Peer to peer mobile user equipment communication with on-demand discovery signal transmission
First Claim
1. A wireless device, comprising:
- at least one antenna;
at least one radio communicatively coupled to the at least one antenna, wherein the at least one radio is configured to perform cellular communication using at least one radio access technology (RAT);
one or more processors communicatively coupled to the at least one radio, wherein the one or more processors and the at least one radio are configured to perform wireless voice and/or data communications using the at least one antenna;
wherein the one or more processors and at least one radio are configured to cause the wireless device to;
monitor one or more discovery request channels in a discovery resource set assigned by a base station;
determine that the wireless device has moved greater than a threshold distance since transmission of a prior discovery request signal to neighboring wireless devices, wherein the threshold distance comprises a specified distance since the transmission of the prior discovery request signal to the neighboring wireless devices; and
transmit, in response to one of determining that a discovery request signal relevant to the wireless device has been received from a neighboring wireless device and determining that the wireless device has moved greater than a threshold distance since transmission of the prior discovery request signal, a discovery signal on a discovery request channel in the discovery resource set.
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Abstract
In some embodiments, a user equipment device (UE) implements a method for discovering the presence of neighboring UEs using an on-demand discovery signal transmission technique. This discovery process may be performed to enable the UEs to perform peer-to-peer communications with each other, wherein peer-to-peer communications is defined as direct communication between the UEs without involving a base station. The UE may be configured to transmit a discovery request signal when it has moved greater than a threshold amount since transmission of a prior discovery request signal. The discovery request signal causes one or more neighboring UEs to each transmit a discovery signal in response, and also causes the UE which generated the discovery request signal to transmit its own discovery signal. The received discovery signal from each of the neighboring UEs is useable to discover, or detect the presence of, these neighboring UEs.
12 Citations
20 Claims
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1. A wireless device, comprising:
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at least one antenna; at least one radio communicatively coupled to the at least one antenna, wherein the at least one radio is configured to perform cellular communication using at least one radio access technology (RAT); one or more processors communicatively coupled to the at least one radio, wherein the one or more processors and the at least one radio are configured to perform wireless voice and/or data communications using the at least one antenna; wherein the one or more processors and at least one radio are configured to cause the wireless device to; monitor one or more discovery request channels in a discovery resource set assigned by a base station; determine that the wireless device has moved greater than a threshold distance since transmission of a prior discovery request signal to neighboring wireless devices, wherein the threshold distance comprises a specified distance since the transmission of the prior discovery request signal to the neighboring wireless devices; and transmit, in response to one of determining that a discovery request signal relevant to the wireless device has been received from a neighboring wireless device and determining that the wireless device has moved greater than a threshold distance since transmission of the prior discovery request signal, a discovery signal on a discovery request channel in the discovery resource set. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An apparatus, comprising:
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a memory; and a processor in communication with the memory, wherein the processor is configured to; generate instructions to transmit, in response to determining movement greater than a threshold distance since transmission of a prior discovery request signal to neighboring wireless devices, a discovery request signal over a discovery request channel to the neighboring wireless devices, wherein the threshold distance is a specified distance since the transmission of the prior discovery request signal; and receive, over at least one of one or more discovery channels assigned by a base station, discovery signals from one or more of the neighboring wireless devices in response to transmission of the discovery request signal, wherein the received discovery signals are useable to discover one or more of the neighboring wireless devices. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. An apparatus, comprising:
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a memory; and a processor in communication with the memory, wherein the processor is configured to; generate instructions to monitor one or more discovery request channels in a discovery resource set; wherein, in response to determining movement greater than a threshold distance since transmission of a prior discovery request signal, the processor is further configured to generate instructions to transmit a discovery signal on a discovery channel in the discovery resource set; wherein, in response to determining movement less than the threshold distance since the transmission of the prior discovery request signal, the processor is further configured to generate instructions to not transmit the discovery request signal; and wherein the threshold distance comprises a specified distance since transmission of the prior discovery request signal. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification