| Article ID: | iaor20097481 |
| Country: | South Korea |
| Volume: | 34 |
| Issue: | 4 |
| Start Page Number: | 445 |
| End Page Number: | 459 |
| Publication Date: | Dec 2008 |
| Journal: | Journal of the Korean Institute of Industrial Engineers |
| Authors: | Paik Chunhyun |
| Keywords: | service |
This paper addresses a call admission control (CAC) scheme giving handoff calls a priority over new calls for OFDMA wireless communication systems. The characteristics of OFDMA system and a variety of user QoS (Quality of Service) requirements are incorporated into the proposed CAC scheme which consists of several optimization modules for the system resource (subcarriers and power) allocations. The mathematical models and its solution methods for the embedded resource allocation problems are proposed. Some extensive computational experiments are conducted to illustrate the superiority of our CAC.