CN102316482B - Dynamic carrier management method - Google Patents
Dynamic carrier management method Download PDFInfo
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- CN102316482B CN102316482B CN2010102282521A CN201010228252A CN102316482B CN 102316482 B CN102316482 B CN 102316482B CN 2010102282521 A CN2010102282521 A CN 2010102282521A CN 201010228252 A CN201010228252 A CN 201010228252A CN 102316482 B CN102316482 B CN 102316482B
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- carrier wave
- interference
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Abstract
The invention provides a dynamic carrier management method, which comprises the following steps of: for any cell managed by a radio network controller (RNC), correspondingly storing NPriNb, NSecNb and NPotentialNb for each carrier i of the cell by using the RNC, wherein NPriNb is the number of primary carriers at the same frequency with the carrier i in all neighbor cells of the cell, NSecNb is the number of established secondary carriers at the same frequency with the carrier i in all the neighbor cells of the cell, and NPotentialNb is the number of unestablished secondary carriers at the same frequency with the carrier i in all the neighbor cells of the cell; and in the addition and deletion of the carriers of the cell, calculating the interference of corresponding carriers in a network according to the NPriNb, the NSecNb and the NPotentialNb, selecting a carrier with the lowest interference for addition, and selecting a carrier with the highest interference for deletion, thereby minimizing the interference in the neighbor cells in the addition and deletion of the carriers.
Description
Technical field
The present invention relates to mobile communication technology, particularly a kind of dynamic carrier management method.
Background technology
In the TD-SCDMA system, in order to improve the network system capacity, each residential quarter can configure a plurality of carrier waves.When cell initial is set up, whole carrier waves of configuration all can be set up, or, also can when setting up, only set up cell initial main carrier, when reaching thresholding, cell business volume increases gradually the auxiliary carrier wave of residential quarter.This method according to traffic carrying capacity dynamic appending carrier wave, can be under the prerequisite that guarantees the network system capacity, and for equipment is saved electric resources, carrier wave utilance in the raising system, can reduce the interference in mobile communication system simultaneously.
After wireless network cell is set up, the mode that radio network controller (RNC) is put by cell re-configuration, notice NodeB increases/deletes the carrier wave of certain specific cell of carrier wave.RNC is in the network operation process, and RNC can monitor the telephone traffic of residential quarter automatically.When cellular traffic surpassed thresholding, RNC sent cell re-configuration and puts message, increased cell carrier; During lower than thresholding, RNC sends cell re-configuration and puts message when cellular traffic, the carrier wave of deletion residential quarter.After NodeB receives that cell re-configuration is put message, more new resources, will upgrade result and send to RNC, and the cell re-configuration that RNC replys according to NodeB is put result and upgraded relevant resource record.
But, in above-mentioned method of carrying out the dynamic carrier management, consider to add the co-channel interference of deletion carrier wave to adjacent area.The frequency of the new carrier wave that adds may be identical with dominant frequency or the auxiliary frequency of a plurality of adjacent areas, and therefore, the user who adds on this carrier wave may disturb a plurality of residential quarters existence on every side, also can be disturbed by peripheral cell simultaneously.During the carrier frequency deletion, do not consider in network, to disturb maximum carrier wave deletion, therefore, can't utilize the deletion carrier terminal equipment can reduce most possibly network common frequency and disturb.And, during the cell carrier frequencies deletion, do not consider on deleted carrier wave whether to exist the user.
Summary of the invention
The invention provides a kind of dynamic carrier management method, can reduce that carrier wave increases and deletion in for the interference of adjacent cell.
For achieving the above object, the present invention adopts following technical scheme:
A kind of dynamic carrier management method comprises:
For arbitrary residential quarter of RNC jurisdiction, described RNC is the corresponding N of preservation of each carrier wave i of this residential quarter
PriNb, N
SecNbAnd N
PotentialNbWherein, N
PriNbFor in all adjacent areas of described arbitrary residential quarter, with carrier wave i, being the main carrier number with frequently, N
SecNbFor in all adjacent areas of described arbitrary residential quarter, with carrier wave i, being with frequently and the auxiliary carrier number of having set up, N
PotentialNbFor in all adjacent areas of described arbitrary residential quarter, with carrier wave i, being with unfounded auxiliary carrier number frequently and still;
When needs added carrier wave in described arbitrary residential quarter, RNC was according to the N that has been configured each carrier wave of not yet setting up in this residential quarter
PriNb, N
SecNbAnd N
PotentialNbCalculate the interference I of corresponding carriers to network, select the carrier wave of the interference minimum of network is added, and upgrade in all adjacent areas of described arbitrary residential quarter and the N of the carrier wave that adds with carrier wave frequently
PriNb, N
SecNbAnd N
PotentialNb
When needs were deleted carrier wave in described arbitrary residential quarter, RNC had set up and has allowed the N of each carrier wave of deletion according to this residential quarter
PriNb, N
SecNbAnd N
PotentialNbCalculate the interference I of corresponding carriers to network, select the carrier wave deletion to the interference maximum of network, and upgrade in all adjacent areas of described arbitrary residential quarter and the carrier wave of the deletion N with carrier wave frequently
PriNb, N
SecNbAnd N
PotentialNb.
Preferably, when the described arbitrary residential quarter of UE access, the method further comprises:
N according to each carrier wave of having set up in this residential quarter
PriNb, N
SecNbAnd N
PotentialNbCalculate the interference I of corresponding carriers to network, the preferential selection accessed the little carrier wave of the interference of network.
Preferably, according to the N of carrier wave
PriNb, N
SecNbAnd N
PotentialNbCalculating this carrier wave to the mode of the interference I of network is: I=α * N
PriNb+ β * N
SecNb+ γ * N
PotentialNbWherein, α>β>γ, α, β, γ is for default weights, be used to representing the influence degree of three kinds of dissimilar interference for network, described three kinds of dissimilar interference be respectively carrier wave i to the interference of all adjacent area main carriers and, carrier wave i to the interference of all auxiliary carrier waves in adjacent area and, carrier wave i to the potential interference of all adjacent areas and.
Preferably, after calculation plot has been set up and has been allowed the interference I of each carrier wave to network of deletion, select the carrier wave deletion to the interference maximum of network before, the method further comprises:
On the carrier wave of judgement to the interference maximum of network, whether there is the user, if do not exist, delete this carrier wave; If exist, the user on this carrier wave is moved on other carrier waves, this carrier wave of deletion after moving successfully, if move unsuccessful, according to network interferences order is from high to low selected to carrier wave successively, repeat above-mentioned steps, until on corresponding carriers, do not exist user or user to move, successfully do not delete afterwards corresponding carriers.
As seen from the above technical solution, in the present invention, RNC is the corresponding N of preservation of each carrier wave of residential quarter
PriNb, N
SecNbAnd N
PotentialNbThereby, when cell carrier adds and delete, at first according to N
PriNb, N
SecNbAnd N
PotentialNbCalculate the interference of corresponding carriers to network, and select to disturb minimum carrier wave interpolation, select to disturb maximum carrier wave deletion, thereby guarantee can make the minimum interference to adjacent area when carrier wave interpolation and deletion.
The accompanying drawing explanation
Fig. 1 is the idiographic flow schematic diagram that carries out the carrier wave interpolation in the present invention;
Fig. 2 is the idiographic flow schematic diagram that carries out the carrier wave deletion in the present invention.
Embodiment
For making purpose of the present invention, technological means and advantage clearer, below in conjunction with accompanying drawing, the present invention is described in further details.
Network, when initial plan, can be planned to alien frequencies by the main carrier of each residential quarter, but can't avoid main carrier or the same frequency of auxiliary carrier wave of the auxiliary carrier wave in residential quarter and adjacent area.Therefore, carrier wave of the every increase in residential quarter, the user who accesses this carrier wave likely brings co-channel interference to adjacent area, and if when the main carrier of the carrier wave that increases and adjacent area occurs with frequency, to the interference maximum of adjacent area.
