CN101674597A - Method and device for evaluating interferences of different systems to terminal and overall interferences to terminal - Google Patents

Abstract

The invention relates to a method for evaluating the interferences of different systems to a terminal, which comprises the steps of evaluating spurious interference, intermodulation interference and adjacent channel interference generated by each RRU base-station transmitter; evaluating the interferences of the different systems to the terminal of each RRU base station transmitter according to thespurious interference, the intermodulation interference and the adjacent channel interference; and evaluating the interferences of the different systems to the terminal of all the RRU base station transmitters according to the interferences of the different systems to the terminal of each RRU base station transmitter. Meanwhile, the invention further provides the method for evaluating the comprehensive interferences to the terminal, which comprises the interferences of the system and the interferences of the different systems. The use of the method can better evaluate the interferences of thebase station transmitters of a multi-mold system to the terminal.

Description

To the different system interference of terminal with to the appraisal procedure and the device of terminal overall interference

Technical field

The present invention relates to the communications field, particularly, relate to a kind of many RRU of multimode system (Regenerative Repeater Unit: the regenerative repeating unit is also referred to as radio frequency and zooms out) base station transmitter that is used for to the different system interference of terminal with to the appraisal procedure and the device of terminal overall interference.

Background technology

At GSM (Global System of Mobile communications, global system for mobile communications) and Universal Mobile Telecommunications System (Universal MobileTelecommunications System, abbreviate UMTS as) in the dual mode system, GSM carrier frequency and the UMTS carrier frequency common RRU that can stand altogether, sharing on this hardware can reduce the base station equipment cost significantly.

For the transmitting terminal of GSM and UMTS dual-mode base station, the interference between two system's carrier frequency is mainly considered clutter interference, Intermodulation Interference and monkey chatter to the interference that mobile phone causes.

Clutter interference (Spurious Emissions:SE) is defined as: it is a kind of that additive noise disturbs, and is the noise of interference source in disturbed operation of receiver frequency range generation, makes the signal-to-noise ratio degradation of disturbed receiver.The band that transmitter produces is outer as shown in Figure 1 spuious.According to motion, assessment transmitter clutter interference is mainly studied spuious generation probability and is disturbed size.

Intermodulation Interference (InterModulation:IM) is defined as: when two above different frequency signals act on a nonlinear circuit, to intermodulate, produce new frequency signal output, if this frequency just in time drops in other wireless telecommunication system operation of receiver channel widths, then constitute interference to this receiver.Because operator when runing GSM and UMTS system, can use band pass filter will be with outer the interference to filter, therefore, the main mode that third order intermodulation influences GSM and UMTS systematic function shows as interference in the band, and transmitter produces in-band intermodulation and disturbs as shown in Figure 2.When two interference signal unequal powers, as Fig. 3, the interference power of frequency f1 is P1, and the interference power of frequency f2 is P2, and the intermodulation product of generation is respectively P31, P32 in the size that frequency (2f1-f2), (2f2-f1) locate.Make intermodulation distortion (Intermodulation Distortion:IMD3) be IMD3=P1+P2-2IIP3 (IIP3 is the equipment IIP 3), represent with index IMD3, emission intermodulation product size is P31=P1-IMD3, P32=P2-IMD3.

Monkey chatter (Adjacent channel interference:ACI) is defined as: be meant at the receiver first adjacent high reject signal that exists frequently, owing to reason such as filter remnants, reciprocal mixing and passage be non-linear, the receiver performance that causes worsens, as shown in Figure 4.Usually (Adjacent Channel power Leakage Ratio: Adjacent Channel Leakage Ratio) (Adjacent Channel Selectivity: adjacentchannel selectivity) index calculates the index ACIR (Adjacent ChannelInterference Ratio: monkey chatter is compared) that weighs the monkey chatter size, and computing formula is as follows for index and receiver ACS with transmitter ACIR.

$\mathrm{ACIR}=\frac{1}{\frac{1}{\mathrm{ACLR}}+\frac{1}{\mathrm{ACS}}}$

The inventor finds that there is following problem at least in prior art: correlation technique has only provided the appraisal procedure at certain interference, but for dual mode system, because GSM is the narrow band signal of 200kHz, UMTS is a broadband signal, carrier bandwidths is different and can't assess the different system interference of base station transmitter to terminal (as mobile phone), also can't assess the integrated interference to terminal.

Summary of the invention

At can not in multimode system, assessing many RRU base transceiver station to the different system interference of terminal with to the problem of the integrated interference of terminal, the present invention aim to provide a kind of to terminal different system interference and to the appraisal procedure and the device of terminal overall interference, to address the above problem.

According to an aspect of the present invention, provide a kind of appraisal procedure that is used for the base station transmitter of the many RRU of multimode to the different system interference of terminal, having comprised:

Assess clutter interference, Intermodulation Interference and monkey chatter that each RRU base station transmitter produces;

According to clutter interference, Intermodulation Interference and monkey chatter, assess the different system interference of each RRU base station transmitter to terminal;

According to each RRU base station transmitter the different system interference of terminal is assessed the different system interference of all RRU base station transmitters to terminal.

Further, assessing the clutter interference that each RRU base station transmitter produces specifically comprises:

The bandwidth of base station transmitter place pattern is split into n narrow band bandwidth, then being calculated as of clutter interference SEj:

${\mathrm{SE}}_j=10*\log \left(\underset{q=1}{\overset{\mathrm{<figure-callout\; id="10"\; label="n"\; filenames="A2009101906990032H1.png,A2009101906990033H1.png"\; state="\{\{state\}\}">n</figure-callout>}}{\mathrm{\&Sigma;}}}{10}^{{\mathrm{SE}}_q/10}\right),$ Wherein ${\mathrm{SE}}_q=\left\{\begin{array}{cc}{P}_{\mathrm{SE}2},& p2\\ 0,& 1-p2\end{array}\right..$ Wherein, SE _jRepresent the clutter interference that j base station transmitter produces, p2 represents that j base station transmitter produces spuious probability, P _SE2The size of clutter interference under the expression test bandwidth;

Wherein, spuious Probability p 2=0.2 * (1+0.05) ^N-1, narrow band bandwidth is predefined test bandwidth.

Further, assessing the Intermodulation Interference that each RRU base station transmitter produces specifically comprises:

The bandwidth of the broadband mode in the Multi-Mode Base Station transmitter is split into the bandwidth of n the narrow band mode in the Multi-Mode Base Station transmitter; the frequency of n narrow band bandwidth produces intermodulation product with the GSM frequency respectively; relatively the frequency of intermodulation product and different system terminal receive bandwidth; if the intermodulation product that has Q carrier wave to produce drops into different system terminal and receives in the bandwidth, then being calculated as of Intermodulation Interference IMi: ${\mathrm{IM}}_i=10*\log \left(\underset{L=1}{\overset{Q}{\mathrm{\&Sigma;}}}{10}^{P_L/10}\right)-\mathrm{IMD}3,$ P wherein _LBe the power P after converting through bandwidth _L=P _RRUi-10*log (n), IMD3 are agreement regulation intermodulation index.

Further, assessing the monkey chatter that each RRU base station transmitter produces specifically comprises:

Analyze base station transmitter receives band A CLR and different system terminal at different system terminal ACS;

According to formula $\mathrm{ACIR}=\frac{1}{\frac{1}{\mathrm{ACLR}}+\frac{1}{\mathrm{ACS}}}$ Obtain monkey chatter and compare ACIR;

Than ACIR, calculating monkey chatter ACIj is according to monkey chatter:

ACI _j=P _RRUj-ACIR, wherein P _RRUiIt is the transmitting power of j base station transmitter.

Further, many RRU of multimode base station transmitter is GSM and many RRU of UMTS bimodulus base station transmitter.

Further, according to clutter interference, Intermodulation Interference and monkey chatter, assess each RRU base station transmitter the different system interference of terminal specifically comprised:

According to clutter interference, Intermodulation Interference and monkey chatter, the interference of assessing each RRU base station transmitter generation is:

P _{RRUj-OtherSys}=Max (SEj, IMj, ACIj), and wherein, P _{RRUj-OtherSys}Represent the interference that j RRU base station transmitter produces, SE _j, IM _jRepresent clutter interference, Intermodulation Interference and the monkey chatter that j multi-carrier base station transmitter produces respectively with ACIj.

Each the RRU base station transmitter of interference calculation that produces according to each RRU base station transmitter to the different system interference of terminal is:

$I_{\mathrm{RRUj}-\mathrm{OtherSys}}={10}^{(P_{\mathrm{RRUj}-\mathrm{OtherSys}}-{\mathrm{PL}}_j)/10},$ PL wherein _jBe the path loss of RRUj to terminal.

Further, all RRU base station transmitters to the different system interference of terminal are:

$I_{\mathrm{OtherSys}}=10*\log \left(\underset{i=1}{\overset{m}{\mathrm{\&Sigma;}}}{I}_{\mathrm{RRUi}-\mathrm{OtherSys}}\right),$ Wherein m is the quantity of RRU base station transmitter.

According to another aspect of the present invention, provide a kind of appraisal procedure that is used for the base station transmitter of the many RRU of multimode to the integrated interference of terminal, it is characterized in that, having comprised:

Assess of the native system interference of each RRU base station transmitter to terminal;

Assess the different system interference of each RRU base station transmitter to terminal;

According to each RRU base station transmitter the native system interference and the different system interference of terminal are assessed the interference of all RRU base station transmitters to terminal; Wherein, different system interference obtains according to the method for claim 1.

Further, multimode system is GSM and UMTS dual mode system, each RRU base station transmitter comprises co-channel interference and adjacent interference frequently to the native system interference of GSM terminal, and each RRU base station transmitter comprises this area interference and adjacent area interference to the native system interference of UMTS terminal.

According to another aspect of the present invention, provide a kind of apparatus for evaluating that is used for many RRU of multimode base station transmitter to the different system interference of terminal, having comprised:

Single interference assessment module is used to assess clutter interference, Intermodulation Interference and the monkey chatter that each RRU base station transmitter produces;

Single RRU base station transmitter is used for according to clutter interference, Intermodulation Interference and monkey chatter terminal interference assessment module, assesses the different system interference of each RRU base station transmitter to terminal;

All RRU base station transmitters are used for according to each RRU base station transmitter the different system interference of terminal being assessed the different system interference of all RRU base station transmitters to terminal to the different system interference evaluation module of terminal.

According to another aspect of the present invention, provide a kind of comprehensive assessment device that many RRU of multimode base station transmitter disturbs terminal that is used for, it is characterized in that, having comprised:

Different system interference evaluation module is used to assess the different system interference of each RRU base station transmitter to terminal;

Native system interference assessment module is used to assess the native system interference of each RRU base station transmitter to terminal;

The integrated interference evaluation module is used for according to each RRU base station transmitter the native system interference and the different system interference of terminal being assessed the interference of all RRU base station transmitters to terminal;

Wherein, different system interference evaluation module further comprises:

Single interference assessment module is used to assess clutter interference, Intermodulation Interference and the monkey chatter that each RRU base station transmitter produces;

Single RRU base station transmitter is used for according to clutter interference, Intermodulation Interference and monkey chatter terminal interference assessment module, assesses the different system interference of each RRU base station transmitter to terminal;

All RRU base station transmitters are used for according to each RRU base station transmitter the different system interference of terminal being assessed the different system interference of all RRU base station transmitters to terminal to the different system interference evaluation module of terminal

Provide the Multi-Mode Base Station transceiver station to the different system interference appraisal procedure of terminal by this method, comprise that transmitter clutter interference, transmitter intermodulation disturb and monkey chatter, solved in many RRU of multimode system can't the comprehensive assessment base station transmitter to the problem of the different system interference of terminal, can more reasonably assess the influence of interference to power system capacity and covering; Simultaneously, also provide the solution of Multi-Mode Base Station transceiver station, can carry out reasonable assessment the interference of terminal to the assessment of terminal integrated interference.

