CN104717677B - The TD LTE frames collocation methods and device of co-siting base stations - Google Patents
The TD LTE frames collocation methods and device of co-siting base stations Download PDFInfo
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- CN104717677B CN104717677B CN201310680805.0A CN201310680805A CN104717677B CN 104717677 B CN104717677 B CN 104717677B CN 201310680805 A CN201310680805 A CN 201310680805A CN 104717677 B CN104717677 B CN 104717677B
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Abstract
The invention discloses the TD LTE frames collocation methods and device of a kind of co-siting base stations, configured to solve existing TD SCDMA systems with the TD LTE frames on TD LTE system co-siting base stations, so that interference of the descending pilot frequency of TD LTE systems to the ascending pilot frequency of TD SCDMA systems can be avoided in advance well.Methods described includes：Obtain co-siting base stations in designated area and account for the ratio Y for running and having TD SCDMA total number of base；If Y is more than co-located proportion threshold value, the base station that TD SCDMA systems UpPCH skews have been opened in statistics designated area accounts for the ratio N for running and having TD SCDMA system base-stations sum；If N is less than shift ratio threshold value, using TD LTE system descending pilot frequency time slots DwPTS：Protect time slot GP：Uplink pilot time slot UpPTS subframe proportioning is 9:3:2 sub-frame configuration mode carries out the configuration of TD LTE frames.
Description
Technical field
The present invention relates to the time-division Long Term Evolution of moving communicating field (Time Division-Long Term
Evolution, TD-LTE) technology, more particularly to the TD-LTE frames collocation method and device of a kind of co-siting base stations.
Background technology
TD SDMA (Time Division-Synchronous Code Division Multiple
Access, TD-SCDMA), the system such as TD-LTE, be all time division duplex (Time Division Duplex, the TDD) skill used
Art networking.The networking of TDD technologies uses time division multiplexing mode, upward signal is shared same frequency range with downstream signal, that is, is using
In the system of TDD technology networkings, send and receive same frequency range at different moments alternately.Therefore in order to avoid up-downgoing is believed
Number interfere, it is desirable to the time stringent synchronization between each base station；The co-siting base stations for there are different tdd systems are especially used,
Such as TD-SCDMA and TD-LTE co-siting base stations, to avoid requirement of the interference between different system to synchronization just harsher.
In order to realize strict precise synchronization, prior art is mainly considered from wireless frame structure, by nothing
Special subframe is set on line frame structure, and passes through the mode such as the protection interval of the wireless frame structure that aligns and the transfer point of up-downgoing
To realize synchronization, to avoid interfering between each base station or between same uplink signal of base station and downstream signal.It is but existing
All not in view of the problem of on co-siting base stations, the pilot tone up and down of different system interferes in the implementation of technology.
The content of the invention
In view of this, it is a primary object of the present invention to provide the TD-LTE frames collocation method and dress of a kind of co-siting base stations
Put, can effectively avoid interference of the descending pilot frequency of TD-LTE system to TD-SCDMA system ascending pilot frequency.
To reach above-mentioned purpose, the technical proposal of the invention is realized in this way：
First aspect present invention provides a kind of TD-LTE frame collocation methods of co-siting base stations, and the co-siting base stations are run simultaneously
There are TD-SCDMA system and TD-LTE system, methods described includes：
Obtain the co-siting base stations in the designated area and account for the ratio Y for running and having TD-SCDMA base station sum；
If the Y is more than co-located proportion threshold value, counts and TD-SCDMA system UpPCH skews have been opened in designated area
Base station, which accounts for operation, the ratio N of TD-SCDMA system total number of base；
Judge whether the N is less than shift ratio threshold value, if then using TD-LTE system descending pilot frequency time slot DwPTS：
Protect time slot GP：Uplink pilot time slot UpPTS subframe proportioning is 9:3:2 sub-frame configuration mode carries out the TD-LTE frames and matched somebody with somebody
Put.
Preferably, methods described also includes：
The N is not less than shift ratio threshold value, then counts the offset for having opened TD-SCDMA system UpPCH skews, and
Offset average i is calculated；
Judge whether the i is less than offset threshold value,
If so, then use the DwPTS of TD-LTE system：GP：UpPTS subframe proportioning is 9:3:2 sub-frame configuration mode
Carry out the TD-LTE frames configuration；
If it is not, then use DwPTS in TD-LTE system：GP：UpPTS subframe proportioning is 3:9:2 sub-frame configuration mode
Carry out the TD-LTE frames configuration.
Preferably, TD-LTE system uses F-band on the co-siting base stations.
Preferably, the TD-LTE system on the co-siting base stations and the TD-SCDMA system shared radio frequency zoom out list
Member.
