Detailed Description
To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Embodiments of the present application are set forth in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
It will be understood that the terms "first," "second," and the like as used herein may be used herein to describe various features, but these elements are not limited by these terms. These terms are only used to distinguish one feature from another. For example, a first antenna may be referred to as a second antenna, and similarly, a second antenna may be referred to as a first antenna, without departing from the scope of the present application. The first antenna and the second antenna are both antennas, which are different antennas.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. In the description of the present application, the meaning of "above" includes the present number, e.g., two or more includes two, unless specifically limited otherwise.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or be connected to the other element through intervening elements. Further, "connection" in the following embodiments is understood to mean "electrical connection", "communication connection", or the like, if there is a transfer of electrical signals or data between the connected objects.
Referring to fig. 1, a schematic diagram of a network system architecture according to an embodiment of the present application is shown. In the system architecture shown in fig. 1, theclient premise equipment 10 may be connected to a first base station 20 in a first network system and access a core (core) network through the first base station 20. Thecustomer premises equipment 10 is used for realizing a network access function, converting a provider public network WAN into a user home local area network LAN, and supporting a plurality of mobile terminals to access the network simultaneously. In addition, the vicinity of thecustomer premises equipment 10 may be also deployed with the cell and the second base station of the second network system, or may not be deployed with the cell and the second base station of the second communication system. The first network system is different from the second network system, for example, the first network system may be a 4G system, and the second network system may be a 5G system; alternatively, the first network system may be a 5G system and the second network system may be a future PLMN system evolved after 5G; the embodiment of the present application does not specifically limit what kind of communication system the first network system and the second network system specifically belong to.
When thecustomer premises equipment 10 is connected to the 5G communication system, thecustomer premises equipment 10 may transmit and receive data with a corresponding base station through a beam formed by the first antenna, and the beam needs to be aligned with an antenna beam of the base station, so as to facilitate thecustomer premises equipment 10 to transmit uplink data to the base station or receive downlink data transmitted by the base station.
The customer premises equipment is used for realizing a network access function and converting an operator public network WAN into a user home local area network LAN. According to the current internet broadband access mode, the access modes can be classified into FTTH (fiber to the home), DSL (digital telephone line access), Cable (Cable television line access), and Mobile (Mobile access, i.e. wireless CPE). The client front-end device is a mobile signal access device which receives mobile signals and forwards the mobile signals through wireless WIFI signals, and is also a device which converts high-speed 4G or 5G signals into WiFi signals, and can support a plurality of mobile terminals 30 to access a network simultaneously.
Referring to fig. 2, an embodiment of the present application provides a client front-end device 10. The client front-end device 10 includes an antenna group, areceiving circuit 110, a radiofrequency processing circuit 120, and anamplifying circuit 130. The antenna group includes a first antenna ANT1 and a second antenna ANT2, thereceiving circuit 110 is connected to the first antenna ANT1, the radiofrequency processing circuit 120, and the amplifyingcircuit 130, respectively, and the amplifyingcircuit 130 is further connected to the second antenna ANT 2. The first antenna ANT1 is used for receiving a radio frequency signal and transmitting the received radio frequency signal to thereceiving circuit 110; thereceiving circuit 110 is configured to receive and process the radio frequency signal, separate the radio frequency signal into a first radio frequency signal and a second radio frequency signal in a 5G frequency band, output the first radio frequency signal to the radiofrequency processing circuit 120, and output the second radio frequency signal to the amplifyingcircuit 130; therf processing circuit 120 is configured to process the first rf signal, specifically, demodulate the first rf signal into a baseband signal, and implement antenna control according to the baseband signal, for example, when the first antenna ANT1 includes multiple antennas, a suitable antenna may be selected to establish a connection with a base station; when the second antenna ANT2 includes a plurality of antennas, the radiation direction can be changed by switching the antennas; in some embodiments, therf processing circuit 120 may further modulate the baseband signal for radiation via an antenna. The amplifyingcircuit 130 is configured to amplify the second radio frequency signal and output the amplified second radio frequency signal to the second antenna ANT2 for radiation, so as to implement coverage enhancement on the 5G signal.
In some embodiments, the first radio frequency signal further includes a radio frequency signal in a 4G frequency band and/or a radio frequency signal in a WiFi frequency band.
