CN105578533B - A kind of method of adjustment and device of the carrier bandwidths of timesharing Long Term Evolution TD-LTE systems - Google Patents
A kind of method of adjustment and device of the carrier bandwidths of timesharing Long Term Evolution TD-LTE systems Download PDFInfo
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Abstract
The present invention provides a kind of method of adjustment and device of the carrier bandwidths of timesharing Long Term Evolution TD LTE systems, and the reserved bandwidth for solving adjacent carrier inside single operator is excessive so that the problem of spectrum efficiency of single carrier frequency is relatively low.The wherein described method of adjustment, in the single frequency band applied to continuous frequency spectrum resource, including：All reserved bandwidth of multiple carrier waves in single frequency band are obtained, wherein the carrier wave includes reserved bandwidth and transmitted bandwidth；The sum of all reserved bandwidth according to multiple carrier waves, adjust the transmitted bandwidth of at least one carrier wave in multiple carrier waves, wherein, transmitted bandwidth after carrier wave adjustment to be adjusted is more than the standard carrier bandwidth of the carrier wave before adjustment, and the sum of transmitted bandwidth after the multiple carrier wave adjustment is more than the sum of reserved bandwidth that the sum of the sum of transmitted bandwidth before adjustment, the reserved bandwidth after the multiple carrier wave adjustment is less than before adjustment.The transmitted bandwidth of bigger is so adjusted to, improves the spectrum efficiency of Continuous Band and system population size.
Description
Technical field
The present invention relates to wireless communication field, more particularly to a kind of carrier bandwidths of timesharing Long Term Evolution TD-LTE system
Method of adjustment and device.
Background technology
The availability of frequency spectrum refers to the transmission capacity under unit bandwidth, is the Important Problems that wireless communication technique needs are paid close attention to.
The availability of frequency spectrum can generally account in terms of following two：1, the transmission capacity of single carrier；2, it is single small under total frequency spectrum resource
The maximum number of carriers that area can configure.
For TD-LTE system, physical layer frequency resource can use RB (abbreviation of Resources block, resource again
Block) number weighs, and the various parameters such as the carrier bandwidths of communication system and single carrier transmission capacity can carry out the specification of standard
Or certain constraint, the index of correlation of TD-LTE system are provided in the 3 gpp standards.
6 kinds of channel widths (carrier bandwidths) are defined in the TD-LTE of 3GPP standards：20MHz、15MHz、10MHz、
5MHz, 3MHz, 1.4MHz, corresponding RB numbers are 100,75,50,25,15,6, are per the corresponding bandwidth of RB
180KHz, transmit the required transmitted bandwidths of these RB be respectively 18MHz, 13.5MHz, 9MHz, 4.5MHz, 2.7MHz,
1.08MHz can see by analyzing above, and carrier bandwidths as defined in TD-LTE standards are more than actual transmitted bandwidth, and not
With wireless channel conditions under, the modulation coding scheme of single RB selection also has corresponding parameter to provide, therefore list RB can be carried
Data capacity, the capacity of single carrier can also be calculated accordingly.The cardinal principle and precondition that carrier bandwidths are formulated are to ensure
Between different operators under not common station networking scene can adjacent frequency coexistence, there is certain reserved bandwidth between adjacent frequency as protection
Band, therefore its carrier bandwidths is more than RB occupied bandwidth summations.But for several adjacent carrier frequencies inside same operator, no
Cause the relevant issues that monkey chatter brings there are base station drift between different operators, therefore also there is no need to excessive reserved
Bandwidth can be adjusted suitably as protection band.Existing 6 kinds of carrier bandwidths, for the adjacent carrier frequency inside single operator
Speech, reserved bandwidth is excessive, reduces the spectrum efficiency of single carrier frequency, in a sense, waste frequency spectrum resource.
The content of the invention
It is an object of the invention to provide a kind of carrier bandwidths of timesharing Long Term Evolution TD-LTE system method of adjustment and
Device, the reserved bandwidth for solving adjacent carrier inside single operator are excessive so that the spectrum efficiency of single carrier frequency is relatively low to ask
Topic.
In order to solve the above-mentioned technical problem, the load of a kind of timesharing Long Term Evolution TD-LTE system provided in an embodiment of the present invention
The wide method of adjustment of wavestrip, in the single frequency band applied to continuous frequency spectrum resource, including：
All reserved bandwidth of multiple carrier waves in single frequency band are obtained, wherein the carrier wave includes reserved bandwidth and transmitting
Bandwidth；
The sum of all reserved bandwidth according to multiple carrier waves adjust the transmitted bandwidth of at least one carrier wave in multiple carrier waves,
Wherein, the transmitted bandwidth after carrier wave to be adjusted adjustment is more than the standard carrier bandwidth of the carrier wave before adjustment, and the multiple load
The sum of transmitted bandwidth after ripple adjustment is more than the sum of transmitted bandwidth before adjustment, the reserved bandwidth after the multiple carrier wave adjustment it
With less than the sum of reserved bandwidth before adjustment.
Further, according to the sum of all reserved bandwidth of multiple carrier waves, at least one carrier wave in multiple carrier waves is adjusted
The step of transmitted bandwidth, includes：
The sum of all reserved bandwidth according to multiple carrier waves, adjust the transmitting of a first object carrier wave in multiple carrier waves
Bandwidth, wherein the transmitted bandwidth after first object carrier wave adjustment is more than the standard carrier before first object carrier wave adjustment
Bandwidth, and the sum of transmitted bandwidth after the adjustment of the multiple carrier wave is more than the transmitted bandwidth before the adjustment of the multiple carrier wave；Or
The sum of all reserved bandwidth according to multiple carrier waves adjust the transmitted bandwidth of multiple carrier waves, wherein the multiple load
The sum of transmitted bandwidth after ripple adjustment is more than the transmitted bandwidth before the adjustment of the multiple carrier wave.
Further, according to the sum of all reserved bandwidth of multiple carrier waves, a first object in multiple carrier waves is adjusted
The step of transmitted bandwidth of carrier wave, includes：
The sum of all reserved bandwidth according to the multiple carrier wave adjust the first transmitted bandwidth of the first object carrier wave,
So that it is the first default transmitted bandwidth after the first transmitted bandwidth adjustment of the first object carrier wave, wherein the described first default hair
Penetrate band be wider than adjustment before the target carrier standard carrier bandwidth, and less than or equal to all reserved bandwidth it
With with first transmitted bandwidth and.
Further, according to the sum of all reserved bandwidth of multiple carrier waves, the step of adjusting the transmitted bandwidth of multiple carrier waves
Including：
Determine second target carrier in multiple carrier waves to be adjusted, and according to all reserved bandwidth of multiple carrier waves
The sum of adjustment second target carrier transmitted bandwidth；
Adjust the transmitted bandwidth of remaining carrier wave in multiple carrier waves to be adjusted in addition to second target carrier.
Further, the step of determining second target carrier in multiple carrier waves to be adjusted includes：It determines multiple
One carrier wave of carrier wave Plays bandwidth minimum is the second target carrier.
Further, the transmitted bandwidth of second target carrier is adjusted according to the sum of all reserved bandwidth of multiple carrier waves
The step of include：
The sum of all reserved bandwidth according to the multiple carrier wave adjust the second transmitting band of second target carrier
It is wide so as to be the second default transmitted bandwidth after the second transmitted bandwidth adjustment of second target carrier, wherein described second is pre-
If transmitted bandwidth is more than the standard carrier bandwidth of the target carrier before adjustment, and less than or equal to all reserved bands
It is the sum of wide with second transmitted bandwidth and.
Further, the step of transmitted bandwidth for adjusting remaining carrier wave in multiple carrier waves in addition to the second target carrier, wraps
It includes：
Obtain all reserved bandwidth of multiple carrier waves after the second transmitted bandwidth for adjusting second target carrier；
According to all reserved bandwidth of multiple carrier waves after the second transmitted bandwidth for adjusting second target carrier, adjustment
The transmitted bandwidth of remaining carrier wave in multiple carrier waves in addition to the second target carrier.
In the carrier wave method of adjustment of wherein described timesharing Long Term Evolution TD-LTE system, the transmitted bandwidth of target carrier is adjusted
The resource block number of transmitted bandwidth after whole is more than the resource block number before adjustment.
In order to solve the above-mentioned technical problem, the present invention also provides a kind of carrier bandwidths of timesharing Long Term Evolution TD-LTE system
Adjusting apparatus, in the single frequency band applied to continuous frequency spectrum resource, including：
Acquisition module, for obtaining all reserved bandwidth of multiple carrier waves in single frequency band, wherein the carrier wave includes
Reserved bandwidth and transmitted bandwidth；
Processing module for the sum of all reserved bandwidth according to multiple carrier waves, adjusts at least one load in multiple carrier waves
The transmitted bandwidth of ripple, wherein, the transmitted bandwidth after carrier wave to be adjusted adjustment is more than the standard carrier bandwidth of the carrier wave before adjustment,
And the sum of transmitted bandwidth after the multiple carrier wave adjustment is more than the sum of transmitted bandwidth before adjustment, after the multiple carrier wave adjustment
The sum of reserved bandwidth be less than the sum of reserved bandwidth before adjustment.
Further, the processing module includes：
First processing submodule, for the sum of all reserved bandwidth according to multiple carrier waves, adjusts one in multiple carrier waves
The transmitted bandwidth of a first object carrier wave, wherein the transmitted bandwidth after first object carrier wave adjustment is more than the first object
Standard carrier bandwidth before carrier wave adjustment, and the sum of transmitted bandwidth after the adjustment of the multiple carrier wave is more than the multiple carrier wave tune
Transmitted bandwidth before whole；With
Second processing submodule for the sum of all reserved bandwidth according to multiple carrier waves, adjusts the transmitting of multiple carrier waves
Bandwidth, wherein the sum of the transmitted bandwidth after the adjustment of the multiple carrier wave is more than the transmitted bandwidth before the adjustment of the multiple carrier wave.
Further, the first processing submodule includes：
First processing units adjust the first object for the sum of all reserved bandwidth according to the multiple carrier wave and carry
First transmitted bandwidth of ripple so that it is the first default transmitted bandwidth after the first transmitted bandwidth adjustment of the first object carrier wave,
Wherein described first default transmitted bandwidth is more than the standard carrier bandwidth of the target carrier before adjustment, and is less than or equal to
The sum of described all reserved bandwidth and first transmitted bandwidth and.
Further, the second processing submodule includes：
Second processing unit, for determining second target carrier in multiple carrier waves to be adjusted, and according to multiple
The sum of all reserved bandwidth of carrier wave adjust the transmitted bandwidth of second target carrier；
3rd processing unit, for adjusting remaining carrier wave in multiple carrier waves to be adjusted in addition to second target carrier
Transmitted bandwidth.
Further, the second processing unit includes：
First processing subelement, for determining that a carrier wave of multiple carrier wave Plays bandwidth minimums is the second target carrier.
Further, the second processing unit includes：
Second processing subelement for the sum of all reserved bandwidth according to the multiple carrier wave, adjusts second mesh
Mark the second transmitted bandwidth of carrier wave so that be the second default transmitting band after the second transmitted bandwidth adjustment of second target carrier
Width, wherein the described second default transmitted bandwidth is more than the standard carrier bandwidth of the target carrier before adjustment, and be less than or
Equal to the sum of described all reserved bandwidth and second transmitted bandwidth and.
Further, the 3rd processing unit includes：
3rd processing subelement, for obtaining multiple carrier waves after the second transmitted bandwidth for adjusting second target carrier
All reserved bandwidth；
Fourth process subelement, for according to multiple carrier waves after the second transmitted bandwidth for adjusting second target carrier
All reserved bandwidth, adjust the transmitted bandwidth of remaining carrier wave in multiple carrier waves in addition to the second target carrier.
In the adjusting apparatus of the carrier bandwidths of wherein described timesharing Long Term Evolution TD-LTE system, the transmitting band of target carrier
Width be adjusted after transmitted bandwidth resource block number be more than adjustment before resource block number.
