US 12,336,051 B2
Proximity services emergency call
Hannu Petri Hietalahti, Kiviniemi (FI); Mohamed Amin Nassar, Munich (DE); Ling Yu, Kauniainen (FI); and Vinh Van Phan, Oulu (FI)
Assigned to NOKIA TECHNOLOGIES OY, Espoo (FI)
Filed by NOKIA TECHNOLOGIES OY, Espoo (FI)
Filed on Nov. 26, 2024, as Appl. No. 18/960,523.
Application 18/960,523 is a continuation of application No. 18/850,423, previously published as PCT/EP2023/057346, filed on Mar. 22, 2023.
Claims priority of provisional application 63/324,488, filed on Mar. 28, 2022.
Prior Publication US 2025/0089128 A1, Mar. 13, 2025
Int. Cl. H04W 76/50 (2018.01); H04W 48/04 (2009.01); H04W 48/16 (2009.01)
CPC H04W 76/50 (2018.02) [H04W 48/04 (2013.01); H04W 48/16 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method, comprising:
sending a discovery request from a user equipment via a public land mobile network to a proximity services (ProSe) application server;
obtaining, by the user equipment from the ProSe application server, a code for emergency services;
in a relay discovery procedure, indicating, by the user equipment to the public land mobile network for access by a remote user equipment, a capability of the user equipment to support an emergency call, wherein the code for emergency services is included when indicating the capability;
receiving by the user equipment from the remote user equipment a request for an emergency call involving the remote user equipment that is to be relayed by the user equipment, wherein the request includes a code from the remote user equipment;
matching the code for emergency services with the code from the remote user equipment;
in response to the matching, sending, from the user equipment to the public land mobile network, the request including an emergency relaying indicator to cause at least one restriction applicable to a call from the remote user equipment to be overridden;
determining, by the user equipment, that the request is for the emergency call, wherein the request includes an indication that the request is for an emergency call; and
omitting, by the user equipment, at least one authentication process or mobility restriction for the remote user equipment based on the determination when setting up the emergency call.