Wireless support for portable media player devices
First Claim
1. A method to operate a wireless device in an ad hoc network, comprising:
- performing passive discovery operations on a discovery channel by the wireless device during a discovery window of a periodic discovery interval, the passive discovery operations enabling discovery by neighbor wireless devices and discovering neighbor wireless devices passively;
switching from the discovery channel to a data channel when the discovery window of the periodic discovery interval ends;
sending a data announcement packet on the data channel during a data window of the periodic discovery interval;
sending data on the data channel during the data window of the periodic discovery interval following transmission of the data announcement packet;
operating the wireless device, during the periodic discovery interval, with a short data transfer window followed by a power save mode, in which a radio of the wireless device is turned off, when a power save data transfer mode is selected;
operating the wireless device, during the periodic discovery interval, with a long data window when a high speed data transfer mode is selected; and
alternating between the discovery channel used for the discovery window and the data channel used for the data window, wherein passive discovery and data transfer are performed concurrently, and power is saved when the power save data transfer mode is selected.
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Accused Products
Abstract
A portable media player device is capable of operating in a wireless network. The wireless portable media player device can bootstrap and synchronize with an ad hoc network with low power consumption. Neighbor portable media player devices in an ad hoc network can be discovered by the wireless portable media player device. The portable media player device can establish and terminate connections to neighbor portable media player devices. The portable media player device can transfer data in a high speed data transfer mode or a power save data transfer mode, while concurrently permitting discovery by other devices. The portable media player device operates in a power save mode during an inactive portion of a periodic discovery interval.
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Citations
20 Claims
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1. A method to operate a wireless device in an ad hoc network, comprising:
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performing passive discovery operations on a discovery channel by the wireless device during a discovery window of a periodic discovery interval, the passive discovery operations enabling discovery by neighbor wireless devices and discovering neighbor wireless devices passively; switching from the discovery channel to a data channel when the discovery window of the periodic discovery interval ends; sending a data announcement packet on the data channel during a data window of the periodic discovery interval; sending data on the data channel during the data window of the periodic discovery interval following transmission of the data announcement packet; operating the wireless device, during the periodic discovery interval, with a short data transfer window followed by a power save mode, in which a radio of the wireless device is turned off, when a power save data transfer mode is selected; operating the wireless device, during the periodic discovery interval, with a long data window when a high speed data transfer mode is selected; and alternating between the discovery channel used for the discovery window and the data channel used for the data window, wherein passive discovery and data transfer are performed concurrently, and power is saved when the power save data transfer mode is selected. - View Dependent Claims (2, 3, 4, 5, 6, 18)
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7. A wireless portable media player device comprising:
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a portable media player; a radio to permit wireless operation; and a wireless module logically connected to the portable media player and to the radio to operate the wireless portable media player device in an ad hoc network, the wireless module comprising a processor programmed with instructions for; performing passive discovery operations on a discovery channel during a discovery window of a periodic discovery interval, the passive discovery operations enabling discovery by neighbor wireless devices and discovering neighbor wireless devices passively; switching from the discovery channel to a data channel when the discovery window of the periodic discovery interval ends; sending a data announcement packet on the data channel during a data window of the periodic discovery interval; sending data on the data channel during the data window of the periodic discovery interval following transmission of the data announcement packet; operating the wireless portable media player device, during the periodic discovery interval, with a short data transfer window followed by a power save mode, in which the radio is turned off, when a power save data transfer mode is selected; operating the wireless portable media player device, during the periodic discovery interval, with a long data window when a high speed data transfer mode is selected; and alternating between the discovery channel used for the discovery window and the data channel used for the data window, wherein passive discovery and data transfer are performed concurrently, and power is saved when the power save data transfer mode is selected. - View Dependent Claims (8, 9, 10, 11, 12, 19)
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13. A computer-readable medium programmed with instructions for executing a method to operate a wireless device in an ad hoc network, comprising:
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performing passive discovery operations on a discovery channel by the wireless device during a discovery window of a periodic discovery interval, the passive discovery operations enabling discovery by neighbor wireless devices and discovering neighbor wireless devices passively; switching from the discovery channel to a data channel when the discovery window of the periodic discovery interval ends; sending a data announcement packet on the data channel during a data window of the periodic discovery interval; sending data on the data channel during the data window of the periodic discovery interval following transmission of the data announcement packet; operating the wireless device, during the periodic discovery interval, with a short data transfer window followed by a power save mode, in which a radio of the wireless device is turned off, when a power save data transfer mode is selected; operating the wireless device, during the periodic discovery interval, with a long data window when a high speed data transfer mode is selected; and alternating between the discovery channel used for the discovery window and the data channel used for the data window, wherein passive discovery and data transfer are performed concurrently, and power is saved when the power save data transfer mode is selected. - View Dependent Claims (14, 15, 16, 17, 20)
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Specification