The above-mentioned technical proposal of the present invention has the beneficial effect that：
In the solution of the present invention, original multiple carrier waves are adjusted by reserving the bandwidth value of bandwidth, by carrier wave to be replaced
Transmitting carrier wave be adjusted to bigger transmitted bandwidth carrier wave so that the reserved bandwidth of carrier wave becomes smaller, band is reserved after adjustment
The sum of width is less than the sum of reserved bandwidth before adjustment, and the transmitted bandwidth after adjustment is more than the transmitted bandwidth before adjustment, and is adjusting
Transmitted bandwidth afterwards, which is more than primary standard bandwidth, can cause the number of RB to increase, and so be adjusted to the transmitted bandwidth of bigger, with
The spectrum efficiency of Continuous Band is improved, so as to improve the population size of system, brings the economic interests of bigger.
Description of the drawings
Fig. 1 is the system bandwidth schematic diagram of the D frequency ranges of the prior art；
Fig. 2 is the schematic diagram of the system bandwidth of the E frequency ranges of the prior art；
Fig. 3 is the basic step flow chart of the method for adjustment of the embodiment of the present invention；
Fig. 4 is the specific implementation flow of the minimum carrier wave of adjustment of the embodiment of the present invention；
Fig. 5 is the schematic diagram of the system bandwidth of the E frequency ranges of the embodiment of the present invention；
Fig. 6 is the particular flow sheet of the frequency configuration of the embodiment of the present invention；
Fig. 7 is the basic block diagram of the adjusting apparatus of the embodiment of the present invention.
Specific embodiment
To make the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with attached drawing and tool
Body embodiment is described in detail.
In order to for easily reference is described in greater detail below, it is necessary to which explanation is to issue frequency resource, TD- according to Ministry of Industry and Information
Working frequency range workable for LTE system has F-band (1880-1900MHz), E frequency ranges (2320-2370MHz), D frequency ranges (2575-
2635MHz) and following more rich resource can obtain more continuous carriers.By taking D frequency ranges (common 60M bandwidth) as an example, at present
The carrier wave configuration mode of recommendation for 3 20M bandwidth (as shown in Figure 1) carrier wave, center frequency point is respectively 2585,2605,
2625MHz.At this point, the total RB numbers of D frequency ranges are 300RB, the power system capacity of D frequency ranges also mutually should be understood that with the availability of frequency spectrum.
The present invention is excessive for the reserved bandwidth of the adjacent carrier frequency in the single frequency spectrum of single operator in the prior art, from
And occupy too many bandwidth so that the transmitted bandwidth of the carrier wave in single frequency band becomes smaller, and reduces the spectrum efficiency of single carrier frequency, wave
The problem of having taken frequency spectrum resource a kind of method of adjustment and device of the carrier bandwidths of timesharing Long Term Evolution TD-LTE system are provided,
By the size of the bandwidth value of original reservation bandwidth, the bandwidth value of the carrier wave in original single frequency band is adjusted so that original is pre-
Bandwidth value is stayed to become smaller, carrier wave is adjusted to the carrier wave of the transmitted bandwidth of bigger, so as to improve the spectrum efficiency of Continuous Band and be
The population size of system will bring the economic interests of bigger.
As shown in Fig. 3 to Fig. 7, the adjustment side of the carrier bandwidths of the timesharing Long Term Evolution TD-LTE system of the embodiment of the present invention
Method, in the single frequency band applied to continuous frequency spectrum resource, wherein, including：
Step 31, all reserved bandwidth of multiple carrier waves in single frequency band are obtained, wherein the carrier wave includes reserved band
Wide and transmitted bandwidth；
Single frequency band shown in it can refer to each frequency range carrier wave of TD-LTE system, as D frequency ranges, E frequency ranges, F-band and
Future may distribute to each frequency range of TD-LTE, can be suitably used for frequency range of the present invention and all belong to the scope of protection of the present invention.
Step 32, according to the sum of all reserved bandwidth of multiple carrier waves, the hair of at least one carrier wave in multiple carrier waves is adjusted
Bandwidth is penetrated, wherein, the transmitted bandwidth after carrier wave to be adjusted adjustment is more than the standard carrier bandwidth of the carrier wave before adjustment, and described
The sum of transmitted bandwidth after multiple carrier wave adjustment is more than the sum of transmitted bandwidth before adjustment, reserved after the multiple carrier wave adjustment
The sum of bandwidth is less than the sum of reserved bandwidth before adjustment.
The bandwidth value of carrier wave that the bandwidth value of transmitted bandwidth after the adjustment of wherein the multiple carrier wave is more than before adjustment is
In order to obtain the standard carrier of transmitted bandwidth and the carrier wave being more than before adjustment than bigger before adjustment, so as in the increasing of transmitted bandwidth
So that RB numbers also increase, so as to improve overall system capacity after big.It is as shown in table 2 below, such as the carrier bandwidths of primary carrier
It is worth for 5MHZ, corresponding transmitted bandwidth is 4.5MHZ, and the transmitted bandwidth after adjustment is 9MHz, and carrier band width values at this time can be
Any bandwidth value of 9MHZ to 9.9MHZ, the bandwidth value of the carrier wave after adjusting at this time also greater than original 5MHZ and are not more than
Bandwidth value in the default table 1 of 10MHZ and table 2.It is merely illustrative above, if can be if, the transmitting after adjustment
Bandwidth can also be 13.5MHZ, and carrier band width values at this time can also be any bandwidth value of 13.5MHZ to 14.5MHZ, this
When adjustment after carrier wave bandwidth value also greater than original 5MHZ and no more than the bandwidth value in the default table 1 of 15MHZ and table 2.
It is any to increase transmitted bandwidth by adjusting reserved bandwidth, so that the increased number of modes of carrier wave RB, belong to the present invention
Protection domain, differ a citing herein.So it is to ensure after transmitted bandwidth is increased, carrier wave RB numbers also increase,
So as to improve overall system capacity, the availability of frequency spectrum is also improved.
Wherein adjusting the transmitted bandwidth of at least one carrier wave in multiple carrier waves includes the transmitted bandwidth of one carrier wave of adjustment,
Can be the transmitted bandwidth of multiple carrier bandwidths, if the transmitted bandwidth of a carrier wave can refer in minimum carrier wave, such as
Fruit is multiple carrier waves that multiple carrier waves can be relatively small transmitted bandwidth, specifically needs the carrier wave adjusted can be according to demand
Carry out sets itself.
