CN106034260A - Signaling supporting layered transmission and mechanism thereof - Google Patents
Signaling supporting layered transmission and mechanism thereof Download PDFInfo
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- CN106034260A CN106034260A CN201510117181.0A CN201510117181A CN106034260A CN 106034260 A CN106034260 A CN 106034260A CN 201510117181 A CN201510117181 A CN 201510117181A CN 106034260 A CN106034260 A CN 106034260A
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Abstract
The invention provides a signaling supporting layered transmission and a mechanism thereof. The signaling at least comprises the following information of dependence relation information and access information, wherein the dependence relation information provides dependence relations among contents belongs to one group; and the access information provides mapping relations of contents of different layers among layers in a system from top to bottom. In the invention, multilevel reuse can be supported, such as a system of an LDM technology. Through defining a new signaling, the dependence relations among different layers and the mapping relations in a protocol stack from top to bottom are given so that a user can effectively access and find a service needed by the user.
Description
Technical field
The present invention relates to multimedia delivery network technology, in particular it relates to multimedia is layered during a kind of future network merges
Transmission mechanism and signaling information etc..
Background technology
In multimedia delivery network system, there are various different physical layer transmission technology, such as broadcast transmission
ATSC3.0, NGB-W, DVB-T2/NGH, two-way communication technology such as broadband, mobile communication etc..Equally, upper strata
Also various different transport layer protocol is had to emerge in large numbers, such as MMT (MPEG Media Transport, ISO/IEC 23008-1),
FLUTE, RTP etc..When the upper layer transport protocol that these are different being applied in these different physical layer transmission technology,
How to provide each and every one service (program) every structure from upper strata to lower floor more at all levels and mapping relations so that user
/ terminal can find smoothly required service and smoothly access be an important topic.
In existing digital television broadcasting, the Various types of data including audio frequency and video is all by transmission stream (Transport
Stream, TS) form be packaged and transmit.Service is the most directly transmitted through packaging multiplexing, and level closes
It is simple and clear, by relevant Program Service Information data, can pass through when user accesses first to access these information datas,
Thus learnt which services, what access information is, thus effectively access.
Along with the development of technological evolvement Yu application, centered by IP, the data encapsulation of (IP-centric) obtains with transmission
Increasingly it is widely applied, is the necessary component of the multi-media transmission systems such as generation digital television broadcasting.Fig. 1 is
One application case.One complete multi-media transmission system, upper strata has various different service content by sealing from level to level
Dress packing is transmitted by IP, sends to finally by physical layer.In this process, each layer has different
Method for packing, the most separate, which an initial data, in which bag of each layer, connect finally by
Receive which signal just to receive and have access to required service, be we need solve problem.
Particularly, a media content can be in PLP in different physical layer pipe (Physical Layer Pipe)
Upper transmission.Such as, due to the introducing of LDM (Layered Division Multiplexing) technology, different signals can
To be sent by layering, such as, the superiors are the audio contents that robustness is best, and next layer is video content；The most such as,
The star turn that the superiors are, lower floor is the attached program that some are relevant to main program；Upper strata receives for mobile
HDTV, lower floor is the UHDTV of high-speed transfer.LDM technology requires first to decode upper layer data, and it from receiving letter
Remove in number, lower data could be obtained.
Summary of the invention
For defect of the prior art, it is an object of the invention to provide a kind of signaling supporting Delamination Transmission and mechanism,
Thus support effective access of user, find the service needed for user.
According to an aspect of the present invention, it is provided that a kind of signaling supporting Delamination Transmission, described signaling at least includes following
Information:
-dependency information, it is provided that belong to the dependence between the content of a group；
-access information, it is provided that the content of different layers mapping relations between system from top to bottom every layer.
Preferably, described dependency information signaling, it is provided that belong to the dependence between the content of a group, fixed
Justice is as follows:
Dependent_group_id has a group of dependence, belong to the services/programs of a dependence group/
Content component, has dependence in various degree between them；
The kind of Dependent_group_type definition group, is such as ' 0000 ' to produce due to the application of LDM technology
The group of raw dependence, ' 0001 ' is the group of the dependence produced due to the application of SVC technology, and will
The group of the dependence produced due to the application of other technology；
Dependent_layer_id be used for defining description object (service, program, content component, certain section of territory (as
MMTP/ROUTE session), certain IP flows (IP flow)) degree of dependence relation: 0, expression is top,
It is independent of other layer；N, represents the data depending on n-1 layer, and only after the data of n-1 layer are decoded acquisition, it is
Acquisition can be decoded.
Preferably, described access information, it is provided that the content of different layers mapping relations between system from top to bottom every layer,
Such that it is able to correct finding and accessing, i.e. rely on description object (service, program, content component, certain section of territory in group
(such as MMTP/ROUTE session), certain IP flows (IP flow)) in the upper transmission of any (several) individual PLP (PLP_id).
Particularly, if a content-data is on several PLP transmission, as a example by LDM, then need in signaling
LDM_GROUP_ID, the PLP_NUM belonged to including them, and the PLP_id of correspondence.
The present invention provides the mechanism of a kind of support Delamination Transmission using above-mentioned signaling:
-degree of dependence relation and access these fresh informations of information in certain position, such as can define new with unified definition
Layer 2 signaling are transmitted.
-can also be by the different content of information, as required, add different positions to and transmit, such as layer 2 signaling,
MP table, even physical layer, or top signaling, be used for describing this service, program, content component, certain section of territory (as
MMTP/ROUTE session), the affiliated group of dependence of certain IP stream (IP flow) and degree of dependence relation and the information of access.
Compared with prior art, the present invention has a following beneficial effect:
Have employed technical scheme, can support to use multilayer technique multiplex technique, such as LDM, SVC etc.
System, by the signaling of new definition, give the dependence between different layers data, enable a user to
Effectively access, find the service needed for user.
Accompanying drawing explanation
The detailed description made non-limiting example with reference to the following drawings by reading, other of the present invention is special
Levy, purpose and advantage will become more apparent upon:
Fig. 1 is medium transmission system case schematic diagram；
Fig. 2 is the transmission position case schematic diagram of new signaling information.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in detail.Following example will assist in those skilled in the art
Member is further appreciated by the present invention, but limits the present invention the most in any form.It should be pointed out that, the common skill to this area
For art personnel, without departing from the inventive concept of the premise, it is also possible to make some deformation and improvement.These broadly fall into
Protection scope of the present invention.
Chinese invention patent application: a kind of IP-based multimedia programming maps and accesses signaling and method
(CN20141038291.7) giving signaling and the mechanism of some relevant access, these signaling informations not only can lead to
Cross layer 2 signaling transmission, it is also possible to the signaling being added as needed on diverse location transmits.Such as by media content with
The map information of PLP is in MP table transmission, or defines specific message m essage MMTP and transmit；Layer 2 signaling,
Or transmit in layer 1 signaling.
In order to support the technology of LDM etc, need to define new signaling, be depicted by LDM different layers transmit each
Plant dependence between data, thus know and should first solve any layer data in varied situations, which layer data this takes；And
Provide each layer data and be mapped to the concrete mapping relations of PLP, thus know get from any (several) individual PLPs required
Layer data.
1, dependence
Definition Dependent_Group descriptor, is used for describing different service, MMTP/ROUTE session, IP
Dependence between flow (IP stream).This descriptor can be in diverse location transmission, such as layer 2 signaling,
MP table, even physical layer, or top signaling, be used for describing this service, program, content component, certain section of territory (as
MMTP/ROUTE session), certain IP stream (IP flow) is affiliated relies on group and degree of dependence relation.
| Syntax | Value | No.of bits | Mnemonic |
| Dependent_Group descriptor{ | |||
| descriptor_tag | 16 | uimsbf | |
| descriptor_length | 16 | uimsbf | |
| Dependent_group_id | 8 | uimsbf | |
| Dependent_group_type | 4 | uimsbf | |
| Dependent_layer_id | 4 | uimsbf | |
| } |
Dependent_group_id has a group of dependence.Belong to the services/programs of a dependence group/
Content component, has dependence in various degree between them.
The kind of Dependent_group_type definition group, is such as ' 0000 ' to produce due to the application of LDM technology
The group of raw dependence, ' 0001 ' is the group of the dependence produced due to the application of SVC technology, and in the future
The group of the dependence produced due to the application of other technology.
| Value | Realm type |
| 0000 | LDM |
| 0001 | SVC |
| Other | Retain |
Dependent_layer_id be used for defining description object (service, program, content component, certain section of territory (as
MMTP/ROUTE session), certain IP flows (IP flow)) degree of dependence relation:
0, expression is top, is independent of other layer；
N, represents the data depending on n 1 layer, and only after the data of n 1 layer are decoded acquisition, it just can be decoded and obtain
?.
2, information is accessed
The data of the different layers that composition relies on group can come from different local, except knowing their degree of dependence relation, also
It is to be appreciated that their access information, the particularly address mapping relation between host-host protocol different levels, such that it is able to
Correct finds and accesses.To this end, the mark/address mapping table between different agreement layer can be provided them.
When physical layer pipe PLP (Physical layer Pipe) is applied, it is to be appreciated that the description object relied in group (clothes
Business, program, content component, certain section of territory (such as MMTP/ROUTE session), certain IP flows (IP flow)) at which
The upper transmission of individual PLP (PLP_id).
Particularly, a description object can be divided in several PLP biography, then, these PLPs need to be referred to
Show.As a example by LDM:
3. the transmission position of new signaling information
These fresh informations can be with unified definition, in certain position, such as defines new layer 2 signaling and transmits.Can also be by
The different content of information, as required, adds different positions to and transmits, such as layer 2 signaling, MP table, even thing
Reason layer, or top signaling, be used for describing this service, program, content component, and certain section of territory is (such as MMTP/ROUTE
Session), group and degree of dependence relation and the information of access are relied on belonging to certain IP stream (IP flow).As shown in Figure 2.
Application example:
One program is by LDM technology, and by content multiplexing, upper strata is for the mobile HDTV received, and lower floor is high
The UHDTV of speed transmission.
So by methods herein, the upper and lower content of this program belongs to a dependent_group_id,
Dependent_group_type is LDM, has different dependent_id respectively, and its HDTV content at the middle and upper levels is
0, the UHDTV content of lower floor is that 1. the two contents can be respectively by different PLP, such as PLP_1, and PLP_2
Upper transmission.
According to these signaling informations, receiving terminal can selectively receive.For mobile subscriber, it can be only from PLP_1
The content viewing of upper reception HDTV；For fixing user, it can receive the content of PLP_1 and PLP_2 simultaneously.
Technical scheme can be for supporting multilayer multiplexing, such as the system of LDM technology, new by definition
Signaling, provides the dependence between different layers, and mapping relations from top to bottom in protocol stack, so that
Obtain user can effectively access, find the service needed for user.
Above the specific embodiment of the present invention is described.It is to be appreciated that the invention is not limited in
Stating particular implementation, those skilled in the art can make various deformation or amendment within the scope of the claims,
This has no effect on the flesh and blood of the present invention.
Claims (4)
1. the signaling supporting Delamination Transmission, it is characterised in that described signaling at least includes following information:
-dependency information, it is provided that belong to the dependence between the content of a group；
-access information, it is provided that the content of different layers mapping relations between system from top to bottom every layer.
