CN101562472A - System and method for realizing mobile communication on high-speed motion apparatus - Google Patents
System and method for realizing mobile communication on high-speed motion apparatus Download PDFInfo
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- CN101562472A CN101562472A CNA2008100891797A CN200810089179A CN101562472A CN 101562472 A CN101562472 A CN 101562472A CN A2008100891797 A CNA2008100891797 A CN A2008100891797A CN 200810089179 A CN200810089179 A CN 200810089179A CN 101562472 A CN101562472 A CN 101562472A
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Abstract
The invention provides a system for realizing mobile communication on a high-speed motion apparatus which comprises a ground base station, a mobile terminal positioned on the high-speed motion apparatus, and a relay module, wherein the relay module arranged on the high-speed motion apparatus is used for enabling the mobile terminal to communicate with the ground base station through the relay module and amplifying and enhancing a signal provided to the mobile terminal. In addition, the invention also provides a method for realizing mobile communication on the high-speed motion apparatus. Therefore, the communication between the mobile terminal on the high-speed motion apparatus and the relay module on the high-speed motion apparatus is relatively static to guarantee reliable signal transmission under the poor channel condition in the high-speed motion.
Description
Technical field
The present invention relates to mobile communication system, more specifically, relate to the system and method for on high-speed motion apparatus, realizing mobile communication.
Background technology
Along with the development of mobile communication, the application of portable terminal more and more widely, performance is more and more superior, function also from strength to strength.High reliability is devoted in current research to mobile communication, high intelligence and and the intercommunication of network.The realization of the vision initial to the development of mobile communication " clog-free communication carried out with anyone in any at any time place " is within sight.But in some fields, mobile communication comprises geographical environment owing to be subjected to the restriction of various current conditions, weather conditions, and the intrinsic attribute of things own also has certain difficulty in the specific implementation, and performance can not reach regulation.Such as in the scene of bullet train, because the excessive velocities (the fastest now can reaching more than 400 kilometers/hour) of train, therefore the channel circumstance of radio communication changes very fast, therefore in the modulation and demodulation process, can not well estimate the situation of channel, the signal that causes sending can not be received the end reduction exactly, influenced communication quality, can't communicate when serious.
Along with the development of high-speed railway, the covering of high-speed railway is more and more wider.In China, opened the part high-speed railway in the recent period, and some high-speed railway is also in planning process.When the time comes, the speed of railway will be accelerated greatly, and capacity will increase greatly.The speed of existing motor train unit is more than 200 kilometers/hour, and the Beijing-Shanghai high speed speed per hour of planning will reach 300 kilometers even higher.The appearance of high-speed railway makes various commercial activitys become more and more convenient with trans-regional exchanging.And for the business people, information is exactly all, exchange place regardless of time, so the communication quality on the bullet train is just had higher requirement, but present stage, but there is certain problem with extraneous interchange in portable terminal in high-speed motion under certain some standard, can't reach the smooth and easy of communication.
The communicating by letter because the influence that Doppler effect and multipath disturb of portable terminal and base station on bullet train, signal produces frequency shift (FS), and multipath disturbs and becomes complicated, therefore produces very big signal attenuation and distortion, has influenced communication quality greatly.Particularly when speed ratio was bigger, the deterioration of communication quality was particularly evident.There have been a lot of researchs to be absorbed in how to change this phenomenon, how the reliability of inhibit signal in high-speed motion.Following solution is generally arranged:
1. eliminate the influence of Doppler effect.Mainly realize by frequency correction.The frequency correction that is about to skew is returned.
2. how the research multidiameter delay predicts multipath channel better, thereby accurately reduction sends signal, guarantees the reliability of signal transmission.
3. how the researching antenna technology makes antenna keep powerful power to send in high-speed motion, keeps the direct projection footpath at the volley.
These solutions all are absorbed in from sending and reception itself, by optimizing the characteristic of Receiver And Transmitter, strengthen the reliability that sends and receive.But, be that therefore influence is bigger concerning whole system in base station side or in the change of end side with optimize covering and the capacity that all has influence on network.
Summary of the invention
Consider the problems referred to above and make the present invention that for this reason, main purpose of the present invention is, a kind of system and method for realizing mobile communication on high-speed motion apparatus is provided.
According to an aspect of the present invention, a kind of system that realizes mobile communication on high-speed motion apparatus is provided, comprise ground base station and the portable terminal that is positioned on the high-speed motion apparatus, it also comprises: trunk module, be arranged on the high-speed motion apparatus, be used to make portable terminal to communicate, and the signal that will offer portable terminal is amplified and strengthens by trunk module and ground base station.
In addition, trunk module can be base station, little base station or repeater.
In addition, trunk module has antenna, and keeps the direct projection footpath between the antenna of the antenna of trunk module and ground base station.
In addition, the antenna of trunk module can be omnidirectional antenna.
In addition, the antenna of trunk module can be directional antenna, and directional antenna can rotate.
According to a further aspect in the invention, provide a kind of method that realizes mobile communication on high-speed motion apparatus, it may further comprise the steps: step S202 is arranged on trunk module on the high-speed motion apparatus; And step S204, trunk module receives the signal from ground base station, the signal that is received is amplified and strengthens the portable terminal that afterwards amplifying signal is sent on high-speed motion apparatus.
In addition, step S204 can also comprise: by trunk module the signal that the portable terminal on the high-speed motion apparatus sends is sent to ground base station.
In addition, trunk module can be base station, little base station or repeater.
In addition, trunk module has antenna, and keeps the direct projection footpath between the antenna of the antenna of trunk module and ground base station.
In addition, the antenna of trunk module can be omnidirectional antenna.
In addition, the antenna of trunk module can be directional antenna, and directional antenna can rotate.
By technique scheme, the communication between portable terminal on the high-speed motion apparatus and the trunk module on the high-speed motion apparatus is static relatively, has guaranteed reliable signal transmission under the channel condition abominable in high-speed motion.
Other features and advantages of the present invention will be set forth in the following description, and, partly from specification, become apparent, perhaps understand by implementing the present invention.Purpose of the present invention and other advantages can realize and obtain by specifically noted structure in the specification of being write, claims and accompanying drawing.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, and constitutes the part of specification, is used from explanation the present invention with embodiments of the invention one, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 shows the block diagram of realizing the system of mobile communication according to of the present invention on high-speed motion apparatus; And
Fig. 2 shows the flow chart of realizing the method for mobile communication according to of the present invention on high-speed motion apparatus.
Embodiment
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the present invention, and be not used in qualification the present invention.
Fig. 1 shows the block diagram of realizing the system of mobile communication according to of the present invention on high-speed motion apparatus.
With reference to Fig. 1, a kind of system that realizes mobile communication on high-speed motion apparatus is provided, comprise ground base station 101 and the portable terminal 103 that is positioned on the high-speed motion apparatus, it also comprises: trunk module 102, be arranged on the high-speed motion apparatus, be used to make portable terminal 103 to communicate, and the signal that will offer portable terminal 103 is amplified and strengthens by trunk module 102 and ground base station 101.
In addition, trunk module 102 can be base station, little base station or repeater.
In addition, trunk module 102 has antenna, and keeps the direct projection footpath between the antenna of the antenna of trunk module and ground base station.
In addition, the antenna of trunk module can be omnidirectional antenna.
In addition, the antenna of trunk module can be directional antenna, and directional antenna can rotate.
Fig. 2 shows the flow chart of realizing the method for mobile communication according to of the present invention on high-speed motion apparatus.
With reference to Fig. 2, a kind of method that realizes mobile communication on high-speed motion apparatus is provided, it may further comprise the steps: step S202 is arranged on trunk module on the high-speed motion apparatus; And step S204, trunk module receives the signal from ground base station, the signal that is received is amplified and strengthens the portable terminal that afterwards amplifying signal is sent on high-speed motion apparatus.
In addition, step S204 can also comprise: by trunk module the signal that the portable terminal on the high-speed motion apparatus sends is sent to ground base station.
In addition, trunk module can be base station, little base station or repeater.
In addition, trunk module has antenna, and keeps the direct projection footpath between the antenna of the antenna of trunk module and ground base station.
In addition, the antenna of trunk module can be omnidirectional antenna.
In addition, the antenna of trunk module can be directional antenna, and directional antenna can rotate.
High-speed motion refers to that in this article speed per hour surpasses 100 kilometers motion, comprises train, the vehicles such as automobile and aircraft.Main in this article is the particular content that example illustrates invention with the high-speed train.
Trunk module is set on the high-speed train, and this trunk module keeps and the communicating by letter of ground base station.Portable terminal on the train communicates through base station on this trunk module and the ground.The function of this trunk module is that the signal that portable terminal sent on the train is amplified and strengthens, with the decay of channel condition abominable in the compensated high-speed motion, by this high-power trunk module signal is sent to ground base station then to signal.
This trunk module can be a base station, little base station, perhaps repeater.
1. on bullet train, place base station or little base station
The effect of the base station on this bullet train is the signal that receives from portable terminal, and the reliable signal transmission of base station will be sent to ground base station by this base station from the signal of portable terminal on maintenance and the ground; And receive signal, and send portable terminal to from ground base station.
For the quality that keeps communicating by letter, base station on this bullet train and ground base station must keep reliable signal transmission.For reaching this purpose, must guarantee on the train that antenna for base station has the direct projection footpath on the antenna for base station and ground, guarantee signal transmission of maximum power with this.Two kinds of methods are mainly taked in assurance direct projection footpath: a kind of omnidirectional antenna that is to use, and can be to guarantee the mobile base station from the signal of all angles reception from ground base station; Another kind is that directional antenna is used in the mobile base station, but the rotation that keeps antenna, with the footpath of the direct projection between assurance and the ground base station.
2. on high-speed train, place the repeater
The basic function of repeater is exactly a radiofrequency signal power intensifier.The repeater by pickoff signals in the existing overlay area of donor antenna,, is transmitted into the signal of filtering once more after power amplifier amplifies and treats the overlay area carrying out fabulous isolation with logical outer signal by band pass filter in down link.In the uplink path, the signal of the portable terminal in the overlay area is transmitted into corresponding base station with same working method after by up amplification link processing, thereby reaches the signal transmission of base station and portable terminal.
The effect of the repeater on this bullet train is the signal that receives from portable terminal, signal is amplified and strengthens, and be sent to ground base station; Receive signal simultaneously, and send portable terminal to from ground base station.
For the quality that guarantees to communicate by letter, repeater on this bullet train and ground base station must keep reliable signal transmission.For reaching this purpose, must guarantee on the train that antenna for base station has the direct projection footpath on the discharging-directly station antenna and ground, guarantee signal transmission of maximum power with this.Two kinds of methods are mainly taked in assurance direct projection footpath: a kind of omnidirectional antenna that is to use, and can be to guarantee mobile repeater from the signal of all angles reception from ground base station; Another kind is that mobile repeater uses directional antenna, but the rotation that keeps antenna, with the footpath of the direct projection between assurance and the ground base station.
The repeater is simpler than architecture of base station, and function is more single, mainly plays the effect of power amplification and enhancing.And send signal increase because channel path is decayed in high-speed motion in the mobile communication, and having lost a part of power when arriving receiving terminal, this part power can be compensated by the power that amplify the repeater just, guarantees the reliable transmission of signal.
After adding trunk module between transmitting terminal and the receiving terminal, after signal sent from the portable terminal on the bullet train, signal can produce decay, was strengthened by signal behind the power amplifier of trunk module then, receiving terminal just can receive the signal of reinforcement like this, correct demodulation; When signal when the fixed base stations on ground sends, the signal that arrives on the train is fainter, can at first be received by trunk module, and signal power is amplified.Because keep the direct projection footpath between trunk module and the ground base station, communication each other is more powerful, by trunk module the signal that strengthens is sent to portable terminal then, and the communication between this moment portable terminal and the trunk module is static relatively, can reach good effect, guarantee reliable signal transmission under the channel condition abominable in high-speed motion with this.
Technique scheme not only ON TRAINS and also can how mobile object in office the communicating by letter of the portable terminal that is carrier and fixed base stations.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. a system that realizes mobile communication on high-speed motion apparatus comprises ground base station and the portable terminal that is positioned on the described high-speed motion apparatus, it is characterized in that, also comprises:
Trunk module is arranged on the described high-speed motion apparatus, is used to make described portable terminal to communicate by described trunk module and described ground base station, and the signal that will offer described portable terminal is amplified.
2. system according to claim 1 is characterized in that, described trunk module is base station, little base station or repeater.
3. system according to claim 1 is characterized in that trunk module has antenna, and keeps the direct projection footpath between the antenna of the antenna of described trunk module and described ground base station.
4. system according to claim 3 is characterized in that, the antenna of described trunk module is an omnidirectional antenna.
5. system according to claim 3 is characterized in that, the antenna of described trunk module is a directional antenna, and described directional antenna can rotate.
6 one kinds of methods that realize mobile communication on high-speed motion apparatus is characterized in that, may further comprise the steps:
Step S202 is arranged on trunk module on the described high-speed motion apparatus; And
Step S204, described trunk module receives the signal from ground base station, after the signal that is received is amplified amplifying signal is sent to the portable terminal that is arranged on the described high-speed motion apparatus.
7. method according to claim 6 is characterized in that, described step S204 also comprises:
By described trunk module the signal that the described portable terminal on the described high-speed motion apparatus sends is sent to described ground base station.
8 methods according to claim 7 is characterized in that, described trunk module is base station, little base station or repeater.
9. method according to claim 7 is characterized in that trunk module has antenna, and keeps the direct projection footpath between the antenna of the antenna of described trunk module and described ground base station.
10. method according to claim 9 is characterized in that, the antenna of described trunk module is an omnidirectional antenna.
11. method according to claim 10 is characterized in that, the antenna of described trunk module is a directional antenna, and described directional antenna can rotate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100891797A CN101562472A (en) | 2008-04-17 | 2008-04-17 | System and method for realizing mobile communication on high-speed motion apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100891797A CN101562472A (en) | 2008-04-17 | 2008-04-17 | System and method for realizing mobile communication on high-speed motion apparatus |
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| CNA2008100891797A Pending CN101562472A (en) | 2008-04-17 | 2008-04-17 | System and method for realizing mobile communication on high-speed motion apparatus |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103888195A (en) * | 2012-12-19 | 2014-06-25 | 北京信威通信技术股份有限公司 | Method for fixedly erecting terminal directional antenna |
| CN106899982A (en) * | 2015-12-21 | 2017-06-27 | 中兴通讯股份有限公司 | A kind of mobile device, mobile device control method and device |
| CN107566008A (en) * | 2017-08-10 | 2018-01-09 | 巽晨国际股份有限公司 | Millimeter wave high-amplitude wave device, millimeter wave Transmission system and millimeter wave transmission method |
| CN108615346A (en) * | 2017-05-05 | 2018-10-02 | 品尼高维斯塔有限责任公司 | Relay UAV system |
-
2008
- 2008-04-17 CN CNA2008100891797A patent/CN101562472A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103888195A (en) * | 2012-12-19 | 2014-06-25 | 北京信威通信技术股份有限公司 | Method for fixedly erecting terminal directional antenna |
| CN106899982A (en) * | 2015-12-21 | 2017-06-27 | 中兴通讯股份有限公司 | A kind of mobile device, mobile device control method and device |
| CN108615346A (en) * | 2017-05-05 | 2018-10-02 | 品尼高维斯塔有限责任公司 | Relay UAV system |
| CN107566008A (en) * | 2017-08-10 | 2018-01-09 | 巽晨国际股份有限公司 | Millimeter wave high-amplitude wave device, millimeter wave Transmission system and millimeter wave transmission method |
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Application publication date: 20091021 |