Segment-based code assignment in high speed downlink packet access networks

被引：0
|
作者：
Kuo, WH [1 ]
Liao, WJ [1 ]
机构：
[1] Natl Taiwan Univ, Dept Elect Engn, Taipei 10764, Taiwan
来源：
PIMRC 2003: 14TH IEEE 2003 INTERNATIONAL SYMPOSIUM ON PERSONAL, INDOOR AND MOBILE RADIO COMMUNICATIONS PROCEEDINGS, VOLS 1-3 2003 | 2003年
关键词：
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this paper, we study the code assignment problem in High Speed Downlink Packet Access (HSDPA) Networks. In HSDPA, the spreading factor of codes is fixed at 16, and the maximum number of bits reserved for code assignment transmitted on the control channel is limited to 64 bits. This high control overhead may lead to inefficiencies in HSDPA systems when the number of mobile nodes in a cell becomes large. Existing code assignment mechanisms allow codes with different spreading factors to be allocated, rendering them inadequate for HSDPA systems. In this paper, a new segment-based code assignment mechanism is proposed. In our mechanism, 16 codes are grouped into several segments. Since the number of codes in each segment is reduced, the corresponding signaling overhead is also reduced. The load of each channel is then balanced in each segment so as to maximizing the system performance.
引用
收藏
页码：657 / 660
页数：4
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