Description of drawings

Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:

Fig. 1 shows the outer clutter interference schematic diagram of transmitter strap of prior art;

Fig. 2 shows the GSM transmitter in-band intermodulation schematic diagram of prior art;

The unequal power signal that Fig. 3 shows prior art produces the inter-modulated signal schematic diagram;

Fig. 4 shows the monkey chatter schematic diagram of prior art;

Fig. 5 shows GSM and UMTS frequency spectrum profile;

Fig. 6 shows and is used for the flow chart of many RRU of dual mode system base station transmitter to the appraisal procedure of the different system interference of terminal according to the embodiment of the invention;

Fig. 7 shows embodiment of the invention GSM and the UMTS bimodulus is total to the overview flow chart that RRU system evaluation UMTS transmitter disturbs GSM mobile handset;

Fig. 8 shows embodiment of the invention GSM and the UMTS bimodulus is total to the overview flow chart that RRU system evaluation GSM transmitter disturbs the UMTS mobile phone;

Fig. 9 shows according to the single base station transmitter of the embodiment of the invention schematic diagram to the different system interference evaluation module of terminal;

Figure 10 shows according to the multimode system base station transmitter of the embodiment of the invention schematic diagram to terminal integrated interference evaluation module.

Embodiment

Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the present invention in detail.

Embodiment one

Fig. 6 show according to the embodiment of the invention be used for the flow chart of many RRU of dual mode system base station transmitter to the appraisal procedure of the different system interference of terminal, comprising:

Step S10 assesses clutter interference, Intermodulation Interference and monkey chatter that each RRU base station transmitter produces;

Step S20 according to clutter interference, Intermodulation Interference and monkey chatter, assesses the different system interference of each RRU base station transmitter to terminal;

Step S30 assesses the different system interference of all RRU base station transmitters to terminal according to each RRU base station transmitter to the different system interference of terminal.

In many RRU of bimodulus system; this embodiment is based on the GSM problem different with the UMTS carrier bandwidths; solved the dual-mode base station transceiver station to the different system interference assessment of terminal; comprise that transmitter clutter interference, transmitter intermodulation disturb and monkey chatter; solved in many RRU of bimodulus system can't the comprehensive assessment base station transmitter to the problem of the different system interference of terminal, can more reasonably assess the influence of interference to power system capacity and covering.

Embodiment two

At GSM and the UMTS dual mode system of a plurality of RRU, the dual-mode base station transmitter is as follows to the appraisal procedure of the different system interference of GSM mobile handset:

Suppose that the frequency that GSM mobile handset is used is f, and this mobile phone can receive the signal from m bimodulus RRU, be respectively RRU1, RRU2 ... RRUm.

1) assessing each bimodulus RRU UMTS system transmitter to the clutter interference that GSM mobile handset (different system) produces, is example with RRUi.The GSM bandwidth is split into n narrow band signal (test bandwidth), is 100kHz as measuring bandwidth, needs that then the GSM bandwidth is split into 2 and measures bandwidth, i.e. n=2.The spuious index P of UMTS on the GSM frequency range from 3GPP agreement TS25.101 _SE1, this is spuious according to Probability p 1=0.2 * (1+0.05) ^N-1Occur, then being calculated as of clutter interference SEi:

${\mathrm{SE}}_i=10*\log \left(\underset{q=1}{\overset{\mathrm{<figure-callout\; id="10"\; label="n"\; filenames="A2009101906990032H1.png,A2009101906990033H1.png"\; state="\{\{state\}\}">n</figure-callout>}}{\mathrm{\&Sigma;}}}{10}^{{\mathrm{SE}}_q/10}\right),$ Wherein ${\mathrm{SE}}_q=\left\{\begin{array}{cc}{\mathrm{<figure-callout\; id="1"\; label="P\; SE"\; filenames="A2009101906990033H1.png"\; state="\{\{state\}\}">P</figure-callout>}}_{\mathrm{SE}},& \mathrm{<figure-callout\; id="1"\; label="p"\; filenames="A2009101906990033H1.png"\; state="\{\{state\}\}">p</figure-callout>}1\\ 0,& 1-\mathrm{<figure-callout\; id="1"\; label="p"\; filenames="A2009101906990033H1.png"\; state="\{\{state\}\}">p</figure-callout>}1\end{array}\right..,$ Wherein, SE _iRepresent the clutter interference that i dual-mode base station UMTS transmitter produces, p1 represents that i dual-mode base station UMTS transmitter produces spuious probability, P _SE1The size of clutter interference under the expression test bandwidth.

2) assess the Intermodulation Interference that each bimodulus RRU UMTS system transmitter produces GSM mobile handset (different system), it still is example with RRUi, the UMTS bandwidth of operation need be split as the narrow band bandwidth of n GSM, as shown in Figure 5, it produces the individual intermodulation product of n* (n-1) with GSM mobile handset frequency f respectively, relatively the frequency of intermodulation product and GSM mobile handset receive bandwidth, suppose that the intermodulation product that has Q carrier wave to produce drops into GSM mobile handset and receives in the bandwidth, then being calculated as of Intermodulation Interference IMi: ${\mathrm{IM}}_i=10*\log \left(\underset{L=1}{\overset{Q}{\mathrm{\&Sigma;}}}{10}^{P_L/10}\right)-\mathrm{IMD}3,$ Wherein PL is the power after converting through bandwidth (consider that bandwidth splits into n part, the power energy also becomes 1/n) P _L=P _RRUi-10*log (n), IMD3 are agreement regulation intermodulation index.

3) assessing the monkey chatter of each bimodulus RRU UMTS system (different system) transmitter, is example with RRUi, at first analyzes the UMTS transmitter and receives the ACS of band A CLR and GSM mobile handset in GSM mobile handset, adopts formula $\mathrm{ACIR}=\frac{1}{\frac{1}{\mathrm{ACLR}}+\frac{1}{\mathrm{ACS}}}$ Obtain final ACIR, then being calculated as of monkey chatter ACIi: ACI _i=P _RRUi-ACIR, wherein P _RRUiUMTS transmitting power for RRUi.

Said process provides assesses clutter interference, Intermodulation Interference and the monkey chatter specific embodiments that each RRU base station transmitter produces.

4) interference of each bimodulus RRU UMTS system (different system) transmitter of comprehensive assessment is an example with RRUi:

P _{RRUi-OtherSys}(ACIi), wherein the Max function is to get maximum in a plurality of values to=Max for SEi, IMi.

5) assessing each bimodulus RRU UMTS system (different system) transmitter and disturb the reception of falling in the mobile phone to disturb, is example with RRUi:

$I_{\mathrm{RRUi}-\mathrm{OtherSys}}={10}^{(P_{\mathrm{RRUi}-\mathrm{OtherSys}}-{\mathrm{PL}}_i)/10}$ (interference of mobile phone receiving terminal equals the transmitter interference and deducts path loss), wherein PL _iBe the path loss of RRUi to GSM mobile handset.

Said process provides assesses the specific embodiments of each RRU base station transmitter to the different system interference of terminal.

6a) all bimodulus RRU systems of comprehensive assessment to the different system interference of GSM mobile handset are:

$I_{\mathrm{OtherSys}}=10*\log \left(\underset{i=1}{\overset{m}{\mathrm{\&Sigma;}}}{I}_{\mathrm{RRUi}-\mathrm{OtherSys}}\right),$ Wherein m is the quantity of bimodulus RRU.

This process adds up and obtains the interference of all RRU base station transmitters to terminal by each RRU base station transmitter is carried out linearity to the different system interference of terminal, and then has realized that the comprehensive assessment base station transmitter is to the different system interference of terminal in many RRU of bimodulus system.

Embodiment three

At GSM and UMTS dual-mode base station system, the interference that the mobile phone receiver is received also has native system to disturb except different system interference.Mainly consider to disturb for GSM mobile handset during native system disturbs, mainly consider this area interference and adjacent area interference for the UMTS mobile phone from the co-channel interference and the adjacent frequency of all base station frequency points.

After the different system interference of each RRU base transceiver station that obtains based on the step 5 in the foregoing description to terminal, as shown in Figure 7,

6b) assessing the co-channel interference of each bimodulus RRU gsm system (native system) transmitter to the GSM mobile handset receiver, is example with RRUi.Suppose among this RRU GSM activate have in the carrier frequency N with the GSM mobile handset frequency f with frequently, then co-channel interference is calculated as:

$I_{\mathrm{RRUi}-\mathrm{Co}}=\underset{n=1}{\overset{N}{\mathrm{\&Sigma;}}}{10}^{(P_{\mathrm{RRUi}-\mathrm{TRXn}}-{\mathrm{PL}}_i)/10},$ P wherein _RRUi-TRXnBe n transmitting power that activates carrier frequency, PL _iBe the path loss of RRUi to GSM mobile handset.

7) assessing each bimodulus RRU gsm system (native system) transmitter the adjacent of GSM mobile handset receiver disturbed frequently, is example with RRUi.Supposing has L and the GSM mobile handset frequency f first adjacent frequency in the GSM activation carrier frequency among this RRU, then neighbour's interference calculation frequently is:

$I_{\mathrm{RRUi}-\mathrm{Ac}}=\underset{l=1}{\overset{L}{\mathrm{\&Sigma;}}}{10}^{(P_{\mathrm{RRUi}-{\mathrm{TRX}}_l}-{\mathrm{ACIR}}_1-{\mathrm{PL}}_i)/10},$ Wherein

Be the 1st transmitting power that activates carrier frequency, ACIR ₁Be the first adjacent monkey chatter ratio frequently, PL _iBe the path loss of RRUi to GSM mobile handset.

8) each bimodulus RRU system of comprehensive assessment is example to the interference of GSM mobile handset with RRUi:

I _RRUi＝I _{RRUi-OtherSys}+I _RRUi-Co+I _RRUi-Ac

9) all bimodulus RRU systems of comprehensive assessment to the interference of GSM mobile handset are:

$I=10*\log \left(\underset{i=1}{\overset{m}{\mathrm{\&Sigma;}}}{I}_{\mathrm{RRUi}}\right),$ Wherein m is the quantity of bimodulus RRU.

Embodiment four

As follows for the dual-mode base station transmitter to the appraisal procedure of the different system interference of UMTS mobile phone and integrated interference, as shown in Figure 8:

Suppose that the frequency that the UMTS mobile phone uses is F, and this mobile phone can receive the signal from M RRU, be respectively RRU1, RRU2 ... RRUm.

1) assessing each bimodulus RRU gsm system transmitter to the clutter interference that terminal (different system) produces, is example with RRUj.Assessment dual-mode base station GSM in the spurious signal that receives on the frequency range, need split into n narrow band signal (measurement bandwidth) to the UMTS bandwidth to the UMTS mobile phone, as shown in Figure 5, and the spuious index P of GSM on the UMTS frequency range from 3GPP agreement TS45.005 _SE2, this is spuious according to Probability p 2=0.2 * (1+0.05) ^N-1Occur, through disturbing the summation that adds up, can obtain then being calculated as of clutter interference SEj then:

${\mathrm{SE}}_j=10*\log \left(\underset{q=1}{\overset{\mathrm{<figure-callout\; id="10"\; label="n"\; filenames="A2009101906990032H1.png,A2009101906990033H1.png"\; state="\{\{state\}\}">n</figure-callout>}}{\mathrm{\&Sigma;}}}{10}^{{\mathrm{SE}}_q/10}\right),$ Wherein ${\mathrm{SE}}_q=\left\{\begin{array}{cc}{P}_{\mathrm{SE}2},& p2\\ 0,& 1-p2\end{array}\right..$ Wherein, SE _jRepresent the clutter interference that j dual-mode base station GSM transmitter produces, p2 represents that j dual-mode base station GSM transmitter produces spuious probability, P _SE2The size of clutter interference under the expression test bandwidth.

2) assess the Intermodulation Interference that each bimodulus RRU gsm system transmitter produces terminal (different system), with RRUj is example, the UMTS bandwidth of operation need be split as the narrow band bandwidth of n GSM, as shown in Figure 5, itself and GSM mobile handset frequency f produce intermodulation product one by one, the intermodulation product that wherein has Q carrier wave to produce falls into the UMTS mobile phone and receives in the bandwidth, then being calculated as of Intermodulation Interference IMj: ${\mathrm{IM}}_j=10*\log \left(\underset{L=1}{\overset{Q}{\mathrm{\&Sigma;}}}{10}^{P_L/10}\right)-\mathrm{IMD}3,$ Wherein PL is that L product converted the back value through bandwidth, and IMD3 is an agreement regulation intermodulation index.

3) assessing the monkey chatter of each bimodulus RRU gsm system (different system) transmitter, is example with RRUj, at first analyzes the GSM transmitter and receives the ACS of band A CLR and UMTS mobile phone at the UMTS mobile phone, adopts formula $\mathrm{ACIR}=\frac{1}{\frac{1}{\mathrm{ACLR}}+\frac{1}{\mathrm{ACS}}}$ Obtain final ACIR, then being calculated as of monkey chatter ACIj: ACI _j=P _JBS-ACIR, wherein P _JBSGSM transmitting power for RRUj.

4) interference of each bimodulus RRU gsm system (different system) transmitter of comprehensive assessment is an example with RRUj:

P _{RRUj-OtherSys}(ACIj), wherein the Max function is to get maximum in a plurality of values to=Max for SEj, IMj.

5) assessing each bimodulus RRU gsm system (different system) transmitter and disturb the reception of falling in the mobile phone to disturb, is example with RRUj:

$I_{\mathrm{RRUj}-\mathrm{OtherSys}}={10}^{(P_{\mathrm{RRUj}-\mathrm{OtherSys}}-{\mathrm{PL}}_j)/10},$ PL wherein _jBe the path loss of RRUj to the UMTS mobile phone.

6) assessing each bimodulus RRU UMTS system (native system) transmitter this area interference to the mobile phone receiver, is example with RRUj:

$I_{\mathrm{RRUj}-\mathrm{OwnSys}-\mathrm{OwnCell}}=\left\{\begin{array}{c}{10}^{(P_{\mathrm{RRUj}-\mathrm{OwnSys}-\mathrm{OwnCell}}+10*\log \left(\mathrm{\&alpha;}\right)-{\mathrm{PL}}_j)/10}\\ 0\end{array}\right.,$ When being the home cell RRU of this UMTS mobile phone, gets RRUj ${10}^{(P_{\mathrm{RRUj}-\mathrm{OwnSys}-\mathrm{OwnCell}}+10*\log \left(\mathrm{\&alpha;}\right)-{\mathrm{PL}}_j)/10},$ And when RRUj is not the home cell RRU of this UMTS mobile phone, do not get 0.P wherein _{RRUj-OwnSys-OwnCell}Be the transmitting power of sub-district, α is the orthogonal factor of this sub-district, PL _jBe the path loss of RRUj to the UMTS mobile phone.

7) assessing each bimodulus RRU UMTS system (native system) transmitter other area interference to the mobile phone receiver, is example with RRUj:

$I_{\mathrm{RRUj}-\mathrm{OwnSys}-\mathrm{OtherCell}}=\left\{\begin{array}{c}{\underset{n=1}{\overset{N}{\mathrm{\&Sigma;}}}10}^{(P_{\mathrm{RRUj}-\mathrm{OwnSys}-\mathrm{OtherCell}}-{\mathrm{PL}}_j)/10}\\ 0\end{array}\right.,$ When not being the home cell RRU of this UMTS mobile phone, do not get RRUj $\underset{n=1}{\overset{N}{\mathrm{\&Sigma;}}}{10}^{(P_{\mathrm{RRUj}-\mathrm{OwnSys}-\mathrm{OtherCell}}-{\mathrm{PL}}_j)/10},$ And when RRUj is the home cell RRU of this UMTS mobile phone, get 0.P wherein _{RRUj-OwnSys-OtherCell}Be the transmitting power of other sub-district, PL _iBe the path loss of RRUi to the UMTS mobile phone.

8) each bimodulus RRU of comprehensive assessment is example to the interference of UMTS mobile phone with RRUj:

I _RRUj＝I _{RRUj-OtherSys}+I _{RRUj-OwnSys-OwnCell}+I _{RRUj-OwnSys-OtherCell}

9) all bimodulus RRU of comprehensive assessment to the interference of UMTS mobile phone are:

$I=10*\log \left(\underset{j=1}{\overset{m}{\mathrm{\&Sigma;}}}{I}_{\mathrm{RRUj}}\right),$ Wherein m is the quantity of bimodulus RRU.

Embodiment five, bimodulus RRU transmitter are to the interference assessment of GSM mobile handset

3 RRU in 3 sectors are example with every dual-mode base station, and the enforcement of 7 pairs of technical schemes is described in further detail in conjunction with the accompanying drawings:

Suppose that system under evaluation is 3 bimodulus RRU in 3 sectors, 1 base station (RRU1, RRU2, RRU3), the UMTS frequency is respectively F1, F2, F3, the GSM frequency is respectively f1～f6 (RRU1), f7～f12 (RRU2), f13～f18 (RRU3), supposes that the GSM testing mobile phone uses frequency to be f.Consider to disturb the most serious situation, suppose that bimodulus RRU is according to maximum power P _Max=43dBm emission.

Assess the clutter interference that each bimodulus RRU UMTS (different system) transmitter produces: with RRU1 is example, and other RRU are similar.At first UMTS 3.84MHz bandwidth is split into 19 GSM 200kHz narrow band bandwidth, spuious Probability p 1=0.2* (1+0.05) ^19-1=0.4813, clutter interference size P _SE1=-95dBm.Suppose to satisfy and produce spuious probability, SE1=P _SE1=-95dBm.

Assess the Intermodulation Interference that each bimodulus RRU UMTS (different system) transmitter produces: with RRU1 is example, and other RRU are similar.At first UMTS 3.84MHz bandwidth is split into 19 GSM 200kHz narrow band bandwidth, splitting the single narrow band signal in back is P through the power after converting _L=P _Max-10*log (19)=30.2dBm then can produce 19* (19-1)=342 intermodulation product, supposes wherein to have 5 intermodulation products to drop in the GSM mobile handset receiver bandwidth, and then Intermodulation Interference is calculated as

$\mathrm{<figure-callout\; id="1"\; label="IM"\; filenames="A2009101906990033H1.png"\; state="\{\{state\}\}">IM</figure-callout>}1=10*\log \left(\underset{L=1}{\overset{5}{\mathrm{\&Sigma;}}}{10}^{P_L/10}\right)-\mathrm{IMD}3=10*\log \left(\underset{L=1}{\overset{5}{\mathrm{\&Sigma;}}}{10}^{30.2/10}\right)-70=-31\mathrm{dBm}.$

Assess the monkey chatter that each bimodulus RRU UMTS (different system) transmitter produces: with RRU1 is example, and other RRU are similar.The centre frequency of supposing UMTS base station carrier F1 and GSM mobile handset carrier wave f is spaced apart 2.8MHz, then looks into agreement UMTS base station transmitter ACLR=84dBc, and GSM mobile handset receiver ACS temporarily do not consider, thereby obtains ACIR=84dBc, and then monkey chatter is calculated as

ACI ₁＝P _BS-ACIR＝43-84＝-41dBm。

The interference of each bimodulus RRU UMTS system (different system) transmitter of comprehensive assessment: with RRU1 is example, and other RRU are similar.

P _{RRU1-OtherSys}＝Max(SE ₁，IM ₁，ACI ₁)＝-31dBm。

Assessing each bimodulus RRU UMTS system (different system) transmitter and disturb the reception of falling in the mobile phone to disturb, is example with RRU1, and other RRU is similar.Suppose PL1=110dB:

$I_{\mathrm{RRU}1-\mathrm{OtherSys}}={10}^{(P_{\mathrm{RRU}1-\mathrm{OtherSys}}-{\mathrm{PL}}_1)/10}={10}^{(-31-110)/10}=7.94\&times;{10}^{-15}\mathrm{mw}$

Assessing the co-channel interference of each bimodulus RRU gsm system (native system) transmitter to the mobile phone receiver, is example with RRU1.Supposing has 1 and the same frequency of GSM mobile handset frequency f in the GSM activation carrier frequency among this RRU1, then co-channel interference is calculated as:

I _RRUi-Co=10 ^(43-110)/10=2.0 * 10 ^-7Mw supposes $P_{{\mathrm{RRU}}_1-\mathrm{TRXn}}=43\mathrm{dBm},$ PL ₁＝110dB。

Assessing each bimodulus RRU gsm system (native system) transmitter the adjacent of mobile phone receiver disturbed frequently, is example with RRU1.Supposing has 2 and the GSM mobile handset frequency f first adjacent frequency in the GSM activation carrier frequency among this RRU, then the interference calculation of adjacent frequency is:

$I_{{\mathrm{RRU}}_1-\mathrm{Ac}}=\underset{l=1}{\overset{2}{\mathrm{\&Sigma;}}}{10}^{(43-18-110)/10}=6.32\&times;{10}^{-9}\mathrm{mw},$ Suppose $P_{{\mathrm{RRU}}_1-{\mathrm{TRX}}_l}=43\mathrm{dBm},$ ACIR ₁＝18dB，PL ₁＝110dB。

Each bimodulus RRU system of comprehensive assessment is example to the interference of GSM mobile handset with RRU1:

I _RRU1＝7.94×10 ^-15+2×10 ^-7+6.32×10 ^-9＝2.063×10 ^-7mw

All RRU of comprehensive assessment are to the interference of mobile phone, then need each RRU through aforesaid operations is disturbed linearity summation that adds up, thereby obtain the interference assessment of whole system to mobile phone.

Embodiment six, bimodulus RRU transmitter are to the interference assessment of UMTS mobile phone

3 RRU in 3 sectors are example with every dual-mode base station, and the enforcement of 8 pairs of technical schemes is described in further detail in conjunction with the accompanying drawings:

Suppose that system under evaluation is 3 bimodulus RRU in 3 sectors, 1 base station (RRU1, RRU2, RRU3), the GSM base station frequency point is respectively f1, f2, f3, supposes that the UMTS testing mobile phone uses frequency to be F.Consider to disturb the most serious situation, suppose that bimodulus RRU is according to maximum power P _Max=43dBm emission.

