Communication apparatus and method

Multiplex communications – Wide area network – Packet switching

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Details

370 856, 370 858, H04L 12413

Patent

active

055530729

ABSTRACT:
An apparatus and method for media access control of a first node in a network on a powerline communication medium. The apparatus includes a priority controller for providing a transmit authorization signal. The authorization signal can be responsive to a unique priority of the first node in relation to other nodes in the network, with the priority controller receiving the node's priority from a node network controller in the first node. The apparatus includes an access controller for receiving the transmit authorization signal and, in response, communicating a transmit request signal to the node network controller. The apparatus also includes an arbitration controller for preventing the node from transmitting to the network until a predetermined number of other nodes have been allowed to precedentially access the network. The arbitration controller responds to the priority controller, and sends a transmit inhibition signal to the access controller, inhibiting node transmission irrespective of the authorization signal. The invention also provides a method for communication by a first node in a network having a plurality of nodes, including the steps of sensing a powerline communication medium for the presence of a carrier signal by the first node; inhibiting transmitting by the first node to the network if the presence of the carrier signal is sensed; and transmitting at least one data packet, if the carrier signal is not sensed on the network and the current priority period corresponds with a first predetermined priority period.

REFERENCES:
patent: 3818447 (1974-06-01), Craft
patent: 4332027 (1982-05-01), Malcolm et al.
patent: 4466096 (1984-08-01), Heins et al.
patent: 4494113 (1985-01-01), Yamaoka et al.
patent: 4536875 (1985-08-01), Kume et al.
patent: 4611274 (1986-09-01), Machino et al.
patent: 5090024 (1992-02-01), Vander Mey et al.
"Multiaccess Protocols in Packet Communication Systems" by F. A. Tobagi, IEEE Transactions on Communications, Apr. 1980, vol. COM-28, No. 4. pp. 468-488.

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