Method for distributing and using mixing automatic retransmission request data outburst buffer zone

Abstract

The invention relates to a distributing and using method of burst buffer areas of hybrid automatic retransmission request data in an orthogonal frequency division multiplexing system. The method comprises the following steps: the hybrid automatic retransmission request memory areas are classified according the size of data packets; then statistics to the using condition of the hybrid automatic retransmission request memory areas is carried out in real time so as to lead the system to be capable of judging the cause of congestion and idleness of the buffer areas, thus dynamically adjusting theuse speed of of every type of buffer areas. By post adjustment, the invention avoids the defects brought by fixing the size and the number of the buffer areas in the prior period so as to lead the use of the buffer areas to be capable of being applicable to the operation of the system flexibly and lead the utilization ratio of the buffer areas of the system neither to be tight nor to be wasted.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a method for allocating and using a hybrid automatic repeat request (Hybrid Automatic Repeat Request, HARQ) technical data burst buffer in an orthogonal frequency division multiplexing system. Background technique [0002] In the field of modern wireless communication, the reliability requirements of data transmission are getting higher and higher. At present, many systems generally adopt HARQ technology, which combines Automatic Repeat Request (ARQ) technology and forward error correction coding (Forward Error Correction , FEC) technology combined, ARQ technology can automatically request the sender to retransmit when receiving error information, thereby improving the reliability of transmission; and FEC technology can automatically correct error information to a certain extent without retransmission, thus Improve the transmission efficiency; HARQ technology absorbs the adv...

AI Technical Summary

Problems solved by technology

[0006] The memory space used to cache HARQ data bursts allocated for HARQ in the system is usually limited. If this memory area is roughly divided into several parts according to a certain size, and usually in order to meet the requirements of storing data bursts of all sizes For the purpose of transmission, it has to be divided according to the largest possible data burst size. In fact, different connections carry different services, and the sizes of different business data bursts are usually very different. Burst division will lead to serious waste. The number of bytes stored in a large number of buffers is quite different from the actual number of bytes that can be accommodated, resulting in waste. Moreover, because the HARQ memory space is limited, large cache blocks will inevitably lead to The number of buffers is small, which leads to the limited bufferable HARQ data burst of the system, which affects the transmission efficiency of the system

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