WO2014134811A1 - 用于分配带宽的方法和视频网关 - Google Patents

用于分配带宽的方法和视频网关 Download PDF

Info

Publication number
WO2014134811A1
WO2014134811A1 PCT/CN2013/072303 CN2013072303W WO2014134811A1 WO 2014134811 A1 WO2014134811 A1 WO 2014134811A1 CN 2013072303 W CN2013072303 W CN 2013072303W WO 2014134811 A1 WO2014134811 A1 WO 2014134811A1
Authority
WO
WIPO (PCT)
Prior art keywords
video
segment
transmission bandwidth
information
video clip
Prior art date
Application number
PCT/CN2013/072303
Other languages
English (en)
French (fr)
Inventor
韩广林
池琛
Original Assignee
华为技术有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2013/072303 priority Critical patent/WO2014134811A1/zh
Priority to CN201380003998.4A priority patent/CN104170315B/zh
Publication of WO2014134811A1 publication Critical patent/WO2014134811A1/zh

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00Traffic control in data switching networks
    • H04L47/70Admission control; Resource allocation
    • H04L47/72Admission control; Resource allocation using reservation actions during connection setup
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00Traffic control in data switching networks
    • H04L47/70Admission control; Resource allocation
    • H04L47/80Actions related to the user profile or the type of traffic
    • H04L47/801Real time traffic
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00Traffic control in data switching networks
    • H04L47/70Admission control; Resource allocation
    • H04L47/80Actions related to the user profile or the type of traffic
    • H04L47/803Application aware
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/25Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
    • H04N21/262Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists
    • H04N21/26258Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists for generating a list of items to be played back in a given order, e.g. playlist, or scheduling item distribution according to such list
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/433Content storage operation, e.g. storage operation in response to a pause request, caching operations
    • H04N21/4331Caching operations, e.g. of an advertisement for later insertion during playback
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/63Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
    • H04N21/637Control signals issued by the client directed to the server or network components
    • H04N21/6373Control signals issued by the client directed to the server or network components for rate control, e.g. request to the server to modify its transmission rate

Definitions

  • the present invention relates to the field of communications, and in particular to a method and a video gateway for allocating bandwidth in the field of communications. Background technique
  • VBR variable Bit Rate
  • CBR video coding technology is mainly used in streaming media playback solutions.
  • the bit rate remains substantially constant during the progress of the video stream, typically close to the target bit rate and is always within the time window determined by the buffer size.
  • the disadvantage of CBR video coding technology is that the quality of the encoded content is unstable. This is because when some segments of the video content are highly moved, it is more difficult to compress than other segments, so the quality of these video segments compressed by CBR video coding technology is It is worse.
  • CBR video coding techniques can result in different quality of adjacent video streams, and typically at lower bit rates, quality changes become more pronounced.
  • VBR video coding technology is mainly used in video content downloading, video local playback and other schemes. Some streaming media playback schemes can also adopt peak VBR video coding technology.
  • VBR video coding technology is advantageous when the coded content is mixed with single data and complex data (for example, video that switches between fast motion and slow motion).
  • the system automatically allocates fewer bits for the single part of the content, leaving a sufficient amount of bits to generate high quality complex parts.
  • the output of VBR encoding is much better than the output of CBR encoding under the same file size.
  • the VBR encoded file with the same quality as the CBR encoded file may have half the size of the CBR encoded file. In other words, when encoding with the same average code rate, the video quality obtained by VBR video coding technology will be better than that obtained by CBR video coding technology.
  • VBR video coding technology for streaming media.
  • the code rate varies greatly, and can usually vary from 1 times the average bit rate to 4 or 5 times the average bit rate. Therefore, when using fixed bandwidth transmission, more buffering will occur during playback, causing video playback to pause, which seriously affects the user's QoE.
  • a common method in the industry is to set a bandwidth of 1.1 times to 1.2 times the average bit rate for streaming video, thereby controlling the number of times of video buffering.
  • This method is effective for video content changes (such as news broadcast programs) and streaming media using CBR video encoding, but for ordinary video content and movies using VBR video encoding, the video stream rate is often The sudden increase in the part causes a pause that affects the user's video experience. If you set an excessive bandwidth, such as setting a bandwidth of 2 times the average bit rate, the ability to access users may be degraded.
  • Another way to solve the pause problem during video playback is to buffer more data before playing, or to perform Fast Filling at the beginning of playback to smooth the code in the video playback by playing the buffer.
  • Rate change section This method has the following disadvantages: First, a large initial buffer is needed, which brings cost increase for mobile devices. Secondly, initial buffering of more data means that the waiting time for playing increases, which also affects the user. QoE; Again, because the user has the possibility to change the program after watching for a few minutes or even less, the initial buffering of more data and fast padding technology will result in wasted bandwidth.
  • the third method is to adjust the bandwidth in real time according to the change of the video bit rate to ensure that the video does not have a serious pause; or adjust the video bit rate in real time according to the change of the bandwidth, for example, dynamic adaptive streaming transmission based on the HTTP protocol (Dynamic Adaptive Streaming over HTTP, the tube is called "DASH" technology.
  • dynamic adaptive streaming transmission based on the HTTP protocol Dynamic Adaptive Streaming over HTTP, the tube is called "DASH" technology.
  • real-time adjustment of bandwidth will face resource limitation.
  • the bandwidth can be reduced but cannot be increased, which will affect the adjustment effect. Adjusting the bit rate technology such as DASH will affect the picture quality of the video and reduce the QoE of the user. .
  • the present invention provides a method and video gateway for allocating bandwidth, which can improve the user experience while saving network bandwidth.
  • a method for allocating bandwidth comprising: acquiring data information of a video segment, where the data information of the video segment includes a video segment size and a video segment during playback Determining the quality of experience QoE demand information of the user equipment requesting to play the video clip; determining the transmission bandwidth required for transmitting the video clip according to the data information of the video clip and the quality of experience requirement information.
  • the quality of experience requirement information includes at least one of the following information: initial cache time before video playback, re-cache time allowed in video playback, The number of re-caches allowed in video playback and the re-buffer frequency allowed in video playback.
  • determining the transmission bandwidth required for transmitting the video segment comprises: dividing the video segment into at least two video sub-segments; determining the at least two Data information of each of the video sub-segments; according to the data information of each video sub-segment and the initial buffer time before the video is played, or according to the data information of each video sub-segment, before the video is played Initial buffer time and re-buffer time allowed in video playback, determining a transmission bandwidth required for transmitting each video sub-segment; determining a maximum value of transmission bandwidth required for transmitting each video sub-segment as transmitting the video segment The required transmission bandwidth.
  • the acquiring data information of the video segment includes: a packet data network PDN Acquiring the video segment; obtaining data information of the video segment according to the video segment; or acquiring data information of the video segment from the PDN.
  • the determining requesting the QoE requirement information of the user equipment that plays the video segment includes: determining QoE demand information of the user equipment according to the subscription information and/or service level information of the user equipment.
  • the method further includes: The base station sends a service bandwidth request message, where the service bandwidth request message includes a transmission bandwidth required for transmitting the video segment, and receives a service bandwidth allocation completion message sent by the base station when determining a transmission bandwidth required for transmitting the video segment.
  • the service bandwidth request message is a bearer setup request message, where the service bandwidth allocation complete message is a bearer setup complete message; Or the service bandwidth request message is a bearer modification request message, and the service bandwidth allocation completion message is a bearer modification completion message.
  • the method further includes: The base station sends a service bandwidth request message, where the service bandwidth request message includes a transmission bandwidth required by each of the at least two video segments requested by the user equipment, and a trigger time of the transmission bandwidth required for each video segment. And so that the base station determines, according to the trigger time information, whether to allocate a transmission bandwidth required for transmitting each video segment.
  • the method further includes: Transmitting the transmission bandwidth required for the video segment, generating or updating the multimedia presentation description MPD file; and transmitting the generated or updated MPD file to the user equipment.
  • a video gateway configured to: an acquiring module, configured to acquire data information of a video segment, where the data information of the video segment includes a video segment size and a video segment playing time; Determining the quality of the QoE demand information of the user equipment that is requested to play the video segment; the second determining module, configured to: according to the data information of the video segment acquired by the acquiring module, and the quality of experience requirement information determined by the first determining module, Determine the transmission bandwidth required to transmit the video clip.
  • the quality of experience requirement information determined by the first determining module includes at least one of the following information: initial cache time before video playback, video playback The allowed re-cache time, the number of re-caches allowed in video playback, and the re-cache frequency allowed in video playback.
  • the second determining module includes: a dividing unit, configured to divide the video segment into at least two video sub-segments; Determining data information of each of the at least two video sub-segments divided by the dividing unit; a second determining unit, configured to determine, according to the first determining unit, data information of each video sub-segment and The initial buffer time before the video is played, or according to the data information of the video sub-segment determined by the first determining unit, the initial buffer time before the video playing, and the re-buffer time allowed in the video playing, determining to transmit each video.
  • a third determining unit configured to determine, as the transmission bandwidth required for transmitting the video segment, a maximum value of a transmission bandwidth required for transmitting the video sub-segment determined by the second determining unit .
  • the acquiring module includes: a first acquiring unit, configured to The group data network PDN obtains the video segment; the second obtaining unit is configured to obtain the data information of the video segment according to the video segment acquired by the first acquiring unit, or the third acquiring unit, configured to acquire the video from the PDN The data information of the fragment.
  • the first determining module is specifically configured to: sign the subscription according to the user equipment Information and/or service level information, determining QoE demand information of the user equipment.
  • the video gateway further includes: a first sending module, configured to send a service bandwidth request message to the base station, where the service bandwidth request message includes a transmission bandwidth required for transmitting the video segment, and a receiving module, configured to receive, by the base station, a transmission required to determine to allocate and transmit the video segment The service bandwidth allocation completion message sent when bandwidth is sent.
  • the service bandwidth request message sent by the first sending module is a bearer setup request message
  • the receiving module receives
  • the service bandwidth allocation completion message is a bearer setup complete message
  • the service bandwidth request message sent by the first sending module is a bearer modification request message
  • the service bandwidth allocation complete message received by the receiving module is a bearer modification complete message.
  • the video gateway further includes: a second sending module, configured to send a service bandwidth request message to the base station, where the service bandwidth request message includes a transmission bandwidth required by each of the at least two video segments that the user equipment requests to transmit, and each video segment The trigger time information of the required transmission bandwidth, so that the base station determines whether to allocate the transmission bandwidth required for transmitting each video segment according to the trigger time information.
  • a second sending module configured to send a service bandwidth request message to the base station, where the service bandwidth request message includes a transmission bandwidth required by each of the at least two video segments that the user equipment requests to transmit, and each video segment The trigger time information of the required transmission bandwidth, so that the base station determines whether to allocate the transmission bandwidth required for transmitting each video segment according to the trigger time information.
  • the video gateway further includes: And a processing module, configured to generate or update a multimedia representation description MPD file according to a transmission bandwidth required for transmitting the video segment; and a third sending module, configured to send the MPD file generated or updated by the processing module to the user equipment.
  • the method for allocating bandwidth and the video gateway in the embodiment of the present invention can determine the transmission bandwidth required for transmitting the video segment according to the data information of the video segment and the experience quality requirement information of the user equipment, thereby being able to determine the transmission bandwidth required for transmitting the video segment.
  • Control the slowdown of video clips during playback The probability of storage and/or re-cache time can improve the user experience, and can save the bandwidth of the network at the same time, increase the number of user accesses in the cell, and avoid unnecessary waste of bandwidth.
  • FIG. 1 is a schematic flow chart of a method for allocating bandwidth according to an embodiment of the present invention.
  • FIG. 2 is a schematic flowchart of a method for acquiring data information according to an embodiment of the present invention.
  • FIG. 3 is a schematic flowchart of a method of determining a transmission bandwidth according to an embodiment of the present invention.
  • FIG. 4 is another schematic flowchart of a method for allocating bandwidth according to an embodiment of the present invention.
  • FIG. 5 is still another schematic flowchart of a method for allocating bandwidth according to an embodiment of the present invention.
  • FIG. 6 is a schematic flowchart of a method for allocating bandwidth according to another embodiment of the present invention.
  • 7 is a schematic block diagram of a video gateway in accordance with an embodiment of the present invention.
  • FIG. 8 is a schematic block diagram of a second determining module according to an embodiment of the present invention.
  • FIG. 9 is a schematic block diagram of an acquisition module in accordance with an embodiment of the present invention.
  • FIG. 10 is another schematic block diagram of a video gateway according to an embodiment of the present invention.
  • FIG. 11 is still another schematic block diagram of a video gateway according to an embodiment of the present invention.
  • FIG. 12 is still another schematic block diagram of a video gateway according to an embodiment of the present invention.
  • FIG. 13 is still another schematic block diagram of a video gateway according to an embodiment of the present invention.
  • FIG. 14 is a schematic block diagram of a video gateway according to another embodiment of the present invention. detailed description
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • WCDMA wideband code Wideband Code Division Multiple Access
  • General Packet Radio Service General Packet Radio Service
  • LTE frequency division duplex Frequency Division Duplex, "LDD”
  • LTE time division duplex Time Division Duplex, "TDD”
  • Universal Mobile Telecommunication System Universal Mobile Telecommunication System
  • UMTS Universal Mobile Telecommunication System
  • FIG. 1 shows a schematic flow diagram of a method 100 for allocating bandwidth, which may be performed by a management device, such as a video gateway or video server, in accordance with an embodiment of the present invention.
  • the method 100 includes:
  • S120 Determine, according to the data information of the video segment and the quality of experience requirement information, determine a transmission bandwidth required for transmitting the video segment, and determine an experience quality QoE requirement information of the user equipment that requests the video segment to play.
  • a management device such as a video gateway may acquire data information of a video segment and determine QoE demand information of the user equipment, and the video gateway may The data information of the video segment and the quality of experience requirement information determine the transmission bandwidth required for transmitting the video segment, thereby avoiding waste of bandwidth and controlling the re-caching probability and/or re-buffering time during playback, thereby improving User experience during video playback.
  • the method for allocating bandwidth according to the embodiment of the present invention can determine the transmission bandwidth required for transmitting the video segment according to the data information of the video segment and the experience quality requirement information of the user equipment, thereby being able to control the video segment during the playing process.
  • the re-caching probability and/or re-buffering time improves the user experience, and can simultaneously save the bandwidth of the network, increase the number of user accesses of the cell, and avoid unnecessary waste of bandwidth.
  • the video segment may be a segment of any size or any length of playback.
  • the video clip may be a video frame, or a group of pictures ("GOP"), and may be the entire video to be played, but the embodiment of the present invention is not limited thereto, for example, The video clip can also be a video of other size or playback length.
  • the video gateway can obtain the data information of the video segment in various ways, which will be described below in conjunction with FIG. 2.
  • a method 110 for acquiring data information includes:
  • the video segment may be obtained from a packet data network (Packet Data Network, called "PDN").
  • PDN Packet Data Network
  • the video segment may be obtained from a service service device in the packet data network.
  • the video gateway may first obtain the video segment, and then obtain corresponding data information according to the video segment; of course, the video gateway may also directly obtain the data information of the video segment from the PDN; in addition, the video gateway may also obtain the playing time and corresponding of the video segment. The correspondence of the amount of data that needs to be transmitted.
  • the data information of the video segment may include a video segment size and a video segment playing time, where the video segment size may include the size of the entire video segment, and may also include the size of each video frame in the video segment.
  • the video clip playing time may also include the playing time of the entire video clip, and may also include the playing time of each video frame in the video clip, and may also include The playing time of each video sub-segment in the video clip is not limited to this embodiment of the present invention.
  • the video gateway may determine the quality of experience requirement information of the user equipment that requests the video segment to be played.
  • the video gateway determines the QoE requirement information of the user equipment according to the subscription information and/or the service level information of the user equipment. .
  • the QoE requirement information of the user equipment may include the degree of fluency in video playback, the degree of caching, and the like.
  • the quality of experience requirement information includes at least one of the following information: an initial cache time before the video is played, a re-cache time allowed in the video play, a number of re-caches allowed in the video play, and a re-cache allowed in the video play. frequency.
  • the initial cache time before the video is played may indicate the length of the video playback time that the initial cache data can support before the video is played.
  • the initial cache time TO may refer to the length of time that the client or user equipment needs to be cached after the video clip is requested. It is the video content of T0 to start playing; for example, it needs to buffer 10s of video content in advance to start playing. Slow down
  • the storage time, the number of times of re-buffering, and the frequency of re-buffering are all used to measure the smoothness of the video clip during playback.
  • the re-buffer time can indicate the time during which the video stops playing or the user waits for playback during re-cache, and then caches.
  • the number of times and the frequency of the re-buffering may have a corresponding relationship with the re-buffering time, that is, the re-buffering time may be determined according to the number of times of re-buffering or the frequency of re-buffering, for example, the correspondence relationship is a function relationship or a mapping relationship.
  • the subscription information of the user equipment may include, for example, an initial cache time agreed with the operator, a re-cache time allowed in the video play, or a minimum transmission bandwidth, etc.
  • the service level information of the user equipment may include, for example, video playback.
  • the fluency level for example, can be divided into very smooth, smooth, generally smooth, not smooth, etc., wherein the fluency level can correspond to the cache time.
  • the subscription information and/or service level information of the user equipment may also include other information reflecting the QoE requirements, and embodiments of the present invention are not limited thereto.
  • the video gateway may determine a transmission bandwidth required for transmitting the video segment according to the data information of the video segment and the quality of experience requirement information.
  • the video gateway may determine, according to the data information of the video segment and the experience quality requirement information, a minimum bandwidth required for smoothly playing the video segment, and use the minimum bandwidth as a transmission required to transmit the video segment.
  • the bandwidth can be used to control the re-caching probability and/or re-cache time of the video clip during playback while saving network bandwidth, thereby improving the user experience.
  • a method 130 for determining a transmission bandwidth required for transmitting the video segment includes:
  • the video segment is divided into at least two video sub-segments
  • the video gateway may divide the video segment into at least two video sub-segments of any size or any play length, and the size or the play length of each video sub-segment may be the same or different, and the embodiment of the present invention does not Limited to this.
  • the frequency segment is divided, that is, the video sub-segment is a video frame included in the video segment requested by the user to play.
  • each video sub-segment satisfies, for example, the following equation (1) or (2):
  • ⁇ / represents the transmission bandwidth required for the nth video sub-segment; is the size of the i-th video sub-segment; 7: is the playback time from the first video sub-segment to the end of the n-th video sub-segment ; ⁇ ⁇ is the initial cache time before the video is played; 7; 6!# is the re-cache time allowed in the video playback.
  • the transmission bandwidth required to transmit each video sub-segment may be determined by the size of the video sub-segment and the actual viewing time of the video sub-segment.
  • the ratio of the video sub-segment may be the sum of the playing time of the video sub-segment and the initial buffering time, or the sum of the playing time, the initial buffering time, and the re-buffering time of the video sub-segment. The embodiment is not limited to this.
  • the video gateway may determine the maximum value of the transmission bandwidth required to transmit the video sub-segment as the transmission bandwidth required for transmitting the video segment, for example, the transmission bandwidth required for transmitting the video segment.
  • fir represents the transmission bandwidth required for transmitting the video segment
  • N represents the number of video sub-segments. Therefore, the method for allocating bandwidth according to the embodiment of the present invention, by using the data information of the video segment and the experience quality requirement information of the user equipment
  • the transmission bandwidth required for transmitting the video segment can be determined, thereby controlling the re-caching probability and/or re-buffering time of the video segment during playback, improving the user experience, and simultaneously saving the bandwidth of the network and improving the user of the cell. Access the number to avoid unnecessary bandwidth waste.
  • the method 100 for allocating bandwidth according to an embodiment of the present invention further includes:
  • S140 Send a service bandwidth request message to the base station, where the service bandwidth request message includes a transmission bandwidth required for transmitting the video segment.
  • the video gateway may send a service bandwidth request to the base station to request the base station to allocate the determined transmission bandwidth required for transmitting the video segment; after receiving the service bandwidth request, the base station may be based on the current load status and the requested The transmission bandwidth determines whether the transmission bandwidth required for transmitting the video segment can be allocated; if the base station determines that the transmission bandwidth can be allocated, the base station can send a service bandwidth allocation complete message to the video gateway to confirm the completion of the allocation of the transmission bandwidth.
  • the service bandwidth request message is a bearer setup request message, and the service bandwidth allocation complete message is a bearer setup complete message; or the service bandwidth request message is a bearer modification request message, the service bandwidth allocation The completion message is the bearer modification completion message.
  • the bandwidth allocated by the video gateway to the base station may also be other bandwidth determined based on the transmission bandwidth, that is, the service bandwidth request message may include other bandwidth determined based on the transmission bandwidth; It is understood that the service bandwidth request message may be used to request to modify the network bearer, and may also be used to modify the service data stream, but the embodiment of the present invention is not limited thereto.
  • the video gateway may divide the video to be played into at least two video segments, and determine respectively the transmission bandwidth required for transmitting each video segment, to dynamically adjust the transmission bandwidth required for transmitting each video segment.
  • the video gateway may separately request the allocated bandwidth of each video segment from the base station, or may request the allocated bandwidth of multiple video segments at a time to reduce the signaling overhead, thereby further improving the user experience.
  • the method 100 further includes:
  • S160 Send a service bandwidth request message to the base station, where the service bandwidth request message includes a transmission bandwidth required by each video segment of the at least two video segments requested by the user equipment, and a transmission bandwidth required for each video segment. Triggering time information, so that the base station determines whether to allocate the transmission bandwidth required for transmitting each video segment according to the trigger time information.
  • the base station may determine whether to allocate the transmission bandwidth required for transmitting the video segment according to the trigger time information of the transmission bandwidth required for each video segment, thereby dynamically allocating bandwidth. Resources to improve the efficiency of the use of system resources, Save system overhead to further enhance the user experience.
  • the trigger time information is used to indicate an activation time of a transmission bandwidth required for each video segment; optionally, the trigger time information includes an effective time of a transmission bandwidth required for each video segment and/or Or the length of time.
  • the service bandwidth request message may also include only the transmission bandwidth required to transmit a portion of the video segment, but embodiments of the present invention are not limited thereto.
  • the request message may include an effective time or an effective time of the transmission bandwidth of the video segment, such as: an absolute time expressed in year, month, day, hour, minute, and second, or Relative time expressed in years, months, hours, minutes and seconds;
  • the request message may also include the effective time length or the effective time length of the transmission bandwidth of the video segment, for example, the length of time represented by the year, month, day, hour, minute, and second; for example: when the base station receives multiple bandwidths and corresponding valid time length requests Afterwards, the first transmission bandwidth is enabled and the guaranteed transmission is provided. When the effective time length expires, the next transmission bandwidth is enabled and the guaranteed transmission is provided;
  • the service bandwidth request message may only carry specific video transmission bandwidth data for one or more video segments, and no specific video transmission bandwidth value for other video segments; for example: a transmission bandwidth may be set and The effective time of the bandwidth, when the effective time of the bandwidth expires, the guaranteed transmission bandwidth is no longer provided for the video, and the video is transmitted by using the non-guaranteed transmission mode; of course, the method of specifying the absolute time may also be adopted, but Embodiments of the invention are not limited thereto.
  • the method for allocating bandwidth according to the embodiment of the present invention can determine the transmission bandwidth required for transmitting the video segment according to the data information of the video segment and the experience quality requirement information of the user equipment, thereby being able to control the video segment during the playing process.
  • the re-caching probability and/or re-buffering time improves the user experience, and can simultaneously save the bandwidth of the network, increase the number of user accesses of the cell, and avoid unnecessary waste of bandwidth.
  • the method 100 further includes:
  • the client needs to first obtain an MPD file for playing a video segment, and the video gateway can directly generate the MPD file required by the client after acquiring the data information of the video segment.
  • the bandwidth information included in the MPD file may be determined according to the method according to the embodiment of the present invention; the video gateway may also intercept and transmit the same.
  • the MPD file, and the bandwidth information is updated according to the transmission bandwidth required to transmit the video segment. Therefore, when the client requests a DASH multimedia presentation description (media called "MPD") file through the video gateway, the video gateway can modify or regenerate the MPD file according to the transmission bandwidth required for transmitting the video segment. And sending the MPD file to the client, where the MPD file may include, for example, initial buffer time, transmission bandwidth required for transmitting the video segment, and the like.
  • the method for allocating bandwidth according to the embodiment of the present invention can determine the transmission bandwidth required for transmitting the video segment according to the data information of the video segment and the experience quality requirement information of the user equipment, thereby being able to control the video segment during the playing process.
  • the re-caching probability and/or re-buffering time improves the user experience, and can simultaneously save the bandwidth of the network, increase the number of user accesses of the cell, and avoid unnecessary waste of bandwidth.
  • a method 200 for allocating bandwidth according to an embodiment of the present invention will be described in detail below with reference to the flowchart shown in FIG. 6.
  • the video gateway VGW acquires data information of the video segment from the PDN.
  • the video gateway may first obtain the video segment from the PDN, and obtain data information of the video segment according to the video segment; or the video gateway may also obtain the video segment directly from the PDN.
  • the embodiment is not limited thereto.
  • the video gateway may determine the transmission bandwidth required for transmitting the video segment according to the data information of the video segment and the quality of experience QoE requirement information of the user equipment that requests the video segment.
  • the video gateway sends a service bandwidth request to the base station eNB, where the service bandwidth request may be a bearer setup request, or a bearer modification request, where the service bandwidth request includes the lowest QoE requirement that meets the user equipment determined in S202.
  • Bandwidth information When the video gateway requests the transmission bandwidth of multiple video segments at a time, the service bandwidth request may further include trigger time information of the transmission bandwidth required for each video segment, so that the base station determines respectively according to the trigger time information. Determine whether to allocate the transmission bandwidth required to transmit this video clip.
  • the base station may determine, according to the current load status and the requested transmission bandwidth, whether the service request can be accepted; if the base station can allocate the requested transmission bandwidth for the service, the base station accepts The business request.
  • the base station may send a radio bearer setup message or a radio bearer modification message to the user equipment to establish or modify the radio bearer.
  • the base station may also send a radio resource control connection reconfiguration message to the user equipment, etc.
  • Embodiments of the invention are not limited thereto.
  • the user equipment may feed back a radio bearer setup message, or a radio bearer modification complete message, or a radio resource control connection reconfiguration complete message.
  • the base station feeds back a service bandwidth allocation complete message to the video gateway, and the message may be a 7-carrier establishment completion message or a 7-load tamper completion message.
  • the video gateway acquires the video data from the packet data network, and the video gateway sends the video data to the user equipment through the established service transmission bearer.
  • the size of the sequence numbers of the above processes does not mean the order of execution, and the order of execution of each process should be determined by its function and internal logic, and should not be taken to the embodiments of the present invention.
  • the implementation process constitutes any limitation.
  • the method for allocating bandwidth according to the embodiment of the present invention can determine the transmission bandwidth required for transmitting the video segment according to the data information of the video segment and the experience quality requirement information of the user equipment, thereby being able to control the video segment during the playing process.
  • the re-caching probability and/or re-buffering time improves the user experience, and can simultaneously save the bandwidth of the network, increase the number of user accesses of the cell, and avoid unnecessary waste of bandwidth.
  • a video gateway 500 includes:
  • the MM block 510 is configured to acquire data information of the video segment, where the data information of the video segment includes a video segment size and a video segment playing time;
  • a first determining module 520 configured to determine an experience quality QoE requirement information of a user equipment that requests to play the video segment
  • a second determining module 530 configured to acquire data of the video segment according to the acquiring module 510
  • the information and the quality of experience requirement information determined by the first determining module 520 determine a transmission bandwidth required to transmit the video segment.
  • the video gateway of the embodiment of the present invention can determine the transmission bandwidth required for transmitting the video segment according to the data information of the video segment and the experience quality requirement information of the user equipment, thereby being able to control the re-buffering of the video segment during playback.
  • the probability and/or re-cache time can improve the user experience, and can save the bandwidth of the network at the same time, increase the number of user accesses in the cell, and avoid unnecessary waste of bandwidth.
  • the body 3 quality requirement information determined by the first determining module 520 includes at least one of the following information: an initial cache time before the video is played, and a re-cache time allowed in the video play. The number of re-encryptions allowed in video playback and the re-cache frequency allowed in video playback.
  • the second determining module 530 includes: a dividing unit 531, configured to divide the video segment into at least two video sub-segments; a first determining unit 532, Determining data information of each of the at least two video sub-segments divided by the dividing unit 531;
  • the second determining unit 533 is configured to: according to the data information of each video sub-segment determined by the first determining unit 532 and an initial buffer time before the video is played, or the video element determined according to the first determining unit 532 The data information of the segment, the initial buffer time before the video is played, and the re-buffer time allowed in the video playback, determining the transmission bandwidth required to transmit the video sub-segment;
  • the third determining unit 534 is configured to determine a maximum value of the transmission bandwidth required for transmitting the video sub-segment determined by the second determining unit 533 as a transmission bandwidth required for transmitting the video segment.
  • the acquiring module 510 includes: a first acquiring unit 511, configured to acquire the video segment from the packet data network PDN; and a second obtaining unit 512, configured to The video segment acquired by the first obtaining unit 511 acquires data information of the video segment.
  • the obtaining module 510 includes: a third obtaining unit 513, configured to acquire data information of the video segment from the PDN.
  • the first determining module 520 is specifically configured to: determine QoE requirement information of the user equipment according to the subscription information and/or service level information of the user equipment.
  • the video gateway 500 further includes:
  • the first sending module 540 is configured to send a service bandwidth request message to the base station, where the service bandwidth request message includes a transmission bandwidth required for transmitting the video segment;
  • the receiving module 550 is configured to receive a service bandwidth allocation complete message sent by the base station when determining a transmission bandwidth required for transmitting the video segment.
  • the service bandwidth request message sent by the first sending module 540 is a bearer setup request message, and the service bandwidth allocation complete message received by the receiving module 550 is a bearer setup complete message;
  • the service bandwidth request message sent by the first sending module 540 is a bearer modification request message, and the service bandwidth allocation completion message received by the receiving module 550 is a bearer tampering completion message.
  • the video gateway 500 further includes: a second sending module 560, configured to send a service bandwidth request message to the base station, where the service bandwidth request message includes the user equipment request The transmission bandwidth required for each of the at least two video segments transmitted, and the trigger time information of the transmission bandwidth required for each video segment, so that the base station determines whether to allocate the transmission according to the trigger time information, respectively.
  • the required transmission bandwidth for each video clip is not limited to:
  • the video gateway 500 further includes: a processing module 570, configured to generate or update a multimedia representation description MPD file according to a transmission bandwidth required for transmitting the video segment;
  • the third sending module 580 is configured to send the MPD file generated or updated by the processing module 570 to the user equipment.
  • the video gateway of the embodiment of the present invention can determine the transmission bandwidth required for transmitting the video segment according to the data information of the video segment and the experience quality requirement information of the user equipment, thereby being able to control the re-buffering of the video segment during playback.
  • the probability and/or re-cache time can improve the user experience, and can save the bandwidth of the network at the same time, increase the number of user accesses in the cell, and avoid unnecessary waste of bandwidth.
  • system and “network” are often used interchangeably herein.
  • the term “and/or,” in this context is merely an association describing the associated object, indicating that there can be three relationships, for example, ⁇ and / or ⁇ , which can mean: A exists separately, and both A and B exist, alone There are three cases of B.
  • the character ",” in this paper, indicates that the contextual object is an "or" relationship.
  • B corresponding to A means that B is associated with A, the root According to A, B can be determined.
  • determining B according to A does not mean that B is determined only on the basis of A, but also based on A and/or other information.
  • an embodiment of the present invention further provides a video gateway 700, which includes a processor 710, a memory 720, and a bus system 730.
  • the processor 710 and the memory 720 are connected by a bus system 730 for storing instructions, and the processor 710 is configured to execute instructions stored by the memory 720.
  • the processor 710 is configured to: acquire data information of a video segment, where the data information of the video segment includes a video segment size and a video segment playing time; and determine an experience quality QoE requirement information of the user equipment that requests the video segment to be played; The data information of the video clip and the quality of experience requirement information determine the transmission bandwidth required to transmit the video clip.
  • the video gateway of the embodiment of the present invention can determine the transmission bandwidth required for transmitting the video segment according to the data information of the video segment and the experience quality requirement information of the user equipment, thereby being able to control the re-buffering of the video segment during playback.
  • the probability and/or re-cache time can improve the user experience, and can save the bandwidth of the network at the same time, increase the number of user accesses in the cell, and avoid unnecessary waste of bandwidth.
  • the processor 710 may be a central processing unit (a central processing unit (CPU), and the processor 710 may also be another general-purpose processor, a digital signal processor (DSP). ), application specific integrated circuits (ASICs), off-the-shelf programmable gate arrays (FPGAs) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, and the like.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the memory 720 can include read only memory and random access memory and provides instructions and data to the processor 710. A portion of memory 720 may also include non-volatile random access memory. For example, the memory 720 can also store information of the device type.
  • the bus system 730 can include, in addition to the data bus, a power bus, a control bus, and a status signal bus. However, for clarity of description, various buses are labeled as bus system 730 in the figure.
  • each step of the foregoing method may be completed by an integrated logic circuit of hardware in the processor 710 or an instruction in a form of software.
  • the steps of the method disclosed in the embodiments of the present invention may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor.
  • the software modules can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory 720.
  • the processor 710 reads the information in the memory 720 and completes the steps of the above method in combination with hardware. To avoid repetition, it will not be described in detail here.
  • the body 3 quality requirement information determined by the processor 710 includes at least one of the following information: an initial cache time before the video is played, a re-cache time allowed in the video play, and a video play permission.
  • the processor 710 determines a transmission bandwidth required for transmitting the video segment, including: dividing the video segment into at least two video sub-segments; determining each of the at least two video sub-segments Data information of the video sub-segment; according to the data information of the video sub-segment and the initial buffer time before the video is played, or according to the data information of the video sub-segment, the initial buffer time before the video is played, and the video playing The allowed re-buffer time determines the transmission bandwidth required to transmit the video sub-segment; the maximum of the transmission bandwidth required to transmit the video sub-segment is determined as the transmission bandwidth required to transmit the video segment.
  • the acquiring, by the processor 710, the data information of the video segment includes: acquiring the video segment from the packet data network PDN; acquiring data information of the video segment according to the video segment; or acquiring from the PDN The data information of the video clip.
  • the determining, by the processor 710, the QoE requirement information of the user equipment that requests the video segment to be played includes: determining, according to the subscription information and/or service level information of the user equipment, the QoE requirement of the user equipment. information.
  • the video gateway 700 further includes receiving
  • the transmitter 750 is configured to send a service bandwidth request message to the base station, where the service bandwidth request message includes a transmission bandwidth required for transmitting the video segment; the receiver 740 is configured to receive the base station in determining the allocation.
  • the service bandwidth allocation complete message sent when the transmission bandwidth required for the video segment is transmitted.
  • the service bandwidth request message is a bearer setup request message, where the service bandwidth allocation complete message is a bearer setup complete message; or the service bandwidth request message is a bearer modification request message, the service bandwidth allocation complete message The bearer modification completion message is carried.
  • the transmitter 750 is further configured to send, to the base station, a service bandwidth request message, where the service bandwidth request message includes, required by each of the at least two video segments that the user equipment requests to transmit. Transmission bandwidth, and trigger time information of the transmission bandwidth required for each video segment, so that the base station determines whether to allocate the transmission according to the trigger time information, respectively. The required transmission bandwidth for each video clip.
  • the processor 710 is further configured to generate or update a multimedia representation description MPD file according to a transmission bandwidth required for transmitting the video segment; the transmitter 750 is further configured to: generate or update the MPD.
  • the file is sent to the user device.
  • the video gateway of the embodiment of the present invention can determine the transmission bandwidth required for transmitting the video segment according to the data information of the video segment and the experience quality requirement information of the user equipment, thereby being able to control the re-buffering of the video segment during playback.
  • the probability and/or re-cache time can improve the user experience, and can save the bandwidth of the network at the same time, increase the number of user accesses in the cell, and avoid unnecessary waste of bandwidth.
  • the disclosed systems, devices, and methods may be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, or an electrical, mechanical or other form of connection.
  • the components displayed for the unit may or may not be physical units, ie may be located in one place, or may be distributed over multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the embodiments of the present invention.
  • each functional unit in various embodiments of the present invention may be integrated into one processing unit
  • each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
  • the technical solution of the present invention contributes in essence or to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium.
  • a number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a removable hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like, which can store program codes. .

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • Databases & Information Systems (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

本发明公开了一种用于分配带宽的方法和视频网关。该方法包括:获取视频片段的数据信息,该视频片段的数据信息包括视频片段大小和视频片段播放时间;确定请求播放该视频片段的用户设备的体验质量需求信息;根据该视频片段的数据信息和该体验质量需求信息,确定传输该视频片段所需的传输带宽。本发明实施例的用于分配带宽的方法和视频网关,通过根据视频片段的数据信息和用户设备的体验质量需求信息,能够确定传输该视频片段所需的传输带宽,从而能够控制视频片段在播放过程中的再缓存概率和/或再缓存时间,提高用户的体验,并能够同时节省网络的带宽,提高小区的用户接入数,避免不必要的带宽浪费。

Description

用于分配带宽的方法和视频网关 技术领域
本发明涉及通信领域, 尤其涉及通信领域中用于分配带宽的方法和视频 网关。 背景技术
根据视频编码码率的特点, 当前的视频编码技术可以分为两类: 固定码 率( Constant Bit Rate, 筒称为 "CBR" )视频编码技术和可变码率(Variable Bit Rate, 筒称为 "VBR" )视频编码技术。
CBR视频编码技术主要应用于流媒体播放方案中。 使用 CBR视频编码 技术时, 比特率在视频流的进行过程中基本保持恒定, 通常接近目标比特率 并且始终处于由緩沖区大小确定的时间窗内。 CBR视频编码技术的缺点在于 编码内容的质量不稳定, 这是由于当视频内容的某些片段运动程度较高时, 要比其他片段更难压缩, 所以用 CBR视频编码技术压缩的这些视频片段质 量就较差。 此外, CBR视频编码技术会导致相邻视频流的质量不同, 通常在 较低比特率下, 质量的变化会更加明显。
VBR视频编码技术主要应用于视频内容下载、 视频本地播放等方案中, 一些流媒体播放方案中也可以采用峰值 VBR视频编码技术。 当编码内容中 混有筒单数据和复杂数据(例如,在快动作和慢动作间切换的视频)时, VBR 视频编码技术很有优势。 使用 VBR视频编码技术时, 系统将自动为内容的 筒单部分分配较少的比特, 从而留出足量的比特用于生成高质量的复杂部 分。对混合内容使用 VBR视频编码技术时,在文件大小相同的条件下, VBR 编码的输出结果要比 CBR编码的输出结果质量要好得多。 在一些情况下, 与 CBR编码文件质量相同的 VBR编码文件, VBR编码文件大小可能只有 CBR编码文件的一半。换言之,采用相同的平均码率进行编码时,采用 VBR 视频编码技术得到的视频质量将好于采用 CBR视频编码技术得到的视频质 量。
考虑到 VBR视频编码的效率和对用户设备的体验质量 (Quality of Experience, 筒称为 "QoE" ) 的影响, 未来的移动视频点播业务的趋势将是 采用 VBR视频编码技术。但 VBR视频编码技术用于流媒体的缺点是视频流 码率变化较大, 通常可以从 1倍平均码率变化到 4、 5倍平均码率。 从而在 采用固定带宽传输时将会导致播放过程中出现较多的緩沖,造成视频播放停 顿, 严重影响用户的 QoE。
为了解决视频播放过程中过多的緩沖问题, 业界常见的一种方法是为流 媒体视频设置 1.1倍至 1.2倍平均码率的带宽, 从而控制视频的緩沖次数。 这种方法对于视频内容变化不大(如新闻播报节目 )和采用 CBR视频编码 的流媒体而言较为有效, 但对于采用 VBR视频编码的普通视频内容和电影 来说,往往会在视频流码率突然提高的部分造成停顿,影响用户的视频体验。 如果设置过大的带宽, 例如设置 2倍平均码率的带宽, 则可能造成接入用户 的能力下降。
另一种解决视频播放过程中的停顿问题的方法是,在播放前緩沖较多数 据, 或在播放开始阶段进行快速填充(Fast Filling ), 以通过播放开始的緩沖 区来平滑视频播放中的码率变化部分。 该方法存在如下缺点: 首先是需要较 大的初始緩沖区, 这对于移动设备而言带来了成本的提高; 其次, 初始緩沖 较多数据意味着等待播放的时间增加, 这也会影响到用户的 QoE; 再次, 由 于用户存在观看几分钟甚至更短时间就换节目的可能, 因而初始緩沖较多数 据和快速填充技术都会造成带宽的浪费。
第三类方法是根据视频码率变化的情况实时调整带宽,保证视频不发生 严重的停顿;或是根据带宽的变化实时调整视频的码率,例如基于 HTTP协 议的动态自适应流媒体传输( Dynamic Adaptive Streaming over HTTP , 筒称 为 "DASH" )技术等。 但在该类方法中, 实时调整带宽会面临资源受限, 带 宽可以减小却无法增加的情况会影响调整的效果,并且采用 DASH等调整码 率技术会影响视频的画面质量, 降低用户的 QoE。
因此, 对于目前的视频播放方案, 在节省网络带宽的同时, 由于视频播 放停顿较多, 用户体险较差。 发明内容
本发明提供了一种用于分配带宽的方法和视频网关, 能够在节省网络带 宽的同时, 提高用户体验。
第一方面, 提供了一种用于分配带宽的方法, 该方法包括: 获取视频片 段的数据信息, 该视频片段的数据信息包括视频片段大小和视频片段播放时 间; 确定请求播放该视频片段的用户设备的体验质量 QoE需求信息; 根据 该视频片段的数据信息和该体验质量需求信息,确定传输该视频片段所需的 传输带宽。
结合第一方面, 在第一方面的第一种可能的实现方式中, 该体验质量需 求信息包括下列信息中的至少一项: 视频播放之前的初始緩存时间、 视频播 放中允许的再緩存时间、视频播放中允许的再緩存次数和视频播放中允许的 再緩存频率。
结合第一方面, 在第一方面的第二种可能的实现方式中, 该确定传输该 视频片段所需的传输带宽,包括:将该视频片段划分成至少两个视频子片段; 确定该至少两个视频子片段中的每个视频子片段的数据信息; 根据该每个视 频子片段的数据信息和视频播放之前的初始緩存时间, 或根据该每个视频子 片段的数据信息、视频播放之前的初始緩存时间和视频播放中允许的再緩存 时间, 确定传输该每个视频子片段所需的传输带宽; 将传输该每个视频子片 段所需的传输带宽中的最大值确定为传输该视频片段所需的传输带宽。
结合第一方面、 第一方面的第一种或第二种可能的实现方式, 在第一方 面的第三种可能的实现方式中, 该获取视频片段的数据信息, 包括: 从分组 数据网 PDN获取该视频片段; 根据该视频片段, 获取该视频片段的数据信 息; 或从该 PDN获取该视频片段的数据信息。
结合第一方面、 第一方面的第一种或第二种可能的实现方式, 在第一方 面的第四种可能的实现方式中, 该确定请求播放该视频片段的用户设备的 QoE 需求信息, 包括: 根据该用户设备的签约信息和 /或服务等级信息, 确 定该用户设备的 QoE需求信息。
结合第一方面或第一方面的第一种至第四种可能的实现方式中的任一 种可能的实现方式,在第一方面的第五种可能的实现方式中,该方法还包括: 向基站发送业务带宽请求消息, 该业务带宽请求消息包括传输该视频片段所 需的传输带宽;接收该基站在确定分配传输该视频片段所需的传输带宽时发 送的业务带宽分配完成消息。
结合第一方面的第五种可能的实现方式,在第一方面的第六种可能的实 现方式中, 该业务带宽请求消息为承载建立请求消息, 该业务带宽分配完成 消息为承载建立完成消息; 或该业务带宽请求消息为承载修改请求消息, 该 业务带宽分配完成消息为承载修改完成消息。 结合第一方面或第一方面的第一种至第四种可能的实现方式中的任一 种可能的实现方式,在第一方面的第七种可能的实现方式中,该方法还包括: 向基站发送业务带宽请求消息, 该业务带宽请求消息包括该用户设备请求传 输的至少两个视频片段中的每个视频片段所需的传输带宽, 以及该每个视频 片段所需的传输带宽的触发时间信息, 以便于该基站根据该触发时间信息分 别确定是否分配传输该每个视频片段所需的传输带宽。
结合第一方面或第一方面的第一种至第七种可能的实现方式中的任一 种可能的实现方式,在第一方面的第八种可能的实现方式中,该方法还包括: 根据传输该视频片段所需的传输带宽, 生成或更新多媒体表示描述 MPD文 件; 将生成或更新的该 MPD文件发送给该用户设备。
第二方面, 提供了一种视频网关, 该视频网关包括: 获取模块, 用于获 取视频片段的数据信息, 该视频片段的数据信息包括视频片段大小和视频片 段播放时间; 第一确定模块, 用于确定请求播放该视频片段的用户设备的体 验质量 QoE需求信息; 第二确定模块, 用于根据该获取模块获取的该视频 片段的数据信息和该第一确定模块确定的该体验质量需求信息,确定传输该 视频片段所需的传输带宽。
结合第二方面, 在第二方面的第一种可能的实现方式中, 该第一确定模 块确定的该体验质量需求信息包括下列信息中的至少一项: 视频播放之前的 初始緩存时间、 视频播放中允许的再緩存时间、 视频播放中允许的再緩存次 数和视频播放中允许的再緩存频率。
结合第二方面, 在第二方面的第二种可能的实现方式中, 该第二确定模 块包括: 划分单元, 用于将该视频片段划分成至少两个视频子片段; 第一确 定单元, 用于确定该划分单元划分的该至少两个视频子片段中的每个视频子 片段的数据信息; 第二确定单元, 用于根据该第一确定单元确定的该每个视 频子片段的数据信息和视频播放之前的初始緩存时间, 或根据该第一确定单 元确定的该每个视频子片段的数据信息、视频播放之前的初始緩存时间和视 频播放中允许的再緩存时间, 确定传输该每个视频子片段所需的传输带宽; 第三确定单元, 用于将该第二确定单元确定的传输该每个视频子片段所需的 传输带宽中的最大值确定为传输该视频片段所需的传输带宽。
结合第二方面、 第二方面的第一种或第二种可能的实现方式, 在第二方 面的第三种可能的实现方式中, 该获取模块包括: 第一获取单元, 用于从分 组数据网 PDN获取该视频片段; 第二获取单元, 用于根据该第一获取单元 获取的该视频片段, 获取该视频片段的数据信息; 或第三获取单元, 用于从 该 PDN获取该视频片段的数据信息。
结合第二方面、 第二方面的第一种或第二种可能的实现方式, 在第二方 面的第四种可能的实现方式中, 该第一确定模块具体用于: 根据该用户设备 的签约信息和 /或服务等级信息, 确定该用户设备的 QoE需求信息。
结合第二方面或第二方面的第一种至第四种可能的实现方式中的任一 种可能的实现方式, 在第二方面的第五种可能的实现方式中, 该视频网关还 包括: 第一发送模块, 用于向基站发送业务带宽请求消息, 该业务带宽请求 消息包括传输该视频片段所需的传输带宽; 接收模块, 用于接收该基站在确 定分配传输该视频片段所需的传输带宽时发送的业务带宽分配完成消息。
结合第二方面的第五种可能的实现方式,在第二方面的第六种可能的实 现方式中, 该第一发送模块发送的该业务带宽请求消息为承载建立请求消 息, 该接收模块接收的该业务带宽分配完成消息为承载建立完成消息; 或该 第一发送模块发送的该业务带宽请求消息为承载修改请求消息,该接收模块 接收的该业务带宽分配完成消息为承载修改完成消息。
结合第二方面或第二方面的第一种至第四种可能的实现方式中的任一 种可能的实现方式, 在第二方面的第七种可能的实现方式中, 该视频网关还 包括: 第二发送模块, 用于向基站发送业务带宽请求消息, 该业务带宽请求 消息包括该用户设备请求传输的至少两个视频片段中的每个视频片段所需 的传输带宽, 以及该每个视频片段所需的传输带宽的触发时间信息, 以便于 该基站根据该触发时间信息分别确定是否分配传输该每个视频片段所需的 传输带宽。
结合第二方面或第二方面的第一种至第七种可能的实现方式中的任一 种可能的实现方式, 在第二方面的第八种可能的实现方式中, 该视频网关还 包括: 处理模块, 用于根据传输该视频片段所需的传输带宽, 生成或更新多 媒体表示描述 MPD文件; 第三发送模块, 用于将该处理模块生成或更新的 该 MPD文件发送给该用户设备。
基于上述技术方案, 本发明实施例的用于分配带宽的方法和视频网关, 通过根据视频片段的数据信息和用户设备的体验质量需求信息, 能够确定传 输该视频片段所需的传输带宽,从而能够控制视频片段在播放过程中的再緩 存概率和 /或再緩存时间, 提高用户的体验, 并能够同时节省网络的带宽,提 高小区的用户接入数, 避免不必要的带宽浪费。 附图说明
为了更清楚地说明本发明实施例的技术方案, 下面将对本发明实施例中 所需要使用的附图作筒单地介绍, 显而易见地, 下面所描述的附图仅仅是本 发明的一些实施例, 对于本领域普通技术人员来讲, 在不付出创造性劳动的 前提下, 还可以根据这些附图获得其他的附图。
图 1是根据本发明实施例的用于分配带宽的方法的示意性流程图。
图 2是根据本发明实施例的获取数据信息的方法的示意性流程图。
图 3是根据本发明实施例的确定传输带宽的方法的示意性流程图。
图 4是根据本发明实施例的用于分配带宽的方法的另一示意性流程图。 图 5是根据本发明实施例的用于分配带宽的方法的再一示意性流程图。 图 6是根据本发明另一实施例的用于分配带宽的方法的示意性流程图。 图 7是根据本发明实施例的视频网关的示意性框图。
图 8是根据本发明实施例的第二确定模块的示意性框图。
图 9是根据本发明实施例的获取模块的示意性框图。
图 10是根据本发明实施例的视频网关的另一示意性框图。
图 11是根据本发明实施例的视频网关的再一示意性框图。
图 12是根据本发明实施例的视频网关的再一示意性框图。
图 13是根据本发明实施例的视频网关的再一示意性框图。
图 14是根据本发明另一实施例的视频网关的示意性框图。 具体实施方式
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行 清楚、 完整地描述, 显然, 所描述的实施例是本发明的一部分实施例, 而不 是全部实施例。 基于本发明中的实施例, 本领域普通技术人员在没有做出创 造性劳动的前提下所获得的所有其他实施例, 都应属于本发明保护的范围。
应理解, 本发明实施例的技术方案可以应用于各种通信系统, 例如: 全 球移动通讯 ( Global System of Mobile communication, 筒称为 "GSM" )系统、 码分多址(Code Division Multiple Access, 筒称为 "CDMA" ) 系统、 宽带码 分多址( Wideband Code Division Multiple Access , 筒称为 "WCDMA" )系统、 通用分组无线业务(General Packet Radio Service, 筒称为 "GPRS" )、 长期 演进( Long Term Evolution, 筒称为 "LTE" )系统、 LTE频分双工( Frequency Division Duplex,筒称为 "FDD" )系统、 LTE时分双工( Time Division Duplex, 筒称为 "TDD" )、 通用移动通信系统(Universal Mobile Telecommunication System, 筒称为 "UMTS" )或全球互联微波接入( Worldwide Interoperability for Microwave Access , 筒称为 " WiMAX" )通信系统等。
还应理解, 本发明实施例的技术方案可以应用于各种流媒体传输技术, 例如, DASH技术, HTTP实时流媒体(HTTP Live Streaming,筒称为 "HLS" ) 技术等。 本发明实施例仅以 DASH技术或 HLS技术为例进行说明, 但本发 明并不限于此。
图 1示出了根据本发明实施例的用于分配带宽的方法 100的示意性流程 图, 该方法 100可以由诸如视频网关或视频服务器的管理设备执行。 如图 1 所示, 该方法 100包括:
S110, 获取视频片段的数据信息, 该视频片段的数据信息包括视频片段 大小和视频片段播放时间;
S120, 确定请求播放该视频片段的用户设备的体验质量 QoE需求信息; S130, 根据该视频片段的数据信息和该体验质量需求信息, 确定传输该 视频片段所需的传输带宽。
具体而言, 为了在节省网络带宽的同时, 能够提高视频播放过程中的用 户体验,诸如视频网关的管理设备可以获取视频片段的数据信息以及确定用 户设备的 QoE需求信息, 并且视频网关可以根据该视频片段的数据信息和 该体验质量需求信息, 确定传输该视频片段所需的传输带宽, 由此能够避免 带宽浪费,并能够控制播放过程中的再緩存概率和 /或再緩存时间,从而能够 提高视频播放过程中的用户体验。
因此, 本发明实施例的用于分配带宽的方法, 通过根据视频片段的数据 信息和用户设备的体验质量需求信息, 能够确定传输该视频片段所需的传输 带宽, 从而能够控制视频片段在播放过程中的再緩存概率和 /或再緩存时间, 提高用户的体验, 并能够同时节省网络的带宽, 提高小区的用户接入数, 避 免不必要的带宽浪费。
在本发明实施例中,视频片段可以是任意大小或任意播放长度的一段视 频, 例如, 视频片段可以是视频帧, 也可以是画面组(Group of Pictures, 筒 称为 "GOP" ), 还可以是待播放的整个视频, 但本发明实施例并不限于此, 例如, 该视频片段还可以是其它大小或播放长度的一段视频。
在 S110中, 视频网关可以通过多种方式获取视频片段的数据信息, 下 面将结合图 2进行说明。
如图 2所示, 根据本发明实施例的获取数据信息的方法 110包括:
5111 , 从分组数据网 ( Packet Data Network, 筒称为 "PDN" )获取该视 频片段, 具体地, 可以是从分组数据网中的业务服务设备获取该视频片段;
5112, 根据该视频片段, 获取该视频片段的数据信息; 或
S113, 从该 PDN获取该视频片段的数据信息。
即视频网关可以首先获取视频片段,再根据该视频片段获得相应的数据 信息; 当然, 视频网关也可以直接从 PDN获取视频片段的数据信息; 此外, 视频网关也可以获取视频片段的播放时间与相应所需传输的数据量的对应 关系。
在本发明实施例中,视频片段的数据信息可以包括视频片段大小和视频 片段播放时间, 其中, 该视频片段大小既可以包括整个视频片段的大小, 也 可以包括视频片段中的各视频帧的大小,还可以包括视频片段中的各视频子 片段的大小; 类似地, 该视频片段播放时间既可以包括整个视频片段的播放 时间, 也可以包括视频片段中的各视频帧的播放时间, 还可以包括视频片段 中的各视频子片段的播放时间, 本发明实施例并不限于此。
在 S120中, 视频网关可以确定请求播放该视频片段的用户设备的体验 质量需求信息; 可选地,视频网关根据该用户设备的签约信息和 /或服务等级 信息, 确定该用户设备的 QoE需求信息。
在本发明实施例中, 用户设备的 QoE需求信息可以包括视频播放中的 流畅程度、 緩存程度等。 可选地, 体验质量需求信息包括下列信息中的至少 一项: 视频播放之前的初始緩存时间、 视频播放中允许的再緩存时间、 视频 播放中允许的再緩存次数和视频播放中允许的再緩存频率。
其中,视频播放之前的初始緩存时间可以表示视频播放之前的初始緩存 数据能够支持的视频播放时间长度, 例如, 初始緩存时间 TO可以指用户在 点播视频片段后, 客户端或用户设备需要緩存时间长度为 T0的视频内容, 才能开始播放; 例如, 需要预先緩存 10s的视频内容才能开始播放等。 再緩 存时间、再緩存次数和再緩存频率都是用于衡量视频片段播放过程中的流畅 程度, 其中, 再緩存时间可以表示在再緩存过程中,视频停止播放或用户等 待播放的时间, 并且再緩存次数和再緩存频率可以与再緩存时间具有对应关 系, 即根据再緩存次数或再緩存频率可以确定再緩存时间, 例如, 该对应关 系是函数关系或映射关系等。
在本发明实施例中, 用户设备的签约信息例如可以包括与运营商约定的 初始緩存时间、 视频播放中允许的再緩存时间或最小传输带宽等; 用户设备 的服务等级信息例如可以包括视频播放的流畅级别, 该流畅级别例如可以划 分为非常流畅、 流畅、 一般流畅、 不流畅等, 其中, 该流畅级别可以与緩存 时间具有对应关系。应理解,用户设备的签约信息和 /或服务等级信息还可以 包括其它体现 QoE需求的信息, 本发明实施例并不限于此。
在 S130中, 视频网关可以根据该视频片段的数据信息和该体验质量需 求信息, 确定传输该视频片段所需的传输带宽。
在本发明实施例中,视频网关可以根据该视频片段的数据信息和该体验 质量需求信息, 确定流畅播放该视频片段所需的最小带宽, 并将该最小带宽 作为传输该视频片段所需的传输带宽, 从而能够在节省网络带宽的同时, 控 制视频片段在播放过程中的再緩存概率和 /或再緩存时间,由此提高用户的体 验。
具体而言, 如图 3所示, 根据本发明实施例的确定传输该视频片段所需 的传输带宽的方法 130, 包括:
S131 , 将该视频片段划分成至少两个视频子片段;
5133 ,根据该每个视频子片段的数据信息和视频播放之前的初始緩存时 间, 或根据该每个视频子片段的数据信息、 视频播放之前的初始緩存时间和 视频播放中允许的再緩存时间, 确定传输该每个视频子片段所需的传输带 宽;
5134,将传输该每个视频子片段所需的传输带宽中的最大值确定为传输 该视频片段所需的传输带宽。
其中, 在 S131 中, 视频网关可以将视频片段划分成任意大小或任意播 放长度的至少两个视频子片段, 各个视频子片段的大小或播放长度可以相 同, 也可以不同, 本发明实施例并不限于此。 可选地, 以视频帧为单位对视 频片段进行划分, 即视频子片段为用户请求播放的视频片段所包括的视频 帧。
在 S133中, 每个视频子片段所需的传输带宽例如满足下面的等式(1 ) 或 (2 ):
其中, β/;表示第 n个视频子片段所需的传输带宽; 为第 i个视频子片 段的大小; 7:为从第一个视频子片段开始到第 n个视频子片段结束的播放时 间; Γ ^为视频播放之前的初始緩存时间; 7;6!#为视频播放中允许的再緩存时 间。
应理解,还可以采用其它方法确定传输该每个视频子片段所需的传输带 宽, 例如, 每个视频子片段所需的传输带宽可以由该视频子片段的大小与该 视频子片段实际观看时间的比值确定, 该视频子片段实际观看时间可以为该 视频子片段的播放时间与初始緩存时间之和,也可以为该视频子片段的播放 时间、 初始緩存时间以及再緩存时间之和, 本发明实施例并不限于此。
在 S134中, 视频网关可以将传输该每个视频子片段所需的传输带宽中 的最大值确定为传输该视频片段所需的传输带宽, 例如, 传输该视频片段所 需的传输带宽可
Figure imgf000012_0002
其中, fir表示传输该视频片段所需的传输带宽; N表示视频子片段的数 因此, 本发明实施例的用于分配带宽的方法, 通过根据视频片段的数据 信息和用户设备的体验质量需求信息, 能够确定传输该视频片段所需的传输 带宽, 从而能够控制视频片段在播放过程中的再緩存概率和 /或再緩存时间, 提高用户的体验, 并能够同时节省网络的带宽, 提高小区的用户接入数, 避 免不必要的带宽浪费。 在本发明实施例中, 可选地, 如图 4所示, 根据本发明实施例的用于分 配带宽的方法 100还包括:
S140, 向基站发送业务带宽请求消息, 该业务带宽请求消息包括传输该 视频片段所需的传输带宽;
S150,接收该基站在确定分配传输该视频片段所需的传输带宽时发送的 业务带宽分配完成消息。
具体而言, 视频网关可以向基站发送业务带宽请求, 以请求基站分配所 确定的传输该视频片段所需的传输带宽; 基站接收到该业务带宽请求后, 可 以依据当前的负载状态和所请求的传输带宽,确定是否可以分配传输该视频 片段所需的传输带宽; 如果基站确定可以分配该传输带宽, 则基站可以向视 频网关发送业务带宽分配完成消息, 以确认完成传输带宽的分配。
在本发明实施例中,可选地,该业务带宽请求消息为承载建立请求消息, 该业务带宽分配完成消息为承载建立完成消息; 或该业务带宽请求消息为承 载修改请求消息, 该业务带宽分配完成消息为承载修改完成消息。
应理解, 在本发明实施例中, 视频网关请求基站分配的带宽也可以是基 于该传输带宽而确定的其它带宽, 即该业务带宽请求消息可以包括基于该传 输带宽而确定的其它带宽; 还应理解, 该业务带宽请求消息可以用于请求修 改网络承载, 也可以用于修改业务数据流, 但本发明实施例并不限于此。
在本发明实施例中,视频网关可以将待播放的视频分为至少两个视频片 段, 并分别确定传输每个视频片段所需的传输带宽, 以动态调整传输每个视 频片段所需的传输带宽。视频网关可以向基站分别请求每个视频片段的分配 带宽, 也可以一次请求多个视频片段的分配带宽, 以减小信令开销, 从而进 一步提高用户体验。
具体而言, 可选地, 如图 4所示, 该方法 100还包括:
S160, 向基站发送业务带宽请求消息, 该业务带宽请求消息包括该用户 设备请求传输的至少两个视频片段中的每个视频片段所需的传输带宽, 以及 该每个视频片段所需的传输带宽的触发时间信息, 以便于该基站根据该触发 时间信息分别确定是否分配传输该每个视频片段所需的传输带宽。
即当视频网关一次请求多个视频片段的传输带宽时,基站可以根据每个 视频片段所需的传输带宽的触发时间信息, 分别确定是否分配传输该视频片 段所需的传输带宽, 从而动态分配带宽资源, 以提高系统资源的利用效率, 节省系统开销, 从而进一步提高用户体验。
在本发明实施例中, 该触发时间信息用于指示每个视频片段所需的传输 带宽的启用时间; 可选地, 该触发时间信息包括每个视频片段所需的传输带 宽的有效时间和 /或有效时间长度。还应理解,该业务带宽请求消息也可以仅 包括传输部分视频片段所需的传输带宽, 但本发明实施例并不限于此。
具体而言, 当视频网关一次请求多个视频片段的传输带宽时, 该请求消 息中可以包括视频片段的传输带宽的生效时间或有效时间, 比如: 以年月日 时分秒表示的绝对时间、 或以年月日时分秒表示的相对时间;
该请求消息中也可以包括视频片段的传输带宽的生效时间长度或有效 时间长度, 比如: 以年月日时分秒表示的时间长度; 例如: 当基站收到多个 带宽和对应的有效时间长度请求后, 启用第一个传输带宽并提供保障传输, 当该有效时间长度超时时, 则启用下一个传输带宽并提供保障传输;
特殊地,该业务带宽请求消息可以只对其中的一个或多个视频片段携带 具体的视频传输带宽数据, 而对其他的视频片段不指定具体的视频传输带宽 值; 例如: 可以设置一个传输带宽和该带宽的有效时间, 当该带宽的有效时 间超时时, 则不再为该视频提供保障的传输带宽, 而采用非保障的传输方式 传输视频; 当然, 也可以采用指定绝对时间的方式, 但本发明实施例并不限 于此。
因此, 本发明实施例的用于分配带宽的方法, 通过根据视频片段的数据 信息和用户设备的体验质量需求信息, 能够确定传输该视频片段所需的传输 带宽, 从而能够控制视频片段在播放过程中的再緩存概率和 /或再緩存时间, 提高用户的体验, 并能够同时节省网络的带宽, 提高小区的用户接入数, 避 免不必要的带宽浪费。
在本发明实施例中, 可选地, 如图 5所示, 该方法 100还包括:
S170, 根据传输该视频片段所需的传输带宽, 生成或更新多媒体表示描 述 MPD文件;
S 180 , 将生成或更新的该 MPD文件发送给该用户设备。
具体而言,在采用 DASH技术的视频传输方案中,客户端需要首先获取 到播放视频片段的 MPD 文件, 视频网关可以在获取到该视频片段的数据信 息后, 直接生成客户端所需要的 MPD文件, 该 MPD文件中包括的带宽信 息可以根据本发明实施例所述的方法确定; 视频网关也可以截取经过其传输 的 MPD文件, 并根据传输该视频片段所需的传输带宽, 将其中的带宽信息 进行更新。因此,当客户端通过视频网关请求 DASH多媒体表示描述( Media Presentation Description, 筒称为 "MPD" )文件时, 视频网关可以才艮据传输 该视频片段所需的传输带宽, 修改或重新生成 MPD文件, 并将该 MPD文 件发送给客户端, 其中该 MPD文件中例如可以包括初始緩存时间、 传输视 频片段所需的传输带宽等信息。
因此, 本发明实施例的用于分配带宽的方法, 通过根据视频片段的数据 信息和用户设备的体验质量需求信息, 能够确定传输该视频片段所需的传输 带宽, 从而能够控制视频片段在播放过程中的再緩存概率和 /或再緩存时间, 提高用户的体验, 并能够同时节省网络的带宽, 提高小区的用户接入数, 避 免不必要的带宽浪费。
下面将结合图 6所示的流程图,对根据本发明实施例的用于分配带宽的 方法 200进行详细描述。
如图 6所示, 在 S201中, 视频网关 VGW从 PDN获取视频片段的数据 信息。 视频网关可以先从 PDN获取该视频片段, 并根据该视频片段, 获取 该视频片段的数据信息; 或视频网关也可以直接从该 PDN获取该视频片段 明实施例并不限于此。
在 S202中, 视频网关可以根据该视频片段的数据信息, 以及请求播放 该视频片段的用户设备的体验质量 QoE需求信息, 确定传输该视频片段所 需的传输带宽。
以星球大战 IV为例进行说明, 假设视频播放的流畅程度要求为流畅播 放,播放过程中不出现卡顿现象;按照 1秒长度为单位对视频片段进行分段, 即以 1 秒做为每个视频子片段的播放时间长度; 再假设初始緩存时间为 0 秒, 则根据上述等式(3 )或 (4 ), 可以确定流畅传输该视频片段所需要的 最小带宽为 1.4倍平均码率。
在 S203中, 视频网关向基站 eNB发送业务带宽请求, 该业务带宽请求 可以是承载建立请求, 也可以是承载修改请求, 该业务带宽请求中包括在 S202中确定的满足用户设备的 QoE需求的最低带宽信息。 当视频网关一次 请求多个视频片段的传输带宽时,该业务带宽请求还可以包括每个视频片段 所需的传输带宽的触发时间信息, 以便于该基站根据该触发时间信息分别确 定是否分配传输该每个视频片段所需的传输带宽。
