WO2020078456A1 - 业务的发送方法、装置及终端 - Google Patents

业务的发送方法、装置及终端 Download PDF

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Publication number
WO2020078456A1
WO2020078456A1 PCT/CN2019/111901 CN2019111901W WO2020078456A1 WO 2020078456 A1 WO2020078456 A1 WO 2020078456A1 CN 2019111901 W CN2019111901 W CN 2019111901W WO 2020078456 A1 WO2020078456 A1 WO 2020078456A1
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WIPO (PCT)
Prior art keywords
transmission power
resource
transmission
unicast
service
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PCT/CN2019/111901
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English (en)
French (fr)
Inventor
冯媛
赵锐
郑方政
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电信科学技术研究院有限公司
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Publication of WO2020078456A1 publication Critical patent/WO2020078456A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0473—Wireless resource allocation based on the type of the allocated resource the resource being transmission power
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria

Definitions

  • the present disclosure relates to the field of communication technology, and in particular, to a service transmission method, device, and terminal.
  • V2X vehicle to everything information exchange
  • vehicle-to-vehicle vehicle-to-road infrastructure
  • wireless communication between vehicles and passers-by real-time perception of vehicle surroundings
  • sharing of road information and timely warning. It has become a research hotspot in the world to solve road safety problems.
  • a PC5 interface also called a straight-through link, which is described in the protocol, transmits data between the UE (User Equipment, user equipment or terminal) and the UE Sidelink
  • the UE User Equipment, user equipment or terminal
  • the UE Sidelink can already support the transmission of basic road safety-based services.
  • it is mainly oriented to the service package with the data packet size between 50-1200 bytes, and the transmission reliability of the required service package within the prescribed coverage is greater than 95%.
  • the communication requirements change.
  • the communication distance range depends on the location of the node that establishes the connection; for multicast, it depends on the length of the fleet. This minimum requirement is not directly related to the vehicle speed and the degree of system congestion, and the communication distance range is a parameter of quality of service (QoS).
  • QoS quality of service
  • Embodiments of the present disclosure provide a service sending method, device, and terminal. Through power control to meet unicast / multicast communication needs.
  • the embodiments of the present disclosure provide the following technical solutions:
  • a service sending method is applied to a sending terminal supporting V2X service.
  • the method includes:
  • the unicast / multicast service is transmitted according to the transmission power, and the transmission power is less than the maximum transmission power configured by the system.
  • determining the transmission power corresponding to the predetermined transmission resource includes:
  • the transmission power of the PSSCH is indicated by the PSCCH; the sum of the transmission power of the PSCCH and the transmission power of the PSSCH is less than the maximum transmission power configured by the system.
  • determining the transmission power of the physical direct link control channel PSCCH and the physical direct link shared channel PSSCH transmission power corresponding to the predetermined transmission resource includes:
  • the transmission power of the physical through link control channel PSCCH corresponding to the predetermined transmission resource and the transmission power of the physical through link shared channel PSSCH are controlled to obtain the transmission power for transmitting the unicast / multicast service, including:
  • determining the transmission power of the physical through link control channel PSCCH corresponding to the predetermined transmission resource and the transmission power of the physical through link shared channel PSSCH includes:
  • selecting the predetermined transmission resource by means of network device scheduling includes:
  • the resource scheduling request information including: at least one of an expected transmission power, a quality of service QoS parameter including a communication distance range, a communication distance range, and a resource reuse geographic range;
  • sending resource scheduling request information to the network device includes:
  • the resource scheduling request information is sent to the network device through user equipment auxiliary information or through-link user information or medium access control control unit MAC CE.
  • the communication distance range included in the quality of service QoS parameter is determined by the upper layer.
  • the communication distance range is obtained through information related to basic security services.
  • the expected transmission power can be correctly received according to the target terminal under the corresponding link Make a determination;
  • the communication distance range is the furthest distance between the vehicles in the group, and the expected transmission power is determined according to the worst channel quality between the links in the group.
  • the network device configures the predetermined transmission resource according to the scheduling request information, for the same time-frequency resource, it is allocated to terminals with the same communication distance range or the expected transmission power or the difference is less than a preset value.
  • the predetermined transmission resource is: the last unicast / multicast transmission with the terminal
  • the resource with the same transmission power on the resource of the service, or the resource with the difference in transmission power from the resource on which the terminal last sent the unicast / multicast service last time is less than a preset value.
  • the resource with the smallest difference is selected as the predetermined transmission resource.
  • An embodiment of the present disclosure also provides a terminal, including:
  • a processor configured to determine the transmission power corresponding to the predetermined transmission resource when transmitting the unicast / multicast service on the predetermined transmission resource;
  • the transceiver is configured to transmit the unicast / multicast service according to the transmission power on the predetermined transmission resource, and the transmission power is less than the maximum transmission power configured by the system.
  • An embodiment of the present disclosure also provides a service sending device, including:
  • a processing module configured to determine the transmission power corresponding to the predetermined transmission resource when transmitting the unicast / multicast service on the predetermined transmission resource;
  • the transceiver module is configured to transmit the unicast / multicast service according to the transmission power on the predetermined transmission resource, and the transmission power is less than the maximum transmission power configured by the system.
  • An embodiment of the present disclosure also provides a terminal, including: a processor configured to perform the following function: when sending a unicast / multicast service on a predetermined transmission resource, determine the transmission power corresponding to the predetermined transmission resource, and On the predetermined transmission resource, the unicast / multicast service is transmitted according to the transmission power, and the transmission power is less than the maximum transmission power configured by the system.
  • Embodiments of the present disclosure also provide a computer storage medium including instructions, which when executed on a processor, cause the processor to perform the method as described above.
  • the transmission power corresponding to the predetermined transmission resource is determined; on the predetermined transmission resource, the transmission power is transmitted according to the transmission power
  • the transmission power is less than the maximum transmission power configured by the system. This allows unicast multicast to associate services with resources and resources with transmit power, so that power control can be used to meet unicast / multicast communication needs.
  • FIG. 1 is a flowchart of a service sending method according to an embodiment of the present disclosure
  • FIG. 2 is a schematic structural diagram of a terminal according to an embodiment of the present disclosure.
  • an embodiment of the present disclosure provides a service sending method, which is applied to a sending terminal that supports V2X services.
  • the method includes:
  • Step 11 When sending a unicast / multicast service on a predetermined transmission resource, determine the transmission power corresponding to the predetermined transmission resource;
  • Step 12 On the predetermined transmission resource, send the unicast / multicast service according to the transmission power, where the transmission power is less than the maximum transmission power configured by the system.
  • the transmission power corresponding to the predetermined transmission resource is determined; on the predetermined transmission resource, the transmission power is transmitted according to the transmission power
  • the transmission power is less than the maximum transmission power configured by the system. This allows unicast multicast to associate services with resources and resources with transmit power, so that power control can be used to meet unicast / multicast communication needs.
  • determining the transmission power corresponding to the predetermined transmission resource includes:
  • the transmission power of the PSSCH is indicated by the PSCCH; for example, an indication of increasing the transmission power of the PSSCH in SCI (System Control Information), the transmission power of the PSCCH and the transmission power of the PSSCH And less than the maximum transmit power configured by the system.
  • the SCI instruction may further include at least one of a communication distance range, a resource reuse geographic range, and a unicast / multicast service.
  • step 11 determining that the predetermined transmission resource corresponds to the transmission power of the physical through link control channel PSCCH and the transmission power of the physical through link shared channel PSSCH includes:
  • Step 111 From the shared transmission resource pool or the dedicated time division resource pool configured for unicast / multicast service and broadcast service in the system, independently select the predetermined transmission resource or select the predetermined transmission resource by way of network device scheduling;
  • Step 112 Perform control processing on the transmission power of the physical through link control channel PSCCH and the transmission power of the physical through link shared channel PSSCH corresponding to the predetermined transmission resource to obtain the transmission power for transmitting the unicast / multicast service;
  • controlling the transmission power of the PSCCH and the transmission power of the PSSCH corresponding to the predetermined transmission resource may include: the transmission power of the PSCCH and the transmission power of the PSSCH may be reduced to obtain the transmission of the unicast / group
  • the transmission power of the broadcast service, the transmission power of the PSCCH and the transmission power of the PSSCH have an offset that satisfies PSD (power spectral density).
