# US 12,225,405 B2 · Method and apparatus for generating connection in wireless communication system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,225,405 B2 - Document ID: US12225405B2 - Status: Granted - Kind: B2 - Application number: 18/522,947 - Filed: 2023-11-29 - Published: 2024-03-21 - Granted: 2025-02-11 - Earliest claimed: 2014-03-13 - Assignees: Samsung Electronics Co., Ltd. - Applicants: Samsung Electronics Co., Ltd. - Inventors: Sangsoo Jeong; Songyean Cho - Web page: https://patentgrep.com/patent/US12225405B2 ## CPC - H04W 28/0268: {using specific QoS parameters for wireless networks, e.g. QoS class identifier [QCI] or guaranteed bit rate [GBR] (negotiating SLA or negotiating QoS H04W28/24)} - H04L 12/1407: {Policy-and-charging control [PCC] architecture} - H04M 15/66: {Policy and charging system} - H04W 4/24: Accounting or billing - H04W 8/02: Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks - H04W 76/10: Connection setup - H04W 76/11: Allocation or use of connection identifiers - H04W 76/12: Setup of transport tunnels - H04W 88/16: Gateway arrangements - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04M: TELEPHONIC COMMUNICATION (circuits for controlling other apparatus via a telephone cable and not involving telephone switching apparatus G08) ## Abstract A method performed by a master base station supporting a dual connectivity with a secondary base station in a wireless communication system is provided. The method includes transmitting, to the secondary base station, address information associated with data forwarding, receiving, from the secondary base station, a first message associated with a data usage of the secondary base station, the first message including information on a data volume for a radio access technology (RAT) of the secondary base station, and transmitting, to a first network entity performing a mobility management, a second message including the information on the data volume for the RAT of the secondary base station, based on a trigger by a handover of a terminal from the master base station that is a source base station to a target master base station, wherein the data volume for the RAT of the secondary base station reported to the first network entity excludes data that is forwarded from the secondary base station to the target master base station based on the address information during the handover. ## Claims ### Claim 1 A method performed by a master base station supporting a dual connectivity with a secondary base station in a wireless communication system, the method comprising: transmitting, to the secondary base station, address information associated with data forwarding; receiving, from the secondary base station, a first message associated with a data usage of the secondary base station, the first message including information on a data volume for a radio access technology (RAT) of the secondary base station; and transmitting, to a first network entity performing a mobility management, a second message including the information on the data volume for the RAT of the secondary base station, based on a trigger by a handover of a terminal from the master base station that is a source base station to a target master base station, wherein the data volume for the RAT of the secondary base station reported to the first network entity excludes data that is forwarded from the secondary base station to the target master base station based on the address information during the handover. ### Claim 2 (depends on 1) The method of claim 1, wherein the information on the data volume for the RAT of the secondary base station included in the second message is transmitted from the first network entity to a second network entity performing a session management. ### Claim 3 (depends on 1) The method of claim 1, wherein the second message further includes bitmap information indicating whether data packets are successfully forwarded from the secondary base station to the target master base station, and wherein each bit of the bitmap information corresponds to one of the data packets. ### Claim 4 (depends on 1) The method of claim 1, further comprising: receiving, from the secondary base station, information indicating whether the data forwarding from the secondary base station to the target master base station is available. ### Claim 5 A method performed by a secondary base station supporting a dual connectivity with a master base station in a wireless communication system, the method comprising: receiving, from the master base station, address information associated with data forwarding; forwarding, from the secondary base station to a target master base station, a data based on the address information during a handover of a terminal from the master base station that is a source base station to the target master base station; and transmitting, to the master base station, a first message associated with a data usage of the secondary base station, the first message including information on a data volume for a radio access technology (RAT) of the secondary base station, wherein the information on the data volume for the RAT of the secondary base station is delivered via the master base station to a first network entity performing a mobility management based on a trigger by the handover, and wherein the data volume for the RAT of the secondary base station reported to the first network entity excludes data that is forwarded from the secondary base station to the target master base station based on the address information during the handover. ### Claim 6 (depends on 5) The method of claim 5, wherein the information on the data volume for the RAT of the secondary base station included in the first message is transmitted from the first network entity to a second network entity performing a session management. ### Claim 7 (depends on 5) The method of claim 5, wherein the first message further includes bitmap information indicating whether data packets are successfully forwarded from the secondary base station to the target master base station, and wherein each bit of the bitmap information corresponds to one of the data packets. ### Claim 8 (depends on 5) The method of claim 5, further comprising: transmitting, to the master base station, information indicating whether the data forwarding from the secondary base station to the target master base station is available. ### Claim 9 A method performed by a first network entity performing a mobility management for a terminal configured with a dual connectivity with a master base station and a secondary base station in a wireless communication system, the method comprising: receiving, from the master base station, a first message for reporting a data usage of the secondary base station, based on a trigger by a handover of the terminal from the master base station that is a source base station to a target master base station, wherein the first message includes information on a data volume for a radio access technology (RAT) of the secondary base station, and the information on the data volume for the RAT of the secondary base station is included in a second message transmitted from the secondary base station to the master base station, wherein the data volume for the RAT of the secondary base station reported to the first network entity excludes data that is forwarded from the secondary base station to the target master base station based on address information during the handover, and wherein the address information associated with data forwarding is transmitted from the master base station to the secondary base station. ### Claim 10 (depends on 9) The method of claim 9, further comprising transmitting, to a second network entity performing a session management, the information included in the first message. ### Claim 11 A master base station supporting a dual connectivity with a secondary base station in a wireless communication system, the master base station comprising: a transceiver configured to transmit or receive a signal; and a controller configured to: transmit, via the transceiver to the secondary base station, address information associated with data forwarding, receive, via the transceiver from the secondary base station, a first message associated with a data usage of the secondary base station, the first message including information on a data volume for a radio access technology (RAT) of the secondary base station, and transmit, via the transceiver to a first network entity performing a mobility management, a second message including the information on the data volume for the RAT of the secondary base station, based on a trigger by a handover of a terminal from the master base station that is a source base station to a target master base station, wherein the data volume for the RAT of the secondary base station reported to the first network entity excludes data that is forwarded from the secondary base station to the target master base station based on the address information during the handover. ### Claim 12 (depends on 11) The master base station of claim 11, wherein the information on the data volume for the RAT of the secondary base station included in the second message is transmitted from the first network entity to a second network entity performing a session management. ### Claim 13 (depends on 11) The master base station of claim 11, wherein the second message further includes bitmap information indicating whether data packets are successfully forwarded from the secondary base station to the target master base station, and wherein each bit of the bitmap information corresponds to one of the data packets. ### Claim 14 (depends on 11) The master base station of claim 11, wherein the controller is further configured to receive, via the transceiver from the secondary base station, information indicating whether the data forwarding from the secondary base station to the target master base station is available.