CN102413499A - 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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- CN102413499A CN102413499A CN2010102886521A CN201010288652A CN102413499A CN 102413499 A CN102413499 A CN 102413499A CN 2010102886521 A CN2010102886521 A CN 2010102886521A CN 201010288652 A CN201010288652 A CN 201010288652A CN 102413499 A CN102413499 A CN 102413499A
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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) with UMTS (Universal Mobile Telecommunications System; UMTS) schedule has been put in the research of LTE (Long Term Evolution, the Long Term Evolution) project of technology.For can with the WiMAX that can support the 20MHz bandwidth (World Interoperability for MicrowaveAccess; Whole world inserting of microwave interconnection technique) technology contends with; LTE has selected for use OFDM/FDMA (Orthogonal Frequency Division Multiplex/Frequency Division MultipleAccess, OFDM/frequency division multiple access) technology as its core transmission technology.
How to improve the edge customer throughput, guarantee that edge customer QoS (Quality of Service, service quality) is the problem that the LTE system need consider.Cell Edge User is far away from base station distance; Signal attenuation is bigger; Owing to adopted the OFDM technology, the cell spectrum resource can overlap simultaneously, and this will be to being caused bigger interference by 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, the LTE system has adopted ICIC (Inter-Cell Interference Coordinate, Inter-Cell Interference Coordination) technology to suppress presence of intercell interference, guarantees the LTE systematic function.
From network planning platform, because the difference between LTE and other communication standards, existing many planning platforms can not directly overlap to be used in the 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 X2 interface of required completion when realizing also is the difficult problem that ICIC is achieved in static programming software.Therefore, how with semi-static ICIC scheme, apply to in the network planning software of LTE system, the analogue simulation network condition is a difficult problem needing solution in the prior art badly.
Existing descending semi-static ICIC technology major side overweights the research of dynamic simulation platform or the realization of existing network product.Need to coordinate according to the mutual information of X2 interface.The scheme that adopts in the face of prior art down describes.
The deficiency of prior art is: existing ICIC technology major side overweights 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 realization demand 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 present invention provides a kind of analogy method and equipment of Inter-Cell Interference Coordination, in order to the descending ICIC among the simulation LTE in static environment.
The analogy method of a kind of ICIC is provided in the embodiment of the invention, has comprised the steps:
Confirm to belong to the UE and the UE that belongs to the edge customer class of central user class;
Confirm to carry out the mutual adjacent area of ICIC with local area;
According to RNTP preset value and the definite PRB priority of participating in each UE of ICIC of neighboring BS information;
Carry out after the scheduling of resource power division being controlled according to the priority of PRB;
According to the scheduling situation the actual RNTP of local area is set, and informs the adjacent area.
The analog machine of a kind of ICIC is provided in the embodiment of the invention, has comprised:
User's determination module is used to the UE that confirms to belong to the UE of central user class and belong to the edge customer class;
The adjacent area determination module is used for confirming to carry out the mutual adjacent area of ICIC with local area;
The priority determination module is used for the PRB priority according to each UE of RNTP preset value and the definite ICIC of participation of neighboring BS information;
Scheduling and power control module are used for carrying out after the scheduling of resource power division being controlled according to the priority of PRB;
Notification module is used for according to the scheduling situation the actual RNTP of local area being set, and informs the adjacent area.
Beneficial effect of the present invention is following:
The present invention is in implementation process, at first according to RNTP preset value and the definite PRB priority of participating in each UE of ICIC of neighboring BS information; Carry out after the scheduling of resource power division being controlled according to the priority of PRB at local area then; The actual RNTP of local area is being set according to the scheduling situation, and is informing the adjacent area.In this process; The actual resource that adopts all can be confirmed according to the situation and its other resources situation of adjacent area in each sub-district; And each adjacent area is provided with the resource situation of self actual use; Supply each adjacent area to carry out the resource setting, though, also realized the ICIC process of individual minizone not from the information of X2 interface; Therefore descending semi-static ICIC technology simulated and realized to the technical scheme that also makes the embodiment of the invention provide can in can't simulating the static programming emulation platform of X2 interface information interaction.
