WO2017193307A1 - 通信方法、终端设备和网络设备 - Google Patents

通信方法、终端设备和网络设备 Download PDF

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Publication number
WO2017193307A1
WO2017193307A1 PCT/CN2016/081715 CN2016081715W WO2017193307A1 WO 2017193307 A1 WO2017193307 A1 WO 2017193307A1 CN 2016081715 W CN2016081715 W CN 2016081715W WO 2017193307 A1 WO2017193307 A1 WO 2017193307A1
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WIPO (PCT)
Prior art keywords
communication
service
terminal device
resource
network device
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PCT/CN2016/081715
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English (en)
French (fr)
Inventor
唐海
Original Assignee
广东欧珀移动通信有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 广东欧珀移动通信有限公司 filed Critical 广东欧珀移动通信有限公司
Priority to CN201680082717.2A priority Critical patent/CN108702660B/zh
Priority to EP16901262.2A priority patent/EP3410776A4/en
Priority to JP2018550348A priority patent/JP6987073B2/ja
Priority to US16/081,020 priority patent/US10924971B2/en
Priority to PCT/CN2016/081715 priority patent/WO2017193307A1/zh
Priority to KR1020187027350A priority patent/KR20190002431A/ko
Priority to TW106115181A priority patent/TW201740767A/zh
Publication of WO2017193307A1 publication Critical patent/WO2017193307A1/zh
Priority to HK18116055.8A priority patent/HK1256928A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/03—Reselecting a link using a direct mode connection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/364—Delay profiles
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0268—Traffic management, e.g. flow control or congestion control using specific QoS parameters for wireless networks, e.g. QoS class identifier [QCI] or guaranteed bit rate [GBR]
    • H—ELECTRICITY
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    • H—ELECTRICITY
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    • H04W36/033—Reselecting a link using a direct mode connection in pre-organised networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
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    • H04W56/0025—Synchronization between nodes synchronizing potentially movable access points
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    • H04W56/00—Synchronisation arrangements
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    • H04W76/23—Manipulation of direct-mode connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
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    • H04W8/00—Network data management
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    • H—ELECTRICITY
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    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
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    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
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    • H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
    • H—ELECTRICITY
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    • H04W92/00—Interfaces specially adapted for wireless communication networks
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    • H04W92/10—Interfaces between hierarchically different network devices between terminal device and access point, i.e. wireless air interface
    • H—ELECTRICITY
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    • H—ELECTRICITY
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/18—Interfaces between hierarchically similar devices between terminal devices

Definitions

  • the present application relates to the field of communications, and more particularly to a communication method, a terminal device, and a network device.
  • communication can be performed through the Uu interface, that is, the terminals communicate with each other through the terminal of the base station, but the delay of the communication method is long, the communication quality is poor, and the user experience is poor. .
  • the embodiment of the present application provides a communication method, a terminal device, a network device, and a storage medium, which can reduce the delay and improve the communication quality.
  • a communication method comprising:
  • the terminal device determines that the communication of the first service based on the Uu interface cannot meet the communication requirement of the first service; or the terminal device determines that the communication of the first service is currently performed based on the Uu interface, and the radio link fails;
  • the terminal device performs communication of the first service by using a terminal directly connected to the D2D communication mode.
  • the terminal device determines that the communication of the first service that is currently performed by the Uu interface cannot meet the communication requirement of the first service, including:
  • the terminal device determines that the delay of the communication of the first service based on the Uu interface cannot meet the quality of service QoS requirement of the first service.
  • the terminal device performs the communication of the first service by using a D2D communication manner, including:
  • the terminal device monitors whether a resource pool for D2D communication has an idle resource
  • the idle resource When the idle resource exists, the idle resource is used to perform communication of the first service.
  • the terminal device monitors whether a resource pool used for D2D communication is idle. Before the resource, the method further includes:
  • the method further includes:
  • the terminal device sends a first message to the network device, where the first message is used to indicate that the communication of the first service based on the Uu interface cannot meet the communication requirement of the first service;
  • the terminal device performs the communication of the first service by using the terminal directly connected to the D2D communication mode, and the method includes: the terminal device adopts the resource configured by the network device for the terminal device, and performs direct D2D communication mode using the terminal.
  • the communication of the first service includes: the terminal device adopts the resource configured by the network device for the terminal device, and performs direct D2D communication mode using the terminal. The communication of the first service.
  • the terminal device performs the communication of the first service by using a terminal directly connected D2D communication manner, including :
  • the terminal device receives the second message after performing the communication of the first service by using an idle resource in a resource pool for D2D communication, the terminal device abandons using the idle resource to perform the The communication of the first service is performed by using the resource configured by the network device for the terminal device, and the communication of the first service is performed by using a terminal directly connected to the D2D communication mode.
  • the terminal device performs the communication of the first service by using a terminal directly connected D2D communication manner, including :
  • the terminal device discards the communication using the idle resource to perform the first service, and adopts the The network device configures the resource of the terminal device, and performs communication of the first service by using a terminal directly connected to the D2D communication mode.
  • the method before the receiving, by the terminal device, the second message sent by the network device, the method further includes :
  • the terminal device reports the amount of data to be sent to the network device
  • Receiving, by the terminal device, the second message sent by the network device comprising: receiving, by using the scrambling code sequence number, the second message that is sent by the network device according to the data volume.
  • the terminal device performs the communication of the first service by using a terminal directly connected D2D communication manner, including :
  • a communication method including:
  • the terminal device performs communication of the first service by using a D2D communication mode.
  • the terminal device performs the communication of the first service by using a D2D communication manner, including:
  • the terminal device monitors whether a resource pool for D2D communication has an idle resource
  • the idle resource When the idle resource exists, the idle resource is used to perform communication of the first service.
  • the indication information further includes a resource for D2D communication
  • the terminal device performs communication of the first service by using a D2D communication mode, including:
  • the terminal device performs communication of the first service by using the D2D communication mode and using the indicated resource indicated by the indication information.
  • the method before the receiving, by the terminal device, the indication message sent by the network device, the method further includes:
  • the terminal device sends a notification message to the network device, where the notification message is used to indicate whether the delay or delay of the first service based on the Uu interface meets the QoS requirement.
  • the notification message is further used to indicate a delay of another service that performs communication based on the Uu interface. Or whether the delay meets the QoS requirements.
  • a communication method including:
  • the network device determines that the first service currently based on the Uu interface communication needs to perform D2D communication
  • indication information where the indication information is used to indicate that the communication of the first service is switched from a Uu interface-based communication mode to a D2D communication mode.
  • the indication information further includes a resource for D2D communication.
  • the method further includes:
  • a communication method including:
  • the terminal device determines the amount of data of the data to be transmitted in the current D2D communication mode
  • the terminal device reports the amount of data to the network device
  • D2D communication is performed using idle resources in the resource pool, wherein the resource pool includes resources that can be used for D2D communication.
  • Performing D2D communication by using the idle resource in the resource pool if the resource allocation message is not received when the first timer arrives, performing D2D communication by using the idle resource in the resource pool;
  • Performing D2D communication for the to-be-sent data by using the resource indicated by the resource allocation message including:
  • the terminal device abandons the use of the idle resource to perform the first service. Communicating, and using the resource indicated by the resource allocation message, performing communication of the first service by using a terminal direct connection D2D communication mode.
  • the method further includes:
  • a terminal device for performing the method of any of the first aspect or the first aspect of the first aspect.
  • the terminal device comprises means for performing the method of any of the above-described first aspect or any of the possible implementations of the first aspect.
  • a terminal device for performing the method in any of the above-mentioned second aspect or any possible implementation of the second aspect.
  • the terminal device comprises means for performing the method of any of the above-described second or second aspects of the second aspect.
  • a network device for performing the method in any of the possible implementations of the third aspect or the third aspect above.
  • the network device comprises means for performing the method of any of the possible implementations of the third aspect or the third aspect described above.
  • a terminal device for performing the method in any of the above-mentioned fourth aspect or any possible implementation of the fourth aspect.
  • the terminal device comprises means for performing the method of any of the above mentioned fourth or fourth aspects of the fourth aspect.
  • a terminal device comprising: a memory for storing an instruction, the processor for executing an instruction stored by the memory, and when the processor executes the instruction stored by the memory, Executing the method of causing the processor to perform the first aspect or any of the possible implementations of the first aspect.
  • a terminal device comprising: a memory for storing an instruction, the processor for executing an instruction stored by the memory, and when the processor executes the instruction stored by the memory, Executing the method of causing the processor to perform the second aspect or any of the possible implementations of the second aspect.
  • a network device comprising: a memory and a processor for storing instructions for executing instructions stored by the memory, and when the processor executes the instructions stored by the memory, The execution causes the processor to perform the method of any of the possible implementations of the third aspect or the third aspect.
  • a terminal device includes: a memory for storing an instruction for executing an instruction stored by the memory, and a processor, and when the processor executes the instruction stored by the memory, The execution causes the processor to perform the method of any of the possible implementations of the fourth aspect or the fourth aspect.
  • a computer storage medium having stored therein program code for indicating a method of performing the first aspect or any of the possible implementations of the first aspect.
  • a computer storage medium having program code for indicating execution of the method of any of the second aspect or the second aspect of the second aspect.
  • a computer storage medium having stored therein program code for indicating a method of performing any of the above third aspect or any of the possible implementations of the third aspect.
  • a computer storage medium having program code stored therein for indicating a method of performing any of the above-described fourth aspect or any of the possible implementations of the fourth aspect.
  • FIG. 1 is a schematic flowchart of a communication method according to an embodiment.
  • FIG. 2 is a schematic flow chart of a communication method according to an embodiment.
  • FIG. 3 is a schematic flowchart of a communication method according to an embodiment.
  • FIG. 4 is a schematic block diagram of a terminal device according to an embodiment.
  • FIG. 5 is a schematic block diagram of a terminal device according to an embodiment.
  • Figure 6 is a schematic block diagram of a network device in accordance with an embodiment.
  • FIG. 7 is a schematic block diagram of a terminal device according to an embodiment.
  • Figure 8 is a schematic block diagram of a communication device in accordance with an embodiment.
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • LTE-A Advanced Long Term Evolution
  • UMTS Universal Mobile Telecommunication System
  • Device to Device (D2D) communication may refer to vehicle to vehicle (V2V) communication, or V2X communication.
  • V2V vehicle to vehicle
  • X can refer to any device with wireless receiving and transmitting capabilities, such as but not limited to slow moving wireless devices, fast moving in-vehicle devices, or network control nodes with wireless transmit and receive capabilities.
  • the embodiment of the present application may not be used for D2D communication, but is used for communication between the terminal and the cellular network.
  • the terminal device may also be referred to as an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or a user.
  • the access terminal may be a cellular phone, a cordless phone, a SIP (Session Initiation Protocol) phone, a WLL (Wireless Local Loop) station, a PDA (Personal Digital Assistant), and a wireless communication.
  • the network device can be used to communicate with the mobile device, and the network device can be a GSM (Global System of Mobile communication) or a BTS (Base Transceiver Station) in CDMA (Code Division Multiple Access). It may be an NB (NodeB, base station) in WCDMA (Wideband Code Division Multiple Access), or an eNB or an eNodeB (Evolutional Node B) in LTE (Long Term Evolution). ), or a relay station or access point, or an in-vehicle device, a wearable device, and a network device in a future 5G network.
  • GSM Global System of Mobile communication
  • BTS Base Transceiver Station
  • CDMA Code Division Multiple Access
  • NB NodeB, base station
  • WCDMA Wideband Code Division Multiple Access
  • eNB or an eNodeB Evolutional Node B
  • LTE Long Term Evolution
  • the communication interface between the terminal and the network device may be referred to as a Uu interface, and the direct connection between the terminal device and the terminal device may be referred to as a PC5 interface.
  • the sending end adds time indication information to the sending packet, where the time indicating information is used by the receiving end to obtain the delay of the sending end to the receiving end.
  • the sending packet is a Packet Data Convergence Protocol (PDCP) layer packet, a Radio Link Control (RLC) layer packet, or a Media Access Control (MAC) layer packet.
  • PDCP Packet Data Convergence Protocol
  • RLC Radio Link Control
  • MAC Media Access Control
  • the sending packet is a data packet or a dedicated delay detecting packet.
  • step B the transmitting end sends the sending packet to the receiving end.
  • the sending end determines that a quality of service (QoS) of the service corresponding to the delay from the sending end to the receiving end is obtained, and the sending end sends the sending packet to the receiving end according to the corresponding quality of service QoS. .
  • QoS quality of service
  • step C the receiving end receives the sending packet sent by the sending end, where the sending packet includes time indication information.
  • the receiving end parses the time identification information in the same layer that adds the time identification information to the sending end. For example, if the sending end adds the time identification information to the MAC layer, the receiving end parses the time identification information at the MAC layer.
  • step D according to the time indication information, the receiving end determines a delay from the transmitting end to the receiving end.
  • the sending end may send the sending packet by using multiple paths, and the receiving end receives the sending packet sent by the sending end by using multiple paths, and determining each path of the multiple paths. Delay.
  • the sending packet may include path information of the corresponding path in the sending packet, or the path information of the path added by the intermediate node that sends the packet to the packet.
  • the time indication information included in the sending packet sent by the sending end may include a starting time point at which the sending end processes the sending packet, and the receiving end may according to the end time point of processing the sending packet.
  • the difference from the start time point is used to determine the delay from the sender to the receiver.
  • the starting time point at which the transmitting end processes the sending packet refers to the time point at which the packet is obtained or the time point at which the packet is started to be generated; the ending time point at which the receiving end processes the transmitting packet may refer to a point in time at which the packet is parsed.
  • the foregoing start time point and end time point may be absolute time, for example, Coordinated Universal Time (UTC), Beidou, and GPS corresponding absolute time, then the end time point and the start time point may be directly The difference is the delay from the sender to the receiver.
  • UTC Coordinated Universal Time
  • Beidou Beidou
  • the above start time point and end time point may not be absolute time, for example, may be a communication system
  • the defined time for example, the time represented by the subframe or time slot, needs to determine the delay from the sender to the receiver according to the synchronization time deviation between the sender and the receiver, and according to the difference between the end point and the start time. .
  • the synchronization time deviation between the sender and the receiver may be calculated according to the synchronization time offset between any two nodes from the sender to the receiver.
  • the node may determine the synchronization time deviation from the previous node, and record the synchronization time offset in the transmission packet.
  • the sender to the receiver need to go through node 1 and node 2.
  • node 1 can obtain the synchronization time deviation between the sender and node 1, and record it in the transmission packet;
  • node 2 receives the transmission.
  • the synchronization time deviation between node 1 and node 2 can be obtained and recorded in the transmission packet, wherein the synchronization time deviation between node 1 and node 2 can be accumulated and recorded in the transmission packet with the previous synchronization time deviation.
  • the synchronization time deviation between node 1 and node 2 is added to the previous synchronization time deviation, and the recorded synchronization time deviation is changed to the added synchronization time deviation, or the synchronization between node 1 and node 2
  • the time deviation can be separately recorded in an information field; after receiving the transmission packet, the receiving end can acquire the synchronization time deviation between the node 2 and the receiving end, and obtain the synchronization time between the transmitting end and the node 2 according to the record of the sending packet. Deviation, so that the synchronization time deviation between the sender and the receiver can be obtained.
  • the sending end may add the processing delay for processing the sending packet to the sending packet, and after receiving the sending packet, the intermediate node may add the processing delay and the transmission delay between the previous node to the sending packet.
  • the intermediate node may separately record the processing delay and the transmission delay in different information fields in the sending packet; or, the intermediate node may record the sum of the processing delay and the transmission delay obtained by the node in the information field.
  • the intermediate node can accumulate processing delays with other nodes to process delays in one information field, and transmit delays with other nodes to obtain transmission delay records.
  • the intermediate node In another information field; or, the intermediate node accumulates the sum of the transmission delay and the processing delay with the sum of the processing delay and the transmission delay of the transmission packet record, and updates the record.
  • the sending end After receiving the sending packet, the sending end may obtain the delay between the transmitting end and the receiving end according to the indication of the time indication information in the sending packet.
  • the time indication information includes a processing delay that the sending end processes the sending packet, and includes where the intermediate packet is processed by any intermediate node between the sending end and the receiving end.
  • the delay is transmitted, and the transmission delay between the node and the previous node is obtained, and the processing delay of the different nodes processing the sending packet is carried in different information fields of the sending packet, and the transmission acquired by different nodes is performed.
  • the delay is carried in different information fields of the sending packet, and the processing delay and the transmission delay of the same node are carried in different information fields of the sending packet.
  • the receiving end determines the processing delay of the receiving end to process the sending packet and the transmission delay of the receiving end and the previous node of the receiving end; processing the processing delay of the sending packet according to the sending end, any intermediate node The processing delay of processing the sent packet, the transmission delay of the previous node acquired by any intermediate node, the processing delay of the receiving end processing the transmitting packet, and the transmission delay of the receiving end and the previous node of the receiving end And determine the delay from the sender to the receiver.
  • the sender to the receiver need to go through node 1 and node 2.
  • the processing delay (for example, 1 ms) of the sender processing the transmitted packet is recorded in the information field, and the node 1 receives the transmission packet and acquires the transmission from the receiver to the node 1.
  • the delay is 0.5 ms
  • the processing delay for processing the transmitted packet is 1 ms
  • 0.5 ms and 1 ms are respectively recorded in different information fields; the node 2 receives the transmission packet and acquires the transmission delay from the node 1 to the node 2 by 0.6.
  • the processing delay for acquiring the transmitted packet is 1.1 ms, and the 0.6 ms and 1.1 ms are respectively recorded in different information fields;
  • the receiving end receives the transmission packet, and obtains the transmission delay from the node 2 to the receiving end by 0.4 ms.
  • processing the transmission packet with a processing delay of 1.2 ms, and acquiring 1 ms, 1 ms, 0.5 ms, 0.6 ms, 1.1 ms recorded in the transmission packet, which will be 1 ms, 1 ms, 0.5 ms, 0.6 ms, 1.1 ms, 0.4 ms, and 1.2.
  • the time value obtained by adding the ms is used to determine the delay from the receiving end of the transmitting end.
  • the time indication information includes a processing delay of the sending end processing the sending packet, and processing delays of processing the sending packet by any intermediate node from the sending end to the receiving end, and the previous node The sum of the transmission delays; wherein the sum of the processing delay of the different nodes processing the transmission packet and the obtained transmission delay is carried in different information fields of the transmission packet.
  • the receiving end determines the processing delay of the receiving end to process the sending packet and the transmission delay of the receiving end and the previous node of the receiving end; according to the processing delay of the sending end processing the sending packet, the sending delay Any node of the previous node that is connected to the receiving end processes the processing delay of the sending packet and the sum of the obtained transmission delay with the previous node, and the receiving end processes the processing delay of the transmitting packet, and the receiving end and the receiving end The sum of the transmission delays of the previous node determines the delay from the sender to the receiver.
  • the sender to the receiver need to go through node 1 and node 2.
  • the processing delay (for example, 1 ms) of the sender processing the transmitted packet is recorded in the information field, and the node 1 receives the transmission packet and acquires the transmission from the receiver to the node 1.
  • the delay is 0.5ms, and the processing delay for processing the sent packet is 1ms.
  • node 2 receives the transmission packet, acquires the transmission delay from node 1 to node 2, 0.6 ms, and acquires the processing delay of processing the transmission packet by 1.1 ms, and records 1.7 ms in
  • the receiving end receives different information fields; the receiving end receives the sending packet, obtains a transmission delay of 0.4 ms from the node 2 to the receiving end, and a processing delay of processing the transmitting packet by 1.2 ms, and acquires 1 ms and 1.5 ms recorded in the transmitting packet.
  • the time value obtained by adding 1ms, 1.5ms, 1.7ms, 0.4ms and 1.2ms is used to determine the delay from the receiving end of the transmitting end.
  • the time indication information includes a processing delay of the sending end processing the sending packet, a processing delay of processing the sending packet by the intermediate node between the sending end and the receiving end, and an acquisition by any intermediate node. The sum of the transmission delays of the previous node.
  • the receiving end determines a processing delay of the receiving end processing the sending packet, and a transmission delay from the previous node of the receiving end to the receiving end; and processing delay of processing the sending packet by the sending end according to the time indication information
  • the intermediate node between the transmitting end and the receiving end processes the processing delay of the sending packet and the sum of the transmission delays acquired by any intermediate node and the previous node, and the receiving end processes the processing delay of the sending packet, and
  • the delay from the transmitting end to the receiving end is determined from the sum of the previous node of the receiving end and the transmission delay of the receiving end.
  • the sender to the receiver need to go through node 1 and node 2.
  • the processing delay (for example, 1 ms) of the sender processing the transmitted packet is recorded in the information field, and the node 1 receives the transmission packet and acquires the transmission from the receiver to the node 1.
  • the delay is 0.5 ms, and the processing delay for processing the transmission packet is 1 ms, and the 1 ms recorded by the transmitting end is updated to 2.5 ms; the node 2 receives the transmission packet, and acquires the transmission delay from the node 1 to the node 2 by 0.6 ms.
  • processing delay is 1.2ms, and 14.2 recorded in the transmission packet is obtained, and the time value obtained by adding 4.2, 0.4ms and 1.2ms is used to determine the delay from the receiving end of the transmitting end.
  • the synchronization time deviation between the transmitting end and the receiving end is also required, wherein the synchronization time deviation between the transmitting end and the receiving end may be based on the sending end.
  • the synchronization time offset between any two nodes on the receiving end is calculated.
  • the node may determine the synchronization time deviation from the previous node, and record the synchronization time offset in the transmission packet.
  • each node records the synchronization time deviation from the previous node in the transmission packet, and may record separately or in combination with the processing delay and/or the transmission delay.
  • the sending package further includes at least one of a delay request, a receiving end list, and a feedback object.
  • the receiving end may determine whether the delay meets the delay requirement, and feed back the feedback object whether the delay from the sending end to the receiving end satisfies the delay requirement.
  • the receiving end can determine whether the delay meets the delay requirement, and feed back to the feedback object whether the delay from the sending end to the receiving end satisfies the delay requirement.
  • the feedback object of the delay may be a sender or a third-party entity, such as a network device.
  • the sending end receives the configuration information sent by the third-party entity, where the configuration information is used to indicate that the sending end sends the sending packet that carries the time indication information to the receiving end.
  • the sending end sends the sending packet to the receiving end through the Uu interface or the terminal direct connection port.
  • the time indication information is added to the sending packet, and the delay from the sending end to the receiving end can be accurately obtained.
  • FIG. 1 is a schematic flowchart of a communication method 100 according to an embodiment of the present application. As shown in FIG. 1, the method 100 includes 110 and 120.
  • the terminal device determines that the communication of the first service based on the Uu interface cannot meet the communication requirement of the first service; or the terminal device determines that the communication of the first service is currently performed based on the Uu interface, and the radio link fails.
  • the communication of the service based on the Uu interface cannot meet the communication requirement of the service, and the delay of the communication of the service based on the Uu interface cannot meet the quality of service (QoS) requirement of the service.
  • QoS quality of service
  • the terminal device performs communication of the first service by using a D2D communication mode.
  • the radio link fails. And the terminal device determines an idle resource in the resource pool for D2D communication; and performs communication of the first service by using the idle resource.
  • the terminal device can always listen to the idle resource in the resource pool. Once it is determined that the first service needs to be switched to the D2D communication mode, the monitored idle resource can be directly used. D2D communication for the first service. Alternatively, the terminal device may listen to the idle resource after determining that the first service needs to be switched to the D2D communication mode, and perform D2D communication by using the monitored idle resource. Optionally, after the D2D communication for the first service is performed by using the idle resource, the notification message may be sent to the network device, and the report has been switched to the D2D communication mode by using the idle resource for the first service.
  • the terminal device may determine the information of the resource pool by using a downlink broadcast channel sent by the network device.
  • the terminal device when the terminal device determines that the communication of the first service based on the Uu interface cannot meet the communication requirement of the first service, the terminal device sends a first message to the network device, where the first message is used to indicate that the The communication of the first service performed by the Uu interface cannot meet the communication requirement of the first service; the terminal device receives the second message sent by the network device, where the second message is used to indicate that the D2D mode configured for the terminal device is used to perform the A resource for communication of a service; the terminal device uses the resource configured by the network device for the terminal device, and performs communication of the first service by using a D2D communication mode.
  • the first message may directly indicate that the communication of the first service based on the Uu interface cannot meet the communication requirement of the first service.
  • the information corresponding to “satisfaction” or “not satisfied” may be directly carried in the first message, for example, 0 represents satisfaction and 1 represents dissatisfaction.
  • the foregoing first message may indirectly indicate that the communication of the first service currently performed based on the Uu interface cannot meet the communication requirement of the first service.
  • the first message may carry the communication delay of the Uu interface and carry the corresponding QoS requirement.
  • the delay may satisfy the QoS result, and may also carry the delay and the corresponding QoS requirement.
  • the terminal device can directly monitor the idle resource in the resource pool. If the idle resource is monitored, the idle resource can be used for communication, or the terminal device can also send the first message. Performing monitoring of the idle resources in the resource pool, waiting for the second message, and after receiving the second message, performing D2D communication for the first service according to the resources allocated in the second message message.
  • the terminal device if the terminal device receives the second message after performing the communication of the first service by using the idle resource in the resource pool, the terminal device abandons the communication using the idle resource to perform the first service, and adopts The network device configures the resource for the terminal device, and performs communication of the first service by using a D2D communication manner.
  • the terminal device may start the first timer, if The second message is not received in a timer, and the communication of the first service is performed by using an idle resource in the resource pool for D2D communication; the terminal device may also start the second timer after the first timer ends. If the second message is received in the second timer, the terminal device discards the communication using the idle resource to perform the first service, and uses the resource configured by the network device for the terminal device, and uses the terminal to directly connect to the D2D.
  • the communication mode performs communication of the first service.
  • the terminal device may not start the second timer after the end of the first timer, but directly monitor the idle resources in the resource pool, and adopt idle resources after monitoring the idle resources. Perform D2D communication for the first service.
  • the terminal device receives the scrambling code sequence number (specifically, a Radio Network Tempory Identity (RNTI)) sent by the network device, and the terminal device reports the data volume of the data to be sent to the network device, and uses the scrambling code.
