Journal of Beijing University of Posts and Telecommunications

  • EI核心期刊

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2006, Vol. 29 ›› Issue (4): 69-72.doi: 10.13190/jbupt.200604.69.wangw

• Papers • Previous Articles     Next Articles

Research on the Congestion Control Algorithm of CDMA Systems

WANG Wei, GAO Yue-hong, YANG Da-cheng   

  1. School of Telecommunication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • Received:2005-08-23 Revised:1900-01-01 Online:2006-08-30 Published:2006-08-30
  • Contact: WANG Wei

Abstract:

An adaptive congestion control algorithm in code division multiple access (CDMA) systems from the aspect of reducing cost is proposed. In this scheme, data rates in probabilistic manner according to a reverse activity bit (RAB) and an adaptive probability value broadcasted by the base station are increased or reduced in data mobiles, whereas the adaptive probability value is dynamically adjusted on the basis of the residual capacity of system. It is proved by analysis in theory and system level simulation that the adaptive congestion control algorithm can enlarge system throughput while controlling system load.

Key words: adaptive, congestion control, reverse activity bit, probabilistic manner, code division multiple access

CLC Number: