CN105471490B - Repeater and signal processing method thereof - Google Patents
Repeater and signal processing method thereof Download PDFInfo
- Publication number
- CN105471490B CN105471490B CN201410453761.2A CN201410453761A CN105471490B CN 105471490 B CN105471490 B CN 105471490B CN 201410453761 A CN201410453761 A CN 201410453761A CN 105471490 B CN105471490 B CN 105471490B
- Authority
- CN
- China
- Prior art keywords
- radio frequency
- signal
- integrated circuit
- downlink
- uplink
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
Landscapes
- Mobile Radio Communication Systems (AREA)
- Transceivers (AREA)
- Radio Relay Systems (AREA)
Abstract
The invention discloses a repeater and a signal processing method thereof, which are used for reducing the weight of the repeater, reducing the volume of the repeater and reducing the power consumption of the repeater. The wireless sensor network comprises a return antenna, an access antenna, a first link unit, a second link unit and a baseband integrated circuit, wherein the first link unit comprises a first radio frequency front end module and a first radio frequency integrated circuit; the second link unit comprises a second radio frequency front end module and a second radio frequency integrated circuit, the access antenna, the second radio frequency front end module, the second radio frequency integrated circuit and the baseband integrated circuit are sequentially connected through a signal link, and the baseband integrated circuit is further connected with the second radio frequency front end module and the second radio frequency integrated circuit through a control link.
Description
Technical Field
The invention relates to the technical field of wireless communication, in particular to a repeater and a signal processing method thereof.
Background
With the development of mobile communication technology, the rapidly increasing mobile communication users pose great challenges to the capacity of mobile communication networks. On the other hand, the construction of mobile communication base stations is becoming more and more difficult due to constraints of environmental issues such as base station radiation, and seamless continuous coverage of mobile communication networks by base station equipment is also becoming more and more difficult.
Against this background, repeaters are one of the main technical means to solve the above problems. The repeater is placed in the coverage edge area of the base station, and the coverage area of the base station can be extended, so that the network capacity is increased. As shown in fig. 1, a schematic diagram of a basic mechanism of a repeater is shown, and the repeater includes two sets of transceiving links, one set is an uplink and the other set is a downlink, where the uplink is used to receive a wireless signal transmitted by a terminal and send the wireless signal to a base station after filtering and amplification, and the downlink is used to receive a wireless signal transmitted by the base station and send the wireless signal to the terminal after filtering and amplification. Specifically, each link includes the following devices: a return antenna, an access antenna, a Switch (Switch) or a Duplexer (Duplexer) (where the Switch or Duplexer selects one of the Switch in a duplex manner, the Switch in a time division duplex system, and the Duplexer in a frequency division duplex system), a low noise Amplifier (LAN), a radio frequency Amplifier module (GAIN), a band-pass filter (BPF), a Mixer (Mixer), an Analog-to-Digital Converter (ADC), a Programmable control unit (FPGA), a Digital-to-Analog Converter (DAC), and a Power Amplifier (PA). For the downlink, a link connected with the backhaul antenna is referred to as a receiving link (i.e., a link between the Switch/Duplex and the FPGA), and a link connected with the access antenna is referred to as a transmitting link (i.e., a link between the FPGA and the Switch/Duplex); for the uplink, the link connected to the access antenna is called the receive link (i.e., the link between Switch/Duplex and FPGA), and the link connected to the backhaul antenna is called the transmit link (i.e., the link between FPGA and Switch/Duplex).
