CN101990775B - Method for adjusting carrier frequency of home base station and the device thereof - Google Patents
Method for adjusting carrier frequency of home base station and the device thereof Download PDFInfo
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- CN101990775B CN101990775B CN200880128573.5A CN200880128573A CN101990775B CN 101990775 B CN101990775 B CN 101990775B CN 200880128573 A CN200880128573 A CN 200880128573A CN 101990775 B CN101990775 B CN 101990775B
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/14—Spectrum sharing arrangements between different networks
- H04W16/16—Spectrum sharing arrangements between different networks for PBS [Private Base Station] arrangements
Abstract
A method for adjusting carrier frequency of a home base station is disclosed in the present invention, which includes the following steps: dividing frequency resource of the home base station into multiple bands, wherein the size of each band is the greatest common divisor of the channel bandwidths of all types of user terminals that supportable by the radio access technology utilized by the home base station; measuring received signal strength indicator of each band in the multiple bands; and according to the result of measurement, selecting partial bands of the bands whose received signal strength indicator is lower than the preset threshold from multiple bands, and forming uplink/downlink channel of the home base station, and correspondingly adjusting the uplink/downlink carrier frequency of the home base station. A home base station is also disclosed in the present invention. The present invention can effectively suppress the interference of inter-cells/inter-base stations during home base station deployment, and realize the optimal frequency resource utilization ratio.
Description
Technical field
The present invention relates to the Anti-Jamming Technique in the mobile communication, particularly, relate to a kind of carrier frequency regulation method and device thereof of Home eNodeB.
Background technology
In the WRC2007 conference, ITU plans that to the frequency resource of IMT-2000 and IMT-Advanced use wherein, the frequency resource of distributing for IMT mainly is distributed in more than the 2GHz.Although also have 440-450MHz and two frequency ranges of 698-862MHz, because its resource of frequency range that provides is less, the enforcement of the cleaning work of relevant frequency range is difficulty comparatively.Therefore, the employed resource of frequency range of next generation mobile communication system will shift to high band inevitably.
Although the above high band of 2GHz can provide abundant band resource, for operator, the covering of implementing broadband wireless access at high band may face many difficulties.With implement the network planning in low-frequency range and compare, provide the needed base station number of seamless coverage larger at high band, base station selection can be very difficult.In addition, consider the demand of broadband wireless access mainly from the indoor application scene, thereby also increased the difficulty of the network coverage.
Home eNodeB is being played the part of more and more important effect in following BWA, for equipment vendors and operator, the product of Home eNodeB will become an important source of profit.
Disposing Home eNodeB will be an important solutions that solves indoor covering problem.In this application, term " Home eNodeB " refers to the base station in indoor deployment, and it includes but not limited to Home eNodeB (Home Base Station, H-BS).
The problem that exists in the deployment of Home eNodeB is: because the uncertainty of user behavior, when unpredictable user can open or close Home eNodeB and where Home eNodeB is arranged at, and therefore can't plan the deployment of Home eNodeB in advance.This has also caused understanding owing to mis-arrange produces comparatively serious presence of intercell interference (inter-cell interference, ICI) in the deployment of Home eNodeB, and this can affect user's Quality of experience to a great extent.Especially in the larger area of population residential density, the density that Home eNodeB is disposed can be larger, so this problem is particularly remarkable.
In traditional cellular system, for above-mentioned ICI problem a lot of solutions has been proposed.Wherein a solution is to adopt disturbance coordination method.By interference coordination, adjacent base station can pass through the use of the mode plan frequency resource of " negotiation ", such as the mode of soft-frequency reuse.In addition, another kind of solution be the base station by the mode of frequency scheduling, different with decline according to the interference of different user terminal (User Terminals, user terminal) experience, be that it distributes suitable Radio Resource.
But for Home eNodeB, above-mentioned existing method can not reach preferably effect.
Particularly, if the employing disturbance coordination method, although larger owing to cell coverage area in macrocell, therefore can effectively distinguish center and edge customer, according to the arrangement in the network planning process, adopt the multiplexing factor of different frequency for different user terminals.But, for Home eNodeB, because its coverage is less, therefore can't distinguish the user.Can't the application of interference coordination approach owing to can't carry out the prior network planning.
And if the proportion dispatching method, when the family base station detects when disturbing, it can come to disturb less Radio Resource as user terminal distributes in the mode of scheduling.To such an extent as to but when disturbing serious can't the processing by scheduling, user terminal can only be switched in the less residential quarter of interference.Yet, namely allow to find the Target cell of switching, still can produce extra overhead between the Home eNodeB or between Home eNodeB and core net, and the continuity of user terminal communication can be interfered also.
In addition, the disturbance restraining method of existing Home eNodeB mainly is based on power control, this scheme has been proved to be the interference problem that can't solve based on the wireless communication system of OFDM technology in macrocellular is coordinated, and the air interface technologies that just is based on OFDM that next generation mobile communication system mainly adopts.
Therefore, there is demand to the carrier frequency adjusting device that a kind of method that can effectively suppress the minizone/inter base station interference of Home eNodeB in disposing and corresponding Home eNodeB are provided.
Summary of the invention
In view of the above problems, finished the present invention.The carrier frequency regulation method and the device thereof that the purpose of this invention is to provide a kind of Home eNodeB, minizone/inter base station interference that it can suppress in the Home eNodeB deployment effectively realizes the optimization to the frequency resource utilance simultaneously.
According to an aspect of the present invention, a kind of carrier frequency regulation method of Home eNodeB has been proposed, may further comprise the steps: the Uplink/Downlink available frequency resources of Home eNodeB is divided into a plurality of frequency ranges, and wherein the size of each frequency range is the greatest common divisor of the supported all types of user terminal channel widths of the employed wireless access technology of Home eNodeB; Received signal strength index to each frequency range in described a plurality of frequency ranges is measured; And according to the result of described measurement, the selective reception signal strength indicator is lower than the band segment in the frequency range of predetermined threshold value from described a plurality of frequency ranges, consist of the Uplink/Downlink channel of described Home eNodeB, and correspondingly adjust the Uplink/Downlink carrier frequency of described Home eNodeB.
Preferably, in the technique scheme, described measuring process can comprise for the received signal strength index of each frequency range in the described a plurality of frequency ranges of uplink measurement and for the received signal strength index of each frequency range in the described a plurality of frequency ranges of downlink measurement to be measured.
Preferably, in the technique scheme, described measuring process can comprise: start described user terminal to assist to finish for the described measurement of down link or by described Home eNodeB and finish voluntarily described measurement for down link, and finish voluntarily described measurement for up link by described Home eNodeB.
Preferably, in the technique scheme, described measuring process can comprise: the received signal strength index to each frequency range in described a plurality of frequency ranges takes multiple measurements, and the described value of repeatedly measuring is averaged, to obtain final measurement result.
