CN102026390A - Base station and resource allocation method for realizing interference coordination among cells - Google Patents
Base station and resource allocation method for realizing interference coordination among cells Download PDFInfo
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Abstract
The invention discloses a base station and a resource allocation method for realizing interference coordination among cells. The method comprises the following steps: dividing wireless resources into N numbered resource collections according to the number of soft frequency reuse cells; setting the use priority levels of each resource collection of each user packet divided according to user locations in each cell, wherein different user packets in the same cell have different use priority levels for the same resource collection; and distributing resources for the users according to the use priority levels of the users to use the resource collections in each cell. The invention has the advantages that since the centre user and fringe users in the same cell have different use priority levels for the resource collections, the spectrum utilization rate is improved, and simultaneously the frequency selectivity gain and the multi-user diversity gain are improved.
Description
Technical field
The present invention relates to wireless communication technology field, relate in particular to the resource allocation methods of a kind of base station and realization Inter-Cell Interference Coordination thereof.
Background technology
By adopting single-carrier frequency division multiple access (Single Carrier-Frequency Division Multiple Access, SC-FDMA) technology, 3GPP Long Term Evolution (Long Term Evolution, LTE) interference problem is solved preferably in the sub-district of system up-link, presence of intercell interference becomes restriction Cell Edge User transmission rate and service quality (Quality of Service, key point QoS).
In order to guarantee the transfer of data demand of Cell Edge User, promote the cell edge spectrum efficiency, the LTE system has introduced Inter-Cell Interference Coordination (Inter-Cell Interference Coordination, ICIC) technology.The basic principle of Inter-Cell Interference Coordination is that the use to resource in the system is provided with certain limitation, to coordinate the behavior between a plurality of sub-districts, avoids producing serious disturbance.According to the difference of coordinating resource, various ICIC can be divided into frequency coordination and power coordination two big classes, its typical scenario is respectively restriction Physical Resource Block (Physical Resource Block, PRB) soft-frequency reuse of Shi Yonging (Soft Frequency Reuse, SFR) the part power control strategy of strategy and power-limiting use.
Compare with traditional channeling, in numerous interference coordination schemes, soft-frequency reuse is the basis, and other scheme all is the improvement of carrying out on this.Fig. 1 has provided the example of soft-frequency reuse, and its basic ideas are to allow Cell Center User freely to use all frequency resources, and for Cell Edge User, only allow them to use a part of frequency resource according to the rule of channeling.The part power control strategy is meant that in order to guarantee the message transmission rate of edge customer, Cell Edge User does not limit transmitting power usually on frequency band corresponding, and Cell Center User need limit its transmitting power.
Above-mentioned ICIC technology is easier to implement, and can play interference mitigation effect preferably.Yet for the soft-frequency reuse scheme, because Cell Edge User can use the resource of whole frequency interior 1/3 at most, so the availability of frequency spectrum is low, can bring the loss of frequency selectivity gain and multi-user diversity gain simultaneously to the resource limit of edge customer.In addition, because the LTE up-link has adopted the power control strategy based on power spectral density, since transmit power spectral density * bandwidth=transmitting power, and the mode that adopts at present is with its reduction, until making transmitting power not be higher than specified transmitting power on the density of Initial Trans spectrum.When the resource bandwidth of being distributed was bigger, having reduced the transmit power spectral density that is adopted the back at last may be very low like this, caused the receiving terminal Signal to Interference plus Noise Ratio can not satisfy the requirement that the base station receives.Therefore as seen the single scheduling bandwidth of edge customer will be subject to the specified transmitting power of terminal, and for LTE up, edge customer does not have unnecessary power to be used to promote signal to noise ratio usually.This also is above-mentioned soft-frequency reuse scheme for the improvement of ascending edge throughput not as descending obvious results reason.
As seen, for LTE system up, because the transmit power limited of Cell Edge User is in the specified transmitting power of user terminal, above-mentioned simple frequency is coordinated or the power coordination strategy might not play the effect that promotes the edge customer signal to noise ratio, improves the edge throughput, this embodies particularly evident under interference-limited scene.
