CN102316467B - The method and apparatus of allocate communications resource - Google Patents
The method and apparatus of allocate communications resource Download PDFInfo
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- CN102316467B CN102316467B CN201010223305.0A CN201010223305A CN102316467B CN 102316467 B CN102316467 B CN 102316467B CN 201010223305 A CN201010223305 A CN 201010223305A CN 102316467 B CN102316467 B CN 102316467B
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Abstract
The invention discloses a kind of method and apparatus of allocate communications resource, to solve the problem that there is more serious interference in prior art between different sector between inner ring user and outer shroud user.The method comprises: be divided into inner ring user and outer shroud user to the user in community; Outer shroud user in different for described community sector is divided to different frame.Adopt technical scheme of the present invention, the interference between different sector inner ring user and outer shroud user can be suppressed, thus improve system spectrum utilance, increase the capacity of system.
Description
Technical field
Invention relates to the communication technology, particularly relates to a kind of method and apparatus of allocate communications resource.
Background technology
Channeling technology is to improve the availability of frequency spectrum and expanding system capacity and a kind of networking technology proposed.Traditional channeling technology can be divided into alien frequencies multiplex technique and same multiplex technique frequently.Can accomplish that frequency duplex factor as one is 1 with frequently multiplex technique, the community namely in whole system coverage uses identical frequency band to be user's service in this community.By in system, several use the community of different frequency bands to form a multiplexing cluster to alien frequencies multiplex technique, and the frequency band taken in this multiplexing cluster is all frequency bands that system allows to use.Whole system is then made up of multiplexing cluster so one by one.
Be only 1 with frequency multiplex technique due to multiplexing factor, therefore there is the very high availability of frequency spectrum and power system capacity.But using identical frequency band due to all communities, edge customer can be subject to the co-channel interference from other neighbor cells, and communication quality is had a strong impact on, and thus seldom uses in the cellular system of reality.Alien frequencies multiplex technique due to co-frequency cell physical location relatively far apart, well can suppress co-channel interference.But increasingly increasing along with wireless user, the power system capacity of alien frequencies multiplex system is subject to very large test.
Partial frequency multiplexing FFR technology is a kind of new technology improving power system capacity.The thought of FFR is: the user of center of housing estate, and channel condition is better, and is separated by distant due to physical location, and itself is also little to the interference of other communities, so being distributed in frequency duplex factor as one is on the multiplexing collection of 1; Cell Edge User, due to distant from base station distance, channel condition is poor, with other communities user between interference ratio comparatively large, so being distributed in frequency duplex factor as one is on the multiplexing collection of 3.
Due to the frequency that user is mutually orthogonal in OFDM multiplexing access OFDMA system, so the interference of all users is just all from other communities in community, the carrier-in-interference noise ratio CINR being positioned at Cell Center User is like this greatly enhanced.But be positioned at the user of cell edge, due to away from base station, the interference that neighbor cell uses the user of same carrier wave resource can be subject to, cause edge customer communication quality poor, reduce the throughput of system.
Fig. 1 is the schematic diagram according to prior art small area inner and outer ring Region dividing, system divides inner and outer ring according to signal quality, and the Region dividing that signal is strong is inner ring, and the weak Region dividing of signal is outer shroud, wherein A0, A1, A2 represent sector 0 respectively, the outer region of sector 1 and sector 2, B0, B1, B2 represent sector 0 respectively, the endocyclic area of sector 1 and sector 2.With for convenience of describing, if overall system bandwidth is S.
The frequency resource that traditional frequency division FFR scheme endocyclic area uses accounts for 2/3 of whole frequency band, i.e. 2S/3, and outer region uses 1/3 of whole frequency band, i.e. S/3.Fig. 2 is the schematic diagram taken according to inner and outer ring time-frequency domain resources in conventional frequency division FFR method in prior art.As shown in Figure 2, inner ring and outer shroud frequency domain divide and come by the method, and inner and outer ring region, same sector does not exist interference problem, and inner ring uses 2/3 total frequency band, improves the availability of frequency spectrum to a certain extent.But due to different sector users frequency of utilization resource simultaneously, cause there is more serious interference between inner ring user and outer shroud user between different sector.
