CN100558182C - Realize the method and the device of isolation in a kind of Hierarchical Network - Google Patents
Realize the method and the device of isolation in a kind of Hierarchical Network Download PDFInfo
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- CN100558182C CN100558182C CNB2006100575983A CN200610057598A CN100558182C CN 100558182 C CN100558182 C CN 100558182C CN B2006100575983 A CNB2006100575983 A CN B2006100575983A CN 200610057598 A CN200610057598 A CN 200610057598A CN 100558182 C CN100558182 C CN 100558182C
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Abstract
The present invention relates to realize in the Hierarchical Network method and apparatus of isolation, this method is provided with two carrier waves in the microcell base station of corresponding macrocellular and microcellulor interlaced area, and first carrier f1 adopts the macrocellular channel, and the second carrier wave f2 adopts the microcellulor channel; Give described first carrier f1 and the different transmitting power of described second carrier wave f2 configuration; Transmitting of described microcell base station is divided into two paths of signals, first via signal sends to the microcellulor sector, the second road signal is selected through overfrequency, the transmitting power of the wherein said second carrier wave f2 is suppressed to the transmitting power that is lower than described first carrier f1, described the second road signal is sent to macrocellular and microcellulor interlaced area, form isolated sectors.The invention also discloses the device of realizing isolation in the Hierarchical Network.The present invention does not increase under the hardware case at the multicarrier microcell base station, selects processing unit by the frequency of outside, is improved to cover with the effect of switching to isolate the overlay area, has improved the network quality of Hierarchical Network switch area.
Description
Technical field
The present invention relates to the mobile communication technology field, relate in particular to method and the device of realizing isolation in the Hierarchical Network.
Background technology
In the cellular communication system of CDMA system, a kind of network plan that solves the network coverage and capacity at present is to adopt the Hierarchical Network technology.Introduce microcellulor in Hierarchical Network, macrocellular and microcellulor are arranged to different levels, adopt specific sub-district gravity treatment and handoff algorithms, the user that will be under free time or the connection mode is assigned to macrocellular layer or microcellulor layer, the carrier wave that two-layer employing is different.
But Hierarchical Network is not when having enough isolations, causes the frequent alien frequencies of user to switch easily, causes the decline of network quality.A kind of very typical scene for example cited below as shown in Figure 1, uses microcellulor to cover in a commercial building, adopts the f2 channel, and commercial building uses macrocellular to cover outward, adopts the f1 channel, forms two layers of mesh.When the mobile subscriber passes in and out commercial building, will be in the zone that macrocellular and microcellulor intersection covers, because two layers of mesh does not have tangible interface switching in the staggered covering in zone, commercial building doorway, this situation is easy to cause portable terminal to carry out the alien frequencies direct-cut operation continually.Therefore under this scene, the quality of network is poor in the technical scheme that common employing Hierarchical Network covers.
The scheme that the alien frequencies switching problem frequently appears in portable terminal in the macrocellular and microcellulor interlaced area has also appearred at present solving in the Hierarchical Network.In order to improve the quality of the intricate situation lower network of signal in two layers of mesh interlaced area, particularly the two layers of mesh interlaced area, on the base station of microcellulor, increase a new sector again, macrocellular and the staggered zone of microcellulor in the special covering two layers of mesh, this sector provides a carrier wave with the same working channel of macrocellular, so just can strengthen the isolation between the two layers of mesh alien frequencies area of coverage.Still be example with foregoing commercial building, as shown in Figure 2, use microcellulor to cover in a commercial building, adopt the f2 channel, commercial building uses macrocellular to cover outward, adopts the f1 channel, forms two layers of mesh.When the mobile subscriber enters commercial building, at first from the macrocellular that adopts the f1 channel with on the carrier wave sector that frequently switches to the employing f1 channel that microcellulor increases newly, switch on the f2 channel of microcellulor by alien frequencies again.Because the prime coverage area territory isolation between the two layers of mesh alien frequencies improves, and switching frequency reduces, and handover success rate improves, network quality also significantly rises like this.
But this solution requirement must increase a carrier wave sector in that microcellulor is extra, and this carrier wave sector mainly is to play the effect of isolating two-layer alien frequencies net, and its regional telephone traffic is very little, causes under the very high situation of cost utilization rate of equipment and installations very low like this.
Summary of the invention
The objective of the invention is to propose to realize in a kind of Hierarchical Network the method and apparatus of isolating, can solve the very too high problem of low carrier sector cost of the utilance that increases in the prior art scheme.
