WO2022067785A1 - Procédé de communication et appareil de communication - Google Patents

Procédé de communication et appareil de communication Download PDF

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Publication number
WO2022067785A1
WO2022067785A1 PCT/CN2020/119702 CN2020119702W WO2022067785A1 WO 2022067785 A1 WO2022067785 A1 WO 2022067785A1 CN 2020119702 W CN2020119702 W CN 2020119702W WO 2022067785 A1 WO2022067785 A1 WO 2022067785A1
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WIPO (PCT)
Prior art keywords
data
terminal device
data packet
packet
control field
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PCT/CN2020/119702
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English (en)
Chinese (zh)
Inventor
李秉肇
官磊
李胜钰
陈磊
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华为技术有限公司
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Priority to PCT/CN2020/119702 priority Critical patent/WO2022067785A1/fr
Publication of WO2022067785A1 publication Critical patent/WO2022067785A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems

Definitions

  • the present application relates to the field of communication technologies, and in particular, to a communication method and a communication device.
  • terminal device 1 when a terminal device sends data to another terminal device, usually terminal device 1 first sends the data to the serving base station of terminal device 1, the serving base station of terminal device 1 sends the data to the core network device, and the core network device The data sent by the terminal device 1 is then sent to the serving base station of the terminal device 2. The process of sending data from the terminal device 2 to the terminal device 1 is also the same. Therefore, in the case where the terminal equipment 1 and the terminal equipment 2 exchange data, the data of the terminal equipment 1 and the data of the terminal equipment 2 occupy one downlink resource respectively. In a communication system, since downlink resources are limited, how to reduce downlink resource overhead is a problem that needs to be solved.
  • the present application provides a communication method and a communication apparatus, which can reduce downlink resource overhead during communication between terminal devices.
  • a communication method in a first aspect, can be performed by a network device, the method includes: receiving a first data packet from a first terminal device and a second data packet from a second terminal device, the first data packet The first data packet is included, and the second data packet includes the second data.
  • each layer of the protocol stack performs corresponding processing on the first data.
  • the first data passes through the SDAP layer, the PDCP layer, the RLC layer and the MAC layer in sequence, and corresponding packet headers are added to each layer respectively.
  • the SDAP layer and the RLC layer have a transmission mode that does not add packet headers.
  • the network device encodes the first data and the second data to generate third data.
  • the network device sends the third data to the first terminal device and/or the second terminal device.
  • the encoding manner may include an exclusive OR operation, that is, performing an exclusive OR on the first data and the second data to generate the third data.
  • the network device encodes the first data sent by the first terminal device and the second data sent by the second terminal device to generate third data
  • the third data is sent to the first terminal device and/or the second terminal device, so as to realize mutual communication between the first terminal device and the second terminal device and save downlink resources.
  • the first data packet includes a first packet header
  • the second data packet includes a second packet header
  • the first packet header includes a first sequence number
  • the second packet header includes a second sequence number.
  • the third data is sent through a third data packet, and the third data packet includes the first sequence number and the second sequence number.
  • the first sequence number and the second sequence number may be PDCP sequence numbers.
  • the first terminal device when the first terminal device receives the third data packet, it can determine the first sequence number in the third data packet according to the The uplink data associated with the third data is the first data. Thus, the first terminal device decodes the third data according to the first data to generate the second data.
  • the second terminal device when the second terminal device receives the third data packet, it can determine that the uplink data associated with the third data is the second data according to the second sequence number in the third data packet. Thus, the second terminal device decodes the third data according to the second data to generate the first data.
  • the third data is sent through a third data packet, where the third data packet includes a first integrity protection domain of the first terminal device and a second integrity protection domain of the second terminal device .
  • the first integrity protection domain is a bit sequence generated by the network device according to the key of the first terminal device and the content of the third data packet.
  • the second integrity protection domain is a bit sequence generated by the network device according to the key of the second terminal device and the content of the third data packet.
  • the first terminal device may verify whether the third data packet is modified according to the first integrity protection domain and the key of the first terminal device.
  • the second terminal device can verify whether the third data packet is modified according to the second integrity protection domain and the key of the second terminal device, thereby improving the reliability of data transmission.
  • the third data is sent through a common transmission channel.
  • the common transmission channel can be understood as a public data radio bearer.
  • the public data radio bearer is a section of bearer between the terminal device and the air interface of the access network device, and is used to bear user plane data.
  • the network device sends the third data to the first terminal device and/or the second terminal device through the common data radio bearer.
  • the network device may send the third data to the two terminal devices through only one radio bearer, thereby realizing the mutual communication between the first terminal device and the second terminal device and saving downlink resources.
  • the first quality of service flow and the second quality of service flow are mapped to a common transmission channel, wherein the first data packet belongs to the first quality of service flow, and the second data packet belongs to the second quality of service flow quality of service flow.
  • the network device encodes the uplink data received in the first QoS stream and the second QoS stream, and sends the encoded data to the first terminal device and/or the second terminal device through a common transmission channel.
  • the first terminal device and/or the second terminal device can know which coded data of upstream quality of service streams are received on the common transmission channel.
  • parameters of the common transmission channel are sent to the first terminal device and/or the second terminal device, where the parameters of the common transmission channel include one or more of the following information:
  • the common transmission channel configuration information includes one or more of a radio bearer identifier, a packet data convergence layer protocol configuration parameter or a radio link control configuration parameter, and the common transmission channel configuration information is used for the first terminal device and/or Or the second terminal device performs common transmission channel configuration.
  • Wireless network temporary identification includes one or more of the group wireless network temporary identification, the public wireless network temporary identification or the paired wireless network temporary identification, which is used for the first terminal device and/or the second terminal device to perform in the public network. Data reception on the transmission channel.
  • the partial bandwidth information including partial bandwidth ID, frequency location and other information, is used for the first terminal device and/or the second terminal device to receive data on the common transmission channel.
  • the upstream data channel information of the first data packet and/or the second data packet includes the upstream Qos flow associated with the first data packet and/or the second data packet One or more of the ID, the upstream logical channel ID associated with the first data packet and/or the second data packet, or the upstream DRB ID associated with the first data packet and/or the second data packet.
  • Indication information is used to instruct the first terminal device to correspond to the first control field and/or to instruct the second terminal device to correspond to the second control field, where the first control field includes the first serial number and/or the first integrity protection field, the second control field includes the second sequence number and/or the second integrity protection field.
  • the network device sends the public transmission channel parameters to the first terminal device and/or the second terminal device, and the public transmission channel parameters are used by the first terminal device and/or the second terminal device to receive the first terminal device and/or the second terminal device on the public transmission channel.
  • three data packets and obtain the corresponding integrity protection domain, serial number and other information from the third data packet, so that the first terminal device determines the first data associated with the third data, and the second terminal device determines the third data associated with the third data.
  • Two data The first terminal device may decode the third data according to the first data to obtain the second data, and the second terminal device may decode the third data according to the second data to obtain the first data.
  • the network device may be an access network device, and the access network device sends the first data and the second data to the core network device.
  • the access network device receives the fourth data packet and the fifth data packet sent by the core network device, where the fourth data packet includes the first data, and the fifth data packet includes the second data.
  • the access network device encodes the first data in the fourth data packet and the second data in the fifth data packet to form third data.
  • the access network device after receiving the first data and the second data, the access network device further sends the first data and the second data to the core network device, and the core network device then sends it to the access network device, which can The communication security between the first terminal device and the second terminal device is enhanced.
  • the network device may be an access network device, the access network device determines that the data in the fourth data packet is the same as the data in the first data packet, and the access network device determines that the fifth data packet is the same as the data in the first data packet.
  • the data in the data packet is the same as the data in the second data packet.
  • the access network device receives the fourth data packet and determines that the data in the fourth data packet is the same as the first data, and it can be considered that the data in the fourth data packet sent by the core network device is the first data packet.
  • the access network device receives the fifth data packet and determines that the data in the fifth data packet is the same as the second data. It can be considered that the data in the fifth data packet sent by the core network device is the second data sent by the second terminal device. . This determines the data that needs to be encoded.
  • the network device may be an access network device, the access network device compares the fourth data packet with the data packet received from the first terminal device, and/or the access network device compares the fourth data packet with the data packet received from the first terminal device, and/or the access network device
  • the fifth data packet is compared with the data packet received from the second terminal device. By comparing the fourth data packet with the data packet received from the first terminal device, it is determined that the data in the fourth data packet is the same as the first data. By comparing the fifth data packet with the data packet received from the second terminal device, it is determined that the data in the fifth data packet is the same as the second data.
  • the access network device since the original data in the fourth data packet is data sent by the first terminal device to the second terminal device, the access network device will receive the fourth data packet from the data channel of the second terminal device. Therefore, after receiving the fourth data packet from the data channel of the second terminal device, the access network device can know that the data in the fourth data packet comes from the first terminal device, and the access network device only needs to associate the fourth data packet with the first terminal device. By comparing the data packets received from the first terminal device, it can be confirmed which part of the data in the fourth data packet is the same. Likewise, the access network device only needs to compare the data in the fifth data packet with the data packet received from the second terminal device.
  • the network device may be an access network device
  • the fourth data packet includes a first sequence number of the first data packet
  • the access network device determines the fourth data packet according to the first sequence number
  • the data in is the same as the data in the first packet.
  • the fifth data packet includes a second sequence number of the second data packet, and it is determined according to the second sequence number that the data in the fifth data packet is the same as the data in the second data packet.
  • the access network device when sending the first data to the core network device, the access network device will also send the first sequence number in the first data packet to the core network device, and the core network device receives the first data and The first sequence number associated with the first data.
  • the core network device When sending the first data to the access network device through the fourth data packet, the core network device also sends the first sequence number to the access network device through the fourth data packet.
  • the access network device may determine, according to the first sequence number, that the data in the fourth data packet is the same as the data in the first data packet.
  • the access network device when the access network device sends the second data to the core network device, it will also send the second sequence number in the second data packet to the core network device, and the core network device receives the second data and associates the second data with the second data. the second serial number.
  • the core network device When sending the second data to the access network device through the fifth data packet, the core network device also sends the second sequence number to the access network device through the fifth data packet.
