CN101778415B - System and method for constructing multiple base stations and multiple user simulating scenes - Google Patents
System and method for constructing multiple base stations and multiple user simulating scenes Download PDFInfo
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Abstract
The invention provides a system for constructing multiple base stations and multiple user simulating scenes, which comprises a base station entity maintaining module for maintaining base station entities, a user entity maintaining module for maintaining user entities, a scene initializing module for initializing scenes, a scene refreshing module for refreshing scenes, a link sampling module for sampling link data, and a physical channel module for providing multiple types of physical channel response, wherein the base station entity maintaining module and the user entity maintaining module create the base station entities and the user entities with the preset number according to the configuring information of the scenes. After a certain time cycle, the scene refreshing module is used for refreshing the information in the base station entities and the user entities according to the real-time change of the user entity positions. The link sampling module is used for collecting the link information of the effective link, and the physical channel module is used for generating the instant channel response of each effective link.
Description
Technical field
The present invention relates to wireless communication technology field, particularly the constructing system of multiple base stations and multiple user simulating scenes and method.
Background technology
Emulation is meant the process through setting up the real system model and utilizing institute's established model that real system is experimentized and studies.Emulation is in technical fields such as electric, mechanical, chemical industry, waterpower, heating power, and all is widely used in the social field such as society, economy, ecology, management.Wireless communication system architecture is complicated, involve great expense, and the public's social life is had a far reaching influence, and therefore, emulation technology also is widely used in wireless communication field.
The simulating scenes of multi-BS (base station) multi-user is the simulating scenes of crucial a kind of system level in the wireless communication field simulation process.So-called many base stations, multi-user are meant in this simulating scenes; A plurality of base stations and a plurality of user have been made up; Thereby phenomenons such as the inter-user interference in can the simulating reality scene and collaborative, inter base station interference and collaborative, channel large scale decline, for switch between the wireless resource scheduling of system level, base station, simulation operations such as work in coordination with the base station, broadcast multi-broadcasting provide support.
The correlation technique and the system that have had the simulating scenes that is used to make up multi-BS (base station) multi-user in the prior art; But these method and systems often need to specific emulation; Only can embody a kind of of constructed scene or a few characteristic, lack versatility and autgmentability different emulation demands.For example, in list of references 1 " by of heap of stone, Wang Yifan; Zhang Yong, Mao Anfeng, Cai Jie; Song Junde is based on the functional mode and the 25th the 8th phase of volume of emulation arithmetic computer application study of the IEEE 802.16Mesh pattern of NS2 "; 802.16 protocol modules that provide among the open source software NS2, and in the list of references 2 " pretty imperial WCDMA station layout of woods and network simulation research Shanghai Communications University 20070101 ", what the UMTS module that provides among the business software OPNET was directed against all is certain protocol; These methods can not be provided with and support the various protocols characteristic, and in use also can relate to complicated data setting and a large amount of understanding work.
Summary of the invention
The objective of the invention is to overcome prior art and only can embody a kind of of constructed scene or a few characteristic, lack the versatility of different emulation demands and the defective of autgmentability, thereby a kind of simulating scenes constructing system and method with versatility is provided.
To achieve these goals; The invention provides a kind of constructing system of multiple base stations and multiple user simulating scenes, comprise the base station entity maintenance module, the user subject maintenance module that is used for maintenance customer's entity that are used for the base station maintenance entity, be used for to scene do initialization operation scene initialization module, the scene update module that is used for scene is upgraded, the link sampling module of link data and the physical channel module that is used to provide the response of polymorphic type physical channel are used to sample; Wherein,
Described base station entity maintenance module and user subject maintenance module are created base station entity and the user subject that specifies number according to the configuration information of scene; Described scene initialization module is according to the said base station entity of configuration information initialization of scene and the information in the user subject; Random initializtion comprises the content of user subject movement velocity, the direction of motion, position, and the relation between said base station entity and user subject is carried out initialization; Described scene update module is upgraded the information in said base station entity and the user subject at week regular hour after date according to the real-time change of user subject position; Described link sampling module is gathered the link information of active link, and generates the instant channel response of each active link by the physical channel module.
In the technique scheme, include and base-station-related information in the described base station entity, comprise physical message and function information; Wherein, described physical message comprises sector auxiliary information, service-user index information, coverage, base station position information; Described function information comprises base station frequency resource information, load information, antenna for base station configuration information, base station transmitting power information, base station indices.
In the technique scheme; Described user subject includes and subscriber-related information, comprises that user index information, user monitor base station indices information, serving BS information, customer position information, user's motion track information, user load information, user antenna configuration information.
The present invention also provides a kind of construction method of multiple base stations and multiple user simulating scenes, comprising:
Step 1), according to make up the content configuration information of scene;
Step 2), create the base station entity that specifies number;
The user subject that step 3), establishment specify number;
Step 4), according to the information in step 1) said base station entity of resulting configuration information initialization and the user subject; Random initializtion comprises the content of user subject movement velocity, the direction of motion, position, and the relation between said base station entity and user subject is carried out initialization.
In the technique scheme, also comprise the scene update step, comprising:
Step 5), judge whether current time has arrived the update cycle, after arriving the update cycle, upgrade the information in said base station entity and the user subject, carry out next step then according to the real-time change of user subject position; Otherwise, directly carry out next step;
Step 6), gather the link information of active link between each user subject and base station, generate the instant channel response of each active link.
In the technique scheme; In described step 1), described configuration information comprises base station and user's number, the position at place, base station, the coverage of base station, user's number of antennas, the physical message in each base station and function information, user load information, the user antenna configuration information among each user.
In the technique scheme; In described step 4), comprise: the sector auxiliary information in the base station entity, coverage, base station position information, base station frequency resource information, antenna for base station configuration information, base station transmitting power information, base station indices are carried out initialization according to the information in the said base station entity of configuration information initialization.
In the technique scheme, in described step 4), comprise: the user load information in the user subject, user antenna configuration information are given initialization according to the information in the said user subject of configuration information initialization.
In the technique scheme; In described step 4); Relation between said base station entity and user subject is carried out initialization to be comprised: according to the monitoring base station indices information and the serving BS information of the initial position initialization user subject of user subject, and according to the base station load information and service user index information of said monitoring base station indices information with service base station information initialization respective base station entity.
In the technique scheme, described step 5) comprises:
Step 5-1), calculate the current location of a user subject in the scene;
Step 5-2), upgrade the customer position information in the user subject and monitor base station indices information according to the current location of user subject;
Step 5-3), whether the serving BS at judges entity place variation has taken place, if change, upgrades the load information in the respective base station entity, upgrades the monitoring base station indices information of user subject simultaneously, carries out next step then; Otherwise, directly carry out next step;
Step 5-4), to other user subjects in scene execution in step 5-1 again)-step 5-3), all user subjects in scene have all obtained handling.
In the technique scheme, described step 6) comprises:
Step 6-1), obtain the monitoring base station indices information of a user subject;
Step 6-2), obtain monitoring the positional information of base station by monitoring base station indices information, length, the angle information of link between calculating user subject and monitoring base station;
Step 6-3), the instant channel response of the link of the link of calculating active user and serving BS and active user and all monitoring base stations.
The invention has the advantages that:
1, the stronger versatility of simulating scenes structure.The scene structure that the present invention is directed under the demands of different has carried out object and function extraction, has obtained a basic parameter and function collection, can satisfy the demand that most multi-BS (base station) multi-user scene makes up, thereby possess stronger versatility
2, the stronger flexibility of simulating scenes structure.Method of the present invention provides support to the state of dynamic change system; Can satisfy static and dynamic demand, simultaneously, to the control of base station and customer parameter; Can simulate various situation; And parameter and controlled function are separated to a certain extent, thereby to the increase and decrease of base station and customer parameter and the support of newly adding function, possess stronger flexibility
3, the ease for use of simulating scenes structure.System and method data of the present invention respectively become module with function, and interface definition is clear, can under less modification, meet the different needs, and therefore, possess very strong ease for use.
Description of drawings
Fig. 1 is the structure chart of the constructing system of multiple base stations and multiple user simulating scenes of the present invention;
Fig. 2 is the flow chart of the construction method of multiple base stations and multiple user simulating scenes of the present invention;
Fig. 3 is the flow chart when scene is done initialization;
Flow chart when Fig. 4 upgrades for scene is done;
Flow chart when Fig. 5 samples for link.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
With reference to figure 1, the constructing system of multiple base stations and multiple user simulating scenes of the present invention comprises base station entity maintenance module, user subject maintenance module, scene initialization module, scene update module, link sampling module and physical channel module.Explain respectively in the face of the function of above-mentioned module in the system down.
The base station entity maintenance module is used for safeguarding the base station entity of simulated environment.Described maintenance comprises associative operations such as establishment, modification, deletion, inquiry.So-called base station entity is meant the recording of information entity of the base station in the simulating scenes, and this record entity institute information recorded comprises physical message and function information.Physical message comprises sector auxiliary information, service-user index information, coverage, base station position information etc.Function information comprises base station frequency resource information, load information, antenna for base station configuration information, base station transmitting power information, base station indices etc.In a scene, the base station entity that the base station entity maintenance module is safeguarded can have a plurality of, and institute's information recorded can be different in the different base station entity.
The user subject maintenance module is used for safeguarding the user subject of simulated environment.So-called user subject is meant the record entity of the user profile in the simulating scenes, and this record entity institute information recorded comprises that user index information, user monitor base station indices information, serving BS information, customer position information, user's motion track information, user load information, user antenna configuration information etc.User in the above-mentioned information monitors base station indices information and is used to describe the sequence number of monitoring the base station, is meant that the user is appreciable and monitor the base station, has the possible base station of the service of providing.Corresponding with it serving BS is meant and to the user serving base station is provided.In a scene, the user subject that the user subject maintenance module is safeguarded can have a plurality of, and institute's information recorded can be different in the different user entity.
Scene initialization module is used for the scene of want emulation is done initialization operation; Comprise that the configuration with the whole simulation scene is initialised in base station entity and the user subject; Simultaneously; Content (like user's movement locus, comprising the speed and the direction of motion, user's position etc.) to there not being configuration in the simulating scenes is carried out random initializtion.
The scene update module is used for upgrading the information of base station entity and user subject; Comprise that the movement locus according to the user upgrades user's position; And then upgrade user's serving BS and monitor base station information, and information such as the load of base station and service user index.
The link sampling module is used for the link that user subject user monitored of current time is done the link information sampling; From user subject and base station entity, obtain the information such as distance, angle of link; And input to the physical channel module, thereby obtain the instant channel response of link.
The physical channel module is used for according to configuration information polytype physical channel response being provided, for example AWGN, Rayleigh, Lai Si, TU, SCME or the response of self-defining physical channel.
It more than is explanation to scene constructing system of the present invention; In Fig. 2, further provided explanation, having comprised: at first wanted pre-configured corresponding scene parameter, then according to parameter initialization base station entity and user subject to the complete building process of scene; Then in the emulation cycle, scene is upgraded operation; Described renewal operation comprises the renewal to base station entity and user subject, and obtains the instant channel response of current all links, until the termination in emulation cycle.Below in conjunction with the scene constructing system detailed process that scene makes up is explained.
In simulation process, need to make up the scene of a certain type; For example to make up a scene that comprises 19 base stations and 32 users; According to make up the content of scene; Need pre-configured corresponding information, like the coverage of base station and user's number, position that the base station belongs to, base station, user's number of antennas, physical message and the function information in each base station, the user load information, user antenna configuration information among each user etc.For example, the antenna of base station is 4, and transmitting power is 46dBm, and coverage is 500 meters, three sectors, and the system bandwidth of 20MHz, user's antenna is 2, thermal noise power is-127dBm/Hz, the user antenna gain, customer location and translational speed are at random.
After accomplishing above-mentioned information configuration, call scene initialization module below and do initialization operation.With reference to figure 3, in initialization procedure, scene initialization module is called the base station entity maintenance module and is created 19 base station entity that specify number according to configuration information, and the initial position of base station entity that initialization is created.After creating base station entity; Also to carry out initialization to physical message and the function information except that the load of base station except that the service user index in the establishment base station entity according to configuration information; For example; The antenna number of each base station is set at 4, and transmission power setting is 46dBm, and coverage is set at 500 meters.In above-mentioned initial procedure, can there be difference in the physical message of different base station entity and function information.In addition, scene initialization module also will be according to 32 user subjects of configuration information invoke user entity maintaining module creation, and the user load information in each user subject, user antenna configuration information are given initialization.
Scene initialization module except according in advance information configured base station entity is done the initialization operation, also to do random initializtion to some contents that not have to dispose.For example, the position of each user subject in the scene, translational speed, moving direction all can be given initialization through mode at random.
After confirming the initial position of user subject, scene initialization module just can be known a certain user subject in the service range of which base station entity, thereby is that correlation between user subject and base station entity is carried out initialization operation.In initialization procedure; Can know by the initial position of user subject which the base station around it has; Monitoring base station indices information according to this information updating user subject; Can also know user subject provides service by which base station, according to the serving BS information of this information updating user subject.After obtaining monitoring base station indices information and service base station information, can also be according to the base station load information and service user index information of the base station entity of these information updating correspondence positions.
Can find out from above-mentioned initialization procedure; The present invention can be provided with the number of base station, user's number as required when making up scene; Simultaneously; When the characterisitic parameter that disposes each base station and each user's characterisitic parameter; Owing to adopted the data manipulation that is separated with simulation run; So can be provided with according to different demands; Reuse the different handover-target base station scene of effect, different base stations frequency resource simulation different resources scheduling situation, the simulation of different base stations initial load situation etc. such as the frequency resource that different base stations number of antennas simulation MIMO scene, different base stations transmitting power simulation different received signal strength signal intensity, large scale decline that the different base stations coverage simulations is different, different base stations number of sectors anolog base station are set; Different user's initialized location is set for another example makes the user concentrate on certain or certain several base station, different user movement tracks is set simulates different Doppler effect, different user antenna numbers is set simulates MIMO scene etc., thereby increased the flexibility and the versatility of scene greatly.
The constructed scene of the present invention can change along with the change of time, and for example, the position of the user subject in the scene is moved possibly, and the base station entity under the user subject also may change because of the change of user subject position.Therefore, at week regular hour after date, need upgrade scene.The renewal of scene is mainly realized by the scene update module.
With reference to figure 4, the scene update module is obtained current time information, travels through all user subjects in the scene then, each user subject is done following operation: the current location of calculating this user subject according to translational speed, moving direction, current time; After obtaining the current location of user subject, just can upgrade the customer position information and monitoring base station indices information of active user's entity; If variation has also taken place in the serving BS of user subject, then upgrade the load information in the relevant base station entity, upgrade the monitoring base station indices information of user subject simultaneously.In aforesaid operations, why to upgrade that to monitor base station indices information be because along with the moving of user, the appreciable base station around the user may change.In addition, after changing serving BS, serving BS originally can change one into monitors the base station, therefore also need upgrade the monitoring base station indices information of user subject.
In simulated environment; Communicate through physical channel between user subject and the base station entity; The foundation of physical channel needs corresponding link information, therefore, when scene makes up, also will be gathered the link information of all active links in the scene by the link sampling module.With reference to figure 5, all 32 user subjects in the link sampling module traversal scene are done following operation to each user subject: obtain the base station indices information of monitoring; Obtain monitoring the positional information of base station by monitoring base station indices information, by information such as the length of link between the positional information calculation user subject of monitoring the base station and monitoring base station, angles; Call the physical channel module and obtain the instant channel response of link and the active user of active user and serving BS and the link that all monitor base stations.The link information that the link sampling module is gathered can be used to base station gain, shadow fading, path loss are calculated, and also can be used for making up the physical channel of smooth or frequency selectivity, rapid fading or slow fading.
The physical channel module at first will be obtained the type of current physical channel and the link information that the link sampling module is produced when producing channel response, call corresponding physical channel function to produce the instant channel response according to the type of physical channel then.In preamble, mention; Physical channel module of the present invention all provides support to several kinds of typical channel models in the prior art; For example, what the generation of Rayleigh channel was used is the jakes model, and Rice channel is on the basis of Rayleigh channel, to have increased the zero-frequency component; The TU model is the multipath channel that on the basis of rayleigh model, has made up 9 Rayleigh fading characteristics, and what the SCME channel then adopted is the model of 3GPP.When producing the instant channel response, comprised following steps:
Step 1, traversal link;
Transmitting antenna under step 2, the current link of traversal;
Reception antenna under step 3, the traversal current emission antenna correspondence;
Step 4, obtain instant channel response;
If step 5 reception antenna has traveled through, then forward step 6 to, otherwise, forward step 3 to;
If step 6 transmitting antenna has traveled through, then forward step 7 to, otherwise, forward step 2 to;
If step 7 link traversal is intact, then finish, otherwise, forward step 1 to.
It more than is explanation to multiple base stations and multiple user simulating scenes constructing system of the present invention and corresponding construction method.Can find out that from above-mentioned explanation the present invention can create specific scene as required, is not limited to the establishment of a certain scene, has good versatility and autgmentability.Multiple base stations and multiple user simulating scenes constructing system of the present invention can be applied in the analogue system.
It should be noted last that above embodiment is only unrestricted in order to technical scheme of the present invention to be described.Although the present invention is specified with reference to embodiment; Those of ordinary skill in the art is to be understood that; Technical scheme of the present invention is made amendment or is equal to replacement, do not break away from the spirit and the scope of technical scheme of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (11)
1. the constructing system of a multiple base stations and multiple user simulating scenes; It is characterized in that, comprise the base station entity maintenance module, the user subject maintenance module that is used for maintenance customer's entity that are used for the base station maintenance entity, be used for to scene do initialization operation scene initialization module, the scene update module that is used for scene is upgraded, the link sampling module of link data and the physical channel module that is used to provide the response of polymorphic type physical channel are used to sample; Wherein, Described base station entity is the recording of information entity of the base station in the simulating scenes; Described user subject is the record entity of the user profile in the simulating scenes, and described base station entity maintenance module and user subject maintenance module are created base station entity and the user subject that specifies number according to the configuration information of scene; Described scene initialization module is according to the said base station entity of configuration information initialization of scene and the information in the user subject; Random initializtion comprises the content of user subject movement velocity, the direction of motion, position, and the relation between said base station entity and user subject is carried out initialization; Described scene update module is upgraded the information in said base station entity and the user subject at week regular hour after date according to the real-time change of user subject position; Described link sampling module is used for the link that user subject user monitored of current time is done the link information sampling; And from user subject and base station entity, obtain the distance and the angle information of link; And resulting information inputed to said physical channel module, said physical channel module is used to generate the instant channel response of each active link.
