CN102118857A - Channel allocation method and device - Google Patents
Channel allocation method and device Download PDFInfo
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- CN102118857A CN102118857A CN2009102175067A CN200910217506A CN102118857A CN 102118857 A CN102118857 A CN 102118857A CN 2009102175067 A CN2009102175067 A CN 2009102175067A CN 200910217506 A CN200910217506 A CN 200910217506A CN 102118857 A CN102118857 A CN 102118857A
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Abstract
The invention discloses a channel allocation method and device. The method comprises the following steps: determining usable channels in a cell cluster, and allocating the determined channels to base station coverage cells or sectors contained in the cell cluster, wherein if the same channels are allocated to the different base station coverage cells or sectors, the use priorities of the same channels in the different base station coverage cells or sectors are different. By adopting the method and device provided by the invention, compared with the prior art, the internal interference of the system is reduced and the system performance is improved.
Description
Technical field
The present invention relates to the frequency planning technical field in the communication technical field, relate in particular to a kind of method for channel allocation and device.
Background technology
The radio-ray path loss characteristic that is based on channeling realizes that its unit is a carrier wave.Distance is enough far away between two base stations, and the carrier frequency that is used for a base station so can be multiplexing by the carrier frequency of another base station, thereby improved spectrum efficiency.The zone that each base station covers is called cellular cell, uses the cellular cell of same frequency to be called co-frequency cell.Distance between these co-frequency cells is called frequency reuse distance.In design, frequency reuse distance must be enough far away, so that the cochannel interference level is enough low, thereby guarantees covering quality.
The base unit of frequency planning is a cell cluster, bunch being that unit carries out channeling in the overlay area.Bunch be the set of one group of several sub-district, whole available spectrum resources have been used in these several sub-districts, but each cell operation frequency is different, and each sub-district distribution mode and frequency allocation plan have determined frequency reuse mode in bunch.
At present; for OFDM/OFDMA (Orthogonal Frequency Division Multiplexing; OFDM/Orthogonal Frequency Division Multiple Access; orthogonal frequency division multiplexing multiple access) system; when carrying out the channel allocation of frequency planning; main employing channeling is 1 mode; be that each identical spectral channel is all used in each sub-district that a cell cluster of system comprises; and for the use of each spectral channel or adopt identical order; use at random, so, serious channel overlap takes place through regular meeting; increase annoyance level, caused systematic function to descend.
Summary of the invention
The embodiment of the invention provides a kind of method for channel allocation and device, compared to existing technology, reduces internal system and disturbs, and then improve systematic function.
The embodiment of the invention provides a kind of method for channel allocation, comprising:
Determine spendable each channel in the cell cluster;
Each base station coverage cell or each sector that each channel allocation of determining is comprised to cell cluster, and when in each channel, having same channel for different base station coverage cell or sector distribution, the use priority difference of this same channel in different base station coverage cell or sector.
The embodiment of the invention also provides a kind of channel dividing arrangement, comprising:
Determining unit is used to determine spendable each channel in the cell cluster;
Allocation units, each base station coverage cell or each sector that each channel allocation that is used for determining comprises to cell cluster; And when having same channel in each channel that distributes for different base station coverage cell or sector, this same channel is different with use priority in the sector in the different base station coverage cell.
In the method that the embodiment of the invention provides, in determining cell cluster behind spendable each channel, each base station coverage cell or each sector that each channel allocation of determining is comprised to cell cluster; And satisfy when in each channel, having same channel the use priority difference of this same channel in different base station coverage cell or sector for different base station coverage cell or sector distribution.So, when each base station coverage cell or each sector in the cell cluster utilize the channel that has distributed to carry out service application, can enable channel according to the use priority of channel, use the high channel of priority preferentially to enable, and for same channel, because its use priority difference in each channel that is the distribution of different base station coverage cell or sector, therefore, the order that channel is enabled according to the current business amount in each base station coverage cell or each sector is all inequality, then compared to existing technology, reduced the probability that serious channel overlap takes place between the neighbor cell to a certain extent, also just reduced the internal system interference, and then improved systematic function.
Description of drawings
The flow chart of the method for channel allocation that Fig. 1 provides for the embodiment of the invention;
Fig. 2 is provided with pattern diagram for system cell in the embodiment of the invention;
Fig. 3 is the schematic diagram of 1 channel of every base station assigns in the embodiment of the invention;
Fig. 4 is the schematic diagram of 2 channels of every base station assigns in the embodiment of the invention;
Fig. 5 is the schematic diagram of 3 channels of every base station assigns in the embodiment of the invention;
Fig. 6 is the schematic diagram of 9 channels of every base station assigns in the embodiment of the invention;
Fig. 7 is for distributing the schematic diagram of 1 group of subchannel for every sector in the embodiment of the invention;
Fig. 8 is for distributing the schematic diagram of 2 groups of subchannels for every sector in the embodiment of the invention;
Fig. 9 is for distributing the schematic diagram of 4 groups of subchannels for every sector in the embodiment of the invention;
Figure 10 is the groups of subchannels that every sector is distributed in the embodiment of the invention and takies the situation schematic diagram;
Figure 11 uses the schematic diagram of one group of groups of subchannels for heavy traffic sector, same base station in the embodiment of the invention to an adjacent low traffic sector temporarily;
Figure 12 uses the schematic diagram of one group of subchannel respectively temporarily to two adjacent low traffic sectors for heavy traffic sector, same base station in the embodiment of the invention;
When Figure 13 all uses one group of groups of subchannels for each sector, base station in the embodiment of the invention, the distribution schematic diagram of groups of subchannels coverage;
When Figure 14 all uses two groups of groups of subchannels for each sector, base station in the embodiment of the invention, the distribution schematic diagram of groups of subchannels coverage;
When Figure 15 all uses three groups of groups of subchannels for each sector, base station in the embodiment of the invention, the distribution schematic diagram of groups of subchannels coverage;
When Figure 16 all uses four groups of groups of subchannels for each sector, base station in the embodiment of the invention, the distribution schematic diagram of groups of subchannels coverage;
The structural representation of the channel dividing arrangement that Figure 17 provides for the embodiment of the invention.
Embodiment
The embodiment of the invention provides a kind of method for channel allocation, as shown in Figure 1, comprising:
Step S101, determine spendable each channel in the cell cluster.
Each base station coverage cell or each sector that step S102, each channel allocation that will determine comprise to cell cluster, and when in each channel, having same channel for different base station coverage cell or sector distribution, the use priority difference of this same channel in different base station coverage cell or sector.
Among the above-mentioned steps S102, can use each channel of determining, behind each the base station coverage cell allocated channel that comprises for cell cluster (for convenience of description, promptly be expressed as base station coverage cell allocated channel for the base station assigns channel in the subsequent descriptions), no longer carry out the division of channel for each sector that same base station comprises, all use to be the channel of this base station assigns; Can directly be unit also, use each channel determine, each the sector allocated channel that comprises for cell cluster with the sector.
Preferable, for the OFDM/OFDMA system, because its each channel has also been divided the experimental process channel, so, the experimental process channel of a channel distribution can be formed the experimental process channel group, and each channel of determining in use, behind each the base station assigns channel that comprises for cell cluster, each groups of subchannels of distributing to the channel of each base station can also be distributed to each sector that this base station comprises.
The said method that the embodiment of the invention provides can be applicable to the OFDM/OFDMA system, also can be applicable to other and allows interior each sub-district of same cell cluster to carry out the system of channel multiplexing.
Below in conjunction with accompanying drawing, be example with the OFDM/OFDMA system, the method that the embodiment of the invention is provided is described in detail.
In the embodiment of the invention, with system cell shown in Figure 2 pattern being set is example, comprises 4 cell clusters, is designated as cell cluster A, cell cluster B, cell cluster C and cell cluster D respectively; Each cell cluster comprises 4 base stations, is designated as B respectively
1, B
2, B
3And B
4, the area dividing that each base station covers is 3 sectors, is designated as S respectively
I, 1, S
I, 2, S
I, 3(1≤i≤4), and spendable channel quantity is assumed to be 9 in the cell cluster.
Above-mentioned steps S102 in the embodiment of the invention, preferable, can distribute all channels of determining for each base station or sector that cell cluster comprises;
Preferable, be specifically as follows: each channel that will determine circulates in order and distributes to each base station or sector successively, and give the each distribution in each base station or sector a channel, till having distributed all channels for each base station or sector, that is to say after all channels distribute once in order, begin to continue to distribute in order from first channel again; Wherein, when the current channel that should distribute has been distributed to current base station or current sector, give current base station or current sector with the next channel allocation of the current channel that should distribute; And for each base station or sector, the use priority of the channel that distributes is higher than the use priority of the channel that distributes the back earlier.