Second aspect of the present invention provides a kind of TD-LTE frame configuration devices of co-siting base stations, and the co-siting base stations are run simultaneously
There are TD-SCDMA system and TD-LTE system, it is characterised in that described device includes：
First statistic unit, accounting for operation obtaining the co-siting base stations in the designated area has TD-SCDMA base station total
Several ratio Y；
Second statistic unit, when the Y is more than co-located proportion threshold value, to count in designated area and open TD-
The base station of SCDMA systems UpPCH skews, which accounts for operation, the ratio N of TD-SCDMA system total number of base；
Judging unit, to the N and the multilevel iudge of shift ratio threshold value；
Dispensing unit, to when the N is less than shift ratio threshold value, using TD-LTE system descending pilot frequency time slot
DwPTS：Protect time slot GP：Uplink pilot time slot UpPTS subframe proportioning is 9:3:2 sub-frame configuration mode carries out the TD-
LTE frames configure.
Further, described device also includes the 3rd statistic unit；
3rd statistic unit, also to when the N is not less than shift ratio threshold value, statistics has opened TD-SCDMA
The offset of system UpPCH skews, and calculate offset average i；
The judging unit, also judging whether the i is less than offset threshold value；
The dispensing unit, also to when the i is less than offset threshold value, using the DwPTS of TD-LTE system：GP：
UpPTS subframe proportioning is 9:3:2 sub-frame configuration mode carries out the TD-LTE frames configuration；And in the i not less than skew
When measuring threshold value, using DwPTS in TD-LTE system：GP：UpPTS subframe proportioning is 3:9:2 sub-frame configuration mode carries out institute
State the configuration of TD-LTE frames.
Further, TD-LTE system uses F-band on the co-siting base stations.
Further, the TD-LTE system on the co-siting base stations and the TD-SCDMA system shared radio frequency zoom out list
Member.
The TD-LTE frames collocation method and device of co-siting base stations provided in an embodiment of the present invention, first pass through co-located ratio and
To the statistics of TD-SCDMA system UpPCH skews, the multilevel iudge with shift ratio threshold value, to determine in TD-SCDMA system
Whether ascending pilot frequency can further enter line displacement；The special subframe that the frame collocation method of TD-LTE system specifically uses is determined again,
In this way, effectively can avoid in advance with the interference for postponing the descending pilot frequency of TD-LTE system to TD-SCDMA system ascending pilot frequency,
So as to avoid repeating configuring and the problems such as configuration does not find communication quality difference caused by disturbing between pilot tone, and with realizing letter
Just the advantages of quick.
Brief description of the drawings
Fig. 1 be first embodiment of the invention described in co-siting base stations TD-LTE frame collocation methods schematic flow sheet it
One；
Fig. 2 is a kind of TD-SCDMA system frame structure schematic diagram；
Fig. 3 is a kind of TD-LTE system frame structure schematic diagram；
The system-frame and the frame of TD-SCDMA system that Fig. 4 is configured by the 5th kind of special subframe configuration mode of TD-LTE system
Align schematic diagram；
The system-frame and the frame of TD-SCDMA system that Fig. 5 is configured by the 6th kind of special subframe configuration mode of TD-LTE system
Align schematic diagram；
The two of the schematic flow sheet of the TD-LTE frame collocation methods of co-siting base stations described in Fig. 6 first embodiment of the invention；
Fig. 7 be first embodiment of the invention described in co-siting base stations TD-LTE frame collocation methods schematic flow sheet it
Three；
Fig. 8 is the structural representation of the TD-LTE frame configuration devices of the co-siting base stations described in second embodiment of the invention.
Embodiment
Further details of elaboration is done to technical scheme with reference to Figure of description and specific embodiment.
First embodiment：
The present embodiment provides a kind of TD-LTE frame collocation methods of co-siting base stations, and methods described includes：
Step S110：Obtain the co-siting base stations in the designated area and account for the ratio run and have TD-SCDMA base station sum
Y；
Step S120：If the Y is more than co-located proportion threshold value, counts in designated area and opened TD-SCDMA system
The base station of UpPCH skews, which accounts for operation, the ratio N of TD-SCDMA system total number of base；
Step S130：Judge whether the N is less than shift ratio threshold value；If so, then use TD-LTE system descending pilot frequency
Time slot DwPTS：Protect time slot GP：Uplink pilot time slot UpPTS subframe proportioning is 9:3:2 sub-frame configuration mode carries out described
TD-LTE frames configure.
Wherein, the co-siting base stations are run simultaneously TD-SCDMA system and TD-LTE system.
TD-SCDMA system is 3rd generation mobile communication technology system, and TD-LTE system is to develop forth generation on the third generation
Mobile communication technology system.Because above two system all employs time division duplex networking technology, technically there is very big hold
Connecing property, when carrying out the erection of TD-LTE system, in order to reduce cost, it will usually which TD-LTE system is set to having run
In TD-SCDMA system, so as to co-siting base stations occur.The present embodiment methods described is applied on any stage co-siting base stations
TD-LTE frames configure, and be particularly suitable for use in has on the base station of TD-SCDMA system in operation, introduce TD-LTE system.
As shown in Fig. 2 the frame of TD-SCDMA system a length of 10ms when being usually one radio frames.The radio frames are divided again
It is all 5ms subframe for two durations.Each 5ms subframe is divided at seven a length of 675us regular time slots and 3 again
The special time slot of regular length.
