WO2019157702A1 - Procédé de réglage de puissance de sortie et produit associé - Google Patents

Procédé de réglage de puissance de sortie et produit associé Download PDF

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Publication number
WO2019157702A1
WO2019157702A1 PCT/CN2018/076827 CN2018076827W WO2019157702A1 WO 2019157702 A1 WO2019157702 A1 WO 2019157702A1 CN 2018076827 W CN2018076827 W CN 2018076827W WO 2019157702 A1 WO2019157702 A1 WO 2019157702A1
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WO
WIPO (PCT)
Prior art keywords
terminal
transmit power
power
predistortion
network device
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PCT/CN2018/076827
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English (en)
Chinese (zh)
Inventor
唐海
Original Assignee
Oppo广东移动通信有限公司
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to CN201880037241.XA priority Critical patent/CN110720201B/zh
Priority to PCT/CN2018/076827 priority patent/WO2019157702A1/fr
Publication of WO2019157702A1 publication Critical patent/WO2019157702A1/fr

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    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
    • H04L25/40—Transmitting circuits; Receiving circuits
    • H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems

Definitions

  • the present application relates to the field of communications technologies, and in particular, to an output power adjustment method and related products.
  • the state of the terminal in the network includes the idle state and the connected state. In the idle state, if the terminal is at the edge of the cell, the terminal has a high transmit power requirement to ensure that the terminal can initiate random access to obtain the network service at any time.
  • the performance of the power amplifier (PA) of the millimeter wave terminal is greatly affected by the external environment and the thermal noise of the terminal itself, so that the PA linearization improvement technology such as predistortion in the low frequency band cannot be directly applied, so that the millimeter wave terminal linearly emits. Low power and limited uplink coverage.
  • PA power amplifier
  • An embodiment of the present application provides an output power adjustment method and related products, and dynamic cycle performance calibration of a terminal transmission path is implemented through dynamic interaction between a terminal and a network, so that PA pre-distortion can be dynamically applied to a millimeter wave terminal to improve uplink transmission. power.
  • an embodiment of the present application provides an output power adjustment method, which is applied to a terminal, where the method includes:
  • the self-calibration process of the power amplifier PA is started to obtain a predistortion calibration file, and the predistortion calibration file is used to determine the high transmit power after the predistortion.
  • an embodiment of the present application provides an output power adjustment method, which is applied to a network device, where the method includes:
  • the process obtains a predistortion calibration file for determining a high distortion power after predistortion, the required actual transmit power being greater than a preset transmit power.
  • an embodiment of the present application provides a terminal, where the terminal has a function of implementing a behavior of a terminal in the foregoing method design.
  • the functions may be implemented by hardware or by corresponding software implemented by hardware.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the terminal includes a processor configured to support the terminal in performing the corresponding functions of the above methods.
  • the terminal may further include a transceiver for supporting communication between the terminal and the network device.
  • the terminal may further include a memory for coupling with the processor, which stores program instructions and data necessary for the terminal.
  • an embodiment of the present application provides a network device, where the network device has a function of implementing behavior of a first network device in the foregoing method design.
  • the functions may be implemented by hardware or by corresponding software implemented by hardware.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the network device includes a processor configured to support the network device to perform corresponding functions in the methods described above. Further, the network device may further include a transceiver for supporting communication between the network device and the terminal. Further, the network device can also include a memory for coupling with the processor that holds program instructions and data necessary for the network device.
  • an embodiment of the present application provides a network device, including a processor, a memory, a transceiver, and one or more programs, where the one or more programs are stored in the memory, and are configured by The processor executes, the program comprising instructions for performing the steps in any of the methods of the first aspect of the embodiments of the present application.
  • an embodiment of the present application provides a terminal, including a processor, a memory, a communication interface, and one or more programs, where the one or more programs are stored in the memory, and configured by the The processor executes, the program comprising instructions for performing the steps in any of the methods of the second aspect of the embodiments of the present application.
  • the embodiment of the present application provides a computer readable storage medium, wherein the computer readable storage medium stores a computer program for electronic data exchange, wherein the computer program causes the computer to execute as implemented in the present application.
  • the embodiment of the present application provides a computer readable storage medium, wherein the computer readable storage medium stores a computer program for electronic data exchange, wherein the computer program causes the computer to execute as implemented in the present application.
