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CN101309087A - Wireless terminal and sub frequency band sharing method - Google Patents

️Wed Nov 19 2008

Summary of the invention

The technical problem that the embodiment of the invention will solve provides wireless terminal and sub frequency band sharing method thereof, makes wireless terminal can realize the shared of two sub frequency bands.

For solving the problems of the technologies described above, wireless terminal provided by the present invention and sub frequency band sharing method embodiment thereof are achieved through the following technical solutions:

The embodiment of the invention provides a kind of wireless terminal, and this terminal comprises: the device of controller, radio frequency selector, sub frequency band one correspondence and the device of sub frequency band two correspondences, wherein:

Controller is used to judge whether the current working frequency that sets is positioned at default sub frequency band one, and selects according to judged result control radio frequency selector;

Radio frequency selector when the current working frequency of setting is positioned at described sub frequency band one, is selected the device to described sub frequency band one correspondence, comprises first duplexer of sub frequency band one correspondence; When the current working frequency of setting was not in described sub frequency band one, choosing comprised second duplexer of sub frequency band two correspondences to the device of described sub frequency band two correspondences.

The embodiment of the invention also provides another kind of wireless terminal, and this terminal comprises: the device of controller, radio frequency selector, sub frequency band one correspondence and the device of sub frequency band two correspondences, wherein:

Controller, be used to judge that whether the current working frequency that sets is less than default judgement frequency, and select according to judged result control radio frequency selector, described judgement frequency is described sub frequency band one and described sub frequency band two overlapping frequency or the frequency between described sub frequency band one and described sub frequency band two;

Radio frequency selector, when the current working frequency of setting during less than described judgement frequency, choosing comprises first duplexer of sub frequency band one correspondence to the device of described sub frequency band one correspondence; When the current working frequency of setting during more than or equal to described judgement frequency, choosing comprises second duplexer of sub frequency band two correspondences to the device of described sub frequency band two correspondences.

The embodiment of the invention also provides a kind of sub frequency band sharing method of wireless terminal, and this method comprises:

Judge whether the current working frequency that sets is positioned at default sub frequency band one;

If, then control the device of radio frequency selector choosing to described sub frequency band one correspondence, comprise first duplexer of sub frequency band one correspondence, make the radio-frequency channel of wireless terminal be set to described sub frequency band one;

If not, then control the device of radio frequency selector choosing, comprise second duplexer of sub frequency band two correspondences, make the radio-frequency channel of wireless terminal be set to described sub frequency band two to described sub frequency band two correspondences.

The embodiment of the invention also provides the sub frequency band sharing method of another kind of wireless terminal, and this method comprises:

Whether judge the current working frequency set less than default judgement frequency, described judgement frequency is described sub frequency band one with the overlapping frequency of described sub frequency band two or is frequency between sub frequency band one and the sub frequency band two;

If, then control the device of radio frequency selector choosing to described sub frequency band one correspondence, comprise first duplexer of sub frequency band one correspondence, make the wireless terminal radio-frequency channel be set to described sub frequency band one;

A technical scheme from the embodiment of the invention as can be seen, whether the current working frequency that sets by judgement is positioned at default sub frequency band one, and when being positioned at described sub frequency band one, the choosing of control radio frequency selector is to the device of described sub frequency band one correspondence, first duplexer that comprises sub frequency band one correspondence, make the radio-frequency channel of wireless terminal be set to described sub frequency band one, if the current working frequency that sets is not in described sub frequency band one, then control the device of radio frequency selector choosing to described sub frequency band two correspondences, second duplexer that comprises sub frequency band two correspondences, make the radio-frequency channel of wireless terminal be set to described sub frequency band two, thereby make that described wireless terminal can be according to the current working frequency that will set, the radio-frequency channel of wireless terminal is set to sub frequency band one or sub frequency band two, make that described wireless terminal can shared two sub frequency bands, thereby realize the frequency range expansion.

Another technical scheme from the embodiment of the invention as can be seen, whether the current working frequency that sets by judgement is less than default judgement frequency, described judgement frequency is the overlapping frequency of described sub frequency band one and described sub frequency band two or is the frequency between sub frequency band one and the sub frequency band two, and the time less than described judgement frequency, the choosing of control radio frequency selector makes the wireless terminal radio-frequency channel be set to described sub frequency band one to the device of described sub frequency band one correspondence; More than or equal to described judgement frequency the time, the choosing of control radio frequency selector is to the device of described sub frequency band two correspondences, make the wireless terminal radio channel be set to described sub frequency band two, make described wireless terminal realize that sub frequency band one and sub frequency band two are shared, and, because described judgement frequency can be the overlapping frequency of described sub frequency band one and described sub frequency band two, also can be the frequency between sub frequency band one and the sub frequency band two, therefore can realize any two sub frequency band sharings, realize the frequency range expansion.

Embodiment

The embodiment of the invention provides wireless terminal and sub frequency band sharing method thereof, is used to realize the shared of two sub frequency bands of wireless terminal, realizes the frequency range expansion.

For the purpose, technical scheme and the advantage that make the embodiment of the invention more cheer and bright, below with reference to accompanying drawing, the embodiment of the invention is described in detail:

With reference to Fig. 2, be one structural representation of wireless terminal in the embodiment of the invention, this wireless terminal comprises:

controller

201,

radio frequency selector

202, the

device

204 of the

device

203 of sub frequency band one correspondence and sub frequency band two correspondences, wherein:

Controller

201 is used to judge whether the current working frequency that sets is positioned at default sub frequency band one, and selects according to judged result control

radio frequency selector

202;

Radio frequency selector

202 when the current working frequency of setting is positioned at described sub frequency band one, is selected the

device

203 to described sub frequency band one correspondence, comprises first duplexer of sub frequency band one correspondence; When described current working frequency was not in described sub frequency band one, choosing comprised second duplexer of sub frequency band two correspondences to the

device

204 of described sub frequency band two correspondences.

With reference to Fig. 3, be sub frequency band sharing method one flow chart of wireless terminal in the embodiment of the invention, below be elaborated by concrete steps:

301, judge whether the current working frequency that sets is positioned at default sub frequency band one, if then execution in

step

302; If not, execution in

step

303 then;

302, then control the device of radio frequency selector choosing, comprise first duplexer of sub frequency band one correspondence, make the radio-frequency channel of wireless terminal be set to described sub frequency band one to described sub frequency band one correspondence;

Concrete, can be by the control of general I/O (GPIO) control line radio frequency selector, for example radio-frequency (RF) switch of wireless terminal.

303, the choosing of control radio frequency selector comprises second duplexer of sub frequency band two correspondences to the device of described sub frequency band two correspondences, makes the radio-frequency channel of wireless terminal be set to described sub frequency band two.

Like this, when wireless terminal judges that the working frequency points set is a frequency in the sub frequency band one, select the radio-frequency channel of one section of sub frequency band by GPIO mouth control radio frequency selector such as radio-frequency (RF) switch, when the working frequency points of judge setting when wireless terminal is a frequency in the sub frequency band two, select the radio-frequency channel of two sections of sub frequency bands by GPIO mouth control radio frequency selector such as radio-frequency (RF) switch, like this, mode by the switch selection, make wireless terminal can satisfy all properties index of the sub frequency band one and the

sub frequency band

2 of 450M frequency range simultaneously, realize the frequency range expansion.

As seen, this wireless terminal judges by

controller

201 whether the current working frequency that sets is positioned at default sub frequency band one, and when described current working frequency is positioned at described sub frequency band one, 202 choosings of control radio frequency selector are to the

device

203 of described sub frequency band one correspondence, first duplexer comprising sub frequency band one correspondence, when described current working frequency is not in described sub frequency band one, 202 choosings of control radio frequency selector are to the

device

204 of described sub frequency band two correspondences, second duplexer comprising sub frequency band one correspondence, thereby described wireless terminal shared two sub frequency bands simultaneously, realize that the frequency range expansion is with shared.

The embodiment of the invention also provides another kind of wireless terminal, can be used to support any two sub frequency bands, no matter whether these two sub frequency bands have overlapping frequency, with reference to Fig. 4, be two structural representations of wireless terminal in the embodiment of the invention, this wireless terminal comprises: the

device

403 of

controller

401,

radio frequency selector

402, sub frequency band one correspondence and the

device

404 of sub frequency band two correspondences, wherein:

Controller

401, be used to judge that whether the current working frequency that sets is less than default judgement frequency, and select according to judged result control

radio frequency selector

402, described judgement frequency is a described sub frequency band one and described sub frequency band two overlapping frequency or the frequency between described sub frequency band one and described sub frequency band two;

Radio frequency selector

402, when the current working frequency of setting during less than described judgement frequency, choosing comprises first duplexer of sub frequency band one correspondence to the

device

403 of described sub frequency band one correspondence; When the current working frequency of setting during more than or equal to described judgement frequency, choosing comprises second duplexer of sub frequency band two correspondences to the

device

404 of described sub frequency band two correspondences.

With reference to Fig. 5, be sub frequency band sharing method two flow charts of wireless terminal in the embodiment of the invention, below describe the method for wireless terminal two shared any two sub frequency bands in detail by concrete steps:

501, judge that whether the current working frequency set is less than default judgement frequency, described judgement frequency is the overlapping frequency of described sub frequency band one and described sub frequency band two or is the frequency between sub frequency band one and the sub frequency band two, if then execution in

step

502; If not, execution in

step

503 then;

502, the choosing of control radio frequency selector comprises first duplexer of sub frequency band one correspondence to the device of described sub frequency band one correspondence, makes the wireless terminal radio-frequency channel be set to described sub frequency band one;

503, the choosing of control radio frequency selector comprises second duplexer of sub frequency band two correspondences to the device of described sub frequency band two correspondences, makes the radio-frequency channel of wireless terminal be set to described sub frequency band two.

For example, A section in the 450M frequency range is overlapped in frequency range 126～168 with son section C, the frequency 150 that controller can be set between frequency range 126～168 is the judgement frequency, and the working frequency points that sets when wireless terminal is less than 150 the time, select the pairing device of frequency range C section, comprise the first corresponding duplexer of frequency range C section, the working frequency points that sets when wireless terminal is more than or equal to 150 the time, select the pairing device of frequency range A section, comprise the second corresponding duplexer of frequency range A section, at this moment, sub frequency band one corresponding C section, sub frequency band two corresponding A section.

Certainly, if sub frequency band one does not have overlapping frequency with sub frequency band two, then set judgement frequency be between sub frequency band one and the sub frequency band two any one frequency can, illustrated in greater detail no longer.

Wherein, radio frequency selector specifically can be a radio-frequency (RF) switch, below by the be elaborated application of above-mentioned two kinds of wireless terminals of several specific embodiments:

With reference to Fig. 6, be three structural representations of wireless terminal in the embodiment of the invention, in this wireless terminal, by increasing radio-frequency (RF) switch at radio-frequency front-end, select the passage of two set in 450M frequency range sub frequency bands by radio-frequency (RF) switch, make this wireless terminal support these selected two sub frequency bands simultaneously, be made as sub frequency band one and sub frequency band two, in this wireless terminal, the end of radio-frequency (RF) switch K2 is connected with radiofrequency launcher (RF Tx Processing Unit) 601, the other end is connected with first transmit band pass filter (

Block

1 Tx BPF) 602 on the one hand, be connected with second transmit band pass filter (

Block

2 TxBPF) 603 on the other hand, the other end of Block1 Tx BPF 602 is connected with the input of first power amplifier (PA) 604, the output of

604 is connected with first duplexer (

Block

1 Duplexer) 606, and the other end of

Block

2 Tx BPF 603 is connected with second duplexer (

Block

2 Duplexer) 608 by second power amplifier (PA) 605, and the other end of

Block

Duplexer

606 is connected with

antenna

607 by radio-frequency (RF) switch K1; Second duplexer (

Block

2 Duplexer), 608 1 ends are connected with

antenna

607 by radio-frequency (RF) switch K1, the end of radio-frequency (RF) switch K3 is connected with

Block

Duplexer

606 on the one hand, be connected with

Block

Duplexer

608 on the other hand, the other end is connected with the input of low noise amplifier (LNA) 609, the end of radio-frequency (RF) switch K4 is connected with the output of LNA 609, the other end is connected with first reception bandpass filter (

Block

1 Rx BPF) 610 on the one hand, be connected with second reception bandpass filter (

Block

2 Rx BPF) 611 on the other hand,

Block

1 Rx BPF 610 and

Block

2 Rx BPF611 pass through radio-frequency (RF) switch K5 respectively, K6 is connected with radio frequency receiver (RF Rx Processing Unit) 612.