Think each base station assigns channel that cell cluster comprises below, it is example that each groups of subchannels that will distribute to the channel of each base station is again distributed to each sector that this base station comprises, this is described in detail.
The distribution of the 1st and the 2nd channel is carried out in each base station in the cell cluster, and its use priority is set.
For the 1st of each base station assigns and the 2nd channel, each channel is numbered, be respectively channel 1, channel 2 ..., channel 9.Above-mentioned channel is distributed according to numbering, and the result is as shown in table 1:
Table 1: the 1st and the 2nd channel assignment table
| The base station | B1 | B2 | B3 | B4 |
| Channel | 1/5 | 2/6 | 3/7 | 4/8 |
As seen, be the separate channel of each base station assigns from table 1, the 1st channel of same base station and the channel number of the 2nd channel differ 4, and it is the highest to set the use priority of the 1st channel of this sub-distribution, and the use priority of the 2nd channel is taken second place.The distribution schematic diagram of channel respectively as shown in Figure 3 and Figure 4.
For carrying out the distribution of the 3rd channel in each base station in the cell cluster, and its priority is set.
Distribution method is:
Table 2: the 3rd channel assignment table
| The base station | B1 | B2 | B3 | B4 |
| Channel | 1/5/9 | 2/6/1 | 3/7/2 | 4/8/3 |
From table 2, as seen, at first the channel different with each base station in cell cluster allocated channel distributed to each base station successively, as channel 9 is distributed to base station B
1As its 3rd channel; If all channel had all distributed once, then B
1The 3rd channel be B
4The 1st channel, B
iThe 3rd channel be B
I-1The 1st channel, wherein, 1＜i≤4.
Because the 3rd channel may be the secondary multiplexing of channel in this cell cluster that had distributed, multiplex distance is lower than the 1st and the 2nd channel, therefore it is set uses priority to be lower than the 2nd channel.The distribution schematic diagram of channel as shown in Figure 5.
For carrying out the distribution of 4-9 channel in each base station in the cell cluster, and it is set uses priority.
Distribution method is:
Table 3: 4-9 channel assignment table
| The base station | B1 | B2 | B3 | B4 |
| Channel | 1/5/9/4/8/3/7/2/6 | 2/6/1/5/9/4/8/3/7 | 3/7/2/6/1/5/9/4/8 | 4/8/3/7/2/6/1/5/9 |
From table 3 as seen, B
14-9 channel be respectively B
41-8 channel, B
i4-9 channel decibel be B
I-12-9 channel, wherein, 1＜i≤4.
Because 4-9 channel is multiplexing once more in this cell cluster of the channel that distributed, multiplex distance is lower than the 1st and the 2nd channel, therefore it is set uses priority to be lower than the 3rd channel, promptly the use priority of 1-9 channel having distributed of each base station reduces successively.
So far, 9 channel allocation of setting finish, and there are 9 channels each base station, the channel allocation schematic diagram of each base station as shown in Figure 6, each channel is separated with "/" by using prioritization in the base station.
According to above-mentioned method for channel allocation is in the cell cluster behind each base station assigns channel, though 9 channels of each base station assigns are identical, and the use priority orders difference of 9 channels of each base station.If each channel in each base station does not use order, completely random is used, and then serious channel overlap can take place, and has increased annoyance level.And after having introduced use priority, can realize that extent for multiplexing changes with the capacity dynamic change, reduce annoyance level, and then improved systematic function.
In the embodiment of the invention, for the OFDM/OFDMA system, the frequency spectrum resource of a channel can also be divided into each groups of subchannels, the product of the number of sectors S that the quantity of groups of subchannels can comprise for base station number N in the cell cluster and each base station, for example, divide 12 groups of groups of subchannels, be respectively groups of subchannels 1, groups of subchannels 2 ..., groups of subchannels 12, and each sector that each base station comprises carried out the distribution of groups of subchannels.
Preferable, for the sector of the same numbering of different base station, for it distributes identical experimental process channel group in each groups of subchannels of same channel; And in the experimental process channel group that each sector that is the same numbering of different base station is distributed, the use priority difference of same groups of subchannels; And, be the groups of subchannels difference of the same channel of its distribution for the sector of the difference of same base numbering.
For the distribution of above-mentioned groups of subchannels, the embodiment of the invention provides a kind of concrete mode as follows:
For a channel, for distributing the 1st group of groups of subchannels in each sector, each base station in the cell cluster, and it is set uses priority.
Above-mentioned groups of subchannels is distributed according to numbering, and the result is as shown in table 4:
Table 4: the allocation table of the 1st group of groups of subchannels
As seen, distribute the 1st group of groups of subchannels for each sector in the cell cluster from table 4, groups of subchannels does not all repeat between each sector, and groups of subchannels between each sector of same base station numbering differs 4, and the priority of using of setting each groups of subchannels of this sub-distribution is the superlative degree.The distribution schematic diagram of groups of subchannels as shown in Figure 7.
For a channel, for distributing the 2nd group of groups of subchannels in each sector, each base station in the cell cluster, and it is set uses priority.
Distribution method is:
Table 5: the 2nd group of groups of subchannels allocation table
As seen, the 2nd group of groups of subchannels is the secondary multiplexing of the 1st group of groups of subchannels in this cell cluster from table 5, and multiplex distance is lower than the 1st group of groups of subchannels, therefore it is set uses priority to be lower than after the 1st group of groups of subchannels.The distribution schematic diagram of groups of subchannels as shown in Figure 8, groups of subchannels is separated with "/" by using prioritization in the sector.
For a channel, for distributing the 3rd and the 4th group of groups of subchannels in each sector, each base station in the cell cluster, and it is set uses priority.
Distribution method is:
Table 6: the 3rd group and the 4th group of groups of subchannels allocation table
From table 6 as seen, the 3rd group and the 4th group of groups of subchannels are multiplexing once more in this cell cluster of the 1st group and the 2nd group of groups of subchannels, multiplex distance is lower than the 1st group and the 2nd group of groups of subchannels, the use priority that therefore the 3rd group of groups of subchannels be set is lower than the 2nd group of groups of subchannels, and the 4th group of groups of subchannels uses priority to be lower than the 3rd group of groups of subchannels.
So far, for a channel, 12 groups of groups of subchannels of division assign, and there are 4 groups of groups of subchannels each sector, and the groups of subchannels of each sector is distributed schematic diagram as shown in Figure 9, and each groups of subchannels is separated with "/" by using prioritization in the sector.
According to above-mentioned groups of subchannels distribution method for a channel is in the cell cluster after each sector allocated sub-channels group of each base station, and 4 groups of groups of subchannels that same numbering sector, each base station is distributed are identical, but uses the priority difference.When adopting single channel for system, if each groups of subchannels in the same sector is not used order, completely random is used, and it is overlapping that serious groups of subchannels then can take place, and increased annoyance level.And, reduced annoyance level, and then improve systematic function owing in the above-mentioned distribution method, introduced use priority, thereby can realize that extent for multiplexing changes with the capacity dynamic change.
Based on above-mentioned groups of subchannels distribution method for a channel, to each channel, carry out groups of subchannels for each sector, each base station in the cell cluster and distribute, the result is as shown in table 7:
Table 7: channel and groups of subchannels allocation table
From table 7 as seen, 4 groups of groups of subchannels that the groups of subchannels of distributing for every sector, every base station comprises for each channel, be every sector and distributed 36 groups of groups of subchannels, and the use priority between 36 groups of groups of subchannels is all inequality, the use priority of respectively organizing subchannel of using the high channel of priority to comprise, all be higher than the use priority of respectively organizing subchannel of using the low channel of priority to comprise, the use priority of each groups of subchannels that same channel comprises reduces successively by the 1st group the-the 4th group the priority that uses in order.
Carrying out when professional, preferentially enable and use the high groups of subchannels of priority, can be following dual mode for the use order of each subchannel in the same groups of subchannels: use at random; Or according to using in order of setting.
In the frequency planning of OFDMA system, by above-mentioned groups of subchannels in channel allocation and the channel is distributed and the use prioritization, make the identical probability of carrier frequency that in different sectors, uses greatly reduce, can effectively reduce the co-channel interference degree, both adapt to the demand that traffic carrying capacity changes, and can guarantee covering quality again.
