WO2010028593A1 - Procédé de transmission, dispositif et équipement de communication de paquets de données d’un protocole de contrôle de transmission - Google Patents

Procédé de transmission, dispositif et équipement de communication de paquets de données d’un protocole de contrôle de transmission Download PDF

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Publication number
WO2010028593A1
WO2010028593A1 PCT/CN2009/073827 CN2009073827W WO2010028593A1 WO 2010028593 A1 WO2010028593 A1 WO 2010028593A1 CN 2009073827 W CN2009073827 W CN 2009073827W WO 2010028593 A1 WO2010028593 A1 WO 2010028593A1
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WIPO (PCT)
Prior art keywords
packet
receiving
window
tcp
unit
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PCT/CN2009/073827
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English (en)
Chinese (zh)
Inventor
廖军华
童长华
曾伟军
雷博
袁春红
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华为技术有限公司
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Publication of WO2010028593A1 publication Critical patent/WO2010028593A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1825—Adaptation of specific ARQ protocol parameters according to transmission conditions

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a transmission control protocol (TCP: Transmit Control Protocol) data packet transmission method, device, and communication device.
  • TCP Transmission Control Protocol
  • the traffic of the TCP protocol is controlled by the size of the received receiving window at each end of the connection, that is, after receiving the acknowledgement packet (ACK packet: Acknowledgment packet) sent by the receiving end, the transmitting end knows the receiving end receiving. The window then sends the data in the receiving window of the receiving end.
  • ACK packet Acknowledgment packet
  • the inventor of the present invention finds that if the receiving capability declared by the receiving end is too small, that is, the receiving window declared by the receiving end is too small, it is easy to cause data in the transmission pipeline from the transmitting end to the receiving end. If the amount is too small, the data transmission efficiency of the air interface is low, especially in the case of a high air interface bandwidth, the defect is more obvious, resulting in low throughput performance and affecting the user's service experience.
  • the embodiment of the invention provides a method, a device and a communication device for transmitting a TCP data packet.
  • a method for transmitting a TCP packet includes:
  • a device for transmitting a TCP packet includes:
  • a first receiving unit configured to receive an ACK packet sent by the receiving end
  • a first setting unit configured to increase a receiving window of the ACK packet received by the first receiving unit, where the first sending unit is configured to send the ACK packet after the first setting unit increases the receiving window to the sending end;
  • a third receiving unit configured to receive a data packet sent by the sending end, where the data packet is sent by the sending end according to the ACK packet sent by the first sending unit;
  • a third sending unit configured to send, by the window of the receiving window that is greater than or equal to the original ACK packet, the data packet received by the third sending unit to the receiving end.
  • a communication device provided by an embodiment of the present invention includes the foregoing TCP packet transmission apparatus provided by the present invention.
  • the TCP packet transmission device After receiving the ACK packet sent by the receiving end, the TCP packet transmission device in the embodiment of the present invention increases the receiving window of the ACK packet and sends it to the transmitting end, so that the TCP packet transmission device can obtain the sending end in advance.
  • the incoming data packet is then sent to the receiving end in a larger window, thereby increasing the transmission rate, and also providing sufficient data for the air interface, so that the air interface resources are fully utilized, the TCP transmission performance is improved, and the performance is improved.
  • the throughput performance of the network enhances the user's business experience.
  • FIG. 1 is a schematic flowchart of a TCP packet transmission method according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of a universal terrestrial radio access network protocol stack (UTRAN) according to an embodiment of the present invention
  • FIG. 3 is a schematic flowchart of another TCP packet transmission method according to an embodiment of the present invention
  • FIG. 4 is a schematic flowchart of another TCP packet transmission method according to an embodiment of the present invention
  • FIG. 6 is a schematic structural diagram of another TCP data packet transmission apparatus according to an embodiment of the present invention. detailed description
  • Embodiments of the present invention provide a method for transmitting a TCP data packet. Embodiments of the present invention also provide corresponding devices and communication devices. The details are described below separately.
  • a method for transmitting a TCP data packet is provided in the embodiment of the present invention.
  • a TCP data packet transmission device such as a TCP proxy, is provided on the network side, and the TCP proxy increases the reception of the ACK packet after receiving the ACK packet sent by the receiving end.
  • the window is sent to the transmitting end, and then the receiving end transmits the data packet according to the ACK packet of the increased receiving window, and sends the data packet to the receiving end in a window of a receiving window greater than or equal to the original ACK packet.
