CN102026390B - 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 residential quarter of system up-link, presence of intercell interference becomes the key point of restriction Cell Edge User transmission rate and service quality (Quality of Service, 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 arranges certain limitation, to coordinate the behavior between a plurality of residential quarters, avoids producing serious interference.According to the difference of coordinating resource, various ICIC can be divided into frequency coordination and power coordination two large classes, its typical scenario is respectively restriction Physical Resource Block (Physical Resource Block, PRB) the Partial Power control strategy that soft-frequency reuse (Soft Frequency Reuse, the SFR) strategy that uses 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 Partial Power control strategy refers to, in order to guarantee the message transmission rate of edge customer, Cell Edge User is not limiting transmitting power on corresponding frequency band usually, and Cell Center User need to limit its transmitting power.
Above-mentioned ICIC technology is easier to implement, and can play preferably interference mitigation effect.Yet for the soft-frequency reuse scheme, because Cell Edge User can use at most the resource of whole frequency range interior 1/3, so the availability of frequency spectrum is low, and edge user's resource limitation can bring the loss of frequency selectivity gain and multi-user diversity gain simultaneously.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 make transmitting power not be higher than specified transmitting power on the density of Initial Trans spectrum.When the resource bandwidth of distributing was larger, having reduced at last the rear transmit power spectral density that adopts 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 for promoting signal to noise ratio usually.This also is above-mentioned soft-frequency reuse scheme for the improvement of ascending edge throughput not as the significant reason of descending effect.
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 coordination or 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 be the larger bandwidth of user assignment, then the transmitting power of UE will be subject 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 is set in each residential quarter to the use priority of each resource collection, wherein same the residential quarter in the different user grouping to the use priority difference of same resource collection;
According to the use priority of each user grouping in each residential quarter to each resource collection, be user resource allocation;
Determine user's the corresponding 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 less data segment of path loss, corresponding transmit power spectral density is larger;
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.
The present invention also provides a kind of base station of realizing the resource distribution 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;
The priority setting unit is used for arranging each user grouping of dividing according to customer location each residential quarter in to the use priority of each resource collection, and wherein different user divides into groups to the use priority difference of same resource collection same the residential quarter in;
Resource allocation unit is used for according to the use priority of each user grouping in each residential quarter to each resource collection, is user resource allocation;
The scope determining unit, be used for determining user's the corresponding 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 less data segment of path loss, corresponding transmit power spectral density is larger;
Determine and indicating member, be used for 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.
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 residential quarter, improve the availability of frequency spectrum, can bring simultaneously the raising of frequency selectivity gain and multi-user diversity gain.
Description of drawings
Fig. 1 is that the soft-frequency reuse resource is distributed schematic diagram;
Fig. 2 is the resource allocation methods flow chart that coordinating district interference is realized in 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 distribution 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 to 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 residential quarter, 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 residential quarters, is generally 3～7.
Step S202 arranges in each residential quarter each user grouping of dividing according to customer location to the use priority of each resource collection, wherein same the residential quarter in the different user grouping to the use priority difference of same resource collection;
For user in each residential quarter, can be belonged to different user grouping according to the customer location difference, a residential quarter is divided at least two user grouping, and preferably, the user grouping that residential quarter 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 residential quarter 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 concept 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 residential quarter, improve the availability of frequency spectrum, can bring simultaneously the raising of frequency selectivity gain and multi-user diversity gain.
The user grouping of dividing according to customer location in the first embodiment of the invention small area is specially Cell Center User and Cell Edge User, wherein each resource collection is under the jurisdiction of a residential quarter, wherein, the Cell Edge User of each residential quarter, for the use priority of the resource collection that is under the jurisdiction of this residential quarter greater than Cell Center User, for the use priority of the resource collection except the resource collection that is under the jurisdiction of this residential quarter, 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 residential quarter 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 separately resource of residential quarter, guarantee that to a certain extent the resource of Cell Edge User is used.
Preferably, the priority that the same user grouping of different districts is used resource in the same resource collection is different, and the priority that same user grouping is used resource in each resource collection in the same residential quarter is different.Like this, even use per family request resource in each user grouping of all residential quarters of soft-frequency reuse, then its use priority to same resource collection is different, which which therefore can determine the user grouping of resource collection preferred allocation to residential quarter, and for same residential quarter, have when a plurality of at the resource collection of distributing to user grouping, because same user grouping uses priority different to resource in each resource collection, therefore can determine which user grouping which resource collection is preferably given, thereby final the realization distributed to the resource of user in each user grouping of each residential quarter.
If the residential quarter of soft-frequency reuse is respectively 0～residential quarter, residential quarter N-1, residential quarter k is any residential quarter in the residential quarter 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 residential quarter k, to being under the jurisdiction of the resource collection R of this residential quarter
KmodNThe priority of using be P
1, to resource collection R
(k+i) modNThe priority of using be P
1+iFor the Cell Edge User of residential quarter k, to being under the jurisdiction of the resource collection R of this residential quarter
KmodNThe priority of using be W
1, to resource collection R
(k+i) modNThe priority of using be W
1+i, 0≤k≤N-1 wherein, 1≤i≤N-1, P
i＜P
I+1, W
iW
I+1
The below is take N=3 as example, and the resource usage policy to the different user grouping is described when resource is used the division of priority and scheduling.
The residential quarter of supposing soft-frequency reuse is respectively residential quarter 0, residential quarter 1 and residential quarter 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, to stipulate simultaneously for residential quarter k, the resource collection that is under the jurisdiction of this residential quarter is R
k
Like this, for the Cell Center User of residential quarter 0, to being under the jurisdiction of the resource collection R of this residential quarter
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 residential quarter 0, to being under the jurisdiction of the resource collection R of this residential quarter
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 residential quarter 1, to being under the jurisdiction of the resource collection R of this residential quarter
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 residential quarter 1, to being under the jurisdiction of the resource collection R of this residential quarter
1The priority of using be W
1, 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 residential quarter 2, to being under the jurisdiction of the resource collection R of this residential quarter
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 residential quarter 2, to being under the jurisdiction of the resource collection R of this residential quarter
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 residential quarter 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 residential quarter to each resource collection, be user resource allocation, follow when same resource distributed to a plurality of user priority allocation to using the high user of priority, 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 small area edge customer of LTE system can be supported is subject to the rated power of terminal usually, therefore, the power spectral density that reduces to a certain extent edge customer is conducive to UE and adopts larger 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 the adjacent cell edge customer, 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, also realize better interference coordination effect in conjunction with the power adjustment based on customer location simultaneously on the basis of the first embodiment.It is as follows that the power of the design that the present embodiment provides is adjusted strategy:
Determine user's the corresponding 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 less data segment of path loss, corresponding transmit power spectral density is larger; 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
OuterTH
Inner, users all in the residential quarter 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 the 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 the 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, if becoming, path loss corresponds to greatly the 3rd data segment, 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 the more support of large transmission bandwidth; Correspond to the first data segment if path loss diminishes, then according to the indication of base station, to belonging to the low contribution set of presence of intercell interference, can carry out to a certain degree lifting to transmit power spectral density; To belonging to the UE of contribution set in the presence of intercell interference, keep its original transmitting power spectrum constant.
After taking the adjustment strategy of above-mentioned power spectral density based on customer location, be positioned at the target received power spectrum density of each regional UE of residential quarter as shown in Figure 3, the slope of the front ownership goal received power spectrum density of power adjustment is because the part path loss compensation policy that has adopted the LTE standard to support for bearing among the figure.Minimum emissive power satisfies the correct receive data requirement in base station in the data segment of path loss maximum in the present embodiment, the transmit power spectral density scope that namely the 3rd data segment is corresponding.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 the present embodiment is improved existing soft-frequency reuse scheme, proposed a kind of frequency coordination of while Priority-based and the Inter-Cell Interference Coordination scheme of adjusting based on the power of customer location, and by system-level emulation the performance of this programme in the LTE up-link assessed.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.