  • the sequence number receives the second message sent by the network device according to the data volume, and performs D2D communication for the first service by using the resource executed by the second message.
  • the RNTI mentioned here may be an SL-RNTI (Sublink RNTI, sidelink-RNTI).
  • the terminal when the base station receives the message that the communication for the service sent by the terminal cannot meet the communication requirement, the terminal first allocates the SL_RNTI to the terminal, and when the new data arrives, the terminal can pass the buffer status report (BSR). The amount of data to be transmitted is reported to the base station, and then the terminal uses the SL_RNTI to listen to the D2D_grant allocated by the base station on the PDCCH (downlink control channel) (where D2D_ is the scheduling information for the terminal to specifically allocate resources). When the terminal does not detect the D2D_grant sent by the base station in the first timer (this may be caused by the terminal's own error detection), the terminal may use the idle resource of the resource pool to send.
  • BSR buffer status report
  • the terminal may ignore the scheduling information and continue to use the idle resources in the resource pool for D2D communication; or the terminal may also use the indication in the scheduling information. Resources for D2D communication.
  • the first timer or the second timer receives the second message, and the D2D_grant sent by the base station may be monitored by using the scrambling code sequence number.
  • the network device uses the network device to pre-configure resources for the first service, and performs communication of the first service by using a D2D communication manner.
  • the network device may pre-configure resources for the first service of the terminal device in advance, and the network device may have a high priority or a QoS service requirement, that is, the network service device may pre-configure resources for the first service of the terminal device.
  • the delay of the communication of the first service cannot meet the communication quality requirement, or When the wireless link fails, D2D communication for the first service can be performed,
  • a service that the terminal is performing on the Uu interface may have a high priority or QoS requirement, and the base station may reserve and configure resources based on the D2D communication for the service in advance, once the terminal discovers a delay of a certain service in the service. If the requirement is exceeded, the terminal can directly switch the service to the PC5 interface communication mode, and perform D2D communication by using the pre-allocated resources without reporting to the base station in advance. After that, the terminal can report to the base station, and the service has already communicated through the D2D communication mode based on the resources pre-configured for the service.
  • the wireless link occurs.
  • the Uu interface-based communication mode is switched to the D2D-based communication mode, and the communication of the first service is performed, which can reduce the delay and improve the communication quality.
  • FIG. 2 is a schematic flowchart of a communication method 200 according to an embodiment of the present application. As shown in FIG. 2, the method includes 210, 220, 230, and 240.
  • the network device determines that the first service currently communicating based on the Uu interface requires D2D communication.
  • the terminal device determines that the communication of the first service that is currently performed based on the Uu interface cannot meet the communication requirement of the first service (for example, the delay cannot meet the QoS requirement), and may send a notification message to the network device, where the notification message is sent.
  • the network device may be configured to perform D2D communication based on the first service of the Uu interface communication according to the notification message, according to whether the delay or delay of the first service that is communicated based on the Uu interface meets the QoS requirement.
  • the terminal device may send, to the network device, whether the delay or delay of all services currently performed based on the Uu interface meets the QoS requirement, and the network device may determine that all services whose delays do not meet the requirements are determined to be switched to the D2D communication.
  • the service in the mode, or optionally, the service whose partial delay meets the requirements is determined as the service to be switched to the D2D communication mode. For example, when the network device load is high, the network device may have a higher partial delay but still The service that meets the requirements is switched to the D2D communication mode.
  • the network device sends indication information to the terminal device, where the indication information is used to indicate that the communication of the first service is switched from the Uu interface-based communication mode to the D2D communication mode.
  • the terminal device receives an indication message sent by the network device.
  • the terminal device performs communication of the first service using a D2D communication method.
  • the indication information does not carry the resource allocated for the first service of the terminal, and the terminal may To monitor whether there is an idle resource in the resource pool for D2D communication, and when the idle resource exists, perform the D2D communication of the first service by using the idle resource.
  • the indication information carries a resource for performing D2D communication for the first service
  • the terminal device performs communication of the first service by using the resource indicated by the indication information by using the D2D communication mode.
  • the terminal device can switch the Uu interface-based communication mode to the D2D-based communication mode according to the indication of the network device, and perform service communication, thereby implementing a flexible communication mode, and thus can be reduced. Delay, improve communication quality.
  • FIG. 3 is a schematic flowchart of a communication method 300 according to an embodiment of the present application. As shown in FIG. 3, the method includes 310, 320, 330, 340, and 350.
  • the terminal device determines the amount of data of the data to be transmitted in the current D2D communication mode.
  • the terminal device reports the amount of data to the network device.
  • the network device allocates resources for the D2D communication to the terminal according to the data amount, and carries the resource information in the resource allocation message and sends the resource information to the terminal device.
  • the terminal device when the terminal device receives the resource allocation message, the terminal device performs D2D communication for the to-be-sent data by using the resource indicated by the resource allocation message, where the resource allocation message is used to indicate that A resource for performing D2D communication that is to be transmitted for data distribution.
  • D2D communication is performed using idle resources in a resource pool that includes resources that can be used for D2D communication when the resource allocation message is not received.
  • the first timer may be started. If the resource allocation message is not received in the first timer, the terminal device sends the resource using the idle resource in the resource pool for D2D communication. After the first timer expires, the terminal device may start the second timer. If the resource allocation message is received in the second timer, the terminal device abandons the idle resource and uses the network. The resource configured by the device for the terminal device performs the transmission of the transmission data by using the terminal directly connected to the D2D communication mode.
  • the terminal device may not start the second timer after the end of the first timer, but directly monitor the idle resources in the resource pool, and adopt idle resources after monitoring the idle resources. Send the data to be sent.
  • the terminal device receives the scrambling code serial number sent by the network device (specifically, may be SL_RNTI);
  • the terminal device reports the data volume of the data to be sent to the network device, and uses the scrambling code sequence number to receive the resource allocation message sent by the network device according to the data volume, and sends the data to be sent by using the resource indicated by the resource allocation message.
  • the terminal works in the D2D mode.
  • the terminal can report the amount of data to be sent by the terminal to the base station through a buffer status report (BSR), and then the terminal uses the SL_RNTI (the SL_RNTI can be in the buffer state).
  • BSR buffer status report
  • the network device allocates to the terminal on the PDCCH (downlink control channel) to listen to the D2D_grant allocated by the base station (where D2D_ is the scheduling information for the terminal to specifically allocate resources).
  • D2D_ is the scheduling information for the terminal to specifically allocate resources.
  • the terminal may use the idle resource of the resource pool to send.
  • the terminal may ignore the scheduling information, and continue to use the idle resources in the resource pool for D2D communication; or the terminal may also use the indication indicated in the scheduling information. Resources for D2D communication.
  • the scrambling code sequence number may be adopted when the first timer or the second timer receives the second message.
  • the terminal device reports the amount of data to be sent to the network device, and the network device allocates resources for the terminal device to perform transmission of the data to be sent according to the data amount, thereby avoiding waste of resources.
  • the resources allocated by the network device are not received, the idle resources in the resource pool are used for sending, so that the data can be sent in time, thereby reducing the delay and improving the communication quality.
  • FIG. 4 is a schematic block diagram of a terminal device 400 according to an embodiment of the present application. As shown in FIG. 4, the terminal device 400 includes:
  • the determining unit 410 is configured to determine that the communication of the first service that is currently performed based on the Uu interface cannot meet the communication requirement of the first service; or, when determining that the communication of the first service is currently performed based on the Uu interface, the radio link fails;
  • the executing unit 420 is configured to perform communication of the first service by using a terminal directly connected to the D2D communication mode.
  • the determining unit 410 is further configured to:
  • Determining the delay of the communication of the first service based on the Uu interface cannot satisfy the quality of service QoS requirement of the first service.
  • the executing unit 420 is specifically configured to:
  • the idle resource When the idle resource exists, the idle resource is used to perform communication of the first service.
  • the executing unit 420 is further configured to:
  • the executing unit 420 is further configured to:
  • the communication of the first service is performed by using the terminal directly connected to the D2D communication mode by using the resource configured by the network device for the terminal device.
  • the executing unit 420 is further configured to:
  • the execution unit After the execution unit performs communication of the first service by using idle resources in a resource pool for D2D communication, receiving the second message, discarding performing communication of the first service by using the idle resource And using the network device to configure the resource for the terminal device, and performing communication of the first service by using a terminal directly connected to the D2D communication mode.
  • the executing unit 420 is further configured to:
  • the idle communication is used to perform the communication of the first service, and the network device is used as the terminal device.
  • the configured resource performs communication of the first service by using a terminal directly connected to the D2D communication mode.
  • the executing unit 420 is further configured to:
  • the second message sent by the network device according to the data volume is received.
  • the executing unit 420 is further configured to:
  • terminal device 400 may correspond to the terminal device in the method 100, and the corresponding functions of the terminal device may be implemented. For brevity, no further details are provided herein.
  • FIG. 5 is a schematic block diagram of a terminal device 500 according to an embodiment of the present application. As shown in FIG. 5, the terminal device 500 includes:
  • the receiving unit 510 is configured to receive an indication message sent by the network device, where the indication information is used to indicate that the communication of the first service is switched from a Uu interface-based communication mode to a D2D communication mode;
  • the executing unit 520 is configured to perform communication of the first service by using a D2D communication manner.
  • the executing unit 520 is further configured to:
  • the idle resource When the idle resource exists, the idle resource is used to perform communication of the first service.
  • the indication information further includes a resource for D2D communication
  • the executing unit 520 is further configured to:
  • communication of the first service is performed using the indicated resource indicated by the indication information.
  • the terminal device 500 further includes a sending unit 530:
  • the receiving unit 510 receives an indication message sent by the network device, where the notification message is used to indicate a delay of the first service that is based on the Uu interface, or Whether the delay meets the QoS requirements.
  • the notification message is further used to indicate whether a delay or a delay of another service that is based on the Uu interface meets a QoS requirement.
  • terminal device 500 may correspond to the terminal device in the method 200, and the corresponding functions of the terminal device may be implemented. For brevity, no further details are provided herein.
  • FIG. 6 is a schematic block diagram of a network device 600 in accordance with an embodiment of the present application. As shown in FIG. 6, the network device 600 includes:
  • the determining unit 610 is configured to determine that the first service currently based on the Uu interface communication needs to perform D2D communication;
  • the sending unit 620 is configured to send, to the terminal device, indication information, where the indication information is used to indicate that the communication of the first service is switched from a Uu interface-based communication mode to a D2D communication mode.
  • the indication information further includes a resource for D2D communication.
  • the network device 600 further includes a receiving unit 630, where the receiving unit 630 is configured to receive a communication quality or a communication delay of multiple services sent by the terminal device, where the multiple services are Including the first business,
  • the determining unit 610 is configured to determine that the first service needs to perform D2D communication according to the current communication quality or communication delay of the multiple services received by the receiving unit.
  • the network device 600 may correspond to the network device in the method 200, and the corresponding functions of the network device may be implemented. For brevity, no further details are provided herein.
  • FIG. 7 is a schematic block diagram of a terminal device 700 according to an embodiment of the present application. As shown in FIG. 7, the terminal device 600 includes:
  • a determining unit 710 configured to determine a data amount of data to be sent in a current D2D communication mode
  • the sending unit 720 is configured to report the amount of data to the network device.
  • the receiving unit 730 is configured to receive, by the network device, a resource allocation message.
  • the performing unit 740 is configured to: when the receiving unit receives the resource allocation message, use the resource indicated by the resource allocation message to perform D2D communication for the data to be sent, where the resource allocation message is used by a resource for performing D2D communication allocated to the to-be-sent data; performing D2D communication by using an idle resource in a resource pool when the receiving unit does not receive the resource allocation message, wherein the resource pool includes Resources for D2D communication.
  • the executing unit 740 is further configured to:
  • the D2D communication is performed using the idle resource in the resource pool.
  • the terminal device abandons the use of the idle resource to perform the first service. Communicating, and using the resource indicated by the resource allocation message, performing communication of the first service by using a terminal direct connection D2D communication mode.
  • the receiving unit 730 is further configured to:
  • terminal device 700 may correspond to the terminal device in the method 300, and the corresponding functions of the terminal device may be implemented. For brevity, no further details are provided herein.
  • FIG. 8 is a schematic block diagram of a communication device 800 in accordance with an embodiment of the present application.
  • the communication device 800 includes a processor 810, a memory 820 and a transceiver 830.
  • the communication device further includes a bus system 840 for interconnecting the processor 810, the memory 820, and the transceiver. 830.
  • the memory 820 is used to store instructions
  • the processor 810 is used to call instructions stored in the memory 820 to perform corresponding operations.
  • the communication device 800 shown in FIG. 8 may perform the corresponding operations of the terminal device mentioned in the method embodiment 100, or may perform the corresponding operations of the terminal device mentioned in the method embodiment 200, or may implement the method implementation.
  • the corresponding operation of the network device mentioned in the example 200, or the corresponding operation of the terminal device mentioned in the method embodiment 300 can be performed.
  • the processor 810 calls the instructions stored in the memory 820 to perform the following operations:
  • the radio link fails
  • the communication of the first service is performed by using a terminal directly connected to the D2D communication mode.