According to all reserved bandwidth values that step 31 obtains, then step 32 is adjusted in multiple carrier waves one or more
The transmitted bandwidth of a carrier wave so that the transmitted bandwidth after the adjustment of multiple carrier waves becomes larger and the reserved band after the adjustment of multiple carrier waves
Width becomes smaller, while the transmitted bandwidth after adjustment is more than original transmitted bandwidth.So reduce reserved band by increasing transmitted bandwidth
It is wide so that the total RB numbers of system increase, and so as to improve overall system capacity, also improve the availability of frequency spectrum.
In order to improve the flexibility of method of adjustment, therefore the load of the timesharing Long Term Evolution TD-LTE system of the embodiment of the present invention
In the wide method of adjustment of wavestrip, step 32 includes：
Step 201, according to the sum of all reserved bandwidth of multiple carrier waves, the first object adjusted in multiple carrier waves carries
The transmitted bandwidth of ripple, wherein before the transmitted bandwidth after first object carrier wave adjustment is more than first object carrier wave adjustment
Standard carrier bandwidth, and the sum of transmitted bandwidth after the adjustment of the multiple carrier wave is more than the transmitting band before the adjustment of the multiple carrier wave
It is wide；Or
Step 211, according to the sum of all reserved bandwidth of multiple carrier waves, the transmitted bandwidth of multiple carrier waves, wherein institute are adjusted
It states the sum of transmitted bandwidth after multiple carrier wave adjustment and is more than the transmitted bandwidth before the adjustment of the multiple carrier wave.
Specifically, in the method for adjustment of the carrier bandwidths of the timesharing Long Term Evolution TD-LTE system of the embodiment of the present invention, step
Rapid 201 include：Step 20, the first of the first object carrier wave is adjusted according to the sum of all reserved bandwidth of the multiple carrier wave
Transmitted bandwidth so that be the first default transmitted bandwidth after the first transmitted bandwidth adjustment of the first object carrier wave, wherein described
First default transmitted bandwidth is more than the standard carrier bandwidth of the target carrier before adjustment, and all less than or equal to described
The sum of reserved bandwidth and first transmitted bandwidth and.
Wherein described first default transmitted bandwidth refers to by suitably adjusting reserved bandwidth, by the carrier bandwidths of single carrier wave
It reduces, so as to which the transmitted bandwidth of at least one carrier wave to be changed to the transmitted bandwidth of bigger (such as in D frequency ranges, E frequency ranges even
In the case of the total bandwidth of the frequency range of continuous frequency spectrum resource is constant).
After being adjusted to the first default transmitted bandwidth of bigger, the carrier bandwidths after the adjustment corresponded to also change, because
Carrier bandwidths after the adjustment reserve bandwidth after including transmitted bandwidth and adjustment after adjustment, come generally by carrier bandwidths
Description, the carrier bandwidths after the adjustment can be the whole of 15KHz when the bandwidth of ofdm system single sub-carrier is 15KHz
Multiple then may proceed to ensure the orthogonality of ofdm system, reduce interference level.
Carrier bandwidths after wherein described adjustment can also provide according to GPP standards, the frequency point scanning grid of TD-LTE terminals
Lattice are 100KHz, thus adjust after carrier bandwidths should be 100KHz integral multiple or set as desired according to
The multiple of 300KHz accounts for.
Specifically, 3GPP standards provide, the frequency point scanning grids of TD-LTE terminals is 100KHz, therefore the carrier wave after adjusting
Bandwidth should be the integral multiple of 100KHz, i.e. value between the center carrier frequence of two carrier bandwidths after adjustment, it is necessary to according to
The number that doubles of 100KHz accounts for, such as the following table 1.
| Standard carrier bandwidth (M) | Carrier bandwidths (M) after adjustment | Standard carrier RB numbers (a) |
| 20 | 18~19.9 | 100 |
| 15 | 13.5~14.9 | 75 |
| 10 | 9~9.9 | 50 |
| 5 | 4.5~4.9 | 25 |
| 3 | 2.7~2.9 | 15 |
| 1.4 | 1.1~1.3 | 6 |
Specifically, it is also contemplated that according to the step-length of terminal frequency sweep 100KHz requirement and meet under OFDM orthogonal requirements,
Interval needs to account for according to the multiple of 300KHz on the basis of actual occupied bandwidth (such as 100RB occupies 18MHz), that is, adjusts
Value between the center carrier frequence of two carrier bandwidths afterwards, it is necessary to be accounted for according to the number that doubles of 300KHz, such as the following table 2.
| Standard carrier bandwidth (M) | Carrier bandwidths (M) after adjustment | Standard carrier RB numbers (a) |
| 20 | 18/18.3/18.6 | 100 |
| 15 | 13.5/13.8/14.1 | 75 |
| 10 | 9/9.3 | 50 |
| 5 | 4.5/4.8 | 25 |
| 3 | 2.7 | 15 |
| 1.4 | 1.1 | 6 |
Carrier wave after adjustment can be independent carrier wave and individually configure, and can also be used as the member carrier of carrier aggregation
It uses.
Specifically, in the method for adjustment of the carrier bandwidths of the timesharing Long Term Evolution TD-LTE system of the embodiment of the present invention, step
Rapid 211 include：Step 21, second target carrier in multiple carrier waves to be adjusted is determined, and according to the institute of multiple carrier waves
There is the transmitted bandwidth that the sum of reserved bandwidth adjusts second target carrier；
Step 22, the transmitted bandwidth of remaining carrier wave in multiple carrier waves to be adjusted in addition to second target carrier is adjusted.
The principle of reduction that can be appropriate according to adjacent frequency interference index in the case of single operator's networking, in RB numbers and
In the case that transmitted bandwidth etc. is constant, appropriate adjustment reduces reserved bandwidth, can reduce carrier bandwidths.
Specifically, in the method for adjustment of the carrier bandwidths of the timesharing Long Term Evolution TD-LTE system of the embodiment of the present invention, step
Rapid 21 include：The carrier wave for determining multiple carrier wave Plays bandwidth minimums is the second target carrier.
As shown in figure 4, when target carrier is the minimum carrier wave in multiple carrier waves, the present invention specifically adjusts minimum carrier wave
Realize that flow is exemplified below.
