CN109104232B - Wireless relay equipment and wireless communication system - Google Patents
Wireless relay equipment and wireless communication system Download PDFInfo
- Publication number
- CN109104232B CN109104232B CN201811114787.9A CN201811114787A CN109104232B CN 109104232 B CN109104232 B CN 109104232B CN 201811114787 A CN201811114787 A CN 201811114787A CN 109104232 B CN109104232 B CN 109104232B
- Authority
- CN
- China
- Prior art keywords
- wireless
- downlink
- radio frequency
- uplink
- wireless signal
- 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
- 238000004891 communication Methods 0.000 title claims abstract description 27
- 238000012545 processing Methods 0.000 claims abstract description 68
- 230000003321 amplification Effects 0.000 claims abstract description 18
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 18
- 238000001914 filtration Methods 0.000 claims description 24
- 238000004458 analytical method Methods 0.000 claims description 14
- 238000006243 chemical reaction Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 6
- 238000010295 mobile communication Methods 0.000 description 5
- 230000007547 defect Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/155—Ground-based stations
- H04B7/15564—Relay station antennae loop interference reduction
- H04B7/15585—Relay station antennae loop interference reduction by interference cancellation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/155—Ground-based stations
- H04B7/15528—Control of operation parameters of a relay station to exploit the physical medium
- H04B7/15542—Selecting at relay station its transmit and receive resources
Abstract
The embodiment of the invention provides wireless relay equipment and a wireless communication system, relates to the field of wireless relay equipment, and can only carry out relay amplification on wireless signals of fixed PLMN. The apparatus comprises: the system comprises an access antenna, a coverage antenna and a wireless relay module; the access antenna is used for receiving downlink wireless signals of the base station and sending the downlink wireless signals to the wireless relay module, and meanwhile, sending uplink wireless signals sent after being processed by the wireless relay module to the base station; the coverage antenna is used for receiving an uplink wireless signal sent by the terminal, sending the uplink wireless signal to the wireless relay module and sending a downlink wireless signal sent by the wireless relay module after processing to the terminal; and the wireless relay module is used for amplifying and processing a target uplink and downlink wireless signal matched with the PLMN type to which the wireless relay equipment belongs in the received uplink and downlink wireless signals and then sending the amplified and processed target uplink and downlink wireless signal to the access antenna and the coverage antenna.
Description
Technical Field
The present invention relates to the field of wireless relay devices, and in particular, to a wireless relay device and a wireless communication system.
Background
In modern society, with the development of mobile communication technology, the rapidly increasing number of mobile communication users poses a great challenge to the capacity of a mobile communication network. On the other hand, the construction of the mobile communication base station is more and more difficult due to the constraint of environmental protection problems such as base station radiation, and the seamless coverage of the mobile communication network by the base station equipment is more and more difficult. Under such circumstances, a wireless relay device such as a mobile phone companion is one of the main technical means for solving the above problems. The wireless relay equipment is placed in the coverage edge area of the base station, and the coverage range of the base station can be expanded. The current wireless relay devices are classified into analog wireless relays and digital wireless relays.
However, whether the relay device is an analog wireless relay device or a general digital relay device, it is basically implemented by a combination of separate devices or modules, and the separate devices can only implement a certain function, such as lna (low Noise amplifier) implementing low Noise amplification, which serves to reduce link Noise. Although the link combined by a plurality of devices realizes the basic function of signal amplification relay, the link combined by a plurality of devices has some problems in specific use: BPFs (BAND-pass filters) used in links basically adopt media or acoustic surface filters, and have poor out-of-BAND rejection capability, which is basically for realizing far-end signal rejection (such as rejection of WCDMA frequency BAND by GSM900M frequency BAND), and for the same BAND signal rejection capability among operators, the BPFs are poor in rejection capability, so that wireless relay devices among different operators amplify adjacent frequency signals of other operators in addition to their own frequency signals. And the operator only carries out network optimization on the wireless signal of the operator, so that a lot of multipath interference and intermodulation interference are generated, and the service performance and the user experience are seriously influenced.
Disclosure of Invention
Embodiments of the present invention provide a wireless relay device and a wireless communication system, which can perform amplification processing only on uplink and downlink wireless signals of a PLMN of an operator to which the PLMN belongs, and perform maximum interference filtering on adjacent channel signals of other operators.
In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:
in a first aspect, a wireless relay device is provided, including: the system comprises an access antenna, a wireless relay module and a covering antenna;
the access antenna is used for receiving a downlink wireless signal sent by the first base station and sending the downlink wireless signal to the wireless relay module, and the position of the access antenna is positioned in the coverage range of the first base station;
the coverage antenna is used for receiving an uplink wireless signal sent by the second terminal and sending the uplink wireless signal to the wireless relay module, and the position of the second terminal is located in the coverage range of the coverage antenna;
the wireless relay module is used for sending a target downlink wireless signal matched with the PLMN (public land mobile network) type to which the wireless relay equipment belongs in the downlink wireless signals sent by the access antenna to the coverage antenna;
the wireless relay module is also used for sending a target uplink wireless signal matched with the PLMN type to which the wireless relay equipment belongs in the uplink wireless signals sent by the coverage antenna to the access antenna;
the coverage antenna is also used for sending a target downlink wireless signal sent by the wireless relay module to a first terminal corresponding to the downlink wireless signal;
the access antenna is also used for sending the target uplink wireless signal sent by the wireless relay module to a second base station corresponding to the target uplink wireless signal.
Optionally, the wireless relay module includes a baseband processing unit, and the baseband processing unit includes: the device comprises a protocol analysis subunit, a control management subunit and a digital filtering subunit;
the protocol analysis subunit is used for analyzing the downlink wireless signals sent by the access antenna so as to acquire the PLMN type of the downlink wireless signals;
the control management subunit is used for determining a target downlink wireless signal in the downlink wireless signal and a target uplink wireless signal in the uplink wireless signal received by the coverage antenna according to the pre-stored PLMN type and the PLMN type of the downlink wireless signal acquired by the protocol analysis subunit; the pre-stored PLMN type is the PLMN type of an operator to which the wireless relay equipment belongs;
the digital filtering subunit is used for filtering the downlink wireless signals except the target downlink wireless signals determined by the control management subunit from the downlink wireless signals and sending the target downlink wireless signals to the covering antenna;
and the digital filtering subunit is also used for filtering uplink wireless signals except the target uplink wireless signal determined by the control management subunit from the uplink wireless signals sent by the coverage antenna, and sending the target uplink wireless signal to the access antenna.
Optionally, the protocol analyzing subunit is further configured to analyze a downlink wireless signal sent by the access antenna to obtain signal strength and signal quality of the downlink wireless signal;
the control management subunit is also used for configuring uplink filtering parameters and downlink filtering parameters of the digital filtering unit according to the pre-stored PLMN type and target parameters of the downlink wireless signals acquired by the protocol analysis unit;
the target parameters include: PLMN category, signal strength, and signal quality.
Optionally, the wireless relay module further includes: an outdoor radio frequency front end and an indoor radio frequency front end;
the first end of the outdoor radio frequency front end is connected with the access antenna, and the second end of the outdoor radio frequency front end is connected with the first end of the baseband processing unit and used for sending the downlink wireless signal sent by the access antenna to the baseband processing unit;
the outdoor radio frequency front end is also used for sending the target uplink signal sent by the baseband processing unit to the access antenna;
the outdoor radio frequency front end is also used for processing an uplink channel and a downlink channel between the baseband processing unit and the access antenna so that only one communication channel exists between the outdoor radio frequency front end and the access antenna;
the first end of the indoor radio frequency front end is connected with the covering antenna, and the second end of the indoor radio frequency front end is connected with the second end of the baseband processing unit and used for sending the uplink wireless signal sent by the covering antenna to the baseband processing unit;
the indoor radio frequency front end is also used for sending the target downlink signal sent by the baseband processing unit to the coverage antenna;
the indoor radio frequency front end is also used for processing an uplink channel and a downlink channel between the baseband processing unit and the coverage antenna, so that only one communication channel exists between the indoor radio frequency front end and the coverage antenna.
Optionally, an outdoor transceiver unit is further disposed between the second end of the outdoor radio frequency front end and the first end of the baseband processing unit, and an indoor transceiver unit is further disposed between the indoor radio frequency front end and the second end of the baseband processing unit;
the outdoor transceiver unit is used for sequentially carrying out low-noise amplification, automatic gain control and analog-to-digital conversion on a downlink wireless signal sent by the outdoor radio frequency front end and then sending the downlink wireless signal to the baseband processing unit;
the outdoor transceiving unit is also used for sequentially carrying out digital-to-analog conversion, automatic level control and power amplification on the target uplink signal sent by the baseband processing unit and then sending the target uplink signal to the outdoor radio frequency front end;
the indoor transceiver unit is used for sequentially carrying out low-noise amplification, automatic gain control and analog-to-digital conversion on an uplink wireless signal sent by the indoor radio frequency front end and then sending the uplink wireless signal to the baseband processing unit;
the indoor transceiver unit is also used for sequentially carrying out digital-to-analog conversion, automatic level control and power amplification on the target downlink signal sent by the baseband processing unit and then sending the target downlink signal to the indoor radio frequency front end.
Optionally, when the wireless relay device is a time division duplex TDD system, both the outdoor radio frequency front end and the indoor radio frequency front end are switches;
the outdoor radio frequency front end is used for switching an uplink channel and a downlink channel between the baseband processing unit and the access antenna according to a preset time sequence, and the indoor radio frequency front end is used for switching the uplink channel and the downlink channel between the baseband processing unit and the coverage antenna according to the preset time sequence.
Optionally, when the wireless relay device is a frequency division duplex FDD system, both the outdoor radio frequency front end and the indoor radio frequency front end are duplexers;
the outdoor radio frequency front end is used for combining an uplink channel and a downlink channel between the baseband processing unit and the outdoor radio frequency front end so that only one communication channel exists between the outdoor radio frequency front end and the coverage antenna;
the indoor radio frequency front end is also used for separating a communication channel between the coverage antenna and the indoor radio frequency front end, so that the communication channel between the indoor radio frequency front end and the baseband processing unit comprises an uplink channel and a downlink channel.
In a second aspect, a wireless communication system is provided, which includes the wireless relay apparatus as provided in the first aspect.