Preferably, in the technique scheme, described measuring process can be carried out the automatic adjusting stage of carrier frequency when described Home eNodeB is installed for the first time or restarted.Described selection step can comprise: according to the channel width of described Home eNodeB, based on described a plurality of frequency ranges, form a plurality of frequency range set, each frequency range set can consist of the Uplink/Downlink channel of described Home eNodeB, calculate respectively the summation of the received signal strength index of each frequency range in each frequency range set, and from described a plurality of frequency range set, the summation of selective reception signal strength indicator is lower than the frequency range set of predetermined initial start threshold value, is used for consisting of the Uplink/Downlink channel of described Home eNodeB.When a plurality of frequency ranges set that existence satisfies condition, one of the summation minimum of selective reception signal strength indicator consists of required Uplink/Downlink channel.
Preferably, in the technique scheme, described selection step also can comprise: if there is no the summation of received signal strength index is lower than the frequency range set of predetermined initial start threshold value, then wait for predetermined retreat the period after, re-execute again the automatic adjusting stage of described carrier frequency.
Preferably, in the technique scheme, described selection step also can comprise: after described wait surpasses pre-determined number, the information that described Home eNodeB output indication can't be worked also enters holding state, after waiting for the predetermined period, re-execute the automatic adjusting stage of described carrier frequency, and described predetermined period is greater than the aforesaid predetermined period that retreats.
Preferably, in the technique scheme, described measuring process can be carried out the automatic adjusting stage of carrier frequency when described Home eNodeB continuous service.Described selection step can comprise: according to the channel width of described Home eNodeB, based on described a plurality of frequency ranges, form a plurality of frequency range set, each frequency range set can consist of the Uplink/Downlink channel of described Home eNodeB, calculate respectively the summation of the received signal strength index of each frequency range in each frequency range set, and from described a plurality of frequency range set, the summation of selective reception signal strength indicator is lower than the frequency range set of predetermined service feature threshold value, is used for consisting of the Uplink/Downlink channel of described Home eNodeB.When a plurality of frequency ranges set that existence satisfies condition, one of the summation minimum of selective reception signal strength indicator consists of required Uplink/Downlink channel.
Preferably, in the technique scheme, can start termly described measuring process according to the predetermined cycle; Start described measuring process in the time of perhaps can being lower than predeterminated level at current up/down row channel quality.
Preferably, in the technique scheme, when current up/down row channel quality was lower than predeterminated level and determines to start described measuring process, described Home eNodeB can at first be waited for random time interval, and then starts described measuring process.
Preferably, in the technique scheme, described selection step also can comprise: if there is no the summation of received signal strength index is lower than the frequency range set of predetermined service feature threshold value, then wait for predetermined retreat the period after, re-execute again the automatic adjusting stage of described carrier frequency.
Preferably, in the technique scheme, described selection step also can comprise: after described wait surpasses pre-determined number, the information that described Home eNodeB output indication can't be worked also enters holding state, after waiting for the predetermined period, re-execute the automatic adjusting stage of described carrier frequency, and described predetermined period is greater than the aforesaid predetermined period that retreats.
Preferably, in the technique scheme, after carrying out described set-up procedure, also can comprise: notify selected frequency range and adjustment information to described user terminal, so that described user terminal can be adjusted channel.
According to a further aspect in the invention, a kind of carrier frequency adjusting device of Home eNodeB has also been proposed, comprise: the resource division module, be used for the frequency resource of described Home eNodeB is divided into a plurality of frequency ranges, wherein the size of each frequency range is the greatest common divisor of the supported all types user terminal of the employed wireless access technology of Home eNodeB channel width; Measurement module is measured for the received signal strength index of described a plurality of each frequency ranges of frequency range that the resource division module is divided; And carrier frequency adjusting module, be used for the measurement result according to described measurement module, the selective reception signal strength indicator is lower than the band segment in the frequency range of predetermined threshold from described a plurality of frequency ranges, consist of the Uplink/Downlink channel of described Home eNodeB, and correspondingly adjust the carrier frequency of the Uplink/Downlink of described Home eNodeB.
Preferably, in the technique scheme, described measurement module can comprise for for the uplink measurement module of the received signal strength index of described a plurality of each frequency ranges of frequency range of uplink measurement and for the downlink measurement module of the received signal strength index of each frequency range in the described a plurality of frequency ranges of downlink measurement.
Preferably, in the technique scheme, described measurement module also can comprise average module, is used for respectively the value of repeatedly measuring of described uplink measurement module and downlink measurement module is averaged, to obtain final measurement result.
Preferably, in the technique scheme, described measurement module can comprise: the first frequency range set component units, be used for the automatic adjusting stage of carrier frequency when described Home eNodeB is installed for the first time or restarted, channel width according to described Home eNodeB, based on described a plurality of frequency ranges, form a plurality of frequency range set, each frequency range set can consist of the Uplink/Downlink channel of described Home eNodeB; And sum unit, be used for calculating respectively the summation of the received signal strength index of each frequency range in each frequency range set of described a plurality of frequency range set.
Correspondingly, described carrier frequency adjusting module can comprise: the first selected cell, be used for from described a plurality of frequency range set, and the summation of selective reception signal strength indicator is lower than the frequency range set of predetermined initial start threshold value; And adjustment unit, be used for utilizing selected frequency range to consist of the Uplink/Downlink channel of described Home eNodeB, and adjust the carrier frequency of the Uplink/Downlink of described Home eNodeB.
Preferably, in the technique scheme, described measurement module can comprise: the second frequency range set component units, be used for the automatic adjusting stage of carrier frequency when described Home eNodeB continuous service, channel width according to described Home eNodeB, based on described a plurality of frequency ranges, form a plurality of frequency range set, each frequency range set can consist of the Uplink/Downlink channel of described Home eNodeB; And sum unit, be used for calculating respectively the summation of the received signal strength index of each frequency range in each frequency range set of described a plurality of frequency range set.
Correspondingly, described carrier frequency adjusting module can comprise: the second selected cell, be used for from described a plurality of frequency range set, and the summation of selective reception signal strength indicator is lower than the frequency range set of predetermined service feature threshold value; And adjustment unit, be used for utilizing selected frequency range to consist of the Uplink/Downlink channel of described Home eNodeB, and adjust the carrier frequency of the Uplink/Downlink of described Home eNodeB.
Preferably, in the technique scheme, also can comprise: first starts module, is used for starting termly described measurement module according to the predetermined cycle; And/or second start module, is used for starting when current up/down row channel quality is lower than predeterminated level described measurement module.
Preferably, in the technique scheme, also can comprise: notification module, for frequency range and the adjustment information of notifying described carrier frequency adjusting module to select to described user terminal, so that described user terminal can be adjusted channel.
