CN109511141A - A method of based on the control VoWifi switching of RTP packet loss system - Google Patents
A method of based on the control VoWifi switching of RTP packet loss system Download PDFInfo
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- CN109511141A CN109511141A CN201811495574.5A CN201811495574A CN109511141A CN 109511141 A CN109511141 A CN 109511141A CN 201811495574 A CN201811495574 A CN 201811495574A CN 109511141 A CN109511141 A CN 109511141A
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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
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
- H04W36/0022—Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies
-
- 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
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0066—Transmission or use of information for re-establishing the radio link of control information between different types of networks in order to establish a new radio link in the target network
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/14—Reselecting a network or an air interface
-
- 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
-
- 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
- H04L43/0823—Errors, e.g. transmission errors
- H04L43/0829—Packet loss
-
- 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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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The present invention is suitable for the communications field, provide a kind of method based on the control VoWifi switching of RTP packet loss system, the described method comprises the following steps: step S1: being arranged the preset value of the statistical time window T1 of RTP packet loss in RTP packet loss computing module, and the preset value of RTP packet loss and the time-out time of timer T2 is arranged in voice switching judging module；Step S2: VoWifi call is carried out by VoWifi call module；Step S3:RTP packet loss computing module calculates RTP packet loss by statistical time window T1 and according to calculating formula, and calculated RTP packet loss is sent to voice switching judging module；Solution must not carry out the technical issues of accurate handoff calls mode.
Description
Technical field
The invention belongs to the communications field more particularly to a kind of methods based on the control VoWifi switching of RTP packet loss system.
Background technique
In LTE (Long Term Evolution, long term evolution) network, UE (User Equipment, user side
Electronic equipment) between can be communicated by VoLTE (Voice Over LTE, the voice based on LTE).Wherein, VoLTE is logical
Letter is a kind of based on LTE system and IMS (Internet Protocol Multimedia System, internet protocol multi-media
System) network voice service.VoWifi (Voice Over Wifi, the voice based on Wifi) be a kind of dependence Wifi into
The voice service of row IMS call.
Currently, the voice packet and video bag in IMS call are all by RTP(Real-Time Protocol, real-time Transmission
Agreement) it is transmitted.And be the VoWifi of access technology when transmitting RTP packet using Wifi, it is easier to by some networks because
Element influences (for example, network temporary derangement causes network speed to decline), causes RTP packet loss higher, in turn results in interrupted, noise of conversing
Situations such as.GBR (Guaranteed Bit Rate, guarantee bit speed can be passed through in this respect by the VoLTE of medium of LTE
Rate) mode guarantees the rate of voice packet and audio pack, greatly improve RTP packet loss.
In existing technical solution, using signal strength as switching condition, when wifi signal is stronger without cutting
VoLTE is shifted to, will lead to rest under the stronger wifi hotspot of signal in this way, and the rate that the wifi hotspot can be provided is insufficient
To support voice service, cause call interrupted.
In existing technical solution, has and propose using wifi rate as whether accessing the judgment condition of VoWifi, but access
The possible real-time change of the number of users of same wifi hotspot, and then each user wifi rate obtained is also variation, institute
There is a situation where inaccuracy with this judgment method.The program is served only for the initial access judgement of VoWifi, cannot be to conversing
It is made decisions in journey.
It in existing technical solution, proposes in terminal side to limit the rate of non-VoWifi business, and then allows VoWifi business
Obtained rate is higher, but there are problems that non-VoWifi business number is uncertain and bring calculating and control complexity.It allows for a long time
Non- VoWifi business is obtained compared with low rate, may will also result in service disconnection, and subsequent reconstruction is caused to stand the consumption of bring signaling.
Summary of the invention
The purpose of the present invention is to provide a kind of methods based on the control VoWifi switching of RTP packet loss system, it is intended to solve
The technical issues of never can be carried out accurate handoff calls mode.
The invention is realized in this way a method of based on the control VoWifi switching of RTP packet loss system, the method
The following steps are included:
Step S1: the preset value of the statistical time window T1 of RTP packet loss is set in RTP packet loss computing module, in voice
The preset value of RTP packet loss and the time-out time of timer T2 is set in switching judging module；
Step S2: VoWifi call is carried out by VoWifi call module；
Step S3:RTP packet loss computing module calculates RTP packet loss by statistical time window T1 and according to calculating formula, and will
Calculated RTP packet loss is sent to voice switching judging module；
Step S4: voice switching judging module judges whether RTP packet loss is persistently greater than the preset value of RTP packet loss, if so, then
Starting timer T2 and the RTP packet loss for continuing to calculate next statistical time window T1, if not, return step S3；
Step S5: voice switching judging module judges whether RTP packet loss is persistently greater than the default of the time-out time of timer T2
Value, if so, VoLTE call is then switched to by the execution of voice switching executing module, if not, resetting timer T2, and return
Step S3.
A further technical solution of the present invention is: the statistical time window T1's of the RTP packet loss in the step S1 is pre-
If value is that 0.1-10S is primary.
A further technical solution of the present invention is: the preset value of the RTP packet loss in the step S1 is Threshold_
rtp_loss_rate。
A further technical solution of the present invention is: the preset value of the time-out time of the timer T2 in the step S1 is 1-
10S。
A further technical solution of the present invention is: the calculating formula in the step S3 is RTP packet loss=lost package
Number/expected packet number, wherein it is expected that the number of packet is equal in the statistical time, maximum Sequence Number is subtracted
Initial Sequence Number, the number of lost package are equal to the expected number for receiving packet and subtract the number for being an actually-received packet,
The number for being an actually-received packet is the RTP packet number received in the statistical time.
The beneficial effects of the present invention are: RTP packet loss when this programme is conversed using VoWifi is as deciding whether to switch
To a foundation of VoLTE, and just switched over when RTP packet loss is persistently higher than preset value.It can solve the prior art
In switching merely using signal strength as foundation the problem of bringing, for example, when the bandwidth that Wifi signal is relatively strong but is distributed by
When height is lower, the prior art, which will not trigger, switches to VoLTE call, and will lead to call discontinuously influences user experience, and uses this
When scheme, when distributed Wifi bandwidth decline when, will lead to RTP packet loss increase (Wifi bandwidth decline, lead to some RTP
Packet cannot be sent at the appointed time and then can be dropped), and (illustrate that network temporarily can not be quickly extensive after continuing for some time
It can trigger again) and switch to VoLTE call, and then keep the continuity of call, in addition, because RTP packet loss is directly to react call matter
The parameter of amount, it is more accurate for deciding whether to switch to VoLTE call；For example, when the bandwidth that Wifi is distributed is higher,
It cannot be guaranteed that the bandwidth for VoWifi call is maintained at a higher range；What existing scheme proposed allows VoWifi business to have
There is high bandwidth priority, there are problems that non-VoWifi business number is uncertain and bring calculating and control complexity, Yi Jiyin
This non-VoWifi service disconnection need to re-establish and bring signaling consumes.When the bandwidth decline that VoWifi call uses, we
Case can by RTP packet loss increase switch to early VoLTE call, and then guarantee call quality.And this programme institute
The parameter needed can be easy acquisition and real-time update as a result, it is possible to track RTP packet loss, switch in time.
Detailed description of the invention
Fig. 1 is a kind of stream of method based on the control VoWifi switching of RTP packet loss system provided in an embodiment of the present invention
Cheng Tu；
Fig. 2 is a kind of structural block diagram of RTP packet loss system provided in an embodiment of the present invention.
