Device to-device communications apparatus and methods
First Claim
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1. A method in a wireless terminal which communicates with a node of a radio access network over a radio interface, the method comprising:
- using receiver circuitry to receive from the node an indication which specifies, for device-to-device (D2D) communications with another wireless terminal, which of(1) network-allocated radio resources or(2) radio resources selected by the wireless terminal are to be used by the wireless terminal; and
using processor circuitry of the wireless terminal;
to use radio resources for the device-to-device (D2D) communications with the another wireless terminal in accordance with the indication;
to perform a cell selection/reselection operation; and
to set one frequency to a highest priority frequency with respect to the cell selection/reselection operation when the wireless terminal is performing;
(i) device-to-device (D2D) communications in a state where the wireless terminal camps on the one frequency; and
(ii) the cell selection/reselection operation.
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Abstract
A node of a radio access network (22) communicates with a wireless terminal (261) over a radio interface and sends to the wireless terminal (261) an indication (62) which specifies, for device-to-device (D2D) communications with another wireless terminal (262), whether the wireless terminal (261) is to use network-allocated radio resources or radio resources which are selected by the wireless terminal.
103 Citations
12 Claims
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1. A method in a wireless terminal which communicates with a node of a radio access network over a radio interface, the method comprising:
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using receiver circuitry to receive from the node an indication which specifies, for device-to-device (D2D) communications with another wireless terminal, which of (1) network-allocated radio resources or (2) radio resources selected by the wireless terminal are to be used by the wireless terminal; and using processor circuitry of the wireless terminal; to use radio resources for the device-to-device (D2D) communications with the another wireless terminal in accordance with the indication; to perform a cell selection/reselection operation; and to set one frequency to a highest priority frequency with respect to the cell selection/reselection operation when the wireless terminal is performing; (i) device-to-device (D2D) communications in a state where the wireless terminal camps on the one frequency; and (ii) the cell selection/reselection operation. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A wireless terminal which communicates with a node of a radio access network over a radio interface, the wireless terminal comprising:
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receiver circuitry configured to receive from the node an indication which specifies, for device-to-device (D2D) communications with another wireless terminal which of (1) network-allocated radio resources or (2) radio resources selected by the wireless terminal are to be used by the wireless terminal; and processor circuitry configured to use radio resources for the device-to-device (D2D) communications with the another wireless terminal in accordance with the indication; to perform a cell selection/reselection operation; and to set one frequency to a highest priority frequency with respect to the cell selection/reselection operation when the wireless terminal is performing; (i) device-to-device (D2D) communications in a state where the wireless terminal camps on the one frequency; and (ii) the cell selection/reselection operation. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification