CN102238762B - Multi-mode switching wireless receiving/transmitting device and multi-mode switching method thereof - Google Patents
Multi-mode switching wireless receiving/transmitting device and multi-mode switching method thereof Download PDFInfo
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- CN102238762B CN102238762B CN201010173458.9A CN201010173458A CN102238762B CN 102238762 B CN102238762 B CN 102238762B CN 201010173458 A CN201010173458 A CN 201010173458A CN 102238762 B CN102238762 B CN 102238762B
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Abstract
The invention discloses a multi-mode switching wireless receiving/transmitting device and a multi-mode switching method thereof, wherein the device has a wireless receiving/transmitting interface capable of flexibly switching among multiple frequency bands. The wireless receiving/transmitting device comprises a first radio-frequency receiving/transmitting circuit, a second radio-frequency receiving/transmitting circuit, a first frequency synthesizer, a second frequency synthesizer and a switching circuit, wherein the first radio-frequency receiving/transmitting circuit can receive/transmit radio-frequency signals of a first frequency band; the second radio-frequency receiving/transmitting circuit can receive/transmit radio-frequency signals of the first frequency band or second frequency band; the first frequency synthesizer and the second frequency synthesizer can generate a first carrier of the first frequency band and a second carrier of the second frequency band respectively; and the switching circuit can output the first carrier to the first radio-frequency receiving/transmitting circuit and determine to output either of the first carrier and the second carrier to the second radio-frequency receiving/transmitting circuit according to a control signal.
Description
Technical field
The present invention has about wireless device, wireless device and multi-mode switching method thereof that espespecially a kind of multimode is switched.
Background technology
Wireless network has been widely used on various network services and equipment, but due to the huge application demand of cost consideration and internet (Internet), most wireless network base station is only supported 2.4GHz frequency band on the market at present, be mainly used to carry out transfer of data, as browsing internet, send and receive e-mail, the application such as real-time communication.But, due to the service Fast Growth with wireless network transmissions video-audio data, make 2.4GHz frequency band originally not apply and use, also, because video-audio data need to be robbed the frequency range with 2.4GHz frequency band with data, services originally, cause the quality of audio-visual service not good.In order to address this problem, wireless network user just must use a 2.4GHz transmission circuit and a 5GHz transmission circuit to obtain respectively data, services and audio-visual service at 2.4GHz and 5GHz frequency band, to promote the quality of overall network service.
But, because user not always needs the data, services of 2.4GHz frequency band and the audio-visual service of 5GHz frequency band simultaneously, so in the time only needing data, services, in the network equipment, the interlock circuit of 5GHz just can leave unused; Otherwise, while only needing audio-visual service, be that the interlock circuit of 2.4GHz is in idle.So, idle circuit is just as the waste of resource.
Summary of the invention
In view of this, one of the present invention object, the wireless transmitter and the multi-mode switching method thereof that are to provide a kind of multimode to switch, it has the wireless receiving and dispatching interface that can flexibly switch at multiple frequency bands, to avoid prior art can cause the idle problem of circuit.
Another object of the present invention, the wireless transmitter and the multi-mode switching method thereof that provide a kind of multimode to switch are provided, its visual wireless user, in the frequency range demand of each frequency band, is flexibly switched wireless receiving and dispatching interface between each frequency band, to promote the quality of overall wireless service.
In one of the present invention embodiment, disclose the wireless transmitter that a kind of multimode is switched, comprise: the first radio-frequency (RF) transmit-receive circuit, in order to carry out the transmitting-receiving of radiofrequency signal of the first frequency band; The second radio-frequency (RF) transmit-receive circuit, in order to carry out the transmitting-receiving of radiofrequency signal of the first frequency band or the second frequency band; First frequency synthesizer, in order to produce the first carrier of the first frequency band; Second frequency synthesizer, in order to produce the second carrier wave of the second frequency band; Commutation circuit, is coupled to first frequency synthesizer and second frequency synthesizer, in order to first carrier is exported to the first radio-frequency (RF) transmit-receive circuit, and according to control signal, determines that one of output first carrier and second carrier wave are to the second radio-frequency (RF) transmit-receive circuit; And rf control unit, in order to produce control signal.
