CN101371476A - Method and system for supporting scalable bandwidth - Google Patents
Method and system for supporting scalable bandwidth Download PDFInfo
- Publication number
- CN101371476A CN101371476A CNA2007800024663A CN200780002466A CN101371476A CN 101371476 A CN101371476 A CN 101371476A CN A2007800024663 A CNA2007800024663 A CN A2007800024663A CN 200780002466 A CN200780002466 A CN 200780002466A CN 101371476 A CN101371476 A CN 101371476A
- Authority
- CN
- China
- Prior art keywords
- bandwidth
- signal
- frequency band
- frequency
- signals
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
Methods and systems for supporting scalable bandwidth in radio telecommunications networks are provided. When signals are transmitted to user equipments using a transmitter of a radio telecommunication network, the signals are frequency multiplexed, each signal lying within a frequency band having an equal or narrower bandwidth than a reception bandwidth of each user equipment that is to receive a signal. Then the multiplexed signal is converted to a time domain signal.
Description
Technical field
The present invention relates to be used in the radio circuit support the method and system of scalable bandwidth.In a preferred embodiment, the invention provides the method for in the receiver of the transmitter of the base station (BTS) of the radio circuit that uses OFDM (OFDMA) and subscriber equipment (UE), using.
Background technology
In order to satisfy the expection growth of future to the user's request of high data rate and improved service quality, 3GGP has determined that it will be desired that long-run development is used at the new network that medium is disposed, and this new network provides up to the data rate of 100MBPS and at uplink direction in the down link direction data rate up to 50MBPS is provided.Have the more high data rate that can accept quality in order to obtain this, this network will be realized OFDMA and have the maximum downlink transmission bandwidth of 20MHz.
Although showed the peak bandwidth standard of the 20MHz of expectation above, probably because also there is the sub-district with lower bandwidth (for example 5MHz, 10MHz, 15MHz or even 1.25MHz or 2.5MHz) in certain reason.Only the narrow bandwidth radio-frequency spectrum is used in transmission in the specific region for example because not every sub-district is upgraded to 20MHz ability completely simultaneously during the deployment phase of network, or because spectrum availability limits, and these lower bandwidths can occur.
What also can expect is, has different receiving abilities, promptly the supported maximum UE that receives bandwidth of UE (portable terminal) can with this network service.As will be appreciated, the handheld device of high ability is complicated more probably and therefore expensive more, and thereby the certain user will be ready that any sacrifice in performance is to obtain more cheap handheld device.
Therefore, have the needs be used for such system and method, it allows different UE that receive bandwidth to operate in having the different networks that send bandwidth, and preferably it is convenient to effectively share transmitter bandwidth between the UE in being in this environment.
Summary of the invention
In first aspect, the invention provides a kind of method of handling a plurality of signals, be used to use and have the transmission that first transmitter that sends the radio circuit of bandwidth proceeds to two or more subscriber equipmenies (UE), wherein at least one UE has the maximum reception bandwidth less than the transmission bandwidth of transmitter, this method comprises: a plurality of signals are carried out channeling to be used to send to UE, make in multiplexing signal, in a plurality of signals each is positioned at such frequency band, and this frequency band has the bandwidth of the reception bandwidth that equals or be narrower than each UE that wants received signal; And be time-domain signal with multiplexing conversion of signals.
In a plurality of signals each preferably takies the first one or more sub-carrier frequency that sends in the bandwidth.
Preferably carrying out multiplexing conversion of signals is the step of time-domain signal, to keep the mutually orthogonal property of all subcarriers that form multiplexing signal.
The step that preferably with multiplexing conversion of signals is time-domain signal comprises, the multiplexing signal of size with the transmission bandwidth that depends on transmitter is carried out contrary fast fourier transform (IFFT).
In a preferred embodiment, this method is included in the frequency band that location in the multiplexing signal comprises the signal that is used for given UE, makes that in centre frequency and the preset frequency group of this frequency band aims at.
Preferably the preset frequency group separates in sending frequency band equably.
In particularly preferred embodiment, when the transmission bandwidth had 1201,901 or 601 subcarriers, preset frequency was separated by 150 subcarriers.
