Patent ID: 7668148
Filing Date: 2010-02-23
Classification: H04B,H04W

Abstract:
1. A method of allocating radio frequency carriers in a radio service area having a plurality of radio frequency time division multiple access (TDMA) carriers and frequency division multiple access (FDMA) carriers, such method comprising: receiving a call; when the received call is a FDMA call and a FDMA carrier is not available for the FDMA call, preempting a pre-existing call on a TDMA carrier of the plurality of radio frequency TDMA carriers for the FDMA call; or when the received call is a TDMA call and a TDMA slot is not available for the TDMA call, preempting a pre-existing FDMA call on a TDMA capable carrier of the plurality of radio frequency TDMA carriers for the TDMA call.