For interference-limited scene, if according to identical benchmark be in the system all users power contorl parameters is set is transmit power spectral density and specified transmitting power, then Cell Edge User is in the limited zone of ascending power mostly, at this moment, if still distribute bigger bandwidth for the user, then the transmitting power of UE will be subjected to blocking of its specified transmitting power, cause the receiving terminal Signal to Interference plus Noise Ratio can not satisfy the requirement that the base station receives, therefore must cause BLER (Block Error Ratio, bLock error rate) rises and the increase of retransmission probability, thereby restricted the lifting of edge customer transmission rate.
Summary of the invention
The embodiment of the invention provides a kind of base station and realizes the resource allocation methods of coordinating district interference, in order to alleviate as far as possible sector average behavior and Cell Center User performance is caused under the prerequisite of negative effect, brings the significantly lifting of community marginal user performance.
The invention provides a kind of base station and realize the resource allocation methods of Inter-Cell Interference Coordination, comprising:
According to the number of cells N of soft-frequency reuse, Radio Resource is divided into N resource collection;
Each user grouping of dividing according to customer location use priority to each resource collection is set in each sub-district, and different user divides into groups to the use priority difference of same resource collection wherein same the sub-district in;
According to the use priority of each user grouping in each sub-district, be user resource allocation to each resource collection.
The present invention also provides a kind of base station of realizing the resource allocation of Inter-Cell Interference Coordination, comprising:
The resource division unit is used for the number of cells N according to soft-frequency reuse, and Radio Resource is divided into N resource collection;
Priority is provided with the unit, is used to be provided with in each sub-district each user grouping of dividing according to customer location use priority to each resource collection, and different user divides into groups to the use priority difference of same resource collection wherein same the sub-district in;
Resource allocation unit is used for being user resource allocation according to the use priority of each user grouping in each sub-district to each resource collection.
Utilize the resource allocation methods of base station provided by the invention and realization coordinating district interference thereof, have following beneficial effect: the coordinate scheme to existing soft-frequency reuse has proposed improvement, for Cell Center User and Cell Edge User, they can use whole frequency resources, but central user is different to the use priority of each resource collection with edge customer in the same sub-district, improve the availability of frequency spectrum, can bring the raising of frequency selectivity gain and multi-user diversity gain simultaneously.
Description of drawings
Fig. 1 is a soft-frequency reuse resource allocation schematic diagram;
Fig. 2 realizes the resource allocation methods flow chart of coordinating district interference for base station of the present invention;
Fig. 3 is the power spectral density schematic diagram of diverse location UE before and after power is adjusted in the embodiment of the invention;
Fig. 4 is the architecture of base station figure that realizes the resource allocation of Inter-Cell Interference Coordination in the embodiment of the invention.
Embodiment
Illustrate in greater detail below in conjunction with the resource allocation methods of drawings and Examples base station provided by the invention and realization coordinating district interference thereof.
How designing rational interference coordination mechanism based on existing standard, the performance of interference mitigation effect, lifting edge customer is main contents of the present invention to reach preferably.As shown in Figure 2, the invention provides the resource allocation methods that Inter-Cell Interference Coordination is realized in a kind of base station, comprising:
Step S201 according to the number of cells N of soft-frequency reuse, is divided into N resource collection with Radio Resource;
Generally according to the dividing condition of sub-district, can plan the number of cells that carries out soft-frequency reuse, the typical value of General N is 3 or 4, can certainly be more sub-districts, is generally 3～7.
Step S202 is provided with in each sub-district each user grouping of dividing according to customer location use priority to each resource collection, and different user divides into groups to the use priority difference of same resource collection wherein same the sub-district in;
For user in each sub-district, can be belonged to different user grouping according to the customer location difference, a sub-district is divided at least two user grouping, and preferably, the user grouping that sub-district is divided in the present embodiment is specially Cell Center User and Cell Edge User.
Step S203 according to the use priority of each user grouping in each sub-district to each resource collection, is user resource allocation.
The resource allocation methods of base station provided by the invention and realization coordinating district interference thereof, in order further to promote the throughput of Cell Edge User, coordinate scheme to existing soft-frequency reuse has proposed improvement, introduce the resource service regeulations that resource collection uses the notion adjustment soft-frequency reuse of priority, for Cell Center User and Cell Edge User, they can use whole frequency resources, but central user is different to the use priority of each resource collection with edge customer in the same sub-district, improve the availability of frequency spectrum, can bring the raising of frequency selectivity gain and multi-user diversity gain simultaneously.
The user grouping of dividing according to customer location in the sub-district in the first embodiment of the invention is specially Cell Center User and Cell Edge User, wherein each resource collection is under the jurisdiction of a sub-district, wherein, the Cell Edge User of each sub-district, for the use priority of the resource collection that is under the jurisdiction of this sub-district greater than Cell Center User, for the use priority of the resource collection except that the resource collection that is under the jurisdiction of this sub-district, all less than Cell Center User.By this use priority set-up mode, make Cell Edge User compare the preferential interior resource of the resource collection that is under the jurisdiction of this sub-district of using of Cell Center User, and Cell Center User is compared Cell Edge User and is preferentially used resource in other resource collection, preferably, the resource collection that is under the jurisdiction of different districts is different, therefore, can guarantee that minimum can the use of Cell Edge User is subordinate to the resource of sub-district separately, guarantee that to a certain extent the resource of Cell Edge User is used.
Preferably, the priority difference that the same user grouping of different districts is used resource in the same resource collection, the priority difference that same user grouping is used resource in each resource collection in the same sub-district.Like this, even use request resource per family in each user grouping of all sub-districts of soft-frequency reuse, then its use priority to same resource collection is different, therefore can determine the resource collection preferred allocation is given which user grouping of which sub-district, and for same sub-district, have when a plurality of at the resource collection of distributing to user grouping, because same user grouping is used the priority difference to resource in each resource collection, therefore can determine which user grouping which resource collection is preferably given, thus the final resource allocation that realizes user in each user grouping of each sub-district.
If the sub-district of soft-frequency reuse is respectively 0～sub-district, sub-district N-1, sub-district k is any sub-district in the sub-district of soft-frequency reuse, and the local resource set is respectively R
0～R
N-1Preferably, for the Cell Center User of one of them sub-district k, to being under the jurisdiction of the resource collection R of this sub-district
K mod NThe priority of using be P
1, to resource collection R
(k+i) mod NThe priority of using be P
1+iFor the Cell Edge User of sub-district k, to being under the jurisdiction of the resource collection R of this sub-district
K mod NThe priority of using be W
1, to resource collection R
(k+i) mod NThe priority of using be W
1+i, 0≤k≤N-1 wherein, 1≤i≤N-1, P
i＜P
I+1, W
i＞W
I+1
Be example with N=3 below, the resource usage policy to the different user grouping is described when resource is used the division of priority and scheduling.
The sub-district of supposing soft-frequency reuse is respectively sub-district 0, sub-district 1 and sub-district 2, and LTE up-link bandwidth is 10MHz, and totally 50 PRB can use, and then whole bandwidth can be divided into 3 resource collections, puts PRB1-PRB17 under resource collection R
0, put PRB18-34 under set R
1, put PRB35-PRB50 under set R
2, stipulate simultaneously that for sub-district k the resource collection that is under the jurisdiction of this sub-district is R
k
Like this, for the Cell Center User of sub-district 0, to being under the jurisdiction of the resource collection R of this sub-district
0The priority of using be P
1, to resource collection R
1The priority of using be P
2, to resource collection R
2The priority of using be P
3For the Cell Edge User of sub-district 0, to being under the jurisdiction of the resource collection R of this sub-district
0The priority of using be W
1, to resource collection R
1The priority of using be W
2, to resource collection R
2The priority of using be W
3
For the Cell Center User of sub-district 1, to being under the jurisdiction of the resource collection R of this sub-district
1The priority of using be P
1, to resource collection R
2The priority of using be P
2, to resource collection R
0The priority of using be P
3For the Cell Edge User of sub-district 1, to being under the jurisdiction of the resource collection R of this sub-district
1The priority of using be W
2, to resource collection R
2The priority of using be W
2, to resource collection R
0The priority of using be W
3
For the Cell Center User of sub-district 2, to being under the jurisdiction of the resource collection R of this sub-district
2The priority of using be P
1, to resource collection R
0The priority of using be P
2, to resource collection R
1The priority of using be P
3For the Cell Edge User of sub-district 2, to being under the jurisdiction of the resource collection R of this sub-district
2The priority of using be W
1, to resource collection R
0The priority of using be W
2, to resource collection R
1The priority of using be W
3
P wherein
1＜P
2＜P
3, W
1＞W
2＞W
3
When being user resource allocation, determine the sub-district and the affiliated user grouping at user place, and then determine this user for resource use priority, how according to the use priority of each user grouping in each sub-district to each resource collection, be user resource allocation, give and use the high user of priority following when same resource distributed to a plurality of user priority allocation, reaching same user has a plurality of resources can divide timing priority allocation resource to use the high principle of priority, allocation rule can be set flexibly, no longer describe in detail here.
The LTE uplink interference mainly is derived from Cell Edge User, Cell Edge User for serious interference, loss of throughput when reducing transmitting power to a certain extent on the unit resource is also not serious, and the PRB number that the each transmission of Cell Edge User can be supported in the LTE system is subject to the rated power of terminal usually, therefore, the power spectral density that reduces edge customer to a certain extent helps UE and adopts bigger bandwidth to transmit, thus for the transfer of data of supporting higher rate provides may.In addition, be positioned near the central user in base station and can not cause too much influence to adjacent Cell Edge User, its power also has residue usually, therefore can obtain higher throughput by suitably promoting transmit power spectral density.
Based on above analysis, in the second embodiment of the present invention, on the basis of first embodiment, also realize better interference coordination effect in conjunction with power adjustment simultaneously based on customer location.It is as follows that the power of the design that present embodiment provides is adjusted strategy:
Determine user's the pairing transmit power spectral density scope of path loss L place data segment, the wherein transmit power spectral density of the corresponding different range of different pieces of information section, and the more little data segment of path loss, corresponding transmit power spectral density is big more; According to the transmit power spectral density scope of determining, determine that the user sends transmit power spectral density that data use and indication to the user.
Preferably, the quantity of different pieces of information section is 3 in the present embodiment, determines user's path loss L place data segment, specifically comprises: with user's path loss L respectively with setting threshold TH
InnerAnd TH
OuterRelatively, TH
Outer＞TH
InnerUsers all in the sub-district can be divided into three set like this, i.e. contribution set in the low contribution set of presence of intercell interference, the presence of intercell interference, the high contribution set of presence of intercell interference; According to comparative result, at L＜TH
InnerThe time, determining L at first data segment, the user belongs to the low contribution set of presence of intercell interference; TH
Inner≤ L≤TH
OuterThe time, determining L at second data segment, the user belongs to contribution set in the presence of intercell interference; At L＞TH
OuterThe time, determining L at the 3rd data segment, the user belongs to the high contribution set of presence of intercell interference.
Therefore, user's path loss L and the transmit power spectral density relation of being inversely proportional in the present embodiment, when initial, when the user is assigned with the Initial Trans spectrum density, as shown in Figure 3,, path loss corresponds to the 3rd data segment greatly if becoming, then according to the indication of base station, to belonging to the UE of the high contribution set of presence of intercell interference, can carry out to a certain degree reduction to transmit power spectral density, to exchange for to the more support of large transmission bandwidth; Correspond to first data segment if path loss diminishes,, to belonging to the low contribution set of presence of intercell interference, can carry out to a certain degree lifting transmit power spectral density then according to the indication of base station; To belonging to the UE of contribution set in the presence of intercell interference, it is constant to keep its original transmitting power spectrum.
After taking the adjustment strategy of above-mentioned power spectral density based on customer location, the target received power spectrum density that is positioned at each regional UE of sub-district as shown in Figure 3, among the figure before the power adjustment slope of ownership goal received power spectrum density for negative be because the part path loss compensation policy that has adopted the LTE standard to support.The data segment of path loss maximum in the present embodiment, promptly minimum emissive power satisfies the base station and correctly receives data demand in the transmit power spectral density scope of the 3rd data segment correspondence.The base station is the specified transmitting power that the bandwidth of user resource allocation and user's transmit power spectral density product is no more than the user in the present embodiment in addition.