Based on this, basic thought of the present invention is: when cell carrier changes, and the interference size that the carrier wave that calculate to increase or reduce may bring adjacent area, thus select to disturb minimum carrier wave to increase, select to disturb maximum carrier wave to delete.
In the present invention, RNC safeguards N for each carrier wave of each cell configuration in advance
PriNb, N
SecNbAnd N
PotentialNb, three values calculate initial value when cell initial is set up, and afterwards, three values will dynamically be adjusted according to increase and the minimizing of adjacent area carrier wave.
Think the N of the carrier wave i maintenance of certain cell configuration
PriNb, N
SecNbAnd N
PotentialNbThe N that illustrates for example
PriNb, N
SecNbAnd N
PotentialNbImplication, N
PriNbFor in all adjacent areas of certain residential quarter, with carrier wave i, being the main carrier number with frequently, N
SecNbFor in all adjacent areas of certain residential quarter, with carrier wave i, being with frequently and the auxiliary carrier number of having set up, N
PotentialNbFor in all adjacent areas of certain residential quarter, with carrier wave i, being with unfounded auxiliary carrier number frequently and still.
In the present invention, according to above-mentioned three values, can calculate the interference I of corresponding carriers to network.Concrete account form is:
I＝I
Pri+I
Sec+I
potential
I
Pri＝α×N
PriNb
I
sec＝β×N
SecNb
I
potential＝γ×N
PotentialNb
Wherein, I
PriFor carrier wave i to the interference of all adjacent area main carriers and, I
SecFor carrier wave i to the interference of all auxiliary carrier waves in adjacent area and, I
PotentialFor carrier wave i to the potential interference of all adjacent areas and (certain neighbor cell configuration identical carrier wave, but this carrier wave is not yet set up).α, beta, gamma: three kinds of dissimilar interference I of 3 Parametric Representations
Pri, I
SecAnd I
PotentialRespectively to the influence degree of network, α, beta, gamma can dynamic-configuration, and because the interference of main carrier frequency is disturbed greater than assistant carrier frequency, the carrier frequency of having set up disturbs greater than potential carrier frequency and disturbs, so α>β>γ.α, the concrete value of beta, gamma can be determined by emulation mode, and can further in the network operation process, dynamically adjust.
As mentioned above, in the present invention, RNC is the corresponding N of preservation of each carrier wave of the configuration of each residential quarter
PriNb, N
SecNbAnd N
PotentialNb, when carrying out carrier wave increase or deletion, utilize aforesaid way to carry out the interference calculation of carrier wave to network, and then select carrier wave increase or delete according to result of calculation.Below introduce respectively the idiographic flow while specifically carrying out carrier wave increase and deletion.
Fig. 1 carries out the particular flow sheet of carrier wave increase in the present invention.With RNC, the example that is treated to of certain residential quarter is described, as shown in Figure 1, the method comprises:
Wherein, carry out carrier wave interpolation whether judgment mode and can adopt existing mode to realize, for example, when cellular traffic surpassed certain limit, the carrier wave interpolation was carried out in judgement.
In this step, at first RNC determines in this residential quarter to be configured but unfounded each carrier wave still, need in these carrier waves, select carrier wave to add.For these carrier waves, when the interference of calculating network, determine the current N of each carrier wave
PriNb, N
SecNbAnd N
PotentialNb, as previously mentioned, RNC has preserved analog value for each carrier wave correspondence, only the value that RNC preserves need to be taken out here, utilizes its computing network interference value I.Concrete account form as previously mentioned, just repeats no more here.
When the selection of adding carrier wave, select the carrier wave of interference value minimum, thereby, in carrier wave increase process, reduce the interference for adjacent area as far as possible.
The renewal of carrying out the local resource state in this step is processed with to have processing mode now identical.
Owing in this residential quarter, newly having set up carrier wave, so this carrier wave also can change for the interference of other adjacent areas, recalculates in adjacent area with the carrier wave that adds with the N of carrier wave frequently
PriNb, N
SecNbAnd N
PotentialNb.
So far, the carrier wave adding method flow process in the present invention finishes.
By the way, when carrying out the carrier wave interpolation, can select the carrier wave of network interferences minimum is added, thereby reduce carrier wave as far as possible, add the interference for adjacent area.
Next, introduce the concrete grammar handling process of carrier wave deletion.Fig. 2 carries out the particular flow sheet of carrier wave deletion in the present invention.With RNC, the example that is treated to of certain residential quarter is described, as shown in Figure 2, the method comprises:
Wherein, carry out carrier wave deletion whether judgment mode and can adopt existing mode to realize, for example, during lower than certain limit, the carrier wave deletion is carried out in judgement at cellular traffic.
In this step, at first RNC determines to have set up and allowed in this residential quarter each carrier wave of deletion, need in these carrier waves, select carrier wave to delete.For these carrier waves, when the interference of calculating network, determine the current N of each carrier wave
PriNb, N
SecNbAnd N
PotentialNb, as previously mentioned, RNC has preserved analog value for each carrier wave correspondence, only the value that RNC preserves need to be taken out here, utilizes its computing network interference value I.Concrete account form as previously mentioned, just repeats no more here.
The processing of this step can be adopted and existing identical processing mode, after the startup deletion action, directly deletes corresponding carriers, then performs step 204.Perhaps, preferably, can also further judge on the carrier wave of selecting whether have the user, if do not exist, directly delete corresponding carriers, and perform step 204, if there is the user, relative users is moved on other carrier waves, if move successfully, delete corresponding carriers, and perform step 204, if move unsuccessfully, select again interference value time large carrier wave to repeat this step, until on corresponding carriers, do not exist user or user to move, successfully do not delete afterwards corresponding carriers.
In addition, in this step, adopt optimal way to carry out on carrier wave whether existing the user and while carrying out user's migration operation, when the user moves when failed, according to the descending order of network interferences value, the trial of selecting successively next carrier wave to delete.
Wherein, the mode of renewal local resource state is identical with existing mode.Simultaneously, owing in this residential quarter, newly having deleted carrier wave, so this carrier wave also can change for the interference of other adjacent areas, recalculates in adjacent area with the carrier wave that adds with the N of carrier wave frequently
PriNb, N
SecNbAnd N
PotentialNb.
So far, the carrier wave delet method flow process in the present invention finishes.
By the way, when carrying out the carrier wave deletion, can select the larger carrier wave of network interferences is deleted, thereby reduce greatly the interference for adjacent area by the chance of carrier wave deletion as far as possible.
Above-mentionedly be dynamic resource management method basic in the present invention, utilize for each carrier wave N in each residential quarter
PriNb, N
SecNbAnd N
PotentialNbMaintenance, can calculate in real time the interference of each carrier wave for network, thereby add and during deletion, reduce the interference for network as far as possible at carrier wave.
Except the above-mentioned processing of carrying out carrier wave interpolation and when deletion, when UE access residential quarter, also can, by the calculating for network interferences, reduce the interference of UE access for network.Particularly, when UE accesses certain residential quarter, determine the N of each carrier wave of having set up in this residential quarter
PriNb, N
SecNbAnd N
PotentialNb, and calculate the interference value I of corresponding carriers for network, concrete account form is as previously mentioned; Then, the preferential selection accessed the little carrier wave of network interferences I, according to the I value from small to large, attempts successively access that is:.Like this, the interference of user to network can not only be reduced, also the interference of network to access user can be reduced as far as possible.Simultaneously, UE accesses the carrier wave that the I value is little as far as possible, and during the carrier wave deletion, the UE number that the carrier wave that the I value is large exists can be as far as possible little.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of making, be equal to replacement, improvement etc., within all should being included in the scope of protection of the invention.
