CN103299665B - Method, equipment, system and base station for scheduling frequency channel - Google Patents

Method, equipment, system and base station for scheduling frequency channel Download PDF

Info

Publication number
CN103299665B
CN103299665B CN201180055986.7A CN201180055986A CN103299665B CN 103299665 B CN103299665 B CN 103299665B CN 201180055986 A CN201180055986 A CN 201180055986A CN 103299665 B CN103299665 B CN 103299665B
Authority
CN
China
Prior art keywords
frequency
carrier frequency
base station
carrier
chunks
Prior art date
Application number
CN201180055986.7A
Other languages
Chinese (zh)
Other versions
CN103299665A (en
Inventor
G·马奎尔-普初
C·格尔特
V·塞吉
Original Assignee
卡西迪恩联合股份公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to FR1003775 priority Critical
Priority to FR1003775A priority patent/FR2965137B1/en
Application filed by 卡西迪恩联合股份公司 filed Critical 卡西迪恩联合股份公司
Priority to PCT/EP2011/001170 priority patent/WO2012037990A1/en
Publication of CN103299665A publication Critical patent/CN103299665A/en
Application granted granted Critical
Publication of CN103299665B publication Critical patent/CN103299665B/en

Links

Abstract

The present invention relates to the method for scheduling frequency channel being implemented in the equipment of the narrowband radio communication system for sharing identical frequency band with wideband radio communications system, each include base station, arrowband and wide bandwidth base station, and this frequency band is partly divided into the frequency chunks of determined number, each frequency chunks includes to the carrier frequency of determined number, for optionally being distributed to base station, arrowband.This equipment includes for carrier frequency is closed the device (UA) being coupled to base station, arrowband, with the device (UR) for the carrier frequency being associated with base station, arrowband is distributed on frequency band, so that each frequency chunks includes at least two different carrier frequencies group, the base station that each association is different, selects the two carrier frequency groups according to distribution rule so that the interference relevant to the transmitting of the base station of the carrier frequency groups association being distributed in same frequency block has minimum and be disturbed surface area.

Description

Method, equipment, system and base station for scheduling frequency channel

This invention relates generally to for narrowband radio communication system, the method of scheduling frequency channel (also referred to as carrier frequency), this narrowband radio communication system is shared radio electricity in same geographic area and is launched website and identical frequency band with broadband wireless communications electrical communication system.

The known same radio electricity that is deployed in predetermined geographic is launched and is included the first wideband radio communications system SY on websiteBBWith the second narrowband radio communication system SYNBRadio communications system SY.Therefore the operator of these websites can provide narrowband service and broadband service on same region at the same time.According to prior art, the two system operates in independent frequency band thus avoids interference.

Include multiple website referring to Fig. 1, radio communications system SY, be referred to as community C1To CC.In order to be more fully understood that Fig. 1, only specifically illustrate 4 communities, C1、C2、C3, and Cc.Each community Cc, wherein 1≤c≤C, including the first and second base stations, is BS respectivelyBB,c、BSNB,c, and movement station MS1To MSK, this movement station MS1To MSKBy at each frequency band (frequency band Δ Fsy for broadband connectionsBB, and the frequency band Δ Fsy for narrow band communicationNBThe radio resource shared in) communicates with base station.More specifically, each community includes the first base station BSBB,c(in following description, it is referred to as wide bandwidth base station BSBB,c), can be with the first radio communications system SYBBWideband radio communications network in movement station carry out radio telecommunication.Each community also includes the second base station BSNB(in following description, it is referred to as arrowband base station BSNB,c), can be with the second radio communications system SYNBNarrowband radio communication network in movement station carry out radio telecommunication.Community occurs, and the movement station worked according to single (broadband or the arrowband) in two communication patterns, according to their operator scheme, respectively to two base station BSsBB,c, or BSNB,cIn a registration.Movement station operation according to two communication pattern work by selecting a registration in two base stations, or can be registered to the two base station.

Radio communications system SY for FDD (FDD) typeBBAnd SYNB, respective predetermined frequency band Δ FsyBBWith Δ FsyNBInclude the first frequency band Δ Fsy respectivelyBBe, it is Δ Fsy respectivelyNBe, for from base station BSBB,cOr BSNB,cCommunication to movement station is launched, and also has the second frequency band Δ Fsy of same bandBBr, it is Δ Fsy respectivelyBBr(referred to as duplex band), for by base station BSBB,cOr BSNB,cReceive the communication being derived from movement station.First frequency band Δ FsyBBe, corresponding Δ FsyNbe, and the second associated frequency band Δ FsyBBr, corresponding Δ FsyNBr, differ identical duplex gap Δ FD

Wideband radio communications system SYBBE.g. based on according to IEEE 802.16 standard, particularly according to WIMAX (" the global microwave access intercommunication ") type of the atmospheric interference of 802.16m standard, or e.g. LTE (Long Term Evolution) standard, it uses each generally higher than megahertz, such as 1.25MHz, 1.4MHz, the broad frequency band Δ Fsy of 3MHz, 5MHz, 10MHz or 20MHzBBeWith Δ FsyBBr

As shown in Figure 2 A, in wideband radio communications system SYBBIn, each predetermined frequency band Δ FsyBBeWith Δ FsyBBrIt is divided into J frequency chunks, is BFe respectively1To BFeJAnd BFr1To BFrJ, each bandwidth deltaf BF, the most hundreds of KHz, such as in the case of according to the system of LTE standard, Δ BF=180kHz.Each piece of BFej, BFrj, wherein 1≤j≤J, including N number of, there is channel width Δ F=Δ FsyeCarrier frequency F being distributed continuously and regularly of/(J × N) (wherein 1≤n≤N)j,1...Fj,n,...Fj,N.Such as, in the case of LTE standard, N interval delta F equal to 12 and between two continuous subcarriers is equal to 15kHz, so Δ BF=N × F=12 × 15kHz=180kHz.

Radio resources allocation is to base station BSBB,c, for whereabouts/from least higher data throughout transmission of the movement station of operation in broadband mode.Fig. 2 B is shown in during time frame TP at frequency band Δ FsyBBeIn in downlink communication channel by wide bandwidth base station BSBBThe radio resource shared, and (not shown) is similar in uplink communication channel.The communication channel of LTE broadband system, downlink or up-link, corresponding to during time frame TP at frequency band Δ FsyBBe(or Δ FsyBBrResource collection in).Radio resource is Resource Block, is i.e. defined within frequency chunks BFe during special time window tpj(or depend on channel direction, it is BFrjEach BR on)j,tp, it is referred to as time pitch (time pitch), is made up of several symbol times in the sense that OFDM modulates.Communication channel includes common subchannel CNC, for the synchronization of system information between wide bandwidth base station and broadcast and transmission subchannel, for carrying out data exchange and signalling between the base station and the mobile terminal.Common subchannel CNC is corresponding to expanding to the Resource Block set in several frequency chunks (in the case of LTE, be six) adjoined of several symbol time, and is partly repeated in time frame TP.Method (the such as channeling of the basis such as specific factor of multiple 3 or multiple 1, or such as fractional frequency reuse) according to known Resources allocation, other Resource Block are corresponding to transmission subchannel and at radio communications system SYBBC base station BSBB,1To BSBB,CBetween shared.Referring to Fig. 2 B, in frequency planning, several frequency chunks, such as block BFejTo BFej+5, including being intended to for several Resource Block of subchannel CNC and being intended to the Resource Block for transmission subchannel.Other frequency chunks include the Resource Block being intended merely for transmission channel, referring for example to frequency chunks BFe of Fig. 2 B1

Narrowband radio communication system SYNBE.g. its channel width δ f is in the TETRA (" terrestrial trunked radio ") of the few kilohertz order of magnitude (such as 10kHz, 12.5kHz or 25kHz) or TETRAPOL system, and this width δ f is also the frequency pitch separating two carrier frequencies.Carrier frequency fe of channel width δ f is corresponded to referring to Fig. 3 A, the up-link of the narrowband systems between base station, arrowband and mobile terminal and/or downlink communication frequency channelsc,pOr frc,p(it is represented as fe/r in figure 3 ac,p).The available bandwidth δ b of filtered frequency signal is less than the width δ f of channel.Such as, for the channel width δ f of 10KHz, bandwidth δ b is by e.g. 8KHz.

Referring to Fig. 3 B, in the narrowband radio communication system of FDD type, the available distribution of frequency planning makes each community CcAllocated two groups of P carrier frequencies fe with channel width δ fc,1...fec,p,...fec,PAnd frc,1...frc,p,...frc,P, each of which is distributed on frequency band Δ FsyNBeWith Δ FsyNBrOn.For each frequency band Δ FsyNBeWith Δ FsyNBr, at same community CcIn, it is assigned to the distribution of the narrowband carrier frequency of same base station, it then follows and the particular constraints between described frequency.

(it is more specifically the coupled system using chamber, for from base station BS with conventional coupled systemNB,cTransmission information is to the mobile terminal occurred in community) use the first relevant constraint, it is desirable to comply with the first minimum frequency space Δ fe, such as Δ fe=150kHz between the carrier frequency being used in same community.

Second constraint allow to avoid and use be too close to frequency channels, simultaneously by with base station BSNB,cClose mobile terminal and away from base station BSNB,cMobile terminal transfer information to base station BSNB,c, relevant interference.This constraint requirements complys with the second minimum frequency space Δ Ifr between the described carrier frequency of same community, and such as Δ fr=20kHz, and Δ Ifr is smaller than first segment away from Δ fe.

Owing to from mobile terminal to direction, base station, the frequency channels of uplink communication corresponds to the frequency channels of the downlink communication from base station to movement station in duplex gap, in the frequency transformation of other frequency subbands corresponding with the uplink communication from mobile site to base station, minimum clearance channel between relevant to the constraint of base station is by identical.

The each community being geographically sufficiently apart from can have identical carrier frequency fec,p, frc,pOr there is the group of same carrier frequencies or the part of group.In same frequency channels these communities interfere the lowest, carrier over interference determined by each community is because becoming in other communities, less than specific threshold.

Such as these standards distribution of frequency chunks and carrier frequency, when each of which is applied to be positioned in different geographic regions and/or at different frequency band Δ FsyBB、ΔFsyNBFirst and second radio communications system SY of upper runningBBAnd SYNBTime, it is effective.According to the present invention, if communication system SYBBAnd SYNBIt is positioned in same geographic area, on the one hand shares identical transmitting and frequency acceptance band Δ FsyeWith Δ Fsyr, the distribution of carrier frequency, on the other hand and, frequency chunks, is more specifically transmission channel, produces, by producing the service quality for described communication system, interfering of negatively affecting very much.

It practice, according to typical exemplary configuration, narrowband systems SYNBCarrier frequency there is the channel width δ f of 10KHz, and same community CcTwo carrier frequencies between first frequency interval delta fe be 150KHz.By assuming that for LTE system, broadband system SYBBEach frequency chunks BFej, BFrjThere is bandwidth deltaf BF of 180KHzj, several frequency chunks, actually by community CcWide bandwidth base station BSBB,cThe all frequency chunks used potentially, can each include arrowband base station BS that is that belong to same community and that disturbed by these carrier frequenciesNB,cAt least one carrier frequency.

When the distribution of frequency chunks will be prone in being dispensed on identical given community or in the community the nearest with this given community, the carrier frequency of narrowband systems through being disturbed produces interference, this defect may be limited to given community (in other words, by neutralizing this block) by avoiding distributing frequency chunks.Therefore, if wide bandwidth base station BSBBBy being positioned at same cells or being positioned at the base station BS in the most close communityNBThe interference of carrier frequency, share the strategy of radio communications system SY, forbid frequency chunks BFe by applyingj, BFrjDistribute to wide bandwidth base station BSBB, these frequency chunks being disturbed become to use.Apply the protection that such strategy ensure that the frequency chunks of broadband system jointly.But, the quantity of the frequency chunks of neutralization, in above-mentioned configuration, can reduce the capacity of wide-band communication system very significantly.

In order to overcome this defect, it is known that in narrow-band communication system SYNBBase station, arrowband in use multiple radio frequency emitter.Such emitter will be assigned to same base station BSNB,cCarrier frequency divide in carrier frequency groups, have relatively small frequency interval delta Ife (such as, Δ fe is from 150KHz to 20KHz) between each carrier frequency is not to be distributed continuously on the frequency band extended very much.Therefore, community C it is assigned tocBase station BSNB,cCarrier frequency groups there is frequency bandwidth, be such as 140KHz in the case of 8 group of frequencies, this is less than the bandwidth (being 180KHz in previous example) of frequency chunks.Depending on the position of relative frequency block, carrier frequency groups the most only disturbs one or two frequency chunks.Other frequency chunks do not disturbed with this class frequency can be assigned to belong to community C potentiallycWide bandwidth base station BSBB,c.But, it is respectively allocated to be each located on and community CcThe carrier frequency groups of the base station, arrowband in adjacent community, can be distributed on the whole frequency band of radio system SY, and therefore disturbs several frequency chunks, is actually distributed in frequency band Δ FsyeWith Δ FsyrOn all frequency chunks, they are for community CcWide bandwidth base station BSBB,cIt is disabled for showing as.

It is an object of the invention to, by the method for the narrowband radio communication system scheduling carrier wave frequency for sharing wireless radio transmission community and same frequency band in same geographic area with wideband radio communications system, alleviate the defect of prior art, wherein this wireless radio transmission community each includes base station, arrowband and wide bandwidth base station, and this band portion ground is divided into the frequency chunks of determined number, each include by optionally distribute to base station, arrowband to the carrier frequency of determined number.The method is characterised by, it includes being assigned to the step that the carrier frequency of base station, arrowband is distributed on frequency band, thus each frequency chunks includes the carrier frequency groups that at least two is different, each it is associated in different base stations, arrowband, two groups of carrier frequencies are selected, so that there is least interference surface area to the relevant interference of launching of the base station, arrowband of carrier frequency groups being associated to be distributed in same frequency chunks according to distribution rule.The method allows to the minimum interference that the carrier frequency so that narrowband radio communication system is closed at the frequency chunks collection of wideband radio communications system, this wideband radio communications system in same geographical area with this narrowband radio Communications System Segment share same frequency band.

A characteristic according to the present invention, in distribution step, interweave with coming by each carrier frequency corresponding alternately each carrier frequency of one group organized with another in frequency chunks, be distributed the carrier frequency groups selected by least two, thus follow the minimum frequency gap between the carrier frequency of same group of carrier frequency.

Another characteristic according to the present invention, the method includes setting up frequency scheduling, by each base station, arrowband of narrowband radio communication system with according to distribution rule by by frequency chunks at least one carrier frequency groups in the array carrier frequency that is distributed on frequency band be associated.

First realization of the method according to the invention, the method includes following consecutive steps:

Associated steps, determines the first set of first group of carrier frequency, and first group of carrier frequency of each is regular according to multiplexing and base station, one or more arrowband is associated, and

Distribution step, each carrier frequency of one group in gathering first with carrying out dijection maps mutually with the carrier frequency of frequency chunks, the most on the one hand follows distribution rule and on the other hand follows and the carrier frequency dijection ground minimum frequency gap between the carrier frequency of same group of carrier frequency that maps of same frequency chunks.

One characteristic of the first realization according to this method, distribution step includes for selecting the first iteration loop of each frequency chunks of frequency band and for selecting the secondary iteration ring of each carrier frequency of selected frequency chunks, and include that the carrier frequency of the carrier frequency of frequency chunks with the first set is mapped by dijection mutually at secondary iteration ring, the minimum frequency gap between following distribution rule simultaneously and being distributed on the carrier frequency of same group of carrier frequency in same frequency chunks.

A deformation according to this characteristic, each secondary iteration ring includes, as long as another carrier frequency of first group of carrier frequency maps mutually with another carrier frequency dijection ground of frequency chunks selected during previous secondary iteration ring, then the step carrier frequency of first group of carrier frequency mapped mutually with the selected carrier frequency of selected frequency chunks to dijection.

Another characteristic of the first realization according to this method, the quantity of the carrier frequency of each first group of carrier frequency is at most equal to the half of the quantity of the carrier frequency of frequency chunks, and distribution step includes the iteration loop of each frequency chunks for selecting frequency band, this iteration loop includes being subordinated in two first group of carrier frequencies of the first set select according to distribution rule, and then dijection the optional carrier frequency of the carrier frequency of frequency chunks with in first two groups is mapped mutually, follow the minimum frequency gap between the carrier frequency of same first group of carrier frequency simultaneously.

Second realization of the method according to the invention, the method includes following consecutive steps:

It is distributed the step of the first set of first group of carrier frequency, these carrier frequencies are each associated with base station, arrowband, each first group from least one other different first group be distributed in the same virtual frequency block of the set belonging to virtual frequency block, follow the minimum frequency gap between the carrier frequency of same group simultaneously and follow distribution rule simultaneously, the set of virtual frequency block include the frequency chunks more than or equal to frequency band to the quantity of determined number, and

Associated steps, for being associated with the frequency chunks of frequency band by each virtual frequency block, follows carrier frequency multiplexing rule simultaneously.

The invention still further relates to share with wideband radio communications system the narrowband radio communication system of wireless radio transmission community and same frequency band in same geographic area, wherein this wireless radio transmission community each includes base station, arrowband and wide bandwidth base station, and this band portion ground is divided into the frequency chunks of determined number, each include optionally distributing to base station, arrowband to the carrier frequency of determined number.This system features is, the carrier frequency of the narrowband radio communication system being assigned to base station, arrowband is distributed on frequency band, thus each frequency chunks includes the carrier frequency groups that at least two is different, each it is assigned to different base stations, arrowband, two groups of carrier frequencies are selected, so that there is least interference surface area to the relevant interference of launching of the base station, arrowband of carrier frequency groups being associated to be distributed in same frequency chunks according to distribution rule.

The invention still further relates to share with wideband radio communications system the base station, arrowband of the narrowband radio communication system of wireless radio transmission community and same frequency band in same geographic area, wherein this wireless radio transmission community each includes base station, arrowband and wide bandwidth base station, and this band portion ground is divided into the frequency chunks of determined number, each include optionally distributing to base station, arrowband to the carrier frequency of determined number.This base station, arrowband is characterised by, the carrier frequency being assigned to base station is distributed on frequency band together with other carrier frequencies of distribution to other base stations, thus each frequency chunks includes the carrier frequency groups that at least two is different, each is assigned to different base stations, arrowband, these two carrier frequency groups select according to distribution rule, thus have least interference surface area to the relevant interference of launching being associated to be distributed on the base station, arrowband of the carrier frequency groups of same frequency chunks.

The invention still further relates to for the narrowband radio communication system sharing wireless radio transmission community and same frequency band in same geographic area with wideband radio communications system, the equipment of scheduling carrier wave frequency, wherein this wireless radio transmission community each includes base station, arrowband and wide bandwidth base station, and this band portion ground is divided into the frequency chunks of determined number, each include optionally distributing to base station, arrowband to the carrier frequency of determined number.This equipment is characterised by, including for carrier frequency pass is coupled to the device of base station, arrowband and is used for the device carrier frequency being associated with base station, arrowband being distributed on frequency band, so that each frequency chunks includes at least two different carrier frequencies group, the base station, arrowband that each association is different, selects these two carrier frequency groups according to distribution rule so that having least interference surface area to the relevant interference of launching of the base station, arrowband being associated to be distributed on the carrier frequency groups of same frequency chunks.