  • the processor 810 invokes an instruction stored in the memory 820, and performs the following operations:
  • Determining the delay of the communication of the first service based on the Uu interface cannot satisfy the quality of service QoS requirement of the first service.
  • the processor 810 calls the instructions stored in the memory 820 to perform the following operations:
  • transceiver 830 uses the transceiver 830 to monitor whether there is an idle resource in the resource pool for D2D communication;
  • the idle resource When the idle resource exists, the idle resource is used to perform communication of the first service.
  • the processor 810 calls the instructions stored in the memory 820 to perform the following operations:
  • the processor 810 invokes an instruction stored in the memory 820, and performs the following operations:
  • the terminal device uses the resource configured by the network device for the terminal device, and performs communication of the first service by using a terminal directly connected to the D2D communication mode.
  • the processor 810 calls the instructions stored in the memory 820 to perform the following operations:
  • the transceiver 830 After performing the communication of the first service by using the idle resource in the resource pool for D2D communication, the transceiver 830 receives the second message, and discards the communication using the idle resource to perform the first service. And using the network device to configure the resource for the terminal device, and performing communication of the first service by using a terminal directly connected to the D2D communication mode.
  • the processor 810 calls the instructions stored in the memory 820 to perform the following operations:
  • the idle communication is used to perform the communication of the first service, and the network is adopted.
  • the device configures the resource for the terminal device, and performs communication of the first service by using a terminal directly connected to the D2D communication mode.
  • the processor 810 calls the instructions stored in the memory 820 to perform the following operations:
  • transceiver 830 uses the transceiver 830 to report the amount of data to be sent to the network device;
  • the transceiver 830 receives the second message sent by the network device according to the data volume.
  • the processor 810 calls the instructions stored in the memory 820 to perform the following operations:
  • the processor 810 calls the instructions stored in the memory 820 to perform the following operations:
  • the transceiver 830 Receiving, by the transceiver 830, an indication message sent by the network device, where the indication information is used to indicate that the communication of the first service is switched from a Uu interface-based communication mode to a D2D communication mode;
  • the communication of the first service is performed using a D2D communication method.
  • the processor 810 calls the instructions stored in the memory 820 to perform the following operations:
  • the idle resource When the idle resource exists, the idle resource is used to perform communication of the first service.
  • the indication information further includes a resource for D2D communication
  • the processor 810 calls the instructions stored in the memory 820 to perform the following operations:
  • communication of the first service is performed using the indicated resource indicated by the indication information.
  • the processor 810 calls the instructions stored in the memory 820 to perform the following operations:
  • the notification message is sent by the transceiver 830 to the network device, where the notification message is used to indicate whether the delay or delay of the first service based on the Uu interface meets the QoS requirement.
  • the notification message is further used to indicate whether a delay or a delay of another service that is based on the Uu interface meets a QoS requirement.
  • the processor 810 calls the instructions stored in the memory 820 to perform the following operations:
  • the indication information is sent to the terminal device by the transceiver 830, and the indication information is used to indicate that the communication of the first service is switched from the Uu interface-based communication mode to the D2D communication mode.
  • the indication information further includes a resource for D2D communication.
  • the processor 810 calls the instructions stored in the memory 820 to perform the following operations:
  • the processor 810 calls the instructions stored in the memory 820 to perform the following operations:
  • the network device When receiving, by the transceiver 830, the network device sends a resource allocation message, using the resource indicated by the resource allocation message, performing D2D communication for the to-be-sent data, where the resource allocation message is used to indicate that the a resource for performing D2D communication that transmits data distribution;
  • D2D communication is performed using idle resources in the resource pool, wherein the resource pool includes resources that can be used for D2D communication.
  • the processor 810 calls the instructions stored in the memory 820 to perform the following operations:
  • the D2D communication is performed using the idle resource in the resource pool.
  • the idle resource is used to perform the communication of the first service. And performing the communication of the first service by using the terminal directly connected to the D2D communication mode by using the resource indicated by the resource allocation message.
  • the processor 810 calls the instructions stored in the memory 820 to perform the following operations:
  • the resource allocation message sent by the network device according to the data volume is received by the transceiver 830 by using the scrambling code sequence number.
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • Another point that is shown or discussed between each other The coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • 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, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product.
  • the technical solution of the present application which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including
  • the instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present application.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

Abstract

本申请实施例提供一种通信方法、终端设备和网络设备和存储介质，可以降低时延，提升通信质量。该方法包括：终端设备确定当前基于Uu接口进行的第一业务的通信不能满足所述第一业务的通信需求；或，终端设备确定当前基于Uu接口进行第一业务的通信时，出现无线链路失败；所述终端设备使用终端直连D2D通信方式执行所述第一业务的通信。