The inventive method comprises:
Realize the method for isolation in a kind of Hierarchical Network, be applicable in the staggered cellular communication system of macrocellular and microcellulor, comprising:
A, two carrier waves are set in the microcell base station of corresponding macrocellular and microcellulor interlaced area, first carrier adopts macrocellular channel f1, and second carrier wave adopts microcellulor channel f2;
B, be described first carrier f1 and the different transmitting power of described second carrier wave f2 configuration, the transmitting power of described second carrier wave configuration is greater than the transmitting power of described first carrier configuration;
C, transmitting of described microcell base station is divided into two paths of signals, first via signal sends to the microcellulor sector, the second road signal is selected through overfrequency, the transmitting power of the described second carrier wave f2 is suppressed to the transmitting power that is lower than described first carrier f1, described the second road signal is sent to macrocellular and microcellulor interlaced area, form isolated sectors.
Described method, further comprising the steps of:
D, base station are with the characteristic reporting base station controller of its resource status, and described base station controller is optimized and revised the radio-resource-configuration of each sub-district.
Transmitting of microcell base station is divided into two same signals by combiner-divider described in the described step C.
The second road signal described in the described step C is by the frequency selectivity processing unit, and the transmitting power of the described second carrier wave f2 is suppressed.
Described frequency selectivity processing unit is a band stop filter.
The stop-band frequency of described band stop filter is for that fix or adjustable.
Described frequency selectivity processing unit is a band pass filter.
The band connection frequency of described band pass filter is for that fix or adjustable.
Apparatus of the present invention comprise:
Realize the device of isolation in a kind of Hierarchical Network, be applicable in the staggered cellular communication system of macrocellular and microcellulor, comprise a microcell base station, two carrier waves are set in the microcell base station of this corresponding macrocellular and microcellulor interlaced area, first carrier adopts macrocellular channel f1, second carrier wave adopts microcellulor channel f2, and be that the transmitting power of described second carrier wave configuration is greater than the transmitting power that disposes for described first carrier; Comprise a combiner-divider on the antenna of emission function possessing, be used for transmitting of two carrier waves is divided into two paths of signals, also comprise a frequency selectivity processing unit, be used for wherein one road signal of two paths of signals is carried out the frequency selection, the transmitting power of the described second carrier wave f2 is suppressed to the transmitting power that is lower than described first carrier f1, wherein, the road signal of selecting through overfrequency is sent to macrocellular and microcellulor interlaced area, form isolated sectors, another road signal is sent to the microcellulor sector.
Described frequency selectivity processing unit can be band stop filter or band pass filter.
Because NodeB develops to the direction of multicarrier transceiver, multicarrier transceiver is used in increasing base station.Under the situation that does not increase the sector, increase a carrier wave in the base station newly, do not increase hardware component newly.Adopted the present invention, do not increased under the situation of hardware, selected processing unit, be improved to cover and isolate the overlay area, significantly improved the network quality of Hierarchical Network switch area with the effect of switching by the frequency of outside in the base station of microcellulor.
Description of drawings
Fig. 1 is the Hierarchical Network structural representation of no isolated sectors in the prior art;
Fig. 2 is the Hierarchical Network structural representation of isolating in the prior art scheme;
Fig. 3 is the Hierarchical Network structural representation that only increases carrier wave, do not increase the sector;
Fig. 4 is the apparatus structure schematic diagram that utilizes two antennas to realize the Hierarchical Network isolation of the present invention;
Fig. 5 is the apparatus structure schematic diagram that utilizes three antennas to realize the Hierarchical Network isolation of the present invention;
Fig. 6 is the flow chart that Hierarchical Network of the present invention is realized isolation;
Fig. 7 is for using the design sketch of band stop filter;
Fig. 8 is for using the design sketch of band limiting filter;
Fig. 9 realizes the Hierarchical Network effect structure schematic diagram of isolating for the present invention.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described.
Still being staggered to form two layers of mesh with macrocellular and microcellulor is that example illustrates technical scheme of the present invention.
NodeB develops to the direction of multicarrier transceiver at present, and multicarrier transceiver is used in increasing base station.Under the situation that does not increase the sector, can increase a carrier wave in the base station newly, and do not increase hardware component newly, but as shown in Figure 3, iff being to increase the carrier wave that channel is f1 in the microcellulor of f2 at channel, even this carrier wave that increases newly is consistent with the channel of macrocellular, owing to do not form isolated sectors, and do not reach the purpose of isolating macrocellular and microcellulor yet.
For reaching the purpose that does not increase the BTS hardware parts and can effectively isolate macrocellular and microcellulor, the present invention utilizes multicarrier hardware and frequency alternative pack, is improved to cover with the switching effect to isolate the overlay area.
