CN113923640B - 2.4G multimode communication chip and communication method thereof - Google Patents
2.4G multimode communication chip and communication method thereof Download PDFInfo
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- CN113923640B CN113923640B CN202111279389.4A CN202111279389A CN113923640B CN 113923640 B CN113923640 B CN 113923640B CN 202111279389 A CN202111279389 A CN 202111279389A CN 113923640 B CN113923640 B CN 113923640B
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- 238000004891 communication Methods 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000012545 processing Methods 0.000 claims abstract description 51
- 238000005070 sampling Methods 0.000 claims abstract description 27
- 238000005516 engineering process Methods 0.000 claims description 10
- 230000001360 synchronised effect Effects 0.000 claims description 8
- 239000000284 extract Substances 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- HJVCHYDYCYBBQX-HLTLHRPFSA-N (2s,3s,4e,6e,8s,9s)-3-amino-9-methoxy-2,6,8-trimethyl-10-phenyldeca-4,6-dienoic acid Chemical compound OC(=O)[C@@H](C)[C@@H](N)/C=C/C(/C)=C/[C@H](C)[C@@H](OC)CC1=CC=CC=C1 HJVCHYDYCYBBQX-HLTLHRPFSA-N 0.000 description 1
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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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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/535—Allocation or scheduling criteria for wireless resources based on resource usage policies
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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
Abstract
The embodiment of the invention discloses a 2.4G multimode communication chip and a communication method thereof, wherein the chip comprises: the system comprises a baseband processing module, a modem module, a radio frequency module and a clock configuration module; the baseband processing module comprises a BLE baseband processing module, a BT baseband processing module, a 2.4G baseband processing module and a scheduler; the modem module comprises a data buffer module, a modulator, a demodulator, a synchronizer and a sampling module; the radio frequency module comprises a radio frequency transmitting module, a radio frequency receiving module, an analog-to-digital converter and a digital-to-analog converter; the clock configuration module comprises a first clock and a second clock; the clock configuration module is coupled to the scheduler and to the modulator, the demodulator and the synchronizer. The embodiment of the invention can realize the ultra-low delay of 2.4G products on one hand and enable single chip to support Bluetooth audio and 2.4G low-delay audio coexistence application on the other hand.
Description
Technical Field
The invention relates to the technical field of Bluetooth communication, in particular to a 2.4G multimode communication chip and a communication method thereof.
Background
In recent years, bluetooth-based audio applications have been very widespread, such as bluetooth headsets, bluetooth speakers, TWS headsets, etc. However, according to the Bluetooth audio product based on the classical Bluetooth technology, the audio delay is too long (usually >100 ms), even if the delay is optimized by sacrificing Bluetooth stability, distance and other methods, the delay is larger than 50ms, and the delay performance is dependent on a Bluetooth transmitting end, so that the experience is poor: for example, the delay of matching different mobile phone brands is unstable, and problems such as jamming can exist. Therefore, the requirement of users on low delay can not be met, and the method is especially applied to products with higher delay requirements such as electronic contests and wireless sound cards. Some manufacturers customize a proprietary 2.4G protocol on a software level based on a classical bluetooth chip architecture, and push out 2.4G dongle and 2.4G earphone products, so that delay and stability problems can be improved, but the method is limited by the basic architecture design of a bluetooth chip, and cannot be extremely achieved in the aspect of delay. Meanwhile, in product application, there is also a demand for coexistence of bluetooth audio and low-delay audio, such as electronic contest earphone, sound card and other products capable of supporting low-delay games and bluetooth music, and the products of the private 2.4G protocol are customized in software, but the bandwidth is limited, so that the requirements of clients cannot be met, and some products finally adopt two communication chips to make scheme design, so that the cost is high.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides a 2.4G multimode communication chip which can provide a low-cost high-bandwidth low-delay 2.4G multimode communication chip.
The invention also provides a communication method based on the 2.4G multimode communication chip.
