CN102694639B - Communicator based on multicarrier transmission mode and communication system - Google Patents

Abstract

The invention provides a kind of communicator and communication system. The multicarrier transmission mode that this communicator is accommodated in by using a series of subcarrier carries out in the communication system of information exchange each other at communicator, above-mentioned communicator comprises: receiver, this receiver is configured to use the specific frequency band of selecting the multiple frequency bands from distributing to above-mentioned communication system to receive service band information, above-mentioned service band information instruction service band, this service band comprises at least one frequency band beyond above-mentioned specific frequency band, and above-mentioned service band is for carrying out each other the transmission of data message at above-mentioned communicator; Wherein, after above-mentioned receiver receives above-mentioned service band information, above-mentioned receiver uses the indicated service band receiving data information of above-mentioned service band information.

Description

Communicator based on multicarrier transmission mode and communication system

The application is to be on October 29th, 2004 applying date, and application number is 200480044327.3(international application noFor PCT/JP2004/016154), denomination of invention is " communicator based on multicarrier transmission mode and communication system "The divisional application of patent application.

Technical field

The multicarrier transmission mode the present invention relates to by utilizing a series of subcarrier carries out each other at communicatorThe communication system of the exchange of information (data), is particularly accommodated in the communicator in this communication system.

Background technology

The above-mentioned communication system of discussing as the present invention, a most preferred example is mobile body communication system, afterExplanation describe as an example of this mobile body communication system example. Therefore, if according to this example, above-mentioned communicatorFor (i) base station (or its upper base-station control apparatus), and be (ii) movement station (PDA's etc. is eventually mobileEnd). And, for convenient, in the explanation below, sometimes the former is (i) called " base station ", by the latter (ii)Only be called " terminal ". Wherein, will learn by narration below, the present invention can not only be applied to above-mentioned base station, alsoCan be applied to above-mentioned terminal substantially samely, there is no need intended distinction the two.

In mobile body communication system, guarantee that the required transmission speed of user is very large class providing aspect this serviceTopic. On the other hand, the service band that mobile body communication system uses is fixed according to each system conventionally, soMake to have adopted user multiplexing etc., its maximum transfer speed is also limited. Therefore, inquiring into according to required transmission speedChange neatly the method for above-mentioned service band.

And in the situation that considering by mobile body communication system entirety, behaviour in service according to above-mentioned each use frequentlyBe with and difference, sometimes produce the problem that this frequency band cannot be used completely. Therefore, from the viewpoint of effective utilization of frequency, also inquiring into the technology that makes service band variable.

Under this situation, propose at MC (Multi-Carrier)-CDMA (CodeDivisionMultipleAccess)And in the multi-carrier transmission mobile body communication system of OFDM (OrthogonalFrequencyDivisionMultiplex) etc.Make the variable technology of service band. 4 following disclosed methods of patent documentation 1～4 have for example been proposed. It is detailedDetails condition will describe with reference to accompanying drawing in the back, but summary is separately as described below.

1) patent documentation 1 disclosed " polynary method of attachment and device " is characterised in that, a series of by cutting apartSubcarrier come freely service band to be distributed to user.

2) patent documentation 2 disclosed " movement station, base station apparatus and mobile communicating net " is characterised in that,In communication network, setup control signal transmits special subcarrier band.

3) patent documentation 3 disclosed " method for channel allocation " is characterised in that, between base station and movement stationThe length of communication distance increase and decrease the quantity of a series of subcarrier.

4) patent documentation 4 disclosed " wireless base station apparatus and wireless communications method " is characterised in that, by changingBecome the bandwidth of each subcarrier in a series of subcarrier, make the adaptive-bandwidth of service band. And above-mentioned eachPatent documentation is as follows.

Patent documentation 1: No. 9-205411, Japanese Unexamined Patent Publication

Patent documentation 2: No. 2003-264524, Japanese patent gazette JP

Patent documentation 3: No. 2004-21476, Japanese patent gazette JP

Patent documentation 4: No. 2002-330467, Japanese patent gazette JP

Conventional art based on above-mentioned 4 patent documentations 1～4 has following problem points.

1) No. 9-205411, patent documentation 1(Japanese Unexamined Patent Publication) in, used owing to not transmittingThe information of subcarrier, decodes so receiver side need to receive all subcarriers, and efficiency is low.

2) No. 2003-264524, patent documentation 2(Japanese patent gazette JP) in, although transmission about useThe information of subcarrier, but must receive the shared control channel for transmitting this sub-carrier information, also need to carry outDemodulation code.

In addition, carrying out user multiplexing in the situation that, must from the data of transmitting this shared control channel, carryTake out the required information of user. And then, due to the information to this shared control channel input face to each user, so haveMay under lower transmission speed, become not enough by frequency band. Also because it is all shared control letters that user sharedRoad, so once change the subcarrier using, can exert an influence to all users. Therefore cannot be simplyChange the subcarrier of this shared control channel.

3) No. 2004-214746, patent documentation 3(Japanese patent gazette JP) in, although the bandwidth of data channelVariable, but the fixing frequency band that shared control channel still uses all users to share has and above-mentioned patent documentation2 same problems.

4) No. 2002-330467, patent documentation 4(Japanese patent gazette JP) in, considering that user is multiplexingSituation under, for the interference under multiple users' transmission is suppressed to reduced levels, also need between user, implement codeMultiplexing. But if the therefore bandwidth difference of subcarrier between user, the intercept of code worsens, and finally becomes dryThe reason of disturbing.

In order to prevent this interference, the bandwidth that changes subcarrier in the case of certain user, other users also must be similarlyChange the bandwidth of subcarrier. Its result, the situation that is transmitted poor user tie down, and the bandwidth of subcarrier constantly broadens,Reduce efficiency of transmission. Therefore, the bandwidth of change subcarrier has the defective work that sometimes cannot become effective means.

Summary of the invention

Therefore the present invention is in view of above-mentioned each problem points, and its object is to provide one can be easy to carry out distributing to communicationIn the whole frequency band of system, freely expand, dwindle or change each user's service band, and this expansion, dwindleOr change the communication system (mobile body communication system) that can not affect other users, provide especially a kind of logical for thisThe communicator (base station and/or terminal) of communication system.

According to the present invention, as used below, accompanying drawing describes in detail, first to distributing to this communication systemWhole frequency band is cut apart and is set specific frequency band in multiple frequency bands of forming. Then use this specific frequency band, willDetermine and whether should use each other " the service band information " of remaining certain frequency band logical from one at communicatorT unit is transferred to another communicator. And then, be " the master in above-mentioned whole frequency band by this specific band settingFrequency band ". This dominant frequency band is also transmission " data message (user data) " except above-mentioned " service band information ".Also at least 1 frequency band setting among the frequency band outside removing of above-mentioned multiple frequency bands above-mentioned " dominant frequency band " is doneFor " expansion frequency band ". This expansion frequency band is mainly used in transmitting further data message, can tackle the increasing of data volumeGreatly. Therefore, set as required this expansion frequency band. But above-mentioned dominant frequency band must be set really at radiolink immediately,And by this dominant frequency band, not only above-mentioned " service band information ", connects originally in the scope allowing in transmission capacity" data message " (user data) also transmit. And then can also in this dominant frequency band, comprise general " controlInformation processed " (subscriber control information). Solve thus above-mentioned each problem.

According to an aspect of the present invention, the invention provides a kind of communicator, this communicator is accommodated in by usingThe multicarrier transmission mode of a series of subcarrier carries out in the communication system of information exchange each other at communicator, itsBe characterised in that, above-mentioned communicator comprises: receiver, this receiver is configured to use from distributing to above-mentioned communication systemThe specific frequency band of selecting in multiple frequency bands of system receives service band information, and above-mentioned service band information instruction is usedFrequency band, this service band comprises at least one frequency band beyond above-mentioned specific frequency band, above-mentioned service band is used forState the transmission that communicator carries out data message each other; Wherein, receive above-mentioned service band letter at above-mentioned receiverAfter breath, above-mentioned receiver uses the indicated service band receiving data information of above-mentioned service band information.

According to a further aspect in the invention, also provide a kind of communication system, this communication system is by being used multiple subcarriersMulticarrier transmission mode carry out each other information exchange at communicator, above-mentioned communicator comprises: base station, shouldBase station is configured to generate service band information, this service band information instruction service band, and this service band comprises spyAt least one frequency band beyond fixed frequency band, above-mentioned base station is configured to use from distributing to the multiple of above-mentioned communication systemThe specific frequency band of selecting in frequency band sends above-mentioned service band information, and above-mentioned service band is used in base station and movementBetween standing, carry out the transmission of data message; And movement station, this movement station be configured to use above-mentioned specific frequency band fromAbove-mentioned base station receives above-mentioned service band information, and above-mentioned movement station is configured to use the use frequency receiving from above-mentioned base stationThe indicated service band of information carrys out receiving data information.

Brief description of the drawings

Fig. 1 is the figure that represents the basic structure based on communicator of the present invention (sending side).

Fig. 2 is the figure that represents the basic structure based on communicator of the present invention (receiver side).

Fig. 3 is the figure that represents an object lesson based on communicator of the present invention (sending side) 10.

Fig. 4 is the figure that represents an object lesson based on communicator of the present invention (receiver side) 20.

Fig. 5 is the figure that represents the variation based on communicator of the present invention (sending side) 10.

Fig. 6 is the figure that represents the variation based on communicator of the present invention (receiver side) 20.

Fig. 7 is the figure that represents another variation based on communicator of the present invention (sending side) 10.

Fig. 8 is the figure that represents another variation based on communicator of the present invention (receiver side) 20.

Fig. 9 is the figure that represents the situation of the frequency division in communication system.

Figure 10 is the figure that has represented to select respectively the situation of 1 " dominant frequency band " and " expansion frequency band ".

Figure 11 is the figure representing for the 1st example of the method for salary distribution of multiple users' dominant frequency band.

Figure 12 is the figure representing for the 2nd example of the method for salary distribution of multiple users' dominant frequency band.

Figure 13 is the flow chart that represents an example of the frequency band that dynamically changes dominant frequency band.

Figure 14 A and Figure 14 B are the figure that represents the apparatus structure example of the sending side of pilot signal.

Figure 15 A and Figure 15 B are the apparatus structure examples of returning to side that represents response (CQI) information for pilot signalFigure.

Figure 16 is the figure that represents the 1st multiplexing example of pilot signal.

Figure 17 is the figure that represents the 1st multiplexing example of pilot signal.

Figure 18 is the figure that the dynamic modification of dominant frequency band is concisely shown.

Figure 19 is the flow chart that represents to expand the importing of frequency band and the 1st example of change.

Figure 20 is the flow chart that represents to expand the importing of frequency band and the 2nd example of change.

Figure 21 is the flow chart that represents to expand the importing of frequency band and the 3rd example of change.

Figure 22 is the figure that the dynamic modification of expansion frequency band is concisely shown.

Figure 23 is the flow chart that represents the both sides' that change dominant frequency band and expansion frequency band a example.

Figure 24 is the flow chart that the both sides' of dominant frequency band and expansion frequency band dynamic modification is concisely shown.

Figure 25 is the figure that represents the apparatus structure example of returning to side of response (CQI) information for pilot signal.

Figure 26 is the figure that represents the table of the high efficiency of transmission for service band information is described.

Figure 27 is the figure that represents the dynamic modification of expanding frequency band.

Figure 28 is the figure that represents the 1st example of frequency band expansion mode.

Figure 29 is the figure that represents the 2nd example of frequency band expansion mode.

Figure 30 is the figure that represents the 3rd example of frequency band expansion mode.

Figure 31 is the figure of the apparatus structure example of the communicator (sending side) that represents the 10th embodiment.

Figure 32 is the flow chart that represents the action case in the device of Figure 31.

Figure 33 is the figure for the 11st embodiment is described.

Figure 34 is the figure that represents the main points of patent documentation 1 disclosed prior art.

Figure 35 is the figure that represents the main points of patent documentation 2 disclosed prior aries.

Figure 36 is the figure that represents the main points of patent documentation 3 disclosed prior aries.

Figure 37 is the figure that represents the main points of patent documentation 4 disclosed prior aries.

Detailed description of the invention

First with reference to accompanying drawing, above-mentioned prior art (patent documentation 1～4) is described in order to understand the present invention as early as possible.

Figure 34 is the figure that represents the main points of patent documentation 1 disclosed prior art. This legend is as represented 7 useThe frequency of family U1～U7 distributes (epimere), hypomere to represent in detail a series of pair of carrying out for user U1 and U2The distribution of carrier wave. Transverse axis is frequency.

Native system is characterised in that, multiple carrier waves are disposed on the frequency band distributing in sending side, according to use continuouslyFamily (U1～U7) is cut apart multiple subcarriers and is configured continuously.

Particularly, being for example located at the whole frequency band that can use in 1 communication system is 20MHz, and setting it has250 subcarriers. Therefore the bandwidth of each subcarrier is 20[MHz]/250=80[kHz]. And multiple usersBetween (U1～U7), these 250 subcarriers of dynamic assignment use.

Now, for example dynamic assignment is to user A(U2) 50, give other user B(U1) 75, makeCan change by the number of subcarrier.

Accompany therewith, service band becomes 50 × 80[kHz for user A]=4[MHz], become 75 for user B× 80[kHz]=6[MHz], service band is variable according to each user. Now, establish the subcarrier being assigned with frequentlyOn rate axle, be continuous. And, can also make the variable-width of cutting apart of frequency band.

Figure 35 is the figure that represents the main points of patent documentation 2 disclosed prior aries. This figure represents on frequency axisThe figure of the distribution form of shared control channel and data channel.

Native system, in multi-carrier CDMA system, transmits special subcarrier and transfer of data (number by control signalIt is believed that) special subcarrier separates and sets. This shared control channel is expanded by intrinsic extended code.Therefore,, in the situation that receiving this shared control channel, the specific subcarrier of demodulation, can reduce its signal placeReason amount.

Figure 36 is the figure that represents the main points of patent documentation 3 disclosed prior aries. This figure represents in above-mentioned Figure 35The situation that the frequency band of data channel can change according to propagation distance (and communication distance) between base station. ItsIn, transmitted power also changes (large-in-little).

Native system is to establish the transmission speed of every 1 subcarrier for fixing, and the number of distributing to user's subcarrier can becomeChange, thereby realize the system of the communication of variable velocity, when in the very near situation of the distance between base station and terminal, on one sideThe transmitted power of each subcarrier is diminished, distribute more subcarrier on one side, in the time that it is distant, make each on one sideIt is large that the transmitted power of individual subcarrier becomes, and distributes less subcarrier on one side.

In addition, the subcarrier that on the one hand shared control channel is used is minority, on the other hand to data communication channel(data channel) distributes multiple subcarriers, separates the two completely and configure on frequency axis. And, use and share controlThe subcarrier that channel processed is special, distributes to the center subcarrier of the subcarrier that data channel uses to movement station notice from base stationThe quantity of number and the subcarrier using.

Figure 37 is the figure that represents the main points of patent documentation 4 disclosed prior aries. This figure represents according to communication environmentsQuality can change the situation of the bandwidth of each subcarrier.

It is constant that native system makes the total number of subcarrier according to the situation of communication environments in wireless transmission, simultaneouslyChange the bandwidth of each subcarrier. For example when degenerating, this propagation state make the frequency band of each subcarrier broaden.Thus, total because the subcarrier that can not make changes to transmit, so can be regardless of the quality of communication environmentsAnd transmission speed is maintained constant.

The present invention is for solving the prior art illustrated by above-mentioned Figure 34～Figure 37 (patent documentation 1～4) pointAbove-mentioned each problem points not having, describes in detail with reference to the accompanying drawings.

Fig. 1 is the figure that represents the basic structure based on communicator of the present invention (sending side),

Fig. 2 is the figure that represents the basic structure based on communicator of the present invention (receiver side).

In Fig. 1, cross reference number 10 represents communicator (sending side), and in Fig. 2, cross reference number 20 represents communicator(receiver side), they are accommodated in identical communication system (mobile body communication system). And, as mentioned above,Communicator 10 for base station communicator 20 be terminal, otherwise or also can, can both apply the present invention, butFor better understanding, in the following description as long as no special explanation, the communicator 10 of just establishing sending side isBase station, the communicator 20 of establishing receiver side is terminal.

First with reference to Fig. 1, service band selection/configuration part 15 is special use selection function select should with to square tubeThe service band using between T unit 20. " service band information " If (frequency) based on this selection is transfused toTo sending data generating unit 11,, generate and the transmission data (user data) that should be transferred to communicator 20 hereinThe transmission data Dt (transmission) that Du (user) becomes one. Therefore send data Dt comprise transmission data Du andService band information If, but in fact also contain other " communication control information " Ict (control). This information IctFor example the information of the modulation system that uses about QAM etc. and the transmission number of 1 time about transmission data DuAccording to the information etc. of amount.

Above-mentioned transmission data Dt is input to the many of next stage be applied in the modulation of regulation in modulation portion 12 afterCarrier-wave transmission transmission processing portion 13. By the set-up function of above-mentioned service band selection/configuration part 15, to this handling part13 apply instruction should carry out the band setting index signal of transmission processing on above-mentioned selected service bandSb (band), this handling part 13, in the frequency band based on this signal Sb, carries out sending according to the signal of multi-carrier transmissionProcess.

And then in radio section 14, carry out frequency inverted for the transmission data-signal St from above-mentioned handling part 13,The signal sending this conversion to the other side's communicator (terminal) 20 from the antenna AT of next stage.

On the other hand, with reference to Fig. 2, with antenna AT(Fig. 2) receive from above-mentioned antenna AT(Fig. 1) wirelessSignal then carries out frequency inverted in radio section 21, becomes and receives data-signal Sr, and input to multicarrier biographyDefeated Return Reception Dept. 22. In this handling part 22, carry out according to multi-carrier transmission to this reception data-signal SrSignal reception & disposal, so in the demodulation section 23 of next stage the signal after this signal reception & disposal of demodulation.

Reception data Dr after this demodulation is decoded in reception data decoding part 24, is separated into transmission number originallyAccording to Du with the above-mentioned service band information If being set before. And from these data Dr, also isolate above-mentionedCommunication control information Ict. And the part of being controlled by this information Ict is owing to there is no direct pass in essence with the present inventionSystem, thereby the description thereof will be omitted.

As mentioned above, from receive data Dr be isolated to the service band information If of script be input to useBand setting portion 25. This configuration part 25 receives this information And if reproduces above-mentioned band setting index signal Sb.This signal Sb is applied to above-mentioned multi-carrier transmission Return Reception Dept. 22, in this handling part 22 in sending side instituteIn the frequency band of selecting, carry out the signal reception & disposal according to multi-carrier transmission. And, also can establish radiolinkOriginally, selected predetermined frequency band.

The present invention is by above-mentioned band setting index signal Sb, and make sending side (10) and receiver side (20) passableUse identical service band. And according to this signal Sb can be in sending side (10) and this pair of receiver side (20)In side, expand simultaneously, dwindle or change this service band. Can reach so above-mentioned object of the present invention.

Contrast with above-mentioned prior art the basic structure that specifically describes a little again the invention described above on one side on one side.

The dividing frequency band that can use in communication system entirety in the present invention, is multiple frequency bands. For example, this is logicalThe service band of communication system entirety is 20[MHz] time, taking a frequency band as 5[MHz], be divided into four. Using shouldA frequency band 5[MHz] transmit the control channel that service band information is transmitted and transmission data are transmittedEach information of transmission channel (data channel).

According to the present invention, as mentioned above, to major general for the frequency band that transmits this control channel as " dominant frequency band ", alsoUsing the frequency band of being expanded as " expansion frequency band ". If for example considered with ofdm communication system, establish above-mentioned everyA frequency band 5[MHz] comprise 100 subcarriers, the bandwidth of also establishing each this subcarrier is 50[kHz], using should100 a series of subcarriers, carry out each information of transmitting control channel and data channel. The multiplexing method of two informationCan be that time-multiplexed, channeling or extended code are multiplexing.

As mentioned above, from No. 2004-214746, patent documentation 3(Japanese patent gazette JP) different, by receiving" dominant frequency band " information is decoded, thus clear and definite service band (or quantity of service band), so canBe easy to carry out service band expansion, dwindle or change. And thus with patent documentation 1(Japanese patent gazette JPFlat No. 9-205411) and No. 2004-214746, patent documentation 3(Japanese patent gazette JP) difference, acceptance divisionIt is simple that structure also becomes.

In addition, if the quantity of the subcarrier of each frequency band is constant, the quantity of following service band change andThe quantity of subcarrier is recently changed with integer. Therefore, if compare the patent documentation 3(day of subcarrier dynamic changeNo. 2004-214746, this patent communique JP), the structure of acceptance division becomes simple.

And, by from base station, terminal being specified to service band in advance, thereby can be easy to change and append above-mentioned expansionFrequency band, can also carry out the change of dominant frequency band.

And then, if fix as mentioned above the bandwidth of each subcarrier, can be as patent documentation 4(Japan Patent public affairsNo. 2002-330467, report JP) like that other users are brought to impact, can change service band. The following describes baseIn various embodiments of the present invention.

[embodiment 1: the setting of service band]

The disclosed some features of present embodiment 1 are shown first as follows. The main point of this feature is as that of by the agency ofSample, be following 3 (i)～(iii).

