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Method for adjusting dynamic channel in time-division multiplex CDMA access system

A code division multiple access and dynamic channel technology, applied in the field of channel dynamic allocation and adjustment, can solve problems such as service interruption, unused resources, and increased bit error rate

Inactive Publication Date: 2008-04-16
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, due to the characteristics of CDMA, users will either degrade the service quality of existing services, increase the bit error rate, or even interrupt services in severe cases.
But TS5 still has a lot of unused resources

Method used

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  • Method for adjusting dynamic channel in time-division multiplex CDMA access system
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  • Method for adjusting dynamic channel in time-division multiplex CDMA access system

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Embodiment Construction

[0054] Before carrying out the description of the method of the present invention, the required parameters and concepts are explained as follows:

[0055] The implementation of the method of the present invention needs to be closely dependent on the measurement of the physical layer, so firstly, several descriptions of the measurement quantities to be used and several predefined values ​​are introduced. Since the uplink and downlink measurements are different, they will be described separately below.

[0056] In the uplink direction, the "ReceivedTotal Wind Band Power" RTWP measured at the base station is mainly used to reflect the load of the uplink system. In addition, due to the need to distinguish the imbalance between time slots and the severity of the time slot load, two thresholds need to be set: RTWP H_threshold , the high value threshold of the received total broadband power, when the RTWP of the time slot to be tested exceeds this threshold, it means that the load i...

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Abstract

The invention relates to a dynamic channel adjustment method in TDM-SCDMA access system. Wherein, periodic measuring and updating the up-down load measurement value, comparing the measured value with predetermined high-low threshold value to decide whether exists trigger channel adjustment situation; according to unbalance of time slot and load severity, dynamic adjusting the most adjustable user channel in up / down time slot over threshold value to another time slot with lower threshold. This method can decreases unbalance and increases service quality.

Description

technical field [0001] The invention relates to a channel adjustment method in an access system in the mobile communication field, in particular to a method for channel dynamic allocation adjustment in a time division multiplexing code division multiple access system in the third generation mobile communication. Background technique [0002] In the third-generation mobile communication system of time division multiplexing and code division multiple access, physical channels are identified by combinations of carrier frequency / time slot / spreading code. The following takes the TD-SCDMA time division synchronous code division multiple access system as an example to illustrate. In TD-SCDMA, every 10ms on each specified carrier frequency is a frame, each frame is divided into two subframes, the structure of the two subframes is the same, and each subframe is divided into 7 regular time slots and 3 special time slots, the user's business data are carried on the regular time slots,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04Q7/36H04Q7/38H04W24/08H04W72/12
Inventor 张建李廉
Owner ZTE CORP