# US 11,116,025 B2 · Communication system, communication terminal device, and base station device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,116,025 B2 - Document ID: US11116025B2 - Status: Granted - Kind: B2 - Application number: 16/633,307 - Filed: 2018-08-07 - Published: 2020-05-21 - Granted: 2021-09-07 - Earliest claimed: 2017-08-08 - Assignees: Mitsubishi Electric Corporation - Applicants: Mitsubishi Electric Corporation - Inventors: Mitsuru Mochizuki; Tadahiro Shimoda - Web page: https://patentgrep.com/patent/US11116025B2 ## CPC - H04W 76/15: Setup of multiple wireless link connections - H04L 1/08: by repeating transmission, e.g. Verdan system {(H04L1/1858 and H04L1/189 take precedence)} - H04L 5/001: {the frequencies being arranged in component carriers} - H04L 5/0098: {Signalling of the activation or deactivation of component carriers, subcarriers or frequency bands} - H04W 16/32: Hierarchical cell structures - H04W 36/0069: {in case of dual connectivity, e.g. decoupled uplink/downlink} - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04W 72/56: based on priority criteria - H04W 88/06: adapted for operation in multiple networks {or having at least two operational modes}, e.g. multi-mode terminals - H04L 5/0064: {Rate requirement of the data, e.g. scalable bandwidth, data priority} - H04W 36/00692: {using simultaneous multiple data streams, e.g. cooperative multipoint [CoMP], carrier aggregation [CA] or multiple input multiple output [MIMO] (allocation of physical resources in CoMP or in CA H04L5/0035)} - H04W 76/34: Selective release of ongoing connections - H04W 80/02: Data link layer protocols - 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 Provided is a high-speed communication system with high reliability and low latency, etc., under New Radio (NR). A communication system includes a communication terminal device, and a base station device configured to perform radio communication with the communication terminal device. The communication terminal device is configured to duplicate a packet and transmit the duplicated packets with carrier aggregation. The base station device is configured to transmit, to the communication terminal device, packet duplication control on packet duplication and secondary cell control on a secondary cell to be used for the carrier aggregation. The communication terminal device is configured to perform the packet duplication control and the secondary cell control based on priorities defined between the packet duplication control and the secondary cell control. ## Claims ### Claim 1 A communication system, comprising: a communication terminal device; and a base station device configured to perform radio communication with the communication terminal device, wherein the communication terminal device is configured to duplicate a packet and transmit the duplicated packets with carrier aggregation, the base station device is configured to transmit, to the communication terminal device, packet duplication control on packet duplication and secondary cell control on a secondary cell to be used for the carrier aggregation, and the communication terminal device is configured to perform the packet duplication control and the secondary cell control based on priorities defined between the packet duplication control and the secondary cell control. ### Claim 2 (depends on 1) The communication system according to claim 1, wherein the priorities are defined so that the secondary cell control is prioritized over the packet duplication control. ### Claim 3 (depends on 2) The communication system according to claim 2, wherein the communication terminal device is configured to deactivate not only the secondary cell but also the packet duplication, upon receipt of an instruction for deactivating the secondary cell during execution of the packet duplication. ### Claim 4 (depends on 2) The communication system according to claim 2, wherein the communication terminal device is configured to continue to deactivate the secondary cell and maintain deactivation of the packet duplication, even upon receipt of an instruction for activating the packet duplication during a deactivated state of the secondary cell. ### Claim 5 (depends on 1) The communication system according to claim 1, wherein the priorities are defined so that the packet duplication control is prioritized over the secondary cell control. ### Claim 6 (depends on 5) The communication system according to claim 5, wherein the communication terminal device is configured to continue the packet duplication, even upon receipt of an instruction for deactivating the secondary cell during execution of the packet duplication. ### Claim 7 (depends on 5) The communication system according to claim 5, wherein the communication terminal device is configured to activate the packet duplication in response to activation of the secondary cell, upon receipt of an instruction for activating the packet duplication during a deactivated state of the secondary cell. ### Claim 8 (depends on 1) The communication system according to claim 1, wherein the priorities define which one of the packet duplication control and the secondary cell control is prioritized according to a packet to be duplicated. ### Claim 9 A communication terminal device configured to perform radio communication with a base station device, wherein the communication terminal device is configured to duplicate a packet and transmit the duplicated packets with carrier aggregation, and the communication terminal device is configured to receive, from the base station device, packet duplication control on packet duplication and secondary cell control on a secondary cell to be used for the carrier aggregation, and perform the packet duplication control and the secondary cell control based on priorities defined between the packet duplication control and the secondary cell control. ### Claim 10 A base station device configured to perform radio communication with a communication terminal device, wherein the communication terminal device is configured to duplicate a packet and transmit the duplicated packets with carrier aggregation, the communication terminal device is configured to perform packet duplication control on packet duplication and secondary cell control on a secondary cell to be used for the carrier aggregation, based on priorities defined between the packet duplication control and the secondary cell control, and the base station device is configured to transmit the packet duplication control and the secondary cell control to the communication terminal device.