CN102802184A - Method, device and system for simulation of wireless network channel - Google Patents
Method, device and system for simulation of wireless network channel Download PDFInfo
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- CN102802184A CN102802184A CN2011101351995A CN201110135199A CN102802184A CN 102802184 A CN102802184 A CN 102802184A CN 2011101351995 A CN2011101351995 A CN 2011101351995A CN 201110135199 A CN201110135199 A CN 201110135199A CN 102802184 A CN102802184 A CN 102802184A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/06—Testing, supervising or monitoring using simulated traffic
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- H—ELECTRICITY
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- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/391—Modelling the propagation channel
- H04B17/3912—Simulation models, e.g. distribution of spectral power density or received signal strength indicator [RSSI] for a given geographic region
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- H—ELECTRICITY
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
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Abstract
The invention discloses a method, a device and a system for the simulation of a wireless network channel. The method comprises the following steps of: determining channel characteristics of the wireless network channel according to external field channel data; and transmitting baseband data between a mobile station and base stations on the basis of the channel characteristics of the wireless network channel. The device comprises a file management unit and a signal processing unit. An actual wireless network channel environment of an external field can be recreated indoors, and channel environments required by a user, such as the switching of the mobile station between the base stations and the location of the mobile station on the edge of a network can be flexibly simulated by editing the channel characteristics to verify a wireless base station system product, accelerate fault convergence and shorten time required by the performance stabilization of the wireless base station system product. By the system integrating a plurality of devices for the simulation of the wireless network channel, a plurality of base stations and mobile stations can be supported.
Description
Technical field
The present invention relates to the wireless communication technique field, relate in particular to a kind of realization radio network information channel method of emulation, device and system.
Background technology
The propagation of electric wave is not a single-pathway in the wireless channel, but reflected wave synthetic in many paths.Because electric wave is different through the distance in each path, thus the reflected wave time of advent in each path be that time delay is different.When transmitting terminal sent an extremely narrow pulse signal, the signal that travelling carriage receives was made up of the pulse signal of many different delay, is called time delay and expands.
Because the reflected wave time delay in each path is different, phase place is also just different.A plurality of signals of out of phase are at the receiving terminal superposition, and the amplitude that receives signal will sharply change, and promptly produce rapid fading.This decline is caused by multiple path, so be called multipath fading.Receive signal except that rapid fading appears in instantaneous value, also possibly cause slow fading by shadow effect and meteorological reason.
Because the mobility of travelling carriage also has Doppler effect in the mobile communication in the wireless channel.Doppler effect has further strengthened the complexity of mobile communication.
The radio channel characteristic of more than referring to comprises multipath transmisstion, time delay expansion, fading characteristic and Doppler effect etc., only is the wireless channel of point-to-point.In the honeycomb mobile communication, the signal that send at the terminal is gone back the quilt a plurality of neighbor base stations adjacent with serving BS and is received except being received by the service base station, and the up channel that constitutes neighbor base station disturbs; Equally, base station transmit signals is also received by the terminal of adjacent area except being received by the terminal in its coverage simultaneously, and the down channel that has therefore constituted the terminal, adjacent area disturbs.Thisly be called radio network information channel at the wireless channel environment of cellular radio communication system mid point to multiple spot, multipoint-to-point and multiple spot to multiple spot.Radio network information channel also has confidential relation with the cellular network topological structure except changing with communication geographical environment, translational speed.
The complexity of radio network information channel, diversity and time variation have brought great difficulty to wireless base system design and system parameters configuration.Usually wireless base system was difficult to its systematic function under network environment of prevision before using in batches.Therefore, wireless emulation technology is being played the part of important role in wireless technology in the wireless system research and development.
The wireless channel simulation technology mainly contains soft simulation technology and channel simulator technology at present.
The soft simulation technology: carry out wireless modeling through Software tool, the output simulation result, generally operation in PC (Personal Computer, PC), the soft simulation technology generally is used for off-line, nonreal time simulation.
The channel simulator technology: carry out wireless modeling through embedded system, the channel data that produces modeling acts on actual base band data in real time.But only can simulate point-to-point channel situation, simulation is difficult to competent to actual channel.
Summary of the invention
The technical problem that the present invention will solve is, a kind of radio network information channel method of emulation, device and system are provided, and sets up the radio network information channel simulated environment in the laboratory, and the research and development of wireless base system are provided support.