In another embodiment of the present invention, disclose a kind of multi-mode switching method for wireless transmitter, this wireless transmitter comprises the first wireless receiving and dispatching interface and the second wireless receiving and dispatching interface.This multi-mode switching method comprises: start the first wireless receiving and dispatching interface, wherein the first wireless receiving and dispatching interface operation is in the first frequency band; Start the second wireless receiving and dispatching interface, wherein the second wireless receiving and dispatching interface can operate in the first frequency band or the second frequency band; And according to wireless transmitter in the first frequency band and the second frequency band frequency range demand separately, the second wireless receiving and dispatching interface is switched between the first frequency band and the second frequency band.
In another embodiment of the present invention, disclose the wireless transmitter that a kind of multimode is switched, comprise: N radio-frequency (RF) transmit-receive circuit, each radio-frequency (RF) transmit-receive circuit can be carried out the transmitting-receiving of the radiofrequency signal of arbitrary frequency band of M frequency band, and wherein N and M are all greater than one; M frequency synthesizer, respectively in order to produce the respectively corresponding carrier wave of this M frequency band; Commutation circuit, is coupled to this M frequency synthesizer, in order to according to control signal, determine respectively this M corresponding carrier wave of output one of them to each this N radio-frequency (RF) transmit-receive circuit; And rf control unit, in order to produce control signal.
Brief description of the drawings
Fig. 1 is the calcspar of an embodiment of the wireless transmitter of multimode switching of the present invention.
Fig. 2 is an embodiment of display radio R-T unit 10 hardware structure that is applied to WLAN.
Fig. 3 is four kinds of operator schemes that show the wireless transmitter of Fig. 1.
Fig. 4 is the flow chart of an embodiment of the multi-mode switching method for wireless transmitter of the present invention.
Graphic figure number explanation
10: wireless transmitting and receiving device 11,12: radio-frequency (RF) transmit-receive circuit
111,121: antenna 13,14: frequency synthesizer
15: commutation circuit 151,152: multiplexer
16: rf control unit 161,162,163: control signal
20: wireless mould 21: HCI
22:MAC layer circuit 221,222:MAC circuit
23: physical layer circuit 231: baseband circuit
41～43: an embodiment flow process of the multi-mode switching method for wireless transmitter of the present invention
Embodiment
Numerous embodiment of the present invention is multi-mode radio R-T unit, and in order to flexibly to switch between multiple frequency bands, for convenience of description, the plurality of frequency band in numerous embodiment of the present invention is taking 2.4GHz and 5GHz as example, but is not subject to restriction of the present invention.In other words,, if there is other frequency band can supply application, the present invention also can be applicable to other frequency band.
Fig. 1 is the calcspar of an embodiment of the wireless transmitter of multimode switching of the present invention, and wherein, wireless transmitter 10 comprises radio-frequency (RF) transmit-receive circuit 11 and 12, frequency synthesizer 13 and 14, commutation circuit 15 and rf control unit 16.Radio-frequency (RF) transmit-receive circuit 11 and 12 can receive fundamental frequency signal from baseband circuit, is converted into the radiofrequency signal of the first frequency band or the second frequency band, sends out respectively via antenna 111 and 121; Radio-frequency (RF) transmit-receive circuit 11 and 12 also can receive respectively the radiofrequency signal of the first frequency band or the second frequency band via antenna 111 and 121, be converted into fundamental frequency signal, delivers to baseband circuit and carries out follow-up signal processing.Frequency synthesizer 13 and 14 can produce respectively the first carrier of the first frequency band and the second carrier wave of the second frequency band, delivers to commutation circuit 15.This frequency synthesizer can be realized by voltage controlled oscillator (VoltageControlled Oscillator, VCO).Commutation circuit 15 comprises multiplexer (multiplexer) 151 and 152, the control signal 161 that multiplexer 151 can produce according to rf control unit 16, determine that one of output first carrier and second carrier wave are to radio-frequency (RF) transmit-receive circuit 11, to produce the radiofrequency signal of corresponding frequency band; Multiplexer 152 can be according to control signal 161, determines that one of output first carrier and second carrier wave are to radio-frequency (RF) transmit-receive circuit 12, to produce the radiofrequency signal of corresponding frequency band.Therefore,, by control signal 161, can control radio-frequency (RF) transmit-receive circuit 11 and 12 and between the first frequency band and the second frequency band, switch separately.
Rf control unit 16 can be according to wireless transmitter 10 demand of frequency range separately on the first frequency band and the second frequency band, produce control signal 161, radio-frequency (RF) transmit-receive circuit 11 and 12 is dynamically switched between frequency band, to respond in time the frequency range demand of variation.For example, in the time that the first frequency band and the second frequency band all have frequency range demand, radio-frequency (RF) transmit-receive circuit 11 and 12 can be switched to respectively to the first frequency band and the second frequency band, but in the time that the frequency range demand of the first frequency band (or second frequency band) increases suddenly, radio-frequency (RF) transmit-receive circuit 11 and 12 temporarily all can be switched to the first frequency band (or second frequency band), the demand of uprushing to process this; Or, in the time that the first frequency band (or second frequency band) no longer includes frequency range demand, radio-frequency (RF) transmit-receive circuit 11 and 12 all can be switched to the second frequency band (or first frequency band), to promote signal transmitting and receiving speed and the quality of this frequency band.Therefore, rf control unit 16 can carry out flexible scheduling frequency range by control signal 161, to respond the frequency range demand of each frequency band variation.In addition, in the time that the first frequency band and the second frequency band respectively have multiple channels (carrier frequency of each channel is different), rf control unit 16 also can produce control signal 162 and 163, wherein control signal 162 is sent to frequency synthesizer 13, the carrier wave that produces arbitrary channel of the first frequency band to control it, and control signal 163 is sent to frequency synthesizer 14, the carrier wave that produces arbitrary channel of the second frequency band to control it.Therefore, rf control unit 16 can, in conjunction with control signal 161,162 and 163, will switch to which channel of which frequency band to control respectively radio-frequency (RF) transmit-receive circuit 11 and 12.
In a preferred embodiment, wireless transmitter 10 is applied in WLAN (WLAN).Fig. 2 is an embodiment of display radio R-T unit 10 hardware structure that is applied to WLAN, wherein, in wireless transmitter 10, be contained in wireless module 20, and wireless module 20 is connected with a main frame via HCI (host controller interface) 21.For example, wireless module 20 can be wireless network chip or the wireless network card of supporting IEEE 802.11 specifications, main frame can be personal computer or mobile computer, and HCI can be universal serial bus (USB) interface or high-speed peripheral assembly interconnect (PCI or PCI-E) interface.As shown in Figure 2, wireless module 20 also comprises medium access control (MAC) layer circuit 22 and physical layer (physical layer, PHY) circuit 23.Physical layer circuit 23, except comprising wireless transmitter 10, also comprises baseband circuit 231, in order to process fundamental frequency signal.MAC layer circuit 22 comprises MAC circuit 221 and 222, in order to carry out the access control of the first frequency band and the second frequency band, for example, MAC circuit 221 and 222 can send access control signal respectively, deliver to rf control unit 16 via baseband circuit 231, produce required control signal 161～163 to control it.
In current WLAN, conventional frequency band is 2.4GHz frequency band and 5GHz frequency band, if suppose, the first frequency band is 5GHz frequency band, the second frequency band is 2.4GHz frequency band, in this preferred embodiment, in the time that radio-frequency (RF) transmit-receive circuit 11 and 12 is switched respectively between the first frequency band and the second frequency band, can form altogether four kinds of operator scheme I～IV, as shown in Figure 3, wherein pattern I is that radio-frequency (RF) transmit-receive circuit 11 and 12 all operates in 5GHz frequency band, because IEEE 802.11n specification has the multiple input and output (Multiple-InputMultiple-Output of support, MIMO) function, therefore in the time that wireless transmitter 10 switches to pattern I, with regard to 5GHz frequency band, wireless transmitter 10 receives (2T2R) state in two transmittings two, but with regard to 2.4GHz frequency band, to enter (standby) state of awaiting orders, pattern II is that radio-frequency (RF) transmit-receive circuit 11 and 12 operates in respectively 5GHz and 2.4GHz frequency band, therefore in the time that wireless transmitter 10 switches to pattern II, with regard to 5GHz and 2.4GHz frequency band, wireless transmitter 10 all receives (1T1R) state in a transmitting one.In like manner, pattern III is that radio-frequency (RF) transmit-receive circuit 11 and 12 operates in respectively 2.4GHz and 5GHz frequency band, therefore in the time that wireless transmitter 10 switches to pattern III, at 5GHz and 2.4GHz frequency band all in 1T1R state; Pattern IV is that radio-frequency (RF) transmit-receive circuit 11 and 12 all operates in 2.4GHz frequency band,, in the time that wireless transmitter 10 switches to pattern IV, in 2T2R state, is therefore to enter armed state at 5GHz frequency band at 2.4GHz frequency band.Hence one can see that, if wireless transmitter 10 switches in 5GHz frequency band between each operating state (being 2T2R state, 1T1R state and armed state), and switch operating state accordingly in 2.4GHz frequency band simultaneously, vice versa.For example, if wireless transmitter 10 switches to 1T1R state from 2T2R state in 5GHz frequency band, the while, in 2.4GHz frequency band, must switch to 1T1R state from armed state; If switch to 2T2R state from armed state in 2.4GHz frequency band, the while, in 5GHz frequency band, must switch to armed state from 2T2R state; All the other situations can the rest may be inferred.
In this preferred embodiment, wireless transmitter 10 can be according to it demand of frequency range separately on the first frequency band and the second frequency band, between aforementioned four kinds of operator schemes, switch.As for the demand of frequency range separately of the first frequency band and the second frequency band, depending on the desired wireless service of user.Because user is in the time requiring wireless service, reach by carrying out relative application software often, therefore wireless transmitter 10 can be according to the application software of the selected execution of user, judges the demand of frequency range separately of the first frequency band and the second frequency band.In the example of aforementioned WLAN, data, services is used 2.4GHz frequency band more, and audio-visual service is used 5GHz frequency band.Data, services mainly comprises Internet service, as web page browsing, E-mail receiver/send, real-time communication etc., wireless transmitter 10 can be used as client terminal device, connects online with internet access point (access point), obtains Internet service.Aspect audio-visual service, that wireless transmitter 10 is considered as to software access point (softwareAP), provide video-audio data to play to other computer or consumption electronic products (consumer electronics, as TV or projector etc.) with wireless transmission method.Therefore, according to the use situation of data, services and audio-visual service, can flexibly dynamically switch the operator scheme of wireless transmitter 10, for example, when user requires with 2.4GHz online (also referred to as " line ") to internet to obtain data, services, but while thering is no the audio-visual demand for services of 5GHz, wireless transmitter 10 can be switched to operator scheme IV (referring to Fig. 3), under 2T2R state, surf the Net, to strengthen the quality of data, services; Afterwards, in the time that user also wants to use audio-visual service, wireless transmitter 10 can be switched to operator scheme II or operator scheme III, data, services and audio-visual service are respectively carried out at 1T1R state.Again for example, if video-audio data amount is very large or will improve audio-visual service quality, wireless transmitter 10 can be switched to operator scheme I, carry out transmitting audio-video data with 2T2R state, if now there is online demand simultaneously, because the data information received and dispatched of online is often intermittent (during as browsing page, after page download completes, until user clicks before next webpage, conventionally do not need to receive again data information), so wireless transmitter 10 only need be in the time having data information to receive, or there is no data information but having man page (as the beacon of access point (beacon), in order to maintain on line state) will receive time, switch to operator scheme II or III, and after data information or man page receive switchback operator scheme I, can guarantee the quality of audio-visual service simultaneously, maintain again the on line state of data, services.
In addition, wireless transmitter 10 also can, according to service quality (QoS) requirement of frequency bandwidth characteristics and wireless service itself, be adjusted the frequency range demand to the first frequency band and the second frequency band.For example, the interference source of 2.4GHz frequency band is more, therefore for the wireless service that needs stability or real-time (real-time), even if required data throughput (throughput) is not high, be all classified to the frequency range demand of 5GHz.
Preferably, the first frequency band has corresponding priority with the second frequency band frequency range demand separately, and wireless transmitter 10 can more different frequency range demands priority, carry out switching operation modes, for example, rf control unit 16 can, according to the height of priority, produce control signal 161, reach the effect of switching operation modes, so that the high frequency range demand priority of priority is processed.The wireless service that this priority can provide according to each frequency band is set, and for example, 5GHz frequency band and 2.4GHz frequency band provide respectively audio-visual service and data, services, so be the frequency range demand higher than 2.4GHz frequency band by the priority level initializing of the frequency range demand of 5GHz frequency band.In addition, the time point that this priority also can produce according to frequency range demand was first set afterwards, for example, if the frequency range demand of 2.4GHz frequency band produces prior to 5GHz frequency band, be the frequency range demand higher than 5GHz frequency band by the priority level initializing of the frequency range demand of this 2.4GHz frequency band.