Step 41, all reserved bandwidth values are obtained, the cumulative bandwidth value that obtains is N；
Step 42, the minimum carrier wave that the transmitted bandwidth in multiple carrier waves is A is obtained；
Step 43, according to bandwidth value and transmitted bandwidth, the transmitted bandwidth for adjusting all reserved bandwidth and minimum carrier wave cannot
More than A+N, it is assumed that the carrier wave of the transmitted bandwidth of the minimum carrier wave after adjustment is B；
Step 44 so that the aggregate reservation bandwidth that system newly configures is A+N-B, is A+N-B mean allocations by aggregate reservation bandwidth
To at the starting frequency point of two carrier waves and end frequency point of the band edge (result after dividing exactly if not 100k multiple,
The then reduction 50k, the increase 50k on the right on the left side), as the reserved bandwidth of edge carrier, increase between other successive bands
Every.
Step 45, the minimum carrier wave that transmitted bandwidth is A is adjusted to the carrier wave that transmitted bandwidth is B.
In order to which the reserved bandwidth of script is reduced, increase the transmitted bandwidth of carrier wave, to increase RB numbers and improve frequency spectrum
Utilization rate, will not be to network performance and capacity although the neighboring trace index reduced inside the carrier wave after respective bandwidth can decline
It impacts, it is pre- first in the method for adjustment of the carrier bandwidths of the timesharing Long Term Evolution TD-LTE system of the embodiment of the present invention
If transmitted bandwidth is equal to the sum of the sum of all reserved bandwidth and described first transmitted bandwidth, reduce multiple loads in single frequency band
All preset bandwidth values between ripple are zero.
It is zero that all preset bandwidth values, which will be reduced, then target carrier is adjusted to the carrier wave of bigger transmitted bandwidth so that
All pre-set bandwidths in single frequency band are rationally utilized, and more RB numbers can be so planned in finite bandwidth, are increased
Add overall system capacity, improved the availability of frequency spectrum of TD-LTE system, bring larger economic benefit.
Specifically, in the method for adjustment of the carrier bandwidths of the timesharing Long Term Evolution TD-LTE system of the embodiment of the present invention, step
Rapid 21 include：The sum of all reserved bandwidth according to the multiple carrier wave adjust the second transmitting band of second target carrier
It is wide so as to be the second default transmitted bandwidth after the second transmitted bandwidth adjustment of second target carrier, wherein described second is pre-
If transmitted bandwidth is more than the standard carrier bandwidth of the target carrier before adjustment, and less than or equal to all reserved bands
It is the sum of wide with second transmitted bandwidth and.
Wherein described second default transmitted bandwidth is also referred to by suitably adjusting reserved bandwidth, by the carrier band of single carrier wave
Width reduces, so as to which the transmitted bandwidth of at least one carrier wave to be changed to the transmitted bandwidth of bigger (such as in D frequency ranges, E frequency ranges
In the case of continuously the total bandwidth of the frequency range of frequency spectrum resource is constant).
After being adjusted to the second default transmitted bandwidth of bigger, the carrier bandwidths after the adjustment corresponded to also change, because
Carrier bandwidths after the adjustment reserve bandwidth after including transmitted bandwidth and adjustment after adjustment, come generally by carrier bandwidths
Description, the carrier bandwidths after the adjustment can be the whole of 15KHz when the bandwidth of ofdm system single sub-carrier is 15KHz
Multiple then may proceed to ensure the orthogonality of ofdm system, reduce interference level.
Carrier bandwidths after wherein described adjustment can also provide according to GPP standards, the frequency point scanning grid of TD-LTE terminals
Lattice are 100KHz, thus adjust after carrier bandwidths should be 100KHz integral multiple or set as desired according to
The multiple of 300KHz accounts for.
Specifically, in the method for adjustment of the carrier bandwidths of the timesharing Long Term Evolution TD-LTE system of the embodiment of the present invention, step
Rapid 22 include：Obtain all reserved bandwidth of multiple carrier waves after the second transmitted bandwidth for adjusting second target carrier；
According to all reserved bandwidth of multiple carrier waves after the second transmitted bandwidth for adjusting second target carrier, adjustment
The transmitted bandwidth of remaining carrier wave in multiple carrier waves in addition to the second target carrier.
Specifically, in the method for adjustment of the carrier bandwidths of the timesharing Long Term Evolution TD-LTE system of the embodiment of the present invention, mesh
Mark carrier wave transmitted bandwidth be adjusted after transmitted bandwidth resource block number be more than adjustment before resource block number.
It is traditional as shown in Fig. 2, in the case of E frequency ranges (2320-2370MHz) total bandwidth 50MHZ, traditional scheme according to
3GPP standards, can only configure 2 20MHZ carrier waves and 1 10MHZ carrier wave, center frequency point be respectively 2330MHz, 2350MHz,
2365MHz, the RB numbers of system configuration are 250.
And the present invention can configure 2 transmitted bandwidths as 18MHZ as shown in figure 5, in the case of E frequency range total bandwidths 50MHZ
Carrier wave and carrier wave that transmitted bandwidth is 13.5MHZ, wherein as shown in fig. 6, being known as first carrier from left to right, second carrying
Involve the 3rd carrier wave to illustrate：The bandwidth value of first carrier wave is 18.2MHZ, transmitted bandwidth 18MHZ, then the first carrier
Reserved bandwidth with common 0.2MHZ, and the reserved bandwidth is evenly distributed on first carrier wave both sides as 0.1MHZ, second
The bandwidth value of carrier wave is 18MHZ, transmitted bandwidth 18MHZ, then the reserved bandwidth of second carrier wave is zero, the band of the 3rd carrier wave
Width values are 13.5MHZ, transmitted bandwidth 13.8MHZ, then the reserved bandwidth of second carrier wave is 0.3MHZ, and the reserved bandwidth is equal
0.15MHZ is in the even first carrier wave both sides that are distributed in.The center carrier frequence of three carrier waves successively is respectively：2329.1MHz、
2347.2MHz, 2363.1MHz, the total RB numbers of system are 275.After scheme proposed by the present invention, 50MHZ bandwidth can be held
The RB numbers of load are promoted by 250 to 275, and power system capacity improves 10%.
The specifically realization flow in the case of E frequency range total bandwidths 50M of the invention.
