应用于ROHC的窗基LSB编解码修正算法实现机制

Implementation Scheme of Window-based LSB Encoding and Decoding in ROHC

在移动IPv6中,常常因为数据分组的头标太大而消耗过多的带宽,因而需要使用灵活可靠的鲁棒性头标压缩机制(ROHC)来对分组头标进行压缩。在ROHC中,使用LSB编码方案对分组中那些变化比较小的头标域进行编码。本文将在简要介绍ROHC原理的基础上,深入探讨应用于ROHC的窗基LSB编解码修正算法的实现机制。

In mobile IPv6, large IPv6 headers can almost exhaust the scarce bandwidth resource if nothing to be done with it. Robust Header Compression (ROHC) technology is used to solve this problem. In ROHC, LSB encoding is employed to deal with IPv6 header fields whose values are usually subject to small changes. On the basic theory of ROHC, implementation scheme of LSB encoding and decoding algorithm is studied extensively. Accordingly, packet headers are compressed using Robust Header Compression (ROHC) algorithm. Principles of the LSB applied to ROHC are also elucidated. Adjustment is made to LSB method in accordance with RFC3095. Finally a practical window-based LSB encoding and decoding implementation scheme is presented.