# US 8,542,631 B2 · Communication device and method for internally redirecting control information > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,542,631 B2 - Document ID: US8542631B2 - Status: Granted - Kind: B2 - Application number: 12/425,227 - Filed: 2009-04-16 - Published: 2009-08-13 - Granted: 2013-09-24 - Earliest claimed: 2006-12-26 - Assignees: Fujitsu Limited - Applicants: Kohei Iseda; Tsuguo Kato - Inventors: Kohei Iseda; Tsuguo Kato - Web page: https://patentgrep.com/patent/US8542631B2 ## CPC - H04W 88/04: adapted for relaying to or from another terminal or user - H04W 72/20: Control channels or signalling for resource management - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract A base station unit of a communication device generates control information identical with those generated by other communication devices. The control information includes information defining regions in a radio frame that are used by the communication device and the other communication devices to transmit data. A terminal unit receives data in accordance with the control information. A switching unit changes the connection among the base station unit, the terminal unit and an antenna. When the control information is output from the base station unit, a switch controller operates the switching unit so that the base station unit may be connected to the terminal unit to output the control information to the terminal unit. ## Claims ### Claim 1 A communication device for performing wireless communication, comprising: a base station unit configured to generate control information identical with those generated by other communication devices, the control information including information defining regions in a radio frame which are used by the communication device and the other communication devices to transmit data; a terminal unit configured to receive data in accordance with the control information; a switching unit configured to change connection among the base station unit, the terminal unit and an antenna; and a switch controller configured to operate the switching unit such that when the communication device communicates with other communication devices which include units identical with the base station unit and the terminal unit and the control information is output from the base station unit, the base station unit is connected to the terminal unit to output the control information to the terminal unit; wherein, when the terminal unit receives the data in accordance with the control information, the switch controller controls the switching unit such that the terminal unit is connected to the antenna. ### Claim 2 (depends on 1) The communication device according to claim 1, wherein, when the base station unit transmits the data, the switch controller controls the switching unit such that the base station unit is connected to the antenna. ### Claim 3 (depends on 1) The communication device according to claim 1, wherein the control information further includes a preamble and a frame control header. ### Claim 4 (depends on 1) The communication device according to claim 1, wherein the base station unit transmits the data in one of the regions. ### Claim 5 (depends on 1) The communication device according to claim 1, wherein the terminal unit receives the data from the other communication devices in other regions than the region in which the base station unit transmits the data. ### Claim 6 (depends on 1) The communication device according to claim 1, wherein the switch controller operates the switching unit such that the base station unit is connected to the antenna to transmit part of the control information via the radio frame. ### Claim 7 (depends on 1) The communication device according to claim 1, wherein the switch controller operates the switching unit such that the terminal unit is connected to the antenna to receive part of the control information transmitted thereto via the radio frame. ### Claim 8 (depends on 1) The communication device according to claim 1, wherein the base station unit transmits the data in the regions in a predetermined number of times within a predetermined period of time. ### Claim 9 A communication method for a communication device which comprises a base station unit, a terminal unit, a switching unit and a switch controller configured to perform wireless communication, the communication method comprising: generating, by the base station unit, control information identical with those generated by other communication devices, the control information including information defining regions in a radio frame which are used by the communication device and the other communication devices to transmit data; receiving, by the terminal unit data, in accordance with the control information; changing, by the switching unit, connection among the base station unit, the terminal unit and an antenna; and operating, by the switch controller, the switching unit such that when the communication device communicates with other communication devices which include units identical with the base station unit and the terminal unit and the control information is output from the base station unit, the base station unit is connected to the terminal unit to output the control information to the terminal unit; wherein, when the terminal unit receives the data in accordance with the control information, the switch controller controls the switching unit such that the terminal unit is connected to the antenna.