  • PSD power spectral density
  • the PSCCH has a PSD offset of 3 dB compared to the PSSCH, but it is not limited to the PSD offset of 3 dB, as long as the PSD requirements are met.
  • the scheduled transmission resource when the scheduled transmission resource is independently selected from the shared transmission resource pool configured by the system for unicast / multicast service and broadcast service, the scheduled transmission resource is: the last unicast sent with the terminal / The resource with the same transmission power on the resources of the multicast service, or the resource with a difference in transmission power from the resource on which the terminal previously sent the unicast / multicast service last time is less than a preset value. If the difference includes multiple, the resource with the smallest difference is selected as the predetermined transmission resource.
  • selecting the predetermined transmission resource by means of network device scheduling includes:
  • Step 1111 Send resource scheduling request information to the network device, where the resource scheduling request information includes at least one of expected transmission power, quality of service QoS parameters including communication distance range, communication distance range, and resource reuse geographic range ;
  • the resource scheduling request information may be sent to the network device through user equipment auxiliary information (UE assistant information) or through link user information (Sidelink UE Information) or medium access control control unit (MAC) CE signaling.
  • UE assistant information user equipment auxiliary information
  • MAC medium access control control unit
  • Step 1112 Receive scheduling signaling sent by the network device, and according to the scheduling signaling, determine the predetermined sending resource configured by the network device according to the scheduling request information.
  • the communication distance range included in the quality of service QoS parameter is determined by the upper layer.
  • the communication distance range is obtained through information related to basic security services.
  • the expected transmission power can be correctly received according to the target terminal under the corresponding link Make a determination;
  • the communication distance range is the furthest distance between the vehicles in the group, and the expected transmission power is determined according to the worst channel quality between the links in the group.
  • the network device configures the predetermined transmission resource according to the scheduling request information, for the same time-frequency resource, it is allocated to terminals with the same communication distance range or the expected transmission power or the difference is less than a preset value.
  • the transmission power is proportional to the communication distance range and the geographic range of resource reuse, and inversely proportional to the resource reuse coefficient; for example, if the transmission power 1 corresponding to resource 1> the transmission power 2 corresponding to resource 2, then the transmission power 1 corresponds to Communication distance range 1> transmission power 2 corresponds to communication distance range 2, resource 1 resource reuse geographic range 1> resource 2 resource reuse geographic range 2, then resource 1 resource reuse factor 1 ⁇ resource 2 resource multiplexing Use factor 2.
  • the resource here may be a time slot (Slot), and the scheduled transmission resource may be a time-frequency resource in the time slot.
  • the process of selecting the predetermined transmission resource by means of network device scheduling may specifically include:
  • Step 1 The UE notifies the base station of the scheduling request information.
  • the unicast node or multicast cluster head node When requesting resources, such as through UE information or Sidelink UE Information message or MAC CE, the unicast node or multicast cluster head node (ie the UE) needs to inform the gNB / eNB of its expected transmission power, including the communication distance range At least one of the quality of service QoS parameter, the communication distance range, and the geographic range of resource reuse.
  • the communication distance range included in the quality of service QoS parameter is determined by the upper layer.
  • the communication distance range is obtained through information related to basic security services.
  • the expected transmission power is correctly received according to the target terminal under the corresponding link. determine.
  • the communication range here is the longest distance between the vehicles in the group, and the determination of the similar transmission power needs to consider the worst channel quality between the links in the group.
  • a certain amount of margin needs to be considered for processing; further, when there is a channel quality change, the channel request for quality change may also be carried in the scheduling request message, and the eNB and gNB decide whether to adjust resources.
  • Step 2 The base station needs to consider the scheduling request information reported by the terminal when allocating resources.
  • the base station needs to consider the difference in communication range when allocating resources. For the same time slot resource, only the nodes (ie, terminals) with the same or similar communication range / expected transmission power requirements are considered.
  • mapping relationship between time slot resources and multiplexing distances is dynamic and is caused by It is determined by the corresponding service of the node using a certain time-frequency resource. Once a resource is allocated for a user's corresponding service, the multiplexing coefficient (multiplexing distance / transmission power range) corresponding to the time slot in which the resource is located is determined.
  • the base station allocates resources to the node, if space multiplexing or frequency division multiplexing needs to be considered, the related communication distance range requirements or expected transmission requirements of the UE need to be considered, and only the corresponding communication distance requirements or the same transmission power can be considered Or close time-frequency resources are co-frequency or frequency division multiplexed.
  • Step 3 The terminal receives scheduling signaling sent by the network device.
  • the scheduling signaling may be DCI (Downlink Control Information), and the DCI may also indicate the corresponding transmission power. If there is no indication, the UE transmits according to the expected transmission power.
  • DCI Downlink Control Information
  • step 11 it is determined that the predetermined transmission resource corresponds to the transmission power of a physical through link control channel (PSCCH) and the transmission power of a physical through link shared channel (PSSCH) ,include:
  • a time division transmission resource pool configured with a transmission power of the unicast / multicast service
  • step 11 the transmission power of a physical direct link control channel (PSCCH) and the transmission power of a physical direct link shared channel (PSSCH) are determined corresponding to the predetermined transmission resource ,include:
  • the PSCCH does not change the transmission power, but the PSSCH reduces the transmission power, that is, reduces the geographic range of resource reuse and increases the resource reuse rate.
  • the scheduling process is the same as the above-mentioned unicast / multicast and broadcast shared resource pool and is the scheduling process of network equipment;
  • PSCCH and PSSCH are equal proportions after considering PSD, that is, the PSCCH ’s There is an offset between the transmission power and the transmission power of the PSSCH that satisfies the power spectral density PSD.
  • the above embodiment of the present disclosure associates unicast / multicast services with resources, and resources with transmission power.
  • This association may be a static association (for example, in a pre-configured manner, for the above dedicated time-division resource pool Configure the corresponding transmission power), or a dynamic association (for example, the terminal determines the transmission power corresponding to the resource according to its own needs). Therefore, the geographic range of resource reuse corresponding to the resources is consistent, thereby reducing interference and increasing system capacity.
  • the PSCCH mainly serves to inform other nodes of their own resource occupancy, that is, in some scenarios, the control of the transmission power of the PSCCH and the transmission power of the PSSCH may be the same, but in other scenarios , The transmission power control of the two needs to do some differentiated processing. For example, corresponding to different scenarios, there may be multiple implementations:
  • the differential processing of the transmission power of the PSCCH and the transmission power of the PSSCH includes: the transmission power of the PSCCH does not change, that is, the geographic range of the corresponding resource reuse does not change, but the PSSCH reduces the transmission power, thereby reducing the geographic resource reuse Scope and increase resource reuse rate.
  • the PSCCH and PSSCH are separated, and the traffic channel PSSCH reduces the transmission power, but the control channel (PSCCH or dedicated control channel) cannot reduce the transmission power.
  • the PSCCH is based on the original transmission power, so that other nodes can perceive the resource occupancy information.
  • the PSCCH gives a certain indication to the transmission power on the PSSCH; that is, the indication to increase the PSSCH transmission power in the SCI. That is, from the perspective of resource reuse, the capacity is not increased, but the interference on the PSSCH is reduced, and the system capacity is increased to a certain extent.
  • the specific transmission power value depends on whether the PSCCH / PSSCH adopts TDM (Time Division Multiplexing) or FDM (Frequency Division Multiplexing) mode.
  • R14, UE, PSSCH / PSSCH adopts FDM mode PSCCH has 3dB PSD offset compared to PSSCH And then divided equally by PRB (Physical Resource Block).
  • PRB Physical Resource Block
  • the transmission power of unicast / multicast relative to the broadcast service is a relative value.
