CN107294923A - Adjust the method and device of video coding rate - Google Patents
Adjust the method and device of video coding rate Download PDFInfo
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- CN107294923A CN107294923A CN201610203766.9A CN201610203766A CN107294923A CN 107294923 A CN107294923 A CN 107294923A CN 201610203766 A CN201610203766 A CN 201610203766A CN 107294923 A CN107294923 A CN 107294923A
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- tmmbr
- base station
- video traffic
- video
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/40—Network security protocols
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- 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
-
- 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
- H04L65/613—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio for the control of the source by the destination
-
- 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
- H04L65/65—Network streaming protocols, e.g. real-time transport protocol [RTP] or real-time control protocol [RTCP]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/141—Systems for two-way working between two video terminals, e.g. videophone
Abstract
The invention provides a kind of method and device for adjusting video coding rate, wherein this method includes:Base station obtains the current at least one of information carried out residing for the terminal of video traffic:Channel quality, cell coverage information, system loading;Base station is used for the instruction for indicating adjustment video coding rate according to information structuring;Base station sends the interim maximum Media Stream bit rate request TMMBR for carrying instruction to the terminal for currently carrying out video traffic.By the present invention, the problem of being difficult to ensure that the fluency of video calling under limited LTE system bandwidth and the channel scenario of change fluctuation in correlation technique is solved.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of method and device.
Background technology
Under Long Term Evolution (Long Time Evolution, referred to as LTE) system, VoLTE (voice over LTE) business is
The most basic service business of mobile phone terminal, the demand of wherein video calling is ready to appear.People are freely enjoying the same of high speed Internet access pleasant sensation
When, higher requirement is also proposed to video speech quality, compared to 3G, expectation of the people to video under LTE be also it is increasing,
It is apparent, more smooth, not interim card, no mosaic etc. is all that client is desired.
The code rate of video is divided into different level with reference to described in H264 agreements, and 64kbps is supported referring to table 1. is minimum,
Maximum can arrive 240Mbps, and different video coding rates embodies and different sensory experiences are had to user.But, compile
Bit rate is bigger, it is desirable to LTE system bandwidth it is bigger, and because video calling is two-way services, and common TD-LTE
Under system, up available subframe is very few, when using higher video coding rate, because resource-constrained, scheduling can be caused too late
When, occur abandoning bag, be embodied in from the point of view of user, be exactly video blur, interim card, mosaic, image stops etc., not only to system
Resource causes larger waste, while higher user service is not provided yet, under TDD proportionings 2, when video rate is super
When crossing 1Mbps, the center that terminal can only stay in cell could ensure Consumer's Experience, somewhat be moved to cell far point, video image
Will interim card it is fuzzy serious.
Table 1
VoLTE business, is divided into speech business and video traffic, be all RTP (Real-time Transport Protocol,
Referred to as RTP) packet.In the type of RTP packets, also a kind of RTCP Real-time Transport Control Protocol (Real-time Transport
Control Protocol, referred to as RTCP) business packet is the control information for sending RTP bags.RTCP is surrounded by a variety of
Form, sender (sender report, referred to as SR), Receiver Report (Receiver Report, referred to as RR) etc. is all
It is common RTCP bags, for transmitting the number of RTP bags transmission, packet loss number etc..Also a kind of RTCP bags blocked,
(Temporary Maximum Media Stream Bit Rate Request are referred to as interim maximum Media Stream bit rate request
TMMBR), with reference to agreement RFC5104.
After terminal receives TMMBR rate adjustment requests, reply interim maximum media stream bit rates and notify (Temporary
Maximum Media Stream Bit Rate Notification, referred to as TMMBN), subsequent terminal can be according to the speed after request
Rate carries out coding output.However, how base station side is in limited LTE system bandwidth and the channel of change fluctuation in correlation technique
Under scape, moreover it is possible to ensure the fluency and definition of video calling just into the task of top priority.For the above mentioned problem in correlation technique,
Not yet there is effective solution at present.
The content of the invention
The invention provides a kind of method and device for adjusting video coding rate, at least to solve in correlation technique in limited LTE
The problem of fluency of video calling being difficult to ensure that under system bandwidth and the channel scenario of change fluctuation.
According to an aspect of the invention, there is provided a kind of method for adjusting video coding rate, including:Base station is obtained currently just
Carrying out at least one of information residing for the terminal of video traffic:Channel quality, cell coverage information, system loading;Institute
State the instruction that base station is configured to indicate adjustment video coding rate according to described information;The base station is to currently carrying out video
The terminal of business sends the interim maximum Media Stream bit rate request TMMBR for carrying the instruction.
Further, base station is stated to be configured to indicate that the instruction of adjustment video coding rate includes according to described information:The base station
Judge whether described information meets the condition of one below:First condition:The video traffic of the terminal is without packet loss and without video
Subdistrict position residing for traffic scheduling delay and the terminal is less than the first pre-determined distance and terminal institute from the base station distance
Locate cell load and be less than the first predetermined threshold value;Second condition:The video traffic of the terminal produces packet loss or the video traffic
Scheduler latency, or subdistrict position residing for the terminal are small more than residing for the second pre-determined distance or the terminal from the base station distance
Area's load is more than the second predetermined threshold value;When judging that described information meets the first condition, the base station construction lifting video is compiled
First TMMBR of bit rate;When judging that described information meets the second condition, the base station construction reduction Video coding
2nd TMMBR of speed.
Further, the first TMMBR of the base station construction lifting video coding rate includes:Base station receives currently to enter
The RTCP bags sent in the terminal of row video traffic;The rule of giving out a contract for a project of the base station study RTCP reports, carries out RTP packet header filters
Ripple, the information that speed is encoded for being lifted is added in the first TMMBR;The base station construction lifting video coding rate
The 2nd TMMBR include:Base station receives the RTCP bags sent in the current terminal for carrying out video traffic;The base station
Learn the rule of giving out a contract for a project of RTCP reports, carry out RTP packet header filtering, the information for reducing code rate is added to described second
In TMMBR.
Further, the base station sends the interim most matchmaker for carrying the instruction to the terminal for currently carrying out video traffic
Body stream bit rates request TMMBR includes:Sent out by core net to the second terminal for currently carrying out video traffic the base station
The first TMMBR is sent, and interim maximum media stream bit rates are sent to first terminal by the second terminal and is notified
TMMBN, wherein, the first terminal sends SIP UPDATE information to renegotiate new speed to the second terminal;Or,
The base station sends the 2nd TMMBR by core net to the second terminal for currently carrying out video traffic, and passes through institute
State second terminal and send TMMBN to the first terminal, wherein, the first terminal sends SIP to the second terminal
UPDATE information is to renegotiate new speed.
Further, the targeted rate after carrying adjustment is sent to the terminal for currently carrying out video traffic in the base station
After interim maximum Media Stream bit rate request TMMBR, methods described includes:The base station receives and currently carries out video
The TMMBN that the terminal response of business is sent in the TMMBR.
Further, the targeted rate after carrying adjustment is sent to the terminal for currently carrying out video traffic in the base station
After interim maximum Media Stream bit rate request TMMBR, methods described includes:Do not receive and currently enter in the given time
The terminal response of row video traffic is when the TMMBN that the TMMBR is sent, and the base station repeats pre-determined number and sent
TMMBR。
According to another aspect of the present invention there is provided a kind of method for adjusting video coding rate, including:Currently carry out
The first terminal of video traffic receives and is currently carrying out the interim maximum that the second terminal of video traffic is sent in response to TMMBR
Media Stream bit rate request TMMBN, wherein, the TMMBR carries base station and adjusts video coding rate according to information
Target encoding rate;The first terminal sends SIP UPDATE information with weight according to the TMMBN to the second terminal
Newly consult new speed;Wherein, described information includes at least one of:Channel quality, cell coverage information, system loading.
According to a further aspect of the invention there is provided a kind of device for adjusting video coding rate, applied to base station side, including:
Acquisition module, for obtaining the current at least one of information carried out residing for the terminal of video traffic:It is channel quality, small
Area's coverage information, system loading;Adjusting module, the finger for being configured to indicate adjustment video coding rate according to described information
Order;First sending module, the interim most matchmaker of the instruction is carried for being sent to the terminal for currently carrying out video traffic
Body stream bit rates ask TMMBR.
Further, the adjusting module includes:Judging unit, for judging whether described information meets the condition of one below:
First condition:The video traffic of the terminal is without packet loss and without subdistrict position residing for the delay of video traffic scheduling and the terminal
It is less than cell load residing for the first pre-determined distance and the terminal from the base station distance and is less than the first predetermined threshold value;Second condition:
The video traffic of the terminal produces packet loss or the video traffic scheduler latency, or subdistrict position residing for the terminal is from described
Base station distance is more than cell load residing for the second pre-determined distance or the terminal and is more than the second predetermined threshold value;Lift unit, is used for
When judging that described information meets the first condition, the first TMMBR of construction lifting video coding rate;Reduce unit,
For when judging that described information meets the second condition, construction to reduce the 2nd TMMBR of video coding rate.
Further, the lift unit includes:First receiving subelement, for receiving the current end for carrying out video traffic
The RTCP bags sent in end;First processing subelement, the rule of giving out a contract for a project for learning RTCP reports carries out RTP packet header filtering,
It will be added to for the information for lifting coding speed in the first TMMBR;The reduction unit includes:Second receiving subelement,
For receiving the RTCP bags that the first terminal in the current terminal for carrying out video traffic is sent;Second processing subelement, is used for
Learn the rule of giving out a contract for a project of RTCP reports, carry out RTP packet header filtering, the second target encoding rate after adjustment is added to second
In TMMBR.
11. device according to claim 10, it is characterised in that
First sending module, described first is sent for core net to the second terminal for currently carrying out video traffic
TMMBR, and interim maximum media stream bit rates notice TMMBN is sent to the first terminal by the second terminal, its
In, the first terminal sends SIP UPDATE information to renegotiate new speed to the second terminal;Or, pass through core
Net sends the 2nd TMMBR to the second terminal for currently carrying out video traffic, and by the second terminal to described
First terminal sends TMMBN, wherein, the first terminal sends SIP UPDATE information with again to the second terminal
Consult new speed.
Further, the targeted rate after carrying adjustment is sent to the terminal for currently carrying out video traffic in the base station
After interim maximum Media Stream bit rate request TMMBR, described device includes:First receiving module, for receiving currently just
The TMMBN sent in the terminal response for carrying out video traffic in the TMMBR.
Further, the targeted rate after carrying adjustment is sent to the terminal for currently carrying out video traffic in the base station
After interim maximum Media Stream bit rate request TMMBR, described device includes:Second sending module, in the scheduled time
The current terminal response for carrying out video traffic is not received inside when the TMMBN that the TMMBR is sent, is repeated predetermined time
Number sends TMMBR.
According to a further aspect of the invention there is provided a kind of device for adjusting video coding rate is managed, applied to currently entering
The first terminal side of row video traffic, including:Second receiving module, for receiving current the second end for carrying out video traffic
The interim maximum Media Stream bit rate request TMMBN sent in response to TMMBR is held, wherein, the TMMBR is carried
Instruction for indicating adjustment video coding rate;3rd sending module, for according to the TMMBN to the second terminal
SIP UPDATE information is sent to renegotiate new speed;Wherein, described information includes at least one of:Channel quality,
Cell coverage information, system loading.
By the present invention, base station obtains the current at least one of information carried out residing for the terminal of video traffic:Channel matter
Amount, cell coverage information, system loading, and then base station is configured to indicate the finger of adjustment video coding rate according to described information
Order;Therefore, base station sends the interim maximum media stream bit rates for carrying the instruction to the terminal for currently carrying out video traffic
TMMBR is asked, is difficult to so as to solve in correlation technique under limited LTE system bandwidth and the channel scenario of change fluctuation
Ensure the fluency of video calling, improve the stability of video calling.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, of the invention shows
Meaning property embodiment and its illustrate be used for explain the present invention, do not constitute inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart one of the method for adjustment video coding rate according to embodiments of the present invention;
Fig. 2 is the flowchart 2 of the method for adjustment video coding rate according to embodiments of the present invention;
Fig. 3 is the structured flowchart one of the device of adjustment video coding rate according to embodiments of the present invention;
Fig. 4 is the structured flowchart two of the device of adjustment video coding rate according to embodiments of the present invention;
Fig. 5 is according to TMMBR bags form schematic diagram in alternative embodiment of the present invention;
Fig. 6 is the flow chart that up speed governing is carried out according to the base station of alternative embodiment of the present invention;
Fig. 7 is the flow chart that descending speed governing is carried out according to the base station of alternative embodiment of the present invention;
Fig. 8 is the base station according to alternative embodiment of the present invention and the relation schematic diagram of core network termination.
Embodiment
Describe the present invention in detail below with reference to accompanying drawing and in conjunction with the embodiments.It should be noted that in the case where not conflicting,
The feature in embodiment and embodiment in the application can be mutually combined.
It should be noted that term " first ", " second " in description and claims of this specification and above-mentioned accompanying drawing etc. is to use
In distinguishing similar object, without for describing specific order or precedence.
A kind of method for adjusting video coding rate is provided in the present embodiment, and Fig. 1 is that adjustment according to embodiments of the present invention is regarded
The flow chart one of the method for frequency code rate, as shown in figure 1, the flow comprises the following steps:
Step S102:Base station obtains the current at least one of information carried out residing for the terminal of video traffic:Channel quality,
Cell coverage information, system loading;
Step S104:Base station is used for the instruction for indicating adjustment video coding rate according to information structuring;
Step S106:Base station sends the interim maximum Media Stream ratio for carrying the instruction to the terminal for currently carrying out video traffic
Special rate asks TMMBR.
By the step S102 to step S106 of the present embodiment, base station obtain it is current carrying out residing for the terminal of video traffic with
At least one lower information:Channel quality, cell coverage information, system loading, and then base station is configured to finger according to described information
Show the instruction of adjustment video coding rate;Therefore, base station sends to the terminal for currently carrying out video traffic and carries the instruction
Interim maximum Media Stream bit rate request TMMBR, so as to solve in correlation technique in limited LTE system bandwidth and change
The fluency of video calling is difficult to ensure that under the channel scenario for changing fluctuation, the stability of video calling is improved.
In the optional embodiment of the present embodiment, it is configured to refer to according to described information for the base station being related in step S104
Show the mode of the instruction of adjustment video coding rate, can be in the present embodiment:
Step S104-1:Base station judges whether information meets the condition of one below:First condition:The video traffic of terminal without packet loss,
And be less than without subdistrict position residing for the delay of video traffic scheduling and terminal from base station distance small residing for the first pre-determined distance and terminal
Area's load is less than the first predetermined threshold value;Second condition:The video traffic of terminal produces packet loss or video traffic scheduler latency, or
Subdistrict position residing for terminal is more than cell load residing for the second pre-determined distance or terminal from base station distance and is more than the second predetermined threshold value;
Step S104-2:When judging that information meets first condition, the first TMMBR of base station construction lifting video coding rate;
Step S104-3:When judging that information meets second condition, the 2nd TMMBR of base station construction reduction video coding rate.
It should be noted that step S104-2 can be in concrete application scene:The of base station construction lifting video coding rate
One TMMBR includes:Base station receives the RTCP bags sent in the current terminal for carrying out video traffic;Base station learns RTCP
The rule of giving out a contract for a project of report, carries out RTP packet header filtering, and the information that speed is encoded for being lifted is added in the first TMMBR;
Step S104-3 can be in concrete application scene:2nd TMMBR of base station construction lifting video coding rate includes:
Base station receives the RTCP bags sent in the current terminal for carrying out video traffic;The rule of giving out a contract for a project of base station study RTCP reports, enters
Row RTP packet header is filtered, and the information for reducing code rate is added in the 2nd TMMBR.
In another optional embodiment of the present embodiment, for the base station that is related in the present embodiment step S106 to currently just
The interim maximum Media Stream bit rate request TMMBR of the targeted rate after carrying adjustment is sent in the terminal for carrying out video traffic
Mode, can realize in the following way:Sent out by core net to the second terminal for currently carrying out video traffic base station
The first TMMBR is sent, and interim maximum media stream bit rates are sent to first terminal by second terminal and notifies TMMBN, its
In, first terminal sends SIP UPDATE information to renegotiate new speed to second terminal;Or, base station by core net to
The current second terminal for carrying out video traffic sends the 2nd TMMBR, and is sent by second terminal to first terminal
TMMBN, wherein, first terminal sends SIP UPDATE information to renegotiate new speed to second terminal.
Alternatively, sent in base station to the terminal for currently carrying out video traffic the targeted rate after carrying adjustment it is interim most
After big media stream bit rates request TMMBR, the method for the present embodiment includes:Base station receives and currently carries out video traffic
The TMMBN that is sent in TMMBR of terminal response.
Based on this, sent in base station to the terminal for currently carrying out video traffic the targeted rate after carrying adjustment it is interim most
After big media stream bit rates request TMMBR, the method for the present embodiment includes:Do not receive and currently enter in the given time
The terminal response of row video traffic is when the TMMBN that TMMBR is sent, and base station repeats pre-determined number and sends TMMBR.
Fig. 2 is the flowchart 2 of the method for adjustment video coding rate according to embodiments of the present invention, as shown in Fig. 2 this method
The step of include:
Step S202:The current first terminal for carrying out video traffic receives the current second terminal for carrying out video traffic and rung
Should in TMMBR send interim maximum Media Stream bit rate request TMMBN, wherein, TMMBR carry base station according to
Information adjusts video coding rate;
Step S204:First terminal sends SIP UPDATE information to renegotiate new speed according to TMMBN to second terminal
To target encoding rate;Wherein, information includes at least one of:Channel quality, cell coverage information, system loading.
Through the above description of the embodiments, those skilled in the art can be understood that the side according to above-described embodiment
Method can add the mode of required general hardware platform to realize by software, naturally it is also possible to by hardware, but in many cases before
Person is more preferably embodiment.Understood based on such, technical scheme substantially makes tribute to prior art in other words
The part offered can be embodied in the form of software product, and the computer software product is stored in a storage medium (such as
ROM/RAM, magnetic disc, CD) in, including some instructions to cause a station terminal equipment (can be mobile phone, computer,
Server, or the network equipment etc.) perform method described in each embodiment of the invention.
A kind of device for adjusting video coding rate is additionally provided in the present embodiment, and the device is used to realize above-described embodiment and excellent
Embodiment is selected, repeating no more for explanation had been carried out.As used below, term " module " can realize predetermined work(
The combination of the software and/or hardware of energy.Although the device described by following examples is preferably realized with software, hardware,
Or the realization of the combination of software and hardware is also that may and be contemplated.
Fig. 3 is the structured flowchart one of the device of adjustment video coding rate according to embodiments of the present invention, and the device is applied to base station
Side, as shown in figure 3, the device includes:Acquisition module 32, is currently being carried out residing for the terminal of video traffic for obtaining
At least one of information:Channel quality, cell coverage information, system loading;Adjusting module 34, is coupled with acquisition module 32
Connection, for adjusting video coding rate according to information;First sending module 36, is of coupled connections with adjusting module 34, for
The current terminal for carrying out video traffic sends the interim maximum Media Stream bit rate request for carrying the targeted rate after adjustment
TMMBR。
Alternatively, the adjusting module 34 includes:Judging unit, for judging whether information meets the condition of one below:First
Condition:The video traffic of terminal is without packet loss and small from base station distance without subdistrict position residing for the delay of video traffic scheduling and terminal
It is less than the first predetermined threshold value in cell load residing for the first pre-determined distance and terminal;Second condition:The video traffic of terminal is produced
Packet loss or video traffic scheduler latency, or subdistrict position residing for terminal are more than the second pre-determined distance or terminal institute from base station distance
Locate cell load and be more than the second predetermined threshold value;Lift unit, for when judging that information meets first condition, construction to lift video
First TMMBR of code rate;Unit is reduced, for when judging that information meets second condition, construction to reduce Video coding
2nd TMMBR of speed.
Alternatively, lift unit includes:First receiving subelement, sends out for receiving in the current terminal for carrying out video traffic
The RTCP bags sent;First processing subelement, the rule of giving out a contract for a project for learning RTCP reports carries out RTP packet header filtering, will used
It is added in the information of lifting coding speed in the first TMMBR;Reduction unit includes:Second receiving subelement, works as receiving
The RTCP bags that first terminal in the preceding terminal for carrying out video traffic is sent;Second processing subelement, for learning RTCP
The rule of giving out a contract for a project of report, carries out RTP packet header filtering, the second target encoding rate after adjustment is added in the 2nd TMMBR.
Alternatively, first sending module, first is sent for core net to the second terminal for currently carrying out video traffic
TMMBR, and interim maximum media stream bit rates notice TMMBN is sent to first terminal by second terminal, wherein, first
Terminal sends SIP UPDATE information to renegotiate new speed to second terminal;Or, by core net to currently carrying out
The second terminal of video traffic sends the 2nd TMMBR, and sends TMMBN to first terminal by second terminal, wherein,
First terminal sends SIP UPDATE information to renegotiate new speed to second terminal.
Alternatively, sent in base station to the terminal for currently carrying out video traffic the targeted rate after carrying adjustment it is interim most
After big media stream bit rates request TMMBR, device includes:First receiving module, currently video is carried out for receiving
The TMMBN that the terminal response of business is sent in TMMBR.
In this implementation dynamics starves optional embodiment, sent in base station to the terminal for currently carrying out video traffic and carry tune
After the interim maximum Media Stream bit rate request TMMBR of targeted rate after whole, the device can also include:Second sends
Module, currently the TMMBN that the terminal response of video traffic is sent in TMMBR is being carried out for not receiving in the given time
When, repeat pre-determined number and send TMMBR.
Fig. 4 is the structured flowchart two of the device of adjustment video coding rate according to embodiments of the present invention, and the device is applied to current
The first terminal side of video traffic is being carried out, as shown in figure 4, the device includes:Second receiving module 42, works as receiving
The interim maximum Media Stream bit rate request TMMBN that the preceding second terminal for carrying out video traffic is sent in response to TMMBR,
Wherein, TMMBR carries the target encoding rate that base station adjusts video coding rate according to information;3rd sending module 44,
It is of coupled connections with the second receiving module 42, for being assisted again to second terminal transmission SIP UPDATE information according to TMMBN
The new speed of business;Wherein, information includes at least one of:Channel quality, cell coverage information, system loading.
It should be noted that above-mentioned modules can be by software or hardware to realize, for the latter, can by with
Under type is realized, but not limited to this:Above-mentioned module is respectively positioned in same processor;Or, above-mentioned module is located at multiple places respectively
Manage in device.
The present invention is illustrated with reference to the alternative embodiment of the present invention;
This alternative embodiment provides a kind of system and method for adaptive regulating video speed.According to the system of this alternative embodiment
And method can allow client to exist according to channel quality, MPS process, system loading etc., the code rate of adaptive regulating video
In the case of unaware, Video coding is adjusted in real time, customer experience is improved, and system bandwidth is saved in the LTE coverings of enhancing video.
In this alternative embodiment, channel quality of the base station with reference to residing for terminal, MPS process, system loading etc., judge terminal
Current video rate whether meets following condition (1) or (2), it is necessary to which explanation, in the present embodiment up-downgoing is independently sentenced
It is fixed:
(1), if it is determined that being video traffic without packet loss, and without scheduler latency, and subdistrict position residing for terminal is excellent, and cell load
When lighter, it is possible to determine that can suitably lift video coding rate for the video user, Consumer's Experience is lifted.
(2), if it is determined that there is packet loss for video traffic, either scheduling is not in time or subdistrict position residing for terminal is bad, or
When there is congestion in cell, it is possible to determine that can suitably reduce video coding rate for the video user, it is ensured that Consumer's Experience.
Based on above-mentioned (1) and (2), the RTCP bags that base station parsing terminal is sent learn the rule of giving out a contract for a project of RTCP bags, entered
Row RTP packet header is filtered, and constructs TMMBR, the targeted rate of video is inserted in TMMBR bags.Fig. 5 is according to the present invention
TMMBR bags form schematic diagram in alternative embodiment, as described in Figure 5, with reference to agreement RFC5104.
Fig. 6 is the flow chart that up speed governing is carried out according to the base station of alternative embodiment of the present invention, as shown in fig. 6, when the video is whole
Hold UE1 up satisfaction (1) or (2) in condition when, base station on the downlink of the terminal UE 1, send request
The TMMBR of raising speed or reduction of speed.The terminal UE 1 receives base station and issued after the TMMBR of oneself, and it is request speed change to parse
RTCP information, the video RTP bags that subsequent terminal UE 1 can on uplink after transmission rate adjustment.Or,
Fig. 7 is the flow chart that descending speed governing is carried out according to the base station of alternative embodiment of the present invention, as shown in fig. 7, when the video is whole
Hold UE1 descending satisfaction (1) or (2) in condition when, base station in the up-link of the terminal UE 1, send request
The TMMBR of raising speed or reduction of speed.Distant terminal UE2 receives core net and is transmitted to after the TMMBR of oneself, and it is to ask to parse
Seek the RTCP information of speed change, the video RTP bags that subsequent distant terminal UE2 can on uplink after transmission rate adjustment.
