CN103327505B - The defining method of Physical Cell Identifier and device - Google Patents
The defining method of Physical Cell Identifier and device Download PDFInfo
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- CN103327505B CN103327505B CN201210073140.2A CN201210073140A CN103327505B CN 103327505 B CN103327505 B CN 103327505B CN 201210073140 A CN201210073140 A CN 201210073140A CN 103327505 B CN103327505 B CN 103327505B
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Abstract
The invention discloses a kind of Physical Cell Identifier defining method and device, the method is by receiving the mode of load RSRP by weighting process of neighbor cell by the load reference Signal reception power RSRP of the two-way total traffic of community and measurement report Zhong Gai community and this community, be loaded into the unloaded RSRP of community, and this community receives on the unloaded RSRP of each neighbor cell, obtain reflecting community actual loading and network operation situation, the RSRP of weighting Hou Gai community and each interference RSRP of this community, judge that the RSRP of weighting Hou Gai community and the interference RSRP of this community carries out the selection of PCI when meeting predetermined regularization condition, can by unloaded for network situation, the actual traffic load situation in community, network practical operation situation combines the planning and selection of carrying out PCI, can solve in prior art according to inapt data carry out PCI planning cause PCI to select irrational problem.
Description
Technical field
The present invention relates to mobile communication system, especially relate to a kind of defining method and device of Physical Cell Identifier.
Background technology
Physical Cell Identifier (PhysicalCellIdentifier, PCI) be Long Term Evolution (LongTermEvolution, LTE) a system small area important mark in the wireless network is also terminal distinguishing cell and measure the unique identification reported.The link that PCI planning is very important in LTE system wireless network planning and LTE system wireless network are built.Reasonably distribute and use the PCI of LTE system, the resource utilization, the raising overall network quality that reduce interference, improve system can be put forward.At present, the PCI quantity in LTE system only has 504, and is only divided into 168 groups, in the situation of large-scale network-estabilishing, if do not carry out multiplexing, is difficult to the demand meeting real network.When large-scale network-estabilishing, particularly when identical networking, spendable PCI is just more rare.For this self-interference system of LTE, except needing the absolute incoming level of good wireless channel, also need higher signal and interference and noise ratio (SignaltoInterferenceIlusNoiseRatio, SINR).If PCI planning is unreasonable, reference signal (ReferenceSignal, RS) can be made to produce position collision, cause wireless channel reference signal incoming level very high, but SINR is very low, and then cause covering cavity.
In existing technical scheme, the general measurement report reported according to LTE terminal that adopts is planned.The obvious deficiency of the method is, in LTE system, the measurement report that agreement prescribed terminal reports not is periodically, but relies on event driven, as in the situations such as handoff failure.This measurement report produced under given conditions just causes the disturbed condition that at all cannot obtain whole network.The result that PCI will be made like this to plan and actual conditions cause very large discrepancy.For 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 example, in LTE system, PCI is the unique identification of distinguishing cell, and LTE system can carry out scrambling, as PBCH, PDCCH, PCFICH etc. with PCI to the signal of multiple channel simultaneously.This shows the planning quality of PCI, will directly affect the network quality of LTE system.According to the regulation of 3GPP agreement, baseband signal is mapped to Resource Unit (ResourceElement, RE),
wherein k=6m+ (v+v
shift) mod6.As can be seen from following formula, in resource mapping process, the location parameter k of resource depends on v and v
shift.Wherein
Wherein, k is the frequency domain call number of RE, and v is the quantity of transport layer, and p is antenna port number, and l is the time domain call number of RE, n
sbe the timeslot number in a radio frames, v
shiftfor transmitting the side-play amount of the number of plies,
for the physical-layer cell ID of community.If just can extrapolate PCI like this in the situation that comes to the same thing asking mould with 3 and 6 according to above-mentioned formula, the position of resource mapping will be consistent, causes signal to collide, thus produce co-channel interference.
In addition, in PCI planning process, the disturbed condition of the minizone of institute's foundation is obtained by the measurement report of terminal to report.But the measurement report of terminal to report cannot reflect the actual loading situation of the network that gives the correct time, namely terminal cannot learn that when reporting measurement reports now network is unloaded situation or fully loaded situation or other loading condition.Like this, the measurement report of terminal to report is some completely discrete numerical value, and some interference value measured is zero, according to the foundation that more so discontinuous measurement reports are planned as PCI, rationally effective PCI program results cannot be drawn, thus the call situation of terminal, the network operation are had an impact.
Visible, exist in the prior art at present according to inapt data carry out PCI planning cause PCI to select irrational problem.
Summary of the invention
Embodiments provide a kind of Physical Cell Identifier defining method, in order to solve in prior art according to uncertain data carry out PCI planning cause PCI to select irrational problem.
Accordingly, the embodiment of the present invention additionally provides a kind of Physical Cell Identifier determining device.
Embodiment of the present invention technical scheme is as follows:
A kind of Physical Cell Identifier PCI defining method, comprising: for current area, obtain based on current PC I in the unloaded state, the unloaded Reference Signal Received Power RSRP of this community and this community receive the unloaded RSRP of each neighbor cell; Obtain the two-way total traffic of this community, the load RSRP of this community in the loaded state in acquisition measurement report and this community receive the load RSRP of each neighbor cell; The load RSRP receiving each neighbor cell according to this cell load RSRP in the two-way total traffic of this acquisition and measurement report and this community, the unloaded RSRP the obtained unloaded RSRP in this community and this community being received to each neighbor cell are weighted process respectively, obtain the RSRP of weighting Hou Gai community and each interference RSRP of weighting Hou Gai community; When judging that the RSRP of weighting Hou Gai community and each interference RSRP of weighting Hou Gai community meets predetermined regularization condition, select the side-play amount V of the transmission number of plies between the current PC I of this community
shiftthe maximum PCI of difference is as the PCI of the neighbor cell of this community.
A kind of Physical Cell Identifier PCI determining device, comprise: the first acquisition module, for for current area, obtain based on current PC I in the unloaded state, the unloaded Reference Signal Received Power RSRP of this community and this community receive the unloaded RSRP of each neighbor cell; Second acquisition module, for obtaining the two-way total traffic of this community, the load RSRP of this community in the loaded state in acquisition measurement report and this community receive the load RSRP of each neighbor cell; Weighting processing module, the load RSRP of each neighbor cell is received for this cell load RSRP in the two-way total traffic that obtains according to the second acquisition module and measurement report and this community, the unloaded RSRP that the unloaded RSRP in this community obtain the first acquisition module and this community receive each neighbor cell is weighted process respectively, obtains the RSRP of weighting Hou Gai community and each interference RSRP of weighting Hou Gai community; Judge module, whether each interference RSRP for the RSRP and weighting Hou Gai community that judge the weighting Hou Gai community that weighting processing module weighting process obtains meets predetermined regularization condition; Select module, each interference RSRP for the RSRP and weighting Hou Gai community that judge weighting Hou Gai community at judge module meets predetermined regularization condition, select the side-play amount V of the transmission number of plies between the current PC I of this community
shiftthe maximum PCI of difference is as the PCI of the neighbor cell of this community.
According to the technical scheme that the embodiment of the present invention provides, by the load RSRP of the two-way total traffic of community and measurement report Zhong Gai community and this community being received the mode of load RSRP by weighting process of neighbor cell, be loaded into the unloaded RSRP of community, and this community receives on the unloaded RSRP of each neighbor cell, obtain reflecting community actual loading and network operation situation, the RSRP of weighting Hou Gai community and each interference RSRP of this community, judge that the RSRP of weighting Hou Gai community and the interference RSRP of this community carries out the selection of PCI when meeting predetermined regularization condition, can by unloaded for network situation, the actual traffic load situation in community, network practical operation situation combines the planning and selection of carrying out PCI, thus can solve in prior art according to inapt data carry out PCI planning cause PCI to select irrational problem.
Accompanying drawing explanation
Fig. 1 is the workflow diagram of the PCI defining method according to the embodiment of the present invention;
Fig. 2 is the structural framing figure of the PCI determining device according to the embodiment of the present invention.
Embodiment
The embodiment of the present invention plans irrational problem for the PCI existed in prior art, proposes the determination scheme of a kind of PCI, in order to solve this problem.
In the determination scheme of the PCI provided in the embodiment of the present invention, obtain respectively based on current PC I in the unloaded state, the unloaded RSRP (i.e. each zero load interference in community RSRP) of other community that the unloaded RSRP of community and this community receive, and obtain the load RSRP that the load RSRP of this community in the loaded state in the two-way total traffic of this community and measurement report and this community receive each neighbor cell, (i.e. each load disturbance RSRP in community); And according to the two-way total traffic of this community obtained and cell load RSRP and each load disturbance RSRP in community, process is weighted to the unloaded RSRP in this community and this community each zero load interference RSRP, and judgement is weighted the process RSRP of Hou Gai community and each of this community disturbs RSRP when meeting predetermined regularization condition, selects the V between the current PC I of this community
shiftthe maximum PCI of difference is as the PCI of the neighbor cell of this community, unloaded for network situation, the actual traffic load situation in community, network practical operation situation can be combined the determination and selection of carrying out PCI, the visible embodiment of the present invention carries out determination and the selection of PCI according to comparatively comprehensive data, can overcome to carry out PCI planning according to inapt data in prior art and cause PCI to select irrational problem.
Below the embodiment of the present invention is described in detail.
Fig. 1 shows the workflow diagram of the PCI defining method according to the embodiment of the present invention, and as shown in Figure 1, the method comprises following processing procedure.
Step 11, for current area, obtain based on current PC I in the unloaded state, the unloaded Reference Signal Received Power RSRP of this community and this community receive the unloaded RSRP of each neighbor cell;
Step 12, obtain the two-way total traffic of this community, obtain the load RSRP that the load RSRP of this community in the loaded state in measurement report and this community receive each neighbor cell;
Step 13, the load RSRP receiving each neighbor cell according to this cell load RSRP in the two-way total traffic of this acquisition and measurement report and this community, the unloaded RSRP the obtained unloaded RSRP in this community and this community being received to each neighbor cell are weighted process respectively, obtain the RSRP of weighting Hou Gai community and each interference RSRP of weighting Hou Gai community;
When each interference RSRP of step 14, the RSRP judging weighting Hou Gai community and weighting Hou Gai community meets predetermined regularization condition, select the side-play amount V of the transmission number of plies between the current PC I of this community
shiftthe maximum PCI of difference is as the PCI of the neighbor cell of this community.
According to method as shown in Figure 1, by by the mode of the cell load RSRP in the two-way total traffic of community and measurement report and each load disturbance RSRP by weighting process, be loaded on the unloaded RSRP in community and on each zero load interference RSRP, obtain reflecting the RSRP of the community after the weighting of community actual loading and network operation situation and each interference RSRP, judge that the RSRP of the community after weighting and each interference RSRP carries out the selection of PCI when meeting predetermined regularization condition, can by unloaded for network situation, the actual traffic load situation in community, network practical operation situation combines the determination and selection of carrying out PCI, thus can solve in prior art according to inapt data carry out PCI planning cause PCI to select irrational problem.
A kind of preferred mode, the preferred implementation of method shown in Fig. 1 comprises following processing procedure.
Step one, a selected region to be planned, this region comprises n community, and this region can be polygonal region, and n is natural number;
Step 2, mode by the whole network frequency sweep, under obtaining network no-load condition, based on the unloaded RSRP of each community of current PC I and unloaded interference RSRP, this RSRP can be with frequency RSRP or alien frequencies RSRP, the RSRP obtained can be as shown in table 1, in Table 1, the unloaded RSRP of the same frequency that It (i) is cell i, the unloaded RSRP of the alien frequencies that Il (i) is cell i, It (i, the same frequency zero load interference RSRP of the community j j) received for cell i, the alien frequencies zero load interference RSRP of the community j that Il (i, j) receives for cell i;
Table 1
Step 3, obtain the RSRP in the two-way total traffic of each community and measurement report, wherein, the two-way total traffic of community can be the instantaneous two-way total traffic obtaining moment community, also can be the mean value of the two-way total traffic of this community obtained within a period of time, RSRP in measurement report is the RSRP of the community that terminal can measure to the terminal that eNodeB reports, comprise the RSRP of this community, and this community receives the RSRP of each neighbor cell, i.e. cell load RSRP, and each load disturbance RSRP in community, cell load RSRP can be expressed as C (i), the each load disturbance RSRP in community can be expressed as C (i, j), because RSRP comprises with frequency RSRP and alien frequencies RSRP, cell load RSRP comprises community with load RSRP and Ct frequently (i) and community alien frequencies load RSRP and Cl (i), it is each with frequency load disturbance RSRP and Ct (i that community each load disturbance RSRP comprises community, j) with community each alien frequencies load disturbance RSRP and Cl (i, j),
Step 4, according to the RSRP in the two-way total traffic of each community obtained and measurement report, under the unloaded situation in each community, be weighted process based on the RSRP (as shown in table 1) of current PC I;
Particularly, the RSRP of weighting Hou Gai community can be obtained according to weighted formula I ' (i)=A*I (i)+B*C (i), wherein, the unloaded RSRP that I (i) is current area i, I ' (i) is the RSPR of the current area i after weighting, A is telephone traffic coefficient positively related with the two-way total traffic of current area, B is the net coefficients embodying network the present situation, A is the real number between 0 to 1, telephone traffic coefficient A and net coefficients be B's and be the load RSRP of 1, C (i) for the current area i in measurement report, because RSRP comprises with frequency RSRP and alien frequencies RSRP, this weighted formula can comprise: It ' (i)=A*It (i)+B*Ct (i) and Il ' (i)=A*Il (i)+B*Cl (i), the unloaded RSRP of the same frequency that It (i) is current area i, the same frequency RSRP that It ' (i) is the current area i after weighting, the unloaded RSRP of the alien frequencies that Il (i) is current area i, Il ' (i) is the alien frequencies RSRP of the current area i after weighting, the same frequency load RSRP that Ct (i) is the current area i in measurement report, the alien frequencies load RSRP that Cl (i) is the current area i in measurement report,
According to weighted formula I ' (i, j)=A*I (i, j)+B*C (i, j) RSRP of other community that weighting Hou Gai community receives and the interference RSRP of weighting Hou Gai community is obtained, wherein, I (i, the zero load interference RSRP of the neighbor cell j j) received for current area i, I ' (i, the interference RSRP of the neighbor cell j j) received for the current area i after weighting, A is telephone traffic coefficient positively related with the two-way total traffic of current area, B is the net coefficients embodying network the present situation, A is the real number between 0 to 1, telephone traffic coefficient A and net coefficients be B's and be 1, C (i, the load disturbance RSRP of the neighbor cell j j) received for the current area i in measurement report, because RSRP comprises with frequency RSRP and alien frequencies RSRP, this weighted formula can comprise: It ' (i, j)=A*It (i, j)+B*Ct (i, j) with Il ' (i, j)=A*Il (i, j)+B*Cl (i, j), It (i, the same frequency zero load interference RSRP of the neighbor cell j j) received for current area i, It ' (i, the co-channel interference RSRP of the neighbor cell j j) received for the current area i after weighting, Il (i, j) be the alien frequencies zero load interference RSRP at the neighbor cell j that current area i receives, Il ' (i, alien frequencies interference RSPR after the weighting of the neighbor cell j j) received for current area i, Ct (i, the same frequency load disturbance RSRP of the neighbor cell j j) received for the current area i in measurement report, Cl (i, the alien frequencies load disturbance RSRP of the neighbor cell j j) received for the current area i in measurement report,
Can be as shown in table 2 according to each RSRP after above-mentioned weighted formula weighting;
Table 2
A kind of preferred mode, the numerical value that the numerical value section of telephone traffic coefficient A corresponding to two-way total traffic numerical value that the is predetermined and community obtained is corresponding, or A is the percents numerical value of the two-way total traffic numerical value of the community obtained;
Step 5, each community for PCI to be determined, judge whether predetermined regularization condition I ' (i)-I ' (i, j) > α sets up respectively, when judging that this formula is set up, process proceeds to step 6, otherwise process proceeds to step 7; For regularization condition I ' (i)-I ' (i, j) > α, particularly, can distinguish and judge It ' (i)-It ' (i respectively with frequency RSRP or alien frequencies RSRP, j) > α or Il ' (i)-Il ' (i, j) > α, α is predetermined threshold value, can according to different channels or network condition, set the value of α in the concrete process implemented, such as, α=3db can be set;
Step 6, when judging that I ' (i)-I ' (i, j) > α sets up, PCI being reselected for community j, specifically can select the V between the PCI that cell i is current
shiftthe maximum PCI of difference, as the PCI of community j, the processing returns to step two, namely carries out iterative processing to above-mentioned steps two to step 6;
A kind of preferred mode, in the concrete process implemented, can also judge whether the number of times each community of PCI to be allocated being carried out to above-mentioned iterative processing reaches predetermined number of times, when reaching predetermined number of times, process proceeds to step 7, can alleviate the computing complexity that PCI determines like this;
A kind of preferred mode, in the concrete process implemented, can reserve for spendable PCI, can control the quantity of the PCI participated in the distribution like this, thus reach relative equilibrium between the computational complexity determined at PCI and the accuracy of determination result;
Step 7, the PCI of each community is determined that process completes.
According to above-mentioned steps, by the cell load RSRP in the two-way total traffic of community and measurement report and cell load interference RSRP by the mode of weighting process, be loaded into that the unloaded RSRP in community and community zero load interference RSRP is upper, the RSRP of community after the weighting that obtains reflection community actual loading and network operation situation and area interference RSRP, when the difference judging between the RSRP of the community after weighting and area interference RSRP is greater than predetermined threshold value, by the V between PCI current for community
shiftthe maximum PCI of difference is as the PCI of the neighbor cell of this community, unloaded for network situation, the actual traffic load situation in community, network practical operation situation can be combined the determination and selection of carrying out PCI, thus can solve and carry out PCI according to inapt data in prior art and plan and cause PCI to select irrational problem.
Compare and carry out PCI with the sporadic data that only reports according to measurement report in prior art and determine, community unloaded RSRP, load RSRP and cellular traffic data are adopted to carry out integrated treatment in the embodiment of the present invention, these data more can reflect network actual operating state and disturbed condition, can determine to provide more continuous, effective definition base for PCI.
For realizing above-mentioned functions, the embodiment of the present application PCI defining method here can pass through hardware implementing, also can be realized by following software program, is namely realized the determination of PCI by following PCI determining device.
Fig. 2 shows the structural framing figure of the PCI determining device according to the embodiment of the present invention, and as shown in Figure 2, this device comprises: the first acquisition module 1, second acquisition module 2, weighting processing module 3, judge module 4, selection module 5.
First acquisition module 1, for for current area, obtain based on current PC I in the unloaded state, the unloaded Reference Signal Received Power RSRP of this community and this community receive the unloaded RSRP of each neighbor cell;
Second acquisition module 2, for obtaining the two-way total traffic of this community, the load RSRP of this community in the loaded state in acquisition measurement report and this community receive the load RSRP of each neighbor cell; A kind of preferred mode, the second acquisition module 2 obtains the instantaneous two-way total traffic in this community obtaining the moment or obtains the mean value of the two-way total traffic in a period of time Nei Gai community;
Weighting processing module 3, be connected to the first acquisition module 1, second acquisition module 2, the load RSRP of each neighbor cell is received for this cell load RSRP in the two-way total traffic that obtains according to the second acquisition module 2 and measurement report and this community, the unloaded RSRP that the unloaded RSRP in this community obtain the first acquisition module 1 and this community receive each neighbor cell is weighted process respectively, obtains the RSRP of weighting Hou Gai community and each interference RSRP of weighting Hou Gai community;
A kind of preferred mode, weighting processing module 3, the RSRP of weighting Hou Gai community is obtained according to weighted formula I ' (i)=A*I (i)+B*C (i), wherein, the unloaded RSRP that I (i) is current area i, I ' (i) are the RSPR of the current area i after weighting; According to weighted formula I ' (i, j)=A*I (i, j)+B*C (i, j) each interference RSRP of weighting Hou Gai community is obtained, wherein, the zero load interference RSRP of the neighbor cell j that receives for current area i of I (i, j), I ' (i, j) receives the interference RSRP of neighbor cell j for the current area i after weighting; Wherein, A is telephone traffic coefficient positively related with the two-way total traffic of described community, C (i) is the load RSRP of the current area i in described measurement report, C (i, the load disturbance RSRP of the neighbor cell j j) received for the current area i in described measurement report, B is the net coefficients embodying network the present situation, and A is the real number between 0 to 1, and described telephone traffic coefficient A and described net coefficients be B's and be 1;
Judge module 4, is connected to weighting processing module 3, and whether each interference RSRP for the RSRP and weighting Hou Gai community that judge the weighting Hou Gai community that weighting processing module 3 weighting process obtains meets predetermined regularization condition;
A kind of preferred mode, whether judge module 4 is greater than predetermined threshold specifically for the difference of the interference RSRP of the RSRP and weighting Hou Gai community that judge weighting Hou Gai community;
Select module 5, be connected to judge module 4, each interference RSRP for the RSRP and weighting Hou Gai community that judge weighting Hou Gai community at judge module 4 meets predetermined regularization condition, select the side-play amount V of the transmission number of plies between the current PC I of this community
shiftthe maximum PCI of difference is as the PCI of the neighbor cell of this community.