In the above embodiment of the present invention, be with base station number in the cell cluster be 4, each sector of base station quantity is 3, the channel quantity set is 9 to be example, this method can be applied to that the base station number is that N, sector number are that S, the number of channel are the frequency planning of the OFDMA system of M in the arbitrary cells bunch.What need explanation a bit is: the base station is carried out channel allocation and need repeatedly be repeated in to cell cluster, till the number of channel of distributing in each base station is M; The distribution of carrying out groups of subchannels in to cell cluster between each sector, base station need repeatedly repeat, till the groups of subchannels number that distributes in each sector is N, and newly assigned groups of subchannels is to determine like this in the sector: when the groups of subchannels number that has distributed in each sector of each base station is 0, for distributing one group of mutually different groups of subchannels respectively in each sector of each base station; When the groups of subchannels number that has distributed in each sector of each base station greater than 0 and during less than N, distribute as follows: (each sector among 1≤i≤N) is multiplexing h base station (1≤h≤N respectively in the i base station, h ≠ i, and h base station subchannels group never is multiplexed to the i base station) sector of the identical numbering groups of subchannels of having distributed.Prioritization between newly multiplexing groups of subchannels is constant, but priority comes after those groups of subchannels of having distributed.Divide timing carrying out groups of subchannels, repeat with the groups of subchannels of having distributed, then no longer this groups of subchannels is joined in the groups of subchannels of this time distributing to the sector if run into newly assigned groups of subchannels.
Explanation a bit again: among other embodiment, if the base station number is that N, sector number are in the OFDMA system of S in any cell cluster, number of subchannels is X, be designated as SC1, SC2 ..., SCX is divided into N * S group with X subchannel, and then every group of interior number of subchannels L of groups of subchannels is
Expression is not more than the maximum integer of x, according to 1,2 ..., N * S carries out the groups of subchannels numbering, groups of subchannels i={SC (i-1} * L+1, SC (i-1} * L+2 ..., SCi * L}, (1≤i≤N * S).At this moment, also have X-L * N * S subchannel not to be assigned in the groups of subchannels, these subchannels can all join in last group groups of subchannels, or are used for the dilatation of heavy traffic base station, indoor covering or other purposes.
In above-mentioned frequency planning method, can also increase other householder methods further, make that the scope of application of this frequency planning method is more extensive, better effects if.
Groups of subchannels uses (with base station B temporarily between each sector, same base station
1Be example):
As shown in figure 10, when certain sector of base station 1 traffic carrying capacity is big, 2 groups of groups of subchannels are used in sector 1, groups of subchannels is numbered: 1/2, this moment, the traffic carrying capacity of sector 2 and sector 3 was less, only use 1 group of groups of subchannels, wherein sector 2 is used and is numbered 5 groups of subchannels, and sector 3 is used and is numbered 9 groups of subchannels.
Traffic carrying capacity when sector 1 increases gradually, and is not obvious if other two sector traffic carrying capacitys change when needing to increase the 3rd group of groups of subchannels, according to above-mentioned planing method, should enable the 3rd priority groups of subchannels 3.But in view of the groups of subchannels 6 and 10 of the 2nd priority in sector 2 and the sector 3 all is not used, and the annoyance level that uses the groups of subchannels of the 2nd priority to bring will be lower than and uses the 3rd priority groups of subchannels.Thereby the 2nd priority idle sub-channels group 6 can be used to sector 2 in sector 1 temporarily at this moment, and this moment, the groups of subchannels of this base station was distributed schematic diagram as shown in figure 11.
Traffic carrying capacity when sector 1 continues to increase, when needing to increase the 4th group of groups of subchannels, if other two sector traffic carrying capacitys still change not obvious, then this moment, the 2nd priority idle sub-channels group 10 can be used to sector 3 in sector 1 temporarily, and this moment, the groups of subchannels of this base station was distributed schematic diagram as shown in figure 12.
Describe and to know according to above-mentioned implementation method, the introducing of groups of subchannels priority has realized that reusing degree is with the capacity dynamic change, adapted to the dynamic change of network capacity, the interim borrowing method of groups of subchannels has then strengthened capacity adaptive capacity pockety between different sectors in the base station, and the adaptive capacity of the professional acute variation in sector.
The dynamic assignment of groups of subchannels coverage is (with base station B
1Be example):
Because reusing degree difference, the annoyance level of different priorities groups of subchannels are also different in each sector.Thereby, can also carry out dynamic assignment to the groups of subchannels coverage in order to improve the multiplex distance of low priority groups of subchannels.
Count n and apart from the distance of base station according to the groups of subchannels of using in this sector, this sector can be divided into this sector reality at n identical strip region of the groups of subchannels quantity of usefulness, and ordering from high to low according to priority, distribute the overlay area successively from outside to inside, the outer collar region of the groups of subchannels coverage sector of high priority, the groups of subchannels coverage sector inner circle area of low priority.The multiplex distance of low priority groups of subchannels is little, distributes closely overlay area, has reduced operating power, has reduced annoyance level, has promoted covering quality.
Be provided with two kinds of methods for the subchannel coverage in the same groups of subchannels: (1) with the coverage method, that is: each subchannel covers identical zone; (2) different coverage methods are promptly pressed the far and near subregion of further dividing apart from the base station, according to the priority assignment subregion of reality use in the overlay area.
When traffic carrying capacity changes, when needing to adjust groups of subchannels use number, correspondingly adjust the overlay area of using groups of subchannels again.
How coverage dynamically adjust for example further specifies below in conjunction with base station 1 in the system of above-mentioned N=4, S=3:
As shown in figure 13, according to the traffic carrying capacity needs, one group of groups of subchannels is all used in each sector, base station, and this moment, coverage was whole sector;
As shown in figure 14, according to the traffic carrying capacity needs, each sector, base station all needs to use two groups of groups of subchannels, and each sector also is divided into inside and outside two parts zone.High priority groups of subchannels 1,5,9 covers perimeter, sector separately, and low priority groups of subchannels 2,6,10 covers perimeter, sector separately;
As shown in figure 15, according to the traffic carrying capacity needs, each sector, base station all needs to use three groups of groups of subchannels, that each sector is divided into accordingly is interior, in, outer three subregions.High priority groups of subchannels 1,5,9 covers perimeter, sector separately, and the 2nd priority groups of subchannels 2,6,10 covers sector central region separately, and the 3rd priority groups of subchannels 3,7,11 covers sector interior zone separately;
As shown in figure 16, according to the traffic carrying capacity needs, four groups of groups of subchannels are all used in each sector, and four subregions are divided by the distance base station distance in each sector, correspondingly give the groups of subchannels of different priorities.
For what the present invention also needed to illustrate a bit be: the OFDMA frame is divided into uplink frame, downlink frame, and the frame of each direction can be divided into service bearer, management and control etc. and has different coverings and capacity characteristic part.At the different requirements of different parts in the OFDMA system-frame, can carry out independent subchannel planning respectively according to method proposed by the invention.
In the said method that the embodiment of the invention provides, when being applied to adopt the cognitive radio system of OFDM/OFDMA standard, because be that the channel of its distribution is more this moment, therefore, the said method that adopts the embodiment of the invention to provide carries out channel allocation when frequency planning, can obtain better effect.
Based on same inventive concept, according to the method for channel allocation that the above embodiment of the present invention provides, correspondingly, another embodiment of the present invention also provides a kind of channel dividing arrangement, and its structural representation comprises as shown in figure 17:
Determining unit 1701 is used to determine spendable each channel in the cell cluster;
Preferable, above-mentioned allocation units 1702, all channels of determining are distributed in each the base station coverage cell or the sector that specifically are used to cell cluster to comprise.
Preferable, above-mentioned allocation units 1702, each channel that specifically is used for determining circulates in order and distributes to each base station coverage cell or sector successively, and give that each base station coverage cell or sector are each distributes a channel, till having distributed all channels for each base station coverage cell or sector; Wherein, when the current channel that should distribute has been distributed to current base station coverage cell or current sector, give current base station coverage cell or current sector with the next channel allocation of the current channel that should distribute; And for each base station coverage cell or sector, the use priority of the channel that distributes is higher than the use priority of the channel that distributes the back earlier.
Preferable, above-mentioned allocation units 1702, each channel that also is used for determining in use behind each the base station coverage cell allocated channel that comprises for cell cluster, is distributed to each sector that this base station coverage cell comprises with each groups of subchannels of distributing to the channel of each base station coverage cell.
Preferable, above-mentioned allocation units 1702, each channel that specifically is used for determining in use, behind each the base station coverage cell allocated channel that comprises for cell cluster, for the sector of the same numbering of different base station coverage cell, for it distributes identical experimental process channel group in each groups of subchannels of same channel; And in the experimental process channel group that each sector that is the same numbering of different base station coverage cell is distributed, the use priority difference of same groups of subchannels; And, be the groups of subchannels difference of the same channel of its distribution for the sector of the difference of same base coverage cell numbering.
