CN101001407A - Data transmission method in cell broadcaste service - Google Patents
Data transmission method in cell broadcaste service Download PDFInfo
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- CN101001407A CN101001407A CNA2006100612836A CN200610061283A CN101001407A CN 101001407 A CN101001407 A CN 101001407A CN A2006100612836 A CNA2006100612836 A CN A2006100612836A CN 200610061283 A CN200610061283 A CN 200610061283A CN 101001407 A CN101001407 A CN 101001407A
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- cbs message
- cut apart
- message
- cbs
- sign
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Abstract
This invention discloses a data transmission method in local area broadcast services including: a transmitting side loads the segment ID of CBS message in the CBS messages and transmits it when transmitting the CBS message and a receiving side decodes the received data according to the ID of the CBS message, in which, even though any message code stream is not complete or decoding is mistaken in a receiving data packet, the message code stream can be put off from the received data then to decode the rest received data.
Description
Technical field
The present invention relates to wireless communication field, relate in particular to the transfer of data among the cell broadcaste service CBS in the wireless communication field.
Background technology
(Cell Broadcast Services: cell broadcaste service) function is to be similar to the multicast service of a kind of point of the text broadcast character in the TV to multiple spot to CBS, and it provides the function that the broadcast of some is broadcasted a definite geographic area in the mode of non-affirmation.As shown in Figure 1, be UMTS (the Universal Mobile Telecommunication System: universal mobile telecommunications system) schematic network structure of CBS business, in the UMTS system, (Cell Broadcast Center: Cell Broadcast CB control centre) (Core Network: part core net) is by all RNC (Radio Network Controller: radio network controller) connect at Iu-BC user's face among the UTRAN (universal land radio access web) therewith as CN for CBC, be responsible for finishing the management of CBS message, for the UMTS system, Iu-BC Interface should be the interface of an opening, and the CBC among the CN passes to RNC with business datum by Iu-BC Interface.The protocol stack structure of reference R99 CBS business as shown in Figure 2, according to Iu interface general technical specification protocol 25.410, ICP/IP protocol is adopted in the carrying of Iu-BC user's face transport layer; The CBS message of transmitting between CN and the RNC is the code stream that adopts ASN.1 (Abstract Syntax Notaton One: abstract syntax is represented) syntax rule to encode, connecting the Data transmission bag by TCP/IP gives wireless network layer SABP (ServiceArea Broadcast Protocol: the service area Radio Broadcasting Agreements) entity, wireless network layer SABP entity receives behind the message bag with data decode to be to carry out respective handling according to type of message after the CBS message from TCP/IP.
Because ICP/IP protocol sends and receives the characteristic of message, to issue transport layer TCP/IP behind several the CBS message codings respectively as core net CBC side SABP, and TCP/IP may will send to the RNC side after a plurality of such message code stream packings, to comprise a plurality of CBS message code streams in the packet that RNC side tcp/ip layer receives like this, and these code streams are passed to RNC side SABP, decode successively by SABP and handle.How to encapsulate code stream owing to also undeclared in SABP agreement 25.419 and CBS agreement 23.041 at the SABP layer by stipulated form, and make the recipient from packet, separate each code stream in this way, so the data packet format that the mode recipient SABP that gives tacit consent to according to agreement receives as shown in Figure 3, because the sign that finishes without any the identification message code stream between each message code stream, therefore SABP can only be according to the whole packet of ASN.1 rule elder generation's decoding after receiving packet, return article one message code stream length when decoding is finished, SABP decodes up to finishing whole packet after according to the length of returning article one code stream being removed from packet again then.Like this, if certain message code stream exists imperfect or decoding error in the packet, other message code streams can only be dropped in the whole message bag.
Summary of the invention
In view of this, the present invention proposes the data transmission method in a kind of cell broadcaste service, to solve existing problem in the prior art.
Data transmission method in a kind of cell broadcaste service, specific as follows:
Transmit leg is cut apart sign with CBS message and is carried in the described CBS message and sends when sending CBS message;
The recipient is cut apart sign according to described CBS message and is decoded to receiving data.
Preferable, described CBS message is cut apart the length of its pairing CBS message of sign indication; Then
The recipient is cut apart sign according to described CBS message and can be obtained this CBS message and cut apart the length that identifies pairing CBS message code stream and it is decoded.
Preferable, described CBS message is cut apart the original position of its pairing CBS message of sign indication; Then
The recipient is cut apart sign according to described CBS message and can be obtained this CBS message and cut apart the original position that identifies pairing CBS message code stream and the data behind this position are decoded.
Preferable, described CBS message is cut apart the end position of its pairing CBS message of sign indication; Then
The recipient is cut apart sign according to described CBS message and can be obtained this CBS message and cut apart the end position that identifies pairing CBS message code stream and the data before this position are decoded.
Preferable, described recipient is cut apart to be identified at according to described CBS message and is decoded and be specially receiving data:
If certain CBS message is cut apart the imperfect or decoding error of the pairing message code stream of sign in the reception data, then
Described CBS message is cut apart sign and pairing message code stream thereof throws away from receive data and residue is received data decode.
Preferable, described transmit leg is CBC, described recipient is RNC; Or described recipient is CBC, and described transmit leg is RNC.
Beneficial effect of the present invention is as follows:
By the data transmission method in this cell broadcaste service proposed by the invention, even the imperfect or decoding error of certain message code stream in the whole reception data, can only this message code stream be thrown away from whole reception data, then residue is received data and decode, and need not throw away whole reception data; Simultaneously, by the technical program, can also improve the opening of Iu-BC Interface.
Description of drawings
Fig. 1 is the schematic network structure of CBS business;
Fig. 2 is the protocol stack structure schematic diagram of CBS business;
The data packet format schematic diagram that Fig. 3 receives for recipient SABP application entity in the prior art;
Fig. 4 is the flow chart of technical solution of the present invention;
The data packet format schematic diagram that Fig. 5 receives for recipient SABP application entity among the present invention;
Data packet format one schematic diagram that Fig. 6 receives for recipient SABP application entity in the embodiment of the invention.
Embodiment
Core concept of the present invention is: transmit leg SABP is cut apart sign with CBS message and is carried on together transmission in the described CBS message when sending CBS message, recipient SABP is cut apart sign according to CBS message packet is decoded after receiving packet, then described CBS message is cut apart sign and pairing message code stream thereof and thrown away from receive data and remaining reception data are decoded if certain CBS message is cut apart the imperfect or decoding failure of the pairing message code stream of sign.
For make purpose of the present invention, technical scheme, and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is described in more detail.
As shown in Figure 4, the flow chart for the embodiment of the invention may further comprise the steps:
S10, CBS message is cut apart sign be carried in the described CBS message and send.
The protocol stack structure of CBS business as shown in Figure 2, when transmit leg sends data at needs to the recipient, at first data encapsulation to be sent is become CBS message in transmit leg SABP application entity, CBS message being cut apart sign in SABP application layer encapsulation of data also is encapsulated in the CBS message and goes, like this, every CBS message just has its corresponding CBS message to cut apart sign.
Transmit leg SABP application entity can be issued transport layer TCP/IP with it after packaged CBS message, and TCP/IP may will send to the recipient after a plurality of such message code stream packings, to comprise a plurality of CBS message code streams in the received data of recipient's side tcp/ip layer like this, its data format as shown in Figure 5.Recipient's side tcp/ip layer is passed to recipient's side SABP application entity with the data that received, and is decoded successively by the SABP application entity and handles.
S20, recipient are cut apart sign according to CBS message and are come to decode to receiving data.
Recipient SABP application entity after receiving data can according to CBS message cut apart the sign decode.CBS message is cut apart sign can various ways, cuts apart the form difference of sign according to CBS message, and different decoding processes is arranged.
Concretely, CBS message is cut apart the length that sign can be its pairing CBS message of indication, recipient SABP application entity is cut apart identification field knowing data length indication by checking first CBS message so, and SABP just can know CBS message next cut apart and identifies indicated data length and decode as a complete message code stream.Specifically as shown in Figure 6, earlier by checking the Length Indication Msg1 length of Msg1, according to this Length Indication the message code stream of Msg1 is decoded again, check the Length Indication Msg2length of Msg2 successively again, according to this length the message code stream of Msg2 is decoded again, and the like, whole reception data are decoded.In this process, if imperfect or certain the message code stream decoding failure of certain message code stream occurs, then directly abandon this message code stream, check next Length Indication and decode, so just can not abandon whole packet because of the original position of not knowing message code stream, do the opening that also can improve Iu-BC Interface like this, the compatibility when system docking is provided.
CBS message is cut apart the original position that sign also can be its pairing CBS message of indication, so, recipient SABP application entity is cut apart identification field and is cut apart the original position of the pairing CBS message of sign in the data that received to know this CBS message by checking first CBS message, then, the SABP application entity just begins to come the whole packet that begins from original position is decoded from indicated original position, and the back of decode successfully obtains described first CBS message and cuts apart sign and its next CBS message and cut apart the data between the sign and it is taken out from receive data and then decode to remaining the reception data; If decoding failure then finds next CBS message to cut apart sign and the data before this are all lost, cut apart sign according to described next CBS message and again residue is received data and decode.