The present embodiment is subject to the UE that terminal rated power blocks for transmitting power, reaches identical even higher transmission rate by making it with more resource, the lower power spectral density of selection.Therefore for guaranteeing to come the transmission of data with lower MCS grade, more resource, the present embodiment can be reserved more available resources for each Cell Edge User.
For the frequency coordination of assessing the Priority-based that the present invention proposes+adjust scheme to the impact of systematic function based on the power spectral density of customer location, 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 simultaneously edge customer and sector average throughput performance, 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 distribution of Inter-Cell Interference Coordination, as shown in Figure 4, comprising: resource division unit 401, be used for the number of cells N according to soft-frequency reuse, and Radio Resource is divided into N resource collection; Priority setting unit 402 is used for arranging each user grouping of dividing according to customer location each residential quarter in to the use priority of each resource collection, and wherein different user divides into groups to the use priority difference of same resource collection same the residential quarter in; Resource allocation unit 403 is used for according to the use priority of each user grouping in each residential quarter to each resource collection, is user resource allocation.
Preferably, this base station also comprises: scope determining unit 404, be used for determining user's the corresponding 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 less, corresponding transmit power spectral density is larger; Determine and indicating member 405, be used for 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, 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
OuterTH
InnerThe segmentation determining unit is used for according to comparative result, at L＜TH
InnerThe time, determine that L is at the first data segment, TH
Inner≤ L≤TH
OuterThe time, determine that L is at the 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 that the data segment of path loss maximum is corresponding satisfies the correct receive data requirement in base station, described resource allocation unit 403, the resource bandwidth of distributing 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 residential quarter is specially Cell Center User and Cell Edge User, wherein each resource collection is under the jurisdiction of a residential quarter, in the set use priority of priority setting unit 402, the Cell Edge User of each residential quarter, for the use priority of the resource collection that is under the jurisdiction of this residential quarter greater than Cell Center User, for the use priority of the resource collection except the resource collection that is under the jurisdiction of this residential quarter, all less than Cell Center User.
Preferably, in the set use priority of priority setting unit 402, the priority that the same user grouping of different districts is used resource in the same resource collection is different, and the priority that same user grouping is used resource in each resource collection in the same residential quarter is different.
Preferably, the concrete setup and use priority in the following way of priority setting unit 402: for the Cell Center User of one of them residential quarter k, to being under the jurisdiction of the resource collection R of this residential quarter
KmodNThe priority of using be P
1, to resource collection R
(k+i) modNThe priority of using be P
1+iFor the Cell Edge User of residential quarter k, to being under the jurisdiction of the resource collection R of this residential quarter
KmodNThe priority of using be W
1, to resource collection R
(k+i) modNThe priority of using be W
1+i, 0≤k≤N-1 wherein, 1≤i≤N-1, P
i＜P
I+1, W
iW
I+1
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt complete hardware implementation example, complete implement software example or in conjunction with the form of the embodiment of software and hardware aspect.And the present invention can adopt the form of 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 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 producing a machine, so that the instruction of carrying out by the processor of computer or other programmable data processing device produces the device that is used for realizing in the function of 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, so that the instruction that is stored in this computer-readable memory produces the manufacture that comprises command device, this command device is realized 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, so that carry out the sequence of operations step producing computer implemented processing at computer or other programmable devices, thereby be provided for realizing 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 in the instruction that computer or other programmable devices are carried out.
Although described the preferred embodiments of the present invention, in a single day those skilled in the art get the basic creative concept 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 (12)
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 is set in each residential quarter to the use priority of each resource collection, wherein same the residential quarter in the different user grouping to the use priority difference of same resource collection;
According to the use priority of each user grouping in each residential quarter to each resource collection, be user resource allocation;
Determine user's the corresponding 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 less data segment of path loss, corresponding transmit power spectral density is larger;
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.
2. the method for claim 1 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
OuterTH
Inner
According to comparative result, at L＜TH
InnerThe time, determine that L is at the first data segment, TH
Inner≤ L≤TH
OuterThe time, determine that L is at the second data segment, at L〉TH
OuterThe time, determine that L is at the 3rd data segment.
