CN103327505A - Method and device for determining physical cellular identification - Google Patents

Abstract

The invention discloses a method and device for determining a physical cellular identification. According to the method, total bidirectional telephone traffic of a cell, load reference signal receiving power (RSRP) of the cell in a measurement report and load RSRP, which is received by the cell, of adjacent cells are loaded to no-load RSRP of the cell and no-load RSRP, which is received by the cell, of all the adjacent cells in a weighting mode to obtain the RSRP of the cell and all interference RSRP of the cell, wherein the RSRP of the cell and the interference RSRP of the cell are weighted and reflect the actual load and network operation conditions of the cell. PCI selection is conducted under the situation that the RSRP of the cell and the interference RSRP of the cell meet predetermined adjustment conditions according to judgment after the RSRP of the cell and the interference RSRP of the cell are weighted. By means of the method and device for determining the physical cellular identification, the network no-load conditions, the actual traffic load conditions of the cell and the actual network operation conditions can be combined for PCI planning and selection, and the problem that the PCI selection is unreasonable due to the fact that PCI planning is conducted according to uncertain data in the prior art can be solved.

Description

Definite method and the device of Physical Cell Identifier

Technical field

The present invention relates to mobile communication system, especially relate to a kind of definite method and device of Physical Cell Identifier.

Background technology

(Physical Cell Identifier is that (Long Term Evolution, LTE) the important sign of residential quarter in wireless network in the system also is the terminal distinguishing cell to Long Term Evolution and measure the unique identification that reports PCI) to Physical Cell Identifier.PCI planning is very important link in the planning of LTE system wireless network and the construction of LTE system wireless network.Reasonably distribute and use the PCI of LTE system, can carry and reduce resource utilization, the raising network total quality that disturbs, improves system.At present, the PCI quantity in the LTE system has only 504, and only is divided into 168 groups, in the situation of large-scale network-estabilishing, if do not carry out multiplexing then be difficult to satisfy the demand of real network.Under the situation of large-scale network-estabilishing, particularly under the situation of identical networking, spendable PCI is just more rare.For this self-interference of LTE system, except the absolute incoming level of needs good wireless channel, also need to have higher signal and interference and noise ratio (Signal to Interference Ilus Noise Ratio, SINR).If PCI planning is unreasonable, (Reference Signal RS) produces the position collision, cause wireless channel reference signal incoming level very high, but SINR is very low, and then causes covering the cavity can to make reference signal.

In existing technical scheme, the general employing planned according to the measurement report of LTE terminal to report.The obvious deficiency of this method is, in the LTE system, the measurement report that the agreement prescribed terminal reports not is periodic, but rely on event driven, under situations such as handoff failure.This measurement report that produces under given conditions just causes can't obtaining the disturbed condition of whole network at all.Will make result and the actual conditions of PCI planning cause very big discrepancy like this.For the LTE system, if PCI planning is bad, will have a strong impact on network planning quality, be that the optimization of later stage network increases difficulty simultaneously.

For instance, in the LTE system, PCI is the unique identification of distinguishing cell, and simultaneously the LTE system uses PCI the signal of a plurality of channels is carried out scrambling, as PBCH, PDCCH, PCFICH etc.This shows the planning quality of PCI, will directly influence the network quality of LTE system.According to the regulation of 3GPP agreement, baseband signal be mapped to Resource Unit (Resource Element, RE),

K=6m+ (v+v wherein _Shift) mod 6.By following formula as can be seen, in the resource mapping process, the location parameter k of resource depends on v and v _ShiftWherein

$v=\left\{\begin{array}{cc}0& \mathrm{if\; p}=0\mathrm{andl}=0\\ 3& \mathrm{if\; p}=0\mathrm{andl}\≠0\\ 3& \mathrm{if\; p}=1\mathrm{andl}=0\\ 0& \mathrm{if\; p}=1\mathrm{andl}\≠0\\ 3\left(n_s\mathrm{mod}2\right)& \mathrm{if\; p}=2\\ 3+3\left(n_s\mathrm{mod}2\right)& \mathrm{f\; p}=3\end{array}\right.,$ Know $v_{\mathrm{shift}}=N_{\mathrm{ID}}^{\mathrm{cell}}\mathrm{mod}6,$

Wherein, k is the frequency domain call number of RE, and v is the quantity of transport layer, and p is the antenna port number, and l is the time domain call number of RE, n _sBe the timeslot number in the radio frames, v _ShiftBe the side-play amount of the transmission number of plies,

Physical-layer cell ID for the residential quarter.If according to above-mentioned formula just can extrapolate like this PCI with 3 and 6 ask under the situation that comes to the same thing of mould, the position of resource mapping will be consistent, causes signal to bump, thereby produce co-channel interference.

In addition, the disturbed condition of the minizone of institute's foundation is that measurement report by terminal to report obtains in the PCI planning process.But the measurement report of terminal to report can't reflect the actual loading situation of the network that gives the correct time, and namely terminal can't learn that when reporting measurement reports this moment, network was unloaded situation or fully loaded situation or other loading condition.Like this, the measurement report of terminal to report is some discrete fully numerical value, and some interference value that measures is zero, according to the foundation of more so discontinuous measurement reports as PCI planning, can't draw rational and effective PCI program results, thereby conversation situation, the network operation of terminal exerted an influence.

As seen, exist in the prior art at present and carry out PCI planning according to inapt data and cause PCI to select irrational problem.

Summary of the invention

The embodiment of the invention provides a kind of Physical Cell Identifier to determine method, carries out PCI planning according to uncertain data and causes PCI to select irrational problem in order to solve in the prior art.

Accordingly, the embodiment of the invention also provides a kind of Physical Cell Identifier to determine device.

Embodiment of the invention technical scheme is as follows:

A kind of Physical Cell Identifier PCI determines method, comprising: for current area, obtain the unloaded RSRP that unloaded Reference Signal Received Power RSRP under Light Condition, this residential quarter and this residential quarter based on current PC I receive each neighbor cell; Obtain the two-way total traffic of this residential quarter, obtain the load RSRP of this residential quarter under load condition in the measurement report and the load RSRP that this residential quarter receives each neighbor cell; Receive the load RSRP of each neighbor cell, the unloaded RSRP that the unloaded RSRP in this residential quarter that obtains and this residential quarter are received each neighbor cell according to this two-way total traffic that obtains and this cell load RSRP in the measurement report and this residential quarter and be weighted processing respectively, what obtain the RSRP of this residential quarter after the weighting and this residential quarter after the weighting respectively disturbs RSRP; The RSRP that respectively disturbs of the RSRP of this residential quarter after the judgement weighting and this residential quarter after the weighting satisfies under the situation of predetermined regularization condition the side-play amount V of the transmission number of plies between selection and this residential quarter current PC I _ShiftThe PCI of difference maximum is as the PCI of the neighbor cell of this residential quarter.

A kind of Physical Cell Identifier PCI determines device, comprise: first acquisition module, be used for for current area, obtain the unloaded RSRP that unloaded Reference Signal Received Power RSRP under Light Condition, this residential quarter and this residential quarter based on current PC I receive each neighbor cell; Second acquisition module is used for obtaining the two-way total traffic of this residential quarter, obtains the load RSRP of this residential quarter under load condition in the measurement report and the load RSRP that this residential quarter receives each neighbor cell; The weighting processing module, for the two-way total traffic and this cell load RSRP of measurement report and the load RSRP that this residential quarter receives each neighbor cell that obtain according to second acquisition module, the unloaded RSRP that the unloaded RSRP in this residential quarter that first acquisition module is obtained and this residential quarter receive each neighbor cell is weighted processing respectively, and what obtain the RSRP of this residential quarter after the weighting and this residential quarter after the weighting respectively disturbs RSRP; Judge module is used for judging that the RSRP of this residential quarter after the weighting that obtains is handled in the weighting of weighting processing module and whether the RSRP that respectively disturbs of this residential quarter after the weighting satisfies the regularization condition of being scheduled to; The selection module is used for the RSRP of this residential quarter after judge module is judged weighting and the RSRP that respectively disturbs of this residential quarter after the weighting and satisfies under the situation of predetermined regularization condition the side-play amount V of the transmission number of plies between selection and this residential quarter current PC I _ShiftThe PCI of difference maximum is as the PCI of the neighbor cell of this residential quarter.