In sum, the scheme that the embodiment of the invention provides, comprise: determine spendable each channel in the cell cluster, and each channel allocation that will determine each the base station coverage cell or each sector that comprise to cell cluster, and when in each channel, having same channel for different base station coverage cell or sector distribution, the use priority difference of this same channel in different base station coverage cell or sector.The scheme that adopts the embodiment of the invention to provide compared to existing technology, has reduced the internal system interference, and then has improved systematic function.
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 (10)
1. a method for channel allocation is characterized in that, comprising:
Determine spendable each channel in the cell cluster;
Each base station coverage cell or each sector that each channel allocation of determining is comprised to cell cluster, and when in each channel, having same channel for different base station coverage cell or sector distribution, the use priority difference of this same channel in different base station coverage cell or sector.
2. the method for claim 1 is characterized in that, uses each channel of determining, distributes definite channel for each base station coverage cell or each sector that cell cluster comprises, is specially:
Be respectively each base station coverage cell or the sector that cell cluster comprises and distribute all channels of determining.
3. method as claimed in claim 2 is characterized in that, is respectively each base station coverage cell or the sector that cell cluster comprises and distributes all channels of determining, is specially:
Each channel of determining circulated in order distribute to each base station coverage cell or sector successively, and give that each base station coverage cell or sector are each distributes a channel, till having distributed all channels for each base station coverage cell or sector; Wherein, when the current channel that should distribute has been distributed to current base station coverage cell or current sector, give current base station coverage cell or current sector with the next channel allocation of the current channel that should distribute; And for each base station coverage cell or sector, the use priority of the channel that distributes is higher than the use priority of the channel that distributes the back earlier.
4. as the arbitrary described method of claim 1-3, it is characterized in that each channel of determining in use behind each the base station coverage cell allocated channel that comprises for cell cluster, also comprises:
Each groups of subchannels of distributing to the channel of each base station coverage cell is distributed to each sector that this base station coverage cell comprises.
5. method as claimed in claim 4 is characterized in that, each groups of subchannels of distributing to the channel of each base station coverage cell is distributed to each sector that this base station coverage cell comprises, is specially:
For the sector of the same numbering of different base station coverage cell, for it distributes identical experimental process channel group in each groups of subchannels of same channel; And in the described experimental process channel group that each sector that is the same numbering of different base station coverage cell is distributed, the use priority difference of same groups of subchannels; And
For the sector of the difference of same base coverage cell numbering, be the groups of subchannels difference of the same channel of its distribution.
6. a channel dividing arrangement is characterized in that, comprising:
Determining unit is used to determine spendable each channel in the cell cluster;
Allocation units, each base station coverage cell or each sector that each channel allocation that is used for determining comprises to cell cluster; And when in each channel, having same channel for different base station coverage cell or sector distribution, the use priority difference of this same channel in different base station coverage cell or sector.
7. device as claimed in claim 6 is characterized in that, described allocation units specifically are used to be respectively each base station coverage cell or the sector that cell cluster comprises and distribute all channels of determining.
8. device as claimed in claim 7, it is characterized in that, described allocation units, each channel that specifically is used for determining circulates in order and distributes to each base station coverage cell or sector successively, and give that each base station coverage cell or sector are each distributes a channel, till having distributed all channels for each base station coverage cell or sector; Wherein, when the current channel that should distribute has been distributed to current base station coverage cell or current sector, give current base station coverage cell or current sector with the next channel allocation of the current channel that should distribute; And for each base station coverage cell or sector, the use priority of the channel that distributes is higher than the use priority of the channel that distributes the back earlier.
9. as the arbitrary described device of claim 6-8, it is characterized in that, described allocation units, each channel that also is used for determining in use, behind each the base station coverage cell allocated channel that comprises for cell cluster, each groups of subchannels of distributing to the channel of each base station coverage cell is distributed to each sector that this base station coverage cell comprises.
10. device as claimed in claim 9, it is characterized in that, described allocation units, each channel that specifically is used for determining in use, behind each the base station coverage cell allocated channel that comprises for cell cluster, for the sector of the same numbering of different base station coverage cell, for it distributes identical experimental process channel group in each groups of subchannels of same channel; And in the described experimental process channel group that each sector that is the same numbering of different base station coverage cell is distributed, the use priority difference of same groups of subchannels; And, be the groups of subchannels difference of the same channel of its distribution for the sector of the difference of same base coverage cell numbering.
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