Compare with existing solution, at least one technical scheme in the technique scheme can solve the problem of inter-cell interference in the unsolved Home eNodeB deployment of prior art effectively, and has (but being not limited to) following advantage:
Can process well the dynamic of Home eNodeB running status, be noncontinuity and uncertainty, it so that the product of Home eNodeB can work in a kind of mode of plug and play, intended for end consumers and designing fully, existing solution then need to realize could implementing in the good coordination of planning at one, and this does not meet the demand of Home eNodeB;
Can satisfy Home eNodeB for the demand of system initialization, may be in one day even in the several hours frequent switch of Home eNodeB, and existing solution can't satisfy such demand;
Can with a kind of overall situation, mode optimization frequency resource utilization more flexibly, and existing solution can only be optimized in a kind of limited mode of part usually;
Can when solving ICI, realize the optimization to the frequency resource utilance, and existing solution can only solve one of them problem by emphasis;
The complexity of introducing can be controlled between physical layer and Home eNodeB and the user terminal well, there is not extra overhead to introduce network, and existing scheme may need between the BS and the Signalling exchange between BS and the CN, because the quantity that Home eNodeB is disposed is larger, this can bring huge signaling consumption for network, thereby hinders the deployment of Home eNodeB;
Design for the evolution version that has the Home eNodeB product now, can be applied to IMT-Advanced, existing scheme then mainly is the Home NodeB product for 3G, small part is only arranged for LTE.
Description of drawings
According to detailed description with the accompanying drawing hereinafter, above-mentioned and other feature and advantage of the present invention will be more apparent, wherein:
Fig. 1 is the flow chart according to the embodiment one of the carrier frequency regulation method of Home eNodeB of the present invention;
Fig. 2 shows automatic adjusting stage of carrier frequency when described Home eNodeB is installed for the first time or restarted and carries out the schematic flow sheet of the illustrative embodiments of described measuring process;
Fig. 3 shows automatic adjusting stage of carrier frequency when described Home eNodeB Home eNodeB continuous service and carries out the schematic flow sheet of the illustrative embodiments of described measuring process;
Fig. 4 provides the formation of the set of system frequency resource in the continuous physically situation.；
Fig. 5 provides the formation of system frequency resource set in the discontinuous physically situation;
Fig. 6 is the self-adjusting illustrative diagram of carrier frequency when described Home eNodeB is installed for the first time or restarted according to the present invention;
Fig. 7 is self-adjusting another illustrative diagram of the carrier frequency when described Home eNodeB is installed for the first time or restarted according to the present invention;
Fig. 8 is the self-adjusting illustrative diagram of carrier frequency during according to Home eNodeB Home eNodeB continuous service of the present invention;
Fig. 9 is self-adjusting another illustrative diagram of carrier frequency during according to Home eNodeB Home eNodeB continuous service of the present invention; And
Figure 10 is the structural representation according to the embodiment one of the carrier frequency adjusting device of Home eNodeB of the present invention.
Embodiment
With reference to the accompanying drawings illustrative examples of the present invention is further elaborated.
With reference to Fig. 1, Fig. 1 is the flow chart according to the embodiment one of the carrier frequency regulation method of Home eNodeB of the present invention.As shown in Figure 1, present embodiment one may further comprise the steps: at first in step S1, the frequency resource of Home eNodeB is divided into a plurality of frequency ranges, and wherein the size of each frequency range is the greatest common divisor of the supported all types of user terminal channel widths of the employed wireless access technology of Home eNodeB; Then in step S2, the received signal strength index of each frequency range in described a plurality of frequency ranges is measured; Subsequently in step S3, result according to described measurement, the selective reception signal strength indicator is lower than the band segment in the frequency range of predetermined threshold value from described a plurality of frequency ranges, consist of the Uplink/Downlink channel of described Home eNodeB, and correspondingly adjust the Uplink/Downlink carrier frequency of described Home eNodeB.
Because user terminal can be supported dissimilar channel width, such as 10MHz, 20MHz, 40MHz etc., and Home eNodeB need to satisfy the bandwidth demand of user terminal.Therefore the channel width that adopts of Home eNodeB depends primarily on this Home eNodeB and need to support which kind of user terminal.In the present embodiment one, Home eNodeB is divided into a plurality of frequency ranges take the greatest common divisor of the supported all types of user terminal channel widths of employed wireless access technology as base unit with its frequency resource.For example, if user terminal is supported 10MHz and two kinds of channel widths of 20MHz, then its common divisor is 10MHz, and therefore according to present embodiment one, Home eNodeB is divided himself available frequency resource take 10MHz as unit.
In present embodiment one, after dividing frequency resource, Home eNodeB is measured the received signal strength index (Band Received Signal Strength Indicator, B-RSSI) of each frequency range of being divided into.Preferably, in the present embodiment one, described measuring process S2 can comprise for the received signal strength index of each frequency range in the described a plurality of frequency ranges of uplink measurement and for the received signal strength index of each frequency range in the described a plurality of frequency ranges of downlink measurement and measuring.In addition, described measuring process S2 can comprise: start described user terminal to assist to finish described measurement for down link, perhaps, possess at Home eNodeB in the situation of downlink measurement ability, finish voluntarily described measurement for down link by described Home eNodeB, and finish voluntarily described measurement for up link by described Home eNodeB.
Preferably, in the present embodiment one, described measuring process S2 can comprise: the B-RSSI to each frequency range in described a plurality of frequency ranges takes multiple measurements, and the described value of repeatedly measuring is averaged, to obtain final measurement result.
In the present embodiment one, described measuring process S2 can carry out the automatic adjusting stage of carrier frequency when described Home eNodeB is installed for the first time or restarted, and also can carry out the automatic adjusting stage of carrier frequency when described Home eNodeB continuous service.
Fig. 2 shows automatic adjusting stage of carrier frequency when described Home eNodeB is installed for the first time or restarted and carries out the schematic flow sheet of the illustrative embodiments of described measuring process.
As shown in Figure 2, at first in step S1, the frequency resource of Home eNodeB is divided into a plurality of frequency ranges, wherein the size of each frequency range is the greatest common divisor of the supported all types of user terminal channel widths of the employed wireless access technology of Home eNodeB, and according to the channel width of described Home eNodeB, based on described a plurality of frequency ranges, form a plurality of frequency range set, each frequency range set can consist of the Uplink/Downlink channel of described Home eNodeB.
Then in step S21, take the minimum performance requirement of the user terminal of system's support as target, initial start thresholding Th_initial is set.It for example can be the interference strength that system can bear when using the Modulation and Coding Scheme of robust.
In step S22, calculate respectively the summation of the received signal strength index of each frequency range in each frequency range set subsequently.For example, if Home eNodeB needs n frequency range to consist of the Uplink/Downlink channel of self needs, the B-RSSI that then needs to calculate n Continuous Band in the frequency range set with.If available frequency resources can be divided into N frequency range, the frequency range of the n that then a comprises Continuous Band is gathered N-n+1 (N 〉=n).
By step S23 and S24, from described a plurality of frequency range set, the summation of selective reception signal strength indicator is lower than the frequency range set of the initial start threshold value of described setting, is used for consisting of the Uplink/Downlink channel of described Home eNodeB subsequently.If there are a plurality of frequency range set of satisfying above-mentioned condition, then can select a wherein frequency range set of the summation minimum of received signal strength index.
In step S25, start working at last.
In addition, as shown in Figure 2, in step S27, if there is no the summation of received signal strength index is lower than the frequency range set of predetermined initial start threshold value, then waits for the predetermined period T that retreats
1After, re-execute again the automatic adjusting stage of described carrier frequency.In step S28 and step S29, after described wait surpassed pre-determined number, then the information that described Home eNodeB output indication can't be worked in step S30, was waiting for predetermined period T
2(T
2Greater than T
1) re-execute afterwards the automatic adjusting stage of described carrier frequency.
Fig. 3 shows automatic adjusting stage of carrier frequency when described Home eNodeB Home eNodeB continuous service and carries out the schematic flow sheet of the illustrative embodiments of described measuring process.
As shown in Figure 3, check at first whether the condition that starts described measuring process satisfies, and for example, can start termly described measuring process according to the predetermined cycle (is periodic manner, cycle can be second level or ten seconds levels, to avoid measuring too frequently the overhead of increase system); Start described measuring process (event driven manner) in the time of perhaps can being lower than predeterminated level at current up/down row channel quality.Figure 3 illustrates the latter's situation, that is, and in step S31, if satisfy the condition that current up/down row channel quality is lower than predeterminated level, the then handling process of trigger event driven mode in step S32.
Then in step S33, described Home eNodeB is at first waited for random time interval, and then start to measure, and starts simultaneously with the Home eNodeB of avoiding a plurality of phase mutual interference and measures and cause the distortion of measurement result.
Subsequently in step S34, service feature thresholding Th_service is set, namely in the coverage that reaches current selection and can support minimum quality of service (QoS) demand of the user terminal that current Home eNodeB is served the time, the interference strength that system can bear.
Then in step S35, channel width according to described Home eNodeB, based on described a plurality of frequency ranges, form a plurality of frequency range set, each frequency range set can consist of the Uplink/Downlink channel of described Home eNodeB, calculates respectively the summation of the received signal strength index of each frequency range in each frequency range set, for example, if Home eNodeB needs n frequency range to consist of the Uplink/Downlink channel of self needs, the B-RSSI that then needs to calculate n Continuous Band in the frequency range set with.If available frequency resources can be divided into N frequency range, the frequency range of the n that then a comprises Continuous Band is gathered N-n+1 (N 〉=n).
In step S36 and S37, from described a plurality of frequency range set, the summation of selective reception signal strength indicator is lower than the frequency range set of predetermined service feature threshold value, is used for consisting of the Uplink/Downlink channel of described Home eNodeB subsequently.When a plurality of frequency ranges set that existence satisfies condition, one of the summation minimum of selective reception signal strength indicator consists of required Uplink/Downlink channel.
Then notify selected frequency range and adjustment information to described user terminal, so that described user terminal can be adjusted the channel (not shown).
In step S38, beginning is worked at new carrier frequency at last.
Preferably, as shown in Figure 3, in step S39, if there is no the summation of received signal strength index is lower than the frequency range set of predetermined service feature threshold value, then wait for predetermined retreat period T1 after, re-execute again step S35.In step S40 and S41, after described wait surpassed pre-determined number, the information that the output indication can't be worked re-executed step S34 after the period T2 that wait is scheduled in step S42.
Compare with existing solution, above-described embodiment can solve the problem of inter-cell interference in the unsolved Home eNodeB deployment of prior art effectively, and has (but being not limited to) following advantage: the dynamic that can process well the Home eNodeB running status, be noncontinuity and uncertainty, it so that the product of Home eNodeB can work in a kind of mode of plug and play, intended for end consumers and designing fully, existing solution then need to realize could implementing in the good coordination of planning at one, and this does not meet the demand of Home eNodeB; Can satisfy Home eNodeB for the demand of system initialization, may be in one day even in the several hours frequent switch of Home eNodeB, and existing solution can't satisfy such demand; Can with a kind of overall situation, mode optimization frequency resource utilization more flexibly, and existing solution can only be optimized in a kind of limited mode of part usually; Can when solving ICI, realize the optimization to the frequency resource utilance, and existing solution can only solve one of them problem by emphasis; The complexity of introducing can be controlled between physical layer and Home eNodeB and the user terminal well, there is not extra overhead to introduce network, and existing scheme may need between the BS and the Signalling exchange between BS and the CN, because the quantity that Home eNodeB is disposed is larger, this can bring huge signaling consumption for network, thereby hinders the deployment of Home eNodeB; Design for the evolution version that has the Home eNodeB product now, can be applied to IMT-Advanced, existing scheme then mainly is the Home NodeB product for 3G, small part is only arranged for LTE.
Preferably, in above-described embodiment, because the frequency resource that uplink downlink can be used is different, the division of frequency resource can adopt identical method to carry out respectively, that is, the division of the division of uplink frequency resource and down-link frequencies resource is irrelevant, and vice versa.
Take down link as example, set up departments the system Home eNodeB can with the frequency resource total amount be B, and the greatest common divisor of all channel width types that the user terminal of Home eNodeB support can be supported is B
MinThen adopt B
MinAs elementary cell, thereby the frequency resource of system is divided into N part, B
1, B
2..., B
N:
B
1=B
2=... ,=B
N=B
Min
Wherein, the frequency resource that Home eNodeB can be used can be identical with the frequency resource that macro base station (Macro Base Station M-BS) uses, also can be different from the frequency resource that M-BS uses, and this depends on the requirement of system frequency resource planning.In addition, the frequency resource that allows to use can be continuous, also can be discontinuous.
Fig. 4 has illustrated the division of system frequency resource in the continuous physically situation.If the frequency resource that system allows is 60MHz, then Fig. 4 (a) expression is the division when being 10MHz of minimum channel bandwidth that user terminal adopts, Fig. 4 (b) expression be the division when being 20MHz of minimum channel bandwidth that user terminal adopts.
Fig. 5 has illustrated the division of system frequency resource in the discontinuous physically situation.
The division that it will be understood by those of skill in the art that frequency resource is determined that by Home eNodeB it may be different that the frequency resource that different Home eNodeB is determined is divided.
Similarly, for the first installation of carrier frequency or for the carrier frequency when restarting adjusted automatically, uplink downlink also can adopt identical method to finish respectively, namely, the automatic adjustment of uplink carrier frequency and the automatic adjustment of downlink carrier frequency are irrelevant, and vice versa.
Take down link as example, after available frequency resources was divided into a plurality of frequency ranges, Home eNodeB need to be to each frequency range B in a plurality of frequency ranges
1, B
2..., B
NB-RSSI measure, with the B-RSSI measurement result as the index of estimating interference level.
