Device-to-device (D2D) link adaptation
First Claim
1. A method for measuring channel quality in a device-to-device (D2D) communication network, wherein the D2D communication network comprises one or more D2D wireless transmit/receive units (WTRUs), the method comprising:
- receiving a channel measurement resource configuration corresponding to a channel measurement resource;
receiving at least one reference signal (RS) on the channel measurement resource based on the received channel measurement resource configuration, wherein the channel measurement resource configuration comprises a reference signal (RS) bandwidth;
determining a sub-set of subcarriers associated with a D2D communication bandwidth, and wherein the D2D communication bandwidth is a sub-set of the RS bandwidth;
selecting the sub-set of subcarriers from the received at least one RS;
measuring one or more channel state parameters associated with the selected sub-set of subcarriers; and
reporting channel state parameters associated with the selected sub-set of subcarriers, over which the D2D WTRUs communicate, to a controlling entity.
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Accused Products
Abstract
Channel quality may be measured in a device-to-device (D2D) communication network. The D2D communication network may include one or more D2D wireless transmit/receive units (WTRUs), wherein the D2D WTRUs may communicate using a D2D bandwidth. A D2D WTRU may receive a channel measurement resource configuration corresponding to a channel measurement resource. The D2D WTRU may further receive an RS on the channel measurement resource. The D2D WTRU may measure one or more channel state parameters from the channel measurement resource for a part of bandwidth overlapping with a D2D communication bandwidth, when the RS bandwidth is greater than the D2D communication bandwidth. The D2D WTRU may report the channel state parameters to a controlling entity. The controlling entity may configure a D2D frequency allocation between a transmitting device and a receiving device. The D2D frequency allocation may be based on the time averaged measurement.
10 Citations
14 Claims
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1. A method for measuring channel quality in a device-to-device (D2D) communication network, wherein the D2D communication network comprises one or more D2D wireless transmit/receive units (WTRUs), the method comprising:
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receiving a channel measurement resource configuration corresponding to a channel measurement resource; receiving at least one reference signal (RS) on the channel measurement resource based on the received channel measurement resource configuration, wherein the channel measurement resource configuration comprises a reference signal (RS) bandwidth; determining a sub-set of subcarriers associated with a D2D communication bandwidth, and wherein the D2D communication bandwidth is a sub-set of the RS bandwidth; selecting the sub-set of subcarriers from the received at least one RS; measuring one or more channel state parameters associated with the selected sub-set of subcarriers; and reporting channel state parameters associated with the selected sub-set of subcarriers, over which the D2D WTRUs communicate, to a controlling entity. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A D2D wireless transmit/receive unit (D2D WTRU) in a device-to-device (D2D) communication network, wherein the D2D communication network comprises one or more WTRUs, the D2D WTRU comprising:
a processor configured to; receive a channel measurement resource configuration corresponding to a channel measurement resource; receive at least one reference signals (RS) on the channel measurement resource based on the received channel measurement resource configuration, wherein the channel measurement resource configuration comprises a reference signal (RS) bandwidth; determine a sub-set of subcarriers associated with a D2D communication bandwidth, and wherein the D2D communication bandwidth is a sub-set of the RS bandwidth; select the sub-set of subcarriers from the received at least one RS; measure one or more channel state parameters associated with the selected sub-set of subcarriers; and report channel state parameters associated with the selected sub-set of subcarriers, over which the D2D WTRUs communicate, to a controlling entity. - View Dependent Claims (9, 10, 11, 12, 13, 14)
Specification