Method for transmitting and receiving d2d signal in wireless communication system, and apparatus therefor

a wireless communication system and wireless communication technology, applied in the field of wireless communication systems, can solve the problem of inability to receive a discovery signal transmitted from a specific neighbor, and achieve the effect of efficient signal transmission/reception

Inactive Publication Date: 2019-02-07
LG ELECTRONICS INC
View PDF10 Cites 31 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0018]According to an embodiment of the present invention, D2D signal transmission / reception can be efficiently performed in a wireless communication system.
[0019]Effects obtainable from the present invention are non-limited by the above mentioned effect. And, other unmentioned effects can be clearly understood from the following description by those having ordinary skill in the technical field to which the present invention pertains.

Problems solved by technology

It may also be impossible for the UE to receive a discovery signal transmitted from a specific neighbor cell due to the distance from the cell.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for transmitting and receiving d2d signal in wireless communication system, and apparatus therefor
  • Method for transmitting and receiving d2d signal in wireless communication system, and apparatus therefor
  • Method for transmitting and receiving d2d signal in wireless communication system, and apparatus therefor

Examples

Experimental program
Comparison scheme
Effect test

example 1-1

[0208]According to Embodiment 1 of the present disclosure, the SRXCH_D2D RX UE should blind-search an area ranging from ‘SF#N−w1’ to ‘SF#N+w1’, for neighbor-cell D2DSS reception (or detection) (i.e., in the case where a neighbor-cell D2DSS resource is configured in serving-cell SF#N).

[0209]For this operation, when the SRXCH_D2D RX UE receives a neighbor-cell D2DSS (linked to a preset or signaled neighbor-cell discover resource pool), the SRXCH_D2D RX UE may be configured to assume that not only i) a DL SF(s) overlapped in the time domain at least partially (i.e., partially or fully) with an area ranging from ‘SF#N-CEILING(w1)’ to ‘SF#N+CEILING(w1)’, but also ii) a DL SF(s) overlapped in the time domain at least partially (i.e., partially or fully) with one SF preceding or following the area ranging from ‘SF#N-CEILING(w1)’ to ‘SF#N+CEILING(w1)’ (i.e., an SF(s) for ensuring a time required for carrier (or frequency band) switching of a single Rx chain) is an INV_DL SF(S).

[0210]In othe...

example 1-2

[0223]According to Embodiment 1 of the present disclosure, if i) the difference between a preset or signaled neighbor-cell D2DSS resource offset and a preset or signaled neighbor-cell discovery resource pool offset or ii) the difference between ‘SF#N+CEILING(w1)+1’ (or ‘SF#N+CEILING(w1)’) for configuring an INV_DL SF(s) related to neighbor-cell D2DSS reception and ‘starting SF-CEILING(w1)−1’ of a neighbor-cell discovery pool (or ‘starting SF-CEILING(w1)’ of the neighbor-cell discovery pool) for configuring an INV_DL SF(s) related to neighbor-cell discovery signal reception, as described in Example 1-1, is smaller than a preset or signaled threshold, it may be configured that a DL SF(s) overlapped in the time domain at least partially (i.e., partially or fully) with an area between ‘SF#N+CEILING(w1)+1’ (or ‘SF#N+CEILING(w1)’) for configuring an INV_DL SF(s) related to neighbor-cell D2DSS reception and ‘starting SF-CEILING(w1)−1’ of a neighbor-cell discovery pool (or ‘starting SF-CEIL...

example 4-1

[0253]For example, if an interference measurement resource (IMR) related to calculation / derivation of (periodic / aperiodic) CSI reported at a specific time instant resides in an INV_DL SF, the SRXCH_D2D RX UE may be configured to assume that the IMR is not valid. It may be configured that a CSI report is transmitted / calculated (re)using an IMR included in a non-INV_DL SF closest to the INV_DL SF before the INV_DL SF, the CSI report is omitted, or CSI of a predefined specific value (e.g., out-of-range (OOR)) is reported.

[0254]For example, if a CSI reference resource related to calculation / derivation of (periodic / aperiodic) CSI reported at a specific time instant resides in an INV_DL SF, the SRXCH_D2D RX UE may be configured to assume that the CSI reference resource is not valid. It may be configured that the CSI report is transmitted / calculated (re)using / (re)assuming, as a CSI reference resource, a DL SF which is at once a non-INVL_DL_SF closest to the INV_DL SF (or the earliest non-I...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The present invention relates to a method for a D2D terminal for receiving a D2D discovery signal comprising a plurality of radio frequency chains in a wireless communication system. Specifically, the method comprises the steps of: a D2D terminal receiving a pool configuration indicating resources for D2D discovery; and switching on-off state of a D2D receiver spare chain, wherein an interruption point corresponding to the on-off switching of the D2D receiver spare chain is determined in accordance with the size of a window linked to a resource for carrying out D2D discovery.

Description

TECHNICAL FIELD[0001]The present invention relates to a wireless communication system, and more particularly, to a method of transmitting / receiving a D2D signal in a wireless communication system and apparatus therefor.BACKGROUND ART[0002]A 3rd generation partnership project long term evolution (3GPP LTE) (hereinafter, referred to as ‘LTE’) communication system which is an example of a wireless communication system to which the present invention can be applied will be described in brief.[0003]FIG. 1 is a diagram illustrating a network structure of an evolved universal mobile telecommunications system (E-UMTS) which is an example of a wireless communication system. The E-UMTS is an evolved version of the conventional UMTS, and its basic standardization is in progress under the 3rd generation partnership project (3GPP). The E-UMTS may be referred to as a long term evolution (LTE) system. Details of the technical specifications of the UMTS and E-UMTS may be understood with reference to...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(United States)
IPC IPC(8): H04W8/00H04W48/16H04W4/70H04W76/27H04W76/28H04W56/00H04L1/18H04L5/00H04W72/14H04W72/04H04L5/14
CPCH04W8/005H04W48/16H04W4/70H04W76/27H04W76/28H04W56/001H04L1/1812H04L5/0055H04W72/14H04W72/0453H04W72/0446H04L5/14H04W80/02H04W48/12H04W4/06H04L5/0053H04L5/0048Y02D30/70H04J11/00H04W72/23
Inventor LEESEO, HANBYUL
Owner LG ELECTRONICS INC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap