Telecommunications – Radiotelephone system – Usage measurement
Reexamination Certificate
2000-08-18
2002-09-24
Trost, William (Department: 2683)
Telecommunications
Radiotelephone system
Usage measurement
C455S432300, C455S463000, C455S435100
Reexamination Certificate
active
06456839
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Technical Field
This invention relates to the field of providing neighborhood cordless services at a single rate such that there is no air time charge for calls made within a home neighborhood zone or subscribed-to visiting neighborhood zone(s), and, more particularly to a method of activating such services over-the-air without any need for service personnel assistance.
2. Description of the Related Arts
It is known to provide wireless services for a fixed fee and to charge additional air time fees for each period of time that a subscriber to the wireless services is using the radio frequency spectrum. Such services were initiated in the 1970's as analog wireless services and have become digital over time, for example, the relatively new digital personal communications services (DPCS).
It has been known up until recently to permit users to have cordless telephone apparatus comprising a base station and a mobile unit such that the mobile unit may communicate with the base station over limited distance of several hundred feet. Recently, in the United States, however, a band of frequencies has been made available in the 900 MHZ range for providing cordless telephone service where the mobile station can be as far removed from the base station portion of the station apparatus by as much as one mile under optimal conditions. Consequently, a user would not have to pay for air time charges as in wireless services such as personal communications services if a mobile station is confined within one mile radius of the typically home-located base station.
Fixed wireless subscriber loop services are also known. Equipment for providing such services is available from suppliers such as Diva Communications and OptoPhone Systems. The fixed wireless subscriber loop concept has been used successfully to provide telephone services to remote, for example, mountainous regions. To provide a copper wire subscriber loop to such customers can cost hundreds of thousands of dollars per subscriber. Subscribers to a fixed wireless subscriber loop system have an antenna mounted to their home or business and receive an equivalent of wired services over a wireless link to an antenna site, for example, on the top of the mountain. Service can be provided for a fixed rate, the copper subscriber wired loop eliminated and no air time charges are charged.
There is still a need in the art for a wireless service that would permit a mobile subscriber to roam within a zone close to their home in the same way as a 900 MHZ cordless customer is free to carry their cordless phone from room to room. A mobile subscriber should be able to roam and also move from one zone to another or make calls from non-contiguous zones without having to pay for air time charges. In today's cellular environment, airtime is charged. The current fee structure thus has very little incentive for customers to continue use their cellular phones when they have access to a home-based landline phone. In order to achieve the objectives of one phone, one number anytime and anywhere communications, it is imperative that a neighborhood or local ‘cordless type’ of services be provided to all the public cellular/PCS subscribers and with incentive to use the same PCS phone in the home/office and around the neighborhood area without air time charges. A subscriber should not lose a call in progress as they move from one subscribed-to zone to another adjacent subscribed zone, and should have the opportunity to switch automatically to known DPCS services and pay air time charges should they so choose. A subscriber to such services should be able to activate their service over-the-air from their subscriber to home neighborhood zone without having to obtain service personnel assistance.
SUMMARY OF THE PRESENT INVENTION
Subscribers to a local cordless service according to the present invention may subscribe to a home neighborhood zone and optionally one or more visiting neighborhood zones from which the subscribers may place telephone calls without having to pay air time charges. By local cordless service is intended a mobile wireless subscriber loop service wherein stations are mobile and the subscriber loop to the customers premises may be replaced with a wireless loop. The subscriber need not maintain their wired connection to a local exchange carrier (LEC). If the subscribers are current public digital PCS service users, they may use their existing cellular phone and unique mobile identification number (MIN) for subscription to the service. Subscribers may also have the option of electing new wireline numbers to be assigned to their cellular phone for subscription of the service and the numbers assigned may be the traditional PSTN directory number (DN). Alternatively, the subscribers can elect to port their existing wireline DNs to this service. If the subscriber is not a public cellular user, they will need a cellular phone or other mobile station (MS) assigned with either a new DN or their ported DN from the incumbent local exchange carrier (ILEC).
The subscriber buys their phone at a retail outlet and the retail outlet records the purchase in a service provider database. The point-of sale information may include subscriber name, address, credit card number, unique mobile station identification number (MIN), optional personal identification number (PIN) and other verification number. The user activates their service by activating their phone over-the-air when they first communicate from their selected home neighborhood zone. The system automatically verifies the user by comparing the point-of-sale information with the information input by the subscriber from their home neighborhood zone. Over-the-air activation occurs without the assistance of service personnel.
According to one embodiment of the present invention, a subscriber to such a mobile service pays a flat rate that is competitive with or even less expensive than a subscriber to conventional wired public switched telecommunications services. In their home zone, which may be approximately the same size as, or even slightly larger in size than, the range of a standard 900 MHZ cordless phone, the subscriber may carry or otherwise receive services at one flat rate (regardless of air time used). For additional flat fees, the subscriber may also make calls in one or more visited zones which may be contiguous with or remote from the home zone.
When a subscriber travels between the subscribed home zone and an adjacent visiting zone or between adjacent visiting zones, the call may be handed off to the other zone without interruption to the call in progress. Also, when a subscriber moves from any subscribed zone to a public cellular/PCS environment the call may be handed off without air time charges for the duration of the same call.
As a subscriber leaves their home zone and roams toward a remote (i.e., non-adjacent) visited zone, there exist at least three alternative ways of billing a call in progress. In one embodiment, the call in progress will be terminated when the boundaries of the subscribed-to zone are reached. In another embodiment, the call will be allowed to continue without air time charges for a predetermined period of time as a public cellular carrier (e.g., a conventional digital personal communications service call). In this invention the preferred method is to allow the call to continue but the subscriber will be switched over to public cellular carrier frequency without air-time charges for the duration of the same call
These and other features of the present invention will be understood from studying the drawings and the following detailed description of various embodiments.
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Chow Albert
Russell Jesse Eugene
Wang Spencer
Ying Wenchu
AT&T Corp.
Banner & Witcoff , Ltd.
Perez-Gutierrez Rafael
Trost William
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