CN117749210A - Radio frequency system, power control method and electronic equipment - Google Patents

Abstract

The application provides a radio frequency system, a power control method and electronic equipment. The radio frequency system comprises: a radio frequency transceiver for generating a first signal; the power amplifier is connected with the radio frequency transceiver and is used for amplifying the first signal into a second signal; the coupler is connected with the power amplifier and is used for generating a coupling signal according to the second signal; the attenuation unit is connected with the coupler and the radio frequency transceiver and is used for determining a feedback signal according to the coupling signal, and the transmitting power indicated by the feedback signal is smaller than or equal to the actual transmitting power of the power amplifier; the radio frequency transceiver is also for: according to the feedback signal, the output power of the first signal is adjusted to adjust the actual transmit power of the second signal to match the power indicated by the feedback signal.

Description

Radio frequency system, power control method and electronic equipment

Technical Field

The present application relates to the field of communications technologies, and in particular, to a radio frequency system, a power control method, and an electronic device.

Background

In the process of communicating the terminal equipment with the network equipment, the terminal equipment transmits and receives signals by means of a radio frequency system in the terminal equipment. The radio frequency system amplifies radio frequency signals of the radio frequency transceiver through the power amplifier, and radiates the amplified signals through the antenna. The radio frequency transceiver can adjust the power of the output radio frequency signal according to the transmitting power level and the maximum transmitting power of the transmitting power level issued by the network equipment so as to realize the control of the transmitting power of the terminal equipment; however, the current power control method cannot reach the maximum performance of the terminal equipment, so that the coverage of the uplink network is limited.

Disclosure of Invention

The application provides a radio frequency system, a power control method and electronic equipment, and various aspects related to embodiments of the application are described below.

In a first aspect, there is provided a radio frequency system comprising: a radio frequency transceiver for generating a first signal; a power amplifier connected to the radio frequency transceiver for amplifying the first signal into a second signal; the coupler is connected with the power amplifier and is used for generating a coupling signal according to the second signal; the attenuation unit is connected with the coupler and the radio frequency transceiver and is used for determining a feedback signal according to the coupling signal, and the transmitting power indicated by the feedback signal is smaller than or equal to the actual transmitting power of the power amplifier; the radio frequency transceiver is further configured to: and adjusting the output power of the first signal according to the feedback signal so as to adjust the actual transmitting power of the second signal to be matched with the power indicated by the feedback signal.

Optionally, the attenuation unit is configured to: outputting a first feedback signal when the target transmission power is smaller than the maximum transmission power; the transmitting power indicated by the first feedback signal is smaller than the actual transmitting power of the second signal, the target transmitting power is the sum of the transmitting power level issued by the network equipment and a floating range value corresponding to the transmitting power level, and the floating range value is larger than 0; the radio frequency transceiver is used for: and adjusting the output power of the first signal according to the first feedback signal and the transmitting power level so as to enable the actual transmitting power of the second signal to be the target transmitting power.

Optionally, the attenuation unit is further configured to: outputting a second feedback signal when the target transmission power is greater than or equal to the maximum transmission power; wherein the transmission power indicated by the second feedback signal matches the actual transmission power of the second signal; the radio frequency transceiver is further configured to: and adjusting the output power of the first signal according to the second feedback signal and the maximum transmission power so as to enable the actual transmission power of the second signal to be the maximum transmission power.

Optionally, a difference between the transmission power value indicated by the first feedback signal and the transmission power value indicated by the coupling signal is the floating range value.

Optionally, the attenuation unit includes a first attenuation network, a second attenuation network, and a switching unit; the first attenuation network is used for outputting the first feedback signal according to the coupling signal, and the second attenuation network is used for outputting the second feedback signal according to the coupling signal; the switching unit is configured to: when the target transmission power is smaller than the maximum transmission power, a passage between the first attenuation network and the radio frequency transceiver is conducted so that the first attenuation network is enabled; and when the target transmit power is greater than or equal to the maximum transmit power, turning on a path between the second attenuation network and the radio frequency transceiver to enable the second attenuation network; or the first attenuation network and the second attenuation network are connected in series between the power amplifier and the radio frequency transceiver, and the switch unit is connected in parallel at two ends of the first attenuation network; the switching unit is configured to: when the target transmission power is smaller than the maximum transmission power, the switch unit is opened to enable the first attenuation network and the second attenuation network so as to output the first feedback signal according to the coupling signal; and when the target transmitting power is larger than the maximum transmitting power, the switch unit is conducted to short the first attenuation network, the second attenuation network is independently enabled, and the second feedback signal is output.

Optionally, the first attenuation network includes a plurality of attenuation networks, and the radio frequency system further includes a processing unit, where the processing unit is configured to: controlling the switching unit according to the target transmitting power and the maximum transmitting power to control the enabling states of the first attenuation network and the second attenuation network; and when the target transmission power is smaller than the maximum transmission power, determining a target attenuation network matched with the floating range value from the attenuation networks, and controlling the target attenuation network to enable so that the attenuation network outputs the first feedback signal.

In a second aspect, a power control method is provided, the method comprising: amplifying the first signal to obtain a second signal; generating a coupling signal from the second signal; generating a feedback signal according to the coupling signal, wherein the transmitting power value indicated by the feedback signal is smaller than or equal to the actual transmitting power of the power amplifier; and adjusting the output power of the first signal according to the feedback signal so as to adjust the actual transmitting power of the second signal to be matched with the power indicated by the feedback signal.

Optionally, the generating a feedback signal according to the coupling signal includes: generating a first feedback signal when the target transmit power is less than the maximum transmit power; the transmitting power indicated by the first feedback signal is smaller than the actual transmitting power of the second signal, the target transmitting power is the sum of the transmitting power level issued by the network equipment and a floating range value corresponding to the transmitting power level, and the floating range is larger than 0; the adjusting the power of the first signal according to the feedback signal to adjust the actual transmitting power of the second signal to match the power indicated by the feedback signal includes: and adjusting the power of the first signal according to the first feedback signal and the transmitting power level so as to enable the actual transmitting power of the second signal to be the target transmitting power.

Optionally, the method further comprises: when the target transmitting power is greater than or equal to the maximum transmitting power, outputting a second feedback signal by utilizing the attenuation unit, wherein the transmitting power indicated by the second feedback signal is matched with the actual transmitting power of the second signal; the method further comprises the steps of: and adjusting the output power of the first signal by using the radio frequency transceiver according to the second feedback signal and the maximum transmission power so as to enable the actual transmission power of the second signal to be the maximum transmission power.

Optionally, a difference between the transmission power value indicated by the first feedback signal and the transmission power value indicated by the coupling signal is the floating range value.

In a third aspect, there is provided an electronic device comprising a radio frequency system as described in the first aspect.

In a fourth aspect, there is provided an electronic device comprising a memory for storing a program, a processor for calling the program in the memory, and a transceiver for causing the electronic device to perform the method according to the second aspect.

In a fifth aspect, there is provided a chip comprising a processor for invoking and running a computer program from memory, such that a device on which the chip is mounted performs the method according to the second aspect.

In a sixth aspect, there is provided a computer-readable storage medium having stored thereon a program that causes a computer to execute the method according to the second aspect.

According to the radio frequency system provided by the embodiment of the application, the attenuation unit is used for attenuating the coupling signal generated by the coupler, so that the transmitting power value fed back to the radio frequency transceiver can be reduced, the output of the radio frequency transceiver can be increased, the actual transmitting power of the radio frequency system is improved, the network coverage can be enhanced, and the communication performance of the terminal equipment is improved; meanwhile, the attenuation unit is utilized to attenuate the coupling signal, and when the coupling signal is applied to the existing radio frequency system, the structure and principle of the existing coupler are not required to be improved, so that the coupling signal attenuation device has the advantage of low cost.

Drawings

Fig. 1 is a schematic diagram of a related art radio frequency system.

Fig. 2 is an application scenario diagram of the technical solution provided in the embodiments of the present application.

Fig. 3 is a schematic diagram of a radio frequency system according to an embodiment of the present application.

Fig. 4 is a schematic diagram of a radio frequency system according to another embodiment of the present application.

Fig. 5 is a schematic diagram of a radio frequency system according to another embodiment of the present application.

Fig. 6 is a schematic diagram of a radio frequency system according to another embodiment of the present application.

Fig. 7 is a schematic diagram of a radio frequency system according to another embodiment of the present application.

Fig. 8 is a schematic flow chart of a power control method provided in an embodiment of the present application.

Fig. 9 is a schematic structural diagram of an electronic device provided in an embodiment of the present application.

Fig. 10 is a schematic structural diagram of an electronic device provided in another embodiment of the present application.

Detailed Description

In order to make the present application solution better understood by those skilled in the art, the following description will be made in detail and with reference to the accompanying drawings in the embodiments of the present application, it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, shall fall within the scope of the present application.

It should be noted that the terms "comprising" and "having" and any variations thereof in the embodiments and figures herein are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.

The terms "first," "second," "third," and "fourth" and the like in the description and in the claims of this application and in the drawings, are used for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

In the process of communicating the terminal equipment with the network equipment, the terminal equipment transmits and receives electromagnetic wave signals by means of the radio frequency unit. The actual network maximum transmission power P of the terminal device depends on the maximum transmission power Pmax of the terminal device and the transmission power class Pb indicated by the network device, and is a smaller value between Pmax and Pb, i.e., p=min { Pmax, pb }. The maximum transmitting power Pmax is usually determined by a designer according to a communication protocol and safety design indexes of devices such as a power amplifier and the like in terminal equipment, and if the transmitting power exceeds Pmax, the devices may be damaged; the transmission power level Pb is determined by the network device through a series of algorithms and is notified to the terminal device by the network device.

Fig. 1 is a schematic diagram of a related art radio frequency system including a transceiver, a power amplifier, a coupler, and an antenna. The transceiver is used for sending the radio frequency signal to be output to the power amplifier, and the power amplifier is used for amplifying the radio frequency signal and radiating the amplified signal through the antenna. The coupler is used for coupling the amplified signals of the power amplifier, determining the transmitting power of the amplified radio frequency signals and feeding back the transmitting power to the transceiver. The transceiver adjusts the power of the radio frequency signal output by the band according to the transmitting power fed back by the coupler, so that the transmitting power amplified by the power amplifier reaches the target transmitting power.

Assuming that the maximum transmission power Pmax is 24dBm (decibel-milliwatt), the current required transmission power level Pb sent by the network device is a certain value, for example, pb corresponding to the band1 frequency band is 23dBm; according to the above description, the real net maximum transmission power P takes the smaller of Pmax and Pb, i.e., the real net maximum transmission power at this time is 23dBm. However, according to the specifications of the existing communication protocol, the power value is allowed to fluctuate within a certain range, for example, pb is 23dBm in band1 frequency band, and the specifications in the protocol allow the terminal device to transmit within 23±2dBm, that is, the radio frequency system can meet the specifications of the communication protocol if transmitting at a power of 24dBm, and at the same time, the maximum transmission power of the power amplifier is not exceeded. Thus, the power control scheme in fig. 1 cannot reach the maximum performance of the terminal device.

The foregoing describes that the coupler in the radio frequency system is configured to couple the signal amplified by the power amplifier, determine the transmitting power of the amplified radio frequency signal, and feed back the transmitting power to the transceiver; therefore, in order to solve the above problem that the maximum performance of the terminal device cannot be achieved, the purpose of increasing the amplification power can be achieved by adjusting the coupling signal output from the coupler. In the following, a specific description will be given by taking pb=23 dBm and pmax=24 dBm as examples, assuming that the coupling factor of the coupler is 15dBm, when the transmission power is 23dBm, the coupling signal output by the coupler is 8dBm, and the transmission power indicated by the coupling signal is matched with the transmission power of the real network. In order to improve the transmission power of the real network, the coupling signal output by the coupler can be regulated, the power of the coupling signal is reduced from 8dBm to 7dBm, the actual transmission power indicated by the coupling signal of 7dBm is 22dBm, the radio frequency transceiver judges that the current actual transmission power is less than the target transmission power of 23dBm according to the received coupling signal of 7dBm, the power of the signal to be output is increased, so that the actual transmission power of the power amplifier is increased, the actual transmission power is more than 23dBm, and the coverage of the uplink network is enhanced.

In the above power control method, by adjusting the coupler, the detected transmission power value is pulled down, so that the power of the output signal of the transceiver and the actual transmission power of the power amplifier are improved. However, in the control method, the coupler needs to be adjusted or a plurality of couplers are arranged to achieve the purpose of adjusting the power of the coupled signals; in practical applications, the coupler is often integrated with the power amplifier as an accessory device of the power amplifier, so that the output signal of the power amplifier cannot be continuously regulated; in the case that the coupler and the power amplifier are separate devices, the adjustment of the coupling signal needs to be performed by means of a plurality of couplers, for example, a plurality of couplers with different coupling factors are arranged, and the plurality of couplers are controlled by using the switch unit to perform the enabling control, so that the power of the coupling signal is adjustable, and the cost of the devices is greatly increased in this way.

The application provides a radio frequency system, a power control method and electronic equipment, so as to solve the problems.

Fig. 2 is an application scenario diagram of a technical solution provided in an embodiment of the present application, where the communication system 200 in fig. 2 includes a network device 210 and a terminal device 220.

The network device 210 may be a device for communicating with a terminal device, which may also be referred to as an access network device or a radio access network device. The network device may be, for example, a base station. The network device in the embodiments of the present application may refer to an access network (radio access network, RAN) node (or device) that accesses the terminal device to the wireless network. The access network device may broadly cover or replace various names such as: a node B (NodeB), an evolved NodeB (eNB), a next generation NodeB (gNB), a relay station, an access point, a transmission point (transmitting and receiving point, TRP), a transmission point (transmitting point, TP), a master MeNB, a secondary SeNB, a multi-mode wireless (MSR) node, a home base station, a network controller, an access node, a wireless node, an Access Point (AP), a transmission node, a transceiving node, a baseband unit (BBU), a remote radio unit (remote radio unit, RRU), an active antenna unit (active antenna unit, AAU), a radio head (remote radio head, RRH), a Central Unit (CU), a Distributed Unit (DU), a positioning node, and the like. The base station may be a macro base station, a micro base station, a relay node, a donor node, or the like, or a combination thereof. A base station may also refer to a communication module, modem, or chip for placement within the aforementioned device or apparatus. The base station may also be a mobile switching center, a device-to-device (D2D), a vehicle-to-device (V2X), a device that assumes a base station function in machine-to-machine (M2M) communication, a network-side device in a 6G network, a device that assumes a base station function in a future communication system, or the like. The base stations may support networks of the same or different access technologies. Alternatively, the network device may be a router, gateway, hub, repeater, switch, or the like. The embodiment of the application does not limit the specific technology and the specific device form adopted by the network device.

