US 12,114,260 B2
Method for detecting the reachability of a terminal in a communication network
Antoine Mouquet, Chatillon (FR); and Jean-Baptiste Gardel, Chatillon (FR)
Assigned to ORANGE, Issy-les-Moulineaux (FR)
Appl. No. 17/642,076
Filed by Orange, Issy-les-Moulineaux (FR)
PCT Filed Sep. 4, 2020, PCT No. PCT/FR2020/051532
§ 371(c)(1), (2) Date Mar. 10, 2022,
PCT Pub. No. WO2021/048487, PCT Pub. Date Mar. 18, 2021.
Claims priority of application No. 1909922 (FR), filed on Sep. 10, 2019.
Prior Publication US 2023/0077257 A1, Mar. 9, 2023
Int. Cl. H04W 52/00 (2009.01); H04W 28/18 (2009.01); H04W 52/02 (2009.01); H04W 76/28 (2018.01)
CPC H04W 52/0216 (2013.01) [H04W 28/18 (2013.01); H04W 76/28 (2018.02)] 12 Claims
OG exemplary drawing
 
1. A method comprising:
detecting the reachability of a terminal previously served by a first access device of a registration area of a communication network, wherein the first access device is unable to manage sleep and waking periods of said terminal, then served by a second device of said registration area, wherein the second device is able to manage said periods, said detecting being implemented by a management entity of said network, wherein the management entity has not been informed of a change of access device and gets information indicating that the terminal is being served by the first access device, and wherein the detecting comprises:
exchanging messages with the terminal for registration and negotiation of the sleep and waking periods of the terminal,
obtaining an item of information relating to data to be transmitted to the terminal, and
sending a contact-establishment request message to said terminal during a determined waking period of said terminal.