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Transmission channel data buffer method

A technology of transmission channel and data cache, applied in the direction of communication between multiple stations, can solve the problems of unsuitable application, multi-processor time, occupation, etc., to avoid low processing efficiency, simple hardware implementation, and reduced memory resources. Effect

Inactive Publication Date: 2010-04-21
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] The disadvantage of this solution is that the processing efficiency of software is low, and it takes up too much processor time, so it is not suitable for wireless terminal devices such as mobile phones.

Method used

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Embodiment Construction

[0024] The transmission channel data caching method of the present invention can be applied to wireless terminals such as mobile phones to perform caching processing of data before downlink channel decoding or uplink channel coded data, and various available storage media can be used for the memory used in the present invention without loss of generality. In the following specific embodiments, RAM is used as the memory as an example for illustration.

[0025] refer to figure 2 , which is a schematic diagram of a transmission channel storage location of a specific embodiment of the transmission channel data caching method of the present invention.

[0026] When designing the cache, a piece of RAM with a fixed size is used in this embodiment, and according to the different services currently carried by the mobile phone, the memory (i.e. RAM) for buffering the transmission channel data is divided into storage blocks with the maximum transmission time interval wireless frame numb...

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Abstract

This invention discloses a data transmission channel caching method, which includes: a dividing the reservoir of the caching transmission channel data into memory blocks of maximum transmission time interval wireless frame numbers; b confirming that each transmission channel time interval in the wireless link is correspondent with each block of wireless frame data; c when receiving transmission channel data, writing each wireless frame data in the corresponding reservoir to cache. This invention is easy to realize, which uses minimum memory sources to realize transmission channel data caching.

Description

technical field [0001] The present invention relates to a method for data buffering, more specifically, the present invention relates to a data buffering method before decoding or after encoding of a 3rd Generation Partnership Project (3GPP, 3rd Generation Partnership Project) physical layer transmission channel. Background technique [0002] In the 3GPP mobile communication system, before the baseband transmission channel is mapped to the physical channel, the transmission channel coding is performed. Usually, in order to resist the fading of the wireless channel, after the transmission channel coding, a data packet is divided into several wireless frames and mapped to the physical channel. , The 3GPP protocol stipulates that data is divided into 1, 2, 4, and 8 wireless frames, called a transmission time interval (TTI, Transmission Time Interval), and a second interleaving is used before the transmission channel is finally mapped into a physical channel. The first interleav...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/26
Inventor 沈建海
Owner HUAWEI TECH CO LTD