The electronic device 220 may also be referred to as a User Equipment (UE), a Terminal device, an access Terminal, a subscriber unit, a subscriber station, a Mobile Station (MS), a mobile Terminal (downlink), a remote station, a remote Terminal, a mobile device, a user Terminal, a wireless communication device, a user agent, a user equipment, or the like.

In some embodiments, the electronic device may be a STATION (ST) in the WLAN. In some embodiments, the electronic device may also be a cellular telephone, a cordless telephone, a session initiation protocol (session initiation protocol, SIP) phone, a wireless local loop (wireless local loop, WLL) station, a personal digital assistant (personal digital assistant, PDA) device, a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, an electronic device in a next generation communication system (e.g., NR system), or an electronic device in a future evolved public land mobile network (public land mobile network, PLMN) network, etc.

In some embodiments, the electronic device may be directed to a device that provides voice and/or data connectivity to the user. For example, a handheld device, an in-vehicle device, or the like having a wireless connection function may be used. As some specific examples, the electronic device may be a mobile phone (mobile phone), a tablet (Pad), a notebook, a palm, a mobile internet device (mobile internet device, MID), a wearable device, a Virtual Reality (VR) device, an augmented reality (augmented reality, AR) device, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in teleoperation (remote medical surgery), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation security (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), and the like.

In some embodiments, the electronic device may be deployed on land. For example, it may be deployed indoors or outdoors. In some embodiments, the deployment may also be on the surface of the water, such as on a ship. In some embodiments, the deployment may also be in the air, such as on an aircraft, balloon, and satellite.

Fig. 3 is a schematic block diagram of a radio frequency system according to an embodiment of the present application, where the radio frequency system is applied to an electronic device. The radio frequency system 300 in fig. 3 comprises a radio frequency transceiver 310, a power amplifier 320, a coupler 330 and an attenuation unit 340.

Wherein the radio frequency transceiver 310 is configured to generate a first signal. The first signal is a radio frequency signal, the radio frequency transceiver can receive data to be transmitted sent by an external device such as a processor or an application processor, the data to be transmitted is a digital signal, and the radio frequency transceiver can process the digital signal to obtain a corresponding radio frequency signal (i.e. the first signal), and send the first signal to the non-power amplifier 320.

The power amplifier 320 is connected to the radio frequency transceiver 310, and is configured to amplify the first signal to obtain a second signal. The output of the power amplifier 320 is typically connected to an antenna, and the power amplifier is capable of transmitting a second signal to the antenna for radiation through the antenna.

The coupler 330 is connected to the power amplifier 320, and the second signal is transmitted to the coupler 330 through a coupling path between the power amplifier 320 and the coupler, and the coupler is configured to generate a coupling signal according to the second signal, where the coupling signal is used to characterize the power of the second signal, or the coupling signal is used to characterize the actual transmit power of the power amplifier 320.

The attenuation unit 340 is connected to the coupler 330 and the rf transceiver 310, and is configured to determine a feedback signal according to the coupling signal and transmit the feedback signal to the rf transceiver.

The feedback signal indicates a transmit power value that is less than or equal to the actual transmit power of the power amplifier, in other words, the feedback signal indicates a transmit power value that is less than or equal to the transmit power value indicated by the coupling signal. For example, when the actual transmit power value of the front power amplifier is 23dBm, the transmit power value indicated by the feedback signal is 22dBm.

The attenuation unit 340 may transmit the generated feedback signal to the radio frequency transceiver 310. The feedback signal may be a transmit power value; alternatively, the feedback signal may be a voltage signal and/or a current signal corresponding to the transmission power value, and the coupler 330 obtains the corresponding voltage signal and/or current signal (i.e. the coupling signal) according to the actual transmission power of the second signal, and the attenuation unit 340 attenuates the corresponding voltage signal and/or current signal to reduce the value of the voltage signal and/or current signal, thereby obtaining the feedback signal. For example, the coupling signal obtained by the coupler is a voltage signal of 3.5V, which indicates a transmission power value of 23dBm, which is attenuated by the attenuation unit to a voltage signal of 3.3V, which voltage signal of 3.3V corresponds to a transmission power of 22dBm.

The radio frequency transceiver 310 is further configured to adjust the output power of the first signal according to the transmission power value indicated by the feedback signal, so as to adjust the actual transmission power of the second signal. When the transmitting power indicated by the feedback signal is smaller than the actual transmitting power of the power amplifier, the radio frequency transceiver determines that the current transmitting power is smaller according to the received feedback signal, the output power of the first signal is pulled up, and then the power of the second signal after being amplified by the power amplifier is increased. For example, when the actual transmission power of the second signal is 23dBm, the transmission power indicated by the feedback signal is 22dBm, and the required transmission power is 23dBm, and the radio frequency transceiver determines that the current transmission power is smaller than the required transmission power, thereby increasing the output power of the first signal, so that the power of the actually transmitted second signal is greater than 23dBm, and thus, the uplink network coverage can be enhanced.

According to the radio frequency system provided by the embodiment of the application, the attenuation unit is used for attenuating the coupling signal generated by the coupler, so that the transmitting power value fed back to the radio frequency transceiver can be reduced, the output of the radio frequency transceiver can be increased, the actual transmitting power of the radio frequency system is improved, the network coverage can be enhanced, and the communication performance of the terminal equipment is improved; meanwhile, the attenuation unit is utilized to attenuate the coupling signal, and when the coupling signal is applied to the existing radio frequency system, the structure and principle of the existing coupler are not required to be improved, so that the coupling signal attenuation device has the advantage of low cost.

In some embodiments, the feedback signal output by the attenuation unit includes a first feedback signal and a second feedback signal, wherein the first feedback signal indicates a transmission power smaller than an actual transmission power of the second signal, and the second feedback signal indicates a transmission power identical to the actual transmission power of the second signal.

The attenuation unit in the embodiment of the application is configured to: the first feedback signal is output when the target transmit power is less than the maximum transmit power, and the second feedback signal is output when the target transmit power is greater than or equal to the maximum transmit power.

The maximum transmitting power is set according to the safety index of the power amplifier when the radio frequency system leaves the factory, and if the actual transmitting power is larger than the maximum transmitting power, the power amplifier may be affected irreversibly.

The target transmission power is the sum of the transmission power level issued by the network device and a floating range value corresponding to the transmission power level. The transmitting power level is the transmitting power currently required by the terminal equipment and is calculated by the network equipment through a series of closed-loop algorithms, and the transmitting power level is a central value; meanwhile, according to the regulations of the related communication protocol, the terminal equipment is allowed to perform signal transmission with any transmission power in a floating range corresponding to the transmission power level, and the upper power limit value of the floating range is a floating range value, and the floating range value is larger than 0.

The two cases where the target transmission power is smaller than the maximum transmission power and the target transmission power is greater than or equal to the maximum transmission power are respectively exemplified below.

The target transmit power is less than the maximum transmit power

Assuming a current transmit power of 21dBm, a maximum transmit power of 24dBm, and a network device indicates a transmit power level of 21dBm that corresponds to a float range of ±2dbm (i.e., a float range value of 2 dBm). The target transmit power at this point is 23dBm, i.e., the communication protocol specifies that the transmission of signals can currently be performed at a power of up to 23 dBm.

The target transmit power 23dBm is now less than the maximum transmit power 24dBm, and the attenuation unit outputs a first feedback signal that may indicate a transmit power of, for example, 19dBm. The radio frequency transceiver receives the first feedback signal and adjusts according to the first feedback signal and the transmission power level, and since the current transmission power indicated by the first feedback signal is the transmission power level of 19dBm which is smaller than 21dBm indicated by the network device, the radio frequency transceiver will increase the output power of the first signal to increase the transmission power of the amplified second signal, and at this time, the actual transmission power of the second signal is larger than the transmission power level indicated by the network device and smaller than the maximum transmission power.

The target transmit power is greater than or equal to the maximum transmit power

Assuming a current transmit power of 21dBm and a maximum transmit power of 24dBm, the network device indicates a transmit power level of 23dBm that corresponds to a floating range of ±2dBm (i.e., a floating range value of 2 dBm). The target transmit power at this point is 25dBm, i.e., the communication protocol specifies that the transmission of signals can currently be performed at power up to 25 dBm.

In this case, the target transmit power 25dBm is greater than the maximum transmit power 24dBm, and the transmit power needs to be limited to be no greater than the maximum transmit power to ensure safe operation of the system. The attenuation unit outputs a second feedback signal at this time, and the transmission power indicated by the second feedback signal is matched with the actual transmission power. As a possible implementation, the attenuation unit may not attenuate the coupled signal, i.e. the attenuated signal at this time is the same as the power indicated by the coupled signal.

In this example, the transmission power indicated by the second feedback signal output by the attenuation unit is the current transmission power of 21dBm. The radio frequency transceiver receives the second feedback signal and adjusts the second feedback signal according to the second feedback signal and the maximum transmission power, the transmission power indicated by the second feedback signal is the transmission power level of 21dBm which is lower than the maximum transmission power and 24dBm, and the radio frequency transceiver adjusts the actual transmission power of the second signal to be equal to the maximum transmission power.