A 2.4G multimode communication chip according to an embodiment of the first aspect of the invention comprises: the system comprises a baseband processing module, a modem module, a radio frequency module and a clock configuration module; the baseband processing module comprises a BLE baseband processing module, a BT baseband processing module, a 2.4G baseband processing module and a scheduler; the modem module comprises a data buffer module, a modulator, a demodulator, a synchronizer and a sampling module; the radio frequency module comprises a radio frequency transmitting module, a radio frequency receiving module, an analog-to-digital converter and a digital-to-analog converter; the clock configuration module comprises a first clock and a second clock; the clock configuration module is coupled to the scheduler and to the modulator, the demodulator and the synchronizer.
The 2.4G multimode communication chip provided by the embodiment of the invention has at least the following beneficial effects: according to the embodiment of the invention, the 2.4G baseband processing module and the clock configuration module are added, so that the bandwidth of 2.4G up to 4M/6Mbps can be realized at low cost, on one hand, the ultra-low delay of 2.4G products can be realized, and on the other hand, the single chip can support Bluetooth audio and 2.4G low-delay audio coexistence application; meanwhile, due to the private architecture design of the 2.4G baseband processing module, a time window for communication transceiving is not limited by BT and BLE protocols, and the communication time slot can be flexibly configured according to actual product requirements, so that lower transmission delay can be achieved, and wireless multi-connection audio application can be better supported.
According to some embodiments of the invention, the clock configuration module comprises a selector, a gating control end of the selector is connected with the scheduler, a first input end of the selector is connected with a first clock signal, a second input end of the selector is connected with a second clock signal, and an output end of the selector is connected with the modulator, the demodulator and the synchronizer.
According to some embodiments of the invention, the second clock is a 2-fold frequency clock of the first clock.
According to some embodiments of the invention, the sampling module further comprises a downsampling module and an upsampling module.
According to a second aspect of the present invention, a 2.4G multimode communication chip-based communication method is provided for the 2.4G multimode communication chip according to any one of the first aspect of the present invention, comprising the steps of: when receiving a BT or BLE data packet, a scheduler configures a modulator, a demodulator and a synchronizer to work at a first clock through clock control signals, and informs the modulator and the demodulator of the type of the data packet through a received data type signal; when receiving 2.4G data packets, the scheduler configures the modulator, the demodulator and the synchronizer to operate on a second clock through clock control signals, wherein the second clock is a frequency-2 multiplied clock of the first clock, and the types of the modulator and the demodulator data packets are notified through received data type signals.
The communication method based on the 2.4G multimode communication chip has at least the following beneficial effects: the embodiment of the invention enables the modulator, the demodulator and the synchronizer to work in the standard BT and BLE modes and in the private 2.4G mode by configuring the modulator, the demodulator and the synchronizer to work in the first clock or the second clock through the scheduler, and enables the modulator, the demodulator and the synchronizer to work in the 2.4G mode on the 2M baud rate, thereby providing the bandwidth of 4M/6 Mbps.
According to some embodiments of the invention, when receiving a BT packet, a BLE packet or a 2.4G packet, the method further comprises: the radio frequency receiving module receives a wireless signal through an antenna, demodulates the signal into an analog baseband signal, and converts the analog baseband signal into a digital baseband signal through an analog-to-digital converter; the sampling module performs down-sampling processing on the digital baseband signal and sends the processed baseband signal to the synchronizer and the demodulator; the synchronizer carries out synchronous processing on the processed baseband signals and transmits effective information and synchronous information of data frames to the demodulator; the demodulator demodulates the digital baseband signal by using a corresponding demodulation technology according to the information provided by the synchronizer and according to the data type signal provided by the scheduler, extracts an original data packet and transmits the effective data packet to the data caching module; the data caching module receives and caches the demodulated data and then sends the demodulated data to the scheduler; the dispatcher sends the data packet to the corresponding baseband processing module according to the type of the data packet received from the data caching module; and each baseband processing module unpacks the data packet according to the protocol standard.