3. the method for claim 1, it is characterized in that, minimum emissive power satisfies the correct receive data requirement in base station in transmit power spectral density scope corresponding to the data segment 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.
4. the method for claim 1, it is characterized in that, the user grouping of dividing according to customer location in the residential quarter is specially Cell Center User and Cell Edge User, wherein each resource collection is under the jurisdiction of a residential quarter, wherein, the Cell Edge User of each residential quarter, for the use priority of the resource collection that is under the jurisdiction of this residential quarter greater than Cell Center User, for the use priority of the resource collection except the resource collection that is under the jurisdiction of this residential quarter, all less than Cell Center User.
5. such as the arbitrary described method of claim 1～4, it is characterized in that, the priority that the same user grouping of different districts is used resource in the same resource collection is different, and the priority that same user grouping is used resource in each resource collection in the same residential quarter is different.
6. method as claimed in claim 4 is characterized in that, for the Cell Center User of one of them residential quarter k, to being under the jurisdiction of the resource collection R of this residential quarter
KmodNThe priority of using be P
1, to resource collection R
(k+i) modNThe priority of using be P
1+iFor the Cell Edge User of residential quarter k, to being under the jurisdiction of the resource collection R of this residential quarter
KmodNThe priority of using be W
1, to resource collection R
(k+i) modNThe priority of using be W
1+i, 0≤k≤N-1 wherein, 1≤i≤N-1, P
i＜P
I+1, W
iW
I+1
7. a base station of realizing the resource distribution 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;
The priority setting unit is used for arranging each user grouping of dividing according to customer location each residential quarter in to the use priority of each resource collection, and wherein different user divides into groups to the use priority difference of same resource collection same the residential quarter in;
Resource allocation unit is used for according to the use priority of each user grouping in each residential quarter to each resource collection, is user resource allocation;
The scope determining unit, be used for determining user's the corresponding 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 less data segment of path loss, corresponding transmit power spectral density is larger;
Determine and indicating member, be used for 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.
8. base station as claimed in claim 7 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
OuterTH
Inner
The segmentation determining unit is used for according to comparative result, at L＜TH
InnerThe time, determine that L is at the first data segment, TH
Inner≤ L≤TH
OuterThe time, determine that L is at the second data segment, at L〉TH
OuterThe time, determine that L is at the 3rd data segment.
9. base station as claimed in claim 8, it is characterized in that, the interior minimum emissive power of the transmit power spectral density scope that the data segment of path loss maximum is corresponding satisfies the correct receive data requirement in base station, described resource allocation unit, the resource bandwidth of distributing and user's transmit power spectral density product is no more than user's specified transmitting power.
10. base station as claimed in claim 7, it is characterized in that, the user grouping of dividing according to customer location in the residential quarter is specially Cell Center User and Cell Edge User, wherein each resource collection is under the jurisdiction of a residential quarter, in the set use priority of described priority setting unit, the Cell Edge User of each residential quarter, for the use priority of the resource collection that is under the jurisdiction of this residential quarter greater than Cell Center User, for the use priority of the resource collection except the resource collection that is under the jurisdiction of this residential quarter, all less than Cell Center User.
11. such as the arbitrary described base station of claim 7～10, it is characterized in that, in the set use priority of described priority setting unit, the priority that the same user grouping of different districts is used resource in the same resource collection is different, and the priority that same user grouping is used resource in each resource collection in the same residential quarter is different.
12. base station as claimed in claim 11 is characterized in that, described priority setting unit is setup and use priority in the following way specifically: for the Cell Center User of one of them residential quarter k, to being under the jurisdiction of the resource collection R of this residential quarter
KmodNThe priority of using be P
1, to resource collection R
(k+i) modNThe priority of using be P
1+iFor the Cell Edge User of residential quarter k, to being under the jurisdiction of the resource collection R of this residential quarter
KmodNThe priority of using be W
1, to resource collection R
(k+i) modNThe priority of using be W
1+i, 0≤k≤N-1 wherein, 1≤i≤N-1, P
i＜P
I+1, W
iW
I+1
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