CN102694639A

CN102694639A - Multicarrier transmission mode based communication device and communication system

Info

Publication number: CN102694639A
Application number: CN2012101869250A
Authority: CN
Inventors: 大出高义; 河崎义博; 川端和生
Original assignee: Fujitsu Ltd
Current assignee: Fujitsu Internet Technology Co ltd
Priority date: 2004-10-29
Filing date: 2004-10-29
Publication date: 2012-09-26
Anticipated expiration: 2024-10-29
Also published as: CN102983958A; CN101895498B; CN101895498A; CN102970122B; CN102098261B; CN102970122A; CN102098261A; CN102694639B; CN102983958B

Abstract

The invention provides a communication device and a communication system. The communication device is contained in a communication system which carries out information exchange between the communication devices in a multicarrier transmission mode implemented by using a series of subcarriers, the communication device comprises a receiver, the receiver is configured for receiving used frequency band information by using a specific frequency band selected from a plurality of frequency bands assigned to the communication system, the used frequency band information indicates a used frequency band, the used frequency band comprises at least a frequency band except the specific frequency band, and the used frequency band is used for carrying out mutual data information transmission between the communication devices; and after receiving the used frequency band information, the receiver receives data information by using the used frequency band indicated by the used frequency band information.

Description

Communicator and communication system based on multicarrier transmission mode

The application is to be on October 29th, 2004 applying date; Application number is 200480044327.3 (international application no is PCT/JP2004/016154), and denomination of invention is divided an application for the patent application of " based on the communicator and the communication system of multicarrier transmission mode ".

Technical field

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

Background technology

As the above-mentioned communication system that the present invention discussed, a most preferred example is a mobile body communication system, and later explanation is that example describes with this mobile body communication system.Therefore, if according to this example, then above-mentioned communicator is (i) base station (perhaps its upper base-station control apparatus), and is (ii) mobile radio station (portable terminals of PDA etc.).And, for ease, in the explanation of back, sometimes the former (i) is called " base station ", the latter (ii) only is called " terminal ".Wherein, will through the back narration learn that the present invention can not only be applied to above-mentioned base station, can also roughly likewise be applied to above-mentioned terminal, there is no need intended distinction the two.

In mobile body communication system, guarantee that the required transmission speed of user is very big problem providing aspect this service.On the other hand, the employed service band of mobile body communication system is fixed according to each system usually, so even adopted the user multiplexing etc., its maximum transfer speed also is limited.Therefore, inquiring into the method for to change neatly above-mentioned service band according to required transmission speed.

And under situation about considering with mobile body communication system integral body, difference produces the problem that this frequency band can't be used fully to behaviour in service sometimes according to above-mentioned each service band.Therefore, from the viewpoint of effective utilization of frequency, also inquiring into the technology that makes service band variable.

Under this situation, proposed in the multi-carrier transmission mobile body communication system of MC (Multi-Carrier)-CDMA (Code Division Multiple Access) and OFDM (Orthogonal Frequency Division Multiplex) etc., to make the variable technology of service band.Following 4 patent documentations, 1～4 disclosed method has for example been proposed.Its details will describe with reference to accompanying drawing in the back, but summary separately is described below.

1) patent documentation 1 disclosed " polynary method of attachment and device " is characterised in that, comes freely service band to be distributed to the user through cutting apart a series of subcarrier.

2) patent documentation 2 disclosed " mobile radio station, base station apparatus and mobile communicating net " is characterised in that, in communication network, sets the special-purpose subcarrier band of control signal transmission.

3) patent documentation 3 disclosed " method for channel allocation " is characterised in that, increases and decreases the quantity of a series of subcarrier according to the length of the communication distance between base station and the mobile radio station.

4) patent documentation 4 disclosed " wireless base station apparatus and wireless communications method " is characterised in that, through changing the bandwidth of each subcarrier in a series of subcarrier, makes the adaptive-bandwidth of service band.And above-mentioned each patent documentation is following.

Patent documentation 1: jp patent publication spy opens flat 9-205411 number

Patent documentation 2: jp patent publication spy opens 2003-264524 number

Patent documentation 3: jp patent publication spy opens 2004-21476 number

Patent documentation 4: jp patent publication spy opens 2002-330467 number

Technology in the past based on above-mentioned 4 patent documentations 1～4 has following problem points.

1) in patent documentation 1 (jp patent publication spy opens flat 9-205411 number), owing to do not transmit the information of employed subcarrier, decode so receiver side need receive all subcarriers, efficient is low.

2) in patent documentation 2 (jp patent publication spy opens 2003-264524 number),, also need carry out the demodulation sign indicating number though transmission must receive the shared control channel that is used to transmit this sub-carrier information about the information of employed subcarrier.

In addition, carrying out under the multiplexing situation of user, must go out the required information of user from the extracting data of this shared control channel, being transmitted.And then, because to the information of this shared control channel input face, so might under lower transmission speed, become not enough by frequency band to each user.Also since its be all user shared shared control channel, in a single day, then can all users be exerted an influence so changed employed subcarrier.Therefore can't change the subcarrier of this shared control channel simply.

3) in patent documentation 3 (jp patent publication spy opens 2004-214746 number), though the adaptive-bandwidth of data channel, shared control channel still uses the shared fixing frequency band of all users, has the problem same with above-mentioned patent documentation 2.

4) in patent documentation 4 (jp patent publication spy opens 2002-330467 number), considering to use under the multiplexing situation of user, for the interference under a plurality of users' the transmission is suppressed at reduced levels, it is multiplexing also need between the user, to implement sign indicating number.But, if therefore between the user bandwidth of subcarrier different, then the quadrature degree of sign indicating number worsens, and finally becomes the reason of interference.

In order to prevent this interference, change certain user under the situation of bandwidth of subcarrier, other users also must likewise change the bandwidth of subcarrier.Its result, the situation that is transmitted relatively poor user tie down, and the bandwidth of subcarrier constantly broadens, and has reduced efficiency of transmission.Therefore, the bandwidth of change subcarrier has the defective work that can't become effective means sometimes.

Summary of the invention

Therefore the present invention is in view of above-mentioned each problem points; Its purpose is to provide a kind of service band that can be easy to carry out in distributing to the whole frequency band of communication system, freely expanding, dwindling or change each user; And this expansion, dwindle or change and can not influence other user's communications systems (mobile body communication system), a kind of communicator (base station and/or terminal) that is used for this communication system is provided especially.

According to the present invention, use accompanying drawing specifies like the back, set specific frequency band a plurality of frequency bands that at first constitute from the whole frequency band of distributing to this communication system is cut apart.Use this specific frequency band then, whether should use " the service band information " of remaining certain frequency band to be transferred to another communicator each other at communicator from a communicator with having confirmed.And then the band setting that this is specific is " the dominant frequency band " in the above-mentioned whole frequency band.This dominant frequency band is also transmission " data message (user data) " except above-mentioned " service band information ".At least 1 frequency band also will setting among the frequency band outside the removing of above-mentioned a plurality of frequency bands above-mentioned " dominant frequency band " is as " expansion frequency band ".This expansion frequency band is mainly used in the further data message of transmission, can tackle the increase of data volume.Therefore, setting as required should the expansion frequency band.But above-mentioned dominant frequency band must be set at radiolink really immediately, and through this dominant frequency band, not only above-mentioned " service band information ", " data message " (user data) of script also transmits in the scope that transmission capacity allows.And then can also in this dominant frequency band, comprise general " control information " (subscriber control information).Solve above-mentioned each problem thus.

According to an aspect of the present invention; The present invention provides a kind of communicator; The multicarrier transmission mode that this communicator is accommodated in through using a series of subcarrier carries out it is characterized in that above-mentioned communicator comprises: receiver in the communication system of information exchange at communicator each other; This receiver is configured to use the specific frequency band of from a plurality of frequency bands of distributing to above-mentioned communication system, selecting to receive service band information; Above-mentioned service band information indication service band, this service band comprise above-mentioned specific frequency band at least one frequency band in addition, and above-mentioned service band is used for carrying out data information transmission each other at above-mentioned communicator; Wherein, after above-mentioned receiver received above-mentioned service band information, above-mentioned receiver used the indicated service band receiving data information of above-mentioned service band information.

According to a further aspect in the invention; A kind of communication system also is provided; This communication system is carried out information exchange through the multicarrier transmission mode that uses a plurality of subcarriers at communicator each other, and above-mentioned communicator comprises: the base station, and this base station is configured to generate service band information; This service band information indication service band; This service band comprises at least one frequency band beyond the specific frequency band, and above-mentioned base station is configured to use the specific frequency band of from a plurality of frequency bands of distributing to above-mentioned communication system, selecting to send above-mentioned service band information, and above-mentioned service band is used between base station and mobile radio station, carrying out data information transmission; And mobile radio station, this mobile radio station is configured to use above-mentioned specific frequency band to receive above-mentioned service band information from above-mentioned base station, and above-mentioned mobile radio station is configured to use the indicated service band of service band information that receives from above-mentioned base station to come receiving data information.

Description of drawings

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

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

Fig. 3 is the figure of expression based on an object lesson of communicator of the present invention (transmitter side) 10.

