Check patentability & draft patents in minutes with Patsnap Eureka AI!

Communication method and device in TDD (Time Division Duplex) system

A communication method and technology of communication equipment, applied in the direction of multi-frequency code system, duplex signal operation, etc., can solve the problem of high reception complexity of mobile stations, achieve the effects of reducing overhead, solving excessive reception complexity, and improving performance gain

Inactive Publication Date: 2011-01-26
CHONGQING WIRELESS OASIS COMM TECHCO
View PDF2 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In addition, the present invention can solve the problem of too high reception complexity of the mobile station through the minimum subband system (MBSS) scheme

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
  • Communication method and device in TDD (Time Division Duplex) system
  • Communication method and device in TDD (Time Division Duplex) system
  • Communication method and device in TDD (Time Division Duplex) system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] Figure 1a It shows the frame structure of the present invention for wireless communication with one 5ms wireless half-frame as the switching period. exist Figure 1a In , the two 5ms half-frame structures before and after are exactly the same. In the previous 5ms half-frame, the following fields are included:

[0037] Downlink control domain DwCR, this domain is mainly used to place all control channels, including downlink synchronization channel, downlink broadcast channel, and downlink control channel. In the DwCR domain, CRS is used as a reference signal for demodulation. Except for the downlink synchronization channel, all other control channels use the same number of antennas, such as 1, 2, 4 and so on.

[0038] The first downlink shared domain DwSR0 does not necessarily exist. It is mainly used to place the user's downlink sending information. The demodulation reference signal in the DwSR0 domain is mainly DRS, that is, the reference signal and the data part ...

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 discloses a communication method in a TDD (Time Division Duplex) system. A TDD frame structure comprising a downlink control domain, a downlink share domain, an uplink and downlink transmission protecting interval and an uplink share domain is used for communication; the frame structure supports variable terminal minimum working bandwidth; each minimum working bandwidth can be same or different; different minimum working bandwidths are provided with a synchronous channel, a broadcast channel and a control and data channel respectively and independently; and different users can be accessed into one or more minimum working bandwidths according to self working capability. In addition, the frame structure provided by the invention can be completely compatible with a TD-LTE (Time Division-Long Term Evolution) frame structure under specific configuration.

Description

technical field [0001] The invention relates to a communication method and device in a TDD system, in particular to a wireless frame structure for transmission in a wireless mobile communication system. Background technique [0002] Wireless mobile communication systems, especially new generation wireless communication systems, such as Long Term Evolution (LTE) of the Third Generation Partnership Project (3GPP), have designed their own frame structures. For the TD-LTE system, due to the frame structure design compatible with FDD, it is not a frame structure optimized for TDD. The basic transmission time interval (TTI) of the LTE system is a subframe (subframe), and the duration is 1 ms. In each TTI, 1 to 4 symbols are reserved from the very beginning as symbols where control information exists. That is to say, the service information of each subframe is controlled and scheduled by the control information of 1 to 4 symbols at its head. This design seems to be able to achie...

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
IPC IPC(8): H04L5/14H04L27/26
Inventor 段世平黎超肖业平焦现军
Owner CHONGQING WIRELESS OASIS COMM TECHCO
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com