Finally, the present invention relates to the computer program that can realize in controlling equipment, described program includes instruction, when this program performs in described controlling equipment, described instruction the method according to the invention performs the scheduling of carrier frequency for the narrowband radio communication system sharing wireless radio transmission community and same frequency band in same geographic area with wideband radio communications system, wherein this wireless radio transmission community each includes base station, arrowband and wide bandwidth base station, and this band portion ground is divided into the frequency chunks of determined number, each include optionally distributing to base station, arrowband to the carrier frequency of determined number.

By non-limiting example the following description of the several embodiments reading the present invention with reference to corresponding accompanying drawing, other features and advantages of the invention will become more apparent and are clear to, in these accompanying drawings:

Fig. 1, has been noted above, it is schematically shown radio communications system;

Fig. 2 A and 2B, has been noted above, it is shown that the diagram of the conventional distribution of the frequency channels of wide-band communication system;

Fig. 3 A, has been noted above, it is shown that the diagram of the conventional distribution of the frequency channels of narrow-band communication system;

Fig. 3 B, has been noted above, it is shown that the diagram of the carrier frequency of narrow-band communication system;

Fig. 4 illustrates the diagram of the distribution of the carrier frequency of the narrowband radio communication system according to the present invention;

Fig. 5 illustrates the block diagram of the carrier frequency controlling equipment of the radio communications system realizing the frequency scheduling method according to the present invention;

Fig. 6 A, 6B and 6C each illustrate three deformation of the algorithm of the distribution carrier frequency of the first embodiment of the method according to the invention;With

Fig. 7 illustrates the algorithm of distribution carrier frequency according to the second embodiment of the method according to the invention.

Unless specifically stated otherwise, occur that each element in the drawings retains identical reference.

The radio communications system of the FDD type according to the present invention is similar with the radio communications system SY described referring to Fig. 1 before, and includes the first wideband radio communications system SY in same geographic areaBBWith the second narrowband radio communication system SYNB, they are deployed in the most overlapping corresponding predetermined frequency band Δ FsyBBWith Δ FsyNBGo up and constitute band sharing Δ Fsy, being considered as the frequency band of system SY in being described below.Radio communications system SY includes multiple community C1To Cc, wherein 1≤c≤C, including the first and second base stations, is BS respectivelyBB,c、BSNB,c, and the movement station MS communicated with base station by radio resource1To MSKShare band sharing Δ Fsy.More specifically, each community CcIncluding the first wide bandwidth base station BSBB,c, can be with the first broadcast communication system SYBBBroadband broadcast communications network in movement station carry out radio communication.Each community CcAlso include the second arrowband base station BSNB, can be with the second communication system SYNBNarrowband radio communication network in movement station carry out radio communication.

Frequency band Δ Fsy also includes the first frequency band Δ Fsye, for from base station BSBB,cOr BSNB,cTo the transmitting of the downlink communication of movement station, also there is the second frequency band Δ Fsy of same widthsr, be referred to as duplex band, for be derived from movement station by base station BSBB,cOr BSNB,cThe reception for uplink communication carried out.The two frequency band Δ FsyeWith Δ FsyrDiffer a duplexing gap Δ FD.More specifically, in downlink communication, frequency band Δ FsyeBy wideband radio communications system SYBBFrequency band Δ FsyeBBFormed, this frequency band Δ FsyeBBWholly or partly with narrowband radio communication system SYNBFrequency band Δ FsyeNBOverlapping.Similarly, in uplink communication, frequency band Δ FsyrBy wideband radio communications system SYBBFrequency band Δ FsyrBBFormed, this frequency band Δ FsyrBBWholly or partly with narrowband radio communication system SYNBFrequency band Δ FsyrNBOverlapping.Owing to the frequency scheduling method according to the present invention is at two frequency band Δ Fsye(ΔFsyeBB, Δ FsyeNB) and Δ Fsyr(ΔFsyrBB.. Δ FsyrNB) each in identical, only for the first frequency band Δ Fsy in following descriptioneTwo systems SY are describedBBAnd SYNBFrequency distribution.

As it has been described above, referring to Fig. 2 A and 2B, wideband radio communications system SYBBE.g. based on according to IEEE 802.16 standard, particularly according to WIMAX (" the global microwave access intercommunication ") type of the atmospheric interference of 802.16m standard, or e.g. LTE (Long Term Evolution) standard, it uses each generally higher than megahertz, such as 1.25MHz, 1.4MHz, the broadband Δ Fsy of 3MHz, 5MHz, 10MHz or 20MHzBBeWith Δ FsyBBr

As shown in Figure 2 A, in wideband radio communications system SYBBIn, predetermined frequency band Δ FsyBBeIt is divided into J frequency chunks BFe1To BFeJ, each bandwidth deltaf BF, the most hundreds of KHz, such as in the case of according to the system of LTE standard, Δ BF=180kHz.Each piece of BFej, wherein 1≤j≤J, including N number of, there is channel width Δ F=Δ FsyeCarrier frequency Fe being distributed continuously and regularly of/(J × N) (wherein 1≤n≤N)j,1...Fej,n,...Fej,N.Such as, in the case of LTE standard, N interval delta F equal to 12 and between two continuous subcarriers is equal to 15kHz, so Δ BF=N × F=12 × 15kHz=180kHz.

Radio resources allocation is to base station BSBB,c, for carry out whereabouts/from least in broadband mode operation movement station high data throughput transmission.Fig. 2 B is shown in during time frame TP at frequency band Δ FsyBBeIn in downlink communication channel by wide bandwidth base station BSBBThe radio resource shared, and similar with the situation of (not shown) in uplink communication channel.The communication channel of LTE broadband system, downlink (or up-link), corresponding to during time frame TP at frequency band Δ FsyBBeIn resource collection.Radio resource is to be defined on frequency chunks BFe in special time window tp (referred to as time pitch) periodjOn each Resource Block (BRj,tp).Communication channel includes common subchannel CNC, for the synchronization of system information between wide bandwidth base station and broadcast and transmission subchannel, transmits for carrying out data exchange and signal between the base station and the mobile terminal.Common subchannel is corresponding to expanding to the Resource Block collection in several frequency chunks adjoined of several symbol time, and is partly repeated in time frame TP.According to the known method for Resources allocation, other Resource Block are corresponding to transmission channel and at radio communications system SYBBC base station BSBB,1To BSBB,CBetween be shared.Referring to Fig. 2 B, in frequency planning, several frequency chunks, such as block BFejTo BFej+5, including being intended to for several Resource Block of subchannel CNC and being intended to the Resource Block for transmission channel.Other frequency chunks include the Resource Block being intended merely for transmission channel, referring for example to frequency chunks BFe of Fig. 2 B1

Narrowband radio communication system SYNBE.g. TETRA (" terrestrial trunked radio ") or TETRAPOL system, the channel width Δ f of each of which carrier frequency is thousands of conspicuous orders of magnitude.From M group carrier frequency Ge1To GeMOne or more groups carrier frequency Gem(wherein 1≤m≤M) is assigned to each community Cc, more specifically it is assigned to each base station, arrowband SBNB,c.Each group of carrier frequency GemIncluding F carrier frequency Fem,1To Fem,F.Being integrated between group and group of the carrier frequency of each group is disjunct.Same group of carrier frequency GemCommunity away from each other can be assigned to avoid any frequency interferences.

According to this configuration of communication system, the Resource Block the distributed ability of wide-band communication system being only exclusively used in transmission channel is disturbed mutually with the carrier frequency of the narrow-band communication system being dispensed in same frequency band.The carrier frequency being exclusively used in the Resource Block of common channel CNC of the frequency chunks of the wide-band communication system narrow-band communication system for being positioned in same frequency band has negative interference, and the ratio of the mean power of the useful signal of narrowband systems and the mean power of the distribution signal of the shared channel CNC of broadband system is far below the threshold value of the unwanted signals noise ratio of narrow-band communication system.

Actually, by assuming that the transmitting power of the narrowband systems of TETRAPOL type is the power of the broadband system of each carrier frequency 42dBm and LTE type is 48dBm on whole 1.080MHz channel (so-called 1.4MHz nominal channel), the only broadband power density in the emission process of shared channel CNC is about 48dBm/MHz, owing to the latter almost occupies whole transmitting bands (between 62 to 72 carrier waves of 15kHz), but it is only that (48dBm deducts the ratio between each bandwidth of 1MHz and 8kHz to 27dBm in there is the receiving filter of narrow-band communication system of 8kHz bandwidth δ b, i.e., 21dB).Additionally, the emission duration of shared channel compares whole emission durations of the channel of broadband system, the order of magnitude is the latter's time 5%, and corresponding to the dutycycle of they transmittings in time frame, the mean power of shared channel reduces close to 20 times, and the most averagely reduce 13dB, say, that in frequency band, the power of 14dBm=-27dBm-13dB is for being received distribution signal by narrow-band communication system.Ratio between arrowband useful signal and shared channel distribution signal has the meansigma methods of 28dB=42dBm-14dBm, i.e. be significantly less than the threshold value (being 15dB in that case) of the unwanted signals noise ratio of narrowband systems.Whereas if the Resource Block being exclusively used in transmission channel being included in Resource Block is permanently assigned to wide bandwidth base station BSBBCommunication, owing to the decay that causes of dutycycle of transmission will not work, the signal noise ratio for same propagation condition will only be 15dB=42dBm-27dBm, and this also is insufficient to avoid interference.

Frequency scheduling method according to the present invention is implemented in controlling equipment DP, the most respectively by base station, arrowband SBNB,1To SBNB,CIt is installed and configured community C1To CCIn.Carrier frequency controlling equipment DP hereafter be will be described with reference to fig. 5.Equipment DP is by for being dispensed on base station, arrowband and the carrier frequency groups that is distributed in frequency band Δ Fsye sets up frequency scheduling PF, thus minimizes the interference between two communication systems, disturbs because becoming in the following three distribution rule characterizing this method.

According to the first distribution rule RR1, controlling equipment DP is by one group of carrier frequency GemSet be completely or partially distributed in frequency chunks BFejIn, this group of carrier frequency GemFollowing following second distribution rule RR2, described frequency chunks is considered disturbed.

According to the second distribution rule RR2, in order to avoid being assigned to same group of carrier frequency Ge of one or more communitymBetween interference, according to the rule by carrier frequency distribution prior art in narrow-band communication system, belonging to identical group of GemContinuous carrier frequency each between must comply with minimum frequency gap Δ fe, and must be distributed in same class frequency block.

According to the 3rd distribution rule RR3, the most disturbed frequency chunks BFej(i.e., some frequency of frequency chunks is not also associated with the community of system), can be added one or more carrier frequency groups, these one or more carrier frequency groups are selected so that the geographic area disturbed by the transmitting of the base station associated with the carrier frequency groups being distributed in same frequency block has least interference surface area.

By applying above-mentioned rule in dispatching method, equipment DP mono-aspect according to the first distribution rule RR1 in same frequency chunks BFejMiddle scheduling composition is assigned to community CcGroup of frequencies Ge of at least one base station, arrowbandmCarrier frequency, described frequency is distributed in block the constraint simultaneously following the minimum frequency gap according to the second distribution rule RR2, and on the other hand, comes at this same frequency block BFe according to the 3rd distribution rule RR3jMiddle will be assigned to be different from community C by compositioncBut the carrier frequency being substantial access to other carrier frequency groups one or more of the base station, arrowband of its community is grouped together.As a result, this frequency chunks BFejCompletely belong to community C by will be assigned tocAnd belong to adjacent to CcThe carrier frequency of base station, arrowband of community disturbed, and other frequency chunks of the frequency band of radio communications system are not disturbed by these carrier frequencies and then Neng You community CcWide bandwidth base station used.Do not having or the most slightly by community CcThe frequency chunks disturbed of frequency in, be geographically distant from community CcThe carrier frequency of base station, arrowband of community also can be at not interfered cell CcWide bandwidth base station broadband connections in the case of be distributed.

Once establish frequency scheduling PF, this by each base station, arrowband of narrowband radio communication system with according to above-mentioned rule by by frequency chunks at least one carrier frequency groups in several carrier frequency groups of being distributed on frequency band be associated, this equipment DP is by the operator of scheduling PF transmission to radio communications system, thus the carrier frequency of frequency band is distributed to each base station, arrowband as scheduled in frequency scheduling PF by he.

Fig. 4 illustrates according to distribution rule RR1, RR2 and RR3 in frequency chunks BFejMiddle distribution is assigned to the first community CcEight carrier frequencies fe of the first base station, arrowbandm,1To fem,8First group of GemIt is assigned to and the first community C with distributioncThe second adjacent community Cc+1Eight carrier frequencies fe of the second base station, arrowbandm+1,1To fem+1,8Second group of Gem+1Example.The two base station belongs to narrow-band communication system SY of TETRAPOL typeNB, the minimum frequency gap Δ fe that each of which frequency has between the bandwidth δ b of channel width δ f, 8KHz of 10KHz and each frequency of same group is 20KHz.With narrow-band communication system SYNBWide-band communication system SY being positioned in same frequency bandBBIt is LTE type, and there is the spectrum width Δ Fsye of 1.4MhzBBWith frequency chunks width Delta BF equal to 180KHzj.As shown in Figure 4, the carrier frequency by the carrier frequency of first group is alternately inserted second group interweaves two carrier frequency groups GemAnd Gem+1, thus follow the minimum frequency gap Δ fe=20KHz according to the second distribution rule RR2.In the diagram, according to frequency chunks BFe of the LTE system of full width 180KHzjCorresponding to having the merging of 18 carrier frequencies of the narrowband systems that channel width δ f is 10kHz, it is represented as Fej,0To Fej,17.It is assigned to the first community CcFirst group of GemIncluding being represented as Fej,1To Fe1j,15Odd carriers, and be assigned to the second community Cc+1Second group of Gem+1Including being represented as Fej,2To Fej,16Even carriers.In frequency chunks, the packet of each carrier frequency groups meets the frequency constraint equal to 20KHz of the minimum frequency gap Δ fe between two cline frequencies belonging to same group.Latter two carrier frequency can be assigned to other communities of radio communications system SY, follows distribution rule RR1, RR2 and RR3 simultaneously.

It should be noted that, the base station to narrowband systems is distributed if necessary by the carrier frequency more than eight, there are two groups of eight carrier frequencies realizing this measure of two different frequency blocks (adjoin or do not adjoin) may be belonged to by distribution dividually, above-mentioned situation does not has assigned carrier Fej,0And Fej,17Ensure that and no matter be in what situation discussed, belonging to the constraint that have followed minimum frequency gap between the carrier wave of two groups of different frequency block all the time.

Referring to Fig. 5, frequency scheduling method realizes in controlling equipment DP, this equipment includes the associative cell UA for carrier frequency groups being associated with the community of system SY according to multiplexing rule RU, according to algorithm AG and distribution rule RR1, RR2, distribution unit UR carrier frequency groups being distributed in frequency chunks with RR3, with memorizer ME, specifically include the frequency scheduling PF of the base station for carrier frequency groups being assigned to narrowband radio communication system (being distributed based on the frequency chunks of wideband radio communications system), this scheduling PF is the result of the dispatching method according to the present invention.Unit UA, UR and ME of equipment DP are illustrated by the form with functional block, and wherein great majority guarantee have function related to the present invention and may correspond to the software module with the realization of at least one processor and/or corresponding to special and/or programmable hardware module.

Memory element ME may also include the frequency band Δ Fsy being related to radio communications systemBBWith Δ FsyNB, each carrier frequency groups and quantity F of the carrier frequency of each community, the value Δ fe of minimum frequency gap will be associated to, be distributed on the frequency band Δ Fsy of broadband systemBBIn quantity J of frequency chunks and the information of quantity N of carrier frequency of each frequency chunks.

This equipment may also include communication interface, and for frequency scheduling PF being transmitted to radio communications system SY, thus the operator of this system realize the frequency distribution of each community according to scheduling PF.

Controlling equipment can be for example the server being connected to radio communications system SY via packet network.

Distribution unit UR includes such as controlling one or more processors of the execution considering Distribution Algorithm AG of distribution rule RR1, RR2 and RR3.

Associative cell UA such as includes controlling one or more processors of the execution considering the association algorithm of channeling rule RU.

Memorizer ME is the record medium that wherein can preserve program.Memorizer ME is connected to unit UR and UA via bidirectional bus BU and includes volatibility and/or nonvolatile memory, such as EEPROM, ROM, PROM, RAM, DRAM, SRAM memory etc..The algorithm realizing dispatching method is stored in memorizer ME.

Be described in detail below realize according to several embodiments of the present invention for scheduling by the method for the carrier frequency of the base station, arrowband that is assigned to radio communications system SY.Each embodiment includes two key steps: by step EA of the community that carrier frequency groups is closed the system that is coupled to performed by the associative cell UA of equipment DP with by step ER carrier frequency groups being distributed in frequency chunks performed by the distribution unit UR of equipment DP.According to first embodiment, perform these steps with first order of EA then ER.According to second embodiment, perform these steps with the reverse sequence of ER then EA.

Step EA that carrier frequency groups is closed the base station, arrowband being coupled to system is same carrier frequency groups is closed the base station, arrowband being coupled to radio communications system SY, meeting for known to those skilled in the art and be applied to multiplexing rule RU of narrowband radio communication system, the base station, all arrowbands of system must be associated with at least one carrier frequency groups simultaneously.

By applying distribution rule RR1, RR2 and RR3 according to the present invention, step ER of carrier frequency distribution to frequency chunks is more specifically in same frequency block the carrier frequency groups that distribution is associated with base station, arrowband, and the area that this base station, arrowband is disturbed by the transmitting of the base station, described arrowband associated with the carrier frequency groups being distributed in same frequency chunks is minimum.

The method also includes, after two steps EA and ER perform, set up frequency scheduling, by each base station, arrowband of narrowband radio communication system with according to distribution rule by by frequency chunks at least one carrier frequency groups in the array carrier frequency that is distributed on frequency band be associated.

First embodiment according to this dispatching method, in associated steps EA, the associative cell UA of controlling equipment DP determines the first class frequency A of the one or more communities being associated to radio communications system SY according to channeling rule RU1To AM(each group of Am, 1≤m≤M) first set A.For each first class frequency Am, assigned F frequency fam,1To fam,FSet, follow group of frequencies A simultaneouslymEach frequency fam,fBetween minimum frequency gap Δ fe.It is disjunct from a first frequency group to another first frequency group, each frequency sets.The most several first frequency groups are assigned to community CcIn the case of, the frequency sets of the entirety corresponding to these frequency sets of first group of composition is followed minimum frequency gap Δ fe and is assigned to community.Multiplexing rule RU is one or more first class frequencys in M the first class frequency are closed each community C being coupled to radio communications system SYc, the first identical class frequency may be associated to several different districts, and these several communities are geographically distant from and reach each other to fixed gap to avoid the frequency interferences between these communities.These multiplexings constraint only relates to cochannel interference.

