METHOD AND APPARATUS FOR ESTABLISHING PEER-TO-PEER COMMUNICATION
First Claim
1. A method of establishing peer-to-peer communication, the method comprising:
- in response to receiving a first signal from a base station, a first wireless transmit/receive unit (WTRU) transmitting a second signal; and
the first WTRU receiving a third signal from a second WTRU responding to the second signal, wherein the third signal is a handshake seeking signal.
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Accused Products
Abstract
A method and apparatus for establishing peer-to-peer communication and performing forwarding under the control of a cellular network are described. A seeking wireless transmit/receive unit (WTRU) may receive a timing signal from at least one discoverable WTRU controlled by a base station. The seeking WTRU may estimate the quality of a radio link (i.e., path loss) between the seeking WTRU and the discoverable WTRU, and determine, (e.g., based on a threshold established by the base station), whether or not to report the estimated radio link quality to a base station that controls the discoverable WTRU. The power of the timing signal may be ramped up in predetermined steps such that the transmission power at any given time is known and may be used by the seeking WTRU for estimating the radio link quality. The timing signal may include at least one of a primary preamble or a secondary preamble.
101 Citations
20 Claims
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1. A method of establishing peer-to-peer communication, the method comprising:
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in response to receiving a first signal from a base station, a first wireless transmit/receive unit (WTRU) transmitting a second signal; and the first WTRU receiving a third signal from a second WTRU responding to the second signal, wherein the third signal is a handshake seeking signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of establishing peer-to-peer communication, the method comprising:
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a first wireless transmit/receive unit (WTRU) transmitting a first signal; and in response to the first signal, a second WTRU transmitting a second signal, wherein the second signal has a transmission power that is ramped up by the second WTRU during listening windows until a response is received from the first WTRU or a maximum allowed transmission power is reached. - View Dependent Claims (12, 13, 14)
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15. A method of establishing peer-to-peer communication, the method comprising:
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a first wireless transmit/receive unit (WTRU) transmitting a first signal to a second WTRU; in response to receiving the first signal, the second WTRU transmitting a second signal; and in response to receiving the second signal, the first WTRU transmitting at least one of a primary preamble, a secondary preamble, superframe header (SFH) or a secondary SFH. - View Dependent Claims (16, 17)
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18. A wireless transmit/receive unit (WTRU) comprising:
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a receiver configured to receive a first signal from a base station instructing the WTRU to transmit a second signal; and a transmitter configured to transmit the second signal in accordance with the first signal, wherein the receiver is further configured to receive a third signal from another WTRU responding to the second signal, wherein the third signal is a handshake seeking signal. - View Dependent Claims (19, 20)
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Specification