# US 12,120,661 B2 · Accessing a communication channel using disparate communication systems > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,120,661 B2 - Document ID: US12120661B2 - Status: Granted - Kind: B2 - Application number: 17/420,459 - Filed: 2020-01-03 - Published: 2022-03-17 - Granted: 2024-10-15 - Earliest claimed: 2019-01-04 - Assignees: Apple Inc. - Applicants: Apple Inc. - Inventors: Ying He; Markus Dominik Mueck; Leonardo Gomes Baltar; Mustafa Emara; Miltiadis Filippou; Ren Ping Liu; Dinh Thai Hoang; Diep Nguyen; Eryk Dutkiewicz; Srikanteswara Srikathyayani - Web page: https://patentgrep.com/patent/US12120661B2 ## CPC - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04W 72/1215: {for collaboration of different radio technologies} - H04W 4/40: for vehicles, e.g. vehicle-to-pedestrians [V2P] - H04W 72/535: {based on resource usage policies} - H04W 74/0808: using carrier sensing, e.g. carrier sense multiple access [CSMA] - H04W 16/14: Spectrum sharing arrangements {between different networks} - H04W 88/06: adapted for operation in multiple networks {or having at least two operational modes}, e.g. multi-mode terminals - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract Some embodiments of this disclosure include apparatuses and methods for accessing a communication frequency channel by a first communication system during a first time interval, and accessing the communication frequency channel by a second communication system during a second time interval adjacent to the first time interval. The first communication system communicates using cellular communication techniques, and the second communication system communicates using IEEE 802.11 based communication techniques. ## Claims ### Claim 1 An apparatus for providing vehicle-to-everything (V2X) communications, comprising: a first communication system configured to access a communication frequency channel during a first time interval; and a second communication system configured to access the communication frequency channel during a second time interval adjacent to the first time interval, the second communication system configured to initialize a counter for accessing the communication frequency channel and to freeze a countdown of the counter during a time interval designated for the first communication system; wherein the first communication system is configured to communicate using cellular based communication, and the second communication system is configured to communicate using an Institute of Electrical and Electronics Engineers (IEEE) 802.11 based communication. ### Claim 2 (depends on 1) The apparatus of claim 1, wherein the first communication system is configured to communicate cellular communication signals during the first time interval, and the second communication system is configured to communicate IEEE 802.11 based communication signals during the second time interval. ### Claim 3 (depends on 1) The apparatus of claim 1, wherein the first communication system is configured to communicate during a first set of time intervals and the second communication system is configured to communicate during a second set of time intervals, wherein the first set of time intervals alternates with the second set of time intervals such that each time interval from the first set of time intervals is adjacent to a time interval from the second set of time intervals, and wherein the first time interval is included in the first set of time intervals, and the second time interval is included in the second set of time intervals. ### Claim 4 (depends on 1) The apparatus of claim 1, wherein the first communication system is an LTE C-V2X communication system, and the second communication system is an IEEE 802.11 based DSRC or ITS-GS communication system. ### Claim 5 (depends on 1) The apparatus of claim 1, wherein the first time interval is a predetermined, fixed time slot dedicated to the first communication system, and the second time interval is a predetermined, fixed time slot dedicated to the second communication system. ### Claim 6 (depends on 1) The apparatus of claim 1, wherein the first time interval and the second time interval are predetermined based at least in part on a level of usage of cellular communications and IEEE 802.11 based communications in a geographic area proximate to the apparatus. ### Claim 7 (depends on 6) The apparatus of claim 6, wherein the level of usage of cellular communications and IEEE 802.11 based communications is determined based at least in part on a plurality of resource requests from a plurality of users in the geographic area proximate to the apparatus. ### Claim 8 (depends on 6) The apparatus of claim 6, wherein the level of usage of cellular communications and IEEE 802.11 based communications is determined based at least in part on historical communication usage of the geographic area proximate to the apparatus. ### Claim 9 (depends on 1) The apparatus of claim 1, further configured to receive a reservation request message and to identify a start of the first time interval based at least in part on the reservation request message. ### Claim 10 (depends on 1) The apparatus of claim 1, wherein the first communication system is configured to: sense that the communication frequency channel is vacant; and access the communication frequency channel in response to sensing that the communication frequency channel is vacant; wherein the first time interval begins when the first communication system senses that the communication frequency channel is vacant. ### Claim 11 (depends on 1) The apparatus of claim 1, wherein the first time interval and the second time interval are separated by a pause period. ### Claim 12 (depends on 11) The apparatus of claim 11, wherein the pause period is reduced for ultra-high priority communications. ### Claim 13 A method of providing vehicle-to-everything (V2X) communications, the method comprising: accessing, by a first communication system, a communication frequency channel during a first time interval using cellular communication; accessing, by a second communication system, the communication frequency channel during a second time interval using an Institute of Electrical and Electronics Engineers (IEEE) 802.11 based communication; initializing, by the second communication system, a counter for accessing the communication frequency channel; and freezing, by the second communication system, a countdown of the counter during a time interval designated for the first communication system; wherein the first time interval is adjacent to the second time interval. ### Claim 14 (depends on 13) The method of claim 13, wherein the first communication system is configured to communicate cellular communication signals during the first time interval, and the second communication system is configured to communicate IEEE 802.11 based communication signals during the second time interval. ### Claim 15 (depends on 13) The method of claim 13, wherein the first communication system is configured to communicate during a first set of time intervals and the second communication system is configured to communicate during a second set of time intervals, wherein the first set of time intervals alternate with the second set of time intervals, wherein the first set of time intervals alternates with the second set of time intervals such that each time interval from the first set of time intervals is adjacent to a time interval from the second set of time intervals, and wherein the first time interval is included in the first set of time intervals, and the second time interval is included in the second set of time intervals. ### Claim 16 (depends on 13) The method of claim 13, wherein the first communication system is an LTE C-V2X communication system, and the second communication system is an IEEE 802.11 based DSRC or ITS-GS communication system. ### Claim 17 One or more non-transitory computer-readable media (CRM) comprising instructions, wherein execution of the instructions by one or more processors of an apparatus, causes the apparatus to: access, by a first communication system, a communication frequency channel during a first time interval using cellular vehicle-to-everything (V2X) communication; access, by a second communication system, the communication frequency channel during a second time interval using an Institute of Electrical and Electronics Engineers (IEEE) 802.11 based V2X communication; initialize, by the second communication system, a counter for accessing the communication frequency channel; and freeze, by the second communication system, a countdown of the counter during a time interval designated for the first communication system; wherein the first time interval is adjacent to the second time interval. ### Claim 18 (depends on 17) The one or more non-transitory CRM of claim 17, wherein the first time interval is a predetermined, fixed time slot dedicated to the first communication system, and the second time interval is a predetermined, fixed time slot dedicated to the second communication system. ### Claim 19 (depends on 17) The one or more non-transitory CRM of claim 17, wherein the first time interval and the second time interval are predetermined based at least in part on a level of usage of cellular communications and IEEE 802.11 based communications in a geographic area proximate to the first and second communication systems. ### Claim 20 (depends on 17) The one or more non-transitory CRM of claim 17, wherein the instructions further cause the apparatus to: sense that the communication frequency channel is vacant; and access, by the first communication system, the communication frequency channel in response to sensing that the communication frequency channel is vacant; wherein the first time interval begins when the first communication system senses that the communication frequency channel is vacant.