The embodiment of the invention provides a wireless relay device and a wireless communication system, wherein the wireless relay device comprises: the system comprises an access antenna, a wireless relay module and a covering antenna; the access antenna is used for receiving a downlink wireless signal sent by the first base station and sending the downlink wireless signal to the wireless relay module, and the position of the access antenna is positioned in the coverage range of the first base station; the coverage antenna is used for receiving an uplink wireless signal sent by the second terminal and sending the uplink wireless signal to the wireless relay module, and the position of the second terminal is located in the coverage range of the coverage antenna; the wireless relay module is used for sending a target downlink wireless signal matched with the PLMN (public land mobile network) type to which the wireless relay equipment belongs in the downlink wireless signals sent by the access antenna to the coverage antenna; the wireless relay module is also used for sending a target uplink wireless signal matched with the PLMN type to which the wireless relay equipment belongs in the uplink wireless signals sent by the coverage antenna to the access antenna; the coverage antenna is also used for sending a target downlink wireless signal sent by the wireless relay module to a first terminal corresponding to the downlink wireless signal; the access antenna is also used for sending the target uplink wireless signal sent by the wireless relay module to a second base station corresponding to the target uplink wireless signal. In the technical scheme provided by the embodiment of the invention, the wireless relay module in the wireless relay equipment can only send the uplink and downlink wireless signals which are matched with the PLMN type of the operator and are received by the wireless relay module to the access antenna or the coverage antenna, so that the wireless relay equipment only forwards the wireless signals of the operator to which the wireless relay equipment belongs, the defects of adjacent frequency interference, intermodulation interference and the like in the existing wireless relay equipment are avoided, and the user experience is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an analog wireless relay device provided in the prior art;
fig. 2 is a schematic structural diagram of a digital wireless relay device provided in the prior art;
fig. 3 is a schematic structural diagram of a wireless relay device according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of another wireless relay device according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of another wireless relay device according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of another wireless relay device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, in the embodiments of the present invention, words such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "exemplary" or "e.g.," an embodiment of the present invention is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.
It should be noted that, in the embodiments of the present invention, "of", "corresponding" and "corresponding" may be sometimes used in combination, and it should be noted that, when the difference is not emphasized, the intended meaning is consistent.
For the convenience of clearly describing the technical solutions of the embodiments of the present invention, in the embodiments of the present invention, the words "first", "second", and the like are used for distinguishing the same items or similar items with basically the same functions and actions, and those skilled in the art can understand that the words "first", "second", and the like are not limited in number or execution order.
The existing wireless relay equipment is divided into analog wireless relay equipment and digital wireless relay equipment, and as shown in fig. 1, the analog wireless relay equipment comprises two sets of radio frequency links, one set of radio frequency links is a downlink and the other set of radio frequency links is an uplink; a downlink receives a wireless signal transmitted by a base station through an access antenna, and the wireless signal is amplified and filtered and then sent to a terminal through a covering antenna; an uplink receives a wireless signal transmitted by a terminal through a covering antenna, and the wireless signal is amplified and filtered and then is transmitted to a base station through an access antenna; the specific link comprises the following modules or devices: an access antenna, a cover antenna, a switch (sw (switch), used in a TDD (Time Division duplex) system) or a duplexer (dup (duplex), used in an FDD (Frequency Division duplex) system), a Low Noise Amplifier (LNA), a band-pass filter (BPF), a Voltage controlled Gain Amplifier (VGA), which may also be a combination of a Gain module and an attenuator), an Automatic Level Control device (ALC, Automatic Level Control), and a power Amplifier module (PA).
Referring to fig. 2, the digital wireless relay device includes two sets of rf links, one set is a downlink and the other set is an uplink; a downlink receives a wireless signal transmitted by a base station through an access antenna, and the wireless signal is amplified and filtered and then sent to a terminal through a covering antenna; the uplink receives wireless signals transmitted by the terminal through the covering antenna, and the wireless signals are amplified, filtered and transmitted to the base station through the access antenna. The specific link comprises the following modules or devices: an access antenna, a cover antenna, a switch (SW, for TDD system) or a duplexer (DUP, for FDD system), a Low Noise Amplifier (LNA), a Band Pass Filter (BPF), a voltage controlled gain amplifier (VGA, which may also be a combination of a gain module and an attenuator), a Mixer (Mixer), an Analog-to-Digital Converter (ADC), a Programmable logic device (FPGA), a Digital-to-Analog Converter (DAC), a Local Oscillator (LO), an automatic level control device (ALC), and a power amplifier module (PA).
As can be seen from the above description and the contents of fig. 1 and fig. 2, the existing wireless relay devices are all implemented by separate devices or module combinations, although a link formed by combining a plurality of devices can implement the basic function of signal amplification and relay, since BPFs (Band-Pass filters) used in the link basically adopt media or acoustic surface filters, the out-of-Band rejection capability thereof is very poor, and basically, the BPFs are used for implementing far-end signal rejection (such as the rejection of the GSM900M frequency Band to the WCDMA frequency Band), and the rejection capability of the same Band signal among operators is very poor, so that the wireless relay devices among different operators can amplify adjacent frequency signals of other operators simultaneously besides the own frequency signal, and the operators only perform network optimization on the own wireless signal, thereby generating many adjacent frequency interferences and intermodulation interferences, the service performance and the user experience are seriously affected.
In view of the above problem, referring to fig. 3, an embodiment of the present invention provides a wireless relay apparatus, including: an access antenna 31, a wireless relay module 32 and a coverage antenna 33;
an access antenna 31, configured to receive a downlink wireless signal sent by a first base station and send the downlink wireless signal to the wireless relay module 32, where the position of the access antenna 31 is located in a coverage area of the first base station; for example, the base station of any operator is the first base station as long as the wireless relay device exists in the coverage area of the base station;
the coverage antenna 33 is configured to receive an uplink wireless signal sent by the second terminal and send the uplink wireless signal to the wireless relay module 32, where the position of the second terminal is located in a coverage range of the coverage antenna 33;
a wireless relay module 32, configured to send a target downlink wireless signal, which is matched with a public land mobile network PLMN category to which the wireless relay device belongs, in the downlink wireless signal sent by the access antenna 31 to the coverage antenna 33;
the wireless relay module 32 is further configured to send a target uplink wireless signal, which is matched with the PLMN category to which the wireless relay device belongs, in the uplink wireless signal sent by the coverage antenna 33 to the access antenna 31;
the coverage antenna 33 is further configured to transmit the target downlink wireless signal transmitted by the wireless relay module 32 to the first terminal corresponding to the downlink wireless signal;
the access antenna 31 is further configured to transmit the target uplink wireless signal transmitted by the wireless relay module 32 to the second base station corresponding to the target uplink wireless signal.
In the technical solution provided in the above embodiment, because the wireless relay module in the wireless relay device can only send the uplink and downlink wireless signals, which are matched with the PLMN category of the operator, of all the uplink and downlink wireless signals received by the wireless relay module to the access antenna or the coverage antenna, the wireless relay device only forwards the wireless signals of the operator to which the wireless relay device belongs, thereby avoiding the defects of adjacent channel interference, intermodulation interference and the like in the existing wireless relay device, and improving the user experience.
Optionally, as shown in fig. 4, the wireless relay module 32 includes a baseband processing unit 321, where the baseband processing unit 321 includes: a protocol parsing subunit 3211, a control management subunit 3212, and a digital filtering subunit 3213;
a protocol analyzing subunit 3211, configured to analyze the downlink wireless signal sent by the access antenna 31 to obtain a PLMN category of the downlink wireless signal; specifically, the functions of the protocol analysis subunit generally exist in MODEM, and part of the functions are set in the baseband processing unit to complete the technical purpose of PLMN analysis and identification in wireless communication;
the control management subunit 3212 is configured to determine a target downlink wireless signal in the downlink wireless signal and a target uplink wireless signal in the uplink wireless signal received by the coverage antenna 33 according to a pre-stored PLMN category and a PLMN category of the downlink wireless signal acquired by the protocol analysis subunit 3211; the pre-stored PLMN type is the PLMN type of an operator to which the wireless relay equipment belongs;
a digital filtering subunit 3213, configured to filter downlink wireless signals in the downlink wireless signals except for the target downlink wireless signal determined by the control management subunit 3212, and send the target downlink wireless signal to the coverage antenna 33;
the digital filtering subunit 3213 is further configured to filter, from the uplink wireless signals sent by the coverage antenna 33, uplink wireless signals other than the target uplink wireless signal determined by the control management subunit 3212, and send the target uplink wireless signal to the access antenna 31.
It should be noted that, in practice, PLMN categories of downlink wireless signals sent by base stations of different operators are different, and each PLMN category may be specific to downlink wireless signals of multiple frequencies, and a downlink wireless signal of each frequency is only specific to an uplink wireless signal of one frequency, and no PLMN exists in information carried by the uplink wireless signal, so the protocol analysis subunit provided in the embodiment of the present invention only analyzes the downlink signal sent by the base station, thereby determining the PLMN category of the downlink wireless signal of each frequency, and then the management subunit may determine a required target downlink signal and a target uplink signal corresponding to the target downlink signal according to the prestored PLMN category, and finally the digital filter may perform filtering according to the information determined by the management subunit.
Since the position of the wireless relay device may change at any time and the surrounding environment may also change at any time, the ratio of the target downlink wireless signal to the target uplink wireless signal, which is useful in the downlink wireless signal received by the access antenna and the uplink wireless signal received by the coverage antenna, may change at any time, and it is possible that the target wireless signal (the target uplink wireless signal and the target downlink wireless signal) required in all the wireless signals (the uplink wireless signal and the downlink wireless signal) received by the wireless relay device is only a small part of the total wireless signal (for example, the target uplink signal occupies a small part of the uplink wireless signal or the target downlink wireless signal occupies a small part of the downlink wireless signal), then in order to enable the digital filtering unit to better suppress and filter the wireless signals except the target wireless signal, then, the most suitable suppression parameters need to be set according to the signal strength and the signal quality of each wireless signal to obtain the best suppression filtering effect, so optionally, as shown in fig. 4, the protocol analysis subunit 3211 is further configured to analyze the downlink wireless signal sent by the access antenna 31 to obtain the signal strength and the signal quality of the downlink wireless signal;
the control management subunit 3212 is further configured to configure uplink filtering parameters and downlink filtering parameters of the digital filtering unit according to a pre-stored PLMN category and target parameters of the downlink wireless signals acquired by the protocol parsing unit;
the target parameters include: PLMN category, signal strength, and signal quality.
