US 12,192,780 B2
Enhanced network availability for private enterprise networks in shared spectrum systems
Stephan Litjens, Helsinki (FI); Mohammad Riaz Khawer, Murray Hill, NJ (US); and Milind M. Buddhikot, Murray Hill, NJ (US)
Assigned to NOKIA SOLUTIONS AND NETWORKS OY, Espoo (FI)
Appl. No. 17/596,759
Filed by Nokia Solutions and Networks Oy, Espoo (FI)
PCT Filed Jun. 18, 2019, PCT No. PCT/US2019/037745
§ 371(c)(1), (2) Date Dec. 17, 2021,
PCT Pub. No. WO2020/256706, PCT Pub. Date Dec. 24, 2020.
Prior Publication US 2022/0303782 A1, Sep. 22, 2022
Int. Cl. H04W 16/14 (2009.01); H04W 24/02 (2009.01); H04W 84/04 (2009.01)
CPC H04W 16/14 (2013.01) [H04W 24/02 (2013.01); H04W 84/045 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An apparatus comprising:
at least one processor; and
at least one memory including instructions which, when executed by the at least one processor, cause the apparatus at least to:
aggregate, at a domain proxy, traffic for Citizens Broadband radio Service Devices (CBSDs) in a private enterprise network;
instantiate, at the domain proxy, a local spectrum access system (SAS);
monitor, at the domain proxy, communication with geo-redundant instances of the SAS that allocate frequency bands in a shared spectrum to the CBSDs;
switch over, at the domain proxy, from the geo-redundant instances of the SAS to the local SAS in response to the geo-redundant instances of the SAS becoming unavailable; and
respond, from the local SAS, to heartbeat messages from the CBSDs.