Method and apparatus for reducing delay time of wireless communication service

Abstract

The present invention discloses a method for reducing the time delay of the radio communication service and a device thereof. Through adding temporary flow identification TFI field in a radio link control / medium access control RLC / MAC head, a TFI and the block sequence number BSN in the radio data block are established with a corresponding relationship. The corresponding position in the RLC / MAC head is filled in the TFI corresponding with the TBF when the radio link control RLC data block of at least one temporary block flow TBF is mapped is mapped to a same radio block. The different services are discriminated with the difference of the TFI which is read in receiving of the receiving end, and the purpose of reducing the service time delay is realized. At the same time device disclosed by the invention can realize the generation, transmission and reception to the TFI field data block and realizes the purpose of reducing the time delay of the communication service.

Description

technical field [0001] The invention relates to wireless communication technology, in particular to a method and device for reducing time delay of wireless communication services. Background technique [0002] At present, low-speed data mainly includes voice over IP (VoIP Voice Over IP) data, instant messages, video streams with low resolution, and confirmation feedback information during wireless communication transmission. These data have one thing in common, that is, the size of a single data packet is relatively small, and the requirement for delay is relatively high. [0003] Taking the VOIP service as an example to introduce low-speed data transmission, the current VOIP service uses Adaptive Multi Rate (AMR, Adaptive Multi Rate) speech coding as the source code. The speech rates of AMR speech coding in the prior art mainly include 4.75Kbps, 5.90Kbps, 7.95Kbps and 12.20Kbps. The size of an AMR voice frame arriving at the Radio Link Control (RLC, Radio Link Control) la...

AI Technical Summary

Problems solved by technology

When low-speed data is transmitted on such a wireless block, due to the characteristics of low-speed data, it is generally divided into more small data packets for transmission. As a result, many small data packets can be accommodated on one wireless block. When the sender needs to send the low-speed data, it must obtain all the data that belongs to the same data that needs to be sent on a wireless block before packaging and sending it, causing serious delay

Still taking the AMR voice service as an example, an AMR voice message is generally sent in the form of multiple AMR voice frames, and these AMR voice frames generally arrive one after another. In this way, in order to form a wireless block, multiple frames must be extracted. The AMR voice frames belonging to the same ARM voice information will cause a long waiting delay for extracting these AMR voice frames, and the delay of completing the packaging will increase accordingly, and finally the total delay of the service will also increase, thus affecting Real-time transmission of AMR voice information

[0007] For example, under normal circumstances, the delay of an AMR voice frame is 20ms. When the MCS-9 coding method is used, a wireless block can accommodate 5 AMR voice frames at most, so that all 5 AMR voice frames need to be received. frame, the waiting time for the first AMR frame will be 100ms (20ms multiplied by 5), such a delay cannot be received for AMR voice services that are sensitive to delay requirements

Similarly, in other similar services, such a high delay cannot meet the needs of actual use

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