Improvement in the priority handoff scheme for multi-service cellular mobile communication systems
Cao Da · Journal of the China Railway Society · 2003
Service handoff is the key technique in achieving more efficient use of the finite spectrums allocated to the mobile communication system. In this paper, it is introduced a new handoff scheme, the dual-queue FIFO algorithm based on HCA (Hybrid Channel Assignment) for data and voice call services. Queue lengths Nh and No are assigned respectively to handoff voice calls and initial voice calls and data calls, both queues following the FIFO discipline. At the same time, the adaptive number of Cr channels are reserved for handoff voice calls. It can be seen through comparison with the single FIFO queuing scheme and the HCA-based single FIFO queuing scheme that the service handoff priority scheme improves the system performance and better suits the needs of intense communication.