CN110312218A - A kind of method for reconfiguration and device of user's residence sub-band - Google Patents
A kind of method for reconfiguration and device of user's residence sub-band Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
- H04W36/0085—Hand-off measurements
- H04W36/0094—Definition of hand-off measurement parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
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Abstract
This application discloses the method for reconfiguration and device of a kind of user's residence sub-band, the wherein physical data control channel PDCCH number of repetition of method every kind of covering grade that include: base station carry according to broadcast message determines the corresponding channel property parameter value range of every kind of covering grade；The channel property parameter is Signal to Noise Ratio (SNR) or Signal to Interference plus Noise Ratio SINR；After the residence sub-band initial configuration for completing user, the base station is according to the actual channel situation of the user and the corresponding channel property parameter value range of every kind of covering grade, the principle to match according to the covering grade of actual channel situation and residence sub-band, it determines the need for reconfiguring residence sub-band for the user, if it is required, then triggering is the residence sub-band that the user reconfigures the covering grade to match with the actual channel situation of the user.Using the present invention, it is possible to prevente effectively from the problem of user resources RQ cycle is long or resource request fails.
Description
Technical field
The present invention relates to mobile communication technologies, more particularly to a kind of weight of user's residence sub-band in multi-subband communication system
Choosing method.
Background technique
The authorization frequency point of multi-subband communication system is discrete to be distributed in the frequency range of 223.525MHz~231.65MHz, each
Bandwidth 25KHz, referred to as physics subband.Wherein, independent division part-frequency point is as resident area, remaining frequency point as workspace,
Resident area's subband is further divided into synchronous subband, broadcasting sub-band and service sub-band.When ascending pilot frequency in each service sub-band
The position gap physical channel (UpPTS) is assigned to the position of resource request (SR).
Currently, the service sub-band in resident area is divided into different coverings according to the coverage condition of user by multi-subband communication system
Grade, the repetition transmission times of SR is different in the service sub-band of different covering grades.In this way, passing through so that being configured by user
The covering grade and subscriber channel situation of service sub-band match, it can be ensured that system performance.Specifically: good for channel conditions
User to configure the service sub-band that covers resident, it is less that used SR repeats transmission times, and shorter SR can be used
Period；Conversely, the service sub-band that the user of channel conditions difference can configure covering difference is resident, used SR repeats 0 transmission times
It is more, it can be ensured that the communication quality of user.For this purpose, base station will be according to user's in existing system when user is initially accessed
Channel conditions are assigned the user in the service sub-band of different covering grades and are resident.
However, in practical applications, inventors discovered through research that using the allocation plan of above-mentioned service sub-band, it can not be true
The covering grade and subscriber channel situation for protecting the service sub-band for user configuration really match, for example, when user is initially accessed,
If since the resource quantity of request access is inadequate, and the access-in resource that while being successfully accessed user finally uses is become
Change, at this time, it would be possible to cause the covering grade for the service sub-band distributed for user and actual subscriber channel situation to mismatch,
Alternatively, after user is successfully accessed, due to the variation of subscriber channel situation, and the covering for the service sub-band that user is resident
Grade and subscriber channel situation do not match that.In this way, the transmission performance of system will be seriously affected, specifically, subscriber channel
Situation is good to be resident in the service sub-band of covering difference, and will lead to used SR, to repeat transmission times more, has exceeded reality
Transmission needs, correspondingly, the resource request period used will be elongated；, whereas if subscriber channel situation difference is covering
Service sub-band on be resident, will lead to used SR, to repeat transmission times less, transmission quality is unable to ensure, to will lead to
Resource request failure.
It can be seen that user's residence sub-band configuration method of existing multi-subband communication system, can have the resource request period
The problem of long or resource request fails.
Summary of the invention
In view of this, the main purpose of the present invention is to provide the method for reconfiguration and device of a kind of user's residence sub-band,
It is possible to prevente effectively from the problem of resource request period is long or resource request fails.
In order to achieve the above object, technical solution proposed by the present invention are as follows:
A kind of method for reconfiguration of user's residence sub-band, comprising:
The physical data control channel PDCCH number of repetition for every kind of covering grade that base station is carried according to broadcast message, really
The corresponding channel property parameter value range of fixed every kind of covering grade；The channel property parameter is Signal to Noise Ratio (SNR) or letter
Dry make an uproar compares SINR；
Complete user residence sub-band initial configuration after, the base station according to the actual channel situation of the user with
And the corresponding channel property parameter value range of every kind of covering grade, according to the covering of actual channel situation and residence sub-band
The principle that grade matches, it is determined whether need to reconfigure residence sub-band for the user, if it is desired, then triggering is described
User reconfigures the residence sub-band of the covering grade to match with the actual channel situation of the user.