The functions of the devices are described as follows:
a return antenna: the repeater is used for communicating with a base station, receiving a wireless signal of the base station to the repeater and transmitting the wireless signal of the repeater to the base station;
accessing an antenna: the repeater is used for communicating with a terminal, receiving a terminal wireless signal to the repeater and transmitting the repeater wireless signal to the terminal;
switch/duplexer: the device is used for selecting uplink and downlink of wireless signals, a switch is used in a TDD (time division duplex) system, and a duplexer is used in an FDD (frequency division duplex) system;
front-end frequency-selecting filter: the frequency selection is carried out on signals which are arranged at the front end of a receiving link and exist in an FDD system, and the frequency selection is arranged in a duplexer;
the radio frequency amplification module: for amplifying the wireless signal;
a low noise amplifier: the low-noise amplifier is arranged at the front end of the receiving link and is used for carrying out low-noise amplification on the received wireless signals;
a power amplifier: the power amplifier is arranged at the tail end of the transmitting link and used for amplifying the power of the wireless signal;
band-pass filter: both the receiving link and the transmitting link are adopted for filtering out-of-band signals;
a mixer: the receiving link down-converts the signal and down-converts the radio frequency signal to an intermediate frequency; the transmitting link up-converts the signal and up-converts the intermediate frequency signal to radio frequency;
a digital-to-analog converter: for converting the digital signal to an analog signal;
an analog-to-digital converter: for converting the analog signal to a digital signal;
FPGA: the device is used for carrying out digital filtering, amplitude adjustment and other processing on the digital signal;
a synchronization module: the TDD system is used for synchronizing uplink and downlink time slots, exists in the TDD system and is arranged in the FPGA;
a power management module: and the system is responsible for power supply, voltage conversion and the like of the whole system.
Based on the repeater structure shown in fig. 1, the downlink signal processing flow is as follows: the downlink signal from the base station enters the Switch/duplex through the return antenna, then the wireless signal enters the FPGA after being processed by devices such as LNA, Gain, BPF, Mixer and ADC in sequence, the wireless signal processed by the FPGA is processed by the devices such as DAC digital-to-analog conversion, then the wireless signal is processed by the devices such as Mixer, BPF and Gain, and finally the wireless signal is transmitted out of the coverage terminal through PA, Switch/duplex and an access terminal antenna. The uplink signal processing flow is as follows: the wireless signal from the terminal enters the Switch/filter through the antenna at the access end, then enters the FPGA through devices such as LNA, Gain, BPF, Mixer and ADC, the signal processed by the FPGA is subjected to digital-to-analog conversion by the DAC, then is processed by the devices such as BPF, Mixer and Gain, and finally is transmitted to the base station through the PA, the Switch/duplex, the antenna at the return end and the like.
Therefore, the repeater in the prior art needs to use various radio frequency chips and devices, so that the repeater is heavy in weight and large in size, and the existing repeater is high in power consumption due to numerous devices.
Disclosure of Invention
The embodiment of the invention provides a repeater and a signal processing method thereof, which are used for reducing the weight of the repeater, reducing the volume of the repeater and reducing the power consumption of the repeater.
The embodiment of the invention provides a repeater, which comprises a return antenna, an access antenna, a first link unit, a second link unit and a baseband integrated circuit, wherein:
the first link unit is used for processing wireless signals of a downlink receiving link and an uplink transmitting link, and comprises a first radio frequency front end module and a first radio frequency integrated circuit, wherein the backhaul antenna, the first radio frequency front end module, the first radio frequency integrated circuit and the baseband integrated circuit are sequentially connected through a signal link, and the baseband integrated circuit is also respectively connected with the first radio frequency front end module and the first radio frequency integrated circuit through a control link;
the second link unit is used for processing wireless signals of a downlink transmitting link and an uplink receiving link, and comprises a second radio frequency front end module and a second radio frequency integrated circuit, the access antenna, the second radio frequency front end module, the second radio frequency integrated circuit and the baseband integrated circuit are sequentially connected through a signal link, and the baseband integrated circuit is also respectively connected with the second radio frequency front end module and the second radio frequency integrated circuit through a control link;
the baseband integrated circuit is used for processing the wireless signal received by the signal link and outputting the wireless signal to the first radio frequency integrated circuit or the second radio frequency integrated circuit; and the control circuit is used for controlling the working frequency band, the gain, the transmitting power and the switch state of the first radio frequency integrated circuit, the second radio frequency integrated circuit, the first front end module and the second front end module through the control link.
The embodiment of the invention provides a downlink signal processing method based on the repeater, which comprises the following steps:
the first radio frequency front-end module performs low-noise amplification and frequency selection on the downlink radio frequency signal received by the return antenna and then sends the downlink radio frequency signal to the first radio frequency integrated circuit module;
the first radio frequency integrated circuit module is used for filtering and amplifying a received downlink radio frequency signal, then carrying out down-conversion on the processed downlink radio frequency signal to obtain a downlink intermediate frequency analog signal, carrying out analog-to-digital conversion on the downlink intermediate frequency analog signal to obtain a downlink digital signal and then sending the downlink digital signal to the baseband integrated circuit;
the baseband integrated circuit performs baseband filtering and gain adjustment on the downlink digital signal and then sends the downlink digital signal to the second radio frequency integrated circuit;
the second radio frequency integrated circuit performs digital-to-analog conversion on the received downlink digital signal to obtain a downlink intermediate frequency analog signal, performs up-conversion on the obtained downlink intermediate frequency analog signal to obtain a downlink radio frequency signal, performs filtering and amplification processing on the obtained downlink radio frequency signal, and sends the processed downlink radio frequency signal to the second radio frequency front-end module;
and the second radio frequency front-end module performs power amplification and filtering on the received downlink radio frequency signal and then sends the downlink radio frequency signal through the access antenna.
The embodiment of the invention provides an uplink signal processing method based on the repeater, which comprises the following steps:
the second radio frequency front end module performs low noise amplification and frequency selection on the uplink radio frequency signal received by the access antenna and then sends the uplink radio frequency signal to the second radio frequency integrated circuit module;
the second radio frequency integrated circuit module is used for filtering and amplifying the received uplink radio frequency signal, performing down-conversion on the processed uplink radio frequency signal to obtain an uplink intermediate frequency analog signal, performing analog-to-digital conversion on the uplink intermediate frequency analog signal to obtain an uplink digital signal and then sending the uplink digital signal to the baseband integrated circuit;
the baseband integrated circuit performs baseband filtering and gain adjustment on the uplink digital signal and sends the uplink digital signal to the first radio frequency integrated circuit;
the first radio frequency integrated circuit performs digital-to-analog conversion on the received uplink digital signal to an uplink intermediate frequency analog signal, performs up-conversion on the obtained uplink intermediate frequency analog signal to obtain an uplink radio frequency signal, performs filtering and amplification processing on the obtained uplink radio frequency signal, and sends the processed uplink radio frequency signal to the first radio frequency front-end module;
and the first radio frequency front-end module performs power amplification and filtering on the received uplink radio frequency signal and then transmits the uplink radio frequency signal through the return antenna.
In the repeater and the signal processing method thereof provided by the embodiment of the invention, the functions of a downlink receiving link and an uplink sending link are realized through the first link unit, the functions of a downlink transmitting link and an uplink receiving link are realized through the second link, and the control function is realized through the baseband integrated circuit.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of a repeater in the prior art;
FIG. 2 is a schematic structural diagram of a repeater in the embodiment of the present invention;
fig. 3 is a schematic diagram of a downlink signal processing flow according to an embodiment of the present invention;
fig. 4 is a schematic diagram of an uplink signal processing flow according to an embodiment of the present invention.
Detailed Description
In order to reduce the weight of the repeater, reduce the volume of the repeater and reduce the power consumption of the repeater, the embodiment of the invention provides the repeater.
The preferred embodiments of the present invention will be described below with reference to the accompanying drawings of the specification, it being understood that the preferred embodiments described herein are merely for illustrating and explaining the present invention, and are not intended to limit the present invention, and that the embodiments and features of the embodiments in the present invention may be combined with each other without conflict.
In the embodiment of the invention, a Front End radio frequency Module (FEM) is used for integrating the functions of a switch/duplexer, a low noise amplifier, a Front End frequency selection filter and a PA of a transmitting link. In specific implementation, according to different duplexing modes, in a TDD system, the front end rf module may integrate functions of a switch, a low noise amplifier, and a PA of a transmission link, and in an FDD system, the front end rf module may integrate functions of a Duplexer (Duplexer), a front end frequency-selective filter, a low noise amplifier, and a PA of a transmission link. The repeater is characterized in that a Radio Frequency Integrated Circuit (RFIC) is used for integrating functions of a Radio Frequency amplification module, a Band-pass filter, a mixer, an analog-to-digital converter and a digital-to-analog converter, a baseband Integrated Circuit (BBIC) is used for integrating functions of an FPGA and a synchronous module (applied to a TDD system), and a Power Management unit (PMIC) is used for realizing Power Management of the repeater, supplying Power to each module contained in the repeater, and being responsible for voltage conversion and the like.
As shown in fig. 2, a schematic structural diagram of a repeater provided in an embodiment of the present invention includes a backhaul antenna 11, an access antenna 12, a first link unit 13, a second link unit 14, and a baseband integrated circuit 15, where:
the first link unit 13 is configured to process wireless signals of a downlink receiving link and an uplink transmitting link, and includes a first rf front-end module 131 and a first rf integrated circuit 132, where the backhaul antenna 11, the first rf front-end module 131, the first rf integrated circuit 132, and the baseband integrated circuit 15 are sequentially connected through a signal link, and the baseband integrated circuit 15 is further connected to the first rf front-end module 131 and the first rf integrated circuit 132 through a control link, respectively. The first radio frequency front-end module can be used for carrying out low-noise amplification, frequency selection and other processing on a wireless signal of a receiving link; performing power amplification and filtering processing on a wireless signal of a transmitting link; the first radio frequency integrated circuit can be used for processing the wireless signals of the receiving link such as filtering, amplification, down-conversion, analog-to-digital conversion and the like; and the wireless signal of the transmitting link is processed by analog-to-digital conversion, up-conversion, filtering, amplification and the like; the baseband integrated circuit may be configured to perform baseband filtering, gain adjustment, and other processing on the wireless signal sent by the first rf integrated circuit.
The second link unit 14 is configured to process wireless signals of a downlink transmission link and an uplink reception link, and includes a second rf front-end module 141 and a second rf integrated circuit 142, the access antenna 12, the second rf front-end module 141, the second rf integrated circuit 142, and the baseband integrated circuit 15 are sequentially connected through a signal link, and the baseband integrated circuit 15 is further connected with the second rf front-end module 141 and the second rf integrated circuit 142 through a control link, respectively. The second radio frequency front-end module can be used for carrying out low-noise amplification, frequency selection and other processing on the wireless signals of the receiving link; performing power amplification and filtering processing on a wireless signal of a transmitting link; the second radio frequency integrated circuit can be used for processing the wireless signals of the receiving link such as filtering, amplification, down-conversion, analog-to-digital conversion and the like; and the wireless signal of the transmitting link is processed by analog-to-digital conversion, up-conversion, filtering, amplification and the like; the baseband integrated circuit may be configured to perform baseband filtering, gain adjustment, and other processing on the wireless signal sent by the second rf integrated circuit.
The baseband integrated circuit 15 is configured to process a wireless signal received through a signal link and output the processed wireless signal to the first rf integrated circuit 132 or the second rf integrated circuit 142; and is used for controlling the working frequency band, gain, transmission power, switching state, etc. of the first rf integrated circuit 132, the second rf integrated circuit 142, the first rf front-end module 131, and the second rf front-end module 141 through the control link.
In specific implementation, when the repeater is applied to an FDD system, an uplink and a downlink are always on, and an uplink signal and a downlink signal are transmitted by using different frequencies, so that a filter for selecting a frequency of a wireless signal can be integrated in the first/second front-end radio frequency module, and whether the received wireless signal needs to be processed in the uplink or the downlink is determined according to the selected frequency. That is, in the FDD system, the first/second rf front-end module may also be used to select a frequency for the wireless signal.
When the repeater is applied to a TDD system, the baseband integrated circuit can also integrate the function of demodulating the synchronous signal, and the baseband integrated circuit controls the first/second radio frequency front end module and the first/second radio frequency integrated circuit to turn on/off the uplink or turn on/off the downlink according to the demodulated synchronous signal.
The repeater provided in the embodiment of the present invention further includes a power management module 16, which is respectively connected to the first rf front-end module 131, the first rf integrated circuit 132, the second rf front-end module 141, the second rf integrated circuit 142, and the baseband integrated circuit 15 through an electrical control link source, and is configured to perform power management on the repeater, such as power supply and voltage conversion on each module.
In the repeater provided by the embodiment of the invention, the functions of a switch/duplexer, a low-noise amplifier, a front-end frequency-selecting filter and a PA of a transmitting link are integrated by using a radio frequency front-end module, the functions of a radio frequency amplification module, a band-pass filter, a mixer, an analog-to-digital converter and a digital-to-analog converter are integrated by using a radio frequency integrated circuit, the functions of a baseband integrated circuit integrated control and synchronization module (applied to a TDD system) are used, and meanwhile, the power management unit is used for carrying out power management on the repeater.
Based on the same inventive concept, the embodiments of the present invention further provide an uplink signal processing method and a downlink signal processing method, respectively, and since the principle of solving the problem of the signal processing method is similar to that of the repeater, the implementation of the signal processing method can refer to the implementation of the method, and repeated details are not repeated.
If the repeater provided by the embodiment of the invention is applied to a TDD system, the baseband integrated circuit obtains the synchronous signal according to the base station signal received by the return antenna side, and controls the uplink of the repeater to be opened/closed or the downlink to be opened/closed according to the obtained synchronous signal, only one link can be opened at the same time, when the uplink is opened, the downlink is closed, and when the downlink is opened, the uplink is closed.
Specifically, the downlink signal may be processed according to the flow shown in fig. 3, and the uplink signal may be processed according to the flow shown in fig. 4.
As shown in fig. 3, an implementation flow diagram of the downlink signal processing method provided in the embodiment of the present invention includes the following steps:
s31, the first rf front-end module performs low-noise amplification and frequency selection on the downlink rf signal received by the backhaul antenna, and then sends the downlink rf signal to the first rf integrated circuit module.
S32, the first RF integrated circuit module filters and amplifies the received downlink RF signal, down-converts the processed downlink RF signal to obtain a downlink intermediate frequency analog signal, and performs analog-to-digital conversion on the downlink intermediate frequency analog signal to obtain a downlink digital signal, and sends the downlink digital signal to the baseband integrated circuit.
And S33, the baseband integrated circuit performs baseband filtering and gain adjustment on the downlink digital signal and sends the downlink digital signal to the second radio frequency integrated circuit.
And S34, the second radio frequency integrated circuit performs digital-to-analog conversion on the received downlink digital signal into a downlink intermediate frequency analog signal, performs up-conversion on the obtained downlink intermediate frequency analog signal to obtain a downlink radio frequency signal, performs filtering and amplification on the obtained downlink radio frequency signal, and sends the processed downlink radio frequency signal to the second radio frequency front-end module.
And S35, the second radio frequency front-end module performs power amplification and filtering on the received downlink radio frequency signal and then sends the downlink radio frequency signal through the access antenna.
As shown in fig. 4, an implementation flow diagram of the downlink signal processing method provided in the embodiment of the present invention includes the following steps:
and S41, the second radio frequency front end module performs low noise amplification and frequency selection on the uplink radio frequency signal received by the access antenna and then sends the uplink radio frequency signal to the second radio frequency integrated circuit module.
And S42, the second radio frequency integrated circuit module filters and amplifies the received uplink radio frequency signal, down-converts the processed uplink radio frequency signal to obtain an uplink intermediate frequency analog signal, and performs analog-to-digital conversion on the uplink intermediate frequency analog signal to obtain an uplink digital signal, and then sends the uplink digital signal to the baseband integrated circuit.
And S43, the baseband integrated circuit performs baseband filtering and gain adjustment on the uplink digital signal and sends the uplink digital signal to the first radio frequency integrated circuit.
And S44, the first radio frequency integrated circuit performs digital-to-analog conversion on the received uplink digital signal into an uplink intermediate frequency analog signal, performs up-conversion on the obtained uplink intermediate frequency analog signal to obtain an uplink radio frequency signal, performs filtering and amplification processing on the obtained uplink radio frequency signal, and sends the processed uplink radio frequency signal to the first radio frequency front-end module.
And S45, the first radio frequency front end module performs power amplification and filtering on the received uplink radio frequency signal and then sends the uplink radio frequency signal through the return antenna.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (8)
1. A repeater, comprising: a backhaul antenna, an access antenna, a first link unit, a second link unit, and a baseband integrated circuit, wherein:
the first link unit is used for processing wireless signals of a downlink receiving link and an uplink transmitting link, and comprises a first radio frequency front end chip and a first radio frequency integrated circuit, wherein the backhaul antenna, the first radio frequency front end chip, the first radio frequency integrated circuit and the baseband integrated circuit are sequentially connected through a signal link, and the baseband integrated circuit is also respectively connected with the first radio frequency front end chip and the first radio frequency integrated circuit through a control link;
the second link unit is used for processing wireless signals of a downlink transmitting link and an uplink receiving link and comprises a second radio frequency front end chip and a second radio frequency integrated circuit, the access antenna, the second radio frequency front end chip, the second radio frequency integrated circuit and the baseband integrated circuit are sequentially connected through a signal link, and the baseband integrated circuit is also respectively connected with the second radio frequency front end chip and the second radio frequency integrated circuit through a control link;
the baseband integrated circuit is used for processing the wireless signal received by the signal link and outputting the wireless signal to the first radio frequency integrated circuit or the second radio frequency integrated circuit; and the control circuit is used for controlling the working frequency band, the gain, the transmitting power and the switching state of the first radio frequency integrated circuit, the second radio frequency integrated circuit, the first radio frequency front-end chip and the second radio frequency front-end chip through the control link;
the first/second radio frequency front-end chip is specifically used for performing low noise amplification and frequency selection processing on a wireless signal of a receiving link; performing power amplification and filtering processing on a wireless signal of a transmitting link;
the first/second radio frequency integrated circuit is specifically used for filtering, amplifying, down-converting and analog-to-digital converting the wireless signal of the receiving link; and carrying out analog-to-digital conversion, up-conversion, filtering and amplification processing on a wireless signal of the transmitting link;
the baseband integrated circuit is specifically configured to perform baseband filtering and gain adjustment processing on a wireless signal.
2. The repeater of claim 1, wherein the first/second RF front end chips further comprise filters for frequency selective operation if the repeater is used in a Frequency Division Duplex (FDD) system.
3. The repeater as claimed in claim 1, wherein if the repeater is applied in a TDD system, the baseband ic is further configured to demodulate a synchronization signal and control the first/second rf ic, the first/second rf front-end chip to turn on/off an uplink or turn on/off a downlink according to the demodulated synchronization signal.
4. The repeater according to any claim of claim 1 to 3, further comprising:
and the power management unit is respectively connected with the first radio frequency front-end chip, the first radio frequency integrated circuit, the second radio frequency front-end chip, the second radio frequency integrated circuit and the baseband integrated circuit through a power control link and is used for carrying out power management on the repeater.
5. A downlink signal processing method of a repeater is characterized by comprising the following steps:
the first radio frequency front-end chip performs low-noise amplification and frequency selection on the downlink radio frequency signal received by the return antenna and then sends the downlink radio frequency signal to the first radio frequency integrated circuit module;
the first radio frequency integrated circuit module is used for filtering and amplifying the received downlink radio frequency signal, performing down-conversion on the processed downlink radio frequency signal to obtain a downlink intermediate frequency analog signal, performing analog-to-digital conversion on the downlink intermediate frequency analog signal to obtain a downlink digital signal and sending the downlink digital signal to the baseband integrated circuit;
the baseband integrated circuit performs baseband filtering and gain adjustment on the downlink digital signal and then sends the downlink digital signal to a second radio frequency integrated circuit;
the second radio frequency integrated circuit performs digital-to-analog conversion on the received downlink digital signal to obtain a downlink intermediate frequency analog signal, performs up-conversion on the obtained downlink intermediate frequency analog signal to obtain a downlink radio frequency signal, performs filtering and amplification processing on the obtained downlink radio frequency signal, and sends the processed downlink radio frequency signal to a second radio frequency front-end chip;
and the second radio frequency front-end chip performs power amplification and filtering on the received downlink radio frequency signal and then sends the downlink radio frequency signal through the access antenna.
6. The method of claim 5, wherein if the repeater is used in a TDD system, further comprising:
the baseband integrated circuit receives and demodulates the synchronization signal; and
and controlling the first/second radio frequency front-end chip and the first/second radio frequency integrated circuit to open a downlink and close an uplink according to the synchronous signal.
