CN107294923A - Adjust the method and device of video coding rate - Google Patents

Adjust the method and device of video coding rate Download PDF

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Publication number
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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CN
China
Prior art keywords
terminal
tmmbr
base station
video traffic
video
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN201610203766.9A
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Chinese (zh)
Inventor
王蕾
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ZTE Corp
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ZTE Corp
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Publication date
Application filed by ZTE Corp filed Critical ZTE Corp
Priority to CN201610203766.9A priority Critical patent/CN107294923A/en
Priority to PCT/CN2017/078789 priority patent/WO2017167224A1/en
Publication of CN107294923A publication Critical patent/CN107294923A/en
Withdrawn legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/40Network security protocols
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/60Network streaming of media packets
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/60Network streaming of media packets
    • H04L65/61Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio
    • H04L65/613Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio for the control of the source by the destination
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/60Network streaming of media packets
    • H04L65/65Network streaming protocols, e.g. real-time transport protocol [RTP] or real-time control protocol [RTCP]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00Television systems
    • H04N7/14Systems for two-way working
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00Television systems
    • H04N7/14Systems for two-way working
    • H04N7/141Systems 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

Adjust the method and device of video coding rate
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.
CN201610203766.9A 2016-04-01 2016-04-01 Adjust the method and device of video coding rate Withdrawn CN107294923A (en)

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