WO2017132946A1 - 数据传输方法及装置 - Google Patents

数据传输方法及装置 Download PDF

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Publication number
WO2017132946A1
WO2017132946A1 PCT/CN2016/073525 CN2016073525W WO2017132946A1 WO 2017132946 A1 WO2017132946 A1 WO 2017132946A1 CN 2016073525 W CN2016073525 W CN 2016073525W WO 2017132946 A1 WO2017132946 A1 WO 2017132946A1
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WIPO (PCT)
Prior art keywords
data packet
communication device
relay communication
identifier
user equipment
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PCT/CN2016/073525
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English (en)
French (fr)
Inventor
华尧
蔺波
应江威
肖潇
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2016/073525 priority Critical patent/WO2017132946A1/zh
Publication of WO2017132946A1 publication Critical patent/WO2017132946A1/zh

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    • GPHYSICS
    • G07CHECKING-DEVICES
    • G07BTICKET-ISSUING APPARATUS; FARE-REGISTERING APPARATUS; FRANKING APPARATUS
    • G07B15/00Arrangements or apparatus for collecting fares, tolls or entrance fees at one or more control points
    • G07B15/06Arrangements for road pricing or congestion charging of vehicles or vehicle users, e.g. automatic toll systems

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a data transmission method and apparatus.
  • the second data transmission mode is mainly used for the case where the D2D link between the vehicles is not good.
  • the data transmitted by the vehicle on the D2D link can be received by the RSU installed in the street corner.
  • the data is forwarded to the base station, and the base station transmits the received data to other vehicles in the coverage area through the downlink multicast or broadcast channel.
  • the vehicle when data transmission is performed using the second method, the vehicle can be regarded as a user equipment (User Equipment, UE), and communicates with the base station indirectly through the RSU.
  • the RSU may receive data broadcast by the surrounding UE through the application software; after receiving the data broadcast by any UE, the RSU sends the received data to the base station through the connection established with the base station, and the base station forwards the data to the application server; The server broadcasts the received data to other UEs through the network.
  • User Equipment User Equipment
  • multiple RSUs forward the data to the base station, so that the base station sends the received multiple duplicate data to the application server, causing the application server to multicast in the downlink. Or sending a large amount of duplicate data on the broadcast channel, resulting in unnecessary waste of transmission resources.
  • the embodiment of the invention provides a data transmission method and device, which solves the problem of waste of transmission resources caused by sending a large amount of duplicate data in the prior art, and the technical solution is as follows:
  • a data transmission method comprising:
  • Receiving a data packet sent by the relay communication device where the data packet carries a user equipment identifier and a data packet identifier for transmitting the data packet, where the data packet identifier is used to uniquely identify the data packet; according to before receiving the data packet Determining whether the same data packet sent by the same user equipment is repeatedly received, if the data is determined by the user equipment identifier and the data packet identifier of the received data packet, and the user equipment identifier and the data packet identifier of the data packet; If the packet is not the same received data packet sent by the same user equipment, the data packet is forwarded to the service application server.
  • the data packet After deduplicating the data packet with the same data packet identifier of the same user equipment, the data packet is sent to the service application server, so that the data packet received by the service application server does not include duplicate data packets, so the service application server is in the user
  • the overhead of the transmission resource is greatly reduced, and the waste of the transmission resource is avoided.
  • the user equipment identifier and the data packet identifier of the data packet received before receiving the data packet and the user equipment of the data packet The identifier and the data packet identifier, determining whether to repeatedly receive the same data packet sent by the same user equipment, including: determining, in the specified time window or the buffer area, the user of the data packet received before receiving the data packet Whether the user equipment identifier and the data packet identifier of the data packet exist in the device identifier and the data packet identifier; if the user equipment identifier and the data packet identifier of the data packet exist, it is determined that the same user equipment is repeatedly received.
  • a data packet where the data packet is identified as the frame number of the data packet or the transmission sequence number of the data packet.
  • the base station deduplicates the data packets received in the specified time window or in the buffer area, thereby avoiding the judgment of excessive data packets and avoiding waste of resources.
  • the length of the specified time window or the size of the buffer area is configured by configuration signaling of the access network or by the network management system.
  • Flexible configuration is provided by taking configuration signaling or system configuration procedures.
  • a data transmission method comprising:
  • Receiving a first data packet sent by the user equipment where the first data packet carries a user equipment identifier of the user equipment; adding a first data packet identifier to the first data packet, to obtain a second data packet;
  • the second data packet is sent to the base station, and the base station performs data packet deduplication according to the first data packet identifier and the user equipment identifier of the user equipment by using a frame number-based deduplication manner.
  • the base station can de-receive the received data packet according to the data packet identifier, and send the de-duplicated data packet to the service application server, thereby greatly reducing the service application server.
  • the overhead of transmitting resources when broadcasting data packets to user equipment avoids waste of transmission resources.
  • the first data packet is identified as receiving a frame number of the first data packet.
  • the frame number is added to the data packet sent by the user equipment by the relay communication device, so that the base station can simply and accurately perform deduplication of the data packet according to the data packet identifier of the received data packet, and does not need to modify the user while implementing the data packet deduplication.
  • the format in which the device sends the packet is not limited to the frame number of the first data packet.
  • the frame number of the first data packet is a D2D system frame number DFN corresponding to the first data packet sending time, or the first The frame number of the data packet is the system frame number of the base station corresponding to the first data packet transmission time.
  • Different packet identification representations are provided by using the D2D system frame number or the system frame number of the base station as the packet identifier.
  • the method further includes: determining whether the received power of the first data packet is greater than a minimum power threshold; if the received power of the first data packet is greater than the minimum power threshold, performing a first data packet identifier and a subsequent sending step for the first data packet.
  • the minimum power threshold By setting the minimum power threshold, the relay communication device is prevented from forwarding the data packet that is too far away from the relay communication device to the base station, thereby causing unnecessary power consumption and transmission resource consumption.
  • the method before the receiving the first data packet sent by the user equipment, the method further includes: receiving de-reconfiguration information sent by the base station, where Dereferencing the reconfiguration information is used to indicate the deduplication mode adopted by the base station, and correspondingly, if the deduplication configuration information is the first deduplication configuration information, receiving the first data sent by the user equipment After the packet, the step of adding the first data packet identifier to the first data packet is performed, and the deduplication manner indicated by the first de-duplication configuration information is a frame number-based deduplication.
  • the data packet with the added frame number can be sent to the base station according to the deduplication mode of the base station, so that the base station can perform deduplication according to the frame number of the received data packet, and the deduplicated data packet is
  • the transmission to the service application server greatly reduces the overhead of the service application server transmitting resources when broadcasting data packets to the user equipment, and avoids waste of transmission resources.
  • the method further includes: delivering the first data packet to an application layer, And receiving forwarding layer selection information that is sent by the application layer by using a cross-layer primitive, where the forwarding layer selection information is used to indicate forwarding based on the application layer or the communication layer; and if the forwarding layer selection information indicates that the application layer is based on the application layer Forwarding, performing the adding the first data packet identifier and the subsequent sending step for the first data packet.
  • the communication between the application layer and the communication layer is implemented by the cross-layer primitive mode, so that the relay communication device can learn the forwarding capability of the application layer, and then add the data packet identifier to the received data packet, so as to implement the base station to receive the data packet. Going heavy.
  • a data transmission method comprising:
  • Receiving a third data packet sent by the user equipment where the third data packet carries a user equipment identifier of the user equipment and a third data packet identifier, where the third data packet identifier is added by the user equipment when sending data; Generating a fourth data packet according to the data content of the third data packet and the third data packet identifier, and sending the fourth data packet to a base station, where the base station identifies and according to the third data packet
  • the user equipment identifier of the user equipment uses the serial number-based deduplication method to perform data packet deduplication.
  • the third data packet identifier is a sending sequence number of the third data packet, where the sending sequence number is maintained by the user equipment A value that varies regularly over a specified range of values.
  • the method further includes: determining whether the received power of the third data packet is greater than a minimum power threshold; if the received power of the third data packet is greater than the minimum power threshold, performing the step of transmitting the third data packet to the base station.
  • the minimum power threshold By setting the minimum power threshold, the relay communication device is prevented from forwarding the data packet that is too far away from the relay communication device to the base station, thereby causing unnecessary power consumption and transmission resource consumption.
  • the method before the receiving the third data packet sent by the user equipment, the method further includes: receiving the de-configuration information sent by the base station
  • the de-reconfiguration information is used to indicate the de-duplication mode adopted by the base station, and correspondingly, if the de-reconfiguration information is the second de-reconfiguration information, the device that is sent by the user equipment is received.
  • the third data packet is executed, performing a fourth data packet according to the data content of the third data packet and the third data packet identifier, and a subsequent sending step, where the second deduplication information indicates a deduplication manner For deduplication based on serial number.
  • the de-duplication mode is used to learn the de-duplication mode adopted by the base station, and then the corresponding data packet identifier is added to the data packet, so that the base station de-duplicates the received data packet.
  • the method further includes: delivering the third data packet to an application layer, And receiving forwarding layer selection information that is sent by the application layer by using a cross-layer primitive, where the forwarding layer selection information is used to indicate forwarding based on the application layer or the communication layer; and if the forwarding layer selection information indicates that the application layer is based on the application layer Forwarding, the step of generating a fourth data packet and subsequent transmission according to the data content of the third data packet and the third data packet identifier is performed.
  • the communication between the application layer and the communication layer is implemented by the cross-layer primitive mode, so that the relay communication device can learn the forwarding capability of the application layer, and then add the data packet identifier to the received data packet, so as to implement the base station to receive the data packet. Going heavy.
  • a data transmission method comprising:
  • the device sends the third data packet, and the third data packet is sent by the relay communication device to the base station.
  • the base station can de-receive the received data packet according to the data packet identifier, and send the de-duplicated data packet.
  • the overhead of the resource transmission of the service application server when broadcasting the data packet to the user equipment is greatly reduced, and the waste of the transmission resource is avoided.
  • the third data packet identifier is a sending sequence number of the third data packet, where the sending sequence number is maintained by the user equipment A value that varies regularly over a specified range of values.
  • the method before the acquiring data to be broadcast, the method further includes: receiving de-reconfiguration information broadcast by the base station, the de-reconfiguration The information is used to indicate the de-duplication mode adopted by the base station, and correspondingly, when the de-reconfiguration information is the second de-duplication information, performing data according to the third data packet identifier and the to-be-broadcast data
  • the deduplication mode indicated by the second de-duplication information is a de-duplication based on the sequence number.
  • the de-duplication mode is used to learn the de-duplication mode adopted by the base station, and then the corresponding data packet identifier is added to the data packet, so that the base station de-duplicates the received data packet.
  • a data transmission method comprising:
  • the relay communication device and other user equipments having the receiving configuration parameters of the relay communication device can receive the unicast data packet. It is no longer necessary to send broadcast data packets to other user equipments, which avoids waste of transmission resources.
  • a packet header of the fifth data packet carries a specified identifier, where the specified identifier is used to indicate that the fifth data packet is sent to the middle And following the data packet of the communication device, so that the other user equipment can receive the fifth data packet according to the specified identifier; or the relay communication device identifier of the relay communication device includes the specified prefix information, where the specified prefix information is used.
  • the fifth data packet is instructed to be a data packet sent to the relay communication device, so that other user equipments can receive the fifth data packet according to the specified prefix information.
  • the other user equipment can learn that the data packet is a data packet sent to the relay communication device according to the specified identifier or the specified prefix information, and the user equipment that does not need to send the data packet additionally sends a broadcast.
  • the data packet avoids the waste of transmission resources.
  • the receiving configuration parameter of the relay communication device includes at least an integrity protection parameter configured by the base station for the relay communication device, and the relay a relay communication device identifier and a header compression configuration of the communication device, the integrity protection parameter is configured to perform data integrity authentication on the data to be sent, and the relay communication device identifier of the relay communication device is used to indicate The destination relay communication device of the fourth data packet is the relay communication device, and the header compression configuration is configured to compress the packet header when the fourth data packet is generated.
  • the data packet is processed and sent by using the receiving configuration parameter of the relay communication device, so that the relay communication device and other user equipment can receive the data packet according to the receiving configuration parameter, and the user equipment does not need to send the broadcast to other user equipment. Packets avoid the waste of transmission resources.
  • the integrity protection The parameters are the medium access control MAC layer certificate, or the packet data convergence protocol PDCP layer certificate, or the PDCP layer based on the symmetric key information integrity check MIC domain.
  • the integrity protection of the data packet is implemented in a plurality of ways, so that the integrity protection of the data packet is highly flexible and the implementation manner is simple.
  • a data transmission method comprising:
  • Monitoring the data packet determining whether the data packet is a data packet sent to the relay communication device; if the data packet is a data packet sent to the relay communication device, according to the stored receiving configuration of the relay communication device
  • the parameter receives the packet. After judging that the monitored data packet is a data packet sent to the relay communication device, the data packet can be received according to the stored receiving configuration parameter, and the user equipment that does not need to send the data packet additionally sends a broadcast data packet. Avoid waste of transmission resources.
  • the determining whether the data packet is a data packet that is sent by the other user equipment to the relay communication device includes: performing the data packet Parsing, if the packet header of the data packet carries the specified identifier, determining that the data packet is a data packet sent to the relay communication device, and the specified identifier is used to indicate that the data packet is sent to the relay a data packet of the communication device; or, parsing the data packet, if the destination address of the data packet includes the specified prefix information, determining that the data packet is a data packet sent to the relay communication device, Specifying the prefix information to indicate that the fourth data packet is a data packet sent to the relay communication device; or parsing the data packet, if the data packet carries integrity protection parameters, relay communication The device identification, the header compression configuration, and the stored reception configuration parameters of the relay communication device are matched, and the data packet is determined to be a data packet sent to the relay communication device. After judging that the data packet Parsing, if the packet header of the data packet carries the
  • the receiving configuration parameter of the relay communication device is carried by a broadcast message of the base station, or the receiving configuration parameter of the relay communication device is relayed
  • the broadcast message of the communication device is carried, or the receiving configuration parameter of the relay communication device is configured by the network management system.
  • the method for notifying the receiving configuration parameter of the relay communication device to the user equipment in a different manner, so that the user equipment knows the receiving configuration parameter of the relay communication device is highly flexible.
  • a seventh aspect provides a data transmission method, the method comprising:
  • the receiving configuration parameter of the relay communication device includes at least an integrity protection parameter configured by the base station for the relay communication device, and a relay communication device identifier of the relay communication device And a header compression configuration, where the user equipment in the coverage of the base station receives the data packet sent by the other user equipment to the relay communication device according to the receiving configuration parameter of the relay communication device.
  • the configuration parameters of the relay communication device By receiving the configuration parameters of the relay communication device, all the user equipments in the coverage of the base station can obtain the receiving configuration parameters of the relay communication device, and receive the single message sent by the other user equipment to the relay communication device according to the receiving configuration parameter.
  • the data packet is broadcast, and the user equipment that does not need to send the data packet additionally sends a broadcast data packet, thereby avoiding waste of transmission resources.
  • the integrity protection parameter is a medium access control MAC layer certificate, or a packet data convergence protocol PDCP layer certificate, or a PDCP layer based on a symmetric key Information integrity check MIC domain.
  • the integrity protection of the data packet is implemented in a plurality of ways, so that the integrity protection of the data packet is highly flexible and the implementation manner is simple.
  • a data transmission method comprising:
  • the receiving configuration parameter configured by the base station, a fifth data packet sent by the user equipment, where the receiving configuration parameter includes at least an integrity protection parameter configured by the base station for the relay communication device, and relay communication of the relay communication device.
  • the relay communication device identifier is used to indicate that the destination relay communication device of the fifth data packet is the relay communication device; according to the integrity protection parameter and the header compression configuration Processing the fifth data packet to obtain a sixth data packet; and sending the sixth data packet to the base station.
  • the data packet sent by the user equipment is parsed by receiving the configuration parameter, the data packet is sent to the base station, so that other user equipments outside the communication range of the user equipment can also receive the data packet sent by the user equipment, and the user equipment is implemented. data transmission.
  • the processing by using the integrity protection parameter and the header compression configuration, processing the fifth data packet, to obtain a sixth data packet, including And performing integrity verification on the fifth data packet according to the integrity protection parameter, and decompressing the packet header of the fifth data packet according to the header compression configuration after the integrity check is passed,
  • the sixth data packet is obtained.
  • the data packet sent by the user equipment is parsed by using the receiving configuration parameter, so that the parsed data packet is sent to the base station, so that other user equipments outside the communication range of the user equipment that sends the data packet can also receive the user equipment.
  • the data packet realizes the data transmission between the user equipment.
  • the integrity protection parameter is a medium access control MAC layer certificate, or a packet data convergence protocol PDCP layer certificate, or a PDCP layer based on a symmetric key Information integrity check MIC domain.
  • the integrity protection of the data packet is implemented in a plurality of ways, so that the integrity protection of the data packet is highly flexible and the implementation manner is simple.
  • the method further includes: receiving a receiving configuration parameter configured by the base station, so that after the user equipment learns the receiving configuration parameter of the relay communication device, The receiving configuration parameter of the relay communication device transmits a data packet to the relay communication device.
  • the receiving configuration parameter configured by the broadcast base station enables the user equipment in the communication range to learn the receiving configuration parameter, and the user equipment uses the receiving configuration parameter to receive the data packet sent by other user equipment, and does not need other user equipment to additionally send the broadcast. Packet.
  • the method further includes: determining whether the received power of the fifth data packet is greater than a minimum power threshold; if the received power of the fifth data packet is greater than the minimum power threshold, performing processing on the fifth data packet according to the integrity protection parameter and the header compression configuration and a subsequent sending step.
  • the minimum power threshold By setting the minimum power threshold, the relay communication device is prevented from forwarding the data packet that is too far away from the relay communication device to the base station, thereby causing unnecessary power consumption and transmission resource consumption.
  • a data transmission apparatus comprising a plurality of functional modules for performing the method of the first aspect described above.
  • the apparatus further includes other functional modules for performing the methods described in the various possible implementations of the first aspect described above.
  • a data transmission apparatus comprising a plurality of functional modules for performing the method of the second aspect described above.
  • the apparatus further includes other functional modules for performing the methods described in the various possible implementations of the second aspect above.
  • a data transmission apparatus comprising a plurality of functional modules for performing the method of the third aspect described above.
  • the apparatus further includes other functional modules for performing the methods described in the various possible implementations of the third aspect above. Reassembling the data packet carrying the data packet identifier sent by the user equipment, retaining the original data packet identifier, so that the base station can deduplicate the data packet according to the received data packet identifier, and send the deduplicated data packet To the service application server, the overhead of the resource transmission of the service application server when broadcasting the data packet to the user equipment is greatly reduced, and the waste of the transmission resource is avoided.
  • a data transmission apparatus comprising a plurality of functional modules for performing the method of the above fourth aspect.
  • the apparatus further includes other functional modules for performing the method described in the multiple possible implementation manners of the foregoing fourth aspect.
  • a data transmission apparatus comprising a plurality of functional modules for performing the method of the above fifth aspect.
  • the apparatus further includes other functional modules for performing the method described in the multiple possible implementation manners of the foregoing fifth aspect.
  • a data transmission apparatus comprising a plurality of functional modules for performing the method of the sixth aspect described above.
  • the apparatus further includes other functional modules for performing the method described in the foregoing various possible implementation manners of the sixth aspect.
  • a data transmission apparatus comprising a plurality of functional modules for performing the method of the seventh aspect described above.
  • the apparatus further includes other functional modules for performing the method described in the foregoing various possible implementation manners of the seventh aspect.
  • a data transmission apparatus comprising a plurality of functional modules for performing the method of the above eighth aspect.
  • the apparatus further includes other functional modules for performing the method described in the multiple possible implementation manners of the foregoing eighth aspect.
  • a base station comprising: a receiver, a transmitter, a memory, and a processor, wherein the receiver, the transmitter, and the memory are respectively connected to the processor, and the memory is used to
  • the storage processor is executable instructions, the processor being configured to:
  • Receiving a data packet sent by the relay communication device where the data packet carries a user equipment identifier and a data packet identifier for transmitting the data packet, where the data packet identifier is used to uniquely identify the data packet; according to before receiving the data packet Determining whether the same data packet sent by the same user equipment is repeatedly received, if the data is determined by the user equipment identifier and the data packet identifier of the received data packet, and the user equipment identifier and the data packet identifier of the data packet; If the packet is not the same received data packet sent by the same user equipment, the data packet is forwarded to the service application server.
  • the data packet After deduplicating the data packet with the same data packet identifier of the same user equipment, the data packet is sent to the service application server, so that the data packet received by the service application server does not include duplicate data packets, so the service application server is in the user
  • the overhead of the transmission resource is greatly reduced, and the waste of the transmission resource is avoided.
  • the processor is further configured to: determine, before the receiving the data packet, in a specified time window or a buffer area Whether the user equipment identifier and the data packet identifier of the data packet exist in the user equipment identifier and the data packet identifier of the obtained data packet; if the user equipment identifier and the data packet identifier of the data packet exist, it is determined that the same is received by the same The same data packet sent by a user equipment; where the data packet is identified as the frame number of the data packet or the transmission sequence number of the data packet.
  • the base station deduplicates the data packets received in the specified time window or in the buffer area, thereby avoiding the judgment of excessive data packets and avoiding waste of resources.
  • the length of the specified time window or the size of the buffer area is configured by configuration signaling of the access network or by the network management system.
  • Flexible configuration is provided by taking configuration signaling or system configuration procedures.
  • a relay communication device comprising: a receiver, a transmitter, a memory, and a processor, wherein the receiver, the transmitter, and the memory are respectively connected to the processor, the memory
  • the processor is configured to:
  • Receiving a first data packet sent by the user equipment where the first data packet carries a user equipment identifier of the user equipment; adding a first data packet identifier to the first data packet, to obtain a second data packet;
  • the two data packets are sent to the base station, and the base station performs data packet deduplication according to the first data packet identifier and the user equipment identifier of the user equipment by using a frame number-based deduplication manner.
  • the base station can de-receive the received data packet according to the data packet identifier, and send the de-duplicated data packet to the service application server, thereby greatly reducing the service application server.
  • the overhead of transmitting resources when broadcasting data packets to user equipment avoids waste of transmission resources.
  • the first data packet is identified as a frame number of the first data packet.
  • the frame number is added to the data packet sent by the user equipment by the relay communication device, so that the base station can simply and accurately perform deduplication of the data packet according to the data packet identifier of the received data packet, and does not need to modify the user while implementing the data packet deduplication.
  • the format in which the device sends the packet is not limited to the eighth data packet.
  • the frame number of the first data packet is a D2D system frame number DFN corresponding to the first data packet sending time, or
  • the frame number of the first data packet is a system frame number of the base station corresponding to the first data packet transmission time.
  • Different packet identification representations are provided by using the D2D system frame number or the system frame number of the base station as the packet identifier.
  • the processor is further configured to: determine whether a received power of the first data packet is greater than a minimum power threshold; When the received power of a data packet is greater than the minimum power threshold, performing a first data packet identifier and a subsequent sending step for the first data packet.
  • the minimum power threshold By setting the minimum power threshold, the relay communication device is prevented from forwarding the data packet that is too far away from the relay communication device to the base station, thereby causing unnecessary power consumption and transmission resource consumption.
  • the processor is further configured to: receive de-reconfiguration information sent by the base station, where the de-reconfiguration information is used to indicate The de-duplication mode adopted by the base station, and correspondingly, if the de-duplication configuration information is the first de-duplication configuration information, after receiving the first data packet sent by the user equipment, performing the The step of adding a first data packet identifier to the data packet, where the deduplication manner indicated by the first de-duplication configuration information is a frame number-based deduplication.
  • the data packet with the added frame number can be sent to the base station according to the deduplication mode of the base station, so that the base station can perform deduplication according to the frame number of the received data packet, and the deduplicated data packet is
  • the transmission to the service application server greatly reduces the overhead of the service application server transmitting resources when broadcasting data packets to the user equipment, and avoids waste of transmission resources.
  • the processor is further configured to: deliver the first data packet to an application layer, and receive by the application layer Forwarding layer selection information sent by the cross-layer primitive mode, the forwarding layer selection information is used to indicate forwarding based on the application layer or the communication layer; and if the forwarding layer selection information indicates forwarding based on the application layer, the performing is the A data packet adds the first data packet identifier and a subsequent transmission step.
  • the communication between the application layer and the communication layer is implemented by the cross-layer primitive mode, so that the relay communication device can learn the forwarding capability of the application layer, and then add the data packet identifier to the received data packet, so as to implement the base station to receive the data packet. Going heavy.
  • a relay communication device comprising: a receiver, a transmitter, a memory, and a processor, wherein the receiver, the transmitter, and the memory are respectively connected to the processor, the memory
  • the processor is configured to:
  • Receiving a third data packet sent by the user equipment where the third data packet carries a user equipment identifier of the user equipment and a third data packet identifier, where the third data packet identifier is added by the user equipment when sending data; Generating a fourth data packet according to the data content of the third data packet and the third data packet identifier, and sending the fourth data packet to a base station, where the base station identifies and according to the third data packet
  • the user equipment identifier of the user equipment uses a sequence number-based deduplication manner to perform data packet deduplication.
  • the third data packet identifier is a sending sequence number of the third data packet, where the sending sequence number is the user equipment Maintained values that change regularly within a specified range of values.
  • the processor is further configured to: determine whether a received power of the third data packet is greater than a minimum power threshold; The step of transmitting the third data packet to the base station is performed when the received power of the three data packets is greater than the minimum power threshold.
  • the minimum power threshold By setting the minimum power threshold, the relay communication device is prevented from forwarding the data packet that is too far away from the relay communication device to the base station, thereby causing unnecessary power consumption and transmission resource consumption.
  • the processor is further configured to: receive de-reconfiguration information sent by the base station, where the de-reconfiguration information is used to indicate The de-duplication mode adopted by the base station, and correspondingly, if the de-reconfiguration information is the second de-duplication information, after receiving the third data packet sent by the user equipment, performing according to the The data content of the third data packet and the third data packet identifier generate a fourth data packet and a subsequent sending step, and the deduplication manner indicated by the second de-duplication configuration information is a de-duplication based on the serial number.
  • the de-duplication mode is used to learn the de-duplication mode adopted by the base station, and then the corresponding data packet identifier is added to the data packet, so that the base station de-duplicates the received data packet.
  • the processor is further configured to: deliver the third data packet to an application layer, and receive, by the application layer, Forwarding layer selection information sent in a cross-layer primitive manner, the forwarding layer selection information is used to indicate forwarding based on an application layer or a communication layer; and if the forwarding layer selection information indicates forwarding based on an application layer, performing The data content of the three data packets and the third data packet identifier, the step of generating the fourth data packet and subsequent transmission.
  • the communication between the application layer and the communication layer is implemented by the cross-layer primitive mode, so that the relay communication device can learn the forwarding capability of the application layer, and then add the data packet identifier to the received data packet, so as to implement the base station to receive the data packet. Going heavy.
  • a user equipment comprising: a receiver, a transmitter, a memory, and a processor, wherein the receiver, the transmitter, and the memory are respectively connected to the processor, and the memory is used for
  • the storage processor is executable instructions, the processor being configured to:
  • the device sends the third data packet, and the third data packet is sent by the relay communication device to the base station.
  • the base station can de-receive the received data packet according to the data packet identifier, and send the de-duplicated data packet.
  • the overhead of the resource transmission of the service application server when broadcasting the data packet to the user equipment is greatly reduced, and the waste of the transmission resource is avoided.
  • the third data packet identifier is a sending sequence number of the third data packet
  • the sending sequence number is the user equipment Maintained values that change regularly within a specified range of values.
  • the processor is further configured to: receive de-reconfiguration information broadcast by the base station, where the de-reconfiguration information is used to indicate The de-duplication mode adopted by the base station, and correspondingly, when the de-reconfiguration information is the second de-duplication information, performing the third data packet identifier and the data to be broadcast, generating the third
  • the deduplication mode indicated by the second de-duplication information is a de-duplication based on the sequence number.
  • the de-duplication mode is used to learn the de-duplication mode adopted by the base station, and then the corresponding data packet identifier is added to the data packet, so that the base station de-duplicates the received data packet.
  • a user equipment including: a receiver, a transmitter, a memory, and a processor, wherein the receiver, the transmitter, and the memory are respectively connected to the processor, and the memory is used for
  • the storage processor is executable instructions, the processor being configured to:
  • Making the relay communication device and owning the relay communication device by transmitting the unicast data packet satisfying the reception configuration parameter of the relay communication device to the relay communication device.
  • the other user equipments that receive the configuration parameters can receive the unicast data packet, and do not need to send additional broadcast data packets to other user equipments, thereby avoiding waste of transmission resources.
  • the packet header of the fifth data packet carries a specified identifier, where the specified identifier is used to indicate that the fifth data packet is sent And the data packet of the relay communication device is configured to enable the other user equipment to receive the fifth data packet according to the specified identifier; or the relay communication device identifier of the relay communication device includes the specified prefix information,
  • the specified prefix information is used to indicate that the fifth data packet is a data packet sent to the relay communication device, so that other user equipments can receive the fifth data packet according to the specified prefix information.
  • the other user equipment can learn that the data packet is a data packet sent to the relay communication device according to the specified identifier or the specified prefix information, and the user equipment that does not need to send the data packet additionally sends a broadcast.
  • the data packet avoids the waste of transmission resources.
  • the receiving configuration parameter of the relay communication device includes at least an integrity protection parameter configured by the base station for the relay communication device, a relay communication device identifier and a header compression configuration of the relay communication device, where the integrity protection parameter is used for performing data integrity authentication on the data to be sent, and the relay communication device identifier of the relay communication device
  • the destination relay communication device for indicating the fourth data packet is the relay communication device
  • the header compression configuration is configured to compress the packet header when the fourth data packet is generated.
  • the data packet is processed and sent by using the receiving configuration parameter of the relay communication device, so that the relay communication device and other user equipment can receive the data packet according to the receiving configuration parameter, and the user equipment does not need to send the broadcast to other user equipment. Packets avoid the waste of transmission resources.
  • the integrity protection parameter is a medium access control MAC layer certificate, or a packet data convergence protocol PDCP layer certificate, or the PDCP layer is based on The information integrity of the symmetric key checks the MIC domain.
  • the integrity protection of the data packet is implemented in a plurality of ways, so that the integrity protection of the data packet is highly flexible and the implementation manner is simple.
  • a user equipment including: a receiver, a transmitter, a memory, and a processor, wherein the receiver, the transmitter, and the memory are respectively connected to the processor, and the memory is used by Storing processor executable instructions, the processor being configured to:
  • Monitoring the data packet determining whether the data packet is a data packet sent to the relay communication device; if the data packet is a data packet sent to the relay communication device, according to the stored relay communication device Receiving configuration parameters, receiving the data packet. After judging that the monitored data packet is a data packet sent to the relay communication device, the data packet can be received according to the stored receiving configuration parameter, and the user equipment that does not need to send the data packet additionally sends a broadcast data packet. Avoid waste of transmission resources.
  • the processor is configured to: parse the data packet, if a packet header of the data packet carries a specified identifier, Determining that the data packet is a data packet sent to the relay communication device, where the specified identifier is used to indicate that the data packet is a data packet sent to the relay communication device; or, the data packet is Parsing, if the destination address of the data packet includes the specified prefix information, determining that the data packet is a data packet sent to the relay communication device, and the specified prefix information is used to indicate that the fourth data packet is a data packet sent to the relay communication device; or parsing the data packet, if the data packet carries an integrity protection parameter, a relay communication device identifier, a header compression configuration, and the stored relay The receiving configuration parameters of the communication device match, and the data packet is determined to be a data packet sent to the relay communication device. After judging that the monitored data packet is a data packet sent to the relay communication device.
  • the receiving configuration parameter of the relay communication device is carried by a broadcast message of the base station, or the receiving configuration of the relay communication device
  • the parameter is carried by the broadcast message of the relay communication device, or the receiving configuration parameter of the relay communication device is configured by the network management system.
  • the method for notifying the receiving configuration parameter of the relay communication device to the user equipment in a different manner, so that the user equipment knows the receiving configuration parameter of the relay communication device is highly flexible.
  • a base station comprising: a receiver, a transmitter, a memory, and a processor, wherein the receiver, the transmitter, and the memory are respectively connected to the processor, and the memory is used for
  • the storage processor is executable instructions, the processor being configured to:
  • the receiving configuration parameter of the relay communication device includes at least an integrity protection parameter configured by the base station for the relay communication device, and a relay communication device identifier of the relay communication device And a header compression configuration, where the user equipment in the coverage of the base station receives the data packet sent by the other user equipment to the relay communication device according to the receiving configuration parameter of the relay communication device.
  • the configuration parameters of the relay communication device By receiving the configuration parameters of the relay communication device, all user equipments within the coverage of the base station can learn the receiving configuration parameters of the relay communication device, and receive according to the receiving configuration parameter.
  • the unicast data packet sent by the other user equipment to the relay communication device does not need to send a broadcast data packet to the user equipment that sends the data packet, thereby avoiding waste of transmission resources.
  • the integrity protection parameter is a medium access control MAC layer certificate, or a packet data convergence protocol PDCP layer certificate, or the PDCP layer is based on The information integrity of the symmetric key checks the MIC domain.
  • the integrity protection of the data packet is implemented in a plurality of ways, so that the integrity protection of the data packet is highly flexible and the implementation manner is simple.
  • a relay device comprising: a receiver, a transmitter, a memory, and a processor, wherein the receiver, the transmitter, and the memory are respectively connected to the processor, the memory
  • the processor is configured to:
  • the receiving configuration parameter configured by the base station, a fifth data packet sent by the user equipment, where the receiving configuration parameter includes at least an integrity protection parameter configured by the base station for the relay communication device, and relay communication of the relay communication device.
  • the relay communication device identifier is used to indicate that the destination relay communication device of the fifth data packet is the relay communication device; according to the integrity protection parameter and the header compression configuration Processing the fifth data packet to obtain a sixth data packet; and sending the sixth data packet to the base station.
  • the data packet sent by the user equipment is parsed by receiving the configuration parameter, the data packet is sent to the base station, so that other user equipments outside the communication range of the user equipment can also receive the data packet sent by the user equipment, and the user equipment is implemented. data transmission.
  • the processor is configured to perform integrity checking on the fifth data packet according to the integrity protection parameter And performing, after the integrity check is passed, decompressing the header of the fifth data packet according to the header compression configuration to obtain the sixth data packet.
  • the data packet sent by the user equipment is parsed by using the receiving configuration parameter, so that the parsed data packet is sent to the base station, so that other user equipments outside the communication range of the user equipment that sends the data packet can also receive the user equipment.
  • the data packet realizes the data transmission between the user equipment.
  • the integrity protection parameter is a medium access control MAC layer certificate, or a packet data convergence protocol PDCP layer certificate, or the PDCP layer is based on
  • the information integrity of the symmetric key checks the MIC domain.
  • the integrity protection of the data packet is implemented in a plurality of ways, so that the integrity protection of the data packet is highly flexible and the implementation manner is simple.
  • the processor is further configured to: broadcast a configuration parameter configured by the base station, so that the user equipment is aware of the relay communication device After receiving the configuration parameter, the data packet is sent to the relay communication device according to the receiving configuration parameter of the relay communication device.
  • the receiving configuration parameter configured by the broadcast base station enables the user equipment in the communication range to learn the receiving configuration parameter, and the user equipment uses the receiving configuration parameter to receive the data packet sent by other user equipment, and does not need other user equipment to additionally send the broadcast. Packet.
  • the processor is further configured to: determine whether a received power of the fifth data packet is greater than a minimum power threshold; When the received power of the fifth data packet is greater than the minimum power threshold, the processing of the fifth data packet and the subsequent sending step according to the integrity protection parameter and the header compression configuration are performed. By setting the minimum power threshold, the relay communication device is prevented from forwarding the data packet that is too far away from the relay communication device to the base station, thereby causing unnecessary power consumption and transmission resource consumption.
  • FIG. 1 is a block diagram of a data transmission system according to an embodiment of the present invention.
  • FIG. 2 is a flowchart of a data transmission method according to an embodiment of the present invention.
  • FIG. 3 is a structural diagram of a data transmission system according to an embodiment of the present invention.
  • FIG. 4 is a flowchart of a data transmission method according to an embodiment of the present invention.
  • FIG. 5 is a structural diagram of a data transmission system according to an embodiment of the present invention.
  • FIG. 6 is a flowchart of a data transmission method according to an embodiment of the present invention.
  • FIG. 7 is a block diagram of a data transmission apparatus according to an embodiment of the present invention.
  • FIG. 8 is a block diagram of a data transmission apparatus according to an embodiment of the present invention.
  • FIG. 9 is a block diagram of a data transmission apparatus according to an embodiment of the present invention.
  • FIG. 10 is a block diagram of a data transmission apparatus according to an embodiment of the present invention.
  • FIG. 11 is a block diagram of a data transmission apparatus according to an embodiment of the present invention.
  • FIG. 12 is a block diagram of a data transmission apparatus according to an embodiment of the present invention.
  • FIG. 13 is a block diagram of a data transmission apparatus according to an embodiment of the present invention.
  • FIG. 14 is a block diagram of a data transmission apparatus according to an embodiment of the present invention.
  • FIG. 15 is a schematic structural diagram of a base station according to an embodiment of the present disclosure.
  • FIG. 16 is a schematic structural diagram of a relay communication device according to an embodiment of the present invention.
  • FIG. 17 is a schematic structural diagram of a user equipment according to an embodiment of the present invention.
  • FIG. 1 is a schematic structural diagram of a data transmission system according to an embodiment of the present invention.
  • the device includes a user equipment, a relay communication device, a base station, and a service application server, where the data transmission system is used to implement different user equipments. Data transfer between.
  • the user equipment may be a vehicle, a handheld device, etc.
  • the relay communication device may be a communication unit of a relay communication device type such as a roadside unit; an application for data transmission is installed on the user equipment and the relay communication device, and different users
  • Data transmission between devices can be performed in the following two ways:
  • the service application server provides background services for the application.
  • the data packets transmitted between the user equipments are vehicle-to-vehicle ( Vehicle to Vehicle, V2V) data packet;
  • the user equipment sends the data packet to the relay communication device through the D2D link; the relay communication device forwards the received data packet sent by the user equipment to the base station; and the base station delivers the data to the service application on the network side.
  • the server broadcasts data to other user equipments by the service application server to implement indirect data transmission between the user equipments.
  • the user equipment is used to broadcast data packets to other user equipments and relay communication devices.
  • the data packet broadcast by the user equipment may be a V2V data packet; the user equipment has two types of communication.
  • the method sends the data to the relay communication device:
  • the user equipment sends the application layer data to the relay communication device, and the relay communication device can deliver the data packet sent by the received user equipment to the application layer, and the application layer determines whether the data packet will be received.
  • the relay communication device can deliver the data packet sent by the received user equipment to the application layer, and the application layer determines whether the data packet will be received.
  • Performing application layer forwarding if performing application layer forwarding, instructing the relay communication device to add the data packet identifier of the application layer data packet sent by the received user equipment to the communication layer, and sending the communication layer data packet after adding the data packet identifier To the base station; the base station is configured to receive data packets sent by different relay communication devices, and perform the same data packet for the communication layer data packet belonging to the same user equipment.
  • Deduplication here means that a plurality of packets from the same user equipment that have the same identifier (such as the transmission sequence number or frame number mentioned below) received by the device within a certain range, only the first data packet. Transfer to the communication peer.
  • the base station can de-receive the received data packet and send it to the service application server, so that the data packet received by the service application server does not include duplicate data packets, thereby reducing the transmission of resources by the service application server when broadcasting the data packet. Overhead.
  • the manner in which the base station deduplicates the data packet includes de-duplication based on the frame number and de-duplication based on the sequence number.
  • the present invention provides two data transmission methods, as shown in FIG. 2 below. An embodiment corresponding to FIG.
  • the second communication mode is: after the user equipment sends the application layer data packet to the relay communication device, the relay communication device does not process at the application layer, and directly forwards the data to the service application server through the communication layer.
  • the relay communication device can establish a communication layer connection with the base station, and is configured to perform data transmission between the communication layer and the base station when the relay communication device learns that the application layer decides to use the communication layer to forward, and acquires the network to allocate the relay communication device.
  • An Internet Protocol (IP) address for the relay communication device and the service application server to perform data transmission at the communication layer based on the above IP address.
  • the application layer may indicate, in a primitive manner, whether the communication layer uses the application layer to forward. If communication layer forwarding is used, the second communication method is used; otherwise, the first communication method is used.
  • a relay communication device uses an application layer to forward a data packet from a user equipment, and the deduplication mode adopted by the base station is based on a frame number. weight.
  • the method process provided by the embodiment of the present invention includes:
  • the relay communication device receives the first de-duplication configuration information sent by the base station.
  • the deduplication mode adopted by the base station is based on frame number deduplication.
  • configuring the relay communication device includes: allocating relay communication to the relay communication device. Device identification, transmission resources for data transmission, etc.
  • the relay communication device identifier may be a relay communication device identifier (Identifier, ID), an IP address used by the relay communication device, and the like, which are not specifically limited in this embodiment of the present invention.
  • the base station sends the first de-reconfiguration information to the relay communication device, where the first de-duplication configuration information is used to indicate that the de-duplication mode adopted by the base station is frame-based de-duplication;
  • the first de-duplication configuration information may be The base station is sent to the relay communication device in a unicast manner, and the de-duplication mode adopted by the base station of the relay communication device is notified to be de-duplication based on the frame number;
  • the first de-duplication configuration information may be For the 1-bit data, for example, in the data sent by the base station to the relay communication device, the first de-duplication information is represented by 1-bit data, and the content of the 1-bit data may be 0 or 1, which is not performed by the embodiment of the present invention. Specifically limited.
  • the relay communication device After receiving the first de-duplication configuration information sent by the base station, stores the first de-duplication configuration information, and after receiving the first data packet sent by the user equipment, performs the following step 203.
  • the minimum power threshold of the data to be forwarded by the relay communication device may be configured, where the minimum power threshold is used to indicate that the relay communication device only receives the received power.
  • the data packet of the minimum power threshold is sent to the base station.
  • the relay communication device may pre-configure the first de-reconfiguration information in addition to the first de-reconfiguration information through the base station, such as pre-configuring the frame number-based de-duplication when installing the relay communication device.
  • the de-duplication based on the frame number is pre-configured when the relay communication device is initialized, which is not specifically limited in this embodiment of the present invention.
  • the user equipment broadcasts the first data packet.
  • the user equipment broadcasts the first data packet to the surroundings through the D2D link, and the user equipment and the plurality of relay communication devices around the user equipment can monitor the first data packet of the broadcast.
  • the user equipment broadcasts the data packet carrying the user equipment identifier of the user equipment, where the user equipment identifier may be a group ID (group identifier) in Long Term Evolution (LTE) D2D, when the user equipment is a vehicle
  • the user equipment identifier may be a license plate number of the vehicle, etc., which is not specifically limited in this embodiment of the present invention.
  • the user equipment identifier of the user equipment may be carried in the source address of the data packet (such as the source ID in the LTE D2D), which is not specifically limited in this embodiment of the present invention.
  • the relay communication device receives the first data packet sent by the user equipment, adds a first data packet identifier to the first data packet, obtains the second data packet, and sends the second data packet to the base station.
  • any one of the plurality of relay communication devices surrounding the user equipment receives the first data packet sent by the user equipment after listening to the first data packet sent by the user equipment. After receiving the first data packet sent by the user equipment, the relay communication device adds a first data packet identifier to the first data packet to obtain a second data packet.
  • the first data packet carries the user equipment identifier of the user equipment.
  • the first data packet is identified as a frame number of the first data packet; the frame number of the first data packet may be a D2D frame number (DFN) corresponding to the first data packet sending time, or may be the first The system frame number (SFN) of the base station corresponding to the time when the data packet is sent is not specifically limited in this embodiment of the present invention.
  • the frame number of the first data packet may be that the user equipment sends the first to the relay communication device.
  • the data packet carries the frame number when the first data packet is sent to the relay communication device, and the relay communication device obtains the frame number of the first data packet from the base station after receiving the first data packet, and the present invention The embodiment does not specifically limit this.
  • the application installed on the relay communication device may have application layer forwarding capability or may not have application layer forwarding capability.
  • the application layer of the relay communication device may be determined based on the communication layer according to whether the application has application layer forwarding capability. Forwarding is also based on the application layer for forwarding.
  • the relay communication device After receiving the first data packet sent by the user equipment, the relay communication device delivers the first data packet to the application layer; after receiving the first data packet submitted by the relay communication device, the application layer determines, on the relay communication device, If the installed application has application layer forwarding capability, it is decided to forward based on the application layer, and the forwarding layer selection information indicating that the forwarding based on the application layer is forwarded is sent to the relay communication device in a cross-layer primitive manner.
  • the relay communication device After receiving the forwarding layer selection information that is sent by the application layer by using the cross-layer primitive, the relay communication device adds the first data packet identifier to the first data packet and the subsequent sending step, that is, executing And according to receiving the frame number of the first data packet, adding a first data packet identifier to the first data packet, obtaining a second data packet, and subsequently transmitting the second data packet to the base station.
  • the first data packet carries the user equipment identifier of the user equipment that sends the first data packet
  • the second data packet is obtained by adding the first data packet identifier to the first data packet, so the second data packet is the same.
  • the relay communication device may be based on the data content of the first data packet and the user equipment carried in the first data packet. The identifier reorganizes the first data packet, and in the process of reorganization, adds the first data packet identifier to obtain the second data packet.
  • the relay communication device After obtaining the second data packet, the relay communication device sends the second data packet to the base station, and the base station performs data packet deduplication according to the first data packet identifier and the user equipment identifier of the user equipment by using a frame number-based deduplication manner.
  • the relay communication device may send the second data packet to the base station through a wireless interface, such as a Uu interface of the LTE.
  • the received first data packet is sent to the base station, and the first data packet is directly forwarded by the base station to the service application server;
  • the application server deduplicates the received data packet, that is, if the service application server detects two identical data packets within a specified time, the duplicate data packet is deleted, and the deduplicated data packet is broadcasted.
  • Other user equipments can receive data packets broadcast by the service application server to implement data transmission between different user equipments.
  • the station can also configure the minimum power threshold for the relay communication device to forward data. If the minimum power threshold of the relay communication device for forwarding data in the configuration signaling sent by the base station to the relay communication device is configured, the first data is determined after the relay communication device receives the first data packet sent by the user equipment. Whether the received power of the packet is greater than a minimum power threshold; if the received power of the first data packet is greater than the minimum power threshold, performing a first data packet identifier for the first data packet and a subsequent sending step.
  • the base station receives the second data packet sent by the relay communication device, and determines whether the same data packet sent by the same user equipment is repeatedly received. If the base station determines that the second data packet is not repeatedly received by the same user equipment, The same data packet is sent, and the following step 205 is performed.
  • the base station may receive data packets sent by all relay communication devices within its coverage. After receiving the data packet sent by any relay communication device, the base station parses the data packet to determine whether the data packet is the second data packet, that is, whether the data packet includes the user equipment identifier and the first data packet. logo. If the data packet includes the user equipment identifier and the first data packet identifier, it is determined that the data packet is the second data packet. Then, the base station determines, according to the user equipment identifier and the data packet identifier of the data packet received before receiving the second data packet, the user equipment identifier of the second data packet, and the first data packet identifier, whether the same user is repeatedly received.
  • the same data packet sent by the device the detailed process is as follows:
  • the specified time window refers to a period of time with a specified duration
  • the buffer area refers to a storage area used by the buffer base station to receive the data packet sent by the relay communication device.
  • the length of the specified time window or the size of the buffer area may be configured by the base station according to the configuration signaling of the access network or by the Operation Administration and Maintenance (OAM), and may be pre-configured by the base station. Specific restrictions are made.
  • the length of the specified time window may be 2 seconds, 3 seconds, 5 seconds, etc., which is not specifically limited in this embodiment of the present invention.
  • the base station may first obtain the same data packet as the user equipment identifier of the second data packet in the user equipment identifier of the data packet received before receiving the second data packet, and then in the second In the data packet with the same user equipment identifier of the data packet, it is determined whether there is a data packet with the same data packet identifier as the second data packet; if yes, it is determined that the same data packet sent by the same user equipment is repeatedly received; If not, it is determined that the second data packet is not the same number that is repeatedly received and sent by the same user equipment. According to the package.
  • the base station may first obtain, in the data packet identifier of the data packet received before receiving the second data packet, the same data packet identifier as the second data packet, and then the second data packet. In the data packet with the same identifier, it is determined that there is a data packet with the same user equipment identifier as the second data packet, which is not specifically limited in this embodiment of the present invention.
  • the data packet sent by each relay communication device in the coverage of the base station to the base station may not be the second data packet, that is, the sent data packet does not include the user equipment identifier or the first data packet identifier, including the following two Case:
  • the relay communication device does not add a frame number to the first data packet sent by the user equipment before receiving the first de-reconfiguration information sent by the base station, so that the relay communication device sends the data packet to the base station.
  • the first data packet identifier is not included, and is not the second data packet.
  • the application installed by the relay communication device does not have the application layer forwarding capability, and after receiving the first data packet sent by the user equipment, the relay communication device receives the first data packet.
  • the frame number is not added to the first data packet, so that the data packet sent by the relay communication device to the base station does not include the first data packet identifier, and is not the second data packet. If the base station parses the data packet sent by the receiving relay communication device in the communication layer, it determines that the received data packet does not include the user equipment identifier and the first data packet identifier, that is, the received data packet is not the second data.
  • the packet directly forwards the received data packet to the service application server, and the service application server deduplicates the data packet at the application layer, that is, if the service application server detects two identical data packets within a specified time, After the duplicate data packet is deleted, the service application server broadcasts the deduplicated data packet, so that other user equipments can receive the data packet broadcast by the service application server, and implement data transmission between different user equipments.
  • the following is a description of the process of determining whether to repeatedly receive the same data packet sent by the same user equipment in conjunction with the architecture diagram of a data transmission system shown in FIG. 3.
  • the user equipment, the relay communication device 1, and the relay communication device 2, and the base station are included.
  • the relay communication device 1 and the relay communication device 2 can both receive data broadcast by the user equipment.
  • the user equipment identifier of the data packet broadcasted by the user equipment as the vehicle and the user equipment is taken as an example of the license plate number.
  • the user equipment broadcasts the first data packet D1 carrying the user equipment identifier "Kyo A8888" to the surroundings; since the transmission speed of the electromagnetic wave is the speed of light, the relay communication device 1 and the relay communication device 2 receive the frame of D1.
  • the numbers are the same, for example, all of the 275 subframes.
  • the relay communication device 1 and the relay communication device 2 respectively add the first data packet identifier "275" for D1 (ie, receives the frame number of D1), respectively obtaining the second frame. Packet D2 and second packet D3. Thereafter, the relay communication device 1 transmits D2 to the base station, and the relay communication device 2 transmits D3 to the base station.
  • the base station If the base station first receives the D3 sent by the relay communication device 2, the base station firstly specifies the time. Among the data packets received in the window or in the buffer area, the same data packets D4 and D5 as the user equipment identifier of D3 are obtained. As shown in FIG. 2, the user equipment identifier of D4 is “Beijing A8888”, the data packet identifier is “273”, the user equipment identifier of D5 is “Beijing A8888”, and the data packet identifier is “274”. Thereafter, the base station determines whether the packet identification of D4 and D5 is "275".
  • the base station determines that D3 is not the same received data packet sent by the same user equipment, and buffers D3. Then, when the base station receives the D2 sent by the relay communication device 1, in the data packet buffered in the specified time window, the data packets D3, D4, and D5 having the same user equipment identifier as D2 are acquired, and D3, D4, and D3 are determined. Whether the packet identifier of D5 is "275". When the base station finds that the data packet identifier of D3 is "275", it determines that D3 and D2 are the same data packet sent by the same user equipment, that is, the base station repeatedly receives the same data packet sent by the same user equipment.
  • the base station determines that the second data packet is not the same received data packet sent by the same user equipment, the second data packet is forwarded to the service application server, and the service application server receives the data packet.
  • the broadcast is performed so that other user equipments can receive the broadcasted data packets.
  • the base station determines that the same data packet sent by the same user equipment is repeatedly received, the base station performs deduplication on the received data packet. For example, in the example of step 204, the base station determines D3. After D2 is the same data packet sent by the same user equipment, D2 is discarded to implement deduplication of the received data packet. If the base station determines that the second data packet is not the same received data packet sent by the same user equipment, the second data packet is forwarded to the service application server, and the service application server sends the data packet to the service application server through the broadcast or multicast network. Other user equipments enable other user equipments to receive broadcast data packets, thereby realizing data transmission between user equipments. Since the service application server sends the data packet deduplicated by the base station to the user equipment, the overhead of the transmission resource is greatly reduced, and the waste of the transmission resource is avoided.
  • the relay communication device adds the first data packet identifier (the frame number of the data packet) to the first data packet sent by the received user equipment according to the de-reconfiguration information configured by the base station, and then sends the
  • the base station obtains a second data packet including the user equipment identifier of the user equipment that sends the first data packet and the first data packet identifier, and sends the second data packet to the base station; the base station receives the second data packet according to the received The user equipment identifier and the data packet identifier of the data packet, and the user equipment identifier and the data packet identifier of the second data packet, after determining that the second data packet is not the same received data packet sent by the same user equipment,
  • the two data packets are forwarded to the service application server, so that the data packet broadcast by the service application server is the data packet after the base station is deduplicated, thereby greatly reducing the transmission resource.
  • the overhead avoids the waste of transmission resources.
  • FIG. 4 is a flowchart of a data transmission method according to an embodiment of the present invention.
  • a deduplication mode adopted by a base station is a frame number based deduplication.
  • the method process provided by the embodiment of the present invention includes:
  • the relay communication device receives the second de-configuration information sent by the base station.
  • configuring the relay communication device may include: allocating a relay communication device identifier, a transmission resource for performing data transmission, and the like to the relay communication device.
  • the relay communication device identifier may be a relay communication device ID, an IP address, or the like, which is not specifically limited in this embodiment of the present invention.
  • the base station further sends a second de-reconfiguration information to the relay communication device, where the second de-reconfiguration information is used to indicate that the de-duplication mode adopted by the base station at the communication layer is a serial number-based deduplication;
  • the second de-duplication The configuration information may be sent by the base station to the relay communication device in a unicast manner, and the de-duplication mode adopted by the base station of the relay communication device is notified to be de-duplication based on the serial number;
  • the second de-duplication configuration information may be 1-bit data, for example, In the data sent by the base station to the relay communication device, the first de-duplication information is represented by 1-bit data, and the content of the 1-bit data may be 0 or 1, which is not specifically limited in the embodiment of the present invention.
  • the relay communication device After receiving the second de-configuration information sent by the base station, stores the second de-duplication information, and after receiving the third data packet sent by the user equipment, performing the following step 404.
  • the base station is configured to configure a minimum power threshold for the relay communication device to forward data in the configuration signaling sent by the relay communication device, where the minimum power threshold is used to indicate that the relay communication device only receives the received power greater than the The data packet with the minimum power threshold is sent to the base station.
  • the base station broadcasts the second de-duplication information.
  • the user equipment in the coverage of the base station may receive the data broadcast by the base station, and after the base station determines that the serial number-based deduplication mode is adopted in the communication layer, the second de-duplication configuration information is broadcasted to notify the user equipment according to the The deduplication mode indicated by the second de-duplication information sends a data packet to the relay communication device.
  • the user equipment acquires data to be broadcast, generates a third data packet according to the third data packet identifier and the data to be broadcast, and sends the third data packet to the relay communication device.
  • the user equipment before acquiring the data to be broadcast, receives the second de-duplication information broadcasted by the base station, and learns that the de-duplication mode adopted by the base station is a de-duplication based on the sequence number. After that, the user equipment acquires data to be broadcast, and generates a third number according to the third data packet identifier and the data to be broadcasted.
  • the specific process is as follows:
  • the user equipment acquires data to be broadcast, adds a third data packet identifier to the data to be broadcast, and generates a third data packet.
  • the third data packet identifier is a transmission sequence number of the third data packet.
  • the transmission sequence number is a value that is periodically changed by the user equipment within a specified range of values.
  • a sequence number field may be added in the header of the third data packet, where the sequence number field includes the transmission sequence number of the third data packet.
  • the sending sequence number can be implemented by cyclic plus one, for example, starting from 0. Each time a data packet is sent, the new sending sequence number is obtained by adding the previous sending sequence number, and when the sending serial number reaches the maximum serial number threshold. When re-numbering from 0.
  • the sequence number field may be added to the Medium Access Control (MAC) header of the LTE, or the Packet Data Convergence Protocol (PDCP) header, which is not specifically limited in this embodiment of the present invention.
  • MAC Medium Access Control
  • PDCP Packe
  • the user equipment may further carry the user equipment identifier of the user equipment in the third data packet, where the user equipment identifier may be a source ID in the LTE D2D, when the user equipment is a vehicle,
  • the user equipment identifier may be an identifier of the vehicle, etc., which is not specifically limited in this embodiment of the present invention.
  • the user equipment identifier of the user equipment may be carried in the source address of the data packet, which is not specifically limited in this embodiment of the present invention.
  • the user equipment after generating the third data packet, the user equipment sends the third data packet to the relay communication device.
  • the third data packet carries the user equipment identifier of the user equipment and the third data packet identifier. It should be noted that when the user equipment sends the third data packet, it is sent in the form of a broadcast, and the relay communication device and other user equipments around the user equipment can receive the third data packet.
  • the relay communication device receives the third data packet sent by the user equipment, generates a fourth data packet according to the data content of the third data packet, and the third data packet identifier, and sends the fourth data packet to the base station.
  • the relay communication device receives the second deduplication information sent by the base station, and then receives the third data packet when the third data packet broadcast by the user equipment is monitored. Afterwards, the relay communication device generates a fourth data packet according to the data content of the third data packet and the third data packet identifier, that is, the relay communication device packages the data content of the third data packet and the third data packet identifier to generate a fourth data packet.
  • the data packet is sent by the relay communication device to the base station, and the base station uses the serial number-based deduplication mode to perform data packet de-duplication according to the third data packet identifier and the user equipment identifier of the user equipment.
  • the application installed on the relay communication device may have application layer forwarding capability or may not have application layer forwarding capability.
  • the application layer of the relay communication device may be determined based on the communication layer according to whether the application has application layer forwarding capability. Forwarding is also based on the application layer for forwarding.
  • Relay communication device reception After the third data packet sent by the user equipment, the third data packet is delivered to the application layer; after receiving the third data packet submitted by the relay communication device, the application layer determines that the application installed on the relay communication device has an application.
  • the layer forwarding capability determines that the forwarding layer is forwarded based on the application layer, and the forwarding layer selection information indicating that the forwarding layer is forwarded based on the application layer is sent to the relay communication device in a cross-layer primitive manner; the relay communication device passes the cross layer through receiving the application layer.
  • the relay communication device After the indication sent by the primitive mode is based on the forwarding layer selection information forwarded by the application layer, the relay communication device generates a fourth data packet according to the data content of the third data packet and the third data packet identifier, and then delivers the data to the application layer. Forwarding the data packet to the base station through the application layer.
  • the forwarding layer selection information indicating that the communication layer is forwarded based on the communication layer is transmitted to the relay communication device in a cross-layer primitive manner.
  • the relay communication device After receiving the forwarding layer selection information indicating that the forwarding is performed by the communication layer, the relay communication device sends the received third data packet to the base station, and the base station directly forwards the third data packet to the service application server; the service application server The received data packet is deduplicated, that is, if the service application server detects two identical data packets within a specified time, the duplicate data packet is deleted, and the deduplicated data packet is broadcasted, so that other users The device can receive the data packet broadcast by the service application server, and implement data transmission between different user equipments.
  • the relay communication device after receiving the data packet sent by the user equipment, parses the data packet, removes the packet header of the original data packet, and adds a new packet header to generate a new data. Packet, and then send the new packet to the base station.
  • the relay communication device learns that the deduplication mode adopted by the base station is based on the serial number deduplication according to the second deduplication information of the base station, only the data content and the data packet identifier of the received data packet are assembled. A new packet does not remove or change the user device ID contained in the source address and the packet ID contained in the header.
  • the relay communication device can also learn that the base station adopts the serial number-based deduplication by:
  • the second de-duplication configuration information is configured to notify the relay communication device to use the serial number-based deduplication
  • Manner 2 After receiving the data packet sent by the user equipment, if the relay communication device parses that the data packet includes the user equipment identifier and the third data packet identifier, determining that the base station uses the serial number based deduplication;
  • Method 3 The relay communication device performs pre-configuration of the second de-duplication configuration information, for example, during installation.
  • the de-duplication based on the serial number is pre-configured in the case of the communication device, or the de-duplication based on the frame number is pre-configured when the relay communication device is initialized, which is not specifically limited in the embodiment of the present invention.
  • Mode 4 The second de-reconfiguration information is sent by the broadcast, and all the relay communication device and the user equipment can parse the configuration information, and learn that the user equipment of the cell adds the third data packet identifier to the sent data.
  • the base station may also forward the data to the relay communication device.
  • the power threshold is configured. If the base station configures the relay communication device, the minimum power threshold for forwarding the data to the relay communication device is configured, and after the relay communication device receives the third data packet sent by the user equipment, determining the third data. Whether the received power of the packet is greater than a minimum power threshold; if the received power of the third data packet is greater than the minimum power threshold, performing a fourth data packet according to the data content of the third data packet and the third data packet identifier, and Subsequent sending steps.
  • the base station receives the fourth data packet sent by the relay communication device, and determines whether the same data packet sent by the same user equipment is repeatedly received. If the base station determines that the second data packet is not repeatedly received by the same user equipment, The same data packet is sent, and the following step 406 is performed.
  • the base station may receive data packets sent by all relay communication devices within its coverage. After receiving the data packet sent by any relay communication device, the base station parses the data packet, and determines whether the data packet is the fourth data packet, that is, whether the data packet includes the user equipment identifier and the third data. Package identification. If the data packet includes the user equipment identifier and the third data packet identifier, it is determined that the data packet is the fourth data packet. After that, the base station determines, according to the user equipment identifier and the data packet identifier of the data packet received before receiving the fourth data packet, the user equipment identifier and the third data packet identifier of the fourth data packet, whether the same user is repeatedly received.
  • the same data packet sent by the device the detailed process is as follows:
  • the specified time window refers to a period of time with a specified duration
  • the buffer area refers to a storage area used by the buffer base station to receive the data packet sent by the relay communication device.
  • the length of the specified time window or the size of the buffer area may be configured by the base station according to the configuration signaling of the access network, or by the network management system. The configuration is not limited by the embodiment of the present invention.
  • the length of the specified time window may be 2 seconds, 3 seconds, 5 seconds, etc., which is not specifically limited in this embodiment of the present invention.
  • the base station may first obtain the same data packet as the user equipment identifier of the fourth data packet in the user equipment identifier of the data packet received before receiving the fourth data packet, and then determine the fourth data packet.
  • the base station may first obtain the same data packet identifier as the data packet identifier of the fourth data packet in the data packet identifier of the data packet received before receiving the fourth data packet, and then the fourth data packet. In the data packet with the same identifier, it is determined that there is a data packet with the same user equipment identifier as the fourth data packet, which is not specifically limited in this embodiment of the present invention.
  • the base station can de-receive the received data packet and send it to the service application server, so that the data packet received by the service application server does not include duplicate data packets, thereby reducing the transmission of resources by the service application server when broadcasting the data packet. Overhead.
  • the data packet sent by the base station to the relay communication device may not be the fourth data packet, that is, the data packet sent by the relay communication device received by the base station may not include the user equipment identifier or the third data packet identifier.
  • the user equipment does not add a transmission sequence number in the data packet sent to the relay communication device, so that the data of the relay communication device to the base station is The packet does not include the third data packet identifier, and is not the fourth data packet.
  • the application installed by the relay communication device does not have the application layer forwarding capability, and the relay communication device directly receives the data packet sent by the user equipment.
  • the packet header including the third packet identifier is removed, a new packet header is added, and a new data packet not including the third packet identifier is generated, so that the data packet sent by the relay communication device to the base station does not include the third packet identifier, which is not the first Four data packets. If the base station parses the data packet sent by the receiving relay communication device in the communication layer, it determines that the received data packet does not include the user equipment identifier and the third data packet identifier, that is, the received data packet is not the fourth.
  • the data packet directly forwards the received data packet to the service application server, and the service application server deduplicates the data packet at the application layer, that is, if the service application server detects two identical data packets within a specified time, Then duplicate packets are deleted. Afterwards, the service application server broadcasts the deduplicated data packets, so that other user equipments can receive the data packets broadcast by the service application server, and implement data transmission between different user equipments.
  • the ordinary user equipment when the ordinary user equipment receives the third data packet, it is already in the broadcast distribution. It is known in the signaling that all the relay communication devices in the cell adopt the sequence number-based deduplication mode, so that the third data packet identifier in the third data packet header can be identified, and the identifier is removed and submitted to the application layer. In order to know the data content in the received data packet, data transmission between the user equipment is realized.
  • the following describes the process of determining whether to repeatedly receive the same data packet sent by the same user equipment according to the architecture diagram of a data transmission system shown in FIG. 5, as shown in FIG. 5, including user equipment, Relay communication device 1 and relay communication device 2, base station.
  • the relay communication device 1 and the relay communication device 2 can both receive data broadcast by the user equipment.
  • the user equipment of the data packet broadcasted by the user equipment as the vehicle and the user equipment is identified as the license plate number.
  • the user equipment broadcasts the third data carrying the user equipment identifier as "Kyo A8888" and the transmission serial number is "1001".
  • the packet D1; after receiving the third data packet D1, the relay communication device 1 and the relay communication device 2 respectively transmit D10 and D11 to the base station.
  • the base station If the base station first receives the D11 sent by the relay communication device 2, the base station first acquires the data packets D2 and D3 identical to the user equipment identifier of the D11 in the data packet received within the specified time window or in the buffer area. As shown in FIG. 4, the user equipment identifier of D2 is “Beijing A8888”, the data packet identifier is “1009”, the user equipment identifier of D3 is “Beijing A8888”, and the data packet identifier is “1010”. Thereafter, the base station determines whether the packet identification of D2 and D3 is "1001".
  • the base station determines that D11 is not repeatedly receiving the same data packet sent by the same user equipment, and then buffering D11. After receiving the D10 sent by the relay communication device 1, the base station acquires the data packets D11, D2, and D3 that are the same as the user equipment identifier of D10 in the data packet buffered in the specified time window, and determines D11, D2, and Whether the packet identifier of D3 is "1001". When the base station finds that the data packet identifier of D11 is "1001", it is determined that D11 and D10 are the same data packet sent by the same user equipment, that is, the base station repeatedly receives the same data packet sent by the same user equipment.
  • the base station determines that the fourth data packet is not the same received data packet sent by the same user equipment, the second data packet is forwarded to the service application server, and the service application server receives the data packet.
  • the broadcast is performed so that other user equipments can receive the broadcasted data packets.
  • the base station if the base station determines that the same data packet sent by the same user equipment is repeatedly received, the base station performs deduplication on the received data packet. For example, in the example of step 405, the base station determines D10. After D11 is the same data packet sent by the same user equipment, D10 is discarded to implement deduplication of the received data packet. If the base station determines that the fourth data packet is not If the same data packet sent by the same user equipment is repeatedly received, the second data packet is forwarded to the service application server, and the service application server sends the other data packet to other user equipment through the broadcast or multicast network, so that other user equipments Both can receive broadcast data packets, and realize data transmission between user equipments. Since the service application server sends the data packet deduplicated by the base station to the user equipment, the overhead of the transmission resource is greatly reduced, and the waste of the transmission resource is avoided.
  • the user equipment carries the data packet identifier (the transmission sequence number of the data packet) of the data packet in the third data packet sent to the relay communication device according to the de-reconfiguration information broadcasted by the base station; After receiving the third data packet, the relay communication device retains the user equipment identifier and the data packet identifier of the original third data packet when assembling the data packet, generates a fourth data packet, and sends the fourth data packet to Base station.
  • the data packet identifier the transmission sequence number of the data packet
  • the fourth data packet sent by the relay communication device After the fourth data packet sent by the relay communication device received by the base station, the user equipment identifier and the data packet identifier of the data packet received before receiving the fourth data packet, and the user equipment identifier and the data packet identifier of the fourth data packet After determining that the fourth data packet is not the same received data packet sent by the same user equipment, the fourth data packet is forwarded to the service application server, so that the data packet broadcast by the service application server is de-duplicated by the base station.
  • the data packet greatly reduces the overhead of transmission resources and avoids waste of transmission resources.
  • the technical solution adopted is: implementing a link signal between the base station coverage edge and the base station by using a relay node.
  • the packets of the poor user equipment are forwarded to the base station.
  • the user equipment discovers an available relay node through the relay discovery process.
  • a unicast communication connection is established between the user equipment and the relay node, and in the process of establishing the connection, the negotiation of the security key is completed.
  • the user equipment After the user equipment encrypts the data packet by using the negotiated security key, it sends the data packet to the relay node, and the relay node decrypts the received data packet and then forwards the data packet to the base station, and the base station passes the received data packet through the downlink multicast or broadcast.
  • the channel is sent to other user equipments in the cell. Since the unicast connection is established between the user equipment and the relay node, and the sent data packet is encrypted, the other user equipment does not have the key to obtain the data packet, so that the data packet sent by the user equipment has only the corresponding relay node. Can receive.
  • the user equipment In order to enable the other user equipment to receive the data packet of the user equipment, in addition to sending the unicast data packet, the user equipment needs to send the broadcast data packet used in the first two embodiments, so that the air interface resource overhead is increased.
  • FIG. 6 It is a flowchart of a data transmission method provided by an embodiment of the present invention.
  • the method process provided by the embodiment of the present invention includes:
  • the base station broadcasts a receiving configuration parameter for the relay communication device.
  • the unicast data packet sent by the user equipment to the relay communication device can be received not only by the relay communication device but also by other user equipments. Implementations in the art have been improved.
  • the base station allocates a receiving configuration parameter to the relay communication device in addition to the transmission resource for performing data transmission, and the receiving configuration parameter includes at least: an integrity protection parameter, and a relay communication device.
  • the integrity protection parameter is used to indicate that the first user equipment performs data integrity check on the data to be sent
  • the relay communication device identifier of the relay communication device is used to indicate the destination relay communication of the data packet sent by the first user equipment.
  • the device is the relay communication device indicated by the relay communication device identifier, and the data packet is not encrypted.
  • the header compression configuration is used by the first user equipment to compress the packet header (such as IP, UDP header) when generating the data packet.
  • the relay communication device identifier may be a relay communication device ID, an IP address, or the like, which is not specifically limited in this embodiment of the present invention.
  • the integrity protection parameter may be a MAC layer certificate, or a PDCP layer certificate, or a message integrity check (MIC) field based on a symmetric key of the PDCP layer, which is not specifically limited in this embodiment of the present invention.
  • the MIC domain may be an additional domain in the PDCP layer; if the integrity protection parameter is a certificate, the validity of the certificate may be obtained by the relay communication device in advance from the certificate configuration file downloaded by the authentication center, without relay communication The device interacts with the base station.
  • the user equipment can directly perform data transmission with other user equipments through the D2D link, and can also perform indirect data transmission with other user equipments through the relay communication device and the base station, where the user equipment can be a vehicle or a handheld device.
  • the relay communication device may be a communication unit of a relay communication device type, such as a roadside unit, and is not specifically limited in this embodiment of the present invention.
  • the relay communication device and the user equipment are respectively installed with an application for data transmission; when the user equipment performs direct communication with other user equipments, the service application server provides an application service for the service application server.
  • the user equipment may first send the data packet to the relay communication device, and the relay communication device sends the received data packet to the base station, and then The base station forwards the received data packet to the service application server, and finally the service application server broadcasts the received data packet to other user equipment.
  • the relay communication device before receiving the data packet sent by the user equipment, can establish a communication layer connection with the base station, so that the relay communication device can be in communication The layer performs data transmission with the base station.
  • the minimum communication power threshold of the relay communication device may be configured, where the minimum power threshold is used to indicate that the relay communication device only receives the received power.
  • the data packet of the minimum power threshold is sent to the base station.
  • the base station after the receiving configuration parameter is allocated to the relay communication device, the base station broadcasts the receiving configuration parameter for the relay communication device, so that the user equipment in the coverage of the base station can receive the receiving of the relay communication device. And configuring a parameter, and receiving, according to the receiving configuration parameter of the relay communication device, a data packet sent by another user equipment to the relay communication device.
  • the receiving configuration parameter of the relay communication device may be carried by the broadcast message of the relay communication device or configured by the network management system, which is not specifically limited in this embodiment of the present invention.
  • the first user equipment acquires data to be sent, generates a fifth data packet according to the receiving configuration parameter of the relay communication device, and the data to be sent, and sends a fifth data packet.
  • the relay communication device discovery mechanism when the first user equipment enters the coverage of the relay communication device, the relay communication device discovery mechanism performs data interaction with the relay communication device, and determines that the relay communication device is available for relay communication. After the device, a connection process with the relay communication device is initiated, and a connection is established with the relay communication device. In the process of establishing a connection, the certificate for integrity protection, the header compression, and the negotiation of other configurations of the relay communication device are performed, and the relay communication device configures the receiving configuration parameter of the relay communication device for the first user equipment.
  • the connection established between the first user equipment and the relay communication device is a special unicast connection, and the special unicast connection can not only enable the relay communication device to receive the data packet sent by the first user equipment, but also enable the second After determining that the data packet sent by the first user equipment is a data packet sent to the relay communication device, the user equipment receives the data packet.
  • the relay communication device can also assign an IP address to the first user equipment such that the first user equipment and the relay communication device can perform IP relay of data at the communication layer.
  • the first user equipment acquires the data to be sent, and generates a fifth data packet according to the receiving configuration parameter of the relay communication device and the data to be sent. And send the fifth data packet, the specific process is as follows:
  • the first user equipment parses the receiving configuration parameter of the relay communication device, and obtains an integrity protection parameter, a relay communication device identifier of the relay communication device, and a header compression configuration; and then, the data to be sent is signed according to the integrity protection parameter. And adding the negotiated certificate (or adding the MIC domain), compressing the packet header according to the header compression configuration, and using the relay communication device identifier of the relay communication device as The destination address (such as the source ID of the LTE D2D) obtains the fifth data packet; after that, the fifth data packet is sent through a special unicast connection.
  • the packet header of the fifth data packet may further carry a designated identifier, where the specified identifier is used to indicate that the fifth data packet is a data packet sent to the relay communication device, so that the second user equipment can be configured according to the specified
  • the identifier receives the fifth data packet.
  • the specified identifier can be carried in the header of the communication layer data packet, such as the MAC packet header, the PDCP packet header, and the like, which are not specifically limited in this embodiment of the present invention.
  • the relay communication device of the relay communication device may further include designated prefix information, where the specified prefix information is used to indicate that the fifth data packet is a data packet sent to the relay communication device, so that the second The user equipment is capable of receiving the fifth data packet according to the specified prefix information.
  • the second user equipment monitors the data packet, and determines whether the data packet is a data packet sent to the relay communication device. If the data packet is a data packet sent to the relay communication device, performing the following step 604.
  • the second user equipment refers to the user equipment around the first user equipment in the coverage of the base station.
  • the second user equipment may receive the receiving configuration parameter of the relay communication device, and store the receiving configuration parameter of the relay communication device, where
  • the receiving configuration parameters include at least an integrity protection parameter, a relay communication device identity of the relay communication device, and a header compression configuration.
  • the receiving configuration parameter of the relay communication device is configured to receive a data packet sent by the first user equipment to the relay communication device.
  • the second user equipment monitors the data packet sent by the first user equipment at a time, and after the second user equipment monitors the data packet sent by the first user equipment, determines whether the data packet is a data packet sent to the relay communication device, and determines
  • the way is as follows:
  • Manner 1 parsing the data packet, if the packet header of the data packet carries the specified identifier, determining that the data packet is a data packet sent to the relay communication device;
  • Manner 2 parsing the data packet, if the destination address of the data packet includes the specified prefix information, determining that the data packet is a data packet sent to the relay communication device;
  • the third method is to parse the data packet, and if the integrity protection parameter, the relay communication device identifier, and the header compression mode carried by the data packet match the received configuration parameter of the stored relay communication device, determine that the data packet is sent. A packet to the relay communication device.
  • the relay communication device may receive the fifth data packet sent by the user equipment by using a connection established with the user equipment, and process the fifth data packet according to the stored integrity protection parameter and the header compression configuration.
  • Obtaining a sixth data packet comprising: a first step, after receiving the sending by the user equipment After the fifth data packet, the fifth data packet is parsed, and if the relay communication device identifier that is parsed to the fifth data packet is consistent with the identity of the self-relay communication device, or parsed into the fifth data packet, the designated identifier is carried.
  • the relay communication device identifier is consistent with the identity of the relay communication device, and performing the second step, performing integrity verification on the fifth data packet according to the integrity protection parameter, and performing the first
  • the packet header is decompressed according to the header compression configuration to obtain a sixth packet.
  • the sixth data packet is sent to the base station; the base station forwards the received data packet to the service application server, and the service application server sends the received data packet to the second user equipment to implement data transmission between different user equipments.
  • the receiving configuration parameter of the relay communication device may include one or more of an integrity protection parameter, a relay communication device identifier of the relay communication device, and a header compression configuration, when the relay communication device is configured according to the received configuration. After one or more of the parameters successfully parse the data packet, the fifth data packet can be correctly received, and the three steps in the above process do not necessarily exist at the same time.
  • the relay communication device may broadcast the receiving configuration parameter configured by the base station, so that after the user equipment learns the receiving configuration parameter of the relay communication device, the user equipment communicates with the relay communication device according to the receiving configuration parameter of the relay communication device.
  • the device sends a data packet, and receives a data packet sent by the other user equipment to the relay communication device according to the receiving configuration parameter of the relay communication device.
  • the relay communication device determines whether the received power of the fifth data packet is greater than a minimum power threshold; if the received power of the fifth data packet is greater than the minimum
  • the power threshold is performed by processing the fifth data packet according to the integrity protection parameter and the header compression configuration and the subsequent sending step.
  • the second user equipment determines that the monitored data packet is a data packet sent to the relay communication device, receiving the data packet according to the received configuration parameter of the stored relay communication device.
  • the second user equipment determines that the monitored data packet is a data packet sent to the relay communication device, the data packet is received according to the received configuration parameter of the stored relay communication device, and the detailed process is as follows: :
  • the data packet is restored to a data packet that can be parsed by the application layer; after that, the relay communication device delivers the restored data packet to the application layer, and the application layer parses the received data packet to obtain the data in the data packet, thereby completing Data transmission between the first user equipment and the second user equipment.
  • the receiving configuration parameters of the relay communication device acquired by the first user equipment and the second user equipment may be carried by the broadcast message of the base station or by the broadcast message of the relay communication device, or
  • the configuration of the network management system is not specifically limited in this embodiment of the present invention.
  • the base station broadcasts the receiving configuration parameter for the relay communication device; the user equipment receives and stores the received configuration parameter of the received relay communication device, and according to the receiving configuration parameter of the relay communication device, After the communication device sends the data packet, after the other user equipment monitors the data packet, it determines that the data packet is a data packet sent to the relay communication device according to the received configuration parameter of the stored relay communication device, and receives the data packet.
  • the receiving configuration parameter for the relay communication device is broadcast by the base station, so that the data packet sent by the user equipment can be received not only by the destination relay communication device but also by other user equipment, so that the user equipment does not need to additionally send the broadcast data packet. Therefore, the data transmission method reduces the overhead of air interface resources.
  • FIG. 7 is a data transmission apparatus according to an embodiment of the present invention. Referring to FIG. 7, a receiving module 701, a determining module 702, and a sending module 703 are included.
  • the receiving module 701 is connected to the determining module 702, and configured to receive a data packet sent by the relay communication device, where the data packet carries a user equipment identifier and a data packet identifier of the sending data packet, where the data packet identifier is used to uniquely identify the data packet;
  • the determining module 702 is connected to the sending module 703, and is configured to determine, according to the user equipment identifier and the data packet identifier of the data packet received before receiving the data packet, the user equipment identifier and the data packet identifier of the data packet, whether the The same data packet sent by the same user equipment; the sending module 703 is configured to forward the data packet to the service application server if it is determined that the data packet is not the same received data packet sent by the same user equipment.
  • the determining module 702 is configured to determine, in the specified time window or the buffer area, whether the user equipment identifier and the data packet identifier of the data packet received before the data packet are received, and whether the user equipment identifier of the data packet exists.
  • the data packet identifier if the user equipment identifier and the data packet identifier of the data packet exist, it is determined that the same data packet sent by the same user equipment is repeatedly received; wherein the data packet identifier is the frame number of the data packet or the data The serial number of the packet sent.
  • the length of the specified time window or the size of the buffer area is configured by configuration signaling of the access network or by the network management system.
  • the device provided by the embodiment of the present invention performs deduplication processing on the data packet with the same data packet identifier of the same user equipment, and then sends the data packet to the service application server, so that the data packet received by the service application server does not include duplicate data packets. Therefore, when the service application server broadcasts the data packet to the user equipment, the overhead of the transmission resource is greatly reduced, and the waste of the transmission resource is avoided.
  • FIG. 8 is a data transmission apparatus according to an embodiment of the present invention. Referring to FIG. 8, a receiving module 801, a generating module 802, and a sending module 803 are included.
  • the receiving module 801 is connected to the generating module 802, and is configured to receive the first data packet sent by the user equipment, where the first data packet carries the user equipment identifier of the user equipment, and the generating module 802 is connected to the sending module 803, and is configured to be the first data.
  • the packet is added with the first data packet identifier to obtain the second data packet, and the sending module 803 is configured to send the second data packet to the base station, where the base station uses the frame number based on the first data packet identifier and the user equipment identifier of the user equipment.
  • Heavy-weight packet deduplication is connected to the generating module 802, and is configured to receive the first data packet sent by the user equipment, where the first data packet carries the user equipment identifier of the user equipment, and the generating module 802 is connected to the sending module 803, and is configured to be the first data.
  • the packet is added with the first data packet identifier to obtain the second data packet, and the sending module 803 is configured to send the second data packet to the base
  • the first data packet is identified as a frame number of the first data packet.
  • the frame number of the first data packet is the D2D system frame number DFN corresponding to the first data packet sending time, or the frame number of the first data packet is the system frame number of the base station corresponding to the first data packet sending time.
  • the device further includes:
  • the determining module is configured to determine whether the received power of the first data packet is greater than a minimum power threshold; if the received power of the first data packet is greater than a minimum power threshold, performing a first data packet identifier for the first data packet and a subsequent sending step.
  • the receiving module 801 is further configured to receive the de-reconfiguration information sent by the base station, where the de-reconfiguration information is used to indicate the de-duplication mode adopted by the base station, and correspondingly, if the de-reconfiguration information is the first de-duplication configuration information, Then, after receiving the first data packet sent by the user equipment, performing the step of adding a first data packet identifier to the first data packet, where the deduplication manner indicated by the first de-duplication configuration information is a frame number-based deduplication.
  • the receiving module 801 is further configured to: deliver the first data packet to the application layer, and receive forwarding layer selection information that is sent by the application layer by using a cross-layer primitive manner, where the forwarding layer selection information is used to indicate that the application layer is based on the application layer or The communication layer performs forwarding; if the forwarding layer selection information indicates forwarding based on the application layer, performing a first data packet identifier for the first data packet and a subsequent sending step.
  • the device provided by the embodiment of the present invention adds a data packet identifier to the received data packet, so that the base station can de-receive the received data packet according to the data packet identifier, and sends the de-duplicated data packet to the service application server. , greatly reducing the overhead of the service application server transmitting resources when broadcasting data packets to the user equipment, and avoiding waste of transmission resources.
  • FIG. 9 is a data transmission apparatus according to an embodiment of the present invention.
  • the system includes: a receiving module 901, a generating module 902, and a sending module 903.
  • the receiving module 901 is connected to the generating module 902, and is configured to receive a third data packet sent by the user equipment, where the third data packet carries the user equipment identifier of the user equipment and the third data packet identifier, and the third number The packet identifier is added by the user equipment when the data is sent;
  • the generating module 902 is connected to the sending module 903, and configured to generate a fourth data packet according to the data content of the third data packet and the third data packet identifier;
  • the sending module 903 is configured to: The fourth data packet is sent to the base station, and the base station uses the serial number-based deduplication mode to perform data packet de-duplication according to the third data packet identifier and the user equipment identifier of the user equipment.
  • the third data packet is identified as a sending sequence number of the third data packet, and the sending serial number is a value that is regularly changed by the user equipment within a specified numerical range.
  • the device further includes:
  • the determining module is configured to determine whether the received power of the third data packet is greater than a minimum power threshold; and if the received power of the third data packet is greater than the minimum power threshold, perform the step of transmitting the third data packet to the base station.
  • the receiving module 901 is further configured to receive de-reconfiguration information sent by the base station, where the de-reconfiguration information is used to indicate a de-duplication mode adopted by the base station, and correspondingly, if the de-reconfiguration information is the second de-reconfiguration information.
  • the receiving module 901 After receiving the third data packet sent by the user equipment, performing the fourth data packet and the subsequent sending step according to the data content of the third data packet and the third data packet identifier, where the second de-duplication configuration information indicates The heavy mode is the deduplication based on the serial number.
  • the receiving module 901 is further configured to: deliver the third data packet to the application layer, and receive forwarding layer selection information that is sent by the application layer by using a cross-layer primitive manner, where the forwarding layer selection information is used to indicate that the application layer is based on the application layer or The communication layer performs forwarding; if the forwarding layer selection information indicates forwarding based on the application layer, performing a step of generating a fourth data packet and subsequent transmission according to the data content of the third data packet and the third data packet identifier.
  • the device provided by the embodiment of the present invention reorganizes the data packet carrying the data packet identifier sent by the user equipment, and retains the original data packet identifier, so that the base station can deduplicate the data packet according to the received data packet identifier, and
  • the deduplicated data packet is sent to the service application server, which greatly reduces the overhead of the service application server transmitting the resource when broadcasting the data packet to the user equipment, and avoids waste of the transmission resource.
  • FIG. 10 is a data transmission apparatus according to an embodiment of the present invention. Referring to FIG. 10, an acquisition module 1001, a generation module 1002, and a transmission module 1003 are provided.
  • the obtaining module 1001 is connected to the generating module 1002 for acquiring data to be broadcasted.
  • the generating module 1002 and the sending module 1003 are configured to generate a third data packet according to the third data packet identifier and the data to be broadcasted, and the third data.
  • the packet carries the user equipment identifier of the user equipment and the third data packet identifier;
  • the sending module 1003 is configured to send a third data packet to the relay communication device, where the third data packet is sent by the relay communication device to the base station.
  • the third data packet is identified as a sending sequence number of the third data packet, and the sending serial number is a value that is regularly changed by the user equipment within a specified numerical range.
  • the device further includes:
  • a receiving module configured to receive de-reconfiguration information broadcasted by the base station, where the de-reconfiguration information is used to indicate a de-duplication mode adopted by the base station, and correspondingly, when the de-reconfiguration information is the second de-reconfiguration information, perform the third data according to the third data
  • the packet identifier and the data to be broadcast, the step of generating a third data packet, and the deduplication mode indicated by the second de-duplication information is a de-duplication based on the sequence number.
  • the device provided by the embodiment of the present invention adds a data packet identifier to the data to be broadcast, so that after receiving the data packet forwarded by the relay communication device, the base station can de-duplicate the received data packet according to the data packet identifier, and The deduplicated data packet is sent to the service application server, which greatly reduces the overhead of the service application server transmitting the resource when broadcasting the data packet to the user equipment, and avoids waste of the transmission resource.
  • FIG. 11 is a data transmission apparatus according to an embodiment of the present invention.
  • the method includes: an obtaining module 1101, a generating module 1102, and a sending module 1103.
  • the obtaining module 1101 is connected to the generating module 1102 for acquiring data to be sent.
  • the generating module 1102 is connected to the sending module 1103, and configured to generate a fifth data packet according to the receiving configuration parameter of the relay communication device and the data to be sent.
  • the fifth data packet carries the relay communication device identifier of the relay communication device, the relay communication device identifier is used to indicate that the destination relay communication device of the fifth data packet is the relay communication device, and the sending module 1103 is configured to send the fifth data pack.
  • the packet header of the fifth data packet carries a specified identifier, where the identifier is used to indicate that the fifth data packet is a data packet that is sent to the relay communication device, so that the other user equipment can receive the fifth data packet according to the specified identifier; or
  • the relay communication device identifier of the relay communication device includes designated prefix information, and the specified prefix information is used to indicate that the fifth data packet is a data packet sent to the relay communication device, so that other user equipments can receive the fifth data packet according to the specified prefix information.
  • the receiving configuration parameter of the relay communication device includes at least an integrity protection parameter configured by the base station for the relay communication device, a relay communication device identifier of the relay communication device, and a header compression configuration, where the integrity protection parameter is used for sending The data is authenticated by the data integrity, and the relay communication device identifier of the relay communication device is used to indicate that the destination relay communication device of the fourth data packet is a relay communication device, and the header is compressed. Set to compress the header when generating the fourth packet.
  • the integrity protection parameter is a medium access control MAC layer certificate, or a packet data convergence protocol PDCP layer certificate, or a PDCP layer based on a symmetric key information integrity check MIC domain.
  • the apparatus provided by the embodiment of the present invention sends a unicast data packet that satisfies the receiving configuration parameter of the relay communication device to the relay communication device, so that the relay communication device and other user equipments that have received the configuration parameters of the relay communication device are
  • the unicast data packet can be received, and the broadcast data packet is not required to be additionally sent to other user equipments, thereby avoiding waste of transmission resources.
  • FIG. 12 is a data transmission apparatus according to an embodiment of the present invention.
  • the system includes: a monitoring module 1201, a determining module 1202, and a receiving module 1203.
  • the monitoring module 1201 is connected to the determining module 1202 for monitoring data packets; the determining module 1202 is connected to the receiving module 1203 for determining whether the data packet is a data packet sent to the relay communication device; and the receiving module 1203 is configured to use the data packet.
  • the data packet transmitted to the relay communication device the data packet is received according to the received configuration parameter of the stored relay communication device.
  • the determining module 1202 is configured to parse the data packet. If the packet header of the data packet carries the specified identifier, the data packet is determined to be a data packet sent to the relay communication device, and the identifier is used to indicate that the data packet is sent to the data packet.
  • the data packet is a data packet sent to the relay communication device; or, the data packet is parsed, if the data packet carries the integrity protection parameter, the relay communication device identifier, the header compression configuration, and the received relay communication device receiving configuration If the parameters match, it is determined that the data packet is a data packet sent to the relay communication device.
