CN100438675C - Method for realizing balanceable up and down going coverage between adjacent base stations - Google Patents
Method for realizing balanceable up and down going coverage between adjacent base stations Download PDFInfo
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- CN100438675C CN100438675C CNB2005100264585A CN200510026458A CN100438675C CN 100438675 C CN100438675 C CN 100438675C CN B2005100264585 A CNB2005100264585 A CN B2005100264585A CN 200510026458 A CN200510026458 A CN 200510026458A CN 100438675 C CN100438675 C CN 100438675C
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Abstract
The present invention relates to mobile communication technology and discloses a method for realizing balanceable uplink coverage and downlink coverage. On the basis that the performance of a system is not influenced, through the simple method, the balance within the range of uplink coverage and downlink coverage for a base station network with a single type is realized. Simultaneously, the expense for constructing the network is reduced. The present invention treats a base station in a mode that sensitivity is reduced, which reduces the receiving sensitivity of a district, reduces the range of the uplink coverage, and realizes the balance of the uplink coverage and the downlink coverage. In addition, a method for calculating the quantity for reducing sensitivity between two or a plurality of base stations is provided.
Description
Technical field
The present invention relates to mobile communication technology, particularly the base station range adjustment technology of moving communicating field.
Background technology
Mobile communication has changed people's life greatly, and along with the development of mobile communication and the growth of communication requirement, the user also improves day by day for the requirement of mobile network's quality.In mobile communication application personal mobile communication field the most widely, cellular mobile system has occupied leading status.Cellular mobile system is divided into several cellular subcovering districts with whole service area, be called sub-district or honeycomb (Cell), each sub-district is covered with a transceiver, this transceiver is called base station (Base Station, be called for short " BS "), in the whole sub-district user all thus the base station finish communication.Owing in different sub-districts, can use identical frequency, therefore only utilize narrower frequency band just can save frequency resource greatly for whole service area provides the mobile communication service.
In cellular mobile communication networks, according to the difference of cell coverage area, the sub-district is divided into three kinds: macrocell (MacroCell), Microcell (MicroCell) and picocell (PicoCell).The covering radius of macrocell is bigger, and the transmitting power of base station is stronger, and antenna is also higher; Microcell replenishes as wireless coverage, is applied in that macrocell is difficult to cover or the area of high traffic, as subway, tunnel, shopping center, conference centre, commercial building, parking lot and other places; And along with capacity requirement further increases, picocell is used to solve the communication issue in indoor high traffic zone such as commercial center, conference centre.These three kinds of sub-districts are for different requirements is all arranged on the parameter of base stations such as transmitting power.
Along with the development of mobile communication and the increase day by day of communication requirement, 3G (Third Generation) Moblie (TheThird Generation, abbreviation " 3G ") system becomes worldwide focus, in the 3G system, for example will inevitably there be the different macrocell of coverage, Microcell and picocell equally in Wideband Code Division Multiple Access (WCDMA) (Wideband Code Division Multiple Access is called for short " the WCDMA ") system.Standardization body as 3G, third generation partner program (3rd GenerationPartnership Project, be called for short " 3GPP ") in the 6th edition (Release 6, are called for short " R6 ") agreement, studied the base station demand of different application scene more and provided detailed guidance.Difference according to the base station rated output power, the R6 agreement is divided into wide area (Wide Area with the base station, be called for short " WA ") BS, middle apart from (Medium Range, be called for short " MR ") BS and this locality (Local Area, abbreviation " LA ") BS is three types, and corresponding application scenarios is respectively macrocell, Microcell and picocell.Because there are different requirements three kinds of dissimilar base stations for parameters such as rated power and reference sensitivities, therefore at design aspect very big difference are arranged, this has just caused the difference of they costs, and in general, its cost of base station that coverage is big more is also high more.
The rated output power of three types of base stations requires to see Table 1, wherein, the upper limit of the base station power output of WA type is not limited.
| Base station type | Rated output power |
| Wide Area BS | -* |
| Medium Range BS | ＜+38dBm |
| Local Area BS | ＜+24dBm |
Table 1 base station rated output power
3GPP agreement R6 has also done requirement to the reference sensitivity of above three types of base stations simultaneously, and is as shown in table 2.
| Base station type | Base station reference sensitivity (dBm) |
| WideArea BS | -121 |
| Medium Range BS | -111 |
| Local Area BS | -107 |
Table 2 base station reference sensitivity
Explanation about three types of base stations among the R6, specifically can be referring to " FDD Base Station (BS) classification (Release 6) ", be 3GPP TR 25.951V6.2.0 (2003-09), Chinese can be translated into " Frequency Division Duplexing (FDD) base station type (the 6th edition) ", i.e. third generation partner program technical report 25.951V6.2.0 (2003-09); And " Base Station (BS) radio transmission and reception (FDD) (Release 6) ", be 3GPP TS 25.104 V6.3.0 (2003-09), Chinese can be translated into " base station radio transmission and reception (Frequency Division Duplexing (FDD)) (the 6th edition) ", i.e. third generation partner program technical standard 25.104 V6.3.0 (2003-09).
Above demand proposes in 3GPP agreement R6 version, but in present and a very long time in the future, the product that meets the R6 agreement does not have, present product all is that (Release 99 according to 3GPP agreement 99 editions, " R99 ") or the 4th edition (Release 4, be called for short " R4 ") exploitation, and the base station product that develops according to R99, R4 even the 5th edition (Release 5, are called for short " R5 ") all is the WA type.
In general,, require the up covering border of sub-district consistent as far as possible, promptly will guarantee balanceable up and down going coverage with descending covering border in order to guarantee better to switch effect and success rate.Wherein, the descending covering boundary definition of two sub-districts is subscriber equipment (User Equipment, abbreviation " UE ") Common Pilot Channel (the Common Pilot Channel of two sub-districts of reception, abbreviation " CPICH ") dominant pilot signal to noise ratio (Ec/Io) equates, be that sub-district independent offset amount (Cell Individual Offset is called for short " CIO ") is 0 point; Up covering boundary definition is the UE identical point of receptivity on two cell base stations that transmits.Wherein, the CIO parameter is used to characterize Ec/Io poor of the CPICH of two sub-districts of descending boundary.But in the real network, the CPICH power that two sub-districts might occur is different, and perhaps two cell loads are different, and perhaps the receiving sensitivity of two sub-districts is different or the like, tend to cause up covering border not overlap with descending covering border, i.e. up-downgoing covers unbalanced situation.
The WCDMA network that only uses the WA type of base station to build if do not take particular processing, up-downgoing will occur and cover unbalanced situation.Up-downgoing occurs when wherein, cellular mobile communication networks uses the single type base station and cover unbalanced situation as shown in Figure 1.Because the base station receiving sensitivity of two sub-districts is identical, therefore near under the ideal situation, the up covering border of two sub-districts is in the mid point of two base stations; And since the base station down transmitting power of Microcell less than the base station down transmitting power of macrocell, therefore the descending covering border of two sub-districts is near the base station of Microcell.Like this, just caused up-downgoing as shown in Figure 1 to cover unbalanced situation.
In fact, so long as use the single type base station networking, owing to the receiving sensitivity of base station is fixed, and descending power can be regulated as required, between macrocell and Microcell, between any two sub-districts, up-downgoing all might occur and cover unbalanced situation incessantly.
Up-downgoing covers the uneven UE that can cause can be to the bigger interference of the up formation of Microcell to the Microcell soft handover time, and when switching, macrocell can increase cutting off rate, therefore up-downgoing covers unbalanced problem and must solve, promptly need to make up-downgoing to cover the border and overlap, reach balanceable up and down going coverage.
Existing technical scheme one can be provided with respectively that the CIO parameter solves or part solves up-downgoing and covers unbalanced problem at different districts.This scheme reaches balanceable up and down going coverage by changing the position on descending covering border up to overlapping with up covering border.In general, can use the scheme that the CIO parameter is set in order to solve serious problems such as turning effect.Wherein, the turning effect be since the 3G system works in 2 GHzs (GHz) frequency range, this frequency band signals diffracting effect is not obvious, have the line-of-sight propagation characteristic and cause block the phenomenon that the corner location signal power of object sharply descends at building etc.Wherein, related description about the turning effect can be 3GPP TS 25.331V5.3.0 (2002-12) referring to " Radio Resource Control (RRC) protocolspecification (Release 5) ", and it is third generation affiliate technical standard 25.331V5.3.0 (2002-12) that Chinese can be translated into " radio resource control standard (the 5th edition) ".
Existing technical scheme two solves by the more antenna diversity of use in macrocell or partly solving up-downgoing covers unbalanced problem.This scheme is by being provided with antenna diversity, the base station can obtain a plurality of samples of the same signal that UE sends, improved the ability that weak signal is received, on effect, be equivalent to and improved the sensitivity that the base station receives, in fact just enlarged the up coverage of sub-district, thereby make up coverage and descending coverage equate as far as possible, realize balanceable up and down going coverage.
In actual applications, there is following problem in such scheme: technical scheme one influences performance of handoffs and applied scene is limited; Technical scheme two costs are higher and to improve effect limited, less application.
Cause the main cause of this situation to be, prior art scheme one makes the descending coverage of Microcell become big, the received power that is arranged so that two sub-districts when UE switches of CIO parameter is unequal, can cause success rate for switching to descend, general just for just using this scheme such as more serious problems such as turning effects, application scenarios is limited.
Prior art scheme two needs more antenna diversity, this will increase the difficulty of signal processing, simultaneously because increasing also of antenna number will increase the cost of hardware significantly, and because the improvement of antenna diversity is conditional, when diversity quantity is many, the effect that increases the antenna improvement again is also very limited, therefore seldom uses.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method that realizes balanceable up and down going coverage, make on the basis that does not influence systematic function the up-downgoing coverage balance that realizes the single type base station networking by simple method, reduced the expense of networking simultaneously.
For achieving the above object, the invention provides the method that realizes balanceable up and down going coverage between a kind of two adjacent base stations, be used for comprising at least the wireless communication system of the first and second adjacent base stations, comprise following steps:
A obtains the parameter of described first base station and second base station, and described parameter comprises: the antenna junction pilot power of described base station, the diversity antenna gain of described base station, the receiving sensitivity of described base station;
When B was in descending covering border according to described parameter with subscriber equipment, described first and second base stations were all principle mutually to the receptivity of this subscriber equipment and calculate the quick amount of going;
C goes quick amount decision needs to go to quick base station and go this base station quick according to described.
In addition, obtain the diversity antenna gain of described base station according to the diversity antenna number approximate calculation of described base station.
In addition, describedly go quick amount to calculate according to following formula:
Go quick amount=(pilot power-second antenna for base station junction, first antenna for base station junction pilot power)-(the diversity antenna gain of diversity antenna gain-the second base station of first base station)+(first base station receiving sensitivity-second base station receiving sensitivity).
In addition, described step C also comprises following substep:
If described to go quick amount be non-negative, then the described second base station receiving sensitivity is turned down, otherwise the described first base station receiving sensitivity is turned down, turning down step-length is the described absolute value that goes quick amount.
In addition, the quick method that can adopt of going of described base station comprises:
Employing is than the receiving device of muting sensitivity; Or
Apply white noise at receive path.
In addition, described wireless communication system can be a broadband CDMA system.
The present invention also provides the method that realizes balanceable up and down going coverage between a kind of a plurality of adjacent base station, and described method comprises following steps:
In described a plurality of adjacent base stations, choosing the base station that antenna for base station junction pilot power adds that receiving sensitivity deducts the value maximum of diversity antenna gain again is basic base station;
When being in the descending covering border of two base stations with subscriber equipment, these two base stations are all principle mutually to the receptivity of this subscriber equipment, calculate the quick amount of going between described basic base station and other base station respectively, and go quick according to result of calculation to other base station.
Wherein, the quick amount of going between described basic base station and other base station is calculated according to following formula:
Go quick amount=(basic antenna for base station junction pilot power-other antenna for base station junction pilot power)-(the diversity antenna gain of diversity antenna gain-other base station of basic base station)+(basic base station receiving sensitivity-other base station receiving sensitivity).
In addition, the quick method that can adopt of going of described base station comprises:
Employing is than the receiving device of muting sensitivity; Or
Apply white noise at receive path.
By relatively finding that the main distinction of technical scheme of the present invention and prior art is, by the base station being gone quick processing, has reduced the receiving sensitivity of sub-district, dwindled up coverage and realized balanceable up and down going coverage.
Difference on this technical scheme, brought comparatively significantly beneficial effect, promptly first, the present invention program adopts the sub-district to go quick method to reach balanceable up and down going coverage, effectively reduce the turning effect, become dry when extraneous disturb, the neighboring trace of mobile phone leaks and power control is unusual etc. influence, avoided descending because of the performance of handoffs that the CIO parameter causes is set.
The second, the present invention program realizes that simply it is convenient to dispose, can be simply by using receiving device than muting sensitivity (price is also relatively cheap), or realize in the mode that receive path applies white noise (utilizing the additional function of device self, almost cost free), can reduce network construction cost.
The 3rd, the realization balanceable up and down going coverage that the present invention program can be more accurate efficiently solves the problem of single type base station networking up-downgoing balance, has optimized network performance, and the business that helps operator is carried out.
The 4th, the present invention program not only is fit to the scene of single base station networking, also is fit to the scene of polytype base station networking, is not only applicable to also be applicable to network between two sub-districts, and therefore application scenario is widely arranged.
Description of drawings
Schematic diagram when Fig. 1 up-downgoing covering imbalance occurs when being cellular mobile communication networks use single type base station;
Fig. 2 is the flow process according to the method for the realization balanceable up and down going coverage of preferred embodiment of the present invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing.
The present invention program reduces the less cell base station receiving sensitivity of coverage, do not need to change the gain of downlink passage, promptly by going quick to the less sub-district of coverage, thereby reduce the up coverage of this sub-district, overlap up to up covering border and descending covering border, reach balanceable up and down going coverage.Wherein, utilize the present invention program to be easy to obtain to go quick amount according to the relevant parameter of two base stations.Because the present invention program simply is easy to dispose and implement, therefore can save the expense of networking, simultaneously, because the sub-district goes quick method therefore can obtain best performance of handoffs so that the transmitting power of two base stations of up-downgoing covering boundary equates and two base stations are also identical to the receptivity that this boundary UE transmits.
For clearer explanation the present invention program, illustrate below in conjunction with preferred embodiment of the present invention.
According to the flow process of the method for the realization balanceable up and down going coverage of preferred embodiment of the present invention as shown in Figure 2.
At first enter step 210, obtain two antenna for base station junction pilot powers and calculated difference.Wherein, the pilot power in this step is the power of CPICH, is unit with dBm.For convenience of description, hereinafter identify two base stations with A and B respectively.In first preferred embodiment of the present invention, two adjacent sub-districts in the WCDMA system are used base station A and base station B respectively, and base station A uses omnidirectional antenna, according to agreement can be directly with the pilot power of base station A configuration as A antenna junction, base station pilot power; Base station B uses omnidirectional to send the sector and receives (Omni Transmit Sectorial Receive, be called for short " OTSR "), B antenna junction, base station pilot power obtains by following formula: the loss of the pilot power of antenna for base station junction pilot power=base station configuration-4.8dB-power splitter loss-stube cable.Wherein, 4.8dB is 10log3, be consider three sector merits divide the pilot power that makes the power of distributing to each sector only be equivalent to base station B configuration 1/3rd and the merit branch attenuation that causes.As a same reason, persons of ordinary skill in the art may appreciate that then merit branch attenuation is 10logN if sector number is N.For considering intuitively, in first preferred embodiment of the present invention, with variable Δ P
CIPCH_ABExpression A antenna junction, base station pilot power deducts the difference of base station B.
Then enter step 220, obtain the diversity antenna number and the ratio calculated of two base stations.In first preferred embodiment of the present invention, with variables A ntenna_Num_Rate
ABThe ratio of the diversity antenna number of expression base station A and base station B.
Then enter step 230, obtain the receiving sensitivity and the calculated difference of two base stations.Wherein, the reference point of receiving sensitivity is the antenna for base station junction, be converted to single antenna and calculate, and be unit with dBm.In first preferred embodiment of the present invention, with variable Δ S
ABThe receiving sensitivity of expression base station A deducts the difference of the receiving sensitivity of base station B.
Then enter step 240, calculate the quick amount of going.Wherein, calculate that to go the principle of quick amount be to make that when UE was in descending covering border, two base stations were identical for the reception of UE signal.Those of ordinary skill in the art understand, and at descending covering boundary, two base stations when identical, can obtain best switching effect for the reception of UE signal.In first preferred embodiment of the present invention, A relative base station B in base station removes quick amount D
ABCalculate acquisition: D by following formula
AB=Δ P
CIPCH_AB-F+ Δ S
ABWherein, F is a constant relevant with the receive diversity antenna number of base station, and is relevant with the diversity reception performance of base station, if Antenna_Num_Rate
AB〉=1, its span is 0≤F≤10*Log (Antenna_Num_Rate
AB); If Antenna_Num_Rate
AB＜1, its span is 0＞F＞10*Log (Antenna_Num_Rate
AB).The concrete value of F can be set or rule of thumb be set by network optimization personnel through measuring, and in first preferred embodiment of the present invention, the F value is 5*Log (Antenna_Num_Rate
AB).Persons of ordinary skill in the art may appreciate that 10*Log (Antenna_Num_Rate
AB) be the relative base station B of base station A antenna diversity produced is the difference of the maximum receiving gain of unit with the decibel.The quick amount D that goes for the relative base station B of base station A of the present invention's first preferred embodiment
ABComputing formula derive as follows.
Supposition base station A and B antenna junction, base station pilot power are respectively P earlier
CIPCH_AAnd P
CIPCH_B(unit is dBm), the receiving gain of diversity antenna is respectively G
AAnd G
B(unit is dB), receiving sensitivity is respectively S
AAnd S
B(unit is dBm), the quick amount of going of the relative base station B of base station A is D
AB(unit is dB).Make F=G
A-G
B, then have
ΔP
CIPCH_AB＝P
CIPCH_A-P
CIPCH_B……………………………………………(1)
ΔS
AB＝S
A-S
B……………………………………………………(3)
Suppose that base station A and base station B are respectively L to the path loss on its descending covering border
AAnd L
B, the descending covering boundary two sub-districts, base station A that UE receives and the power of base station B equate then have
P
CIPCH_A-L
A＝P
CIPCH_B-L
B…………………………………………(4)
Do not consider to change descending power, then descending covering border at this moment in order to reach best performance of handoffs, also need (suppose that power is P at this signal of locating the UE transmission as handoff boundary
UE, unit is dBm) and the same at base station A with base station B receptivity, this is equivalent to UE power that base station A and base station B receive and adds that value and receiving sensitivity difference separately after the antenna gain separately are equal, then has
P
UE+G
A-L
A-S
A＝P
UE+G
B-L
B-(S
B+D
AB)…………………………(5)
Wherein, S
B+ D
ABBe base station B and go the equivalent sensitivity in quick back, (5) formula also is
D
AB＝(L
A-L
B)-(G
A-G
B)+(S
A-S
B)…………………………………(6)
By (1), (4) Shi Kede
L
A-L
B＝P
CIPCH_A-P
CIPCH_B＝ΔP
CIPCH_AB……………………………………(7)
With (3), (7) formula and F=G
A-G
BSubstitution (6) formula gets:
D
AB＝ΔP
CIPCH_AB-F+ΔS
AB………………………………………………(8)
Be the quick amount computing formula of going of A relative base station B in base station in the present invention's first preferred embodiment.
In second preferred embodiment of the present invention, base station A and base station Type B are number identical, and receiving sensitivity is identical, and the computational short cut that goes quick amount of the relative base station B of base station A is D
AB=Δ P
CIPCH_AB-F.
Enter step 250 at last, according to going quick amount decision needs to go to quick sub-district and it is gone quick.Wherein, go the quick sensitivity that is about to the base station to turn down, if go quick amount on the occasion of, show that the sensitivity of base station B is too high, will remove quick D at base station B
ABOtherwise remove quick D at base station A
ABFor example in first preferred embodiment of the present invention, D
ABFor on the occasion of, the sensitivity of base station B is S
B, then base station B is removed quick D
ABAfter, the sensitivity of base station B equivalence is S
B+ D
ABConcrete implement to go to adopt receiving device when quick, also can apply white noise (cost is low, realizes also very convenient) at receive path than muting sensitivity.
Though the present invention covers unbalanced problem and proposes in order to solve up-downgoing between macrocell and the Microcell, but persons of ordinary skill in the art may appreciate that the present invention program can calculate between any two sub-districts goes quick amount to realize balanceable up and down going coverage.
In second preferred embodiment of the present invention, calculate in the network area in the WCDMA system a plurality of neighbor cells the base station go quick amount.These a plurality of adjacent base stations can direct neighbor, also can be indirect neighbor's (for example base station A and B direct neighbor, B and C direct neighbor, but A discord C direct neighbor).Judge in the network area when whether a plurality of base stations are adjacent, can be each base station in the network area as a node, if two base station direct neighbors then between these two base station node corresponding, draw a line, form a figure at last, on this figure, if have a path (connecting) between any two nodes at least, think that then all base stations are adjacent in this network area by one or more line.
Because a plurality of neighbor cells are arranged,, be called basic base station here so will select the benchmark of a reference earlier.Choosing the base station that antenna for base station junction pilot power adds that receiving sensitivity deducts the maximum as a result of diversity antenna gain again is basic base station, calculate the quick amount of going between basic base station and other base station respectively, and go quick to other base station according to the quick amount of going that calculates.For example, base station A, B, C are an adjacent base station in the network area, calculate the W value of A, B, C respectively, obtain W
A, W
BAnd W
C, wherein,
W=antenna for base station junction pilot power+receiving sensitivity-diversity antenna gain
Compare W
A, W
BAnd W
C, suppose W
AMaximum is then chosen base station A as basic base station, calculates the quick amount of going between A and B, A and the C respectively, goes quick according to result of calculation to base station B, C again.The concrete computational methods of going quick amount are with to go quick method identical with first embodiment.
Though by with reference to some preferred embodiment of the present invention, the present invention is illustrated and describes, those of ordinary skill in the art should be understood that and can do various changes to it in the form and details, and without departing from the spirit and scope of the present invention.
Claims (9)
1. realize the method for balanceable up and down going coverage between two adjacent base stations, be used for comprising at least the wireless communication system of the first and second adjacent base stations,
It is characterized in that, comprise following steps:
A obtains the parameter of described first base station and second base station, and described parameter comprises: the antenna junction pilot power of described base station, the diversity antenna gain of described base station, the receiving sensitivity of described base station;
When B was in descending covering border according to described parameter with subscriber equipment, described first and second base stations were all principle mutually to the receptivity of this subscriber equipment and calculate the quick amount of going;
C goes quick amount decision needs to go to quick base station and go this base station quick according to described.
2. realize the method for balanceable up and down going coverage between two adjacent base stations according to claim 1, it is characterized in that, obtain the diversity antenna gain of described base station according to the diversity antenna number approximate calculation of described base station.
3. realize the method for balanceable up and down going coverage between two adjacent base stations according to claim 1, it is characterized in that, describedly go quick amount to calculate according to following formula:
Go quick amount=(pilot power-second antenna for base station junction, first antenna for base station junction pilot power)-(the diversity antenna gain of diversity antenna gain-the second base station of first base station)+(first base station receiving sensitivity-second base station receiving sensitivity).
4. realize the method for balanceable up and down going coverage between two adjacent base stations according to claim 3, it is characterized in that described step C also comprises following substep:
If described to go quick amount be non-negative, then the described second base station receiving sensitivity is turned down, otherwise the described first base station receiving sensitivity is turned down, turning down step-length is the described absolute value that goes quick amount.
5. according to the method that realizes balanceable up and down going coverage in the claim 1 to 4 between each described two adjacent base stations, it is characterized in that the quick method that can adopt of going of described base station comprises:
Employing is than the receiving device of muting sensitivity; Or
Apply white noise at receive path.
6. realize the method for balanceable up and down going coverage between two adjacent base stations according to claim 5, it is characterized in that described wireless communication system is a broadband CDMA system.
7. realize the method for balanceable up and down going coverage between a plurality of adjacent base stations, it is characterized in that described method comprises following steps:
In described a plurality of adjacent base stations, choosing the base station that antenna for base station junction pilot power adds that receiving sensitivity deducts the value maximum of diversity antenna gain again is basic base station;
When being in the descending covering border of two base stations with subscriber equipment, these two base stations are all principle mutually to the receptivity of this subscriber equipment, calculate the quick amount of going between described basic base station and other each base station respectively, and go quick to other each base station according to result of calculation.
8. realize the method for balanceable up and down going coverage between a plurality of adjacent base stations according to claim 7, it is characterized in that the quick amount of going between described basic base station and other base station is calculated according to following formula:
Go quick amount=(basic antenna for base station junction pilot power-other antenna for base station junction pilot power)-(the diversity antenna gain of diversity antenna gain-other base station of basic base station)+(basic base station receiving sensitivity-other base station receiving sensitivity).
9. according to the method that realizes balanceable up and down going coverage between claim 7 or 8 described a plurality of adjacent base stations, it is characterized in that the quick method that can adopt of going of described base station comprises:
Employing is than the receiving device of muting sensitivity; Or
Apply white noise at receive path.
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| CN101754344B (en) * | 2008-12-19 | 2011-11-09 | 中国移动通信集团设计院有限公司 | Uplink covering capacity control method of time division synchronization code division multiple access (TD-SCDMA) system and user equipment |
| CN102547821B (en) * | 2010-12-14 | 2015-09-02 | 中兴通讯股份有限公司 | A kind of descending coverage prediction method of theaomni-directional transmission directional reception site type and device |
| CN103974314B (en) * | 2013-01-29 | 2018-05-11 | 中国移动通信集团浙江有限公司 | A kind of telephone traffic calculates method, apparatus and communication system |
| CN104717734A (en) | 2013-12-17 | 2015-06-17 | 中兴通讯股份有限公司 | Method for improving pilot frequency transmitting power of imbalance area and base station |
| CN103747496B (en) * | 2013-12-31 | 2017-10-17 | 华为技术有限公司 | Improve method, device and the user equipment of uplink signal-channel quality in heterogeneous network |
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| CN1130975A (en) * | 1994-07-21 | 1996-09-11 | 夸尔柯姆股份有限公司 | Method and apparatus for balancing forward link handoff boundary to reverse link handoff boundary in cellular communication system |
| US5584049A (en) * | 1994-09-12 | 1996-12-10 | Qualcomm Incorporated | Apparatus and method for adding and removing a base station from a cellular communications system |
| CN1261990A (en) * | 1997-05-05 | 2000-08-02 | 艾利森电话股份有限公司 | Butter beam port combining for hexagonal cell coverage |
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2005
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1130975A (en) * | 1994-07-21 | 1996-09-11 | 夸尔柯姆股份有限公司 | Method and apparatus for balancing forward link handoff boundary to reverse link handoff boundary in cellular communication system |
| US5584049A (en) * | 1994-09-12 | 1996-12-10 | Qualcomm Incorporated | Apparatus and method for adding and removing a base station from a cellular communications system |
| CN1261990A (en) * | 1997-05-05 | 2000-08-02 | 艾利森电话股份有限公司 | Butter beam port combining for hexagonal cell coverage |
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