  • the access network device may determine, according to the second sequence number, that the data in the fifth data packet is the same as the data in the second data packet.
  • the destination address of the first data packet is the second terminal device
  • the destination address of the second data packet is the first terminal device.
  • the first terminal device and the second terminal device are in the same cell or the service network devices of the first terminal device and the second terminal device are the same network device.
  • the target address here may be one or more of an internet protocol address (IP address), a media access control address (MAC address), or an internet protocol address and a port number.
  • the service network device may be an access network device, and the first terminal device and the second terminal device communicate through the same access network device.
  • the first terminal device and the second terminal device communicate with each other through the same network device, the first terminal device sends a first data packet to the network device, and the destination address of the first data packet is the second terminal equipment.
  • the second terminal device sends a second data packet to the same network device, and the destination address of the second data packet is the first terminal device.
  • the network device encodes the first data from the first terminal device and the second data from the second terminal device to generate third data, and sends the third data to the first terminal device and/or the second terminal device.
  • Information exchange between the first terminal device and the second terminal device can be realized only through one data transmission channel, thereby saving downlink resource overhead.
  • the network device may be an access network device or a core network device, the network device detects the serving cell and/or the serving network device of the first terminal device, and the network device detects the service cell of the second terminal device. Serving cell and/or serving network equipment. The network device determines that the serving cell of the first terminal device and the serving cell of the second terminal device are the same serving cell, and/or determines that the serving network device of the first terminal device and the serving network device of the second terminal device are the same network device .
  • the first terminal device and the second terminal device may be referred to as paired terminal devices.
  • the second terminal device If the destination address of the sent second data packet is the first terminal device, and the first terminal device and the second terminal device are in the same cell or connected to the same service network device, the first terminal device and the second terminal device satisfy the pairing condition. Pairing detection can be performed by access network equipment or core network equipment. When it is detected that the first terminal device and the second terminal device meet the pairing condition, the first data packet of the first terminal device and the second data packet of the second terminal device can be determined as a pair of encoding objects.
  • a communication method is provided.
  • the communication method can be performed by a first terminal device, and the method includes: the first terminal device sends a first data packet to a network device, where the first data packet includes first data.
  • the first terminal device receives a third data packet from the network device, where the third data packet includes third data.
  • the first terminal device decodes the third data according to the first data to generate the second data.
  • a decoding manner in which the first terminal device decodes the third data according to the first data may be: the first terminal device performs an exclusive OR operation on the first data and the third data to generate the second data.
  • the network device encodes the first data sent by the first terminal device and the second data sent by the second terminal device to form third data , and send the encoded third data to the first terminal device and/or the second terminal device.
  • the first terminal device may decode the third data according to the first data, thereby acquiring the second data. Thereby, mutual communication between the first terminal device and the second terminal device is realized, and downlink resources are saved.
  • the third data packet includes a first control field and a second control field
  • the first control field includes a first integrity protection field and/or a first sequence number
  • the second control field include a second integrity protection field and/or a second sequence number.
  • the first terminal device determines a third control field, where the third control field is one of the first control field or the second control field.
  • the first terminal device receives a third data packet, and the third data packet includes a first control field and a second control field.
  • the first terminal device finds a control field corresponding to the first terminal device from the first control field and the second control field, and the control field may be referred to as a third control field.
  • the third control field is one of the first control field and the second control field.
  • the first terminal device may verify the integrity protection validity of the third data according to the third control field, and determine the first data associated with the third data.
  • the first terminal device determining the third control field includes: the first terminal device determining a third serial number, where the third serial number is one of the first serial number or the second serial number .
  • the first terminal device determines the first data according to the third serial number.
  • one of the first sequence number and the second sequence number is the sequence number in the first data packet sent by the first terminal device to the access network device, and the first sequence number and the second sequence number are The other is the sequence number in the second data packet sent by the second terminal device to the access network device.
  • the third data packet sent by the access network device to the first terminal device includes the first sequence number and the second sequence number.
  • the first terminal device identifies which serial number belongs to the first terminal device among the first serial number and the second serial number, so as to determine the first data associated with the third data according to the third serial number. Further, the third data is decoded according to the first data to generate the second data.
  • the first terminal device determining the third control field includes: the first terminal device determining a third integrity protection domain, where the third integrity protection domain is the first integrity protection domain or the third integrity protection domain. Two integrity protection domains. The first terminal device verifies the integrity protection validity of the third data according to the third integrity protection domain.
  • one of the first integrity protection domain and the second integrity protection domain is generated by the access network device according to the key of the first terminal device and the third data.
  • the other of the first integrity protection domain and the second integrity protection domain is generated by the access network device according to the key of the second terminal device and the third data.
  • the third data packet sent by the access network device to the first terminal device includes the first integrity protection domain and the second integrity protection domain.
  • the first terminal device identifies which integrity protection domain belongs to the first terminal device in the first integrity protection domain and the second integrity protection domain, so as to verify the integrity protection validity of the third data according to the third integrity protection domain .
  • the first terminal device receives indication information sent by the network device, where the indication information is used to indicate the third control field.
  • the network device can send the indication information through the parameters of the common transmission channel.
  • the first terminal device receives the parameters of the public transmission channel, and obtains the indication information from the parameters of the public transmission channel.
  • the first terminal device receives the indication information, where the indication information is used to indicate the third control field, and the first terminal device may determine the third control field according to the indication information. Therefore, the first terminal device determines, according to the indication information, which control field in the first control field and the second control field is the control field corresponding to the first terminal device.
  • the first terminal device receives the parameters of the common transmission channel sent by the network device.
  • the receiving of the third data packet by the first terminal device includes: the first terminal device receiving the third data packet on the common transmission channel according to the parameters of the common transmission channel.
  • the network device sends the third data packet through the common transmission channel, and the first terminal device receives the third data packet from the common transmission channel. Therefore, only one radio bearer is used to implement mutual communication between the first terminal device and other terminal devices, thereby saving downlink resources.
  • the parameters of the common transmission channel include one or more of the following information:
  • the common transmission channel configuration information includes one or more of a radio bearer identifier, a packet data convergence layer protocol configuration parameter or a radio link control configuration parameter, and the common transmission channel configuration information is used by the first terminal device for public Transmission channel configuration.
  • the wireless network temporary identification which includes one or more of the group wireless network temporary identification, the public wireless network temporary identification or the paired wireless network temporary identification, is used for the first terminal device to receive data on the public transmission channel.
  • the partial bandwidth information including partial bandwidth ID, frequency location and other information, is used for the first terminal device to receive data on the public transmission channel.
  • Indication information the indication information is used to indicate that the first terminal device corresponds to a control field, and the control field includes a serial number and/or an integrity protection field.
  • the first terminal device receives the public transmission channel parameters sent by the network device, and the public transmission channel parameters are used by the first terminal device to receive the third data packet on the public transmission channel, and obtain the corresponding data packet from the third data packet.
  • information such as the integrity protection domain, serial number, etc., so that the first terminal device determines the first data associated with the third data.
  • the first terminal device may decode the third data according to the first data to obtain the second data.
  • a communication apparatus which may be a network device, including: a transceiver module for receiving a first data packet from a first terminal device and a second data packet from a second terminal device, the first A data packet includes first data, and a second data packet includes second data.
  • each layer of the protocol stack performs corresponding processing on the first data.
  • the first data passes through the SDAP layer, the PDCP layer, the RLC layer and the MAC layer in sequence, and corresponding packet headers are added to each layer respectively.
  • the SDAP layer and the RLC layer have a transmission mode that does not add packet headers.
  • the processing module is used for encoding the first data and the second data to generate the third data.
  • a transceiver module configured to send third data to the first terminal device and/or the second terminal device.
  • the encoding manner may include an exclusive OR operation, that is, performing an exclusive OR on the first data and the second data to generate the third data.
  • the network device encodes the first data sent by the first terminal device and the second data sent by the second terminal device to form third data
  • the encoded third data is sent to the first terminal device and/or the second terminal device, so as to realize mutual communication between the first terminal device and the second terminal device and save downlink resources.
  • the first data packet includes a first packet header
  • the second data packet includes a second packet header
  • the first packet header includes a first sequence number
  • the second packet header includes a second sequence number.
  • the third data is sent through a third data packet, and the third data packet includes the first sequence number and the second sequence number.
  • the first sequence number and the second sequence number may be sequence numbers in the PDCP packet header.
  • the first terminal device by adding the first sequence number and the second sequence number to the header of the third data packet, when the first terminal device receives the third data packet, The number can determine that the uplink data associated with the third data is the first data.
  • the first terminal device encodes the first data and the third data to obtain the second data.
  • the second terminal device receives the third data packet, it can determine that the uplink data associated with the third data is the second data according to the second sequence number in the header of the third data packet.
  • the second terminal device encodes the second data and the third data to obtain the first data.
  • the transceiver module is configured to send third data through a third data packet, where the third data packet includes the first integrity protection domain of the first terminal device and the second data packet of the second terminal device. Integrity Protection Domain.
  • the first integrity protection domain is a bit sequence generated by the network device according to the key of the first terminal device and the content of the third data packet.
  • the second integrity protection domain is a bit sequence generated by the network device according to the key of the second terminal device and the content of the third data packet.
  • the first terminal device may verify whether the third data packet is modified according to the first integrity protection domain and the key of the first terminal device, and the second terminal device may verify whether the third data packet is modified according to the second integrity protection domain and the second The key of the terminal device verifies whether the third data packet is modified, thereby improving the reliability of data transmission.
  • the transceiver module is configured to send the third data through a common transmission channel.
  • the common transmission channel can be understood as a public data radio bearer, and the public data radio bearer is a segment of the bearer between the terminal device and the air interface of the access network device, and is used to carry user plane data.
  • the network device sends the third data to the first terminal device and/or the second terminal device through the common data radio bearer.
  • the network device may send the third data to the two terminal devices through only one radio bearer, thereby realizing the mutual communication between the first terminal device and the second terminal device and saving downlink resources.
  • the processing module is configured to map the first quality of service flow and the second quality of service flow to a common transmission channel, wherein the first data packet belongs to the first quality of service flow, and the second data packet belongs to the first quality of service flow. The packet belongs to the second quality of service flow.
