CN102014423A - Smooth filtering method for measure data reported from physical layer - Google Patents

Abstract

The invention provides a smooth filtering method for the measure data reported from a physical layer. The method includes following steps: obtaining the physics layer supported measure report cycle T; calculating the multiple l which represents the ratio of the said physics layer supported measure report cycle T to the network requirement measure period T0, herein, l satisfies the formula: T=lT0, l=1, 2, 3, ...; obtaining a first filter factor alpha according to the air interface message sent from the network, calculating a second filter factor beta = 1- (1- alpha) l+1; after a first measure data of the said physical layer is reported, configuring the filtered measure result F0=M0; filtering the subsequent physical layer reported measure data according to the formula: Fn=(1-beta)Fn-1+betaMn, wherein Mn is the physical layer reported measure data, then obtaining the filtered measure data of Fn and Fn-1, herein, n=1,2,3, ..... According to the filtering factor of the measure cycle adjusting layer 3, the technical scheme proposed by the invention the UE can satisfy the physical layer report measure data smooth filtering effect required by the network when the multiple of the measure cycle to the network required measure cycle is integer.

Description

A kind of physical layer reporting measurement data smoothing filter method

Technical field

The invention belongs to the 3G (Third Generation) Moblie technical field, relate in particular to a kind of physical layer reporting measurement data smoothing filter method.

Background technology

In 3G (Third Generation) Moblie, physical layer needs periodic reporting measurement data, some measurement data wherein, and as received signal code power, slot interfering signal of time sign indicating number power, transmitting power or the like need be carried out layer 3 and filter, be i.e. radio resource control layer filtration.The formula that this layer 3 filters is:

F _n＝(1-α)F _n-1+αM _n (1)

M wherein _nThe measurement data that reports for physical layer; F _nAnd F _N-1Result for after the filtration of measurement data has F ₀=M ₀α is a filterable agent.

Filterable agent α has embodied the effect of level and smooth filtration, and in general with the cycle of filtering, promptly physical layer measurement data report cycle has relation.When the report cycle of actual measurement during,, may not reach the effect of the level and smooth filtration in the expectation if continue to use original filterable agent greater than the measurement data report cycle that requires.

3G (Third Generation) Moblie collaborative project tissue (3 ^RdGeneration Partnership Project, 3GPP) TS 25.123 and TS 25.133 standards physical layer measure the limiting value of report cycle.In general, commercial UE can both satisfy the requirement of TS 25.123 and TS 25.133, does not prolong the report cycle of measurement data for fear of frequently reporting but also do not get rid of.Report such as the transmitting power measurement result, according to TS 25.123 and TS25.133, the transmitting power report cycle is 10ms (FDD) or each time slot, will certainly increase the signaling consumption and the computing cost of 3 on physical layer and layer so greatly, suitably increase report cycle (reduction reports frequency) at this moment and just seem that comparison is reasonable and effective.But how 3GPP does not adjust filterable agent after having standard to enlarge report cycle.

Summary of the invention

The purpose of this invention is to provide a kind of physical layer reporting measurement data smoothing filter method, solve after physical layer is measured the variation of report cycle, the problem of layer 3 (radio resource control layer) data filter poor effect.

Technical scheme of the present invention is that a kind of physical layer reporting measurement data smoothing filter method is characterized in that, may further comprise the steps:

Obtain the physical layer support and measure report cycle T;

Calculate described physical layer support and measure report cycle T for the network requirement measurement period T ₀Multiple l, here, l satisfies formula: T=lT ₀, l=1,2,3 ...;

The idle message that sends from network obtains the first filterable agent α, this first filterable agent α according to described physical layer with the network requirement measurement period T ₀Level and smooth filtration during reported data requires to obtain, and meets formula: F ' _n=(1-α) F ' _N-1+ α M _n, M wherein _nBe described physical layer reporting measurement data, F ' _nAnd F ' _N-1Measurement data after be filtering, n=1 here, 2,3 ...;

Calculate second filterable agent β=1-(1-α) ^L+1

After first measurement data of described physical layer reports, the measurement result F that order is filtered ₀=M ₀

According to formula: F _n=(1-β) F _N-1+ β M _nTo the follow-up physical layer reporting measurement data filter that reports, wherein M _nFor described physical layer reporting measurement data, obtain F _nAnd F _N-1Measurement data after be filtering, n=1 here, 2,3 ....

The principle of method provided by the invention is based on the following card process that pushes away.

It is T that hypothetical network requires the time cycle of physical layer reporting measurement data ₀, filterable agent is α; The actual time cycle that reports of physical layer is T=lT ₀, l=1,2,3 ...; F _nAnd F _N-1Be the result after the filtration of measurement data, the measurement data that physical layer reports constantly at nT is M _n

In order to extrapolate F _nWith F _N-1About the relation of filterable agent α, need to do a reasonably hypothesis.

