Unlock instant, AI-driven research and patent intelligence for your innovation.

Terminal transmission power control method and device

A technology for transmitting power and controlling terminals, which is applied in the field of communications and can solve problems such as mismatching channel transmission capabilities.

Active Publication Date: 2015-04-22
DATANG MOBILE COMM EQUIP CO LTD
View PDF5 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Embodiments of the present invention provide a method and device for controlling terminal transmission power to solve the problem in the prior art that the actual transmission power control result of the terminal does not match the actual channel transmission capability

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
  • Terminal transmission power control method and device
  • Terminal transmission power control method and device
  • Terminal transmission power control method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0061] In order to solve the problem in the prior art that the actual transmission power control result of the terminal does not match the actual channel transmission capability, the present invention provides a method and device for controlling the transmission power of the terminal. In subframe i, the base station bases the transmission rate of the terminal on The sum of the change value and the power control word TPC sent to the terminal within the specified time period is used to calculate the transmission rate impact factor; when the PHR is not greater than zero through the power headroom PHR reported by the terminal, it is further judged whether the transmission rate of the terminal is affected The factor is less than the first threshold value or the sum of TPCs is equal to 0; when it is determined that the transmission rate influencing factor of the terminal is less than the first threshold value or the sum of TPCs is equal to 0, a TPC is issued to lower the transmit powe...

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 relates to the field of communication, in particular to a terminal transmission power control method and device. The method and device aim to lower network interference among terminals and meanwhile maintain a higher uplink rate. According to the method, in a subframe i, a base station calculates transmission rate influence factors; when the power headroom (PHR) reported by the terminal determines that the PHR is equal to or smaller than zero, whether the transmission rate influence factors of the terminals are smaller than a first threshold value or not or whether the TPC sum is equal to zero or not is further judged; when it is determined that the transmission rate influence factors are smaller than the first threshold or the TPC sum is equal to zero, the TPC is issued to lower the transmission power of the terminals, the problem that the actual transmission power control result of the terminals is unmatched with the actual channel transmission capacity is solved, the purposes that network interference among the terminals is lowered while a higher uplink rate is maintained are achieved, and the transmission power of the terminals and the uplink rate reach a proper balance point.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method and device for controlling terminal transmission power. Background technique [0002] In the Long Term Evolution (LTE) system, the terminal estimates the basic transmit power value from the expected received power value, path loss value, number of scheduled physical resource blocks (Physical Resource Block, PRB), and modulation and coding levels. The downlink control channel (Physical Downlink Control Channel, PDCCH) carries the power control command word (Transmit Power Control, TPC) to control the terminal to increase, decrease or maintain the transmit power, that is, the terminal is based on the estimated base transmit power value and the received TPC Determine the actual transmit power, where TPC can have multiple values ​​according to the format of the DCI in the PDCCH, see the protocol 3GPP TS 36.213 for details. [0003] In the prior art, for a given wireless ch...

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): H04W52/20H04W52/26
CPCH04W52/146H04W52/267H04W52/365
Inventor 徐剑超吴兆礼
Owner DATANG MOBILE COMM EQUIP CO LTD