By taking E frequency ranges as an example, the carrier wave and the carrier wave of 20MHZ and the load of 10MHZ of total bandwidth 50MHZ, existing configuration 20MHZ
Ripple, and existing reserved bandwidth is shared as 5MHZ；
As shown in figure 5, choosing the 3rd minimum carrier wave, it is B=13.5MHZ's to be adjusted into a transmitted bandwidth
Carrier wave；
The aggregate reservation bandwidth newly configured is 0.5MHZ, distributes to two carrier waves at edge, and an edge distributes 0.2MHZ, separately
One edge distributes 0.3MHZ, then three carrier bandwidths determine, is respectively：18.2MHZ, 18MHZ and 13.8MHZ.Centered carrier
It is identified as 2320+18.2/2=2329.1,2320+18.2+18/2=2347.2,2320+18.2+18+13.8/2=
2363.1。
In the case of E frequency range total bandwidths 50MHZ, carrier wave and a hair that 2 transmitted bandwidths are 18MHZ can also be configured
The carrier wave that bandwidth is 13.8MHZ is penetrated, the total RB numbers of system are 275.After scheme proposed by the present invention, 50MHZ bandwidth can
The RB numbers of carrying are promoted by 250 to 275, and power system capacity improves 10%.
Single operator is fully demonstrated by the various aspects such as theory analysis and system emulation and actual field testing
In the case of TD-LTE carrier bandwidths adjust feasibility.Therefore, under the conditions of identical frequency spectrum resource, by adjusting reserved bandwidth
And transmitted bandwidth, replacement are adjusted to bigger carrier wave, can improve the availability of frequency spectrum.
As shown in fig. 6, using the system of this frequency configuration scheme, allocation plan is introduced into system by following steps：
Step 61, network planning tool can be every according to the new frequency point splitting scheme determined according to new carrier wave interval
A rational frequency point of base station planning；
Step 62, new frequency planning scheme passes through the OMC (letters of Operation and Maintenance Center
Claim, operation maintenance center) man-machine interface be input in the configuration database of OMC；
Step 63, OMC is downloaded new configuration data by the OM channel with eNodeB (evolved Node B)
Into the cell of each base station；
Step 64, cellular cell is carried out wirelessly by reactivating process according to new frequency point configuration on corresponding frequency point
Signal sends and receives.
Terminal is scanned for according to the signal frequency that the grid of 100KHz is sent for base station.When using new frequency configuration
After scheme, each working frequency points still maintain the integral multiple of 100kHz, so terminal can search the frequency point newly configured automatically,
And enter normal operating conditions.
The each base station of this programme can configure to configure more RB by improving the RB of original several carrier waves；TD-LTE nets
Network equipment, terminal, Planning Tool support are configured according to flexible frequency interval, planned and business procedure；Support new frequency
The TD-LTE system of rate allocation plan can be updated new frequency configuration to every by the configuration management system of OMC, eNodeB
A cellular cell, cellular cell can configure transmitting/receiving wireless signal according to new frequency point.Existing terminal can be in original work
New frequency point configuration is adapted under pattern normally to be worked.
This programme is applicable not only to TD-LTE system, is also applied for LTE FDD (Long Term Evolution Time
The abbreviation of Division Duplexing, time division duplex Long Term Evolution) system, for a certain operator of LTE FDD continuous frequency spectrums
Inside equally may be employed this motion and be adjusted, and improve the availability of frequency spectrum, while it is based on OFDM to be also applied for physical layer
The wireless communication of (abbreviation of Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing) technology
System is adjusted for this motion equally may be employed inside a certain operator of continuous frequency spectrum, improves the availability of frequency spectrum.
As shown in fig. 7, in order to solve the above-mentioned technical problem, the timesharing Long Term Evolution TD-LTE of another embodiment of the present invention
The adjusting apparatus of the carrier bandwidths of system, in the single frequency band applied to continuous frequency spectrum resource, wherein, including：
Acquisition module 71, for obtaining all reserved bandwidth of multiple carrier waves in single frequency band, wherein the carrier wave bag
Include reserved bandwidth and transmitted bandwidth；
Processing module 72 for the sum of all reserved bandwidth according to multiple carrier waves, adjusts at least one in multiple carrier waves
The transmitted bandwidth of carrier wave, wherein, the transmitted bandwidth after carrier wave to be adjusted adjustment is more than the standard carrier band of the carrier wave before adjustment
Width, and the sum of transmitted bandwidth after the adjustment of the multiple carrier wave is more than the sum of transmitted bandwidth before adjustment, the multiple carrier wave tune
The sum of reserved bandwidth after whole is less than the sum of reserved bandwidth before adjustment.
According to acquisition module 71 obtain all reserved bandwidth values, then processing module 72 be adjusted in multiple carrier waves extremely
The transmitted bandwidth of a few carrier wave so that the transmitted bandwidth after the adjustment of multiple carrier waves becomes larger and pre- after the adjustment of multiple carrier waves
Bandwidth is stayed to become smaller, while the transmitted bandwidth after adjustment is more than original transmitted bandwidth.So reduced in advance by increasing transmitted bandwidth
Stay bandwidth so that the total RB numbers of system increase, and so as to improve overall system capacity, also improve the availability of frequency spectrum.
In the adjusting apparatus of the carrier bandwidths of the timesharing Long Term Evolution TD-LTE system of further embodiment of this invention, the place
Reason module 72 includes：
First processing submodule, for the sum of all reserved bandwidth according to multiple carrier waves, adjusts one in multiple carrier waves
The transmitted bandwidth of a first object carrier wave, wherein the transmitted bandwidth after first object carrier wave adjustment is more than the first object
Standard carrier bandwidth before carrier wave adjustment, and the sum of transmitted bandwidth after the adjustment of the multiple carrier wave is more than the multiple carrier wave tune
Transmitted bandwidth before whole；With
Second processing submodule for the sum of all reserved bandwidth according to multiple carrier waves, adjusts the transmitting of multiple carrier waves
Bandwidth, wherein the sum of the transmitted bandwidth after the adjustment of the multiple carrier wave is more than the transmitted bandwidth before the adjustment of the multiple carrier wave.
In the adjusting apparatus of the carrier bandwidths of the timesharing Long Term Evolution TD-LTE system of further embodiment of this invention, described
One processing submodule includes：
First processing units adjust the first object for the sum of all reserved bandwidth according to the multiple carrier wave and carry
First transmitted bandwidth of ripple so that it is the first default transmitted bandwidth after the first transmitted bandwidth adjustment of the first object carrier wave,
Wherein described first default transmitted bandwidth is more than the standard carrier bandwidth of the target carrier before adjustment, and is less than or equal to
The sum of described all reserved bandwidth and first transmitted bandwidth and.
In the adjusting apparatus of the carrier bandwidths of the timesharing Long Term Evolution TD-LTE system of further embodiment of this invention, described
Two processing submodules include：
Second processing unit, for determining second target carrier in multiple carrier waves to be adjusted, and according to multiple
The sum of all reserved bandwidth of carrier wave adjust the transmitted bandwidth of second target carrier；
3rd processing unit, for adjusting remaining carrier wave in multiple carrier waves to be adjusted in addition to second target carrier
Transmitted bandwidth.
In the adjusting apparatus of the carrier bandwidths of the timesharing Long Term Evolution TD-LTE system of further embodiment of this invention, described
Two processing units include：
First processing subelement, for determining that a carrier wave of multiple carrier wave Plays bandwidth minimums is the second target carrier.
In the adjusting apparatus of the carrier bandwidths of the timesharing Long Term Evolution TD-LTE system of further embodiment of this invention, described
Two processing units include：
Second processing subelement for the sum of all reserved bandwidth according to the multiple carrier wave, adjusts second mesh
Mark the second transmitted bandwidth of carrier wave so that be the second default transmitting band after the second transmitted bandwidth adjustment of second target carrier
Width, wherein the described second default transmitted bandwidth is more than the standard carrier bandwidth of the target carrier before adjustment, and be less than or
Equal to the sum of described all reserved bandwidth and second transmitted bandwidth and.
In the adjusting apparatus of the carrier bandwidths of the timesharing Long Term Evolution TD-LTE system of further embodiment of this invention, described
Three processing units include：
3rd processing subelement, for obtaining multiple carrier waves after the second transmitted bandwidth for adjusting second target carrier
All reserved bandwidth；
Fourth process subelement, for according to multiple carrier waves after the second transmitted bandwidth for adjusting second target carrier
All reserved bandwidth, adjust the transmitted bandwidth of remaining carrier wave in multiple carrier waves in addition to the second target carrier.
In the adjusting apparatus of the carrier bandwidths of the timesharing Long Term Evolution TD-LTE system of further embodiment of this invention, target carries
The transmitted bandwidth of ripple be adjusted after transmitted bandwidth resource block number be more than adjustment before resource block number.
It should be noted that device provided by the invention is the carrier band using above-mentioned timesharing Long Term Evolution TD-LTE system
The device of wide method of adjustment, then above-mentioned host computer system is to the method for adjustment of the carrier bandwidths of timesharing Long Term Evolution TD-LTE system
All embodiments be suitable for the device, and can reach the same or similar advantageous effect.
The above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, several improvements and modifications can also be made, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (14)
1. a kind of method of adjustment of the carrier bandwidths of timesharing Long Term Evolution TD-LTE system, applied to the single of continuous frequency spectrum resource
In frequency range, which is characterized in that including：
All reserved bandwidth of multiple carrier waves in single frequency band are obtained, wherein the carrier wave includes reserved bandwidth and transmitting band
It is wide；
The sum of all reserved bandwidth according to multiple carrier waves adjust the transmitted bandwidth of at least one carrier wave in multiple carrier waves, wherein,
Transmitted bandwidth after carrier wave adjustment to be adjusted is more than the standard carrier bandwidth of the carrier wave before adjustment, and the multiple carrier wave adjusts
The sum of transmitted bandwidth afterwards is more than the sum of the sum of transmitted bandwidth before adjustment, the reserved bandwidth after the multiple carrier wave adjustment and is less than
The sum of reserved bandwidth before adjustment；
The sum of all reserved bandwidth according to multiple carrier waves, the step of adjusting the transmitted bandwidth of at least one carrier wave in multiple carrier waves
Including：
The sum of all reserved bandwidth according to multiple carrier waves adjust the transmitting band of a first object carrier wave in multiple carrier waves
Width, wherein the transmitted bandwidth after first object carrier wave adjustment is more than the standard carrier band before first object carrier wave adjustment
Width, and the sum of transmitted bandwidth after the adjustment of the multiple carrier wave is more than the transmitted bandwidth before the adjustment of the multiple carrier wave；Or
The sum of all reserved bandwidth according to multiple carrier waves adjust the transmitted bandwidth of multiple carrier waves, wherein the multiple carrier wave tune
The sum of transmitted bandwidth after whole is more than the transmitted bandwidth before the adjustment of the multiple carrier wave.
2. method of adjustment according to claim 1, which is characterized in that according to the sum of all reserved bandwidth of multiple carrier waves,
The step of transmitted bandwidth for adjusting in multiple carrier waves first object carrier wave, includes：
The sum of all reserved bandwidth according to the multiple carrier wave adjust the first transmitted bandwidth of the first object carrier wave so that
It is the first default transmitted bandwidth after the first transmitted bandwidth adjustment of the first object carrier wave, wherein the described first default transmitting band
Be wider than the standard carrier bandwidth of the target carrier before adjustment, and less than or equal to the sum of described all reserved bandwidth with
The sum of first transmitted bandwidth.
3. method of adjustment according to claim 1, which is characterized in that according to the sum of all reserved bandwidth of multiple carrier waves,
The step of transmitted bandwidth for adjusting multiple carrier waves, includes：
Determine second target carrier in multiple carrier waves to be adjusted, and the sum of all reserved bandwidth according to multiple carrier waves
Adjust the transmitted bandwidth of second target carrier；
Adjust the transmitted bandwidth of remaining carrier wave in multiple carrier waves to be adjusted in addition to second target carrier.
4. method of adjustment according to claim 3, which is characterized in that determine one second in multiple carrier waves to be adjusted
The step of target carrier, includes：The carrier wave for determining multiple carrier wave Plays bandwidth minimums is the second target carrier.
5. method of adjustment according to claim 3, which is characterized in that according to the sum of all reserved bandwidth of multiple carrier waves tune
The step of transmitted bandwidth of whole second target carrier, includes：
The sum of all reserved bandwidth according to the multiple carrier wave adjust the second transmitted bandwidth of second target carrier, make
Be the second default transmitted bandwidth after the second transmitted bandwidth adjustment of second target carrier, wherein the described second default transmitting
Band is wider than the standard carrier bandwidth of the target carrier before adjustment, and less than or equal to the sum of described all reserved bandwidth
With second transmitted bandwidth and.
