CN102638807A - Downlink interference determining method and device - Google Patents
Downlink interference determining method and device Download PDFInfo
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Abstract
The invention provides a downlink interference determining method and device. The method is applied into a system including an omni transmission sectorized receive (OTSR) base station. For the selected pixel point of a main service cell, calculating the reference signal receiving power covering the selected pixel point, of transmitting signals of all cells, wherein power division cells of OTSR antennas in the OTSR base station are respectively calculated as single cells; selecting interference cells of the pixel points from the cells; and according to the reference signal receiving power of transmitting signals of all cells, covering the selected pixel point, determining the total downlink interference of the pixel points. The device comprises a calculation module, a selection module and a determination module. According to the invention, the downlink interference simulation configured by the OTSR base station in an LTE (Long Term Evaluation) network, and later-period network performance evaluation and capacity simulation can be accurately simulated.
Description
Technical field
The present invention relates to the network planning and emulation in the wireless communication field; Particularly; Relate to a kind of based on OTSR (Omni Transmission Sectorized Receive; The theaomni-directional transmission directional reception) the definite method and the device of the descending interference of technology in the LTE network can be applied to the planning and designing and the network capacity emulation of new network or dilatation network.
Background technology
At LTE (Long Term Evolution; Long evolving system) the networking initial stage; The covering quality of wireless network can directly have influence on user's experience, simultaneously with lower one-tenth original build one effectively cover and capacity can with number of users increase progressively and the wireless network of smooth evolution also becomes the problem that operator is concerned about the most.The OTSR technology is exactly under this background, one of solution that is proposed for the networking initial investment of saving, protect mobile operator.Setting up of OTSR base station is consistent with three sector configuration of standard, carries a plurality of antenna directions through a logic district, adopts theaomni-directional transmission, directional reception, obtains the coverage effect of Directing Station with the collocation form at omnidirectional station.
Under the traditional mode, wireless network planning emulation is mainly carried out to three sector base stations of standard, also mainly is in scenes such as remote districts and highway and in 2G/3G, merge the OTSR technology.Therefore few for the simulating scenes of the network planning of OTSR site type.Because the interference calculation in the legacy system emulation does not also relate to such scene, descending interference simulation and the network performance evaluation in later stage and the capacity emulation that therefore can't accurately simulate OTSR base station configuration in the LTE network.
Summary of the invention
The technical problem that the present invention will solve provides a kind of descending interference based on theaomni-directional transmission directional reception (OTSR) technology and confirms method and device, with the descending interference simulation of OTSR base station configuration in the accurate simulation LTE network.
In order to solve the problems of the technologies described above, the invention provides a kind of descending interference and confirm method, be applied to comprise the system of theaomni-directional transmission directional reception (OTSR) base station, this method comprises:
To the selected pixel of main Serving cell, calculate each sub-district and transmit and cover the Reference Signal Received Power of this selected pixel, wherein, calculate respectively as independent sub-district each the OTSR antenna merit branch sub-district under the said OTSR base station;
From said each sub-district, choose the interfered cell of said pixel;
Transmit according to the said interfered cell of choosing and to cover the Reference Signal Received Power of said pixel, confirm descending total interference of said pixel.
Further, said method also has following characteristics: the step of from said sub-district, choosing the interfered cell of said pixel comprises:
The Reference Signal Received Power that choosing transmits covers said pixel is greater than the sub-district of the predetermined threshold interfered cell as said pixel; Perhaps
Choosing transmits covers the interfered cell of R the highest sub-district of the Reference Signal Received Power of said pixel as said pixel, and R is a preset value, R >=1.
