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Method for implementing immediate minimization of drive test by adaptively varying measurement period

A technology of measurement period and implementation method, applied in electrical components, wireless communication, etc., can solve problems such as long acquisition time, affecting system Qos performance, increasing network load, etc., and achieves the effect of optimizing the number of UEs

Active Publication Date: 2011-04-27
COMBA TELECOM SYST CHINA LTD
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Problems solved by technology

Secondly, from the perspective of the system, the base station can only reflect the real performance of the system more comprehensively and accurately by selecting a large number of UEs for measurement. However, a large number of UEs participating in the measurement will increase the load of the network and affect the QoS performance of the system that is transmitting services. , so it can be considered that the base station only selects a large number of UEs to perform measurement operations in a short period of time, and then no longer performs measurement
Finally, in order to maintain good performance of the system, the measurement operation of the base station is preferably carried out periodically, and, if the system performance is good, the longer the time to stop the measurement operation

Method used

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  • Method for implementing immediate minimization of drive test by adaptively varying measurement period
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  • Method for implementing immediate minimization of drive test by adaptively varying measurement period

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[0053] see Figure 4 , introduce the situation that the system performance is very good: in the measurement activation phase, the occurrence probability of RLF in the first measurement time unit satisfies P(RLF)l , and the measured sleep time grows exponentially. As shown in the figure: in the measurement activation phase of the first measurement period (N=1), after the measurement time unit with a duration of T ends, because P(RLF)l , so by default, the system performance remains good within the subsequent duration T, that is, the measurement sleep duration is also T. After the measurement dormancy period ends, enter the second measurement period (N=2), because P(RLF)l , so it is defaulted that the system performance remains good within the subsequent 3T (because the system has maintained good performance for 3T since the first measurement cycle), that is, the measurement sleep time is 3T. By analogy, at the same time, it is found that measuring the sleep duration can be summ...

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Abstract

The invention discloses a method for implementing immediate minimization of drive test (MDT) by adaptively varying a measurement period. The method comprises the following steps that: a base station circularly executes measurement operation of the measurement period consisting of measurement activation and measurement sleep; and the base station adjusts time lengths of the measurement activation stage and the measurement sleep stage in each measurement period respectively according to probability of radio link failure (RLF) of a user terminal, namely user equipment (UE), at the measurement activation stage, namely the base station adaptively varies the time of the measurement period. Viewed from the system, an interval measurement concept and an algorithm thereof are provided by reasonably setting the time of the measurement activation stage and the measurement sleep stage, so that the base station only executes the measurement operation in a shorter time when necessary; therefore, the high efficiency of the method is shown, the number of UE which participates in the measurement operation is optimized, the measurement result can also more accurately reflect the actual performance of the system, and the system can work in a good working state for a long time.

Description

technical field [0001] The present invention relates to an instantaneous minimization drive test (Immediate MDT) method, to be precise, relates to a long-term evolution LTE system for cellular mobile communication, the base station selects the mobile terminal UE to participate in the measurement and adaptively changes the instantaneous measurement period The invention provides a method for realizing the minimization of the drive test, so as to ensure that the performance of the base station and the system can realize the self-optimization of the performance parameters; it belongs to the technical field of mobile communication. Background technique [0002] Drive Test is to obtain the wireless coverage and network operation conditions under the existing conditions through the method of field measurement, so as to adjust various related parameters as the basis for system optimization. However, the drive test consumes a lot of manpower and material resources. Moreover, it has l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/04H04W24/08
Inventor 彭木根陈华王文博
Owner COMBA TELECOM SYST CHINA LTD
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