CBS message is cut apart the end position that sign also can be its pairing CBS message of indication, so, recipient SABP application entity is cut apart identification field and is cut apart the end position of the pairing CBS message of sign in the data that received to know this CBS message by checking first CBS message, then, the SABP application entity is just decoded to all data before indicated end position in the described reception data, successfully then obtain described first CBS message if decode and cut apart all data before the position that sign identifies and it is taken out from receive data, receive data from residue then and find next CBS message to cut apart to identify and its data are before decoded; If decoding failure is then directly cut apart this CBS message sign and all data before thereof and all thrown away, find next CBS message to cut apart sign and the data before it are decoded then.
Like this, by described technical scheme, failure then no longer is that whole reception data are abandoned if certain is decoded in decode procedure, and only be CBS message in this time decode procedure to be cut apart the data that sign identifies abandon, can decode once more and correctly receive remaining data receiving the remaining part of data; Simultaneously, carry out the transfer of data of cell broadcaste service according to technical solutions according to the invention, when sending CBS message being cut apart sign is carried in the CBS message, the recipient is cut apart sign according to described CBS message and is decoded to receiving data, can improve the opening of Iu-BC Interface like this.
Above-described specific embodiment; purpose of the present invention, technical scheme and beneficial effect have been carried out further detailed description; institute is understood that; the above only is specific embodiments of the invention; not in order to restriction the present invention; within the spirit and principles in the present invention all, any modification of being made, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1, the data transmission method in a kind of cell broadcaste service is characterized in that,
Transmit leg is cut apart sign with CBS message and is carried in the described CBS message and sends when sending CBS message;
The recipient is cut apart sign according to described CBS message and is decoded to receiving data.
2, the method for claim 1 is characterized in that, described CBS message is cut apart the length of its pairing CBS message of sign indication; Then
The recipient is cut apart sign according to described CBS message and can be obtained this CBS message and cut apart the length that identifies pairing CBS message code stream and it is decoded.
3, the method for claim 1 is characterized in that, described CBS message is cut apart the original position of its pairing CBS message of sign indication; Then
The recipient is cut apart sign according to described CBS message and can be obtained this CBS message and cut apart the original position that identifies pairing CBS message code stream and the data behind this position are decoded.
4, the method for claim 1 is characterized in that, described CBS message is cut apart the end position of its pairing CBS message of sign indication; Then
The recipient is cut apart sign according to described CBS message and can be obtained this CBS message and cut apart the end position that identifies pairing CBS message code stream and the data before this position are decoded.
As claim 2,3 or 4 described methods, it is characterized in that 5, described recipient is cut apart to be identified at according to described CBS message and decoded and be specially receiving data:
If certain CBS message is cut apart the imperfect or decoding error of the pairing message code stream of sign in the reception data, then
Described CBS message is cut apart sign and pairing message code stream thereof throws away from receive data and residue is received data decode.
As each described method in the claim 1 to 4, it is characterized in that 6, described transmit leg is CBC, described recipient is RNC; Or
Described recipient is CBC, and described transmit leg is RNC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100612836A CN101001407A (en) | 2006-06-22 | 2006-06-22 | Data transmission method in cell broadcaste service |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100612836A CN101001407A (en) | 2006-06-22 | 2006-06-22 | Data transmission method in cell broadcaste service |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101001407A true CN101001407A (en) | 2007-07-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006100612836A Pending CN101001407A (en) | 2006-06-22 | 2006-06-22 | Data transmission method in cell broadcaste service |
Country Status (1)
| Country | Link |
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| CN (1) | CN101001407A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009155834A1 (en) * | 2008-06-23 | 2009-12-30 | 华为技术有限公司 | System, apparatus and method for broadcast transmission of etws message |
| CN103929277A (en) * | 2014-05-08 | 2014-07-16 | 北京华力创通科技股份有限公司 | Message transmission method based on CBCH |
-
2006
- 2006-06-22 CN CNA2006100612836A patent/CN101001407A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009155834A1 (en) * | 2008-06-23 | 2009-12-30 | 华为技术有限公司 | System, apparatus and method for broadcast transmission of etws message |
| CN101557264B (en) * | 2008-06-23 | 2011-05-04 | 华为技术有限公司 | Broadcast transmission system, device and method of ETWS message |
| US8472355B2 (en) | 2008-06-23 | 2013-06-25 | Huawei Technologies Co., Ltd. | System, apparatus and methods for broadcasting and transmitting ETWS message |
| CN103929277A (en) * | 2014-05-08 | 2014-07-16 | 北京华力创通科技股份有限公司 | Message transmission method based on CBCH |
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