US 9,813,942 B2
Inter-rat systems access network (AN) load balance and congestion control mechanism
Ke-Chi Jang, Plano, TX (US)
Assigned to Telefonaktiebolaget LM Ericsson(publ), Stockholm (SE)
Filed by TELEFONAKTIEBOLAGET L M ERICSSON (PUBL), Stockholm (SE)
Filed on Feb. 8, 2016, as Appl. No. 15/17,935.
Application 15/017,935 is a division of application No. 14/031,633, filed on Sep. 19, 2013, granted, now 9,288,717.
Claims priority of provisional application 61/757,814, filed on Jan. 29, 2013.
Prior Publication US 2016/0174104 A1, Jun. 16, 2016
Int. Cl. H04W 28/08 (2009.01); H04W 48/06 (2009.01); H04W 36/14 (2009.01); H04W 88/06 (2009.01)
CPC H04W 28/08 (2013.01) [H04W 48/06 (2013.01); H04W 36/14 (2013.01); H04W 88/06 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A method for providing inter-Radio Access Technology (RAT) load-balancing and congestion control when a wireless device attempts to attach to a primary RAT while receiving wireless communication over a secondary RAT that is different from the primary RAT, the method comprising performing the following steps using a network entity in a Radio Access Network (RAN) supporting the secondary RAT:
broadcasting a congestion indicator via a broadcast message to all wireless devices receiving wireless communication over the secondary RAT, wherein the wireless devices include:
a set of idle wireless devices, wherein each idle wireless device has no traffic channel established over the secondary RAT, and
a set of active wireless devices, wherein each active wireless device has a traffic channel established over the secondary RAT; and
through the congestion indicator, disabling a primary RAT re-selection functionality in each idle wireless device receiving the broadcast message, thereby preventing re-selection of the primary RAT by the idle wireless devices.