CN103260213B - Communicator based on multicarrier transmission mode and communication system - Google Patents

Abstract

The present invention provides a kind of communicator based on multicarrier transmission mode and communication system.This communicator is accommodated in and enters each other in the communication system of row information exchange in communicator by using the multicarrier transmission mode of a series of subcarrier, and above-mentioned communicator includes：Sending data generating section, this sending data generating section generates service band information, the service band that the instruction of this service band information selects from multiple frequency bands that the whole frequency band being assigned to this communication system is split and constituted, above-mentioned service band is used for carrying out the transmission of data message each other in above-mentioned communicator；Wherein, above-mentioned communicator to send above-mentioned service band information by using the special frequency band setting from above-mentioned multiple frequency bands, wherein, so that above-mentioned special frequency band is passed through in time and can change, for switching to another frequency band in above-mentioned multiple frequency band.

Description

Communicator based on multicarrier transmission mode and communication system

The application is to be on October 29th, 2004 applying date, and (international application no is for Application No. 200480044327.3 PCT/JP2004/016154), the patent Shen of invention entitled " communicator based on multicarrier transmission mode and communication system " Divisional application please.

Technical field

The present invention relates to carrying out each other in communicator by using the multicarrier transmission mode of a series of subcarrier The communication system of the exchange of information (data), particularly to the communicator being accommodated in this communication system.

Background technology

The above-mentioned communication system discussed as the present invention, a most preferred example is mobile body communication system, after Explanation illustrate taking this mobile body communication system as a example.Therefore, if according to this example, above-mentioned communicator is (i) Base station (or its upper base-station control apparatus), and be (ii) movement station (mobile terminal of PDA etc.).And, for side Just, sometimes the former (i) is referred to as " base station " in explanation below, the latter (ii) is simply referred to as " terminal ".Wherein, after passing through The narration in face is learnt, the present invention not only can apply to above-mentioned base station moreover it is possible to be applied to above-mentioned terminal substantially samely it is not necessary that Both intended distinction.

Transmission speed in mobile body communication system it is ensured that needed for user is very big class in terms of providing this service Topic.On the other hand, the service band that mobile body communication system is used generally is fixed according to each system, even if so adopting User's multiplexing etc., its maximum transfer speed also limited.Therefore, inquiring into and neatly changed according to required transmission speed The method of above-mentioned service band.

And, in the case of integrally being considered with mobile body communication system, behaviour in service is according to each use frequency above-mentioned Band and different, sometimes produce the problem that this frequency band cannot be used completely.Therefore, from the viewpoint of the effectively utilizes of frequency, Also inquiring into the technology making service band variable.

In this condition it is proposed that in MC (Multi-Carrier)-CDMA (Code Division Multiple Access) lead to the multi-carrier transmission moving body of OFDM (Orthogonal Frequency Division Multiplex) etc. The variable technology of service band is made in letter system.For example propose the method disclosed in following 4 patent documentation 1～4.It is detailed Details condition illustrates later herein with reference to accompanying drawing, but respective summary is as described below.

1) " Multi-join queries method and apparatus " disclosed in patent documentation 1 is characterised by, by splitting a series of pair Carrier wave freely service band distributes to user.

2) " movement station, base station apparatus and mobile communicating net " disclosed in patent documentation 2 is characterised by, in communication network The special subcarrier band of interior setup control signal transmission.

3) " method for channel allocation " disclosed in patent documentation 3 is characterised by, according to logical between base station and movement station The length of communication distance is increasing and decreasing the quantity of a series of subcarrier.

4) " wireless base station apparatus and wireless communications method " disclosed in patent documentation 4 is characterised by, by changing one The bandwidth of each subcarrier in the subcarrier of series, to make the adaptive-bandwidth of service band.And above-mentioned each patent documentation As follows.

Patent documentation 1：Japanese Unexamined Patent Publication 9-205411

Patent documentation 2：Japanese patent gazette JP 2003-264524

Patent documentation 3：Japanese patent gazette JP 2004-21476

Patent documentation 4：Japanese patent gazette JP 2002-330467

Problem below point is had based on the conventional art of above-mentioned 4 patent documentations 1～4.

1) in patent documentation 1 (Japanese Unexamined Patent Publication 9-205411), by not transmitting used secondary load The information of ripple, so receiving side needs to receive all of subcarrier to be decoded, efficiency is low.

2) although transmission is with regard to the pair being used in patent documentation 2 (Japanese patent gazette JP 2003-264524) The information of carrier wave, but inherently receive for the shared control channel transmitting this sub-carrier information in addition it is also necessary to be demodulated conciliating Code.

In addition, it is necessary to carry from the data transmitted this shared control channel in the case of carrying out user's multiplexing Take out the information needed for user.And then, due to the information to the input of this shared control channel towards each user, it is possible to Under relatively low transmission speed, frequency band becomes not enough.Due also to its shared control channel of being shared by all of user, so one Denier changes used subcarrier, then can produce impact to all of user.Therefore cannot be simply changed this and share and control The subcarrier of channel.

3) although the bandwidth of data channel can in patent documentation 3 (Japanese patent gazette JP 2004-214746) Become, but the frequency band of fixation that shared control channel is still shared using all of user, have same with above-mentioned patent documentation 2 Problem.

4) in patent documentation 4 (Japanese patent gazette JP 2002-330467), the feelings using user's multiplexing are being considered Under condition, for the AF panel under the transmission by multiple users in reduced levels in addition it is also necessary to implement code multiplexing between user.But It is that, if the bandwidth of subcarrier is different therefore between user, the intercept of code deteriorates, the reason eventually become interference.

In order to prevent this interference, in the case that certain user changes the bandwidth of subcarrier, other users also must be similarly Change the bandwidth of subcarrier.As a result, the poor user of the situation that is transmitted is tied down, the bandwidth of subcarrier constantly broadens, and reduces Efficiency of transmission.Therefore, the bandwidth changing subcarrier has the defective work that sometimes cannot become effective means.

Content of the invention

Therefore the present invention, in view of above-mentioned each problem points, its object is to provide one kind to may be easy to carry out distributing to communication Freely expand, reduce or change the service band of each user in the whole frequency band of system, and this expansion, reduce or change Become the communication system (mobile body communication system) not interfering with other users, a kind of communication for this communication system is especially provided Device (base station and/or terminal).

According to the present invention, as being used behind accompanying drawing and be explained in detail, first to distributing to this communication system Specific frequency band is set in multiple frequency bands that whole frequency band is split and constituted.Then using this specific frequency band, will determine Whether " the service band information " of certain frequency band remaining should be used each other to pass from a communicator in communicator Defeated to another communicator.And then, this specific band setting is " main band " in above-mentioned whole frequency band.This main band Also transmit " data message (user data) " in addition to above-mentioned " service band information ".Also by removing from above-mentioned multiple frequency bands Remove at least one frequency band setting among the frequency band outside above-mentioned " main band " as " expansion frequency band ".This expansion frequency band is main The increase of data volume for transmitting further data message, can be tackled.Therefore, set this expansion frequency band as needed.But Above-mentioned main band must be set really in radiolink immediately, and passes through this main band, not only above-mentioned " service band letter Breath ", " data message " (user data) that connect script in the range of transmission capacity allows is also carried out transmitting.And then can also be General " control information " (subscriber control information) is comprised in this main band.Thus to solve each problem above-mentioned.

According to an aspect of the present invention, the present invention provide a kind of communicator, this communicator be accommodated in by using The multicarrier transmission mode of multiple subcarriers enters in the communication system of row information exchange each other in communicator, and its feature exists In above-mentioned communicator includes：Sending data generating section, this sending data generating section at least generates service band information, and this makes Selected from multiple frequency bands that the whole frequency band distributing to this communication system is split and constituted with band information instruction Service band, above-mentioned service band is used for carrying out the transmission of data message each other in above-mentioned communicator；Wherein, above-mentioned communication Device sends above-mentioned service band information using the special frequency band setting in above-mentioned multiple frequency bands, wherein, above-mentioned specific frequency Band can pass through in time and change, and switch to another frequency band in above-mentioned multiple frequency band.

According to a further aspect in the invention, a kind of communication system being accommodated in communication network, this communication system are also provided Enter row information by using the multicarrier transmission mode of multiple subcarriers each other in communicator to exchange, above-mentioned communicator bag Include：Sending data generating section, this sending data generating section at least generates service band information, and this service band information indicates from right Distribute to the service band selecting in multiple frequency bands that the whole frequency band of this communication system is split and constituted, above-mentioned using frequency Carry the transmission for carrying out data message each other in above-mentioned communicator；Wherein, above-mentioned communicator is using on distributing to State the special frequency band setting in above-mentioned multiple frequency bands of communication system to send above-mentioned service band information；Wherein, above-mentioned communication Device receives service band information from another communicator, another with above-mentioned with the frequency band using the service band information instruction receiving One communicator is communicated；Wherein, above-mentioned special frequency band can pass through in time and change, and switch in above-mentioned multiple frequency band Another frequency band.

Brief description

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

Fig. 2 is the figure representing the basic structure of communicator (receiving side) based on the present invention.

Fig. 3 is the figure representing the specific example of communicator (sending side) 10 based on the present invention.

Fig. 4 is the figure representing the specific example of communicator (receiving side) 20 based on the present invention.

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

Fig. 6 is the figure representing the variation of communicator (receiving side) 20 based on the present invention.

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

Fig. 8 is the figure representing another variation of communicator (receiving side) 20 based on the present invention.

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

Figure 10 is the figure representing the situation that have selected 1 " main band " and " expansion frequency band " respectively.

Figure 11 is the figure of the 1st of the method for salary distribution representing the main band for multiple users.

Figure 12 is the figure of the 2nd of the method for salary distribution representing the main band for multiple users.

Figure 13 is the flow chart representing the dynamic example of frequency band changing main band.

Figure 14 A and Figure 14 B is the figure of the apparatus structure example of the sending side representing pilot signal.

Figure 15 A and Figure 15 B is the apparatus structure example of the return side representing response (CQI) information for pilot signal Figure.

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

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

Figure 18 is the figure of the dynamic modification concisely illustrating main band.

Figure 19 is the flow chart of the 1st of the importing and change representing and expanding frequency band.

Figure 20 is the flow chart of the 2nd of the importing and change representing and expanding frequency band.

Figure 21 is the flow chart of the 3rd of the importing and change representing and expanding frequency band.

Figure 22 is the figure concisely illustrating to expand the dynamic modification of frequency band.

Figure 23 is the flow chart representing the example of both sides changing main band and expansion frequency band.

Figure 24 is the flow chart of the dynamic modification of both sides concisely illustrating main band and expansion frequency band.

Figure 25 is the figure of the apparatus structure example of return side representing response (CQI) information for pilot signal.

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

Figure 27 is the figure of the dynamic modification representing expansion frequency band.

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

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

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

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

Figure 32 is the flow chart of the action example in the device represent Figure 31.

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

Figure 34 is the figure of the main points representing the prior art disclosed in patent documentation 1.

Figure 35 is the figure of the main points representing the prior art disclosed in patent documentation 2.

Figure 36 is the figure of the main points representing the prior art disclosed in patent documentation 3.

Figure 37 is the figure of the main points representing the prior art disclosed in patent documentation 4.

Specific embodiment

First of all for understanding that the present invention is explained with reference to above-mentioned prior art (patent documentation 1～4) as early as possible.

Figure 34 is the figure of the main points representing the prior art disclosed in patent documentation 1.This legend is as represented to 7 user U1 Frequency distribution (epimere) of～U7, hypomere represent the distribution of a series of subcarrier carrying out for user U1 and U2 in detail.Horizontal Axle is frequency.

The system is characterised by, multiple carrier waves are continuously configured on the frequency band that sending side is distributed, according to (U1～U7) is split multiple subcarriers to be carried out continuously configuration at family.

Specifically, being for example located at the whole frequency band can use in 1 communication system is 20MHz, and setting it has 250 Subcarrier.A width of 20 [the MHz]/250=80 [kHz] of band of therefore each subcarrier.And between multiple users (U1～U7) This 250 subcarriers of dynamically distributes are used.

Now, be for example dynamically assigned to user A (U2) 50, to other users B (U1) 75 so that using subcarrier Number can change.

Accompany with this, service band becomes 50 × 80 [kHz]=4 [MHz] for user A, becomes 75 × 80 for user B [kHz]=6 [MHz], service band is variable according to each user.Now, if allocated subcarrier is even on the frequency axis Continuous.Moreover, it is also possible to make the segmentation variable-width of frequency band.

Figure 35 is the figure of the main points representing the prior art disclosed in patent documentation 2.This figure is to represent being total on frequency axiss Figure with the distribution form of control channel data channel.

The system in multi-carrier CDMA system, control signal is transmitted special subcarrier data transmission, and (believe by data Road) special subcarrier separates and set.This shared control channel is expanded by intrinsic extended code.Therefore, exist In the case of receiving this shared control channel, demodulate specific subcarrier, its signal processing amount can be reduced.

Figure 36 is the figure of the main points representing the prior art disclosed in patent documentation 3.This figure represents the number in above-mentioned Figure 35 It is believed that the situation that the frequency band in road can change according to propagation distance (communication distance and base station between).Wherein, send Power is also carried out changing (big-in-little).

The system is to set the transmission speed of every 1 subcarrier as fixing, and the number distributing to the subcarrier of user can become Changing, thus realizing the system of the communication of variable velocity, in the case that the distance between base station and terminal are close, making each The transmit power of subcarrier diminishes, and distributes more subcarrier, when it is distant, while making sending out of each subcarrier Send power to become big, distribute less subcarrier.

In addition, on the one hand making the subcarrier that shared control channel uses be minority, on the other hand to data communication channel (data channel) distributes multiple subcarriers, is kept completely separate the two on the frequency axis to configure.And, special using shared control channel Subcarrier, notifies to movement station to distribute to the center sub-carriers number of the subcarrier of data channel from base station and is used Subcarrier quantity.

Figure 37 is the figure of the main points representing the prior art disclosed in patent documentation 4.This figure represents according to communication environments Quality can change the situation of the bandwidth of each subcarrier.

It is constant, simultaneously that the system makes total number of subcarrier in wireless transmissions according to the situation of communication environments Change the bandwidth of each subcarrier.So that the frequency band of each subcarrier broadens for example when this propagation state degenerates.Thus, Subcarrier due to can not make total changes to be transmitted it is possible to will transmit speed regardless of the quality of communication environments Degree is maintained constant.

The present invention is used for solving by the prior art (patent documentation 1～4) illustrated by above-mentioned Figure 34～Figure 37 respectively Each problem points above-mentioned having, describe in detail with reference to the accompanying drawings.

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

Fig. 2 is the figure representing the basic structure of communicator (receiving side) based on the present invention.

In Fig. 1, cross reference number 10 represents communicator (sending side), and in Fig. 2, cross reference number 20 represents that communicator (receives Side), they are accommodated in identical communication system (mobile body communication system).And, as described above, communicator 10 is base station And communicator 20 is terminal, otherwise or can also, the present invention can be applied, but in order to be best understood from, say in following Illustrate as long as no special in bright, the communicator 10 just setting sending side is base station, if the communicator of receiving side 20 is end End.

With reference first to Fig. 1, service band selection/configuration part 15 especially using selection function select should with counterparting communications The service band using between device 20.Transmission is imported into based on " service band information " If (frequency) of this selection Data generating section 11, herein, generating is become with transmission data (user data) Du (user) that should be transferred to communicator 20 Transmission data Dt (transmission) of one.Therefore send data Dt and comprise transmission data Du and service band information If, But actually also contain other " communication control information " Ict (control).This information Ict is, for example, with regard to uses such as QAM The information of modulation system and the information of transmitted data amount of 1 time with regard to transmission data Du etc..

After above-mentioned transmission data Dt has been applied in the modulation of regulation in modulation portion 12, it is input to the overloading of next stage Ripple transmits transmission processe department 13.By the set-up function of above-mentioned service band selection/configuration part 15, this processing unit 13 is applied to refer to Show band setting indication signal Sb (band) that transmission processe be carried out on above-mentioned selected service band, this processing unit 13 in the frequency band based on this signal Sb, carries out the signal transmission processe according to multi-carrier transmission.

And then in radio section 14, frequency conversion is carried out for transmission data signal St from above-mentioned processing unit 13, from The antenna AT of next stage sends the signal after this conversion to counterparting communications device (terminal) 20.

On the other hand, with reference to Fig. 2, receive the wireless signal from above-mentioned antenna AT (Fig. 1) with antenna AT (Fig. 2), then Carry out frequency conversion in radio section 21, become receiving data signal Sr, and input to multi-carrier transmission reception processing unit 22.? In this processing unit 22, this receiving data signal Sr is carried out with the signal reception processing according to multi-carrier transmission, and then in next stage Demodulation section 23 in demodulate the signal after this signal reception processing.

Receiving data Dr after this demodulation is decoded in receiving data lsb decoder 24, is separated into the transmission data of script Du and above-mentioned service band information If being set before.And also isolate above-mentioned Control on Communication letter from this data Dr Breath Ict.And, by this information Ict control partially due to the direct relation that do not have substantially with the present invention, thus omit it and say Bright.

As described above, service band information If of script obtained from receiving data Dr is separated is input to using frequency Band configuration part 25.This configuration part 25 receives this information If to reproduce above-mentioned band setting indication signal Sb.This signal Sb quilt Be applied to above-mentioned multi-carrier transmission reception processing unit 22, carry out in the selected frequency band in sending side in reason portion 22 in this place according to Signal reception processing according to multi-carrier transmission.Furthermore, it is also possible to establish radiolink originally, select predetermined frequency Band.

The present invention is by above-mentioned band setting indication signal Sb, and makes sending side (10) and receiving side (20) can use phase Same service band.And can expansion simultaneously, contracting in sending side (10) and receiving side (20) this both sides according to this signal Sb Little or change this service band.The above-mentioned purpose of the present invention so can be reached.

While carrying out contrasting the basic structure somewhat specifically describing the invention described above on one side again with above-mentioned prior art.

In the present invention, multiple frequency bands can be divided into by frequency band used in communication system entirety.For example, this communication When the overall service band of system is 20 [MHz], with a frequency band for 5 [MHz], it is divided into four.Using this frequency band 5 [MHz] is transmitting the control channel that service band information is transmitted and the transmission channel (number that transmission data is transmitted It is believed that road) each information.

According to the present invention, as described above, being used for transmitting the frequency band of this control channel to major general as " main band ", also will be by The frequency band of expansion is as " expansion frequency band ".If for example considered with ofdm communication system, set each frequency band 5 above-mentioned [MHz] comprises 100 subcarriers, also sets a width of 50 [kHz] of band of each this subcarrier, using this 100 a series of secondary loads Ripple, to transmit each information of control channel data channel.The multiplexing method of two information can be time-multiplexed, channeling Or extended code multiplexing.

As described above, it is different from patent documentation 3 (Japanese patent gazette JP 2004-214746), by receiving " dominant frequency Band " information is being decoded, thus clear and definite service band (or quantity of service band) is it is possible to be easy to carry out using frequency Band expansion, reduce or change.And it is thus civilian with patent documentation 1 (Japanese Unexamined Patent Publication 9-205411) and patent Offer 3 (Japanese patent gazette JP 2004-214746) difference, the structure of acceptance division also becomes simple.

In addition, if the quantity of the subcarrier of each frequency band be constant, then change with the quantity of service band and The quantity of subcarrier is made to change with ratio of integers.Therefore, if comparing the patent documentation 3 (Japan Patent of subcarrier dynamic change Publication JP 2004-214746), then the structure of acceptance division becomes simple.

And, by service band being specified to terminal from base station in advance, such that it is able to being easily changed and adding above-mentioned expansion Frequency band, can also carry out the change of main band.

And then, fix the bandwidth of each subcarrier if as discussed above, then will not be as patent documentation 4 (Japanese patent gazette JP 2002-330467) like that impact is brought on other users, thus it is possible to vary service band.Explanation is based on the present invention below Various embodiments.

