CN102916751B - The analogy method of radio network information channel and device - Google Patents

Abstract

The invention provides analogy method and the device of a kind of radio network information channel, wherein, said method includes: obtain the real-time fading channel sequence in outfield and the channel sequence that declines slowly；According to the fading channel sequence obtained and the channel sequence real-time Simulation radio network information channel that declines slowly.Use the technique scheme that the present invention provides, solve in correlation technique, radio network information channel simulation and the problem of real-time can not be taken into account, and then reached in the case of real-time Simulation wireless channel, it is possible to achieve the simulation of radio network information channel (the most point-to-multipoint, the letter of multipoint-to-point, multi-multipoint etc. wireless network simulation).

Description

The analogy method of radio network information channel and device

Technical field

The present invention relates to the communications field, in particular to analogy method and the device of a kind of radio network information channel.

Background technology

In wireless channel, the propagation of electric wave is not single-pathway, but the synthesis of numerous echos in many paths.By Different by the distance in each path in electric wave, thus the echo that each path is come is different for the time of advent, the most each signal Time delay different.When transmitting terminal sends a pulse signal the narrowest, the signal that mobile station receives is by many different delay Pulse forms, and we are referred to as delay spread.

Simultaneously because the echo that each path is come is different for the time of advent, phase place is also the most different.Multiple letters of out of phase Number at receiving terminal superposition, sometimes superposition and strengthen (direction is identical), sometimes superposition and weaken (in opposite direction).So, letter is received Number amplitude will drastically change, i.e. create rapid fading.This decline is caused by multiple path, so referred to as multipath declines Fall.

Additionally, reception signal is in addition to rapid fading occurs in instantaneous value, median of field strength (meansigma methods) also there will be slowly varying. Mainly caused by the change of zone locations and meteorological condition change, change over so that the refraction of electric wave is propagated and become Changing, the time delay of the signal that multipath transmisstion arrives fixed reception point changes therewith.This caused by shadow effect and meteorological reason Signal intensity, referred to as slow fading.

Due to the mobility of mobile station in mobile communication, as previously mentioned, wireless channel also has Doppler effect. In mobile communications, when mobile station shifts to base station, frequency uprises, during away from base station, and frequencies go lower.Doppler effect is further Increase the complexity of mobile communication.

The radio channel characteristic more than referred to, including multipath transmisstion, delay spread, fading characteristic and Doppler effect Deng, the only wireless channel of point-to-point.In cellular mobile telecommunications, the signal that terminal sends is except being received by serving BS Outward, also received by multiple neighbor base stations adjacent with serving BS, constitute the up channel interference (terminal to base station of neighbor base station Wireless channel be commonly referred to up channel, the wireless channel of base station to terminal is commonly referred to down channel)；Equally, base station is sent out Penetrate signal in addition to being received by the terminal in its coverage, also received by the terminal of adjacent area simultaneously, therefore constitute adjacent area eventually The down channel interference of end.Below by this in cellular radio communication system point-to-multipoint, the wireless channel ring of multipoint-to-point Border is referred to as radio network information channel.Radio network information channel, in addition to changing with communication geographical environment, translational speed change, is gone back and honeybee Nest network topology structure has close relationship.

The complexity of radio network information channel, multiformity and time variation are to wireless base system design and systematic parameter configuration Bring great difficulty.Generally wireless base system is before batch application, is difficult to predict its systematicness in a network environment Energy；Even if base station system has passed through laboratory system test.The system test environment built in laboratory is the most only supported a little Arrive function and the performance verification of point, the most only possess wireless channel simulation ability, do not possess radio network information channel analog capability.The most just It is because laboratory system and tests the various radio channel characteristic that cannot portray in real network environment, generally criticize in base station system Before amount application, need to build certain scale commercialization pilot office, fully to expose problem present in base station system.Scale is commercial Pilot office needs to put into a huge sum of money, and needs considerably long construction and service time.

Wireless emulation technology all plays the part of important role in wireless technology research and wireless system are researched and developed.Wireless system grinds Send out and the complexity of wireless technology research be far above wired system, this be primarily due to wireless environment over time, place, geography ring The conditions such as border, weather environment, mobility, interference change and wireless system complexity are greatly increased.Wireless product must Need consider to solve the impact that these factors are brought, multipath to be solved, decline, channel relevancy, noise, interference etc..

Wireless channel simulation technology mainly has soft simulation technology and channel simulator technology at present.

Soft simulation technology: carry out wireless modeling, Output simulation result by instruments such as MATLAB, typically run in PC； Soft simulation technology is generally used for off-line, nonreal time simulation.

Channel simulator: carry out wireless modeling by embedded system, modeling produce channel data real-time effect in Actual base band data.Channel simulator needs the hardware system that design research and development are new, it is possible to achieve point-to-point, Real-time Channel mould Intend.But.Channel simulator in the market is only capable of simulation point-to-point channel situation.

For the problems referred to above in correlation technique, effective solution is the most not yet proposed.

Summary of the invention

Present invention is primarily targeted at analogy method and the device that a kind of radio network information channel is provided, to solve above-mentioned asking At least one topic.

According to an aspect of the invention, it is provided the analogy method of a kind of radio network information channel, including: obtain outfield real Time fading channel sequence and the channel sequence that declines slowly；According to obtain fading channel sequence and decline slowly channel sequence real-time Simulation without Line network channel.

The above-mentioned fading channel sequence according to acquisition and the channel sequence real-time Simulation radio network information channel that declines slowly, including: will Fading channel sequence and the channel sequence that declines slowly merge, and form channel script；According to channel script analog wireless networks channel.

Fading channel sequence that above-mentioned acquisition outfield is real-time and the channel sequence that declines slowly, including: obtain real-time the declining soon in outfield Channel parameter sequence and the channel sequence that declines slowly；Fading channel sequence is generated according to the fading channel argument sequence obtained.

Fading channel argument sequence that above-mentioned acquisition outfield is real-time and the channel sequence that declines slowly, including: adopt in real time according to outfield The channel data of collection obtains fading channel argument sequence and the channel sequence that declines slowly.

Above-mentioned channel data includes: multiple-input and multiple-output MIMO type, longitude and latitude and outfield channel acquisition sequence.

According to another aspect of the present invention, it is provided that the analog of a kind of radio network information channel, including: obtain mould Block, for obtaining the real-time fading channel sequence in outfield and the channel sequence that declines slowly；Analog module, for according to the letter that declines soon obtained Road sequence and the channel sequence real-time Simulation radio network information channel that declines slowly.

Above-mentioned analog module, including: combining unit, for fading channel sequence and the channel sequence that declines slowly are merged, Form channel script；Analogue unit, for according to channel script analog wireless networks channel.

Above-mentioned acquisition module, including: acquiring unit, for obtaining the real-time fading channel argument sequence in outfield and the letter that declines slowly Road sequence；Signal generating unit, generates fading channel sequence according to the fading channel argument sequence obtained.

Above-mentioned acquiring unit, is additionally operable to the channel data according to outfield Real-time Collection and obtains fading channel argument sequence with slow Decline channel sequence.

Above-mentioned channel data includes following information: multiple-input and multiple-output MIMO type, longitude and latitude and outfield channel gather sequence Row.

By the present invention, use and obtain the real-time fading channel sequence in outfield and the channel sequence analog wireless networks that declines slowly letter The technological means in road, solves in correlation technique, it is impossible to takes into account radio network information channel simulation and the problem of real-time, and then reaches In the case of real-time Simulation wireless channel, it is possible to achieve simulation (the most point-to-multipoint or multipoint-to-point of radio network information channel Or how point-to-multipoint channel simulation).