6. method of adjustment according to claim 5, which is characterized in that adjust in multiple carrier waves in addition to the second target carrier
The step of transmitted bandwidth of remaining carrier wave, includes：
Obtain all reserved bandwidth of multiple carrier waves after the second transmitted bandwidth for adjusting second target carrier；
According to all reserved bandwidth of multiple carrier waves after the second transmitted bandwidth for adjusting second target carrier, adjustment is multiple
The transmitted bandwidth of remaining carrier wave in carrier wave in addition to the second target carrier.
7. the method for adjustment according to claim 2 or 5, which is characterized in that after the transmitted bandwidth of target carrier is adjusted
The resource block number of transmitted bandwidth is more than the resource block number before adjustment.
8. a kind of adjusting apparatus of the carrier bandwidths of timesharing Long Term Evolution TD-LTE system, applied to the single of continuous frequency spectrum resource
In frequency range, which is characterized in that including：
Acquisition module, for obtaining all reserved bandwidth of multiple carrier waves in single frequency band, wherein the carrier wave includes reserving
Bandwidth and transmitted bandwidth；
Processing module for the sum of all reserved bandwidth according to multiple carrier waves, adjusts at least one carrier wave in multiple carrier waves
Transmitted bandwidth, wherein, the transmitted bandwidth after carrier wave to be adjusted adjustment is more than the standard carrier bandwidth of the carrier wave before adjustment, and institute
The sum of transmitted bandwidth that the sum of transmitted bandwidth after multiple carrier wave adjustment is more than before adjustment is stated, it is pre- after the multiple carrier wave adjustment
The sum of bandwidth is stayed less than the sum of reserved bandwidth before adjustment；
The processing module includes：
First processing submodule for the sum of all reserved bandwidth according to multiple carrier waves, adjusts one in multiple carrier waves the
The transmitted bandwidth of one target carrier, wherein the transmitted bandwidth after first object carrier wave adjustment is more than the first object carrier wave
Standard carrier bandwidth before adjustment, and before the sum of transmitted bandwidth after the adjustment of the multiple carrier wave is more than the adjustment of the multiple carrier wave
Transmitted bandwidth；With
Second processing submodule for the sum of all reserved bandwidth according to multiple carrier waves, adjusts the transmitted bandwidth of multiple carrier waves,
The sum of transmitted bandwidth after wherein the multiple carrier wave adjustment is more than the transmitted bandwidth before the adjustment of the multiple carrier wave.
9. adjusting apparatus according to claim 8, which is characterized in that the first processing submodule includes：
First processing units adjust the first object carrier wave for the sum of all reserved bandwidth according to the multiple carrier wave
First transmitted bandwidth so that it is the first default transmitted bandwidth after the first transmitted bandwidth adjustment of the first object carrier wave, wherein
Described first default transmitted bandwidth is more than the standard carrier bandwidth of the target carrier before adjustment, and less than or equal to described
The sum of all reserved bandwidth and first transmitted bandwidth and.
10. adjusting apparatus according to claim 8, which is characterized in that the second processing submodule includes：
Second processing unit, for determining second target carrier in multiple carrier waves to be adjusted, and according to multiple carrier waves
The sum of all reserved bandwidth adjustment second target carrier transmitted bandwidth；
3rd processing unit, for adjusting the transmitting of remaining carrier wave in multiple carrier waves to be adjusted in addition to second target carrier
Bandwidth.
11. adjusting apparatus according to claim 10, which is characterized in that the second processing unit includes：
First processing subelement, for determining that a carrier wave of multiple carrier wave Plays bandwidth minimums is the second target carrier.
12. adjusting apparatus according to claim 10, which is characterized in that the second processing unit includes：
Second processing subelement for the sum of all reserved bandwidth according to the multiple carrier wave, adjusts second target and carries
Second transmitted bandwidth of ripple so that it is the second default transmitted bandwidth after the second transmitted bandwidth adjustment of second target carrier,
Wherein described second default transmitted bandwidth is more than the standard carrier bandwidth of the target carrier before adjustment, and is less than or equal to
The sum of described all reserved bandwidth and second transmitted bandwidth and.
13. adjusting apparatus according to claim 12, which is characterized in that the 3rd processing unit includes：
3rd processing subelement, for obtaining the institute of multiple carrier waves after the second transmitted bandwidth for adjusting second target carrier
There is reserved bandwidth；
Fourth process subelement, for the institute according to multiple carrier waves after the second transmitted bandwidth for adjusting second target carrier
There is reserved bandwidth, adjust the transmitted bandwidth of remaining carrier wave in multiple carrier waves in addition to the second target carrier.
14. the adjusting apparatus according to claim 9 or 12, which is characterized in that after the transmitted bandwidth of target carrier is adjusted
Transmitted bandwidth resource block number be more than adjustment before resource block number.
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| CN101772037A (en) * | 2008-12-26 | 2010-07-07 | 大唐移动通信设备有限公司 | Method and device for providing large transmission bandwidth for long-term evolution multi-carrier system |
| CN102104877A (en) * | 2009-12-17 | 2011-06-22 | 中国移动通信集团设计院有限公司 | Carrier allocating method and system in TD-SCDMA (time division-synchronous code division multiple access) system |
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| US7949343B2 (en) * | 2006-09-18 | 2011-05-24 | Nokia Corporation | Method and apparatus for adjusting guard band size between two carriers by quality of service data positioning in the spectrum band |
| US8315241B2 (en) * | 2008-03-31 | 2012-11-20 | Lockheed Martin Corporation | Method and apparatus for providing quality of service in wireless networks and sensor networks |
| US8395985B2 (en) * | 2011-07-25 | 2013-03-12 | Ofinno Technologies, Llc | Time alignment in multicarrier OFDM network |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101772037A (en) * | 2008-12-26 | 2010-07-07 | 大唐移动通信设备有限公司 | Method and device for providing large transmission bandwidth for long-term evolution multi-carrier system |
| CN102104877A (en) * | 2009-12-17 | 2011-06-22 | 中国移动通信集团设计院有限公司 | Carrier allocating method and system in TD-SCDMA (time division-synchronous code division multiple access) system |
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