(i) the multiple frequency bands that form from the whole frequency band of distributing to communication system is cut apart, set specificFrequency band, uses this specific frequency band, will determine and whether should mutually between (10,20), use residue at communicator" service band information " If of certain frequency band transmit, be (ii) in whole frequency band by this specific band setting" dominant frequency band ", this dominant frequency band is gone back transmitting data information (Du) except service band information If, (iii) will be fromAt least 1 frequency band that the removing of above-mentioned multiple frequency bands set among the frequency band outside above-mentioned " dominant frequency band " is as " expandingOpen frequency band ", this expansion frequency band is mainly used in transmitting further data message (Du).

Then, in present embodiment 1 in addition disclosed some main points below being 4 (iv)～(vii) in.

(iv) above-mentioned " dominant frequency band " is in the time that communicator has been established radiolink between (10,20) mutually, regularlyArrange,

(v) when communicator (20) has when multiple, to each set respectively " the dominant frequency band " in above-mentioned multiple frequency bands,And corresponding to each dominant frequency band that distributes respectively of these multiple communicators (20).

2 above communicators (20) by time-multiplexed and/or extended code multiplexing use simultaneously identical" dominant frequency band ",

(vii) increase and decrease in addition, the quantity of expansion frequency band according to the required transmission speed of data message (Du).

Fig. 3 is the figure that represents a concrete example based on communicator of the present invention (sending side) 10,

Fig. 4 is the figure that represents a concrete example based on communicator of the present invention (receiver side) 20. And instituteHave and in figure, all give same cross reference number to identical inscape or mark represents. In addition, Fig. 3 and Fig. 4Shown object lesson is not limited to present embodiment 1, in other embodiments 2～10 described later, also can jointly answerWith.

First with reference to the communicator (sending side) 10 of Fig. 3, to inscape 11～15 Hes shown in Fig. 1Du, Dt, St, the corresponding part of Sb is given their cross reference number or mark 11～15 and Du, Dt, St, Sb showsShow.

Send data generating unit 11 according to the example of this figure, by data block preparing department 31, coding portion 32, transmission dataAmount calculating part 33, coding portion 34 and multiplexing unit (Mux) 35 form.

According to the service band information If from above-mentioned service band selection/configuration part 15, first pass through transmitted data amountCalculating part 33 calculates transmission data length, in data block preparing department 31, collects according to each transmission data lengthFor data block. And then use this transmission data length in coding portion 32, to transmit the coding of data.

Together with the communication control information Ict of the modulation system that above-mentioned service band information If uses with expression etc., encodingIn portion 34, be encoded. And coding portion 32 and 34 also can be used as that 1 coding portion collects Du and If encodes.

Each coding output from two coding portions 32 and 34 is re-used in multiplexing unit (Mux) 35, on becomingThe transmission data Dt stating. These data Dt is also modulated in modulation portion 12 as mentioned above. As this multiplexing method,Have the channeling that partition subcarriers uses, time-multiplexed (for example using the frame formatting shown in Figure 16) andExtended code is multiplexing etc. There are QPSK, 16QAM, 64QAM etc. as the modulation system of modulation portion 12 in addition.

Then about multi-carrier transmission transmission processing portion 13, in the example shown in this figure, by inscape 36,37,38,39 and 40 form. Wherein, express the example taking the communication of OFDM as prerequisite. Other is with MC-CDMAThe communication example that is prerequisite as shown in Fig. 7 (Fig. 8).

In separation unit (DeMux) 36, be separated into and belong to the information of " dominant frequency band " and belong to " expansion frequency band "Information. After the information that belongs to " dominant frequency band " is converted to parallel signal in serial/parallel converter section (S/P) 37,In contrary fast Fourier transform portion (IFFT) 38, this parallel signal is carried out to T/F conversion. Be converted to this frequencyParallel signal again in parallel/serial converter section (P/S) 39, be converted to serial signal. And then at protection interval (GI)In insertion section 40, this serial signal is inserted to the protection interval GI for preventing inter symbol interference.

The transmission data-signal St obtaining is like this input to radio section 14. This radio section 14 is according to the example of this figure, byGeneral frequency mixer 41, local oscillator 42, power amplifier 44 form and (have omitted D/A inverter and filtrationDevice etc.), send this transmission data-signal St by antenna AT. Now, adder 43 arranges on the way.

Adder 43 is as mentioned above to belonging to above-mentioned " expansion frequency band " separated in separation unit (DeMux) 36Information, by inscape 37 ', 38 ', 39 ', 40 ', 41 ' and 42 ' implement with above-mentioned inscape 37,38,39, the same processing of processing of " dominant frequency band " use of 40,41 and 42, obtains the transmission number of " expansion frequency band " sideThe number of it is believed that St, becomes one with the transmission data-signal St of above-mentioned " dominant frequency band " side.

The transmission data of above-mentioned " expansion frequency band " side only generate in the time of the transfer of data of needs " expansion frequency band ", andWhether be necessary to be determined by the inside of the band setting index signal Sb of the selection/configuration part 15 from above-mentioned.

Follow with reference to Fig. 4, corresponding to inscape 21～25 and Sr shown in Fig. 2, Dr, Du, If, the part of Sb is composedGive their cross reference number and mark 21～25 and Sr, Dr, Du, If, Sb represents.

Radio section 21, according to the example of this figure, removes from antenna AT's by bandpass filter (BPF) 51Receive unwanted band signal in signal, be converted to required reception by frequency mixer 52 and local oscillator 53Frequency, thus obtain receiving data-signal Sr.

This reception data-signal Sr is imported into multi-carrier transmission Return Reception Dept. 22 and processes. This handling part 22According to the example of this figure, formed by illustrated inscape 54,55,56,57 and 58.

First in removing portion 54, protection interval (GI) removes the protection interval of inserting in sending side. After GI removesSignal is converted to parallel signal by serial/parallel converter section (S/P) 55 again, at fast Fourier transform portion (FFT)In 56, this parallel signal is carried out to frequency-time conversion. The parallel signal of this time conversion of process is again in parallel/serial conversionIn portion (P/S) 57, be converted to serial signal.

On the other hand, in the time thering is the information that belongs to " expansion frequency band " in the reception signal from antenna AT, pass throughFrequency mixer 52 ' and local oscillator 53 ' extract the signal of this " expansion frequency band " information, want by identical formationElement S/P55 ', FFT56 ' and P/S57 ' carry out the processing same with the processing of above-mentioned inscape 55～57, becomePass through the serial signal of time conversion.

Each serial signal from above-mentioned parallel/serial converter section 57 and 57 ' is re-used in multiplexing unit (Mux) 58, soAfter demodulated in demodulation section 23. And, belong to the information of " dominant frequency band " during when only sending, above-mentioned multiplexing unit58 do not carry out multiplexingly, and only make signal pass through.

Become reception data Dr demodulated in the demodulation section 23 of next stage from the signal of multiplexing unit 58, afterwardsBe input to and receive data decoding part 24. This lsb decoder 24 is according to the example of this figure, by separation unit (DeMux) 59,Data channel lsb decoder 60, control channel lsb decoder 61 and transmitted data amount calculating part 62 form.

Reception data Dr is separated into data channel side data and control channel side data by above-mentioned separation unit 24, divides respectivelyDispensing lsb decoder 60 and lsb decoder 61. According to transmitted data amount described later, reproduce transmission originally from lsb decoder 60Data Du. On the other hand, reproduce " service band information " If from lsb decoder 61.

Above-mentioned information If from lsb decoder 61 inputs to transmitted data amount calculating part 62 on the one hand, herein according to this IfCalculate the data length that receives transmission data, carry out the solution of the transmission data of above-mentioned lsb decoder 60 according to this data lengthCode.

Be given on the other hand above-mentioned service band configuration part 25 from the above-mentioned information If of lsb decoder 61,This generates above-mentioned band setting index signal Sb. Then according to the content of this signal Sb, on the road of illustrated dotted lineOn footpath, circuit part (22,58,59) is separately carried out to the setting corresponding with selected frequency band. And, figureThe structure of 4 reception data decoding part 24 also can start a lsb decoder (being total to of lsb decoder 60 and 61 mostWith changing) input after reception data Dr decodes, in separation unit 59, be separated into data channel and control channel.

In the structure of above-mentioned Fig. 3 and Fig. 4, the frequency band of " dominant frequency band " is fixed, and only has " expansion frequency band "Frequency band variable. But in certain embodiment of the present invention not only " expansion frequency band ", the frequency band of " dominant frequency band " is also canBecome. Shown in figure by the structure example of its realization.

Fig. 5 is the figure that represents the variation based on communicator of the present invention (sending side) 10,

Fig. 6 is the figure that represents the variation based on communication control unit of the present invention (receiver side) 20.

The difference of the structure shown in the structure shown in these Fig. 5 and Fig. 6 and above-mentioned Fig. 3 and Fig. 4 is, figureIndicating range from the band setting index signal Sb of service band selection/configuration part 15 in 5 is not only that " expansion frequentlyBand " side (37 '～42 ') (situation of Fig. 3), also relate to " dominant frequency band " side (37～42). And in Fig. 6,Indicating range from the band setting index signal Sb of service band configuration part 25 is not only " expansion frequency band " side(52 '～57 ') (situation of Fig. 4), also relates to " dominant frequency band " side (52～57). Like this, also can change " mainFrequency band " frequency band.

In addition, the explanation of above-mentioned concrete example is carried out taking the communication under OFDM as prerequisite, but outside also can useThe communication of MC-CDMA is as prerequisite. In this latter's situation one of the communicator on (MC-CDMA basis)Individual example represents herein.

Fig. 7 is the figure that represents another variation based on communicator of the present invention (sending side) 10.

Fig. 8 is the figure that represents another variation based on communicator of the present invention (receiver side) 20.

For example more above-mentioned Fig. 5 and Fig. 6 and this Fig. 7 and Fig. 8, in sending side (10), multi-carrier transmission sending placeThe structure difference of reason portion 13, and in receiver side (20), the structure difference of multi-carrier transmission Return Reception Dept. 22.

,, in the handling part 13 shown in Fig. 7, difference is to use and copies (Copier) 46 of portion and multiplicationPortion 47. In addition, in the handling part 22 shown in Fig. 8, difference is to use multiplier 65 and synthetic portion (∑)66。

First use Fig. 7 that sending action is described. The transmission data that modulation generates, in the portion of copying (Copier) 46Quantity according to subcarrier copies. In multiplier 47 by extended code (C1, C2 ... Cn) being multiplied by this institute copiesSignal. This result is carried out to IFFT in IFFT portion (38,38 ') and carry out time of implementation-frequency inverted. Then,In GI insertion section 40, after having inserted GI, carry out frequency inverted, and send with antenna AT. In addition, withThe service band of selecting in service band selection portion 15 is basis, changes the setting of multi-carrier transmission transmission processing portion 13.