Further, said method also has following characteristics: it is following to calculate the transmit mode of the Reference Signal Received Power M that covers the selected pixel of main Serving cell of a sub-district:
When said pixel is positioned at the central area of said main Serving cell, like the fringe region of this sub-district and the same frequency of fringe region of said main Serving cell, then M=P
1Like the fringe region of this sub-district and the fringe region alien frequencies of said main Serving cell, then M=P
1/ 2+P
2
When said pixel is positioned at the fringe region of said main Serving cell, like the fringe region of this sub-district and the same frequency of fringe region of said main Serving cell, then M=P
2Like the fringe region of this sub-district and the fringe region alien frequencies of said main Serving cell, then M=P
1/ 2,
Wherein, P
1For this sub-district transmitting on the frequency range of central area covered the Reference Signal Received Power of said pixel, P
2For transmitting on this sub-district edge region frequency range covered the Reference Signal Received Power of said pixel.
Further, said method also has following characteristics: if said sub-district is OTSR antenna merit branch sub-district, then
P
1=said OTSR antenna merit is divided transmitting power-10log (N)+antenna gain-total losses of logic district on the frequency range of central area under the sub-district;
P
2=said OTSR antenna merit is divided transmitting power-10log (N)+antenna gain-total losses on the logic district edge region frequency range under the sub-district;
Wherein, N equals the number of the radio-frequency antenna of the affiliated logic district in said OTSR antenna merit branch sub-district.
Further; Said method also has following characteristics: if comprise the OTSR antenna merit branch sub-district that belongs to same logic district more than two in the said interfered cell of choosing; Said transmitting according to the said interfered cell of choosing covered the Reference Signal Received Power of said pixel, confirms that the step of descending total interference of said pixel comprises:
Travel through said interfered cell one by one; The OTSR antenna merit branch sub-district that belongs to same logic district transmitted multiply by a commutation factor after the Reference Signal Received Power addition of covering said pixel; And then the Reference Signal Received Power addition that transmits and cover said pixel with other interfered cells; Obtain descending total interference of said pixel, wherein, 0＜said commutation factor＜1.
In order to address the above problem, the present invention also provides a kind of device of confirming descending interference, is applied to comprise the system of theaomni-directional transmission directional reception (OTSR) base station, comprising:
Computing module is used for the selected pixel to main Serving cell, calculates each sub-district and transmits and cover the Reference Signal Received Power of this selected pixel, and wherein, calculate respectively as independent sub-district each the OTSR antenna merit branch sub-district under the said OTSR base station;
Choose module, be used for choosing the interfered cell of said pixel from said each sub-district;
Determination module is used for choosing interfered cell that module chooses and transmitting and cover the Reference Signal Received Power of said pixel according to said, confirms descending total interference of said pixel.
Further, said apparatus also has following characteristics: the said module of choosing comprises one of lower unit at least:
First chooses the unit, is used to choose transmit the Reference Signal Received Power that covers said pixel greater than the sub-district of the predetermined threshold interfered cell as said pixel; Perhaps
Second chooses the unit, is used to choose transmit the highest R the sub-district of the Reference Signal Received Power that covers said pixel as the interfered cell of said pixel, and R is a preset value, R >=1.
Further, said apparatus also has following characteristics: it is following that said computing module calculates the transmit mode of the Reference Signal Received Power M that covers the selected pixel of main Serving cell of a sub-district:
When said pixel is positioned at the central area of said main Serving cell, like the fringe region of this sub-district and the same frequency of fringe region of said main Serving cell, then M=P
1Like the fringe region of this sub-district and the fringe region alien frequencies of said main Serving cell, then M=P
1/ 2+P
2
When said pixel is positioned at the fringe region of said main Serving cell, like the fringe region of this sub-district and the same frequency of fringe region of said main Serving cell, then M=P
2Like the fringe region of this sub-district and the fringe region alien frequencies of said main Serving cell, then M=P
1/ 2,
Wherein, P
1For this sub-district transmitting on the frequency range of central area covered the Reference Signal Received Power of said pixel, P
2For transmitting on this sub-district edge region frequency range covered the Reference Signal Received Power of said pixel.