Wherein,

Block1 Tx BPF

602, expression covers the band pass filter of

sub section

1 the tranmitting frequency of Band Class 5; Block2 Tx BPF603, expression covers the band pass filter of

sub section

2 the tranmitting frequency of Band Class 5;

Block1 Rx BPF

610, expression covers the band pass filter of

sub section

1 the receive frequency of Band Class 5;

Block2 Rx BPF

611, expression covers the band pass filter of

sub section

2 the receive frequency of Band Class 5;

Block

1 Duplexer, the duplexer of the

son section

1 of expression Band Class 5; Block 2Duplexer: the duplexer of the

son section

2 of expression Band Class 5; And Block1 and Block2 represent the norator section among the CDMABand Class 5.

So the radio frequency selector in this wireless terminal comprises: an end is connected with

antenna

607, the radio-frequency (RF) switch K1 that the other end and

first duplexer

606 are connected with

second duplexer

608; One end is connected with

radiofrequency launcher

601, the radio-frequency (RF) switch K2 that the other end and first transmit

band pass filter

602 are connected with second transmit

band pass filter

603, described first transmit

band pass filter

602 is connected with

first duplexer

606 by

first power amplifier

604, constitute the radio-frequency channel of frequency range one, described second transmit

band pass filter

603 is connected with

second duplexer

608 by

second power amplifier

605, constitutes the radio-frequency channel of frequency range two; One end is connected with low noise amplifier (LNA) 609 inputs, the radio-frequency (RF) switch K3 that the other end and

first duplexer

606 are connected with

second duplexer

608; One end is connected with the output of low noise amplifier (LNA) 609, the radio-frequency (RF) switch K4 that the other end is connected with the input of first

reception bandpass filter

610 and second

reception bandpass filter

611; One end is connected with

radio frequency receiver

612, the radio-frequency (RF) switch K5 that first output of the other end and first

reception bandpass filter

610 and first output of second

reception bandpass filter

611 are connected; One end is connected with

radio frequency receiver

612, the radio-frequency (RF) switch K6 that second output of the other end and first

reception bandpass filter

610 and second output of second

reception bandpass filter

611 are connected.

Because there are two kinds of situations in the relation of any two sub frequency bands; A kind of is that two sub frequency bands exist frequency overlapping; Another kind is that two sub frequency bands do not exist frequency overlapping, below describes respectively:

Have the overlapping Block of frequency the channel selecting mode (suppose Block1 frequency range frequency ratio frequency range Block2 height a bit):

Judging the current frequency that will work when wireless terminal is during at the overlapping frequency of Block1, Block2 section, when the Block1 that sets less than oneself when this working frequency points, the judgement frequency of Block2 overlapping region, wireless terminal selects the radio-frequency channel of Block1 section to transmit and receive signal by radio-frequency (RF) switch K1-K6; When this working frequency points during more than or equal to described judgement frequency, wireless terminal selects the radio-frequency channel of Block2 section to transmit and receive signal by radio-frequency (RF) switch K1-K6;

Judging the current frequency that will work when wireless terminal is during at the private frequency of Block1 section, because therefore the private frequency of Block1 section selects the radio-frequency channel work of Block1 section less than overlapping frequency by GPIO mouth control radio-frequency (RF) switch K1-K6;

Judging the current frequency that will work when wireless terminal is during at the private frequency of Block2 section, because the private frequency of Block2 section is then selected the radio-frequency channel work of Block2 section all greater than overlapping frequency by GPIO mouth control radio-frequency (RF) switch K1-K6.

For the channel selecting mode that does not have the overlapping Block of frequency:

When wireless terminal judges that the current frequency that will work is a frequency at Block1, select the radio-frequency channel work of Block1 section by GPIO mouth control radio-frequency (RF) switch K1-K6;

When wireless terminal judges that the current frequency that will work is a frequency at Block2, select the radio-frequency channel of Block2 section by GPIO mouth control radio-frequency (RF) switch K1-K6.

When selecting for the passage that does not have the overlapping Block of frequency, also can adopt and the similar method of channel selecting that the overlapping Block of frequency is arranged, difference is that set judgement frequency is the frequency between Block1 and Block, no longer describes in detail.

By the mode that switch is selected, wireless terminal just can satisfy the

Block

1 of Band Class 5, all properties index of

Block

2 son sections simultaneously.

In summary, overlapping frequency and situation are arranged and do not have the situation of overlapping frequency for sub frequency band, the radio frequency selector part is as broad as long, and possible difference only is the controller part (the controller part of the wireless terminal that do not draw among Fig. 6) of wireless terminal.

With reference to Fig. 7, be wireless terminal embodiment four structural representations in the embodiment of the invention, this wireless terminal can be supported 450M band A section and C section simultaneously, wherein: band pass filter

AC Tx BPF

702 1 ends are connected with radiofrequency launcher (RF Tx processing Unit) 701, the other end is connected with the input of

703, radio-frequency (RF) switch K2 one end is connected with the output of

703, the other end is connected with

Block ADuplexer

704 on the one hand, be connected with

Block C Duplexer

706 on the other hand, the other end of Block A Duplexer704 is connected with

antenna

705 by radio-frequency (RF) switch K1,

antenna

705 also is connected with

Block C Duplexer

706 by radio-frequency (RF) switch K1, the end of radio-frequency (RF) switch K3 is connected with

Block A Duplexer

704 on the one hand, be connected with

Block C Duplexer

706 on the other hand, the other end is connected with the input of

LNA

707, and the output of

LNA

707 is connected with radio frequency receiver (RF Rx processing Unit) 709 by

AC Rx BPF

708.

Wherein,

AC Tx BPF

702, the band pass filter of the Block A of expression covering Band Class 5 and the receive frequency of Block C;

AC Tx BPF

708, the band pass filter of the BlockA of expression covering Band Class 5 and the receive frequency of BlockC;

Block A Duplexer

704, the duplexer of the Block A of expression Band Class 5;

Block C Duplexer

706, the duplexer of the Block C of expression Band Class 5.

The channel selecting mode of this wireless terminal is as follows:

Judging the current frequency that will work when wireless terminal is during at the overlapping frequency of A, C section, and when this working frequency points during more than or equal to the own frequency of setting in A, C section overlapping region, wireless terminal is just controlled the radio-frequency channel of radio-frequency (RF) switch K1-K3 selection A section.When that overlapping frequency that this operating frequency is set less than oneself, wireless terminal is just controlled the radio-frequency channel that radio-frequency (RF) switch K1-K3 selects the C section.Are the overlapping available frequencies of A, C such as 126 frequencies to 168 frequencies, therefore we select any one frequency in 126 to 168, suppose it is 150, so more than or equal to the radio-frequency channel of just using the A section of 150 frequencies, less than the radio-frequency channel of just using the C section of 150 frequencies;

Judging the current frequency that will work when wireless terminal is during at the private frequency of A section, because the private frequency of A section all is greater than overlapping frequency, therefore selects the radio-frequency channel of A section by GPIO mouth control radio-frequency (RF) switch K1-K3;

Judging the current frequency that will work when wireless terminal is during at the private frequency of C section, because the private frequency of C section all is less than overlapping frequency, then selects the radio-frequency channel of C section by GPIO mouth control radio-frequency (RF) switch K1-K3.

By the mode that switch is selected, wireless terminal just can satisfy all properties index of Block A, the Block C section of Band Class 5 simultaneously.

Be understandable that, the structure of described support 450M band A, C section shared wireless terminal, with reference to Fig. 7, also be applicable to other any two sub frequency bands, no matter whether these two sub frequency bands have lap, have the difference part of lap and zero lap part only to be the controller part (the controller part of the wireless terminal that do not draw among Fig. 7) of wireless terminal for two sub frequency bands, concrete processing method can be referring to aforementioned wireless terminal sub frequency band sharing method one and method two.

In the wireless terminal that present embodiment is introduced, radio frequency selector comprises:

One end is connected with antenna, the first radio-frequency (RF) switch K1 that the other end and first duplexer are connected with second duplexer;

One end is connected with second duplexer with first duplexer, the second radio-frequency (RF) switch K2 that the other end is connected with transmit band pass filter by power amplifier;

One end is connected with second duplexer with first duplexer, the 3rd radio frequency K switch 3 that the other end is connected with reception bandpass filter by low noise amplifier;

Described first duplexer and second duplexer are respectively the corresponding duplexer of the corresponding duplexer of sub frequency band one and sub frequency band two, described transmit band pass filter is connected with radiofrequency launcher, described reception bandpass filter is connected with radio frequency receiver, and the passband of described transmit band pass filter and reception bandpass filter can cover the frequency of sub frequency band one and sub frequency band two simultaneously.

With reference to Fig. 8, be wireless terminal embodiment five structural representations in the embodiment of the invention, still to support A simultaneously, C section describes,

AC Tx BPF

802 1 ends are connected with radiofrequency launcher (RF Tx processingUnit) 801, the other end is connected with the input of

803, radio-frequency (RF) switch K2 one end is connected with the output of

803, the other end is connected with

Block A Duplexer

804 on the one hand, be connected with

BlockC Duplexer

806 on the other hand, the other end of

Block A Duplexer

804 is connected with

antenna

805 by radio-frequency (RF) switch K1,

antenna

805 also is connected with

Block C Duplexer

806 by radio-frequency (RF) switch K1, the end of radio-frequency (RF) switch K3 is connected with

Block A Duplexer

804 on the one hand, be connected with

Block CDuplexer

806 on the other hand, the other end is connected with the non-equilibrium variator of radio frequency (Balun) 807, and the other end of

Balun

807 is connected with radio frequency receiver (RF Rx processing Unit) 809 by

LNA

808.

Wherein, AC Tx BPF802: the band pass filter of the Block A of expression covering Band Class 5 and the tranmitting frequency of Block C; Block A Duplexer 804: the duplexer of the BlockA of expression Band Class 5; Block C Duplexer 806: the duplexer of the Block C of expression Band Class 5.

The channel selecting mode of this wireless terminal is specific as follows:

Judging the current frequency that will work when wireless terminal is during in the overlapping frequency of A, C section, and when this working frequency points during more than or equal to the frequency in A, C section overlapping region set, wireless terminal is just controlled the radio-frequency channel that radio-frequency (RF) switch K1-K3 selects the A section; When this operating frequency during less than that overlapping frequency of setting, wireless terminal is just controlled the radio-frequency channel that radio-frequency (RF) switch K1-K3 selects the C section.Are the overlapping available frequencies of A, C such as 126 frequencies to 168 frequencies, therefore can select any one frequency in 126 to 168, suppose it is 150, the radio-frequency channel of just using the A section during so more than or equal to 150 frequencies, the radio-frequency channel of just using the C section during less than 150 frequencies.

By the mode that switch is selected, wireless terminal just can satisfy all properties index of Block A, the Block C section of Band Class 5 simultaneously.

Be understandable that, the structure of described support 450M band A, C section shared wireless terminal, with reference to Fig. 8, also be applicable to other any two sub frequency bands, no matter whether these two sub frequency bands have lap, have the difference part of lap and zero lap part only to be the controller part (the controller part of the wireless terminal that do not draw among Fig. 8) of wireless terminal for two sub frequency bands, concrete processing method can be referring to aforementioned wireless terminal sub frequency band sharing method one and method two.

To sum up, in the wireless terminal that present embodiment is introduced, radio frequency selector comprises:

One end is connected with antenna, and the first radio-frequency (RF) switch K1 that the other end and first duplexer are connected with second duplexer, described first duplexer and second duplexer are respectively the corresponding duplexer of the corresponding duplexer of sub frequency band one and sub frequency band two;

One end is connected with second duplexer with first duplexer, the second radio-frequency (RF) switch K2 that the other end is connected with transmit band pass filter by power amplifier, the other end of described transmit band pass filter is connected with radiofrequency launcher, and the passband of described transmit band pass filter can cover the tranmitting frequency of sub frequency band one and sub frequency band two simultaneously;

One end is connected with second duplexer with first duplexer, the 3rd radio frequency K switch 3 that the other end is connected with the non-equilibrium variator of radio frequency, and the other end of the non-equilibrium variator of described radio frequency is connected with radio frequency receiver by low noise amplifier.

With reference to Fig. 9, be wireless terminal embodiment six structural representations in the embodiment of the invention, still to support A simultaneously, C section describes, AC Tx BPF 902 1 ends are connected with radiofrequency launcher (RF Tx processingUnit) 901, the other end is connected with the input of PA 903, radio-frequency (RF) switch K2 one end is connected with the output of PA 903, the other end is connected with Block A Duplexer 904 on the one hand, be connected with BlockC Duplexer 906 on the other hand, the other end of Block A Duplexer 904 is connected with antenna 905 by radio-frequency (RF) switch K1, antenna 905 also is connected with Block C Duplexer 906 by radio-frequency (RF) switch K1, the end of radio-frequency (RF) switch K3 is connected with Block A Duplexer 904 on the one hand, be connected with Block CDuplexer 906 on the other hand, the other end is connected with the first input end of LNA 907, one end of K switch 4 is connected with Block A Duplexer 904 on the one hand, be connected with Block C Duplexer 906 on the other hand, the other end is connected with second input of LNA 907, and the output of LNA 907 is connected with radio frequency receiver (RFRx processing Unit) 908.

Wherein,

AC Tx BPF

902, the band pass filter of the Block A of expression covering Band Class 5 and the tranmitting frequency of Block C;

Block A Duplexer

904, the duplexer of the Block A of expression Band Class 5;

Block C Duplexer

906, the duplexer of the Block C of expression Band Class 5.

The channel selecting mode of this wireless terminal is specific as follows:

Judging the current frequency that will work when wireless terminal is during in the overlapping frequency of A, C section, and when this working frequency points during more than or equal to the own frequency of setting in A, C section overlapping region, wireless terminal is just controlled the radio-frequency channel of radio-frequency (RF) switch K1-K4 selection A section.When that overlapping frequency that this operating frequency is set less than oneself, wireless terminal is just controlled the radio-frequency channel that radio-frequency (RF) switch K1-K4 selects the C section.Are the overlapping available frequencies of A, C such as 126 frequencies to 168 frequencies, therefore we select any one frequency in 126 to 168, suppose it is 150, so more than or equal to the radio-frequency channel of just using the A section of 150 frequencies, less than the radio-frequency channel of just using the C section of 150 frequencies;

By the mode that switch is selected, wireless terminal just can satisfy all properties index of Block A, the Block C section of Band Class 5 simultaneously.

Be understandable that, the structure of described support 450M band A, C section shared wireless terminal, with reference to Fig. 9, also be applicable to other any two sub frequency bands, no matter whether these two sub frequency bands have lap, have the difference part of lap and zero lap part only to be the controller part (the controller part of the wireless terminal that do not draw among Fig. 9) of wireless terminal for two sub frequency bands, concrete processing method can be referring to aforementioned wireless terminal sub frequency band sharing method one and method two.

In the present embodiment, radio frequency selector comprises:

One end is connected with antenna, the first radio-frequency (RF) switch K1 that the other end and first duplexer are connected with second duplexer;

One end is connected with transmit band pass filter by power amplifier, the second radio-frequency (RF) switch K2 that the other end and first duplexer are connected with second duplexer, the described transmit band pass filter other end is connected with radiofrequency launcher, and the passband of described transmit band pass filter can cover the tranmitting frequency of sub frequency band one and sub frequency band two simultaneously;

One end is connected with the first input end of low noise amplifier, the 3rd radio frequency K switch 3 that the other end and first duplexer are connected with second duplexer;

One end is connected with second input of low noise amplifier, the 4th radio-frequency (RF) switch K4 that the other end and first duplexer are connected with second duplexer, and the output of described low noise amplifier is connected with the output of radio frequency receiver.

One of ordinary skill in the art will appreciate that all or part of step that realizes in the foregoing description method one is to instruct relevant hardware to finish by program, described program can be stored in a kind of computer-readable recording medium, this program comprises the steps: when carrying out

Judge whether the current working frequency that sets is positioned at default sub frequency band one;

The above-mentioned storage medium of mentioning can be a read-only memory, disk or CD etc.

One of ordinary skill in the art will appreciate that all or part of step that realizes in the foregoing description method two is to instruct relevant hardware to finish by program, described program can be stored in a kind of computer-readable recording medium, this program comprises the steps: when carrying out

Whether judge the current working frequency set less than default judgement frequency, described judgement frequency is a described sub frequency band one with the overlapping frequency of described sub frequency band two or is frequency between sub frequency band one and the sub frequency band two;

If, then control the device of radio frequency selector choosing to described sub frequency band one correspondence, comprise first duplexer of sub frequency band one correspondence, make the wireless terminal radio-frequency channel be set to described sub frequency band one;

The above-mentioned storage medium of mentioning can be a read-only memory, disk or CD etc.

More than wireless terminal provided by the present invention and sub frequency band sharing method thereof are described in detail, for one of ordinary skill in the art, thought according to the embodiment of the invention, part in specific embodiments and applications all can change, in sum, this description should not be construed as limitation of the present invention.