US 9,814,069 B2
Channel reservation in flexible wireless networks
Dave Alberto Tavares Cavalcanti, Ossining, NY (US); and Jianfeng Wang, Ossining, NY (US)
Assigned to KONINKLIJKE PHILIPS N.V., Eindhoven (NL)
Appl. No. 13/141,524
Filed by Dave Alberto Tavares Cavalcanti, Ossining, NY (US); and Jianfeng Wang, Ossining, NY (US)
PCT Filed Dec. 2, 2009, PCT No. PCT/IB2009/055468
§ 371(c)(1), (2), (4) Date Jun. 22, 2011,
PCT Pub. No. WO2010/073158, PCT Pub. Date Jul. 1, 2010.
Claims priority of provisional application 61/140,097, filed on Dec. 23, 2008.
Prior Publication US 2011/0261793 A1, Oct. 27, 2011
Int. Cl. H04W 4/00 (2009.01); H04W 74/04 (2009.01); H04W 72/04 (2009.01); H04W 74/02 (2009.01); H04W 84/18 (2009.01); H04W 88/18 (2009.01)
CPC H04W 74/04 (2013.01) [H04W 72/04 (2013.01); H04W 74/02 (2013.01); H04W 84/18 (2013.01); H04W 88/182 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method for reserving channel access time slots in a wireless network, comprising:
employing a flexible medium access control (Flex-MAC) protocol;
determining at least a type and a mode of the channel reservation based on whether the wireless network is operating under a centralized mode of resource allocation or a distributed mode of resource allocation, both the centralized and distributed modes of resource allocation being supported by the Flex-MAC protocol, which enables a transition between the centralized mode and the distributed mode while maintaining ongoing connections;
generating a reservation request frame based on the determined type and mode of the channel reservation;
sending the reservation request frame to a reservation proxy device;
in response to the reservation request frame, receiving a reservation response frame from the reservation proxy device; and
announcing usage of an allocated time slot if a channel reservation request is confirmed in the reservation response frame,
wherein the mode of the channel reservation is either implicit reservation or explicit reservation;
wherein when the mode of the channel reservation is implicit reservation, the reservation request frame is sent during a beacon period; and
wherein when the mode of the channel reservation is explicit reservation, the reservation request frame is sent during a signaling window.