Description

通信方法、终端设备和网络设备 技术领域
本申请涉及通信领域，并且更具体地，涉及一种通信方法、终端设备和网络设备。
背景技术
在目前的蜂窝网络通信过程中，可以通过Uu接口进行通信，也即终端设备之间通过基站的终端进行通信，但是此种通信方式的时延较长，通信质量不佳，使得用户体验较差。
发明内容
本申请实施例提供一种通信方法、终端设备、网络设备和存储介质，可以降低时延，提升通信质量。
第一方面，提供了一种通信方法，包括：
终端设备确定当前基于Uu接口进行的第一业务的通信不能满足所述第一业务的通信需求；或，终端设备确定当前基于Uu接口进行第一业务的通信时，出现无线链路失败；
所述终端设备使用终端直连D2D通信方式执行所述第一业务的通信。
结合第一方面，在第一方面的第一种可能的实现方式中，所述终端设备确定当前基于Uu接口进行的第一业务的通信不能满足所述第一业务的通信需求，包括：
所述终端设备确定基于Uu接口进行的第一业务的通信的时延不能满足所述第一业务的服务质量QoS要求。
结合第一方面或上述任一种可能的实现方式中，在第一方面的第二种可能的实现方式中，所述终端设备使用D2D通信方式执行所述第一业务的通信，包括：
所述终端设备监听用于D2D通信的资源池是否存在空闲资源；
在存在所述空闲资源时，采用所述空闲资源执行所述第一业务的通信。
结合第一方面或上述任一种可能的实现方式中，在第一方面的第三种可能的实现方式中，所述终端设备监听用于D2D通信的资源池是否存在空闲 资源之前，所述方法还包括：
通过所述网络设备发送的下行广播信道，确定所述资源池的信息。
结合第一方面或上述任一种可能的实现方式中，在第一方面的第四种可能的实现方式中，在所述终端设备确定当前基于Uu接口进行的第一业务的通信不能满足所述第一业务的通信需求时，所述方法还包括：
所述终端设备向网络设备发送第一消息，所述第一消息用于指示基于Uu接口进行的第一业务的通信不能满足所述第一业务的通信需求；
所述终端设备接收所述网络设备发送的第二消息，所述第二消息用于指示为所述终端设备配置的采用D2D模式执行所述第一业务的通信的资源；
所述终端设备使用终端直连D2D通信方式执行所述第一业务的通信，包括：所述终端设备采用所述网络设备为所述终端设备配置的所述资源，使用终端直连D2D通信方式执行所述第一业务的通信。
结合第一方面或上述任一种可能的实现方式中，在第一方面的第五种可能的实现方式中，所述终端设备使用终端直连D2D通信方式执行所述第一业务的通信，包括：
若所述终端设备在采用用于D2D通信的资源池中的空闲资源执行所述第一业务的通信之后，接收到所述第二消息，则所述终端设备放弃采用所述空闲资源执行所述第一业务的通信，并采用所述网络设备为终端设备配置的所述资源，使用终端直连D2D通信方式执行所述第一业务的通信。
结合第一方面或上述任一种可能的实现方式中，在第一方面的第六种可能的实现方式中，所述终端设备使用终端直连D2D通信方式执行所述第一业务的通信，包括：
若在第一定时器内未接收到所述第二消息，使用用于D2D通信的资源池中的空闲资源执行所述第一业务的通信；
若在所述第一定时器到时后启动的第二定时器内接收到所述第二消息，则所述终端设备放弃采用所述空闲资源执行所述第一业务的通信，并采用所述网络设备为终端设备配置的所述资源，使用终端直连D2D通信方式执行所述第一业务的通信。
结合第一方面或上述任一种可能的实现方式中，在第一方面的第七种可能的实现方式中，所述终端设备接收所述网络设备发送的第二消息之前，所述方法还包括：
所述终端设备接收网络设备发送的扰码序号；
所述终端设备向网络设备上报待发送数据的数据量；
所述终端设备接收所述网络设备发送的第二消息，包括：利用所述扰码序号，接收网络设备根据所述数据量发送的所述第二消息。
结合第一方面或上述任一种可能的实现方式中，在第一方面的第八种可能的实现方式中，所述终端设备使用终端直连D2D通信方式执行所述第一业务的通信，包括：
采用所述网络设备为所述终端设备预配置的资源，使用D2D通信方式执行所述第一业务的通信。
第二方面，提供了一种通信方法，包括：
终端设备接收网络设备发送的指示消息，所述指示信息用于指示将所述第一业务的通信从基于Uu接口的通信方式切换到D2D通信方式；
所述终端设备使用D2D通信方式，执行所述第一业务的通信。
结合第二方面，在第二方面的第一种可能的实现方式中，所述终端设备使用D2D通信方式，执行所述第一业务的通信，包括：
所述终端设备监听用于D2D通信的资源池是否存在空闲资源；
在存在所述空闲资源时，采用所述空闲资源执行所述第一业务的通信。
结合第二方面或其上述任一种可能的实现方式，在第二方面的第二种可能的实现方式中，所述指示信息还进一步包括用于D2D通信的资源；
所述终端设备使用D2D通信方式，执行所述第一业务的通信，包括：
所述终端设备使用所述D2D通信方式，利用所述指示信息指示的所示资源，执行所述第一业务的通信。
结合第二方面或其上述任一种可能的实现方式，在第二方面的第三种可能的实现方式中，终端设备接收网络设备发送的指示消息之前，所述方法还包括：
所述终端设备向所述网络设备发送通知消息，所述通知消息用于指示基于所述Uu接口进行通信的所述第一业务的延时或延时是否满足QoS要求。
结合第二方面或其上述任一种可能的实现方式，在第二方面的第四种可能的实现方式中，所述通知消息还用于指示基于所述Uu接口进行通信的其他业务的延时或延时是否满足QoS要求。
第三方面，提供了一种通信方法，包括：
网络设备确定当前基于Uu接口通信的第一业务需要进行D2D通信；
向终端设备发送指示信息，所述指示信息用于指示将所述第一业务的通信从基于Uu接口的通信方式切换到D2D通信方式。
结合第三方面，在第三方面的第一种可能的实现方式中，所述指示信息还进一步包括用于D2D通信的资源。
结合第三方面或其第一种可能的实现方式，在第三方面的第二种可能的实现方式中，所述方法还包括：
接收终端设备发送的多个业务的通信质量或通信延时，其中，所述多个业务包括第一业务，
根据所述多个业务的当前通信质量或通信延时，确定第一业务需要进行D2D通信。
第四方面，提供了一种通信方法，包括：
终端设备确定在当前D2D通信方式下，待发送数据的数据量；
所述终端设备向所述网络设备上报所述数据量；
在接收到所述网络设备发送资源分配消息时，利用所述资源分配消息指示的资源，执行针对所述待发送数据的D2D通信，所述资源分配消息用于指示为所述待发送数据分配的进行D2D通信的资源；
在未接收到所述资源分配消息时，利用资源池中的空闲资源执行D2D通信，其中，所述资源池包括能够用于D2D通信的资源。
结合第四方面，在第四方面的第一种可能的实现方式中，其特征在于，
利用资源池中的空闲资源执行D2D通信，包括：若在第一定时器到达时，未接收到所述资源分配消息时，利用所述资源池中的空闲资源执行D2D通信；
利用所述资源分配消息指示的资源，执行针对所述待发送数据的D2D通信，包括：
若在所述第一定时器到时后启动的第二定时器内接收到所述网络设备分配的所述资源分配消息，则所述终端设备放弃采用所述空闲资源执行所述第一业务的通信，并采用所述资源分配消息指示的所述资源，使用终端直连D2D通信方式执行所述第一业务的通信。
结合第四方面或其第一种可能的实现方式，在第四方面的第二种可能的实现方式中，所述方法还包括：
所述终端设备接收网络设备发送的扰码序号；
利用所述扰码序号，接收网络设备根据所述数据量发送的所述资源分配消息。
第五方面，提供了一种终端设备，用于执行上述第一方面或第一方面的任意可能的实现方式中的方法。具体地，该终端设备包括用于执行上述第一方面或第一方面的任意可能的实现方式中的方法的单元。
第六方面，提供了一种终端设备，用于执行上述第二方面或第二方面的任意可能的实现方式中的方法。具体地，该终端设备包括用于执行上述第二方面或第二方面的任意可能的实现方式中的方法的单元。
第七方面，提供了一种网络设备，用于执行上述第三方面或第三方面的任意可能的实现方式中的方法。具体地，该网络设备包括用于执行上述第三方面或第三方面的任意可能的实现方式中的方法的单元。
第八方面，提供了一种终端设备，用于执行上述第四方面或第四方面的任意可能的实现方式中的方法。具体地，该终端设备包括用于执行上述第四方面或第四方面的任意可能的实现方式中的方法的单元。
第九方面，提供了一种终端设备，包括：存储器和处理器，该存储器用于存储指令，该处理器用于执行该存储器存储的指令，并且当该处理器执行该存储器存储的指令时，该执行使得该处理器执行第一方面或第一方面的任意可能的实现方式中的方法。
第十方面，提供了一种终端设备，包括：存储器和处理器，该存储器用于存储指令，该处理器用于执行该存储器存储的指令，并且当该处理器执行该存储器存储的指令时，该执行使得该处理器执行第二方面或第二方面的任意可能的实现方式中的方法。
第十一方面，提供了一种网络设备，包括：存储器和处理器，该存储器用于存储指令，该处理器用于执行该存储器存储的指令，并且当该处理器执行该存储器存储的指令时，该执行使得该处理器执行第三方面或第三方面的任意可能的实现方式中的方法。
第十二方面，提供了一种终端设备，包括：存储器和处理器，该存储器用于存储指令，该处理器用于执行该存储器存储的指令，并且当该处理器执行该存储器存储的指令时，该执行使得该处理器执行第四方面或第四方面的任意可能的实现方式中的方法。
第十三方面，提供了一种计算机存储介质，该计算机存储介质中存储有程序代码，该程序代码用于指示执行上述第一方面或第一方面的任意可能的实现方式中的方法。
第十四方面，提供了一种计算机存储介质，该计算机存储介质中存储有程序代码，该程序代码用于指示执行上述第二方面或第二方面的任意可能的实现方式中的方法。
第十五方面，提供了一种计算机存储介质，该计算机存储介质中存储有程序代码，该程序代码用于指示执行上述第三方面或第三方面的任意可能的实现方式中的方法。
第十六方面，提供了一种计算机存储介质，该计算机存储介质中存储有程序代码，该程序代码用于指示执行上述第四方面或第四方面的任意可能的实现方式中的方法。
附图说明
为了更清楚地说明本申请实施例的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是根据实施例的通信方法的示意性流程图。
图2是根据实施例的通信方法的示意性流程图。
图3是根据实施例的通信方法的示意性流程图。
图4是根据实施例的终端设备的示意性框图。
图5是根据实施例的终端设备的示意性框图。
图6是根据实施例的网络设备的示意性框图。
图7是根据实施例的终端设备的示意性框图。
图8是根据实施例的通信设备的示意性框图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创 造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
应理解，本发明的技术方案可以应用于各种通信系统，例如：全球移动通讯(Global System of Mobile communication，GSM)系统、码分多址(Code Division Multiple Access，CDMA)系统、宽带码分多址(Wideband Code Division Multiple Access，WCDMA)系统、通用分组无线业务(General Packet Radio Service，GPRS)、长期演进(Long Term Evolution，LTE)系统、先进的长期演进(Advanced long term evolution，LTE-A)系统、通用移动通信系统(Universal Mobile Telecommunication System，UMTS)、5G等。
在一些实施例中，终端直连(Device to Device，D2D)通信可以指车对车(Vehicle to Vehicle，V2V)通信，或V2X通信。在V2X通信中，X可以泛指任何具有无线接收和发送能力的设备，例如但不限于慢速移动的无线装置，快速移动的车载设备，或是具有无线发射接收能力的网络控制节点。当然，本申请实施例可以不用于D2D通信，而用于终端与蜂窝网络的通信。
本发明实施例中，终端设备也可以称为接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。接入终端可以是蜂窝电话、无绳电话、SIP(Session Initiation Protocol，会话启动协议)电话、WLL(Wireless Local Loop，无线本地环路)站、PDA(Personal Digital Assistant，个人数字处理)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备以及未来5G网络中的终端设备。网络设备可用于与移动设备通信，网络设备可以是GSM(Global System of Mobile communication，全球移动通讯)或CDMA(Code Division Multiple Access，码分多址)中的BTS(Base Transceiver Station，基站)，也可以是WCDMA(Wideband Code Division Multiple Access，宽带码分多址)中的NB(NodeB，基站)，还可以是LTE(Long Term Evolution，长期演进)中的eNB或eNodeB(Evolutional Node B，演进型基站)，或者中继站或接入点，或者车载设备、可穿戴设备以及未来5G网络中的网络设备。
在本申请实施例中，终端与网络设备之间的通信接口可以称为Uu接口，终端设备与终端设备之间的直连接口可以称为PC5接口。
为了便于理解，以下将对本申请实施例提到的时延获取方法进行详细说明。
在步骤A中，发送端在发送包中加入时间指示信息，其中，该时间指示信息用于接收端获取该发送端到该接收端的时延。
可选地，该发送包为分组数据汇聚协议(Packet Data Convergence Protocol，PDCP)层包，无线链路控制(Radio Link Control，RLC)层包或媒体接入控制(Media Access Control，MAC)层包。
可选地，该发送包为数据包或为专用时延探测包。
在步骤B中，该发送端向该接收端发送该发送包。
可选地，发送端确定需要获取从该发送端到该接收端的时延对应业务的服务质量(Quality of Service，QoS)，按照对应的服务质量QoS，该发送端向该接收端发送该发送包。
在步骤C中，接收端接收发送端发送的发送包，其中，该发送包包括时间指示信息。
其中，接收端在解析时间标识信息时，是在发送端添加时间标识信息的相同层进行，例如，如果发送端在MAC层加入时间标识信息，则接收端在MAC层解析时间标识信息。
在步骤D中，根据该时间指示信息，该接收端确定从该发送端到该接收端的时延。
可选地，在本申请实施例中，发送端可以通过多条路径发送该发送包，接收端接收该发送端通过多个路径发送的该发送包，确定该多个路径中的每个路径的时延。其中，发送包可以在该发送包中包含对应路径的路径信息，或者，发送包经过的中间节点在包中加入路径的路径信息。
可选地，在本申请实施例中，发送端发送的发送包中包括的时间指示信息可以包括该发送端处理该发送包的开始时间点，则接收端可以根据处理该发送包的结束时间点和该开始时间点之差，来确定从发送端到接收端的时延。其中，发送端处理该发送包的开始时间点是指得到该包的时间点或开始生成该包的时间点；接收端处理该发送包的结束时间点可以是指解析完该包的时间点。