According to a third aspect of the present invention, a 2.4G multimode communication chip-based communication method is provided for the 2.4G multimode communication chip according to any one of the first aspect of the present invention, comprising the steps of: when sending BT or BLE data packets, a scheduler configures a modulator, a demodulator and a synchronizer to work at a first clock through clock control signals, and informs the modulator and the demodulator of the types of the data packets through sending data type signals; when transmitting 2.4G data packets, the scheduler configures the modulator, the demodulator and the synchronizer to operate on a second clock by a clock control signal, the second clock being a 2-times frequency of the first clock, and signals the type of the modulator and the demodulator data packets by transmitting a data type signal.
The communication method based on the 2.4G multimode communication chip has at least the following beneficial effects: the embodiment of the invention enables the modulator, the demodulator and the synchronizer to work in the standard BT and BLE modes and in the private 2.4G mode by configuring the modulator, the demodulator and the synchronizer to work in the first clock or the second clock through the scheduler, and enables the modulator, the demodulator and the synchronizer to work in the 2.4G mode on the 2M baud rate, thereby providing the bandwidth of 4M/6 Mbps.
According to some embodiments of the invention, when sending BT data, BLE data packets or 2.4G data packets, the method further comprises: the baseband processing module receives the data packet sent by the upper protocol stack, carries out the baseband processing module layer packet according to the protocol standard, and sends the data packet to the dispatcher after the packet is formed; after receiving the data packet, the scheduler sends the data packet to a data caching module according to the priority and the scheduling policy; the data buffer module sends the data packet to a modulator according to a first-in first-out strategy; the modulator modulates the baseband signal of the data packet by using a corresponding modulation technology according to the transmitted data type signal provided by the scheduler, and transmits the modulated data to a sampling module; the sampling module performs up-sampling on the received data and then sends the up-sampled data to the digital-to-analog converter; the digital-to-analog converter converts the received data into analog signals, and the analog baseband signals are subjected to high-frequency modulation processing by the radio frequency transmission module and then transmitted to the antenna to be transmitted.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
fig. 1 is a block diagram schematically illustrating a 2.4G multimode communication chip according to an embodiment of the invention.
Fig. 2 is a timing diagram of a packet transceiver of a 2.4G multimode communication chip according to an embodiment of the invention.
Fig. 3 is a block diagram schematically illustrating a 2.4G multimode communication chip according to another embodiment of the invention.
Fig. 4 is a flow chart of a receiving end communication method according to an embodiment of the invention.
Fig. 5 is a flow chart of a transmitting end communication method according to an embodiment of the present invention.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, a plurality means one or more, and a plurality means two or more, and it is understood that greater than, less than, exceeding, etc. does not include the present number, and it is understood that greater than, less than, within, etc. include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
BB: baseband: baseband processing module
Modem: modem
RF: radio frequency module
CLK: clock (clock)
CLK2X: 2-frequency multiplication clock
Demodulators: demodulator with a plurality of filters
Modulator: modulator
GFSK/DQPSK/8PSK: gauss shift keying/differential quadrature shift keying/8-phase shift keying
SYNC: synchronizer
Scheduler, which is responsible for scheduling data packet transmission and reception and controlling corresponding transmission and reception paths.
Referring to fig. 1, an embodiment of the present invention provides a 2.4G multimode communication chip, including a baseband processing module, a modem module, a radio frequency module, and a clock configuration module.
The baseband processing module comprises a BLE baseband processing module, a BT baseband processing module, a 2.4G baseband processing module and a scheduler.