The technical scheme that the present invention adopts is that the device of said radio network information channel emulation comprises:
File management unit is used for the channel characteristics file according to outfield channel data generation radio network information channel;
Signal processing unit is used to connect travelling carriage and base station, and based on the channel characteristics file of radio network information channel the base band data between travelling carriage and base station is carried out the channelizing processing.
Further, this device also comprises:
First FCU file control unit is used for the said channel characteristics file that file management unit generates is downloaded to signal processing unit and regularly renewal.
Further, this device also comprises:
The interface processing unit, signal processing unit connects travelling carriage and base station through said interface processing unit, and said interface processing unit is used for carrying out the base band data mapping between travelling carriage and the signal processing unit and between base station and the signal processing unit.
Further, said file management unit also is used for being connected situation with the topology of interface processing unit according to travelling carriage and interface processing unit and base station and generates interface base band data mapped file;
This device also comprises:
Second FCU file control unit is used for the interface base band data mapped file that file management unit generates is downloaded to the interface processing unit.
Further, said file management unit writes down the channel characteristics of radio network information channel according to channel data of in the live network channel circumstance, gathering or channel circumstance model Network Based, generates the channel characteristics file of radio network information channel.
Further, said travelling carriage all is connected through optical fiber or high speed cable with the interface processing unit with interface processing unit, base station, is connected through core bus between interface processing unit and the channel bank.
The present invention also provides a kind of system of radio network information channel emulation, comprising: the device of a plurality of radio network information channel emulation links together through signal processing unit separately, and this device comprises:
File management unit is used for the channel characteristics file according to outfield channel data generation radio network information channel;
Signal processing unit is used to connect travelling carriage and base station, and based on the channel characteristics file of radio network information channel the base band data between travelling carriage and base station is carried out the channelizing processing.
Based on the device of above-mentioned radio network information channel emulation, the present invention also provides a kind of radio network information channel method of emulation, comprising:
Confirm the channel characteristics of radio network information channel according to the outfield channel data;
Channel characteristics based on radio network information channel carries out the channelizing processing to the base band data between travelling carriage and base station.
Further, saidly confirm specifically to comprise the channel characteristics of radio network information channel according to the outfield channel data:
According to channel data of in the live network channel circumstance, gathering or channel circumstance model Network Based, the channel characteristics of record radio network information channel.
Further, said channel characteristics based on radio network information channel carries out channelizing to the base band data between travelling carriage and base station to be handled, and specifically comprises:
Regularly upgrade the channel characteristics of radio network information channel, through optical fiber or high speed cable the base band data between travelling carriage and base station is carried out channelizing based on said channel characteristics and handle.
Adopt technique scheme, the present invention has advantage at least:
Realization radio network information channel method of emulation according to the invention, device and system; Can be at the radio network information channel environment of indoor reproduction outfield reality; Also can be through editor's channel characteristics, the channel circumstance of user's needs such as analogue mobile station switches between the base station neatly, travelling carriage is positioned at network edge is used for the checking of wireless base system product; The stable time that needs of wireless base system properties of product is shortened in the acceleration disturbance convergence.Said system with the device of a plurality of said realization radio network information channel emulation integrates can support more base station and travelling carriage.
Description of drawings
Fig. 1 is an apparatus structure sketch map of realizing radio network information channel emulation described in first embodiment;
Fig. 2 is an apparatus structure sketch map of realizing radio network information channel emulation described in second embodiment;
Fig. 3 is an apparatus structure sketch map of realizing radio network information channel emulation described in the 3rd embodiment;
Fig. 4 is an apparatus structure sketch map of realizing radio network information channel emulation described in the 4th embodiment;
Fig. 5 is a system configuration sketch map of realizing radio network information channel emulation described in the 5th embodiment;
Fig. 6 realizes radio network information channel method of emulation flow chart described in the 6th embodiment;
Fig. 7 is base station and a travelling carriage and realize the concrete topological connection relation sketch map of the device of radio network information channel emulation among the 7th embodiment;
Fig. 8 is a channel characteristics script sketch map among the 7th embodiment;
Fig. 9 is an interface mappings script sketch map among the 7th embodiment.
Embodiment
Reach technological means and the effect that predetermined purpose is taked for further setting forth the present invention, below in conjunction with accompanying drawing and preferred embodiment, to the present invention be elaborated as after.
In order to set up the radio network information channel simulated environment in the laboratory, fully expose the problem that exists in the base station system product.The present invention mainly provides a kind of device, system and method for realizing radio network information channel emulation.