  • the receiving end may specifically be a mobile terminal or a server; the corresponding sending end is a server or a mobile terminal.
  • the TCP proxy receives the ACK packet from the receiving end.
  • the TCP proxy increases a receiving window of the ACK packet.
  • the TCP proxy sends the ACK packet after the receiving window is sent to the sending end.
  • the TCP proxy receives the data packet sent by the sending end, and the data packet is sent by the sending end according to the ACK packet after the receiving window is increased.
  • the transmitting end After receiving the ACK packet after the receiving window is increased, the transmitting end considers that the receiving window of the receiving end is the second window, and then sends the data packet to the TCP proxy by using the second window as the window, because the second window is larger than the first window.
  • the window's therefore, the amount of data that the TCP proxy gets from the sender is naturally more in the same amount of time.
  • the TCP proxy sends the data packet to the receiving end in a window that is greater than or equal to the receiving window of the original ACK packet.
  • the embodiment increases the The receiving window of the ACK packet is sent to the transmitting end, so that the TCP proxy can obtain the data packet sent by the sending end in advance, and then the TCP proxy sends the data packet to the receiving end in a window of the receiving window greater than or equal to the original ACK packet, thereby
  • the transmission rate is improved, and sufficient data is provided for the air interface, so that the air interface resources are fully utilized, the TCP transmission performance is improved, the throughput performance of the network is improved, and the user experience is enhanced.
  • the TCP packet transmission device such as a TCP proxy, may be implemented by adding a packet to a Packet Data Convergence Protocol (PDCP) layer in a Radio Network Controller (RNC) entity.
  • PDCP Packet Data Convergence Protocol
  • RNC Radio Network Controller
  • TCP performance enhancement module that is, the TCP Performance Enhancer (hereinafter referred to as TPE), and the protocol stack of the Universal Terrestrial Radio Access Network (UTRAN) after adding the TPE can be seen in FIG. 2.
  • the TPE module can be a separate module, or the TPE module can be set on the GPRS (General Packet Radio Service) support node (SGSN: Serving GPRS Support Node) or the TPE module can be set in the gateway GPRS support. On the node (GGSN: Gateway GPRS Support Node).
  • GPRS General Packet Radio Service
  • SGSN Serving GPRS Support Node
  • GGSN Gateway GPRS Support Node
  • the embodiment of the present invention does not limit the implementation manner of the TPE and the network element where the TPE is located.
  • the TPE has a function of parsing a Transmission Control Protocol/Internet Protocol (TCP/IP: Transmit Control Protocol/Internet Protocol) packet, and can distinguish the first handshake packet of the TCP connection by using the information of the TCP packet header, and the TCP connection number. Three-way handshake packets, ACK packets and data packets, and deal with them accordingly.
  • TCP/IP Transmission Control Protocol/Internet Protocol
  • the receiving end In order to establish a connection between the receiving end and the transmitting end, the receiving end initiates a handshake packet to the transmitting end. After receiving the handshake packet sent by the receiving end, that is, the first handshake packet of the TCP connection or the third handshake packet of the TCP connection, the TPE records the size of the receiving window of the handshake packet, and selects the TCP header of the handshake packet. The expansion factor (Window Scaling) is increased, and then the handshake packet after the expansion factor is increased is sent to the transmitting end.
  • Window Scaling Winddow Scaling
  • the receiver After the receiver establishes a connection with the sender, the receiver will receive the packet from the sender. Send an ACK packet to the sender for data transmission.
  • the TPE After receiving the ACK packet sent by the receiving end, the TPE records the receiving window of the ACK packet, that is, records the size of the original receiving window of the ACK packet, and then increases the receiving window, for example, the receiving window may be increased. It is 64kbytes, and the pre-increasing receiving window is usually 17 bytes, and the ACK packet after the receiving window is increased is sent to the transmitting end.
  • the sending end After the receiving end establishes a connection with the sending end, the sending end sends a data packet to the receiving end. If the TPE does not set the expansion factor during the process of establishing the TCP connection, the window size is the window after the TPE is increased; if the expansion factor is set, The window size is the power of the TPE and the window is multiplied by the expansion factor of 2.
  • the TPE receives the data packet sent by the sender, and sets the push PUSH flag of the TCP packet header to 1.
  • the flag is used to instruct the receiver to submit the data packet from the TCP layer to the application layer immediately after receiving the data packet, so as to reduce the TCP cache space. Occupied, and then send a data packet to the receiving end by using K times of the receiving window of the recorded ACK packet, where K is a preset value, which may be an integer or a score, and may be performed according to an operator's policy. Set, and K is greater than or equal to 1.
