SYSTEM AND METHOD OF VEHICULAR WIRELESS COMMUNICATION USING AN INTEGRATED COORDINATING ACCESS POINT
First Claim
1. A method of vehicular wireless communication over a Dedicated Short Range Communication service band using an integrated coordinating access point, said method comprising the steps of:
- dividing the service band into a control channel for transmitting a safety communication, and a service channel for transmitting a non-safety communication;
defining an integrated coordinating access point that is both a coordinating access point and a service access point that transmits and receives non-safety communications, and the integrated coordinating access point operates on both the control channel and the service channel;
subdividing the control channel into intervals of time, wherein one interval is a safety exchange interval in a contention-free period of time and each registered vehicle transmits a safety communication at predetermined time during the safety exchange interval, and the predetermined time is determined by the integrated coordinating access point;
determining if the vehicle is within communications range of an integrated coordinating access point service region;
determining if the vehicle is registered with the integrated coordinating access point, if the vehicle is within the communications range of the integrated coordinating access point, wherein the integrated coordinating access point maintains a list of registered vehicles, and registering the vehicle with the integrated coordinating access point if not registered;
determining if a current time is within the safety exchange interval in the contention-free period of time in the control channel, and transmitting the safety communication by each registered vehicle during the safety exchange interval at the predetermined time for each registered vehicle, if the current time is within the safety exchange interval of the contention-free period;
determining if the safety communication exchange by every registered vehicle is completed, and permitting the vehicle to leave the control channel if the safety communication exchange is complete; and
determining if a current time is within a contention period and transmitting the non-safety communication if the current time is within the contention period.
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Accused Products
Abstract
A system and method of vehicular wireless communication over a Dedicated Short Range Communication service band is provided. The system includes a vehicle having a navigation means, a processor, and a communication means for transmitting a message via a wireless communications link. The system includes a control channel for communicating a safety communication and a service channel for communicating a non-safety communication. The control channel is subdivided into a contention-free period having a group management interval, a service announcement interval and a safety exchange interval and a contention period having a non-safety service interval. The system further includes an integrated coordinating access point that operates in both the control channel and service channel. The method includes the steps of determining if the vehicle is within communications range of the region, determining if the vehicle is registered with the access point, and if the vehicle is within the communications range of integrated coordinating access point, determining if a current time is within the safety exchange interval, and transmitting the safety communication by each registered vehicle during the safety exchange interval at the predetermined time for each registered vehicle. The method further includes the steps of determining if the safety communication exchange by every registered vehicle is completed, and permitting the vehicle to leave the control channel if the safety communication exchange is complete, and determining if a current time is within a contention period, and transmitting the non-safety communication if the current time is within the contention period.
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Citations
19 Claims
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1. A method of vehicular wireless communication over a Dedicated Short Range Communication service band using an integrated coordinating access point, said method comprising the steps of:
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dividing the service band into a control channel for transmitting a safety communication, and a service channel for transmitting a non-safety communication; defining an integrated coordinating access point that is both a coordinating access point and a service access point that transmits and receives non-safety communications, and the integrated coordinating access point operates on both the control channel and the service channel; subdividing the control channel into intervals of time, wherein one interval is a safety exchange interval in a contention-free period of time and each registered vehicle transmits a safety communication at predetermined time during the safety exchange interval, and the predetermined time is determined by the integrated coordinating access point; determining if the vehicle is within communications range of an integrated coordinating access point service region; determining if the vehicle is registered with the integrated coordinating access point, if the vehicle is within the communications range of the integrated coordinating access point, wherein the integrated coordinating access point maintains a list of registered vehicles, and registering the vehicle with the integrated coordinating access point if not registered; determining if a current time is within the safety exchange interval in the contention-free period of time in the control channel, and transmitting the safety communication by each registered vehicle during the safety exchange interval at the predetermined time for each registered vehicle, if the current time is within the safety exchange interval of the contention-free period; determining if the safety communication exchange by every registered vehicle is completed, and permitting the vehicle to leave the control channel if the safety communication exchange is complete; and determining if a current time is within a contention period and transmitting the non-safety communication if the current time is within the contention period. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An system of vehicular wireless communication over a Dedicated Short Range Communication service band using an integrated coordinating access point within a region comprising:
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a navigation means on the vehicle that is in communication with a global positioning system which includes a global positioning transceiver associated with the vehicle, and a global positioning signal transmitter in communication with the vehicle global positioning transceiver; a processor on the vehicle that is in communication with said navigation means; an input means in communication with said processor; a user notification device operatively in communication with said navigation means for providing information to a vehicle operator; a user manual input mechanism operatively in communication with said navigation means transmitting information from the vehicle operator; a communication means operatively in communication with said navigation means for transmitting a message over a channel on the Dedicated Short Range Communication service band via a wireless communications link, wherein the channel is divided into a control channel for communicating a safety communication and a service channel for communicating a non-safety communication, and the control channel is further subdivided into a contention-free period and a contention period, and the contention-free period and is subdivided into a group management interval, a service announcement interval and a safety exchange interval of time and the contention period is subdivided into a non-safety service interval of time; an integrated coordinating access point operatively in communication with the vehicle via said communications link within the integrated coordinating access point region, wherein the integrated coordinating access point service region is a geographic area containing the integrated coordinating access point and said integrated coordinating access point determines the predetermined time for each registered vehicle on a registration list maintained by the integrated coordinating access point within communications range of the access point to transmit a safety communication during the safety exchange interval. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A method of vehicular wireless communication over a Dedicated Short Range Communication service band using an integrated coordinating access point, said method comprising the steps of:
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dividing the service band into a control channel for transmitting a safety communication, and a service channel for transmitting a non-safety communication; defining an integrated coordinating access point that is both a coordinating access point and a service access point that transmits and receives non-safety communications, and the integrated coordinating access point operates on both the control channel and the service channel; subdividing the control channel into intervals of time, wherein one interval is a safety exchange interval in a contention-free period of time and each registered vehicle transmits a safety communication at predetermined time during the safety exchange interval, and the predetermined time is determined by the integrated coordinating access point; defining a group management interval and a service announcement interval within the contention-free period wherein the integrated coordinated access point communicates the available services during the service announcement interval of the contention-free period; defining a non-safety services interval in the service channel within a contention period wherein the integrated coordinating access point provides services on the service channel during the contention period; determining if the vehicle is within communications range of an integrated coordinating access point service region; determining if the vehicle is registered with the integrated coordinating access point, if the vehicle is within the communications range of the integrated coordinating access point, wherein the integrated coordinating access point maintains a list of registered vehicles, and registering the vehicle with the integrated coordinating access point if not registered; determining if a current time is within the safety exchange interval in the contention-free period of time in the control channel, and transmitting the safety communication by each registered vehicle during the safety exchange interval at the predetermined time for each registered vehicle, if the current time is within the safety exchange interval of the contention-free period; determining if the safety communication exchange by every registered vehicle is completed, and permitting the vehicle to leave the control channel if the safety communication exchange is complete; and determining if a current time is within a contention period, and transmitting the non-safety communication if the current time is within the contention period. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification