Background technology
Third generation collaborative project tissue (3GPP, The 3rd Generation Partnership Project) tsunami warning system (ETWS has been proposed, Earthquake and Tsunami Warning System), constantly notify the user in incident generation or imminent first, increase the chance that the user saves oneself, reduce the harm that major disasters such as tsunami and earthquake bring.
Fig. 1 has described the network frame figure of ETWS system, and the seismic sea wave alarm center GEC of government (Government ETWS Centre) is the source that provides of disaster information such as tsunami earthquake; CBC (CBC, Cell Broadcasting Centre) is responsible for information broadcast; UTRAN is by one group of RNS (RNS, Radio Network Subsystem) forms, RNS (RNS, Radio Network System) comprises a radio network controller (RNC, Radio NetworkController) and one or more base station (NodeB).Iu-BC Interface is meant the Iu interface of CBC and RNC among Fig. 1, is used to carry SABP (Service Area Broadcast Protocol) service protocol; The UU interface is meant the interface of UTRAN and UE.
In the ETWS system disaster announcement information is divided into two classes, documentary whip (Primary Notification) and assistant notification (Secondary Notification).When disaster event takes place, documentary whip is used to notify the message such as type of portable terminal disaster, portable terminal (UE, User Equipment) adopt particular form such as methods such as jingle bell and vibration in time to notify the user to save oneself after receiving, regulation must be finished the documentary whip information complete transport process of mansion shake tsunami warning center to user terminal of going into politics in the ETWS system in 4 seconds; Assistant notification is used to indicate the user to obtain to help, and information such as refuge distribution are provided, and the regulation assistant notification must be finished the transport process from GEC to the user terminal in the ETWS system in 10 seconds to 30 seconds.
Determined at present in the ETWS system that UE is in the Notification Method under idle condition (IDLE), cell paging state (CELL_PCH) or the UTRAN Acceditation Area paging state (URA_PCH), documentary whip is realized by paging (as by paging Class1 message), is guaranteed to notify UE in 4 seconds; Assistant notification then is to realize by Cell Broadcast CB (Cell Broadcasting) mode or system information broadcast (System Information Broadcasting) mode, guarantees to notify UE at 10 seconds in 30 seconds; And 3GPP has only determined to be among the UTRAN idle condition (IDLE), cell paging state (CELL_PCH) or UTRAN Acceditation Area paging state (URA_PCH) user's disaster information notice method, disaster Notification Method when not relating to UE and being in other state is so the portable terminal that need provide a kind of feasible method to be in CELL_DCH state or CELL_FACH state in UTRAN sends ETWS disaster announcement information.
Summary of the invention
The technical problem to be solved in the present invention provides the sending method of documentary whip information and disaster announcement information in a kind of seismic sea wave system, can in the ETWS system requirements time disaster announcement information and documentary whip information in earthquake or the tsunami warning system be sent to the portable terminal that is in CELL_DCH state or CELL_FACH state.
In order to address the above problem, the invention provides the sending method of documentary whip information in a kind of seismic sea wave system, comprise: after radio network controller (RNC) is received the disaster announcement information of tsunami warning system, interface by grounding wireless access network and portable terminal is that the UU interface sends UU interface dedicated notification message to the portable terminal that is in CELL _ DCH status or sub-district _ forward access channel status, carries documentary whip information in the described dedicated notification message.
Further, described documentary whip information comprises disaster type information, affected area domain information and time of origin information.
Further, also comprise the assistant notification indication information in the described dedicated notification message, carry CBCH information in the described assistant notification indication information; After described radio network controller is received the disaster announcement information of tsunami warning system, affected area domain information according to the indication of documentary whip information, search the sub-district in this zone, if also do not set up the CBCH resource in this sub-district, described radio network controller is initiated the foundation of CBCH resource to this sub-district.
Further, described radio network controller sends assistant notification information to portable terminal in the mode of cell broadcast messages by described CBCH.
Further, after described portable terminal is received described dedicated notification message, know corresponding CBCH, receive cell broadcast messages by described CBCH according to the indication information of assistant notification, obtain assistant notification information, and to the content of user prompt assistant notification information.
Further, carry the security signature information of documentary whip information and assistant notification indication information in the described dedicated notification message; After described terminal is received dedicated notification message, therefrom parse the security information of tsunami warning system documentary whip information, judge according to described security information whether this documentary whip information is reliable, if, parse tsunami warning system documentary whip information, to User Alarms; Otherwise, ignore this dedicated notification message.
Further, government's seismic sea wave alarm center is sent to core network element with seismic sea wave warning system disaster announcement information; Described core network element is according to the affected area domain information in the described seismic sea wave warning system disaster announcement information, and only the radio network controller in described involved area sends the Cell Broadcast CB content and replaces message; Described core network element is replaced message in described Cell Broadcast CB content and is carried described seismic sea wave warning system disaster announcement information, and described disaster announcement information comprises documentary whip information and assistant notification information.
Further, described core network element is meant CBC, perhaps, comprises the multimedia broadcast multicast services network element of broadcast multicast services center, gateway general grouping service wireless support node, GPRS support node.
Further, carry described dedicated notification message by special logic passage or common logical.
The present invention also provides the sending method of disaster announcement information in a kind of seismic sea wave system, comprise: after radio network controller (RNC) is received the disaster announcement information of tsunami warning system, interface by grounding wireless access network and portable terminal is that the UU interface sends UU interface dedicated notification message to the portable terminal that is in CELL _ DCH status or sub-district _ forward access channel status, carries documentary whip information in the described dedicated notification message; Described radio network controller sends assistant notification information by cell broadcast messages.
The present invention can guarantee that ETWS documentary whip information and assistant notification information send to the UE that is in CELL_DCH state or CELL_FACH state in the time of the requirement of ETWS system, reach the requirement of ETWS system.
Embodiment
The present invention proposes a kind of method that sends ETWS disaster announcement information and documentary whip information to the UE of CELL _ DCH (CELL_DCH) state or sub-district _ forward access channel (CELL_FACH) state, RNC sends the UU dedicated notification message by the UU interface to UE, and in specific messages, carry documentary whip information and assistant notification indication information, described assistant notification indication information indication supplementary sends by the mode of Cell Broadcast CB, RNC sends the particular content of supplementary by cell broadcast messages (CELLBROADCASTING), because under CELL_DCH or CELL_FACH state, dedicated notification message between UE and the RNC is carried on special logic passage (DCCH, Dedicated Control Channel) or common logical (CCCH, CommonControl Channel) on, use special use or the common radio resources of having distributed to UE, therefore notify the needed time of each UE considerably less by UU interface specific messages, the delivery time that can satisfy ETWS documentary whip information and assistant notification information reaches system requirements.
As shown in Figure 2, at the UE that is in CELL_DCH or CELL_FACH state, the method that sends ETWS documentary whip information and assistant notification information specifically may further comprise the steps:
Step 201, the seismic sea wave alarm center GEC of government gathers or predicts that disaster events such as tsunami and earthquake take place or when being about to take place, ETWS disaster announcement information is sent to relevant core net (CN, the core network) network element of ETWS; ETWS disaster announcement information comprises documentary whip information and assistant notification information;
Core network element is meant CBC CBC in specific embodiment shown in Figure 2.In actual applications, core network element can also be the relevant core network element of multimedia broadcast multicast services MBMS (MultimediaBroadcast Multicast Service), comprise: broadcast multicast services center BM-SC (Broadcast Multicast Service Center), gateway general grouping service wireless support node GGSN (Gateway GPRS Serving Node) and GPRS support node SGSN (Serving GPRS Supporting Node), this moment, ETWS documentary whip information sent to BM-SC from GEC, be sent to GGSN by BM-SC again, be sent to SGSN by GGSN again;
ETWS documentary whip information comprise following one or more: disaster type information, affected geographical area information, time of origin information.Comprise affected geographic area in the assistant notification information and indicate the user to succour concrete guide information etc.
Step 202, core network element sends to RNC with this message;
Core network element CBC sends the Cell Broadcast CB content by Iu-BC Interface to each RNC and replaces message (Write-Replace) in the embodiment shown in Figure 2, and replace in this Cell Broadcast CB content that to carry ETWS disaster announcement information in message be documentary whip information and assistant notification information, replace in message in this Cell Broadcast CB content that to indicate what carry by specific field be ETWS disaster announcement information.
CBC can also replace the security signature information that increases in the message ETWS documentary whip information in the Cell Broadcast CB content; to be used to protect this ETWS documentary whip information be true and accurate and do not have under attack; terminal is by judging above-mentioned security signature information; confirm whether ETWS documentary whip information is reliable; in like manner, CBC can also replace the security signature information that increases in the message the ETWS assistant notification information in the Cell Broadcast CB content.
CBC is according to the affected geographical area information in ETWS documentary whip information or the assistant notification information, and only the RNC in affected geographic area sends above-mentioned Cell Broadcast CB content and replaces message (Write-Replace).
Step 203, after RNC receives Write-Replace message, parse ETWS documentary whip information and assistant notification information, the CELL_DCH state that is under RNC control or the UE of CELL_FACH state send UU dedicated notification message (can adopt DCCH logic channel or CCCH logic channel to carry this UU dedicated notification message), ETWS alarm notification message (ETWSWARNTNG NOTIFICATION) for example, and in this message, carry ETWS documentary whip information and assistant notification indication, comprise the receive mode (for example CBCH information) and the relevant information of supplementary in the assistant notification indication.
The ETWS alarm notification message is as shown in the table:
| Information Element/Group name | Need | Type and reference | Note |
| Message Type | MP | Message Type | |
| UE information elements | | | |
| RRC transaction identifier | MP | RRC transaction identifier 10.3.3.36 | Referring to 3GPP TS 25.331 |
| Integrity check info | MP | Integrity check info 10.3.3.16 | Referring to 3GPP TS 25.331 |
| Primary Notification | OP | | |
| >warning type | MP | Enumerated (Earthquake, Tsunami, other) | The disaster alert type, for example earthquake, tsunami etc. |
| >Security Info | MP | Include Security Info For Time, area and other Infomation | The security signature information of documentary whip |
| Secondary Notification Indication | OP | | The assistant notification indication comprises the load mode of assistant notification and specifically passes a parameter.For example indicate assistant notification to transmit, and specify the concrete parameters of using such as CBS channel by CBS |
RNC passes through the UU dedicated notification message when UE sends ETWS documentary whip information, in the UU dedicated notification message, increase and want the notification information message unit, be used to carry the content of documentary whip information, comprising: the disaster type information, affected area information, time of origin.RNC can also increase a plurality of message elements and be used for representing respectively disaster type information, affected area information, time of origin information in the UU dedicated notification message; In described specific messages, increase assistant notification indication information message elements, be used to carry seismic sea wave warning system assistant notification indication information; If comprise security signature information in the ETWS documentary whip information that RNC parses, also comprise security signature information in the documentary whip informational message unit so.
After RNC receives Write-Replace message, according to the affected area domain information of indicating in documentary whip information or the supplementary, search the respective cell in this zone, if do not have the CBCH resource in the sub-district this moment, RNC finishes the foundation of initiating these resources.The Cell Broadcast CB resource also can set up in the sub-district or other any moment are finished foundation earlier.
The RNC only UE of the CELL_DCH state that is in its control influenced geographic area down or CELL_FACH state sends above-mentioned paging type 2 message or system information renewal Indication message.
RNC can send repeatedly UU dedicated notification message to UE, receives this information to guarantee terminal.
Step 204, after UE receives the UU dedicated notification message, know ETWS documentary whip information and assistant notification indication information, after confirming that according to security signature in the message ETWS documentary whip information and assistant notification indication information are effectively, by emergency alarm mode (as modes such as ring or vibrations) to this disaster information of user reminding; After the UE of support cell broadcaste service CBS receives the UU dedicated notification message,, read corresponding CBCH, wait for receiving assistant notification information according to the indication information of assistant notification in the message;
Do not support the UE that CBS and other business are carried out simultaneously, receive UU mouth dedicated notification message know have assistant notification to receive after, can remind the user to have assistant notification to need to receive in the mode of vibrations or jingle bell, determine whether that by the user stopping current business immediately receives cell broadcast information.
Step 205, RNC sends assistant notification information to portable terminal in the mode of cell broadcast messages by described CBCH;
Step 206, UE receives cell broadcast information by the CBCH known, obtains assistant notification and security signature information thereof, confirm that according to security signature assistant notification information effectively after, resolve and obtain the assistant notification information content; Remind the user to check the concrete guide information of indication user relief by emergency alarm mode (as modes such as ring or vibrations);
Step 207, RNC returns success response message to CBC;
Step 208, CBC returns success response message to GEC, and flow process finishes.
Adopt above-described method can guarantee that the user who is in CELL_FACH and CELL_DCH state among the UTRAN receives ETSWS documentary whip information and assistant notification message in the time of system requirements, satisfy the requirement of ETWS system.
The method that cell broadcast messages sends supplementary of passing through except shown in Figure 2 can also adopt the mode that sends multimedia broadcast and multicast service data to send assistant notification message.
The present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art are when making various corresponding changes and distortion according to the present invention, and these change and be out of shape the protection range that all should belong to the appended claim of the present invention accordingly.