  • another TCP packet transmission method provided by an embodiment of the present invention may be: 3 ⁇ 4:
  • the receiving end sends a handshake packet to the TPE.
  • connection between the receiving end and the transmitting end can be established by sending a handshake packet.
  • the TPE After receiving the handshake packet, the TPE records the size of the receiving window of the handshake packet.
  • the TPE sets the expansion factor in the TCP header option of the handshake packet, that is, Window Scaling.
  • the extension primer can be further increased.
  • the TPE sends the handshake packet after the expansion factor is increased to the sending end to establish a connection.
  • the receiving end After the connection between the receiving end and the sending end is successfully established, the receiving end sends an ACK packet to the TPE after receiving the data packet from the sending end.
  • the TPE After receiving the ACK packet sent by the receiving end, the TPE records the receiving window in the ACK packet.
  • the TPE increases a receiving window in the ACK packet.
  • the TPE sends the ACK packet after the receiving window is increased to the sending end.
  • the sending end After receiving the ACK packet after the receiving window is increased, the sending end sends the data packet to the TPE according to the ACK packet after the receiving window is increased.
  • the sender sends the data packet to the TPE by multiplying the increased reception window by the expansion factor of 2, and the expansion factor refers to The already set or increased expansion factor received by the sender.
  • the TPE After receiving the data packet sent by the sender, the TPE sets the push PUSH flag of the TCP packet header to 1.
  • the PUSH flag is used to instruct the receiving end to submit the data packet from the TCP layer to the application layer immediately after receiving the data packet, so as to reduce the occupation of the TCP cache space.
  • the TPE caches the data packets, and sends the data packet to the receiving end at a higher rate.
  • the TPE sends a data packet to the receiving end by using K times of the receiving window of the recorded ACK packet (ie, the receiving window of the original ACK packet), where K is a preset value, which can be set according to the operator's policy. , and K is greater than or equal to 1.
  • the receiving end receives the data packet.
  • the TPE increases the receiving window of the ACK packet and the expansion factor of the handshake packet, the data packet sent by the transmitting end is multiplied by the transmission factor of the ACK packet by the window of the expansion factor of 2, so In this way, the TPE can obtain some data of the sending end in advance, and then the TPE sends the data packet to the receiving end at a higher rate, for example, by using K times of the receiving window of the recorded ACK packet as a window.
  • Sending a data packet to the receiving end so that the transmission pipeline of the transmitting end and the receiving end have more data volume, and to some extent, avoiding the radio link control buffer occupation (RLC BO: Radio Link Control Buffer Occupy) emptying, resulting in no air interface.
  • RLC BO Radio Link Control Buffer Occupy
  • the receiving window in the ACK packet returned by the receiving end to the TPE is dynamically changed.
  • the receiving window in the ACK packet in this embodiment may also be referred to as an ACK packet. Announcement window.
  • the receiving window in the ACK packet recorded in step 206 is actually the advertising window of the ACK packet.
  • the embodiment of the present invention may also make a judgment before the TPE sends the data packet to the receiving end, that is, whether the receiving window (or the advertising window) of the recorded ACK packet is smaller than M times the receiving window of the recorded handshake packet, the M is a preset value, and is an adjustable value, and M is less than or equal to 1. If yes, it indicates that the data of the receiving end may overflow, and the TPE stops sending the data. The packet is sent to the receiving end; if not, it indicates that the data of the receiving end does not overflow, the TPE sends a data packet to the receiving end by using K times of the receiving window of the recorded ACK packet, where K is a preset value. , can be configured according to the operator's policy, and K is greater than or equal to 1.
  • the TPE can also maintain a table in which the serial number and the packet length of the packet it receives are recorded, and then the TPE can be based on the record.
  • the serial number and the packet length determine whether the data packet sent by the sending end is lost. For example, it can be determined whether the serial number in the table is continuous; if the packet loss is determined, the receiving window of the recorded ACK packet is sent as a window, and the sending The data packet is sent to the receiving end; if it is determined that there is no packet loss, the data packet is sent to the receiving end by using K times of the receiving window of the recorded ACK packet as a window.
  • the receiving end may be a mobile terminal or a server, and the corresponding sending end is a server or a mobile terminal.
  • the following provides a detailed description of the solution provided by the embodiment of the present invention, such as the receiving end being the mobile terminal and the sending end being the server.
  • the specific process can be as follows:
  • the mobile terminal sends a handshake packet to the TPE.