Assess the clutter interference that each bimodulus RRU gsm system (different system) transmitter produces: with RRU1 is example, and other RRU are similar.At first UMTS 3.84MHz bandwidth is split into 19 GSM 200kHz narrow band bandwidth, spuious Probability p 1=0.2* (1+0.05) ^1-1=0.2, clutter interference size P _SE2=-98dBm.Suppose 19 satisfy to produce spuious probability have 5, then $\mathrm{<figure-callout\; id="1"\; label="SE"\; filenames="A2009101906990033H1.png"\; state="\{\{state\}\}">SE</figure-callout>}1=10*\log \left(\underset{q=1}{\overset{5}{\mathrm{\&Sigma;}}}{10}^{{\mathrm{SE}}_q/10}\right)=10*\log (5*{10}^{-98/10})=-91\mathrm{dBm}.$

Assess the intermodulation distortion that each bimodulus RRU gsm system (different system) transmitter produces: with RRU1 is example, and other RRU are similar.At first UMTS 3.84MHz bandwidth is split into 19 GSM 200kHz narrow band bandwidth, splitting the single narrow band signal in back is P through the power after converting _L=P _Max-10*log (19)=30.2dBm then can produce 19* (19-1)=342 intermodulation product, supposes wherein to have 5 intermodulation products to drop in the UMTS mobile phone receiver bandwidth, and then Intermodulation Interference is calculated as

$\mathrm{<figure-callout\; id="1"\; label="IM"\; filenames="A2009101906990033H1.png"\; state="\{\{state\}\}">IM</figure-callout>}1=10*\log \left(\underset{L=1}{\overset{5}{\mathrm{\&Sigma;}}}{10}^{P_L/10}\right)-\mathrm{IMD}3=10*\log \left(\underset{L=1}{\overset{5}{\mathrm{\&Sigma;}}}{10}^{30.2/10}\right)-70=-31\mathrm{dBm}.$

Assess the monkey chatter that each bimodulus RRU gsm system (different system) transmitter produces: with RRU1 is example, and other RRU are similar.The centre frequency of supposing GSM carrier wave f1 and UMTS carrier wave F is spaced apart 2.8MHz, then looks into agreement GSM base station transmitter ACLR=55dBc, UMTS mobile phone receiver ACS=30.5dBc, thus obtain ACIR=30.5dBc, then monkey chatter is calculated as

ACI ₁＝P _BS-ACIR＝43-30.5＝12.5dBm。

The interference of each bimodulus RRU gsm system (different system) transmitter of comprehensive assessment: with RRU1 is example, and other RRU are similar.P _{RRU1-OtherSys}=Max (SE ₁, IM ₁, ACI ₁)=12.5dBm, wherein maximum is asked in the Max representative.

Assessing each bimodulus RRU gsm system (different system) RRU transmitter disturbs the reception interference of falling in the mobile phone to be: be example with RRU1, other RRU are similar.Suppose

$\mathrm{<figure-callout\; id="1"\; label="PL"\; filenames="A2009101906990033H1.png"\; state="\{\{state\}\}">PL</figure-callout>}1=110\mathrm{dB}{I}_{\mathrm{RRU}1-\mathrm{OtherSys}}={10}^{(P_{\mathrm{RRU}1-\mathrm{OtherSys}}-{\mathrm{PL}}_1)/10}={10}^{(125-110)/10}=1.78\&times;{10}^{-10}\mathrm{mw}.$

Assessing each bimodulus RRU UMTS system (native system) transmitter this area interference to the mobile phone receiver, is example with RRU1.If RRU1 is a UMTS mobile phone home cell, P _{RRUj-OwnSys-OwnCell}=43dBm, α=0.6, PL ₁=110dB, this area interference is calculated as: I _{RRU1-OwnSys-OwnCell}=10 ^{(43+10*log (0.6)-110)/10}=1.2 * 10 ^-7Mw.

Assessing each bimodulus RRU UMTS system (native system) transmitter other area interference to the mobile phone receiver, is example with RRU1.Because RRU1 is a UMTS mobile phone home cell, so other area interference is I _{RRU1-OwnSys-OtherCell}=0.

Each bimodulus RRU of comprehensive assessment is example to the interference of UMTS mobile phone with RRU1:

I _RRU1＝1.78×10 ^-10+1.2×10 ^-7＝1.2×10 ^-7mw

All RRU of comprehensive assessment then need each RRU through aforesaid operations is disturbed the summation that adds up, thereby obtain the interference assessment of whole system to mobile phone the interference of mobile phone.

Embodiment seven

Fig. 9 shows and is used for the schematic diagram of many RRU of multimode system base station transmitter to the apparatus for evaluating of the different system interference of terminal according to the embodiment of the invention, this device comprises: single interference assessment module 10 is used to assess clutter interference, Intermodulation Interference and the monkey chatter that each RRU base station transmitter produces; Single RRU base station transmitter is used for according to clutter interference, Intermodulation Interference and monkey chatter terminal interference assessment module 20, assesses the different system interference of each RRU base station transmitter to terminal; All RRU base station transmitters are used for according to each RRU base station transmitter the different system interference of terminal being assessed the different system interference of all RRU base station transmitters to terminal to the different system interference evaluation module 30 of terminal.

Embodiment eight

Figure 10 show according to the embodiment of the invention be used for the schematic diagram of many RRU of multimode system base station transmitter to the apparatus for evaluating of terminal integrated interference, this device comprises: different system interference evaluation module 102, native system interference assessment module 103 and integrated interference evaluation module 101.Particularly, different system interference evaluation module 102 comprises apparatus module shown in Figure 9; Native system interference assessment module 103 is mainly considered mainly to consider this area interference evaluation module and adjacent area interference evaluation module from the co-channel interference evaluation module of all base station frequency points and adjacent interference assessment module frequently for the UMTS mobile phone for GSM mobile handset.Integrated interference evaluation module 101 is according to different system interference evaluation module 102 and native system interference assessment module 103 read group total.

In many RRU of multimode system, this embodiment is owing to the bandwidth with different system is divided into equiband, the different system interference of having assessed terminal comprises that transmitter clutter interference, transmitter intermodulation disturb and the transmitter monkey chatter, solved in many RRU of multimode system can't the comprehensive assessment multi-carrier base station transmitter to the problem of the different system interference of terminal, thereby can more reasonably assess the influence of interference to power system capacity and covering; Cumulated volume system interference and different system interference have obtained the integrated interference to terminal simultaneously, have solved the evaluation problem of under many RRU of multimode base station transmitter situation terminal being disturbed.

Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and carry out by calculation element, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.

