CN101286785A - Frequency shifting direct amplifying station, frequency shifting system and signal transmitting method - Google Patents
Frequency shifting direct amplifying station, frequency shifting system and signal transmitting method Download PDFInfo
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- CN101286785A CN101286785A CNA2007100654068A CN200710065406A CN101286785A CN 101286785 A CN101286785 A CN 101286785A CN A2007100654068 A CNA2007100654068 A CN A2007100654068A CN 200710065406 A CN200710065406 A CN 200710065406A CN 101286785 A CN101286785 A CN 101286785A
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Abstract
The invention provides a frequency shift repeater and a frequency shift system and a signal transmission method thereof. The signal transmission method comprises upstream signal transmission and downstream signal transmission. The downstream signal transmission comprises the receiving of the signals of a base station, the shifting of the frequency of the base station signals to a downstream relay frequency and the sending of the signals after frequency shift, the receiving of the signals after the frequency shift, the recovering of the signal frequency after the frequency shift to the frequency of the base station and then the sending of the signal frequency to a mobile platform. The upstream signal transmission comprises the receiving of the signals of the mobile platform, the shifting of the frequency of the mobile platform signals to an upstream relay frequency and the sending of the signals after frequency shift, the receiving of the signals after the frequency shift, the recovering of the signal frequency after the frequency shift to the frequency of the mobile platform signal and then the sending of the signal frequency to the base station. Both the downstream relay frequency and the upstream relay frequency range between 110MHz and 580MHz. The invention can effectively increase the coverage range of the base station by adopting low frequency for carrying out relay transmission.
Description
Technical field
The present invention is about wireless communication field, especially in regard to a kind of frequency-shift repeater and frequency shift system and method for transmitting signals thereof.
Background technology
Mobile communication system mainly comprises: digital clustering communication system, code division multiple access CDMA 800MHz public mobile communication system, GSM public access mobile radio, WCDMA third generation public access mobile radio, TD-SCDMA third generation public access mobile radio, CDMA2000 third generation public access mobile radio.These public access mobile radio frequency such as following tables:
Development of wireless communication devices has made things convenient for interpersonal communication and has exchanged, and particularly the Cellular Networks technology of sub-district system has realized the multiplexing of frequency, and a base station in the sub-district can be served a plurality of users simultaneously.Yet the overlay area of present any communication technology all weak signal area and blind area can occur, and to some remote districts and the few blind area of number of users, it is too high to set up analog or digital base station cost, and infrastructure is also complicated.For this reason, provide a kind of cost low, set up simply but have the small base station function cost-effective equipment---the repeater is necessary.
The repeater is to play a kind of radio transmission transferring equipment that signal strengthens in the wireless communication transmissions process.The basic function of repeater is exactly a radiofrequency signal power intensifier.Fig. 1 is a simplest a kind of repeater schematic diagram in the prior art.As shown in the figure: at down direction, donor antenna is issued travelling carriage through duplexer from retransmitting antenna after the base station signal that receives is amplified (LNA) and power amplification (PA) processing by low noise.Up direction, retransmitting antenna are issued the base station through duplexer from donor antenna after the mobile station signal that receives is handled by low noise amplification and power amplification.The monitoring processing unit is mainly monitored the sync equalizing of uplink and downlink signals and is amplified.
Whether the repeater basis has carried out frequency translation can be divided into intra-frequency repeater and frequency-shift repeater.
(1) intra-frequency repeater, this is modal a kind of repeater, it only is that radio signal power to original frequency amplifies.A kind of repeater that can provide the wireless signal relaying to amplify for WCDMA or CDMA2000 is disclosed as the utility application that application number is 200420117366.9, name is called " 3G mobile communication wireless repeater ".Wherein, the radiofrequency signal of donor base station is descending: 2110-2170MHz, up 1920-1980MHz.This repeater is selected the uplink and downlink signal that receives module filtered, is also launched through after the power amplification by frequency.This repeater provides better coverage effect for 3G network.
(2) frequency-shift repeater, this repeater can be divided into main frame and slave according to its residing position and the function that provides.Down direction: main frame transmits frequency translation to a relaying frequency of base station signal, and near the signal of the slave the travelling carriage after with shift frequency is reduced to and offers travelling carriage behind the base station signal and receive then.The transmission principle and the down direction of up direction are similar.The interference of the signal of repeater to base station signal can to a certain degree be avoided owing to adopt the relaying frequency that is different from base station frequency to transmit in this repeater.Yet present frequency-shift repeater often arrives higher frequency range with frequency translation, as 1.5GHz, 1.8GHz etc.Be 200510018495.1 at application number, denomination of invention is in " a kind of ISM band mobile communication shift frequency transmission repeater ", this frequency-shift repeater transmits the ISM band that base station frequency is moved 2.4G.
As everyone knows: frequency is high more, attenuation ability big, the diffracting obstacles thing in space is poor more.With the frequency-shift repeater of above these upper frequencies as the relaying frequency, the distance of its main frame and slave is all not far, and requires do not have barrier to stop between their antenna.Therefore, such repeater only is suitable for use in the base station than the city of comparatively dense and the not far place of distance between main frame and the slave.And,, use above frequency just improper as the relaying frequency because the place that much will cover is far away apart from the mobile base station, have massif to stop mostly again simultaneously for remote rural area.If a kind of frequency-shift repeater at the rural area is arranged, base station frequency can be moved a lower frequency range transmits, can increase the coverage of base station signal greatly, and diffracting power that can enhancing signal, satisfy the needs of project of "Communication with Every Village".
Summary of the invention
In order to overcome the defective of prior art, the invention provides a kind of frequency-shift repeater and frequency shift system and method for transmitting signals thereof.This frequency shift system is at the needs of rural area project of "Communication with Every Village", between main frame and slave, adopt the relaying frequency of 110MHz-580MHz to transmit, the scope of can effectively increasing network coverage is specially adapted to some communication blind spot areas that distance is remote, environment is abominable.
In order to realize purpose of the present invention, the invention provides a kind of method for transmitting signals of frequency-shift repeater, this method for transmitting signals comprises the signal transmission of down direction and up direction.The transmission of the signal of described down direction comprises: receive base station signal, with the frequency translation of base station signal to the downlink relay frequency and the signal after sending shift frequency; Receive the signal behind the described shift frequency, send to travelling carriage after the signal frequency behind the shift frequency being reduced to the frequency of described base station signal.The transmission of the signal of described up direction comprises: the receiving mobile signal, with the frequency translation of mobile station signal to the uplink relay frequency and the signal after sending shift frequency; Receive the signal behind the described shift frequency, send to the base station after the signal frequency behind the shift frequency being reduced to the frequency of described mobile station signal.Described downlink relay frequency and described uplink relay frequency at 110MHZ between the 580MHz.
Described downlink relay frequency or uplink relay frequency are single frequency or an a plurality of frequency or a band frequency scope.
Down direction receives base station signal and up direction sends to the base station with signal, is to communicate by antenna or base station coupler and base station.
The present invention also provides a kind of frequency-shift repeater.Described frequency-shift repeater comprises: receiving element, converter unit and transmitting element.Described receiving element is used to receive the signal from base station, travelling carriage and frequency-shift repeater.Described converter unit when receiving base station signal, arrives the downlink relay frequency with the base station signal frequency translation; When receiving mobile station signal, the mobile station signal frequency translation is arrived the uplink relay frequency; When receiving the upward signal of frequency-shift repeater, described upward signal frequency is reduced to the mobile station signal frequency; When receiving the downstream signal of frequency-shift repeater, described downstream signal frequencies is reduced to the base station signal frequency.Described transmitting element is used to send the signal through frequency conversion.Described downlink relay frequency and described uplink relay frequency at 110MHZ between the 580MHz.
Described downlink relay frequency or uplink relay frequency are single frequency or an a plurality of frequency or a band frequency scope.
Described receiving element is to communicate by antenna or base station coupler and base station.
The present invention also provides a kind of frequency shift system, comprises main frame and slave.Described main frame comprises: donor unit, main frame converter unit and main frame TU Trunk Unit.Described donor unit links to each other with the main frame converter unit: receive base station signal and it is issued the main frame converter unit at down direction, receive the signal of main frame converter unit and it is issued the base station at up direction.Described main frame converter unit links to each other with main frame TU Trunk Unit: at down direction the frequency translation of base station signal is issued main frame TU Trunk Unit to the downlink relay frequency and with it, at up direction the signal frequency that main frame TU Trunk Unit receives is reduced to the mobile station signal frequency and issues donor unit.Described main frame TU Trunk Unit: at down direction the signal of main frame converter unit is sent to slave, receive the slave signal and issue the main frame converter unit at up direction.Described slave comprises: slave TU Trunk Unit, slave converter unit and retransmission unit.Described slave TU Trunk Unit links to each other with described slave converter unit, receives host signal and it is issued the slave converter unit at down direction, receives the signal of slave converter unit and it is issued main frame at up direction.Described slave converter unit links to each other with described retransmission unit, be reduced to the frequency of described base station signal and it is issued retransmission unit in the frequency of down direction, the mobile station signal frequency translation that retransmission unit receives is issued slave TU Trunk Unit to the uplink relay frequency and with it at up direction with host signal.Described retransmission unit sends to travelling carriage at down direction with the signal of slave converter unit, issues the slave converter unit at up direction receiving mobile signal and with it.Described downlink relay frequency and described uplink relay frequency at 110MHZ between the 580MHz.
Described downlink relay frequency or uplink relay frequency are single frequency or an a plurality of frequency or a band frequency scope.
Described donor unit further comprises donor antenna, duplexer, low noise amplifier and power amplifier.Described donor antenna links to each other with described duplexer, receives descending base station signal, and sends up mobile station signal.Described duplexer connects described low noise amplifier and power amplifier respectively, is used to provide the path of uplink and downlink transmission.Described low noise amplifier links to each other with described main frame converter unit, is used to amplify descending base station signal.Described power amplifier links to each other with described main frame converter unit, is used to amplify up mobile station signal.
Described donor unit further comprises base station coupler and duplexer; Described base station coupler links to each other with described duplexer, is used to provide the transmission channel of the uplink and downlink signal of base station and duplexer.Described duplexer links to each other with described main frame converter unit, is used to provide the transmission channel of the uplink and downlink of main frame converter unit.
Described donor unit is the base station coupler; Described base station coupler links to each other with described main frame converter unit, is used to provide the transmission channel of the uplink and downlink signal of base station and main frame converter unit.
Frequency-shift repeater of the present invention adopts the mode of main frame and slave combination, and the transmission frequency between main frame and the slave is determined at 110MHz to select the relaying frequency of 2 groups of frequencies (frequency range) as uplink and downlink between the 580MHz arbitrarily in this scope.The frequency-shift repeater of this low frequency has not only overcome the shortcoming of existing repeater, has the following advantages simultaneously:
1. because frequency is less to the aerial attenuation of the radio wave between the 580MHz at 110MHz, the distance of transmission can be far away, so the distance between main frame of the present invention and the slave can be far away.
2. because frequency is stronger to the radio wave diffracting power between the 580MHz at 110MHz, can under the situation that certain obstacle stops, realize the transmission of electric wave.Be that its main frame and slave can allow certain barrier to stop.
Frequency-shift repeater of the present invention is suitable for the project of "Communication with Every Village" needs, can solve much the problem that the mobile network in the mountain village, factories and miness, pastoral area or the one-shot job district that intercept away from cities and towns, by mountain covers well.These places are in communication always because distance is remote, environment abominable, it is huge to drop into blind spot uses traditional means to solve these points and will waste great amount of manpower and material resources.The present invention invents at logical requirement the in village village in this remote place.
Description of drawings
Fig. 1 is a prior art repeater schematic diagram;
Fig. 2 is a frequency shift system schematic diagram of the present invention;
Fig. 3 is frequency shift system of the present invention " aerial coupling " schematic diagram;
Fig. 4 is frequency shift system of the present invention " directly coupling " schematic diagram;
Fig. 5 is the main frame block diagram of frequency shift system of the present invention;
Fig. 6 is the slave block diagram of frequency shift system of the present invention;
Fig. 7 is the main frame detailed structure view of frequency shift system of the present invention;
Fig. 8 is the slave detailed structure view of frequency shift system of the present invention;
Fig. 9 is a frequency-shift repeater schematic diagram of the present invention;
Frequency shift system direct coupling system one schematic diagram that Figure 10 forms for frequency-shift repeater of the present invention;
Frequency shift system direct coupling system two schematic diagrams that Figure 11 forms for frequency-shift repeater of the present invention;
Frequency shift system direct coupling system three schematic diagrams that Figure 12 forms for frequency-shift repeater of the present invention;
Figure 13 is a frequency-shift repeater circuit diagram one of the present invention;
Figure 14 is a frequency-shift repeater circuit diagram two of the present invention;
Figure 15 is a frequency-shift repeater converter unit detailed circuit diagram one of the present invention;
Figure 16 is a frequency-shift repeater converter unit detailed circuit diagram two of the present invention.
Embodiment
The invention provides a kind of method that adopts the repeater to carry out the signal transmission,, realize the covering on a large scale of rural area mobile communication signal to solve the demand of project of "Communication with Every Village".This method adopts frequency-shift repeater that the frequency translation of descending base station signal and up mobile station signal is carried out relay transmission to 110MHz-580MHz, at signal receiving end signal frequency is reduced to the signal frequency of original transmission then, and the confession receiving terminal receives.Because adopt lower frequency to carry out relay transmission, repeater of the present invention is more farther than traditional repeater transmission range, and is also stronger to the diffracting power of barrier.
The present invention is that example describes with GSM base station and cdma base station; yet the present invention is equally applicable to the base station of other type, all belongs within the protection range of the present invention as long as the frequency-shift repeater that adopted carries out relay transmission with the frequency translation of the type base station signal to 110MHz-580MHz.
Embodiment 1:
The invention provides a frequency shift system.Fig. 2 is a frequency shift system principle schematic of the present invention.As shown in the figure, frequency shift system of the present invention is made of main frame and slave.With the down direction is example, and main frame receives base station signal, and the frequency of GSM/CDMA signal is dropped to the downlink relay frequency that is positioned at the 110MHz-580MHz scope transmits; Slave receives host signal, and the signal that the downlink relay frequency will be reduced to after base station frequency also will reduce is issued the travelling carriage use.Up direction principle and up direction are similar: slave receiving mobile signal also drops to the uplink relay frequency that is positioned at the 110MHz-580MHz scope with the frequency of this signal and transmits; Main frame receives the slave signal, and the uplink relay frequency is reduced to the frequency of mobile station signal and issues the base station.
Uplink relay frequency of the present invention and downlink relay frequency are all between 110MHz-580MHz, the implementer can select according to actual needs, carry out signal transmission in this frequency range and can make transmission range wider and can walk around some big barriers, be very suitable for implementing in vast rural area.And, frequency shift system of the present invention is supported single channel, multichannel and wideband transmission, therefore, frequency shift system of the present invention can be only moves on to far-end with a frequency of base station signal by the relaying frequency signal, or 2 of base station signal or a plurality of frequency are moved on to far-end by the relaying frequency signal; Or all carrier frequency in the band frequency scope of base station signal are all moved on to far-end by the relaying frequency.
And the main frame among Fig. 2 both can communicate also and can communicate by base station coupler and base station by antenna and base station, and the former is called " aerial coupling ", the latter is called " directly coupling ".Coupler has signal allocation and synthetic function, the base station coupler can be given the downlink signal allocation certain proportion of base station the reception of main frame, passes to the base station after also the signal that the upward signal and the antenna for base station of main frame can be received synthesizes according to a certain percentage.Generally by the connection between coaxial radio frequency cable realization coupler and base station and the main frame.
The principle schematic of " aerial coupling " and " directly being coupled " when Fig. 3 and Fig. 4 are respectively single channel, down direction: main frame is moved carrier frequency f3 with the carrier frequency f1 of base station signal and is transmitted, and slave is moved carrier frequency f3 again f1 and issued travelling carriage then; Up direction: slave is moved carrier frequency f4 with the carrier frequency f2 of travelling carriage and is transmitted, and main frame is moved carrier frequency f4 again f2 and issued the base station then.
Fig. 5 and Fig. 6 are respectively the main frame and the slave block diagram of frequency shift system of the present invention.As shown in Figure 5, the main frame of frequency shift system of the present invention comprises donor unit, main frame converter unit and main frame TU Trunk Unit.Donor unit links to each other with the main frame converter unit, and the main frame converter unit links to each other with main frame TU Trunk Unit.As shown in Figure 6, the slave of frequency shift system of the present invention comprises slave TU Trunk Unit, slave converter unit and retransmission unit.Slave TU Trunk Unit links to each other with the slave converter unit, and the slave converter unit links to each other with retransmission unit.
At down direction: donor unit receives base station signal and it is issued the main frame converter unit, the main frame converter unit as required a frequency of base station signal or a plurality of frequency or a band frequency scope are moved the downlink relay frequency and will move after signal issue main frame TU Trunk Unit, this downlink relay frequency is selected arbitrarily as required by the implementer between 110MHz-580MHz.Main frame TU Trunk Unit sends to slave with the signal of main frame converter unit.Slave TU Trunk Unit receives host signal and sends it to the slave converter unit, and the slave converter unit is reduced to the frequency of this signal the frequency of origination base station signal and issues retransmission unit, and the base station signal after retransmission unit will reduce is issued travelling carriage.For example: is that the signal of 164.500MHz transmits in the air with the signal frequency conversion of the 954.000MHz of base station down to the relaying frequency, and it is that the descending 954.000MHz signal of base station passes to mobile station terminal that slave receives behind this 164.500MHz frequency conversion again.
At up direction: retransmission unit receiving mobile signal is also issued the slave converter unit with it, the slave converter unit as required a frequency of mobile station signal or a plurality of frequency or a band frequency scope are moved the uplink relay frequency and will move after signal issue slave TU Trunk Unit, this uplink relay frequency is between 110MHz-580MHz, be different from the downlink relay frequency, select arbitrarily as required by the implementer.Slave TU Trunk Unit sends to main frame with the signal of slave converter unit.Main frame TU Trunk Unit receives the slave signal and sends it to the main frame converter unit, and the main frame converter unit is reduced to the frequency of this signal the frequency of original mobile station signal and issues donor unit, and the mobile station signal after donor unit will be reduced is issued the base station.For example: the signal frequency conversion that slave will be received the up 909.000MHz of travelling carriage transmits for the 154.500MHz signal in the air to the relaying frequency, and it is that the up 909.000MHz signal of travelling carriage passes to the base station that main frame receives behind this 154.500MHz frequency conversion again.
The detailed structure view of main frame and slave when Fig. 7 and Fig. 8 are respectively frequency shift system employing of the present invention " aerial coupling " mode.Shown in Fig. 7 and 8, donor unit further comprises donor antenna, duplexer, low noise amplifier and power amplifier.Donor antenna links to each other with duplexer, duplexer respectively with low noise amplifier (be called for short: LNA) and power amplifier (be called for short: power amplifier) link to each other.Donor antenna is used to receive descending base station signal and sends up mobile station signal; Duplexer is used to provide the path of uplink and downlink transmission; LNA is used to amplify descending base station signal; Power amplifier is used to amplify up mobile station signal.The structure and the donor unit of main frame TU Trunk Unit and slave TU Trunk Unit and retransmission unit are similar, all comprise antenna, duplexer, LNA and power amplifier, see Fig. 7 and Fig. 8 for details.Main frame converter unit and slave converter unit not only comprise frequency converter in a preferred embodiment, comprise that also filter is used for the filter bag external signal, to obtain the signal of required frequency.The detailed circuit diagram of main frame converter unit and slave converter unit is referring to Figure 15 and Figure 16.
Embodiment 2:
The present invention also provides a kind of frequency-shift repeater.Fig. 9 is the schematic diagram of frequency-shift repeater of the present invention.As we know from the figure, this frequency-shift repeater has the function of main frame and slave simultaneously, and the simplest frequency shift system can be made up of two frequency-shift repeaters, and one links to each other with the base station, serves as main frame; Another links to each other with travelling carriage, serves as slave.As shown in Figure 9, frequency-shift repeater of the present invention comprises: receiving element, converter unit and transmitting element.Wherein, receiving element receives the signal from base station, travelling carriage and frequency-shift repeater; Converter unit carries out frequency translation to the signal that receives, and when receiving base station signal, the base station signal frequency translation is arrived the downlink relay frequency; When receiving mobile station signal, the mobile station signal frequency translation is arrived the uplink relay frequency; When receiving the upward signal of frequency-shift repeater, described upward signal frequency is reduced to the mobile station signal frequency; When receiving the downstream signal of frequency-shift repeater, described downstream signal frequencies is reduced to the base station signal frequency.Transmitting element sends the signal through frequency conversion.Wherein, the frequency of the frequency of downstream signal and upward signal at 110MHz between the 580MHz.
