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Method controlling down going power based on ratio of loading andinterference

A technology of power control and load-to-interference ratio, applied in the direction of transmission control/balance, advanced technology, climate sustainability, etc., can solve problems that do not take into account the different influences of the relationship between power drop values, and achieve a simple and fast algorithm Effect

Inactive Publication Date: 2008-05-14
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The purpose of the present invention is to provide a method of downlink power control based on the carrier-to-interference ratio, so as to solve the problem that some existing methods do not take into account the relationship between the current power value and the value of the power reduction to be performed, as well as the power and the carrier-to-interference ratio Different effects on power regulation

Method used

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  • Method controlling down going power based on ratio of loading andinterference
  • Method controlling down going power based on ratio of loading andinterference
  • Method controlling down going power based on ratio of loading andinterference

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Embodiment Construction

[0039] like image 3 As shown, in the initial step S10, the BSC obtains the input parameters required by the algorithm, and then performs step S20 according to the input parameters and judgment criteria to judge whether the downlink power needs to be adjusted. If the downlink power does not need to be adjusted, the BTS is not notified to change the downlink power ,Finish. If the downlink power needs to be adjusted, then enter the judgment step S30, and continue to judge whether to increase the downlink power or reduce the downlink power, if it is necessary to increase the downlink power, then enter step S50, and use the power increase algorithm formula to calculate the new downlink power value. If downlink power needs to be reduced, then enter step S40, adopt power reduction algorithm formula to calculate new downlink power, no matter after step S40 or step S50, enter step S60, notify BTS to change downlink power.

[0040] like figure 2 As shown, the BSC receives the packet...

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Abstract

Based on degree of influence on adjustment of power by value of power and ratio of loading and interference, the invention determines whether adjusting power and calculating value of power adjustment is carried out or not. The invention includes steps: controller of base station obtains input parameter needed by algorithm; then, based on input parameters, determining whether down going power is needed to be adjusted; if no, not informing sendreceiver of base station to change down going power; if yes, determining whether the down going power is needed to lower further; if yes, calculating new power by executing algorithm formula for lowering power; if no, calculating new power by executing algorithm formula for ascending power; finally, sending value for adjusting power to sendreceiver of base station to change down going power. Comparing with current some methods, the disclosed method has considered relation between current power and power to be lowered, and the said influence.

Description

technical field [0001] The invention relates to downlink power control in a communication system, in particular to downlink power control based on carrier-to-interference ratio in the field of general packet radio service and extended general packet radio service (EGPRS). Background technique [0002] Power control is to increase the strength of the signal by increasing the transmission power of the base station or mobile phone when the signal is weakened but still supportable; or conversely, when the signal is too strong, reduce the transmission power to reduce interference. [0003] In systems such as GPRS (General Packet Radio Service, General Packet Radio Service), for a mobile station (MS, Mobile Station), the most important significance of power control is to optimize spectrum efficiency and save power. Power control is more complex in packet connections than in circuit connections since there is no continuous two-way connection. [0004] figure 1 Devices involving p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/005
CPCY02D30/70
Inventor 王继宏唐雪瞿小成朱清华
Owner ZTE CORP