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:
Feb. 17, 2015
Filed:
Oct. 20, 2009
Krishnakant M. Patel, Richardson, TX (US);
Ravi Ayyasamy, Richardson, TX (US);
Gorachand Kundu, Bangalore, IN;
Basem A. Ardah, Plano, TX (US);
Anand Narayanan, Plano, TX (US);
Brahmananda R. Vempati, Dallas, TX (US);
Pratap Chandana, Plano, TX (US);
Krishnakant M. Patel, Richardson, TX (US);
Ravi Ayyasamy, Richardson, TX (US);
Gorachand Kundu, Bangalore, IN;
Basem A. Ardah, Plano, TX (US);
Anand Narayanan, Plano, TX (US);
Brahmananda R. Vempati, Dallas, TX (US);
Pratap Chandana, Plano, TX (US);
Kodiak Networks, Inc., San Ramon, CA (US);
Abstract
A Hybrid Push-to-Talk (PTT) function for use in wireless communications networks, such as cellular mobile telephone networks. The cellular mobile telephone network includes a Real-Time Exchange (RTX) that interfaces to at least one Mobile Switching Center (MSC) in the cellular mobile telephone network to provide instant two-way half-duplex voice messaging within a group of users. In the Hybrid PTT function, first or initial talkbursts or volleys are transmitted by the RTX from an originating mobile to terminating mobiles on pre-established Internet Protocol (IP) sessions between the RTX and the mobiles. In addition, circuit channels are established by the RTX with the mobiles through the MSC in parallel with the first talkburst or volley. Thereafter, second or subsequent talkbursts or volleys are transmitted by the RTX from the originating mobile to the terminating mobiles on the circuit channels.