When the signal that receives is base station signal, transmitting element will be issued through the signal of frequency conversion and be positioned near the frequency-shift repeater of travelling carriage, by it signal will be reduced to base station signal again and issue travelling carriage; When the signal that receives is mobile station signal, transmitting element will be issued through the signal of frequency conversion and be positioned near the frequency-shift repeater in base station, by it signal will be reduced to mobile station signal and issue the base station; When the signal that receives was the downstream signal of other frequency-shift repeater, this frequency-shift repeater was reduced to its frequency the frequency of base station signal and issues travelling carriage; When the signal that receives was the upward signal of other frequency-shift repeater, this frequency-shift repeater was reduced to its frequency the frequency of mobile station signal and issues the base station.
The schematic diagram of three kinds of different modes when Figure 10-Figure 12 adopts " directly coupling " for the frequency shift system of being made up of the frequency-shift repeater of present embodiment.When adopting " directly coupling " mode between base station and the donor unit, according to the intensity of system's needs signal, its donor unit also can comprise coupler, duplexer; Separate if signal of base station is transmitting-receiving, direct-coupled mode also can only comprise 2 couplers.
Figure 13 and Figure 14 are respectively two kinds of circuit diagrams of frequency-shift repeater of the present invention.As shown in the figure, this frequency-shift repeater also comprises and is used for control unit that each several part is controlled and the power subsystem that electric energy is provided for each several part.Wherein, control unit has parameter detecting, fault warning, configuration function is set etc., for example: can detect the working temperature of each module, the operational factor of each module etc., the alarm of equipment excess temperature, overpower alarm, the alarm of local oscillator losing lock etc. can be provided with frequency, parameters such as ALC are set.MODEM is mainly used to carry out telecommunication, can mode be long-range that equipment is managed by data, SMS, GPRS etc., and equipment also can report administrative center with equipment running status by MODEM.In addition, the mixer among Figure 14 is used for when a plurality of carrier frequency are carried out frequency spectrum shift, to the merging of multiple signals.
Figure 15 and Figure 16 are the converter unit detailed circuit diagram of present embodiment frequency-shift repeater.Wherein Figure 15 is the single-conversion circuit diagram.As shown in figure 15, for the situation of a shift frequency, this converter unit comprises filter, amplifier, frequency mixer, amplifier, filter etc.; The signal that enters converter unit carries out mixing with suitable high accuracy local oscillator and produces output signal through filter after amplification, again through amplifying and the laggard line output of filtering.Adopt one time shift frequency, the efficient of system can be than higher, but owing to all be to adopt band pass filter, so require the relaying frequency ratio cleaner, just can not exert an influence to system.
Figure 16 is the double conversion circuit diagram.As shown in figure 16, for the situation of secondary shift frequency, this converter unit comprises filter, amplifier, frequency mixer, amplifier, filter, frequency mixer, amplifier, filter etc.; The signal that enters converter unit is through filter, after amplification, carry out mixing and produce intermediate-freuqncy signal with suitable high accuracy local oscillator, again through behind amplification and the intermediate frequency filtering, produce passband and only carry out secondary mixing generation output signal again, again through amplifying and the laggard line output of filtering for the intermediate-freuqncy signal of signal bandwidth.
Frequency shift system of the present invention adopts the mode of main frame and slave combination, and the transmission frequency between main frame and the slave is determined at 110MHz to select the relaying frequency of 2 groups of frequencies (frequency range) as uplink and downlink between the 580MHz arbitrarily in this scope.The frequency-shift repeater of this low frequency and frequency shift system have not only overcome the shortcoming of existing repeater, have the following advantages simultaneously:
1. because frequency is less to the aerial attenuation of the radio wave between the 580MHz at 110MHz, the distance of transmission can be far away, so the distance between main frame of the present invention and the slave can be far away.
2. because frequency is stronger to the radio wave diffracting power between the 580MHz at 110MHz, can under the situation that certain obstacle stops, realize the transmission of electric wave.Be that its main frame and slave can allow certain barrier to stop.
Frequency-shift repeater of the present invention is suitable for the project of "Communication with Every Village" needs, can solve much the problem that the mobile network in the mountain village, factories and miness, pastoral area or the one-shot job district that intercept away from cities and towns, by mountain covers well.These places are in communication always because distance is remote, environment abominable, it is huge to drop into blind spot uses traditional means to solve these points and will waste great amount of manpower and material resources.
Above embodiment only is used to illustrate the present invention, but not is used to limit the present invention.
Claims (11)
1. the method for transmitting signals of a frequency-shift repeater comprises the signal transmission of down direction and up direction, it is characterized in that:
The transmission of the signal of described down direction comprises: receive base station signal, with the frequency translation of base station signal to the downlink relay frequency and the signal after sending shift frequency; Receive the signal behind the described shift frequency, send to travelling carriage after the signal frequency behind the shift frequency being reduced to the frequency of described base station signal;
The transmission of the signal of described up direction comprises: the receiving mobile signal, with the frequency translation of mobile station signal to the uplink relay frequency and the signal after sending shift frequency; Receive the signal behind the described shift frequency, send to the base station after the signal frequency behind the shift frequency being reduced to the frequency of described mobile station signal;
Described downlink relay frequency and described uplink relay frequency at 110MHZ between the 580MHz.
2. method according to claim 1 is characterized in that, described downlink relay frequency or uplink relay frequency are single frequency or an a plurality of frequency or a band frequency scope.
3. method according to claim 1 is characterized in that, down direction receives base station signal and up direction sends to the base station with signal, is to communicate by antenna or base station coupler and base station.
4. a frequency-shift repeater is characterized in that, described frequency-shift repeater comprises: receiving element, converter unit and transmitting element;
Described receiving element is used to receive the signal from base station, travelling carriage and frequency-shift repeater;
Described converter unit when receiving base station signal, arrives the downlink relay frequency with the base station signal frequency translation; When receiving mobile station signal, the mobile station signal frequency translation is arrived the uplink relay frequency; When receiving the upward signal of frequency-shift repeater, described upward signal frequency is reduced to the mobile station signal frequency; When receiving the downstream signal of frequency-shift repeater, described downstream signal frequencies is reduced to the base station signal frequency;
Described transmitting element is used to send the signal through frequency conversion;
Described downlink relay frequency and described uplink relay frequency at 110MHZ between the 580MHz.
5. frequency-shift repeater according to claim 4 is characterized in that, described downlink relay frequency or uplink relay frequency are single frequency or an a plurality of frequency or a band frequency scope.
6. frequency-shift repeater according to claim 4 is characterized in that, described receiving element is to communicate by antenna or base station coupler and base station.
7. a frequency shift system comprises main frame and slave, it is characterized in that,
Described main frame comprises: donor unit, main frame converter unit and main frame TU Trunk Unit,
Described donor unit links to each other with the main frame converter unit: receive base station signal and it is issued the main frame converter unit at down direction, receive the signal of main frame converter unit and it is issued the base station at up direction;
Described main frame converter unit links to each other with main frame TU Trunk Unit: at down direction the frequency translation of base station signal is issued main frame TU Trunk Unit to the downlink relay frequency and with it, at up direction the signal frequency that main frame TU Trunk Unit receives is reduced to the mobile station signal frequency and issues donor unit;
Described main frame TU Trunk Unit: at down direction the signal of main frame converter unit is sent to slave, receive the slave signal and issue the main frame converter unit at up direction;
Described slave comprises: slave TU Trunk Unit, slave converter unit and retransmission unit,
Described slave TU Trunk Unit links to each other with described slave converter unit, receives host signal and it is issued the slave converter unit at down direction, receives the signal of slave converter unit and it is issued main frame at up direction;
Described slave converter unit links to each other with described retransmission unit, be reduced to the frequency of described base station signal and it is issued retransmission unit in the frequency of down direction, the mobile station signal frequency translation that retransmission unit receives is issued slave TU Trunk Unit to the uplink relay frequency and with it at up direction with host signal;
Described retransmission unit sends to travelling carriage at down direction with the signal of slave converter unit, issues the slave converter unit at up direction receiving mobile signal and with it;
Described downlink relay frequency and described uplink relay frequency at 110MHZ between the 580MHz.
