SWITCHING MODE OF OPERATION IN D2D COMMUNICATIONS
First Claim
1. A method of device to device (D2D) wireless communication at a user equipment (UE), comprising:
- establishing communications with one or more other UEs according to a first D2D mode, the first D2D mode based at least in part on a centralized transmission resource schedule received from a base station;
determining that one or more mode switching parameters have been satisfied; and
switching to a second D2D mode, the second D2D mode based at least in part on a distributed transmission scheduling using a pool of resources allocated by the base station.
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Abstract
Methods, systems, and devices are described for switching a mode of operations in device to device (D2D) communications. A UE within the coverage area of a base station may communicate directly with other UEs using a centralized transmission resource schedule. Prior to experiencing radio link failure (RLF), the UE may determine that switching parameters have been met and transition to an intermediate mode based on a distributed transmission schedule using a pool of resources established by the base station. In one example, the switching parameters may be received from the base station in a connection response message. In another example, the UE may send a switching request to the base station prior to initiating the transition to the intermediate mode. In some cases, after the transition to the intermediate mode, the UE may experience a radio link failure and transition to a distributed mode using a predetermined pool of resources.
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Citations
30 Claims
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1. A method of device to device (D2D) wireless communication at a user equipment (UE), comprising:
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establishing communications with one or more other UEs according to a first D2D mode, the first D2D mode based at least in part on a centralized transmission resource schedule received from a base station; determining that one or more mode switching parameters have been satisfied; and switching to a second D2D mode, the second D2D mode based at least in part on a distributed transmission scheduling using a pool of resources allocated by the base station. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. An apparatus for device to device (D2D) wireless communication at a user equipment (UE), comprising:
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means for establishing communications with one or more other UEs according to a first D2D mode, the first D2D mode based at least in part on a centralized transmission resource schedule received from a base station; means for determining that one or more mode switching parameters have been satisfied; and means for switching to a second D2D mode, the second D2D mode based at least in part on a distributed transmission scheduling using a pool of resources allocated by the base station. - View Dependent Claims (25, 26)
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27. An apparatus for device to device (D2D) wireless communication at a user equipment (UE), comprising:
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a processor; memory in electronic communication with the processor; and instructions stored in the memory, the instructions being executable by the processor to; establish communications with one or more other UEs according to a first D2D mode, the first D2D mode based at least in part on a centralized transmission resource schedule received from a base station; determine that one or more mode switching parameters have been satisfied; and switch to a second D2D mode, the second D2D mode based at least in part on a distributed transmission scheduling using a pool of resources allocated by the base station. - View Dependent Claims (28)
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29. A method of device to device (D2D) wireless communication, comprising:
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establishing communications with one or more other UEs according to a first D2D mode, the first D2D mode based at least in part on a preconfigured pool of transmission resources; receiving system information from a base station allocating a pool of resources for transmission; and switching to a second D2D mode, the second D2D mode being based on distributed transmission scheduling using the pool of resources allocated by the base station. - View Dependent Claims (30)
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Specification