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:
Jun. 11, 2013
Filed:
Jun. 30, 2008
Hang Liu, Yardley, PA (US);
Ishan Mandrekar, Monmouth Junction, NJ (US);
Mingquan Wu, Monmouth Junction, NJ (US);
Ramkumar Perumanam, Carmel, NJ (US);
Saurabh Mathur, Monmouth Junction, NJ (US);
Hang Liu, Yardley, PA (US);
Ishan Mandrekar, Monmouth Junction, NJ (US);
Mingquan Wu, Monmouth Junction, NJ (US);
Ramkumar Perumanam, Carmel, NJ (US);
Saurabh Mathur, Monmouth Junction, NJ (US);
Thomson Licensing, Boulogne-Billancourt, FR;
Abstract
Message formats and apparatus are described that reserve access to a communication medium in a multicast system. A first message, a multicast request-to-send message, includes a duration field having information representing the reserved time for a communication medium, multicast receiver and transmitter address fields, and bits that specifies a destination that is expected to reply to the multicast digital message. The bits that specify a destination can be extended to a plurality of fields that each contain different destination identifiers. Example destination identifiers include association identifiers or media access control addresses. Alternately, the bits that specify a destination can have a first field containing an offset and a second field indicating destinations with respect to the offset. A second message includes a duration field and multicast receiver and transmitter address fields. The second message is used to cancel a data transmission resulting from a multicast request-to-send message.