It may be understood that the signals transmitted by the radio device may include but not limited to FMCW signals, sawtooth wave signals and the like.

Embodiments of the present disclosure do not limit a type of the memory in the chip structure. The memory may include but not limited to a register, a cache, a memory management unit (MMU) or any other device having a storing function.

In some embodiments, the memory includes registers. The registers have a high reading and writing speed, and data are transmitted in a fast speed between registers. Therefore, in the waveform control method as described above, registers are arranged, as the memory, in the chip structure. In this way, a speed of reading the frame-configuration parameters can be improved, and time desired for configuring the signals transmitted by the radio device can be further reduced, thereby improving operation efficiency of the radio device.

Embodiments of the present disclosure do not specifically limit a type or a number of the frame-configuration parameters, as long as the frame-configuration parameters are related to configuration of the signals transmitted by the radio device. In an example, the frame-configuration parameters in the present disclosure may include but not limited to a chirp rate, a starting frequency, a central frequency, a waveform duration, a waveform gap or the like.

In the following, the frame order and the frame-configuration parameters are described in further detail with reference to FIG. 3.

With reference to FIG. 3, when a modulation mode for the radio device is triangle wave modulation, by acquiring a frame order, a configuration order of frame type-I, frame type-II and a frame type-III for the frame-configuration parameters of three frames of the signal to be transmitted is acquired in one time. Frame-configuration parameters corresponding to the frame type-I, frame-configuration parameters corresponding to the frame type-II and frame-configuration parameters corresponding to the frame type-III are called in sequence. The signals to be transmitted by the radio device are configured according to the frame-configuration parameters corresponding to the frame type-I, the frame-configuration parameters corresponding to the frame type-II and the frame-configuration parameters corresponding to the frame type-III, so that the radio device sends triangle waveforms obtained by configuration according to the frame-configuration parameters corresponding to the frame type-I, the frame-configuration parameters corresponding to the frame type-II and the frame-configuration parameters corresponding to the frame type-III. The frame-configuration parameters refer to parameters such as frequency, bandwidth, waveform duration or the like of the triangle waveforms.

In some embodiments, the corresponding frame-configuration parameters include a first frame configuration parameter corresponding to a first frame of at least two adjacent frames in the frame period signals and a second frame configuration parameter corresponding to a second frame of the at least two adjacent frames, and the first frame configuration parameter and the second frame configuration parameter are different.

The waveform control method as described above is applicable to generate the frame period signals in which the frame-configuration parameters of at least two adjacent frames are different, and it is not necessary to reconfigure the radio signals at the beginning of each frame. In this way, time desired for configuring the signals to be transmitted by the radio device can be reduced and operation efficiency of the radio device can be improved. Moreover, the radio device can be kept in an operation state during the configuration, thereby preventing the problem that the radio device cannot continuously operate during configuration.

As described above, in the waveform control method provided in the present disclosure, by acquiring the frame order, a configuration order of a plurality of frame-configuration parameters within a preset duration can be acquired in one time. With one configuration, the radio device can call corresponding frame-configuration parameters in sequence according to a preset frame-configuration parameter order in the frame order. Based on the same inventive concept, in order to further improve operation efficiency of the radio device and reduce configuration time, the present disclosure provides some embodiments relating to acquiring a frame order according to a certain period.

In some embodiments, S20 may include periodically and circularly calling the corresponding frame-configuration parameters from the memory in sequence according to the frame order.

In the waveform control method as described above, the corresponding frame-configuration parameters can be circularly called, according to a certain period, in sequence according to a preset frame-configuration parameter order in the frame order by performing one configuration. In this way, time desired for configuring the signals to be transmitted by the radio device can be further reduced and operation efficiency of the radio device can be improved.

In some embodiments, the waveform control method as described above may be used to control numbers of circulation for the frame order. In the following, the process of periodically and circularly calling the corresponding frame-configuration parameters from the memory in sequence is described in further detail with reference to FIG. 4A to FIG. 4B.

