CN107509232A - A kind of method for ensureing mobile terminal unicast quality stability - Google Patents
A kind of method for ensureing mobile terminal unicast quality stability Download PDFInfo
- Publication number
- CN107509232A CN107509232A CN201710686638.9A CN201710686638A CN107509232A CN 107509232 A CN107509232 A CN 107509232A CN 201710686638 A CN201710686638 A CN 201710686638A CN 107509232 A CN107509232 A CN 107509232A
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- Prior art keywords
- mobile terminal
- route
- unicast
- service
- quality stability
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Classifications
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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
- H04W40/14—Communication route or path selection, e.g. power-based or shortest path routing based on transmission quality or channel quality based on stability
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/60—Network streaming of media packets
- H04L65/61—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/56—Provisioning of proxy services
- H04L67/568—Storing data temporarily at an intermediate stage, e.g. caching
-
- 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
- H04W40/20—Communication route or path selection, e.g. power-based or shortest path routing based on geographic position or location
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
- H04W4/025—Services making use of location information using location based information parameters
- H04W4/027—Services making use of location information using location based information parameters using movement velocity, acceleration information
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
- H04W4/029—Location-based management or tracking services
Abstract
The invention provides a kind of method for ensureing mobile terminal unicast quality stability, it is ensured that when being subjected to displacement, the unicast services of route are normally carried out, will not interrupted mobile terminal.Mobile terminal is during using unicast services, by the positional information that unicast server timing acquisition mobile terminal is newest, and according to existing positional information, calculate the positional information of the mobile terminal that unicast server may be got next time, and judge whether mobile terminal can then leave the service range of route, i.e., whether the service range that can be route covers.It may not such as cover, then need to select alternating path in addition by being attached, to ensure being normally carried out for unicast services.Select route closest outside former route service scope as alternating path by making the common factor of former and later two route service scopes minimum on the premise of service disruption is avoided, it is ensured that to the making full use of of each route, reduces lookup alternating path by number.
Description
Technical field
It is more particularly to a kind of to ensure mobile terminal unicast quality stability the invention belongs to Internet video play-back technology field
Method.
Background technology
Unicast is a kind of major way of IP data network transmissions, is the point-to-point connection between client and server.
" point-to-point " refers to each client and receives long-range stream from server.Only when client sends request, unicast stream is just sent.It is single
It is the communication carried out between a single sender and a recipient by network to broadcast.It can apply to communicate, calculate
The fields such as machine, multi-cast and unicast hybrid algorithm solving practical problems can also be utilized.When the client using unicast services is to be in
During mobile terminal on the move, tend to because mobile terminal present position can not interrupt unicast services connection route, shadow
User is rung to use.Authorization Notice No. is that CN101998145B patent of invention discloses a kind of raising mobile terminal unicast service matter
The content distribution method and system of amount, terminal switch contents distribution network node in moving process can be made, so as to improve list
Broadcast service quality, the flexibility of increase service.But the still unresolved mobile terminal avenrage of withdrawal of this method during service range by preventing
Only the problem of service disruption, use range is still limited.
The content of the invention
In order to solve the above-mentioned technical problem, the invention provides a kind of side for ensureing mobile terminal unicast quality stability
Method.
Concrete technical scheme of the present invention is as follows：
The invention provides a kind of method for ensureing mobile terminal unicast quality stability, comprise the following steps：
S1：The position of unicast server timing acquisition mobile terminal, and the service range with currently routeing is compared, and sentences
When disconnected next time described unicast server obtains the position of the mobile terminal, can the service range that currently route cover described
Mobile terminal；
S2：When judged result is " can not cover ", the unicast server selects the outer distance of the route service scope
Nearest route is as alternating path by concurrently sending service request, the attribute that the mobile terminal is included in the service request is believed
Breath and the content of request service；
S3：The alternating path is by receiving and by the service request, now the mobile terminal disconnection and previous route
Connection, and with the alternating path by being connected.
