# US 2014/0194156 A1 · Communication device, communication system, 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 2014/0194156 A1 - Document ID: US20140194156A1 - Status: Published application - Kind: A1 - Application number: 14/119,250 - Filed: 2012-07-06 - Published: 2014-07-10 - Earliest claimed: 2011-07-07 - Assignees: Yokogawa Electric Corporation - Applicants: Yokogawa Electric Corporation - Inventors: Hua Jun Chen - Web page: https://patentgrep.com/patent/US20140194156A1 ## CPC - H04W 88/06: adapted for operation in multiple networks {or having at least two operational modes}, e.g. multi-mode terminals - H04W 48/18: Selecting a network or a communication service - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract A communication device, in which the OSI reference model physical layer and data-link layer perform wireless communication via at least one of a first wireless network conforming to a first wireless communication standard and a second wireless network conforming to a second wireless communication standard, may include an identification control unit, provided in the data-link layer, that identifies that data, which is received in the physical layer, based on the identification information included in the data, is to be transmitted via either the first wireless network or the second wireless network, the identification control unit controlling so as to transmit, based on the identification result, the data via the first wireless network or the second wireless network. ## Claims ### Claim 1 A communication device in which the OSI reference model physical layer and data-link layer perform wireless communication via at least one of a first wireless network conforming to a first wireless communication standard and a second wireless network conforming to a second wireless communication standard, the communication device comprising: an identification control unit, provided in the data-link layer, that identifies that data, which is received in the physical layer, based on the identification information included in the data, is to be transmitted via either the first wireless network or the second wireless network, the identification control unit controlling so as to transmit, based on the identification result, the data via the first wireless network or the second wireless network. ### Claim 2 (depends on 1) The communication device according to claim 1, wherein, if the data is received via the first wireless network, the identification control unit appends to the data a first identification information to the effect that the data is to be transmitted via the first wireless network, and if the data is received via the second wireless network, the identification control unit appends to the data a second identification information to the effect that the data is to be transmitted via the second wireless network. ### Claim 3 (depends on 1) The communication device according to claim 1, further comprising: a first path control unit that performs first path control in the first wireless network; and a second path control unit that performs second path control in the second wireless network, wherein if identification is made that the data is to be transmitted via the first wireless network, the identification control unit passes the data to the first path control unit, and if identification is made that the data is to be transmitted via the second wireless network, the identification control unit passes the data to the second path control unit. ### Claim 4 (depends on 3) The communication device according to claim 3, further comprising: a first transfer control unit that performs first transfer control of the data in the first wireless network in accordance with the first path control performed by the first path control unit; and a second transfer control unit that performs second transfer control of the data in the second wireless network in accordance with the second path control performed by the second path control unit. ### Claim 5 (depends on 4) The communication device according to claim 4, wherein the first path control unit and the second path control unit are provided in a network layer of the OSI reference model, and the first transfer control unit and the second transfer control unit are provided in a transport layer of the OSI reference model. ### Claim 6 (depends on 1) The communication device according to claim 1, wherein one of the first wireless communication standard and the second wireless communication standard is ISA100, and the other is WirelessHART. ### Claim 7 (depends on 1) The communication device according to claim 1, wherein the identification information is a value of frame version included in an MHR (MAC Header) of the data. ### Claim 8 A communication system comprising a plurality of communication devices wherein the OSI reference model physical layer and data-link layer perform wireless communication via at least one of a first wireless network conforming to a first wireless communication standard and a second wireless network conforming to a second wireless communication standard, wherein at least one of the communication devices comprises: an identification control unit, provided in the data-link layer, that identifies that data, which is received in the physical layer, based on the identification information included in the data, is to be transmitted via either the first wireless network or the second wireless network, the identification control unit controlling so as to transmit, based on the identification result, the data via the first wireless network or the second wireless network. ### Claim 9 (depends on 8) The communication system according to claim 8, wherein, if the data is received via the first wireless network, the identification control unit appends to the data a first identification information to the effect that the data is to be transmitted via the first wireless network, and if the data is received via the second wireless network, the identification control unit appends to the data a second identification information to the effect that the data is to be transmitted via the second wireless network. ### Claim 10 (depends on 8) The communication system according to claim 8, wherein at least one of the communication devices further comprises: a first path control unit that performs first path control in the first wireless network; and a second path control unit that performs second path control in the second wireless network, wherein if identification is made that the data is to be transmitted via the first wireless network, the identification control unit passes the data to the first path control unit, and if identification is made that the data is to be transmitted via the second wireless network, the identification control unit passes the data to the second path control unit. ### Claim 11 (depends on 10) The communication system according to claim 10, wherein at least one of the communication devices further comprises: a first transfer control unit that performs first transfer control of the data in the first wireless network in accordance with the first path control performed by the first path control unit; and a second transfer control unit that performs second transfer control of the data in the second wireless network in accordance with the second path control performed by the second path control unit. ### Claim 12 (depends on 11) The communication system according to claim 11, wherein the first path control unit and the second path control unit are provided in a network layer of the OSI reference model, and the first transfer control unit and the second transfer control unit are provided in a transport layer of the OSI reference model. ### Claim 13 (depends on 8) The communication system according to claim 8, wherein one of the first wireless communication standard and the second wireless communication standard is ISA100, and the other is WirelessHART. ### Claim 14 (depends on 8) The communication system according to claim 8, wherein the identification information is a value of frame version included in an MHR (MAC Header) of the data. ### Claim 15 A communication method wherein the OSI reference model physical layer and data-link layer perform wireless communication via at least one of a first wireless network conforming to a first wireless communication standard and a second wireless network conforming to a second wireless communication standard, the communication method comprising: identifying that data received in the physical layer, based on the identification information included in the data, is to be transmitted via either the first wireless network or the second wireless network; and transmitting, based on the identification result, the data via the first wireless network or the second wireless network. ### Claim 16 (depends on 15) The communication method according to claim 15, further comprising: receiving data via at least one of the first wireless network and the second wireless network; appending to the data a first identification information to the effect that the data is to be transmitted via the first wireless network if the data is received via the first wireless network; and appending to the data a second identification information to the effect that the data is to be transmitted via the second wireless network if the data is received via the second wireless network. ### Claim 17 (depends on 15) The communication method according to claim 15, wherein one of the first wireless communication standard and the second wireless communication standard is ISA100, and the other is WirelessHART. ### Claim 18 (depends on 15) The communication method according to claim 15, wherein the identification information is a value of frame version included in an MHR (MAC Header) of the data. ### Claim 19 A method for identifying data in a communication device wherein the OSI reference model physical layer and data-link layer perform wireless communication via at least one of a first wireless network conforming to a first wireless communication standard and a second wireless network conforming to a second wireless communication standard, the method for identifying data comprising: identifying a value of frame version included in an MHR (MAC Header) of data received in the physical layer; transmitting the data via the first wireless network, as a result of the identification, if the value of the frame version is a first value; and transmitting the data via the second wireless network, as a result of the identification, if the value of the frame version is a second value. ### Claim 20 (depends on 19) The method for identifying data according to claim 19, wherein one of the first wireless communication standard and the second wireless communication standard is ISA100, and the other is WirelessHART.