The said method of present embodiment is improved existing soft-frequency reuse scheme, proposed a kind of while based on the frequency coordination of priority and the Inter-Cell Interference Coordination scheme of adjusting based on the power of customer location, and the performance of this programme in the LTE up-link assessed by system-level emulation.Simulation result shows, the present invention can cause under the prerequisite of negative effect sector average behavior and Cell Center User performance avoiding as far as possible, brings the significantly lifting of community marginal user performance.
Present embodiment is subjected to the UE that terminal rated power blocks for transmitting power, by making it use more resource, selecting lower power spectral density to reach identical even higher transmission rate.So for to guarantee to use lower MCS grade, more resources to transmit data, present embodiment can be reserved more available resources for each Cell Edge User.
In order to assess the frequency coordination that the present invention proposes+adjust the influence of scheme to systematic function based on the power spectral density of customer location based on priority, emulation statistics by to several system-level indexs such as and edge throughput performances average such as SINR distributes, edge customer is supported PRB number, sector contrasts the present invention program and other scheme.
According to simulation analysis, the present invention program can promote the edge customer throughput up to 19.0% in, give loss that system's average throughput brings only about 3.0%.Adjust later strategy in conjunction with power and can improve edge customer and sector average throughput performance simultaneously, wherein the lifting of Cell Edge User throughput mainly is the increase that comes from the PRB number of edge customer single dispatching office support; In addition, the user terminal very near apart from the base station promoted transmit power spectral density, and the MCS grade of its support can be higher, and data transmission efficiency has obtained further promoting on the unit resource, thus the sector on average the amount of telling make moderate progress than simple frequency coordination.
The present invention also provides a kind of base station of realizing the resource allocation of Inter-Cell Interference Coordination, as shown in Figure 4, comprising: resource division unit 401, be used for number of cells N according to soft-frequency reuse, and Radio Resource is divided into N resource collection; Priority is provided with unit 402, is used to be provided with in each sub-district each user grouping of dividing according to customer location use priority to each resource collection, and different user divides into groups to the use priority difference of same resource collection wherein same the sub-district in; Resource allocation unit 403 is used for being user resource allocation according to the use priority of each user grouping in each sub-district to each resource collection.
Preferably, this base station also comprises: scope determining unit 404, be used for determining user's the pairing transmit power spectral density scope of path loss place data segment, the transmit power spectral density of the corresponding different range of different pieces of information section wherein, and the data segment that path loss is more little, corresponding transmit power spectral density is big more; Determine and indicating member 405, be used for, determine that the user sends transmit power spectral density that data use and indication to the user according to the transmit power spectral density scope of determining.
Preferably, the quantity of different pieces of information section is 3, and described scope determining unit 404 specifically comprises: the threshold value comparing unit, be used for user's path loss L respectively with setting threshold TH
InnerAnd TH
OuterRelatively, TH
Outer＞TH
InnerThe segmentation determining unit is used for according to comparative result, at L＜TH
InnerThe time, determine that L is at first data segment, TH
Inner≤ L≤TH
OuterThe time, determine that L is at second data segment, at L＞TH
OuterThe time, determine that L is at the 3rd data segment.
Preferably, the interior minimum emissive power of the transmit power spectral density scope of the data segment correspondence of path loss maximum satisfies the base station and correctly receives data demand, described resource allocation unit 403, resource bandwidth of being distributed and user's transmit power spectral density product is no more than user's specified transmitting power.
Preferably, the user grouping of dividing according to customer location in the sub-district is specially Cell Center User and Cell Edge User, wherein each resource collection is under the jurisdiction of a sub-district, priority is provided with in the set use priority in unit 402, the Cell Edge User of each sub-district, for the use priority of the resource collection that is under the jurisdiction of this sub-district greater than Cell Center User, for the use priority of the resource collection except that the resource collection that is under the jurisdiction of this sub-district, all less than Cell Center User.
Preferably, priority is provided with in the set use priority in unit 402, the priority difference that the same user grouping of different districts is used resource in the same resource collection, the priority difference that same user grouping is used resource in each resource collection in the same sub-district.
Preferably, priority is provided with unit 402 the use priority specifically is set in the following way: for the Cell Center User of one of them sub-district k, to being under the jurisdiction of the resource collection R of this sub-district
K mod NThe priority of using be P
1, to resource collection R
(k+i) mod NThe priority of using be P
1+iFor the Cell Edge User of sub-district k, to being under the jurisdiction of the resource collection R of this sub-district
K mod NThe priority of using be W
1, to resource collection R
(k+i) mod NThe priority of using be W
1+i, 0≤k≤N-1 wherein, 1≤i≤N-1, P
i＜P
I+1, W
i＞W
I+1
Those skilled in the art should understand that embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt complete hardware embodiment, complete software implementation example or in conjunction with the form of the embodiment of software and hardware aspect.And the present invention can adopt the form that goes up the computer program of implementing in one or more computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) that wherein include computer usable program code.
The present invention is that reference is described according to the flow chart and/or the block diagram of method, equipment (system) and the computer program of the embodiment of the invention.Should understand can be by the flow process in each flow process in computer program instructions realization flow figure and/or the block diagram and/or square frame and flow chart and/or the block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, make the instruction of carrying out by the processor of computer or other programmable data processing device produce to be used for the device of the function that is implemented in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame appointments.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, make the instruction that is stored in this computer-readable memory produce the manufacture that comprises command device, this command device is implemented in the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
These computer program instructions also can be loaded on computer or other programmable data processing device, make on computer or other programmable devices and to carry out the sequence of operations step producing computer implemented processing, thereby the instruction of carrying out on computer or other programmable devices is provided for being implemented in the step of the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
Although described the preferred embodiments of the present invention, in a single day those skilled in the art get the basic creative notion of cicada, then can make other change and modification to these embodiment.So claims are intended to all changes and the modification that are interpreted as comprising preferred embodiment and fall into the scope of the invention.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (14)
1. the resource allocation methods of a base station realization Inter-Cell Interference Coordination is characterized in that, comprising:
According to the number of cells N of soft-frequency reuse, Radio Resource is divided into N resource collection;
Each user grouping of dividing according to customer location use priority to each resource collection is set in each sub-district, and different user divides into groups to the use priority difference of same resource collection wherein same the sub-district in;
According to the use priority of each user grouping in each sub-district, be user resource allocation to each resource collection.
2. the method for claim 1 is characterized in that, also comprises:
Determine user's the pairing transmit power spectral density scope of path loss place data segment, the wherein transmit power spectral density of the corresponding different range of different pieces of information section, and the more little data segment of path loss, corresponding transmit power spectral density is big more;
According to the transmit power spectral density scope of determining, determine that the user sends transmit power spectral density that data use and indication to the user.
3. method as claimed in claim 2 is characterized in that the quantity of different pieces of information section is 3, determines user's path loss place data segment, specifically comprises:
With user's path loss L respectively with setting threshold TH
InnerAnd TH
OuterRelatively, TH
Outer＞TH
Inner
According to comparative result, at L＜TH
InnerThe time, determine that L is at first data segment, TH
Inner≤ L≤TH
OuterThe time, determine that L is at second data segment, at L＞TH
OuterThe time, determine that L is at the 3rd data segment.
4. method as claimed in claim 2, it is characterized in that, minimum emissive power satisfies the base station and correctly receives data demand in the transmit power spectral density scope of the data segment correspondence of path loss maximum, and described base station is the specified transmitting power that the bandwidth of user resource allocation and user's transmit power spectral density product is no more than the user.
5. the method for claim 1, it is characterized in that, the user grouping of dividing according to customer location in the sub-district is specially Cell Center User and Cell Edge User, wherein each resource collection is under the jurisdiction of a sub-district, wherein, the Cell Edge User of each sub-district, for the use priority of the resource collection that is under the jurisdiction of this sub-district greater than Cell Center User, for the use priority of the resource collection except that the resource collection that is under the jurisdiction of this sub-district, all less than Cell Center User.
