Wireless communication methods and apparatus supporting multiple modes
First Claim
Patent Images
1. A method of operating a wireless device, the method comprising:
- monitoring for broadcast signals from a base station;
determining from a received beacon signal transmitted from said base station if said base station has reallocated frequency spectrum from one of;
i) infrastructure use and ii) peer to peer use during which said spectrum is used for peer to peer communications to the other one of;
i) infrastructure use and ii) peer to peer use;
determining from said received beacon signal whether spectrum is allocated for infrastructure use or peer to peer use; and
in response to detecting a reallocation of frequency spectrum from a peer to peer use to an infrastructure use, reducing a transmission power.
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Accused Products
Abstract
Wireless terminal operation is coordinated to be responsive to dynamic communications frequency spectrum reallocation between infrastructure based communications usage and peer to peer communications usage. Methods and apparatus in which mobile nodes switch between cellular and peer to peer communication modes of operation are described. Broadcast signals, e.g., beacon signals, are monitored and detected by the mobile node to ascertain a current spectrum usage designation, and the mobile node switches operational modes in response to detected changes in the broadcast signals.
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Citations
39 Claims
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1. A method of operating a wireless device, the method comprising:
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monitoring for broadcast signals from a base station; determining from a received beacon signal transmitted from said base station if said base station has reallocated frequency spectrum from one of;
i) infrastructure use and ii) peer to peer use during which said spectrum is used for peer to peer communications to the other one of;
i) infrastructure use and ii) peer to peer use;determining from said received beacon signal whether spectrum is allocated for infrastructure use or peer to peer use; and in response to detecting a reallocation of frequency spectrum from a peer to peer use to an infrastructure use, reducing a transmission power. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 14, 15, 38, 39)
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12. A wireless communications device, comprising:
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a link establishment module for establishing a communications link with a base station; a broadcast signal monitoring module for monitoring to detect broadcast signals from said base station while maintaining said communications link; a determination module configured to; determine from a received beacon signal transmitted from said base station if said base station has reallocated frequency spectrum from one of;
i) infrastructure use and ii) peer to peer use during which said spectrum is used for peer to peer communications to the other one of;
i) infrastructure use and ii) peer to peer use anddetermine from said received beacon signal whether spectrum is allocated for infrastructure use or peer to peer use; and a mode control module for controlling the wireless communications device to operate in a peer to peer mode of operation when it is determined that spectrum is to be used for peer to peer mode communication and for controlling the wireless communications device to operate in a cellular mode of operation when it is determined that spectrum is to be used for cellular mode communication, said mode control module reducing a transmission power when said received beacon signal indicates a reallocation of frequency spectrum from a peer to peer use to an infrastructure use. - View Dependent Claims (13, 16, 17, 18, 19)
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20. A wireless communications device, comprising:
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link establishment means for establishing a communications link with a base station; broadcast signal monitoring means for monitoring to detect broadcast signals from said base station while maintaining said communications link; means for determining from a received beacon signal transmitted from said base station if said base station has reallocated frequency spectrum from one of;
i) infrastructure use and ii) peer to peer use during which said spectrum is used for peer to peer communications to the other one of;
i) infrastructure use and ii) peer to peer usemeans for determining from said received beacon signal whether spectrum is allocated for infrastructure use or peer to peer use; and mode control means for controlling the wireless communications device to operate in a peer to peer mode of operation when it is determined that spectrum is to be used for peer to peer mode communication and for controlling the wireless communications device to operate in a cellular mode of operation when it is determined that spectrum is to be used for cellular mode communication, said mode control means reducing a transmission power when said received beacon signal indicates a reallocation of frequency spectrum from a peer to peer use to an infrastructure use. - View Dependent Claims (21, 22, 23, 24, 25)
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26. A non-transitory computer readable medium embodying machine executable instructions for controlling a wireless device, the non-transitory computer readable medium comprising:
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instructions for causing the wireless device to monitor for broadcast signals from a base station; instructions for causing the wireless device to determine from a received beacon signal transmitted from said base station if said base station has reallocated frequency spectrum from one of;
i) infrastructure use and ii) peer to peer use during which said spectrum is used for peer to peer communications to the other one of;
i) infrastructure use and ii) peer to peer use;instructions for causing the wireless device to determine from said received beacon signal whether spectrum is allocated for infrastructure use or peer to peer use and instructions for causing the wireless device to reduce a transmission power when said received beacon signal indicates a reallocation of frequency spectrum from a peer to peer use to an infrastructure use. - View Dependent Claims (27, 28, 29, 30, 31)
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32. An apparatus comprising:
a wireless communications device processor configured to; monitor to detect broadcast signals from a base station; determine from a received beacon signal transmitted from said base station if said base station has reallocated frequency spectrum from one of;
i) infrastructure use and ii) peer to peer use during which said spectrum is used for peer to peer communications to the other one of;
i) infrastructure use and ii) peer to peer use;determine from said received beacon signal whether spectrum is allocated for infrastructure use or peer to peer use and control the apparatus to operate in a peer to peer mode of operation when it is determined that spectrum is to be used for peer to peer mode communication and for controlling the apparatus to operate in a cellular mode of operation when it is determined that spectrum is to be used for cellular mode communication, said apparatus reducing a transmission power when said received beacon signal indicates a reallocation of frequency spectrum from a peer to peer use to an infrastructure use. - View Dependent Claims (33, 34, 35, 36, 37)
Specification