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Power control method

A technology of power control and power, applied in power management, transmission control/equalization, code division multiplexing system, etc., can solve the problem that it is difficult to guarantee the service communication quality of WCDMA Release 6 system, affect the system capacity, and cannot reasonably control WCDMA Release 6 system Issues such as uplink transmit power

Active Publication Date: 2007-03-28
HUAWEI TECH CO LTD
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Problems solved by technology

The WCDMA Release6 version adopts the uplink enhancement technology on the uplink, but there is no power control scheme for this uplink in the prior art, so the prior art cannot reasonably control the uplink of the WCDMA Release6 system Transmitting power, it is difficult to guarantee the communication quality of services in the WCDMA Release6 system, which further affects the improvement of system capacity

Method used

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Embodiment Construction

[0066] The power control method provided by the invention realizes the power control of the WCDMA uplink using the uplink enhancement technology by performing power control on the DPDCH and E-DPDCH in the uplink dedicated physical channel. Moreover, the present invention organically combines the power control on DPDCH and E-DPDCH, thereby reasonably controlling the generation power of the uplink, ensuring the communication quality of services in the system, and improving the capacity of the system.

[0067] The power control on the DPDCH of the present invention will be described below with reference to the drawings and specific embodiments. For the power control on the DPDCH, the present invention is based on the actual block error rate BLER of the service on the DPDCH DPDCH And the target value of block error rate BLER preset by the system DPDCH，t arg et , periodically update the target value SIR of the signal-to-interference ratio (SIR, Signal to Interference Ratio) of the...

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Abstract

This method realizes power control on the up-going link of WCDMA system of using up-going boosting technique. It collects statistic of the error block ratio (EBT) on DPDCH. According to the aim value of EBT preset by the system, it calculates the signal interference ratio of renewed DPCCH, then according to the calculation result, regulates and controls the emitting power on DPCCH. The method collects statistic of real error block ratio and the number of re-transfer of MAC-d flow on E-DPDCH, calculates the power shift parameter of each MAC-d flow, then according to the calculation result, regulates the emitting power on each MAC-d flow. This power control method is applied on up-going link of WCDMA system of using up-going boosting technique. The invention regulates the emitting power of DPDCH and E-DPDCH periodically to ensure service quality and reduces interference inside the system.

Description

technical field [0001] The invention relates to a power control technology in a wideband code division multiple access system, in particular to an uplink power control method using uplink enhancement technology in the wideband code division multiple access system. Background technique [0002] Wideband Code Division Multiple Access (WCDMA, Wideband Code Division Multiple Access) is one of the three mainstream third-generation mobile communication standards in the world, and its own system is constantly being improved. In the Release5 version, WCDMA introduces a high-speed downlink packet access technology (HSDPA, High Speed ​​Downlink Packet Access), thereby greatly improving the throughput of the downlink. Correspondingly, High Speed ​​Uplink Packet Access (HSUPA, High Speed ​​Uplink PacketAccess) has been introduced into Release 6 of WCDMA, and the establishment of the HSUPA standard has been basically completed. The core objective of the HSUPA technology is to improve th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/005H04J13/00H04W52/14H04W52/20H04W52/24H04W52/48
Inventor 伏玉笋吴玉忠
Owner HUAWEI TECH CO LTD
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