2. the constructing system of multiple base stations and multiple user simulating scenes according to claim 1 is characterized in that, includes and base-station-related information in the described base station entity, comprises physical message and function information; Wherein, described physical message comprises sector auxiliary information, service-user index information, coverage, base station position information; Described function information comprises base station frequency resource information, load information, antenna for base station configuration information, base station transmitting power information, base station indices.
3. the constructing system of multiple base stations and multiple user simulating scenes according to claim 1; It is characterized in that; Described user subject includes and subscriber-related information, comprises that user index information, user monitor base station indices information, serving BS information, customer position information, user's motion track information, user load information, user antenna configuration information.
4. construction method based on the multiple base stations and multiple user simulating scenes of the constructing system of each described multiple base stations and multiple user simulating scenes in the claim 1 to 3 comprises:
Step 1), according to make up the content configuration information of scene;
Step 2), create the base station entity that specifies number;
The user subject that step 3), establishment specify number;
Step 4), according to the information in step 1) said base station entity of resulting configuration information initialization and the user subject; Random initializtion comprises the content of user subject movement velocity, the direction of motion, position, and the relation between said base station entity and user subject is carried out initialization.
5. the construction method of multiple base stations and multiple user simulating scenes according to claim 4 is characterized in that, also comprises the scene update step, comprising:
Step 5), judge whether current time has arrived the update cycle, after arriving the update cycle, upgrade the information in said base station entity and the user subject, carry out next step then according to the real-time change of user subject position; Otherwise, directly carry out next step;
Step 6), gather the link information of active link between each user subject and base station, generate the instant channel response of each active link.
6. the construction method of multiple base stations and multiple user simulating scenes according to claim 5; It is characterized in that; In described step 1), described configuration information comprises base station and user's number, the position at place, base station, the coverage of base station, user's number of antennas, the physical message in each base station and function information, user load information, the user antenna configuration information among each user.
7. the construction method of multiple base stations and multiple user simulating scenes according to claim 5; It is characterized in that; In described step 4), comprise: the sector auxiliary information in the base station entity, coverage, base station position information, base station frequency resource information, antenna for base station configuration information, base station transmitting power information, base station indices are carried out initialization according to the information in the said base station entity of configuration information initialization.
8. the construction method of multiple base stations and multiple user simulating scenes according to claim 5; It is characterized in that; In described step 4), comprise: the user load information in the user subject, user antenna configuration information are given initialization according to the information in the said user subject of configuration information initialization.
9. the construction method of multiple base stations and multiple user simulating scenes according to claim 5; It is characterized in that; In described step 4); Relation between said base station entity and user subject is carried out initialization to be comprised: according to the monitoring base station indices information and the serving BS information of the initial position initialization user subject of user subject, and according to the base station load information and service user index information of said monitoring base station indices information with service base station information initialization respective base station entity.
10. the construction method of multiple base stations and multiple user simulating scenes according to claim 5 is characterized in that, described step 5) comprises:
Step 5-1), calculate the current location of a user subject in the scene;
Step 5-2), upgrade the customer position information in the user subject and monitor base station indices information according to the current location of user subject;
Step 5-3), whether the serving BS at judges entity place variation has taken place, if change, upgrades the load information in the respective base station entity, upgrades the monitoring base station indices information of user subject simultaneously, carries out next step then; Otherwise, directly carry out next step;
Step 5-4), to other user subjects in scene execution in step 5-1 again)-step 5-3), all user subjects in scene have all obtained handling.
11. the construction method of multiple base stations and multiple user simulating scenes according to claim 5 is characterized in that, described step 6) comprises:
Step 6-1), obtain the monitoring base station indices information of a user subject;
Step 6-2), obtain monitoring the positional information of base station by monitoring base station indices information, length, the angle information of link between calculating user subject and monitoring base station;
Step 6-3), the instant channel response of the link of the link of calculating active user and serving BS and active user and all monitoring base stations.
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