# US 2014/0153536 A1 · Communication system, terminal, base station, and communication method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0153536 A1 - Document ID: US20140153536A1 - Status: Published application - Kind: A1 - Application number: 14/236,481 - Filed: 2012-08-02 - Published: 2014-06-05 - Earliest claimed: 2011-08-02 - Assignees: Sharp Kabushiki Kaisha - Inventors: Wataru Ouchi; Kimihiko Imamura; Yosuke Akimoto; Toshizo Nogami; Daiichiro Nakashima; Kazuyuki Shimezawa; Shoichi Suzuki; Yasuyuki Kato; Katsunari Uemura - Web page: https://patentgrep.com/patent/US20140153536A1 ## CPC - H04W 52/04: Transmission power control [TPC] - H04L 5/0037: {Inter-user or inter-terminal allocation} - H04W 52/146: {Uplink power control} - H04W 52/242: {taking into account path loss} - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - 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 There are provided a base station, a terminal, a communication system, and a communication method in a wireless communication system in which a base station and a terminal 102 communicate with each other, in which the base station 101 can efficiently notify the terminal 102 of control information. The base station 101 includes a transmitting unit 507 configured to transmit to the terminal a radio resource control signal including information concerning a first uplink power control related parameter configuration and information concerning a second uplink power control related parameter configuration. The base station 101 configures, as a first value, information concerning a transmit power control command value included in a physical downlink control channel transmitted in a first subframe subset, notifies the terminal of the information, configures, as a second value, independently from the first value, information concerning a transmit power control command value included in a physical downlink control channel transmitted in a second subframe subset, and notifies the terminal of the information. ## Claims ### Claim 1 (canceled) ### Claim 2 A communication system comprising a base station and a terminal, wherein the base station transmits to the terminal a radio resource control signal including information concerning a first uplink power control related parameter configuration and information concerning a second uplink power control related parameter configuration, and transmits a physical downlink control channel to the terminal, and the terminal sets, in accordance with the radio resource control signal, a path loss and an uplink transmit power on the basis of the information concerning the first uplink power control related parameter configuration in a case where the physical downlink control channel has been detected in a downlink subframe included in a first subframe subset, sets a path loss and an uplink transmit power on the basis of the information concerning the second uplink power control related parameter configuration in a case where the physical downlink control channel has been detected in a downlink subframe included in a second subframe subset, and transmits an uplink signal at the uplink transmit power in an uplink subframe associated with the downlink subframe. ### Claim 3 (canceled) ### Claim 4 A terminal for communicating with a base station, comprising: a receiving unit configured to receive a radio resource control signal including information concerning a first uplink power control related parameter configuration and information concerning a second uplink power control related parameter configuration; a higher layer processing unit configured to set a first path loss on the basis of the information concerning the first uplink power control related parameter configuration, and to set a second path loss on the basis of the information concerning the second uplink power control related parameter configuration; and a transmit power control unit configured to set a first uplink transmit power on the basis of the information concerning the first uplink power control related parameter configuration and the first path loss, and to set a second uplink transmit power on the basis of the information concerning the second uplink power control related parameter configuration and the second path loss. ### Claim 5 (depends on 4) The terminal according to claim 4, wherein in a case where a physical downlink control channel has been detected in a downlink subframe included in a first subframe subset, the terminal transmits an uplink signal to the base station at the first uplink transmit power, and in a case where a physical downlink control channel has been detected in a downlink subframe included in a second subframe subset, the terminal transmits an uplink signal to the base station at the second uplink transmit power. ### Claim 6 (depends on 4) The terminal according to claim 4, wherein in a case where a physical downlink control channel has been detected in a first control channel region, the terminal transmits an uplink signal to the base station at the first uplink transmit power, and in a case where a physical downlink control channel has been detected in a second control channel region, the terminal transmits an uplink signal to the base station at the second uplink transmit power. ### Claim 7 A base station for communicating with a terminal, comprising: a transmitting unit configured to transmit to the terminal a radio resource control signal including information concerning a first uplink power control related parameter configuration and information concerning a second uplink power control related parameter configuration. ### Claim 8 (depends on 7) The base station according to claim 7, wherein the base station configures, as a first value, information concerning a transmit power control command value included in a physical downlink control channel transmitted in a first subframe subset, and notifies the terminal of the information, and the base station configures, as a second value, independently from the first value, information concerning a transmit power control command value included in a physical downlink control channel transmitted in a second subframe subset, and notifies the terminal of the information. ### Claim 9 (depends on 7) The base station according to claim 7, wherein the base station receives an uplink signal transmitted in an uplink subframe included in a first subframe subset, and performs demodulation processing on the received uplink signal, and the base station receives an uplink signal transmitted in an uplink subframe included in a second subframe subset, and does not perform demodulation processing on the received uplink signal. ### Claim 10 (depends on 7) The base station according to claim 7, wherein the base station configures, as a first value, information concerning a transmit power control command included in a physical downlink control channel mapped to a first control channel region, and notifies the terminal of the information, and the base station configures, as a second value, independently from the first value, information concerning a transmit power control command included in a physical downlink control channel mapped to a second control channel region, and notifies the terminal of the information. ### Claim 11 (canceled) ### Claim 12 A communication method for a communication system including a base station and a terminal, comprising: a step in which the base station transmits to the terminal a radio resource control signal including information concerning a first uplink power control related parameter configuration and information concerning a second uplink power control related parameter configuration; a step in which the base station transmits a physical downlink control channel to the terminal; and a step in which the terminal sets a path loss and an uplink transmit power on the basis of the information concerning the first uplink power control related parameter configuration in a case where the physical downlink control channel has been detected in a downlink subframe included in a first subframe subset, and transmits an uplink signal in an uplink subframe associated with the downlink subframe, and sets a path loss and an uplink transmit power on the basis of the information concerning the second uplink power control related parameter configuration in a case where the physical downlink control channel has been detected in a downlink subframe included in a second subframe subset, and transmits an uplink signal in an uplink subframe associated with the downlink subframe. ### Claim 13 (depends on 2) The communication system according to claim 2, wherein the base station configures information concerning a channel loss compensation coefficient α in each of the information concerning the first uplink power control related parameter configuration and the information concerning the second uplink power control related parameter configuration. ### Claim 14 (depends on 2) The communication system according to claim 2, wherein the base station configures information concerning a nominal physical uplink shared channel power in each of the information concerning the first uplink power control related parameter configuration and the information concerning the second uplink power control related parameter configuration. ### Claim 15 (depends on 2) The communication system according to claim 2, wherein the base station configures information concerning a UE-specific physical uplink shared channel power in each of the information concerning the first uplink power control related parameter configuration and the information concerning the second uplink power control related parameter configuration. ### Claim 16 (depends on 7) The base station according to claim 7, wherein the base station configures information concerning a channel loss compensation coefficient α in each of the information concerning the first uplink power control related parameter configuration and the information concerning the second uplink power control related parameter configuration. ### Claim 17 (depends on 7) The base station according to claim 7, wherein the base station configures a nominal physical uplink shared channel power in each of the first uplink power control related parameter configuration and the second uplink power control related parameter configuration. ### Claim 18 (depends on 7) The base station according to claim 7, wherein the base station configures information concerning a UE-specific physical uplink shared channel power in each of the information concerning the first uplink power control related parameter configuration and the information concerning the second uplink power control related parameter configuration.