  • the transmission power value for PSCCH is the same as broadcasting, and for PSSCH, the transmission power value can be reduced according to demand relative to broadcasting services.
  • the receiving node can process correspondingly according to the parsed PSCCH information. For this part of PSSCH resource occupancy, if the resources of the same slot are used, similar processing is required, that is, only nodes with the same or similar communication requirements can occupy this part of PSSCH resource.
  • the time slot resources where resources with a relatively large communication distance range / transmission power gap are occupied are not considered. Exclude the time slot resources where the resources with a relatively large communication distance range / transmission power gap are located. If the remaining resources are not enough for selection, the limited selection is made according to the size of the difference. First, select the resource with the smaller difference for frequency division multiplexing.
  • the second implementation the transmission power of the PSCCH and the transmission power of the PSSCH are the same. Both the PSCCH and PSSCH reduce the geographic range of resource reuse and increase the resource reuse rate.
  • the terminal autonomously selects resources: in the case where a dedicated time division transmission resource pool is pre-allocated, the maximum transmission power of the dedicated time division transmission resource pool can be basically controlled for the transmission power of the PSCCH and the transmission power of the PSSCH, where, Different dedicated time division transmission resource pools are allocated different maximum transmission powers.
  • the base station selects resources: as described in steps 1, 2 and 3 in the above base station scheduling process.
  • the power control of the PSCCH and PSSCH is used as a switch, and it can be used only after satisfying certain conditions, so that the power control can meet the communication distance range requirements of unicast / multicast.
  • an embodiment of the present disclosure also provides a terminal 20, including:
  • the processor 22 is configured to determine the transmission power corresponding to the predetermined transmission resource when sending the unicast / multicast service on the predetermined transmission resource;
  • the transceiver 21 is configured to transmit the unicast / multicast service according to the transmission power on the predetermined transmission resource, and the transmission power is less than the maximum transmission power configured by the system.
  • the processor 22 is specifically configured to: determine the transmission power of the physical through link control channel PSCCH and the physical through link shared channel PSSCH transmission power corresponding to the predetermined transmission resource;
  • the transmission power of the PSSCH is indicated by the PSCCH; the sum of the transmission power of the PSCCH and the transmission power of the PSSCH is less than the maximum transmission power configured by the system.
  • the processor 22 is specifically configured to: independently select the predetermined transmission resource from the shared transmission resource pool or dedicated time division resource pool configured by the system for unicast / multicast service and broadcast service, or select Describe the scheduled delivery resources;
  • the processor 22 controls the transmission power of the physical through link control channel PSCCH and the transmission power of the physical through link shared channel PSSCH corresponding to the predetermined transmission resource to obtain the transmission power for transmitting the unicast / multicast service , Specifically used to: reduce the transmission power of the PSCCH and the transmission power of the PSSCH to obtain the transmission power of transmitting the unicast / multicast service, and between the transmission power of the PSCCH and the transmission power of the PSSCH One meets the power spectral density PSD offset.
  • the processor 22 is specifically configured to: autonomously select the predetermined transmission resource from a dedicated time division transmission resource pool configured for the unicast / multicast service; wherein, one time division transmission resource pool is configured with a unicast / multicast Transmission power of service;
  • the processor 22 is specifically configured to: independently select the predetermined transmission resource from a shared transmission resource pool configured by the system for unicast / multicast services and broadcast services;
  • the processor selects the predetermined transmission resource through a network device scheduling method, which is specifically used for:
  • the resource scheduling request information including: at least one of an expected transmission power, a quality of service QoS parameter including a communication distance range, a communication distance range, and a resource reuse geographic range
  • the transceiver 21 receives scheduling signaling sent by the network device, and determines, according to the scheduling signaling, the predetermined transmission resource configured by the network device according to the scheduling request information.
  • the transceiver 21 When the transceiver 21 sends the resource scheduling request information to the network device, it is specifically used to send the resource scheduling request information to the network device through the user equipment auxiliary information or the direct link user information or the medium access control control unit MAC CE.
  • the communication distance range included in the quality of service QoS parameters is determined by the upper layer.
  • the communication distance range is obtained from information related to basic security services.
  • the expected transmission power is determined according to the target terminal under the corresponding link can receive correctly ;
  • the communication distance range is the furthest distance between the vehicles in the group, and the expected transmission power is determined according to the worst channel quality between the links in the group.
  • the network device configures the predetermined transmission resource according to the scheduling request information, for the same time-frequency resource, it is allocated to terminals that have the same communication distance range or the expected transmission power or the difference is less than a preset value.
  • the predetermined transmission resource is: the last time the unicast / multicast service was transmitted with the terminal A resource with the same transmission power on the resource, or a resource with a difference in transmission power from the resource on which the terminal last sent the unicast / multicast service last time is less than a preset value.
  • the resource with the smallest difference is selected as the predetermined transmission resource.
  • this embodiment is a terminal corresponding to the above method, and all implementations in the above method embodiment are applicable to the embodiment of the terminal, and the same technical effect can also be achieved.
  • a memory 23 may be further included. Both the processor 22 and the memory 23 may be connected to the transceiver 21 through a bus interface. The function of the processor 22 may also be implemented by the transceiver 21. The function can also be realized by the processor 22.
  • An embodiment of the present disclosure also provides a service sending device, including:
  • a processing module configured to determine the transmission power corresponding to the predetermined transmission resource when transmitting the unicast / multicast service on the predetermined transmission resource;
  • the transceiver module is configured to transmit the unicast / multicast service according to the transmission power on the predetermined transmission resource, and the transmission power is less than the maximum transmission power configured by the system.
  • the processing module is specifically configured to: determine the transmission power of the physical direct link control channel PSCCH and the physical direct link shared channel PSSCH transmission power corresponding to the predetermined transmission resource;
  • the transmission power of the PSSCH is indicated by the PSCCH; the sum of the transmission power of the PSCCH and the transmission power of the PSSCH is less than the maximum transmission power configured by the system.
  • the processing module is specifically configured to: independently select the predetermined transmission resource from the shared transmission resource pool or dedicated time-division resource pool configured by the system for unicast / multicast service and broadcast service or select the method by way of network device scheduling Scheduled delivery resources;
  • the processing module controls the transmission power of the physical through link control channel PSCCH and the transmission power of the physical through link shared channel PSSCH corresponding to the predetermined transmission resource to obtain the transmission power for transmitting the unicast / multicast service, Specifically, it is used to reduce the transmission power of the PSCCH and the transmission power of the PSSCH to obtain the transmission power for transmitting the unicast / multicast service. There is one between the transmission power of the PSCCH and the transmission power of the PSSCH Meet the offset of the power spectral density PSD.
  • the processing module is specifically configured to: autonomously select the predetermined transmission resource from a dedicated time division transmission resource pool configured for the unicast / multicast service; wherein, a time division transmission resource pool is configured with a unicast / multicast service 'S transmit power;
  • the processing module is specifically configured to: autonomously select the predetermined transmission resource from a shared transmission resource pool configured by the system for unicast / multicast services and broadcast services;
  • the processing module selects the predetermined transmission resource through a network device scheduling method, which is specifically used for:
  • the transceiver module Controlling the transceiver module to send resource scheduling request information to the network device, the resource scheduling request information including: at least one of expected transmission power, quality of service QoS parameters including a communication distance range, a communication distance range, and a resource reuse geographic range
  • the resource scheduling request information including: at least one of expected transmission power, quality of service QoS parameters including a communication distance range, a communication distance range, and a resource reuse geographic range
  • the transceiver module receives scheduling signaling sent by the network device, and according to the scheduling signaling, determines the predetermined sending resource configured by the network device according to the scheduling request information.
  • the transceiver module When the transceiver module sends resource scheduling request information to a network device, it is specifically used to send resource scheduling request information to the network device through user equipment auxiliary information or through-link user information or medium access control control unit MAC CE.
  • the communication distance range included in the quality of service QoS parameters is determined by the upper layer.
  • the communication distance range is obtained from information related to basic security services.
