The medium access control Technology focuses on multi-address access, that is, how to coordinate users sharing a commonchannel to achieve efficient and reliable transmission.
媒体接入控制技术的核心问题是如何协调多个用户共用一个信道实现高效可靠传输，即多址接入问题。
2
It consists of a power compensation algorithm based on reverse channel prediction and a common closed -loop power control algorithm.
它由基于反向信道预测的功率补偿算法和常规闭环功率控制组合而成。
3
Because there is no power control in CPICH, the received common pilot signal power is possibly very low if the mobile is far from the base station, and this time the channel estimates is inaccurate.