From the above examples, it can be seen that, in this technical solution, the attenuation amplitude (i.e. different feedback signals) of the attenuation unit is determined according to the relation between the target transmission power and the maximum transmission power, so that the radio frequency system can increase the transmission power as much as possible within the range allowed by the communication protocol on the premise of meeting the safety index, thereby enabling the terminal device to reach the maximum communication performance.

In some embodiments, the difference between the transmit power value indicated by the first feedback signal and the transmit power value indicated by the coupling signal is a floating range value. The transmission power level may not be the same for signals of different frequency bands, and the corresponding floating range may be different for signals of different frequency bands, as specified by the relevant protocol (e.g., 3gpp ts 38.101). Therefore, in the technical solution of the present application, the attenuation unit needs to adjust the attenuation degree according to the transmission power level and the floating range value.

In some embodiments, as shown in fig. 4, the attenuation unit 340 includes a first attenuation network 341, a second attenuation network 342, and a switching unit 343.

Wherein, the first attenuation network 341 is configured to output a first feedback signal according to the coupling signal, and the second attenuation network 342 is configured to output a second feedback signal according to the coupling signal.

The switch unit 343 has a first end, a second end and a third end, wherein the first end of the switch unit 343 is connected to the coupler 330, the second end and the third end are respectively connected to the first attenuation network 341 and the second attenuation network 342, and the output ends of the first attenuation network 341 and the second attenuation network 342 are both connected to the radio frequency transceiver 310.

The switching unit 343 is configured to: when the target transmitting power is smaller than the maximum transmitting power, the first end and the second end are controlled to be conducted, so that the first attenuation network is conducted with a channel of the radio frequency transceiver, and a first feedback signal is output to the radio frequency transceiver 310; when the target generation power is larger than the maximum transmission power, the first end is controlled to be conducted with the third end, so that the second attenuation network is conducted with a channel of the radio frequency transceiver, and a second feedback signal is output to the radio frequency transceiver.

In some embodiments, the switch unit 343 may also be disposed between the first attenuation network 341 and the second attenuation network 342 and the radio frequency transceiver 310, which is not limited in this application.

In some embodiments, the first attenuation network 341, the second attenuation network 342, and the switching unit 343 may also adopt the connection manner in fig. 5, that is, the first attenuation network 341 and the second attenuation network 342 are connected in series between the power amplifier and the radio frequency transceiver, and the switching unit 343 is connected in parallel to two ends of the first attenuation network.

When the target transmission power is smaller than the maximum transmission power, the switch unit is opened, so that the first attenuation network and the second attenuation network are jointly enabled, and a first feedback signal is output.

When the target transmitting power is larger than or equal to the maximum transmitting power, the switch unit is in single pass, the first attenuation network is short-circuited, and the second attenuation network is independently enabled, so that a second feedback signal is output.

Fig. 6 and 7 are schematic diagrams of a radio frequency system provided in a further embodiment of the present application, wherein the first attenuation network 341 comprises a plurality of attenuation networks 3411 a, 34b, …,341N.

The radio frequency system in fig. 6 and 7 further comprises a processing unit 350 for: the switching unit 343 is controlled to control the enabled states of the first and second attenuation networks 341 and 342 according to the target and maximum transmission powers.

The processing unit 350 is further configured to: when the target transmit power is less than the maximum transmit power, a target attenuation network matching the floating range value is determined from among the plurality of attenuation networks 3411 a, 34b, …,341N of the first attenuation network 341, and the target attenuation network is controlled to be enabled so that the attenuation network 340 outputs the first feedback signal.

In some embodiments, the first attenuation network 341 further includes a second switching unit 3411, where the second switching unit 3411 is connected to the plurality of attenuation networks 3411 a, 3417 b, …,341N, and the processing unit may implement control over the enabled state of the target attenuation network by controlling on/off of the second switching unit.

In some embodiments, the first attenuation network 341 may also be an adjustable attenuation network, which may adjust its attenuation level according to the occurring transmit power level and the floating range value, to output a different first feedback signal.

In some embodiments, coupler 430 is integrated in power amplifier 420.

Embodiments of the apparatus of the present application are described above in connection with fig. 1-7, and embodiments of the method of the present application are described below in connection with fig. 8. It is to be understood that the description of the method embodiments corresponds to the device embodiments, and that parts not described in detail may therefore be referred to the device embodiments above.

Fig. 8 is a schematic flow chart of a power control method provided by an embodiment of the present application. The method in fig. 8 includes steps S810-S840.

In step S810, the first signal is amplified to obtain a second signal.

In step S820, a coupling signal is generated from the second signal.

In step S830, a feedback signal is generated according to the coupling signal, where the transmission power value indicated by the feedback signal is less than or equal to the actual transmission power of the power amplifier.

In step S840, the power of the first signal is adjusted according to the feedback signal to adjust the actual transmit power of the second signal to match the power indicated by the feedback signal.

In some embodiments, the generating a feedback signal from the coupling signal comprises: generating a first feedback signal when the target transmit power is less than the maximum transmit power; the transmitting power indicated by the first feedback signal is smaller than the actual transmitting power of the second signal, the target transmitting power is the sum of the transmitting power level issued by the network equipment and a floating range value corresponding to the transmitting power level, and the floating range is larger than 0; the adjusting the power of the first signal according to the feedback signal to adjust the actual transmitting power of the second signal to match the power indicated by the feedback signal includes: and adjusting the power of the first signal according to the first feedback signal and the transmitting power level so as to enable the actual transmitting power of the second signal to be the target transmitting power.

In some embodiments, the method further comprises: when the target transmitting power is greater than or equal to the maximum transmitting power, outputting a second feedback signal by utilizing the attenuation unit, wherein the transmitting power indicated by the second feedback signal is matched with the actual transmitting power of the second signal; the method further comprises the steps of: and adjusting the output power of the first signal by using the radio frequency transceiver according to the second feedback signal and the maximum transmission power so as to enable the actual transmission power of the second signal to be the maximum transmission power.

In some embodiments, a difference between the transmit power value indicated by the first feedback signal and the transmit power value indicated by the coupling signal is the floating range value.

It should be noted that the method provided in the embodiments of the present application may be performed by the radio frequency system in any of the previous embodiments, where the radio frequency system includes a radio frequency transceiver, a power amplifier, a coupler, and an attenuation unit, and the method includes:

transmitting a first signal to a power amplifier using a radio frequency transceiver;

amplifying the first signal by using a power amplifier to obtain a second signal;

generating a coupling signal from the second signal using a coupler;

generating a feedback signal by using an attenuation unit according to the coupling signal, wherein the transmitting power value indicated by the feedback signal is smaller than or equal to the actual transmitting power of the power amplifier;

the output power of the first signal is adjusted by the radio frequency transceiver according to the feedback signal to adjust the actual transmit power of the second signal to match the power indicated by the feedback signal.

Fig. 9 is a schematic block diagram of an electronic device 900 according to an embodiment of the present application, where the electronic device 900 includes a radio frequency system 910, and the radio frequency system 910 is a radio frequency system described in any of the foregoing embodiments.

Fig. 10 is a schematic structural diagram of an electronic device 1000 provided in another embodiment of the present application. The dashed lines in fig. 10 indicate that the unit or module is optional. The electronic device 1000 may be used to implement the methods described in the method embodiments above. The electronic device 1000 may be, for example, the aforementioned terminal device or network device; alternatively, the electronic device 1000 may also be a chip or an integrated circuit capable of implementing the method of the above embodiments.

The electronic device 1000 may include one or more processors 1010. The processor 1010 may support the electronic device 1000 to implement the methods described in the method embodiments above. The processor 1010 may be a general-purpose processor or a special-purpose processor. For example, the processor may be a central processing unit (central processing unit, CPU). Alternatively, the processor 1010 may be another general purpose processor, a digital signal processor (digital signal processor, DSP), an application specific integrated circuit (application specific integrated circuit, ASIC), an off-the-shelf programmable gate array (field programmable gate array, FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The electronic device 1000 may also include one or more memory 1020. The memory 1020 has stored thereon a program that is executable by the processor 1010 to cause the processor 1010 to perform the methods described in the method embodiments above. The memory 1020 may be separate from the processor 1010 or may be integrated within the processor 1010.

The electronic device 1000 may also include a transceiver 1030. The processor 1010 may communicate with other devices or chips through a transceiver 1030. For example, the processor 1010 may transmit and receive data to and from other devices or chips through the transceiver 1030.

There is also provided in an embodiment of the present application a chip comprising a processor operable to invoke and run a computer program from a memory, such that a device having the chip mounted thereon performs the method described in the above method embodiment. It will be appreciated that the processor may be any of the types of processors mentioned above. It will be appreciated that the memory may be separate from the chip or may be integrated into the chip.

Embodiments of the present application also provide a computer-readable storage medium having executable code stored thereon, which when executed, is capable of implementing the methods in the various embodiments of the present application.

Embodiments of the present application also provide a computer program product. The computer program product includes a program that causes a computer to perform the methods of the various embodiments of the present application.

The embodiment of the application also provides a computer program. The computer program causes a computer to perform the methods of the various embodiments of the present application.

It should be understood that in the embodiments of the present application, "B corresponding to a" means that B is associated with a, from which B may be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may also determine B from a and/or other information.

It should be understood that the term "and/or" is merely an association relationship describing the associated object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

It should be understood that, in various embodiments of the present application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present application.

In the several embodiments provided in the present application, it should be understood that the disclosed systems and apparatuses may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, produces a flow or function in accordance with embodiments of the present application, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital subscriber line (digital subscriber Line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be read by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a digital versatile disk (digital video disc, DVD)), or a semiconductor medium (e.g., a Solid State Disk (SSD)), or the like.

The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. A radio frequency system, comprising:

a radio frequency transceiver for generating a first signal;

a power amplifier connected to the radio frequency transceiver for amplifying the first signal into a second signal;

the coupler is connected with the power amplifier and is used for generating a coupling signal according to the second signal;

the attenuation unit is connected with the coupler and the radio frequency transceiver and is used for determining a feedback signal according to the coupling signal, and the transmitting power indicated by the feedback signal is smaller than or equal to the actual transmitting power of the power amplifier;

the radio frequency transceiver is further configured to: and adjusting the output power of the first signal according to the feedback signal so as to adjust the actual transmitting power of the second signal to be matched with the power indicated by the feedback signal.

2. The radio frequency system according to claim 1, wherein the attenuation unit is configured to:

outputting a first feedback signal when the target transmission power is smaller than the maximum transmission power;

the transmitting power indicated by the first feedback signal is smaller than the actual transmitting power of the second signal, the target transmitting power is the sum of the transmitting power level issued by the network equipment and a floating range value corresponding to the transmitting power level, and the floating range value is larger than 0;

the radio frequency transceiver is used for: and adjusting the output power of the first signal according to the first feedback signal and the transmitting power level so as to enable the actual transmitting power of the second signal to be the target transmitting power.

3. The radio frequency system according to claim 2, wherein the attenuation unit is further configured to:

outputting a second feedback signal when the target transmission power is greater than or equal to the maximum transmission power;

wherein the transmission power indicated by the second feedback signal matches the actual transmission power of the second signal;

the radio frequency transceiver is further configured to: and adjusting the output power of the first signal according to the second feedback signal and the maximum transmission power so as to enable the actual transmission power of the second signal to be the maximum transmission power.

4. The radio frequency system according to claim 2, wherein a difference between the transmission power value indicated by the first feedback signal and the transmission power value indicated by the coupling signal is the floating range value.

5. A radio frequency system according to claim 3, wherein the attenuation unit comprises a first attenuation network, a second attenuation network and a switching unit;

the first attenuation network is used for outputting the first feedback signal according to the coupling signal, and the second attenuation network is used for outputting the second feedback signal according to the coupling signal;

the switching unit is configured to: when the target transmission power is smaller than the maximum transmission power, a passage between the first attenuation network and the radio frequency transceiver is conducted so that the first attenuation network is enabled; the method comprises the steps of,

when the target transmitting power is greater than or equal to the maximum transmitting power, a passage between the second attenuation network and the radio frequency transceiver is conducted so as to enable the second attenuation network; or,

the first attenuation network and the second attenuation network are connected in series between the power amplifier and the radio frequency transceiver, and the switch unit is connected in parallel at two ends of the first attenuation network;

The switching unit is configured to: when the target transmission power is smaller than the maximum transmission power, the switch unit is opened to enable the first attenuation network and the second attenuation network so as to output the first feedback signal according to the coupling signal; the method comprises the steps of,

when the target transmitting power is larger than the maximum transmitting power, the switch unit is conducted to short the first attenuation network, the second attenuation network is independently enabled, and the second feedback signal is output.

6. A method of power control, the method comprising:

amplifying the first signal to obtain a second signal;

generating a coupling signal from the second signal;

generating a feedback signal according to the coupling signal, wherein the transmitting power value indicated by the feedback signal is smaller than or equal to the actual transmitting power of the power amplifier;

and adjusting the output power of the first signal according to the feedback signal so as to adjust the actual transmitting power of the second signal to be matched with the power indicated by the feedback signal.

7. The method of claim 6, wherein generating a feedback signal from the coupling signal comprises:

Generating a first feedback signal when the target transmit power is less than the maximum transmit power;

the transmitting power indicated by the first feedback signal is smaller than the actual transmitting power of the second signal, the target transmitting power is the sum of the transmitting power level issued by the network equipment and a floating range value corresponding to the transmitting power level, and the floating range is larger than 0;

the adjusting the power of the first signal according to the feedback signal to adjust the actual transmitting power of the second signal to match the power indicated by the feedback signal includes:

and adjusting the power of the first signal according to the first feedback signal and the transmitting power level so as to enable the actual transmitting power of the second signal to be the target transmitting power.

8. The method of claim 7, wherein the method further comprises:

when the target transmitting power is greater than or equal to the maximum transmitting power, outputting a second feedback signal by utilizing the attenuation unit, wherein the transmitting power indicated by the second feedback signal is matched with the actual transmitting power of the second signal;

the method further comprises the steps of: and adjusting the output power of the first signal by using the radio frequency transceiver according to the second feedback signal and the maximum transmission power so as to enable the actual transmission power of the second signal to be the maximum transmission power.

9. The method of claim 8, wherein a difference between a transmit power value indicated by the first feedback signal and a transmit power value indicated by the coupling signal is the floating range value.

10. An electronic device comprising a radio frequency system as claimed in any one of claims 1-5.