IP Library › Granted Patent US 12,726,822
Granted Patent B2
US 12,726,822 · App. 18/189,457 · Granted Sep 1, 2026

Enhanced interconnection between cellular communication networks

Inventors: Prashanti Das (Bangalore, IN); Saurabh Khare (Bangalore, IN); Bruno Landais (Pleumeur-Bodou, FR)
Assignee: Nokia Technologies Oy
H04W12/088H04W84/042
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Quick Facts
Patent No.
US 12,726,822
App. No.
18/189,457
Granted
Sep 1, 2026
Kind
B2
Abstract

According to an example aspect of the present disclosure, there is provided an apparatus comprising at least one processing core, at least one memory including computer program code, the at least one memory and the computer program code being configured to, with the at least one processing core, cause the apparatus to perform at least one of: transmit to a second security edge protection proxy (SEPP) of a second public land mobile network (PLMN), in a control plane signaling procedure, addressing information of a first SEPP of a first PLMN, to be used by the second SEPP for forwarding messages from the second PLMN to the first PLMN and receive from the second SEPP of the second PLMN, in the control plane signaling procedure, addressing information of the second SEPP of the second PLMN, to be used by the first SEPP for forwarding messages from the first PLMN to the second PLMN.

Claims (16)

1 . An apparatus comprising at least one processing core, at least one memory including computer program code, the at least one memory and the computer program code being configured to, with the at least one processing core, cause the apparatus to perform at least:

transmit to a second security edge protection proxy (SEPP) of a second public land mobile network (PLMN), in a control plane signaling procedure, addressing information of a first SEPP of a first PLMN, to be used by the second SEPP for forwarding messages from the second PLMN to the first PLMN, wherein the addressing information comprises a service fully qualified domain name comprising a domain name system service resolution; and

receive from the second SEPP of the second PLMN, in the control plane signaling procedure, addressing information of the second SEPP of the second PLMN, to be used by the first SEPP for forwarding messages from the first PLMN to the second PLMN.

2 . The apparatus according to claim 1 , wherein the at least one memory and the computer program code are configured to, with the at least one processing core, further cause the apparatus to:

receive a message from the second SEPP via a forwarding interface by using the addressing information of the first SEPP; or

transmit a message to the second SEPP via the forwarding interface by using the addressing information of the second SEPP.

3 . The apparatus according to claim 1 , wherein:

the control plane signaling procedure is a security capability negotiation procedure.

4 . A method, comprising at least:

transmitting to a second security edge protection proxy (SEPP) of a second public land mobile network (PLMN), in a control plane signaling procedure, addressing information of a first SEPP of a first PLMN, to be used by the second SEPP for forwarding messages from the second PLMN to the first PLMN, wherein the addressing information comprises a service fully qualified domain name comprising a domain name system service resolution; and

receiving from the second SEPP of the second PLMN, in the control plane signaling procedure, addressing information of the second SEPP of the second PLMN, to be used by the first SEPP for forwarding messages from the first PLMN to the second PLMN.

5 . The method according to claim 4 , further comprising:

receiving a message from the second SEPP via a forwarding interface by using the addressing information of the first SEPP; or

transmitting a message to the second SEPP via the forwarding interface by using the addressing information of the second SEPP.

6 . The method according to claim 4 , wherein:

the control plane signaling procedure is a security capability negotiation procedure.

Assignments (4)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 13, 2023
From: LANDAIS, BRUNO
To: ALCATEL-LUCENT INTERNATIONAL S.A
Reel/Frame 063309/0141 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 13, 2023
From: DAS, PRASHANTI; KHARE, SAURABH
To: NOKIA SOLUTIONS AND NETWORKS INDIA PRIVATE LIMITED
Reel/Frame 063309/0164 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 13, 2023
From: ALCATEL-LUCENT INTERNATIONAL S.A.
To: NOKIA TECHNOLOGIES OY
Reel/Frame 063309/0174 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 13, 2023
From: NOKIA SOLUTIONS AND NETWORKS INDIA PRIVATE LIMITED
To: NOKIA TECHNOLOGIES OY
Reel/Frame 063309/0182 →
Priority Claims (1)
IN 202241018384 · Mar 29, 2022 · national
Continuity (1)
Related Publication 20230319569A1 · Oct 5, 2023
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