Next,, about receiving action, use Fig. 8 to describe. First frequency inverted receives signal and obtains base band,Remove in portion 54 and remove GI at GI. Then, carry out serial/parallel conversion (55,55 '), each involution in multiplier 65With extended code (C1, C2 ... Cn) carry out despreading. In FFT portion (56,56 '), this result is carried out to FFT,After having carried out frequency-time conversion, in synthetic portion 66, get with. In this result of demodulation section 23 demodulation. Enter afterwardsRow processing similar to the above, extracts service band information If. Then, with this service band information If extractingFor basis changes the setting of multi-carrier transmission Return Reception Dept. 22. And, in Fig. 7 and Fig. 8, change and useWhen frequency band, make the number of codes n of frequency expansion variable. Use as mentioned above in the situation of MC-CDMA, withOFDM relatively can simplification device structure. But then, because making counting of FFT and IFFT, generation can moveThe needs that state changes, institute is so that control becomes numerous and diverse.

Further illustrate present embodiment 1 on one side with reference to the configuration structure of frequency band on one side below.

In the communication system of changed service band that uses OFDM etc., with specific frequency band transmission service bandInformation If. Then,, by the specific frequency band of demodulation code, can obtain service band information If. By this informationIf, can carry out the communication under expanded frequency band. As its prerequisite, in the present invention, carry out as follows dividing of whole frequency bandCut.

Fig. 9 is the figure that represents the situation of the frequency division in communication system. The a series of subcarrier of this figure represents to distributeGive the whole frequency band of communication system. Then be multiple frequency bands by this whole dividing frequency band. This figure represents to be divided into 4 partsExample, is divided into four frequency bands, i.e. " frequency band 1 ", " frequency band 2 ", " frequency band 3 ", " frequency band 4 ". Then select thisSome as above-mentioned " dominant frequency band " in " frequency band 1 " a bit～" frequency band 4 ", then frequency band outside selecting is as upperState " expansion frequency band ".

Figure 10 is the figure that represents the situation of selecting respectively one " dominant frequency band " and " expansion frequency band ". As " dominant frequencyBand " for example select above-mentioned frequency band 1, for example select above-mentioned frequency band 2 as " expansion frequency band ". As mentioned above, " mainFrequency band " distribute to the transmission of control channel (CH) and data channel (CH), " expansion frequency band " distributes and feeds oneThe transmission of the data channel of step. For example determine by base station or its upper base-station control apparatus the dominant frequency that certain terminal is usedBand. Otherwise or also can, from end side, base station side is specified to dominant frequency band.

Above-mentioned dominant frequency band also can be fixed as communication system in advance, or also can be at communicator mutually (base station and endEnd) between establish when wireless and set, fix this setting until this sign off.

And then can also work as communicator (user terminal) and have when multiple, set according to each user terminal differenceDominant frequency band. In figure, represent this situation.

Figure 11 is the figure representing for the 1st example of the method for salary distribution of multiple users' dominant frequency band.

Figure 12 is the figure representing for the 2nd example of the method for salary distribution of multiple users' dominant frequency band. And this method of salary distributionCan be applied to expansion frequency band.

First with reference to Figure 11, to multiple frequency bands, frequency band 1～frequency band 4 each distribute respectively each user U1～The dominant frequency band of U4. Wherein, now carry out limited subscriber number by the quantity of frequency band.

So as shown in figure 12, same dominant frequency band is distributed to multiple communicators (user terminal) simultaneously. It canTo be undertaken by user is multiplexing. As this multiplexing method, there is time-multiplexed and extended code multiplexing, or also canCarry out multiplexing in conjunction with them.

And then in present embodiment 1, according to the required transmission speed of data message (transmission data Du), canIncrease and decrease service band (frequency band 1～frequency band 4).

That is, in base station, consider communication conditions, communication environments and the service band etc. of the other-end of communicating by letter,When being judged as can use other frequency bands time, carry out the expansion of service band. And, in the time of expansion, also can basisThe transmission data attribute (QoS:QualityofService) of priority and the required transmission speed etc. of the communication of terminal roomPreferentially carry out the expansion of frequency of utilization.

Like this, because service band information If is transmitted in specific frequency band (dominant frequency band), so receiver side headFirst, as long as receive this dominant frequency band, do not need to receive other frequency bands and carry out demodulation code. And, by usingExpand frequency band, can further improve the speed of transmission speed, can realize the improvement of efficiency of frequency employment.

[the 2nd embodiment: the dynamic change of dominant frequency band]

The following disclosed some features in this 2nd embodiment at first that represent.

I) make the frequency band that in multiple frequency bands (frequency band 1～frequency band 4), dominant frequency band should occupy pass through in time and can changeBecome,

Ii) judge the quality of the communication environments between communicator (10,20), select among above-mentioned multiple frequency band bestThe frequency band of communication environments or the frequency band that is equivalent to best communication environments be set as dominant frequency band,

Iii) in the time of new settings dominant frequency band, notify in advance the change of this frequency band to the other side's communicator,

Iv) between communicator, use the biography obtaining in response to the pilot channel that has carried out sending or pilot signalThe testing result of defeated quality (CQI), judges the quality of above-mentioned communication environments,

V) the fine or not judgement of this communication environments is carried out successively or simultaneously to all above-mentioned multiple frequency bands,

Vi) also in the control channel under specific frequency band, the fine or not judged result of this communication environments is transferred to the other sideCommunicator.

Usually, the transmission characteristic of control channel is compared data channel, and its transmission quality one is reserved. First, must canSet the circuit that should transmit data by ground. , want to make the transmission quality of the dominant frequency band that comprises control channel than expansion frequencyBe with, need to select the better frequency band of communication environments. So, illustrate according to the quality of communication environments and select freelyBe set as the object lesson of the frequency band of dominant frequency band.

Figure 13 is the flow chart that represents an example of the frequency band that dynamically changes dominant frequency band. And, base station and terminal itBetween basic transmitting-receiving move illustrated the same of the 1st embodiment described above. In addition in this Figure 13, solid linePiece represent respectively the action of base station, the piece of dotted line represents respectively the action of terminal. But being expressed as on the contrary, they do not have yetRelation (for other flow charts described later too).

Step S11: send pilot frequency channel signal at each frequency band.

Step S12: receive all pilot frequency channel signals,

Step S13: calculate each SNR etc. and be converted to CQI,

Step S14: each CQI is transmitted in ascending control channel.

Step S15: receive each CQI,

Step S16: choice for use frequency band, and the change of definite frequency band timing,

Step S17: transmit selected service band and determined change timing in down control channel.

Step S18: receive above-mentioned service band and change timing,

Step S19: change the setting in each circuit part according to above-mentioned change timing,

Step S20: use the dominant frequency band after this change to start to receive action.

And above-mentioned SNR is SignaltoNoiseRatio(signal to noise ratio), CQI is ChannelQualityIndicator(CQI). And be recorded in 3GPP(3rdGenerationPartnership about the definition of CQIProjecthttp: //www.3gpp.org/) TS25.212Release5 etc. in, and their specification is registered inIn http://www.3gpp.org/ftp/Specs/html-info/25-series.htm.

In Figure 13, express an example, variable for dominant frequency band being passed through in time according to above-mentioned flow chartProcess, can for example realize by so below apparatus structure.

Figure 14 A and 14B are the figure that represents the apparatus structure example of the sending side of pilot signal.

Figure 15 A and 15B are the apparatus structure examples of returning to side that represents response (CQI) information for pilot signalFigure.

Structure shown in Figure 14 A and 14B is identical in fact with the structure of above-mentioned Fig. 3 (or Fig. 5), should newly pay close attention toKey element be pilot signal Sp(or the pilot channel of this figure left end) with to this pilot signal Sp and service band letterBreath If carries out multiplexing multiplexing unit (Mux) 71, and, the CQI extraction unit 72 of the latter half of this figure in addition.The structure of+this latter half is identical in fact with the structure of above-mentioned Fig. 4 (or Fig. 6), the inscape that should newly pay close attention toFor the CQI extraction unit 72 of this figure central authorities downside. And in the latter half of this figure, the part of correspondence in Fig. 4To the cross reference number 52,53,54 having used in Fig. 4 ... add 100, be expressed as 152,153,154 ...

Figure 15 A is identical with the structure of above-mentioned Fig. 4 (or Fig. 6) with the structure shown in 15B in addition, should newly pay close attention toInscape is SNR determination part 75, the CQI calculating part 76 of this figure the first half, also has via reentrant pathwayCoding portion 78 and the adder 79 of this figure the latter half after 77. And in this figure the first half, (connect at Fig. 4Receive side) in corresponding part use the cross reference number 52,53,54 having used in Fig. 4 ... represent, alsoTo in the latter half of this figure in Fig. 3 (sending side) corresponding part use the reference number having used in Fig. 3Code 12,37,38 ... add 100, be expressed as 112,137,138 ...

Above-mentioned pilot signal Sp is transmitted with other transmission information multiplexing in practice. This multiplexing methodFor example there are following 2 kinds.

Figure 16 is the figure that represents the 1st multiplexing example of pilot signal.

Figure 17 is the figure that represents the 2nd multiplexing example of pilot signal. And in two figure, " P " represents pilot signal Sp," C " represents above-mentioned communication control information Ict, and " D " represents above-mentioned transmission data Du.

Figure 16 is illustrated in the situation of pilot signals Sp on time orientation, and on the other hand, Figure 17 is illustrated in the timeThe situation of the upper pilot signals Sp of both sides of direction and frequency direction.

Figure 18 is the figure that the dynamic modification of the dominant frequency band of above-mentioned the 2nd embodiment is concisely shown. Time, process was from thisFigure's is upper downward. Follow this time process, dominant frequency band is followed better communication environments, for example, according to " frequency band 1 "The mode transition of → " frequency band 2 " → " frequency band 1 " → " frequency band 4 ".

As mentioned above, base station is in all frequency bands of applying, multiplexing for measuring the signal (pilot tone) of communication environmentsBe used as control channel transmission. And in practice, be also susceptible to the situation that does not comprise transmission data Du. AlsoCan replace pilot signal Sp pilot channel is set.

Terminal is about all frequency bands (frequency band 1～frequency band 4), receives pilot frequency channel signal, measure for example SNR andCIR(CarriertoInterferenceRatio: Carrier interference ratio) etc. reception situation and communication environments, according to this surveyDefinite value is calculated above-mentioned CQI, uses ascending control channel, according to each frequency band successively or simultaneously to base-station transmission.And, also can former state transmit the measurement result of above-mentioned CIR and SNR etc.

The base station of receive ascending control channel signal, CQI being carried out to demodulation code will have in multiple CQIThe frequency band selection of good CQI value is dominant frequency band. The change timing of this selection result and dominant frequency band is equipped on to descending controlChannel processed is to terminal.

Terminal receives this downlink channel control signal and carries out demodulation code, and extracts service band and change regularlyEach information. Then, carry out the change of service band according to this change timing. And, change timing and also can for example lead toCrossing absolute time, relative time or time slot unit determines. And, can also not transmit change timing, by fromThe transmission of downlink channel control signal rises to be delayed after 5 time slots etc., carries out system and fixes.

