US 9,813,991 B2
Access and power management for centralized networks
Jin-Meng Ho, Plano, TX (US)
Assigned to TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US)
Filed by TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US)
Filed on Dec. 22, 2015, as Appl. No. 14/978,312.
Application 14/978,312 is a continuation of application No. 14/174,460, filed on Feb. 6, 2014, granted, now 9,258,783.
Application 14/174,460 is a continuation of application No. 12/697,105, filed on Jan. 29, 2010, granted, now 8,670,435, issued on Mar. 11, 2014.
Claims priority of provisional application 61/148,607, filed on Jan. 30, 2009.
Prior Publication US 2016/0112956 A1, Apr. 21, 2016
This patent is subject to a terminal disclaimer.
Int. Cl. H04L 12/28 (2006.01); H04W 52/02 (2009.01); H04W 74/06 (2009.01); H04W 48/16 (2009.01); H04W 72/04 (2009.01); H04J 1/16 (2006.01); H04W 74/00 (2009.01)
CPC H04W 52/0235 (2013.01) [H04W 48/16 (2013.01); H04W 52/0216 (2013.01); H04W 52/0248 (2013.01); H04W 72/042 (2013.01); H04W 72/0413 (2013.01); H04W 74/06 (2013.01); H04W 74/006 (2013.01); Y02B 60/50 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method of controlling communications between devices in a network, comprising:
receiving a beacon frame from a network hub during a beacon frame interval, the beacon frame identifying a beacon shift sequence and a current beacon period;
transmitting a connection request frame to the network hub, the connection request frame comprising a list of one or more scheduled allocation requests;
receiving a connection assignment frame from the network hub, the connection assignment designating one or more allocation intervals in a beacon period in response to the scheduled allocation requests; and
identifying wakeup intervals during times inside the designated allocation intervals and the beacon frame interval,
wherein the connection request frame further comprises a next wakeup field that identifies a sequence number of a beacon frame associated with a beacon period in which a node will wake up for frame reception and transmission and wherein the connection request frame further comprises a wakeup interval field that identifies a duration between a start of successive wakeups for a node sending the request.