CN101442521A - Method for encapsulating, sending and receiving mobile multimedia broadcast data - Google Patents
Method for encapsulating, sending and receiving mobile multimedia broadcast data Download PDFInfo
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- CN101442521A CN101442521A CNA2007101873556A CN200710187355A CN101442521A CN 101442521 A CN101442521 A CN 101442521A CN A2007101873556 A CNA2007101873556 A CN A2007101873556A CN 200710187355 A CN200710187355 A CN 200710187355A CN 101442521 A CN101442521 A CN 101442521A
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Abstract
The invention relates to a method for encapsulating, transmitting and receiving mobile multimedia broadcast data. The encapsulation method comprises: A, splitting service data corresponding to a multimedia broadcasting service or a multimedia broadcasting channel into a plurality of service data segments; B, encapsulating the service data segments into service data IP packages by an IP protocol, and encapsulating various service data IP packages into service data link layer protocol packages by a link layer protocol; and C, multiplexing the service data link layer protocol packages on time slots of a service logical channel, and forming a broadcast channel frame with time slots of a control logical channel. The method makes a receiving end capable of correctly receiving the service data IP packages transmitted on the service logical channel and directly submitting the received service data IP packages to a corresponding IP-based processing program by encapsulating service data into the IP packages and further encapsulating the IP packages by the link layer protocol, so as to improve the service promotion speed and reduce the service development and use cost.
Description
Technical field
The present invention relates to a kind of mobile multi-media broadcasting data encapsulation, sending and receiving method.
Background technology
In recent years, digital mobile multimedia broadcasting technology and standard evolution are rapid, Ou Zhou DVB-H (Digital Video Broadcast Handheld for example, the digital video broadcast-handheld formula receives), the MediaFLO of the U.S. (Media Forward Link Only, the single forward link of medium) and China Mobile multimedia broadcasting (China Mobile Multimedia Broadcasting, be called for short CMMB) etc., all adopt the One-to-All Broadcast mode to provide multiple service content for the terminal use, if advertisement, weather forecast, news, sports cast, variety, the multimedia broadcasting play, programs such as film, the user can select the service content of Mobile Multimedia Broadcasting according to the hobby of oneself.
The CMMB technology is the China mobile multi-media broadcasting technology that latest development is got up, wherein the broadcast channel frame duration is 1 second, per 25 milliseconds is a time slot, each broadcast channel frame has 40 time slots, in order to save the receiving terminal power consumption, adopt time division way to send multimedia broadcast business data, mobile multi-media broadcasting service takies one or more time slot, and transmits in the independent time slot of mobile multimedia broadcast system control information by control logic channel place.
Each Mobile Multimedia Broadcasting instrument factory commercial city is the packet that business datum is encapsulated as privately owned form at present, sends packet to terminal by Traffic Channel.The advantage that transmits with privately owned form encapsulated data packet is that each manufacturer can reduce overhead information according to the dissimilar self-defined various packet encapsulation forms of business.But,, data of different types cladding is used in transmits the processing load that has increased the weight of transmitting terminal in the broadcast channel along with increasing sharply of class of business.In addition, use self-defining privately owned encapsulation format to be unfavorable for making full use of the systems soft ware resource of a large amount of maturations in the portable terminal, as IP (Internet Protocol, Internet protocol) protocol stack, and based on the various application programs of systems soft ware resource, as WEB (World Wide Web, World Wide Web (WWW)) browser, media player etc.
Summary of the invention
Technical problem to be solved by this invention is, overcomes the deficiencies in the prior art, proposes a kind of IP-based mobile multi-media broadcasting data encapsulation, sending and receiving method.
In order to address the above problem, the invention provides a kind of mobile multi-media broadcasting data method for packing, it is characterized in that this method comprises following steps:
A: multi-media broadcasting service or the pairing business datum of channel are divided into a plurality of business datum sections;
B: adopt the IP agreement that each business datum section is encapsulated as business datum IP bag; And adopt link layer protocol that each business datum IP bag is encapsulated as business datum link layer protocol bag;
C: the cladding of business datum link layer protocol is used on the time slot of service logical channels, with the time slot formation broadcast channel frame of control logic channel.
In addition, the business datum link layer protocol bag with same service groups is included in the same IP data block in regular turn; An IP data block takies a predefined integer service logical channels time slot, comprises an IP data block in each service logical channels time slot at the most.
In addition, also comprise the control logic channel reference information that encapsulates with link layer protocol in the described IP data block; Described control logic channel reference information is that the auxiliary reception end carries out the reference information that system control information receives at the control logic channel.
In addition, described control logic channel reference information is encapsulated in the IP data block with link layer protocol after with the IP protocol encapsulation again.
In addition, in the time slot of each service logical channels, fill the part that described IP data block does not take with padding data.
The present invention also provides a kind of mobile multi-media broadcasting data sending method, it is characterized in that, this method comprises following steps:
A: the mobile multi-media broadcasting service data of the one or more mobile multi-media broadcasting service/channels in the service groups are divided into a plurality of business datum sections;
B: adopt the IP agreement that each business datum section is packaged into business datum IP bag; And use link layer protocol that each business datum IP is sealed and dress up business datum link layer protocol bag;
C: above-mentioned business datum link layer protocol bag is included in the IP data block in regular turn, the time slot of this IP data block at predefined service logical channels sent.
In addition, before described step C, also comprise following steps:
A1: adopt the IP agreement that the control logic channel reference information is packaged into reference information IP bag; And adopt link layer protocol that reference information IP is sealed and dress up reference information link layer protocol bag;
B1: in described IP data block, comprise described reference information link layer protocol bag;
Described control logic channel reference information is that the auxiliary reception end carries out the reference information that system control information receives at the control logic channel.
In addition, in described step C, when the time slot of predefined service logical channels sends described IP data block, use padding data to fill the part that described IP data block does not take at this time slot.
The present invention also provides a kind of mobile multi-media broadcasting data method of reseptance, it is characterized in that, this method comprises following steps:
A) receiving terminal receives the IP data block at the time slot of the pairing service logical channels of service groups;
B) from the IP data block, obtain business datum link layer protocol bag, remove the link layer protocol head and tail of this business datum link layer protocol bag, obtain the business datum IP bag of wherein encapsulation;
C) the business datum IP bag that receives is submitted to the corresponding service processing program by the IP stack of this locality.
In addition, after described step a), also comprise following steps:
B1) from described IP data block, obtain the control logic channel reference information that adopts IP agreement and link layer protocol encapsulation;
B2) according to the control logic channel reference information control logic channel is received.
As from the foregoing, the present invention is by being packaged into business datum the IP bag, and further adopt link layer protocol to encapsulate the IP bag, the business datum IP bag that makes receiving terminal correctly to receive to transmit on the service logical channels, and can directly the business datum IP bag that receives be submitted to corresponding IP-based handling procedure, improve professional promotion rate, reduced business development and use cost.
Description of drawings
Fig. 1 is the broadcast channel frame structural representation that adopts mobile multi-media broadcasting data method for packing of the present invention to generate;
Fig. 2 is an embodiment of the invention mobile multi-media broadcasting data sending method flow chart;
Fig. 3 is an embodiment of the invention mobile multi-media broadcasting data method of reseptance flow chart.
Embodiment
No matter in cable network still is wireless network, IP is current and the most general network layer host-host protocol in the quite a long time from now on.Therefore the present invention sends to portable terminal with the packing forms that IP wraps by the Mobile Broadcast Services channel with business datum, and portable terminal is submitted to application layer by the IP stack of this locality with the IP bag that receives and handled.In addition, discern the IP bag for the ease of receiving terminal on physical channel, the present invention also carries out the link layer protocol encapsulation to the IP bag, generates the link layer protocol bag.
Describe the present invention below in conjunction with drawings and Examples.
Fig. 1 is the broadcast channel frame structural representation that adopts mobile multi-media broadcasting data method for packing of the present invention to generate.As shown in Figure 1, broadcast channel frame is made up of control logic channel and service logical channels; Wherein, the 0 transfer system control information of control logic channel occupancy time slot, system control information is made up of a plurality of control information tables; Service logical channels takies time slot 1 and transmits the mobile multi-media broadcasting service data to time slot 39.
One or more mobile multi-media broadcasting service/channels are divided into a service groups, and a service groups takies one or more time slots of service logical channels.
One or more mobile multi-media broadcasting service/channel takies (correspondence) 1 IP data block.Each IP data block takies an integer time slot; Each time slot comprises 1 IP data block at the most.
The shared time slot of service groups is the minimum time unit that the user receives service logical channels.
Comprise one or more IP packets (being called for short the IP bag) in the IP data block, after multimedia broadcast business data is cut apart, be packaged into a plurality of IP bags with the IP protocol format and send.
Each IP bag is carried out the link layer protocol encapsulation, generate the link layer protocol bag;
The purpose of carrying out the link layer protocol encapsulation is to make receiving terminal can discern the original position and the final position of an IP bag exactly.
Link layer protocol can adopt PPP (Point-to-Point Protocol, point-to-point protocol), and the size of each IP bag need satisfy MTU (Maximum Trasmission Unit, the MTU) requirement of PPP.
The expense of link layer protocol comprises link layer protocol head and link layer protocol tail two parts.
In addition, in service logical channels, except transmission comprises the link layer protocol bag (wherein encapsulating the IP bag) of business datum, also transmit the link layer protocol bag that comprises the control logic channel reference information, and padding data.
Above-mentioned control logic channel reference information is that the auxiliary reception end carries out the reference information that system control information receives at the control logic channel.
The system control information that transmits in the control logic channel is made of a plurality of control information tables usually, and the control information table repeats to send in the control logic channel.
Whether above-mentioned control logic channel reference information can be a control information table lastest imformation, be used to identify the control information table and upgrade.Receiving terminal knows according to the control information table lastest imformation that transmits in the service logical channels whether the control information table upgrades; When the control information table took place to upgrade, receiving terminal received the control information table that transmits in the control logic channel; Otherwise receiving terminal does not receive the control information table in the control logic channel, to reduce the number of times of receiving terminal receiving control information, reduces the processing resource and the power consumption of receiving terminal.
Equally, for the ease of the original position and the end position of receiving terminal identification control logic channel reference information, the control logic channel reference information need be encapsulated in the link layer protocol bag and send.
In addition, the control logic channel reference information also can be packaged into IP bag (this IP bag further is encapsulated in the link layer protocol bag) transmission.With the control logic channel reference information be packaged into IP effect be that it is submitted in the receiving terminal based on the management/monitoring application program of IP stack, be convenient to receiving terminal and add up and monitor.
Padding data is generally complete 0 or complete 1 sequence, and its effect is the time slot that fills up service logical channels.
Fig. 2 is an embodiment of the invention mobile multi-media broadcasting data sending method flow chart.As shown in Figure 2, this method comprises following steps:
101: the mobile multi-media broadcasting service data of the one or more mobile multi-media broadcasting service/channels in the service groups are divided into a plurality of business datum sections;
The shared time slot of service groups is the minimum time unit that the user receives service logical channels.
102: adopt the IP agreement that each business datum section is packaged into business datum IP bag;
103: each business datum IP sealed dress up business datum link layer protocol bag;
In the present embodiment, adopt PPP encapsulation link layer protocol bag.
104: adopt the IP agreement that the control logic channel reference information is packaged into reference information IP bag;
If control logic channel reference information data volume is bigger, be packaged into reference information IP bag respectively after also can being divided into a plurality of reference information data segments.
105: reference information IP sealed dress up reference information link layer protocol bag;
106: the IP data block that above-mentioned business datum link layer protocol bag and reference information link layer protocol bag are formed and padding data is multiplexing sends on the time slot of predefined service logical channels; System control information (control information table) is sent on the time slot of control logic channel;
Predefined one or more time slots are used for transmitting an IP data block in the ordinary business practice logic channel, comprise the data of a service groups in each IP data block.
Fig. 3 is an embodiment of the invention mobile multi-media broadcasting data method of reseptance flow chart.As shown in Figure 3, this method comprises following steps:
201: receiving terminal receives business datum link layer protocol bag and reference information link layer protocol bag in the control logic channel receiving system control information of multimedia broadcasting at service logical channels, and abandoning padding data;
Usually, receiving terminal only needs promptly only to receive a pairing IP data block of service groups receiving business datum link layer protocol bag with a service groups time slot corresponding.
202: receiving terminal is removed the link layer protocol head and the link layer protocol tail of business datum link layer protocol bag and reference information link layer protocol bag, obtains business datum IP bag and reference information IP bag;
203: receiving terminal obtains the control logic channel reference information that comprises in the reference information IP bag, carries out the reception of the control logic channel of subsequent timeslot according to this information;
Receiving terminal also can be submitted to management/monitoring application program based on the IP agreement by local IP stack with reference information IP bag.
204: receiving terminal is directly submitted to corresponding business processing program based on the IP agreement with business datum IP bag by local IP stack, as WEB browser, media player etc.
Claims (10)
1, a kind of mobile multi-media broadcasting data method for packing is characterized in that, this method comprises following steps:
A: multi-media broadcasting service or the pairing business datum of channel are divided into a plurality of business datum sections;
B: adopt the IP agreement that each business datum section is encapsulated as business datum IP bag; And adopt link layer protocol that each business datum IP bag is encapsulated as business datum link layer protocol bag;
C: the cladding of business datum link layer protocol is used on the time slot of service logical channels, with the time slot formation broadcast channel frame of control logic channel.
2, mobile multi-media broadcasting data method for packing as claimed in claim 1 is characterized in that, the business datum link layer protocol bag of same service groups is included in the same IP data block in regular turn; An IP data block takies a predefined integer service logical channels time slot, comprises an IP data block in each service logical channels time slot at the most.
3, mobile multi-media broadcasting data method for packing as claimed in claim 2 is characterized in that, also comprises the control logic channel reference information with the link layer protocol encapsulation in the described IP data block; Described control logic channel reference information is that the auxiliary reception end carries out the reference information that system control information receives at the control logic channel.
4, mobile multi-media broadcasting data method for packing as claimed in claim 3 is characterized in that, described control logic channel reference information is encapsulated in the IP data block with link layer protocol after with the IP protocol encapsulation again.
5, mobile multi-media broadcasting data method for packing as claimed in claim 2 is characterized in that, fills the part that described IP data block does not take with padding data in the time slot of each service logical channels.
6, a kind of mobile multi-media broadcasting data sending method is characterized in that, this method comprises following steps:
A: the mobile multi-media broadcasting service data of the one or more mobile multi-media broadcasting service/channels in the service groups are divided into a plurality of business datum sections;
B: adopt the IP agreement that each business datum section is packaged into business datum IP bag; And use link layer protocol that each business datum IP is sealed and dress up business datum link layer protocol bag;
C: above-mentioned business datum link layer protocol bag is included in the IP data block in regular turn, the time slot of this IP data block at predefined service logical channels sent.
7, mobile multi-media broadcasting data sending method as claimed in claim 6 is characterized in that, also comprises following steps before described step C:
A1: adopt the IP agreement that the control logic channel reference information is packaged into reference information IP bag; And adopt link layer protocol that reference information IP is sealed and dress up reference information link layer protocol bag;
B1: in described IP data block, comprise described reference information link layer protocol bag;
Described control logic channel reference information is that the auxiliary reception end carries out the reference information that system control information receives at the control logic channel.
8, mobile multi-media broadcasting data sending method as claimed in claim 6, it is characterized in that, in described step C, when the time slot of predefined service logical channels sends described IP data block, use padding data to fill the part that described IP data block does not take at this time slot.
9, a kind of mobile multi-media broadcasting data method of reseptance is characterized in that, this method comprises following steps:
A) receiving terminal receives the IP data block at the time slot of the pairing service logical channels of service groups;
B) from the IP data block, obtain business datum link layer protocol bag, remove the link layer protocol head and tail of this business datum link layer protocol bag, obtain the business datum IP bag of wherein encapsulation;
C) the business datum IP bag that receives is submitted to the corresponding service processing program by the IP stack of this locality.
10, mobile multi-media broadcasting data method of reseptance as claimed in claim 9 is characterized in that, also comprises following steps after described step a):
B1) from described IP data block, obtain the control logic channel reference information that adopts IP agreement and link layer protocol encapsulation;
B2) according to the control logic channel reference information control logic channel is received.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101873556A CN101442521A (en) | 2007-11-20 | 2007-11-20 | Method for encapsulating, sending and receiving mobile multimedia broadcast data |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNA2007101873556A CN101442521A (en) | 2007-11-20 | 2007-11-20 | Method for encapsulating, sending and receiving mobile multimedia broadcast data |
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| CN101442521A true CN101442521A (en) | 2009-05-27 |
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| CNA2007101873556A Pending CN101442521A (en) | 2007-11-20 | 2007-11-20 | Method for encapsulating, sending and receiving mobile multimedia broadcast data |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105325006A (en) * | 2013-06-12 | 2016-02-10 | Lg电子株式会社 | Apparatus for transmitting broadcast signals, apparatus for receiving broadcast signals, method for transmitting broadcast signals and method for receiving broadcast signals |
| WO2016144118A1 (en) * | 2015-03-11 | 2016-09-15 | 엘지전자(주) | Apparatus and method for transmitting and receiving broadcast signal |
| CN115396687A (en) * | 2022-08-25 | 2022-11-25 | 广州方硅信息技术有限公司 | Method, device, live broadcast system and equipment for processing service data in media resource |
-
2007
- 2007-11-20 CN CNA2007101873556A patent/CN101442521A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105325006A (en) * | 2013-06-12 | 2016-02-10 | Lg电子株式会社 | Apparatus for transmitting broadcast signals, apparatus for receiving broadcast signals, method for transmitting broadcast signals and method for receiving broadcast signals |
| CN105325006B (en) * | 2013-06-12 | 2019-06-18 | Lg电子株式会社 | Send the device of broadcast singal, the device of method and reception broadcast singal, method |
| US10448105B2 (en) | 2013-06-12 | 2019-10-15 | Lg Electronics Inc. | Apparatus for transmitting broadcast signals, apparatus for receiving broadcast signals, method for transmitting broadcast signals and method for receiving broadcast signals |
| US10904620B2 (en) | 2013-06-12 | 2021-01-26 | Lg Electronics, Inc. | Apparatus for transmitting broadcast signals, apparatus for receiving broadcast signals, method for transmitting broadcast signals and method for receiving broadcast signals |
| WO2016144118A1 (en) * | 2015-03-11 | 2016-09-15 | 엘지전자(주) | Apparatus and method for transmitting and receiving broadcast signal |
| US10728590B2 (en) | 2015-03-11 | 2020-07-28 | Lg Electronics Inc. | Apparatus and method for transmitting and receiving broadcast signal |
| US10856021B2 (en) | 2015-03-11 | 2020-12-01 | Lg Electronics Inc. | Broadcast signal transmission apparatus, broadcast signal reception apparatus, broadcast signal transmission method, and broadcast signal reception method |
| US11297360B2 (en) | 2015-03-11 | 2022-04-05 | Lg Electronics Inc. | Apparatus and method for transmitting and receiving broadcast signal |
| CN115396687A (en) * | 2022-08-25 | 2022-11-25 | 广州方硅信息技术有限公司 | Method, device, live broadcast system and equipment for processing service data in media resource |
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Application publication date: 20090527 |