Above-mentioned middle be dominant frequency band by frequency band selection best communication environments, but also consider due to the situation of other-endCannot select the situation of best frequency band. Can select to be in this case equivalent to its 2nd good frequency band.

And this is in base station one side and carries out the selection of dominant frequency band, but can also select similarly to propagate ring in terminalThe best frequency band in border comes to base-station transmission.

The mensuration of SNR and CIR etc. in terminal is described above, can measure each frequency band simultaneously, also can be according toTime separates setting. And, under the situation waiting continuously at the narrower frequency band of bandwidth, because communication environments can be not significantlyDegree changes, so this situation can only be measured a frequency band. And, this measured value can be measure certain hour itAfter mean value.

In addition, in the 1st embodiment, describe expansion frequency band and only sent transmission data Du, but in order to measure each frequencyThe communication environments of band, also can also send pilot channel or pilot signal except transmission data Du.

In the above description, the transmission to terminal from base station has been described, but the transmission from terminal to base station is on the contrary also sameSample can be suitable for.

As mentioned above, usually the transmission characteristic of control channel must be than the transmission characteristic of data channel in its transmission qualityOn will get well. So the dominant frequency band that comprises control channel need to be selected the good frequency band of communication environments, but by above-mentioned movingDoing, can be dominant frequency band by the frequency band selection that is positioned at best communication environments. And, even communication environments warp in timeCrossing and change, can be also dominant frequency band by the frequency band selection that is positioned at best communication environments all the time.

Thus, not only reduce the error of transmission of control channel information, be also easy to carry out the device setting of receiver side, andCan also improve transmission quality. And then, result from the data transmission times again of error of transmission owing to reducing, soCan make transmission speed more at a high speed.

And then, due to dominant frequency band be set as variable, so can avoid behaviour in service (load) between frequency band noAll, can realize the improvement of frequency service efficiency.

[embodiment 3: the dynamic change of expansion frequency band]

Disclosed some features in this 3rd embodiment are shown first as follows.

I) frequency band that makes to be set as in multiple frequency bands (frequency band 1～frequency band 4) to expand frequency band in time through and can becomeChange,

Ii) judge the quality of the communication environments between communicator (10,20), select among above-mentioned multiple frequency band quiteBe set as expanding frequency band in the frequency band of best communication environments.

Iii) and establishing when radiolink, limit the operable frequency band of this communicator (10,20), at thisDynamic assignment dominant frequency band and expansion frequency band in the frequency band limiting.

Iv) also should be set as in advance the set information of the frequency band of expanding frequency band to the other side's communicator notice, carry out expansion,

V) the associated frequency band set information that receives the frequency band that can expand or can change from the other side's communicator, entersThe change of row expansion frequency band or dominant frequency band,

Vi) also receive the change timing information about the timing of this change.

Vii) also in the control channel under specific frequency band to the fine or not judgement of the other side's communicator transmission communication environmentsAs a result,

Viii) between communicator (10,20), use in response to the pilot channel that has carried out sending or pilot tone letterNumber and the testing result of the transmission quality (CQI) returned judges the quality of communication environments,

Ix) according to this communicator can frequency of utilization, the quality of communication environments under each frequency band, the use of each frequency bandAmong the required transmission speed of situation and data message (Du) at least 1 judge expansion frequency band setting orThe necessity changing,

X) in the time of the above-mentioned expansion frequency band of new settings, notify in advance the change of this frequency band to the other side's communicator.

Figure 19 is the flow chart that represents to expand the importing of frequency band and the 1st example of change.

Figure 20 is the flow chart that represents to expand the importing of frequency band and the 2nd example of change.

Figure 21 is the flow chart that represents to expand the importing of frequency band and the 3rd example of change.

Particularly, Figure 19 represent to use terminal can service band and the CQI of each frequency band select the situation of expansion frequency bandUnder control flow. In addition Figure 20 represent to use this can service band, the behaviour in service of each frequency band and transmission dataRequired transmission speed selects to expand the control flow in the situation of frequency band. And Figure 21 represents to use terminal to useThe required transmission speed of the CQI of frequency band, each frequency band, the behaviour in service of each frequency band and transmission data selects to expand frequency bandSituation under control flow.

In Figure 19,

Step S21: transmission can service band.

Step S22: receiving this can service band,

Step S23: use this can service band, send pilot frequency channel signal.

Step S24: receive all pilot frequency channel signals, then calculate each SNR etc. and be converted to CQI,

Step S25: transmit above-mentioned each CQI in ascending control channel.

Step S26: receive above-mentioned each CQI,

Step S27: select whether to need expansion according to this CQI, when selecting expansion frequency band, determine that it changes timing,

Step S28: transmit this expansion frequency band and change timing in down control channel.

Step S29: receive above-mentioned expansion frequency band and change timing,

Step S30: change the setting of each circuit part according to this change timing,

Step S31: start to receive action in this expansion frequency band after changing.

Follow in Figure 20,

Step S41: transmission can service band.

Step S42: receive above-mentioned can service band,

Step S43: confirm the behaviour in service of each frequency band and the required transmission speed of transmission data Du,

Step S44: select whether to need expansion, when selecting expansion frequency band, determine that it changes timing,

Step S45: transmit this expansion frequency band and change timing in down control channel.

Step S46: receive above-mentioned expansion frequency band and change timing,

Step S47: change the setting of each circuit part according to this change timing,

Step S48: start to receive action in this expansion frequency band after changing.

Then in Figure 21,

Step S51: sending each can service band.

Step S52: receiving this can service band,

Step S53: can send pilot frequency channel signal in service band at this.

Step S54: receive all pilot frequency channel signals, then calculate each SNR etc. and be converted to CQI,

Step S55: transmit above-mentioned each CQI in ascending control channel.

Step S56: receive above-mentioned each CQI,

Step S57: confirm the behaviour in service of each frequency band and the required transmission speed of transmission data Du,

Step S58: select whether to need expansion, when selecting expansion frequency band, determine that it changes timing,

Step S59: transmit this expansion frequency band and change timing in down control channel.

Step S60: receive above-mentioned expansion frequency band and change timing,

Step S61: change the setting of each circuit part according to this change timing,

Step S62: start to receive action in this expansion frequency band after changing.

In this 3rd embodiment, the dynamic change of expansion frequency band is described. Generally (nothing in the time setting circuitWhen line circuit is established), from terminal, to base station, (or base-station control apparatus) transmits the operable frequency band of this terminal.Here it is, and above-mentioned terminal can service band. And imagination is said this situation about can service band notifyingBright, also consider as communication system pre-determined can service band etc. the situation do not notified of situation.

With the situation of above-mentioned the 2nd embodiment similarly, base station receives pilot signal Sp, terminal will receive with thisPilot signal Sp be that the above-mentioned CQI that basic calculation goes out is transferred to base station. Then, making of terminal considered in base stationThe CQI of the each frequency band coming with frequency band, terminal transmission, the behaviour in service of other-end, the data Du's that transmitsRequired transmission speeds etc., judge whether to carry out to this terminal the expansion (change of service band number) of frequency band.

In the situation that expanding, select frequency band. And then, the above-mentioned change timing while selecting expansion service band. SoAfter in control channel, transmit selection information and the above-mentioned change timing of this expansion frequency band. Receive this control channel letterNumber terminal taking the information about expansion frequency band with change timing as basis, change the setting of the each circuit part in terminal,Start afterwards the reception under this expansion frequency band.

To above-mentioned action supplementary notes. Wherein with reference to the control flow of above-mentioned Figure 21. First terminal to base station orThe base-station control apparatus that it is upper etc., send the operable frequency band of this terminal. Receive the base station of this frequency band passableIn the frequency band using, send pilot frequency channel signal or pilot signal Sp. And, when at the shared shared channel of terminalWhen middle transmission pilot frequency channel signal, do not need choice for use frequency band.

Received terminal via the pilot frequency channel signal of each frequency band taking above-mentioned CIR and SNR etc. in basic calculationThe CQI stating, in ascending control channel to this CQI calculated value of base-station transmission. CQI is considered in the base station that receives this valueQoS with the behaviour in service of each frequency band and the required transmission speed of transmission data Du etc., selects whether to need expansion,Choice for use frequency band in the situation that expanding, and the change of definite this frequency band timing etc., down control channel passed throughNotice is to terminal.

The terminal that receives these information is according to above-mentioned change timing setting or each circuit part of setting terminal again,After above-mentioned change timing, in this expansion frequency band after changing, receive.

Figure 22 is the figure that the dynamic modification of the expansion frequency band of this 3rd embodiment is concisely shown. Time through for fromThis figure's is upper downward. Along with this time process, expansion frequency band is selected to be equivalent to the best frequency band of communication environments on one sideGood frequency band, on one side each produce expansion while needing according to figure in illustrative " frequency band 2 " → " frequency band 2+ frequency band3+ frequency band 4 " mode set. Can also as the latter, combine multiple band settings for expansion frequency band.

Like this, even for the above communication environments of change of time, also can be by good communication environments frequency band selectionFor expansion frequency band. Thus, the error of transmission of control channel information reduces, and is easy to carry out the device mensuration of receiver side, andAnd can improve transmission quality. And then, owing to can reducing the transmission times again of data, so can improve transmission speedDegree. Also consider the processing time for setting in receiver side correction, by notify in advance the change of expansion frequency band to the other side,Thereby be easy to device to change above-mentioned setting.

[the 4th embodiment: the dynamic change of dominant frequency band and expansion frequency band]

The disclosed feature of this 4th embodiment is shown first below.

I) make in frequency band that the dominant frequency band in multiple frequency bands (frequency band 1～frequency band 4) should occupy and the plurality of frequency bandThese both sides of frequency band that expansion frequency band should occupy pass through in time and can change in the situation that not overlapping each other,

Ii) can also change 1 dominant frequency band and at least 1 expansion frequency band simultaneously.

Figure 23 is the flow chart that represents the both sides' that change dominant frequency band and expansion frequency band a example.

In this figure,

Step S71: transmission can service band.

Step S72: receiving this can service band,

Step S73: use this can service band, send pilot frequency channel signal.

Step S74: receive all pilot frequency channel signals, calculate each SNR etc. and change to CQI,

Step S75: transmit above-mentioned each CQI in ascending control channel.

Step S76: receive above-mentioned each CQI,

Step S77: select dominant frequency band, the i.e. best frequency band of communication environments,

Step S78: select again expansion frequency band, i.e. communication environments time good frequency band,

Step S79: in down control channel, transmit above-mentioned expansion frequency band and its change timing,

Step S80: select this change timing.

Step S81: receive above-mentioned expansion frequency band and change timing,

Step S82: change the setting of each circuit part according to this change timing,

Step S83: start to receive action in this expansion frequency band after changing.

To the control flow supplementary notes of Figure 23,, establish according to the required transmission speed of transmission data Du respectively hereinSelect 1 dominant frequency band and expansion frequency band (with reference to Figure 24). Above-mentioned CQI in the each frequency band coming taking terminal transmission is as basePlinth is dominant frequency band by frequency band selection best communication environments. Then by the frequency band choosing of communication environments time good (second best)Be selected as expansion frequency band. Then select to change timing, via control channel, they are transferred to the other side.

