CN107889138A - Communication link quality determines method, communication link system of selection and its device - Google Patents
Communication link quality determines method, communication link system of selection and its device Download PDFInfo
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- CN107889138A CN107889138A CN201610875614.3A CN201610875614A CN107889138A CN 107889138 A CN107889138 A CN 107889138A CN 201610875614 A CN201610875614 A CN 201610875614A CN 107889138 A CN107889138 A CN 107889138A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/08—Testing, supervising or monitoring using real traffic
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0852—Delays
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
- H04W40/12—Communication route or path selection, e.g. power-based or shortest path routing based on transmission quality or channel quality
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
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Abstract
The invention discloses a kind of communication link quality to determine method and apparatus, and methods described includes：Obtain the signal intensity under the standard and the standard of communication link；Obtain the current round-trip delay of the communication link；Communication quality value is calculated according to the signal intensity and the round-trip delay, to determine the communication quality of the communication link.The invention also discloses a kind of communication link system of selection and device, methods described to include：Obtain the signal intensity under the standard and each standard of multiple communication links；Obtain the current round-trip delay of each communication link；According to the communication quality value of the current round trip time-delay calculation communication link of signal intensity and the link under the standard of each bar letter link；Current communications link is selected according to the communication quality of each communication link.Using technical scheme, can be accurate the communication quality of respective communication channel be judged, and can further select the link of good communication quality to be communicated, so as to ensure that the communication quality of user.
Description
Technical field
The present invention relates to the communications field, more particularly to a kind of communication link quality to determine method and apparatus.
Background technology
In communication terminal, it is often necessary to use multiple communication links.Such as in the mobile phone using multiple SIM card, use
Each SIM card, which is communicated, possibly uses the communication link of different operators, and the communication quality of obstructed communication link
It is different.Inventor has found during the present invention is realized, there is no effectively the communication quality of each communication link is entered at present
Row detection and evaluation, each communication link is judged to determine communication chain using intelligence by random selection or rough parameter
The use on road, it is easy to use the bad communication link of communication quality as current communications link, the quality and effect of communication
It is all poor.
The content of the invention
The defects of for prior art, the purpose of the embodiment of the present invention be to provide can accurate judgement link communication quality,
And then the method and apparatus that selection is carried out in a plurality of data link.
The embodiments of the invention provide a kind of communication link quality to determine method.Methods described includes：Obtain communication link
Standard and the standard under signal intensity；Obtain the current round-trip delay of the communication link；According to the signal intensity
Communication quality value is calculated with the round-trip delay, to determine the communication quality of the communication link.
In a kind of optional embodiment, the communication quality value and current signal strength value are proportional, and communication quality
Value and current round trip time delay are in inverse ratio.
In a kind of optional embodiment, according to signal intensity under the standard and the current round trip time delay meter of the link
Calculating communication quality value is：
Communication quality value=((current signal strength value-smin)/(smax-smin)) * fmax/ (2^ (rtt*tol)),
Wherein, fmax is the maximum rate under the communication standard；Smax is the setting maximum of signal intensity；smin
For the setting minimum value of signal intensity；Rtt is round-trip delay；Tol is tolerance factor.
In a kind of optional embodiment, the standard is any one of GSM, CDMA, 3G, 4G.
The embodiment of the present invention additionally provides a kind of communication link system of selection, and methods described includes：Obtain a plurality of communication chain
Signal intensity under the standard on road and each standard；Obtain the current round-trip delay of each communication link；According to each bar letter link
Standard under the current round trip time-delay calculation communication link of signal intensity and the link communication quality value；Led to according to each bar
Believe the communication quality selection current communications link of link.
In a kind of optional embodiment, the communication quality value and current signal strength value are proportional, and communication quality
Value and current round trip time delay are in inverse ratio.
In a kind of optional embodiment, according to signal intensity under the standard and the current round trip time delay meter of the link
Calculating communication quality value is：
Communication quality value=((current signal strength value-smin)/(smax-smin)) * fmax/ (2^ (rtt*tol)),
Wherein, fmax is the maximum rate under the communication standard；Smax is the setting maximum of signal intensity；Smin is
The setting minimum value of signal intensity；Rtt is round-trip delay；Tol is tolerance factor.
In a kind of optional embodiment, the multiple communication links include any one of GSM, CDMA, 3G, 4G or
It is several.
The embodiments of the invention provide a kind of communication link quality determining device, described device includes：Standard acquiring unit,
Signal intensity acquiring unit, round-trip delay acquiring unit, communication quality computing unit.Wherein：Standard acquiring unit is used to obtain
The standard of communication link；Signal intensity acquiring unit is used to obtain the signal intensity under the standard；Round-trip delay acquiring unit
The round-trip delay current for obtaining the communication link；Communication quality computing unit is used for according to signal intensity under the standard
With the current round trip time-delay calculation communication quality value of the link, to determine the communication quality of the communication link.
In a kind of optional embodiment, the communication quality value and current signal strength value are proportional, and communication quality
Value and current round trip time delay are in inverse ratio.
In a kind of optional embodiment, communication quality computing unit calculates communication quality value according to following formula：
Communication quality value=((current signal strength value-smin)/(smax-smin)) * fmax/ (2^ (rtt*tol)),
Wherein, fmax is the maximum rate under the communication standard；Smax is the setting maximum of signal intensity；Smin is
The setting minimum value of signal intensity；Rtt is round-trip delay；Tol is tolerance factor.
In a kind of optional embodiment, the standard is any one of GSM, CDMA, 3G, 4G.
The embodiments of the invention provide a kind of communication link selection device, described device includes：Standard acquiring unit, signal
Intensity acquiring unit, round-trip delay acquiring unit, communication quality computing unit, link selection unit.Wherein：Standard acquiring unit
For obtaining the standard of multiple communication links；Signal intensity acquiring unit is used to obtain the signal intensity under the standard；Come and go
Time delay acquiring unit is used to obtain the current round-trip delay of the communication link；Communication quality computing unit is used for according to described each
The communication quality value of the current round trip time-delay calculation communication link of signal intensity and the link under the standard of bar letter link；Chain
Road selecting unit is used to select current communications link according to the communication quality of each communication link.
In a kind of optional embodiment, the communication quality value and current signal strength value are proportional, and communication quality
Value and current round trip time delay are in inverse ratio.
In a kind of optional embodiment, communication quality computing unit calculates communication quality value according to following formula：
Communication quality value=((current signal strength value-smin)/(smax-smin)) * fmax/ (2^ (rtt*tol)),
Wherein, fmax is the maximum rate under the communication standard；Smax is the setting maximum of signal intensity；Smin is
The setting minimum value of signal intensity；Rtt is round-trip delay；Tol is tolerance factor.
In a kind of optional embodiment, the standard is any one of GSM, CDMA, 3G, 4G.
Using the technical scheme of the embodiment of the present invention, using the standard, signal intensity and round-trip delay of communication link to logical
The communication quality of letter link is calculated, and can be accurate judges the communication quality of respective communication channel, and can enter one
The link of step selection good communication quality is communicated, so as to ensure that the communication quality of user.
Brief description of the drawings
Fig. 1 is the flow chart of the communication link quality detection method of first embodiment of the invention；
Fig. 2 is the flow chart of the communication link quality detection method of second embodiment of the invention；
Fig. 3 is the flow chart of the communication link quality detection method of third embodiment of the invention；
Fig. 4 is the structured flowchart of the communication link quality detection means of fourth embodiment of the invention；
Fig. 5 is the flow chart of the communication link system of selection of seventh embodiment of the invention；
Fig. 6 is the structured flowchart of the communication link selection device of tenth embodiment of the invention；
Fig. 7 is the structured flowchart of the electronic equipment of thriteenth embodiment of the invention；
Fig. 8 is the structured flowchart of the electronic equipment of fourteenth embodiment of the invention.
Embodiment
First embodiment
Present embodiments provide a kind of communication link quality and determine method, the described method comprises the following steps：
Step 110, the signal intensity under the standard and the standard of communication link is obtained.
By taking cell phone network as an example, the standard of communication link is mainly including GSM, CDMA, 3G, 4G etc..Such as：China Mobile adopts
With standards such as GSM (2G)/TD-SCDMA (3G)/TD-LTE (4G)；CHINAUNICOM uses GSM (2G)/WCDMA (3G)/TD-LTE
The standards such as (4G)/FDD-LTE (4G)；China Telecom uses CDMA1X (2G)/EVDO (3G)/TD-LTE (4G)/FDD-LTE (4G)
Etc. standard.
The acquisition of standard, it can be realized by reading the information of the module to be communicated on mobile phone with base station.Read system
Formula can be realized by way of AT orders.The acquisition of standard is AT^SYSINFO or AT^SYSINFOEX.The standard
The acquisition of lower signal intensity, the acquisition of signal intensity can be obtained by AT orders AT+CSQ.
Step 120, the current round-trip delay of the communication link is obtained.
Round-trip delay, i.e. rtt (Round-Trip Time).Round-trip delay is an important network performance index, is represented
Since transmitting terminal sends data, receiving the confirmation from receiving terminal to transmitting terminal, (receiving terminal can be sent immediately after receiving data
Confirm) time delay that undergoes altogether.
In the present embodiment, the detection to round-trip delay can be completed on the mobile phone as intermediate equipment.That is,
One mobile phone opens focus as intermediate equipment, and other network equipments access the intermediate equipment by WLAN, by among this
Equipment interacts with the server on network.
This is the signalling interactive process of TCP establishment stage, it is assumed that link-quality detection algorithm is operated in as in
Between equipment mobile phone on.When mobile phone receives the syn messages of client transmissions, one time A of mark is another receiving
One time B of mark, B-A then obtain a time delay rtt again when one ack corresponding with syn.And for receive from
The ack that syn and client that server is sent are sent then not timing statisticses, because：Between client and intermediate equipment
For link without the internet of complexity, but local network WLAN, rtt is very small, therefore can be ignored.
In the signalling interactive process of TCP stop phase, rtt can also be detected.It is similar with establishment stage, receiving
From the FIN that client is sent when, one time A of mark, when corresponding A CK is received, in one time B of mark, B-A
Then obtain another time delay rtt.And for receiving from the ack that the server fin sent and client are sent without counting,
Because the link between client and intermediate equipment is without complicated internet, but local network, delay can be very small,
So ignore.
Rtt can obtain rtt twice by TCP handshake procedures (i.e. TCP is established and TCP terminates), can take certain once
As a result rtt is used as, final result of the average value twice as this step can also be taken.
And in other embodiments, if the mobile phone as local device directly interacts with the webserver, then rtt can
To be got by ip tcp_metrics orders, such as：
jm@Luck-sir:~$ ip tcp_metrics
162.213.33.50age 5391.544sec
111.202.102.38age 1799.560sec rtt 2875us rttvar 2750us cwnd 10
111.202.102.39age 1799.576sec rtt 5000us rttvar 5000us cwnd 10
123.126.51.32age 1799.540sec rtt 2500us rttvar 2500us cwnd 10
123.126.51.33age 1799.552sec rtt 2750us rttvar 2750us cwnd 10
123.125.46.141age 1798.480sec rtt 2375us rttvar 2250us cwnd 10
111.202.99.141age 1799.004sec rtt 15750us rttvar 15750us cwnd 10
172.16.7.7age 1467.388sec
Step 130, according to signal intensity under the standard and the current round trip time-delay calculation communication quality value of the link,
To determine the communication quality of the communication link.Calculating for the communication quality value can use a variety of suitable algorithms to realize,
The correlation of following physical quantity is should be ensured that in the calculating of communication quality value：The communication matter of the higher link of signal intensity
Amount is more preferable；The communication quality of the lower link of current round trip time delay is better.
Using the technical scheme of the present embodiment, by calculating communication quality value, the current logical of communication link is determined
Believe quality, user is understood the situation of current communications link in time, and can be that subsequently link is made
Reference is provided with selection.
Second embodiment
The present embodiment is on the basis of first embodiment, for working as according to signal intensity under the standard and the link
The step of preceding round time-delay calculation communication quality value, provides a kind of optional technical scheme.
Comprise the following steps in the present embodiment：
Step 210, the signal intensity under the standard and the standard of communication link is obtained.
Step 220, the current round-trip delay of the communication link is obtained.
Step 230, according to signal intensity under the communication standard and the current round trip time-delay calculation of link communication matter
Value.Concretely comprise the following steps：
Communication quality value=((current signal strength value-smin)/(smax-smin)) * fmax/ (2^ (rtt*tol)),
Wherein, fmax is the maximum rate under the communication standard；Smax is the setting maximum of signal intensity, and unit is
dbm；Smin is the setting minimum value of signal intensity, and unit is dbm；Rtt is round-trip delay, and unit is ms；Tol for tolerance because
Son.The unit of current signal strength value is dbm.
Illustrate the calculating to communication quality value below by specific example.
Because the peak-peak of the network of each operator and standard differs, and the result finally calculated is multiplex roles
Relative ratio, so for convenience calculate, following maximum rate fmax might as well be assume that：
Maximum rate fmax under 4G:1000Mbps；
Maximum rate fmax under 3G:50Mbps；
Maximum rate fmax under 2G:10Mbps.
For standard GSM/3G/HSPA, the scope of signal intensity is as follows：
Therefore, the range of signal of the standard may be considered [- 110,0].Signal value is bigger, then signal is stronger.In this reality
Apply in example, for the ease of calculating, current signal strength value under 3G standards can be done to a conversion, value 110+rssi；And
And smax is set as 40, smin 0,
For LTE (4G), the scope of signal intensity is as follows：
Therefore range of signal can consider [- 120,0], similarly, current signal strength value under 4G standards is done into one and turned
Change：120+rsrp, and smax is arranged to 30, smin 0.
Wherein, RSSI is the signal strength values under 3G standards；RSRP is the signal strength values under 4G standards.
By taking 3G standards as an example, range of signal is calculated as follows：
Work as rssi>During -70dbm, calculated to be easy, (current signal strength value-smin)/(smax-smin) is 1；
Work as rssi<During -110dbm, calculated to be easy, (current signal strength value-smin)/(smax-smin) is 0；
As -110≤rssi≤- 70dbm, such as rssi value is -85dbm, then is calculated as follows：
(110+rssi-0)/(30-0)*fmax/(2^(rtt*tol))
Communication quality value=25/30*fmax/ (2^ (rtt*tol))
By taking 4G standards as an example, range of signal is calculated as follows：
Work as rsrp>When -90, (current signal strength value-smin)/(smax-smin)=1；
Work as rsrp<When -120, (current signal strength value-smin)/(smax-smin)=0；
As -120≤rssi≤- 90dbm, such as rsrp value is -98, then is calculated as follows：
(120+rssi-0)/(30-0)*fmax/(2^(rtt*tol))
Communication quality value=22/30*fmax/ (2^ (rtt*tol))
Rtt unit is ms, according to statistics, the minimum 300ms of sensitive and reactive speed of user, so denominator is calculated as follows：
When rtt is less than 300ms：
Denominator (2^ (rtt*tol)) is 1
When rtt is more than 300ms, tol is set to 1/20, is calculated as follows：
(2^ (rtt*tol))=2^ ((rtt -300) * 1/20)
In the present embodiment, communication quality value is inversely proportional with 2^ (rtt*tol).Because rtt numerical value leads to for network
Believe that the reaction of quality is relatively slow, in this embodiment, it is desirable in rtt when changing, energy fast reaction is logical
Believe on mass value, by tentative calculation repeatedly, rtt is converted into the index that the truth of a matter is 2, such result of calculation can be more rightly anti-
Mirror the change of network communication quality.
3rd embodiment
The present embodiment is on the basis of first embodiment, for working as according to signal intensity under the standard and the link
The step of preceding round time-delay calculation communication quality value, provides a kind of optional technical scheme.
Comprise the following steps in the present embodiment：
Step 310, the signal intensity under the standard and the standard of communication link is obtained.
Step 320, the current round-trip delay of the communication link is obtained.
Step 330, according to signal intensity under the standard and the current round trip time-delay calculation communication quality value of the link,
To determine the communication quality of the communication link.The communication quality value and current signal strength value are proportional, and communication quality
Value and current round trip time delay are in inverse ratio.
Communication quality value=current signal strength value/rtt
Because the communication quality of the higher link of signal intensity is more preferable；The communication quality of the lower link of current round trip time delay
It is better, therefore.Using the technical scheme of the present embodiment, the change of network communication quality can be reflected by simple calculation
Change.
Fourth embodiment
Correspondingly, present invention also offers a kind of communication link quality determining device, described device to include：Standard obtains single
Member 410, signal intensity acquiring unit 420, round-trip delay acquiring unit 430, communication quality computing unit 440.Wherein：
Standard acquiring unit 410 is used for the standard for obtaining communication link.Standard acquiring unit 410 can be by reading mobile phone
The upper module to be communicated with base station is realized with AT instruction repertories unit, i.e. reading standard can be by way of AT order
To read.The acquisition of standard is AT^SYSINFO or AT^SYSINFOEX.The acquisition of signal intensity under the standard.
Signal intensity acquiring unit 420 is used to obtain the signal intensity under the standard.Signal intensity acquiring unit 420 can
To be realized by AT instruction repertories unit, the acquisition of signal intensity can be obtained by AT orders AT+CSQ
Round-trip delay acquiring unit 430 is used to obtain the current round-trip delay of the communication link.Round-trip delay represent from
Transmitting terminal sends data and started, and receiving the confirmation from receiving terminal to transmitting terminal, (receiving terminal can be sent really immediately after receiving data
Recognize) time delay that undergoes altogether.Therefore, round-trip delay acquiring unit 430 should include timer, and number is sent for adding up transmitting terminal
According to beginning, the time of the confirmation from receiving terminal is received to transmitting terminal.Such as：In TCP establishment stage, it is assumed that round-trip delay obtains
Unit 430 is taken to be arranged on the mobile phone as intermediate equipment.When mobile phone receives the syn messages of client transmissions, meter
When device start, and one time A of mark, one time B of mark again when another ack corresponding with syn is received,
Timer stops, and calculates B-A and then obtains a time delay rtt.
Communication quality computing unit 440 is used for the current round trip time delay according to signal intensity under the standard and the link
Communication quality value is calculated, to determine the communication quality of the communication link.The calculating of the communication quality value can use a variety of
Suitable algoritic module realizes that the realization of communication quality value computing module should be ensured that the correlation of following physical quantity：Signal
The communication quality of the higher link of intensity is more preferable；The communication quality of the lower link of current round trip time delay is better.
Using the technical scheme of the present embodiment, by calculating communication quality value, the current logical of communication link is determined
Believe quality, user is understood the situation of current communications link in time, and can be that subsequently link is made
Reference is provided with selection.
5th embodiment
The present embodiment provides a kind of optional technology on the basis of fourth embodiment, for communication quality computing unit
Scheme.Communication quality computing unit is realized according to below equation：
Communication quality value=((current signal strength value-smin)/(smax-smin)) * fmax/ (2^ (rtt*tol)),
Wherein, fmax is the maximum rate under the communication standard；Smax is the setting maximum of signal intensity, and unit is
dbm；Smin is the setting minimum value of signal intensity, and unit is dbm；Rtt is round-trip delay, and unit is ms；Tol for tolerance because
Son.The unit of current signal strength value is dbm.
Calculating in specific communication quality value, the calculating process being referred in second embodiment, will not be repeated here.
In order to realize above-mentioned calculating process, communication quality computing unit needs to include corresponding multiplier, adder etc. to patrol
Collect unit.
In the present embodiment, communication quality value is inversely proportional with 2^ (rtt*tol).Because rtt numerical value leads to for network
Believe that the reaction of quality is relatively slow, in this embodiment, it is desirable in rtt when changing, energy fast reaction is logical
Believe on mass value, by tentative calculation repeatedly, rtt is converted into the index that the truth of a matter is 2, such result of calculation can be more rightly anti-
Mirror the change of network communication quality.
Sixth embodiment
The present embodiment provides a kind of optional technology on the basis of fourth embodiment, for communication quality computing unit
Scheme.Communication quality computing unit is realized according to below equation：
Communication quality value=current signal strength value/rtt
Because the communication quality of the higher link of signal intensity is more preferable；The communication quality of the lower link of current round trip time delay
It is better, therefore.Using the technical scheme of the present embodiment, the change of network communication quality can be reflected by simple calculation
Change.
7th embodiment
Present invention also offers a kind of communication link system of selection, methods described includes：
Step 710, the signal intensity under the standard and each standard of multiple communication links is obtained.In the present embodiment, user
Need to be selected in multilink, for example, being provided with multiple SIM for being applied to different operators on the mobile phone of user, be
The communication quality of evaluation and test each communication link is, it is necessary to which the signal under gathering the standard and corresponding standard of each communication link is strong
Degree.
Step 720, the current round-trip delay of each communication link is obtained.
Step 730, the current round trip time delay meter of signal intensity and the link under the standard of link is believed according to each bar
Calculate the communication quality value of communication link.
It is equal for the acquisition of the standard of each communication link, signal intensity, round-trip delay, the calculating of communication quality value above
The process of first embodiment is referred to, will not be repeated here.
Step 740, current communications link is selected according to the communication quality of each communication link.In this step, according to step
The rapid 730 each communication quality values being calculated, select the best communication link of wherein communication quality and are communicated.In this implementation
In example, communication quality value one communication link of the highest communication link best as communication quality is selected.
Using the technical scheme of the present embodiment, the communication quality of each bar communication channel can be accurate be judged, and can
Further to select the link of good communication quality to be communicated, so as to ensure that the communication quality of user.
8th embodiment
The present embodiment is on the basis of the 7th embodiment, and a kind of optional skill is provided for communication quality computing unit
Art scheme.Communication quality computing unit is realized according to below equation：
Communication quality value=((current signal strength value-smin)/(smax-smin)) * fmax/ (2^ (rtt*tol)),
Wherein, fmax is the maximum rate under the communication standard；Smax is the setting maximum of signal intensity, and unit is
dbm；Smin is the setting minimum value of signal intensity, and unit is dbm；Rtt is round-trip delay, and unit is ms；Tol for tolerance because
Son.The unit of current signal strength value is dbm.
Calculating in specific communication quality value, the calculating process being referred in second embodiment, will not be repeated here.
In order to realize above-mentioned calculating process, communication quality computing unit needs to include corresponding multiplier, adder etc. to patrol
Collect unit.
In the present embodiment, communication quality value is inversely proportional with 2^ (rtt*tol).Because rtt numerical value leads to for network
Believe that the reaction of quality is relatively slow, in this embodiment, it is desirable in rtt when changing, energy fast reaction is logical
Believe on mass value, by tentative calculation repeatedly, rtt is converted into the index that the truth of a matter is 2, such result of calculation can be more rightly anti-
Mirror the change of network communication quality.
9th embodiment
The present embodiment is on the basis of the 7th embodiment, and a kind of optional skill is provided for communication quality computing unit
Art scheme.Communication quality computing unit is realized according to below equation：
Communication quality value=current signal strength value/rtt
Because the communication quality of the higher link of signal intensity is more preferable；The communication quality of the lower link of current round trip time delay
It is better, therefore.Using the technical scheme of the present embodiment, the change of network communication quality can be reflected by simple calculation
Change.
Tenth embodiment
The invention provides a kind of communication link selection device, described device includes：Standard acquiring unit 1010, signal are strong
Acquiring unit 1020, round-trip delay acquiring unit 1030, communication quality computing unit 1040, link selection unit 1050 are spent, its
In：
Standard acquiring unit 1010 is used for the standard for obtaining communication link.Standard acquiring unit 410 can be by reading hand
The module to be communicated on machine with base station is realized with AT instruction repertories unit, i.e. the side of AT orders can be passed through by reading standard
Formula is read.The acquisition of standard is AT^SYSINFO or AT^SYSINFOEX.The acquisition of signal intensity under the standard.
Signal intensity acquiring unit 1020 is used to obtain the signal intensity under the standard.Signal intensity acquiring unit 420
It can be realized by AT instruction repertories unit, the acquisition of signal intensity can be obtained by AT orders AT+CSQ
Round-trip delay acquiring unit 1030 is used to obtain the current round-trip delay of the communication link.Round-trip delay represent from
Transmitting terminal sends data and started, and receiving the confirmation from receiving terminal to transmitting terminal, (receiving terminal can be sent really immediately after receiving data
Recognize) time delay that undergoes altogether.Therefore, round-trip delay acquiring unit 430 should include timer, and number is sent for adding up transmitting terminal
According to beginning, the time of the confirmation from receiving terminal is received to transmitting terminal.Such as：In TCP establishment stage, it is assumed that round-trip delay obtains
Unit 430 is taken to be arranged on the mobile phone as intermediate equipment.When mobile phone receives the syn messages of client transmissions, meter
When device start, and one time A of mark, one time B of mark again when another ack corresponding with syn is received,
Timer stops, and calculates B-A and then obtains a time delay rtt.
When communication quality computing unit 1040 is used for according to signal intensity under the standard and the current round trip of the link
Prolong and calculate communication quality value, to determine the communication quality of the communication link.The calculating of the communication quality value can use more
The suitable algoritic module of kind realizes that the realization of communication quality value computing module should be ensured that the correlation of following physical quantity：Letter
The communication quality of number higher link of intensity is more preferable；The communication quality of the lower link of current round trip time delay is better.
Link selection unit 1050 is used to select a wherein conduct currently to lead to according to the communication quality of each communication link
Believe link.Each communication quality value that link selection unit 1050 is calculated according to communication quality computing unit 1040, is selected
The wherein best communication link of communication quality is communicated.In the present embodiment, one communication of communication quality value highest is selected
The link communication link best as communication quality.
Using the technical scheme of the present embodiment, the communication quality of each bar communication channel can be accurate be judged, and can
Further to select the link of good communication quality to be communicated, so as to ensure that the communication quality of user.
11st embodiment
The present embodiment is on the basis of the tenth embodiment, and a kind of optional skill is provided for communication quality computing unit
Art scheme.Communication quality computing unit is realized according to below equation：
Communication quality value=((current signal strength value-smin)/(smax-smin)) * fmax/ (2^ (rtt*tol)),
Wherein, fmax is the maximum rate under the communication standard；Smax is the setting maximum of signal intensity, and unit is
dbm；Smin is the setting minimum value of signal intensity, and unit is dbm；Rtt is round-trip delay, and unit is ms；Tol for tolerance because
Son.The unit of current signal strength value is dbm.
Calculating in specific communication quality value, the calculating process being referred in second embodiment, will not be repeated here.
In order to realize above-mentioned calculating process, communication quality computing unit needs to include corresponding multiplier, adder etc. to patrol
Collect unit.
In the present embodiment, communication quality value is inversely proportional with 2^ (rtt*tol).Because rtt numerical value leads to for network
Believe that the reaction of quality is relatively slow, in this embodiment, it is desirable in rtt when changing, energy fast reaction is logical
Believe on mass value, by tentative calculation repeatedly, rtt is converted into the index that the truth of a matter is 2, such result of calculation can be more rightly anti-
Mirror the change of network communication quality.
12nd embodiment
The present embodiment is on the basis of the tenth embodiment, and a kind of optional skill is provided for communication quality computing unit
Art scheme.Communication quality computing unit is realized according to below equation：
Communication quality value=current signal strength value/rtt
Because the communication quality of the higher link of signal intensity is more preferable；The communication quality of the lower link of current round trip time delay
It is better, therefore.Using the technical scheme of the present embodiment, the change of network communication quality can be reflected by simple calculation
Change.
13rd embodiment
The embodiment of the present invention proposes a kind of electronic equipment, and the electronic equipment includes：
At least one processor 1301；And
The memory 1302 being connected with least one processor communication；Wherein,
The storage of memory 1302 can be instructed by least one computing device by the instruction of a computing device, so that
At least one processor 1301 can：
Obtain the signal intensity under the standard and the standard of communication link；
Obtain the current round-trip delay of the communication link；
Communication quality value is calculated according to the signal intensity and the round-trip delay, to determine the communication of the communication link
Quality.
Input unit 1303 can receive the numeral or character information of input, and produce and communication link quality determining device
User set and function control it is relevant key signals input.Output device 1304 may include the display devices such as display screen.
14th embodiment
The embodiment of the present invention proposes a kind of electronic equipment, and the electronic equipment includes：
At least one processor 1401；And
The memory 1402 being connected with least one processor communication；Wherein,
The storage of memory 1402 can be instructed by least one computing device by the instruction of a computing device, so that
At least one processor 1401 can：
Obtain the signal intensity under the standard and each standard of multiple communication links；
Obtain the current round-trip delay of each communication link；
Communicated according to the current round trip time-delay calculation bar of signal intensity and the link under the standard of each bar letter link
The communication quality value of link；
Wherein one, which is selected, according to the communication quality of each communication link is used as current communications link.
Input unit 1403 can receive the numeral or character information of input, and produce the use with communication link selection device
The key signals input that family is set and function control is relevant.Output device 1404 may include the display devices such as display screen.
15th embodiment
The embodiment of the present invention proposes a kind of computer program product, and computer program product includes being stored in non-transient calculating
Calculation procedure on machine readable storage medium storing program for executing, computer program include programmed instruction, when programmed instruction is computer-executed, make
Computer performs：
Obtain the signal intensity under the standard and the standard of communication link；
Obtain the current round-trip delay of the communication link；
Communication quality value is calculated according to the signal intensity and the round-trip delay, to determine the communication of the communication link
Quality.
16th embodiment
The embodiment of the present invention proposes a kind of computer program product, and computer program product includes being stored in non-transient calculating
Calculation procedure on machine readable storage medium storing program for executing, computer program include programmed instruction, when programmed instruction is computer-executed,
Perform computer：
Obtain the signal intensity under the standard and each standard of multiple communication links；
Obtain the current round-trip delay of each communication link；
Communicated according to the current round trip time-delay calculation bar of signal intensity and the link under the standard of each bar letter link
The communication quality value of link；
Wherein one, which is selected, according to the communication quality of each communication link is used as current communications link.
17th embodiment
The embodiment of the present invention proposes a kind of non-transient computer readable storage medium storing program for executing, the non-transient computer readable storage
Medium storing computer instructs, and the computer instruction is used to perform the computer：
Obtain the signal intensity under the standard and the standard of communication link；
Obtain the current round-trip delay of the communication link；
Communication quality value is calculated according to the signal intensity and the round-trip delay, to determine the communication of the communication link
Quality.
18th embodiment
The embodiment of the present invention proposes a kind of non-transient computer readable storage medium storing program for executing, the non-transient computer readable storage
Medium storing computer instructs, and the computer instruction is used to perform the computer：
Obtain the signal intensity under the standard and each standard of multiple communication links；
Obtain the current round-trip delay of each communication link；
Communicated according to the current round trip time-delay calculation bar of signal intensity and the link under the standard of each bar letter link
The communication quality value of link；
Wherein one, which is selected, according to the communication quality of each communication link is used as current communications link.
One of ordinary skill in the art will appreciate that realize all or part of flow in above-described embodiment method, being can be with
The hardware of correlation is instructed to complete by computer program, described program can be stored in computer read/write memory medium.
Program during execution, it may include such as the flow of the embodiment of above-mentioned each method.Wherein, described storage medium can be magnetic disc, light
Disk, read-only memory (Read-Only Memory, ROM) or random access memory (Random Access
Memory, RAM) etc..
Based on such understanding, what the technical scheme of the embodiment of the present invention substantially contributed to prior art in other words
Part or the part of the technical scheme can be embodied in the form of software product, and the computer software product is stored in one
In individual storage medium, including some instructions are make it that a mobile terminal (can be personal computer, server, or net
Network equipment etc.) perform all or part of step of each embodiment methods described of the present invention.And foregoing storage medium includes：U
Disk, mobile hard disk, read-only storage (ROM, Read-Only Memory), random access memory (RAM, Random Access
Memory), magnetic disc or CD etc. are various can be with the medium of store program codes.
Device embodiment described above is only schematical, wherein the unit illustrated as separating component can
To be or may not be physically separate, it can be as the part that unit is shown or may not be physics list
Member, you can with positioned at a place, or can also be distributed on multiple NEs.It can be selected according to the actual needs
In some or all of module realize the purpose of scheme of the embodiment of the present invention.Those of ordinary skill in the art are not paying wound
In the case of the work for the property made, you can to understand and implement.
Through the above description of the embodiments, those skilled in the art can be understood that each embodiment can
Realized by the mode of software plus required general hardware platform, naturally it is also possible to realized by hardware.Based on such reason
Solution, the part that above-mentioned technical proposal substantially contributes to prior art in other words can be embodied in the form of software product
Coming, the computer software product can store in a computer-readable storage medium, such as ROM/RAM, magnetic disc, CD, including
Some instructions are each to cause a computer equipment (can be personal computer, server, or network equipment etc.) execution
Method described in some parts of individual embodiment or embodiment.
Finally it should be noted that：Embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；
Although the present invention is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：Its according to
The technical scheme described in foregoing embodiments can so be modified, or which part technical characteristic is equally replaced
Change；And these modifications or replacement, the essence of appropriate technical solution is departed from the model of various embodiments of the present invention technical scheme
Enclose.
Claims (16)
1. a kind of communication link quality determines method, it is characterised in that methods described includes：
Obtain the signal intensity under the standard and the standard of communication link；
Obtain the current round-trip delay of the communication link；
Communication quality value is calculated according to the signal intensity and the round-trip delay, to determine the communication matter of the communication link
Amount.
2. according to the method for claim 1, it is characterised in that the communication quality value is with current signal strength value in just
Than, and communication quality value and current round trip time delay are in inverse ratio.
3. according to the method for claim 1, it is characterised in that according to working as signal intensity under the standard and the link
Preceding round time-delay calculation communication quality value is：
Communication quality value=((current signal strength value-smin)/(smax-smin)) * fmax/ (2^ (rtt*tol)),
Wherein, fmax is the maximum rate under the communication standard；Smax is the setting maximum of signal intensity；Smin is signal
The setting minimum value of intensity；Rtt is round-trip delay；Tol is tolerance factor.
4. according to the method described in any one in claim 1-3, it is characterised in that the standard is GSM, CDMA, 3G, 4G
Any one of.
5. a kind of communication link system of selection, it is characterised in that methods described includes：
Obtain the signal intensity under the standard and each standard of multiple communication links；
Obtain the current round-trip delay of each communication link；
According to the current round trip time-delay calculation communication link of signal intensity and the link under the standard of each bar letter link
Communication quality value；
Current communications link is selected according to the communication quality of each communication link.
6. according to the method for claim 5, it is characterised in that the communication quality value is with current signal strength value in just
Than, and communication quality value and current round trip time delay are in inverse ratio.
7. according to the method for claim 5, it is characterised in that according to working as signal intensity under the standard and the link
Preceding round time-delay calculation communication quality value is：
Communication quality value=((current signal strength value-smin)/(smax-smin)) * fmax/ (2^ (rtt*tol)),
Wherein, fmax is the maximum rate under the communication standard；Smax is the setting maximum of signal intensity；Smin is signal
The setting minimum value of intensity；Rtt is round-trip delay；Tol is tolerance factor.
8. according to the method described in any one in claim 5-7, it is characterised in that the multiple communication links include GSM,
Any one of CDMA, 3G, 4G or several.
9. a kind of communication link quality determining device, it is characterised in that described device includes：Standard acquiring unit, signal intensity
Acquiring unit, round-trip delay acquiring unit, communication quality computing unit, wherein：
Standard acquiring unit is used for the standard for obtaining communication link；
Signal intensity acquiring unit is used to obtain the signal intensity under the standard；
Round-trip delay acquiring unit is used to obtain the current round-trip delay of the communication link；
Communication quality computing unit is used to be led to according to the current round trip time-delay calculation of signal intensity under the standard and the link
Mass value is believed, to determine the communication quality of the communication link.
10. device according to claim 9, it is characterised in that the communication quality value is with current signal strength value in just
Than, and communication quality value and current round trip time delay are in inverse ratio.
11. device according to claim 9, it is characterised in that communication quality computing unit calculates communication matter according to following formula
Value：
Communication quality value=((current signal strength value-smin)/(smax-smin)) * fmax/ (2^ (rtt*tol)),
Wherein, fmax is the maximum rate under the communication standard；Smax is the setting maximum of signal intensity；Smin is signal
The setting minimum value of intensity；Rtt is round-trip delay；Tol is tolerance factor.
12. according to the device described in any one in claim 9-11, it is characterised in that the standard be GSM, CDMA, 3G,
Any one of 4G.
13. a kind of communication link selection device, it is characterised in that described device includes：Standard acquiring unit, signal intensity obtain
Unit, round-trip delay acquiring unit, communication quality computing unit, link selection unit, wherein：
Standard acquiring unit is used for the standard for obtaining multiple communication links；
Signal intensity acquiring unit is used to obtain the signal intensity under the standard；
Round-trip delay acquiring unit is used to obtain the current round-trip delay of the communication link；
Signal intensity and working as the link, go under standard of the communication quality computing unit for believing link according to each bar
Return the communication quality value of time-delay calculation communication link；
Link selection unit is used to select current communications link according to the communication quality of each communication link.
14. device according to claim 13, it is characterised in that the communication quality value is with current signal strength value in just
Than, and communication quality value and current round trip time delay are in inverse ratio.
15. device according to claim 13, it is characterised in that communication quality computing unit calculates communication matter according to following formula
Value：
Communication quality value=((current signal strength value-smin)/(smax-smin)) * fmax/ (2^ (rtt*tol)),
Wherein, fmax is the maximum rate under the communication standard；Smax is the setting maximum of signal intensity；Smin is signal
The setting minimum value of intensity；Rtt is round-trip delay；Tol is tolerance factor.
16. according to the device described in any one in claim 13-15, it is characterised in that the standard be GSM, CDMA,
Any one of 3G, 4G.
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