8. frequency shift system according to claim 7 is characterized in that, described downlink relay frequency or uplink relay frequency are single frequency or an a plurality of frequency or a band frequency scope.
9. frequency shift system according to claim 7 is characterized in that described donor unit further comprises donor antenna, duplexer, low noise amplifier and power amplifier,
Described donor antenna links to each other with described duplexer, receives descending base station signal, and sends up mobile station signal;
Described duplexer connects described low noise amplifier and power amplifier respectively, is used to provide the path of uplink and downlink transmission;
Described low noise amplifier links to each other with described main frame converter unit, is used to amplify descending base station signal;
Described power amplifier links to each other with described main frame converter unit, is used to amplify up mobile station signal.
10. frequency shift system according to claim 7 is characterized in that described donor unit further comprises base station coupler and duplexer;
Described base station coupler links to each other with described duplexer, is used to provide the transmission channel of the uplink and downlink signal of base station and duplexer;
Described duplexer links to each other with described main frame converter unit, is used to provide the transmission channel of the uplink and downlink of main frame converter unit.
11. frequency shift system according to claim 7 is characterized in that, described donor unit is the base station coupler;
Described base station coupler links to each other with described main frame converter unit, is used to provide the transmission channel of the uplink and downlink signal of base station and main frame converter unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100654068A CN101286785A (en) | 2007-04-13 | 2007-04-13 | Frequency shifting direct amplifying station, frequency shifting system and signal transmitting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100654068A CN101286785A (en) | 2007-04-13 | 2007-04-13 | Frequency shifting direct amplifying station, frequency shifting system and signal transmitting method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101719783A (en) * | 2009-12-18 | 2010-06-02 | 中兴通讯股份有限公司 | Method for controlling selective band repeater, device and selective band repeater |
| CN102378202A (en) * | 2010-08-19 | 2012-03-14 | 中国移动通信集团甘肃有限公司 | Radio network coverage method, device and system |
| CN107113126A (en) * | 2015-06-09 | 2017-08-29 | 华为技术有限公司 | A kind of signal processing method, apparatus and system |
| CN109640399A (en) * | 2019-01-11 | 2019-04-16 | 江苏三恒科技股份有限公司 | A kind of mining wireless communication system |
| CN111586705A (en) * | 2020-04-10 | 2020-08-25 | 超讯通信股份有限公司 | Indoor 5G wireless coverage method based on wireless frequency shift technology |
| CN112511286A (en) * | 2020-10-19 | 2021-03-16 | 福州速职时代网络科技有限公司 | Frequency shift duplex conversion method and device |
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2007
- 2007-04-13 CN CNA2007100654068A patent/CN101286785A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101719783A (en) * | 2009-12-18 | 2010-06-02 | 中兴通讯股份有限公司 | Method for controlling selective band repeater, device and selective band repeater |
| CN101719783B (en) * | 2009-12-18 | 2013-12-18 | 中兴通讯股份有限公司 | Method for controlling selective band repeater, device and selective band repeater |
| CN102378202A (en) * | 2010-08-19 | 2012-03-14 | 中国移动通信集团甘肃有限公司 | Radio network coverage method, device and system |
| CN102378202B (en) * | 2010-08-19 | 2014-06-04 | 中国移动通信集团甘肃有限公司 | Radio network coverage method, device and system |
| CN107113126A (en) * | 2015-06-09 | 2017-08-29 | 华为技术有限公司 | A kind of signal processing method, apparatus and system |
| CN109640399A (en) * | 2019-01-11 | 2019-04-16 | 江苏三恒科技股份有限公司 | A kind of mining wireless communication system |
| CN111586705A (en) * | 2020-04-10 | 2020-08-25 | 超讯通信股份有限公司 | Indoor 5G wireless coverage method based on wireless frequency shift technology |
| CN111586705B (en) * | 2020-04-10 | 2023-04-14 | 超讯通信股份有限公司 | Indoor 5G wireless coverage method based on wireless frequency shift technology |
| CN112511286A (en) * | 2020-10-19 | 2021-03-16 | 福州速职时代网络科技有限公司 | Frequency shift duplex conversion method and device |
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