Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method and system for time-division duplexing transmission

A time-division duplex, transmission system technology, applied in network traffic/resource management, electrical components, wireless communication, etc., can solve the problems of increased device cost, difficult control, waste of boundary spectrum resources and/or device cost, etc. The effect of mining utilization

Inactive Publication Date: 2015-04-01
POTEVIO INFORMATION TECH CO LTD
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the setting of the guard bandwidth wastes the spectrum resources at the boundary of the TDD frequency band to a certain extent, and there are a wide range of local frequency bands idle in wireless communication; although adjacent channel leakage control is necessary, strict adjacent channel leakage control Will lead to an increase in the cost of the device
[0005] To sum up, in the prior art, TDD transmission has the problems of wasting boundary spectrum resources and / or the device cost is not easy to control

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 and system for time-division duplexing transmission
  • Method and system for time-division duplexing transmission
  • Method and system for time-division duplexing transmission

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] The basic principle of the solution of the present invention is: the uplink and downlink spectrum of the TDD system adopts a non-completely symmetrical transmission mode, and in some TDD edge frequency bands, only uplink or downlink transmission is adopted, that is, the transmission mode of intermittent frames is adopted. In particular, the sending time of the intermittent frame is non-continuous, and the frame length is variable and may be shorter than the normal frame length. Specifically, the TDD frequency band is further subdivided into a first edge frequency band, a central frequency band and a second edge frequency band. The first edge frequency band is the uplink intermittent frame, which is only used to transmit uplink data; the second edge frequency band is the downlink intermittent frame, which is only used to transmit downlink data; and the central frequency band transmits both uplink data and downlink data. like figure 2 As shown, a TDD frequency band is 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 invention provides a method for TDD (time-division duplexing) transmission. A TDD frequency band is divided into a first marginal frequency band, a central marginal frequency band and a second marginal frequency band. The method includes the steps: A, monitoring adjacent channel leakage of other wireless communication systems of an adjacent frequency band of the first marginal frequency band and / or the second marginal frequency band; B, comparing the adjacent channel leakage with a preset threshold by a base station, and determining the transmission time, the power, the frame length and the width and the position of a frequency sub-band of the corresponding marginal frequency band according to comparing results; C, enabling the base station to adjust the frame length, the sub-band width and descending transmission time and descending power of the corresponding marginal frequency band and to inform user equipment of the ascending transmission time, the ascending power, the frame length and the width and the position of the frequency sub-band of the corresponding marginal frequency band; and D, enabling the user equipment to adjust the ascending transmission time and the ascending power, the frame length and the width and the position of the frequency sub-band of the corresponding marginal frequency band according to the notice from the base station. The invention further provides a system for TDD transmission.

Description

technical field [0001] The present invention relates to the technical field of mobile communication, in particular to a time division duplex (TDD, Time Division Duplexing) transmission method and system. Background technique [0002] In a mobile communication system in TDD mode, uplink and downlink communications between a base station and a user equipment (UE) use different time slots of the same frequency channel (ie carrier). The feature of the frequency division duplex (FDD) mode is to receive and transmit signals on two separated symmetrical frequency channels, and use the guard frequency band to separate the receiving and transmitting channels. [0003] In the existing wireless frequency resource allocation scheme, many TDD frequency bands are set in adjacent frequency bands, and many TDD frequency bands are allocated in the middle isolation area of ​​FDD uplink and downlink frequencies. like figure 1 As shown, TDD frequency bands 103 and 104 are set in the middle is...

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): H04W24/00H04W28/18
Inventor 易三军
Owner POTEVIO INFORMATION TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com