| US 7,613,148 B2 | ||
| Method and apparatus for performing fast handover through fast ranging in a broadband wireless communication system | ||
| Seung-Eun Hong, Suwon-si (Korea, Republic of); Bong-Gee Song, Seongnam-si (Korea, Republic of); Kwang-Seop Eom, Seongnam-si (Korea, Republic of); Min-Hee Cho, Anyang-si (Korea, Republic of); and Hyeong-Jong Ju, Seoul (Korea, Republic of) | ||
| Assigned to Samsung Electronics Co., Ltd, (Korea, Republic of) | ||
| Filed on Feb. 14, 2005, as Appl. No. 11/57,887. | ||
| Claims priority of application No. 10-2004-0009517 (KR), filed on Feb. 13, 2004. | ||
| Prior Publication US 2005/0192011 A1, Sep. 01, 2005 | ||
| Int. Cl. H04Q 7/00 (2006.01) | ||
| U.S. Cl. 370—331 [370/338; 455/439] | 19 Claims |
| 1. A method for performing a handover by a subscriber station (SS) in a broadband wireless communication system including
a serving base station (BS) communicating with the SS, and at least one neighbor BS neighboring the serving BS, the method
comprising the steps of:
receiving downlink signals from the serving BS and the neighbor BS;
measuring an arrival time difference between the downlink signal received from the serving BS and the downlink signal received
from the neighbor BS;
transmitting a handover request message including the measured arrival time difference to the serving BS; and
receiving fast ranging information from the neighbor BS through a message in which the arrival time difference is reflected.
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