  • the receiving configuration parameter of the relay communication device is carried by the broadcast message of the base station, or the receiving configuration parameter of the relay communication device is carried by the broadcast message of the relay communication device, or the receiving configuration parameter of the relay communication device is configured by the network management system. Configuration.
  • the device provided by the embodiment of the present invention can receive the data packet according to the stored receiving configuration parameter by determining that the monitored data packet is a data packet sent to the relay communication device, and the user equipment that does not need to send the data packet is additional. Send a broadcast packet to avoid wasting transmission resources.
  • FIG. 13 is a data transmission apparatus according to an embodiment of the present invention. Referring to FIG. 13, a transmission module 1301 is included.
  • the sending module 1301 is configured to broadcast a receiving configuration parameter for the relay communication device, where the receiving configuration parameter of the relay communication device includes at least an integrity protection parameter configured by the base station for the relay communication device, and a relay communication of the relay communication device.
  • the device identifier and the header compression configuration are received by the user equipment in the coverage of the base station according to the receiving configuration parameter of the relay communication device, and the data packets sent by the other user equipment to the relay communication device are received.
  • the integrity protection parameter is a medium access control MAC layer certificate, or a packet data convergence protocol PDCP layer certificate, or a PDCP layer based on a symmetric key information integrity check MIC domain.
  • the device provided by the embodiment of the present invention can receive the configuration parameters of the relay communication device by using the receiving configuration parameter of the broadcast communication device, so that all the user equipments in the coverage of the base station can obtain the receiving configuration parameter of the relay communication device, and receive other user equipment according to the receiving configuration parameter.
  • the unicast data packet sent to the relay communication device does not need to send a broadcast data packet to the user equipment that sends the data packet, thereby avoiding waste of transmission resources.
  • FIG. 14 is a data transmission apparatus according to an embodiment of the present invention. Referring to FIG. 14, the method includes: a receiving module 1401, a processing module 1402, and a sending module 1403.
  • the receiving module 1401 is connected to the processing module 1402, and is configured to receive, according to the receiving configuration parameter configured by the base station, a fifth data packet sent by the user equipment, where the receiving configuration parameter includes at least an integrity protection parameter configured by the base station for the relay communication device, Following the relay communication device identification and header compression configuration of the communication device, the relay communication device identifier is used to indicate that the destination relay communication device of the fifth data packet is a relay communication device; the processing module 1402 is coupled to the transmission module 1403 for The integrity protection parameter and the header compression configuration process the fifth data packet to obtain a sixth data packet, and the sending module 1403 is configured to send the sixth data packet to the base station.
  • the processing module 1402 is configured to perform integrity verification on the fifth data packet according to the integrity protection parameter, and decompress the packet header of the fifth data packet according to the header compression configuration after the integrity check is passed. , get the sixth packet.
  • the integrity protection parameter is a medium access control MAC layer certificate, or a packet data convergence protocol PDCP layer certificate, or a PDCP layer based on a symmetric key information integrity check MIC domain.
  • the sending module 1403 is further configured to: broadcast the receiving configuration parameter configured by the base station, so that after the user equipment learns the receiving configuration parameter of the relay communication device, the user equipment sends the data to the relay communication device according to the receiving configuration parameter of the relay communication device. package.
  • the device further includes:
  • the determining module is configured to determine whether the received power of the fifth data packet is greater than a minimum power threshold; if the received power of the fifth data packet is greater than a minimum power threshold, performing processing on the fifth data packet according to the integrity protection parameter and the header compression configuration And subsequent delivery steps.
  • the device provided by the embodiment of the present invention after receiving the configuration parameter, parses the data packet sent by the user equipment, and then sends the data packet to the base station, so that other user equipments outside the communication range of the user equipment can also receive the data packet sent by the user equipment. , realizes data transmission between user equipments.
  • FIG. 15 is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • a receiver 1501, a transmitter 1502, a memory 1503, and a processor 1504 are provided.
  • the receiver 1501, the transmitter 1502, and the memory 1503 are respectively processed.
  • the device 1504 is connected to the memory 1503 for storing processor executable instructions, and the processor 1504 is configured to:
  • Receiving a data packet sent by the relay communication device where the data packet carries a user equipment identifier and a data packet identifier of the sending data packet, where the data packet identifier is used to uniquely identify the data packet; according to the data packet received before receiving the data packet.
  • the user equipment identifier and the data packet identifier, and the user equipment identifier and the data packet identifier of the data packet determine whether the same data packet sent by the same user equipment is repeatedly received; if it is determined that the data packet is not repeatedly received by the same The same data packet sent by the user equipment is forwarded to the service application server.
  • the processor 1504 is further configured to: determine, in the specified time window or the buffer area, whether the user equipment identifier of the data packet received before receiving the data packet and the user equipment of the data packet identifier are present in the data packet identifier The identifier and the data packet identifier; if the user equipment identifier and the data packet identifier of the data packet exist, it is determined that the same data packet sent by the same user equipment is repeatedly received; wherein the data packet identifier is the frame number or data of the data packet. The serial number of the packet sent.
  • the length of the specified time window or the size of the buffer area is configured by configuration signaling of the access network or by the network management system.
  • the base station provided by the embodiment of the present invention has the same data packet identifier for the same user equipment. After the data packet is de-reprocessed, it is sent to the service application server, so that the data packet received by the service application server does not include duplicate data packets, so the service application server greatly reduces the transmission resource when broadcasting the data packet to the user equipment. Overhead, avoiding the waste of transmission resources.
  • FIG. 16 is a schematic structural diagram of a relay communication device according to an embodiment of the present invention.
  • a receiver 1601, a transmitter 1602, a memory 1603, and a processor 1604, a receiver 1601, a transmitter 1602, and a memory 1603 are included.
  • Each is coupled to a processor 1604 for storing processor-executable instructions, and the processor 1604 is configured to:
  • Receiving a first data packet sent by the user equipment where the first data packet carries the user equipment identifier of the user equipment; adding a first data packet identifier to the first data packet to obtain a second data packet; and sending the second data packet to the base station, where The base station performs data packet deduplication according to the first packet identifier and the user equipment identifier of the user equipment by using a frame number-based deduplication manner.
  • the first data packet is identified as a frame number of the first data packet.
  • the frame number of the first data packet is the D2D system frame number DFN corresponding to the first data packet sending time, or the frame number of the first data packet is the system frame number of the base station corresponding to the first data packet sending time.
  • the processor 1604 is further configured to: determine whether the received power of the first data packet is greater than a minimum power threshold; if the received power of the first data packet is greater than a minimum power threshold, perform adding the first data to the first data packet.
  • Package identification and subsequent sending steps are further configured to: determine whether the received power of the first data packet is greater than a minimum power threshold; if the received power of the first data packet is greater than a minimum power threshold, perform adding the first data to the first data packet.
  • the processor 1604 is further configured to: receive de-reconfiguration information sent by the base station, where the de-reconfiguration information is used to indicate a de-duplication mode adopted by the base station, and correspondingly, if the de-reconfiguration information is the first de-reconfiguration information After receiving the first data packet sent by the user equipment, performing the step of adding a first data packet identifier to the first data packet, where the deduplication mode indicated by the first de-duplication configuration information is de-duty based on the frame number.
  • the processor 1604 is further configured to: deliver the first data packet to the application layer, and receive forwarding layer selection information sent by the application layer by using a cross-layer primitive, and the forwarding layer selection information is used to indicate the application layer-based Or the communication layer performs forwarding; if the forwarding layer selection information indicates forwarding based on the application layer, performing a first data packet identifier for the first data packet and a subsequent sending step.
  • the relay communication device provided by the embodiment of the present invention adds a data packet identifier to the received data packet, so that the base station can de-receive the received data packet according to the data packet identifier, and sends the de-duplicated data packet to the data packet.
  • the service application server greatly reduces the overhead of the resource transfer when the service application server broadcasts the data packet to the user equipment, thereby avoiding waste of the transmission resource.
  • An embodiment of the present invention provides a relay communication device, including: a receiver, a transmitter, a memory, and a processor.
  • the receiver, the transmitter, and the memory are respectively connected to the processor, and the memory is configured to store processor executable instructions and process
  • the device is configured to:
  • the third data packet is identified as a sending sequence number of the third data packet, and the sending serial number is a value that is regularly changed by the user equipment within a specified numerical range.
  • the processor is further configured to: determine whether the received power of the third data packet is greater than a minimum power threshold; if the received power of the third data packet is greater than the minimum power threshold, perform the step of sending the third data packet to the base station .
  • the processor is further configured to: receive de-reconfiguration information sent by the base station, where the de-reconfiguration information is used to indicate a de-duplication mode adopted by the base station, and correspondingly, if the de-reconfiguration information is the second de-reconfiguration information After receiving the third data packet sent by the user equipment, performing the fourth data packet and the subsequent sending step according to the data content of the third data packet and the third data packet identifier, where the second de-duplication configuration information indicates The heavy mode is the deduplication based on the serial number.
  • the processor is further configured to: deliver the third data packet to the application layer, and receive forwarding layer selection information sent by the application layer by using a cross-layer primitive, and the forwarding layer selection information is used to indicate that the application layer is based on the application layer or The communication layer performs forwarding; if the forwarding layer selection information indicates forwarding based on the application layer, performing a step of generating a fourth data packet and subsequent transmission according to the data content of the third data packet and the third data packet identifier.
  • the relay communication device provided by the embodiment of the present invention reorganizes the data packet carrying the data packet identifier sent by the user equipment, and retains the original data packet identifier, so that the base station can perform the data packet according to the received data packet identifier.
  • the data packet is sent to the service application server, which greatly reduces the overhead of the resource transfer when the service application server broadcasts the data packet to the user equipment, and avoids waste of the transmission resource.
  • FIG. 17 is a schematic structural diagram of a user equipment according to an embodiment of the present invention.
  • the receiver 1701, the transmitter 1702, and the memory 1703 are respectively connected to a processor 1704.
  • the memory 1703 is configured to store processor-executable instructions, and the processor 1704 is configured. for:
  • the data packet is sent by the relay communication device to the base station.
  • the third data packet is identified as a sending sequence number of the third data packet, and the sending serial number is a value that is regularly changed by the user equipment within a specified numerical range.
  • the processor 1704 is further configured to: receive de-reconfiguration information broadcasted by the base station, where the de-reconfiguration information is used to indicate a de-duplication mode adopted by the base station, and correspondingly, when the de-reconfiguration information is the second de-reconfiguration information. And performing a step of generating a third data packet according to the third data packet identifier and the data to be broadcasted, and the deduplication manner indicated by the second de-duplication information is a de-duplication based on the serial number.
  • the user equipment provided by the embodiment of the present invention adds the data packet identifier to the data to be broadcast, so that after receiving the data packet forwarded by the relay communication device, the base station can de-duplicate the received data packet according to the data packet identifier.
  • the deduplicated data packet is sent to the service application server, which greatly reduces the overhead of the service application server transmitting the resource when broadcasting the data packet to the user equipment, and avoids waste of the transmission resource.
  • An embodiment of the present invention provides a user equipment, including: a receiver, a transmitter, a memory, and a processor.
