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CDMA communication system

A communication system and unified technology, applied in the field of mobile communication, can solve the problem of insufficient power control speed and accuracy

Inactive Publication Date: 2010-06-09
谢强
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the disadvantages of insufficient fast and accurate power control in the prior art, so as to propose a method that can quickly and accurately control the power of the traffic channel CDMA cellular channel without increasing the hardware cost

Method used

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Embodiment Construction

[0009] First, forward user data is received by multiple users, while forward power control determines the forward frame error rate of multiple users rather than a single user. There is a check code at the end of the frame. Secondly, multiple Each user independently decides the forward power control command to be sent to the base station according to their respective received signals. In this way, the transmit power of the forward supplementary channel of the same sector group is the result of the superposition of forward supplementary channel transmit power of multiple users. When the transmit power is not much different, the superimposed forward transmit power may cause the total forward power to increase (decrease) significantly; finally, in most cases, the forward transmit power of each sector is affected by the power of the group. The user receiving the weakest forward signal controls, while the forward transmit power of other users in the group tends to the lower limit val...

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Abstract

The invention provides a CDMA communication system which relates to the field of mobile communication. Aiming at the defect that the power control is not quick and accurate enough, the invention provides a method capable of quickly and accurately controlling the power of a CDMA cellular channel in traffic channels under the condition that the hardware cost is not increased. The technical scheme of the invention comprises the steps of: firstly, setting a centralized control point; if the power control commands of all users in the same sector group are 1, indicating the on-state power of a forward channel, and if the power control commands are 0, indicating the off-state power of the forward channel for centralized processing; and additionally setting a centralized control point for centralized distribution of the forward power in the same sector group, thereby carrying out centralized processing of the power control commands.

Description

technical field [0001] The invention relates to the field of mobile communication. Background technique [0002] At present, in the field of mobile communication, users are no longer satisfied with the current situation of point-and-point calls, 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 mobile communication system. The proliferation of business needs, which require the current cellular mobile communication system to have the function of group message, has become more and more realistic needs, in view of this, the cellular trunking communication system came into being, the system combines the cellular communication system with dedicated dispatching communication The combination of the systems not only expands the business scope of the cellular communication system, but also enables the digital trunking system to get rid of the functional and ...

Claims

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Application Information

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IPC IPC(8): H04B7/005
Inventor 谢强
Owner 谢强
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