Wireless Communication Apparatus and Method
AssigneeEssence Security International (E.S.I.) Ltd.
InventorsOhad AMIR, Yossi YOSSEF
Life of this patent
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Abstract
Wireless communication is effected by signaling, in a beacon, that a time period following the beacon is to be used for communication. In the event that the beacon indicates no communication in that time period, there is an opportunity for listening devices to enter a sleep mode before the next anticipated beacon. A pending address frame can follow the beacon to indicate which listening devices are addressed for communications within the time period, and scheduling of such communications. Non-participating listening devices also have an opportunity for entry into the sleep mode.
Claims29
A wireless communication device configured to emit periodic beacons, each beacon comprising an indication as to whether a further communication, in addition to the beacon, is scheduled to occur in a time period following the beacon, wherein, in the event that the beacon indicates said further communication is to occur, the device is operable to emit a pending address frame in said time period, said pending address frame comprising addressing information for identification of one or more addressed slave devices that are to participate in said further communication and scheduling information for said further communication, and to participate in said further communication with respect to said scheduling information, wherein the device is operable, in the event that a single further communication is to occur in the time period, and said single further communication comprises a communication to be emitted by the device, to emit that communication instead of a pending address frame.
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A wireless communication device configured to respond to receipt of a beacon, to extract from the beacon an indication as to whether a further communication, in addition to the beacon, is scheduled to occur in a time period following the beacon, wherein, in the event that the beacon indicates said further communication is to occur, the device is responsive to receive a pending address frame in said time period subsequent to said beacon, said pending address frame comprising addressing information for identification of one or more addressed slave devices that are to participate in said further communication and scheduling information for said further communication, the device being responsive to addressing information, indicative that the device is to participate in a further communication, to be in a condition to participate in said further communication in accordance with said scheduling information, the device being operable to detect, as an alternative to a pending address frame, a single further communication following a beacon and, on completion of that further communication, to enter a low-power mode.
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A method of wireless communication comprising emitting periodic beacons, each beacon comprising an indication as to whether a further communication, in addition to the beacon, is scheduled to occur in a time period following the beacon, wherein, in the event that the beacon indicates said further communication is to occur, emitting a pending address frame in said time period, said pending address frame comprising addressing information for identification of one or more addressed slave devices that are to participate in said further communication and scheduling information for said further communication, and effecting said further communication with respect to said scheduling information, wherein, in the event that a single further communication is to occur in the time period, and said single further communication comprises a communication to be emitted by the device, emitting that communication instead of a pending address frame.
A wireless communication method at a wireless communications device, in response to receipt at said device of a beacon, comprising extracting from the beacon an indication as to whether a further communication, in addition to the beacon, is scheduled to occur in a time period following the beacon, wherein, in the event that the beacon indicates said further communication is to occur, receiving a pending address frame in said time period subsequent to said beacon, said pending address frame comprising addressing information for identification of one or more addressed slave devices that are to participate in said further communication and scheduling information for said further communication, and in the event that the addressing information indicates that the device is to participate in a further communication, placing the device in a condition to participate in said further communication in accordance with said scheduling information, wherein the method comprises detecting, as an alternative to a pending address frame, a single further communication following a beacon and, on completion of that further communication, entering a low-power mode.
A non-transitory computer readable storage medium storing computer executable instructions which, when executed by a device, cause that device to perform a method comprising emitting periodic beacons, each beacon comprising an indication as to whether a further communication, in addition to the beacon, is scheduled to occur in a time period following the beacon, wherein, in the event that the beacon indicates said further communication is to occur, emitting a pending address frame in said time period, said pending address frame comprising addressing information for identification of one or more addressed slave devices that are to participate in said further communication and scheduling information for said further communication, and effecting said further communication with respect to said scheduling information, wherein, in the event that a single further communication is to occur in the time period, and said single further communication comprises a communication to be emitted by the device, emitting that communication instead of a pending address frame.
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Dependencies are inferred from the claim text.