Uplink power control method and system of LTE (Long Term Evolution) system

A technology of power control and power authorization, applied in the field of communication, can solve the problems that the maximum utilization of transmission power cannot be guaranteed, and system performance is not considered.

Inactive Publication Date: 2012-02-08
ZTE CORP
View PDF5 Cites 45 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The domestic patent application number is 200810096198.2, and the invention name is "path loss compensation factor configuration method and device". A method for adjusting the path loss compensation coefficient for the LTE system is given. Considering the interference factor, the base station adjust

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
  • Uplink power control method and system of LTE (Long Term Evolution) system
  • Uplink power control method and system of LTE (Long Term Evolution) system
  • Uplink power control method and system of LTE (Long Term Evolution) system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] The present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0035] The purpose of the uplink power control method of the present invention is to dynamically adjust the path loss compensation coefficient according to the path loss of the user equipment UE under the restriction of adjacent cell interference, so as to determine the power authorization on the unit RB when the adjacent cell interference is considered, while taking into account For resource allocation, a reasonable number of RBs and MCS (Modulation and Code Scheme, modulation and coding scheme) are determined according to the power authorization and notified to the UE to adjust the transmission power, which improves the performance of the system.

[0036] Firstly, the content related to the uplink power control of the LTE system is introduced.

[0037] The uplink power control of the LTE system is as follows: all UEs in the cell...

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 an uplink power control method and a system of an LTE (Long Term Evolution) system, wherein the method comprises the following steps: the average interference lower limit M of user equipment on a neighbor area is determined by a base station, the average interference upper limit M' of the user equipment on the neighbor area is allocated by the base station, and then a link loss compensation coefficient beta of the base station is determined according to the average interference upper limit and the average interference lower limit of the user equipment on the neighbor area and the link loss of the user equipment; power authorized delta'TF(i) on a unit resource block when the neighbor area is interfered is computed and considered by the base station according to the link loss compensation coefficient beta, and then resource block number MPUSCH(i) occupied by a physical uplink shared channel (PUSCH) and a modulation coding mode are obtained according to the power authorized delta'TF(i); the difference f(i) of the resource block number, the modulation coding mode, the actual signal to interference and noise ratio and the target signal to interference and noise ratio is issued to the user equipment through uplink authorization, the deltaTF(i) is obtained through computation and lookup by the user equipment according to the resource block number and the modulation coding mode, and then the transmission power is adjusted by the user equipment according to the deltaTF(i), the f(i) and the MPUSCH(i).

Description

technical field [0001] The invention belongs to the technical field of communications, and in particular relates to a method and system for uplink power control of an LTE system. Background technique [0002] Since 3GPP (3rd Generation Partnership Project) LTE (Long Term Evolution, Long Term Evolution) uplink adopts single-carrier frequency division multiple access (Single-Carrier Frequency Division Multiple Access, SC- FDMA) technology, the uplink signals of different user equipment (User Equipment, UE) in a cell are mutually orthogonal, so there is no code division multiple access (CDMA) system that performs power control due to the near-far effect necessity. [0003] LTE uplink power control is mainly used to compensate channel path loss and suppress inter-cell interference. The power control mechanism of inter-cell interference suppression is different from that of single-cell power control. Single-cell power control is only used for path loss compensation. When a UE'...

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): H04W52/14H04W52/24
CPCH04W52/244H04W52/146
Inventor 杨晓玉赵刚
Owner ZTE CORP
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