WO2015123878A1 - 一种视频数据传输的方法以及相关设备 - Google Patents

一种视频数据传输的方法以及相关设备 Download PDF

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Publication number
WO2015123878A1
WO2015123878A1 PCT/CN2014/072421 CN2014072421W WO2015123878A1 WO 2015123878 A1 WO2015123878 A1 WO 2015123878A1 CN 2014072421 W CN2014072421 W CN 2014072421W WO 2015123878 A1 WO2015123878 A1 WO 2015123878A1
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WO
WIPO (PCT)
Prior art keywords
base station
information
transmission
video data
user equipment
Prior art date
Application number
PCT/CN2014/072421
Other languages
English (en)
French (fr)
Inventor
李志明
龚向阳
张士菊
赵敏丞
尚政
韦安妮
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.)
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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 CN201480001636.6A priority Critical patent/CN105122764B/zh
Priority to EP14883212.4A priority patent/EP3101861B1/en
Priority to PCT/CN2014/072421 priority patent/WO2015123878A1/zh
Priority to BR112016019249A priority patent/BR112016019249A2/pt
Priority to JP2016553557A priority patent/JP6253129B2/ja
Publication of WO2015123878A1 publication Critical patent/WO2015123878A1/zh
Priority to US15/243,400 priority patent/US10205668B2/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00Traffic control in data switching networks
    • H04L47/10Flow control; Congestion control
    • H04L47/25Flow control; Congestion control with rate being modified by the source upon detecting a change of network conditions
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B17/00Monitoring; Testing
    • H04B17/30Monitoring; Testing of propagation channels
    • H04B17/309Measuring or estimating channel quality parameters
    • H04B17/318Received signal strength
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/02Details
    • H04L12/14Charging, metering or billing arrangements for data wireline or wireless communications
    • H04L12/1403Architecture for metering, charging or billing
    • H04L12/1407Policy-and-charging control [PCC] architecture
    • 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
    • H04L65/611Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio for multicast or broadcast
    • 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
    • H04L65/612Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio for unicast
    • 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
    • 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
    • H04L65/75Media network packet handling
    • H04L65/762Media network packet handling at the source 
    • 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
    • H04L65/80Responding to QoS
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network arrangements or protocols for supporting network services or applications
    • H04L67/01Protocols
    • H04L67/02Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/08Testing, supervising or monitoring using real traffic
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/21Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/23Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W8/00Network data management
    • H04W8/18Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
    • H04W8/20Transfer of user or subscriber data

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a video data transmission method and related equipment. Background technique
  • the traditional DASH (Dynamic Adaptive Streaming over HTTP) service uses unicast transmission based on HTTP (Hypertext Transfer Protocol).
  • HTTP Hypertext Transfer Protocol
  • the embodiment of the invention provides a method for video data transmission and related equipment, which can improve the transmission mode of the DASH service to meet the needs of more users.
  • a first aspect of the present invention provides a base station, including:
  • a determining module configured to: when receiving the selection result information sent by the selecting device and the measurement configuration information used to indicate the channel quality test by the user equipment, determining, according to the selection result, the base station is the primary base station, and the selecting result includes the Selecting the primary base station information and the secondary base station information selected by the device; the measurement information transceiver module, configured to send the measurement configuration information to the user equipment and the secondary base station connected to the base station, and receive the user equipment connected to the base station And channel quality information of the user equipment connected to the auxiliary base station fed back by the secondary base station according to the measurement configuration information; a decision module for generating decision information based on the channel quality information and video service information acquired from the transmission conversion device, and transmitting the decision information to the transmission conversion device to cause the transmission conversion device Notifying the unicast service network element to control video data unicast transmission and/or informing the multicast service network element to control video data multicast transmission according to the decision information;
  • the decision information includes a transmission mode of the video data and a transmission code rate.
  • the method further includes:
  • a video information acquiring module configured to acquire video service information from a transmission conversion device by using a preset IP network-based interface
  • the video service information includes a video data address requested by the user equipment and video rate information level information corresponding to the video data address, where the code rate level information includes at least one code rate corresponding to the video data.
  • the IP network-based interface is an interface for connecting the base station and the transmission conversion device.
  • the channel quality information of the user equipment connected to the secondary base station is measured by the user equipment connected to the secondary base station according to the measurement configuration information sent by the secondary base station.
  • the determining module includes:
  • a transmission mode selection unit configured to select a transmission mode of the video data according to the channel quality information and the video service information obtained from the transmission conversion device;
  • a transmission code rate selection unit configured to select a transmission code rate of the video data according to the channel quality information and the video service information obtained from the transmission conversion device;
  • a decision sending unit configured to send the decision information carrying the transmission mode of the video data and the transmission code rate of the video data to the transmission conversion device.
  • the transmission mode selection unit includes: - a reference rate selection subunit, configured to select, according to the channel quality information, video data in the video rate information included in the video service information to be satisfied under both unicast transmission and multicast transmission The lowest code rate is used as the reference code rate;
  • a consumption resource calculation subunit configured to calculate a first total resource consumed by the unicast transmission mode at the reference code rate, and calculate a second total resource consumed by the multicast transmission mode at the reference code rate;
  • a mode selection subunit configured to select, by comparing the first total resource and the second total resource, a transmission mode in which the total resource consumed is the transmission mode of the video data.
  • the transmission rate selection unit includes:
  • a unit consumption calculation subunit configured to separately calculate, according to the channel quality information and the video bit rate level information included in the video service information, each video data in the selected transmission mode and the video code
  • the unit corresponding to each code rate in the rate level information consumes resources, and the unit consumed resources are resources consumed in each time slot;
  • a ratio calculation subunit for respectively calculating a ratio of a peak signal to noise ratio of each video data at each code rate to a corresponding unit consumption resource
  • Sorting the traversal sub-units and generating, according to the calculation ratio, a sorting result of each video data corresponding to each code rate, and traversing the sorting result in descending order;
  • the ratio selection subunit is configured to select a minimum calculation ratio that satisfies a preset resource condition during the traversal process
  • a transmission rate selection subunit configured to respectively select a current maximum transmission code rate corresponding to each video data according to video data corresponding to a minimum calculation ratio that is greater than or equal to the preset resource condition
  • the calculation ratio corresponding to the current maximum transmission code rate of each video data is greater than or equal to the minimum calculation ratio that can satisfy the preset resource condition
  • the preset resource condition is that the resource consumed by the multicast transmission mode is smaller than the first subframe number threshold, and the total resource consumed by the multicast transmission mode and the unicast transmission mode is smaller than the second subframe number threshold.
  • the channel quality information includes a signal to interference plus noise ratio (SINR) parameter measured by the user equipment in a unicast transmission mode, and a signal and interference plus noise ratio parameter measured by the user equipment in the multicast transmission mode; or
  • the channel quality information includes a signal and interference plus noise ratio parameter measured by the user equipment in a unicast transmission mode, and a channel quality of the base station in a multicast transmission mode, where the base station is in a multicast transmission mode.
  • User device coverage exceeds the preset coverage threshold.
  • the method further includes:
  • an update module configured to receive updated channel quality information when the measurement time interval reaches a measurement period included in the measurement configuration information, and update the decision information to update a transmission code rate of the video data.
  • the identifier information sending module is configured to send the primary base station identification information to the transmission conversion device, so that the transmission conversion device determines that the base station is the primary base station according to the primary base station identification information.
  • a second aspect of the present invention provides a transmission conversion apparatus, including:
  • An obtaining module configured to obtain video service information of a unicast service network element
  • a video information sending module configured to send the video service information to the base station, so that the base station generates, according to the video service information, the obtained channel quality information of each user equipment, where the base station is selected by the device.
  • the selected primary base station configured to send the video service information to the base station, so that the base station generates, according to the video service information, the obtained channel quality information of each user equipment, where the base station is selected by the device.
  • a decision information receiving module configured to receive the decision information sent by the base station, and The policy information is separately sent to the unicast service network element and the multicast service network element, so that the unicast service network element and the multicast service network element respectively control video data unicast transmission and control video data group Broadcast transmission.
  • the video information sending module is specifically configured to send the video service information to a base station by using a preset IP network-based interface
  • the video service information sent by the video information sending module includes the user equipment request level information including at least one code rate corresponding to the video data;
  • the IP network-based interface is an interface for connecting the base station and the transmission conversion device.
  • the decision information includes a transmission manner of the video data and a transmission code rate of the video data.
  • a third aspect of the present invention provides a selection apparatus, including:
  • a selection result generating module configured to select a primary base station and a secondary base station, and generate a selection result, where the selection result includes primary base station information and secondary base station information;
  • a result sending module configured to send the selection result and measurement configuration information used to indicate that the user equipment performs channel quality testing to the base station, so that the base station acquires channel quality information according to the selection result and the measurement configuration information to generate Decision information for unicast transmission and/or multicast transmission of video data;
  • the base station that receives the selection result is a base station corresponding to the primary base station information in the selection result.
  • the selecting result generating module includes:
  • a first selecting unit configured to randomly select one of the base stations as a primary base station in the network, and use other base stations in the network as the secondary base station;
  • a second selecting unit configured to select, in the network, a base station that has the largest number of user equipments as the primary base station, and use other base stations in the network as the secondary base station;
  • a third selecting unit configured to select, in the network, a base station with the best hardware performance as the primary base station, and use other base stations in the network as the secondary base station.
  • the identifier information receiving module is configured to receive the identifier information of the user equipment corresponding to the selected device and the globally unique cell identifier (ECGI) sent by the policy and charging rule function (PCRF) network element;
  • ECGI globally unique cell identifier
  • PCRF policy and charging rule function
  • a search sending module configured to search for a base station corresponding to the user equipment according to the identifier information of the user equipment and the ECGI, and send the identifier information of the user equipment to the corresponding base station; where the identifier of the user equipment
  • the information and the ECGI are found by the PCRF network element according to the user equipment network address sent by the unicast service network element.
  • a fourth aspect of the present invention provides a base station, including: a processor, a communication interface, and a memory, wherein
  • the communication interface is configured to communicate with a transmission conversion device, a selection device, a user equipment, and a secondary base station;
  • the memory is used to store a program
  • the processor is configured to execute the program to implement
  • the base station is the primary base station, and the selection result includes the selected by the selecting device.
  • the broadcast service network element controls video data unicast transmission and/or notifies the multicast service network element to control video data multicast transmission;
  • the decision information includes a transmission mode of the video data and a transmission code rate.
  • the processor is further configured to:
  • the video service information includes a video data address requested by the user equipment and the view Video rate rate level information corresponding to the frequency data address, the code rate level information including at least one code rate corresponding to the video data;
  • the IP network-based interface is an interface for connecting the base station and the transmission conversion device.
  • the channel quality information of the user equipment connected to the secondary base station is measured by the user equipment connected to the secondary base station according to the measurement configuration information sent by the secondary base station.
  • the processor is specifically configured to:
  • the processor is specifically configured to:
  • a transmission mode in which the total resource consumed is selected is selected as a transmission mode of the video data.
  • the processor is specifically configured to: Calculating, according to the channel quality information and the video bit rate level information included in the video service information, each video data in the selected transmission mode and each of the video bit rate level information
  • the unit corresponding to the code rate consumes resources, and the unit consumed resource is a resource consumed in each time slot;
  • the calculation ratio corresponding to the current maximum transmission code rate of each video data is greater than or equal to the minimum calculation ratio that can satisfy the preset resource condition
  • the preset resource condition is that the resource consumed by the multicast transmission mode is smaller than the first subframe number threshold, and the total resources consumed by the multicast transmission mode and the unicast transmission mode are smaller than the second subframe number threshold.
  • the channel quality information includes a signal to interference plus noise ratio (SINR) parameter measured by the user equipment in a unicast transmission mode, and a signal and interference plus noise ratio parameter measured by the user equipment in the multicast transmission mode; or
  • SINR signal to interference plus noise ratio
  • the channel quality information includes a signal and interference plus noise ratio parameter measured by the user equipment in a unicast transmission mode, and a channel quality of the base station in a multicast transmission mode, where the base station is in a multicast transmission mode.
  • User device coverage exceeds the preset coverage threshold.
  • the processor is further configured to: - when the measurement time interval reaches the measurement period included in the measurement configuration information, the updated channel quality information is received, and the decision information is updated to update the transmission code rate of the video data.
  • the processor is further configured to:
  • a fifth aspect of the present invention provides a transmission conversion apparatus, including: a processor, a communication interface, and a memory, wherein
  • the communication interface is configured to communicate with a base station, a unicast service network element, and a multicast service network element; the memory is configured to store a program;
  • the processor is configured to execute the program to implement
  • the base station Sending the video service information to the base station, so that the base station generates decision information according to the video service information and the obtained channel quality information of each user equipment, where the base station is a primary base station selected by the selecting device;
  • the unit controls video data unicast transmission and controls video data multicast transmission separately.
  • the processor is specifically configured to:
  • the video service information is sent to the base station by using a preset IP network-based interface, where the video service information includes a video data address requested by the user equipment and video rate rate information corresponding to the video data address, where
  • the code rate level information includes at least one code rate corresponding to the video data;
  • the IP network-based interface is configured to connect the base station and the transmission conversion device - - Interface.
  • the decision information includes a transmission manner of the video data and a transmission code rate of the video data.
  • a sixth aspect of the present invention provides a selection apparatus, including: a processor, a communication interface, and a memory, where
  • the communication interface is configured to communicate with a PCRF policy and charging rule function network element and a base station;
  • the memory is used to store a program
  • the processor is configured to execute the program to implement
  • the base station that receives the selection result is a base station corresponding to the primary base station information in the selection result.
  • the processor is specifically configured to:
  • the base station with the best hardware performance is selected as the primary base station in the network, and other base stations in the network are used as the secondary base station.
  • the processor is further configured to:
  • the identification information and the ECGI of the user equipment are found by the PCRF network element according to the network address of the user equipment sent by the unicast service network element.
  • a seventh aspect of the present invention provides a video data transmission method, including:
  • the base station determines that the base station is the primary base station according to the selection result, and the selection result includes the selection.
  • the primary base station information and the secondary base station information selected by the device the base station sends the measurement configuration information to the user equipment and the secondary base station connected to the base station, and receives the user equipment and the secondary base station connected to the base station according to the Decoding the channel quality information of the user equipment connected to the secondary base station that is fed back by the configuration information;
  • the base station generates decision information according to the channel quality information and video service information acquired from the transmission conversion device, and transmits the decision information to the transmission conversion device, so that the transmission conversion device according to the decision
  • the information notification unicast service network element controls video data unicast transmission and/or notifies the multicast service network element to control video data multicast transmission
  • the decision information includes a transmission mode of the video data and a transmission code rate.
  • the base station generates decision information according to the channel quality information and video service information acquired from a transmission conversion device, and sends the decision information to the transmission conversion device. Before the step, it also includes:
  • the base station acquires video service information from the transmission conversion device by using a preset IP network-based interface
  • the video service information includes a video data address requested by the user equipment and video rate information level information corresponding to the video data address, where the code rate level information includes at least one code rate corresponding to the video data.
  • the IP network-based interface is an interface for connecting the base station and the transmission conversion device.
  • - channel quality information of the user equipment connected to the secondary base station is measured by the user equipment connected to the secondary base station according to the measurement configuration information sent by the secondary base station.
  • the base station generates, according to the channel quality information and the video service information acquired from the transmission conversion device, the decision information, and Sending the decision information to the transmission conversion device includes:
  • the base station selects a transmission mode of the video data according to the channel quality information and the video service information acquired from the transmission conversion device;
  • the base station selects a transmission code rate of the video data according to the channel quality information and the video service information acquired from the transmission conversion device;
  • the base station transmits decision information carrying the transmission mode of the video data and the transmission code rate of the video data to the transmission conversion device.
  • the base station selects a transmission mode of the video data. , including:
  • the base station selects, according to the channel quality information, a lowest code rate that can be satisfied by the video data under the unicast transmission and the multicast transmission in the video code rate level information included in the video service information as a reference code rate;
  • the base station calculates a first total resource consumed by the unicast transmission mode at the reference code rate, and calculates a second total resource consumed by the multicast transmission mode at the reference code rate;
  • the base station selects, by comparing the first total resource and the second total resource, a transmission mode in which the total resources consumed is the least, as the transmission mode of the video data.
  • the base station respectively calculates, according to the channel quality information and the video bit rate level information included in the video service information, each video data in the selected transmission mode and the video bit rate level information.
  • the unit corresponding to the code rate consumes resources, and the unit consumes resources in each time slot. - - the resources consumed on it;
  • the base station separately calculates a calculated ratio of a peak signal to noise ratio of each video data at each code rate and a corresponding unit consumption resource;
  • the base station generates a sorting result of each video data corresponding to each code rate according to the calculated ratio, and traverses the sorting result in descending order;
  • the base station selects a minimum calculation ratio that satisfies a preset resource condition in the traversal process; the base station separately selects video data corresponding to a minimum calculation ratio that is greater than or equal to the preset resource condition.
  • the current maximum transmission code rate corresponding to each video data wherein, the calculation ratio corresponding to the current maximum transmission code rate of each video data is greater than or equal to the minimum calculation ratio that can satisfy the preset resource condition;
  • the preset resource condition is that the resource consumed by the multicast transmission mode is smaller than the first subframe number threshold, and the total resources consumed by the multicast transmission mode and the unicast transmission mode are smaller than the second subframe number threshold.
  • the channel quality information includes a signal to interference plus noise ratio (SINR) parameter measured by the user equipment in a unicast transmission mode, and a signal and interference plus noise ratio parameter measured by the user equipment in the multicast transmission mode; or
  • SINR signal to interference plus noise ratio
  • the channel quality information includes a signal and interference plus noise ratio parameter measured by the user equipment in a unicast transmission mode, and a channel quality of the base station in a multicast transmission mode, where the base station is in a multicast transmission mode.
  • User device coverage exceeds the preset coverage threshold.
  • the method further includes:
  • the base station When the measurement time interval reaches the measurement period included in the measurement configuration information, the base station receives the updated channel quality information, and updates the decision information to update the transmission code rate of the video data.
  • the seventh aspect or the first possible implementation of the seventh aspect, or the second possible implementation of the seventh aspect, or the third possible implementation of the seventh aspect, or the seventh aspect
  • the fourth possible implementation manner, or the fifth possible implementation manner of the seventh aspect, or the sixth possible implementation manner of the seventh aspect, or the seventh possible implementation manner of the seventh aspect include:
  • the base station sends the primary base station identification information to the transmission conversion device, so that the transmission conversion device determines that the base station is the primary base station according to the primary base station identification information.
  • An eighth aspect of the present invention provides a method for video data transmission, including:
  • the transmission conversion device acquires video service information of the unicast service network element
  • the transmission conversion device sends the video service information to the base station, so that the base station generates decision information according to the video service information and the obtained channel quality information of each user equipment, where the base station is selected by the selecting device. Out of the primary base station;
  • the transmission conversion device receives the decision information sent by the base station, and sends the decision information to the unicast service network element and the multicast service network element respectively, so that the unicast service network element and the The multicast service network element controls video data unicast transmission and control video data multicast transmission, respectively.
  • the transmitting and converting device sends the video service information to a base station, including:
  • the transmission conversion device sends the video service information to a base station through a preset IP network-based interface
  • the video service information includes a video data address requested by the user equipment and video rate information level information corresponding to the video data address, where the code rate level information includes at least one code rate corresponding to the video data.
  • the IP network-based interface is an interface for connecting the base station and the transmission conversion device.
  • the decision information includes a transmission manner of the video data and a transmission code rate of the video data.
  • a ninth aspect of the present invention provides a video data transmission method, including: - selecting means for selecting the primary base station and the secondary base station, and generating a selection result, the selection result comprising primary base station information and secondary base station information;
  • the selecting device sends the selection result and measurement configuration information used to indicate that the user equipment performs channel quality testing to the base station, so that the base station acquires channel quality information according to the selection result and the measurement configuration information to generate a pair for
  • the video data is subjected to a unicast transmission and/or a multicast transmission decision signal, wherein the base station that receives the selection result is a base station corresponding to the primary base station information in the selection result.
  • the selecting, by the selecting device, the primary base station and the secondary base station includes: randomly selecting one of the base stations as the primary base station in the network, and using other base stations in the network as the secondary base station; or
  • the base station with the best hardware performance is selected as the primary base station in the network, and other base stations in the network are used as the secondary base station.
  • the method before the step of generating, by the selecting device, the selection result according to the selection rule, the method further includes: the selecting device receiving Policy and Charging Rules Function (PCRF) The identity information of the user equipment corresponding to the selected device and the globally unique cell identifier (ECGI) sent by the network element;
  • PCRF Policy and Charging Rules Function
  • ECGI globally unique cell identifier
  • the selecting device searches for a base station corresponding to the user equipment according to the identifier information of the user equipment and the ECGI, and sends the identifier information of the user equipment to the corresponding base station;
  • the identification information and the ECGI of the user equipment are found by the PCRF network element according to the network address of the user equipment sent by the unicast service network element.
  • a tenth aspect of the present invention provides a computer storage medium
  • the computer storage medium may store a program that, when executed, includes some or all of the steps of a method of video data transmission provided by the seventh aspect.
  • An eleventh aspect of the present invention provides a computer storage medium
  • the computer storage medium may store a program, and the program includes one of the eighth aspects provided when executed - - Part or all of the steps of the method of video data transmission.
  • a twelfth aspect of the present invention provides a computer storage medium
  • the computer storage medium may store a program that, when executed, includes some or all of the steps of a method of video data transmission provided by the ninth aspect.
  • the embodiment of the present invention can generate the decision information by collecting the channel quality information and the video service information of the user equipment, so that the unicast service network element and the multicast service network element can respectively control the corresponding DASH video according to the decision information.
  • the data is unicast or multicast. Therefore, the DASH service with unicast and multicast hybrid transmission can make better use of wireless resources such as network bandwidth and provide users with better video quality to meet various users. demand.
  • FIG. 1 is a schematic structural diagram of a base station according to an embodiment of the present disclosure
  • FIG. 2 is a schematic structural diagram of a decision module according to an embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of a transmission mode selection unit according to an embodiment of the present invention
  • FIG. 4 is a schematic structural diagram of a transmission rate selection unit according to an embodiment of the present invention
  • Schematic diagram of a base station
  • FIG. 6 is a schematic structural diagram of still another base station according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of a transmission conversion apparatus according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of another transmission conversion apparatus according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic structural diagram of a selection apparatus according to an embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of another selection device according to an embodiment of the present disclosure.
  • FIG. 11 is a schematic structural diagram of still another selection device according to an embodiment of the present invention.
  • FIG. 12 is a schematic structural diagram of a system for video data transmission according to an embodiment of the present invention
  • FIG. 13 is a schematic flowchart of a method for video data transmission according to an embodiment of the present invention
  • FIG. 14 is a schematic flowchart of a method for selecting a video data transmission according to an embodiment of the present invention
  • FIG. 15 is a schematic flowchart of a method for selecting a transmission mode according to an embodiment of the present invention
  • a schematic flowchart of a method for selecting a transmission rate is provided.
  • FIG. 17 is a schematic flowchart of still another method for transmitting video data according to an embodiment of the present invention
  • FIG. 18 is still another video data transmission according to an embodiment of the present invention. Schematic diagram of the method. detailed description
  • the base station 1 is a schematic structural diagram of a base station 1 according to an embodiment of the present invention.
  • the base station 1 includes: a determining module 11, a measurement information transceiver module 12, and a decision module 13;
  • the determining module 11 is configured to: when receiving the selection result information sent by the selecting device and the measurement configuration information used to indicate the channel quality test by the user equipment, determining, according to the selection result, the base station as the primary base station, the selection result And including primary base station information and secondary base station information selected by the selecting device;
  • the determining module 11 may determine, according to the selection result, that the base station is the main At the same time, the determining module 11 can also know that other base stations in the network are auxiliary base stations, and the selection result includes the primary base station information and the secondary base station information selected by the selecting device according to the selection rule.
  • the selection device may be an MME (Mobility Management Entity) network element or an MCE (Multi-cell/Multicast Coordination Entity) network element.
  • the selection rule may be: randomly selecting one of the base stations as the primary base station in the network, and using other base stations in the network as the secondary base station; or selecting, in the network, the base station connected with the largest number of user equipments as the primary base station, And other base stations in the network are used as secondary base stations.
  • the selection means may, according to the PCRF (Policy and Charging Rules Function) network element, send identification information of the user equipment and ECGI (E-UTRAN Cell Global)
  • the Identifier the globally unique cell identifier, searches for the base station corresponding to the user equipment, and sends the identifier information of the user equipment to the corresponding base station, so that each base station can notify the station when collecting the channel quality information of the user equipment.
  • the user equipment indicated by the received identifier information of the user equipment performs measurement, where the identifier information of the user equipment refers to identifier information of the user equipment that requests DASH video data.
  • the unicast service network element may send the known user equipment information to the PCRF network element, so that the PCRF network element can Querying the identifier information and the ECGI of the corresponding user equipment according to the user equipment information, the PCRF network element may query, according to the identifier information of the user equipment and the ECGI, the selection device that the user equipment is located and the identifier of the user equipment The information is sent to the corresponding selection device.
  • the unicast service network element may be a DASH Proxy (DASH Proxy) network element.
  • the DASH Proxy network element sends the network address of the user equipment to the PCRF network element; and then the PCRF network element queries the corresponding user equipment identification information and ECGI according to the network address of the user equipment, and then Determining the MME network element where the user equipment is located according to the identity information of the corresponding user equipment and the ECGI, and then sending the identifier information of the corresponding user equipment and the ECGI to the MME network element by using the serving gateway; the MME network element is configured according to The identification information of all the base stations in the network determines the base station corresponding to the identification information of each user equipment, and sends the identification information of each user equipment to the corresponding base station, so that each base station can know the request DASH connected with itself. What are the user devices for video data?
  • the measurement information transceiver module 12 is configured to send the measurement configuration information to a user equipment and a secondary base station connected to the base station, and receive the feedback from the user equipment and the secondary base station connected to the base station according to the measurement configuration information.
  • the measurement information transceiver module 12 may send the measurement configuration information to a user equipment and a secondary base station connected to the base station.
  • the user equipment connected to the base station may separately measure according to the measurement configuration information.
  • the measurement information transceiver module 12 receives the user equipment connected to the base station The measured channel quality information.
  • the secondary base station may send the measurement configuration information to the user equipments connected to each other, and receive channel quality information uploaded by the respective connected user equipments.
  • the measurement information transceiver module 12 can receive channel quality information uploaded by the secondary base station.
  • the measurement configuration information may include measurement parameters of the channel quality of the user equipment and a measurement period.
  • the measurement parameters of the channel quality of the user equipment may include the channel quality measurement parameter in the unicast transmission mode and the channel quality in the multicast transmission mode.
  • the measurement parameter of the channel quality of the user equipment may include the measurement parameter of the channel quality in the unicast transmission mode when the user equipment does not have the capability of measuring the channel quality information in the multicast transmission mode.
  • the channel quality information includes channel quality information of a user equipment connected to the base station and channel quality information of the user equipment connected to the auxiliary base station; the channel quality information is measured by the user equipment in a unicast transmission mode.
  • SINR Signal to Interference plus Noise Ratio
  • SINR signal and interference plus noise ratio parameter measured by the user equipment in the unicast transmission mode and the multicast transmission mode, respectively.
  • the channel quality information of the user equipment connected to the secondary base station is measured by the user equipment connected to the auxiliary base station according to the measurement configuration information sent by the secondary base station.
  • the base station and each auxiliary base station are interconnected by Mesh (Mesh, Wireless Grid Network).
  • Mesh Mesh, Wireless Grid Network
  • the decision module 13 is configured to generate decision information according to the channel quality information and video service information acquired from the transmission conversion device, and send the decision information to the transmission conversion device to convert the transmission The device notifies the unicast service network element to control video data unicast transmission according to the decision information and/or notify the multicast service network element to control video data multicast transmission;
  • the decision module 13 is configured according to the channel quality information and the slave transmission conversion device.
  • the obtained video service information may generate decision information and transmit the decision information to the transmission conversion device.
  • the decision information includes a transmission mode of the video data and a transmission code rate
  • the transmission conversion device may send the decision information to the unicast service network element and the multicast service network element.
  • the unicast service network element may perform unicast transmission on the corresponding DASH video data at the current transmission code rate according to the transmission mode of the video data included in the decision information and the transmission code rate;
  • the element may perform multicast transmission on the corresponding DASH video data at the current transmission code rate according to the transmission mode of the video data included in the decision information and the transmission code rate.
  • video data with a small number of requested users can be transmitted in a unicast transmission manner; video data with a large number of users requesting at the same time can be transmitted in a multicast transmission manner, for example, MBSFN (Multicast Broadcast) Single Frequency Network (Multicast/Multicast Single Frequency Network) transmission mode.
  • MBSFN Multicast Broadcast
  • Single Frequency Network Multicast/Multicast Single Frequency Network
  • the multicast service network element may be a BM-SC (Broadcast Multicast Service Center) network element.
  • the transmission conversion device is a newly added control management entity for performing unicast and multicast conversion on the DASH service, and the transmission conversion device may be configured in a DASH Proxy network element or a BM-SC network element or a P-GW (PDN). Gateway, public data network gateway) and other entities. Since the transmission conversion device is a new entity, there is no defined interface between the transmission conversion device and the base station for communication.