Technical scheme of the present invention can be taked following embodiment.
As shown in Figure 4, embodiment 1 is the example explanation realizes isolation in Hierarchical Network a device with the base station of single sector, 2 carrier waves, microcell base station 100 is the base station of single sector, 2 carrier waves, comprise 2 antennas, an antenna 101 is a duplexer, another root antenna 102 is a reception antenna, the combiner-divider 103 of a 3dB is set on antenna 101, signal halves is become two-way, one road signal mails to the microcellulor sector, one road signal sends to macrocellular and the staggered zone of microcellulor through frequency selectivity processing unit 105, forms isolated sectors.104 of combiner-dividers on combiner-divider on the antenna 101 103 and antenna 102 are merged into one road signal with the signal of the microcellulor sector that receives and isolated sectors respectively and issue microcell base station 100.
Realize that the present invention also can take other embodiments, as shown in Figure 5, embodiment 2 also is with single sector, the base station of 2 carrier waves is the example explanation realizes isolation in Hierarchical Network a device, microcell base station 200 is single sector, the base station of 2 carrier waves, but this base station comprises three antennas, an antenna 201 is a transmitting antenna, other two antennas, be that antenna 202 and antenna 203 are reception antenna, the combiner-divider 204 of a 3dB is set on antenna 201, signal halves is become two-way, one road signal mails to the microcellulor sector, and one road signal sends to macrocellular and the staggered zone of microcellulor through frequency selectivity processing unit 206, forms isolated sectors.205 of combiner-dividers on combiner-divider on the antenna 202 207 and antenna 203 are merged into one road signal with the signal of the microcellulor sector that receives and isolated sectors respectively and issue microcell base station 200.
Specifically describe the method that realizes isolation in conjunction with said apparatus more below, as shown in Figure 6, may further comprise the steps:
S100, two carrier waves of different channel are set in microcell base station inside;
In microcell base station inside, two different carrier waves are set, one of the channel of two carrier waves is f1, and is consistent with the channel of macrocellular, another is f2;
S200, the signal of disposing smaller power for a carrier wave, another carrier wave configuration is more high-power;
Give the signal of the carrier wave configuration of f1 channel, and dispose most transmitting power for the carrier wave of f2 channel than the little 20dBc of total transmitting power;
The signal of S300, two carrier waves is divided into two paths of signals by combiner-divider;
The signal that sends from the duplexer of microcell base station is divided into two paths of signals through the combiner-divider of a 3dB;
S400, one road signal are directly issued the microcellulor sector, and another road signal is issued isolated sectors after handling through the frequency selectivity processing unit;
One road f2 channel is directly issued the microcellulor sector for the-total transmitting power of 3dBc, f1 channel for the signal of-total transmitting power of 23dBc, one road f2 channel is the-total transmitting power of 23dBc for the-total transmitting power of 3dBc, f1 channel for the signal of-total transmitting power of 23dBc becomes the f1 channel after handling through the frequency selectivity processing unit, the relative inhibition that the f2 channel is subjected to 40dB becomes-signal of the total transmitting power of 43dBc, and issue macrocellular and the staggered zone of microcellulor, form isolated sectors.
" the total transmitting power of 3dBc " in the such scheme, " the total transmitting power of 23dBc ", " inhibition that is subjected to 40dB becomes-the total transmitting power of 43dBc " etc. are not necessary value, this value is adjustable, reaches that to give the sector of interlaced area by two channel signals that form unequal power be basic goal.
Wherein the frequency selectivity processing unit can be carried out different disposal to different frequency, provide extra supression degree to unwanted signal, perhaps to the signal of needs provide by, other signals are restrained, implement differential declines by signal, implement the processing of two carrier wave differential declines characteristics different frequency.
The frequency selectivity processing unit can be band stop filter, it gives very little decay to all received signals, also give very little decay for transmitting of f1 channel, the f2 channel that suppresses for needs transmits more inhibition is provided, the processing f2 of this filter of process transmits and reduces greatly, and other signals do not change substantially.The stopband channel of band resistance can be fixed, and also can be adjustable, to adapt to different working channels.
As shown in Figure 7, be to use the effect schematic diagram of band stop filter.
The frequency selectivity processing unit also can be band pass filter, it gives very little decay to all received signals, also give very little decay for transmitting of f1 channel, the f2 channel that suppresses for needs transmits more inhibition is provided, the processing f2 of this filter of process transmits and reduces greatly, and other signals do not change substantially.The passband channel that band is logical can be fixed, and also can be adjustable, to adapt to different working channels.
As shown in Figure 8, be to use the effect schematic diagram of band pass filter.
By this execution mode, can obtain two sectors of equivalence, as shown in Figure 9, main signal power energy is used for the main overlay area of microcellulor, solves to cover and capacity; The carrier wave of less transmitting power is used for isolated sectors, is used for the switching transition of two layers of mesh.Because the telephone traffic of transitional region is very little, needing hardly increases the base station baseband disposal ability, and radio frequency part is used the existing hardware of multicarrier, therefore concerning the base station, do not increase hardware, and network quality has been improved greatly, and the cost that entire method realizes is very low.
This scheme while base station reports base station controller with the resource status characteristic of this base station, and base station controller is optimized and revised the radio-resource-configuration of each sub-district, reaches the performance of optimal performance under the existing resource situation.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with the people of this technology in the disclosed technical scope of the present invention; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (10)
1, realize the method for isolation in a kind of Hierarchical Network, be applicable in the staggered cellular communication system of macrocellular and microcellulor, it is characterized in that, comprising:
A, two carrier waves are set in the microcell base station of corresponding macrocellular and microcellulor interlaced area, first carrier adopts macrocellular channel f1, and second carrier wave adopts microcellulor channel f2;
B, be described first carrier f1 and the different transmitting power of described second carrier wave f2 configuration, the transmitting power of described second carrier wave configuration is greater than the transmitting power of described first carrier configuration;
C, transmitting of described microcell base station is divided into two paths of signals, first via signal sends to the microcellulor sector, the second road signal is selected through overfrequency, the transmitting power of the described second carrier wave f2 is suppressed to the transmitting power that is lower than described first carrier f1, described the second road signal is sent to macrocellular and microcellulor interlaced area, form isolated sectors.
2, the method for claim 1 is characterized in that, and is further comprising the steps of:
D, base station are with the characteristic reporting base station controller of its resource status, and described base station controller is optimized and revised the radio-resource-configuration of each sub-district.
3, the method for claim 1 is characterized in that, transmitting of microcell base station is divided into two same signals by combiner-divider described in the described step C.
4, the method for claim 1 is characterized in that, the second road signal described in the described step C is by the frequency selectivity processing unit, and the transmitting power of the described second carrier wave f2 is suppressed.
5, method as claimed in claim 4 is characterized in that, described frequency selectivity processing unit is a band stop filter.
6, method as claimed in claim 5 is characterized in that, the stop-band frequency of described band stop filter is for that fix or adjustable.
7, method as claimed in claim 4 is characterized in that, described frequency selectivity processing unit is a band pass filter.
8, method as claimed in claim 7 is characterized in that, the band connection frequency of described band pass filter is for that fix or adjustable.
9, realize the device of isolation in a kind of Hierarchical Network, be applicable in the staggered cellular communication system of macrocellular and microcellulor, comprise a microcell base station, it is characterized in that: two carrier waves are set in the microcell base station of this corresponding macrocellular and microcellulor interlaced area, first carrier adopts macrocellular channel f1, second carrier wave adopts microcellulor channel f2, and be that the transmitting power of described second carrier wave configuration is greater than the transmitting power that disposes for described first carrier; Comprise a combiner-divider on the antenna of emission function possessing, be used for transmitting of two carrier waves is divided into two paths of signals, also comprise a frequency selectivity processing unit, be used for wherein one road signal of two paths of signals is carried out the frequency selection, the transmitting power of the described second carrier wave f2 is suppressed to the transmitting power that is lower than described first carrier f1, wherein, the road signal of selecting through overfrequency is sent to macrocellular and microcellulor interlaced area, form isolated sectors, another road signal is sent to the microcellulor sector.
10, device as claimed in claim 9 is characterized in that, described frequency selectivity processing unit can be band stop filter or band pass filter.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2006100575983A CN100558182C (en) | 2006-03-16 | 2006-03-16 | Realize the method and the device of isolation in a kind of Hierarchical Network |
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| CNB2006100575983A CN100558182C (en) | 2006-03-16 | 2006-03-16 | Realize the method and the device of isolation in a kind of Hierarchical Network |
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| CN100558182C true CN100558182C (en) | 2009-11-04 |
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| CN101730313A (en) * | 2008-10-10 | 2010-06-09 | ***通信集团公司 | Communication method, base station and communication system in multiple carrier mobile communication system |
| WO2010149293A1 (en) | 2009-06-26 | 2010-12-29 | Deutsche Telecom Ag | Method and program for channel modification in a cell of a mobile radio access network |
| CN104219684A (en) * | 2013-05-29 | 2014-12-17 | 中兴通讯股份有限公司 | A cell networking method and device |
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