The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (11)

1. an appraisal procedure that is used for the base station transmitter of the many RRU of multimode to the different system interference of terminal is characterized in that, comprising:

Assess clutter interference, Intermodulation Interference and monkey chatter that each RRU base station transmitter produces;

According to described clutter interference, described Intermodulation Interference and described monkey chatter, assess the different system interference of described each RRU base station transmitter to terminal;

According to described each RRU base station transmitter the different system interference of terminal is assessed the different system interference of all RRU base station transmitters to terminal.

2. appraisal procedure according to claim 1 is characterized in that, the clutter interference of assessing each RRU base station transmitter generation specifically comprises:

The bandwidth of base station transmitter place pattern is split into n narrow band bandwidth, then being calculated as of clutter interference SEj:

Wherein

Wherein, SE _jRepresent the clutter interference that j base station transmitter produces, p2 represents that j base station transmitter produces spuious probability, P _SE2The size of clutter interference under the expression test bandwidth;

Wherein, described spuious Probability p 2=0.2 * (1+0.05) ^N-1, described narrow band bandwidth is predefined test bandwidth.

3. appraisal procedure according to claim 1 is characterized in that, the Intermodulation Interference of assessing each RRU base station transmitter generation specifically comprises:

The bandwidth of the broadband mode in the Multi-Mode Base Station transmitter is split into the bandwidth of n the narrow band mode in the Multi-Mode Base Station transmitter; the frequency of a described n narrow band bandwidth produces intermodulation product with the GSM frequency respectively; relatively the frequency of intermodulation product and different system terminal receive bandwidth; if the intermodulation product that has Q carrier wave to produce drops into different system terminal and receives in the bandwidth, then being calculated as of Intermodulation Interference IMi:

P wherein _LBe the power P after converting through bandwidth _L=P _RRUi-10*log (n), IMD3 are agreement regulation intermodulation index.

4. appraisal procedure according to claim 1 is characterized in that, the monkey chatter of assessing each RRU base station transmitter generation specifically comprises:

Analyze base station transmitter receives band A CLR and different system terminal at different system terminal ACS;

According to formula $\mathrm{ACIR}=\frac{1}{\frac{1}{\mathrm{ACLR}}+\frac{1}{\mathrm{ACS}}}$ Obtain monkey chatter and compare ACIR;

Than ACIR, calculating monkey chatter ACIj is according to described monkey chatter:

ACI _j=P _RRUj-ACIR, wherein P _RRUiIt is the transmitting power of j base station transmitter.

5. according to each described appraisal procedure of claim 1 to 4, it is characterized in that described many RRU of multimode base station transmitter is GSM and many RRU of UMTS bimodulus base station transmitter.

6. appraisal procedure according to claim 5 is characterized in that, according to described clutter interference, described Intermodulation Interference and described monkey chatter, assesses described each RRU base station transmitter the different system interference of terminal is specifically comprised:

According to described clutter interference, described Intermodulation Interference and described monkey chatter, the interference of assessing described each RRU base station transmitter generation is:

P _{RRUj-OtherSys}=Max (SEj, IMj, ACIj), and wherein, P _{RRUj-OtherSys}Represent the interference that j RRU base station transmitter produces, SE _j, IM _jRepresent clutter interference, Intermodulation Interference and the monkey chatter that j multi-carrier base station transmitter produces respectively with ACIj.

Described each the RRU base station transmitter of interference calculation that produces according to described each RRU base station transmitter to the different system interference of described terminal is:

PL wherein _jBe the path loss of RRUj to terminal.

7. appraisal procedure according to claim 6 is characterized in that, described all RRU base station transmitters to the different system interference of described terminal are:

Wherein m is the quantity of RRU base station transmitter.

8. an appraisal procedure that is used for the base station transmitter of the many RRU of multimode to the integrated interference of terminal is characterized in that, comprising:

Assess of the native system interference of each RRU base station transmitter to terminal;

Assess the different system interference of each RRU base station transmitter to described terminal;

According to described each RRU base station transmitter the native system interference and the different system interference of terminal are assessed the interference of all RRU base station transmitters to described terminal; Wherein, described different system interference method according to claim 1 obtains.

9. appraisal procedure according to claim 8, it is characterized in that, described multimode system is GSM and UMTS dual mode system, described each RRU base station transmitter comprises co-channel interference and adjacent interference frequently to the native system interference of GSM terminal, and described each RRU base station transmitter comprises this area interference and adjacent area interference to the native system interference of UMTS terminal.

10. an apparatus for evaluating that is used for many RRU of multimode base station transmitter to the different system interference of terminal is characterized in that, comprising:

Single interference assessment module is used to assess clutter interference, Intermodulation Interference and the monkey chatter that each RRU base station transmitter produces;

Single RRU base station transmitter is used for according to described clutter interference, Intermodulation Interference and monkey chatter terminal interference assessment module, assesses the different system interference of each RRU base station transmitter to terminal;

All RRU base station transmitters are used for according to described each RRU base station transmitter the different system interference of terminal being assessed the different system interference of all RRU base station transmitters to terminal to the different system interference evaluation module of terminal.

11. one kind is used for the comprehensive assessment device that many RRU of multimode base station transmitter disturbs terminal,

It is characterized in that, comprising:

Different system interference evaluation module is used to assess the different system interference of each RRU base station transmitter to terminal;

Native system interference assessment module is used to assess the native system interference of each RRU base station transmitter to terminal;

The integrated interference evaluation module is used for according to described each RRU base station transmitter the native system interference and the different system interference of terminal being assessed the interference of all RRU base station transmitters to described terminal;

Wherein, described different system interference evaluation module further comprises:

Single interference assessment module is used to assess clutter interference, Intermodulation Interference and the monkey chatter that each RRU base station transmitter produces;

Single RRU base station transmitter is used for according to described clutter interference, Intermodulation Interference and monkey chatter terminal interference assessment module, assesses the different system interference of each RRU base station transmitter to terminal;

All RRU base station transmitters are used for according to described each RRU base station transmitter the different system interference of terminal being assessed the different system interference of all RRU base station transmitters to terminal to the different system interference evaluation module of terminal.

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