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Base station down transmitting power controlling method

A transmission power control and transmission power technology, applied in the field of network communication, can solve the problems of downlink congestion, UE downlink asynchronous, poor network stability, etc.

Inactive Publication Date: 2008-07-30
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
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  • Claims
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Problems solved by technology

[0006] When the uplink wireless link on the NODEB side is in an out-of-sync state, the uplink wireless link may think that it has found multipath due to the generation of virtual paths. In order to reduce power, it may also be for power maintenance, there is a certain randomness, so that the downlink transmission power of the base station has a strong uncertainty
[0007] When the downlink TPC demodulated according to the virtual path is all increased power, it may cause downlink congestion, thereby affecting the capacity of the cell; when the downlink TPC demodulated according to the virtual path is all reduced power, it may cause the UE downlink to be out of sync , thus causing call drop and making the network less stable

Method used

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  • Base station down transmitting power controlling method

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Embodiment Construction

[0019] When the uplink wireless link on the base station side is out of synchronization, if the downlink transmit power of the base station is not controlled according to the downlink transmit power demodulated by the dedicated physical control channel of the virtual path, but the slowly rising transmit power is used to control the downlink transmit power of the base station Controlling the downlink transmission power of the base station can avoid abnormal power control of the downlink transmission power of the base station, thereby avoiding downlink congestion and call drop of the user equipment.

[0020] Therefore, the core of the present invention is to control the downlink transmission power of the base station according to the predetermined alternating sequence of N power ups and M power downs within a predetermined time interval.

[0021] The technical solution provided by the present invention will be further described below based on the core idea of ​​the present invent...

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Abstract

This invention provides a kind of controlling method for the base station downward emission power. Its kernel is: during the scheduled time period, the downward emission power of base station is controlled according to the predetermined alternating sequence of N ascending power and M descending power. When the upward wireless link of base station side is out of synchronism, this invention can avoid base station downward emission power abnormality and make the base station downward emission power keep steady. It can also avoid interference.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a method for controlling downlink transmission power of a base station. Background technique [0002] In WCDMA (Wideband Code Division Multiple Access) system, the design of TPC (Transmit Power Control) is very important. [0003] On the NODEB (base station) side, for an uplink wireless link, from its establishment to deletion, it can be divided into three states, namely initial state (initial state), In-sync state (synchronous state) and Out-of-sync state (out of sync state). [0004] When the uplink wireless link on the NODEB side is in the Initial state, the NodeB's transmit power control strategy is: the downlink TPC is maintained, that is, the transmit power of the downlink is required to remain unchanged, and the uplink TPC is TPCPATTERN (transmit power control sequence), that is, it is required The UE (User Equipment) slowly increases the transmit power to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/005
Inventor 周意成
Owner HUAWEI TECH CO LTD
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