7. An uplink signal processing method of a repeater is characterized by comprising the following steps:
the second radio frequency front-end chip performs low-noise amplification and frequency selection on the uplink radio frequency signal received by the access antenna and then sends the uplink radio frequency signal to the second integrated circuit module;
the second integrated circuit module is used for filtering and amplifying the received uplink radio frequency signal, performing down-conversion on the processed uplink radio frequency signal to obtain an uplink intermediate frequency analog signal, performing analog-to-digital conversion on the uplink intermediate frequency analog signal to obtain an uplink digital signal and then sending the uplink digital signal to the baseband integrated circuit;
the baseband integrated circuit performs baseband filtering and gain adjustment on the uplink digital signal and then sends the uplink digital signal to a first radio frequency integrated circuit;
the first radio frequency integrated circuit performs digital-to-analog conversion on the received uplink digital signal to an uplink intermediate frequency analog signal, performs up-conversion on the obtained uplink intermediate frequency analog signal to obtain an uplink radio frequency signal, performs filtering and amplification processing on the obtained uplink radio frequency signal, and sends the processed uplink radio frequency signal to a first radio frequency front-end chip;
the first radio frequency front-end chip performs power amplification and filtering on the received uplink radio frequency signal and then sends the uplink radio frequency signal through the return antenna.
8. The method of claim 7, wherein if the repeater is used in a TDD system, further comprising:
the baseband integrated circuit receives and demodulates the synchronization signal; and
and controlling the first/second radio frequency front-end chip and the first/second radio frequency integrated circuit to open an uplink and close a downlink according to the synchronous signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410453761.2A CN105471490B (en) | 2014-09-05 | 2014-09-05 | Repeater and signal processing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410453761.2A CN105471490B (en) | 2014-09-05 | 2014-09-05 | Repeater and signal processing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105471490A CN105471490A (en) | 2016-04-06 |
| CN105471490B true CN105471490B (en) | 2020-05-12 |
Family
ID=55608846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410453761.2A Active CN105471490B (en) | 2014-09-05 | 2014-09-05 | Repeater and signal processing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105471490B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107872269A (en) * | 2016-09-27 | 2018-04-03 | 罗森伯格（上海）通信技术有限公司 | Multifrequency digital micro repeater |
| CN108768440A (en) * | 2018-05-31 | 2018-11-06 | 西安蜂语信息科技有限公司 | Signal processing method and device |
| WO2021134617A1 (en) * | 2019-12-31 | 2021-07-08 | 华为技术有限公司 | Signal processing system, signal processing module, and terminal apparatus |
| CN113904698B (en) * | 2020-06-22 | 2023-02-07 | 华为技术有限公司 | Communication equipment, signal transceiving method thereof and switching circuit |
| CN111866899A (en) * | 2020-06-28 | 2020-10-30 | 四川省大见通信技术有限公司 | Indoor microdistribution system and method for 5G mobile communication |
| CN111884699A (en) * | 2020-08-28 | 2020-11-03 | 莱盟通信科技(上海)有限公司 | Subway wireless relay amplifier with data storage function |
| CN112770333B (en) * | 2020-12-11 | 2023-04-14 | 武汉虹信科技发展有限责任公司 | 5G NR wireless distributed frequency shift system and frequency shift method |
| CN114449662B (en) * | 2021-12-31 | 2023-04-11 | 重庆智铸华信科技有限公司 | Frequency conversion processing circuit and access device |
| CN114567361B (en) * | 2022-04-28 | 2022-07-15 | 南京燧锐科技有限公司 | FDD/TDD dual-mode microwave direct amplification relay station |
| CN117729627B (en) * | 2024-02-07 | 2024-05-14 | 广州市瀚云信息技术有限公司 | Method for realizing simultaneous synchronization of 4G signal and 5G signal of wireless repeater |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200941613Y (en) * | 2006-08-02 | 2007-08-29 | 冠日通讯科技（深圳）有限公司 | In-band frequency shifter system, radio transmission relaying system and frequency shifting directly releasing station |
| CN201004639Y (en) * | 2006-12-27 | 2008-01-09 | 京信通信技术(广州)有限公司 | An intelligent frequency band selection repeater system based on digital middle frequency |
