CN104244259A - Method for settling internal coexisting interferences of terminal, system and mobile terminal thereof - Google Patents
Method for settling internal coexisting interferences of terminal, system and mobile terminal thereof Download PDFInfo
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- CN104244259A CN104244259A CN201310226967.7A CN201310226967A CN104244259A CN 104244259 A CN104244259 A CN 104244259A CN 201310226967 A CN201310226967 A CN 201310226967A CN 104244259 A CN104244259 A CN 104244259A
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Abstract
The invention provides a method for settling internal coexisting interferences of a terminal, a system and a mobile terminal thereof. The method of the invention comprises the steps of: detecting a working frequency band of an internal communication module of the terminal; and performing bandpass filtering according to the detected working frequency band and at least one preset band-pass filter. The method of the invention can settle the coexisting interferences between a WLAN and an LTE in the terminal and simultaneously prevents frequency spectrum resource wastage as possible.
Description
Technical field
The application relates to mobile communication technology field, particularly relates to a kind of method and system and the mobile terminal that solve the mutual interference of terminal inner.
Background technology
In the region that WLAN (WLAN) covers, user can convenient, accessing Internet in high quality by the terminal with WLAN function, obtaining information, amusement or carry out mobile office.The terminal that the overwhelming majority has a WLAN function all supports the frequency range required in IEEE802.11b agreement, i.e. 2400MHz ~ 2483.5MHz, and transmitting-receiving adopts identical frequency, can compatible 13 standard channels.The frequency of 13 concrete standard channels is see table 1 as described below:
| Channel Identifier | Centre frequency |
| CH1 | 2412MHz |
| CH2 | 2417MHz |
| CH3 | 2422MHz |
| CH4 | 2427MHz |
| CH5 | 2432MHz |
| CH6 | 2437MHz |
| CH7 | 2442MHz |
| CH8 | 2447MHz |
| CH9 | 2452MHz |
| CH10 | 2457MHz |
| CH11 | 2462MHz |
| CH12 | 2467MHz |
| CH13 | 2472MHz |
Table 1
A lot of terminals that in prior art, user uses not only have WLAN function, but also can be communicated by Long Term Evolution (LTE) system.But in practical application scene, there is mutual interference phenomenon in some frequency range used in the frequency range used in above-mentioned WLAN and LTE system.
Fig. 1 is the band interference schematic diagram of WLAN and LTE in prior art, as shown in Figure 1, the frequency range used in WLAN and the frequency range B40(2300MHz of TD-LTE ~ 2400MHz), B41(2496MHz ~ 2690MHz), B38(2570MHz ~ 2620MHZ) and the frequency range B7(of LTE FDD up: 2500MHz ~ 2570MHz, descending: 2620MHz ~ 2690MHz) between frequency range interval narrow.Therefore, when WLAN and LTE of terminal inner works simultaneously, there will be more serious mutual interference phenomenon.This mutual interference the receiver of WLAN and LTE of terminal inner will be made all to occur obvious sensitivity declines, the receiver of WLAN and LTE of terminal inner can be caused during serious interference normally to work.
For above-mentioned mutual interference problem, prior art mainly adopts and add separately a band pass filter on the receiving-transmitting chain of LTE and WLAN, physical isolation is carried out to the frequency range of LTE and WLAN, by avoiding the object using the mode of some frequency range to reach the frequency range interval increased between LTE and WLAN.Usually can by avoiding using the mode of some channel of WLAN or alleviating mutual interference problem by the mode of some frequency range avoiding use LTE as far as possible.
Such as, as shown in Figure 1, between the B40 frequency range that LTE uses and WLAN frequency range, protect interval without any frequency range physically, therefore there is very serious two-way interference between the two.In order to ensure that full frequency band (2300MHz ~ 2400MHz) sensitivity of the LTE receiver that terminal inner is operated in B40 frequency range all meets the index request (-94dBm20MHz) of 3GPP, so, WLAN receiving-transmitting chain is now needed only to be operated in frequency range away from 2400MHz.Fig. 2 is the schematic diagram of WLAN high band band pass filter of the prior art, Fig. 4 is the schematic diagram of the band pass filter of terminal inner in prior art, as shown in Figure 2 and Figure 4, some low-frequency range channels of WLAN can pass through to increase a WLAN high band band pass filter (the non-fully band-pass filter of frequency band of WLAN) on WLAN receiving-transmitting chain, and decayed suppression, thus avoid the sensitivity of WLAN transmitting chain to the LTE receiver be operated in B40 frequency range to impact; Meanwhile, WLAN now is only operated in the frequency range away from 2400MHz, therefore also can avoid being operated in transmitting of the LTE transmitting chain in B40 frequency range and to impact the sensitivity of WLAN receiver.
Type, as shown in Figure 1, between the B41 frequency range that LTE uses and WLAN frequency range, frequency range physically protects interval very narrow, also there is very serious two-way interference between the two; And between the uplink band of the B7 frequency range that LTE uses and WLAN frequency range, frequency range physically protects interval also very narrow, also there is the unidirectional interference of very serious B7 uplink band to WLAN frequency range between the two.In order to ensure that full frequency band (2496MHz ~ 2690MHz) sensitivity of the LTE receiver that terminal inner is operated in B41 frequency range all meets the index request (-92dBm20MHz) of 3GPP, and reduce that terminal inner is operated in LTE transmitting chain in B7 frequency range as far as possible transmit to the interference of WLAN, now need WLAN receiving-transmitting chain to be only operated in frequency range away from 2496MHz or 2500MHz.Fig. 3 is the schematic diagram of WLAN low-frequency range band pass filter of the prior art, as shown in Figure 3 and Figure 4, some high band channels of WLAN can pass through to increase a WLAN low-frequency range band pass filter (the non-fully band-pass filter of frequency band of WLAN) on WLAN receiving-transmitting chain, and decayed suppression, impacts to avoid the sensitivity of WLAN transmitting chain to the LTE receiver be operated in B41 and B7 frequency range; Meanwhile, now WLAN is only operated in the frequency range away from 2496MHz and 2500MHz, also can avoid being operated in transmitting of the LTE transmitting chain in B41 and B7 frequency range and to impact the sensitivity of WLAN receiver.
But; in said method in the prior art; it is the partial crit bandwidth of losing LTE or the WLAN mode as frequency range protection bandwidth; alleviate the problem of terminal inner WLAN and LTE mutual interference; therefore; when using above-mentioned WLAN high band band pass filter or WLAN low-frequency range band pass filter, some channel of WLAN or frequency range can not be used again, thus will bring the waste of larger frequency spectrum resource.Because frequency spectrum resource is very rare, most operation commercial city, the whole world needs for using some frequency spectrum to spend a large amount of frequency occupancies, therefore, above-mentioned thisly abandons using the way of some frequency range to be the very uneconomic way of one.
In summary, owing to there is shortcoming as above in said method of the prior art, how therefore a kind of better method and system proposed, thus while solving terminal inner WLAN and LTE mutual interference problem, avoid the waste of frequency spectrum resource as much as possible, be the problem needing solution in this area badly.
Summary of the invention
In view of this, the invention provides a kind of method and system and the mobile terminal that solve the mutual interference of terminal inner, thus the waste of frequency spectrum resource can be efficiently avoid while solving terminal inner WLAN and LTE mutual interference problem.
Technical scheme of the present invention is specifically achieved in that
Solve a method for the mutual interference of terminal inner, the method comprises:
The working frequency range of sense terminals intercommunication module;
Bandpass filtering is carried out according to detected working frequency range and at least one band pass filter of pre-setting.
Preferably, at least one band pass filter described comprises:
Be arranged on the WLAN high band band pass filter on WLAN receiving-transmitting chain and WLAN low-frequency range band pass filter;
Wherein, described WLAN high band band pass filter is provided for WLAN receiving-transmitting chain and is only operated in high band away from 2400MHz, and suppresses the interference signal fallen near the low working frequency range 2400MHz of WLAN; Described WLAN low-frequency range band pass filter is provided for WLAN receiving-transmitting chain and is only operated in low-frequency range away from 2496MHz or 2500MHz, and suppresses the interference signal fallen near WLAN high workload frequency range 2483.5MHz.
Preferably, describedly carry out bandpass filtering according to detected working frequency range and at least one band pass filter of pre-setting and comprise:
When detected working frequency range is the B40 frequency range of LTE, from described WLAN high band band pass filter and WLAN low-frequency range band pass filter, WLAN high band band pass filter is selected to carry out bandpass filtering;
When detected working frequency range is B41 or the B7 frequency range of LTE, from described WLAN high band band pass filter and WLAN low-frequency range band pass filter, WLAN low-frequency range band pass filter is selected to carry out bandpass filtering.
Preferably, the method also comprises further:
When terminal uses as portable WLAN hot spot, if described terminal detects accessible external stability formula WLAN hot spot, and described external stability formula WLAN hot spot distribute to channel and described terminal that described terminal uses current selected by band pass filter be not inconsistent, then described terminal disconnects the connection with LTE network, and select and access and the described band pass filter distributed to channel that described terminal uses and conform to, and the channel directly using described external stability formula WLAN hot spot to distribute carries out data service.
Preferably, at least one band pass filter described comprises:
Be arranged on the Band40 bank of filters on the B40 receiving-transmitting chain of LTE, be arranged on the Band41 bank of filters on the B41 receiving-transmitting chain of LTE and be arranged on the Band7 upstream filter group in the B7 up link of LTE;
Wherein, described Band40 bank of filters comprises a Band40 band pass filter and a Band40 low-frequency range band pass filter, described Band40 low-frequency range band pass filter is provided for LTE receiving-transmitting chain and is only operated in low-frequency range away from 2400MHz, and suppresses the interference signal fallen near LTE Band40 high workload frequency range 2400MHz;
Described Band41 bank of filters comprises a Band41 band pass filter and a Band41 high band band pass filter, described Band41 high band band pass filter is provided for LTE receiving-transmitting chain and is only operated in high band away from 2496MHz, and suppresses the interference signal fallen near the low working frequency range 2496MHz of LTE Band41;
Described Band7 upstream filter group comprises a up band pass filter of Band7 and a up high band band pass filter of Band7, the up high band band pass filter of described Band7 is provided for LTE receiving-transmitting chain and is only operated in high band away from 2500MHz, and suppresses the interference signal fallen near the low working frequency range 2500MHz of LTE Band7.
Preferably, describedly carry out bandpass filtering according to detected working frequency range and at least one band pass filter of pre-setting and comprise:
When detected working frequency range is the low-frequency range of the B40 of LTE, from described Band40 bank of filters, Band40 low-frequency range band pass filter is selected to carry out bandpass filtering;
When detected working frequency range is the high band of the B41 of LTE, from described Band41 bank of filters, Band41 high band band pass filter is selected to carry out bandpass filtering;
When detected working frequency range is the high band of the B7 of LTE, from described Band7 upstream filter group, the up high band band pass filter of Band7 is selected to carry out bandpass filtering.
Preferably, at least one band pass filter described is: adjustable WLAN equivalence full frequency band band pass filter.
Preferably, in the band of the band pass filter pre-set described in, Insertion Loss is 1 ~ 3dB;
The Out-of-band rejection of the described band pass filter pre-set is greater than 50dB.
Preferably, described terminal is:
Also by terminal equipment that WLAN uses as mobile focus while communicating with LTE network.
Preferably, described terminal is:
LTE portable mobile wireless IAD, customer terminal equipment or mobile phone.
Also proposed a kind of system solving the mutual interference of terminal inner in the present invention, this system comprises: transceiver chip, band pass filter selection control and at least one band pass filter;
Described transceiver chip, for the working frequency range of sense terminals intercommunication module, and sends to described band pass filter selection control by the working frequency range detected;
Described band pass filter selection control, carries out bandpass filtering for controlling described band pass filter according to detected working frequency range.
Preferably, at least one band pass filter described comprises:
Be arranged on the WLAN high band band pass filter on WLAN receiving-transmitting chain and WLAN low-frequency range band pass filter.
Wherein, described WLAN high band band pass filter is provided for WLAN receiving-transmitting chain and is only operated in high band away from 2400MHz, and suppresses the interference signal fallen near the low working frequency range 2400MHz of WLAN; Described WLAN low-frequency range band pass filter is provided for WLAN receiving-transmitting chain and is only operated in low-frequency range away from 2496MHz or 2500MHz, and suppresses the interference signal fallen near WLAN high workload frequency range 2483.5MHz.
Preferably, described band pass filter selection control, also for when to work as detected working frequency range be the B40 frequency range of LTE, from described WLAN high band band pass filter and WLAN low-frequency range band pass filter, WLAN high band band pass filter is selected to carry out bandpass filtering; When detected working frequency range is B41 or the B7 frequency range of LTE, from described WLAN high band band pass filter and WLAN low-frequency range band pass filter, WLAN low-frequency range band pass filter is selected to carry out bandpass filtering.
Preferably, described system also comprises further: WLAN (wireless local area network) chip;
Described WLAN (wireless local area network) chip, for when terminal uses as portable WLAN hot spot, detects the external stability formula WLAN hot spot that described terminal is accessible; When accessible external stability formula WLAN hot spot being detected, obtaining the channel that described external stability formula WLAN hot spot distributes to the use of described terminal, and the information of obtained channel is sent to described band pass filter selection control;
Described band pass filter selection control, when information and current selected band pass filter also for working as received channel are not inconsistent, disconnect the connection of described terminal and LTE network, and select and access and the described band pass filter distributed to channel that described terminal uses and conform to, and the channel directly using described external stability formula WLAN hot spot to distribute is that described terminal carries out data service.
Preferably, at least one band pass filter described comprises:
Be arranged on the Band40 bank of filters on the B40 receiving-transmitting chain of LTE, be arranged on the Band41 bank of filters on the B41 receiving-transmitting chain of LTE and be arranged on the Band7 upstream filter group in the B7 up link of LTE;
Wherein, described Band40 bank of filters comprises a Band40 band pass filter and a Band40 low-frequency range band pass filter, described Band40 low-frequency range band pass filter is provided for LTE receiving-transmitting chain and is only operated in low-frequency range away from 2400MHz, and suppresses the interference signal fallen near LTE Band40 high workload frequency range 2400MHz;
Described Band41 bank of filters comprises a Band41 band pass filter and a Band41 high band band pass filter, described Band41 high band band pass filter is provided for LTE receiving-transmitting chain and is only operated in high band away from 2496MHz, and suppresses the interference signal fallen near the low working frequency range 2496MHz of LTE Band41;
Described Band7 upstream filter group comprises a up band pass filter of Band7 and a up high band band pass filter of Band7, the up high band band pass filter of described Band7 is provided for LTE receiving-transmitting chain and is only operated in high band away from 2500MHz, and suppresses the interference signal fallen near the low working frequency range 2500MHz of LTE Band7.
Preferably, described band pass filter selection control, also for when to work as detected working frequency range be the low-frequency range of the B40 of LTE, selects Band40 low-frequency range band pass filter to carry out bandpass filtering from described Band40 bank of filters; When detected working frequency range is the high band of the B41 of LTE, from described Band41 bank of filters, Band41 high band band pass filter is selected to carry out bandpass filtering; When detected working frequency range is the high band of the B7 of LTE, from described Band7 upstream filter group, the up high band band pass filter of Band7 is selected to carry out bandpass filtering.
Preferably, at least one band pass filter described is adjustable WLAN equivalence full frequency band band pass filter.
Preferably, described terminal is:
Also by terminal equipment that WLAN uses as mobile focus while communicating with LTE network.
Preferably, described terminal is:
LTE portable mobile wireless IAD, customer terminal equipment or mobile phone.
As seen from the above technical solution, the present invention is by the working frequency range of first sense terminals intercommunication module, then dynamically a band pass filter is selected to access from multiple band pass filter according to detected working frequency range, therefore the mutual interference problem of terminal inner WLAN and LTE can effectively be avoided, the channel of WLAN both sides also can be made to be used alternatingly according to the mode of " time-division " simultaneously, from whole structure, any one WLAN channel is not definitely non-serviceable, namely from first and last not losing any frequency range, therefore the waste of frequency spectrum resource can be efficiently avoid while solving terminal inner WLAN and LTE mutual interference problem.
Accompanying drawing explanation
Fig. 1 is the band interference schematic diagram of WLAN and LTE in prior art.
Fig. 2 is the schematic diagram of WLAN high band band pass filter of the prior art.
Fig. 3 is the schematic diagram of WLAN low-frequency range band pass filter of the prior art.
Fig. 4 is the schematic diagram of the band pass filter of terminal inner in prior art.
Fig. 5 is the flow chart of the method for the mutual interference of solution terminal inner in the specific embodiment of the invention.
Fig. 6 is the schematic diagram one of the method for the mutual interference of solution terminal inner in the specific embodiment of the invention.
Fig. 7 is the schematic diagram two of the method for the mutual interference of solution terminal inner in the specific embodiment of the invention.
Fig. 8 is the schematic diagram of the WLAN equivalence full frequency band band pass filter in the specific embodiment of the invention.
Fig. 9 is the schematic diagram of the Band40 low-frequency range band pass filter in the specific embodiment of the invention.
Figure 10 is the schematic diagram of the Band41 high band band pass filter in the specific embodiment of the invention.
Figure 11 is the schematic diagram of the up high band band pass filter of Band7 in the specific embodiment of the invention.
Figure 12 is the structural representation of the system of the mutual interference of solution terminal inner in a specific embodiment of the present invention.
Figure 13 is the structural representation of the system of the mutual interference of solution terminal inner in another specific embodiment of the present invention.
Embodiment
For making technical scheme of the present invention and advantage clearly understand, below in conjunction with drawings and the specific embodiments, the present invention is further detailed explanation.
Fig. 5 is the flow chart of the method for the mutual interference of solution terminal inner in the embodiment of the present invention.
