CN115833827A - Control method and device for phase-locked loop, communication device and storage medium - Google Patents

Abstract

The application provides a control method and device of a phase-locked loop, a communication device and a storage medium. Wherein the phase locked loop comprises a multi-band voltage controlled oscillator, and the control method comprises: determining a first parameter, wherein the first parameter is related to a target output frequency point of the phase-locked loop; determining a first target working frequency band of the multi-band voltage-controlled oscillator according to the first parameter and a mapping relation between a plurality of preset values of the first parameter and a plurality of working frequency bands of the multi-band voltage-controlled oscillator; and controlling the multi-band voltage-controlled oscillator to work in the first target working frequency band.

Description

Control method and device for phase-locked loop, communication device and storage medium

Technical Field

The present application relates to the field of communications technologies, and in particular, to a method and an apparatus for controlling a phase-locked loop, a communication apparatus, and a storage medium.

Background

A phase locked loop having a multi-band voltage controlled oscillator is generally used in the related art to generate a clock signal of a target frequency. Before the phase-locked loop locks the target frequency, the target working frequency band of the voltage-controlled oscillator corresponding to the target frequency needs to be determined through frequency calibration, and the target frequency can be locked in the target working frequency band through the phase-locked loop. In the related art, when the target working frequency band of the multi-band voltage-controlled oscillator is determined, the frequency calibration is usually performed by adopting a bisection method, and the voltage-controlled oscillator needs to perform multiple working frequency band transformations to determine the target frequency band, so that the locking time of the phase-locked loop is longer, and the communication delay and the state transition time of a communication system are increased.

Disclosure of Invention

The application provides a control method and device of a phase-locked loop, a communication device and a storage medium. Various aspects of embodiments of the present application are described below.

In a first aspect, a method for controlling a phase-locked loop including a multi-band voltage-controlled oscillator is provided, the method including: determining a first parameter, wherein the first parameter is related to a target output frequency point of the phase-locked loop; determining a first target working frequency band of the multi-band voltage-controlled oscillator according to the first parameter and a mapping relation between a plurality of preset values of the first parameter and a plurality of working frequency bands of the multi-band voltage-controlled oscillator; and controlling the multi-band voltage-controlled oscillator to work in the first target working frequency band.

Optionally, the first parameter is a target output frequency point of the phase-locked loop; the determining a first target operating frequency band of the multi-band voltage-controlled oscillator comprises: and determining the first target working frequency band according to the target output frequency point and a preset mapping relation between the output frequency of the phase-locked loop and the working frequency band of the multi-band voltage-controlled oscillator.

Optionally, the phase-locked loop is applied to a transmitter, the transmitter comprising a plurality of phase-locked loops; the first parameter comprises at least one of the following operating parameters of the transmitter: the method comprises the following steps that the frequency band of a signal to be transmitted, the central frequency point of the signal to be transmitted, the power of the signal to be transmitted, the mark of a target phase-locked loop, an antenna port for transmitting the signal to be transmitted and a radio frequency front-end interface mark are included; wherein the target phase-locked loop is included as one of the plurality of phase-locked loops; the method further comprises the following steps: determining a second target working frequency band of the multi-band voltage-controlled oscillator of the target phase-locked loop corresponding to the first parameter according to the first parameter and a preset mapping relation between various working parameters of the transmitter and the working frequency bands of the multi-band voltage-controlled oscillators in the plurality of phase-locked loops; and controlling a multi-band voltage-controlled oscillator in the target phase-locked loop to work in the second target working frequency band.

Optionally, the first parameter includes a central frequency point of a target bandwidth segment to be switched; the determining the first target working frequency band includes, in response to a bandwidth segment switching instruction, determining the first target working frequency band according to a central frequency point of the target bandwidth segment to be switched and a mapping relationship between the central frequency points of a plurality of preset bandwidth segments and the working frequency band of the multi-band voltage-controlled oscillator.

Optionally, the first parameter is: when receiving discontinuously, the center frequency point of the downlink signal of the current time slot; the determining the first target frequency band includes: determining the first target frequency band according to the central frequency point and the mapping relation between a plurality of preset central frequencies of the downlink signal and a plurality of working frequency bands of the multi-band voltage-controlled oscillator; the method further comprises the following steps: and controlling a multi-band voltage-controlled oscillator in the target phase-locked loop to work at the first target working frequency in the next time slot of the current time slot.

In a second aspect, there is provided an apparatus for controlling a phase-locked loop including a multi-band voltage controlled oscillator, the apparatus comprising: the first determining unit is used for determining a first parameter, wherein the first parameter comprises one or more of parameters related to a target output frequency point of the phase-locked loop; a second determining unit, configured to determine a first target operating frequency band of the multi-band voltage-controlled oscillator according to the first parameter and a mapping relationship between a plurality of preset values of the first parameter and a plurality of operating frequency bands of the multi-band voltage-controlled oscillator in the phase-locked loop; and the control unit is used for controlling the multi-band voltage-controlled oscillator to work in the first target working frequency band.

Optionally, the first parameter is a target output frequency point of the phase-locked loop; the determining a first target operating frequency band of the multi-band voltage-controlled oscillator comprises: and determining the first target working frequency band according to the target output frequency point and a preset mapping relation between the output frequency of the phase-locked loop and the working frequency band of the multi-band voltage-controlled oscillator.

Optionally, the phase-locked loop is applied to a transmitter, the transmitter comprising a plurality of phase-locked loops; the first parameter comprises at least one of the following plurality of operating parameters of the transmitter: the method comprises the following steps that the frequency band of a signal to be transmitted, the central frequency point of the signal to be transmitted, the power of the signal to be transmitted, the mark of a target phase-locked loop, an antenna port for transmitting the signal to be transmitted and a radio frequency front-end interface mark are set; wherein the target phase-locked loop is included as one of the plurality of phase-locked loops; the device further comprises: a third determining unit, configured to determine, according to the first parameter and a preset mapping relationship between multiple working parameters of the transmitter and working frequency bands of multiple frequency band voltage-controlled oscillators in the multiple phase-locked loops, a second target working frequency band of the multiple frequency band voltage-controlled oscillator of the target phase-locked loop corresponding to the first parameter; the control unit is further configured to: and controlling a multi-band voltage-controlled oscillator in the target phase-locked loop to work in the second target working frequency band.

Optionally, the first parameter includes a central frequency point of a target bandwidth segment to be switched; the determining the first target working frequency band includes, in response to a bandwidth segment switching instruction, determining the first target working frequency band according to a central frequency point of the target bandwidth segment to be switched and a mapping relationship between the central frequency points of a plurality of preset bandwidth segments and the working frequency band of the multi-band voltage-controlled oscillator.

Optionally, the first parameter includes: when receiving discontinuously, the center frequency point of the downlink signal of the current time slot; the determining the first target frequency band includes: determining the first target frequency band according to the central frequency point and the mapping relation between a plurality of preset central frequencies of the downlink signal and a plurality of working frequency bands of the multi-band voltage-controlled oscillator; the control unit is further configured to: and controlling a multi-band voltage-controlled oscillator in the target phase-locked loop to work at the first target working frequency in the next time slot of the current time slot.

In a third aspect, a communication apparatus is provided, the apparatus comprising: the radio frequency chip comprises a phase-locked loop, wherein the phase-locked loop comprises a multi-band voltage-controlled oscillator; the baseband chip is connected with the radio frequency chip, and a storage unit is arranged in the baseband chip; the radio frequency chip is configured to: determining a first parameter, wherein the first parameter is related to a target output frequency point of the phase-locked loop; determining a first target working frequency band of the multi-band voltage-controlled oscillator according to the first parameter and a first mapping relation stored in the storage unit; the first mapping relation is a mapping relation between a plurality of values of the first parameter and a plurality of working frequency bands of the multi-band voltage-controlled oscillator; and controlling the multi-band voltage-controlled oscillator to work in the first target working frequency band.

Optionally, the first parameter is a target output frequency point of the phase-locked loop; the determining a first target operating frequency band of the multi-band voltage-controlled oscillator comprises: and determining the first target working frequency band according to the target output frequency point and a preset mapping relation between the output frequency of the phase-locked loop and the working frequency band of the multi-band voltage-controlled oscillator.

Optionally, the phase-locked loop is applied to a transmitter, the transmitter comprising a plurality of phase-locked loops; the first parameter comprises at least one of the following plurality of operating parameters of the transmitter: the method comprises the following steps that the frequency band of a signal to be transmitted, the central frequency point of the signal to be transmitted, the power of the signal to be transmitted, the mark of a target phase-locked loop, an antenna port for transmitting the signal to be transmitted and a radio frequency front-end interface mark are included; wherein the target phase-locked loop is included as one of the plurality of phase-locked loops; the device further comprises: a third determining unit, configured to determine, according to the first parameter and a preset correspondence between multiple working parameters of the transmitter and working frequency bands of multiple frequency band voltage-controlled oscillators in the multiple phase-locked loops, a second target working frequency band of the multiple frequency band voltage-controlled oscillator of the target phase-locked loop corresponding to the first parameter; the control unit is further configured to: and controlling a multi-band voltage-controlled oscillator in the target phase-locked loop to work in the second target working frequency band.

Optionally, the first parameter includes a central frequency point of a target bandwidth segment to be switched; the determining the first target working frequency band includes, in response to a bandwidth segment switching instruction, determining the first target working frequency band according to a central frequency point of the target bandwidth segment to be switched and a mapping relationship between the central frequency points of a plurality of preset bandwidth segments and the working frequency band of the multi-band voltage-controlled oscillator.

Optionally, the first parameter is: when receiving discontinuously, the central frequency point of the downlink signal of the current time slot; the determining the first target frequency band includes: determining the first target frequency band according to the central frequency point and the mapping relation between a plurality of preset central frequencies of the downlink signal and a plurality of working frequency bands of the multi-band voltage-controlled oscillator; the control unit is further configured to: and controlling a multi-band voltage-controlled oscillator in the target phase-locked loop to work at the first target working frequency in the next time slot of the current time slot.

In a fourth aspect, a computer-readable storage medium is provided, having stored thereon a computer program 5, which when executed implements the control method of the first aspect.

According to the control method provided by the embodiment of the application, the mapping relation between the relevant parameters of the output frequency point of the phase-locked loop and the working frequency band of the voltage-controlled oscillator is pre-established, and when the phase-locked loop works, the target working frequency band of the voltage-controlled oscillator is directly determined from the pre-established mapping relation according to the first parameters relevant to the target output frequency point, so that the locking time of the phase-locked loop can be reduced.

Drawings

Fig. 1 is a schematic diagram of a phase-locked loop in the related art.

Fig. 2 is a schematic configuration diagram of a phase locked loop based on a multiband voltage controlled oscillator in the related art.

Fig. 3 is an exemplary diagram of a plurality of operating frequency bands of the multiband voltage controlled oscillator of fig. 2.

Fig. 4 is a schematic diagram of a plurality of time slots that are contiguous when non-contiguous reception occurs.

Fig. 5 is a schematic flowchart of a method for controlling a phase-locked loop according to an embodiment of the present application.

Fig. 6 is a schematic structural diagram of a control device of a phase-locked loop provided in an embodiment of the present application.

Fig. 7 is a schematic structural diagram of a communication apparatus according to an embodiment of the present application.

Fig. 8 is a schematic flow chart of a terminal device cold start.

Fig. 9 is a schematic flow chart of a terminal device bandwidth portion handover.

Detailed Description

0 to make the technical field of the present application understand better, the attached drawings in the embodiments of the present application will be combined,

the technical solutions in the embodiments of the present application are clearly and completely described, and it is obvious that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms "first," "second," "third," and "fourth," 5, etc. in the description and claims of this application and in the accompanying drawings are used for distinguishing between different elements and not for describing a particular sequential order. Furthermore, the terms "comprising" and "having" and their equivalents

Any variations are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively 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 can be included in at least one embodiment of the application. The appearances of the phrase 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. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

The technical scheme of the application designs a control method and a control device of a phase-locked loop, a communication device and a storage medium. Therefore, before describing the embodiments of the present application, a phase-locked loop, an application of the phase-locked loop in the related art and problems thereof will be described in detail with reference to the accompanying drawings.

A Phase Locked Loop (PLL), also called a phase locked loop, is a frequency and phase synchronization technique implemented by using a feedback control principle. Phase locked loops exist in a variety of high frequency applications, from simple clock clean-up circuits to the trues for high performance radio communications trunks, and ultra-fast switching synthesizers in vector network analyzers, to name a few.

In the working process of the phase-locked loop circuit, the frequency and the phase of an oscillation signal in the loop are controlled by using an externally input reference clock signal, so that the frequency of an output signal is automatically tracked to the frequency of an input signal, and the frequency and the phase of the oscillation signal are kept in a fixed relation with the frequency and the phase of the input signal, for example, the frequency and the phase of the oscillation signal are the same as or in a fixed proportional relation with the frequency and the phase of the input clock signal.

Fig. 1 is a schematic diagram of a typical phase-locked loop in the related art, and the phase-locked loop 100 in fig. 1 includes a phase frequency detector 110, a charge pump 120, a low-pass filter 130, a voltage-controlled oscillator 140, and a frequency divider 150, which are connected in sequence to form the loop structure shown in fig. 1. The above-described devices will be described in detail below.

The phase frequency detector 110 has two input terminals for receiving an external reference clock signal and a feedback signal, respectively. The reference clock signal may be a fixed frequency signal generated by a crystal oscillator external to the phase locked loop 100. The phase frequency detector 110 detects a frequency difference and a phase difference between the two signals, and outputs two pulse control signals, wherein one pulse control signal is called an upper end signal (abbreviated as an UP signal), the other pulse signal is called a lower end signal (abbreviated as a DN signal), the UP signal can be a high level or a low level, and the DN signal can also be a high level or a low level; specifically, when the UP signal is at a high level, the DN signal is at a low level; conversely, when the DN signal is high, the UP signal is low. The two pulse control signals are respectively used as control signals of two switching elements of the charge pump 120 to control the on/off of the switching elements.

The charge pump 120 is also called a switched capacitor voltage converter, and is a circuit that utilizes a current mirror to rapidly charge and discharge a capacitor to change an output voltage. Control terminals of two switching elements of the charge pump 120 are respectively connected to two output terminals of the phase frequency detector 100, so that voltages with different magnitudes are output through the output terminal of the charge pump 120 according to a detection result of the phase frequency detector.

The low-pass filter 130, or may also be a loop filter, is configured to receive the voltage signal output by the charge pump 120, perform filtering processing on the voltage signal to filter noise and interference components in the voltage signal output by the charge pump, and output the filtered voltage signal to the voltage-controlled oscillator as a control signal of the voltage-controlled oscillator.

The voltage controlled oscillator 140, i.e. the voltage controlled oscillator, has a corresponding relationship between the frequency of the output signal and the input control voltage, i.e. the frequency of the output signal is a function of the input control voltage. The voltage controlled oscillator may also be referred to as a frequency modulator to generate a frequency modulated signal. It will be appreciated that in a phase locked loop circuit, the input control voltage is the voltage generated by the error signal and the voltage controlled oscillator is a controlled component in the phase locked loop circuit.

An important parameter of a voltage-controlled oscillator is the frequency-to-voltage conversion ratio, which refers to the amount of change in the output frequency of the oscillator per unit change in the input voltage, and the frequency-to-voltage conversion ratio of the voltage-controlled oscillator can be expressed as: kvco = Δ f/Δ V, where Kvco represents a frequency-voltage conversion rate, Δ f is a variation amount of the frequency of the output signal, and Δ V represents a variation amount of the input voltage.

And a frequency divider 150, disposed in a feedback loop between the voltage controlled oscillator and the phase frequency detector, for dividing the frequency of the signal input to the frequency divider to obtain a signal with a desired frequency, where an important parameter of the frequency divider is a frequency division ratio, and the frequency division ratio refers to a ratio of the frequency of the input signal to the frequency of the output signal of the frequency divider.

In the related art, a quartz crystal is usually used as an oscillator to obtain a high-precision oscillation frequency, which is used as an input signal of a phase-locked loop; since the oscillation frequency of the quartz crystal is not easily changed, the frequency dividing ratio of the frequency divider needs to be adjusted in order to obtain a signal of a desired frequency.

As an implementation manner, a frequency divider may also be disposed at an input end of the phase-locked loop, that is, an input end of a reference clock signal of the phase frequency detector; or the frequency divider is arranged on the input end of the phase-locked loop and the feedback loop at the same time, so that the output signal with decimal magnification can be obtained.

For the phase-locked loop circuit, when the frequency of the output signal is greater than the reference clock signal, the phase-locked loop circuit is called a phase-locked frequency multiplier circuit, and when the frequency of the output signal is less than the reference clock signal, the phase-locked loop circuit is called a phase-locked frequency divider circuit.

The phase-locked loop 100 in fig. 1 may be applied in a radio frequency chip of a terminal device, for example, in a signal transmitter, the phase-locked loop may output a high-frequency carrier signal based on a set frequency band and a set bandwidth, and the signal is modulated to a central frequency point by a mixer from a baseband transmission; also for example, in a receiver, the phase locked loop also produces a high frequency carrier signal, which downconverts the received high frequency signal to an intermediate frequency signal.

The frequency range of the communication signal is gradually widened in response to the development of the communication technology, which puts higher demands on the frequency range of the output signal of the phase-locked loop. In the phase-locked loop system shown in fig. 1, if it is desired that the voltage-controlled oscillator be capable of outputting a signal having a wide frequency range, the voltage-controlled oscillator is required to have a high gain. A voltage controlled oscillator with high gain is sensitive to variations in the control voltage, which is susceptible to environmental factors, such as changes in the current or control path of the charge pump. Therefore, a voltage controlled oscillator that outputs a signal having a wide frequency with a high gain has a problem of variation in an output signal.

To solve the above problem, in some related art, a voltage-controlled oscillator in a phase-locked loop may be configured as a multiband voltage-controlled oscillator, and fig. 2 shows a schematic configuration diagram of a related art phase-locked loop based on a multiband voltage-controlled oscillator. It should be noted that the portions of fig. 2 except for the multiband voltage controlled oscillator 210 are the same as those shown in fig. 1, and are not described again here.

While the multiband voltage controlled oscillator in fig. 2 has a plurality of operating frequency bands, fig. 3 shows an example of the plurality of operating frequency bands of the multiband voltage controlled oscillator, which includes 32 operating frequency bands (see band 0-band 31 in fig. 3), wherein each operating frequency band corresponds to a frequency range of the output signal of the voltage controlled oscillator.

Before the target frequency is locked, the multi-band voltage-controlled oscillator needs to determine a target working 5 working frequency band corresponding to the target frequency through frequency calibration, and then the target frequency can be locked in the target working frequency band through a phase-locked loop.

In the prior art, a dichotomy is usually adopted for frequency calibration, and a voltage-controlled oscillator needs to perform multiple working frequency band transformations to determine a target frequency band. For example, when the voltage controlled oscillator supports 32 operating bands as shown in fig. 3, the frequency calibration is performed by using the dichotomy, and the voltage controlled oscillator needs to perform frequency band conversion for 5 times to determine the target operating band; while the voltage controlled oscillator supports

When 64 working frequency bands are adopted, the dichotomy is adopted for frequency calibration, and the voltage-controlled oscillator needs to carry out frequency band conversion for 6 times to determine the target 0 working frequency band

The time for the phase of the output signal of the phase locked loop to reach the frequency phase stability is called the lock time of the phase locked loop. When the pll is applied to a wireless communication system, under the scenarios of waking up a radio frequency chip from a deep sleep, performing bandwidth part (BWP) switching, discontinuous reception, and the like, the long locking time of the pll may affect the communication efficiency of the communication system and the timing sequence of the system. The problems in the related art are exemplified in more detail below in connection with several application scenarios.

5 when the RF chip wakes up from deep sleep, the output frequency of the phase-locked loop needs to be set to be the signal frequency to be transmitted or received

The frequencies are identical, or the frequency of the output signal of the phase locked loop is identical to the current operating frequency of the terminal device or the communication system. In this scenario, after the phase-locked loop is powered on, the voltage-controlled oscillator needs to perform multiple working frequency band changes until the phase-locked loop reaches a locked state, thereby increasing communication delay and system state transition time.

BWP defines an access bandwidth smaller than the system bandwidth capability, and the transceiving operations of the terminal are performed within this bandwidth. The switching of the 0 bandwidth part is to adjust the access bandwidth, and when the central frequency point of the access bandwidth changes, the output frequency of the phase-locked loop needs to be adjusted. According to the above method, the voltage-controlled oscillator needs to change the working frequency band, so that the switching time of the bandwidth part is longer. It should be noted that, during the time of switching the bandwidth part, the terminal device cannot perform normal transceiving operation, so that a longer switching time will affect the timing of the signal, thereby affecting the communication efficiency.

If the lock time of the phase locked loop can be reduced, the time for the switching of the bandwidth part can be reduced, thereby leaving more time margin for the sending 5 and execution of the control signaling and the baseband conversion.

Under the condition of discontinuous reception, the terminal periodically detects the downlink control channel. Referring to fig. 4, fig. 4 is a schematic diagram illustrating a plurality of consecutive timeslots in a discontinuous reception scenario. According to the existing control logic, in each time slot, the multi-band voltage-controlled oscillator needs to carry out multiple times of conversion of working frequency bands according to the dichotomy to determine the target working frequency, and

and controlling the work of the phase-locked loop according to the target working frequency so as to achieve a locking state. It should be further noted that, in the discontinuous reception 0 scenario, the central frequency points of consecutive different time slots are not changed. Therefore, the lock time of the phase-locked loop is the same in each time slot, which is the lock time t shown in fig. 4.

In the discontinuous reception scenario, the same time is required to reach the locked state for each consecutive timeslot, which increases the pressure on the system timing.

In summary, in the above-mentioned application scenarios, how to reduce the locking time of the pll becomes a problem that needs to be solved urgently.

In view of the foregoing problems, embodiments of the present application provide a method and an apparatus for controlling a phase-locked loop, a communication apparatus, and a readable storage medium.

First, a control method of a phase-locked loop provided in an embodiment of the present application is described in detail with reference to the accompanying drawings.

Fig. 5 is a schematic flow chart of a method for controlling a phase-locked loop provided in an embodiment of the present application, where the phase-locked loop may be, for example, the phase-locked loop shown in fig. 1, and the phase-locked loop includes a multiband voltage-controlled oscillator. The method in fig. 5 comprises steps S510-S530.

In step S510, a first parameter is determined. The first parameter may be one or more of a plurality of parameters related to a target output frequency point of the phase-locked loop.

In some embodiments, the first parameter may be a target frequency point of the phase locked loop.

In some embodiments, the first parameter is a parameter that can be used to determine a target output frequency point of the phase-locked loop. For example, in a scenario where the phase-locked loop is applied to a transmitter, the first parameter may be one or more of a frequency band of a signal to be transmitted, a center frequency point, signal power, an identifier of a target phase-locked loop, an antenna port of a transmitted signal, and an identifier of a radio frequency front-end interface, and at this time, the first parameter is associated with a target output frequency point of the phase-locked loop. For another example, when the bandwidth is switched in a segmented manner, the first parameter may include a center frequency point of a target bandwidth segment to be switched, where the center frequency point is associated with a target output frequency point of the phase-locked loop. For another example, when discontinuous reception is performed, the first parameter may be a center frequency point of a downlink signal of the current time slot, where the center frequency point is associated with a target output frequency point of the phase-locked loop.

In step S520, a first target operating frequency band is determined according to the first parameter and a mapping relationship between a plurality of values of the first parameter and a plurality of operating frequency bands of a multi-band voltage-controlled oscillator in the phase-locked loop.

The mapping relationship may be a mapping relationship table pre-established by a offline calibration method. And when the phase-locked loop works, searching a corresponding table entry from the mapping relation table according to the current first parameter, thereby determining the target working frequency band of the voltage-controlled oscillator.

In some embodiments, the phase-locked loop is applied to a terminal or a network device, and the mapping relationship may be stored in a storage unit in the terminal or the network device.

In some embodiments, the memory cell is a non-volatile memory cell.

In some embodiments, the storage unit may be a storage unit in a baseband chip in a terminal or a network device.

In step S530, the multiband voltage controlled oscillator is controlled to operate in a first target frequency band.

After the target working frequency band of the voltage-controlled oscillator is determined according to the steps, the initial working frequency band of the voltage-controlled oscillator is set to be the first target working frequency band, so that the phase-locked loop outputs the oscillation signals with the frequency consistent with that of the target output frequency point.

According to the control method provided by the embodiment of the application, the mapping relation between the parameters related to the output frequency point of the phase-locked loop and the working frequency band of the voltage-controlled oscillator is pre-established, and when the phase-locked loop works, the target working frequency band of the voltage-controlled oscillator is determined from the pre-established mapping relation according to the first parameters related to the target output frequency point; compared with a binary search method in the prior art, the method can reduce the locking time of the phase-locked loop.

Using parameters related to the target output frequency point of the phase-locked loop

In some embodiments, when the first parameter is a target output frequency point of the phase-locked loop, the determining a first target operating frequency band of the multiband voltage-controlled oscillator corresponding to the first parameter includes:

and determining a first target working frequency band of the voltage-controlled oscillator according to the target output frequency point of the phase-locked loop and the preset mapping relation between the output frequency of the phase-locked loop and the working frequency band of the multi-band voltage-controlled oscillator.

In some embodiments, the phase-locked loop is applied to a transmitter of a terminal device, the transmitter comprising a plurality of phase-locked loops; the first parameter then comprises at least one of the following operating parameters of the transmitter: the frequency band of the signal to be transmitted, the central frequency point of the signal to be transmitted, the power of the signal to be transmitted, the identification of a target phase-locked loop, an antenna port for transmitting the signal to be transmitted and a radio frequency front-end interface identification, wherein the target phase-locked loop is one of the plurality of phase-locked loops.

The method further comprises the following steps: and determining a second target working frequency band of the multi-band voltage-controlled oscillator of the target phase-locked loop corresponding to the first parameter according to the first parameter and the preset corresponding relation between various working parameters of the transmitter and the working frequency bands of the multi-band voltage-controlled oscillators in the plurality of phase-locked loops.

And controlling a multi-band voltage-controlled oscillator in the target phase-locked loop to work in the second target working frequency band.

According to the method, when the phase-locked loop is applied to a transmitter, the target working frequency band of the multi-band voltage-controlled oscillator can be determined according to various working parameters of the transmitter and related parameters of a signal to be transmitted, so that the frequency band selection time of the voltage-controlled oscillator is shortened when the terminal is in cold start.

In some embodiments, the first parameter comprises a center frequency point of the target bandwidth portion to be switched.

The determining the first target operating frequency band includes: responding to a bandwidth subsection switching instruction, and determining the first target working frequency band according to the central frequency point of the target bandwidth subsection to be switched and the mapping relation between the central frequency points of the preset multiple bandwidth subsections and the working frequency band of the multi-band voltage-controlled oscillator.

The working frequency band of the voltage-controlled oscillator is determined based on the central frequency point of the target bandwidth part, the locking time of the phase-locked loop can be reduced, the switching time of the bandwidth part is reduced, and more time allowance can be reserved for sending and executing control instructions and baseband conversion.

In some embodiments, the first parameter is: and when the receiving is discontinuous, the center frequency point of the downlink signal of the current time slot. Determining a first target frequency band, comprising: and determining the first target frequency band according to the central frequency point and the mapping relation between a plurality of preset central frequencies of the downlink signal and a plurality of working frequency bands of the multi-band voltage-controlled oscillator.

The method further comprises the following steps: and controlling the multi-band voltage-controlled 5 oscillator in the target phase-locked loop to work at the first target working frequency in the next time slot of the current time slot.

When the method provided by the embodiment of the application is applied to a scene of discontinuous reception, the target frequency band of the multi-band voltage-controlled oscillator of the next time slot is set to be the same as the current time slot, so that the locking time of the subsequent time slot can be reduced.

The method embodiment of the present application is described above with reference to fig. 1-5, and the device embodiment of the present application is described below with reference to fig. 6-7

Examples are shown. It is to be understood that the description of the apparatus embodiments corresponds to the description of the method embodiments above, and therefore, reference may be made to the method embodiments above for part 0 which is not described in detail.

Fig. 6 is a schematic block diagram of a control apparatus of a phase-locked loop according to an embodiment of the present application, where the phase-locked loop includes a multi-band voltage-controlled oscillator, and the control apparatus 600 in fig. 6 includes:

a first determining unit 610 for determining a first parameter, the first parameter comprising a target output frequency of the phase locked loop

One or more of point-related parameters;

5 a second determining unit 620, configured to determine a second parameter according to the first parameter, and a plurality of preset values and values of the first parameter

Determining a first target working frequency band of a multi-band voltage-controlled oscillator according to a mapping relation of a plurality of working frequency bands of the multi-band voltage-controlled oscillator in the phase-locked loop;

a control unit 630, configured to control the multiband voltage controlled oscillator to operate in the first target operating frequency band.

Optionally, in some embodiments, the first parameter is a target output frequency point of the phase-locked loop; the determining the first target operating frequency band of the 0 multiband voltage-controlled oscillator comprises: outputting frequency points according to the target and presetting the lock

And determining the first target working frequency band according to the mapping relation between the output frequency of the phase loop and the working frequency band of the multi-band voltage-controlled oscillator.

Optionally, in some embodiments, the phase-locked loop is applied to a transmitter, the transmitter comprising a plurality of phase-locked loops; what is needed is

The first parameter comprises at least one of the following operating parameters of the transmitter: the frequency band of a signal to be transmitted, the central frequency point of the signal to be transmitted 5, the power of the signal to be transmitted, the identifier of a target phase-locked loop, an antenna port for transmitting the signal to be transmitted and a radio frequency front-end interface identifier; wherein the target phase-locked loop is included as one of the plurality of phase-locked loops.

The device further comprises: and the third determining unit is used for determining a second target working frequency band of the multi-band voltage-controlled oscillator of the target phase-locked loop corresponding to the first parameter according to the first parameter and the preset corresponding relation between various working parameters of the transmitter and the working frequency bands of the multi-band voltage-controlled oscillators in the plurality of phase-locked loops.

0 the control unit is further configured to: and controlling a multi-band voltage-controlled oscillator in the target phase-locked loop to work in the second target working frequency band.

Optionally, in some embodiments, the first parameter includes a center frequency point of a target bandwidth segment to be switched; the determining the first target working frequency band comprises responding to a bandwidth segmentation switching instruction, and determining the first target working frequency band according to the central frequency point of the target bandwidth segmentation to be switched and the mapping relation between the central frequency points of a plurality of preset bandwidth segmentation and the working frequency band of the multi-band voltage-controlled oscillator.

Optionally, in some embodiments, the first parameter is: and when the receiving is discontinuous, the center frequency point of the downlink signal of the current time slot.

The determining the first target frequency band includes: and determining the first target frequency band according to the central frequency point and the mapping relation between a plurality of preset central frequencies of the downlink signal and a plurality of working frequency bands of the multi-band voltage-controlled oscillator.

The control unit is further configured to: and controlling a multi-band voltage-controlled oscillator in the target phase-locked loop to work at the first target working frequency in the next time slot of the current time slot.

Fig. 7 is a schematic structural diagram of a communication apparatus 700 according to an embodiment of the present application. The communication device may be a wireless communication device, such as a wireless terminal device like a mobile phone. The communication apparatus 700 in fig. 7 includes:

the RF chip 710 includes a phase locked loop including a multi-band voltage controlled oscillator.

And the baseband chip 720 is connected with the radio frequency chip 710, and a storage unit is arranged in the baseband chip 720.

Wherein the radio frequency chip 710 is configured to:

and determining a first parameter, wherein the first parameter is related to a target output frequency point of the phase-locked loop.

And determining a first target working frequency band of the voltage-controlled oscillator in the phase-locked loop according to the first parameter and a first mapping relation stored in the storage unit, wherein the first mapping relation is a mapping relation between a plurality of values of the first parameter and a plurality of working frequency bands of a plurality of multi-band voltage-controlled oscillators.

And controlling the voltage-controlled oscillator to work at a first target working frequency band.

Optionally, the first parameter is a target output frequency point of the phase-locked loop.

The determining a first target operating frequency band of the multi-band voltage-controlled oscillator comprises: determining the first target working frequency band according to the target output frequency point and a second mapping relation stored in the storage unit; and the second mapping relation is the mapping relation between the output frequency of the phase-locked loop and the working frequency band of the multi-band voltage-controlled oscillator.

Optionally, the communication device is applied to a transmitter comprising a plurality of phase locked loops.

The first parameter comprises at least one of the following plurality of operating parameters of the transmitter: the frequency band of a signal to be transmitted, the central frequency point of the signal to be transmitted, the power of the signal to be transmitted, an identifier of a target phase-locked loop, an antenna port for transmitting the signal to be transmitted and an identifier of a radio frequency front-end interface, wherein the target phase-locked loop is one of the plurality of phase-locked loops.

The radio frequency chip is further configured to: determining a second target working frequency band of the multi-band voltage-controlled oscillator of the target phase-locked loop corresponding to the first parameter according to the first parameter and a third mapping relation stored in the storage unit; the third mapping relation is a mapping relation between various working parameters of the transmitter and working frequency bands of a multi-band voltage-controlled oscillator in the plurality of phase-locked loops.

And controlling a multi-band voltage-controlled oscillator in the target phase-locked loop to work in the second target working frequency band.

Optionally, the first parameter includes a central frequency point of the target bandwidth segment to be switched.

The determining the first target working frequency band includes, in response to a bandwidth segment switching instruction, determining the first target working frequency band according to a central frequency point of the target bandwidth segment to be switched and a fourth mapping relation stored in the storage unit.

The fourth mapping relation is a mapping relation between a central frequency point of a plurality of bandwidth segments and an operating frequency band of the multi-band voltage-controlled oscillator.

Optionally, the first parameter is: and when the receiving is discontinuous, the center frequency point of the downlink signal of the current time slot.

The determining the first target frequency band includes: and determining the first target frequency band according to the central frequency point and a fifth mapping relation stored in the storage unit.

The fifth mapping relationship is a mapping relationship between a plurality of center frequencies of the downlink signal and a plurality of working frequency bands of the multiband voltage-controlled oscillator.

The radio frequency chip is further configured to: and controlling a multi-band voltage-controlled oscillator in the target phase-locked loop to work at the first target working frequency in a time slot next to the current time slot.

The technical solution of the present application is further described below with reference to several application scenarios of the wireless communication device. It should be noted that the above-mentioned wireless communication device may be a terminal device, and the terminal device may include a communication apparatus as shown in fig. 7.

Fig. 8 shows a flow chart of a terminal device cold start. The cold start flow in fig. 8 includes steps S810-S860.

In step S810, the baseband chip sends an initialization command to the rf chip in advance. The initialization instruction can be sent through a high-speed interface between the baseband chip and the radio frequency chip.

In step S820, non-volatile (NV) data calibrated offline is stored in a memory unit of the baseband chip. The NV data may include a mapping relationship between a plurality of values of the first parameter and an operating frequency band of the multiband voltage controlled oscillator, as described above.

In step S830, NV data is transferred to a static random-access memory (SRAM) of the baseband chip, wherein the NV data can be transferred from the storage unit to the SRAM through a bus in the baseband chip.

In step S840, NV data is read from the storage unit into a static random-access memory (SRAM) of the rf chip. In this step, the reading of NV data may be achieved through a high-speed interface between the rf chip and the baseband chip.

In step S850, according to the first parameter of the current phase-locked loop, the NV parameter matching the first parameter is read from the SRAM, and configured to the phase-locked loop, for example, configure the target operating frequency band for the voltage-controlled oscillator.

In step S860, the voltage controlled oscillator is controlled to operate in the target operating frequency band for frequency locking.

Through the steps, the terminal equipment completes cold start.

Fig. 9 shows a schematic flow chart of the terminal device performing the bandwidth part switching, and the bandwidth part switching flow in fig. 9 includes steps S910 to S970.

In step S910, downlink Control Information (DCI) indicating a bandwidth part switching is received.

In step S920, the baseband chip sends a BWP switch instruction to the rf chip.

In step S930, the rf chip configures the NV parameter corresponding to the current first parameter to the vco. The specific implementation of this step can be seen in steps S820-S840 above.

In step S940, the voltage controlled oscillator is controlled to operate in the target operating frequency band for frequency locking.

In step S950, the rf chip sends a switch completion command to the baseband chip.

In step S960, the baseband chip feeds back BWP handover completion to the base station.

At step S970, BWP switching is completed and control and data instructions are received at the switched BWP.

Embodiments of the present application further provide a computer-readable storage medium, in which executable code is stored, and when executed, the executable code implements the method according to any of the foregoing embodiments.

The embodiment of the application also provides a computer program product. The computer program product includes a program. The computer program product can be applied to the electronic device provided by the embodiment of the application, and the program enables the computer to execute the method in the various embodiments of the application.

It should be noted that, for simplicity of description, the above-mentioned method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present application is not limited by the order of acts described, as some steps may occur in other orders or concurrently depending on the application. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required in this application.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

In the embodiments provided in the present application, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, the above-described division of the units is only one type of division of logical functions, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of some interfaces, devices or units, and may be an electric or other form.

The units described as separate parts may or may not be physically separate, and parts displayed 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 can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit may be stored in a computer readable memory if it is implemented in the form of a software functional unit and sold or used as a stand-alone product. Based on such understanding, the technical solution of the present application may be substantially implemented or a part of or all or part of the technical solution contributing to the prior art may be embodied in the form of a software product stored in a memory, and including several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the above-mentioned method of the embodiments of the present application. And the aforementioned memory comprises: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic disk, or an optical disk, and various media capable of storing program codes.

Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by associated hardware instructed by a program, which may be stored in a computer-readable memory, which may include: flash disks, read-Only memories (ROMs), random Access Memories (RAMs), magnetic or optical disks, and the like.

The foregoing detailed description of the embodiments of the present application has been presented to illustrate the principles and implementations of the present application, and the above description of the embodiments is only provided to help understand the method and the core concept of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims (12)

1. A method of controlling a phase locked loop including a multiple band voltage controlled oscillator, the method comprising:

determining a first parameter, wherein the first parameter is related to a target output frequency point of the phase-locked loop;

determining a first target working frequency band of the multi-band voltage-controlled oscillator according to the first parameter and a mapping relation between a plurality of preset values of the first parameter and a plurality of working frequency bands of the multi-band voltage-controlled oscillator;

and controlling the multi-band voltage-controlled oscillator to work in the first target working frequency band.

2. The method of claim 1,

the first parameter is a target output frequency point of the phase-locked loop;

the determining a first target operating frequency band of the multi-band voltage-controlled oscillator comprises: and determining the first target working frequency band according to the target output frequency point and a preset mapping relation between the output frequency of the phase-locked loop and the working frequency band of the multi-band voltage-controlled oscillator.

3. The method of claim 1, wherein the phase-locked loops are applied to a transmitter, the transmitter comprising a plurality of phase-locked loops;

the first parameter comprises at least one of the following plurality of operating parameters of the transmitter: the method comprises the following steps that the frequency band of a signal to be transmitted, the central frequency point of the signal to be transmitted, the power of the signal to be transmitted, the mark of a target phase-locked loop, an antenna port for transmitting the signal to be transmitted and a radio frequency front-end interface mark are included;

wherein the target phase-locked loop is included as one of the plurality of phase-locked loops;

the method further comprises the following steps:

determining a second target working frequency band of the multi-band voltage-controlled oscillator of the target phase-locked loop corresponding to the first parameter according to the first parameter and a preset mapping relation between various working parameters of the transmitter and the working frequency bands of the multi-band voltage-controlled oscillators in the plurality of phase-locked loops;

and controlling a multi-band voltage-controlled oscillator in the target phase-locked loop to work in the second target working frequency band.

4. The control method according to claim 1,

the first parameter comprises a central frequency point of a target bandwidth segment to be switched;

the determining the first target working frequency band includes, in response to a bandwidth segment switching instruction, determining the first target working frequency band according to a central frequency point of the target bandwidth segment to be switched and a mapping relationship between the central frequency points of a plurality of preset bandwidth segments and the working frequency band of the multi-band voltage-controlled oscillator.

5. The method of claim 1,

the first parameter is: when receiving discontinuously, the center frequency point of the downlink signal of the current time slot;

the determining the first target frequency band includes: determining the first target frequency band according to the central frequency point and the mapping relation between a plurality of preset central frequencies of the downlink signal and a plurality of working frequency bands of the multi-band voltage-controlled oscillator;

the method further comprises the following steps: and controlling a multi-band voltage-controlled oscillator in the target phase-locked loop to work at the first target working frequency in the next time slot of the current time slot.

6. An apparatus for controlling a phase locked loop including a multiple band voltage controlled oscillator, the apparatus comprising:

the first determining unit is used for determining a first parameter, wherein the first parameter comprises one or more of parameters related to a target output frequency point of the phase-locked loop;

a second determining unit, configured to determine a first target operating frequency band of the multi-band voltage-controlled oscillator according to the first parameter and a mapping relationship between a plurality of preset values of the first parameter and a plurality of operating frequency bands of the multi-band voltage-controlled oscillator in the phase-locked loop;

and the control unit is used for controlling the multi-band voltage-controlled oscillator to work in the first target working frequency band.

7. The apparatus of claim 6,

the first parameter is a target output frequency point of the phase-locked loop;

the determining a first target operating frequency band of the multi-band voltage-controlled oscillator comprises: and determining the first target working frequency band according to the target output frequency point and a preset mapping relation between the output frequency of the phase-locked loop and the working frequency band of the multi-band voltage-controlled oscillator.

8. The apparatus of claim 6, wherein the phase-locked loops are applied to a transmitter, the transmitter comprising a plurality of phase-locked loops;

the first parameter comprises at least one of the following plurality of operating parameters of the transmitter: the method comprises the following steps that the frequency band of a signal to be transmitted, the central frequency point of the signal to be transmitted, the power of the signal to be transmitted, the mark of a target phase-locked loop, an antenna port for transmitting the signal to be transmitted and a radio frequency front-end interface mark are included;

wherein the target phase-locked loop is included as one of the plurality of phase-locked loops;

the device further comprises:

a third determining unit, configured to determine, according to the first parameter and a preset mapping relationship between multiple working parameters of the transmitter and working frequency bands of multiple frequency band voltage-controlled oscillators in the multiple phase-locked loops, a second target working frequency band of the multiple frequency band voltage-controlled oscillator of the target phase-locked loop corresponding to the first parameter;

the control unit is further configured to: and controlling a multi-band voltage-controlled oscillator in the target phase-locked loop to work in the second target working frequency band.

9. The apparatus of claim 6,

the first parameter comprises a central frequency point of a target bandwidth segment to be switched;

the determining the first target working frequency band comprises responding to a bandwidth segmentation switching instruction, and determining the first target working frequency band according to the central frequency point of the target bandwidth segmentation to be switched and the mapping relation between the central frequency points of a plurality of preset bandwidth segmentation and the working frequency band of the multi-band voltage-controlled oscillator.

10. The apparatus of claim 6,

the first parameter includes: when receiving discontinuously, the center frequency point of the downlink signal of the current time slot;

the determining the first target frequency band includes: determining the first target frequency band according to the central frequency point and the mapping relation between a plurality of preset central frequencies of the downlink signal and a plurality of working frequency bands of the multi-band voltage-controlled oscillator;

the control unit is further configured to: and controlling a multi-band voltage-controlled oscillator in the target phase-locked loop to work at the first target working frequency in the next time slot of the current time slot.

11. A communications apparatus, the apparatus comprising:

the radio frequency chip comprises a phase-locked loop, wherein the phase-locked loop comprises a multi-band voltage-controlled oscillator;

the baseband chip is connected with the radio frequency chip, and a storage unit is arranged in the baseband chip;

the radio frequency chip is configured to:

determining a first parameter, wherein the first parameter is related to a target output frequency point of the phase-locked loop;

determining a first target working frequency band of the multi-band voltage-controlled oscillator according to the first parameter and a first mapping relation stored in the storage unit; the first mapping relation is a mapping relation between a plurality of values of the first parameter and a plurality of working frequency bands of the multi-band voltage-controlled oscillator;

and controlling the multi-band voltage-controlled oscillator to work in the first target working frequency band.

12. A computer-readable storage medium, characterized in that a computer program is stored thereon, which when executed implements the control method according to any one of claims 1-5.

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