6. as the arbitrary described method of claim 1～5, it is characterized in that the priority difference that the same user grouping of different districts is used resource in the same resource collection, the priority difference that same user grouping is used resource in each resource collection in the same sub-district.
7. method as claimed in claim 5 is characterized in that, for the Cell Center User of one of them sub-district k, to being under the jurisdiction of the resource collection R of this sub-district
K mod NThe priority of using be P
1, to resource collection R
(k+i) mod NThe priority of using be P
1+iFor the Cell Edge User of sub-district k, to being under the jurisdiction of the resource collection R of this sub-district
K mod NThe priority of using be W
1, to resource collection R
(k+i) mod NThe priority of using be W
1+i, 0≤k≤N-1 wherein, 1≤i≤N-1, P
i＜P
I+1, W
i＞W
I+1
8. a base station of realizing the resource allocation of Inter-Cell Interference Coordination is characterized in that, comprising:
The resource division unit is used for the number of cells N according to soft-frequency reuse, and Radio Resource is divided into N resource collection;
Priority is provided with the unit, is used to be provided with in each sub-district each user grouping of dividing according to customer location use priority to each resource collection, and different user divides into groups to the use priority difference of same resource collection wherein same the sub-district in;
Resource allocation unit is used for being user resource allocation according to the use priority of each user grouping in each sub-district to each resource collection.
9. base station as claimed in claim 8 is characterized in that, also comprises:
The scope determining unit, be used for determining user's the pairing transmit power spectral density scope of path loss place data segment, the wherein transmit power spectral density of the corresponding different range of different pieces of information section, and the more little data segment of path loss, corresponding transmit power spectral density is big more;
Determine and indicating member, be used for, determine that the user sends transmit power spectral density that data use and indication to the user according to the transmit power spectral density scope of determining.
10. base station as claimed in claim 9 is characterized in that, the quantity of different pieces of information section is 3, and described scope determining unit specifically comprises:
The threshold value comparing unit, be used for user's path loss L respectively with setting threshold TH
InnerAnd TH
OuterRelatively, TH
Outer＞TH
Inner
The segmentation determining unit is used for according to comparative result, at L＜TH
InnerThe time, determine that L is at first data segment, TH
Inner≤ L≤TH
OuterThe time, determine that L is at second data segment, at L＞TH
OuterThe time, determine that L is at the 3rd data segment.
11. base station as claimed in claim 9, it is characterized in that, the interior minimum emissive power of the transmit power spectral density scope of the data segment correspondence of path loss maximum satisfies the base station and correctly receives data demand, described resource allocation unit, resource bandwidth of being distributed and user's transmit power spectral density product is no more than user's specified transmitting power.
12. base station as claimed in claim 8, it is characterized in that, the user grouping of dividing according to customer location in the sub-district is specially Cell Center User and Cell Edge User, wherein each resource collection is under the jurisdiction of a sub-district, described priority is provided with in the set use priority in unit, the Cell Edge User of each sub-district, for the use priority of the resource collection that is under the jurisdiction of this sub-district greater than Cell Center User, for the use priority of the resource collection except that the resource collection that is under the jurisdiction of this sub-district, all less than Cell Center User.
13. as the arbitrary described base station of claim 8～12, it is characterized in that, described priority is provided with in the set use priority in unit, the priority difference that the same user grouping of different districts is used resource in the same resource collection, the priority difference that same user grouping is used resource in each resource collection in the same sub-district.
14. base station as claimed in claim 12 is characterized in that, described priority is provided with the unit use priority specifically is set in the following way: for the Cell Center User of one of them sub-district k, to being under the jurisdiction of the resource collection R of this sub-district
K mod NThe priority of using be P
1, to resource collection R
(k+i) mod NThe priority of using be P
1+iFor the Cell Edge User of sub-district k, to being under the jurisdiction of the resource collection R of this sub-district
K mod NThe priority of using be W
1, to resource collection R
(k+i) mod NThe priority of using be W
1+i, 0≤k≤N-1 wherein, 1≤i≤N-1, P
i＜P
I+1, W
i＞W
I+1
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