  • the receiver, the transmitter, and the memory are respectively connected to the processor, the memory is used to store processor executable instructions, and the processor is Configured as:
  • Acquiring data to be sent generating a fifth data packet according to the receiving configuration parameter of the relay communication device and the data to be sent, the fifth data packet carrying the relay communication device identifier of the relay communication device, and the relay communication device identifier is used for
  • the destination relay communication device indicating the fifth data packet is a relay communication device; the fifth data packet is transmitted.
  • the packet header of the fifth data packet carries a specified identifier, where the identifier is used to indicate that the fifth data packet is a data packet that is sent to the relay communication device, so that the other user equipment can receive the fifth data packet according to the specified identifier; or
  • the relay communication device identifier of the relay communication device includes designated prefix information, and the specified prefix information is used to indicate that the fifth data packet is a data packet sent to the relay communication device, so that other user equipments can receive the fifth data packet according to the specified prefix information.
  • the receiving configuration parameter of the relay communication device includes at least the base station configuring the relay communication device
  • the integrity protection parameter, the relay communication device identifier and the header compression configuration of the relay communication device the integrity protection parameter is used for data integrity authentication of the data to be transmitted
  • the relay communication device identifier of the relay communication device is used to indicate
  • the destination relay communication device of the fourth data packet is a relay communication device
  • the header compression configuration is configured to compress the packet header when generating the fourth data packet.
  • the integrity protection parameter is a medium access control MAC layer certificate, or a packet data convergence protocol PDCP layer certificate, or a PDCP layer based on a symmetric key information integrity check MIC domain.
  • the user equipment provided by the embodiment of the present invention sends a unicast data packet satisfying the receiving configuration parameter of the relay communication device to the relay communication device, so that the relay communication device and other user equipments that have the relay communication device receiving the configuration parameters
  • the unicast data packet can be received, and the broadcast data packet is not required to be additionally sent to other user equipments, thereby avoiding waste of transmission resources.
  • An embodiment of the present invention provides a user equipment, including: a receiver, a transmitter, a memory, and a processor.
  • the receiver, the transmitter, and the memory are respectively connected to the processor, the memory is used to store processor executable instructions, and the processor is Configured as:
  • Listening to the data packet determining whether the data packet is a data packet sent to the relay communication device; if the data packet is a data packet sent to the relay communication device, receiving the data packet according to the received configuration parameter of the stored relay communication device.
  • the processor is configured to: parse the data packet, if the packet header of the data packet carries the specified identifier, determine that the data packet is a data packet sent to the relay communication device, and the identifier is used to indicate that the data packet is sent to Relaying the data packet of the communication device; or parsing the data packet; if the destination address of the data packet includes the specified prefix information, determining that the data packet is a data packet sent to the relay communication device, and specifying prefix information for indicating the fourth The data packet is a data packet sent to the relay communication device; or, the data packet is parsed, if the data packet carries the integrity protection parameter, the relay communication device identifier, the header compression configuration, and the received relay communication device receiving configuration If the parameters match, it is determined that the data packet is a data packet sent to the relay communication device.
  • the receiving configuration parameter of the relay communication device is carried by the broadcast message of the base station, or the receiving configuration parameter of the relay communication device is carried by the broadcast message of the relay communication device, or the receiving configuration parameter of the relay communication device is configured by the network management system. Configuration.
  • the user equipment provided by the embodiment of the present invention can receive the data packet according to the stored receiving configuration parameter by determining that the monitored data packet is a data packet sent to the relay communication device, and the user equipment that does not need to send the data packet is additionally required. Send a broadcast packet to avoid wasting transmission resources.
  • An embodiment of the present invention provides a base station, including: a receiver, a transmitter, a memory, and a processor.
  • the receiver, the transmitter, and the memory are respectively connected to the processor, the memory is used to store processor executable instructions, and the processor is configured. for:
  • the receiving configuration parameter of the relay communication device includes at least an integrity protection parameter configured by the base station for the relay communication device, a relay communication device identifier of the relay communication device, and a header compression configuration,
  • the user equipment in the coverage of the base station receives the data packet sent by the other user equipment to the relay communication device according to the receiving configuration parameter of the relay communication device.
  • the integrity protection parameter is a medium access control MAC layer certificate, or a packet data convergence protocol PDCP layer certificate, or a PDCP layer based on a symmetric key information integrity check MIC domain.
  • the base station provided by the embodiment of the present invention can receive the configuration parameters of the relay communication device by using the receiving configuration parameters of the relay communication device, so that all the user equipments in the coverage of the base station can obtain the receiving configuration parameters of the relay communication device, and receive other user equipment according to the receiving configuration parameter.
  • the unicast data packet sent to the relay communication device does not need to send a broadcast data packet to the user equipment that sends the data packet, thereby avoiding waste of transmission resources.
  • An embodiment of the present invention provides a relay communication device, including: a receiver, a transmitter, a memory, and a processor.
  • the receiver, the transmitter, and the memory are respectively connected to the processor, and the memory is configured to store processor executable instructions and process
  • the device is configured to:
  • the receiving configuration parameter configured by the base station
  • the receiving configuration parameter includes at least an integrity protection parameter configured by the base station for the relay communication device, a relay communication device identifier of the relay communication device, and a header compression configuration.
  • the relay communication device identifier is used to indicate that the destination relay communication device of the fifth data packet is a relay communication device; the fifth data packet is processed according to the integrity protection parameter and the header compression configuration to obtain a sixth data packet; Six packets are sent to the base station.
  • the processor is configured to: perform integrity check on the fifth data packet according to the integrity protection parameter, and decompress the packet header of the fifth data packet according to the header compression configuration after the integrity check is passed , get the sixth packet.
  • the integrity protection parameter is a medium access control MAC layer certificate, or a packet data convergence protocol PDCP layer certificate, or a PDCP layer based on a symmetric key information integrity check MIC domain.
  • the processor is further configured to: broadcast the receiving configuration parameter configured by the base station, so that after the user equipment learns the receiving configuration parameter of the relay communication device, according to the receiving configuration parameter of the relay communication device Send a packet to the relay communication device.
  • the processor is further configured to: determine whether the received power of the fifth data packet is greater than a minimum power threshold; if the received power of the fifth data packet is greater than a minimum power threshold, perform performing according to the integrity protection parameter and the header compression configuration The fifth data packet is processed and the subsequent transmission step.
  • the relay device provided by the embodiment of the present invention, after receiving the configuration parameter, parses the data packet sent by the user equipment, and then sends the data packet to the base station, so that other user equipments outside the communication range of the user equipment can also receive the information sent by the user equipment.
  • the data packet realizes data transmission between user equipments.
  • a person skilled in the art may understand that all or part of the steps of implementing the above embodiments may be completed by hardware, or may be instructed by a program to execute related hardware, and the program may be stored in a computer readable storage medium.
  • the storage medium mentioned may be a read only memory, a magnetic disk or an optical disk or the like.

Abstract

本发明实施例提供了一种数据传输方法及装置,涉及通信技术领域,方法包括:基站接收中继通信设备发送的携带用户设备标识和数据包标识的数据包;根据之前接收到的数据包的用户设备标识和数据包标识以及该数据包的用户设备标识和数据包标识,判断是否重复接收到由同一个用户设备发送的同一个数据包;如果判断该数据包不是重复接收到的由同一个用户设备发送的同一个数据包,则将该数据包转发给业务应用服务器。通过对同一用户设备的具有同一数据包标识的数据包进行去重处理后,发送至业务应用服务器,使业务应用服务器将接收到的不重复的数据包下发给用户设备,大大降低了传输资源的开销,避免了传输资源的浪费。

Description

数据传输方法及装置 技术领域
本发明涉及通信技术领域,特别涉及一种数据传输方法及装置。
背景技术
近年来汽车网络越来越受到人们的关注,通过车辆之间直接进行数据传输或者通过路边单元进行数据转发,实现车辆之间的间接数据传输,可使任一车辆能够获知周围其他车辆的行驶状态,进而提高交通的安全性、可靠性,提升交通通行效率。其中,车辆与车辆之间进行数据传输的方式有两种:第一种方式,车辆通过终端到终端(Device to Device,D2D)链路直接将数据发送给其他车辆。第二种方式,车辆先通过D2D链路将数据发送给路边单元(Roadside Unit,RSU),由RSU将数据转发至基站;基站通过下行的多播或广播信道,将接收到的数据发送给覆盖范围内的其他车辆。其中,第二种数据传输方式主要用于车辆之间的D2D链路不好的情况,比如当车辆处在街角时,可以通过预先安装在街角的RSU接收车辆在D2D链路上发送的数据,并将该数据转发给基站,由基站通过下行的多播或广播信道,将接收到的数据发送给覆盖范围内的其他车辆。
现有技术中,在使用第二种方式进行数据传输时,车辆可看作是一个用户设备(User Equipment,UE),通过RSU间接与基站之间进行通信。RSU可通过应用软件接收周围UE广播的数据;当RSU接收到任一UE广播的数据后,通过与基站之间建立的连接,将接收到的数据发送至基站,由基站转发给应用服务器;应用服务器将接收到的数据通过网络广播给其他UE。
在实现本发明的过程中,发明人发现现有技术至少存在以下问题:
如果一个UE广播的数据被多个RSU侦听到,则多个RSU都会将该数据转发给基站,使得基站将接收到的多份重复的数据发送给应用服务器,导致应用服务器在下行的多播或广播信道上发送大量重复的数据,造成了不必要的传输资源浪费。
发明内容
本发明实施例提供了一种数据传输方法及装置,解决了现有技术中因发送大量重复数据而造成的传输资源浪费的问题,所述技术方案如下:
第一方面,提供了一种数据传输方法,所述方法包括:
接收中继通信设备发送的数据包,所述数据包携带发送所述数据包的用户设备标识和数据包标识,所述数据包标识用于唯一标识所述数据包;根据接收所述数据包之前所接收到的数据包的用户设备标识和数据包标识以及所述数据包的用户设备标识和数据包标识,判断是否重复接收到由同一个用户设备发送的同一个数据包;如果判断所述数据包不是重复接收到的由同一个用户设备发送的同一个数据包,则将所述数据包转发给业务应用服务器。通过对同一用户设备的具有同一数据包标识的数据包进行去重处理后,发送至业务应用服务器,使得业务应用服务器接收到的数据包中不包含重复的数据包,因此业务应用服务器在向用户设备广播数据包时,大大降低了传输资源的开销,避免了传输资源的浪费。
结合第一方面,在第一方面的第一种可能的实现方式中,所述根据接收所述数据包之前所接收到的数据包的用户设备标识和数据包标识以及所述数据包的用户设备标识和数据包标识,判断是否重复接收到由同一个用户设备发送的同一个数据包包括:在指定时间窗或者缓存区内,判断所述接收所述数据包之前所接收到的数据包的用户设备标识和数据包标识中是否存在所述数据包的用户设备标识和数据包标识;若存在所述数据包的用户设备标识和数据包标识,则确定重复接收到了由同一个用户设备发送的同一个数据包;其中,数据包标识为数据包的帧号或数据包的发送序列号。通过基站对指定时间窗内或者缓存区域内接收到的数据包进行去重,避免了对过多数据包的判断,避免了资源浪费。
结合第一方面,在第一方面的第二种可能的实现方式中,所述指定时间窗的长度或者缓存区的大小,由接入网络的配置信令或者由网络管理系统进行配置。通过采取配置信令或系统配置过程,提供了灵活的配置方式。
第二方面,提供一种数据传输方法,所述方法包括:
接收用户设备发送的第一数据包,所述第一数据包携带所述用户设备的用户设备标识;为所述第一数据包添加第一数据包标识,得到第二数据包;将所 述第二数据包发送至基站,由所述基站根据第一数据包标识和所述用户设备的用户设备标识采用基于帧号的去重方式进行数据包去重。通过对接收到的数据包添加数据包标识,使得基站能够根据数据包标识对接收到的数据包进行去重,并将去重后的数据包发送至业务应用服务器,大大降低了业务应用服务器在向用户设备广播数据包时传输资源的开销,避免了传输资源的浪费。
结合第二方面,在第二方面的第一种可能的实现方式中,所述第一数据包标识为接收到所述第一数据包的帧号。通过中继通信设备对用户设备发送的数据包添加帧号,使得基站能够根据接收到数据包的数据包标识,简便准确进行数据包的去重,并且在实现数据包去重的同时无需修改用户设备发送数据包的格式。
结合第二方面,在第二方面的第二种可能的实现方式中,所述第一数据包的帧号为所述第一数据包发送时刻对应的D2D系统帧号DFN,或所述第一数据包的帧号为所述第一数据包发送时刻对应的所述基站的系统帧号。通过采用D2D系统帧号或基站的系统帧号作为数据包标识,提供了不同的数据包标识表示方式。
结合第二方面,在第二方面的第三种可能的实现方式中,所述接收用户设备发送的第一数据包之后,所述方法还包括:判断所述第一数据包的接收功率是否大于最小功率门限;若所述第一数据包的接收功率大于所述最小功率门限,则执行为所述第一数据包添加第一数据包标识以及后续发送步骤。通过设置最小功率门限,避免了中继通信设备将实际距离该中继通信设备距离过远的数据包也转发给基站,造成不必要的电量消耗以及传输资源消耗。
结合第二方面,在第二方面的第四种可能的实现方式中,所述接收用户设备发送的第一数据包之前,所述方法还包括:接收所述基站发送的去重配置信息,所述去重配置信息用于指示所述基站采用的去重方式,相应地,若所述去重配置信息为第一去重配置信息,则在接收到所述用户设备发送的所述第一数据包后,执行为所述第一数据包添加第一数据包标识的步骤,所述第一去重配置信息指示的去重方式为基于帧号的去重。通过接收去重配置信息,可实现根据基站的去重方式,向基站发送添加帧号的数据包,使得基站能够根据接收到的数据包的帧号进行去重,并将去重后的数据包发送至业务应用服务器,大大降低了业务应用服务器在向用户设备广播数据包时传输资源的开销,避免了传输资源的浪费。
结合第二方面,在第二方面的第五种可能的实现方式中,所述接收用户设备发送的第一数据包之后,所述方法还包括:将所述第一数据包递交至应用层,并接收由所述应用层通过跨层原语方式发送的转发层选择信息,所述转发层选择信息用于指示基于应用层或通信层进行转发;若所述转发层选择信息指示基于应用层进行转发,则执行为所述第一数据包添加所述第一数据包标识以及后续发送步骤。通过跨层原语方式实现应用层与通信层之间的通信,使得中继通信设备能够获知应用层的转发能力,进而对接收到的数据包添加数据包标识,以便实现基站对接收到数据包的去重。
第三方面,提供一种数据传输方法,所述方法包括:
接收用户设备发送的第三数据包,所述第三数据包携带所述用户设备的用户设备标识和第三数据包标识,所述第三数据包标识由所述用户设备在发送数据时添加;根据所述第三数据包的数据内容和所述第三数据包标识,生成第四数据包,并将所述第四数据包发送至基站,由所述基站根据第三数据包标识和所述用户设备的用户设备标识采用基于序列号的去重方式进行数据包去重。通过对用户设备发送的携带数据包标识的数据包进行重组,保留原有的数据包标识,使得基站能够根据接收到的数据包标识对数据包进行去重,并将去重后的数据包发送至业务应用服务器,大大降低了业务应用服务器在向用户设备广播数据包时传输资源的开销,避免了传输资源的浪费。
结合第三方面,在第三方面的第一种可能的实现方式中,所述第三数据包标识为所述第三数据包的发送序列号,所述发送序列号为所述用户设备维护的在指定数值范围内规律变化的数值。通过采用在指定数值范围内规律变化的数值为数据包添加序列号,实现方式简单,添加的序列号准确。
结合第三方面,在第三方面的第二种可能的实现方式中,所述接收用户设备发送的第三数据包之后,所述方法还包括:判断所述第三数据包的接收功率是否大于最小功率门限;若所述第三数据包的接收功率大于所述最小功率门限,则执行将所述第三数据包发送至所述基站的步骤。通过设置最小功率门限,避免了中继通信设备将实际距离该中继通信设备距离过远的数据包也转发给基站,造成不必要的电量消耗以及传输资源消耗。
结合第三方面,在第三方面的第三种可能的实现方式中,所述接收用户设备发送的第三数据包之前,所述方法还包括:接收所述基站发送的去重配置信 息,所述去重配置信息用于指示所述基站所采用的去重方式,相应地,若所述去重配置信息为第二去重配置信息,则在接收到所述用户设备发送的所述第三数据包后,执行根据所述第三数据包的数据内容和所述第三数据包标识,生成第四数据包以及后续发送步骤,所述第二去重配置信息指示的去重方式为基于序列号的去重。通过去重配置信息获知基站采用的去重方式,进而对数据包添加相应的数据包标识,以便实现基站对接收到的数据包进行去重。
结合第三方面,在第三方面的第四种可能的实现方式中,所述接收用户设备发送的第三数据包之后,所述方法还包括:将所述第三数据包递交至应用层,并接收由所述应用层通过跨层原语方式发送的转发层选择信息,所述转发层选择信息用于指示基于应用层或通信层进行转发;若所述转发层选择信息指示基于应用层进行转发,则执行根据所述第三数据包的数据内容和所述第三数据包标识,生成第四数据包以及后续发送的步骤。通过跨层原语方式实现应用层与通信层之间的通信,使得中继通信设备能够获知应用层的转发能力,进而对接收到的数据包添加数据包标识,以便实现基站对接收到数据包的去重。
第四方面,提供一种数据传输方法,所述方法包括:
获取待广播的数据;根据第三数据包标识和所述待广播的数据,生成第三数据包,所述第三数据包携带用户设备的用户设备标识和第三数据包标识;向中继通信设备发送所述第三数据包,由所述中继通信设备将所述第三数据包发送至基站。通过在待广播数据中添加数据包标识,使得基站接收到由中继通信设备转发的数据包后,能够根据数据包标识对接收到的数据包进行去重,并将去重后的数据包发送至业务应用服务器,大大降低了业务应用服务器在向用户设备广播数据包时传输资源的开销,避免了传输资源的浪费。
结合第四方面,在第四方面的第一种可能的实现方式中,所述第三数据包标识为所述第三数据包的发送序列号,所述发送序列号为所述用户设备维护的在指定数值范围内规律变化的数值。通过采用在指定数值范围内规律变化的数值为数据包添加序列号,实现方式简单,添加的序列号准确。
结合第四方面,在第四方面的第二种可能的实现方式中,所述获取待广播的数据之前,所述方法还包括:接收所述基站广播的去重配置信息,所述去重配置信息用于指示所述基站采用的去重方式,相应地,当所述去重配置信息为第二去重配置信息时,执行根据所述第三数据包标识和所述待广播的数据,生 成所述第三数据包的步骤,所述第二去重配置信息指示的去重方式为基于序列号的去重。通过去重配置信息获知基站采用的去重方式,进而对数据包添加相应的数据包标识,以便实现基站对接收到的数据包进行去重。
第五方面,提供一种数据传输方法,所述方法包括:
获取待发送的数据;根据中继通信设备的接收配置参数和所述待发送的数据,生成第五数据包,所述第五数据包携带所述中继通信设备的中继通信设备标识,所述中继通信设备标识用于指示所述第五数据包的目的中继通信设备为所述中继通信设备;发送所述第五数据包。通过向中继通信设备发送满足中继通信设备的接收配置参数的单播数据包,使得中继通信设备和拥有中继通信设备的接收配置参数的其他用户设备均可接收到该单播数据包,不必再向其他用户设备额外的发送广播数据包,避免了传输资源的浪费。
结合第五方面,在第五方面的第一种可能的实现方式中,所述第五数据包的包头携带指定标识,所述指定标识用于指示所述第五数据包为发送给所述中继通信设备的数据包,使得其他用户设备能够根据所述指定标识接收所述第五数据包;或,所述中继通信设备的中继通信设备标识包含指定前缀信息,所述指定前缀信息用于指示所述第五数据包为发送给所述中继通信设备的数据包,使得其他用户设备能够根据所述指定前缀信息接收所述第五数据包。通过为数据包添加指定标识或指定前缀信息,使得其他用户设备能够根据指定标识或指定前缀信息获知该数据包为发送给中继通信设备的数据包,无需发送该数据包的用户设备额外发送广播的数据包,避免了传输资源的浪费。
结合第五方面,在第五方面的第二种可能的实现方式中,所述中继通信设备的接收配置参数至少包括基站为所述中继通信设备配置的完整性保护参数、所述中继通信设备的中继通信设备标识和头压缩配置,所述完整性保护参数用于对所述待发送的数据进行数据完整性认证,所述中继通信设备的中继通信设备标识用于指示所述第四数据包的目的中继通信设备为所述中继通信设备,所述头压缩配置用于在生成所述第四数据包时对包头进行压缩。通过采用中继通信设备的接收配置参数对数据包进行处理后发送,使得中继通信设备和其他用户设备均可根据接收配置参数接收该数据包,用户设备无需额外的向其他用户设备发送广播的数据包,避免了传输资源的浪费。
结合第五方面,在第五方面的第三种可能的实现方式中,所述完整性保护 参数为媒介访问控制MAC层证书,或分组数据汇聚协议PDCP层证书,或PDCP层基于对称密钥的信息完整性检验MIC域。通过采用多种方式实现对数据包的完整性保护,使得对数据包进行完整性保护的方式灵活度高,且实现方式简单。
第六方面,提供一种数据传输方法,所述方法包括:
监听数据包;判断所述数据包是否为发送给中继通信设备的数据包;若所述数据包为发送给中继通信设备的数据包,则根据存储的所述中继通信设备的接收配置参数,接收所述数据包。通过判断监听到的数据包是发送给中继通信设备的数据包后,便可根据存储的接收配置参数接收该数据包,无需发送该数据包的用户设备额外的发送一份广播的数据包,避免了传输资源的浪费。
结合第六方面,在第六方面的第一种可能的实现方式中,所述判断所述数据包是否为所述其他用户设备发送给中继通信设备的数据包包括:对所述数据包进行解析,若所述数据包的包头携带指定标识,则确定所述数据包为发送给所述中继通信设备的数据包,所述指定标识用于指示所述数据包为发送给所述中继通信设备的数据包;或,对所述数据包进行解析,若所述数据包的目的地址包含指定前缀信息,则确定所述数据包为发送给所述中继通信设备的数据包,所述指定前缀信息用于指示所述第四数据包为发送给所述中继通信设备的数据包;或,对所述数据包进行解析,若所述数据包携带的完整性保护参数、中继通信设备标识、头压缩配置与存储的所述中继通信设备的接收配置参数匹配,则确定所述数据包为发送给所述中继通信设备的数据包。通过判断监听到的数据包是发送给中继通信设备的数据包后,便可根据存储的接收配置参数接收该数据包,无需发送该数据包的用户设备额外的发送一份广播的数据包,避免了传输资源的浪费。
结合第六方面,在第六方面的第二种可能的实现方式中,所述中继通信设备的接收配置参数由基站的广播消息携带,或所述中继通信设备的接收配置参数由中继通信设备的广播消息携带,或所述中继通信设备的接收配置参数由网管系统配置。通过采用不同的方式将中继通信设备的接收配置参数通知给用户设备,使得用户设备获知中继通信设备的接收配置参数的方式灵活度高。
第七方面,提供一种数据传输方法,所述方法包括:
广播针对中继通信设备的接收配置参数,所述中继通信设备的接收配置参数至少包括基站为所述中继通信设备配置的完整性保护参数、所述中继通信设备的中继通信设备标识和头压缩配置,由基站覆盖范围内的用户设备根据所述中继通信设备的接收配置参数,接收其他用户设备向所述中继通信设备发送的数据包。通过广播中继通信设备的接收配置参数,使得基站覆盖范围内的所有用户设备均可获知中继通信设备的接收配置参数,并根据该接收配置参数接收其他用户设备发送给中继通信设备的单播数据包,无需发送该数据包的用户设备额外的发送一份广播的数据包,避免了传输资源的浪费。
结合第七方面,在第七方面的第一种可能的实现方式中,所述完整性保护参数为媒介访问控制MAC层证书,或分组数据汇聚协议PDCP层证书,或PDCP层基于对称密钥的信息完整性检验MIC域。通过采用多种方式实现对数据包的完整性保护,使得对数据包进行完整性保护的方式灵活度高,且实现方式简单。
第八方面,提供一种数据传输方法,所述方法包括:
根据基站配置的接收配置参数,接收用户设备发送的第五数据包,所述接收配置参数至少包括所述基站为中继通信设备配置的完整性保护参数、所述中继通信设备的中继通信设备标识和头压缩配置,所述中继通信设备标识用于指示所述第五数据包的目的中继通信设备为所述中继通信设备;根据所述完整性保护参数和所述头压缩配置对所述第五数据包进行处理,得到第六数据包;将所述第六数据包发送至基站。通过接收配置参数对用户设备发送的数据包进行解析后,发送给基站,使得在该用户设备通信范围外的其他用户设备也可接收到该用户设备发送的数据包,实现了用户设备之间的数据传输。
结合第八方面,在第八方面的第一种可能的实现方式中,所述根据所述完整性保护参数和所述头压缩配置对所述第五数据包进行处理,得到第六数据包包括:根据所述完整性保护参数,对所述第五数据包进行完整性校验,并在完整性校验通过后根据所述头压缩配置,对所述第五数据包的包头进行解压缩,得到所述第六数据包。通过采用接收配置参数对用户设备发送的数据包进行解析,以便将解析后的数据包发送给基站,使得在发送该数据包的用户设备通信范围外的其他用户设备也可接收到该用户设备发送的数据包,实现了用户设备之间的数据传输。
结合第八方面,在第八方面的第二种可能的实现方式中,所述完整性保护参数为媒介访问控制MAC层证书,或分组数据汇聚协议PDCP层证书,或PDCP层基于对称密钥的信息完整性检验MIC域。通过采用多种方式实现对数据包的完整性保护,使得对数据包进行完整性保护的方式灵活度高,且实现方式简单。
结合第八方面,在第八方面的第三种可能的实现方式中,所述方法还包括:广播基站配置的接收配置参数,使得用户设备在获知中继通信设备的接收配置参数后,根据所述中继通信设备的接收配置参数向所述中继通信设备发送数据包。通过广播基站配置的接收配置参数,使得通信范围内的用户设备均可获知该接收配置参数,实现用户设备利用该接收配置参数,接收其他用户设备发送的数据包,无需其他用户设备额外地发送广播的数据包。
结合第八方面,在第八方面的第四种可能的实现方式中,所述接收用户设备发送的第五数据包之后,所述方法还包括:判断所述第五数据包的接收功率是否大于最小功率门限;若所述第五数据包的接收功率大于所述最小功率门限,则执行根据所述完整性保护参数和所述头压缩配置对所述第五数据包进行处理以及后续发送步骤。通过设置最小功率门限,避免了中继通信设备将实际距离该中继通信设备距离过远的数据包也转发给基站,造成不必要的电量消耗以及传输资源消耗。
第九方面,提供一种数据传输装置,所述装置包括多个功能模块用于执行上述第一方面所述的方法。在一种可能的实现方式中,所述装置还包括其他功能模块用于执行上述第一方面中多种可能的实现方式所述的方法。通过对同一用户设备的具有同一数据包标识的数据包进行去重处理后,发送至业务应用服务器,使得业务应用服务器接收到的数据包中不包含重复的数据包,因此业务应用服务器在向用户设备广播数据包时,大大降低了传输资源的开销,避免了传输资源的浪费。
第十方面,提供一种数据传输装置,所述装置包括多个功能模块用于执行上述第二方面所述的方法。在一种可能的实现方式中,所述装置还包括其他功能模块用于执行上述第二方面中多种可能的实现方式所述的方法。通过对接收到的数据包添加数据包标识,使得基站能够根据数据包标识对接收到的数据包 进行去重,并将去重后的数据包发送至业务应用服务器,大大降低了业务应用服务器在向用户设备广播数据包时传输资源的开销,避免了传输资源的浪费。
第十一方面,提供一种数据传输装置,所述装置包括多个功能模块用于执行上述第三方面所述的方法。在一种可能的实现方式中,所述装置还包括其他功能模块用于执行上述第三方面中多种可能的实现方式所述的方法。通过对用户设备发送的携带数据包标识的数据包进行重组,保留原有的数据包标识,使得基站能够根据接收到的数据包标识对数据包进行去重,并将去重后的数据包发送至业务应用服务器,大大降低了业务应用服务器在向用户设备广播数据包时传输资源的开销,避免了传输资源的浪费。
第十二方面,提供一种数据传输装置,所述装置包括多个功能模块用于执行上述第四方面所述的方法。在一种可能的实现方式中,所述装置还包括其他功能模块用于执行上述第四方面中多种可能的实现方式所述的方法。通过在待广播数据中添加数据包标识,使得基站接收到由中继通信设备转发的数据包后,能够根据数据包标识对接收到的数据包进行去重,并将去重后的数据包发送至业务应用服务器,大大降低了业务应用服务器在向用户设备广播数据包时传输资源的开销,避免了传输资源的浪费。
第十三方面,提供一种数据传输装置,所述装置包括多个功能模块用于执行上述第五方面所述的方法。在一种可能的实现方式中,所述装置还包括其他功能模块用于执行上述第五方面中多种可能的实现方式所述的方法。通过向中继通信设备发送满足中继通信设备的接收配置参数的单播数据包,使得中继通信设备和拥有中继通信设备的接收配置参数的其他用户设备均可接收到该单播数据包,不必再向其他用户设备额外的发送广播数据包,避免了传输资源的浪费。
第十四方面,提供一种数据传输装置,所述装置包括多个功能模块用于执行上述第六方面所述的方法。在一种可能的实现方式中,所述装置还包括其他功能模块用于执行上述第六方面中多种可能的实现方式所述的方法。通过判断监听到的数据包是发送给中继通信设备的数据包后,便可根据存储的接收配置 参数接收该数据包,无需发送该数据包的用户设备额外的发送一份广播的数据包,避免了传输资源的浪费。
第十五方面,提供一种数据传输装置,所述装置包括多个功能模块用于执行上述第七方面所述的方法。在一种可能的实现方式中,所述装置还包括其他功能模块用于执行上述第七方面中多种可能的实现方式所述的方法。通过广播中继通信设备的接收配置参数,使得基站覆盖范围内的所有用户设备均可获知中继通信设备的接收配置参数,并根据该接收配置参数接收其他用户设备发送给中继通信设备的单播数据包,无需发送该数据包的用户设备额外的发送一份广播的数据包,避免了传输资源的浪费。
第十六方面,提供一种数据传输装置,所述装置包括多个功能模块用于执行上述第八方面所述的方法。在一种可能的实现方式中,所述装置还包括其他功能模块用于执行上述第八方面中多种可能的实现方式所述的方法。通过接收配置参数对用户设备发送的数据包进行解析后,发送给基站,使得在该用户设备通信范围外的其他用户设备也可接收到该用户设备发送的数据包,实现了用户设备之间的数据传输。
第十七方面,提供了一种基站,包括:接收器、发射器、存储器和处理器,所述接收器、所述发射器和所述存储器分别与所述处理器连接,所述存储器用于存储处理器可执行指令,所述处理器被配置为:
接收中继通信设备发送的数据包,所述数据包携带发送所述数据包的用户设备标识和数据包标识,所述数据包标识用于唯一标识所述数据包;根据接收所述数据包之前所接收到的数据包的用户设备标识和数据包标识以及所述数据包的用户设备标识和数据包标识,判断是否重复接收到由同一个用户设备发送的同一个数据包;如果判断所述数据包不是重复接收到的由同一个用户设备发送的同一个数据包,则将所述数据包转发给业务应用服务器。通过对同一用户设备的具有同一数据包标识的数据包进行去重处理后,发送至业务应用服务器,使得业务应用服务器接收到的数据包中不包含重复的数据包,因此业务应用服务器在向用户设备广播数据包时,大大降低了传输资源的开销,避免了传输资源的浪费。
结合第十七方面,在第十七方面的第一种可能的实现方式中,所述处理器还被配置为:在指定时间窗或者缓存区内,判断所述接收所述数据包之前所接收到的数据包的用户设备标识和数据包标识中是否存在所述数据包的用户设备标识和数据包标识;若存在所述数据包的用户设备标识和数据包标识,则确定重复接收到了由同一个用户设备发送的同一个数据包;其中,数据包标识为数据包的帧号或数据包的发送序列号。通过基站对指定时间窗内或者缓存区域内接收到的数据包进行去重,避免了对过多数据包的判断,避免了资源浪费。
结合第十七方面,在第十七方面的第二种可能的实现方式中,所述指定时间窗的长度或者缓存区的大小,由接入网络的配置信令或者由网络管理系统进行配置。通过采取配置信令或系统配置过程,提供了灵活的配置方式。
第十八方面,提供一种中继通信设备,包括:接收器、发射器、存储器和处理器,所述接收器、所述发射器和所述存储器分别与所述处理器连接,所述存储器用于存储处理器可执行指令,所述处理器被配置为:
接收用户设备发送的第一数据包,所述第一数据包携带所述用户设备的用户设备标识;为所述第一数据包添加第一数据包标识,得到第二数据包;将所述第二数据包发送至基站,由所述基站根据第一数据包标识和所述用户设备的用户设备标识采用基于帧号的去重方式进行数据包去重。通过对接收到的数据包添加数据包标识,使得基站能够根据数据包标识对接收到的数据包进行去重,并将去重后的数据包发送至业务应用服务器,大大降低了业务应用服务器在向用户设备广播数据包时传输资源的开销,避免了传输资源的浪费。
结合第十八方面,在第十八方面的第一种可能的实现方式中,所述第一数据包标识为接收到所述第一数据包的帧号。通过中继通信设备对用户设备发送的数据包添加帧号,使得基站能够根据接收到数据包的数据包标识,简便准确进行数据包的去重,并且在实现数据包去重的同时无需修改用户设备发送数据包的格式。
结合第十八方面,在第十八方面的第二种可能的实现方式中,所述第一数据包的帧号为所述第一数据包发送时刻对应的D2D系统帧号DFN,或所述第一数据包的帧号为所述第一数据包发送时刻对应的所述基站的系统帧号。通过采用D2D系统帧号或基站的系统帧号作为数据包标识,提供了不同的数据包标识表示方式。
结合第十八方面,在第十八方面的第三种可能的实现方式中,所述处理器还被配置为:判断所述第一数据包的接收功率是否大于最小功率门限;若所述第一数据包的接收功率大于所述最小功率门限,则执行为所述第一数据包添加第一数据包标识以及后续发送步骤。通过设置最小功率门限,避免了中继通信设备将实际距离该中继通信设备距离过远的数据包也转发给基站,造成不必要的电量消耗以及传输资源消耗。
结合第十八方面,在第十八方面的第四种可能的实现方式中,所述处理器还被配置为:接收所述基站发送的去重配置信息,所述去重配置信息用于指示所述基站采用的去重方式,相应地,若所述去重配置信息为第一去重配置信息,则在接收到所述用户设备发送的所述第一数据包后,执行为所述第一数据包添加第一数据包标识的步骤,所述第一去重配置信息指示的去重方式为基于帧号的去重。通过接收去重配置信息,可实现根据基站的去重方式,向基站发送添加帧号的数据包,使得基站能够根据接收到的数据包的帧号进行去重,并将去重后的数据包发送至业务应用服务器,大大降低了业务应用服务器在向用户设备广播数据包时传输资源的开销,避免了传输资源的浪费。
结合第十八方面,在第十八方面的第五种可能的实现方式中,所述处理器还被配置为:将所述第一数据包递交至应用层,并接收由所述应用层通过跨层原语方式发送的转发层选择信息,所述转发层选择信息用于指示基于应用层或通信层进行转发;若所述转发层选择信息指示基于应用层进行转发,则执行为所述第一数据包添加所述第一数据包标识以及后续发送步骤。通过跨层原语方式实现应用层与通信层之间的通信,使得中继通信设备能够获知应用层的转发能力,进而对接收到的数据包添加数据包标识,以便实现基站对接收到数据包的去重。
第十九方面,提供一种中继通信设备,包括:接收器、发射器、存储器和处理器,所述接收器、所述发射器和所述存储器分别与所述处理器连接,所述存储器用于存储处理器可执行指令,所述处理器被配置为:
接收用户设备发送的第三数据包,所述第三数据包携带所述用户设备的用户设备标识和第三数据包标识,所述第三数据包标识由所述用户设备在发送数据时添加;根据所述第三数据包的数据内容和所述第三数据包标识,生成第四数据包,并将所述第四数据包发送至基站,由所述基站根据第三数据包标识和 所述用户设备的用户设备标识采用基于序列号的去重方式进行数据包去重。通过对用户设备发送的携带数据包标识的数据包进行重组,保留原有的数据包标识,使得基站能够根据接收到的数据包标识对数据包进行去重,并将去重后的数据包发送至业务应用服务器,大大降低了业务应用服务器在向用户设备广播数据包时传输资源的开销,避免了传输资源的浪费。
结合第十九方面,在第十九方面的第一种可能的实现方式中,所述第三数据包标识为所述第三数据包的发送序列号,所述发送序列号为所述用户设备维护的在指定数值范围内规律变化的数值。通过采用在指定数值范围内规律变化的数值为数据包添加序列号,实现方式简单,添加的序列号准确。
结合第十九方面,在第十九方面的第二种可能的实现方式中,所述处理器还被配置为:判断所述第三数据包的接收功率是否大于最小功率门限;若所述第三数据包的接收功率大于所述最小功率门限,则执行将所述第三数据包发送至所述基站的步骤。通过设置最小功率门限,避免了中继通信设备将实际距离该中继通信设备距离过远的数据包也转发给基站,造成不必要的电量消耗以及传输资源消耗。
结合第十九方面,在第十九方面的第三种可能的实现方式中,所述处理器还被配置为:接收所述基站发送的去重配置信息,所述去重配置信息用于指示所述基站所采用的去重方式,相应地,若所述去重配置信息为第二去重配置信息,则在接收到所述用户设备发送的所述第三数据包后,执行根据所述第三数据包的数据内容和所述第三数据包标识,生成第四数据包以及后续发送步骤,所述第二去重配置信息指示的去重方式为基于序列号的去重。通过去重配置信息获知基站采用的去重方式,进而对数据包添加相应的数据包标识,以便实现基站对接收到的数据包进行去重。
结合第十九方面,在第十九方面的第四种可能的实现方式中,所述处理器还被配置为:将所述第三数据包递交至应用层,并接收由所述应用层通过跨层原语方式发送的转发层选择信息,所述转发层选择信息用于指示基于应用层或通信层进行转发;若所述转发层选择信息指示基于应用层进行转发,则执行根据所述第三数据包的数据内容和所述第三数据包标识,生成第四数据包以及后续发送的步骤。通过跨层原语方式实现应用层与通信层之间的通信,使得中继通信设备能够获知应用层的转发能力,进而对接收到的数据包添加数据包标识,以便实现基站对接收到数据包的去重。
第二十方面,提供一种用户设备,包括:接收器、发射器、存储器和处理器,所述接收器、所述发射器和所述存储器分别与所述处理器连接,所述存储器用于存储处理器可执行指令,所述处理器被配置为:
获取待广播的数据;根据第三数据包标识和所述待广播的数据,生成第三数据包,所述第三数据包携带用户设备的用户设备标识和第三数据包标识;向中继通信设备发送所述第三数据包,由所述中继通信设备将所述第三数据包发送至基站。通过在待广播数据中添加数据包标识,使得基站接收到由中继通信设备转发的数据包后,能够根据数据包标识对接收到的数据包进行去重,并将去重后的数据包发送至业务应用服务器,大大降低了业务应用服务器在向用户设备广播数据包时传输资源的开销,避免了传输资源的浪费。
结合第二十方面,在第二十方面的第一种可能的实现方式中,所述第三数据包标识为所述第三数据包的发送序列号,所述发送序列号为所述用户设备维护的在指定数值范围内规律变化的数值。通过采用在指定数值范围内规律变化的数值为数据包添加序列号,实现方式简单,添加的序列号准确。
结合第二十方面,在第二十方面的第二种可能的实现方式中,所述处理器还被配置为:接收所述基站广播的去重配置信息,所述去重配置信息用于指示所述基站采用的去重方式,相应地,当所述去重配置信息为第二去重配置信息时,执行根据所述第三数据包标识和所述待广播的数据,生成所述第三数据包的步骤,所述第二去重配置信息指示的去重方式为基于序列号的去重。通过去重配置信息获知基站采用的去重方式,进而对数据包添加相应的数据包标识,以便实现基站对接收到的数据包进行去重。
第二十一方面,提供一种用户设备包括:接收器、发射器、存储器和处理器,所述接收器、所述发射器和所述存储器分别与所述处理器连接,所述存储器用于存储处理器可执行指令,所述处理器被配置为:
获取待发送的数据;根据中继通信设备的接收配置参数和所述待发送的数据,生成第五数据包,所述第五数据包携带所述中继通信设备的中继通信设备标识,所述中继通信设备标识用于指示所述第五数据包的目的中继通信设备为所述中继通信设备;发送所述第五数据包。通过向中继通信设备发送满足中继通信设备的接收配置参数的单播数据包,使得中继通信设备和拥有中继通信设 备的接收配置参数的其他用户设备均可接收到该单播数据包,不必再向其他用户设备额外的发送广播数据包,避免了传输资源的浪费。
结合第二十一方面,在第二十一方面的第一种可能的实现方式中,所述第五数据包的包头携带指定标识,所述指定标识用于指示所述第五数据包为发送给所述中继通信设备的数据包,使得其他用户设备能够根据所述指定标识接收所述第五数据包;或,所述中继通信设备的中继通信设备标识包含指定前缀信息,所述指定前缀信息用于指示所述第五数据包为发送给所述中继通信设备的数据包,使得其他用户设备能够根据所述指定前缀信息接收所述第五数据包。通过为数据包添加指定标识或指定前缀信息,使得其他用户设备能够根据指定标识或指定前缀信息获知该数据包为发送给中继通信设备的数据包,无需发送该数据包的用户设备额外发送广播的数据包,避免了传输资源的浪费。
结合第二十一方面,在第二十一方面的第二种可能的实现方式中,所述中继通信设备的接收配置参数至少包括基站为所述中继通信设备配置的完整性保护参数、所述中继通信设备的中继通信设备标识和头压缩配置,所述完整性保护参数用于对所述待发送的数据进行数据完整性认证,所述中继通信设备的中继通信设备标识用于指示所述第四数据包的目的中继通信设备为所述中继通信设备,所述头压缩配置用于在生成所述第四数据包时对包头进行压缩。通过采用中继通信设备的接收配置参数对数据包进行处理后发送,使得中继通信设备和其他用户设备均可根据接收配置参数接收该数据包,用户设备无需额外的向其他用户设备发送广播的数据包,避免了传输资源的浪费。
结合第二十一方面,在第二十一方面的第三种可能的实现方式中,所述完整性保护参数为媒介访问控制MAC层证书,或分组数据汇聚协议PDCP层证书,或PDCP层基于对称密钥的信息完整性检验MIC域。通过采用多种方式实现对数据包的完整性保护,使得对数据包进行完整性保护的方式灵活度高,且实现方式简单。
第二十二方面,提供一种用户设备,包括:接收器、发射器、存储器和处理器,所述接收器、所述发射器和所述存储器分别与所述处理器连接,所述存储器用于存储处理器可执行指令,所述处理器被配置为:
监听数据包;判断所述数据包是否为发送给中继通信设备的数据包;若所述数据包为发送给中继通信设备的数据包,则根据存储的所述中继通信设备的 接收配置参数,接收所述数据包。通过判断监听到的数据包是发送给中继通信设备的数据包后,便可根据存储的接收配置参数接收该数据包,无需发送该数据包的用户设备额外的发送一份广播的数据包,避免了传输资源的浪费。
结合第二十二方面,在第二十二方面的第一种可能的实现方式中,所述处理器被配置为:对所述数据包进行解析,若所述数据包的包头携带指定标识,则确定所述数据包为发送给所述中继通信设备的数据包,所述指定标识用于指示所述数据包为发送给所述中继通信设备的数据包;或,对所述数据包进行解析,若所述数据包的目的地址包含指定前缀信息,则确定所述数据包为发送给所述中继通信设备的数据包,所述指定前缀信息用于指示所述第四数据包为发送给所述中继通信设备的数据包;或,对所述数据包进行解析,若所述数据包携带的完整性保护参数、中继通信设备标识、头压缩配置与存储的所述中继通信设备的接收配置参数匹配,则确定所述数据包为发送给所述中继通信设备的数据包。通过判断监听到的数据包是发送给中继通信设备的数据包后,便可根据存储的接收配置参数接收该数据包,无需发送该数据包的用户设备额外的发送一份广播的数据包,避免了传输资源的浪费。
结合第二十二方面,在第二十二方面的第二种可能的实现方式中,所述中继通信设备的接收配置参数由基站的广播消息携带,或所述中继通信设备的接收配置参数由中继通信设备的广播消息携带,或所述中继通信设备的接收配置参数由网管系统配置。通过采用不同的方式将中继通信设备的接收配置参数通知给用户设备,使得用户设备获知中继通信设备的接收配置参数的方式灵活度高。
第二十三方面,提供一种基站,包括:接收器、发射器、存储器和处理器,所述接收器、所述发射器和所述存储器分别与所述处理器连接,所述存储器用于存储处理器可执行指令,所述处理器被配置为:
广播针对中继通信设备的接收配置参数,所述中继通信设备的接收配置参数至少包括基站为所述中继通信设备配置的完整性保护参数、所述中继通信设备的中继通信设备标识和头压缩配置,由基站覆盖范围内的用户设备根据所述中继通信设备的接收配置参数,接收其他用户设备向所述中继通信设备发送的数据包。通过广播中继通信设备的接收配置参数,使得基站覆盖范围内的所有用户设备均可获知中继通信设备的接收配置参数,并根据该接收配置参数接收 其他用户设备发送给中继通信设备的单播数据包,无需发送该数据包的用户设备额外的发送一份广播的数据包,避免了传输资源的浪费。
结合第二十三方面,在第二十三方面的第一种可能的实现方式中,所述完整性保护参数为媒介访问控制MAC层证书,或分组数据汇聚协议PDCP层证书,或PDCP层基于对称密钥的信息完整性检验MIC域。通过采用多种方式实现对数据包的完整性保护,使得对数据包进行完整性保护的方式灵活度高,且实现方式简单。
第二十四方面,提供一种中继设备,包括:接收器、发射器、存储器和处理器,所述接收器、所述发射器和所述存储器分别与所述处理器连接,所述存储器用于存储处理器可执行指令,所述处理器被配置为:
根据基站配置的接收配置参数,接收用户设备发送的第五数据包,所述接收配置参数至少包括所述基站为中继通信设备配置的完整性保护参数、所述中继通信设备的中继通信设备标识和头压缩配置,所述中继通信设备标识用于指示所述第五数据包的目的中继通信设备为所述中继通信设备;根据所述完整性保护参数和所述头压缩配置对所述第五数据包进行处理,得到第六数据包;将所述第六数据包发送至基站。通过接收配置参数对用户设备发送的数据包进行解析后,发送给基站,使得在该用户设备通信范围外的其他用户设备也可接收到该用户设备发送的数据包,实现了用户设备之间的数据传输。
结合第二十四方面,在第二十四方面的第一种可能的实现方式中,所述处理器被配置为:根据所述完整性保护参数,对所述第五数据包进行完整性校验,并在完整性校验通过后根据所述头压缩配置,对所述第五数据包的包头进行解压缩,得到所述第六数据包。通过采用接收配置参数对用户设备发送的数据包进行解析,以便将解析后的数据包发送给基站,使得在发送该数据包的用户设备通信范围外的其他用户设备也可接收到该用户设备发送的数据包,实现了用户设备之间的数据传输。
结合第二十四方面,在第二十四方面的第二种可能的实现方式中,所述完整性保护参数为媒介访问控制MAC层证书,或分组数据汇聚协议PDCP层证书,或PDCP层基于对称密钥的信息完整性检验MIC域。通过采用多种方式实现对数据包的完整性保护,使得对数据包进行完整性保护的方式灵活度高,且实现方式简单。
结合第二十四方面,在第二十四方面的第三种可能的实现方式中,所述处理器还被配置为:广播基站配置的接收配置参数,使得用户设备在获知中继通信设备的接收配置参数后,根据所述中继通信设备的接收配置参数向所述中继通信设备发送数据包。通过广播基站配置的接收配置参数,使得通信范围内的用户设备均可获知该接收配置参数,实现用户设备利用该接收配置参数,接收其他用户设备发送的数据包,无需其他用户设备额外地发送广播的数据包。
结合第二十四方面,在第二十四方面的第四种可能的实现方式中,所述处理器还被配置为:判断所述第五数据包的接收功率是否大于最小功率门限;若所述第五数据包的接收功率大于所述最小功率门限,则执行根据所述完整性保护参数和所述头压缩配置对所述第五数据包进行处理以及后续发送步骤。通过设置最小功率门限,避免了中继通信设备将实际距离该中继通信设备距离过远的数据包也转发给基站,造成不必要的电量消耗以及传输资源消耗。
附图说明
为了更清楚地说明本发明实施例中的技术方案,下面将对实施例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发明的一些实施例,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是本发明实施例提供的一种数据传输系统的架构图;
图2是本发明实施例提供的一种数据传输方法的流程图;
图3是本发明实施例提供的一种数据传输系统的架构图;
图4是本发明实施例提供的一种数据传输方法的流程图;
图5是本发明实施例提供的一种数据传输系统的架构图;
图6是本发明实施例提供的一种数据传输方法的流程图;
图7是本发明实施例提供的一种数据传输装置的框图;
图8是本发明实施例提供的一种数据传输装置的框图;
图9是本发明实施例提供的一种数据传输装置的框图;
图10是本发明实施例提供的一种数据传输装置的框图;
图11是本发明实施例提供的一种数据传输装置的框图;
图12是本发明实施例提供的一种数据传输装置的框图;
图13是本发明实施例提供的一种数据传输装置的框图;
图14是本发明实施例提供的一种数据传输装置的框图;
图15是本发明实施例提供的一种基站的结构示意图;
图16是本发明实施例提供的一种中继通信设备的结构示意图;
图17是本发明实施例提供的一种用户设备的结构示意图。
具体实施方式
为使本发明的目的、技术方案和优点更加清楚,下面将结合附图对本发明实施方式作进一步地详细描述。
在对本发明提供的实施例进行解释说明之前,先对本发明提供的实施例的应用场景进行介绍。图1是本发明实施例提供的一种数据传输系统的架构图,如图1所示,包括用户设备、中继通信设备、基站和业务应用服务器,该数据传输系统用于实现不同用户设备之间的数据传输。用户设备可为车辆、手持设备等,中继通信设备可为路边单元等中继通信设备类型的通信单元;用户设备与中继通信设备上均安装有用于进行数据传输的应用,不同的用户设备之间可通过如下两种方式进行数据传输:
第一种方式、不同的用户设备之间通过安装的应用直接进行数据传输,由业务应用服务器为应用提供后台服务,当用户设备为车辆时,用户设备之间传输的数据包为车辆到车辆(Vehicle to Vehicle,V2V)数据包;
第二种方式、用户设备通过D2D链路将数据包发送至中继通信设备;中继通信设备将接收到的用户设备发送的数据包转发至基站;基站将该数据递交至网络侧的业务应用服务器,由业务应用服务器将数据广播给其他用户设备,实现用户设备之间的间接数据传输。
在上述第二种方式中,用户设备用于向其他用户设备和中继通信设备广播数据包,当用户设备为车辆时,用户设备广播的数据包可为V2V数据包;用户设备有两种通信方式将数据发送给中继通信设备:
第一种通信方式,用户设备将应用层数据发送给中继通信设备,中继通信设备可以将接收到的用户设备发送的数据包递交给应用层,由应用层决定是否将接收到的数据包进行应用层转发,若进行应用层转发,则指示中继通信设备将接收到的用户设备发送的应用层数据包在通信层添加数据包标识,并将添加数据包标识后的通信层数据包发送至基站;基站用于接收不同中继通信设备发送的数据包,并对属于同一用户设备的通信层数据包标识相同的数据包进行去 重,并将去重后的通信层数据包发送给业务应用服务器,由业务应用服务器将数据包发送给其他用户设备。此处去重是指:设备在一定范围内接收到的来自同一个用户设备的多个具有相同标识(比如下文提到的发送序列号或者帧号)的数据包,只将第一个数据包传输给通信对端。由于基站可对接收到的数据包进行去重后发送给业务应用服务器,使得业务应用服务器接收到的数据包中不包含重复的数据包,因此减少了业务应用服务器在广播数据包时传输资源的开销。其中,基站对数据包进行去重的方式包括基于帧号的去重和基于序列号的去重,根据基站不同的去重方式,本发明提供了两种数据传输方法,详见下述图2和图4对应的实施例。
第二种通信方式:用户设备将应用层数据包发送给中继通信设备后,中继通信设备不在应用层处理,直接通过通信层将数据转发给业务应用服务器。中继通信设备可与基站之间建立通信层连接,用于当中继通信设备获知应用层决定采用通信层进行转发时,在通信层与基站进行数据传输;并获取网络为中继通信设备分配的网络协议(Internet Protocol,IP)地址,用于中继通信设备和业务应用服务器基于上述IP地址在通信层进行数据传输。
可选的,当中继通信设备具有V2V应用层时,该应用层可以通过原语方式指示通信层是否使用应用层进行转发。如果使用通信层转发,则采用第二种通信方式;反之则使用第一种通信方式。
图2是本发明实施例提供的一种数据传输方法的流程图,该数据传输方法中中继通信设备使用应用层转发来自用户设备的数据包,基站采用的去重方式为基于帧号的去重。参见图2,本发明实施例提供的方法流程包括:
201、中继通信设备接收基站发送的第一去重配置信息。
在本发明实施例中,基站采用的去重方式为基于帧号的去重,在与中继通信设备建立连接之后,可对中继通信设备进行配置包括:为中继通信设备分配中继通信设备标识、进行数据传输的传输资源等。其中,中继通信设备标识可为中继通信设备标识符(Identifier,ID)、中继通信设备使用的IP地址等,本发明实施例对此不进行具体限定。此外,基站还会向中继通信设备发送第一去重配置信息,该第一去重配置信息用于指示基站采用的去重方式为基于帧号的去重;该第一去重配置信息可由基站以单播的形式发送给中继通信设备,通知中继通信设备基站采用的去重方式为基于帧号的去重;该第一去重配置信息可 为1比特数据,比如在基站向中继通信设备发送的数据中,用1位数据表示第一去重配置信息,该1位数据的内容可为0或1,本发明实施例对此不进行具体限定。中继通信设备在接收到基站发送的第一去重配置信息后,存储该第一去重配置信息,并在接收到用户设备发送的第一数据包后,执行下述步骤203。
在本发明实施例中,基站对中继通信设备进行配置时,还可对中继通信设备进行转发数据的最小功率门限进行配置,该最小功率门限用于指示中继通信设备仅将接收功率大于该最小功率门限的数据包发送至基站。
在另一实施例中,中继通信设备除通过基站获知第一去重配置信息外,还可预先配置第一去重配置信息,比如在安装中继通信设备时预先配置基于帧号的去重,或者在对中继通信设备进行初始化时预先配置基于帧号的去重,本发明实施例对此不进行具体限定。
202、用户设备广播第一数据包。
在本发明实施例中,用户设备通过D2D链路向周围广播第一数据包,用户设备周围的用户设备和多个中继通信设备均可监听到该广播的第一数据包。
其中,用户设备广播的数据包中携带该用户设备的用户设备标识,该用户设备标识可为长期演进(Long Term Evolution,LTE)D2D中的group ID(组标识),当该用户设备为车辆时,用户设备标识可为车辆的车牌号等,本发明实施例对此不进行具体限定。其中,该用户设备的用户设备标识可携带在数据包的源地址中(比如LTE D2D中的source ID),本发明实施例对此不进行具体限定。
203、中继通信设备接收用户设备发送的第一数据包,为第一数据包添加第一数据包标识,得到第二数据包,并将第二数据包发送至基站。
在本发明实施例中,用户设备周围多个中继通信设备中的任一中继通信设备在监听到用户设备发送的第一数据包后,接收用户设备发送的第一数据包。中继通信设备在接收到用户设备发送的第一数据包后,为第一数据包添加第一数据包标识,得到第二数据包。
其中,第一数据包中携带该用户设备的用户设备标识。第一数据包标识为接收到第一数据包的帧号;第一数据包的帧号可为第一数据包发送时刻对应的D2D系统帧号(D2D Frame Number,DFN),也可为第一数据包发送时刻对应的基站的系统帧号(System Frame Number,SFN),本发明实施例对此不进行具体限定。其中,第一数据包的帧号可以是是用户设备向中继通信设备发送第 一数据包的同时携带向中继通信设备发送第一数据包时的帧号,也可由中继通信设备在接收到第一数据包后,从基站获取该第一数据包的帧号,本发明实施例对此不进行具体限定。
可选的,中继通信设备上安装的应用可能具有应用层转发能力,也可能不具有应用层转发能力,中继通信设备的应用层可根据应用是否具有应用层转发能力决定是基于通信层进行转发还是基于应用层进行转发。中继通信设备接收到用户设备发送的第一数据包之后,将第一数据包递交至应用层;应用层在接收到中继通信设备递交的第一数据包后,若判断中继通信设备上安装的应用具有应用层转发能力,则决定基于应用层进行转发,并将指示基于应用层进行转发的转发层选择信息通过跨层原语方式发送给中继通信设备。中继通信设备在接收到由应用层通过跨层原语方式发送的指示基于应用层进行转发的转发层选择信息后,执行为第一数据包添加第一数据包标识以及后续发送步骤,即执行根据接收到第一数据包的帧号,为第一数据包添加第一数据包标识,得到第二数据包以及后续将第二数据包发送至基站的步骤。
在本发明实施例中,由于第一数据包中携带发送第一数据包的用户设备的用户设备标识,第二数据包由第一数据包添加第一数据包标识得到,因此第二数据包同样携带发送第一数据包的用户设备的用户设备标识,在具体实施时,中继通信设备在接收到第一数据包后,可根据第一数据包的数据内容和第一数据包携带的用户设备标识对第一数据包进行重组,并在重组的过程中,添加第一数据包标识,得到第二数据包。中继通信设备在得到第二数据包之后,将第二数据包发送至基站,由基站根据第一数据包标识和用户设备的用户设备标识采用基于帧号的去重方式进行数据包去重。其中,中继通信设备可通过无线接口(比如,LTE的Uu接口)将第二数据包发送至基站。
需要说明的是,若中继通信设备上安装的应用不具有应用层转发能力,则将接收到的第一数据包发送至基站,由基站直接将该第一数据包转发至业务应用服务器;业务应用服务器对接收到的数据包进行去重,即若业务应用服务器在指定时间内检测到两个完全相同的数据包,则删除重复的数据包,并将去重后的数据包进行广播,使得其他用户设备能够接收到业务应用服务器广播的数据包,实现不同用户设备之间的数据传输。
在本发明实施例中,为了避免中继通信设备将实际距离该中继通信设备距离过远的数据包也转发给基站,造成不必要的电量消耗以及传输资源消耗,基 站还可对中继通信设备进行转发数据的最小功率门限进行配置。若基站发送给中继通信设备的配置信令中中继通信设备进行转发数据的最小功率门限进行了配置,则在中继通信设备接收到用户设备发送的第一数据包后,判断第一数据包的接收功率是否大于最小功率门限;若第一数据包的接收功率大于最小功率门限,则执行为第一数据包添加第一数据包标识以及后续发送步骤。
204、基站接收中继通信设备发送的第二数据包,判断是否重复接收到由同一个用户设备发送的同一个数据包;基站如果判断该第二数据包不是重复接收到的由同一个用户设备发送的同一个数据包,则执行下述步骤205。
在本发明实施例中,基站可以接收到其覆盖范围内的所有中继通信设备发送的数据包。基站在接收到任一中继通信设备发送的数据包后,对该数据包进行解析,判断该数据包是否为第二数据包,即判断该数据包中是否包含用户设备标识和第一数据包标识。若该数据包中包含用户设备标识和第一数据包标识,则确定该数据包为第二数据包。之后,基站根据接收第二数据包之前所接收到的数据包的用户设备标识和数据包标识以及该第二数据包的用户设备标识和第一数据包标识,判断是否重复接收到由同一个用户设备发送的同一个数据包,详细过程如下:
在指定时间窗内或者缓存区内,判断接收第二数据包之前所接收到的数据包的用户设备标识和数据包标识中是否存在该第二数据包的用户设备标识和第一数据包标识;若存在该第二数据包的用户设备标识和第一数据包标识,则确定重复接收到了由同一个用户设备发送的同一个数据包。
其中,指定时间窗是指具有指定时长的一段时间,缓存区是指用来进行缓存基站接收到中继通信设备发送的数据包的存储区域。指定时间窗的长度或者缓存区的大小,可由基站根据接入网的配置信令或者由网络管理系统(Operation Administration and Maintenance,OAM)进行配置,还可由基站预配置,本发明实施例对此不进行具体限定。其中,指定时间窗的长度可为2秒、3秒、5秒等,本发明实施例对此不进行具体限定。在具体实施时,基站可在接收第二数据包之前所接收到的数据包的用户设备标识中,先获取与该第二数据包的用户设备标识相同的数据包,之后再在与该第二数据包的用户设备标识相同的数据包中,判断是否存在与该第二数据包的数据包标识相同的数据包;若存在,则确定重复接收到了由同一个用户设备发送的同一个数据包;若不存在,则确定该第二数据包不是重复接收到的由同一个用户设备发送的同一个数 据包。此外,基站也可先在接收第二数据包之前所接收到的数据包的数据包标识中,获取与该第二数据包的数据包标识相同的数据包,之后再与该第二数据包的数据包标识相同的数据包中,判断是否存在与该第二数据包的用户设备标识相同的数据包,本发明实施例对此不进行具体限定。
