Title:
SYSTEM AND METHOD FOR PUSH-TO-TALK COMMUNICATION IN AN ORTHOGONAL FREQUENCY DIVISION MULTIPLEXED COMMUNICATION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2010/090955
Kind Code:
A3
Abstract:
A system to permit push-to-talk communications in an orthogonal frequency division multiplexed (OFDM) communication network. Individual wireless communication devices that are part of a Group Call are assigned the same set or sets of OFDM tones for a downlink timeslot. Because each wireless communication device receives the same set of tones, each device will receive a communication simultaneously. The assigned OFDM tones need not be contiguous within a block of available tones. Because a large number of OFDM tones are available, the concept may be extended to a large number of groups that each separately support a Group Call function.
Inventors:
MECHALEY JR ROBERT G (US)
Application Number:
PCT/US2010/022587
Publication Date:
November 25, 2010
Filing Date:
January 29, 2010
Export Citation:
Assignee:
EAGLE RIVER HOLDINGS LLC (US)
MECHALEY JR ROBERT G (US)
MECHALEY JR ROBERT G (US)
International Classes:
H04L27/26; H04W4/10
Foreign References:
| US20090016311A1 | 2009-01-15 | |||
| US20080165866A1 | 2008-07-10 | |||
| US20080200198A1 | 2008-08-21 |
Other References:
See also references of EP 2394407A4
Attorney, Agent or Firm:
DONOHUE, Michael J. et al. (Suite 2200Seattle, Washington, US)
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