US Patent No. 10,117,212

COORDINATION OF SIMULTANEOUS MULTI-RAT CAMPING


Patent No. 10,117,212
Issue Date October 30, 2018
Title Coordination Of Simultaneous Multi-rat Camping
Inventorship Icaro L. J. Da Silva, Solna (SE)
Gunnar Mildh, Sollentuna (SE)
Jose Luis Pradas, Stockholm (SE)
Assignee TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)

Claim of US Patent No. 10,117,212

1. A method in a wireless communication network, the wireless communication network providing radio access for a terminal device via at least a first and second type of wireless radio accesses operating with different radio access technologies (RATs), the method comprising:transmitting, by at least one network node, an indication regarding a set of camping areas (CAs), including a first set of camping areas associated with a first RAT and a second set of camping areas associated with a second RAT; wherein the first RAT is a priority RAT and the second RAT is a backup RAT;
performing, by the terminal device, camping in a coverage area defined based on the set of CAs;
updating, by the terminal device, the communication network with a geographic location of the terminal device:
a) when the terminal device enters a new coverage area being different from the coverage area defined by both the first and second set of CAs as a first mechanism; or
b) when the terminal device enters a new coverage area being different from the coverage area defined by one of the first and second set of CAs as a second mechanism;
wherein the updating the communication network with a geographic location of the terminal device is, as a third mechanism:
c) performed when the terminal device enters a new coverage area being different from the coverage area defined by the first set of camping areas, and
d) is not performed when the terminal device leaves the coverage area defined by the second set of camping areas but remains within the coverage area defined by the first set of camping areas.