可选地，上述开始时间点和结束时间点可以是绝对时间，例如，世界统一时间(Coordinated Universal Time，UTC)、北斗和GPS对应的绝对时间，则可以直接将结束时间点和开始时间点之差作为从发送端到接收端的时延。
上述开始时间点和结束时间点可以不是绝对时间，例如，可以是通信系 统定义的时间，例如，由子帧或时隙表征的时间，则需要根据发送端与接收端的同步时间偏差，以及根据结束时间点和开始时间点之差，来确定从发送端到接收端的时延。
其中，发送端和接收端的同步时间偏差可以根据发送端到接收端的任意两个节点之间的同步时间偏差来计算。其中，中间节点的上一节点与该中间节点不同步时，该节点可以确定与上一节点的同步时间偏差，并在发送包中记录该同步时间偏差。
例如，发送端到接收端需要经过节点1和节点2，则节点1在接收到发送包之后，可以获取发送端与节点1的同步时间偏差，并记录在发送包中；节点2在接收到发送包之后，可以获取节点1与节点2之间的同步时间偏差，并记录在发送包中，其中，节点1和节点2之间的同步时间偏差可以与之前的同步时间偏差累加记录在发送包中，即将节点1和节点2之间的同步时间偏差与之前的同步时间偏差相加，并将记录的同步时间偏差更改为相加后的同步时间偏差，或者，节点1和节点2之间的同步时间偏差可以单独记录在一个信息字段中；接收端在接收到该发送包之后，可以获取节点2与接收端之间的同步时间偏差，并根据发送包的记录获取发送端与节点2的同步时间偏差，从而可以获取发送端与接收端之间的同步时间偏差。
可选地，发送端可以将处理该发送包的处理时延加入到发送包中，中间节点接收到发送包之后，可以将处理时延以及与上一节点之间的传输时延加入到发送包中，其中，中间节点可以将处理时延和传输时延单独记录在发送包中的不同信息字段中；或者，中间节点可以将本节点得到的处理时延和传输时延之和记录在信息字段中，但是不与其他节点记录的时间相累加；或者，中间节点可以将处理时延与其他节点得到处理时延累加记录在一个信息字段中，以及将传输时延与其他节点得到传输时延记录在另一个信息字段中；或者，中间节点将传输时延与处理时延之和与发送包记录的处理时延和传输时延之和相累加，并更新记录。发送端接收到发送包之后，可以根据发送包中的时间指示信息的指示来得到发送端与接收端之间的时延。
为了便于理解，以下以举例几种实现方式方法描述几种时间指示信息的记录方式。
在一种实现方式中，该时间指示信息包括该发送端处理该发送包的处理时延，以及包括从发送端到该接收端之间的任意中间节点处理该发送包的处 理时延，以及包括任意中间节点获取的与上一节点之间的传输时延，其中，不同节点处理该发送包的处理时延承载在该发送包的不同信息字段中，不同节点获取的传输时延承载在该发送包的不同信息字段中，同一节点的处理时延和传输时延承载在该发送包的不同信息字段中。在这种情况下，接收端确定接收端处理该发送包的处理时延以及接收端与该接收端的上一节点的传输时延；根据该发送端处理该发送包的处理时延，任意中间节点处理该发送包的处理时延，任意中间节点获取的与其上一节点的传输时延，接收端处理该发送包的处理时延，接收端与该接收端的上一节点的传输时延五者之和，确定从该发送端到该接收端的时延。
例如，发送端到接收端需要经过节点1和节点2，发送端处理发送包的处理时延(例如1ms)记录在信息字段中，节点1接收到发送包，获取从接收端到节点1的传输时延0.5ms，以及获取处理该发送包的处理时延1ms，分别将0.5ms和1ms记录在不同的信息字段中；节点2接收到发送包，获取从节点1到节点2的传输时延0.6ms，以及获取处理该发送包的处理时延1.1ms，分别将该0.6ms和1.1ms记录在不同的信息字段中；接收端接收该发送包，获取从节点2到接收端的传输时延0.4ms和处理该发送包的处理时延1.2ms，并获取发送包中记录的1ms、1ms、0.5ms、0.6ms、1.1ms，将1ms、1ms、0.5ms、0.6ms、1.1ms、0.4ms和1.2ms相加得到的时间值用于确定从发送端接收端的时延。
在一种实现方式中，该时间指示信息包括该发送端处理该发送包的处理时延，以及包括从发送端到该接收端的任意中间节点处理该发送包的处理时延与其与上一节点之间的传输时延之和；其中，不同节点处理该发送包的处理时延与获取的传输时延的之和承载在该发送包的不同信息字段中。在这种情况下，该接收端确定接收端处理该发送包的处理时延以及接收端与该接收端的上一节点的传输时延；根据该发送端处理该发送包的处理时延，从发送端到该接收端的上一节点的任意节点处理该发送包的处理时延与获取的与上一节点传输时延之和，接收端处理该发送包的处理时延，与接收端与该接收端的上一节点的传输时延四者之和，确定从该发送端到该接收端的时延。
例如，发送端到接收端需要经过节点1和节点2，发送端处理发送包的处理时延(例如1ms)记录在信息字段中，节点1接收到发送包，获取从接收端到节点1的传输时延0.5ms，以及获取处理该发送包的处理时延1ms， 则将1.5ms记录在信息字段中；节点2接收到发送包，获取从节点1到节点2的传输时延0.6ms，以及获取处理该发送包的处理时延1.1ms，将1.7ms记录在与发送端不同的信息字段中；接收端接收该发送包，获取从节点2到接收端的传输时延0.4ms和处理该发送包的处理时延1.2ms，并获取发送包中记录的1ms、1.5ms和1.7ms，将1ms、1.5ms、1.7ms、0.4ms和1.2ms相加得到的时间值用于确定从发送端接收端的时延。
在一种实现方式中，该时间指示信息包括该发送端处理该发送包的处理时延、该发送端到该接收端之间的中间节点处理该发送包的处理时延和任意中间节点获取的与其上一节点的传输时延之和。该接收端确定该接收端处理该发送包的处理时延，以及从该接收端的上一节点到该接收端的传输时延；根据时间指示信息包括的该发送端处理该发送包的处理时延、该发送端到该接收端之间的中间节点处理该发送包的处理时延和任意中间节点获取的与其上一节点的传输时延之和，该接收端处理该发送包的处理时延，与从该接收端的上一节点到该接收端的传输时延三者之和，确定从该发送端到该接收端的时延。
例如，发送端到接收端需要经过节点1和节点2，发送端处理发送包的处理时延(例如1ms)记录在信息字段中，节点1接收到发送包，获取从接收端到节点1的传输时延0.5ms，以及获取处理该发送包的处理时延1ms，则将发送端记录的1ms更新为2.5ms；节点2接收到发送包，获取从节点1到节点2的传输时延0.6ms，以及获取处理该发送包的处理时延1.1ms，则将节点1记录的2.5ms更新为4.2ms；接收端接收该发送包，获取从节点2到接收端的传输时延0.4ms和处理该发送包的处理时延1.2ms，并获取发送包中记录的14.2，将4.2、0.4ms和1.2ms相加得到的时间值用于确定从发送端接收端的时延。
如果各个节点获取的处理时延和/或传输时延不是通过绝对时间来得到的，则还需要获取发送端和接收端的同步时间偏差，其中，发送端和接收端的同步时间偏差可以根据发送端到接收端的任意两个节点之间的同步时间偏差来计算。其中，中间节点的上一节点与该中间节点不同步时，该节点可以确定与上一节点的同步时间偏差，并在发送包中记录该同步时间偏差。
其中，各个节点在发送包中记录与上一节点的同步时间偏差时，可以单独记录，也可以与处理时延和/或传输时延合并的方式记录。
可选地，该发送包还包括时延要求、接收端列表和反馈对象中的至少一种。
其中，在该发送包中包括时延要求时，接收端可以判断时延是否满足时延要求，并向反馈对象反馈从该发送端到该接收端的时延是否满足时延要求。
其中，在该发送包中不包括时延要求时，接收端可以直接向反馈对象从发送端到接收端的时延，或者根据其他方式获取的时延要求(例如，网络设备配置的时延要求)，接收端可以判断时延是否满足时延要求，并向反馈对象反馈从该发送端到该接收端的时延是否满足时延要求。
其中，时延的反馈对象可以是发送端也可以是第三方实体，比如网络设备。
可选地，该发送端接收第三方实体发送的配置信息，该配置信息用于指示该发送端向该接收端发送携带该时间指示信息的该发送包。
可选地，发送端通过Uu接口或终端直连接口向该接收端发送该发送包。
因此，在本申请实施例中，在发送包中加入时间指示信息，可以准确获取发送端到接收端的时延。
图1是根据本申请实施例的通信方法100的示意性流程图。如图1所示，该方法100包括110和120。
在110中，终端设备确定当前基于Uu接口进行的第一业务的通信不能满足该第一业务的通信需求；或，终端设备确定当前基于Uu接口进行第一业务的通信时，出现无线链路失败。
可选地，基于Uu接口进行的业务的通信不能满足该业务的通信需求可以是基于Uu接口进行的该业务的通信的时延不能满足该业务的服务质量(Quality of Service，QoS)要求。
在120中，该终端设备使用D2D通信方式，执行该第一业务的通信。
可选地，在终端设备确定当前基于Uu接口进行的第一业务的通信不能满足该第一业务的通信需求后，或，在确定当前基于Uu接口进行第一业务的通信发生无线链路失败后，该终端设备确定用于D2D通信的资源池中的空闲资源；采用该空闲资源执行该第一业务的通信。
其中，终端设备可以一直监听资源池中的空闲资源，一旦确定需要将第一业务切换到D2D通信模式下，则可以直接采用监听到的空闲资源，执行 针对第一业务的D2D通信。或者，终端设备可以在确定需要将第一业务切换到D2D通信模式下，才监听空闲资源，并采用监听到的空闲资源执行D2D通信。可选地，在采用空闲资源执行针对第一业务的D2D通信之后，可以向网络设备发送通知消息，汇报已针对第一业务利用空闲资源切换到D2D通信模式。
其中，终端设备可以通过网络设备发送的下行广播信道，来确定资源池的信息。
可选地，在该终端设备确定当前基于Uu接口进行的第一业务的通信不能满足该第一业务的通信需求时，该终端设备向网络设备发送第一消息，该第一消息用于指示基于Uu接口进行的第一业务的通信不能满足该第一业务的通信需求；终端设备接收该网络设备发送的第二消息，该第二消息用于指示为该终端设备配置的采用D2D模式执行该第一业务的通信的资源；终端设备采用该网络设备为该终端设备配置的该资源，使用D2D通信方式执行该第一业务的通信。
其中，上述第一消息可以直接指示当前基于Uu接口进行的第一业务的通信不能满足该第一业务的通信需求。例如，可以在第一消息中直接携带“满足”或“不满足”对应的信息，例如，0代表满足，1代表不满足。
或者，上述第一消息可以间接指示当前基于Uu接口进行的第一业务的通信不能满足该第一业务的通信需求。例如，可以在第一消息中携带Uu接口的通信时延以及携带对应的QoS需求，当然，即可以携带时延是否满足QoS的结果，还可以同时携带时延和对应的QoS需求。
其中，终端设备在发送该第一消息之后，可以直接监控资源池中的空闲资源，若监控到空闲资源，可以采用空闲资源进行通信，或者，终端设备也可以在发送该第一消息之后，不执行对资源池中的空闲资源的监控，等待第二消息，并在接收到第二消息之后，按照第二消息消息中分配的资源，执行针对第一业务的D2D通信。
可选地，若终端设备在采用资源池中的空闲资源执行该第一业务的通信之后，接收到该第二消息，则该终端设备放弃采用该空闲资源执行该第一业务的通信，并采用网络设备为终端设备配置的该资源，使用D2D通信方式执行该第一业务的通信。
可选地，终端设备在发送第一消息之后，可以启动第一定时器，若在第 一定时器内未接收到该第二消息，使用用于D2D通信的资源池中的空闲资源执行该第一业务的通信；终端设备还可以在第一定时器结束之后，启动第二定时器，若在该第二定时器内接收到该第二消息，则该终端设备放弃采用该空闲资源执行该第一业务的通信，并采用该网络设备为终端设备配置的该资源，使用终端直连D2D通信方式执行该第一业务的通信。
当然，在本申请实施例中，终端设备也可以在第一定时器内结束之后不启动第二定时器，而是直接监控资源池中的空闲资源，并在监控到空闲资源后，采用空闲资源执行针对第一业务的D2D通信。
可选地，终端设备接收网络设备发送的扰码序号(具体可以为无线网络临时标识(Radio Network Tempory Identity，RNTI))，该终端设备向网络设备上报待发送数据的数据量；利用该扰码序号，接收网络设备根据该数据量发送的该第二消息，并利用第二消息执行的资源执行针对第一业务的D2D通信。此处提到的RNTI可以是SL-RNTI(副链路RNTI，sidelink-RNTI)。
具体地，当基站接收到终端发送的用于业务的通信不能满足通信需求的消息后，将先为终端分配SL_RNTI,当有新数据到达时，终端可以通过缓存状态报告(buffer status report，BSR)向基站汇报自己将要发送的数据量，然后终端运用SL_RNTI在PDCCH(下行控制信道)上收听基站分配的D2D_grant(其中，D2D_为终端具体分配资源的调度信息)。当终端在第一定时器内未检测到基站发出的D2D_grant(这可能是由于终端自己的错误检测造成的),终端可以利用资源池的空闲资源发送。如果第一定时器结束之后启动的第二定时器内，终端又收到了D2D_grant,终端可以忽略此调度信息，继续使用资源池中的空闲资源进行D2D通信；或者终端也可以使用此调度信息中指示的资源进行D2D通信。
其中，在第一定时器或第二定时器接收第二消息，均可以采用上述扰码序号监听基站发送的D2D_grant。
可选地，该网络设备采用该网络设备为该第一业务预配置的资源，使用D2D通信方式执行该第一业务的通信。
其中，在第一业务的拥有很高的优先级或QoS业务要求，即不能允许太长的业务切换延时，则网络设备可以预先为该终端设备的第一业务预配置资源，在终端设备确定该第一业务的通信的延时不能满足通信质量要求，或出 现无线链路失败时，可以执行针对该第一业务的D2D通信，
例如，终端正在Uu接口上进行的业务可能拥有很高的优先级或QoS要求，基站可以预先为该业务预留并且配置基于D2D通信的资源，一旦终端发现这些业务中的某一业务的延时超出要求，终端可以直接将该业务切换到PC5接口通信模式下，利用预分配的资源执行D2D通信，而无需预先向基站汇报。之后，终端可以向基站汇报，该业务已经基于为该业务预配置的资源，通过D2D通信方式进行通信。
因此，在本申请实施例中，在当前基于Uu接口进行的第一业务的通信不能满足该第一业务的通信需求时，或，当前基于Uu接口进行第一业务的通信时，出现无线链路失败时，将基于Uu接口的通信方式切换到基于D2D通信的方式，执行第一业务的通信，可以降低时延，提升通信质量。
图2是根据本申请实施例的通信方法200的示意性流程图。如图2所示，该方法包括210、220、230和240。
在210中，网络设备确定当前基于Uu接口通信的第一业务需要进行D2D通信。
可选地，终端设备在确定当前基于Uu接口进行的第一业务的通信不能满足该第一业务的通信需求(例如，时延不能满足QoS要求)，可以向网络设备发送通知消息，该通知消息用于指示基于所述Uu接口进行通信的所述第一业务的延时或延时是否满足QoS要求，则网络设备可以基于该通知消息当前基于Uu接口通信的第一业务需要进行D2D通信。
可选地，终端设备可以向网络设备发送当前基于Uu接口执行的所有业务的延时或延时是否满足QoS要求，则网络设备可以将所有时延不满足要求的业务确定为待切换到D2D通信模式下的业务，或者可选地，将部分时延满足要求的业务确定为待切换到D2D通信模式下的业务，比如，网络设备负载较高时，网络设备可以将部分时延较高但仍然满足要求的业务切换到D2D通信模式下。
在220中，网络设备向终端设备发送指示信息，所述指示信息用于指示将所述第一业务的通信从基于Uu接口的通信方式切换到D2D通信方式。
在230中，终端设备接收网络设备发送的指示消息。
