CN109818665A - Wireless signal expansion system and wireless signal extension head end and terminal - Google Patents
Wireless signal expansion system and wireless signal extension head end and terminal Download PDFInfo
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- CN109818665A CN109818665A CN201711145922.1A CN201711145922A CN109818665A CN 109818665 A CN109818665 A CN 109818665A CN 201711145922 A CN201711145922 A CN 201711145922A CN 109818665 A CN109818665 A CN 109818665A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The present invention provides a kind of wireless signal expansion system and wireless signal extension head end and terminal, and it includes: a first antenna that wireless signal, which extends head end, the downstream wireless signals sent for receiving an AP antenna；One first downlink is connected by a first switch with first antenna communication, including one first downlink signal amplifier；One first uplink is connected by first switch with first antenna communication, including one first uplink signal amplifier；One first power detection module, according to detect downstream wireless signals setting first switch connect the first downlink；The amplification factor of the first downlink signal amplifier and the first uplink signal amplifier is set separately according to preset head end amplification factor rule for first power detection module.Wireless signal is transparent to each overlay area by indoor coaxial network by the present invention, is then converted into 5.8G wireless signal and is sent to user, realizes the purpose of all standing in 5.8G WiFi signal room.
Description
Technical field
The invention belongs to wireless communication technology fields, are related to a kind of wireless signal transmission system, more particularly to a kind of nothing
Line signal extension system and wireless signal extension head end and terminal.
Background technique
Telecommunications till now, the mode of wireless access shows various modes, the broadband 2.6G, 3.5G and 5.8G
Wireless access is typical three kinds.Herein, we specially discuss lower 5.8G access way and 5.8G antenna.The wave of 5.8G
5.17 centimeters long, 5.8G is not special big since wavelength compares the influence that heavy rain declines.5.8G wireless transmitting system communication distance
Representative value about at 10 kilometers.5.8G is generally adopted by based on IP or based on the Radio Transmission Technology of circuit.IP-based
Technology signaling protocol is simple, realizes and is easy, and expense is low, and the availability of frequency spectrum is high, and type of business is more, and interface is simply unified, and upgrading is held
It easily, is the broadband wireless access scheme of world, particularly suitable for disconnected data transmission service；Technology based on circuit
Time delay is small, is suitable for carrying out traditional voice transfer, it can be difficult to realize Dynamic Bandwidth Allocation, and the availability of frequency spectrum is low, it is special
It is not suitable for the transmission services based on connection.
5.8G wireless technology is all mainly for solving the problems, such as the access from backbone network to the local network of users at present.5.8G being
ISM band, country do not carry out unified distribution, and the use limitation to the frequency point is not very strictly, mainly using point pair
The technology of point, user is mainly some medium and small enterprises.Since 5.8G frequency range teaches height, interference is small, has become wifi covering
Standard configuration.But the penetration capacity of 5.8G is but also an AP is difficult to look after each room of family or Administrative Area.
Summary of the invention
In view of the foregoing deficiencies of prior art, the purpose of the present invention is to provide a kind of wireless signal expansion system and
Wireless signal extends head end and terminal, and the penetration capacity for solving existing 5.8G wireless signal is weak, so that an AP is difficult to cover
The problem of each room of lid family or Administrative Area.
In order to achieve the above objects and other related objects, the present invention provides a kind of wireless signal extension head end, described wireless
Signal extension head end includes: a first antenna, for receiving the downstream wireless signals of AP antenna transmission；One first downlink chain
Road is connected by a first switch with first antenna communication, including one first downlink signal amplifier；One first uplink
Road is connected by the first switch with first antenna communication, including one first uplink signal amplifier；One first power
Detection module, according to detecting that the downstream wireless signals are arranged the first switch and connect first downlink；It is described
The first downlink signal amplifier and institute is set separately according to preset head end amplification factor rule in first power detection module
State the amplification factor of the first uplink signal amplifier.