The technical scheme that the embodiment of the invention provides can be in static environment (or condition of various no interface messages) analog IC IC; Simulation real network situation makes up model; Through to the parameter adjustment under the different scenes; Seek the preferred plan that ICIC realizes, for the scheme selection of ICIC in reality realizes with the ICIC relevant parameter setting provide can be with reference to foundation; Confirm simultaneously in real network, to consider the later each item network planning parameter of semi-static ICIC, like descending transmitting power or the like.
Description of drawings
Fig. 1 is the analogy method implementing procedure sketch map of ICIC in the embodiment of the invention;
Fig. 2 is the ICIC implementing procedure sketch map of all sub-districts in the embodiment of the invention;
Fig. 3 is the analog machine structural representation of ICIC in the embodiment of the invention.
Embodiment
3GPP LTE system descending channel has adopted OFDM (OFDM) technology as its transmission technology.When LTE adopts the OFDM technology to be the plot planning frequency resource, utilize sub-carrier orthogonality, evade the interference between each user in the sub-district.Therefore, presence of intercell interference will become the main interference source between the user in the LTE system.In order to guarantee the transmission performance of excellent communications quality, particularly Cell Edge User, the LTE system has introduced a key technology: Inter-Cell Interference Coordination (ICIC) technology.
The realization effect of ICIC in LTE planning will directly influence network planning performance.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 demanding urgently filling up in the network planning optimization work.Given this, this paper has proposed a kind of scheme that realizes descending semi-static ICIC technology of in the LTE system, simulating.
Existing ICIC technology major side overweights 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 realization demand of semi-static ICIC scheme.Yet 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 invention provides will consider to adopt the thought of semi-static ICIC, the realization of the descending semi-static ICIC of approximate simulation on stationary platforms.Describe below in conjunction with the accompanying drawing specific embodiments of the invention.
In the enforcement; For ease of understanding; For the network planning will be that example describes with network planning software LTE eNPS; This software be commercially available, can realize the present invention's (and related invention) embodiment above that, from the network planning software of Datang Mobile Communication Apparatus Co., Ltd; Yet note; Although it is related invention and discussion of the present invention be all about LTE eNPS, creationary in the technical scheme that the present invention implements to provide, also be applicable to the realization of thought descending semi-static ICIC of approximate simulation on stationary platforms of semi-static ICIC and the network planning software of the other types that similar functions is provided therefore quoting of LTE eNPS only played restriction as an example and not.
Fig. 1 is the analogy method implementing procedure sketch map of ICIC, and is as shown in the figure, when analog IC IC, can comprise the steps:
Step 103, according to RNTP (Relative Narrowband Tx power indicator; The Relative Narrowband TX Power indication) preset value and neighboring BS information are confirmed PRB (physicalresource block, the Physical Resource Block) priority of each UE of participation ICIC;
The several links that relates to when realizing in the face of this programme down describes.
1, customer location confirms.
In the enforcement, when confirming to belong to the UE of central user class and belonging to the UE of edge customer class, can confirm to belong to the UE and the UE that belongs to the edge customer class of central user class according to the difference of adjacent area quality and local area quality.
Concrete, so-called customer location refers to that here user attaching still is the edge customer class in the central user class.The judgement of customer location is not the far and near unique decision by user and affiliated subdistrict base station space length.Because among the LTE eNPS, UE is in case quilt is spread down, the UE position will can not change.So, can use the thought of A3 incident, judge that UE is center or edge customer.
The A3 event description is following: satisfy formula Mn+Ofn+Ocn-Hys＞Ms+Ofs+Ocs+Off, during greater than a threshold value, UE is the edge customer of local area to promptly arbitrary adjacent area quality, otherwise is central user than local area quality.
2, carrying out the mutual adjacent area of ICIC with local area confirms.
In the enforcement, when confirming to carry out the mutual adjacent sub-district of ICIC, can comprise with this sub-district:
Cover overlapping situation factor according to base station spacing, antenna directional angle, pilot signal, confirm basic Neighboring Cell List;
The local area CRS (Cell-specific reference signals, the exclusive pilot signal in sub-district) that receives with the UE that belongs to the edge customer class is a measuring amount, calculates the UE and the Geometry between each adjacent area (being Signal to Interference plus Noise Ratio) that belong to the edge customer class;
Confirm the corresponding adjacent area of the strongest Geometry of this UE, the variate-value that this adjacent area is corresponding adds 1;
The traversal local area belongs to the UE of edge customer class, and all UE that belong to the edge customer class calculate the Geometry between its and each adjacent area to local area, and the variate-value of the adjacent area of the Geometry correspondence that this UE is the strongest adds 1;
Variate-value to each adjacent area of local area sorts from high to low; M maximum adjacent area conduct of choice variable value carried out the mutual adjacent area of ICIC with local area; Perhaps, set a certain threshold value, with variate-value greater than preceding M adjacent area of threshold value as carrying out the mutual adjacent area of ICIC with local area.
Concrete, in existing network or LTE eNPS planning software, the position of minizone relation does not satisfy theoretic topological structure.Thereby, select which adjacent area conduct and local area to realize the mutual adjacent area of ICIC, a problem must considering when being planning actually.Can confirm descending mutual adjacent area according to CRS.Concrete steps then can be following:
Utilize base station spacing, antenna directional angle, pilot signal to cover factors such as overlapping situation, confirm basic Neighboring Cell List; The local area CRS that receives with edge UE is a measuring amount, the Geometry between edge calculation UE and each adjacent area (being Signal to Interference plus Noise Ratio); Confirm the corresponding adjacent area of the strongest Geometry of this UE, the variate-value that this adjacent area is corresponding adds 1; Travel through this area edge UE, to the Geometry between all edge UE calculating itself and each adjacent areas of local area, the variate-value of the adjacent area that the Geometry that this UE is the strongest is corresponding adds 1; Variate-value to each adjacent area of local area sorts from high to low, and (typical value is: M=6) conduct is carried out the mutual adjacent area of ICIC with local area, confirms mutual Neighboring Cell List simultaneously in M maximum adjacent area of choice variable value.Perhaps set a certain threshold value, individual greater than M when the variate-value greater than threshold value, M is individual for to carry out the mutual adjacent area of ICIC with local area before then getting, otherwise has several adjacent areas just to get the mutual adjacent area of several conducts.
3, according to RNTP preset value and the definite PRB priority of participating in each UE of ICIC of neighboring BS information.
In the enforcement, be provided with for the local resource among this ICIC planning and PRB priority and can be:
According to spectrum efficiency and the data rate requirement of the UE of each edge customer class of this sub-district in a period of time or dispatching cycle several times, the PRB number that the UE of predicted edge user class uses;
According to PRB number, the adjacent area RNTP sign of prediction and RNTP preferential frequency of utilization resource collection and the RNTP preset value on each PRB that priority is confirmed the UE of edge customer class is set;
According to adjacent area interference power, adjacent area RNTP, local area RNTP, carry out the PRB number and the call number of mutual adjacent area number, local area and adjacent area of ICIC; To level of interference is 0 and 1 PRB, and the priority of PRB is set respectively for the UE of the UE of central user class and edge customer class.
Concrete, all can use all PRB resources for edge customer and central user, central user/edge customer resource can be used indication (all available) input scheduling module.
If the preferential frequency of utilization resource collection of edge customer planning is R
Edge_dl
According to the PRB number of predicting, RNTP sign and RNTP priority is set and confirms R
Edge_dlSet is then with R
Edge_dlWith PRB priority, input to scheduling and power control module.Wherein, RNTP is the Relative Narrowband TX Power indication, is used for indicating the downlink transmission power grade on the PRB of this sub-district, notifies which PRB of adjacent sub-district to send with high power, and these PRB are avoided in adjacent sub-district as far as possible when scheduling edge UE; It is relevant with adjacent area level of interference, adjacent area interference power etc. that RNTP is provided with priority.