在240中，终端设备使用D2D通信方式，执行所述第一业务的通信。
可选地，该指示信息不携带为该终端的第一业务分配的资源，则终端可 以监听用于D2D通信的资源池是否存在空闲资源，在存在所述空闲资源时，采用所述空闲资源执行所述第一业务的D2D通信。
或者，该指示信息携带用于执行针对所述第一业务的D2D通信的资源，所述终端设备使用所述D2D通信方式，利用所述指示信息指示的资源，执行所述第一业务的通信。
因此，在本申请实施例中，终端设备可以按照网络设备的指示，将基于Uu接口的通信方式切换到基于D2D通信的方式，执行业务的通信，可以实现灵活的通信方式，并从而可以降低时延，提升通信质量。
图3是根据本申请实施例的通信方法300的示意性流程图。如图3所示，该方法包括310、320、330、340和350。
在310中，终端设备确定在当前D2D通信方式下，待发送数据的数据量。
在320中，所述终端设备向所述网络设备上报所述数据量。
在330中，网络设备根据该数据量为终端分配用于D2D通信的资源，并将该资源信息携带在资源分配消息中发送给终端设备。
在340中，在终端设备接收到所述网络设备发送资源分配消息时，利用所述资源分配消息指示的资源，执行针对所述待发送数据的D2D通信，所述资源分配消息用于指示为所述待发送数据分配的进行D2D通信的资源。
在350中，在未接收到所述资源分配消息时，利用资源池中的空闲资源执行D2D通信，其中，所述资源池包括能够用于D2D通信的资源。
可选地，终端设备在向网络设备上报数据量之后，可以启动第一定时器，若在第一定时器内未接收到资源分配消息，使用用于D2D通信的资源池中的空闲资源发送该待发送数据；终端设备还可以在第一定时器结束之后，启动第二定时器，若在该第二定时器内接收到资源分配消息，则该终端设备放弃采用该空闲资源，并采用该网络设备为终端设备配置的该资源，使用终端直连D2D通信方式执行该发送数据的发送。
当然，在本申请实施例中，终端设备也可以在第一定时器内结束之后不启动第二定时器，而是直接监控资源池中的空闲资源，并在监控到空闲资源后，采用空闲资源发送待发送的数据。
可选地，终端设备接收网络设备发送的扰码序号(具体可以为SL_RNTI)； 该终端设备向网络设备上报待发送数据的数据量；利用该扰码序号，接收网络设备根据该数据量发送的资源分配消息，并利用该资源分配消息指示的资源发送待发送的数据。
具体地，终端工作在D2D模式下，当有新数据到达时，终端可以通过缓存状态报告(buffer status report，BSR)向基站汇报自己将要发送的数据量，然后终端运用SL_RNTI(SL_RNTI可以在缓存状态报告发送之前，网络设备为终端分配的)在PDCCH(下行控制信道)上收听基站分配的D2D_grant(其中，D2D_为终端具体分配资源的调度信息)。当终端在第一定时器内未检测到基站发出的D2D_grant(这可能是由于终端自己的错误检测造成的),终端可以利用资源池的空闲资源发送。如果第一定时器结束之后启动的第二定时器，终端又收到了D2D_grant,终端可以忽略此调度信息，继续使用资源池中的空闲资源进行D2D通信；或者终端也可以使用此调度信息中指示的资源进行D2D通信。
其中，在第一定时器或第二定时器接收第二消息，均可以采用上述扰码序号。
因此，在本申请实施例中，在D2D通信下，终端设备向网络设备上报待发送数据量，并由网络设备根据该数据量为终端设备分配资源执行待发送数据的发送，可以避免资源浪费，并在未接收到网络设备分配的资源时，使用资源池中的空闲资源进行发送，从而可以实现数据的及时发送，并从而可以降低时延，提升通信质量。
图4是根据本申请实施例的终端设备400的示意性框图。如图4所示，该终端设备400包括：
确定单元410，用于确定当前基于Uu接口进行的第一业务的通信不能满足所述第一业务的通信需求；或，确定当前基于Uu接口进行第一业务的通信时，出现无线链路失败；
执行单元420，用于使用终端直连D2D通信方式执行所述第一业务的通信。
可选地，所述确定单元410进一步用于：
确定基于Uu接口进行的第一业务的通信的时延不能满足所述第一业务的服务质量QoS要求。
可选地，所述执行单元420具体用于：
监听用于D2D通信的资源池是否存在空闲资源；
在存在所述空闲资源时，采用所述空闲资源执行所述第一业务的通信。
可选地，所述执行单元420进一步用于：
通过所述网络设备发送的下行广播信道，确定所述资源池的信息。
可选地，在所述确定单元410确定当前基于Uu接口进行的第一业务的通信不能满足所述第一业务的通信需求时，所述执行单元420进一步用于：
向网络设备发送第一消息，所述第一消息用于指示基于Uu接口进行的第一业务的通信不能满足所述第一业务的通信需求；
接收所述网络设备发送的第二消息，所述第二消息用于指示为所述终端设备配置的采用D2D模式执行所述第一业务的通信的资源；
采用所述网络设备为所述终端设备配置的所述资源，使用终端直连D2D通信方式执行所述第一业务的通信。
可选地，所述执行单元420进一步用于：
若所述执行单元在采用用于D2D通信的资源池中的空闲资源执行所述第一业务的通信之后，接收到所述第二消息，放弃采用所述空闲资源执行所述第一业务的通信，并采用所述网络设备为终端设备配置的所述资源，使用终端直连D2D通信方式执行所述第一业务的通信。
可选地，所述执行单元420进一步用于：
若在第一定时器内未接收到所述第二消息，使用用于D2D通信的资源池中的空闲资源执行所述第一业务的通信；
若在所述第一定时器到时后启动的第二定时器内接收到所述第二消息，放弃采用所述空闲资源执行所述第一业务的通信，并采用所述网络设备为终端设备配置的所述资源，使用终端直连D2D通信方式执行所述第一业务的通信。
可选地，所述执行单元420进一步用于：
接收网络设备发送的扰码序号；
向网络设备上报待发送数据的数据量；
利用所述扰码序号，接收网络设备根据所述数据量发送的所述第二消息。
可选地，所述执行单元420进一步用于：
采用所述网络设备为所述终端设备预配置的资源，使用D2D通信方式 执行所述第一业务的通信。
应理解，该终端设备400可以对应于方法100中的终端设备，可以实现该终端设备的相应功能，为了简洁，在此不再赘述。
图5是根据本申请实施例的终端设备500的示意性框图。如图5所示，该终端设备500包括：
接收单元510，用于接收网络设备发送的指示消息，所述指示信息用于指示将所述第一业务的通信从基于Uu接口的通信方式切换到D2D通信方式；
执行单元520，用于使用D2D通信方式，执行所述第一业务的通信。
可选地，所述执行单元520进一步用于：
监听用于D2D通信的资源池是否存在空闲资源；
在存在所述空闲资源时，采用所述空闲资源执行所述第一业务的通信。
可选地，所述指示信息还进一步包括用于D2D通信的资源；
所述执行单元520进一步用于：
使用所述D2D通信方式，利用所述指示信息指示的所示资源，执行所述第一业务的通信。
可选地，如图5所示，该终端设备500还包括发送单元530：
用于在所述接收单元510接收网络设备发送的指示消息之前，向所述网络设备发送通知消息，所述通知消息用于指示基于所述Uu接口进行通信的所述第一业务的延时或延时是否满足QoS要求。
可选地，所述通知消息还用于指示基于所述Uu接口进行通信的其他业务的延时或延时是否满足QoS要求。
应理解，该终端设备500可以对应于方法200中的终端设备，可以实现该终端设备的相应功能，为了简洁，在此不再赘述。
图6是根据本申请实施例的网络设备600的示意性框图。如图6所示，该网络设备600包括：
确定单元610，用于确定当前基于Uu接口通信的第一业务需要进行D2D通信；
发送单元620，用于向终端设备发送指示信息，所述指示信息用于指示将所述第一业务的通信从基于Uu接口的通信方式切换到D2D通信方式。
可选地，所述指示信息还进一步包括用于D2D通信的资源。
可选地，如图6所示，该网络设备600还包括接收单元630，所述接收单元630用于接收终端设备发送的多个业务的通信质量或通信延时，其中，所述多个业务包括第一业务，
所述确定单元610，用于根据所述接收单元接收的所述多个业务的当前通信质量或通信延时，确定第一业务需要进行D2D通信。
应理解，该网络设备600可以对应于方法200中的网络设备，可以实现该网络设备的相应功能，为了简洁，在此不再赘述。
图7是根据本申请实施例的终端设备700的示意性框图。如图7所示，该终端设备600包括：
确定单元710，用于确定在当前D2D通信方式下，待发送数据的数据量；
发送单元720，用于向所述网络设备上报所述数据量；
接收单元730，用于接收所述网络设备发送资源分配消息；
执行单元740，用于在所述接收单元接收到所述网络设备发送资源分配消息时，利用所述资源分配消息指示的资源，执行针对所述待发送数据的D2D通信，所述资源分配消息用于指示为所述待发送数据分配的进行D2D通信的资源；在所述接收单元未接收到所述资源分配消息时，利用资源池中的空闲资源执行D2D通信，其中，所述资源池包括能够用于D2D通信的资源。
可选地，所述执行单元740进一步用于：
若在第一定时器到达时，未接收到所述资源分配消息时，利用所述资源池中的空闲资源执行D2D通信。
若在所述第一定时器到时后启动的第二定时器内接收到所述网络设备分配的所述资源分配消息，则所述终端设备放弃采用所述空闲资源执行所述第一业务的通信，并采用所述资源分配消息指示的所述资源，使用终端直连D2D通信方式执行所述第一业务的通信。
可选地，所述接收单元730进一步用于：
接收网络设备发送的扰码序号；
利用所述扰码序号，接收网络设备根据所述数据量发送的所述资源分配消息。
应理解，该终端设备700可以对应于方法300中的终端设备，可以实现该终端设备的相应功能，为了简洁，在此不再赘述。
图8是根据本申请实施例的通信设备800的示意性框图。如图8所示，该通信设备800包括处理器810，存储器820和收发器830，可选地，该通信设备还包括总线系统840，该总线系统用于互连处理器810，存储器820和收发器830。存储器820用于存储指令，处理器810用于调用存储器820中存储的指令执行相应操作。
可选地，图8所示的通信设备800可以执行方法实施例100提到的终端设备的相应操作，或者，可以执行方法实施例200提到的终端设备的相应操作，或者，可以执行方法实施例200提到的网络设备的相应操作，或者，可以执行方法实施例300提到的终端设备的相应操作。
为了便于理解，以下将以方法实施例100提到的终端设备的相应操作为例进行说明。
处理器810调用存储器820中存储的指令，执行以下操作：
确定当前基于Uu接口进行的第一业务的通信不能满足所述第一业务的通信需求；或，终端设备确定当前基于Uu接口进行第一业务的通信时，出现无线链路失败；
使用终端直连D2D通信方式执行所述第一业务的通信。
可选地，所述终端设备确定当前基于Uu接口进行的第一业务的通信不能满足所述第一业务的通信需求时，处理器810调用存储器820中存储的指令，执行以下操作：
确定基于Uu接口进行的第一业务的通信的时延不能满足所述第一业务的服务质量QoS要求。
可选地，处理器810调用存储器820中存储的指令，执行以下操作：
利用收发器830监听用于D2D通信的资源池是否存在空闲资源；
在存在所述空闲资源时，采用所述空闲资源执行所述第一业务的通信。
可选地，处理器810调用存储器820中存储的指令，执行以下操作：
通过所述网络设备发送的下行广播信道，确定所述资源池的信息。
可选地，在所述终端设备确定当前基于Uu接口进行的第一业务的通信不能满足所述第一业务的通信需求时，处理器810调用存储器820中存储的指令，执行以下操作：
通过收发器830向网络设备发送第一消息，所述第一消息用于指示基于 Uu接口进行的第一业务的通信不能满足所述第一业务的通信需求；
通过收发器830接收所述网络设备发送的第二消息，所述第二消息用于指示为所述终端设备配置的采用D2D模式执行所述第一业务的通信的资源；
所述终端设备采用所述网络设备为所述终端设备配置的所述资源，使用终端直连D2D通信方式执行所述第一业务的通信。
可选地，处理器810调用存储器820中存储的指令，执行以下操作：
若在采用用于D2D通信的资源池中的空闲资源执行所述第一业务的通信之后，利用收发器830接收到所述第二消息，放弃采用所述空闲资源执行所述第一业务的通信，并采用所述网络设备为终端设备配置的所述资源，使用终端直连D2D通信方式执行所述第一业务的通信。
可选地，处理器810调用存储器820中存储的指令，执行以下操作：
若在第一定时器内未通过收发器830接收到所述第二消息，使用用于D2D通信的资源池中的空闲资源执行所述第一业务的通信；
若在所述第一定时器到时后启动的第二定时器内利用收发器830接收到所述第二消息，放弃采用所述空闲资源执行所述第一业务的通信，并采用所述网络设备为终端设备配置的所述资源，使用终端直连D2D通信方式执行所述第一业务的通信。
可选地，处理器810调用存储器820中存储的指令，执行以下操作：
利用收发器830接收网络设备发送的扰码序号；
利用收发器830向网络设备上报待发送数据的数据量；
利用所述扰码序号，利用收发器830接收网络设备根据所述数据量发送的所述第二消息。
可选地，处理器810调用存储器820中存储的指令，执行以下操作：
采用所述网络设备为所述终端设备预配置的资源，使用D2D通信方式执行所述第一业务的通信。
为了便于理解，以下将以方法实施例200提到的终端设备的相应操作为例进行说明。
处理器810调用存储器820中存储的指令，执行以下操作：
通过收发器830接收网络设备发送的指示消息，所述指示信息用于指示将所述第一业务的通信从基于Uu接口的通信方式切换到D2D通信方式；
使用D2D通信方式，执行所述第一业务的通信。
可选地，处理器810调用存储器820中存储的指令，执行以下操作：
通过收发器830监听用于D2D通信的资源池是否存在空闲资源；
在存在所述空闲资源时，采用所述空闲资源执行所述第一业务的通信。
可选地，所述指示信息还进一步包括用于D2D通信的资源；
处理器810调用存储器820中存储的指令，执行以下操作：
使用所述D2D通信方式，利用所述指示信息指示的所示资源，执行所述第一业务的通信。
可选地，处理器810调用存储器820中存储的指令，执行以下操作：
通过收发器830向所述网络设备发送通知消息，所述通知消息用于指示基于所述Uu接口进行通信的所述第一业务的延时或延时是否满足QoS要求。
可选地，所述通知消息还用于指示基于所述Uu接口进行通信的其他业务的延时或延时是否满足QoS要求。
为了便于理解，以下将以方法实施例200提到的网络设备的相应操作为例进行说明。
处理器810调用存储器820中存储的指令，执行以下操作：
确定当前基于Uu接口通信的第一业务需要进行D2D通信；
通过收发器830向终端设备发送指示信息，所述指示信息用于指示将所述第一业务的通信从基于Uu接口的通信方式切换到D2D通信方式。
可选地，所述指示信息还进一步包括用于D2D通信的资源。
可选地，处理器810调用存储器820中存储的指令，执行以下操作：
通过收发器830接收终端设备发送的多个业务的通信质量或通信延时，其中，所述多个业务包括第一业务，
根据所述多个业务的当前通信质量或通信延时，确定第一业务需要进行D2D通信。
为了便于理解，以下将以方法实施例300提到的终端设备的相应操作为例进行说明。
处理器810调用存储器820中存储的指令，执行以下操作：
确定在当前D2D通信方式下，待发送数据的数据量；
通过收发器830向所述网络设备上报所述数据量；
在通过收发器830接收到所述网络设备发送资源分配消息时，利用所述资源分配消息指示的资源，执行针对所述待发送数据的D2D通信，所述资源分配消息用于指示为所述待发送数据分配的进行D2D通信的资源；
在未通过收发器830接收到所述资源分配消息时，利用资源池中的空闲资源执行D2D通信，其中，所述资源池包括能够用于D2D通信的资源。
可选地，处理器810调用存储器820中存储的指令，执行以下操作：
若在第一定时器到达时，未通过收发器830接收到所述资源分配消息时，利用所述资源池中的空闲资源执行D2D通信。
若在所述第一定时器到时后启动的第二定时器内通过收发器830接收到所述网络设备分配的所述资源分配消息，放弃采用所述空闲资源执行所述第一业务的通信，并采用所述资源分配消息指示的所述资源，使用终端直连D2D通信方式执行所述第一业务的通信。
可选地，处理器810调用存储器820中存储的指令，执行以下操作：
通过收发器830接收网络设备发送的扰码序号；
利用所述扰码序号，通过收发器830接收网络设备根据所述数据量发送的所述资源分配消息。
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申请的范围。
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。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、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，在本申请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，本申请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)执行本申请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、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应所述以权利要求的保护范围为准。

Claims (40)

  1. 一种通信方法，其特征在于，包括：
    终端设备确定当前基于Uu接口进行的第一业务的通信不能满足所述第一业务的通信需求；或，终端设备确定当前基于Uu接口进行第一业务的通信时，出现无线链路失败；
    所述终端设备使用终端直连D2D通信方式执行所述第一业务的通信。
  2. 根据权利要求1所述的方法，其特征在于，所述终端设备确定当前基于Uu接口进行的第一业务的通信不能满足所述第一业务的通信需求，包括：
    所述终端设备确定基于Uu接口进行的第一业务的通信的时延不能满足所述第一业务的服务质量QoS要求。
  3. 根据权利要求1或2所述的方法，其特征在于，所述终端设备使用D2D通信方式执行所述第一业务的通信，包括：
    所述终端设备监听用于D2D通信的资源池是否存在空闲资源；
    在存在所述空闲资源时，采用所述空闲资源执行所述第一业务的通信。
  4. 根据权利要求3所述的方法，其特征在于，所述终端设备监听用于D2D通信的资源池是否存在空闲资源之前，所述方法还包括：
    通过所述网络设备发送的下行广播信道，确定所述资源池的信息。
  5. 根据权利要求1至4中任一项所述的方法，其特征在于，
    在所述终端设备确定当前基于Uu接口进行的第一业务的通信不能满足所述第一业务的通信需求时，所述方法还包括：
    所述终端设备向网络设备发送第一消息，所述第一消息用于指示基于Uu接口进行的第一业务的通信不能满足所述第一业务的通信需求；
    所述终端设备接收所述网络设备发送的第二消息，所述第二消息用于指示为所述终端设备配置的采用D2D模式执行所述第一业务的通信的资源；
    所述终端设备使用终端直连D2D通信方式执行所述第一业务的通信，包括：所述终端设备采用所述网络设备为所述终端设备配置的所述资源，使用终端直连D2D通信方式执行所述第一业务的通信。
  6. 根据权利要求5所述的方法，其特征在于，所述终端设备使用终端直连D2D通信方式执行所述第一业务的通信，包括：
    若所述终端设备在采用用于D2D通信的资源池中的空闲资源执行所述 第一业务的通信之后，接收到所述第二消息，则所述终端设备放弃采用所述空闲资源执行所述第一业务的通信，并采用所述网络设备为终端设备配置的所述资源，使用终端直连D2D通信方式执行所述第一业务的通信。
  7. 根据权利要求6所述的方法，其特征在于，所述终端设备使用终端直连D2D通信方式执行所述第一业务的通信，包括：
    若在第一定时器内未接收到所述第二消息，使用用于D2D通信的资源池中的空闲资源执行所述第一业务的通信；
    若在所述第一定时器到时后启动的第二定时器内接收到所述第二消息，则所述终端设备放弃采用所述空闲资源执行所述第一业务的通信，并采用所述网络设备为终端设备配置的所述资源，使用终端直连D2D通信方式执行所述第一业务的通信。
  8. 根据权利要求5至7中任一项所述的方法，其特征在于，所述终端设备接收所述网络设备发送的第二消息之前，所述方法还包括：
    所述终端设备接收网络设备发送的扰码序号；
    所述终端设备向网络设备上报待发送数据的数据量；
    所述终端设备接收所述网络设备发送的第二消息，包括：利用所述扰码序号，接收网络设备根据所述数据量发送的所述第二消息。
  9. 根据权利要求1或2所述的方法，其特征在于，所述终端设备使用终端直连D2D通信方式执行所述第一业务的通信，包括：
    采用所述网络设备为所述终端设备预配置的资源，使用D2D通信方式执行所述第一业务的通信。
  10. 一种通信方法，其特征在于，包括：
    终端设备接收网络设备发送的指示消息，所述指示信息用于指示将所述第一业务的通信从基于Uu接口的通信方式切换到D2D通信方式；
    所述终端设备使用D2D通信方式，执行所述第一业务的通信。
  11. 根据权利要求10所述的方法，其特征在于，所述终端设备使用D2D通信方式，执行所述第一业务的通信，包括：
    所述终端设备监听用于D2D通信的资源池是否存在空闲资源；
    在存在所述空闲资源时，采用所述空闲资源执行所述第一业务的通信。
  12. 根据权利要求10所述的方法，其特征在于，所述指示信息还进一步包括用于D2D通信的资源；
    所述终端设备使用D2D通信方式，执行所述第一业务的通信，包括：
    所述终端设备使用所述D2D通信方式，利用所述指示信息指示的所示资源，执行所述第一业务的通信。
  13. 根据权利要求10至12中任一项所述的方法，其特征在于，终端设备接收网络设备发送的指示消息之前，所述方法还包括：
    所述终端设备向所述网络设备发送通知消息，所述通知消息用于指示基于所述Uu接口进行通信的所述第一业务的延时或延时是否满足QoS要求。
  14. 根据权利要求13所述的方法，其特征在于，所述通知消息还用于指示基于所述Uu接口进行通信的其他业务的延时或延时是否满足QoS要求。
  15. 一种通信方法，其特征在于，包括：
    网络设备确定当前基于Uu接口通信的第一业务需要进行D2D通信；
    向终端设备发送指示信息，所述指示信息用于指示将所述第一业务的通信从基于Uu接口的通信方式切换到D2D通信方式。
  16. 根据权利要求15所述的方法，其特征在于，所述指示信息还进一步包括用于D2D通信的资源。
  17. 根据权利要求15或16所述的方法，其特征在于，所述方法还包括：
    接收终端设备发送的多个业务的通信质量或通信延时，其中，所述多个业务包括第一业务，
    根据所述多个业务的当前通信质量或通信延时，确定第一业务需要进行D2D通信。
  18. 一种通信方法，其特征在于，包括：
    终端设备确定在当前D2D通信方式下，待发送数据的数据量；
    所述终端设备向所述网络设备上报所述数据量；
    在接收到所述网络设备发送资源分配消息时，利用所述资源分配消息指示的资源，执行针对所述待发送数据的D2D通信，所述资源分配消息用于指示为所述待发送数据分配的进行D2D通信的资源；
    在未接收到所述资源分配消息时，利用资源池中的空闲资源执行D2D通信，其中，所述资源池包括能够用于D2D通信的资源。
  19. 根据权利要求18所述的方法，其特征在于，
    利用资源池中的空闲资源执行D2D通信，包括：若在第一定时器到达 时，未接收到所述资源分配消息时，利用所述资源池中的空闲资源执行D2D通信；
    利用所述资源分配消息指示的资源，执行针对所述待发送数据的D2D通信，包括：
    若在所述第一定时器到时后启动的第二定时器内接收到所述网络设备分配的所述资源分配消息，则所述终端设备放弃采用所述空闲资源执行所述第一业务的通信，并采用所述资源分配消息指示的所述资源，使用终端直连D2D通信方式执行所述第一业务的通信。
  20. 根据权利要求18或19所述的方法，其特征在于，所述方法还包括：
    所述终端设备接收网络设备发送的扰码序号；
    利用所述扰码序号，接收网络设备根据所述数据量发送的所述资源分配消息。
  21. 一种终端设备，其特征在于，包括：
    确定单元，用于确定当前基于Uu接口进行的第一业务的通信不能满足所述第一业务的通信需求；或，确定当前基于Uu接口进行第一业务的通信时，出现无线链路失败；
    执行单元，用于使用终端直连D2D通信方式执行所述第一业务的通信。
  22. 根据权利要求21所述的终端设备，其特征在于，所述确定单元进一步用于：
    确定基于Uu接口进行的第一业务的通信的时延不能满足所述第一业务的服务质量QoS要求。
  23. 根据权利要求21或22所述的终端设备，其特征在于，所述执行单元具体用于：
    监听用于D2D通信的资源池是否存在空闲资源；
    在存在所述空闲资源时，采用所述空闲资源执行所述第一业务的通信。
  24. 根据权利要求23所述的终端设备，其特征在于，所述执行单元进一步用于：
    通过所述网络设备发送的下行广播信道，确定所述资源池的信息。
  25. 根据权利要求21至24中任一项所述的终端设备，其特征在于，在所述确定单元确定当前基于Uu接口进行的第一业务的通信不能满足所述第一业务的通信需求时，所述执行单元进一步用于：
    向网络设备发送第一消息，所述第一消息用于指示基于Uu接口进行的第一业务的通信不能满足所述第一业务的通信需求；
    接收所述网络设备发送的第二消息，所述第二消息用于指示为所述终端设备配置的采用D2D模式执行所述第一业务的通信的资源；
    采用所述网络设备为所述终端设备配置的所述资源，使用终端直连D2D通信方式执行所述第一业务的通信。
  26. 根据权利要求25所述的终端设备，其特征在于，所述执行单元进一步用于：
    若所述执行单元在采用用于D2D通信的资源池中的空闲资源执行所述第一业务的通信之后，接收到所述第二消息，放弃采用所述空闲资源执行所述第一业务的通信，并采用所述网络设备为终端设备配置的所述资源，使用终端直连D2D通信方式执行所述第一业务的通信。
  27. 根据权利要求26所述的终端设备，其特征在于，所述执行单元进一步用于：
    若在第一定时器内未接收到所述第二消息，使用用于D2D通信的资源池中的空闲资源执行所述第一业务的通信；
    若在所述第一定时器到时后启动的第二定时器内接收到所述第二消息，放弃采用所述空闲资源执行所述第一业务的通信，并采用所述网络设备为终端设备配置的所述资源，使用终端直连D2D通信方式执行所述第一业务的通信。
  28. 根据权利要求25至27中任一项所述的终端设备，其特征在于，所述执行单元进一步用于：
    接收网络设备发送的扰码序号；
    向网络设备上报待发送数据的数据量；
    利用所述扰码序号，接收网络设备根据所述数据量发送的所述第二消息。
  29. 根据权利要求21或22所述的终端设备，其特征在于，所述执行单元进一步用于：
    采用所述网络设备为所述终端设备预配置的资源，使用D2D通信方式执行所述第一业务的通信。
  30. 一种终端设备，其特征在于，包括：
    接收单元，用于接收网络设备发送的指示消息，所述指示信息用于指示将所述第一业务的通信从基于Uu接口的通信方式切换到D2D通信方式；
    执行单元，用于使用D2D通信方式，执行所述第一业务的通信。
  31. 根据权利要求30所述的终端设备，其特征在于，所述执行单元进一步用于：
    监听用于D2D通信的资源池是否存在空闲资源；
    在存在所述空闲资源时，采用所述空闲资源执行所述第一业务的通信。
  32. 根据权利要求30所述的终端设备，其特征在于，所述指示信息还进一步包括用于D2D通信的资源；
    所述执行单元进一步用于：
    使用所述D2D通信方式，利用所述指示信息指示的所示资源，执行所述第一业务的通信。
  33. 根据权利要求30至32中任一项所述的终端设备，其特征在于，还包括发送单元：
    用于在所述接收单元接收网络设备发送的指示消息之前，向所述网络设备发送通知消息，所述通知消息用于指示基于所述Uu接口进行通信的所述第一业务的延时或延时是否满足QoS要求。
  34. 根据权利要求33所述的终端设备，其特征在于，所述通知消息还用于指示基于所述Uu接口进行通信的其他业务的延时或延时是否满足QoS要求。
  35. 一种网络设备，其特征在于，包括：
    确定单元，用于确定当前基于Uu接口通信的第一业务需要进行D2D通信；
    发送单元，用于向终端设备发送指示信息，所述指示信息用于指示将所述第一业务的通信从基于Uu接口的通信方式切换到D2D通信方式。
  36. 根据权利要求35所述的网络设备，其特征在于，所述指示信息还进一步包括用于D2D通信的资源。
  37. 根据权利要求35或36所述的网络设备，其特征在于，还包括接收单元，所述接收单元用于接收终端设备发送的多个业务的通信质量或通信延时，其中，所述多个业务包括第一业务，
    所述确定单元，用于根据所述接收单元接收的所述多个业务的当前通信 质量或通信延时，确定第一业务需要进行D2D通信。
  38. 一种终端设备，其特征在于，包括：
    确定单元，用于确定在当前D2D通信方式下，待发送数据的数据量；
    发送单元，用于向所述网络设备上报所述数据量；
    接收单元，用于接收所述网络设备发送资源分配消息；
    执行单元，用于在所述接收单元接收到所述网络设备发送资源分配消息时，利用所述资源分配消息指示的资源，执行针对所述待发送数据的D2D通信，所述资源分配消息用于指示为所述待发送数据分配的进行D2D通信的资源；在所述接收单元未接收到所述资源分配消息时，利用资源池中的空闲资源执行D2D通信，其中，所述资源池包括能够用于D2D通信的资源。
  39. 根据权利要求38所述的终端设备，其特征在于，所述执行单元进一步用于：
    若在第一定时器到达时，未接收到所述资源分配消息时，利用所述资源池中的空闲资源执行D2D通信；
    若在所述第一定时器到时后启动的第二定时器内接收到所述网络设备分配的所述资源分配消息，则所述终端设备放弃采用所述空闲资源执行所述第一业务的通信，并采用所述资源分配消息指示的所述资源，使用终端直连D2D通信方式执行所述第一业务的通信。
  40. 根据权利要求38或39所述的终端设备，其特征在于，所述接收单元进一步用于：
    接收网络设备发送的扰码序号；
    利用所述扰码序号，接收网络设备根据所述数据量发送的所述资源分配消息。
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