The standard bluetooth (BT & BLE) implementation scheme is: the RF front-end (TX/RX, ADDA) supports a 1M/2M baud rate; BT (classical bluetooth) supports 1M baud rate, and GFSK/4-DQPSK/8 PSK modem techniques, providing a data bandwidth of 1M/2M/3 Mbps; BLE supports a 1M/2M baud rate, and GFSK modem technology, thereby providing a data bandwidth of 1M/2 Mbps; BT BB communication slots are based on slot of 625 us; BLE BB has such a strict rule for the frame space (frame space) of the received and transmitted packet, such as t_ifs, t_mafs, t_mss; these provisions ensure compatibility between different bluetooth devices, but at the same time make flexibility and efficiency in terms of time slot division and bandwidth usage inefficient.
The 2.4G private baseband processing module is added in the embodiment, so that the communication time slot and the frame interval can be defined according to the performance of the radio frequency circuit, the bandwidth is fully utilized, and the delay is reduced. In addition, the method also enables BT, BLE and 2.4G to coexist, so that the product requirement of Bluetooth and 2.4G low-delay coexistence is met.
The modem module comprises a data buffer module, a modulator, a demodulator, a synchronizer and a sampling module.
The radio frequency module comprises a radio frequency transmitting module, a radio frequency receiving module, an analog-to-digital converter and a digital-to-analog converter.
The clock configuration module comprises a first clock and a second clock; the clock configuration module is connected with the scheduler and with the modulator, the demodulator and the synchronizer. The second clock is a 2-multiple clock of the first clock. In this embodiment, the modem is enabled to operate at a 2 Mbaud rate by providing an additional CLK2X clock, thereby providing a higher bandwidth.
In some embodiments, the clock configuration module includes a selector, a gating control terminal of the selector is connected to the scheduler, a first input terminal is connected to the first clock signal, a second input terminal is connected to the second clock signal, and an output terminal is connected to the modulator, the demodulator, and the synchronizer.
According to some embodiments of the invention, the sampling module further comprises a downsampling module and an upsampling module.
Referring to fig. 2, fig. 2 is a timing diagram illustrating an exemplary transceiver packet according to the present invention. Due to the high-bandwidth characteristic of the 2.4G and the BB transmission time sequence of the private optimization, the 2.4G equipment can perfectly utilize the idle time slot of the standard Bluetooth, thereby meeting the coexistence requirement of BT audio and 2.4G low-delay audio.
Referring to fig. 3 and fig. 4, the embodiment of the invention further provides a communication method based on a 2.4G multimode communication chip, which is used for a receiving end, and includes the following steps:
when receiving a BT or BLE data packet, the scheduler configures the modulator, the demodulator and the synchronizer to work at a first clock through clock control signals, and informs the modulator and the demodulator of the Type of the data packet through receiving a data Type signal R_Type; this causes the modulator, demodulator and synchronizer modules to operate in standard BT and BLE modes.
When receiving the 2.4G data packet, the scheduler configures the modulator, the demodulator and the synchronizer to operate at a second clock (2 times frequency clock) through the clock control signal, and informs the modulator and the demodulator of the Type of the data packet through the received data Type signal R_Type. This allows the Modulator, demodulator and synchronizer modules to operate in a private 2.4G mode, so that the 4-DQPSK/8PSK modem (Modulator & Demodulator) and the SYNC module can operate at a 2M baud rate, providing a bandwidth of 4M/6 Mbps.
When receiving the BT data packet, the BLE data packet, or the 2.4G data packet, the method of this embodiment further includes: the radio frequency receiving module receives a wireless signal through an antenna, demodulates the signal into an analog baseband signal, and converts the analog baseband signal into a digital baseband signal through an analog-to-digital converter; the sampling module performs down-sampling processing on the digital baseband signal and sends the processed baseband signal to the synchronizer and the demodulator; the synchronizer carries out synchronous processing on the processed baseband signals and transmits the effective information and the synchronous information of the data frames to the demodulator; the demodulator demodulates the digital baseband signal by using a corresponding demodulation technology (GFSK/pi/4-DQPSK/8 PSK) according to the information provided by the synchronizer and according to the data Type signal (R_Type) provided by the scheduler, extracts an original data packet, and transmits the effective data packet to the data buffer module; the data caching module receives and caches the demodulated data and then sends the demodulated data to the scheduler; the dispatcher sends the data packet to the corresponding baseband processing module according to the type of the data packet received from the data caching module; and each baseband processing module unpacks the data packet according to the protocol standard.
Referring to fig. 3 and 5, the embodiment of the invention further provides a communication method based on a 2.4G multimode communication chip, which is used for a transmitting end, and includes the following steps:
when sending BT or BLE data packets, the scheduler configures the modulator, the demodulator and the synchronizer to work at a first clock through clock control signals, and informs the modulator and the demodulator of the types of the data packets through sending data Type signals T_Type; this causes the modulator, demodulator and synchronizer modules to operate in standard BT and BLE modes.
When transmitting the 2.4G data packet, the scheduler configures the modulator, the demodulator and the synchronizer to operate at a second clock (2 times the frequency clock) through the clock control signal, and informs the modulator and the demodulator of the Type of the data packet through transmitting the data Type signal T_Type. This allows the Modulator, demodulator and synchronizer modules to operate in a private 2.4G mode, so that the 4-DQPSK/8PSK modem (Modulator & Demodulator) and the SYNC module can operate at a 2M baud rate, providing a bandwidth of 4M/6 Mbps.
When sending BT data, BLE data packets or 2.4G data packets, the method of this embodiment further includes: the baseband processing module receives the data packet sent by the upper protocol stack, carries out the baseband processing module layer packet according to the protocol standard, and sends the data packet to the dispatcher after the packet is formed; after receiving the data packet, the scheduler sends the data packet to a data caching module according to the priority and the scheduling policy; the data buffer module sends the data packet to the modulator according to a first-in first-out strategy; the modulator modulates the baseband signal of the data packet by using a corresponding modulation technology (GFSK/pi/4-DQPSK/8 PSK) according to a transmission data Type signal (T_Type) provided by the scheduler, and sends the modulated data to the sampling module; the sampling module performs up-sampling on the received data and then sends the up-sampled data to the digital-to-analog converter; the digital-to-analog converter converts the received data into analog signals, and the analog baseband signals are subjected to high-frequency modulation processing by the radio frequency transmitting module and then transmitted to the antenna to be transmitted.
Although specific embodiments are described herein, those of ordinary skill in the art will recognize that many other modifications or alternative embodiments are also within the scope of the present disclosure. For example, any of the functions and/or processing capabilities described in connection with a particular device or component may be performed by any other device or component. In addition, while various exemplary implementations and architectures have been described in terms of embodiments of the present disclosure, those of ordinary skill in the art will recognize that many other modifications to the exemplary implementations and architectures described herein are also within the scope of the present disclosure.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present invention.
Claims (5)
1. A communication method based on a 2.4G multimode communication chip, comprising the steps of:
when receiving a BT or BLE data packet, a scheduler configures a modulator, a demodulator and a synchronizer to work at a first clock through clock control signals, and informs the modulator and the demodulator of the type of the data packet through a received data type signal;
when receiving 2.4G data packets, the scheduler configures the modulator, the demodulator and the synchronizer to work on a second clock through clock control signals, wherein the second clock is a frequency-2 multiplied clock of the first clock, and the types of the modulator and the demodulator data packets are notified through receiving data type signals;
upon receiving a BT packet, a BLE packet, or a 2.4G packet, the method further comprises:
the radio frequency receiving module receives a wireless signal through an antenna, demodulates the wireless signal into an analog baseband signal, and converts the analog baseband signal into a digital baseband signal through an analog-to-digital converter;
the sampling module performs down-sampling processing on the digital baseband signal and sends the processed digital baseband signal to the synchronizer and the demodulator;
the synchronizer carries out synchronous processing on the processed digital baseband signals and transmits effective information and synchronous information of data frames to the demodulator;
the demodulator demodulates the digital baseband signal by using a corresponding demodulation technology according to the information provided by the synchronizer and according to the data type signal provided by the scheduler, extracts an original data packet and transmits the effective data packet to the data caching module;
the data caching module receives and caches the demodulated data and then sends the demodulated data to the scheduler;
the dispatcher sends the data packet to the corresponding baseband processing module according to the type of the data packet received from the data caching module;
and each baseband processing module unpacks the data packet according to the protocol standard.
2. A communication method based on a 2.4G multimode communication chip, comprising the steps of:
when sending BT or BLE data packets, a scheduler configures a modulator, a demodulator and a synchronizer to work at a first clock through clock control signals, and informs the modulator and the demodulator of the types of the data packets through sending data type signals;
when transmitting 2.4G data packets, the scheduler configures the modulator, the demodulator and the synchronizer to work on a second clock through clock control signals, wherein the second clock is a frequency-2 multiplied clock of the first clock, and the types of the modulator and the demodulator data packets are notified through transmitting data type signals;
when sending BT data, BLE data packets or 2.4G data packets, the method further comprises:
the baseband processing module receives the data packet sent by the upper protocol stack, carries out the baseband processing module layer packet according to the protocol standard, and sends the data packet to the dispatcher after the packet is formed;
after receiving the data packet, the scheduler sends the data packet to a data caching module according to the priority and the scheduling policy;
the data buffer module sends the data packet to a modulator according to a first-in first-out strategy;
the modulator modulates the baseband signal of the data packet by using a corresponding modulation technology according to the transmitted data type signal provided by the scheduler, and transmits the modulated data to a sampling module;
the sampling module performs up-sampling on the received data and then sends the up-sampled data to the digital-to-analog converter;
the digital-to-analog converter converts the received data into an analog baseband signal, and the analog baseband signal is transmitted to the antenna to be transmitted after being subjected to high-frequency modulation treatment by the radio frequency transmitting module.
3. A 2.4G multimode communication chip, comprising: the system comprises a baseband processing module, a modem module, a radio frequency module and a clock configuration module;
the baseband processing module comprises a BLE baseband processing module, a BT baseband processing module, a 2.4G baseband processing module and a scheduler;
the modem module comprises a data buffer module, a modulator, a demodulator, a synchronizer and a sampling module;
the radio frequency module comprises a radio frequency transmitting module, a radio frequency receiving module, an analog-to-digital converter and a digital-to-analog converter;
the clock configuration module comprises a first clock and a second clock;
the clock configuration module is connected with the scheduler and connected with the modulator, the demodulator and the synchronizer;
wherein, 2.4G multimode communication chip is used for:
when receiving a BT or BLE data packet, a scheduler configures a modulator, a demodulator and a synchronizer to work at a first clock through clock control signals, and informs the modulator and the demodulator of the type of the data packet through a received data type signal; when receiving 2.4G data packets, the scheduler configures the modulator, the demodulator and the synchronizer to work on a second clock through clock control signals, wherein the second clock is a frequency-2 multiplied clock of the first clock, and the types of the modulator and the demodulator data packets are notified through receiving data type signals;
when receiving a BT data packet, a BLE data packet or a 2.4G data packet, a radio frequency receiving module receives a wireless signal through an antenna, demodulates the wireless signal into an analog baseband signal, and converts the analog baseband signal into a digital baseband signal through an analog-to-digital converter; the sampling module performs down-sampling processing on the digital baseband signal and sends the processed digital baseband signal to the synchronizer and the demodulator; the synchronizer carries out synchronous processing on the processed digital baseband signals and transmits effective information and synchronous information of data frames to the demodulator; the demodulator demodulates the digital baseband signal by using a corresponding demodulation technology according to the information provided by the synchronizer and according to the data type signal provided by the scheduler, extracts an original data packet and transmits the effective data packet to the data caching module; the data caching module receives and caches the demodulated data and then sends the demodulated data to the scheduler; the dispatcher sends the data packet to the corresponding baseband processing module according to the type of the data packet received from the data caching module; each baseband processing module unpacks the data packet according to the protocol standard;