  • the network device encodes the first quality of service stream and the uplink data received in the second quality of service and sends them to the first terminal device and/or the second terminal device through a common transmission channel.
  • the first terminal device and/or the second terminal device can know which coded data of upstream quality of service streams are received on the common transmission channel.
  • the transceiver module is configured to send parameters of the common transmission channel to the first terminal device and/or the second terminal device, where the parameters of the common transmission channel include one or more of the following information:
  • the common transmission channel configuration information includes one or more of a radio bearer identifier, a packet data convergence layer protocol configuration parameter or a radio link control configuration parameter, and the common transmission channel configuration information is used for the first terminal device and/or Or the second terminal device performs common transmission channel configuration.
  • Wireless network temporary identification includes one or more of the group wireless network temporary identification, the public wireless network temporary identification or the paired wireless network temporary identification, which is used for the first terminal device and/or the second terminal device to perform in the public network. Data reception on the transmission channel.
  • the partial bandwidth information including partial bandwidth ID, frequency location and other information, is used for the first terminal device and/or the second terminal device to receive data on the common transmission channel.
  • the indication information is used to instruct the first terminal device to correspond to the first control field and/or to instruct the second terminal device to correspond to the second control field, where the first control field includes the first serial number and/or the first integrity protection field, the second control field includes the second sequence number and/or the second integrity protection field.
  • the network device sends the public transmission channel parameters to the first terminal device and/or the second terminal device, and the public transmission channel parameters are used by the first terminal device and/or the second terminal device to receive the first terminal device and/or the second terminal device on the public transmission channel.
  • three data packets and obtain the corresponding integrity protection domain, serial number and other information from the third data packet, so that the first terminal device determines the first data associated with the third data, and the second terminal device determines the third data associated with the third data.
  • Two data The first terminal device may decode the third data according to the first data to obtain the second data, and the second terminal device may decode the third data according to the second data to obtain the first data.
  • the transceiver module is configured to send the first data and the second data to the core network device, the transceiver module is configured to receive the fourth data packet and the fifth data packet sent by the core network device, and the first data packet and the fifth data packet are sent by the core network device.
  • the four data packets include the first data, and the fifth data packet includes the second data.
  • the third data is formed by encoding the first data in the fourth data packet and the second data in the fifth data packet.
  • the network device may be an access network device, and after receiving the first data and the second data, the access network device further sends the first data and the second data to the core network device, and the core network device further sends the first data and the second data to the core network device. and then send it to the access network device, which can enhance the communication security between the first terminal device and the second terminal device.
  • the processing module is configured to determine that the data in the fourth data packet is the same as the data in the first data packet, and the processing module is configured to determine that the data in the fifth data packet is the same as the second data The data in the package is the same.
  • the network device may be an access network device.
  • the access network device receives the fourth data packet and determines that the data in the fourth data packet is the same as the first data. It can be considered that the first data sent by the core network device The data in the four data packets is the first data sent by the first terminal device.
  • the access network device receives the fifth data packet and determines that the data in the fifth data packet is the same as the second data. It can be considered that the data in the fifth data packet sent by the core network device is the second data sent by the second terminal device. . This determines the data that needs to be encoded.
  • the processing module is configured to compare the fourth data packet with the data packet received from the first terminal device, and/or the processing module is configured to compare the fifth data packet with the data packet received from the second terminal Comparison of packets received by the device. By comparing the fourth data packet with the data packet received from the first terminal device, it is determined that the data in the fourth data packet is the same as the first data. By comparing the fifth data packet with the data packet received from the second terminal device, it is determined that the data in the fifth data packet is the same as the second data.
  • the network device may be an access network device. Since the original data in the fourth data packet is data sent by the first terminal device to the second terminal device, the access network device will send the data from the second terminal device to the second terminal device. The data channel receives the fourth packet. Therefore, after receiving the fourth data packet from the data channel of the second terminal device, the access network device can know that the data in the fourth data packet comes from the first terminal device, and the access network device only needs to associate the fourth data packet with the first terminal device. By comparing the data packets received from the first terminal device, it can be confirmed which part of the data in the fourth data packet is the same. Likewise, the access network device only needs to compare the data in the fifth data packet with the data packet received from the second terminal device.
  • the fourth data packet includes a first sequence number of the first data packet, and the processing module is configured to determine, according to the first sequence number, between the data in the fourth data packet and the data in the first data packet data are the same.
  • the fifth data packet includes a second sequence number of the second data packet, and the processing module is configured to determine, according to the second sequence number, that the data in the fifth data packet is the same as the data in the second data packet.
  • the network device may be an access network device, and when sending the first data to the core network device, the access network device will also send the first sequence number in the first data packet to the core network device, The core network device receives the first data and the first serial number associated with the first data. When sending the first data to the access network device through the fourth data packet, the core network device also sends the first sequence number to the access network device through the fourth data packet. The access network device may determine, according to the first sequence number, that the data in the fourth data packet is the same as the data in the first data packet.
  • the access network device when the access network device sends the second data to the core network device, it will also send the second sequence number in the second data packet to the core network device, and the core network device receives the second data and associates the second data with it. the second serial number.
  • the core network device When sending the second data to the access network device through the fifth data packet, the core network device also sends the second sequence number to the access network device through the fifth data packet.
  • the access network device may determine, according to the second sequence number, that the data in the fifth data packet is the same as the data in the second data packet.
  • the destination address of the first data packet is the second terminal device
  • the destination address of the second data packet is the first terminal device.
  • the first terminal device and the second terminal device are in the same cell or the service network devices of the first terminal device and the second terminal device are the same network device.
  • the target address here may be one or more of an internet protocol address (IP address), a media access control address (MAC address), or an internet protocol address and a port number.
  • the service network device may be an access network device, and the first terminal device and the second terminal device communicate through the same access network device.
  • the first terminal device and the second terminal device communicate with each other through the same access network device, and the first terminal device sends a first data packet to the access network device, the destination address of the first data packet for the second terminal device.
  • the second terminal device sends a second data packet to the same access network device, and the destination address of the second data packet is the first terminal device.
  • the network device encodes the first data from the first terminal device and the second data from the second terminal device to generate third data, and sends the third data to the first terminal device and/or the second terminal device.
  • Information exchange between the first terminal device and the second terminal device can be realized only through one data transmission channel, thereby saving downlink resource overhead.
  • the processing module is configured to detect the serving cell and/or the serving network device of the first terminal device, and the processing module is configured to detect the serving cell and/or the serving network device of the second terminal device.
  • the processing module is configured to determine that the serving cell of the first terminal device and the serving cell of the second terminal device are the same serving cell, and/or the processing module is configured to determine the serving network device of the first terminal device and the serving network of the second terminal device The device is the same network device.
  • the first terminal device and the second terminal device may be referred to as paired terminal devices.
  • the second terminal device If the destination address of the sent second data packet is the first terminal device, and the first terminal device and the second terminal device are in the same cell or connected to the same service network device, the first terminal device and the second terminal device satisfy the pairing condition. Pairing detection can be performed by access network equipment or core network equipment. When it is detected that the first terminal device and the second terminal device meet the pairing condition, the first data packet of the first terminal device and the second data packet of the second terminal device can be determined as a pair of encoding objects.
  • a communication apparatus may be a first terminal device, and includes: a transceiver module for sending a first data packet, where the first data packet includes first data.
  • the transceiver module is configured to receive a third data packet from the network device, where the third data packet includes third data.
  • the processing module is used for decoding the third data according to the first data to generate the second data.
  • the decoding used by the processing module to decode the third data according to the first data may be: the processing module is used to perform an exclusive OR operation on the first data and the third data to generate the second data.
  • the network device encodes the first data sent by the first terminal device and the second data sent by the second terminal device to form third data , and send the encoded third data to the first terminal device and/or the second terminal device.
  • the first terminal device may decode the third data according to the first data, thereby acquiring the second data. Thereby, mutual communication between the first terminal device and the second terminal device is realized, and downlink resources are saved.
  • the third data packet includes a first control field and a second control field
  • the first control field includes a first integrity protection field and/or a first sequence number
  • the second control field include a second integrity protection field and/or a second sequence number.
  • the processing module is configured to determine a third control field, where the third control field is one of the first control field or the second control field.
  • the first terminal device receives a third data packet, and the third data packet includes a first control field and a second control field.
  • the first terminal device finds a control field corresponding to the first terminal device from the first control field and the second control field, and the control field may be referred to as a third control field.
  • the third control field is one of the first control field and the second control field.
  • the first terminal device may verify the integrity protection validity of the third data according to the third control field, and determine the first data associated with the third data.
  • the processing module configured to determine the third control field includes: the processing module is configured to determine a third serial number, where the third serial number is one of the first serial number or the second serial number .
  • the processing module is used for determining the first data according to the third serial number.
  • one of the first sequence number and the second sequence number is the sequence number in the first data packet sent by the first terminal device to the access network device, and the first sequence number and the second sequence number are The other is the sequence number in the second data packet sent by the second terminal device to the access network device.
  • the third data packet sent by the access network device to the first terminal device includes the first sequence number and the second sequence number.
  • the first terminal device identifies which serial number belongs to the first terminal device among the first serial number and the second serial number, so as to determine the first data associated with the third data according to the third serial number. Further, the third data is decoded according to the first data to generate the second data.
  • the processing module configured to determine the third control field includes: the processing module is configured to determine a third integrity protection domain, where the third integrity protection domain is the first integrity protection domain or the third integrity protection domain. Two integrity protection domains. The first terminal device verifies the integrity protection validity of the third data according to the third integrity protection domain.
  • one of the first integrity protection domain and the second integrity protection domain is generated by the access network device according to the key of the first terminal device and the third data.
  • the other of the first integrity protection domain and the second integrity protection domain is generated by the access network device according to the key of the second terminal device and the third data.
  • the third data packet sent by the access network device to the first terminal device includes the first integrity protection domain and the second integrity protection domain.
  • the first terminal device identifies which integrity protection domain belongs to the first terminal device in the first integrity protection domain and the second integrity protection domain, so as to verify the integrity protection validity of the third data according to the third integrity protection domain .
  • the transceiver module is configured to receive indication information sent by the network device, where the indication information is used to indicate the third control field.
  • the network device can send the indication information through the parameters of the common transmission channel.
  • the first terminal device receives the parameters of the public transmission channel, and obtains the indication information from the parameters of the public transmission channel.
  • the first terminal device receives the indication information, where the indication information is used to indicate the third control field, and the first terminal device may determine the third control field according to the first indication information. Therefore, the first terminal device determines, according to the indication information, which control field in the first control field and the second control field is the control field corresponding to the first terminal device.
  • the transceiver module is configured to receive parameters of the common transmission channel sent by the network device.
  • the transceiver module configured to receive the third data packet includes: the transceiver module is configured to receive the third data packet on the common transmission channel according to the parameters of the common transmission channel.
  • the network device sends the third data packet through the common transmission channel, and the first terminal device receives the third data packet from the common transmission channel. Therefore, only one radio bearer is used to implement mutual communication between the first terminal device and other terminal devices, thereby saving downlink resources.
  • the parameters of the common transmission channel include one or more of the following information:
  • the common transmission channel configuration information includes one or more of a radio bearer identifier, a packet data convergence layer protocol configuration parameter or a radio link control configuration parameter, and the common transmission channel configuration information is used by the first terminal device for public Transmission channel configuration.
  • the wireless network temporary identification which includes one or more of the group wireless network temporary identification, the public wireless network temporary identification or the paired wireless network temporary identification, is used for the first terminal device to receive data on the public transmission channel.
  • the partial bandwidth information including partial bandwidth ID, frequency location and other information, is used for the first terminal device to receive data on the public transmission channel.
  • Indication information the indication information is used to indicate that the first terminal device corresponds to a control field, and the control field includes a serial number and/or an integrity protection field.
  • the first terminal device receives the public transmission channel parameters sent by the network device, and the public transmission channel parameters are used by the first terminal device to receive the third data packet on the public transmission channel, and obtain the corresponding data packet from the third data packet.
  • information such as the integrity protection domain, serial number, etc., so that the first terminal device determines the first data associated with the third data.
  • the first terminal device may decode the third data according to the first data to obtain the second data.
  • a fifth aspect provides a computer-readable storage medium comprising instructions that, when run on a computer, cause the computer to perform the method of implementing any possible implementation of the first aspect.
  • a sixth aspect provides a computer-readable storage medium comprising instructions that, when run on a computer, cause the computer to perform the method of implementing any possible implementation of the second aspect.
  • a seventh aspect provides a communication device, the communication device includes a memory and a processor, the memory is used for storing instructions, the processor is used for executing the instructions stored in the memory, and the processing of the instructions stored in the memory is Execution causes the processor to perform the method of any possible implementation of the first aspect.
  • An eighth aspect provides a communication apparatus, the communication apparatus includes a memory and a processor, the memory is used for storing instructions, the processor is used for executing the instructions stored in the memory, and the processing of the instructions stored in the memory is Execution causes the processor to perform the method of any possible implementation of the second aspect.
  • a ninth aspect provides a communication system, including the communication device of the fifth aspect and the communication device of the sixth aspect.
  • a tenth aspect provides a computer program product comprising instructions, the computer program product is used to store a computer program, when the computer program is run on a computer, the computer is made to perform any possible implementation of the first aspect above method in method.
  • An eleventh aspect provides a computer program product comprising instructions, the computer program product is used to store a computer program, when the computer program is run on a computer, the computer is made to perform any possible implementation of the second aspect above. method in the implementation.
  • FIG. 1 is a schematic diagram of a protocol stack structure of a network device and a terminal device provided by an embodiment of the present application;
  • FIG. 2 is a schematic diagram of a network architecture to which an embodiment of the present application is applicable;
  • FIG. 3 is a flowchart of a communication method provided by an embodiment of the present application.
  • FIG. 5 is a flowchart of a communication method provided by a second embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • FIG. 7 is another schematic structural diagram of a communication device provided by an embodiment of the present application.
  • FIG. 8 is another schematic structural diagram of a communication device provided by an embodiment of the present application.
  • FIG. 9 is another schematic structural diagram of a communication device provided by an embodiment of the present application.
  • Terminal device It can be a wireless terminal device that can receive scheduling and instruction information of network devices.
  • the wireless terminal device can be a device that provides voice and/or data connectivity to users, or a handheld device with wireless connection function, or a connection other processing equipment to the wireless modem.
  • Terminal equipment can communicate with one or more core networks or the Internet via a radio access network (RAN), and the terminal equipment can be a mobile terminal equipment, such as a mobile phone (or "cellular" phone, mobile phone (mobile phone), computer and data cards, for example, may be portable, pocket, hand-held, computer built-in or vehicle mounted mobile devices that exchange language and/or data with the radio access network.
  • RAN radio access network
  • Wireless terminal equipment may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station (MS), a remote station, an access point ( access point (AP), remote terminal (remote terminal), access terminal (access terminal), user terminal (user terminal), user agent (user agent), subscriber station (SS), user terminal equipment (customer premises equipment, CPE), terminal (terminal), user equipment (user equipment, UE), mobile terminal (mobile terminal, MT), etc.
  • the terminal device may also be a wearable device and a next-generation communication system, for example, a terminal device in a 5G communication system or a terminal device in a future evolved public land mobile network (PLMN).
  • PLMN public land mobile network
  • Network device It can be a device in a wireless network.
  • a network device can be a radio access network (RAN) node (or device) that connects a terminal device to a wireless network, also known as a base station.
  • RAN equipment are: generation Node B (gNodeB), transmission reception point (TRP), evolved Node B (evolved Node B, eNB), wireless network in the 5G communication system Controller (radio network controller, RNC), Node B (Node B, NB), base station controller (base station controller, BSC), base transceiver station (base transceiver station, BTS), home base station (for example, home evolved NodeB, Or home Node B, HNB), base band unit (base band unit, BBU), or wireless fidelity (wireless fidelity, Wi-Fi) access point (access point, AP), etc.
  • RNC radio network controller
  • Node B Node B
  • BSC base station controller
  • base transceiver station base transceiver station
  • BTS home
  • the network device may include a centralized unit (centralized unit, CU) node, or a distributed unit (distributed unit, DU) node, or a RAN device including a CU node and a DU node.
  • the network device may be other devices that provide wireless communication functions for the terminal device.
  • the embodiments of the present application do not limit the specific technology and specific device form adopted by the network device. For convenience of description, in this embodiment of the present application, a device that provides a wireless communication function for a terminal device is referred to as a network device.
  • FIG. 1 is a schematic diagram of a protocol stack structure of a network device and a terminal device.
  • the dotted line indicates that data is sent from the network device to the terminal device. It can be understood that this is only schematic, and the direction of data transmission may also be from the terminal device to the network device.
  • the control plane protocol stack structure may include a radio resource control (RRC) layer, a service data adaptation protocol (SDAP) layer, a packet data convergence layer protocol (Packet Data Convergence Protocol) , PDCP) layer, radio link control (radio link control, RLC) layer, media access control (media Access Link control, MAC) and physical layer and so on.
  • RRC radio resource control
  • SDAP service data adaptation protocol
  • PDCP packet data convergence layer protocol
  • RLC radio link control
  • media access control media Access Link control
  • MAC media Access Link control
  • the physical layer is located at the lowest layer (layer 1), the MAC layer, RLC layer, PDCP layer and SDAP layer belong to the second layer (layer 2), and the RRC layer belongs to the third layer (layer 3).
  • the data first arrives at the PDCP layer of the network device, and then is transmitted to the RLC layer and the MAC layer after being processed by the PDCP layer of the network device. After being processed, it is sent from the physical layer and transmitted to the terminal device through the air interface. Then, each protocol layer on the terminal device side sequentially performs corresponding processing on the data packets according to the processing sequence opposite to that of the network device.
  • the processing of data packets by various layers can be visually combined, which is called wireless bearer. For each data in the wireless bearer, it needs to be processed by each layer, and each layer has corresponding functions. entity to perform corresponding functions, such as the PDCP entity of the PDCP layer.
  • Each radio bearer configuration will contain a PDCP entity, and at the same time, the radio bearer configuration will be associated with at least one RLC entity, and each RLC entity corresponds to a logical channel.
  • the SDAP layer is responsible for mapping data from the core network to different bearers.
  • SDAP Secure Digital
  • PDCP Packet Control Protocol
  • RLC Radio Link Control
  • MAC packet headers need to be added before the original data is transmitted at the physical layer.
  • some of the headers are optional.
  • SDAP and RLC have transmission methods without headers.
  • PDCP, SDAP and original data packets are in one-to-one correspondence.
  • the RLC may cut a PDCP packet, and the MAC may cascade and send multiple RLC packets.
  • system and “network” in the embodiments of the present application may be used interchangeably.
  • “At least one” means one or more, and “plurality” means two or more.
  • “And/or”, which describes the association relationship of the associated objects, means that there can be three kinds of relationships, for example, A and/or B, which can mean: the existence of A alone, the existence of A and B at the same time, and the existence of B alone, where A, B can be singular or plural.
  • the character “/” generally indicates that the associated objects are an “or” relationship.
  • “At least one item(s) below” or similar expressions thereof refer to any combination of these items, including any combination of single item(s) or plural items(s). For example "at least one of A, B and C” includes A, B, C, AB, AC, BC or ABC.
  • ordinal numbers such as “first” and “second” mentioned in the embodiments of the present application are used to distinguish multiple objects, and are not used to limit the order, sequence, priority or importance of multiple objects degree.
  • first threshold and the second threshold are only for distinguishing different thresholds, and do not indicate the difference in priority or importance of the two thresholds.
  • FIG. 2 is a schematic diagram of a network architecture to which an embodiment of the present application is applied.
  • the terminal equipment 231 and the terminal equipment 232 can be connected to a radio access network (RAN) equipment 210 and a core network (core network, CN) equipment 220, wherein the RAN equipment 210 is used to connect the terminal
  • the device 231 and the terminal device 232 are connected to the wireless network, and the CN device 220 is used to manage the terminal device and provide a gateway for communication with the external network.
