WO2017147754A1 - Procédé et dispositif de compression de paquets de données - Google Patents

Procédé et dispositif de compression de paquets de données Download PDF

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Publication number
WO2017147754A1
WO2017147754A1 PCT/CN2016/074849 CN2016074849W WO2017147754A1 WO 2017147754 A1 WO2017147754 A1 WO 2017147754A1 CN 2016074849 W CN2016074849 W CN 2016074849W WO 2017147754 A1 WO2017147754 A1 WO 2017147754A1
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WIPO (PCT)
Prior art keywords
data packet
compression
network side
side device
indication information
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PCT/CN2016/074849
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English (en)
Chinese (zh)
Inventor
庞伶俐
刘会平
郑潇潇
黄敏
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华为技术有限公司
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Priority to PCT/CN2016/074849 priority Critical patent/WO2017147754A1/fr
Publication of WO2017147754A1 publication Critical patent/WO2017147754A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information

Definitions

  • Embodiments of the present invention relate to data compression technologies, and in particular, to a data packet compression method and apparatus.
  • IP Internet Protocol
  • the packet header of some services such as voice and game is relatively long.
  • the data packet is usually compressed.
  • Table 1 shows the format of a data packet of a voice service.
  • the header of the data packet includes an Internet Protocol Version 4 (IPv4) header and a user datagram.
  • IPv4 Internet Protocol Version 4
  • UDP User Datagram Protocol
  • RTP Real-time Transport Protocol
  • the packet header length is 1.25 times the payload length. To reduce the air interface load, you can The packet is compressed.
  • the compression methods in the existing mobile communication networks are both bidirectional, that is, the uplink and downlink data packets are not compressed, or both the uplink and downlink data packets are compressed.
  • TCP Transmission Control Protocol
  • 90% of the uplink data packets are TCP acknowledgement (ACK) packets, and the ratio of the packet header length to the payload length of the TCP ACK packet. It is relatively large, and the number of TCP ACK packets is large.
  • the upstream and downstream data packets of the TCP service can be compressed.
  • the ratio of the header length to the payload length of some data packets of some services is relatively small. Compressing these short packet headers does not help to save air interface resources, but increases the load on the processor.
  • the embodiment of the invention provides a data packet compression method and device, which not only saves air interface resources, but also improves network capacity, and can also reduce the load of the processor of the UE and the network side device, and prolong the service life of the processor.
  • an embodiment of the present invention provides a data packet compression method, including: a user equipment UE receives a first message sent by a network side device, where the first message includes compression indication information, and the compression indication information is used. Instructing to perform one-side compression on the data packet, where the one-side compression is to compress only uplink data packets sent by the UE to the network side device, or only downlink data packets received by the UE from the network side device. Performing compression; the UE processes the data packet according to the compression indication information.
  • the compression indication information is used to indicate one-side compression of the data packet, and the one-side compression is to compress only the uplink data packet sent by the UE to the network side device, or only the downlink data packet received by the UE from the network side device. It is equivalent to compressing only the data packets that need to be compressed, and avoids unnecessary compression or decompression processing by the UE and the network side device.
  • the one-side compression method not only the air interface resources are saved, the network capacity is increased, and the network capacity can be reduced.
  • the load on the processor of the UE and the network side device extends the service life of the processor.
  • the first message further includes a service identifier information or a data packet type, where the service identifier information is used to indicate that the service data packet corresponding to the service identifier is performed.
  • the data packet type is used to indicate one-side compression of the data packet corresponding to the data packet type.
  • one-side compression of the corresponding service or data packet may be performed according to the service identification information or the data packet type, which may save air interface resources and improve network capacity.
  • the UE processes the data packet according to the compression indication information, including: determining, by the UE The type of the data packet; if the type of the data packet is an uplink transmission control protocol acknowledgement TCP ACK data packet, the UE compresses the uplink TCP ACK data packet. In this embodiment, only the uplink TCP ACK packet is compressed for the UE, which saves air interface resources and reduces the processor load of the UE.
  • the compressing the uplink TCP ACK data packet includes: acquiring, by the UE, the uplink TCP ACK data a change characteristic parameter in the packet to generate a compressed data packet; the change characteristic The parameter is a parameter that the data packet changes during the transmission; the UE sends the compressed data packet to the network side device, so that the network side device reconstructs the uplink TCP ACK according to the change feature parameter. data pack.
  • the UE only needs to change the partially changed information to the network side device for the uplink TCP ACK data packet, and the network side device reconstructs the complete uplink TCP ACK packet according to the changed information, thereby effectively reducing the uplink data transmission amount and reducing the air interface burden. Improve the uplink network capacity.
  • the change characteristic parameter includes a sequence number SN and an acknowledgement sequence number ACK SN.
  • the change feature parameter The link connection identifier is further used to identify a different link connection between the UE and the network side device to ensure the accuracy of reconstructing the uplink TCP ACK packet.
  • the method before the UE receives the first message sent by the network side device, the method further includes: the UE sending a capability report message to the network side device, where the capability report message is used to indicate that the UE supports one-side compression of the data packet.
  • the first message further includes a compression manner indicated by the network side device
  • processing, by the UE, the data packet according to the compression indication information including: the UE processing the data packet by using the indicated compression manner according to the compression indication information, to ensure that the network side device and the UE adopt the same
  • the compression method ensures the accuracy of data transmission.
