CN115225112B - Radio frequency circuit, bluetooth scanning method and device and electronic equipment - Google Patents
Radio frequency circuit, bluetooth scanning method and device and electronic equipment Download PDFInfo
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- CN115225112B CN115225112B CN202210977268.5A CN202210977268A CN115225112B CN 115225112 B CN115225112 B CN 115225112B CN 202210977268 A CN202210977268 A CN 202210977268A CN 115225112 B CN115225112 B CN 115225112B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/401—Circuits for selecting or indicating operating mode
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The application discloses a radio frequency circuit, a Bluetooth scanning method, a Bluetooth scanning device and electronic equipment, and belongs to the technical field of communication. The radio frequency circuit includes: a Bluetooth modem; a wireless network modem; the first front-end access is respectively connected with the Bluetooth modem and the wireless network modem; the second front-end access is respectively connected with the Bluetooth modem and the wireless network modem; the radio frequency circuit comprises a first communication state and a second communication state; the first front-end access and the second front-end access are both communicated with the Bluetooth modem under the condition that the radio frequency circuit is in the first communication state; and under the condition that the radio frequency circuit is in a second communication state, the first front-end channel and the second front-end channel are communicated with the wireless network modem.
Description
Technical Field
The application belongs to the technical field of communication, and particularly relates to a radio frequency circuit, a Bluetooth scanning method, a Bluetooth scanning device and electronic equipment.
Background
Bluetooth is a near field wireless communication technology, operates in the 2.4GHz ISM frequency band, and is widely applied to various industries such as mobile terminals, internet of things, health care, intelligent home and the like. The prior art introduces bluetooth low energy (Bluetooth Low Energy, BLE), i.e. both classical bluetooth and bluetooth low energy modes coexist. The main characteristics of the low-power consumption Bluetooth include: low power consumption, fast connection, long distance. The Central device (Central) discovers data broadcast or replied to by the Peripheral device (Peripheral) by scanning. In each broadcast of the peripheral device, broadcast packets are transmitted sequentially on a plurality of channels, respectively.
In the prior art, the radio frequency link only supports listening on only one channel per BLE scan, resulting in a slower BLE scan speed.
Disclosure of Invention
An objective of the embodiments of the present application is to provide a radio frequency circuit, a bluetooth scanning method, a bluetooth scanning device, and an electronic device, which are used for solving the problem that the existing BLE scanning speed is slow.
In order to solve the technical problems, the application is realized as follows:
in a first aspect, embodiments of the present application provide a radio frequency circuit, including:
a Bluetooth modem;
a wireless network modem;
The first front-end access is respectively connected with the Bluetooth modem and the wireless network modem;
the second front-end access is respectively connected with the Bluetooth modem and the wireless network modem;
the radio frequency circuit comprises a first communication state and a second communication state; the first front-end access and the second front-end access are both communicated with the Bluetooth modem under the condition that the radio frequency circuit is in the first communication state; and under the condition that the radio frequency circuit is in a second communication state, the first front-end channel and the second front-end channel are communicated with the wireless network modem.
In a second aspect, an embodiment of the present application provides a bluetooth scanning method, which is applied to the radio frequency circuit, including:
detecting Bluetooth service in a Bluetooth service processing period;
when the Bluetooth service is detected to be the low-power-consumption Bluetooth scanning service, controlling a radio frequency circuit to be in a first communication state, wherein when the radio frequency circuit is in the first communication state, a first front-end passage and a second front-end passage in the radio frequency circuit are both communicated with a Bluetooth modem;
Monitoring a first channel through the first front-end channel to obtain a first Bluetooth signal, and monitoring a second channel through the second front-end channel to obtain a second Bluetooth signal;
and demodulating the first Bluetooth signal and the second Bluetooth signal to obtain low-power consumption Bluetooth broadcast data.
In a third aspect, an embodiment of the present application provides a bluetooth scanning device, including:
the detection module is used for detecting the Bluetooth service in the Bluetooth service processing period;
the first control module is used for controlling the radio frequency circuit to be in a first communication state under the condition that the Bluetooth service is detected to be the low-power Bluetooth scanning service, wherein when the radio frequency circuit is in the first communication state, a first front-end passage and a second front-end passage in the radio frequency circuit are both communicated with the Bluetooth modem;
the monitoring module is used for monitoring a first channel through the first front-end channel to obtain a first Bluetooth signal, and monitoring a second channel through the second front-end channel to obtain a second Bluetooth signal;
and the first processing module is used for demodulating the first Bluetooth signal and the second Bluetooth signal to obtain low-power-consumption Bluetooth broadcast data.
In a fourth aspect, an embodiment of the present application provides an electronic device, including a processor, a memory, and a computer program stored on the memory and executable on the processor, where the computer program is executed by the processor to implement the steps of the bluetooth scanning method according to the second aspect.
In a fifth aspect, embodiments of the present application provide a readable storage medium having stored thereon a program or instructions which when executed by a processor implement the steps of the method according to the second aspect.
In a sixth aspect, embodiments of the present application provide a chip, where the chip includes a processor and a communication interface, where the communication interface is coupled to the processor, and where the processor is configured to execute a program or instructions to implement a method according to the second aspect.
