Title :
The Research on Admission Control Algorithms in TD-SCDMA Trunking Communications System
Author :
Tang, Hong ; Wang, Wei ; Song, Guangxiu ; Liu, Jiezhen ; Yao, Sheng ; Zhang, Yan
Author_Institution :
Chongqing Key Lab. of Mobile Commun. Technol., Chongqing Univ. of Posts & Telecommun., Chongqing, China
Abstract :
The paper puts forward an improved admission control algorithm for the TD-SCDMA trunking communications system. According to the technical features of TDD (Time Division Duplex) and one downlink channel shared by multi-users in this system, the improved algorithm predicts the power increment of interference through the group´s target SIR (Signal to Interference Ratio) and bandwidth requirement. Then, the system decides that whether the new group be admitted by the increment. The simulation results of dropping rate and admission rate show that the improved algorithm can predict interference increment more accurately, reduces the influence of new call on system, and ensures the coverage of cell.
Keywords :
code division multiple access; radiofrequency interference; space division multiple access; telecommunication congestion control; time division multiple access; SIR; TD-SCDMA trunking communications system; TDD; admission control algorithms; downlink channel; interference increment; signal to interference ratio; time division duplex; Admission control; Algorithm design and analysis; Downlink; Interference; Prediction algorithms; Receivers; Time division synchronous code division multiple access;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing (WiCOM), 2011 7th International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-6250-6
DOI :
10.1109/wicom.2011.6036681
