# US 2019/0174342 A1 · First unit, second unit and method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0174342 A1 - Document ID: US20190174342A1 - Status: Published application - Kind: A1 - Application number: 16/270,161 - Filed: 2019-02-07 - Published: 2019-06-06 - Earliest claimed: 2018-02-13 - Assignees: NEC Corporation - Applicants: NEC Corporation - Inventors: Toshihiro YOKOYAMA; Sadafuku HAYASHI - Web page: https://patentgrep.com/patent/US20190174342A1 ## CPC - H04W 24/10: Scheduling measurement reports {; Arrangements for measurement reports} - H04L 43/0876: Network utilisation, e.g. volume of load or congestion level - H04L 43/0894: Packet rate - H04W 76/15: Setup of multiple wireless link connections - H04W 88/10: adapted for operation in multiple networks, e.g. multi-mode access points - H04W 88/12: Access point controller devices - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04L 5/0091: {Signalling for the administration of the divided path, e.g. signalling of configuration information} - H04L 43/20: the monitoring system or the monitored elements being virtualised, abstracted or software-defined entities, e.g. SDN or NFV - H04W 80/08: Upper layer protocols {(network arrangements or communication protocols for networked applications H04L67/00)} - H04W 88/085: {Access point devices with remote components} - H04W 92/20: between access points - 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) ## Abstract In order to make it possible to report an amount of data from a secondary node (SN) to a master node (MN) in dual connectivity, there is provided a first unit according to the present disclosure which is a first unit of a central unit of a first base station. The first unit includes a controller and a transceiver. The central unit is configured to host at least PDCP layer in the first base station; and is connected to a distributed unit via a first interface, the distributed unit hosting RLC, MAC and PHY layers in the first base station. The controller is configured to host at least a user plane of the PDCP layer hosted by the central unit; and the transceiver is configured to transmit, to a second unit via a second interface, first information indicative of a volume of data processed by the first unit. The second unit is configured to host at least a control plane of the PDCP layer hosted by the central unit. ## Claims ### Claim 1 A first unit of a central unit of a first base station, the first unit comprising a controller and a transceiver, wherein: the central unit is configured to host at least PDCP layer in the first base station; and is connected to a distributed unit via a first interface, the distributed unit hosting RLC, MAC and PHY layers in the first base station; and wherein the controller is configured to host at least a user plane of the PDCP layer hosted by the central unit; and the transceiver is configured to transmit, to a second unit via a second interface, first information indicative of a volume of data processed by the first unit, wherein the second unit is configured to host at least a control plane of the PDCP layer hosted by the central unit. ### Claim 2 (depends on 1) The first unit according to claim 1, wherein the volume of data is an amount of data used by a terminal apparatus. ### Claim 3 (depends on 1) The first unit according to claim 1, wherein the first base station is a gNB. ### Claim 4 (depends on 1) The first unit according to claim 1, wherein the first base station is an en-gNB. ### Claim 5 (depends on 4) The first unit according to claim 4, wherein the first base station is a secondary node in E-UTRA-NR Dual Connectivity. ### Claim 6 (depends on 1) The first unit according to claim 1, wherein the first base station is connected to an Evolved Packet Core (EPC). ### Claim 7 (depends on 1) The first unit according to claim 1, wherein the first base station is connected to a 5G core network. ### Claim 8 (depends on 1) The first unit according to claim 1, wherein the first base station is a secondary node in Dual Connectivity; and the first information is transmitted by the second unit to a master node in Dual Connectivity. ### Claim 9 A second unit of a central unit of a first base station, the second unit comprising a controller and a transceiver, wherein: the central unit is configured to host at least PDCP layer in the first base station; and is connected to a distributed unit via a first interface, the distributed unit hosting RLC, MAC and PHY layers in the first base station; and wherein the controller is configured to host at least a control plane of the PDCP layer hosted by the central unit; and the transceiver is configured to receive, from a first unit via a second interface, first information indicative of a volume of data processed by the first unit, wherein the first unit is configured to host at least a user plane of the PDCP layer hosted by the central unit. ### Claim 10 (depends on 9) The second unit according to claim 9, wherein the volume of data is an amount of data used by a terminal apparatus. ### Claim 11 (depends on 9) The second unit according to claim 9, wherein the first base station is a gNB. ### Claim 12 (depends on 9) The second unit according to claim 9, wherein the first base station is an en-gNB. ### Claim 13 (depends on 12) The second unit according to claim 12, wherein the first base station is a secondary node in E-UTRA-NR Dual Connectivity. ### Claim 14 (depends on 9) The second unit according to claim 9, wherein the first base station is connected to an Evolved Packet Core (EPC). ### Claim 15 (depends on 9) The second unit according to claim 9, wherein the first base station is connected to a 5G core network. ### Claim 16 (depends on 9) The second unit according to claim 9, wherein the first base station is a secondary node in Dual Connectivity; and the transceiver is configured to transmit the first information to a master node in Dual Connectivity. ### Claim 17 A method performed by a first unit of a central unit of a first base station, wherein at least PDCP layer in the first base station is hosted by the central unit; and the central unit is connected to a distributed unit via a first interface, the distributed unit hosting RLC, MAC and PHY layers in the first base station, the method comprising: hosting at least a user plane of the PDCP layer hosted by the central unit; and transmitting to a second unit via a second interface, first information indicative of a volume of data processed by the first unit, wherein the second unit is configured to host at least a control plane of the PDCP layer hosted by the central unit. ### Claim 18 (depends on 17) The method according to claim 17, wherein the volume of data is an amount of data used by a terminal apparatus. ### Claim 19 (depends on 17) The method according to claim 17, wherein the first base station is a gNB. ### Claim 20 (depends on 17) The method according to claim 17, wherein the first information is transmitted by the second unit to a master node in Dual Connectivity.