# US 10,772,047 B2 · Transmission power sharing between dual connectivity cell groups > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,772,047 B2 - Document ID: US10772047B2 - Status: Granted - Kind: B2 - Application number: 16/366,525 - Filed: 2019-03-27 - Published: 2019-07-18 - Granted: 2020-09-08 - Earliest claimed: 2017-08-10 - Assignees: Fujitsu Limited - Applicants: Fujitsu Limited - Inventors: Hongyang Chen; Jianming Wu; Tsuyoshi Shimomura - Web page: https://patentgrep.com/patent/US10772047B2 ## CPC - H04W 52/34: TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading - H04W 52/40: during macro-diversity or soft handoff - H04L 5/001: {the frequencies being arranged in component carriers} - H04W 52/146: {Uplink power control} - H04W 52/346: {distributing total power among users or channels} - H04W 52/367: {Power values between minimum and maximum limits, e.g. dynamic range} - H04W 72/044: based on the type of the allocated resource - H04W 76/15: Setup of multiple wireless link connections - H04W 76/27: Transitions between radio resource control [RRC] states - H04W 52/16: Deriving transmission power values from another channel - H04W 52/281: {taking into account user or data type priority} - 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 A terminal device includes a processor circuitry and a receiver. The processor circuitry is configured to perform dual connectivity with a cell group and a different cell group, and to control transmission power sharing between the cell group and the different cell group. The receiver is configured to receive a signal on the cell group and the different cell group. ## Claims ### Claim 1 A terminal device comprising: processor circuitry configured to: perform dual connectivity with a cell group and a different cell group, control transmission power sharing between the cell group and the different cell group which is adopted in a synchronous LTE-NR DC scenario, calculate a first transmission power amount of the cell group with reference to parameters including number of resources block, path loss and a configured maximum output power which is notified using a radio resource control (RRC) signaling from a first radio base station and a second transmission power amount of the different cell group with reference to parameters including number of resource block, path loss, and the configured maximum output power which is notified using a radio resource control (RRC) signaling from a second radio base station, and when transmissions of the cell group overlap in time with transmissions of the different cell group and a total amount of the first transmission power amount of the cell group and the second transmission power amount of the different cell group during the overlapping time is larger than a configured maximum transmission power amount, a transmission power amount of a slot that is used for transferring data using the uplink toward the cell group or a transmission power amount of a slot that is used for transferring data using the uplink toward the different cell group during the overlapping time such that the total amount of the transmission power amount of the cell group and the transmission power amount of the different cell group is less than or equal to the configured maximum transmission power amount, and a receiver configured to receive a signal on the cell group and the different cell group. ### Claim 2 (depends on 1) The terminal device of claim 1, wherein each of the cell group and the different cell group uses either long term evolution (LTE) radio access or new radio (NR) radio access. ### Claim 3 (depends on 2) The terminal device of claim 2, wherein the overlapping time consists of a portion of slot. ### Claim 4 A radio base station of a cell group, the base station comprising: the base station that communicates with a user terminal by employing dual connectivity with a different cell group different from the cell group, the radio base station comprising: a transmitter configured to transmit radio resource control (RRC) signaling that includes parameters including number of resource block, path loss and a configured maximum output power, for calculating a first transmission power amount, one of the parameters being a first maximum guaranteed power amount that is available for uplink toward the different cell group; and that includes parameters including number of resource block, path loss and a maximum output power, for calculating a second transmission power amount, one of the parameters being a second maximum guaranteed power amount that is available for the uplink toward the cell group and for allocating the second amount to a transmission power amount of a slot that is used for transferring data using the uplink toward the cell group, if the second amount is contained in the slot for the uplink toward the different cell group when data is transferred using the uplink toward the cell group; and a receiver configured to receive a signal for reduced transmission power amount of the cell group overlapping in time with transmission in a slot that is used for transferring data using the uplink toward the different cell group. ### Claim 5 (depends on 4) The radio base station of claim 4, wherein each of the cell group and the different cell group uses either long term evolution (LTE) radio access or new radio (NR) radio access. ### Claim 6 (depends on 5) The radio base station of claim 5, wherein the overlapping in time consists of a portion of slot.