Method and device for controlling transmitting power

A transmission power control and transmission power technology, applied in the field of communication, can solve problems such as E-DPDCH and E-DPCCH being out of sync and affecting E-DPDCH demodulation performance

Active Publication Date: 2012-10-24
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the transmit power is controlled according to the gain factor configured by the control channel, but the inventor found the following defects in the prior art during the research of the present invention: the total transmit power of the UE in the WCDMA system exceeds the maximum allowable threshold , if E-DCH includin

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  • Method and device for controlling transmitting power
  • Method and device for controlling transmitting power

Examples

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Example Embodiment

[0029] Example one

[0030] figure 1 This is a flowchart of a transmission power control method provided in Embodiment 1 of the present invention. The method specifically includes performing a power control process when it is determined that the total transmission power exceeds the maximum threshold of the transmission power. The power control subject may be a user side device or a network side device. In this embodiment, the power control subject is preferably a user equipment UE. When the power control subject executes a certain strategy to increase the total transmission power, it may cause the total transmission power to exceed the maximum threshold of the transmission power and the power control process needs to be performed. The power control process includes at least the following steps:

[0031] Step 110: When the total transmit power exceeds the maximum transmit power threshold, reduce the gain factor of the data channel;

[0032] Step 120: After the power ratio of the dat...

Example Embodiment

[0033] Example two

[0034] figure 2 This is a flowchart of the transmission power control method provided in the second embodiment of the present invention. The transmission power control method at least includes the following steps:

[0035] Step 210: When the total transmit power exceeds the maximum transmit power threshold, reduce the gain factor of the data channel;

[0036] Step 220: After the power ratio of the data channel to the first control channel is less than the power ratio threshold, if at least one of the data channels is in the discontinuous transmission DTX state, place all the data channels in the DTX state , And put the second control channel in DTX state.

[0037] In the first and second embodiments, the threshold value of the power ratio is the ratio configured at the higher layer and the gain factor of the reduced data channel, whichever is the minimum of the power ratio between the data channel and the first control channel, or the power ratio The threshold v...

Example Embodiment

[0042] Example three

[0043] The transmission power control method provided in the third embodiment of the present invention is applicable to a WCDMA system, and specifically is applied to the UE in the uplink of the WCHMA system to perform transmission power control as an example.

[0044] If the total transmit power of the UE in the WCDMA system exceeds the maximum transmit power threshold, when the E-DCH including E-DPDCH and E-DPCCH is configured, the UE first reduces the E-DCH in order to reduce the total transmit power. The gain factor of the DPDCH, as the gain factor of the E-DPDCH decreases, some or all of the E-DPDCH may be in the DTX state. DTX is discontinuous transmission. For example, in a communication process, the user has only a little time for talking. In order to save system resources and reduce interference in the system, no messages are sent during the gap period, but comfortable noise is sent. Because in the prior art, no matter what state the E-DPDCH is in, ...

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Abstract

The invention discloses a method and a device for controlling a transmitting power. The method comprises the following steps of reducing a gain factor of a data channel when a total transmitting power exceeds a maximum threshold value of the transmitting power; and after a power ratio of the data channel and a first control channel is less than the threshold value of the power ratio, and if the data channels are in a discrete transmission (DTX) state, setting a second control channel into the DTX state. According to the method and the device for controlling the transmitting power provided by the invention, the problem of data channel demodulation performance reduction caused by introducing noises when a receiving terminal demodulates the data of the data channel as the data channel and the control channel are asynchronous can be solved, and demodulation performance of the data channel during a power control process is improved.

Description

technical field [0001] Embodiments of the present invention relate to communication technologies, and in particular, to a method and device for controlling transmission power. Background technique [0002] With the rapid development of communication technology, Wideband Code Division Multiple Access (WCDMA for short), as one of the mainstream technologies of the third generation mobile communication system, has been extensively researched and applied worldwide. [0003] At present, WCDMA already has multiple versions such as the 99th version (Release99, R99), the 4th version (Release4, R4)-the 10th version (Release10, R10). In order to increase the data transmission rate and meet different needs, WCDMA introduced the High Speed ​​Downlink Packet Access (HSDPA) technology in the fifth release (Release5, R5), and introduced the High Speed ​​Downlink Packet Access (HSDPA) technology in the sixth release (Release6, R6) Among them, the uplink is optimized and evolved for the pac...

Claims

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Application Information

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IPC IPC(8): H04W52/04
CPCY02B60/50
Inventor 邵家枫赵悦莹
Owner HUAWEI TECH CO LTD
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