CN110324073A

CN110324073A - Frequency band switching method, low-power consumption WAN equipment and storage medium

Info

Publication number: CN110324073A
Application number: CN201910529904.6A
Authority: CN
Inventors: 杨鑫
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2019-06-19
Filing date: 2019-06-19
Publication date: 2019-10-11

Abstract

The embodiment of the present application discloses a kind of frequency band switching method, low-power consumption WAN equipment and storage medium, and the frequency band switching method includes: that detection obtains corresponding first signal-to-noise ratio of work at present frequency range and corresponding second signal-to-noise ratio of spare frequency range；Wherein, spare frequency range is to preset other frequency ranges in frequency range, other than work at present frequency range；According to the first signal-to-noise ratio, the second signal-to-noise ratio and snr threshold is prestored, judges whether to hand-off process；Wherein, snr threshold is prestored for being determined to the communication quality of work at present frequency range；If it is determined that switching over processing, then work at present frequency range is switched over according to spare frequency range.

Description

Frequency band switching method, low-power consumption WAN equipment and storage medium

Technical field

The invention relates to wireless communication fields more particularly to a kind of frequency band switching method, low-power consumption wide area network to set Standby and storage medium.

Background technique

Low-power consumption wide area network (Low Power Wide Area Network, LPWAN) is a kind of nothing of remote low-power consumption Line communication network, LPWAN have the characteristics that network coverage is wide, power consumption of terminal is low, and several kilometers of even tens public affairs may be implemented In the network coverage, therefore LPWAN is suitable for the application deployment of large-scale Internet of Things.Wherein, LPWAN usually uses Sub-GHz Frequency range and industry, science and medicine (Industrial Scientific Medical, ISM) frequency range are carried out as communications band Networking.

Sub-GHz frequency range wide coverage, ability through walls is strong, but due to other 1GHz frequency signals of communication below, Such as DTV, no-load communication techniques (Ultra Wideband, UWB), global system for mobile communications (Global System For Mobile Communications, GSM) frequency range and radio communication etc., the working signal of LPWAN can be interfered, because This Sub-GHz frequency range is vulnerable to influence；In contrast, the existing network environment of ISM band is cleaner, and the interference of other signals is smaller, But ISM band coverage area and ability through walls are then relatively weak, therefore, to the reasonable selection of Sub-GHz frequency range and ISM band and Switch particularly important.

Summary of the invention

The embodiment of the present application provides a kind of frequency band switching method, low-power consumption WAN equipment and storage medium, Ke Yi Reasonably switched between Sub-GHz frequency range and ISM band, so as to effectively improve the communication performance of LPWAN, is promoted The communication quality of LPWAN.

The technical solution of the embodiment of the present application is achieved in that

The embodiment of the present application provides a kind of frequency band switching method, which comprises

Detection obtains corresponding first signal-to-noise ratio of work at present frequency range and corresponding second signal-to-noise ratio of spare frequency range；Wherein, The spare frequency range is other frequency ranges other than in default frequency range, described work at present frequency range；

According to first signal-to-noise ratio, second signal-to-noise ratio and snr threshold is prestored, judges whether to switch Processing；Wherein, the snr threshold that prestores is for being determined the communication quality of the work at present frequency range；

If it is determined that switching over processing, then the work at present frequency range is switched over according to the spare frequency range.

The embodiment of the present application provides a kind of low-power consumption WAN equipment, and the low-power consumption WAN equipment includes: detection Unit, judging unit and switch unit,

The detection unit, it is corresponding for detecting acquisition corresponding first signal-to-noise ratio of work at present frequency range and spare frequency range Second signal-to-noise ratio；Wherein, the spare frequency range is other frequency ranges other than in default frequency range, described work at present frequency range；

The judging unit, for according to first signal-to-noise ratio, second signal-to-noise ratio and prestoring snr threshold, Judge whether to hand-off process；Wherein, the snr threshold that prestores is for the communication quality to the work at present frequency range It is determined；

The switch unit, for if it is determined that switching over processing, then according to the spare frequency range to the work at present Frequency range switches over.

The embodiment of the present application provides a kind of low-power consumption WAN equipment, and the low-power consumption WAN equipment includes processing Device, the memory for being stored with the processor-executable instruction realize institute as above when described instruction is executed by the processor The frequency band switching method stated.

The embodiment of the present application provides a kind of computer readable storage medium, is stored thereon with program, is applied to low-power consumption In WAN equipment, when described program is executed by processor, frequency band switching method as described above is realized.

The embodiment of the present application provides a kind of frequency band switching method, low-power consumption WAN equipment and storage medium, low-power consumption WAN equipment detection obtains corresponding first signal-to-noise ratio of work at present frequency range and corresponding second signal-to-noise ratio of spare frequency range；Its In, spare frequency range is to preset other frequency ranges in frequency range, other than work at present frequency range；According to the first signal-to-noise ratio, the second noise Than and prestore snr threshold, judge whether to hand-off process；Wherein, snr threshold is prestored for work at present frequency The communication quality of section is determined；If it is determined that switching over processing, then work at present frequency range is switched over according to spare frequency range. It can be seen that in embodiments herein, low-power consumption WAN equipment can detect simultaneously obtains work at present frequency range and standby With the signal-to-noise ratio of frequency range, then by prestoring snr threshold and including that work at present frequency range and spare frequency range prestore frequency range Signal-to-noise ratio determine the communication quality of work at present frequency range, the switching for whether carrying out frequency range further determined, so as to current Reasonably switched between working frequency range and spare frequency range.That is, low-power consumption WAN equipment can be by noise The monitoring of ratio realizes that the reasonable switching of frequency range promotes the communication of LPWAN so as to effectively improve the communication performance of LPWAN Quality.

Detailed description of the invention

Fig. 1 is the implementation process schematic diagram for the frequency band switching method that the embodiment of the present application proposes；

Fig. 2 is the schematic diagram of signal-to-noise ratio detection；

Fig. 3 is the composed structure schematic diagram one for the low-power consumption WAN equipment that the embodiment of the present application proposes；

Fig. 4 is the composed structure schematic diagram two for the low-power consumption WAN equipment that the embodiment of the present application proposes.

Specific embodiment

Below in conjunction with the attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application carries out clear, complete Site preparation description.It is understood that specific embodiment described herein is used only for explaining related application, rather than to this application Restriction.It also should be noted that illustrating only part relevant to related application for ease of description, in attached drawing.

With the high speed development of Internet of Things, the portfolio for interconnecting low-power consumption WAN equipment will increase by 1,000 times or more, pass The short distance wireless technical and honeycomb network technology of system can no longer meet diversified internet of things service demand.Therefore, new logical Letter mode LPWAN comes into being.Wherein, LPWAN mainly meets big connection, low rate internet of things service, big with coverage area, The features such as link cost is low, low in energy consumption.It is applied to that the demands such as smart home, industrial data collection are remote, low-power consumption is with big more The wireless communication technique of amount connection carries out in the regional Internet of Things communication scenes that people connect with object, object and object.

LPWAN is also referred to as low-power domain (Low-Power Wide-Area, LPWA) low-power network (Low-Power Network, LPN), compared with traditional technology of Internet of things, LPWA technology has clear advantage, such as: remote, coverage area Extensively, up to tens kilometers；Low-power consumption, battery life are 10 years；Low data rate, occupied bandwidth is small, the data volume of transmission Few, the communication frequency is low；Propagation delay time is insensitive, not high to data transmission requirement of real-time；Low cost requires portion since scale is big The cost of administration is low；Gateway or base station, coverage area is big, and network infrastructure development requirement is few；Since most of technical works exist Sub-GHz frequency range, network signal penetration power are strong.Wherein, LPWA technology can be applied to all trades and professions, as intelligent industrial, intelligence are public It works together industry, smart city, intelligent building etc..

LPWAN usually uses Sub-GHz frequency range and ISM band to carry out networking as communications band.Wherein, Sub-GHz frequency Section is 1GHz frequency range below, and ISM band is generally the frequency range of 2.4GHz-2.5GHz.Specifically, Sub-GHz frequency range covers model Enclose wide, ability through walls is strong, but due to other 1GHz frequency signals of communication below, such as DTV, UWB, GSM frequency range and Radio communication etc. can interfere the working signal of LPWAN, therefore Sub-GHz frequency range is vulnerable to influence；In contrast, ISM frequency The existing network environment of section is cleaner, and the interference of other signals is smaller, but ISM band coverage area and ability through walls are then relatively weak, Therefore, LPWAN equipment needs that Sub-GHz frequency range and ISM band are reasonably selected and switched at work, for example, choosing It selects and interferes small and coverage area also small ISM band, alternatively, selection coverage area is big and interference also big Sub-GHz frequency range.

Therefore, present applicant proposes a kind of frequency band switching method, LPWAN equipment can detect respectively Sub-GHz frequency range and The signal-to-noise ratio (SIGNAL-NOISE RATIO, SNR) of ISM band, and carried out by the SNR to Sub-GHz frequency range and ISM band Compare and judges, the selection and switching of Lai Jinhang frequency range, so as to adjust working frequency range to the highest frequency range of SNR intensity, And then can reasonably be switched between Sub-GHz frequency range and ISM band, improve the communication performance of LPWAN, effectively mentions Rise the communication quality of LPWAN.

Below in conjunction with the attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application carries out clear, complete Site preparation description.

One embodiment of the application provides a kind of frequency band switching method, and Fig. 1 is the frequency range switching that the embodiment of the present application proposes The implementation process schematic diagram of method, as shown in Figure 1, low-power consumption WAN equipment is debugged in embodiments herein Method may comprise steps of:

Step 101, detection obtain corresponding first signal-to-noise ratio of work at present frequency range and corresponding second noise of spare frequency range Than；Wherein, spare frequency range is to preset other frequency ranges in frequency range, other than work at present frequency range.

In embodiments herein, low-power consumption WAN equipment, which can be detected first, obtains work at present frequency range corresponding the One signal-to-noise ratio and corresponding second signal-to-noise ratio of spare frequency range.Specifically, spare frequency range can be preparatory for low-power consumption WAN equipment Other frequency ranges in the default frequency range being arranged, other than work at present frequency range.

Further, in embodiments herein, low-power consumption WAN equipment can first simultaneously be carried out default frequency range Scanning Detction, it is hereby achieved that the default corresponding signal-to-noise ratio of frequency range.Specifically, default frequency range may include work at present frequency range With the spare frequency range other than work at present frequency range.Correspondingly, the signal-to-noise ratio of low-power consumption WAN equipment detection acquisition may include Corresponding first signal-to-noise ratio of work at present frequency range and corresponding second signal-to-noise ratio of spare frequency range.

It should be noted that default frequency range may include that there are two different frequency ranges, also in embodiments herein It is to say, default frequency range may include the work at present frequency range that low-power consumption WAN equipment is carrying out wireless communication and as spare A spare frequency range.

Further, in the implementation of the application, low-power consumption WAN equipment can be respectively to the difference in default frequency range Frequency range carries out periodic Scanning Detction, it is hereby achieved that in default frequency range corresponding first signal-to-noise ratio of work at present frequency range and Corresponding second signal-to-noise ratio of spare frequency range.

It should be noted that low-power consumption WAN equipment carries out periodically default frequency range in embodiments herein Scanning Detction when, work at present frequency range and spare frequency range can be detected according to prefixed time interval, thus can Obtain the first signal-to-noise ratio and the second signal-to-noise ratio.That is, low-power consumption WAN equipment obtains work at present frequency range pair in detection It, can be according to prefixed time interval to work at present frequency range when corresponding second signal-to-noise ratio of the first signal-to-noise ratio and spare frequency range answered It is detected, obtains the first signal-to-noise ratio, meanwhile, spare frequency range can be detected according to prefixed time interval, obtain second Signal-to-noise ratio.

Further, in embodiments herein, low-power consumption WAN equipment can preset a time interval, To periodically be scanned and be detected according to prefixed time interval, meanwhile, low-power consumption WAN equipment can also carry out reality When Scanning Detction, to obtain the real-time signal-to-noise ratio of default frequency range.

It should be noted that LPWAN core can be set in low-power consumption WAN equipment in embodiments herein The detection of the signal-to-noise ratio to default frequency range may be implemented in piece, specifically, LPWAN chip, and realizes and carry out between default frequency range Selection and switching.Fig. 2 is the schematic diagram of signal-to-noise ratio detection, as shown in Fig. 2, low-power consumption WAN equipment may include LPWAN core Piece, power amplifier PA1, filter 1, antenna 1, power amplifier PA2, filter 2 and antenna 2, wherein power amplifier PA1, filter 1 and antenna 1 correspond to work at present frequency range, and power amplifier PA2, filter 2 and antenna 2 correspond to standby Use frequency range.Further, low-power consumption WAN equipment can be by LPWAN chip respectively to the work at present frequency in default frequency range Section and spare frequency range carry out the detection of signal-to-noise ratio.Wherein, signal-to-noise ratio be the output signal of amplifier power with export simultaneously Noise power ratio, usually indicated with decibels.The signal-to-noise ratio of low-power consumption WAN equipment is higher to show that it is generated miscellaneous Sound is fewer.In general, signal-to-noise ratio is bigger, illustrates that the noise being mixed in signal is smaller, the sound quality of acoustic playback is higher, otherwise On the contrary.

Further, in embodiments herein, default frequency range can pre-select for low-power consumption WAN equipment and It is arranged, specifically, default frequency range may include Sub-GHz frequency range and ISM band.That is, work at present frequency range can be with When for Sub-GHz frequency range, spare frequency range can be ISM band；Correspondingly, it is spare when work at present frequency range can be ISM band Frequency range can be Sub-GHz frequency range

It should be noted that Sub-GHz frequency range is that frequency is 1GHz frequency range below, tool in embodiments herein Body can be the frequency range for including 27MHz-960MHz.

Further, in embodiments herein, ISM band is industrial, scientific and medicine frequency range respectively, I.e. ISM band is exactly to move out of a certain section of frequency range mainly to open to industry, and science and medical facility use.Using these frequency ranges without Need licensing or expense, it is only necessary in accordance with certain transmission power, and not interfere to other frequency ranges.ISM frequency Regulation and disunity of the section in various countries.Such as in the U.S. there are three frequency range 902MHz-928MHz, 2400MHz-2484.5MHz and 5725MHz-5850MHz, and then have part for gsm communication in the frequency range of European 900MHz.Specifically, 2.4GHz is each Kuomintang-Communist Same ISM band.Therefore the wireless networks such as WLAN, bluetooth, can work in 2.4GHz frequency range.That is, In embodiments herein, ISM band can be the frequency range of 2.4GHz-2.5GHz.

Further, in embodiments herein, in low-power consumption WAN equipment wireless communication procedure, to Sub- When ghz band and ISM band are selected and are switched, if the corresponding communication quality of the two is close, low-power consumption wide area network Equipment can preferred Sub-GHz frequency range.That is, in this application, the priority of Sub-GHz frequency range is higher than ISM band.Example Such as, under original state, low-power consumption WAN equipment can first control LPWAN chip in Sub-GHz band operation.This is because Low-power consumption WAN equipment is obtained using the equivalent power of power ratio 2.4GHz used in the frequency point in Sub-GHz frequency range is small It is more, so as to reduce power consumption.

It should be noted that frequency range is a frequency range in embodiments herein, unit is MHz, is a nothing Dimensional unit, a frequency point correspond to the center of a frequency range, i.e. frequency point and frequency range is corresponding relationship, the frequency point in frequency range It cannot arbitrarily change.

Step 102 according to the first signal-to-noise ratio, the second signal-to-noise ratio and prestores snr threshold, judges whether to switch Processing；Wherein, snr threshold is prestored for being determined to the communication quality of work at present frequency range.

In embodiments herein, low-power consumption WAN equipment obtains the default corresponding signal-to-noise ratio of frequency range in detection, i.e., Obtain corresponding second signal-to-noise ratio of spare frequency range other than corresponding first signal-to-noise ratio of work at present frequency range and work at present frequency range Later, according to the first signal-to-noise ratio, the second signal-to-noise ratio and snr threshold can be prestored, judges whether to hand-off process.

It should be noted that low-power consumption WAN equipment can be previously stored with a noise in the implementation of the application The threshold value of ratio, that is, prestore snr threshold, so as to further determine that whether work at present frequency range is full according to snr threshold The requirement communicated enough.That is, snr threshold can be used for being determined the communication quality of work at present frequency range.

Further, in embodiments herein, since the intensity of SNR is smaller, then outer interference strength is lower, it can Illustrate that corresponding communication quality is better, therefore, the pre-set snr threshold that prestores of low-power consumption WAN equipment can be pole Small value.Specifically, low-power consumption WAN equipment can will test the corresponding signal-to-noise ratio of default frequency range and characterization minimum of acquisition The snr threshold that prestores be compared, to can be further determined whether to need to switch frequency range according to comparison result.

It should be noted that in embodiments herein, since the priority of Sub-GHz frequency range is higher than ISM band, because This, for Sub-GHz frequency range be work at present frequency range and ISM band be work at present frequency range both it is different in the case of, low function Consumption WAN equipment can judge whether to hand-off process on the basis of prestoring snr threshold in different ways.

Further, in embodiments herein, if ISM band is work at present frequency range, Sub-GHz frequency range is standby With frequency range, low-power consumption WAN equipment according to the first signal-to-noise ratio, the second signal-to-noise ratio and is prestoring snr threshold, judges whether When switching over processing, corresponding second signal-to-noise ratio of Sub-GHz frequency range and snr threshold can be prestored first to spare frequency range It is compared, if comparison result is more than or equal to for the second signal-to-noise ratio prestores snr threshold, low-power consumption wide area network Equipment, which can be determined that, switches over processing, and work at present frequency range is switched to Sub-GHz frequency range by ISM band；If comparing knot Fruit is the second signal-to-noise ratio less than snr threshold is prestored, then low-power consumption WAN equipment needs are continued through to work at present frequency Section, i.e. corresponding second signal-to-noise ratio of the corresponding first signal-to-noise ratio Sub-GHz frequency range of ISM band are compared to judge whether to Hand-off process.

It should be noted that in embodiments herein, if Sub-GHz frequency range is work at present frequency range, ISM band For spare frequency range, low-power consumption WAN equipment according to the first signal-to-noise ratio, the second signal-to-noise ratio and is prestoring snr threshold, judges When whether switching over processing, low-power consumption WAN equipment can be first to work at present frequency range, i.e. Sub-GHz frequency range corresponding It one signal-to-noise ratio and prestores snr threshold and is compared, then further determined whether to switch over processing according to comparison result. Further, in embodiments herein, low-power consumption WAN equipment by the first signal-to-noise ratio and prestore snr threshold into After row compares, if the first signal-to-noise ratio, which is more than or equal to, prestores snr threshold, low-power consumption WAN equipment To think that work at present frequency range there is no by too big signal interference, therefore can directly determine at the switching without frequency range Reason；If the first signal-to-noise ratio, which is less than, prestores snr threshold, low-power consumption WAN equipment can think work at present frequency Section receives biggish signal interference, it is therefore desirable to further according to the second signal-to-noise ratio and prestore snr threshold to whether carrying out Hand-off process is judged.Further, in embodiments herein, low-power consumption WAN equipment is further according to second Signal-to-noise ratio and when prestoring snr threshold and judging whether to hand-off process, if the second signal-to-noise ratio, which is less than, prestores signal-to-noise ratio threshold Value, then low-power consumption WAN equipment can think that spare frequency range also receives biggish signal interference, it is therefore desirable into one Whether step is according to the first signal-to-noise ratio and the second signal-to-noise ratio to switching over processing and judge.That is, in the reality of the application It applies in example, if corresponding first signal-to-noise ratio of work at present frequency range and corresponding second signal-to-noise ratio of spare frequency range, which are respectively less than, prestores letter It makes an uproar than threshold value, then low-power consumption WAN equipment also needs to be compared the first signal-to-noise ratio and the second signal-to-noise ratio again, to sentence The fixed hand-off process for whether needing to carry out frequency range.Specifically, when the first signal-to-noise ratio is less than the second signal-to-noise ratio, it is believed that although Work at present frequency range and spare frequency range receive the interference of other signals, but the corresponding communication quality of spare frequency range is better than working as Preceding frequency range, therefore, low-power consumption WAN equipment can be determined that the hand-off process for needing to carry out frequency range, by work at present frequency range by Sub-GHz frequency range is switched to ISM band.

Step 103, if it is determined that switching over processing, then work at present frequency range is switched over according to spare frequency range.

In embodiments herein, in embodiments herein, low-power consumption WAN equipment is according to the first noise Than, the second signal-to-noise ratio and snr threshold is prestored, after judging whether to hand-off process, if it is decided that switch over place Reason, then low-power consumption WAN equipment can directly switch over work at present frequency range according to spare frequency range.

It should be noted that low-power consumption WAN equipment is believed by the first signal-to-noise ratio, second in embodiments herein It makes an uproar than and prestores signal-to-noise ratio to be compared, determine that work at present frequency range receives the interference of other signals according to comparison result, After judgement switches over processing, low-power consumption WAN equipment can switch to spare frequency range, carry out nothing by spare frequency range Line communication, so as to realize the promotion of communication quality.

Further, in embodiments herein, low-power consumption WAN equipment is after determining to switch over processing, just It can be carried out wireless communication using spare frequency range as working frequency range by spare frequency range.For example, default frequency range includes work at present Frequency range (Sub-GHz frequency range) and spare frequency range (ISM band), low-power consumption WAN equipment is corresponding according to Sub-GHz frequency range It signal-to-noise ratio a, the corresponding signal-to-noise ratio b of ISM band and prestores after snr threshold m is compared, judgement needs to carry out frequency range Switching, then low-power consumption WAN equipment can switch over Sub-GHz frequency range by ISM band, that is to say, that After the switching for completing frequency range, work at present frequency range is ISM band, and spare frequency range is Sub-GHz frequency range；For another example default frequency range Including work at present frequency range (ISM band) and spare frequency range (Sub-GHz frequency range), low-power consumption WAN equipment is according to Sub- It the corresponding signal-to-noise ratio a of ghz band, the corresponding signal-to-noise ratio b of ISM band and prestores after snr threshold m is compared, determines Need to carry out the switching of frequency range, then low-power consumption WAN equipment can cut ISM band by Sub-GHz frequency range It changes, that is to say, that after the switching for completing frequency range, work at present frequency range is Sub-GHz frequency range, and spare frequency range is ISM band

It should be noted that in embodiments herein, low-power consumption WAN equipment after the switching for completing frequency range, It can repeat to detect according to prefixed time interval and obtain the default corresponding signal-to-noise ratio of frequency range, and continue corresponding according to frequency range is preset Signal-to-noise ratio carries out frequency range switching.

Further, in embodiments herein, low-power consumption WAN equipment, can after completing the switching of frequency range To continue the method according to above-mentioned steps 101 to step 103, constantly the signal-to-noise ratio of default frequency range is monitored, so as to To carry out the switching of frequency range, timely to guarantee low-power consumption WAN equipment when work at present frequency range is by larger interference Communication quality.

A kind of frequency band switching method that the embodiment of the present application proposes, the detection of low-power consumption WAN equipment obtain work at present frequency Corresponding first signal-to-noise ratio of section and corresponding second signal-to-noise ratio of spare frequency range；Wherein, spare frequency range is in default frequency range, current Other frequency ranges other than working frequency range；According to the first signal-to-noise ratio, the second signal-to-noise ratio and prestore snr threshold, judge whether into Row hand-off process；Wherein, snr threshold is prestored for being determined to the communication quality of work at present frequency range；If it is determined that carrying out Hand-off process then switches over work at present frequency range according to spare frequency range.It can be seen that in embodiments herein, it is low Power consumption WAN equipment can detect the signal-to-noise ratio for obtaining work at present frequency range and spare frequency range simultaneously, then by prestoring noise The logical of work at present frequency range is determined with including the signal-to-noise ratio for prestoring frequency range of work at present frequency range and spare frequency range than threshold value Believe quality, the switching for whether carrying out frequency range further determined, it is reasonable to be carried out between work at present frequency range and spare frequency range Switching.That is, low-power consumption WAN equipment can realize the reasonable switching of frequency range by the monitoring to signal-to-noise ratio, thus The communication performance that can effectively improve LPWAN promotes the communication quality of LPWAN.

Based on the above embodiment, in the another embodiment of the application, if work at present frequency range is Sub-GHz frequency range, Spare frequency range is ISM band, and low-power consumption WAN equipment is according to the first signal-to-noise ratio, the second signal-to-noise ratio and prestores signal-to-noise ratio threshold Value, the method for judging whether to hand-off process may comprise steps of:

If step 102a, the first signal-to-noise ratio, which is less than, prestores snr threshold, continues according to the second signal-to-noise ratio and prestore letter It makes an uproar than whether threshold decision switches over processing.

In embodiments herein, low-power consumption WAN equipment obtains the default corresponding signal-to-noise ratio of frequency range in detection, i.e., Obtain corresponding second signal-to-noise ratio of spare frequency range other than corresponding first signal-to-noise ratio of work at present frequency range and work at present frequency range Later, if the first signal-to-noise ratio, which is less than, prestores snr threshold, low-power consumption WAN equipment can continue according to the second letter Make an uproar than with prestore snr threshold and be switched into the further judgement of row to whether carrying out frequency range.

Further, in embodiments herein, if work at present frequency range is Sub-GHz frequency range, spare frequency range is ISM band, since the priority of Sub-GHz frequency range is higher than ISM band, low-power consumption WAN equipment is obtaining work at present After corresponding second signal-to-noise ratio of spare frequency range other than corresponding first signal-to-noise ratio of frequency range and work at present frequency range, first will it need The communication quality of Sub-GHz frequency range is determined, i.e., first to the first signal-to-noise ratio and prestores snr threshold and is compared.

It should be noted that low-power consumption WAN equipment obtains work at present frequency in detection in embodiments herein After corresponding first signal-to-noise ratio of section, first by the first signal-to-noise ratio and it can prestore snr threshold and be compared, if comparing knot Fruit is less than for the first signal-to-noise ratio prestores snr threshold, it is believed that it is biggish dry that work at present frequency range receives other signals It disturbs, that is to say, that low-power consumption WAN equipment can consider that the corresponding communication quality of work at present frequency range is unsatisfactory.Further Ground, for whether needing to carry out the switching of frequency range, low-power consumption WAN equipment also needs further corresponding by spare frequency range Second signal-to-noise ratio determines.

Further, in embodiments herein, low-power consumption WAN equipment the first signal-to-noise ratio and will prestore noise After being compared than threshold value, even if the first signal-to-noise ratio, which is less than, prestores snr threshold, low-power consumption WAN equipment can not be straight The switching for determining to carry out frequency range is connect, this is because low-power consumption WAN equipment and not knowing the communication quality of spare frequency range and whether managing Think.That is, low-power consumption WAN equipment also needs to prestore snr threshold and corresponding second noise of spare frequency range again Than being compared, further determine spare frequency range whether by biggish interference, therefore, low-power consumption WAN equipment need after It is continuous according to the second signal-to-noise ratio and to prestore snr threshold and judge whether to hand-off process.

If step 102b, the first signal-to-noise ratio, which is more than or equal to, prestores snr threshold, determine without hand-off process.

In the implementation of the application, low-power consumption WAN equipment obtains the default corresponding signal-to-noise ratio of frequency range in detection, that is, obtains Take corresponding second signal-to-noise ratio of spare frequency range other than corresponding first signal-to-noise ratio of work at present frequency range and work at present frequency range it Afterwards, if the first signal-to-noise ratio, which is more than or equal to, prestores snr threshold, low-power consumption WAN equipment can directly determine The hand-off process of progress frequency range is not needed.

It should be noted that low-power consumption WAN equipment obtains work at present frequency in detection in embodiments herein After corresponding first signal-to-noise ratio of section, first by the first signal-to-noise ratio and it can prestore snr threshold and be compared, if comparing knot Fruit is more than or equal to for the first signal-to-noise ratio prestores snr threshold, it is believed that work at present frequency range is not by other signals Biggish interference, that is to say, that low-power consumption WAN equipment can consider that the corresponding communication quality of work at present frequency range compares reason Think, therefore, low-power consumption WAN equipment, which can be determined that, does not need to switch over processing, but continues through work at present frequency range, That is Sub-GHz frequency range carries out wireless communication.

In embodiments herein, further, low-power consumption WAN equipment continues according to the second signal-to-noise ratio and prestores The method that snr threshold judges whether to hand-off process may comprise steps of:

If step 201, the second signal-to-noise ratio, which are more than or equal to, prestores snr threshold, judgement switches over processing.

In embodiments herein, if the first signal-to-noise ratio, which is less than, prestores snr threshold, low-power consumption WAN equipment It by the second signal-to-noise ratio and is prestoring after snr threshold is compared, if the second signal-to-noise ratio, which is more than or equal to, prestores noise Than threshold value, then low-power consumption WAN equipment, which can be determined that, switches over processing.

It should be noted that due to low-power consumption WAN equipment and not knowing spare frequency range in embodiments herein Communication quality it is whether ideal, therefore even if the first signal-to-noise ratio, which is less than, prestores snr threshold, low-power consumption WAN equipment is not yet Can directly determine carry out frequency range switching, but need the communication quality to spare frequency range be determined after judge whether again into The switching of line frequency section.Therefore, low-power consumption WAN equipment will prestore snr threshold and corresponding second signal-to-noise ratio of spare frequency range It is compared, if comparison result is more than or equal to for the second signal-to-noise ratio prestores snr threshold, it is believed that spare frequency range Not by biggish interference, correspondingly, the communication quality of spare frequency range is also ideal, therefore low-power consumption WAN equipment can Processing is switched over direct judgement, i.e., work at present frequency range is switched to ISM band by Sub-GHz frequency range.

If step 202, the second signal-to-noise ratio, which are less than, prestores snr threshold, continue according to the first signal-to-noise ratio and the second noise Than judging whether to hand-off process.

In embodiments herein, if the first signal-to-noise ratio, which is less than, prestores snr threshold, low-power consumption WAN equipment By the second signal-to-noise ratio and prestoring after snr threshold is compared, if the second signal-to-noise ratio, which is less than, prestores snr threshold, So low-power consumption WAN equipment needs to continue to judge whether to hand-off process according to the first signal-to-noise ratio and the second signal-to-noise ratio.

It should be noted that in embodiments herein, low-power consumption WAN equipment will prestore snr threshold and standby It is compared with corresponding second signal-to-noise ratio of frequency range, it, can if comparison result is the second signal-to-noise ratio less than snr threshold is prestored To think that spare frequency range also receives biggish interference, correspondingly, the communication quality of spare frequency range is also unsatisfactory, therefore, low Power consumption WAN equipment also needs to judge whether to hand-off process further according to the first signal-to-noise ratio and the second signal-to-noise ratio.

Further, in embodiments herein, if the first signal-to-noise ratio and the second signal-to-noise ratio, which are respectively less than, prestores noise Than threshold value, i.e. work at present frequency range and spare frequency range receives biggish signal interference, and low-power consumption WAN equipment just needs Again by the comparison to the first signal-to-noise ratio and the second signal-to-noise ratio, to determine whether the corresponding communication quality of spare frequency range is better than currently The corresponding communication quality of working frequency range, therefore, low-power consumption WAN equipment need to continue according to the first signal-to-noise ratio and the second noise The row that is switched into whether comparison carries out frequency range further judges.

In embodiments herein, further, low-power consumption WAN equipment continues according to the first signal-to-noise ratio and second The method that signal-to-noise ratio judges whether to hand-off process may comprise steps of:

If step 301, the first signal-to-noise ratio switch over processing less than the second signal-to-noise ratio, judgement.

In embodiments herein, low-power consumption WAN equipment is determining that the first signal-to-noise ratio and the second signal-to-noise ratio be respectively less than Snr threshold is prestored, and after the first signal-to-noise ratio and the second signal-to-noise ratio are compared, if the first signal-to-noise ratio is less than second Signal-to-noise ratio, then low-power consumption WAN equipment, which can be determined that, switches over processing.

Further, in embodiments herein, work at present frequency range and spare frequency range receive biggish signal Interference, low-power consumption WAN equipment continue to compare the first signal-to-noise ratio and the second signal-to-noise ratio, if the comparison result of the two is first Signal-to-noise ratio is less than the second signal-to-noise ratio, then bigger based on signal-to-noise ratio, illustrate to mix noise in the signal it is smaller, that is, interfere it is smaller this One reason, low-power consumption WAN equipment can determine the corresponding communication quality of spare frequency range relative to work at present frequency range more Ideal, therefore, low-power consumption WAN equipment, which can be determined that, switches over processing, i.e., low-power consumption WAN equipment can be by current work Make frequency range and ISM band is switched to by Sub-GHz frequency range.

If step 302, the first signal-to-noise ratio are more than or equal to the second signal-to-noise ratio, determine without hand-off process.

In embodiments herein, low-power consumption WAN equipment is determining that the first signal-to-noise ratio and the second signal-to-noise ratio be respectively less than Prestore snr threshold, and after the first signal-to-noise ratio and the second signal-to-noise ratio are compared, if the first signal-to-noise ratio be greater than or Equal to the second signal-to-noise ratio, then low-power consumption WAN equipment can be determined that without hand-off process.

Further, in embodiments herein, work at present frequency range and spare frequency range receive biggish signal Interference, low-power consumption WAN equipment continue to compare the first signal-to-noise ratio and the second signal-to-noise ratio, if the comparison result of the two is first Signal-to-noise ratio is more than or equal to the second signal-to-noise ratio, then it is bigger based on signal-to-noise ratio, illustrate that mixed noise in the signal is smaller, i.e., it is dry This smaller reason is disturbed, low-power consumption WAN equipment can determine the corresponding communication quality of spare frequency range lower than work at present frequency The corresponding communication quality of section, that is to say, that although work at present frequency range receives biggish interference, preset in frequency range The corresponding communication quality of spare frequency range is not better than work at present frequency range, and therefore, low-power consumption WAN equipment can be determined that not Processing is switched over, but continues through work at present frequency range, is i.e. Sub-GHz frequency range carries out wireless communication.

Based on the above embodiment, spare if work at present frequency range is ISM band in the another embodiment of the application When frequency range is Sub-GHz frequency range, low-power consumption WAN equipment is according to the first signal-to-noise ratio, the second signal-to-noise ratio and prestores signal-to-noise ratio threshold Value, the method for judging whether to hand-off process may comprise steps of:

If step 102c, the second signal-to-noise ratio, which is more than or equal to, prestores snr threshold, judgement switches over processing.

In embodiments herein, low-power consumption WAN equipment obtains the default corresponding signal-to-noise ratio of frequency range in detection, i.e., Obtain corresponding second signal-to-noise ratio of spare frequency range other than corresponding first signal-to-noise ratio of work at present frequency range and work at present frequency range Later, if the first signal-to-noise ratio, which is more than or equal to, prestores snr threshold, low-power consumption WAN equipment can directly be sentenced Surely the switching of frequency range is carried out.

Further, in embodiments herein, if work at present frequency range is ISM band, spare frequency range is Sub- Ghz band, since the priority of Sub-GHz frequency range is higher than ISM band, low-power consumption WAN equipment is obtaining work at present After corresponding second signal-to-noise ratio of spare frequency range other than corresponding first signal-to-noise ratio of frequency range and work at present frequency range, first will it need The communication quality of Sub-GHz frequency range is determined, i.e., first to the second signal-to-noise ratio and prestores snr threshold and is compared.

It should be noted that low-power consumption WAN equipment obtains spare frequency range pair in detection in embodiments herein After the second signal-to-noise ratio answered, first by the second signal-to-noise ratio and it can prestore snr threshold and be compared, if comparison result is Second signal-to-noise ratio, which is more than or equal to, prestores snr threshold, it is believed that spare frequency range is not biggish dry by other signals It disturbs, that is to say, that low-power consumption WAN equipment can consider that the corresponding communication quality of spare frequency range is ideal, therefore, low function Consumption WAN equipment can directly determine the hand-off process of progress frequency range, and work at present frequency range is switched to Sub- by ISM band Ghz band.

That is, even if work at present frequency range is not Sub-GHz frequency range, low-power consumption is wide in embodiments herein Domain net equipment also will first be determined the communication quality of Sub-GHz frequency range, once it is determined that corresponding second letter of Sub-GHz frequency range It makes an uproar and prestores snr threshold than being more than or equal to, that is, determine Sub-GHz frequency range not by biggish interference, then low-power consumption Work at present frequency range directly can be switched to Sub-GHz frequency range by WAN equipment.

If step 102d, the second signal-to-noise ratio, which is less than, prestores snr threshold, continue to be believed according to the first signal-to-noise ratio and second It makes an uproar than judging whether to hand-off process.

In embodiments herein, low-power consumption WAN equipment obtains the default corresponding signal-to-noise ratio of frequency range in detection, i.e., Obtain corresponding second signal-to-noise ratio of spare frequency range other than corresponding first signal-to-noise ratio of work at present frequency range and work at present frequency range Later, if the second signal-to-noise ratio, which is less than, prestores snr threshold, low-power consumption WAN equipment can continue according to the first letter It makes an uproar than judging whether to hand-off process with the second signal-to-noise ratio.

It should be noted that low-power consumption WAN equipment obtains spare frequency range pair in detection in embodiments herein After the second signal-to-noise ratio answered, first by the second signal-to-noise ratio and it can prestore snr threshold and be compared, if comparison result is Second signal-to-noise ratio, which is less than, prestores snr threshold, it is believed that and spare frequency range receives the biggish interference of other signals, that is, It says, low-power consumption WAN equipment can consider that the corresponding communication quality of spare frequency range is unsatisfactory.Further, for whether needing The switching of frequency range is carried out, low-power consumption WAN equipment also needs further through corresponding first signal-to-noise ratio of work at present frequency range To determine.

Further, in embodiments herein, low-power consumption WAN equipment the second signal-to-noise ratio and will prestore noise After being compared than threshold value, even if the second signal-to-noise ratio, which is less than, prestores snr threshold, low-power consumption WAN equipment can not be straight The switching determined without frequency range is connect, this is because the communication quality of low-power consumption WAN equipment and uncertain current year working frequency range Whether spare frequency range is better than.That is, low-power consumption WAN equipment also needs corresponding first letter of work at present frequency range again The second signal-to-noise ratio more corresponding than with spare frequency range of making an uproar is compared, and further judges whether to hand-off process.

That is, in embodiments herein, although ISM band is work at present frequency range, due to Sub-GHz Frequency range has higher priority, therefore, even if low-power consumption WAN equipment determines corresponding second signal-to-noise ratio of Sub-GHz frequency range Less than snr threshold is prestored, that is, Sub-GHz frequency range is determined by biggish interference, low-power consumption WAN equipment will not be direct Determine without hand-off process, but further the communication quality of spare frequency range and work at present frequency range is compared, with Determine whether to switch over processing.

If step 401, the first signal-to-noise ratio switch over processing less than the second signal-to-noise ratio, judgement.

In embodiments herein, low-power consumption WAN equipment determine the second signal-to-noise ratio be less than prestore signal-to-noise ratio threshold Value, and after the first signal-to-noise ratio and the second signal-to-noise ratio are compared, it is low if the first signal-to-noise ratio is less than the second signal-to-noise ratio Power consumption WAN equipment, which can be determined that, switches over processing.

Further, in embodiments herein, if spare frequency range receives biggish signal interference, low-power consumption is wide Domain net equipment continues to compare the first signal-to-noise ratio and the second signal-to-noise ratio, if the comparison result of the two is the first signal-to-noise ratio less than second Signal-to-noise ratio, then it is bigger based on signal-to-noise ratio, illustrate that mixed noise in the signal is smaller, that is, interferes this smaller reason, low-power consumption WAN equipment can determine that the corresponding communication quality of spare frequency range is even more ideal relative to work at present frequency range, therefore, low Power consumption WAN equipment, which can be determined that, switches over processing, i.e., low-power consumption WAN equipment can be by work at present frequency range by ISM Frequency range is switched to Sub-GHz frequency range.

If step 402, the first signal-to-noise ratio are more than or equal to the second signal-to-noise ratio, determine without hand-off process.

In embodiments herein, low-power consumption WAN equipment determine the second signal-to-noise ratio be less than prestore signal-to-noise ratio threshold Value, and after the first signal-to-noise ratio and the second signal-to-noise ratio are compared, if the first signal-to-noise ratio is more than or equal to the second noise Than then low-power consumption WAN equipment can be determined that without hand-off process.

Further, in embodiments herein, if spare frequency range receives biggish signal interference, low-power consumption is wide Domain net equipment continues to compare the first signal-to-noise ratio and the second signal-to-noise ratio, if the comparison result of the two be the first signal-to-noise ratio be greater than or Equal to the second signal-to-noise ratio, then it is bigger based on signal-to-noise ratio, illustrate that mixed noise in the signal is smaller, that is, interferes this smaller original Cause, low-power consumption WAN equipment can determine the corresponding communication quality of spare frequency range lower than the corresponding communication of work at present frequency range Quality, that is to say, that the spare frequency range in default frequency range receives biggish interference, and the corresponding communication quality of spare frequency range is simultaneously It is not better than work at present frequency range, therefore, low-power consumption WAN equipment can be determined that without hand-off process, but continue through Work at present frequency range, i.e. ISM band carry out wireless communication.

Based on the above embodiment, in another embodiment of the application, Fig. 3 is that the low-power consumption that the embodiment of the present application proposes is wide The composed structure schematic diagram one of domain net equipment, as shown in figure 3, the low-power consumption WAN equipment 1 that the embodiment of the present application proposes can be with Including detection unit 11, judging unit 12 and switch unit 13.

The detection unit 11, it is corresponding for detecting acquisition corresponding first signal-to-noise ratio of work at present frequency range and spare frequency range The second signal-to-noise ratio；Wherein, the spare frequency range is other frequency ranges other than in default frequency range, described work at present frequency range.

The judging unit 12, for according to first signal-to-noise ratio, second signal-to-noise ratio and prestoring signal-to-noise ratio threshold Value, judges whether to hand-off process；Wherein, the snr threshold that prestores is for the communication matter to the work at present frequency range Amount is determined.

The switch unit 13, for if it is determined that switching over processing, then according to the spare frequency range to the current work It is switched over as frequency range.

Further, in embodiments herein, the default frequency range includes Sub-GHz frequency range and ISM band.

Further, in embodiments herein, when the work at present frequency range be the Sub-GHz frequency range, it is described standby When with frequency range being the ISM band, the judging unit 12 described prestores noise if being less than specifically for first signal-to-noise ratio Than threshold value, then continue to judge whether to hand-off process according to second signal-to-noise ratio and the snr threshold that prestores；And If first signal-to-noise ratio prestores snr threshold described in being more than or equal to, determine without hand-off process.

Further, in embodiments herein, the judging unit 12, if big also particularly useful for second signal-to-noise ratio Snr threshold is prestored in or equal to described, then determines to switch over processing；And if second signal-to-noise ratio is less than described Snr threshold is prestored, then continues to judge whether to hand-off process according to first signal-to-noise ratio and second signal-to-noise ratio.

Further, in embodiments herein, the judging unit 12, if small also particularly useful for first signal-to-noise ratio In second signal-to-noise ratio, then determine to switch over processing；And if first signal-to-noise ratio is more than or equal to described second Signal-to-noise ratio then determines without hand-off process.

Further, in embodiments herein, when the work at present frequency range is the ISM band, the spare frequency When section is the Sub-GHz frequency range, the judging unit 12, if being more than or equal to institute also particularly useful for second signal-to-noise ratio It states and prestores snr threshold, then determine to switch over processing；And if second signal-to-noise ratio prestores signal-to-noise ratio threshold less than described Value then continues to judge whether to hand-off process according to first signal-to-noise ratio and second signal-to-noise ratio.

Further, in embodiments herein, the detection unit 11 is specifically used for according to prefixed time interval to institute It states work at present frequency range to be detected, obtains first signal-to-noise ratio；And according to the prefixed time interval to described spare Frequency range is detected, and second signal-to-noise ratio is obtained.

The detection unit 11, after being also used to switch over the work at present frequency range according to the spare frequency range, It repeats to obtain first signal-to-noise ratio and second signal-to-noise ratio according to the prefixed time interval.

The switch unit 13 is also used to continue to carry out frequency range according to first signal-to-noise ratio and second signal-to-noise ratio to cut It changes.

Fig. 4 is the composed structure schematic diagram two for the low-power consumption WAN equipment that the embodiment of the present application proposes, as shown in figure 4, The low-power consumption WAN equipment 1 that the embodiment of the present application proposes can also include processor 14, be stored with the executable finger of processor 14 The memory 15 of order, further, low-power consumption WAN equipment 1 can also include communication interface 16, and for connecting processor 14, the bus 17 of memory 15 and communication interface 16.

In embodiments herein, above-mentioned processor 14 can be application-specific IC (Application Specific Integrated Circuit, ASIC), digital signal processor (Digital Signal Processor, DSP), digital signal processing device (Digital Signal Processing Device, DSPD), programmable logic device (ProgRAMmable Logic Device, PLD), field programmable gate array (Field ProgRAMmable Gate Array, FPGA), central processing unit (Central Processing Unit, CPU), controller, microcontroller, microprocessor At least one of.It, can be with for realizing the electronic device of above-mentioned processor function it is to be appreciated that for different equipment To be other, the embodiment of the present application is not especially limited.Low-power consumption WAN equipment 1 can also include memory 15, the memory 15 can connect with processor 14, wherein for memory 15 for storing executable program code, which includes computer Operational order, memory 15 may include high speed RAM memory, it is also possible to further include nonvolatile memory, for example, at least two A magnetic disk storage.

In embodiments herein, bus 17 for connection communication interface 16, processor 14 and memory 15 and Being in communication with each other between these devices.

In embodiments herein, memory 15, for storing instruction and data.

Further, in embodiments herein, above-mentioned processor 14 is corresponding for detecting acquisition work at present frequency range The first signal-to-noise ratio and corresponding second signal-to-noise ratio of spare frequency range；Wherein, the spare frequency range is in default frequency range, described works as Other frequency ranges other than preceding working frequency range；According to first signal-to-noise ratio, second signal-to-noise ratio and snr threshold is prestored, Judge whether to hand-off process；Wherein, the snr threshold that prestores is for the communication quality to the work at present frequency range It is determined；If it is determined that switching over processing, then the work at present frequency range is switched over according to the spare frequency range.

In practical applications, above-mentioned memory 15 can be volatile memory (volatile memory), such as at random It accesses memory (Random-Access Memory, RAM)；Or nonvolatile memory (non-volatile memory), Such as read-only memory (Read-Only Memory, ROM), flash memory (flash memory), hard disk (Hard Disk Drive, HDD) or solid state hard disk (Solid-State Drive, SSD)；Or the combination of the memory of mentioned kind, and to place It manages device 14 and instruction and data is provided.

In addition, each functional module in the present embodiment can integrate in one processing unit, it is also possible to each list Member physically exists alone, and can also be integrated in one unit with two or more units.Above-mentioned integrated unit both can be with Using formal implementation of hardware, can also be realized in the form of software function module.

If integrated unit realizes that being not intended as independent product is sold or made in the form of software function module Used time can store in a computer readable storage medium, based on this understanding, the technical solution sheet of the present embodiment The all or part of the part that contributes to existing technology or the technical solution can be with software product in other words in matter Form embodies, which is stored in a storage medium, including some instructions are used so that a meter It calculates machine equipment (can be personal computer, server or the network equipment etc.) or processor (processor) executes this implementation The all or part of the steps of example method.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory (Read Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic or disk etc. is various to deposit Store up the medium of program code.

A kind of low-power consumption WAN equipment that the embodiment of the present application proposes, low-power consumption WAN equipment detection obtain current Corresponding first signal-to-noise ratio of working frequency range and corresponding second signal-to-noise ratio of spare frequency range；Wherein, spare frequency range is in default frequency range , other frequency ranges other than work at present frequency range；According to the first signal-to-noise ratio, the second signal-to-noise ratio and snr threshold is prestored, is sentenced It is disconnected whether to switch over processing；Wherein, snr threshold is prestored for being determined to the communication quality of work at present frequency range；If Judgement switches over processing, then is switched over according to spare frequency range to work at present frequency range.It can be seen that in the implementation of the application In example, low-power consumption WAN equipment can detect the signal-to-noise ratio for obtaining work at present frequency range and spare frequency range simultaneously, then pass through Snr threshold is prestored with including the signal-to-noise ratio for prestoring frequency range of work at present frequency range and spare frequency range to determine work at present The communication quality of frequency range further determines the switching for whether carrying out frequency range, so as between work at present frequency range and spare frequency range Reasonably switched.That is, low-power consumption WAN equipment can realize the reasonable of frequency range by the monitoring to signal-to-noise ratio Switching, so as to effectively improve the communication performance of LPWAN, promotes the communication quality of LPWAN.

The embodiment of the present application provides a kind of computer readable storage medium, is stored thereon with program, and the program is by processor Frequency band switching method as described above is realized when execution.

Specifically, the corresponding program instruction of one of the present embodiment frequency band switching method can be stored in CD, Hard disk, on the storage mediums such as USB flash disk, when the program instruction corresponding with a kind of frequency band switching method in storage medium is set by an electronics It is standby to read or be performed, include the following steps:

It should be understood by those skilled in the art that, embodiments herein can provide as method, system or computer program Product.Therefore, the shape of hardware embodiment, software implementation or embodiment combining software and hardware aspects can be used in the application Formula.Moreover, the application, which can be used, can use storage in the computer that one or more wherein includes computer usable program code The form for the computer program product implemented on medium (including but not limited to magnetic disk storage and optical memory etc.).

The application is realization of the reference according to the method, equipment (system) and computer program product of the embodiment of the present application Flow diagram and/or block diagram describe.It should be understood that flow diagram and/or box can be realized by computer program instructions The combination of each flow and/or block in figure and the process in implementation process schematic diagram and/or block diagram and/or box. These computer program instructions be can provide to general purpose computer, special purpose computer, Embedded Processor or other programmable datas The processor of processing equipment is to generate a machine, so that passing through computer or the processor of other programmable data processing devices The instruction of execution generate for realizing in one box of implementation process schematic diagram one process or multiple processes and/or block diagrams or The device for the function of being specified in multiple boxes.

These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates, The manufacture of device is enabled, which realizes in implementation process schematic diagram one process or multiple processes and/or block diagrams one The function of being specified in a box or multiple boxes.

These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or The instruction that is executed on other programmable devices provide for realizing in one process of implementation process schematic diagram or multiple processes and/or The step of function of being specified in one or more blocks of the block diagram.

The above, the only preferred embodiment of the application, are not intended to limit the protection scope of the application.

Claims

1. a kind of frequency band switching method, which is characterized in that the described method includes:

Detection obtains corresponding first signal-to-noise ratio of work at present frequency range and corresponding second signal-to-noise ratio of spare frequency range；Wherein, described Spare frequency range is other frequency ranges other than in default frequency range, described work at present frequency range；

According to first signal-to-noise ratio, second signal-to-noise ratio and snr threshold is prestored, judges whether to hand-off process； Wherein, the snr threshold that prestores is for being determined the communication quality of the work at present frequency range；

2. the method according to claim 1, wherein the default frequency range includes Sub-GHz frequency range and ISM frequency Section.

3. according to the method described in claim 2, it is characterized in that, when the work at present frequency range be the Sub-GHz frequency range, It is described according to first signal-to-noise ratio, second signal-to-noise ratio and to prestore noise when the spare frequency range is the ISM band Than threshold value, hand-off process is judged whether to, comprising:

If first signal-to-noise ratio be less than it is described prestore snr threshold, continue according to second signal-to-noise ratio and described prestore Snr threshold judges whether to hand-off process；

If first signal-to-noise ratio prestores snr threshold described in being more than or equal to, determine without hand-off process.

4. according to the method described in claim 3, it is characterized in that, described continue according to second signal-to-noise ratio and described prestore Snr threshold judges whether to hand-off process, comprising:

If second signal-to-noise ratio prestores snr threshold described in being more than or equal to, judgement switches over processing；

If second signal-to-noise ratio prestores snr threshold described in being less than, continue according to first signal-to-noise ratio and described second Signal-to-noise ratio judges whether to hand-off process.

5. according to the method described in claim 4, it is characterized in that, the continuation is according to first signal-to-noise ratio and described second Signal-to-noise ratio judges whether to hand-off process, comprising:

If first signal-to-noise ratio is less than second signal-to-noise ratio, judgement switches over processing；

If first signal-to-noise ratio is more than or equal to second signal-to-noise ratio, determine without hand-off process.

6. according to the method described in claim 2, it is characterized in that, when the work at present frequency range be the ISM band, it is described It is described according to first signal-to-noise ratio, second signal-to-noise ratio and to prestore noise when spare frequency range is the Sub-GHz frequency range Than threshold value, hand-off process is judged whether to, comprising:

7. according to the method described in claim 6, it is characterized in that, the continuation is according to first signal-to-noise ratio and described second Signal-to-noise ratio judges whether to hand-off process, comprising:

8. according to the method described in claim 1, wherein, the detection obtain corresponding first signal-to-noise ratio of work at present frequency range and Corresponding second signal-to-noise ratio of spare frequency range, comprising:

The work at present frequency range is detected according to prefixed time interval, obtains first signal-to-noise ratio；

The spare frequency range is detected according to the prefixed time interval, obtains second signal-to-noise ratio.

9. according to the method described in claim 8, it is characterized in that, it is described according to the spare frequency range to work at present frequency After section switches over, the method also includes:

It repeats to obtain first signal-to-noise ratio and second signal-to-noise ratio according to the prefixed time interval, and continues according to First signal-to-noise ratio and second signal-to-noise ratio carry out frequency range switching.

10. a kind of low-power consumption WAN equipment, which is characterized in that the low-power consumption WAN equipment includes: detection unit, judgement Unit and switch unit,

The detection unit obtains corresponding first signal-to-noise ratio of work at present frequency range and spare frequency range corresponding second for detecting Signal-to-noise ratio；Wherein, the spare frequency range is other frequency ranges other than in default frequency range, described work at present frequency range；

The judging unit judges for according to first signal-to-noise ratio, second signal-to-noise ratio and prestoring snr threshold Whether processing is switched over；Wherein, the snr threshold that prestores is for the communication quality progress to the work at present frequency range It determines；

The switch unit, for if it is determined that switching over processing, then according to the spare frequency range to the work at present frequency range It switches over.

11. low-power consumption WAN equipment according to claim 10, which is characterized in that the default frequency range includes Sub- Ghz band and ISM band.

12. low-power consumption WAN equipment according to claim 11, which is characterized in that when the work at present frequency range is institute Sub-GHz frequency range is stated, when the spare frequency range is the ISM band,

The judging unit continues if prestoring snr threshold less than described specifically for first signal-to-noise ratio according to institute It states the second signal-to-noise ratio and the snr threshold that prestores judges whether to hand-off process；And if first signal-to-noise ratio is greater than Or prestore snr threshold equal to described, then determine without hand-off process.

13. low-power consumption WAN equipment according to claim 12, which is characterized in that

The judging unit, if prestoring snr threshold more than or equal to described also particularly useful for second signal-to-noise ratio, Judgement switches over processing；And if second signal-to-noise ratio be less than it is described prestore snr threshold, continue according to described the One signal-to-noise ratio and second signal-to-noise ratio judge whether to hand-off process.

14. low-power consumption WAN equipment according to claim 13, which is characterized in that

The judging unit, if being less than second signal-to-noise ratio also particularly useful for first signal-to-noise ratio, judgement is switched over Processing；And if first signal-to-noise ratio is more than or equal to second signal-to-noise ratio, determines without hand-off process.

15. low-power consumption WAN equipment according to claim 11, which is characterized in that when the work at present frequency range is institute ISM band is stated, when the spare frequency range is the Sub-GHz frequency range,

16. low-power consumption WAN equipment according to claim 15, which is characterized in that

17. low-power consumption WAN equipment according to claim 10, which is characterized in that

The detection unit, specifically for being detected according to prefixed time interval to the work at present frequency range, described in acquisition First signal-to-noise ratio；And the spare frequency range is detected according to the prefixed time interval, obtain second signal-to-noise ratio；

The detection unit, after being also used to switch over the work at present frequency range according to the spare frequency range, repetition is pressed First signal-to-noise ratio and second signal-to-noise ratio are obtained according to the prefixed time interval；

The switch unit is also used to continue to carry out frequency range switching according to first signal-to-noise ratio and second signal-to-noise ratio.

18. a kind of low-power consumption WAN equipment, which is characterized in that the low-power consumption WAN equipment includes processor, is stored with The memory of the processor-executable instruction realizes that claim 1-9 such as appoints when described instruction is executed by the processor Method described in one.

19. a kind of computer readable storage medium, is stored thereon with program, it is applied in low-power consumption WAN equipment, feature It is, when described program is executed by processor, realizes such as the described in any item methods of claim 1-9.