CN109413701A - A kind of VoLTE business switch method and system - Google Patents
A kind of VoLTE business switch method and system Download PDFInfo
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- CN109413701A CN109413701A CN201710695740.5A CN201710695740A CN109413701A CN 109413701 A CN109413701 A CN 109413701A CN 201710695740 A CN201710695740 A CN 201710695740A CN 109413701 A CN109413701 A CN 109413701A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
- H04W36/0085—Hand-off measurements
- H04W36/0088—Scheduling hand-off measurements
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
- G10L25/48—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 specially adapted for particular use
- G10L25/51—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 specially adapted for particular use for comparison or discrimination
- G10L25/60—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 specially adapted for particular use for comparison or discrimination for measuring the quality of voice signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
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Abstract
The present invention provides a kind of VoLTE business switch method, comprising: S1, is based on preset voice quality detection algorithm, calculates user in the voice quality of Target cell, wherein the Target cell includes current area and several adjacent cells；If the voice quality of S2, user in current area is lower than the first preset threshold, the highest adjacent cell of voice quality is selected to switch over.VoLTE business switch method provided by the invention and system switch over to the preferable cell of speech perception to control user by detecting the voice quality of user in network side, have evaded user to greatest extent and perceived deterioration problem.
Description
Technical field
The present invention relates to mobile communication technology fields, more particularly, to a kind of VoLTE business switch method and system.
Background technique
Switching (handover) is the indispensable critical function of mobile communication system, is specifically referred in mobile communication
In the process, under the premise of guaranteeing that communication is continual, the channel of communication is transformed into another wireless communication from a wireless channel
This function in road.In general, when mobile station from a base station overlay area be moved to another base station overlay area or due to by
Extraneous interference or other reasons makes that switching can be triggered under the scenes such as communication quality decline.
In the lte networks, the prior art is using Mobile Assisted Handover (MAHO) strategy, i.e. network requirement moving table measuring
Ambient signals intensity and according to certain rules report network side, network side are judged according to the measurement result of mobile station.Tool
Body process can be divided into measurement, judgement and execute 3 steps.Wherein, measurement is divided into measuring to control to issue again and report with measurement report
Two processes, measurement control are that network side is issued to the user side (UE), it is specified that the measurement type of UE and reporting rule, document 3GPP
Specific measurement control message type is defined in TS 36.331 and message carries content information, is advised in 3GPP TS 36.214
Determine measurement type such as Reference Signal Received Power (RSRP), the LTE Reference Signal Received Quality (RSRQ) etc. in LTE system,
UE is measured according to the requirement of measurement control, and satisfaction reports regular Shi Shangfa measurement report to network side.Switch decision is needle
The measurement report that UE is reported is carried out, 7 kinds of event report types in LTE system are defined in document 3GPP TS 36.331
Type is divided into two classes: in LTE system between LTE system, can choose different event report combinations, structure according to the actual situation
Make different handoff algorithms.Switching executes the downward compatibility for considering LTE system, not only supports intra-system handover, also answers
It supports intersystem handover simultaneously, corresponding switching flow has been standardized in 3GPP TS 36.300.
The VoLTE business of the prior art inherits the switchover policy of LTE data service completely, according to 3GPP TS 36.214
Statement, UE can carry out RSRP, RSRQ etc. 15 measurements, and network side can carry out RS TX power, routing information protocol
(RIP), pre-set time (TADV) etc. 7 measurements, then existing switchover policy can only be designed according to these measured values.
But VoLTE business is a kind of multi-media voice network based on IP transmission technology, speech quality not only with nothing
The superiority and inferiority of thread environment has relationship, but also related with the packet loss of VoIP packet, time delay, delay variation, switching state etc., these refer to
Mark directly affects the perception of VoLTE user, in the scene that these indexs persistently deteriorate, will lead to user's single-pass, interrupted, matter difference etc.
Problem.
Summary of the invention
The present invention provides a kind of a kind of VoLTE business for overcoming the above problem or at least being partially solved the above problem and cuts
Change method and system.
According to an aspect of the present invention, a kind of VoLTE business switch method is provided characterized by comprising
S1, it is based on preset voice quality detection algorithm, calculates user in the voice quality of Target cell, wherein described
Target cell includes current area and several adjacent cells；
If the voice quality of S2, user in current area is lower than the first preset threshold, the highest neighbour of voice quality is selected
Nearly cell switches over.
Wherein, the method also includes:
If voice quality of the user in current area is higher than the first preset threshold, and user is in the wireless signal of current area
Quality is lower than the second preset threshold, then the cell for selecting radio signal quality to be higher than the second preset threshold switches over.
Wherein, the method also includes:
When radio signal quality of the user in current area is lower than the second preset threshold, and user is in the voice of current area
When quality is lower than the first preset threshold,
If first detecting, radio signal quality of the user in current area is lower than the second preset threshold, selects wireless signal
The cell that quality is higher than the second preset threshold switches over, or
If first detecting, voice quality of the user in current area is lower than the first preset threshold, selects voice quality highest
Adjacent cell switch over.
Wherein, step S1 includes:
S11, it is based on preset voice quality detection algorithm, obtains user and deletes frame in the frame error rate of Target cell and continuously
Rate；
S12, frame per second based on the frame error rate and is continuously deleted, calculates user in the voice quality of Target cell.
Wherein, step S12 is specifically included:
VQILTE=A*FERm+B*LFEn+Constsingle_AMR,
Wherein, VQILTEFor voice quality, FER is the frame error rate, and LFE continuously deletes frame per second to be described,
Constsingle_AMRFor code rate, A, B, m, n are constant.
Wherein, step S2 includes:
If the voice quality of S21, user in current area is lower than the first preset threshold, start timer；
S22, in the timer timing range, voice quality of the user in current area is consistently less than the first default threshold
Value, then select the highest adjacent cell of voice quality to switch over.
Wherein, after once switch, switch in preset protection duration without next time.
According to the second aspect of the invention, a kind of VoLTE service switchover system is provided, comprising:
VQI module, for be based on preset voice quality detection algorithm, calculate user Target cell voice quality,
Wherein, the Target cell includes current area and several adjacent cells；
Switching module selects voice matter if the voice quality for user in current area is lower than the first preset threshold
Highest adjacent cell is measured to switch over.
According to the third aspect of the invention we, a kind of computer program product, including program code, said program code are provided
For executing VoLTE business switch method described above.
According to the fourth aspect of the invention, a kind of non-transient computer readable storage medium is provided, for storing such as preceding institute
The computer program stated.
VoLTE business switch method provided by the invention and system, by detecting the voice quality of user in network side, from
And control user and switched over to the preferable cell of speech perception, evade user to greatest extent and perceives deterioration problem.
Detailed description of the invention
Fig. 1 is a kind of VoLTE business switch method flow chart provided in an embodiment of the present invention；
Fig. 2 is a kind of VoLTE service switchover system structure chart provided in an embodiment of the present invention.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.Implement below
Example is not intended to limit the scope of the invention for illustrating the present invention.
Fig. 1 is a kind of VoLTE business switch method flow chart provided in an embodiment of the present invention, as shown in Figure 1, the method
Include:
S1, it is based on preset voice quality detection algorithm, calculates user in the voice quality of Target cell, wherein described
Target cell includes current area and several adjacent cells；
If the voice quality of S2, user in current area is lower than the first preset threshold, the highest neighbour of voice quality is selected
Nearly cell switches over.
In the prior art, since VoLTE business inherits the switchover policy of LTE data service completely, therefore can only be according to nothing
Line class index determines the network environment of user to switch over, but VoLTE business is a kind of based on IP transmission technology
Multi-media voice network, speech quality not only have a relationship with the superiority and inferiority of wireless environment, but also with the packet loss of VoIP packet, when
Prolong, delay variation, switching state etc. it is related, these indexs directly affect the perception of VoLTE user, persistently deteriorate in these indexs
Scene, will lead to user's single-pass, discontinuously, the problems such as matter is poor.
