WO2017036272A1 - Procédé et dispositif de sélection de ressources - Google Patents

Procédé et dispositif de sélection de ressources Download PDF

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Publication number
WO2017036272A1
WO2017036272A1 PCT/CN2016/093094 CN2016093094W WO2017036272A1 WO 2017036272 A1 WO2017036272 A1 WO 2017036272A1 CN 2016093094 W CN2016093094 W CN 2016093094W WO 2017036272 A1 WO2017036272 A1 WO 2017036272A1
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WO
WIPO (PCT)
Prior art keywords
resource
user equipment
resource pool
priority
vacant
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PCT/CN2016/093094
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English (en)
Chinese (zh)
Inventor
王文焕
杨瑾
黄双红
Original Assignee
中兴通讯股份有限公司
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Publication of WO2017036272A1 publication Critical patent/WO2017036272A1/fr

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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
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
    • H04W72/563—Allocation or scheduling criteria for wireless resources based on priority criteria of the wireless resources

Definitions

  • the present application relates to, but is not limited to, the field of communications, and in particular, to a resource selection method and apparatus.
  • the service data of the user equipment 1 (UE1) to the user equipment 2 (UE2) is first transmitted to the cell where the UE1 is located through the air interface.
  • the base station also referred to as an eNB, or an evolved eNB
  • the service data transmission from UE2 to UE1 adopts a similar processing flow.
  • D2D device-to-device
  • the so-called D2D means that the service data is not forwarded by the base station, and is directly transmitted by the source user equipment to the target user equipment through the air interface, and may also be called a ProSe (Proximity Service).
  • ProSe Proximity Service
  • This communication mode is different from the communication mode of a conventional cellular system.
  • D2D not only saves wireless spectrum resources, but also reduces the data transmission pressure of the core network.
  • Mode 1 communication means that the eNB schedules the transmitting end device (Tx UE) to perform D2D data transmission, that is, each D2D data packet resource transmitted by the Tx UE is indicated by the eNB, D2D After the UE establishes a Radio Resource Control (RRC) connection with the eNB, Mode 1 communication can be performed under the unified scheduling of the eNB.
  • Mode 2 communication means that in a given resource pool, the D2D Tx UE is free to compete for the selected resource for D2D data transmission.
  • Embodiments of the present invention provide a resource selection method and apparatus, which implement resource selection based on priorities.
  • An embodiment of the present invention provides a resource selection method, including: a user equipment (UE) acquires resource pre-configuration information; the UE determines a vacant resource that can be used according to the resource pre-configuration information and the service type; where the resource pre-configuration information includes at least The amount of free resources and priority configuration information.
  • UE user equipment
  • the embodiment of the present invention further provides a resource selection device, which is applied to a user equipment, and includes: an obtaining module, configured to acquire resource pre-configuration information; and a processing module, configured to determine, according to the resource pre-configuration information and the service type, a spare that can be used.
  • the resource pre-configuration information includes at least a vacant resource quantity and priority configuration information.
  • the embodiment of the invention further provides a computer readable storage medium storing computer executable instructions, the resource selection method being implemented when the computer executable instructions are executed.
  • the UE acquires the resource pre-configuration information, and determines the available vacant resources according to the resource pre-configuration information and the service type, where the resource pre-configuration information includes at least the vacant resource amount and the priority configuration information.
  • the embodiment of the present invention performs resource selection by using a priority-based method, dynamically adjusts resource selection according to priority configuration information, and improves resource utilization.
  • the high priority service user preferentially selects the resource pool according to the resource pre-configuration information, and the low priority service user guarantees the high priority user After the configuration, the resource pool is selected to reflect the access capabilities of different priorities.
  • FIG. 1 is a flowchart of a resource selection method according to an embodiment of the present invention
  • FIG. 2 is a flowchart of a resource selection method according to Embodiment 1 of the present invention.
  • FIG. 3 is a schematic diagram 1 of a configuration of a physical shared control channel (PSCCH) resource pool in an embodiment of the present invention
  • FIG. 4 is a schematic diagram 2 of a configuration of a PSCCH resource pool according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram 3 of a configuration of a PSCCH resource pool according to an embodiment of the present invention.
  • FIGS. 6(a) and (b) are schematic diagrams showing resource allocation of a Relay UE and a Remote UE according to an embodiment of the present invention
  • FIG. 7 is a schematic diagram of a relay UE sending control information according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of a resource selection apparatus according to an embodiment of the present invention.
