CN103338521A - Inter-cell interference coordination method and device - Google Patents
Inter-cell interference coordination method and device Download PDFInfo
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- CN103338521A CN103338521A CN2013102469419A CN201310246941A CN103338521A CN 103338521 A CN103338521 A CN 103338521A CN 2013102469419 A CN2013102469419 A CN 2013102469419A CN 201310246941 A CN201310246941 A CN 201310246941A CN 103338521 A CN103338521 A CN 103338521A
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Abstract
The invention provides an inter-cell interference coordination method and device. The inter-cell interference coordination method comprises the following steps: acquiring the physical layer parameters of a current cell and determining that whether a physical resource block in a physical high load state exists in the current cell or not according to the physical layer parameters; if the physical resource block in the physical high load state exists in the current cell, acquiring the application layer parameters of the current cell and determining whether the physical resource block in the physical high load state is in an application high load state or not according to the application layer parameters; if the physical resource block in the physical high load state is in the application high load state, sending the description information of the physical resource block in the application high load state to an adjacent cell so as to enable the adjacent cell to perform interference coordination processing according to the description information. The inter-cell interference coordination method not only efficiently reduces the frequent transmission of the description information and saves network resources but also takes full account of the application layer parameters of a network, so that the interference coordination result is more accurate.
Description
Technical field
The present invention relates to the communications field, especially relate to a kind of inter-cell interference coordination method and device.
Background technology
Along with the continuous development of Long Term Evolution (Long Time Evolution is hereinafter to be referred as LTE) correlation technique, identical networking becomes the key that LTE promotes spectrum efficiency, but there is problem of inter-cell interference in identical networking.Inter-Cell Interference Coordination (Inter Cell Interference Coordination, hereinafter to be referred as ICIC) technology is a kind of important technology scheme that solves the LTE problem of inter-cell interference, its basic thought is to limit with the use of minizone coordinated mode to Radio Resource in each residential quarter, comprise that limiting which running time-frequency resource can use, and perhaps limits its transmitting power at certain running time-frequency resource.
Particularly, in the existing ICIC technology, two adjacent residential quarters are by the mutual load harmony messages of X2 interface between eNodeB, comprise following physical layer parameter in this load harmony messages: up interference and thermal noise disturb overload indication (UL Interference Overload Indication, hereinafter to be referred as OI), up strong jamming indication (UL High Interference Indication, hereinafter to be referred as HII) and descending Relative Narrowband TX Power indication (Relative Narrowband Tx Power is hereinafter to be referred as RNTP).The load harmony messages that send according to its neighbor cell that receives certain residential quarter determines the resource dispatching strategy of this Cell Edge User.ICIC is to use mainly as above that several physical layer parameters can not take into full account other and can make that ICIC scheduling result accuracy is not high for the network parameter of scheduling as Cell Edge User resource dispatching strategy foundation, and frequent scheduling waste Internet resources but at present.
Summary of the invention
At problems of the prior art, the invention provides a kind of inter-cell interference coordination method and device, in order to overcome the not high defective of existing ICIC scheduling result accuracy.
The invention provides a kind of inter-cell interference coordination method, comprising:
Obtain the physical layer parameter of current area, and according to described physical layer parameter, determine whether there is the Physical Resource Block that is in the physics high load condition in the described current area;
If exist, then obtain the application layer parameter of described current area, and determine according to described application layer parameter whether the described Physical Resource Block that is in the physics high load condition is in the application high load condition;
If be in the application high load condition, then send the described descriptor that is in the Physical Resource Block of using high load condition to neighbor cell, so that carrying out interference coordination according to described descriptor, handles described neighbor cell.
The invention provides a kind of Inter-Cell Interference Coordination device, comprising:
First determination module is used for obtaining the physical layer parameter of current area, and according to described physical layer parameter, determines whether there is the Physical Resource Block that is in the physics high load condition in the described current area;
Second determination module, be used for if determine to exist in the described current area Physical Resource Block that is in the physics high load condition, then obtain the application layer parameter of described current area, and determine according to described application layer parameter whether the described Physical Resource Block that is in the physics high load condition is in the application high load condition;
Sending module, be used for if determine that the described Physical Resource Block that is in the physics high load condition is in the application high load condition, then send the described descriptor that is in the Physical Resource Block of using high load condition to neighbor cell, handle so that described neighbor cell carries out interference coordination according to described descriptor.