when sending BT or BLE data packets, a scheduler configures a modulator, a demodulator and a synchronizer to work at a first clock through clock control signals, and informs the modulator and the demodulator of the types of the data packets through sending data type signals; when transmitting 2.4G data packets, the scheduler configures the modulator, the demodulator and the synchronizer to work on a second clock through clock control signals, wherein the second clock is a frequency-2 multiplied clock of the first clock, and the types of the modulator and the demodulator data packets are notified through transmitting data type signals;
when BT data, BLE data packets or 2.4G data packets are sent, a baseband processing module receives the data packets sent by an upper protocol stack, and carries out baseband processing module layer group packet according to protocol standards, and after the group packet is completed, the data packets are sent to a scheduler; after receiving the data packet, the scheduler sends the data packet to a data caching module according to the priority and the scheduling policy; the data buffer module sends the data packet to a modulator according to a first-in first-out strategy; the modulator modulates the baseband signal of the data packet by using a corresponding modulation technology according to the transmitted data type signal provided by the scheduler, and transmits the modulated data to a sampling module; the sampling module performs up-sampling on the received data and then sends the up-sampled data to the digital-to-analog converter; the digital-to-analog converter converts the received data into an analog baseband signal, and the analog baseband signal is transmitted to the antenna to be transmitted after being subjected to high-frequency modulation treatment by the radio frequency transmitting module.
4. The 2.4G multimode communication chip of claim 3, wherein the clock configuration module comprises a one-out-of-two selector, a gating control terminal of the one-out-of-two selector being connected to the scheduler, a first input terminal being connected to a first clock signal, a second input terminal being connected to a second clock signal, and an output terminal being connected to the modulator, the demodulator and the synchronizer.
5. The 2.4G multimode communication chip of claim 3, wherein the sampling module further comprises a downsampling module and an upsampling module.
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| CN202111279389.4A CN113923640B (en) | 2021-10-29 | 2021-10-29 | 2.4G multimode communication chip and communication method thereof |
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| CN202111279389.4A CN113923640B (en) | 2021-10-29 | 2021-10-29 | 2.4G multimode communication chip and communication method thereof |
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| CN113923640A CN113923640A (en) | 2022-01-11 |
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| CN204334556U (en) * | 2015-02-02 | 2015-05-13 | 信华精机有限公司 | A kind of vehicle mounted communication module |
| CN205334711U (en) * | 2015-12-14 | 2016-06-22 | 天津益华微电子有限公司 | WLAN and bluetooth dual -mode communication chip with information security function |
| CN108600897A (en) * | 2018-07-20 | 2018-09-28 | 恒玄科技（上海）有限公司 | Realize the one drag two bluetooth headset and communication means of low frequency switching |
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| US20190342899A1 (en) * | 2018-05-07 | 2019-11-07 | Mediatek Inc. | Method for performing bluetooth transmission management, associated bluetooth circuit, and associated electronic device |
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| CN204334556U (en) * | 2015-02-02 | 2015-05-13 | 信华精机有限公司 | A kind of vehicle mounted communication module |
| CN205334711U (en) * | 2015-12-14 | 2016-06-22 | 天津益华微电子有限公司 | WLAN and bluetooth dual -mode communication chip with information security function |
| CN108600897A (en) * | 2018-07-20 | 2018-09-28 | 恒玄科技（上海）有限公司 | Realize the one drag two bluetooth headset and communication means of low frequency switching |
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| Avnet与德州仪器(TI)推介无线连接物联网解决方案;姜辉;;世界电子元器件(第07期);全文 * |
| TP for LTE_TDD_2600_US TR, band and channel arrangement;Clearwire, Sprint, NII Holdings;TSG-RAN Working Group 4 (Radio) Meeting #AH3-2010 R4-102448;全文 * |
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