Further, said apparatus also has following characteristics: if said sub-district is OTSR antenna merit branch sub-district, then
P
1=said OTSR antenna merit is divided transmitting power-10log (N)+antenna gain-total losses of logic district on the frequency range of central area under the sub-district;
P
2=said OTSR antenna merit is divided transmitting power-10log (N)+antenna gain-total losses on the logic district edge region frequency range under the sub-district;
Wherein, N equals the number of the radio-frequency antenna of the affiliated logic district in said OTSR antenna merit branch sub-district.
Further, said apparatus also has following characteristics: if comprise the OTSR antenna merit branch sub-district that belongs to same logic district more than two in the said interfered cell of choosing, then said determination module confirms that descending total interference of said pixel is specially:
Travel through said interfered cell one by one; The OTSR antenna merit branch sub-district that belongs to same logic district transmitted multiply by a commutation factor after the Reference Signal Received Power addition of covering said pixel; And then the Reference Signal Received Power addition that transmits and cover said pixel with other interfered cells; Obtain descending total interference of said pixel, wherein, 0＜said commutation factor＜1.
To sum up, the present invention provides a kind of descending interference based on theaomni-directional transmission directional reception (OTSR) technology to confirm method and device, can improve the cost of network plan simulation precision and the optimization of minimizing later stage, can better reflect the real network performance of LTE.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 divides the schematic diagram of sub-district for the OTSR merit;
Fig. 2 is the sketch map that Q is positioned at the Non-overlapping Domain of OTSR merit branch sub-district covering;
Fig. 3 is the sketch map that Q is positioned at the overlapping region of OTSR merit branch sub-district covering;
Fig. 4 confirms the flow chart of method for the descending interference of the embodiment of the invention;
Fig. 5 fixs the schematic representation of apparatus that row disturbs really for the embodiment of the invention.
Embodiment
Main purpose of the present invention is to provide a kind of descending interference based on the OTSR technology to confirm method and device, and in the LTE network plan simulation, it is definite that the base station configuration that need take all factors into consideration standard base station configuration and OTSR merit divided antenna is carried out descending interference.
In order to understand the present invention better, the present invention is done to describe further below in conjunction with accompanying drawing and specific embodiment.
Fig. 1 divides the schematic diagram of sub-district for the OTSR merit; As shown in Figure 1, according to the mode of merit divided antenna, a logic district is passed through splitter at a RRU (Remote Radio Unite; Far-end RF module) goes up configuration a plurality of RF (Radio Frequency, radio frequency) antenna.A plurality of RF antennas are shared a cover RRU and a BBU (Building Baseband Unite, indoor baseband processing unit), therefore belong to a logic district.
Before calculating interference, need carry out resource allocation and ICIC (Inter CellInterference Coordination, Inter-Cell Interference Coordination) frequency allocation to the sub-district of planning.For the RF antenna that each merit branch is gone out (being OTSR merit branch sub-district), the transmitting power-10log of its transmitting power=sub-district (N), N are the RF number of antenna of this logic district.
Interference for certain pixel (Pixel point) Q of main Serving cell; Be to cover RSRP (the Reference Signal Receiving Power that Q is ordered in network plan simulation through the interfered cell that adds up; Reference Signal Received Power) draws, the quantity A and/or the thresholding B that select interfered cell can be set simultaneously.For interfered cell is standard sub-district or OTSR merit branch sub-district, can adjudicate this sub-district through the A that pre-sets and/or B and whether can get into the interfered cell tabulation.
In the configuration scene of merit divided antenna, Q possibly be positioned at the overlapping region that a plurality of merit divided antennas cover under certain independent merit divided antenna (also claiming merit branch sub-district) overlay area or the logic district under the logic district.
When Q is positioned at the Non-overlapping Domain that the merit divided antenna covers (as shown in Figure 2), the transmitting power after then dividing according to merit is calculated this merit branch sub-district and is covered the RSRP that Q is ordered, and wherein, this merit branch sub-district covers the RSRP (representing with M) that Q orders and can be obtained by following formula:
Transmitting power-the 10log of M=logic district (N)+antenna gain-total losses;
Wherein, antenna gain comprises cell side antenna gain and receiving terminal antenna gain, and total losses comprise: feeder loss, propagated loss, building are worn damage, human body loss and atural object shadow fading etc.
