北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 1999, Vol. 22 ›› Issue (2): 77-80.

• 研究报告 • 上一篇    下一篇

快速包交换技术在CDMA基站中的应用

段世平, 王文博, 杨大成   

  1. 北京邮电大学电信工程学院, 北京 100876
  • 收稿日期:1998-08-10 出版日期:1999-03-10

The Fast Packet Switching Technology Used in CDMA Base Station

Duan Shiping, Wang Wenbo, Yang Dacheng   

  1. School of Telecommunication Engineering, Beijing University ofPosts and Telecommunications, Beijing 100876
  • Received:1998-08-10 Online:1999-03-10

摘要: 针对ATM及帧中继在窄带实时业务方面的局限性, 提出了一种结合二者优点的变长包硬件交换方案: 采用长度在120个字节以内的变长帧结构, 根据帧头的DLCI值由硬件完成分组的传递与交换, 以有效地支持窄带实时话音业务及宽带数据业务.在实现上, 自行设计了相关的整套交换芯片组.该方案现已成功地应用在自主研制的CDMA基站中.

关键词: 码分多址联接, 帧中继, 快速包交换

Abstract: To the problem of unsuitable use in narrow band realtime service with ATM and frame-relay, A scheme of fast variable length packet switching through hardware implementation which combine with the advantages ofATM and frame-relay is given to support narrow band real time voice services andwide band data services effectively. In scheme, the variable length frame structure is used, the maximum length is limited less than 120 bytes, packets are transfered and switched according to DLCI located in the head of the frame. To implement the system, we designed the entire relative switching chipset. Now the scheme is used successfully in CDMA base station developed by ourselves.

Key words: CDMA, frame-relay, faster packet switching

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