US Patent No. 10,560,893

COMMUNICATIONS SYSTEM, AN ACCESS NETWORK NODE AND A METHOD OF OPTIMIZING ENERGY CONSUMED IN A COMMUNICATION NETWORK


Patent No. 10,560,893
Issue Date February 11, 2020
Title Communications System, An Access Network Node And A Method Of Optimizing Energy Consumed In A Communication Network
Inventorship Chih-Kuang Lin, Boulogne-Billancourt (FR)
Vijay Venkateswaran, Boulogne-Billancourt (FR)
Assignee ALCATEL LUCENT, Boulogne-Billancourt (FR)

Claim of US Patent No. 10,560,893

1. A method of optimising energy consumed in a communications network comprising a plurality of resource limited nodes and an access network node, the method comprising:estimating and dynamically updating a belief on a network condition for a resource limited node of the plurality of resource limited nodes based on network observations and a history profile of the network observations by calculating a probability according to a two-player dynamic Bayesian game in which a first player, i, represents an overall sensing phenomenon and a second player, j, represents the plurality of resource limited nodes in which a posterior belief of player j's belief on player i's type being critical is:
where Hi(t) is a history profile of player i up to a game stage t, OAi(t) is an observed action of player i at a game stage t, and PTi is a private type of player i, the private type of player i being either critical or normal, PTi is a set of all possible private types of player i;determining whether a severity of the updated belief in the network condition is indicative that a change in sleep duty cycle of the resource limited node is required;
determining whether a correlation between the resource limited nodes within the plurality of resource limited nodes is indicative that a change in sleep duty cycle of the resource limited node is required; and
updating the sleep duty cycle of the resource limited node to optimize an overall energy consumed in the resource limited nodes when the severity of the updated belief in the network condition as well as the correlations between resource limited nodes indicates that a change in sleep duty cycle of the resource limited node is required.