If Home eNodeB
iThe channel width of selecting is B
Home eNodeB i, then need the n in a plurality of frequency ranges
iIndividual frequency range consists of Home eNodeB
iChannel.Home eNodeB
iNeed to from a plurality of frequency ranges, select n
iB-RSSI in the individual Continuous Band
SumSatisfy condition and minimum set consists of self channel.
For example, the system of setting up departments allows Home eNodeB
1The frequency resource of using is the 80MHz cline frequency.Home eNodeB then
1The greatest common divisor of supported all the channel width types of user terminal of supporting is 20MHz.If Home eNodeB
1The channel width of selecting is 40MHz, and a plurality of frequency range comprises by B
1..., B
4Consist of, then Home eNodeB
1To B
1, B
2..., B
4The measurement result of B-RSSI as shown in table 1.
Table 1 Home eNodeB
1B-RSSI measurement result signal table
According to Home eNodeB
1The channel width of selecting needs two continuous frequency ranges could consist of Home eNodeB
1Channel, i.e. n
1=2.
Therefore, need the B-RSSI summation of two Continuous Bands of calculating (to be expressed as B-RSSI
Sum), its result is as shown in table 2, i.e. B-RSSI
SumComputational methods as follows:
Wherein, k=1,2 ..., N-n
i+ 1, i is the Home eNodeB numbering.
Definition:
y＝log?2lin(x)＝10
x/10，x∈(-∞，∞)，
y＝lin2log(x)＝10·log10(x)，x∈(0，∞)。
Table 2 Home eNodeB
1B-RSSI
Sum
Measurement result and B-RSSI from B-RSSI
SumResult of calculation can find out B
4Interference level higher, it has been that the Home eNodeB of 20MHz is shared by a channel width probably.
If the initial start thresholding Th_initial that determines according to the user terminal minimum performance requirement is-93dBm.Then according to B-RSSI
SumResult of calculation can see B
1And B
2And B
2And B
3The band interference level that consists of all is lower than Th_initial, but B
1And B
2B-RSSI
SumMinimum.Therefore, Home eNodeB 1 selects these two frequency ranges to be used as the channel of oneself, thereby determines carrier frequency.
As shown in Figure 6, if can't find B-RSSI
SumBe lower than the frequency range set of Th_initial, then Home eNodeB
1Need one period stipulated time of rollback, and then detect whether there is the frequency range set that satisfies condition.After retreating above stipulated number, Home eNodeB
1Point out and to work.
Suppose to finish initial start successfully after the start work at Home eNodeB 1, also begin to carry out initial start with the contiguous one family base station 2 of Home eNodeB 1 and prepare start.For convenience of explanation, the frequency resource that supposing the system allows Home eNodeB 2 to use is identical with Home eNodeB 1, and channel width and Home eNodeB 2 selected channel widths that the user terminal of establishing Home eNodeB 2 service is supported are also identical with Home eNodeB 1, and then the division of the frequency resource that can use of Home eNodeB 2 is also identical with Home eNodeB 1.Need to prove, actual conditions also do not require that different Home eNodeB configurations is identical, because different Home eNodeB may there are differences aspect ability, also may be because the priority of Home eNodeB be different, system allows the frequency resource of use also different, and just these differences are implemented can not impact to the method for the application's proposition.
If 2 couples of frequency range B of Home eNodeB
1..., B
4The measurement result of B-RSSI as shown in table 3.
The B-RSSI measurement result of table 3 Home eNodeB 2
According to Home eNodeB
2The bandwidth mode of selecting needs two continuous frequency ranges could consist of Home eNodeB
2Channel, i.e. n
2=2, therefore needs calculate the B-RSSI of two Continuous Bands
Sum, the result is as shown in table 4.
Table 4 Home eNodeB
2B-RSSI
SumMeasurement result
Measurement result and B-RSSI from B-RSSI
SumResult of calculation can see B
1And B
2At Home eNodeB
1Interference level obviously promotes after the start work.But B
2And B
3B-RSSI
SumStill be lower than Th_initial, although so B
2Frequency range is taken by Home eNodeB 1, only has B
3Also be in idle condition, Home eNodeB 2 still can be selected B
2And B
3These two frequency ranges consist of the channel of oneself, thereby determine carrier frequency.
As shown in Figure 7, if can't find B-RSSI
SumBe lower than the frequency range of Th_initial, Home eNodeB 2 needs one period stipulated time of rollback, detects whether there is the frequency range that satisfies condition again.After retreating above stipulated number, Home eNodeB 2 will be pointed out and can't be worked.
Carrier frequency during for continuous service is adjusted automatically, and uplink downlink also can adopt identical method to finish respectively, i.e. the automatic adjustment of the automatic adjustment of uplink carrier frequency and downlink carrier frequency is irrelevant, and vice versa.
The self-adjusting measurement of carrier frequency during continuous service and the trigger mechanism of dynamically adjusting can be periodically also can be event driven.It should be noted that, the automatic adjusting stage of carrier frequency when continuous service need to avoid the Home eNodeB of phase mutual interference to abandon simultaneously the frequency range of current use, because in case frequency resource that the part Home eNodeB selected other is arranged as channel, the interference of current frequency range will be alleviated.
For the mode that adopts periodic triggers, because the measurement that the start between the Home eNodeB is incoherent mutually, different Home eNodeB to be adopted also may be different with adjustment cycle, therefore can avoid to a great extent the appearance of this situation.But for adopting event driven mode, the Home eNodeB of phase mutual interference may be found the existence disturbed simultaneously, adjusts simultaneously for fear of them, need to Home eNodeB detect disturb enter adjust flow process after, at first select a random back-off time.
Take down link as example, in the carrier frequency self-regulating process when continuous service, might as well suppose Home eNodeB
1At first starting adjustment (may be Home eNodeB
1Measurement and the ratio Home eNodeB that arrives of update cycle
2Early, also may be Home eNodeB
1The random back-off time of selecting is shorter, and this depends on Home eNodeB
1The adjustment trigger mechanism that adopts).Home eNodeB
1To frequency range B
1..., B
4The B-RSSI measurement result as shown in table 5, B-RSSI
SumThe result is as shown in table 6.
Table 5 Home eNodeB
1The B-RSSI measurement result
Table 6 Home eNodeB
1B-RSSI
SumMeasurement result
If according to Home eNodeB
1The minimum performance requirement of the user terminal of current service and definite service feature thresholding Th_service is-93dBm.With B-RSSI
SumResult and Th_service compare, Home eNodeB
1Select B
3And B
4As new channel, adjust carrier frequency, and the notice Home eNodeB
1The band information that the user terminal of service upgrades and the time of renewal.
B
4The free time of frequency range may be owing to take the Home eNodeB shutdown of this frequency range before or enter resting state.Adjust the result as shown in Figure 8.If can't find B-RSSI
SumBe lower than the frequency range of Th_service, then Home eNodeB
1Need one period stipulated time of rollback to detect again whether have the frequency range that satisfies condition.After retreating above stipulated number, Home eNodeB
1Point out and to work.
