Data transmission method and device
A data transmission method and a technology of a data transmission device, which are applied in the field of data transmission technology, can solve problems such as affecting downlink data transmission performance, large fluctuations, and poor user experience, so as to improve downlink data transmission performance, improve air interface utilization, and speed up The effect of sliding windows
Active Publication Date: 2016-05-25
HUAWEI TECH CO LTD
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Problems solved by technology
However, in the process of implementing the present invention, the inventors found that the methods of the prior art have at least the following problems: in the test of the live network, the rate of the downlink process of simultaneous uplink and downlink data transmission is low and the fluctuation is large. In the TCP layer, the ACK of the downlink data packet is usually arranged behind the uplink data packet, causing the ACK of the downlink data packet to be delayed, seriously affecting the performance of the downlink data transmission, and the user experience is poor
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[0021] An embodiment of the present invention provides a data transmission method. The data transmission process can be completed by a TCP function enhancement entity added on an intermediate node in the data transmission process between the sending end and the receiving end, such as a TCP proxy. Such as figure 1 As shown, the method may include:
[0022] S101, receiving the data packet sent by the sending end, and recording the information of the received data packet;
[0023] After receiving the data packets sent by the sender, record the serial numbers in sequence according to the order of the received data packets. The serial numbers can be incremented. The second packet is counted as 2...and so on. In order to avoid too many digits in the serial number, it can be added to a certain value and then re-numbered. For example, when the serial number reaches 65535, the serial number is re-numbered from 1, and this cycle repeats to meet the requirements of a large number of da...
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The embodiment of the invention discloses a data transmission method and device. The data transmission method mainly comprises the following steps of: receiving a data packet transmitted by a transmitting end and recording the information of the received data packet; transmitting the received data packet to a receiving end through a certain protocol layer; after the certain protocol layer receives data packet confirmation information transmitted by the receiving end to the transmitting end, searching the information of the recorded data packet according to a generated data packet mapping relation, wherein the data packet mapping relation is a corresponding relation between the recorded data packet and the data packet received by the certain protocol layer; and configuring an acknowledgement (ACK) message to be transmitted to the transmitting end according to the searched information of the data packet. By adopting the method and device provided by the embodiment of the invention, the ACK is actively configured and transmitted to the transmitting end, so that the uplink and downlink data transmission rates are increased.
Description
[0001] This application is a divisional application for an invention patent application whose filing date is July 17, 2008, and whose application number is 200810141665.9, and its name is a data transmission method and device. technical field [0002] The embodiment of the present invention relates to the field of mobile communication, especially to a data transmission technology. Background technique [0003] For packet PS services in the wireless field, the transmission control protocol TCP is generally used. In wireless networks, characteristics of wireless networks such as high latency, variable data rates, asymmetry, latency spikes, and bandwidth jitter all affect TCP performance. With the continuous development of the use of data services, the quality of service QoS required by users will also become higher and higher. How to improve the transmission performance of TCP in the wireless bearer is particularly important. [0004] For simultaneous uplink and downlink data...
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IPC IPC(8): H04L1/16
Inventor 廖军华张岩强
Owner HUAWEI TECH CO LTD