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Method and device for outer loop power control of enhanced physical uplink channel

A technology of outer loop power control and enhanced physics, applied in power management, wireless communication, electrical components and other directions, can solve the problem of no E-PUCH outer loop power control method and so on

Inactive Publication Date: 2012-08-22
CHINA ACAD OF TELECOMM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] At present, in the TDD uplink enhancement technology, there is no specific E-PUCH outer loop power control method

Method used

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  • Method and device for outer loop power control of enhanced physical uplink channel
  • Method and device for outer loop power control of enhanced physical uplink channel
  • Method and device for outer loop power control of enhanced physical uplink channel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0175] In the methods described in Embodiment 1 and Embodiment 2, the NodeB adjusts the target signal-to-interference ratio required for transmitting the data block according to the target block error rate of the transmitted new data block, thereby realizing the outer loop power control of the E-PUCH . These two methods adjust the target SIR in units of data blocks, but do not fully consider the requirements of each MAC-d flow data in the data block. Therefore, adjusting the target SIR at NodeB can only realize the E - Coarse adjustment of PUCH outer loop power, but this method is all completed in NodeB, which can save the overhead of RRC signaling.

Embodiment 3

[0176] In the method described in Embodiment 3, the outer loop power control of the E-PUCH is realized by adjusting the power offset attribute of each MAC-d flow data in the data block in the SRNC. This method needs to comprehensively consider the requirements of each MAC-d flow data, and calculate and adjust the power offset attributes of each MAC-d flow data, so as to realize the fine adjustment of the E-PUCH outer loop power. In this method, the HARQ profile needs to be reconfigured to the UE and the NodeB through signaling, so additional signaling overhead is required, and the adjustment period is relatively long.

[0177] According to the actual application environment and specific requirements, you can only adjust the target signal-to-interference ratio, or only adjust the power offset attribute of each MAC-d flow data in the data block, or adjust the power bias attribute of each MAC-d flow data in the data block. The power bias property adjusts the target signal-to-inte...

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Abstract

The invention discloses a method for outer loop power control of an enhanced physical uplink channel (E-PUCH), which comprises steps of during every preset adjustment period, counting the number of new data blocks in transmission error, and calculating transmission block error rate of the new data blocks; raising signal interference ratio of targets when the transmission block error rate of the new data blocks is higher than a first preset value; and lowering the signal interference ratio of targets when the transmission block error rate of the new data blocks is smaller than a second preset value. The invention also discloses a device for the outer loop power control of the E-PUCH. The method and the device are provided based on existing rough frameworks for the outer loop power control of the E-PUCH, and according to the method and the device, technicians in the field can achieve the outer loop power control of the E-PUCH.

Description

[0001] This application is a divisional application with an application date of January 13, 2007, an application number of 200710063436.5, and an invention titled "Outer Loop Power Control Method and Device for Uplink Enhanced Physical Channel". technical field [0002] The invention relates to the technical field of uplink enhancement in a time division duplex (TDD) system, in particular to an outer loop power control method and device in the uplink enhancement technology. Background technique [0003] In order to improve the throughput of network data transmission, improve cell coverage, and reduce data transmission delay, time division duplex (TDD) system introduces HSUPA technology. In the HSUPA technology, an uplink enhanced data transmission channel (E-DCH, Enhanced Dedicated Transport Channel) is introduced, and a physical channel corresponding to the E-DCH is an uplink enhanced physical channel (E-PUCH, Enhanced Uplink Physical Channel). [0004] Among related techno...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W52/12H04W52/24
Inventor 朱向前李楠
Owner CHINA ACAD OF TELECOMM TECH