CN101272269A - Event informing method and system - Google Patents

Abstract

The invention discloses a method for event notification and a system thereof; wherein, after a notify party generated relevant notification message according to the current event, the notified party is notified through a PSI/SI table that carries the notification message; therefore the detailed content of the notification message can be directly received by the notified party based on the information carried by the PSI/SI table.

Description

The method and system of event notice

Technical field

The present invention relates to the communications field, relate in particular to event notification technique.

Background technology

Along with the fast development of internet (Internet), a large amount of multimedia services have obtained using widely, as mobile video, television broadcasting, video conference, online education, interactive game etc.

The wireless communication system of supporting described multimedia service to use is a lot of at present, comprise wireless communication system based on the terrestrial broadcasting technology, DVB (Digital Video Broadcasting as Europe, digital video broadcasting) system, DVB-H (the Digital VideoBroadcasting-Handheld that gets up based on described DVB system development, digital video hand-held broadcasting) T-DMB of system, Korea S (Terrestrial-Digital Multimedia Broadcasting, terrestrial digital multimedia broadcasting) system; Based on the wireless communication system of satellite transmission technology, as SDMB (Satellite Digital MultimediaBroadcasting, the digital multimedia broadcast (dmb) via satellite) system in Europe; 3GPP (3rd GenerationPartnership Project based on the mobile network, third generation partner program) (the MultimediaBroadcast/Multicast Service of the MBMS in, multimedia broadcasting and multicast service) wireless communication system of technology, BCMCS (BroadcastMulticast Service, BroadCast MultiCast Service) technology and stream media technology.

The framework of described wireless communication system comprises SERVICE MANAGEMENT (service management entity), NETWORKS (network entity) and at least one TERMINAL (terminal) as shown in Figure 1.

Described service management entity is used for providing corresponding business according to the demand of operator; And the descriptor of described business added in the describing word in SDT as shown in table 1 (the Service Description Table) table, and the information that network is relevant is added among the NIT (Network Information Table, network information table); Be service_description_sections with the cutting of described SDT table then, described service_description_sections, NIT table and described business are encapsulated in the TS bag together, described TS bag is sent to terminal by described network entity.

The structure of described SDT table is as shown in table 1:

Grammer	Figure place	Implication
			service_description_section(){
table_id	8	The table sign
			section_syntax_indicator	1
reserved_future_use	l
			reserved	2
section_length	12
			transport_stream_id	16	Transport stream identification
reserved	2
			version_number	5	Version information
current_next_indicator	1
			section_number	8
last_section_number	8
			original_network_id	16	Network identity
reserved_future_use	8
			for(i=0；i＜N：i++){
service_id	16	Service identification
			reserved_future_use	6
EIT_schedule_flag	1
			EIT_present_following_flag	1
running_status	3
			free_CA_mode	1
descriptors_loop_length	12
			for(j＝0；j＜N；j++){
descriptor()		Describing word
			}
}
			CRC_32	32
}

Table 1

In addition, in some cases, described service management entity also needs to send some and some notices of concrete independent of service, for example paroxysmal notification message such as the system failure, sudden disaster incident to terminal.This class notification message needs all terminals to receive, and is commonly referred to as the default notification business, and it comprises following three types business:

PDN (platform dependence notification, platform related notification message) business, i.e. service provider's related announcement business, the scope of messaging service are limited in service provider's scope, only send to the terminal in service provider's scope.

EDN (ESG dependence notification, ESG provider notification message) business, i.e. ESG (Electronic service guide, electric program menu) provider's related announcement business, have only the terminal of this ESG provider service, just can receive this business.

NDN (Network dependence notification, network related notification message) business, i.e. network related announcement business has only the terminal of current broadcast network just can receive this message.

For the DVB-H system, professional transmission is based on that the time slicing transmission technology carries out, the principle of described time slicing transmission technology is: after network entity passes through MPE (multi-protocols encapsulation) and TS encapsulation with one group of IP data of same business, to be placed among the same Time Sliced Burst through the TS bag that the encapsulation back forms, send; For each terminal,, then only this professional TimeSliced Burst time period, receiving broadcasting information need belonged to if subscribed to certain business.

The method that the prior art relevant with the present invention provides a kind of DVB system that notification message is handled, it comprises:

The service management entity provides the information of the PID (Package ID, bag sign) that searches the notification message place by announcement_support_descriptor (notice support is described); And described announcement_support_descriptor is put among the descriptor () of SDT table, with described notification message, be encapsulated into the TS bag of described PID correspondence, by network entity described TS bag and SDT table are sent to terminal then.

The form of wherein said announcement_support_descriptor (notice support is described) is as shown in table 2:

Type	Length	Implication
			Announcement_support_descriptor ()
Descriptor_tag	8bit	The describing word sign
			Descriptor_length	8bit	This describing word length
Announcement_support_indicator	16bit	This is individual 16 a mark, and which notification type indication all supports in informing business.

Announcement_type		Which kind of notification type indication supports in the current address.
			Reserved_future_use
Reference_type		The transmission means of definition notice
			Original_network_id		The sign of notice place network
Transport_stream_id		The sign of notice place TS stream
			Service_id		The sign of notice place business finds the position at PID place of the TS of transmission notice service according to this sign
Component_tag	8bit	By it, in the position at the PID place of the TS of transmission notice service, find the PID of the TS of transmission notice service

Table 2

As can be seen, it is by the type of announcement_support_indicator and announcement_type Field Definition notification message, and can search the PID at described notification message place by original_network_id, transport_stream_id, service_id, the component_tag field of definition.

The handling process of terminal is as shown in Figure 2:

Terminal monitoring PSI/SI table (general names of SDT table, NIT table and announcement_support_descriptor etc.), after receiving the SDT table, by the announcement_support_descriptor in the described SDT table is analyzed, obtain original_network_id, transport_stream_id, servic_id, the component_tag of communication notification messages, so just can obtain the PID at described notification message place; Receive the TS bag of carrying notification message then according to described PID, and the message transmission of carrying in the described TS bag that will receive handles for relevant decoder.

By the technical scheme of prior art as can be seen, the DVB terminal need find notification message place PID from the SDT table that listens to, and could monitor the TS bag of carrying notification message then according to described PID, obtains the particular content of notification message again from described TS bag.

Summary of the invention

Embodiments of the invention provide a kind of method and system of event notice, and it can directly obtain the particular content of notification message according to the PSI/SI table that listens to.

Embodiments of the invention are achieved through the following technical solutions:

Embodiments of the invention provide a kind of method of event notice, and it comprises:

Notify party produces related notification message according to current event;

By the mode that the SDT table carries described notification message, notice notified party.

Embodiments of the invention also provide a kind of event notice processing method, and it comprises:

Receive the SDT table, the service_id according in the described SDT table finds corresponding notification message describing word notification_descriptor;

Handle current event according to the notification message that described notification message describing word notification_descriptor is entrained.

Embodiments of the invention also provide the method for another kind of event notice, and it comprises:

Notify party produces related notification message according to current event;

Attribute according to current event is determined advice method, if be defined as sending by SDT table, then the mode of carrying described notification message by the SDT table is sent event notice; Otherwise the mode of carrying described notification message by PDN message is sent event notice.

Embodiments of the invention also provide a kind of event notice system, and it comprises:

Message source is used for producing related notification message according to current event;

The PSI/SI generator is used for the mode of carrying described notification message by SDT table, sends event notice.

Embodiments of the invention also provide another kind of event notice system, and it comprises:

Network entity and service management entity;

Described network entity is used for producing related notification message according to current event; And determine advice method according to the attribute of described current event, when advice method is when sending by the SDT table, then the mode of carrying described notification message by the SDT table is sent event notice; When advice method sends for passing through PDN message, then described notification message is sent to described service management entity;

The mode that described service management entity carries described notification message by PDN message is sent event notice.

Embodiments of the invention also provide a kind of terminal, and it comprises:

The notice acquiring unit is used to receive the SDT table, and the service_id according in the described SDT table finds corresponding notification message describing word notification_descriptor;

The event handling unit is used for handling current event according to the entrained notification message of described notification message describing word notification_descriptor.

The specific embodiments that is provided by the embodiment of the invention described above as can be seen, after notify party produces related notification message according to current event, carry described notification message by the PSI/SI table, notice notified party, the particular content of the described notification message of information acquisition during described like this notified party can directly show according to described PSI/SI.

Description of drawings

The Organization Chart of the wireless communication system that Fig. 1 provides for background technology;

The reception handling process of the terminal that Fig. 2 provides for background technology;

Fig. 3 is the flow chart of the first embodiment of the present invention;

Fig. 4 is the flow chart of the second embodiment of the present invention;

Fig. 5 is the structure chart of the third embodiment of the present invention;

Fig. 6 is the structure chart of the fourth embodiment of the present invention;

Fig. 7 is the structure chart of the fifth embodiment of the present invention.

Embodiment

The first embodiment of the present invention provides a kind of method of event notice, is network entity with the notify party, and notified party is that terminal is an example, and its flow process comprises as shown in Figure 3:

Step S101, network entity produces notification message according to current event, and as the NDN notification message, wherein said notification message comprises message id, type of message, parameters such as message content.

Step S102 determines that according to the attribute of described current event advice method is to send by PSI/SI message, still sends by PDN message.

For example:, then select to send by PSI/SI message if current event is emergency; If message event is non-emergent incident, then send by PDN message.

When determining it is when sending by PSI/SI message, execution in step S103 then; Otherwise, when determining it is when sending by PDN message, execution in step S106 then.

Step S103 is encapsulated in the PSI/SI form with described notification message, in the SDT form, and upgrades the version information that described PSI/SI shows.

During step S103 specific implementation,,, be used for representing the particular content of described notification message as increasing a notification message describing word notification_descriptor in the SDT table at the PSI/SI form; With described notification message describing word notification_descriptor, be inserted in the describing word of each service_id (service identification) correspondence of circulation in the SDT table as shown in table 1 then.

Wherein, the definition of described notification message describing word notification_descriptor is as shown in table 3:

Type	Length	Implication
			notification_descriptor{
Descriptor_tag	8bit	Get 0x80, represent that this describing word carries NDN message
			Descriptor_length	8bit	This describing word length
For(i＝0；i＜N；i++)
			{
Text_char	8bit	The describing word content
			}
}

Table 3

In addition, when upgrading the version information of described PSI/SI table, can realize by the version_number field of revising the PSI/SI table.

Step S104 broadcasts the cycle according to the wheel of setting and ceaselessly broadcast described PSI/SI form by TS stream wheel on network entity, and wheel is broadcast the minimum duration that the cycle is each timeslice of network entity.

Network entity is the cycle with the minimum duration t of each timeslice, sends the PSI/SI table that carries notification message, all carries the PSI/SI table to guarantee each timeslice.

Step S105, behind the business reception TS stream of terminal according to its subscription, by analyzing the PSI/SI form, renewal has taken place in the version information of finding the PSI/SI table, then in the PSI/SI table, find the describing word of any one service_id correspondence wherein, and find the particular content of NDN notification message incident according to described describing word, and it is showed the user, finish.

Step S106 is sent to the service management entity with described NDN message event; Execution in step S107 then, described service management entity generates PDN message according to described NDN message event, and described PDN message is sent by network entity; Execution in step S108 after described terminal receives PDN message, obtains the content of NDN message informing incident by analyzing PDN message, and it is showed the user then, finishes.

Describe the specific implementation process of step S103 below for example in detail to step S105:

At a time, the service management entity has emergency notification messages, content is " network is about to interrupt ", the notification_descriptor notification message describing word by SDT table then, describe the content of " network is about to interrupt ", and the version_number field of expression version information is upgraded in will showing; Subsequently, described service management entity is the cycle with the minimum duration t of each timeslice, and the SDT table that carries notification message is sent at network entity.

The structure of the notification_descriptor notification message describing word of described SDT table is as shown in table 4:

Parameter name	Parameter value	Describe
			PID	0x0010	What the TS bag of PID=0x0010 transmitted is the SDT table
table id	0x42
			Notification_descriptor () { service_id=0x0001 " network is about to interrupt " }		Notification message is in the describing word circulation of service_id=0x0001 correspondence
Notification_descriptor () { service_id=0x0002 " network is about to interrupt " }		Notification message is in the describing word circulation of service_id=0x0002 correspondence

. . . . . .		. . . . . .
			Notification_descriptor () { service_id=0x00011 " network is about to interrupt " }		Notification message is in the describing word circulation of service_id=0x00011 correspondence

Table 4

After each terminal is received described SDT table, find that renewal has taken place the version information of SDT table, then select any one service_id wherein; And give the user with the content displaying of " network be about to interrupt " among the notification message describing word notification_descriptor under the service_id.

Pass through at original PSI/SI table at this embodiment, as the notification_descriptor notification message describing word that increases in the SDT table, insert the network notification message, realized carrying the function of network notification message, thereby kept compatibility original PSI/SI table by the PSI/SI table.

The second embodiment of the present invention provides the method for second kind of event notice, the difference of itself and first embodiment is, insert on the notification message basis in the describing word of this embodiment circulation service_id correspondence in first embodiment shows by SDT, in the NIT table, increase a describing word again, be used to describe the sign service_id of the business at notification message place, terminal just can be obtained the service_id of notification message correspondence in the describing word in the NIT table like this; Can search the notification message describing word of described service_id correspondence subsequently at the SDT table.With the notify party is network entity, and notified party is that terminal is an example, and the flow process of second embodiment comprises as shown in Figure 4:

Step S201, network entity inserts a notification message and finds describing word notification_access_descriptor in the NIT table, and this describing word has been carried the pairing service_id of notification message, as service_id=0x0016.By broadcasting TS bag described NIT table is sent to terminal then.The structure of notification_access_descriptor in the described NIT table is as shown in table 5:

Type

Length

Implication

Notification_access_descriptor{
			Descriptor_tag	8bit	Get 0x81, represent that this describing word carries the service_id of notification message correspondence.
Descriptor_ength	8bit	This describing word length
			Service_id	16bit	The service_id of notification message correspondence.
}

Table 5

Step S202, terminal is received the NIT table of broadcasting, and according to the describing word that described NIT shows, obtains the serivice_id of notification message correspondence.

Step S203, network entity produces notification message according to current event, and as the NDN notification message, wherein said notification message comprises message id, type of message, parameters such as message content.

Step S204 determines that according to the attribute of described current event advice method is to send by PSI/SI message, still sends by PDN message.

For example:, then select to send by PSI/SI message if current event is emergency; If current event is non-emergent incident, then send by PDN message.

When determining it is when sending by PSI/SI message, then execution in step S205 is to step S207; Otherwise when determining it is when sending by PDN message, execution in step S208 is to step S210.

Step S205 is encapsulated in described notification message in the notification message describing word of serivice_id correspondence described in the PSI/SI form (as the SDT form), and upgrades the version information of PSI/SI table.

During specific implementation,,, be used for representing the particular content of described notification message as increasing a notification message describing word notification_descriptor in the SDT table at the PSI/SI form; With described notification message describing word notification_descriptor, be inserted in the describing word that serivice_idservice_id (service identification) is corresponding described in the SDT table as shown in table 1 then.Wherein, the definition of described notification message describing word notification_descriptor is still as shown in table 3.

Step S206 broadcasts the cycle according to the wheel of setting and ceaselessly broadcast described PSI/SI form by TS stream wheel on network entity, and wheel is broadcast the minimum duration that the cycle is each timeslice of network entity.

Step S207, behind the business reception TS stream of terminal according to its subscription, by analyzing the PSI/SI form, renewal has taken place in the version information of finding the PSI/SI table, then, in described PSI/SI form, search the notification message describing word of described serivice_id correspondence, get access to the particular content of the notification message incident of describing in the described notification message describing word according to the serivice_id of the notification message correspondence that gets access among the step S202, and it is showed the user, finish.

Step S208 is sent to the service management entity with described NDN message event; Execution in step S209 then, described service management entity generates PDN message according to described NDN message event, and described PDN information broadcast is gone out; Execution in step S210 after described terminal receives PDN message, obtains the content of NDN message informing incident by analyzing PDN message, and it is showed the user then, finishes.

Illustrate among the 3rd embodiment step S201 below to the specific implementation process of step S207, as follows:

Network entity is set at 0x0012 with the service_id at notification message place, and then the NIT table is as shown in table 6:

Parameter name	Parameter value	Describe
			PID	0x0010	What the TS bag of PID=0x0010 transmitted is the NIT table
tableid	0x40
			notification_descriptor() { service_id＝0x0012 }		Notification message is in the describing word of service_id=0x0012 correspondence

Table 6

When the notification message of " network be about to interrupt ", in the describing word of network entity service_id=0x0012 correspondence in the SDT table, insert the notification message describing word, as shown in table 7:

Parameter name	Parameter value	Describe
			PID	0x0010	What the TS bag of PID=0x0010 transmitted is the SDT table
tableid	0x42
			notification_descriptor() { service_id＝0x0001 ...... }

notification_descriptor() { service_id＝0x0002 ...... }
			......		......
Notification_descriptor () { service_id=0x0012 " network is about to interrupt " }		Notification message is in the describing word of service_id=0x0012 correspondence
			......		......

Table 7

Terminal just can find the notification message describing word according to service_id=0x0012 like this, obtains the notification message content of " network is about to interrupt ".

In two describing word of this embodiment, realized carrying the function of network notification message, thereby kept compatibility original PSI/SI table by the PSI/SI table by in the PSI/SI table, increasing; Simultaneously, when sending a notification message, owing to only inserted the network notification message in the describing word position of service_id correspondence, so when sending data, the data redundancy amount is few, shared bandwidth resources are less.

The third embodiment of the present invention provides a kind of event notice system, and its structure comprises as shown in Figure 5: service management entity and network entity.

Wherein said service management entity comprises:

PDN Aggregator (the PDN event set is grown up to be a useful person) is responsible for integrated notification message, and produces PDN message according to described notification message;

PDN Distribution (PDN distributor) is responsible for the transmission of PDN message.

Described network entity comprises following components and parts:

Message source as NDN Source (NDN message source), is responsible for producing notification message according to current event;

PSI/SI Generator (PSI/SI generator) is responsible for receiving notice message, and described notification message is inserted in the PSI/SI table;

The advice method determining unit is used for determining advice method according to the attribute of described current event, when current event is emergency, then determines by SDT table notice, and triggers described message source the notification message that is produced is sent to described PSI/SI generator; Otherwise, determine by the PDN message informing, and described message source sends to described service management entity with the notification message that is produced.

Information transfering relation between above-mentioned each components and parts is as follows:

Message source in the described network entity produces related notification message according to current event;

Described advice method determining unit is determined advice method according to the attribute of described current event, when current event is emergency, then determines by SDT table notice, and triggers described message source the notification message that is produced is sent to described PSI/SI generator; Otherwise, determine by the PDN message informing, and trigger described message source the notification message that is produced is sent to described service management entity;

The notification message that described PSI/SI generator sends to described message source is carried in the SDT table, and sends described SDT table.Concrete processing can take two kinds of methods to carry out:

First kind: utilize notification message describing word notification_descriptor, carry described notification message; With described notification message describing word notification_descriptor, be inserted in the describing word of each service identification service_id correspondence of circulation in the SDT table; Described SDT table is sent; During specific implementation and the associated description among the method embodiment identical, be not described in detail here.

Second kind: utilize notification message describing word notification_descriptor, carry described notification message; With described notification message describing word notification_descriptor, be inserted in the describing word of a serivice_id correspondence in the SDT table; Described SDT table is sent.During specific implementation and the associated description among the method embodiment identical, be not described in detail here.

Described service management entity by the mode that PDN message is carried described notification message, sends event notice after receiving the notification message of the message source transmission in the described network entity, specifically handles as follows:

The PDN event set is grown up to be a useful person and the PDN distributor; The PDN event set is grown up to be a useful person, and is used for the notification message that described message source sends to is carried at PDN message, and described PDN message is sent to the PDN distributor; Described PDN distributor sends described PDN message.

The fourth embodiment of the present invention provides another kind of event notice system, and its structure comprises as shown in Figure 6: message source and PSI/SI generator.Information interaction relation therebetween is as follows:

Described message source produces related notification message according to current event;

Described PSI/SI generator sends event notice by the mode that the SDT table carries described notification message.Concrete processing can take two kinds of methods to carry out:

First kind: utilize notification message describing word notification_descriptor, carry described notification message; With described notification message describing word notification_descriptor, be inserted in the describing word of each service identification service_id correspondence of circulation in the SDT table; Described SDT table is sent; During specific implementation and the associated description among the method embodiment identical, be not described in detail here.

Second kind: utilize notification message describing word notification_descriptor, carry described notification message; With described notification message describing word notification_descriptor, be inserted in the describing word of a serivice_id correspondence in the SDT table; Described SDT table is sent.During specific implementation and the associated description among the method embodiment identical, be not described in detail here.

As can be seen, all notification messages that this embodiment produces for message source, all the mode of carrying described notification message by the SDT table is sent event notice.

The 5th embodiment provided by the invention is a kind of terminal, and its structure comprises as shown in Figure 7: notice acquiring unit and event handling unit.

Information interaction relation between each unit is as follows:

Described notice acquiring unit receives the SDT table, and the service_id according in the described SDT table finds corresponding notification message describing word notification_descriptor; During concrete the processing, can adopt two kinds of methods to handle:

First kind: receive the SDT table, get access to one of them service_id by described SDT table; Find corresponding notification message describing word notification_descriptor according to accessed service_id.

Second kind: receive network information table NIT, from described NIT table, get access to the serivice_id of notification message describing word notification_descriptor correspondence;

After receiving described SDT table, find described notification message describing word notification_descriptor according to the serivice_id that obtains from the NIT table, and handle current event according to the entrained notification message of described notification message describing word notification_descriptor.

The wheel of the PSI/SI table in the foregoing description is broadcast the cycle also can be less than the minimum duration of each timeslice of network entity.

The specific embodiments that is provided by the invention described above embodiment as can be seen, after notify party produces related notification message according to current event, carry described notification message by the PSI/SI table, notice notified party, the particular content of the described notification message of information acquisition during described like this notified party can directly show according to described PSI/SI.

Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.

Claims (19)

1. the method for an event notice is characterized in that, comprising:

Notify party produces related notification message according to current event;

By the mode that the SDT table carries described notification message, notice notified party.

2. the method for claim 1 is characterized in that, the mode that described notify party carries described notification message by SDT table is notified the process of terminal, specifically comprises:

Notify party utilizes notification message describing word notification_descriptor, carries described notification message; With described notification message describing word notification_descriptor, be inserted in the describing word of each service identification service_id correspondence of circulation in the SDT table; Described SDT table is sent to notified party;

Perhaps,

Notify party utilizes notification message describing word notification_descriptor, carries described notification message; With described notification message describing word notification_descriptor, be inserted in the describing word of a serivice_id correspondence in the SDT table; Described SDT table is sent to notified party.

3. method as claimed in claim 2 is characterized in that, is the cycle according to the minimum duration smaller or equal to each timeslice of network, broadcasts described SDT and shows to notified party.

4. method as claimed in claim 2 is characterized in that, also comprises:

The serivice_id that notify party will insert the describing word correspondence of described notification message describing word is carried among the network information table NIT and sends, and notice notified party obtains described serivice_id at described NIT table.

5. an event notice processing method is characterized in that, comprising:

Receive the SDT table, the service_id according in the described SDT table finds corresponding notification message describing word notification_descriptor;

Handle current event according to the notification message that described notification message describing word notification_descriptor is entrained.

6. method as claimed in claim 5 is characterized in that, receives the SDT table, according to the service_id in the described SDT table, finds the process of corresponding notification message describing word notification_descriptor, specifically comprises:

After receiving the SDT table, obtain wherein any one service_id by the described SDT table that receives; Find corresponding notification message describing word notification_descriptor according to accessed service_id;

Perhaps,

Receive network information table NIT, from described NIT table, get access to the serivice_id of notification message describing word notification_descriptor correspondence; Receive the SDT table, according to the serivice_id that obtains by the NIT table, in the SDT table that receives, find described notification message describing word notification_descriptor, and handle current event according to the entrained notification message of described notification message describing word notification_descriptor.

7. the method for an event notice is characterized in that, comprising:

Notify party produces related notification message according to current event;

Attribute according to current event is determined advice method, if be defined as sending by SDT table, then the mode of carrying described notification message by the SDT table is sent event notice; Otherwise the mode of carrying described notification message by PDN message is sent event notice.

