EP-4742826-A2 - PROXIMITY SERVICES EMERGENCY CALL

Abstract

Systems, methods, apparatuses, and computer program products for emergency sessions, such as emergency calls, sending a discovery request to a network; and obtaining a first code from the network. Indicating, in a relay discovery procedure, a capability of the relay user equipment to support an emergency call, wherein the indication of the need of the remote user equipment comprises a second code. Upon determining that the first code and the second code are matching, indicating the capability of the relay user equipment to support an emergency call, wherein the first code is included when indicating the capability. Receiving from the remote user equipment a request for an emergency call to be relayed to the remote user equipment by the relay user equipment and sending to the network, the request including an emergency relaying indicator.

Inventors

• HIETALAHTI, HANNU PETRI
• NASSAR, MOHAMED AMIN
• YU, LING
• VAN PHAN, VINH

Assignees

• Nokia Technologies Oy

Dates

Publication Date

20260513

Application Date

20230322

Claims (20)

1. A method at a relay user equipment, the method comprising: 1) sending (670) a discovery request to a network; and 2) obtaining (680) a first code from the network; 3) indicating (610), in a relay discovery procedure, a capability of the relay user equipment to support an emergency call; or receiving (620), in the relay discovery procedure, an indication of a need of a remote user equipment to conduct an emergency call, wherein the indication of the need of the remote user equipment comprises a second code; and upon determining that the first code and the second code are matching, indicating the capability of the relay user equipment to support an emergency call; wherein the first code is included when indicating the capability; 4) receiving (630) from the remote user equipment a request for an emergency call to be relayed to the remote user equipment by the relay user equipment; and 5) sending (640) to the network, the request including an emergency relaying indicator.
2. The method of claim 1, further comprising: determining (650) that the request is for the emergency call; and omitting (660) at least one authentication process or mobility restriction for the remote user equipment based on the determination when setting up the emergency call.
3. The method of claim 1, wherein the code is an emergency code.
4. The method of claim 1, wherein the sending the discovery request is triggered according to emergency-specific measurement conditions.
5. A method for a remote user equipment, the method comprising: 1) sending a discovery request to a network; and 2) obtaining a first code from the network; 3) indicating (615), in a relay discovery procedure, a need of the remote user equipment to conduct an emergency call; and receiving a response from a relay user equipment, said response including a second code; or receiving (625), in the relay discovery procedure, an indication of a capability of a relay user equipment to support an emergency call, wherein the indication of the capability of the relay user equipment comprises a second code; wherein the first code is included when indicating the need; 4) sending, upon determining that the first code and the second code match, from the remote user equipment a request for an emergency call to be relayed to the remote user equipment by the relay user equipment; wherein the sending the request is triggered according to emergency-specific measurement conditions.
6. The method of claim 5, wherein the request further comprises an indication that the emergency call is for emergency service in a non-access stratum registration signaling to a network.
7. The method of claim 5, wherein the code is an emergency code.
8. The method of claim 5, further comprising: selecting the relay user equipment based on the indication of the capability.
9. An apparatus (10), comprising: at least one processor (12); and at least one memory (14) comprising computer program instructions, wherein the at least one memory (14) and the computer program instructions are configured to, with the at least one processor (12), cause the apparatus (10) at least to perform the method of claim 1.
10. The apparatus of claim 9, wherein the at least one memory (14) and the computer program instructions are configured to, with the at least one processor (12), cause the apparatus (10) at least to perform: determining (650) that the request is for the emergency call; and omitting (660) at least one authentication process or mobility restriction for the remote user equipment based on the determination when setting up the emergency call.
11. The apparatus of claim 9, wherein the code is an emergency code.
12. The apparatus of claim 9, wherein the sending the discovery request is triggered according to emergency-specific measurement conditions.
13. An apparatus (10), comprising: at least one processor (12); and at least one memory (14) comprising computer program instructions, wherein the at least one memory (14) and the computer program instructions are configured to, with the at least one processor (12), cause the apparatus (10) at least to perform the method of claim 5.
14. The apparatus (10) of claim 13, wherein the request further comprises an indication that the emergency call is for emergency service in a non-access stratum registration signaling to a network.
15. The apparatus of claim 13, wherein the code is an emergency code.
16. The apparatus (10) of claim 13, wherein the at least one memory and the computer program instructions are configured to, with the at least one processor, cause the apparatus at least to perform: selecting the relay user equipment based on the indication of the capability.
17. An apparatus (10), comprising: at least one processor (12); and at least one memory (14) comprising computer program instructions, wherein the at least one memory (14) and the computer program instructions are configured to, with the at least one processor (12), cause the apparatus (10) at least to perform: receiving a discovery request from a relay user equipment and from a remote user equipment; and sending a code to the relay user equipment and to the remote user equipment; receiving, from the relay user equipment, a request for an emergency call to be relayed to a remote user equipment by the relay user equipment; and overriding, in response to the request, at least one restriction otherwise applicable to a call from the remote user equipment; wherein the request comprises an emergency relaying indicator.
18. The apparatus of claim 17, wherein the overriding the at least one restriction comprises at least one of omitting an authentication procedure or overriding a mobility restriction.
19. The apparatus of claim 17, wherein the code is an emergency code.
20. A method at a network, the method comprising: receiving a discovery request from a relay user equipment and from a remote user equipment; and sending a code to the relay user equipment and to the remote user equipment; receiving, from the relay user equipment, a request for an emergency call to be relayed to a remote user equipment by the relay user equipment; and overriding, in response to the request, at least one restriction otherwise applicable to a call from the remote user equipment; wherein the request comprises an emergency relaying indicator.

Description

FIELD: Some example embodiments may generally relate to communications including mobile or wireless telecommunication systems, such as Long Term Evolution (LTE) or fifth generation (5G) radio access technology or new radio (NR) access technology, or other communications systems. For example, certain example embodiments may generally relate to systems and/or methods for providing emergency sessions, such as calls, using a relay provided by proximity services. BACKGROUND: Examples of mobile or wireless telecommunication systems may include the Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (UTRAN), Long Term Evolution (LTE) Evolved UTRAN (E-UTRAN), LTE-Advanced (LTE-A), MulteFire, LTE-A Pro, and/or fifth generation (5G) radio access technology or new radio (NR) access technology. 5G wireless systems refer to the next generation (NG) of radio systems and network architecture. A 5G system is mostly built on a 5G new radio (NR), but a 5G (or NG) network can also build on the E-UTRA radio. It is estimated that NR provides bitrates on the order of 10-20 Gbit/s or higher, and can support at least service categories such as enhanced mobile broadband (eMBB) and ultra-reliable low-latency-communication (URLLC) as well as massive machine type communication (mMTC). NR is expected to deliver extreme broadband and ultra-robust, low latency connectivity and massive networking to support the Internet of Things (IoT). With IoT and machine-to-machine (M2M) communication becoming more widespread, there will be a growing need for networks that meet the needs of lower power, low data rate, and long battery life. The next generation radio access network (NG-RAN) represents the RAN for 5G, which can provide both NR and LTE (and LTE-Advanced) radio accesses. It is noted that, in 5G, the nodes that can provide radio access functionality to a user equipment (i.e., similar to the Node B, NB, in UTRAN or the evolved NB, eNB, in LTE) may be named next-generation NB (gNB) when built on NR radio and may be named next-generation eNB (NG-eNB) when built on E-UTRA radio. SUMMARY: An embodiment may be directed to an apparatus. The apparatus can include at least one processor and at least one memory comprising computer program code. The at least one memory and computer program code can be configured, with the at least one processor, to cause the apparatus at least to perform indicating, in a relay discovery procedure, a capability of a relay user equipment to support an emergency call. The at least one memory and computer program code can alternatively be configured, with the at least one processor, to cause the apparatus at least to perform receiving, in the relay discovery procedure, an indication of a need of a remote user equipment to conduct an emergency call. An embodiment may be directed to an apparatus. The apparatus can include at least one processor and at least one memory comprising computer program code. The at least one memory and computer program code can be configured, with the at least one processor, to cause the apparatus at least to perform indicating, in a relay discovery procedure, a need of a remote user equipment to conduct an emergency call. The at least one memory and computer program code can alternatively be configured, with the at least one processor, to cause the apparatus at least to perform receiving, in the relay discovery procedure, an indication of a capability of a relay user equipment to support an emergency call. An embodiment may be directed to an apparatus. The apparatus can include at least one processor and at least one memory comprising computer program code. The at least one memory and computer program code can be configured, with the at least one processor, to cause the apparatus at least to perform receiving, from a relay user equipment, a request for an emergency call to be relayed to a remote user equipment by the relay user equipment. The at least one memory and computer program code can also be configured, with the at least one processor, to cause the apparatus at least to perform overriding, in response to the request, at least one restriction otherwise applicable to a call from the remote user equipment. An embodiment may be directed to an apparatus. The apparatus can include at least one processor and at least one memory comprising computer program code. The at least one memory and computer program code can be configured, with the at least one processor, to cause the apparatus at least to perform determining that at least one relay user equipment is in proximity to a relay user equipment. The at least one memory and computer program code can also be configured, with the at least one processor, to cause the apparatus at least to perform sending a broadcast direct link establishment request with an indication that the request is for an emergency call, while bypassing initial relay selection procedures. The at least one memory and computer program code can furt