Preferably, the corresponding channel property parameter value range of every kind of the determination covering grade includes:
The base station obtains the PDCCH number of repetition of different covering grades from the broadcast message；
The PDCCH number of repetition specified for every kind, according to preset PDCCH number of repetition and channel property parameter thresholding
Mapping relations, determine the corresponding channel property parameter thresholding of the PDCCH number of repetition；The specified PDCCH number of repetition
Include: it is described broadcast message carry the PDCCH number of repetition in addition to the worst PDCCH number of repetition of covering grade
Other PDCCH numbers of repetition；
Using all channel property parameter thresholdings as boundary point, according to the number of species of the covering grade, phase is divided
With the channel property parameter value range of quantity, and the original bigger according to the more good corresponding channel property parameter value of covering grade
Then, obtained channel property parameter value range and the covering grade are corresponded, obtains every kind of covering grade
Corresponding channel property parameter value range.
Preferably, it is described determine the need for reconfiguring residence sub-band for the user include:
In each preset measurement period, the channel performance of the residence sub-band of the user obtained in this period is joined
Numerical value determines the corresponding channel property parameter value range of each channel property parameter value, and determined by detection
Whether corresponding with the residence sub-band of the user the corresponding covering grade of channel property parameter value range covering grade be consistent,
When testing result is that inconsistent quantity reaches preset threshold value, judgement needs to reconfigure residence sub-band for the user.
Preferably, the channel property parameter value of the residence sub-band of the user is the SNR or SINR of the reporting of user, or
Person is the uplink SNR or SINR of base station estimation.
Preferably, the triggering is that the user reconfigures the covering to match with the actual channel situation of the user
The residence sub-band of grade includes:
The base station determines that channel performance belonging to the inconsistent corresponding channel property parameter value in this period is joined
Number value range is selected and is somebody's turn to do for the user according to the corresponding covering grade of identified channel property parameter value range
The residence sub-band and resource request SR number of repetition that covering grade matches, and utilize radio resource control RRC connection reconfiguration
The selected result is allocated to the user by process.
A kind of reconfiguration device of user's residence sub-band is set in base station, comprising:
Map unit, the physical data control channel PDCCH weight of every kind of covering grade for being carried according to broadcast message
Again it counts, determines the corresponding channel property parameter value range of every kind of covering grade；The channel property parameter is noise
Than SNR or Signal to Interference plus Noise Ratio SINR；
Dynamic configuration unit, for complete user residence sub-band initial configuration after, according to the reality of the user
Channel conditions and the corresponding channel property parameter value range of every kind of covering grade, according to actual channel situation and resident
The principle that the covering grade of subband matches, it is determined whether need to reconfigure residence sub-band for the user, if it is desired, then
Triggering is the residence sub-band that the user reconfigures the covering grade to match with the actual channel situation of the user.
Preferably, the map unit, for obtaining the PDCCH number of repetition of different covering grades from broadcast message；
The PDCCH number of repetition specified for every kind is closed according to the mapping of preset PDCCH number of repetition and channel property parameter thresholding
System, determines the corresponding channel property parameter thresholding of the PDCCH number of repetition；The specified PDCCH number of repetition includes: described
Other PDCCH in the PDCCH number of repetition carried that broadcasts the message in addition to the worst PDCCH number of repetition of covering grade
Number of repetition；Using all channel property parameter thresholdings as boundary point, according to the number of species of the covering grade, phase is divided
With the channel property parameter value range of quantity, and the original bigger according to the more good corresponding channel property parameter value of covering grade
Then, obtained channel property parameter value range and the covering grade are corresponded, obtains every kind of covering grade
Corresponding channel property parameter value range.
Preferably, the dynamic configuration unit, is used in each preset measurement period, for the institute obtained in this period
The channel property parameter value for stating the residence sub-band of user determines the corresponding channel performance of each channel property parameter value
Parameter value range, and whether the corresponding covering grade of identified channel property parameter value range is detected with the user's
The corresponding covering grade of residence sub-band is consistent, when testing result is that inconsistent quantity reaches preset threshold value, determines to need
Residence sub-band is reconfigured for the user.