Suppose Home eNodeB
2At Home eNodeB
1Starting adjustment afterwards (may be Home eNodeB
2Measurement and the ratio Home eNodeB that arrives of update cycle
2Also may be that the random back-off time of Home eNodeB 1 selection is longer evening, and this depends on Home eNodeB
2The adjustment trigger mechanism that adopts), and at Home eNodeB
1Abandon B
1And B
2After, there is not other Home eNodeB to take relevant frequency range, establish Home eNodeB
2To frequency range B
1..., B
4The measurement result of B-RSSI as shown in table 7, B-RSSI
SumThe result is as shown in table 8.
Table 7 Home eNodeB
2The B-RSSI measurement result
Table 8 Home eNodeB
2B-RSSI
SumMeasurement result
According to the result, B
1And B
2B-RSSI
SumBe lower than Th_service, Home eNodeB
2Select B
1And B
2As new channel, adjust carrier frequency, and cross system broadcasts, the notice Home eNodeB
2User terminal, the band information of renewal and the time of renewal of service.
Adjust the result as shown in Figure 9.If can't find B-RSSI
SumBe lower than the frequency range of Th_service, Home eNodeB
2Need one period stipulated time of rollback to detect again whether have the frequency range that satisfies condition.After retreating above stipulated number, Home eNodeB
2Point out and to work.
In some cases, Home eNodeB may occur when carrying out the automatic adjustment of carrier frequency, temporarily can't find enough available frequency bands (interference level is lower than specified thresholds), so-called abnormal conditions that Here it is.When abnormal conditions occurring, Home eNodeB need to be waited for one section with respect to retreating time T
1Longer a period of time T
2, again attempt finishing again the automatic adjustment of carrier frequency.
For first installation or the abnormal conditions in the carrier frequency self-regulating process when restarting, we suppose that still take Home eNodeB 2 as example basic system configuration is constant.In the carrier frequency self-regulating process when Home eNodeB 2 is installed for the first time or restarted, primary measurement result is shown in table 9 and table 10.
Table 9 Home eNodeB
2The B-RSSI measurement result
Table 10 Home eNodeB
2B-RSSI
SumMeasurement result
Owing to there is not the B-RSSI of two Continuous Bands
SumBe lower than Th_intial, Home eNodeB
2Need slow astern section time T
1After, re-start again measurement, after retreating above stipulated number, Home eNodeB
2Need to enter standby mode, wait for one section longer time T
2After restart the carrier frequency self-regulating process.
Abnormality processing in the automatic adjusting stage process of carrier frequency during for continuous service is with Home eNodeB
1Be example, suppose at Home eNodeB
1Before carrier frequency when implementing continuous service is adjusted automatically, Home eNodeB
2Find available frequency band in the carrier frequency self-regulating process when continuous service, start working, frequency range takies situation as shown in Figure 7.If Home eNodeB
1Measurement result shown in table 11 and table 12.
Table 11 Home eNodeB
1The B-RSSI measurement result
Table 12 Home eNodeB
1B-RSSI
SumMeasurement result
This moment may frequency range B
4As describing in the example, the front is not released, therefore, and Home eNodeB
1Also can't find available frequency band, Home eNodeB
1A period of time T need to work in the frequency range of current use
1After, re-start again and measure and comparison, after retry surpasses stipulated number, Home eNodeB
1Need to enter standby mode, wait for one section longer time T
2After restart the carrier frequency self-regulating process.
According to a further aspect in the invention, also proposed a kind of Home eNodeB, Figure 10 is the structural representation of the embodiment one of Home eNodeB of the present invention.As shown in figure 10, present embodiment one comprises: resource division module 101, be used for the frequency resource of described Home eNodeB is divided into a plurality of frequency ranges, wherein the size of each frequency range is the greatest common divisor of the supported all types user terminal of the employed wireless access technology of Home eNodeB channel width; Measurement module 102 is measured for the received signal strength index of described a plurality of each frequency ranges of frequency range that resource division module 101 is divided; And carrier frequency adjusting module 103, be used for the measurement result according to described measurement module 102, the selective reception signal strength indicator is lower than the band segment in the frequency range of predetermined threshold value from described a plurality of frequency ranges, consist of the Uplink/Downlink channel of described Home eNodeB, and correspondingly adjust the carrier frequency of the Uplink/Downlink of described Home eNodeB.
In above-described embodiment one, by provide carrier frequency self-adjusting ability for Home eNodeB, simplified the deployment of Home eNodeB; Improve system spectral efficiency and throughput, improved user's QoE; Also prepare to IMT-Advanced evolution for Home eNodeB in addition.
It will be understood by those of skill in the art that above-described embodiment one only is the composition that shows by way of example according to the functional module of Home eNodeB of the present invention, it limits absolutely not the present invention.Those skilled in the art can be according to the demand of concrete application scenarios; make up neatly or split the above-mentioned functions module; perhaps the above-mentioned functions module can be set integrally; storage medium etc. the various forms of perhaps also can be with software, hardware, firmware, recording the program that realizes the above-mentioned functions functions of modules is realized the above-mentioned functions module, and it all should be within the claimed scope of claim of the present invention.
Compare with existing solution, above-described embodiment one can solve the minizone of the unsolved Home eNodeB of prior art in disposing/inter base station interference problem effectively, and has (but being not limited to) following advantage: the dynamic that can process well the Home eNodeB running status, be noncontinuity and uncertainty, it so that the product of Home eNodeB can work in a kind of mode of plug and play, intended for end consumers and designing fully, existing solution then need to realize could implementing in the good coordination of planning at one, and this does not meet the demand of Home eNodeB; Can satisfy Home eNodeB for the demand of system initialization, may be in one day even in the several hours frequent switch of Home eNodeB, and existing solution can't satisfy such demand; Can with a kind of overall situation, mode optimization frequency resource utilization more flexibly, and existing solution can only be optimized in a kind of limited mode of part usually; Can when solving ICI, realize the optimization to the frequency resource utilance, and existing solution can only solve one of them problem by emphasis; The complexity of introducing can be controlled between physical layer and Home eNodeB and the user terminal well, there is not extra overhead to introduce network, and existing scheme may need between the BS and the Signalling exchange between BS and the CN, because the quantity that Home eNodeB is disposed is larger, this can bring huge signaling consumption for network, thereby hinders the deployment of Home eNodeB; Design for the evolution version that has the Home eNodeB product now, can be applied to IMT-Advanced, existing scheme then mainly is the Home NodeB product for 3G, small part is only arranged for LTE.
Preferably, in the technique scheme, described measurement module can comprise for for the uplink measurement module of the received signal strength index of described a plurality of each frequency ranges of frequency range of uplink measurement and for the downlink measurement module of the received signal strength index of each frequency range in the described a plurality of frequency ranges of downlink measurement.
Preferably, in the technique scheme, described measurement module also can comprise average module, is used for respectively the value of repeatedly measuring of described uplink measurement module and downlink measurement module is averaged, to obtain final measurement result.
Preferably, in the technique scheme, described measurement module can comprise: the first frequency range set component units, be used for the automatic adjusting stage of carrier frequency when described Home eNodeB is installed for the first time or restarted, channel width according to described Home eNodeB, based on described a plurality of frequency ranges, form a plurality of frequency range set, each frequency range set can consist of the Uplink/Downlink channel of described Home eNodeB; And sum unit, be used for calculating respectively the summation of the received signal strength index of each frequency range in each frequency range set of described a plurality of frequency range set.Described carrier frequency adjusting module can comprise: the first selected cell, be used for from described a plurality of frequency range set, and the summation of selective reception signal strength indicator is lower than the frequency range set of predetermined initial start threshold value; And adjustment unit, be used for utilizing selected frequency range to consist of the Uplink/Downlink channel of described Home eNodeB, and adjust the carrier frequency of the Uplink/Downlink of described Home eNodeB.
Preferably, in the technique scheme, described measurement module can comprise: the second frequency range set component units, be used for the automatic adjusting stage of carrier frequency when described Home eNodeB continuous service, channel width according to described Home eNodeB, based on described a plurality of frequency ranges, form a plurality of frequency range set, each frequency range set can consist of the Uplink/Downlink channel of described Home eNodeB; And sum unit, be used for calculating respectively the summation of the received signal strength index of each frequency range in each frequency range set of described a plurality of frequency range set.Described carrier frequency adjusting module can comprise: the second selected cell, be used for from described a plurality of frequency range set, and the summation of selective reception signal strength indicator is lower than the frequency range set of predetermined service feature threshold value; And adjustment unit, be used for utilizing selected frequency range to consist of the Uplink/Downlink channel of described Home eNodeB, and adjust the carrier frequency of the Uplink/Downlink of described Home eNodeB.
Preferably, in the technique scheme, also can comprise: first starts module, is used for starting termly described measurement module according to the predetermined cycle; And/or second start module, is used for starting when current up/down row channel quality is lower than predeterminated level described measurement module.
Preferably, in the technique scheme, also can comprise: indicating module, for frequency range and the adjustment information of indicating described carrier frequency adjusting module to select to described user terminal, so that described user terminal can be adjusted channel.
From the above, by adopting Home eNodeB provided by the present invention so that operator not need be that Home eNodeB is implemented the network planning, thereby can be absorbed in the problems such as the authentication that solves its concern, charging; And because the spectrum efficiency that the present invention realizes and the lifting of throughput of system according to Home eNodeB of the present invention, can provide more eurypalynous value-added service by large scale deployment.In addition, for the terminal use, by adopting according to Home eNodeB of the present invention, can manage by the mode of plug and play their equipment.In addition, from the above, the complexity that the method according to this invention and Home eNodeB are introduced is limited, and consistent with the evolution direction of existing BWA.
Although illustrated and illustrated exemplary embodiments more of the present invention, those of ordinary skill in the art is to be understood that, can carry out various replacements or change to these embodiment, and do not break away from principle of the present invention and spirit, do not break away from by appended claim yet and replace on an equal basis limited range.
Claims (20)
1. the carrier frequency regulation method of a Home eNodeB may further comprise the steps:
The Uplink/Downlink available frequency resources of Home eNodeB is divided into a plurality of frequency ranges, and wherein the size of each frequency range is the greatest common divisor of the supported all types of user terminal channel widths of the employed wireless access technology of Home eNodeB;
Received signal strength index to each frequency range in described a plurality of frequency ranges is measured; And
Result according to described measurement, the selective reception signal strength indicator is lower than the band segment in the frequency range of predetermined threshold from described a plurality of frequency ranges, consist of the Uplink/Downlink channel of described Home eNodeB, and correspondingly adjust the Uplink/Downlink carrier frequency of described Home eNodeB.
2. method according to claim 1, wherein said measuring process comprise for the received signal strength index of each frequency range in the described a plurality of frequency ranges of uplink measurement and for the received signal strength index of each frequency range in the described a plurality of frequency ranges of downlink measurement.
3. method according to claim 2, wherein said measuring process comprises:
Start described user terminal to assist to finish for the described measurement of down link or by described Home eNodeB and finish voluntarily described measurement for down link, and
Finish voluntarily described measurement for up link by described Home eNodeB.
4. method according to claim 1, wherein said measuring process comprises: the received signal strength index to each frequency range in described a plurality of frequency ranges takes multiple measurements, and the described value of repeatedly measuring is averaged, to obtain final measurement result.
5. method according to claim 1, wherein
Described measuring process is to carry out the automatic adjusting stage of the carrier frequency when described Home eNodeB is installed for the first time or restarted; And
Described selection step comprises:
According to the channel width of described Home eNodeB, based on described a plurality of frequency ranges, form a plurality of frequency range set, each frequency range set can consist of the Uplink/Downlink channel of described Home eNodeB,
Calculate respectively the summation of the received signal strength index of each frequency range in each frequency range set, and
From described a plurality of frequency range set, the summation of selective reception signal strength indicator is lower than the frequency range set of predetermined initial start threshold value, be used for consisting of the Uplink/Downlink channel of described Home eNodeB, when a plurality of frequency ranges set that existence satisfies condition, one of the summation minimum of selective reception signal strength indicator consists of required Uplink/Downlink channel.
6. method according to claim 5, wherein said selection step also comprises: if there is no the summation of received signal strength index is lower than the frequency range set of predetermined initial start threshold value, then wait for predetermined retreat the period after, re-execute again the automatic adjusting stage of described carrier frequency.
7. method according to claim 6, wherein said selection step also comprises: after described wait surpasses pre-determined number, the information that described Home eNodeB output indication can't be worked, after waiting for the predetermined period, re-execute the automatic adjusting stage of described carrier frequency, and described predetermined period is greater than the described predetermined period that retreats.
8. method according to claim 1, wherein
Described measuring process is to carry out the automatic adjusting stage of the carrier frequency when described Home eNodeB continuous service; And
Described selection step comprises:
According to the channel width of described Home eNodeB, based on described a plurality of frequency ranges, form a plurality of frequency range set, each frequency range set can consist of the Uplink/Downlink channel of described Home eNodeB,
Calculate respectively the summation of the received signal strength index of each frequency range in each frequency range set, and
From described a plurality of frequency range set, the summation of selective reception signal strength indicator is lower than the frequency range set of predetermined service feature threshold value, consist of the Uplink/Downlink channel of described Home eNodeB with son, when a plurality of frequency ranges set that existence satisfies condition, one of the summation minimum of selective reception signal strength indicator consists of required Uplink/Downlink channel.