Accompanying drawing explanation

Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, this Bright schematic description and description is used for explaining the present invention, is not intended that inappropriate limitation of the present invention.In the accompanying drawings:

Fig. 1 is the flow chart of the analogy method of the radio network information channel according to the embodiment of the present invention；

Fig. 2 is the structured flowchart of the analog of the radio network information channel according to the embodiment of the present invention；

Fig. 3 is the structural representation of the analog of the radio network information channel according to the preferred embodiment of the present invention；

Fig. 4 is the structural representation of the analog of the radio network information channel according to the preferred embodiment of the present invention one；

Fig. 5 is the schematic flow sheet of the analogy method of the radio network information channel according to the preferred embodiment of the present invention two.

Detailed description of the invention

Below with reference to accompanying drawing and describe the present invention in detail in conjunction with the embodiments.It should be noted that do not conflicting In the case of, the embodiment in the application and the feature in embodiment can be mutually combined.

Fig. 1 is the flow chart of the analogy method of the radio network information channel according to the embodiment of the present invention.As it is shown in figure 1, this stream Journey includes:

Step S102, obtains the real-time fading channel sequence in outfield and the channel sequence that declines slowly；

Step S104, according to the fading channel sequence obtained and the channel sequence real-time Simulation radio network information channel that declines slowly.

The either simulation to point-to-point wireless channel, or to radio network information channel (i.e. point-to-multipoint or multiple spot pair Point) simulation, all can use above-mentioned processing procedure to channel be simulated.Especially, to above-mentioned radio network information channel In simulation process, solution can must not take into account radio network information channel simulation (the point-to-multipoint or channel simulation of multipoint-to-point) and reality The problem of time property, and then in the case of real-time Simulation wireless channel, it is possible to achieve the simulation of radio network information channel is (i.e. to many Point or the channel simulation of multipoint-to-point, how point-to-multipoint channel simulation).

In order to preferably by the fading channel sequence obtained in above-mentioned processing procedure and decline slowly channel sequence and correlation technique In channel simulation technology (such as channel simulator) be used in combination, can be by above-mentioned fading channel sequence and the channel sequence that declines slowly Merge into script.Specifically, the above-mentioned fading channel sequence according to acquisition and the channel sequence real-time Simulation wireless network that declines slowly letter Road, can include following processing procedure: fading channel sequence and the channel sequence that declines slowly are merged, and forms channel script；Root It is believed that script analog wireless networks channel.

When being used in combination with the channel simulation technology in correlation technique, as a example by channel simulator.Can be by channel foot Originally issue channel simulator, channel simulator according to the fading channel sequence in channel script and the channel sequence information that declines slowly to reality Border base band data processes, and completes channel simulation.

Fading channel sequence that above-mentioned acquisition outfield is real-time and the concrete processing procedure of the channel sequence that declines slowly, can include with Lower processing procedure: obtain the real-time fading channel parameter in outfield and the channel sequence that declines slowly；According to the fading channel parameter sequence obtained Column-generation fading channel sequence.

In order to improve channel and the degree of approximation of outfield actual channel of simulation, the fading channel that above-mentioned acquisition outfield is real-time Argument sequence and the channel sequence that declines slowly, can include following processing procedure: obtain fast according to the channel data of outfield Real-time Collection The channel parameter sequence that declines and the channel sequence that declines slowly.The most above-mentioned channel data can include but not limited to following information: multi input Multi output MIMO type, longitude and latitude and outfield channel acquisition sequence.Can be calculated according to above-mentioned outfield channel acquisition sequence The antenna tilt parameter of fading channel argument sequence, delay parameter sequence etc..

Additionally providing the analog of a kind of radio network information channel in the present embodiment, this device is used for realizing above-mentioned enforcement Example and preferred implementation, carried out repeating no more of explanation, illustrated the module related in this device below. As used below, term " module " can realize the software of predetermined function and/or the combination of hardware.Although following example Described device preferably realizes with software, but hardware, or the realization of the combination of software and hardware is also also possible It is contemplated.Fig. 2 is the structured flowchart according to the embodiment of the present invention.As in figure 2 it is shown, this device includes:

Acquisition module 20, for obtaining the real-time fading channel sequence in outfield and the channel sequence that declines slowly；

Analog module 22, is connected with acquisition module 20, for according to the fading channel sequence obtained and the channel sequence that declines slowly Real-time Simulation radio network information channel.

In a preferred embodiment of the present invention, as it is shown on figure 3, above-mentioned analog module 22, including: combining unit 220, for fading channel sequence and the channel sequence that declines slowly being merged, form channel script；Analogue unit 222, with described Combining unit 220 is connected, for according to channel script analog wireless networks channel.

Preferably, as it is shown on figure 3, above-mentioned acquisition module 20, including acquiring unit 200, for obtaining real-time fast in outfield The channel parameter sequence that declines and the channel sequence that declines slowly；Signal generating unit 202, is connected with acquiring unit 200, according to the fading channel obtained Argument sequence generates fading channel sequence.

Preferably, above-mentioned acquiring unit 200, it is additionally operable to the channel data according to outfield Real-time Collection and obtains fading channel ginseng Number Sequence and the channel sequence that declines slowly.The most above-mentioned channel data includes following information: multiple-input and multiple-output MIMO type, longitude and latitude With outfield channel acquisition sequence.

It should be noted that above-mentioned processing module or process can use in conjunction with the channel simulator in correlation technique.

Illustrating below in conjunction with preferred embodiment, preferred embodiment below combines above-mentioned enforcement and the side of being preferable to carry out thereof Formula.

Preferred embodiment one

In order to promote the coverage of system test, the present embodiment provides a kind of and sets up radio network information channel simulation at laboratory Environment, fully exposes problem present in base station system product.For reaching above-mentioned purpose, the present embodiment provides a kind of wireless network Channel (such as fading channel) analogy method, particularly relates to network fading channel simulation side complicated under multichannel interacts Method.

Fig. 4 is the structural representation of the analog of the radio network information channel according to the preferred embodiment of the present invention one.Such as Fig. 4 Shown in, this device includes: fading channel analytic unit 40 (being equivalent to the acquiring unit 200 in acquisition module 20), fading channel Generation unit 42 (being equivalent to signal generating unit 202), channel synthesis unit 44 (being equivalent to combining unit 220).

Fading channel analytic unit 40: the channel reading outfield collection is analyzed, obtains fading channel parameter, predefined Fading channel model.

Fading channel generation unit 42: be connected with fading channel analytic unit 40, according to fading channel parameter, generates and declines soon Channel sequence.

Channel synthesis unit 44: be connected with fading channel generation unit 42, channel and the fading channel merging of declining slowly, is formed Channel bank issued by channel script, processes with the practical base-band data to input.

Preferred embodiment two

Fig. 5 is the schematic flow sheet of the analogy method of the radio network information channel according to the preferred embodiment of the present invention two.Such as Fig. 5 Shown in, the method includes:

Step S502, fading channel analytic unit 40 reads the outfield channel files gathered, including: MIMO type, antenna Inclination angle, longitude and latitude, channel model etc., specifically can be found in table 1, go to step S504 and step S506.Outside being more completely reproduced up Field channel, it is necessary to use the channel that outfield gathers.The wireless channel that outfield gathers includes decline slowly, launches power, reception merit Rate, antenna tilt, longitude and latitude etc..

Table 1

Step S504, channel files is analyzed by fading channel analytic unit 40, obtains fading channel parameter and fast The channel parameter that declines issues fading channel generation unit 42.Can also be according to model fading channel parameter, wherein about declining soon The particular content of channel parameter may refer to table 2.Go to step S508；

Table 2

Decline parameter soon
		Moment
CELLID	Or base band id of correspondence
		UE ID	Or base band id of correspondence
MIMO type
		Translational speed
Beam tilt angles
		Many through model
Extended parameter

Step S506, channel files is analyzed by fading channel analytic unit 40, and declined channel sequence slowly, such as table 3 Shown in, the channel sequence that declines slowly is issued channel synthesis unit, goes to step S510；

Table 3

Slowly decline parameter
		Moment
CELLID	Or base band id of correspondence
		UE ID	Or base band id of correspondence
Slowly decline value

Step S508, fading channel generation unit 42 produces the fading channel sequence in each path according to channel parameter, Fading channel sequence issues channel synthesis unit 44, goes to step S510；

Step S510, channel synthesis unit 44 declines channel sequence data slowly and fading channel sequence data is merged into script (as shown in table 4), issue Channel Processing, complete the simulation of radio network information channel.

Table 4

Decline parameter soon
		Moment
Input base band id

Output base band id
		Slowly decline value
First footpath fading channel sequence
		Second footpath fading channel sequence
。。。。

Multiple terminals and base station are as shown in table 5 after merging.Exist between base band id and output base band id if table 5 inputs Channel, then point out according to watch four content intersection between and add fading channel and the channel that declines slowly, otherwise add 0.

Channel script after merging is as shown in table 5.Channel bank according to table 5 to input base band data, and according to Corresponding channel carries out Channel Processing.If certain output base band id exists multiple input base band in table, the most each input is first Carry out Channel Processing according to channel sequence, then the result after Channel Processing is overlapped, be sent to export base band id.

After above-mentioned control, it is possible to realize point-to-point, how point-to-point, point-to-multipoint, multi-multipoint Channel Processing.

After table 5 expression merging, a concrete channel in channel sequence, according to the channel sample cycle, passs according to the time simultaneously Increasing, synthesis arranges multiple channel sampling points and forms channel sequence.

Owing to the channel parameter between each input base band id and input base band id is separate, it is simultaneously entered and exports it Between do not have to limit fixing relation, as long as there being channel, the most then there is channel contact, otherwise do not have channel to contact, therefore Analog systems is flexible, favorable expandability, it is possible to simultaneously support multiple channel.

Table 5

The technical scheme of the present embodiment has the advantage that

1, the channel that fading channel parameter gathers from outfield obtains, and improves channel model and outfield actual channel approximation journey Degree；

2, fading channel produces in real time, it is to avoid substantial amounts of fading channel is downloaded；

3, fading channel produces and the channel that declines slowly is separate, but is all obtained by actual measurement examination channel；

4, favorable expandability, supports multiple, multiple independent fading channels.

The above-mentioned technology of the present embodiment can realize radio network information channel analog, but application is not limited to this.

Preferred embodiment three

The present embodiment is as a example by single user down channel inclination angle, wireless network analog systems list community and speed parameter, to skill The enforcement of art scheme is described in further detail.

The channel data that outfield gathers is as follows:

{ x, y, h}, x represent that longitude, y represent that latitude, h represent height to position tlv triple.

Antenna for base station top longitude and latitude LB={b1, b2, b3}

Base station main lobe unit direction vector α={ a, b, c}, | | α | |=1；

Descending

The terminal longitude and latitude in Ti moment is Li={ui1, ui2, ui3}

The terminal longitude and latitude in Ti+1 moment is Li+1={u (i+1) 1, u (i+1) 2, u (i+1) 3}

The channel sample cycle is T.

The concrete step that processes of the present embodiment can realize based on the analog shown in Fig. 4, and concrete process step is as follows:

Step 1, fading channel analytic unit 40 reads the channel that outfield gathers, including MIMO type, antenna tilt, longitude and latitude Degree, channel model etc., read the longitude and latitude in Ti moment simultaneously.

Step 2, channel data is analyzed by fading channel analytic unit 40:

Terminal longitudinal speed: V1=(u (i+1) 1-ui1)/T；

Terminal latitude direction speed: V2=(u (i+1) 2-ui2)/T

Terminal short transverse speed: V3=(u (i+1) 3-ui3)/T

Terminal and base station main lobe horizontal direction angle=arcos (u (i+1) 1-b1, u (i+1) 2-b2}*{a, b}/(| u (i + 1) 1-b1, u (i+1) 2-b2} | * | { a, b} |)

Terminal and base station main lobe vertical direction angle: arcos (Li+1-LB) * 0,0,1}/(| (Li+1-LB) | * | 0,0, 1} |)-arcos α * 0,0,1}/(| α | * | { 0,0,1} |)

Step 3,40 fading channel parameters of fading channel analytic unit issue fading channel generation unit 42.