  • an embodiment of the present invention provides a data packet compression method, including:
  • the network side device sends a first message to the user equipment UE, where the first message includes compression indication information, where the compression indication information is used to indicate one-side compression of the data packet, and the one-side compression is only for the UE.
  • the uplink data packet sent to the network side device is compressed or only the downlink data packet received by the UE from the network side device is compressed; and the network side device processes the data packet according to the compression indication information.
  • the compression indication information is used to indicate one-side compression of the data packet, and the one-side compression is to compress only the uplink data packet sent by the UE to the network side device, or only the downlink data packet received by the UE from the network side device.
  • the first message further includes a service identifier information or a data packet type, where the service identifier information is used to indicate that the service data packet corresponding to the service identifier is performed.
  • the data packet type is used to indicate one-side compression of the data packet corresponding to the data packet type.
  • one-side compression of the corresponding service or data packet may be performed according to the service identification information or the data packet type, which may save air interface resources and improve network capacity.
  • the network side device processes the data packet according to the compression indication information, including: Receiving, by the network side device, the compressed data packet sent by the UE, and parsing the compressed data packet, and acquiring a change feature parameter; the change feature parameter is a parameter that changes a data packet during a transmission process; The change characteristic parameter, the source port number, and the destination port number reconstruct an uplink acknowledgement ACK packet; the source port number and the destination port number are port numbers obtained when the connection is initialized; the network side device is to be reconstructed The uplink ACK packet is sent to the server.
  • the network UE only needs to change the partially changed information to the network side device for the uplink TCP ACK data packet, and the network side device reconstructs the complete uplink TCP ACK packet according to the changed information, thereby effectively reducing the uplink data transmission amount and reducing the air interface. Burden to increase the capacity of the uplink network.
  • the change characteristic parameter includes a sequence number SN and an acknowledgement sequence number ACK SN.
  • the change feature parameter further includes: before the network side device reconstructs the uplink acknowledgement ACK packet according to the change feature parameter, the source port number, and the destination port number, the method further includes: the network side device according to the The LID determines a source port number and a destination port number corresponding to the LID.
  • the link connection identifier is used to indicate different link connections between the UE and the network side device to ensure the accuracy of reconstructing the uplink TCP ACK packet.
  • the method further includes: when the network side device detects the When the UE switches from the source cell to the target cell, the handover request command that carries the change feature parameter is sent to the network side device corresponding to the target cell; or, when the network side device detects the When the UE is handed over from the source cell to the target cell, the cached data carrying the change feature parameter is forwarded to the network side device corresponding to the target cell, and in the handover scenario, the change feature information of the source network side device is carried in the handover request.
  • the command or forwarding data is sent to the target network side device, which not only maintains the continuity of the one-side compression, but also reduces the waste of bandwidth resources caused by separately transmitting the change feature information.
  • the method further includes: the network side device receiving the UE sending capability report message, where the capability report message is used to indicate that the UE supports one-side compression of a data packet.
  • the first message further includes a compression manner indicated by the network side device
  • the network side device processes the data packet according to the compression indication information, and the network side device processes the data packet by using the indicated compression manner according to the compression indication information to ensure the network side device.
  • the same compression method is adopted for the UE to ensure the accuracy of data transmission.
  • an embodiment of the present invention provides a data packet compression apparatus, including:
  • a receiving module configured to receive a first message sent by the network side device, where the first message includes compression indication information, where the compression indication information is used to indicate one-side compression of the data packet, and the one-side compression is only Uplink data packets sent by the user equipment UE to the network side device are compressed or only downlink data packets received by the UE from the network side device are compressed;
  • a processing module configured to process the data packet according to the compression indication information.
  • the first message further includes service identifier information or a data packet type, where the service identifier information is used to indicate that the service data packet corresponding to the service identifier is performed.
  • the data packet type is used to indicate one-side compression of the data packet corresponding to the data packet type.
  • the processing module includes:
  • a compression submodule configured to compress the uplink TCP ACK packet if the type of the data packet is an uplink transmission control protocol acknowledgement TCP ACK packet.
  • the compression sub-module is specifically configured to acquire a change characteristic parameter in the uplink TCP ACK packet to generate a compression Sending the compressed data packet to the network side device, so that the network side device reconstructs the uplink TCP ACK data packet according to the change characteristic parameter, where the change characteristic parameter is a data packet A parameter that changes during transmission.
  • the change characteristic parameter includes a sequence number SN and an acknowledgement sequence number ACK SN.
  • the change feature parameter It also includes a link connection identifier.
  • the device further includes:
  • a sending module configured to send a capability report message to the network side device, where the capability report message is used to indicate that the UE supports one-side compression of the data packet.
  • the first message further includes a compression manner indicated by the network side device
  • the processing module is configured to process the data packet by using the indicated compression manner according to the compression indication information.
  • the device provided in this embodiment is used to implement the technical solution of the method embodiment in any of the first embodiments.
  • the implementation principle and technical effects are similar, and details are not described herein again.
  • an embodiment of the present invention provides a data packet compression apparatus, including:
  • a sending module configured to send a first message to the user equipment UE, where the first message includes compression indication information, where the compression indication information is used to indicate one-side compression of the data packet, and the one-side compression is only
  • the uplink data packet sent by the UE to the network side device is compressed or only the downlink data packet received by the UE from the network side device is compressed;
  • a processing module configured to process the data packet according to the compression indication information.
  • the first message further includes a service identifier information or a data packet type, where the service identifier information is used to indicate that the service data packet corresponding to the service identifier is performed.
  • the data packet type is used to indicate one-side compression of the data packet corresponding to the data packet type.
  • the processing module is configured to receive the compressed data packet sent by the UE, and parse the Compressing the data packet to obtain a change characteristic parameter;
  • the change characteristic parameter is a parameter in which the data packet changes during the transmission; and reconstructing the uplink acknowledgement ACK data packet according to the change characteristic parameter, the source port number, and the destination port number;
  • the source port number and the destination port number are port numbers obtained when the connection is initialized, and the reconstructed uplink ACK data packet is sent to the server by using the sending module.
  • the change characteristic parameter includes a sequence number SN and an acknowledgement sequence number ACK SN.
  • the change feature parameter if there are multiple link connections between the UE and the network side device, the change feature parameter also includes a link connection identifier LID;
  • the processing module is further configured to determine, according to the LID, a source port number and a destination port number corresponding to the LID.
  • the sending module is further configured to: when detecting that the UE is switched from a source cell When the target cell is used, the handover request command that carries the change feature parameter is sent to the network side device corresponding to the target cell;
  • the sending module is further configured to: when the network side device detects that the UE is handed over from the source cell to the target cell, forward the cached data that carries the change feature parameter to the network side device corresponding to the target cell.
  • the device further includes:
  • the receiving module is configured to receive the sending capability report message of the UE, where the capability report message is used to indicate that the UE supports one-side compression of the data packet.
  • the first message further includes a compression manner indicated by the network side device
  • the processing module is specifically configured to adopt the compression of the indication according to the compression indication information. The way to process the packet.
  • the device provided in this embodiment is used to implement the technical solution of the method embodiment in any of the embodiments of the second aspect, and the implementation principle and the technical effect are similar, and details are not described herein again.
  • FIG. 1 is a schematic diagram of an application scenario of a method for compressing a data packet according to an embodiment of the present disclosure
  • FIG. 2 is a flowchart of a method for compressing a data packet according to Embodiment 1 of the present invention
  • FIG. 3 is a flowchart of a method for compressing a data packet according to Embodiment 2 of the present invention.
  • FIG. 5 is a schematic structural diagram of a data packet compression apparatus according to Embodiment 4 of the present invention.
  • FIG. 6 is a schematic structural diagram of a data packet compression apparatus according to Embodiment 5 of the present invention.
  • FIG. 7 is a schematic structural diagram of a data packet compression apparatus according to Embodiment 6 of the present invention.
  • FIG. 8 is a schematic structural diagram of a data packet compression apparatus according to Embodiment 7 of the present invention.
  • FIG. 9 is a schematic structural diagram of a data packet compression apparatus according to Embodiment 8 of the present invention.
  • FIG. 10 is a schematic structural diagram of a user equipment according to Embodiment 9 of the present invention.
  • FIG. 1 is a schematic diagram of an application scenario of a method for compressing a data packet according to an embodiment of the present invention.
  • the compression method of the data packet of the present invention is applied to a wireless communication system, and can be specifically applied to an Internet of Things, a Universal Terrestrial Radio Access Network (UTRAN), and an evolved universal terrestrial wireless access network ( In a wireless communication system such as Evolved Universal Terrestrial Radio Access Network (E-UTRAN).
  • the system architecture of the scenario includes User Equipment (UE) 1, UE2, UE3, network side device 4, and server 5.
  • the UE may refer to a user equipment in a wireless communication system, and may specifically be various types of terminals, sensors, machine type devices, and the like.
  • the network side device may be an access network device or a core network device, and the network side device may also include an access network device and a core network device, and the network side device may also be any relay device in the process of performing service data transmission, specifically,
  • the network side device may be a control node on the network side such as an Evolved Node B (eNB) or a core network node.
  • eNB Evolved Node B
  • FIG. 2 is a flowchart of a method for compressing a data packet according to Embodiment 1 of the present invention. The method is based on The scenario shown in Figure 1 is performed by the UE and the network side device. As shown in FIG. 2, the method includes the following steps:
  • Step 101 The UE receives the first message sent by the network side device, where the first message includes compression indication information, where the compression indication information is used to indicate one-side compression of the data packet, and the one-side compression is only sent to the network side device by the UE.
  • the uplink data packet is compressed or only the downlink data packet received by the UE from the network side device is compressed.
  • the network side device sends a first message to the UE, indicating that the uplink data packet sent by the UE to the network side device is compressed or only
  • the downlink data packet received by the UE from the network side device is compressed.
  • 90% of the uplink packets are TCP ACK packets, and the ratio of the header to the payload of the TCP ACK packet is large.
  • the uplink data packet is compressed, and the compression indication information in the first message is used to indicate that only the uplink data packet sent by the UE to the network side device is compressed.
  • the uplink data packet is a data packet sent by the UE to the network side device, and the downlink data packet is a data packet sent by the network side device to the UE.
  • the network side device sends the first message to the user equipment UE, where the first message includes the compression indication information, the compression indication information is used to indicate that the data packet is unilaterally compressed, and the one-side compression is only sent to the network side device for the UE.
  • the uplink data packet is compressed or only the downlink data packet received by the UE from the network side device is compressed.
  • the network side device may send the first message to the UE after the connection is established, or may send the first message to the UE under certain triggering conditions, for example, when the network side device performs the capability reporting on the UE, Sending a first message to the UE, or the network side device is updated or sends a first message or the like to the UE according to a preset time interval.
  • the first message may be a public message, such as a system broadcast message.
  • Step 102 The UE processes the data packet according to the compression indication information.
  • the UE responds to the data packet according to the compression indication information. For example, if the compression indication information indicates that only the uplink data packet sent by the UE to the network side device is compressed, the UE sends the information according to the compression indication information pair. The data packet of the network side device is compressed; if the compression indication information indicates that only the downlink data packet received by the UE from the network side device is compressed, the UE decompresses the received data packet.
  • the network side device processes the data packet according to the compression indication information.
  • the network side device decompresses the data packet sent by the UE; if the compression indication information indicates that only the UE is from the network The downlink data packet received by the side device is compressed, and the network side device compresses the data packet sent to the UE.
  • the UE receives the first message that is sent by the network side device and includes the compression indication information, and processes the data packet according to the compression indication information, where the compression indication information is used to indicate that the data packet is
  • the side is compressed, and the one-side compression is to compress only the uplink data packet sent by the UE to the network side device or only the downlink data packet received by the UE from the network side device, which is equivalent to compressing only the data packet that needs to be compressed.
  • the UE and the network side device are prevented from performing unnecessary compression or decompression processing.
  • FIG. 3 is a flowchart of a method for compressing a data packet according to Embodiment 2 of the present invention. As shown in FIG. 3, the method includes the following steps:
  • Step 201 The UE receives the first message sent by the network side device, where the first message includes the compression indication information, if the compression indication information is the uplink compression indication information, step 202 is performed, and if the compression indication information is the downlink compression indication information, the UE performs Step 203.
  • the uplink compression indication information is used to indicate that only the uplink data packet sent by the UE to the network side device is compressed, and the downlink compression indication information is used to indicate that only the downlink data packet received by the UE from the network side device is compressed.
  • the first message may further include a service identifier or a data packet type, where the service identifier information is used to indicate one-side compression of the service data packet corresponding to the service identifier, and the data packet type is used to indicate that the data packet type corresponds to The data packet is compressed on one side.
  • the service corresponding to the service identification information is a video service
  • the UE compresses the video service data packet
  • the data packet type is TCP ACK
  • the UE compresses the TCP ACK data packet.
  • the compression is performed by using the header compression as an example.
  • the network side device sets the IE:PDCP-Config field in the first message sent, and in the IE:PDCP-Config field. Added two fields of ULnotUsed and DLnotUsed in the headerCompression field: when there is a ULnotUsed field under headerCompression, it indicates that the UE does not need uplink packets.
  • Performing header compression means that only the downlink data packet received by the UE from the network side device is header-compressed, that is, the network side device performs header compression on the data packet sent to the UE, and the UE receives the received data from the network side device. The packet is decompressed.
  • the UE when the DLnotUsed field exists in the headerCompression, the UE indicates that the downlink data of the UE is not subjected to header compression, that is, only the uplink data packet sent by the UE to the network side device is header-compressed, and the UE performs header processing on the data packet sent to the network side device. Compressed and does not decompress downstream packets.
  • the compression of the uplink data packet or the compression of the downlink data packet is only an example.
  • the ULnotUsed and the DLnotUsed are also only one possible implementation manner, and other fields may be defined by those skilled in the art.
  • the name stipulates that the uplink data packet is compressed or the downlink data packet is compressed, which is not limited in the present invention.
  • Step 202 The UE compresses the uplink data packet sent by the UE to the network side device according to the uplink compression indication information.
  • the compression indication information is the uplink compression indication information
  • the uplink compression indication information is used to indicate that only the uplink data packet sent by the UE to the network side device is compressed; and the network side device uses the compression indication information to compare the data.
  • the packet is processed, and the network side device decompresses the uplink data packet sent by the UE to the network side device according to the uplink compression indication information.
  • Step 203 The UE decompresses the downlink data packet received by the UE from the network side device according to the downlink compression indication information.
  • the compression indication information is downlink compression indication information
  • the downlink compression indication information is used to indicate that only the downlink data packet received by the UE from the network side device is compressed; and the network side device uses the compression indication information to the data packet.
  • the processing includes: compressing, by the network side device, the downlink data packet sent by the network side device to the UE according to the downlink compression indication information.
  • the UE receives the first message that includes the compression indication information that is sent by the network side device, and if the compression indication information is the uplink compression indication information, the UE sends the UE to the network side device according to the uplink compression indication information.
  • the uplink data packet is compressed. If the compression indication information is the downlink compression indication information, the UE decompresses the downlink data packet received by the UE from the network side device according to the downlink compression indication information, and sets different compression indication information in the first message.
  • the method is simple, easy to implement, saves air interface resources, improves network capacity, and reduces the load on the processor of the UE and the network side device, thereby prolonging the service life of the processor.
  • FIG. 4 is an interaction flowchart of a method for compressing data packets according to Embodiment 3 of the present invention.
  • This implementation mainly provides a method for compressing an uplink data packet. As shown in FIG. 4, the method includes the following steps:
  • Step 301 the UE determines the type of the data packet.
  • the data packet may be classified into different types according to the service identifier, the service type, the role of the data packet, etc., for example, the data packet may be divided into a normal TCP data packet, a TCP ACK data packet, and the like.
  • step 301 includes the following steps:
  • Step 3011 The UE determines the type of the uplink data packet according to the ACK mark value and the data length in the uplink data packet.
  • the Packet Data Convergence Protocol (PDCP) layer or the Radio Link Control (RLC) layer of the UE is parsed when receiving the TCP packet sent by the upper layer TCP.
  • the header part of the TCP packet can obtain the ACK tag value and the data length.
  • Step 3012 If the ACK flag value is 1, and the data length is 0, it is confirmed that the data packet is an uplink TCP ACK data packet.
  • the UE performs the following determination: if the ACK flag value obtained by parsing the data packet header is 1 and the data length is greater than 0, the data packet is a normal TCP data packet, and no processing is performed on the data packet, and the normal delivery is performed. To the lower layer; if the ACK flag obtained by parsing the packet header is set to 1, and the data length is equal to 0, the packet is an uplink TCP ACK packet.
  • the foregoing determining manner is only a feasible determining manner.
  • the UE can also determine whether the SYN, or the timestamp or the option field is valid, and if not, the compression is not performed.
  • Step 302 if the type of the uplink data packet is an uplink TCP ACK data packet, the UE compresses the uplink TCP ACK data packet.
  • step 302 specifically includes the following steps:
  • Step 3021 The UE acquires a change feature parameter in the uplink TCP ACK packet to generate a compressed data packet.
  • the change characteristic parameter is a parameter that the data packet changes during the transmission process.
  • the change feature parameters include a serial number (SN) and an Acknowledgement Serial Number (ACK SN).
  • the change feature parameter further includes a Link Connection Identifier (LID).
  • LID is used to identify different link connections between the UE and the network side device to ensure the accuracy of reconstructing the uplink ACK data packet.
  • the link connection identifier may be a logical channel number, a TCP connection number, or the like, which is not limited herein.
  • the UE may further add compression indication information in a header of the compressed data packet, where the compression indication information is used to indicate that the data packet is a compressed data packet.
  • the network side device reconstructs the uplink TCP ACK data packet before compression according to the compression criterion, including the SN, the ACK SN, the source port number, and the destination port number.
  • the UE may also pre-arrange the uplink data packet as a compressed data packet with the network side device.
  • the network side device receives the compressed data packet including the SN and the ACK SN, the network side device defaults the data packet to the compressed data packet.
  • the data packet reconstructs the uplink ACK packet according to the SN, the ACK SN, the source port number, and the destination port number.
  • Step 3022 The UE sends the compressed data packet to the network side device, so that the network side device reconstructs the uplink ACK data packet according to the change feature parameter.
  • step 303-step 305 is a process in which the network side device decompresses the uplink data packet sent by the UE to the network side device according to the uplink compression indication information.
  • Step 303 The network side device receives the compressed data packet sent by the UE, and parses the compressed data packet to obtain a change feature parameter.
  • the change feature parameter is a parameter that changes the data packet during the transmission process. .
  • Step 304 The network side device reconstructs an uplink acknowledgement ACK packet according to the change feature parameter, the source port number, and the destination port number.
  • the source port number and the destination port number are port numbers obtained when the connection is initialized.
  • Step 305 The network side device sends the reconstructed uplink ACK data packet to the server.
  • the PDCP layer or the RLC layer of the network side device parses the data packet header to obtain the source port number and the destination port number, and reconstructs the uplink ACK. After the data packet, the reconstructed uplink ACK packet is sent to the server.
  • the change feature parameter further includes a link connection identifier LID; and the network side device reconstructs the uplink according to the change feature parameter, the source port number, and the destination port number.
  • the method further includes: the network side device according to the LID, Determine the source port number and destination port number corresponding to the LID.
  • the reserved field or the option field in the synchronous (SYN) data packet or the ACK data packet of the initial three-way handshake establishment TCP connection is added with an LID, and the LID is used to distinguish between the UE and the server (Server).
  • the PDCP or RLC layer parsing packet header of the network side device obtains the source port number, the destination port number, and the LID, and stores the correspondence between the source port number and the destination port number of each TCP connection and the LID.
  • the source port number and the destination port number corresponding to the LID of the data packet are determined according to the correspondence between the source port number and the destination port number and the LID, and then according to the SN.
  • the ACK SN, the source port number, and the destination port number reconstruct the uplink acknowledgement ACK packet.
  • the method may further include: when the network side device detects that the UE is handed over from the source cell to the target cell, sending a handover request command that carries the change feature parameter to the network side device corresponding to the target cell. Or, when the network side device detects that the UE is handed over from the source cell to the target cell, the cached data carrying the change feature parameter is forwarded to the network side device corresponding to the target cell.
  • the network side device may send information such as the SN and the ACK SN corresponding to the source cell in the handover request command (Handover Request).
  • the network side device of the target cell may be sent to the network side device of the target cell by using the information such as the SN and the ACK SN corresponding to the source cell in the forwarding data of the switching process.
  • the information of the SN and the ACK SN of the source network side device is sent to the target network side device, which not only maintains the continuity of the one-side compression, but also reduces the waste of bandwidth resources caused by separately transmitting the change feature information.
  • the UE determines the type of the data packet according to the acknowledgement ACK tag value and the data length of the data packet, and obtains the uplink TCP ACK data packet if the data packet type is an uplink TCP ACK data packet.
  • the characteristic parameter is changed to generate a compressed data packet, and the compressed data packet is sent to the network side device, and the network side device parses the compressed data packet, obtains the change characteristic parameter, and reconstructs according to the change characteristic parameter, the source port number, and the destination port number.
  • the uplink TCP ACK packet is sent to the server by the reconstructed uplink TCP ACK packet.
  • the UE only needs to change the partially changed information to the network side device for the uplink TCP ACK data packet, and the network side device reconstructs the complete uplink TCP ACK packet according to the changed information, thereby effectively reducing the uplink data transmission amount and reducing the air interface burden. Improve the uplink network capacity.
  • the method before the receiving the first message sent by the network side device, the method further includes: the UE sending a capability report message to the network side device, where the capability report message is used to indicate that the UE supports One-sided compression of the packet.
  • the method further includes: the network side device receiving the UE sending capability report message, and the capability reporting message is used to indicate that the UE supports one-side compression of the data packet.
  • the UE sends a capability report message to the network side device to notify the network side device that the UE supports one-side compression, and the network side device sends the first message to the UE according to the capability report message.
  • the first message further includes a compression mode indicated by the network side device, and the UE processes the data packet according to the compression indication information, and the UE processes the data packet by using the indicated compression manner according to the compression indication information.
  • the first message further includes a compression mode indicated by the network side device; the network side device processes the data packet according to the compression indication information, including: the network side device adopts the indicated compression according to the compression indication information. The way to process the packet.
  • the UE may further select a compression mode supported by the UE and the network side device according to the compression mode indicated by the network side device, and process the data packet by using the selected compression mode.
  • the network side device may also select a compression mode supported by the UE and the network side device according to the compression mode indicated by the network side device, and process the data packet by using the selected compression mode.
  • the UE and the network side device may include multiple compression modes.
  • the field related to the compression mode in the first message includes three different compression modes represented by three data: profile0x001, profile0x002, and profile0x006.
  • the compression mode supported by the UE is profile0x003, profile0x004, and profile0x006.
  • the UE and the network side device compress or decompress the data packet in the compression mode corresponding to profile0x006, so that the compression mode of the UE and the network side device are synchronized to ensure data transmission. Reliability.
  • the UE and the network side device negotiate a compression mode, and when the data packet is transmitted, the data packet is directly compressed by using a negotiated compression method.
  • the compression mode supported by the network side device may not be carried in a message, so that the length of the first message is reduced, and the air interface resource is further saved.
  • FIG. 5 is a schematic structural diagram of a data packet compression apparatus according to Embodiment 4 of the present invention.
  • the apparatus includes a receiving module 11 and a processing module 12.
  • the receiving module 11 is configured to receive a network side device
  • the first message to be sent, the first message includes compression indication information
  • the compression indication information is used to indicate one-side compression of the data packet
  • the one-side compression is to compress only the uplink data packet sent by the user equipment UE to the network side device.
  • the processing module 12 is configured to process the data packet according to the compression indication information.
  • the device in this embodiment may be used to implement the technical solution of the method embodiment shown in FIG. 2 or FIG. 3, and the implementation principle and technical effects are similar, and details are not described herein again.
  • FIG. 6 is a schematic structural diagram of a data packet compression apparatus according to Embodiment 5 of the present invention.
  • the processing module 12 includes a determination sub-module 121 and a compression sub-module 122.
  • the determining sub-module 121 is configured to determine the type of the data packet;
  • the compression sub-module 122 is configured to compress the uplink TCP ACK data packet if the type of the data packet is an uplink transmission control protocol acknowledgement TCP ACK data packet.
  • the first message further includes service identifier information or a data packet type, where the service identifier information is used to indicate one-side compression of the service data packet corresponding to the service identifier, and the data packet type is used to indicate the data packet corresponding to the data packet type. Compress.
  • the compression sub-module 122 is configured to acquire a change characteristic parameter in the uplink TCP ACK packet to generate a compressed data packet, and send the compressed data packet to the network side device, so that the network side device is heavy according to the change feature parameter.
  • the uplink TCP ACK packet is configured, and the change characteristic parameter is a parameter in which the data packet changes during transmission.
  • the variation feature parameter includes a sequence number SN and an acknowledgement sequence number ACK SN.
  • the change feature parameter further includes a link connection identifier.
  • the device of the embodiment may be used to implement the technical solution of the method embodiment shown in FIG. 4, and the implementation principle and the technical effect are similar, and details are not described herein again.
  • FIG. 7 is a schematic structural diagram of a data packet compression apparatus according to Embodiment 6 of the present invention. As shown in FIG. 7, the apparatus further includes a transmitting module 13.
  • the sending module 13 is configured to send a capability report message to the network side device, where the capability report message is used to indicate that the UE supports one-side compression of the data packet.
  • the first message further includes a compression mode indicated by the network side device.
  • the processing module 12 is specifically configured to process the data packet by using the indicated compression manner according to the compression indication information.
  • FIG. 8 is a schematic structural diagram of a data packet compression apparatus according to Embodiment 7 of the present invention.
  • the apparatus includes a transmitting module 21 and a processing module 22.
  • the sending module 21 is configured to send a first message to the user equipment UE, where the first message includes compression indication information, and the compression indication information is used to indicate the pair
  • the data packet is compressed on one side, and the one-side compression is to compress only the uplink data packet sent by the UE to the network side device or only the downlink data packet received by the UE from the network side device.
  • the processing module 22 is configured to use the compression indication information according to the compression indication information. Process the packet.
  • the device of the embodiment may be used to implement the technical solution of the method embodiment shown in FIG. 2 or FIG. 3, and the implementation principle and the technical effect are similar, and details are not described herein again.
  • the first message further includes service identifier information or a data packet type, where the service identifier information is used to indicate one-side compression of the service data packet corresponding to the service identifier, and the data packet type is used to indicate the data packet corresponding to the data packet type. Perform one-sided compression.
  • the processing module 22 is specifically configured to receive the compressed data packet sent by the UE, and parse the compressed data packet to obtain a change feature parameter;
  • the change feature parameter is a parameter that changes the data packet during the transmission process; according to the change feature parameter, the source The port number and the destination port number reconstruct the uplink acknowledgement ACK packet; the source port number and the destination port number are port numbers obtained when the connection is established; and the reconstructed uplink ACK packet is sent to the server by the sending module 21.
  • the variation feature parameter includes a sequence number SN and an acknowledgement sequence number ACK SN.
  • the change feature parameter further includes a link connection identifier LID.
  • the processing module 22 is further configured to determine, according to the LID, a source port number corresponding to the LID. Destination port number.
  • the sending module 21 is further configured to: when detecting that the UE is handed over from the source cell to the target cell, send a handover request command that carries the change feature parameter to the network side device corresponding to the target cell; or, the sending module 21 is further used to: When the network side device detects that the UE is handed over from the source cell to the target cell, the cached data carrying the change feature parameter is forwarded to the network side device corresponding to the target cell.
  • FIG. 9 is a schematic structural diagram of a data packet compression apparatus according to Embodiment 8 of the present invention. As shown in FIG. 9, the apparatus further includes a receiving module 23.
  • the receiving module 23 is configured to receive a UE sending capability report message, where the capability report message is used to indicate that the UE supports one-side compression of the data packet.
  • the first message further includes a compression mode indicated by the network side device.
  • the processing module 22 is specifically configured to process the data packet by using the indicated compression manner according to the compression indication information.
  • the device in this embodiment may be used to perform the technical solution of the method embodiment shown in any of FIG. 2 to FIG. 4, and the implementation principle and technical effects are similar, and details are not described herein again.
  • FIG. 10 is a schematic structural diagram of a user equipment according to Embodiment 9 of the present invention.
  • the user equipment includes a receiver 31 and a processor 32, and the user equipment may further include a transmitter 33.
  • the memory 34, the transmitter 33, and the receiver 31 are coupled to the processor 32, respectively.
  • Processor 32 may include one or more multi-core processors and/or memory 34.
  • Processor 32 can be a general purpose processor, an application specific integrated circuit (ASIC), or a digital signal processor (DSP).
  • Memory 34 can be a non-transitory storage medium coupled to processor 32 for storing different types of data.
  • the memory 34 may comprise a read only memory (ROM), a random access memory (RAM) or other type of dynamic storage device that can store information and instructions, or may be a disk storage. Memory 34 can be used to store instructions that implement the related methods described in Figures 2 - 4.
  • ROM read only memory
  • RAM random access memory
  • Memory 34 can be used to store instructions that implement the related methods described in Figures 2 - 4.
  • the receiver 31 is configured to receive a first message sent by the network side device, where the first message includes compression indication information, where the compression indication information is used to indicate one-side compression of the data packet, and the one-side compression is only
  • the uplink data packet sent by the user equipment to the network side device is compressed or only the downlink data packet received by the UE from the network side device is compressed;
  • the processor 32 is configured to perform data packet according to the compression indication information. deal with.
  • the first message further includes service identifier information or a data packet type, where the service identifier information is used to indicate that the service data packet corresponding to the service identifier is unilaterally compressed, and the data packet type is used to indicate the data pair.
  • the packet corresponding to the packet type is compressed.
  • the processor 32 is specifically configured to determine a type of the data packet; if the type of the data packet is an uplink transmission control protocol acknowledgement TCP ACK data packet, compressing the uplink TCP ACK data packet.
  • the processor 32 compresses the uplink TCP ACK packet, including: the processor 32 acquires a change feature parameter in the uplink TCP ACK packet to generate a compressed data packet; and the change feature parameter is data. Transmitting the compressed data packet to the network side device, so that the network side device reconstructs the uplink TCP ACK data packet according to the change characteristic parameter.
  • the change characteristic parameter includes a sequence number SN and an acknowledgement sequence number ACK SN.
  • the change feature parameter further includes a link connection identifier.
  • the transmitter 33 is configured to send a capability report message to the network side device, where the capability report message is used to indicate that the UE supports one-side compression of the data packet.
  • the first message further includes a compression manner indicated by the network side device; the processor The method is specifically configured to process the data packet by using the compressed manner of the indication according to the compression indication information.
  • the user equipment in this embodiment may be used to perform the technical solution of the method embodiment shown in any of FIG. 2 to FIG. 4, and the implementation principle and technical effects are similar, and details are not described herein again.
  • the embodiment of the present invention further provides a network side device, and the structure of the network side device is the same as that of the device shown in FIG. 10.
  • the transmitter is configured to send a first message to the user equipment UE, where
  • the first message includes compression indication information, where the compression indication information is used to indicate one-side compression of the data packet, and the one-side compression is to compress only the uplink data packet sent by the UE to the network side device, or only The downlink data packet received by the UE from the network side device is compressed;
  • the processor is configured to process the data packet according to the compression indication information.
  • the first message further includes service identifier information or a data packet type, where the service identifier information is used to indicate that the service data packet corresponding to the service identifier is unilaterally compressed, and the data packet type is used to indicate the data pair.
  • the packet corresponding to the packet type is unilaterally compressed.
  • the processor is specifically configured to receive, by using a receiver, a compressed data packet sent by the UE, where the processor parses the compressed data packet to obtain a change feature parameter; and the change feature parameter is that the data packet is transmitted. a parameter that changes during the process; and reconstructs an uplink acknowledgement ACK packet according to the change characteristic parameter, the source port number, and the destination port number; the source port number and the destination port number are port numbers obtained when the connection is initialized. Transmitting the reconstructed uplink ACK packet to the server through the transmitter.
  • the change characteristic parameter includes a sequence number SN and an acknowledgement sequence number ACK SN.
  • the change feature parameter further includes a link connection identifier LID; and the processor is further configured to determine, according to the LID, The source port number and the destination port number corresponding to the LID.
  • the transmitter is further configured to, when detecting that the UE is handed over from the source cell to the target cell, send a handover request command that carries the change feature parameter to the network side device corresponding to the target cell; or When the UE is detected to be handed over from the source cell to the target cell, the cached data carrying the change feature parameter is forwarded to the network side device corresponding to the target cell.
  • the receiver is configured to receive the UE sending capability report message, where the capability report message is used to indicate that the UE supports one-side compression of the data packet.
  • the first message further includes a compression manner indicated by the network side device; the processor Specifically, the data packet is processed according to the compression indication information according to the compression indication manner.
  • the device in this embodiment may be used to perform the technical solution of the method embodiment shown in any of FIG. 2 to FIG. 4, and the implementation principle and technical effects are similar, and details are not described herein again.
  • the aforementioned program can be stored in a computer readable storage medium.
  • the steps of the foregoing method embodiments are performed; and the foregoing storage medium includes: Read-Only Memory (ROM), Random Access Memory (RAM), and Magnetic A variety of media that can store program code, such as a disc or a disc.

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

Abstract

La présente invention concerne un procédé et un dispositif de compression de paquets de données. Le procédé comprend les étapes suivantes : un UE reçoit un premier message émis depuis un appareil côté réseau. Le premier message contenant des informations d'instruction de compression visant à effectuer une compression unilatérale sur des paquets de données, et la compression unilatérale étant réalisée uniquement sur des paquets de données de liaison montante que l'UE émet vers l'appareil côté réseau ou uniquement sur des paquets de données de liaison descendante que l'UE reçoit de la part de l'appareil côté réseau. L'UE traite ensuite les paquets de données conformément aux informations d'instruction de compression. Par la mise en œuvre d'une compression unilatérale, le procédé de la présente invention permet non seulement d'économiser les ressources des ports au repos et d'accroître la capacité du réseau, mais réduit également les charges des processeurs de l'UE et de l'appareil côté réseau et prolonge la durée de vie des processeurs.
PCT/CN2016/074849 2016-02-29 2016-02-29 Procédé et dispositif de compression de paquets de données WO2017147754A1 (fr)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113133055A (zh) * 2019-04-30 2021-07-16 Oppo广东移动通信有限公司 无线通信的方法和设备

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CN102131234A (zh) * 2010-01-18 2011-07-20 华为技术有限公司 Ip数据包的压缩及解压缩方法和装置
CN102413506A (zh) * 2010-09-20 2012-04-11 华为技术有限公司 一种压缩方法与装置
WO2014110773A1 (fr) * 2013-01-17 2014-07-24 华为技术有限公司 Procédé et dispositif de traitement de paquets de données
WO2015109527A1 (fr) * 2014-01-24 2015-07-30 华为技术有限公司 Dispositif et procédé de compression d'en-tête

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102131234A (zh) * 2010-01-18 2011-07-20 华为技术有限公司 Ip数据包的压缩及解压缩方法和装置
CN102413506A (zh) * 2010-09-20 2012-04-11 华为技术有限公司 一种压缩方法与装置
WO2014110773A1 (fr) * 2013-01-17 2014-07-24 华为技术有限公司 Procédé et dispositif de traitement de paquets de données
WO2015109527A1 (fr) * 2014-01-24 2015-07-30 华为技术有限公司 Dispositif et procédé de compression d'en-tête

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113133055A (zh) * 2019-04-30 2021-07-16 Oppo广东移动通信有限公司 无线通信的方法和设备

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