The terminal that receives service band information (dominant frequency band and expansion frequency band both sides) and change timing information is according to thisAfter change timing has changed the setting of receiver side circuit part, receive dominant frequency band and these both sides' of expansion frequency band signal.

Figure 24 is the stream that the dominant frequency band in present embodiment 4 is concisely shown and expands the both sides' of frequency band dynamic modificationCheng Tu. Time process is for downward from this figure. As illustrated in this figure, be accompanied by dominant frequency band and be set to " frequentlyBe with 1 " → " frequency band 1 " → " frequency band 3 " → " frequency band 2 ", left and right (this figure of expansion frequency band and this dominant frequency bandLeft side or right side) a certain side be set in couples. Wherein, two frequency bands without paired all the time, for example, are had in mindThe third level in figure, also has the situation that does not have this expansion frequency band (frequency band 4), and is for example conceived in figure the 4thLevel, this expansion frequency band also can spaced apartly be present in the frequency band 4 of its right adjacent, instead of illustrated frequency band 3In.

As mentioned above, can be that best and inferior good frequency band is respectively as dominant frequency band and expansion frequency band using communication environments. SeparatelyOutward, even if the variation of communication environments time of origin can be also that best and inferior good frequency band is chosen as respectively by communication environmentsDominant frequency band and expansion frequency band.

Thus, with above-mentioned embodiment similarly, the error of transmission of control channel information reduces, and is easy to carry out receiver sideDevice set, and can improve transmission quality. And then, owing to also can reducing the transmission times again of data, instituteCan improve transmission speed. Also consider the processing time for setting in receiver side correction, by advance to square tubeKnow the change of dominant frequency band and expansion frequency band, set thereby be easy to modifier.

[the 5th embodiment: select dominant frequency band and expansion frequency band according to communication environments]

First represent the disclosed feature of this 5th embodiment.

I) the each propagation communicating respectively between device (10,20) to multiple frequency bands (frequency band 1～frequency band 4)The quality judgement of environment, is transferred to respectively the other side's communicator by this judged result according to each frequency band,

Ii) or to the each of multiple frequency bands (frequency band 1～frequency band 4) communicate respectively between device (10,20)The quality judgement of communication environments, is transferred to the other side by multiplexing the judged result separately of the frequency band about all collectingCommunicator,

Iii) some to the other side's dress of communicating by letter with in dominant frequency band, the expansion frequency band frequency band better with communication environmentsPut the above-mentioned judged result of transmission.

The structure example of above-mentioned Figure 15 can be used in order to implement this 5th embodiment, or Figure 25 can be usedStructure example.

Figure 25 is the figure that represents the apparatus structure example of returning to side of response (CQI) information for pilot signal. ThisThe structure example of figure and the structure example of above-mentioned Figure 15 are approximate, and its difference is, is with many in the latter half of Figure 15Indivedual processing of each correspondence of individual frequency band, enter each CQI of multiple frequency bands and be configured in the latter half of Figure 25Row is multiplexing collects processing. That is, in Figure 25, in a control channel, send transmission quality (CQI) to the other side, forThis multiplexing unit (Mux) 80 is imported into the outlet side of reentrant pathway 72.

In the respective embodiments described above, by the CQI of each frequency band during from terminal transmission to base station, can be at each frequencyIn the ascending control channel of band, transmit, can also for example in the ascending control channel of dominant frequency band, transmit the each of all frequency bandsCQI。

While using the ascending control channel transmission CQI of each frequency band, use the structure example of Figure 15. And, at this knotIn structure example, uplink transmission data Du is not described, but also can be by these data Du multiplexing transmission to control channel.And this structure example has been imagined the situation that receives pilot frequency channel signal for multiple frequency bands simultaneously.

In the terminal shown in Figure 15, receive the signal of each frequency band, carry out frequency inverted corresponding to frequency band separately.Remove portion 54 at GI afterwards and remove GI, carry out frequency-time by S/P portion 55, FFT portion 56 and P/S portion 57Between conversion, demodulation in demodulation section 23 afterwards. After the propagation state of SNR and CIR etc. that used this signal measuring,Calculate CQI value.

The above-mentioned CQI value calculating according to each frequency band is transmitted respectively in the control channel of frequency band separately. ThisTime, can also transmit in the lump other control channel signal. Can also transmit in the lump uplink transmission data.

The above-mentioned CQI calculating enters in the latter half of Figure 15, in coding portion 78 in reentrant pathway 77Encoded, in modulation portion 112, carried out after modulation, by S/P portion 137, IFFT portion 138 and P/S portion 139Carry out T/F conversion. Then in GI insertion section 140, insert GI, be converted to respectively corresponding frequency band andBy antenna, AT sends.

As mentioned above, with above-mentioned embodiment similarly, can be to the CQI(status transmission of the each frequency band of base-station transmission).In addition, the CQI(status transmission that can send here taking terminal) as basis, be dominant frequency by frequency band selection good communication environmentsBand. Similarly, can be expansion frequency band by good communication environments frequency band selection. Like this, same with above-mentioned embodimentSample, can be by selecting better frequency band to improve transmission characteristic, also owing to having reduced the number of times again sending of data,So also can improve transmission speed.

Next the situation of transmitting all CQI about the ascending control channel that uses specific frequency band, adopts above-mentionedThe structure example of Figure 25. Use the situation of ascending control channel identical with above-mentioned according to each frequency band, calculate each frequency bandUnder CQI. In above-mentioned multiplexing unit (Mux) 80, these result of calculations being collected is after one, in coding portionIn 78, encode. Then in modulation portion 112, carried out after modulation, by S/P portion 137, IFFT portion 138Carry out T/F conversion with P/S portion 139, then in GI insertion section 140, insert GI. Pass through afterwards circuit141,142 carry out frequency inverted and send from antenna AT.

And, can be to be chosen as the good dominant frequency band of transmission environment for the frequency band of the transmission of used CQI,The frequency band of transmission environment best (CQI is best) can also be selected, other frequency bands can also be selected. In addition, also canUse the frequency band that is set in advance communication system.

As mentioned above, with above-mentioned embodiment similarly, can be to the CQI(status transmission of the each frequency band of base-station transmission).In addition, the CQI(status transmission that can send here taking terminal) as basis, be dominant frequency by frequency band selection good communication environmentsBand. Similarly, can be expansion frequency band by frequency band selection good communication environments. Like this, can be by selecting betterFrequency band improves transmission characteristic, also owing to having reduced the number of times again sending of data, so can improve transmission speed.

[the 6th embodiment: the high efficiency of transmission of service band information]

The 6th embodiment is disclosed is characterised in that for this, for each of multiple frequency bands (frequency band 1～frequency band 4),Will be (i) frequency band identification number, (ii) use/do not use, (iii) use/do not make as expansion frequency band as dominant frequency bandWith with each information during (iv) present situation maintains (dress of communicating by letter of at least 1 the other side that encodes and be transferred in i～iv)Put.

Figure 26 is the figure that represents the table of the high efficiency of transmission for service band information is described. Table 1 represent service band-Frequently an example of with number correspondence, table 2 and table 3, for service band-use/untapped establishing method, divideThe 1st example and the 2nd example is not shown.

In the transmission of the above-mentioned service band information of the respective embodiments described above, for example, by bandwidth assignment number is passedDefeated this number, thus the situation of comparing transmission frequency value itself can be cut down control channel information content. Use above-mentioned table1～table 3 illustrates object lesson. And express herein and establish the frequency band that can use be in communication system entirety800[MHz]～820[MHz], be divided into as shown in Figure 9 the example that 4 frequency bands use.

First, the allocated frequency band number (1,2,3,4) respectively of the each frequency band shown in his-and-hers watches 1. Then according to table 2 thatSample is set which frequency band is used as to dominant frequency band, and which frequency band is used as to expansion frequency band (or not using).

Be for example now " not using " at frequency band 1, frequency band 2, as " dominant frequency band ", is used as to " expansion by frequency band 3Frequency band ", when frequency band 4 is " do not use ", become below such control data " yy1100zz ", herein yy andZz is " 01 " or " 10 ".

And, although herein according to the sequentially built of frequency band 1, frequency band 2, frequency band 3, frequency band 4 above-mentioned control numberAccording to, but as long as this order can be identified in sending side and receiver side, which kind of order can. But also canThe quantity of increase and decrease frequency band arbitrarily. And then, although for example understand the frequency band of continuous 4 herein, can be also in transitIn there is the not discontinuous frequency band of service band.

As mentioned above, by encode (list), compare the value of the centre frequency of for example transmission band itselfSituation, can cut down information content.

And then as shown in table 3, can also be arranged on situation that behaviour in service do not change, the i.e. feelings of " present situation maintains "Setting under condition.

As mentioned above, by service band information is encoded (list), data that can compression control signalLength. Therefore, in the latter, reduced the ratio of transmission data and control channel information, thereby the transmission of transmission dataEfficiency improves.

[the 7th embodiment: continuous setting and the discontinuous setting of expansion frequency band]

The disclosed feature of this 7th embodiment is shown first below.

I) 1 expansion frequency band or 2 above continuous expansion frequency bands are distributed to and dominant frequency band on frequency axisContinuous frequency band,

Ii) or on said frequencies axle, also comprise and all discontinuous isolated expansion frequency bands of all expansion frequency bands,

Iii) it is right to be transferred to for the partial insertion junk of not service band of following above-mentioned isolated expansion frequency bandSquare tube T unit. And, as the figure of this 7th embodiment of optimal representation, there is Figure 27 and above-mentioned Figure 22.

Figure 27 is the figure that represents the dynamic modification of expanding frequency band, and above-mentioned Figure 22 represents to select continuous expansion frequency bandSituation, on the other hand, Figure 27 represents to carry out the selection (with reference to the 4th section of this figure) of discontinuous expansion frequency bandSituation. And the view of Figure 27 and the view of above-mentioned Figure 22 identical. Illustrate below.

First the continuous situation of explanation expansion frequency band, above-mentioned Figure 22 has represented the situation of expansion frequency band continuous selected.Wherein as an example, expressed by with dominant frequency band in pairs continuous frequency band selection be the situation of expansion frequency band. ?In the mode of this Figure 22, owing to expanding, frequency band and dominant frequency band are continuous, thus compare discontinuous situation (Figure 27),It is convenient that signal processing becomes. And, about sending action with receive action, and illustrate in above-mentioned each embodimentIdentical.

On the other hand, in Figure 27, represented as mentioned above the discontinuous situation of expansion frequency band (the 4th section). Like this,Can according to terminal can service band, communication environments and with other the compatibility of terminal, come dominant frequency band or phaseAdjacent expansion frequency band selects to expand frequency band discontinuously.