First embodiment of the invention, a kind of device of realizing radio network information channel emulation, as shown in Figure 1, comprise following part:
1) file management unit is used for the channel characteristics file according to outfield channel data generation radio network information channel.This channel characteristics file can be the channel characteristics script.Concrete, file management unit writes down the channel characteristics of radio network information channel according to channel data of in the live network channel circumstance, gathering or channel circumstance model Network Based, generates the channel characteristics file of radio network information channel.
2) signal processing unit is used to connect several mobile stations and base station, and based on the channel characteristics file of radio network information channel the base band data between travelling carriage and base station is carried out the channelizing processing.Concrete, all be connected between travelling carriage and channel bank, base station and the channel bank through optical fiber or high speed cable.This optical fiber and high speed cable all can transmit base band data.
Second embodiment of the invention, a kind of device of realizing radio network information channel emulation, as shown in Figure 2, comprise following composition portion:
1) file management unit is used for the channel characteristics file according to outfield channel data generation radio network information channel.This channel characteristics file can be the channel characteristics script.Concrete, file management unit writes down the channel characteristics of radio network information channel according to channel data of in the live network channel circumstance, gathering or channel circumstance model Network Based, generates the channel characteristics file of radio network information channel.
2) first FCU file control unit is used for this channel characteristics file that file management unit generates is downloaded to signal processing unit and regularly renewal.The download channels tag file is more consuming time, and the process of renewal is that the part that changes in this channel characteristics file is upgraded, and download channels tag file again.
3) signal processing unit is used to connect several mobile stations and base station, and based on the channel characteristics file of radio network information channel the base band data between travelling carriage and base station is carried out the channelizing processing.Concrete, all be connected between travelling carriage and channel bank, base station and the channel bank through optical fiber or high speed cable.
Third embodiment of the invention, a kind of device of realizing radio network information channel emulation, as shown in Figure 3, comprise following composition portion:
1) file management unit is used for the channel characteristics file according to outfield channel data generation radio network information channel.This channel characteristics file can be the channel characteristics script.Concrete, file management unit writes down the channel characteristics of radio network information channel according to channel data of in the live network channel circumstance, gathering or channel circumstance model Network Based, generates the channel characteristics file of radio network information channel.
2) first FCU file control unit is used for this channel characteristics file that file management unit generates is downloaded to signal processing unit and regularly renewal.
3) signal processing unit is used for connecting several mobile stations and base station through the interface processing unit, and based on the channel characteristics file of radio network information channel the base band data between travelling carriage and base station is carried out the channelizing processing.Concrete, all be connected between travelling carriage and interface processing unit, base station and the interface processing unit through optical fiber or high speed cable.Be connected through core bus between interface processing unit and the channel bank.
4) interface processing unit is used for converging and Interface Matching with realization carrying out the base band data mapping between travelling carriage and the signal processing unit and between base station and the signal processing unit.In the present embodiment, through increasing the interface processing unit, can expand, increase individual channel processing unit access capability, reduction devices interconnect progression the quantity that signal processing unit connects travelling carriage and base station.
Fourth embodiment of the invention, a kind of device of realizing radio network information channel emulation, as shown in Figure 4, comprise following composition portion:
1) file management unit is used for the channel characteristics file according to outfield channel data generation radio network information channel, and is connected situation generation interface base band data mapped file with the topology of interface processing unit according to travelling carriage and interface processing unit and base station.This channel characteristics file can be the channel characteristics script.Interface base band data mapped file can be the interface mappings script.Concrete, file management unit writes down the channel characteristics of radio network information channel according to channel data of in the live network channel circumstance, gathering or channel circumstance model Network Based, generates the channel characteristics file of radio network information channel.
2) first FCU file control unit is used for this channel characteristics file that file management unit generates is downloaded to signal processing unit and regularly renewal.
3) signal processing unit is used for connecting several mobile stations and base station through the interface processing unit, and based on the channel characteristics file of radio network information channel the base band data between travelling carriage and base station is carried out the channelizing processing.Concrete, all be connected between travelling carriage and interface processing unit, base station and the interface processing unit through optical fiber or high speed cable.Be connected through core bus between interface processing unit and the channel bank.
4) second FCU file control unit is used for the interface base band data mapped file that file management unit generates is downloaded to the interface processing unit.
5) interface processing unit is used for converging and Interface Matching with realization carrying out the base band data mapping between travelling carriage and the signal processing unit and between base station and the signal processing unit.In the present embodiment, through increasing the interface processing unit, can expand, increase individual channel processing unit access capability, reduction devices interconnect progression the quantity that signal processing unit connects travelling carriage and base station.
