| US 7,474,895 B1 | ||
| Frequency reuse in wireless communication networks | ||
| James Jiang, Richardson, Tex. (US); YanWei Wu, Shenzhen (China); Yonggang Fang, San Diego, Calif. (US); HeXing Liu, Shenzhen (China); and Jun Han, San Diego, Calif. (US) | ||
| Assigned to ZTE (USA) Inc., Iselin, N.J. (US) | ||
| Filed on Mar. 04, 2005, as Appl. No. 11/73,427. | ||
| Claims priority of provisional application 60/550652, filed on Mar. 04, 2004. | ||
| Claims priority of provisional application 60/556995, filed on Mar. 25, 2004. | ||
| Int. Cl. H04Q 7/20 (2006.01) | ||
| U.S. Cl. 455—447 [455/452.1; 455/509; 455/436] | 18 Claims |
| 1. A method for frequency reuse in a wireless communication system, comprising:
allocating available frequency channels at different channel frequencies for a base station into a nonreusable frequency pool
for channel frequencies designated for use by the base station only, a reusable frequency pool for channel frequencies that
can be used by the base station and neighboring base stations, and an unallocated frequency pool for channel frequencies that
are not allocated to the nonreusable and the reusable frequency pool;
allocating a channel frequency from either the reusable frequency pool or the unallocated frequency pool to a wireless subscriber
station in communication with the base station when the wireless subscriber station is in a non-hand-off zone to communicate
with the base station only; and
allocating a channel frequency from the nonreusable frequency pool for the base station to a wireless subscriber station in
communication with the base station when the wireless subscriber station is in a hand-off zone to communicate with the base
station and at least one neighboring base station.
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