In one embodiment of the invention, the wireless signal extends head end further include: a coaxial interface passes through one second
Switch is connected with first downlink or first uplink communication, for institute's wireless signal to be extended head end
Uplink and downlink wireless signal pass through a coaxial cable transmit；First power detection module is according to detecting that the downlink is wireless
Signal is arranged the second switch and connects first downlink.
In one embodiment of the invention, the preset head end amplification factor rule includes: the wireless signal extension
The amplification factor of the downstream wireless signals of head end are as follows: A1-Pdet1；Wherein, A1 be the wireless signal extend head end downlink without
For line signal in the output power of b2 point, Pdet1 is detection function of the downstream wireless signals in a point that the wireless signal extends head end
Rate；The b2 point is between first downlink and the second switch；The a point is the first power detection mould
The test point of block, between the first antenna and the first switch；The up-link wireless of the wireless signal extension head end
The amplification factor of signal are as follows: A2；A2 is the amplification factor for the up-link wireless signal that the wireless signal extends head end.
In one embodiment of the invention, the wireless signal extends head end further include: when the first power detection mould
When the changed power for the downstream wireless signals that block detects is greater than the first preset range more than the first preset time period, described first
Power detection module resets the first downlink signal amplifier and institute according to the preset head end amplification factor rule
State the amplification factor of the first uplink signal amplifier.
The present invention also provides a kind of wireless signals to extend terminal, and the wireless signal extension terminal includes: a duplexer, leads to
Coaxial links are crossed to be connected with wireless signal extension head end communication；One second downlink is connected with duplexer communication, wraps
Include one second downlink signal amplifier；One second uplink is connected with duplexer communication, including one second uplink signal
Amplifier；Second downlink signal is set separately according to preset terminal amplification factor rule in one second power detection module
The amplification factor of amplifier and the second uplink signal amplifier.
In one embodiment of the invention, second power detection module is according to detecting downlink signal setting described the
Two uplinks are opened.
In one embodiment of the invention, the wireless signal extension terminal includes: one second antenna, on described second
Communications uplink is connected, and is used for one up-link wireless signal of wireless receiving；One third antenna, with the second downlink communication phase
Even, for transmitting wirelessly the downlink signal.
In one embodiment of the invention, the preset terminal amplification factor rule includes: second power detection
Module calculates the decaying Att=A1-Pdet2 for obtaining the coaxial links, wherein A1 is that the wireless signal extends under head end
Row wireless signal b2 point output power, the b2 point be located at the wireless signal extension head end the first downlink and nothing
Between the second switch of line signal extension head end；Pdet2 is detection of the downlink signal in c point that the wireless signal extends terminal
Power；The c point is the test point of second power detection module, be located at the duplexer and second downlink it
Between；The amplification factor of the downstream wireless signals of the wireless signal extension terminal are as follows: B1-Pdet2；B1 is wireless signal expansion
Open up the downlink signal output power of terminal；The amplification factor of the up-link wireless signal of the wireless signal extension terminal are as follows: B2 <
Att and B2 < As；B2 is the fixed transmission power for the uplink signal that the wireless signal extends terminal；As is the duplexer
Isolation.
In one embodiment of the invention, the wireless signal extension terminal includes: when the power of the downlink signal becomes
When changing greater than the second preset range more than the second preset time period, second power detection module is according to the preset terminal
Amplification factor rule resets the amplification factor of the second downlink signal amplifier and the second uplink signal amplifier.
The present invention also provides a kind of wireless signal expansion system, the wireless signal expansion system includes: a wireless signal
Extend head end；An at least wireless signal extends terminal, extends head end communication with the wireless signal by coaxial links and is connected；Institute
Stating wireless signal extension head end includes: a first antenna, for receiving the downstream wireless signals of AP antenna transmission；Under one first
Line link is connected by a first switch with first antenna communication, including one first downlink signal amplifier；On one first
Line link is connected by the first switch with first antenna communication, including one first uplink signal amplifier；One first
Power detection module, according to detecting that the downstream wireless signals are arranged the first switch and connect first downlink；
The first downlink signal amplifier is set separately according to preset head end amplification factor rule in first power detection module
With the amplification factor of the first uplink signal amplifier；The wireless signal extension terminal includes: a duplexer, by coaxial
Link is connected with wireless signal extension head end communication；One second downlink is connected with duplexer communication, including one the
Two downlink signal amplifiers；One second uplink is connected with duplexer communication, including the amplification of one second uplink signal
Device；One second power detection module is set separately second downlink signal according to preset terminal amplification factor rule and amplifies
The amplification factor of device and the second uplink signal amplifier.
