Method for performing ranging related operation in wireless communication system
AssigneeLG Electronics Inc.
InventorHyukjin Chae
Life of this patent
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Abstract
One embodiment of the present invention relates to a method by which a user equipment (UE) performs ranging in a wireless communication system, comprising the steps of: transmitting a D2D signal in a subframe N by a first UE; receiving the D2D signal in a subframe N+K from a second UE, which has set, as a subframe boundary, a time point at which the D2D signal is received; and measuring, by the first UE, a round trip time (RTT) by detecting a reception time point of the D2D signal transmitted by the second UE.
Claims10
A method of performing ranging, which is performed by a first user equipment (UE) in a wireless communication system, comprising:
- transmitting a D2D discovery signal in a subframe N by the first UE;
- receiving a D2D signal in a subframe N+K from a second UE;
- and
- measuring RTT (round trip time), by the first UE, by detecting timing at which the D2D signal transmitted by the second UE is received,
- wherein the subframe N+K in which the D2D signal is received has a subframe boundary configured based on a reception timing at the second UE of the D2D discovery signal;
- and
- wherein the K corresponds to a value configured by a network and wherein if the subframe N+K is not a D2D subframe, the K corresponds to a D2D subframe closest to the subframe N+K.
A user equipment (UE) for performing ranging in a
- wireless communication system, comprising:
- a transmitter and a receiver;
- and
- a processor coupled to the transmitter and receiver, wherein the processor is configured to;
- transmit a D2D discovery signal in a subframe N,
- receive a D2D signal in a subframe N+K from a second UE,
- measure RTT (round trip time) by detecting timing at which the D2D signal transmitted by the second UE is received,
- wherein the subframe N+K in which the D2D signal is received has a subframe boundary configured based on a reception timing at the second UE of the D2D discovery signal;
- and
- wherein the K corresponds to a value configured by a network and wherein if the subframe N+K is not a D2D subframe, the K corresponds to a D2D subframe closest to the subframe N+K.
Dependencies are inferred from the claim text.