The special time slot according to time order and function order successively include when a length of 75us descending pilot frequency time slot DwPTS, when
The a length of 75us uplink pilot time slot UpPTS for coming downwards to up protection time slot GP and duration 125us.The descending pilot frequency
Time slot is completing the descending access of client；The uplink pilot time slot is completing the multi-upstream access of client.
Seven regular time slots according to sequencing be successively time slot TS0, time slot TS1, time slot TS3, time slot TS4, when
Gap TS5, time slot TS6 and time slot TS7.Usual three special time slots it is continuously distributed and positioned at time slot TS0 and time slot TS1 it
Between.
The time slot TS0 is fixed as descending time slot, and the time slot TS1 is fixed as ascending time slot.
Two subframes have three special time slots in TD-SCDMA system from the foregoing, and each subframe respectively has under one
Row switches to up switching point.Duration between two transfer points is at intervals of 5ms.
In TD-SCDMA system, the number by flexibly configuring the uplink and downlink time slot in radio frames meets different answer
The rate requirement up and down needed with the business under scene, following table is common time slot proportion, and commonly used for descending time slot
DL:Ascending time slot UL=4：2 time slot proportion.Wherein, in table 1, D is expressed as descending time slot, and S is special time slot, and U is up
Time slot.
Table 1：TD-SCDMA system time slot configuration table
As shown in figure 3, the frame of TD-LTE system is duration 10ms radio frames, it is divided into two 5ms field, each
Field is made up of the subframe that five length are 1ms, i.e., described radio frames include ten 1ms subframe, and according to time sequencing
Successively subframe 0 is followed successively by subframe 9.
The subframe is divided into sub-frame of uplink, descending sub frame and special subframe again.Usual subframe 1 and subframe 6 are spy
Different subframe, subframe 0 and subframe 5 are fixed as descending sub frame, and subframe 2 and subframe 7 are fixed as sub-frame of uplink.
The sub-frame of uplink and descending sub frame can be two 0.5ms time slot composition again.
The special subframe according to time order and function order again successively include descending pilot frequency time slot DwPTS, protection time slot GP with
And uplink pilot time slot UpPTS.
, can be with flexible configuration one by adjusting the proportioning of sub-frame of uplink and descending sub frame in TD-LTE system frame structure
The number of sub-frame of uplink and descending sub frame in individual radio frames, so as to realize the requirement of the speed of uplink and downlink, by configuring spy
The structure of different subframe can realize the control of the transmitting duration of ascending pilot frequency and descending pilot frequency.Table 2 is matched somebody with somebody for TD-LTE subframes
Put table, wherein # represents subframe, D be represent corresponding to subframe be descending sub frame, S represent corresponding to subframe be sub-frame of uplink, U tables
Subframe corresponding to showing is sub-frame of uplink.
Table 2：TD-LTE sub-frame configuration tables
TDD LTE systems are in order to overcome the intersymbol interference and inter-carrier interference that multidiameter delay is brought, before introducing circulation
Sew (Cyclic Prefix, CP) and be used as protection interval.CP includes common CP and extension CP, according to different CP scenes, GP and
UpPTS configuration is slightly different.CP length is relevant with covering radius, generally configures common CP (Normal CP) i.e.
Can.
Table 3：TD-LTE special subframe allocation lists
In table 3, configuration row in 0-8 corresponded to 0-8 kind configuration modes, the present embodiment select the 5th in special subframe with
And special subframe is the configuration mode of the 5th kind of special subframe of common CP in upper table and matching somebody with somebody for the 6th kind of special subframe in the 6th
Put mode.
In order to realize on co-siting base stations, the mutual of uplink and downlink signals of TD-LTE system and TD-SCDMA system is avoided to do
Disturb, when the special subframe for carrying out the TD-LTE system is set, there is provided the 5th kind of special subframe and the 6th kind of special subframe.
The 5th kind of special subframe is that 1ms is carried out into duration distribution by following proportioning：Descending pilot frequency time slot DwPTS：Protect
Protect time slot GP：Uplink pilot time slot UpPTS=3:9:2.
The 6th kind of special subframe is that 1ms is carried out into duration distribution by following proportioning：Descending pilot frequency time slot DwPTS：Protect
Protect time slot GP：Uplink pilot time slot UpPTS=9:3:2.It follows that used in step S130 for the 6th of TD-LTE system
Kind special subframe configuration mode carries out system-frame configuration.
On the co-siting base stations, if TD-LTE system is carried out using the 6th kind of special subframe configuration mode to TD-LTE frames
Configuration, in carrying out practically, to avoid interference of the descending pilot frequency of TD-LTE system to TD-SCDMA system ascending pilot frequency, need
TD-SCDMA system UpPCH skews are used to carry out the skew of ascending pilot frequency launch time.
The TD-SCDMA system UpPCH is offset：By either statically or dynamically adjustment technology in TD-SCDMA frames, make
The launch time of row pilot tone to slot offset where ascending time slot TS1 so that ascending pilot frequency is partly or entirely in ascending time slot
Launch in TS1, so as to realize that ascending pilot frequency is offset, to avoid the ascending pilot frequency between adjacent base station from disturbing.
