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Method for realizing HSUPA external ring power control

A technology of outer loop power control and implementation method, applied in the field of outer loop power control of HSUPA, can solve problems such as increasing uplink interference, and achieve the effect of easy method and good throughput performance

Inactive Publication Date: 2007-03-07
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

At the same time, since the method of increasing the power will increase the uplink interference, the uplink interference will also affect the way to adjust the residual BLER

Method used

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  • Method for realizing HSUPA external ring power control
  • Method for realizing HSUPA external ring power control
  • Method for realizing HSUPA external ring power control

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0052] The present invention will be further described in detail below in conjunction with the accompanying drawings and the embodiment of HSUPA outer loop power control.

[0053] Accompanying drawing 1 illustrates the overall flowchart of HSUPA power control.

[0054] In this example, UE transmits DCH and E-DCH, and DCH performs power control according to the R99 protocol: Node B uses DPCCH SIR to perform inner loop power control, and RNC uses DCH BLER to perform outer loop power control.

[0055]Node B reports the number of PDU transmissions to the RNC, and also reports the measured cell RTWP to the RNC, and the RNC uses the PDU and retransmission information to calculate the target BLER and target residual BLER of the E-DCH; then the RNC uses the target BLER, target residual BLER and RTWP adjusts the power offset and the maximum number of retransmissions; finally, the RNC sends an RRC command to the UE to reconfigure the power offset and the maximum number of retransmission...

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Abstract

This invention discloses one mobile communication system HUSPA outer ring power control method, which comprises the following steps: basic station reporting agreement data unit PDU to test small area wide band total power RTWP to RNC by use of PDU or BLER and remaining BLER; then using RNC by use of BLER to adjust power bias displacement and maximum coils number; then sending RRC order to UE of E-DCH power displacement and maximum coils to re-matching assistant UE and TFC selection to fulfill outer ring control.

Description

technical field [0001] The invention belongs to an outer loop power control method of an uplink physical channel with ARQ retransmission in a mobile communication system, and is particularly aimed at the outer loop power control of HSUPA (uplink enhanced channel) in a WCDMA system. Background technique [0002] In R99, the outer loop power control is carried out in the RNC (Radio Network Controller), and the user configures different target BLER (block error rate) for different service types, and the Node B (base station) controls each DCH (dedicated channel) TTI (Transmission Time Interval) performs CRC (Cyclic Redundancy Check) check and reports the result to RNC, and RNC compares the BLER of the data channel with the target BLER by reporting the information. [0003] If the BLER is greater than the target BLER, the RNC increases the SIRtarget (target signal-to-interference ratio) by one step; if the BLER is smaller than the target BLER, the RNC decreases the SIRtarget by ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/005
Inventor 向涛
Owner ZTE CORP
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