H - Electricity – 04 – M
Patent
H - Electricity
04
M
H04M 1/2745 (2006.01) H04M 1/725 (2006.01) H04M 1/57 (2006.01) H04Q 7/22 (2006.01) H04Q 7/32 (2006.01) H04Q 7/36 (2006.01) H04Q 7/38 (2006.01) H04Q 7/20 (2006.01)
Patent
CA 2182586
A multiple mode, personal, wireless communications system is provided herein which exists within a radiotelephone network serving general customers and provides additional services to a select group of customers. In one embodiment, the system uses handsets which automatically switch between a standard cellular radiotelephone mode of operation and an enhanced cordless mode when the handsets are within range of pico cells that are interconnected to the public switched telephone network. Each pico cell is controlled via a framework of overlay cells that operates independently of the radiotelephone network and uses a unique control protocol on a small number of reserved cellular channels. Each pico cell consists of a spectrally-dynamic, non capturing, frequency-agile, multi- purpose base station which is provided at customer-selected locations to cooperate with the overlay cell framework. Each pico cell is capable of supporting multiple handsets and uses low power operation that achieves limited coverage, and reduces traffic on the standard cellular radiotelephone network by independently handling registered handsets. An alternate line option module provides wireless local interconnect capability to selectively route call traffic between land lines and the standard cellular radiotelephone network. Service control units and host stations facilitate wireless activation and control of each pico cell and handset via the overlay cell framework. The multiple mode telecommunication system may further include a portable handset with a single transceiver which is capable of operating in accordance both with a first wireless control protocol and with a second wireless control protocol. The first wireless control protocol has a post-activation registration session which is initiated by the handset transmitting a reverse channel message without receiving a corresponding forward channel message. The second wireless control protocol has a post- activation registration session which is initiated by the handset transmitting a reverse channel message after receiving a corresponding forward channel message stream. A local base station includes a transceiver which is capable of exchanging communications with the handset in accordance with the first wireless control protocol when the handset is within a local range of the local base station. Switching means are coupled to the handset transceiver, for automatically setting the handset transceiver to engage in communications with a land station under the second wireless control protocol when the handset is moved beyond range of the local base station.
Un système de transmission personnel sans fil, à plusieurs modes, est compris dans un réseau radiotéléphonique desservant des abonnés en général et fournit des services supplémentaires à un groupe restreint d'abonnés. Ce système fait appel à des combinés (32) qui commutent automatiquement entre un mode dans lequel ils fonctionnent comme radiotéléphones cellulaires standards (1901) et un mode dans lequel ils fonctionnent comme téléphones sans fil améliorés (1420) lorsque les combinés (32) se trouvent dans le champ de picocellules (26) interconnectées au réseau téléphonique public commuté (20). Chaque picocellule est commandée par l'intermédiaire d'une structure de cellules de recouvrement (10b) qui fonctionne indépendamment du réseau radiotéléphonique et fait appel à un protocole de commande unique sur un petit nombre de voies cellulaires réservées. Chaque picocellule comprend un poste fixe polyvalent agile en fréquence, sans accrochage et à spectre dynamique (26), prévu au niveau d'emplacements choisis par l'utilisateur afin de coopérer avec la structure de cellules de recouvrement. Chaque picocellule est capable de prendre en charge plusieurs combinés (32) et de présenter un fonctionnement à faible consommation qui permet une couverture limitée. Ces cellules permettent également de réduire le trafic sur le réseau radiotéléphonique cellulaire standard en gérant indépendamment les combinés enregistrés (32). Un module (22) à option de ligne de détournement confère au système une aptitude d'interconnexion locale sans fil permettant d'acheminer sélectivement le trafic d'appels entre des lignes terrestres (24) et le réseau radiotéléphonique cellulaire standard. Des unités de commande de service (12) et des postes hôtes (17) facilitent la commande et l'activation sans fil de chaque picocellule et de chaque combiné (32) par l'intermédiaire de la structure de cellules de recouvrement.
Dion John K.
Zicker Robert G.
Borden Ladner Gervais Llp
Gte Mobile Communications Service Corporation
Gte Wireless Service Corporation
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