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:
Oct. 23, 2001
Filed:
Mar. 24, 2000
Shaowei Pan, Lake Zurich, IL (US);
Rich Comroe, South Barrington, IL (US);
Bruce A. Oltman, Schaumburg, IL (US);
Shmuel Silverman, Buffalo Grove, IL (US);
Mark O'Beirne, Lake Barrington, IL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
In a wireless code-division multiple access (CDMA) system (,), a talkgroup (,) of subscriber units is provided. A sub-talkgroup (,) of subscriber units, forming a part of the talkgroup is assigned at least one inbound channel (,). The talkgroup is assigned outbound channels (,). Members of the sub-talkgroup may simultaneously transmit voice information (,) using the at least one inbound channel, which voice information is summed (,) and re-transmitted to the talkgroup using the outbound channels. Voice information is summed so that an individual talker receives summed voice information without the individual subscriber's voice content. Subscriber units in the sub-listengroup are allowed to transmit voice information only after requesting, and receiving, an additional inbound channel.