Inter-cell interference coordination method provided by the invention and device, obtain the physical layer parameter of current area by first determination module, and determine whether there is the Physical Resource Block that is in the physics high load condition in the current area according to this physical layer parameter, thereby obtained being in the Physical Resource Block of physics high load condition, obtain the application layer parameter of this current residential quarter by second determination module, and determine according to this application layer parameter whether the above-mentioned Physical Resource Block that is in the physics high load condition is in the application high load condition, have only when the Physical Resource Block that is in the physics high load condition is in the application high load condition simultaneously, just the descriptor with above-mentioned Physical Resource Block sends to neighbor cell, not only effectively reduce the frequent transmission of descriptor, save Internet resources, also by taking into full account the application layer parameter information of network, make the interference coordination result more accurate.
Description of drawings
Fig. 1 is the flow chart of inter-cell interference coordination method embodiment one of the present invention;
Fig. 2 is the flow chart of inter-cell interference coordination method embodiment two of the present invention;
Fig. 3 is the schematic diagram of Inter-Cell Interference Coordination device embodiment one of the present invention;
Fig. 4 is the schematic diagram of Inter-Cell Interference Coordination device embodiment two of the present invention.
Embodiment
Fig. 1 is the flow chart of inter-cell interference coordination method embodiment one provided by the invention, as shown in Figure 1, the inter-cell interference coordination method that present embodiment provides specifically can be used for any communication system that has the minizone co-channel interference, is particularly useful in the LTE system.In the LTE system, the distribution of Internet resources is that unit distributes with the Physical Resource Block, because this system adopts the identical networking mode, makes to have tangible minizone co-channel interference between two adjacent Cell Edge User, makes the performances such as data throughout of edge customer reduce greatly.Physical layer parameter and the application layer parameter of the inter-cell interference coordination method that present embodiment provides by taking into full account Physical Resource Block in the residential quarter, the coordination of carrying out Internet resources for neighbor cell provides foundation, improves and coordinates accuracy as a result.The inter-cell interference coordination method that present embodiment provides can be carried out by cell base station, also can be carried out by a device that arranges separately.
The inter-cell interference coordination method that present embodiment provides specifically comprises:
In the present embodiment, the current area base station obtains the physical layer parameter of each Physical Resource Block in the current area in real time, and this physical layer parameter comprises at least one parameter among interference and thermal noise OI, strong jamming HII and the Relative Narrowband TX Power indication RNTP.And determine whether there is the Physical Resource Block that is in the physics high load condition in each Physical Resource Block of residential quarter, can realize according to existing ICIC technology, do not give unnecessary details at this according to above-mentioned physical layer parameter.If do not exist, then continue to gather in real time the physical layer parameter of obtaining each Physical Resource Block and judge.
In the present embodiment, when determining that according to physical layer parameter existence is in the Physical Resource Block of physics high load condition, the application layer parameter of obtaining current area is gathered in the current area base station, such as the data traffic sum in the current area and/or signaling sum, and determine according to this application layer parameter whether this Physical Resource Block that is in the physics high load condition is in the application high load condition simultaneously.What deserves to be explained is that the acquisition of described application layer parameter is by institute's loaded service data statistics in all Physical Resource Block that carry out service communication in the current area is obtained.
In the present embodiment, because in actual applications, Physical Resource Block available in each residential quarter is fixed, and namely bandwidth is 20M, totally 100 Physical Resource Block.If current area is in the application high load condition, illustrate that whole Physical Resource Block all are used in the current area, at this moment, current area does not have other can supply the Physical Resource Block of scheduling, can't self regulate the distribution of Physical Resource Block in center of housing estate and cell edge be in the physics high load condition, then can only regulate the method for salary distribution of these Physical Resource Block that are in the physics high load condition in this neighbor cell by neighbor cell and reduce presence of intercell interference to current area.If current area is not in the application high load condition, illustrate that the Physical Resource Block that is in idle condition in the current area in addition can be for scheduling, current area can realize that the scheduling of Physical Resource Block in the current area distributes, and does not need to trigger the Coordination Treatment of neighbor cell by replace the modes such as Physical Resource Block that are in the physics high load condition with the Physical Resource Block that is in idle condition so.
In the present embodiment, when the Physical Resource Block that is in the physics high load condition is in the application high load condition simultaneously, illustrate that the physical channel environment that this Physical Resource Block experiences in the current area is abominable, the service application situation is busy and do not have other available Physical Resource Block can supply scheduling, if the neighbor cell edge customer uses this Physical Resource Block to carry out service communication, then can form obvious interference to the current area edge customer, reduce the service quality of this current Cell Edge User greatly.Therefore, the current area base station sends the descriptor that this is in the Physical Resource Block of using high load condition to neighbor cell base station, makes neighbor cell base station to coordinate configuration to the resource of the edge customer in its coverage according to this descriptor.