需要说明的是,基站覆盖范围内的每个中继通信设备向基站发送的数据包可能不是第二数据包,即发送的数据包中不包含用户设备标识或第一数据包标识,包括如下两种情况:第一种情况、中继通信设备在接收到基站发送的第一去重配置信息之前,不对用户设备发送的第一数据包添加帧号,使得中继通信设备向基站发送的数据包不包含第一数据包标识,不是第二数据包;第二种情况、中继通信设备安装的应用不具有应用层转发能力,中继通信设备在接收到用户设备发送的第一数据包后,不在为第一数据包添加帧号,使得中继通信设备向基站发送的数据包不包含第一数据包标识,不是第二数据包。如果基站在对接收到中继通信设备发送的数据包在通信层进行解析后,确定接收到的数据包中不包含用户设备标识和第一数据包标识,即接收到的数据包不是第二数据包,则直接将接收到的数据包转发至业务应用服务器,由业务应用服务器在应用层对数据包进行去重,即若业务应用服务器在指定时间内检测到两个完全相同的数据包,则删除重复的数据包、之后业务应用服务器将去重后的数据包进行广播,使得其他用户设备能够接收到业务应用服务器广播的数据包,实现不同用户设备之间的数据传输。
下面结合图3所示的一种数据传输系统的架构图,对判断是否重复接收到由同一个用户设备发送的同一个数据包的过程进行具举例说明。如图3所示,包括用户设备、中继通信设备1和中继通信设备2、基站。其中,中继通信设备1和中继通信设备2均可接收到用户设备广播的数据。以用户设备为车辆、用户设备广播的数据包的用户设备标识为车牌号为例。在T1时刻,用户设备向周围广播携带用户设备标识为“京A8888”的第一数据包D1;由于电磁波的传输速度为光速,因此中继通信设备1和中继通信设备2接收到D1的帧号相同,比如均为275号子帧,之后,中继通信设备1和中继通信设备2分别为D1添加第一数据包标识“275”(即接收到D1的帧号),分别得到第二数据包D2和第二数据包D3。之后,中继通信设备1向基站发送D2,中继通信设备2向基站发送D3。
假如基站首先接收到中继通信设备2发送的D3,则基站首先在指定时间 窗内或缓存区内接收到的数据包中,获取与D3的用户设备标识相同的数据包D4和D5。如图2所示D4的用户设备标识为“京A8888”、数据包标识为“273”,D5的用户设备标识为“京A8888”,数据包标识为“274”。之后,基站判断D4和D5的数据包标识是否为“275”。由于二者的数据包标识都不是“275”,因此基站确定D3不是重复接收到的由同一个用户设备发送的同一个数据包,并对D3进行缓存。之后,当基站接收到中继通信设备1发送的D2时,在指定时间窗内缓存的数据包中,获取与D2的用户设备标识相同的数据包D3、D4和D5,并判断D3、D4和D5的数据包标识是否为“275”。当基站发现D3的数据包标识为“275”时,确定D3与D2为由同一个用户设备发送的同一个数据包,即基站重复接收到由同一个用户设备发送的同一个数据包。
205、基站如果判断该第二数据包不是重复接收到的由同一个用户设备发送的同一个数据包,则将该第二数据包转发给业务应用服务器,由业务应用服务器将接收到的数据包进行广播,使得其他用户设备均能接收到广播的数据包。
在本发明实施例中,基站如果确定重复接收到了由同一个用户设备发送的同一个数据包,则对已接收到的数据包进行去重,比如在上述步骤204的例子中,基站在确定D3与D2为由同一个用户设备发送的同一个数据包后,则丢弃D2,以实现对接收到的数据包进行去重。基站如果判断该第二数据包不是重复接收到的由同一个用户设备发送的同一个数据包,则将该第二数据包转发给业务应用服务器,由业务应用服务器通过广播或多播网络发送给其他用户设备,使得其他用户设备均能接收到广播的数据包,实现了用户设备之间的数据传输。由于业务应用服务器向用户设备发送的是由基站去重后的数据包,因此大大降低了传输资源的开销,避免了传输资源的浪费。
本发明实施例提供的方法,中继通信设备根据基站配置的去重配置信息,对接收到的用户设备发送的第一数据包添加第一数据包标识(数据包的帧号)后再发送至基站,得到包含发送第一数据包的用户设备的用户设备标识和第一数据包标识的第二数据包,并将第二数据包发送至基站;基站根据接收第二数据包之前所接收到的数据包的用户设备标识和数据包标识以及第二数据包的用户设备标识和数据包标识,在判断第二数据包不是重复接收到的由同一个用户设备发送的同一个数据包后,将第二数据包转发给业务应用服务器,使得业务应用服务器广播的数据包为基站去重后的数据包,因此大大降低了传输资源 的开销,避免了传输资源的浪费。
图4是本发明实施例提供的一种数据传输方法的流程图,该数据传输方法中基站采用的去重方式为基于帧号的去重。参见图4,本发明实施例提供的方法流程包括:
401、中继通信设备接收基站发送的第二去重配置信息。
在本发明实施例中,基站在与中继通信设备建立连接之后,对中继通信设备进行配置可包括:为中继通信设备分配中继通信设备标识、进行数据传输的传输资源等。其中,中继通信设备标识可为中继通信设备ID、IP地址等,本发明实施例对此不进行具体限定。此外,基站还会向中继通信设备发送第二去重配置信息,该第二去重配置信息用于指示基站在通信层采用的去重方式为基于序列号的去重;该第二去重配置信息可由基站以单播的形式发送给中继通信设备,通知中继通信设备基站采用的去重方式为基于序列号的去重;该第二去重配置信息可为1比特数据,比如在基站向中继通信设备发送的数据中,用1位数据表示第一去重配置信息,该1位数据的内容可为0或1,本发明实施例对此不进行具体限定。中继通信设备在接收到基站发送的第二去重配置信息后,存储该第二去重配置信息,并在接收到用户设备发送的第三数据包后,执行下述步骤404。
在本发明实施例中,基站为中继通信设备发送的配置信令中可配置中继通信设备进行转发数据的最小功率门限,该最小功率门限用于指示中继通信设备仅将接收功率大于该最小功率门限的数据包发送至基站。
402、基站广播第二去重配置信息。
在本发明实施例中,基站覆盖范围内的用户设备可接收到基站广播的数据,当基站确定在通信层采用基于序列号的去重方式后,广播第二去重配置信息,通知用户设备根据第二去重配置信息指示的去重方式向中继通信设备发送数据包。
403、用户设备获取待广播的数据,根据第三数据包标识和该待广播的数据,生成第三数据包,并将第三数据包发送至中继通信设备。
在本发明实施例中,用户设备在获取待广播数据之前,接收基站广播的第二去重配置信息,获知基站采用的去重方式为基于序列号的去重。之后,用户设备获取待广播的数据,根据第三数据包标识和该待广播的数据,生成第三数 据包,具体过程如下:
用户设备获取待广播的数据,将第三数据包标识添加在待广播的数据中,生成第三数据包。其中,第三数据包标识为第三数据包的发送序列号。该发送序列号为用户设备维护的在指定数值范围内周期变化的数值。在具体实施时,可在第三数据包的包头增加一个序列号域,该序列号域中包含第三数据包的发送序列号。其中,该发送序列号可采用循环加一的方式实现,比如从0开始编号,每发送一个数据包,新发送序列号由上一个发送序列号加一得到,当发送序列号达到最大序列号阈值时,重新从0开始编号。其中,该序列号域可添加在LTE的媒介访问控制协议(Media Access Control,MAC)包头,或者分组数据汇聚协议(Packet Data Convergence Protocol,PDCP)包头,本发明实施例对此不进行具体限定。
此外,用户设备在生成第三数据包时,还可将用户设备的用户设备标识携带在第三数据包中,该用户设备标识可为LTE D2D中的source ID,当该用户设备为车辆时,用户设备标识可为车辆的标识等,本发明实施例对此不进行具体限定。其中,该用户设备的用户设备标识可携带在数据包的源地址中,本发明实施例对此不进行具体限定。
在本发明实施例中,用户设备在生成第三数据包之后,向中继通信设备发送该第三数据包。其中,该第三数据包中携带用户设备的用户设备标识和第三数据包标识。需要说明的是,用户设备在发送第三数据包时,以广播的形式发送,用户设备周围的中继通信设备和其他用户设备均可接收到该第三数据包。
404、中继通信设备接收用户设备发送的第三数据包,根据第三数据包的数据内容和第三数据包标识,生成第四数据包,并将第四数据包发送至基站。
在本发明实施例中,中继通信设备接收基站发送的第二去重配置信息,之后,当监听到用户设备广播的第三数据包时,接收第三数据包。之后,中继通信设备根据第三数据包的数据内容和第三数据包标识,生成第四数据包,即中继通信设备将第三数据包的数据内容和第三数据包标识打包生成第四数据包;中继通信设备将第四数据包发送至基站,由基站根据第三数据包标识和用户设备的用户设备标识采用基于序列号的去重方式进行数据包去重。
可选的,中继通信设备上安装的应用可能具有应用层转发能力,也可能不具有应用层转发能力,中继通信设备的应用层可根据应用是否具有应用层转发能力决定是基于通信层进行转发还是基于应用层进行转发。中继通信设备接收 到用户设备发送的第三数据包之后,将第三数据包递交至应用层;应用层在接收到中继通信设备递交的第三数据包后,若判断中继通信设备上安装的应用具有应用层转发能力,则决定基于应用层进行转发,并将指示基于应用层进行转发的转发层选择信息通过跨层原语方式发送给中继通信设备;中继通信设备在接收到应用层通过跨层原语方式发送的指示基于应用层进行转发的转发层选择信息后,中继通信设备根据第三数据包的数据内容和第三数据包标识,生成第四数据包,之后将数据递交给应用层,通过应用层将数据包转发至基站,。
需要说明的是,若中继通信设备上安装的应用决定基于通信层进行转发,并将指示基于通信层进行转发的转发层选择信息通过跨层原语方式发送给中继通信设备。中继通信设备在接收到指示基于通信层进行转发的转发层选择信息后,将接收到的第三数据包发送至基站,由基站直接将该第三数据包转发至业务应用服务器;业务应用服务器对接收到的数据包进行去重,即若业务应用服务器在指定时间内检测到两个完全相同的数据包,则删除重复的数据包,并将去重后的数据包进行广播,使得其他用户设备能够接收到业务应用服务器广播的数据包,实现不同用户设备之间的数据传输。
需要说明的是,现有技术中,中继通信设备在接收到用户设备发送的数据包后,会对该数据包进行解析,去除原数据包的包头,再添加一个新的包头生成一个新数据包,之后再将新数据包发送至基站。本发明实施例中,当中继通信设备根据基站的第二去重配置信息获知基站采用的去重方式为基于序列号的去重时,仅将接收到的数据包的数据内容和数据包标识组装成一个新数据包,不会去除或更改包含在源地址中的用户设备标识和包含在包头的数据包标识。
需要说明的是,除了通过上述接收基站发送的去重配置信息的方式,获知基站采用基于序列号的去重之外,中继通信设备还可通过如下方式获知基站采用基于序列号的去重:
方式一、基站在对中继通信设备进行配置时,通过配置第二去重配置信息告知中继通信设备采用基于序列号的去重;
方式二、中继通信设备在接收到用户设备发送的数据包后,若解析到该数据包包含用户设备标识和第三数据包标识,则确定基站采用基于序列号的去重;
方式三、中继通信设备进行第二去重配置信息的预先配置,比如在安装中 继通信设备时预先配置基于序列号的去重,或者在对中继通信设备进行初始化时预先配置基于帧号的去重,本发明实施例对此不进行具体限定。
方式四、第二去重配置信息是广播发送的,所有中继通信设备和用户设备都可以解析该配置信息,并获知该小区的用户设备会在发送的数据中添加第三数据包标识。
在另一实施例中,为了避免距离中继通信设备较远的用户设备的数据也转发给基站,造成不必要的电量消耗以及传输资源消耗,基站还可对中继通信设备进行转发数据的最小功率门限进行配置。若基站在对中继通信设备进行配置时,对中继通信设备进行转发数据的最小功率门限进行了配置,则在中继通信设备接收到用户设备发送的第三数据包后,判断第三数据包的接收功率是否大于最小功率门限;若第三数据包的接收功率大于最小功率门限,则执行根据所述第三数据包的数据内容和所述第三数据包标识,生成第四数据包以及后续发送步骤。
405、基站接收中继通信设备发送的第四数据包,判断是否重复接收到由同一个用户设备发送的同一个数据包;基站如果判断该第二数据包不是重复接收到的由同一个用户设备发送的同一个数据包,则执行下述步骤406。
在本发明实施例中,基站可以接收到其覆盖范围内的所有中继通信设备发送的数据包。基站在接收到任一中继通信设备发送的数据包后,对该数据包进行解析,判断该数据包中是否为第四数据包,即判断该数据包中是否包含用户设备标识和第三数据包标识。若该数据包中包含用户设备标识和第三数据包标识,则确定该数据包为第四数据包。之后,基站根据接收第四数据包之前所接收到的数据包的用户设备标识和数据包标识以及该第四数据包的用户设备标识和第三数据包标识,判断是否重复接收到由同一个用户设备发送的同一个数据包,详细过程如下:
在指定时间窗内或者缓存区内,判断接收第四数据包之前所接收到的数据包的用户设备标识和数据包标识中是否存在该第四数据包的用户设备标识和第三数据包标识;若存在该第四数据包的用户设备标识和第三数据包标识,则确定重复接收到了由同一个用户设备发送的同一个数据包。
其中,指定时间窗是指具有指定时长的一段时间,缓存区是指用来进行缓存基站接收到中继通信设备发送的数据包的存储区域。指定时间窗的长度或者缓存区的大小,可由基站根据接入网的配置信令进行配置,或者由网络管理系 统进行配置,或者由基站预配置,本发明实施例对此不进行具体限定。其中,指定时间窗的长度可为2秒、3秒、5秒等,本发明实施例对此不进行具体限定。在具体实施时,基站可在接收第四数据包之前所接收到的数据包的用户设备标识中,先获取与该第四数据包的用户设备标识相同的数据包,之后再判断与该第四数据包的用户标识相同的数据包中,是否存在与该第四数据包的数据包标识相同的数据包;若存在,则确定重复接收到了由同一个用户设备发送的同一个数据包;若不存在,则确定该第四数据包不是重复接收到的由同一个用户设备发送的同一个数据包。此外,基站也可先在接收第四数据包之前所接收到的数据包的数据包标识中,获取与该第四数据包的数据包标识相同的数据包,之后再与该第四数据包的数据包标识相同的数据包中,判断是否存在与该第四数据包的用户设备标识相同的数据包,本发明实施例对此不进行具体限定。由于基站能够对接收到的数据包进行去重后发送给业务应用服务器,使得业务应用服务器接收到的数据包中不包含重复的数据包,因此减少了业务应用服务器在广播数据包时传输资源的开销。
需要说明的是,基站接收到中继通信设备发送的数据包可能不是第四数据包,即基站接收到的中继通信设备发送的数据包中可能不包含用户设备标识或第三数据包标识,包括如下两种情况:第一种情况、在基站广播第二去重配置信息之前,用户设备在向中继通信设备发送的数据包中不添加发送序列号,使得中继通信设备向基站的数据包不包含第三数据包标识,不是第四数据包;第二种情况、中继通信设备安装的应用不具有应用层转发能力,中继通信设备在接收到用户设备发送的数据包后,直接将包含第三数据包标识的包头去除,添加新的包头,生成不包含第三数据包标识的新数据包,使得中继通信设备向基站发送的数据包不包含第三数据包标识,不是第四数据包。如果基站在对接收到中继通信设备发送的数据包在通信层进行解析后,确定接收到的数据包中不包含用户设备标识和第三数据包标识,即,接收到的数据包不是第四数据包,则直接将接收到的数据包转发至业务应用服务器,由业务应用服务器在应用层对数据包进行去重,即若业务应用服务器在指定时间内检测到两个完全相同的数据包,则删除重复的数据包。之后业务应用服务器将去重后的数据包进行广播,使得其他用户设备能够接收到业务应用服务器广播的数据包,实现不同用户设备之间的数据传输。
在本发明实施例中,普通用户设备收到第三数据包时,由于已经在广播配 置信令中知道了本小区的所有中继通信设备都采用基于序列号的去重方式,因此可以识别在第三数据包头中的第三数据包标识,并将该标识去掉后递交给应用层,以便获知接收到的数据包中的数据内容,实现用户设备之间的数据传输。
下面结合图5所示的一种数据传输系统的架构图,对判断是否重复接收到由同一个用户设备发送的同一个数据包的过程进行具举例说明,如图5所示,包括用户设备、中继通信设备1和中继通信设备2、基站。其中,中继通信设备1和中继通信设备2均可接收到用户设备广播的数据。以用户设备为车辆、用户设备广播的数据包的用户设备标识为车牌号,在T1时刻,用户设备向周围广播携带用户设备标识为“京A8888”、发送序列号为“1001”的第三数据包D1;中继通信设备1和中继通信设备2接收到该第三数据包D1后,分别向基站发送D10和D11。
假如基站首先接收到中继通信设备2发送的D11,则基站首先在指定时间窗内或缓存区内接收到的数据包中,获取与D11的用户设备标识相同的数据包D2和D3。如图4所示D2的用户设备标识为“京A8888”、数据包标识为“1009”,D3的用户设备标识为“京A8888”,数据包标识为“1010”。之后,基站判断D2和D3的数据包标识是否为“1001”。由于二者的数据包标识都不是“1001”,因此基站确定D11不是重复接收到的由同一个用户设备发送的同一个数据包后,对D11进行缓存。之后,当基站接收到中继通信设备1发送的D10时,在指定时间窗内缓存的数据包中,获取与D10的用户设备标识相同的数据包D11、D2和D3,并判断D11、D2和D3的数据包标识是否为“1001”。当基站发现D11的数据包标识为“1001”时,确定D11与D10为由同一个用户设备发送的同一个数据包,即基站重复接收到由同一个用户设备发送的同一个数据包。
406、基站如果判断该第四数据包不是重复接收到的由同一个用户设备发送的同一个数据包,则将该第二数据包转发给业务应用服务器,由业务应用服务器将接收到的数据包进行广播,使得其他用户设备均能接收到广播的数据包。
在本发明实施例中,基站如果确定重复接收到了由同一个用户设备发送的同一个数据包,则对已接收到的数据包进行去重,比如在上述步骤405的例子中,基站在确定D10与D11为由同一个用户设备发送的同一个数据包后,则丢弃D10,以实现对接收到的数据包进行去重。基站如果判断该第四数据包不 是重复接收到的由同一个用户设备发送的同一个数据包,则将该第二数据包转发给业务应用服务器,由业务应用服务器通过广播或多播网络发送给其他用户设备,使得其他用户设备均能接收到广播的数据包,实现了用户设备之间的数据传输。由于业务应用服务器向用户设备发送的是由基站去重后的数据包,因此大大降低了传输资源的开销,避免了传输资源的浪费。
本发明实施例提供的方法,用户设备根据基站广播的去重配置信息,在向中继通信设备发送的第三数据包中携带了该数据包的数据包标识(数据包的发送序列号);中继通信设备在接收到第三数据包后,在对数据包进行组装时,保留原第三数据包的用户设备标识和数据包标识,生成第四数据包,并将第四数据包发送至基站。基站接收到的中继通信设备发送的第四数据包后,根据接收第四数据包之前所接收到的数据包的用户设备标识和数据包标识以及第四数据包的用户设备标识和数据包标识,在判断第四数据包不是重复接收到的由同一个用户设备发送的同一个数据包后,将第四数据包转发给业务应用服务器,使得业务应用服务器广播的数据包为基站去重后的数据包,因此大大降低了传输资源的开销,避免了传输资源的浪费。
在对本发明实施例提供的下一个实施例进行解释说明之前,先对下一个实施例对应的现有技术进行介绍。现有技术中,在实现用户设备通过中继通信设备将数据包转发至基站时,采用的技术方案为:通过中继(relay)节点实现将基站覆盖范围边沿的与基站之间链路信号较差的用户设备的数据包转发给基站。首先用户设备通过relay发现过程,发现一个可用的relay节点。之后,用户设备与该relay节点之间建立单播通信连接,并且在建立连接的过程中,完成安全密钥的协商。用户设备采用协商的安全密钥对数据包进行加密后,发送给relay节点,relay节点将接收到的数据包进行解密后转发至基站,由基站将接收到的数据包通过下行的多播或者广播信道,发送给小区内的其他用户设备。由于用户设备与relay节点之间建立的是单播连接,并且发送的数据包是经过加密的,其他用户设备没有密钥无法获取该数据包,使得该用户设备发送的数据包只有相应的relay节点可以接收。若要使其他用户设备接收到该用户设备的数据包,除发送单播数据包之外,该用户设备还需发送前两个实施例中使用的广播数据包,使得空口资源开销增大。
为了解决上述技术问题,本发明实施例还提供了一种数据传输方法,图6 是本发明实施例提供的一种数据传输方法的流程图。参见图6,本发明实施例提供的方法流程包括:
601、基站广播针对中继通信设备的接收配置参数。
在本发明实施例中,为了使用户设备发送给中继通信设备的单播数据包,不仅能被中继通信设备接收到,并且也能被其他用户设备识别并接收,本发明实施例对现有技术中的实现方案进行了改进。基站在对中继通信设备进行配置时,除了分配进行数据传输的传输资源外,还为中继通信设备分配了接收配置参数,该接收配置参数至少包括:完整性保护参数、中继通信设备的中继通信设备标识和头压缩配置。其中,完整性保护参数用于指示第一用户设备对待发送的数据进行数据完整性校验,中继通信设备的中继通信设备标识用于指示第一用户设备发送的数据包的目的中继通信设备为该中继通信设备标识指示的中继通信设备,而不会对这个数据包进行加密。头压缩配置用于第一用户设备在生成数据包时对数据包头(比如IP,UDP头)进行压缩。其中,中继通信设备标识可为中继通信设备ID、IP地址等,本发明实施例对此不进行具体限定。
其中,完整性保护参数可为MAC层证书,或PDCP层证书,或PDCP层基于对称密钥的信息完整性检验(Message Integrity Check,MIC)域,本发明实施例对此不进行具体限定。其中,MIC域可为在PDCP层额外增加的域;若完整性保护参数为证书,则针对证书的有效性可由中继通信设备预先从认证中心下载的证书配置文件中获得,无需由中继通信设备与基站进行交互。
需要说明的是,用户设备可与其他用户设备通过D2D链路直接进行数据传输,也可通过中继通信设备和基站实现与其他用户设备之间进行间接数据传输,其中用户设备可为车辆、手持设备等,中继通信设备可为路边单元等中继通信设备类型的通信单元,本发明实施例对此不进行具体限定。其中,中继通信设备和用户设备上均安装有用于进行数据传输的应用;在用户设备与其他用户设备之间进行直接通信时,业务应用服务器为其提供应用服务。当用户设备与其他用户设备之间的D2D链路不好的情况下,用户设备可先将数据包发送至中继通信设备,由中继通信设备将接收到的数据包发送至基站,再由基站将接收到的数据包转发至业务应用服务器,最后业务应用服务器将接收到的数据包广播给其他用户设备。其中,中继通信设备在接收用户设备发送的数据包之前,中继通信设备可与基站之间建立通信层连接,使得中继通信设备可在通信 层与基站进行数据传输。
在另一实施例中,基站对中继通信设备进行配置时,还可对中继通信设备进行转发数据的最小功率门限进行配置,该最小功率门限用于指示中继通信设备仅将接收功率大于该最小功率门限的数据包发送至基站。
在本发明实施例中,在对中继通信设备分配了接收配置参数之后,基站广播针对中继通信设备的接收配置参数,使得基站覆盖范围内的用户设备均可接收到中继通信设备的接收配置参数,并根据该中继通信设备的接收配置参数接收其他用户设备向该中继通信设备发送的数据包。
需要说明的是,除了由基站的广播消息携带外,中继通信设备的接收配置参数还可由中继通信设备的广播消息携带或者由网络管理系统配置,本发明实施例对此不进行具体限定。
602、第一用户设备获取待发送的数据,根据中继通信设备的接收配置参数和该待发送的数据,生成第五数据包,并发送第五数据包。
在本发明实施例中,当第一用户设备进入中继通信设备的覆盖范围内时,通过中继通信设备发现机制与中继通信设备进行数据交互,确定中继通信设备为可用的中继通信设备后,发起与中继通信设备的连接过程,与中继通信设备建立连接。其中,建立连接的过程中,进行用于完整性保护的证书、头压缩、中继通信设备其他配置的协商,中继通信设备为第一用户设备配置中继通信设备的接收配置参数。其中,第一用户设备与中继通信设备建立的连接为特殊的单播连接,该特殊的单播连接不仅可以使中继通信设备接收到第一用户设备发送的数据包,还可使第二用户设备在判断第一用户设备发送的数据包为向该中继通信设备发送的数据包后,接收该数据包。此外,中继通信设备还可为第一用户设备分配IP地址,使得第一用户设备和中继通信设备能够在通信层进行数据的IP中继。
在本发明实施例中,第一用户设备完成与中继通信设备建立连接后,获取待发送的数据,并根据中继通信设备的接收配置参数和该待发送的数据,生成第五数据包,并发送第五数据包,具体过程如下:
第一用户设备对中继通信设备的接收配置参数进行解析,得到完整性保护参数、中继通信设备的中继通信设备标识和头压缩配置;之后,根据该完整性保护参数对待发送数据进行签名并添加协商的证书(或者添加MIC域),根据该头压缩配置对包头进行压缩,并将该中继通信设备的中继通信设备标识作为 目的地址(比如LTE D2D的source ID(源标识)),得到第五数据包;之后,通过特殊的单播连接发送第五数据包。
在另一实施例中,第五数据包的包头还可携带指定标识,该指定标识用于指示该第五数据包为发送给中继通信设备的数据包,使得第二用户设备能够根据该指定标识接收该第五数据包。该指定标识可携带在通信层数据包的包头,如MAC包头、PDCP包头等,本发明实施例对此不进行具体限定。
在另一实施例中,该中继通信设备的中继通信设备还可包含指定前缀信息,该指定前缀信息用于指示第五数据包为发送给该中继通信设备的数据包,使得第二用户设备能够根据该指定前缀信息接收该第五数据包。
603、第二用户设备监听数据包,并判断该数据包是否为发送给中继通信设备的数据包;若该数据包为发送给中继通信设备的数据包,则执行下述步骤604。
在本发明实施例中,第二用户设备指代基站覆盖范围内的第一用户设备周围的用户设备。基站向覆盖范围内的所有用户设备广播中继通信设备的接收配置参数后,第二用户设备可接收到中继通信设备的接收配置参数,并将中继通信设备的接收配置参数进行存储,该接收配置参数至少包括完整性保护参数、中继通信设备的中继通信设备标识和头压缩配置。该中继通信设备的接收配置参数,用于接收第一用户设备向中继通信设备发送的数据包。第二用户设备会时刻监听第一用户设备发送的数据包,在第二用户设备监听到第一用户设备发送的数据包后,判断该数据包是否为发送给中继通信设备的数据包,判断方式如下:
方式一、对该数据包进行解析,若该数据包的包头携带指定标识,则确定该数据包为发送给中继通信设备的数据包;
方式二、对该数据包进行解析,若该数据包的目的地址包含指定前缀信息,则确定该数据包为发送给中继通信设备的数据包;
方式三、对该数据包进行解析,若该数据包携带的完整性保护参数、中继通信设备标识、头压缩方式与存储的中继通信设备的接收配置参数匹配,则确定该数据包为发送给中继通信设备的数据包。
需要说明的是,中继通信设备可通过与用户设备之间建立的连接,接收用户设备发送的第五数据包,并根据存储的完整性保护参数和头压缩配置对第五数据包进行处理,得到第六数据包,包括:第一步,在接收到用户设备发送的 第五数据包后,对该第五数据包进行解析,若解析到该第五数据包的中继通信设备标识与自身中继通信设备标识一致,或解析到该第五数据包中携带指定标识且中继通信设备标识与自身中继通信设备标识一致,则执行第二步,根据完整性保护参数对该第五数据包的进行完整性校验,并在完整性校验通过后,执行第三步,根据头压缩配置对该数据包包头进行解压缩,得到第六数据包。之后,将第六数据包发送给基站;基站将接收到的数据包转发至业务应用服务器,由业务应用服务器将接收到的数据包发送给第二用户设备,实现不同用户设备之间的数据传输。需要说明的是,中继通信设备的接收配置参数可包括完整性保护参数、中继通信设备的中继通信设备标识和头压缩配置中的一个或多个,当中继通信设备根据存储的接收配置参数中的一个或多个对数据包解析成功之后,便能够正确接收该第五数据包,上述过程中的三个步骤不一定同时存在。
在本发明实施例中,中继通信设备可广播基站配置的接收配置参数,使得用户设备在获知中继通信设备的接收配置参数后,根据该中继通信设备的接收配置参数向该中继通信设备发送数据包,并根据该中继通信设备的接收配置参数接收其他用户设备发送给该中继通信设备的数据包。
在另一实施例中,中继通信设备在接收用户设备发送的第五数据包后,判断该第五数据包的接收功率是否大于最小功率门限;若该第五数据包的接收功率大于该最小功率门限,则执行根据完整性保护参数和头压缩配置对该第五数据包进行处理以及后续发送步骤。
604、若第二用户设备确定监听到的数据包为发送给中继通信设备的数据包,则根据存储的中继通信设备的接收配置参数,接收该数据包。
在本发明实施例中,若第二用户设备确定监听到的数据包为发送给中继通信设备的数据包,则根据存储的中继通信设备的接收配置参数,接收该数据包,详细过程如下:
根据接收配置参数中的完整性保护参数对该数据包进行完整性校验,并在完整性校验通过后,根据接收配置参数中的头压缩配置对该数据包包头进行解压缩,最终将该数据包恢复成应用层能够解析的数据包;之后,中继通信设备将恢复后的数据包递交至应用层,由应用层对接收到的数据包进行解析,得到数据包中的数据,至此完成第一用户设备与第二用户设备之间的数据传输。
需要说明的是,第一用户设备和第二用户设备获取的中继通信设备的接收配置参数均可由基站的广播消息携带,或由中继通信设备的广播消息携带,或 由网管系统配置,本发明实施例对此不进行具体限定。
本发明实施例提供的方法,基站广播针对中继通信设备的接收配置参数;用户设备接收并存储接收到的中继通信设备的接收配置参数,并根据中继通信设备的接收配置参数,向中继通信设备发送数据包;其他用户设备在监听到数据包后,根据存储的中继通信设备的接收配置参数,判断该数据包为发送至中继通信设备的数据包后,接收该数据包。通过基站广播针对中继通信设备的接收配置参数,使得用户设备发送的数据包不仅能被目的中继通信设备接收到,还能被其他用户设备接收到,使得用户设备无需额外发送广播数据包,因此该种数据传输方法降低了空口资源的开销。
图7是本发明实施例提供的一种数据传输装置,参见图7,包括接收模块701,判断模块702和发送模块703。
其中,接收模块701与判断模块702连接,用于接收中继通信设备发送的数据包,该数据包携带发送数据包的用户设备标识和数据包标识,数据包标识用于唯一标识该数据包;判断模块702与发送模块703连接,用于根据接收该数据包之前所接收到的数据包的用户设备标识和数据包标识以及该数据包的用户设备标识和数据包标识,判断是否重复接收到由同一个用户设备发送的同一个数据包;发送模块703,用于如果判断该数据包不是重复接收到的由同一个用户设备发送的同一个数据包,则将该数据包转发给业务应用服务器。
可选地,判断模块702,用于在指定时间窗或者缓存区内,判断接收该数据包之前所接收到的数据包的用户设备标识和数据包标识中是否存在该数据包的用户设备标识和数据包标识;若存在该数据包的用户设备标识和数据包标识,则确定重复接收到了由同一个用户设备发送的同一个数据包;其中,数据包标识为该数据包的帧号或该数据包的发送序列号。
可选地,指定时间窗的长度或者缓存区的大小,由接入网络的配置信令或者由网络管理系统进行配置。
本发明实施例提供的装置,通过对同一用户设备的具有同一数据包标识的数据包进行去重处理后,发送至业务应用服务器,使得业务应用服务器接收到的数据包中不包含重复的数据包,因此业务应用服务器在向用户设备广播数据包时,大大降低了传输资源的开销,避免了传输资源的浪费。
图8是本发明实施例提供的一种数据传输装置,参见图8,包括接收模块801,生成模块802和发送模块803。
其中,接收模块801与生成模块802连接,用于接收用户设备发送的第一数据包,第一数据包携带用户设备的用户设备标识;生成模块802与发送模块803连接,用于为第一数据包添加第一数据包标识,得到第二数据包;发送模块803,用于将第二数据包发送至基站,由基站根据第一数据包标识和用户设备的用户设备标识采用基于帧号的去重方式进行数据包去重。
可选地,第一数据包标识为接收到第一数据包的帧号。
可选地,第一数据包的帧号为第一数据包发送时刻对应的D2D系统帧号DFN,或第一数据包的帧号为第一数据包发送时刻对应的基站的系统帧号。
可选地,该装置还包括:
判断模块,用于判断第一数据包的接收功率是否大于最小功率门限;若第一数据包的接收功率大于最小功率门限,则执行为第一数据包添加第一数据包标识以及后续发送步骤。
可选地,接收模块801,还用于接收基站发送的去重配置信息,去重配置信息用于指示基站采用的去重方式,相应地,若去重配置信息为第一去重配置信息,则在接收到用户设备发送的第一数据包后,执行为第一数据包添加第一数据包标识的步骤,第一去重配置信息指示的去重方式为基于帧号的去重。
可选地,接收模块801,还用于将第一数据包递交至应用层,并接收由应用层通过跨层原语方式发送的转发层选择信息,转发层选择信息用于指示基于应用层或通信层进行转发;若转发层选择信息指示基于应用层进行转发,则执行为第一数据包添加第一数据包标识以及后续发送步骤。
本发明实施例提供的装置,通过对接收到的数据包添加数据包标识,使得基站能够根据数据包标识对接收到的数据包进行去重,并将去重后的数据包发送至业务应用服务器,大大降低了业务应用服务器在向用户设备广播数据包时传输资源的开销,避免了传输资源的浪费。
图9是本发明实施例提供的一种数据传输装置,参见图9,包括:接收模块901,生成模块902,发送模块903。
其中,接收模块901与生成模块902连接,用于接收用户设备发送的第三数据包,第三数据包携带用户设备的用户设备标识和第三数据包标识,第三数 据包标识由用户设备在发送数据时添加;生成模块902与发送模块903连接,用于根据第三数据包的数据内容和第三数据包标识,生成第四数据包;发送模块903用于将第四数据包发送至基站,由基站根据第三数据包标识和用户设备的用户设备标识采用基于序列号的去重方式进行数据包去重。
可选地,第三数据包标识为第三数据包的发送序列号,发送序列号为用户设备维护的在指定数值范围内规律变化的数值。
可选地,该装置还包括:
判断模块,用于判断第三数据包的接收功率是否大于最小功率门限;若第三数据包的接收功率大于最小功率门限,则执行将第三数据包发送至基站的步骤。
可选地,接收模块901,还用于接收基站发送的去重配置信息,去重配置信息用于指示基站所采用的去重方式,相应地,若去重配置信息为第二去重配置信息,则在接收到用户设备发送的第三数据包后,执行根据第三数据包的数据内容和第三数据包标识,生成第四数据包以及后续发送步骤,第二去重配置信息指示的去重方式为基于序列号的去重。
可选地,接收模块901,还用于将第三数据包递交至应用层,并接收由应用层通过跨层原语方式发送的转发层选择信息,转发层选择信息用于指示基于应用层或通信层进行转发;若转发层选择信息指示基于应用层进行转发,则执行根据第三数据包的数据内容和第三数据包标识,生成第四数据包以及后续发送的步骤。
本发明实施例提供的装置,通过对用户设备发送的携带数据包标识的数据包进行重组,保留原有的数据包标识,使得基站能够根据接收到的数据包标识对数据包进行去重,并将去重后的数据包发送至业务应用服务器,大大降低了业务应用服务器在向用户设备广播数据包时传输资源的开销,避免了传输资源的浪费。
图10是本发明实施例提供的一种数据传输装置,参见图10,包括:获取模块1001,生成模块1002,发送模块1003。
其中,获取模块1001与生成模块1002连接,用于获取待广播的数据;生成模块1002与发送模块1003,用于根据第三数据包标识和待广播的数据,生成第三数据包,第三数据包携带用户设备的用户设备标识和第三数据包标识; 发送模块1003,用于向中继通信设备发送第三数据包,由中继通信设备将第三数据包发送至基站。
可选地,第三数据包标识为第三数据包的发送序列号,发送序列号为用户设备维护的在指定数值范围内规律变化的数值。
可选地,该装置还包括:
接收模块,用于接收基站广播的去重配置信息,去重配置信息用于指示基站采用的去重方式,相应地,当去重配置信息为第二去重配置信息时,执行根据第三数据包标识和待广播的数据,生成第三数据包的步骤,第二去重配置信息指示的去重方式为基于序列号的去重。
本发明实施例提供的装置,通过在待广播数据中添加数据包标识,使得基站接收到由中继通信设备转发的数据包后,能够根据数据包标识对接收到的数据包进行去重,并将去重后的数据包发送至业务应用服务器,大大降低了业务应用服务器在向用户设备广播数据包时传输资源的开销,避免了传输资源的浪费。
图11是本发明实施例提供的一种数据传输装置,参见图11,包括:获取模块1101,生成模块1102,发送模块1103。
其中,获取模块1101与生成模块1102连接,用于获取待发送的数据;生成模块1102与发送模块1103连接,用于根据中继通信设备的接收配置参数和待发送的数据,生成第五数据包,第五数据包携带中继通信设备的中继通信设备标识,中继通信设备标识用于指示第五数据包的目的中继通信设备为中继通信设备;发送模块1103,用于发送第五数据包。
可选地,第五数据包的包头携带指定标识,指定标识用于指示第五数据包为发送给中继通信设备的数据包,使得其他用户设备能够根据指定标识接收第五数据包;或,中继通信设备的中继通信设备标识包含指定前缀信息,指定前缀信息用于指示第五数据包为发送给中继通信设备的数据包,使得其他用户设备能够根据指定前缀信息接收第五数据包。
可选地,中继通信设备的接收配置参数至少包括基站为中继通信设备配置的完整性保护参数、中继通信设备的中继通信设备标识和头压缩配置,完整性保护参数用于对待发送的数据进行数据完整性认证,中继通信设备的中继通信设备标识用于指示第四数据包的目的中继通信设备为中继通信设备,头压缩配 置用于在生成第四数据包时对包头进行压缩。
可选地,完整性保护参数为媒介访问控制MAC层证书,或分组数据汇聚协议PDCP层证书,或PDCP层基于对称密钥的信息完整性检验MIC域。
本发明实施例提供的装置,通过向中继通信设备发送满足中继通信设备的接收配置参数的单播数据包,使得中继通信设备和拥有中继通信设备的接收配置参数的其他用户设备均可接收到该单播数据包,不必再向其他用户设备额外的发送广播数据包,避免了传输资源的浪费。
图12是本发明实施例提供的一种数据传输装置,参见图12,包括:监听模块1201,判断模块1202和接收模块1203。
监听模块1201与判断模块1202连接,用于监听数据包;判断模块1202与接收模块1203连接,用于判断数据包是否为发送给中继通信设备的数据包;接收模块1203,用于若数据包为发送给中继通信设备的数据包,则根据存储的中继通信设备的接收配置参数,接收数据包。