In some embodiments, when an acquired frame order is “frame type-I”, as shown in FIG. 4A, frame configuration parameters corresponding to frame type-I may be called and repeated by a period of one frame. In some embodiments, when an acquired frame order is “frame type-I, frame type-II”, as shown in FIG. 4B, frame configuration parameters corresponding to frame type-I and the frame type-II may be called in sequence and circulated by a period of two frames, and so on and so forth.

In some embodiments, a set of random numbers may be acquired and the frame order may be generated based on the set of random numbers. In the following, the operation of acquiring the set of random numbers and generating the frame order based on the set of random numbers is described in further detail with reference to FIG. 4C.

In some embodiments, as shown in FIG. 4C, before transmitting the frame period signals, the chip structure calls a plurality of frame-configuration parameters corresponding to frame type-I, frame type-II, frame type-III, frame type-IV and frame type-V respectively from the external storage and stores the plurality of frame-configuration parameters in the memory. When the acquired random numbers are 1, 4, 3, 1 . . . 2, 5, a frame order of “frame type-I, frame type-IV, frame type-III, frame type-I, . . . frame type-II and frame type-V” may be generated based on the set of random numbers. Based on the frame order, the frame-configuration parameters corresponding to frame type-I, frame type-IV, frame type-III, frame type-I, . . . frame type-II and frame type-V are called in sequence.

It is noted that in the present disclosure, the category and number of frame types are not limited to the number listed above, but there may be frame types of other categories and numbers which are not specifically described in detail.

In order to improve correlation with an application scenario, so that the radio device is able to transmit signals having increased matching degree with a current application scenario, in some embodiments, as shown in FIG. 5, S20 may further include the following operations.

In S201, application environment parameters are acquired.

In S202, corresponding frame order is acquired according to intervals in which the application environment parameters fall.

In the waveform control method as described above, the current application scenario can be determined according to the intervals in which the application environment parameters fall, and the frame order can be adaptively selected according to the current application scenario. In this way, the radio device can transmit testing signals more applicable to the current application scenario, and accuracy of operation of the radio device can be improved.

In some embodiments, each frame order may be correlated with one interval in which the application environment parameters fall, so that when implementing the waveform control method as described above, a frame order can be called according to one or more correlated intervals in which the application environment parameters fall.

In some embodiment, the current application scenario may be determined according to the intervals in which the application environment parameters fall. Alternatively, an application scenario may be adaptively selected according to an actual condition. Further, a frame order of a next frame more appropriate for testing operation of the radio device may be adaptively called according to echo signals originated from signals currently transmitted, so as to achieve iterative refinement.

In the present disclosure, the types and numbers of the application environment parameters are not specifically defined. The application environment parameters may include but not limited to relative velocity, relative distance, relative angle or the like.

Taking the application environment parameters including relative velocity as an example, a relative velocity of a target object is acquired in real time, an interval in which the relative velocity falls is determined, and a frame order corresponding to the interval in which the relative velocity falls may be called.

It shall be understood that though the operations in the flow charts in FIG. 2 and FIG. 5 are shown in sequence as directed to by the arrows, the operations are not implemented in the order indicated by the arrows. Unless clearly described in the present disclosure, implementation of the operations is not strictly limited to a specific sequence, but the operations may be implemented in other sequences. Moreover, at least some operations in FIG. 2 and FIG. 5 may include a plurality of operations or a plurality of phases that are not necessarily implemented at the same time, but may be implemented at different time points. In addition, the operations or phases are not necessarily implemented in sequence, but may be implemented in turn or alternately with other operations or at least some operations or phases in other operations.

With reference to FIG. 6, the present disclosure further provides a radio device according to some embodiments. The radio device includes a chip structure 10 and an external storage (not shown in FIG. 6), at least two types of frame-configuration parameters are pre-stored in the external storage. Herein, the chip structure 10 may include a memory 101, a frame period control logic circuit 102, a frame configuration automatic acquisition logic circuit 103 and a radio wave generation logic circuit 104.

In some exemplary embodiments, the memory 101 is configured to store the at least two types of frame-configuration parameters called from the external storage before frame period signals are transmitted. The frame period control logic circuit 102 is configured to output a frame order. The frame configuration automatic acquisition logic circuit 103 is connected to the memory 101 and the frame period control logic circuit 102, and is configured to call corresponding frame-configuration parameters from the memory 101 in sequence according to the frame order. The radio wave generation logic circuit 104 is connected to the frame configuration automatic acquisition logic circuit 103 and is configured to generate the frame period signals according to the corresponding frame-configuration parameters. It is noted that the frame period signals include at least two frames of signals.

In the radio device as described above, the memory 101 can store the frame-configuration parameters called in advance before the frame period signals being transmitted, so that desired frame-configuration parameters can be directly called from the memory 101 subsequently, without need of acquiring externally, thereby saving time for calling the frame-configuration parameters. The frame period control logic circuit 102 can acquire and output in one time a configuration order for a plurality of frame-configuration parameters within a preset duration, so that the frame configuration automatic acquisition logic circuit 103 can call corresponding frame-configuration parameters in sequence from the memory 101 based on the configuration order. Then the radio wave generation logic circuit 104 can generate corresponding frame period signals based on the frame-configuration parameters, without need of performing configuration before generation of each of the frame period signals, thereby reducing time desired for generating the frame period signals based on the frame-configuration parameters. In other words, with one configuration, the radio device as described above can call corresponding frame-configuration parameters in sequence according to the frame order. For a piece of radio signals within the preset duration, the frame-configuration parameters corresponding to a plurality of frames can be called through only one configuration. It is not necessary to reconfigure the radio signals at the beginning of each frame in a case where two adjacent frames are different, thereby reducing time desired for configuring the signals to be transmitted and improving operation efficiency. Moreover, the radio device can be kept in an operation state during the configuration, thereby preventing the problem that the radio device cannot continuously operate during configuration.

It should be understood that the radio device as described above may be configured to transmit radio signals including but not limited to FMCW signals.

In some embodiments, the corresponding frame-configuration parameters include a first frame configuration parameter corresponding to a first frame of at least two adjacent frames in the frame period signals and a second frame configuration parameter corresponding to a second frame of the at least two adjacent frames, and the first frame configuration parameter and the second frame configuration parameter are different.

The radio device as described above can generate the frame period signals in which the first frame-configuration parameter corresponding to the first frame of at least two adjacent frames and the second frame configuration parameter corresponding to the second frame are different, and it is not necessary to reconfigure the radio signals at the beginning of each frame. In this way, time desired for configuring the signals to be transmitted can be reduced and operation efficiency can be improved. Moreover, the radio device can be kept in an operation state during the configuration, thereby preventing the problem that the radio device cannot continuously operate during configuration.

In some embodiments, the frame configuration automatic acquisition logic circuit 103 is further configured to periodically and circularly call the corresponding frame-configuration parameters from the memory 101 in sequence according to the frame order.

The radio device as described above can circularly call corresponding frame-configuration parameters in a certain period and in sequence according to a preset frame-configuration parameter order in the frame order with one configuration, thereby further reducing time desired for configuring the signals to be transmitted and improving operation efficiency.

In some embodiments, the frame period control logic circuit 102 is further configured to acquire application environment parameters and to output corresponding frame order according to intervals in which the application environment parameters fall.

The radio device as described above can determine the current application scenario according to the intervals in which the application environment parameters fall, and can adaptively select the frame order according to the current application scenario. In this way, the radio device can transmit testing signals more applicable to the current application scenario, thereby improving accuracy of operation.

It is noted that all or some modules of the radio device may be implemented through hardware. The modules may be embedded as hardware in or independent from a processor in a computer device to facilitate the processor calling and performing operations corresponding to the modules. It is further noted that division to the modules in the present disclosure is exemplary and is only a division in terms of logical functions. The modules may be divided in other ways in implementation.

Based on a similar inventive concept, the present disclosure further provides a radio signal according to some embodiments. The radio signal includes at least one frame period, and a frame period includes a configuration unit and at least two continuous frame units after the configuration unit.

In some exemplary embodiments, the configuration unit is configured to configure frame-configuration parameters for each of the at least two continuous frame units.

In the radio signal as described above, with the configuration unit, the frame-configuration parameters can be configured for the frame units within a preset duration in one time, without need of performing configuration before generation of each frame unit, thereby saving time for configuring the frame units.

The radio signal involved in the present disclosure is described in further detail with reference to FIG. 3.

With reference to FIG. 3, in the radio signal as shown in FIG. 3, the frame unit may include frame-configuration parameters including but not limited to frame type-I, frame type-II, frame type-III and the like. That is, the plurality of frame units within the present duration can be configured by one configuration unit in one time.

In some embodiments, among the frame units of the radio signal, frame-configuration parameters of at least two adjacent frame units differ. That is, each frame unit includes a plurality of signal units, and waveforms of the plurality of signal units are the same in a same frame unit.

In the radio signal as described above, the configuration unit can configure, in one time, frame units among which at least two adjacent frame units have different frame-configuration parameters within the preset duration, without need of performing configuration before generation of the frame units having different frame-configuration parameters, thereby saving time desired to configure the frame units.

It should be understood that the radio signal in the present disclosure may include but not limited to FMCW signals.

With reference to FIG. 7, the present disclosure further provides a signal transmission link according to some embodiments. The signal transmission link includes a feedback loop, a voltage-controlled oscillator and a transmission antenna connected in sequence. The signal transmission link further includes a generator of frequency-modulated continuous wave connected to the voltage-controlled oscillator and the feedback loop respectively. The generator of frequency-modulated continuous wave is configured to control, through the feedback loop, the voltage-controlled oscillator to transmit the radio signal according to any one of the above embodiments via the transmission antenna.

As shown in FIG. 7, a control voltage is generated by the feedback loop and provided to the voltage-controlled oscillator. Under the control of the input control voltage, the FMCW signals are generated by the voltage-controlled oscillator and then sent via the transmission antenna.

The signal transmission link as described above includes the generator of frequency-modulated continuous wave capable of transmitting the radio signals provided in any one of the preceding embodiments. The signal transmission link can achieve the technical effects that can be achieved by the radio signals, which is not described in detail herein.

Moreover, the signal transmission link as described above applies the voltage-controlled oscillator as a controlled component. The voltage-controlled oscillator has advantages such as stable frequency, high control sensitivity, wide frequency modulation range, a linear relationship between a frequency offset and the control voltage, applicability of integration and the like.

The present disclosure does not specifically define a type of the voltage-controlled oscillator. In some exemplary embodiments, the voltage-controlled oscillator may include but not limited to an inductance-capacitance (LC) voltage-controlled oscillator, a resistance-capacitance (RC) voltage-controlled oscillator, a crystal voltage-controlled oscillator or the like.

In some embodiments, the feedback loop, the voltage-controlled oscillator and the generator of frequency-modulated continuous wave may be integrated in a same chip structure.

In some embodiments, the transmission antenna may also be integrated in the chip structure.

In some embodiments, the present disclosure further provides a radio frequency device that may include a carrier and the signal transmission link provided in any one of the preceding embodiments. The signal transmission link may be fixedly disposed on the carrier to transmit and receive radio signals.

The carrier in the present disclosure may include but not limited to a printed circuit board (PCB). The present disclosure does not specifically define a particular form of the carrier.

In some embodiments, the present disclosure further provides a device including a device body and the radio frequency device provided in the preceding embodiments. The radio frequency device may be disposed on the device body, and a signal transmitted by the radio frequency device may be configured for target detection and/or communication.

In some exemplary embodiments, the signal transmitted by the radio frequency device may include but not limited to a FMCW signal.

It is noted that the radio frequency device may further include a signal reception link, a signal processing module and the like. In some embodiments, the radio frequency device may include an antenna-in-package (AiP) millimeter-wave radar chip. The AiP is able to provide excellent system performance. A plurality of antennas can be arranged on the package to achieve multiple types of array arrangement. An interconnection region between the antennas and the chip may be extremely short so that a signal can arrive the antennas by passing a shorter path. Moreover, a module size of the AiP is generally one tenth of that of a traditional module or even smaller. In this way, cost can be reduced and the use can be easier, a user does not have to perform design and development of antennas, and development period and cost of the products can be shortened, thereby reducing time cost before the product coming into the market and the cost.