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

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

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

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

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

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

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

Figure 11 is the figure of expression for the 1st example of the method for salary distribution of a plurality of users' dominant frequency band.

Figure 12 is the figure of expression for the 2nd example of the method for salary distribution of a plurality of users' dominant frequency band.

Figure 13 is the dynamically flow chart of an example of the frequency band of change dominant frequency band of expression.

Figure 14 A and Figure 14 B are the routine figure of apparatus structure of the transmitter side of expression pilot signal.

Figure 15 A and Figure 15 B are the figure of expression for the apparatus structure example of returning side of response (CQI) information of pilot signal.

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

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

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

Figure 19 is the flow chart of the 1st example of importing and the change of expression expansion frequency band.

Figure 20 is the flow chart of the 2nd example of importing and the change of expression expansion frequency band.

Figure 21 is the flow chart of the 3rd example of importing and the change of expression expansion frequency band.

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

Figure 23 is the flow chart that expression changes a dominant frequency band and the both sides' of expansion frequency band a example.

Figure 24 is the routine flow chart of dynamic change that the dominant frequency band and the both sides of expansion frequency band concisely are shown.

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

Figure 26 is the figure of the table of the expression high efficiency of transmission that is used to explain service band information.

Figure 27 is the figure of the dynamic change example of expression expansion frequency band.

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

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

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

Figure 31 is the routine figure of apparatus structure of the communicator (transmitter side) of expression the 10th execution mode.

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

Figure 33 is the figure that is used to explain the 11st execution mode.

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

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

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

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

Embodiment

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

Figure 34 is the figure of the main points of expression patent documentation 1 disclosed prior art.This legend like expression to the distribution of a series of subcarrier that carries out for user U1 and U2 of expression in detail of the Frequency Distribution (epimere) of 7 user U1～U7, hypomere.Transverse axis is a frequency.

Native system is characterised in that, a plurality of carrier waves are disposed on the frequency band that distributes at transmitter side continuously, and (U1～U7) cutting apart a plurality of subcarriers to be configured continuously according to the user.

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

At this moment, for example dynamic assignment is given 50 of user A (U2), is given 75 of other user B (U1), makes and uses the number of subcarrier to change.

Accompany therewith, service band becomes 50 * 80 [kHz]=4 [MHz] for user A, becomes 75 * 80 [kHz]=6 [MHz] for user B, and service band is variable according to each user.At this moment, establishing the subcarrier that is assigned with is continuous on frequency axis.And, can also make the variable-width of cutting apart of frequency band.

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

Native system is in multi-carrier CDMA system, and subcarrier that the control signal transmission is special-purpose and the special-purpose subcarrier of transfer of data (data channel) are separated and set.This shared control channel is expanded through intrinsic extended code.Therefore, under the situation that receives this shared control channel, the demodulation particular subcarriers gets final product, and can reduce its signal processing amount.

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

Native system is to establish the transmission speed of per 1 subcarrier for fixing, and the number of distributing to user's subcarrier can change, thereby realizes the system of the communication of variable velocity; Under the situation of the close between base station and the terminal; The transmitted power of each subcarrier is diminished on one side, Yi Bian distribute more subcarrier, when its distance is far away; Make the transmitted power of each subcarrier become big on one side, Yi Bian distribute less subcarrier.

In addition, the subcarrier that on the one hand shared control channel is used is minority, on the other hand data communication is distributed a plurality of subcarriers with channel (data channel), on frequency axis, separates the two fully and disposes.And, use the special-purpose subcarrier of shared control channel, distribute to the center subcarrier number of the subcarrier that data channel uses and the quantity of employed subcarrier from the base station to the mobile radio station notice.

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

Native system situation according to communication environments in wireless transmission makes that the total number of subcarrier is constant, changes the bandwidth of each subcarrier simultaneously.For example, this propagation state makes that the frequency band of each subcarrier broadens when degenerating.Thus, total owing to changing, the subcarrier that can not make transmits, so can transmission speed be maintained constant regardless of the quality of communication environments.

The present invention is used to solve above-mentioned each problem points that has respectively through the illustrated prior art of above-mentioned Figure 34～Figure 37 (patent documentation 1～4), specifies with reference to the accompanying drawings.

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

Cross reference number 10 expression communicators (transmitter side) among Fig. 1, cross reference number 20 expression communicators (receiver side) among Fig. 2, they are accommodated in the identical communication system (mobile body communication system).And as stated, communicator 10 is the terminal for base station communicator 20; Otherwise perhaps also can; Can both use the present invention, but for better understanding, short of special explanation in following explanation; The communicator 10 of just establishing transmitter side is the base station, and the communicator 20 of establishing receiver side is the terminal.

At first with reference to Fig. 1, service band selection/configuration part 15 is special use selection functions select should and the other side's communicator 20 between the service band that uses." service band information " If (frequency) based on this selection is imported into the data generation portion 11 that sends; Generate the transmission data Dt (transmission) that becomes one with transmission data (user data) Du (user) that should be transferred to communicator 20 here.Therefore send data Dt and comprise transmission data Du and service band information If, but in fact also contain other " communication control information " Ict (control).This information Ict for example is the information of the modulation system used about QAM etc. and about the information of 1 time the data amount transmitted of transmission data Du etc.

Above-mentioned transmission data Dt has been applied in modulation portion 12 after the modulation of regulation, is transfused to the multi-carrier transmission of next stage to send handling part 13.Set-up function through above-mentioned service band selection/configuration part 15; This handling part 13 is applied indication should on above-mentioned selected service band, send the band setting index signal Sb (band) of processing; This handling part 13 carries out sending processing according to the signal of multi-carrier transmission in the frequency band based on this signal Sb.

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

On the other hand,, receive wireless signal, in radio section 21, carry out frequency inverted then, become reception data-signal Sr, and input to multi-carrier transmission Return Reception Dept. 22 from above-mentioned antenna AT (Fig. 1) with antenna AT (Fig. 2) with reference to Fig. 2.In this handling part 22, this reception data-signal Sr is carried out receiving processing according to the signal of multi-carrier transmission, and then this signal of demodulation receives the signal after handling in the demodulation section 23 of next stage.

Reception data Dr after this demodulation is decoded in receiving data decoding part 24, is separated into transmission data Du originally and the above-mentioned service band information If that is set before.And from these data Dr, also isolate above-mentioned communication control information Ict.And, owing to do not have direct relation in essence, thereby omit its explanation with the present invention by the part of this information Ict control.

As stated, from receiving that data Dr separates and the service band information If of the script that obtains is transfused to service band configuration part 25.This configuration part 25 receives this information And if reproduces above-mentioned band setting index signal Sb.This signal Sb is applied in to above-mentioned multi-carrier transmission Return Reception Dept. 22, in this handling part 22, in the selected frequency band of transmitter side, carries out receiving processing according to the signal of multi-carrier transmission.And, also can select predetermined frequency band establishing radiolink originally.

The present invention is through above-mentioned band setting index signal Sb, and makes transmitter side (10) can use identical service band with receiver side (20).And can in transmitter side (10) and these both sides of receiver side (20), expand simultaneously, dwindle or change this service band according to this signal Sb.Can reach above-mentioned the object of the invention like this.

Compare the basic structure that the invention described above is described a little particularly again on one side with above-mentioned prior art on one side.

In the present invention, the band segmentation that can in communication system integral body, use is a plurality of frequency bands.For example, when the whole service band of this communication system is 20 [MHz], be 5 [MHz] with a frequency band, be divided into four.Each information of control channel that uses this frequency band 5 [MHz] to transmit service band information is transmitted and transmission channel (data channel) that the transmission data are transmitted.

According to the present invention, as stated, the frequency band that is used to transmit this control channel to the major general is as " dominant frequency band ", and the frequency band that also will be expanded is as " expansion frequency band ".If for example consider with ofdm communication system; Then establish above-mentioned each frequency band 5 [MHz] and comprise 100 subcarriers; The bandwidth of also establishing each this subcarrier is 50 [kHz], uses this 100 a series of subcarriers, each information of coming transmitting control channel and data channel.The multiplexing method of two information can be multiplexing for time-multiplexed, channeling or extended code.

As stated; Different with patent documentation 3 (jp patent publication spy opens 2004-214746 number); Decode through receiving " dominant frequency band " information, thus clear and definite service band (the perhaps quantity of service band), so can be easy to carry out service band expansion, dwindle or change.And different with patent documentation 1 (jp patent publication spy opens flat 9-205411 number) thus with patent documentation 3 (jp patent publication spy opens 2004-214746 number), it is simple that the structure of acceptance division also becomes.

In addition, if the quantity of the subcarrier of each frequency band is constant, then follows the quantity of service band to change and the quantity of subcarrier is recently changed with integer.Therefore, if compare the patent documentation 3 (jp patent publication spy opens 2004-214746 number) of subcarrier dynamic change, then the structure of acceptance division becomes simple.

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

And then, if fix the bandwidth of each subcarrier as stated, then can as patent documentation 4 (jp patent publication spy holds 2002-330467 number), not bring influence to other users, can change service band.Explanation is based on various execution modes of the present invention below.

[execution mode 1: the setting of service band]

This execution mode 1 disclosed certain characteristics is shown at first as follows.The main point of this characteristic is following 3 points (i)～(iii) as by the agency of.