The signaling of support Delamination Transmission the most according to claim 1, it is characterised in that described dependency information is believed
Order, it is provided that belong to the dependence between the content of a group:
√ Dependent_group_id has a group of dependence, belong to a dependence group service or
Program or content component, have dependence in various degree between them；
The kind of √ Dependent_group_type definition group, ' 0000 ' produces due to the application of LDM technology
The group of dependence, ' 0001 ' is the group of the dependence produced due to the application of SVC technology, and
The group of the dependence produced due to the application of other technology in the future；
√ Dependent_layer_id is for defining the degree of dependence relation of description object: 0, and expression is top, no
Rely on other layer；N, represents the data depending on n 1 layer, only after the data of n 1 layer are decoded acquisition,
It just can be decoded acquisition.
The signaling of support Delamination Transmission the most according to claim 1, it is characterised in that described access information, carries
The content of confession different layers mapping relations between system from top to bottom every layer, it is thus possible to correct finding and accessing, i.e. depend on
The description object of Lai Qunli above transmits at which or which PLP (PLP_id)；Particularly, if a content-data quilt
Divide and transmit on several PLP, then signaling needs include LDM_GROUP_ID, the PLP_NUM that they belong to,
And the PLP_id of correspondence.
4. one kind uses the transmission mechanism of signaling described in any one of the claims 1-3, it is characterised in that:
-described degree of dependence relation and access these fresh information unified definitions of information, transmit in certain position；
-or by the different content of information, as required, add different positions to and transmit, described diverse location is layer 2
Signaling, MP table, physical layer or top signaling, be used for describing this service, program, content component, certain section of territory,
Or belonging to certain IP stream, rely on group and degree of dependence relation and the information of access.
Priority Applications (1)
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|---|---|---|---|
| CN201510117181.0A CN106034260B (en) | 2015-03-17 | 2015-03-17 | Support the signaling and mechanism of Delamination Transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510117181.0A CN106034260B (en) | 2015-03-17 | 2015-03-17 | Support the signaling and mechanism of Delamination Transmission |
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| CN106034260A true CN106034260A (en) | 2016-10-19 |
| CN106034260B CN106034260B (en) | 2019-08-09 |
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Citations (6)
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| CN101180883A (en) * | 2005-04-13 | 2008-05-14 | 诺基亚公司 | Method, device and system for effectively coding and decoding of video data |
| CN101933260A (en) * | 2008-01-29 | 2010-12-29 | 诺基亚公司 | Physical layer and data link layer signalling in digital video broadcast preamble symbols |
| EP2362653A1 (en) * | 2010-02-26 | 2011-08-31 | Panasonic Corporation | Transport stream packet header compression |
| CN104041065A (en) * | 2012-10-17 | 2014-09-10 | 索尼公司 | Data processing device, data processing method, and program |
| CN104247436A (en) * | 2012-04-25 | 2014-12-24 | 三星电子株式会社 | Apparatus and method for transmitting and receiving signaling information in a digital broadcasting system |
| CN105323220A (en) * | 2014-07-10 | 2016-02-10 | 上海交通大学 | IP-based multimedia program mapping and access signaling and method |
-
2015
- 2015-03-17 CN CN201510117181.0A patent/CN106034260B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101180883A (en) * | 2005-04-13 | 2008-05-14 | 诺基亚公司 | Method, device and system for effectively coding and decoding of video data |
| CN101933260A (en) * | 2008-01-29 | 2010-12-29 | 诺基亚公司 | Physical layer and data link layer signalling in digital video broadcast preamble symbols |
| EP2362653A1 (en) * | 2010-02-26 | 2011-08-31 | Panasonic Corporation | Transport stream packet header compression |
| CN104247436A (en) * | 2012-04-25 | 2014-12-24 | 三星电子株式会社 | Apparatus and method for transmitting and receiving signaling information in a digital broadcasting system |
| CN104041065A (en) * | 2012-10-17 | 2014-09-10 | 索尼公司 | Data processing device, data processing method, and program |
| CN105323220A (en) * | 2014-07-10 | 2016-02-10 | 上海交通大学 | IP-based multimedia program mapping and access signaling and method |
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