In the practical implementation, can be:
1) confirm sub-district RNTP thresholding, can be according to the PRB number of cell type, cell sizes, prediction, factor setting such as transmitting power, user's environment of living in a period of time.
2) RNTP that confirms PRB is provided with priority.
According to the RNTP of a plurality of adjacent areas on each PRB that is apprised of, judge among the RNTP of a plurality of adjacent areas of being apprised of whether exist RNTP on this PRB, to be designated as 1, if exist, the level of interference of this PRB is 1, otherwise is 0; Calculate level of interference and be the adjacent area interference power of 1 PRB, and ordering.Interference power is big more, RNTP that priority is set is more little; Level of interference is that the priority ratio level of interference is set is that the RNTP of 1 PRB is provided with the priority height to the RNTP of 0 PRB.
3) RNTP is provided with.
Can adopt dual mode: according to the comparison of RNTP threshold value, for local area is provided with the value of RNTP, inform and carry out the mutual adjacent area of ICIC with it; Or RNTP is set, and RNTP is provided with the result informs adjacent sub-district according to level of interference.The specific practice that RNTP is set according to level of interference is: some grades of disturbing are that 0 PRB number is greater than N; Resource allocation order by setting is masked as 1 with the RNTP of N PRB successively; Other tick lableses are 0; Otherwise, by RNTP priority being set and successively the RNTP of N PRB being masked as 1 from high to low, other tick lableses are 0.
4) calculate the priority of each PRB, and the input scheduling module.
Through aforesaid way just can be according to adjacent area interference power, adjacent area RNTP, local area RNTP, carry out the 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 factors such as different districts environment; To level of interference 0 and 1 PRB; Use priority for central user and edge customer are provided with resource respectively, and the result will be set input to scheduler module.In the enforcement, in principle, level of interference is that 0 PRB distributes to edge customer earlier and uses, and when remaining in addition, reallocation is used to central user.
4, power adjustment.
In the enforcement, when after carrying out scheduling of resource, power division being controlled, can different P be set to central user and edge customer according to the priority of PRB
AValue, typical, be the P of edge customer setting
AValue is more than or equal to the P that is provided with for central user
AValue.P
ABe the exclusive parameter of UE by the high-level signaling configuration; 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 sub-district (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 (promptly dispatch num time, do ICIC one time) of semi-static ICIC.The sign that each ICIC adjustment finishes is that local area upgrades with the adjustment that first resource was all carried out in its all adjacent areas.
In the enforcement, can obtain system loading information, judge whether carry out the simulation of ICIC through the size of comparison system load and ICIC system loading thresholding according to dispatching back system average resource for the previous period or several times.
In the enforcement, when changing, one of the RNTP that whether initiates ICIC adjustment and can be to be apprised of at local area, the PRB number of prediction, RNTP thresholding or its combination carry out the simulation of ICIC.
In the enforcement, when carrying out the simulation of ICIC, can be the beginning with the local area, adjust each adjacent area successively, all accomplish once adjustment in the cycle at this ICIC until all adjacent areas by the analog form of local area.
Describe with the example that is embodied as in LTE eNPS planning software below.
Fig. 2 is the ICIC implementing procedure sketch map of all sub-districts, and is as shown in the figure, can comprise the steps:
The size of step 202, comparison system load and ICIC system loading thresholding judges whether adopt semi-static ICIC mode;
In this step, can obtain system loading information according to dispatching back system average resource for the previous period or several times.Through the size of comparison system load and ICIC system loading thresholding, judge whether semi-static ICIC adopts;
In this step, can predict the PRB number that Cell Edge User needs;
In this step, can carry out resource and can use setting, input to scheduling and power control module;
Step 206 to 211 in, RNTP can be set, inform the adjacent area.Calculate ICIC PRB priority, and input scheduling.When pad optimization is that the RNTP set-up mode is converted into the mode of pre-seting in the time of can realizing combined dispatching.The way of this moment becomes, and according to RNTP preset value and neighboring BS information, calculates ICIC PRB priority, informs scheduling, according to the scheduling situation the actual RNTP of local area is set again, and informs the adjacent area;
Descending semi-static ICIC is called in step 215, end.
