CN102413499B - Simulation method for inter-cell interference coordination, and device therefor - Google Patents
Simulation method for inter-cell interference coordination, and device therefor Download PDFInfo
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- CN102413499B CN102413499B CN201010288652.1A CN201010288652A CN102413499B CN 102413499 B CN102413499 B CN 102413499B CN 201010288652 A CN201010288652 A CN 201010288652A CN 102413499 B CN102413499 B CN 102413499B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
- H04W52/28—TPC being performed according to specific parameters using user profile, e.g. mobile speed, priority or network state, e.g. standby, idle or non transmission
- H04W52/281—TPC being performed according to specific parameters using user profile, e.g. mobile speed, priority or network state, e.g. standby, idle or non transmission taking into account user or data type priority
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
- H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
- H04W52/243—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account interferences
- H04W52/244—Interferences in heterogeneous networks, e.g. among macro and femto or pico cells or other sector / system interference [OSI]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
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Abstract
The invention discloses a simulation method for inter-cell interference coordination, and a device for the inter-cell interference coordination. The method comprises the steps of: confirming user equipment belonging to a cell-center user class and user equipment belonging to a cell-edge user class; confirming a neighboring cell which has inter-cell interference coordination interaction with the cell; according to a relative narrow-band transmission power indication preset value and the information of the neighboring cell, confirming the priority of physical resource blocks of all user equipment which take part in the inter-cell interference coordination; according to the priority of the physical resource blocks, carrying out scheduling of resources and then controlling the power allocation; and according to the scheduling condition, setting the actual relative narrow-band transmission power indication of the cell, and noticing the neighboring cell. The method and the device disclosed by the invention can be used for simulating and realizing downstream semi-static inter-cell interference coordination technology in a static planning simulation platform which is not capable of simulating information interaction of an X2 interface.
Description
Technical field
The present invention relates to wireless communication field, particularly a kind of analogy method of Inter-Cell Interference Coordination and equipment.
Background technology
The end of the year 2004,3GPP (3rd Generation partnership project, 3 generation collaborative project) by UMTS (Universal Mobile Telecommunications System, universal mobile telecommunications system) research of LTE (Long Term Evolution, Long Term Evolution) project of technology put on schedule.For can with WiMAX (the World Interoperability for MicrowaveAccess that can support 20MHz bandwidth, whole world inserting of microwave interconnection technique) technology contends with, LTE has selected OFDM/FDMA (Orthogonal Frequency Division Multiplex/Frequency Division MultipleAccess, OFDM/frequency division multiple access) technology as its core transmission technology.
How to improve edge customer throughput, ensure that edge customer QoS (Quality of Service, service quality) is the problem that LTE system need to be considered.Cell Edge User from base station distance away from, signal attenuation is larger, simultaneously owing to having adopted OFDM technology, cell spectrum resource can overlap, this will cause larger interference to the edge customer of interfered cell, cause the low SINR (Signal to Interference plus Noise Ratio, Signal to Interference plus Noise Ratio) of Cell Edge User.Therefore, LTE system has adopted ICIC (Inter-Cell Interference Coordinate, Inter-Cell Interference Coordination) technology to suppress presence of intercell interference, ensures LTE systematic function.
From network planning platform, due to the difference between LTE and other communication standards, existing many planning platforms can not directly overlap to be used in LTE system.In addition, as a kind of new technology, existing planning platform had not related to the problem of implementation of ICIC, and the information interaction of semi-static ICIC scheme required X2 interface completing while realizing is also the difficult problem that ICIC is achieved in static programming software.Therefore, how by semi-static ICIC scheme, apply in the network planning software for LTE system, analogue simulation network condition, is a difficult problem needing solution in prior art badly.
Existing descending semi-static ICIC technology mainly lays particular emphasis on the research of dynamic simulation platform or the realization of existing network product.Need coordinate according to the mutual information of X2 interface.The scheme below prior art being adopted describes.
The deficiencies in the prior art are: existing ICIC technology mainly lays particular emphasis on the research of dynamic simulation platform or the realization of existing network product.Its platform or network environment are dynamic, and can realize the information interaction of S1, X2 interface, meet the demand that realizes of semi-static ICIC scheme.And network planning Optimization Software itself is exactly to the abstract of network environment and simulation, as a kind of STATIC SIMULATION platform, can not simulate the information interaction of X2 interface.
Summary of the invention
The invention provides a kind of analogy method and equipment of Inter-Cell Interference Coordination, in order to simulate the descending ICIC in LTE in static environment.
The analogy method that a kind of ICIC is provided in the embodiment of the present invention, comprises the steps:
Determine the UE that belongs to central user class and the UE that belongs to edge customer class;
Determine with local area and carry out the mutual adjacent area of ICIC;
According to the PRB priority of RNTP preset value and the definite each UE that participates in ICIC of neighboring BS information;
Carry out after scheduling of resource, power division being controlled according to the priority of PRB;
According to scheduling situation, the actual RNTP of local area is set, and informs adjacent area.
The analog machine that a kind of ICIC is provided in the embodiment of the present invention, comprising:
User's determination module, for determining the UE that belongs to central user class and the UE that belongs to edge customer class;
Adjacent area determination module, carries out the mutual adjacent area of ICIC for determining with local area;
Priority determination module, for determining the PRB priority of the each UE that participates in ICIC according to RNTP preset value and neighboring BS information;
Scheduling and power control module, for carrying out after scheduling of resource, power division being controlled according to the priority of PRB;
Notification module, for the actual RNTP of local area is set according to scheduling situation, and informs adjacent area.
Beneficial effect of the present invention is as follows:
The present invention is in implementation process, first according to the PRB priority of RNTP preset value and the definite each UE that participates in ICIC of neighboring BS information; Then carry out after scheduling of resource, power division being controlled according to the priority of PRB at local area; The actual RNTP of local area is being set according to scheduling situation, and is informing adjacent area.In this process, the resource of actual employing can be determined according to the situation of adjacent area and the resource situation of self in each community, and provide each adjacent area by the resource situation of self actual use, for carrying out resource setting in each adjacent area, although there is no the information from X2 interface, but also realize the ICIC process of individual minizone, therefore also make the technical scheme that the embodiment of the present invention provides can be in the static programming emulation platform that cannot simulate X2 interface information interaction, simulate and realize descending semi-static ICIC technology.
The technical scheme that the embodiment of the present invention provides can be in static environment (or various condition without interface message) analog IC IC, simulation real network situation builds model, by the parameter adjustment under different scenes, seek the preferred plan that ICIC realizes, for the scheme selection of ICIC in reality realizes and ICIC relevant parameter are set, provide can be with reference to foundation; Determine every network planning parameter of considering after semi-static ICIC in real network, as down transmitting power etc. simultaneously.
Brief description of the drawings
Fig. 1 is the analogy method implementing procedure schematic diagram of ICIC in the embodiment of the present invention;
Fig. 2 is the ICIC implementing procedure schematic diagram of all communities in the embodiment of the present invention;
Fig. 3 is the analog machine structural representation of ICIC in the embodiment of the present invention.
Embodiment
3GPP LTE system descending channel has adopted OFDM (OFDM) technology as its transmission technology.When LTE adopts OFDM technology to be plot planning frequency resource, utilize sub-carrier orthogonality, evade the interference between each user in community.Therefore, presence of intercell interference will become the main interference source between user in LTE system.In order to ensure the transmission performance of good communication quality, particularly Cell Edge User, LTE system has been introduced a key technology: Inter-Cell Interference Coordination (ICIC) technology.
ICIC realizing effect and will directly affect network planning performance in LTE planning.But, the temporary problem of implementation that does not relate to ICIC in the network planning known today.Along with the raising of network planning demand, this will be a ring of urgently filling up in network planning Optimization Work.Given this, a kind of scheme that realizes descending semi-static ICIC technology of simulating has been proposed herein in LTE system.
Existing ICIC technology mainly lays particular emphasis on the research of dynamic simulation platform or the realization of existing network product.Its platform or network environment are dynamic, and can realize the information interaction of S1, X2 interface, meet the demand that realizes of semi-static ICIC scheme.But network planning optimization itself is exactly to the abstract of network environment and simulation, as a kind of STATIC SIMULATION scheme, can not simulate the information interaction of X2 interface.Therefore, existing technology can not be applied directly in the network planning.For the agreement of fitting as much as possible, reach desired trade-off effect, the technical scheme that the embodiment of the present invention provides will consider to adopt the thought of semi-static ICIC, the realization of the descending semi-static ICIC of approximate simulation in stationary platforms.Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described.
In enforcement, for ease of understanding, to describe as an example of network planning software LTE eNPS example for the network planning, this software is commercially available, can realize the present invention's (and related invention) embodiment's thereon, from the network planning software of Datang Mobile Communication Apparatus Co., Ltd, but note, although related invention and discussion of the present invention are all about LTE eNPS, but creationary in the technical scheme that the invention process provides, also be applicable to the network planning software of the other types that similar functions is provided with the realization of thought descending semi-static ICIC of approximate simulation in stationary platforms of semi-static ICIC, therefore only quoting of LTE eNPS do not played to restriction as example.
Fig. 1 is the analogy method implementing procedure schematic diagram of ICIC, as shown in the figure, in the time of analog IC IC, can comprise the steps:
Step 101, definite UE and the UE that belongs to edge customer class that belongs to central user class;
Step 102, determine and local area carry out the mutual adjacent area of ICIC;
Step 103, according to RNTP (Relative Narrowband Tx power indicator, Relative Narrowband TX Power instruction) preset value and neighboring BS information determine PRB (physicalresource block, the Physical Resource Block) priority of the each UE that participates in ICIC;
Step 104, carry out after scheduling of resource, power division being controlled according to the priority of PRB;
Step 105, according to scheduling situation, the actual RNTP of local area is set, and informs adjacent area.