Preferably, wireless transmitter 10 can be carried out the flow control (flow control) of the first frequency band and the second frequency band.For example, wireless transmitter 10 (or wireless module 20) can preset 2.4GHz frequency band and 5GHz frequency band for service time of Radio Resource (being radio-frequency (RF) transmit-receive circuit 11 and 12) than or data throughput ratio, such as being made as 1: 1, represent that 2.4GHz frequency band can use identical time span with 5GHz frequency band separately for Radio Resource, or produce same data throughput.So, wireless transmitter 10 just can be controlled its data traffic at the first frequency band and the second frequency band.
The embodiment of Fig. 1 may extend to the situation with three or more radio-frequency (RF) transmit-receive circuit and frequency band, for example, wireless transmitter can comprise N radio-frequency (RF) transmit-receive circuit, a M frequency synthesizer, a commutation circuit and a rf control unit, and N and M are all greater than one (N=M=2 is wireless transmitter 10).Each radio-frequency (RF) transmit-receive circuit can be carried out the transmitting-receiving of the radiofrequency signal of arbitrary frequency band of M frequency band, this M frequency synthesizer is respectively in order to produce the corresponding carrier wave of this M frequency band, and the control signal that this commutation circuit can produce according to this rf control unit, choose corresponding frequency synthesizer and export, think that each radio-frequency (RF) transmit-receive circuit provides required separately carrier wave.Therefore, this wireless transmitter can have M × N kind operator scheme, and can carry out switching operation modes by control signal.
Fig. 4 is the flow chart of an embodiment of the multi-mode switching method for wireless transmitter of the present invention.In this embodiment, wireless transmitter comprises the first wireless receiving and dispatching interface and the second wireless receiving and dispatching interface, can operate in separately the first frequency band or the second frequency band.In the time that this embodiment is applied to the wireless transmitter 10 of Fig. 1, the first wireless receiving and dispatching interface is provided by radio-frequency (RF) transmit-receive circuit 11 and antenna 111, and the second wireless receiving and dispatching interface is provided by radio-frequency (RF) transmit-receive circuit 12 and antenna 121.In step 41, start the first wireless receiving and dispatching interface, make it operate in the first frequency band or the second frequency band; In step 42, start the second wireless receiving and dispatching interface, make it operate in the first frequency band or the second frequency band.Therefore, according to the frequency band (the first or second frequency band) at first and second wireless receiving and dispatching interface place, wireless transmitter capable of being combined go out four kinds of operator schemes as shown in Figure 3, wherein first and second frequency band is respectively 5GHz and 2.4GHz frequency band.In step 43,, in the first frequency band and the second frequency band frequency range demand separately the first wireless receiving and dispatching interface and the second wireless receiving and dispatching interface are switched on respectively between first and second frequency band according to wireless transmitter.
Preferably, if wireless transmitter has the multiple input and output (MIMO) of support function, for example, when wireless transmitter and the first wireless device (or first wireless network) that operates in the first frequency band (being 5GHz) set up first when online, can be in online process of establishing, inform that the other side oneself is for having the transmittability of 2T2R, the first online can switching between 2T2R, 1T1R and three kinds of operating states such as await orders like this, now, 1T1R and armed state can be considered two kinds of power down modes in various degree.Similarly, for example, when wireless transmitter and the second wireless device (or second wireless network) that operates in the second frequency band (being 2.4GHz) set up second when online, also can be in online process of establishing, inform that the other side oneself is for having the transmittability of 2T2R, second onlinely also can switch between 2T2R, 1T1R and three kinds of operating states such as await orders.Certainly, the switching of first and second online operating state need be worked in coordination, carry out simultaneously, for example, when first online while switching to 1T1R state from 2T2R state, the second online need switch to 1T1R state from armed state simultaneously, with regard to now online with regard to first, first wireless device can think that wireless transmitter cuts out one of them wireless receiving and dispatching interface with power saving, but in fact, and wireless transmitter is that this wireless receiving and dispatching interface is diverted to second online; The switching situation of other first and second online operating state, can the rest may be inferred.Therefore, by use can elasticity switch operating frequency band wireless receiving and dispatching interface, wireless transmitter only utilizes two wireless receiving and dispatching interfaces, just can set up respectively the online of two high-transmission abilities with 2T2R.
In other words, in an embodiment of the present invention, wireless transmitter is to comprise N radio-frequency (RF) transmit-receive circuit, can set up the online of a N transmitting N reception and set up at the second frequency band online that a N transmitting N receives at the first frequency band.Taking Fig. 2 as example, wireless transmitter 10 comprises 2 radio-frequency (RF) transmit-receive circuit, can set up the online of a 2T2R and set up the online of a 2T2R at the second frequency band at the first frequency band.Certainly, in another embodiment, wireless transmitter only comprises 1 radio-frequency (RF) transmit-receive circuit, sets up the online of a 1T1R and sets up the online of a 1T1R at the second frequency band at the first frequency band, this wireless transmitter flexibly switches between each frequency band, to promote the quality of overall wireless service.
Preferably, step 43, according to the first frequency band and the corresponding priority height of each other frequency range demand of the second frequency band, switches on first and second wireless receiving and dispatching interface respectively between first and second frequency band.For example, can be the frequency range demand higher than the second frequency band by the priority level initializing of the frequency range demand of the first frequency band; Again for example, in the first frequency band and the second frequency band frequency range demand separately, can be the frequency range demand higher than rear generation by the priority level initializing of the frequency range demand first producing.
The above is to utilize preferred embodiment to describe the present invention in detail, but not limits the scope of the invention.Every those of ordinary skill in the art all can understand, and suitably carries out change and adjustment slightly, will not lose main idea of the present invention place, does not also depart from the spirit and scope of the present invention.
Claims (13)
1. a wireless transmitter, comprises:
One first radio-frequency (RF) transmit-receive circuit, in order to carry out the transmitting-receiving of radiofrequency signal of one first frequency band;
One second radio-frequency (RF) transmit-receive circuit, in order to carry out the transmitting-receiving of radiofrequency signal of described the first frequency band or one second frequency band;
One first frequency synthesizer, in order to produce a first carrier of described the first frequency band;
One second frequency synthesizer, in order to produce one second carrier wave of described the second frequency band;
One commutation circuit, be coupled to described first frequency synthesizer and described second frequency synthesizer, in order to described first carrier is exported to described the first radio-frequency (RF) transmit-receive circuit, and according to a control signal, determine that one of the described first carrier of output and described second carrier wave are to described the second radio-frequency (RF) transmit-receive circuit, make described the first radio-frequency (RF) transmit-receive circuit produce the radiofrequency signal of described the first frequency band, described the second radio-frequency (RF) transmit-receive circuit produces the radiofrequency signal of described the first frequency band or the radiofrequency signal of described the second frequency band; And
One rf control unit, in order to produce described control signal,
Wherein, described the first radio-frequency (RF) transmit-receive circuit can also be carried out the transmitting-receiving of the radiofrequency signal of described the second frequency band; Described commutation circuit, also according to described control signal, determines that one of the described first carrier of output and described second carrier wave are to described the first radio-frequency (RF) transmit-receive circuit.
2. wireless transmitter according to claim 1, wherein, described rf control unit, according to described the first frequency band and described the second frequency band frequency range demand separately, produces described control signal.
3. wireless transmitter according to claim 2, wherein, described rf control unit, according to described the first frequency band and the corresponding priority height of described the second frequency band described frequency range demand separately, produces described control signal.
4. wireless transmitter according to claim 3, wherein, the priority of the described frequency range demand of described the first frequency band is higher than the described frequency range demand of described the second frequency band.
5. wireless transmitter according to claim 3, wherein, in described the first frequency band and described the second frequency band described frequency range demand separately, the priority of the frequency range demand first producing is higher than the frequency range demand of rear generation.
6. for a multi-mode switching method for a wireless transmitter, described wireless transmitter comprises one first wireless receiving and dispatching interface and one second wireless receiving and dispatching interface, and described multi-mode switching method comprises:
Start described the first wireless receiving and dispatching interface, wherein said the first wireless receiving and dispatching interface operation is in one first frequency band;
Start described the second wireless receiving and dispatching interface, wherein said the second wireless receiving and dispatching interface can operate in described the first frequency band or one second frequency band;
Produce a first carrier of described the first frequency band;
Produce one second carrier wave of described the second frequency band;
, in described the first frequency band and described the second frequency band frequency range demand separately described the second wireless receiving and dispatching interface is switched between described the first frequency band and described the second frequency band according to described wireless transmitter; Wherein, described the first wireless receiving and dispatching interface produces the radiofrequency signal of the first frequency band based on described first carrier, described the second wireless receiving and dispatching interface produces respectively the radiofrequency signal of the first frequency band or the radiofrequency signal of the second frequency band based on described first carrier or described the second carrier wave
Wherein, described the first wireless receiving and dispatching interface can also operate in described the second frequency band, and described multi-mode switching method further comprises:
, in described the first frequency band and described the second frequency band described frequency range demand separately described the first wireless receiving and dispatching interface is switched between described the first frequency band and described the second frequency band according to described wireless transmitter.
7. multi-mode switching method according to claim 6, wherein, in the time that described wireless transmitter is supported multiple input and output, described changing method further comprises:
Respectively in described the first frequency band and described the second frequency band, described wireless transmitter is switched between two transmitting two accepting states, transmitting one accepting state and armed state, wherein, the state in described the first frequency band switches corresponding to the state switching in described the second frequency band.
8. multi-mode switching method according to claim 6, wherein, according to described the first frequency band and the corresponding priority height of described the second frequency band described frequency range demand separately, described the first wireless receiving and dispatching interface and described the second wireless receiving and dispatching interface are switched on respectively between described the first frequency band and described the second frequency band.
9. multi-mode switching method according to claim 8, wherein, the priority of the described frequency range demand of described the first frequency band is higher than the described frequency range demand of described the second frequency band.
10. multi-mode switching method according to claim 8, wherein, in described the first frequency band and described the second frequency band described frequency range demand separately, the priority of the frequency range demand first producing is higher than the frequency range demand of rear generation.
11. 1 kinds of wireless transmitters, comprise:
N radio-frequency (RF) transmit-receive circuit, each radio-frequency (RF) transmit-receive circuit can be carried out the transmitting-receiving of the radiofrequency signal of arbitrary frequency band of M frequency band, and wherein N is that positive integer and N and M are all greater than one;
M frequency synthesizer, respectively in order to produce a corresponding carrier wave in each described M frequency band;
One commutation circuit, be coupled to a described M frequency synthesizer, in order to according to a control signal, determine respectively M described corresponding carrier wave of output one of them to a described N radio-frequency (RF) transmit-receive circuit, make a described N radio-frequency (RF) transmit-receive circuit produce one of them radiofrequency signal of a described M frequency band; And
One rf control unit, in order to produce described control signal.
12. wireless transmitters according to claim 11, also comprise:
One medium access control circuit, for controlling described rf control unit to carry out the access control to a described M frequency band.
13. 1 kinds of wireless transmitters, comprise:
N radio-frequency (RF) transmit-receive circuit, each radio-frequency (RF) transmit-receive circuit can be carried out the transmitting-receiving of the radiofrequency signal of arbitrary frequency band of M frequency band, and wherein N is that positive integer and N and M are all greater than one;
Wherein, described wireless transmitter is set up respectively online that a N transmitting N receives in a described M frequency band;
M frequency synthesizer, respectively in order to produce a corresponding carrier wave in each described M frequency band;
One commutation circuit, be coupled to a described M frequency synthesizer, in order to according to a control signal, determine respectively M corresponding carrier wave of output one of them to a described N radio-frequency (RF) transmit-receive circuit, make a described N radio-frequency (RF) transmit-receive circuit produce one of them radiofrequency signal of a described M frequency band.
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| WO2004032283A1 (en) * | 2002-10-07 | 2004-04-15 | Matsushita Electric Industrial Co., Ltd. | Antenna device |
| CN101588189A (en) * | 2008-05-20 | 2009-11-25 | 英华达股份有限公司 | Handheld equipment capable of switching signal receiving modes |
| CN101593285A (en) * | 2008-05-30 | 2009-12-02 | 索尼株式会社 | Answering machine, inquisitor and communicator |
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| JP4487695B2 (en) * | 2004-09-07 | 2010-06-23 | 日本電気株式会社 | Multiband radio |
| CN1917685A (en) * | 2005-08-17 | 2007-02-21 | 三星电子株式会社 | Multi-mode-multi-band wireless transceiver |
| CN101431341B (en) * | 2007-11-06 | 2013-01-30 | 瑞昱半导体股份有限公司 | Signal processing circuit |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004032283A1 (en) * | 2002-10-07 | 2004-04-15 | Matsushita Electric Industrial Co., Ltd. | Antenna device |
| CN101588189A (en) * | 2008-05-20 | 2009-11-25 | 英华达股份有限公司 | Handheld equipment capable of switching signal receiving modes |
| CN101593285A (en) * | 2008-05-30 | 2009-12-02 | 索尼株式会社 | Answering machine, inquisitor and communicator |
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