Dynamic selection multi-relay station cooperative transmission method

A technology of coordinated transmission and site, applied in the direction of transmission system, radio transmission system, electrical components, etc., can solve the problem that the number of relay sites is limited to one, the receiver cannot receive data correctly, and the data transmission rate cannot be obtained, etc. problem, to achieve the effect of effective wireless resources, reduce signaling interaction and overhead, and improve information transmission rate

Inactive Publication Date: 2011-07-13
SHANGHAI JIAO TONG UNIV
View PDF5 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] After searching the existing technology, it is found that the premise involved in the selection of relay sites is often the condition that the total power of the system is fixed, and this restriction limits the number of relay sites to be selected to only one
For some nomadic hotspot cells or low SINR environments such as cell boundaries, when only one relay site is used for coordinated transmission, the reliability of the transmission is usually still not guaranteed, that is, the transmitted data cannot be received correctly at the receiving end , or cannot obtain the required data transfer rate

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
  • Dynamic selection multi-relay station cooperative transmission method
  • Dynamic selection multi-relay station cooperative transmission method
  • Dynamic selection multi-relay station cooperative transmission method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] The embodiments of the present invention are described in detail below. This embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following implementation example.

[0026] This embodiment includes the following steps:

[0027] In the first step, the base station sends an indication signal to the mobile station before sending data, and when the mobile station receives the indication signal, it sends a detection pilot information signal to the base station and the relay station at the same time, for responding to the instructions of the base station and for the base station and the relay station to monitor.

[0028] The sounding pilot information is a specific carrier frequency, which has the basic characteristics of a wave, and has a specific phase and amplitude.

[0029] In t...

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 dynamic selection multi-relay station cooperative transmission method belonging to the technical field of wireless communication. By the scheme that only one relay is selected to participate in cooperative transmission, the reception signal to noise ratio of a user can be improved, thereby reducing the error rate and improving the transmission reliability and the servicequality. Because a timer scheme is adopted in the invention to substitute parameter report, the signaling expense can be effectively reduced, and the wireless resource is saved. The dynamic selectionmulti-relay station cooperative transmission method disclosed by the invention is used for cooperative transmission of downlink data, and improves the data transmission rate for the user in an environment with a low signal to interference and noise ratio under the condition of minimizing the utilization of frequency resources and system total power.

Description

technical field [0001] The present invention relates to a method in the technical field of wireless communication, in particular to a method for dynamically selecting multi-relay station cooperative transmission in a low signal-to-interference-noise ratio environment. Background technique [0002] The next-generation wireless communication system puts forward very high system capacity requirements, but the large bandwidth available to obtain this capacity may only be obtained in higher frequency bands, and such high-frequency bands have relatively large path loss and penetration loss, making it difficult to Achieve good coverage. This results in poor received signal quality for cell edge users. The proposal of the relay site can better solve the requirements of the next generation wireless communication system on capacity and coverage. When discussing the practical application of the relay station, the selection of the relay station and the coordinated transmission of the ...

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): H04W24/10H04W72/08H04B7/155
Inventor 赵潇琛刘涛戎蒙恬刘文江
Owner SHANGHAI JIAO TONG UNIV
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