As shown in Figure 5, the method for the mutual interference of the solution terminal inner in the embodiment of the present invention comprises step as described below:
Step 501, the working frequency range of sense terminals intercommunication module.
In this step, will first the working frequency range of terminal inner communication module be detected, to obtain the presently used working frequency range of terminal inner communication module.
Specifically, in the preferred embodiment, the transceiver chip (the LTE IC such as, shown in Figure 12) pre-set can be used to detect the working frequency range of terminal inner communication module, and obtain the presently used working frequency range of terminal inner communication module, as shown in Figure 5.
Preferably, in a particular embodiment of the present invention, described intercommunication module is LTE communication module (LTEmodem).
Step 502, carries out bandpass filtering according to detected working frequency range and at least one band pass filter of pre-setting.
Before this step, one or more band pass filter can be pre-set.And after the working frequency range being detected terminal inner communication module by above-mentioned step 501, can carry out this step, namely carry out bandpass filtering according to detected working frequency range and at least one band pass filter of pre-setting.Such as, a band pass filter can be selected according to detected working frequency range from the multiple band pass filters pre-set, and the band pass filter selected by access carries out bandpass filtering.
Specifically, in the preferred embodiment, the band pass filter selection control pre-set can be used to select a band pass filter from least one band pass filter pre-set.
Preferably, in a particular embodiment of the present invention, in the band of the band pass filter pre-set described in, Insertion Loss (Insertion Loss) is preferably 1 ~ 3dB; The Out-of-band rejection (Attenuation) of the described band pass filter pre-set preferably is greater than 50dB.
After have selected a band pass filter, i.e. accessible selected band pass filter.
For example, in the preferred embodiment, at least one band pass filter described in step 502 can comprise: be arranged on the WLAN high band band pass filter on WLAN receiving-transmitting chain and WLAN low-frequency range band pass filter.
Wherein, described WLAN high band band pass filter is provided for WLAN receiving-transmitting chain and is only operated in high band away from 2400MHz, and the interference signal fallen near the low working frequency range 2400MHz of WLAN is suppressed, thus can effectively avoid the sensitivity of WLAN transmitting chain to the LTE receiver be operated in B40 frequency range to cause adverse influence, effectively can also avoid being operated in transmitting of the LTE transmitting chain in B40 frequency range and adverse influence is caused to the sensitivity of WLAN receiver.
Described WLAN low-frequency range band pass filter is provided for WLAN receiving-transmitting chain and is only operated in low-frequency range away from 2496MHz or 2500MHz, and the interference signal fallen near WLAN high workload frequency range 2483.5MHz is suppressed, thus can effectively avoid the sensitivity of WLAN transmitting chain to the LTE receiver be operated in B41 or B7 frequency range to cause adverse influence, effectively can also avoid being operated in transmitting of the LTE transmitting chain in B41 or B7 frequency range and adverse influence is caused to the sensitivity of WLAN receiver.
Therefore, in the preferred embodiment, when at least one band pass filter described be WLAN high band band pass filter and WLAN low-frequency range band pass filter time, describedly carry out bandpass filtering according to detected working frequency range and at least one band pass filter of pre-setting and can comprise:
When detected working frequency range is the B40 frequency range of LTE, from described WLAN high band band pass filter and WLAN low-frequency range band pass filter, WLAN high band band pass filter is selected to carry out bandpass filtering; As shown in Figure 6;
When detected working frequency range is B41 or the B7 frequency range of LTE, from described WLAN high band band pass filter and WLAN low-frequency range band pass filter, WLAN low-frequency range band pass filter is selected to carry out bandpass filtering; As shown in Figure 7.
Preferably, in a particular embodiment of the present invention, at least one band pass filter described is: adjustable WLAN equivalence full frequency band band pass filter.
As shown in Fig. 6, Fig. 7 and Fig. 8, in a particular embodiment of the present invention, above-mentioned WLAN high band band pass filter, WLAN low-frequency range band pass filter and band pass filter selection control can regard an adjustable WLAN equivalence full frequency band band pass filter as, are namely provided with a WLAN high band band pass filter, a WLAN low-frequency range band pass filter and a band pass filter selection control in this adjustable WLAN equivalence full frequency band band pass filter.Wherein, band pass filter selection control can be connected with transceiver chip, and receives related output signal (being the detected working frequency range) x of transceiver chip transmission.Therefore, the band pass filter selection control working frequency range control WLAN high band band pass filter detected that can send according to transceiver chip and the break-make of WLAN low-frequency range band pass filter.
Therefore, can suppose that detected working frequency range is x, the function of adjustable WLAN equivalence full frequency band band pass filter is H(Ω), the function of WLAN high band band pass filter is H
high_BPF(Ω), the function of WLAN low-frequency range band pass filter is H
high_BPF(Ω), then:
H(Ω)＝a(x)·H
high_BPF(Ω)+b(x)·H
low_BPF(Ω) （1）
Wherein, as x ∈ [B40], a (x)=1 and b (x)=0; As x ∈ [B41, B7], a (x)=0 and b (x)=1.
Known according to above-mentioned formula (1), when band pass filter selection control detects that now terminal communication module uses the B40 frequency range of LTE, x ∈ [B40], now a (x)=1 and b (x)=0, then the function of adjustable WLAN equivalence full frequency band band pass filter is: H (Ω)=H
high_BPF(Ω), therefore, now selected band pass filter is WLAN high band band pass filter.When this WLAN high band band pass filter is as when being accessed by the band pass filter selected, the high band that WLAN receiving-transmitting chain now will only be operated in away from 2400MHz, thus can effectively avoid the sensitivity of WLAN transmitting chain to the LTE receiver be operated in B40 frequency range to impact; Meanwhile, also effectively can avoid being operated in transmitting of the LTE transmitting chain in B40 frequency range to impact the sensitivity of WLAN receiver.
