Supercharge Your Innovation With Domain-Expert AI Agents!

Coordinated multi-point pairing method and device

A multi-point cooperative and cooperative base station technology, applied in the field of communication, can solve problems such as waste of overhead, cooperative pairing is not the best pairing, etc., to achieve the effect of improving accuracy, improving throughput and spectrum efficiency, and improving performance

Active Publication Date: 2018-02-06
ZTE CORP
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention proposes a method and device for coordinated multi-point pairing to solve the technical problems in the prior art that the cooperative pairing is not optimal due to system factors and the WCI reporting method leads to waste of overhead

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
  • Coordinated multi-point pairing method and device
  • Coordinated multi-point pairing method and device
  • Coordinated multi-point pairing method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] This embodiment provides a coordinated multi-point pairing method, which is applied to a CoMP multi-antenna based communication system and executed by a UE. Such as figure 1 As shown, the method includes:

[0056] Step S110: The target UE estimates the signal channel and interference channel at this moment;

[0057]Step S120: the target UE calculates the PMI according to the signal channel;

[0058] Step S130: the target UE corrects the interference channel at this moment;

[0059] In this step, the interference channel at this moment is corrected by smoothing. For example, the interference channel at this moment is corrected according to the interference channel at this moment and the interference channel at the previous moment, or the interference channel at this moment is corrected according to the interference channel at the previous two moments, or the interference channel at this moment is corrected according to the interference channel at the previous three mo...

Embodiment 2

[0065] This embodiment provides a coordinated multi-point pairing method, which is applied to a CoMP-based multi-antenna communication system and executed by a UE, specifically in the scenario of two users in two cells, as Figure 2A shown. Wherein, the base station side uses 4 antennas to transmit data, and the UE side uses 2 antennas to receive data. UE1 belongs to eNB1, UE2 belongs to eNB2, UE does not move or handover between cells, and only moves within the cell. UE1 and UE2 are allocated the same frequency resources, and eNB1 and eNB2 exchange WCI information through the X2 interface. Such as Figure 2B As shown, the method includes:

[0066] Step 210: The target UE estimates the signal channel and the interference channel at this moment.

[0067] In this step, for the eNB1 of the local cell, the user UE1 of the local cell estimates that the signal channel between the eNB1 of the local cell is H 11 , the interference channel between UE2 in the neighboring cell and e...

Embodiment 3

[0100] This embodiment provides a coordinated multi-point pairing device, such as a UE. Such as image 3 As shown, the device includes:

[0101] An estimation unit 310, configured to estimate a signal channel and an interference channel at this moment;

[0102] A correction unit 320, configured to correct the interference channel at this moment;

[0103] A calculation unit 330, configured to calculate the PMI according to the signal channel; and calculate the WCI according to the corrected interference channel;

[0104] The sending unit 350 is configured to report the precoding information to the local cell and the WCI to the corresponding base station of the local cell, and the corresponding serving base station exchanges the WCI to the cooperative base station for the cooperative base station to enter the coordinated multi-point pairing process.

[0105] The correction unit 320 corrects the interference channel at this moment by smoothing. For example, the interference c...

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 device for coordinated multi-point pairing. Among them, the coordinated multi-point pairing method includes: the target user end estimates the signal channel and the interference channel at this moment and calculates the signal precoding matrix index PMI according to the signal channel; Calculate the worst pairing precoding index WCI; the target UE reports the PMI and WCI to the corresponding serving base station to initiate a cooperative pairing request, and the serving base station exchanges the WCI to the cooperative base station for the cooperative base station to enter the coordinated multi-point pairing process. The invention can effectively reduce the influence of system time delay and time sequence on cooperative pairing, make the paired PMI and WCI more match, improve the accuracy of precoding calculation, and better improve the throughput and spectral efficiency of cell edge users.

Description

technical field [0001] The present invention relates to the field of communications, in particular to a coordinated multi-point pairing method and device. Background technique [0002] In the 3GPP Long Term Evolution-Advanced (LTE-A) system, Coordinated Multiple Point (CoMP) technology is a new technology that is entering the standard process. This technology is mainly aimed at cell edge users. Through the interaction of mobile user (UE, User Equipment) channel information between adjacent base stations (evolved Node B, eNB), adjacent base stations adopt certain interference avoidance strategies for interfered users or multiple base stations Mobile users make joint transmissions. This technology can greatly reduce cell edge interference, improve cell edge throughput and cell spectrum efficiency. [0003] In a CoMP multi-antenna system, the bit overhead of directly feeding back the channel response matrix is ​​too large. Performing such as Singular value decomposition (SVD...

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): H04B7/06H04B7/08
Inventor 金涛王衍文王永强谢赛锦
Owner ZTE CORP
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