According to device as shown in Figure 2, by above-mentioned module, by the mode of the cell load RSRP in the two-way total traffic of community and measurement report and each load disturbance RSRP by weighting process, be loaded on the unloaded RSRP in community and on each zero load interference RSRP, obtain reflecting the RSRP of the community after the weighting of community actual loading and network operation situation and each interference RSRP, judge that the RSRP of the community after weighting and each interference RSRP carries out the selection of PCI when meeting predetermined regularization condition, can by unloaded for network situation, the actual traffic load situation in community, network practical operation situation combines the determination and selection of carrying out PCI, thus can solve in prior art according to inapt data carry out PCI planning cause PCI to select irrational problem.
In sum, the embodiment of the present invention is according to the unloaded RSRP of community, the load RSRP of the community in the two-way total traffic of community and measurement report, the carrying out of the PCI of the current use in community is judged and determined, compared to prior art, the embodiment of the present invention not use only the RSRP data of unloaded situation, additionally use RSRP data and the total traffic data of load state, carry out PCI according to so comparatively comprehensive data to determine, can select to obtain comparatively reliable and effective PCI, thus raising network running quality, improve the speech quality of terminal, can solve exist in prior art according to inapt data carry out PCI planning cause PCI to select irrational problem.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (6)
1. a Physical Cell Identifier PCI defining method, is characterized in that, comprising:
For current area, obtain based on current PC I in the unloaded state, the unloaded Reference Signal Received Power RSRP of this community and this community receive the zero load interference RSRP of each neighbor cell;
Obtain the two-way total traffic of this community, the load RSRP of this community in the loaded state in acquisition measurement report and this community receive the load disturbance RSRP of each neighbor cell;
The load disturbance RSRP receiving each neighbor cell according to this cell load RSRP in the two-way total traffic of this acquisition and measurement report and this community, the zero load interference RSRP the obtained unloaded RSRP in this community and this community being received to each neighbor cell are weighted process respectively, obtain the RSRP of weighting Hou Gai community and each interference RSRP of weighting Hou Gai community;
When judging that the RSRP of weighting Hou Gai community and each interference RSRP of weighting Hou Gai community meets predetermined regularization condition, select the side-play amount V of the transmission number of plies between the current PC I of this community
shiftthe maximum PCI of difference is as the PCI of the neighbor cell of this community;
The load disturbance RSRP receiving each neighbor cell according to this cell load RSRP in the two-way total traffic of this acquisition and measurement report and this community, the zero load interference RSRP the obtained unloaded RSRP in this community and this community being received to each neighbor cell are weighted process respectively, specifically comprise:
According to weighted formula I'(i)=A*I (i)+B*C (i) obtains the RSRP of weighting Hou Gai community, wherein, unloaded RSRP, I'(i that I (i) is current area i) be the RSPR of the current area i after weighting;
According to weighted formula I'(i, j)=A*I (i, j)+B*C (i, j) each interference RSRP of weighting Hou Gai community is obtained, wherein, the zero load interference RSRP of the neighbor cell j that receives for current area i of I (i, j), I'(i, j) receive the interference RSRP of neighbor cell j for the current area i after weighting;
Wherein, A is telephone traffic coefficient positively related with the two-way total traffic of described community, C (i) is the load RSRP of the current area i in described measurement report, C (i, the load disturbance RSRP of the neighbor cell j j) received for the current area i in described measurement report, B is the net coefficients embodying network the present situation, and A is the real number between 0 to 1, and described telephone traffic coefficient A and described net coefficients be B's and be 1;
Described predetermined regularization condition, specifically comprises:
Judge whether the difference of the RSRP of weighting Hou Gai community and the interference RSRP of weighting Hou Gai community is greater than predetermined threshold.
2. the method for claim 1, is characterized in that, described telephone traffic coefficient A comprises:
The numerical value that the numerical value section of described telephone traffic coefficient A corresponding to the two-way total traffic numerical value of the predetermined community with obtaining is corresponding; Or
Described telephone traffic coefficient A is the percents numerical value of the two-way total traffic numerical value of the community obtained.
3. the method for claim 1, is characterized in that, the two-way total traffic of this community of acquisition comprises: the instantaneous two-way total traffic obtaining this community in moment or the mean value of the two-way total traffic of this community obtained within a period of time.
4. the method for claim 1, is characterized in that, the described Reference Signal Received Power RSRP of acquisition comprises: with frequency RSRP or alien frequencies RSRP.
5. a Physical Cell Identifier PCI determining device, is characterized in that, comprising:
First acquisition module, for for current area, obtain based on current PC I in the unloaded state, the unloaded Reference Signal Received Power RSRP of this community and this community receive the zero load interference RSRP of each neighbor cell;
Second acquisition module, for obtaining the two-way total traffic of this community, the load RSRP of this community in the loaded state in acquisition measurement report and this community receive the load disturbance RSRP of each neighbor cell;
Weighting processing module, the load disturbance RSRP of each neighbor cell is received for this cell load RSRP in the two-way total traffic that obtains according to described second acquisition module and measurement report and this community, the zero load interference RSRP that the unloaded RSRP in this community obtain described first acquisition module and this community receive each neighbor cell is weighted process respectively, obtains the RSRP of weighting Hou Gai community and each interference RSRP of weighting Hou Gai community;
Judge module, whether each interference RSRP for the RSRP and weighting Hou Gai community that judge the weighting Hou Gai community that described weighting processing module weighting process obtains meets predetermined regularization condition;
Select module, each interference RSRP for the RSRP and weighting Hou Gai community that judge weighting Hou Gai community at described judge module meets predetermined regularization condition, select the side-play amount V of the transmission number of plies between the current PC I of this community
shiftthe maximum PCI of difference is as the PCI of the neighbor cell of this community;
Described weighting processing module, specifically for according to weighted formula I'(i)=A*I (i)+B*C (i) obtains the RSRP of weighting Hou Gai community, wherein, unloaded RSRP, I'(i that I (i) is current area i) be the RSPR of the current area i after weighting; According to weighted formula I'(i, j)=A*I (i, j)+B*C (i, j) each interference RSRP of weighting Hou Gai community is obtained, wherein, the zero load interference RSRP of the neighbor cell j that receives for current area i of I (i, j), I'(i, j) receive the interference RSRP of neighbor cell j for the current area i after weighting; Wherein, A is telephone traffic coefficient positively related with the two-way total traffic of described community, C (i) is the load RSRP of the current area i in described measurement report, C (i, the load disturbance RSRP of the neighbor cell j j) received for the current area i in described measurement report, B is the net coefficients embodying network the present situation, and A is the real number between 0 to 1, and described telephone traffic coefficient A and described net coefficients be B's and be 1;
Described judge module, whether the difference specifically for the interference RSRP of the RSRP and weighting Hou Gai community that judge weighting Hou Gai community is greater than predetermined threshold.
6. device as claimed in claim 5, is characterized in that, described second acquisition module, specifically for: obtain the instantaneous two-way total traffic in this community obtaining the moment or obtain the mean value of the two-way total traffic in a period of time Nei Gai community.
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| CN201210073140.2A CN103327505B (en) | 2012-03-19 | 2012-03-19 | The defining method of Physical Cell Identifier and device |
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| CN103781076B (en) * | 2014-01-16 | 2017-04-12 | 上海大唐移动通信设备有限公司 | Physical cell identify distribution method and device |
| CN106465158A (en) * | 2014-01-20 | 2017-02-22 | 诺基亚通信公司 | Resolving identification code ambiguities in wireless access networks |
| US9781752B2 (en) * | 2014-11-13 | 2017-10-03 | Wipro Limited | Systems and methods for effective physical cell identifier reuse |
| CN104735717B (en) * | 2015-04-15 | 2018-07-27 | 广东海格怡创科技有限公司 | Cell PCI configuration methods and system |
| CN104837143B (en) * | 2015-04-15 | 2018-09-28 | 广东海格怡创科技有限公司 | Cell PCI configuration methods and system |
| CN108260157A (en) * | 2016-12-28 | 2018-07-06 | 大唐移动通信设备有限公司 | Reduce the method and device of adjacent area interference |
| CN108540987B (en) * | 2017-03-02 | 2021-10-01 | 中国移动通信集团广东有限公司 | LTE network coverage state evaluation method and device |
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