可选地,判断模块1202,用于对数据包进行解析,若数据包的包头携带指定标识,则确定数据包为发送给中继通信设备的数据包,指定标识用于指示数据包为发送给中继通信设备的数据包;或,对数据包进行解析,若数据包的目的地址包含指定前缀信息,则确定数据包为发送给中继通信设备的数据包,指定前缀信息用于指示第四数据包为发送给中继通信设备的数据包;或,对数据包进行解析,若数据包携带的完整性保护参数、中继通信设备标识、头压缩配置与存储的中继通信设备的接收配置参数匹配,则确定数据包为发送给中继通信设备的数据包。
可选地,中继通信设备的接收配置参数由基站的广播消息携带,或中继通信设备的接收配置参数由中继通信设备的广播消息携带,或中继通信设备的接收配置参数由网管系统配置。
本发明实施例提供的装置,通过判断监听到的数据包是发送给中继通信设备的数据包后,便可根据存储的接收配置参数接收该数据包,无需发送该数据包的用户设备额外的发送一份广播的数据包,避免了传输资源的浪费。
图13是本发明实施例提供的一种数据传输装置,参见图13,包括:发送模块1301。
其中,发送模块1301,用于广播针对中继通信设备的接收配置参数,中继通信设备的接收配置参数至少包括基站为中继通信设备配置的完整性保护参数、中继通信设备的中继通信设备标识和头压缩配置,由基站覆盖范围内的用户设备根据中继通信设备的接收配置参数,接收其他用户设备向中继通信设备发送的数据包。
可选地,完整性保护参数为媒介访问控制MAC层证书,或分组数据汇聚协议PDCP层证书,或PDCP层基于对称密钥的信息完整性检验MIC域。
本发明实施例提供的装置,通过广播中继通信设备的接收配置参数,使得基站覆盖范围内的所有用户设备均可获知中继通信设备的接收配置参数,并根据该接收配置参数接收其他用户设备发送给中继通信设备的单播数据包,无需发送该数据包的用户设备额外的发送一份广播的数据包,避免了传输资源的浪费。
图14是本发明实施例提供的一种数据传输装置,参见图14,包括:接收模块1401,处理模块1402和发送模块1403。
其中,接收模块1401与处理模块1402连接,用于根据基站配置的接收配置参数,接收用户设备发送的第五数据包,接收配置参数至少包括基站为中继通信设备配置的完整性保护参数、中继通信设备的中继通信设备标识和头压缩配置,中继通信设备标识用于指示第五数据包的目的中继通信设备为中继通信设备;处理模块1402与发送模块1403连接,用于根据完整性保护参数和头压缩配置对第五数据包进行处理,得到第六数据包;发送模块1403,用于将第六数据包发送至基站。
可选地,处理模块1402,用于根据完整性保护参数,对第五数据包进行完整性校验,并在完整性校验通过后根据头压缩配置,对第五数据包的包头进行解压缩,得到第六数据包。
可选地,完整性保护参数为媒介访问控制MAC层证书,或分组数据汇聚协议PDCP层证书,或PDCP层基于对称密钥的信息完整性检验MIC域。
可选地,发送模块1403,还用于广播基站配置的接收配置参数,使得用户设备在获知中继通信设备的接收配置参数后,根据中继通信设备的接收配置参数向中继通信设备发送数据包。
可选地,该装置还包括:
判断模块,用于判断第五数据包的接收功率是否大于最小功率门限;若第五数据包的接收功率大于最小功率门限,则执行根据完整性保护参数和头压缩配置对第五数据包进行处理以及后续发送步骤。
本发明实施例提供的装置,通过接收配置参数对用户设备发送的数据包进行解析后,发送给基站,使得在该用户设备通信范围外的其他用户设备也可接收到该用户设备发送的数据包,实现了用户设备之间的数据传输。
需要说明的是:上述实施例提供的数据传输装置在进行数据传输时,仅以上述各功能模块的划分进行举例说明,实际应用中,可以根据需要而将上述功能分配由不同的功能模块完成,即将装置的内部结构划分成不同的功能模块,以完成以上描述的全部或者部分功能。另外,上述实施例提供的数据传输装置与数据传输方法实施例属于同一构思,其具体实现过程详见方法实施例,这里不再赘述。
图15是本发明实施例提供的一种基站的结构示意图,参见图15,包括:接收器1501、发射器1502、存储器1503和处理器1504,接收器1501、发射器1502和存储器1503分别与处理器1504连接,存储器1503用于存储处理器可执行指令,处理器1504被配置为:
接收中继通信设备发送的数据包,该数据包携带发送数据包的用户设备标识和数据包标识,数据包标识用于唯一标识该数据包;根据接收该数据包之前所接收到的数据包的用户设备标识和数据包标识以及该数据包的用户设备标识和数据包标识,判断是否重复接收到由同一个用户设备发送的同一个数据包;如果判断该数据包不是重复接收到的由同一个用户设备发送的同一个数据包,则将该数据包转发给业务应用服务器。
可选地,处理器1504还被配置为:在指定时间窗或者缓存区内,判断接收该数据包之前所接收到的数据包的用户设备标识和数据包标识中是否存在该数据包的用户设备标识和数据包标识;若存在该数据包的用户设备标识和数据包标识,则确定重复接收到了由同一个用户设备发送的同一个数据包;其中,数据包标识为数据包的帧号或数据包的发送序列号。
可选地,指定时间窗的长度或者缓存区的大小,由接入网络的配置信令或者由网络管理系统进行配置。
本发明实施例提供的基站,通过对同一用户设备的具有同一数据包标识的 数据包进行去重处理后,发送至业务应用服务器,使得业务应用服务器接收到的数据包中不包含重复的数据包,因此业务应用服务器在向用户设备广播数据包时,大大降低了传输资源的开销,避免了传输资源的浪费。
图16是本发明实施例提供的一种中继通信设备的结构示意图,参见图16,包括:接收器1601、发射器1602、存储器1603和处理器1604,接收器1601、发射器1602和存储器1603分别与处理器1604连接,存储器1603用于存储处理器可执行指令,处理器1604被配置为:
接收用户设备发送的第一数据包,第一数据包携带用户设备的用户设备标识;为第一数据包添加第一数据包标识,得到第二数据包;将第二数据包发送至基站,由基站根据第一数据包标识和用户设备的用户设备标识采用基于帧号的去重方式进行数据包去重。
可选地,第一数据包标识为接收到第一数据包的帧号。
可选地,第一数据包的帧号为第一数据包发送时刻对应的D2D系统帧号DFN,或第一数据包的帧号为第一数据包发送时刻对应的基站的系统帧号。
可选地,处理器1604还被配置为:判断第一数据包的接收功率是否大于最小功率门限;若第一数据包的接收功率大于最小功率门限,则执行为第一数据包添加第一数据包标识以及后续发送步骤。
可选地,处理器1604还被配置为:接收基站发送的去重配置信息,去重配置信息用于指示基站采用的去重方式,相应地,若去重配置信息为第一去重配置信息,则在接收到用户设备发送的第一数据包后,执行为第一数据包添加第一数据包标识的步骤,第一去重配置信息指示的去重方式为基于帧号的去重。
可选地,处理器1604还被配置为:将第一数据包递交至应用层,并接收由应用层通过跨层原语方式发送的转发层选择信息,转发层选择信息用于指示基于应用层或通信层进行转发;若转发层选择信息指示基于应用层进行转发,则执行为第一数据包添加第一数据包标识以及后续发送步骤。
本发明实施例提供的中继通信设备,通过对接收到的数据包添加数据包标识,使得基站能够根据数据包标识对接收到的数据包进行去重,并将去重后的数据包发送至业务应用服务器,大大降低了业务应用服务器在向用户设备广播数据包时传输资源的开销,避免了传输资源的浪费。
本发明实施例提供了一种中继通信设备,包括:接收器、发射器、存储器和处理器,接收器、发射器和存储器分别与处理器连接,存储器用于存储处理器可执行指令,处理器被配置为:
接收用户设备发送的第三数据包,第三数据包携带用户设备的用户设备标识和第三数据包标识,第三数据包标识由用户设备在发送数据时添加;根据第三数据包的数据内容和第三数据包标识,生成第四数据包,并将第四数据包发送至基站,由基站根据第三数据包标识和用户设备的用户设备标识采用基于序列号的去重方式进行数据包去重。
可选地,第三数据包标识为第三数据包的发送序列号,发送序列号为用户设备维护的在指定数值范围内规律变化的数值。
可选地,处理器还被配置为:判断第三数据包的接收功率是否大于最小功率门限;若第三数据包的接收功率大于最小功率门限,则执行将第三数据包发送至基站的步骤。
可选地,处理器还被配置为:接收基站发送的去重配置信息,去重配置信息用于指示基站所采用的去重方式,相应地,若去重配置信息为第二去重配置信息,则在接收到用户设备发送的第三数据包后,执行根据第三数据包的数据内容和第三数据包标识,生成第四数据包以及后续发送步骤,第二去重配置信息指示的去重方式为基于序列号的去重。
可选地,处理器还被配置为:将第三数据包递交至应用层,并接收由应用层通过跨层原语方式发送的转发层选择信息,转发层选择信息用于指示基于应用层或通信层进行转发;若转发层选择信息指示基于应用层进行转发,则执行根据第三数据包的数据内容和第三数据包标识,生成第四数据包以及后续发送的步骤。
本发明实施例提供的中继通信设备,通过对用户设备发送的携带数据包标识的数据包进行重组,保留原有的数据包标识,使得基站能够根据接收到的数据包标识对数据包进行去重,并将去重后的数据包发送至业务应用服务器,大大降低了业务应用服务器在向用户设备广播数据包时传输资源的开销,避免了传输资源的浪费。
图17是本发明实施例提供的一种用户设备的结构示意图,参见图17,包 括:接收器1701、发射器1702、存储器1703和处理器1704,接收器1701、发射器1702和存储器1703分别与处理器1704连接,存储器1703用于存储处理器可执行指令,处理器1704被配置为:
获取待广播的数据;根据第三数据包标识和待广播的数据,生成第三数据包,第三数据包携带用户设备的用户设备标识和第三数据包标识;向中继通信设备发送第三数据包,由中继通信设备将第三数据包发送至基站。
可选地,第三数据包标识为第三数据包的发送序列号,发送序列号为用户设备维护的在指定数值范围内规律变化的数值。
可选地,处理器1704还被配置为:接收基站广播的去重配置信息,去重配置信息用于指示基站采用的去重方式,相应地,当去重配置信息为第二去重配置信息时,执行根据第三数据包标识和待广播的数据,生成第三数据包的步骤,第二去重配置信息指示的去重方式为基于序列号的去重。
本发明实施例提供的用户设备,通过在待广播数据中添加数据包标识,使得基站接收到由中继通信设备转发的数据包后,能够根据数据包标识对接收到的数据包进行去重,并将去重后的数据包发送至业务应用服务器,大大降低了业务应用服务器在向用户设备广播数据包时传输资源的开销,避免了传输资源的浪费。
本发明实施例提供了一种用户设备,包括:接收器、发射器、存储器和处理器,接收器、发射器和存储器分别与处理器连接,存储器用于存储处理器可执行指令,处理器被配置为:
获取待发送的数据;根据中继通信设备的接收配置参数和待发送的数据,生成第五数据包,第五数据包携带中继通信设备的中继通信设备标识,中继通信设备标识用于指示第五数据包的目的中继通信设备为中继通信设备;发送第五数据包。
可选地,第五数据包的包头携带指定标识,指定标识用于指示第五数据包为发送给中继通信设备的数据包,使得其他用户设备能够根据指定标识接收第五数据包;或,中继通信设备的中继通信设备标识包含指定前缀信息,指定前缀信息用于指示第五数据包为发送给中继通信设备的数据包,使得其他用户设备能够根据指定前缀信息接收第五数据包。
可选地,中继通信设备的接收配置参数至少包括基站为中继通信设备配置 的完整性保护参数、中继通信设备的中继通信设备标识和头压缩配置,完整性保护参数用于对待发送的数据进行数据完整性认证,中继通信设备的中继通信设备标识用于指示第四数据包的目的中继通信设备为中继通信设备,头压缩配置用于在生成第四数据包时对包头进行压缩。
可选地,完整性保护参数为媒介访问控制MAC层证书,或分组数据汇聚协议PDCP层证书,或PDCP层基于对称密钥的信息完整性检验MIC域。
本发明实施例提供的用户设备,通过向中继通信设备发送满足中继通信设备的接收配置参数的单播数据包,使得中继通信设备和拥有中继通信设备的接收配置参数的其他用户设备均可接收到该单播数据包,不必再向其他用户设备额外的发送广播数据包,避免了传输资源的浪费。
本发明实施例提供了一种用户设备,包括:接收器、发射器、存储器和处理器,接收器、发射器和存储器分别与处理器连接,存储器用于存储处理器可执行指令,处理器被配置为:
监听数据包;判断数据包是否为发送给中继通信设备的数据包;若数据包为发送给中继通信设备的数据包,则根据存储的中继通信设备的接收配置参数,接收数据包。
可选地,处理器被配置为:对数据包进行解析,若数据包的包头携带指定标识,则确定数据包为发送给中继通信设备的数据包,指定标识用于指示数据包为发送给中继通信设备的数据包;或,对数据包进行解析,若数据包的目的地址包含指定前缀信息,则确定数据包为发送给中继通信设备的数据包,指定前缀信息用于指示第四数据包为发送给中继通信设备的数据包;或,对数据包进行解析,若数据包携带的完整性保护参数、中继通信设备标识、头压缩配置与存储的中继通信设备的接收配置参数匹配,则确定数据包为发送给中继通信设备的数据包。
可选地,中继通信设备的接收配置参数由基站的广播消息携带,或中继通信设备的接收配置参数由中继通信设备的广播消息携带,或中继通信设备的接收配置参数由网管系统配置。
本发明实施例提供的用户设备,通过判断监听到的数据包是发送给中继通信设备的数据包后,便可根据存储的接收配置参数接收该数据包,无需发送该数据包的用户设备额外的发送一份广播的数据包,避免了传输资源的浪费。
本发明实施例提供了一种基站,包括:接收器、发射器、存储器和处理器,接收器、发射器和存储器分别与处理器连接,存储器用于存储处理器可执行指令,处理器被配置为:
广播针对中继通信设备的接收配置参数,中继通信设备的接收配置参数至少包括基站为中继通信设备配置的完整性保护参数、中继通信设备的中继通信设备标识和头压缩配置,由基站覆盖范围内的用户设备根据中继通信设备的接收配置参数,接收其他用户设备向中继通信设备发送的数据包。
可选地,完整性保护参数为媒介访问控制MAC层证书,或分组数据汇聚协议PDCP层证书,或PDCP层基于对称密钥的信息完整性检验MIC域。
本发明实施例提供的基站,通过广播中继通信设备的接收配置参数,使得基站覆盖范围内的所有用户设备均可获知中继通信设备的接收配置参数,并根据该接收配置参数接收其他用户设备发送给中继通信设备的单播数据包,无需发送该数据包的用户设备额外的发送一份广播的数据包,避免了传输资源的浪费。
本发明实施例提供了一种中继通信设备,包括:接收器、发射器、存储器和处理器,接收器、发射器和存储器分别与处理器连接,存储器用于存储处理器可执行指令,处理器被配置为:
根据基站配置的接收配置参数,接收用户设备发送的第五数据包,接收配置参数至少包括基站为中继通信设备配置的完整性保护参数、中继通信设备的中继通信设备标识和头压缩配置,中继通信设备标识用于指示第五数据包的目的中继通信设备为中继通信设备;根据完整性保护参数和头压缩配置对第五数据包进行处理,得到第六数据包;将第六数据包发送至基站。
可选地,处理器被配置为:根据完整性保护参数,对第五数据包进行完整性校验,并在完整性校验通过后根据头压缩配置,对第五数据包的包头进行解压缩,得到第六数据包。
可选地,完整性保护参数为媒介访问控制MAC层证书,或分组数据汇聚协议PDCP层证书,或PDCP层基于对称密钥的信息完整性检验MIC域。
可选地,处理器还被配置为:广播基站配置的接收配置参数,使得用户设备在获知中继通信设备的接收配置参数后,根据中继通信设备的接收配置参数 向中继通信设备发送数据包。
可选地,处理器还被配置为:判断第五数据包的接收功率是否大于最小功率门限;若第五数据包的接收功率大于最小功率门限,则执行根据完整性保护参数和头压缩配置对第五数据包进行处理以及后续发送步骤。
本发明实施例提供的中继设备,通过接收配置参数对用户设备发送的数据包进行解析后,发送给基站,使得在该用户设备通信范围外的其他用户设备也可接收到该用户设备发送的数据包,实现了用户设备之间的数据传输。
本领域普通技术人员可以理解实现上述实施例的全部或部分步骤可以通过硬件来完成,也可以通过程序来指令相关的硬件完成,所述的程序可以存储于一种计算机可读存储介质中,上述提到的存储介质可以是只读存储器,磁盘或光盘等。
以上所述仅为本发明的较佳实施例,并不用以限制本发明,凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。

Claims (62)

  1. 一种数据传输方法,其特征在于,所述方法包括:
    接收中继通信设备发送的数据包,所述数据包携带发送所述数据包的用户设备标识和数据包标识,所述数据包标识用于唯一标识所述数据包;
    根据接收所述数据包之前所接收到的数据包的用户设备标识和数据包标识以及所述数据包的用户设备标识和数据包标识,判断是否重复接收到由同一个用户设备发送的同一个数据包;
    如果判断所述数据包不是重复接收到的由同一个用户设备发送的同一个数据包,则将所述数据包转发给业务应用服务器。
  2. 根据权利要求1所述的方法,其特征在于,所述根据接收所述数据包之前所接收到的数据包的用户设备标识和数据包标识以及所述数据包的用户设备标识和数据包标识,判断是否重复接收到由同一个用户设备发送的同一个数据包包括:
    在指定时间窗或者缓存区内,判断所述接收所述数据包之前所接收到的数据包的用户设备标识和数据包标识中是否存在所述数据包的用户设备标识和数据包标识;
    若存在所述数据包的用户设备标识和数据包标识,则确定重复接收到了由同一个用户设备发送的同一个数据包;
    其中,数据包标识为数据包的帧号或数据包的发送序列号。
  3. 根据权利要2所述的方法,其特征在于:所述指定时间窗的长度或者缓存区的大小,由接入网络的配置信令或者由网络管理系统进行配置。
  4. 一种数据传输方法,其特征在于,所述方法包括:
    接收用户设备发送的第一数据包,所述第一数据包携带所述用户设备的用户设备标识;
    为所述第一数据包添加第一数据包标识,得到第二数据包;
    将所述第二数据包发送至基站。
  5. 根据权利要求4所述的方法,其特征在于,所述第一数据包标识为接收到所述第一数据包的帧号。
  6. 根据权利要求5所述的方法,其特征在于,所述第一数据包的帧号为所述第一数据包发送时刻对应的D2D系统帧号DFN,或所述第一数据包的帧号为所述第一数据包发送时刻对应的所述基站的系统帧号。
  7. 根据权利要求4所述的方法,其特征在于,所述接收用户设备发送的第一数据包之后,所述方法还包括:
    判断所述第一数据包的接收功率是否大于最小功率门限;
    若所述第一数据包的接收功率大于所述最小功率门限,则执行为所述第一数据包添加第一数据包标识以及后续发送步骤。
  8. 根据权利要求4所述的方法,其特征在于,所述接收用户设备发送的第一数据包之前,所述方法还包括:
    接收所述基站发送的去重配置信息,所述去重配置信息用于指示所述基站采用的去重方式,
    相应地,若所述去重配置信息为第一去重配置信息,则在接收到所述用户设备发送的所述第一数据包后,执行为所述第一数据包添加第一数据包标识的步骤,所述第一去重配置信息指示的去重方式为基于帧号的去重。
  9. 根据权利要求4所述的方法,其特征在于,所述接收用户设备发送的第一数据包之后,所述方法还包括:
    将所述第一数据包递交至应用层,并接收由所述应用层通过跨层原语方式发送的转发层选择信息,所述转发层选择信息用于指示基于应用层或通信层进行转发;
    若所述转发层选择信息指示基于应用层进行转发,则执行为所述第一数据包添加所述第一数据包标识以及后续发送步骤。
  10. 一种数据传输方法,其特征在于,所述方法包括:
    接收用户设备发送的第三数据包,所述第三数据包携带所述用户设备的用 户设备标识和第三数据包标识,所述第三数据包标识由所述用户设备在发送数据时添加;
    根据所述第三数据包的数据内容和所述第三数据包标识,生成第四数据包,并将所述第四数据包发送至基站。
  11. 根据权利要求10所述的方法,其特征在于,所述第三数据包标识为所述第三数据包的发送序列号,所述发送序列号为所述用户设备维护的在指定数值范围内规律变化的数值。
  12. 根据权利要求10所述的方法,其特征在于,所述接收用户设备发送的第三数据包之后,所述方法还包括:
    判断所述第三数据包的接收功率是否大于最小功率门限;
    若所述第三数据包的接收功率大于所述最小功率门限,则执行将所述第三数据包发送至所述基站的步骤。
  13. 根据权利要求10所述的方法,其特征在于,所述接收用户设备发送的第三数据包之前,所述方法还包括:
    接收所述基站发送的去重配置信息,所述去重配置信息用于指示所述基站所采用的去重方式,
    相应地,若所述去重配置信息为第二去重配置信息,则在接收到所述用户设备发送的所述第三数据包后,执行根据所述第三数据包的数据内容和所述第三数据包标识,生成第四数据包以及后续发送步骤,所述第二去重配置信息指示的去重方式为基于序列号的去重。
  14. 根据权利要求10所述的方法,其特征在于,所述接收用户设备发送的第三数据包之后,所述方法还包括:
    将所述第三数据包递交至应用层,并接收由所述应用层通过跨层原语方式发送的转发层选择信息,所述转发层选择信息用于指示基于应用层或通信层进行转发;
    若所述转发层选择信息指示基于应用层进行转发,则执行根据所述第三数据包的数据内容和所述第三数据包标识,生成第四数据包以及后续发送的步骤。
  15. 一种数据传输方法,其特征在于,所述方法包括:
    获取待广播的数据;
    根据第三数据包标识和所述待广播的数据,生成第三数据包,所述第三数据包携带用户设备的用户设备标识和第三数据包标识;
    向中继通信设备发送所述第三数据包。
  16. 根据权利要求15所述的方法,其特征在于,所述第三数据包标识为所述第三数据包的发送序列号,所述发送序列号为所述用户设备维护的在指定数值范围内规律变化的数值。
  17. 根据权利要求15所述的方法,其特征在于,所述获取待广播的数据之前,所述方法还包括:
    接收所述基站广播的去重配置信息,所述去重配置信息用于指示所述基站采用的去重方式,
    相应地,当所述去重配置信息为第二去重配置信息时,执行根据所述第三数据包标识和所述待广播的数据,生成所述第三数据包的步骤,所述第二去重配置信息指示的去重方式为基于序列号的去重。
  18. 一种数据传输方法,其特征在于,所述方法包括:
    获取待发送的数据;
    根据中继通信设备的接收配置参数和所述待发送的数据,生成第五数据包,所述第五数据包携带所述中继通信设备的中继通信设备标识,所述中继通信设备标识用于指示所述第五数据包的目的中继通信设备为所述中继通信设备;
    发送所述第五数据包。
  19. 根据权利要求18所述的方法,其特征在于,所述第五数据包的包头携带指定标识,所述指定标识用于指示所述第五数据包为发送给所述中继通信设备的数据包,使得其他用户设备能够根据所述指定标识接收所述第五数据包;或,
    所述中继通信设备的中继通信设备标识包含指定前缀信息,所述指定前缀 信息用于指示所述第五数据包为发送给所述中继通信设备的数据包,使得其他用户设备能够根据所述指定前缀信息接收所述第五数据包。
  20. 根据权利要求18所述的方法,其特征在于,所述中继通信设备的接收配置参数至少包括基站为所述中继通信设备配置的完整性保护参数、所述中继通信设备的中继通信设备标识和头压缩配置,所述完整性保护参数用于对所述待发送的数据进行数据完整性认证,所述中继通信设备的中继通信设备标识用于指示所述第四数据包的目的中继通信设备为所述中继通信设备,所述头压缩配置用于在生成所述第四数据包时对包头进行压缩。
  21. 根据权利要求20所述的方法,其特征在于,所述完整性保护参数为媒介访问控制MAC层证书,或分组数据汇聚协议PDCP层证书,或PDCP层基于对称密钥的信息完整性检验MIC域。
  22. 一种数据传输方法,其特征在于,所述方法包括:
    监听数据包;
    判断所述数据包是否为发送给中继通信设备的数据包;
    若所述数据包为发送给中继通信设备的数据包,则根据存储的所述中继通信设备的接收配置参数,接收所述数据包。
  23. 根据权利要求22所述的方法,其特征在于,所述判断所述数据包是否为所述其他用户设备发送给中继通信设备的数据包包括:
    对所述数据包进行解析,若所述数据包的包头携带指定标识,则确定所述数据包为发送给所述中继通信设备的数据包,所述指定标识用于指示所述数据包为发送给所述中继通信设备的数据包;或,
    对所述数据包进行解析,若所述数据包的目的地址包含指定前缀信息,则确定所述数据包为发送给所述中继通信设备的数据包,所述指定前缀信息用于指示所述第四数据包为发送给所述中继通信设备的数据包;或,
    对所述数据包进行解析,若所述数据包携带的完整性保护参数、中继通信设备标识、头压缩配置与存储的所述中继通信设备的接收配置参数匹配,则确定所述数据包为发送给所述中继通信设备的数据包。
  24. 根据权利要求22所述的方法,其特征在于,所述中继通信设备的接收配置参数由基站的广播消息携带,或所述中继通信设备的接收配置参数由中继通信设备的广播消息携带,或所述中继通信设备的接收配置参数由网管系统配置。
  25. 一种数据传输方法,其特征在于,所述方法包括:
    广播针对中继通信设备的接收配置参数,所述中继通信设备的接收配置参数至少包括基站为所述中继通信设备配置的完整性保护参数、所述中继通信设备的中继通信设备标识和头压缩配置,由基站覆盖范围内的用户设备根据所述中继通信设备的接收配置参数接收其他用户设备向所述中继通信设备发送的数据包。
  26. 根据权利要求25所述的方法,其特征在于,所述完整性保护参数为媒介访问控制MAC层证书,或分组数据汇聚协议PDCP层证书,或PDCP层基于对称密钥的信息完整性检验MIC域。
  27. 一种数据传输方法,其特征在于,所述方法包括:
    根据基站配置的接收配置参数,接收用户设备发送的第五数据包,所述接收配置参数至少包括所述基站为中继通信设备配置的完整性保护参数、所述中继通信设备的中继通信设备标识和头压缩配置,所述中继通信设备标识用于指示所述第五数据包的目的中继通信设备为所述中继通信设备;
    根据所述完整性保护参数和所述头压缩配置对所述第五数据包进行处理,得到第六数据包;
    将所述第六数据包发送至基站。
  28. 根据权利要求27所述的方法,其特征在于,所述根据所述完整性保护参数和所述头压缩配置对所述第五数据包进行处理,得到第六数据包包括:
    根据所述完整性保护参数,对所述第五数据包进行完整性校验,并在完整性校验通过后根据所述头压缩配置,对所述第五数据包的包头进行解压缩,得到所述第六数据包。
  29. 根据权利要求27所述的方法,其特征在于,所述完整性保护参数为媒介访问控制MAC层证书,或分组数据汇聚协议PDCP层证书,或PDCP层基于对称密钥的信息完整性检验MIC域。
  30. 根据权利要求27所述的方法,其特征在于,所述方法还包括:
    广播基站配置的接收配置参数,使得用户设备在获知中继通信设备的接收配置参数后,根据所述中继通信设备的接收配置参数向所述中继通信设备发送数据包。
  31. 根据权利要求27所述的方法,其特征在于,所述接收用户设备发送的第五数据包之后,所述方法还包括:
    判断所述第五数据包的接收功率是否大于最小功率门限;
    若所述第五数据包的接收功率大于所述最小功率门限,则执行根据所述完整性保护参数和所述头压缩配置对所述第五数据包进行处理以及后续发送步骤。
  32. 一种数据传输装置,其特征在于,所述装置包括:
    接收模块,用于接收中继通信设备发送的数据包,所述数据包携带发送所述数据包的用户设备标识和数据包标识,所述数据包标识用于唯一标识所述数据包;
    判断模块,用于根据接收所述数据包之前所接收到的数据包的用户设备标识和数据包标识以及所述数据包的用户设备标识和数据包标识,判断是否重复接收到由同一个用户设备发送的同一个数据包;
    发送模块,用于如果判断所述数据包不是重复接收到的由同一个用户设备发送的同一个数据包,则将所述数据包转发给业务应用服务器。
  33. 根据权利要求32所述的装置,其特征在于,所述判断模块,用于在指定时间窗或者缓存区内,判断所述接收所述数据包之前所接收到的数据包的用户设备标识和数据包标识中是否存在所述数据包的用户设备标识和数据包标识;若存在所述数据包的用户设备标识和数据包标识,则确定重复接收到了由 同一个用户设备发送的同一个数据包;其中,数据包标识为数据包的帧号或数据包的发送序列号。
  34. 根据权利要33所述的装置,其特征在于:所述指定时间窗的长度或者缓存区的大小,由接入网络的配置信令或者由网络管理系统进行配置。
  35. 一种数据传输装置,其特征在于,所述装置包括:
    接收模块,用于接收用户设备发送的第一数据包,所述第一数据包携带所述用户设备的用户设备标识;
    生成模块,用于为所述第一数据包添加第一数据包标识,得到第二数据包;
    发送模块,用于将所述第二数据包发送至基站。
  36. 根据权利要求35所述的装置,其特征在于,所述第一数据包标识为接收到所述第一数据包的帧号。
  37. 根据权利要求36所述的装置,其特征在于,所述第一数据包的帧号为所述第一数据包发送时刻对应的D2D系统帧号DFN,或所述第一数据包的帧号为所述第一数据包发送时刻对应的所述基站的系统帧号。
  38. 根据权利要求35所述的装置,其特征在于,所述装置还包括:
    判断模块,用于判断所述第一数据包的接收功率是否大于最小功率门限;若所述第一数据包的接收功率大于所述最小功率门限,则执行为所述第一数据包添加第一数据包标识以及后续发送步骤。
  39. 根据权利要求35所述的装置,其特征在于,所述接收模块,还用于接收所述基站发送的去重配置信息,所述去重配置信息用于指示所述基站采用的去重方式,相应地,若所述去重配置信息为第一去重配置信息,则在接收到所述用户设备发送的所述第一数据包后,执行为所述第一数据包添加第一数据包标识的步骤,所述第一去重配置信息指示的去重方式为基于帧号的去重。
  40. 根据权利要求35所述的装置,其特征在于,所述接收模块,还用于将 所述第一数据包递交至应用层,并接收由所述应用层通过跨层原语方式发送的转发层选择信息,所述转发层选择信息用于指示基于应用层或通信层进行转发;若所述转发层选择信息指示基于应用层进行转发,则执行为所述第一数据包添加所述第一数据包标识以及后续发送步骤。
  41. 一种数据传输装置,其特征在于,所述装置包括:
    接收模块,用于接收用户设备发送的第三数据包,所述第三数据包携带所述用户设备的用户设备标识和第三数据包标识,所述第三数据包标识由所述用户设备在发送数据时添加;
    生成模块,用于根据所述第三数据包的数据内容和所述第三数据包标识,生成第四数据包,
    发送模块,用于将所述第四数据包发送至基站。
  42. 根据权利要求41所述的装置,其特征在于,所述第三数据包标识为所述第三数据包的发送序列号,所述发送序列号为所述用户设备维护的在指定数值范围内规律变化的数值。
  43. 根据权利要求41所述的装置,其特征在于,所述装置还包括:
    判断模块,用于判断所述第三数据包的接收功率是否大于最小功率门限;若所述第三数据包的接收功率大于所述最小功率门限,则执行将所述第三数据包发送至所述基站的步骤。
  44. 根据权利要求41所述的装置,其特征在于,所述接收模块,还用于接收所述基站发送的去重配置信息,所述去重配置信息用于指示所述基站所采用的去重方式,相应地,若所述去重配置信息为第二去重配置信息,则在接收到所述用户设备发送的所述第三数据包后,执行根据所述第三数据包的数据内容和所述第三数据包标识,生成第四数据包以及后续发送步骤,所述第二去重配置信息指示的去重方式为基于序列号的去重。
  45. 根据权利要求41所述的装置,其特征在于,所述接收模块,还用于将所述第三数据包递交至应用层,并接收由所述应用层通过跨层原语方式发送的 转发层选择信息,所述转发层选择信息用于指示基于应用层或通信层进行转发;若所述转发层选择信息指示基于应用层进行转发,则执行根据所述第三数据包的数据内容和所述第三数据包标识,生成第四数据包以及后续发送的步骤。
  46. 一种数据传输装置,其特征在于,所述装置包括:
    获取模块,用于获取待广播的数据;
    生成模块,用于根据第三数据包标识和所述待广播的数据,生成第三数据包,所述第三数据包携带用户设备的用户设备标识和第三数据包标识;
    发送模块,用于向中继通信设备发送所述第三数据包。
  47. 根据权利要求46所述的装置,其特征在于,所述第三数据包标识为所述第三数据包的发送序列号,所述发送序列号为所述用户设备维护的在指定数值范围内规律变化的数值。
  48. 根据权利要求46所述的装置,其特征在于,所述装置还包括:
    接收模块,用于接收所述基站广播的去重配置信息,所述去重配置信息用于指示所述基站采用的去重方式,相应地,当所述去重配置信息为第二去重配置信息时,执行根据所述第三数据包标识和所述待广播的数据,生成所述第三数据包的步骤,所述第二去重配置信息指示的去重方式为基于序列号的去重。
  49. 一种数据传输装置,其特征在于,所述装置包括:
    获取模块,用于获取待发送的数据;
    生成模块,用于根据中继通信设备的接收配置参数和所述待发送的数据,生成第五数据包,所述第五数据包携带所述中继通信设备的中继通信设备标识,所述中继通信设备标识用于指示所述第五数据包的目的中继通信设备为所述中继通信设备;
    发送模块,用于发送所述第五数据包。
  50. 根据权利要求49所述的装置,其特征在于,所述第五数据包的包头携带指定标识,所述指定标识用于指示所述第五数据包为发送给所述中继通信设备的数据包,使得其他用户设备能够根据所述指定标识接收所述第五数据包; 或,
    所述中继通信设备的中继通信设备标识包含指定前缀信息,所述指定前缀信息用于指示所述第五数据包为发送给所述中继通信设备的数据包,使得其他用户设备能够根据所述指定前缀信息接收所述第五数据包。
  51. 根据权利要求49所述的装置,其特征在于,所述中继通信设备的接收配置参数至少包括基站为所述中继通信设备配置的完整性保护参数、所述中继通信设备的中继通信设备标识和头压缩配置,所述完整性保护参数用于对所述待发送的数据进行数据完整性认证,所述中继通信设备的中继通信设备标识用于指示所述第四数据包的目的中继通信设备为所述中继通信设备,所述头压缩配置用于在生成所述第四数据包时对包头进行压缩。
  52. 根据权利要求51所述的装置,其特征在于,所述完整性保护参数为媒介访问控制MAC层证书,或分组数据汇聚协议PDCP层证书,或PDCP层基于对称密钥的信息完整性检验MIC域。
  53. 一种数据传输装置,其特征在于,所述装置包括:
    监听模块,用于监听数据包;
    判断模块,用于判断所述数据包是否为发送给中继通信设备的数据包;
    接收模块,用于若所述数据包为发送给中继通信设备的数据包,则根据存储的所述中继通信设备的接收配置参数,接收所述数据包。
  54. 根据权利要求53所述的装置,其特征在于,所述判断模块,用于对所述数据包进行解析,若所述数据包的包头携带指定标识,则确定所述数据包为发送给所述中继通信设备的数据包,所述指定标识用于指示所述数据包为发送给所述中继通信设备的数据包;或,对所述数据包进行解析,若所述数据包的目的地址包含指定前缀信息,则确定所述数据包为发送给所述中继通信设备的数据包,所述指定前缀信息用于指示所述第四数据包为发送给所述中继通信设备的数据包;或,对所述数据包进行解析,若所述数据包携带的完整性保护参数、中继通信设备标识、头压缩配置与存储的所述中继通信设备的接收配置参数匹配,则确定所述数据包为发送给所述中继通信设备的数据包。
  55. 根据权利要求53所述的装置,其特征在于,所述中继通信设备的接收配置参数由基站的广播消息携带,或所述中继通信设备的接收配置参数由中继通信设备的广播消息携带,或所述中继通信设备的接收配置参数由网管系统配置。
  56. 一种数据传输装置,其特征在于,所述装置包括:
    发送模块,用于广播针对中继通信设备的接收配置参数,所述中继通信设备的接收配置参数至少包括基站为所述中继通信设备配置的完整性保护参数、所述中继通信设备的中继通信设备标识和头压缩配置,由基站覆盖范围内的用户设备根据所述中继通信设备的接收配置参数接收其他用户设备向所述中继通信设备发送的数据包。
  57. 根据权利要求56所述的装置,其特征在于,所述完整性保护参数为媒介访问控制MAC层证书,或分组数据汇聚协议PDCP层证书,或PDCP层基于对称密钥的信息完整性检验MIC域。
  58. 一种数据传输装置,其特征在于,所述装置包括:
    接收模块,用于根据基站配置的接收配置参数,接收用户设备发送的第五数据包,所述接收配置参数至少包括所述基站为中继通信设备配置的完整性保护参数、所述中继通信设备的中继通信设备标识和头压缩配置,所述中继通信设备标识用于指示所述第五数据包的目的中继通信设备为所述中继通信设备;
    处理模块,用于根据所述完整性保护参数和所述头压缩配置对所述第五数据包进行处理,得到第六数据包;
    发送模块,用于将所述第六数据包发送至基站。
  59. 根据权利要求58所述的装置,其特征在于,所述处理模块,用于根据所述完整性保护参数,对所述第五数据包进行完整性校验,并在完整性校验通过后根据所述头压缩配置,对所述第五数据包的包头进行解压缩,得到所述第六数据包。
  60. 根据权利要求58所述的装置,其特征在于,所述完整性保护参数为媒介访问控制MAC层证书,或分组数据汇聚协议PDCP层证书,或PDCP层基于对称密钥的信息完整性检验MIC域。
  61. 根据权利要求58所述的装置,其特征在于,所述发送模块,还用于广播基站配置的接收配置参数,使得用户设备在获知中继通信设备的接收配置参数后,根据所述中继通信设备的接收配置参数向所述中继通信设备发送数据包。
  62. 根据权利要求58所述的装置,其特征在于,所述装置还包括:
    判断模块,用于判断所述第五数据包的接收功率是否大于最小功率门限;若所述第五数据包的接收功率大于所述最小功率门限,则执行根据所述完整性保护参数和所述头压缩配置对所述第五数据包进行处理以及后续发送步骤。
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