  • the interface is a pure user interface and is an interface based on an IP (Internet Protocol) network, so that the interface defined between the transmission conversion device and the base station is the same as the interface defined between the multimedia broadcast multicast gateway and the base station.
  • IP Internet Protocol
  • the video service information includes a video data address requested by the user equipment and video code rate level information corresponding to the video data address, and the code rate level information includes at least one code rate corresponding to the video data.
  • the base station may collect video service information in the transmission conversion device, where the transmission conversion device obtains the video service information from a unicast service network element; the unicast service network element forwards the DASH server to the user The unicast service network element parses the media representation description by intercepting to obtain the video service information.
  • the - The transmission conversion device can obtain the video data address url (Uniform Resource Locator) requested by the user equipment sent by the unicast service network element, and the video code rate level information including 688 kbps, 1427 kbps, and 2056 kbps.
  • url Uniform Resource Locator
  • the determining module 13 can generate the foregoing according to the capacity maximization rule, the channel quality information, and the video service information obtained from the transmission conversion device. Decision information.
  • the decision module 13 can be based on the capacity maximization rule, the channel quality information, the channel quality of the base station in the multicast transmission mode, and the slave transmission conversion device.
  • the obtained video service information generates the decision information.
  • the user equipment coverage of the base station in the multicast transmission mode exceeds a preset coverage threshold, for example, the base station covers 95% of the multicast transmission.
  • the channel quality of the user equipment transmitted in the manner is used as the reference signal to noise ratio of the multicast.
  • the capacity maximization rule refers to that the number of users who can obtain video services within a certain network resource reaches the maximum value that the current network resource can support, and at the same time, the video service quality obtained by the user reaches the current network resource.
  • the maximum value supported; the capacity maximization rule can be set according to the total resource size consumed and the PSNR (Peak Signal-to-Noise Ratio), that is, the capacity maximization rule can obtain the video.
  • the number of users of the service and the quality of the video service are balanced, so that the number of users and the quality of the video service are simultaneously maximized. When the transmission rate is selected, more users can obtain better quality video services according to the capacity maximization rule.
  • FIG. 2 is a schematic structural diagram of a decision module 13 according to an embodiment of the present invention.
  • the decision module 13 may include: a transmission mode selection unit 131, a transmission code rate selection unit 132, and a decision sending unit 133. ;
  • the transmission mode selection unit 131 is configured to select a transmission mode of the video data according to the channel quality information and the video service information acquired from the transmission conversion device;
  • the transmission mode selection unit 131 may select a transmission mode of the video data according to the channel quality information and the video service information acquired from the transmission conversion device.
  • the transmission mode selection unit 131 may separately calculate video data in unicast according to the channel quality information. - The total resources consumed in the transmission mode, and the total resources consumed by the video data in the multicast transmission mode, and the transmission mode selection unit 131 selects the smaller total resource consumed as the transmission mode of the video data.
  • the transmission code rate selection unit 132 is configured to select a transmission code rate of the video data according to the channel quality information and the video service information acquired from the transmission conversion device;
  • the transmission code rate selection unit 132 may perform the video service according to the capacity maximization rule, the channel quality information, and the video service obtained from the transmission conversion device. The information selects the transmission bit rate of the video data. First, the transmission rate selecting unit 132 may separately calculate, according to the channel quality information, a unit consumption resource corresponding to each code rate in the video rate level information in each selected video mode in the selected transmission mode. Then, the transmission rate selecting unit 132 may select a transmission code rate of a transmission mode corresponding to each video data according to a video quality PSNR corresponding to each DASH code rate in each video data and a corresponding consumed unit consumption resource. The transmission rate selection unit 132 selects the transmission rate as the target of: serving the service or user that brings a larger RSNR on each RB as much as possible.
  • the decision sending unit 133 is configured to send, to the transmission conversion device, decision information carrying a transmission mode of the video data and a transmission code rate of the video data;
  • the decision sending unit 133 may carry the transmission mode of the video data and The decision information of the transmission code rate of the video data is sent to the transmission conversion device, so that the transmission conversion device can transmit the decision information to the unicast service network element and the multicast service network element.
  • the unicast service network element may perform unicast transmission on the corresponding DASH video data at the current transmission code rate according to the transmission mode of the video data included in the decision information and the transmission code rate;
  • the element may perform multicast transmission on the corresponding DASH video data at the current transmission code rate according to the transmission mode of the video data included in the decision information and the transmission code rate.
  • video data with a small number of requested users can be transmitted in a unicast transmission manner; video data with a large number of users requesting at the same time can be transmitted in a multicast transmission manner, for example, in an MBSFN transmission manner.
  • this transmission method can save frequency resources and improve - - Spectrum utilization, enabling DASH services to make better use of wireless resources such as network bandwidth.
  • the channel quality information may include a signal to interference plus noise ratio (signal to interference plus noise ratio) parameter measured by the user equipment in the unicast transmission mode, and the user equipment is in the group.
  • the channel quality information includes a signal and interference plus noise ratio parameter measured by the user equipment in a unicast transmission mode, and a channel quality of the base station in a multicast transmission mode, where the base station is in a multicast transmission mode.
  • User device coverage exceeds the preset coverage threshold.
  • the transmission mode selection unit 131 may include: a reference code rate selection subunit 1311, a resource consumption calculation subunit. 1312, a transmission mode selection subunit 1313;
  • the reference code rate selection sub-unit 1311 is configured to select, according to the channel quality information, video data in the video code rate level information included in the video service information to satisfy both unicast transmission and multicast transmission.
  • the reference code rate selection sub-unit 1311 may select, according to the channel quality information, video data in the video rate rate information included in the video service information, in both unicast transmission and multicast transmission.
  • the lowest code rate that is satisfied is used as the reference code rate.
  • there are three kinds of code rate levels in the corresponding video bit rate level information which are level 1, level 2, level 3, respectively. If the code rate of level 1 is the video data in unicast transmission and For the lowest bit rate that can be satisfied under multicast transmission, the code rate of level 1 is used as the reference code rate.
  • the consumption resource calculation sub-unit 1312 is configured to calculate a first total resource consumed by the unicast transmission mode at the reference code rate, and calculate a second total consumed by the multicast transmission mode at the reference code rate.
  • the consumption resource calculation sub-unit 1312 may calculate a first total resource consumed by the unicast transmission mode at the reference code rate, and calculate a multicast transmission mode under the reference code rate. The second total resource consumed.
  • the transmission mode selection sub-unit 1313 is configured to compare the first total resource and the first - - two total resources, selecting the transmission mode with the least total resources consumed as the transmission mode of the video data;
  • the transmission mode selection sub-unit 1313 compares, the first total resource consumed by the certain video data in the unicast transmission mode at the reference code rate is compared with the second total resource consumed in the multicast transmission mode. If the transmission mode selection sub-unit 1313 selects a unicast transmission mode to transmit the video data, the transmission mode selection sub-unit 1313 obtains a unicast transmission mode of the certain video data at the reference code rate by comparison. The first total resource consumed is more than the second total resource consumed in the multicast transmission mode, and the transmission mode selection sub-unit 1313 selects the multicast transmission mode to transmit the video data.
  • the channel quality information may include a signal and interference plus noise ratio parameter measured by the user equipment in the unicast transmission mode, and a signal and interference plus noise ratio parameter measured by the user equipment in the multicast transmission mode; or
  • the channel quality information includes a signal and interference plus noise ratio parameter measured by the user equipment in a unicast transmission mode, and a channel quality of the base station in a multicast transmission mode, where the base station is in a multicast transmission mode.
  • User device coverage exceeds the preset coverage threshold.
  • FIG. 4 is a schematic structural diagram of a transmission rate selecting unit 132 according to an embodiment of the present invention.
  • the transmission rate selecting unit 132 may include: a unit consumption calculating subunit 1321 and a ratio calculating subunit. 1322, a ranking traversal sub-unit 1323, a ratio selection sub-unit 1324, a transmission rate selection sub-unit 1325;
  • the unit consumption calculation sub-unit 1321 is configured to separately calculate, according to the channel quality information and the video code rate level information included in the video service information, each video data in a selected transmission mode. a unit consumption resource corresponding to each code rate in the video bit rate level information, where the unit consumption resource is a resource consumed in each time slot;
  • the value of the unit consumption resource in the multicast transmission mode calculated by the unit consumption calculation sub-unit 1321 is equal to the transmission of the unit resource block corresponding to each DASH code rate and the multicast channel quality corresponding to each video data. a ratio of rates, where the multicast channel quality is the smallest multicast channel quality in the channel quality information.
  • the single - the value of the unit consumption resource in the unicast transmission mode calculated by the bit consumption calculation sub-unit 1321 is equal to the sum of the ratio of the code rate to the transmission rate of the unit resource block corresponding to each unicast channel quality, the single The broadcast channel quality is the channel quality of the user equipment requesting the video data in the unicast transmission mode.
  • the ratio calculation sub-unit 1322 is configured to separately calculate a ratio of a peak signal to noise ratio of each video data at each code rate to a corresponding unit consumption resource;
  • the calculated ratio calculated by the ratio calculation sub-unit 1322 is a sum of PSNR peak signal-to-noise ratios of each user equipment at the DASH code rate and each user.
  • the sorting traversal sub-unit 1323 is configured to generate, according to the calculation ratio, a sorting result of each video data corresponding to each code rate, and traverse the sorting result in descending order;
  • the order traversal sub-unit 1323 sorts each video data corresponding to each code rate according to the value of the calculated ratio, and sequentially traverses the sorting result according to the channel quality information.
  • the channel quality information For example, there are video data A, B, and C, respectively, and the code rate levels are 1, 2, and 3, respectively, and the sorting result obtained by the sorting traversal sub-unit 1323 in descending order according to the calculated ratio may be Al.
  • the ratio selection sub-unit 1324 is configured to select a minimum calculation ratio that can satisfy a preset resource condition during the traversal process
  • the preset resource condition is that the resource consumed by the multicast transmission mode is smaller than the first subframe number threshold, and the total resource consumed by the multicast transmission mode and the unicast transmission mode is smaller than the second subframe number threshold.
  • the resource condition is: The total number of multicast RBs is within the selected 6 subframes, and the total number of all RBs is within a range of 1 frame (10 subframes).
  • the ratio selection sub-unit 1324 may select a minimum calculation ratio that satisfies a preset resource condition during the traversal process.
  • the sorting result obtained by the sorting traversal sub-unit 1323 in descending order according to the calculated ratio may be Al.
  • the transmission rate selection sub-unit 1325 is configured to respectively select a current maximum transmission code rate corresponding to each video data according to the video data corresponding to the minimum calculation ratio that can satisfy the preset resource condition.
  • the transmission rate selection sub-unit 1325 may select the current maximum transmission code rate corresponding to each video data according to the video data corresponding to the minimum calculation ratio that can satisfy the preset resource condition.
  • the calculation ratio corresponding to the current maximum transmission code rate of each video data is greater than or equal to the minimum calculation ratio that can satisfy the preset resource condition.
  • the code rate levels are 1, 2, and 3, respectively
  • the sorting results obtained according to the calculated ratio in descending order may be Al, A2, B l , C1 , A3, C2, C3, B3, if there are 3 user equipments corresponding to B video data, and A video data is transmitted by multicast, B video data is transmitted by unicast, and C video data is transmitted by multicast, when B 1 is satisfied
  • the resource rate selection sub-unit 1325 selects the transmission code rate level of the A video data to be 2; for the B video data, the transmission rate selection sub-unit 1325 can transmit the user equipment corresponding to the B video data.
  • the code rate level is set to 2, or the ratio of the PSNR to the unit consumption resource corresponding to the three code rate levels of the three user equipments corresponding to the B video data may be firstly sorted, as assuming three user equipments respectively.
  • the sorting result may be al, bl, cl, a2, b2, c2, a3, b3, c3, and then the transmission rate selection sub-unit 1325 traverses the sorting result, when b2 is detected Meet resource conditions and c2 does not
  • the transmission rate selection sub-unit 1325 may set the code rate level of the user equipment a to 2, set the code rate level of the user equipment b to 2, and set the code rate level of the user equipment c to 1; If the resource does not meet the demand until C2, because the C video data is transmitted by multicast, the transmission rate of the user equipment of all C video data can only meet the transmission code rate of level 1, all A video.
  • the transmission code rate of the user equipment of the data can satisfy the
  • the unit consumption calculation sub-unit 1321, the ratio calculation sub-unit 1322, the ranking traversal sub-unit 1323, the ratio selection sub-unit 1324, and the transmission rate selection sub-unit 1325 perform all processes based on the capacity maximization rule. Passing through the capacity maximization rule - - The choice of the transmission rate allows more users to get better quality video services.
  • the channel quality information and the video service information of the user equipment are collected, and the decision information is generated according to the capacity maximization rule, so that the unicast service network element and the multicast service network element can be determined according to the decision information.
  • the DASH service with unicast and multicast hybrid transmission mode can better utilize wireless resources such as network bandwidth and provide better video quality for users. To meet the needs of various users.
  • FIG. 5 is a schematic structural diagram of another base station 1 according to an embodiment of the present invention.
  • the base station 1 may include the determining module 11, the measurement information transceiver module 12, and the decision module 13 in the foregoing embodiment of FIG. Further, the base station 1 may further include: a video information acquiring module 14, an updating module 15, and an identification information sending module 16;
  • the video information obtaining module 14 is configured to obtain video service information from a transmission conversion device by using a preset IP network-based interface
  • the video information acquiring module 14 may obtain video service information from the transmission conversion device by using a preset IP network-based interface, where the IP network-based interface is used to connect the base station and the transmission.
  • the interface of the conversion device Since the transmission conversion device is a newly added entity, there is no defined interface between the transmission conversion device and the base station for communication. Therefore, reference may be made to an interface between the existing multimedia broadcast multicast gateway and the base station, The interface is a pure user interface and is an IP network-based interface, so that the interface defined between the transmission conversion device and the base station is the same as the interface defined between the multimedia broadcast multicast gateway and the base station.
  • the video service information includes a video data address requested by the user equipment and video code rate level information corresponding to the video data address, and the code rate level information includes at least one code rate corresponding to the video data.
  • the video information obtaining module 14 may collect video service information in the transmission conversion device, where the transmission conversion device obtains the video service information from a unicast service network element; the unicast service network element is forwarded When the DASH server sends a description of the media that the user equipment replies to, the unicast service network element parses the media representation description by intercepting to obtain the video service information.
  • the transmission conversion device may acquire the video data address url requested by the user equipment sent by the unicast service network element and the video code rate level information including 688 kbps, 1427 kbps, and 2056 kbps.
  • the update module 15 is configured to: when the measurement time interval reaches the measurement period included in the measurement configuration information, receive updated channel quality information, and update the decision information to update the video data. Transmission rate
  • the update module 15 may re-collect channel quality information by using the user equipment and the secondary base station corresponding to the local base station, so that the The update module 15 may receive the updated channel quality information, and update the decision information according to the updated channel quality information, so that the DASH video data can obtain the updated transmission code rate in the next moment.
  • the identification information sending module 16 is configured to send the primary base station identification information to the transmission conversion device, so that the transmission conversion device determines that the base station is the primary base station according to the primary base station identification information; When the determining module 11 receives the selection result, the identification information transmitting module 16 may send the primary base station identification information to the transmission conversion device, so that the transmission conversion device can know according to the primary base station identification information.
  • a base station is the primary base station so that the subsequent transmission conversion means can communicate with the primary base station.
  • the channel quality information and the video service information of the user equipment are collected, and the decision information is generated according to the capacity maximization rule, so that the unicast service network element and the multicast service network element can be determined according to the decision information.
  • the DASH service with unicast and multicast hybrid transmission mode can better utilize wireless resources such as network bandwidth and provide better video quality for users. To meet the needs of various users.
  • FIG. 6 is a schematic structural diagram of another base station 1 according to an embodiment of the present invention.
  • the base station 1 may include a processor 1001, a communication interface 1002, and a memory 1003.
  • the number of processors 1001 in the base station 1 may be One or more, one processor 1001 is taken as an example in FIG. 6).
  • the processor 1001, the communication interface 1002, and the memory 1003 may be connected by a communication bus or other means, wherein FIG. 6 is exemplified by a communication bus connection.
  • the communication interface 1002 is configured to communicate with a transmission conversion device, a selection device, a user equipment, and a secondary base station;
  • the memory 1003 is configured to store a program
  • the processor 1001 is configured to execute the program to implement When receiving the selection result information sent by the selecting device and the measurement configuration information indicating that the user equipment performs the channel quality test, determining, according to the selection result, the base station is the primary base station, and the selection result includes the selecting device selection Primary base station information and secondary base station information;
  • the broadcast service network element controls video data unicast transmission and/or notifies the multicast service network element to control video data multicast transmission;
  • the decision information includes a transmission mode of the video data and a transmission code rate.
  • the processor 1001 is further configured to:
  • the video service information includes a video data address requested by the user equipment and video rate rate information corresponding to the video data address, where The code rate level information includes at least one code rate corresponding to the video data;
  • the IP network-based interface is an interface for connecting the base station and the transmission conversion device.
  • the channel quality information of the user equipment connected to the secondary base station is measured by the user equipment connected to the auxiliary base station according to the measurement configuration information sent by the secondary base station.
  • the processor 1001 is specifically configured to:
  • the processor 1001 is specifically configured to:
  • a transmission mode in which the total resource consumed is selected is selected as a transmission mode of the video data.
  • the processor 1001 is specifically configured to:
  • the calculation ratio corresponding to the current maximum transmission code rate of each video data is greater than or equal to the minimum calculation ratio that can satisfy the preset resource condition
  • the preset resource condition is that the resource consumed by the multicast transmission mode is smaller than the first subframe number threshold, and the total resources consumed by the multicast transmission mode and the unicast transmission mode are smaller than the second subframe number threshold.
  • the channel quality information includes a signal measured by the user equipment in a unicast transmission mode. - - the disturbance-to-noise ratio (SINR) parameter, and the signal-to-interference plus noise ratio parameter measured by the user equipment in the multicast transmission mode; or
  • the channel quality information includes a signal and interference plus noise ratio parameter measured by the user equipment in a unicast transmission mode, and a channel quality of the base station in a multicast transmission mode, where the base station is in a multicast transmission mode.
  • User device coverage exceeds the preset coverage threshold.
  • the processor 1001 is further configured to:
  • the updated channel quality information is received, and the decision information is updated to update the transmission code rate of the video data.
  • the processor 1001 is further configured to:
  • the channel quality information and the video service information of the user equipment are collected, and the decision information is generated according to the capacity maximization rule, so that the unicast service network element and the multicast service network element can be determined according to the decision information.
  • the DASH service with unicast and multicast hybrid transmission mode can better utilize wireless resources such as network bandwidth and provide better video quality for users. To meet the needs of various users.
  • FIG. 7 is a schematic structural diagram of a transmission conversion apparatus 2 according to an embodiment of the present invention.
  • the transmission conversion apparatus 2 may include: an acquisition module 21, a video information sending module 22, and a decision information receiving module 23;
  • the obtaining module 21 is configured to obtain video service information of a unicast service network element.
  • the video service information includes a video data address requested by the user equipment and video code rate level information corresponding to the video data address, where the code rate level information includes at least one code rate corresponding to the video data.
  • the obtaining module 21 may obtain the video service information from a unicast service network element.
  • the unicast service network element forwards the media representation description replied to the user equipment by the DASH server, the unicast service network element may parse the media representation description by intercepting to obtain the video service information.
  • the transmission conversion device 2 can obtain the video data address url requested by the user equipment sent by the unicast service network element and includes 688 kbps, 1427 kbps, 2056 kbps. - - Video rate rating information.
  • the video information sending module 22 is configured to send the video service information to the base station, so that the base station generates, according to the video service information, the obtained channel quality information of each user equipment, the base station is a primary base station selected by the selection device;
  • the video information sending module 22 may send the video service information to the base station by using a preset IP network-based interface, where the video service information includes the level information requested by the user equipment, including the video data. At least one code rate; wherein the IP network-based interface is an interface for connecting the base station and the transmission conversion device 2.
  • the transmission conversion device 2 Since the transmission conversion device 2 is a new entity, there is no defined interface between the transmission conversion device 2 and the base station for communication. Therefore, reference may be made to the interface between the existing multimedia broadcast multicast gateway and the base station.
  • the interface is a pure user interface and is an IP network-based interface, so that the interface defined between the transmission conversion device 2 and the base station is the same as the interface defined between the multimedia broadcast multicast gateway and the base station.
  • the base station may generate decision information according to the video service information, the obtained channel quality information of each user equipment, and a capacity maximization rule.
  • the base station may generate decision information according to the video service information, the obtained channel quality information of each user equipment, and a capacity maximization rule.
  • the decision information receiving module 23 is configured to receive the decision information sent by the base station, and send the decision information to the unicast service network element and the multicast service network element respectively, so that the unicast The service network element and the multicast service network element respectively control video data unicast transmission and control video data multicast transmission;
  • the decision information receiving module 23 may receive the decision information sent by the base station, and send the decision information to the unicast service network element and
  • the multicast service network element is configured to enable the unicast service network element and the multicast service network element to separately control video data unicast transmission and control video data multicast transmission.
  • the decision information includes a transmission mode of the video data and a transmission code rate of the video data.
  • the unicast service network element may be determined according to the decision - - the transmission mode of the video data included in the information and the transmission code rate, unicast transmission of the corresponding DASH video data at the current transmission code rate; the multicast service network element may be based on the transmission of the video data included in the decision information
  • the mode and the transmission code rate are used for multicast transmission of the corresponding DASH video data at the current transmission code rate. For example, video data with a small number of requested users can be transmitted in a unicast transmission manner; video data with a large number of users requesting at the same time can be transmitted in a multicast transmission manner, for example, in an MBSFN transmission manner. Transmission, this transmission mode can save frequency resources and improve spectrum utilization, so that DASH services can better utilize wireless resources such as network bandwidth.
  • the unicast service network element may be a DASH Proxy network element
  • the multicast service network element may be a BM-SC network element.
  • the transmission conversion device 2 is a newly added control management entity for performing unicast and multicast conversion on the DASH service, and the transmission conversion device 2 can be configured in a DASH Proxy network element or a BM-SC network element or a P-GW. In the entity.
  • the channel quality information and the video service information of the user equipment are collected, and the decision information is generated according to the capacity maximization rule, so that the unicast service network element and the multicast service network element can be determined according to the decision information.
  • the DASH service with unicast and multicast hybrid transmission mode can better utilize wireless resources such as network bandwidth and provide better video quality for users. To meet the needs of various users.
  • FIG. 8 is a schematic structural diagram of another transmission conversion apparatus 2 according to an embodiment of the present invention.
  • the transmission conversion apparatus 2 may include a processor 2001, a communication interface 2002, and a memory 2003 (a processor in a transmission conversion apparatus).
  • the number of 2001 may be one or more, and one processor 2001 is taken as an example in FIG.
  • the processor 2001, the communication interface 2002, and the memory 2003 may be connected by a communication bus or other means, wherein FIG. 8 is exemplified by a communication bus connection.
  • the communication interface 2002 is configured to communicate with a base station, a unicast service network element, and a multicast service network element.
  • the memory 2003 is used to store a program
  • the processor 2001 is configured to execute the program to implement
  • the unit controls video data unicast transmission and controls video data multicast transmission separately.
  • the processor 2001 is specifically configured to:
  • the video service information is sent to the base station by using a preset IP network-based interface, where the video service information includes a video data address requested by the user equipment and video rate rate information corresponding to the video data address, where
  • the code rate level information includes at least one code rate corresponding to the video data;
  • the IP network-based interface is an interface for connecting the base station and the transmission conversion device 2.
  • the decision information includes a transmission mode of the video data and a transmission code rate of the video data. It can be seen that, in the embodiment of the present invention, the channel quality information and the video service information of the user equipment are collected, and the decision information is generated according to the capacity maximization rule, so that the unicast service network element and the multicast service network element can be determined according to the decision information. Control the corresponding DASH video data separately for unicast transmission or multicast transmission. Therefore, the DASH service with unicast and multicast hybrid transmission mode can better utilize wireless resources such as network bandwidth and provide better video quality for users. To meet the needs of various users.
  • FIG. 9 is a schematic structural diagram of a selection device 3 according to an embodiment of the present invention.
  • the selection device 3 may include: a selection result generation module 31, a selection result sending module 32;
  • the selection result generating module 31 is configured to select a primary base station and a secondary base station, and generate a selection result, where the selection result includes primary base station information and secondary base station information;
  • the selecting device 3 may be an MME network element or an MCE network element.
  • the selection result generation module 31 may select a primary base station and a secondary base station, and generate a selection result, the selection result including primary base station information and secondary base station information.
  • the selection result generating module 31 may include: a first selecting unit, configured to be random in the network - selecting one of the base stations as the primary base station and using the other base stations in the network as the secondary base station; the second selecting unit is configured to select, in the network, the base station to which the maximum number of user equipments is connected as the primary base station, and The other base stations in the network serve as the secondary base station, and the third selection unit is configured to select the base station with the best hardware performance as the primary base station in the network, and use other base stations in the network as the secondary base station.
  • the selection result sending module 32 is configured to send the selection result and measurement configuration information used to indicate that the user equipment performs channel quality testing to the base station, so that the base station acquires channel quality according to the selection result and the measurement configuration information.
  • the selection result sending module 32 may further generate measurement configuration information, where the measurement configuration information includes measurement parameters for channel quality of unicast and multicast, or only measurement parameters for channel quality of unicast, the measurement The configuration information may also include a measurement period.
  • the selection result sending module 32 may send the selection result and the measurement configuration information to the base station, so that the base station acquires channel quality information according to the selection result and the measurement configuration information to generate a unicast transmission for the video data.
  • the base station generates the decision information according to the video service information acquired from the transmission conversion device, the obtained channel quality information of each user equipment, and the capacity maximization rule, and The decision information is separately sent to the unicast service network element and the multicast service network element, so that the unicast service network element and the multicast service network element respectively control video data unicast transmission and control video data group Broadcast transmission.
  • the base station that receives the selection result is a base station corresponding to the primary base station information in the selection result.
  • the channel quality information and the video service information of the user equipment are collected, and the decision information is generated according to the capacity maximization rule, so that the unicast service network element and the multicast service network element can be determined according to the decision information.
  • the DASH service with unicast and multicast hybrid transmission mode can better utilize wireless resources such as network bandwidth and provide better video quality for users. To meet the needs of various users.
  • FIG. 10 is a schematic structural diagram of another selection device 3 according to an embodiment of the present invention.
  • the selection device 3 may include a selection result generation module 31 and a selection result sending module 32 in the corresponding embodiment of FIG. Further, the selecting device 3 may further include: identifier information receiving - - module 33, lookup sending module 34;
  • the identifier information receiving module 33 is configured to receive the identifier information and the ECGI of the user equipment corresponding to the selection device 3 sent by the policy and charging rule function (PCRF) network element;
  • PCRF policy and charging rule function
  • the search and send module 34 is configured to search for a base station corresponding to the user equipment according to the identifier information of the user equipment and the ECGI, and send the identifier information of the user equipment to the corresponding base station.
  • the identifier information receiving module 33 may receive the identifier information and the ECGI of the user equipment corresponding to the selection device 3 sent by the PCRF policy and the charging rule function network element. And the search sending module 34 searches for the base station corresponding to the user equipment according to the identifier information of the user equipment and the ECGI, and sends the identifier information of the user equipment to the corresponding base station, so that each base station collects
  • the user equipment indicated by the received identifier information of the user equipment may be notified, where the identifier information of the user equipment refers to the identifier information of the user equipment that requests the DASH video data. .
  • the identification information and the ECGI of the user equipment are found by the PCRF policy and the charging rule function network element according to the network address of the user equipment sent by the unicast service network element.
  • the unicast service network element may send the known user equipment information to the PCRF network element, so that the PCRF The network element may query the identifier information and the ECGI of the corresponding user equipment according to the user equipment information, and the PCRF network element may query the selection device 3 that the user equipment is located according to the identifier information of the user equipment and the ECGI, and the The identification information of the user equipment is sent to the corresponding selection device 3.
  • the unicast service network element may be a DASH Proxy network element.
  • the DASH Proxy network element sends the network address of the user equipment to the PCRF network element; and then the PCRF network element queries the corresponding user equipment identification information and ECGI according to the network address of the user equipment, and then Determining the MME network element where the user equipment is located according to the identity information of the corresponding user equipment and the ECGI, and then transmitting the identifier information of the corresponding user equipment and the ECGI to the MME network element by using the monthly service gateway;
  • the identification information receiving module 33 in the element is based on The identification information of all the base stations in the network determines the base stations corresponding to the identification information of each user equipment, and sends the identification information of each user equipment to the corresponding base stations.
  • the channel quality information and the video service information of the user equipment are collected, and the decision information is generated according to the capacity maximization rule, so that the unicast service network element and the multicast service network element can be determined according to the decision information.
  • the DASH service with unicast and multicast hybrid transmission mode can better utilize wireless resources such as network bandwidth and provide better video quality for users. To meet the needs of various users.
  • FIG. 11 is a schematic structural diagram of still another selection device 3 according to an embodiment of the present invention.
  • the selection device 3 may include a processor 3001, a communication interface 3002, and a memory 3003 (selection of the processor 3001 in the device 3)
  • the number can be one or more, as shown in Figure 11 by a processor 3001.
  • the processor 3001, the communication interface 3002, and the memory 3003 may be connected by a communication bus or other means, wherein FIG. 11 is exemplified by a communication bus connection.
  • the communication interface 3002 is configured to communicate with a PCRF policy and charging rule function network element and a base station;
  • the memory 3003 is configured to store a program
  • the processor 3001 is configured to execute the program to implement
  • the base station generates decision information according to the channel quality information and the video service information acquired from the transmission conversion device, and sends the generated decision information to the transmission conversion device, so that the transmission conversion device according to the decision
  • the information notification unicast service network element controls video data unicast transmission and/or notifies the multicast service network element to control video data multicast transmission.
  • the base station that receives the selection result is a base station corresponding to the primary base station information in the selection result.
  • the processor 3001 is specifically configured to: - - randomly selecting one of the base stations as the primary base station in the network and using other base stations in the network as the secondary base station; or
  • the base station with the best hardware performance is selected as the primary base station in the network, and other base stations in the network are used as the secondary base station.
  • the processor 3001 is further configured to:
  • the identification information and the ECGI of the user equipment are found by the PCRF policy and the charging rule function network element according to the network address of the user equipment sent by the unicast service network element.
  • the channel quality information and the video service information of the user equipment are collected, and the decision information is generated according to the capacity maximization rule, so that the unicast service network element and the multicast service network element can be determined according to the decision information.
  • the DASH service with unicast and multicast hybrid transmission mode can better utilize wireless resources such as network bandwidth and provide better video quality for users. To meet the needs of various users.
  • FIG. 12 is a schematic structural diagram of a system for video data transmission according to an embodiment of the present invention.
  • the system may include: a base station 4001, a transmission conversion device 4002, and a selection device 4003.
  • a base station 4001, a transmission conversion device 4002, and a selection The device 4003 can communicate with each other through a wireless network, where the base station 4001 is specifically the base station of any of the embodiments shown in FIG. 1 to FIG. 6, and the transmission conversion device 4002 is specifically shown in any of FIG. 7-8.
  • the selection device 4003 is specifically the selection device of the embodiment shown in any of Figures 9-11.
  • the channel quality information and the video service information of the user equipment are collected, and the decision information is generated according to the capacity maximization rule, so that the unicast service network element and the multicast service network element can be determined according to the decision information.
  • FIG. 13 is a schematic flowchart of a method for video data transmission according to an embodiment of the present invention, where the method includes:
  • the base station determines, according to the selection result, the local base station is the primary base station, and the selection result includes the Specifically, when the base station receives the selection result information and the measurement configuration information sent by the selecting device, the base station determines, according to the selection result, the base station as the primary base station, and simultaneously
  • the base station may also know that other base stations in the network are auxiliary base stations, and the selection result includes primary base station information and secondary base station information selected by the selecting apparatus according to the selection rule.
  • the selection device may be an MME network element or an MCE network element.
  • the selection rule may be: randomly selecting one of the base stations as the primary base station in the network, and using other base stations in the network as the secondary base station; or selecting, in the network, the base station connected with the largest number of user equipments as the primary base station, And other base stations in the network are used as secondary base stations.
  • the selecting device may search for the base station corresponding to the user equipment according to the identifier information of the user equipment and the ECGI sent by the PCRF network element, and send the identifier information of the user equipment to Corresponding base stations, when the base station collects channel quality information of the user equipment, may notify the user equipment indicated by the received identifier information of the user equipment to perform measurement, where the identifier information of the user equipment refers to the request. Identification information of the user equipment of the DASH video data.
  • the unicast service network element may send the known user equipment information to the PCRF network element, so that the PCRF network element can Querying the identifier information and the ECGI of the corresponding user equipment according to the user equipment information, the PCRF network element may query, according to the identifier information of the user equipment and the ECGI, the selection device that the user equipment is located and the identifier of the user equipment The information is sent to the corresponding selection device.
  • the unicast service network element may be a DASH Proxy network element.
  • the DASH Proxy - the network element sends the network address of the user equipment to the PCRF network element; the PCRF network element then queries the corresponding user equipment identification information and ECGI according to the network address of the user equipment, and then according to the corresponding user
  • the identification information of the device and the ECGI determine the MME network element where the user equipment is located, and then send the identification information of the corresponding user equipment and the ECGI to the MME network element by using the serving gateway; the MME network element is based on all base stations in the network.
  • the identification information determines the base station corresponding to the identification information of each user equipment, and sends the identification information of each user equipment to the corresponding base station.
  • the base station sends the measurement configuration information to the user equipment and the secondary base station connected to the local base station, and receives the user equipment connected to the local base station and the auxiliary base station to connect with the secondary base station according to the measurement configuration information.
  • Channel quality information of the user equipment
  • the measurement configuration information may include a measurement parameter of the channel quality of the user equipment and a measurement period.
  • the measurement parameters of the channel quality of the user equipment may include the channel quality measurement parameter in the unicast transmission mode and the channel quality in the multicast transmission mode.
  • the measurement parameter of the channel quality of the user equipment may include the measurement parameter of the channel quality in the unicast transmission mode when the user equipment does not have the capability of measuring the channel quality information in the multicast transmission mode.
  • the base station may send the measurement configuration information to a user equipment and a secondary base station connected to the base station.
  • the user equipment connected to the local base station may separately measure the channel quality in the unicast transmission mode and the multicast transmission mode according to the measurement configuration information. The channel quality is measured, or only the channel quality in the unicast transmission mode is measured, and the user equipment connected to the base station transmits the measured channel quality information to the base station.
  • the secondary base station may send the measurement configuration information to the user equipments connected to each other, and receive channel quality information uploaded by the respective connected user equipments. The secondary base station then sends the uploaded channel quality information back to the base station.
  • the channel quality information includes channel quality information of a user equipment connected to the base station and channel quality information of the user equipment connected to the auxiliary base station; the channel quality information is measured by the user equipment in a unicast transmission mode.
  • SINR or user equipment in unicast transmission mode and multicast - - SINR signal and interference plus noise ratio parameters measured in transmission mode.
  • the channel quality information of the user equipment connected to the secondary base station is measured by the user equipment connected to the auxiliary base station according to the measurement configuration information sent by the secondary base station.
  • the base station and each of the auxiliary base stations communicate through the Mesh interconnection.
  • the base station generates decision information according to the channel quality information and video service information acquired from the transmission conversion device, and sends the decision information to the transmission conversion device. Specifically, the base station according to the The channel quality information and the video service information acquired from the transmission conversion device may generate decision information and transmit the decision information to the transmission conversion device.
  • the decision information includes a transmission mode of the video data and a transmission code rate, and the transmission conversion device may send the decision information to the unicast service network element and the multicast service network element.
  • the unicast service network element may perform unicast transmission on the corresponding DASH video data at the current transmission code rate according to the transmission mode of the video data included in the decision information and the transmission code rate;
  • the element may perform multicast transmission on the corresponding DASH video data at the current transmission code rate according to the transmission mode of the video data included in the decision information and the transmission code rate.
  • video data with a small number of requested users can be transmitted in a unicast transmission manner; video data with a large number of users requesting at the same time can be transmitted in a multicast transmission manner, for example, in an MBSFN transmission manner. Transmission, this transmission mode can save frequency resources and improve spectrum utilization, so that DASH services can better utilize wireless resources such as network bandwidth.
  • the base station determines a transmission code rate according to a capacity maximization rule, where the capacity maximization rule refers to allowing a number of users who can obtain a video service to reach a maximum value that can be supported by the current network resource within a certain network resource, and simultaneously The quality of the video service obtained by the user is up to the maximum value that the current network resource can support; the capacity maximization rule can be set according to the total resource size consumed and the video quality PSNR, that is, the capacity maximization rule can obtain the video service.
  • the number of users and the quality of video services are balanced, so that the number of users and the quality of video services reach the maximum at the same time. When the transmission code rate is selected, more users can obtain better quality video services according to the capacity maximization rule.
  • the multicast service network element may be a BM-SC network element.
  • the transmission conversion device is a newly added control management entity for performing unicast and multicast conversion on the DASH service, and the transmission conversion device may be disposed in a DASH Proxy network element or a BM-SC network element or a P-GW entity. in. Since the transmission conversion device is a new entity, there is no defined interface between the transmission conversion device and the base station for communication. Therefore, reference may be made to an interface between the existing multimedia broadcast multicast gateway and the base station.
  • the interface is a pure user interface and is an IP network-based interface, so that the interface defined between the transmission conversion device and the base station is the same as the interface defined between the multimedia broadcast multicast gateway and the base station.
  • the video service information includes a video data address requested by the user equipment and video code rate level information corresponding to the video data address, and the code rate level information includes at least one code rate corresponding to the video data.
  • the base station may collect video service information in the transmission conversion device, where the transmission conversion device obtains the video service information from a unicast service network element; the unicast service network element forwards the DASH server to the user
  • the unicast service network element parses the media representation description by intercepting to obtain the video service information.
  • the transmission conversion device may acquire the video data address url requested by the user equipment sent by the unicast service network element and the video code rate level information including 688 kbps, 1427 kbps, and 2056 kbps.
  • the base station can generate the decision information according to the capacity maximization rule, the channel quality information, and the video service information acquired from the transmission conversion device. .
  • the base station can obtain the channel quality according to the capacity maximization rule, the channel quality information, the channel quality of the base station in the multicast transmission mode, and the transmission conversion device.
  • the video service information generates the decision information.
  • the user equipment coverage of the base station in the multicast transmission mode exceeds a preset coverage threshold. For example, the base station performs coverage by 95% in multicast transmission mode.
  • the channel quality of the transmitted user equipment is used as the reference signal to noise ratio of the multicast.
  • the channel quality information and the video service information of the user equipment are collected, and the decision information is generated according to the capacity maximization rule, so that the unicast service network element and the multicast service network element can be determined according to the decision information.
  • - - Use wireless resources such as network bandwidth and provide users with better video quality to meet the needs of various users.
  • FIG. 14 is a schematic flowchart of another method for video data transmission according to an embodiment of the present invention, where the method includes:
  • the base station determines, according to the selection result, the local base station as the primary base station;
  • the base station determines that the base station is the primary base station according to the selection result, and the base station may also know that other base stations in the network are auxiliary base stations.
  • the selection result includes primary base station information and secondary base station information selected by the selection device according to the selection rule.
  • the selection device may be an MME network element or an MCE network element.
  • the selection rule may be: randomly selecting one of the base stations as the primary base station in the network, and using other base stations in the network as the secondary base station; or selecting, in the network, the base station connected with the largest number of user equipments as the primary base station, And other base stations in the network are used as secondary base stations.
  • the selecting device may search for the base station corresponding to the user equipment according to the identifier information of the user equipment and the ECGI sent by the PCRF network element, and send the identifier information of the user equipment to Corresponding base stations, when the base station collects channel quality information of the user equipment, may notify the user equipment indicated by the received identifier information of the user equipment to perform measurement, where the identifier information of the user equipment refers to the request. Identification information of the user equipment of the DASH video data.
  • the unicast service network element may send the known user equipment information to the PCRF network element, so that the PCRF network element can Querying the identifier information and the ECGI of the corresponding user equipment according to the user equipment information, the PCRF network element may query, according to the identifier information of the user equipment and the ECGI, the selection device that the user equipment is located and the identifier of the user equipment The information is sent to the corresponding selection device.
  • the unicast service network element may be a DASH Proxy network element.
  • the DASH Proxy network element sends the network address of the user equipment to the PCRF network element; and then the PCRF network element queries the corresponding user equipment identification information and ECGI according to the network address of the user equipment, and then According to the right Determining the identity information of the user equipment and the ECGI to determine the MME network element in which the user equipment is located, and then transmitting, by the serving gateway, the identification information of the corresponding user equipment and the ECGI to the MME network element; the MME network element
  • the base station corresponding to the identifier information of each user equipment is determined according to the identifier information of all the base stations in the network, and the identifier information of each user equipment is sent to the corresponding base station.
  • the base station sends the measurement configuration information to a user equipment and a secondary base station that are connected to the base station, and receives the user equipment and the secondary base station connected to the base station, and the secondary base station is connected according to the measurement configuration information.
  • Channel quality information of the user equipment
  • the measurement configuration information may include a measurement parameter of the channel quality of the user equipment and a measurement period.
  • the measurement parameters of the channel quality of the user equipment may include the channel quality measurement parameter in the unicast transmission mode and the channel quality in the multicast transmission mode.
  • the measurement parameter of the channel quality of the user equipment may include the measurement parameter of the channel quality in the unicast transmission mode when the user equipment does not have the capability of measuring the channel quality information in the multicast transmission mode.
  • the base station may send the measurement configuration information to a user equipment and a secondary base station connected to the base station.
  • the user equipment connected to the local base station may separately measure the channel quality in the unicast transmission mode and the multicast transmission mode according to the measurement configuration information. The channel quality is measured, or only the channel quality in the unicast transmission mode is measured, and the user equipment connected to the base station transmits the measured channel quality information to the base station.
  • the secondary base station may send the measurement configuration information to the user equipments connected to each other, and receive channel quality information uploaded by the respective connected user equipments. The secondary base station then sends the uploaded channel quality information back to the base station.
  • the channel quality information includes channel quality information of a user equipment connected to the base station and channel quality information of the user equipment connected to the auxiliary base station; the channel quality information is measured by the user equipment in a unicast transmission mode.
  • the SINR signal and the interference plus noise ratio parameter, or the SINR signal and the interference plus noise ratio parameter respectively measured by the user equipment in the unicast transmission mode and the multicast transmission mode.
  • the channel quality information of the user equipment connected to the secondary base station is measured by the user equipment connected to the secondary base station according to the measurement configuration information sent by the secondary base station.
  • the base station acquires video service information from a transmission conversion device by using a preset IP network-based interface.
  • the base station may obtain video service information from the transmission conversion device by using a preset IP network-based interface, where the IP network-based interface is an interface for connecting the base station and the transmission conversion device. . Since the transmission conversion device is a new entity, there is no defined interface between the transmission conversion device and the base station for communication. Therefore, reference may be made to an interface between the existing multimedia broadcast multicast gateway and the base station, The interface is a pure user plane interface and is an IP network based interface, so that the interface defined between the transmission conversion device and the base station is the same as the interface defined between the multimedia broadcast multicast gateway and the base station.
  • the video service information includes a video data address requested by the user equipment and video code rate level information corresponding to the video data address, and the code rate level information includes at least one code rate corresponding to the video data.
  • the base station may collect video service information in the transmission conversion device, where the transmission conversion device obtains the video service information from a unicast service network element; the unicast service network element forwards the DASH server to the user
  • the unicast service network element parses the media representation description by intercepting to obtain the video service information.
  • the transmission conversion device may acquire the video data address url requested by the user equipment sent by the unicast service network element and the video code rate level information including 688 kbps, 1427 kbps, and 2056 kbps.
  • the base station selects a transmission mode of the video data according to the channel quality information and the video service information acquired from the transmission conversion device.
  • the base station may select a transmission mode of the video data according to the channel quality information and the video service information acquired from the transmission conversion device.
  • the base station may separately calculate, according to the channel quality information, total resources consumed by the video data in the unicast transmission mode, and total resources consumed by the video data in the multicast transmission mode, where the base station selects consumption.
  • the smaller total resource is used as the transmission method of the video data.
  • the base station selects a transmission code rate of the video data according to the channel quality information and the video service information acquired from the transmission conversion device.
  • the base station may select a transmission code rate of the video data according to the capacity maximization rule, the channel quality information, and the video service information acquired from the transmission conversion device.
  • the base station may separately calculate, according to the channel quality information, a unit consumption resource corresponding to each code rate in the video code rate level information of each video data in the selected transmission mode, and then the base station may The transmission code rate of the transmission mode corresponding to each video data is selected according to the video quality PSNR corresponding to each DASH code rate in each video data and the corresponding consumed unit consumption resource.
  • the target of the base station selecting the transmission code rate is: to serve as much as possible the service or user that brings a larger RSNR on each RB.
  • the base station sends, to the transmission conversion device, decision information carrying a transmission mode of the video data and a transmission rate of the video data.
  • the base station may send, to the transmission conversion, decision information carrying a transmission mode of the video data and a transmission code rate of the video data.
  • the transmission conversion means can send the decision information to the unicast service network element and the multicast service network element.
  • the unicast service network element may perform unicast transmission on the corresponding DASH video data at the current transmission code rate according to the transmission mode of the video data included in the decision information and the transmission code rate;
  • the element may perform multicast transmission on the corresponding DASH video data at the current transmission code rate according to the transmission mode of the video data included in the decision information and the transmission code rate.
  • video data with a small number of requested users can be transmitted in a unicast transmission manner; video data with a large number of users requesting at the same time can be transmitted in a multicast transmission manner, for example, in an MBSFN transmission manner.
  • this transmission mode can save frequency resources and improve spectrum utilization, so that DASH services can better utilize wireless resources such as network bandwidth.
  • the channel quality information may include a signal and interference plus noise ratio parameter measured by the user equipment in the unicast transmission mode, and a signal and interference plus noise ratio parameter measured by the user equipment in the multicast transmission mode; or
  • the channel quality information may include - the signal-to-interference plus noise ratio parameter measured by the user equipment in the unicast transmission mode, and the channel quality of the base station in the multicast transmission mode, where the user equipment coverage of the base station in the multicast transmission mode Exceeded the preset coverage threshold.
  • the base station provided by the embodiment of the present invention may further receive the updated channel quality information when the measurement time interval reaches the measurement period included in the measurement configuration information, and update the decision information to update the video data.
  • the base station may re-collect channel quality information by using a user equipment corresponding to the local base station and the secondary base station, so that the base station can receive Up to the updated channel quality information, and updating the decision information according to the updated channel quality information, so that the DASH video data can obtain the updated transmission code rate in the next moment.
  • the base station provided by the embodiment of the present invention may further send the primary base station identification information to the transmission conversion apparatus, so that the transmission conversion apparatus determines that the base station is the primary base station according to the primary base station identification information; specifically, at the base station Upon receiving the selection result, the base station may send the primary base station identification information to the transmission conversion device, so that the transmission conversion device can know which base station is the primary base station according to the primary base station identification information, so that The subsequent transmission conversion means can communicate with the primary base station.
  • the channel quality information and the video service information of the user equipment are collected, and the decision information is generated according to the capacity maximization rule, so that the unicast service network element and the multicast service network element can be determined according to the decision information.
  • the DASH service with unicast and multicast hybrid transmission mode can better utilize wireless resources such as network bandwidth and provide better video quality for users. To meet the needs of various users.
  • FIG. 15 is a schematic flowchart of a method for selecting a transmission mode according to an embodiment of the present invention.
  • the method in the embodiment of the present invention may correspond to S204 in the embodiment corresponding to FIG. 14 .
  • the embodiment of the present invention is described by selecting a transmission mode.
  • the method of the embodiment of the present invention specifically includes:
  • the base station is included in the video service information according to the channel quality information. - - selecting the lowest bit rate that the video data can satisfy under unicast transmission and multicast transmission as the reference code rate in the video bit rate level information;
  • the base station may select, according to the channel quality information, a minimum bit rate that the video data can satisfy under both unicast transmission and multicast transmission in the video code rate level information included in the video service information.
  • Reference code rate For example, for a certain video data, there are three kinds of code rate levels in the corresponding video bit rate level information, which are level 1, level 2, level 3, respectively. If the code rate of level 1 is the video data in unicast transmission and The lowest code rate that can be satisfied under multicast transmission, the code rate of level 1 is taken as the reference code rate.
  • the base station calculates a first total resource consumed by the unicast transmission mode at the reference code rate, and calculates a second total resource consumed by the multicast transmission mode at the reference code rate.
  • the base station may calculate a first total resource consumed by the unicast transmission mode at the reference code rate, and calculate a second total consumed by the multicast transmission mode at the reference code rate. Resources.
  • the base station selects, by using the first total resource and the second total resource, a transmission mode that consumes the least total resources as a transmission mode of the video data.
  • the base station compares that the first total resource consumed by the certain video data in the unicast transmission mode at the reference code rate is smaller than the second total resource consumed in the multicast transmission mode, The base station selects a unicast transmission mode to transmit the video data; when the base station compares, the first total resource ratio consumed by a certain video data in the unicast transmission mode at the reference code rate is compared in the multicast transmission mode. If the second total resource consumed is large, the base station selects a multicast transmission mode to transmit the video data.
  • the channel quality information may include a signal and interference plus noise ratio parameter measured by the user equipment in the unicast transmission mode, and a signal and interference plus noise ratio parameter measured by the user equipment in the multicast transmission mode; or
  • the channel quality information includes a signal and interference plus noise ratio parameter measured by the user equipment in a unicast transmission mode, and a channel quality of the base station in a multicast transmission mode, where the base station is in a multicast transmission mode.
  • User device coverage exceeds the preset coverage threshold.
  • the embodiment of the present invention can select a transmission mode of video data by using channel quality information, so that - -
  • the DASH service can flexibly perform unicast and multicast hybrid transmission.
  • FIG. 16 is a schematic flowchart of a method for selecting a transmission rate according to an embodiment of the present invention.
  • the method in the embodiment of the present invention may correspond to S205 in the foregoing embodiment corresponding to FIG. 14.
  • the embodiment of the present invention is described by selecting a transmission code rate.
  • the method of the embodiment of the present invention specifically includes:
  • the base station separately calculates, according to the channel quality information and the video code rate level information included in the video service information, the video bit rate level information of each video data in the selected transmission mode.
  • the unit corresponding to each code rate consumes resources, and the unit consumption resource is a resource consumed in each time slot;
  • the value of the unit consumption resource in the multicast transmission mode calculated by the base station is equal to a ratio of each DASH code rate corresponding to each video data to a transmission rate of a unit resource block corresponding to the multicast channel quality, where
  • the multicast channel quality is the smallest multicast channel quality in the channel quality information.
  • the value of the unit consumption resource in the unicast transmission mode calculated by the base station is equal to the transmission rate of the unit resource block corresponding to the quality of each unicast channel.
  • the sum of the ratios, the unicast channel quality is the channel quality of the user equipment requesting the video data in the unicast transmission mode.
  • the base station separately calculates a calculated ratio of a peak signal to noise ratio of each video data at each code rate and a corresponding unit consumption resource.
  • the calculated ratio calculated by the base station is a sum of a PSNR peak signal to noise ratio of each user equipment at the DASH code rate and a unit corresponding to each user equipment.
  • the ratio of the sum of the consumed resources is a PSNR peak signal to noise ratio of each user equipment at the DASH code rate and a unit corresponding to each user equipment.
  • the base station generates a sorting result of each video data corresponding to each code rate according to the calculated ratio, and traverses the sorting result in descending order;
  • the base station sorts each video data corresponding to each code rate according to the value of the calculated ratio, and sequentially traverses the sorting result according to the channel quality information.
  • the code rate levels are 1, 2, and 3, respectively
  • the sorting result obtained by the base station according to the calculated ratio in descending order may be Al, A2, Bl, C1, A3, C2, C3, B3. - -
  • the base station selects a minimum calculation ratio that satisfies a preset resource condition during the traversal process
  • the preset resource condition is that the resource consumed by the multicast transmission mode is smaller than the first subframe number threshold, and the total resource consumed by the multicast transmission mode and the unicast transmission mode is smaller than the second subframe number threshold.
  • the resource condition is: The total number of multicast RBs is within the selected 6 subframes, and the total number of all RBs is within a range of 1 frame (10 subframes).
  • the base station may select a minimum calculation ratio that satisfies a preset resource condition during the traversal process.
  • the sorting result obtained by the base station according to the calculated ratio in descending order may be Al, A2, Bl, C1, A3, C2, C3, B3. If C1 is the minimum calculation ratio that can satisfy the preset resource conditions, then Al, A2, Bl, and C1 can satisfy the preset resource conditions.
  • the base station separately selects a current maximum transmission code rate corresponding to each video data according to video data corresponding to a minimum calculation ratio that is greater than or equal to the preset resource condition.
  • the base station may select, according to the video data that is greater than or equal to the minimum calculation ratio that can meet the preset resource condition, respectively, the current maximum transmission code rate corresponding to each video data, where, and each video The calculation ratio corresponding to the current maximum transmission code rate of the data is greater than or equal to the minimum calculation ratio that can satisfy the preset resource condition.
  • the base station may select the transmission rate rate of the A video data to be 2; for the B video data, the base station may set the transmission rate level of the user equipment corresponding to the B video data to 2, or may first be B.
  • the ratio of the PSNR to the unit consumption resource corresponding to the three code rate levels of the three user equipments corresponding to the video data is ranked from largest to smallest. If the three user equipments are a, b, and c, respectively, the ranking result may be al, Bl, cl, a2, b2, c2, a3, b3, c3, and then the base station traverses the sorting result, - - when it is detected that b2 satisfies the resource condition and c2 cannot satisfy the resource condition, the base station may set the code rate level of the user equipment a to 2, set the code rate level of the user equipment b to 2, and set the user equipment c
  • the bit rate level is set to 1; if the resource does not meet the demand until C2, since the C video data is transmitted by multicast, the transmission rate of the user equipment of all C video data can only meet the transmission of level 1
  • the code rate, the transmission code rate of the user equipment of all A video data can satisfy the transmission code rate of level 3, and
  • All the steps performed by S401 to S405 are performed based on the capacity maximization rule, and the selection of the transmission bit rate by the capacity maximization rule enables more users to obtain better quality video services.
  • the transmission rate of the transmission mode corresponding to each video data can be selected by using the channel quality information, so that the DASH service can better utilize wireless resources such as network bandwidth.
  • the embodiment of the present invention can select the transmission code rate of the transmission mode corresponding to each video data by using the channel quality information of the channel quality of the unicast transmission mode and the channel quality of the base station in the multicast transmission mode, so that the user equipment cannot When collecting multicast channel quality, the DASH service can still utilize wireless resources such as network bandwidth.
  • FIG. 17 is a schematic flowchart of still another method for video data transmission according to an embodiment of the present invention, where the method includes:
  • the transmission conversion device acquires video service information of the unicast service network element.
  • the video service information includes a video data address requested by the user equipment and video code rate level information corresponding to the video data address, where the code rate level information includes at least one code rate corresponding to the video data.
  • the transmission conversion device may obtain the video service information from a unicast service network element.
  • the unicast service network element forwards the media representation description replied by the DASH server to the user equipment, the unicast service network element may parse the media representation description by intercepting to obtain the video service information.
  • the transmission conversion device may acquire the video data address url requested by the user equipment sent by the unicast service network element and the video code rate level information including 688 kbps, 1427 kbps, and 2056 kbps.
  • the transmission conversion device sends the video service information to a base station, so that the base station And generating decision information according to the video service information and the obtained channel quality information of each user equipment, where the base station is a primary base station selected by the selecting device;
  • the transmission conversion device may send the video service information to a base station by using a preset IP network-based interface, where the video service information includes a video data address requested by the user equipment and the video data address Corresponding video code rate level information, the code rate level information includes at least one code rate corresponding to the video data; wherein the IP network-based interface is an interface for connecting the base station and the transmission conversion device .
  • the transmission conversion device Since the transmission conversion device is a new entity, there is no defined interface between the transmission conversion device and the base station for communication. Therefore, reference may be made to an interface between the existing multimedia broadcast multicast gateway and the base station, The interface is a pure user interface, and the interface of the IP network is such that the interface defined between the transmission conversion device and the base station is the same as the interface defined between the multimedia broadcast multicast gateway and the base station.
  • the base station may generate decision information according to the video service information, the obtained channel quality information of each user equipment, and a capacity maximization rule.
  • the specific implementation process of the base station to generate the decision information refer to the method embodiment corresponding to the foregoing FIG. 13 to FIG. 16 , and details are not described herein again.
  • the transmission conversion device receives the decision information sent by the base station, and sends the decision information to the unicast service network element and the multicast service network element respectively, so that the unicast service network element And the multicast service network element respectively controls video data unicast transmission and controls video data multicast transmission; specifically, after the base station generates the decision information, the transmission conversion device may receive the location sent by the base station Determining the decision information, and transmitting the decision information to the unicast service network element and the multicast service network element, respectively, so that the unicast service network element and the multicast service network element respectively control video data unicast Transmit and control video data multicast transmission.
  • the decision information includes a transmission mode of the video data and a transmission code rate of the video data.
  • the unicast service network element may perform unicast transmission on the corresponding DASH video data at the current transmission code rate according to the transmission mode of the video data included in the decision information and the transmission code rate;
  • the element may group the corresponding DASH video data according to the current transmission code rate according to the transmission mode of the video data included in the decision information and the transmission code rate.
  • - - Broadcast transmission For example, video data with a small number of requested users can be transmitted in a unicast transmission manner; video data with a large number of users requesting at the same time can be transmitted in a multicast transmission manner, for example, in an MBSFN transmission manner. Transmission, this transmission mode can save frequency resources and improve spectrum utilization, so that DASH services can better utilize wireless resources such as network bandwidth.
  • the unicast service network element may be a DASH Proxy network element
  • the multicast service network element may be a BM-SC network element.
  • the transmission conversion device is a newly added control management entity for performing unicast and multicast conversion on the DASH service, and the transmission conversion device may be configured in a DASH Proxy network element or a BM-SC network element or a P-GW entity. in.
  • the channel quality information and the video service information of the user equipment are collected, and the decision information is generated according to the capacity maximization rule, so that the unicast service network element and the multicast service network element can be determined according to the decision information.
  • the DASH service with unicast and multicast hybrid transmission mode can better utilize wireless resources such as network bandwidth and provide better video quality for users. To meet the needs of various users.
  • FIG. 18 is a schematic flowchart of still another method for video data transmission according to an embodiment of the present disclosure, where the method includes:
  • the selecting device selects the primary base station and the secondary base station, and generates a selection result, where the selection result includes primary base station information and secondary base station information.
  • the selecting device may be an MME network element or an MCE network element.
  • the step of selecting the primary base station and the secondary base station by the selecting device may include: randomly selecting one of the base stations as the primary base station in the network, and using other base stations in the network as the secondary base station; or selecting the most connected users in the network.
  • the base station of the number of devices serves as the primary base station, and other base stations in the network are used as the secondary base stations; or, the base station with the best hardware performance is selected as the primary base station in the network, and other base stations in the network are used as the secondary base stations.
  • the selecting means may select the primary base station and the secondary base station and generate a selection result, the selection result including primary base station information and secondary base station information.
  • the selecting apparatus sends the selection result and measurement configuration information used to indicate that the user equipment performs channel quality testing to the base station, so that the base station acquires channel quality information according to the selection result and the measurement configuration information to generate For unicast transmission and/or multicast transmission of video data - - Policy information;
  • the selecting device may further generate measurement configuration information, where the measurement configuration information includes measurement parameters for channel quality of unicast and multicast, or only measurement parameters for channel quality of unicast, and the measurement configuration information is further A measurement period can be included.
  • the selecting means may send the selection result and measurement configuration information to a base station, so that the base station acquires channel quality information according to the selection result and measurement configuration information to generate unicast transmission for video data and/or The decision information of the multicast transmission, wherein the base station generates the decision information according to the video service information acquired from the transmission conversion device, the obtained channel quality information of each user equipment, and the capacity maximization rule, and the decision is made
  • the information is sent to the unicast service network element and the multicast service network element respectively, so that the unicast service network element and the multicast service network element respectively control video data unicast transmission and control video data multicast transmission.
  • the selecting device receives the identification information and ECGI of the user equipment corresponding to the selection device sent by the PCRF policy and the charging rule function network element;
  • the selecting device searches for a base station corresponding to the user equipment according to the identifier information of the user equipment and the ECGI, and sends the identifier information of the user equipment to the corresponding base station;
  • the selecting device may search for a base station corresponding to the user equipment according to the identifier information of the user equipment and the ECGI sent by the PCRF network element, and identify the user equipment.
  • the information is sent to the corresponding base station, so that each of the base stations can notify the user equipment indicated by the received identification information of the user equipment to perform measurement when collecting the channel quality information of the user equipment, where the identification information of the user equipment It refers to the identification information of the user equipment that requests DASH video data.
  • the identification information and the ECGI of the user equipment are found by the PCRF policy and the charging rule function network element according to the network address of the user equipment sent by the unicast service network element.
  • the unicast service network element may send the known user equipment information to the PCRF network element, so that the PCRF network element can Querying, according to the user equipment information, identifier information of the corresponding user equipment and - -
  • the PCRF network element can query the selection device that the user equipment is located according to the identification information of the user equipment and the ECGI, and send the identification information of the user equipment to the corresponding selection device.
  • the unicast service network element may be a DASH Proxy network element.
  • the DASH Proxy network element sends the network address of the user equipment to the PCRF network element; and then the PCRF network element queries the corresponding user equipment identification information and ECGI according to the network address of the user equipment, and then Determining the MME network element where the user equipment is located according to the identity information of the corresponding user equipment and the ECGI, and then sending the identifier information of the corresponding user equipment and the ECGI to the MME network element by using the serving gateway; the MME network element is configured according to The identification information of all the base stations in the network determines the base stations corresponding to the identification information of each user equipment, and sends the identification information of each user equipment to the corresponding base stations.
  • the channel quality information and the video service information of the user equipment are collected, and the decision information is generated according to the capacity maximization rule, so that the unicast service network element and the multicast service network element can be determined according to the decision information.
  • the DASH service with unicast and multicast hybrid transmission mode can better utilize wireless resources such as network bandwidth and provide better video quality for users. To meet the needs of various users.
  • the unicast service network element sends the obtained user equipment information to the PCRF network element;
  • the PCRF network element queries the identifier information and ECGI of the corresponding user equipment according to the user equipment information;
  • the selecting device determines a correspondence between each user equipment and each base station according to the identifier information of the user equipment and the ECGI;
  • the selecting device sends the identification information of the user equipment to each corresponding base station according to the corresponding relationship, so that each base station can know which user equipments that request DASH video data are connected to the base station;
  • Selecting means selects a primary base station and a secondary base station, and generates a selection result, and selects the selected node - the fruit and measurement configuration information is sent to the primary base station indicated in the selection result;
  • the unicast service network element sends the obtained DASH video service information to the transmission conversion device; the primary base station acquires DASH video service information in the transmission conversion device, and notifies the main device according to the measurement configuration information.
  • the user equipment and the secondary base station that request the DASH video data connected by the base station collect channel quality information;
  • the primary base station generates decision information according to the capacity maximization rule, the channel quality information, and the DASH video service information, and sends the decision information to the unicast service network element and the multicast service network element.
  • the unicast service network element controls the corresponding DASH video data to be transmitted in a unicast transmission manner according to the decision information
  • the multicast service network element controls the corresponding DASH video data to be transmitted in a multicast transmission manner according to the decision information.
  • the channel quality information and the video service information of the user equipment are collected, and the decision information is generated according to the capacity maximization rule, so that the unicast service network element and the multicast service network element can be determined according to the decision information.
  • the DASH service with unicast and multicast hybrid transmission mode can better utilize wireless resources such as network bandwidth and provide better video quality for users. To meet the needs of various users.
  • the embodiment of the present invention further provides a computer storage medium, wherein the computer storage medium can store a program, and when the program is executed, the method includes the method of the video data transmission method described in the method embodiment of FIG. 13 to FIG. 16 described above. Or all steps.
  • the embodiment of the present invention further provides another computer storage medium, wherein the computer storage medium may store a program, where the program includes some or all of the methods of video data transmission described in the foregoing method embodiment of FIG. step.
  • the embodiment of the present invention further provides a computer storage medium, wherein the computer storage medium may store a program, where the program includes some or all of the methods of video data transmission described in the method embodiment of FIG. 18 described above. step.
  • the machine readable storage medium which, when executed, may include the flow of an embodiment of the methods as described above.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

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Abstract

一种视频数据传输的方法以及相关设备,其中,所述方法可以包括:当基站接收到选择装置发送的选择结果信息和测量配置信息时,所述基站根据所述选择结果确定本基站为主基站;所述基站通过所述测量配置信息获取信道质量信息;所述基站根据所述信道质量信息以及从传输转换装置中获取到的视频业务信息生成决策信息,并将所述决策信息发送到所述传输转换装置,以使所述传输转换装置根据所述决策信息通知单播业务网元控制视频数据单播传输和/或通知组播业务网元控制视频数据组播传输。采用所述方法,可以使DASH服务进行单播、组播混合传输,从而可以更好的利用网络带宽等无线资源,使用户得到更优的视频质量。

Description

一 一 一种视频数据传输的方法以及相关设备 技术领域
本发明涉及通信技术领域,尤其涉及一种视频数据传输的方法以及相关设 备。 背景技术
传统 DASH ( Dynamic Adaptive Streaming over HTTP, 基于 HTTP的动态 自适应流媒体 )服务是采用基于 HTTP ( Hypertext transfer protocol, 超文本传 输协议) 的单播传输, 单播服务在请求 DASH服务的用户数量较少时效果比 较好, 尤其是对于信道质量较差的用户有较好的效果。
当在一个集中区域有大量用户同时请求相同内容的视频服务, 且通过 DASH服务为所有用户传输视频内容时, 那么可能会出现无线资源不够用、提 供给用户的视频质量下降等问题。 由于传统的 DASH服务只能单播传输, 所 以在大量用户同时请求相同内容的视频服务时, 传统 DASH服务无法满足用 户需求。 发明内容
本发明实施例提供一种视频数据传输的方法以及相关设备, 可以通过对 DASH服务传输方式的改进, 以满足更多用户的需求。
本发明第一方面提供了一种基站, 包括:
确定模块,用于当接收到选择装置发送的选择结果信息和用于指示用户设 备进行信道质量测试的测量配置信息时,根据所述选择结果确定本基站为主基 站, 所述选择结果包括所述选择装置选择出的主基站信息和辅助基站信息; 测量信息收发模块,用于将所述测量配置信息发送到与本基站连接的用户 设备和辅助基站,并接收所述与本基站连接的用户设备和辅助基站根据所述测 量配置信息反馈的与辅助基站连接的用户设备的信道质量信息; - - 决策模块,用于根据所述信道质量信息以及从传输转换装置中获取到的视 频业务信息生成决策信息, 并将所述决策信息发送到所述传输转换装置, 以使 所述传输转换装置根据所述决策信息通知单播业务网元控制视频数据单播传 输和 /或通知组播业务网元控制视频数据组播传输;
其中, 所述决策信息包括视频数据的传输方式以及传输码率。
在第一种可能的实现方式中, 还包括:
视频信息获取模块, 用于通过预设的基于 IP网络的接口从传输转换装置 中获取视频业务信息;
其中,所述视频业务信息包括用户设备请求的视频数据地址以及与所述视 频数据地址对应的视频码率等级信息,所述码率等级信息包括与视频数据对应 的至少一种码率;
其中, 所述基于 IP网络的接口是用于连接所述基站和所述传输转换装置 的接口。
结合第一方面或第一方面的第一种可能的实现方式,在第二种可能的实现 方式中,
与所述辅助基站连接的用户设备的信道质量信息是由与所述辅助基站连 接的用户设备根据所述辅助基站所发送的所述测量配置信息进行测量得到的。
结合第一方面的第二种可能的实现方式,在第三种可能的实现方式中, 所 述决策模块包括:
传输方式选择单元,用于根据所述信道质量信息以及从传输转换装置中获 取到的视频业务信 , ¾选择视频数据的传输方式;
传输码率选择单元,用于根据所述信道质量信息以及从传输转换装置中获 取到的视频业务信息选择视频数据的传输码率;
决策发送单元,用于将携带有所述视频数据的传输方式和所述视频数据的 传输码率的决策信息发送到所述传输转换装置。
结合第一方面的第三种可能的实现方式,在第四种可能的实现方式中, 所 述传输方式选择单元包括: - - 参考码率选择子单元,用于根据所述信道质量信息在所述视频业务信息所 包括的所述视频码率等级信息中选择视频数据在单播传输和组播传输下均能 满足的最低码率作为参考码率;
消耗资源计算子单元,用于计算在所述参考码率下单播传输方式所消耗的 第一总资源, 并计算在所述参考码率下组播传输方式所消耗的第二总资源; 传输方式选择子单元, 用于通过比较所述第一总资源和所述第二总资源, 选择所消耗的总资源最少的传输方式作为所述视频数据的传输方式。
结合第一方面的第四种可能的实现方式,在第五种可能的实现方式中, 所 述传输码率选择单元包括:
单位消耗计算子单元,用于根据所述信道质量信息和所述视频业务信息所 包括的所述视频码率等级信息,分别计算每个视频数据在已选择的传输方式下 的与所述视频码率等级信息中每个码率对应的单位消耗资源,所述单位消耗资 源是在每个时隙上所消耗的资源;
比值计算子单元,用于分别计算每个视频数据在每种码率下的峰值信噪比 与对应的单位消耗资源的计算比值;
排序遍历子单元,用于根据所述计算比值生成对各个码率对应的各个视频 数据的排序结果, 并按照从大到小的顺序对所述排序结果进行遍历;
比值选择子单元,用于在遍历过程中选择出能够满足预设的资源条件的最 小计算比值;
传输码率选择子单元,用于根据大于或等于所述能够满足预设的资源条件 的最小计算比值所对应的视频数据,分别选择出各个视频数据所对应的当前最 大传输码率;
其中,与各个视频数据的当前最大传输码率所对应的计算比值均大于或等 于所述能够满足预设的资源条件的最小计算比值;
其中,所述预设的资源条件是组播传输方式所消耗的资源小于第一子帧数 量阈值,且组播传输方式和单播传输方式所消耗的总资源小于第二子帧数量阈 值。 - - 结合第一方面的第三种可能的实现方式,或第一方面的第四种可能的实现 方式, 或第一方面的第五种可能的实现方式, 在第六种可能的实现方式中, 所述信道质量信息包括用户设备在单播传输方式下测量的信号与干扰加 噪声比 (SINR )参数, 以及用户设备在组播传输方式下测量的信号与干扰加 噪声比参数; 或者,
