CN203387687U - Base-station device - Google Patents
Base-station device Download PDFInfo
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- CN203387687U CN203387687U CN201320488847.XU CN201320488847U CN203387687U CN 203387687 U CN203387687 U CN 203387687U CN 201320488847 U CN201320488847 U CN 201320488847U CN 203387687 U CN203387687 U CN 203387687U
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Abstract
The utility model discloses a base-station device. The base station adopts a time-division duplex and orthogonal frequency-division multiplexing TDD-OFDM communication technology. Both an uplink channel and a downlink channel are divided into a plurality of time slots. The base station includes a central processor, a first power supply, a second power supply and a data radio station. The first power supply supplies power to the central processor. The second power supply supplies power to the data radio station. The central processor is connected with the data radio station. The central processor is used for receiving and parsing signals sent by a server to a terminal in downlink communication and assembling the signals into an assigned frame structure according to a communication protocol between the base station and the terminal and sending the signals into the data radio station. The data radio station is used for receiving the signals of the assigned frame structure sent by the central processor in downlink communication and adding a frame header and a check bit to the signals and converting a frequency of the signals to which the frame header and the check bit are added so that the signals have a frequency different from the frequency of the signals in the uplink communication and sending the signals to different terminals through different time slots of a first antenna.
Description
Technical field
The utility model relates to the vehicle-carrying communication technical field, particularly relates to a kind of base station equipment.
Background technology
Base station equipment (base station) generally is deployed in the central area of its expectation coverage, for receiving the information of all vehicle-mounted terminal equipments (terminal) transmission in institute's coverage, such as perception informations such as video information, voice messagings, signal quality information, such as channel quality between terminal and described base station equipment etc.
In prior art, described base station equipment adopts the OFDM(OFDM, Orthogonal Frequency Division Multiplexing) technology, can realize the signal transmission of 2M bandwidth, but the frequency phase mutual interference of up-downgoing channel, can only adopt simplex, communication efficiency is lower.
The utility model content
A kind of base station equipment that the utility model provides, when solving in prior art that base station and terminal communicate, the frequency phase mutual interference of up-downgoing channel, can only adopt simplex, the technical problem that communication efficiency is lower.
The utility model provides following technical scheme:
A kind of base station equipment, described base station equipment comprises:
Described base station adopts time division duplex-OFDM TDD-OFDM communication technology, and the up-downgoing channel is divided into a plurality of time slots, and described base station comprises center processor, the first power supply, second source and data radio station;
Described the first power supply is powered to center processor, and second source is powered to data radio station, and center processor is connected with data radio station;
Center processor, for the signal received at downlink communication and resolution server sends to terminal, and be assembled into the designated frame structure according to the communication protocol between base station and terminal by described signal and send to data radio station;
Data radio station, signal for the designated frame structure in the transmission of downlink communication receiving center processor, described signal is increased to frame head and check digit, the signal that increases frame head and check digit is converted to different from signal frequency in uplink communication, by the first antenna, at different time-gap, is sent signal to different terminals.
Preferably, the centre frequency of described the first antenna is 229MHz.
Preferably, described data radio station is connected by the RS485 interface with described center processor.
Preferably, described base station equipment also comprises:
The microphone be connected by microphone interface with data radio station;
Data radio station, increased frame head and check digit to described voice signal, and the voice signal that increases frame head and check digit is carried out to the processing of frequency conversion, by the first antenna, at different time-gap, sends signal to different terminals.
Preferably, in uplink communication, described base station equipment comprises: the second antenna that receives the package signal that on different time-gap, different terminals sends, the corresponding package signal of each terminal, described package signal comprises vision signal, terminal positional information, terminal's status information, terminal iidentification IP and destination server address;
To the filter of described a plurality of package signal filterings, the frequency range of described a plurality of package signals is between 336MHz-344MHz;
Receive a plurality of package signals of device filtering after filtering by third antenna in up link, by the 4th antenna, the package signal of reception is transmitted to the circulator of described radio frequency module;
The radio frequency module is carried out frequency conversion to described package signal, obtains the baseband signal that centre frequency is 340MHz;
The FPGA module be connected with described radio frequency module, for described baseband signal is carried out to demodulation, and issue center processor in the mode of network by restituted signal by virtual network card technology;
Center processor is in the uplink communication module, specifically for signal after demodulation, be while controlling the class signal, directly signal is processed, if not, in the data after demodulation, add the base station location received by gps antenna, to data package again, according to the package signal obtained behind the package of the destination server address in signal again, send to successively in corresponding destination server.
Preferably, described circulator also comprises:
In downlink communication, the 5th antenna of the vision signal that the receiving center processor sends;
Described the 5th antenna is transmitted to filter by third antenna by described vision signal.
Preferably, described base station equipment also comprises: wifi interface, the fan of giving equipment cooling in described base station in the running of base station, the display device be connected with center processor.
Preferably, described center processor is the I.MX27 chip.
Preferably, the FPGA module adopts the XC3S5000 chip to realize the base band algorithm.
In the utility model, base station equipment adopts time division duplex-OFDM TDD-OFDM communication technology, the up-downgoing channel all can be divided into a plurality of time slots, therefore when downlink communication, the signal that center processor receives and resolution server sends to terminal, and according to the communication protocol between base station and terminal, described signal is assembled into to the designated frame structure and sends to data radio station; Data radio station increases frame head and check digit to described signal, by the signal that increases frame head and check digit, be converted to different from signal frequency in uplink communication, the signal of up-downgoing channel can the phase mutual interference, send signal to different terminals by the first antenna at different time-gap, can access a plurality of terminals, communication efficiency is greatly improved simultaneously.
The accompanying drawing explanation
The accompanying drawing the following describes is only some embodiment that put down in writing in the application, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The structural representation that Fig. 1 is a kind of base station equipment embodiment 1 of the utility model;
A kind of realization of embodiment under the practical application scene that Fig. 2 provides for the utility model;
Fig. 3 is the whole diagram of protocol architecture that the utility model is corresponding.
Embodiment
For making those skilled in the art can further understand feature of the present utility model and technology contents, below in conjunction with drawings and Examples, the technical solution of the utility model is described in detail, obviously, described embodiment is only a part of embodiment of the present utility model, rather than whole embodiment.Embodiment based in the utility model, those of ordinary skills are not making under the creative work prerequisite the every other embodiment obtained, and all belong to the scope of the utility model protection.
Shown in figure 1, the structural representation of a kind of base station equipment embodiment 1 provided for the utility model, base station equipment in the present embodiment is based on time division duplex-OFDM TDD-OFDM communication technology, so the up-downgoing channel all can be divided into a plurality of time slots, can access a plurality of terminals.Described base station equipment comprises center processor 101, the first power supply 102, second source 103 and data radio station 104;
Preferably, the voltage that described the first power supply 102 provides 15V to center processor 101, second source 103 provides the voltage of 12V to data radio station 104, and described data radio station can be connected by the RS485 interface with described center processor.
In downlink communication, center processor 101 is for the signal received at downlink communication and resolution server sends to terminal, and according to the communication protocol between base station and terminal, described signal is assembled into to the designated frame structure and sends to data radio station; After data radio station 104 receives the signal of the designated frame structure that center processor sends, described signal is increased to frame head and check digit, described frame head is for determining the original position of signal frame, described check digit is for the error correction of signal, the signal that then will increase frame head and check digit carries out frequency conversion, and data radio station sends signal to different terminal by the first antenna at different time-gap by the signal after frequency conversion.Preferably, the centre frequency of described the first antenna is 229MHz, and the first antenna can be integrated in data radio station and also can independently exist and be connected with data radio station, is not specifically limited here.
In the present embodiment, data radio station is converted to different from signal frequency in uplink communication to signal, the signal of up-downgoing channel can the phase mutual interference, by the first antenna, at different time-gap, sends signal to different terminals, can access a plurality of terminals, communication efficiency is greatly improved simultaneously.Prior art general power amplifier that adopts in base station equipment is realized descending communication, and cost is higher, and adopts data radio station further can also reduce the cost of whole base station equipment.
On the basis of embodiment 1, further, described base station equipment can also comprise the microphone be connected by microphone interface with data radio station, in downlink communication, can pass through described microphone input speech signal, data radio station is processed described voice signal, and described voice signal is increased to frame head and check digit, and the voice signal that will increase frame head and check digit carries out frequency conversion, data radio station sends to terminal by the voice signal after frequency conversion by the first antenna.
Above content has been made specific descriptions to the downlink communication of base station equipment, for a complete base station equipment, need to possess uplink and downlink communication simultaneously, below the uplink communication of base station equipment is introduced, concrete, in uplink communication, described base station comprises:
Receive the second antenna of the package signal that on different time-gap, different terminals sends, the corresponding package signal of each terminal, described package signal comprises vision signal, terminal positional information, terminal's status information, terminal iidentification IP and destination server address; The second antenna in described base station sends to filter by a plurality of package signals, the noise signal of described filter filtering a plurality of package signal intermediate frequency rate outside target frequency, described target frequency refers in frequency centered by 340MHz, bandwidth is the frequency within 8M, filter sends to circulator by the signal after filtering clutter, the third antenna of described circulator receives by the output signal after the filter filtering clutter, and by the 4th antenna, described output signal is forwarded to the radio frequency module.
RF(Radio Frequency, radio frequency) module is carried out frequency conversion to described output signal, obtain the baseband signal that centre frequency is 340MHz, then FPGA module (the Field-Programmable Gate Array be connected with described radio frequency module, field programmable gate array) described baseband signal is carried out to demodulation, and in the mode of network, restituted signal is issued to center processor by virtual network card technology, center processor is separated package operation to described restituted signal, and according to the sign that unpacks a plurality of terminals in rear signal and data type, the data after unpacking are processed accordingly, described terminal iidentification is the IP address that network center is terminal distribution, described processing comprises: center processor carries out the judgement of terminal iidentification successively to described a plurality of terminals, if terminal corresponding to described sign be not in the coverage of described base station, center processor abandons the data after unpacking, if terminal corresponding to described sign is in the coverage of described base station, the center processor judgement unpacks whether the data type of rear signal is to control the class signal, if, center processor is directly processed the signal after described unpacking, if not, center processor carries out package again by the base station location of the data after described unpacking and gps antenna reception, to obtain a plurality of new package signals, and after inciting somebody to action again package successively according to the destination server address in signal, signal sends in corresponding destination server by the wifi interface.
If described base station will forward vision signal to terminal, need to be in downlink communication, by center processor, described vision signal is sent to circulator, the described vision signal of the 5th antenna reception in circulator, circulator is transmitted to filter by third antenna by described vision signal, filter carries out filtering to described vision signal, and sends to terminal by the second antenna.
Further, in actual applications, described base station can also comprise fan, display device, described fan can be given the cooling of described base station in the running of described base station, described display device is for the signal to noise ratio of the positional information that shows a plurality of terminals and the terminal signaling received, the state information of base station inner each device of when operation, the temperature of each device of inside etc. while move such as base station.
Shown in Fig. 2 and Fig. 3, be respectively that a kind of under the practical application scene of embodiment that the utility model provides realizes, whole diagram of protocol architecture.Wherein, center processor can adopt the I.MX27 chip of freescale company to realize, described center processor can be controlled the operation of whole base station, such as, the control of display device, closing etc. of wifi interface, the FPGA module can adopt the XC3S5000 chip to realize the base band algorithm, in actual applications, adopt the TDD-OFDM algorithm, if will be divided into 32 time slots 1 second, and 32 time slots can carry out independently transfer of data, when data volume is larger, can give a terminal by every 4 time slot allocation in 32 time slots, reserved 4 time slots are as the passage of base-station transmission control signal, described base station can receive 7 tunnel vision signals simultaneously, can be manually or change automatically the distribution of time slot by described display device, in addition, the positional information of the terminal that receives can be shown by display device, the real-time monitoring of realization to terminal location.
Realized sending to terminal the purpose that voice signal reaches terminal and network center's two-way call by the microphone interface of data radio station in addition, can realize the trunking communication of voice simultaneously by data radio station.General descending amount of communication data is all very little, only is used for transmitting control command and low volume data, so adopt the small part time slot will save to a great extent bandwidth to the down channel transmitted signal, realizes optimized cost performance.
Network center can be IP address of each terminal distribution, in uplink communication, signal for a plurality of terminals that receive at different time-gap, different terminals all can be distinguished by the IP address of terminal by base station and network center, if a destination server is received the vision signal of a plurality of terminals, described destination server can be distinguished a plurality of terminal signalings according to the IP address of terminal, and a plurality of videos are shown; Simultaneously, destination server can obtain the channel quality between a plurality of terminals and base station, and transmits control signal to terminal by the channel quality obtained, and described channel quality can recently be weighed by noise.
Being switched to example with the destination server control terminal describes, if the noise of certain terminal is smaller, be that the direct channel quality in terminal and base station is poor, destination server corresponding to described certain terminal is according to the station list of its management with unpack counterpart terminal IP information in signal, in downlink communication, issuing control signal controls in another base station that described terminal is switched to channel quality better and the described terminal of distance is nearer, the process that specifically issues of control signal can reference example 1 in the realization of downlink communication, repeat no more herein, the mode that wherein server obtains channel quality comprises: reference example 1, center processor is to unpacking signal again during package, can in unpacking signal, add the channel quality information between terminal and base station, like this after the data of server after the package again that receives the base station forwarding, just can judge the channel quality between a plurality of terminals and base station, in addition, server can be by itself calculating the channel quality between a plurality of terminals and base station.In the situation that between terminal and base station, channel quality is poor, server can be switched to channel quality by described terminal and communicate on channel preferably, realizes the switching of terminal between different base station.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in the protection range of utility model.
Claims (9)
1. a base station equipment, it is characterized in that, described base station adopts time division duplex-OFDM TDD-OFDM communication technology, and the up-downgoing channel is divided into a plurality of time slots, and described base station comprises center processor, the first power supply, second source and data radio station;
Described the first power supply is powered to center processor, and second source is powered to data radio station, and center processor is connected with data radio station;
Center processor, for the signal received at downlink communication and resolution server sends to terminal, and be assembled into the designated frame structure according to the communication protocol between base station and terminal by described signal and send to data radio station;
Data radio station, signal for the designated frame structure in the transmission of downlink communication receiving center processor, described signal is increased to frame head and check digit, the signal that increases frame head and check digit is converted to different from signal frequency in uplink communication, by the first antenna, at different time-gap, is sent signal to different terminals.
2. base station equipment according to claim 1, is characterized in that, the centre frequency of described the first antenna is 229MHz.
3. base station equipment according to claim 1, is characterized in that, described data radio station is connected by the RS485 interface with described center processor.
4. base station equipment according to claim 1, is characterized in that, described base station equipment also comprises:
The microphone be connected by microphone interface with data radio station;
Data radio station, increased frame head and check digit to voice signal, and the described voice signal that increases frame head and check digit is carried out to the processing of frequency conversion, by the first antenna, at different time-gap, sends signal to different terminals.
5. base station equipment according to claim 1, it is characterized in that, in uplink communication, described base station equipment comprises: the second antenna that receives the package signal that on different time-gap, different terminals sends, the corresponding package signal of each terminal, described package signal comprises vision signal, terminal positional information, terminal's status information, terminal iidentification IP and destination server address;
To the filter of described a plurality of package signal filterings, the frequency range of described a plurality of package signals is between 336MHz-344MHz;
Receive a plurality of package signals of device filtering after filtering by third antenna in up link, by the 4th antenna, the package signal of reception is transmitted to the circulator of radio frequency module;
Described radio frequency module is carried out frequency conversion to described package signal, obtains the baseband signal that centre frequency is 340MHz;
The FPGA module be connected with described radio frequency module, for described baseband signal is carried out to demodulation, and issue center processor in the mode of network by restituted signal by virtual network card technology;
Center processor is in the uplink communication module, specifically for signal after demodulation, be while controlling the class signal, directly signal is processed, if not, in the data after demodulation, add the base station location received by gps antenna, to data package again, according to the package signal obtained behind the package of the destination server address in signal again, send to successively in corresponding destination server.
6. base station equipment according to claim 5, is characterized in that, described circulator also comprises:
In downlink communication, the 5th antenna of the vision signal that the receiving center processor sends;
Described the 5th antenna is transmitted to filter by third antenna by described vision signal.