Suppose: physical layer is at the moment [(n-1) l+1] T ₀To nlT ₀The reported result of (being in the T time) all is M constantly _n

So from (n-1) lT ₀To nlT ₀L+1 the measurement data after filtering form an array { E _k, satisfy:

E _k＝(1-a)·E _k-1+a·M _n (2)

And E ₀=F _N-1E _l=F _nCan obtain by (2):

$E_k=(1-a)\·E_{k-1}+a\·M_n\⇒(E_k-M_n)=(1-\mathrm{\α})(E_{k-1}-M_n)$

Definition Q _k=E _k-M _n, obvious { Q _kBe the Geometric Sequence of a ratio for (1-a), have so:

$Q_l={(1-\mathrm{\α})}^{l+1}{Q}_0$

$\⇒E_l-M_n={(1-\mathrm{\α})}^{l+1}(E_0-M_n)$

$\⇒E_l={(1-\mathrm{\α})}^{l+1}{E}_0+(1-{(1-\mathrm{\α})}^{l+1})M_n$

$\⇒F_n={(1-\mathrm{\α})}^{l+1}{F}_{n-1}+(1-{(1-\mathrm{\α})}^{l+1})M_n$

Make β=1-(1-α) ^L+1, then have:

F _n＝(1-β)F _n-1+βM _n

(3)

Therefore, if the l of Measuring Time doubly reports as requested, obtain satisfactory filter effect, the filterable agent of Cai Yonging is so:

β＝1-(1-α) ^l+1

The scheme that the present invention proposes is according to the filterable agent of adjusting layer 3 measuring period, realizes that UE when be the multiple of network requirement measuring period measuring period, satisfies the physical layer reporting measurement data smoothing filter effect of network requirement.

Description of drawings

Fig. 1 is a flow chart of adjusting the measurement result filter method of filterable agent in one embodiment of the invention.

Embodiment

Further specify the embodiment of technical solution of the present invention below in conjunction with accompanying drawing.

As shown in Figure 1, for the described adjustment filterable agent of the embodiment of the invention carry out measurement result filter flow chart, its concrete steps are:

Step 101: obtain the measurement report cycle that physical layer is supported.

Step 102: measurement report cycle that the Computational Physics layer is supported and the multiple between the measuring period of network requirement.

Step 103: adjust filterable agent.

Step 104: the layer 3 that carries out measurement result filters.

Specifically, a kind of physical layer reporting measurement data smoothing filter method of the present invention may further comprise the steps:

Obtain the physical layer support and measure report cycle T

Calculate described physical layer support and measure report cycle T for the network requirement measurement period T ₀Multiple l, here, l satisfies formula: T=lT ₀, l=1,2,3 ...;

The idle message that sends from network obtains the first filterable agent α, this first filterable agent α according to described physical layer with the network requirement measurement period T ₀Level and smooth filtration during reported data requires to obtain, and meets formula: F ' _n=(1-α) F ' _N-1+ α M _n, M wherein _nBe described physical layer reporting measurement data, F ' _nAnd F ' _N-1Measurement data after be filtering, n=1 here, 2,3 ...;

Calculate second filterable agent β=1-(1-α) ^L+1

After first measurement data of described physical layer reports, the measurement result F that order is filtered ₀=M ₀

According to formula: F _n=(1-β) F _N-1+ β M _nTo the follow-up physical layer reporting measurement data filter that reports, wherein M _nFor described physical layer reporting measurement data, obtain F _nAnd F _N-1Measurement data after be filtering, n=1 here, 2,3 ....

Claims (1)

1. a physical layer reporting measurement data smoothing filter method is characterized in that, may further comprise the steps:

Obtain the physical layer support and measure report cycle T;

Calculate described physical layer support and measure report cycle T for the network requirement measurement period T ₀Multiple l, here, l satisfies formula: T=lT ₀, l=1,2,3 ...;

The idle message that sends from network obtains the first filterable agent α, this first filterable agent α according to described physical layer with the network requirement measurement period T ₀Level and smooth filtration during reported data requires to obtain, and meets formula: F ' _n=(1-α) F ' _N-1+ α M _n, M wherein _nBe described physical layer reporting measurement data, F ' _nAnd F ' _N-1Measurement data after be filtering, n=1 here, 2,3 ...;

Calculate second filterable agent β=1-(1-α) ^L+1

After first measurement data of described physical layer reports, the measurement result F that order is filtered ₀=M ₀

According to formula: F _n=(1-β) F _N-1+ β M _nTo the follow-up physical layer reporting measurement data filter that reports, wherein M _nFor described physical layer reporting measurement data, obtain F _nAnd F _N-1Measurement data after be filtering, n=1 here, 2,3 ....

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