在 S204中, 基站接收到该业务带宽请求后, 可以根据当前的负载状态 和所请求的传输带宽, 判断是否可以接纳该业务请求; 如果基站可以为该业 务分配所请求的传输带宽, 则基站接纳该业务请求。
在 S205 中, 可选地, 基站向用户设备发送无线^ ^载建立消息, 或无线 承载修改消息, 以建立或修改无线承载; 基站也可以向用户设备发送无线资 源控制连接重配置消息等, 本发明实施例并不限于此。
在 S206中, 可选地, 如果用户设备配置成功, 则用户设备可以反馈无 线承载建立消息, 或无线承载修改完成消息, 或无线资源控制连接重配置完 成消息。
在 S207 中, 基站向视频网关反馈业务带宽分配完成消息, 该消息可以 为 7 载建立完成消息或 7 载爹改完成消息。
在 S208中, 如果视频网关在 S201中没有获取到视频数据,则视频网关 从分组数据网络中获取视频数据, 并且视频网关将视频数据通过已经建立的 业务传输承载发送给用户设备。
应理解, 在本发明的各种实施例中, 上述各过程的序号的大小并不意味 着执行顺序的先后, 各过程的执行顺序应以其功能和内在逻辑确定, 而不应 对本发明实施例的实施过程构成任何限定。
因此, 本发明实施例的用于分配带宽的方法, 通过根据视频片段的数据 信息和用户设备的体验质量需求信息, 能够确定传输该视频片段所需的传输 带宽, 从而能够控制视频片段在播放过程中的再緩存概率和 /或再緩存时间, 提高用户的体验, 并能够同时节省网络的带宽, 提高小区的用户接入数, 避 免不必要的带宽浪费。
上文中结合图 1至图 6, 详细描述了根据本发明实施例的用于分配带宽 的方法, 下面将结合图 7至图 14, 详细描述根据本发明实施例的视频网关。
如图 7所示, 根据本发明实施例的视频网关 500包括:
获耳 ^莫块 510, 用于获取视频片段的数据信息, 该视频片段的数据信息 包括视频片段大小和视频片段播放时间;
第一确定模块 520, 用于确定请求播放该视频片段的用户设备的体验质 量 QoE需求信息;
第二确定模块 530, 用于根据该获取模块 510获取的该视频片段的数据 信息和该第一确定模块 520确定的该体验质量需求信息,确定传输该视频片 段所需的传输带宽。
因此, 本发明实施例的视频网关, 通过根据视频片段的数据信息和用户 设备的体验质量需求信息, 能够确定传输该视频片段所需的传输带宽, 从而 能够控制视频片段在播放过程中的再緩存概率和 /或再緩存时间,提高用户的 体验, 并能够同时节省网络的带宽, 提高小区的用户接入数, 避免不必要的 带宽浪费。
在本发明实施例中, 可选地, 该第一确定模块 520确定的该体 3 质量需 求信息包括下列信息中的至少一项: 视频播放之前的初始緩存时间、 视频播 放中允许的再緩存时间、视频播放中允许的再緩存次数和视频播放中允许的 再緩存频率。
在本发明实施例中, 可选地, 如图 8所示, 该第二确定模块 530包括: 划分单元 531 , 用于将该视频片段划分成至少两个视频子片段; 第一确定单元 532, 用于确定该划分单元 531划分的该至少两个视频子 片段中的每个视频子片段的数据信息;
第二确定单元 533 , 用于根据该第一确定单元 532确定的该每个视频子 片段的数据信息和视频播放之前的初始緩存时间, 或根据该第一确定单元 532确定的该每个视频子片段的数据信息、 视频播放之前的初始緩存时间和 视频播放中允许的再緩存时间, 确定传输该每个视频子片段所需的传输带 宽;
第三确定单元 534, 用于将该第二确定单元 533确定的传输该每个视频 子片段所需的传输带宽中的最大值确定为传输该视频片段所需的传输带宽。
在本发明实施例中, 可选地, 如图 9所示, 该获取模块 510包括: 第一获取单元 511 , 用于从分组数据网 PDN获取该视频片段; 第二获取单元 512, 用于根据该第一获取单元 511获取的该视频片段, 获取该视频片段的数据信息。
在本发明实施例中, 可选地, 如图 10所示, 该获取模块 510包括: 第三获取单元 513 , 用于从该 PDN获取该视频片段的数据信息。
在本发明实施例中, 可选地, 该第一确定模块 520具体用于: 根据该用 户设备的签约信息和 /或服务等级信息, 确定该用户设备的 QoE需求信息。
在本发明实施例中, 可选地, 如图 11所示, 该视频网关 500还包括: 第一发送模块 540, 用于向基站发送业务带宽请求消息, 该业务带宽请 求消息包括传输该视频片段所需的传输带宽;
接收模块 550, 用于接收该基站在确定分配传输该视频片段所需的传输 带宽时发送的业务带宽分配完成消息。
在本发明实施例中, 可选地, 该第一发送模块 540发送的该业务带宽请 求消息为承载建立请求消息, 该接收模块 550接收的该业务带宽分配完成消 息为承载建立完成消息; 或该第一发送模块 540发送的该业务带宽请求消息 为承载修改请求消息, 该接收模块 550接收的该业务带宽分配完成消息为承 载^ ί'爹改完成消息。
在本发明实施例中, 可选地, 如图 12所示, 该视频网关 500还包括: 第二发送模块 560, 用于向基站发送业务带宽请求消息, 该业务带宽请 求消息包括该用户设备请求传输的至少两个视频片段中的每个视频片段所 需的传输带宽, 以及该每个视频片段所需的传输带宽的触发时间信息, 以便 于该基站根据该触发时间信息分别确定是否分配传输该每个视频片段所需 的传输带宽。
在本发明实施例中, 可选地, 如图 13所示, 该视频网关 500还包括: 处理模块 570, 用于根据传输该视频片段所需的传输带宽, 生成或更新 多媒体表示描述 MPD文件;
第三发送模块 580, 用于将该处理模块 570生成或更新的该 MPD文件 发送给该用户设备。
因此, 本发明实施例的视频网关, 通过根据视频片段的数据信息和用户 设备的体验质量需求信息, 能够确定传输该视频片段所需的传输带宽, 从而 能够控制视频片段在播放过程中的再緩存概率和 /或再緩存时间,提高用户的 体验, 并能够同时节省网络的带宽, 提高小区的用户接入数, 避免不必要的 带宽浪费。
另外, 本文中术语 "系统" 和 "网络" 在本文中常被可互换使用。 本文 中术语 "和 /或,,, 仅仅是一种描述关联对象的关联关系, 表示可以存在三种 关系, 例如, Α和 /或 Β, 可以表示: 单独存在 A, 同时存在 A和 B, 单独存 在 B这三种情况。另外,本文中字符 " ,—般表示前后关联对象是一种 "或" 的关系。
应理解, 在本发明实施例中, "与 A相应的 B"表示 B与 A相关联, 根 据 A可以确定 B。 但还应理解, 根据 A确定 B并不意味着仅仅根据 A确定 B, 还可以根据 A和 /或其它信息确定^
如图 14所示, 本发明实施例还提供了一种视频网关 700, 该视频网关 700包括处理器 710、存储器 720和总线系统 730。 其中, 处理器 710和存储 器 720通过总线系统 730相连, 该存储器 720用于存储指令, 该处理器 710 用于执行该存储器 720存储的指令。 其中, 该处理器 710用于: 获取视频片 段的数据信息, 该视频片段的数据信息包括视频片段大小和视频片段播放时 间; 确定请求播放该视频片段的用户设备的体验质量 QoE需求信息; 根据 该视频片段的数据信息和该体验质量需求信息,确定传输该视频片段所需的 传输带宽。
因此, 本发明实施例的视频网关, 通过根据视频片段的数据信息和用户 设备的体验质量需求信息, 能够确定传输该视频片段所需的传输带宽, 从而 能够控制视频片段在播放过程中的再緩存概率和 /或再緩存时间,提高用户的 体验, 并能够同时节省网络的带宽, 提高小区的用户接入数, 避免不必要的 带宽浪费。
应理解,在本发明实施例中,该处理器 710可以是中央处理单元(Central Processing Unit, 筒称为 "CPU" ), 该处理器 710还可以是其他通用处理器、 数字信号处理器(DSP )、专用集成电路(ASIC )、现成可编程门阵列(FPGA ) 或者其他可编程逻辑器件、 分立门或者晶体管逻辑器件、 分立硬件组件等。 通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
该存储器 720可以包括只读存储器和随机存取存储器, 并向处理器 710 提供指令和数据。存储器 720的一部分还可以包括非易失性随机存取存储器。 例如, 存储器 720还可以存储设备类型的信息。
该总线系统 730除包括数据总线之外, 还可以包括电源总线、 控制总线 和状态信号总线等。 但是为了清楚说明起见, 在图中将各种总线都标为总线 系统 730。
在实现过程中,上述方法的各步骤可以通过处理器 710中的硬件的集成 逻辑电路或者软件形式的指令完成。结合本发明实施例所公开的方法的步骤 可以直接体现为硬件处理器执行完成, 或者用处理器中的硬件及软件模块组 合执行完成。 软件模块可以位于随机存储器, 闪存、 只读存储器, 可编程只 读存储器或者电可擦写可编程存储器、 寄存器等本领域成熟的存储介质中。 该存储介质位于存储器 720, 处理器 710读取存储器 720中的信息, 结合其 硬件完成上述方法的步骤。 为避免重复, 这里不再详细描述。
可选地, 作为一个实施例, 该处理器 710确定的体 3 质量需求信息包括 下列信息中的至少一项: 视频播放之前的初始緩存时间、 视频播放中允许的 再緩存时间、 视频播放中允许的再緩存次数和视频播放中允许的再緩存频 率。
可选地, 作为一个实施例, 该处理器 710确定传输该视频片段所需的传 输带宽, 包括: 将该视频片段划分成至少两个视频子片段; 确定该至少两个 视频子片段中的每个视频子片段的数据信息; 根据该每个视频子片段的数据 信息和视频播放之前的初始緩存时间, 或根据该每个视频子片段的数据信 息、 视频播放之前的初始緩存时间和视频播放中允许的再緩存时间, 确定传 输该每个视频子片段所需的传输带宽; 将传输该每个视频子片段所需的传输 带宽中的最大值确定为传输该视频片段所需的传输带宽。
可选地, 作为一个实施例, 该处理器 710获取视频片段的数据信息, 包 括: 从分组数据网 PDN获取该视频片段; 根据该视频片段, 获取该视频片 段的数据信息; 或从该 PDN获取该视频片段的数据信息。
可选地, 作为一个实施例, 该处理器 710确定请求播放该视频片段的用 户设备的 QoE需求信息, 包括: 根据该用户设备的签约信息和 /或服务等级 信息, 确定该用户设备的 QoE需求信息。
可选地, 作为一个实施例, 如图 14所示, 该视频网关 700还包括接收
740和发送器 750, 其中, 该发送器 750用于向基站发送业务带宽请求消息, 该业务带宽请求消息包括传输该视频片段所需的传输带宽; 该接收器 740用 于接收该基站在确定分配传输该视频片段所需的传输带宽时发送的业务带 宽分配完成消息。
可选地, 作为一个实施例, 该业务带宽请求消息为承载建立请求消息, 该业务带宽分配完成消息为承载建立完成消息; 或该业务带宽请求消息为承 载修改请求消息, 该业务带宽分配完成消息为承载修改完成消息。
可选地, 作为一个实施例, 该发送器 750还用于向基站发送业务带宽请 求消息, 该业务带宽请求消息包括该用户设备请求传输的至少两个视频片段 中的每个视频片段所需的传输带宽, 以及该每个视频片段所需的传输带宽的 触发时间信息, 以便于该基站根据该触发时间信息分别确定是否分配传输该 每个视频片段所需的传输带宽。
可选地, 作为一个实施例, 该处理器 710还用于根据传输该视频片段所 需的传输带宽, 生成或更新多媒体表示描述 MPD文件; 该发送器 750还用 于将生成或更新的该 MPD文件发送给该用户设备。
因此, 本发明实施例的视频网关, 通过根据视频片段的数据信息和用户 设备的体验质量需求信息, 能够确定传输该视频片段所需的传输带宽, 从而 能够控制视频片段在播放过程中的再緩存概率和 /或再緩存时间,提高用户的 体验, 并能够同时节省网络的带宽, 提高小区的用户接入数, 避免不必要的 带宽浪费。
本领域普通技术人员可以意识到, 结合本文中所公开的实施例描述的各 示例的单元及算法步骤, 能够以电子硬件、 计算机软件或者二者的结合来实 现, 为了清楚地说明硬件和软件的可互换性, 在上述说明中已经按照功能一 般性地描述了各示例的组成及步骤。这些功能究竟以硬件还是软件方式来执 行, 取决于技术方案的特定应用和设计约束条件。 专业技术人员可以对每个 特定的应用来使用不同方法来实现所描述的功能,但是这种实现不应认为超 出本发明的范围。
所属领域的技术人员可以清楚地了解到, 为了描述的方便和筒洁, 上述 描述的系统、 装置和单元的具体工作过程, 可以参考前述方法实施例中的对 应过程, 在此不再赘述。
在本申请所提供的几个实施例中, 应该理解到, 所揭露的系统、 装置和 方法, 可以通过其它的方式实现。 例如, 以上所描述的装置实施例仅仅是示 意性的, 例如, 所述单元的划分, 仅仅为一种逻辑功能划分, 实际实现时可 以有另外的划分方式, 例如多个单元或组件可以结合或者可以集成到另一个 系统, 或一些特征可以忽略, 或不执行。 另外, 所显示或讨论的相互之间的 耦合或直接耦合或通信连接可以是通过一些接口、装置或单元的间接耦合或 通信连接, 也可以是电的, 机械的或其它的形式连接。 为单元显示的部件可以是或者也可以不是物理单元, 即可以位于一个地方, 或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或 者全部单元来实现本发明实施例方案的目的。
另外, 在本发明各个实施例中的各功能单元可以集成在一个处理单元 中, 也可以是各个单元单独物理存在, 也可以是两个或两个以上单元集成在 一个单元中。 上述集成的单元既可以采用硬件的形式实现, 也可以采用软件 功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销 售或使用时, 可以存储在一个计算机可读取存储介质中。 基于这样的理解, 本发明的技术方案本质上或者说对现有技术做出贡献的部分, 或者该技术方 案的全部或部分可以以软件产品的形式体现出来, 该计算机软件产品存储在 一个存储介质中, 包括若干指令用以使得一台计算机设备(可以是个人计算 机, 服务器, 或者网络设备等)执行本发明各个实施例所述方法的全部或部 分步骤。 而前述的存储介质包括: U盘、 移动硬盘、 只读存储器(ROM, Read-Only Memory )、 随机存取存储器 ( RAM, Random Access Memory )、 磁碟或者光盘等各种可以存储程序代码的介质。
以上所述, 仅为本发明的具体实施方式, 但本发明的保护范围并不局限 于此, 任何熟悉本技术领域的技术人员在本发明揭露的技术范围内, 可轻易 想到各种等效的修改或替换, 这些修改或替换都应涵盖在本发明的保护范围 之内。 因此, 本发明的保护范围应以权利要求的保护范围为准。

Claims

权利要求
1、 一种用于分配带宽的方法, 其特征在于, 包括:
获取视频片段的数据信息, 所述视频片段的数据信息包括视频片段大小 和视频片段播放时间;
确定请求播放所述视频片段的用户设备的体验质量 QoE需求信息; 根据所述视频片段的数据信息和所述体验质量需求信息,确定传输所述 视频片段所需的传输带宽。
2、 根据权利要求 1所述的方法, 其特征在于, 所述体验质量需求信息 包括下列信息中的至少一项: 视频播放之前的初始緩存时间、 视频播放中允 许的再緩存时间、视频播放中允许的再緩存次数和视频播放中允许的再緩存 频率。
3、 根据权利要求 1所述的方法, 其特征在于, 所述确定传输所述视频 片段所需的传输带宽, 包括:
将所述视频片段划分成至少两个视频子片段; 根据所述每个视频子片段的数据信息和视频播放之前的初始緩存时间, 或根据所述每个视频子片段的数据信息、视频播放之前的初始緩存时间和视 频播放中允许的再緩存时间, 确定传输所述每个视频子片段所需的传输带 宽;
将传输所述每个视频子片段所需的传输带宽中的最大值确定为传输所 述视频片段所需的传输带宽。
4、 根据权利要求 1至 3中任一项所述的方法, 其特征在于, 所述获取 视频片段的数据信息, 包括:
从分组数据网 PDN获取所述视频片段;
根据所述视频片段, 获取所述视频片段的数据信息; 或
从所述 PDN获取所述视频片段的数据信息。
5、 根据权利要求 1至 3中任一项所述的方法, 其特征在于, 所述确定 请求播放所述视频片段的用户设备的 QoE需求信息, 包括:
根据所述用户设备的签约信息和 /或服务等级信息,确定所述用户设备的 QoE需求信息。
6、 根据权利要求 1至 5中任一项所述的方法, 其特征在于, 所述方法 还包括:
向基站发送业务带宽请求消息, 所述业务带宽请求消息包括传输所述视 频片段所需的传输带宽;
接收所述基站在确定分配传输所述视频片段所需的传输带宽时发送的 业务带宽分配完成消息。
7、 根据权利要求 6所述的方法, 其特征在于, 所述业务带宽请求消息 为承载建立请求消息, 所述业务带宽分配完成消息为承载建立完成消息; 或 所述业务带宽请求消息为承载修改请求消息, 所述业务带宽分配完成消息为 承载修改完成消息。
8、 根据权利要求 1至 5中任一项所述的方法, 其特征在于, 所述方法 还包括:
向基站发送业务带宽请求消息, 所述业务带宽请求消息包括所述用户设 备请求传输的至少两个视频片段中的每个视频片段所需的传输带宽, 以及所 述每个视频片段所需的传输带宽的触发时间信息, 以便于所述基站根据所述 触发时间信息分别确定是否分配传输所述每个视频片段所需的传输带宽。
9、 根据权利要求 1至 8中任一项所述的方法, 其特征在于, 所述方法 还包括:
根据传输所述视频片段所需的传输带宽, 生成或更新多媒体表示描述 MPD文件;
将生成或更新的所述 MPD文件发送给所述用户设备。
10、 一种视频网关, 其特征在于, 包括:
获耳^莫块, 用于获取视频片段的数据信息, 所述视频片段的数据信息包 括视频片段大小和视频片段播放时间;
第一确定模块,用于确定请求播放所述视频片段的用户设备的体验质量 QoE需求信息;
第二确定模块,用于根据所述获取模块获取的所述视频片段的数据信息 和所述第一确定模块确定的所述体验质量需求信息,确定传输所述视频片段 所需的传输带宽。
11、 根据权利要求 10所述的视频网关, 其特征在于, 所述第一确定模 块确定的所述体验质量需求信息包括下列信息中的至少一项: 视频播放之前 的初始緩存时间、 视频播放中允许的再緩存时间、 视频播放中允许的再緩存 次数和视频播放中允许的再緩存频率。
12、 根据权利要求 10所述的视频网关, 其特征在于, 所述第二确定模 块包括:
Figure imgf000025_0001
中的每个视频子片段的数据信息;
第二确定单元,用于根据所述第一确定单元确定的所述每个视频子片段 的数据信息和视频播放之前的初始緩存时间, 或根据所述第一确定单元确定 的所述每个视频子片段的数据信息、视频播放之前的初始緩存时间和视频播 放中允许的再緩存时间, 确定传输所述每个视频子片段所需的传输带宽; 第三确定单元,用于将所述第二确定单元确定的传输所述每个视频子片 段所需的传输带宽中的最大值确定为传输所述视频片段所需的传输带宽。
13、 根据权利要求 10至 12中任一项所述的视频网关, 其特征在于, 所 述获取模块包括:
第一获取单元, 用于从分组数据网 PDN获取所述视频片段;
第二获取单元, 用于根据所述第一获取单元获取的所述视频片段, 获取 所述视频片段的数据信息; 或
第三获取单元, 用于从所述 PDN获取所述视频片段的数据信息。
14、 根据权利要求 10至 12中任一项所述的视频网关, 其特征在于, 所 述第一确定模块具体用于: 根据所述用户设备的签约信息和 /或服务等级信 息, 确定所述用户设备的 QoE需求信息。
15、 根据权利要求 10至 14中任一项所述的视频网关, 其特征在于, 所 述视频网关还包括:
第一发送模块, 用于向基站发送业务带宽请求消息, 所述业务带宽请求 消息包括传输所述视频片段所需的传输带宽;
接收模块, 用于接收所述基站在确定分配传输所述视频片段所需的传输 带宽时发送的业务带宽分配完成消息。
16、 根据权利要求 15所述的视频网关, 其特征在于, 所述第一发送模 块发送的所述业务带宽请求消息为承载建立请求消息, 所述接收模块接收的 所述业务带宽分配完成消息为承载建立完成消息; 或所述第一发送模块发送 的所述业务带宽请求消息为承载修改请求消息, 所述接收模块接收的所述业 务带宽分配完成消息为承载修改完成消息。
17、 根据权利要求 10至 14中任一项所述的视频网关, 其特征在于, 所 述视频网关还包括:
第二发送模块, 用于向基站发送业务带宽请求消息, 所述业务带宽请求 消息包括所述用户设备请求传输的至少两个视频片段中的每个视频片段所 需的传输带宽, 以及所述每个视频片段所需的传输带宽的触发时间信息, 以 便于所述基站根据所述触发时间信息分别确定是否分配传输所述每个视频 片段所需的传输带宽。
18、 根据权利要求 10至 17中任一项所述的视频网关, 其特征在于, 所 述视频网关还包括:
处理模块, 用于根据传输所述视频片段所需的传输带宽, 生成或更新多 媒体表示描述 MPD文件;
第三发送模块, 用于将所述处理模块生成或更新的所述 MPD文件发送 给所述用户设备。
PCT/CN2013/072303 2013-03-07 2013-03-07 用于分配带宽的方法和视频网关 WO2014134811A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2013/072303 WO2014134811A1 (zh) 2013-03-07 2013-03-07 用于分配带宽的方法和视频网关
CN201380003998.4A CN104170315B (zh) 2013-03-07 2013-03-07 用于分配带宽的方法和视频网关

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2013/072303 WO2014134811A1 (zh) 2013-03-07 2013-03-07 用于分配带宽的方法和视频网关

Publications (1)

Publication Number Publication Date
WO2014134811A1 true WO2014134811A1 (zh) 2014-09-12

Family

ID=51490580

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2013/072303 WO2014134811A1 (zh) 2013-03-07 2013-03-07 用于分配带宽的方法和视频网关

Country Status (2)

Country Link
CN (1) CN104170315B (zh)
WO (1) WO2014134811A1 (zh)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107734382A (zh) * 2017-08-28 2018-02-23 北京邮电大学 一种高低频协作环境下的视频传输方法及装置
EP3582503A4 (en) * 2017-02-09 2019-12-18 Hangzhou Hikvision Digital Technology Co., Ltd. VIDEO TRANSMISSION METHOD AND DEVICE
WO2021258608A1 (zh) * 2020-06-24 2021-12-30 北京达佳互联信息技术有限公司 带宽确定方法、装置、终端及存储介质

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110213179A (zh) * 2018-02-28 2019-09-06 优酷网络技术(北京)有限公司 带宽分配方法及装置
CN111385463B (zh) * 2018-12-29 2021-12-28 华为技术有限公司 用于控制摄像头的方法、控制装置、网络设备及摄像头
CN109831689B (zh) * 2019-01-28 2021-07-13 维沃移动通信有限公司 一种数据缓冲方法及移动终端

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101232462A (zh) * 2008-02-25 2008-07-30 杭州华三通信技术有限公司 实时业务的服务质量调整方法及装置
CN102474591A (zh) * 2009-07-28 2012-05-23 通用仪表公司 利用灵活信道绑定的ip视频传输

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5608446A (en) * 1994-03-31 1997-03-04 Lucent Technologies Inc. Apparatus and method for combining high bandwidth and low bandwidth data transfer

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101232462A (zh) * 2008-02-25 2008-07-30 杭州华三通信技术有限公司 实时业务的服务质量调整方法及装置
CN102474591A (zh) * 2009-07-28 2012-05-23 通用仪表公司 利用灵活信道绑定的ip视频传输

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3582503A4 (en) * 2017-02-09 2019-12-18 Hangzhou Hikvision Digital Technology Co., Ltd. VIDEO TRANSMISSION METHOD AND DEVICE
US10681400B2 (en) 2017-02-09 2020-06-09 Hangzhou Hikvision Digital Technology Co., Ltd. Method and device for transmitting video
CN107734382A (zh) * 2017-08-28 2018-02-23 北京邮电大学 一种高低频协作环境下的视频传输方法及装置
CN107734382B (zh) * 2017-08-28 2019-11-08 北京邮电大学 一种高低频协作环境下的视频传输方法及装置
WO2021258608A1 (zh) * 2020-06-24 2021-12-30 北京达佳互联信息技术有限公司 带宽确定方法、装置、终端及存储介质

Also Published As

Publication number Publication date
CN104170315B (zh) 2018-05-29
CN104170315A (zh) 2014-11-26

Similar Documents

Publication Publication Date Title
CN109891850B (zh) 用于减少360度视区自适应流媒体延迟的方法和装置
US8717890B2 (en) Application, usage and radio link aware transport network scheduler
TWI644566B (zh) 用於超文本傳輸協定上之動態自適串流的客戶的設備、伺服器的設備、及機器可讀儲存媒體
US20210410168A1 (en) Service data transmission method, network device, and terminal device
KR101397815B1 (ko) 프록시 피드백 제어된 프레임 전송을 사용하는 미디어 서버에 대한 콘텐츠 레이트 선택
US9015779B2 (en) Streaming video server with segment length control and methods for use therewith
WO2014134811A1 (zh) 用于分配带宽的方法和视频网关
US9609370B2 (en) Video delivery modification based on network availability
US8355450B1 (en) Buffer delay reduction
JP2017533607A (ja) ビデオ品質向上
WO2017031692A1 (zh) 视频下载方法、装置及系统
WO2012159587A1 (zh) 流媒体的处理方法、分发服务器、客户端及系统
EP3047627B1 (en) Dash representations adaptations in network
CN107210999B (zh) 链路感知流送自适应
US20140189064A1 (en) Method and system for adaptive video transmission
WO2018010119A1 (zh) 一种视频业务资源分配方法及装置
US20180213296A1 (en) Assisted acceleration for video streaming clients
WO2019070353A1 (en) NETWORK ASSISTANCE FOR CONTINUOUS UPLINK BROADCAST
US10609111B2 (en) Client-driven, ABR flow rate shaping
CN108476333A (zh) 媒体流的邻接流送
CN111742530B (zh) 流传输数据的方法、提供网络辅助的方法以及用户设备
JP5610743B2 (ja) コンテンツ受信方法及び装置
US10270832B1 (en) Method and system for modifying a media stream having a variable data rate
US11245935B1 (en) Managing supplemental content in content delivery systems
CN110278456B (zh) 动态时间窗口及缓存窗口的控制方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 13877221

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 13877221

Country of ref document: EP

Kind code of ref document: A1