MULTICASTING SYSTEM AND METHOD FOR VEHICULAR COMMUNICATION NETWORK
First Claim
1. A multicasting system for a vehicular communication network, comprising a plurality of roadside communication devices for communicating with a plurality of vehicular communication devices, wherein each of the roadside communication devices comprises:
- a communication unit for communicating with the plurality of vehicular communication devices and at least one neighboring roadside communication device;
a beacon analysis unit for analyzing beacon frames from the corresponding roadside communication device and the at least one neighboring roadside communication device when a slot allocation request is received from one of the vehicular communication devices;
a determination unit for searching for a period in which a slot has not been allocated by the corresponding roadside communication device and the at least one neighboring roadside communication device and determining whether a period for allocation of a slot to the vehicular communication device is present; and
a slot allocation unit for allocating a slot period for multicasting of the vehicular communication device based on results of the determination of the determination unit.
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Accused Products
Abstract
Disclosed herein are a multicasting system and method for a vehicular communication network. The multicasting system includes a plurality of roadside communication devices for communicating with a plurality of vehicular communication devices. Each of the roadside communication devices includes a communication unit for communicating with the plurality of vehicular communication devices and at least one neighboring roadside communication device, a beacon analysis unit for analyzing beacon frames when a slot allocation request is received from one of the vehicular communication devices, a determination unit for searching for a period in which a slot has not been allocated and determining whether a period for allocation of a slot to the vehicular communication device is present, and a slot allocation unit for allocating a slot period for multicasting of the vehicular communication device based on results of the determination of the determination unit.
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Citations
16 Claims
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1. A multicasting system for a vehicular communication network, comprising a plurality of roadside communication devices for communicating with a plurality of vehicular communication devices, wherein each of the roadside communication devices comprises:
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a communication unit for communicating with the plurality of vehicular communication devices and at least one neighboring roadside communication device; a beacon analysis unit for analyzing beacon frames from the corresponding roadside communication device and the at least one neighboring roadside communication device when a slot allocation request is received from one of the vehicular communication devices; a determination unit for searching for a period in which a slot has not been allocated by the corresponding roadside communication device and the at least one neighboring roadside communication device and determining whether a period for allocation of a slot to the vehicular communication device is present; and a slot allocation unit for allocating a slot period for multicasting of the vehicular communication device based on results of the determination of the determination unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A multicasting method for a vehicular communication network, comprising a plurality of roadside communication devices for communicating with a plurality of vehicular communication devices, the method comprising, by each of the roadside communication devices:
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receiving a beacon frame from at least one neighboring roadside communication device when a slot allocation request is received from each of the vehicular communication devices; analyzing beacon frames received from the corresponding roadside communication device and the at least one neighboring roadside communication device; searching for a period in which a slot has not been allocated by the corresponding roadside communication device and the at least one neighboring roadside communication device; and allocating a slot period for multicasting of the vehicular communication device based on results of the searching of the determination unit. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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Specification