  • the terminal device 231 and the terminal device 232 send communication data to each other.
  • the CN device 220 may be an access and mobility management function (AMF) entity, a session management function (SMF) entity or User plane function (user plane function, UPF) entity, etc.
  • AMF access and mobility management function
  • SMF session management function
  • UPF User plane function
  • the CN device 220 may be a mobility management entity (mobility management entity, MME) and a serving gateway (serving gateway) , S-GW) and so on.
  • MME mobility management entity
  • serving gateway serving gateway
  • the network architecture shown in Figure 2 above can be applied to communication systems of various radio access technologies (RATs), such as 5G (or new radio (NR)) communication systems, or It is a transition system between the LTE communication system and the 5G communication system.
  • the transition system can also be called a 4.5G communication system, and of course it can also be a future communication system following 5G.
  • the network architecture and service scenarios described in the embodiments of the present application are for the purpose of illustrating the technical solutions of the embodiments of the present application more clearly, and do not constitute limitations on the technical solutions provided by the embodiments of the present application.
  • the evolution of the network architecture and the emergence of new service scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.
  • the first terminal device and the second terminal device communicate with each other, that is, the first terminal device wants to send the first data to the second terminal device, and the second terminal device wants to send the second data to the first terminal device.
  • Terminal Equipment The network device receives the first data sent by the first terminal device and the second data sent by the second terminal device, and performs network coding on the first data and the second data to form third data.
  • the network device sends the third data to the first terminal device and/or the second terminal device.
  • the first terminal device receives the third data, and performs network coding on the first data and the third data to obtain the second data.
  • the second terminal device receives the third data, and performs network coding on the second data and the third data to obtain the first data.
  • the network device does not need to send the second data and the first data to the first terminal device and the second terminal device on the two downlink resources, respectively, By encoding the first data and the second data to form the third data, it is only necessary to send the third data to the first terminal device and the second terminal device through one downlink resource, thus reducing the overhead of downlink resources.
  • FIG. 3 is a flowchart of a communication method provided by an embodiment of the present application.
  • the method of the embodiment of the present application includes:
  • the network device receives a first data packet sent by a first terminal device, where the first data packet includes first data, and the network device receives a second data packet sent by a second terminal device, where the second data packet includes second data.
  • each layer of the protocol stack performs corresponding processing on the first data.
  • the first data passes through the SDAP layer, the PDCP layer, the RLC layer, and the MAC layer, and corresponding packet headers are added to each layer respectively.
  • the SDAP layer and the RLC layer have a transmission mode that does not add packet headers.
  • each layer of the protocol stack performs corresponding processing on the second data.
  • the second data passes through the SDAP layer, the PDCP layer, the RLC layer and the MAC layer, and corresponding packet headers are added to each layer respectively.
  • the SDAP layer and the RLC layer have a transmission mode that does not add packet headers.
  • the network device receives the first data packet and the second data packet to obtain the first data and the second data.
  • the network device encodes the first data and the second data to generate third data.
  • the network device obtains the third data after XORing the first data and the second data.
  • the first data and the second data may also be encoded by other network coding methods such as fountain codes to generate the third data.
  • the network device sends third data to the first terminal device and/or the second terminal device.
  • the network device generates third data after encoding the first data and the second data, and the network device sends the third data to the first terminal device and/or the second terminal device.
  • the network device does not need to send the second data and the first data to the first terminal device and the second terminal device respectively, and only needs to send the third data to realize the first terminal device and the second terminal device. Intercommunication between two terminal devices.
  • the first terminal device decodes the third data according to the first data to generate the second data, and/or the second terminal device decodes the third data according to the second data to generate the first data.
  • the first terminal device obtains the second data sent by the second terminal device
  • the second terminal device obtains the first data sent by the first terminal device.
  • the process for the first terminal device to decode the third data according to the first data to generate the second data may be as follows: the first terminal device performs an exclusive OR operation on the first data and the third data to generate the second data.
  • the process for the second terminal device to decode the third data according to the second data to generate the first data may be as follows: the second terminal device performs an exclusive OR operation on the second data and the third data to generate the first data.
  • the network device encodes the first data sent by the first terminal device and the second data sent by the second terminal device to form third data, and send the encoded third data to the first terminal device and/or the second terminal device.
  • the first terminal device decodes the third data according to the first data to generate the second data
  • the second terminal device decodes the third data according to the second data to generate the first data.
  • the embodiments of the present application further save downlink resources while realizing the mutual communication between the first terminal device and the second terminal device.
  • the network device may be an access network device, the first terminal device and the second terminal device communicate with each other, and the first terminal device and the second terminal device may be connected to the same access network device.
  • the first terminal device and the second terminal device may be referred to as paired terminal devices.
  • the core network device or the access network device may perform pairing detection on the terminal device, and check the detected devices that meet the conditions.
  • Figure 4 is a flowchart of a communication method provided by the first embodiment of the present application, and the process will be described below with reference to steps 401 to 402.
  • the detection of the paired terminal device may be performed by the core network device or the access network device.
  • the detection of paired terminal devices may be performed by core network devices.
  • the core network device detects the target address communicated by the terminal device, and determines whether the following conditions are met. When the detection result meets the conditions 1 and 2, it can be considered that the two terminal devices meet the pairing conditions. It is assumed that the detected terminal devices include terminal device 1, terminal device 2, terminal device 3 . . . terminal device n. After the core network device detects the terminal device, it is determined that the terminal device 1 and the terminal device 2 meet the conditions 1 and 2.
  • Condition 1 and Condition 2 can be expressed as:
  • Condition 1 The destination address of the data packet sent by terminal equipment 1 is terminal equipment 2, and the destination address of the data packet sent by terminal equipment 2 is also terminal equipment 1.
  • the target address here may be one or more of an internet protocol address (IP address), a media access control address (MAC address), or an internet protocol address and a port number.
  • IP address internet protocol address
  • MAC address media access control address
  • the destination address of the data packet sent by terminal equipment 1 is terminal equipment 2, indicating that terminal equipment 1 wants to send the data packet to terminal equipment 2, and the destination address of the data packet sent by terminal equipment 2 is terminal equipment 1, indicating that terminal equipment 2 wants to send the data packet. This data packet is to be sent to end device 1.
  • the serving cell of terminal device 1 and the serving cell of terminal device 2 are the same serving cell, and/or the serving network device of terminal device 1 and the serving network device of terminal device 2 are the same serving network device.
  • the serving network device may be an access network device.
  • the access network device may report the serving cell and serving network device information of the terminal device participating in the communication to the core network device.
  • the core network device detects the destination address of the first data packet of the first terminal device and the destination address of the second data packet of the second terminal device, and determines the destination address of the first data packet of the first terminal device.
  • the destination address is the second terminal device
  • the destination address of the second data packet of the second terminal device is the first terminal device.
  • the core network device detects the serving cell and/or serving network device of the first terminal device, detects the serving cell and/or serving network device of the second terminal device, and determines that the serving cell of the first terminal device and the serving cell of the second terminal device are The same serving cell and/or the core network device determines that the serving network device of the first terminal device and the serving network device of the second terminal device are the same serving network device.
  • FIG. 4 shows that the pairing detection of the terminal device is performed by the core network device
  • the access network device can also perform the detection of the paired terminal device.
  • the access network device needs to detect The destination address of the data packet is used to determine which end devices are paired end devices.
  • the first terminal device and the second terminal device meet the conditions 1 and 2, and it can be determined that the first terminal device and the second terminal device can be paired.
  • the access network device can determine the pairing information of the terminal devices according to the detection result of the core network device or the detection result of the access network device itself.
  • the pairing information of the terminal equipment may be: the first quality of service flow (Quality of Service Flow, QoS) of the first terminal equipment Flow) and the second quality of service flow of the second terminal device.
  • the pairing information of the terminal device may further include: identifier (Identifier, ID) information of the first terminal device and the second terminal device, or the same group flag may be set for the context information of the two paired terminal devices, according to the two The group tag of the two end devices determines that the two end devices are paired end devices. When the paired terminal device is marked in a group marking manner, the ID information of the terminal device may not be required.
  • the access network device can determine that the first terminal device and the second terminal device are paired terminal devices according to the pairing information of the terminal device.
  • the core network device may send the detected pairing information of the terminal device to the access network device.
  • the access network device sends the parameters of the common transmission channel to the first terminal device and/or the second terminal device.
  • the access network device establishes a common transmission channel, and the common transmission channel is used for sending third data to the first terminal device and/or the second terminal device.
  • the common transmission channel can be understood as a common data radio bearer (Common Data Radio Bearer, common DRB).
  • DRB is a segment of the bearer between the terminal device and the air interface of the access network device, which is used to carry user plane data.
  • the access network device sends the third data to the first terminal device and the second terminal device through the common DRB.
  • the access network device maps the first QoS flow and the second QoS flow to the common DRB.
  • the first data packet belongs to the first quality of service flow
  • the second data packet belongs to the second quality of service flow.
  • the QoS flow is an end-to-end data flow that satisfies a set of QoS configurations. It is the finest quality management granularity in the 5G system.
  • a data flow with the same QoS attribute can be called a QoS flow.
  • the first data packet may belong to a data packet in the data flow, so the meaning of the first data packet belonging to the first quality of service flow is that the first data packet belongs to a data packet in the first data flow, and the first data packet belongs to a data packet in the first data flow.
  • a data flow satisfies the same QoS attribute, so the first data flow can be called the first quality of service flow.
  • the second data packet belongs to the second quality of service flow.
  • the access network device maps the first QoS stream and the second QoS stream to the common DRB, that is, the access network device performs network coding on the uplink data received in the first QoS stream and the second QoS stream and passes the common DRB.
  • DRBs are sent to the two terminal devices. According to this mapping relationship, the terminal can know which uplink data network-encoded data of the uplink QoS flow are received on the DRB.
  • the parameters of the common transmission channel are used by the first terminal device and/or the second terminal device to receive the third data.