7. base station equipment according to claim 1, is characterized in that, described base station equipment also comprises: wifi interface, the fan of giving equipment cooling in described base station in the running of base station, the display device be connected with center processor.
8. according to the described base station equipment of claim 1-7 any one, it is characterized in that, described center processor is the I.MX27 chip.
9. according to the described base station equipment of claim 1-7 any one, it is characterized in that, the FPGA module adopts the XC3S5000 chip to realize the base band algorithm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320488847.XU CN203387687U (en) | 2013-08-09 | 2013-08-09 | Base-station device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320488847.XU CN203387687U (en) | 2013-08-09 | 2013-08-09 | Base-station device |
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| CN203387687U true CN203387687U (en) | 2014-01-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320488847.XU Expired - Lifetime CN203387687U (en) | 2013-08-09 | 2013-08-09 | Base-station device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104936281A (en) * | 2015-06-12 | 2015-09-23 | 昭文科技（北京）有限公司 | GSM (Global System for Mobile Communications) base station, communication system and data transmission method |
| CN109698717A (en) * | 2018-12-26 | 2019-04-30 | 广州维德科技有限公司 | A kind of network-building method, signal-relay station and the system of signal-relay station common-frequency simulcasting |
| CN109963257A (en) * | 2017-12-25 | 2019-07-02 | 哈尔滨海能达科技有限公司 | The method and device of terminal switching base station under a kind of narrowband group system |
| CN111313926A (en) * | 2020-02-20 | 2020-06-19 | 中国人民解放军空军特色医学中心 | Time division duplex ad hoc network wireless communication device and communication method thereof |
-
2013
- 2013-08-09 CN CN201320488847.XU patent/CN203387687U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104936281A (en) * | 2015-06-12 | 2015-09-23 | 昭文科技（北京）有限公司 | GSM (Global System for Mobile Communications) base station, communication system and data transmission method |
| CN104936281B (en) * | 2015-06-12 | 2018-10-09 | 昭文科技（北京）有限公司 | The base stations GSM, communication system and data transmission method |
| CN109963257A (en) * | 2017-12-25 | 2019-07-02 | 哈尔滨海能达科技有限公司 | The method and device of terminal switching base station under a kind of narrowband group system |
| CN109698717A (en) * | 2018-12-26 | 2019-04-30 | 广州维德科技有限公司 | A kind of network-building method, signal-relay station and the system of signal-relay station common-frequency simulcasting |
| CN111313926A (en) * | 2020-02-20 | 2020-06-19 | 中国人民解放军空军特色医学中心 | Time division duplex ad hoc network wireless communication device and communication method thereof |
| CN111313926B (en) * | 2020-02-20 | 2021-03-02 | 中国人民解放军空军特色医学中心 | Time division duplex ad hoc network wireless communication device and communication method thereof |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Jiangsu Power Technology Co.,Ltd. Assignor: Wuxi Research Institute of Internet of Things Contract record no.: 2014320000404 Denomination of utility model: Antitheft method and antitheft system of base station equipment Granted publication date: 20140108 License type: Exclusive License Record date: 20140520 |
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| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190319 Address after: 214000 8/F, Gemini Building A, No. 18 Zhenze Road, Wuxi New District, Wuxi City, Jiangsu Province Patentee after: WSN HOLDING GROUP CO.,LTD. Address before: 214135 Gemini A Building, No. 18 Zhenze Road, New District, Wuxi City, Jiangsu Province, Wuxi National Software Park Patentee before: Wuxi Research Institute of Internet of Things |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190531 Address after: 214105 7th Floor, Building A, Xidong Chuangrong Building, 78 Danshan Road, Anzhen Street, Xishan District, Wuxi City, Jiangsu Province Patentee after: Wuxi Perception Gold Clothing Internet of Things Technology Co.,Ltd. Address before: 214000 8/F, Gemini Building A, No. 18 Zhenze Road, Wuxi New District, Wuxi City, Jiangsu Province Patentee before: WSN HOLDING GROUP CO.,LTD. |
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Granted publication date: 20140108 |
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| CX01 | Expiry of patent term |