And when band pass filter selection control detects that now terminal communication module uses B41 or the B7 frequency range of LTE, x ∈ [B41, B7], now a (x)=0 and b (x)=1, then the function of adjustable WLAN equivalence full frequency band band pass filter is: H (Ω)=H
low_BPF(Ω), therefore, now selected band pass filter is WLAN low-frequency range band pass filter.When this WLAN low-frequency range band pass filter is as when being accessed by the band pass filter selected, the low-frequency range that WLAN receiving-transmitting chain now will only be operated in away from 2496MHz or 2500MHz, thus can effectively avoid the sensitivity of WLAN transmitting chain to the LTE receiver be operated in B41 or B7 frequency range to impact; Meanwhile, also effectively can avoid being operated in transmitting of the LTE transmitting chain in B41 or B7 frequency range to impact the sensitivity of WLAN receiver.
And, in the above-mentioned methods, owing to dynamically a band pass filter being selected to access from multiple band pass filter according to detected working frequency range, therefore the mode according to " time-division " is used alternatingly by the channel of WLAN both sides, from whole structure, any one WLAN channel is not definitely non-serviceable, namely from first and last not losing any frequency range, the waste of frequency spectrum resource can therefore be efficiently avoid while solving terminal inner WLAN and LTE mutual interference problem.
Again such as, in the preferred embodiment, at least one band pass filter described in step 502 also can comprise: be arranged on the Band40 bank of filters on the B40 receiving-transmitting chain of LTE, be arranged on the Band41 bank of filters on the B41 receiving-transmitting chain of LTE and be arranged on the Band7 upstream filter group in the B7 up link of LTE.
Wherein, described Band40 bank of filters comprises a Band40 band pass filter and a Band40 low-frequency range band pass filter, described Band40 low-frequency range band pass filter is provided for LTE receiving-transmitting chain and is only operated in low-frequency range away from 2400MHz, and the interference signal fallen near LTE Band40 high workload frequency range 2400MHz is suppressed, realize frequency range protection interval physically, thus the mutual interference between the Band40 frequency range that can effectively avoid LTE to use and WLAN receiving-transmitting chain; As shown in Figure 9.
Described Band41 bank of filters comprises a Band41 band pass filter and a Band41 high band band pass filter, described Band41 high band band pass filter is provided for LTE receiving-transmitting chain and is only operated in high band away from 2496MHz, and the interference signal fallen near the low working frequency range 2496MHz of LTE Band41 is suppressed, realize frequency range protection interval physically, thus the mutual interference between the Band41 frequency range that can effectively avoid LTE to use and WLAN receiving-transmitting chain; As shown in Figure 10.
Described Band7 upstream filter group comprises a up band pass filter of Band7 and a up high band band pass filter of Band7; the up high band band pass filter of described Band7 is provided for LTE receiving-transmitting chain and is only operated in high band away from 2500MHz; and the interference signal fallen near the low working frequency range 2500MHz of LTE Band7 is suppressed; realize frequency range protection interval physically; thus the mutual interference between the Band7 frequency range that can effectively avoid LTE to use and WLAN receiving-transmitting chain, as shown in figure 11.
In addition, above-mentioned Band40 band pass filter, Band41 band pass filter and the up band pass filter of Band7 with shown in Fig. 4 be arranged on Band40 band pass filter on the B40 receiving-transmitting chain of LTE, be arranged on the Band41 band pass filter on the B41 receiving-transmitting chain of LTE and the up band pass filter of Band7 that is arranged in the B7 up link of LTE corresponding respectively, belong to band pass filter conventional in this area, therefore do not repeat them here.
Therefore, in the preferred embodiment, when at least one band pass filter described comprises the up high band band pass filter of Band40 low-frequency range band pass filter, Band41 high band band pass filter and Band7, describedly carry out bandpass filtering according to detected working frequency range and at least one band pass filter of pre-setting and can comprise:
When detected working frequency range is the low-frequency range of the B40 of LTE, from described Band40 bank of filters, Band40 low-frequency range band pass filter is selected to carry out bandpass filtering;
When detected working frequency range is the high band of the B41 of LTE, from described Band41 bank of filters, Band41 high band band pass filter is selected to carry out bandpass filtering;
When detected working frequency range is the high band of the B7 of LTE, from described Band7 upstream filter group, the up high band band pass filter of Band7 is selected to carry out bandpass filtering.
In the above-mentioned methods, owing to dynamically a band pass filter being selected to access from multiple band pass filter according to detected working frequency range, therefore with the LTE frequency range of WLAN adjacent frequency bands, the mode according to " time-division " is used alternatingly, from whole structure, any one section of LTE frequency range is not definitely non-serviceable, namely from first and last not losing any frequency range, the waste of frequency spectrum resource can therefore be efficiently avoid while solving terminal inner WLAN and LTE mutual interference problem.
Preferably, in a particular embodiment of the present invention, described terminal is: also by any terminal equipment that WLAN uses as mobile focus while communicating with LTE network.Therefore, in the preferred embodiment, WiFi communication module (WiFi modem) and the LTE communication module for communicating with LTE network is provided with in described terminal.
Such as, described terminal can be: LTE portable mobile wireless IAD (also referred to as Hotspot or MiFi), customer terminal equipment (CPE, Customer Premise Equipment) or mobile phone.Wherein, LTE portable mobile wireless IAD is a kind of portable wideband wireless device, integrate radio modem, router and access point three function, it not only can realize broadband connection by Mobile data access point, can also provide hotspot whenever and wherever possible.
Further, in the preferred embodiment, when terminal uses as portable WLAN hot spot, if this terminal detects accessible external stability formula WLAN hot spot, and this external stability formula WLAN hot spot distribute to channel and this terminal that this terminal uses current selected by band pass filter (WLAN band pass filter) be not inconsistent, then this terminal can disconnect the connection with LTE network, and select and access and the described band pass filter distributed to channel that described terminal uses and conform to, and the channel directly using the fixed WLAN hot spot of said external to distribute carries out data service (namely direct carry out data service by WLAN), thus effectively can avoid the mutual interference of LTE and WLAN.
Such as, when at least one band pass filter described be WLAN high band band pass filter and WLAN low-frequency range band pass filter time, if the working frequency range being detected terminal inner communication module (i.e. LTE communication module) by transceiver chip is B40 frequency range, then band pass filter selection control is by according to detected working frequency range, from the WLAN high band band pass filter preset and WLAN low-frequency range band pass filter, select WLAN high band band pass filter, but, if now terminal uses as portable WLAN hot spot and accessible external stability formula WLAN hot spot detected, and the channel that this external stability formula WLAN hot spot distributes to the use of this terminal only has CH1 just, be not inconsistent with the current selected WLAN high band band pass filter of this terminal, now, this terminal can disconnect the connection with LTE network, and do not access selected WLAN high band band pass filter, but select and access the band pass filter (i.e. WLAN low-frequency range band pass filter) conformed to described channel CH1, and the channel CH1 directly using the fixed WLAN hot spot of said external to distribute carries out data service, thus effectively can avoid the mutual interference of LTE and WLAN.
Again such as, when at least one band pass filter described be WLAN high band band pass filter and WLAN low-frequency range band pass filter time, if the working frequency range being detected terminal inner communication module (i.e. LTE communication module) by transceiver chip is B41 or B7 frequency range, then band pass filter selection control is by according to detected working frequency range, from the WLAN high band band pass filter preset and WLAN low-frequency range band pass filter, select WLAN low-frequency range band pass filter, but, if now terminal uses as portable WLAN hot spot and accessible external stability formula WLAN hot spot detected, and the channel that this external stability formula WLAN hot spot distributes to the use of this terminal only has CH13 just, be not inconsistent with the current selected WLAN low-frequency range band pass filter of this terminal, now, this terminal can disconnect the connection with LTE network, and do not access selected WLAN low-frequency range band pass filter, but select and access the band pass filter (i.e. WLAN high band band pass filter) conformed to described channel CH13, and the channel CH13 directly using the fixed WLAN hot spot of said external to distribute carries out data service, thus effectively can avoid the mutual interference of LTE and WLAN.
In addition, in a particular embodiment of the present invention, a kind of system solving the mutual interference of terminal inner is additionally provided.
Figure 12 is the structural representation of the system of the mutual interference of solution terminal inner in a specific embodiment of the present invention, and Figure 13 is the structural representation of the system of the mutual interference of solution terminal inner in another specific embodiment of the present invention.As shown in Figure 12 and Figure 13, the system of the mutual interference of described solution terminal inner comprises: transceiver chip 110, band pass filter selection control 100 and at least one band pass filter;
Described transceiver chip 110, for the working frequency range of sense terminals intercommunication module, and sends to described band pass filter selection control 100 by the working frequency range detected;
Described band pass filter selection control 100, carries out bandpass filtering for controlling described band pass filter according to detected working frequency range.
Preferably, in a particular embodiment of the present invention, at least one band pass filter described comprises: be arranged on the WLAN high band band pass filter 121 on WLAN receiving-transmitting chain and WLAN low-frequency range band pass filter 122.
Wherein, described WLAN high band band pass filter 121 is provided for WLAN receiving-transmitting chain and is only operated in high band away from 2400MHz, and suppresses the interference signal fallen near the low working frequency range 2400MHz of WLAN; Described WLAN low-frequency range band pass filter 122 is provided for WLAN receiving-transmitting chain and is only operated in low-frequency range away from 2496MHz or 2500MHz, and suppresses the interference signal fallen near WLAN high workload frequency range 2483.5MHz.
Now, described band pass filter selection control 100, also for when to work as detected working frequency range be the B40 frequency range of LTE, from described WLAN high band band pass filter 121 and WLAN low-frequency range band pass filter 122, WLAN high band band pass filter 121 is selected to carry out bandpass filtering; When detected working frequency range is B41 or the B7 frequency range of LTE, from described WLAN high band band pass filter 121 and WLAN low-frequency range band pass filter 122, WLAN low-frequency range band pass filter 122 is selected to carry out bandpass filtering.
Preferably, in another specific embodiment of the present invention, the system of the mutual interference of described solution terminal inner also can comprise further: WLAN (wireless local area network) chip 120.
Described WLAN (wireless local area network) chip 120, for when terminal uses as portable WLAN hot spot, detects the external stability formula WLAN hot spot that described terminal is accessible; When accessible external stability formula WLAN hot spot being detected, obtaining the channel that described external stability formula WLAN hot spot distributes to the use of described terminal, and the information of obtained channel is sent to described band pass filter selection control 100;
Described band pass filter selection control 100, when information and current selected band pass filter also for working as received channel are not inconsistent, disconnect the connection of described terminal and LTE network, and select and access and the described band pass filter distributed to channel that described terminal uses and conform to, and the channel directly using described external stability formula WLAN hot spot to distribute is that described terminal carries out data service.
Preferably, in a particular embodiment of the present invention, as shown in figure 12, described WLAN (wireless local area network) chip 120 is WLAN IC.
System in the embodiment of the present invention shown in above-mentioned Figure 12 and the system of the prior art shown in Fig. 4 are carried out contrast known, system shown in Figure 12 device be equivalent in use dotted line frame 130 substituted for the WLAN band pass filter 41 in Fig. 4, and the band pass filter selection control 100 in the dotted line frame 130 shown in Figure 12 can also be connected with transceiver chip 110 and WLAN (wireless local area network) chip 120 and receive the signal that transceiver chip 110 and WLAN (wireless local area network) chip 120 send, thus the break-make of the WLAN high band band pass filter 121 in dotted line frame 130 and WLAN low-frequency range band pass filter 122 is controlled.
Preferably, in another specific embodiment of the present invention, at least one band pass filter described comprises:
Be arranged on the Band40 bank of filters on the B40 receiving-transmitting chain of LTE, be arranged on the Band41 bank of filters on the B41 receiving-transmitting chain of LTE and be arranged on the Band7 upstream filter group in the B7 up link of LTE;
Wherein, described Band40 bank of filters comprises a Band40 band pass filter 400 and a Band40 low-frequency range band pass filter 401, described Band40 low-frequency range band pass filter 401 is provided for LTE receiving-transmitting chain and is only operated in low-frequency range away from 2400MHz, and suppresses the interference signal fallen near LTE Band40 high workload frequency range 2400MHz;
Described Band41 bank of filters comprises a Band41 band pass filter 410 and a Band41 high band band pass filter 411, described Band41 high band band pass filter 411 is provided for LTE receiving-transmitting chain and is only operated in high band away from 2496MHz, and suppresses the interference signal fallen near the low working frequency range 2496MHz of LTE Band41;
Described Band7 upstream filter group comprises a up band pass filter of Band7 70 and a up high band band pass filter 71 of Band7, the up high band band pass filter 71 of described Band7 is provided for LTE receiving-transmitting chain and is only operated in high band away from 2500MHz, and suppresses the interference signal fallen near the low working frequency range 2500MHz of LTE Band7.
Now, described band pass filter selection control 100, also for when to work as detected working frequency range be the low-frequency range of the B40 of LTE, selects Band40 low-frequency range band pass filter 401 to carry out bandpass filtering from described Band40 bank of filters; When detected working frequency range is the high band of the B41 of LTE, from described Band41 bank of filters, Band41 high band band pass filter 411 is selected to carry out bandpass filtering; When detected working frequency range is the high band of the B7 of LTE, from described Band7 upstream filter group, the up high band band pass filter 71 of Band7 is selected to carry out bandpass filtering.
Preferably, in a particular embodiment of the present invention, at least one band pass filter described can be: adjustable WLAN equivalence full frequency band band pass filter.
In addition, in the preferred embodiment, described terminal is: also by terminal equipment that WLAN uses as mobile focus while communicating with LTE network.Therefore, in the preferred embodiment, WiFi communication module and the LTE communication module for communicating with LTE network is provided with in described terminal.Such as, described terminal can be: LTE portable mobile wireless IAD (also referred to as Hotspot or MiFi), customer terminal equipment (CPE) or mobile phone.
In sum, in the inventive solutions, due to can the working frequency range of first sense terminals intercommunication module, then dynamically a band pass filter is selected to access from multiple band pass filter according to detected working frequency range, therefore the mutual interference problem of terminal inner WLAN and LTE can effectively be avoided, the channel of WLAN both sides also can be made to be used alternatingly according to the mode of " time-division " simultaneously, from whole structure, any one WLAN channel is not definitely non-serviceable, namely from first and last not losing any frequency range, therefore the waste of frequency spectrum resource can be efficiently avoid while solving terminal inner WLAN and LTE mutual interference problem.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within the scope of protection of the invention.
Claims (20)
1. solve a method for the mutual interference of terminal inner, it is characterized in that, the method comprises:
The working frequency range of sense terminals intercommunication module;
Bandpass filtering is carried out according to detected working frequency range and at least one band pass filter of pre-setting.
2. method according to claim 1, is characterized in that, at least one band pass filter described comprises:
Be arranged on the WLAN high band band pass filter on WLAN receiving-transmitting chain and WLAN low-frequency range band pass filter;
Wherein, described WLAN high band band pass filter is provided for WLAN receiving-transmitting chain and is only operated in high band away from 2400MHz, and suppresses the interference signal fallen near the low working frequency range 2400MHz of WLAN; Described WLAN low-frequency range band pass filter is provided for WLAN receiving-transmitting chain and is only operated in low-frequency range away from 2496MHz or 2500MHz, and suppresses the interference signal fallen near WLAN high workload frequency range 2483.5MHz.
3. method according to claim 2, is characterized in that, describedly carries out bandpass filtering according to detected working frequency range and at least one band pass filter of pre-setting and comprises:
When detected working frequency range is the B40 frequency range of LTE, from described WLAN high band band pass filter and WLAN low-frequency range band pass filter, WLAN high band band pass filter is selected to carry out bandpass filtering;
When detected working frequency range is B41 or the B7 frequency range of LTE, from described WLAN high band band pass filter and WLAN low-frequency range band pass filter, WLAN low-frequency range band pass filter is selected to carry out bandpass filtering.
4. method according to claim 3, is characterized in that, the method also comprises further:
When terminal uses as portable WLAN hot spot, if described terminal detects accessible external stability formula WLAN hot spot, and described external stability formula WLAN hot spot distribute to channel and described terminal that described terminal uses current selected by band pass filter be not inconsistent, then described terminal disconnects the connection with LTE network, and select and access and the described band pass filter distributed to channel that described terminal uses and conform to, and the channel directly using described external stability formula WLAN hot spot to distribute carries out data service.
5. method according to claim 1, is characterized in that, at least one band pass filter described comprises:
Be arranged on the Band40 bank of filters on the B40 receiving-transmitting chain of LTE, be arranged on the Band41 bank of filters on the B41 receiving-transmitting chain of LTE and be arranged on the Band7 upstream filter group in the B7 up link of LTE;
Wherein, described Band40 bank of filters comprises a Band40 band pass filter and a Band40 low-frequency range band pass filter, described Band40 low-frequency range band pass filter is provided for LTE receiving-transmitting chain and is only operated in low-frequency range away from 2400MHz, and suppresses the interference signal fallen near LTE Band40 high workload frequency range 2400MHz;
Described Band41 bank of filters comprises a Band41 band pass filter and a Band41 high band band pass filter, described Band41 high band band pass filter is provided for LTE receiving-transmitting chain and is only operated in high band away from 2496MHz, and suppresses the interference signal fallen near the low working frequency range 2496MHz of LTE Band41;
Described Band7 upstream filter group comprises a up band pass filter of Band7 and a up high band band pass filter of Band7, the up high band band pass filter of described Band7 is provided for LTE receiving-transmitting chain and is only operated in high band away from 2500MHz, and suppresses the interference signal fallen near the low working frequency range 2500MHz of LTE Band7.
6. method according to claim 5, is characterized in that, describedly carries out bandpass filtering according to detected working frequency range and at least one band pass filter of pre-setting and comprises:
When detected working frequency range is the low-frequency range of the B40 of LTE, from described Band40 bank of filters, Band40 low-frequency range band pass filter is selected to carry out bandpass filtering;
When detected working frequency range is the high band of the B41 of LTE, from described Band41 bank of filters, Band41 high band band pass filter is selected to carry out bandpass filtering;
When detected working frequency range is the high band of the B7 of LTE, from described Band7 upstream filter group, the up high band band pass filter of Band7 is selected to carry out bandpass filtering.
7. method according to claim 1, is characterized in that, at least one band pass filter described is:
Adjustable WLAN equivalence full frequency band band pass filter.
8. method according to claim 1, is characterized in that,
In the band of the described band pass filter pre-set, Insertion Loss is 1 ~ 3dB;
The Out-of-band rejection of the described band pass filter pre-set is greater than 50dB.
9., according to described method arbitrary in claim 1 to 8, it is characterized in that, described terminal is:
Also by terminal equipment that WLAN uses as mobile focus while communicating with LTE network.
10. method according to claim 9, is characterized in that, described terminal is:
LTE portable mobile wireless IAD, customer terminal equipment or mobile phone.
11. 1 kinds of systems solving the mutual interference of terminal inner, it is characterized in that, this system comprises: transceiver chip, band pass filter selection control and at least one band pass filter;
Described transceiver chip, for the working frequency range of sense terminals intercommunication module, and sends to described band pass filter selection control by the working frequency range detected;
Described band pass filter selection control, carries out bandpass filtering for controlling described band pass filter according to detected working frequency range.
12. systems according to claim 11, is characterized in that, at least one band pass filter described comprises:
Be arranged on the WLAN high band band pass filter on WLAN receiving-transmitting chain and WLAN low-frequency range band pass filter.
Wherein, described WLAN high band band pass filter is provided for WLAN receiving-transmitting chain and is only operated in high band away from 2400MHz, and suppresses the interference signal fallen near the low working frequency range 2400MHz of WLAN; Described WLAN low-frequency range band pass filter is provided for WLAN receiving-transmitting chain and is only operated in low-frequency range away from 2496MHz or 2500MHz, and suppresses the interference signal fallen near WLAN high workload frequency range 2483.5MHz.
13. systems according to claim 12, is characterized in that,
Described band pass filter selection control, also for when to work as detected working frequency range be the B40 frequency range of LTE, selects WLAN high band band pass filter to carry out bandpass filtering from described WLAN high band band pass filter and WLAN low-frequency range band pass filter; When detected working frequency range is B41 or the B7 frequency range of LTE, from described WLAN high band band pass filter and WLAN low-frequency range band pass filter, WLAN low-frequency range band pass filter is selected to carry out bandpass filtering.
14. systems according to claim 13, is characterized in that, described system also comprises further: WLAN (wireless local area network) chip;
Described WLAN (wireless local area network) chip, for when terminal uses as portable WLAN hot spot, detects the external stability formula WLAN hot spot that described terminal is accessible; When accessible external stability formula WLAN hot spot being detected, obtaining the channel that described external stability formula WLAN hot spot distributes to the use of described terminal, and the information of obtained channel is sent to described band pass filter selection control;
Described band pass filter selection control, when information and current selected band pass filter also for working as received channel are not inconsistent, disconnect the connection of described terminal and LTE network, and select and access and the described band pass filter distributed to channel that described terminal uses and conform to, and the channel directly using described external stability formula WLAN hot spot to distribute is that described terminal carries out data service.
15. systems according to claim 11, is characterized in that, at least one band pass filter described comprises:
Be arranged on the Band40 bank of filters on the B40 receiving-transmitting chain of LTE, be arranged on the Band41 bank of filters on the B41 receiving-transmitting chain of LTE and be arranged on the Band7 upstream filter group in the B7 up link of LTE;
Wherein, described Band40 bank of filters comprises a Band40 band pass filter and a Band40 low-frequency range band pass filter, described Band40 low-frequency range band pass filter is provided for LTE receiving-transmitting chain and is only operated in low-frequency range away from 2400MHz, and suppresses the interference signal fallen near LTE Band40 high workload frequency range 2400MHz;
Described Band41 bank of filters comprises a Band41 band pass filter and a Band41 high band band pass filter, described Band41 high band band pass filter is provided for LTE receiving-transmitting chain and is only operated in high band away from 2496MHz, and suppresses the interference signal fallen near the low working frequency range 2496MHz of LTE Band41;
Described Band7 upstream filter group comprises a up band pass filter of Band7 and a up high band band pass filter of Band7, the up high band band pass filter of described Band7 is provided for LTE receiving-transmitting chain and is only operated in high band away from 2500MHz, and suppresses the interference signal fallen near the low working frequency range 2500MHz of LTE Band7.
16. systems according to claim 15, is characterized in that:
Described band pass filter selection control, also for when to work as detected working frequency range be the low-frequency range of the B40 of LTE, selects Band40 low-frequency range band pass filter to carry out bandpass filtering from described Band40 bank of filters; When detected working frequency range is the high band of the B41 of LTE, from described Band41 bank of filters, Band41 high band band pass filter is selected to carry out bandpass filtering; When detected working frequency range is the high band of the B7 of LTE, from described Band7 upstream filter group, the up high band band pass filter of Band7 is selected to carry out bandpass filtering.
17. systems according to claim 11, is characterized in that:
At least one band pass filter described is adjustable WLAN equivalence full frequency band band pass filter.
18. systems according to claim 11, is characterized in that, described terminal is:
Also by terminal equipment that WLAN uses as mobile focus while communicating with LTE network.
19. systems according to claim 18, is characterized in that, described terminal is:
LTE portable mobile wireless IAD, customer terminal equipment or mobile phone.
20. 1 kinds of mobile terminals, is characterized in that, comprise the mutual interference system of the solution terminal inner as described in claim 11 to 19 any one.
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| CN106100645A (en) * | 2016-05-25 | 2016-11-09 | 广东欧珀移动通信有限公司 | Combiner system, community antenna system, terminal unit and signal processing method |
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| CN112118021B (en) * | 2019-12-30 | 2021-10-19 | 中兴通讯股份有限公司 | Method for reducing coexistence interference, communication device and readable storage medium |
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