In distribution step ER, each carrier frequency of one in those first group in set is mapped mutually by the distribution unit UR dijection ground of equipment DP with the carrier frequency of frequency chunks, the most on the one hand follows distribution rule and on the other hand follows and the carrier frequency dijection ground minimum frequency gap between the carrier frequency of same group of carrier frequency that maps of same frequency chunks.More specifically, the distribution unit UR of equipment DP determines carrier frequency Ge1To GeMThe second set Ge of M second group, carrier frequency Ge of each groupmEspecially preferably it is distributed to frequency chunks BFejIn, follow the minimum frequency gap being included between the carrier frequency of same second group in same frequency chunks simultaneously.According to first embodiment, distribution step also includes that the frequency of the frequency of each group by the first set A and each group of the second set Ge carries out bijective map, hence in so that, according to the mode the same with each frequency association of the M group of set A the frequency of M group and the community of system SY of set Ge may be associated according to associated steps EA by considering multiplexing rule RU and distribution rule RR1, RR2 and RR3.More accurately, the second set Ge, Ge of the second class frequency is determined1.., GeM(1≤m≤M), so that the first set A [A1∪...∪AM] and the second set Ge [Ge1∪...∪GeM] it is dijection.By the first set A [A1∪...∪AM] frequency with second set Ge [Ge1∪...∪GeM] the bijective map of dijection of frequencyTherefore it is determined, meets multiplexing rule RU and scheduling rule RR1, RR2 and RR3 simultaneously:

According to the first embodiment of the present invention, the macrocell M of narrowband network1,..MMIt is defined such that and includes and the first class frequency AmAll communities of the base station, arrowband being associated constitute macrocell Mm, then each macrocell MmIncluding its each class frequency AmThe all communities being associated.Each narrow band emitter of each macrocell maintains inherits all characteristics of coming from respective cell, particularly antenna system (specific be) radiation diagram and launch the characteristic of power.

Fig. 6 A, 6B are particularly shown specifically step ER carrying out distribution frequency according to three different iterative algorithm AG1, AG2 and AG3, the most main iteration B1 with 6C1Corresponding to frequency band Δ FsyBBThe process each time of new different frequency block.Use the iteration each time in these algorithms, i.e. use by each the new frequency chunks selected by the distribution unit UR of the equipment DP according to the present invention, perform the set carrier frequency of A and be considered as frequency chunks through being subject to processing the newly selected frequency chunks frequency between bijective map, the carrier frequency of the frequency chunks through being subject to processing belongs to the second set Ge.Its all frequencies with the carrier frequency dijection of set A the frequency chunks that maps be considered through processing.

According to distribution step ER of the first algorithm AG=AG1, referring to the step including S100 to S108 of Fig. 6 A.Algorithm AG1 includes the first iteration loop B11So that each frequency chunks of frequency band Δ FsyBB and algorithm AG1 may be selected to include being included in the first iteration loop B11In secondary iteration ring B21, for from frequency chunks BFejMiddle selection, each carrier frequency fgm,f=Fej,n, by frequency fa with set Am,f(1≤f≤F) bijective map, follows distribution rule RR1, RR2 and RR3 simultaneously.

In the step s 100, equipment DP definition the 3rd set Y, including the most not processed carrier frequency of set A, i.e. also do not have and frequency Fe of set Gej,nThe carrier frequency of bijective map.Set Y is stored in the memorizer ME of equipment DP and initially equal to set A.

In step S101, unit UR performs the first iteration loop B11And checking frequency band Δ FsyBBWhether include at least one idle (i.e., not also being processed) frequency chunks.If all frequency chunks are processed, it is idle for not having frequency chunks, then distribution method stops in step S102.In step s 102, if still there being the carrier frequency of set A not to be distributed on frequency band Δ Fsy, they are relative to the frequency band Δ Fsy of broadband systemBBIt is unnecessary, and therefore must be distributed on outside this frequency band.This measure can be realized according to any method well known by persons skilled in the art.In that case, wideband radio communications system SYBBFrequency band Δ FsyBBNarrowband radio communication system SY that only crossover is biggerNBFrequency band Δ FsyNBA part.

In step S101, if still having the frequency chunks of some free time, then unit UR in frequency band, in a continuous manner (by being incremented by and block BFejThe variable that is associated of each index j) or in a random basis, select one of them.

In step s 103, this equipment DP definition be initially empty the 4th set X, including with frequency chunks BFejCarrier frequency Fej,nThe carrier frequency of the set A that dijection ground maps.Along with selecting new frequency chunks every time, set X is initialized to empty set.Set X is stored in memorizer ME.

In step S104, unit UR performs secondary iteration ring B21, verify frequency chunks BFejAll carrier frequencies the most processed.If block BFejFrequency be not the most processed, unit UR, in a continuous manner (by be incremented by with frequency Fej,nThe variable that is associated of each index n) or in a random basis, select one of them Fej,n.If frequency chunks BFejAll N number of frequency Fej,1To Fej,NIt is chosen, secondary iteration ring B21Stop and the first iteration loop B11Step S105 is iterated again thus in step S104, selects new frequency chunks.

Selecting frequency chunks BFejIn new carrier frequency Fej,nDuring, in step s 106, unit UR selects carrier frequency fa in set Ym,f, this carrier frequency fam,fFollow two the distribution occasion CD1 relating to distribution rule RR1, RR2 and RR3 simultaneously1And CD21

According to first condition CD11, relate more particularly to rule RR1 and RR3, it is necessary to select carrier frequency fam,fSo that with frequency fam,f(frequency chunks BFe i.e., it has been distributed on the frequency of set XjIn frequency) frequency interferences that the macrocell that is associated is launched, be disturbed surface area SImin corresponding to minimum.Unit UR, by determining for frequency propagation forecast step well known by persons skilled in the art be disturbed surface area for each frequency of set Y, and selects to be disturbed surface area with minimum and is associated and also follows condition C D21Frequency fam,f.Condition C D11Allow to reduce the selection of selected frequency in set Y.It is relevant to condition C D11, the following is can be selected:

On the one hand, block BFe has been distributed on for its carrier wavejIn the first community for, be also assigned with the frequency being assigned to this first community, impliedly have followed the first distribution rule RR1, and

On the other hand, by following the 3rd distribution rule RR3 being disturbed surface area according to minimum, frequency is assigned to the community close to the first community.

According to second condition CD21, relate more particularly to the second distribution rule RR2, it is necessary to select frequency fa by this waym,fSo that being distributed to frequency chunks BFe for belonging tojIn frequency set X and (with frequency fam,fFor any frequency F α of the same community being associated in together) macrocell, dijection ground is corresponding to frequency chunks BFe of each frequency F αjEach frequencyFollow relative to frequency Fej,nMinimum frequency gap Δ fe constraint and according to distribution rule RR2.This condition C D21Allow to verify and belong to same class frequency and the carrier frequency the most spaced apart minimum frequency gap Δ fe that is distributed in same frequency chunks thus avoid any frequency interferences between the frequency being associated with same community.

In step s 107, unit UR is by frequency fam,fWith frequency Fej,nBijective map:Frequency fam,fBelong to the first set A of carrier frequency, and frequency Fej,nBelong to the second set Ge.This mapping is stored in the memorizer ME of equipment DP.Update set X and Y so that frequency fam,fIt is included in set X (X=X ∪ { fam,f) in and be excluded set Y (Y=Y-{fam,f) outward.In step S107 end, in step S108, unit UR repeats the second ring B21, its loopback step S104, thus select frequency chunks BFejNew carrier frequency.

The most all of frequency chunks the most processed and set A all carrier waves be distributed in the frequency band Δ Fsy of system SY, equipment DP sets up frequency scheduling PF, this scheduling according to multiplexing rule RU by each community C of system SYcBeing associated with one or more group of frequencies of set Ge, these group of frequencies are distributed by frequency chunks according to distribution rule RR1, RR2 and RR3.

Frequency scheduling PF is sent to radio communications system SY by equipment DP, and frequency component scheduled in frequency scheduling PF is assigned to each base station, arrowband by this system SY.

Algorithm AG1 provides the optimization definition of frequency scheduling, minimizes the quantity of the frequency chunks disturbed by the group of frequencies of the base station, arrowband of the neighbor cell being assigned to radio communications system SY, follows the constraint of frequency interval between the carrier frequency of narrowband systems simultaneously.But, in order to meet condition C D1 of step S1061, it requires at each secondary iteration ring B21Place for set Y each carrier frequency be disturbed redefining of surface area.

Algorithm AG2, referring to Fig. 6 B, is redefined the number of times being disturbed surface area of each frequency of set Y, decreases the complexity of algorithm AG1 in the way of the most right by minimizing.If it practice, during step S106, set X has contained group A belonging to set AmFrequency F α, if frequencyAnd Fej,nFollow the constraint of minimum interval Δ fe, and if group AmCarrier frequency (such as frequency fam,f) be not the most processed, then this frequency fam,fSubstantially meet very much the first condition CD1 of step S1061, because of by the transmitting of frequency of set X with include frequency fam,fThe transmitting of frequency of set X to be disturbed area be constructively identical.

