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Method for adjusting physically-controlled channel transmitting power

A transmission power and control channel technology, applied in the direction of transmission control/equalization, advanced technology, sustainable buildings, etc., can solve the problems of adjusting transmission power, increasing UE power loss, uplink interference, etc., and achieve the effect of reducing power loss

Inactive Publication Date: 2007-06-20
HUAWEI TECH CO LTD
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0007] Since the spreading factor of E-DPCCH is fixed, the reliability of its channel mainly depends on the transmission power of E-DPCCH. Normally, using higher transmission power can improve the reliability of channel transmission, but if it exceeds E-DPCCH -DPCCH is actually needed, but using too high power will waste UE transmission capability, increase UE power loss, and cause uplink interference, affecting reliable transmission of other channels and overall system throughput. A method to reasonably adjust the transmission power according to the actual transmission situation of the channel

Method used

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  • Method for adjusting physically-controlled channel transmitting power

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Embodiment Construction

[0027] In the present invention, the radio network controller (RNC) on the wireless network side uses air interface signaling to bias the transmission power of the E-DPDCH channel, and sets the reliability index and judgment threshold offset value of the channel. The feedback information on the network side evaluates the reliability of channel transmission, and dynamically adjusts the transmission power according to the evaluation results, so as to ensure the reliable transmission of the channel, and the terminal clock uses the appropriate transmission power to send data.

[0028] As shown in Figure 1, Figure 1 is a flow chart of a method for adjusting the transmit power of a dedicated physical control channel in an embodiment of the present invention, specifically performing the following steps:

[0029] Step 101, when the E-DPDCH channel is established, the RNC on the network side sets the initial transmission power value and the initial offset value P_off of the channel E_d...

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Abstract

The invention is concerned with the method to adjust definite purpose physics control channel emissive power, includes: the wireless network side off-sets the initial emissive power of the definite purpose physics control channel; the terminal confirms the transmission reliability of the definite purpose physics control channel in a fixed time gap, changes the emissive power off-set value when the channel is fallibility. The invention can dynamic state adjust the emissive power according to the feedback information during the working process by setting the reliability index of the definite purpose physics control channel and judging threshold off-set value, in order to avoid the terminal to use oversized emissive power at the condition of ensuring the channel reliable transmission, reduce the power loss of the terminal and the up interference of the channel.

Description

technical field [0001] The invention relates to a method for adjusting transmission power, in particular to a method for adjusting transmission power of dedicated physical control channel in WCDMA system. Background technique [0002] High Speed ​​Uplink Packet Access (HSUPA) is an important new feature in the third generation wireless communication (3G) Wideband Code Division Multiple Access (WCDMA) standard. Compared with the original R99 features, HSUPA introduces the following new technologies: [0003] (1) Uplink data inner loop confirmation mechanism between user equipment (UE) and WCDMA system base station NodeB: UE sends uplink enhanced dedicated channel (E-DCH) data, NodeB confirms the received data block, and generates ACK / NACK Response information, and directly feed back the response information to the UE through the downlink E-DCH Hybrid Automatic Repeat Acknowledgment Indicator Channel (E-HICH), changing the original confirmation by the Radio Network Controller ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/005
CPCY02B60/50Y02D30/70
Inventor 李强
Owner HUAWEI TECH CO LTD
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