The technical scheme that provides according to the embodiment of the invention, by the two-way total traffic of residential quarter and the load RSRP of this residential quarter in the measurement report are received the load RSRP of neighbor cell by the mode of weighting processing with this residential quarter, be loaded into the unloaded RSRP of residential quarter, and this residential quarter receives on the unloaded RSRP of each neighbor cell, obtain reflecting residential quarter actual loading and network operation situation, the RSRP of this residential quarter after the weighting and this residential quarter respectively disturb RSRP, the RSRP of this residential quarter after the judgement weighting and the interference RSRP of this residential quarter satisfy the selection of carrying out PCI under the situation of being scheduled to regularization condition, can be with the unloaded situation of network, the actual traffic load situation in residential quarter, the network practical operation situation combines planning and the selection of carrying out PCI, carries out PCI planning according to inapt data and causes PCI to select irrational problem thereby can solve in the prior art.

Description of drawings

Fig. 1 is for determining the workflow diagram of method according to the PCI of the embodiment of the invention;

Fig. 2 is for determining the structural framing figure of device according to the PCI of the embodiment of the invention.

Embodiment

The embodiment of the invention is planned irrational problem at the PCI that exists in the prior art, has proposed definite scheme of a kind of PCI, in order to address this problem.

In definite scheme of the PCI that the embodiment of the invention provides, obtain the unloaded RSRP (being each unloaded RSRP of interference of residential quarter) of other residential quarter that unloaded RSRP under Light Condition, the residential quarter and this residential quarter based on current PC I receive respectively, and the two-way total traffic and the load RSRP of this residential quarter under load condition in the measurement report and the load RSRP that this residential quarter receives each neighbor cell that obtain this residential quarter, (being that RSRP is disturbed in each load of residential quarter); And disturb RSRP according to the two-way total traffic of this residential quarter that obtains and cell load RSRP and each load of residential quarter, the unloaded RSRP in this residential quarter and each unloaded RSRP that disturbs of this residential quarter are weighted processing, and judge the RSRP be weighted this residential quarter after the processing and this residential quarter respectively disturb RSRP under the situation that satisfies predetermined regularization condition, the V between selection and this residential quarter current PC I _ShiftThe PCI of difference maximum is as the PCI of the neighbor cell of this residential quarter, the unloaded situation of network, the actual traffic load situation in residential quarter, network practical operation situation can be combined and carry out determining and selection of PCI, as seen the embodiment of the invention is carried out determining of PCI and is selected according to comparatively comprehensive data, can overcome to carry out PCI planning according to inapt data in the prior art and cause PCI to select irrational problem.

Below the embodiment of the invention is elaborated.

Fig. 1 shows the workflow diagram of the method for determining according to the PCI of the embodiment of the invention, and as shown in Figure 1, this method comprises following processing procedure.

Step 11, for current area, obtain the unloaded RSRP that unloaded Reference Signal Received Power RSRP under Light Condition, this residential quarter and this residential quarter based on current PC I receive each neighbor cell;

Step 12, obtain the two-way total traffic of this residential quarter, obtain the load RSRP of this residential quarter under load condition in the measurement report and the load RSRP that this residential quarter receives each neighbor cell;

Step 13, receive the load RSRP of each neighbor cell, the unloaded RSRP that the unloaded RSRP in this residential quarter that obtains and this residential quarter are received each neighbor cell according to this two-way total traffic that obtains and this cell load RSRP in the measurement report and this residential quarter and be weighted processing respectively, what obtain the RSRP of this residential quarter after the weighting and this residential quarter after the weighting respectively disturbs RSRP;

The RSRP that respectively disturbs of the RSRP of this residential quarter after step 14, the judgement weighting and this residential quarter after the weighting satisfies under the situation of predetermined regularization condition the side-play amount V of the transmission number of plies between selection and this residential quarter current PC I _ShiftThe PCI of difference maximum is as the PCI of the neighbor cell of this residential quarter.

According to method as shown in Figure 1, disturb RSRP by the mode of weighting processing by two-way total traffic and the cell load RSRP in the measurement report with the residential quarter with each load, be loaded into that the unloaded RSRP in residential quarter goes up and each unloaded interference RSRP on, obtain reflecting that the RSRP of the residential quarter after the weighting of residential quarter actual loading and network operation situation and each disturb RSRP, the RSRP of the residential quarter after the judgement weighting and each disturb RSRP to satisfy the selection of carrying out PCI under the situation of being scheduled to regularization condition, can be with the unloaded situation of network, the actual traffic load situation in residential quarter, the network practical operation situation combines carries out determining and selecting of PCI, carries out PCI planning according to inapt data in the prior art and causes PCI to select irrational problem thereby can solve.

A kind of preferred mode, the preferred implementation of method shown in Figure 1 comprises following processing procedure.

Step 1, selected zone to be planned comprise n residential quarter in this zone, this zone can be polygonal region, and n is natural number;

Step 2, the mode by the whole network frequency sweep, obtain under the network no-load condition, based on unloaded RSRP and the unloaded RSRP of interference of each residential quarter of current PC I, this RSRP can be with frequency RSRP or alien frequencies RSRP, the RSRP that obtains can be as shown in table 1, in table 1, It (i) is the unloaded RSRP of the same frequency of cell i, Il (i) is the unloaded RSRP of the alien frequencies of cell i, It (i, j) the unloaded RSRP that disturbs of the same frequency of the residential quarter j that receives for cell i, Il (i, j) the unloaded RSRP that disturbs of the alien frequencies of the residential quarter j that receives for cell i;

Table 1

Step 3, obtain the two-way total traffic of each residential quarter and the RSRP in the measurement report, wherein, the two-way total traffic of residential quarter can be to obtain the instantaneous two-way total traffic of residential quarter constantly, also can be the mean value of the two-way total traffic of this residential quarter of in a period of time, obtaining, RSRP in the measurement report is the RSRP of terminal that terminal reports to the eNodeB residential quarter that can measure, the RSRP that comprises this residential quarter, and this residential quarter receives the RSRP of each neighbor cell, be cell load RSRP, and RSRP is disturbed in each load of residential quarter, cell load RSRP can be expressed as C (i), each load of residential quarter disturbs RSRP can be expressed as C (i, j), because RSRP comprises with frequency RSRP and alien frequencies RSRP, cell load RSRP comprises that the residential quarter is that Ct (i) and residential quarter alien frequencies load RSRP are Cl (i) with the RSRP of load frequently, each load of residential quarter disturbs RSRP to comprise the residential quarter, and each is Ct (i with the interference of load frequently RSRP, j) and each alien frequencies load of residential quarter disturb RSRP be Cl (i, j);

Step 4, according to the two-way total traffic of each residential quarter of obtaining and the RSRP in the measurement report, under the unloaded situation in each residential quarter, be weighted processing based on the RSRP (as shown in table 1) of current PC I;

Particularly, can according to weighting formula I ' (i)=A*I (i)+B*C (i) obtains the RSRP of this residential quarter after the weighting, wherein, I (i) is the unloaded RSRP of current area i, and I ' (i) is the RSPR of the current area i after the weighting, and A is and the positively related telephone traffic coefficient of the two-way total traffic of current area, B is for embodying the network coefficient of network the present situation, A is the real number between 0 to 1, telephone traffic coefficient A and network coefficient B and be that 1, C (i) is the load RSRP of the current area i in the measurement report; Because RSRP comprises with frequency RSRP and alien frequencies RSRP, this weighting formula can comprise: It ' (i)=A*It (i)+B*Ct (i) and Il ' (i)=A*Il (i)+B*Cl (i), It (i) is the unloaded RSRP of the same frequency of current area i, It ' is the same frequency RSRP of the current area i after the weighting (i), Il (i) is the unloaded RSRP of the alien frequencies of current area i, Il ' is the alien frequencies RSRP of the current area i after the weighting (i), Ct (i) is the same frequency load RSRP of the current area i in the measurement report, and Cl (i) is the alien frequencies load RSRP of the current area i in the measurement report;

According to weighting formula I ' (i, j)=A*I (i, j)+B*C (i, j) RSRP that obtains other residential quarter that this residential quarter after the weighting receives is the interference RSRP of this residential quarter after the weighting, wherein, I (i, j) RSRP is disturbed in the zero load of the neighbor cell j that receives for current area i, I ' (i, j) the interference RSRP of the neighbor cell j that receives for the current area i after the weighting, A is and the positively related telephone traffic coefficient of the two-way total traffic of current area, B is for embodying the network coefficient of network the present situation, and A is the real number between 0 to 1, telephone traffic coefficient A and network coefficient B and be 1, C (i, j) RSRP is disturbed in the load of the neighbor cell j that receives for the current area i in the measurement report; Because RSRP comprises with frequency RSRP and alien frequencies RSRP, this weighting formula can comprise: It ' (i, j)=A*It (i, j)+B*Ct (i, j) and Il ' (i, j)=and A*Il (i, j)+B*Cl (i, j), It (i, j) the unloaded RSRP that disturbs of the same frequency of the neighbor cell j that receives for current area i, It ' (i, j) the co-channel interference RSRP of the neighbor cell j that receives for the current area i after the weighting, Il (i, j) be the unloaded RSRP of interference of alien frequencies of the neighbor cell j that receives at current area i, Il ' (i, j) the alien frequencies interference RSPR after the weighting of the neighbor cell j that receives for current area i, Ct (i, j) RSRP is disturbed in the same frequency load of the neighbor cell j that receives for the current area i in the measurement report, and Cl (i, j) RSRP is disturbed in the alien frequencies load of the neighbor cell j that receives for the current area i in the measurement report;

Can be as shown in table 2 according to each RSRP after the weighting of above-mentioned weighting formula;

Table 2

A kind of preferred mode, telephone traffic coefficient A is the predetermined numerical value corresponding with the corresponding numerical value section of two-way total traffic numerical value of the residential quarter that obtains, perhaps, A is the percentage form numerical value of the two-way total traffic numerical value of the residential quarter that obtains;

Step 5, for each residential quarter of PCI to be determined, judge respectively predetermined regularization condition I ' (i)-I ' (i, j)＞whether α set up, and judging under the situation that this formula is set up, and handles proceeding to step 6, otherwise, handle proceeding to step 7; For regularization condition I ' (i)-I ' (i, j)＞α, particularly, can distinguish with frequently RSRP or alien frequencies RSRP judge respectively It ' (i)-It ' (i, j)＞α or Il ' (i)-Il ' (i, j)＞α, α is predetermined threshold value, can be according to different channels or network condition in the concrete process of implementing, the value of α is set, for example, can set α=3db;

Step 6, judge I ' (i)-I ' (i, j)＞situation that α sets up under, j reselects PCI for the residential quarter, specifically can select and PCI that cell i is current between V _ShiftThe PCI of difference maximum handles and returns step 2 as the PCI of residential quarter j, namely above-mentioned steps two to step 6 is carried out iterative processing;

A kind of preferred mode, in the concrete process of implementing, can also judge whether the number of times that above-mentioned iterative processing is carried out in each residential quarter of PCI to be allocated reaches predetermined times, when reaching predetermined times, processing proceeds to step 7, can alleviate the computing complexity that PCI determines like this;

A kind of preferred mode, in the concrete process of implementing, can reserve for spendable PCI, can the quantity of the PCI that participate in the distribution be controlled like this, thereby between computational complexity that PCI determines and definite result's accuracy, reach relative equilibrium;

Step 7, the PCI of each residential quarter is determined to finish dealing with.