(i) set specific frequency band a plurality of frequency bands that constitute from the whole frequency band of distributing to communication system is cut apart; Use this specific frequency band; To confirm whether should use " service band information " If of remaining certain frequency band to transmit each other between (10,20) at communicator; Be " dominant frequency band " in the whole frequency band (ii) with this specific band setting; This dominant frequency band is gone back transmitting data information (Du) except service band information If; At least 1 frequency band (iii) will setting among the frequency band outside the removing of above-mentioned a plurality of frequency bands above-mentioned " dominant frequency band " is as " expansion frequency band ", and this expansion frequency band is mainly used in and transmits further data message (Du).

Then, below in addition disclosed some main points are in this execution mode 14 (iv)～(vii).

When (iv) above-mentioned " dominant frequency band " established radiolink between (10,20) each other at communicator, be provided with regularly,

(v) have when a plurality of when communicator (20), in above-mentioned a plurality of frequency bands each set " dominant frequency band " respectively, and come to distribute respectively the dominant frequency band corresponding to each of these a plurality of communicators (20).

(vi) the communicator more than 2 (20) uses identical " dominant frequency band " simultaneously through time-multiplexed and/or extended code is multiplexing,

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

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

Fig. 4 is the figure of expression based on a concrete example of communicator of the present invention (receiver side) 20.And in all figure, all give same cross reference number or mark is represented to identical inscape.In addition, Fig. 3 and object lesson shown in Figure 4 are not limited to this execution mode 1, after also can common application in other execution modes 2～10 of stating.

At first with reference to the communicator (transmitter side) 10 of Fig. 3, to inscape shown in Figure 1 11～15 and Du, Dt, St, the pairing part of Sb is given their cross reference number or mark 11～15 and Du, Dt, St, Sb representes.

Send the example of data generation portion 11, constitute by data block preparing department 31, encoding section 32, data amount transmitted calculating part 33, encoding section 34 and multiplexing (Mux) 35 according to this figure.

Service band information If according to from above-mentioned service band selection/configuration part 15 at first calculates the transmission data length through data amount transmitted calculating part 33, in data block preparing department 31, compiles and is data block according to each transmission data length.And then use this transmission data length in encoding section 32, to transmit the coding of data.

Above-mentioned service band information If is encoded in encoding section 34 with the communication control information Ict of expression employed modulation system etc.And encoding

section

32 and 34 can be used as also that 1 encoding section is compiled Du and If encodes.

Each coding output from two encoding

section

32 and 34 is re-used in multiplexing (Mux) 35, becomes above-mentioned transmission data Dt.These data Dt is also modulated in modulation portion 12 as stated.As this multiplexing method, channeling, time-multiplexed (for example using frame formatting shown in Figure 16) and the extended code that has partition subcarriers to use is multiplexing etc.Modulation system as modulation portion 12 has QPSK, 16QAM, 64QAM etc. in addition.

Then send handling part 13, in the example shown in this figure, constitute by

inscape

36,37,38,39 and 40 about multi-carrier transmission.Wherein, the communication of expressing with OFDM is the example of prerequisite.The example that other communication with MC-CDMA is prerequisite is shown in Fig. 7 (Fig. 8).

In separated part (DeMux) 36, be separated into information that belongs to " dominant frequency band " and the information that belongs to " expansion frequency band ".The information that belongs to " dominant frequency band " converts parallel signal in serial/parallel converter section (S/P) 37 after, in contrary fast Fourier converter section (IFFT) 38, this parallel signal is being carried out the T/F conversion.The parallel signal that converts this frequency into converts serial signal into once more in parallel/serial converter section (P/S) 39.And then in (GI) insertion section 40, protection interval, this serial signal is inserted the protection interval GI that is used to prevent inter symbol interference.

The transmission data-signal St that obtains like this is input to radio section 14.This radio section 14 constitutes (having omitted D/A inverter and filter etc.) according to the example of this figure by general frequency mixer 41, local oscillator 42, power amplifier 44, sends through antenna AT and should send data-signal St.At this moment, addition portion 43 is provided with on the way.

Addition portion 43 is as stated to belonging to the information of above-mentioned " expansion frequency band " separated in separated part (DeMux) 36; Implement the same processing of processing with " dominant frequency band " usefulness of above-mentioned

inscape

37,38,39,40,41 and 42 through inscape 37 ', 38 ', 39 ', 40 ', 41 ' and 42 '; Obtain the transmission data-signal St of " expansion frequency band " side, become one with the transmission data-signal St of above-mentioned " dominant frequency band " side.

Whether the transmission data of above-mentioned " expansion frequency band " side only generate when the transfer of data of needs " expansion frequency band ", be necessary then to be confirmed by the inside from the band setting index signal Sb of above-mentioned selection/configuration part 15.

Follow with reference to Fig. 4, corresponding to inscape shown in Figure 2 21～25 and Sr, Dr, Du, If, the part of Sb has been endowed their cross reference number and mark 21～25 and Sr, Dr, Du, If, Sb representes.

Radio section 21 is according to the example of this figure; Remove from unwanted band signal in the reception signal of antenna AT through band pass filter (BPF) 51; Convert required receive frequency into through frequency mixer 52 and local oscillator 53, thereby obtain receiving data-signal Sr.

This reception data-signal Sr is imported into multi-carrier transmission Return Reception Dept. 22 and handles.This handling part 22 is made up of illustrated

inscape

54,55,56,57 and 58 according to the example of this figure.

At first remove and remove the protection interval of inserting in the portion 54 at transmitter side at protection interval (GI).Signal after GI removes converts parallel signal into through serial/parallel converter section (S/P) 55 again, in fast Fourier converter section (FFT) 56, this parallel signal is carried out frequency-time conversion.Parallel signal through this time conversion converts serial signal into once more in parallel/serial converter section (P/S) 57.

On the other hand; When having the information that belongs to " expansion frequency band " in the reception signal from antenna AT; Extract the signal of this " expansion frequency band " information through frequency mixer 52 ' and local oscillator 53 '; Carry out the processing same through identical inscape S/P55 ', FFT56 ' and P/S57 ', become the serial signal that has passed through the time conversion with the processing of above-mentioned inscape 55～57.

Each serial signal from above-mentioned parallel/serial converter section 57 and 57 ' is re-used in multiplexing (Mux) 58, then in demodulation section 23 by demodulation.And when belonging to the information of " dominant frequency band " when only sending, above-mentioned multiplexing 58 is not carried out multiplexingly, and signal is passed through.

Become in the demodulation section 23 of next stage by demodulated received data Dr from multiplexing 58 signal, be transfused to afterwards to receiving data decoding part 24.This lsb decoder 24 is made up of separated part (DeMux) 59, data channel lsb decoder 60, control channel lsb decoder 61 and data amount transmitted calculating part 62 according to the example of this figure.

Above-mentioned separated part 24 will receive data Dr and be separated into data channel side data and control channel side data, distribute to lsb decoder 60 and lsb decoder 61 respectively.From lsb decoder 60 according to after the data amount transmitted stated, reproduce transmission data Du originally.On the other hand, reproduce " service band information " If from lsb decoder 61.

Above-mentioned information If from lsb decoder 61 inputs to data amount transmitted calculating part 62 on the one hand, calculates the data length that receives the transmission data according to this If here, carries out the decoding of the transmission data of above-mentioned lsb decoder 60 according to this data length.

Above-mentioned information If from lsb decoder 61 is endowed to above-mentioned service band configuration part 25 on the other hand, generates above-mentioned band setting index signal Sb at this.Then according to the content of this signal Sb, on the path of illustrated dotted line, separately circuit part (22,58,59) is carried out and the corresponding setting of selected frequency band.And the structure of the reception data decoding part 24 of Fig. 4 also can be separated into data channel and control channel beginning most a lsb decoder (

lsb decoder

60 and 61 sharing) imported after reception data Dr decodes in separated part 59.

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

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

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

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

In addition, the explanation of above-mentioned concrete example is that prerequisite is carried out with the communication under the OFDM, but outside also can use MC-CDMA communication as prerequisite.An example of the communicator on (MC-CDMA basis) is represented herein under this latter's the situation.

For example more above-mentioned Fig. 5 and Fig. 6 and this Fig. 7 and Fig. 8, in transmitter side (10), the structure that multi-carrier transmission is sent handling part 13 is different, and in receiver side (20), the structure of multi-carrier transmission Return Reception Dept. 22 is different.

That is, in handling part shown in Figure 7 13, difference is to use duplicates portion (Copier) 46 and multiplier 47.In addition, in handling part shown in Figure 8 22, difference is to use multiplier 65 and synthetic portion (∑) 66.

At first use Fig. 7 to explain and send action.The transmission data that modulation is generated are duplicated according to the quantity of subcarrier in the portion of duplicating (Copier) 46.In multiplier 47 with extended code (C1, C2 ... Cn) multiply by the signal that this duplicated.This result is carried out IFFT come time of implementation-frequency inverted in IFFT portion (38,38 ').Then, in GI insertion section 40, after having inserted GI, carry out frequency inverted, and send with antenna AT.In addition, be the basis, change the setting that multi-carrier transmission is sent handling part 13 to use the service band of selecting in the frequency band selection portion 15.