As described above, wireless signal expansion system of the present invention and wireless signal extension head end and terminal, have with
It is lower the utility model has the advantages that
Wireless signal is transparent to each overlay area by indoor coaxial network by the present invention, and it is wireless to be then converted into 5.8G
Signal is sent to user, realizes the purpose of all standing in 5.8G WiFi signal room.
Detailed description of the invention
Fig. 1 is a kind of realization structural block diagram of wireless signal expansion system described in the embodiment of the present invention.
Fig. 2 is a kind of realization structural schematic diagram that wireless signal described in the embodiment of the present invention extends head end.
Fig. 3 is a kind of realization structural schematic diagram that wireless signal described in the embodiment of the present invention extends terminal.
Fig. 4 is a kind of specific implementation structural schematic diagram of wireless signal expansion system described in the embodiment of the present invention.
Component label instructions
100 wireless signal expansion systems
200 wireless signals extend head end
210 first antennas
220 first downlinks
230 first uplinks
240 first power detection modules
250 first switches
260 second switches
270 coaxial interfaces
300 wireless signals extend terminal
310 duplexers
320 second downlinks
330 second uplinks
340 second power detection modules
350 second antennas
360 third antennas
Specific embodiment
Illustrate embodiments of the present invention below by way of specific specific example, those skilled in the art can be by this specification
Other advantages and efficacy of the present invention can be easily understood for disclosed content.The present invention can also pass through in addition different specific realities
The mode of applying is embodied or practiced, the various details in this specification can also based on different viewpoints and application, without departing from
Various modifications or alterations are carried out under spirit of the invention.
Please refer to attached drawing.It should be noted that only the invention is illustrated in a schematic way for diagram provided in the present embodiment
Basic conception, only shown in schema then with related component in the present invention rather than component count, shape when according to actual implementation
Shape and size are drawn, when actual implementation kenel, quantity and the ratio of each component can arbitrarily change for one kind, and its component cloth
Office's kenel may also be increasingly complex.
Below with reference to embodiment and attached drawing, the present invention is described in detail.
The invention proposes a kind of 5.8G frequency reducing schemes, and wireless signal is transparent to each covering by indoor coaxial network
Region is then converted into 5.8G signal and is sent to user, realizes the purpose of all standing in 5.8G WiFi signal room.
Shown in Figure 1, the embodiment of the present invention provides a kind of wireless signal expansion system, the wireless signal expansion system
100 include: wireless signal extension head end 200 and wireless signal extension terminal 300；The wireless signal extension terminal 300 passes through
Coaxial links are connected with wireless signal extension head end communication.The wireless signal expansion system 100 includes described at least one
Wireless signal extends head end 200, and wireless signal described in each lower band at least one of wireless signal extension head end 200 extends terminal
300.Such as: the first layer in A building has a 4 family residents, and each household resident is required to 1 wireless signal extension head end 200 of arrangement and extremely
Few 1 wireless signal extends terminal 300, wherein the setting number and the indoor room number of resident of wireless signal extension terminal 300
Correlation, in this way, each household resident is just able to achieve the indoor whole rooms of 5.8G WiFi signal covering of access.
Shown in Figure 2, the wireless signal extension head end 200 includes: a first antenna 210, one first downlink
220, one first uplink 230, one first power detection module 240, a first switch 250, a second switch 260, coaxially
Interface 270.
The first antenna 210 is used to receive the downstream wireless signals of AP antenna transmission；The downstream wireless signals are referred to as
For 5.8GWiFi signal.
First downlink 220 is connected by the first switch 250 with the first antenna 210 communication.It is described
First downlink 220 includes the first downlink signal amplifier 221.
First uplink 230 is connected by the first switch 250 with the first antenna 210 communication.It is described
First uplink 230 includes the first uplink signal amplifier 231.
First power detection module 240 is according to detecting that the first switch 250 is arranged in the downstream wireless signals
Connect first downlink 220；First power detection module is set respectively according to preset head end amplification factor rule
The amplification factor of the fixed first downlink signal amplifier 221 and the first uplink signal amplifier 231.
The coaxial interface 270 passes through the second switch 260 and first downlink 220 or first uplink
The communication of link 230 is connected, for by the uplink and downlink wireless signal of institute's wireless signal extension head end, (up-link wireless signal to be under
The general designation of row wireless signal) it is transmitted by a coaxial cable.
First power detection module 240 is according to detecting that the second switch 260 is arranged in the downstream wireless signals
Connect first downlink 220.In default setting, the first switch 250 and the second switch 260 with it is described on
The communication of line link 230 is connected；When first power detection module 240 has detected that the downstream wireless signals occur, institute
State the first power detection module 240 control the first switch 250 and the second switch 260 with the downlink 220
Communication is connected.
Such as: shown in Figure 4, the duplexer switch 1 (i.e. first switch) of head end (abbreviation of wireless signal extension head end)
Default position with switch 2 (i.e. second switch) is the receiving direction beaten in uplink.The power detection point of head end is placed on head end day
At a after line, before being located at switch 1.Due to the power asymmetric that head end uplink and downlink receives, head end receives the signal power of AP
(generally in -10~0dBm) is far longer than the signal power received from terminal.When the PD1 being located at a detect it is stable big
When power signal, illustrate that head end receives the signal of AP, duplexer switch 1 and 2 is switched to downlink simultaneously at this time, from AP signal
Pass through terminal；In the case of other, duplexer switch 1 and 2 is switched to uplink simultaneously, prepares to receive the signal that terminal uploads.
In one embodiment of this invention, the preset head end amplification factor rule includes: 1) the wireless signal expansion
Open up the amplification factor of the downstream wireless signals of head end are as follows: A1-Pdet1；Wherein, A1 is the downlink that the wireless signal extends head end
Wireless signal b2 point output power, A1 be typically set to it is fixed, such as: 10dBm；Pdet1 is the wireless signal extension header
Detection power of the downstream wireless signals at end in a point；The b2 point be located at first downlink and the second switch it
Between；The a point is the test point of first power detection module, between the first antenna and the first switch；
2) amplification factor of the up-link wireless signal of the wireless signal extension head end are as follows: A2；A2 is that the wireless signal extends head end
Up-link wireless signal amplification factor, be typically set to it is fixed, such as: 20dBm.The size of A2 directly affects the wireless signal
The power bracket for the signal that extension terminal can receive.
Such as: it is shown in Figure 4, when head end (abbreviation of wireless signal extension head end 200) powers on, it is located at head end antenna
After (i.e. first antenna 210), power detection point (i.e. a point) at a before receiving and dispatching amplifying circuit, PD1 (i.e. the first power detection module
240) start measuring signal intensity.If PD1 does not detect power signal or faint signal, illustrate that head end does not receive
To the signal of extraneous AP.The precondition of head end power detection is: the signal power that head end uplink and downlink receives be it is asymmetric,
The signal power (generally in -10~+10dBm) that head end is received from AP is far longer than head end, and from terminal, (i.e. wireless signal extends
Terminal 300) signal power (< -50dBm) that receives.If PD1 detects one section of stable power signal, illustrate that head end is opened
Beginning receives the signal of external world AP.PD1 sends the performance number (10- of signal according to the signal power Pdet1 and AP detected
16dBm), calculate Radio Link (i.e. wireless communication link between AP and head end) decays to 10-Pdet1.Head end obtains
It after Radio Link decaying, is provided according to head end amplification factor, sets the amplification factor of head end uplink and downlink.Head end amplification factor principle
It is: compensates part AP to head end without line attenuation, guaranteeing that head end downlink sends power at the b2 before coaxial inlet is 10dBm left
It is right.Signal power at PD1 (i.e. the first power detection module 240) periodic detection a, when signal power deviation is greater than+- 10dBm
And when more than 1s, terminal can reset uplink and downlink amplification factor according to amplification factor rule.
In one embodiment of this invention, the power of the downstream wireless signals detected when first power detection module
When variation is greater than the first preset range more than the first preset time period, first power detection module 240 is according to described default
Head end amplification factor rule reset the first downlink signal amplifier 221 and the first uplink signal amplifier
231 amplification factor.Wherein, first preset range and first preset time period can freely be set according to actual needs
It is fixed.
Shown in Figure 3, the wireless signal extension terminal 300 includes: a duplexer 310, one second downlink
320, one second uplink 330, one second power detection module 340, one second antenna 350, a third antenna 360.
The duplexer 310 extends the communication of head end 200 with a wireless signal by coaxial links and is connected.The i.e. described wireless communication
Number extension head end 200 and the wireless signal extension terminal 300 between be by coaxial links communication be connected.
Second downlink 320 is connected with the duplexer 310 communication；Second downlink 320 includes one
Second downlink signal amplifier 321.
Second uplink 330 is connected with the duplexer 310 communication；Second uplink 330 includes one
Second uplink signal amplifier 331.
Second downlink is set separately according to preset terminal amplification factor rule in second power detection module 340
The amplification factor of signal amplifier 321 and the second uplink signal amplifier 331.
Second power detection module 340 is according to detecting that downlink signal is arranged second uplink and opens.
Second antenna 350 is connected with second uplink 330 communication, sends for one user of wireless receiving
Up-link wireless signal.
The third antenna 360 is connected with second downlink 320 communication, for wirelessly sending out the downlink signal
Give user.
In one embodiment of this invention, the preset terminal amplification factor rule includes: 1) the wireless signal expansion
Open up the amplification factor of the downlink signal of terminal are as follows: B1-Pdet2；B1 is the downlink signal output that the wireless signal extends terminal
Power is typically set to fixation, such as: 0dBm；2) amplification factor of the up-link wireless signal of the wireless signal extension terminal are as follows:
B2 < Att and B2 < As；B2 is the fixed transmission power for the uplink signal that the wireless signal extends terminal；As is the duplexer
Isolation；Att=A1-Pdet2, Att are that second power detection module calculates the decaying for obtaining the coaxial links,
In, A1 is output power of the downstream wireless signals in b2 point that the wireless signal extends head end, and the b2 point is located at the nothing
Between the second switch of the first downlink and wireless signal the extension head end of line signal extension head end；Pdet2 is described wireless
Detection power of the downlink signal of signal extension terminal in c point；The c point is the test point of second power detection module,
Between the duplexer and second downlink.The preset terminal amplification factor rule can guarantee terminal not
Signal self-excitation can be generated.The isolation of the duplexer of terminal (abbreviation of wireless signal extension terminal) generally requires to be greater than 20dB,
More preferably greater than 40dB.Terminal amplification factor principle is: the coaxial attenuation (usually less than 30dB) at compensation division header end to terminal room,
Guarantee that the transmission power of user equipment downlink antenna (i.e. third antenna) is greater than 0dBm.PD2 (i.e. the second power detection module 340) is regular
The signal power for detecting the place c, when signal power deviation is greater than+- 10dBm and when more than 1s, terminal can be regular according to amplification factor
Reset uplink and downlink amplification factor.
It in one embodiment of this invention, is more than second when the changed power of the downlink signal is greater than the second preset range
When preset time period, second power detection module 340 resets institute according to the preset terminal amplification factor rule
State the amplification factor of the second downlink signal amplifier 331 and the second uplink signal amplifier 321.Wherein, described second is pre-
If range and second preset time period can freely be set according to actual needs.
Such as: shown in Figure 4, when terminal powers on, Vaa is in close state, and terminal uplink channel is closed.PD2 starts
The signal strength between terminal duplexer and user equipment downlink amplifying circuit at c is detected, if not detecting power signal
Or faint signal, illustrate that head end does not have signal to issue, then Vaa keeps closed state；If PD2 detect one section it is steady
Fixed power signal illustrates that head end starts to terminal transmission signal, and PD2 is according to the signal power size Pdet2 and head detected
The performance number (being fixed as 10dBm) issued is held, the decaying Att for calculating coaxial links is 10-Pdet2.Terminal calculates coaxial cable
Road is decayed after Att, is provided according to terminal amplification factor, the amplification factor of setting terminal uplink and downlink, while opening Vaa, is allowed eventually
Hold up-delivering signal.After terminal powers on, PD2 persistently detects the signal at c.When (such as larger than 1s) not at the appointed time by PD2
It can detect normal signal, terminal will close all amplifiers (i.e. the second downlink signal amplifier 321 and the second uplink letter
Number amplifier 331), stop amplifying circuit work, to realize that terminal uses as needed, achievees the purpose that using electricity wisely.
The present invention tests link attenuation using power detection techniques, according to head end and the amplification factor decision mechanism of terminal and
Link attenuation result determines the amplification factor of uplink and downlink signals, and head end duplexer switch handover mechanism is recycled to realize uplink and downlink signals
Communication；The power consumption of terminal is also saved using power detection techniques simultaneously.
The penetration capacity that the present invention solves existing 5.8G wireless signal is weak, so that an AP is difficult to cover family or office
Wireless signal is transparent to each overlay area by indoor coaxial network, then converted by the problem of each room in region
It is sent to user for 5.8G wireless signal, realizes the purpose of all standing in 5.8G WiFi signal room.
In conclusion the present invention effectively overcomes various shortcoming in the prior art and has high industrial utilization value.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology all without departing from the spirit and scope of the present invention, carries out modifications and changes to above-described embodiment.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should be covered by the claims of the present invention.
Claims (10)
1. a kind of wireless signal extends head end, which is characterized in that the wireless signal extends head end and includes:
One first antenna, for receiving the downstream wireless signals of AP antenna transmission；
One first downlink is connected by a first switch with first antenna communication, including one first downlink signal is put
Big device；
One first uplink is connected by the first switch with first antenna communication, including one first uplink signal
Amplifier；
One first power detection module, according to detecting that the downstream wireless signals are arranged the first switch and connect described first
Downlink；First power detection module is set separately first downlink according to preset head end amplification factor rule and believes
The amplification factor of number amplifier and the first uplink signal amplifier.
2. wireless signal according to claim 1 extends head end, which is characterized in that the wireless signal extension head end also wraps
It includes:
One coaxial interface is connected by a second switch with first downlink or first uplink communication, is used
It is transmitted in by the uplink and downlink wireless signal of institute's wireless signal extension head end by a coaxial cable；
First power detection module is according to detecting that the downstream wireless signals are arranged the second switch and connect described the
One downlink.
3. wireless signal according to claim 2 extends head end, which is characterized in that the preset head end amplification factor rule
Then include:
The amplification factor of the downstream wireless signals of the wireless signal extension head end are as follows: A1-Pdet1；Wherein, A1 is described wireless
For the downstream wireless signals of signal extension head end in the output power of b2 point, Pdet1 is the downlink that the wireless signal extends head end
Detection power of the wireless signal in a point；The b2 point is between first downlink and the second switch；The a
Point is the test point of first power detection module, between the first antenna and the first switch；
The amplification factor of the up-link wireless signal of the wireless signal extension head end are as follows: A2；A2 is the wireless signal extension header
The amplification factor of the up-link wireless signal at end.
4. wireless signal according to claim 1 extends head end, which is characterized in that the wireless signal extension head end also wraps
It includes:
It is more than when the changed power for the downstream wireless signals that first power detection module detects is greater than the first preset range
When the first preset time period, first power detection module resets institute according to the preset head end amplification factor rule
State the amplification factor of the first downlink signal amplifier and the first uplink signal amplifier.
