# US 2019/0380146 A1 · Device for communicating according to a first and second communication standard > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0380146 A1 - Document ID: US20190380146A1 - Status: Published application - Kind: A1 - Application number: 16/429,876 - Filed: 2019-06-03 - Published: 2019-12-12 - Earliest claimed: 2018-06-08 - Assignees: Kapsch TrafficCom AG - Applicants: Kapsch TrafficCom AG - Inventors: Dieter Smely - Web page: https://patentgrep.com/patent/US20190380146A1 ## CPC - H04L 49/1584: {Full Mesh, e.g. knockout} - H04W 74/0808: using carrier sensing, e.g. carrier sense multiple access [CSMA] - H04W 74/04: Scheduled access (hybrid access H04W74/02) - H04W 84/042: {Public Land Mobile systems, e.g. cellular systems} - H04W 84/18: Self-organising networks, e.g. ad-hoc networks or sensor networks - H04W 88/06: adapted for operation in multiple networks {or having at least two operational modes}, e.g. multi-mode terminals - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract A device is disclosed for communicating according to a first and a second communication standard, the first standard being a standard using carrier-sense multiple access (CSMA) and the second being an LTE standard, the LTE standard comprising a device-to-device functionality, wherein the device communicates according to the first standard as well as according to the second standard in the same frequency channel, broadcasts a channel reservation message in said frequency channel, the channel reservation message indicating a length for communications according to the second standard such that no communications according to the first standard are performed over said length, and communicates according to the second standard over said length indicated in the channel reservation message. A method for communicating according to a first and a second communication standard is also disclosed. ## Claims ### Claim 1 A device for communicating according to a first and a second communication standard, the first standard being a standard using Carrier-Sense Multiple Access and the second standard being a standard using a synchronous Time Division Multiplex Access and a device-to-device functionality, wherein the device is a node of an ad-hoc network and configured to communicate within said ad-hoc network according to the first standard, and wherein the device is configured to communicate with at least one further device according to the second standard, and wherein the device is further configured to communicate according to the first standard as well as according to the second standard in the same frequency channel, broadcast a channel reservation message having a format according to the first standard and indicating at least a length of a communication time slot for communications according to the second standard such that no communications according to the first standard are performed over said length, and communicate according to the second standard with said at least one further device over said length indicated in the channel reservation message. ### Claim 2 (depends on 1) The device according to claim 1, wherein the channel reservation message further indicates a starting or end point in time for said length, and said starting or end point in time being at a predetermined time interval after the end of the channel reservation message. ### Claim 3 (depends on 2) The device according to claim 2, wherein the channel reservation message also indicates at least one second length of a communication time slot for communications according to the second standard such that no communications according to the first standard are performed over said length as well as said at least one second length. ### Claim 4 (depends on 1) The device according to claim 1, wherein said communication time slot lies within the channel reservation message. ### Claim 5 (depends on 4) The device according to claim 4, wherein the channel reservation message has a preamble field, a signal field, and a data field, and wherein the length is indicated in the signal field and is comprised by the data field. ### Claim 6 (depends on 4) The device according to claim 4, wherein the device is configured to broadcast a further channel reservation message before broadcasting said channel reservation message to indicate the starting time of said channel reservation message. ### Claim 7 (depends on 1) The device according to claim 1, wherein the device is configured to broadcast the channel reservation message in said frequency channel. ### Claim 8 (depends on 1) The device according to claim 1, wherein the first standard is an IEEE (Institute of Electrical and Electronics Engineers) 802.11 standard, an ETSI (European Telecommunications Standard Institute) EN 302 663 standard, an ITS-G5 (Intelligent Transport System) standard, or a WAVE DSRC (Wireless Access in Vehicular Environments—Dedicated Short Range Communication) standard. ### Claim 9 (depends on 1) The device according to claim 1, wherein the second standard is Release 14 or higher of LTE (Long Term Evolution). ### Claim 10 A method for communicating according to a first and a second communication standard by means of a device, the first standard being a standard using Carrier-Sense Multiple Access and the second standard being a standard using a synchronous Time Division Multiplex Access and a device-to-device functionality, wherein the device is a node of an ad-hoc network and communicates within said ad-hoc network according to the first standard, and wherein the device communicates with at least one further device according to the second standard, the method comprising the following steps performed in the device: communicating according to the first standard as well as according to the second standard in the same frequency channel; broadcasting a channel reservation message in said frequency channel, the channel reservation message having a format according to the first standard and indicating at least a length of a communication time slot for communications according to the second standard such that no communications according to the first standard are performed over said length; and communicating according to the second standard with said at least one further device over said length indicated in the channel reservation message. ### Claim 11 (depends on 10) The method according to claim 10, wherein the channel reservation message further indicates a starting or end point in time for said length, and said starting or endpoint in time being at a predetermined time interval after the end of the channel reservation message. ### Claim 12 (depends on 11) The method according to claim 11, wherein the channel reservation message also indicates at least one second length of a communication time slot for communications according to the second standard such that no communications according to the first standard are performed over said length as well as said at least one second length. ### Claim 13 (depends on 10) The method according to claim 10, wherein said communication time slot lies within the channel reservation message. ### Claim 14 (depends on 13) The method according to claim 13, wherein the channel reservation message has a preamble field, a signal field, and a data field, and wherein the length is indicated in the signal field and is comprised by the data field. ### Claim 15 (depends on 13) The method according to claim 13, wherein the device broadcasts a further channel reservation message before broadcasting said channel reservation message to indicate the starting time of said channel reservation message. ### Claim 16 (depends on 10) The method according to claim 10, wherein the device broadcasts the channel reservation message in said frequency channel. ### Claim 17 (depends on 10) The method according to claim 10, wherein the first standard is an IEEE (Institute of Electrical and Electronics Engineers) 802.11 standard, an ETSI (European Telecommunications Standard Institute) EN 302 663 standard, an ITS-G5 (Intelligent Transport System) standard, or a WAVE DSRC (Wireless Access in Vehicular Environments—Dedicated Short Range Communication) standard.