Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for transmitting or receiving mpdcch in wireless communication system supporting mtc, and apparatus therefor

A wireless communication system and machine-type communication technology, applied in wireless communication, machine-to-machine/machine-type communication services, transmission systems, etc., can solve problems such as resource shortage and high-speed service user needs

Pending Publication Date: 2021-03-19
LG ELECTRONICS INC
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the service coverage of mobile communication systems has even been extended to data services as well as voice services, and currently, the explosive growth of traffic has led to resource shortages and user demands for high-speed services, which require advanced mobile communication systems

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 or receiving mpdcch in wireless communication system supporting mtc, and apparatus therefor
  • Method for transmitting or receiving mpdcch in wireless communication system supporting mtc, and apparatus therefor
  • Method for transmitting or receiving mpdcch in wireless communication system supporting mtc, and apparatus therefor

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0488] First Embodiment: Method for Performance Improvement Using the LTE Control Region

[0489] The first embodiment relates to a method of improving channel estimation, synchronization, and / or measurement performance by transmitting RS in the LTE control region, or by adding MPDCCH / PDSCH data additionally transmitting MPDCCH / PDSCH data in the LTE control area to reduce the coding rate. Improved MPDCCH / PDSCH performance method.

[0490] (Method 1): Send RS method

[0491] Method 1 is a cell-specific RS in the LTE control area, such as CRS (except for CRS, which is understood by the LTE or EMTC terminal).

[0492] Additional transmitted RS can be used to improve the MPDCCH / PDSCH channel estimation performance, or can be used to improve measurement accuracy such as RSRP / RSRQ.

[0493] Alternatively, a UE-specific DMRS can be transmitted to the LTE control area.

[0494] DMRS is basically configured to transmit in a time domain / frequency domain used to send a respec...

example 1

[0554] (Example 1) Number of repetition = 4 (i_rep = 0, 1, 2, 3)

[0555] -i_rep = 0: {3, 4, 5}; i_rep = 1: {6, 7, 8}; i_rep = 2: {9, 10, 11}; i_rep = 3: {12, 13, 3}

example 2

[0556] (Example 2) Number of repetition = 8 (i_rep = 0, 1, 2, 3, 4, 5, 6, 7)

[0557] -i_rep = 0: {3, 4, 5}; i_rep = 1: {3, 4, 5}; i_rep = 2: {6, 7, 8}; i_rep = 3: {6, 7, 8}

[0558] -i_rep = 4: {9, 10, 11}; i_rep = 5: {9, 10, 11}; i_rep = 6: {12, 13, 3}; i_rep = 7: {12, 13, 3}

[0559] In Example 1, the set of OFDM symbols copied to the LTE control area and the repeated OFDM symbols are configured to include MPDCCH / PDSCH OFDM symbols as even in the number of repetitions. When the number of repetitions is sufficient as in Example 2, the OFDM symbol set can be configured to enable (OFDM) symbol-level combinations between adjacent subframes. The above examples may have different values ​​depending on the number of symbols included in the control area and repeated transmission. Additionally, the above examples can be similarly applied as values ​​for the redundant symbols used to avoid the repeated transmission.

[0560] The method of using the LTE control region during repetition ...

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 specification provides a method for transmitting an MPDCCH in a wireless communication system supporting MTC. More specifically, the method performed by a base station comprises the stepsof mapping the MPDCCH to resource elements (REs); and transmitting the MPDCCH on the REs to a terminal, wherein the mapping of MPDCCH comprises a step of copying REs used for the MPDCCH in at least one symbol of a second slot of a subframe onto at least one symbol of a first slot of the subframe.

Description

Technical field [0001] The present disclosure relates to a wireless communication system that supports machine type communication (MTC), and more particularly to methods for transmitting and receiving MTC Physical Downlink Control Channel (MPDCCH) and means for supporting this method. Background technique [0002] Mobile communication systems have been developed to provide voice services while ensuring user activity. However, the service coverage of the mobile communication system has even extended to data services and voice services, and currently, the explosive growth of traffic has led to shortage of resources and user needs to high-speed services, which requires advanced mobile communication systems. [0003] The requirements for the next generation of mobile communication systems may include supporting a huge amount of data traffic, a significant increase in the transmission rate of each user, accommodating significantly increased number of connection devices, very low end-t...

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(China)
IPC IPC(8): H04L5/00H04W4/70H04L25/02H04L1/00H04J11/00H04W48/10
CPCH04W4/70H04W48/12H04L5/0053H04L5/005H04L1/08H04L25/0224H04L1/0041H04L1/0067H04L1/0072H04W72/0446H04W72/0453H04W72/1273H04W72/23
Inventor 金哉亨金善旭朴昶焕辛硕珉安俊基梁锡喆黄升溪
Owner LG ELECTRONICS INC