CN103329555B

CN103329555B - For transmitting equipment and the method for multimedia frame in broadcast system

Info

Publication number: CN103329555B
Application number: CN201280005850.XA
Authority: CN
Inventors: 朴勍模; 黄承吾; 宋在涓
Original assignee: Samsung Electronics Co Ltd
Current assignee: Samsung Electronics Co Ltd
Priority date: 2011-01-19
Filing date: 2012-01-19
Publication date: 2016-11-30
Anticipated expiration: 2032-01-19

Abstract

Provide a kind of equipment and method for being transmitted multimedia frame in the broadcast system supporting multimedia service based on Internet Protocol by heterogeneous network.The method includes: produce header information, and described header information includes the information of the quality of the frame identifier for distinguishing multimedia frame and tolerance Connection Service between Internet and end to end network ability；Further, described header information and multi-medium data are combined to configure described multimedia frame.

Description

For transmitting equipment and the method for multimedia frame in broadcast system

Technical field

The present invention relates to a kind of equipment and method for transmitting multimedia frame in broadcast system.More specifically Ground, the present invention relates to a kind of in the broadcast system supporting multimedia service based on Internet Protocol Equipment and the method for multimedia frame is transmitted by heterogeneous network.

Background technology

Mobile motion picture expert group version 2 transmits stream (MPEG-2 TS) and is often used in radio network transmitting many matchmakers Internal appearance.MPEG-2 TS is used as the representativeness for transmitted bit stream (multiple coded video bit stream) Transmission technology, in this bitstream, the multiple broadcast program of multiplexing in having vicious transmission environment.Example As, MPEG-2 TS is adapted for the broadcast figure TV signal of multimedia era.

Fig. 1 illustrates the structure of the layer for supporting MPEG-2 TS according to prior art.

See Fig. 1, for supporting that the layer of MPEG-2 TS includes media coding layer 110, synchronizes (sync) Layer 120, transfer layer 130, Internet 140, data link layer 150 and physical layer 160.

Media coding layer 110 and layer, sync 120 is constructed: by this form, Ke Yi with following form The elementary cell of record or transmission readily uses media data.Transfer layer 130, Internet 140, number Record, in independent record medium, the lattice constructed by layer, sync 120 according to link layer 150 and physical layer 160 The data block (such as, " AU ") of formula or be configured to the multimedia frame of transmission.The multimedia frame configured leads to Cross predetermined network and be transferred to user terminal.

For this purpose, layer, sync 120 includes fragment block 122 and access unit 124.Transfer layer 130 Including MPEG-2 TS/MP4 132, RTP/HTTP 134 and UDP/TCP 136.

But, MPEG-2 TS is supporting there is several restriction in multimedia service.The restriction of MPEG-2 TS Including one-way communication, because the poor efficiency of transmission that causes of fixing frame sign and using Internet Protocol (IP) The generation of the unnecessary expense in the transmission with the host-host protocol being exclusively used in audio/video.

Therefore, in MPEG, newly proposed MPEG media transmission (MMT) standard is used as supporting The multimedia transport technology of multimedia service based on MPEG technology.MPEG proposes MMT standard, To overcome the restriction of MPEG-2 TS.

For example, it is possible to application MMT standard effectively to transmit mixed content by heterogeneous network.Mixed Co content represents have one group of content of multimedia element by video/audio/application.Heterogeneous network represents The network that wherein radio network and communication network coexist.

MMT standard is intended to limit the transmission technology closer to IP, and IP is in the biography for multimedia service Basic fundamental in defeated network.Therefore, MMT standard is at the multimedia service ring changed based on IP Border provides effective MPEG transmission technology, and its standardization is being carried out together with the research of continuation. Expecting a kind of method, the method is being intended to offer hybrid network and mixed content is many with MMT standard Media services environment provides effective MPEG transmission technology.

Summary of the invention

Technical problem

Each aspect of the present invention is at least processing the problems referred to above and/or shortcoming, and provides at following Advantage.Therefore, one aspect of the present invention is for providing a kind of method configuring multimedia frame, Ke Yitong Cross in the broadcast system supporting multimedia service based on Internet Protocol that to transmit this by heterogeneous network many Media frame.

Another aspect of the present invention is used for providing a kind of and configures based on for mixing based on MMT technology The most perhaps multimedia frame of the multi-medium data of blended service.

Another aspect of the present invention is used for providing one based on MMT technology according to mixed content or mixing Service is configured to the multimedia frame of the transmission of access unit (AU) and transmits the multimedia of described configuration The method of frame.

Another aspect of the present invention is for providing a kind of configuration to be made by the multimedia frame of heterogeneous network transmission Obtain header information and comprise frame identifier and in the broadcast supporting multimedia service based on Internet Protocol The information of the quality of system vacuum metrics Connection Service between Internet and end to end network ability.

Technical scheme

According to an aspect of the invention, it is provided based on Internet Protocol, one is supporting that multimedia takes The method configuring multimedia frame by heterogeneous network transmission in the broadcast system of business.Described method includes: Producing header information, described header information includes that the frame identifier for identifying multimedia frame and tolerance are at net The information of the quality of the Connection Service between network layers and end to end network ability；Further, described head is combined Mark information and multi-medium data are to configure described multimedia frame.

According to another aspect of the present invention, it is provided that one is supporting multimedia based on Internet Protocol The broadcast system of service configures the equipment of multimedia frame by heterogeneous network transmission.Described equipment includes: Multi-medium data generator, for producing multi-medium data according to mixed content or blended service；And, Multimedia frame dispensing unit, is used for producing header information, and described header information includes for distinguishing multimedia The quality of the frame identifier of frame and tolerance Connection Service between Internet and end to end network ability Information, and be used for combining described header information and multi-medium data to configure described multimedia frame.

According to another aspect of the present invention, it is provided that a kind of user terminal.Described user terminal includes: Communication unit, is used for sending and receive multimedia frame；Multi-medium data generator, for according in mixing Perhaps blended service produces multi-medium data；And, multimedia frame dispensing unit, it is used for producing head Information, and produce institute at least partially for based on described header information and described multi-medium data State multimedia frame, wherein, described header information include the frame identifier for identifying described multimedia frame and For identifying the service quality of the quality of the Connection Service between Internet and end to end network ability (QoS) information.

Therefore, the exemplary embodiment of the present invention provides blended service or mixed content by heterogeneous network, Make the effective MPEG transmission supported in multimedia environment.Meanwhile, according to the following present invention's Detailed description of illustrative embodiments implies or specifically discloses other various effects.

To those skilled in the art, from the demonstration disclosing the present invention carried out below in conjunction with the accompanying drawings The detailed description of property embodiment, other aspects of the present invention, advantage and marked feature will be clear from.

Accompanying drawing explanation

From combining the explained below that accompanying drawing is carried out, the certain exemplary embodiments of the present invention above and/ Or other aspects, features and advantages will be apparent from, in the accompanying drawings:

Fig. 1 illustrate according to prior art, for supporting that mobile motion picture expert group version 2 transmits stream (MPEG-2 The structure of layer TS)；

Fig. 2 be illustrate according to one exemplary embodiment of the present invention, by broadcast system based on MMT The view of the concept that MPEG media transmission (MMT) that standard provides services；

Fig. 3 illustrate according to one exemplary embodiment of the present invention, in MMT system according to logical Cross many service/content of heterogeneous network to transmit the structure of the layer of multimedia frame；And

Fig. 4 according to one exemplary embodiment of the present invention, wherein configuration multimedia frame and MMT system is transmitted the flow chart of the multimedia frame of this configuration.

Run through accompanying drawing, it should be noted that similar reference number is used for describing same or like element, feature And structure.

Detailed description of the invention

The description below of reference accompanying drawing is provided to aided synthesis and understands by claim and equivalents thereof The exemplary embodiment of the present invention limited.It includes the various details for assisting this understanding, but It is that these should be counted as being only exemplary.Therefore, one of ordinary skilled in the art may recognize that Arrive, exemplary enforcement described herein can be carried out in the case of without departing from scope and spirit of the present invention The various changes and modifications of example.It addition, for clarity and brevity, it is convenient to omit known function and structure Describe.

The term used in the following description and claims and vocabulary are not limited to bibliography implication, but only It is used so that the present invention can understand with consistent by inventor.Therefore, for the technology people in this area Member it should be understood that the description below of the exemplary embodiment of the present invention is provided to being merely cited for property mesh , rather than limit the present invention limited by appended claim and equivalents thereof.

It should be understood that singulative " " and " being somebody's turn to do " include plural number instruction, unless context understands Ground additionally instruction.Include for such surface it is therefoie, for example, quote for " parts surface " One or more quotes.

The exemplary embodiment of invention described below discusses mobile motion picture expert group version (MPEG) matchmaker The structure of the layer limited in body transmission (MMT) standard.And, the exemplary embodiment of the present invention proposes to join Put multimedia frame, and will be described in producing many for the structure of the layer to be limited by MMT standard The layer of media frame.Multimedia frame represents for the transmission frame of MMT service and dividing of MMT access unit Group.Multimedia frame includes the quality of service information relevant to required transmission information.

The exemplary embodiment of the present invention describe in further detail the header information for constituting multimedia frame Structure.The payload of multimedia frame can be replaced by many matchmakers with desired size by following manner The configuration of volume data: the multi-medium data that segmentation or combination provide in high level in units of predefined size.

Fig. 2 is to illustrate according to one exemplary embodiment of the present invention, by broadcast system (hereinafter referred to as " MMT system ") view of concept of MMT service that provides based on MMT standard.

Seeing Fig. 2, the content for MMT service can include UHD, video request program (VOD), show Field flow, file, widget, e-book and metadata.But, the content for MMT service can be wrapped Include any content can expressed with electronic signal.

The multi-medium data of each according to various contents is encapsulated in a predetermined format at MMT wrapper After, configure multimedia frame, and configured to user terminal transmission via mixing transmission by heterogeneous network Multimedia frame.Heterogeneous network represents the net with the wherein transmission environment that radio network and IP network coexist Network.

User terminal receives the multimedia frame transmitted by heterogeneous network with mixing transmission form, from multimedia Frame extracts the multi-medium data corresponding with desired content, and based on the multi-medium data extracted to user Video/audio/application is provided.Each corresponding with the video/audio/application provided for certain content is many Media data is defined as " MMT assets ".User terminal can include supporting multimedia service Any terminal.The representative illustration of user terminal can include IP TV or intelligent telephone set.Therefore, MMT Service can realize the purpose providing high-quality content transmission, mixed content support and hybrid network to support.

Fig. 3 illustrate according to one exemplary embodiment of the present invention, for logical in MMT network Cross the structure that heterogeneous network transmits the layer of multimedia frame according to many service/content.

See Fig. 3, need 7 layers of multimedia frame carrying out transmission configuration.These 7 layers include media coding layer 310, Encapsulated layer (hereinafter referred to as " layer E ") 320, transfer layer (hereinafter referred to as " layer D " or " layer T ") 330 or 390, Internet 340, data link layer 350, physical layer 360 and key-course (hereinafter referred to as " layer C ") 370 With 380.

Basis is produced according to multiple exemplary embodiments of the present invention, media coding layer 310 and layer E320 The multi-medium data of perhaps many services in Duo so that this two-layer can be regarded as " multi-medium data generating unit Point " unit.Multimedia frame is configured so that layer D300 can be regarded as " many by layer D330 Media frame configuration section " unit.The layer D330 included at multimedia frame configuration section includes head Information, and configure multimedia frame by combination header information and multi-medium data, this header information bag Containing frame identifier with for measuring the quality of the Connection Service between Internet and end to end network ability Required information.

It is important with three layers of corresponding technical area in these 7 layers for MMT standard.These three Technical area corresponds respectively to a layer E320, layer D330 and 390 and layer C370 and 380.Layer E320 Playing the part of the role producing mixed content, layer D330 and 390 is played the part of and is effectively transmitted by heterogeneous network The role of produced content, and, layer C370 and 380 plays the part of for the consumption pipe at mixed content The role of the general control in reason and transfer management.

Layer E320 includes MMT E.3 layer 322, MMT E.2 layer 324 and MMT E.1 layer 326. MMT E.3 layer 322 receives the input of the multi-medium data of the coding from media coding layer 310 offer, and And produce the data slot as the elementary cell serviced for MMT.MMT E.2 layer 324 based on by The data slot that MMT E.3 layer 322 produces produces the access unit (AU) for MMT service. MMT E.1 layer 326 is by being produced be used for by the combination of the MMT E.2 AU that layer 324 provides or division The generation of mixed content, the form storing and transmitting.

Layer D330 and 390 includes MMT D.1 layer 332, MMT D.2 layer 334 and MMT D.3 layer 390.MMT D.1 layer 332 is corresponding to performing and real time transport protocol (RTP) or HTTP (HTTP) application protocol (AP) of similar role.MMT D.2 layer 334 is corresponding to performing and user data Datagram protocol (UDP) or the network layer protocol of the similar role of transmission control protocol (TCP).MMT D.3 layer 390 execution are for the equivalent layer included at layer E320 with between the equivalent layer that layer D330 includes The operation optimized.

Layer C370 and 380 includes MMT C.1 layer 370 and MMT C.2 layer 380.MMT C.1 layer 370 provide about the generation of mixed content and the information of consumption, and MMT C.2 layer 380 provide about The information of the transmission of mixed content.

Fig. 4 according to one exemplary embodiment of the present invention, wherein configuration multimedia frame and The flow chart of the multimedia frame of transmission configuration in MMT system.Fig. 4 defines by layer shown in figure 3 In the operation that performs of the MMT D.2 layer 334 that includes of layer D330.

See Fig. 4, MMT D.2 layer 334 to receive in step 410 from the offer of MMT D.1 layer 332 The input of multi-medium data.Should provide from MMT D.1 layer 332 in being enough to provide blended service or mixing The multi-medium data held and the MMT assets being used for each multi-medium data.

MMT D.2 layer 334 is configured to configure the header information of multimedia frame in step 412.This head Mark information is including at least for distinguishing the frame identifier of multimedia frame and arriving in Internet and end for tolerance Information needed for the quality of the Connection Service between end network capabilities.Provide below for constructing header information More detailed description.

MMT D.2 layer 334 is configured to the multimedia frame of hybrid multimedia service in step 414.Logical Cross the multi-medium data that inputs in step 410 of combination and the header information constructed in step 412 is joined Put multimedia frame.After configuration multimedia frame, MMT passes through heterogeneous network the most in step 416 Carry out the multimedia frame to user terminal transmission configuration.

How describe below by being responsible for according to the MMT clothes proposed in an exemplary embodiment of the present invention Business transmits the layer T2 of multimedia frame to the method configuring multimedia frame (T frame).For multimedia frame (T frame) Configuration, it should limit the header information that will record in header region and to remember in payload region The multi-medium data of record.Moreover, it should ensure according to the exemplary embodiment of the present invention for multimedia The service quality (QoS) of frame (T frame).

Hold additionally, it should provide for the multimedia frame configured for the exemplary embodiment according to the present invention The method of row flow control.Should be by the flow control of the exemplary embodiment according to the present invention and QoS level The function provided by IP agreement is provided.

Finally, the exemplary embodiment of the present invention should limit the mistake of its middle level T2 and other layer of exchange information Journey and the content of information and the transmission method that are exchanged by this process are so that transmission AU.

Exemplary embodiment according to the present invention, to record in the header region of multimedia frame (T frame) Header information is defined as foloows.

Table 1 below illustrates the structure of multimedia frame.

[table 1]

Frame headers

Payload

As shown in table 1, multimedia frame has frame headers region and payload region.Frame headers region Needed for recording and being used for receiving multi-medium data according to the blended service/content transmitted by multimedia frame Header information corresponding to control information.Payload region records multimedia according to blended service/content Data.

Table 2 below is shown in the frame headers region that multimedia frame includes showing of the header information of record Example.

[table 2]

Table 2 shows the example of 64 bit header information.In this header information, by front 16 bits ( 0 to the 15th bit) indicate frame identifier.Indicated by the 2nd 16 bit (16-the 31st bit) By the length of the datagram that the multi-medium data of record in multimedia frame obtains or assembles.By the 3rd 16 bits (the 32nd to the 47th bit) indicate Flow_Label, and by the 4th 16 bit the (the 48th To the 63rd bit) indicate media access unit (MAU) abstracted information (MAU_Abstraction_Information)。

Frame identifier (Frame ID) is corresponding to the identification information of the multimedia frame (T frame) for distinguishing correspondence. Such as, when sending side divides multi-medium data and is sent the multimedia of division by multiple multimedia frames During data, frame identifier (Frame ID) may be used for being assembled multiple by reception side by multiple multimedia frames Multi-medium data.

Therefore, corresponding with the order of the multimedia frame sent index is used as frame identifier The example of (Frame ID).In some cases, frame identifier (Frame ID) is used as and assets or transmission Index corresponding to the identifier of multimedia frame.

The length of the length (Length) datagram corresponding to measuring in units of byte.Datagram refers to lead to Cross the packet obtained via the multi-medium data of one or more multimedia frames transmission.

For example, it is possible to send a datagram by the payload of a multimedia frame.Alternatively, One datagram can be divided into multiple multi-medium data block, and it is possible to by different multimedia frame Payload transmit the multi-medium data block being divided.

Therefore, receive side to be identified by the length of record in the header information of the multimedia frame received The length of the multi-medium data of record in the payload of the multimedia frame received, and then can identify Whether datagram is divided.Such as, when the length of record and record in payload in header information The length of multi-medium data identical time, receive side and the multi-medium data of record in payload regarded as Datagram.When in header information the length of record not with the multi-medium data of record in payload When length differs, receive side by receive multi-medium data with receive multi-medium data before or it In the payload of the multimedia frame of rear reception, the multi-medium data of record assembles, and acquisition has at head The datagram of the length of record in mark information.

Multiple datagram can be included in the payload of a multimedia frame.In this case, with In one payload, multiple services or the multi-medium data corresponding to content of record are separated from one another, and only Independent datagram is obtained by the multi-medium data separated, or, it may be considered that in header information The length of middle record and receive or it by the multi-medium data separated with before the multi-medium data separated After the combination of multi-medium data to be received obtain independent datagram.

Flow_Label identifies the specific QoS needed for each stream.Such as, Flow_Label can by with Act on the field identifying MAU.When Flow_Label is used as the field for identifying MAU, Can be limited 8 bits for indicating Flow_Label as shown in following table 3 to 7.

The ratio can expressed is defined by front 3 bits (the 1st to the 3rd bit) in following table 3 Special rate.The delay degree can expressed is defined by next bit (the 4th bit) in following table 4. The handling capacity can expressed is defined by next bit (the 5th bit) in following table 5.Following Table 6 defines as with the relation of other multimedia frame, expressed by next bit (the 6th bit) Synchronize.Latter two bit (the 7th to the 8th bit) is used as reservation bit, as at following table 7 Shown in.

[table 3]

Bit 0-2	Bit rate
		111	Constant bit rate (CBR)
110	Real-time variable bit rate (RT-VBR)
		101	Non-Real Time Variable Bit Rate (NRT-VBR)
100	Available Bit Rate (ABR)
		011	Unspecified bit rate (UBR)
010	Retain
		001	Retain
000	Retain

[table 4]

Bit 3	Postpone
		0	Normal delay
1	Low latency

[table 5]

Bit 4	Handling capacity
		0	Normal handling capacity
1	High-throughput

[table 6]

Bit 5	Synchronize
		0	Irrelevant
1	Relation with other T frame

[table 7]

Bit 6-7

Retain for future usage

MAU_Abstraction_Information provides the flexible and effective machine for accessing service class The abstracted information of system.Such as, when in network configuration connect time consult by One group of parameter that MAU_Abstraction_Information limits.This parameter for tolerance Internet with And the QoS of the connection between end to end network ability.Therefore, in the network, through consultation via full The particular value of the parameter that foot is limited by MAU_Abstraction_Information carrys out guaranteed qos.

Such as, MAU_Abstraction_Information the parameter limited can include postponing (scope) With AU loss rate (%).Postpone (scope) to represent when the maximum end-to-end delay of the transmission of multimedia frame Between, and represent that AU loss rate (5) represents that access unit loses than (AULR).The percentage ratio of AU represents The loss allowed.

Such as, when 5 bits are used for MAU_Abstraction_Information, compared by first three Special (the first to the 3rd bit) limits delay (scope), and, by ensuing 2 bits (the 4th to 5th bit) limit AU loss rate (%)

Table 8 below defines the delay (scope) as the maximum end-to-end delay time as defined above.

[table 8]

Bit 0-2	Postpone
		111	500ms
110	1 second
		101	5 seconds
100	10 seconds
		011	Do not limit
010
		001
000

Table 9 below defines the AU loss rate (5) as AULR as defined above.

[table 9]

Bit 3-4	AULR
		111	0%
110	10%
		101	20%
100	30%
		011	50%
010	Not specified
		001
000

In the above description, respectively described the structure of multimedia frame and included at multimedia frame Header region in the definition of header information of record and the example of structure.

Hereinafter, connect describing MMT D.2 layer application program based on the exemplary embodiment being used for the present invention Mouth (API) or type lengths values (TLV) communicate with MMT D.1 layer or MMT C.2 layer.

First, with reference to the communication with MMT D.1 layer, MMT D.1 layer is using the predetermined unit as AU Multi-medium data is provided to MMT D.2 layer.MMT D.1 layer provides the characteristic of AU to MMT D.2 layer, The characteristic of this AU is for ensureing the setting in the configuration of multimedia frame and many by MMT D.2 layer QoS in the transmission of media frame.

MMT C.2 layer configuration multimedia frame, and perform to communicate with providing multimedia to MMT D.2 layer Control information needed for the transmission of frame.Such as, MMT C.2 layer is come by the communication with MMT D.2 layer Session management information (SMI), monitoring session information (SMI) and error-control information is provided to MMT D.2 layer (ECI)。

MMT D.2 layer receives session management information from MMT C.2 layer, in order to management session control.This Time, session management information comprises self adaptation transmission and changes bang path.Such as, MMT D.2 layer-management Manage and bit rate, time delay and loss rate based on the session management information provided by MMT C.2 layer The relevant transmission of attribute.MMT D.2 layer manages information with MMT C.2 layer exchange session, in order to Hold management as above.Server can be based on that send to server, by client requests again Negotiation configuration or session modification message are modified to the transmission path of client computer.

MMT D.2 layer receives monitoring session (feedback) information from MMT C.2 layer, in order to monitor session.Example As, MMT D.2 layer can pass through Flow_Label (stream label) and MAU_Abitration_Information (MAU arbitration information) provides the information for monitoring session.Close Information time delay and loss rate is used as the parameter of monitoring.

MMT C.2 layer can be for forward error correction (FEC) or such as from the Wrong control of MMT D.2 layer Repeating transmission make request.MMT D.2 layer can configure multimedia frame so that when sending out from MMT C.2 layer When going out the request for error correction or Wrong control, MMT D.2 layer supports error correction or Wrong control.

Although illustrate and describing the present invention by reference to the certain exemplary embodiments of the present invention, but this Skilled person is it will be appreciated that limiting without departing from by appended claim and equivalents thereof The spirit and scope of the present invention in the case of, can carry out in form and details wherein various changes Become.

Claims

1. one kind in the broadcast system supporting multimedia service based on Internet Protocol configuration pass through isomery The method of the multimedia frame of network transmission, described method includes:

Produce header information, described header information include the frame identifier for identifying multimedia frame, about The information of the ability of the information of the quality of the Connection Service between Internet and tolerance end to end network；And

Combine described header information and multi-medium data to configure described multimedia frame,

Wherein, about the described information bag of described quality of the described Connection Service between described Internet Include the type information of media access unit abstracted information and media access unit.

Method the most according to claim 1, wherein, when configuring described multimedia frame, based on institute State the existence of fragment of multi-medium data to assign described frame identifier.

Method the most according to claim 1, wherein, described header information farther include about with Byte is the information of the length of the datagram of unit tolerance.

Method the most according to claim 1, wherein, the described type letter of described media access unit Breath includes about bit rate, delay degree, level of ability and the information of the relation with other multimedia frame, Further, wherein, described media access unit abstracted information includes the maximum end-to-end delay time and accesses single Unit's loss rate.

5. one kind in the broadcast system supporting multimedia service based on Internet Protocol configuration pass through isomery The equipment of the multimedia frame of network transmission, described equipment includes: multi-medium data generator, for basis Mixed content or blended service produce multi-medium data；And, multimedia frame dispensing unit, it is used for producing Raw header information, and it is used for combining described header information and multi-medium data to configure described multimedia frame, Described header information includes the frame identifier for identifying multimedia frame, takes about the connection between Internet The information of the quality of business and the information of the ability of tolerance end to end network,

Equipment the most according to claim 5, wherein, when configuring described multimedia frame, based on institute State the existence of fragment of multi-medium data to assign described frame identifier.

Equipment the most according to claim 5, described header information farther include about with byte be The information of the length of the datagram of metric unit.

Equipment the most according to claim 5, wherein, the described type letter of described media access unit Breath includes about bit rate, delay degree, level of ability and the information of the relation with other multimedia frame, Further, wherein, described media access unit abstracted information includes on maximum end-to-end delay and access unit Loss rate.

9. a user terminal, including: communication unit, it is used for sending and receive multimedia frame；Multimedia Data producer, for producing multi-medium data according to mixed content or blended service；And, many matchmakers Body frame dispensing unit, is used for producing header information, and for based on described header information and described many matchmakers Volume data produce described multimedia frame at least partially, wherein, described header information includes for knowing The frame identifier of the most described multimedia frame and for identifying between Internet and end to end network ability Service quality (QoS) information of the quality of Connection Service,

User terminal the most according to claim 9, wherein, described header information farther includes The length of datagram, described datagram is included in the described multi-medium data that described multimedia frame includes Described at least partially.

11. user terminals according to claim 9, it is at, the abstract letter of described media access unit Breath includes: for the maximum end-to-end delay time of the transmission of described multimedia frame；And, access unit Loss is than (AULR).