Method and device for selecting time advanced-adjustment reference nodes in CoMP (coordinated multi-point) uplinks

A reference node and time advance technology, applied in network traffic/resource management, access restrictions, electrical components, etc., can solve problems such as high communication traffic overhead, achieve the effect of simple and easy method, and reduce the amount of data interaction

Active Publication Date: 2012-10-03
INST OF COMPUTING TECH CHINESE ACAD OF SCI
View PDF2 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] However, the method in Document 1 has the following disadvantages: in the CoMP coordinated scheduling / shaped transmission mode, the AP closest to the UE may not be the main serving AP serving the UE (that is, the AP that sends service information to the UE )
In this way, the traffic overhead between APs is undoubtedly very large.

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 device for selecting time advanced-adjustment reference nodes in CoMP (coordinated multi-point) uplinks
  • Method and device for selecting time advanced-adjustment reference nodes in CoMP (coordinated multi-point) uplinks
  • Method and device for selecting time advanced-adjustment reference nodes in CoMP (coordinated multi-point) uplinks

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0044] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0045] In order to better understand the present invention, two transmission modes of downlink CoMP are briefly introduced first: joint processing (Joint Processing, JP) and coordinated scheduling / beamforming (Coordinated Scheduling / Beamforming, CS / CB).

[0046] image 3 A schematic diagram of the joint processing transfer mode is given. Such as image 3 As shown, in the joint processing JP mode, all APs serving the UE share the service information and channel information of the UE, and jointly serve the UE.

[0047] Figure 4 Shown is a schematic diagram of the Coordinated Schedul...

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 and a device for selecting time advanced-adjustment reference nodes in CoMP (coordinated multi-point) uplinks. The method includes firstly determining a current transmission model of a downlink CoMP; selecting an access point nearest to a user as a time advanced-adjustment reference node if the transmission mode is determined as a jointly processing mode; or selecting a main service access point of a user equipment as the time advanced-adjustment reference node if the transmission mode is determined as a coordinate dispatch/shaping mode. By utilizing different methods to select time advanced-adjustment reference nodes according to different transmission modes, data interaction quantity among base stations is greatly reduced. Further, the method is simple and easy, and no modification is carried on hardware of existing communication mechanisms.

Description

technical field [0001] The present invention relates to a coordinated multi-point system (CoMP, Coordinated Multi-point) of wireless communication, in particular to the selection of a time advance adjustment reference node. Background technique [0002] In order to meet the technical indicators of the next-generation mobile communication system IMT-Advanced (International Mobile Telecommunications-Advanced), the LTE-Advanced (Long Term Evolution-Advanced, next-generation long-term Evolution technology) scheme puts forward higher requirements on cell average throughput, especially cell edge user throughput than LTE system. However, although the Orthogonal Frequency Division Multiple Access (OFDMA) scheme adopted by LTE and LTE-Advanced effectively eliminates intra-cell interference through orthogonal subcarriers, it cannot alleviate the inter-cell interference suffered by edge users. Interference, which makes inter-cell interference a bottleneck restricting system capacity i...

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): H04W28/16H04W48/20
Inventor 周一青陈海华石晶林史岗
Owner INST OF COMPUTING TECH CHINESE ACAD OF SCI
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