In the embodiment of the application, the radio frequency circuit is provided with a first front-end passage and a second front-end passage, the two front-end passages are connected with the Bluetooth modem and the wireless network modem, and the first front-end passage and the second front-end passage are communicated with the Bluetooth modem by controlling the radio frequency circuit to be in a first communication state; or, the radio frequency circuit is controlled to be in a second communication state, so that the first front end access and the second front end access are communicated with the wireless network modem, the time-sharing switching of the Bluetooth function and the wireless network function is realized, when the Bluetooth function is realized, the Bluetooth modem can monitor different channels through the two front end accesses respectively, the Bluetooth low-power-consumption broadcasting is monitored in a plurality of channels in parallel, the quick discovery capability of BLE is doubled, and the wireless network performance is not reduced.
Drawings
FIG. 1 is a schematic diagram of a radio frequency circuit according to an embodiment of the present application;
FIG. 2 is one of the workflow diagrams of the peripheral broadcast data and scan replies of the embodiments of the present application;
FIG. 3 is a second schematic diagram of a workflow of broadcasting data and scanning replies by a peripheral device according to an embodiment of the present application;
FIG. 4 is a second schematic diagram of a RF circuit according to an embodiment of the present application;
FIG. 5 is a third schematic diagram of the RF circuit according to the embodiment of the present application;
FIG. 6 is a fourth schematic diagram of a RF circuit according to an embodiment of the present application;
fig. 7a is a schematic flow chart of a bluetooth scanning method according to an embodiment of the present application;
FIG. 7b is a second flowchart of a Bluetooth scanning method according to an embodiment of the present application;
fig. 8 is a third flow chart of a bluetooth scanning method according to an embodiment of the present application;
fig. 9 is a schematic structural diagram of a bluetooth scanning device according to an embodiment of the present application;
FIG. 10 shows one of the schematic structural diagrams of the electronic device according to the embodiment of the present application;
fig. 11 shows a second schematic structural diagram of the electronic device according to the embodiment of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
The features of the terms "first", "second", and the like in the description and in the claims of this application may be used for descriptive or implicit inclusion of one or more such features. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.
As shown in fig. 1, an embodiment of the present application provides a radio frequency circuit, including:
a Bluetooth modem 1;
a wireless network modem 2;
a first front-end path 3 connected to the bluetooth modem 1 and the wireless network modem 2, respectively;
a second front-end path 4 connected to the bluetooth modem 1 and the wireless network modem 2, respectively;
the radio frequency circuit comprises a first communication state and a second communication state; the first front-end path 3 and the second front-end path 4 are both communicated with the bluetooth modem 1 when the radio frequency circuit is in the first communication state; the first front-end path 3 and the second front-end path 4 are both in communication with the wireless network modem 2, with the radio frequency circuit in a second communication state.
In this embodiment, the bluetooth modem 1 (bluetooth modem) and the wireless network modem 2 (Wireless Fidelity, wiFi) are connected to the first front-end path 3 and the second front-end path 4, respectively, i.e. the bluetooth modem 1 may be connected to the front-end antenna through two front-end paths (i.e. the first front-end path 3 and the second front-end path 4, and the wireless network modem 2 may also be connected to the front-end antenna through the two front-end paths).
In this embodiment, the radio frequency circuit has two front-end paths, namely a first front-end path and a second front-end path, and the two front-end paths are connected with the bluetooth modem and the wireless network modem, and the radio frequency circuit is in a first communication state or a second communication state by controlling the communication between the first front-end path 3 and the second front-end path 4 and the bluetooth modem 1 or the communication between the first front-end path 3 and the second front-end path 4 and the wireless network modem 2, so that when the radio frequency circuit is in the first communication state, the bluetooth function is realized, and channel monitoring is performed on broadcast data and/or scanning replies sent by peripheral equipment through double paths; and when the radio frequency circuit is in the second communication state, the wireless network function is realized, and the monitoring of the wireless network channel is carried out through double paths.
In this embodiment, by switching the connection state of the radio frequency circuit, the time-sharing switching of the bluetooth function and the wireless network function is realized, and when the bluetooth function is realized, the bluetooth modem 1 can respectively monitor different channels through two paths of front-end paths, so as to realize the concurrent monitoring of bluetooth low energy broadcasting in a plurality of channels, and double the rapid discovery capability of BLE, without reducing the wireless network performance.
Alternatively, devices that enable rapid discovery and connection of bluetooth low energy may be divided into a central device and a peripheral device. Wherein the peripheral device: usually a very small or simple low power device, for providing data and connected to a relatively more powerful central device, such as a bracelet. Center device: the central device, e.g. a smart phone or the like, is relatively powerful and is used for connecting other peripheral devices. The peripheral device broadcasts the data out in two ways: broadcast data (Advertising Data Payload) and scan replies (Scan Response Data Payload), each of which may contain up to 31 bytes. Broadcasting data is necessary here because the peripheral device needs to broadcast out constantly so that the central device knows its presence. The scan reply is optional and the central device may request the scan reply from the peripheral device, where some additional information for the device is contained, such as the name of the device.
