US 12,438,951 B2
Electronic device, method, and computer program product for obtaining IPV6 addresses
Mingtuo Zhou, Tokyo (JP); Xiaoxue Wang, Tokyo (JP); and Chen Sun, Tokyo (JP)
Assigned to SONY GROUP CORPORATION, Tokyo (JP)
Filed by Sony Group Corporation, Tokyo (JP)
Filed on Mar. 13, 2024, as Appl. No. 18/603,229.
Claims priority of application No. 202310339570.2 (CN), filed on Mar. 31, 2023.
Prior Publication US 2024/0333806 A1, Oct. 3, 2024
Int. Cl. H04L 67/147 (2022.01); H04L 67/141 (2022.01); H04L 67/63 (2022.01)
CPC H04L 67/147 (2013.01) [H04L 67/141 (2013.01); H04L 67/63 (2022.05)] 10 Claims
OG exemplary drawing
 
1. An electronic device for a terminal device, comprising a processing circuit configured to:
send a first message to a network,
wherein the first message comprises both a first PDU session establishment request message for a first PDU session and a Router Solicitation (RS);
in response to the first message, receive a second message from the network, the second message comprising both a first PDU session establishment accept message for the first PDU session and a Router Advertisement (RA),
wherein the RA comprises a first IPv6 prefix;
establish the first PDU session based on the first PDU session establishment accept message and the first IPv6 prefix;
send a first PDU session release request message for the first PDU session and reuse request information to the network,
wherein the reuse request information indicates that the terminal device expects to reuse the first IPv6 prefix for a second PDU session;
receive a first PDU session release response message for the first PDU session and reuse acknowledgment information from the network,
wherein the reuse acknowledgment information indicates that the network is ready to reuse the first IPv6 prefix;
send a third message to the network, the third message including both a second PDU session establishment request message for the second PDU session and reuse indication information,
wherein the reuse indication information indicates that the first IPv6 prefix is to be reused for the second PDU session;
in response the third message, receive a fourth message from the network, the fourth message comprising a second PDU session establishment accept message for the first PDU session, the second PDU session establishment accept message including an acknowledgement indicator whether or not the reuse indication information in the third message is acknowledged; and
establish the second PDU session based on the second PDU session establishment accept message and the acknowledgement indicator.