5. a kind of wireless signal extends terminal, which is characterized in that the wireless signal extends terminal and includes:
One duplexer extends head end communication with a wireless signal by coaxial links and is connected；
One second downlink is connected with duplexer communication, including one second downlink signal amplifier；
One second uplink is connected with duplexer communication, including one second uplink signal amplifier；
One second power detection module is set separately second downlink signal according to preset terminal amplification factor rule and amplifies
The amplification factor of device and the second uplink signal amplifier.
6. wireless signal according to claim 5 extends terminal, which is characterized in that second power detection module according to
Detect that downlink signal is arranged second uplink and opens.
7. wireless signal according to claim 6 extends terminal, which is characterized in that the wireless signal extends terminal packet
It includes:
One second antenna is connected with second uplink communication, is used for one up-link wireless signal of wireless receiving；
One third antenna is connected with second downlink communication, for transmitting wirelessly the downlink signal.
8. wireless signal according to claim 6 extends terminal, which is characterized in that the preset terminal amplification factor rule
Then include:
Second power detection module calculates the decaying Att=A1-Pdet2 for obtaining the coaxial links, wherein A1 is described
Wireless signal extends output power of the downstream wireless signals in b2 point of head end, and the b2 point is located at the wireless signal extension header
Between the second switch of first downlink and wireless signal the extension head end at end；Pdet2 is that the wireless signal extends terminal
Downlink signal c point detection power；The c point is the test point of second power detection module, is located at the duplex
Between device and second downlink；
The amplification factor of the downstream wireless signals of the wireless signal extension terminal are as follows: B1-Pdet2；B1 is the wireless signal
Extend the downlink signal output power of terminal；
The amplification factor of the up-link wireless signal of the wireless signal extension terminal are as follows: B2 < Att and B2 < As；B2 is described wireless
The fixed transmission power of the uplink signal of signal extension terminal；As is the isolation of the duplexer.
9. wireless signal according to claim 6 extends terminal, which is characterized in that the wireless signal extends terminal packet
It includes:
When the changed power of the downlink signal, which is greater than the second preset range, is more than the second preset time period, second power
Detection module resets the second downlink signal amplifier and described the according to the preset terminal amplification factor rule
The amplification factor of two uplink signal amplifiers.
10. a kind of wireless signal expansion system, which is characterized in that the wireless signal expansion system includes:
One wireless signal extends head end；
An at least wireless signal extends terminal, extends head end communication with the wireless signal by coaxial links and is connected；
The wireless signal extends head end
One first antenna, for receiving the downstream wireless signals of AP antenna transmission；
One first downlink is connected by a first switch with first antenna communication, including one first downlink signal is put
Big device；
One first uplink is connected by the first switch with first antenna communication, including one first uplink signal
Amplifier；
One first power detection module, according to detecting that the downstream wireless signals are arranged the first switch and connect described first
Downlink；First power detection module is set separately first downlink according to preset head end amplification factor rule and believes
The amplification factor of number amplifier and the first uplink signal amplifier；
The wireless signal extends terminal
One duplexer extends head end communication with a wireless signal by coaxial links and is connected；
One second downlink is connected with duplexer communication, including one second downlink signal amplifier；
One second uplink is connected with duplexer communication, including one second uplink signal amplifier；
One second power detection module is set separately second downlink signal according to preset terminal amplification factor rule and amplifies
The amplification factor of device and the second uplink signal amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711145922.1A CN109818665B (en) | 2017-11-17 | 2017-11-17 | Wireless signal extension system, wireless signal extension head end and terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711145922.1A CN109818665B (en) | 2017-11-17 | 2017-11-17 | Wireless signal extension system, wireless signal extension head end and terminal |
Publications (2)
| Publication Number | Publication Date |
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| CN109818665A true CN109818665A (en) | 2019-05-28 |
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