CN205961093U - Wireless non - stadia gigabit ethernet transmission system based on 700MHz 1100MHz variable frequency - Google Patents
Wireless non - stadia gigabit ethernet transmission system based on 700MHz 1100MHz variable frequency Download PDFInfo
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Abstract
The utility model discloses a wireless non - stadia gigabit ethernet transmission system based on 700MHz 1100MHz variable frequency, including terminal equipment and headend equipment, terminal equipment includes a RF antenna, first two -way radio frequency power amplifier, first receiving and dispatching frequency conversion chip, first baseband data processing chip, ethernet function conversion module, many oral sexes are changed planes and a RJ45 interface, headend equipment includes the 2nd RF antenna, the two -way radio frequency power amplifier of second, channel selector, transmission path, 1000base switch, master control CPU and the 2nd RJ45 interface. The whole receiving and dispatching process of this ethernet transmission system is the TDD mode, and headend equipment includes a plurality of transmission path that comprise receiving and dispatching frequency conversion chip and baseband data processing chip, can enlarge data transmission's bandwidth so at double, only a transmission path is launching at one time, has avoided same frequency interference like this, multichannel ethernet data assemble under the coordination of 1000base switch.
Description
Technical field
This utility model is related to WiMAX Long Range Ethernet transmission technique field, and particularly one kind is based on 700MHz-
The wireless non line of sight gigabit Ethernet Transmission system of 1100MHz variable frequency.
Background technology
The wireless ethernet broadband transmission techniques applied in the market, are mainly based upon 2.4GHz and 5GHz and honeycomb
The frequency of the LTE that formula mobile phone uses.The frequency that these technology use is all relatively high, and advantage is signal stabilization, is subject to
Interference little, and less reception antenna can be used.But the shortcoming of this frequency is equally also obvious, because exceeding
The frequency of 1GHz is easy to by air, building, and plant absorption, so being unable to long range propagation.
China's cable television standards regulation, coaxial cable 860MHz bands below is used for broadcast television signal and transmits,
More than 860MHz frequency band does not all use, referred to as outband channel, and the transmission characteristic of outband channel is：The transmission characteristic of whole system exists
Less, about -20dB, in the bandwidth of 16MHz, frequency spectrum is almost flat for below 1.2GHz change.Arrive in 1.2GHz
Decline between 1.5GHz quickly, reach below -50dB to decay during 1.5GHz.Within 1.5GHz (especially within 1.2GHz)
Frequency range, than advantageous with being worth, 1.5GHz is decayed larger with super band, and mates difference, reflection is big, multipath is serious, exploitation
Relatively costly.
Utility model content
Based on this, for the problems referred to above it is necessary to propose a kind of wirelessly non-based on 700MHz-1100MHz variable frequency
Sighting distance gigabit Ethernet Transmission system, entirely the process of receiving and dispatching is TDD mode to this Ethernet Transmission system, and headend equipment includes by receiving
Send out frequency conversion chip and multiple transmission channels of base band data process chip composition, so can expand the band of data transfer at double
Wide；Launched in same time only one of which transmission channel, this avoid co-channel interference；The Ethernet data of multichannel exists
Converged under the coordination of 1000base switch.
The technical solution of the utility model is：A kind of wireless non line of sight gigabit based on 700MHz-1100MHz variable frequency
Ethernet Transmission system, including terminal unit and headend equipment；
Described terminal unit includes a RF antenna, the first bi-directional RF power amplifier, the first transmitting-receiving frequency conversion chip, the first base band
Data processing chip, ethernet feature modular converter, many mouth switchs and a RJ45 interface；The input of a described RF antenna
End and outfan are connected with the first outfan of described first bi-directional RF power amplifier and first input end respectively, and described first is two-way
Second input of radio-frequency (RF) power amplification and the second outfan the first outfan and first with the described first transmitting-receiving frequency conversion chip respectively
Input connects, described first transmitting-receiving the second input of frequency conversion chip and the 3rd input respectively with described first base band data
First outfan of process chip and the second outfan connect, the second outfan of described first transmitting-receiving frequency conversion chip and the 3rd defeated
Go out end to be connected with the first input end of described first base band data process chip and the second input respectively, described first base band number
According to the 3rd input of process chip and the 3rd outfan respectively with the first outfan of described ethernet feature modular converter and
First input end connects, the second input of described ethernet feature modular converter and the second outfan respectively with described many oral sexes
The first outfan changed planes and first input end connect, the second input of described many mouth switchs and the second outfan respectively with
The outfan of a described RJ45 interface and input connect；
Described headend equipment include the 2nd RF antenna, the second bi-directional RF power amplifier, channel to channel adapter, transmission channel,
1000base switch, master cpu and the 2nd RJ45 interface；Described transmission channel includes the second transmitting-receiving frequency conversion chip and the second base
Band data processing chip；Described 2nd RF antenna is identical with a described RF antenna structure, described second bi-directional RF power amplifier with
Described first bi-directional RF power amplifier structure is identical, and described second transmitting-receiving frequency conversion chip and described first receives and dispatches frequency conversion chip structure phase
With described second base band data process chip is identical with described first base band data process chip structure, and described 2nd RJ45 connects
Mouth is identical with a described RJ45 interface structure；The input of described 2nd RF antenna and outfan are two-way with described second respectively
First outfan of radio-frequency (RF) power amplification and first input end connect, the second input of described second bi-directional RF power amplifier and second defeated
Go out end to be connected with the first outfan of described channel to channel adapter and first input end respectively, the second input of described channel to channel adapter
End and the second outfan are connected with the first outfan of the described second transmitting-receiving frequency conversion chip and first input end respectively, and described second
Second input of transmitting-receiving frequency conversion chip and the first output with described second base band data process chip respectively of the 3rd input
End and the second outfan connect, and described second transmitting-receiving the second outfan of frequency conversion chip and the 3rd outfan are respectively with described second
The first input end of base band data process chip and the second input connect, and the 3rd of described second base band data process chip is defeated
Enter end and the 3rd outfan is connected with the first outfan of described 1000base switch and first input end respectively, described
Second input of 1000base switch and the second outfan are connected with the outfan of described master cpu and input respectively,
3rd outfan of described 1000base switch and the 3rd input respectively with the input of described 2nd RJ45 interface and defeated
Go out end to connect.
During terminal unit receipt signal, by a RF antenna receiving signal, then by the first bi-directional RF power amplifier to letter
Number processed and the signal after processing is sent to the first transmitting-receiving frequency conversion chip, the first transmitting-receiving frequency conversion chip is carried out to signal
After LNA processing and amplifying, export intermediate-freuqncy signal after down coversion, then gathered and pass through by the first base band data process chip
After FFT, demodulated the data of modulation by internal arithmetic, then pass sequentially through ethernet feature modulus of conversion after MAC is processed
Block, many mouth switchs and RJ45 interface output；
During terminal unit transmission signal, the signal of Ethernet sequentially passes through a RJ45 interface, many mouth switchs and ether
The first base band data process chip is entered, the first base band data process chip carries out MAC electricity to data after net function change-over module
After the coded treatment of road, carry out QPSK and QAM modulation, through inner transformation output OFDM waveform, be then transferred to the first transmitting-receiving and become
Frequency chip, is obtained 700MHz-1100MHz signal in transmitting-receiving frequency conversion chip upconversion process, is entered by the first bi-directional RF power amplifier
Row is exported by a RF antenna after amplifying.
During headend equipment receipt signal, by the 2nd RF antenna receiving signal, then by the second bi-directional RF power amplifier to letter
Number processed, by channel to channel adapter, behind selector channel, be sent to the second transmitting-receiving frequency conversion chip of respective channel, the second transmitting-receiving
Frequency conversion chip carries out after LNA processing and amplifying to signal, exports intermediate-freuqncy signal, then by the second base band data after down coversion
Reason chip gathers and after FFT, is demodulated the data of modulation by internal arithmetic, then passes sequentially through after MAC is processed
1000base switch and the output of the 2nd RJ45 interface, 1000base switch works under the control of master cpu；
During headend equipment transmission signal, after the signal of Ethernet sequentially passes through the 2nd RJ45 interface and 1000base switch
Enter the second base band data process chip, the second base band data process chip carries out to data, after MAC circuit coded treatment, carrying out
QPSK and QAM modulation, through inner transformation output OFDM waveform, are then transferred to the second transmitting-receiving frequency conversion chip, in the second transmitting-receiving
Frequency conversion chip upconversion process obtains 700MHz-1100MHz signal, under channel to channel adapter selects, by the second bi-directional RF
Power amplifier is exported by the 2nd RF antenna after amplifying；
Ethernet data is transformed into and can be received and dispatched by RF antenna by base band data process chip and transmitting-receiving frequency conversion chip
Wireless signal, had both solved the problems, such as that Long Range Ethernet transmission wiring difficulty was big, had saved wiring cost again.
Preferably, described headend equipment includes multiple being connected with described channel to channel adapter and 1000base switch respectively
Transmission channel.
Headend equipment can be led to by the multiple transmission including the second transmitting-receiving frequency conversion chip and the second base band data process chip
Road is constituted, and so can expand the bandwidth of data transfer at double, headend equipment can be simultaneously connected with multiple terminal devices, and each is eventually
End equipment can carry out ethernet communication with headend equipment, and the Ethernet data of multichannel enters under the coordination of 1000base switch
Row converges.
Preferably, described first bi-directional RF power amplifier includes power amplifier and band filter, described power amplifier
Output frequency be 700MHz-1100MHz, the first input end of the outfan of described power amplifier and described band filter
Connect；Second input of described band filter is the first input end of described first bi-directional RF power amplifier, described band logical filter
First outfan of ripple device is the first outfan of described first bi-directional RF power amplifier, the second outfan of described band filter
For the second outfan of described first bi-directional RF power amplifier, the first input end of described power amplifier is described first two-way to penetrate
Second input of frequency power amplifier.
In terms of covering, the scope of current 700MHz frequency range has signal from 698MHz～806MHz low-frequency range higher frequency band
The advantages characteristic such as propagation loss is low, covering is wide, penetration power is strong, is suitable for the network coverage on a large scale, can reduce networking cost.For example
Under rural environment, for TD-LTE system, the 700MHz system covering radius of low-frequency range be about 2.6GHz system 3～
4 times, area coverage is about 10 times of 2.6GHz system.Under outdoor environment, the average signal strength of 700MHz system compares 2.6GHz
The strong about 20dB of system.
The frequency of 700MHz is more satisfactory frequency, and 700MHz frequency range is in low-frequency range, have signal cover wide, penetrate
The characteristic such as power is strong, is suitable for the network coverage on a large scale, networking cost is low, therefore by internationally recognized for " digital bonus " frequency range.
Bi-directional RF power amplifier is worked using TDD mode, one antenna of transmit-receive sharing, using TDD working method because its just like
Lower feature：
1. do not need paired frequency, can be using various frequency resources it is adaptable to asymmetric up-downgoing data transfer be fast
Rate, is particularly well-suited to the data service of IP type；
2. in same frequency, the symmetry characteristic of radio wave propagation makes it easier to uplink and downlink works；
3. equipment cost is relatively low, lower 20%-50% than FDD system.With new techniques such as smart antennas, reach raising performance,
The purpose of reduces cost.
Preferably, described first transmitting-receiving frequency conversion chip includes HINOC-PA (power amplifier) for sending signal, uses
In the HINOC-LNA (low-noise amplifier) of receipt signal, a Mixer (frequency mixer), the 2nd Mixer, the 3rd Mixer,
Four Mixer, PLL local oscillators, the first wave filter, the second wave filter, the 3rd wave filter, the 4th wave filter；Described HINOC-PA's
Outfan is the first outfan of described first transmitting-receiving frequency conversion chip, and the input of described HINOC-LNA is described first transmitting-receiving
The first input end of frequency conversion chip；The first input end of described HINOC-PA and the second input connect respectively a Mixer and
The outfan of the 2nd Mixer, the first input end of a described Mixer and the 2nd Mixer connects the first wave filter and respectively
Two filter outputs, the input of described first wave filter and the second wave filter is respectively the second of the first transmitting-receiving frequency conversion chip
Input and the 3rd input；First outfan of described HINOC-LNA and the second outfan connect the 3rd Mixer and respectively
The first input end of four Mixer, the outfan of described 3rd Mixer and the 4th Mixer connects the 3rd wave filter and the 4th respectively
The second of the input of wave filter, described 3rd wave filter and the 4th filter output respectively first transmitting-receiving frequency conversion chip is defeated
Go out end and the 3rd outfan；First outfan of described PLL local oscillator, the second outfan, the 3rd outfan and the 4th outfan
Connect a described Mixer, the 2nd Mixer, second input of the 3rd Mixer and the 4th Mixer respectively.
Transmitting-receiving frequency conversion chip is used for digital mixing, is worked using TDD mode, has reception and emission function；Transmitting-receiving frequency conversion
Chip is used for receiving the signal that bi-directional RF power amplifier is sent, and down coversion exports intermediate-freuqncy signal to base after internal LNA amplifies
Band data processing chip；Transmitting-receiving frequency conversion chip is additionally operable to receive the signal that base band data process chip is sent, and becomes on PA
Frequency processes after obtaining 700MHz-1100MHz signal and is sent to bi-directional RF power amplifier.
First, second wave filter is used for receiving the signal that base band data process chip is sent, by first, second Mixer
Amplified by PA after being mixed and be sent to bi-directional RF power amplifier after signal；After LNA receives the signal that bi-directional RF power amplifier is sent,
After amplifying by LNA, after the three, the 4th Mixer are processed, then send a signal to base band by the three, the 4th wave filter
Data processing chip.
Whole transmitting-receiving process is TDD mode, and headend equipment is in same time only one of which transmission channel by channel to channel adapter
Choose and launched, this avoid co-channel interference.
Preferably, described first base band data process chip includes D/A (digital/analog signal conversion), A/D (simulation/number
Word signal is changed), HINOC-PHY (physical layer), HINOC-MAC, Embeded CPU and SDRAM；First outfan of described D/A and
Second outfan is respectively the first outfan and second outfan of the first base band data process chip, and the first of described A/D is defeated
Enter end and the second input is respectively first input end and second input of the first base band data process chip, described D/A's
Input connects first outfan of HINOC-PHY, and the outfan of described A/D connects the first input end of HINOC-PHY, described
Second input of HINOC-PHY and the second outfan the first outfan and first input end with HINOC-MAC respectively, described
Second input of HINOC-MAC and the second outfan are connected with the first outfan of Embeded CPU and first input end respectively, institute
State the second input of Embeded CPU and the second outfan is respectively the 3rd input and the 3rd of the first base band data process chip
Outfan, the 3rd input of described Embeded CPU and the 3rd outfan are connected with the outfan of SDRAM and input respectively.