  • the expected transmission power is determined according to the target terminal under the corresponding link can receive correctly ;
  • the communication distance range is the furthest distance between the vehicles in the group, and the expected transmission power is determined according to the worst channel quality between the links in the group.
  • the network device configures the predetermined transmission resource according to the scheduling request information, for the same time-frequency resource, it is allocated to terminals that have the same communication distance range or the expected transmission power or the difference is less than a preset value.
  • the predetermined transmission resource is: the last time the unicast / multicast service was transmitted with the terminal A resource with the same transmission power on the resource, or a resource with a difference in transmission power from the resource on which the terminal last sent the unicast / multicast service last time is less than a preset value.
  • the resource with the smallest difference is selected as the predetermined transmission resource.
  • An embodiment of the present disclosure also provides a terminal, including: a processor configured to perform the following function: when sending a unicast / multicast service on a predetermined transmission resource, determine the transmission power corresponding to the predetermined transmission resource, and On the predetermined transmission resource, the unicast / multicast service is transmitted according to the transmission power, and the transmission power is less than the maximum transmission power configured by the system. All implementations in the above method embodiments are applicable to the terminal embodiment, and the same technical effect can also be achieved.
  • Embodiments of the present disclosure also provide a computer storage medium, including instructions, which when executed on a computer, cause the computer to execute the method as described above.
  • the transmission power corresponding to the predetermined transmission resource is determined; on the predetermined transmission resource, the order is transmitted according to the transmission power
  • the transmission power is less than the maximum transmission power configured by the system. This allows unicast multicast to associate services with resources and resources with transmit power, so that power control can be used to meet the unicast / multicast communication distance requirements.
  • the disclosed device and method may be implemented in other ways.
  • the device embodiments described above are only schematic.
  • the division of the units is only a division of logical functions.
  • there may be other divisions for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical, or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present disclosure may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the function is implemented in the form of a software functional unit and sold or used as an independent product, it may be stored in a computer-readable storage medium.
  • a computer device which may be a personal computer, a server, or a network device, etc.
  • the foregoing storage media include various media that can store program codes, such as a U disk, a mobile hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.
  • each component or each step can be decomposed and / or recombined.
  • decompositions and / or recombinations should be regarded as equivalent solutions of the present disclosure.
  • steps for performing the above-mentioned series of processing may naturally be executed in chronological order in the order described, but it does not necessarily need to be executed in chronological order, and some steps may be executed in parallel or independently of each other.
  • the object of the present disclosure can also be achieved by running a program or a group of programs on any computing device.
  • the computing device may be a well-known general-purpose device. Therefore, the object of the present disclosure can also be achieved only by providing a program product containing program code for implementing the method or device. That is, such a program product also constitutes the present disclosure, and a storage medium storing such a program product also constitutes the present disclosure.
  • the storage medium may be any known storage medium or any storage medium developed in the future. It should also be noted that, in the device and method of the present disclosure, obviously, each component or each step can be decomposed and / or recombined.

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Abstract

本公开提供了一种业务的发送方法、装置及终端。业务的发送方法包括：在预定发送资源上发送单播/组播业务时，确定预定发送资源对应的发送功率；在预定发送资源上，按照发送功率发送单播/组播业务，发送功率小于系统配置的最大发送功率。

Description

业务的发送方法、装置及终端
相关申请的交叉引用
本申请主张在2018年10月19日在中国提交的中国专利申请号No.201811224703.7的优先权，其全部内容通过引用包含于此。
技术领域
本公开涉及通信技术领域，尤其涉及一种业务的发送方法、装置及终端。
背景技术
V2X(vehicle to everything车对外界的信息交换)技术借助车-车，车与路测基础设施、车与路人之间的无线通信，可实时感知车辆周边状况、共享道路信息并进行及时预警，已成为当前世界各国解决道路安全问题的一个研究热点。
在相关技术中的LTE V2X技术中(Rel-14 LTE V2X技术)，在UE(User Equipment，用户设备或者终端)与UE之间传输数据的PC5接口(也称之为直通链路，协议上描述为Sidelink)已经可以支持基本的基于道路安全的业务的传输。其中，主要面向的是数据包大小为50-1200bytes之间的业务包，要求的业务包在规定的覆盖内其传输的可靠性大于95％。
随着车联网技术的进一步发展，新的一些应用场景出现，例如：车辆编队、高级驾驶、传感器信息共享以及远程控制等应用。这些应用中有些要求的是一个组内的UE之间的通信，或者两个UE之间的单播的通信。因此，V2X系统需要考虑单播以及组播等场景，然而如何实现UE之间的单播或组播通信，业界目前还没有相应的解决方案。
对于单播和组播场景，通信需求发生变化，对于单播来说，通信距离范围需求取决于建立连接的节点的位置；对于组播来说，取决于车队的长度。这个最低需求是与车速以及系统拥塞程度没有直接关系的，通信距离范围是服务质量(QoS)的一个参数。单播/组播的通信范围虽然与广播不同，广播是与拥塞车速等式相关的，与业务无关，但是单播/组播对于不同的应用通信 需求可能存在差异化。
如何满足单播/组播的通信距离范围需求，目前还没有具体的方案。
发明内容
本公开实施例提供了一种业务的发送方法、装置及终端。通过功率控制满足单播/组播的通信需求。
为解决上述技术问题，本公开的实施例提供如下技术方案：
一种业务的发送方法，应用于支持V2X业务的发送终端，所述方法包括：
在预定发送资源上发送单播/组播业务时，确定所述预定发送资源对应的发送功率；
在所述预定发送资源上，按照所述发送功率发送所述单播/组播业务，所述发送功率小于系统配置的最大发送功率。
其中，确定所述预定发送资源对应的发送功率，包括：
确定所述预定发送资源对应物理直通链路控制信道PSCCH的发送功率以及物理直通链路共享信道PSSCH的发送功率；
其中，所述PSSCH的发送功率由所述PSCCH指示；所述PSCCH的发送功率和所述PSSCH的发送功率之和小于系统配置的最大发送功率。
其中，确定所述预定发送资源对应物理直通链路控制信道PSCCH的发送功率以及物理直通链路共享信道PSSCH的发送功率，包括：
从系统配置的单播/组播业务与广播业务的共享发送资源池中，自主选择所述预定发送资源或者通过网络设备调度的方式选择所述预定发送资源；
对所述预定发送资源对应的物理直通链路控制信道PSCCH的发送功率以及物理直通链路共享信道PSSCH的发送功率进行控制处理，得到发送所述单播/组播业务的发送功率。
其中，对所述预定发送资源对应的物理直通链路控制信道PSCCH的发送功率以及物理直通链路共享信道PSSCH的发送功率进行控制，得到发送所述单播/组播业务的发送功率，包括：
降低所述PSCCH的发送功率和所述PSSCH的发送功率，得到发送所述单播/组播业务的发送功率，所述PSCCH的发送功率和所述PSSCH的发送功 率之间具有一满足功率谱密度PSD的偏移量。
其中，确定所述预定发送资源对应的物理直通链路控制信道PSCCH的发送功率以及物理直通链路共享信道PSSCH的发送功率，包括：
从系统配置的单播/组播业务与广播业务的共享发送资源池中，自主选择所述预定发送资源；
保持所述预定发送资源对应的物理直通链路控制信道PSCCH的发送功率不变以及降低物理直通链路共享信道PSSCH的发送功率。
其中，通过网络设备调度的方式，选择所述预定发送资源，包括：
向网络设备发送资源调度请求信息，所述资源调度请求信息包括：预期发送功率、包含通信距离范围在内的服务质量QoS参数、通信距离范围和资源复用地理范围中的至少一项；
接收所述网络设备发送的调度信令，根据所述调度信令，确定所述网络设备根据所述调度请求信息配置的所述预定发送资源。
其中，向网络设备发送资源调度请求信息，包括：
通过用户设备辅助信息或者直通链路用户信息或者介质访问控制控制单元MAC CE，向网络设备发送资源调度请求信息。
其中，对于单播业务，包含服务质量QoS参数中的通信距离范围由高层确定，所述通信距离范围通过基本安全业务相关的信息获取，所述预期发送功率根据对应链路下目标终端可以正确接收进行确定；
对于组播业务，所述通信距离范围是组内车车之间最远距离，所述预期发送功率根据组内链路之间最差的信道质量确定。
其中，所述网络设备根据所述调度请求信息配置的所述预定发送资源时，对于同一个时频资源，分配给通信距离范围或者预期发送功率相同或者相差小于一预设值的终端。
其中，从系统配置的单播/组播业务与广播业务的共享发送资源池中，自主选择所述预定发送资源时，所述预定发送资源为：与所述终端上一次发送单播/组播业务的资源上的发送功率相同的资源，或者，与所述终端上一次发送单播/组播业务的资源上的发送功率的差值小于一预设值的资源。
其中，若所述差值包括多个时，选择差值最小的资源作为所述预定发送 资源。
本公开的实施例还提供一种终端，包括：
处理器，用于在预定发送资源上发送单播/组播业务时，确定所述预定发送资源对应的发送功率；
收发机，用于在所述预定发送资源上，按照所述发送功率发送所述单播/组播业务，所述发送功率小于系统配置的最大发送功率。
本公开的实施例还提供一种业务的发送装置，包括：
处理模块，用于在预定发送资源上发送单播/组播业务时，确定所述预定发送资源对应的发送功率；
收发模块，用于在所述预定发送资源上，按照所述发送功率发送所述单播/组播业务，所述发送功率小于系统配置的最大发送功率。
本公开的实施例还提供一种终端，包括：处理器，被配置为执行如下功能：在预定发送资源上发送单播/组播业务时，确定所述预定发送资源对应的发送功率，在所述预定发送资源上，按照所述发送功率发送所述单播/组播业务，所述发送功率小于系统配置的最大发送功率。
本公开的实施例还提供一种计算机存储介质，包括指令，当所述指令在处理器上运行时，使得处理器执行如上所述的方法。
本公开实施例的有益效果是：
本公开的上述实施例中，通过在预定发送资源上发送单播/组播业务时，确定所述预定发送资源对应的发送功率；在所述预定发送资源上，按照所述发送功率发送所述单播/组播业务，所述发送功率小于系统配置的最大发送功率。使得单播组播将业务跟资源关联起来，资源跟发送功率关联起来，从而可以通过功率控制满足单播/组播的通信需求。
附图说明
图1为本公开的实施例业务的发送方法的流程图；
图2为本公开的实施例终端的架构示意图。
具体实施方式
下面将参照附图更详细地描述本公开的示例性实施例。虽然附图中显示了本公开的示例性实施例，然而应当理解，可以以各种形式实现本公开而不应被这里阐述的实施例所限制。相反，提供这些实施例是为了能够更透彻地理解本公开，并且能够将本公开的范围完整的传达给本领域的技术人员。
如图1所示，本公开的实施例提供一种业务的发送方法，应用于支持V2X业务的发送终端，所述方法包括：
步骤11，在预定发送资源上发送单播/组播业务时，确定所述预定发送资源对应的发送功率；
步骤12，在所述预定发送资源上，按照所述发送功率发送所述单播/组播业务，所述发送功率小于系统配置的最大发送功率。
本公开的上述实施例中，通过在预定发送资源上发送单播/组播业务时，确定所述预定发送资源对应的发送功率；在所述预定发送资源上，按照所述发送功率发送所述单播/组播业务，所述发送功率小于系统配置的最大发送功率。使得单播组播将业务跟资源关联起来，资源跟发送功率关联起来，从而可以通过功率控制满足单播/组播的通信需求。
本公开的一具体实施例中，上述步骤11中，确定所述预定发送资源对应的发送功率，包括：
确定所述预定发送资源对应的PSCCH(Physical Sidelink Control Channel，物理直通链路控制信道)的发送功率以及PSSCH(Physical Sidelink Shared Channel，物理直通链路共享信道)的发送功率；
其中，所述PSSCH的发送功率由所述PSCCH指示；如，在SCI(System Control Information，系统控制消息)中增加PSSCH的发送功率的指示，所述PSCCH的发送功率和所述PSSCH的发送功率之和小于系统配置的最大发送功率。该SCI指示中还可以包括：通信距离范围、资源复用地理范围以及单播/组播业务中的至少一项。
本公开的上述实施例的一种实现方式中：步骤11中，确定所述预定发送资源对应物理直通链路控制信道PSCCH的发送功率以及物理直通链路共享信道PSSCH的发送功率，包括：
步骤111，从系统配置的单播/组播业务与广播业务的共享发送资源池或 者专用时分资源池中，自主选择所述预定发送资源或者通过网络设备调度的方式选择所述预定发送资源；
步骤112，对所述预定发送资源对应的物理直通链路控制信道PSCCH的发送功率以及物理直通链路共享信道PSSCH的发送功率进行控制处理，得到发送所述单播/组播业务的发送功率；
具体的，对所述预定发送资源对应的PSCCH的发送功率以及PSSCH的发送功率进行控制可以包括：可以降低所述PSCCH的发送功率和降低所述PSSCH的发送功率，得到发送所述单播/组播业务的发送功率，所述PSCCH的发送功率和所述PSSCH的发送功率之间具有一满足PSD(power spectral density，功率谱密度)的偏移量。比如，PSCCH相比较于PSSCH有3dB的PSD offset(偏移)，但不限于3dB的PSD offset，只要满足PSD要求即可。
该步骤111中，从系统配置的单播/组播业务与广播业务的共享发送资源池中，自主选择所述预定发送资源时，所述预定发送资源为：与所述终端上一次发送单播/组播业务的资源上的发送功率相同的资源，或者，与所述终端上一次发送单播/组播业务的资源上的发送功率的差值小于一预设值的资源。若所述差值包括多个时，选择差值最小的资源作为所述预定发送资源。
该步骤111中，通过网络设备调度的方式，选择所述预定发送资源，包括：
步骤1111，向网络设备发送资源调度请求信息，所述资源调度请求信息包括：预期发送功率、包含通信距离范围在内的服务质量QoS参数、通信距离范围和资源复用地理范围中的至少一项；
具体可以通过用户设备辅助信息(UE assist information)或者直通链路用户信息(SidelinkUEInformation)或者介质访问控制控制单元(MAC CE)信令，向网络设备发送资源调度请求信息。
步骤1112，接收所述网络设备发送的调度信令，根据所述调度信令，确定所述网络设备根据所述调度请求信息配置的所述预定发送资源。
其中，对于单播业务，包含服务质量QoS参数中的通信距离范围由高层确定，所述通信距离范围通过基本安全业务相关的信息获取，所述预期发送功率根据对应链路下目标终端可以正确接收进行确定；
对于组播业务，所述通信距离范围是组内车车之间最远距离，所述预期发送功率根据组内链路之间最差的信道质量确定。
其中，所述网络设备根据所述调度请求信息配置的所述预定发送资源时，对于同一个时频资源，分配给通信距离范围或者预期发送功率相同或者相差小于一预设值的终端。
该场景中，发送功率与通信距离范围和资源复用地理范围成正比，与资源复用系数成反比；比如资源1对应的发送功率1>资源2对应的发送功率2，则发送功率1对应的通信距离范围1>发送功率2对应的通信距离范围2，资源1的资源复用地理范围1>资源2的资源复用地理范围2，则资源1的资源复用系数1<资源2的资源复用系数2。这里的资源可以为时隙(Slot)，预定发送资源可以是该时隙中的时频资源。
具体来说，通过网络设备调度的方式，选择所述预定发送资源的过程，即网络设备(如可以是基站)调度过程具体可以包括：
步骤1：UE将调度请求信息告知基站。
当请求资源时，比如通过UE assist information或者SidelinkUEInformation消息或者MAC CE，单播节点或者组播簇头节点(即所述UE)需要向gNB/eNB告知自己的预期发送功率、包含通信距离范围在内的服务质量QoS参数、通信距离范围和资源复用地理范围中的至少一项。
对于单播而言，包含服务质量QoS参数中的通信距离范围由高层确定，所述通信距离范围通过基本安全业务相关的信息获取，所述预期发送功率根据对应链路下目标终端可以正确接收进行确定。
对于组播而言，这里的通信范围是组内车车之间最远距离，类似的发送功率的确定需要考虑组内链路之间最差的信道质量。考虑到信道质量的变化，需要考虑一定的裕量处理；进一步，当存在信道质量变更后，也可以在调度请求消息中携带信道质量变更信息，由eNB以及gNB来决策是否需要做资源的调整。
步骤2：基站分配资源时需要考虑终端上报的调度请求信息。
基站分配资源时需要考虑通信范围的差异，对于同一个时隙资源，只考虑分配给通信范围/预期发送功率需求相同或者类似的节点(即终端)。
具体来说，考虑资源空间复用的时候，对于不同的时隙上的时频资源，可以认为可能存在不同的复用距离，这里时隙资源与复用距离的映射关系是动态的，是由使用某时频资源的节点的对应业务来决定的。一旦为某用户对应业务分配了某个资源，该资源所在时隙对应的复用系数(复用距离/发送功率范围)就是确定的。
即基站为节点分配资源的时候，如果需要考虑空间复用或者频分复用的时候，需要考虑UE的相关通信距离范围需求或者预期发送需求，只能考虑相对应的通信距离需求或者发送功率相同或者接近的时频资源做同频或者频分复用。
步骤3：终端接收所述网络设备发送的调度信令，该调度信令可以DCI(Downlink Control Information，下行控制信息)，该DCI中也可以指示相对应的发送功率。如果没有指示，UE就按照预期发送功率进行发送。
本公开的上述实施例的另一种实现方式中：步骤11中，确定所述预定发送资源对应物理直通链路控制信道(PSCCH)的发送功率以及物理直通链路共享信道(PSSCH)的发送功率，包括：
从为所述单播/组播业务配置的专用时分发送资源池中，自主选择所述预定发送资源；其中，一个时分发送资源池配置有一单播/组播业务的发送功率；
按照所述时分发送资源池配置的发送功率，确定所述预定发送资源对应的物理直通链路控制信道(PSCCH)的发送功率以及物理直通链路共享信道PSSCH的发送功率；所述PSCCH的发送功率和所述PSSCH的发送功率之间具有一满足功率谱密度PSD的偏移量。
具体来说，单播/组播采用专用时分发送资源池且是节点自主选择资源场景下：
按照所述时分发送资源池配置的发送功率，确定所述预定发送资源对应的物理直通链路控制信道(PSCCH)的发送功率以及物理直通链路共享信道(PSSCH)的发送功率；具体实现时，节点选择资源的时候，根据自己的通信需求结合专用时分发送资源池的这种配置，确定相对应的发送资源池。
本公开的上述实施例的又一种实现方式中：步骤11中，确定所述预定发送资源对应物理直通链路控制信道(PSCCH)的发送功率以及物理直通链路 共享信道(PSSCH)的发送功率，包括：
从系统配置的单播/组播业务与广播业务的共享发送资源池中，自主选择所述预定发送资源；
保持所述预定发送资源对应的物理直通链路控制信道(PSCCH)的发送功率不变以及降低物理直通链路共享信道(PSSCH)的发送功率。
该实施例中，PSCCH不变发送功率，但是PSSCH降低发送功率，即减少资源复用地理范围，增加了资源复用率。
需要说明的是，本公开的又一实施例中，从为所述单播/组播业务配置的专用时分发送资源池中，通过网络设备调度的方式选择所述预定发送资源的场景下，具体的调度过程和上述单播/组播和广播共享资源池且是网络设备调度过程相同；
需要补充说明的是，对于单播/组播采用专用频分发送资源池且是节点自主选择资源以及单播/组播采用专用频分发送资源池且网络设备调度场景下；需要考虑IBE的影响，且因为独立的资源池是独立的控制，因此在这种方式下对于单播和组播业务，还是需要以最大的发送功率来发送，PSCCH与PSSCH考虑PSD后等比例，即所述PSCCH的发送功率和所述PSSCH的发送功率之间具有一满足功率谱密度PSD的偏移量。
本公开的上述实施例，将单播/组播业务跟资源关联起来，资源跟发送功率关联起来，这种关联可以是一种静态的关联(比如通过预先配置的方式，为上述专用时分资源池配置对应的发送功率)，也可以是一种动态的关联(比如，终端根据自己的需求确定与资源对应的发送功率)。从而使得资源对应的资源复用地理范围是一致的，从而采用降低干扰，提高系统容量。
当考虑功率控制时，考虑到PSCCH主要起到通知别的节点自身资源占用情况的作用，即在一些场景下PSCCH的发送功率和PSSCH的发送功率的控制可以是一致的，但是在另外一些场景下，两者的发送功率的控制需要做一些差异化的处理。比如，对应于不同的场景，可能有多种实现：
第一种实现：PSCCH的发送功率和PSSCH的发送功率做差异化处理包括：PSCCH的发送功率不变，即对应的资源复用地理范围不变，但是PSSCH降低发送功率，从而减少资源复用地理范围，增加资源复用率。