Fifth embodiment of the invention; The system of the realization radio network information channel emulation that connects to form with device described in two first embodiment is an example; As shown in Figure 5, this system comprises following part: the optical fiber or the high speed cable of the signal processing unit of a plurality of said devices through separately link together.
Sixth embodiment of the invention, a kind of realization radio network information channel method of emulation, as shown in Figure 6, may further comprise the steps:
Step S101 confirms the channel characteristics of radio network information channel according to the outfield channel data.Concrete, according to channel data of in the live network channel circumstance, gathering or channel circumstance model Network Based, the channel characteristics of record radio network information channel.
Step S102 carries out channelizing based on the channel characteristics of radio network information channel to the base band data between travelling carriage and base station and handles.Concrete, the channel characteristics of radio network information channel is upgraded in timing, through optical fiber or high speed cable the base band data between travelling carriage and base station is carried out channelizing based on this channel characteristics and handles.
Seventh embodiment of the invention is that example is done further to describe in detail with 8 base stations, 4 travelling carriage analogue systems.Base station (being called for short bbu) is a double antenna, and travelling carriage (being called for short ue) is a single antenna.The concrete topological connection relation of the device of base station and travelling carriage and the emulation of realization radio network information channel is as shown in Figure 7, and each interface processing unit inserts 2 base stations and 1 travelling carriage through optical fiber.Because the antenna number quantitative limitation, 2 base stations are transmitted 2 base band datas respectively, 1 base band data of 1 travelling carriage transmission.The interface that being connected between interface processing unit and base station and the travelling carriage, core bus and channel bank externally connect all possesses base band data transmission speed.Each four-headed arrow is represented a connection that possesses base band data transmission speed, can transmit four base band datas at most.
Realize that the radio network information channel process of simulation is following:
Concrete, existing channel collecting device collects channel data from the outfield, and file management unit generates the channel characteristics script according to the channel data of gathering from the outfield, if with the frequency continuous collecting set, will obtain channel characteristics script sequence so.Fig. 8 is the channel characteristics script, the channel characteristics sample value when wherein containing transmission base band data between the total interface of channel bank.Channel bank has 22 interfaces, therefore can transmit 88 base band data: base band id1, base band id2 ..., base band id88, the channel characteristics when specifically having listed transmission base band data between all base band among Fig. 8.
Base band bbu1-1 and base band bbu1-2 are the corresponding respectively base band of two antennas on the bbu1 of base station, and base band bbu2-1 and base band bbu2-2 are the corresponding respectively base band of two antennas on the bbu2 of base station, and base band ue is the corresponding base band of single antenna on the travelling carriage ue
Step 3, first FCU file control unit downloads to the interface mappings script in the interface processing unit.
Step 4, second FCU file control unit downloads to channel characteristics script sequence in the channel bank.
Step 5, interface processing unit be according to the interface mappings script, will converge on 2 interfaces that the interface processing unit is connected with core bus through mapping from 5 base band datas of travelling carriage and base station.
Step 6, channel bank receives base band data through core bus, carries out network channel according to the channel characteristics script and synthesizes, and is about to same base station correlated channels characteristic superposition, then base band data is transferred on the corresponding base band of backboard through network channel.
Step 7, interface processing unit be according to the interface mappings script, is mapped to the base band data on the backboard on interface processing unit and the interface that travelling carriage or base station are connected.
Realization radio network information channel method of emulation according to the invention, device and system; Through editor's channel characteristics; The channel circumstance that users such as analogue mobile station switches between the base station neatly, travelling carriage is positioned at network edge need; Be used for the checking of wireless base system product, the stable time that needs of wireless base system properties of product is shortened in the acceleration disturbance convergence.Said system with the device of a plurality of said realization radio network information channel emulation integrates can support more base station and travelling carriage.
Through the explanation of embodiment, should be to reach technological means and the effect that predetermined purpose takes to be able to more deeply and concrete understanding to the present invention, yet appended diagram only provide the usefulness of reference and explanation, is not to be used for the present invention is limited.
Claims (10)
1. the device of a radio network information channel emulation is characterized in that, comprising:
File management unit is used for the channel characteristics file according to outfield channel data generation radio network information channel;
Signal processing unit is used to connect travelling carriage and base station, and based on the channel characteristics file of radio network information channel the base band data between travelling carriage and base station is carried out the channelizing processing.
2. according to the device of the said radio network information channel emulation of claim 1, it is characterized in that said device also comprises:
First FCU file control unit is used for the said channel characteristics file that file management unit generates is downloaded to signal processing unit and regularly renewal.
3. according to the device of claim 1 or 2 said radio network information channel emulation, it is characterized in that said device also comprises:
The interface processing unit, signal processing unit connects travelling carriage and base station through said interface processing unit, and said interface processing unit is used for carrying out the base band data mapping between travelling carriage and the signal processing unit and between base station and the signal processing unit.
4. according to the device of the said radio network information channel emulation of claim 3; It is characterized in that; Said file management unit also is used for being connected situation with the topology of interface processing unit according to travelling carriage and interface processing unit and base station and generates interface base band data mapped file;
Said device also comprises:
Second FCU file control unit is used for the interface base band data mapped file that file management unit generates is downloaded to the interface processing unit.
5. according to the device of the said radio network information channel emulation of claim 1; It is characterized in that; Said file management unit is according to channel data of in the live network channel circumstance, gathering or channel circumstance model Network Based; The channel characteristics of record radio network information channel, the channel characteristics file of generation radio network information channel.
6. according to the device of the said radio network information channel emulation of claim 3; It is characterized in that; Said travelling carriage all is connected through optical fiber or high speed cable with the interface processing unit with interface processing unit, base station, is connected through core bus between interface processing unit and the channel bank.
7. the system of a radio network information channel emulation is characterized in that, comprising: the device of a plurality of radio network information channel emulation links together through signal processing unit separately, and said device comprises:
File management unit is used for the channel characteristics file according to outfield channel data generation radio network information channel;
Signal processing unit is used to connect travelling carriage and base station, and based on the channel characteristics file of radio network information channel the base band data between travelling carriage and base station is carried out the channelizing processing.
8. a radio network information channel method of emulation is characterized in that, comprising:
Confirm the channel characteristics of radio network information channel according to the outfield channel data;
Channel characteristics based on radio network information channel carries out the channelizing processing to the base band data between travelling carriage and base station.
9. said according to Claim 8 radio network information channel method of emulation is characterized in that, saidly confirms specifically to comprise the channel characteristics of radio network information channel according to the outfield channel data:
According to channel data of in the live network channel circumstance, gathering or channel circumstance model Network Based, the channel characteristics of record radio network information channel.
10. according to Claim 8 or 9 said radio network information channel method of emulation, it is characterized in that said channel characteristics based on radio network information channel carries out channelizing to the base band data between travelling carriage and base station to be handled, and specifically comprises:
Regularly upgrade the channel characteristics of radio network information channel, through optical fiber or high speed cable the base band data between travelling carriage and base station is carried out channelizing based on said channel characteristics and handle.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110135199.5A CN102802184B (en) | 2011-05-24 | 2011-05-24 | Method, device and system for simulation of wireless network channel |
| PCT/CN2011/077960 WO2012159365A1 (en) | 2011-05-24 | 2011-08-03 | Method, device and system for implementing wireless network channel simulation |
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| CN201110135199.5A CN102802184B (en) | 2011-05-24 | 2011-05-24 | Method, device and system for simulation of wireless network channel |
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| CN102802184B CN102802184B (en) | 2015-06-03 |
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| CN105992234A (en) * | 2015-02-15 | 2016-10-05 | 中兴通讯股份有限公司 | Method and system for simulating borderless network channel environment |
| CN108039931A (en) * | 2017-12-11 | 2018-05-15 | 上海埃威航空电子有限公司 | A kind of simulated testing system of the medium-high frequency communication channel based on geography information |
| CN111721912A (en) * | 2020-06-30 | 2020-09-29 | 贵州省煤矿设计研究院有限公司 | Device and method for rapidly measuring gas pressure and gas content of coal seam |
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| EP1022872A2 (en) * | 1999-01-19 | 2000-07-26 | Lucent Technologies Inc. | Apparatus and method for providing a radio environment to test wireless communications equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105992234A (en) * | 2015-02-15 | 2016-10-05 | 中兴通讯股份有限公司 | Method and system for simulating borderless network channel environment |
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| CN111721912A (en) * | 2020-06-30 | 2020-09-29 | 贵州省煤矿设计研究院有限公司 | Device and method for rapidly measuring gas pressure and gas content of coal seam |
| CN111721912B (en) * | 2020-06-30 | 2023-02-03 | 贵州省煤矿设计研究院有限公司 | Device and method for rapidly measuring gas pressure and gas content of coal seam |
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| Publication number | Publication date |
|---|---|
| CN102802184B (en) | 2015-06-03 |
| WO2012159365A1 (en) | 2012-11-29 |
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