Preferably the frequency band that is positioned at of UE signal is defined as being expected that the camp band of the UE that receives this signal comprises.
In second aspect, the invention provides a kind of transmitter that uses radio circuit a plurality of signals are sent to the method for two or more UE, comprise that use comes processing signals according to the method for the embodiment of first aspect present invention; Further handle time-domain signal; And send described time-domain signal.
In the third aspect, the invention provides a kind of method that in UE, receives signal with first transmission bandwidth, described signal forms by a plurality of signals are carried out channeling, make each signal in the multiplexing signal be positioned at such frequency band, this frequency band has the bandwidth of the reception bandwidth that equals or be narrower than each UE that will use signal, and this method comprises: quarter on first first frequency band that sends in the bandwidth; Receive the signal section in the whole reception bandwidth that falls into UE substantially; The time-domain signal that is received is converted to the frequency-region signal of bandwidth with the reception bandwidth that equals UE substantially.
This method also can comprise the frequency location of reception signaling data with the indication camp band.
This method can comprise that carrying out fast Fourier transform (FFT) is converted to frequency-region signal so that institute is received time-domain signal.Preferably determine the FFT size by the reception bandwidth of UE.Most preferably be to cover the whole reception bandwidth of UE basically by the frequency-region signal of FFT generation.
Under the situation of reception bandwidth less than the transmission bandwidth of transmitter of UE, this method can comprise the predetermined portions of tunable receiver with the bandwidth of reception signal transmitted.
In aspect another, the invention provides a kind of operation and have first method of transmitter that sends the radio circuit of bandwidth, so that can communicate by letter with a plurality of UE, the maximum that among the UE at least one has less than the transmission bandwidth of transmitter receives bandwidth, this method comprises: be not more than among a plurality of UE on the common band of bandwidth that minimum maximum receives bandwidth having, send in the following type channels at least one to one or more UE: broadcast channel, paging channel, synchronizing channel, shared channel.
Most preferably be that common band is positioned as with the centre frequency of transmitter bandwidth and aims at.
This method can comprise the UE that signals in the idle pulley, to quarter on the frequency band that comprises described common band.
Will move under the situation of activity pattern from idle pulley (UE quarters on the frequency band that comprises described common band idle pulley) at the UE that has less than the reception bandwidth of the transmitting capacity of transmitter, this method can comprise signal to UE to receive and/or to send in the frequency band that does not comprise described common band.
In another aspect, the invention provides a kind of method of operating the UE that communicates by letter with the transmitter of radio circuit, transmitter has the transmission bandwidth greater than the reception bandwidth of UE, and this method comprises; When being in idle pulley with corresponding first frequency band of predetermined portions that sends bandwidth in receive and/or send data, and when be in activity pattern, in not comprising second frequency band of first frequency band, receive and/or the transmission data.
This method can comprise from the transmitter received signal to change reception and to send frequency band.
Preferably, the center of first frequency band is in the transmission bandwidth of transmitter.More preferably, first frequency band has the bandwidth that is equal to or less than maximum frequency acceptance band minimum among the UE.
In aspect another, a kind of method of operating the base station in radio circuit is provided, described base station is configured to send the signal with first transmission bandwidth, this method comprises: definition will be by a plurality of camp band of subscriber equipment use in sending bandwidth, and at least one in the wherein said camp band has less than the bandwidth that sends bandwidth; And to receive bandwidth based on the maximum of UE be each user equipment allocation camp band.
Preferably, this method is included in and sends one or more channels that a plurality of UE share on the common band that sends in the bandwidth.
This method also can comprise and signals to described UE to quarter on the common band when subscriber equipment will enter idle condition.This method also can comprise and signals to described UE to quarter on the camp band that does not comprise common band when subscriber equipment will enter active state.
In another aspect, the invention provides a kind of equipment that is used in the first transmission bandwidth, sending signal to a plurality of receivers at radio circuit, this equipment comprises: be used for multiplexing a plurality of frequency-region signal to send to the multiplex machine of receiver, make in multiplexing signal, in a plurality of signals each is positioned at such frequency band, and this frequency band has the bandwidth of the reception bandwidth that equals or be narrower than each receiver of wanting received signal; And to be used for multiplexing conversion of signals be that time-domain signal is to send to the device of receiver.
This equipment also can comprise the transmission band allocation means, and it is configured to give each signal that will send with bandwidth assignment, makes for each signal, aims at for one in the centre frequency of frequency band and the preset frequency group.
In aspect another, the invention provides a kind of receiver that is suitable for receiving signal with first transmission bandwidth, described signal forms by a plurality of signals are carried out channeling, make each signal in the multiplexing signal be positioned at such frequency band, this frequency band has the bandwidth of the reception bandwidth that equals or be narrower than each receiver that will use signal, and this receiver comprises: first of definite received signal thereon sends the device of first frequency band in the bandwidth; Be configured to receive the receiver of the part that falls into the transmission signal in first frequency band; Received signal is converted to the device of the frequency-region signal of bandwidth with the reception bandwidth that equals receiver substantially.
In another aspect, the invention provides and a kind ofly comprise that one or more assemblies are to realize the base station according to any one method in the aforementioned aspect of the present invention.
In another aspect, the invention provides and a kind ofly comprise that one or more assemblies are to realize the subscriber equipment according to any one method in the aforementioned aspect of the present invention.
Description of drawings
Now will only by non-restrictive example the preferred embodiments of the present invention be described with reference to the accompanying drawings, wherein:
Fig. 1 has described the base station transmitter of operating and the schematic diagram of two UE in network according to the present invention;
Fig. 2 illustrates according to the present invention the diagrammatic sketch that UE changes in the network operating between idle condition and active state;
Fig. 3 show be used in the 20MHz bandwidth cell according to embodiments of the invention have 5MHz, variety of option that the UE map bandwidth of 10MHz, 15MHz and 20MHz receiving ability is distributed;
Fig. 4 show be used in the 15MHz bandwidth cell according to embodiments of the invention have 5MHz, variety of option that the UE map bandwidth of 10MHz, 15MHz and 20MHz receiving ability is distributed;
Fig. 5 show be used in the 10MHz bandwidth cell according to embodiments of the invention have 5MHz, variety of option that the UE map bandwidth of 10MHz, 15MHz and 20MHz receiving ability is distributed.
Embodiment
Using the term description preferred embodiment that 3GPP adopted will be easily, yet the present invention should not be regarded as being limited to according to the application in the network of 3GPP standard operation.
To the preferred embodiments of the present invention be described having to receive in the context of ofdma communication network of UE that bandwidth is 5MHz, 10MHz, 15MHz and 20MHz now.Suppose that the maximum reception bandwidth that lowest capability UE supports in the network is 5MHz.This is rational hypothesis, because current WCDMA UE has the reception bandwidth of 5MHz, and is desirably in following UE and will supports this standard at least.Given should hypothesis, be to be further appreciated that it is 10MHz or above situation that the argumentation here is limited to bandwidth of cell, because for the lower bandwidth of cell of for example 5MHz (or following), all UE will be seen as the receiving ability with the cell transmission bandwidth of equaling by network.In a preferred embodiment, be used for down link and send the parameter of processing as shown in form 1.
The parameter that is used for the down link delivery plan in the form 1-preferred embodiment
Yet should be appreciated that to the invention is not restricted to above-mentioned specific example bandwidth and UE ability, but can be generally applicable to have the network of scalable transmission bandwidth and the network of the UE of different reception bandwidth.
Fig. 1 has described the diagram according to the base station transmitter 100 of embodiment of the invention operation.In the present embodiment, base station 100 sends to two UE 102 and 104.UE 102 has the reception bandwidth of 5MHz, and UE 104 has the reception bandwidth of 20MHz.
In order to send to two UE so that identical transmission time interval (TTI) is next, base station 100 needs the multiplexed signal that will send.In a preferred embodiment, before being converted to time-domain signal, whole frequency multiplexed signal use single IFFT piece 110 in frequency domain, to realize multiplexed.
The multiplexing scheme that uses among this embodiment is simple relatively, send bandwidth and be divided into two subcarriers 106 and 108, the data that wherein are used for UE1 102 on the piece of 301 continuous subcarriers that with DC1 is the center by multiplexed, and the data that are used for UE2 104 on the piece of remaining 900 subcarriers by multiplexed.Should be noted that wide 1201 subcarriers of the signal that is used for UE2 and be the center with DC2.