所述信道质量信息包括用户设备在单播传输方式下测量的信号与干扰加 噪声比参数, 以及本基站在组播传输方式下的信道质量, 其中, 所述本基站在 组播传输方式下的用户设备覆盖率超过预设的覆盖率阈值。
结合第一方面的第三种可能的实现方式,或第一方面的第四种可能的实现 方式, 或第一方面的第五种可能的实现方式, 或第一方面的第六种可能的实现 方式, 在第七种可能的实现方式中, 还包括:
更新模块,用于当测量时间间隔达到所述测量配置信息所包含的测量周期 时,接收更新后的信道质量信息, 并对所述决策信息进行更新以便于更新所述 视频数据的传输码率。
结合第一方面, 或第一方面的第一种可能的实现方式, 或第一方面的第二 种可能的实现方式, 或第一方面的第三种可能的实现方式, 或第一方面的第四 种可能的实现方式, 或第一方面的第五种可能的实现方式, 或第一方面的第六 种可能的实现方式, 或第一方面的第七种可能的实现方式,在第八种可能的实 现方式中, 还包括:
标识信息发送模块, 用于将主基站标识信息发送到所述传输转换装置, 以 使所述传输转换装置根据所述主基站标识信息确定本基站为主基站。
本发明第二方面提供了一种传输转换装置, 包括:
获取模块, 用于获取单播业务网元的视频业务信息;
视频信息发送模块, 用于将所述视频业务信息发送到基站, 以使所述基站 根据所述视频业务信息、 获取到的各个用户设备的信道质量信息生成决策信 息, 所述基站是由选择装置所选择出的主基站;
决策信息接收模块, 用于接收所述基站发送的所述决策信息, 并将所述决 - - 策信息分别发送到所述单播业务网元和组播业务网元,以使所述单播业务网元 和所述组播业务网元分别控制视频数据单播传输和控制视频数据组播传输。
在第一种可能的实现方式中,所述视频信息发送模块具体用于通过预设的 基于 IP网络的接口将所述视频业务信息发送到基站;
其中,所述视频信息发送模块发送的所述视频业务信息包括用户设备请求 等级信息包括与视频数据对应的至少一种码率;
其中, 所述基于 IP网络的接口是用于连接所述基站和所述传输转换装置 的接口。
结合第二方面或第二方面的第一种可能的实现方式,在第二种可能的实现 方式中, 所述决策信息包括视频数据的传输方式和视频数据的传输码率。
本发明第三方面提供了一种选择装置, 包括:
选择结果生成模块, 用于选择主基站和辅助基站, 并生成选择结果, 所述 选择结果包括主基站信息和辅助基站信息;
选择结果发送模块,用于将所述选择结果和用于指示用户设备进行信道质 量测试的测量配置信息发送到基站,以使所述基站根据所述选择结果和测量配 置信息获取信道质量信息以生成用于对视频数据进行单播传输和 /或组播传输 的决策信息;
其中,接收到所述选择结果的基站是与所述选择结果中主基站信息对应的 基站。
在第一种可能的实现方式中, 所述选择结果生成模块包括:
第一选择单元, 用于在网络中随机选择其中一个基站为主基站, 并将所述 网络中的其他基站作为辅助基站;
第二选择单元,用于在网络中选择连接有最多用户设备数量的基站作为主 基站, 并将所述网络中的其他基站作为辅助基站;
第三选择单元, 用于在网络中选择硬件性能最好的基站作为主基站, 并将 所述网络中的其他基站作为辅助基站。 - - 结合第三方面或第三方面的第一种可能的实现方式,在第二种可能的实现 方式中, 还包括:
标识信息接收模块, 用于接收策略与计费规则功能(PCRF ) 网元发送的 与本选择装置对应的用户设备的标识信息和全球唯一的小区标示( ECGI );
查找发送模块,用于根据所述用户设备的标识信息和 ECGI查找到与所述 用户设备对应的基站, 并将所述用户设备的标识信息发送到对应的基站; 其中, 所述用户设备的标识信息和 ECGI是由所述 PCRF网元根据单播业 务网元发送的用户设备网络地址查找到的。
本发明第四方面提供了一种基站, 包括: 处理器、 通信接口和存储器, 其 中,
所述通信接口, 用于与传输转换装置、 选择装置、 用户设备以及辅助基站 进行通信;
所述存储器用于存储程序;
所述处理器用于执行所述程序, 以实现
当接收到选择装置发送的选择结果信息和用于指示用户设备进行信道质 量测试的测量配置信息时,根据所述选择结果确定本基站为主基站, 所述选择 结果包括所述选择装置选择出的主基站信息和辅助基站信息;
将所述测量配置信息发送到与本基站连接的用户设备和辅助基站,并接收 所述与本基站连接的用户设备和辅助基站根据所述测量配置信息反馈的与辅 助基站连接的用户设备的信道质量信息;
根据所述信道质量信息以及从传输转换装置中获取到的视频业务信息生 成决策信息, 并将所述决策信息发送到所述传输转换装置, 以使所述传输转换 装置根据所述决策信息通知单播业务网元控制视频数据单播传输和 /或通知组 播业务网元控制视频数据组播传输;
其中, 所述决策信息包括视频数据的传输方式以及传输码率。
在第一种可能的实现方式中, 所述处理器还用于:
通过预设的基于 IP网络的接口从传输转换装置中获取视频业务信息; 其中,所述视频业务信息包括用户设备请求的视频数据地址以及与所述视 频数据地址对应的视频码率等级信息,所述码率等级信息包括与视频数据对应 的至少一种码率;
其中, 所述基于 IP网络的接口是用于连接所述基站和所述传输转换装置 的接口。
结合第四方面或第四方面的第一种可能的实现方式,在第二种可能的实现 方式中,
与所述辅助基站连接的用户设备的信道质量信息是由与所述辅助基站连 接的用户设备根据所述辅助基站所发送的所述测量配置信息进行测量得到的。
结合第四方面的第二种可能的实现方式,在第三种可能的实现方式中, 所 述处理器具体用于:
根据所述信道质量信息以及从传输转换装置中获取到的视频业务信息选 择视频数据的传输方式;
根据所述信道质量信息以及从传输转换装置中获取到的视频业务信息选 择视频数据的传输码率;
将携带有所述视频数据的传输方式和所述视频数据的传输码率的决策信 息发送到所述传输转换装置。
结合第四方面的第三种可能的实现方式,在第四种可能的实现方式中, 所 述处理器具体用于:
根据所述信道质量信息在所述视频业务信息所包括的所述视频码率等级 信息中选择视频数据在单播传输和组播传输下均能满足的最低码率作为参考 码率;
计算在所述参考码率下单播传输方式所消耗的第一总资源,并计算在所述 参考码率下组播传输方式所消耗的第二总资源;
通过比较所述第一总资源和所述第二总资源,选择所消耗的总资源最少的 传输方式作为所述视频数据的传输方式。
结合第四方面的第四种可能的实现方式,在第五种可能的实现方式中, 所 述处理器具体用于: - - 根据所述信道质量信息和所述视频业务信息所包括的所述视频码率等级 信息,分别计算每个视频数据在已选择的传输方式下的与所述视频码率等级信 息中每个码率对应的单位消耗资源,所述单位消耗资源是在每个时隙上所消耗 的资源;
分别计算每个视频数据在每种码率下的峰值信噪比与对应的单位消耗资 源的计算比值;
根据所述计算比值生成对各个码率对应的各个视频数据的排序结果,并按 照从大到小的顺序对所述排序结果进行遍历;
在遍历过程中选择出能够满足预设的资源条件的最小计算比值; 根据大于或等于所述能够满足预设的资源条件的最小计算比值所对应的 视频数据, 分别选择出各个视频数据所对应的当前最大传输码率;
其中,与各个视频数据的当前最大传输码率所对应的计算比值均大于或等 于所述能够满足预设的资源条件的最小计算比值;
其中,所述预设的资源条件是组播传输方式所消耗的资源小于第一子帧数 量阈值,且组播传输方式和单播传输方式所消耗的总资源小于第二子帧数量阈 值。
结合第四方面的第三种可能的实现方式,或第四方面的第四种可能的实现 方式, 或第四方面的第五种可能的实现方式, 在第六种可能的实现方式中, 所述信道质量信息包括用户设备在单播传输方式下测量的信号与干扰加 噪声比 (SINR )参数, 以及用户设备在组播传输方式下测量的信号与干扰加 噪声比参数; 或者,
所述信道质量信息包括用户设备在单播传输方式下测量的信号与干扰加 噪声比参数, 以及本基站在组播传输方式下的信道质量, 其中, 所述本基站在 组播传输方式下的用户设备覆盖率超过预设的覆盖率阈值。
结合第四方面的第三种可能的实现方式,或第四方面的第四种可能的实现 方式, 或第四方面的第五种可能的实现方式, 或第四方面的第六种可能的实现 方式, 在第七种可能的实现方式中, 所述处理器还用于: - - 当测量时间间隔达到所述测量配置信息所包含的测量周期时,接收更新后 的信道质量信息,并对所述决策信息进行更新以便于更新所述视频数据的传输 码率。
结合第四方面, 或第四方面的第一种可能的实现方式, 或第四方面的第二 种可能的实现方式, 或第四方面的第三种可能的实现方式, 或第四方面的第四 种可能的实现方式, 或第四方面的第五种可能的实现方式, 或第四方面的第六 种可能的实现方式, 或第四方面的第七种可能的实现方式,在第八种可能的实 现方式中, 所述处理器还用于:
将主基站标识信息发送到所述传输转换装置,以使所述传输转换装置根据 所述主基站标识信息确定本基站为主基站。
本发明第五方面提供了一种传输转换装置, 包括: 处理器、 通信接口和存 储器, 其中,
所述通信接口, 用于与基站、 单播业务网元以及组播业务网元进行通信; 所述存储器用于存储程序;
所述处理器用于执行所述程序, 以实现
获取单播业务网元的视频业务信息;
将所述视频业务信息发送到基站, 以使所述基站根据所述视频业务信息、 获取到的各个用户设备的信道质量信息生成决策信息,所述基站是由选择装置 所选择出的主基站;
接收所述基站发送的所述决策信息,并将所述决策信息分别发送到所述单 播业务网元和组播业务网元,以使所述单播业务网元和所述组播业务网元分别 控制视频数据单播传输和控制视频数据组播传输。
在第一种可能的实现方式中, 所述处理器具体用于:
通过预设的基于 IP网络的接口将所述视频业务信息发送到基站; 其中,所述视频业务信息包括用户设备请求的视频数据地址以及与所述视 频数据地址对应的视频码率等级信息,所述码率等级信息包括与视频数据对应 的至少一种码率;
其中, 所述基于 IP网络的接口是用于连接所述基站和所述传输转换装置 - - 的接口。
结合第五方面或第五方面的第一种可能的实现方式,在第二种可能的实现 方式中, 所述决策信息包括视频数据的传输方式和视频数据的传输码率。
本发明第六方面提供了一种选择装置, 包括:处理器、通信接口和存储器, 其中,
所述通信接口, 用于与 PCRF策略与计费规则功能网元以及基站进行通 信;
所述存储器用于存储程序;
所述处理器用于执行所述程序, 以实现
选择主基站和辅助基站, 并生成选择结果, 所述选择结果包括主基站信息 和辅助基站信息;
将所述选择结果和用于指示用户设备进行信道质量测试的测量配置信息 发送到基站,以使所述基站根据所述选择结果和测量配置信息获取信道质量信 息以生成用于对视频数据进行单播传输和 /或组播传输的决策信息;
其中,接收到所述选择结果的基站是与所述选择结果中主基站信息对应的 基站。
在第一种可能的实现方式中, 所述处理器具体用于:
在网络中随机选择其中一个基站为主基站,并将所述网络中的其他基站作 为辅助基站; 或者,
在网络中选择连接有最多用户设备数量的基站作为主基站,并将所述网络 中的其他基站作为辅助基站; 或者,
在网络中选择硬件性能最好的基站作为主基站,并将所述网络中的其他基 站作为辅助基站。
结合第六方面或第六方面的第一种可能的实现方式,在第二种可能的实现 方式中, 所述处理器还用于:
接收策略与计费规则功能( PCRF ) 网元发送的与本选择装置对应的用户 设备的标识信息和全球唯一的小区标示 ( ECGI );
根据所述用户设备的标识信息和 ECGI 查找到与所述用户设备对应的基 - - 站, 并将所述用户设备的标识信息发送到对应的基站;
其中, 所述用户设备的标识信息和 ECGI是由所述 PCRF网元根据单播业 务网元发送的用户设备网络地址查找到的。
本发明第七方面提供了一种视频数据传输的方法, 包括:
当基站接收到选择装置发送的选择结果信息和用于指示用户设备进行信 道质量测试的测量配置信息时,所述基站根据所述选择结果确定本基站为主基 站, 所述选择结果包括所述选择装置选择出的主基站信息和辅助基站信息; 所述基站将所述测量配置信息发送到与本基站连接的用户设备和辅助基 站,并接收所述与本基站连接的用户设备和辅助基站根据所述测量配置信息反 馈的与辅助基站连接的用户设备的信道质量信息;
所述基站根据所述信道质量信息以及从传输转换装置中获取到的视频业 务信息生成决策信息, 并将所述决策信息发送到所述传输转换装置, 以使所述 传输转换装置根据所述决策信息通知单播业务网元控制视频数据单播传输和 / 或通知组播业务网元控制视频数据组播传输;
其中, 所述决策信息包括视频数据的传输方式以及传输码率。
在第一种可能的实现方式中,在所述基站根据所述信道质量信息以及从传 输转换装置中获取到的视频业务信息生成决策信息,并将所述决策信息发送到 所述传输转换装置的步骤之前, 还包括:
所述基站通过预设的基于 IP网络的接口从传输转换装置中获取视频业务 信息;
其中,所述视频业务信息包括用户设备请求的视频数据地址以及与所述视 频数据地址对应的视频码率等级信息,所述码率等级信息包括与视频数据对应 的至少一种码率;
其中, 所述基于 IP网络的接口是用于连接所述基站和所述传输转换装置 的接口。
结合第七方面或第七方面的第一种可能的实现方式,在第二种可能的实现 方式中, - - 与所述辅助基站连接的用户设备的信道质量信息是由与所述辅助基站连 接的用户设备根据所述辅助基站所发送的所述测量配置信息进行测量得到的。
结合第七方面的第二种可能的实现方式,在第三种可能的实现方式中, 所 述基站根据所述信道质量信息以及从传输转换装置中获取到的视频业务信息 生成决策信息, 并将所述决策信息发送到所述传输转换装置, 包括:
所述基站根据所述信道质量信息以及从传输转换装置中获取到的视频业 务信息选择视频数据的传输方式;
所述基站根据所述信道质量信息以及从传输转换装置中获取到的视频业 务信息选择视频数据的传输码率;
所述基站将携带有所述视频数据的传输方式和所述视频数据的传输码率 的决策信息发送到所述传输转换装置。
结合第七方面的第三种可能的实现方式,在第四种可能的实现方式中, 所 述基站根据所述信道质量信息以及从传输转换装置中获取到的视频业务信息 选择视频数据的传输方式, 包括:
所述基站根据所述信道质量信息在所述视频业务信息所包括的所述视频 码率等级信息中选择视频数据在单播传输和组播传输下均能满足的最低码率 作为参考码率;
所述基站计算在所述参考码率下单播传输方式所消耗的第一总资源,并计 算在所述参考码率下组播传输方式所消耗的第二总资源;
所述基站通过比较所述第一总资源和所述第二总资源,选择所消耗的总资 源最少的传输方式作为所述视频数据的传输方式。
结合第七方面的第四种可能的实现方式,在第五种可能的实现方式中, 所 述基站根据所述信道质量信息以及从传输转换装置中获取到的视频业务信息 选择视频数据的传输码率, 包括:
所述基站根据所述信道质量信息和所述视频业务信息所包括的所述视频 码率等级信息,分别计算每个视频数据在已选择的传输方式下的与所述视频码 率等级信息中每个码率对应的单位消耗资源,所述单位消耗资源是在每个时隙 - - 上所消耗的资源;
所述基站分别计算每个视频数据在每种码率下的峰值信噪比与对应的单 位消耗资源的计算比值;
所述基站根据所述计算比值生成对各个码率对应的各个视频数据的排序 结果, 并按照从大到小的顺序对所述排序结果进行遍历;
所述基站在遍历过程中选择出能够满足预设的资源条件的最小计算比值; 所述基站根据大于或等于所述能够满足预设的资源条件的最小计算比值 所对应的视频数据, 分别选择出各个视频数据所对应的当前最大传输码率; 其中,与各个视频数据的当前最大传输码率所对应的计算比值均大于或等 于所述能够满足预设的资源条件的最小计算比值;
其中,所述预设的资源条件是组播传输方式所消耗的资源小于第一子帧数 量阈值,且组播传输方式和单播传输方式所消耗的总资源小于第二子帧数量阈 值。
结合第七方面的第三种可能的实现方式,或第七方面的第四种可能的实现 方式, 或第七方面的第五种可能的实现方式, 在第六种可能的实现方式中, 所述信道质量信息包括用户设备在单播传输方式下测量的信号与干扰加 噪声比 (SINR )参数, 以及用户设备在组播传输方式下测量的信号与干扰加 噪声比参数; 或者,
所述信道质量信息包括用户设备在单播传输方式下测量的信号与干扰加 噪声比参数, 以及本基站在组播传输方式下的信道质量, 其中, 所述本基站在 组播传输方式下的用户设备覆盖率超过预设的覆盖率阈值。
结合第七方面的第三种可能的实现方式,或第七方面的第四种可能的实现 方式, 或第七方面的第五种可能的实现方式, 或第七方面的第六种可能的实现 方式, 在第七种可能的实现方式中, 还包括:
当测量时间间隔达到所述测量配置信息所包含的测量周期时,所述基站接 收更新后的信道质量信息,并对所述决策信息进行更新以便于更新所述视频数 据的传输码率。 - - 结合第七方面, 或第七方面的第一种可能的实现方式, 或第七方面的第二 种可能的实现方式, 或第七方面的第三种可能的实现方式, 或第七方面的第四 种可能的实现方式, 或第七方面的第五种可能的实现方式, 或第七方面的第六 种可能的实现方式, 或第七方面的第七种可能的实现方式,在第八种可能的实 现方式中, 还包括:
所述基站将主基站标识信息发送到所述传输转换装置,以使所述传输转换 装置根据所述主基站标识信息确定本基站为主基站。
本发明第八方面提供了一种视频数据传输的方法, 包括:
传输转换装置获取单播业务网元的视频业务信息;
所述传输转换装置将所述视频业务信息发送到基站,以使所述基站根据所 述视频业务信息、获取到的各个用户设备的信道质量信息生成决策信息,所述 基站是由选择装置所选择出的主基站;
所述传输转换装置接收所述基站发送的所述决策信息,并将所述决策信息 分别发送到所述单播业务网元和组播业务网元,以使所述单播业务网元和所述 组播业务网元分别控制视频数据单播传输和控制视频数据组播传输。
在第一种可能的实现方式中,所述传输转换装置将所述视频业务信息发送 到基站, 包括:
所述传输转换装置通过预设的基于 IP网络的接口将所述视频业务信息发 送到基站;
其中,所述视频业务信息包括用户设备请求的视频数据地址以及与所述视 频数据地址对应的视频码率等级信息,所述码率等级信息包括与视频数据对应 的至少一种码率;
其中, 所述基于 IP网络的接口是用于连接所述基站和所述传输转换装置 的接口。
结合第八方面或第八方面的第一种可能的实现方式,在第二种可能的实现 方式中, 所述决策信息包括视频数据的传输方式和视频数据的传输码率。
本发明第九方面提供了一种视频数据传输的方法, 包括: - - 选择装置选择主基站和辅助基站, 并生成选择结果, 所述选择结果包括主 基站信息和辅助基站信息;
所述选择装置将所述选择结果和用于指示用户设备进行信道质量测试的 测量配置信息发送到基站,以使所述基站根据所述选择结果和测量配置信息获 取信道质量信息以生成用于对视频数据进行单播传输和 /或组播传输的决策信 其中,接收到所述选择结果的基站是与所述选择结果中主基站信息对应的 基站。
在第一种可能的实现方式中, 所述选择装置选择主基站和辅助基站包括: 在网络中随机选择其中一个基站为主基站,并将所述网络中的其他基站作 为辅助基站; 或者,
在网络中选择连接有最多用户设备数量的基站作为主基站,并将所述网络 中的其他基站作为辅助基站; 或者,
在网络中选择硬件性能最好的基站作为主基站,并将所述网络中的其他基 站作为辅助基站。
结合第九方面或第九方面的第一种可能的实现方式,在第二种可能的实现 方式中, 在所述选择装置根据选择规则生成选择结果的步骤之前, 还包括: 所述选择装置接收策略与计费规则功能 (PCRF ) 网元发送的与本选择装 置对应的用户设备的标识信息和全球唯一的小区标示( ECGI );
所述选择装置根据所述用户设备的标识信息和 ECGI查找到与所述用户设 备对应的基站, 并将所述用户设备的标识信息发送到对应的基站;
其中, 所述用户设备的标识信息和 ECGI是由所述 PCRF网元根据单播业 务网元发送的用户设备网络地址查找到的。
本发明第十方面提供了一种计算机存储介质,
所述计算机存储介质可存储有程序,该程序执行时包括第七方面提供的一 种视频数据传输的方法的部分或全部步骤。
本发明第十一方面提供了一种计算机存储介质,
所述计算机存储介质可存储有程序,该程序执行时包括第八方面提供的一 - - 种视频数据传输的方法的部分或全部步骤。
本发明第十二方面提供了一种计算机存储介质,
所述计算机存储介质可存储有程序,该程序执行时包括第九方面提供的一 种视频数据传输的方法的部分或全部步骤。
由上可见, 本发明实施例通过收集用户设备的信道质量信息、视频业务信 息, 可以生成决策信息,使得单播业务网元和组播业务网元可以根据所述决策 信息分别控制对应的 DASH视频数据进行单播传输或组播传输, 因此, 具有 单播、 组播混合传输方式的 DASH服务可以更好的利用网络带宽等无线资源, 并为用户提供更优的视频质量, 以满足各类用户需求。 附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施 例中所需要使用的附图作筒单地介绍,显而易见地, 下面描述中的附图仅仅是 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为本发明实施例提供的一种基站的结构示意图;
图 2为本发明实施例提供的一种决策模块的结构示意图;
图 3为本发明实施例提供的一种传输方式选择单元的结构示意图; 图 4为本发明实施例提供的一种传输码率选择单元的结构示意图; 图 5为本发明实施例提供的另一种基站的结构示意图;
图 6为本发明实施例提供的又一种基站的结构示意图;
图 7为本发明实施例提供的一种传输转换装置的结构示意图;
图 8为本发明实施例提供的另一种传输转换装置的结构示意图;
图 9为本发明实施例提供的一种选择装置的结构示意图;
图 10为本发明实施例提供的另一种选择装置的结构示意图;
图 11为本发明实施例提供的又一种选择装置的结构示意图;
图 12为本发明实施例提供的一种视频数据传输的系统的结构示意图; 图 13为本发明实施例提供的一种视频数据传输的方法的流程示意图; - - 图 14为本发明实施例提供的另一种视频数据传输的方法的流程示意图; 图 15为本发明实施例提供的一种选择传输方式的方法的流程示意图; 图 16为本发明实施例提供的一种选择传输码率的方法的流程示意图; 图 17为本发明实施例提供的又一种视频数据传输的方法的流程示意图; 图 18为本发明实施例提供的又一种视频数据传输的方法的流程示意图。 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, 所描述的实施例仅仅是本发明一部分实施例, 而不是 全部的实施例。基于本发明中的实施例, 本领域普通技术人员在没有作出创造 性劳动前提下所获得的所有其他实施例, 都属于本发明保护的范围。
请参见图 1 , 为本发明实施例提供的一种基站 1的结构示意图, 所述基站 1包括: 确定模块 11、 测量信息收发模块 12、 决策模块 13;
所述确定模块 11 , 用于当接收到选择装置发送的选择结果信息和用于指 示用户设备进行信道质量测试的测量配置信息时,根据所述选择结果确定本基 站为主基站,所述选择结果包括所述选择装置选择出的主基站信息和辅助基站 信息;
具体的, 当所述确定模块 11接收到选择装置发送的选择结果信息和用于 指示用户设备进行信道质量测试的测量配置信息时, 所述确定模块 11可以根 据所述选择结果确定本基站为主基站, 同时所述确定模块 11还可以知道网络 中其他基站为辅助基站,所述选择结果包括所述选择装置根据选择规则选择出 的主基站信息和辅助基站信息。 其中, 所述选择装置可以为 MME ( Mobility Management Entity , 移动管理实体) 网元或 MCE ( Multi-cell/multicast Coordination Entity, 多小区 /组播协调实体) 网元。 所述选择规则可以为: 在 网络中随机选择其中一个基站为主基站,并将所述网络中的其他基站作为辅助 基站; 或者, 在网络中选择连接有最多用户设备数量的基站作为主基站, 并将 所述网络中的其他基站作为辅助基站。 - - 在所述选择装置发送选择结果之前,所述选择装置可以根据 PCRF( Policy and Charging Rules Function , 策略与计费规则功能) 网元发送的用户设备的标 识信息和 ECGI ( E-UTRAN Cell Global Identifier, 全球唯一的小区标示), 查找 与所述用户设备对应的基站, 并将所述用户设备的标识信息发送到对应的基 站,使得各个基站在收集用户设备的信道质量信息时, 可以通知所接收到的所 述用户设备的标识信息所指示的用户设备进行测量, 其中, 所述用户设备的标 识信息是指请求 DASH视频数据的用户设备的标识信息。
在所述选择装置接收到 PCRF网元发送的用户设备的标识信息和 ECGI之 前, 单播业务网元可以将已知的用户设备信息发送到所述 PCRF网元, 以使所 述 PCRF 网元可以根据所述用户设备信息查询对应的用户设备的标识信息和 ECGI ,所述 PCRF网元根据所述用户设备的标识信息和 ECGI可以查询到用户 设备所处于的选择装置并将所述用户设备的标识信息发送到对应的选择装置 中。其中, 所述单播业务网元可以为 DASH Proxy ( DASH Proxy, DASH代理) 网元。 例如, 所述 DASH Proxy网元将用户设备的网络地址发送到所述 PCRF 网元;然后所述 PCRF网元根据所述用户设备的网络地址查询对应的用户设备 的标识信息和 ECGI, 并才艮据对应的用户设备的标识信息和 ECGI确定该用户 设备所在的 MME网元,再通过服务网关将所述对应的用户设备的标识信息和 ECGI发送到所述 MME网元; 所述 MME网元根据网络中所有基站的标识信 息确定每个用户设备的标识信息所对应的基站,并将所述每个用户设备的标识 信息发送到各自对应的基站中, 使得各个基站可以知道与自己连接的请求 DASH视频数据的用户设备有哪些。
所述测量信息收发模块 12, 用于将所述测量配置信息发送到与本基站连 接的用户设备和辅助基站,并接收所述与本基站连接的用户设备和辅助基站根 据所述测量配置信息反馈的与辅助基站连接的用户设备的信道质量信息;
具体的, 所述测量信息收发模块 12可以将所述测量配置信息发送到与本 基站连接的用户设备和辅助基站。当与本基站连接的用户设备接收到所述测量 配置信息时,所述与本基站连接的用户设备可以根据所述测量配置信息分别测 - - 量单播传输方式下的信道质量和组播传输方式下的信道质量,或者仅仅测量单 播传输方式下的信道质量, 所述测量信息收发模块 12接收所述与本基站连接 的用户设备所测量到的信道质量信息。当所述辅助基站接收到所述测量配置信 息时, 所述辅助基站可以将所述测量配置信息下发到各自连接的用户设备, 并 接收由所述各自连接的用户设备上传的信道质量信息,所述测量信息收发模块 12可以接收所述辅助基站所上传的信道质量信息。
所述测量配置信息可以包括用户设备对信道质量的测量参数以及测量周 期。 当用户设备具有测量组播传输方式下的信道质量信息的能力时, 所述用户 设备对信道质量的测量参数可以包括单播传输方式下的信道质量的测量参数 以及组播传输方式下的信道质量的测量参数;当用户设备不具有测量组播传输 方式下的信道质量信息的能力时,所述用户设备对信道质量的测量参数可以包 括单播传输方式下的信道质量的测量参数。
其中,所述信道质量信息包括与本基站连接的用户设备的信道质量信息以 及与所述辅助基站连接的用户设备的信道质量信息;所述信道质量信息是用户 设备在单播传输方式下测量的 SINR ( Signal to Interference plus Noise Ratio ,信 号与干扰加噪声比参数), 或者是用户设备在单播传输方式和组播传输方式下 分别测量的 SINR信号与干扰加噪声比参数。
其中,与所述辅助基站连接的用户设备的信道质量信息是由与所述辅助基 站连接的用户设备根据所述辅助基站所发送的所述测量配置信息进行测量得 到的。
其中, 所述基站与各个辅助基站之间通过 Mesh ( Mesh , 无线网格网络) 互联通信。
所述决策模块 13 , 用于根据所述信道质量信息以及从传输转换装置中获 取到的视频业务信息生成决策信息,并将所述决策信息发送到所述传输转换装 置,以使所述传输转换装置根据所述决策信息通知单播业务网元控制视频数据 单播传输和 /或通知组播业务网元控制视频数据组播传输;
具体的, 所述决策模块 13根据所述信道质量信息以及从传输转换装置中 - - 获取到的视频业务信息可以生成决策信息,并将所述决策信息发送到所述传输 转换装置。所述决策信息包括视频数据的传输方式以及传输码率, 所述传输转 换装置可以将所述决策信息发送到单播业务网元和组播业务网元。此时, 所述 单播业务网元可以根据所述决策信息包括的视频数据的传输方式以及传输码 率, 对相应的 DASH视频数据以当前传输码率进行单播传输; 所述组播业务 网元可以根据所述决策信息包括的视频数据的传输方式以及传输码率,对相应 的 DASH视频数据以当前传输码率进行组播传输。 例如, 对于请求的用户数 量较少的视频数据就可以以单播传输方式进行传输;对于同一时间请求的用户 数量较多的视频数据就可以以组播传输方式进行传输,如以 MBSFN( Multicast Broadcast Single Frequency Network, 多播 /组播单频网络 )传输方式进行传输, 这种传输方式可以节约频率资源, 提高频谱利用率, 使得 DASH服务可以更 好的利用网络带宽等无线资源。
其中, 所述组播业务网元可以为 BM-SC ( Broadcast Multicast Service Center, 广播 /组播服务中心)网元。 所述传输转换装置为新增的用于对 DASH 服务进行单播、 组播转换的控制管理实体, 所述传输转换装置可以设置于 DASH Proxy网元或 BM-SC网元或 P-GW ( PDN gateway,公共数据网络网关) 等实体中。 由于所述传输转换装置为新增实体, 所以所述传输转换装置与基站 之间没有已定义的接口进行通信, 因此, 可以参考现有中的多媒体广播组播网 关与基站之间的接口, 该接口是一个纯用户面接口, 并且是基于 IP ( Internet Protocol, 网络协议) 网络的接口, 使所述传输转换装置与基站之间定义的接 口与多媒体广播组播网关与基站之间定义的接口相同。
所述视频业务信息包括用户设备请求的视频数据地址以及与所述视频数 据地址对应的视频码率等级信息,所述码率等级信息包括与视频数据对应的至 少一种码率。所述基站可以收集所述传输转换装置中的视频业务信息, 所述传 输转换装置是从单播业务网元中获取到所述视频业务信息;所述单播业务网元 在转发 DASH服务器给用户设备所回复的媒体表示描述时, 所述单播业务网 元通过截获解析所述媒体表示描述, 以获取到所述视频业务信息。 例如, 所述 - - 传输转换装置可以获取单播业务网元发送的用户设备请求的视频数据地址 url ( Uniform Resource Locator, 统一资源定位符)以及包括 688kbps、 1427kbps、 2056kbps的视频码率等级信息。
其中, 当用户设备可以测量单播以及组播的信道质量时, 所述决策模块 13 根据容量最大化规则、 所述信道质量信息以及从传输转换装置中获取到的 视频业务信息即可生成所述决策信息。当所述用户设备只能测量单播的信道质 量时, 所述决策模块 13可以根据容量最大化规则、 所述信道质量信息、 本基 站在组播传输方式下的信道质量以及从传输转换装置中获取到的视频业务信 息生成所述决策信息, 此时, 所述基站在组播传输方式下的用户设备覆盖率超 过预设的覆盖率阈值,例如: 所述基站以覆盖 95%以组播传输方式进行传输的 用户设备的信道质量作为组播的基准信噪比。
其中,所述容量最大化规则是指在一定的网络资源内让可以得到视频服务 的用户数量达到当前网络资源所能支持的最大值,并同时让用户得到的视频服 务质量达到当前网络资源所能支持的最大值;所述容量最大化规则可以根据消 耗的总资源大小和视频质量 PSNR ( Peak Signal-to-Noise Ratio, 峰值信噪比) 进行设置,即所述容量最大化规则可以对获得视频服务的用户数量和视频服务 质量进行均衡考虑,使用户数量和视频服务质量同时达到最大值。在选择传输 码率的时候,可以根据所述容量最大化规则使更多用户获得质量较好的视频服 务。
进一步的, 再请参见图 2, 为本发明实施例提供的一种决策模块 13的结 构示意图, 所述决策模块 13可以包括: 传输方式选择单元 131、 传输码率选 择单元 132、 决策发送单元 133;
所述传输方式选择单元 131 , 用于根据所述信道质量信息以及从传输转换 装置中获取到的视频业务信息选择视频数据的传输方式;
具体的,所述传输方式选择单元 131可以根据所述信道质量信息以及从传 输转换装置中获取到的视频业务信息选择视频数据的传输方式。其中, 所述传 输方式选择单元 131 可以根据所述信道质量信息分别计算出视频数据在单播 - - 传输方式下所消耗的总资源 ,以及该视频数据在组播传输方式下所消耗的总资 源,所述传输方式选择单元 131选择消耗的总资源较小者作为该视频数据的传 输方式。
所述传输码率选择单元 132, 用于根据所述信道质量信息以及从传输转换 装置中获取到的视频业务信息选择视频数据的传输码率;
具体的,在所述传输方式选择单元 131选择出对应的传输方式后, 所述传 输码率选择单元 132可以根据容量最大化规则、所述信道质量信息以及从传输 转换装置中获取到的视频业务信息选择视频数据的传输码率。 首先,所述传输 码率选择单元 132 可以根据所述信道质量信息分别计算每个视频数据在已选 择的传输方式下的与所述视频码率等级信息中每个码率对应的单位消耗资源, 继而所述传输码率选择单元 132可以根据各个视频数据中的各个 DASH码率 对应的视频质量 PSNR与对应消耗的单位消耗资源,选择出各个视频数据所对 应的传输方式的传输码率。 所述传输码率选择单元 132选择传输码率的目标 为: 尽可能先服务在每个 RB上带来更大 RSNR的业务或用户。
所述决策发送单元 133, 用于将携带有所述视频数据的传输方式和所述视 频数据的传输码率的决策信息发送到所述传输转换装置;
在所述传输方式选择单元 131和所述传输码率选择单元 132分别选择出对 应的传输方式和对应的传输码率后,所述决策发送单元 133可以将携带有所述 视频数据的传输方式和所述视频数据的传输码率的决策信息发送到所述传输 转换装置,以使所述传输转换装置可以将所述决策信息发送到单播业务网元和 组播业务网元。此时, 所述单播业务网元可以根据所述决策信息包括的视频数 据的传输方式以及传输码率, 对相应的 DASH视频数据以当前传输码率进行 单播传输;所述组播业务网元可以根据所述决策信息包括的视频数据的传输方 式以及传输码率, 对相应的 DASH视频数据以当前传输码率进行组播传输。 例如, 对于请求的用户数量较少的视频数据就可以以单播传输方式进行传输; 对于同一时间请求的用户数量较多的视频数据就可以以组播传输方式进行传 输, 如以 MBSFN传输方式进行传输, 这种传输方式可以节约频率资源, 提高 - - 频谱利用率, 使得 DASH服务可以更好的利用网络带宽等无线资源。
其中,所述信道质量信息可以包括用户设备在单播传输方式下测量的信号 与干扰力 p噪声比 ( Signal to interference plus Noise Ratio , 信号与干扰力口噪声比 参数)参数,以及用户设备在组播传输方式下测量的信号与干扰加噪声比参数; 或者,
所述信道质量信息包括用户设备在单播传输方式下测量的信号与干扰加 噪声比参数, 以及本基站在组播传输方式下的信道质量, 其中, 所述本基站在 组播传输方式下的用户设备覆盖率超过预设的覆盖率阈值。
进一步的, 再请参见图 3 , 为本发明实施例提供的一种传输方式选择单元 131的结构示意图, 所述传输方式选择单元 131可以包括: 参考码率选择子单 元 1311、 消耗资源计算子单元 1312、 传输方式选择子单元 1313;
所述参考码率选择子单元 1311 , 用于根据所述信道质量信息在所述视频 业务信息所包括的所述视频码率等级信息中选择视频数据在单播传输和组播 传输下均能满足的最低码率作为参考码率;
具体的, 所述参考码率选择子单元 1311可以根据所述信道质量信息在所 述视频业务信息所包括的所述视频码率等级信息中选择视频数据在单播传输 和组播传输下均能满足的最低码率作为参考码率。 例如, 对于某个视频数据, 其对应的视频码率等级信息中有 3种码率等级, 分别为等级 1、 等级 2、 等级 3 , 若等级 1的码率是该视频数据在单播传输和组播传输下均能满足的最低码 率, 则将等级 1的码率作为参考码率。
所述消耗资源计算子单元 1312, 用于计算在所述参考码率下单播传输方 式所消耗的第一总资源,并计算在所述参考码率下组播传输方式所消耗的第二 总资源;
对于某个视频数据, 所述消耗资源计算子单元 1312可以计算出在所述参 考码率下单播传输方式所消耗的第一总资源,并计算在所述参考码率下组播传 输方式所消耗的第二总资源。
所述传输方式选择子单元 1313 , 用于通过比较所述第一总资源和所述第 - - 二总资源, 选择所消耗的总资源最少的传输方式作为所述视频数据的传输方 式;
当所述传输方式选择子单元 1313通过比较得出某个视频数据在所述参考 码率下单播传输方式下所消耗的第一总资源比在组播传输方式下所消耗的第 二总资源少, 则所述传输方式选择子单元 1313选择单播传输方式来传输该视 频数据; 当所述传输方式选择子单元 1313通过比较得出某个视频数据在所述 参考码率下单播传输方式下所消耗的第一总资源比在组播传输方式下所消耗 的第二总资源多, 则所述传输方式选择子单元 1313选择组播传输方式来传输 该视频数据。
其中,所述信道质量信息可以包括用户设备在单播传输方式下测量的信号 与干扰加噪声比参数,以及用户设备在组播传输方式下测量的信号与干扰加噪 声比参数; 或者,
所述信道质量信息包括用户设备在单播传输方式下测量的信号与干扰加 噪声比参数, 以及本基站在组播传输方式下的信道质量, 其中, 所述本基站在 组播传输方式下的用户设备覆盖率超过预设的覆盖率阈值。
进一步的, 再请参见图 4, 为本发明实施例提供的一种传输码率选择单元 132的结构示意图, 所述传输码率选择单元 132可以包括: 单位消耗计算子单 元 1321、比值计算子单元 1322、排序遍历子单元 1323、比值选择子单元 1324、 传输码率选择子单元 1325;
所述单位消耗计算子单元 1321 , 用于根据所述信道质量信息和所述视频 业务信息所包括的所述视频码率等级信息,分别计算每个视频数据在已选择的 传输方式下的与所述视频码率等级信息中每个码率对应的单位消耗资源,所述 单位消耗资源是在每个时隙上所消耗的资源;
具体的, 所述单位消耗计算子单元 1321计算出的组播传输方式下的所述 单位消耗资源的值等于每个视频数据对应的各个 DASH码率与组播信道质量 对应的单位资源块的传输速率的比值, 其中, 所述组播信道质量为所述信道质 量信息中最小的组播信道质量。对于某个视频数据所对应的某个码率, 所述单 - - 位消耗计算子单元 1321计算出的单播传输方式下的所述单位消耗资源的值等 于该码率与各个单播信道质量对应的单位资源块的传输速率的比值的总和,所 述单播信道质量为各个请求该视频数据的用户设备在单播传输方式下的信道 质量。
所述比值计算子单元 1322, 用于分别计算每个视频数据在每种码率下的 峰值信噪比与对应的单位消耗资源的计算比值;
具体的,对于某个视频数据的某个 DASH码率,所述比值计算子单元 1322 计算出的所述计算比值为各个用户设备在该 DASH码率下的 PSNR峰值信噪 比的总和与各个用户设备对应的单位消耗资源的总和的比值。
所述排序遍历子单元 1323, 用于根据所述计算比值生成对各个码率对应 的各个视频数据的排序结果, 并按照从大到小的顺序对所述排序结果进行遍 历;
具体的, 所述排序遍历子单元 1323根据所述计算比值的数值大小, 对各 个码率对应的各个视频数据进行排序,并根据所述信道质量信息对所述排序结 果依次遍历。 例如, 分别有视频数据 A,B,C, 码率等级分别为 1,2,3, 所述排序 遍历子单元 1323根据所述计算比值按从大到小的顺序得到的排序结果可能为 Al , A2, Bl , C1 , A3, C2, C3, B3。
所述比值选择子单元 1324, 用于在遍历过程中选择出能够满足预设的资 源条件的最小计算比值;
具体的,所述预设的资源条件是组播传输方式所消耗的资源小于第一子帧 数量阈值,且组播传输方式和单播传输方式所消耗的总资源小于第二子帧数量 阈值。 例如, 所述资源条件为: 组播 RB 总量在选定的 6个子帧内, 且所有 RB总量在 1个帧 ( 10个子帧 ) 的范围内。 所述比值选择子单元 1324可以在 遍历过程中选择出能够满足预设的资源条件的最小计算比值。例如, 分别有视 频数据 A,B,C, 码率等级分别为 1,2,3, 所述排序遍历子单元 1323根据所述计 算比值按从大到小的顺序得到的排序结果可能为 Al , A2, Bl , C1 , A3, C2, C3, B3, 若 C1为能够满足预设的资源条件的最小计算比值, 则 Al , A2, B1 , - -
CI均能够满足预设的资源条件。
所述传输码率选择子单元 1325 , 用于根据大于或等于所述能够满足预设 的资源条件的最小计算比值所对应的视频数据,分别选择出各个视频数据所对 应的当前最大传输码率;
具体的, 所述传输码率选择子单元 1325可以根据大于或等于所述能够满 足预设的资源条件的最小计算比值所对应的视频数据,分别选择出各个视频数 据所对应的当前最大传输码率, 其中, 与各个视频数据的当前最大传输码率所 对应的计算比值均大于或等于所述能够满足预设的资源条件的最小计算比值。
例如, 分别有视频数据 A,B,C, 码率等级分别为 1,2,3 , 根据所述计算比值 按从大到小的顺序得到的排序结果可能为 Al , A2, B l , C1 , A3 , C2, C3 , B3 , 若 B视频数据对应的用户设备为 3个, 且 A视频数据以组播传输, B视 频数据以单播传输, C视频数据以组播传输, 则当 B 1满足资源条件时, 所述 传输码率选择子单元 1325选择 A视频数据的传输码率等级为 2; 对于 B视频 数据, 所述传输码率选择子单元 1325可以将 B视频数据对应的用户设备的传 输码率等级均设为 2,或者也可以先对 B视频数据对应的 3个用户设备的 3种 码率等级对应的 PSNR与单位消耗资源的比值进行从大到小排序,假设 3个用 户设备分别为 a、 b、 c , 则排序结果可能为 al、 bl、 cl、 a2、 b2、 c2、 a3、 b3、 c3 , 然后所述传输码率选择子单元 1325对排序结果进行遍历, 当检测到 b2满 足资源条件且 c2不能满足资源条件时,所述传输码率选择子单元 1325可以将 用户设备 a的码率等级设为 2, 将用户设备 b的码率等级设为 2, 并将用户设 备 c的码率等级设为 1 ; 若直至 C2才出现资源不能满足需求的情况, 由于 C 视频数据以组播传输, 这时所有 C视频数据的用户设备的传输码率只能满足 等级为 1的传输码率, 所有 A视频数据的用户设备的传输码率可以满足等级 为 3的传输码率, B视频数据的用户设备至少可以满足等级为 1的传输码率。
其中, 单位消耗计算子单元 1321、 比值计算子单元 1322、 排序遍历子单 元 1323、 比值选择子单元 1324以及传输码率选择子单元 1325所执行的所有 过程均是基于所述容量最大化规则进行执行,通过所述容量最大化规则进行传 - - 输码率的选择可以使更多用户获得质量较好的视频服务。
由上可见, 本发明实施例通过收集用户设备的信道质量信息、视频业务信 息, 并基于容量最大化规则可以生成决策信息,使得单播业务网元和组播业务 网元可以根据所述决策信息分别控制对应的 DASH视频数据进行单播传输或 组播传输, 因此, 具有单播、 组播混合传输方式的 DASH服务可以更好的利 用网络带宽等无线资源,并为用户提供更优的视频质量,以满足各类用户需求。
再请参见图 5, 为本发明实施例提供的另一种基站 1的结构示意图, 所述 基站 1可以包括上述图 1对应实施例中的确定模块 11、测量信息收发模块 12、 决策模块 13, 进一步的, 所述基站 1还可以包括: 视频信息获取模块 14、 更 新模块 15、 标识信息发送模块 16;
所述视频信息获取模块 14, 用于通过预设的基于 IP网络的接口从传输转 换装置中获取视频业务信息;
具体的,所述视频信息获取模块 14可以通过预设的基于 IP网络的接口从 传输转换装置中获取视频业务信息, 其中, 所述基于 IP网络的接口是用于连 接所述基站和所述传输转换装置的接口。 由于所述传输转换装置为新增实体, 所以所述传输转换装置与基站之间没有已定义的接口进行通信, 因此,可以参 考现有中的多媒体广播组播网关与基站之间的接口,该接口是一个纯用户面接 口, 并且是基于 IP网络的接口, 使所述传输转换装置与基站之间定义的接口 与多媒体广播组播网关与基站之间定义的接口相同。
所述视频业务信息包括用户设备请求的视频数据地址以及与所述视频数 据地址对应的视频码率等级信息,所述码率等级信息包括与视频数据对应的至 少一种码率。 所述视频信息获取模块 14可以收集所述传输转换装置中的视频 业务信息, 所述传输转换装置是从单播业务网元中获取到所述视频业务信息; 所述单播业务网元在转发 DASH服务器给用户设备所回复的媒体表示描述时, 所述单播业务网元通过截获解析所述媒体表示描述,以获取到所述视频业务信 息。例如, 所述传输转换装置可以获取单播业务网元发送的用户设备请求的视 频数据地址 url以及包括 688kbps、 1427kbps, 2056kbps的视频码率等级信息。 - - 所述更新模块 15, 用于当测量时间间隔达到所述测量配置信息所包含的 测量周期时,接收更新后的信道质量信息, 并对所述决策信息进行更新以便于 更新所述视频数据的传输码率;
具体的, 当所述更新模块 15测量时间间隔达到所述测量配置信息所包含 的测量周期时, 所述更新模块 15可以通过与本基站对应的用户设备以及辅助 基站重新收集信道质量信息, 使得所述更新模块 15可以接收到更新后的信道 质量信息, 并根据所述更新后的信道质量信息更新所述决策信息, 以便于 DASH视频数据在下一刻可以得到更新后的传输码率。
所述标识信息发送模块 16, 用于将主基站标识信息发送到所述传输转换 装置, 以使所述传输转换装置根据所述主基站标识信息确定本基站为主基站; 具体的, 在所述确定模块 11接收到所述选择结果时, 所述标识信息发送 模块 16可以通过将主基站标识信息发送到所述传输转换装置, 以使所述传输 转换装置可以根据所述主基站标识信息知道哪一个基站为主基站,以便于在后 续所述传输转换装置可以与主基站进行通信。
由上可见, 本发明实施例通过收集用户设备的信道质量信息、视频业务信 息, 并基于容量最大化规则可以生成决策信息,使得单播业务网元和组播业务 网元可以根据所述决策信息分别控制对应的 DASH视频数据进行单播传输或 组播传输, 因此, 具有单播、 组播混合传输方式的 DASH服务可以更好的利 用网络带宽等无线资源,并为用户提供更优的视频质量,以满足各类用户需求。
再请参见图 6, 为本发明实施例提供的又一种基站 1的结构示意图, 所述 基站 1可以包括处理器 1001、通信接口 1002和存储器 1003 (基站 1中的处理 器 1001的数量可以为一个或多个, 图 6中以一个处理器 1001为例)。 本发明 的一些实施例中, 处理器 1001、 通信接口 1002和存储器 1003可通过通信总 线或其他方式连接, 其中, 图 6以通过通信总线连接为例。
其中, 所述通信接口 1002, 用于与传输转换装置、 选择装置、 用户设备 以及辅助基站进行通信;
所述存储器 1003用于存储程序;
所述处理器 1001用于执行所述程序, 以实现 - - 当接收到选择装置发送的选择结果信息和用于指示用户设备进行信道质 量测试的测量配置信息时,根据所述选择结果确定本基站为主基站, 所述选择 结果包括所述选择装置选择出的主基站信息和辅助基站信息;
将所述测量配置信息发送到与本基站连接的用户设备和辅助基站,并接收 所述与本基站连接的用户设备和辅助基站根据所述测量配置信息反馈的与辅 助基站连接的用户设备的信道质量信息;
根据所述信道质量信息以及从传输转换装置中获取到的视频业务信息生 成决策信息, 并将所述决策信息发送到所述传输转换装置, 以使所述传输转换 装置根据所述决策信息通知单播业务网元控制视频数据单播传输和 /或通知组 播业务网元控制视频数据组播传输;
其中, 所述决策信息包括视频数据的传输方式以及传输码率。
其中, 所述处理器 1001还用于:
通过预设的基于 IP网络的接口从传输转换装置中获取视频业务信息; 其中,所述视频业务信息包括用户设备请求的视频数据地址以及与所述视 频数据地址对应的视频码率等级信息,所述码率等级信息包括与视频数据对应 的至少一种码率;
其中, 所述基于 IP网络的接口是用于连接所述基站和所述传输转换装置 的接口。
其中,与所述辅助基站连接的用户设备的信道质量信息是由与所述辅助基 站连接的用户设备根据所述辅助基站所发送的所述测量配置信息进行测量得 到的。
其中, 所述处理器 1001具体用于:
根据所述信道质量信息以及从传输转换装置中获取到的视频业务信息选 择视频数据的传输方式;
根据所述信道质量信息以及从传输转换装置中获取到的视频业务信息选 择视频数据的传输码率;
将携带有所述视频数据的传输方式和所述视频数据的传输码率的决策信 - - 息发送到所述传输转换装置。
其中, 所述处理器 1001具体用于:
根据所述信道质量信息在所述视频业务信息所包括的所述视频码率等级 信息中选择视频数据在单播传输和组播传输下均能满足的最低码率作为参考 码率;
计算在所述参考码率下单播传输方式所消耗的第一总资源,并计算在所述 参考码率下组播传输方式所消耗的第二总资源;
通过比较所述第一总资源和所述第二总资源,选择所消耗的总资源最少的 传输方式作为所述视频数据的传输方式。
其中, 所述处理器 1001具体用于:
根据所述信道质量信息和所述视频业务信息所包括的所述视频码率等级 信息,分别计算每个视频数据在已选择的传输方式下的与所述视频码率等级信 息中每个码率对应的单位消耗资源,所述单位消耗资源是在每个时隙上所消耗 的资源;
分别计算每个视频数据在每种码率下的峰值信噪比与对应的单位消耗资 源的计算比值;
根据所述计算比值生成对各个码率对应的各个视频数据的排序结果,并按 照从大到小的顺序对所述排序结果进行遍历;
在遍历过程中选择出能够满足预设的资源条件的最小计算比值; 根据大于或等于所述能够满足预设的资源条件的最小计算比值所对应的 视频数据, 分别选择出各个视频数据所对应的当前最大传输码率;
其中,与各个视频数据的当前最大传输码率所对应的计算比值均大于或等 于所述能够满足预设的资源条件的最小计算比值;
其中,所述预设的资源条件是组播传输方式所消耗的资源小于第一子帧数 量阈值,且组播传输方式和单播传输方式所消耗的总资源小于第二子帧数量阈 值。
其中,所述信道质量信息包括用户设备在单播传输方式下测量的信号与干 - - 扰加噪声比 (SINR )参数, 以及用户设备在组播传输方式下测量的信号与干 扰加噪声比参数; 或者,
所述信道质量信息包括用户设备在单播传输方式下测量的信号与干扰加 噪声比参数, 以及本基站在组播传输方式下的信道质量, 其中, 所述本基站在 组播传输方式下的用户设备覆盖率超过预设的覆盖率阈值。
其中, 所述处理器 1001还用于:
当测量时间间隔达到所述测量配置信息所包含的测量周期时,接收更新后 的信道质量信息,并对所述决策信息进行更新以便于更新所述视频数据的传输 码率。
其中, 所述处理器 1001还用于:
将主基站标识信息发送到所述传输转换装置,以使所述传输转换装置根据 所述主基站标识信息确定本基站为主基站。
由上可见, 本发明实施例通过收集用户设备的信道质量信息、视频业务信 息, 并基于容量最大化规则可以生成决策信息,使得单播业务网元和组播业务 网元可以根据所述决策信息分别控制对应的 DASH视频数据进行单播传输或 组播传输, 因此, 具有单播、 组播混合传输方式的 DASH服务可以更好的利 用网络带宽等无线资源,并为用户提供更优的视频质量,以满足各类用户需求。
请参见图 7, 为本发明实施例提供的一种传输转换装置 2的结构示意图, 所述传输转换装置 2可以包括: 获取模块 21、 视频信息发送模块 22、 决策信 息接收模块 23;
所述获取模块 21 , 用于获取单播业务网元的视频业务信息;
具体的,所述视频业务信息包括用户设备请求的视频数据地址以及与所述 视频数据地址对应的视频码率等级信息,所述码率等级信息包括与视频数据对 应的至少一种码率。 所述获取模块 21可以从单播业务网元中获取到所述视频 业务信息。 所述单播业务网元在转发 DASH服务器给用户设备所回复的媒体 表示描述时, 所述单播业务网元可以通过截获解析所述媒体表示描述, 以获取 到所述视频业务信息。例如, 所述传输转换装置 2可以获取单播业务网元发送 的用户设备请求的视频数据地址 url 以及包括 688kbps、 1427kbps, 2056kbps - - 的视频码率等级信息。
所述视频信息发送模块 22, 用于将所述视频业务信息发送到基站, 以使 所述基站根据所述视频业务信息、获取到的各个用户设备的信道质量信息生成 决策信息, 所述基站是由选择装置所选择出的主基站;
具体的,所述视频信息发送模块 22可以通过预设的基于 IP网络的接口将 所述视频业务信息发送到基站; 其中,所述视频业务信息包括用户设备请求的 级信息包括与视频数据对应的至少一种码率; 其中, 所述基于 IP网络的接口 是用于连接所述基站和所述传输转换装置 2的接口。
由于所述传输转换装置 2为新增实体,所以所述传输转换装置 2与基站之 间没有已定义的接口进行通信, 因此, 可以参考现有中的多媒体广播组播网关 与基站之间的接口, 该接口是一个纯用户面接口, 并且是基于 IP网络的接口, 使所述传输转换装置 2 与基站之间定义的接口与多媒体广播组播网关与基站 之间定义的接口相同。
所述视频信息发送模块 22将所述视频业务信息发送到所述基站后, 所述 基站可以根据所述视频业务信息、获取到的各个用户设备的信道质量信息以及 容量最大化规则生成决策信息,所述基站生成决策信息的具体实现过程可以参 见上述图 1至图 6所对应的实施例, 这里不再进行赘述。
所述决策信息接收模块 23, 用于接收所述基站发送的所述决策信息, 并 将所述决策信息分别发送到所述单播业务网元和组播业务网元,以使所述单播 业务网元和所述组播业务网元分别控制视频数据单播传输和控制视频数据组 播传输;
具体的, 在所述基站生成所述决策信息后, 所述决策信息接收模块 23可 以接收所述基站发送的所述决策信息,并将所述决策信息分别发送到所述单播 业务网元和组播业务网元,以使所述单播业务网元和所述组播业务网元分别控 制视频数据单播传输和控制视频数据组播传输。所述决策信息包括视频数据的 传输方式和视频数据的传输码率。此时, 所述单播业务网元可以根据所述决策 - - 信息包括的视频数据的传输方式以及传输码率, 对相应的 DASH视频数据以 当前传输码率进行单播传输;所述组播业务网元可以根据所述决策信息包括的 视频数据的传输方式以及传输码率, 对相应的 DASH视频数据以当前传输码 率进行组播传输。例如,对于请求的用户数量较少的视频数据就可以以单播传 输方式进行传输;对于同一时间请求的用户数量较多的视频数据就可以以组播 传输方式进行传输, 如以 MBSFN传输方式进行传输, 这种传输方式可以节约 频率资源, 提高频谱利用率, 使得 DASH服务可以更好的利用网络带宽等无 线资源。
其中, 所述单播业务网元可以为 DASH Proxy网元, 所述组播业务网元可 以为 BM-SC网元。所述传输转换装置 2为新增的用于对 DASH服务进行单播、 组播转换的控制管理实体,所述传输转换装置 2可以设置于 DASH Proxy网元 或 BM-SC网元或 P-GW等实体中。
由上可见, 本发明实施例通过收集用户设备的信道质量信息、视频业务信 息, 并基于容量最大化规则可以生成决策信息,使得单播业务网元和组播业务 网元可以根据所述决策信息分别控制对应的 DASH视频数据进行单播传输或 组播传输, 因此, 具有单播、 组播混合传输方式的 DASH服务可以更好的利 用网络带宽等无线资源,并为用户提供更优的视频质量,以满足各类用户需求。
再请参见图 8, 为本发明实施例提供的另一种传输转换装置 2的结构示意 图, 所述传输转换装置 2可以包括处理器 2001、通信接口 2002和存储器 2003 (传输转换装置 中的处理器 2001的数量可以为一个或多个, 图 8中以一个 处理器 2001为例)。 本发明的一些实施例中, 处理器 2001、 通信接口 2002和 存储器 2003可通过通信总线或其他方式连接, 其中, 图 8以通过通信总线连 接为例。
其中, 所述通信接口 2002, 用于与基站、 单播业务网元以及组播业务网 元进行通信;
所述存储器 2003用于存储程序;
所述处理器 2001用于执行所述程序, 以实现
获取单播业务网元的视频业务信息; - - 将所述视频业务信息发送到基站, 以使所述基站根据所述视频业务信息、 获取到的各个用户设备的信道质量信息生成决策信息,所述基站是由选择装置 所选择出的主基站;
接收所述基站发送的所述决策信息,并将所述决策信息分别发送到所述单 播业务网元和组播业务网元,以使所述单播业务网元和所述组播业务网元分别 控制视频数据单播传输和控制视频数据组播传输。
其中, 所述处理器 2001具体用于:
通过预设的基于 IP网络的接口将所述视频业务信息发送到基站; 其中,所述视频业务信息包括用户设备请求的视频数据地址以及与所述视 频数据地址对应的视频码率等级信息,所述码率等级信息包括与视频数据对应 的至少一种码率;
其中, 所述基于 IP网络的接口是用于连接所述基站和所述传输转换装置 2的接口。
其中, 所述决策信息包括视频数据的传输方式和视频数据的传输码率。 由上可见, 本发明实施例通过收集用户设备的信道质量信息、视频业务信 息, 并基于容量最大化规则可以生成决策信息,使得单播业务网元和组播业务 网元可以根据所述决策信息分别控制对应的 DASH视频数据进行单播传输或 组播传输, 因此, 具有单播、 组播混合传输方式的 DASH服务可以更好的利 用网络带宽等无线资源,并为用户提供更优的视频质量,以满足各类用户需求。
请参见图 9, 为本发明实施例提供的一种选择装置 3的结构示意图, 所述 选择装置 3可以包括: 选择结果生成模块 31、 选择结果发送模块 32;
所述选择结果生成模块 31 , 用于选择主基站和辅助基站, 并生成选择结 果, 所述选择结果包括主基站信息和辅助基站信息;
具体的, 所述选择装置 3可以为 MME网元或 MCE网元。 所述选择结果 生成模块 31可以选择主基站和辅助基站, 并生成选择结果, 所述选择结果包 括主基站信息和辅助基站信息。
所述选择结果生成模块 31可以包括: 第一选择单元, 用于在网络中随机 - - 选择其中一个基站为主基站, 并将所述网络中的其他基站作为辅助基站; 第二 选择单元, 用于在网络中选择连接有最多用户设备数量的基站作为主基站, 并 将所述网络中的其他基站作为辅助基站; 第三选择单元, 用于在网络中选择硬 件性能最好的基站作为主基站, 并将所述网络中的其他基站作为辅助基站。
所述选择结果发送模块 32, 用于将所述选择结果和用于指示用户设备进 行信道质量测试的测量配置信息发送到基站,以使所述基站根据所述选择结果 和测量配置信息获取信道质量信息以生成用于对视频数据进行单播传输和 /或 组播传输的决策信息;
所述选择结果发送模块 32还可以生成测量配置信息, 所述测量配置信息 中包括对单播和组播的信道质量的测量参数,或仅有对单播的信道质量的测量 参数, 所述测量配置信息还可以包括测量周期。 所述选择结果发送模块 32可 以将所述选择结果和测量配置信息发送到基站,以使所述基站根据所述选择结 果和测量配置信息获取信道质量信息以生成用于对视频数据进行单播传输和 / 或组播传输的决策信息, 其中, 所述基站是根据从传输转换装置中获取到的视 频业务信息、获取到的各个用户设备的信道质量信息以及容量最大化规则生成 决策信息, 并将所述决策信息分别发送到所述单播业务网元和组播业务网元, 以使所述单播业务网元和所述组播业务网元分别控制视频数据单播传输和控 制视频数据组播传输。其中,接收到所述选择结果的基站是与所述选择结果中 主基站信息对应的基站。所述基站生成决策信息的具体实现过程可以参见上述 图 1至图 6所对应的实施例, 这里不再进行赘述。
由上可见, 本发明实施例通过收集用户设备的信道质量信息、视频业务信 息, 并基于容量最大化规则可以生成决策信息,使得单播业务网元和组播业务 网元可以根据所述决策信息分别控制对应的 DASH视频数据进行单播传输或 组播传输, 因此, 具有单播、 组播混合传输方式的 DASH服务可以更好的利 用网络带宽等无线资源,并为用户提供更优的视频质量,以满足各类用户需求。
再请参见图 10, 为本发明实施例提供的另一种选择装置 3的结构示意图, 所述选择装置 3可以包括上述图 9对应实施例中的选择结果生成模块 31、 选 择结果发送模块 32, 进一步的, 所述选择装置 3还可以包括: 标识信息接收 - - 模块 33、 查找发送模块 34;
所述标识信息接收模块 33, 用于接收策略与计费规则功能(PCRF ) 网元 发送的与本选择装置 3对应的用户设备的标识信息和 ECGI;
所述查找发送模块 34,用于根据所述用户设备的标识信息和 ECGI查找到 与所述用户设备对应的基站, 并将所述用户设备的标识信息发送到对应的基 站;
具体的, 在所述选择结果发送模块 32发送选择结果之前, 所述标识信息 接收模块 33可以接收 PCRF策略与计费规则功能网元发送的与本选择装置 3 对应的用户设备的标识信息和 ECGI;并由所述查找发送模块 34根据所述用户 设备的标识信息和 ECGI查找到与所述用户设备对应的基站, 并将所述用户设 备的标识信息发送到对应的基站,使得各个基站在收集用户设备的信道质量信 息时,可以通知所接收到的所述用户设备的标识信息所指示的用户设备进行测 量, 其中, 所述用户设备的标识信息是指请求 DASH视频数据的用户设备的 标识信息。
其中, 所述用户设备的标识信息和 ECGI是由所述 PCRF策略与计费规则 功能网元根据单播业务网元发送的用户设备网络地址查找到的。
在所述标识信息接收模块 33接收到 PCRF网元发送的用户设备的标识信 息和 ECGI之前, 单播业务网元可以将已知的用户设备信息发送到所述 PCRF 网元,以使所述 PCRF网元可以根据所述用户设备信息查询对应的用户设备的 标识信息和 ECGI, 所述 PCRF网元根据所述用户设备的标识信息和 ECGI可 以查询到用户设备所处于的选择装置 3 并将所述用户设备的标识信息发送到 对应的选择装置 3中。 其中, 所述单播业务网元可以为 DASH Proxy网元。 例 如, 所述 DASH Proxy网元将用户设备的网络地址发送到所述 PCRF网元; 然 后所述 PCRF 网元根据所述用户设备的网络地址查询对应的用户设备的标识 信息和 ECGI, 并才艮据对应的用户设备的标识信息和 ECGI确定该用户设备所 在的 MME网元, 再通过月良务网关将所述对应的用户设备的标识信息和 ECGI 发送到所述 MME网元; 所述 MME网元中的所述标识信息接收模块 33根据 - - 网络中所有基站的标识信息确定每个用户设备的标识信息所对应的基站,并将 所述每个用户设备的标识信息发送到各自对应的基站中。
由上可见, 本发明实施例通过收集用户设备的信道质量信息、视频业务信 息, 并基于容量最大化规则可以生成决策信息,使得单播业务网元和组播业务 网元可以根据所述决策信息分别控制对应的 DASH视频数据进行单播传输或 组播传输, 因此, 具有单播、 组播混合传输方式的 DASH服务可以更好的利 用网络带宽等无线资源,并为用户提供更优的视频质量,以满足各类用户需求。
再请参见图 11 , 为本发明实施例提供的又一种选择装置 3的结构示意图, 所述选择装置 3可以包括处理器 3001、通信接口 3002和存储器 3003 (选择装 置 3中的处理器 3001的数量可以为一个或多个, 图 11中以一个处理器 3001 为例)。 本发明的一些实施例中, 处理器 3001、 通信接口 3002和存储器 3003 可通过通信总线或其他方式连接, 其中, 图 11以通过通信总线连接为例。
其中, 所述通信接口 3002, 用于与 PCRF策略与计费规则功能网元以及 基站进行通信;
所述存储器 3003用于存储程序;
所述处理器 3001用于执行所述程序, 以实现
选择主基站和辅助基站, 并生成选择结果, 所述选择结果包括主基站信息 和辅助基站信息;
将所述选择结果和用于指示用户设备进行信道质量测试的测量配置信息 发送到基站,以使所述基站根据所述选择结果和测量配置信息获取信道质量信 息以生成用于对视频数据进行单播传输和 /或组播传输的决策信息;
其中,所述基站根据所述信道质量信息以及从传输转换装置中获取到的视 频业务信息生成决策信息, 并将生成的决策信息发送到传输转换装置, 以使所 述传输转换装置根据所述决策信息通知单播业务网元控制视频数据单播传输 和 /或通知组播业务网元控制视频数据组播传输。
其中,接收到所述选择结果的基站是与所述选择结果中主基站信息对应的 基站。
其中, 所述处理器 3001具体用于: - - 在网络中随机选择其中一个基站为主基站,并将所述网络中的其他基站作 为辅助基站; 或者,
在网络中选择连接有最多用户设备数量的基站作为主基站,并将所述网络 中的其他基站作为辅助基站; 或者,
在网络中选择硬件性能最好的基站作为主基站,并将所述网络中的其他基 站作为辅助基站。
其中, 所述处理器 3001还用于:
接收 PCRF策略与计费规则功能网元发送的与本选择装置 3对应的用户设 备的标识信息和 ECGI;
根据所述用户设备的标识信息和 ECGI 查找到与所述用户设备对应的基 站, 并将所述用户设备的标识信息发送到对应的基站;
其中, 所述用户设备的标识信息和 ECGI是由所述 PCRF策略与计费规则 功能网元根据单播业务网元发送的用户设备网络地址查找到的。
由上可见, 本发明实施例通过收集用户设备的信道质量信息、视频业务信 息, 并基于容量最大化规则可以生成决策信息,使得单播业务网元和组播业务 网元可以根据所述决策信息分别控制对应的 DASH视频数据进行单播传输或 组播传输, 因此, 具有单播、 组播混合传输方式的 DASH服务可以更好的利 用网络带宽等无线资源,并为用户提供更优的视频质量,以满足各类用户需求。
请参见图 12, 为本发明实施例提供的一种视频数据传输的系统的结构示 意图,所述系统可以包括:基站 4001、传输转换装置 4002以及选择装置 4003; 基站 4001、 传输转换装置 4002以及选择装置 4003之间可以通过无线网络进 行通信, 其中, 所述基站 4001具体为图 1-图 6任一所示实施例的基站, 所述 传输转换装置 4002具体为图 7-图 8任一所示实施例的传输转换装置, 所述选 择装置 4003具体为图 9-图 11任一所示实施例的选择装置。
由上可见, 本发明实施例通过收集用户设备的信道质量信息、视频业务信 息, 并基于容量最大化规则可以生成决策信息,使得单播业务网元和组播业务 网元可以根据所述决策信息分别控制对应的 DASH视频数据进行单播传输或 - - 组播传输, 因此, 具有单播、 组播混合传输方式的 DASH服务可以更好的利 用网络带宽等无线资源,并为用户提供更优的视频质量,以满足各类用户需求。
请参见图 13, 为本发明实施例提供的一种视频数据传输的方法的流程示 意图, 所述方法包括:
S101 ,当基站接收到选择装置发送的选择结果信息和用于指示用户设备进 行信道质量测试的测量配置信息时,所述基站根据所述选择结果确定本基站为 主基站, 所述选择结果包括所述选择装置选择出的主基站信息和辅助基站信 具体的, 当基站接收到选择装置发送的选择结果信息和测量配置信息时, 所述基站根据所述选择结果确定本基站为主基站,同时所述基站还可以知道网 络中其他基站为辅助基站,所述选择结果包括所述选择装置根据选择规则选择 出的主基站信息和辅助基站信息。 其中, 所述选择装置可以为 MME 网元或 MCE网元。 所述选择规则可以为: 在网络中随机选择其中一个基站为主基站, 并将所述网络中的其他基站作为辅助基站; 或者,在网络中选择连接有最多用 户设备数量的基站作为主基站, 并将所述网络中的其他基站作为辅助基站。
在所述选择装置发送选择结果之前,所述选择装置可以根据 PCRF网元发 送的用户设备的标识信息和 ECGI, 查找与所述用户设备对应的基站, 并将所 述用户设备的标识信息发送到对应的基站,使得各个基站在收集用户设备的信 道质量信息时,可以通知所接收到的所述用户设备的标识信息所指示的用户设 备进行测量, 其中, 所述用户设备的标识信息是指请求 DASH视频数据的用 户设备的标识信息。
在所述选择装置接收到 PCRF网元发送的用户设备的标识信息和 ECGI之 前, 单播业务网元可以将已知的用户设备信息发送到所述 PCRF网元, 以使所 述 PCRF 网元可以根据所述用户设备信息查询对应的用户设备的标识信息和 ECGI ,所述 PCRF网元根据所述用户设备的标识信息和 ECGI可以查询到用户 设备所处于的选择装置并将所述用户设备的标识信息发送到对应的选择装置 中。其中,所述单播业务网元可以为 DASH Proxy网元。例如,所述 DASH Proxy - - 网元将用户设备的网络地址发送到所述 PCRF网元; 然后所述 PCRF网元根据 所述用户设备的网络地址查询对应的用户设备的标识信息和 ECGI, 并才艮据对 应的用户设备的标识信息和 ECGI确定该用户设备所在的 MME网元, 再通过 服务网关将所述对应的用户设备的标识信息和 ECGI发送到所述 MME网元; 所述 MME 网元根据网络中所有基站的标识信息确定每个用户设备的标识信 息所对应的基站, 并将所述每个用户设备的标识信息发送到各自对应的基站 中。
S102,所述基站将所述测量配置信息发送到与本基站连接的用户设备和辅 助基站,并接收所述与本基站连接的用户设备和辅助基站根据所述测量配置信 息反馈的与辅助基站连接的用户设备的信道质量信息;
具体的,所述测量配置信息可以包括用户设备对信道质量的测量参数以及 测量周期。 当用户设备具有测量组播传输方式下的信道质量信息的能力时, 所 述用户设备对信道质量的测量参数可以包括单播传输方式下的信道质量的测 量参数以及组播传输方式下的信道质量的测量参数;当用户设备不具有测量组 播传输方式下的信道质量信息的能力时,所述用户设备对信道质量的测量参数 可以包括单播传输方式下的信道质量的测量参数。
所述基站可以将所述测量配置信息发送到与本基站连接的用户设备和辅 助基站。 当与本基站连接的用户设备接收到所述测量配置信息时, 所述与本基 站连接的用户设备可以根据所述测量配置信息分别测量单播传输方式下的信 道质量和组播传输方式下的信道质量,或者仅仅测量单播传输方式下的信道质 量, 所述与本基站连接的用户设备将测量到的信道质量信息发送到所述基站。 当所述辅助基站接收到所述测量配置信息时,所述辅助基站可以将所述测量配 置信息下发到各自连接的用户设备,并接收由所述各自连接的用户设备上传的 信道质量信息, 所述辅助基站再将所上传的信道质量信息发送回所述基站中。
其中,所述信道质量信息包括与本基站连接的用户设备的信道质量信息以 及与所述辅助基站连接的用户设备的信道质量信息;所述信道质量信息是用户 设备在单播传输方式下测量的 SINR, 或者是用户设备在单播传输方式和组播 - - 传输方式下分别测量的 SINR信号与干扰加噪声比参数。
其中,与所述辅助基站连接的用户设备的信道质量信息是由与所述辅助基 站连接的用户设备根据所述辅助基站所发送的所述测量配置信息进行测量得 到的。
其中, 所述基站与各个辅助基站之间通过 Mesh互联通信。
S 103 , 所述基站根据所述信道质量信息以及从传输转换装置中获取到的 视频业务信息生成决策信息, 并将所述决策信息发送到所述传输转换装置; 具体的,所述基站根据所述信道质量信息以及从传输转换装置中获取到的 视频业务信息可以生成决策信息, 并将所述决策信息发送到所述传输转换装 置。所述决策信息包括视频数据的传输方式以及传输码率, 所述传输转换装置 可以将所述决策信息发送到单播业务网元和组播业务网元。此时, 所述单播业 务网元可以根据所述决策信息包括的视频数据的传输方式以及传输码率,对相 应的 DASH视频数据以当前传输码率进行单播传输; 所述组播业务网元可以 根据所述决策信息包括的视频数据的传输方式以及传输码率,对相应的 DASH 视频数据以当前传输码率进行组播传输。例如,对于请求的用户数量较少的视 频数据就可以以单播传输方式进行传输;对于同一时间请求的用户数量较多的 视频数据就可以以组播传输方式进行传输, 如以 MBSFN传输方式进行传输, 这种传输方式可以节约频率资源, 提高频谱利用率, 使得 DASH服务可以更 好的利用网络带宽等无线资源。
其中, 所述基站根据容量最大化规则确定传输码率, 所述容量最大化规则 是指在一定的网络资源内让可以得到视频服务的用户数量达到当前网络资源 所能支持的最大值,并同时让用户得到的视频服务质量达到当前网络资源所能 支持的最大值; 所述容量最大化规则可以根据消耗的总资源大小和视频质量 PSNR进行设置, 即所述容量最大化规则可以对获得视频服务的用户数量和视 频服务质量进行均衡考虑,使用户数量和视频服务质量同时达到最大值。在选 择传输码率的时候,可以根据所述容量最大化规则使更多用户获得质量较好的 视频 务。 - - 其中, 所述组播业务网元可以为 BM-SC网元。 所述传输转换装置为新增 的用于对 DASH服务进行单播、 组播转换的控制管理实体, 所述传输转换装 置可以设置于 DASH Proxy网元或 BM-SC网元或 P-GW等实体中。 由于所述 传输转换装置为新增实体,所以所述传输转换装置与基站之间没有已定义的接 口进行通信,因此,可以参考现有中的多媒体广播组播网关与基站之间的接口, 该接口是一个纯用户面接口, 并且是基于 IP网络的接口, 使所述传输转换装 置与基站之间定义的接口与多媒体广播组播网关与基站之间定义的接口相同。
所述视频业务信息包括用户设备请求的视频数据地址以及与所述视频数 据地址对应的视频码率等级信息,所述码率等级信息包括与视频数据对应的至 少一种码率。所述基站可以收集所述传输转换装置中的视频业务信息, 所述传 输转换装置是从单播业务网元中获取到所述视频业务信息;所述单播业务网元 在转发 DASH服务器给用户设备所回复的媒体表示描述时, 所述单播业务网 元通过截获解析所述媒体表示描述, 以获取到所述视频业务信息。 例如, 所述 传输转换装置可以获取单播业务网元发送的用户设备请求的视频数据地址 url 以及包括 688kbps、 1427kbps, 2056kbps的视频码率等级信息。
其中, 当用户设备可以测量单播以及组播的信道质量时, 所述基站根据容 量最大化规则、所述信道质量信息以及从传输转换装置中获取到的视频业务信 息即可生成所述决策信息。 当所述用户设备只能测量单播的信道质量时, 所述 基站可以根据容量最大化规则、所述信道质量信息、本基站在组播传输方式下 的信道质量以及从传输转换装置中获取到的视频业务信息生成所述决策信息, 此时, 所述基站在组播传输方式下的用户设备覆盖率超过预设的覆盖率阈值, 例如:所述基站以覆盖 95%以组播传输方式进行传输的用户设备的信道质量作 为组播的基准信噪比。
由上可见, 本发明实施例通过收集用户设备的信道质量信息、视频业务信 息, 并基于容量最大化规则可以生成决策信息,使得单播业务网元和组播业务 网元可以根据所述决策信息分别控制对应的 DASH视频数据进行单播传输或 组播传输, 因此, 具有单播、 组播混合传输方式的 DASH服务可以更好的利 - - 用网络带宽等无线资源,并为用户提供更优的视频质量,以满足各类用户需求。
再请参见图 14, 为本发明实施例提供的另一种视频数据传输的方法的流 程示意图, 所述方法包括:
S201 ,当基站接收到选择装置发送的选择结果信息和用于指示用户设备进 行信道质量测试的测量配置信息时,所述基站根据所述选择结果确定本基站为 主基站;
具体的, 当基站接收到选择装置发送的选择结果信息和测量配置信息时, 所述基站根据所述选择结果确定本基站为主基站,同时所述基站还可以知道网 络中其他基站为辅助基站,所述选择结果包括所述选择装置根据选择规则选择 出的主基站信息和辅助基站信息。 其中, 所述选择装置可以为 MME 网元或 MCE网元。 所述选择规则可以为: 在网络中随机选择其中一个基站为主基站, 并将所述网络中的其他基站作为辅助基站; 或者,在网络中选择连接有最多用 户设备数量的基站作为主基站, 并将所述网络中的其他基站作为辅助基站。
在所述选择装置发送选择结果之前,所述选择装置可以根据 PCRF网元发 送的用户设备的标识信息和 ECGI, 查找与所述用户设备对应的基站, 并将所 述用户设备的标识信息发送到对应的基站,使得各个基站在收集用户设备的信 道质量信息时,可以通知所接收到的所述用户设备的标识信息所指示的用户设 备进行测量, 其中, 所述用户设备的标识信息是指请求 DASH视频数据的用 户设备的标识信息。
在所述选择装置接收到 PCRF网元发送的用户设备的标识信息和 ECGI之 前, 单播业务网元可以将已知的用户设备信息发送到所述 PCRF网元, 以使所 述 PCRF 网元可以根据所述用户设备信息查询对应的用户设备的标识信息和 ECGI ,所述 PCRF网元根据所述用户设备的标识信息和 ECGI可以查询到用户 设备所处于的选择装置并将所述用户设备的标识信息发送到对应的选择装置 中。其中,所述单播业务网元可以为 DASH Proxy网元。例如,所述 DASH Proxy 网元将用户设备的网络地址发送到所述 PCRF网元; 然后所述 PCRF网元根据 所述用户设备的网络地址查询对应的用户设备的标识信息和 ECGI, 并才艮据对 - - 应的用户设备的标识信息和 ECGI确定该用户设备所在的 MME网元, 再通过 服务网关将所述对应的用户设备的标识信息和 ECGI发送到所述 MME网元; 所述 MME 网元根据网络中所有基站的标识信息确定每个用户设备的标识信 息所对应的基站, 并将所述每个用户设备的标识信息发送到各自对应的基站 中。
S202,所述基站将所述测量配置信息发送到与本基站连接的用户设备和辅 助基站,并接收所述与本基站连接的用户设备和辅助基站根据所述测量配置信 息反馈的与辅助基站连接的用户设备的信道质量信息;
具体的,所述测量配置信息可以包括用户设备对信道质量的测量参数以及 测量周期。 当用户设备具有测量组播传输方式下的信道质量信息的能力时, 所 述用户设备对信道质量的测量参数可以包括单播传输方式下的信道质量的测 量参数以及组播传输方式下的信道质量的测量参数;当用户设备不具有测量组 播传输方式下的信道质量信息的能力时,所述用户设备对信道质量的测量参数 可以包括单播传输方式下的信道质量的测量参数。
所述基站可以将所述测量配置信息发送到与本基站连接的用户设备和辅 助基站。 当与本基站连接的用户设备接收到所述测量配置信息时, 所述与本基 站连接的用户设备可以根据所述测量配置信息分别测量单播传输方式下的信 道质量和组播传输方式下的信道质量,或者仅仅测量单播传输方式下的信道质 量, 所述与本基站连接的用户设备将测量到的信道质量信息发送到所述基站。 当所述辅助基站接收到所述测量配置信息时,所述辅助基站可以将所述测量配 置信息下发到各自连接的用户设备,并接收由所述各自连接的用户设备上传的 信道质量信息, 所述辅助基站再将所上传的信道质量信息发送回所述基站中。
其中,所述信道质量信息包括与本基站连接的用户设备的信道质量信息以 及与所述辅助基站连接的用户设备的信道质量信息;所述信道质量信息是用户 设备在单播传输方式下测量的 SINR信号与干扰加噪声比参数, 或者是用户设 备在单播传输方式和组播传输方式下分别测量的 SINR信号与干扰加噪声比参 数。 - - 其中,与所述辅助基站连接的用户设备的信道质量信息是由与所述辅助基 站连接的用户设备根据所述辅助基站所发送的所述测量配置信息进行测量得 到的。
5203, 所述基站通过预设的基于 IP网络的接口从传输转换装置中获取视 频业务信息;
具体的, 所述基站可以通过预设的基于 IP网络的接口从传输转换装置中 获取视频业务信息, 其中, 所述基于 IP网络的接口是用于连接所述基站和所 述传输转换装置的接口。 由于所述传输转换装置为新增实体, 所以所述传输转 换装置与基站之间没有已定义的接口进行通信, 因此, 可以参考现有中的多媒 体广播组播网关与基站之间的接口, 该接口是一个纯用户面接口, 并且是基于 IP 网络的接口, 使所述传输转换装置与基站之间定义的接口与多媒体广播组 播网关与基站之间定义的接口相同。
所述视频业务信息包括用户设备请求的视频数据地址以及与所述视频数 据地址对应的视频码率等级信息,所述码率等级信息包括与视频数据对应的至 少一种码率。所述基站可以收集所述传输转换装置中的视频业务信息, 所述传 输转换装置是从单播业务网元中获取到所述视频业务信息;所述单播业务网元 在转发 DASH服务器给用户设备所回复的媒体表示描述时, 所述单播业务网 元通过截获解析所述媒体表示描述, 以获取到所述视频业务信息。 例如, 所述 传输转换装置可以获取单播业务网元发送的用户设备请求的视频数据地址 url 以及包括 688kbps、 1427kbps, 2056kbps的视频码率等级信息。
5204 ,所述基站根据所述信道质量信息以及从传输转换装置中获取到的视 频业务信 , ¾选择视频数据的传输方式;
具体的,所述基站可以根据所述信道质量信息以及从传输转换装置中获取 到的视频业务信息选择视频数据的传输方式。其中,所述基站可以根据所述信 道质量信息分别计算出视频数据在单播传输方式下所消耗的总资源,以及该视 频数据在组播传输方式下所消耗的总资源,所述基站选择消耗的总资源较小者 作为该视频数据的传输方式。 - -
5205 ,所述基站根据所述信道质量信息以及从传输转换装置中获取到的视 频业务信息选择视频数据的传输码率;
具体的,在所述基站选择出对应的传输方式后, 所述基站可以根据容量最 大化规则、所述信道质量信息以及从传输转换装置中获取到的视频业务信息选 择视频数据的传输码率。 首先, 所述基站可以根据所述信道质量信息分别计算 每个视频数据在已选择的传输方式下的与所述视频码率等级信息中每个码率 对应的单位消耗资源, 继而所述基站可以根据各个视频数据中的各个 DASH 码率对应的视频质量 PSNR与对应消耗的单位消耗资源,选择出各个视频数据 所对应的传输方式的传输码率。所述基站选择传输码率的目标为: 尽可能先服 务在每个 RB上带来更大 RSNR的业务或用户。
5206 ,所述基站将携带有所述视频数据的传输方式和所述视频数据的传输 码率的决策信息发送到所述传输转换装置;
在所述基站选择出对应的传输方式和对应的传输码率后,所述基站可以将 携带有所述视频数据的传输方式和所述视频数据的传输码率的决策信息发送 到所述传输转换装置,以使所述传输转换装置可以将所述决策信息发送到单播 业务网元和组播业务网元。此时,所述单播业务网元可以根据所述决策信息包 括的视频数据的传输方式以及传输码率, 对相应的 DASH视频数据以当前传 输码率进行单播传输;所述组播业务网元可以根据所述决策信息包括的视频数 据的传输方式以及传输码率, 对相应的 DASH视频数据以当前传输码率进行 组播传输。例如,对于请求的用户数量较少的视频数据就可以以单播传输方式 进行传输;对于同一时间请求的用户数量较多的视频数据就可以以组播传输方 式进行传输, 如以 MBSFN传输方式进行传输, 这种传输方式可以节约频率资 源, 提高频谱利用率, 使得 DASH服务可以更好的利用网络带宽等无线资源。
其中,所述信道质量信息可以包括用户设备在单播传输方式下测量的信号 与干扰加噪声比参数,以及用户设备在组播传输方式下测量的信号与干扰加噪 声比参数; 或者,
当用户设备只能测量单播传输的信道质量时,所述信道质量信息可以包括 - - 用户设备在单播传输方式下测量的信号与干扰加噪声比参数,以及本基站在组 播传输方式下的信道质量, 其中, 所述本基站在组播传输方式下的用户设备覆 盖率超过预设的覆盖率阈值。
本发明实施例提供的基站还可以当测量时间间隔达到所述测量配置信息 所包含的测量周期时,接收更新后的信道质量信息, 并对所述决策信息进行更 新以便于更新所述视频数据的传输码率;
具体的,当所述基站测量时间间隔达到所述测量配置信息所包含的测量周 期时,所述基站可以通过与本基站对应的用户设备以及辅助基站重新收集信道 质量信息,使得所述基站可以接收到更新后的信道质量信息, 并根据所述更新 后的信道质量信息更新所述决策信息, 以便于 DASH视频数据在下一刻可以 得到更新后的传输码率。
本发明实施例提供的基站还可以将主基站标识信息发送到所述传输转换 装置, 以使所述传输转换装置根据所述主基站标识信息确定本基站为主基站; 具体的,在所述基站接收到所述选择结果时, 所述基站可以通过将主基站 标识信息发送到所述传输转换装置,以使所述传输转换装置可以根据所述主基 站标识信息知道哪一个基站为主基站,以便于在后续所述传输转换装置可以与 主基站进行通信。
由上可见, 本发明实施例通过收集用户设备的信道质量信息、视频业务信 息, 并基于容量最大化规则可以生成决策信息,使得单播业务网元和组播业务 网元可以根据所述决策信息分别控制对应的 DASH视频数据进行单播传输或 组播传输, 因此, 具有单播、 组播混合传输方式的 DASH服务可以更好的利 用网络带宽等无线资源,并为用户提供更优的视频质量,以满足各类用户需求。
进一步, 再请参见图 15, 为本发明实施例提供的一种选择传输方式的方 法的流程示意图, 本发明实施例的所述方法可对应于上述图 14对应的实施例 中的 S204。 本发明实施例以选择传输方式进行说明。 本发明实施例的所述方 法具体包括:
S301 ,所述基站根据所述信道质量信息在所述视频业务信息所包括的所述 - - 视频码率等级信息中选择视频数据在单播传输和组播传输下均能满足的最低 码率作为参考码率;
具体的,所述基站可以根据所述信道质量信息在所述视频业务信息所包括 的所述视频码率等级信息中选择视频数据在单播传输和组播传输下均能满足 的最低码率作为参考码率。 例如, 对于某个视频数据, 其对应的视频码率等级 信息中有 3种码率等级, 分别为等级 1、 等级 2、 等级 3 , 若等级 1的码率是 该视频数据在单播传输和组播传输下均能满足的最低码率,则将等级 1的码率 作为参考码率。
5302, 所述基站计算在所述参考码率下单播传输方式所消耗的第一总资 源, 并计算在所述参考码率下组播传输方式所消耗的第二总资源;
对于某个视频数据,所述基站可以计算出在所述参考码率下单播传输方式 所消耗的第一总资源,并计算在所述参考码率下组播传输方式所消耗的第二总 资源。
5303 ,所述基站通过比较所述第一总资源和所述第二总资源,选择所消耗 的总资源最少的传输方式作为所述视频数据的传输方式;
当所述基站通过比较得出某个视频数据在所述参考码率下单播传输方式 下所消耗的第一总资源比在组播传输方式下所消耗的第二总资源少,则所述基 站选择单播传输方式来传输该视频数据;当所述基站通过比较得出某个视频数 据在所述参考码率下单播传输方式下所消耗的第一总资源比在组播传输方式 下所消耗的第二总资源多, 则所述基站选择组播传输方式来传输该视频数据。
其中,所述信道质量信息可以包括用户设备在单播传输方式下测量的信号 与干扰加噪声比参数,以及用户设备在组播传输方式下测量的信号与干扰加噪 声比参数; 或者,
所述信道质量信息包括用户设备在单播传输方式下测量的信号与干扰加 噪声比参数, 以及本基站在组播传输方式下的信道质量, 其中, 所述本基站在 组播传输方式下的用户设备覆盖率超过预设的覆盖率阈值。
本发明实施例通过信道质量信息可以选择出视频数据的传输方式, 使得 - -
DASH服务可以灵活地进行单播、 组播的混合传输。
进一步的, 再请参见图 16, 为本发明实施例提供的一种选择传输码率的 方法的流程示意图, 本发明实施例的所述方法可对应于上述图 14对应的实施 例中的 S205。 本发明实施例以选择传输码率进行说明。 本发明实施例的所述 方法具体包括:
5401 ,所述基站根据所述信道质量信息和所述视频业务信息所包括的所述 视频码率等级信息,分别计算每个视频数据在已选择的传输方式下的与所述视 频码率等级信息中每个码率对应的单位消耗资源,所述单位消耗资源是在每个 时隙上所消耗的资源;
具体的,所述基站计算出的组播传输方式下的所述单位消耗资源的值等于 每个视频数据对应的各个 DASH码率与组播信道质量对应的单位资源块的传 输速率的比值, 其中, 所述组播信道质量为所述信道质量信息中最小的组播信 道质量。对于某个视频数据所对应的某个码率, 所述基站计算出的单播传输方 式下的所述单位消耗资源的值等于该码率与各个单播信道质量对应的单位资 源块的传输速率的比值的总和,所述单播信道质量为各个请求该视频数据的用 户设备在单播传输方式下的信道质量。
5402,所述基站分别计算每个视频数据在每种码率下的峰值信噪比与对应 的单位消耗资源的计算比值;
具体的, 对于某个视频数据的某个 DASH码率, 所述基站计算出的所述 计算比值为各个用户设备在该 DASH码率下的 PSNR峰值信噪比的总和与各 个用户设备对应的单位消耗资源的总和的比值。
5403 ,所述基站根据所述计算比值生成对各个码率对应的各个视频数据的 排序结果, 并按照从大到小的顺序对所述排序结果进行遍历;
具体的, 所述基站根据所述计算比值的数值大小,对各个码率对应的各个 视频数据进行排序,并根据所述信道质量信息对所述排序结果依次遍历。例如, 分别有视频数据 A,B,C,码率等级分别为 1,2,3,所述基站根据所述计算比值按 从大到小的顺序得到的排序结果可能为 Al , A2, Bl , C1 , A3, C2, C3, B3。 - -
5404,所述基站在遍历过程中选择出能够满足预设的资源条件的最小计算 比值;
具体的,所述预设的资源条件是组播传输方式所消耗的资源小于第一子帧 数量阈值,且组播传输方式和单播传输方式所消耗的总资源小于第二子帧数量 阈值。 例如, 所述资源条件为: 组播 RB 总量在选定的 6个子帧内, 且所有 RB总量在 1个帧( 10个子帧)的范围内。 所述基站可以在遍历过程中选择出 能够满足预设的资源条件的最小计算比值。 例如, 分别有视频数据 A,B,C, 码 率等级分别为 1,2,3, 所述基站根据所述计算比值按从大到小的顺序得到的排 序结果可能为 Al , A2, Bl , C1 , A3, C2, C3, B3, 若 C1为能够满足预设 的资源条件的最小计算比值, 则 Al , A2, Bl , C1 均能够满足预设的资源条 件。
5405,所述基站根据大于或等于所述能够满足预设的资源条件的最小计算 比值所对应的视频数据, 分别选择出各个视频数据所对应的当前最大传输码 率;
具体的,所述基站可以根据大于或等于所述能够满足预设的资源条件的最 小计算比值所对应的视频数据,分别选择出各个视频数据所对应的当前最大传 输码率, 其中, 与各个视频数据的当前最大传输码率所对应的计算比值均大于 或等于所述能够满足预设的资源条件的最小计算比值。
例如, 分别有视频数据 A,B,C, 码率等级分别为 1,2,3, 根据所述计算比值 按从大到小的顺序得到的排序结果可能为 Al , A2, Bl , C1 , A3, C2, C3, B3, 若 B视频数据对应的用户设备为 3个, 且 A视频数据以组播传输, B视 频数据以单播传输, C视频数据以组播传输, 则当 B1满足资源条件时, 所述 基站选择 A视频数据的传输码率等级为 2; 对于 B视频数据, 所述基站可以 将 B视频数据对应的用户设备的传输码率等级均设为 2, 或者也可以先对 B 视频数据对应的 3个用户设备的 3种码率等级对应的 PSNR与单位消耗资源的 比值进行从大到小排序, 假设 3个用户设备分别为 a、 b、 c, 则排序结果可能 为 al、 bl、 cl、 a2、 b2、 c2、 a3、 b3、 c3, 然后所述基站对排序结果进行遍历, - - 当检测到 b2满足资源条件且 c2不能满足资源条件时,所述基站可以将用户设 备 a的码率等级设为 2, 将用户设备 b的码率等级设为 2, 并将用户设备 c的 码率等级设为 1; 若直至 C2才出现资源不能满足需求的情况, 由于 C视频数 据以组播传输,这时所有 C视频数据的用户设备的传输码率只能满足等级为 1 的传输码率, 所有 A视频数据的用户设备的传输码率可以满足等级为 3的传 输码率, B视频数据的用户设备至少可以满足等级为 1的传输码率。
其中, S401至 S405所执行的所有步骤均是基于所述容量最大化规则进行 执行,通过所述容量最大化规则进行传输码率的选择可以使更多用户获得质量 较好的视频服务。
本发明实施例通过信道质量信息可以选择出每个视频数据对应的传输方 式的传输码率, 使得 DASH服务可以更好的利用网络带宽等无线资源。
本发明实施例通过包括单播传输方式的信道质量的信道质量信息以及本 基站在组播传输方式下的信道质量可以选择出每个视频数据对应的传输方式 的传输码率,使得在用户设备不能收集组播信道质量时, DASH服务仍然可以 4艮好的利用网络带宽等无线资源。
再请参见图 17, 为本发明实施例提供的又一种视频数据传输的方法的流 程示意图, 所述方法包括:
5501 , 传输转换装置获取单播业务网元的视频业务信息;
具体的,所述视频业务信息包括用户设备请求的视频数据地址以及与所述 视频数据地址对应的视频码率等级信息,所述码率等级信息包括与视频数据对 应的至少一种码率。所述传输转换装置可以从单播业务网元中获取到所述视频 业务信息。 所述单播业务网元在转发 DASH服务器给用户设备所回复的媒体 表示描述时, 所述单播业务网元可以通过截获解析所述媒体表示描述, 以获取 到所述视频业务信息。例如, 所述传输转换装置可以获取单播业务网元发送的 用户设备请求的视频数据地址 url以及包括 688kbps、 1427kbps, 2056kbps的 视频码率等级信息。
5502,所述传输转换装置将所述视频业务信息发送到基站, 以使所述基站 - - 根据所述视频业务信息、 获取到的各个用户设备的信道质量信息生成决策信 息, 所述基站是由选择装置所选择出的主基站;
具体的, 所述传输转换装置可以通过预设的基于 IP网络的接口将所述视 频业务信息发送到基站; 其中, 所述视频业务信息包括用户设备请求的视频数 据地址以及与所述视频数据地址对应的视频码率等级信息,所述码率等级信息 包括与视频数据对应的至少一种码率; 其中, 所述基于 IP网络的接口是用于 连接所述基站和所述传输转换装置的接口。
由于所述传输转换装置为新增实体,所以所述传输转换装置与基站之间没 有已定义的接口进行通信, 因此,可以参考现有中的多媒体广播组播网关与基 站之间的接口, 该接口是一个纯用户面接口, 并且 ^^于 IP网络的接口, 使 所述传输转换装置与基站之间定义的接口与多媒体广播组播网关与基站之间 定义的接口相同。
所述传输转换装置将所述视频业务信息发送到所述基站后,所述基站可以 根据所述视频业务信息、获取到的各个用户设备的信道质量信息以及容量最大 化规则生成决策信息,所述基站生成决策信息的具体实现过程可以参见上述图 13至图 16所对应的方法实施例, 这里不再进行赘述。
S503,所述传输转换装置接收所述基站发送的所述决策信息, 并将所述决 策信息分别发送到所述单播业务网元和组播业务网元,以使所述单播业务网元 和所述组播业务网元分别控制视频数据单播传输和控制视频数据组播传输; 具体的,在所述基站生成所述决策信息后, 所述传输转换装置可以接收所 述基站发送的所述决策信息,并将所述决策信息分别发送到所述单播业务网元 和组播业务网元,以使所述单播业务网元和所述组播业务网元分别控制视频数 据单播传输和控制视频数据组播传输。所述决策信息包括视频数据的传输方式 和视频数据的传输码率。此时, 所述单播业务网元可以根据所述决策信息包括 的视频数据的传输方式以及传输码率, 对相应的 DASH视频数据以当前传输 码率进行单播传输;所述组播业务网元可以根据所述决策信息包括的视频数据 的传输方式以及传输码率, 对相应的 DASH视频数据以当前传输码率进行组 - - 播传输。例如,对于请求的用户数量较少的视频数据就可以以单播传输方式进 行传输;对于同一时间请求的用户数量较多的视频数据就可以以组播传输方式 进行传输,如以 MBSFN传输方式进行传输,这种传输方式可以节约频率资源, 提高频谱利用率, 使得 DASH服务可以更好的利用网络带宽等无线资源。
其中, 所述单播业务网元可以为 DASH Proxy网元, 所述组播业务网元可 以为 BM-SC网元。 所述传输转换装置为新增的用于对 DASH服务进行单播、 组播转换的控制管理实体,所述传输转换装置可以设置于 DASH Proxy网元或 BM-SC网元或 P-GW等实体中。
由上可见, 本发明实施例通过收集用户设备的信道质量信息、视频业务信 息, 并基于容量最大化规则可以生成决策信息,使得单播业务网元和组播业务 网元可以根据所述决策信息分别控制对应的 DASH视频数据进行单播传输或 组播传输, 因此, 具有单播、 组播混合传输方式的 DASH服务可以更好的利 用网络带宽等无线资源,并为用户提供更优的视频质量,以满足各类用户需求。
再请参见图 18, 为本发明实施例提供的又一种视频数据传输的方法的流 程示意图, 所述方法包括:
S601 , 选择装置选择主基站和辅助基站, 并生成选择结果, 所述选择结果 包括主基站信息和辅助基站信息;
具体的, 所述选择装置可以为 MME网元或 MCE网元。 所述选择装置选 择主基站和辅助基站的步骤可以包括:在网络中随机选择其中一个基站为主基 站, 并将所述网络中的其他基站作为辅助基站; 或者, 在网络中选择连接有最 多用户设备数量的基站作为主基站, 并将所述网络中的其他基站作为辅助基 站; 或者, 在网络中选择硬件性能最好的基站作为主基站, 并将所述网络中的 其他基站作为辅助基站。所述选择装置可以选择主基站和辅助基站, 并生成选 择结果, 所述选择结果包括主基站信息和辅助基站信息。
S602,所述选择装置将所述选择结果和用于指示用户设备进行信道质量测 试的测量配置信息发送到基站,以使所述基站根据所述选择结果和测量配置信 息获取信道质量信息以生成用于对视频数据进行单播传输和 /或组播传输的决 - - 策信息;
所述选择装置还可以生成测量配置信息,所述测量配置信息中包括对单播 和组播的信道质量的测量参数, 或仅有对单播的信道质量的测量参数, 所述测 量配置信息还可以包括测量周期。所述选择装置可以将所述选择结果和测量配 置信息发送到基站,以使所述基站根据所述选择结果和测量配置信息获取信道 质量信息以生成用于对视频数据进行单播传输和 /或组播传输的决策信息, 其 中, 所述基站是根据从传输转换装置中获取到的视频业务信息、获取到的各个 用户设备的信道质量信息以及容量最大化规则生成决策信息,并将所述决策信 息分别发送到所述单播业务网元和组播业务网元,以使所述单播业务网元和所 述组播业务网元分别控制视频数据单播传输和控制视频数据组播传输。所述基 站生成决策信息的具体实现过程可以参见上述图 13至图 16所对应的方法实施 例, 这里不再进行赘述。
所述选择装置接收 PCRF策略与计费规则功能网元发送的与本选择装置 对应的用户设备的标识信息和 ECGI;
所述选择装置根据所述用户设备的标识信息和 ECGI查找到与所述用户设 备对应的基站, 并将所述用户设备的标识信息发送到对应的基站;
具体的,在所述选择装置发送选择结果之前,所述选择装置可以根据 PCRF 网元发送的用户设备的标识信息和 ECGI, 查找与所述用户设备对应的基站, 并将所述用户设备的标识信息发送到对应的基站,使得各个基站在收集用户设 备的信道质量信息时,可以通知所接收到的所述用户设备的标识信息所指示的 用户设备进行测量, 其中, 所述用户设备的标识信息是指请求 DASH视频数 据的用户设备的标识信息。
其中, 所述用户设备的标识信息和 ECGI是由所述 PCRF策略与计费规则 功能网元根据单播业务网元发送的用户设备网络地址查找到的。
在所述选择装置接收到 PCRF网元发送的用户设备的标识信息和 ECGI之 前, 单播业务网元可以将已知的用户设备信息发送到所述 PCRF网元, 以使所 述 PCRF 网元可以根据所述用户设备信息查询对应的用户设备的标识信息和 - -
ECGI ,所述 PCRF网元根据所述用户设备的标识信息和 ECGI可以查询到用户 设备所处于的选择装置并将所述用户设备的标识信息发送到对应的选择装置 中。其中,所述单播业务网元可以为 DASH Proxy网元。例如,所述 DASH Proxy 网元将用户设备的网络地址发送到所述 PCRF网元; 然后所述 PCRF网元根据 所述用户设备的网络地址查询对应的用户设备的标识信息和 ECGI, 并才艮据对 应的用户设备的标识信息和 ECGI确定该用户设备所在的 MME网元, 再通过 服务网关将所述对应的用户设备的标识信息和 ECGI发送到所述 MME网元; 所述 MME 网元根据网络中所有基站的标识信息确定每个用户设备的标识信 息所对应的基站, 并将所述每个用户设备的标识信息发送到各自对应的基站 中。
由上可见, 本发明实施例通过收集用户设备的信道质量信息、视频业务信 息, 并基于容量最大化规则可以生成决策信息,使得单播业务网元和组播业务 网元可以根据所述决策信息分别控制对应的 DASH视频数据进行单播传输或 组播传输, 因此, 具有单播、 组播混合传输方式的 DASH服务可以更好的利 用网络带宽等无线资源,并为用户提供更优的视频质量,以满足各类用户需求。
下面对本发明提供的一种视频数据传输的方法的流程进行详细描述: 单播业务网元将获取到的用户设备信息发送到 PCRF网元;
所述 PCRF 网元根据所述用户设备信息查询对应的用户设备的标识信息 和 ECGI;
所述 PCRF将查询到的用户设备的标识信息和 ECGI发送到对应的选择装 置中;
所述选择装置根据所述用户设备的标识信息和 ECGI确定各个用户设备与 各个基站的对应关系;
所述选择装置根据所述对应关系将用户设备的标识信息发送到各个对应 的基站, 以便于各个基站可以知道自己连接有哪些请求 DASH视频数据的用 户设备;
所述选择装置选择主基站和辅助基站, 并生成选择结果, 并将所述选择结 - - 果和测量配置信息发送到所述选择结果中所指示的主基站;
所述单播业务网元将获取到的 DASH视频业务信息发送到传输转换装置; 所述主基站获取所述传输转换装置中的 DASH视频业务信息, 并根据所 述测量配置信息通知与所述主基站连接的请求 DASH视频数据的用户设备和 辅助基站收集信道质量信息;
所述主基站根据容量最大化规则、 所述信道质量信息以及所述 DASH视 频业务信息生成决策信息,并将所述决策信息发送到所述单播业务网元和组播 业务网元;
所述单播业务网元根据所述决策信息控制相应的 DASH视频数据以单播 传输方式进行传输;
所述组播业务网元根据所述决策信息控制相应的 DASH视频数据以组播 传输方式进行传输。
由上可见, 本发明实施例通过收集用户设备的信道质量信息、视频业务信 息, 并基于容量最大化规则可以生成决策信息,使得单播业务网元和组播业务 网元可以根据所述决策信息分别控制对应的 DASH视频数据进行单播传输或 组播传输, 因此, 具有单播、 组播混合传输方式的 DASH服务可以更好的利 用网络带宽等无线资源,并为用户提供更优的视频质量,以满足各类用户需求。
本发明实施例还提供了一种计算机存储介质, 其中,所述计算机存储介质 可存储有程序,该程序执行时包括上述图 13至图 16的方法实施例中记载的视 频数据传输的方法的部分或全部步骤。
本发明实施例还提供了另一种计算机存储介质, 其中, 所述计算机存储介 质可存储有程序, 该程序执行时包括上述图 17的方法实施例中记载的视频数 据传输的方法的部分或全部步骤。
本发明实施例还提供了又一种计算机存储介质, 其中, 所述计算机存储介 质可存储有程序, 该程序执行时包括上述图 18的方法实施例中记载的视频数 据传输的方法的部分或全部步骤。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程, 是可以通过计算机程序来指令相关的硬件来完成,所述的程序可存储于一计算 - - 机可读取存储介质中,该程序在执行时,可包括如上述各方法的实施例的流程。 其中,所述的存储介质可为磁碟、光盘、只读存储记忆体(Read-Only Memory, ROM )或随机存储记忆体(Random Access Memory, RAM )等。
以上所揭露的仅为本发明较佳实施例而已,当然不能以此来限定本发明之 权利范围,因此依本发明权利要求所作的等同变化,仍属本发明所涵盖的范围。

Claims

权利 要求
1、 一种基站, 其特征在于, 包括:
确定模块,用于当接收到选择装置发送的选择结果信息和用于指示用户设 备进行信道质量测试的测量配置信息时,根据所述选择结果确定本基站为主基 站, 所述选择结果包括所述选择装置选择出的主基站信息和辅助基站信息; 测量信息收发模块,用于将所述测量配置信息发送到与本基站连接的用户 设备和辅助基站,并接收所述与本基站连接的用户设备和辅助基站根据所述测 量配置信息反馈的与辅助基站连接的用户设备的信道质量信息;
决策模块,用于根据所述信道质量信息以及从传输转换装置中获取到的视 频业务信息生成决策信息, 并将所述决策信息发送到所述传输转换装置, 以使 所述传输转换装置根据所述决策信息通知单播业务网元控制视频数据单播传 输和 /或通知组播业务网元控制视频数据组播传输;
其中, 所述决策信息包括视频数据的传输方式以及传输码率。
2、 如权利要求 1所述的基站, 其特征在于, 还包括:
视频信息获取模块, 用于通过预设的基于 IP网络的接口从传输转换装置 中获取视频业务信息;
其中,所述视频业务信息包括用户设备请求的视频数据地址以及与所述视 频数据地址对应的视频码率等级信息,所述码率等级信息包括与视频数据对应 的至少一种码率;
其中, 所述基于 IP网络的接口是用于连接所述基站和所述传输转换装置 的接口。
3、 如权利要求 1或 2所述的基站, 其特征在于,
与所述辅助基站连接的用户设备的信道质量信息是由与所述辅助基站连 接的用户设备根据所述辅助基站所发送的所述测量配置信息进行测量得到的。
4、 如权利要求 3所述的基站, 其特征在于, 所述决策模块包括: 传输方式选择单元,用于根据所述信道质量信息以及从传输转换装置中获 取到的视频业务信 , ¾选择视频数据的传输方式;
传输码率选择单元,用于根据所述信道质量信息以及从传输转换装置中获 取到的视频业务信息选择视频数据的传输码率;
决策发送单元,用于将携带有所述视频数据的传输方式和所述视频数据的 传输码率的决策信息发送到所述传输转换装置。
5、 如权利要求 4所述的基站, 其特征在于, 所述传输方式选择单元包括: 参考码率选择子单元,用于根据所述信道质量信息在所述视频业务信息所 包括的所述视频码率等级信息中选择视频数据在单播传输和组播传输下均能 满足的最低码率作为参考码率;
消耗资源计算子单元,用于计算在所述参考码率下单播传输方式所消耗的 第一总资源, 并计算在所述参考码率下组播传输方式所消耗的第二总资源; 传输方式选择子单元, 用于通过比较所述第一总资源和所述第二总资源, 选择所消耗的总资源最少的传输方式作为所述视频数据的传输方式。
6、 如权利要求 5所述的基站, 其特征在于, 所述传输码率选择单元包括: 单位消耗计算子单元,用于根据所述信道质量信息和所述视频业务信息所 包括的所述视频码率等级信息,分别计算每个视频数据在已选择的传输方式下 的与所述视频码率等级信息中每个码率对应的单位消耗资源,所述单位消耗资 源是在每个时隙上所消耗的资源;
比值计算子单元,用于分别计算每个视频数据在每种码率下的峰值信噪比 与对应的单位消耗资源的计算比值;
排序遍历子单元,用于根据所述计算比值生成对各个码率对应的各个视频 数据的排序结果, 并按照从大到小的顺序对所述排序结果进行遍历; 比值选择子单元,用于在遍历过程中选择出能够满足预设的资源条件的最 小计算比值;
传输码率选择子单元,用于根据大于或等于所述能够满足预设的资源条件 的最小计算比值所对应的视频数据,分别选择出各个视频数据所对应的当前最 大传输码率;
其中,与各个视频数据的当前最大传输码率所对应的计算比值均大于或等 于所述能够满足预设的资源条件的最小计算比值;
其中,所述预设的资源条件是组播传输方式所消耗的资源小于第一子帧数 量阈值,且组播传输方式和单播传输方式所消耗的总资源小于第二子帧数量阈 值。
7、 如权利要求 4至 6任一项所述的基站, 其特征在于,
所述信道质量信息包括用户设备在单播传输方式下测量的信号与干扰加 噪声比 (SINR )参数, 以及用户设备在组播传输方式下测量的信号与干扰加 噪声比参数; 或者,
所述信道质量信息包括用户设备在单播传输方式下测量的信号与干扰加 噪声比参数, 以及本基站在组播传输方式下的信道质量, 其中, 所述本基站在 组播传输方式下的用户设备覆盖率超过预设的覆盖率阈值。
8、 如权利要求 4至 7任一项所述的基站, 其特征在于, 还包括: 更新模块,用于当测量时间间隔达到所述测量配置信息所包含的测量周期 时,接收更新后的信道质量信息, 并对所述决策信息进行更新以便于更新所述 视频数据的传输码率。
9、 如权利要求 1至 8任一项所述的基站, 其特征在于, 还包括: 标识信息发送模块, 用于将主基站标识信息发送到所述传输转换装置, 以 使所述传输转换装置根据所述主基站标识信息确定本基站为主基站。
10、 一种传输转换装置, 其特征在于, 包括:
获取模块, 用于获取单播业务网元的视频业务信息;
视频信息发送模块, 用于将所述视频业务信息发送到基站, 以使所述基站 根据所述视频业务信息、 获取到的各个用户设备的信道质量信息生成决策信 息, 所述基站是由选择装置所选择出的主基站;
决策信息接收模块, 用于接收所述基站发送的所述决策信息, 并将所述决 策信息分别发送到所述单播业务网元和组播业务网元,以使所述单播业务网元 和所述组播业务网元分别控制视频数据单播传输和控制视频数据组播传输。
11、 如权利要求 10所述的装置, 其特征在于, 所述视频信息发送模块具 体用于通过预设的基于 IP网络的接口将所述视频业务信息发送到基站;
其中,所述视频信息发送模块发送的所述视频业务信息包括用户设备请求 等级信息包括与视频数据对应的至少一种码率;
其中, 所述基于 IP网络的接口是用于连接所述基站和所述传输转换装置 的接口。
12、 如权利要求 10或 11所述的装置, 其特征在于, 所述决策信息包括视 频数据的传输方式和视频数据的传输码率。
13、 一种选择装置, 其特征在于, 包括:
选择结果生成模块, 用于选择主基站和辅助基站, 并生成选择结果, 所述 选择结果包括主基站信息和辅助基站信息;
选择结果发送模块,用于将所述选择结果和用于指示用户设备进行信道质 量测试的测量配置信息发送到基站,以使所述基站根据所述选择结果和测量配 置信息获取信道质量信息以生成用于对视频数据进行单播传输和 /或组播传输 的决策信息;
其中,接收到所述选择结果的基站是与所述选择结果中主基站信息对应的 基站。
14、 如权利要求 13所述的装置, 其特征在于, 所述选择结果生成模块包 括:
第一选择单元, 用于在网络中随机选择其中一个基站为主基站, 并将所述 网络中的其他基站作为辅助基站;
第二选择单元,用于在网络中选择连接有最多用户设备数量的基站作为主 基站, 并将所述网络中的其他基站作为辅助基站;
第三选择单元, 用于在网络中选择硬件性能最好的基站作为主基站, 并将 所述网络中的其他基站作为辅助基站。
15、 如权利要求 13或 14所述的装置, 其特征在于, 还包括:
标识信息接收模块, 用于接收策略与计费规则功能(PCRF ) 网元发送的 与本选择装置对应的用户设备的标识信息和全球唯一的小区标示( ECGI ); 查找发送模块,用于根据所述用户设备的标识信息和 ECGI查找到与所述 用户设备对应的基站, 并将所述用户设备的标识信息发送到对应的基站; 其中, 所述用户设备的标识信息和 ECGI是由所述 PCRF网元根据单播业 务网元发送的用户设备网络地址查找到的。
16、 一种基站, 其特征在于, 包括: 处理器、 通信接口和存储器, 其中, 所述通信接口, 用于与传输转换装置、 选择装置、 用户设备以及辅助基站 进行通信;
所述存储器用于存储程序;
所述处理器用于执行所述程序, 以实现
当接收到选择装置发送的选择结果信息和用于指示用户设备进行信道质 量测试的测量配置信息时,根据所述选择结果确定本基站为主基站, 所述选择 结果包括所述选择装置选择出的主基站信息和辅助基站信息;
将所述测量配置信息发送到与本基站连接的用户设备和辅助基站,并接收 所述与本基站连接的用户设备和辅助基站根据所述测量配置信息反馈的与辅 助基站连接的用户设备的信道质量信息;
根据所述信道质量信息以及从传输转换装置中获取到的视频业务信息生 成决策信息, 并将所述决策信息发送到所述传输转换装置, 以使所述传输转换 装置根据所述决策信息通知单播业务网元控制视频数据单播传输和 /或通知组 播业务网元控制视频数据组播传输;
其中, 所述决策信息包括视频数据的传输方式以及传输码率。
17、 如权利要求 16所述的基站, 其特征在于, 所述处理器还用于: 通过预设的基于 IP网络的接口从传输转换装置中获取视频业务信息; 其中,所述视频业务信息包括用户设备请求的视频数据地址以及与所述视 频数据地址对应的视频码率等级信息,所述码率等级信息包括与视频数据对应 的至少一种码率;
其中, 所述基于 IP网络的接口是用于连接所述基站和所述传输转换装置 的接口。
18、 如权利要求 16或 17所述的基站, 其特征在于,
与所述辅助基站连接的用户设备的信道质量信息是由与所述辅助基站连 接的用户设备根据所述辅助基站所发送的所述测量配置信息进行测量得到的。
19、 如权利要求 18所述的基站, 其特征在于, 所述处理器具体用于: 根据所述信道质量信息以及从传输转换装置中获取到的视频业务信息选 择视频数据的传输方式;
根据所述信道质量信息以及从传输转换装置中获取到的视频业务信息选 择视频数据的传输码率; 将携带有所述视频数据的传输方式和所述视频数据的传输码率的决策信 息发送到所述传输转换装置。
20、 如权利要求 19所述的基站, 其特征在于, 所述处理器具体用于: 根据所述信道质量信息在所述视频业务信息所包括的所述视频码率等级 信息中选择视频数据在单播传输和组播传输下均能满足的最低码率作为参考 码率;
计算在所述参考码率下单播传输方式所消耗的第一总资源,并计算在所述 参考码率下组播传输方式所消耗的第二总资源;
通过比较所述第一总资源和所述第二总资源,选择所消耗的总资源最少的 传输方式作为所述视频数据的传输方式。
21、 如权利要求 20所述的基站, 其特征在于, 所述处理器具体用于: 根据所述信道质量信息和所述视频业务信息所包括的所述视频码率等级 信息,分别计算每个视频数据在已选择的传输方式下的与所述视频码率等级信 息中每个码率对应的单位消耗资源,所述单位消耗资源是在每个时隙上所消耗 的资源;
分别计算每个视频数据在每种码率下的峰值信噪比与对应的单位消耗资 源的计算比值;
根据所述计算比值生成对各个码率对应的各个视频数据的排序结果,并按 照从大到小的顺序对所述排序结果进行遍历;
在遍历过程中选择出能够满足预设的资源条件的最小计算比值; 根据大于或等于所述能够满足预设的资源条件的最小计算比值所对应的 视频数据, 分别选择出各个视频数据所对应的当前最大传输码率;
其中,与各个视频数据的当前最大传输码率所对应的计算比值均大于或等 于所述能够满足预设的资源条件的最小计算比值;
其中,所述预设的资源条件是组播传输方式所消耗的资源小于第一子帧数 量阈值,且组播传输方式和单播传输方式所消耗的总资源小于第二子帧数量阈 值。
22、 如权利要求 19至 21任一项所述的基站, 其特征在于,
所述信道质量信息包括用户设备在单播传输方式下测量的信号与干扰加 噪声比 (SINR )参数, 以及用户设备在组播传输方式下测量的信号与干扰加 噪声比参数; 或者,
所述信道质量信息包括用户设备在单播传输方式下测量的信号与干扰加 噪声比参数, 以及本基站在组播传输方式下的信道质量, 其中, 所述本基站在 组播传输方式下的用户设备覆盖率超过预设的覆盖率阈值。
23、 如权利要求 19至 22任一项所述的基站, 其特征在于, 所述处理器还 用于:
当测量时间间隔达到所述测量配置信息所包含的测量周期时,接收更新后 的信道质量信息,并对所述决策信息进行更新以便于更新所述视频数据的传输 码率。
24、 如权利要求 16至 23任一项所述的基站, 其特征在于, 所述处理器还 用于:
将主基站标识信息发送到所述传输转换装置,以使所述传输转换装置根据 所述主基站标识信息确定本基站为主基站。
25、一种传输转换装置, 其特征在于, 包括: 处理器、通信接口和存储器, 其中,
所述通信接口, 用于与基站、 单播业务网元以及组播业务网元进行通信; 所述存储器用于存储程序;
所述处理器用于执行所述程序, 以实现
获取单播业务网元的视频业务信息; 将所述视频业务信息发送到基站, 以使所述基站根据所述视频业务信息、 获取到的各个用户设备的信道质量信息生成决策信息,所述基站是由选择装置 所选择出的主基站;
接收所述基站发送的所述决策信息,并将所述决策信息分别发送到所述单 播业务网元和组播业务网元,以使所述单播业务网元和所述组播业务网元分别 控制视频数据单播传输和控制视频数据组播传输。
26、 如权利要求 25所述的装置, 其特征在于, 所述处理器具体用于: 通过预设的基于 IP网络的接口将所述视频业务信息发送到基站; 其中,所述视频业务信息包括用户设备请求的视频数据地址以及与所述视 频数据地址对应的视频码率等级信息,所述码率等级信息包括与视频数据对应 的至少一种码率;
其中, 所述基于 IP网络的接口是用于连接所述基站和所述传输转换装置 的接口。
27、 如权利要求 25或 26所述的装置, 其特征在于, 所述决策信息包括视 频数据的传输方式和视频数据的传输码率。
28、 一种选择装置, 其特征在于, 包括: 处理器、 通信接口和存储器, 其 中,
所述通信接口, 用于与 PCRF策略与计费规则功能网元以及基站进行通 信;
所述存储器用于存储程序;
所述处理器用于执行所述程序, 以实现
选择主基站和辅助基站, 并生成选择结果, 所述选择结果包括主基站信息 和辅助基站信息;
将所述选择结果和用于指示用户设备进行信道质量测试的测量配置信息 发送到基站,以使所述基站根据所述选择结果和测量配置信息获取信道质量信 息以生成用于对视频数据进行单播传输和 /或组播传输的决策信息; 其中,接收到所述选择结果的基站是与所述选择结果中主基站信息对应的 基站。
29、 如权利要求 28所述的装置, 其特征在于, 所述处理器具体用于: 在网络中随机选择其中一个基站为主基站,并将所述网络中的其他基站作 为辅助基站; 或者,
在网络中选择连接有最多用户设备数量的基站作为主基站,并将所述网络 中的其他基站作为辅助基站; 或者,
在网络中选择硬件性能最好的基站作为主基站,并将所述网络中的其他基 站作为辅助基站。
30、 如权利要求 28或 29所述的装置, 其特征在于, 所述处理器还用于: 接收策略与计费规则功能( PCRF ) 网元发送的与本选择装置对应的用户 设备的标识信息和全球唯一的小区标示 (ECGI );
根据所述用户设备的标识信息和 ECGI 查找到与所述用户设备对应的基 站, 并将所述用户设备的标识信息发送到对应的基站;
其中, 所述用户设备的标识信息和 ECGI是由所述 PCRF网元根据单播业 务网元发送的用户设备网络地址查找到的。
31、 一种视频数据传输的方法, 其特征在于, 包括:
当基站接收到选择装置发送的选择结果信息和用于指示用户设备进行信 道质量测试的测量配置信息时,所述基站根据所述选择结果确定本基站为主基 站, 所述选择结果包括所述选择装置选择出的主基站信息和辅助基站信息; 所述基站将所述测量配置信息发送到与本基站连接的用户设备和辅助基 站,并接收所述与本基站连接的用户设备和辅助基站根据所述测量配置信息反 馈的与辅助基站连接的用户设备的信道质量信息; 所述基站根据所述信道质量信息以及从传输转换装置中获取到的视频业 务信息生成决策信息, 并将所述决策信息发送到所述传输转换装置, 以使所述 传输转换装置根据所述决策信息通知单播业务网元控制视频数据单播传输和 / 或通知组播业务网元控制视频数据组播传输;
其中, 所述决策信息包括视频数据的传输方式以及传输码率。
32、 如权利要求 31所述的方法, 其特征在于, 在所述基站根据所述信道 质量信息以及从传输转换装置中获取到的视频业务信息生成决策信息,并将所 述决策信息发送到所述传输转换装置的步骤之前, 还包括:
所述基站通过预设的基于 IP网络的接口从传输转换装置中获取视频业务 信息;
其中,所述视频业务信息包括用户设备请求的视频数据地址以及与所述视 频数据地址对应的视频码率等级信息,所述码率等级信息包括与视频数据对应 的至少一种码率;
其中, 所述基于 IP网络的接口是用于连接所述基站和所述传输转换装置 的接口。
33、 如权利要求 31或 32所述的方法, 其特征在于,
与所述辅助基站连接的用户设备的信道质量信息是由与所述辅助基站连 接的用户设备根据所述辅助基站所发送的所述测量配置信息进行测量得到的。
34、 如权利要求 33所述的方法, 其特征在于, 所述基站根据所述信道质 量信息以及从传输转换装置中获取到的视频业务信息生成决策信息,并将所述 决策信息发送到所述传输转换装置, 包括:
所述基站根据所述信道质量信息以及从传输转换装置中获取到的视频业 务信息选择视频数据的传输方式;
所述基站根据所述信道质量信息以及从传输转换装置中获取到的视频业 务信息选择视频数据的传输码率;
所述基站将携带有所述视频数据的传输方式和所述视频数据的传输码率 的决策信息发送到所述传输转换装置。
35、 如权利要求 34所述的方法, 其特征在于, 所述基站根据所述信道质 量信息以及从传输转换装置中获取到的视频业务信息选择视频数据的传输方 式, 包括:
所述基站根据所述信道质量信息在所述视频业务信息所包括的所述视频 码率等级信息中选择视频数据在单播传输和组播传输下均能满足的最低码率 作为参考码率;
所述基站计算在所述参考码率下单播传输方式所消耗的第一总资源,并计 算在所述参考码率下组播传输方式所消耗的第二总资源;
所述基站通过比较所述第一总资源和所述第二总资源,选择所消耗的总资 源最少的传输方式作为所述视频数据的传输方式。
36、 如权利要求 35所述的方法, 其特征在于, 所述基站根据所述信道质 量信息以及从传输转换装置中获取到的视频业务信息选择视频数据的传输码 率, 包括:
所述基站根据所述信道质量信息和所述视频业务信息所包括的所述视频 码率等级信息,分别计算每个视频数据在已选择的传输方式下的与所述视频码 率等级信息中每个码率对应的单位消耗资源,所述单位消耗资源是在每个时隙 上所消耗的资源;
所述基站分别计算每个视频数据在每种码率下的峰值信噪比与对应的单 位消耗资源的计算比值;
所述基站根据所述计算比值生成对各个码率对应的各个视频数据的排序 结果, 并按照从大到小的顺序对所述排序结果进行遍历;
所述基站在遍历过程中选择出能够满足预设的资源条件的最小计算比值; 所述基站根据大于或等于所述能够满足预设的资源条件的最小计算比值 所对应的视频数据, 分别选择出各个视频数据所对应的当前最大传输码率; 其中,与各个视频数据的当前最大传输码率所对应的计算比值均大于或等 于所述能够满足预设的资源条件的最小计算比值;
其中,所述预设的资源条件是组播传输方式所消耗的资源小于第一子帧数 量阈值,且组播传输方式和单播传输方式所消耗的总资源小于第二子帧数量阈 值。
37、 如权利要求 34至 36任一项所述的方法, 其特征在于,
所述信道质量信息包括用户设备在单播传输方式下测量的信号与干扰加 噪声比 (SINR )参数, 以及用户设备在组播传输方式下测量的信号与干扰加 噪声比参数; 或者,
所述信道质量信息包括用户设备在单播传输方式下测量的信号与干扰加 噪声比参数, 以及本基站在组播传输方式下的信道质量, 其中, 所述本基站在 组播传输方式下的用户设备覆盖率超过预设的覆盖率阈值。
38、 如权利要求 34至 37任一项所述的方法, 其特征在于, 还包括: 当测量时间间隔达到所述测量配置信息所包含的测量周期时,所述基站接 收更新后的信道质量信息,并对所述决策信息进行更新以便于更新所述视频数 据的传输码率。
39、 如权利要求 31至 38任一项所述的方法, 其特征在于, 还包括: 所述基站将主基站标识信息发送到所述传输转换装置,以使所述传输转换 装置根据所述主基站标识信息确定本基站为主基站。
40、 一种视频数据传输的方法, 其特征在于, 包括:
传输转换装置获取单播业务网元的视频业务信息; 所述传输转换装置将所述视频业务信息发送到基站,以使所述基站根据所 述视频业务信息、获取到的各个用户设备的信道质量信息生成决策信息,所述 基站是由选择装置所选择出的主基站;
所述传输转换装置接收所述基站发送的所述决策信息,并将所述决策信息 分别发送到所述单播业务网元和组播业务网元,以使所述单播业务网元和所述 组播业务网元分别控制视频数据单播传输和控制视频数据组播传输。
41、 如权利要求 40所述的方法, 其特征在于, 所述传输转换装置将所述 视频业务信息发送到基站, 包括:
所述传输转换装置通过预设的基于 IP网络的接口将所述视频业务信息发 送到基站;
其中,所述视频业务信息包括用户设备请求的视频数据地址以及与所述视 频数据地址对应的视频码率等级信息,所述码率等级信息包括与视频数据对应 的至少一种码率;
其中, 所述基于 IP网络的接口是用于连接所述基站和所述传输转换装置 的接口。
42、 如权利要求 40或 41所述的方法, 其特征在于, 所述决策信息包括视 频数据的传输方式和视频数据的传输码率。
43、 一种视频数据传输的方法, 其特征在于, 包括:
选择装置选择主基站和辅助基站, 并生成选择结果, 所述选择结果包括主 基站信息和辅助基站信息;
所述选择装置将所述选择结果和用于指示用户设备进行信道质量测试的 测量配置信息发送到基站,以使所述基站根据所述选择结果和测量配置信息获 取信道质量信息以生成用于对视频数据进行单播传输和 /或组播传输的决策信 其中,接收到所述选择结果的基站是与所述选择结果中主基站信息对应的 基站。
44、 如权利要求 43所述的方法, 其特征在于, 所述选择装置选择主基站 和辅助基站包括:
在网络中随机选择其中一个基站为主基站,并将所述网络中的其他基站作 为辅助基站; 或者,
在网络中选择连接有最多用户设备数量的基站作为主基站,并将所述网络 中的其他基站作为辅助基站; 或者,
在网络中选择硬件性能最好的基站作为主基站,并将所述网络中的其他基 站作为辅助基站。
45、 如权利要求 43或 44所述的方法, 其特征在于, 在所述选择装置根据 选择规则生成选择结果的步骤之前, 还包括:
所述选择装置接收策略与计费规则功能 (PCRF ) 网元发送的与本选择装 置对应的用户设备的标识信息和全球唯一的小区标示 ( ECGI );
所述选择装置根据所述用户设备的标识信息和 ECGI查找到与所述用户设 备对应的基站, 并将所述用户设备的标识信息发送到对应的基站;
其中, 所述用户设备的标识信息和 ECGI是由所述 PCRF网元根据单播业 务网元发送的用户设备网络地址查找到的。
46、 一种计算机存储介质, 其特征在于,
所述计算机存储介质可存储有程序, 该程序执行时包括如权利要求 31至 39任一项所述的步骤。
47、 一种计算机存储介质, 其特征在于,
所述计算机存储介质可存储有程序, 该程序执行时包括如权利要求 40至 42任一项所述的步骤。
48、 一种计算机存储介质, 其特征在于,
所述计算机存储介质可存储有程序, 该程序执行时包括如权利要求 43至 任一项所述的步骤。
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US20160359755A1 (en) 2016-12-08
JP2017513287A (ja) 2017-05-25
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