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:
Jan. 28, 2014
Filed:
Mar. 28, 2013
Sprint Spectrum L.p., Overland Park, KS (US);
Tong Zhou, Lower Gwynedd, PA (US);
Ronald E. Lewis, Independence, MO (US);
Sprint Spectrum L.P., Overland Park, KS (US);
Abstract
An originating mobile station seeks to establish a push-to-talk (PTT) communication session with a destination mobile station. To do this, the originating mobile station transmits a first request message that requests the PTT session. Before receiving a predefined indication that the requested PTT session has been accepted, the originating mobile station transmits a first continuation message that includes first session description information to facilitate establishment of the PTT session. A PTT server receives the first request message and, before receiving the first continuation message, transmits to the destination mobile station a second request message that requests the PTT session. The PTT server then transmits a second continuation message that includes second session description information. The destination mobile station receives the second request message and, before receiving the second continuation message, transmits an acceptance message indicating acceptance of the requested PTT session.