The workflow of the peripheral device broadcasting data and scanning reply is shown in fig. 2, and the peripheral device may set a broadcasting interval in which the peripheral device retransmits its own broadcasting data. In most cases, the peripheral device broadcasts itself to let the central device discover itself and set up a BLE connection for more data exchange. In one broadcast, the peripheral device may sequentially transmit broadcast data on three channels 37, 38, 39, respectively, as shown in fig. 3. The scanning is a process that the central equipment monitors the peripheral broadcasting data packet and sends a scanning request, the central equipment can acquire the broadcasting data packet and the scanning reply packet of the peripheral equipment through scanning, and the central equipment can initiate a connection request for the scanned peripheral equipment, so that the peripheral equipment is connected and communicated. When the central device receives the desired broadcast information, discovery of the device is achieved.
In the device scanning process, the central device monitors a channel through a front-end channel of the radio frequency circuit to obtain broadcast data of the peripheral device. In the embodiment of the application, the Bluetooth modem in the radio frequency circuit can be connected with two paths of front-end paths, so that two paths of channels can be monitored simultaneously, broadcast data packets of the two paths of channels are obtained, the speed of scanning discovery is improved, and the quick discovery connection of equipment is realized.
Optionally, as shown in fig. 4, the first front-end path 3 includes: a first switching module 31 and a first antenna 32; one end of the first switching module 31 is connected to the bluetooth modem 1 and the wireless network modem 2, and the other end of the first switching module 31 is connected to the first antenna 32.
Optionally, the second front-end path 4 includes: a second switching module 41 and a second antenna 42; one end of the second switching module 41 is connected to the bluetooth modem 1 and the wireless network modem 2, and the other end of the second switching module 41 is connected to the second antenna 42.
In this embodiment, the first front-end path 3 and the second front-end path 4 each include a switching module and an antenna, so as to implement connection between the bluetooth modem 1 and the wireless network modem 2 and the antenna. The first switching module 31 is configured to connect the bluetooth modem 1 or the wireless network modem 2 to the first antenna 32 through switching, and the second switching module 41 is configured to connect the bluetooth modem 1 or the wireless network modem 2 to the second antenna 42 through switching.
In the working period of the bluetooth function, the bluetooth modem 1 may be connected with the first antenna 32 by controlling the first switching module 31, and the bluetooth modem 1 may be connected with the second antenna 42 by controlling the second switching module 41, so that the bluetooth modem 1 may use two paths of front-end paths to perform channel monitoring at the same time, thereby improving the scanning speed.
Optionally, as shown in fig. 4, the first switching module 31 or the second switching module 41 includes: a first switch 51 and a second switch 52; the first switch 51 has a first contact and a second contact, and the second switch 52 has a third contact, a fourth contact, and a fifth contact;
wherein a first end of the first switch 51 is connected to the wireless network modem 2, a first contact of a second end of the first switch 51 is connected to a third contact of the second switch 52, and a second contact of the second end of the first switch 51 is connected to a fourth contact of the second switch 52; the fifth contact of the second switch 52 is connected to the bluetooth modem 1.
It should be noted that the internal structures and the connection relationships of the structures of the first switching module 31 and the second switching module 41 may be the same, that is, the first switching module 31 and the second switching module 41 each include the first switch 51 and the second switch 52, as shown in fig. 4.
Optionally, the first switching module 31 or the second switching module 41 further includes:
a first amplifier provided on a connection line between the first contact and the third contact;
a second amplifier provided on a connection line between the second contact and the fourth contact;
and one end of the third switch is connected with the second contact, and the other end of the third switch is connected with the fourth contact.
Optionally, the first amplifier is a power amplifier of a transmit path, and the second amplifier is a power amplifier of a receive path.
It should be noted that the internal structures and the connection relationships of the structures of the first switching module 31 and the second switching module 41 may be the same, that is, the first switching module 31 and the second switching module 41 each include the first amplifier, the second amplifier and the third switch, as shown in fig. 4.
In this embodiment, the switching module may be configured by a plurality of switches, the first switch 51 may be a single pole double throw switch, the second switch 52 may be a single pole triple throw switch, and the third switch may be a single pole single throw switch. As shown in fig. 4, the first switching module 31 and the second switching module 41 may have the same structure. By switching the connection contacts of the first switch 51 and the second switch 52, communication between the bluetooth modem 1 and the first antenna 32 and/or the second antenna 42 is achieved, or communication between the wireless network modem 2 and the first antenna 32 and/or the second antenna 42 is achieved.
For example: when the bluetooth function is implemented, the fifth contact of the second switch 52 in the first switching module 31 and the second switching module 41 is controlled to be turned on, so that the bluetooth modem 1 can perform channel monitoring through two paths of front-end paths; when the wireless network function is implemented, the wireless network modem 2 can transmit signals through two front-end paths by controlling the first contact of the first switch 51 in the first switching module 31 and the second switching module 41 to be turned on and controlling the third contact of the second switch 52 to be turned on; alternatively, the wireless network modem 2 may receive signals through two front-end paths by controlling the second contact of the first switch 51 in the first switching module 31 and the second switching module 41 to be turned on, and controlling the fourth contact of the second switch 52 to be turned on.
As an alternative embodiment, as shown in fig. 5, the bluetooth modem 1 includes:
a first signal processing path 11 connected to the first front-end path 3;
a second signal processing path 12 connected to the second front-end path 4;
an analog-to-digital converter 13 connected to the first signal processing path 11 and the second signal processing path 12, respectively;
A codec 14 having one end connected to the analog-digital converter 13 and the other end connected to the medium access control MAC layer of the bluetooth modem 1;
and a clock signal source 15 having one end connected to the first signal processing path 11 and the other end connected to the second signal processing path 12.
Optionally, the first signal processing path 11 includes:
a first automatic gain controller 111 connected to the first front-end path 3;
a first mixer 112 connected to the first automatic gain controller 111;
a first filter 113 having one end connected to the first mixer 112 and the other end connected to the analog-digital converter 13;
a first oscillator 114 having one end connected to the first mixer 112 and the other end connected to the clock signal source 15.
Optionally, the second signal processing path 12 includes:
a second automatic gain controller 121 connected to the second front-end path 4;
a second mixer 122 connected to the second automatic gain controller 121;
a second filter 123 having one end connected to the second mixer 122 and the other end connected to the adc 13;
and a second oscillator 124 having one end connected to the second mixer 122 and the other end connected to the clock signal source 15.
In this embodiment, the bluetooth modem 1 may include two signal processing paths (i.e., the first signal processing path 11 and the second signal processing path 12) therein, so as to implement simultaneous processing of two signals. The first signal processing path 11 and the second signal processing path 12 may have the same structure, wherein,
the first agc 111 and/or the second agc 121 are agc amplifiers of the receiving channel, and can automatically adjust an amplification factor according to the intensity of an input rf signal (e.g., a signal monitored during scanning), so that an output rf signal can be substantially constant at a stable intensity.
The clock source 15 provides the system clock signal, providing a fundamental clock frequency to the overall system, and is the source of the PLL/LO.
The first oscillator 114 and/or the second oscillator 124 may multiply a clock signal to a radio frequency signal as a modulation signal source of the radio frequency signal.
The first mixer 112 and/or the second mixer 122 can spectrum shift the signal, down-convert the BT radio frequency signal to a baseband signal. The first mixer 112 and/or the second mixer 122 are shown in fig. 6. Wherein, the output signal time domain expression of the Mixer (Mixer) is:
y(t)＝x(t)*cos(t)
Where x (t) is the radio frequency signal input and cos (t) is the signal output by the oscillator (LO) to the mixer. Where x (t) is a modulated radio frequency signal, which can be further decomposed into x (t) =b (t) ×sin (t), where B (t) is a modulated bluetooth baseband signal. Thus y (t) =b (t) ×sin (t) ×cos (t), using fourier transform, the end result is: y (w) =1/2[X (w+wc) +x (w-wc) ], the high frequency of X (w+wc) can be filtered by using a low-pass filter (i.e. the first filter 113 and/or the second filter 123), only the baseband signal of X (w-wc) is left, and the inverse fourier transform is used to obtain B (t) in the time domain, so that the rf signal of BT can be transformed to obtain the baseband signal of BT by using a mixer and a low-pass filter.
The analog-to-digital converter 13 (ADC) converts the baseband analog signal into a digital signal recognizable by the codec; the codec 14 encodes and decodes the digital signal into a format prescribed by the protocol, and provides a digital signal source to the MAC layer. The MAC layer belongs to a sub-layer below the data link layer in the open system interconnection communication reference model (Open System Interconnection Reference Model, OSI). It defines how data frames are transmitted on the medium. In links sharing the same bandwidth, access to the connection medium is "first come first served". Physical addressing is defined herein, as is logical topology (the path of signals through a physical topology). Line control, error notification (not corrected), frame delivery order, and optional flow control are also implemented at this sub-layer.
In this embodiment, the processing of two paths of radio frequency signals can be simultaneously implemented in the bluetooth modem, and the two paths of radio frequency signals share ADC baseband processing, so that the ADC channel and the baseband processing bandwidth are increased, and the processing of combining signals of multiple channels is supported. The dual-channel ADC is used, and one ADC core is shared, so that the processing speed is improved, and baseband signals can be processed in parallel. Compared with the existing radio frequency time division mode (scanning and receiving is completed to one BT channel and then scanning and receiving the next BT channel), multiple BT channels can be received simultaneously in parallel, and the signal processing efficiency is improved.
It should be noted that in the embodiment of the present application, more front-end paths similar to the first front-end path and the second front-end path may be further added to the radio frequency circuit, so as to realize multipath channel monitoring when executing the bluetooth service, which is not described herein.
