Wireless communication methods and apparatus supporting peer to peer communications
First Claim
1. A method of operating a wireless device, the method comprising:
- determining from a first broadcast signal received from a base station that a frequency band corresponding to said base station is being used for peer to peer communications;
determining from a second broadcast signal received from the base station that said frequency band has been reallocated to being used as a cellular frequency band; and
in response to determining that the frequency band is being used as a cellular frequency band reducing transmission power,wherein reducing transmission power includes a reduction in transmission power by at least 10 dBs.
3 Assignments
0 Petitions
Accused Products
Abstract
A first mobile node supports peer to peer communications but not cellular communications. Other mobile modes in the communication system support a cellular mode and may support a peer to peer communications mode. The communications system is such that spectrum may be dynamically reallocated between being designated to be used for peer to peer operations and being used primarily for cellular network based operations. Beacon signals are used to communicate a current mode of frequency spectrum usage designation. The first mobile node, being in an ongoing peer to peer communications session detects that the spectrum is being reallocated for cellular based operations. The first mobile node reduces its transmission power level in response to the detected spectrum reallocation. In some embodiments, the first mobile is allowed to continue its ongoing peer to peer session while the spectrum is primarily allocated for cellular communications, albeit at a lower transmission power level.
-
Citations
26 Claims
-
1. A method of operating a wireless device, the method comprising:
-
determining from a first broadcast signal received from a base station that a frequency band corresponding to said base station is being used for peer to peer communications; determining from a second broadcast signal received from the base station that said frequency band has been reallocated to being used as a cellular frequency band; and in response to determining that the frequency band is being used as a cellular frequency band reducing transmission power, wherein reducing transmission power includes a reduction in transmission power by at least 10 dBs. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A non-transitory-computer readable medium embodying machine executable instructions for controlling a wireless device to implement a method, the method comprising:
-
determining from a first broadcast signal received from a base station that a frequency band corresponding to said base station is being used for peer to peer communications; determining from a second broadcast signal received from the base station at said frequency band has been reallocated to being used as a cellular frequency band and in response to determining that the frequency band is being used as a cellular frequency band reducing the transmission power, wherein reducing transmission power includes a reduction in transmission power by at least 10 dBs. - View Dependent Claims (9, 10, 11, 12, 13)
-
-
14. A wireless device, comprising:
-
means for determining from a first broadcast signal received from a base station that a frequency band corresponding to said base station is being used for peer to peer communications; means for determining from a second broadcast signal received from the base station that said frequency band has been reallocated to being used as a cellular frequency band; and in response to determining that the frequency band is being used as a cellular frequency band reducing transmission power, wherein reducing transmission power includes a reduction in transmission power by at least 10 dBs. - View Dependent Claims (15, 16, 17, 18, 19)
-
-
20. A wireless device, comprising:
-
a processor; for determining from a first broadcast signal received from a base station that a frequency band corresponding to said base station is being used for peer to peer communications; for determining from a second broadcast signal received from the base station that said frequency band has been reallocated to being used as a cellular frequency band; and in response to determining that the frequency band is being used as a cellular frequency band reducing transmission power, wherein reducing transmission power includes a reduction in transmission power by at least 10 dBs. - View Dependent Claims (21, 22, 23, 24, 25, 26)
-
Specification