Preferably, the channel property parameter value of the residence sub-band of the user is the SNR or SINR of the reporting of user, or
Person is the uplink SNR or SINR of base station estimation.
Preferably, the dynamic configuration unit, for determining described different in this period in each measurement period
Channel property parameter value range belonging to corresponding channel property parameter value is caused, according to identified channel property parameter value
The corresponding covering grade of range, the residence sub-band and resource request SR to match for user selection with the covering grade repeat
Number, and the selected result is allocated to the user using radio resource control RRC connection reconfiguration process.
In conclusion the method for reconfiguration and device of user's residence sub-band proposed by the present invention, by base station from broadcast message
Then the middle PDCCH number of repetition for obtaining the different covering grades that respective cell uses repeats secondary further according to acquired PDCCH
Number, determines channel property parameter value range corresponding to every kind of covering grade involved by broadcast message, in this way, completing
It, can be according to above-mentioned corresponding relationship, to the actual channel shape of the residence sub-band of user after the residence sub-band initial configuration of user
Whether condition matches carry out real-time monitoring with covering grade corresponding to the residence sub-band, and according to monitoring result, utilizes resident son
Band reconfigures, it is ensured that the covering grade of the residence sub-band of user and the actual channel situation of its residence sub-band match, therefore
The present invention is it is possible to prevente effectively from the problems such as resource request period caused by being mismatched the two is long or resource request fails.
Detailed description of the invention
Fig. 1 is the method flow schematic diagram of the embodiment of the present invention；
Fig. 2 is the flow diagram of the implementation example of step 101 in Fig. 1
Fig. 3 is the apparatus structure schematic diagram of the embodiment of the present invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, right below in conjunction with the accompanying drawings and the specific embodiments
The present invention is described in further detail.
Core of the invention thought is: introducing user's residence sub-band and reconfigures mechanism, i.e., after subscriber access system, by base
Stand the channel conditions current according to user, monitor the residence sub-band of user covering grade whether the actual channel situation with user
Matching, if it does not match, the residence sub-band that user is dispatched to covering grade corresponding with actual channel situation by triggering is enterprising
Row is resident.
Fig. 1 is the method for reconfiguration flow diagram of user's residence sub-band provided in an embodiment of the present invention, as shown in Figure 1,
The method for reconfiguration specifically includes that
The physical data control channel PDCCH for every kind of covering grade that step 101, base station are carried according to broadcast message is repeated
Number determines the corresponding channel property parameter value range of every kind of covering grade；The channel property parameter is signal-to-noise ratio
SNR or Signal to Interference plus Noise Ratio SINR.
In order to be monitored to the residence sub-band of user after the residence sub-band initial configuration for completing user, with
The actual channel situation of the corresponding covering grade of residence sub-band and user that are ensured to be user configuration matches, in this step,
Base station needs to know from the broadcast message of cell that system is the PDCCH repetition time which covering grade respective cell is configured with
Number, and determine the corresponding channel property parameter value range of these covering grades (i.e. SNR value range or SINR value model
It encloses).In this way, base station can be monitored based on the implementing result of this step after the residence sub-band initial configuration for completing user
Channel property parameter value range corresponding to the actual channel quality of user's residence sub-band, if the current resident son with user
Match with corresponding coverage area, if it does not match, being matched by being again user configuration with its actual channel quality
Residence sub-band, to ensure to avoid resource request period length caused by mismatching the two or resource request unsuccessfully etc. to ask
Topic.
Preferably, as shown in Fig. 2, the corresponding letter of every kind of covering grade can be determined in this step using following methods
Road performance parameter value range:
Step 1011, the base station obtain the PDCCH number of repetition of different covering grades from the broadcast message.
In practical applications, the PDCCH that each covering grade used in cell will be carried in system broadcast message is repeated
Number, therefore, base station only needs monitoring system to broadcast the message you can learn that above-mentioned PDCCH number of repetition here,
Step 1012, the PDCCH number of repetition specified for every kind, according to preset PDCCH number of repetition and channel
The mapping relations of energy Parameters threshold, determine the corresponding channel property parameter thresholding of the PDCCH number of repetition；It is described specified
PDCCH number of repetition includes: PDCCH worst except covering grade in the PDCCH number of repetition of the broadcast message carrying
Other PDCCH numbers of repetition except number of repetition.
This step, for determine obtained from the broadcast message except the worst PDCCH number of repetition of covering grade it
Channel property parameter thresholding corresponding to other outer each PDCCH numbers of repetition.In this way, the quantity of channel property parameter thresholding with
The covering grade quantity difference one obtained from the broadcast message, so as to mark off and cover according to these thresholdings
The channel property parameter value range of the identical quantity of grade, so that covering grade can be with channel property parameter value range
It corresponds.For example, channel property parameter threshold number is 2 when covering grade acquired from broadcast message is 3.
In practical applications, the PDCCH number of repetition and the mapping relations of channel property parameter thresholding can be by this fields
Technical staff is configured according to actual needs.For example, can be using the mapping relations in following table 1.
Table 1
It should be noted that above table 1 is only a preferably specific example, it is not limited to this in practical applications, only
It is necessary to ensure that above-mentioned mapping relations are able to satisfy actual transmission performance requirement.
Step 1013, using all channel property parameter thresholdings as boundary point, according to the species number of the covering grade
Amount, divides the channel property parameter value range of identical quantity, and according to the more good corresponding channel property parameter value of covering grade
Obtained channel property parameter value range and the covering grade are corresponded, are obtained described in every kind by bigger principle
The corresponding channel property parameter value range of covering grade.
For example, channel property parameter threshold number is 2: SNR1 and SNR2, SNR1 is equal to the best PDCCH of covering grade
The corresponding demodulation threshold of number of repetition, when SNR2 is equal to the PDCCH number of repetition taken second place of covering grade corresponding demodulation threshold,
The relationship of SNR value range and 3 covering grades can be as shown in table 2 below:
| SNR threshold range | |
| Covering grade 1 | SNR1≤SNR |
| Covering grade 2 | SNR2≤SNR < SNR1 |
| Covering grade 3 | SNR < SNR2 |
Table 2
Step 102, after the residence sub-band initial configuration for completing user, the base station is according to the practical letter of the user
Road situation and the corresponding channel property parameter value range of every kind of covering grade, according to actual channel situation and resident son
The principle that the covering grade of band matches, it is determined whether need to reconfigure residence sub-band for the user, if it is desired, then touch
Hair is the residence sub-band that the user reconfigures the covering grade to match with the actual channel situation of the user.
In this step, by based on the corresponding channel property parameter value range of every kind of covering grade obtained in step 101,
Monitoring: channel property parameter value range corresponding to the actual channel quality of user's residence sub-band, if current with user
The corresponding coverage area of residence sub-band matches, if it does not match, triggering residence sub-band reconfigures, with ensure to avoid due to
The two mismatches caused problem.
Resident son is reconfigured preferably, following methods can be used to determine the need in this step for the user
Band:
In each preset measurement period, the channel performance of the residence sub-band of the user obtained in this period is joined
Numerical value determines the corresponding channel property parameter value range of each channel property parameter value, and determined by detection
Whether corresponding with the residence sub-band of the user the corresponding covering grade of channel property parameter value range covering grade be consistent,
When testing result is that inconsistent quantity reaches preset threshold value, judgement needs to reconfigure residence sub-band for the user.
In the above method, the measurement period can be specifically configured according to actual needs by those skilled in the art,
This is repeated no more.
Preferably, the channel property parameter value of the residence sub-band of the user can be the SNR or SINR of reporting of user,
It can be the uplink SNR or SINR of the user estimated by base station.
Preferably, following methods triggering can be used to reconfigure the actual channel situation with the user for the user
The residence sub-band of the covering grade to match:
The base station determines that channel performance belonging to the inconsistent corresponding channel property parameter value in this period is joined
Number value range is selected and is somebody's turn to do for the user according to the corresponding covering grade of identified channel property parameter value range
The residence sub-band and resource request SR number of repetition that covering grade matches, and utilize radio resource control RRC connection reconfiguration
The selected result is allocated to the user by process, and user is dispatched to corresponding covering grade residence sub-band and is stayed
It stays.
Can be seen that through the above scheme, using above-described embodiment may insure the residence sub-band of user covering grade and its
The actual channel situation of residence sub-band matches, so as to effectively avoid the resource request week caused by mismatching the two
The problems such as phase is long or resource request fails.And can be compatible with the residence sub-band selection mechanism of current system, have good
System compatibility.
Such as: the PDCCH number of repetition of three covering grades is respectively Nrep1, Nrep4 and Nrep8；Corresponding SR is repeated
Number is respectively Nrep1, Nrep2 and Nrep4；Then corresponding to SNR thresholding SNR1 and SNR2 is respectively 5dB, 0dB.If reported
SNR is 3dB, between 5 and 0dB, then selects covering grade 2, corresponding SR number of repetition, that is, Nrep2；If the SNR reported is
5dB then selects covering grade 1, corresponding SR number of repetition, that is, Nrep1；If the SNR reported is -3dB, covering etc. is selected
Grade 3, corresponding SR number of repetition, that is, Nrep4.
Fig. 3 is reconfiguration device structural schematic diagram corresponding with the method for reconfiguration of above-mentioned user's residence sub-band.In reality
In, the reconfiguration device of user's residence sub-band is set in base station, as shown in figure 3, the device mainly includes:
301, map unit, the physical data control channel of every kind of covering grade for being carried according to broadcast message
PDCCH number of repetition determines the corresponding channel property parameter value range of every kind of covering grade；The channel property parameter
For Signal to Noise Ratio (SNR) or Signal to Interference plus Noise Ratio SINR.
302, dynamic configuration unit, for complete user residence sub-band initial configuration after, according to the user's
Actual channel situation and the corresponding channel property parameter value range of every kind of covering grade, according to actual channel situation with
The principle that the covering grade of residence sub-band matches, it is determined whether need to reconfigure residence sub-band for the user, if needed
It wants, then triggering is the resident son that the user reconfigures the covering grade to match with the actual channel situation of the user
Band.
Preferably, the map unit, for obtaining the PDCCH number of repetition of different covering grades from broadcast message；
The PDCCH number of repetition specified for every kind, according to reflecting for preset PDCCH number of repetition and the channel property parameter thresholding
Relationship is penetrated, determines the corresponding channel property parameter thresholding of the PDCCH number of repetition；The specified PDCCH number of repetition includes:
Other in addition to the worst PDCCH number of repetition of covering grade in the PDCCH number of repetition that the broadcast message carries
PDCCH number of repetition；Using all channel property parameter thresholdings as boundary point, according to the number of species of the covering grade,
The channel property parameter value range of identical quantity is divided, and bigger according to the more good corresponding channel property parameter value of covering grade
Principle, obtained channel property parameter value range and the covering grade are corresponded, every kind of covering is obtained
The corresponding channel property parameter value range of grade.
Preferably, the dynamic configuration unit, is used in each preset measurement period, for the institute obtained in this period
The channel property parameter value for stating the residence sub-band of user determines the corresponding channel performance of each channel property parameter value
Parameter value range, and whether the corresponding covering grade of identified channel property parameter value range is detected with the user's
The corresponding covering grade of residence sub-band is consistent, when testing result is that inconsistent quantity reaches preset threshold value, determines to need
Residence sub-band is reconfigured for the user.
Preferably, the channel property parameter value of the residence sub-band of the user is the SNR or SINR of the reporting of user, or
Person is the uplink SNR or SINR of base station estimation.
Preferably, the dynamic configuration unit, for determining described different in this period in each measurement period
Channel property parameter value range belonging to corresponding channel property parameter value is caused, according to identified channel property parameter value
The corresponding covering grade of range, the residence sub-band and resource request SR to match for user selection with the covering grade repeat
Number, and the selected result is allocated to the user using radio resource control RRC connection reconfiguration process.
In conclusion the above is merely preferred embodiments of the present invention, being not intended to limit the scope of the present invention.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (10)
1. a kind of method for reconfiguration of user's residence sub-band characterized by comprising
The physical data control channel PDCCH number of repetition for every kind of covering grade that base station is carried according to broadcast message determines every
The corresponding channel property parameter value range of the kind covering grade；The channel property parameter is Signal to Noise Ratio (SNR) or believes dry make an uproar
Compare SINR；
After the residence sub-band initial configuration for completing user, the base station is according to the actual channel situation of the user and every
The corresponding channel property parameter value range of the kind covering grade, according to the covering grade of actual channel situation and residence sub-band
The principle to match, it is determined whether need to reconfigure residence sub-band for the user, if it is desired, then triggering is the user
Reconfigure the residence sub-band of the covering grade to match with the actual channel situation of the user.
2. the method according to claim 1, wherein the corresponding channel of every kind of the determination covering grade
Can parameter value range include:
The base station obtains the PDCCH number of repetition of different covering grades from the broadcast message；
The PDCCH number of repetition specified for every kind, according to reflecting for preset PDCCH number of repetition and channel property parameter thresholding
Relationship is penetrated, determines the corresponding channel property parameter thresholding of the PDCCH number of repetition；The specified PDCCH number of repetition includes:
Other in addition to the worst PDCCH number of repetition of covering grade in the PDCCH number of repetition that the broadcast message carries
PDCCH number of repetition；
Using all channel property parameter thresholdings as boundary point, according to the number of species of the covering grade, identical number is divided
The channel property parameter value range of amount, and the principle bigger according to the more good corresponding channel property parameter value of covering grade, will
Obtained channel property parameter value range and the covering grade correspond, and it is corresponding to obtain every kind of covering grade
Channel property parameter value range.
3. the method according to claim 1, wherein it is described determine the need for reconfiguring for the user stay
The subband is stayed to include:
In each preset measurement period, for the channel property parameter of the residence sub-band of the user obtained in this period
Value determines the corresponding channel property parameter value range of each channel property parameter value, and detects identified letter
Whether corresponding with the residence sub-band of the user the corresponding covering grade of road performance parameter value range covering grade be consistent, when
When testing result is that inconsistent quantity reaches preset threshold value, judgement needs to reconfigure residence sub-band for the user.
4. according to the method described in claim 3, it is characterized in that, the channel property parameter value of the residence sub-band of the user is
The SNR or SINR of the reporting of user, or uplink SNR or SINR for base station estimation.
5. according to the method described in claim 3, it is characterized in that, the triggering is that the user reconfigures and the user
The residence sub-band of covering grade that matches of actual channel situation include:
The base station determines that channel property parameter belonging to the inconsistent corresponding channel property parameter value in this period takes
It is worth range, according to the corresponding covering grade of identified channel property parameter value range, for user selection and the covering
The residence sub-band and resource request SR number of repetition that grade matches, and utilize radio resource control RRC connection reconfiguration process
The selected result is allocated to the user.
6. a kind of reconfiguration device of user's residence sub-band is set in base station characterized by comprising
Map unit, the physical data control channel PDCCH of every kind of covering grade for being carried according to broadcast message repeat secondary
Number determines the corresponding channel property parameter value range of every kind of covering grade；The channel property parameter is Signal to Noise Ratio (SNR)
Or Signal to Interference plus Noise Ratio SINR；
Dynamic configuration unit, for complete user residence sub-band initial configuration after, according to the actual channel of the user
Situation and the corresponding channel property parameter value range of every kind of covering grade, according to actual channel situation and residence sub-band
The principle that matches of covering grade, it is determined whether need to reconfigure residence sub-band for the user, if it is desired, then trigger
The residence sub-band of the covering grade to match with the actual channel situation of the user is reconfigured for the user.
7. device according to claim 6, which is characterized in that the map unit, for being obtained not from broadcast message
With the PDCCH number of repetition of covering grade；The PDCCH number of repetition specified for every kind, according to preset PDCCH number of repetition
With the mapping relations of channel property parameter thresholding, the corresponding channel property parameter thresholding of the PDCCH number of repetition is determined；The finger
Fixed PDCCH number of repetition includes: in the PDCCH number of repetition of the broadcast message carrying except covering grade is worst
Other PDCCH numbers of repetition except PDCCH number of repetition；Using all channel property parameter thresholdings as boundary point, according to
The number of species of the covering grade divide the channel property parameter value range of identical quantity, and better according to covering grade
The bigger principle of corresponding channel property parameter value, by obtained channel property parameter value range and the covering grade one
One is corresponding, obtains the corresponding channel property parameter value range of every kind of covering grade.
8. device according to claim 6, which is characterized in that the dynamic configuration unit, in each preset system
The meter period determines each channel for the channel property parameter value of the residence sub-band of the user obtained in this period
The corresponding channel property parameter value range of performance parameter value, and detect identified channel property parameter value range pair
Whether corresponding with the residence sub-band of the user covering grade answered covering grade be consistent, when testing result is inconsistent number
When amount reaches preset threshold value, judgement needs to reconfigure residence sub-band for the user.
9. device according to claim 8, which is characterized in that the channel property parameter value of the residence sub-band of the user is
The SNR or SINR of the reporting of user, or uplink SNR or SINR for base station estimation.
10. device according to claim 8, which is characterized in that the dynamic configuration unit, in each statistics
Period determines channel property parameter value range belonging to the inconsistent corresponding channel property parameter value in this period,
According to the corresponding covering grade of identified channel property parameter value range, for user selection and the covering grade phase
The residence sub-band and resource request SR number of repetition matched, and utilize radio resource control RRC connection reconfiguration process by the choosing
The result selected is allocated to the user.
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