[embodiment 1：The setting of service band]

Some features present embodiment 1 disclosed in are illustrated below first.The main point of this feature as already introduced that Sample, is following (i)～(iii) at 3 points.

I () sets specific frequency from multiple frequency bands that the whole frequency band distributing to communication system is split and constituted Band, using this specific frequency band, will determine whether should be using certain frequency band remaining between communicator mutually (10,20) " service band information " If be transmitted, (ii) is by " main band " that this specific band setting is in whole frequency band, this master Transmitting data information (Du) gone back in addition to service band information If by frequency band, and (iii) will be above-mentioned for the removing from above-mentioned multiple frequency bands " main band " outside frequency band among set at least one frequency band as " expansion frequency band ", this expansion frequency band be mainly used in pass Defeated further data message (Du).

Then, in addition disclosed in present embodiment 1 some it is characterized by following four point (iv)～(vii).

(iv), when above-mentioned " main band " establishes radiolink between communicator mutually (10,20), regularly set Put,

V (), when communicator (20) has multiple, sets " main band " respectively to each in above-mentioned multiple frequency bands, and right Main band should be respectively allocated in each of these multiple communicators (20).

(vi) communicator (20) of more than 2 is come simultaneously using identical by time-multiplexed and/or extended code multiplexing " main band ",

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

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

Fig. 4 is the figure representing the concrete example of communicator (receiving side) 20 based on the present invention.And in all figures In all give same cross reference number to identical element or mark to represent.In addition, it is concrete shown in Fig. 3 and Fig. 4 Example is not limited to present embodiment 1, can also jointly apply in other embodiment 2～10 described later.

Communicator (sending side) 10 with reference first to Fig. 3, to the element 11～15 shown in Fig. 1 and Du, Dt, St, Part corresponding to Sb gives their cross reference number or mark 11～15 and Du, and Dt, St, Sb are representing.

Sending data generating section 11 according to the example of this figure, by data block preparing department 31, encoding section 32, transmission data gauge Calculation portion 33, encoding section 34 and multiplexing unit (Mux) 35 are constituted.

According to service band information If from above-mentioned service band selection/configuration part 15, first pass through transmitted data amount Calculating part 33, to calculate transmission data length, in data block preparing department 31, collects for data according to each transmission data length Block.And then it is transmitted the coding of data in encoding section 32 using this transmission data length.

In coding together with the communication control information Ict of the above-mentioned service band information If modulation system used with expression etc. It is encoded in portion 34.And, encoding section 32 and 34 can also be collected Du and If to encode as 1 encoding section.

Each coding output from two encoding section 32 and 34 is re-used in multiplexing unit (Mux) 35, becomes above-mentioned sending out Send data Dt.This data Dt is modulated as also described above in modulation portion 12.As the method for this multiplexing, partition subcarriers are had to enter Channeling, time-multiplexed (for example using the frame formatting shown in Figure 16) and extended code multiplexing of exercising etc..Additionally as The modulation system of modulation portion 12 has QPSK, 16QAM, 64QAM etc..

Then with regard to multi-carrier transmission transmission processe department 13, in the example shown in this figure, by element 36,37,38, 39 and 40 compositions.Wherein, there is shown the example premised on the communication of OFDM.Other examples premised on the communication of MC-CDMA Son is as shown in Fig. 7 (Fig. 8).

In separated part (DeMux) 36, it is separated into the information belonging to " main band " and the information belonging to " expansion frequency band ".Belong to After the information of " main band " is converted to parallel signal in serial/parallel conversion portion (S/P) 37, in inverse fast Fourier transform portion (IFFT) T/F conversion is carried out to this parallel signal in 38.The parallel signal being converted to this frequency is again in parallel/serial conversion Serial signal is converted in portion (P/S) 39.And then in protection interval (GI) insertion section 40, this serial signal is inserted for preventing Protection interval GI of interference between stop element.

Transmission data signal St so obtaining is input to radio section 14.This radio section 14 according to the example of this figure, by one As frequency mixer 41, local oscillator 42, power amplifier 44 constitute (eliminating D/A inverter and filter etc.), by sky Line AT sends this transmission data signal St.Now, adder 43 is arranged on the way.

Adder 43 is as mentioned above to belonging in separated part (DeMux) 36 by the letter of detached above-mentioned " expansion frequency band " Breath, is implemented and above-mentioned element 37,38,39,40,41 and 42 by element 37 ', 38 ', 39 ', 40 ', 41 ' and 42 ' The same process of process of " main band ", obtains transmission data signal St of " expansion frequency band " side, with above-mentioned " main band " Transmission data signal St of side is integrally formed.

The transmission data of above-mentioned " expansion frequency band " side only generates when needing the data transfer of " expansion frequency band ", and whether It is necessary, to be determined by the inside of band setting indication signal Sb from above-mentioned selection/configuration part 15.

Referring next to Fig. 4, corresponding to the element 21～25 shown in Fig. 2 and Sr, the part of Dr, Du, If, Sb is endowed Their cross reference number and mark 21～25 and Sr, Dr, Du, If, Sb are representing.

Radio section 21, according to the example of this figure, removes the reception letter from antenna AT by band filter (BPF) 51 Unwanted band signal in number, is converted to required receives frequency by frequency mixer 52 and local oscillator 53, thus To receiving data signal Sr.

This receiving data signal Sr is imported into multi-carrier transmission reception processing unit 22 and is processed.This processing unit 22 basis The example of this figure, is made up of the element 54,55,56,57 and 58 illustrating.

The protection interval in sending side insertion is removed first in protection interval (GI) removing unit 54.Signal after GI removal Again parallel signal is converted to by serial/parallel conversion portion (S/P) 55, parallel to this in fast Fourier transform portion (FFT) 56 Signal carries out frequency-time conversion.Change in parallel/serial conversion unit (P/S) 57 again through the parallel signal of this time conversion For serial signal.

On the other hand, when having the information belonging to " expansion frequency band " in the receipt signal from antenna AT, by mixing Device 52 ' to extract the signal of this " expansion frequency band " information with local oscillator 53 ', by identical element S/P55 ', FFT56 ' and P/S57 ', to carry out the process same with the process of above-mentioned element 55～57, becomes and have passed through time conversion Serial signal.

Each serial signal from above-mentioned parallel/serial conversion unit 57 and 57 ' is re-used in multiplexing unit (Mux) 58, Ran Hou Demodulated in demodulation section 23.And, when only sending the information belonging to " main band ", above-mentioned multiplexing unit 58 is not multiplexed, And so that signal is passed through.

Become demodulated receiving data Dr in the demodulation section 23 of next stage from the signal of multiplexing unit 58, defeated afterwards Enter to receiving data lsb decoder 24.This lsb decoder 24, according to the example of this figure, is decoded by separated part (DeMux) 59, data channel Portion 60, control channel lsb decoder 61 and transmitted data amount calculating part 62 are constituted.

Receiving data Dr is separated into data channel side data and control channel side data by above-mentioned separated part 24, is respectively allocated To lsb decoder 60 and lsb decoder 61.From lsb decoder 60 according to transmitted data amount described later, reproduce transmission data Du of script.Another Aspect, reproduces " service band information " If from lsb decoder 61.

Above- mentioned information If mono- aspect from lsb decoder 61 inputs to transmitted data amount calculating part 62, herein according to this If meter Calculate the data length receiving transmission data, carry out the decoding of the transmission data of above-mentioned lsb decoder 60 according to this data length.

It is given to above-mentioned service band configuration part 25, here from above- mentioned information If of lsb decoder 61 on the other hand Generate above-mentioned band setting indication signal Sb.Then the content according to this signal Sb, to each on the path of the dotted line of diagram From circuit part (22,58,59) carry out the setting corresponding with selected frequency band.And, the receiving data lsb decoder of Fig. 4 24 structure can also be carried out starting most to have input receiving data Dr to a lsb decoder (sharing of lsb decoder 60 and 61) After decoding, separated part 59 is separated into data channel and control channel.

In the structure of above-mentioned Fig. 3 and Fig. 4, the frequency band of " main band " is fixing, only the frequency band of " expansion frequency band " Variable.But in certain embodiment of the present invention not only " expansion frequency band ", the frequency band of " main band " is also variable.In figure illustrates The configuration example realized.

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

Fig. 6 is the figure representing the variation of communication control unit (receiving side) 20 based on the present invention.

The difference of the structure shown in these Fig. 5 and Fig. 6 and the structure shown in above-mentioned Fig. 3 and Fig. 4 is, in Fig. 5 Indicating range from band setting indication signal Sb of service band selection/configuration part 15 is not only " expansion frequency band " side (37 ' ～42 ') (situation of Fig. 3), further relates to " main band " side (37～42).And in figure 6, from service band configuration part 25 The indicating range of band setting indication signal Sb is not only " expansion frequency band " side (52 '～57 ') (situation of Fig. 4), further relates to " main Frequency band " side (52～57).So it is also possible to change the frequency band of " main band ".

In addition, carrying out premised on the communication under OFDM for the explanation of above-mentioned concrete example, but outside can also use MC-CDMA's Communication is as premise.In the case of this latter, an example of the communicator on (MC-CDMA basis) represents herein.

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

Fig. 8 is the figure representing another variation of communicator (receiving side) 20 based on the present invention.

For example compare above-mentioned Fig. 5 and Fig. 6 and this Fig. 7 and Fig. 8, in sending side (10), multi-carrier transmission transmission processe department 13 Structure different, and in receiving side (20), the structure of multi-carrier transmission reception processing unit 22 is different.

That is, in the processing unit 13 shown in Fig. 7, difference is using duplication portion (Copier) 46 and multiplier 47. In addition, in the processing unit 22 shown in Fig. 8, difference is using multiplier 65 and combining unit (∑) 66.

First by Fig. 7, sending action is described.Modulate generated transmission data, in duplication portion (Copier) 46 according to The quantity of subcarrier is replicated.In multiplier 47, extended code (C1, C2 ... Cn) is multiplied by the signal that this is replicated.This is tied Fruit carries out IFFT in IFFT Department (38,38 ') and carrys out execution time-frequency conversion.Then, in GI insertion department 40, inserting Carry out frequency conversion after GI, and sent with antenna AT.In addition, with the service band using selection in frequency band selection portion 15 as base Plinth, changes the setting of multi-carrier transmission transmission processe department 13.

Next, with regard to reception action, being illustrated using Fig. 8.Frequency conversion receipt signal first obtaining base band, GI is removed in GI removing unit 54.Then, carry out serial/parallel conversion (55,55 '), be each multiplied by multiplier 65 extended code (C1, C2 ... Cn) being de-spread.In FFT portion (56,56 '), FFT is carried out to this result, after having carried out frequency-time conversion Combining unit 66 takes and.Demodulate this result in demodulation section 23.Carry out process similar to the above afterwards, extract service band letter Breath If.Then, to change the setting of multi-carrier transmission reception processing unit 22 based on service band information If that this extracts. And, in figures 7 and 8, when changing service band, make number of codes n of frequency expansion variable.MC- used as discussed above In the case of CDMA, compare with OFDM and can simplify apparatus structure.But then, due to producing the points making FFT and IFFT Can be with the needs of dynamic change, so making control become numerous and diverse.

Below while the configuration structure with reference to frequency band is while further illustrate present embodiment 1.

In the communication system of the changed service band using OFDM etc., with specific frequency band transmission service band information If.Then, by demodulating and decoding specific frequency band, service band information If can be obtained.By this information If, can carry out Communication under the frequency band expanded.As its premise, in the present invention, it is carried out as follows the segmentation of whole frequency band.

Fig. 9 is the figure of the situation representing the frequency division in communication system.The a series of subcarrier of this figure represents distribution Whole frequency band to communication system.Then this whole frequency band is divided into multiple frequency bands.This figure represents the example being divided into 4 parts, It is divided into four frequency bands, i.e. " frequency band 1 ", " frequency band 2 ", " frequency band 3 ", " frequency band 4 ".Then select these " frequency bands 1 "～" frequency band 4 " In some as above-mentioned " main band ", the frequency band outside reselection is as above-mentioned " expansion frequency band ".

Figure 10 is to represent the figure selecting the situation of " main band " and " expansion frequency band " respectively.As " main band " for example Select above-mentioned frequency band 1, for example select above-mentioned frequency band 2 as " expansion frequency band ".As described above, " main band " distributes to control channel (CH) transmission of data channel (CH), " expansion frequency band " distributes to the transmission of further data channel.For example by base station or Its upper base-station control apparatus of person determine the main band that certain terminal uses.Or can also be conversely, from end side to base station side Specified main band.

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

And then when can also work as communicator (user terminal) and having multiple, set different according to each user terminal Main band.In figure represents this situation.

Figure 11 is the figure of the 1st of the method for salary distribution representing the main band for multiple users.

Figure 12 is the figure of the 2nd of the method for salary distribution representing the main band for multiple users.And this method of salary distribution can To be applied to expand frequency band.

With reference first to Figure 11, to multiple frequency bands, i.e. frequency band 1～frequency band 4 each be respectively allocated each user U1～U4's Main band.Wherein, the quantity now by frequency band to limit number of users.

Then as shown in figure 12, same main band is simultaneously allocated to multiple communicators (user terminal).It is permissible It is multiplexed to carry out by user.As this multiplexing method, there is time-multiplexed and extended code multiplexing, or can also be in conjunction with them It is multiplexed.

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

That is, in a base station it is considered to the communication conditions of the other-end communicating, communication environments and service band etc., when When being judged as to use other frequency bands, carry out the expansion of service band.And, in expansion it is also possible to according to terminal room Transmission data attribute (the QoS of the priority of communication and required transmission speed etc.:Quality of Service) preferentially to enter The expansion of row usage frequency.

So, because service band information If is transmitted in specific frequency band (main band), so receiving side is first only Receiving this main band can be it is not necessary to receive other frequency bands to be demodulated and to decode.And, by using expanding frequency band, The speed of transmission speed can further be improved, it is possible to achieve the improvement of efficiency of frequency employment.

[the 2nd embodiment：The dynamic change of main band]

Some features initially this 2nd embodiment disclosed in are expressed as below.

I) frequency band that in multiple frequency bands (frequency band 1～frequency band 4), main band should be occupied is made to pass through in time and can change,

Ii) judge the quality of the communication environments between communicator (10,20), select best biography among above-mentioned multiple frequency bands The frequency band broadcasting environment or the frequency band that is equivalent to best communication environments being set as main band,

Iii) in new settings main band, notify the change of this frequency band in advance to counterparting communications device,

Iv) between communicator, pass using obtained from the pilot channel in response to being sent or pilot signal The testing result of defeated quality (CQI), judges the quality of above-mentioned communication environments,

V) judgement of the quality of this communication environments is sequentially or simultaneously carried out to all above-mentioned multiple frequency bands,

Vi) also in the control channel under specific frequency band, the judged result of the quality of this communication environments is transferred to other side Communicator.

Usually, the transmission characteristic of control channel compares data channel, and its transmission quality one is reserved.First of all, it is necessary to it is reliable Ground sets the circuit answering transmission data.That is, want to make the transmission quality of the main band comprising control channel better than expansion frequency band, need The more preferable frequency band of communication environments to be selected.Then, quality according to communication environments is described select freely to be set as main band Frequency band specific example.

Figure 13 is the flow chart representing the dynamic example of frequency band changing main band.And, between base station and terminal Basic transmitting-receiving action the 1st embodiment described above illustrated by the same.In addition in this Figure 13, the block table respectively of solid line Show the action of base station, the block of dotted line represents the action of terminal respectively.But they are expressed as also having no relations (for described later on the contrary Other flow charts are similarly).

Step S11：Send pilot frequency channel signal in each frequency band.

Step S12：Receive all of pilot frequency channel signal,

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

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

Step S15：Receive each CQI,

Step S16：Select service band, and determine the change of frequency band regularly,

Step S17：Down control channel transmits selected service band and determined by change timing.

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

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

Step S20：Start reception action using the main band after this change.

And above-mentioned SNR is Signal to Noise Ratio (signal to noise ratio), CQI is Channel Quality Indicator (CQI).And the definition with regard to CQI is recorded in 3GPP (3rd Generation Partnership Project http://www.3gpp.org/) TS25.212Release 5 grade in, and their rule Lattice are registered in http:In //www.3gpp.org/ftp/Specs/html-info/25-series.htm.

Represent in Figure 13 an example, for according to above-mentioned flow chart make main band in time pass through and variable place Reason, can for example be realized by following such apparatus structure.

Figure 14 A and 14B is the figure of the apparatus structure example of the sending side representing pilot signal.

Figure 15 A and 15B is the figure of the apparatus structure example of return side representing response (CQI) information for pilot signal.

The structure of the structure shown in Figure 14 A and 14B and above-mentioned Fig. 3 (or Fig. 5) substantially the same it should the key element of new concern Pilot signal Sp (or pilot channel) for this figure left end and this pilot signal Sp and service band information If are multiplexed Multiplexing unit (Mux) 71, and, also have the CQI extraction unit 72 of the latter half of this figure.The structure of this latter half and above-mentioned figure The structure of 4 (or Fig. 6) is substantially the same it should the element of new concern is the CQI extraction unit 72 of this in figure centre downside.And In the latter half of this figure, corresponding partly attached to the cross reference number 52,53,54 ... being used in the diagram in the diagram Plus 100, be expressed as 152,153,154 ....

Other structure shown in Figure 15 A with 15B is identical with the structure of above-mentioned Fig. 4 (or Fig. 6) it should the composition of new concern will Element is the SNR determination part 75 of this figure top half, CQI calculation unit 76, also via this figure lower half after reentrant pathway 77 Partial encoding section 78 and adder 79.And in this figure top half, in Fig. 4 (receiving side), corresponding part is using figure The cross reference number 52,53,54 ... being used in 4 is indicated, also in the latter half of this figure in Fig. 3 (sending side) Corresponding part adds 100 using the cross reference number 12,37,38 ... being used in Fig. 3, is expressed as 112,137,138 ....

Above-mentioned pilot signal Sp sends information multiplexings with others in practice and is transmitted.This multiplexing method example If any following 2 kinds.

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

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

Figure 16 represents the situation of pilot signals Sp on time orientation, and on the other hand, Figure 17 represents in time orientation Situation with upper pilot signals Sp of the both sides of frequency direction.

Figure 18 is the figure of the dynamic modification of main band concisely illustrating above-mentioned 2nd embodiment.Time is through from this figure Upper downwards.Pass through with this time, main band follows better communication environments, for example according to " frequency band 1 " → " frequency band 2 " → The mode of " frequency band 1 " → " frequency band 4 " changes.

As described above, base station is in all frequency bands applied, it is multiplexed the signal (pilot tone) for measuring communication environments It is used as control channel transmission.And it is also contemplated that not comprising the situation of transmission data Du in practice.Can also replace Pilot signal Sp is arranging pilot channel.

Terminal, with regard to all of frequency band (frequency band 1～frequency band 4), receives pilot frequency channel signal, measures such as SNR and CIR (Carrier to Interference Ratio：Carrier interference ratio) etc. reception situation and communication environments, according to this measured value To calculate above-mentioned CQI, using ascending control channel, sequentially or simultaneously to transmit to base station according to each frequency band.Furthermore, it is also possible to Former state transmits the measurement result of above-mentioned CIR and SNR etc..

The base station that receiving ascending control channel signal, with CQI is demodulated and decodes is best in multiple CQI by having The frequency band selection of CQI value is main band.The change timing of this selection result and main band is equipped on down control channel upload It is defeated by terminal.

Terminal receives this downlink channel control signal and is demodulated and decodes, and extracts service band and change timing Each information.Then, carry out the change of service band according to this change timing.And, changing timing can also for example pass through definitely Time, relative time or time slot units are determining.Moreover, it is also possible to not transmit change timing, by from down control channel The transmission of signal rises to be delayed after 5 time slots etc., to carry out system and to fix.