According to above-mentioned steps, the two-way total traffic of residential quarter and the cell load RSRP in the measurement report and cell load are disturbed mode that RSRP handles by weighting, are loaded into the unloaded RSRP in residential quarter and the unloaded RSRP of interference in residential quarter goes up, obtains reflecting RSRP and the area interference RSRP of the residential quarter after the weighting of residential quarter actual loading and network operation situation, judge under the RSRP and the situation of difference greater than predetermined threshold value between the area interference RSRP of the residential quarter after the weighting, will and the current PCI in residential quarter between V _ShiftThe PCI of difference maximum is as the PCI of the neighbor cell of this residential quarter, the unloaded situation of network, the actual traffic load situation in residential quarter, network practical operation situation can be combined and carry out determining and selecting of PCI, carry out PCI according to inapt data and plan and cause PCI to select irrational problem thereby can solve in the prior art.

Compare with prior art in the sporadic data that only reports according to measurement report carry out PCI and determine, adopt residential quarter unloaded RSRP, load RSRP and cell telephone traffic amount data to carry out integrated treatment in the embodiment of the invention, these data more can reflect network actual operating state and disturbed condition, can determine to provide more continuously, effectively determine foundation for PCI.

Be to realize above-mentioned functions, the embodiment of the present application PCI here determines that method can realize by hardware, also can realize by following software program, namely determines that by following PCI device realizes determining of PCI.

Fig. 2 shows the structural framing figure that determines device according to the PCI of the embodiment of the invention, and as shown in Figure 2, this device comprises: first acquisition module 1, second acquisition module 2, weighting processing module 3, judge module 4, selection module 5.

First acquisition module 1 is used for for current area, obtains the unloaded RSRP that unloaded Reference Signal Received Power RSRP under Light Condition, this residential quarter and this residential quarter based on current PC I receive each neighbor cell;

Second acquisition module 2 is used for obtaining the two-way total traffic of this residential quarter, obtains the load RSRP of this residential quarter under load condition in the measurement report and the load RSRP that this residential quarter receives each neighbor cell; A kind of preferred mode, second acquisition module 2 are obtained at the instantaneous two-way total traffic that obtains this residential quarter constantly or are obtained the mean value of the two-way total traffic of this residential quarter in a period of time;

Weighting processing module 3, be connected to first acquisition module 1, second acquisition module 2, for the two-way total traffic and this cell load RSRP of measurement report and the load RSRP that this residential quarter receives each neighbor cell that obtain according to second acquisition module 2, the unloaded RSRP that the unloaded RSRP in this residential quarter that first acquisition module 1 is obtained and this residential quarter receive each neighbor cell is weighted processing respectively, and what obtain the RSRP of this residential quarter after the weighting and this residential quarter after the weighting respectively disturbs RSRP;

A kind of preferred mode, weighting processing module 3, according to weighting formula I ' (i)=A*I (i)+B*C (i) obtains the RSRP of this residential quarter after the weighting, wherein, I (i) is the unloaded RSRP of current area i, I ' (i) is the RSPR of the current area i after the weighting; According to weighting formula I ' (i, j)=A*I (i, j)+B*C (i, j) obtain after the weighting this residential quarter respectively disturb RSRP, wherein, and I (i, j) RSRP is disturbed in the zero load of the neighbor cell j that receives for current area i, (i j) receives the interference RSRP of neighbor cell j to I ' for the current area i after the weighting; Wherein, A is and the positively related telephone traffic coefficient of the two-way total traffic of described residential quarter, C (i) is the load RSRP of the current area i in the described measurement report, C (i, j) RSRP is disturbed in the load of the neighbor cell j that receives for the current area i in the described measurement report, B is for embodying the network coefficient of network the present situation, and A is the real number between 0 to 1, described telephone traffic coefficient A and described network coefficient B and be 1;

Judge module 4 is connected to weighting processing module 3, is used for judging that the RSRP of this residential quarter after the weighting that obtains is handled in 3 weightings of weighting processing module and whether the RSRP that respectively disturbs of this residential quarter after the weighting satisfies the regularization condition of being scheduled to;

A kind of preferred mode, judge module 4 is concrete to be used for judging that whether the difference of interference RSRP of the RSRP of this residential quarter after the weighting and this residential quarter after the weighting is greater than predetermined threshold;

Select module 5, be connected to judge module 4, be used for the RSRP of this residential quarter after judge module 4 is judged weighting and the RSRP that respectively disturbs of this residential quarter after the weighting and satisfy under the situation of predetermined regularization condition the side-play amount V of the transmission number of plies between selection and this residential quarter current PC I _ShiftThe PCI of difference maximum is as the PCI of the neighbor cell of this residential quarter.

