Soft handover downlink power control system and its method

A technology of power control and transmit power control, which is applied in the direction of transmission control/equalization, advanced technology, and climate sustainability, and can solve problems such as increased uplink reception SIR fluctuations, UE transmit power waste, and unbalanced received signals , to achieve the effect of increasing the uplink switching gain, facilitating upgrade and implementation, and increasing capacity

A technology of power control and transmit power control, which is applied in the direction of transmission control/equalization, advanced technology, and climate sustainability, and can solve problems such as increased uplink reception SIR fluctuations, UE transmit power waste, and unbalanced received signals , to achieve the effect of increasing the uplink switching gain, facilitating upgrade and implementation, and increasing capacity

CN1885732AInactive Publication Date: 2006-12-27SHANGHAI HUAWEI TECH CO LTD
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  • Soft handover downlink power control system and its method
  • Soft handover downlink power control system and its method
  • Soft handover downlink power control system and its method

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Embodiment Construction

[0066] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0067] The Node B on the network side of the solution of the present invention determines the output of the downlink power according to whether the uplink signal has a strong path when receiving the UE uplink signal, and uses the DPB algorithm to equalize the downlink transmission power. When the uplink signal has no strong path, stop the downlink inner loop power control; otherwise, perform power control according to the TPC command carried by the received uplink signal. With the scheme of the present invention, when the uplink signal has no strong path, that is, when the uplink coupling loss is very large, the downlink inner loop power control is stopped, so that even when the coupling loss between links is unbalanced, the downlink transmit power can be pulled ba...

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Abstract

The related control system to soft switch down power can make a compromise for up and down link to avoid linkage couple and receiving SIR fluctuation, wherein for weak up signal, it stops down inner power control as up TPC, and changes into down inner power control as DPB algorithm. This invention also set the down minimal emission power as mean value minus an offset.

Description

technical field [0001] The invention relates to the power control technology in mobile communication, in particular to the power control technology in the mobile communication system based on code division multiple access. Background technique [0002] CDMA is a mobile communication technology developed on the basis of spread spectrum communication technology. It uses spread spectrum codes to distinguish different users, and transmits data through wireless links after spread spectrum. CDMA technology has the characteristics of high confidentiality, strong anti-interference, high spectrum utilization, simple network planning, large system capacity and flexibility, and has become the mainstream technology for the future development of mobile communications. Currently, several third-generation mobile communications (TheThird Generation, referred to as "3G") technical standards, including code division multiple access 2000 (Code Division Multiple Access 2000, referred to as "CDM...

Claims

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Application Information

Patent Timeline
27 Dec 2006
Publication
CN1885732A
IPC
H04B7/005
CPC
Y02D30/70
Inventors
王成毅; 施锐