Shall also be noted that and to use different multiplexing schemes that for example allocation of subcarriers makes their by the scheme of staggered (as long as carry the subcarrier of the data that are used for particular UE be comprised in the maximum that is less than or equal to UE receive in the passband of bandwidth) between UE.
Under the situation that other UE sends, available transmission bandwidth can further be cut apart between UE in base station 100, is comprised in the maximum that is not more than UE and receives in the passband of bandwidth as long as distribute to the subcarrier of particular UE.
In case it is multiplexed to have carried out the frequency domain of UE data, contrary fast fourier transform (IFFT) 110 just is applied to the whole frequency band of transmitter to generate time-domain signal.In the illustrated embodiment, applied IFFT is 2048 IFFT, yet the available bandwidth that depends on transmitter can use other IFFT size (referring to top form 1).As mentioned above, cross over the whole set of subcarrier and only carry out an IFFT, rather than on each camp band, carry out independent IFFT.Owing to only need its size only to depend on the IFFT piece of transmitter bandwidth for each transmitter antenna, so this has simplified the design of base station transceiver.
As typical for the OFDMA system, next add Cyclic Prefix to time-domain signal 112 in the manner known to persons skilled in the art.Then, before being sent by antenna for base station 116, this signal stands further processing 114.Signal transmitted is received by one of UE 102 and 104 then.
Before the processing of discussing by UE 102 and 104 received signals, discuss the operation of UE tout court, and especially they can how to change between idle condition and active state be useful.
As is known to persons skilled in the art, UE will be in idle condition in most of times, and wherein its is carried out considerably less or do not carry out and sends and/or receive.In this state, UE keeps being tuned as special frequency band usually, and it is called camp band here.Idle state representation is a state 200 among Fig. 2.Sometimes UE moves to active state 206 with needs, for example to call out or to send or to receive other data.Active state is divided into MAC dormancy (MAC-Dormant) or MAC activity (MAC-Active) state, and is illustrated on Fig. 2 by the reference numerals states among Fig. 2 202 and 204.Use MAC active state 204 when quite enlivening when data send and/or receive, and send and/or reception activity use MAC resting state 202 when temporarily stopping when data.
When UE was in idle condition, it was necessary reading the broadcast channel (BCH) and the paging channel (PCH) that are used for band of position renewal and out of Memory for it termly.In addition, when UE was connected to network first, necessary for UE was to receive synchronizing channel and broadcast channel to obtain initial time and Frequency Synchronization and information of searching sector from network.In order to promote these processes, in single frequency band (being called " common band " here), provide in these channels each according to embodiment of the invention network operating.In a preferred embodiment, the centrally aligned of the transmission frequency band of common band and transmitter.
In order to allow each UE that is connected to network can receive all signals that send on the common band, common band has the bandwidth that the maximum that is less than or equal to the minimum ability UE that operates in the network receives bandwidth.State in the use among the embodiment of hypothesis, this means that synchronizing channel, BCH, PCH and SCH are restricted to the frequency band of single 5MHz.
The receiver that must unnecessarily change reception (or being stationed) frequency band and ought retune them in case of necessity for fear of UE is to receive synchronizing channel, BCH, PCH and SCH, and the preferred embodiments of the present invention require all UE in the idle condition to quarter on the frequency band that comprises common band.For do not allow too many UE in common band, operate (except consume seldom or not the UE in the idle condition of consume system resources), when requiring UE or UE request to move to active state, network can require UE to move to different frequency bands, turns back to idle condition up to it.
For the distribution of camp band in the network with scalable transmitter and receiver bandwidth is described better, Fig. 3,4 and 5 show respectively 20MHz bandwidth cell, 15MHz bandwidth cell and 10MHz bandwidth cell be used to have 5MHz, exemplary band allocation that 10MHz, 15MHz and 20MHz receive the UE of bandwidth ability may.
Fig. 3 illustrate the 20MHz bandwidth cell be used to have 5MHz, exemplary band allocation scheme that 10MHz, 15MHz and 20MHz receive the UE of bandwidth.Bandwidth of cell is by frequency axis 300 expressions, and it is by illustrating frequency range from f
-600To f
+ 600The subcarrier (rather than passing through Hz) of 1201 subcarriers arrange in turn.Use the system parameters of showing in the form 1, this can find out that being equal to 20MHz sends bandwidth.With f
0It for the piece 302 at center the common band of the synchronizing channel (SYNCH), BCH, PCH and the SCH that wherein send the sub-district.
In this embodiment, defined three possible 15MHz frequency acceptance bands, promptly frequency band 306,308 and 310, and they are respectively with frequency f
0, f
-150And f
150Be the center.Because all these frequency bands 306,308 and 310 comprise common band 302, one of can quarter in these frequency bands so be in the 15MHz UE of idle condition or active state.
Also there is the 10MHz frequency band of three definition, is respectively with frequency f
0, f
-300And f
300Frequency band 312,314 and 316 for the center.Therefore frequency band 312 is unique 10MHz frequency bands that comprise common band 302, and is that unique 10MHz UE of being in idle condition or active state of allowing is stationed thereon 10MHz frequency band.The 10MHz UE that only is in the active state can quarter on one of non-central 10MHz frequency band 314 or 316.
There is the 5MHz frequency band of seven definition, is respectively with frequency f
0, f
-300, f
+ 300, f
-450, f
- 150, f
+ 150And f
+ 450Frequency band 318,320,322,324,326,328 and 330 for the center.With frequency f
0For the frequency band 318 at center is unique 5MHz frequency band that comprises common band 302, and therefore be that unique 5MHz UE of being in idle condition or active state of allowing is stationed thereon 5MHz frequency band.The 5MHz UE that only is in the active state can quarter on one of non-central 5MHz frequency band 320 to 330.If any one in the non-central 5MHz frequency band 320 to 330 will be used as the camp band that is in the UE in the idle condition, then UE will need to retune its receiver sometimes and be used for reception to common band that the band of position is upgraded and the broadcast channel (BCH) of out of Memory, and this does not expect.Also must reconfigure network to carry out paging (sending with other signal) in the common band outside, this does not expect yet.
Fig. 4 illustrate the 15MHz bandwidth cell be used to have 5MHz, exemplary band allocation scheme that 10MHz, 15MHz and 20MHz receive the UE of bandwidth.Bandwidth of cell is by frequency axis 400 expressions, and it is by illustrating frequency range from f
-450To f
+ 450The subcarrier (rather than passing through Hz) of 901 subcarriers arrange in turn.Use the system parameters of showing in the form 1, this can find out that being equal to 15MHz sends bandwidth.With the same among Fig. 3, with f
0It for the piece 302 at center the common band of the synchronizing channel, BCH, PCH and the SCH that wherein send the sub-district.
Have the 10MHz frequency acceptance band of three definition, promptly frequency band 406,408 and 410, and they are respectively with frequency f
0, f
-150And f
150Be the center.Because all these frequency bands 406,408 and 410 comprise common band 302, the 10MHz UE that is in idle condition or the active state can quarter on one of these frequency bands.
Also there is the 5MHz frequency band of three definition, is respectively with frequency f
0, f
-300And f
300Frequency band 412,414 and 416 for the center.Therefore frequency band 412 is unique 5MHz frequency bands that comprise common band 302, and is that unique 5MHz UE of being in idle condition or active state of allowing is stationed thereon 5MHz frequency band.The 5MHz UE that only is in the active state can quarter on one of non-central 5MHz frequency band 414 or 416.
Fig. 5 illustrate the 10MHz bandwidth cell be used to have 5MHz, exemplary band allocation scheme that 10MHz, 15MHz and 20MHz receive the UE of bandwidth.Bandwidth of cell is by frequency axis 500 expressions, and it is by illustrating frequency range from f
-300To f
+ 300The subcarrier (rather than passing through Hz) of 601 subcarriers arrange in turn.Use the system parameters of showing in the form 1, this can find out that being equal to 10MHz sends bandwidth.With the same in Fig. 3 and 4, with f
0It for the piece 302 at center the common band of the synchronizing channel, BCH, PCH and the SCH that wherein send the sub-district.
Have the 5MHz frequency acceptance band of three definition, promptly frequency band 508,510 and 512, and they are respectively with frequency f
0, f
-150And f
150Be the center.Therefore frequency band 508 is unique 5MHz frequency bands that comprise common band 302, and is that unique 5MHz UE of being in idle condition or active state of allowing is stationed thereon 5MHz frequency band.The 5MHz UE that only is in the active state can quarter on one of non-central 5MHz frequency band 510 or 512.
Use Fig. 3 as example, when the UE initiation will move to the request of active state (for example: upgrade its position, make a call or paging is responded), it uses the RACH (RACH) in the up link, and will receive response by the shared channel in down link (SCH) in common band.Need change to from the free time under the situation of active state at UE, system will instruct UE be tuned to non-central frequency band, if for example UE be 5MHz UE be tuned to frequency band 320,322,324,326,328 or 330, if perhaps UE have that 10MHz receives bandwidth be tuned to frequency band 314 or 316.This is in order to reduce the load on the common band 302.Under this state, UE will monitor shared control channel (SCCH) to receive shared data channel (SDCH) in this non-central frequency band.In a preferred embodiment, when not having connectedness, UE will move (maybe should move) the not busy state that makes the return trip empty, and wherein they will quarter on the center frequency-band that comprises common band.
Return Fig. 1 now, will describe the process that two UE 102 and 104 receive the signal of BTS 100 transmissions.In order to receive signal transmitted, UE 102 and 104 each its carrier frequency is tuned as suitable centre frequency, promptly be used for UE
1102 DC
1And be used for UE
2104 DC
2Because UE
1102 reception bandwidth constraints is only by UE
1102 use RF piece 118.1 to receive the 5MHz part that whole 20MHz sends bandwidth.On the contrary, because UE
2104 have 20MHz receives bandwidth, so (using RF piece 118.2) receives all transmission bandwidth, comprises the part that is intended to only send to UE1 in the signal transmitted (promptly on block of sub-carriers 106 multiplexed signal).
Next, received signal in UE 102 and 104, stands further RF and handles and analog-to-digital conversion respectively in piece 120.1 and 120.2.As appreciable, in a preferred embodiment, be 7.68MHz and 30.72MHz in the sample frequency of the digital sample of output place of piece 120.1 and 120.2 from form 1.In UE 102 and 104, in piece 122.1 and 122.2, remove Cyclic Prefix then.
Two UE carry out FFT (respectively in UE 102 and 104 124.1 and 124.2) then so that time-domain signal is converted to frequency-region signal.Because the initial radio tuning step of carrying out, thus by the reception bandwidth of UE, rather than send the position of expectation subcarrier in the frequency band by the sub-district, stipulate the size of performed FFT.As appreciable from form 1, UE
1With the FFT that always is to use at 512, because it has the reception bandwidth of 5MHz and attempts to extract the subcarrier of 301 expectations.In order to simplify UE, the size of performed FFT does not rely on other UE and whether has data multiplexed on the RF signal.Therefore, UE
2To always use 2048 FFT, receive bandwidth because it has 20MHz.Can use signaling data or other method to tell UE then
2Abandon the data on the subcarrier that sends in (or not decoding) frequency chunks 106.
The present invention should not be interpreted as being limited to reception described herein, public and camp band, because being defined in of these above-mentioned frequency bands is arbitrarily in a way.More () the frequency bands or still less of definable.For example in the 20MHz bandwidth cell, definable has f
-150And f
+ 150Between the 15MHz frequency band of any centre frequency, similarly, definable has f
-300And f
+ 300Between Anywhere the 10MHz frequency band of centre frequency.And, can be in any some place definition common band along the bandwidth of sub-district.Though think that this diagram frequency band described herein has minimized band overlapping and thereby minimized signaling and there is advantage in design complexity with regard to them.They also provide enough flexibilities, make system manage resource allocation to the UE of a large amount of different abilities of using same cell transmission bandwidth simultaneously effectively.And, send and the definition of frequency acceptance band, and the advantage of the mapping of physical channel (for example SCCH, SDCH and pilot channel) is that any UE will only see a kind of mapping quarter on which frequency band regardless of it.This expects, because this will reduce the complexity of UE implementation significantly.
