CN101536326A - Receiving, transmitting method for Bluetooth signal and Bluetooth transceiver therein - Google Patents
Receiving, transmitting method for Bluetooth signal and Bluetooth transceiver therein Download PDFInfo
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- CN101536326A CN101536326A CN200680055944A CN200680055944A CN101536326A CN 101536326 A CN101536326 A CN 101536326A CN 200680055944 A CN200680055944 A CN 200680055944A CN 200680055944 A CN200680055944 A CN 200680055944A CN 101536326 A CN101536326 A CN 101536326A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- 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
Abstract
A receiving and transmitting method for bluetooth signal and a bluetooth transceiver therein. The receiving and transmitting method for bluetooth signal includes the steps: the bluetooth signal is received and/or transmitted by a RF unit of a wide band wireless communication apparatus which operates on the same frequency range. Receiving, transmitting and processing of the bluetooth are realized through using the RF unit of a wide band wireless communication apparatus which operates on the same frequency range, and the dedicated RF unit is not required to design for the bluetooth, therefore the realization cost of the bluetooth is decreased,and accordingly the cost and complexity of the wireless communication device with bluetooth function is decreased.
Description
Bluetooth signal reception, launching technique and its bluetooth transceiver therein technical field
The present invention relates to reception, transmission and the processing of cordless communication network, more particularly to wireless signal, specifically, it is related to a kind of Bluetooth signal reception, launching technique and its bluetooth transceiver therein, Bluetooth communication equipment.Background technology
With the development of wireless communication technology, in same i official is standby, generally there is various wireless communication device simultaneously, for example, in notebook computer or palm PC, being generally mounted with WLAN simultaneously（WLAN:Wireles s Local Area Networks) and bluetooth（BT:Bluetooth) radio communication device.Every kind of radio communication device is typically realized using two sets of relatively independent hardware or module, typically there is independent and special antenna, radio frequency unit and baseband signal processing unit etc., the radio communication device being achieved in that has higher hardware complexity and cost.If various radio communication devices can mutually share hardware/firmware/software resource, the implementation complexity and cost of the intelligent terminals such as palm PC, mobile phone will be substantially reduced.
Illustrated below by taking WLAN and bluetooth as an example.Bluetooth is a kind of short-distance wireless communication technology of wired connection between substitution electronic equipment, and it is mainly characterized in that good robustness, low-power consumption and low cost, is widely used in consumer electronics product.WLAN is then that one kind is widely used in computer, meter
IEEE802. the 11, wireless protocols such as IEEE802. lib and IEEE802. l lg.
With the extensive use of WLAN and bluetooth, in same equipment, such as computer and mobile phone intelligent terminal are typically provided simultaneously with WLAN and Bluetooth function.Because WLAN and bluetooth are usually operated at identical frequency range, i.e. 2. 4GHz industry, science, medical treatment（ISM) frequency range.In order to avoid interference, WLA and bluetooth typically understand time-sharing work, though i.e. WLAN and bluetooth using two sets of independent specialized hardware/modules come
Realize, when WLAN works, bluetooth is also idle, and vice versa.
Therefore, in the prior art, if Wireless Telecom Equipment installs WLAN and bluetooth simultaneously, generally require each using two sets of relatively independent hardware/modules, i.e. with independent special-purpose radio-frequency unit and independent special baseband signal processing unit etc., this will cause Wireless Telecom Equipment to have higher complexity and the cost of implementation content of the invention
In view of the above-mentioned problems in the prior art, the present invention provides a kind of reception of Bluetooth signal, launching technique and its bluetooth transceiver therein, Bluetooth communication equipment.This method utilizes the radio frequency unit of the broadband wireless communications device for the non-bluetooth specific for being operated in similar frequency bands, realize the reception, transmitting and processing of Bluetooth signal, need not be the special radio frequency unit of Bluetooth, so as to reduce the cost of implementation of bluetooth, the complexity and cost of the Wireless Telecom Equipment with Bluetooth function are correspondingly also reduced.
The present invention provides a kind of Bluetooth signal reception, launching technique, wherein bluetooth letter is received and/or sent using the radio frequency unit for the broadband wireless communications device for being operated in similar frequency bands.
The present invention also provides a kind of bluetooth transceiver therein, including antenna, signal processing unit and upper-layer protocol unit；Wherein,
Also include：Radio frequency unit, is connected with the signal processing unit and antenna, is broadband wireless communications radio frequency unit, for reception antenna transmit radiofrequency signal and progress be treated as after intermediate frequency or baseband signal, be sent to signal processing unit；Intermediate frequency or baseband signal that receipt signal processing unit is sent, antenna is sent to after being handled.
The present invention provides a kind of Bluetooth communication equipment, including bluetooth transceiver therein and main frame；Wherein, bluetooth transceiver therein includes：Antenna, broadband wireless communications radio frequency unit, signal processing unit and upper-layer protocol processing unit；Wherein,
Antenna, for receiving from including the radiofrequency signal of Bluetooth RF signal message in the air, and transmit the signal to broadband wireless communications radio frequency unit；The radiofrequency signal transmitted from broadband wireless communications radio frequency unit is received, is launched to aerial；
Broadband wireless communications radio frequency unit, the radiofrequency signal and progress transmitted for reception antenna is treated as after intermediate frequency or baseband signal, is sent to signal processing unit；Intermediate frequency or baseband signal that receipt signal processing unit is sent, antenna is sent to after being handled；Wherein, the bandwidth of the intermediate frequency or baseband signal is not less than the bandwidth of bluetooth baseband signal；
Signal processing unit, receives intermediate frequency or baseband signal from broadband wireless communications radio frequency unit, the signal is handled, upper-layer protocol processing unit is then passed to；The control command and data of upper-layer protocol processing unit transmission are received, under the control of the control command, the data is carried out to be treated as after intermediate frequency or baseband signal, broadband wireless communications radio frequency unit is sent to；
Upper-layer protocol processing unit, it is connected with main frame and signal processing unit, at least including link control unit, control command and the data to be sent that the link control unit Receiving Host is assigned, the data are handled under the control of control command, signal processing unit is then passed to；The signal of receipt signal processing unit transmission, main frame is sent to after being handled.
Therefore, the present invention utilizes the existing radio frequency unit for being operated in the broadband wireless communications device with bluetooth similar frequency bands of Wireless Telecom Equipment, realize the reception, transmitting and processing of Bluetooth signal, need not be exclusively for Bluetooth radio frequency unit, so as to reduce the cost of implementation of bluetooth, the complexity and cost of the Wireless Telecom Equipment with Bluetooth function are correspondingly also reduced.' brief description of the drawings
Fig. 1 is the composition schematic diagram of the bluetooth transceiver therein of the embodiment of the present invention one；
Fig. 2 is the composition schematic diagram of bluetooth transceiver therein in the embodiment of the present invention two；
Figure3A to Fig. 3 D is figure2The structural representation of the transmitting processing unit of middle digital processing element；Fig. 4 is the structural representation of the reception processing unit of digital processing element in Fig. 2；
Fig. 5 A to 5D are the structural representation of digital demodulator in Fig. 4；
Fig. 6 is the composition schematic diagram of the bluetooth transceiver therein of the embodiment of the present invention three.Embodiment
The present invention provides a kind of reception of Bluetooth signal, launching technique and its bluetooth transceiver therein, Bluetooth communication equipment.Utilize the radio frequency unit of the existing broadband wireless communications device for being operated in similar frequency bands of Wireless Telecom Equipment, realize the reception, transmitting and processing of Bluetooth signal, need not be the special radio frequency unit of Bluetooth, reception, transmitting and the processing to broadband signal are not influenceed simultaneously, so as to reduce the cost of implementation of bluetooth, the complexity and cost of the Wireless Telecom Equipment with Bluetooth function are correspondingly also reduced.Below in conjunction with accompanying drawing, the present invention is described in detail.
The ' of embodiment one
The present invention provides a kind of bluetooth transceiver therein, as shown in figure 1, the bluetooth transceiver therein 100 includes：Antenna 101, broadband wireless communications radio frequency unit 102, signal processing unit 103 and upper-layer protocol processing unit 104;Wherein, antenna 101, for receiving from including the radiofrequency signal of complete Bluetooth RF signal message in the air, and transmit the signal to broadband wireless communications radio frequency unit 102;The radiofrequency signal for including complete Bluetooth RF signal message transmitted from broadband wireless communications radio frequency unit 102 is received, is radiated to aerial；
Broadband wireless communications radio frequency unit 102, the radiofrequency signal and progress transmitted for reception antenna 101 is treated as after the intermediate frequency comprising complete beneficial tooth baseband signal or baseband signal, it is sent to signal processing unit 103, wherein, the bandwidth of intermediate frequency or baseband signal is not less than the bandwidth of bluetooth baseband signal；Intermediate frequency or baseband signal that receipt signal processing unit 103 is sent, are sent to antenna 101 after being handled;
Signal processing unit 103, receives the intermediate frequency comprising complete bluetooth baseband signal or baseband signal from broadband wireless communications radio frequency unit 102, the signal is handled, upper-layer protocol processing unit 104 is then passed to;The control command and data of the transmission of upper-layer protocol processing unit 104 are received, under the control of control command, the data is carried out to be treated as after intermediate frequency or baseband signal, broadband wireless communications radio frequency unit 102 is sent to; '
Upper-layer protocol processing unit 104, it is connected with main frame 105 and signal processing unit 103, at least include link control unit, control command and the data to be sent that the link control unit Receiving Host 105 is assigned, and the evidence is entered " to handle, the data after control command and processing are sent into signal processing unit 103;The data that receipt signal processing unit 103 is transmitted, are sent to main frame 105 after being handled.Wherein, by leading
Control command and the data to be sent that the link manager of machine 105 is assigned.
In the present embodiment, the antenna 101 can use bluetooth specific antenna, can also utilize the antenna for the other broadband wireless communications devices for being operated in similar frequency bands.WLAN antennas are used in the present embodiment, but are not limited to such a.
In the present embodiment, need not be the special radio frequency unit of Bluetooth, but use the radio frequency unit of the broadband wireless communications device for the non-bluetooth specific for being operated in similar frequency bands, you can the reception, transmitting and processing of Bluetooth signal are realized, so as to reduce the cost of implementation of bluetooth.Wherein, it can be used for meeting the radio frequency unit of following condition, i.e., frequency range includes bluetooth working frequency range, the bandwidth of the intermediate frequency or baseband signal of input and output is not less than the bandwidth of bluetooth baseband signal.WLAN radio frequency units can be used in the present embodiment.
In addition, the broadband wireless communications radio frequency unit 102 can also complete the reception of broadband signal, transmitting and processing, similarly to the prior art, here is omitted for this part.
In the present embodiment, the processing such as described 102 pairs of Bluetooth RF signals from antenna 101 of broadband wireless communications radio frequency unit are amplified successively in amplifier, down coversion and wave filter, down coversion and filtering, it is then passed to signal processing unit 103, wherein, the bandwidth of wave filter is not less than the bandwidth of bluetooth baseband signal；
The broadband wireless communications radio frequency unit 102 receives bluetooth intermediate frequency or baseband signal in signal processing unit 103, utilizes the low-noise amplifier in WLAN radio frequency units 102（LNAN:Low Noi se Ampl if ier), frequency mixer, phaselocked loop（PLL:Phase- locked Loop), automatic gain controller (AGC:Auto-gain Control ler) and wave filter etc. radiofrequency signal is amplified, the processing such as down coversion and filtering, and analog intermediate frequency/baseband signal comprising desired complete bluetooth baseband signal message after processing is sent to signal processing unit203；Wherein, the bandwidth of wave filter is not less than the bandwidth of bluetooth baseband signal.
In addition, upper-layer protocol unit 104 may also include link management unit, similarly to the prior art, here is omitted for this part.
In the present embodiment, baseband signal can also be counted as a kind of special intermediate-freuqncy signal, i.e., the intermediate-freuqncy signal that intermediate frequency is zero.Below, except special instruction, the situation that the intermediate-freuqncy signal is all zero comprising intermediate frequency.
Embodiment two '
As shown in figure 1, being the schematic diagram of bluetooth transceiver therein 200 of the embodiment of the present invention.Wherein, including：WLAN antennas 201, WLAN radio frequency units 202, signal processing unit 203, upper-layer protocol processing unit 204;In the present embodiment, signal processing unit 203 includes：Analog-digital converter（ADC) 203a, digital analog converter 203b and digital processing element 203c;Wherein,
Analog-digital converter（ADC) 203a, the analog signal for including bluetooth intermediate-freuqncy signal of WLAN radio frequency units 202 is carried out for receiving, and digital processing element 203c processing is sent to after carrying out analog-to-digital conversion；
Digital analog converter（DAC) 203b, receives the bluetooth digital medium-frequency signal of digital processing element 203c transmission, and WLAN radio frequency units 202 are sent to after carrying out digital-to-analogue conversion.
In the present embodiment, as shown in Fig. 2 digital processing element 203c includes transmitting processing unit and reception processing unit.Reception processing unit is connected with analog-digital converter 03a and upper-layer protocol processing unit 204；Transmitting processing unit is connected with digital analog converter 203b and upper-layer protocol processing unit 204.
The structure as shown in Fig. 3 A to Fig. 3 D, but not limited to this can be used by launching processing unit in the present embodiment, can also use other structures.
As shown in Figure 3A, processing unit is launched, the data for receiving the transmission of upper-layer protocol processing unit 204 turn into digital baseband signal after carrying out transmitting bit stream process, digital modulation, are sent to digital analog converter DAC203b;Wherein, transmitting processing unit at least includes：Launch bit stream processing unit 301 and digital modulator 302;Wherein,
Launch bit stream processing unit 301, link control message and data for receiving the transmission of upper-layer protocol processing unit 204 carry out bit process, i.e. carried out according to Bluetooth protocol plus packet header error checking position (HEC:Header Error Check) or cyclic redundancy school ^：Position（CRC:Cycl ic redundancy check), encryption, the bit process such as albefaction and channel coding；
Digital modulator 302, can use GFSK Gaussian Frequency Shift Keying（GFSK:Gaus s ian Frequency Shif t Keying) or differential phase keying (DPSK)（DPSK:Different ia l Phase Shi f t Keying) modulator, but not limited to this；It is connected with transmitting bit stream processing unit 301, receives the data after transmitting bit stream processing unit 301 is handled, numeral GFSK or DPSK modulation is carried out, then by the numeral after modulation
Baseband signal sends to digital analog converter DAC2G3a and is converted into analog signal.
As shown in Figure 3 B, the transmitting processing unit may include：Wave digital lowpass filter（LPF:
Low-Pas s Fi l ter) 303, it is converted into analog signal to being sent to digital analog converter DAC203b after the baseband signal progress LPF after modulation.
As shown in Figure 3 C, the transmitting processing unit may also include digital intermediate frequency（IF) upconverter 304;Digital intermediate frequency up-conversion is carried out to filtered baseband signal, digital analog converter is then resent to（DAC:
Di gi ta l- to- Ana log Conver ter) 203b is converted into analog signal.
In addition, the transmitting processing unit can also be using structure as shown in Figure 3 D.
