Data frame retransmission method and system based on non response mechanism

Abstract

The invention provides a data frame re-transmit method based on non-response mechanism, which comprises: the wireless access terminal determines the error-frame based on said mechanism, and sends the label information of received-correct data in same carrier link frame to network side; the latter determines and transmits the data frame to be re-transmit according to received information. This invention simplifies the treatment process and information content, reduces NAK length, and improves response speed, re-transmit efficiency, and transmission efficiency for effective data in multicarrier DO system.

Description

technical field [0001] The invention relates to the technical field of wireless network communication, in particular to a data frame retransmission method and system based on a non-response mechanism. Background technique [0002] At present, 3G mobile communication technology is gradually becoming mature and commercially available. 3GPP2 (Third Generation Mobile Communication Cooperation Project Organization 2) CDMA20001XEV-DO (Evolution, Evolution, Data Only, only supports packet data services) will further provide competitive services in the next few years. Wireless access system. [0003] 1XEV-DO technology is a technology used to transmit high-speed packet data services. The maximum peak rate supported by each sector carrier frequency can reach 2.4Mbps. In version A, the peak rate can reach 3.1Mbps. However, in order to maintain competitiveness in the next decade or decades, it is necessary to introduce new wireless access technologies. [0004] At present, the indust...

AI Technical Summary

Problems solved by technology

[0038] It can be seen from the above description that in the existing data frame retransmission method based on the non-acknowledgment mechanism, the terminal device needs to In the case of a large number of forward carrier links, the complexity of judging the lost data frame by the wireless access terminal is greatly increased, so that the wireless access terminal cannot quickly detect the lost data frame. response

Moreover, the NAK control message assembled by the wireless access terminal carries the SAR_Seq sequence number of the RLP packet it received last from each carrier link, so that the length of the NAK control message is proportional to the number of carrier links. In practical applications, The SAR_Seq sequence number is generally 22 bits. When the number of carrier links increases, the length of the NAK control message is greatly increased, thereby reducing the transmission efficiency of effective data and reducing data throughput.

Images