US 2020/0267702 A1Published application

Method for transmitting and receiving downlink control information in wireless communication system supporting device-to-device communication and device for the same

AssigneeLG Electronics Inc.

InventorsHakseong Kim, Hanbyul Seo

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Abstract

A method for transmitting and receiving downlink control information in a wireless communication system supporting device-to-device communication and a device for the same are disclosed. The method for receiving downlink control information in a wireless communication system supporting D2D (Device-to-Device) communication includes: receiving, by a UE, downlink control information for D2D communication from an eNB; transmitting, by the UE to a reception UE, D2D communication control information on a PSCCH (Physical Sidelink Control Channel) based on the downlink control information; and transmitting, by the UE to the reception UE, D2D communication data on a PSSCH (Physical Sidelink Shared Channel) based on the downlink control information, wherein the downlink control information may include: a hopping flag field indicating whether frequency hopping is applicable when transmitting the D2D communication control information and the D2D communication data; a PSCCH resource allocation (RA) field including scheduling information for the PSCCH; a first PSSCH RA field including scheduling information for the PSSCH in a frequency domain; a second PSSCH RA field including scheduling information for the PSSCH in a time domain; and a TPC (Transmission Power Control) field including transmission power information for the PSCCH and PSSCH.

Claims14

Dependent claims

A method for receiving, by a user equipment (UE), downlink control information (DCI) in a wireless communication system supporting a device-to-device (D2D) communication, the method comprising:

receiving, from a base station (BS), configuration information includes (i) a first parameter for calculating a D2D scheduling assignment (SA) transmission power for a D2D SA transmission and (ii) a second parameter for calculating a D2D data transmission power for a D2D data transmission,
wherein the first parameter and the second parameter are different parameter for calculating the D2D SA transmission power and the D2D data transmission power;
receiving, from the BS, the DCI for the D2D communication,
wherein the DCI comprises:
a hopping flag field indicating whether frequency hopping is applicable when transmitting the D2D data, a first resource allocation (RA) field including scheduling information for the D2D SA, a second RA field including a Resource Indication Value (RIV) indicating a starting resource block index for the D2D data transmission and length in terms of allocated resource blocks, a third RA field including information indicating a time resource pattern used for the D2D data transmission, and a single Transmission Power Control (TPC) field to be applied to both transmission power for the D2D SA and transmission power for the D2D data,
wherein the DCI is received in an n-th subframe (subframe # n) from the BS;
calculating, the D2D SA transmission power based on a value in the single TPC field and the first parameter;
calculating, the D2D data transmission power based on the value in the single TPC field and the second parameter;
transmitting, to a second UE, a D2D scheduling assignment (SA) for the D2D communication based on the DCI using the D2D SA transmission power,
wherein the D2D SA is transmitted to the second UE in a first available subframe which after an subframe # n+4;
and
transmitting, to the second UE, a D2D data for the D2D communication based on the DCI using the D2D data transmission power.

9 more elements

A user equipment (UE) for receiving downlink control information (DCI) in a wireless communication system supporting device-to-device (D2D) communication, the UE comprising:

a transceiver for transmitting and receiving radio signals;
and
a processor for controlling the transceiver,
wherein the processor being configured to:
receive, from a base station (BS), configuration information includes (i) a first parameter for calculating a D2D scheduling assignment (SA) transmission power for a D2D SA transmission and (ii) a second parameter for calculating a D2D data transmission power for a D2D data transmission,
wherein the first parameter and the second parameter are different parameter for calculating the D2D SA transmission power and the D2D data transmission power;
receive, from the BS, the DCI for the D2D communication,
wherein the DCI comprises:
a hopping flag field indicating whether frequency hopping is applicable when transmitting the D2D data, a first resource allocation (RA) field including scheduling information for the D2D SA, a second RA field including a Resource Indication Value (RIV) indicating a starting resource block index for the D2D data transmission and length in terms of allocated resource blocks, a third RA field including information indicating a time resource pattern used for the D2D data transmission, and a single Transmission Power Control (TPC) field to be applied to both transmission power for the D2D SA and transmission power for the D2D data,
wherein the DCI is received in an n-th subframe (subframe # n) from the BS;
calculate, the D2D SA transmission power based on a value in the single TPC field and the first parameter;
calculate, the D2D data transmission power based on the value in the single TPC field and the second parameter;
transmit, to a second UE, a D2D scheduling assignment (SA) for the D2D communication based on the DCI using the D2D SA transmission power,
wherein the D2D SA is transmitted to the second UE in a first available subframe which after an subframe # n+4;
and
transmit, to the second UE, a D2D data for the D2D communication based on the DCI using the D2D data transmission power.

13 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/803,296Filed 27 Feb 2020
Priority: 30 Mar 2014
Published: 20 Aug 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

H04W 72/23
Control channels or signalling for resource management: in the downlink direction of a wireless link, i.e. towards a terminal
H04W 52/04
Power management , e.g. Transmission Power Control [TPC] or power classes: transmission power control [TPC]
H04W 52/383
TPC being performed in particular situations: power control in peer-to-peer links
H04W 52/386
TPC being performed in particular situations: centralized, e.g. when the radio network controller or equivalent takes part in the power control

Family

Application61/972,385Us provisional application · filed 30 Mar 2014
Application15/127,715Continuation · filed 20 Sep 2016
Application16/803,296Continuation
US 10,624,076 B2Related patent
US 10,897,757 B2Related patent
US 2018/0176892 A1Published application
US 2020/0267702 A1This patent

From the US filing history. Foreign family members aren’t listed.

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