CN105246092A - Indoor coverage signal enhancing device and signal processing method thereof - Google Patents
Indoor coverage signal enhancing device and signal processing method thereof Download PDFInfo
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Abstract
The invention discloses an indoor coverage signal enhancing device and a signal processing method thereof in order to reduce indoor coverage signal attenuation and improve the performance of a communication network. The indoor coverage signal enhancing device comprises a first power line modem used for converting a downlink radio-frequency signal into a downlink power line signal and converting an uplink power line signal into an uplink radio-frequency signal, a second power line modem used for converting a downlink power line signal into a downlink radio-frequency signal and converting an uplink radio-frequency signal into an uplink power line signal, a signal amplification unit used for processing the downlink radio-frequency signal and sending the downlink radio-frequency signal to an access antenna as well as processing the uplink radio-frequency signal and sending the uplink radio-frequency signal to the second power line modem, and a synchronization module used for demodulating a received synchronization signal to obtain the synchronization time and controlling switching of an uplink/downlink channel according to the synchronization time.
Description
Technical field
The present invention relates to wireless communication technology field, particularly relate to a kind of in-door covering signal and strengthen equipment and signal processing method thereof.
Background technology
TD-LTE (TimeDivisionLongTermEvolution, timesharing Long Term Evolution) is usually operated at high band, and as 2.6GHz, its propagation loss and penetration loss are all comparatively large, and the indoor degree of depth covering performance of TD-LTE therefore usually can be caused very poor.The main cause of this problem is caused to be that the penetration loss (generally at about 20dB) of building significantly can reduce signal level.
For overcome outdoor cover indoor time signal wall penetration loss, in TD-LTE system, a kind of common solution uses in-door covering to strengthen equipment (as micropower wireless discharging-directly station) to carry out in-door covering.As shown in Figure 1, the outdoor signal received is introduced indoor by outdoor deployment passback antenna by RF cable, again launched after indoor deployment signal amplification unit amplifies signal by access antenna.Passback antenna is connected by RF cable with between indoor signal amplifying unit, and usual RF cable guides to indoor by air louver, thus can effectively overcome body of wall and wear damage.In-door covering strengthens equipment can ensure under the prerequisite not increasing base station number that the indoor degree of depth of network covers, and its cost is well below the little base station (as Femto base station) having effect same.Have without the need to advantages such as wired passback, equipment cost are low, easy for installation because in-door covering strengthens equipment, it is a kind of effective scheme strengthening in-door covering.
But the subject matter of this scheme is, if the installation site of the placement location distance passback antenna of indoor signal amplifying unit is far away, longer RF cable must be laid and connect passback antenna and indoor signal amplifying unit, the RF cable that this indoor additionally increase adds the decay of radiofrequency signal on the one hand, general, use the RF cable of 10 meters can cause the signal attenuation of 6-8dB, have impact on the performance of communication network.Affect indoor beauty on the other hand, reduce user's acceptance.
Summary of the invention
The embodiment of the present invention provides a kind of in-door covering signal to strengthen equipment and signal processing method thereof, in order to reduce in-door covering signal attenuation, improves the performance of communication network.
The embodiment of the present invention provides a kind of in-door covering signal to strengthen equipment, comprises the first power line modem, the second power line modem and signal amplification unit, is provided with synchronization module in described signal amplification unit, wherein:
Described first power line modem is connected with passback antenna by RF cable, and is connected with the second power line modem by power line, and described second power line modem is connected with described signal amplification unit; Described signal amplification unit, is connected with access antenna by RF cable; Described synchronization module is connected with described second power line modem;
Described first power line modem, is converted to descending power line signal for the downlink radio-frequency signal sent by described passback antenna and sends to the second power line modem; And the up power line signal that described second power line modem sends is converted to upstream radio-frequency signal and sends to described passback antenna;
Described second power line modem, is converted to downlink radio-frequency signal for the descending power line signal sent by described first power line modem and sends to described signal amplification unit; And the upstream radio-frequency signal that described signal amplification unit sends is converted to up power line signal and sends to described first power line modem;
Described signal amplification unit, sends to access antenna after being processed by the downlink radio-frequency signal sent the second power line modem; And send to described second power line modem after being processed by the upstream radio-frequency signal that described access antenna sends;
Described synchronization module, for receiving the synchronizing signal that described passback antenna is sent by described first power line modem and described second power line modem; Described in demodulation, synchronizing signal obtains lock in time, control the switching of the uplink/downlink passage of described second power line modem according to described lock in time, or control the switching of the described switching of the second power line modem uplink/downlink passage and the uplink/downlink passage of described first power line modem according to described lock in time.
The embodiment of the present invention provides a kind of synchronizing signal processing method strengthening equipment based on above-mentioned in-door covering signal, comprising:
First power line modem receives described passback antenna and sends synchronizing signal;
Described synchronizing signal is sent to described synchronization module by the second power line modem by described first power line modem;
Described in described synchronization module demodulation, synchronizing signal obtains lock in time, and controls the switching of described second power line modem uplink/downlink passage according to described lock in time; Or control the switching of described second power line modem uplink/downlink passage and the switching of described first power line modem uplink/downlink passage according to described lock in time.
The embodiment of the present invention provides a kind of downlink signal processing method based on above-mentioned synchronizing signal processing method, comprising:
When down going channel is opened, the downlink radio-frequency signal that described passback antenna sends is converted to descending power line signal and sends to described second power line modem by the first power line modem;
Described descending power line signal is converted to downlink radio-frequency signal and sends to described signal amplification unit by described second power line modem;
Described signal amplification unit sends to described access antenna to launch after processing the downlink radio-frequency signal received.
The embodiment of the present invention provides a kind of upward signal processing method based on above-mentioned synchronizing signal processing method, comprising:
When data feedback channel is opened, the upstream radio-frequency signal that described signal amplification unit sends is converted to up power line signal and sends to described first power line modem by described second power line modem, and described upstream radio-frequency signal is that described signal amplification unit sends to described signal amplification unit after described access antenna receives row relax of going forward side by side;
Described up power line signal is converted to upstream radio-frequency signal and sends base station by described passback antenna by described first power line modem.
The in-door covering signal that the embodiment of the present invention provides strengthens equipment and signal processing method thereof, at two power line modems that indoor deployment pairing uses, be connected with passback antenna and signal amplification unit respectively, like this, after receiving uplink/downlink radiofrequency signal, signal conversion and transmission is carried out by two power line modems disposed in indoor, two power line modems carry out the switching of up-downgoing passage according to the synchronizing signal that base station issues, due in indoor without the need to using RF cable to carry out Signal transmissions, effectively reduce the length of RF cable, thus Signal transmissions decay can be reduced, improve the performance of communication network.
Other features and advantages of the present invention will be set forth in the following description, and, partly become apparent from specification, or understand by implementing the present invention.Object of the present invention and other advantages realize by structure specifically noted in write specification, claims and accompanying drawing and obtain.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms a part of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is in prior art, and in-door covering strengthens the syndeton schematic diagram of equipment;
Fig. 2 is in the embodiment of the present invention, and in-door covering strengthens the structural representation of equipment;
Fig. 3 is in the embodiment of the present invention, the implementing procedure schematic diagram of synchronizing signal processing method;
Fig. 4 is in the embodiment of the present invention, the implementing procedure schematic diagram of downlink signal processing method;
Fig. 5 is in the embodiment of the present invention, the implementing procedure schematic diagram of upward signal processing method.
Embodiment
Power line communication (PowerLineCommunication, PLC) technology refers to a kind of communication mode utilizing power line transmission data-signal.This technology, after the high-frequency signal of carrying information is modulated by the adapter of transmission information, loads on electric current, then utilize power line to carry out the transmission of data.The adapter of receiving information is separated demodulation out high-frequency signal again from electric current, and is sent to computer or phone to realize information transmission, thus realizes the access of network when not needing rewiring.
Wherein, power line communications apparatus comprises the adapter sent and received information, be power line communication modulator-demodulator (Homeplug be namely commonly called as), it uses family or the existing power line of office to set up into network with socket, connects PC, ADSLmodem, Set Top Box, audio frequency apparatus, watch-dog and other intelligent electric equipment etc., transmit data, voice and video.It has the feature of plug and play, by average family power line transmission signals.