Step 212 to 214 in, mainly be to judge that whether this ICIC adjustment is all accomplished in all sub-districts.In this ICIC adjustment flow process, there is unmatchful this sub-district to do adjustment, have then and skip, there is not then adjustment.The adjustment thinking is following: according to the priority orders in the Neighboring Cell List, promptly local area carries out the ICIC adjustment of adjacent area successively to the interference order from high to low of adjacent area.Then, establishing the adjacent area is Target cell, adjusts the adjacent area of each adjacent area ... all accomplished once adjustment in the cycle at this ICIC until all sub-districts.Also promptly, when carrying out the simulation of ICIC, be the beginning with the local area, adjust each adjacent area successively by the analog form of local area, all accomplished once adjustment in the cycle until all adjacent areas at this ICIC.
Based on same inventive concept; The analog machine of a kind of ICIC also is provided in the embodiment of the invention; Because the principle that this equipment is dealt with problems is similar with the analogy method of Inter-Cell Interference Coordination, so the enforcement of this equipment can repeat part and repeat no more referring to the enforcement of method.
Fig. 3 is the analog machine structural representation of ICIC, and is as shown in the figure, can comprise in the equipment:
User's determination module 301 is used to the UE that confirms to belong to the UE of central user class and belong to the edge customer class;
Adjacent area determination module 302 is used for confirming to carry out the mutual adjacent area of ICIC with local area;
Scheduling and power control module 304 are used for carrying out after the scheduling of resource power division being controlled according to the priority of PRB;
In the enforcement, the priority determination module can comprise:
The PRB number is confirmed the unit, is used for spectrum efficiency and data rate requirement according to the UE of each edge customer class of this sub-district in a period of time or dispatching cycle several times, the PRB number that the UE of predicted edge user class uses;
The edge customer resource is confirmed the unit, is used for according to PRB number, the adjacent area RNTP sign of prediction and RNTP preferential frequency of utilization resource collection and the RNTP preset value on each PRB that priority is confirmed the UE of edge customer class being set;
Priority determining unit; Be used for according to adjacent area interference power, adjacent area RNTP, local area RNTP, carry out the PRB number and the call number of mutual adjacent area number, local area and adjacent area of ICIC; To level of interference is 0 and 1 PRB, and the priority of PRB is set respectively for the UE of the UE of central user class and edge customer class.
In the enforcement, user's determination module can also be further used for confirming to belong to according to the difference of adjacent area quality and local area quality the UE and the UE that belongs to the edge customer class of central user class.
In the enforcement, the adjacent area determination module can comprise:
The unit is confirmed in basic adjacent area, is used for covering overlapping situation factor according to base station spacing, antenna directional angle, pilot signal, confirms basic Neighboring Cell List;
Geometry confirms the unit, and the local area CRS that is used for receiving with the UE that belongs to the edge customer class is a measuring amount, calculates to belong to the UE of edge customer class and the Signal to Interference plus Noise Ratio Geometry between each adjacent area;
The Geometry processing unit is used for confirming the corresponding adjacent area of the strongest Geometry of this UE, and the variate-value that this adjacent area is corresponding adds 1; The traversal local area belongs to the UE of edge customer class, and all UE that belong to the edge customer class calculate the Geometry between its and each adjacent area to local area, and the variate-value of the adjacent area of the Geometry correspondence that this UE is the strongest adds 1;
The unit is confirmed in the adjacent area; Be used for the variate-value of each adjacent area of local area is sorted from high to low; M maximum adjacent area conduct of choice variable value carried out the mutual adjacent area of ICIC with local area; Perhaps, set a certain threshold value, with variate-value greater than preceding M adjacent area of threshold value as carrying out the mutual adjacent area of ICIC with local area.
In the enforcement, can further include in the equipment:
ICIC starts module 306, is used for obtaining system loading information according to dispatching back system average resource for the previous period or several times, judges whether carry out the simulation of ICIC through the size of comparison system load and ICIC system loading thresholding.
In the enforcement, can further include in the equipment:
In the enforcement, can further include in the equipment:
ICIC adjusts control module 308, is used for when carrying out the simulation of ICIC, and with the local area beginning, adjust each adjacent area successively by the analog form of local area, all accomplished once adjustment in the cycle until all adjacent areas at this ICIC.
Among the figure in order to show the relation between ICIC adjustment control module and the module collection that each sub-district is carried out the ICIC processing; Be that unit with dashed lines frame will carry out the module collection that ICIC handles to each sub-district and identify out with the sub-district, and with first sub-district .... the N cell ID.
For the convenience of describing, the each several part of the above device is divided into various modules with function or the unit is described respectively.Certainly, when embodiment of the present invention, can in same or a plurality of softwares or hardware, realize the function of each module or unit.
Visible by the foregoing description, a kind of scheme that realizes descending semi-static ICIC technology of in planning software, simulating has been proposed in the embodiment of the invention.
Concrete, provide customer location to confirm mode: to use the thought of A3 incident, promptly 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 confirms mode: calculate the Geometry between the adjacent area in each edge UE and all Neighboring Cell List, according to ranking results acquisition to Geometry.
Concrete, providing in the stationary platforms of no X2 interface interactive information, simulation realizes descending semi-static ICIC scheme, when pad optimization is in the time of can realizing combined dispatching, the RNTP set-up mode to be converted into the mode of pre-seting.And way is become,, calculate ICIC PRB priority, inform scheduling, according to the scheduling situation the actual RNTP of local area is set again, and informs the adjacent area according to RNTP preset value and neighboring BS information;
Concrete, the simulated mode of sending RNTP is provided: have setting promptly to inform;
Concrete, the mode of whether initiating the ICIC adjustment is provided: the PRB number of the RNTP that is apprised of, prediction, RNTP thresholding, arbitrary variation is promptly adjusted;
Concrete, the mode that provides the sub-district to stagger adjustment: the ICIC adjustment between the adjacent area is staggered constantly.Adjusting local area earlier, adjust the adjacent area of local area again, is Target cell with the adjacent area again, according to Neighboring Cell List priority, adjusts the adjacent area of adjacent area successively.。。All accomplished once adjustment in the cycle until all adjacent areas at this ICIC.
It is a kind of in can't simulating the static programming emulation platform of X2 interface information interaction that the technical scheme that the embodiment of the invention provides provides, and simulates and realize the scheme of descending semi-static ICIC technology.
Those skilled in the art should understand that embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt the form of the embodiment of complete hardware embodiment, complete software implementation example or combination software and hardware aspect.And the present invention can be employed in the form that one or more computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) that wherein include computer usable program code go up the computer program of implementing.
The present invention is that reference is described according to the flow chart and/or the block diagram of method, equipment (system) and the computer program of the embodiment of the invention.Should understand can be by the flow process in each flow process in computer program instructions realization flow figure and/or the block diagram and/or square frame and flow chart and/or the 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, make the instruction of carrying out through the processor of computer or other programmable data processing device produce to be used for the device of the function that is implemented in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame appointments.
These computer program instructions also can be stored in ability vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work; Make the instruction that is stored in this computer-readable memory produce the manufacture that comprises command device, this command device is implemented in the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
These computer program instructions also can be loaded on computer or other programmable data processing device; Make on computer or other programmable devices and to carry out the sequence of operations step producing computer implemented processing, thereby the instruction of on computer or other programmable devices, carrying out is provided for being implemented in the step of the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
Although described the preferred embodiments of the present invention, in a single day those skilled in the art get the basic inventive concept could of cicada, then can make other change and modification to these embodiment.So accompanying claims is intended to be interpreted as all changes and the modification that comprises preferred embodiment and fall into the scope of the invention.