  • the embodiment of the present application provides a computer program product, where the computer program product includes a non-transitory computer readable storage medium storing a computer program, the computer program being operative to cause the computer to execute Apply some or all of the steps described in any of the methods of the first aspect of the embodiments.
  • the computer program product can be a software installation package.
  • embodiments of the present application provide a computer program product, where the computer program product includes a non-transitory computer readable storage medium storing a computer program, the computer program being operative to cause a computer to execute Apply some or all of the steps described in any of the methods of the second aspect of the embodiments.
  • the computer program product can be a software installation package.
  • the terminal when the terminal is in an idle state, the terminal first receives a system broadcast message from the network device, determines the actual transmit power required, and secondly, when detecting that the required actual transmit power is greater than the preset transmit power.
  • the self-calibration process of the power amplifier PA is started to obtain a predistortion calibration file, and the predistortion calibration file is used to determine the high transmit power after predistortion.
  • the weak signal scenario can be identified based on the transmit power ratio, and the predistortion calibration file adapted to the current scene environment condition is dynamically generated in real time through the self-calibration process of the PA, so that the terminal can perform the calibration file according to the dynamic predistortion. Determining the high transmit power after pre-distortion, and performing uplink data transmission or initiating a random access process according to the high transmit power in the current scenario, which is beneficial for the terminal to obtain higher linear output power in real time, thereby improving PA linearity and improving uplink. Coverage purpose.
  • 1A is a network architecture diagram of a possible communication system according to an embodiment of the present application.
  • 1B is a diagram showing an example of signal composition of an SSB according to an embodiment of the present application.
  • FIG. 2 is a schematic flowchart of an output power adjustment method according to an embodiment of the present application.
  • FIG. 3 is a schematic flowchart of an output power adjustment method according to an embodiment of the present application.
  • FIG. 4 is a schematic flowchart of an output power adjustment method according to an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a network device according to an embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of a terminal according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of a network device according to an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of a terminal according to an embodiment of the present application.
  • FIG. 1A illustrates a wireless communication system to which the present application relates.
  • the wireless communication system 100 can operate in a high frequency band, is not limited to a Long Term Evolution (LTE) system, and can be a 5th generation (5G) system and a new air interface (NR) in the future.
  • System machine to machine (Machine to Machine, M2M) system.
  • the wireless communication system 100 can include one or more network devices 101, one or more terminals 103, and a core network device 105.
  • the network device 101 can be a base station, and the base station can be used for communicating with one or more terminals, and can also be used for communicating with one or more base stations having partial terminal functions (such as a macro base station and a micro base station).
  • the base station may be a Base Transceiver Station (BTS) in a Time Division Synchronous Code Division Multiple Access (TD-SCDMA) system, or may be an evolved base station in an LTE system (Evolutional Node B). , eNB), and base stations in 5G systems, new air interface (NR) systems.
  • the base station may also be an Access Point (AP), a TransNode (Trans TRP), a Central Unit (CU), or other network entity, and may include some or all of the functions of the above network entities.
  • the core network device 105 includes an Access and Mobility Management Function (AMF) entity, a User Plane Function (UPF) entity, and a Session Management Function (SMF). .
  • AMF Access and Mobility Management Function
  • UPF User Plane Function
  • SMF Session Management Function
  • Terminals 103 may be distributed throughout wireless communication system 100, either stationary or mobile.
  • the terminal 103 may be a mobile device (such as a smart phone), a mobile station, a mobile unit, an M2M terminal, a wireless unit, a remote unit, a user agent, and a mobile client. and many more.
  • the wireless communication system 100 shown in FIG. 1A is only for the purpose of more clearly explaining the technical solutions of the present application, and does not constitute a limitation of the present application. Those skilled in the art may know that with the evolution of the network architecture and new services. The appearance of the scenario, the technical solution provided by the present application is equally applicable to similar technical problems.
  • Predistortion is a commonly used low frequency PA calibration method.
  • the basic predistortion structure is shown in Figure 1B.
  • the low-frequency PA characteristics are stable and basically do not change greatly with external factors. Therefore, the PA pre-distortion calibration file is generally obtained in the laboratory during the terminal production design phase, and written into the terminal storage unit and used in the user's actual use. Directly call to improve linearity and increase output power.