In the present embodiment, reception processing unit, signal for receiving analog-digital converter ADC203a transmission, digital intermediate frequency down coversion, digital low-pass filtering are carried out to the signal, and carry out obtaining link control message after digital demodulation and reception bit stream process according to time synchronization information and receive data, and the link control message and reception data are sent to upper-layer protocol processing unit 204.The composition of the reception processing unit is as shown in Fig. 4.
As shown in figure 4, the reception processing unit includes：Digital intermediate frequency low-converter 401, wave digital lowpass filter（LPF) 402, synchrotimer 403, digital demodulator 404 and reception bit-stream processor 405;Wherein,
Digital intermediate frequency low-converter 401, the signal for receiving analog-digital converter ADC203a transmission, digital intermediate frequency down-converted is carried out to the signal；
Wave digital lowpass filter（LPF) 402, it is connected with digital intermediate frequency low-converter 401 and synchrotimer 403, digital demodulator 404, the signal of the transmission of digital intermediate frequency low-converter 401 is received, synchrotimer 403 and digital demodulator 404 are sent to after carrying out LPF to the signal；
Synchrotimer 403, for obtaining time synchronization information according to the signal after LPF, and the synchronizing information is used to control digital demodulator 404 and the work schedule of bit-stream processor 405 is received；Digital demodulator 404, is GFSK or DPSK demodulators；With wave digital lowpass filter（LPF) 402, synchrotimer 403 and reception bit-stream processor 405 are connected, and the signal is demodulated for receiving the signal after digital low-pass filtering, and according to the synchrotimer 302c synchronizing informations sent, and by after demodulation
Signal be sent to reception bit-stream processor 405;
Receive bit-stream processor 405, it is connected with synchrotimer 403, the synchronizing information sent according to synchrotimer 403 carries out receiving bit stream process to the signal after the demodulation that receives, data and link control message are received to obtain, and the reception data and link control message are sent to upper-layer protocol processing unit 204.
It is the structural representation of the digital GFSK or DPSK demodulators in Fig. 4 as shown in Fig. 5 A to 5D.As shown in Fig. 5 A, GFSK or DPSK demodulators 302 include：
Downsampling unit 501, the frequency offset correction unit 502 being connected with downsampling unit 501 and frequency offset correction unit 502The differential sensing units 503 of connection, the decision unit 504 being connected with differential sensing units 503, the signal that wave digital lowpass filter 402 is transmitted is carried out after down-sampling, frequency departure correction, Differential Detection and judgement respectively, reception bit-stream processor 405 is sent to.
As shown in Figure 5 B, GFSK the or DPSK demodulators 404 may also include：Wave digital lowpass filter (LPF) 505, is arranged between frequency offset correction unit 502 and differential sensing units 503.
As shown in Figure 5 C, GFSK the or DPSK demodulators 404 may also include：Balanced device 506, is arranged between differential sensing units 503 and decision unit 504.
In addition, can also be using structure as shown in Figure 5 D, here is omitted.
Therefore, as shown in Figure 5 C, wave digital lowpass filter is worked as（LPF) 402 digital baseband signal is admitted to after digital GFSK or DPSK demodulators 404, down-sampling is carried out first in digital GFSK or DPSK demodulators 404, obtain the bluetooth baseband signal of relatively low sampling rate, frequency departure correction and further LPF are carried out again, then Differential Detection and equilibrium are carried out, finally the signal after equilibrium is made decisions, so as to recover desired data, and the further processing of reception bit stream process 405 is delivered to.
Wherein, above-mentioned wave digital lowpass filter（LPF) 505 and balanced device 506 to be optional.
In the present embodiment, digital processing element 203c can be by application specific integrated circuit（ASIC:Appl icat ion Specif ic Integrated Ci rcui t) it is real, also can be by digital signal processor（ DSP:Digi ta l Signa l Proces sor) etc. programmable processor realize.
In the present embodiment, using the structure as shown in Fig. 2,3A ~ 3D, 4 and Fig. 5 A ~ 5C, but the present invention
Such a structure is not limited to, can also be realized using other structures.
Embodiment three
As shown in fig. 6, being the structural representation of bluetooth transceiver therein 600 of the embodiment of the present invention three.Compared with embodiment two, in the present embodiment, the signal processing unit 603 may also include：It is simulation low-pass filter or analog bandpass filter in analog filter, the present embodiment（LPF/BPF) 603a, is arranged between WLAN radio frequency units 602 and analog-digital converter ADC603b, for analog signal to be sent into before ADC603b, reduces the bandwidth of analog signal, restrains out-of-band interference；
In addition, other composition part WLAN antennas 601, digital processing element 603d, upper-layer protocol unit 604 are identical with embodiment one, here is omitted.
Example IV
Hereinafter, the reception and launching technique referring to the drawings to Bluetooth signal of the invention are illustrated.
This method is：Bluetooth signal is received and/or sent using the radio frequency unit for the broadband wireless communications device for being operated in similar frequency bands.Wherein, it is not necessary to for the special radio frequency unit of Bluetooth, you can the reception, transmitting and processing of Bluetooth signal are realized, so as to reduce the cost of implementation of bluetooth.
In addition, can be used for the radio frequency unit for meeting following condition, i.e., frequency range includes bluetooth working frequency range, and the bandwidth of the intermediate frequency or baseband signal of input and output is not less than the bandwidth of bluetooth baseband signal.Illustrated in the present embodiment with WLAN radio frequency units.