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, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.
Claims (14)
1. the analogy method of an Inter-Cell Interference Coordination ICIC is characterized in that, comprises the steps:
Confirm to belong to the user equipment (UE) and the UE that belongs to the edge customer class of central user class;
Confirm to carry out the mutual adjacent area of ICIC with local area;
According to Relative Narrowband TX Power indication RNTP preset value and the definite Physical Resource Block PRB priority of participating in each UE of ICIC of neighboring BS information;
Carry out after the scheduling of resource power division being controlled according to the priority of PRB;
According to the scheduling situation the actual RNTP of local area is set, and informs the adjacent area.
2. the method for claim 1 is characterized in that, confirms to participate in the priority of PRB of each UE of ICIC according to RNTP preset value and neighboring BS information, comprising:
According to spectrum efficiency and the data rate requirement of the UE of each edge customer class of this sub-district in a period of time or dispatching cycle several times, the PRB number that the UE of predicted edge user class uses;
According to PRB number, the adjacent area RNTP sign of prediction and RNTP preferential frequency of utilization resource collection and the RNTP preset value on each PRB that priority is confirmed the UE of edge customer class is set;
According to adjacent area interference power, adjacent area RNTP, local area RNTP, carry out the PRB number and the call number of mutual adjacent area number, local area and adjacent area of ICIC; To level of interference is 0 and 1 PRB, and the priority of PRB is set respectively for the UE of the UE of central user class and edge customer class.
3. the method for claim 1 is characterized in that, when confirming to belong to the UE of central user class and belonging to the UE of edge customer class, confirms to belong to the UE and the UE that belongs to the edge customer class of central user class according to the difference of adjacent area quality and local area quality.
4. the method for claim 1 is characterized in that, when confirming to carry out the mutual adjacent sub-district of ICIC with this sub-district, comprising:
Cover overlapping situation factor according to base station spacing, antenna directional angle, pilot signal, confirm basic Neighboring Cell List;
The local area cell special reference CRS that receives with the UE that belongs to the edge customer class is a measuring amount, calculates to belong to the UE of edge customer class and the Signal to Interference plus Noise Ratio Geometry between each adjacent area;
Confirm the corresponding adjacent area of the strongest Geometry of this UE, the variate-value that this adjacent area is corresponding adds 1;
The traversal local area belongs to the UE of edge customer class, and all UE that belong to the edge customer class calculate the Geometry between its and each adjacent area to local area, and the variate-value of the adjacent area of the Geometry correspondence that this UE is the strongest adds 1;
Variate-value to each adjacent area of local area sorts from high to low; M maximum adjacent area conduct of choice variable value carried out the mutual adjacent area of ICIC with local area; Perhaps, set a certain threshold value, with variate-value greater than preceding M adjacent area of threshold value as carrying out the mutual adjacent area of ICIC with local area.
5. like the arbitrary described method of claim 1 to 4; It is characterized in that; Obtain system loading information according to dispatching back system average resource for the previous period or several times, judge whether carry out the simulation of ICIC through the size of comparison system load and ICIC system loading thresholding.
6. like the arbitrary described method of claim 1 to 5, it is characterized in that, carry out the adjustment of ICIC when one of the RNTP that whether initiates ICIC adjustment and be to be apprised of at local area, the PRB number of prediction, RNTP thresholding or its combination change.
7. like the arbitrary described method of claim 1 to 6, it is characterized in that, when carrying out the simulation of ICIC, is the beginning with the local area, adjusts each adjacent area successively by the analog form of local area, all accomplishes once adjustment in the cycle at this ICIC until all adjacent areas.
8. the analog machine of an ICIC is characterized in that, comprising:
User's determination module is used to the UE that confirms to belong to the UE of central user class and belong to the edge customer class;
The adjacent area determination module is used for confirming to carry out the mutual adjacent area of ICIC with local area;
The priority determination module is used for the PRB priority according to each UE of RNTP preset value and the definite ICIC of participation of neighboring BS information;
Scheduling and power control module are used for carrying out after the scheduling of resource power division being controlled according to the priority of PRB;
Notification module is used for according to the scheduling situation the actual RNTP of local area being set, and informs the adjacent area.
9. equipment as claimed in claim 8 is characterized in that, the priority determination module comprises:
The PRB number is confirmed the unit, is used for spectrum efficiency and data rate requirement according to the UE of each edge customer class of this sub-district in a period of time or dispatching cycle several times, the PRB number that the UE of predicted edge user class uses;
The edge customer resource is confirmed the unit, is used for according to PRB number, the adjacent area RNTP sign of prediction and RNTP preferential frequency of utilization resource collection and the RNTP preset value on each PRB that priority is confirmed the UE of edge customer class being set;
Priority determining unit; Be used for according to adjacent area interference power, adjacent area RNTP, local area RNTP, carry out the PRB number and the call number of mutual adjacent area number, local area and adjacent area of ICIC; To level of interference is 0 and 1 PRB, and the priority of PRB is set respectively for the UE of the UE of central user class and edge customer class.
10. equipment as claimed in claim 8 is characterized in that, user's determination module is further used for confirming to belong to according to the difference of adjacent area quality and local area quality the UE and the UE that belongs to the edge customer class of central user class.
11. equipment as claimed in claim 8 is characterized in that, the adjacent area determination module comprises:
The unit is confirmed in basic adjacent area, is used for covering overlapping situation factor according to base station spacing, antenna directional angle, pilot signal, confirms basic Neighboring Cell List;
Geometry confirms the unit, and the local area CRS that is used for receiving with the UE that belongs to the edge customer class is a measuring amount, calculates to belong to the UE of edge customer class and the Signal to Interference plus Noise Ratio Geometry between each adjacent area;
The Geometry processing unit is used for confirming the corresponding adjacent area of the strongest Geometry of this UE, and the variate-value that this adjacent area is corresponding adds 1; The traversal local area belongs to the UE of edge customer class, and all UE that belong to the edge customer class calculate the Geometry between its and each adjacent area to local area, and the variate-value of the adjacent area of the Geometry correspondence that this UE is the strongest adds 1;
The unit is confirmed in the adjacent area; Be used for the variate-value of each adjacent area of local area is sorted from high to low; M maximum adjacent area conduct of choice variable value carried out the mutual adjacent area of ICIC with local area; Perhaps, set a certain threshold value, with variate-value greater than preceding M adjacent area of threshold value as carrying out the mutual adjacent area of ICIC with local area.
12. like the arbitrary described equipment of claim 8 to 11, it is characterized in that, further comprise:
ICIC starts module, is used for obtaining system loading information according to dispatching back system average resource for the previous period or several times, judges whether carry out the simulation of ICIC through the size of comparison system load and ICIC system loading thresholding.
13. like the arbitrary described equipment of claim 8 to 12, it is characterized in that, further comprise:
The ICIC adjusting module carries out the adjustment of ICIC when one of the RNTP that is used for being apprised of at local area, the PRB number of prediction, RNTP thresholding or its combination change.
14. like the arbitrary described equipment of claim 8 to 13, it is characterized in that, further comprise:
ICIC adjusts control module, is used for when carrying out the simulation of ICIC, and with the local area beginning, adjust each adjacent area successively by the analog form of local area, all accomplished once adjustment in the cycle until all adjacent areas at this ICIC.
Priority Applications (2)
| 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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| 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 |
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| CN102413499A true CN102413499A (en) | 2012-04-11 |
| CN102413499B CN102413499B (en) | 2014-09-10 |
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| WO2012037871A1 (en) | 2012-03-29 |
| CN102413499B (en) | 2014-09-10 |
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