According to the embodiment of the application, the connection state of the radio frequency circuit can be switched, two paths of radio frequency connection of the Bluetooth modem and the antenna can be realized, or two paths of radio frequency connection of the wireless network modem and the antenna can be realized, the time-sharing switching of the Bluetooth function and the wireless network function can be realized, when the Bluetooth function is realized, the Bluetooth modem can monitor different channels respectively through two paths of front-end channels, the Bluetooth low-power-consumption broadcasting can be monitored in a plurality of channels in parallel, the BLE rapid discovery capability can be doubled, and the wireless network performance is not reduced.
As shown in fig. 7a, the embodiment of the present application further provides a bluetooth scanning method, which is applied to the radio frequency circuit, including:
step 701a, detecting a bluetooth service in a bluetooth service processing period;
step 702a, when the bluetooth service is detected to be a bluetooth low energy scanning service, controlling a radio frequency circuit to switch to a first communication state, wherein when the radio frequency circuit is in the first communication state, a first front-end channel and a second front-end channel in the radio frequency circuit are both communicated with a bluetooth modem;
step 703a, monitoring a first channel through the first front-end channel to obtain a first bluetooth signal, and monitoring a second channel through the second front-end channel to obtain a second bluetooth signal;
and step 704a, demodulating the first bluetooth signal and the second bluetooth signal to obtain bluetooth low energy broadcast data.
In this embodiment, the radio frequency circuit has two communication states, and when the first front-end path and the second front-end path are both communicated with the bluetooth modem, the radio frequency circuit is in the first communication state; and when the first front-end access and the second front-end access are both communicated with the wireless network modem, the radio frequency circuit is in a second communication state. And realizing the time-sharing multiplexing of the Bluetooth service and the wireless network service by switching the connection state of the radio frequency circuit. After the Bluetooth function of the electronic equipment is started, if the Bluetooth function enters a processing period of the Bluetooth service, whether the current Bluetooth service is a BLE scanning service or not is detected, if the current Bluetooth service is the BLE scanning service, the communication state of the radio frequency circuit is controlled to be communicated with a Bluetooth access, and even if the first front-end access and the second front-end access are communicated with the Bluetooth modem, the radio frequency circuit works in the first communication state.
And setting a corresponding monitoring channel for each front-end access respectively, so that the first front-end access monitors a first channel, the second front-end access monitors a second channel, and the first channel and the second channel are different channels. And by starting BLE multipath monitoring, bluetooth BLE signals of the peripheral equipment are received and transmitted to the Bluetooth modem to carry out modulation and demodulation processing, and BLE broadcast data packets are restored.
Optionally, the method further comprises: and under the condition that the Bluetooth service is detected to be other Bluetooth service except the low-power consumption Bluetooth scanning service, keeping the current connection state of the radio frequency circuit unchanged.
In this embodiment, if the bluetooth service is other bluetooth service than the bluetooth scanning service with low power consumption during bluetooth detection, the dual-channel monitoring is not required to be started, that is, the radio frequency circuit is not required to be controlled to perform state switching, so that the other bluetooth service is directly executed.
Taking the example of detecting that the bluetooth service is other bluetooth service except the bluetooth low energy scanning service, the bluetooth scanning method is shown in fig. 7b, and includes:
step 701b, detecting the Bluetooth service in the Bluetooth service processing period;
Step 702b, if it is detected that the bluetooth service is other bluetooth service except the bluetooth low energy scanning service, maintaining the current connection state of the radio frequency circuit unchanged.
Optionally, the method further comprises: and under the condition that the Bluetooth service processing period is ended, controlling the radio frequency circuit to be in a second communication state, wherein when the radio frequency circuit is in the second communication state, the first front-end access and the second front-end access of the radio frequency circuit are both communicated with the wireless network modem.
Optionally, if the BLE broadcast data packet is obtained by demodulation in the bluetooth service processing period, the step of monitoring the first channel through the first front-end channel and monitoring the second channel through the second front-end channel is continuously performed, if the BLE broadcast data packet is not finished by demodulation, the bluetooth service processing period is judged to be finished, if the bluetooth service processing period is finished, a wireless network processing period is entered, namely, a WiFi time is entered, a radio frequency front-end switch is switched to a WiFi channel, namely, the first front-end channel and the second front-end channel are both communicated with a wireless network modem, so that the radio frequency circuit works in a second communication state, and a WiFi service related work is performed. After the wireless network processing period is finished, the Bluetooth service processing period is entered, and the step of monitoring two channels through the double front-end channels is repeatedly executed.
In the embodiment of the application, the radio frequency module is connected with the front-end antenna in two paths, and the Bluetooth and wireless network are switched in a time-sharing manner through the switching device; the system enters BLE scanning period time, and software monitors two or three BLE channels through a Bluetooth modem; receiving Bluetooth signals from the front end paths of two or three antennas, transmitting the Bluetooth signals to a Bluetooth modem to complete modulation and demodulation and restore to corresponding effective BLE broadcast data packets; after the system enters the WiFi period time, the software switches the external antenna to be connected to a wireless network modem (WiFi modem) through a switching device, restores the WiFi hardware access connection and executes WiFi work.