Further, the method judged described in the step S1 is as follows：Currently to route as the center of circle, with the current road
By farthest signal transmitting range be radius, the service range that the border circular areas of formation is as currently route；To next time described
When unicast server obtains the position of the mobile terminal, the desired location of the mobile terminal be predicted, when the expection
When position is fully located in the service range, then it is assumed that the service range can cover the mobile terminal；When described pre-
Phase, position was when being located at outside the service range, then it is assumed that the service range can not cover the mobile terminal.
Further, the step S1 comprises the following steps：
S1.1：The unicast server sets a time threshold, according to the time threshold, is moved described in timing acquisition
The position of terminal；
S1.2：The unicast server records the translational speed and motion track of the mobile terminal, and accordingly under reckoning
The new position of mobile terminal when once obtaining；
S1.3：The position of reckoning is compared the unicast server with the service range currently routeing, described in judgement
Whether service range can cover the new position of the reckoning.
Further, the projectional technique of the new position of the mobile terminal is as follows：Record the movement obtained every time eventually
The GPS information at end, calculate the translational speed of the mobile terminal while generate the mobile route of the mobile terminal, according to institute
The bearing of trend of translational speed and the mobile route is stated, estimates that the mobile terminal obtains position next time in the unicast server
New position when confidence ceases.
Further, the step S2 comprises the following steps：
S2.1, when judged result is " can not cover ", service range of the unicast server in presently described route
It is outer to search available route, and therefrom the nearest route of chosen distance be alternating path by；
S2.2：The unicast server to the alternating path by transmission service request, comprising described in the service request
The attribute information of mobile terminal and the content of request service.
Further, searching can use the method for route as follows：
Distance threshold is set, and the distance threshold includes upper threshold value L1 and lower threshold value L2, according to described with route and institute
State the air line distance L of mobile terminal current location, will find described in can be divided into three groups with route：
First group：L≤L2, any one during the mobile terminal prioritizing selection is route with the group are connected；
Second group：L2 ＜ L≤L1, when first group of route can not be connected with the mobile terminal, mobile terminal is by
Two groups are alternately, and with wherein any one be connected；
3rd group：L ＞ L1, group route too far, are not considered with the distance of mobile terminal.
Further, when the unicast server obtains the new position of the mobile terminal every time, road is used to described
By packet situation be updated.
Further, the step S2 also comprises the following steps：
S2.3：When the new position that the mobile terminal calculates can not be by the service range of any route in the range of current lookup
During covering, the unicast server opens caching passage to the mobile terminal, carries out the caching of current media file.
Further, the step S2.3 comprises the following steps：
S2.3.1：When the new position that the mobile terminal calculates can not be by the service model of any route in the range of current lookup
When enclosing covering, the unicast server sends network interruption to the mobile terminal and reminded；
S2.3.2：After the mobile terminal receives the network interruption prompting, sending caching to the unicast server please
Ask, after the unicast server receives the cache request, open caching passage to the mobile terminal, carry out current media text
The caching of part.
Further, the step S3 comprises the following steps：
S3.1：The alternating path sends session connection by receiving and by the service request to the mobile terminal；
S3.2：The mobile terminal receives the session connection, with the alternating path by being connected, simultaneously switch off with it is preceding all the way
By connection.
Beneficial effects of the present invention are as follows：The invention provides a kind of side for ensureing mobile terminal unicast quality stability
Method, it is ensured that when being subjected to displacement, the unicast services of route are normally carried out, will not interrupted mobile terminal.Mobile terminal
, can be due to can not be led using route service when in movement, (such as in car in traveling) is moved to outside the service range of route
Media file is caused to be unable to normal play.Therefore, in order to avoid there is service disruption in moving process, obtained by unicast server timing
The positional information that mobile terminal is newest is taken, and according to existing positional information, calculates that unicast server may be got next time
Mobile terminal positional information, and judge whether mobile terminal can then leave the service range of route, i.e., whether Neng Bei roads
By service range covered.It may not such as cover, then need to select alternating path in addition by being attached, to ensure unicast services
Be normally carried out.Select route closest outside former route service scope as alternating path by before service disruption is avoided
Putting makes the common factor of former and later two route service scopes minimum, it is ensured that to the making full use of of each route, reduces lookup friendship
For the number of route.
Brief description of the drawings
Fig. 1 is a kind of schematic diagram of the method for guarantee mobile terminal unicast quality stability described in embodiment 1；
Fig. 2 be embodiment 2 described in a kind of guarantee mobile terminal unicast quality stability method in step S1 signal
Figure；
Fig. 3 be embodiment 3 described in a kind of guarantee mobile terminal unicast quality stability method in step S2 signal
Figure；
Fig. 4 is to search that route can be used in a kind of method of guarantee mobile terminal unicast quality stability described in embodiment 3
Method schematic diagram；
Fig. 5 be a kind of guarantee mobile terminal unicast quality stability described in embodiment 4 method in step S2.3 show
It is intended to；
Fig. 6 be embodiment 5 described in a kind of guarantee mobile terminal unicast quality stability method in step S3 signal
Figure.
Embodiment
The present invention is described in further detail with following examples below in conjunction with the accompanying drawings.
Embodiment 1
As shown in figure 1, the embodiment of the present invention 1 provides a kind of method for ensureing mobile terminal unicast quality stability, bag
Include following steps：
S1：The position of unicast server timing acquisition mobile terminal, and the service range with currently routeing is compared, and sentences
When disconnected next time described unicast server obtains the position of the mobile terminal, can the service range that currently route cover described
Mobile terminal；
S2：When judged result is " can not cover ", the unicast server selects the outer distance of the route service scope
Nearest route is as alternating path by concurrently sending service request, the attribute that the mobile terminal is included in the service request is believed
Breath and the content of request service；
S3：The alternating path is by receiving and by the service request, now the mobile terminal disconnection and previous route
Connection, and with the alternating path by being connected.
The method judged described in the step S1 is as follows：Currently to route as the center of circle, with it is described currently route it is farthest
Signal transmitting range is radius, the service range that the border circular areas of formation is as currently route；To the unicast services next time
When device obtains the position of the mobile terminal, the desired location of the mobile terminal be predicted, when the desired location is complete
When in the service range, then it is assumed that the service range can cover the mobile terminal；When the desired location position
When outside the service range, then it is assumed that the service range can not cover the mobile terminal.
Mobile terminal (such as in car in traveling) position during movement can change, when mobile terminal moves
, can be due to that route service can not be used to cause media file to be unable to normal play when outside to the service range of route.Therefore, it is
Avoid occurring service disruption in moving process, by positional information that unicast server timing acquisition mobile terminal is newest, and root
According to existing positional information, the positional information of the mobile terminal that unicast server may be got next time is calculated, and judges to move
Whether dynamic terminal can then leave the service range of route, i.e., whether the service range that can be route covers.Such as may not
Covering, then need to select alternating path in addition by being attached, to ensure being normally carried out for unicast services.Select former route service scope
Outer closest route is as alternating path by making the friendship of former and later two route service scopes on the premise of service disruption is avoided
Collection is minimum, it is ensured that to the making full use of of each route, reduces lookup alternating path by number.
Embodiment 2
As shown in Fig. 2 the present embodiment 2 provides one kind on the basis of embodiment 1 ensures that mobile terminal unicast quality is steady
Qualitatively method, the embodiment 2 further define the step S1 and comprised the following steps：
S1.1：The unicast server sets a time threshold, according to the time threshold, is moved described in timing acquisition
The position of terminal；
S1.2：The unicast server records the translational speed and motion track of the mobile terminal, and accordingly under reckoning
The new position of mobile terminal when once obtaining；
S1.3：The position of reckoning is compared the unicast server with the service range currently routeing, described in judgement
Whether service range can cover the new position of the reckoning.
The projectional technique of the new position of the mobile terminal is as follows：Record the GPS letters of the mobile terminal obtained every time
Breath, calculates the translational speed of the mobile terminal while generates the mobile route of the mobile terminal, according to the translational speed
With the bearing of trend of the mobile route, estimate the mobile terminal the unicast server next time obtain positional information when
New position.
The positional information all previous by recording mobile terminal, calculate the translational speed of mobile terminal while generate mobile whole
The mobile route at end, the positional information of record is more, and the accuracy of mobile route and translational speed is higher, the prediction to new position
Also it is more accurate, can further improve search alternating path by success rate.
Embodiment 3
As shown in figure 3, the present embodiment 3 provides one kind on the basis of embodiment 1 ensures that mobile terminal unicast quality is steady
Qualitatively method, the embodiment 3 further define the step S2 and comprised the following steps：
S2.1, when judged result is " can not cover ", service range of the unicast server in presently described route
It is outer to search available route, and therefrom the nearest route of chosen distance be alternating path by；
S2.2：The unicast server to the alternating path by transmission service request, comprising described in the service request
The attribute information of mobile terminal and the content of request service.
As shown in figure 4, searching can use the method for route as follows：
Distance threshold is set, and the distance threshold includes upper threshold value L1 and lower threshold value L2, according to described with route and institute
State the air line distance L of mobile terminal current location, will find described in can be divided into three groups with route：
First group：L≤L2, the service range of all routes within this range can be by the new position of mobile terminal prediction
Put covering, thus the mobile terminal prioritizing selection route with the group in any one be connected, can ensure to service unobstructed；
Second group：L2 ＜ L≤L1, the service range of all routes within this range can also be by mobile terminal prediction
New position covers, but distant or angle is more inclined, when deviation occurs in predicted position, possibly can not ensure the new of reality
Position covers；Therefore when first group of route can not be connected with the mobile terminal, mobile terminal by second group alternately,
And with wherein any one be connected；
3rd group：L ＞ L1, group route too far, can not ensure the seamless rank of service range with the distance of mobile terminal
Connect, therefore do not consider.
When the unicast server obtains the new position of the mobile terminal every time, to the packet feelings with route
Condition is updated, to obtain the available routing iinformation for adapting to current location in time.
Embodiment 4
The present embodiment 4 provides a kind of method for ensureing mobile terminal unicast quality stability on the basis of embodiment 2,
The embodiment 4 further defines the step S2 and also comprised the following steps：
S2.3：When the new position that the mobile terminal calculates can not be by the service range of any route in the range of current lookup
During covering, the unicast server opens caching passage to the mobile terminal, carries out the caching of current media file.
It is route as the new position periphery of the prediction of mobile terminal is not available, in order to ensure unicast services not because lacking route
And interrupt at once, unicast server and caching passage is opened to mobile terminal, mobile terminal can utilize current route service pair
Current media file is cached, to find available alternating path by carrying out transition before.
As shown in figure 5, the step S2.3 comprises the following steps：
S2.3.1：When the new position that the mobile terminal calculates can not be by the service model of any route in the range of current lookup
When enclosing covering, the unicast server sends network interruption to the mobile terminal and reminded；
S2.3.2：After the mobile terminal receives the network interruption prompting, sending caching to the unicast server please
Ask, after the unicast server receives the cache request, open caching passage to the mobile terminal, carry out current media text
The caching of part.
Embodiment 5
As shown in fig. 6, the present embodiment 5 provides one kind on the basis of embodiment 1 ensures that mobile terminal unicast quality is steady
Qualitatively method, the embodiment 5 further define the step S3 and comprised the following steps：
S3.1：The alternating path sends session connection by receiving and by the service request to the mobile terminal；
S3.2：The mobile terminal receives the session connection, with the alternating path by being connected, simultaneously switch off with it is preceding all the way
By connection.
Alternating path from after the service request for receiving mobile terminal, it is necessary to send session connection, mobile terminal to mobile terminal
Receive the session connection and connected with alternating path by confirming, while disconnected with front wing route, can both ensure route service
Seamless connection, avoidance breakout, again may insure that the Service Source of route makes full use of.
Embodiment described above only expresses the several embodiments of the present invention, and its description is more specific and detailed, but simultaneously
Therefore the limitation to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for one of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention
Protect scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
- A kind of 1. method for ensureing mobile terminal unicast quality stability, it is characterised in that comprise the following steps：S1：The position of unicast server timing acquisition mobile terminal, and the service range with currently routeing is compared, under judgement When once the unicast server obtains the position of the mobile terminal, can the service range currently routeing cover the movement The desired location of terminal；S2：When judged result is " can not cover ", the unicast server selects closest outside the route service scope Route as alternating path by, concurrently send service request, in the service request attribute information comprising the mobile terminal with And the content of request service；S3：The alternating path is by receiving and by the service request, the company that now mobile terminal disconnects and currently route Connect, and with the alternating path by being connected.
- 2. ensure the method for mobile terminal unicast quality stability as claimed in claim 1, it is characterised in that the step S1 Described in the method that judges it is as follows：Currently to route as the center of circle, using the farthest signal transmitting range currently routeing as radius, The service range that the border circular areas of formation is as currently route；The mobile terminal is obtained to the unicast server next time During position, the desired location of the mobile terminal be predicted, when the desired location is fully located in the service range, Then think that the service range can cover the mobile terminal；When the desired location is located at outside the service range, then Think that the service range can not cover the mobile terminal.
- 3. ensure the method for mobile terminal unicast quality stability as claimed in claim 1, it is characterised in that the step S1 Comprise the following steps：S1.1：The unicast server sets a time threshold, according to the time threshold, mobile terminal described in timing acquisition Position；S1.2：The unicast server records the translational speed and motion track of the mobile terminal, and calculates accordingly next time The new position of mobile terminal during acquisition；S1.3：The position of reckoning is compared the unicast server with the service range currently routeing, and judges the service Whether scope can cover the new position of the reckoning.
- 4. ensure the method for mobile terminal unicast quality stability as claimed in claim 3, it is characterised in that described mobile whole The projectional technique of the new position at end is as follows：The GPS information of the mobile terminal obtained every time is recorded, calculates the mobile terminal Translational speed and meanwhile generate the mobile route of the mobile terminal, according to prolonging for the translational speed and the mobile route Direction is stretched, estimates new position of the mobile terminal in unicast server acquisition next time positional information.
- 5. ensure the method for mobile terminal unicast quality stability as claimed in claim 1, it is characterised in that the step S2 Comprise the following steps：S2.1, when judged result is " can not cover ", the unicast server is looked into outside the service range of presently described route Look for available route, and therefrom the nearest route of chosen distance be alternating path by；S2.2：By transmission service request, the movement is included in the service request to the alternating path for the unicast server The attribute information of terminal and the content of request service.
- 6. ensure the method for mobile terminal unicast quality stability as claimed in claim 5, it is characterised in that lookup can use road By method it is as follows：Distance threshold is set, and the distance threshold includes upper threshold value L1 and lower threshold value L2, according to described with route and the shifting The air line distance L of dynamic terminal current location, will find described in can be divided into three groups with route：First group：L≤L2, any one during the mobile terminal prioritizing selection is route with the group are connected；Second group：L2 ＜ L≤L1, when first group of route can not be connected with the mobile terminal, mobile terminal is by second group Alternately, and with wherein any one be connected；3rd group：L ＞ L1, group route too far, are not considered with the distance of mobile terminal.
- 7. ensure the method for mobile terminal unicast quality stability as claimed in claim 6, it is characterised in that each list When broadcasting the new position of the server acquisition mobile terminal, it can be updated to described with the packet situation of route.
- 8. ensure the method for mobile terminal unicast quality stability as claimed in claim 3, it is characterised in that the step S2 Also comprise the following steps：S2.3：When the new position that the mobile terminal calculates can not be covered by the service range of any route in the range of current lookup When, the unicast server opens caching passage to the mobile terminal, carries out the caching of current media file.
- 9. ensure the method for mobile terminal unicast quality stability as claimed in claim 8, it is characterised in that the step S2.3 comprises the following steps：S2.3.1：When the new position that the mobile terminal calculates can not be covered by the service range of any route in the range of current lookup Gai Shi, the unicast server send network interruption to the mobile terminal and reminded；S2.3.2：After the mobile terminal receives the network interruption prompting, cache request, institute are sent to the unicast server After stating the unicast server reception cache request, caching passage is opened to the mobile terminal, carries out current media file Caching.
- 10. ensure the method for mobile terminal unicast quality stability as claimed in claim 1, it is characterised in that the step S3 comprises the following steps：S3.1：The alternating path sends session connection by receiving and by the service request to the mobile terminal；S3.2：The mobile terminal receives the session connection, with the alternating path by being connected, simultaneously switches off and currently route Connection.
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