  • FIG. 1 is a flowchart of a resource selection method according to an embodiment of the present invention. As shown in FIG. 1, the resource selection method provided in this embodiment includes the following steps:
  • Step 11 The user equipment (UE) acquires resource pre-configuration information.
  • the resource pre-configuration information includes at least a vacant resource quantity and priority configuration information.
  • the priority configuration information includes: a pre-configured spare resource amount corresponding to different priority services and a vacant resource selection mode of the user equipment according to different priority services.
  • the user equipment selects a pre-configured spare resource quantity corresponding to the service priority of the user equipment from the detected vacant resources according to the priority of the service.
  • the user equipment selects, according to the priority of the service, the amount of the pre-configured spare resources corresponding to the service priority of the user equipment, including: according to the high frequency to the low frequency.
  • the amount of vacant resources detected is selected, or selected from the detected amount of vacant resources from low frequency to high frequency.
  • the service priority of the n user equipment groups is A1, A2, ..., An, and the priority relationship is A1>A2>...>An
  • the pre-configured spare resources corresponding to A1 to An are K1 and K2, respectively.
  • ..., Kn when the amount of vacant resources detected by the user equipment is N, in the vacant resource quantity N, according to the high frequency to the low frequency or the low frequency to the high frequency, sequentially configure the pre-configured spare resources for the user equipment group whose service is A1 level.
  • the quantity K1 and the service are configured for the user equipment group of the A2 level to configure the pre-configured spare resource quantity K2, and so on, until the spare resource quantity N is all allocated.
  • the user equipment of the A1 level selects the vacant resource from the pre-configured vacant resource quantity K1
  • the user equipment of the A2 level selects the vacant resource from the pre-configured spare resource quantity K2, and so on.
  • n is an integer greater than 1
  • N is an integer greater than or equal to 1.
  • the priority configuration information includes: an occupation ratio of the pre-configured spare resource amount corresponding to the different priority services, and a vacant resource selection manner of the user equipment according to different priority services.
  • the user equipment converts the occupation ratio of the pre-configured spare resource amount corresponding to the pre-configured different priority services into the simplest integer ratio with the same denominator;
  • the occupancy ratio of the pre-configured spare resources corresponding to the different priority services determines the pre-configured spare resource amount corresponding to the different priority services, and the user equipment selects the service from the user equipment according to the priority of the service type from high to low.
  • the first value is a rounded value of a ratio of the detected amount of the vacant resource to the sum of the simplest integers of the pre-configured vacant resources
  • the second value The remainder of the ratio of the sum of the detected vacant resources to the sum of the simplest integers of the pre-configured vacant resources.
  • the user equipment is sequentially updated from the detected priority according to the priority of the service.
  • the amount of the pre-configured spare resource corresponding to the service priority of the user equipment is selected in the source quantity, including: selecting the amount of the vacant resource detected from the high frequency to the low frequency, or detecting from the low frequency to the high frequency
  • the amount of spare resources is selected.
  • the service priority of the n user equipment groups is A1, A2, ..., An, and the priority relationship is A1>A2>...>An
  • the ratio of the pre-configured spare resources corresponding to A1 to An is K1:K2. :...:Kn, where K1, K2, ..., Kn are integers greater than 0, and there is no common divisor between the values.
  • the detected amount of vacant resources is N
  • the first value P INT(N /(K1+K2+...+Kn))
  • the second value M MOD(N/(K1+K2+...+Kn))
  • INT represents a rounding operation
  • MOD represents a modulo operation.
  • the pre-configured spare resource corresponding to the user equipment of the A1 level is, for example, P*K1+M
  • the pre-configured spare resource corresponding to the user equipment of the A2 level is, for example, P*. K2, and so on.
  • K1 ⁇ M ⁇ K1 + K2 the pre-configured spare resource corresponding to the user equipment of the A1 level is, for example, P*K1+K1
  • the pre-configured spare resource corresponding to the user equipment of the A2 level is, for example, P*.
  • M is preferentially assigned to the user equipment of the A1 level, and then the user equipment of the A2 level until M-(K1+K2+...+Ki) ⁇ 0.
  • n is an integer greater than 1
  • N is an integer greater than or equal to 1
  • i is an integer greater than or equal to 1.
  • the pre-configured spare resource quantity P*K1+M is configured for the user equipment whose service is the A1 level, and the service is The A2 level user equipment is configured with the pre-configured spare resource amount P*K2, and so on.
  • the user equipment of the A1 level selects the spare resource from the pre-configured spare resource quantity P*K1+M
  • the service equipment of the A2 level selects the spare resource from the pre-configured spare resource quantity P*K2, and so on.
