MOBILE-SYNCHRONIZED HANDOFF IN A WIRELESS COMMUNICATIONS SYSTEM

An arrangement for effecting call handoffs in a wireless communications system (FIG. 1) in a substantially glitchless manner. The arrangement relies on the mobile terminal (4) that is involved in a handoff to trigger the handoff by transmitting a handoff coordination signal simultaneously to the base stations (l, 2) that are involved in the handoff. The base stations receive the signal substantially simultaneously, and in response the base station that has been serving the mobile terminal's call ceases to do so while the base station that is henceforth to serve the mobile terminal's call commences to do so at the same instant in time. Un dispositif permettant d'effectuer des transferts d'appels dans un système de communication sans fil (FIG. 1) d'une manière sensiblement sans perturbation. Le dispositif repose sur le terminal mobile (4) qui est impliqué dans un transfert pour déclencher le transfert en émettant un signal de coordination de transfert simultanément aux stations de base (1, 2) qui sont impliquées dans le transfert. Les stations de base reçoivent le signal sensiblement en même temps, et, en réponse, la station de base qui servait l'appel du terminal mobile cesse de le faire tandis que la station de base qui doit désormais servir l'appel du terminal mobile commence à le faire au même moment.