US 10,368,297 B2
Methods, systems and computer program products for network-controlled selection of radio access networks
Christofer Lindheimer, Linköping (SE); Gunnar Mildh, Sollentuna (SE); Håkan Persson, Solna (SE); Stefan Rommer, Västra Frölunda (SE); Ivo Sedlacek, Hovorcovice (CZ); and Oumer Teyeb, Solna (SE)
Assigned to TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)
Appl. No. 14/892,377
Filed by TELEFONAKTIEBOLAGET L M ERICSSON (PUBL), Stockholm (SE)
PCT Filed Jan. 15, 2014, PCT No. PCT/SE2014/050035
§ 371(c)(1), (2) Date Nov. 19, 2015,
PCT Pub. No. WO2014/189428, PCT Pub. Date Nov. 27, 2014.
Claims priority of provisional application 61/825,388, filed on May 20, 2013.
Prior Publication US 2016/0095050 A1, Mar. 31, 2016
Int. Cl. H04W 48/14 (2009.01); H04W 48/16 (2009.01); H04W 48/18 (2009.01); H04W 48/06 (2009.01); H04W 88/06 (2009.01)
CPC H04W 48/14 (2013.01) [H04W 48/06 (2013.01); H04W 48/16 (2013.01); H04W 48/18 (2013.01); H04W 88/06 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method of operating a wireless communication device (WCD) to facilitate selection among a set of two or more radio access networks (RANs), each of which can provide data access to the WCD, the wireless communication device being served by one of the RANs in the set, the method comprising:
receiving, at the WCD, a network selection policy;
evaluating, by the WCD, the network selection policy, wherein evaluating the network selection policy comprises the WCD using the network selection policy to make a policy evaluation, wherein using the network selection policy to make the policy evaluation comprises the WCD selecting, based on the network selection policy, a single particular RAN from said set of RANs that can provide data access to the WCD, wherein selecting a single particular RAN based on the network selection policy comprises selecting a single particular RAN based on at least one or more of: the current time of day, the current location of the WCD, a signal strength threshold, a signal quality threshold, and load information indicating load at each RAN in the set of RANs; and
before attempting to access the single particular RAN selected from said set of RANs that can provide data access to the WCD based on the network selection policy:
the WCD transmitting to the RAN serving the WCD a message pertaining to the policy evaluation, said message comprising information identifying the single particular RAN selected from said set of RANs that can provide data access to the WCD based on the network selection policy, wherein the message pertaining to the policy evaluation further comprises one or more of: a signal strength of each RAN in said set of RANs, a signal quality of each RAN in said set of RANs, and the load information indicating load at each RAN in the set of RANs;
the WCD receiving a response to the message, wherein
the response indicates whether the WCD's policy evaluation has been rejected, and
the network selection policy is an Access Network Discovery and Selection Function (ANDSF) policy; and
the WCD receiving a message from the RAN serving the WCD, the message requesting information about one or more of the set of RANs and indicating a criterion on when to perform the step of evaluating.