When receiving Bluetooth signal, its flow is：
WLAN antennas 201 include the radiofrequency signal of desired complete Bluetooth RF signal message from aerial reception:And transmit the signal to WLAN radio frequency units 202;
WLAN radio frequency units202The radiofrequency signal is received, the low-noise amplifier in WLAN radio frequency units 202 is utilized（LNAN:Low Noi se Ampl if ier), frequency mixer, phaselocked loop（PLL:Phase-locked Loop), automatic gain controller（AGC:Auto- ga in Control ler) and wave filter etc. radiofrequency signal is amplified, the processing such as down coversion and filtering, and the analog if signal comprising desired complete bluetooth baseband signal message after processing is sent to signal processing unit 203；
203 pairs of intermediate-freuqncy signals of signal processing unit are handled, wherein, the intermediate frequency is believed first
Number in analog-digital converter ADC203Analog-to-digital conversion is carried out in a, digital processing element is then sent to203C processing, to obtain link control message and receive data；
As shown in Figure 2,4, processing procedure includes in digital processing element 203c：
Digital intermediate frequency down coversion and digital low-pass filtering are carried out in digital intermediate frequency low-converter 401 and numeral LPF402 to the signal after analog-to-digital conversion；Time synchronized is obtained by synchrotimer 403, according to time synchronization information to the signal after LPF is in digital GFSK or DPSK demodulators 404 and receives the progress digital demodulation of bit-stream processor 405 and reception bit stream process, finally acquisition link control message and reception data, and the empty unit processed of chain that empty information processed and reception data are sent in upper-layer protocol processing unit 204；Link control unit in upper-layer protocol processing unit 204 enters after line link control process to link control message and reception data according to Bluetooth protocol specification, and result is sent into main frame 205.
The flow that the signal after LPF carries out digital demodulation is illustrated by taking demodulator shown in Fig. 5 C as an example：
To low pass filter in downsampling unit 501（LPF) signal of 402 transmission carries out down-sampling；Then in frequency offset correction unit 502, wave digital lowpass filter（LPF) 505, differential sensing units503, balanced device 506, decision unit 504 carry out frequency offset correction, LPF, Differential Detection, equilibrium and judgement after, be sent to receive bit-stream processor 405.
In addition, as shown in fig. 6, before analog-to-digital conversion is carried out to the intermediate-freuqncy signal, in addition to step：Low pass or bandpass filtering are carried out in low pass or bandpass filter 603a to the intermediate-freuqncy signal, wherein, low pass or bandpass filter 603a bandwidth are sufficiently wide, to completely include the frequency spectrum of desired bluetooth intermediate-freuqncy signal. .
When launching Bluetooth signal, its flow is：
Control command, link control message and the data to be sent that the link control unit Receiving Host 205 of upper-layer protocol processing unit 204 is assigned, and line link control process is entered according to Bluetooth protocol to link control message and the data to be sent；
Signal processing unit 203 is further processed into as bluetooth intermediate-freuqncy signal under the control of control command to the data after processing；Including step：
Transmitting bit stream process is carried out in transmitting bit-stream processor 301, i.e., according to Bluetooth protocol progress HEC/CRC, the bit process such as encryption, albefaction and channel coding；Then access numeral GFSK/DPSK modulators 302 are modulated, as digital baseband signal；It is then sent to wave digital lowpass filter（LPF) 303 and digital intermediate frequency（IF) upconverter 304 carries out LPF and intermediate frequency up-conversion, subsequently into carrying out digital-to-analogue conversion in digital analog converter DAC203b；
Signal after digital-to-analogue conversion is handled in WLAN radio frequency units 202, using the wave filter in WLAN radio frequency units 202, frequency mixer and power amplifier etc., the signal is filtered, WLAN antennas 201 are sent to after the processing such as up-conversion and amplification;Then, launched by WLAN antennas 201 to aerial.
In the above-described embodiments, due between bluetooth adjacent channel at intervals of 1MHz, and the interval between WLAN channels is usually 5MHz, variable digital intermediate frequency is used in the up/down frequency conversion of Bluetooth signal, the present embodiment in order to be obtained using WLAN radio frequency units（), IF so that the channel at intervals of 1MHz required for obtaining bluetooth.
In above-described embodiment, if the frequency synthesizer that the WLAN radio frequency units used are configured can obtain all carrier waves at intervals of 1MHz in Bluetooth band, so, in the present embodiment, using fixed digital intermediate frequency down coversion during reception, using fixed digital intermediate frequency up-conversion during transmitting.Wherein, on digital intermediate frequency the frequency of/frequency converter could be arranged to zero, so as to so that WLAN radio frequency unit input/output bluetooth baseband signals.Digital intermediate frequency up-converter can also be deleted, so as to directly send digital analog converter the signal after digital modulation or digital low-pass filtering.
Embodiment five '
The present invention also provides a kind of Bluetooth communication equipment, and the equipment includes Bluetooth receptions device and main frame；Wherein Bluetooth receptions device can be using the device shown in Fig. 2 or Fig. 5.Here is omitted.
From the above, the present invention utilizes the radio frequency unit of the existing broadband wireless communications for being operated in similar frequency bands of Wireless Telecom Equipment, realize the reception, transmitting and processing of Bluetooth signal, need not be the special radio frequency unit of Bluetooth, so as to reduce the cost of implementation of bluetooth, the cost and complexity of the Wireless Telecom Equipment with Bluetooth function are correspondingly also reduced.
Above-described embodiment is to illustrate the invention and not to limit the present invention.
Claims (31)
- Claims1. a kind of Bluetooth signal is received, launching technique, it is characterised in that Bluetooth signal is received and/or sent using the radio frequency unit for the broadband wireless communications device for being operated in similar frequency bands.2. Bluetooth signal according to claim 1 is received, launching technique, it is characterised in that when receiving Bluetooth signal, including step：Receive from the aerial radiofrequency signal for including Bluetooth RF signal message；The radio frequency unit be treated as intermediate frequency or baseband signal comprising bluetooth baseband signal message to the radiofrequency signal；The bandwidth of the intermediate frequency or baseband signal is not less than the bandwidth of bluetooth baseband signal；The intermediate frequency or baseband signal are handled, to obtain Bluetooth link control information and receive data； 'Further handled according to link control message receiving data, and result is sent to main frame.3. Bluetooth signal according to claim 2 is received, launching technique, it is characterised in that the intermediate frequency or baseband signal are handled, including Bu Sudden：Analog-to-digital conversion is carried out to the intermediate frequency or baseband signal；Digital intermediate frequency down coversion and digital filtering are carried out to the signal after analog-to-digital conversion；Digital demodulation is carried out to filtered signal according to time synchronization information；Signal after demodulation is carried out to receive bit stream process.4. Bluetooth signal according to claim 3 is received, launching technique, it is characterised in that described that digital demodulation, including step are carried out to filtered signal：Carry out down-sampling and frequency departure correction；Carry out Differential Detection；Make decisions.5. Bluetooth signal according to claim 4 is received, launching technique, it is characterised in that before Differential Detection is carried out, in addition to Bu Sudden：Carry out digital filtering.6. Bluetooth signal according to claim 4 is received, launching technique, it is characterised in that entered After row Differential Detection, in addition to step：Equilibrium treatment is carried out to the signal after Differential Detection.7. Bluetooth signal according to claim 3 is received, launching technique, it is characterised in that before analog-to-digital conversion is carried out to intermediate frequency or baseband signal, in addition to step：The intermediate frequency or baseband signal are filtered.8. Bluetooth signal according to claim 1 is received, launching technique, it is characterised in that when launching Bluetooth signal, including step：Control command, link control message and the data to be sent that Receiving Host is assigned, and link control message and the data to be sent are handled；Under the control of control command, the data after processing are further processed into for intermediate frequency or baseband signal；The intermediate frequency or baseband signal are handled in the radio frequency unit, the radiofrequency signal for including Bluetooth RF signal message is obtained； ·Then, by the emission of radio frequency signals of acquisition to aerial.9. Bluetooth signal according to claim 8 is received, launching technique, it is characterised in that under the control of control command, the data after processing are further handled, including Bu Sudden：Carry out transmitting bit stream process；Digital modulation is carried out to the data after processing, as digital baseband signal；Digital-to-analogue conversion is carried out to data signal.10. Bluetooth signal according to claim 9 is received, launching technique, it is characterised in that before digital-to-analogue conversion is carried out to data signal, in addition to step：Digital filtering is carried out to the signal after digital modulation.11. Bluetooth signal according to claim 9 is received, launching technique, it is characterised in that before digital-to-analogue conversion is carried out to data signal, in addition to step：Digital intermediate frequency up-conversion is carried out to the signal after digital modulation.12.-kind of bluetooth transceiver therein, including antenna, signal processing unit and upper-layer protocol unit；Characterized in that, also including：Radio frequency unit, is connected with the signal processing unit and antenna, be broadband without Line communication radio frequency unit, the radiofrequency signal and progress transmitted for reception antenna is treated as after intermediate frequency or baseband signal, is sent to signal processing unit；Intermediate frequency or baseband signal that receipt signal processing unit is sent, antenna is sent to after being handled.13. bluetooth transceiver therein according to claim 12, it is characterised in that the bandwidth of the band signal of intermediate frequency or base 5 is not less than the bandwidth of bluetooth baseband signal.14. bluetooth transceiver therein according to claim 12, it is characterised in that the signal processing unit includes：Analog-digital converter, digital analog converter and digital processing element；Wherein,Analog-digital converter, for receiving intermediate frequency or baseband signal from broadband wireless communications radio frequency unit, carries out being sent to digital processing element after analog-to-digital conversion being handled；0 digital analog converter, receives the intermediate frequency or baseband signal of digital processing element transmission, broadband wireless communications radio frequency unit is sent to after carrying out digital-to-analogue conversion；Digital processing element, signal for receiving analog-digital converter transmission, digital intermediate frequency down coversion, digital filtering are carried out to the signal, and carry out obtaining link control message after digital demodulation and reception bit stream process according to time synchronization information and receive data, and the link control message and reception data are transmitted into paramount 5 layer protocol processing unit；And the data for receiving the transmission of upper-layer protocol processing unit, turn into baseband signal after carrying out transmitting bit stream process, digital modulation, are sent to digital analog converter.15. bluetooth transceiver therein according to claim 14, it is characterised in that the digital processing element includes reception processing unit and transmitting processing unit；Wherein,0 reception processing unit, the signal for receiving analog-digital converter transmission, is carried out in numeral to the signal, frequency down coversion, digital filtering, and carry out obtaining link control message after digital demodulation and reception bit stream process according to time synchronization information and receive data, and the link control message and reception data are sent to upper-layer protocol processing unit； .Launch processing unit, the data for receiving the transmission of upper-layer protocol processing unit turn into baseband signal after carrying out transmitting bit 5 stream process, digital modulation, are sent to digital analog converter.16. bluetooth transceiver therein according to claim 15, it is characterised in that the transmitting processing Unit includes：Launch bit stream processing unit and digital modulator；Wherein,Launch bit stream processing unit, the data for receiving the transmission of upper-layer protocol processing unit carry out bit process；Digital modulator, is connected with transmitting bit stream processing unit, receives the data after transmitting bit stream processing unit processing, sent after digital modulation turns into baseband signal to digital analog converter.17. bluetooth transceiver therein according to claim 16, characterized in that, the transmitting processing unit also includes digital filter, it is arranged between digital modulator and digital analog converter, baseband signal after modulation is filtered, and is sent to digital analog converter.18. bluetooth transceiver therein according to claim 16, it is characterized in that, the transmitting processing unit also includes digital intermediate frequency up-converter, it is arranged between digital modulator and digital analog converter, digital intermediate frequency up-conversion is carried out to the baseband signal after modulation, and is sent to digital analog converter.19. bluetooth transceiver therein according to claim 17, it is characterized in that, the transmitting processing unit also includes digital intermediate frequency up-converter, it is arranged between digital filter and digital analog converter, digital intermediate frequency up-conversion is carried out to filtered baseband signal, and is sent to digital analog converter.20, bluetooth transceiver therein according to claim 15, it is characterised in that the reception processing unit includes：Digital intermediate frequency low-converter, digital filter, synchrotimer, digital demodulator and reception bit-stream processor；Wherein,Digital intermediate frequency low-converter, the signal for receiving analog-digital converter transmission, digital intermediate frequency down-converted is carried out to the signal；Digital filter, is connected with digital intermediate frequency low-converter and synchrotimer, digital demodulator, receives the signal of digital intermediate frequency low-converter transmission, synchrotimer and digital demodulator are sent to after being filtered to the signal；Synchrotimer, obtains time synchronization information, and the synchronizing information is sent into digital demodulator and bit-stream processor is received for SECO according to filtered signal；Digital demodulator, is connected with digital filter, synchrotimer and reception bit-stream processor, for receiving the signal after digital filtering, and the synchronizing information sent according to synchrotimer is carried out to the signal Demodulation, and the signal after demodulation is sent to reception bit-stream processor；Bit-stream processor is received, be connected with synchrotimer, the synchronizing information sent according to synchrotimer carries out reception bit stream process to the signal after the demodulation that receives, to obtain reception data, and the reception data is sent into upper-layer protocol processing unit.21. bluetooth transceiver therein according to claim 20, it is characterised in that the digital demodulator at least includes：Downsampling unit, the frequency offset correction unit being connected with downsampling unit, the differential sensing units being connected with frequency offset correction unit, the decision unit being connected with differential sensing units, the signal that digital filter is transmitted is carried out after down-sampling, frequency departure correction, Differential Detection and judgement respectively, reception bit-stream processor is sent to.22. bluetooth transceiver therein according to claim 21, it is characterised in that the digital demodulator also includes digital filter, is arranged between frequency offset correction unit and differential sensing units.23. bluetooth transceiver therein according to claim 21, it is characterised in that the digital demodulator also includes balanced device, is arranged between differential sensing units and decision unit.24. bluetooth transceiver therein according to claim 14, it is characterised in that the signal processing unit also includes analog filter, is arranged between broadband wireless communications radio frequency unit and analog-digital converter.25. bluetooth transceiver therein according to claim 12, it is characterised in that the antenna is the antenna that Bluetooth antenna or broadband wireless communications communicate.26. bluetooth transceiver therein according to claim 12, it is characterized in that, the upper-layer protocol processing unit, it is connected with main frame and signal processing unit, at least include link control unit, control command and the data to be sent that the link control unit Receiving Host is assigned, and the data are handled, the data after the control command and processing are sent to signal processing unit；The signal of receipt signal processing unit transmission, main frame is sent to after being handled.27.-kind of Bluetooth communication equipment, it is characterised in that including bluetooth transceiver therein and main frame；Wherein, bluetooth transceiver therein includes：Antenna, broadband wireless communications radio frequency unit, signal processing unit and upper-layer protocol processing unit；Wherein,Antenna, for receiving from including the radiofrequency signal of Bluetooth RF signal message in the air, and this is believed Number it is sent to broadband wireless communications radio frequency unit；The radiofrequency signal transmitted from broadband wireless communications radio frequency unit is received, is launched to aerial；Broadband wireless communications radio frequency unit, the radiofrequency signal and progress transmitted for reception antenna is treated as after intermediate frequency or baseband signal, is sent to signal processing unit；Intermediate frequency or baseband signal that receipt signal processing unit is sent, antenna is sent to after being handled；Wherein, the bandwidth of the intermediate frequency or baseband signal is not less than the bandwidth of bluetooth baseband signal；Signal processing unit, receives intermediate frequency or baseband signal from broadband wireless communications radio frequency unit, the signal is handled, upper-layer protocol processing unit is then passed to；The control command and data of upper-layer protocol processing unit transmission are received, under the control of the control command, the data is carried out to be treated as after intermediate frequency or baseband signal, broadband wireless communications radio frequency unit is sent to；Upper-layer protocol processing unit, it is connected with main frame and signal processing unit, at least including link control unit, control command and the data to be sent that the link control unit Receiving Host is assigned, the data are handled under the control of control command, signal processing unit is then passed to；The signal of receipt signal processing unit transmission, main frame is sent to after being handled.28. Bluetooth communication equipment according to claim 27, it is characterised in that the signal processing unit includes：Analog-digital converter, digital analog converter and digital processing element；Wherein,Analog-digital converter, for receiving intermediate frequency or baseband signal from broadband wireless communications radio frequency unit, carries out being sent to digital processing element after analog-to-digital conversion being handled；Digital analog converter, receives the intermediate frequency or baseband signal of digital processing element transmission, broadband wireless communications radio frequency unit is sent to after carrying out digital-to-analogue conversion;Digital processing element, including reception processing unit and transmitting processing unit；Wherein,Reception processing unit, signal for receiving analog-digital converter transmission, digital intermediate frequency down coversion, digital filtering are carried out to the signal, and carry out digital demodulation according to time synchronization information and receive to obtain after bit stream process to receive data, and the reception data are sent to upper-layer protocol processing unit；Launch processing unit, the data for receiving the transmission of upper-layer protocol processing unit turn into baseband signal after carrying out transmitting bit stream process, digital modulation, are sent to digital analog converter.29. Bluetooth communication equipment according to claim 28, it is characterised in that the transmitting processing unit includes：Launch bit stream processing unit and digital modulator；Wherein,Launch bit stream processing unit, the data for receiving the transmission of upper-layer protocol processing unit carry out bit process；Digital modulator, is connected with transmitting bit stream processing unit, receives the data after transmitting bit stream processing unit processing, sent after digital modulation turns into baseband signal to digital analog converter.30. Bluetooth communication equipment according to claim 28, it is characterised in that the reception processing unit includes：Digital intermediate frequency low-converter, digital filter, synchrotimer, digital demodulator and reception bit-stream processor；Wherein,Digital intermediate frequency low-converter, the signal for receiving analog-digital converter transmission, digital intermediate frequency down-converted is carried out to the signal；Digital filter, is connected with digital intermediate frequency low-converter and synchrotimer, digital demodulator, receives the signal of digital intermediate frequency low-converter transmission, synchrotimer and digital demodulator are sent to after being filtered to the signal；Synchrotimer, obtains time synchronization information, and the synchronizing information is sent into digital demodulator and bit-stream processor is received for SECO according to filtered signal；Digital demodulator, it is connected with digital filter, synchrotimer and reception bit-stream processor, the signal is demodulated with the synchronizing informations for walking device transmission for receiving the signal after digital filtering, and according to the time, and the signal after demodulation is sent to reception bit-stream processor；Bit-stream processor is received, be connected with synchrotimer, the synchronizing information sent according to synchrotimer carries out reception bit stream process to the signal after the demodulation that receives, to obtain reception data, and the reception data is sent into upper-layer protocol processing unit.31. Bluetooth communication equipment according to claim 28, it is characterised in that the signal processing unit also includes analog filter, is arranged between broadband wireless communications radio frequency unit and analog-digital converter.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2006/003519 WO2008074190A1 (en) | 2006-12-21 | 2006-12-21 | Receiving, transmitting method for bluetooth signal and bluetooth transceiver therein |
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| CN101536326A true CN101536326A (en) | 2009-09-16 |
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| WO (1) | WO2008074190A1 (en) |
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| CN102684754B (en) * | 2011-03-11 | 2015-05-13 | 赖之安 | Bluetooth transmission module and bluetooth device with same |
| CN102740504A (en) * | 2011-04-01 | 2012-10-17 | 苏州英诺迅科技有限公司 | WiFi communication system and method |
| CN113765545B (en) * | 2021-09-02 | 2022-10-28 | 上海微波技术研究所（中国电子科技集团公司第五十研究所） | Bluetooth receiver demodulation system and method |
| CN115118303B (en) * | 2022-05-19 | 2024-02-13 | 脉砥微电子(杭州)有限公司 | Battery-free multimode transceiver based on BLE protocol |
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| EP1415416B1 (en) * | 2001-08-09 | 2007-12-19 | Matsushita Electric Industrial Co., Ltd. | Dual mode radio communication apparatus |
| US7480344B2 (en) * | 2004-09-30 | 2009-01-20 | Broadcom Corporation | Architectural techniques for envelope and phase signal alignment in RF polar transmitters using power amplifier feedback |
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