US 12,225,502 B2
Method for co-ordination of paging in a user equipment
Volker Breuer, Boetzow (DE); Ly-Thanh Phan, Le Plessis Robinson (FR); and Benoît Jouffrey, Saint-Cyr-sur-Mer (FR)
Assigned to THALES DIS FRANCE SAS, Meudon (FR)
Appl. No. 17/777,316
Filed by THALES DIS FRANCE SAS, Meudon (FR)
PCT Filed Nov. 18, 2020, PCT No. PCT/EP2020/082459
§ 371(c)(1), (2) Date May 17, 2022,
PCT Pub. No. WO2021/099342, PCT Pub. Date May 27, 2021.
Claims priority of application No. 19306483 (EP), filed on Nov. 19, 2019.
Prior Publication US 2022/0408406 A1, Dec. 22, 2022
Int. Cl. H04W 68/02 (2009.01); H04W 88/06 (2009.01)
CPC H04W 68/02 (2013.01) [H04W 88/06 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method to operate a user equipment communicatively connected to at least two subscriber identity modules, which are at least assigned to a first and a cellular network, wherein the user equipment has assigned an independent paging identity in each of the first and second cellular networks for registration in said cellular networks,
the user equipment further being assigned to at least two paging groups, each of said paging group considering one of the at least two paging identities of the user equipment in said cellular networks, the method comprises the steps of:
determining a paging timing for the user equipment for at least one of said cellular networks based on the respective paging groups,
determining a value relating to a time difference between the first and second cellular network,
informing the first of the at least two cellular networks about the paging identity used in the second cellular network and the value relating to the time difference between said cellular networks,
retrieving an indication from said first cellular network relating to assignment to a paging group.