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A communications protocol that is used in a network having a hub device connected to a plurality of peripheral devices includes a synchronization beacon frame that is broadcast by the hub device to the peripheral devices for permitting the peripheral devices to synchronize to the network, a token fr

A communications protocol that is used in a network having a hub device connected to a plurality of peripheral devices includes a synchronization beacon frame that is broadcast by the hub device to the peripheral devices for permitting the peripheral devices to synchronize to the network, a token frame that is broadcast by the hub device to the peripheral devices for allocating network bandwidth among the peripheral devices, a status response frame that is transmitted by the peripheral devices to the hub device for indicating whether the peripheral devices have data to transmit to the hub device, and a data frame. The synchronization beacon frame includes a beacon identifier that identifies a frame as the synchronization beacon frame, and a hub identifier that identifies an address of the hub device. The token frame includes a data portion that schedules a data transmission on the network, and a status response portion that schedules a status response transmission on the network. The status response frame includes a data transmission field that indicates whether a corresponding one of the peripheral devices has data to transmit to the hub device. The data frame includes data transmitted between the hub device and the peripheral devices.

대표청구항 ▼

1. A communications protocol used in a network having a hub device connected to a plurality of peripheral devices, comprising:a synchronization beacon frame, broadcast by the hub device to the peripheral devices for permitting the peripheral devices to synchronize to the network, including: an attac

1. A communications protocol used in a network having a hub device connected to a plurality of peripheral devices, comprising:a synchronization beacon frame, broadcast by the hub device to the peripheral devices for permitting the peripheral devices to synchronize to the network, including: an attach field that indicates whether the hub device is permitting new peripheral devices to attach to the network, a beacon identifier that identifies a frame as the synchronization beacon frame, and a hub identifier that identifies an address of the hub device; a token frame, broadcast by the hub device to the peripheral devices for allocating network bandwidth among the peripheral devices, including: a data portion that schedules a data transmission on the network, and a status response portion that schedules a status response transmission on the network; a status response frame, transmitted by the peripheral devices to the hub device for indicating whether the peripheral devices have data to transmit to the hub device, including: a data transmission field that indicates whether a corresponding one of the peripheral devices has data to transmit to the hub device; and a data frame including data transmitted between the hub device and the peripheral devices.