| CN201282457Y (en) * | 2008-08-04 | 2009-07-29 | 林志华 | Digital frequency shift discharging-directly station |
| CN201550113U (en) * | 2009-11-25 | 2010-08-11 | 福建京奥通信技术有限公司 | Digital microwave frequency shift repeater station |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100382470C (en) * | 2002-06-11 | 2008-04-16 | 华为技术有限公司 | Soft base station system based on fiber optic stretch and synchronous method thereof |
| CN1219410C (en) * | 2003-05-07 | 2005-09-14 | 深圳市一通金泰科技股份有限公司 | Intelligent base station signal relay amplifying and transmitting device and method |
| US20070243832A1 (en) * | 2004-03-15 | 2007-10-18 | Hyung-Weon Park | Multimode/Multiband Mobile Station and Method for Operating the Same |
| CN101742671B (en) * | 2009-12-11 | 2013-01-30 | 泉州市迈韦通信技术有限公司 | Wireless digital repeater station with carrier scheduling function and method for realizing carrier scheduling |
| CN203761391U (en) * | 2014-03-12 | 2014-08-06 | 成都福兰特电子技术有限公司 | MIMO based novel LTE (Long Term Evolution) digital optical fiber repeater |
-
2014
- 2014-09-05 CN CN201410453761.2A patent/CN105471490B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200941613Y (en) * | 2006-08-02 | 2007-08-29 | 冠日通讯科技（深圳）有限公司 | In-band frequency shifter system, radio transmission relaying system and frequency shifting directly releasing station |
| CN201004639Y (en) * | 2006-12-27 | 2008-01-09 | 京信通信技术(广州)有限公司 | An intelligent frequency band selection repeater system based on digital middle frequency |
| CN201282457Y (en) * | 2008-08-04 | 2009-07-29 | 林志华 | Digital frequency shift discharging-directly station |
| CN201550113U (en) * | 2009-11-25 | 2010-08-11 | 福建京奥通信技术有限公司 | Digital microwave frequency shift repeater station |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105471490A (en) | 2016-04-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105471490B (en) | Repeater and signal processing method thereof | |
| KR102197339B1 (en) | Transceiver converting communication mode | |
| US9077393B2 (en) | Apparatus and method for a multi-band radio operating in a wireless network | |
| EP3843285A1 (en) | Distributed antenna system architectures | |
| CN104137424A (en) | Wireless device with filters to support co-existence in adjacent frequency bands | |
| WO2018208967A2 (en) | Variable channelized bandwidth booster | |
| US20180139627A1 (en) | Divided signal booster system | |
| CN109104232B (en) | Wireless relay equipment and wireless communication system | |
| EP2717482B1 (en) | Radio transceiver | |
| CN102882573A (en) | Multiple-input multiple-output signal transmission realization method, device and system | |
| CN107623544B (en) | Intelligent repeater and communication method based on same | |
| CN105763306A (en) | Communication equipment and method for wireless communication, communication terminal and communication control method | |
| EP3602803B1 (en) | Multi-band radio-frequency reception | |
| CN104320790A (en) | TDD (Time Division Duplex)-LTE (Long Term Evolution) multiple-input-multiple-output indoor coverage system | |
| US9344264B2 (en) | Reversible radio architecture between transmission and reception functions in a mobile communication system | |
| CN103347264B (en) | The high-power covering method of TDD mobile communication system and device | |
| CN203243526U (en) | Indoor coverage accessing device and indoor coverage system | |
| EP2733976A1 (en) | System, device, and method for transmitting multi-input-multi-output signals | |
| CN202565269U (en) | TD-LTE chamber branch MIMO frequency conversion system | |
| KR100799679B1 (en) | Microwave repeater using frequency division duplexing and time division duplexing method | |
| CN100531005C (en) | A method and device for relay amplification in TD-SCDMA system | |
| CN112770333B (en) | 5G NR wireless distributed frequency shift system and frequency shift method | |
| CN108023634A (en) | A kind of chain type cascades TD-LTE frequency-shift repeater station systems | |
| CN201550113U (en) | Digital microwave frequency shift repeater station | |
| CN203368477U (en) | Relay device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: No. 29 Financial Street, Xicheng District, Beijing 100032 Applicant after: China Mobile Communication Group Co., Ltd. Address before: No. 29 Financial Street, Xicheng District, Beijing 100032 Applicant before: China Mobile Communications Group Corp. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |