Neighborhood cordless service call handoff

• US 7,805,141 B1
• Filed: 04/19/2007
• Issued: 09/28/2010
• Est. Priority Date: 12/30/1998
• Status: Expired due to Fees

• Current Assignee: AT&T Intellectual Property I LP (AT&T, Inc.)
• Original Assignee: AT&T Intellectual Property I LP (AT&T, Inc.)
• Inventors: Ying, Wenchu, Kim, Jinman, Chow, Albert, Wang, Spencer
• Primary Examiner(s): Ly; Nghi H
• Application Number:
  US11/788,151
• Time in Patent Office: 1,258 Days
• Field of Search: 455/436, 455/442, 455/432.1, 455/405, 455/406, 370/331
• US Class Current: 455/436
• CPC Class Codes: H04W 36/00835 Determination of neighbour cell lists
• CPC Class Codes: H04W 84/16 WPBX [Wireless Private Branch Exchange]

Abstract

A method and apparatus for providing telephone call hand offs between a local cordless service and a different wireless cellular service such as a macro-cellular service. The local cordless service may be configured such that a mobile telephone equipped subscriber may place or receive calls for a fixed rate, for example, per month without having to pay radio frequency air time charges any time they are located within their selected subscribed-to zones. If the subscribed-to zones are adjacent to one another and the mobile subscriber roams from one zone to another, the subscriber may continue their free call uninterrupted and without paying air time charges. However, when the subscriber roams outside their subscribed-to zones they may be switched from the present local cordless services to conventional personal communications services and pay air time charges. However for an active call, no air-time charges are incurred as the user transitions between the cellular/DPCS environment and the local cordless service environment. Associated apparatus comprises an IBS for automatically changing radio frequency channels as the subscriber roams within a subscribed-to neighborhood zone, roams to another subscribed-to zone or roams outside a subscribed-to zone. Subscribers may choose to use their mobile identification number, their current directory telephone number for wired public switched telephone service or obtain a new directory number.

Claims

1. A method comprising:

providing local cordless service to a mobile station operating within a subscribed-to home neighborhood zone;

billing said local cordless service within said subscribed-to home neighborhood zone at a fixed billing rate for unlimited airtime;

handing off service from said local cordless service to a public cellular service when said mobile station moves outside said subscribed-to home neighborhood zone, wherein said public cellular service is billed at a non-fixed billing rate based on airtime;

handing off service from said public cellular service to said local cordless service when said mobile station moves into a first subscribed-to visiting neighborhood zone wherein said fixed billing rate includes unlimited airtime within said first subscribed-to visiting neighborhood zone; and

handing off service to a second subscribed-to visiting neighborhood zone when said mobile station is not in said first subscribed-to visiting neighborhood zone and said mobile station is not in said subscribed-to home neighborhood zone, wherein said second subscribed-to visiting neighborhood zone is billed at rate different than said fixed billing rate.

2. The method of claim 1 further comprising:

handing off service from said public cellular service to said local cordless service when said mobile station returns to said subscribed-to home neighborhood zone.

3. A method comprising:

providing local cordless service to a mobile station operating within a subscribed-to home neighborhood zone;

providing local cordless service to said mobile station when said mobile station moves outside said subscribed-to home neighborhood zone to a first subscribed-to visiting neighborhood zone;

providing local cordless service to said mobile station when said mobile station moves outside said subscribed-to home neighborhood zone and said first subscribed-to visiting neighborhood zone to a second subscribed to visiting neighborhood zone;

billing said local cordless service at a fixed billing rate for unlimited airtime within said subscribed-to home neighborhood zone and said first subscribed-to visiting neighborhood zone; and

billing local cordless service provided to a mobile station in a second subscribed-to visiting neighborhood zone at a rate different than the fixed billing rate.

4. The method of claim 3 further comprising:

handing off service from said local cordless service to a public cellular service when said mobile station moves outside said first subscribed-to visiting neighborhood zone, and said second subscribed-to visiting neighborhood zone.

5. The method of claim 4 wherein said public cellular service is billed at a non-fixed billing rate based on airtime.

6. The method of claim 4 wherein said fixed billing rate includes unlimited airtime for said public cellular service.

7. The method of claim 3 further comprising:

terminating service to said mobile station if said mobile station moves outside said subscribed-to home neighborhood zone, said first subscribed-to visiting neighborhood zone, and said second subscribed-to visiting neighborhood zone.