Will be understood that the present invention open and definition should expand to according to text or accompanying drawing is mentioned or significantly all of two or more independent features are replaced combination in this specification.All these various combinations constitute each replacement aspect of the present invention.
Claims (19)
1. method of handling a plurality of signals, be used to use and have the transmission that first transmitter that sends the radio circuit of bandwidth proceeds to two or more subscriber equipmenies (UE), wherein at least one UE has the maximum reception bandwidth less than the transmission bandwidth of described transmitter, and described method comprises:
Described a plurality of signals are carried out channeling to be used to send to described UE, make in multiplexing signal, in described a plurality of signal each is positioned at such frequency band, and this frequency band has the bandwidth of the reception bandwidth that equals or be narrower than each UE that will receive described signal; And
With described multiplexing conversion of signals is time-domain signal.
2. the method for a plurality of signals of processing according to claim 1, each in wherein said a plurality of signals take the described first one or more sub-carrier frequency that sends in the bandwidth.
3. the method for a plurality of signals of processing according to claim 1 and 2, wherein carrying out with described multiplexing conversion of signals is the step of time-domain signal, with the mutually orthogonal property of all subcarriers of keeping the described multiplexing signal of formation.
4. according to the method for a plurality of signals of any one described processing in the aforementioned claim, wherein the step that is time-domain signal with described multiplexing conversion of signals comprises, the described multiplexing signal of size with the transmission bandwidth that depends on described transmitter is carried out contrary fast fourier transform (IFFT).
5. according to the method for a plurality of signals of any one described processing in the aforementioned claim, wherein said method also is included in the frequency band that location in the described multiplexing signal comprises the signal that is used for given UE, makes that in centre frequency and the preset frequency group of described frequency band aims at.
6. the method for a plurality of signals of processing according to claim 5, wherein said preset frequency group separates in described transmission frequency band equably.
7. the method for a plurality of signals of processing according to claim 5, wherein said transmission bandwidth has 1201,901 or 601 subcarriers, and described preset frequency is separated by 150 subcarriers.
8. a transmitter that uses radio circuit sends to the method for two or more UE with a plurality of signals, comprises that use handles described signal according to any one described method in the claim 1 to 7;
Further handle described time-domain signal; And
Send described time-domain signal.
9. one kind receives in UE and has first method that sends the signal of bandwidth, described signal forms by a plurality of signals are carried out channeling, make each signal in the multiplexing signal be positioned at such frequency band, this frequency band has the bandwidth of the reception bandwidth that equals or be narrower than each UE that will use described signal, and described method comprises:
Quarter on described first first frequency band that sends in the bandwidth;
Receive the described signal section in the whole reception bandwidth that falls into described UE substantially;
The time-domain signal that is received is converted to the frequency-region signal of bandwidth with the reception bandwidth that equals described UE substantially.
10. an operation has first method of transmitter that sends the radio circuit of bandwidth, so that can communicate by letter with a plurality of UE, the maximum that at least one among the described UE has less than the transmission bandwidth of described transmitter receives bandwidth, and described method comprises:
Be not more than among described a plurality of UE on the common band of bandwidth that minimum maximum receives bandwidth having, send in the following type channels at least one to one or more UE:
Broadcast channel, paging channel, synchronizing channel, shared channel.
11. the method for the UE that an operation is communicated by letter with the transmitter of radio circuit, described transmitter has the transmission bandwidth greater than the reception bandwidth of described UE, and described method comprises;
When being in idle pulley with corresponding first frequency band of the predetermined portions of described transmission bandwidth in receive and/or send data, and
When being in activity pattern, in not comprising second frequency band of described first frequency band, receiving and/or send data.
12. the method for an operation base station in radio circuit, described base station is configured to send the signal with first transmission bandwidth, and described method comprises:
Definition will be by a plurality of camp band of subscriber equipment use in described transmission bandwidth; And
Based on the foundation that is connected of the communication of described subscriber equipment, be each user equipment allocation camp band.
13. one kind comprises that one or more assemblies are to realize the base station according to any one described method in the aforementioned claim.
14. one kind is used for sending the equipment that sends signal to a plurality of receivers in the bandwidth at radio circuit first, described equipment comprises:
Be used for multiplexing a plurality of frequency-region signal to send to the multiplex machine of described receiver, make in described multiplexing signal, in described a plurality of signal each is positioned at such frequency band, and this frequency band has the bandwidth of the reception bandwidth that equals or be narrower than each receiver that will receive described signal; And
Being used for described multiplexing conversion of signals is that time-domain signal is to send to the device of described receiver.
15. the equipment that is used for sending at radio circuit signal according to claim 14, wherein the device that is time-domain signal with described multiplexing conversion of signals is carried out against fast fourier transform (IFFT) the described multiplexing signal of size with the transmission bandwidth that depends on described transmitter.
16. according to claim 14 or the 15 described equipment that are used for sending signal at radio circuit, wherein said equipment also comprises the transmission band allocation means, it is configured to give each signal that will send with bandwidth assignment, make for each signal, aim at for one in the centre frequency of described frequency band and the preset frequency group.
17. the equipment that is used for sending at radio circuit signal according to claim 16, wherein said preset frequency group separates in the transmission frequency band of described transmitter equably.
18. receiver that is suitable for receiving signal with first transmission bandwidth, described signal forms by a plurality of signals are carried out channeling, make each signal in the multiplexing signal be positioned at such frequency band, this frequency band has the bandwidth of the reception bandwidth that equals or be narrower than each receiver that will use described signal, and described receiver comprises:
Described first of definite received signal thereon sends the device of first frequency band in the bandwidth;
Be configured to receive the receiver of the part that falls into the transmission signal in first frequency band;
Received signal is converted to the device of the frequency-region signal of bandwidth with the reception bandwidth that equals described receiver substantially.
19. one kind comprises that one or more assemblies are to realize the subscriber equipment according to any one described method in the aforementioned claim.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2006900261 | 2006-01-18 | ||
| AU2006900261A AU2006900261A0 (en) | 2006-01-18 | Method and system for supporting scalable bandwidth | |
| AU2007200144 | 2007-01-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101371476A true CN101371476A (en) | 2009-02-18 |
Family
ID=40414057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007800024663A Pending CN101371476A (en) | 2006-01-18 | 2007-01-18 | Method and system for supporting scalable bandwidth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101371476A (en) |
-
2007
- 2007-01-18 CN CNA2007800024663A patent/CN101371476A/en active Pending
Non-Patent Citations (2)
| Title |
|---|
| NTT DOCOMO: "Physical Channel Concept for Scalable Bandwidth in Evolved UTRA Downlink,R1-050592", 《3GPP TSG RAN WG1 AD HOC ON LTE》 * |
| SHARP: "Monitoring of Paging Information for Evolved UTRA Scalable Bandwidth, R1-051340", 《3GPP TSG RAN WG1 #43》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2262333B1 (en) | Mobile station, base station, basic frequency block specifying method, and band control method | |
| CN103138907B (en) | The method and apparatus of multicast and unicast services is sent in OFDMA system | |
| US11457440B2 (en) | Physically separated channels for narrowband, low complexity receivers | |
| US8331307B2 (en) | Method of physical resource management in a wideband communication system | |
| CN106464474B (en) | Communication device, infrastructure equipment and method for LTE communication within unused GSM channels | |
| WO2008042575A2 (en) | Synchronization for a wireless communication device using multiple synchronization channels | |
| EP1977544B1 (en) | Method and system for supporting scalable bandwidth | |
| EP1695502B1 (en) | Method and apparatus in a cellular telecommunications system | |
| KR101918026B1 (en) | Method and apparatus for supporting multiple frequency assignment in wireless communication system | |
| KR101365561B1 (en) | Method For Effectively Transmitting Synchronization Channel And Method For Allocating Transmission Power For The Same | |
| KR102054804B1 (en) | Method for uplink communication in LTE cellular network | |
| CN101371476A (en) | Method and system for supporting scalable bandwidth | |
| KR20070092578A (en) | Multi-carrier transmission method to support differant bandwidth capability terminals | |
| US8520614B2 (en) | Communication method, base station apparatus, and terminal apparatus using the communication method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20090218 |