According to device as shown in Figure 2, by above-mentioned module, disturb RSRP by the mode of weighting processing with each load two-way total traffic and the cell load RSRP in the measurement report of residential quarter, be loaded into that the unloaded RSRP in residential quarter goes up and each unloaded interference RSRP on, obtain reflecting that the RSRP of the residential quarter after the weighting of residential quarter actual loading and network operation situation and each disturb RSRP, the RSRP of the residential quarter after the judgement weighting and each disturb RSRP to satisfy the selection of carrying out PCI under the situation of being scheduled to regularization condition, can be with the unloaded situation of network, the actual traffic load situation in residential quarter, the network practical operation situation combines carries out determining and selecting of PCI, carries out PCI planning according to inapt data in the prior art and causes PCI to select irrational problem thereby can solve.

In sum, the embodiment of the invention is according to the unloaded RSRP of residential quarter, the two-way total traffic of residential quarter and the load RSRP of the residential quarter in the measurement report, judging and determine the PCI of the current use in residential quarter, than prior art, the embodiment of the invention has not only adopted the RSRP data of unloaded situation, RSRP data and the total traffic data of load state have also been adopted, carrying out PCI according to so comparatively comprehensive data determines, can select to obtain comparatively reliable and effective PCI, thereby raising network running quality, improve the speech quality of terminal, can solve carrying out PCI planning according to inapt data and causing PCI to select irrational problem of existing in the prior art.

Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.

Claims (10)

1. a Physical Cell Identifier PCI determines method, it is characterized in that, comprising:

For current area, obtain the unloaded RSRP that unloaded Reference Signal Received Power RSRP under Light Condition, this residential quarter and this residential quarter based on current PC I receive each neighbor cell;

Obtain the two-way total traffic of this residential quarter, obtain the load RSRP of this residential quarter under load condition in the measurement report and the load RSRP that this residential quarter receives each neighbor cell;

Receive the load RSRP of each neighbor cell, the unloaded RSRP that the unloaded RSRP in this residential quarter that obtains and this residential quarter are received each neighbor cell according to this two-way total traffic that obtains and this cell load RSRP in the measurement report and this residential quarter and be weighted processing respectively, what obtain the RSRP of this residential quarter after the weighting and this residential quarter after the weighting respectively disturbs RSRP;

The RSRP that respectively disturbs of the RSRP of this residential quarter after the judgement weighting and this residential quarter after the weighting satisfies under the situation of predetermined regularization condition the side-play amount V of the transmission number of plies between selection and this residential quarter current PC I _ShiftThe PCI of difference maximum is as the PCI of the neighbor cell of this residential quarter.

2. the method for claim 1, it is characterized in that, receive the load RSRP of each neighbor cell, the unloaded RSRP that the unloaded RSRP in this residential quarter that obtains and this residential quarter are received each neighbor cell according to this two-way total traffic that obtains and this cell load RSRP in the measurement report and this residential quarter and be weighted processing respectively, specifically comprise:

According to weighting formula I ' (i)=A*I (i)+B*C (i) obtains the RSRP of this residential quarter after the weighting, wherein, I (i) is the unloaded RSRP of current area i, I ' (i) is the RSPR of the current area i after the weighting;

According to weighting formula I ' (i, j)=A*I (i, j)+B*C (i, j) obtain after the weighting this residential quarter respectively disturb RSRP, wherein, I (i, j) the unloaded RSRP of the neighbor cell j that receives for current area i, (i j) receives the interference RSRP of neighbor cell j to I ' for the current area i after the weighting;

Wherein, A is and the positively related telephone traffic coefficient of the two-way total traffic of described residential quarter, C (i) is the load RSRP of the current area i in the described measurement report, C (i, j) the load RSRP of the neighbor cell j that receives for the current area i in the described measurement report, B is for embodying the network coefficient of network the present situation, and A is the real number between 0 to 1, described telephone traffic coefficient A and described network coefficient B and be 1.

