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Initial power control method, system and device

A technology of initial power and control method, applied in power management, transmission control/equalization, electrical components, etc., can solve the problems of power control lag, affect service quality, increase system interference, etc., to achieve the effect of power control

Inactive Publication Date: 2008-04-09
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] It can be seen that in the prior art, a certain number of measurement reports need to be collected when power control is performed and several initial measurement reports will be discarded, so the power control is very lagging, and power control cannot be performed in the initial stage of call access and cell handover , the base station can only transmit at the maximum power, which will inevitably increase the interference of the system, affect the quality of the service, and waste the power consumption of the base station

Method used

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  • Initial power control method, system and device
  • Initial power control method, system and device
  • Initial power control method, system and device

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Embodiment 1

[0025] In this embodiment, the case of cell handover is taken as an example. Considering that before the cell handover, the MS is in a steady state in the source cell, the signal strength information of the broadcast control channel (BCCH) of the target cell received by the MS is relatively accurate, so this In the embodiment, the path loss between the MS and the base station where the target cell is located is calculated by using the signal strength of the BCCH of the target cell received by the MS received by the base station controller BSC of the source cell. FIG. 1 shows an exemplary flowchart of an initial power control method in Embodiment 1 of the present invention. As shown in FIG. 1 , the process includes the following steps:

[0026] 101. Receive the signal strength (Rxlev_BCCH) of the broadcast control channel (BCCH) of the target cell received by the MS and reported by the MS.

[0027] Before the handover, the MS will report the received signal strength of the BCCH...

Embodiment 2

[0049] In this embodiment, the case of MS call access is taken as an example. Considering that the uplink path loss and the downlink path loss are the same, in this embodiment, the uplink path loss is used instead of the downlink path loss. Fig. 4 shows an exemplary flow chart of the power control method when the MS initially accesses in Embodiment 2 of the present invention. As shown in Fig. 4, the flow may include the following steps:

[0050] 401. Acquire actual transmit power of the MS.

[0051] In this step, the actual transmit power of the MS can be calculated according to the specification in 3GPP TS 05.05. For example, when a call is received, the MS will send a Classmark Update (Classmark Update) message to the BSC to notify the BSC of its own relevant information, and the BSC can calculate the MS class according to the power category and other information in the Classmark Update message reported by the MS. the actual transmit power.

[0052] 402. Receive the uplink...

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Abstract

The inventive embodiment discloses an initial power control method, which includes that: calculate the path loss between a mobile platform and a base station; according to the path loss and the transmission power intensity of the distributed carrier frequency where the calling is, predict the intensity of the downlink signal received by the mobile platform; according to the intensity of the downlink signal received by the mobile platform, determine the power intensity of power transmission, and inform the base station of transmitting power according to the power intensity. Besides, the inventive embodiment also discloses an initial power control system and device. The technical proposal disclosed in the invention realizes the power control of the initial segment by indirectly obtaining the relatively accurate information of the downlink signal intensity received by the mobile platform, and reduces the interference to the system and saves the power consumption of the base station.

Description

technical field [0001] The present invention relates to mobile communication technology, in particular to an initial power control method, system and device. Background technique [0002] In mobile communication technology, in order to maintain high-quality communication without causing interference to other users, it is usually necessary to control the transmit power of the base station. At present, in the power control of the Global System for Mobile Communications (GSM), the Base Station Controller (BSC) needs to perform measurement reports on the received measurement reports after receiving the measurement reports of a certain number of calling channels reported by the Mobile Station (MS). Interpolation, filtering and other processing to process lost measurement reports and eliminate outliers (burrs), and obtain the processed downlink signal strength value received by the MS, and then compare the obtained downlink signal strength value received by the MS with the ideal M...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/005
CPCH04W52/50H04W52/242Y02B60/50H04W52/247H04W52/143
Inventor 张立文李臻
Owner HUAWEI TECH CO LTD
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