Because there are two channels, that is, an uplink channel and a downlink channel (which may also be referred to as an uplink radio frequency link and a downlink radio frequency link) formed by hardware in an actual wireless relay device, but because there is only one physical interface between a base station and a terminal, there is only one communication channel between an access antenna and the base station and between a coverage antenna and the terminal, there is a need for a device in the wireless relay device to combine the two channels inside the wireless relay device into one channel (a frequency division duplex system) or switch the two channels at regular time (a time division duplex system), so that the wireless relay module 32 is further optional, as shown in fig. 5, and further includes: an outdoor radio frequency front end 322 and an indoor radio frequency front end 323;
a first end of the outdoor rf front end 322 is connected to the access antenna 31, and a second end of the outdoor rf front end 322 is connected to a first end of the baseband processing unit 321, and is configured to send the downlink wireless signal sent by the access antenna 31 to the baseband processing unit 321;
the outdoor rf front end 322 is further configured to send the target uplink signal sent by the baseband processing unit 321 to the access antenna 31;
the outdoor rf front end 322 is further configured to process an uplink channel and a downlink channel between the baseband processing unit 321 and the access antenna 31, so that only one communication channel exists between the outdoor rf front end 322 and the access antenna 31;
a first end of the indoor rf front end 323 is connected to the coverage antenna 33, and a second end of the indoor rf front end 323 is connected to a second end of the baseband processing unit 321, and is configured to send the uplink wireless signal sent by the coverage antenna 33 to the baseband processing unit 321;
the indoor rf front end 323 is further configured to send the target downlink signal sent by the baseband processing unit 321 to the coverage antenna 33;
the indoor rf front end 323 is further configured to process an uplink channel and a downlink channel between the baseband processing unit 321 and the coverage antenna 33, so that only one communication channel exists between the indoor rf front end 323 and the coverage antenna 33.
Illustratively, when the wireless relay device is a time division duplex TDD system, both the outdoor rf front end 322 and the indoor rf front end 323 are switches;
the outdoor rf front end 322 is configured to switch an uplink channel and a downlink channel between the baseband processing unit 321 and the access antenna 31 according to a preset timing, and the indoor rf front end 323 is configured to switch an uplink channel and a downlink channel between the baseband processing unit 321 and the coverage antenna 33 according to a preset timing.
Illustratively, when the wireless relay device is a frequency division duplex FDD system, the outdoor rf front end 322 and the indoor rf front end 323 are duplexers;
the outdoor rf front end 322 is configured to combine an uplink channel and a downlink channel between the baseband processing unit 321 and the outdoor rf front end 322, so that only one communication channel exists between the outdoor rf front end 322 and the coverage antenna 33;
the indoor rf front end 323 is further configured to separate a communication channel between the coverage antenna 33 and the indoor rf front end 323, so that the communication channel between the indoor rf front end 323 and the baseband processing unit 321 includes an uplink channel and a downlink channel.
As the wireless relay device not only plays a role in signal selection and forwarding, but also needs to perform certain amplification processing on the selected signal, further optionally, as shown in fig. 6, an outdoor transceiver unit 324 is further disposed between the second end of the outdoor rf front end 322 and the first end of the baseband processing unit 321, and an indoor transceiver unit 325 is further disposed between the indoor rf front end 323 and the second end of the baseband processing unit 321;
the outdoor transceiver unit 324 is configured to perform low noise amplification, automatic gain control, and analog-to-digital conversion on the downlink wireless signal sent by the outdoor radio frequency front end 322 in sequence, and send the downlink wireless signal to the baseband processing unit 321;
the outdoor transceiver unit 324 is further configured to sequentially perform digital-to-analog conversion, automatic level control and power amplification on the target uplink signal sent by the baseband processing unit 321, and send the target uplink signal to the outdoor radio frequency front end 322;
specifically, the outdoor transceiver unit may be a combination of a plurality of devices with different functions, and each device may be a device as shown in fig. 1 and fig. 2, which is not limited herein;
the indoor transceiver unit 325 is configured to sequentially perform low noise amplification, automatic gain control, and analog-to-digital conversion on an uplink wireless signal sent by the indoor radio frequency front end 323, and send the uplink wireless signal to the baseband processing unit 321;
the indoor transceiver unit 325 is further configured to sequentially perform digital-to-analog conversion, automatic level control, and power amplification on the target downlink signal sent by the baseband processing unit 321, and send the target downlink signal to the indoor rf front end 323; specifically, the indoor transceiver unit may also be a combination of a plurality of devices with different functions, and each device may also be a device as shown in fig. 1 and fig. 2, which is not limited herein.
The embodiment of the invention also provides a wireless communication system which comprises the wireless relay equipment.
The embodiment of the invention provides a wireless relay device and a wireless communication system, wherein the wireless relay device comprises: the system comprises an access antenna, a wireless relay module and a covering antenna; the access antenna is used for receiving a downlink wireless signal sent by the first base station and sending the downlink wireless signal to the wireless relay module, and the position of the access antenna is positioned in the coverage range of the first base station; the coverage antenna is used for receiving an uplink wireless signal sent by the second terminal and sending the uplink wireless signal to the wireless relay module, and the position of the second terminal is located in the coverage range of the coverage antenna; the wireless relay module is used for sending a target downlink wireless signal matched with the PLMN (public land mobile network) type to which the wireless relay equipment belongs in the downlink wireless signals sent by the access antenna to the coverage antenna; the wireless relay module is also used for sending a target uplink wireless signal matched with the PLMN type to which the wireless relay equipment belongs in the uplink wireless signals sent by the coverage antenna to the access antenna; the coverage antenna is also used for sending a target downlink wireless signal sent by the wireless relay module to a first terminal corresponding to the downlink wireless signal; the access antenna is also used for sending the target uplink wireless signal sent by the wireless relay module to a second base station corresponding to the target uplink wireless signal. In the technical scheme provided by the embodiment of the invention, the wireless relay module in the wireless relay equipment can only send the uplink and downlink wireless signals which are matched with the PLMN type of the operator and are received by the wireless relay module to the access antenna or the coverage antenna, so that the wireless relay equipment only forwards the wireless signals of the operator to which the wireless relay equipment belongs, the defects of adjacent frequency interference, intermodulation interference and the like in the existing wireless relay equipment are avoided, and the user experience is improved.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. A wireless relay device, comprising: the system comprises an access antenna, a wireless relay module and a covering antenna;
the access antenna is used for receiving a downlink wireless signal sent by a first base station and sending the downlink wireless signal to the wireless relay module, and the position of the access antenna is located in the coverage range of the first base station;
the coverage antenna is used for receiving an uplink wireless signal sent by a second terminal and sending the uplink wireless signal to the wireless relay module, and the position of the second terminal is located in the coverage range of the coverage antenna;
the wireless relay module is configured to send a target downlink wireless signal, which is matched with a PLMN category to which the wireless relay device belongs, in the downlink wireless signals sent by the access antenna to the coverage antenna;
the wireless relay module is further configured to send a target uplink wireless signal, which is matched with the PLMN category to which the wireless relay device belongs, in the uplink wireless signals sent by the coverage antenna to the access antenna;
the coverage antenna is further configured to send the target downlink wireless signal sent by the wireless relay module to a first terminal corresponding to the target downlink wireless signal;
the access antenna is further used for sending the target uplink wireless signal sent by the wireless relay module to a second base station corresponding to the target uplink wireless signal;
the wireless relay module includes a baseband processing unit, and the baseband processing unit includes: the device comprises a protocol analysis subunit, a control management subunit and a digital filtering subunit;
the protocol analysis subunit is configured to analyze the downlink wireless signal sent by the access antenna to obtain a PLMN type of the downlink wireless signal;
the control management subunit is configured to determine the target downlink wireless signal in the downlink wireless signal and the target uplink wireless signal in the uplink wireless signal received by the coverage antenna according to a pre-stored PLMN category and a PLMN category of the downlink wireless signal acquired by the protocol analysis subunit; the pre-stored PLMN type is the PLMN type of an operator to which the wireless relay equipment belongs;
the digital filtering subunit is configured to filter, from the downlink wireless signals, downlink wireless signals other than the target downlink wireless signal determined by the control management subunit, and send the target downlink wireless signal to the coverage antenna;
the digital filtering subunit is further configured to filter, from the uplink wireless signals sent by the coverage antenna, uplink wireless signals other than the target uplink wireless signal determined by the control management subunit, and send the target uplink wireless signal to the access antenna.
2. The wireless relay device of claim 1,
the protocol analysis subunit is further configured to analyze the downlink wireless signal sent by the access antenna to obtain the signal strength and the signal quality of the downlink wireless signal;
the control management subunit is further configured to configure an uplink filtering parameter and a downlink filtering parameter of the digital filtering unit according to a pre-stored PLMN category and a target parameter of the downlink wireless signal acquired by the protocol analysis unit;
the target parameters include: PLMN category, signal strength, and signal quality.
3. The wireless relay device of claim 1, wherein said wireless relay module further comprises: an outdoor radio frequency front end and an indoor radio frequency front end;
the first end of the outdoor radio frequency front end is connected with the access antenna, and the second end of the outdoor radio frequency front end is connected with the first end of the baseband processing unit and used for sending the downlink wireless signal sent by the access antenna to the baseband processing unit;
the outdoor radio frequency front end is further configured to send the target uplink signal sent by the baseband processing unit to the access antenna;
the outdoor radio frequency front end is also used for processing an uplink channel and a downlink channel between the baseband processing unit and the access antenna so that only one communication channel exists between the outdoor radio frequency front end and the access antenna;
the first end of the indoor radio frequency front end is connected with the coverage antenna, and the second end of the indoor radio frequency front end is connected with the second end of the baseband processing unit and used for sending the uplink wireless signal sent by the coverage antenna to the baseband processing unit;
the indoor radio frequency front end is further configured to send the target downlink signal sent by the baseband processing unit to the coverage antenna;
the indoor radio frequency front end is further configured to process an uplink channel and a downlink channel between the baseband processing unit and the coverage antenna, so that only one communication channel exists between the indoor radio frequency front end and the coverage antenna.
4. The wireless relay device according to claim 3, wherein an outdoor transceiver unit is further disposed between the second end of the outdoor radio frequency front end and the first end of the baseband processing unit, and an indoor transceiver unit is further disposed between the indoor radio frequency front end and the second end of the baseband processing unit;
the outdoor transceiver unit is used for sequentially carrying out low-noise amplification, automatic gain control and analog-to-digital conversion on the downlink wireless signals sent by the outdoor radio frequency front end and then sending the downlink wireless signals to the baseband processing unit;
the outdoor transceiver unit is further configured to perform digital-to-analog conversion, automatic level control and power amplification on the target uplink signal sent by the baseband processing unit in sequence, and send the target uplink signal to the outdoor radio frequency front end;
the indoor transceiver unit is used for sequentially carrying out low-noise amplification, automatic gain control and analog-to-digital conversion on the uplink wireless signal sent by the indoor radio frequency front end and then sending the uplink wireless signal to the baseband processing unit;
and the indoor transceiver unit is further configured to perform digital-to-analog conversion, automatic level control and power amplification on the target downlink signal sent by the baseband processing unit in sequence, and send the target downlink signal to the indoor radio frequency front end.
5. The wireless relay device of claim 3, wherein when the wireless relay device is a Time Division Duplex (TDD) system, both the outdoor radio frequency front end and the indoor radio frequency front end are switches;
the outdoor radio frequency front end is used for switching an uplink channel and a downlink channel between the baseband processing unit and the access antenna according to a preset time sequence, and the indoor radio frequency front end is used for switching the uplink channel and the downlink channel between the baseband processing unit and the coverage antenna according to the preset time sequence.
6. The wireless relay device of claim 3, wherein when said wireless relay device is a frequency division duplex, FDD, system, both said outdoor radio frequency front end and said indoor radio frequency front end are duplexers;
the outdoor radio frequency front end is used for combining an uplink channel and a downlink channel between the baseband processing unit and the outdoor radio frequency front end so that only one communication channel exists between the outdoor radio frequency front end and the coverage antenna;
the indoor radio frequency front end is further configured to separate a communication channel between the coverage antenna and the indoor radio frequency front end, so that the communication channel between the indoor radio frequency front end and the baseband processing unit includes an uplink channel and a downlink channel.
7. A wireless communication system, characterized in that it comprises a wireless relay device according to any of claims 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811114787.9A CN109104232B (en) | 2018-09-25 | 2018-09-25 | Wireless relay equipment and wireless communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811114787.9A CN109104232B (en) | 2018-09-25 | 2018-09-25 | Wireless relay equipment and wireless communication system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109104232A CN109104232A (en) | 2018-12-28 |
| CN109104232B true CN109104232B (en) | 2021-03-16 |
Family
ID=64867463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811114787.9A Active CN109104232B (en) | 2018-09-25 | 2018-09-25 | Wireless relay equipment and wireless communication system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109104232B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110224735B (en) * | 2019-05-13 | 2021-05-11 | 中国联合网络通信集团有限公司 | Wireless relay method and equipment |
| CN110430580A (en) * | 2019-08-30 | 2019-11-08 | 超讯通信股份有限公司 | A kind of 5G indoor coverage equipment and its signal processing method |
| EP4106225A1 (en) * | 2021-06-18 | 2022-12-21 | Deutsche Telekom AG | Method for operating and/or for configuring a repeater device for enabling the repeater device to be operated together with a user equipment as part of or with a telecommunications network, telecommunications network or repeater device, program, and computer-readable medium |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101175304A (en) * | 2006-11-02 | 2008-05-07 | 华为技术有限公司 | Switching method based on relay system |
| CN101594394A (en) * | 2009-06-24 | 2009-12-02 | 华为技术有限公司 | Discovering server method, system and equipment |
| CN202121587U (en) * | 2011-07-21 | 2012-01-18 | 四川邮科通信技术有限公司 | Companding remote stretch system for energy-saving multicarrier digital optical fiber |
| CN102857952A (en) * | 2011-06-30 | 2013-01-02 | 中兴通讯股份有限公司 | Method and device for supporting configuration of sharing mechanism of wireless access side in home base station |
| CN105764054A (en) * | 2016-02-04 | 2016-07-13 | 中国联合网络通信集团有限公司 | Method for network detection based on embedded intelligent card and terminal thereof |
| CN105933954A (en) * | 2016-05-13 | 2016-09-07 | 珠海市魅族科技有限公司 | Method and device for selecting network |
| CN106559770A (en) * | 2015-09-25 | 2017-04-05 | 联芯科技有限公司 | A kind of network selection method and system on other places roaming border |
| CN107409429A (en) * | 2015-03-25 | 2017-11-28 | 高通股份有限公司 | Relaying is found and association messages |
| CN107484237A (en) * | 2017-09-27 | 2017-12-15 | 四川省大见通信技术有限公司 | A kind of unbalanced Adaptable System of uplink downlink and its method |
| CN107888274A (en) * | 2016-09-30 | 2018-04-06 | 展讯通信（上海）有限公司 | Movable signal relay amplification device |
| CN107925953A (en) * | 2015-09-07 | 2018-04-17 | 瑞典爱立信有限公司 | For receiving within a wireless communication network and the wireless device of transmission system information, network node and method therein |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8023446B2 (en) * | 2006-09-28 | 2011-09-20 | Hang Zhang | Systems and methods for facilitating intra-cell-peer-to-peer communication |
| CN103444148B (en) * | 2011-03-22 | 2016-06-08 | 瑞典爱立信有限公司 | Control the business detection Route Selection of functional node disposed or the network node walked around and method |
-
2018
- 2018-09-25 CN CN201811114787.9A patent/CN109104232B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101175304A (en) * | 2006-11-02 | 2008-05-07 | 华为技术有限公司 | Switching method based on relay system |
| CN101594394A (en) * | 2009-06-24 | 2009-12-02 | 华为技术有限公司 | Discovering server method, system and equipment |
| CN102857952A (en) * | 2011-06-30 | 2013-01-02 | 中兴通讯股份有限公司 | Method and device for supporting configuration of sharing mechanism of wireless access side in home base station |
| CN202121587U (en) * | 2011-07-21 | 2012-01-18 | 四川邮科通信技术有限公司 | Companding remote stretch system for energy-saving multicarrier digital optical fiber |
| CN107409429A (en) * | 2015-03-25 | 2017-11-28 | 高通股份有限公司 | Relaying is found and association messages |
| CN107925953A (en) * | 2015-09-07 | 2018-04-17 | 瑞典爱立信有限公司 | For receiving within a wireless communication network and the wireless device of transmission system information, network node and method therein |
| CN106559770A (en) * | 2015-09-25 | 2017-04-05 | 联芯科技有限公司 | A kind of network selection method and system on other places roaming border |
| CN105764054A (en) * | 2016-02-04 | 2016-07-13 | 中国联合网络通信集团有限公司 | Method for network detection based on embedded intelligent card and terminal thereof |
| CN105933954A (en) * | 2016-05-13 | 2016-09-07 | 珠海市魅族科技有限公司 | Method and device for selecting network |
| CN107888274A (en) * | 2016-09-30 | 2018-04-06 | 展讯通信（上海）有限公司 | Movable signal relay amplification device |
| CN107484237A (en) * | 2017-09-27 | 2017-12-15 | 四川省大见通信技术有限公司 | A kind of unbalanced Adaptable System of uplink downlink and its method |
Non-Patent Citations (3)
| Title |
|---|
| Requirements of Interworking WirelessLAN and PLMN Wireless Data Network;H Anthony Chan;《2004 IEEE Africon,7th Africon Conference in Africa》;20050321;第251-256页 * |
| Vocabulary of terms for International Mobile Telecommunications;3GPP;《3GPP Document 5D/TEMP/521》;20110816;全文 * |
| WCDMA无线网络优化;李丹;《中国优秀硕士学位论文全文数据库》;20111015;全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109104232A (en) | 2018-12-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11539498B2 (en) | Channelization for signal boosters | |
| US7177663B2 (en) | Multi-mode radio with interference cancellation circuit | |
| US8559869B2 (en) | Smart channel selective repeater | |
| CN109104232B (en) | Wireless relay equipment and wireless communication system | |
| KR101803342B1 (en) | Apparatus and method for a multiband radio operating in a wireless network | |
| CN105471490B (en) | Repeater and signal processing method thereof | |
| US10356732B2 (en) | Narrowband signal detection for network protection | |
| CN102420624B (en) | Circuit, receptor and the method for processing wireless signal | |
| US7463875B2 (en) | Wireless device minimizing use of external bandpass filter between low-noise amplifier and first mixer | |
| KR102317382B1 (en) | Repeater capable of selecting base station signals | |
| CN107623544B (en) | Intelligent repeater and communication method based on same | |
| CN207869101U (en) | A kind of multimode full bandwidth radio frequency system | |
| CN207442845U (en) | A kind of new multiband WiMAX repeater | |
| CN104378138A (en) | Method and device for suppressing radio-frequency mutual interference and multi-mode and multi-standby communication terminal | |
| CN210143008U (en) | Wireless relay device | |
| CN112770333B (en) | 5G NR wireless distributed frequency shift system and frequency shift method | |
| CN109391274B (en) | Data processing method and processing device, wireless relay equipment and medium | |
| US10567151B2 (en) | Method and apparatus for operating co-located transceivers on the same frequency band | |
| CN103973356A (en) | Receiving and transmitting multiplex circuit for TDD system wireless Pico repeater | |
| IL265699B (en) | Radio frequency front end system and methods and computer program products useful in conjunction therewith | |
| CN203813786U (en) | Receiving and transmitting multiplexing circuit for TDD system wireless Pico repeater | |
| JP4478515B2 (en) | Communication relay device | |
| CN111130584B (en) | Interception circuit and device applied to integrated pico-base station | |
| EP4277158A1 (en) | A mobile telecommunication signal booster | |
| KR101603137B1 (en) | Communication terminal for repeating, m2m terminal for repeating and repeater apparatus having wireless communication module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |