System and Method for TDD Configuration for D2D Open Discovery
First Claim
1. A method for device-to-device (D2D) discovery in time division duplexing (TDD) communications, the method comprising:
- selecting, at a network component, a TDD frame configuration from a set of available TDD frame configurations;
sending, from the network component, an indicator of the TDD frame configuration to a plurality of devices;
determining a D2D discovery configuration for a discovery time interval according to the TDD frame configuration; and
sending, from the network component to the plurality of devices, the D2D discovery configuration,wherein the D2D discovery configuration includes parameters relating to resources of D2D discovery signals and transmission of the D2D discovery signals during the discovery time interval.
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Accused Products
Abstract
Embodiments are provided to support device-to-device (D2D) communications in a time-division duplexing (TDD) communications system, and ensure that D2D discovery signals are transmitted by user devices on an uplink subframe when there is a TDD frame configuration change. In an embodiment, a user device receives form the network a TDD frame configuration selected from a set of available TDD frame configurations according to the TDD configuration. The device further receives a D2D discovery configuration for a discovery time interval. The user device then allocates a transmission resource a D2D discovery signal within the discovery time interval according to the D2D discovery configuration. The user device is also configured to receive from another device a second D2D discovery signal during the discovery time interval in accordance with the TDD configuration and the D2D discovery configuration.
48 Citations
32 Claims
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1. A method for device-to-device (D2D) discovery in time division duplexing (TDD) communications, the method comprising:
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selecting, at a network component, a TDD frame configuration from a set of available TDD frame configurations; sending, from the network component, an indicator of the TDD frame configuration to a plurality of devices; determining a D2D discovery configuration for a discovery time interval according to the TDD frame configuration; and sending, from the network component to the plurality of devices, the D2D discovery configuration, wherein the D2D discovery configuration includes parameters relating to resources of D2D discovery signals and transmission of the D2D discovery signals during the discovery time interval. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for device-to-device (D2D) discovery in time division duplexing (TDD) communications, the method comprising:
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receiving, at a user device, an indicator of a TDD frame configuration selected from a set of available TDD frame configurations; receiving, at the user device, a D2D discovery configuration for a discovery time interval in accordance with the TDD frame configuration; allocating a transmissions resource to a D2D discovery signal within the discovery time interval according to the D2D discovery configuration; transmitting, from the user device, the D2D discovery signal during the discovery time interval; and receiving, at the user device from another user device, a second D2D discovery signal during the discovery time interval according to the TDD configuration and the D2D discovery configuration. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A network component for time division duplexing (TDD) communications, the network component comprising:
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at least one processor; and a computer readable storage medium storing programming for execution by the at least one processor, the programming including instructions to; select a TDD frame configuration from a set of available TDD frame configurations; send an indicator of the TDD frame configuration to a plurality of devices; and determine a D2D discovery configuration for a discovery time interval according to the TDD frame configuration; and send, to the plurality of devices, the D2D discovery configuration, wherein the D2D discovery configuration includes parameters relating to resources of D2D discovery signals and transmission of the D2D discovery signals during the discovery time interval. - View Dependent Claims (25, 26, 27, 28, 29, 30)
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31. A user device configured for device-to-device (D2D) and time division duplexing (TDD) communications, the user device comprising:
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at least one processor; and a computer readable storage medium storing programming for execution by the at least one processor, the programming including instructions to; receive an indicator of a TDD frame configuration selected from a set of available TDD frame configurations; receive a D2D discovery configuration for a discovery time interval in accordance with the TDD frame configuration; allocate a transmissions resource to a D2D discovery signal within the discovery time interval according to the D2D discovery configuration; transmit the D2D discovery signal during the discovery time interval; and receive, from another user device, a second D2D discovery signal during the discovery time interval according to the TDD configuration and the D2D discovery configuration. - View Dependent Claims (32)
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Specification