In the present embodiment, the current area base station is by obtaining the physical layer parameter of current area, and determine whether there is the Physical Resource Block that is in the physics high load condition in the current area according to this physical layer parameter, thereby obtained being in the Physical Resource Block of physics high load condition, afterwards by obtaining the application layer parameter of this current residential quarter, and determine according to this application layer parameter whether the above-mentioned Physical Resource Block that is in the physics high load condition is in the application high load condition, have only when the Physical Resource Block that is in the physics high load condition is in the application high load condition simultaneously, just the descriptor with above-mentioned Physical Resource Block sends to neighbor cell, not only effectively reduce the frequent transmission of descriptor, save Internet resources, also by taking into full account the application layer parameter information of network, make the interference coordination result more accurate.
Fig. 2 is the flow chart of inter-cell interference coordination method embodiment two of the present invention, and as shown in Figure 2, this method comprises:
Particularly, described application layer parameter comprises the data traffic sum of residential quarter and/or the signaling sum of residential quarter.Since the user in this current residential quarter by this current cell base station finish with the residential quarter in the residential quarter outside user's communications, so the current area base station can obtain the total and signaling sum of the data traffic of residential quarter.What deserves to be explained is, described data traffic sum and signaling sum have reflected the operating position of the different service types in the residential quarter respectively, such as, data volumes such as video traffic are big relatively, can be by such application load situation in the data traffic sum reflection residential quarter, and the data volume that produces such as business such as little letter, picture and communication control information is smaller, can reflect such application load situation by the statistics to signaling sum in the residential quarter.
Particularly, both can also can be with both common foundations as judgement as judging whether the above-mentioned Physical Resource Block that is in the physics high load condition is in the foundation of using high load condition with in the signaling sum of the data traffic of residential quarter sum and residential quarter any.
Preferably, with the signaling sum of the data traffic of residential quarter sum and residential quarter as judging whether the above-mentioned Physical Resource Block that is in the physics high load condition is in the foundation of application high load condition, then work as this data traffic sum greater than first predetermined threshold value, and the signaling sum is during greater than second predetermined threshold value, illustrating that this current residential quarter is current is in the heavy traffic stage, whole Physical Resource Block in the current area all are used, be that current area can't be dispatched the distribution of this Physical Resource Block that is in the physics high load condition in this current residential quarter, thereby determine that this Physical Resource Block that is in the physics high load condition is in the application high load condition simultaneously.What deserves to be explained is that described first predetermined threshold value and second predetermined threshold value can dynamically be adjusted according to the network actual conditions and decide.
In the practical application, because that current area base station and neighbor cell base station are undertaken by X2 interface is mutual, therefore, the descriptor that needs to be in the Physical Resource Block of application high load condition is carried out data encapsulation, makes it satisfy the transmission specification of X2 interface.Comprise the described physical layer parameter that is in the Physical Resource Block of using high load condition in this descriptor, neighbor cell base station is after receiving this descriptor, obtain the physical layer parameter that this is in the Physical Resource Block of using high load condition through resolving, carrying out interference coordination according to this physical layer parameter handles, such as, forbid in the edge customer of this neighbor cell, using this Physical Resource Block, perhaps, adjust the transmitting power of this Physical Resource Block etc.
In the present embodiment, by determining according to the data traffic sum of residential quarter and/or the signaling sum of residential quarter whether the Physical Resource Block that is in the physics high load condition is in the application high load condition, taken into full account the application load situation of current current area, application load situation with the residential quarter is replenished the scheduling foundation of Physical Resource Block in neighbor cell that is in the physics high load condition, make Inter-Cell Interference Coordination more accurately reflect the application load situation of residential quarter, avoid because the network resources waste that frequent scheduling causes.
Fig. 3 is the schematic diagram of Inter-Cell Interference Coordination device embodiment one of the present invention, and as shown in Figure 3, this device comprises:
Sending module 13, be used for if determine that the described Physical Resource Block that is in the physics high load condition is in the application high load condition, then send the described descriptor that is in the Physical Resource Block of using high load condition to neighbor cell, handle so that described neighbor cell carries out interference coordination according to described descriptor.
The device of present embodiment can be used for carrying out the technical scheme of method embodiment shown in Figure 1, and its realization principle and technique effect are similar, repeat no more herein.
Fig. 4 is the schematic diagram of Inter-Cell Interference Coordination device embodiment two of the present invention, and as shown in Figure 4, on basis embodiment illustrated in fig. 3, described second determination module 12 comprises:
Determining unit 123 is used for if the value of described application layer parameter, determines then that the described Physical Resource Block that is in the physics high load condition is in the application high load condition simultaneously greater than predetermined threshold value.
Further, described sending module 13 comprises:
Transmitting element 132 is used for sending to described neighbor cell through the descriptor after the data encapsulation by X2 interface with described, handles so that described neighbor cell carries out interference coordination according to described descriptor.
