利要求2所述的方法，其中，基于确定所述一组Sidelink进程中的一个Sidelink进程触发了资源选择，触发所述一组Sidelink进程进行资源选择，包括以下之一：
    确定所述一个Sidelink进程触发了资源选择，作为所述一组Sidelink进程中除所述一个Sidelink进程之外的其他Sidelink进程进行资源选择的触发条件；
    确定所述一组Sidelink进程中除所述一个Sidelink进程之外的其他Sidelink进程的触发条件，与所述一个Sidelink进程的触发条件相同。
  4. 根据权利要求2所述的方法，其中，基于确定所述一组Sidelink进程中的一个Sidelink进程触发了资源选择，触发所述一组Sidelink进程进行资源选择，包括以下至少之一：
    基于确定所述一个Sidelink为所述一组Sidelink进程中的预设小组的Sidelink，在所述一个Sidelink进程触发了资源选择后，触发所述一组Sidelink进程进行资源选择；
    在所述一个Sidelink进程包括多个触发条件的情况下，允许所述多个触发条件中的部分触发条件，触发所述一个Sidelink进程和所述一组Sidelink进程中除所述一个Sidelink进程之外的其他Sidelink进程进行资源选择；
    在确定所述一个Sidelink进程触发了资源选择后，触发所述一组Sidelink进程中的部分Sidelink进程进行资源选择。
  5. 根据权利要求1所述的方法，其中，依据预设规则触发所述一组Sidelink进程的资源选择，包括：
    去使能所述一组Sidelink进程中的部分Sidelink进程所分别对应的部分触发条件。
  6. 根据权利要求5所述的方法，其中，去使能Sidelink进程的触发条件的方式，包括以下至少之一：
    为所述Sidelink进程对应的触发条件设置使能标志；响应于去使能所述Sidelink进程对应的一个触发条件，设置所述一个触发条件的使能标志为错误(false)；
    设置所述Sidelink进程对应的触发条件的参考数值为预定值。
  7. 根据权利要求2所述的方法，其中，依据预先为所述一组Sidelink进程配置的计数器或计时器，触发所述一组Sidelink进程进行资源选择，包括以下之一：
    在确定所述计数器到达预设值后，触发所述一组Sidelink进程进行资源选择，其中，所述计数器设置为计数所述一组Sidelink进程的关联状态变量，或关联操作的操作次数；
    在确定所述计时器到时后，触发所述一组Sidelink进程进行资源选择。
  8. 根据权利要求7所述的方法，其中，所述计数器设置为计数所述一组Sidelink进程的关联状态变量，或关联操作的操作次数包括以下之一：
    所述计数器设置为计数所述一组Sidelink进程中，部分或全部Sidelink进程独立触发资源选择的次数；
    所述计数器设置为计数所述一组Sidelink进程中，部分或全部Sidelink进程进行数据传输的次数；
    所述计数器设置为计数所述一组Sidelink进程距离上次资源选择经过的资源周期个数；
    所述计数器设置为计数所述一组Sidelink进程在一个资源周期内，占用的资源的个数，其中，所述资源包括以下至少之一：时域资源、频域资源、空域资源、码域资源。
  9. 根据权利要求2所述的方法，其中，确定所述一组Sidelink进程对应的载波选择或资源池发生改变包括以下之一：
    所述一组Sidelink进程对应的资源池配置的同步参考资源发生改变；
    所述一组Sidelink进程对应的载波发生了载波选择或载波集合选择，或所述一组Sidelink进程所对应的载波的同步参考或同步参考源发生变化。
  10. 根据权利要求9所述的方法，其中，在确定所述Sidelink进程对应的资源池发生了载波选择或载波集合选择之前，所述方法还包括以下之一：
    响应于满足所述一组Sidelink进程中的一个Sidelink进程的资源选择的触发条件，触发所述载波选择或载波集合选择；
    所述载波集合中的部分载波发生了载波选择，或所述一组Sidelink进程中的部分Sidelink进程发生资源选择，触发所述载波集合发生载波集合选择；
    依据预设计数器或计时器，触发所述载波选择或载波集合选择，其中，所述计数器设置为计数所述一组Sidelink进程的关联操作的操作次数。
  11. 根据权利要求10所述的方法，其中所述资源选择的触发条件包括以下之一：
    所述Sidelink进程的资源重选计数器到0，且生成的在[0，1]上均匀分布的随机数大于配置的资源保持概率；
    在已选择的一组资源上，预设时间内没有数据传输；
    高层定义参数sl-ReselectAfter，且在已选择的边链路授权Sidelink grant上连续没有进行传输的资源数目等于所述sl-ReselectAfter；
    没有为所述Sidelink进程选择对应的资源；
    配置的Sidelink grant不再满足传输的需求，且媒体方位控制MAC选择不对数据包进行分割；
    所述配置的Sidelink grant不再满足数据的时延要求，且所述MAC不为业务进行临时的动态调度；
    资源池被配置。
  12. 根据权利要求1所述的方法，其中，确定所述至少一个Sidelink进程为一组Sidelink进程，包括以下之一：
    确定用于传输同一个逻辑信道的数据的多个Sidelink进程，为所述一组Sidelink进程；
    确定用于传输同一个业务类型的数据的多个Sidelink进程，为所述一组Sidelink进程；
    确定用于传输同一组逻辑信道的数据的多个Sidelink进程，为所述一组Sidelink进程，其中，所述一组逻辑信道上的数据包具有相同目的地址，或具有相同的源地址和目的地址对；
    确定具有相同的资源调度周期的多个Sidelink进程，为所述一组Sidelink进程。
  13. 一种选择资源的装置，包括：
    发起模块，设置为在至少一个载波上，发起至少一个边链路Sidelink进程；
    确定模块，设置为确定所述至少一个Sidelink进程为一组Sidelink进程；
    触发模块，设置为依据预设规则触发所述一组Sidelink进程的资源选择。
  14. 一种存储介质，所述存储介质中存储有计算机程序，其中，所述计算机程序被设置为运行时执行所述权利要求1至12任一项中所述的方法。
  15. 一种电子装置，包括存储器和处理器，所述存储器中存储有计算机程序，所述处理器被设置为运行所述计算机程序以执行所述权利要求1至12任一项中所述的方法。
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