9. method according to claim 8 wherein also comprises:
Start termly described measuring process according to the predetermined cycle; Perhaps
When being lower than predeterminated level, current up/down row channel quality starts described measuring process.
10. method according to claim 9 wherein also comprises:
Be lower than predeterminated level at current up/down row channel quality, and when determining to start described measuring process, described Home eNodeB is at first waited for random time interval, and then starts described measuring process.
11. method according to claim 8, wherein said selection step also comprises: if there is no the summation of received signal strength index is lower than the frequency range set of predetermined service feature threshold value, then wait for predetermined retreat the period after, re-execute again the automatic adjusting stage of described carrier frequency.
12. method according to claim 11, wherein said selection step also comprises; After described wait surpasses pre-determined number, the information that described Home eNodeB output indication can't be worked also enters holding state, after waiting for the predetermined period, re-execute the automatic adjusting stage of described carrier frequency, and the described predetermined period that retreats of described predetermined large son of period.
13. arbitrary described method according to claim 8-12 wherein also comprises after carrying out described set-up procedure:
Indicate selected frequency range and adjustment information to described user terminal, so that described user terminal can correspondingly be adjusted channel.
14. the carrier frequency adjusting device of a Home eNodeB comprises:
The resource division module is used for the frequency resource of described Home eNodeB is divided into a plurality of frequency ranges, and wherein the size of each frequency range is the greatest common divisor of the supported all types user terminal of the employed wireless access technology of Home eNodeB channel width;
Measurement module is measured for the received signal strength index of described a plurality of each frequency ranges of frequency range that the resource division module is divided; And
The carrier frequency adjusting module, be used for the measurement result according to described measurement module, the selective reception signal strength indicator is lower than the band segment in the frequency range of predetermined threshold from described a plurality of frequency ranges, consist of the Uplink/Downlink channel of described Home eNodeB, and correspondingly adjust the carrier frequency of the Uplink/Downlink of described Home eNodeB.
15. the carrier frequency adjusting device of Home eNodeB according to claim 14, wherein said measurement module comprise for for the uplink measurement module of the received signal strength index of described a plurality of each frequency ranges of frequency range of uplink measurement and for the downlink measurement module of the received signal strength index of each frequency range in the described a plurality of frequency ranges of downlink measurement.
16. the carrier frequency adjusting device of Home eNodeB according to claim 15, wherein said measurement module also comprises average module, be used for respectively the value of repeatedly measuring of described uplink measurement module and downlink measurement module is averaged, to obtain final measurement result.
17. the carrier frequency adjusting device of Home eNodeB according to claim 14, wherein:
Described measurement module comprises: the first frequency range set component units, be used for the automatic adjusting stage of carrier frequency when described Home eNodeB is installed for the first time or restarted, channel width according to described Home eNodeB, based on described a plurality of frequency ranges, form a plurality of frequency range set, each frequency range set can consist of the Uplink/Downlink channel of described Home eNodeB; And sum unit, be used for calculating respectively the summation of the received signal strength index of each frequency range in each frequency range set of described a plurality of frequency range set; And
Described carrier frequency adjusting module comprises: the first selected cell, be used for from described a plurality of frequency range set, and the summation of selective reception signal strength indicator is lower than the frequency range set of predetermined initial start threshold value; And adjustment unit, be used for utilizing selected frequency range to consist of the Uplink/Downlink channel of described Home eNodeB, and adjust the carrier frequency of the Uplink/Downlink of described Home eNodeB.
18. the carrier frequency adjusting device of the Home eNodeB of being confused according to claim 14, wherein:
Described measurement module comprises: the second frequency range set component units, with the carrier frequency automatic adjusting stage of son when the fan Home eNodeB continuous service, channel width according to described Home eNodeB, the described a plurality of frequency ranges of base, form a plurality of frequency range set, each frequency range set can consist of the Uplink/Downlink channel of described Home eNodeB; And sum unit, be used for calculating respectively the summation of the received signal strength index of each frequency range in each frequency range set of described a plurality of frequency range set; And
Described carrier frequency adjusting module comprises: the second selected cell, be used for from described a plurality of frequency range set, and the summation of selective reception signal strength indicator is lower than the frequency range set of predetermined service feature threshold value; And adjustment unit, be used for utilizing selected frequency range to consist of the Uplink/Downlink channel of described Home eNodeB, and adjust the carrier frequency of the Uplink/Downlink of described Home eNodeB.
19. the carrier frequency adjusting device of Home eNodeB according to claim 18 also comprises:
First starts module, is used for starting termly described measurement module according to the predetermined cycle; And/or
Second starts module, is used for starting when current up/down row channel quality is lower than predeterminated level described measurement module.
20. the carrier frequency adjusting device of arbitrary described Home eNodeB according to claim 14-19 also comprises:
Indicating module is for frequency range and the adjustment information of having indicated described carrier frequency adjusting module to select to described user terminal, so that described user terminal can correspondingly be adjusted channel.
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| CN102769852B (en) * | 2012-07-16 | 2015-05-13 | 京信通信系统（中国）有限公司 | Method, device and system for controlling interference for femtocells |
| CN103841565B (en) * | 2014-03-19 | 2015-05-20 | 宇龙计算机通信科技(深圳)有限公司 | Interference coordination and measurement method and device, base station and terminal |
| CN105208656B (en) * | 2014-06-19 | 2019-05-17 | 上海诺基亚贝尔股份有限公司 | The method and apparatus of distribution channel band suitable for LTE-U system |
| CN112260741B (en) * | 2020-11-05 | 2023-08-15 | 中国联合网络通信集团有限公司 | Bandwidth frequency self-adaptive adjustment method and device |
| CN112769611B (en) * | 2020-12-30 | 2023-10-27 | 凌云天博光电科技股份有限公司 | Method and system for configuring working frequency band of home network |
| CN115866608B (en) * | 2023-03-01 | 2023-05-16 | 广东南方电信规划咨询设计院有限公司 | Communication security management method and device based on signal strength and wireless communication system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2381158B (en) * | 2001-10-16 | 2005-07-20 | Vodafone Ltd | Wireless telecommunications systems and methods |
| CN101053267A (en) * | 2004-11-18 | 2007-10-10 | 三菱电机株式会社 | Mobile radio base station radio channel setting method |
| WO2008008452A2 (en) * | 2006-07-13 | 2008-01-17 | Lucent Technologies Inc. | Method and apparatus for automated configuration of a base station router device |
-
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| GB2381158B (en) * | 2001-10-16 | 2005-07-20 | Vodafone Ltd | Wireless telecommunications systems and methods |
| CN101053267A (en) * | 2004-11-18 | 2007-10-10 | 三菱电机株式会社 | Mobile radio base station radio channel setting method |
| WO2008008452A2 (en) * | 2006-07-13 | 2008-01-17 | Lucent Technologies Inc. | Method and apparatus for automated configuration of a base station router device |
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