Realizing in process of the present invention, inventor finds according to prior art, there is more serious interference between different sector between inner ring user and outer shroud user.
Summary of the invention
Main purpose of the present invention is the method and apparatus providing a kind of allocate communications resource, to solve the problem that there is more serious interference in prior art between different sector between inner ring user and outer shroud user.
For solving the problem, according to an aspect of the present invention, provide a kind of method of allocate communications resource, comprising: inner ring user and outer shroud user are divided into the user in community; Outer shroud user in different for described community sector is divided to different frame.
For solving the problem, according to a further aspect in the invention, providing a kind of device of allocate communications resource, comprising: preserve module, for preserving the division result of inner ring user in community and outer shroud user; Distribution module, for the division result for the inner ring user in community and outer shroud user, is divided to different frame by the outer shroud user in different for described community sector.
According to technical scheme of the present invention, the interference between different sector inner ring user and outer shroud user can be suppressed, thus improve system spectrum utilance, increase the throughput of system.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram according to prior art small area inner and outer ring Region dividing;
Fig. 2 is the schematic diagram taken according to inner and outer ring time-frequency domain resources in conventional frequency division FFR method in prior art;
Fig. 3 is the flow chart of the method for allocate communications resource according to the embodiment of the present invention;
Fig. 4 be according in the embodiment of the present invention in different frame for different sectors outer shroud provides the schematic diagram of running time-frequency resource;
Fig. 5 is the schematic diagram of the apparatus structure according to the allocate communications resource in the embodiment of the present invention; And
Fig. 6 is a kind of flow chart providing the implementation of running time-frequency resource for user according to the embodiment of the present invention.
Embodiment
Hereinafter also describe the present invention in detail with reference to accompanying drawing in conjunction with the embodiments.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.
Fig. 3 is the flow chart of the method for allocate communications resource according to the embodiment of the present invention.
As shown in Figure 3, the method for the allocate communications resource in the embodiment of the present invention mainly comprises the steps:
Step S32: inner ring user and outer shroud user are divided into the user in community.
Step S34: the outer shroud user in different for community sector is divided to different frame.
Below above-mentioned steps is described further again.Fig. 4 be according in the embodiment of the present invention in different frame for different sectors outer shroud provides the schematic diagram of running time-frequency resource.With reference to figure 4, in figure in different frame, namely in 3m frame, 3m+1 frame, 3m+2 frame and 3 (m+1) frame, be respectively outer region A0, A1, A2, A0 division running time-frequency resource of sector 0, sector 1, sector 2, sector 0, along with the extension of time shaft, each outer region can be continued as according to the rule shown in figure and divide running time-frequency resource.Fig. 4 is only and illustrates, can take other dividing mode, as long as can for different sectors outer shroud provides running time-frequency resource in different frame.Such as, 0 to S/3 in frequency range or 2S/3 to S can be divided into outer region at the second frame.Can find out and adopt in this way, the interference between different sector inner ring user and outer shroud user can be suppressed, thus improve system spectrum utilance, increase the throughput of system.
In step s 32, specifically according to the signal quality information of reporting of user, the user of community can be divided into inner ring user and outer shroud user.Here signal quality information can be specifically carrier-in-interference noise ratio.Before division inner ring user and outer shroud user, uplink frame structure can be divided into endocyclic area and outer region.If community comprises 3 sectors, then endocyclic area can take 2/3 total frequency band at frequency domain, and outer region can take 1/3 total frequency band; Usually, if community comprises N number of sector, then endocyclic area can take the total frequency band of (N-1)/N at frequency domain, and outer region can take the total frequency band of 1/N.
Fig. 5 is the schematic diagram of the apparatus structure according to the allocate communications resource in the embodiment of the present invention.As shown in Figure 5, in the embodiment of the present invention, the device 50 of allocate communications resource mainly comprises preserves module 51 and distribution module 53, wherein preserves module for preserving the division result of inner ring user in community and outer shroud user; Distribution module is used for the division result for the inner ring user in community and outer shroud user, and the outer shroud user in different for community sector is divided to different frame.
The device 50 of allocate communications resource can also comprise receiver module and user divides module, wherein receiver module, for receiving the signal quality information of reporting of user; User divides module, for the signal quality information according to reporting of user, the user of community is divided into inner ring user and outer shroud user.
The device 50 of allocate communications resource can also comprise Region dividing module, and for uplink frame structure is divided into endocyclic area and outer region, wherein endocyclic area takies 2/3 total frequency band at frequency domain, and outer region takies 1/3 total frequency band.
Distribution module 53 may be used in N × m frame for sector 0 divides the running time-frequency resource shared by outer region, for sector 1 divides the running time-frequency resource shared by outer region in N × m+1 frame, the like, for sector (N-1) divides the running time-frequency resource shared by outer region in N × m+ (N-1) number frame; Wherein N is the sector number of community.
Below in conjunction with Fig. 6, the optional specific implementation flow process of the one of the technical scheme of the embodiment of the present invention is made an explanation.Fig. 6 is a kind of flow chart providing the implementation of running time-frequency resource for user according to the embodiment of the present invention.
First according to the inner and outer ring region in frame number dividing system uplink frame.Can divide according to the mode of Fig. 4.Be specially:
(1) if the frame needing transmission is 3m frame (wherein m=0,1,2......), then in this frame for sector 0 divides inner and outer ring region: S/3 frequency band shared by frequency domain 0 to S/3 frequency band is frequency domain resource shared by this sector outer shroud, 2S/3 frequency band frequency domain resource shared by system inner ring shared by all the other S/3 to S frequency bands; (2) if, same transmission frame is 3m+1 frame, then in this frame for sector 1 divides outer region: the frequency domain resource shared by this sector outer shroud of S/3 frequency band shared by frequency domain S/3 to 2S/3 frequency band, all the other 2S/3 frequency bands are frequency domain resource shared by system inner ring; (3) if, in like manner transmission frame be 3m+2 frame, then in this frame for sector 2 divides outer region: the frequency domain resource shared by this sector outer shroud of S/3 frequency band shared by frequency domain 2S/3 to S frequency band, all the other 2S/3 frequency bands are frequency domain resource shared by system inner ring.
Next user's inner and outer ring type is determined.Average statistical is asked to the CINR that terminal use reports in base station.If the CINR average of terminal to report is greater than thresholding TH, then this terminal use is judged to be inner ring user; The CINR average that terminal use reports else if is less than or equal to thresholding TH, then this terminal use is judged to be outer shroud user.
Then for user provides corresponding running time-frequency resource.First judge user's inner and outer ring type, if this user is inner ring user, then the endocyclic area of the arbitrary frame that will transmit shortly distributes running time-frequency resource for user, provides user to transmit service needed for data; If this user is outer shroud user, then need to be defined as according to sector, user place the frame that user provides running time-frequency resource: namely the user of sector i (wherein i=0,1,2) needs use 3m+i frame (wherein m=0,1 ...) running time-frequency resource that provides.Then outer region in selected frames provides running time-frequency resource for user.Flow process so far terminates.
Be illustrating of example according to three sector cells above, in practical application scene, include the community of other sector numbers.If the sector number in community is N, then when uplink frame structure is divided into endocyclic area and outer region, make endocyclic area take the total frequency band of (N-1)/N at frequency domain, outer region takies the total frequency band of 1/N.So also can adopt the similar FFR scheme of dividing based on time domain frame, to eliminate the interference between different sector outer shroud user and inner ring user, thus improve the availability of frequency spectrum, reach the object improving power system capacity.
Obviously, those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on network that multiple calculation element forms, alternatively, they can realize with the executable program code of calculation element, thus, they can be stored and be performed by calculation element in the storage device, and in some cases, step shown or described by can performing with the order be different from herein, or they are made into each integrated circuit modules respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a method for allocate communications resource, is characterized in that, comprising:
Inner ring user and outer shroud user are divided into the user in community, wherein, if the carrier-in-interference noise ratio CINR average of terminal to report is greater than thresholding TH, then user corresponding for this terminal are judged to be inner ring user; The CINR average that terminal use reports else if is less than or equal to thresholding TH, then user corresponding for this terminal is judged to be outer shroud user;
Outer shroud user in different for described community sector is divided to different frame;
Wherein,
Described community comprises N number of sector, and wherein, endocyclic area takies the total frequency band of (N-1)/N at frequency domain, and outer region takies the total frequency band of 1/N;
Outer shroud user in different for described community sector is divided to different frame comprise: for sector 0 divides the running time-frequency resource shared by outer region in N × m frame, for sector 1 divides the running time-frequency resource shared by outer region in N × m+1 frame, the like, for sector (N-1) divides the running time-frequency resource shared by outer region in N × m+ (N-1) number frame; Wherein m be not less than 0 integer.
2. method according to claim 1, is characterized in that, is divided into inner ring user and outer shroud user comprises to the user in community:
The user of community is divided into inner ring user and outer shroud user by the signal quality information according to reporting of user.
3. method according to claim 2, is characterized in that, described signal quality information comprises carrier-in-interference noise ratio.
4. method according to claim 1, is characterized in that,
Described community comprises 3 sectors;
Also comprise before the user of community being divided into inner ring user and outer shroud user:
Uplink frame structure is divided into endocyclic area and outer region, and wherein endocyclic area takies 2/3 total frequency band at frequency domain, and outer region takies 1/3 total frequency band.
5. method according to claim 1, is characterized in that,
Described community comprises N number of sector;
Also comprise before the user of community being divided into inner ring user and outer shroud user:
Uplink frame structure is divided into endocyclic area and outer region, and wherein endocyclic area takies the total frequency band of (N-1)/N at frequency domain, and outer region takies the total frequency band of 1/N.
6. a device for allocate communications resource, is characterized in that, comprising:
Preserving module, for preserving the division result of inner ring user in community and outer shroud user, wherein, if the carrier-in-interference noise ratio CINR average of terminal to report is greater than thresholding TH, then user corresponding for this terminal being judged to be inner ring user; The CINR average that terminal use reports else if is less than or equal to thresholding TH, then user corresponding for this terminal is judged to be outer shroud user;
Distribution module, for the division result for the inner ring user in community and outer shroud user, is divided to different frame by the outer shroud user in different for described community sector; Wherein, described community comprises N number of sector, and endocyclic area takies the total frequency band of (N-1)/N at frequency domain, and outer region takies the total frequency band of 1/N;
Described distribution module also in N × m frame for sector 0 divides the running time-frequency resource shared by outer region, for sector 1 divides the running time-frequency resource shared by outer region in N × m+1 frame, the like, for sector (N-1) divides the running time-frequency resource shared by outer region in N × m+ (N-1) number frame; Wherein N is the sector number of community.
7. device according to claim 6, is characterized in that, also comprises:
Receiver module, for receiving the signal quality information of reporting of user;
User divides module, for the signal quality information according to reporting of user, the user of community is divided into inner ring user and outer shroud user.
8. device according to claim 6, is characterized in that, also comprises Region dividing module, and for uplink frame structure is divided into endocyclic area and outer region, wherein endocyclic area takies 2/3 total frequency band at frequency domain, and outer region takies 1/3 total frequency band.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101222728A (en) * | 2007-01-09 | 2008-07-16 | 华为技术有限公司 | Method and system for using time frequency resource in OFDMA system |
| EP2079257A1 (en) * | 2008-01-10 | 2009-07-15 | Nokia Siemens Networks Oy | Time based and hybrid resource partitioning |
| CN101742519A (en) * | 2008-11-05 | 2010-06-16 | 中国移动通信集团公司 | Frequency resource allocation method and device |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101222728A (en) * | 2007-01-09 | 2008-07-16 | 华为技术有限公司 | Method and system for using time frequency resource in OFDMA system |
| EP2079257A1 (en) * | 2008-01-10 | 2009-07-15 | Nokia Siemens Networks Oy | Time based and hybrid resource partitioning |
| CN101742519A (en) * | 2008-11-05 | 2010-06-16 | 中国移动通信集团公司 | Frequency resource allocation method and device |
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