  • the pre-configured spare resource corresponding to the user equipment of the A1 level is, for example, P*K1+K1
  • the pre-configured spare resource corresponding to the user equipment of the A2 level is, for example, P*. K2+M-K1
  • M is preferentially assigned to the user equipment of the A1 level, then the user equipment of the A2 level, until M-(K1+K2+...+Ki) ⁇ 0, each level of user equipment The resource is selected in the corresponding pre-configured spare resource according to the service priority.
  • the priority configuration information includes: a resource pool corresponding to different priority services, a preset ratio of the amount of idle resources in each resource pool and a total resource amount of the corresponding resource pool, and a priority of the user equipment according to different priorities. The choice of spare resources for the level of business.
  • the user equipment selects the vacant resource from the resource pool;
  • the user equipment When the ratio of the amount of the idle resource in the resource pool corresponding to the service priority of the user equipment to the total resource amount of the resource pool is less than the preset ratio of the resource pool, the user equipment has a lower priority from the resource pool and the service priority.
  • the resource pool of the resource pool is selected from the resource pool, and the ratio of the resource pool and the resource resource in the resource pool of the resource pool to the total resource amount of the resource pool is greater than or equal to the preset ratio. .
  • the user equipment selects the vacant resource in the following manner, and the service priority is lower than the resource pool in the resource pool: from all the resource pools whose service priority is lower than the resource pool, the service priority is from high to low.
  • the resource pools are sequentially selected in sequence, or sequentially selected according to the resource pools whose service priorities are from low to high.
  • the resources are divided into n resource pools R1, R2, ..., Rn that do not overlap each other, and respectively correspond to n service priorities A1, A2, ..., An, where n service priority relationships are A1>A2> ...>An, the preset ratio of the idle resource amount of the resource pool Ri to the total resource amount of the resource pool Ri is Pi.
  • n is an integer greater than 1, and i is less than or equal to n.
  • the service is the user equipment slave resource of the Ai level. Select a spare resource in the pool Ri;
  • the service is the user equipment of the Ai level from the resource pool Ri. And selecting a spare resource in the resource pool whose service priority is lower than the resource pool Ri (for example, the resource pool Ri+1, Ri+2, or the resource pool Rn, Rn-1), wherein the resource pool Ri and the priority are lower than
  • the ratio of the amount of vacant resources in the resource pool of the resource pool Ri (for example, the resource pool Ri+1, Ri+2, or the resource pool Rn, Rn-1) to the total resource amount of the resource pool Ri is greater than or equal to a preset ratio. Pi.
  • the priority configuration information includes: a resource pool corresponding to different priority services, a preset collision probability of each resource pool, and a vacant resource of the user equipment according to different priority services. options.
  • the user equipment When the user equipment detects that the collision probability of the resource pool corresponding to the priority of the service is less than or equal to the preset collision probability of the resource pool, the user equipment selects the vacant resource from the resource pool corresponding to the priority of the service, where The collision probability of the resource pool is equal to the reciprocal of the amount of vacant resources of the resource pool detected by the user equipment;
  • the user equipment When the user equipment detects that the collision probability of the resource pool corresponding to the service priority is greater than the preset collision probability of the resource pool, the user equipment has a resource pool corresponding to its own service priority and the service priority is lower than the resource pool.
  • the vacant resource is selected in the resource pool, wherein the resource pool detected by the user equipment and the reciprocal of the vacant resource in the resource pool whose service priority is lower than the resource pool are less than or equal to the preset collision probability.
  • the user equipment selects the vacant resource in the following manner, and the service priority is lower than the resource pool in the resource pool: from all the resource pools whose service priority is lower than the resource pool, the service priority is from high to low.
  • the resource pools are sequentially selected in sequence, or sequentially selected according to the resource pools whose service priorities are from low to high.
  • the resources are divided into n resource pools R1, R2, ..., Rn that do not overlap each other, and respectively correspond to n service priorities A1, A2, ..., An, where n service priority relationships are A1>A2> ...>An, the preset collision probability of the resource pool Ri is Pi.
  • n is an integer greater than 1, and i is less than or equal to n.
  • the collision probability Qi of the resource pool Ri is greater than the preset collision probability Pi of the resource pool Ri
  • the user equipment service is Ai level
  • the resource pool Ri and the resource pool whose service priority is lower than the resource pool Ri for example, resources
  • the pools Ri+1, Ri+2, or the resource pools Rn, Rn-1) select the vacant resources, wherein the resource pool Ri and the resource pool whose service priority is lower than the resource pool Ri (for example, the resource pool Ri+1, Ri+2, or the reciprocal of the amount of spare resources in the resource pools Rn, Rn-1) is less than or equal to the preset collision probability Pi.
