关键词: 自适应, 拥塞控制, 反向激活比特, 概率方式, 码分多址

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