When Q is positioned at the plural merit branch sub-district overlapping areas under the same logic district (as shown in Figure 3), then need covers the RSRP that Q orders and merge a plurality of merit branches sub-district under the logic district.
At last; Effective interfered cell tabulation of each pixel is traveled through; Interfered cell in the interfered cell tabulation transmitted cover the RSRP that Q orders and add up, obtain descending total interference of each pixel, finally can utilize descending total interference of each pixel and Traffic Channel received power to calculate descending SINR (Signal to Interference plus Noise Ratio; Signal to Interference plus Noise Ratio), be used to assess channel quality.
Method of the present invention can be applied to the network plan simulation stage; In descending interference is confirmed; Owing to the interfered cell tabulation meeting of each pixel in the current service cell because the configuration of the merit divided antenna of sub-district changes, therefore corresponding interference confirms that the result also can change.Traditional wireless system emulation then can't be simulated change situation before and after the interference of introducing behind the merit divided antenna, so the present invention can better promote network plan simulation precision, meanwhile reduces the work of the later stage network optimization.
Fig. 4 is the flow chart that method is confirmed in the descending interference of the embodiment of the invention, and as shown in Figure 4, this confirms that method comprises following step:
S10, to the selected pixel of main Serving cell, calculate each sub-district and transmit and cover the Reference Signal Received Power of this selected pixel, wherein, calculate respectively as independent sub-district each the OTSR antenna merit branch sub-district under the said OTSR base station;
S20, from said each sub-district, choose the interfered cell of said pixel;
S30, transmit according to the said interfered cell of choosing and to cover the RSRP of said pixel, confirm descending total interference of said pixel.
Among the step S10, from said sub-district, choose the interfered cell of said pixel, can choose, particularly, one of can comprise at least in the following rule, but be not limited to this through following pre-defined rule:
Rule 1, choose the selected pixel that covers main Serving cell of transmitting RSRP greater than the sub-district of predetermined threshold as interfered cell;
Rule 2, choose R the highest sub-district of the RSRP of the selected pixel that covers main Serving cell of transmitting as interfered cell, R is a preset value, R >=1.
Wherein, it is following to calculate the transmit mode of the Reference Signal Received Power M that covers the selected pixel of main Serving cell of a sub-district:
When said pixel is positioned at the central area of said main Serving cell, like the fringe region of this sub-district and the same frequency of fringe region of said main Serving cell, then M=P
1Like the fringe region of this sub-district and the fringe region alien frequencies of said main Serving cell, then M=P
1/ 2+P
2
When said pixel is positioned at the fringe region of said main Serving cell, like the fringe region of this sub-district and the same frequency of fringe region of said main Serving cell, then M=P
2Like the fringe region of this sub-district and the fringe region alien frequencies of said main Serving cell, then M=P
1/ 2,
Wherein, P
1For this sub-district transmitting on the frequency range of central area covered the Reference Signal Received Power of said pixel, P
2For transmitting on this sub-district edge region frequency range covered the Reference Signal Received Power of said pixel.
If said sub-district is OTSR antenna merit branch sub-district, then
P
1=said OTSR antenna merit is divided transmitting power-10log (N)+antenna gain-total losses of logic district on the frequency range of central area under the sub-district;
P
2=said OTSR antenna merit is divided transmitting power-10log (N)+antenna gain-total losses on the logic district edge region frequency range under the sub-district;
Wherein, N equals the number of the radio-frequency antenna of the affiliated logic district in said OTSR antenna merit branch sub-district.
Further, if comprise the OTSR antenna merit branch sub-district that belongs to same logic district more than two in the said interfered cell of choosing, confirm among the step S30 that the step of descending total interference of said pixel comprises:
Travel through said interfered cell one by one; The OTSR antenna merit branch sub-district that belongs to same logic district transmitted multiply by a commutation factor after the Reference Signal Received Power addition of covering said pixel; And then the Reference Signal Received Power addition that transmits and cover said pixel with other interfered cells; Obtain descending total interference of said pixel, wherein, 0＜said commutation factor＜1.