Next, about receiving action, use Fig. 8 to describe.At first frequency inverted receives signal and obtains base band, removes in the portion 54 at GI and removes GI.Then, carry out serial/parallel conversion (55,55 '), in multiplier 65, multiply by extended code (C1, C2 separately ... Cn) carry out despreading.In FFT portion (56,56 '), this result is carried out FFT, after having carried out the conversion of frequency-time, in synthetic portion 66, get and.In this result of demodulation section 23 demodulation.Carry out afterwards and above-mentioned same processing, extract service band information If.Then, be the setting that the basis changes multi-carrier transmission Return Reception Dept. 22 with this service band information If that extracts.And, in Fig. 7 and Fig. 8, make variable the getting final product of number of codes n of frequency expansion when changing service band.Use as stated under the situation of MC-CDMA, with OFDM relatively can the simplification device structure.But then, make the needs that counting of FFT and IFFT can dynamic change owing to produce, institute is so that control and become numerous and diverse.

Following one side further specifies this execution mode 1 on one side with reference to the configuration structure of frequency band.

In the communication system of the changed service band that uses OFDM etc., with specific frequency band transmission service band information If.Then, through the specific frequency band of demodulation sign indicating number, can obtain service band information If.Through this information If, the communication under the frequency band that can carry out being expanded.As its prerequisite, carry out cutting apart of whole frequency band as follows among the present invention.

Fig. 9 is the figure of the situation of the frequency division in the expression communication system.The a series of subcarrier of this figure representes to distribute to the whole frequency band of communication system.Then this whole frequency band is divided into a plurality of frequency bands.This figure expression is divided into 4 parts example, is divided into four frequency bands, i.e. " frequency band 1 ", " frequency band 2 ", " frequency band 3 ", " frequency band 4 ".Select some as above-mentioned " dominant frequency band " in these " frequency bands 1 "～" frequency band 4 " then, the frequency band outside selecting again is as above-mentioned " expansion frequency band ".

Figure 10 is the figure that representes to select respectively the situation of " dominant frequency band " and " expansion frequency band ".For example select above-mentioned frequency band 1 as " dominant frequency band ", for example select above-mentioned frequency band 2 as " expansion frequency band ".As stated, " dominant frequency band " distributed to the transmission of control channel (CH) and data channel (CH), and " expansion frequency band " distributed to the transmission of further data channel.For example confirm the dominant frequency band that use at certain terminal by base station or its upper base-station control apparatus.Otherwise perhaps also can, from end side base station side is specified the dominant frequency band.

Above-mentioned dominant frequency band can predetermined fixed be a communication system also, perhaps also can set fixing should the setting up to this sign off at communicator when establishment is wireless between (base station and terminal) each other.

And then can also work as communicator (user terminal) and have when a plurality of, set according to each user terminal different dominant frequency bands.This situation of expression among the figure.

Figure 12 is the figure of expression for the 2nd example of the method for salary distribution of a plurality of users' dominant frequency band.And this method of salary distribution can be applied to expand frequency band.

At first with reference to Figure 11, to a plurality of frequency bands, be that each of frequency band 1～frequency band 4 distributed the dominant frequency band of each user U1～U4 respectively.Wherein, come the limited subscriber number through the quantity of frequency band this moment.

So shown in figure 12, same dominant frequency band is distributed to a plurality of communicators (user terminal) simultaneously.It can carry out through the user is multiplexing.As this multiplexing method, it is multiplexing to have time-multiplexed and extended code, and it is multiplexing perhaps also can to combine them to carry out.

And then in this execution mode 1, the required transmission speed according to data message (transmission data Du) can increase and decrease service band (frequency band 1～frequency band 4).

That is, in the base station, communication conditions, communication environments and the service band etc. of the other-end of considering to communicate by letter when being judged as can use other frequency bands the time, carry out the expansion of service band.And, in when expansion, also can come preferentially to carry out the expansion of frequency of utilization according to the transmission data attribute (QoS:Quality of Service) of the priority of the communication of terminal room and required transmission speed etc.

Like this,, receive this dominant frequency band in specific frequency band (dominant frequency band), need not receive other frequency bands and carry out the demodulation sign indicating number so receiver side at first needs only because service band information If is transmitted.And, through using the expansion frequency band, can further improve the speed of transmission speed, can realize the improvement of frequency utilization efficient.

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

Following expression is disclosed certain characteristics in this 2nd execution mode at first.

I) frequency band that the middle dominant frequency band of a plurality of frequency bands (frequency band 1～frequency band 4) should be occupied passes through in time and can change,

Ii) judge the quality of the communication environments between communicator (10,20), the frequency band of selecting the frequency band of communication environments best among above-mentioned a plurality of frequency band or being equivalent to best communication environments is set at the dominant frequency band,

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

Iv) between communicator, use the testing result of the transmission quality (CQI) that obtains in response to the pilot channel that has carried out sending or pilot signal, judge the quality of above-mentioned communication environments,

V) the judgement of the quality of this communication environments is carried out all above-mentioned a plurality of frequency bands successively or simultaneously,

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

Usually, the transmission characteristic of control channel is compared data channel, and its transmission quality one is reserved.At first, must set the circuit that should transmit data reliably.That is, want to make the transmission quality of the dominant frequency band that comprises control channel better, need to select the better frequency band of communication environments than the expansion frequency band.So, the object lesson that selects freely to be set at the frequency band of dominant frequency band according to the quality of communication environments is described.

Figure 13 is the dynamically flow chart of an example of the frequency band of change dominant frequency band of expression.And move as the 1st above-mentioned execution mode is illustrated with the basic transmitting-receiving between the terminal base station.In this Figure 13, the piece of solid line is represented the action of base station respectively in addition, and the piece of dotted line is represented the action at terminal respectively.But they are expressed as on the contrary and also have no relations (for after other flow charts of stating too).

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

Step S12: receive all pilot frequency channel signals,

Step S13: calculate each SNR and wait and convert CQI into,

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

Step S15: receive each CQI,

Step S16: select service band, and the change of definite frequency band is regularly,

Step S17: selected service band of transmission and determined change are regularly in down control channel.

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

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

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

And above-mentioned SNR is Signal to Noise Ratio (signal to noise ratio), and CQI is Channel Quality Indicator (CQI).And be recorded in about the definition of CQI among the TS25.212 Release 5 etc. of 3GPP (3rd Generation Partnership Project http://www.3gpp.org/), and their specification is registered among the http://www.3gpp.org/ftp/Specs/html-info/25-series.htm.

Express among Figure 13 an example, be used for the dominant frequency band being passed through and variable processing in time according to above-mentioned flow chart, can for example realize through following such apparatus structure.

Figure 14 A and 14B are the routine figure of apparatus structure of the transmitter side of expression pilot signal.

Figure 15 A and 15B are the figure of expression for the apparatus structure example of returning side of response (CQI) information of pilot signal.

Figure 14 A is identical in fact with the structure of above-mentioned Fig. 3 (or Fig. 5) with the structure shown in the 14B; The key element that should newly pay close attention to is carried out multiplexing multiplexing (Mux) 71 for the pilot signal Sp (perhaps pilot channel) of this figure left end with to this pilot signal Sp and service band information If; And, also have the CQI extraction portion 72 of the latter half of this figure.The structure of+this latter half is identical in fact with the structure of above-mentioned Fig. 4 (or Fig. 6), and the inscape that should newly pay close attention to is schemed the CQI extraction portion 72 of central downside for this.And in the latter half of this figure, corresponding part

cross reference number

52,53,54 in Fig. 4 in Fig. 4, having used ... Add 100, be expressed as 152,153,154 ...

Figure 15 A is identical with the structure of above-mentioned Fig. 4 (or Fig. 6) with the structure shown in the 15B in addition; The inscape that should newly pay close attention to is SNR determination part 75, the CQI calculating part 76 of this figure the first half, also has via the encoding section 78 and the addition portion 79 of reentrant pathway 77 this figure the latter half afterwards.And in this figure the first half; Corresponding part is used the

cross reference number

52,53,54 that has used among Fig. 4 in Fig. 4 (receiver side) ... Represent; Also in the latter half of this figure in Fig. 3 (transmitter side) corresponding part use the

cross reference number

12,37,38 that has used among Fig. 3 ... Add 100, be expressed as 112,137,138 ...

Above-mentioned pilot signal Sp is transmitted with other transmission information multiplexing on practice.This multiplexing method for example has following 2 kinds.

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

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

Figure 18 is the routine figure of dynamic change that the dominant frequency band of above-mentioned the 2nd execution mode concisely is shown.Effluxion is gone up downwards from this figure's.Follow this effluxion, the dominant frequency band is followed better communication environments, for example according to the mode transition of " frequency band 1 " → " frequency band 2 " → " frequency band 1 " → " frequency band 4 ".

As stated, the base station is in all frequency bands of using, and the multiplexing signal (pilot tone) that is used to measure communication environments is used as the control channel transmission.And on practice, also be susceptible to the situation that does not comprise transmission data Du.Can also replace pilot signal Sp pilot channel is set.

The terminal is about all frequency bands (frequency band 1～frequency band 4); Receive pilot frequency channel signal; Carrier interference ratio) etc. measure for example SNR and CIR (Carrier to Interference Ratio: reception situation and communication environments; Calculate above-mentioned CQI according to this measured value, use ascending control channel, according to each frequency band successively or simultaneously to base station transmits.And, also can former state transmit the mensuration result of above-mentioned CIR and SNR etc.

The frequency band that the base station that receives the ascending control channel signal, CQI is carried out the demodulation sign indicating number will have CQI value best among a plurality of CQI is chosen as the dominant frequency band.The change of this selection result and dominant frequency band regularly is equipped on is transferred to the terminal on the down control channel.

The terminal receives this downlink channel control signal and carries out the demodulation sign indicating number, and extracts service band and change each information regularly.Then, regularly carry out the change of service band according to this change.And, change regularly and also can for example confirm through absolute time, relative time or time slot unit.And, can also not transmit and change regularly, through delaying from the transmission of downlink channel control signal behind 5 time slots etc., carry out system and fix.

Frequency band in above-mentioned that communication environments is best is chosen as the dominant frequency band, but also considers can't select owing to the situation of other-end the situation of best frequency band.Can select to be equivalent to its 2nd good frequency band in this case.

And this is in base station one side and carries out the selection of dominant frequency band, but can also select the best frequency band of communication environments to come to base station transmits at the terminal similarly.

The mensuration of SNR on the terminal and CIR etc. can be measured each frequency band as stated simultaneously, also can divide the setting of coming according to the time.And, under the situation that the narrower frequency band of bandwidth waits continuously, owing to communication environments can not change significantly, so this situation can only be measured a frequency band.And this measured value can be to measure certain hour mean value afterwards.

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

In above-mentioned explanation, explained from the base station to the transmission at terminal, but the transmission to the base station can be suitable for too from the terminal on the contrary.

As stated, usually the transmission characteristic of control channel must be better on its transmission quality than the transmission characteristic of data channel.So the dominant frequency band that comprises control channel need be selected communication environments frequency band preferably, but, can the frequency band that be positioned at best communication environments be chosen as the dominant frequency band through above-mentioned action.And, even communication environments passes through and change in time, also can all the time the frequency band that is positioned at best communication environments be chosen as the dominant frequency band.

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

And then, because being set at of dominant frequency band is variable,, can realize the improvement of frequency service efficiency so can avoid the inequality of the behaviour in service (load) between frequency band.

[execution mode 3: the dynamic change of expansion frequency band]

Disclosed certain characteristics in this 3rd execution mode is shown at first as follows.

I) make be set in a plurality of frequency bands (frequency band 1～frequency band 4) expansion frequency band frequency band in time through and can change,

Ii) judge the quality of the communication environments between communicator (10,20), the frequency band of selecting to be equivalent to best communication environments among above-mentioned a plurality of frequency band is set at the expansion frequency band.

Iii) and when establishing radiolink, limit the operable frequency band of this communicator (10,20), dynamic assignment dominant frequency band and expansion frequency band in the frequency band that this limited.

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

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

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

Vii) also in the control channel under specific frequency band to the judged result of the quality of the other side's communicator transmission communication environments,

Viii) between communicator (10,20), use the testing result of the transmission quality of returning in response to the pilot channel that has carried out sending or pilot signal (CQI), judge the quality of communication environments,

Ix) but according at least 1 necessity of judging the setting or the change of expansion frequency band among the frequency of utilization of this communicator, the required transmission speed of behaviour in service and data message (Du) of quality, each frequency band of communication environments under each frequency band,

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

Particularly, but Figure 19 representes to use the CQI of terminal service band and each frequency band to select the control flow under the situation of expansion frequency band.But Figure 20 representes to use the required transmission speed of behaviour in service and the transmission data of this service band, each frequency band to select to expand the control flow under the situation of frequency band in addition.And but Figure 21 representes to use the required transmission speed of behaviour in service and transmission data of CQI, each frequency band of terminal service band, each frequency band to select to expand the control flow under the situation of frequency band.

Among Figure 19,

Step S21: but service band sent.

Step S22: be somebody's turn to do service band but receive,

Step S23: be somebody's turn to do service band but use, send pilot frequency channel signal.

Step S24: receive all pilot frequency channel signals, calculate each SNR etc. then and convert CQI into,

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

Step S26: receive above-mentioned each CQI,

Step S27: select according to this CQI whether needs are expanded, confirm when selecting the expansion frequency band that it changes regularly,

Step S28: transmission should be expanded frequency band and change regularly in down control channel.

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

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

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

Follow in Figure 20,

Step S41: but service band sent.

Step S42: but above-mentioned service band received,

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

Step S44: whether need to select expansion, confirm when selecting the expansion frequency band that it changes regularly,

Step S45: transmission should be expanded frequency band and change regularly in down control channel.

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

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

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

Then in Figure 21,

Step S51: but each service band sent.

Step S52: be somebody's turn to do service band but receive,

Step S53: but in this service band, send pilot frequency channel signal.

Step S54: receive all pilot frequency channel signals, calculate each SNR etc. then and convert CQI into,

Step S55: above-mentioned each CQI of transmission 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: whether need to select expansion, confirm when selecting the expansion frequency band that it changes regularly,

Step S59: transmission should be expanded frequency band and change regularly in down control channel.

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

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

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

In this 3rd execution mode, the dynamic change of expanding frequency band is described.Generally when setting circuit (when radiolink is established) transmitted the operable frequency band in this terminal from the terminal to base station (perhaps base-station control apparatus).But Here it is above-mentioned terminal service band.And, but imagination situation that this service band is notified describe, but also consider as communication system and confirmed the situation that the situation of service band etc. is not notified in advance.

With the situation of above-mentioned the 2nd execution mode likewise, the base station receives pilot signal Sp, the terminal will be that the above-mentioned CQI that basic calculation goes out is transferred to the base station with this pilot signal Sp that receives.Then; But the behaviour in service of CQI, the other-end of the service band at terminal, each frequency band that terminal transmission is come, the required transmission speed of the data Du that transmits etc. are considered in the base station, judge whether to carry out the expansion (change of service band number) of frequency band to this terminal.

Under situation about expanding, select frequency band.And then the above-mentioned change when selecting the expansion service band regularly.The selection information of this expansion frequency band of transmission and above-mentioned change timing in control channel then.The terminal that receives this control channel signals is the basis with the information about the expansion frequency band with changing regularly, changes the setting of each circuit part in the terminal, begins the reception under this expansion frequency band afterwards.

To above-mentioned action supplementary notes.Wherein with reference to the control flow of above-mentioned Figure 21.At first the operable frequency band in this terminal is sent to base station or its upper base-station control apparatus etc. in the terminal.Pilot frequency channel signal or pilot signal Sp are sent in the base station that receives this frequency band in operable frequency band.And, when in the shared shared channel in terminal, sending pilot frequency channel signal, need not select service band.

The terminal that has received via the pilot frequency channel signal of each frequency band is the above-mentioned CQI of basic calculation with above-mentioned CIR and SNR etc., in ascending control channel to this CQI calculated value of base station transmits.The QoS of the behaviour in service of CQI and each frequency band and the required transmission speed of transmission data Du etc. is considered in the base station that receives this value; Whether need to select expansion; Under situation about expanding, select service band, and the change of definite this frequency band timing etc., notify to the terminal through down control channel.

The terminal that receives these information receives in this expansion frequency band after changing after above-mentioned change regularly according to above-mentioned change timing setting or each circuit part of setting terminal once more.

Figure 22 is the routine figure of dynamic change that the expansion frequency band of this 3rd execution mode concisely is shown.Effluxion is going up downwards from this figure.Along with this effluxion, on one side the expansion frequency band selects to be equivalent to the frequency band preferably of the best frequency band of communication environments, Yi Bian when each generation expansion needs, set according to the mode of illustrative " frequency band 2 " → " frequency band 2+ frequency band 3+ frequency band 4 " in scheming.Can also as the latter, be the expansion frequency band by a plurality of band settings of combination.

Like this, even go up the communication environments of change for the time, also can with communication environments preferably frequency band be chosen as the expansion frequency band.Thus, the error of transmission of control channel information reduces, and is easy to carry out the device mensuration of receiver side, and can improves transmission quality.And then, owing to can reduce the number of times of redispatching of data, so can improve transmission speed.Also consider to be used for processing time, notify the change of expansion frequency band to the other side, thereby be easy to device is changed above-mentioned setting through prior in receiver side correction setting.

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

The disclosed characteristic of this 4th execution mode is shown at first below.

I) these both sides of frequency band that frequency band that the dominant frequency band in a plurality of frequency bands (frequency band 1～frequency band 4) should occupy and expansion frequency band in this a plurality of frequency bands should be occupied pass through in time under situation about not overlapping each other and can change,

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

In this figure,

Step S71: but service band sent.

Step S72: be somebody's turn to do service band but receive,

Step S73: be somebody's turn to do service band but use, send pilot frequency channel signal.

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

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

Step S76: receive above-mentioned each CQI,

Step S77: select the dominant frequency band, be the best frequency band of communication environments,

Step S78: select the expansion frequency band again, be communication environments time good frequency band,

Step S79: the above-mentioned expansion frequency band of transmission changes regularly with it in down control channel,

Step S80: select and to change regularly.

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

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

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

To the control flow supplementary notes of Figure 23, here, establish according to the required transmission speed of transmission data Du and select 1 dominant frequency band and expansion frequency band (with reference to Figure 24) respectively.Above-mentioned CQI with in each next frequency band of terminal transmission is the basis, and the frequency band that communication environments is best is chosen as the dominant frequency band.Frequency band with communication environments time good (second best) is chosen as the expansion frequency band then.Then select to change regularly, be transferred to the other side to them via control channel.

The terminal that receives service band information (dominant frequency band and expansion frequency band both sides) and change timing information receives dominant frequency band and these both sides' of expansion frequency band signal after regularly having changed the setting of receiver side circuit part according to this change.

Figure 24 is the flow chart that dominant frequency band in this execution mode 4 and the both sides' that expand frequency band dynamic change example concisely is shown.Effluxion is going up downwards from this figure.As this figure institute is illustrative, be accompanied by the dominant frequency band and be set to " frequency band 1 " → " frequency band 1 " → " frequency band 3 " → " frequency band 2 ", a certain side on (left side of this figure or right side) is set in couples about expansion frequency band and this dominant frequency band.Wherein, it is paired all the time that two frequency bands need not, and for example is conceived to the third level among the figure; The situation that does not have this expansion frequency band (frequency band 4) is also arranged; And for example being conceived to the fourth stage among the figure, this expansion frequency band also can devices spaced apart be present in the frequency band 4 of its right adjacent, rather than in the illustrated frequency band 3.

As stated, can be that best and inferior good frequency band is respectively as dominant frequency band and expansion frequency band with communication environments.In addition, even the change of communication environments time of origin can be that best and inferior good frequency band is chosen as dominant frequency band and expansion frequency band respectively with communication environments also.

Thus, with above-mentioned execution mode likewise, the error of transmission of control channel information reduces, the device that is easy to carry out receiver side is set, and can improve transmission quality.And then, owing to also can reduce the number of times of redispatching of data, so can improve transmission speed.Also consider to be used for processing time,, set thereby be easy to modifier through notifying of the change of dominant frequency band to the other side in advance with the expansion frequency band in receiver side correction setting.

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

At first represent the disclosed characteristic of this 5th execution mode.

I) quality that each of a plurality of frequency bands (frequency band 1～frequency band 4) is communicated the communication environments between device (10,20) is respectively judged, this judged result is transferred to the other side's communicator respectively according to each frequency band,

Ii) or to the quality that each of a plurality of frequency bands (frequency band 1～frequency band 4) communicates the communication environments between device (10,20) respectively judge, will be transferred to the other side's communicator about multiplexing compiling of the judged result separately of all frequency bands,

Iii) use some in the better frequency band of dominant frequency band, expansion frequency band and communication environments to transmit above-mentioned judged result to the other side's communicator.

In order to implement the structure example that this 5th execution mode can use above-mentioned Figure 15, perhaps can use the structure example of Figure 25.

Figure 25 is the figure of expression for the apparatus structure example of returning side of response (CQI) information of pilot signal.The structure example of this figure and the structure example of above-mentioned Figure 15 are approximate, and its difference is, be each the corresponding individual treated with a plurality of frequency bands in the latter half of Figure 15, and each CQI that constitutes in the latter half of Figure 25 a plurality of frequency bands carry out the multiplexing processing that compiles.That is, in Figure 25, in a control channel, send transmission quality (CQI) to the other side, multiplexing for this reason (Mux) 80 is imported into the outlet side of reentrant pathway 72.

In above-mentioned each execution mode, the CQI of each frequency band during from terminal transmission to the base station, can transmitted in the ascending control channel of each frequency band, for example each CQI of all frequency bands of transmission in the ascending control channel of dominant frequency band.

When using the ascending control channel transmission CQI of each frequency band, use the structure example of Figure 15.And, in this structure example, do not describe uplink transmission data Du, but can give control channel yet these data Du multiplexing transmission.And this structure example has been imagined the situation that receives pilot frequency channel signal for a plurality of frequency bands simultaneously.

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

The above-mentioned CQI value that will calculate according to each frequency band is transmitted in the control channel of separately frequency band respectively.At this moment, can also transmit other control channel signals in the lump.Can also transmit uplink transmission data in the lump.

The above-mentioned CQI that is calculated gets in reentrant pathway 77 in the latter half of Figure 15, in encoding section 78, with its coding, after in modulation portion 112, having carried out modulating, carries out the T/F conversion through S/P portion 137, IFFT portion 138 and P/S portion 139.In GI insertion section 140, insert GI then, convert corresponding frequency band respectively into and send through antenna AT.

As stated, with above-mentioned execution mode likewise, can be to the CQI of each frequency band of base station transmits (status transmission).In addition, can be the basis with the CQI (status transmission) that the terminal is sent here, the frequency band that communication environments is good is chosen as the dominant frequency band.Likewise, can with communication environments preferably frequency band be chosen as the expansion frequency band.Like this, same with above-mentioned execution mode, can improve transmission characteristic through selecting better frequency band, also owing to the number of times that sends once more that has reduced data, so also can improve transmission speed.

Next about the situation of all CQI of the ascending control channel transmission of using specific frequency band, adopt the structure example of above-mentioned Figure 25.Use the situation of ascending control channel identical with above-mentioned according to each frequency band, calculate the CQI under each frequency band.In above-mentioned multiplexing (Mux) 80, these result of calculations being compiled is after one, in encoding section 78, encodes.After in modulation portion 112, having carried out modulation then, carry out the T/F conversion, in GI insertion section 140, insert GI then through S/P portion 137, IFFT portion 138 and P/S portion 139.Carry out frequency inverted through circuit 141,142 afterwards and send from antenna AT.

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

As stated, with above-mentioned execution mode likewise, can be to the CQI of each frequency band of base station transmits (status transmission).In addition, can be the basis with the CQI (status transmission) that the terminal is sent here, the frequency band that communication environments is good is chosen as the dominant frequency band.Likewise, can be chosen as the expansion frequency band by the frequency band that communication environments is good.Like this, can improve transmission characteristic, also owing to the number of times that sends once more that has reduced data, so can improve transmission speed through selecting better frequency band.

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

Originally the 6th execution mode is disclosed is characterised in that; For each of a plurality of frequency bands (frequency band 1～frequency band 4), with (i) frequency band identification number, (ii) use/ use, (iii) use/ use as the dominant frequency band and (at least 1 the other side's communicator of encoding and be transferred among the i～iv) of each information during (iv) present situation is kept as the expansion frequency band.

Figure 26 is the figure of the table of the expression high efficiency of transmission that is used to explain service band information.An example of the correspondence of table 1 expression service band-frequency band number, table 2 and table 3 illustrate the 1st example and the 2nd example respectively for service band-use/untapped establishing method.

In the above-mentioned service band transmission of Information of above-mentioned each execution mode, for example through the bandwidth assignment number is transmitted this number, thereby the situation of comparing transmission frequency value itself can be cut down the control channel information amount.Use above-mentioned table 1～table 3 explanation object lesson.And express here that to establish the frequency band that can in communication system integral body, use be 800 [MHz]～820 [MHz], as Fig. 9, it is divided into the example that 4 frequency bands use.

At first, each frequency band difference allocated frequency band number (1,2,3,4) shown in the his-and-hers watches 1.According to such setting of table 2 which frequency band is used as the dominant frequency band then, which frequency band is used as expansion frequency band (perhaps not using).

For example be " use " this moment at frequency band 1, with frequency band 2 as " dominant frequency band ", with frequency band 3 as " expansion frequency band ", when frequency band 4 is " use ", such control data " yy1100zz " below becoming, yy and zz are " 01 " perhaps " 10 " here.

And, though here according to the sequentially built of frequency band 1, frequency band 2, frequency band 3, frequency band 4 above-mentioned control data, as long as this order can be discerned at transmitter side and receiver side, then which kind of in proper order can.But also can increase and decrease the quantity of frequency band arbitrarily.And then, though for example clear here continuous 4 frequency band also can be to have the not discontinuous frequency band of service band on the way.

As stated,, compare the for example situation of the value of the centre frequency of transmission band itself, can cut down amount of information through encode (tabulationization).

And then as shown in table 3, can also be arranged on behaviour in service does not have the situation of change, i.e. setting under the situation of " present situation is kept ".

As stated, through service band information is encoded (tabulationization), data length that can compression control signal.Therefore, in the latter, reduced the ratio of transmission data and control channel information, thereby the efficiency of transmission of transmission data improves.

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

The disclosed characteristic of this 7th execution mode is shown at first below.

I) 1 expansion frequency band or the continuous expansion frequency band more than 2 are distributed on frequency axis and the continuous frequency band of dominant frequency band,

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

Iii) insert junk and be transferred to the other side's communicator for the part of the not service band of following above-mentioned isolated expansion frequency band.And the figure as this 7th execution mode of optimal representation has Figure 27 and above-mentioned Figure 22.

Figure 27 is the figure of the dynamic change example of expression expansion frequency band, and above-mentioned Figure 22 representes to select the situation of continuous expansion frequency band, and is relative therewith, and Figure 27 representes to carry out the situation of the selection (with reference to the 4th section of this figure) of discontinuous expansion frequency band.And the view of the view of Figure 27 and above-mentioned Figure 22 is identical.Specify below.

At first the continuous situation of frequency band is expanded in explanation, and above-mentioned Figure 22 has represented by Continuous Selection the situation of expansion frequency band.Wherein, expressed the situation that will be chosen as the expansion frequency band with the paired continuous frequency band of dominant frequency band as an example.In the mode of this Figure 22, because expansion frequency band and dominant frequency band are continuous, so compare discontinuous situation (Figure 27), it is convenient that signal processing becomes.And, about sending action and receive action, with explain in above-mentioned each execution mode identical.

On the other hand, in Figure 27, represented the discontinuous situation of expansion frequency band (the 4th section) as stated.Like this, but can according to the service band at terminal, communication environments and with other the compatibility at terminal, come dominant frequency band or adjacent expansion frequency band are selected to expand frequency band discontinuously.

And, set to cross over the subcarrier (with reference to the SC of the dotted line of Figure 22) of continuous frequency band in the explanation so far, but, the subcarrier of crossing over 2 frequency bands also can be set come correspondingly to increase the transmission amount of information according to the behaviour in service of other-end.

In addition, in the receiver side terminal, the signal that becomes above-mentioned discontinuous frequency band does not receive, and perhaps this signal is handled as junk by the strong hand.Thus, even the expansion frequency band is discontinuous, also can not receive to receive with hindering.

As stated, through setting discontinuous expansion frequency band, but can consider that the behaviour in service of service band, communication environments and the other-end at terminal selects neatly to expand frequency band.And the frequency service efficiency is more improved.

[the 8th execution mode: make the number of sub in each frequency band constant]

Originally the 8th execution mode is disclosed is characterised in that, makes the steady state value of the bandwidth separately of a plurality of frequency bands (frequency band 1～frequency band 4) for regulation, and the quantity of a series of subcarrier in the frequency band separately also is the steady state value of stipulating.

And the view of the view of these Figure 28～Figure 30 and above-mentioned Figure 22 and Figure 24 and Figure 27 etc. is about the same; In Figure 22, Figure 24, Figure 27 etc., use actual waveform to represent; Relative therewith, in Figure 28～Figure 30, replace the waveform of the sort of reality and only represent as the piece of subcarrier.This is in order to be easy to this 8th execution mode of explanation.That is, be easy to visually represent " band unit " this notion with understanding.And term used among Figure 28～Figure 30 was all explained except " processing delay ".This what is called processing delay for example with reference to Fig. 4, means after service band information If is imported into service band configuration part 25, generated the band setting index signal Sb required time delay of processing till the parameter setting in each circuit part that is through with again.

Usually in the communication mode that uses the such a series of subcarrier of multicarrier transmission mode (QFDM and MC-CDMA etc.), when carrying out the change of bandwidth, it is very common changing with subcarrier unit.At this moment, must set use/use with subcarrier unit.In addition,, all need recognize use/untapped signal processing, might make the setting of frequency band become numerous and diverse and complicated with subcarrier unit no matter sending processing or receiving in the processing.And then carrying out under the multiplexing situation of user, between the user, producing the use/untapped needs of each subcarrier of control, its result causes the reduction of frequency service efficiency.

So in this 8th execution mode; But the service band that communication system is whole is divided into a plurality of frequency bands (frequency band 1～frequency band 4); On the basis of " quantity of subcarrier is constant " in each frequency band that this is cut apart, use one or more frequency band to communicate the transmission between device simultaneously.Thus, can realize the improvement of frequency service efficiency.

Particularly, for example establishing a frequency band is 5 [MHz], and the number of sub in this frequency band is 25.Set a plurality of this frequency bands, make above-mentioned service band variable with band unit.Among above-mentioned Figure 28～Figure 30, represented the object lesson of the frequency band expansion under the band unit.The transverse axis of each figure is represented bandwidth, and a piece that has applied hachure is represented a frequency band, is located in this frequency band and has inserted a plurality of subcarriers.Think with Fig. 9 be that frequency band 1, frequency band 2, frequency band 3, frequency band 4 get final product likewise from left.

Expression is with the situation of frequency band 1 as the dominant frequency band in Figure 28, and expression is with the situation of frequency band 2 as the dominant frequency band in Figure 29.And in Figure 30 expression in time through and change the example of the setting of expansion frequency band, and expression comprises that its expansion frequency band is discontinuous situation (with reference to the 6th period).And, described in the concrete action such as above-mentioned execution mode of transmitting-receiving.

As stated, can easily make service band variable, and can improve the service efficiency of frequency.Compare with subcarrier unit and make the variable situation of service band, above-mentioned transmitting-receiving action becomes more easy, and the structure of transceiver also becomes simple.

[the 9th execution mode: making number of sub and subcarrier bandwidth in each frequency band is constant together]

The disclosed characteristic of this 9th execution mode is following.

I) each bandwidth that makes a plurality of frequency bands (frequency band 1～frequency band 4) is the steady state value of regulation, and the bandwidth that makes each subcarrier in the frequency band separately also is the steady state value of regulation.

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

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

Its result, the mutual difference of frequency band only is on the center frequency value separately.Thus, base band signal process and frequency band are compared the 8th execution mode irrespectively by homogenization, and the structure of transceiver is more easy.

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

The disclosed characteristic of this 10th execution mode is following.

I) in order to judge needs/need not expand frequency band, calculate poor (S1-S2) of needed required transmission speed S1 of anticipation information exchange and the actual actual transmission speed S2 that is reached, according to this difference positive and negative judge respectively needs and not needs expand frequency band,

Ii) here, above-mentioned actual transmission speed is through obtaining from the quantity of the transmission data message that quantity calculated of employed frequency band and the transmission interval of this transmissions data message.

Figure 31 is the figure of structure example of the communicator (transmitter side) of expression the 10th execution mode.

Figure 32 is the routine flow chart of action of the device of expression Figure 31.

At first with reference to Figure 31, the structure of Ben Tu and above-mentioned Fig. 5 (Fig. 3 too) much at one, just imported on the frequency band selection/configuration part 85 shown in this figure left end (15 distortion) and actual transmission speed calculating part 86 these aspects different.

Then with reference to Figure 32, this action does,

Step S91: confirm required transmission speed,

Step S92: confirm to send data volume,

Step S93: calculate actual transmission speed.

Step S94: each velocity amplitude with step S91 and step S93 is that the basis judges whether to be necessary to expand service band, establishes to have this necessity.

Step S95: select the expansion frequency band, and confirm to change regularly,

Step S96: transmission should change regularly with it by the expansion frequency band in down control channel.

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

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

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

Explanation particularly again; In above-mentioned the 1st execution mode; Only be the basis with required transmission speed; Confirm the quantity of the use of expansion frequency band/do not use and expand frequency band, and in this 8th execution mode, consider that also the actual actual transmission speed and the difference of required transmission speed carry out the expansion of frequency band and perhaps dwindle.

Re-use Figure 31 and Figure 32 explains concrete example.And the omission part identical with the 1st execution mode.

If the required transmission speed Rd of certain transmission data Du is 10 [Mbps], use dominant frequency band and expansion frequency band to transmit.At this moment, according to from the quantity of the transmission data that quantity calculated of service band and send at interval, can use the actual transmission speed calculating part 86 of Figure 31 to calculate actual actual transmission speed Ra.Relatively this actual transmission speed Ra and required transmission speed Rd in above-mentioned selection/configuration part 85 increase (expansion) service band when actual transmission speed Ra is low.In addition, for example ought be judged as actual transmission speed Ra and surpass required transmission speed Rd significantly,, cut down (dwindling) service band even when having reduced service band and also can keep required transmission speed Rd.

As stated, can both satisfy required transmission speed, realize the raising of frequency service efficiency again.And, except said method, can also return from the data of base station transmits whether be transferred to terminal (ACK/NACK) to the base station, calculate actual transmission speed based on this, make service band variable.In addition, can also be the basic calculation transmission speed with the data volume from base station transmits at the terminal, and return the base station, be that the basis makes service band variable with this value.

[the 11st execution mode: the expansion of service band]

Figure 33 is the figure that is used to explain this 11st execution mode, and the part that should be noted that especially is " frequency band in the restriction " and " whole frequency band after lifting restrictions ".The disclosed characteristic of this 11st execution mode is shown here as follows.

I) carry out each other in the communication system of exchange of information at communicator (10,20) coming through the multicarrier transmission mode under a series of subcarrier; In a plurality of dividing frequencybands (frequency band a～frequency band d) that constitute in that the whole frequency band (with reference to " whole frequency band after lifting restrictions " of Figure 33) that should distribute to this communication system is from now on cut apart; Current permission used under the situation (with reference to " frequency band in the restriction ") of its a part of dividing frequencyband (" frequency band a "); The dividing frequencyband " frequency band a " that allows this use is further divided into 1 or a plurality of frequency bands (like the frequency band 1～frequency band 4 in the 1st～the 10th execution mode) to be used; And at current confined other dividing frequencyband (frequency band b, frequency band c, frequency band d), be divided into 1 or a plurality of frequency bands (like the frequency band 1～frequency band 4 of the 1st～the 10th execution mode) similarly for each.Then; When having removed this restriction from now on; Each of the current untapped a plurality of dividing frequencybands that constitute for cutting apart whole frequency band (frequency band b～frequency band d); Use immediately with the above-mentioned current dividing frequencyband that is allowed to use (frequency band a) be divided into 1 perhaps a plurality of frequency bands use identical utilization

Ii) here, above-mentioned whole frequency band is cut apart and a plurality of dividing frequencybands (frequency band a～frequency band d) of constituting have constant bandwidth each other, and the quantity of the subcarrier in this each dividing frequencyband and bandwidth have steady state value each other.

Explanation particularly again; According to the compatibility of other communication systems, the operable frequency band of this communication system (perhaps base station) is limited, afterwards; Transfer to the reason of elsewhere etc. through the frequency of utilization of above-mentioned other communication systems, the situation of this restriction might occur removing.

When imagining this situation, service band in the above-mentioned restriction (" the frequency band a in the restriction ") and above-mentioned execution mode likewise are divided into one or more frequency band use.And this moment, with confined frequency band (frequency band b, frequency band c, frequency band d), also be divided into one or more frequency band respectively.And, but preferably with same band cut apart service band (frequency band a) with the restriction in each frequency band (frequency band b～frequency band d).Figure 33 comes to this and cuts apart with same band.And in Figure 33, service band is restricted to frequency band a and uses as a frequency band, is 3 frequency bands (frequency band b～frequency band d) with the band segmentation in the restriction, but these frequency bands b～d is current can't to be used owing to restriction makes.And preferably number of sub in these frequency bands and subcarrier bandwidth are constant.

And since establish in the restriction frequency band be one (frequency band a), so can't expand service band.According to this 11st execution mode, after having removed above-mentioned restriction, service band is 4 (frequency band a～d), can transfer to immediately in the utilization of above-mentioned execution mode.

Through setting frequency band as stated, thereby, when having removed restriction afterwards, can shift immediately through system employs of the present invention although current service band is limited.It can realize the utilization flexibly of communication system.

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

According to an aspect of the present invention; A kind of communicator is provided; This communicator is accommodated in use and carries out in the communication system of information exchange based on the multicarrier transmission mode of a series of subcarrier each other at communicator; It is characterized in that; From setting specific frequency band a plurality of frequency bands of constituting to being assigned to that whole frequency band on this communication system is cut apart, use this specific frequency band to transmit service band information, said service band information is used to confirm should use which of remaining this frequency band each other at above-mentioned communicator.

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

According to another aspect of the present invention, as the expansion frequency band, this expansion frequency band mainly transmits further data message with at least 1 frequency band that sets in the frequency band of removing in above-mentioned a plurality of frequency bands outside the above-mentioned dominant frequency band.

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

According to another aspect of the present invention, when having a plurality of above-mentioned communicator, in above-mentioned a plurality of frequency bands each is set above-mentioned dominant frequency band respectively separately, and distribute each this dominant frequency band corresponding in these a plurality of communicators each.

According to another aspect of the present invention, the above-mentioned communicator more than 2 uses same above-mentioned dominant frequency band simultaneously through time-multiplexed and/or extended code is multiplexing.

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

According to another aspect of the present invention, the frequency band that the above-mentioned dominant frequency band in above-mentioned a plurality of frequency band should be occupied passes through in time and can change.

According to another aspect of the present invention, judge the quality of the communication environments between above-mentioned communicator, the frequency band of selecting the frequency band of communication environments best in above-mentioned a plurality of frequency band or being equivalent to best communication environments is set at above-mentioned dominant frequency band.

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

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

According to another aspect of the present invention, the judgement of the quality of above-mentioned communication environments is carried out all above-mentioned a plurality of frequency bands successively or simultaneously.

According to another aspect of the present invention, the judged result with the quality of above-mentioned communication environments is transferred to the other side's communicator through the control channel under the specific above-mentioned frequency band.

According to another aspect of the present invention, make be set at above-mentioned expansion frequency band in above-mentioned a plurality of frequency band 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, the frequency band of selecting to be equivalent to best communication environments in above-mentioned a plurality of frequency band is set at above-mentioned expansion frequency band.

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

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

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

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

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

According to another aspect of the present invention; But according among the frequency of utilization of this communicator, the required transmission speed of behaviour in service and above-mentioned data message of quality, each this frequency band of communication environments under each above-mentioned frequency band at least 1 judges the setting of above-mentioned expansion frequency band or the necessity that changes.

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

According to another aspect of the present invention, these both sides of frequency band that frequency band that the above-mentioned dominant frequency band in above-mentioned a plurality of frequency band should occupy and above-mentioned expansion frequency band in this a plurality of frequency bands should be occupied do not overlap each other, and pass through in time and can change.

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

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

According to another aspect of the present invention, each of above-mentioned a plurality of frequency bands is carried out the quality of the above-mentioned communication environments between above-mentioned communicator respectively and judge, will be transferred to the other side's communicator about multiplexing compiling of the judged result separately of this all frequency bands.

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

According to another aspect of the present invention; About in above-mentioned a plurality of frequency bands each; Encode, and be transferred to the other side's communicator at least 1 in each information during the above-mentioned expansion frequency band of the above-mentioned dominant frequency band of frequency band identification number, use/be not used for, use/be not used for and present situation kept.

According to another aspect of the present invention, 1 above-mentioned expansion frequency band or this continuous expansion frequency band more than 2 are distributed on frequency axis and the continuous above-mentioned frequency band of above-mentioned dominant frequency band.

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

According to another aspect of the present invention, insert junk for the part of the not service band of following above-mentioned isolated expansion frequency band and be transferred to the other side's communicator.

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

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

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

According to another aspect of the present invention; In order to judge the above-mentioned expansion frequency band of needs/do not need; Calculate needed required transmission speed S1 of the above-mentioned information exchange of anticipation and the actual actual transmission speed S2 that is reached poor (S1-S2), judge needs and this expansion frequency band of needs not respectively according to this difference positive and negative.

According to another aspect of the present invention, above-mentioned actual transmission speed is through obtaining from the quantity of the transmission data message that quantity calculated of employed above-mentioned frequency band and the transmission interval of this transmissions data message.

According to another aspect of the present invention; A kind of communication system also is provided; This communication system is used and is carried out the exchange of information each other at communicator based on the multicarrier transmission mode of a series of subcarrier; It is characterized in that in a plurality of dividing frequencybands that constitute in that the whole frequency band that should distribute to this communication system is from now on cut apart, current allows to use under the situation of its a part of dividing frequencyband; The dividing frequencyband that allows this use is further divided into 1 or a plurality of frequency bands to be used; And, be divided into 1 or a plurality of frequency bands similarly, when having removed this restriction from now on for current confined other each of above-mentioned dividing frequencyband; Each of the current untapped above-mentioned a plurality of dividing frequencybands that constitute for cutting apart above-mentioned whole frequency band, be suitable for immediately with the above-mentioned current dividing frequencyband that is allowed to use is divided into 1 perhaps a plurality of frequency bands use identical utilization.

According to another aspect of the present invention, above-mentioned whole frequency band is cut apart and a plurality of dividing frequencybands of constituting have constant bandwidth each other, and the quantity of the above-mentioned subcarrier in this each dividing frequencyband and bandwidth have steady state value each other.

Claims

1. communicator, the multicarrier transmission mode that this communicator is accommodated in through using a plurality of subcarriers carries out it is characterized in that above-mentioned communicator comprises in the communication system of information exchange at communicator each other:

Receiver; This receiver is configured to use the specific frequency band of from a plurality of frequency bands of distributing to above-mentioned communication system, selecting to receive service band information; Above-mentioned service band information indication service band; This service band comprises above-mentioned specific frequency band at least one frequency band in addition, and above-mentioned service band is used for carrying out data information transmission each other at above-mentioned communicator;

Wherein, after above-mentioned receiver received above-mentioned service band information, above-mentioned receiver used the indicated service band receiving data information of above-mentioned service band information.

2. communicator according to claim 1, wherein, after above-mentioned receiver received above-mentioned service band information, above-mentioned receiver uses the indicated service band of above-mentioned specific frequency band and above-mentioned service band information, and the two came receiving data information.

3. communication system, this communication system is carried out information exchange through the multicarrier transmission mode that uses a plurality of subcarriers between base station and mobile radio station, and above-mentioned communication system comprises:

The base station; This base station is configured to generate service band information; This service band information indication service band; This service band comprises at least one frequency band beyond the specific frequency band, and above-mentioned base station is configured to use the specific frequency band of from a plurality of frequency bands of distributing to above-mentioned communication system, selecting to send above-mentioned service band information, and above-mentioned service band is used between base station and mobile radio station, carrying out data information transmission; And

Mobile radio station, this mobile radio station are configured to use above-mentioned specific frequency band to receive above-mentioned service band information from above-mentioned base station, and above-mentioned mobile radio station is configured to use the indicated service band of service band information that receives from above-mentioned base station to come receiving data information.