The several links that relate to when below this programme realization describe.
1, determining of customer location.
In enforcement, in the time determining the UE that belongs to central user class and belong to the UE of edge customer class, can determine the UE that belongs to central user class and the UE that belongs to edge customer class according to the difference of adjacent area quality and local area quality.
Concrete, so-called customer location, refers to that user attaching is in central user class or edge customer class here.The judgement of customer location is not the unique decision of distance by user and base station, affiliated subdistrict space length.In LTE eNPS, once UE is spread down, UE position will can not change.So, can use the thought of A3 event, judge UEShi center or edge customer.
A3 event description is as follows: meet formula Mn+Ofn+Ocn-Hys > Ms+Ofs+Ocs+Off, when arbitrary adjacent area quality is greater than a threshold value than local area quality, the edge customer that UE is local area, otherwise centered by user.
2, carrying out the mutual adjacent area of ICIC with local area determines.
In enforcement, in the time determining that the mutual adjacent cell of ICIC is carried out in Yu Zhe community, can comprise:
Cover overlapping situation factor according to base station spacing, antenna directional angle, pilot signal, determine basic Neighboring Cell List;
Local area CRS (the Cell-specific reference signals receiving to belong to the UE of edge customer class, the exclusive pilot signal in community) be measuring amount, calculate the Geometry (being Signal to Interference plus Noise Ratio) between UE and each adjacent area that belongs to edge customer class;
Determine adjacent area corresponding to Geometry that this UE is the strongest, variate-value corresponding this adjacent area is added to 1;
Traversal local area belongs to the UE of edge customer class, and all UE that belong to edge customer class of local area are calculated to the Geometry between itself and each adjacent area, and the variate-value of adjacent area corresponding Geometry the strongest this UE is added to 1;
Variate-value to the each adjacent area of local area sorts from high to low, M adjacent area of choice variable value maximum is as carrying out the mutual adjacent area of ICIC with local area, or, set a certain threshold value, front M the adjacent area that variate-value is greater than to threshold value is as carrying out the mutual adjacent area of ICIC with local area.
Concrete, in existing network or LTE eNPS planning software, the position relationship of minizone does not meet theoretic topological structure.Thereby, select which adjacent area as realizing the mutual adjacent area of ICIC with local area, a problem must considering while being planning actually.Can determine descending mutual adjacent area according to CRS.Concrete steps can be as follows:
Utilize base station spacing, antenna directional angle, pilot signal to cover the factors such as overlapping situation, determine basic Neighboring Cell List; Taking edge UE receive local area CRS as measuring amount, the Geometry (being Signal to Interference plus Noise Ratio) between edge calculation UE and each adjacent area; Determine adjacent area corresponding to Geometry that this UE is the strongest, variate-value corresponding this adjacent area is added to 1; Travel through this area edge UE, all edge UE of local area are calculated to the Geometry between itself and each adjacent area, the variate-value of adjacent area corresponding Geometry the strongest this UE is added to 1; Variate-value to the each adjacent area of local area sorts from high to low, and mutual Neighboring Cell List, as carrying out the mutual adjacent area of ICIC with local area, is determined in M the adjacent area (typical value is: M=6) of choice variable value maximum simultaneously.Or set a certain threshold value, be greater than M when being greater than the variate-value of threshold value, get front M for to carry out the mutual adjacent area of ICIC with local area, otherwise have several adjacent areas just to get the mutual adjacent area of several conducts.
3, according to the PRB priority of RNTP preset value and the definite each UE that participates in ICIC of neighboring BS information.
In enforcement, plan to arrange with PRB priority for the local resource in this ICIC to be:
According to a period of time or spectrum efficiency and the data rate requirement of the UE of the each edge customer class in Nei Zhe dispatching cycle community several times, the PRB number that the UE of predicted edge user class uses;
According to PRB number, the adjacent area RNTP mark of prediction and RNTP, priority is set and determines the RNTP preset value on preferential frequency of utilization resource collection and each PRB of UE of edge customer class;
According to adjacent area interference power, adjacent area RNTP, local area RNTP, carry out PRB number and the call number of mutual adjacent area number, local area and adjacent area of ICIC, be 0 and 1 PRB for level of interference, centered by the UE of user class and the UE of edge customer class the priority of PRB is set respectively.
Concrete, all can use all PRB resources for edge customer and central user, can be with indicating (all available) input scheduling module by central user/edge customer resource.
If the preferential frequency of utilization resource collection of edge customer planning is R
edge_dl.
According to the PRB number of prediction, RNTP mark and RNTP, priority is set and determines R
edge_dlset, then by R
edge_dlwith PRB priority, input to scheduling and power control module.Wherein, RNTP is Relative Narrowband TX Power instruction, is used to refer to the downlink transmission power grade on the PRB of this community, and which PRB is notice adjacent cell send with high power, and adjacent cell is avoided these PRB in the time of scheduling edge UE as far as possible; It is relevant with adjacent area level of interference, adjacent area interference power etc. that RNTP arranges priority.
In concrete enforcement, Ke Yishi:
1) determine community RNTP thresholding, can be according to the PRB number of cell type, cell sizes, prediction, the factor setting such as transmitting power, user's environment of living in a period of time.
2) RNTP that determines PRB arranges priority.
Whether the RNTP according to multiple adjacent areas of being apprised of on each PRB, in the RNTP of multiple adjacent areas that judgement is apprised of, exist RNTP to be designated as 1 on this PRB, if existed, the level of interference of this PRB is 1, otherwise is 0; The adjacent area interference power of the PRB that calculating level of interference is 1, and sequence.Interference power is larger, RNTP that priority is set is less; Level of interference is that the RNTP of 0 PRB arranges priority ratio level of interference to be that the RNTP of 1 PRB arranges priority high.
3) RNTP arranges.
Can adopt in two ways: according to the comparison of RNTP threshold value, for local area arranges the value of RNTP, inform and carry out with it the mutual adjacent area of ICIC; Or according to level of interference, RNTP is set, and RNTP is arranged to result informs adjacent cell.The specific practice that RNTP is set according to level of interference is: if the PRB number that level of interference is 0 is greater than N, successively the RNTP of N PRB is masked as to 1 by the resource allocation order of setting, other tick lableses are 0, otherwise, by RNTP, priority is set and successively the RNTP of N PRB is masked as to 1 from high to low, other tick lableses are 0.
4) calculate the priority of each PRB, and input scheduling module.
Through aforesaid way just can be according to adjacent area interference power, adjacent area RNTP, local area RNTP, carry out PRB number and the call number of mutual adjacent area number, local area and adjacent area of ICIC, and the effect priority of various factors under the factors such as different districts environment, be 0 and 1 PRB for level of interference, centered by user and edge customer resource be set respectively use priority, and input to scheduler module by result is set.In enforcement, in principle, the PRB that level of interference is 0 first distributes to edge customer and uses, and while residue in addition, reallocation is used to central user.
4, power adjustment.
In enforcement, when power division control after carrying out scheduling of resource according to the priority of PRB, can different P be set to central user and edge customer
avalue, typical, be the P of edge customer setting
athe P that centered by value is more than or equal to, user arranges
avalue.P
afor the exclusive parameter of UE being configured by high-level signaling, with PDSCH (the Physical Downlink Shared Channel on each OFDM symbol, physical down link sharing channel) EPRE (Energy Per Resource Element, the energy of every Resource Unit) relevant with the EPRE of the exclusive RS in community (reference signals, reference signal).
5, semi-static ICIC adjustment cycle.
Can, after the every renewal scheduling of resource num time, carry out once the adjustment (dispatch num time, do ICIC one time) of semi-static ICIC.Each ICIC adjusts the mark finishing, and local area and its all adjacent areas were all carried out the adjustment of first resource and upgraded.
In enforcement, can obtain system loading information according to system average resource after dispatching for the previous period or several times, load and determine whether with the size of ICIC system loading thresholding the simulation of carrying out ICIC by comparison system.
In enforcement, whether initiating that ICIC adjusts can be that the simulation of ICIC is carried out in one of PRB number, RNTP thresholding of the RNTP that is apprised of at local area, prediction or its combination while changing.
In enforcement, in the time carrying out the simulation of ICIC, can, taking local area as the beginning, adjust successively each adjacent area by the analog form of local area, adjust until all adjacent areas all complete once within this ICIC cycle.
Describe with the example that is embodied as in LTE eNPS planning software below.
Fig. 2 is the ICIC implementing procedure schematic diagram of all communities, as shown in the figure, can comprise the steps:
Step 201, enter " descending semi-static ICIC " and realize interface;
The size of step 202, comparison system load and ICIC system loading thresholding determines whether the semi-static ICIC mode that adopts;
In this step, can obtain system loading information according to system average resource after dispatching for the previous period or several times.Load and the size of ICIC system loading thresholding by comparison system, judge whether semi-static ICIC adopts;
Step 203, determine customer position information, and input scheduling and power control module;
Step 204, determine and local area carry out the mutual Neighboring Cell List of ICIC and priority of adjacent domain;
Step 205, the prediction of PRB number;
In this step, can predict the PRB number that Cell Edge User needs;
Step 206, projected resources, determine that resource can use, input scheduling and power control module;
In this step, can carry out resource can, with arranging, input to scheduling and power control module;
Step 207, preset local area RNTP threshold value;
Step 208, determine that RNTP arranges priority for the PRB of local area;
Step 209, the RNTP that carries out PRB for local area arrange, and the preferential frequency of utilization resource collection that obtains edge customer planning is R
edge_dl, inform adjacent area;
Step 210, arrange PRB use priority, input scheduling and power control module;
Step 211, will dispatch situation input scheduling and power control module, power division will be controlled;
Step 206 to 211 in, RNTP can be set, inform adjacent area.Calculate ICIC PRB priority, and input scheduling.When pad optimization is that can realize combined dispatching time, RNTP set-up mode is converted into the mode of pre-seting.Way now becomes, and according to RNTP preset value and neighboring BS information, calculates ICIC PRB priority, informs scheduling, then according to scheduling situation, the actual RNTP of local area is set, and inform adjacent area;
Step 212, judged whether local area adjacent area ICIC adjust, be to proceed to step 213, otherwise proceed to step 205;
Step 213, judged whether all communities ICIC adjust, be to proceed to step 215, otherwise proceed to step 214;
Step 214, by the adjacent area of local area again as local area, the ICIC for preparing to start the adjacent area of carrying out adjacent area adjusts, and proceeds to step 205;
Descending semi-static ICIC is called in step 215, end.
Step 212 to 214 in, be mainly to determine whether that all communities all complete this ICIC and adjust.Adjust in flow process at this ICIC, have or not Dui Gai community to do adjustment, have and skip, without adjusting.Adjustment thinking is as follows: according to the priority orders in Neighboring Cell List, local area is to the interference of adjacent area order from high to low, and the ICIC that carries out successively adjacent area adjusts.Then, establishing adjacent area is Target cell, adjusts the adjacent area of each adjacent area ... adjusted until all communities all complete once within this ICIC cycle.Also, in the time carrying out the simulation of ICIC, taking local area as the beginning, adjust successively each adjacent area by the analog form of local area, adjusted until all adjacent areas all complete once within this ICIC cycle.
Based on same inventive concept, the analog machine of a kind of ICIC is also provided in the embodiment of the present invention, because the principle that this equipment is dealt with problems is similar to the analogy method of Inter-Cell Interference Coordination, therefore the enforcement of this equipment can be referring to the enforcement of method, repeats part and repeat no more.
Fig. 3 is the analog machine structural representation of ICIC, as shown in the figure, in equipment, can comprise:
User's determination module 301, for determining the UE that belongs to central user class and the UE that belongs to edge customer class;
Adjacent area determination module 302, carries out the mutual adjacent area of ICIC for determining with local area;
Priority determination module 303, for determining the PRB priority of the each UE that participates in ICIC according to RNTP preset value and neighboring BS information;
Scheduling and power control module 304, for carrying out after scheduling of resource, power division being controlled according to the priority of PRB;
Notification module 305, for the actual RNTP of local area is set according to scheduling situation, and informs adjacent area.
In enforcement, priority determination module can comprise:
PRB number determining unit, for according to a period of time or spectrum efficiency and the data rate requirement of the UE of the each edge customer class in Nei Zhe dispatching cycle community several times, the PRB number that the UE of predicted edge user class uses;
Edge customer resource determining unit, determines the RNTP preset value on preferential frequency of utilization resource collection and each PRB of UE of edge customer class for priority is set according to PRB number, the adjacent area RNTP mark of prediction and RNTP;
Priority determining unit, for according to adjacent area interference power, adjacent area RNTP, local area RNTP, carry out PRB number and the call number of mutual adjacent area number, local area and adjacent area of ICIC, be 0 and 1 PRB for level of interference, centered by the UE of user class and the UE of edge customer class the priority of PRB is set respectively.
In enforcement, user's determination module can also be further used for determining the UE that belongs to central user class and the UE that belongs to edge customer class according to the difference of adjacent area quality and local area quality.
In enforcement, adjacent area determination module can comprise:
Basic adjacent area determining unit, for cover overlapping situation factor according to base station spacing, antenna directional angle, pilot signal, determines basic Neighboring Cell List;
Geometry determining unit, the local area CRS receiving for the UE to belong to edge customer class is measuring amount, calculates the Signal to Interference plus Noise Ratio Geometry between UE and each adjacent area that belongs to edge customer class;
Geometry processing unit, for determining the strongest adjacent area corresponding to Geometry of this UE, adds 1 by variate-value corresponding this adjacent area; Traversal local area belongs to the UE of edge customer class, and all UE that belong to edge customer class of local area are calculated to the Geometry between itself and each adjacent area, and the variate-value of adjacent area corresponding Geometry the strongest this UE is added to 1;
Adjacent area determining unit, for the variate-value of the each adjacent area of local area is sorted from high to low, M adjacent area of choice variable value maximum is as carrying out the mutual adjacent area of ICIC with local area, or, set a certain threshold value, front M the adjacent area that variate-value is greater than to threshold value is as carrying out the mutual adjacent area of ICIC with local area.
In enforcement, in equipment, can further include:
ICIC starts module 306, for obtaining system loading information according to system average resource after dispatching for the previous period or several times, is loaded and is determined whether with the size of ICIC system loading thresholding the simulation of carrying out ICIC by comparison system.
In enforcement, in equipment, can further include:
ICIC adjusting module 307, carries out the adjustment of ICIC for one of the PRB number of the RNTP that is apprised of at local area, prediction, RNTP thresholding or its combination while changing.
In enforcement, in equipment, can further include:
ICIC adjusts control module 308, in the time carrying out the simulation of ICIC, taking local area as the beginning, adjusts successively each adjacent area by the analog form of local area, adjusts until all adjacent areas all complete once within this ICIC cycle.
In figure, adjust control module and each community is carried out to the relation between the module collection of ICIC processing in order to show ICIC, taking community as unit identifies out by the module collection that each community is carried out to ICIC processing with dotted line frame, and with the first community .... N cell ID.
For convenience of description, the each several part of the above device is divided into various modules with function or unit is described respectively.Certainly, in the time that enforcement is of the present invention, the function of each module or unit can be realized in same or multiple software or hardware.
As seen from the above-described embodiment, a kind of scheme that realizes descending semi-static ICIC technology of simulating has been proposed in the embodiment of the present invention in planning software.
Concrete, provide customer location to determine mode: to use the thought of A3 event, utilize the difference of adjacent area quality and local area quality, division center/edge customer.
Concrete, provide and local area carries out the mutual adjacent area of ICIC and determines mode: calculate the Geometry between the adjacent area in each edge UE and all Neighboring Cell List, according to the ranking results acquisition to Geometry.
Concrete, providing in the stationary platforms without X2 interface interactive information, simulation realizes descending semi-static ICIC scheme, when pad optimization is, can realize combined dispatching time, RNTP set-up mode to be converted into the mode of pre-seting.And way is become, according to RNTP preset value and neighboring BS information, calculate ICIC PRB priority, inform scheduling, then according to scheduling situation, the actual RNTP of local area is set, and inform adjacent area;
Concrete, provide the mode that sends the simulation of RNTP: have setting to inform;
Concrete, the mode that ICIC adjusts of whether initiating is provided: the RNTP being apprised of, the PRB number of prediction, RNTP thresholding, arbitrary variation is adjusted;
Concrete, the mode that provides community to stagger adjustment: the ICIC time adjustment between adjacent area staggers.First adjust local area, then adjust the adjacent area of local area, then take adjacent area as Target cell, according to Neighboring Cell List priority, adjust successively the adjacent area of adjacent area.。。Until all completing once within this ICIC cycle, all adjacent areas adjusted.
It is a kind of in the static programming emulation platform that cannot simulate X2 interface information interaction that the technical scheme that the embodiment of the present invention provides provides, and simulates and realize the scheme of descending semi-static ICIC technology.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt complete hardware implementation example, completely implement software example or the form in conjunction with the embodiment of software and hardware aspect.And the present invention can adopt the form at one or more upper computer programs of implementing of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) that wherein include computer usable program code.
The present invention is with reference to describing according to flow chart and/or the block diagram of the method for the embodiment of the present invention, equipment (system) and computer program.Should understand can be by the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, the instruction that makes to carry out by the processor of computer or other programmable data processing device produces the device for realizing the function of specifying at flow process of flow chart or multiple flow process and/or square frame of block diagram or multiple square frame.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, the instruction that makes to be stored in this computer-readable memory produces the manufacture that comprises command device, and this command device is realized the function of specifying in flow process of flow chart or multiple flow process and/or square frame of block diagram or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make to carry out sequence of operations step to produce computer implemented processing on computer or other programmable devices, thereby the instruction of carrying out is provided for realizing the step of the function of specifying in flow process of flow chart or multiple flow process and/or square frame of block diagram or multiple square frame on computer or other programmable devices.
Although described the preferred embodiments of the present invention, once those skilled in the art obtain the basic creative concept of cicada, can make other change and amendment to these embodiment.So claims are intended to be interpreted as comprising preferred embodiment and fall into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if these amendments of the present invention and within modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (12)
1. an analogy method of Inter-Cell Interference Coordination ICIC, is characterized in that, comprises the steps:
Determine the user equipment (UE) that belongs to central user class and the UE that belongs to edge customer class;
Determine with local area and carry out the mutual adjacent area of ICIC, wherein, specifically comprise: cover overlapping situation factor according to base station spacing, antenna directional angle, pilot signal, determine basic Neighboring Cell List; To belong to local area cell special reference CRS that the UE of edge customer class receives as measuring amount, calculate the Signal to Interference plus Noise Ratio Geometry belonging between UE and each adjacent area of edge customer class; Determine adjacent area corresponding to Geometry that this UE is the strongest, variate-value corresponding this adjacent area is added to 1; Traversal local area belongs to the UE of edge customer class, and all UE that belong to edge customer class of local area are calculated to the Geometry between itself and each adjacent area, and the variate-value of adjacent area corresponding Geometry the strongest this UE is added to 1; Variate-value to the each adjacent area of local area sorts from high to low, M adjacent area of choice variable value maximum is as carrying out the mutual adjacent area of ICIC with local area, or, set a certain threshold value, front M the adjacent area that variate-value is greater than to threshold value is as carrying out the mutual adjacent area of ICIC with local area;
According to the Physical Resource Block PRB priority of Relative Narrowband TX Power instruction RNTP preset value and the definite each UE that participates in ICIC of neighboring BS information;
Carry out after scheduling of resource, power division being controlled according to the priority of PRB;
According to scheduling situation, the actual RNTP of local area is set, and informs adjacent area.
2. the method for claim 1, is characterized in that, according to the priority of the PRB of RNTP preset value and the definite each UE that participates in ICIC of neighboring BS information, comprising:
According to a period of time or spectrum efficiency and the data rate requirement of the UE of the each edge customer class in Nei Zhe dispatching cycle community several times, the PRB number that the UE of predicted edge user class uses;
According to PRB number, the adjacent area RNTP mark of prediction and RNTP, priority is set and determines the RNTP preset value on preferential frequency of utilization resource collection and each PRB of UE of edge customer class;
According to adjacent area interference power, adjacent area RNTP, local area RNTP, carry out PRB number and the call number of mutual adjacent area number, local area and adjacent area of ICIC, be 0 and 1 PRB for level of interference, centered by the UE of user class and the UE of edge customer class the priority of PRB is set respectively.
3. the method for claim 1, is characterized in that, in the time determining the UE that belongs to central user class and belong to the UE of edge customer class, determines the UE that belongs to central user class and the UE that belongs to edge customer class according to the difference of adjacent area quality and local area quality.
4. the method as described in as arbitrary in claims 1 to 3, it is characterized in that, obtain system loading information according to system average resource after dispatching for the previous period or several times, load and determine whether with the size of ICIC system loading thresholding the simulation of carrying out ICIC by comparison system.
5. the method as described in as arbitrary in claims 1 to 3, is characterized in that, whether initiating that ICIC adjusts is that the adjustment of ICIC is carried out in one of PRB number, RNTP thresholding of the RNTP that is apprised of at local area, prediction or its combination while changing.
6. the method as described in as arbitrary in claims 1 to 3, is characterized in that, in the time carrying out the simulation of ICIC, taking local area as the beginning, adjusts successively each adjacent area by the analog form of local area, adjusts until all adjacent areas all complete once within this ICIC cycle.
7. an analog machine of ICIC, is characterized in that, comprising:
User's determination module, for determining the UE that belongs to central user class and the UE that belongs to edge customer class;
Adjacent area determination module, carry out the mutual adjacent area of ICIC for determining with local area, wherein, adjacent area determination module specifically comprises: basic adjacent area determining unit, for covering overlapping situation factor according to base station spacing, antenna directional angle, pilot signal, determine basic Neighboring Cell List; Geometry determining unit, the local area CRS receiving for the UE to belong to edge customer class is measuring amount, calculates the Signal to Interference plus Noise Ratio Geometry between UE and each adjacent area that belongs to edge customer class; Geometry processing unit, for determining the strongest adjacent area corresponding to Geometry of this UE, adds 1 by variate-value corresponding this adjacent area; Traversal local area belongs to the UE of edge customer class, and all UE that belong to edge customer class of local area are calculated to the Geometry between itself and each adjacent area, and the variate-value of adjacent area corresponding Geometry the strongest this UE is added to 1; Adjacent area determining unit, for the variate-value of the each adjacent area of local area is sorted from high to low, M adjacent area of choice variable value maximum is as carrying out the mutual adjacent area of ICIC with local area, or, set a certain threshold value, front M the adjacent area that variate-value is greater than to threshold value is as carrying out the mutual adjacent area of ICIC with local area;
Priority determination module, for determining the PRB priority of the each UE that participates in ICIC according to RNTP preset value and neighboring BS information;
Scheduling and power control module, for carrying out after scheduling of resource, power division being controlled according to the priority of PRB;
Notification module, for the actual RNTP of local area is set according to scheduling situation, and informs adjacent area.
8. equipment as claimed in claim 7, is characterized in that, priority determination module comprises:
PRB number determining unit, for according to a period of time or spectrum efficiency and the data rate requirement of the UE of the each edge customer class in Nei Zhe dispatching cycle community several times, the PRB number that the UE of predicted edge user class uses;
Edge customer resource determining unit, determines the RNTP preset value on preferential frequency of utilization resource collection and each PRB of UE of edge customer class for priority is set according to PRB number, the adjacent area RNTP mark of prediction and RNTP;
Priority determining unit, for according to adjacent area interference power, adjacent area RNTP, local area RNTP, carry out PRB number and the call number of mutual adjacent area number, local area and adjacent area of ICIC, be 0 and 1 PRB for level of interference, centered by the UE of user class and the UE of edge customer class the priority of PRB is set respectively.
9. equipment as claimed in claim 7, is characterized in that, user's determination module is further used for determining the UE that belongs to central user class and the UE that belongs to edge customer class according to the difference of adjacent area quality and local area quality.
10. the equipment as described in as arbitrary in claim 7 to 9, is characterized in that, further comprises:
ICIC starts module, for obtaining system loading information according to system average resource after dispatching for the previous period or several times, is loaded and is determined whether with the size of ICIC system loading thresholding the simulation of carrying out ICIC by comparison system.
11. equipment as described in as arbitrary in claim 7 to 9, is characterized in that, further comprise:
ICIC adjusting module, carries out the adjustment of ICIC for one of the PRB number of the RNTP that is apprised of at local area, prediction, RNTP thresholding or its combination while changing.
12. equipment as described in as arbitrary in claim 7 to 9, is characterized in that, further comprise:
ICIC adjusts control module, in the time carrying out the simulation of ICIC, taking local area as the beginning, adjusts successively each adjacent area by the analog form of local area, adjusts until all adjacent areas all complete once within this ICIC cycle.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010288652.1A CN102413499B (en) | 2010-09-20 | 2010-09-20 | Simulation method for inter-cell interference coordination, and device therefor |
| PCT/CN2011/079832 WO2012037871A1 (en) | 2010-09-20 | 2011-09-19 | Inter-cell interference coordination simulation method and device therefor |
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| CN201010288652.1A CN102413499B (en) | 2010-09-20 | 2010-09-20 | Simulation method for inter-cell interference coordination, and device therefor |
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| EP2822343B1 (en) | 2012-07-30 | 2018-03-14 | Huawei Technologies Co., Ltd. | Method for coordinating interferences in lte system |
| CN102905301B (en) * | 2012-10-19 | 2015-05-20 | 中兴通讯股份有限公司 | Method and device for simulated loading of neighbor cells in LTE (Long Term Evolution) planning simulation |
| CN105210429B (en) * | 2013-05-10 | 2019-08-06 | 上海诺基亚贝尔股份有限公司 | Signaling methods and device for Inter-Cell Interference Coordination |
| CN103813347B (en) * | 2014-02-28 | 2018-01-26 | 电信科学技术研究院 | A kind of base station frequency resource allocation method and the network equipment |
| CN103906125B (en) * | 2014-03-28 | 2017-11-24 | 京信通信系统（中国）有限公司 | A kind of Relative Narrowband TX Power measuring method and device |
| CN105530692A (en) * | 2014-10-27 | 2016-04-27 | 中兴通讯股份有限公司 | Downlink sending power control method and device |
| CN105916205B (en) * | 2016-06-22 | 2019-04-30 | 中国联合网络通信集团有限公司 | A kind of method and device for distributing resource |
| WO2019061527A1 (en) * | 2017-09-30 | 2019-04-04 | 华为技术有限公司 | Interference processing method, network device and communication device |
| CN114258072B (en) * | 2020-09-25 | 2023-09-19 | 中国移动通信集团山东有限公司 | Interference scene power self-adaptive shrinkage starting method and system |
| US11812456B2 (en) * | 2021-01-26 | 2023-11-07 | Verizon Patent And Licensing Inc. | Interference avoidance based on multiple outer loop link adaptation (OLLA) processes |
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| CN101141777B (en) * | 2007-06-26 | 2010-09-08 | 中兴通讯股份有限公司 | Automatic adjacent section planning method |
| CN101500237B (en) * | 2008-02-02 | 2013-05-01 | 夏普株式会社 | Dynamic interference coordination method and base station |
| CN101651879A (en) * | 2008-08-13 | 2010-02-17 | 华为技术有限公司 | Method, device and system for coordinating interference between cells |
| CN101668304B (en) * | 2008-09-04 | 2012-08-15 | 电信科学技术研究院 | Method and device for measuring and indicating high-interference indicating parameters |
| CN101674680A (en) * | 2008-09-10 | 2010-03-17 | 华为技术有限公司 | Method and device for allocating bands and base station |
| CN101772176B (en) * | 2008-12-30 | 2012-05-02 | 电信科学技术研究院 | Interference coordination method and access network device |
| CN101827383B (en) * | 2009-03-06 | 2013-06-05 | 电信科学技术研究院 | Method and base station for predicting time-frequency resources |
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| CN102413499A (en) | 2012-04-11 |
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