METHOD AND APPARATUS FOR DEVICE-TO-DEVICE COMMUNICATION
First Claim
Patent Images
1. A method in a communication network entity comprising:
- communicating with a first user equipment on a carrier;
allocating resources of the carrier, the allocated resources comprising a subframe, the subframe comprising;
a first set of symbols configured for direct wireless transmission from the first user equipment to a second user equipment;
a second set of symbols configured for direct wireless transmission from the second user equipment to the first user equipment; and
a guard interval between the first and second set of symbols.
2 Assignments
0 Petitions
Accused Products
Abstract
A first user equipment (UE) and a second UE communicate with a network element (e.g., an eNB) over a carrier (e.g., an uplink or downlink cellular carrier). The first and second UEs also engage in D2D communication using resources of the carrier that have been allocated to them by the network entity. Using the allocated resources, the first and second UEs communicate using a subframe that has a first set of symbols in during which the first UE transmits, a second set of symbols during which the second UE transmits, and a guard interval between the first and second UEs.
182 Citations
30 Claims
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1. A method in a communication network entity comprising:
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communicating with a first user equipment on a carrier; allocating resources of the carrier, the allocated resources comprising a subframe, the subframe comprising; a first set of symbols configured for direct wireless transmission from the first user equipment to a second user equipment; a second set of symbols configured for direct wireless transmission from the second user equipment to the first user equipment; and a guard interval between the first and second set of symbols. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method, on a first user equipment, the method comprising:
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communicating with a network element on a carrier; engaging in direct wireless communication with a second user equipment on a subframe of the carrier, wherein the subframe comprises; a first set of symbols configured for direct wireless transmission from the first user equipment to a second user equipment; a second set of symbols configured for direct wireless transmission from the second user equipment to the first user equipment; and a guard interval between the first and second set of symbols. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23)
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24. A method on a network entity of a wireless communication system, the method comprising:
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setting up a connection with at least a first user equipment; determining the need for direct wireless communication between the first user equipment and the second user equipment; if it is determined that there is a need for direct wireless communication between the first user equipment and the second user equipment, assigning a sequence of repeating frames to be used for a direct wireless link between the first user equipment and the second user equipment on the carrier, wherein the frames are time-multiplexed within the sequence; each of the repeating frames comprises a plurality of subframes; at least one subframe of at least one of the repeating frames comprises a plurality of symbols, a first sequence of symbols of the plurality is assigned to the first user equipment for direct transmission to the second user equipment, a second sequence of symbols is assigned to the second user equipment for direct transmission to the first user equipment, a third sequence of symbols functions as a transition region between the first and second sequence of symbols, the transition region being used by the first or second user equipment to switch from transmission to reception of wireless signals. - View Dependent Claims (25, 26, 27, 28, 29)
determining the capability of the user equipment to engage in cellular communication simultaneously with engaging in direct wireless communication; and determining a time-multiplexing pattern of the plurality of subframes based at least in part on the determined capabilities.
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29. The method of claim 24, further comprising
determining the transmission modes or transmission schemes used by a first user equipment to transmit on the first sequence of symbols to the second user equipment, wherein the determination is based on the ability of the first user equipment to engage in direct wireless communication, and the ability of the first user equipment to engage in cellular communication simultaneously with engaging in direct wireless communication
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30. A first user equipment comprising:
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a transceiver configured to transmit information to a network element on a first carrier, receive information from a network element on a second carrier, wherein the information identifies resources of the first carrier that have been allocated to the first user equipment for engaging in direct wireless communication with a second user equipment, the identified resources comprising a subframe, the subframe comprising; a first set of symbols configured for direct wireless transmission from the first user equipment to the second user equipment; a second set of symbols configured for direct wireless transmission from the second user equipment to the first user equipment; and a guard interval between the first and second sets of symbols; and a memory communicatively linked to the transceiver, the memory being configured to store data representing the identified resources; a processor communicatively linked to the memory and to the transceiver, the processor being configured to retrieve the data from the memory and, using the retrieved data, controlling the transceiver to engage in direct wireless communication with the second user equipment using the identified resources of the first carrier.
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Specification