Ethernet data is converted into RF signal be transmitted, the problem of maximum wherein to be solved is exactly at base band data
The conversion of reason sum intermode, this utility model adopts the base band data process chip of independent research, completes ether by HINOC-MAC
The MAC process of network data, carries out physical transfer by HINOC-PHY, and carries out corresponding digital-to-analogue by D/A and A/D and modulus turns
Change.
The beneficial effects of the utility model are：
1st, by base band data process chip and transmitting-receiving frequency conversion chip, Ethernet data is transformed into and can be received and dispatched by RF antenna
Wireless signal, both solved the problems, such as that Long Range Ethernet transmission wiring difficulty was big, saved wiring cost again；
2nd, headend equipment can be by the multiple transmission including the second transmitting-receiving frequency conversion chip and the second base band data process chip
Passage is constituted, and so can expand the bandwidth of data transfer at double；
3rd, adopt the working method of TDD it is not necessary to paired frequency, various frequency resources can be used it is adaptable to asymmetric
Up-downgoing message transmission rate, be particularly well-suited to the data service of IP type；Uplink and downlink works in same frequency, radio wave propagation
Symmetry characteristic makes it easier to；Equipment cost is relatively low, lower 20%-50% than FDD system.With new techniques such as smart antennas, reach
Improve performance, the purpose of reduces cost
4th, use 700MHz-1100MHz frequency range, this frequency range is in low-frequency range, there is signal and cover the spies such as wide, penetration power is strong
Property, it is suitable for the network coverage on a large scale, networking cost is low；
5th, in the same time, headend equipment only one of which transmission channel is chosen by channel to channel adapter and is launched, and so keeps away
Exempt from co-channel interference, each terminal unit can carry out ethernet communication with headend equipment, and the Ethernet data of multichannel exists
Converged under the coordination of 1000base switch.
Brief description
Fig. 1 is the terminal structure schematic diagram of this utility model embodiment；
Fig. 2 is the front-end architecture schematic diagram of this utility model embodiment；
Brief description：1100- the first RF antenna, 1200- the first bi-directional RF power amplifier, 1201- band filter, 1202-
Power amplifier, 1300- first transmitting-receiving frequency conversion chip, 1301-HINOC-PA, 1302-HINOC-LNA, 1303- the first Mixer,
1304- the 2nd Mixer, 1305- the 3rd Mixer, 1306- the 4th Mixer, 1307-PLL local oscillator, 1308- first wave filter,
1309- second wave filter, 1310- the 3rd wave filter, 1311- the 4th wave filter, 1400- the first base band data process chip,
1401-D/A, 1402-A/D, 1403-HINOC-PHY, 1404-HINOC-MAC, 1405- Embeded CPU, 1406-SDRAM, 1500-
Ethernet feature modular converter, the many mouth switchs of 1600-, 1700- the RJ45 interface, 2100- the 2nd RF antenna, 2200-
Two bi-directional RF power amplifiers, 2300- second receives and dispatches frequency conversion chip, 2400- the second base band data process chip, 2500- channel selecting
Device, 2600-1000base switch, 2700- master cpu, 2800- the 2nd RJ45 interface.
Specific embodiment
Below in conjunction with the accompanying drawings embodiment of the present utility model is described in detail.
Embodiment
As shown in Figure 1 and Figure 2, a kind of wireless non line of sight gigabit Ethernet biography based on 700MHz-1100MHz variable frequency
Defeated system, including terminal unit and headend equipment；
Described terminal unit includes a RF antenna 1100, the first bi-directional RF power amplifier 1200, first receives and dispatches frequency conversion chip
1300th, the first base band data process chip 1400, ethernet feature modular converter 1500, many mouth switchs 1600 and a RJ45
Interface 1700；The input of a described RF antenna 1100 and outfan respectively with described first bi-directional RF power amplifier 1200
One outfan and first input end connect, and the second input of described first bi-directional RF power amplifier 1200 and the second outfan are respectively
It is connected with the first outfan of the described first transmitting-receiving frequency conversion chip 1300 and first input end, described first transmitting-receiving frequency conversion chip
1300 the second input and the 3rd input respectively with the first outfan of described first base band data process chip 1400 and
Second outfan connects, and described first transmitting-receiving the second outfan of frequency conversion chip 1300 and the 3rd outfan are respectively with described first
The first input end of base band data process chip 1400 and the second input connect, described first base band data process chip 1400
The 3rd input and the 3rd outfan defeated with the first outfan of described ethernet feature modular converter 1500 and first respectively
Enter end to connect, the second input of described ethernet feature modular converter 1500 and the second outfan are changed with described many oral sexes respectively
First outfan of machine 1600 and first input end connection, the second input of described many mouth switchs 1600 and the second outfan
It is connected with the outfan of a described RJ45 interface 1700 and input respectively；
Described headend equipment includes the 2nd RF antenna 2100, the second bi-directional RF power amplifier 2200, channel to channel adapter 2500, passes
Defeated passage, 1000base switch 2600, master cpu 2700 and the 2nd RJ45 interface 2800；Described transmission channel includes second
Transmitting-receiving frequency conversion chip 2300 and the second base band data process chip 2400；Described 2nd RF antenna 2100 and a described RF antenna
1100 structures are identical, and described second bi-directional RF power amplifier 2200 is identical with described first bi-directional RF power amplifier 1200 structure, described
Second transmitting-receiving frequency conversion chip 2300 is identical with the described first transmitting-receiving frequency conversion chip 1300 structure, and described second base band data processes core
Piece 2400 is identical with described first base band data process chip 1400 structure, described 2nd RJ45 interface 2800 and described first
RJ45 interface 1700 structure is identical；The input of described 2nd RF antenna 2100 and outfan respectively with described second bi-directional RF
First outfan of power amplifier 2200 and first input end connect, the second input of described second bi-directional RF power amplifier 2200 and the
Two outfans are connected with the first outfan of described channel to channel adapter 2500 and first input end respectively, described channel to channel adapter
2500 the second input and the second outfan the first outfan and first with the described second transmitting-receiving frequency conversion chip 2300 respectively
Input connects, described second transmitting-receiving the second input of frequency conversion chip 2300 and the 3rd input respectively with described second base band
First outfan of data processing chip 2400 and the second outfan connect, and the second of described second transmitting-receiving frequency conversion chip 2300 is defeated
Go out end and the 3rd outfan is connected with the first input end of described second base band data process chip 2400 and the second input respectively
Connect, the 3rd input of described second base band data process chip 2400 and the 3rd outfan are exchanged with described 1000base respectively
First outfan of machine 2600 and first input end connect, the second input of described 1000base switch 2600 and second defeated
Go out end to be connected with the outfan of described master cpu 2700 and input respectively, the 3rd of described 1000base switch 2600 is defeated
Go out end and the 3rd input is connected with the input of described 2nd RJ45 interface 2800 and outfan respectively.
During terminal unit receipt signal, by a RF antenna receiving signal, then by the first bi-directional RF power amplifier to letter
Number processed and the signal after processing is sent to the first transmitting-receiving frequency conversion chip, the first transmitting-receiving frequency conversion chip is carried out to signal
After LNA processing and amplifying, export intermediate-freuqncy signal after down coversion, then gathered and pass through by the first base band data process chip
After FFT, demodulated the data of modulation by internal arithmetic, then pass sequentially through ethernet feature modulus of conversion after MAC is processed
Block, many mouth switchs and RJ45 interface output；
During terminal unit transmission signal, the signal of Ethernet sequentially passes through a RJ45 interface, many mouth switchs and ether
The first base band data process chip is entered, the first base band data process chip carries out MAC electricity to data after net function change-over module
After the coded treatment of road, carry out QPSK and QAM modulation, through inner transformation output OFDM waveform, be then transferred to the first transmitting-receiving and become
Frequency chip, is obtained 700MHz-1100MHz signal in transmitting-receiving frequency conversion chip upconversion process, is entered by the first bi-directional RF power amplifier
Row is exported by a RF antenna after amplifying.
During headend equipment receipt signal, by the 2nd RF antenna receiving signal, then by the second bi-directional RF power amplifier to letter
Number processed, by channel to channel adapter, behind selector channel, be sent to the second transmitting-receiving frequency conversion chip of respective channel, the second transmitting-receiving
Frequency conversion chip carries out after LNA processing and amplifying to signal, exports intermediate-freuqncy signal, then by the second base band data after down coversion
Reason chip gathers and after FFT, is demodulated the data of modulation by internal arithmetic, then passes sequentially through after MAC is processed
1000base switch and the output of the 2nd RJ45 interface, 1000base switch works under the control of master cpu；
During headend equipment transmission signal, after the signal of Ethernet sequentially passes through the 2nd RJ45 interface and 1000base switch
Enter the second base band data process chip, the second base band data process chip carries out to data, after MAC circuit coded treatment, carrying out
QPSK and QAM modulation, through inner transformation output OFDM waveform, are then transferred to the second transmitting-receiving frequency conversion chip, in the second transmitting-receiving
Frequency conversion chip upconversion process obtains 700MHz-1100MHz signal, under channel to channel adapter selects, by the second bi-directional RF
Power amplifier is exported by the 2nd RF antenna after amplifying；
Ethernet data is transformed into and can be received and dispatched by RF antenna by base band data process chip and transmitting-receiving frequency conversion chip
Wireless signal, had both solved the problems, such as that Long Range Ethernet transmission wiring difficulty was big, had saved wiring cost again.
Wherein in an embodiment, described headend equipment include multiple respectively with described channel to channel adapter 2500 and
The transmission channel that 1000base switch 2600 connects.
Headend equipment can be led to by the multiple transmission including the second transmitting-receiving frequency conversion chip and the second base band data process chip
Road is constituted, and so can expand the bandwidth of data transfer at double, headend equipment can be simultaneously connected with multiple terminal devices, and each is eventually
End equipment can carry out ethernet communication with headend equipment, and the Ethernet data of multichannel enters under the coordination of 1000base switch
Row converges.
In another embodiment, described first bi-directional RF power amplifier 1200 includes power amplifier 1201 and band logical filter
Ripple device 1202, the output frequency of described power amplifier 1201 is 700MHz-1100MHz, described power amplifier 1201 defeated
Go out end to be connected with the first input end of described band filter 1202；Second input of described band filter 1202 is described
The first input end of the first bi-directional RF power amplifier 1200, the first outfan of described band filter 1202 is two-way for described first
First outfan of radio-frequency (RF) power amplification 1200, the second outfan of described band filter 1202 is described first bi-directional RF power amplifier
1200 the second outfan, the first input end of described power amplifier 1201 is the of described first bi-directional RF power amplifier 1200
Two inputs.
In terms of covering, the scope of current 700MHz frequency range has signal from 698MHz～806MHz low-frequency range higher frequency band
The advantages characteristic such as propagation loss is low, covering is wide, penetration power is strong, is suitable for the network coverage on a large scale, can reduce networking cost.For example
Under rural environment, for TD-LTE system, the 700MHz system covering radius of low-frequency range be about 2.6GHz system 3～
4 times, area coverage is about 10 times of 2.6GHz system.Under outdoor environment, the average signal strength of 700MHz system compares 2.6GHz
The strong about 20dB of system.
The frequency of 700MHz is more satisfactory frequency, and 700MHz frequency range is in low-frequency range, have signal cover wide, penetrate
The characteristic such as power is strong, is suitable for the network coverage on a large scale, networking cost is low, therefore by internationally recognized for " digital bonus " frequency range.
Bi-directional RF power amplifier is worked using TDD mode, one antenna of transmit-receive sharing, using TDD working method because its just like
Lower feature：
1. do not need paired frequency, can be using various frequency resources it is adaptable to asymmetric up-downgoing data transfer be fast
Rate, is particularly well-suited to the data service of IP type；
2. in same frequency, the symmetry characteristic of radio wave propagation makes it easier to uplink and downlink works；
3. equipment cost is relatively low, lower 20%-50% than FDD system.With new techniques such as smart antennas, reach raising performance,
The purpose of reduces cost.
In another embodiment, described first transmitting-receiving frequency conversion chip 1300 includes the HINOC- for sending signal
PA1301, for the HINOC-LNA1302 of receipt signal, a Mixer1303, the 2nd Mixer1304, the 3rd Mixer1305,
4th Mixer1306, PLL local oscillator 1307, the first wave filter 1308, the second wave filter 1309, the 3rd wave filter the 1310, the 4th
Wave filter 1311；The outfan of described HINOC-PA1301 is the first outfan of described first transmitting-receiving frequency conversion chip 1300, institute
The input stating HINOC-LNA1302 is the first input end of described first transmitting-receiving frequency conversion chip 1300；Described HINOC-
The first input end of PA1301 and the second input connect the outfan of a Mixer1303 and the 2nd Mixer1304, institute respectively
The first input end stating a Mixer1303 and the 2nd Mixer1304 connects the first wave filter 1308 and the second wave filter respectively
1309 outfans, the input of described first wave filter 1308 and the second wave filter 1309 is respectively the first transmitting-receiving frequency conversion chip
1300 the second input and the 3rd input；First outfan of described HINOC-LNA1302 and the second outfan connect respectively
Connect the first input end of the 3rd Mixer1305 and the 4th Mixer1306, described 3rd Mixer1305's and the 4th Mixer1306
Outfan connects the input of the 3rd wave filter 1310 and the 4th wave filter 1311, described 3rd wave filter 1310 and the 4th respectively
Wave filter 1311 outfan is respectively the second outfan and the 3rd outfan of the first transmitting-receiving frequency conversion chip 1300；Described PLL is originally
The first outfan, the second outfan, the 3rd outfan and the 4th outfan of device 1307 of shaking connects described first respectively
Mixer1303, the 2nd Mixer1304, second input of the 3rd Mixer1305 and the 4th Mixer1306.
Transmitting-receiving frequency conversion chip is used for digital mixing, is worked using TDD mode, has reception and emission function；Transmitting-receiving frequency conversion
Chip is used for receiving the signal that bi-directional RF power amplifier is sent, and down coversion exports intermediate-freuqncy signal to base after internal LNA amplifies
Band data processing chip；Transmitting-receiving frequency conversion chip is additionally operable to receive the signal that base band data process chip is sent, and becomes on PA
Frequency processes after obtaining 700MHz-1100MHz signal and is sent to bi-directional RF power amplifier.
First, second wave filter is used for receiving the signal that base band data process chip is sent, by first, second Mixer
Amplified by PA after being mixed and be sent to bi-directional RF power amplifier after signal；After LNA receives the signal that bi-directional RF power amplifier is sent,
After amplifying by LNA, after the three, the 4th Mixer are processed, then send a signal to base band by the three, the 4th wave filter
Data processing chip.
Whole transmitting-receiving process is TDD mode, and headend equipment is in same time only one of which transmission channel by channel to channel adapter
Choose and launched, this avoid co-channel interference.
In another embodiment, described first base band data process chip 1400 include D/A1401, A/D1402,
HINOC-PHY1403, HINOC-MAC1404, Embeded CPU 1405 and SDRAM1406；First outfan of described D/A1401 and
Second outfan is respectively the first outfan and second outfan of the first base band data process chip 1400, described A/D1402
First input end and the second input be respectively the first input end of the first base band data process chip 1400 and the second input
End, the input of described D/A1401 connects first outfan of HINOC-PHY1403, and the outfan of described A/D1402 connects
The first input end of HINOC-PHY1403, second input of described HINOC-PHY1403 and the second outfan respectively with
First outfan of HINOC-MAC1404 and first input end, second input of described HINOC-MAC1404 and the second output
End is connected with the first outfan of Embeded CPU 1405 and first input end respectively, the second input of described Embeded CPU 1405 with
Second outfan is respectively the 3rd input and the 3rd outfan of the first base band data process chip 1400, described embedded
3rd input of CPU1405 and the 3rd outfan are connected with the outfan of SDRAM1406 and input respectively.
Embodiment described above only have expressed specific embodiment of the present utility model, and its description is more concrete and detailed,
But therefore can not be interpreted as the restriction to this utility model the scope of the claims.It should be pointed out that it is common for this area
For technical staff, without departing from the concept of the premise utility, some deformation can also be made and improve, these all belong to
In protection domain of the present utility model.
Claims (5)
1. a kind of wireless non line of sight gigabit Ethernet Transmission system based on 700MHz-1100MHz variable frequency, its feature exists
In including terminal unit and headend equipment；
Described terminal unit includes a RF antenna, the first bi-directional RF power amplifier, the first transmitting-receiving frequency conversion chip, the first base band data
Process chip, ethernet feature modular converter, many mouth switchs and a RJ45 interface；The input of a described RF antenna and
Outfan is connected with the first outfan of described first bi-directional RF power amplifier and first input end respectively, described first bi-directional RF
Second input of power amplifier and the first outfan and the first input with the described first transmitting-receiving frequency conversion chip respectively of the second outfan
End connects, and the second input of described first transmitting-receiving frequency conversion chip and the 3rd input are processed with described first base band data respectively
First outfan of chip and the second outfan connect, and described first receives and dispatches the second outfan and the 3rd outfan of frequency conversion chip
It is connected with the first input end of described first base band data process chip and the second input respectively, at described first base band data
3rd input of reason chip and the 3rd outfan the first outfan and first with described ethernet feature modular converter respectively
Input connects, the second input of described ethernet feature modular converter and the second outfan respectively with described many mouth switchs
The first outfan and first input end connect, the second input of described many mouth switchs and the second outfan respectively with described
The outfan of the first RJ45 interface and input connect；
Described headend equipment includes the 2nd RF antenna, the second bi-directional RF power amplifier, channel to channel adapter, transmission channel, 1000base
Switch, master cpu and the 2nd RJ45 interface；Described transmission channel is included at the second transmitting-receiving frequency conversion chip and the second base band data
Reason chip；Described 2nd RF antenna is identical with a described RF antenna structure, described second bi-directional RF power amplifier and described first
Bi-directional RF power amplifier structure is identical, and described second transmitting-receiving frequency conversion chip is identical with the described first transmitting-receiving frequency conversion chip structure, described
Second base band data process chip is identical with described first base band data process chip structure, described 2nd RJ45 interface with described
First RJ45 interface structure is identical；The input of described 2nd RF antenna and outfan respectively with described second bi-directional RF power amplifier
The first outfan and first input end connect, the second input of described second bi-directional RF power amplifier and the second outfan are respectively
It is connected with the first outfan of described channel to channel adapter and first input end, the second input of described channel to channel adapter and second
Outfan is connected with the first outfan of the described second transmitting-receiving frequency conversion chip and first input end respectively, described second transmitting-receiving frequency conversion
Second input of chip and the 3rd input the first outfan and second with described second base band data process chip respectively
Outfan connects, described second transmitting-receiving the second outfan of frequency conversion chip and the 3rd outfan respectively with described second base band data
The first input end of process chip and the second input connect, the 3rd input of described second base band data process chip and the
Three outfans are connected with the first outfan of described 1000base switch and first input end respectively, and described 1000base exchanges
Second input of machine and the second outfan are connected with the outfan of described master cpu and input respectively, described 1000base
3rd outfan of switch and the 3rd input are connected with the input of described 2nd RJ45 interface and outfan respectively.
2. based on the wireless non line of sight gigabit Ethernet transmission of 700MHz-1100MHz variable frequency it is according to claim 1
System is it is characterised in that described headend equipment includes multiple being connected with described channel to channel adapter and 1000base switch respectively
Transmission channel.
3. the wireless non line of sight gigabit Ethernet biography based on 700MHz-1100MHz variable frequency according to claim 1 or claim 2
Defeated system is it is characterised in that described first bi-directional RF power amplifier includes power amplifier and band filter, described power amplification
The output frequency of device is 700MHz-1100MHz, and the outfan of described power amplifier inputs with the first of described band filter
End connects；Second input of described band filter is the first input end of described first bi-directional RF power amplifier, described band logical
First outfan of wave filter is the first outfan of described first bi-directional RF power amplifier, the second output of described band filter
Hold the second outfan for described first bi-directional RF power amplifier, the first input end of described power amplifier is two-way for described first
Second input of radio-frequency (RF) power amplification.