The general principle of power line communication is, when sending, utilizing modulation technique to be modulated by user data, the high frequency of carrying information being loaded on electric current, then transmits on power line; At receiving terminal, first modulation signal takes out by device after filtering, then through demodulation, just can obtain former signal of communication, and is sent to computer or phone, to realize information transmission.General, due to the strong interference of 50Hz harmonic wave on power line, the voice signal of 0.3-3.4kHz directly can not be transmitted on power line, more than 40kHz can only be moved just can carry out Signal transmissions by signal spectrum.Because power line communication is communicated by multiplexing power circuit, thus do not need again newly-built physical communication lines, capital expenditure and regular maintenance expense can be saved.
Based on this, the invention process provides a kind of in-door covering signal based on power line communication to strengthen equipment and method for transmitting signals thereof, for reducing radio signal transmission decay, improves the performance of communication network, meanwhile, in-door covering signal is made to strengthen equipment more attractive in appearance.
Below in conjunction with Figure of description, the preferred embodiments of the present invention are described, be to be understood that, preferred embodiment described herein is only for instruction and explanation of the present invention, be not intended to limit the present invention, and when not conflicting, the embodiment in the present invention and the feature in embodiment can combine mutually.
As shown in Figure 2, for the structural representation of the in-door covering signal enhancing equipment that the embodiment of the present invention provides, comprise: the first power line modem 21, second power line modem 22 and signal amplification unit 23, first power line modem 21 are connected with passback antenna and the second power line modem 22 respectively.Wherein, passback antenna is connected with base station, for receiving the downlink radio-frequency signal of base station transmission and sending to the first power line modem 21 and will receive upstream radio-frequency signal from the first power line modem 21 and send to base station.Second power line modem 22 is connected with the first power line modem 21 and signal amplification unit 23 respectively, signal amplification unit 23 is connected with access antenna by RF cable, and access antenna is for receiving the upstream radio-frequency signal of UE transmission and sending to the second power line modem 22 and the downlink radio-frequency signal that signal amplification unit 23 sends is sent to UE.
Wherein, the first power line modem 21 is connected by RF cable with passback antenna, and be connected by power line with the second power line modem 22, the second power line modem 22 is connected by RF cable with signal amplification unit 23.
During concrete enforcement, the first power line modem 21, is converted to descending power line signal for the downlink radio-frequency signal sent by passback antenna and sends to the second power line modem; And the up power line signal that the second power line modem 22 sends is converted to upstream radio-frequency signal and sends to passback antenna; Second power line modem 22, the descending power line signal for being sent by the first power line modem 21 is converted to downlink radio-frequency signal and sends to signal amplification unit 23; And the upstream radio-frequency signal that signal amplification unit 23 sends is converted to up power line signal and sends to the first power line modem 21; Signal amplification unit 23, sends to access antenna after being processed by the downlink radio-frequency signal sent the second power line modem 22; And send to the second power line modem after being processed by the upstream radio-frequency signal that access antenna sends.
Concrete, passback astronomical cycle is in the good region of outdoor base station signal, communicate with outdoor base station, be responsible for during downlink working receiving the signal from Base Transmitter from aerial and send to signal amplification unit 23 by the first power line modem 21 and the second power line modem 22, the UE emission of radio frequency signals after being processed by signal amplification unit 23 during up work is gone out.
First power line modem 21, complete the translation function between radiofrequency signal and power line transmission signals, usually the nearest power line access point place of distance passback antenna is installed on (as in domestic. applications, the socket that distance passback antenna place is nearest can be installed on), be connected by RF cable between passback antenna and the first power line modem 21.First power line modem 21 by the power line power taking simultaneously of its access, and is communicated by power line with between the second power line modem 22.
Second power line modem 22, complete the translation function between radiofrequency signal and power line transmission signals, usually support the use with the first power line modem 21, such as during downlink reception, first power line modem 21 converts the radiofrequency signal that passback antenna receives to be adapted at power line transmits signal, second power line modem 22 receives after signal from power line, and the signal being adapted at power line transmits is changed to radiofrequency signal again.Second power line modem 22 by the power line power taking simultaneously of its access, and is communicated by power line with between the first power line modem 21.
Signal amplification unit 23 and the second power line modem 22 with access antenna and be connected, complete the function such as filtering and power amplification of radiofrequency signal, usually need possess sufficiently high link gain.
Access antenna is connected with signal amplification unit 23, is responsible for the emission of radio frequency signals after being processed by signal amplification unit 23 and goes out during downlink working, will be responsible for the signal launched from the aerial UE of reception and give signal amplification unit 23 during up work.
It should be noted that, for tdd systems, as TD-LTE system, because TD-LTE system is tdd systems, uplink and downlink works is at the different time-gap of same frequency range, and therefore, its stationary problem realizes TD-LTE in-door covering to strengthen one of key issue of equipment.Therefore, power line modem also needs to carry out corresponding synchronizing process, to determine uplink and downlink signals direction.
In the embodiment of the present invention, synchronization module can be arranged in signal amplification unit 23, wherein, synchronization module is connected with the second power line modem 22, for receiving the synchronizing signal that passback antenna is sent by the first power line modem 21 and the second power line modem 22; Demodulation synchronization signal obtains lock in time, according to the switching of uplink/downlink passage controlling the second power line modem 22 lock in time, or the switching of uplink/downlink passage according to the switching and the first power line modem 21 that control the second power line modem 22 uplink/downlink passage lock in time.During concrete enforcement, synchronization module is after obtaining lock in time, export lock in time to the second power line modem 22 or the first power line modem 21, to control the second power line modem 22 or first power line modem 21 up-downgoing passage corresponding switching time, namely at descending time slot, open the downstream signal that down going channel repeating base station sends, at ascending time slot, open the upward signal that data feedback channel amplification forwarding UE (UserEquipment, subscriber equipment) sends.
Wherein, the synchronizing signal that passback antenna sends is radiofrequency signal, first power line modem 21 is after the synchronizing signal receiving the transmission of passback antenna, be converted into the signal that is adapted at power line transmission and send to the second power line modem 22, second power line modem 22 sends to synchronization module after converting the signal being adapted at power line transmission received to radiofrequency signal again, and the synchronizing signal that synchronization module demodulation receives obtains lock in time.
During specific implementation, for the first power line modem 21, its up-downgoing passage can all keep normally open (now, can consider between up-downgoing passage to carry out signal isolation by circulator), the synchronizing signal that then synchronization module is sent only can control the operating state of the up-downgoing passage of the second power line modem 22, namely at the descending time slot of synchronizing signal instruction, second power line modem 22 is in down going channel and opens data feedback channel closed condition, signal is only had to pass to the second power line modem 22 from the first power line modem 21, and at the ascending time slot that synchronizing signal indicates, the second power line modem 22 is in data feedback channel and opens down going channel closed condition, only has signal to pass to the first power line modem 21 from the second power line modem 22.
Preferably, second power line modem 22 also can give the first power line modem 21 synchronizing signal by power line transmission, namely at the descending time slot of synchronizing signal instruction, first power line modem 21 and the second power line modem 22 are all in down going channel and open data feedback channel closed condition, only have signal to pass to the second power line modem 22 from the first power line modem 21; And at the ascending time slot that synchronizing signal indicates, first power line modem 21 and the second power line modem 22 are all in data feedback channel and open down going channel closed condition, only have signal to pass to the first power line modem 21 from the second power line modem 22.
Preferably, when specifically implementing, power line signal is analog intermediate frequency signal; First power line modem 21, may be used for that downlink radio-frequency signal is carried out down-conversion and obtains descending analog intermediate frequency signal; And up for institute analog intermediate frequency signal is carried out up-conversion obtain upstream radio-frequency signal; Second power line modem 22, may be used for that descending analog intermediate frequency signal is carried out up-conversion and obtains downlink radio-frequency signal; And upstream radio-frequency signal is carried out down-conversion obtain up analog intermediate frequency signal.
Embodiment for a better understanding of the present invention, strengthens equipment for in-door covering signal below and is described the specific implementation process of processing procedure to the embodiment of the present invention that downstream signal processes.
When in-door covering signal strengthen equipment amplify the downstream signal that base station sends to UE time, passback antenna receives the downstream signal that base station sends, and by RF cable the radio signal transmission received to the first power line modem 21.First power line modem 21 carries out down-conversion radiofrequency signal, converts the analog intermediate frequency signal being adapted at power line transmits to, and gives the second power line modem 22 by power line Signal transmissions.Second power line modem 22 receives the signal of being come by power line transmission from the first power line modem 21, revert to original radiofrequency signal (namely the first power line modem 21 is from the downstream signal that receives of passback antenna) after carrying out up-conversion, and be transferred to signal amplification unit 23.Signal amplification unit 23 sends to UE by access antenna after the radiofrequency signal received from the second power line modem 22 is carried out filtering, amplification.Due in said process, only man-to-man point to point link is carried out between first electric power modem 21 and the second electric power modem 22, without the need to carrying out the multiple access communication of one-to-many, so without the need to the digital communication protocol of complexity, therefore, without the need to carrying out digital-to-analogue/analog-to-digital conversion, power line modem is transformed into analog intermediate frequency signal the radiofrequency signal received, and then this analog signal is directly coupled on power line and transmits.Owing to not transforming on numeric field, therefore, can save DA required for digitized processing A/D chip and digit chip, on the one hand, signal transacting required time can be reduced, on the other hand, can significantly reduce costs.
A kind of embodiment of the power line communication between the first power line modem 21 and the second power line modem 22 is as follows: the first power line modem 21 inserting a certain supply socket is be adapted at the analog intermediate frequency signal (as frequency range 2MHz ~ 30MHz) that power line transmits radiofrequency signal (carrier wave as TD-LTE the is 2.6GHz radiofrequency signal) frequency down-converts received from passback antenna, and analog intermediate frequency signal is coupled in power line.The second power line modem 22 inserting another supply socket extracts analog intermediate frequency signal from power line, is the radiofrequency signal of (as 2.6GHz) on primary carrier, and gives signal amplification unit 23 by its frequency up-converted.
In-door covering signal strengthen equipment to the processing procedure of upward signal and said process similar, when the upward signal that in-door covering signal enhancing equipment amplification UE sends to base station, access antenna receives the upward signal that UE sends, after signal amplification unit 23 filtering, amplifying process, give the second power line modem 22 the radiofrequency signal after filtering, amplification.Second power line modem 22 converts radiofrequency signal to the signal being adapted at power line transmits, and gives the first power line modem 21 by power line Signal transmissions.First power line modem 21 receives the signal of being come by power line transmission from the second power line modem 22, after reverting to the upstream radio-frequency signal on primary carrier, sends to base station by passback antenna.
Preferably, when specifically implementing, the second power line modem 22 can be arranged with signal amplification unit 23 integrated (merging).On the one hand, can reduce by an active equipment unit, thus make the integrated level of products scheme higher, more compact attractive in appearance.On the other hand, can reduce by a power supply device, namely only need a socket power taking, just can meet the need of work of the second power line modem 22 and signal amplification unit 23.Meanwhile, also eliminate the RF cable between the second power line modem 22 and signal amplification unit 23, make to lay installation more convenient, also reduce RF cable loss.Finally, what be arranged at that synchronization module in signal amplification unit 23 can be convenient passes to synchronizing signal the second power line modem 22.
Certain access antenna also can setting integrated with signal amplification unit 23.Better, the second power line modem 22, signal amplification unit 23 and access antenna three integrate, thus improve the aesthetics of equipment, reduce deployed with devices difficulty.
Based on same inventive concept, a kind of signal processing method strengthening equipment based on the above-mentioned in-door covering signal provided is additionally provided in the embodiment of the present invention, the principle of dealing with problems due to said method and in-door covering signal strengthen unit affinity, therefore the enforcement of said method see the enforcement of equipment, can repeat part and repeats no more.
As shown in Figure 3, be the synchronizing signal handling process schematic diagram that the embodiment of the present invention provides, can comprise the following steps:
S31, the first power line modem receive passback antenna and send synchronizing signal;
Described synchronizing signal is sent to described synchronization module by the second power line modem by S32, the first power line modem;
Described in S33, synchronization module demodulation, synchronizing signal obtains lock in time;
S34, synchronization module control the switching of described second power line modem uplink/downlink passage according to described lock in time; Or control the switching of described second power line modem uplink/downlink passage and the switching of described first power line modem uplink/downlink passage according to described lock in time.
As shown in Figure 4, be the implementing procedure schematic diagram of the downlink signal processing method based on above-mentioned synchronizing signal processing method that the embodiment of the present invention provides, can comprise the following steps:
S41, when down going channel is opened, the first power line modem by passback antenna send downlink radio-frequency signal be converted to descending power line signal and send to the second power line modem.
Preferably, power line signal can be analog intermediate frequency signal, and downlink radio-frequency signal is carried out down-conversion and obtains descending analog intermediate frequency signal by the first power line modem.
Descending power line signal is converted to downlink radio-frequency signal and sends to signal amplification unit by S42, the second power line modem.
Descending analog intermediate frequency signal is carried out up-conversion and obtains downlink radio-frequency signal by the second power line modem.
S43, signal amplification unit send to access antenna to launch after processing the downlink radio-frequency signal received.
As shown in Figure 5, be the implementing procedure schematic diagram of the downlink signal processing method based on above-mentioned synchronizing signal processing method that the embodiment of the present invention provides, can comprise the following steps:
S51, when data feedback channel is opened, the upstream radio-frequency signal that signal amplification unit sends is converted to up power line signal and sends to the first power line modem by the second power line modem.
Wherein, upstream radio-frequency signal is that signal amplification unit sends to signal amplification unit after access antenna receives row relax of going forward side by side.
During concrete enforcement, upstream radio-frequency signal is carried out down conversion and obtains up power line signal by the second power line modem.
Up power line signal is converted to upstream radio-frequency signal and sends base station by passback antenna by S52, the first power line modem.
Concrete, up power line signal is carried out up conversion and obtains upstream radio-frequency signal by the first power line modem.
The in-door covering signal that the embodiment of the present invention provides strengthens equipment and signal processing method thereof, at two power line modems that indoor deployment pairing uses, be connected with passback antenna and signal amplification unit respectively, like this, after receiving uplink/downlink radiofrequency signal, signal conversion and transmission is carried out by two power line modems disposed in indoor, due in indoor without the need to using RF cable to carry out Signal transmissions, effectively reduce the length of RF cable, thus Signal transmissions decay can be reduced, improve the performance of communication network.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt the form of complete hardware embodiment, completely software implementation or the embodiment in conjunction with software and hardware aspect.And the present invention can adopt in one or more form wherein including the upper computer program implemented of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) of computer usable program code.
The present invention describes with reference to according to the flow chart of the method for the embodiment of the present invention, equipment (system) and computer program and/or block diagram.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or square frame.These computer program instructions can being provided to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, making the instruction performed by the processor of computer or other programmable data processing device produce device for realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing device, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make on computer or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computer or other programmable devices is provided for the step realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
Although describe the preferred embodiments of the present invention, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (10)
1. in-door covering signal strengthens an equipment, it is characterized in that, comprises the first power line modem, the second power line modem and signal amplification unit, be provided with synchronization module in described signal amplification unit, wherein:
Described first power line modem is connected with passback antenna by RF cable, and is connected with the second power line modem by power line, and described second power line modem is connected with described signal amplification unit; Described signal amplification unit is connected with access antenna by RF cable; Described synchronization module is connected with described second power line modem;
Described first power line modem, is converted to descending power line signal for the downlink radio-frequency signal sent by described passback antenna and sends to the second power line modem; And the up power line signal that described second power line modem sends is converted to upstream radio-frequency signal and sends to described passback antenna;
Described second power line modem, is converted to downlink radio-frequency signal for the descending power line signal sent by described first power line modem and sends to described signal amplification unit; And the upstream radio-frequency signal that described signal amplification unit sends is converted to up power line signal and sends to described first power line modem;
Described signal amplification unit, sends to access antenna after the downlink radio-frequency signal for sending the second power line modem processes; And send to described second power line modem after being processed by the upstream radio-frequency signal that described access antenna sends;
Described synchronization module, for receiving the synchronizing signal that described passback antenna is sent by described first power line modem and described second power line modem; Described in demodulation, synchronizing signal obtains lock in time, control the switching of the uplink/downlink passage of described second power line modem according to described lock in time, or control the switching of the described switching of the second power line modem uplink/downlink passage and the uplink/downlink passage of described first power line modem according to described lock in time.
2. equipment as claimed in claim 1, it is characterized in that, described power line signal is analog intermediate frequency signal;
Described first power line modem, obtains descending analog intermediate frequency signal specifically for described downlink radio-frequency signal is carried out down-conversion; And described up analog intermediate frequency signal is carried out up-conversion obtain upstream radio-frequency signal;
Described second power line modem, obtains downlink radio-frequency signal specifically for described descending analog intermediate frequency signal is carried out up-conversion; And described upstream radio-frequency signal is carried out down-conversion obtain up analog intermediate frequency signal.
3. equipment as claimed in claim 1, is characterized in that, described second power line modem and described signal amplification unit merge and arrange.
4. equipment as claimed in claim 1, is characterized in that, described signal amplification unit and described access antenna merge and arrange.
5. equipment as claimed in claim 1, is characterized in that, described second power line modem, described signal amplification unit and described access antenna merge setting.
6., based on a synchronizing signal processing method for equipment described in the arbitrary claim of Claims 1 to 5, it is characterized in that, comprising:
First power line modem receives described passback antenna and sends synchronizing signal;
Described synchronizing signal is sent to described synchronization module by the second power line modem by described first power line modem;
Described in described synchronization module demodulation, synchronizing signal obtains lock in time, and controls the switching of described second power line modem uplink/downlink passage according to described lock in time; Or control the switching of described second power line modem uplink/downlink passage and the switching of described first power line modem uplink/downlink passage according to described lock in time.
7. based on a downlink signal processing method for method described in claim 6, it is characterized in that, comprising:
When down going channel is opened, the downlink radio-frequency signal that described passback antenna sends is converted to descending power line signal and sends to described second power line modem by described first power line modem;
Described descending power line signal is converted to downlink radio-frequency signal and sends to described signal amplification unit by described second power line modem;
Described signal amplification unit sends to described access antenna to launch after processing the downlink radio-frequency signal received.
8. method as claimed in claim 7, it is characterized in that, described power line signal is analog intermediate frequency signal; And
Described downlink radio-frequency signal is converted to descending power line signal, comprises:
Described downlink radio-frequency signal is carried out down-conversion and obtains descending analog intermediate frequency signal;
Described descending power line signal is converted to downlink radio-frequency signal, comprises:
Described descending analog intermediate frequency signal is carried out up-conversion and obtains downlink radio-frequency signal.
9., based on a upward signal processing method for method described in claim 6, it is characterized in that, comprising:
When data feedback channel is opened, the upstream radio-frequency signal that described signal amplification unit sends is converted to up power line signal and sends to described first power line modem by described second power line modem, and described upstream radio-frequency signal is that described signal amplification unit sends to described signal amplification unit after described access antenna receives row relax of going forward side by side;
Described up power line signal is converted to upstream radio-frequency signal and sends to base station by described passback antenna by described first power line modem.
10. method as claimed in claim 9, it is characterized in that, described power line signal is analog intermediate frequency signal; And
Upstream radio-frequency signal is converted to up power line signal, comprises:
Upstream radio-frequency signal carries out down-conversion and obtains up analog intermediate frequency signal; And
Described up power line signal is converted to upstream radio-frequency signal, comprises:
Described up analog intermediate frequency signal is carried out up-conversion and obtains upstream radio-frequency signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410328414.7A CN105246092B (en) | 2014-07-10 | 2014-07-10 | A kind of in-door covering signal enhancing equipment and its signal processing method |
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| CN106506041A (en) * | 2016-10-13 | 2017-03-15 | 杭州鸿雁智能科技有限公司 | A kind of Homeplug |
| CN107202998A (en) * | 2017-06-19 | 2017-09-26 | 北京航天长征飞行器研究所 | The real-time satellite signal simulator and analogy method of a kind of power line communication |
| CN111741522A (en) * | 2020-07-06 | 2020-10-02 | 超讯通信股份有限公司 | Timing synchronization device |
| CN112311420A (en) * | 2020-05-27 | 2021-02-02 | 上海明波通信技术股份有限公司 | Single-standard dual-mode communication data frame, signal transmitting and receiving method, transmitting and receiving device and communication system |
| CN112752280A (en) * | 2019-10-31 | 2021-05-04 | 中国移动通信有限公司研究院 | SSB receiving method and device |
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| CN112752280A (en) * | 2019-10-31 | 2021-05-04 | 中国移动通信有限公司研究院 | SSB receiving method and device |
| CN112311420A (en) * | 2020-05-27 | 2021-02-02 | 上海明波通信技术股份有限公司 | Single-standard dual-mode communication data frame, signal transmitting and receiving method, transmitting and receiving device and communication system |
| CN111741522A (en) * | 2020-07-06 | 2020-10-02 | 超讯通信股份有限公司 | Timing synchronization device |
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