Compared with the prior signal amplification device which does not have the identification capability on signal amplification and has no selective effect on frequency, the amplified signals can include multiple frequency bands and even generate mutual interference, and the deployment of 5G signals is not facilitated, in the application, the radio frequency signals are received through the receiving link of thecustomer premises equipment 10, the second radio frequency signals in the 5G frequency bands are separated and amplified, the 5G signals are independently radiated through the second antenna ANT2 to realize coverage enhancement, the amplification of the 5G signals can be selectively realized, a special receiving link is not required to be arranged to receive and process the radio frequency signals, the receiving link of thecustomer premises equipment 10 is directly multiplexed, and the coverage enhancement of the indoor 5G signals is realized at low cost.
As shown in fig. 3, in one embodiment, thereceiving circuit 110 includes a low noise amplifying unit LNA and apower divider 111, where thepower divider 111 includes a common terminal, a first branch terminal and a second branch terminal, the common terminal of thepower divider 111 is connected to a first antenna ANT1, the first branch terminal is connected to the amplifyingcircuit 130, the second branch terminal is connected to an input terminal of the low noise amplifying unit LNA, and an output terminal of the low noise amplifying unit LNA is connected to therf processing circuit 120. Thepower divider 111 is configured to perform power distribution on the radio frequency signal, and divide the radio frequency signal into a first radio frequency signal and a second radio frequency signal, so as to output the first radio frequency signal to the low noise amplification unit LNA and output the second radio frequency signal to theamplification circuit 130, where the low noise amplification unit LNA is configured to amplify the first radio frequency signal and output the amplified first radio frequency signal to the radiofrequency processing circuit 120, and theamplification circuit 130 amplifies the second radio frequency signal and then radiates the amplified second radio frequency signal by using the second antenna ANT 2. First, the radio frequency signal is separated, and then the separated first radio frequency signal and the separated second radio frequency signal are amplified by the low noise amplification unit LNA and theamplification circuit 130, respectively.
As shown in fig. 4, in one embodiment, the receivingcircuit 110 includes a low noise amplifying unit LNA and apower divider 111, wherein an input terminal of the low noise amplifying unit LNA is connected to the first antenna ANT1, thepower divider 111 includes a common terminal, a first branch terminal and a second branch terminal, the common terminal of thepower divider 111 is connected to an output terminal of the low noise amplifying unit LNA, the first branch terminal of thepower divider 111 is connected to the amplifyingcircuit 130, and the second branch terminal of thepower divider 111 is connected to therf processing circuit 120. The low noise amplifier unit LNA is configured to amplify the radio frequency signal received by the first antenna ANT1, and then perform power distribution through thepower divider 111, so as to separate the radio frequency signal into a first radio frequency signal and a second radio frequency signal, output the first radio frequency signal to the radiofrequency processing circuit 120, and output the second radio frequency signal to theamplifier circuit 130. That is, after the radio frequency signal is amplified by the low noise amplification unit LNA, power distribution is performed by thepower divider 111, and then the second radio frequency signal is amplified by the amplifyingcircuit 130, so that the cascade noise coefficient of the receiving link can be reduced, and the receiving performance of the client front-end device 10 on the communication signal of the client front-end device is not affected.
As shown in fig. 5, in one embodiment, the client front-end device 10 further includes afilter circuit 140, and thefilter circuit 140 is disposed between the receivingcircuit 110 and the first antenna ANT1 for performing a filtering process on the radio frequency signal. As shown in fig. 6, in one embodiment, thefilter circuit 140 is disposed between the low noise amplifier unit LNA and the first antenna ANT1, and is configured to output the radio frequency signal after filtering to the low noise amplifier unit LNA for processing, and then output the radio frequency signal to thepower divider 111 for power distribution. As shown in fig. 7, in one embodiment, thefiltering circuit 140 is disposed between thepower divider 111 and the first antenna ANT1, and is configured to output the rf signal after filtering to thepower divider 111 for power distribution, and output the separated first rf signal and second rf signal to the low noise amplifier LNA and the amplifyingcircuit 130 for amplification respectively.
Referring to fig. 8 and 9, in one embodiment, thefilter circuit 140 includes a plurality offilters 142 and afirst switch 141. Thefirst switch 141 includes a first end and a plurality of second ends, the first end of thefirst switch 141 is connected to the first antenna ANT1, and the plurality of second ends of thefirst switch 141 are respectively connected to the plurality offilters 142 in a one-to-one correspondence manner. Eachfilter 142 allows only radio frequency signals of a predetermined frequency band to pass therethrough. For example, if the frequency bands of the rf signals include two 4G bands B34 and B39 and three 5G bands N41, N78 and N79, thefirst switch 141 may select five received rf signals to turn on a path between any one of thefilters 142 and the receivingcircuit 110.
In one embodiment, the receiving circuit may divide the radio frequency signal by setting a frequency divider to separate the first radio frequency signal and the second radio frequency signal.
In one embodiment, the client front-end device 10 further includes a control circuit 22, and the control circuit 22 is connected to the amplifyingcircuit 130 and is configured to adjust a gain factor of the amplifyingcircuit 130 to change the intensity of the 5G signal radiated by the second antenna ANT 2. When a certain mobile terminal in an indoor area is not connected to the client front-end device 10, but is connected to a base station or other network access device that transmits radio frequency signals in other 5G frequency bands, if the strength of the 5G signal radiated by the client front-end device 10 is too high, interference may be generated on the radio frequency signal received and transmitted by the mobile terminal, and at this time, the gain factor of the amplifyingcircuit 130 may be adjusted to appropriately reduce the strength of the 5G signal radiated by the second antenna ANT2, so as to ensure normal communication of each indoor mobile terminal.
The Control circuit 22 may be a Mobile Industry Processor Interface (MIPI) -radio frequency Front End Control Interface (RF Front End Control Interface, RFFE) Control circuit 22 or a radio frequency Front End Control Interface (RF Front End Control Interface, RFFE) Control circuit 22, which conforms to a Control protocol of an RFFE bus. In one embodiment, the control circuit 22 is further configured to control thefirst switch 141 to selectively turn on a path between any one of thefilters 142 and the receivingcircuit 110.
In one embodiment, the control circuit 22 is further configured to control the 5G enhancement path in which theamplifying circuit 130 is located to switch between an operating state and a non-operating state. Specifically, the client front-end device 10 may set a switch for turning on the 5G enhanced coverage, or may send an instruction for turning on or off the 5G enhanced coverage function through the mobile terminal, and when the 5G enhanced coverage function needs to be turned on, the control circuit 22 controls the 5G enhanced channel where the amplifyingcircuit 130 is located to be switched to the working state; when the 5G enhanced coverage function needs to be turned off, the control circuit 22 controls the 5G enhanced channel where the amplifyingcircuit 130 is located to be switched to the non-operating state.
As shown in fig. 10, in one embodiment, the amplifyingcircuit 130 includes an amplifier PA and asecond switch 131. Thesecond switch 131 is connected to the output terminal of the receivingcircuit 110 and the input terminal of the amplifier PA, respectively, and a control terminal of thesecond switch 131 is connected to the control circuit 22, and is configured to be turned on according to an instruction of the control circuit 22 when the 5G enhanced coverage function needs to be turned on, so as to turn on a 5G enhanced path where the amplifier PA is located, and at this time, the second antenna ANT2 radiates a 5G enhanced signal; when the 5G enhanced coverage function needs to be turned off, the control circuit 22 turns off the 5G enhanced path where the amplifier PA is located, and the second antenna ANT2 does not radiate the 5G enhanced signal.
In one embodiment, theamplification circuit 130 includes an amplifier PA, and the control circuit 22 controls the amplifier PA to switch between an operating state and a non-operating state by adjusting a voltage applied to the amplifier PA.
In one embodiment, the control circuit 22 is further configured to adjust a gain factor of the low noise amplifier LNA in the receivingcircuit 110 to adjust an insertion loss of the receiving link in the client front-end device 10, so as to improve the sensitivity thereof.
As shown in fig. 11, in one embodiment, thecustomer premises equipment 10 further includes a WiFi module and a third antenna ANT3, and the WiFi module is connected to therf processing circuit 120 and the third antenna ANT3, respectively. Therf processing circuit 120 is further configured to process the first rf signal to output a WiFi digital signal to the WiFi module, where the WiFi module converts the WiFi digital signal into a WiFi rf signal after performing modulation and other processes on the WiFi digital signal, and radiates the WiFi rf signal through the third antenna ANT3, so that thecustomer premises equipment 10 converts the rf signal received by the first antenna ANT1 into a WiFi signal, and supports the mobile terminal to access the network.
As shown in fig. 12, in one embodiment, thecustomer premises equipment 10 further includes athird switch 150, and includes a plurality of second antennas ANT2, the plurality of second antennas ANT2 are spaced along a circumferential direction of thecustomer premises equipment 10, thethird switch 150 includes a first end and a plurality of second ends, the first end of thethird switch 150 is connected to the amplifyingcircuit 130, the plurality of second ends of thethird switch 150 are respectively connected to the plurality of second antennas ANT2 in a one-to-one correspondence manner, each of the second antennas ANT2 points in different directions, so that the radiation surface of each of the second antennas ANT2 can cover different areas, and thecustomer premises equipment 10 can selectively switch different second antennas ANT2 to radiate 5G signals through thethird switch 150, so as to change the radiation direction of the 5G signal enhanced coverage.
In one embodiment, the first ends of thethird switches 150, that is, thethird switch 150 is a multi-selection multi-switch, which can simultaneously open the paths between the plurality of amplifyingcircuits 130 and the plurality of second antennas ANT2, thereby achieving a larger area of coverage enhancement of the 5G signal.
As shown in fig. 13, in one embodiment, the number of the first antennas ANT1 is multiple, the multiple first antennas ANT1 are arranged at intervals along the circumferential direction of thecustomer premises equipment 10, thecustomer premises equipment 10 further includes afourth switch 160, thefourth switch 160 includes multiple first terminals and at least one second terminal, the multiple first terminals of thefourth switch 160 are respectively connected to the multiple first antennas ANT1 in a one-to-one correspondence, the second terminal of thefourth switch 160 is connected to thefilter circuit 140, and thefourth switch 160 is configured to selectively turn on paths between different first antennas ANT1 and thefilter circuit 140 so as to switch different first antennas ANT1 to receive the radio frequency signal. Specifically, thefourth switch 160 is controlled by the control circuit 22 to be switched on, and the control circuit 22 may select the first antenna ANT1 pointing to the base station cell to be connected to establish a connection with the base station cell according to the relative position of each first antenna ANT1 and the base station cell, so as to ensure the communication quality. In one embodiment, the control circuit 22 may further perform selection according to the strength of the radio frequency signal received by each first antenna ANT1, and select the first antenna ANT1 with the best radio frequency signal strength to perform reception of the radio frequency signal, so as to ensure communication quality.
The client front-end device 10 in the embodiment of the present application includes a memory 21 (which optionally includes one or more computer-readable storage media), a control circuit 22, a peripheral interface 23, a Radio Frequency (RF) system 24, an input/output (I/O) subsystem 25, and an external port 26. These components optionally communicate via one or more communication buses or signal lines. Those skilled in the art will appreciate that the client front-end device 10 shown in FIG. 2 does not constitute a limitation of the client front-end device 10 and may include more or fewer components than shown, or some components may be combined, or a different arrangement of components. The various components shown in fig. 2 are implemented in hardware, software, or a combination of both hardware and software, including one or more signal processing and/or application specific integrated circuits.
The memory 21 optionally includes high-speed random access memory, and also optionally includes non-volatile memory, such as one or more magnetic disk storage devices, flash memory devices, or other non-volatile solid-state memory devices. Illustratively, the software components stored in memory 21 include an operating system 211, a communications module (or set of instructions) 212, a Global Positioning System (GPS) module (or set of instructions) 213, and the like.
The control circuit 22 is configured with a processor and other control circuits 22, such as the control circuit 22 in the radio frequency circuit 24, may be used to control the operation of thecustomer premises equipment 10. The processor may be based on one or more microprocessors, microcontrollers, digital signal processors, baseband processors, power management units, audio codec chips, application specific integrated circuits, and the like.
The processor may be configured to implement a control algorithm that controls the use of the antenna in thecustomer premises equipment 10. For example, the processor may be configured to control thefirst switch 141 to switchdifferent filter 142 paths to enable selection of a frequency band of the radio frequency signal.
The I/O subsystem 25 couples input/output peripheral devices on thecustomer premises equipment 10, such as a keypad and other input control devices, to the peripheral device interface 27. The I/O subsystem 25 optionally includes a touch screen, buttons, levers, touch pads, keypads, keyboards, tone generators, accelerometers (motion sensors), ambient and other sensors, light emitting diodes and other status indicators, data ports, and the like. The user may control the operation of the client front-end device 10 by supplying commands through the I/O subsystem 25 and may receive status information and other outputs from the client front-end device 10 using the output resources of the I/O subsystem 25.
The external port 26 may be an ethernet card or a wireless network card, etc. for communicating with an external electronic device.
The radio frequency system 24 includes an uplink including an antenna and an uplink signal processing circuit, and a downlink including an antenna and a downlink signal processing circuit, and may specifically be a device (including the receivingcircuit 110, the radiofrequency processing circuit 120, the amplifyingcircuit 130, thefiltering circuit 140, and the like) configured as in the foregoing embodiments. The antennas in the embodiments of the present application may be formed using any suitable type of antenna. For example, the antenna may include an antenna with a resonating element formed from the following antenna structure: at least one of an array antenna structure, a loop antenna structure, a patch antenna structure, a slot antenna structure, a helical antenna structure, a strip antenna, a monopole antenna, a dipole antenna, and the like. Different types of antennas may be used for different frequency bands and frequency band combinations. There may be a plurality of antennas in thecustomer premises equipment 10. For example, a millimeter wave antenna for transceiving a millimeter wave frequency band may be included, a 5G antenna for transceiving a sub-6GHz frequency band may be included, a plurality of 2G/3G/4G antennas for transceiving a 2G, 3G, 4G frequency band may be included, and the antennas may be directional antennas, non-directional antennas, fixed antennas, or rotatably adjustable antennas.
Illustratively, the millimeter wave antenna may include a millimeter wave antenna array (multiple radiating patches) and a radio frequency transceiver chip, where the millimeter wave antenna array implements receiving and transmitting of millimeter wave signals, and the millimeter wave radio frequency transceiver chip implements up-down frequency conversion processing of millimeter wave signals. Furthermore, the millimeter wave antenna array and the radio frequency transceiver chip can be arranged on the same PCB, so that insertion loss during millimeter wave signal transmission is reduced, and radio frequency index performance is improved.
The rf system 24 also includes a plurality of rf circuits 242 for processing rf signals of different frequency bands. Such as satellite positioning radio frequency circuitry for receiving satellite positioning signals at 1575MHz, WiFi and bluetooth transceiver radio frequency circuitry for handling the 2.4GHz and 5GHz bands of IEEE802.11 communications, cellular telephone transceiver radio frequency circuitry for handling wireless communications at cellular telephone bands such as 850MHz, 900MHz, 1800MHz, 1900MHz and 2100MHz bands, or other 5G millimeter wave, Sub-6G bands.
Illustratively, the rf circuit 242 may further include a baseband processor, an rf transceiver unit, and an rf front-end unit. The baseband processor may provide the network information to the processor. The network information may include raw and processed information associated with wireless performance metrics of the Received antenna signals, such as Received Power, transmitted Power, Reference Signal Received Power (RSRP), Reference Signal Received Quality (RSRQ), Received Signal Strength Indicator (RSSI), Signal to Noise Ratio (SNR), Rank of MIMO channel matrix (Rank), carrier to Interference plus Noise Ratio (RS-CINR), frame error rate, bit error rate, channel quality measurement based on signal quality data such as Ec/lo or c/No data, information on whether a response (reply) corresponding to a request from a mobile terminal is being received from a base station, information on whether a network access procedure is successful, and the like.
The processor may analyze the received antenna signal information and in response, the processor (or baseband processor, if desired) may issue control commands for controlling the radio frequency system 24. For example, the processor may issue a control command to control thefirst switch 141 to select to turn on the path between thedifferent filter 142 and the first antenna ANT 1.
The radio frequency transceiver unit may include one or more radio frequency transceivers, such as transceivers, e.g., one or more transceivers shared between antennas, one transceiver per antenna, etc.). Illustratively, a transceiver may include a transmitter (such as transmitter TX) and a receiver (such as receiver RX), or may include only a receiver (e.g., receiver RX) or only a transmitter (e.g., transmitter TX). For example, the transceiver may be used to implement frequency conversion processing between the intermediate frequency signal and the baseband signal, or/and to implement frequency conversion processing between the intermediate frequency signal and the high frequency signal, and so on.
The baseband processor may receive digital data to be transmitted from the processor 22 and may also utilize the radio frequency transceiver unit to transmit corresponding antenna signals. The radio frequency front end unit may be coupled between the radio frequency transceiver unit and the antenna and may be for communicating radio frequency signals generated by the transmitter and to the antenna. The rf front-end unit may include an rf switch, impedance matching circuitry, afilter 142, and other circuitry for interfacing between the antenna and the rf transceiver unit.
Thecustomer premises equipment 10 also includes a power supply to supply power to the various components. The power supply includes one or more batteries as described above. In one embodiment, the power source may be logically connected to the processor 22 through a power management system, such that the power management system performs functions of managing charging, discharging, and power consumption. The power supply may also include any component of one or more dc or ac power sources, recharging systems, power failure detection circuitry, power converters or inverters, power status indicators, and the like.
In the description herein, reference to the description of "one of the embodiments," "some embodiments," "specific" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, a schematic description of the above terminology may not necessarily refer to the same embodiment or example.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.