Claims (3)
1. a dynamic carrier management method, is characterized in that, the method comprises:
For arbitrary residential quarter of RNC jurisdiction, described RNC is the corresponding N of preservation of each carrier wave i of this residential quarter
PriNb, N
SecNbAnd N
PotentialNbWherein, N
PriNbFor in all adjacent areas of described arbitrary residential quarter, with carrier wave i, being the main carrier number with frequently, N
SecNbFor in all adjacent areas of described arbitrary residential quarter, with carrier wave i, being with frequently and the auxiliary carrier number of having set up, N
PotentialNbFor in all adjacent areas of described arbitrary residential quarter, with carrier wave i, being with unfounded auxiliary carrier number frequently and still;
When needs added carrier wave in described arbitrary residential quarter, RNC was according to the N that has been configured each carrier wave of not yet setting up in this residential quarter
PriNb, N
SecNbAnd N
PotentialNbCalculate the interference I of corresponding carriers to network, select the carrier wave of the interference minimum of network is added, and upgrade in all adjacent areas of described arbitrary residential quarter and the N of the carrier wave that adds with carrier wave frequently
PriNb, N
SecNbAnd N
PotentialNb
When needs were deleted carrier wave in described arbitrary residential quarter, RNC had set up and has allowed the N of each carrier wave of deletion according to this residential quarter
PriNb, N
SecNbAnd N
PotentialNbCalculate the interference I of corresponding carriers to network, select the carrier wave deletion to the interference maximum of network, and upgrade in all adjacent areas of described arbitrary residential quarter and the carrier wave of the deletion N with carrier wave frequently
PriNb, N
SecNbAnd N
PotentialNb
N according to carrier wave
PriNb, N
SecNbAnd N
PotentialNbCalculating this carrier wave to the mode of the interference I of network is: I=α * N
PriNb+ β * N
SecNb+ γ * N
PotentialNbWherein, α>β>γ, α, β, γ is for default weights, be used to representing the influence degree of three kinds of dissimilar interference for network, described three kinds of dissimilar interference be respectively carrier wave i to the interference of all adjacent area main carriers and, carrier wave i to the interference of all auxiliary carrier waves in adjacent area and, carrier wave i to the potential interference of all adjacent areas and.。
2. method according to claim 1, is characterized in that, when the described arbitrary residential quarter of UE access, the method further comprises:
N according to each carrier wave of having set up in this residential quarter
PriNb, N
SecNbAnd N
PotentialNbCalculate the interference I of corresponding carriers to network, the preferential selection accessed the little carrier wave of the interference of network.
3. method according to claim 1, is characterized in that, after calculation plot has been set up and has been allowed the interference I of each carrier wave to network of deletion, select the carrier wave deletion to the interference maximum of network before, the method further comprises:
On the carrier wave of judgement to the interference maximum of network, whether there is the user, if do not exist, delete this carrier wave; If exist, the user on this carrier wave is moved on other carrier waves, this carrier wave of deletion after moving successfully, if move unsuccessful, according to network interferences order is from high to low selected to carrier wave successively, repeat above-mentioned steps, until on corresponding carriers, do not exist user or user to move, successfully do not delete afterwards corresponding carriers.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102282521A CN102316482B (en) | 2010-07-08 | 2010-07-08 | Dynamic carrier management method |
Applications Claiming Priority (1)
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|---|---|---|---|
| CN2010102282521A CN102316482B (en) | 2010-07-08 | 2010-07-08 | Dynamic carrier management method |
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| CN102316482B true CN102316482B (en) | 2013-11-20 |
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| CN101272585B (en) * | 2008-05-12 | 2013-02-13 | 中国移动通信集团设计院有限公司 | Estimation method and device for TD-SCDMA system code resource allocation |
| CN101730240B (en) * | 2008-10-14 | 2012-01-04 | 鼎桥通信技术有限公司 | Method for selecting access carrier of N-frequency point cell |
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