  • the parameters of the public transport channel include one or more of the following information:
  • the common transmission channel configuration information includes one or more of a radio bearer identifier, a packet data convergence layer protocol configuration parameter or a radio link control configuration parameter;
  • Radio Network Temporary Identifier (RNTI)
  • BWP Bandwidth Part
  • Uplink data channel information of the first data packet and/or the second data packet
  • the indication information is used to instruct the first terminal device to associate with the first control field and/or to instruct the second terminal device to associate with the second control field, where the first control field includes the first serial number and/or the first integrity protection Indication field, the second control field includes a second sequence number and/or a second integrity protection indication field.
  • the common transmission channel configuration information is used for the first terminal device and/or the second terminal device to configure the common transmission channel.
  • the wireless network temporary identification includes one or more of the group wireless network temporary identification, the public wireless network temporary identification or the paired wireless network temporary identification, which is used for the first terminal device and/or the second terminal device to perform data on the public transmission channel take over.
  • the partial bandwidth information includes information such as partial bandwidth ID, frequency location, etc., and is used for data reception on the common transmission channel by the first terminal device and/or the second terminal device.
  • the uplink data channel information of the first data packet and/or the second data packet includes: the uplink QoS flow ID associated with the first data packet and/or the second data packet, the uplink associated with the first data packet and/or the second data packet
  • the logical channel ID, or one or more of the uplink DRB IDs associated with the first data packet and/or the second data packet, and the uplink data channel information of the first data packet and/or the second data packet is used for the first terminal device
  • the second terminal device determines the first data packet and the second data packet sent to the access network device, so that the first terminal device encodes the first data and the third data to form the second data, and/or uses The second data and the third data are encoded at the second terminal device to form the first data.
  • the indication information is used to instruct the terminal device to associate with the first control field and/or the second terminal device to associate with the second control field.
  • the first control field includes a first sequence number SN1 and/or a first integrity protection field
  • the second control field includes a second sequence number SN2 and a second integrity protection field.
  • the third data packet may include two sequence numbers SN1 and SN2 and/or two integrity protection domains, a first integrity protection domain and a second integrity protection domain, which are respectively associated with the two integrity protection domains A first terminal device and a second terminal device.
  • the first sequence number SN1 is used by the first terminal device to determine the first data associated with the third data packet
  • the second sequence number SN2 is used by the second terminal device to determine the second data associated with the third data packet.
  • the first integrity protection field is used for the first terminal device to verify whether the third data is modified according to the key
  • the second integrity protection field is used for the second terminal device to verify whether the third data is modified according to the key. Therefore, the first terminal device needs to identify its own first serial number SN1 and the first integrity protection domain, and the second terminal device needs to identify its own second serial number SN2 and the second integrity protection domain.
  • the first terminal device can determine the first serial number SN1 and/or the first integrity protection domain according to the indication information, and the second terminal device can determine the second serial number SN2 and/or the second integrity protection domain according to the indication information.
  • the access network device receives the first data packet sent by the first terminal device, where the first data packet includes the first data.
  • each layer of the protocol stack performs corresponding processing on the first data.
  • the first data passes through the SDAP layer, the PDCP layer, the RLC layer, and the MAC layer in sequence, and corresponding headers are added to one or more layers of them to form the first data packet. Therefore, the first data packet includes the first packet header, and the first packet header includes the first sequence number SN1.
  • the first packet header may refer to the PDCP packet header, and the first sequence number SN1 may refer to the PDCP SN number. Or it can also be the sequence number of other layers, such as the RLC sequence number, the MAC sequence number, or the SDAP sequence number.
  • each layer of the protocol stack performs corresponding processing on the second data.
  • the second data passes through the SDAP layer, the PDCP layer, the RLC layer and the MAC layer in sequence, and corresponding headers are added to one or more layers of the layers to form the second data packet. Therefore, the second data packet includes the second header, and the second header includes the second sequence number SN2.
  • the second packet header may refer to the PDCP packet header, and the second sequence number SN2 may refer to the PDCP SN number. Or it can also be the sequence number of other layers, such as the RLC sequence number, the MAC sequence number, or the SDAP sequence number.
  • the access network device After receiving the first data packet and the second data packet, the access network device will parse the first data packet and the second data packet respectively.
  • the access network device may remove the MAC header, the RLC header, the PDCP header, and the SDAP header from the first data packet and the second data packet.
  • the SDAP layer and the RLC layer have a transmission mode that does not add packet headers.
  • the first data and the second data are obtained by removing the headers of the first data packet and the second data packet, respectively.
  • the order of step 403 and step 404 can be reversed.
  • the access network device performs network coding on the first data and the second data to form third data.
  • the network coding method may be exclusive OR (exclusive OR, xor), and the exclusive OR algorithm is: if the two values of a and b are different, the exclusive OR result is 1. If the values of a and b are the same, the XOR result is 0. XOR can also be called half addition operation.
  • the access network device may perform an exclusive OR operation on the first data and the second data to form the third data.
  • the encoding in the first embodiment of the present application may also include other operations, such as encoding by using other network encoding methods such as fountain codes.
  • an operation of adding a header to the third data may be performed.
  • the third data packet is sequentially added through the SDAP layer, the PDCP layer, the RLC layer and the MAC layer headers to form a third data packet, wherein the headers of the SDAP layer and the RLC layer are optional.
  • Any one or more of the SDAP layer, the PDCP layer, the RLC layer or the MAC layer header may be referred to as a header of the third data packet.
  • the header of the third data packet may include the first sequence number SN1 and the second sequence number SN2.
  • the first sequence number SN1 and the second sequence number SN2 may be in the PDCP header of the third data packet. It can be understood that the first sequence number SN1 and the second sequence number SN2 are the SN numbers of the first data packet and the second data packet, and the first sequence number SN1 and the second sequence number SN2 are used to identify the first data packet and the second data packet. Bag.
  • the first terminal device when the first terminal device receives the third data packet, according to the first sequence number SN1 in the third data packet header It can be determined that the uplink data associated with the third data is the first data. Thus, the first terminal device encodes the first data and the third data to obtain the second data. Likewise, when the second terminal device receives the third data packet, it can determine that the uplink data associated with the third data is the second data according to the second sequence number SN2 in the header of the third data packet. Thus, the second terminal device encodes the second data and the third data to obtain the first data.
  • the third data packet includes the first integrity protection domain of the first terminal device and the second integrity protection domain of the second terminal device.
  • the first integrity protection domain is a bit sequence generated by the access network device according to the key of the first terminal device and the content of the third data packet, and the first terminal device is based on the first integrity protection domain and the key of the first terminal device. Verify that the third packet has not been modified.
  • the second integrity protection domain is a bit sequence generated by the access network device according to the key of the second terminal device and the content of the third data packet, and the second terminal device is based on the second integrity protection domain and the second terminal device. The key verifies whether the third packet has been modified.
  • the access network device sends a third data packet to the first terminal device and/or the second terminal device.
  • the access network device sends the third data packet to the first terminal device and/or the second terminal device through the common transmission channel.
  • the first terminal device and/or the second terminal device obtain the integrity protection domain and the serial number from the third data packet.
  • This step is described below by taking the first terminal device as an example, and the actions performed by the second terminal device are the same as those of the first terminal device.
  • the first terminal device receives a third data packet sent by the access network device, where the third data packet includes a first control field and a second control field, and the first control field includes a first integrity protection field and/or a first sequence number, The second control field includes a second integrity protection field and/or a second sequence number.
  • the first integrity protection domain is generated according to the key of the first terminal device and the third data
  • the first serial number SN1 is the first data packet sent by the first terminal device to the access network device serial number in .
  • the first terminal device receives the third data packet, firstly identifies the first control field and the second control field in the third data packet, and finds out which one of the first control field and the second control field is the first terminal device After finding the corresponding control field, the first terminal device obtains the integrity protection domain and the serial number. and verifying whether the third data is modified according to the integrity protection field, finding the first data according to the serial number, and decoding the third data according to the first data to obtain the second data.
  • the process of identifying the control field by the first terminal device can be understood as: the first terminal device determines the third control field, and the third control field is the first control field or the second control field.
  • the third control field is not a new control field generated by the first terminal device, and determining the third control field refers to the process of finding the control field corresponding to the first terminal device in the first control field and the second control field.
  • the third control field is the first control field
  • the third control field is the second control field.
  • the first terminal device when receiving the third data packet, it needs to identify the first control field and the second control field in the third data packet, and obtain the third control field.
  • the first terminal device receives indication information, and the indication information is used to indicate the third control field to the first terminal device, that is, the indication information is used to indicate to the first terminal device that the first control field is in the first control field. and which of the second control fields belongs to the first terminal device. Therefore, the first terminal device can determine the third control field according to the indication information.
  • the indication information is also used to indicate to the second terminal device which control field in the first control field and the second control field belongs to the second terminal device.
  • the indication information is used to indicate the control field corresponding to the terminal device.
  • the access network device may send the indication information to the first terminal device and/or the second terminal device through the common transmission channel parameter.
  • the indication information may be serial numbers of the first terminal device and the second terminal device. Since the first control field and the second control field are put into the third data packet in a certain order, for example, the first control field is put into the third data packet before the second control field. Based on the sequence of the first control field and the second control field, the access network device may number the first terminal device as No. 1 and the second terminal device as No. 2 through the indication information.
  • the first terminal device obtains its own serial number as No. 1 according to the instruction information, and the first terminal device will be able to know that the meaning of No. 1 is that the control field first stored in the third data packet is the control field of the first terminal device.
  • the second terminal device obtains its own serial number as No. 2 according to the instruction information, and the second terminal device will be able to know that the meaning of No. 2 is that the control field stored in the third data packet is the control field of the second terminal device.
  • the first terminal device determines a third control field, where the third control field includes a third integrity protection field and/or a third sequence number.
  • the third integrity protection domain is the first integrity protection domain or the second integrity protection domain
  • the third serial number is the first serial number or the second serial number.
  • the third integrity protection domain and the third serial number are identified in pairs, that is, if the first terminal device identifies the first integrity protection domain and the second integrity protection domain, the first integrity protection domain is The integrity protection domain (third integrity protection domain) of the first terminal device, then the first serial number is the serial number (third serial number) of the first terminal device.