Above-mentioned middle frequency band selection best for communication environments is main band, but be also contemplated for situation due to other-end and The situation of best frequency band cannot be selected.In this case can select to be equivalent to its 2nd good frequency band.

And, this is in the selection that base station one side carries out main band, it is also possible to similarly select to propagate ring in terminal The best frequency band in border to transmit to base station.

The mensure of SNR and CIR in terminal etc. as set forth above, it is possible to measure it is also possible to according to the time simultaneously to each frequency band Separate to set.And, under the continuous situation waiting of frequency band of narrower bandwidth, because communication environments will not be widely varied, institute One frequency band can only be measured with this situation.And, this measured value can be the meansigma methodss measuring after certain time.

In addition, describe expansion frequency band in the 1st embodiment only send transmission data Du, but in order to measure each frequency band Communication environments are it is also possible to except transmission data Du also sends pilot channel or pilot signal.

In the above description, illustrate from base station the transmission to terminal, but also same to the transmission of base station from terminal on the contrary Sample can be suitable for.

As described above, usually the transmission characteristic of control channel must be than the transmission characteristic of data channel in its transmission quality On will get well.So, the main band comprising control channel needs to select the preferable frequency band of communication environments, but by above-mentioned action, can With by the frequency band selection positioned at best communication environments as main band.And, even if communication environments pass through in time and become Dynamic it is also possible to all the time the frequency band selection positioned at optimal communication environments is main band.

Thus, not only reduce the error of transmission of control channel information, the device being also easy to carry out receiving side sets, but also Transmission quality can be improved.And then, result from the data of error of transmission and retransmit number of times due to reducing, it is possible to making biography Defeated speed is more at a high speed.

And then, it is set as variable it is possible to avoid the inequality of the behaviour in service (load) between frequency band due to main band, The improvement of frequency usage efficiency can be realized.

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

Some features this 3rd embodiment disclosed in are illustrated below first.

I) make in multiple frequency bands (frequency band 1～frequency band 4), to be set as that the frequency band expanding frequency band passes through in time and can change,

Ii) judge the quality of the communication environments between communicator (10,20), select to be equivalent among above-mentioned multiple frequency bands The frequency band of good communication environments is being set as expanding frequency band.

Iii) and when establishing radiolink, limit the frequency band that this communicator (10,20) can use, limit in this institute Dynamically distributes main band and expansion frequency band in fixed frequency band.

Iv) also notify to be set as the set information of the frequency band expanding frequency band to counterparting communications device in advance, to execute expansion ,

V) receive the associated frequency band set information of the frequency band that can expand or can change from counterparting communications device, carry out Expansion frequency band or the change of main band,

Vi) also receive the change timing information of the timing with regard to this change.

Vii) also in the control channel under specific frequency band, transmit sentencing of the quality of communication environments to counterparting communications device Disconnected result,

Viii) between communicator (10,20), using the pilot channel in response to being sent or pilot signal The testing result of the transmission quality (CQI) returning, judges the quality of communication environments,

Ix) according to this communicator can usage frequency, fine or not, each frequency band of communication environments under each frequency band use shape At least one among the required transmission speed of condition data information (Du) come to judge expand frequency band set or change necessity Property,

X) in the above-mentioned expansion frequency band of new settings, notify the change of this frequency band in advance to counterparting communications device.

Figure 19 is the flow chart of the 1st of the importing and change representing and expanding frequency band.

Figure 20 is the flow chart of the 2nd of the importing and change representing and expanding frequency band.

Figure 21 is the flow chart of the 3rd of the importing and change representing and expanding frequency band.

Specifically, Figure 19 represent using terminal can service band and each frequency band CQI select expansion frequency band in the case of Control flow.In addition Figure 20 represent using this can service band, the behaviour in service of each frequency band and transmission data required transmission Speed come to select expand frequency band in the case of control flow.And Figure 21 represents that using terminal can service band, each frequency band The required transmission speed of CQI, the behaviour in service of each frequency band and transmission data come to select expand frequency band in the case of control flow.

In Figure 19,

Step S21：Transmission can service band.

Step S22：Receive this can service band,

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

Step S24：Receive all of pilot frequency channel signal, then calculate each SNR etc. and be converted to CQI,

Step S25：Above-mentioned each CQI is transmitted in ascending control channel.

Step S26：Receive above-mentioned each CQI,

Step S27：Choose whether to need to expand according to this CQI, select to determine that it changes timing while expansion frequency band,

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：To change the setting in each circuit portion according to this change timing,

Step S31：Start reception action in the expansion frequency band after this change.

Then in fig. 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：Choose whether to need to expand, select to determine that it changes timing while expansion frequency band,

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：To change the setting in each circuit portion according to this change timing,

Step S48：Start reception action in the expansion frequency band after this change.

Then in figure 21,

Step S51：Sending each can service band.

Step S52：Receive this can service band,

Step S53：Pilot frequency channel signal can be sent at this in service band.

Step S54：Receive all of pilot frequency channel signal, then calculate each SNR etc. and be converted to CQI,

Step S55：Above-mentioned each CQI is transmitted 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：Choose whether to need to expand, select to determine that it changes timing while expansion frequency band,

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：To change the setting in each circuit portion according to this change timing,

Step S62：Start reception action in the expansion frequency band after this change.

In this 3rd embodiment, the dynamic change to expansion frequency band illustrates.General (wireless when setting circuit When circuit is established), transmit, to base station (or base-station control apparatus), the frequency band that this terminal can use from terminal.Here it is it is above-mentioned Terminal can service band.And it is contemplated that this can service band situation about being notified be illustrated it is also contemplated that conduct Communication system be previously determined can service band etc. the situation that do not notified of situation.

In the same manner as the situation of above-mentioned 2nd embodiment, base station receives pilot signal Sp, and terminal is by with leading that this receives The above-mentioned CQI transmission calculating based on frequency signal Sp is to base station.Then, base station consider terminal can service band, terminal The CQI of each frequency band that transmission comes, the behaviour in service of other-end, required transmission speed of data Du of being transmitted etc., judge The need of the expansion (change of service band number) that this terminal is carried out with frequency band.

Frequency band is selected in the case of being expanded.And then, select above-mentioned change timing during expansion service band.Then Selection information and the above-mentioned change timing of this expansion frequency band is transmitted in control channel.Receive the end of this control channel signal End, based on regard to expanding the information of frequency band and changing timing, changes the setting in each circuit portion in terminal, starts this afterwards Reception under expansion frequency band.

Above-mentioned action is remarked additionally.Wherein with reference to the control flow of above-mentioned Figure 21.First terminal-pair base station or its Upper base-station control apparatus etc., send the frequency band that this terminal can use.Receive the base station of this frequency band can use Pilot frequency channel signal or pilot signal Sp is sent in frequency band.And, believe when sending pilot tone in the shared channel that terminal shares Do not need during road signal to select service band.

Have received the pilot frequency channel signal via each frequency band terminal calculated based on above-mentioned CIR and SNR etc. above-mentioned CQI, transmit this CQI value of calculation to base station in ascending control channel.The base station receiving this value considers CQI and each frequency band The QoS of the required transmission speed of behaviour in service and transmission data Du etc., chooses whether to need to expand, in the case of being expanded Select service band, and determine change timing of this frequency band etc., notified to terminal by down control channel.

Receive the terminal of these information each circuit portion according to above-mentioned change timing setting or setting terminal again, Received in the expansion frequency band after this change after above-mentioned change timing.

Figure 22 is the figure of the dynamic modification of expansion frequency band concisely illustrating this 3rd embodiment.Time is through being from this Figure upper downwards.Pass through with this time, expansion frequency band selects to be equivalent to the preferable frequency of the best frequency band of communication environments Band, enters in the mode of each " frequency band 2 " → " frequency band 2+ frequency band 3+ frequency band 4 " producing and illustrating according in figure when expansion needs Row sets.It is expansion frequency band that multiple band settings can also be combined as the latter.

So, even for the communication environments changing on the time it is also possible to by preferable for communication environments frequency band selection For expanding frequency band.Thus, the error of transmission of control channel information reduces it is easy to the device carrying out receiving side measures, and permissible Improve transmission quality.And then, retransmit number of times it is possible to improve transmission speed due to can reduce data.Further contemplate use In the process time setting in receiving side correction, by notifying the change of expansion frequency band in advance to other side, thus being easy to device Change above-mentioned setting.

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

Feature this 4th embodiment disclosed in is shown below first.

I) make the expansion in the frequency band and the plurality of frequency band that the main band in multiple frequency bands (frequency band 1～frequency band 4) should occupy This both sides of frequency band that frequency band should occupy in the case of misaligned each other in time through and can change,

Ii 1 main band and at least one expansion frequency band) can also be changed simultaneously.

Figure 23 is the flow chart representing the example of both sides changing main band and expansion frequency band.

In detail in this figure,

Step S71：Transmission can service band.

Step S72：Receive this can service band,

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

Step S74：Receive all of pilot frequency channel signal, calculate each SNR etc. and be changed to CQI,

Step S75：Above-mentioned each CQI is transmitted in ascending control channel.

Step S76：Receive above-mentioned each CQI,

Step S77：Select main band, the i.e. best frequency band of communication environments,

Step S78：Reselection expands frequency band, the i.e. next best frequency band of communication environments,

Step S79：Transmit above-mentioned expansion frequency band and it changes timing in down control channel,

Step S80：Select this change timing.

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

Step S82：To change the setting in each circuit portion according to this change timing,

Step S83：Start reception action in the expansion frequency band after this change.

Control flow supplementary notes to Figure 23, herein, if select 1 respectively according to the required transmission speed of transmission data Du Individual main band and expansion frequency band (with reference to Figure 24).Based on the above-mentioned CQI in each frequency band that terminal transmission is come, by communication environments Best frequency band selection is main band.Then by the frequency band selection of communication environments time good (second best) for expanding frequency band.Then select Select change timing, via control channel, they are transferred to other side.

Receive service band information (main band and expansion frequency band both sides) and change the terminal of timing information according to this After changing the setting that timing changes reception lateral circuit portion, receive main band and the signal of expansion this both sides of frequency band.

Figure 24 is the flow process concisely illustrating the dynamic modification of both sides of main band and expansion frequency band in present embodiment 4 Figure.Time is through being upper downward from this figure.As illustrated in this figure, along with main band be set to " frequency band 1 " → " frequency band 1 " → " frequency band 3 " → " frequency band 2 ", expansion frequency band is a certain with the left and right (left side of this figure or right side) of this main band Side is set in couples.Wherein, two frequency bands need not be paired all the time, for example, be conceived to the in figure third level, also have and there is not this expansion Open the situation of frequency band (frequency band 4), and be for example conceived to the in figure fourth stage, this expansion frequency band interval can also be present in it In the frequency band 4 of right adjacent, rather than in the frequency band 3 of diagram.

As set forth above, it is possible to communication environments as main band and are expanded frequency band for best and next best frequency band.Separately Outward, even if communication environments time of origin changes it is also possible to communication environments are respectively chosen as dominant frequency for best and next best frequency band Band and expansion frequency band.

Thus, in the same manner as above-mentioned embodiment, the error of transmission of control channel information reduces it is easy to carry out receiving side Device sets, and can improve transmission quality.And then, retransmit number of times it is possible to change due to can also reduce data Kind transmission speed.Further contemplate the process time for setting in receiving side correction, by notifying main band and expansion to other side in advance Open the change of frequency band, thus be easily changed device setting.

[the 5th embodiment：Select main band and expansion frequency band according to communication environments]

Represent feature disclosed in this 5th embodiment first.

I) communication environments between communicator (10,20) are carried out respectively to each of multiple frequency bands (frequency band 1～frequency band 4) Quality judges, this judged result is transferred to counterparting communications device respectively according to each frequency band,

Ii) or to each of multiple frequency bands (frequency band 1～frequency band 4) carry out the propagation between communicator (10,20) respectively The quality judgement of environment, the respective judged result multiplexing with regard to all of frequency band is collected and is transferred to counterparting communications dress Put,

Iii) using some in main band, expansion frequency band and the better frequency band of communication environments come to counterparting communications dress Put the above-mentioned judged result of transmission.

The configuration example of above-mentioned Figure 15, or the knot that Figure 25 can be used can be used to implement this 5th embodiment Structure example.

Figure 25 is the figure of the apparatus structure example of return side representing response (CQI) information for pilot signal.This figure Configuration example is approximate with the configuration example of above-mentioned Figure 15, and its difference is, is every with multiple frequency bands in the latter half of Figure 15 Individual corresponding indivedual process, and be configured in the latter half of Figure 25 to carry out multiplexing to each CQI of multiple frequency bands collect process. That is, send transmission quality (CQI) to other side in a control channel in fig. 25, be imported into folding for this multiplexing unit (Mux) 80 Return the outlet side of passage 72.

In the respective embodiments described above, by the CQI of each frequency band from terminal transmission to base station when, can be in each frequency band Transmit in ascending control channel, for example can also transmit each CQI of all frequency bands in the ascending control channel of main band.

When transmitting CQI using the ascending control channel of each frequency band, using the configuration example of Figure 15.And, in this configuration example In, uplink transmission data Du is not described but it is also possible to by this data Du multiplexing transmission to control channel.And, this configuration example Contemplate in the case of pilot frequency channel signal is received for multiple frequency bands simultaneously.

In terminal shown in Figure 15, receive the signal of each frequency band, carry out frequency conversion corresponding to respective frequency band.Afterwards Remove GI in GI removing unit 54, frequency-time conversion is carried out by S/P portion 55, FFT portion 56 and P/S portion 57, afterwards in demodulation Demodulate in portion 23.After the propagation state of SNR and CIR etc. using 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 respective frequency band.Now, Other control channel signals can also be transmitted in the lump.Uplink transmission data can also be transmitted in the lump.

The above-mentioned CQI being calculated enters in the latter half of Figure 15 in reentrant pathway 77, by it in encoding section 78 Coding, after being modulated in modulation portion 112, by S/P portion 137, IFFT Department 138 and P/S portion 139 come frequency m- when carrying out Rate is changed.Then insert GI in GI insertion department 140, be respectively converted into corresponding frequency band and sent by antenna AT.

As described above, with above-mentioned embodiment likewise it is possible to transmit the CQI (status transmission) of each frequency band to base station.Separately Outward, can based on the CQI (status transmission) that terminal is sent, the good frequency band selection of communication environments be main band.Similarly, Preferable for communication environments frequency band selection can be expansion frequency band.So, with above-mentioned embodiment it is also possible to pass through to select more Good frequency band improving transmission characteristic, due also to decreasing the number of times sending again of data, so transmission speed can also be improved Degree.

Next with regard to transmitting the situation of all of CQI using the ascending control channel of specific frequency band, using above-mentioned figure 25 configuration example.Use the situation of ascending control channel identical with above-mentioned according to each frequency band, calculate the CQI under each frequency band. These result of calculations are collected for one afterwards by above-mentioned multiplexing unit (Mux) 80, is encoded in encoding section 78.Then exist After being modulated in modulation portion 112, T/F conversion is carried out by S/P portion 137, IFFT Department 138 and P/S portion 139, Then insert GI in GI insertion department 140.Carry out frequency conversion afterwards by circuit 141,142 and carry out sending out from antenna AT Send.

And, the frequency band for the transmission of the CQI being used can be to be chosen as the preferable main band of transmission environment, also may be used To select the frequency band of transmission environment preferably (CQI is best), other frequency bands can also be selected.Set in advance alternatively, it is also possible to use It is set to the frequency band of communication system.

As described above, with above-mentioned embodiment likewise it is possible to transmit the CQI (status transmission) of each frequency band to base station.Separately Outward, can based on the CQI (status transmission) that terminal is sent, the good frequency band selection of communication environments be main band.Similarly, The good frequency band selection of communication environments can be expansion frequency band.As such, it is possible to it is special by selecting more preferable frequency band to improve transmission Property, due also to decreasing the number of times sending again of data it is possible to improve transmission speed.

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

It is characterised by disclosed in this 6th embodiment, each for multiple frequency bands (frequency band 1～frequency band 4), by (i) Frequency band identification number, (ii) use/are not used as main band, (iii) uses/do not use and (iv) present situation as expansion frequency band At least one in each information (i～iv) in maintenance is encoded and is transferred to counterparting communications device.

Figure 26 is the figure of the table representing the high efficiency of transmission for service band information is described.Table 1 represents service band-frequency band A corresponding example of number, table 2 and table 3, for service band-use/untapped establishing method, are shown respectively the 1st With the 2nd.

In the transmission of the above-mentioned service band information of the respective embodiments described above, such as by passing to bandwidth assignment number This number defeated, thus compare the transmission frequency value situation of itself can cut down control channel quantity of information.Using above-mentioned table 1～table 3 Specific example is described.And represent herein and set frequency band used in communication system entirety as 800 [MHz]～820 [MHz], is divided into the example that 4 frequency bands are used as shown in Figure 9.

First, each frequency band shown in table 1 is respectively allocated with frequency band number (1,2,3,4).Then according to table 2 set like that by Which frequency band is used as main band, and which frequency band is used as expansion frequency band (or not using).

Now for example frequency band 1 be " use ", by frequency band 2 be used as " main band ", by frequency band 3 be used as " expansion frequency band ", When frequency band 4 is " use ", become following such control data " yy1100zz ", yy and zz is " 01 " or " 10 " herein.

And, although herein according to frequency band 1, frequency band 2, frequency band 3, the above-mentioned control data of the sequentially built of frequency band 4, only This sequentially can be identified in sending side and receiving side, then which kind of sequentially can.But also can arbitrarily increase and decrease frequency band Quantity.And then although herein illustrate the frequency band of continuous 4 but it is also possible to be on the way having non-service band Discontinuous frequency band.

As described above, by being encoded (list), comparing the feelings of the value of the mid frequency of such as transmission band itself Condition, can cut down quantity of information.

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

As described above, by (list) is encoded to service band information, can be long with the data of compression control signal Degree.Therefore, decrease the ratio of transmission data and control channel information in the latter, thus the efficiency of transmission of transmission data carries High.

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

This 7th embodiment disclosed in feature is shown below first.

I) the continuous expansion frequency band of 1 expansion frequency band or more than 2 is distributed to main band even on the frequency axis Continuous frequency band,

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

Iii) the partial insertion junk for the not service band following above-mentioned isolated expansion frequency band to be transferred to Counterparting communications device.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 of the dynamic modification representing expansion frequency band, and above-mentioned Figure 22 represents the feelings selecting continuous expansion frequency band Condition, on the other hand, Figure 27 represents the situation of the selection (with reference to the 4th section of this figure) carrying out discontinuous expansion frequency band.And scheme 27 view is identical with the view of above-mentioned Figure 22.It is specifically described below.

First explanation expansion the continuous situation of frequency band, above-mentioned Figure 22 represented continuous selected expansion frequency band situation.Its Middle as an example, there is shown by with main band in pairs continuous frequency band selection be expansion frequency band situation.In this Figure 22 Mode in, because expansion frequency band and main band are continuous, so comparing discontinuous situation (Figure 27), the signal processing side of becoming Just.And, with regard to sending action and reception action, identical with illustrate in each embodiment above-mentioned.

On the other hand, illustrate the expansion discontinuous situation of frequency band (the 4th section) in figure 27 as mentioned above.As such, it is possible to According to terminal can service band, communication environments and compatible with other terminals, come to main band or adjacent expansion Frequency band discontinuously selects to expand frequency band.

And, do not set the subcarrier (dotted line with reference to Figure 22 crossing over continuous frequency band in explanation so far SC), but letter is transmitted it is also possible to the subcarrier of setting 2 frequency bands of leap correspondingly increases according to the behaviour in service of other-end Breath amount.

In addition, in receiving lateral terminal, the signal becoming above-mentioned discontinuous frequency band is not received, or by this signal Forcibly processed as junk.Thus, even if expansion frequency band is discontinuously it is also possible to be connect without hindrance Receive.

As described above, by set discontinuous expansion frequency band it may be considered that terminal can service band, communication environments and The behaviour in service of other-end neatly to select to expand frequency band.And thus, it is possible to make frequency usage efficiency more improve.

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

It is characterised by disclosed in this 8th embodiment, make a width of rule of respective band of multiple frequency bands (frequency band 1～frequency band 4) Fixed steady state value, and the quantity of a series of subcarrier in respective frequency band is also the steady state value of regulation.

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

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

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

And the view of these Figure 28～Figure 30 is about the same with the view of above-mentioned Figure 22 and Figure 24 and Figure 27 etc., in figure 22nd, it is indicated using actual waveform in Figure 24, Figure 27 etc., on the other hand, Figure 28～Figure 30 replaces that reality Waveform and the block that is only used as subcarrier are indicated.This is for ease of this 8th embodiment of explanation.I.e. it is easy to visually Illustrate " band unit " this concept with understanding.And, in Figure 28～Figure 30, term used is in addition to " process and postpone " All had been described above.This so-called process postpones, referring for example to Fig. 4 it is meant that being imported into use from service band information If After band setting portion 25, generate band setting indication signal Sb and finish the place till the parameter setting in each circuit portion again The required time delay of reason.

Usually in the communication using a series of subcarrier as multicarrier transmission mode (QFDM and MC-CDMA etc.) In mode, carry out bandwidth change when, be changed being very common with subcarrier unit.Now it is necessary to use subcarrier unit To set use/do not use.In addition, no matter in transmission processe or reception processing, being required for being carried out with subcarrier unit Recognize use/untapped signal processing it is possible to the setting of frequency band can be made to become numerous and diverse and complicated.And then carrying out user In the case of multiplexing, produce the use/untapped needs controlling each subcarrier between users, as a result, cause frequency making Reduction with efficiency.

Then, in this 8th embodiment, overall for communication system can be divided into multiple frequency bands (frequency band 1 by service band ～frequency band 4), on the basis of " quantity of subcarrier is constant " in each frequency band simultaneously split at this, using one or Transmission between person's multiple frequency bands for communication device.Thus, it is possible to realize the improvement of frequency usage efficiency.

Specifically, for example set a frequency band as 5 [MHz], the subcarrier number in this frequency band is 25.Set multiple this Frequency band, makes above-mentioned service band variable with band unit.In above-mentioned Figure 28～Figure 30, illustrate the frequency band expansion under band unit Specific example.The transverse axis of each figure represents bandwidth, and a block being applied with hachure represents a frequency band, is located at this frequency band In inserted multiple subcarriers.It is considered in the same manner as Fig. 9 from the left side for frequency band 1, frequency band 2, frequency band 3, frequency band 4.

Figure 28 represents using frequency band 1 as main band situation, represent in Figure 29 using frequency band 2 as main band feelings Condition.And represent the example passing through and changing the setting of expansion frequency band in time in fig. 30, and, represent and include its expansion frequency Carry as discontinuous situation (with reference to the 6th section).And, the concrete action received and dispatched is as described in above-mentioned embodiment.

As set forth above, it is possible to easily make service band variable, and high-frequency service efficiency can be put forward.Compare with pair Subcarrier unit makes the variable situation of service band, and above-mentioned transmitting-receiving action becomes more easy, and the structure of transceiver also becomes Obtain simply.

[the 9th embodiment：The subcarrier number in each frequency band is made to be constant together with subcarrier band]

Feature disclosed in this 9th embodiment is as follows.

I) make each steady state value with a width of regulation of multiple frequency bands (frequency band 1～frequency band 4), and make in respective frequency band The bandwidth of each subcarrier is also the steady state value of regulation.

Ii) and then, the quantity of each subcarrier is also the steady state value of regulation.Thereby, it is possible to be easy to set master with band unit Frequency band and expansion frequency band.

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

As a result, mutual being different only in that in respective center frequency value of frequency band.Thus, base band signal process and frequency Band is independently homogenized, and compares the 8th embodiment, and the structure of transceiver is more easy.

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

Feature disclosed in this 10th embodiment is as follows.

I) in order to judge need/not needing to expand frequency band, calculate required transmission speed S1 required for anticipation information exchanges The difference (S1-S2) of actual transmission speed S2 reached with reality, positive and negative according to this difference to judge to need and not needs respectively Expansion frequency band,

Ii) herein, above-mentioned actual transmission speed is the transmission data being calculated by the quantity from the frequency band being used The transmission of the quantity of information and this transmission data message is spaced and obtains.

Figure 31 is the figure of the configuration example of communicator (sending side) representing the 10th embodiment.

Figure 32 is the flow chart of the action example of the device representing Figure 31.

Structure with reference first to Figure 31, Ben Tu and above-mentioned Fig. 5 (Fig. 3 is similarly) is almost identical, is simply importing this figure Different on frequency band selection/configuration part 85 (15 deformation) shown in left end and this aspect of actual transmission speed calculating part 86.

Referring next to Figure 32, this action is,

Step S91：Transmission speed needed for confirmation,

Step S92：Confirm to send data volume,

Step S93：Calculate actual transmission speed.

Step S94：Judge whether to be necessary to expand service band based on each velocity amplitude of step S91 and step S93, Setting tool has this necessity.

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

Step S96：Transmit this expansion frequency band and it changes timing in down control channel.

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

Step S98：To change the setting in each circuit portion according to this change timing,

Step S99：Expansion frequency band after change starts receive.

Specifically describe again, in above-mentioned 1st embodiment, only based on required transmission speed, determine expansion frequency band Use/not using and expansion frequency band quantity, and it is also contemplated that the actual transmission speed of reality in this 8th embodiment To carry out the expansion of frequency band with the difference of required transmission speed or to reduce.

Reuse Figure 31 and Figure 32 explanation concrete example.And omit and the 1st embodiment identical part.

If required transmission speed Rd of certain transmission data Du is 10 [Mbps], passed using main band and expansion frequency band Defeated.Now, the quantity according to the transmission data being calculated from the quantity of service band and its transmission interval, can use Figure 31's Actual transmission speed calculating part 86 calculates actual transmission speed Ra of reality.Compare this reality in above-mentioned selection/configuration part 85 Transmission speed Ra and required transmission speed Rd, increase (expansion) service band when actual transmission speed Ra is relatively low.In addition, for example When being judged as that actual transmission speed Ra significantly exceedes required transmission speed Rd, even if decreasing service band be also able to maintain that institute When needing transmission speed Rd, cut down (reducing) service band.

As set forth above, it is possible to both meet required transmission speed, realize the raising of frequency usage efficiency again.And, except upper State outside method, whether the data that can also return from base station transmission to base station has been transferred to terminal (ACK/NACK), as Basic calculation actual transmission speed, makes service band variable.In addition, can also be with the data volume transmitted from base station as base in terminal Plinth calculates transmission speed, and returns to base station, makes service band variable based on this value.

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

Figure 33 is the figure for this 11st embodiment is described, especially it should be noted that part be " frequency band in restriction " and " the whole frequency band after lifting restrictions ".Feature this 11st embodiment disclosed in is illustrated below herein.

I) carried out each other in communicator (10,20) by the multicarrier transmission mode under a series of subcarrier In the communication system of the exchange of information, whole frequency band (" the releasing with reference to Figure 33 of this communication system should distributed to from now on Whole frequency band after restriction ") segmentation and constitute multiple dividing frequencybands (in frequency band a～frequency band d), currently only allow to use one In the situation (with reference to " frequency band in restriction ") of partial dividing frequencyband (" frequency band a "), by the dividing frequencyband allowing this use " frequently With a " it is further divided into 1 or multiple frequency band (the frequency band 1～frequency band 4 as in the 1st～the 10th embodiment) and used, and For each, in currently confined others dividing frequencyband, (frequency band b, frequency band c, frequency band d) are similarly divided into 1 or many Individual frequency band (as the frequency band 1～frequency band 4 of the 1st～the 10th embodiment).Then, when relieving this restriction from now on, for segmentation Whole frequency band and constitute not currently used multiple dividing frequencybands (each of frequency band b～frequency band d), application immediately with will be upper State be currently allowed to using dividing frequencyband (frequency band a) is divided into 1 or multiple frequency band to use with identical,

Ii) here, (frequency band a～frequency band d) mutually has the multiple dividing frequencybands above-mentioned whole frequency band segmentation being constituted Constant bandwidth, and the quantity of subcarrier in this each dividing frequencyband and bandwidth mutually have steady state value.

Specifically describe again, according to compatible with other communication systems, this communication system (or base station) can use Frequency band is limited, afterwards, it is possible to solution the reason transfer to elsewhere etc. by the usage frequency of other communication systems above-mentioned Situation except this restriction.

When envisioning this situation, by the service band (" the frequency band a in restriction ") in above-mentioned restriction and above-mentioned embodiment Similarly it is divided into one or more frequency band to use.And now, by confined frequency band (frequency band b, frequency band c, frequency band D), also it is respectively divided into one or more frequency band.Also, it is preferred that to be split with same band can service band (frequency band a) and limit Each frequency band (frequency band b～frequency band d) in system.Figure 33 is exactly so to be split with same band.And in fig. 33, make It is limited to frequency band a with frequency band and uses as a frequency band, the frequency band in limiting is divided into 3 frequency bands (frequency band b～frequency band D), so that these frequency bands b～d currently cannot be used.And, the subcarrier number preferably in these frequency bands and secondary load Wavestrip is a width of constant.

And due to setting frequency band in limiting, (frequency band a), so service band cannot be expanded as one.According to this 11st enforcement Mode, after relieving above-mentioned restriction, service band is 4 (frequency band a～d), can be immediately transferred to above-mentioned embodiment With in.

By frequency band set as above, thereby while when currently used frequency band is limited, but relieves restriction afterwards, leading to The system crossing the present invention is used and can be shifted immediately.It can realize the flexible utilization of communication system.

As above describe in detail, according to the present invention it is possible to be easy to make service band adaptive-bandwidth, also thus can significantly change The service efficiency of kind frequency.

According to an aspect of the present invention, provide a kind of communicator, this communicator is accommodated in using based on a series of Subcarrier multicarrier transmission mode communicator enter each other row information exchange communication system in it is characterised in that Set specific frequency band from multiple frequency bands that the whole frequency band being assigned to this communication system is split and constituted, use Transmitting service band information, described service band information is used for determining each other should this specific frequency band in above-mentioned communicator This uses which of this frequency band remaining.

According to another aspect of the present invention, above-mentioned specific band setting is the main band in above-mentioned whole frequency band, This main band goes back transmitting data information in addition to above-mentioned service band information.

According to another aspect of the present invention, will be set in the frequency band removing outside above-mentioned main band in above-mentioned multiple frequency bands Fixed at least one frequency band is as expansion frequency band, this further data message of expansion frequency band prevailing transmission.

According to another aspect of the present invention, above-mentioned main band is when the mutual radiolink of above-mentioned communicator is established Regularly set.

According to another aspect of the present invention, when having multiple above-mentioned communicator, to every in above-mentioned multiple frequency bands One difference each sets above-mentioned main band, and to distribute each this dominant frequency corresponding to each of the plurality of communicator Band.

According to another aspect of the present invention, the above-mentioned communicator of more than 2 is multiple by time-multiplexed and/or extended code With simultaneously using same above-mentioned main band.

According to another aspect of the present invention, above-mentioned expansion frequency is increased and decreased according to the required transmission speed of above-mentioned data message The quantity of band.

According to another aspect of the present invention, make the frequency band that the above-mentioned main band in above-mentioned multiple frequency band should be occupied at any time Between 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-mentioned The frequency band of best communication environments or be equivalent to the frequency band of best communication environments and to be set as above-mentioned dominant frequency in multiple frequency bands Band.

According to another aspect of the present invention, in the above-mentioned main band of new settings, notify to counterparting communications device should in advance The change of frequency band.

According to another aspect of the present invention, using in response to having been carried out the pilot tone letter sending between above-mentioned communicator The testing result of the transmission quality obtained by road or pilot signal, to judge the quality of above-mentioned communication environments.

According to another aspect of the present invention, the judgement of the quality of above-mentioned communication environments be to all above-mentioned multiple frequency bands according to Secondary or carry out simultaneously.

According to another aspect of the present invention, the judged result of the quality of above-mentioned communication environments is passed through specifically above-mentioned frequency The control channel of leukorrhagia is being transferred to counterparting communications device.

According to another aspect of the present invention, make to be set as the frequency band of above-mentioned expansion frequency band in above-mentioned multiple frequency band in time 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-mentioned Be equivalent to the frequency band of best communication environments in multiple frequency bands to be set as above-mentioned expansion frequency band.

According to another aspect of the present invention, when radiolink is established, limit the frequency band that this communicator can use, The above-mentioned main band of dynamically distributes and expansion frequency band in the frequency band that this is limited.

According to another aspect of the present invention, the set information that should be set as the frequency band of above-mentioned expansion frequency band is given advance notice To counterparting communications device to execute expansion.

According to another aspect of the present invention, from counterparting communications device receive with can carry out above-mentioned expansion frequency band or can With the related band setting information of the frequency band changing, carry out the change of above-mentioned expansion frequency band or main band.

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

According to another aspect of the present invention, the judged result of the quality of above-mentioned communication environments is passed through specifically above-mentioned frequency The control channel of leukorrhagia is being transferred to counterparting communications device.

According to another aspect of the present invention, using in response to having been carried out the pilot tone letter sending between above-mentioned communicator Road or pilot signal and the testing result of transmission quality that returns, to judge the quality of above-mentioned communication environments.

According to another aspect of the present invention, according to this communicator can usage frequency, the biography under each above-mentioned frequency band Broadcast at least one among the required transmission speed of the quality of environment, the behaviour in service of each this frequency band and above-mentioned data message, come Judge the necessity setting or changing of above-mentioned expansion frequency band.

According to another aspect of the present invention, in new settings above-mentioned expansion frequency band, notify to counterparting communications device in advance The change of this frequency band.

According to another aspect of the present invention, make frequency band that the above-mentioned main band in above-mentioned multiple frequency band should occupy and should This both sides of frequency band that above-mentioned expansion frequency band in multiple frequency bands should occupy are misaligned each other, and pass through in time and can change Become.

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

According to another aspect of the present invention, each of above-mentioned multiple frequency bands is carried out between above-mentioned communicator respectively The quality judgement of above-mentioned communication environments, this judged result is transferred to counterparting communications device respectively according to each this frequency band.

According to another aspect of the present invention, each of above-mentioned multiple frequency bands is carried out between above-mentioned communicator respectively The quality judgement of above-mentioned communication environments, the respective judged result multiplexing with regard to this frequency band all of is collected be transferred to right Square communicator.

According to another aspect of the present invention, using above-mentioned main band, above-mentioned expansion frequency band and good upper of communication environments Some stated in frequency band to transmit above-mentioned judged result to above-mentioned counterparting communications device.

According to another aspect of the present invention, with regard to each of above-mentioned multiple frequency bands, to frequency band identification number, make With/not using for above-mentioned main band, use/not using at least 1 in each information in maintaining for above-mentioned expansion frequency band and present situation Individual encoded, and be transferred to counterparting communications device.

According to another aspect of the present invention, by this expansion frequency band continuous of 1 above-mentioned expansion frequency band or more than 2 Distribute on the frequency axis and above-mentioned main band continuously above-mentioned frequency band.

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

According to another aspect of the present invention, for the partial insertion of the not service band following above-mentioned isolated expansion frequency band Junk is being transferred to counterparting communications device.

According to another aspect of the present invention, make each steady state value with a width of regulation of above-mentioned multiple frequency band, and make Each the quantity of the above-mentioned a series of subcarrier in frequency band is also the steady state value of regulation.

According to another aspect of the present invention, make each steady state value with a width of regulation of above-mentioned multiple frequency band, and make Each the bandwidth of each the above-mentioned subcarrier in frequency band is also the steady state value of regulation.

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

According to another aspect of the present invention, in order to judge need/not needing above-mentioned expansion frequency band, calculate and envision above-mentioned letter Breath exchanges required required transmission speed S1 and the difference (S1-S2) of actual actual transmission speed S2 reached, according to this difference Positive and negative respectively to judge need and do not need this expansion frequency band.

According to another aspect of the present invention, above-mentioned actual transmission speed is by the quantity from the above-mentioned frequency band being used The quantity of transmission data message being calculated and the transmission of this transmission data message are spaced and obtain.

According to another aspect of the present invention, also provide a kind of communication system, this communication system is using based on a series of The multicarrier transmission mode of subcarrier enters the exchange of row information it is characterised in that will from now on should each other in communicator In the multiple dividing frequencybands distributed to the whole frequency band segmentation of this communication system and constitute, current only allow using part thereof of In the case of dividing frequencyband, by allow this using dividing frequencyband be further divided into 1 or multiple frequency band is used, and right In currently confined other above-mentioned dividing frequencyband each, be similarly divided into 1 or multiple frequency band, solve when from now on Except during this restriction, not currently used above-mentioned multiple dividing frequencybands of constituting for splitting above-mentioned whole frequency band each Individual, it is suitable for immediately and be divided into 1 with by the above-mentioned dividing frequencyband being currently allowed to use or multiple frequency band is carried out with identical Utilization.

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

Claims (2)

1. a kind of communicator, this communicator is accommodated in multicarrier transmission mode by using multiple subcarriers in base station side This communicator and each of other communicators of subscriber terminal side between enter in the communication system of row information exchange, Above-mentioned communicator includes：

Service band configuration part, this service band configuration part is directed to each of above-mentioned other communicator of subscriber terminal side At least generate the service band information being transmitted by special frequency band, the instruction of this service band information is to distributing to this communication system The service band selecting in multiple frequency bands that whole frequency band is split and constituted, for above-mentioned other communications of subscriber terminal side Each of device sets described special frequency band respectively, and wherein, above-mentioned service band is used for the above-mentioned communication dress in base station side Put the transmission carrying out data message and above-mentioned other each of communicators of subscriber terminal side between；

Wherein, the above-mentioned communicator of base station side using the above-mentioned special frequency band setting in above-mentioned multiple frequency bands come to user eventually Each of above-mentioned other communicator of side sends above-mentioned service band information, and upper corresponding to subscriber terminal side State each of other communicators and be respectively allocated described special frequency band,

Wherein, above-mentioned special frequency band can pass through in time and change, and switch to another frequency band in above-mentioned multiple frequency band.

2. a kind of communication system being accommodated in communication network, this communication system is by using the multi-carrier transmission of multiple subcarriers Mode is entered row information between each of other communicators of the communicator of base station side and subscriber terminal side and is exchanged, on State communicator to include：

Service band configuration part, this service band configuration part is directed to each of above-mentioned other communicator of subscriber terminal side At least generate the service band information being transmitted by special frequency band, the instruction of this service band information is to distributing to this communication system The service band selecting in multiple frequency bands that whole frequency band is split and constituted, for above-mentioned other communications of subscriber terminal side Each of device sets described special frequency band respectively, and wherein, above-mentioned service band is used for the above-mentioned communication dress in base station side Put the transmission carrying out data message and above-mentioned other each of communicators of subscriber terminal side between；

Wherein, the above-mentioned communicator of base station side is upper using set in the above-mentioned multiple frequency bands distribute to above-mentioned communication system State special frequency band and send above-mentioned service band information to above-mentioned other each of communicators of subscriber terminal side, and Each of above-mentioned other communicator corresponding to subscriber terminal side is respectively allocated described special frequency band；

Wherein, described in each of above-mentioned other communicator of subscriber terminal side receives from the above-mentioned communicator of base station side Service band information, is led to the above-mentioned communicator of base station side with the frequency band using the service band information instruction receiving Letter；

Wherein, above-mentioned special frequency band can pass through in time and change, and switch to another frequency band in above-mentioned multiple frequency band.