According to distribution step ER of the second algorithm AG=AG2, referring to Fig. 6 B, including the step of S200 to S210.By comparing with algorithm AG1, algorithm AG2 also includes the first iteration loop B11With secondary iteration ring B21.Select frequency chunks BFejStep (S202, S203 and S205) be similar to the step (being S102, S103 and S105 respectively) of algorithm AG1, similarly, select frequency chunks BFejCarrier frequency Fej,nStep (S204 and S208) be similar to the step (being S104 and S108 respectively) of algorithm AG1 and do not describe.

In step s 200, distribution unit UR defines the 4th set Z being initially empty, it is intended to be belonging to stand the carrier frequency of the group of frequencies of process for including gathering the most not processed of A, i.e. include and frequency chunks BFejFrequency map at least one dijection frequency.

Frequency chunks BFe is selected in step S204jFrequency Fej,nAfterwards, in step S209, whether distribution unit UR checking set Z includes frequency fa following third condition CD3m,f.According to this condition C D3, it is necessary to select carrier frequency fam,fSo that being distributed on frequency chunks BFe for belonging tojFrequency set X and (with frequency fam,fBelong to together) any frequency F α of same group of frequencies, frequency chunks BFe of corresponding each frequency F α in dijection groundjEach frequencyRelative frequency Fej,n, according to distribution rule RR2, it then follows the constraint of minimum frequency gap Δ fe.In step S210, update set Z so that frequency fam,fIt is excluded outside set Z.Then, step S207 of step S107 during unit UR performs similarly to the first algorithm AG1.

If in step S209, set Z does not comprise any frequency fa following condition C D3m,f, by increasing the renewal of set Z, unit UR performs similarly to the step 206 of step S106 of the first algorithm AG1.In step S206, unit UR selects to follow condition C D11And CD21And belong to not processed group of frequencies AmFrequency fam , f.In step S206 end, unit UR updates set Z so that set Z also includes group of frequencies AmAll not processed frequency, i.e. eliminate frequency fam fGroup AmAll frequencies.Then, distribution unit performs step S207.

The most processed and set A all carrier frequencies of the most all frequency chunks have been distributed on the frequency band Δ Fsy of system SY, and equipment DP sets up frequency scheduling PF and transmits it to radio communications system SY.

According to the 3rd deformation, wherein narrowband radio communication system be there is the channel width of 10kHz and intercarrier spacing, there is the group (they can comprise nine frequencies but have this situation hardly in practice) of F=8 carrier frequency and there is the TETRAPOL system of minimum frequency gap Δ fer equal to 20kHz in the case of, algorithm AG3 is greatly simplified.In that case, the quantity of the carrier frequency of each carrier frequency groups, F=8, at most it is equal to the half of the quantity (N=18) of the carrier frequency of frequency chunks.

If two iteration B11After, distribution unit selects two carrier waves, and due to constraint Δ fe, the two carrier frequency belongs to different carrier frequencies group, the most in a subsequent step, will alternately select these all carrier frequencies organized.

According to Fig. 4, it is contemplated that the limit of the test of step S204 is integrally fixed at 16 carrier frequencies rather than the maximum of 18 carrier frequencies, this algorithm equal to have selected group of frequencies to thus they frequency dijections with frequency chunks are mapped.

According to distribution step ER of third algorithm AG=AG3, referring to the step including S300 to S307 of Fig. 6 C.By comparing with algorithm AG1 and AG2, algorithm AG3 does not include any secondary iteration ring B21With set X, Y and Z.

In step S300, distribution unit UR definition the 5th set W, including by the group of F=8 the frequency of the set A handled by unit UR.Set W is initially equal to gathering A and being stored in memorizer ME.

In step S301, this unit is by checking frequency band Δ FsyBBWhether include that at least one idle frequence block is to perform iteration loop B11, in algorithm AG1 with AG2, step S101 of difference is the same with in S201.The most processed if all of frequency chunks, in step s 302, this distribution method stops, and step S302 is similar to step S102 and the S202 of the difference of algorithm AG1 and AG2.

In step S301, if there is also some idle frequence blocks in frequency band, unit UR selects one of them and performs step S306.Within step 306, unit UR selects two class frequencys Ak and Ap, its Exponential k ≠ p, 1≤k≤M and 1≤p≤M, each includes F=8 carrier frequency fak,0,...,fak,F-1And fap,0,...,fap,F-1, belong to gather W and follow fourth condition CD4.

According to condition C D4, relating more particularly to rule RR1 and RR3, selection group Ak and Ap, so that the frequency interferences launched by the macrocell of its carrier frequency groups Ak and Ap the most associated (in step EA), are disturbed surface area SImin corresponding to minimum.Unit UR, by determining for frequency propagation forecast step well known by persons skilled in the art be disturbed surface area for each frequency of set Y, and select with minimum be disturbed group of frequencies that surface area is associated to (Ak, Ap)。

In step S306 end, unit UR performs step S307 and by first frequency group AkEach frequency fak,fWith frequency chunks BFejFrequency Fe of even number indexn,2fDijection ground maps:And by second frequency group ApEach frequency fap,fWith frequency chunks BFejOdd number index Fen,2f+1Frequency dijection ground map:Wherein 0≤f≤F-1, and frequency chunks BFejIncluding frequency Fej,0To Fej,17.These map in the memorizer ME being stored in equipment DP.Update set W so that group of frequencies AkAnd ApIt is excluded at the outer (W=W-{A of set Wk, Ap}).In step S307 end, in step S308, unit UR repeats ring B11, step S308 loopback step S301, thus select new frequency chunks.

The most processed and set A all carrier frequencies of the most all frequency chunks have been distributed on the frequency band Δ Fsy of system SY, and equipment DP sets up frequency scheduling PF.

This algorithm slightly owes excellent, because only 16 carrier frequencies are distributed in 18 available carrier wave frequencies of frequency chunks.But this algorithm simply and quickly performs.

As deformation, it is noted that perform algorithm overall process in only select each carrier frequency groups once, and fourth condition CD4 can be replaced by condition C D5 (by with group of frequencies AkAnd ApThe crossing of surface that the frequency interferences that associated macrocell is launched is disturbed is maximum), thus algorithm AG3 can be simplified again.

According to the last simplification deformation of algorithm AG3, interference metric well known by persons skilled in the art can be used for each macrocell Mm.By considering that the row of the interference matrix of macrocell includes group of frequencies Ak, i.e. by comprising this group AkThe percentage ratio of each community that disturbed of macrocell, and consider that the corresponding line of the interference matrix of macrocell includes group of frequencies Ap, the scalar product of corresponding line vector provides the good approximation of the crossover degree on surface disturbed by the two set of cells, and the good approximation of therefore character that they intersect.In algorithm AG, then condition C D4 is substituted by following condition: corresponding to comprising group of frequencies AkAnd ApThe scalar product of row of interference matrix of macrocell of carrier frequency maximum.

When for each community C of system SYcEstablishing when preferentially the associating of carrier frequency of narrowband systems, these various algorithm AG1, AG2 and AG3 allow to realize the first embodiment of the method according to the invention.

The second embodiment according to dispatching method, controlling equipment DP definition the first set B, this first set B have C carrier frequency groups B of C the community being each associated with radio communications system SY1To BC, and each group of carrier frequency including being referred to as difference " virtual " frequency.Virtual carrier frequency may correspond to such as will be associated to the title of the frequency of the carrier frequency of the frequency band Δ Fsye of radio communications system SY subsequently.In group, the quantity of virtual carrier frequency can be different from each other between group and group.Each group of BcIt is not attached to another group in set B.This equipment also defines dummy block set, including an infinite number of frequency chunks, is referred to as virtual frequency block, BFv1..., BFvh..., BFv, some of them will be distributed in virtual carrier frequency in step ER.Each virtual frequency block BFvhIncluding N number of carrier frequency Fv1,hTo FvN,h.Virtual frequency block may correspond to such as be associated in step EA wideband radio communications system SYBBFrequency band Δ FsyeBBActual frequency block BFe1To BFeJThe title of frequency chunks.

Perform step EP referring to Fig. 7, the distribution unit UR of controlling equipment, because becoming in distribution rule RR1, RR2 and RR3, the virtual frequency of set B is distributed in virtual frequency block.Then, the associative cell UA of equipment DP performs step EA, and because becoming in channeling rule RU, the virtual frequency block virtual frequency wherein gathering B being distributed closes and is coupled to J actual frequency block.

Step S400 to S405 is included, including for selecting virtual frequency block BFv by the algorithm AG=AG4 of the second realization performed by distribution unit URhThe first iteration loop B12Be used for selecting this virtual frequency block BFvhCarrier frequency Fvn,hSecondary iteration ring B22

Initially, in step S400, this device definition first is gathered the collection merging of B and virtual frequency block and is stored it in memorizer ME.This equipment also definition set Y, including the most not processed virtual carrier frequency of set B, i.e. the virtual carrier frequency not mapped with also having the frequency dijection with virtual frequency block.Set Y is stored in the memorizer ME of equipment DP and initially equal to set B.

In step S401, distribution unit UR, by selecting virtual frequency block BFvhAnd be initially empty by definition set X (be intended to for include gathering B with selected frequency chunks BFvhCarrier frequency Fvn,hThe virtual carrier frequency that dijection ground maps), perform the first iteration loop B12.Along with selecting new frequency chunks every time, set X is initialized to empty set.Set X is stored in memorizer ME.

Then, in step S402, unit UR performs secondary iteration ring B22, verify virtual frequency block BFvhAll carrier frequencies the most processed.If virtual frequency block BFvhSome frequencies be not the most processed, unit UR, in a continuous manner (by be incremented by with frequency Fvj,nThe variable that is associated of each index n) or in a random basis, select one of them Fvj,n.If virtual frequency block BFvhAll N number of frequency Fvh,1To Fvh,NIt is chosen, secondary iteration ring B22Stop and the first iteration loop B12Step S401 is iterated again thus selects new frequency chunks.