  • the overall gain function can be expressed by:
  • FIG. 2 is an output power adjustment method according to an embodiment of the present application, which is applied to the foregoing example communication system, and the method includes:
  • the terminal receives a system broadcast message from the network device, determines an actual transmit power required by the terminal, and the terminal is currently in an idle state;
  • the system broadcast message may be, for example, a main information block (MIB) and a system information block (SIBs), and includes an initial access value such as a reference signal initial power value and a cell frequency point. Important system information. .
  • MIB main information block
  • SIBs system information block
  • the terminal includes a single antenna or a dual antenna millimeter wave terminal, which is not limited herein.
  • step 202 when the terminal detects that the actual transmit power required by the terminal is greater than the preset transmit power, the self-calibration process of the power amplifier PA is started to obtain a predistortion calibration file, and the predistortion calibration file is used to determine the pre High transmit power after distortion.
  • the preset transmit power may be, for example, 26 dbm, 28 dbm, etc., which may be specifically obtained by testing, and is not limited herein.
  • the terminal when the terminal is in an idle state, it first receives a system broadcast message from the network device, determines the actual transmit power required, and secondly, detects that the required actual transmit power is greater than the preset transmit power.
  • a predistortion calibration file is obtained, and the predistortion calibration file is used to determine the high transmit power after predistortion.
  • the weak signal scenario can be identified based on the transmit power ratio, and the predistortion calibration file adapted to the current scene environment condition is dynamically generated in real time through the self-calibration process of the PA, so that the terminal can perform the calibration file according to the dynamic predistortion. Determining the high transmit power after pre-distortion, and performing uplink data transmission or initiating a random access process according to the high transmit power in the current scenario, which is beneficial for the terminal to obtain higher linear output power in real time, thereby improving PA linearity and improving uplink. Coverage purpose.
  • the terminal starts the self-calibration process of the power amplifier PA to obtain a pre-distortion calibration file, including: the terminal gradually increases the input power of the PA to a target maximum transmit power according to a preset step size.
  • the correspondence relationship is a relationship of the output power phase with the input power amplitude; and generating a predistortion calibration file according to the first correspondence relationship and the second correspondence relationship.
  • the preset step size may be, for example, 0.5 dbm, 1 dbm, etc.
  • the value of the target maximum transmit power may be, for example, 28 dbm, 31 dbm, etc., and the value may be an empirical value, which is not limited herein.
  • the specific configuration of the first correspondence relationship and the second correspondence relationship may be, for example, a variation curve, which is not limited herein.
  • the terminal may synchronously record the output power amplitude and the output power phase of the PA by controlling the input power of the PA from a preset initial value and gradually increasing to a target maximum transmit power according to a preset step size.
  • the output is output with the input AM/AM (output amplitude as a function of input amplitude) and AM/PM (output phase as a function of input amplitude).
  • the linear power output range of the terminal is improved, which reduces the generation of nonlinear interference.
  • the terminal receiving the system broadcast message from the network device, determining the actual transmit power required by the terminal includes: the terminal receiving a system broadcast message from the network device, and obtaining a downlink reference signal. Initial power; measuring actual reference signal received power RSRP; determining spatial propagation loss according to the downlink reference signal initial power and the actual reference signal received power; determining according to the spatial propagation loss and uplink power control of the physical random access channel PRACH The actual transmit power required by the terminal.
  • the terminal may determine a spatial propagation loss according to a difference between the initial power of the downlink reference signal and the received power of the actual reference signal.
  • the terminal calculates the required transmit power value by actually calculating the spatial propagation loss value, avoids the use of excessively high transmit power, and reduces the actual power consumption of the terminal.
  • the terminal determines the actual transmit power required by the terminal according to the spatial propagation loss and the uplink power control of the physical random access channel PRACH, including: the terminal calculates the terminal according to the following formula. The actual transmit power required,
  • P PRACH,f,c (i) ⁇ P CMAX,f,c (i),P PRACH,target+ PL f,c ⁇
  • P PRACH,f,c (i) represents the actual transmit power required by the terminal
  • P CMAX,f,c (i) represents the maximum transmit power of the terminal defined by the network
  • P PRACH,target represents network expectation The resulting target received power
  • PL f,c represents the spatial propagation loss
  • i represents the transmission time.
  • the terminal starts the self-calibration process of the power amplifier PA, and after obtaining the pre-distortion calibration file, the method further includes: the terminal calling the pre-distortion calibration file to determine the high after the pre-distortion Transmitting power; performing uplink data transmission or initiating a random access procedure according to the pre-distorted high transmission power.
  • the terminal may call the predistortion calibration file to determine the pre-distorted high transmit power, and perform uplink data transmission or initiate random connection according to the pre-distorted high transmit power.
  • the effective output power of the PA can be improved to some extent.
  • the method before the terminal receives a system broadcast message from the network device, the method further includes: the terminal detects an uplink data transmission request, or
  • the terminal detects an uplink scheduling instruction from a network device.
  • the terminal may perform the actual transmit power calculation when there is an uplink data transmission requirement or when the uplink scheduling instruction is detected, and perform a self-calibration process of the PA after the weak signal scenario is identified, and generate a pre- The distortion calibration file is used to improve the PA linearity.
  • the trigger condition is defined to ensure that the pre-distortion calibration file dynamically adjusted in the current period is applied to the data transmission or random access process in real time, improving the accuracy of the dynamic pre-distortion calibration file and real-time.
  • FIG. 3 is another output power adjustment method provided by an embodiment of the present application, which is applied to the foregoing example communication system, and the method includes:
  • the network device sends a system broadcast message to the terminal, where the system broadcast message is used to determine an actual transmit power required by the terminal currently in an idle state, and the required actual transmit power is used for the terminal to start.
  • the self-calibration process of the power amplifier PA results in a predistortion calibration file for determining the pre-distorted high transmit power, the required actual transmit power being greater than the preset transmit power.
  • the network device sends a system broadcast message to the terminal, where the system broadcast message is used to determine an actual transmit power required by the terminal that is currently in an idle state, and the terminal detects that the actual transmit power is greater than
  • the transmit power is preset
  • the self-calibration process of the power amplifier PA is started to obtain a pre-distortion calibration file, and the pre-distorted high transmit power is determined according to the pre-distortion calibration file.
  • the weak signal scenario can be identified based on the transmit power ratio, and the predistortion calibration file adapted to the current scene environment condition is dynamically generated in real time through the self-calibration process of the PA, so that the terminal can perform the calibration file according to the dynamic predistortion. Determining the high transmit power after pre-distortion, and performing uplink data transmission or initiating a random access process according to the high transmit power in the current scenario, which is beneficial for the terminal to obtain higher linear output power in real time, thereby improving PA linearity and improving uplink. Coverage purpose.
  • the method further includes: the network device receiving uplink data sent by the terminal according to the pre-distorted high transmit power.
  • the terminal may call the predistortion calibration file to determine the pre-distorted high transmit power, and perform uplink data transmission according to the pre-distorted high transmit power, by improving the PA.
  • the linearity can increase the effective output power of the PA to some extent.
  • the method further includes: the network device receiving a random access request sent by the terminal according to the pre-distorted high transmit power .
  • the terminal may call the predistortion calibration file to determine the pre-distorted high transmit power, and perform random access according to the pre-distorted high transmit power, by improving the PA.
  • the linearity can increase the effective output power of the PA to some extent.
  • the method before the network device sends a system broadcast message to the terminal, the method further includes: the network device sending an uplink scheduling instruction to the terminal.
  • the terminal specifically performs the actual transmit power calculation when the uplink scheduling instruction is detected, and performs a self-calibration process of the PA after identifying the weak signal scenario to generate a pre-distortion calibration file to improve the PA linearity.
  • the pre-distortion calibration file dynamically adjusted in the current time period is applied in real time in the data transmission or random access process, and the use precision and real-time performance of the dynamic pre-distortion calibration file are improved.
  • FIG. 4 is a schematic diagram of an output power adjustment method according to an embodiment of the present application, which is applied to the above example communication system, and the method includes:
  • the network device sends a system broadcast message to the terminal, where the system broadcast message is used to determine an actual transmit power required by the terminal currently in an idle state, and the required actual transmit power is used for the terminal to start.
  • the self-calibration process of the power amplifier PA results in a predistortion calibration file for determining the pre-distorted high transmit power, the required actual transmit power being greater than the preset transmit power.
  • the terminal receives a system broadcast message from a network device, determines an actual transmit power required by the terminal, and the terminal is currently in an idle state;
  • the self-calibration process of the power amplifier PA is started to obtain a pre-distortion calibration file, and the pre-distortion calibration file is used to determine the pre-correction file. High transmit power after distortion.
  • the terminal when the terminal is in an idle state, it first receives a system broadcast message from the network device, determines the actual transmit power required, and secondly, detects that the required actual transmit power is greater than the preset transmit power.
  • a predistortion calibration file is obtained, and the predistortion calibration file is used to determine the high transmit power after predistortion.
  • the weak signal scenario can be identified based on the transmit power ratio, and the predistortion calibration file adapted to the current scene environment condition is dynamically generated in real time through the self-calibration process of the PA, so that the terminal can perform the calibration file according to the dynamic predistortion. Determining the high transmit power after pre-distortion, and performing uplink data transmission or initiating a random access process according to the high transmit power in the current scenario, which is beneficial for the terminal to obtain higher linear output power in real time, thereby improving PA linearity and improving uplink. Coverage purpose.
  • FIG. 5 is a schematic structural diagram of a terminal according to an embodiment of the present disclosure.
  • the terminal is a first terminal.
  • the terminal includes a processor, a memory, and a transceiver. And one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the processor, the program comprising instructions for performing the following steps;
  • the self-calibration process of the power amplifier PA is started to obtain a predistortion calibration file, and the predistortion calibration file is used to determine the high transmit power after the predistortion.
  • the terminal when the terminal is in an idle state, it first receives a system broadcast message from the network device, determines the actual transmit power required, and secondly, detects that the required actual transmit power is greater than the preset transmit power.
  • a predistortion calibration file is obtained, and the predistortion calibration file is used to determine the high transmit power after predistortion.
  • the weak signal scenario can be identified based on the transmit power ratio, and the predistortion calibration file adapted to the current scene environment condition is dynamically generated in real time through the self-calibration process of the PA, so that the terminal can perform the calibration file according to the dynamic predistortion. Determining the high transmit power after pre-distortion, and performing uplink data transmission or initiating a random access process according to the high transmit power in the current scenario, which is beneficial for the terminal to obtain higher linear output power in real time, thereby improving PA linearity and improving uplink. Coverage purpose.
  • the instructions in the program are specifically configured to perform the following operations: controlling the input power of the PA according to a preset During the step of gradually increasing the step size to the target maximum transmit power, recording the output power amplitude and the output power phase of the PA, and obtaining a first correspondence relationship and a second correspondence relationship, where the first correspondence relationship is an output power amplitude with an input power a relationship of a change in amplitude, the second correspondence is a relationship of an output power phase as a function of an input power amplitude; and a pre-distortion calibration file generated according to the first correspondence and the second correspondence.
  • the instructions in the program are specifically configured to: receive a system from the network device Broadcasting a message, obtaining a downlink reference signal initial power; and for measuring an actual reference signal received power RSRP; and for determining a spatial propagation loss according to the downlink reference signal initial power and the actual reference signal received power;
  • the spatial propagation loss and the uplink power control of the physical random access channel PRACH determine the actual transmit power required by the terminal.
  • the instructions in the program are specifically used to perform the following: Operation: Calculate the actual transmit power required by the terminal according to the following formula,
  • P PRACH,f,c (i) ⁇ P CMAX,f,c (i),P PRACH,target+ PL f,c ⁇
  • P PRACH,f,c (i) represents the actual transmit power required by the terminal
  • P CMAX,f,c (i) represents the maximum transmit power of the terminal defined by the network
  • P PRACH,target represents network expectation The resulting target received power
  • PL f,c represents the spatial propagation loss
  • i represents the transmission time.
  • the program further includes instructions for: initiating a self-calibration process of the power amplifier PA, after obtaining a predistortion calibration file, invoking the predistortion calibration file to determine the pre High distortion transmit power; and for performing uplink data transmission or initiating a random access procedure according to the pre-distorted high transmit power.
  • the program further includes instructions for: detecting an uplink data transmission request before receiving the system broadcast message from the network device, or detecting an uplink scheduling from the network device instruction.
  • FIG. 6 is a schematic structural diagram of a network device according to an embodiment of the present disclosure.
  • the network device includes a processor, a memory, a communication interface, and one or more.
  • a program wherein the one or more programs are stored in the memory and configured to be executed by the processor, the program comprising instructions for performing the following steps;
  • the process obtains a predistortion calibration file for determining a high distortion power after predistortion, the required actual transmit power being greater than a preset transmit power.
  • the network device sends a system broadcast message to the terminal, where the system broadcast message is used to determine an actual transmit power required by the terminal that is currently in an idle state, and the terminal detects that the actual transmit power is greater than
  • the transmit power is preset
  • the self-calibration process of the power amplifier PA is started to obtain a pre-distortion calibration file, and the pre-distorted high transmit power is determined according to the pre-distortion calibration file.
  • the weak signal scenario can be identified based on the transmit power ratio, and the predistortion calibration file adapted to the current scene environment condition is dynamically generated in real time through the self-calibration process of the PA, so that the terminal can perform the calibration file according to the dynamic predistortion. Determining the high transmit power after pre-distortion, and performing uplink data transmission or initiating a random access process according to the high transmit power in the current scenario, which is beneficial for the terminal to obtain higher linear output power in real time, thereby improving PA linearity and improving uplink. Coverage purpose.
  • the program further includes instructions for: after transmitting the system broadcast message to the terminal, receiving uplink data sent by the terminal according to the pre-distorted high transmit power .
  • the program further includes instructions for: after transmitting the system broadcast message to the terminal, receiving a random connection from the terminal according to the pre-distorted high transmit power transmission Into the request.
  • the program further includes instructions for transmitting an uplink scheduling instruction to the terminal before transmitting the system broadcast message to the terminal.
  • the terminal and the network device include corresponding hardware structures and/or software modules for performing the respective functions in order to implement the above functions.
  • the present application can be implemented in a combination of hardware or hardware and computer software in combination with the elements and algorithm steps of the various examples described in the embodiments disclosed herein. Whether a function is implemented in hardware or computer software to drive hardware depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods for each particular application to implement the described functionality, but such implementation should not be considered to be beyond the scope of the application.
  • the embodiments of the present application may perform the division of functional units on the terminal and the network device according to the foregoing method.
  • each functional unit may be divided according to each function, or two or more functions may be integrated into one processing unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software program module. It should be noted that the division of the unit in the embodiment of the present application is schematic, and is only a logical function division. In actual implementation, there may be another division manner.
  • FIG. 7 shows a block diagram of a possible functional unit composition of the terminal involved in the above embodiment, which is a first terminal.
  • the terminal 700 includes a processing unit 702 and a communication unit 703.
  • the processing unit 702 is configured to perform control management on the actions of the terminal.
  • the processing unit 702 is configured to support the terminal to perform step 201 in FIG. 2, 401 in FIG. 4, and/or other processes for the techniques described herein.
  • the communication unit 703 is for supporting communication between the terminal and other devices, such as communication with the network device shown in FIG. 6.
  • the terminal may further include a storage unit 701 for storing program codes and data of the terminal.
  • the processing unit 702 can be a processor or a controller
  • the communication unit 703 can be a transceiver, a transceiver circuit, a radio frequency chip, etc.
  • the storage unit 701 can be a memory.
  • the processing unit 702 is configured to receive, by using the communication unit 703, a system broadcast message from a network device, determine an actual transmit power required by the terminal, the terminal is currently in an idle state, and is configured to detect the When the actual transmit power required by the terminal is greater than the preset transmit power, the self-calibration process of the power amplifier PA is started to obtain a predistortion calibration file, which is used to determine the high transmit power after predistortion.
  • the terminal when the terminal is in an idle state, it first receives a system broadcast message from the network device, determines the actual transmit power required, and secondly, when detecting that the required actual transmit power is greater than the preset transmit power, the start power
  • the self-calibration process of the amplifier PA results in a predistortion calibration file that is used to determine the high transmit power after predistortion.
  • the weak signal scenario can be identified based on the transmit power ratio, and the predistortion calibration file adapted to the current scene environment condition is dynamically generated in real time through the self-calibration process of the PA, so that the terminal can perform the calibration file according to the dynamic predistortion.
  • the processing unit 702 is specifically configured to: gradually increase the input power of the PA according to a preset step size.
  • the output power amplitude and the output power phase of the PA are recorded, and a first correspondence relationship and a second correspondence relationship are obtained, where the first correspondence relationship is a relationship between the output power amplitude and the input power amplitude.
  • the second correspondence relationship is a relationship between an output power phase and an input power amplitude; and configured to generate a predistortion calibration file according to the first correspondence relationship and the second correspondence relationship.
  • the processing unit 702 is specifically configured to: receive, by the communication unit, a device from the network device.
  • the system broadcasts a message, obtains a downlink reference signal initial power; and is configured to measure an actual reference signal received power RSRP; and is configured to determine a spatial propagation loss according to the downlink reference signal initial power and the actual reference signal received power;
  • the spatial propagation loss and the uplink power control of the physical random access channel PRACH determine the actual transmit power required by the terminal.
  • the processing unit 702 is specifically configured to: according to the spatial propagation loss and the uplink power control of the physical random access channel (PRACH), determine the actual transmit power required by the terminal, according to the following The formula calculates the actual transmit power required by the terminal,
  • P PRACH,f,c (i) ⁇ P CMAX,f,c (i),P PRACH,target+ PL f,c ⁇
  • P PRACH,f,c (i) represents the actual transmit power required by the terminal
  • P CMAX,f,c (i) represents the maximum transmit power of the terminal defined by the network
  • P PRACH,target represents network expectation The resulting target received power
  • PL f,c represents the spatial propagation loss
  • i represents the transmission time.
  • the processing unit 702 is further configured to: determine, by using the communication unit 703, the pre-distortion calibration file to determine Decoding high transmit power; and for performing uplink data transmission or initiating a random access procedure according to the pre-distorted high transmit power.
  • the processing unit 702 is further configured to: detect an uplink data transmission request, or detect an uplink data transmission request from the network device before receiving the message from the network device by the communication unit 703. Upstream scheduling instructions.
  • the terminal involved in the embodiment of the present application may be the terminal shown in FIG. 5.
  • FIG. 8 shows a block diagram of one possible functional unit configuration of the network device involved in the above embodiment.
  • the network device 800 includes a processing unit 802 and a communication unit 803.
  • the processing unit 802 is configured to control and manage the actions of the network device.
  • the processing unit 802 is configured to support the network device to perform step 301 in FIG. 3, step 402 in FIG. 4 and/or other techniques for the techniques described herein. process.
  • the communication unit 803 is for supporting communication between the network device and other devices, such as communication with the terminal shown in FIG.
  • the network device may further include a storage unit 801 for storing program codes and data of the network device.
  • the processing unit 802 can be a processor or a controller, and can be, for example, a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), and an application-specific integrated circuit (Application-Specific). Integrated Circuit (ASIC), Field Programmable Gate Array (FPGA) or other programmable logic device, transistor logic device, hardware component, or any combination thereof. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure.
  • the processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like.
  • the communication unit 803 may be a transceiver, a transceiver circuit, or the like, and the storage unit 801 may be a memory.
  • the processing unit 802 is configured to send, by using the communication unit 803, a system broadcast message, where the system broadcast message is used to determine an actual transmit power required by the terminal currently in an idle state, the required The actual transmit power is used by the terminal to start the self-calibration process of the power amplifier PA, and a pre-distortion calibration file is obtained.
  • the pre-distortion calibration file is used to determine the high-transmit power after pre-distortion, and the required actual transmit power is greater than the pre- Set the transmit power.
  • the network device sends a system broadcast message to the terminal, where the system broadcast message is used to determine the actual transmit power required by the terminal that is currently in an idle state, and the terminal detects that the actual transmit power is greater than the preset transmit power.
  • the self-calibration process of the power amplifier PA is started, a pre-distortion calibration file is obtained, and the pre-distorted high transmission power is determined according to the pre-distortion calibration file.
  • the weak signal scenario can be identified based on the transmit power ratio, and the predistortion calibration file adapted to the current scene environment condition is dynamically generated in real time through the self-calibration process of the PA, so that the terminal can perform the calibration file according to the dynamic predistortion. Determining the high transmit power after pre-distortion, and performing uplink data transmission or initiating a random access process according to the high transmit power in the current scenario, which is beneficial for the terminal to obtain higher linear output power in real time, thereby improving PA linearity and improving uplink. Coverage purpose.
  • the processing unit 802 is further configured to receive, by the communication unit 803, the predistortion according to the predistortion from the terminal. Uplink data sent by high transmit power.
  • the processing unit 802 is further configured to: receive, by the communication unit 803, the pre-distortion according to the pre-distortion from the terminal A random access request sent by a high transmit power.
  • the processing unit 802 is further configured to send an uplink scheduling instruction to the terminal by using the communication unit 803 before sending the system broadcast message to the terminal by using the communication unit 803.
  • the network device involved in the embodiment of the present application may be the network device shown in FIG. 6.
  • the embodiment of the present application further provides a computer readable storage medium, wherein the computer readable storage medium stores a computer program for electronic data exchange, wherein the computer program causes the computer to execute a terminal as in the above method embodiment Some or all of the steps described.
  • the embodiment of the present application further provides a computer readable storage medium, wherein the computer readable storage medium stores a computer program for electronic data exchange, wherein the computer program causes the computer to execute a network in the method embodiment as described above Some or all of the steps described by the device.
  • the embodiment of the present application further provides a computer program product, wherein the computer program product comprises a non-transitory computer readable storage medium storing a computer program, the computer program being operative to cause a computer to perform the method embodiment as described above Some or all of the steps described in the terminal.
  • the computer program product can be a software installation package.
  • the embodiment of the present application further provides a computer program product, wherein the computer program product comprises a non-transitory computer readable storage medium storing a computer program, the computer program being operative to cause a computer to perform a network as in the above method Some or all of the steps described by the device.
  • the computer program product can be a software installation package.
  • the steps of the method or algorithm described in the embodiments of the present application may be implemented in a hardware manner, or may be implemented by a processor executing software instructions.
  • the software instructions may be composed of corresponding software modules, which may be stored in a random access memory (RAM), a flash memory, a read only memory (ROM), an erasable programmable read only memory ( Erasable Programmable ROM (EPROM), electrically erasable programmable read only memory (EEPROM), registers, hard disk, removable hard disk, compact disk read only (CD-ROM) or any other form of storage medium known in the art.
  • An exemplary storage medium is coupled to the processor to enable the processor to read information from, and write information to, the storage medium.
  • the storage medium can also be an integral part of the processor.
  • the processor and the storage medium can be located in an ASIC. Additionally, the ASIC can be located in an access network device, a target network device, or a core network device. Of course, the processor and the storage medium may also exist as discrete components in the access network device, the target network device, or the core network device.
  • the functions described in the embodiments of the present application may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • software it 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.
  • the processes or functions described in accordance with embodiments of the present application are generated in whole or in part.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transmission to another website site, computer, server, or data center by wire (eg, coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (eg, infrared, wireless, microwave, etc.).
  • the computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a digital video disc (DVD)), or a semiconductor medium (for example, a solid state disk (SSD)). )Wait.
  • a magnetic medium for example, a floppy disk, a hard disk, a magnetic tape
  • an optical medium for example, a digital video disc (DVD)
  • DVD digital video disc
  • SSD solid state disk

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
  • Transmitters (AREA)

Abstract

La présente invention concerne un procédé de réglage de puissance de sortie et un produit associé. Le procédé comprend les étapes consistant : à recevoir, par un terminal, un message de diffusion de système en provenance d'un dispositif réseau, et à déterminer la puissance de transmission réelle requise par le terminal, le terminal étant actuellement dans un état inactif ; et lorsqu'il est détecté que la puissance de transmission réelle requise par le terminal est supérieure à la puissance de transmission prédéfinie, à lancer un processus d'auto-étalonnage d'un amplificateur de puissance (PA) pour obtenir un fichier d'étalonnage par distorsion préalable, le fichier d'étalonnage par distorsion préalable étant destiné à déterminer la puissance de transmission élevée soumise à une distorsion préalable. Selon les modes de réalisation de la présente invention, l'étalonnage de la périodicité dynamique d'un trajet de transmission d'un terminal est réalisé au moyen d'une interaction dynamique entre le terminal et un réseau, de sorte que la distorsion préalable du PA puisse être appliquée dynamiquement à un terminal à ondes millimétriques, d'où une amélioration de la puissance de transmission en liaison montante.
PCT/CN2018/076827 2018-02-14 2018-02-14 Procédé de réglage de puissance de sortie et produit associé WO2019157702A1 (fr)

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