With a specific embodiment computational methods of the present invention are carried out detailed explanation below, comprise following step:
Step 101: each RF antenna is disposed separately, need the parameter of configuration to comprise: antenna type, transmitting power, deflection, angle of declination, antenna are hung height and propagation model.
Step 102: path loss calculation, the planning of PCI (Physical Cell Identifier) sign indicating number, adjacent cell planning and frequency planning are carried out in the sub-district of treating planning.
Suppose that a logic district A merit tells a plurality of antennas (A1/A2/...), its transmitting power sum is total transmitting power of this logic district A, the frequency resource and the PCI sign indicating number of sharing A simultaneously, but each merit divided antenna all has Neighboring Cell List separately.
Step 103: the descending interference for a pixel Q is confirmed to comprise the following steps:
(1), the interfered cell tabulation of a certain pixel Q of supposing the main Serving cell (BestServer A1) of certain antenna A1 is B, C, D, E, F1, F2 according to RSRP is descending;
(2), one by one travel through said interfered cell, can find out that from top interfered cell tabulation adjacent area F is merit branch sub-district, need sub-district F be regarded as two independent interfered cell F1, F2 when then calculating the Q interference and carry out sorting calculation.Because the transmitting power of F1, F2 reduces by half respectively, therefore corresponding RSRP value reduces, and F1, F2 become the weak jamming sub-district of Q.For example, suppose that the base station transmitting power originally of adjacent area F is 46dBm, it is 46dBm-10log2=43dBm that merit is divided the transmitting power of back F1, F2.If certainly strong jamming sub-district B or C are carried out the merit branch, the situation after the interfered cell list ordering of Q also can divide according to merit changes;
Can wait based on preset RSRP threshold value, interfered cell number and choose interfered cell, so part weak jamming sub-district can be excluded outside the interfered cell tabulation after being divided by merit.
(3), judge that Q is positioned at IC (Inter Cell, central area) or the EC (Edge Cell, fringe region) of BestServer_A1, calculate the interference that Q receives according to residing cell conditions, the used frequency range of the interference that Q receives and the IC of coverage cell and EC is relevant.
The method of salary distribution with ICIC SFR (Soft Frequency Reuse, soft-frequency reuse) is given an example, and the frequency range of supposing cell allocation is 2610MHz～2620MHz, and then the mode according to SFR is divided into three with frequency range, the method for salary distribution such as table 1:
Table 1
| Mode | F1：2610～2613.3 | F2：2613.3～2616.6 | F3：2616.6～2620 |
| One | EC | IC | IC |
| Two | IC | EC | IC |
| Three | IC | IC | EC |
A, when Q is positioned at the IC of BestServer_A1; Suppose that BestServer_A1 adopts mode one; And interfered cell also adopts mode one; The EC of the EC of interfered cell and BestServer_A1 is with frequently at this moment, and then interfered cell is the interference that transmits and produce on the IC frequency range of interfered cell to the interference of Q;
If interfered cell adopts mode two or mode three; Then this moment interfered cell EC and the EC of BestServer_A1 be alien frequencies, interfered cell is exactly the interference sum of generation of transmitting on the EC frequency range of 1/2 and interfered cell of the interference that produces that transmits on the IC frequency range of interfered cell to the interference of Q so.
Therefore, when Q is positioned at the IC of BestServer_A1,
The calculating interfered cell transmits on the IC frequency range and covers the RSRP of Q, representes with P1, and the EC of this interfered cell and the EC of BestServer_A1 are with frequently;
The calculating interfered cell transmits on the EC frequency range and covers the RSRP of Q, representes the EC alien frequencies of the EC of this interfered cell and BestServer_A1 with P2;
The calculating interfered cell transmits on the IC frequency range and covers the RSRP of Q, representes the EC alien frequencies of the EC of this interfered cell and BestServer_A1 with P3;
The interference IC=P1+P2+P3*1/2 that receives of Q then.
B, when Q is positioned at the EC of BestServer_A1; The frequency resource that takies is 1/3 of a whole frequency band; Suppose that BestServer_A1 adopts mode one, and interfered cell also adopts mode one, then the interference that receives of Q is the interference that transmits and produce on the EC frequency range of interfered cell;
When interfered cell adopted mode two or mode three, then the interference that receives of Q was 1/2 of the interference that produces that transmits on the IC frequency range of interfered cell.
Therefore, when Q is positioned at the EC of BestServer_A1,
The calculating interfered cell transmits on the EC frequency range and covers the RSRP of Q, representes with P4, and the EC of this interfered cell and the EC of BestServer_A1 are with frequently;
The calculating interfered cell transmits on the IC frequency range and covers the RSRP of Q, representes the EC alien frequencies of the EC of this interfered cell and BestServer_A1 with P5;
The interference EC=P4+P5*1/2 that receives of Q then.
When calculating the interference of each pixel; Can cover the RSRP of Q with a plurality of merit divided antennas that M1/M2/M3... comes to represent respectively to belong to same logic district, need judge that next the Q present position is whether in the overlapping region of the merit divided antenna of same logic district, if in the overlapping region; Then need the RSRP that a plurality of merit divided antennas cover Q be merged into C* (M1+M2+...); Wherein C representes that Q drops on the commutation factor on certain clutter (type of ground objects), and value is between (0,1); If not in the overlapping region, then do not need to merge.The effective interference that to cover each pixel according to a last step adds up, thereby obtains descending total interference of each pixel.
The present invention also provides a kind of device of confirming descending interference, and as shown in Figure 5, the device of present embodiment is applied to comprise the system of theaomni-directional transmission directional reception (OTSR) base station, comprising: computing module, choose module and determination module, wherein,
Computing module is used for the selected pixel to main Serving cell, calculates each sub-district and transmits and cover the Reference Signal Received Power of this selected pixel, and wherein, calculate respectively as independent sub-district each the OTSR antenna merit branch sub-district under the said OTSR base station;
Choose module, be used for choosing the interfered cell of said pixel from said each sub-district;
Determination module is used for choosing interfered cell that module chooses and transmitting and cover the RSRP of said pixel according to said, confirms descending total interference of said pixel.
Preferably, to calculate the transmit mode of the Reference Signal Received Power M that covers the selected pixel of main Serving cell of a sub-district following for said computing module:
When said pixel is positioned at the central area of said main Serving cell, like the fringe region of this sub-district and the same frequency of fringe region of said main Serving cell, then M=P
1Like the fringe region of this sub-district and the fringe region alien frequencies of said main Serving cell, then M=P
1/ 2+P
2
When said pixel is positioned at the fringe region of said main Serving cell, like the fringe region of this sub-district and the same frequency of fringe region of said main Serving cell, then M=P
2Like the fringe region of this sub-district and the fringe region alien frequencies of said main Serving cell, then M=P
1/ 2,
Wherein, P
1For this sub-district transmitting on the frequency range of central area covered the Reference Signal Received Power of said pixel, P
2For transmitting on this sub-district edge region frequency range covered the Reference Signal Received Power of said pixel.
Wherein, if said sub-district is OTSR antenna merit branch sub-district, then
P
1=said OTSR antenna merit is divided transmitting power-10log (N)+antenna gain-total losses of logic district on the frequency range of central area under the sub-district;
P
2=said OTSR antenna merit is divided transmitting power-10log (N)+antenna gain-total losses on the logic district edge region frequency range under the sub-district;
Wherein, N equals the number of the radio-frequency antenna of the affiliated logic district in said OTSR antenna merit branch sub-district.
In a preferred embodiment, the said module of choosing comprises one of lower unit at least:
First chooses the unit, is used to choose transmit the Reference Signal Received Power that covers said pixel greater than the sub-district of the predetermined threshold interfered cell as said pixel; Perhaps
Second chooses the unit, is used to choose transmit the highest R the sub-district of the Reference Signal Received Power that covers said pixel as the interfered cell of said pixel, and R is a preset value, R >=1.
In a preferred embodiment, if comprise the OTSR antenna merit branch sub-district that belongs to same logic district more than two in the said interfered cell of choosing, then said determination module confirms that descending total interference of said pixel is specially:
Travel through said interfered cell one by one; The OTSR antenna merit branch sub-district that belongs to same logic district transmitted multiply by a commutation factor after the Reference Signal Received Power addition of covering said pixel; And then the Reference Signal Received Power addition that transmits and cover said pixel with other interfered cells; Obtain descending total interference of said pixel, wherein, 0＜said commutation factor＜1.
To sum up, in the descending interference modeling of LTE, increase the sub-district based on the configuration of OTSR site type, can better reflect the real network performance of LTE, computational methods provided by the invention and device can improve the cost of network plan simulation precision and the optimization of minimizing later stage.
One of ordinary skill in the art will appreciate that all or part of step in the said method can instruct related hardware to accomplish through program, said program can be stored in the computer-readable recording medium, like read-only memory, disk or CD etc.Alternatively, all or part of step of the foregoing description also can use one or more integrated circuits to realize.Correspondingly, each the module/unit in the foregoing description can adopt the form of hardware to realize, also can adopt the form of software function module to realize.The present invention is not restricted to the combination of the hardware and software of any particular form.
More than be merely the preferred embodiments of the present invention; Certainly; The present invention also can have other various embodiments; Under the situation that does not deviate from spirit of the present invention and essence thereof, those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (10)
1. method is confirmed in a descending interference, is applied to comprise the system of theaomni-directional transmission directional reception (OTSR) base station, and this method comprises:
To the selected pixel of main Serving cell, calculate each sub-district and transmit and cover the Reference Signal Received Power of this selected pixel, wherein, calculate respectively as independent sub-district each the OTSR antenna merit branch sub-district under the said OTSR base station;
From said each sub-district, choose the interfered cell of said pixel;
Transmit according to the said interfered cell of choosing and to cover the Reference Signal Received Power of said pixel, confirm descending total interference of said pixel.
2. the method for claim 1, it is characterized in that: the step of from said sub-district, choosing the interfered cell of said pixel comprises:
The Reference Signal Received Power that choosing transmits covers said pixel is greater than the sub-district of the predetermined threshold interfered cell as said pixel; Perhaps
Choosing transmits covers the interfered cell of R the highest sub-district of the Reference Signal Received Power of said pixel as said pixel, and R is a preset value, R >=1.
3. the method for claim 1 is characterized in that: it is following to calculate the transmit mode of the Reference Signal Received Power M that covers the selected pixel of main Serving cell of a sub-district:
When said pixel is positioned at the central area of said main Serving cell, like the fringe region of this sub-district and the same frequency of fringe region of said main Serving cell, then M=P
1Like the fringe region of this sub-district and the fringe region alien frequencies of said main Serving cell, then M=P
1/ 2+P
2
When said pixel is positioned at the fringe region of said main Serving cell, like the fringe region of this sub-district and the same frequency of fringe region of said main Serving cell, then M=P
2Like the fringe region of this sub-district and the fringe region alien frequencies of said main Serving cell, then M=P
1/ 2,
Wherein, P
1For this sub-district transmitting on the frequency range of central area covered the Reference Signal Received Power of said pixel, P
2For transmitting on this sub-district edge region frequency range covered the Reference Signal Received Power of said pixel.
4. method as claimed in claim 3 is characterized in that: if said sub-district is OTSR antenna merit branch sub-district, then
P
1=said OTSR antenna merit is divided transmitting power-10log (N)+antenna gain-total losses of logic district on the frequency range of central area under the sub-district;
P
2=said OTSR antenna merit is divided transmitting power-10log (N)+antenna gain-total losses on the logic district edge region frequency range under the sub-district;
Wherein, N equals the number of the radio-frequency antenna of the affiliated logic district in said OTSR antenna merit branch sub-district.
5. like claim 3 or 4 described methods; It is characterized in that: if comprise the OTSR antenna merit branch sub-district that belongs to same logic district more than two in the said interfered cell of choosing; Said transmitting according to the said interfered cell of choosing covered the Reference Signal Received Power of said pixel, confirms that the step of descending total interference of said pixel comprises:
Travel through said interfered cell one by one; The OTSR antenna merit branch sub-district that belongs to same logic district transmitted multiply by a commutation factor after the Reference Signal Received Power addition of covering said pixel; And then the Reference Signal Received Power addition that transmits and cover said pixel with other interfered cells; Obtain descending total interference of said pixel, wherein, 0＜said commutation factor＜1.
6. device of confirming descending interference is applied to comprise comprise the system of theaomni-directional transmission directional reception (OTSR) base station:
Computing module is used for the selected pixel to main Serving cell, calculates each sub-district and transmits and cover the Reference Signal Received Power of this selected pixel, and wherein, calculate respectively as independent sub-district each the OTSR antenna merit branch sub-district under the said OTSR base station;
Choose module, be used for choosing the interfered cell of said pixel from said each sub-district;
Determination module is used for choosing interfered cell that module chooses and transmitting and cover the Reference Signal Received Power of said pixel according to said, confirms descending total interference of said pixel.
7. device as claimed in claim 6 is characterized in that: the said module of choosing comprises one of lower unit at least:
First chooses the unit, is used to choose transmit the Reference Signal Received Power that covers said pixel greater than the sub-district of the predetermined threshold interfered cell as said pixel; Perhaps
Second chooses the unit, is used to choose transmit the highest R the sub-district of the Reference Signal Received Power that covers said pixel as the interfered cell of said pixel, and R is a preset value, R >=1.
8. device as claimed in claim 6 is characterized in that: it is following that said computing module calculates the transmit mode of the Reference Signal Received Power M that covers the selected pixel of main Serving cell of a sub-district:
When said pixel is positioned at the central area of said main Serving cell, like the fringe region of this sub-district and the same frequency of fringe region of said main Serving cell, then M=P
1Like the fringe region of this sub-district and the fringe region alien frequencies of said main Serving cell, then M=P
1/ 2+P
2
When said pixel is positioned at the fringe region of said main Serving cell, like the fringe region of this sub-district and the same frequency of fringe region of said main Serving cell, then M=P
2Like the fringe region of this sub-district and the fringe region alien frequencies of said main Serving cell, then M=P
1/ 2,
Wherein, P
1For this sub-district transmitting on the frequency range of central area covered the Reference Signal Received Power of said pixel, P
2For transmitting on this sub-district edge region frequency range covered the Reference Signal Received Power of said pixel.
9. device as claimed in claim 8 is characterized in that: if said sub-district is OTSR antenna merit branch sub-district, then
P
1=said OTSR antenna merit is divided transmitting power-10log (N)+antenna gain-total losses of logic district on the frequency range of central area under the sub-district;
P
2=said OTSR antenna merit is divided transmitting power-10log (N)+antenna gain-total losses on the logic district edge region frequency range under the sub-district;
Wherein, N equals the number of the radio-frequency antenna of the affiliated logic district in said OTSR antenna merit branch sub-district.
10. like claim 8 or 9 described devices; It is characterized in that: if comprise the OTSR antenna merit branch sub-district that belongs to same logic district more than two in the said interfered cell of choosing, then said determination module confirms that descending total interference of said pixel is specially:
Travel through said interfered cell one by one; The OTSR antenna merit branch sub-district that belongs to same logic district transmitted multiply by a commutation factor after the Reference Signal Received Power addition of covering said pixel; And then the Reference Signal Received Power addition that transmits and cover said pixel with other interfered cells; Obtain descending total interference of said pixel, wherein, 0＜said commutation factor＜1.
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