  • the first terminal device verifies the validity of the integrity protection of the third data according to its own key and the third integrity protection domain. Integrity protection effectively indicates that the third data is intact and not modified.
  • the first terminal device can determine the first data according to the third serial number.
  • the third sequence number is the first sequence number SN1 included in the header of the first data packet when the first terminal device sends the first data packet to the access network device. That is, the first header of the first data packet includes the third sequence number.
  • the third sequence number is used to identify the first data sent by the first terminal device. Therefore, when the first terminal device recognizes the third sequence number from the third data packet, the first terminal device can determine the access according to the third sequence number.
  • the first data sent by the network device is the first sequence number SN1 included in the header of the first data packet when the first terminal device sends the first data packet to the access network device. That is, the first header of the first data packet includes the third sequence number.
  • the third sequence number is used to identify the first data sent by the first terminal device. Therefore, when the first terminal device recognizes the third sequence number from the third data packet, the first terminal device can determine the access according to the third sequence number.
  • the first data sent by the network device is the
  • the first terminal device decodes the third data according to the first data to generate the second data, and/or the second terminal device decodes the third data according to the second data to generate the first data.
  • the first terminal device may XOR the first data and the third data to generate the second data
  • the second terminal device may XOR the second data and the third data Generate first data.
  • the first terminal device sends the first data to the second terminal device
  • the second terminal device sends the second data to the first terminal device
  • the first terminal device and the second terminal device communicate with each other.
  • the destination address of the first data packet of the first terminal device is the second terminal device
  • the destination address of the second data packet of the second terminal device is the first terminal device.
  • the network device receives the first data packet and the second data packet, encodes the first data and the second data to generate third data, and sends the third data through a common transmission channel. After receiving the third data, the first terminal device decodes the third data according to the first data to obtain the second data, and after receiving the third data, the second terminal device decodes the third data according to the second data to obtain the first data, so as to realize the first data. Intercommunication between a terminal device and a second terminal device.
  • a network device can use one downlink resource on a common transmission channel to implement mutual communication between two terminal devices, thereby reducing downlink resource overhead.
  • the difference between the second embodiment of the present application and the first embodiment is that after receiving the first data packet and the second data packet, the access network device sends the first data packet and the second data packet to the core network device, The core network device further sends a fourth data packet and a fifth data packet to the access network device, where the fourth data packet includes the first data sent by the access network device to the core network device, and the fifth data packet includes the The second data sent by the access network device to the core network device.
  • the access network device encodes the first data in the fourth data packet and the second data in the fifth data packet to form third data.
  • the access network device will first send the first data and the second data to the core network device, and the core network device will then send the first data and the second data to the core network device. It is returned to the access network device, and the access network device encodes the first data and the second data.
  • the core network equipment in this embodiment of the present application may be a 5G core network, and the core network equipment includes but is not limited to: AMF, User plane Function (UPF), Authentication Server Function (AUSF), data Network (Data Network, DN), Unstructured Data Storage Function (UDFS), Network Exposure Function (NEF), Network Element Data Repository Function (NF Repository Function, NRF), Network Slice Selection Function (NSSF), Policy Control Function (PCF), Session Management Function (SMF), Unified Data Management (UDM), Unified Data Warehouse (Unified Data Repository, UDR) or application layer function (Application Function, AF).
  • AMF User plane Function
  • AUSF Authentication Server Function
  • Data Network Data Network
  • UDFS Unstructured Data Storage Function
  • NEF Network Exposure Function
  • NRF Network Element Data Repository Function
  • NRF Network Slice Selection Function
  • PCF Policy Control Function
  • Session Management Function SMF
  • Unified Data Management UDM
  • UDR Unified Data Warehouse
  • Application Function Application Function
  • FIG. 5 is a flowchart of a communication method provided by the second embodiment of the present application. As shown in FIG. 5 , steps 501 to 508 are the same as those in the first embodiment. The different parts of an embodiment are described.
  • the access network device removes the header of the received first data packet and the second data packet to obtain the first data and the second data. Different from the first embodiment, the access network device obtains the first data and the second data. Steps 509 and 510 are performed after the first data and the second data.
  • the access network device sends the first data and the second data to the core network device.
  • the access network device after the access network device obtains the first data and the second data, it does not encode the first data and the second data, but parses the first data obtained from the first data packet and the second data from the first data packet.
  • the second data obtained by parsing in the second data packet is sent to the core network device.
  • the access network device receives the fourth data packet and the fifth data packet sent by the core network device.
  • the core network device since the data packet from the second terminal device is sent to the first terminal device, when the core network device sends the data packet from the second terminal device to the access network device, it will data channel transmission.
  • the access network device receives the data transmitted from the data channel of the first terminal device, it further sends the data to the first terminal device. Therefore, in the second embodiment of the present application, the fifth data packet is from the second terminal device, and the core network device will send the fifth data packet from the data channel of the first terminal device to the access network device, and the second terminal device will send the fifth data packet from the data channel of the first terminal device to the access network device.
  • the data channel of the device sends the fourth data packet to the access network device.
  • the fourth data packet includes the first data
  • the fifth data packet includes the second data.
  • the core network device encodes the first data in the fourth data packet and the second data in the fifth data packet to form third data.
  • the data channel between the core network device and the access network device may be a wired data channel.
  • the first data and the second data sent by the access network device to the core network device have removed the packet header of the first data packet and the packet header of the second data packet.
  • the access network device needs to identify that the data in the fourth data packet is the first data.
  • the access network device needs to identify that the data in the fifth data packet is the second data.
  • the access network device can determine in two ways that the data in the fourth data packet is the same as the data in the first data packet, and the data in the fifth data packet is the same as the data in the second data packet.
  • Manner 1 Compare the fourth data packet with the data packet received from the first terminal device, and compare the fifth data packet with the data packet received from the second terminal device.
  • the core network device sends the fifth data packet from the data channel of the first terminal device to the access network device, and sends the fourth data packet from the data channel of the second terminal device to the access network device. Therefore, when the access network device receives the fourth data packet, it can learn that the data in the fourth data packet is from the first terminal device. In order to determine which data packet in the fourth data packet is the same as which data packet from the first terminal device, the data in the fourth data packet received from the core network device and the data packet received from the first terminal device are analyzed. data for comparison. Through the comparison, it can be determined that the data in the fourth data packet is the same as the data in the first data packet.
  • the access network device After the comparison is the same, the first data from the first terminal device stored by the access network device can be deleted, and the comparison samples of other data packets subsequently received from the core network device can be reduced. Likewise, the access network device compares the data in the fifth data packet received from the core network device with the data in the data packet received from the second terminal device. Through the comparison, it can be determined that the data in the fifth data packet is the same as the data in the second data packet.
  • the fourth data packet includes the first sequence number in the first data packet, and it is determined according to the first sequence number that the data in the fourth data packet is the same as the data in the first data packet, and the fifth data packet includes the second data The second sequence number in the packet, according to the second sequence number, it is determined that the data in the fifth data packet is the same as the data in the second data packet.
  • the access network device when the access network device sends the first data to the core network device, it will also send the first sequence number SN1 in the first data packet to the core network device, and the core network device receives the first data and the first sequence number SN1.
  • the first sequence number SN1 of a data association When sending the first data to the access network device through the fourth data packet, the core network device will also send the first sequence number SN1 to the access network device through the fourth data packet.
  • the access network device may determine, according to the first sequence number SN1, that the data in the fourth data packet is the same as the data in the first data packet.
  • the access network device when it sends the second data to the core network device, it will also send the second sequence number SN2 in the second data packet to the core network device, and the core network device receives the second data and the second data The associated second sequence number SN2.
  • the core network device When sending the second data to the access network device through the fifth data packet, the core network device will also send the second sequence number SN2 to the access network device through the fifth data packet.
  • the access network device may determine, according to the second sequence number SN2, that the data in the fifth data packet is the same as the data in the second data packet.
  • the access network device further encodes the first data in the fourth data packet and the second data in the fifth data packet to generate third data, and can add a packet header to form a third data packet, which is sent to the first terminal device and/or the third data packet.
  • Two terminal equipment. This part of the content is the same as 405, and will not be repeated here.
  • the access network device after receiving the first data and the second data, the access network device further sends the first data and the second data to the core network device, and the core network device then sends it to the access network device , the communication security between the first terminal device and the second terminal device can be enhanced. For example, if a data monitoring function is deployed on the core network device, the monitoring function can analyze and monitor the data packets received by the core network device.
  • the communication method in the embodiments of the present application is described above, and the communication device in each embodiment of the present application will be described below.
  • the apparatus may adopt the methods shown in the embodiments of the present application. Since the principle of solving the problem by the method and the device is similar, the implementation of the device and the method can be referred to each other, and repeated descriptions will not be repeated here.
  • An embodiment of the present application provides a communication apparatus, and the communication apparatus may be a network device or a circuit.
  • the communication apparatus may be configured to perform the actions performed by the network device in the methods of the embodiments of the present application.
  • the communication apparatus includes: a transceiver module for receiving a first data packet from a first terminal device and a second data packet from a second terminal device, where the first data packet includes first data, and the second data packet includes second data.
  • each layer of the protocol stack performs corresponding processing on the first data. For example, the first data passes through the SDAP layer, the PDCP layer, the RLC layer and the MAC layer in sequence, and corresponding packet headers are added to each layer respectively.
  • the SDAP layer and the RLC layer have a transmission mode that does not add packet headers.
  • the processing module is used for encoding the first data and the second data to generate the third data.
  • a transceiver module configured to send third data to the first terminal device and/or the second terminal device.
  • the encoding manner may include an exclusive OR operation, that is, performing an exclusive OR on the first data and the second data to generate the third data.
  • the network device encodes the first data sent by the first terminal device and the second data sent by the second terminal device to form third data
  • the encoded third data is sent to the first terminal device and/or the second terminal device, so as to realize mutual communication between the first terminal device and the second terminal device and save downlink resources.
  • the communication apparatus provided by the embodiments of the present application can also be used to execute the method in any possible implementation manner of the method embodiments of the present application. For details, refer to the part of the content about the actions performed by the network device in the method embodiments. It will not be repeated here.
  • An embodiment of the present application provides a communication apparatus, and the communication apparatus may be a terminal device or a circuit.
  • the communication apparatus may be used to perform the actions performed by the terminal device in the method of the embodiment of the present application.
  • the communication device includes: a transceiver module for sending a first data packet, where the first data packet includes first data.
  • the transceiver module is configured to receive a third data packet from the network device, where the third data packet includes third data.
  • the processing module is used for decoding the third data according to the first data to generate the second data.
  • the decoding used by the processing module to decode the third data according to the first data may be: the processing module is used to perform an exclusive OR operation on the first data and the third data to generate the second data.
  • the network device encodes the first data sent by the first terminal device and the second data sent by the second terminal device to form third data , and send the encoded third data to the first terminal device and/or the second terminal device.
  • the first terminal device may decode the third data according to the first data, thereby acquiring the second data. Thereby, mutual communication between the first terminal device and the second terminal device is realized, and downlink resources are saved.
  • the communication apparatus provided in this embodiment can also be used to execute the method in any possible implementation manner of the method in the first embodiment.
  • the network device may be as shown in FIG. 6 , and the device 600 includes one or more radio frequency units, such as a remote radio unit (remote radio unit, RRU) 610 and one or more radio frequency units
  • Each baseband unit 620 (baseband unit, BBU) may also be referred to as a digital unit (digital unit, DU).
  • the RRU 610 may be referred to as a transceiver module.
  • the transceiver module may also be referred to as a transceiver, a transceiver circuit, or a transceiver, etc., which may include at least one antenna 611 and a radio frequency unit 612 .
  • the part of the RRU 610 is mainly used for transmitting and receiving radio frequency signals and converting radio frequency signals and baseband signals, for example, for sending indication information to terminal equipment.
  • the part of the BBU 610 is mainly used to perform baseband processing, control the base station, and the like.
  • the RRU 610 and the BBU 620 may be physically set together, or may be physically separated, that is, a distributed base station.
  • the BBU 620 is the control center of the base station, and can also be called a processing module, which can correspond to the processing module, and is mainly used to complete baseband processing functions, such as channel coding, multiplexing, modulation, spread spectrum, and the like.
  • the BBU processing module
  • the BBU may be used to control the base station to perform the operation procedure of the network device in the foregoing method embodiments, for example, to generate the foregoing indication information and the like.
  • the BBU 620 may be composed of one or more single boards, and the multiple single boards may jointly support a wireless access network of a single access standard, or may respectively support a wireless access network of different access standards (such as LTE network, 5G network or other network).
  • the BBU 620 also includes a memory 621 and a processor 622.
  • the memory 621 is used to store necessary instructions and data.
  • the processor 622 is configured to control the base station to perform necessary actions, for example, to control the base station to perform the operation procedure of the network device in the foregoing method embodiments.
  • the memory 621 and processor 622 may serve one or more single boards. That is to say, the memory and processor can be provided separately on each single board. It can also be that multiple boards share the same memory and processor. In addition, necessary circuits may also be provided on each single board.
  • FIG. 7 shows a schematic structural diagram of a simplified communication apparatus, which is convenient for understanding and illustration.
  • the communication apparatus takes a terminal device as an example.
  • the communication device includes a processor, a memory, a radio frequency circuit, an antenna, and an input and output device.
  • the processor is mainly used to process communication protocols and communication data, control terminal equipment, execute software programs, and process data of software programs.
  • the memory is mainly used to store software programs and data.
  • the radio frequency circuit is mainly used for the conversion of the baseband signal and the radio frequency signal and the processing of the radio frequency signal.
  • Antennas are mainly used to send and receive radio frequency signals in the form of electromagnetic waves.
  • Input and output devices such as touch screens, display screens, and keyboards, are mainly used to receive data input by users and output data to users. It should be noted that some types of terminal equipment may not have input and output devices.
  • the processor When data needs to be sent, the processor performs baseband processing on the data to be sent, and outputs the baseband signal to the radio frequency circuit.
  • the radio frequency circuit performs radio frequency processing on the baseband signal and sends the radio frequency signal through the antenna in the form of electromagnetic waves.
  • the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, which converts the baseband signal into data and processes the data.
  • FIG. 7 only one memory and processor are shown in FIG. 7 . In an actual end device product, there may be one or more processors and one or more memories.
  • the memory may also be referred to as a storage medium or a storage device or the like.
  • the memory may be set independently of the processor, or may be integrated with the processor, which is not limited in this embodiment of the present application.
  • the antenna and the radio frequency circuit with a transceiver function can be regarded as a transceiver module of the communication device, and the processor with a processing function can be regarded as a processing module of the communication device.
  • the communication device includes a transceiver module 701 and a processing module 702.
  • the transceiver module may be a transceiver, a transceiver, a transceiver device, and the like.
  • the processing module may also be a processor, a processing board, a processing device, and the like.
  • the device for implementing the receiving function in the transceiver module 701 may be regarded as a receiving module, and the device for implementing the transmitting function in the transceiver module 701 may be regarded as a transmitting module, that is, the transceiver module 801 includes a receiving module and a transmitting module.
  • the transceiver module may also sometimes be a transceiver, a transceiver, or a transceiver circuit or the like.
  • the receiving module may also sometimes be a receiver, a receiver, or a receiving circuit or the like.
  • the transmitting module may also be a transmitter, a transmitter or a transmitting circuit sometimes.
  • transceiver module 701 is configured to perform the sending and receiving operations on the terminal device side in the above method embodiments
  • processing module 702 is configured to perform other operations on the terminal device in the above method embodiments except for the transceiver operations.
  • the chip device may include a transceiver module and a processing module.
  • the transceiver module may be an input/output circuit and/or a communication interface;
  • the processing module is a processor, a microprocessor or an integrated circuit integrated on the chip.
  • the device When the communication device in this embodiment is a terminal device, reference may be made to the device shown in FIG. 8 .
  • the device includes a processor 801 , a transmit data processor 802 , and a receive data processor 803 .
  • the processing module in the above-mentioned embodiment may be the processor 801 in FIG. 8 and perform corresponding functions.
  • the transceiver module in the above embodiment may be the sending data processor 802 and/or the receiving data processor 803 in FIG. 9 .
  • a channel encoder and a channel decoder are shown in FIG. 8 , it should be understood that these modules do not constitute a limiting description of this embodiment, but are only illustrative.
  • FIG. 9 shows another form of this embodiment.
  • the processing device 900 includes modules such as a modulation subsystem, a central processing subsystem, and a peripheral subsystem.
  • the communication apparatus in this embodiment may serve as a modulation subsystem therein.
  • the modulation subsystem may include a processor 903 and an interface 904 .
  • the processor 903 completes the function of the above-mentioned processing module, and the interface 904 implements the function of the above-mentioned transceiver module.
  • the modulation subsystem includes a memory 906, a processor 903, and a program stored in the memory 906 and executable on the processor. When the processor 903 executes the program, the terminal device side in the foregoing method embodiment is implemented. Methods.
  • the memory 906 may be non-volatile or volatile, and its location may be inside the modulation subsystem or in the processing device 900, as long as the memory 906 can be connected to the The processor 903 is sufficient.

Landscapes

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

Abstract

L'invention concerne un procédé de communication et un appareil de communication, qui sont appliqués au domaine technique des communications sans fil. Le procédé consiste à : recevoir un premier paquet de données d'un premier dispositif terminal et un second paquet de données d'un second dispositif terminal, le premier paquet de données comprenant des premières données, et le second paquet de données comprenant des deuxièmes données ; envoyer des troisièmes données au premier dispositif terminal et/ou au second dispositif terminal, un schéma de codage pouvant comprendre une opération OU exclusif, c'est-à-dire qu'une opération OU exclusif est effectuée sur les premières données et les deuxièmes données afin de générer les troisièmes données ; et lorsque le premier dispositif terminal et le second dispositif terminal communiquent l'un avec l'autre, un dispositif réseau code les premières données envoyées par le premier dispositif de terminal et les deuxièmes données envoyées par le second dispositif terminal pour former les troisièmes données, puis envoie les troisièmes données, qui sont formées au moyen d'un codage, au premier dispositif terminal et/ou au second dispositif terminal de manière à réaliser une communication mutuelle entre le premier dispositif terminal et le second dispositif terminal, ce qui permet d'économiser une ressource de liaison descendante.
PCT/CN2020/119702 2020-09-30 2020-09-30 Procédé de communication et appareil de communication WO2022067785A1 (fr)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090323580A1 (en) * 2008-06-27 2009-12-31 Feng Xue Frame structure and sequencing for enabling network coding for wireless relaying
CN101836369A (zh) * 2007-08-27 2010-09-15 北方电讯网络有限公司 使用基于mimo的网络编码的通信系统
CN101843008A (zh) * 2007-11-02 2010-09-22 富士通株式会社 网络编码方法和网络编码装置
WO2011006442A1 (fr) * 2009-07-16 2011-01-20 Huawei Technologies Co., Ltd. Procédé de relais bidirectionnel dans un système de communication sans fil
CN107615845A (zh) * 2015-06-30 2018-01-19 华为技术有限公司 传输上行数据的方法和装置
US20180054716A1 (en) * 2016-08-16 2018-02-22 Research & Business Foundation Sungkyunkwan University Method and apparatus for index-coded multicast transmission in a wireless communication system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101836369A (zh) * 2007-08-27 2010-09-15 北方电讯网络有限公司 使用基于mimo的网络编码的通信系统
CN101843008A (zh) * 2007-11-02 2010-09-22 富士通株式会社 网络编码方法和网络编码装置
US20090323580A1 (en) * 2008-06-27 2009-12-31 Feng Xue Frame structure and sequencing for enabling network coding for wireless relaying
WO2011006442A1 (fr) * 2009-07-16 2011-01-20 Huawei Technologies Co., Ltd. Procédé de relais bidirectionnel dans un système de communication sans fil
CN107615845A (zh) * 2015-06-30 2018-01-19 华为技术有限公司 传输上行数据的方法和装置
US20180054716A1 (en) * 2016-08-16 2018-02-22 Research & Business Foundation Sungkyunkwan University Method and apparatus for index-coded multicast transmission in a wireless communication system

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