4. the wireless non line of sight gigabit Ethernet biography based on 700MHz-1100MHz variable frequency according to claim 1 or claim 2
Defeated system is it is characterised in that described first transmitting-receiving frequency conversion chip includes HINOC-PA for sending signal, is used for receipt signal
HINOC-LNA, a Mixer, the 2nd Mixer, the 3rd Mixer, the 4th Mixer, PLL local oscillator, the first wave filter, second
Wave filter, the 3rd wave filter, the 4th wave filter；The outfan of described HINOC-PA is the first of described first transmitting-receiving frequency conversion chip
Outfan, the input of described HINOC-LNA is the first input end of described first transmitting-receiving frequency conversion chip；Described HINOC-PA's
First input end and the second input connect the outfan of a Mixer and the 2nd Mixer, a described Mixer and respectively
The first input end of two Mixer connects the first wave filter and the second filter output, described first wave filter and second respectively
The input of wave filter is respectively the second input and the 3rd input of the first transmitting-receiving frequency conversion chip；Described HINOC-LNA's
First outfan and the second outfan connect the first input end of the 3rd Mixer and the 4th Mixer, described 3rd Mixer respectively
Connect the input of the 3rd wave filter and the 4th wave filter, described 3rd wave filter and with the outfan of the 4th Mixer respectively
Four filter outputs are respectively the second outfan and the 3rd outfan of the first transmitting-receiving frequency conversion chip；Described PLL local oscillator
First outfan, the second outfan, the 3rd outfan and the 4th outfan connect respectively a described Mixer, the 2nd Mixer,
Second input of the 3rd Mixer and the 4th Mixer.
5. the wireless non line of sight gigabit Ethernet biography based on 700MHz-1100MHz variable frequency according to claim 1 or claim 2
Defeated system is it is characterised in that described first base band data process chip includes D/A, A/D, HINOC-PHY, HINOC-MAC, embedding
Enter CPU and SDRAM；First outfan of described D/A and the second outfan are respectively the first of the first base band data process chip
Outfan and the second outfan, the first input end of described A/D and the second input are respectively the first base band data process chip
First input end and the second input, the input of described D/A connects first outfan of HINOC-PHY, and described A/D's is defeated
Go out the first input end that end connects HINOC-PHY, second input of described HINOC-PHY and the second outfan respectively with
First outfan of HINOC-MAC and first input end, second input of described HINOC-MAC and the second outfan respectively with
First outfan of Embeded CPU and first input end connect, and the second input of described Embeded CPU and the second outfan are respectively
3rd input of the first base band data process chip and the 3rd outfan, the 3rd input of described Embeded CPU and the 3rd defeated
Go out end to be connected with the outfan of SDRAM and input respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620945682.8U CN205961093U (en) | 2016-08-25 | 2016-08-25 | Wireless non - stadia gigabit ethernet transmission system based on 700MHz 1100MHz variable frequency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620945682.8U CN205961093U (en) | 2016-08-25 | 2016-08-25 | Wireless non - stadia gigabit ethernet transmission system based on 700MHz 1100MHz variable frequency |
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| Publication Number | Publication Date |
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| CN205961093U true CN205961093U (en) | 2017-02-15 |
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ID=57979884
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106160758A (en) * | 2016-08-25 | 2016-11-23 | 四川泰立科技股份有限公司 | Wireless non line of sight gigabit Ethernet based on 700MHz 1100MHz variable frequency transmission system and transmission method thereof |
| CN111769847A (en) * | 2019-03-12 | 2020-10-13 | 大唐移动通信设备有限公司 | Radio wave receiving and transmitting method and system |
| WO2021063085A1 (en) * | 2019-09-30 | 2021-04-08 | 华为技术有限公司 | Communication apparatus |
-
2016
- 2016-08-25 CN CN201620945682.8U patent/CN205961093U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106160758A (en) * | 2016-08-25 | 2016-11-23 | 四川泰立科技股份有限公司 | Wireless non line of sight gigabit Ethernet based on 700MHz 1100MHz variable frequency transmission system and transmission method thereof |
| CN106160758B (en) * | 2016-08-25 | 2018-02-23 | 四川泰立科技股份有限公司 | Wireless non line of sight gigabit Ethernet Transmission system and its transmission method based on 700MHz 1100MHz variable frequencies |
| CN111769847A (en) * | 2019-03-12 | 2020-10-13 | 大唐移动通信设备有限公司 | Radio wave receiving and transmitting method and system |
| CN111769847B (en) * | 2019-03-12 | 2021-10-29 | 大唐移动通信设备有限公司 | Radio wave receiving and transmitting method and system |
| WO2021063085A1 (en) * | 2019-09-30 | 2021-04-08 | 华为技术有限公司 | Communication apparatus |
| US12047107B2 (en) | 2019-09-30 | 2024-07-23 | Huawei Technologies Co., Ltd. | Communication apparatus |
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