Data compression transmitting and decompression method and apparatus

Abstract

An embodiment of the invention discloses a data compression transmitting and decompression method and an apparatus, relates to the field of wireless communication, and is used for optimizing a data compression scheme. In the method, a transmitting terminal divides data to be transmitted into packets, and as for each packet: a shift factor is determined according to a highest order bit of sampling point data of the largest value after a sign bit is removed in the packet, and left shift is conducted respectively for data bits of the sampling point data in the packet according to the shift factor; quantization processing is carried out respectively for the sampling point data after the left shift, so that the number of bits of the sampling point data after the quantization processing is equal to the target number of bits of compression; and the shift factor and the sampling point data after the quantization processing are transmitted to the receiving terminal, the receiving terminal carries out de-quantization processing respectively for the sampling point data, right shift is conducted respectively for the data in the sampling point data after the de-quantization processing according to the shift factor, and decompressed sampling point data are obtained. According to the invention, the performance of the data compression is optimized.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a data compression sending and decompression method and device. Background technique [0002] The base station (eNB) of the long-term evolution (LTE) / long-term evolution upgrade (LTE-A) system is a distributed base station equipment, which is composed of a baseband unit (BBU) and a radio frequency remote equipment (RRU). It is a flexible Combinations of base stations for distributed installations such as figure 1 shown. The RRU is connected to the BBU through an Ir interface. [0003] The current Ir interface uses optical fiber and other transmission media. If the Ir interface data is compressed by effective technical means, the demand for transmission media can be greatly reduced, the cost of equipment can be reduced, and the market competitiveness of products can be improved. [0004] In the LTE system, an existing Ir interface data compression scheme is as follows: thr...

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Problems solved by technology

[0005] It can be seen that the compression ratio of the prior art is low, and the generality of the algorithm is not strong. When the input signal is uniformly distributed, uniform quantization is the best quantizer, but when the input signal is non-uniformly distributed, simple uniform quantization is not good for The distribution of quantization levels is not reasonable enough to fully remove redundant components in the signal

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