At virtual frequency block BFvhCarrier frequency Fv that middle selection is newn,hDuring, in step S402, unit UR verifies whether there is also virtual carrier frequency in set Y in step S403.If all frequencies gathered in B are processed in step S403, i.e. set Y is empty, then distribution unit UR termination execution algorithm AG=AG4 and associative cell UA perform associated steps EA that will be then described.

If in step S403, there is also virtual carrier frequency in set Y, unit UR selects carrier frequency fb in step s 404 in set Yc,f, this carrier frequency fbc,fFollow two distribution occasion CD1 of distribution rule RR1, RR2 and RR3 of relating to the present invention2And CD22

According to first condition CD11, relate more particularly to rule RR1 and RR3, it is necessary to select carrier frequency fbc,fSo that with frequency fbc,f(virtual frequency block BFv i.e., it has been distributed on the frequency of set XhIn frequency) frequency interferences that the set of cells that is associated is launched, be disturbed surface area SImin corresponding to minimum.Unit UR, by determining, for each the virtual carrier frequency gathering Y, the surface area being disturbed for frequency propagation forecast step well known by persons skilled in the art, and selects be disturbed that surface area is associated with minimum and also follow second condition CD22Frequency fbq,f

According to second condition CD22, relate more particularly to the second distribution rule RR2, it is necessary to select frequency fb by this wayq,fSo that being distributed to virtual frequency block BFv for belonging tohFrequency set X and (with frequency fbq,fFor being associated in together) any frequency F α of same community, dijection ground is corresponding to frequency chunks BFv of each frequency F αhEach frequencyFollow relative to frequency Fvn,hMinimum frequency gap Δ fe constraint and according to distribution rule RR2.This condition C D22Allow to checking and belong to same class frequency group BcAnd whether the virtual carrier frequency being distributed in same frequency chunks is spaced minimum frequency gap Δ fe thus avoids any frequency interferences between the frequency being associated with same community.

In step S405, unit UR is by frequency fb selected from set Yq,fWith frequency Fvn,hDijection ground maps:Frequency fbq,fBelong to the first set B of virtual carrier frequency, and frequency Fvn,hBelong to dummy block BFvh.This mapping is stored in the memorizer ME of equipment DP.Update set X and Y so that frequency fbq,fIt is included in set X (X=X ∪ { fbq,f) in and be excluded set Y (Y=Y-{fbq,f)) outward.In step S405 end, unit UR repeats the second ring B22, its loopback step S401, thus select frequency chunks BFvhNew carrier frequency.

The all carrier frequencies once gathering B have been distributed in virtual frequency block, equipment Dp performs associated steps EA thus is associated with the actual frequency block of the frequency band Δ Fsy of system SY by the virtual frequency block of virtual carrier frequency that wherein distributed set B, considers narrowband radio communication system given frequency resource limit and multiplexing rule RU simultaneously.Some virtual frequency blocks can be associated in the same actual frequency block of frequency band.In step EA end, because becoming in the distribution of carrier frequency in each actual frequency block of frequency band and these carrier frequencies, each determines frequency scheduling PF with the associating of one or more communities of communication system SY.

The simplification deformation of algorithm AG4, referred to as algorithm AG5, it is similar to the algorithm AG3 of the first realization, for searching community to so that the surface disturbed with the transmitting of the selected community carrier frequency to being associated is minimum.

Then, associated steps EA is to use technology well known by persons skilled in the art to generate the frequency planning PF of true carrier frequency by being associated with virtual frequency block by actual frequency block.Each virtual frequency block is considered one group and is associated and actual frequency block by virtual frequency block for narrowband systems applying routine dispactching and channeling rule RU by equipment PF.

Optionally apply third step (not shown in Fig. 7), it is considered to the only order of the frequency in definition dummy block in the range of the constraint of the minimum interval met between two carrier frequencies being associated with same community.After having been set up frequency scheduling, i.e. after actual frequency associates with virtual frequency block, this equipment replaces the frequency in this block under the constraints of minimum clearance constraint is still followed in performed displacement.

Specifically, in the case of algorithm AG5, this displacement is equivalent to convert community CiAnd CjRole and search for the two displacement in which causes lowest interference size.

Once terminating the distribution of narrowband systems frequency, can perform the scheduling of width system, the frequency chunks being used in the community of broadband system is not disturbed by the carrier wave of narrowband systems and the frequency of carrier wave without interference with narrowband systems.The method according to the invention, in the case of the carrier wave not disturbing narrowband systems, it is ensured that the quantity of usable frequency block optimal or close to optimal quantity.

Foregoing description is only to describe the present invention by way of example and those skilled in the art can define the deformation of these embodiments in the framework of the present invention.

Described herein the present invention relates to method, include narrowband radio communication system and at least one base station of the radio communications system of wideband radio communications system, controlling equipment and this narrowband radio communication system of being partly or wholly co-located on same frequency band.According to an embodiment, the step of the method for the present invention is determined by the instruction of the computer program being incorporated in in controlling equipment DP.This computer program that can realize in controlling equipment includes programmed instruction, and when described program performs in a device, its operation is controlled by the execution of program, and the method according to the invention realizes the distribution of the carrier frequency of base station, arrowband.

Therefore, the invention still further relates to computer program, especially relate to be recorded in computer-readable record medium and be adapted for carrying out in any data handling equipment of the present invention or in computer program.This program can use any programming language, and can be source code form, intermediate code form between object identification code form or source code and object identification code, such as partial compilation form or for realizing any other desired form of the method for the present invention.This program can be downloaded in equipment via the communication network of such as the Internet etc.

Record medium can be to store any entity of program or any equipment.Such as, this medium may be included on it record storage medium according to the computer program of the present invention, such as ROM, such as, and CRROM or microcircuit ROM or usb key or magnetic recording medium, such as hard disk.

Claims (12)

1. one kind for in same geographic area with wideband radio communications system (SYBB) on the one hand share Wireless radio transmission community (C1, CC) and on the other hand share the narrowband radio communication system of same frequency band (△ Fsy) (SYNB) method of scheduling carrier wave frequency, wherein said wireless radio transmission community (C1, CC) each include base station, arrowband And wide bandwidth base station, and described frequency band is partly divided into the frequency chunks (BFe of determined number1..., BFej..., BFeJ) For being assigned to described wide bandwidth base station, described frequency chunks include by optionally distribute to base station, described arrowband to determined number (F) carrier frequency (Fe1,j..., Fen,j..., FeN,j), base station, each arrowband from belong to some different carrier frequencies At least one carrier frequency groups of the set of group is associated, and described method feature is, it includes and described arrowband base The distribution (ER) being integrated on described frequency band of the carrier frequency groups that station is associated, described distribution includes for each Frequency chunks:
Selection (S106, S404) at least two carrier frequency groups, described at least two carrier frequency groups phase Being associated with different base stations, arrowband, described selection is performed to follow distribution rule (RR3) so that with two The interference that the transmitting of the base station, described arrowband that selected carrier frequency groups is associated is correlated with has minimum and is disturbed table Area (SImin);And
The carrier frequency that the carrier frequency of described frequency chunks is mapped to two selected groups follows same group simultaneously Minimum frequency gap (Δ fe) between the carrier frequency of carrier frequency.
2. the method for claim 1, according to described method, in described distribution (ER), by handing over Each carrier frequency corresponding alternately each carrier frequency of one group organized with another interweaves with coming in frequency chunks (BFejDistribution carrier frequency groups selected by least two in), thus follow same group of carrier frequency carrier frequency it Between minimum frequency gap (Δ fe).
3. method as claimed in claim 1 or 2, including setting up frequency scheduling (PF), described frequency scheduling By each base station, arrowband of described narrowband radio communication system with according to distribution rule (RR3) by by frequency chunks ground The least one set carrier frequency being distributed in the array carrier frequency on described frequency band is associated.
4. the method for claim 1, according to described method, described narrowband radio communication system (SYNB) With described wideband radio communications system (SYBB) be share same frequency band (△ Fsy) FDD type radio lead to Communication system, wherein the first frequency band (△ Fsye) is intended to for from mobile terminal to said two radio communications system The uplink communication of base station of, and the second frequency band (△ Fsyr) is intended to for leading to from said two radio The base station of in communication system is to the downlink communication of mobile terminal, at described first frequency band and described second frequency Band performs distribution by the carrier frequency of frequency chunks in a similar manner.
5. the method for claim 1, according to described method, described method includes following consecutive steps:
Associated steps (EA), determines the first set (A) of first group of carrier frequency, and wherein first gathers (A) Each first group of (Am) carrier frequency according to multiplexing rule (RU) be associated with base station, one or more arrowband, and
Distribution step (ER), by each carrier frequency and the frequency of a group in described first set (A) Block (BFej) carrier frequency (Fen,j) mapping of dijection groundFollow simultaneously on the one hand distribution rule (RR3) and another Aspect is followed by the carrier frequency of same group of carrier frequency that maps of the ground of the carrier frequency dijection with same frequency chunks Between minimum frequency gap (Δ fe).
6. method as claimed in claim 5, according to described method, described distribution step (ER) include for Select each frequency chunks (BFe of described frequency bandj) the first iteration loop (B11), and for selecting selected frequency chunks Each carrier frequency (Fen,j) secondary iteration ring (B21), and include described frequency at described secondary iteration ring The described carrier frequency of block and the carrier frequency dijection ground of described first set (A) mapFollow distribution simultaneously Rule (RR3) and the minimum frequency between being distributed on the carrier frequency of same group of carrier frequency in same frequency chunks Gap.
7. method as claimed in claim 6, according to described method, each secondary iteration ring (B21) include, If another carrier frequency of first group of carrier frequency and institute selected during previous secondary iteration ring Another carrier frequency stating frequency chunks is mapped, then by selected carrier frequency and the institute of selected frequency chunks mutually by dijection ground Map with stating the carrier frequency dijection of first group of carrier frequencyStep.
8. method as claimed in claim 5, according to described method, the carrier wave of each first group of carrier frequency The quantity (F=8) of frequency is at most equal to the half of the quantity (N=18) of the carrier frequency of frequency chunks, and described distribution Step (ER) includes each frequency chunks (BFe for selecting described frequency bandj) iteration loop, described iteration loop bag Include be subordinated in two first group of carrier frequencies of described first set to carry out selecting according to described distribution rule and Then by the optional carrier frequency dijection of in the carrier frequency of described frequency chunks and said two first group Ground maps, and follows the minimum frequency gap between the carrier frequency of same first group of carrier frequency simultaneously.
9. the method for claim 1, according to described method, described method includes following consecutive steps:
It is distributed first group of carrier frequency (B1, BM) first set (B) step (ER), these carrier frequencies are each It is associated from base station, described arrowband, each first group of (Bm) from least one other different first group be distributed on In the same virtual frequency block of the set belonging to virtual frequency block, follow between the carrier frequency of same group simultaneously Minimum frequency gap and simultaneously follow distribution rule (RR3), the set of described virtual frequency block includes more than or equal to institute State frequency chunks described to the quantity of determined number of frequency band, and
Associated steps (EA), for each virtual frequency block is associated with the frequency chunks of described frequency band, with Time follow carrier frequency multiplexing rule (RU).
10. one kind in same geographic area with wideband radio communications system (SYBB) on the one hand share radio Transmission community (C1, CC) and on the other hand share the narrowband radio communication system (SY of same frequency band (△ Fsy)NB), Wherein said wireless radio transmission community (C1, CC) each include base station, arrowband and wide bandwidth base station, and described band portion Ground is divided into the frequency chunks (BFe of determined number1..., BFej..., BFeJ) for being assigned to described wide bandwidth base station, described Frequency chunks includes optionally being assigned to the carrier frequency (Fe to determined number (F) of base station, described arrowband1,j..., Fen,j..., FeN,j), base station, each arrowband carries from least one of the set belonging to some different carrier frequency groups Wave frequency group is associated, it is characterised in that the described narrowband radio communication system being associated with base station, described arrowband The distribution being integrated on described frequency band of described carrier frequency groups, described distribution includes for each frequency chunks:
Selection (S106, S404) at least two carrier frequency groups, described at least two carrier frequency groups quilt Distribution is to the most different base station, arrowband, and described selection is performed to follow distribution rule (RR3) so that with two The interference that the transmitting of the base station, described arrowband of selected carrier frequency groups is correlated with has minimum and is disturbed surface area (SImin);And
The carrier frequency that the carrier frequency of described frequency chunks is mapped to two selected groups follows same group simultaneously Minimum frequency gap (Δ fe) between the carrier frequency of carrier frequency.
11. 1 kinds in same geographic area with wideband radio communications system (SYBB) the most shared wireless The defeated community of fax (C1, CC) and on the other hand share the narrowband radio communication system (SY of same frequency band (△ Fsy)NB) Base station, arrowband, wherein said wireless radio transmission community (C1, CC) each include base station, arrowband and wide bandwidth base station, and It is divided into the frequency chunks (BFe of determined number described band portion1..., BFej..., BFeJ) for being assigned to described width Band base station, described frequency chunks includes the carrier frequency to determined number (F) by being optionally assigned to base station, described arrowband Rate (Fe1,j..., Fen,j..., FeN,j), base station, each arrowband and the set belonging to some different carrier frequency groups At least one carrier frequency groups is associated, it is characterised in that will be assigned to the described arrowband of base station, described arrowband The described carrier frequency of radio communications system is distributed together with other carrier frequencies being assigned to other base stations On described frequency band, described distribution includes for each frequency chunks:
Selection (S106, S404) at least two carrier frequency groups, described at least two carrier frequency groups quilt Distribution is to the most different base station, arrowband, and described selection is performed to follow distribution rule (RR3) so that with closed The interference that the transmitting of the base station, described arrowband being coupled to two selected carrier frequency groups is correlated with has minimum and is disturbed Surface area (SImin);And
The carrier frequency that the carrier frequency of described frequency chunks is mapped to two selected groups follows same group simultaneously Minimum frequency gap (Δ fe) between the carrier frequency of carrier frequency.
12. 1 kinds for in same geographic area with wideband radio communications system (SYBB) the most altogether Enjoy wireless radio transmission community (C1, CC) and on the other hand share the narrowband radio communication system of same frequency band (△ Fsy) System (SYNB), the equipment of scheduling carrier wave frequency, wherein said wireless radio transmission community (C1, CC) each include arrowband Base station and wide bandwidth base station, and described band portion ground be divided into the frequency chunks (BFe of determined number1..., BFej..., BFeJ) for being assigned to described wide bandwidth base station, described frequency chunks includes optionally being assigned to base station, described arrowband Carrier frequency (Fe to determined number (F)1,j..., Fen,j..., FeN,j), base station, each arrowband from belong to some different At least one carrier frequency groups of the set of carrier frequency groups is associated, it is characterised in that described equipment include for Device (UA) that carrier frequency is associated with base station, described arrowband and for being associated with base station, described arrowband The device (UR) that described carrier frequency is distributed on described frequency band, described distribution includes for each frequency chunks:
Selection (S106, S404) at least two carrier frequency groups, described at least two carrier frequency groups phase Being associated with different base stations, arrowband, described selection is performed to follow distribution rule (RR3) so that with closed The relevant interference of launching of the base station, described arrowband being coupled to two selected carrier frequency groups has least interference table Area (SImin);And
The carrier frequency that the carrier frequency of described frequency chunks is mapped to two selected groups follows same group simultaneously Minimum frequency gap (Δ fe) between the carrier frequency of carrier frequency.
CN201180055986.7A 2010-09-22 2011-03-10 Method, equipment, system and base station for scheduling frequency channel CN103299665B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR1003775 2010-09-22
FR1003775A FR2965137B1 (en) 2010-09-22 2010-09-22 Method for frequency channel planning for a narrow band network communication system
PCT/EP2011/001170 WO2012037990A1 (en) 2010-09-22 2011-03-10 Scheduling of frequency channels in a narrowband radiocommunication system

Publications (2)

Publication Number Publication Date
CN103299665A CN103299665A (en) 2013-09-11
CN103299665B true CN103299665B (en) 2016-11-30

Family

ID=

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002003717A2 (en) * 2000-07-05 2002-01-10 Telefonaktiebolaget L M Ericsson (Publ) Allocated frequency spectrum sharing between wideband and narrowband radio access technologies
CN101202585A (en) * 2006-12-14 2008-06-18 大唐移动通信设备有限公司 Radio communication base station, terminal and method for obtaining system information

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002003717A2 (en) * 2000-07-05 2002-01-10 Telefonaktiebolaget L M Ericsson (Publ) Allocated frequency spectrum sharing between wideband and narrowband radio access technologies
CN101202585A (en) * 2006-12-14 2008-06-18 大唐移动通信设备有限公司 Radio communication base station, terminal and method for obtaining system information

Similar Documents

Publication Publication Date Title
Hu et al. Full spectrum sharing in cognitive radio networks toward 5G: A survey
US9635676B2 (en) Apparatus for an enhanced node B for inter-cell interference coordination in wireless networks
US9167571B2 (en) Base station and method for resource allocation using localized and distributed resource blocks
KR101881414B1 (en) System and method for managing resource in communication system
EP2580877B1 (en) Transmitting data in a wireless white space network
US8310991B2 (en) Method, apparatus and computer program for controlling coexistence between wireless networks
KR101528983B1 (en) Resource sharing between secondary networks
CN102918907B (en) Wireless resource setting method, wireless communication system and wireless base state
CN102595415B (en) LTE operation in white spaces
US20160360421A1 (en) Apparatus and method for antenna management
JP6011731B2 (en) System and method for managing coexistence of shared spectrum connections
JP2660189B2 (en) Method and apparatus for allocating communication bandwidth
JP4589287B2 (en) System and method for managing adjacent channel interference using power control and directed channel assignment together
CN100380992C (en) Interference reduction in a time division duplex communication system using code division multiple access
EP0684744B1 (en) Apparatus and method for dynamic resource allocation in wireless communication networks utilizing ordered borrowing
JP4263257B2 (en) System and method for managing adjacent channel interference in a channelized cellular system
EP2436204B1 (en) Method and apparatus for zone controller based dynamic spectrum allocation
EP0737398B1 (en) Method of allocating communication resources in a communication system
CN103210593B (en) Methods and apparatus for inter-cell interference coordination self-organized network
EP1997333B1 (en) Neigboring cell interference management in a sc-fdma system
JP5331188B2 (en) Method of assigning frequency subbands to a plurality of interfering nodes in a wireless communication network, control device for wireless communication network, and wireless communication network
EP2043398B1 (en) Method for reducing inter-cell interference in wireless ofdma networks
US8144657B2 (en) Clustering based resource allocation in multi-cell OFDMA networks
CN101406085B (en) Measurement-assisted dynamic frequency-reuse in cellular telecommuncations networks
ES2285132T3 (en) Method and system to calculate the optimal assignment of cell interval in cell systems that use time division.

Legal Events

Date Code Title Description
PB01 Publication
SE01 Entry into force of request for substantive examination
GR01 Patent grant