US 11,889,387 B2
Communication apparatus, distribution apparatus, communication system, transmission method, and non-transitory computer readable medium
Naoaki Suzuki, Tokyo (JP); and Apostolos Papageorgiou, Heidelberg (DE)
Assigned to NEC CORPORATION, Tokyo (JP)
Appl. No. 16/969,769
Filed by NEC CORPORATION, Tokyo (JP)
PCT Filed Feb. 14, 2019, PCT No. PCT/JP2019/005440
§ 371(c)(1), (2) Date Aug. 13, 2020,
PCT Pub. No. WO2019/160061, PCT Pub. Date Aug. 22, 2019.
Claims priority of application No. 2018-025795 (JP), filed on Feb. 16, 2018.
Prior Publication US 2020/0413228 A1, Dec. 31, 2020
Int. Cl. H04W 4/06 (2009.01); H04W 4/90 (2018.01); H04W 64/00 (2009.01)
CPC H04W 4/06 (2013.01) [H04W 4/90 (2018.02); H04W 64/00 (2013.01)] 2 Claims
OG exemplary drawing
 
2. A communication system comprising:
an AMF (Access and Mobility Management Function) apparatus configured to manage access and mobility related to a UE (User Equipment); and
a CBC (Cell Broadcast Centre) configured to distribute emergency information, wherein the CBC sends a Write-Replace Warning Request message to the AMF apparatus, and
wherein the AMF connects to a 3GPP (3rd Generation Partnership Project) access network and an N3IWF (Non-3GPP InterWorking Function) node apparatus, and
wherein in a case where the Write-Replace Warning Request message does not include a list of TAIs (Tracking Area Identities), the AMF apparatus forwards the Write-Replace Warning Request message to an NG-RAN (Next Generation Radio Access Network) node apparatus indicated by information identifying a node apparatus of the 3GPP access network without forwarding the Write-Replace Warning Request message to the N3IWF node apparatus.