The device of present embodiment can be used for carrying out the technical scheme of method embodiment shown in Figure 2, and its realization principle and technique effect are similar, repeat no more herein.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be finished by the relevant hardware of program command, aforesaid program can be stored in the computer read/write memory medium, this program is carried out the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
It should be noted that at last: above each embodiment is not intended to limit only in order to technical scheme of the present invention to be described; Although the present invention has been described in detail with reference to aforementioned each embodiment, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment puts down in writing, and perhaps some or all of technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the scope of various embodiments of the present invention technical scheme.
Claims (10)
1. an inter-cell interference coordination method is characterized in that, comprising:
Obtain the physical layer parameter of current area, and according to described physical layer parameter, determine whether there is the Physical Resource Block that is in the physics high load condition in the described current area;
If exist, then obtain the application layer parameter of described current area, and determine according to described application layer parameter whether the described Physical Resource Block that is in the physics high load condition is in the application high load condition;
If be in the application high load condition, then send the described descriptor that is in the Physical Resource Block of using high load condition to neighbor cell, so that carrying out interference coordination according to described descriptor, handles described neighbor cell.
2. method according to claim 1 is characterized in that, describedly determines that according to described application layer parameter whether the described Physical Resource Block that is in the physics high load condition is in the application high load condition, comprising:
Judge that whether the value of described application layer parameter is greater than predetermined threshold value;
If greater than, determine that then the described Physical Resource Block that is in the physics high load condition is in the application high load condition simultaneously.
3. method according to claim 1 and 2 is characterized in that, described application layer parameter comprises:
The data traffic of residential quarter sum and/or
The signaling sum of residential quarter.
4. method according to claim 3 is characterized in that, described physical layer parameter comprises:
At least one parameter among interference and thermal noise OI, strong jamming HII and the Relative Narrowband TX Power indication RNTP.
5. method according to claim 3 is characterized in that, and is described to the described descriptor that is in the Physical Resource Block of using high load condition of neighbor cell transmission, so that described neighbor cell carries out the interference coordination processing according to described descriptor, comprising:
The described descriptor that is in the Physical Resource Block of using high load condition is carried out data encapsulation, comprise the described physical layer parameter that is in the Physical Resource Block of using high load condition in the described descriptor;
Send to described neighbor cell through the descriptor after the data encapsulation by X2 interface with described, handle so that described neighbor cell carries out interference coordination according to described descriptor.
6. an Inter-Cell Interference Coordination device is characterized in that, comprising:
First determination module is used for obtaining the physical layer parameter of current area, and according to described physical layer parameter, determines whether there is the Physical Resource Block that is in the physics high load condition in the described current area;
Second determination module, be used for if determine to exist in the described current area Physical Resource Block that is in the physics high load condition, then obtain the application layer parameter of described current area, and determine according to described application layer parameter whether the described Physical Resource Block that is in the physics high load condition is in the application high load condition;
Sending module, be used for if determine that the described Physical Resource Block that is in the physics high load condition is in the application high load condition, then send the described descriptor that is in the Physical Resource Block of using high load condition to neighbor cell, handle so that described neighbor cell carries out interference coordination according to described descriptor.
7. device according to claim 6 is characterized in that, described second determination module comprises:
Acquiring unit is used for then obtaining the application layer parameter of described current area if determine to have the Physical Resource Block that is in the physics high load condition in the described current area;
Judging unit is used for judging that whether the value of described application layer parameter is greater than predetermined threshold value;
Determining unit is used for if the value of described application layer parameter, determines then that the described Physical Resource Block that is in the physics high load condition is in the application high load condition simultaneously greater than predetermined threshold value.
8. according to claim 6 or 7 described devices, it is characterized in that described application layer parameter comprises:
The data traffic of residential quarter sum and/or
The signaling sum of residential quarter.
9. device according to claim 8 is characterized in that, described physical layer parameter comprises:
At least one parameter among interference and thermal noise OI, strong jamming HII and the Relative Narrowband TX Power indication RNTP.
10. device according to claim 8 is characterized in that, described sending module comprises:
Encapsulation unit is used for the described descriptor that is in the Physical Resource Block of using high load condition is carried out data encapsulation, comprises the described physical layer parameter that is in the Physical Resource Block of using high load condition in the described descriptor;
Transmitting element is used for sending to described neighbor cell through the descriptor after the data encapsulation by X2 interface with described, handles so that described neighbor cell carries out interference coordination according to described descriptor.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2022236636A1 (en) * | 2021-05-10 | 2022-11-17 | 株式会社Ntt都科摩 | Electronic device in high-altitude platform station-ground communication system |
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| CN102065550A (en) * | 2009-11-12 | 2011-05-18 | 大唐移动通信设备有限公司 | Method and device for reducing inter-cell interference of orthogonal frequency division multiplexing system and terminal thereof |
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