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

A data transmission method and device thereof

A data transmission method and data transmission technology, applied in the field of data transmission methods and equipment thereof, can solve problems such as unfavorable spectrum utilization of TDD systems, and achieve the effect of improving spectrum utilization rate

Active Publication Date: 2014-10-29
DATANG MOBILE COMM EQUIP CO LTD
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In extreme cases, if G1=G2=20MHz, the spectrum that can be used by the TDD system is only 10MHz, which is very unfavorable to the spectrum utilization of the TDD system

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
  • A data transmission method and device thereof
  • A data transmission method and device thereof
  • A data transmission method and device thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] see Figure 4 , is a schematic diagram of a frequency spectrum of a TDD system provided by Embodiment 1 of the present invention. As shown in the figure, the guard interval G1 is the guard interval between the uplink spectrum of the TDD system and the FDD system, and the guard interval G2 is the guard interval between the downlink spectrum of the TDD system and the FDD system. The part U3 in the guard interval G1 will be allocated to the user equipment for uplink transmission of the TDD system, and the part D4 in the guard interval G2 will be allocated to the user equipment for downlink transmission of the TDD system.

[0027] The downlink resource D4 is paired with the uplink resource U3 to form a special uplink and downlink carrier pair in the TDD system. The difference from the general TDD system carrier is that the center frequency points of the uplink resource U3 and the downlink resource D4 are inconsistent, and the bandwidth can be consistent or inconsistent. S...

Embodiment 2

[0032] see Figure 5 , is a schematic diagram of a frequency spectrum of a TDD system provided by Embodiment 2 of the present invention. As shown in the figure, the guard interval G1 is the guard interval between the uplink spectrum of the TDD system and the FDD system, and the guard interval G2 is the guard interval between the downlink spectrum of the TDD system and the FDD system. The U3 in the guard interval G1 and the U4 in the guard interval G2 are used for the uplink transmission of the TDD system, and the D3 in the guard interval G1 and the D4 in the guard interval G2 are used for the downlink transmission of the TDD system.

[0033] In the TDD system after spectrum expansion, the uplink and downlink bandwidths are the same and the frequencies are aligned. Specifically, the bandwidth of the downlink resource D3 is equal to that of the uplink resource U3 and the frequency points are aligned. The downlink resource D3 can be continuous or have a certain interval with the...

Embodiment 3

[0040] see Image 6 , is a schematic diagram of a frequency spectrum of a TDD system provided by Embodiment 3 of the present invention. As shown in the figure, the guard interval G1 is the guard interval between the uplink spectrum of the TDD system and the FDD system, and the guard interval G2 is the guard interval between the downlink spectrum of the TDD system and the FDD system. Part U3 in the guard interval G1 is used for uplink transmission of the TDD system, and part D4 of the guard interval G2 is used for downlink transmission of the TDD system.

[0041] The downlink resource D4 may be continuous or spaced apart from the spectrum of the downlink resource TDD DL2 of the downlink resource TDD system; the downlink resource D4 may be continuous or spaced apart from the frequency spectrum of the FDD system on the right. Similarly, the uplink resource U3 may be continuous or have a certain interval with the uplink resource TDD UL1 of the TDD system on the frequency spectrum...

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

Disclosed are a data transmission method and an apparatus thereof. The method comprises: allocating uplink resources within a guard interval between a TDD system and an FDD system to a user equipment for uplink data transmission, wherein the guard interval resources allocated to the user equipment is temporally synchronous to uplink resources of the TDD system; and / or, allocating downlink resources within the guard interval between the TDD system and the FDD system to the user equipment for downlink data transmission, wherein the guard interval resources allocated to the user equipment is temporally synchronous to downlink resources of the TDD system. The present invention improves the spectrum utilization of the TDD system by using the guard band between the spectrum of the FDD system and the spectrum of the TDD system.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a data transmission method and equipment thereof. Background technique [0002] Today, with the rapid development of wireless communication technology, wireless spectrum is increasingly becoming a precious resource. How to improve the efficiency of spectrum utilization is also a problem that the communication industry has been paying attention to. According to the existing spectrum planning of various countries, the spectrum can be divided into two types: paired spectrum and independent non-paired spectrum. The former is generally used in FDD (Frequency-DivisionDuplex, Frequency Division Duplex) system and needs to be used in pairs for uplink and downlink, while the latter It is generally used in a TDD (Time-Division Duplex, time-division duplex) system, and a TDD system can be operated on a single frequency spectrum. figure 1 A typical spectrum allocation diagram is shown,...

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 Patents(China)
IPC IPC(8): H04W16/12H04B7/26
CPCH04W16/14H04W72/1268
Inventor 肖国军宋月霞潘学明孙韶辉丁昱沈祖康
Owner DATANG MOBILE COMM EQUIP CO LTD