  • the TPE After receiving the handshake packet, the TPE records the receiving window of the handshake packet.
  • the TPE may set an expansion factor in the TCP header option of the handshake packet.
  • the expansion factor can be increased.
  • the TPE sends the handshake packet with the setting or the expansion factor to the server to establish a connection between the mobile terminal and the server.
  • the TPE After receiving the ACK packet sent by the mobile terminal, the TPE records the receiving window of the ACK packet.
  • the TPE increases a receiving window of the ACK packet.
  • the TPE sends the ACK packet after the receiving window is increased to the server.
  • the server After receiving the ACK packet after the receiving window is increased, the server increases the receiving according to the The receiving window of the ACK packet after the window sends a data packet to the TPE.
  • the server sends the data packet to the TPE by multiplying the increased reception window by the expansion factor of 2, and the expansion factor refers to the server.
  • the TPE After receiving the data packet sent by the server, the TPE caches the data packets, and records the serial number and the packet length of the data packets.
  • the TPE sets the PUSH flag of the TCP header of the data packet to 1.
  • the PUSH flag is used to instruct the mobile terminal to submit the data packet from the TCP layer to the application layer immediately after receiving the data packet, so as to reduce the occupation of the TCP cache space.
  • the TPE determines whether the receiving window of the recorded ACK packet is less than M times of the receiving window of the recorded handshake packet, that is, whether it is possible to cause the data of the receiving end to overflow. If yes, step 313 is performed, and if no, the step is performed. 314; wherein, M is a preset value, is an adjustable value, and M is less than or equal to 1.
  • the TPE stops sending data packets to the mobile terminal, and ends the process.
  • the TPE determines whether the packet is lost according to the sequence number and the packet length of the data packet recorded in step 312. If the packet loss is determined, step 315 is performed. If it is determined that there is no packet loss, step 316 is performed.
  • the TPE sends a data packet to the mobile terminal by using a receiving window of the recorded ACK packet as a window, and then executing 317.
  • the TPE sends a data packet to the mobile terminal by using K times of the receiving window of the recorded ACK packet, where K is a preset value, and may be set according to an operator's policy, and >1.
  • the mobile terminal receives the data packet.
  • the TPE since the TPE increases the receiving window of the ACK packet, some data of the transmitting end can be obtained in advance, and after receiving the data, the TPE can record the serial number and the packet length of the data packet to detect whether the packet is lost.
  • the TPE can also control whether to send the data packet to the receiving end by determining whether the received window of the recorded ACK packet is less than M times of the receiving window of the recorded handshake packet, so as to prevent the data of the receiving end from overflowing.
  • the data packet is sent to the receiving end by using K times of the receiving window of the recorded ACK packet as a window, thereby realizing that the TPE can exceed the receiving capability declared by the receiving end, that is, The high rate sends the data packet to the receiving end, so that the transmission pipeline of the transmitting end and the receiving end has more data volume, which avoids the phenomenon that the RLC BO is emptied and the air interface has no data to be transmitted, thereby improving the TCP. Transmission performance, throughput performance of the network Gain, enhances the user's business experience.
  • steps 312 and 313 may be omitted, that is, the process of judging whether the data of the receiving end will overflow is omitted, and whether the packet is lost or not is directly determined.
  • the embodiment of the present invention further provides a transmission device for a TCP data packet, as shown in FIG. 5, which mainly includes:
  • the first receiving unit 401 is configured to receive an ACK packet sent by the receiving end;
  • the first setting unit 402 is mainly configured to increase a receiving window in the ACK packet received by the first receiving unit 401;
  • the first sending unit 403 is configured to send the ACK packet after the first setting unit 402 increases the receiving window to the sending end;
  • the third receiving unit 404 is configured to receive the data packet sent by the sending end 7, and the data packet is sent by the sending end 7 according to the ACK packet sent by the first sending unit 403;
  • the third sending unit 405 is configured to send the data packet received by the third receiving unit 404 to the receiving end by using a window that is greater than or equal to the receiving window of the original ACK packet.
  • the transmission device of the TCP packet may further include a first recording unit 406, configured to record a receiving window in the ACK packet received by the first receiving unit 401;
  • the third sending unit 405 is specifically configured to send a data packet to the receiving end by using K times of the receiving window of the ACK packet recorded by the first recording unit 406 as a window, where K is a preset value, and may be according to an operator.
  • K is a preset value, and may be according to an operator.
  • the policy is set, and K is greater than or equal to 1.
  • the transmitting device of the TCP data packet provided by the embodiment of the present invention may further include: a second receiving unit 407 , mainly used for receiving a handshake packet sent by the receiving end;
  • the second recording unit 408 is mainly configured to record a receiving window of the handshake packet received by the second receiving unit 407;
  • the second setting unit 409 is mainly configured to increase an expansion factor in the TCP packet header of the handshake packet received by the second receiving unit 407;
  • the second sending unit 410 is mainly configured to send the handshake packet after the second setting unit 409 increases the expansion factor to the transmitting end.
  • the device may also include:
  • the first determining unit 411 is configured to determine whether the receiving window of the request packet recorded by the first recording unit 406 is less than M times of the receiving window of the handshake packet of the second recording unit record 408, that is, whether the data of the receiving end is overflowed.
  • M is a preset value, which can be set according to the operator's policy, and M is less than or equal to 1.
  • the third sending unit 405 is further configured to: when the first determining unit 411 determines that the receiving window of the ACK packet recorded by the first recording unit is not less than M times of the receiving window of the handshake packet recorded by the second recording unit, the first recording unit The K times of the receiving window of the ACK packet recorded by 406 is a window, and the data packet is sent to the receiving end, where K is a preset value, which can be set according to an operator's policy, and K is greater than or equal to 1.
  • the transmission device of the TCP data packet may further include:
  • the third recording unit 412 is mainly configured to record the sequence number and the packet length of the data packet received by the third receiving unit 404;
  • the second determining unit 413 is configured to determine, according to the sequence number and the packet length recorded by the third recording unit 412, whether the data packet sent by the sending end 7 is lost;
  • the third sending unit 405 is further configured to: when the second determining unit 413 determines that the packet is lost, send the data packet to the receiving end by using the receiving window of the ACK packet recorded by the first recording unit 406 as a window.
  • the transmission device of the TCP data packet may further include:
  • the third setting unit 414 is mainly configured to set the push PUSH flag of the data packet TCP packet header received by the third receiving unit 404 to 1, and the flag is used to instruct the receiving end to submit the data packet to the application from the TCP layer immediately after receiving the data packet. Floor.
  • the third sending unit 405 is further configured to send the data packet set by the third setting unit 414 to the receiving end.
  • FIG. 5 and FIG. 6 only to describe the transmission device of the TCP packet more clearly.
  • the transmission device of the TCP packet may be a TPE, and the receiving end may be a mobile terminal or a server, and the corresponding sending end may be a server or a mobile terminal.
  • the transmission device of the TCP packet is taken as an example of the TPE, and the specific steps may be as follows:
  • Step 1 The second receiving unit 407 of the TPE receives the handshake packet sent by the receiving end.
  • Step 2 The second recording unit 408 records the receiving window of the handshake packet received by the second receiving unit 407.
  • Step 3 The second setting unit 409 sets the expansion factor in the TCP header option of the handshake packet received by the second receiving unit 407, that is, Window Scaling, or if the expansion factor has been previously set, the setting may be performed. a good expansion factor is increased;
  • Step 4 The second sending unit 410 sends the handshake packet after the second setting unit 409 is set or increased by the expansion factor to the transmitting end, to establish a connection between the receiving end and the transmitting end 7;
  • Step 5 After the connection is successfully established, the first receiving unit 401 receives the ACK packet sent by the receiving end.
  • Step 6 The first recording unit 406 records the receiving window of the ACK packet received by the first receiving unit 401.
  • Step 7 The first setting unit 402 increases the receiving window in the ACK packet received by the first receiving unit 401;
  • Step VIII The first sending unit 403 sends the first setting unit 402 to increase the ACK packet after receiving the window to the transmitting end 7 for subsequent data transmission;
  • Step IX The third receiving unit 404 receives the data packet sent by the transmitting end 7, and the data packet is a transmitting end.
  • the receiving window of the ACK packet to be received is multiplied by the expansion factor of 2 as a window to send a data packet to the TPE;
  • Step ten the third recording unit 412 records the serial number and the packet length of the data packet received by the third receiving unit 404;
  • Step 11 The third setting unit 414 sets the PUSH flag of the TCP packet header of the data packet received by the third receiving unit 404 to 1, and the flag indicates that the receiving end submits the data packet from the TCP layer to the application layer immediately after receiving the data packet. , in order to reduce the occupation of TCP cache space;
  • Step 12 The first determining unit 411 determines whether the receiving window of the ACK packet recorded by the first recording unit 406 is smaller than M times of the receiving window of the handshake packet recorded by the second recording unit 408, and the M is a preset value, which is Adjust the value, and M is less than or equal to 1;
  • Step 13 If yes, stop sending the data packet to the receiving end, and the transmission process ends; Step 14; if not, the third sending unit 405 records the data according to the third recording unit 412. The serial number and length of the packet determine whether the packet is lost;
  • Step 15 If it is determined that the packet is lost, the receiving window of the handshake packet recorded by the second recording unit 408 is a window, and the third sending unit 405 sends the data packet to the receiving end;
  • Step 16 If it is determined that there is no packet loss, the K times of the receiving window of the ACK packet recorded by the first recording unit 406 is a window, and the third sending unit 405 sends a data packet to the receiving end, where K is a preset value. , can be set according to the operator's policy, and K is greater than or equal to 1.
  • the transmission device of the TCP packet increases the receiving window of the ACK packet, some data of the transmitting end can be acquired in advance, and the transmitting device of the TCP packet can receive the data packet sent by the transmitting end, Recording the serial number and packet length of the data packet to detect whether the packet is lost, and controlling whether to send the data packet to the receiving device by determining whether the receiving window of the recorded request packet is smaller than M times of the receiving window of the recorded handshake packet.
  • the data packet is sent to the receiving end by using K times of the receiving window of the recorded ACK packet as a window, thereby achieving a higher
  • the rate sends the data packet to the receiving end, so that the transmission pipeline of the transmitting end and the receiving end has sufficient data volume, which avoids the phenomenon that the RLC BO is emptied and the air interface has no data to be transmitted, thereby improving the TCP transmission performance.
  • the embodiment of the present invention further provides a communication device, including the foregoing TCP packet transmission apparatus provided by the present invention.
  • the communication device can be an RNC, or an SGSN, or a GGSN.
  • embodiments of the present invention have the following beneficial effects:
  • the TPE by adding a module TPE to the PDCP layer in the RNC entity, the TPE can increase the size of the receiving window of the ACK packet received by the TPE and the size of the handshake factor of the handshake packet, so that some data of the sending end can be obtained in advance; Moreover, after receiving the data packet sent by the transmitting end, the TPE can record the sequence number and the packet length of the data packet to detect whether the packet is lost. The transmission device of the TCP data packet can also determine the receiving window of the recorded ACK packet.
  • the receiving of the recorded ACK packet Whether it is less than M times of the receiving window of the recorded handshake packet to control whether to send a data packet to the receiving end to prevent the data of the receiving end from overflowing, and when it is determined that data overflow will not be caused, the receiving of the recorded ACK packet
  • the K times of the window is a window, and the data packet is sent to the receiving end, so that the data packet is sent to the receiving end at a higher rate, so that the transmission pipeline of the transmitting end and the receiving end has sufficient data amount, and the RLC BO is avoided to some extent. Emptying There is no data transmission phenomenon in the air interface, which improves the TCP transmission performance, improves the throughput performance of the network, and enhances the user's service experience to some extent.
  • the program may be stored in a computer readable storage medium, and the storage medium may include: Read only memory (ROM, Read Only Memory), random access memory (RAM), disk or optical disk.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Communication Control (AREA)

Abstract

La présente invention concerne un procédé de transmission de paquets de données d’un protocole de contrôle de transmission (TCP), qui comprend : la réception d’un paquet d’accusé de réception (ACK) qui est envoyé par une extrémité de réception; l’augmentation de la fenêtre de réception du paquet ACK reçu; l’envoi du paquet ACK qui augmente la fenêtre de réception à l’extrémité d’envoi; la réception des paquets de données qui sont envoyés selon le paquet ACK qui augmente la fenêtre de réception par l’extrémité d’envoi; l’envoi des paquets de données à l’extrémité de réception avec la fenêtre qui est plus grande ou égale à la fenêtre de réception du paquet ACK initial. La présente invention concerne également un dispositif de transmission de paquets de données TCP et un équipement de communication permettant de protéger le dispositif de transmission.
PCT/CN2009/073827 2008-09-12 2009-09-09 Procédé de transmission, dispositif et équipement de communication de paquets de données d’un protocole de contrôle de transmission WO2010028593A1 (fr)

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Application Number Priority Date Filing Date Title
CN 200810042963 CN101369875B (zh) 2008-09-12 2008-09-12 一种传输控制协议数据包的传输方法、装置及系统
CN200810042963.2 2008-09-12

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WO2010028593A1 true WO2010028593A1 (fr) 2010-03-18

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