3. method as claimed in claim 2 is characterized in that, described telephone traffic coefficient A comprises:

Described telephone traffic coefficient A is the predetermined numerical value corresponding with the corresponding numerical value section of two-way total traffic numerical value of the residential quarter that obtains; Perhaps

Described telephone traffic coefficient A is the percentage form numerical value of the two-way total traffic numerical value of the residential quarter that obtains.

4. the method for claim 1 is characterized in that, described predetermined regularization condition specifically comprises:

Judge that whether the difference of interference RSRP of the RSRP of this residential quarter after the weighting and this residential quarter after the weighting is greater than predetermined threshold.

5. the method for claim 1 is characterized in that, the two-way total traffic of this residential quarter that obtains comprises: obtain the instantaneous two-way total traffic of this residential quarter constantly or the mean value of the two-way total traffic of this residential quarter of obtaining in a period of time.

6. the method for claim 1 is characterized in that, the described Reference Signal Received Power RSRP that obtains comprises: with frequency RSRP or alien frequencies RSRP.

7. a Physical Cell Identifier PCI determines device, it is characterized in that, comprising:

First acquisition module is used for for current area, obtains the unloaded RSRP that unloaded Reference Signal Received Power RSRP under Light Condition, this residential quarter and this residential quarter based on current PC I receive each neighbor cell;

Second acquisition module is used for obtaining the two-way total traffic of this residential quarter, obtains the load RSRP of this residential quarter under load condition in the measurement report and the load RSRP that this residential quarter receives each neighbor cell;

The weighting processing module, for the two-way total traffic and this cell load RSRP of measurement report and the load RSRP that this residential quarter receives each neighbor cell that obtain according to described second acquisition module, the unloaded RSRP that the unloaded RSRP in this residential quarter that described first acquisition module is obtained and this residential quarter receive each neighbor cell is weighted processing respectively, and what obtain the RSRP of this residential quarter after the weighting and this residential quarter after the weighting respectively disturbs RSRP;

Judge module is used for judging that the RSRP of this residential quarter after the weighting that obtains is handled in described weighting processing module weighting and whether the RSRP that respectively disturbs of this residential quarter after the weighting satisfies the regularization condition of being scheduled to;

The selection module is used for the RSRP of this residential quarter after described judge module is judged weighting and the RSRP that respectively disturbs of this residential quarter after the weighting and satisfies under the situation of predetermined regularization condition the side-play amount V of the transmission number of plies between selection and this residential quarter current PC I _ShiftThe PCI of difference maximum is as the PCI of the neighbor cell of this residential quarter.

8. device as claimed in claim 7, it is characterized in that, described weighting processing module, concrete be used for according to weighting formula I ' (i)=A*I (i)+B*C (i) obtains the RSRP of this residential quarter after the weighting, wherein, I (i) is the unloaded RSRP of current area i, and I ' is the RSPR of the current area i after the weighting (i); According to weighting formula I ' (i, j)=A*I (i, j)+B*C (i, j) obtain after the weighting this residential quarter respectively disturb RSRP, wherein, and I (i, j) RSRP is disturbed in the zero load of the neighbor cell j that receives for current area i, (i j) receives the interference RSRP of neighbor cell j to I ' for the current area i after the weighting; Wherein, A is and the positively related telephone traffic coefficient of the two-way total traffic of described residential quarter, C (i) is the load RSRP of the current area i in the described measurement report, C (i, j) RSRP is disturbed in the load of the neighbor cell j that receives for the current area i in the described measurement report, B is for embodying the network coefficient of network the present situation, and A is the real number between 0 to 1, described telephone traffic coefficient A and described network coefficient B and be 1.

9. device as claimed in claim 7 is characterized in that, described judge module, and whether the difference of the interference RSRP of the concrete RSRP that is used for judging this residential quarter after the weighting and this residential quarter after the weighting is greater than predetermined threshold.

10. device as claimed in claim 7 is characterized in that, described second acquisition module specifically is used for: obtain at the instantaneous two-way total traffic that obtains this residential quarter constantly or obtain the mean value of the two-way total traffic of this residential quarter in a period of time.

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