Specific embodiment
Fig. 1-2 shows a kind of RTP packet loss system provided by the invention, and RTP packet loss system includes RTP packet loss meter
Module is calculated, connects the VoWifi call module and voice switching judging module of the RTP packet loss computing module, described in connection
The voice switching executing module of VoWifi call module and the voice switching judging module, and the connection voice switching execute
The VoLTE call module of module, the RTP packet loss computing module: for calculating RTP packet loss when VoWifi call,
VoWifi starts when call starts, and in VoWifi end of conversation or switches to closing when VoLTE converses, RTP packet loss calculates
Module obtains timestamp, sequence number and the relevant information of RTP packet from VoWifi call module, then calculates RTP packet loss, and
The result of RTP packet loss is exported and gives voice switching judging module；The voice switching judging module: for according to RTP packet loss
The output of rate computing module as a result, decide whether to need to carry out voice switching, module maintenance management timer T2 simultaneously, the mould
Block safeguards the numerical value of pre-determined threshold Threshold_rtp_loss_rate simultaneously, and the judgment condition of the module includes RTP packet loss
Rate and RTP packet loss are higher than the duration of predetermined threshold value；The voice switching executing module: for switching from voice
The instruction for whether needing to be implemented voice switching is obtained in judgment module, if desired carries out voice switching, then executes voice switching, it should
The conversion of modular managing terminal internal agreement stack executes the process and respective resources management of voice switching；The VoLTE call
Module: for establishing and VoLTE being maintained to converse, when voice switching executing module initiates switching command, which arouses
VoLTE call flow, and switching result is returned into voice switching executing module；The VoWifi module: for establishing simultaneously
VoWifi call is maintained, and provides timestamp, the sequence number relevant information of RTP packet to RTP packet loss computing module, is being received
When the initiation of voice switching executing module switches to the instruction of VoLTE, corresponding signaling process and resource are discharged；And it will release
As a result voice switching executing module is returned to.
A method of based on the control VoWifi switching of RTP packet loss system, the described method comprises the following steps:
Step S1: the preset value of the statistical time window T1 of RTP packet loss is set in RTP packet loss computing module, in voice
The preset value of RTP packet loss and the time-out time of timer T2 is set in switching judging module；
Step S2: VoWifi call is carried out by VoWifi call module；
Step S3:RTP packet loss computing module calculates RTP packet loss by statistical time window T1 and according to calculating formula, and will
Calculated RTP packet loss is sent to voice switching judging module；
Step S4: voice switching judging module judges whether RTP packet loss is persistently greater than the preset value of RTP packet loss, if so, then
Starting timer T2 and the RTP packet loss for continuing to calculate next statistical time window T1, if not, return step S3；
Step S5: voice switching judging module judges whether RTP packet loss is persistently greater than the default of the time-out time of timer T2
Value, if so, VoLTE call is then switched to by the execution of voice switching executing module, if not, resetting timer T2, and return
Step S3.When being judged as that needing progress to switch to VoLTE from VoWifi call converses, by the completion of voice switching executing module
Access technology is switched to LTE from Wifi by the conversion of portion's protocol stack, and voice switching executing module is aroused VoLTE call module, given
VoLTE call module storage allocation resource establishes the signaling connection of LTE and establishes VoLTE call dedicated bearer, VoWifi mould
Block removes the signaling connection with ePDG, and voice switching executing module discharges memory source occupied by VoWifi module, VoLTE call
Module initiates the re-register process of IMS, and access standard is changed to LTE in register command REGISTER, and voice switching is held
The access of RTP packet is changed to LTE from Wifi by row module, and subsequent RTP packet will be handled by VoLTE call module.
The preset value of the statistical time window T1 of RTP packet loss in the step S1 can be carried out by storage equipment
Modification and preservation, general value are that 0.1-10S is primary.
The preset value of RTP packet loss in the step S1 is Threshold_rtp_loss_rate.
The preset value of the time-out time of timer T2 in the step S1 can be modified and be protected by storing equipment
It deposits, general value is 1-10S.
Calculating formula in the step S3 is RTP packet loss=lost package number/expection packet number, wherein it is expected that packet
Number be equal in the statistical time, maximum Sequence Number subtracts initial Sequence Number, lose
The number of packet is equal to the expected number for receiving packet and subtracts the number for being an actually-received packet, and the number for being an actually-received packet is in the system
The RTP packet number received in timing.
RTP packet loss when this programme is conversed using VoWifi as a foundation for deciding whether to switch to VoLTE, and
And it is just switched over when RTP packet loss is persistently higher than preset value.Can solve in the prior art merely using signal strength as
The problem of switching of foundation is brought, for example, the prior art will not when the bandwidth that Wifi signal is relatively strong but is distributed is lower by height
Triggering switches to VoLTE call, when will lead to call discontinuously influence user experience, and using this programme, as the Wifi distributed
Bandwidth decline when, will lead to RTP packet loss increase (Wifi bandwidth decline, cause some RTP packets that cannot be sent at the appointed time
And then can be dropped), and (illustrating that network temporarily can not quickly restore) can trigger that switch to VoLTE logical after continuing for some time
Words, and then the continuity of call is kept, in addition, because RTP packet loss is the parameter of direct reaction speech quality, for deciding whether to cut
It is more accurate to shift to VoLTE call；For example, cannot guarantee that and converse for VoWifi when the bandwidth that Wifi is distributed is higher
Bandwidth be maintained at a higher range；What existing scheme proposed allows VoWifi business to have high bandwidth priority, exists
Non- VoWifi business number does not know the problem of bringing calculating and control complexity, and therefore non-VoWifi service disconnection needs weight
It establishes and the consumption of bring signaling.When the bandwidth decline that VoWifi call uses, this programme can pass through the increasing of RTP packet loss
Height is conversed to switch to VoLTE early, and then guarantees the quality of call.And parameter required for this programme can be easy to obtain simultaneously
And real-time update is switched in time as a result, it is possible to track RTP packet loss.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (5)
1. a kind of method based on the control VoWifi switching of RTP packet loss system, which is characterized in that the method includes following steps
It is rapid:
Step S1: the preset value of the statistical time window T1 of RTP packet loss is set in RTP packet loss computing module, in voice
The preset value of RTP packet loss and the time-out time of timer T2 is set in switching judging module；
Step S2: VoWifi call is carried out by VoWifi call module；
Step S3:RTP packet loss computing module calculates RTP packet loss by statistical time window T1 and according to calculating formula, and will
Calculated RTP packet loss is sent to voice switching judging module；
Step S4: voice switching judging module judges whether RTP packet loss is persistently greater than the preset value of RTP packet loss, if so, then
Starting timer T2 and the RTP packet loss for continuing to calculate next statistical time window T1, if not, return step S3；
Step S5: voice switching judging module judges whether RTP packet loss is persistently greater than the default of the time-out time of timer T2
Value, if so, VoLTE call is then switched to by the execution of voice switching executing module, if not, resetting timer T2, and return
Step S3.
2. the method according to claim 1, wherein the statistical time window of the RTP packet loss in the step S1
The preset value of mouth T1 is 0.1-10S.
3. according to the method described in claim 2, it is characterized in that, the preset value of the RTP packet loss in the step S1 is
Threshold_rtp_loss_rate。
4. according to the method described in claim 3, it is characterized in that, the time-out time of the timer T2 in the step S1 it is pre-
If value is 1-10S.
5. the method according to claim 1, wherein calculating formula in the step S3 is RTP packet loss=lose
Lose number/expection packet number of packet, wherein it is expected that the number of packet is equal to the maximum Sequence in the statistical time
Number subtracts initial Sequence Number, and the number of lost package is equal to the expected number for receiving packet and subtracts practical reception
To the number of packet, the number for being an actually-received packet is the RTP packet number received in the statistical time.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110099421A (en) * | 2019-04-29 | 2019-08-06 | 维沃移动通信有限公司 | A kind of signal processing method, device and terminal device |
| CN110149452A (en) * | 2019-03-27 | 2019-08-20 | 杭州叙简科技股份有限公司 | A method of it reducing network packet loss rate and promotes call sound effect |
| CN110446235A (en) * | 2019-08-20 | 2019-11-12 | Oppo广东移动通信有限公司 | Call mode determines method and device, electronic equipment, storage medium |
| CN113271639A (en) * | 2021-05-19 | 2021-08-17 | 维沃移动通信有限公司 | Network service processing method and device |
| CN116233774A (en) * | 2022-12-27 | 2023-06-06 | 中国联合网络通信集团有限公司 | Method and equipment for triggering switching of different frequencies and different systems |
| EP4167633A4 (en) * | 2020-06-15 | 2023-12-06 | Vivo Mobile Communication Co., Ltd. | Method and apparatus for voice calls, and electronic device |
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