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:
Apr. 19, 2005
Filed:
May. 09, 2003
Rajendra A. Panchal, Algonquin, IL (US);
Jay Jayapalan, Buffalo Grove, IL (US);
Alexander Rozenstrauch, Buffalo Grove, IL (US);
Rajendra A. Panchal, Algonquin, IL (US);
Jay Jayapalan, Buffalo Grove, IL (US);
Alexander Rozenstrauch, Buffalo Grove, IL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
To address the need to provide listening participants of CDMA dispatch services soft handoff signaling capability, the concept of 'shared channel signaling windows' for shared traffic channels (e.g.,) is described. In one embodiment, the base site () announces the beginning of a signaling window for the traffic channel, allowing remote units (e.g., MS) that need to send handoff signaling an opportunity. In response to such signaling, the base site directs soft handoff information to the signaling remote units via the traffic channel. However, all the remote units that share the traffic channel can store this soft handoff information and later use the information to initiate soft handoffs without needing to exchange handoff messaging with the base site. Thus, a CDMA-dispatch, shared-channel implementation is enabled by providing soft handoff signaling windows and the over-the-air, soft-handoff messaging required for dispatch services is reduced.