具体来说，PSCCH和PSSCH分开，业务信道PSSCH降低发送功率，但是在控制信道(PSCCH或者专门的控制信道上)并不能降低发送功率。
也就是说，PSCCH按照原有发送功率，使得别的节点可以感知到该资源占用信息。同时，在PSCCH中对PSSCH上的发送功率做一定的指示；即SCI中增加PSSCH发送功率的指示。即从资源复用的角度并不提高容量，但降低PSSCH上的干扰，一定程度上提高系统的容量。
具体的发送功率取值，与PSCCH/PSSCH采用TDM(时分复用)还是FDM(频分复用)方式有关，R14 per UE PSSCH/PSSCH采用FDM方式下，PSCCH相比较于PSSCH有3dB的PSD offset,然后以PRB(物理资源块)平分。单播/组播相对于广播业务的发送功率是一个相对值。无论NR中PSCCH/PSSCH采用TDM还是FDM的方式，对于单播/组播而言，对于PSCCH发送功率值与广播一样，对于PSSCH，其发送功率值相对于广播业务可以根据需求降低。
接收节点可以根据解析的PSCCH信息对相应的处理，对于这部分PSSCH资源占用，如果使用同时隙的资源，都需要做类似处理，即只有相同或者类似通信需求的节点才可以占用这一部分PSSCH资源。
进一步，以时隙为单位，在自主选择资源时，不考虑占用通信距离范围/发送功率差距比较大的资源所在的时隙资源。排除通信距离范围/发送功率差距比较大的资源所在的时隙资源，如果剩余的资源不够选择的时候，按照差值的大小进行有限选择，首先选择差值比较小的资源进行频分复用。
第二种实现：PSCCH的发送功率和PSSCH的发送功率的控制一致，PSCCH以及PSSCH上都减少资源复用地理范围，增加资源复用率。
如果是终端自主选择资源：在预分配有专用时分发送资源池的情况下，可以基本对专用时分发送资源池的最大发送功率，进行PSCCH的发送功率的控制以及PSSCH的发送功率的控制，其中，不同的专用时分发送资源池分配有不同的最大发送功率。
如果是通过调度方式进行选择资源，即基站选择资源：如上述基站调度过程中的步骤1、2和3。
本公开的上述实施例，将PSCCH和PSSCH的功率控制作为一个开关， 需要满足一定的条件下才可以使用，从而可以通过功率控制满足单播/组播的通信距离范围需求。
如图2所示，本公开的实施例还提供一种终端20，包括：
处理器22，用于在预定发送资源上发送单播/组播业务时，确定所述预定发送资源对应的发送功率；
收发机21，用于在所述预定发送资源上，按照所述发送功率发送所述单播/组播业务，所述发送功率小于系统配置的最大发送功率。
其中，所述处理器22具体用于：确定所述预定发送资源对应物理直通链路控制信道PSCCH的发送功率以及物理直通链路共享信道PSSCH的发送功率；
其中，所述PSSCH的发送功率由所述PSCCH指示；所述PSCCH的发送功率和所述PSSCH的发送功率之和小于系统配置的最大发送功率。
所述处理器22具体用于：从系统配置的单播/组播业务与广播业务的共享发送资源池或者专用时分资源池中，自主选择所述预定发送资源或者通过网络设备调度的方式选择所述预定发送资源；
对所述预定发送资源对应的物理直通链路控制信道PSCCH的发送功率以及物理直通链路共享信道PSSCH的发送功率进行控制处理，得到发送所述单播/组播业务的发送功率。
所述处理器22对所述预定发送资源对应的物理直通链路控制信道PSCCH的发送功率以及物理直通链路共享信道PSSCH的发送功率进行控制，得到发送所述单播/组播业务的发送功率，具体用于：降低所述PSCCH的发送功率和所述PSSCH的发送功率，得到发送所述单播/组播业务的发送功率，所述PSCCH的发送功率和所述PSSCH的发送功率之间具有一满足功率谱密度PSD的偏移量。
所述处理器22具体用于：从为所述单播/组播业务配置的专用时分发送资源池中，自主选择所述预定发送资源；其中，一个时分发送资源池配置有一单播/组播业务的发送功率；
按照所述时分发送资源池配置的发送功率，确定所述预定发送资源对应的物理直通链路控制信道PSCCH的发送功率以及物理直通链路共享信道 PSSCH的发送功率；所述PSCCH的发送功率和所述PSSCH的发送功率之间具有一满足功率谱密度PSD的偏移量。
所述处理器22具体用于：从系统配置的单播/组播业务与广播业务的共享发送资源池中，自主选择所述预定发送资源；
保持所述预定发送资源对应的物理直通链路控制信道PSCCH的发送功率不变以及降低物理直通链路共享信道PSSCH的发送功率。
所述处理器通过网络设备调度的方式，选择所述预定发送资源，具体用于：
控制所述收发机向网络设备发送资源调度请求信息，所述资源调度请求信息包括：预期发送功率、包含通信距离范围在内的服务质量QoS参数、通信距离范围和资源复用地理范围中的至少一项；
所述收发机21接收所述网络设备发送的调度信令，根据所述调度信令，确定所述网络设备根据所述调度请求信息配置的所述预定发送资源。
所述收发机21向网络设备发送资源调度请求信息时，具体用于：通过用户设备辅助信息或者直通链路用户信息或者介质访问控制控制单元MAC CE，向网络设备发送资源调度请求信息。
对于单播业务，包含服务质量QoS参数中的通信距离范围由高层确定，所述通信距离范围通过基本安全业务相关的信息获取，所述预期发送功率根据对应链路下目标终端可以正确接收进行确定；
对于组播业务，所述通信距离范围是组内车车之间最远距离，所述预期发送功率根据组内链路之间最差的信道质量确定。
所述网络设备根据所述调度请求信息配置的所述预定发送资源时，对于同一个时频资源，分配给通信距离范围或者预期发送功率相同或者相差小于一预设值的终端。
从系统配置的单播/组播业务与广播业务的共享发送资源池中，自主选择所述预定发送资源时，所述预定发送资源为：与所述终端上一次发送单播/组播业务的资源上的发送功率相同的资源，或者，与所述终端上一次发送单播/组播业务的资源上的发送功率的差值小于一预设值的资源。
若所述差值包括多个时，选择差值最小的资源作为所述预定发送资源。
需要说明的是，该实施例是与上述方法对应的终端，上述方法实施例中的所有实现方式均适用于该终端的实施例中，也能达到相同的技术效果。该终端的实施例中，还可以进一步包括存储器23，该处理器22、存储器23均可以通过总线接口与收发机21通信连接，处理器22的功能也可以由收发机21实现，收发机21的功能也可以由处理器22实现。
本公开的实施例还提供一种业务的发送装置，包括：
处理模块，用于在预定发送资源上发送单播/组播业务时，确定所述预定发送资源对应的发送功率；
收发模块，用于在所述预定发送资源上，按照所述发送功率发送所述单播/组播业务，所述发送功率小于系统配置的最大发送功率。
其中，所述处理模块具体用于：确定所述预定发送资源对应物理直通链路控制信道PSCCH的发送功率以及物理直通链路共享信道PSSCH的发送功率；
其中，所述PSSCH的发送功率由所述PSCCH指示；所述PSCCH的发送功率和所述PSSCH的发送功率之和小于系统配置的最大发送功率。
所述处理模块具体用于：从系统配置的单播/组播业务与广播业务的共享发送资源池或者专用时分资源池中，自主选择所述预定发送资源或者通过网络设备调度的方式选择所述预定发送资源；
对所述预定发送资源对应的物理直通链路控制信道PSCCH的发送功率以及物理直通链路共享信道PSSCH的发送功率进行控制处理，得到发送所述单播/组播业务的发送功率。
所述处理模块对所述预定发送资源对应的物理直通链路控制信道PSCCH的发送功率以及物理直通链路共享信道PSSCH的发送功率进行控制，得到发送所述单播/组播业务的发送功率，具体用于：降低所述PSCCH的发送功率和所述PSSCH的发送功率，得到发送所述单播/组播业务的发送功率，所述PSCCH的发送功率和所述PSSCH的发送功率之间具有一满足功率谱密度PSD的偏移量。
所述处理模块具体用于：从为所述单播/组播业务配置的专用时分发送资源池中，自主选择所述预定发送资源；其中，一个时分发送资源池配置有一 单播/组播业务的发送功率；
按照所述时分发送资源池配置的发送功率，确定所述预定发送资源对应的物理直通链路控制信道PSCCH的发送功率以及物理直通链路共享信道PSSCH的发送功率；所述PSCCH的发送功率和所述PSSCH的发送功率之间具有一满足功率谱密度PSD的偏移量。
所述处理模块具体用于：从系统配置的单播/组播业务与广播业务的共享发送资源池中，自主选择所述预定发送资源；
保持所述预定发送资源对应的物理直通链路控制信道PSCCH的发送功率不变以及降低物理直通链路共享信道PSSCH的发送功率。
所述处理模块通过网络设备调度的方式，选择所述预定发送资源，具体用于：
控制所述收发模块向网络设备发送资源调度请求信息，所述资源调度请求信息包括：预期发送功率、包含通信距离范围在内的服务质量QoS参数、通信距离范围和资源复用地理范围中的至少一项；
所述收发模块接收所述网络设备发送的调度信令，根据所述调度信令，确定所述网络设备根据所述调度请求信息配置的所述预定发送资源。
所述收发模块向网络设备发送资源调度请求信息时，具体用于：通过用户设备辅助信息或者直通链路用户信息或者介质访问控制控制单元MAC CE，向网络设备发送资源调度请求信息。
对于单播业务，包含服务质量QoS参数中的通信距离范围由高层确定，所述通信距离范围通过基本安全业务相关的信息获取，所述预期发送功率根据对应链路下目标终端可以正确接收进行确定；
对于组播业务，所述通信距离范围是组内车车之间最远距离，所述预期发送功率根据组内链路之间最差的信道质量确定。
所述网络设备根据所述调度请求信息配置的所述预定发送资源时，对于同一个时频资源，分配给通信距离范围或者预期发送功率相同或者相差小于一预设值的终端。
