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:
May. 27, 2014
Filed:
Jun. 27, 2008
Hang Liu, Yardley, PA (US);
Ishan Mandrekar, Monmouth Junction, NJ (US);
Minquan Wu, Princeton Junction, NJ (US);
Ramkumar Perumanam, Edison, NJ (US);
Saurabh Mathur, Monmouth Junction, NJ (US);
Hang Liu, Yardley, PA (US);
Ishan Mandrekar, Monmouth Junction, NJ (US);
Minquan Wu, Princeton Junction, NJ (US);
Ramkumar Perumanam, Edison, NJ (US);
Saurabh Mathur, Monmouth Junction, NJ (US);
Thomson Licensing, Boulogne-Billancourt, FR;
Abstract
Message formats and apparatus are described that serve to reserve access to a communication medium in a multi-cast system. A first message, a multicast request-to-send message, includes a duration field having information representing the reserved time for a communication medium, a multicast receiver address field, a multicast transmitter address field, a field that identifies the number of slots for a clear-to-send response, and a field that identifies the number slots for a not-clear-to-send response. A second message includes a duration field, and a multicast receive address field. The second message has a format that can be used as one of a clear-to-send message in response to a multicast request-to-send message, a cancel-clear-to-send message that cancels a data transmission after the clear-to-send message is sent, and a not-clear-to-send message in response to the multicast request-to-send message.