# US 2014/0192765 A1 · Communication device, communication method, and recording medium > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0192765 A1 - Document ID: US20140192765A1 - Status: Published application - Kind: A1 - Application number: 14/240,313 - Filed: 2012-06-29 - Published: 2014-07-10 - Earliest claimed: 2011-08-24 - Assignees: NEC Corporation - Inventors: Takeshi Yamamoto - Web page: https://patentgrep.com/patent/US20140192765A1 ## CPC - H04W 40/02: Communication route or path selection, e.g. power-based or shortest path routing - H04W 40/12: based on transmission quality or channel quality - H04W 72/02: Selection of wireless resources by user or terminal - H04W 72/20: Control channels or signalling for resource management - H04W 84/18: Self-organising networks, e.g. ad-hoc networks or sensor networks - H04W 88/04: adapted for relaying to or from another terminal or user - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract Provided are a communication device, a communication method, and a recording medium that can reduce concentration of a load on one of wireless channels. A communication device that uses wireless channels includes: acceptance means for accepting, from a different communication device and through one of the wireless channels, channel information that indicates wireless channels that can be used by the different communication device; control means for selecting, as a wireless forwarding channel for first information, a wireless channel, which is different from a wireless transmission channel for transmitting the first information, from among the wireless channels that are indicated by the channel information, and for adding second information indicating the wireless forwarding channel to the first information; and transmission means for transmitting the first information provided with the second information by using the wireless transmission channel. ## Claims ### Claim 1 A communication device that uses wireless channels, the communication device comprising: an acceptance unit accepting, from a different communication device and through one of the wireless channels, channel information that indicates wireless channels that can be used by the different communication device; a control unit selecting, as a wireless forwarding channel for first information, a wireless channel which is different from a wireless transmission channel for transmitting the first information, from among the wireless channels that are indicated by the channel information, and for adding second information indicating the wireless forwarding channel to the first information; and a transmission unit transmitting the first information provided with the second information by using the wireless transmission channel. ### Claim 2 (depends on 1) The communication device according to claim 1, wherein the different communication device is a communication device that communicates by one hop with the device. ### Claim 3 (depends on 1) The communication device according to claim 1, wherein when said acceptance unit accepts the channel information of different communication devices, said control unit selects, as the wireless forwarding channel, a wireless channel the number of which indicated by the channel information is the largest, from among the wireless channels, which are different from the wireless transmission channel, that are present among the wireless channels indicated by the channel information. ### Claim 4 (depends on 3) The communication device according to claim 3, wherein said acceptance unit further accepts, from each of the different communication devices through one of the wireless channels, position information indicating a position of each different communication device, and when the first information is to be transmitted to a predetermined transmission area, said control unit specifies, as target communication devices, a communication device whose position indicated by the position information is in the predetermined transmission area, and a communication device whose position indicated by the position information is in an area between the device and the predetermined transmission area, from among the different communication devices, and selects a wireless channel different from the wireless transmission channel as the wireless forwarding channel, from among the wireless channels indicated by the channel information received from the target communication devices. ### Claim 5 (depends on 1) The communication device according to claim 1 4, wherein the wireless transmission channel is preset. ### Claim 6 (depends on 1) The communication device according to claim 1 4, further comprising a detection unit detecting a degree of congestion of each of the wireless channels of the device, wherein said control unit selects the wireless transmission channel based on the degrees of congestion of the wireless channels of the device. ### Claim 7 A communication device that uses wireless channels, the communication device comprising: a reception unit receiving first information provided with second information indicating a wireless forwarding channel from a communication device through wireless transmission channel; and a forwarding unit forwarding the first information provided with the second information to a forwarding destination by using the wireless forwarding channel indicated by the second information. ### Claim 8 A communication device that uses wireless channels, the communication device comprising: an acceptance unit accepting, from a different communication device and through one of the wireless channels, channel information that indicates wireless channels that can be used by the different communication device; a control unit, when forwarding information, which is provided with transmission channel information indicating a wireless transmission channel used by a transmission source, is received through one of the wireless channels, selecting, as a wireless forwarding channel to be used to forward the forwarding information, a wireless channel that is different from the wireless transmission channel from among the wireless channels of the device, based on the wireless channels indicated by the channel information; and a transmission unit forwarding the forwarding information to a forwarding destination by using the wireless forwarding channel. ### Claim 9 (depends on 8) The communication device according to claim 8, wherein the different communication device is a communication device that communicates by one hop with the device. ### Claim 10 (depends on 8) The communication device according to claim 8, wherein said acceptance unit accepts each channel information from each different communication device, and said control unit selects, as the wireless forwarding channel, a wireless channel, the number of which indicated by the channel information is the largest, from among the wireless channels different from the wireless transmission channel among the wireless channels of the device. ### Claim 11 (depends on 8) The communication device according to claim 8, further comprising a detection unit detecting a degree of congestion of each of the wireless channels of the device, wherein said control unit selects, as the wireless forwarding channel, a wireless channel different from the wireless transmission channel, from among the wireless channels of the device, based on the degrees of congestion of the wireless channels of the device and the wireless channels indicated by the channel information. ### Claim 12 A communication method in a communication device that uses wireless channels, the communication method comprising: accepting, from a different communication device and through one of the wireless channels, channel information that indicates wireless channels that can be used by the different communication device; selecting, as a wireless forwarding channel for first information, a wireless channel, which is different from a wireless transmission channel for transmitting the first information, from among the wireless channels that are indicated by the channel information, and adding second information that indicates the wireless forwarding channel to the first information; and transmitting the first information provided with the second information by using the wireless transmission channel. ### Claim 13 A communication method in a communication device that uses wireless channels, the communication method comprising: accepting, from a different communication device and through one of the wireless channels, channel information that indicates wireless channels that can be used by the different communication device; when forwarding information, which is provided with transmission channel information indicating a wireless transmission channel used by a transmission source, is received through one of the wireless channels, selecting, as a wireless forwarding channel to be used to forward the forwarding information, a wireless channel that is different from the wireless transmission channel from among the wireless channels of the device, based on the wireless channels indicated by the channel information; and forwarding the forwarding information to a forwarding destination by using the wireless channel for forwarding. ### Claim 14 A non-transitory computer-readable recording medium recording a program for causing a computer that uses wireless channels to execute: an acceptance procedure of accepting, from a different communication device and through one of the wireless channels, channel information that indicates wireless channels that can be used by the different communication device; a control procedure of selecting, as a wireless forwarding channel for first information, a wireless channel, which is different from a wireless transmission channel for transmitting the first information, from among the wireless channels that are indicated by the channel information, and of adding second information that indicates the wireless forwarding channel to the first information; and a transmission procedure of transmitting the first information provided with the second information by using the wireless transmission channel. ### Claim 15 A non-transitory computer-readable recording medium recording a program for causing a computer that uses wireless channels to execute: an acceptance procedure of accepting, from a different communication device and through one of the wireless channels, channel information that indicates wireless channels that can be used by the different communication device; a control procedure of, when forwarding information, which is provided with transmission channel information indicating a wireless transmission channel used by a transmission source, is received through one of the wireless channels, selecting, as a wireless forwarding channel to be used to forward the forwarding information, a wireless channel that is different from the wireless transmission channel from among the wireless channels of the device, based on the wireless channels indicated by the channel information; and a transmission procedure of forwarding the forwarding information to a forwarding destination by using the wireless forwarding channel.