  • Step 12 The UE determines the available spare resources according to the resource pre-configuration information and the service type.
  • the UE determines the available spare resources according to the service type, the detected amount of spare resources, and the priority configuration information.
  • This embodiment is divided into two processes of listening and occupying for a D2D UE that needs to communicate.
  • the interception process learns the resource occupation status by power detection or decoding the corresponding resource unit, and considers that the resource occupied by the next period continues to be used by the user equipment until a certain period of detection is empty.
  • the power detection is resource detection, and the corresponding time-frequency resource power exceeds a certain threshold (such as M), or the resource is correctly decoded, and the control channel obtains its control channel content, that is, the resource occupancy of the user equipment communication or according to the control channel.
  • Decoding further decoding the broadcast or unicast traffic associated with the user equipment at the indicated traffic channel.
  • each user equipment For each user equipment, whether it is a user equipment with a high service priority or a user equipment with a low service priority, it will first listen to the vacant resources of a period before preparing the resource for preemption. In the next cycle, according to the user equipment service priority configuration, the vacant resources that are intercepted, and the service requirements of the D2D UE in the next cycle, the resources are preempted on which resources.
  • the priority configuration information includes priority configuration performed by users for different service priorities.
  • FIG. 2 is a flowchart of a resource selection method according to Embodiment 1 of the present invention. As shown in FIG. 2, the resource selection method provided in this embodiment includes:
  • Step 101 The UE detects a vacant resource of the resource pool.
  • Step 102 Determine an area of random resource selection according to resource pre-configuration information.
  • the scenario in this embodiment is a D2D outdoor coverage, and the Remote UE1 and the Remote UE2 communicate through the Relay UE.
  • the present embodiment will be described in detail below.
  • the resource pool of the user equipment of the service priority class A1 is R1
  • the resource pool of the user equipment of the service priority class A2 is R2, that is, the resource pool is divided by the frequency division mode, where the A1 level service is The priority is higher than the A2 level service.
  • the priority of the data packet selected as the Relay UE is greater than the D2D UE that needs to communicate
  • the Relay UE is the user equipment of the A1 level service
  • the other D2D UEs are the A2 level service.
  • the resource pool R1 is used by the D2D Relay UE, and the resource pool R2 is used by the D2D UE. Since the service priority of the D2D UE is lower than that of the Relay UE, the resource pool R2 can be dynamically adjusted to preferentially satisfy the Relay UE.
  • the user equipment of the A1 level service listens to the vacant resources in the first period, the vacant resource quantity K1 in the resource pool R1 is 5, and the vacant resource quantity K2 in the resource pool R2 is 5.
  • the total resource amount of the resource pool R1 is 8.
  • the user equipment of the service performs resource selection on the vacant resources of the resource pool R1, such as physical resource block (PRB), number 1, 2, 3, 4, and 7;
  • PRB physical resource block
  • the user equipment of the A2 service listens to the vacant resources in the first period.
  • the vacant resource quantity K1 in the resource pool R1 is 5, and the vacant resource quantity K2 in the resource pool R2 is 5.
  • the resource pool R2 The total resource amount of the A2 level service is 8 at this time.
  • Resource selection is performed on the vacant resources of the resource pool R2, such as PRB numbers 9, 11, 12, 13, and 15.
  • the user equipment of the A1 level service listens to the vacant resource in the first period, the vacant resource quantity K1 in the resource pool R1 is 4, and the vacant resource quantity K2 in the resource pool R2 is 5.
  • the total resource amount of the resource pool R1 is 8.
  • the resource pool corresponding to the user equipment of the A1 service is adjusted as shown in FIG. 4, and the user equipment of the A1 service performs resource selection on the spare resource in the resource pool R1+Ri area; at this time, the resource pool R1+Ri is free.
  • the amount of resources is 6.
  • the user equipment of the A2 service listens to the vacant resources in the first period.
  • the vacant resource quantity K1 in the resource pool R1 is 4, and the vacant resource quantity K2 in the resource pool R2 is 5.
  • the resource pool R2 The total amount of resources is 8, at this time, the total amount of spare resources K2 of the resource pool R2 / the total of the resource pool R2
  • the resource pool corresponding to the user equipment of the level service is R2-Ri.
  • the user equipment of the A2 level service performs resource selection on the spare resources of the adjusted resource pool area.
  • the optional vacant resources of the device are used to preferentially ensure the vacant resource selection of the user equipment of the A1 level service with high priority.
  • the user equipment of the A1 level service listens to the vacant resources in the first period, the vacant resource quantity K1 in the resource pool R1 is 3, and the vacant resource quantity K2 in the resource pool R2 is 4.
  • the total resource amount of the resource pool R1 is 8.
  • the resource pool corresponding to the user equipment of the A1 service is adjusted as shown in FIG.
  • the user equipment of the A1 service performs resource selection on the spare resource in the resource pool R1+R2 area;
  • the user equipment performs resource selection on the vacant resources of the resource pool R1+R2, such as PRB numbers 2, 4, 7, 9, 12, 13, and 15;
  • the user equipment of the A2 service listens to the vacant resources in the first period, the vacant resource quantity K1 in the resource pool R1 is 3, and the vacant resource quantity K2 in the resource pool R2 is 4, in order to satisfy A1.
  • the user equipment of the A2 service is required to serve the user equipment of the A1 service, that is, the user equipment of the A2 service is in the next user access (SA, Subscriber Access) resource occupation period.
  • SA Subscriber Access
  • the amount of the spare resource of the resource pool R1 corresponding to the user equipment of the A1 level service of a certain SA resource period meets the preset requirement, as shown in the figure.
  • the resource pool R1 shown in FIG. 3 or the adjusted resource pool R1 in FIG. 4 performs resource preemption. For example, the resource of the resource pool R2 shown in FIG. 3 and the resource of the adjusted resource pool R2 shown in FIG. Resource selection of user equipment for A2 level service.
  • the Relay UE due to the coverage of the Relay
  • the UE is used for the information exchange of the two Remote UEs, and the resources reserved by the Relay UE are used for the Remote UE in the next cycle, that is, the Relay UE and the Remote UE are time-division multiplexed, as shown in FIG. 6(a) and FIG. 6(b).
  • the process is as follows:
  • the working period of the Relay UE and the Remote UE is notified by the signaling or the pre-configuration.
  • the Relay UE is used by the Relay UE after the SA1 preemption to indicate that it is performing on the resource R1 to the Remote UE1 user.
  • the Relay UE is used by the Relay UE to indicate that it sends the related information to the Remote UE2 user on the resource R2.
  • the SA1 is used to indicate that the Remote UE1 user is in the resource R1 to the Relay UE.
  • the communication is performed, and SA2 is used to instruct the Remote UE2 to communicate with the Relay UE on the resource R2.
  • the Remote UE when the Relay UE establishes a link with the Remote UE, notifying the start period of the Relay UE, the Remote UE will send in the next period, or the pre-configured parity period is used for the Relay UE and the Remote UE;
  • the data is sent to the Remote UE or the Relay UE.
  • the Relay UE is used for the Relay UE to indicate that the Remote UE1 user sends the related information on the resource R1 after the SA1 preemption.
  • the Relay UE is used to indicate that the Remote UE2 user sends the related information on the resource R2.
  • the SA1 is used to indicate that the Relay UE performs communication to the Remote UE1 on the resource R1.
  • the relay UE is instructed to perform communication to the Remote UE 2 on the resource R2.
  • control information of the Relay UE and the Remote UE1 and the Remote UE2 is sent by the Relay UE, where the content of the control information is as shown in Table 1, which is used to indicate that the Relay UE sends the resource or sends the Remote UE.
  • One bit indication of the resource is used to indicate that the Relay UE sends the resource or sends the Remote UE.
  • the scene in this embodiment is an outdoor coverage scenario.
  • the service priority of the Relay UE is greater than that of the D2D UE that needs to communicate, the Relay UE is sent as the A1 level data packet, and the other D2D is used as the A2 level data packet, where the A1 level service is used.
  • the priority is higher than that of the A2 service
  • the resource pool of the user equipment with the priority of the A1 is R1
  • the resource pool of the user equipment with the priority of the A2 is R2
  • the default collision probability of the resource pool R1 is 0.2.
  • the user equipment of the A2 level service performs resource selection on the spare resource of the resource pool R2 area, such as the PRB serial number 9, 11, 12, 13, 15
  • the user equipment of the A1 level service listens to the vacant resource in the first period, the vacant resource quantity K1 in the resource pool R1 is 4, and the vacant resource quantity K2 in the resource pool R2 is 5.
  • the resource pool corresponding to the user equipment of the A1 level service is adjusted, for example, in the resource pool R2.
  • the user equipment of the A2 level service listens to the vacant resources in the first period.
  • the area of the resource pool R2 is reduced, for example, only the first frequency resource from the bottom up is occupied, and the spare resources are the PRB serial numbers 12, 13, and 15.
  • the user equipment of the A1 level service listens to the vacant resources in the first period, the vacant resource quantity K1 in the resource pool R1 is 3, and the vacant resource quantity K2 in the resource pool R2 is 4.
  • the Ri area is used as the resource pool extension area, and the vacant resource PRB number 9 is selected from left to right as the selection area of the user equipment of the A1 level service, that is, the vacant resources selected by the user equipment of the A1 level service are PRB numbers 2, 4, 7, and 9.
  • the resource pool is not divided, and only the pre-configured spare resources that can be used by each priority service (group or data packet) and the pre-configured spare resources that can be used by the user equipment with high priority service requirements are configured.
  • the service priority of the Relay UE is greater than the D2D UE that needs to communicate.
  • the data packet of the Relay UE is used as the A1 level, and the data packets of other D2D UEs are used as the A2 level, and the priority of the A1 level is higher than the priority of the A2 level.
  • the pre-configured vacant resource of the D2D Relay UE is 6, and the pre-configured vacant resource of the D2D UE is 3, and the D2D Relay UE and the D2D UE use a unified resource pool.
  • the D2D Relay UE retrieves the available vacant resources from top to bottom; for the configured resource pool, the D2D UE searches for the vacant resources that can be accessed from the bottom up.
  • the D2D Relay UE retrieves the PRB sequence numbers 1, 2, 3, 4, 7, and 9 from the top to the bottom as vacant resources, that is, the six vacant resources are D2D Relay UE accessible resources. .
  • the D2D UE searches for the PRB sequence numbers 15, 13, and 12 from the bottom up to the vacant resources, that is, the three vacant resources are the accessible resources of the next cycle of the D2D UE.
  • the D2D Relay UE retrieves the PRB numbers 2, 4, 7, 9, 12, and 13 as vacant resources from the top to the bottom, that is, the six vacant resources are the accessible resources of the Relay UE, and only the vacant resources.
  • the PRB sequence number 15 is an accessible resource of the D2D UE.
  • the data resource allocation is similar.
  • the resources of each user equipment are the frequency domain PRB, the time domain subframe is the smallest unit, and the power detection is configured by the D2D resource pool.
  • Resources analyze the pool of spare resources that can be used. According to the power detection result, the available vacant resources are retrieved from the low frequency to the high frequency, and the predefined vacant resources are configured as the user equipment with high priority, and the remaining vacant resources are freely selected by the user equipment with low service priority.
  • the resource pool is not divided, and only the ratio of the pre-configured spare resources that can be used by each priority is configured, and the user equipment with a high service priority uses a pre-configured spare resource that is larger than the user with a lower service priority.
  • the amount of preconfigured free resources used by the device is not divided, and only the ratio of the pre-configured spare resources that can be used by each priority is configured, and the user equipment with a high service priority uses a pre-configured spare resource that is larger than the user with a lower service priority.
  • the service priority of the Relay UE is greater than that of the D2D UE that needs to communicate.
  • the service of the Relay UE is the A1 level
  • the other D2D UE services are the A2 level
  • the priority of the A1 level is higher than the A2 level.
  • the ratio of the configured spare resource amount to the pre-configured spare resource amount of the D2D UE is 2, and the D2D Relay UE and the D2D UE use the unified resource pool.
  • the D2D Relay UE retrieves the available vacant resources from top to bottom; for the configured resource pool, the D2D UE searches for the vacant resources that can be accessed from the bottom up.
  • the total amount of vacant resources retrieved is 10, and the D2D Relay UE retrieves the PRB numbers 1, 2, 3, 4, 7, 9, and 11 from the top down to the vacant resources, that is, 7
  • the PRB sequence numbers 12, 13, and 15 serve as access resources for the next cycle of the D2D UE.
  • the D2D Relay UE retrieves the PRB numbers 2, 4, 7, 9, 12, 13, and 15 from the top to the bottom as vacant resources, that is, 7 vacant resources, according to the pre-configuration requirements, PRB.
  • No. 2, 4, 7, 9, and 12 are the access resources of the D2D Relay UE in the next cycle.
  • the PRB serial numbers 13 and 15 are used as the access resources of the D2D UE.
  • the pre-configured spare resources of the D2D Relay UE are satisfied.
  • the pre-configured vacancy resource of the D2D UE the pre-configuration requirement of 2.5>2.
  • all resources are used. D2D Relay UE.
  • the data resource allocation is similar.
  • the resources of each user equipment are the frequency domain PRB
  • the time domain subframe is the smallest unit
  • the power resource detection is configured for each subframe frequency resource of the D2D resource pool.
  • a pool of spare resources that can be used. According to the power detection result, the available spare resources are retrieved from the low frequency to the high frequency, and are allocated to the user equipment with high service priority and the user equipment with low service priority according to a predefined ratio.
  • the resource pool is divided into multiple independent areas R1, R2, R3, R4, R5, and R6 according to the pre-configuration.
  • the resource pool can be divided into two-dimensional time-frequency, and the time-domain resource pool parameters are resource-based through startPRB1 and startPRB2.
  • the pool frequency domain indicates the configuration, and the time domain is indicated by the time-resource pattern for transmitter (T-RPT), and the vacant resources that can be accessed by each service priority are pre-configured, and the priority is A1>A2. >A3>A4>A5>A6, when the user equipment service is A1 level, and the detected R1 vacant resources do not meet the predefined requirements, the resources of the combined R1 and R6 are used by the user equipment of the service priority level A1.
  • the merging R2 and R5 are used by the user equipment of the service priority A2 level, and the resources of the R3 and R4 are the users of the service priority A3 level when the resources of the R3 do not meet the requirements of the vacant resources. Equipment.
  • the resource pool is divided into multiple independent resource pools of R1, R2, R3, R4, R5, and R6, and the spare resources that can be accessed by each priority are pre-configured, corresponding to the priority A1>A2>A3> A4>A5>A6, when the service is the user equipment of the A1 level, the R1 free resource is not detected.
  • the resources of R1+R2 are selected to meet the A1 priority requirements.
  • the vacant resources of the user equipment of the A2 level do not meet the requirements, the vacant resources are selected in the next level of resources. And so on, until the available spare resources are all selected by the high-level user equipment.
  • the resource pools are not divided, and only the priority resources A1>A2>A3>A4>A5>A6 can be configured to meet the required pre-configured vacancy resources: P1, P2, P3, P4, P5, and P6.
  • the user equipment searches for the vacant resources from the low frequency to the high frequency of the resource pool to satisfy the pre-configured spare resource amount P1 corresponding to the A1 priority service, and the user equipment whose service is the A1 level uses the spare resources of the P1 in the next cycle, so that the user equipment does not need to continue to detect low.
  • the vacant resource of the service priority, the user equipment of the A2 level continues to detect the remaining vacant resources to satisfy the pre-configured vacant resource P2 of the A2 priority service, and the user equipment of the A2 level uses the vacant resource of the P2 in the next cycle.
  • the user equipment of the level service is accessed in the next cycle.
  • the present embodiment solves the problem of interference between the communication between the devices and the communication in the original network by scheduling physical resources for communication between the devices, realizing direct communication between the user devices, and improving spectrum efficiency.
  • the embodiment of the present invention further provides a resource selection apparatus, which is applied to a UE, and includes: an obtaining module, configured to acquire resource pre-configuration information; and a processing module, configured to perform resource pre-configuration information and a service type. Determining the available spare resources; wherein the resource pre-configuration information includes at least the amount of the spare resources and the priority configuration information.
  • the acquisition module is, for example, a communication element having a function of receiving and detecting information such as a receiver
  • the processing module is, for example, a communication element having information processing processing capability such as a processor.
  • the priority configuration information includes: a pre-configured spare resource amount corresponding to different priority services and a vacant resource selection mode of the user equipment according to different priority services.
  • the user equipment selects a pre-configured spare resource quantity corresponding to the service priority of the user equipment from the detected vacant resources according to the priority of the service.
  • the user equipment selects, according to the priority of the service, the amount of the pre-configured spare resources corresponding to the service priority of the user equipment, including: according to the high frequency to the low frequency.
  • the amount of vacant resources detected is selected, or selected from the detected amount of vacant resources from low frequency to high frequency.
  • the priority configuration information includes: an occupation ratio of the pre-configured spare resource amount corresponding to the different priority services, and a vacant resource selection manner of the user equipment according to the different priority services.
  • the user equipment converts the occupation ratio of the pre-configured spare resource amount corresponding to the different priority services into the simplest integer ratio with the same denominator;
  • the pre-configured spare resources corresponding to the services of different priorities The occupancy ratio, the first value, and the second value determine the amount of the pre-configured spare resources corresponding to the different priority services, and the user equipment selects from the detected vacant resources according to the priority of the service type.
  • the first value is a rounded value of a ratio of the detected vacant resource quantity to the sum of the simplest integer ratio molecules of the pre-configured vacant resource quantity
  • the second value is the remainder of the ratio of the detected amount of vacant resources to the sum of the simplest integers of the pre-configured vacant resources.
  • the user equipment selects, according to the priority of the service, the amount of the pre-configured spare resources corresponding to the service priority of the user equipment, including: according to the high frequency to the low frequency.
  • the amount of vacant resources detected is selected, or selected from the detected amount of vacant resources from low frequency to high frequency.
  • the priority configuration information includes: a resource pool corresponding to different priority services, a preset ratio of the amount of idle resources in each resource pool and a total resource amount of the corresponding resource pool, and different user equipments. The method of selecting the spare resources for the priority service.
  • the user equipment selects the vacant resource from the resource pool;
  • the user equipment When the ratio of the amount of the idle resource in the resource pool corresponding to the priority of the user equipment to the total resource of the resource pool is less than the preset ratio of the resource pool, the user equipment has a lower priority from the resource pool and the service priority.
  • the resource pool of the resource pool is selected from the resource pool, and the ratio of the resource pool and the amount of the vacant resource in the resource pool of the resource pool to the total resource amount of the resource pool is greater than or equal to the preset ratio.
  • the user equipment selects the vacant resource in the following manner, and the service priority is lower than the resource pool in the resource pool: from all the resource pools whose service priority is lower than the resource pool, the service priority is from high to low.
  • the resource pools are sequentially selected in sequence, or sequentially selected according to the resource pools whose service priorities are from low to high.
  • the priority configuration information includes: a resource pool corresponding to different priority services, a preset collision probability of each resource pool, and a vacant resource selection manner of the user equipment according to different priority services.
  • the user equipment When the user equipment detects that the collision probability of the resource pool corresponding to the priority of the service is less than or equal to the preset collision probability of the resource pool, the user equipment selects the spare resource from the resource pool corresponding to the priority of the service;
  • the collision probability of the resource pool is equal to the reciprocal of the vacant resource amount of the resource pool detected by the user equipment;
  • the user equipment When a user equipment detects that the collision probability of the resource pool corresponding to the priority of the service is greater than the preset collision probability of the resource pool, the user equipment has a lower priority than the resource pool and the service priority corresponding to the priority of the service.
  • the vacant resource is selected in the resource pool of the pool, wherein the resource pool detected by the user equipment and the reciprocal of the vacant resource in the resource pool whose service priority is lower than the resource pool are less than or equal to the preset collision probability.
  • the user equipment selects the vacant resource in the following manner, and the service priority is lower than the resource pool in the resource pool: from all the resource pools whose service priority is lower than the resource pool, the service priority is from high to low.
  • the resource pools are sequentially selected in sequence, or sequentially selected according to the resource pools whose service priorities are from low to high.
  • the embodiment of the invention further provides a computer readable storage medium storing computer executable instructions, the resource selection method being implemented when the computer executable instructions are executed.
  • all or part of the steps of the above embodiments may also be implemented by using an integrated circuit. These steps may be separately fabricated into individual integrated circuit modules, or multiple modules or steps may be fabricated into a single integrated circuit module. achieve. Thus, embodiments of the invention are not limited to any specific combination of hardware and software.
  • the devices/function modules/functional units in the above embodiments 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.
  • the device/function module/functional unit in the above embodiment When the device/function module/functional unit in the above embodiment is implemented in the form of a software function module and sold or used as a stand-alone product, it can be stored in a computer readable storage medium.
  • the above mentioned computer readable storage medium may be a read only memory, a magnetic disk or an optical disk or the like.
  • the embodiment of the present application provides a resource selection method and device, which performs resource selection by using a priority-based method, dynamically adjusts resource selection according to priority configuration information, and improves resource utilization.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Telephonic Communication Services (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un procédé de sélection de ressources qui comprend les étapes suivantes : un équipement utilisateur (UE) acquiert des informations de pré-configuration de ressources, et, en fonction des informations de pré-configuration de ressources et d'un type de service, détermine une ressource inoccupée utilisable, les informations de pré-configuration de ressources comprenant au moins une quantité de ressources inoccupées et des informations de configuration de niveau de priorité. Le procédé de sélection de ressources décrit ci-dessus effectue une sélection de ressources sur la base du niveau de priorité.
PCT/CN2016/093094 2015-09-01 2016-08-03 Procédé et dispositif de sélection de ressources WO2017036272A1 (fr)

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