8. method as claimed in claim 7 is characterized in that, described mode of carrying described notification message by SDT table is sent the process of event notice, specifically comprises:

Notify party utilizes notification message describing word notification_descriptor, carries described notification message; With described notification message describing word notification_descriptor, be inserted in the describing word of each service identification service_id correspondence of circulation in the SDT table; Described PSI/SI table is sent to notified party; Perhaps,

Notify party utilizes notification message describing word notification_descriptor, carries described notification message; With described notification message describing word notification_descriptor, be inserted in the describing word of a serivice_id correspondence in the SDT table; Described PSI/SI table is sent to notified party.

9. method as claimed in claim 8 is characterized in that, also comprises:

The setivice_id that notify party will insert the describing word correspondence of described notification message is carried among the network information table NIT and sends, and notice notified party obtains described serivice_id at described NIT table.

10. an event notice system is characterized in that, comprising:

Message source is used for producing related notification message according to current event;

The PSI/SI generator is used for the mode of carrying described notification message by SDT table, sends event notice.

11. system as claimed in claim 10 is characterized in that, described PSI/SI generator specifically is used for:

Utilize notification message describing word notification_descriptor, carry described notification message; With described notification message describing word notification_descriptor, be inserted in the describing word of each service identification service_id correspondence of circulation in the SDT table; Described SDT table is sent; Perhaps,

Utilize notification message describing word notification_descriptor, carry described notification message; With described notification message describing word notification_descriptor, be inserted in the describing word of a serivice_id correspondence in the SDT table; Described SDT table is sent.

12. system as claimed in claim 11 is characterized in that, described PSI/SI generator also is used for:

The serivice_id that inserts the describing word correspondence of described notification message is carried among the network information table NIT sends, and notice notified party obtains described serivice_id in described NIT table.

13. an event notice system is characterized in that, comprising:

Network entity and service management entity;

Described network entity is used for producing related notification message according to current event; And determine advice method according to the attribute of described current event, when advice method is when sending by the SDT table, then the mode of carrying described notification message by the SDT table is sent event notice; When advice method sends for passing through PDN message, then described notification message is sent to described service management entity;

The mode that described service management entity carries described notification message by PDN message is sent event notice.

14. system as claimed in claim 13 is characterized in that, described network entity comprises:

Message source, advice method determining unit and PSI/SI generator;

Described message source is used for producing related notification message according to current event;

Described advice method determining unit, be used for determining advice method according to the attribute of described current event, when current event is emergency, then determines by SDT table notice, and trigger described message source the notification message that is produced is sent to described PSI/SI generator; Otherwise, determine by the PDN message informing, and trigger described message source the notification message that is produced is sent to described service management entity;

The notification message that described PSI/SI generator sends to described message source is carried in the SDT table, and sends described SDT table.

15. system as claimed in claim 14 is characterized in that, described PSI/SI generator specifically is used for:

Utilize notification message describing word notification_descriptor, carry described notification message; With described notification message describing word notification_descriptor, be inserted in the describing word of each service identification service_id correspondence of circulation in the SDT table; Described SDT table is sent;

Perhaps,

Utilize notification message describing word notification_descriptor, carry described notification message; With described notification message describing word notification_descriptor, be inserted in the describing word of a serivice_id correspondence in the SDT table; Described SDT table is sent.

16. system as claimed in claim 14 is characterized in that, described service management entity comprises:

The PDN event set is grown up to be a useful person and the PDN distributor;

The PDN event set is grown up to be a useful person, and is used for the notification message that described message source sends to is carried at PDN message, and described PDN message is sent to the PDN distributor;

Described PDN distributor sends described PDN message.

17. a terminal is characterized in that, comprising:

The notice acquiring unit is used to receive the SDT table, and the service_id according in the described SDT table finds corresponding notification message describing word notification_descriptor;

The event handling unit is used for handling current event according to the entrained notification message of described notification message describing word notification_descriptor.

18. terminal as claimed in claim 17 is characterized in that, described notice acquiring unit specifically is used for:

Receive the SDT table, get access to one of them service_id by described SDT table; Find corresponding notification message describing word notification_descriptor according to accessed service_id.

19. terminal as claimed in claim 17 is characterized in that, described notice acquiring unit specifically is used for:

Receive network information table NIT, from described NIT table, get access to the serivice_id of notification message describing word notification_descriptor correspondence;

After receiving described SDT table, find described notification message describing word notification_descriptor according to the serivice_id that obtains from the NIT table, and handle current event according to the entrained notification message of described notification message describing word notification_descriptor.

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