The search functionality is under construction.
The search functionality is under construction.

A Dynamic Downlink Load Control Scheme for WCDMA and HSDPA Systems

Chang Soon KANG, Junsu KIM, Dan Keun SUNG

  • Full Text Views

    0

  • Cite this

Summary :

Mutual interference among users can abruptly increase othercell interference and cause overload situation in coexisting WCDMA and HSDPA systems. Traffic overloading can degrade the performance of the systems. This letter proposes a new dynamic downlink load control (DDLC) algorithm to reduce performance degradation due to overload in the coexistence of WCDMA and HSDPA systems. With the proposed algorithm, the downlink load is controlled according to load states classified by two load-control thresholds, and traffic overloading is alleviated by dynamically adjusting the CQI values reported by users, based on the downlink load as well as channel variations. The proposed algorithm is simulated and results show that the DDLC scheme improves the performance of both WCDMA and HSDPA systems in terms of outage probability, total system throughput, and radio resource utilization.

Publication
IEICE TRANSACTIONS on Communications Vol.E92-B No.6 pp.2327-2331
Publication Date
2009/06/01
Publicized
Online ISSN
1745-1345
DOI
10.1587/transcom.E92.B.2327
Type of Manuscript
LETTER
Category
Wireless Communication Technologies

Authors

Keyword