What UE1 was received will be the video RTP bags after UE2 adjustment speed.
By this alternative embodiment, video user can be adjusted with the information self-adapting such as residing subdistrict position and cell itself load
Video rate, when terminal is moved to cell far point, video carries out reduction of speed, while saving system bandwidth, it can also be ensured that regard
The Consumer's Experience of frequency terminal, no interim card, no mosaic, image is smooth.The LTE coverings of video user are also improved simultaneously.When
When cell load is gently and terminal is moved to center of housing estate near point, there is provided apparent comfortable for lifting video coding rate that can be appropriate
Video tastes.
Fig. 8 is the base station according to alternative embodiment of the present invention and the relation schematic diagram of core network termination, as shown in figure 8, eNodeB1
It is the first operator, eNodeB2 is the second operator base station.Following examples are carried out on eNodeB1.In eNodeB1
One volte UE1 of lower access, another terminal is placed under other operators eNodeB2 farther out, is volte UE2.Need
Illustrate, processing of two terminals all under same base station is consistent.
Embodiment 1:
This programme step is as follows:
Step S302:ENodeB1 cells are unloaded.Two terminals carry out video calling, and video rate is 1Mbps.Control UE1
Pole near point under eNodeB1 cells.After calling through, hand-held UE1 is slowly moved to cell edge from center of housing estate.
Step S304:ENodeB1 condition criterion module finds that UE1 is up and packet loss occurs, and time delay also becomes big, notifies eNodeB1
Downlink user face, construct the TMMBR RTCP bags of reduction of speed, fill in video rate in TMMBR for 384kbps, head is big
Small is filter value 40B.
Step S306:UE1 is received after the TMMBR of reduction of speed, replys TMMBN to UE2, then, the up hairs of UE1
The video message sent is transmitted according to 384kbps speed.UE1 upstream rate realizes reduction of speed.
Embodiment 2:
This programme step is as follows:
Step S402:ENodeB1 cells are unloaded.Two terminals carry out video calling, and video rate is 64kbps.Control UE1
Far point under eNodeB1 cells.After calling through, hand-held UE1 is slowly moved to center of housing estate from cell edge.
Step S404:ENodeB1 condition criterion module finds that UE1 is up without packet loss, and no time delay, no congestion, load is low,
ENodeB1 downlink user face is notified, the TMMBR RTCP bags of raising speed are constructed, the video rate filled in TMMBR is
128kbps, head size is filter value 40B.
Step S406:UE1 is received after the TMMBR of raising speed, replys TMMBN to UE2, then, the up hairs of UE1
The video message sent is transmitted according to 128kbps speed.UE1 upstream rate realizes raising speed.
Embodiment 3:
This programme step is as follows:
Step S502:ENodeB1 cells are unloaded.Two terminals carry out video calling, and video rate is 1Mbps.Control UE1
Pole near point under eNodeB1 cells.After calling through, hand-held UE1 is slowly moved to cell edge from center of housing estate.
Step S504:ENodeB1 condition criterion module finds that UE1 is descending and packet loss occurs, and time delay also becomes big, notifies eNodeB1
Uplink user face, construct the TMMBR RTCP bags of reduction of speed, fill in video rate in TMMBR for 384kbps, head is big
Small is filter value 40B.
Step S506:UE2 is received after the TMMBR of reduction of speed, replys TMMBN to UE1, then, the up hairs of UE2
The video message sent is transmitted according to 384kbps speed.UE1 downstream rate realizes reduction of speed.
Embodiment 4:
This programme step is as follows:
Step S602:ENodeB1 cells are unloaded.Two terminals carry out video calling, and video rate is 64kbps.Control UE1
Far point under eNodeB1 cells.After calling through, hand-held UE1 is slowly moved to center of housing estate from cell edge.
Step S604:ENodeB1 condition criterion module finds that UE1 is descending without packet loss, and no time delay, no congestion, load is low,
ENodeB1 uplink user face is notified, the TMMBR RTCP bags of raising speed are constructed, the video rate filled in TMMBR is
128kbps, head size is filter value 40B.
Step S606:UE2 is received after the TMMBR of raising speed, replys TMMBN to UE1, then, the up hairs of UE2
The video message sent is transmitted according to 128kbps speed.UE1 downstream rate realizes raising speed.
Embodiments of the invention additionally provide a kind of storage medium.Alternatively, in the present embodiment, above-mentioned storage medium can be by
It is set to the program code that storage is used to perform following steps:
Step S1:Base station obtains the current at least one of information carried out residing for the terminal of video traffic:Channel quality,
Cell coverage information, system loading;
Step S2:Base station is used for the instruction for indicating adjustment video coding rate according to information structuring;
Step S3:Base station sends the interim maximum Media Stream bit for carrying the instruction to the terminal for currently carrying out video traffic
Rate asks TMMBR.
Embodiments of the invention additionally provide a kind of storage medium.Alternatively, in the present embodiment, above-mentioned storage medium can be by
It is set to the program code that storage is used to perform following steps:
Step S1:The current first terminal for carrying out video traffic receives the current second terminal response for carrying out video traffic
The interim maximum Media Stream bit rate request TMMBN sent in TMMBR, wherein, TMMBR carries base station according to letter
Breath adjustment video coding rate;
Step S2:First terminal sends SIP UPDATE information to renegotiate new speed extremely according to TMMBN to second terminal
Target encoding rate;Wherein, information includes at least one of:Channel quality, cell coverage information, system loading.
Alternatively, the specific example in the present embodiment may be referred to the example described in above-described embodiment and optional embodiment,
The present embodiment will not be repeated here.
Obviously, those skilled in the art should be understood that above-mentioned each module of the invention or each step can use general calculating
Device realizes that they can be concentrated on single computing device, or be distributed on the network that multiple computing devices are constituted,
Alternatively, they can be realized with the executable program code of computing device, it is thus possible to be stored in storage device
In performed by computing device, and in some cases, can be to perform shown or described step different from order herein
Suddenly, they are either fabricated to each integrated circuit modules respectively or be fabricated to the multiple modules or step in them single
Integrated circuit modules are realized.So, the present invention is not restricted to any specific hardware and software combination.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for those skilled in the art
For, the present invention can have various modifications and variations.Any modification within the spirit and principles of the invention, being made, etc.
With replacement, improvement etc., it should be included in the scope of the protection.
Claims (14)
1. a kind of method for adjusting video coding rate, it is characterised in that including:
Base station obtains the current at least one of information carried out residing for the terminal of video traffic:Channel quality, cell
Coverage information, system loading;
The base station is configured to indicate the instruction of adjustment video coding rate according to described information;
The base station sends the interim maximum Media Stream ratio for carrying the instruction to the terminal for currently carrying out video traffic
Special rate asks TMMBR.
2. according to the method described in claim 1, it is characterised in that state base station and be configured to indicate adjustment video according to described information
The instruction of code rate includes:
The base station judges whether described information meets the condition of one below:
First condition:The video traffic of the terminal is without packet loss and without residing for the delay of video traffic scheduling and the terminal
Subdistrict position is less than cell load residing for the first pre-determined distance and the terminal from the base station distance and is less than the first default threshold
Value;
Second condition:The video traffic of the terminal produces packet loss or the video traffic scheduler latency, or the terminal
It is pre- more than second that residing subdistrict position is more than cell load residing for the second pre-determined distance or the terminal from the base station distance
If threshold value;
When judging that described information meets the first condition, the first of the base station construction lifting video coding rate
TMMBR;
When judging that described information meets the second condition, the second of the base station construction reduction video coding rate
TMMBR。
3. method according to claim 2, it is characterised in that
First TMMBR of the base station construction lifting video coding rate includes:Base station receives and currently carries out video
The RTCP bags sent in the terminal of business;The rule of giving out a contract for a project of the base station study RTCP reports, carries out RTP packet header filtering,
It will be added to for the information for lifting coding speed in the first TMMBR;
2nd TMMBR of the base station construction lifting video coding rate includes:Base station receives and currently carries out video
The RTCP bags sent in the terminal of business;The rule of giving out a contract for a project of the base station study RTCP reports, carries out RTP packet header filtering,
The information for reducing code rate is added in the 2nd TMMBR.
4. method according to claim 3, it is characterised in that sent out to the terminal for currently carrying out video traffic the base station
The interim maximum Media Stream bit rate request TMMBR for carrying the instruction is sent to include:
The base station sends the first TMMBR by core net to the second terminal for currently carrying out video traffic,
And interim maximum media stream bit rates notice TMMBN is sent to first terminal by the second terminal, wherein, it is described
First terminal sends SIP UPDATE information to renegotiate new speed to the second terminal;Or,
The base station sends the 2nd TMMBR by core net to the second terminal for currently carrying out video traffic,
And TMMBN is sent to the first terminal by the second terminal, wherein, the first terminal is whole to described second
End sends SIP UPDATE information to renegotiate new speed.
5. according to the method described in claim 1, it is characterised in that in the base station to the terminal for currently carrying out video traffic
Transmission is carried after the interim maximum Media Stream bit rate request TMMBR of the targeted rate after adjustment, methods described bag
Include:
The base station receives and is currently carrying out the TMMBN that the terminal response of video traffic is sent in the TMMBR.
6. method according to claim 5, it is characterised in that in the base station to the terminal for currently carrying out video traffic
Transmission is carried after the interim maximum Media Stream bit rate request TMMBR of the targeted rate after adjustment, methods described bag
Include:
Do not receive what the current terminal response for carrying out video traffic was sent in the TMMBR in the given time
During TMMBN, the base station repeats pre-determined number and sends TMMBR.
7. a kind of method for adjusting video coding rate, it is characterised in that including:
The current first terminal for carrying out video traffic receive the current second terminal for carrying out video traffic in response to
The interim maximum Media Stream bit rate request TMMBN that TMMBR is sent, wherein, the TMMBR carries base station
The target encoding rate of video coding rate is adjusted according to information;
The first terminal sends SIP UPDATE information to renegotiate according to the TMMBN to the second terminal
New speed;
Wherein, described information includes at least one of:Channel quality, cell coverage information, system loading.
8. a kind of device for adjusting video coding rate, applied to base station side, it is characterised in that including:
Acquisition module, for obtaining the current at least one of information carried out residing for the terminal of video traffic:Channel
Quality, cell coverage information, system loading;
Adjusting module, the instruction for being configured to indicate adjustment video coding rate according to described information;
First sending module, for sent to the terminal for currently carrying out video traffic carry the instruction it is interim most
Big media stream bit rates request TMMBR.
9. device according to claim 8, it is characterised in that the adjusting module includes:
Judging unit, for judging whether described information meets the condition of one below:
First condition:The video traffic of the terminal is without packet loss and without residing for the delay of video traffic scheduling and the terminal
Subdistrict position is less than cell load residing for the first pre-determined distance and the terminal from the base station distance and is less than the first default threshold
Value;
Second condition:The video traffic of the terminal produces packet loss or the video traffic scheduler latency, or the terminal
It is pre- more than second that residing subdistrict position is more than cell load residing for the second pre-determined distance or the terminal from the base station distance
If threshold value;
Lift unit, for when judging that described information meets the first condition, the of construction lifting video coding rate
One TMMBR;
Unit is reduced, for when judging that described information meets the second condition, construction reduces the of video coding rate
Two TMMBR.
10. device according to claim 9, it is characterised in that
The lift unit includes:First receiving subelement, sends out for receiving in the current terminal for carrying out video traffic
The RTCP bags sent;First processing subelement, the rule of giving out a contract for a project for learning RTCP reports carries out RTP packet header filtering,
It will be added to for the information for lifting coding speed in the first TMMBR;
The reduction unit includes:Second receiving subelement, for receiving in the current terminal for carrying out video traffic
The RTCP bags that first terminal is sent;Second processing subelement, the rule of giving out a contract for a project for learning RTCP reports, carries out RTP
Packet header is filtered, and the second target encoding rate after adjustment is added in the 2nd TMMBR.
11. device according to claim 10, it is characterised in that
First sending module, described first is sent for core net to the second terminal for currently carrying out video traffic
TMMBR, and interim maximum media stream bit rates notice TMMBN is sent to the first terminal by the second terminal,
Wherein, the first terminal sends SIP UPDATE information to renegotiate new speed to the second terminal;Or, it is logical
Cross core net and send the 2nd TMMBR to the second terminal for currently carrying out video traffic, and pass through described second
Terminal sends TMMBN to the first terminal, wherein, the first terminal sends SIP to the second terminal
UPDATE information is to renegotiate new speed.
12. device according to claim 10, it is characterised in that in the base station to the terminal for currently carrying out video traffic
Transmission is carried after the interim maximum Media Stream bit rate request TMMBR of the targeted rate after adjustment, described device bag
Include:
First receiving module, sends for receiving the current terminal response for carrying out video traffic in the TMMBR
TMMBN。
13. device according to claim 12, it is characterised in that in the base station to the terminal for currently carrying out video traffic
Transmission is carried after the interim maximum Media Stream bit rate request TMMBR of the targeted rate after adjustment, described device bag
Include:
Second sending module, currently the terminal response of video traffic is being carried out in described for not receiving in the given time
During the TMMBN that TMMBR is sent, repeat pre-determined number and send TMMBR.
14. a kind of device for adjusting video coding rate, applied to the first terminal side for currently carrying out video traffic, its feature exists
In, including:
Second receiving module, sends for receiving the current second terminal for carrying out video traffic in response to TMMBR
Interim maximum Media Stream bit rate request TMMBN, wherein, the TMMBR is carried for indicating that adjustment video is compiled
The instruction of bit rate;
3rd sending module, for sending SIP UPDATE information to the second terminal with weight according to the TMMBN
Newly consult new speed;
Wherein, described information includes at least one of:Channel quality, cell coverage information, system loading.
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CN201610203766.9A CN107294923A (en) | 2016-04-01 | 2016-04-01 | Adjust the method and device of video coding rate |
PCT/CN2017/078789 WO2017167224A1 (en) | 2016-04-01 | 2017-03-30 | Method and device for adjusting video encoding rate |
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Cited By (2)
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CN113316005A (en) * | 2021-04-20 | 2021-08-27 | 新华三技术有限公司 | Method for adjusting video code rate and communication system |
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CN115396012B (en) * | 2022-08-24 | 2023-06-02 | 中国联合网络通信集团有限公司 | Unmanned aerial vehicle data transmission method, system, electronic equipment and storage medium |
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