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Forward power control method of CDMA cellular trunked system

A forward power, trunking system technology, applied in the field of mobile communication, can solve the problem that the forward supplementary channel power control is not fast and accurate enough, and achieve the effect of improving the control speed and accuracy and reducing the forward frame error rate.

Active Publication Date: 2008-03-12
GLOBAL INNOVATION AGGREGATORS LLC
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Problems solved by technology

[0006] The purpose of the present invention is to overcome the shortcoming that the power control of the forward supplementary channel of the CDMA cellular trunking system that shares the forward traffic channel in the prior art is not fast enough and accurate enough, so as to propose a method that can be used without increasing the cost of hardware. A method for quickly and accurately controlling the power of the forward supplementary channel of the shared forward traffic channel CDMA cellular trunking system

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  • Forward power control method of CDMA cellular trunked system
  • Forward power control method of CDMA cellular trunked system
  • Forward power control method of CDMA cellular trunked system

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Embodiment Construction

[0028] Unless otherwise specified, the forward transmit power described below refers to the forward traffic channel transmit power of users of the same group in the same sector.

[0029] Below in conjunction with accompanying drawing, the implementation of technical scheme is described in further detail:

[0030] Figure 1 shows the forward supplementary channel power control process of a common CDMA system. First, the base station establishes a forward supplementary channel and initializes the transmit power of the forward traffic channel; then the mobile station calculates the frame error rate every 20 milliseconds to obtain a new signal-to-noise ratio threshold, and at the same time obtains the signal-to-noise ratio of the received signal every 1.25 milliseconds. The signal-to-noise ratio threshold is compared to obtain a power control command for controlling the forward supplementary channel power of the base station to increase or decrease. Finally, the base station extra...

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Abstract

The invention discloses a method of controlling forward power of CDMA cellular cluster system in mobile communication field, firstly setting two centralized control points, one unitedly processing power control commands and the other one unitedly allocating the forward power; during the course of unitedly processing power control commands, firstly collecting power control commands, selecting proper power control commands, and then identifying corresponding forward compensatory channels. In the program of unitedly allocating power resources, firstly collecting the previous total emission power of forward compensatory channels in sector cluster; allocating the collected total emission power to the identified forward compensatory channels; setting the power of the unidentified ones in the cluster at the lowest value appointed by the system; the forward compensatory channels in the cluster obtain the latest emission power. As compared with existing technique, it can improve the control rate and accuracy of forward compensatory channels in the sector cluster, thus effectively reducing the forward frame error rate and hang-up rate of the system.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to a power control method in a code division multiple access cellular cluster system. Background technique [0002] With the continuous development of economic life and people's increasing demand for communication and communication, communication systems have increasingly become an indispensable tool for activities in various fields of society. Demand drives innovation, and communication technology is also developing rapidly driven by increasing demand. In the field of mobile communication, users are no longer satisfied with the current status of point-to-point calls. They not only require the communication system to have the characteristics of high voice quality, multi-function, and high reliability, but also put forward many requirements for the proliferation of mobile communication systems. Among them, it is required that the current cellular mobile communication system has t...

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Application Information

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IPC IPC(8): H04J13/02H04Q7/20H04B7/005H04W52/30H04W84/08
Inventor 屈炳云刘学敏
Owner GLOBAL INNOVATION AGGREGATORS LLC
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