The implementation process of the bluetooth scanning method is described below through a specific embodiment. As shown in fig. 8, includes:
1) Turning on the Bluetooth function, and entering step 2);
2) 2.4G WiFi and Bluetooth are multiplexed in a time-sharing way, and enter a Bluetooth period;
3) Step 5) is entered if the current service is BLE scanning service, otherwise step 4) is entered;
4) Executing other Bluetooth services, and completing the step 11);
5) Switching the radio frequency front-end switch to a Bluetooth channel, namely enabling the first front-end channel and the second front-end channel to be communicated with a Bluetooth modem, and entering a step 6);
6) Setting a monitoring channel (such as two of 37/38/39) for each link, wherein the channels monitored by each link are different from each other, and entering step 7);
7) Starting BLE multipath monitoring, and entering step 8);
8) Receiving a Bluetooth BLE signal from the peripheral device, transmitting the Bluetooth BLE signal to a Bluetooth modem (BT modem), and entering step 9);
9) The modem reverts to BLE broadcast data packet, enter step 10);
10 Judging whether the BLE scanning window is finished or not, re-entering the step 7 if the BLE scanning window is not finished, and entering the step 11 if the BLE scanning window is finished;
11 The Bluetooth service processing period is ended, a wireless network processing period is entered, namely WiFi time is entered, a radio frequency front-end switch is switched to a WiFi access, namely, the first front-end access and the second front-end access are communicated with a wireless network modem, and the step 12 is entered);
12 A WiFi period, executing WiFi operation, and entering step 13);
13 If the WiFi processing period is finished, entering the step 2), otherwise entering the step 12);
in the embodiment of the application, in a bluetooth service processing period, if a bluetooth service to be processed is a low-power-consumption bluetooth scanning service, the radio frequency circuit is controlled to switch to a first communication state, so that the first front-end access and the second front-end access are both communicated with the bluetooth modem, two channels of monitoring are simultaneously carried out through the two front-end accesses, the bluetooth low-power-consumption broadcasting is monitored in a plurality of channels concurrently, the quick discovery capability of BLE is doubled, and the wireless network performance is not reduced.
In the embodiment of the application, under the control of software logic, a hardware multiplexing radio frequency antenna path monitors a plurality of BLE channels in parallel in a mode of combining software and hardware so as to accelerate the BLE scanning speed. Because the BLE broadcast is respectively transmitted in three channels of 37/38/39 and is executed according to a fixed period, compared with the traditional system that only one path of software and hardware monitors the BLE broadcast, each path of front-end path is added with a received signal, the BLE scanning speed can be accelerated by one time, and the BLE scanning speed can be improved by 1-2 times at maximum, so that the user experience is improved, and the non-perception discovery and connection are realized.
It should be noted that, in the bluetooth scanning method provided in the embodiment of the present application, the execution body may be a bluetooth scanning device, or a control module for the bluetooth scanning method in the bluetooth scanning device. In this embodiment, a bluetooth scanning device is used as an example to execute a bluetooth scanning method, which illustrates a bluetooth scanning device provided in this embodiment of the application.
As shown in fig. 9, the embodiment of the present application further provides a bluetooth scanning device 900, including:
a detection module 910, configured to detect a bluetooth service in a bluetooth service processing period;
the first control module 920 is configured to control the radio frequency circuit to be in a first connection state when the bluetooth service is detected to be a bluetooth low energy scanning service, where when the radio frequency circuit is in the first connection state, both a first front-end path and a second front-end path in the radio frequency circuit are connected with the bluetooth modem;
The monitoring module 930 is configured to monitor a first channel through the first front-end path to obtain a first bluetooth signal, and monitor a second channel through the second front-end path to obtain a second bluetooth signal;
the first processing module 940 is configured to demodulate the first bluetooth signal and the second bluetooth signal to obtain bluetooth low energy broadcast data.
Optionally, the apparatus further comprises:
and the second processing module is used for keeping the current connection state of the radio frequency circuit unchanged under the condition that the Bluetooth service is detected to be other Bluetooth service except the low-power consumption Bluetooth scanning service.
Optionally, the apparatus further comprises:
and the second control module is used for controlling the radio frequency circuit to be in a second communication state under the condition that the Bluetooth service processing period is ended, wherein when the radio frequency circuit is in the second communication state, the first front-end access and the second front-end access of the radio frequency circuit are both communicated with the wireless network modem.
The bluetooth scanning device in the embodiment of the application may be a device, or may be a component, an integrated circuit, or a chip in a terminal. The device may be a mobile electronic device or a non-mobile electronic device. By way of example, the mobile electronic device may be a cell phone, tablet computer, notebook computer, palm computer, vehicle-mounted electronic device, wearable device, ultra-mobile personal computer (ultra-mobile personal computer, UMPC), netbook or personal digital assistant (personal digital assistant, PDA), etc., and the non-mobile electronic device may be a server, network attached storage (Network Attached Storage, NAS), personal computer (personal computer, PC), television (TV), teller machine or self-service machine, etc., and the embodiments of the present application are not limited in particular.
The bluetooth scanning device in the embodiment of the present application may be a device with an operating system. The operating system may be an Android operating system, an ios operating system, or other possible operating systems, which are not specifically limited in the embodiments of the present application.
The bluetooth scanning device provided in this embodiment of the present application can implement each process implemented by the bluetooth scanning device in the method embodiments of fig. 7a to fig. 8, and in order to avoid repetition, a detailed description is omitted here.
Optionally, as shown in fig. 10, an embodiment of the present application further provides an electronic device 1000, where the electronic device includes the radio frequency circuit, and the electronic device further includes: the processor 1001, the memory 1002, and a program or an instruction stored in the memory 1002 and capable of running on the processor 1001, where the program or the instruction implements each process of the above-mentioned bluetooth scanning method embodiment when executed by the processor 1001, and the same technical effects can be achieved, and for avoiding repetition, a description is omitted herein.
It should be noted that, the electronic device in the embodiment of the present application includes the mobile electronic device and the non-mobile electronic device described above.
Fig. 11 is a schematic diagram of a hardware structure of an electronic device, which includes the radio frequency circuit, for implementing an embodiment of the present application.
The electronic device 1100 includes, but is not limited to: radio frequency unit 1101, network module 1102, audio output unit 1103, input unit 1104, sensor 1105, display unit 1106, user input unit 1107, interface unit 1108, memory 1109, and processor 1110.
Those skilled in the art will appreciate that the electronic device 1100 may further include a power source (e.g., a battery) for powering the various components, which may be logically connected to the processor 1110 by a power management system, such as to perform functions such as managing charging, discharging, and power consumption by the power management system. The electronic device structure shown in fig. 11 does not constitute a limitation of the electronic device, and the electronic device may include more or less components than illustrated, or may combine some components, or may be arranged in different components, which are not described in detail herein.
The processor 1110 is configured to detect bluetooth traffic during a bluetooth traffic processing period;
when the Bluetooth service is detected to be the low-power-consumption Bluetooth scanning service, controlling a radio frequency circuit to be in a first communication state, wherein when the radio frequency circuit is in the first communication state, a first front-end passage and a second front-end passage in the radio frequency circuit are both communicated with a Bluetooth modem;
The radio frequency unit 1101 is configured to: monitoring a first channel through the first front-end channel to obtain a first Bluetooth signal, and monitoring a second channel through the second front-end channel to obtain a second Bluetooth signal;
the processor 1110 is further configured to: and demodulating the first Bluetooth signal and the second Bluetooth signal to obtain low-power consumption Bluetooth broadcast data.
Optionally, the processor 1110 is further configured to: and under the condition that the Bluetooth service is detected to be other Bluetooth service except the low-power consumption Bluetooth scanning service, keeping the current connection state of the radio frequency circuit unchanged.
Optionally, the processor 1110 is further configured to: and under the condition that the Bluetooth service processing period is ended, controlling the radio frequency circuit to be in a second communication state, wherein when the radio frequency circuit is in the second communication state, the first front-end access and the second front-end access of the radio frequency circuit are both communicated with the wireless network modem.
In the embodiment of the application, in a bluetooth service processing period, if a bluetooth service to be processed is a low-power-consumption bluetooth scanning service, the first front-end access and the second front-end access are controlled to be communicated with the bluetooth modem, so that two channels of monitoring is simultaneously carried out through the two front-end accesses, the bluetooth low-power-consumption broadcasting is monitored in a plurality of channels concurrently, the quick discovery capability of BLE is doubled, and the wireless network performance is not reduced.
It should be appreciated that in embodiments of the present application, the input unit 1104 may include a graphics processor (Graphics Processing Unit, GPU) 11041 and a microphone 11042, the graphics processor 11041 processing image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The display unit 1106 may include a display panel 11061, and the display panel 11061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 1107 includes a touch panel 11071 and other input devices 11072. The touch panel 11071 is also referred to as a touch screen. The touch panel 11071 may include two parts, a touch detection device and a touch controller. Other input devices 11072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and so forth, which are not described in detail herein. Memory 1109 may be used to store software programs as well as various data including, but not limited to, application programs and an operating system. The processor 1110 may integrate an application processor that primarily processes operating systems, user interfaces, applications, etc., with a modem processor that primarily processes wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 1110.
The embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or the instruction is executed by a processor, the program or the instruction realizes each process of the above embodiment of the bluetooth scanning method, and the same technical effects can be achieved, so that repetition is avoided, and no further description is given here.
Wherein the processor is a processor in the electronic device described in the above embodiment. The readable storage medium includes a computer readable storage medium such as a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk or an optical disk, and the like.
The embodiment of the application further provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled with the processor, the processor is used for running a program or an instruction, implementing each process of the above bluetooth scanning method embodiment, and achieving the same technical effect, so as to avoid repetition, and no redundant description is provided herein.
It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, chip systems, or system-on-chip chips, etc.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk), including several instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method described in the embodiments of the present application.
The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those of ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are also within the protection of the present application.
Claims (13)
1. A radio frequency circuit, comprising:
a Bluetooth modem;
a wireless network modem; the wireless network modem is a WiFi modem;
the first front-end access is respectively connected with the Bluetooth modem and the wireless network modem;
the second front-end access is respectively connected with the Bluetooth modem and the wireless network modem;
the radio frequency circuit comprises a first communication state and a second communication state; the first front-end access and the second front-end access are both communicated with the Bluetooth modem under the condition that the radio frequency circuit is in the first communication state; and under the condition that the radio frequency circuit is in a second communication state, the first front-end channel and the second front-end channel are communicated with the wireless network modem.
2. The radio frequency circuit of claim 1, wherein the first front-end path comprises: a first switching module and a first antenna;
one end of the first switching module is connected with the Bluetooth modem and the wireless network modem respectively, and the other end of the first switching module is connected with the first antenna;
The second front-end path includes: the second switching module and the second antenna;
one end of the second switching module is connected with the Bluetooth modem and the wireless network modem respectively, and the other end of the second switching module is connected with the second antenna.
3. The radio frequency circuit of claim 2, wherein the first switching module or the second switching module comprises:
a first switch and a second switch; the first switch has a first contact and a second contact, the second switch has a third contact, a fourth contact, and a fifth contact;
the first end of the first switch is connected with the wireless network modem, the first contact of the second end of the first switch is connected with the third contact of the second switch, and the second contact of the second end of the first switch is connected with the fourth contact of the second switch;
the fifth contact of the second switch is connected with the Bluetooth modem.
4. The radio frequency circuit of claim 3, wherein the first switching module or the second switching module further comprises:
a first amplifier provided on a connection line between the first contact and the third contact;
A second amplifier provided on a connection line between the second contact and the fourth contact;
and one end of the third switch is connected with the second contact, and the other end of the third switch is connected with the fourth contact.
5. The radio frequency circuit of claim 1, wherein the bluetooth modem comprises:
a first signal processing path connected to the first front-end path;
a second signal processing path connected to the second front-end path;
an analog-to-digital converter connected to the first signal processing path and the second signal processing path, respectively;
one end of the coder-decoder is connected with the analog-digital converter, and the other end of the coder-decoder is connected with the Media Access Control (MAC) layer of the Bluetooth modem;
and one end of the clock signal source is connected with the first signal processing path, and the other end of the clock signal source is connected with the second signal processing path.
6. The radio frequency circuit of claim 5, wherein the first signal processing path comprises:
the first automatic gain controller is connected with the first front-end channel;
the first mixer is connected with the first automatic gain controller;
a first filter, one end of which is connected with the first mixer, and the other end of which is connected with the analog-digital converter;
And one end of the first oscillator is connected with the first mixer, and the other end of the first oscillator is connected with the clock signal source.
7. The radio frequency circuit of claim 5, wherein the second signal processing path comprises:
the second automatic gain controller is connected with the second front-end channel;
the second mixer is connected with the second automatic gain controller;
one end of the second filter is connected with the second mixer, and the other end of the second filter is connected with the analog-digital converter;
and one end of the second oscillator is connected with the second mixer, and the other end of the second oscillator is connected with the clock signal source.
8. A bluetooth scanning method, comprising:
detecting Bluetooth service in a Bluetooth service processing period;
controlling a radio frequency circuit to be in a first connection state under the condition that the Bluetooth service is detected to be a low-power Bluetooth scanning service, wherein the radio frequency circuit is the radio frequency circuit of any one of claims 1-7;
monitoring a first channel through a first front-end channel in the radio frequency circuit to obtain a first Bluetooth signal, and monitoring a second channel through a second front-end channel in the radio frequency circuit to obtain a second Bluetooth signal;
And demodulating the first Bluetooth signal and the second Bluetooth signal to obtain low-power consumption Bluetooth broadcast data.
9. The method of claim 8, wherein the method further comprises:
and under the condition that the Bluetooth service is detected to be other Bluetooth service except the low-power consumption Bluetooth scanning service, keeping the current connection state of the radio frequency circuit unchanged.
10. The method according to claim 8 or 9, characterized in that the method further comprises:
and under the condition that the Bluetooth service processing period is ended, controlling the radio frequency circuit to be in a second communication state, wherein when the radio frequency circuit is in the second communication state, the first front-end access and the second front-end access in the radio frequency circuit are both communicated with the wireless network modem.
11. A bluetooth scanning device comprising the radio frequency circuit of any of claims 1-7, the device further comprising:
the detection module is used for detecting the Bluetooth service in the Bluetooth service processing period;
the first control module is used for controlling the radio frequency circuit to be in a first communication state under the condition that the Bluetooth service is detected to be a low-power Bluetooth scanning service;
The monitoring module is used for monitoring a first channel through a first front-end channel in the radio frequency circuit to obtain a first Bluetooth signal, and monitoring a second channel through a second front-end channel in the radio frequency circuit to obtain a second Bluetooth signal;
and the first processing module is used for demodulating the first Bluetooth signal and the second Bluetooth signal to obtain low-power-consumption Bluetooth broadcast data.
12. An electronic device comprising a processor, a memory and a computer program stored on the memory and executable on the processor, which when executed by the processor performs the steps of the bluetooth scanning method according to any of claims 8 to 10.
13. A readable storage medium, characterized in that the readable storage medium has stored thereon a program or instructions which, when executed by a processor, implement the steps of the bluetooth scanning method according to any of claims 8-10.
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