In view of the above-mentioned problems of the prior art, and largely case is analyzed, VoLTE industry provided by the invention
Business switching method it is existing based on wireless class index switch on the basis of, be additionally arranged VQI (Voice Quality
Indicator) index carries out mixing switching, in the case where VQI index deteriorates, issues urgent switching life by network controls
It enables, the control preferable cell of user VQI into adjacent area switches over.
Specifically, the preset voice quality detection algorithm is the network management entity or base in network side in S1
The algorithm for including in the VQI module added on standing, the information exchange of the VQI module passes through X2 interface and S1 interface is realized,
In, the VQI module added is able to detect the indexs such as packet loss, time delay, the delay variation of VoIP packet；
Uplink and downlink testing result is inputted in VQI model, uplink and downlink air interface voice quality can be exported.The language
Performance monitoring of the sound quality for the statistics, user class of cell-level voice quality related performance indicators, while also to pass through network management
Index output.
It is understood that the VQI value calculating process of above-mentioned VQI model is directed to a cell, the embodiment of the present invention is mentioned
The scheme of confession can calculate multiple VQI values of the user in current area and adjacent cell for network side simultaneously and store.
In S2, it is to be understood that when the VQI value of calculating is unsatisfactory for the first preset threshold, then switch over.Wherein, institute
Stating the first preset threshold is the voice quality discrimination threshold set according to the historical data of voice quality, higher than the VQI of this threshold value
Value is it is believed that voice quality meet demand, the VQI value lower than this threshold value are believed that voice quality is unsatisfactory for demand.
It is understood that i.e. voice quality is unsatisfactory for needing when VQI value of the user in current area is lower than preset threshold
It asks, then can determine that user needs to switch at this time, then the higher adjacent cells of VQI value is selected to switch over.
If all VQI values of all adjacent cells are below preset threshold, then selecting in current area and adjacent cells
The highest cell of VQI value is selected to switch over.
VoLTE business switch method provided by the invention and system, by detecting the voice quality of user in network side, from
And control user and switched over to the preferable cell of speech perception, evade user to greatest extent and perceives deterioration problem.
On the basis of the above embodiments, the method also includes:
If voice quality of the user in current area is higher than the first preset threshold, and user is in the wireless signal of current area
Quality is lower than the second preset threshold, then the cell for selecting radio signal quality to be higher than the second preset threshold switches over.
It is understood that VoLTE business switch method provided in an embodiment of the present invention is in the prior art based on nothing
The method added on the basis of the switching of line signal quality, then also needing to sentence while the voice quality for judging user
The radio signal quality of disconnected user, if the radio signal quality of user is lower than the second preset threshold, according to cutting for the prior art
Method is changed, the cell that selection meets radio signal quality switches over.
It is understood that the embodiment of the present invention passes through two kinds of switch mode parallel forms, while considering two kinds and cutting
Change condition: if it is the switching based on radio signal quality, then Target cell is that reporting of user wireless environment meets switching condition
Cell, if it is the switching based on VQI, then Target cell is the Target cell that VQI module is found.
On the basis of the above embodiments, the method also includes:
When radio signal quality of the user in current area is lower than the second preset threshold, and user is in the voice of current area
When quality is lower than the first preset threshold,
If first detecting, radio signal quality of the user in current area is lower than the second preset threshold, selects wireless signal
The cell that quality is higher than the second preset threshold switches over, or
If first detecting, voice quality of the user in current area is lower than the first preset threshold, selects voice quality highest
Adjacent cell switch over.
Only have a kind of condition of switching mode full it is understood that providing two kinds of switching modes in above-described embodiment
The method switched over when sufficient, the embodiment of the present invention are provided herein when two kinds of switching modes while switching side when meeting condition
Method.
It should be noted that the switching provided in an embodiment of the present invention based on radio signal quality and cutting based on VQI value
It changes, the handoff relation of the two is competitive relation, i.e. the preceding side of timing first carries out, and there is no priority relationships between the two.
On the basis of the above embodiments, step S1 includes:
S11, it is based on preset voice quality detection algorithm, obtains user and deletes frame in the frame error rate of Target cell and continuously
Rate；
S12, frame per second based on the frame error rate and is continuously deleted, calculates user in the voice quality of Target cell.
Wherein, step S12 is specifically included:
VQILTE=A*FERm+B*LFEn+Constsingle_AMR,
Wherein, VQILTEFor voice quality, FER is the frame error rate, and LFE continuously deletes frame per second to be described,
Constsingle_AMRFor code rate, A, B, m, n are constant.
The embodiment of the present invention provides a kind of calculation method of VQI value, mainly according to the frame error rate of acquisition (FER) and continuously
Frame per second (LFE) index is deleted, the VQI value of user at this time is calculated.
Wherein, the FER is the primary factor for causing VQI to decline.The embodiment of the present invention is according to voice packet mistake packet number, time-out
Number of dropped packets and total packet number are calculated.
There are non-linear relations between the LFE and FER, and when FER is lower, LFE can ignore.
Specifically, VQI value can be calculated by following formula:
VQILTE=A*FERm+B*LFEn+Constsingle_AMR,
Wherein, VQILTEFor voice quality, FER is the frame error rate, and LFE continuously deletes frame per second to be described,
Constsingle_AMRFor code rate, A, B, m, n are constant.
It should be noted that Constsingle_AMRDetermine the peak of VQI, related to code rate, A, B, m, n are normal
Number, can individually set according to existing net different scenes.
On the basis of the above embodiments, step S2 includes:
If the voice quality of S21, user in current area is lower than the first preset threshold, start timer；
S22, in the timer timing range, voice quality of the user in current area is consistently less than the first default threshold
Value, then select the highest adjacent cell of voice quality to switch over.
In S21, the timer is located in the VQI module in above-described embodiment, it is to be understood that if only according to primary
Detection VQI value is that the cell voice quality where judging the user is bad, then testing result may not be accurate, it is possible to only happen suddenly
The voice quality problem of property, therefore the embodiment of the present invention is additionally arranged timer in VQI module.When VQI value is lower than threshold value, triggering
Timer.
In S22, the embodiment of the invention provides a preset timing ranges, if user is in the voice quality of current area
It is consistently less than the first preset threshold, then the highest adjacent cell of voice quality is selected to switch over.
It is understood that the embodiment of the present invention issues process based on the switching command of VQI by threshold value and timing controlled,
VQI module measures and calculates the VQI value of VoLTE user, and when VQI target value of the VQI calculated value of UE lower than setting, starting is fixed
When device if UE speech perception index is continuous worsening reach time lag, VQI just passes through network side and directly issues switching command.
On the basis of the above embodiments, after once switch, without cutting next time in preset protection duration
It changes.
It is understood that switching is in order to enable user obtains better VoLTE business experience, but frequently switches this
Body can impact the experience of user, therefore the embodiment of the present invention provides a kind of protection mechanism herein, so that being not in the frequency
Numerous switching phenomenon.
Method provided in an embodiment of the present invention is additionally arranged a protection duration after a finishing switching, in protection duration
Interior to carry out second of switching, specifically, for example: user switches to B cell by A cell using the switchover policy based on VQI
Afterwards, in protection duration, user must not be rapidly switched to other cells by B cell again, contain two kinds of scenes among these:
1, the switching command based on VQI no longer is issued to the user in the VQI module short time, user is avoided to be based on
The frequent switching of VQI.
2, the measuring control information based on wireless quality no longer is issued to the user in the B cell short time, user is avoided to exist
Based on VQI and based on generating frequent switching between two kinds of handover mechanisms of wireless quality.
The protection mechanism so provided according to embodiments of the present invention then can effectively solve frequent switching, so that user
Experience is more preferably.
Fig. 2 is a kind of VoLTE service switchover system structure chart provided in an embodiment of the present invention, as shown in Figure 2, comprising:
VQI module 1 and switching module 2, in which:
VQI module 1 be used for be based on preset voice quality detection algorithm, calculate user Target cell voice quality,
Wherein, the Target cell includes current area and several adjacent cells；
If voice quality of the switching module 2 for user in current area is lower than the first preset threshold, voice matter is selected
Highest adjacent cell is measured to switch over.
Specifically, the voice when VQI module 1 according to the voice messaging of acquisition, to user in current area and adjacent cell
Quality is calculated, and then switching module 2 judges whether the VQI value being calculated is lower than according to the calculated result of VQI module 1
First preset threshold selects the highest adjacent cell of voice quality to switch over if being lower than the first preset threshold.
VoLTE service switchover system provided in an embodiment of the present invention, by adding VQI module in network side, to user's
Voice quality is calculated, to judge whether user is in the bad environment of voice quality, if user is in voice
When the environment of poor quality, network side actively initiates switching, and user is switched in the preferable neighboring community of voice quality.
The embodiment of the present invention provides a kind of VoLTE service switchover system, comprising: at least one processor；And with it is described
At least one processor of processor communication connection, in which:
The memory is stored with the program instruction that can be executed by the processor, and the processor calls described program to refer to
It enables to execute method provided by above-mentioned each method embodiment, for example, it S1, is based on preset voice quality detection algorithm,
User is calculated in the voice quality of Target cell, wherein the Target cell includes current area and several adjacent cells；
If S2, user current area voice quality be lower than the first preset threshold, select the highest adjacent cell of voice quality into
Row switching.
The present embodiment discloses a kind of computer program product, and the computer program product includes being stored in non-transient calculating
Computer program on machine readable storage medium storing program for executing, the computer program include program instruction, when described program instruction is calculated
When machine executes, computer is able to carry out method provided by above-mentioned each method embodiment, for example, S1, is based on preset language
Sound quality detection algorithm, calculate user Target cell voice quality, wherein if the Target cell include current area and
Dry adjacent cells；If the voice quality of S2, user in current area is lower than the first preset threshold, voice quality highest is selected
Adjacent cell switch over.
The present embodiment provides a kind of non-transient computer readable storage medium, the non-transient computer readable storage medium
Computer instruction is stored, the computer instruction makes the computer execute method provided by above-mentioned each method embodiment, example
Such as include: S1, based on preset voice quality detection algorithm, calculates user in the voice quality of Target cell, wherein the mesh
Marking cell includes current area and several adjacent cells；If the voice quality of S2, user in current area is default lower than first
Threshold value then selects the highest adjacent cell of voice quality to switch over.
Those of ordinary skill in the art will appreciate that: realize that all or part of the steps of above method embodiment can pass through
The relevant hardware of program instruction is completed, and program above-mentioned can be stored in a computer readable storage medium, the program
When being executed, step including the steps of the foregoing method embodiments is executed；And storage medium above-mentioned includes: ROM, RAM, magnetic disk or light
The various media that can store program code such as disk.
Through the above description of the embodiments, those skilled in the art can be understood that each embodiment can
It realizes by means of software and necessary general hardware platform, naturally it is also possible to pass through hardware.Based on this understanding, on
Stating technical solution, substantially the part that contributes to existing technology can be embodied in the form of software products in other words, should
Computer software product may be stored in a computer readable storage medium, such as ROM/RAM, magnetic disk, CD, including several fingers
It enables and using so that a computer equipment (can be personal computer, server or the network equipment etc.) executes each implementation
Method described in certain parts of example or embodiment.
Finally, the present processes are only preferable embodiment, it is not intended to limit the scope of the present invention.It is all
Within the spirit and principles in the present invention, any modification, equivalent replacement, improvement and so on should be included in protection of the invention
Within the scope of.
Claims (10)
1. a kind of VoLTE business switch method characterized by comprising
S1, it is based on preset voice quality detection algorithm, calculates user in the voice quality of Target cell, wherein the target
Cell includes current area and several adjacent cells；
If the voice quality of S2, user in current area is lower than the first preset threshold, select voice quality highest neighbouring small
Area switches over.
2. the method according to claim 1, wherein the method also includes:
If voice quality of the user in current area is higher than the first preset threshold, and user is in the radio signal quality of current area
Lower than the second preset threshold, then the cell for selecting radio signal quality to be higher than the second preset threshold switches over.
3. according to the method described in claim 2, it is characterized in that, the method also includes:
When radio signal quality of the user in current area is lower than the second preset threshold, and user is in the voice quality of current area
When lower than the first preset threshold,
If first detecting, radio signal quality of the user in current area is lower than the second preset threshold, selects radio signal quality
Cell higher than the second preset threshold switches over, or
If first detecting, voice quality of the user in current area is lower than the first preset threshold, selects the highest neighbour of voice quality
Nearly cell switches over.
4. the method according to claim 1, wherein step S1 includes:
S11, it is based on preset voice quality detection algorithm, obtains user and deletes frame per second in the frame error rate of Target cell and continuously；
S12, frame per second based on the frame error rate and is continuously deleted, calculates user in the voice quality of Target cell.
5. according to the method described in claim 4, it is characterized in that, step S12 is specifically included:
VQILTE=A*FERm+B*LFEn+Constsingle_AMR,
Wherein, VQILTEFor voice quality, FER is the frame error rate, and LFE continuously deletes frame per second, Const to be describedsingle_AMRFor
Code rate, A, B, m, n are constant.
6. the method according to claim 1, wherein step S2 includes:
If the voice quality of S21, user in current area is lower than the first preset threshold, start timer；
S22, in the timer timing range, voice quality of the user in current area is consistently less than the first preset threshold,
The highest adjacent cell of voice quality is then selected to switch over.
7. method according to claim 1 to 3, which is characterized in that after once switch, in preset guarantor
It protects in duration and switches without next time.
8. a kind of VoLTE service switchover system characterized by comprising
VQI module calculates user in the voice quality of Target cell for being based on preset voice quality detection algorithm, wherein
The Target cell includes current area and several adjacent cells；
Switching module selects voice quality most if the voice quality for user in current area is lower than the first preset threshold
High adjacent cell switches over.
9. a kind of computer program product, which is characterized in that the computer program product includes being stored in non-transient computer
Computer program on readable storage medium storing program for executing, the computer program include program instruction, when described program is instructed by computer
When execution, the computer is made to execute the method as described in claim 1 to 7 is any.
10. a kind of non-transient computer readable storage medium, which is characterized in that the non-transient computer readable storage medium is deposited
Computer instruction is stored up, the computer instruction makes the computer execute the method as described in claim 1 to 7 is any.
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| CN110139316A (en) * | 2019-05-31 | 2019-08-16 | 中国联合网络通信集团有限公司 | Audio call switching method, device, equipment and computer readable storage medium |
| CN111816209A (en) * | 2020-06-19 | 2020-10-23 | 天通畅达(深圳)科技有限公司 | Voice switching method and device based on voice quality evaluation |
| CN111917468A (en) * | 2020-06-29 | 2020-11-10 | 西安理工大学 | Method for reducing switching times in VLC/Wi-Fi wireless heterogeneous network |
| CN112055378A (en) * | 2019-06-05 | 2020-12-08 | 成都鼎桥通信技术有限公司 | Method and device for judging voice quality of narrow-band digital cluster |
| CN112908346A (en) * | 2019-11-19 | 2021-06-04 | 中国移动通信集团山东有限公司 | Packet loss recovery method and device, electronic equipment and computer readable storage medium |
| CN113055924A (en) * | 2019-12-26 | 2021-06-29 | 中国电信股份有限公司 | Voice quality evaluation method and device and computer readable storage medium |
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