Step 4, fading channel generation unit 42 produces the fading channel sequence of each warp according to channel parameter.

Step 5,42 fading channel sequences of fading channel generation unit issue channel synthesis unit 44.

Step 6, channel synthesis unit 44 declines channel sequence data slowly and fading channel sequence data merges, and issues Channel Processing.

In another embodiment, additionally providing a kind of software, this software is used for performing above-described embodiment and the most real Execute the technical scheme described in mode.

In another embodiment, additionally providing a kind of storage medium, in this storage medium, storage has above-mentioned software, should Storage medium includes but not limited to: CD, floppy disk, hard disk, scratch pad memory etc..

Obviously, those skilled in the art should be understood that each module of the above-mentioned present invention or each step can be with general Calculating device realize, they can concentrate on single calculating device, or be distributed in multiple calculating device and formed Network on, alternatively, they can with calculate the executable program code of device realize, it is thus possible to by they store Performed by calculating device in the storage device, and in some cases, can perform with the order being different from herein shown The step gone out or describe, or they are fabricated to respectively each integrated circuit modules, or by the multiple modules in them or Step is fabricated to single integrated circuit module and realizes.So, the present invention is not restricted to the combination of any specific hardware and software.

The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for the skill of this area For art personnel, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, that is made any repaiies Change, equivalent, improvement etc., should be included within the scope of the present invention.

Claims (10)

1. the analogy method of a radio network information channel, it is characterised in that including:

Obtain the real-time fading channel sequence in outfield and the channel sequence that declines slowly；

According to the described fading channel sequence obtained and the described channel sequence real-time Simulation radio network information channel that declines slowly.

Method the most according to claim 1, it is characterised in that according to the described fading channel sequence obtained with described decline slowly Channel sequence real-time Simulation radio network information channel, including:

Described fading channel sequence and the described channel sequence that declines slowly are merged, forms channel script；

According to described channel script analog wireless networks channel.

Method the most according to claim 1 and 2, it is characterised in that the real-time fading channel sequence in described acquisition outfield and Slowly decline channel sequence, including:

Obtain the real-time fading channel argument sequence in outfield and the described channel sequence that declines slowly；

Described fading channel sequence is generated according to the described fading channel argument sequence obtained.

Method the most according to claim 3, it is characterised in that obtain the real-time fading channel argument sequence in outfield and described Slowly decline channel sequence, including:

Channel data according to outfield Real-time Collection obtains described fading channel argument sequence and the channel sequence that declines slowly.

Method the most according to claim 4, it is characterised in that described channel data includes:

Multiple-input and multiple-output MIMO type, longitude and latitude and outfield channel acquisition sequence.

6. the analog of a radio network information channel, it is characterised in that including:

Acquisition module, for obtaining the real-time fading channel sequence in outfield and the channel sequence that declines slowly；

Analog module, for according to the described fading channel sequence obtained and the described channel sequence real-time Simulation wireless network that declines slowly Channel.

Device the most according to claim 6, it is characterised in that described analog module, including:

Combining unit, for described fading channel sequence and the described channel sequence that declines slowly being merged, forms channel script；

Analogue unit, for according to described channel script analog wireless networks channel.

8. according to the device described in claim 6 or 7, it is characterised in that described acquisition module, including:

Acquiring unit, for obtaining the real-time fading channel argument sequence in outfield and the described channel sequence that declines slowly；

Signal generating unit, generates described fading channel sequence according to the described fading channel argument sequence obtained.

Device the most according to claim 8, it is characterised in that described acquiring unit, is additionally operable to according to outfield Real-time Collection Channel data obtain described fading channel argument sequence and the channel sequence that declines slowly.

Device the most according to claim 9, it is characterised in that described channel data includes following information:

Multiple-input and multiple-output MIMO type, longitude and latitude and outfield channel acquisition sequence.