The designated area is can the region that divided with administrative unit or the area specified according to networking requirements
Domain.The step S110 can specifically be divided into it is following step by step.TD- after being run in designated area is counted first
SCDMA total number of base n1, secondly statistics open the base station number n2 of TD-SCDMA UpPCH skews, then described in being obtained by n1/n2
Ratio N.The statistics of the N specifically can be by from Operation ＆ Maintenance System (Optimization and Maintenance
Centre, OMC) parameter of each base station is obtained, realize statistics.The ratio N is bigger, then illustrates that the intersection between adjacent base station is covered
Lid is more serious, and most of base station can not be further carried out TD-SCDMA system UpPCH skews；The N is smaller, then illustrates adjacent
Alternate covering between base station is smaller, and most of base station can also carry out TD-SCDMA system UpPCH skews, therefore can select the 6th
Kind special subframe carries out the frame configuration of TD-LTE system.
According to above-mentioned principle, relative to existing method, the present embodiment methods described further comprises the step S130.In step
In rapid S130 by the ratio N compared with default shift ratio threshold value, it can be selected if N is less than shift ratio threshold value
The 6th kind of special subframe configuration mode in TD-LTE system carries out TD-LTE frame structure configurations.Specific TD-LTE frames are matched somebody with somebody
The method put can use any one method of the prior art to realize.The shift ratio threshold value is current common for weighing
Whether the TD-LTE system on the base station of location can run the parameter of the 6th kind of special subframe, can be actually measure or analog simulation
Parameter.Wherein, the shift ratio threshold value can be 0.4,0.5,0.6,0.7 or any one between 0.8 or 0.4-0.8
Designated value, specific optimal threshold can be determined according to QoS requirement and communication environment.
In judging for the step S120, Y value is less than co-located proportion threshold value, then explanation runs TD-SCDMA system simultaneously
It is less with the base station number of TD-LTE system, it can be selected from the base station that multiple operations have TD-SCDA systems, without entering
The subsequent step such as row ratio N statistics or offset average i calculating, directly uses the 5th kind or the 6th kind of special subframe
Carry out TD-LTE frame configurations.The co-located proportion threshold value can be set according to the actual requirements, and such as 50%~90%, specifically
Such as 80%, 60%
As shown in figure 4, system-frame is configured by TD-SCDMA system frame and the 5th kind of special subframe configuration mode of TD-LTE
Schematic diagram after alignment, wherein DL->UL represents the conversion of downstream-to-upstream, UL->What DL was represented is to be up to descending conversion,
Chronomere's microsecond that wherein us is represented, represent correspondence position time slot or the duration of subframe.From illustrating, TD-LTE system
The DwPTS of 5th kind of special subframe and the TD-SCDMA system frame UpPTS stagger completely, will not produce interference, therefore the 5th
Kind special subframe can be in the case of wireless environment serious interference, the configuration of TD-LTE system frame on co-siting base stations.Wherein,
UL in figure is sub-frame of uplink corresponding to representing, DL is expressed as descending sub frame, and descending pilot frequency time slot, the GP of DwPTS expressions are guarantor
Protect time slot, UpPTS is uplink pilot time slot.Therefore the 5th kind of special subframe can be used in the case of wireless environment serious interference
The configuration of TD-LTE system frame on co-siting base stations.
As shown in figure 5, after being alignd for the 6th kind of special subframe of TD-SCDMA system frame and TD-LTE with the system-frame postponed
Schematic diagram, chronomere's microsecond that wherein us is represented, represent the duration of correspondence position time slot or subframe.From diagram, TD-
The DwPTS of 5th kind of special subframe of LTE system conflicts with the UpPTS parts of the TD-SCDMA system frame, and battleground is pair
The time corresponding to #8 and #9 answered.If desired # avoids mutually dry between TD-LTE and TD-SCDMA on co-siting base stations
Disturb, the TD-SCDMA system must carry out UpPTS skews.In Figure 5, when TS#0 represents the 0th of TD-SCDMA system frame
Gap, TS#1 represent the 1st time slot of TD-SCDMA system frame, and TS#2 represents the 2nd time slot of TD-SCDMA system frame, TS#3 tables
Show the 3rd time slot of TD-SCDMA system frame, TS#4 represents the 4th time slot of TD-SCDMA system frame, and TS#5 represents TD-
5th time slot of SCDMA system-frames, TS#6 represent the 6th time slot of TD-SCDMA system frame.In TD-LTE system frame,
Slot represents a subframe, and wherein DW is descending pilot frequency time slot, GP is protection time slot and UP is uplink pilot time slot.
Therefore the TD-LTE frame collocation methods of the co-siting base stations described in the present embodiment, avoid existing method do not consider it is co-located
TD-SCDMA system UpPCH drift conditions on base station, the 5th kind or the 6th kind special subframe configuration mode of the selection of blindness, cause
Configure the TD-LTE system on rear co-siting base stations and the problem of TD-SCDMA system pilot tone interferes, have and realize letter
Just, with the good communication quality for postponing co-siting base stations offer the advantages that.
In order to further judge to have been carried out the drift condition of the base station of TD-SCDMA system UpPCH skews, so as to
TD-LTE frame configurations are preferably carried out, the present embodiment methods described has carried out further improvement, specific as follows：
As shown in fig. 6, the TD-LTE frame collocation methods of the present embodiment co-siting base stations include：
Step S210：Obtain the co-siting base stations in the designated area and account for the ratio run and have TD-SCDMA base station sum
Y；
Step S220：When co-located ratio Y is more than co-located proportion threshold value, counts in designated area and opened TD-SCDMA systems
The base station of system UpPCH skews, which accounts for operation, the ratio N of TD-SCDMA system total number of base；
Step S230：Judge whether the N is less than shift ratio threshold value, if being then transferred to step S260；If otherwise enter
Step S240；
Step S240：Statistics has opened the offset of TD-SCDMA system UpPCH skews, and calculates offset average i；
Step S250：Judge whether the i is less than offset threshold value, the i values then enter step less than offset threshold value
S260, the i values are not less than offset threshold value, then into step S270；The design of the specific offset threshold can basis
Systematic parameter is configured, in the present embodiment the conventional parameter based on TD-SCDMA system, and preferably described offset threshold value is
53.Usual offset threshold value is bigger, and it is more to represent that the time for launching ascending pilot frequency offsets toward TS1 directions；Generally carry out UpPCH
During skew, in addition to TS1 is displaced to, TS2 and TS3 can also be displaced to, it is only necessary to ensure the side not across time slot switching point
Boundary.When offset is 53, then the time retardation of ascending pilot frequency transmitting is to the end of time slot TS1 second data division
Corresponding time point.
Step S260：The TD-LTE frames configuration is carried out using the 6th kind of special subframe configuration mode of TD-LTE system；
Step S270：Using DwPTS in TD-LTE system：GP：UpPTS subframe proportioning is 3:9:2 sub-frame configuration side
TD-LTE frames described in formula configure.It can be seen from above-mentioned table 3, DwPTS：GP：UpPTS subframe proportioning is 3:9:2 sub-frame configuration
Mode is the 5th kind of special subframe configuration mode of TD-LTE system.
The TD-SCDMA system UpPCH skews have been carried out, then there will be corresponding offset, usual offset is bigger, says
The offset of from the ascending pilot frequency of bright TD-SCDMA system to ascending time slot TS1 are bigger, the possibility that can not be further offset again
Property is bigger.
In the present embodiment, when the ratio N is more than shift ratio threshold value, the i values is further counted, pass through institute
I and offset threshold value comparison are stated, obtains the judgement for the situation that can carry out TD-SCDMA system UpPCH skew base station numbers again.
If the i values are less than default offset threshold value, can still the 6th kind of special subframe configuration mode be used to carry out TD-LTE frames
Configuration, otherwise the 5th kind of special subframe configuration mode will be used to carry out TD-LTE frame configurations.
In the present embodiment, it is further perfect when the N is not less than shift ratio threshold value, TD-LTE frames configuration side
Method, there is the advantages of realizing easy and co-siting base stations good communication quality.
TD-SCDMA system uses A frequency ranges, frequency range 2010MHz-2025MHz.
The available frequency range of TD-LTE system includes D frequency ranges, E frequency ranges and F-band.The frequency range of the D frequency ranges
2570MHz-2620MHz；The frequency range 2300MHz-2400MHz of the E frequency ranges；The frequency range of the F-band is
1880MHz-1920MHz。
By A frequency ranges respectively compared with D frequency ranges, E frequency ranges and F-band, the frequency range of F-band and A frequency ranges is most
It is close, and found by verifying：F-band and A frequency ranges, because frequency of use dimensional discrepancy is small can be with shared radio frequency antenna and radio frequency
Extension unit.Therefore in order to further save cost, TD-LTE system uses on the co-siting base stations in the present embodiment frequency
Section is F-band.
Further when the TD-LTE system is F-band using frequency range, the TD-LTE system on the co-siting base stations
And the TD-SCDMA system shared radio frequency extension unit, further simplify co-siting base stations structure, reduce hardware into
Originally and cost is laid, and improves the effective rate of utilization of Remote Radio Unit.
In specific implementation process, can also by TD-LTE system on each base station in real-time statistics designated area and
The situation that the ascending pilot frequency of TD-SCDMA system is disturbed, timely TD-LTE frame structure is adjusted, specific adjustment
Method uses any one above-mentioned method in the present embodiment.
As shown in fig. 7, specifically, following steps can be used when being configured to the TD-LTE system frame on co-siting base stations：
Step 1：The region of selected planning construction TD-LTE base stations, determine the frequency range that TD-LTE system is selected；
The TDD frequency ranges of main flow are the 38th section at present：2570MHz-2620MHz, i.e. D frequency ranges；39th section：1880MHz-
1920MHz, F-band；And the 40th section：2300MHz-2400MHz, E frequency range.Because TD-SCDMA system uses A frequency ranges, i.e.,
2010MHz-2025MHz, the F-band with the 39th section is nearest, so, when TD-LTE system uses F-band, shared radio frequency distal end
The difficulty of unit and antenna is minimum.Patent of the present invention mainly considers that TD-LTE system is total to using during F-band with TD-SCDMA system
Uplink pilot time slot interference bypassing method during RRU.
Step 2：Region TD-SCDMA base station is selected from step 1, and counts selected TD-SCDMA base station and checks card
The quantity of UpPTS skews, to count out shift ratio N and each TD-SCDMA offsets average；
From step 1 select region in filter out built completion, normal operation TD-SCDMA base station quantity, then
Count it and open the cell number of UpPCH skews, calculate it and account for the accounting of whole cells,
M is the TD-SCDMA cells (formula one) for opening UpPCH
It is worth as N is more than one, such as 80, then shows that the UpPTS time slot of the block region majority TD-SCDMA base station has been disturbed,
UpPCH skews have been opened to evade interference, have been shown, the overlapping level of coverage in the block region between TD-SCDMA base station is serious.
Statistics opens the UpPCH deviant i of UpPCH skews base station,
Wherein, M is the TD-SCDMA cells for opening UpPCH.
Calculate the average value of the offset for the cell for opening UpPCH skews, it is known that TD-SCDMA cells in the region
UpPCH is disturbed degree.
Step 3：The TD-LTE base stations in the region and TD-SCDMA base station colocation site are selected, and calculate co-located ratio Y；
After if TD-LTE system propagation model is selected and corrected, with reference to first-phase scale of investment, it will calculate TD-
The quantity of LTE base station, the ratio of co-located TD-SCDMA base station shared by TD-LTE base stations is then calculated, if this ratio is more than one
Individual Y value, illustrate that the co-located ratio of TD-LTE base stations and TD-SCDMA base station is very high.At this moment, it is necessary to consider that TD-LTE system uses F
The frequency of frequency range is relatively low, and radio transmission is farther compared with TD-SCDMA base station, and is total to terrace with TD-SCDMA base station, so, TD-LTE
The overlapped coverage degree of system is more serious than TD-SCDMA base station.
Step 4：The ratio of UpPTS skews is opened according to co-located ratio, TD-SCDMA and opens the skew of UpPTS skews
Average is measured, judges whether TD-LTE system can use special subframe configuration mode in the 6th；
The co-located ratios of TD-LTE being calculated according to step 3, can obtain the serious journey of the overlapped coverage of TD-LTE system
Degree；
If the co-located ratios of TD-LTE are higher than a Y value, then build overlapping between the TD-LTE system base station of completion
Covering will be more serious than TD-SCDMA system；If the co-located ratios of TD-LTE are high, less than Y value or less than one section, then build
Overlapped coverage situation between the TD-LTE system base station of completion is also not up to the order of severity；
As the co-located ratios of TD-LTE are higher than Y value, then the TD-SCDMA system being calculated according to step 2 opens UpPCH
, with reference to formula one, the result of calculation of formula two, there are following three kinds of situations the position of ratio and the UpPCH skew of skew：
If 1) TD-SCDMA base station in the region opens the ratio height of UpPCH skews, illustrate that base station is overlapping more than N% and cover
Lid degree than more serious, the DwPTS time slots of TD-SCDMA base station overlapped coverage to peripheral base station UpPTS time slot time slot,
Now, after the colocation site of TD-LTE base stations, common antenna will cause further overlapped coverage, it is necessary to further judge skew
Whether if offset threshold value offset average is also greater than offset threshold value for the average value of amount, if then without using special subframe the 6th
Kind configuration mode carries out configuration TD-LTE system frame and configured.
If 2) ratio of the TD-SCDMA base station opening UpPCH skews in the region is higher, but there is also certain proportion
(such as：More than 50%, it is less than N% again), the region need to be paid close attention to and whether there is external interference source, and TD-SCDMA base station UpPCH
The interference statistics of deviant and ascending time slot TS1, TS2, such as the negotiable solution of external interference source, and interference statistics are reasonable
In section, then the 6th kind of configuration mode of special subframe can be used in the co-located TD-LTE base stations in the region, otherwise, it is proposed that TD-LTE
System uses the 5th kind of configuration mode of special subframe；
If 3) ratio of region TD-SCDMA base station opening UpPCH skews is low, illustrate that origin base station covering is preferable,
Overlapped coverage degree is not serious, and the 6th kind of configuration mode of special subframe can be used in co-located TD-LTE system.
Step 5：TD-LTE special subframe configuration modes are determined, open TD-LTE base stations；
According to the result of calculation of above-mentioned steps 4, determine that the TD-LTE system of selection area is configured using which kind of special subframe
Mode, TD-LTE base stations are opened according to plan.
Step 6：Count the UpPTS time slot of TD-LTE and TD-SCDMA system respectively is disturbed situation, finds to be disturbed
Base station, optimize and revise immediately.
The UpPTS time slot of periodic statistical TD-LTE and TD-SCDMA system is disturbed situation, because TD-LTE is built just
Phase, user is less, need to pay close attention to the interference statistics index of TD-SCDMA base station business busy and idle, find the base being disturbed
Stand, optimize and revise immediately.
Summary, the TD-LTE frame collocation methods of co-siting base stations described in the present embodiment, not only considers on co-siting base stations
TD-LTE system upward signal and TD-SCDMA system upward signal and TD-LTE system downstream signal and TD-SCDMA system
The synchronization of downstream signal, it is also contemplated that interference and the skew of TD-SCDMA pilot tones between the pilot tone of different system, so as to completing to set
Co-siting base stations afterwards, high-quality TD-SCDMA and TD-LTE communication service can be provided simultaneously.
Second embodiment：
The present embodiment provides a kind of TD-LTE frame configuration devices of co-siting base stations, wherein, the co-siting base stations are run simultaneously
There are TD-SCDMA system and TD-LTE system.As shown in figure 8, described device includes：
First statistic unit 310, accounting for operation obtaining the co-siting base stations in the designated area has TD-SCDMA bases
Stand total ratio Y；
Second statistic unit 320, when Y is more than co-located proportion threshold value, to count in designated area and open TD-
The base station of SCDMA systems UpPCH skews, which accounts for operation, the ratio N of TD-SCDMA system total number of base；
Judging unit 330, to the N and the multilevel iudge of shift ratio threshold value；
Dispensing unit 340, to use TD-LTE system descending pilot frequency time slot when the N is less than shift ratio threshold value
DwPTS：Protect time slot GP：Uplink pilot time slot UpPTS subframe proportioning is 9:3:2 sub-frame configuration mode carries out the TD-
LTE frames configure.
The present embodiment provides a kind of specific for the TD-LTE frame collocation methods of the co-siting base stations described in first embodiment
Physics realization device.The 6th kind of special subframe be：Descending pilot frequency time slot DwPTS, protection time slot GP and ascending pilot frequency
Time slot UpPTS=9:3:2.
The specific physical arrangement of the judging unit 330 can be the integrated circuit of comparator including comparator, and operation has
Realize single-chip microcomputer, digital processing and programming device of multilevel iudge function etc..
The dispensing unit 340 can be integrated in dispensing unit or the management co-located base on co-siting base stations
The network element management device stood, specific the structure same central processing unit, single-chip microcomputer, numeral that can realize above-mentioned configuration feature
The component such as processing and programming device.
Specifically, the TD-LTE frames configuration device can also be including storage medium, processor, communication interface and total
The equipment of line.Functional unit 310-340 institutes functional software described in achievable the present embodiment is stored with the storage medium
Or program.To run the software or program, the communication interface is used to receive and send messages the processor, bus connection institute of institute
State processor, communication interface and storage medium.The storage medium various storage mediums such as including ROM, RAM and Flash.
The communication interface can be serial communication interface or parallel communication interface, and communication interface is in a unlimited number in one.It is described
Bus it is same can be serial communication bus or parallel communication bus, specific bus structures are according to the knot of each part of connection
Structure is set.
The present embodiment is the TD-LTE system frame collocation method of co-siting base stations described in first embodiment, there is provided one kind tool
Body realizes physical unit, same to have configuration so as to carry out TD-LTE frame configurations using the configuration device described in the present embodiment
Simply, the advantages of good communication quality that co-siting base stations provide.
As further improvement of this embodiment, the 3rd statistic unit is also included in the device described in the present embodiment；
3rd statistic unit, to when the N is not less than shift ratio threshold value, statistics has opened TD-SCDMA systems
The offset of system UpPCH skews, and calculate offset average i；
The judging unit, also to judge whether the i is less than offset threshold value,
The dispensing unit, also to when the i is less than offset threshold value, using the DwPTS of TD-LTE system：GP：
UpPTS subframe proportioning is 9:3:2 sub-frame configuration mode carries out the TD-LTE frames configuration；And in the i not less than skew
When measuring threshold value, using DwPTS in TD-LTE system：GP：UpPTS subframe proportioning is 3:9:2 sub-frame configuration mode carries out institute
State the configuration of TD-LTE frames.
By calculating of the statistic unit to i values, the judging unit enters to i and the multilevel iudge of offset threshold value
One step obtains can further carry out the base station number of TD-SCDMA system UpPCH skews under current radio environment, then carry out co-located base
TD-LTE frames of standing configure, and can further optimize the configuration of TD-LTE frames.
By the acquisition to Y value and the calculating of Y value and co-located proportion threshold value, can determine whether out currently form co-siting base stations
Ratio, so as to judge whether to need the calculating of further follow-up N Data-Statistics and i values.
As further improvement of this embodiment, the frequency range that TD-LTE system uses on the co-siting base stations is F-band.By
What it is in TD-SCDMA system generally use is A frequency ranges, and frequency difference is small between the frequency of use of the F-band of A frequency ranges and TD-LTE system, can
With common antenna and Remote Radio Unit, cost can be further saved.Therefore when the TD-LTE system uses F-band,
TD-LTE system and the TD-SCDMA system shared radio frequency extension unit on the co-siting base stations.
Summary, present embodiments provide one kind and be used for TD-LTE frame configuration devices on co-siting base stations, for TD-LTE
When frame configures, there is the advantages of simple and fast；And complete to match somebody with somebody and postpone, TD-LTE system and TD-SCDMA system on co-siting base stations
Between not only uplink and downlink signals it is synchronously good, and the interference between up-downgoing pilot tone is small, can provide high-quality telecommunication service quality, no
Interfered with each other in the presence of the pilot tone of discovery TD-LTE system and TD-SCDMA system after coming into operation, and then cause client can not be just
The problem of often access co-siting base stations are eated dishes without rice or wine.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention.
Claims (8)
1. a kind of TD-LTE frame collocation methods of co-siting base stations, the co-siting base stations run simultaneously have TD-SCDMA system and
TD-LTE system, it is characterised in that methods described includes：
Obtain the co-siting base stations in designated area and account for the ratio Y for running and having TD-SCDMA base station sum；
If the Y is more than co-located proportion threshold value, the base station that TD-SCDMA system UpPCH skews have been opened in designated area is counted
Accounting for operation has the ratio N of TD-SCDMA system total number of base；
Judge whether the N is less than shift ratio threshold value, if then using TD-LTE system descending pilot frequency time slot DwPTS：Protection
Time slot GP：Uplink pilot time slot UpPTS subframe proportioning is 9:3:2 sub-frame configuration mode carries out the TD-LTE frames configuration.
2. according to the method for claim 1, it is characterised in that methods described also includes：
The N is not less than shift ratio threshold value, then counts the offset for having opened TD-SCDMA system UpPCH skews, and calculate
Draw offset average i；
Judge whether the i is less than offset threshold value,
If so, then use the DwPTS of TD-LTE system：GP：UpPTS subframe proportioning is 9:3:2 sub-frame configuration mode is carried out
The TD-LTE frames configuration；
If it is not, then use DwPTS in TD-LTE system：GP：UpPTS subframe proportioning is 3:9:2 sub-frame configuration mode is carried out
The TD-LTE frames configuration.
3. method according to claim 1 or 2, it is characterised in that TD-LTE system uses F frequencies on the co-siting base stations
Section.
4. according to the method for claim 3, it is characterised in that TD-LTE system on the co-siting base stations and described
TD-SCDMA system shared radio frequency extension unit.
5. a kind of TD-LTE frame configuration devices of co-siting base stations, the co-siting base stations run simultaneously have TD-SCDMA system and
TD-LTE system, it is characterised in that described device includes：
First statistic unit, to obtain the co-siting base stations in designated area account for operation have TD-SCDMA base station sum ratio
Y；
Second statistic unit, when the Y is more than co-located proportion threshold value, to count in designated area and open TD-SCDMA systems
The base station of system UpPCH skews, which accounts for operation, the ratio N of TD-SCDMA system total number of base；
Judging unit, to the N and the multilevel iudge of shift ratio threshold value；
Dispensing unit, to when the N is less than shift ratio threshold value, using TD-LTE system descending pilot frequency time slot DwPTS：Protect
Protect time slot GP：Uplink pilot time slot UpPTS subframe proportioning is 9:3:2 sub-frame configuration mode carries out the TD-LTE frames and matched somebody with somebody
Put.
6. device according to claim 5, it is characterised in that described device also includes the 3rd statistic unit；
3rd statistic unit, also to when the N is not less than shift ratio threshold value, statistics has opened TD-SCDMA system
The offset of UpPCH skews, and calculate offset average i；
The judging unit, also judging whether the i is less than offset threshold value；
The dispensing unit, also to when the i is less than offset threshold value, using the DwPTS of TD-LTE system：GP：UpPTS
Subframe proportioning be 9:3:2 sub-frame configuration mode carries out the TD-LTE frames configuration；And it is not less than offset threshold value in the i
When, using DwPTS in TD-LTE system：GP：UpPTS subframe proportioning is 3:9:2 sub-frame configuration mode carries out the TD-
LTE frames configure.
7. the device according to claim 5 or 6, it is characterised in that TD-LTE system uses F frequencies on the co-siting base stations
Section.
8. device according to claim 7, it is characterised in that TD-LTE system on the co-siting base stations and described
TD-SCDMA system shared radio frequency extension unit.
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| CN101128035A (en) * | 2006-08-18 | 2008-02-20 | 中兴通讯股份有限公司 | Inter-channel timing method in time division code division multi-address system |
| CN101631316A (en) * | 2008-07-16 | 2010-01-20 | 中国移动通信集团公司 | Method and equipment for improving frequency spectrum utilization rate in TDD system |
| WO2013035974A1 (en) * | 2011-09-07 | 2013-03-14 | Lg Electronics Inc. | Method for transmitting uplink signals from a user equipment to a base station in a wireless communication system and method for the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101128035A (en) * | 2006-08-18 | 2008-02-20 | 中兴通讯股份有限公司 | Inter-channel timing method in time division code division multi-address system |
| CN101631316A (en) * | 2008-07-16 | 2010-01-20 | 中国移动通信集团公司 | Method and equipment for improving frequency spectrum utilization rate in TDD system |
| WO2013035974A1 (en) * | 2011-09-07 | 2013-03-14 | Lg Electronics Inc. | Method for transmitting uplink signals from a user equipment to a base station in a wireless communication system and method for the same |
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