And, in explanation so far, do not set the subcarrier of crossing over continuous frequency band (with reference to the dotted line of Figure 22SC), but according to the behaviour in service of other-end, the subcarrier of crossing over 2 frequency bands also can be set and correspondingly increaseAdd transmission information amount.

In addition, in receiver side terminal, the signal that becomes above-mentioned discontinuous frequency band does not receive, or by this letterNumber process forcibly as junk. Thus, even if expansion frequency band is discontinuous, also can be without hindranceReceive.

As mentioned above, by setting discontinuous expansion frequency band, can consider terminal can service band, communication environmentsSelect neatly to expand frequency band with the behaviour in service of other-end. And can make thus frequency service efficiency more carryHigh.

[the 8th embodiment: make the subcarrier number in each frequency band constant]

The 8th embodiment is disclosed is characterised in that for this, makes the bandwidth separately of multiple frequency bands (frequency band 1～frequency band 4)For the steady state value of regulation, and the quantity of a series of subcarrier in frequency band is separately also the steady state value of regulation.

Figure 28 is the figure that represents the 1st example of frequency band expansion mode.

Figure 29 is the figure that represents the 2nd example of frequency band expansion mode.

Figure 30 is the figure that represents the 3rd example of frequency band expansion mode.

And the view of the view of these Figure 28～Figure 30 and above-mentioned Figure 22 and Figure 24 and Figure 27 etc. is about the same,In Figure 22, Figure 24, Figure 27 etc., use actual waveform to represent, on the other hand, in Figure 28～Figure 30Replace the waveform of that reality and only represent as the piece of subcarrier. This is for ease of this 8th enforcement side of explanationFormula. , be easy to visually represent " band unit " this concept with understanding. And, in Figure 28～Figure 30Term used all illustrated except " processing delay ". This what is called processing delay, for example, with reference to Fig. 4,Mean after service band information If is imported into service band configuration part 25, generated band setting indication letterThe required time delay of processing till the setting parameter that number Sb is through with in each circuit part again.

Usually using the such a series of pair of multicarrier transmission mode (QFDM and MC-CDMA etc.) to carryIn the communication mode of ripple, while carrying out the change of bandwidth, it is very common changing with subcarrier unit. Now, mustMust set use/not use with subcarrier unit. In addition, no matter, in transmission processing or reception & disposal, all needRecognize use/untapped signal processing with subcarrier unit, likely can make the setting of frequency band becomeNumerous and diverse and complicated. And then carrying out user multiplexing in the situation that, between user, produce control the use of each subcarrier/Untapped needs, its result, causes the reduction of frequency service efficiency.

So in this 8th embodiment, communication system entirety can be divided into multiple frequency band (frequency bands by service band1～frequency band 4), on the basis of " quantity of subcarrier is constant " in each frequency band that this is cut apart, make simultaneouslyWith the transmission between one or more frequency bands for communication device. Thus, can realize the improvement of frequency service efficiency.

Particularly, for example establishing a frequency band is 5[MHz], the subcarrier number in this frequency band is 25. Set multipleThis frequency band, makes above-mentioned service band variable with band unit. In above-mentioned Figure 28～Figure 30, represent band unitUnder the object lesson of frequency band expansion. The transverse axis of each figure represents bandwidth, and a piece that has applied hachure represents a frequencyBand, is located in this frequency band and has inserted multiple subcarriers. Think with Fig. 9 similarly from the left side for frequency band 1,Frequency band 2, frequency band 3, frequency band 4.

In Figure 28, represent the situation using frequency band 1 as dominant frequency band, in Figure 29, represent using frequency band 2 as dominant frequency bandSituation. And in Figure 30, represent in time through and change the example of setting of expansion frequency band, and, representComprise that its expansion frequency band is discontinuous situation (with reference to the 6th period). And the concrete action of transmitting-receiving is as above-mentioned enforcementDescribed in mode.

As mentioned above, can easily make service band variable, and can put forward high-frequency service efficiency. Compare withSubcarrier unit makes the variable situation of service band, and above-mentioned transmitting-receiving action becomes more easy, and the knot of transceiverIt is simple that structure also becomes.

[the 9th embodiment: it is constant making the subcarrier number in each frequency band together with subcarrier bandwidth]

The disclosed feature of this 9th embodiment is as follows.

I) making each bandwidth of multiple frequency bands (frequency band 1～frequency band 4) is the steady state value of regulation, and makes frequency band separatelyThe bandwidth of interior each subcarrier is the steady state value for specifying also.

Ii) and then, the quantity of each subcarrier also for regulation steady state value. Thus, can be easy to set with band unitDominant frequency band and expansion frequency band.

In above-mentioned the 8th embodiment, the number of the subcarrier of every frequency band is constant, but in this 9th embodimentThe bandwidth of each subcarrier is also constant.

Its result, the mutual difference of frequency band is only in center frequency value separately. Thus, base band signal process withFrequency band, independently by homogenization, is compared the 8th embodiment, and the structure of transceiver is more easy.

[the 10th embodiment: the setting of the frequency band of the difference based on required transmission speed and actual transmission speed]

The disclosed feature of this 10th embodiment is as follows.

I) in order to judge needs/do not need to expand frequency band, calculate the needed required transmission speed S1 of anticipation information exchangePoor (S1-S2) of the actual transmission speed S2 reaching with reality, according to this difference positive and negative judge respectively need andDo not need to expand frequency band,

Ii) herein, above-mentioned actual transmission speed is the transmission data that calculate by the quantity of the frequency band from usedThe transmission interval of the quantity of information and this transmission data message is obtained.

Figure 31 is the figure of the structure example of the communicator (sending side) that represents the 10th embodiment.

Figure 32 is the flow chart that represents the action case of the device of Figure 31.

First with reference to Figure 31, the structure of Ben Tu and above-mentioned Fig. 5 (Fig. 3 too) is almost identical, is just importingThe distortion of frequency band selection/configuration part 85(15 shown in this figure left end) and actual transmission speed calculating part 86 these aspects onDifferent.

Then with reference to Figure 32, this action is,

Step S91: confirm required transmission speed,

Step S92: confirm to send data volume,

Step S93: calculate actual transmission speed.

Step S94: judge whether to be necessary that taking each velocity amplitude of step S91 and step S93 expansion is used frequently as basisBand, setting tool has this necessity.

Step S95: select expansion frequency band, and determine change timing,

Step S96: transmit this expansion frequency band and its change timing in down control channel.

Step S97: receive above-mentioned expansion frequency band and change timing,

Step S98: change the setting of each circuit part according to this change timing,

Step S99: start to receive in expansion frequency band after changing.

Specifically describe again, in above-mentioned the 1st embodiment, only taking required transmission speed as basis, determine that expansion frequentlyThe use/do not use of band and expand the quantity of frequency band, and in this 8th embodiment, also consider actual realityThe difference of transmission speed and required transmission speed is carried out the expansion of frequency band or is dwindled.

Re-use Figure 31 and Figure 32 illustrates concrete example. And the omission part identical with the 1st embodiment.

If the required transmission speed Rd of certain transmission data Du is 10[Mbps], use dominant frequency band and expansion frequency band to carry outTransmission. Now, according to the quantity of the transmission data that calculate from the quantity of service band and transmission interval thereof, canCalculate actual actual transmission speed Ra with the actual transmission speed calculating part 86 of Figure 31. In above-mentioned selection/configuration partRelatively this actual transmission speed Ra and required transmission speed Rd in 85 increase and (expand in the time that actual transmission speed Ra is lower) service band. In addition, for example, ought be judged as actual transmission speed Ra and significantly exceed required transmission speed Rd,Even when having reduced service band and also required transmission speed Rd can being maintained, cut down (dwindling) service band.

As mentioned above, can both meet required transmission speed, realize again the raising of frequency service efficiency. And, exceptOutside said method, can also return to from the data of base-station transmission whether be transferred to terminal to base station(ACK/NACK), calculate based on this actual transmission speed, make service band variable. In addition, in terminal alsoCan be taking the data volume from base-station transmission as basic calculation transmission speed, and return to base station, use taking this value as basisFrequency band is variable.

[the 11st embodiment: the expansion of service band]

Figure 33 is the figure for this 11st embodiment is described, the part should be noted that is especially " frequency band in restriction "" the whole frequency band after lifting restrictions ". The disclosed feature of this 11st embodiment is shown herein as follows.

I) come at communicator (10,20) mutual at the multicarrier transmission mode by under a series of subcarrierIn the communication system of the exchange of the information of carrying out, whole frequency band (the reference figure of this communication system will should distributed to from now on33 " the whole frequency band after lifting restrictions ") cut apart and multiple dividing frequencybands of forming (frequency band a～frequency band d) in,Current allows to use the situation (with reference to " frequency band in restriction ") of its a part of dividing frequencyband (" frequency band a ")Under, will allow the dividing frequencyband " frequency band a " of this use to be further divided into 1 or multiple frequency band (as the 1st～10th realExecute the frequency band 1～frequency band 4 in mode) use, and for each in current confined other cut apartFrequency band (frequency band b, frequency band c, frequency band d), is divided into 1 or multiple frequency band (as the 1st～10th real similarlyExecute the frequency band 1～frequency band 4 of mode). Then,, in the time having removed this restriction from now on, form for cutting apart whole frequency bandCurrent untapped multiple dividing frequencybands (d) each of frequency band b～frequency band, immediately application with by above-mentioned currentThe dividing frequencyband that is allowed to use (frequency band a) is divided into 1 or multiple frequency band and uses identical utilization,

Ii) (frequency band a～frequency band is mutual tool d) for the multiple dividing frequencybands that here, above-mentioned whole dividing frequency band formedHave constant bandwidth, and quantity and the bandwidth of subcarrier in this each dividing frequencyband has steady state value mutually.

Specifically describe again, according to the compatibility of other communication systems, this communication system (or base station) can be usedFrequency band be limited, afterwards, transfer to the reason of elsewhere etc. by the frequency of utilization of above-mentioned other communication systems, having canCan there is removing the situation of this restriction.

While imagining this situation, by the service band in above-mentioned restriction (" the frequency band a in restriction ") and above-mentioned enforcement sideFormula is similarly divided into one or more frequency band and uses. And now, by confined frequency band (frequency band b, frequentlyBand c, frequency band d), are also divided into respectively one or more frequency band. And, preferably cut apart and can use with same band((frequency band b～frequency band d) for the each frequency band of frequency band a) and in restriction for frequency band. Figure 33 comes with same band like thisCut apart. And in Figure 33, service band is restricted to frequency band a and uses as a frequency band, will limitDividing frequency band in system is that 3 frequency bands are (frequency band b～frequency band d), but because restriction makes these frequency bands b～d currentCannot use. And preferably the subcarrier number in these frequency bands and subcarrier bandwidth are constant.

And due in restriction, establish frequency band be one (frequency band a), so cannot expand service band. According to basis the 11stEmbodiment, is removing after above-mentioned restriction, and service band is 4 (frequency band a～d), can transfer to immediatelyIn the utilization of above-mentioned embodiment.

