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Closed-loop power control method for code division multiple access system

A closed-loop power control and code division multiple access technology, applied in the field of wireless communication, can solve problems such as closed-loop power control of uplink traffic channels, and achieve the effect of saving signaling overhead

Inactive Publication Date: 2008-02-27
ZTE CORP
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Problems solved by technology

[0008] In view of this, the technical problem to be solved by the present invention is to provide a closed-loop power control method of a code division multiple access system, to solve the problem that there is no dedicated closed-loop power control command in the HSUPA characteristic of the code division multiple access system In the case of , the closed-loop power control problem of the uplink traffic channel

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  • Closed-loop power control method for code division multiple access system

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Embodiment Construction

[0028] The core idea and various preferred embodiments of the present invention will be further described and illustrated in detail below with reference to the accompanying drawings.

[0029] The invention provides a closed-loop power control method of a code division multiple access system, the core idea of ​​which is:

[0030] In the HSUPA feature, due to Node B resource scheduling, the time unit for UE to transmit data uplink and Node B to feed back retransmission instruction information is the same and relatively short. Therefore, ACIK / NACK can also reflect the quality of the wireless channel in a time unit.

[0031] Aiming at the above characteristics, a method for adjusting the transmit power of the uplink traffic channel by the user equipment based on the comparison result of the number of continuously received acknowledgment or non-acknowledgement retransmission indication information with the parameter value configured by the network side high-layer signaling is propo...

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Abstract

This invention discloses a method for controlling closed loop power of a CDMA system including the following steps: 1, a user device receives a parameter value collocated for higher level signaling of the network side and adjusts step-length value of the emission power, 2, the user device adjusts the transmission power of the up service channel based on the comparing result of times of continuously received confirmed or non re-transmitted instruction information with the assigned parameter value of the higher level signaling of the network side.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a closed-loop power control method in a code division multiple access wireless communication system. Background technique [0002] In a code division multiple access wireless communication system, a very critical issue is to consider the maximization of system capacity, that is, the maximization of users or traffic that can be processed simultaneously. Therefore, in the code division multiple access wireless communication system, considering the factors of transmission power and interference, it is very important for the system capacity to achieve the required service quality with the lowest possible transmission power. [0003] In the uplink direction from the terminal to the network side, that is, in the reverse direction, if the transmitted signals of each terminal can be controlled to have the same signal level at the wireless transceiver device on the network ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/005H04J13/00H04W52/08
Inventor 张银成陈慧马志锋
Owner ZTE CORP
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