从系统配置的单播/组播业务与广播业务的共享发送资源池中，自主选择所述预定发送资源时，所述预定发送资源为：与所述终端上一次发送单播/组 播业务的资源上的发送功率相同的资源，或者，与所述终端上一次发送单播/组播业务的资源上的发送功率的差值小于一预设值的资源。
若所述差值包括多个时，选择差值最小的资源作为所述预定发送资源。
本公开的实施例还提供一种终端，包括：处理器，被配置为执行如下功能：在预定发送资源上发送单播/组播业务时，确定所述预定发送资源对应的发送功率，在所述预定发送资源上，按照所述发送功率发送所述单播/组播业务，所述发送功率小于系统配置的最大发送功率。上述方法实施例中的所有实现方式均适用于该终端的实施例中，也能达到相同的技术效果。
本公开的实施例还提供一种计算机存储介质，包括指令，当所述指令在计算机运行时，使得计算机执行如上所述的方法。
本公开的上述实施例，通过在预定发送资源上发送单播/组播业务时，确定所述预定发送资源对应的发送功率；在所述预定发送资源上，按照所述发送功率发送所述单播/组播业务，所述发送功率小于系统配置的最大发送功率。使得单播组播将业务跟资源关联起来，资源跟发送功率关联起来，从而可以通过功率控制满足单播/组播的通信距离范围需求。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本公开的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本公开所提供的实施例中，应该理解到，所揭露的装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接， 可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本公开各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本公开的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案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中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本公开各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质。
此外，需要指出的是，在本公开的装置和方法中，显然，各部件或各步骤是可以分解和/或重新组合的。这些分解和/或重新组合应视为本公开的等效方案。并且，执行上述系列处理的步骤可以自然地按照说明的顺序按时间顺序执行，但是并不需要一定按照时间顺序执行，某些步骤可以并行或彼此独立地执行。对本领域的普通技术人员而言，能够理解本公开的方法和装置的全部或者任何步骤或者部件，可以在任何计算装置(包括处理器、存储介质等)或者计算装置的网络中，以硬件、固件、软件或者它们的组合加以实现，这是本领域普通技术人员在阅读了本公开的说明的情况下运用他们的基本编程技能就能实现的。
因此，本公开的目的还可以通过在任何计算装置上运行一个程序或者一组程序来实现。所述计算装置可以是公知的通用装置。因此，本公开的目的也可以仅仅通过提供包含实现所述方法或者装置的程序代码的程序产品来实现。也就是说，这样的程序产品也构成本公开，并且存储有这样的程序产品 的存储介质也构成本公开。显然，所述存储介质可以是任何公知的存储介质或者将来所开发出来的任何存储介质。还需要指出的是，在本公开的装置和方法中，显然，各部件或各步骤是可以分解和/或重新组合的。这些分解和/或重新组合应视为本公开的等效方案。并且，执行上述系列处理的步骤可以自然地按照说明的顺序按时间顺序执行，但是并不需要一定按照时间顺序执行。某些步骤可以并行或彼此独立地执行。
以上所述的是本公开的可选实施方式，应当指出对于本技术领域的普通人员来说，在不脱离本公开所述的原理前提下还可以作出若干改进和润饰，这些改进和润饰也在本公开的保护范围内。

Claims (15)

  1. 一种业务的发送方法，应用于支持V2X业务的发送终端，包括：
    在预定发送资源上发送单播/组播业务时，确定所述预定发送资源对应的发送功率；
    在所述预定发送资源上，按照所述发送功率发送所述单播/组播业务，所述发送功率小于系统配置的最大发送功率。
  2. 根据权利要求1所述的业务的发送方法，其中，确定所述预定发送资源对应的发送功率，包括：
    确定所述预定发送资源对应物理直通链路控制信道PSCCH的发送功率以及物理直通链路共享信道PSSCH的发送功率；
    其中，所述PSSCH的发送功率由所述PSCCH指示；所述PSCCH的发送功率和所述PSSCH的发送功率之和小于系统配置的最大发送功率。
  3. 根据权利要求2所述的业务的发送方法，其中，确定所述预定发送资源对应物理直通链路控制信道PSCCH的发送功率以及物理直通链路共享信道PSSCH的发送功率，包括：
    从系统配置的单播/组播业务与广播业务的共享发送资源池中，自主选择所述预定发送资源或者通过网络设备调度的方式选择所述预定发送资源；
    对所述预定发送资源对应的物理直通链路控制信道PSCCH的发送功率以及物理直通链路共享信道PSSCH的发送功率进行控制处理，得到发送所述单播/组播业务的发送功率。
  4. 根据权利要求3所述的业务的发送方法，其中，对所述预定发送资源对应的物理直通链路控制信道PSCCH的发送功率以及物理直通链路共享信道PSSCH的发送功率进行控制，得到发送所述单播/组播业务的发送功率，包括：
    降低所述PSCCH的发送功率和所述PSSCH的发送功率，得到发送所述单播/组播业务的发送功率，所述PSCCH的发送功率和所述PSSCH的发送功率之间具有一满足功率谱密度PSD的偏移量。
  5. 根据权利要求2所述的业务的发送方法，其中，确定所述预定发送资 源对应的物理直通链路控制信道PSCCH的发送功率以及物理直通链路共享信道PSSCH的发送功率，包括：
    从系统配置的单播/组播业务与广播业务的共享发送资源池中，自主选择所述预定发送资源；
    保持所述预定发送资源对应的物理直通链路控制信道PSCCH的发送功率不变以及降低物理直通链路共享信道PSSCH的发送功率。
  6. 根据权利要求3所述的业务的发送方法，其中，通过网络设备调度的方式，选择所述预定发送资源，包括：
    向网络设备发送资源调度请求信息，所述资源调度请求信息包括：预期发送功率、包含通信距离范围在内的服务质量QoS参数、通信距离范围和资源复用地理范围中的至少一项；
    接收所述网络设备发送的调度信令，根据所述调度信令，确定所述网络设备根据所述调度请求信息配置的所述预定发送资源。
  7. 根据权利要求6所述的业务的发送方法，其中，向网络设备发送资源调度请求信息，包括：
    通过用户设备辅助信息或者直通链路用户信息或者介质访问控制控制单元MAC CE，向网络设备发送资源调度请求信息。
  8. 根据权利要求7所述的业务的发送方法，其中，
    对于单播业务，包含服务质量QoS参数中的通信距离范围由高层确定，所述通信距离范围通过基本安全业务相关的信息获取，所述预期发送功率根据对应链路下目标终端可以正确接收进行确定；
    对于组播业务，所述通信距离范围是组内车车之间最远距离，所述预期发送功率根据组内链路之间最差的信道质量确定。
  9. 根据权利要求6所述的业务的发送方法，其中，所述网络设备根据所述调度请求信息配置的所述预定发送资源时，对于同一个时频资源，分配给通信距离范围或者预期发送功率相同或者相差小于一预设值的终端。
  10. 根据权利要求3所述的业务的发送方法，其中，从系统配置的单播/组播业务与广播业务的共享发送资源池中，自主选择所述预定发送资源时，所述预定发送资源为：与所述终端上一次发送单播/组播业务的资源上的发送 功率相同的资源，或者，与所述终端上一次发送单播/组播业务的资源上的发送功率的差值小于一预设值的资源。
  11. 根据权利要求10所述的业务的发送方法，其中，若所述差值包括多个时，选择差值最小的资源作为所述预定发送资源。
  12. 一种终端，包括：
    处理器，用于在预定发送资源上发送单播/组播业务时，确定所述预定发送资源对应的发送功率；
    收发机，用于在所述预定发送资源上，按照所述发送功率发送所述单播/组播业务，所述发送功率小于系统配置的最大发送功率。
  13. 一种业务的发送装置，包括：
    处理模块，用于在预定发送资源上发送单播/组播业务时，确定所述预定发送资源对应的发送功率；
    收发模块，用于在所述预定发送资源上，按照所述发送功率发送所述单播/组播业务，所述发送功率小于系统配置的最大发送功率。
  14. 一种终端，包括：处理器，被配置为执行如下功能：在预定发送资源上发送单播/组播业务时，确定所述预定发送资源对应的发送功率，在所述预定发送资源上，按照所述发送功率发送所述单播/组播业务，所述发送功率小于系统配置的最大发送功率。
  15. 一种计算机存储介质，包括指令，当所述指令在处理器上运行时，使得处理器执行如权利要求1至11任一项所述的方法。
PCT/CN2019/111901 2018-10-19 2019-10-18 业务的发送方法、装置及终端 WO2020078456A1 (zh)

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