By setting frequency band described above, thereby although current service band is limited, while having removed restriction afterwards,Can shift immediately by system employs of the present invention. It can realize the utilization flexibly of communication system.

As above describe in detail, according to the present invention, can be easy to make service band adaptive-bandwidth, also thus can be significantlyImprove the service efficiency of frequency.

According to an aspect of the present invention, provide a kind of communicator, this communicator is accommodated in and uses based on a series ofThe multicarrier transmission mode of subcarrier carry out each other in the communication system of information exchange at communicator, its feature existsIn, from setting frequently specific in multiple frequency bands of forming to being assigned to that whole frequency band this communication system is cut apartBand, transmits service band information with this specific frequency band, and described service band information is used for determining in above-mentioned communicationWhich of remaining this frequency band device should use each other.

According to another aspect of the present invention, be the dominant frequency band in above-mentioned whole frequency band by above-mentioned specific band setting,This dominant frequency band is gone back transmitting data information except above-mentioned service band information.

According to another aspect of the present invention, set by removing in the frequency band outside above-mentioned dominant frequency band in above-mentioned multiple frequency bandsAt least 1 fixed frequency band is as expansion frequency band, and this expansion frequency band mainly transmits further data message.

According to another aspect of the present invention, above-mentioned dominant frequency band is in the time that the mutual radiolink of above-mentioned communicator is establishedSet regularly.

According to another aspect of the present invention, in the time thering is multiple above-mentioned communicator, every in above-mentioned multiple frequency bandsA difference is set above-mentioned dominant frequency band separately, and distributes each should corresponding to each in the plurality of communicatorDominant frequency band.

According to another aspect of the present invention, 2 above-mentioned communicators are above answered by time-multiplexed and/or extended codeWith, use same above-mentioned dominant frequency band simultaneously.

According to another aspect of the present invention, increase and decrease above-mentioned expansion frequently according to the required transmission speed of above-mentioned data messageThe quantity of band.

According to another aspect of the present invention, make frequency band that the above-mentioned dominant frequency band in above-mentioned multiple frequency band should occupy at any timeBetween through and can change.

According to another aspect of the present invention, judge the quality of the communication environments between above-mentioned communicator, select above-mentionedIn multiple frequency bands, the frequency band of best communication environments or the frequency band that is equivalent to best communication environments are set as above-mentionedDominant frequency band.

According to another aspect of the present invention, in the time of the above-mentioned dominant frequency band of new settings, in advance should to the other side's communicator noticeThe change of frequency band.

According to another aspect of the present invention, between above-mentioned communicator, use in response to the pilot tone letter that has carried out sendingThe testing result of the transmission quality that road or pilot signal obtain, judges the quality of above-mentioned communication environments.

According to another aspect of the present invention, the fine or not judgement of above-mentioned communication environments is that all above-mentioned multiple frequency bands are complied withInferior or carry out simultaneously.

According to another aspect of the present invention, the fine or not judged result of above-mentioned communication environments is passed through to specific above-mentioned frequencyControl channel under band is transferred to the other side's communicator.

According to another aspect of the present invention, the frequency band that makes to be set as in above-mentioned multiple frequency band above-mentioned expansion frequency band in timePass through and can change.

According to another aspect of the present invention, judge the quality of the communication environments between above-mentioned communicator, select above-mentionedThe frequency band that is equivalent to best communication environments in multiple frequency bands is set as above-mentioned expansion frequency band.

According to another aspect of the present invention, in the time that radiolink is established, limit the operable frequency band of this communicator,The above-mentioned dominant frequency band of dynamic assignment and expansion frequency band in the frequency band that this limits.

The set information that according to another aspect of the present invention, should be set as the frequency band of above-mentioned expansion frequency band is given advance noticeGive the other side's communicator to carry out expansion.

According to another aspect of the present invention, from the other side's communicator receive with can carry out above-mentioned expansion frequency band or canWith the relevant band setting information of frequency band changing, carry out the change of above-mentioned expansion frequency band or dominant frequency band.

According to another aspect of the present invention, also receive the change timing information relevant to the timing of above-mentioned change.

According to another aspect of the present invention, the fine or not judged result of above-mentioned communication environments is passed through to specific above-mentioned frequencyControl channel under band is transferred to the other side's communicator.

According to another aspect of the present invention, between above-mentioned communicator, use in response to the pilot tone letter that has carried out sendingRoad or pilot signal and the testing result of the transmission quality returned, judge the quality of above-mentioned communication environments.

According to another aspect of the present invention, according to this communicator can frequency of utilization, biography under each above-mentioned frequency bandBroadcast at least 1 among quality, the behaviour in service of each this frequency band and the required transmission speed of above-mentioned data message of environmentIndividual, judge the necessity of setting or the change of above-mentioned expansion frequency band.

According to another aspect of the present invention, in the time of the above-mentioned expansion frequency band of new settings, notify to the other side's communicator in advanceThe change of this frequency band.

According to another aspect of the present invention, the frequency band and this that the above-mentioned dominant frequency band in above-mentioned multiple frequency band should be occupiedThese both sides of frequency band that above-mentioned expansion frequency band in multiple frequency bands should occupy do not overlap each other, and pass through in time and passableChange.

According to another aspect of the present invention, change 1 above-mentioned dominant frequency band and at least 1 above-mentioned expansion frequency band simultaneously.

According to another aspect of the present invention, each of above-mentioned multiple frequency bands is carried out respectively between above-mentioned communicatorThe quality judgement of above-mentioned communication environments, is transferred to respectively the other side's communicator by this judged result according to each this frequency band.

According to another aspect of the present invention, each of above-mentioned multiple frequency bands is carried out respectively between above-mentioned communicatorThe quality judgement of above-mentioned communication environments, collects transmission by multiplexing the judged result separately of this frequency band about allGive the other side's communicator.

According to another aspect of the present invention, use good upper of above-mentioned dominant frequency band, above-mentioned expansion frequency band and communication environmentsState some in frequency band and transmit above-mentioned judged result to above-mentioned the other side's communicator.

According to another aspect of the present invention, about each in above-mentioned multiple frequency bands, to frequency band identification number, makeWith/do not use for above-mentioned dominant frequency band, use/do not use in above-mentioned expansion frequency band and the present situation each information in maintaining extremelyEncode, and be transferred to the other side's communicator for few 1.

According to another aspect of the present invention, by 1 above-mentioned expansion frequency band or 2 above these continuous expansions frequenciesBand is distributed to the above-mentioned frequency band continuous with above-mentioned dominant frequency band on frequency axis.

According to another aspect of the present invention, on said frequencies axle, also comprise with above-mentioned expansion frequency band any one allDiscontinuous isolated expansion frequency band.

According to another aspect of the present invention, for the partial insertion of not service band of following above-mentioned isolated expansion frequency bandJunk is transferred to the other side's communicator.

According to another aspect of the present invention, each bandwidth that makes above-mentioned multiple frequency bands is the steady state value of regulation, and makesThe also steady state value for specifying of the quantity of the above-mentioned a series of subcarrier in frequency band separately.

According to another aspect of the present invention, each bandwidth that makes above-mentioned multiple frequency bands is the steady state value of regulation, and makesThe also steady state value for specifying of the bandwidth of each the above-mentioned subcarrier in frequency band separately.

According to another aspect of the present invention, and the quantity of each above-mentioned subcarrier also for regulation steady state value.

According to another aspect of the present invention, in order to judge the above-mentioned expansion frequency band of needs/do not need, calculate anticipation above-mentionedPoor (S1-S2) of the needed required transmission speed S1 of information exchange and the actual actual transmission speed S2 reaching,Judge respectively needs and do not need this expansion frequency band according to the positive and negative of this difference.

According to another aspect of the present invention, above-mentioned actual transmission speed is by the quantity of the above-mentioned frequency band from usedThe quantity of the transmission data message calculating and the transmission interval of this transmission data message are obtained.

According to another aspect of the present invention, also provide a kind of communication system, this communication system is used based on a series ofThe multicarrier transmission mode of subcarrier carries out the exchange of information each other at communicator, it is characterized in that, will be from now onIn the multiple dividing frequencybands that should distribute to the whole dividing frequency band of this communication system and form, current allows to use itIn the situation of dividing frequencyband of a part, the dividing frequencyband that allows this use is further divided into 1 or multiple frequency band and entersRow uses, and for current confined other each of above-mentioned dividing frequencyband, be divided into similarly 1 orThe multiple frequency bands of person, in the time having removed this restriction from now on, what form for cutting apart above-mentioned whole frequency band is current untappedEach of above-mentioned multiple dividing frequencybands, is suitable for immediately and the above-mentioned current dividing frequencyband that is allowed to use is divided into 1Individual or multiple frequency bands use identical utilization.

According to another aspect of the present invention, the multiple dividing frequencybands that above-mentioned whole dividing frequency band formed have mutuallyConstant bandwidth, and quantity and the bandwidth of above-mentioned subcarrier in this each dividing frequencyband have steady state value mutually.

Claims (3)

1. a communicator, this communicator be accommodated in multicarrier transmission mode by using multiple subcarriers andTime-multiplexedly carry out each other, in the mobile radio system of information exchange, it is characterized in that at communicator, above-mentionedCommunicator comprises:

Receiver, it is corresponding reception that this receiver is configured to use the multiple frequency bands from distributing to above-mentioned communication systemThe specific frequency band that device is selected receives service band information, above-mentioned service band information instruction service band, this useFrequency band comprises at least one frequency band beyond above-mentioned specific frequency band, and above-mentioned service band is used in above-mentioned communicator phaseMutually, carry out the sending and receiving of data message;

Wherein, after above-mentioned receiver receives above-mentioned service band information, above-mentioned communicator uses above-mentioned useThe service band receiving data information that band information is indicated also sends data message.

2. communicator according to claim 1, wherein, receives above-mentioned service band at above-mentioned receiverAfter information, above-mentioned receiver uses above-mentioned specific frequency band and the indicated service band two of above-mentioned service band informationPerson carrys out receiving data information.

3. a mobile radio system, this communication system is by being used the multicarrier transmission mode of multiple subcarriersAnd time-multiplexedly between base station and movement station, carry out information exchange, above-mentioned mobile radio system comprises:

Base station, this base station is configured to generate service band information, this service band information instruction service band, this makesComprise at least one frequency band beyond specific frequency band with frequency band, above-mentioned base station is configured to use from distributing to above-mentioned logicalThe specific frequency band of selecting for corresponding movement station in multiple frequency bands of communication system sends above-mentioned service band information, above-mentionedService band for carrying out the sending and receiving of data message between base station and movement station; And

Movement station, this movement station is configured to use above-mentioned specific frequency band to receive above-mentioned service band letter from above-mentioned base stationBreath, above-mentioned movement station is configured to use the indicated service band of service band information receiving from above-mentioned base station to connectReceive and send data message.