Asymmetric D2D Communication
First Claim
Patent Images
1. A method, comprising:
- acquiring, by a first user terminal incapable to receive uplink data, information indicating whether or not to apply an asymmetric device-to-device, D2D, communication with a second user terminal capable to receive uplink data; and
upon applying the asymmetric D2D communication with the second user terminal, performing at least one of the following;
acquiring data from the second user terminal via a base station of the cellular network, and causing transmission of data directly to the second user terminal.
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Abstract
There is provided a method for an asymmetric device-to-device, D2D, communication, the method including from the first terminal point of view: acquiring, by the first user terminal incapable to receive uplink data, information indicating whether or not to apply an asymmetric D2D communication with a second user terminal capable to receive uplink data; and upon applying the asymmetric D2D communication with the second user terminal, performing at least one of the following: acquiring data from the second user terminal via a base station of the cellular network, and causing transmission of data directly to the second user terminal.
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Citations
19 Claims
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1. A method, comprising:
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acquiring, by a first user terminal incapable to receive uplink data, information indicating whether or not to apply an asymmetric device-to-device, D2D, communication with a second user terminal capable to receive uplink data; and upon applying the asymmetric D2D communication with the second user terminal, performing at least one of the following;
acquiring data from the second user terminal via a base station of the cellular network, and causing transmission of data directly to the second user terminal. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An apparatus, comprising:
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at least one processor and at least one memory including a computer program code, wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus at least to; acquire information indicating whether or not a first user terminal incapable to receive uplink data is to apply an asymmetric device-to-device, D2D, communication with a second user terminal capable to receive uplink data; and upon applying the asymmetric D2D communication with the second user terminal, perform at least one of the following;
acquire data from the second user terminal via a base station of the cellular network, and cause transmission of data directly to the second user terminal. - View Dependent Claims (8, 9, 10, 11, 12)
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13. An apparatus, comprising:
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at least one processor and at least one memory including a computer program code, wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus at least to; acquire information of device-to-device, D2D, communication capabilities of a first user terminal and a second user terminal; select, at least partly based on the acquired D2D communication capabilities, which communication scheme is to be applied by the first user terminal and the second user terminal among a plurality of communication schemes, wherein the selected communication scheme utilizes at least one of the following;
a conventional cellular communication between the first and second user terminals, a symmetrical D2D communication wherein each of the first and second user terminal transmits data directly to the other user terminal, an asymmetric D2D communication wherein only the first user terminal transmits data directly to the second user terminal by applying the uplink resources of the cellular network;cause transmission of indication about which communication scheme to apply to the first user terminal and the second user terminal; and upon application of the communication scheme utilizing the asymmetric D2D communication, cause forwarding of data from the second user terminal to the first user terminal. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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Specification