The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 14, 1999
Filed:
Apr. 29, 1997
Paul E Bender, San Diego, CA (US);
Toni L Holcman, San Diego, CA (US);
Gadi Karmi, San Diego, CA (US);
Kuo-Chun Lee, San Diego, CA (US);
Suzanne M Lueder, San Diego, CA (US);
Bibhu P Mohanty, San Diego, CA (US);
Robert C Ottinger, Encinitas, CA (US);
Roy F Quick, Jr, San Diego, CA (US);
Steven P Stachwick, Ramona, CA (US);
Todd Sutton, San Diego, CA (US);
Venkat Tangirala, San Diego, CA (US);
Noam A Ziv, San Diego, CA (US);
Qualcomm Incorporated, San Diego, CA (US);
Abstract
A method and apparatus for operating a cellular telephone system that supports performing an inter-system soft handoff is described. A subscriber unit generates a pilot strength measurement report when the pilot channel from a base station is detected. When a base station controller receiving the pilot strength measurement report determines that the base station is part of a second cellular telephone system, a inter-system soft handoff request is generated. An admission control subsystem receives the inter-system soft handoff and either grants or denies the request base on the traffic level with the second cellular telephone system. In a preferred embodiment of the invention, the traffic level is determined based on link load messages received periodically by the admission control subsystem that are generated by an interface port coupled to an interconnect between the first cellular telephone system and the second cellular telephone system. The link load message include peak queue length and average frame rate information.