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External ring power control method and device of uplink enhanced physical channel

A technology of outer loop power control and enhanced physics, applied in transmission control/equalization, error prevention/detection using return channel, transmission system, etc., can solve the problem of no E-PUCH outer loop power control method, etc.

Inactive Publication Date: 2012-10-10
CHINA ACAD OF TELECOMM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] 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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  • External ring power control method and device of uplink enhanced physical channel
  • External ring power control method and device of uplink enhanced physical channel
  • External ring power control method and device of uplink enhanced physical channel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0209] 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

[0210] 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.

[0211] 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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PUM

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Abstract

The invention discloses an E-PUCH outer ring power control method, which comprises the following steps that: a network side receives a frame protocol FP and judges whether HARQ failure indication information of MAC-d stream data exists in the FP or not; when the HARQ failure indication information of the MAC-d stream data exists in the FP, the number of the HARQ failure indication information of the MAC-d stream data is counted in a preset first adjusting period, and power bias attributes of the MAC-d stream data are adjusted according to the number of the HARQ failure indication information;when the HARQ failure indication information of the MAC-d stream data does not exist in the FP, retransmission ratios of various pieces of MAC-d stream data are counted in a preset second adjusting period, and the power bias attributes of various pieces of MAC-d stream data are correspondingly adjusted. The invention also discloses an E-PUCH outer ring power control device. The invention providesthe more concrete E-PUCH outer ring power control method and device on the basis of the prior E-PUCH outer ring power control rough frame, and technologists of the field can realize control of E-PUCHouter ring power according to the method and the device provided by the invention.

Description

technical field [0001] 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 [0002] 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). [0003] Among related technologies of HSUPA, the uplink power control technology is particularly important. In the uplink, in order to keep the uplink interference at a certain level, it is necessary to control and adjust the uplink transmission power of the user equipment (...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/005H04L1/00H04L1/18H04L29/06
CPCY02D30/70
Inventor 朱向前李楠
Owner CHINA ACAD OF TELECOMM TECH