WO2008141501A1

WO2008141501A1 - Emergency broadcast mehtod based on multimedia broadcast

Info

Publication number: WO2008141501A1
Application number: PCT/CN2007/003665
Authority: WO
Inventors: Meiping Liu
Original assignee: Zte Corporation
Priority date: 2007-05-24
Filing date: 2007-12-18
Publication date: 2008-11-27
Also published as: CN101052145A

Abstract

An emergency broadcast method based on multimedia broadcast, the method includes the steps as follows: step S202, during broadcast of an multimedia service, carrying an emergency broadcast identifier indicating that the multimedia service is an emergency service and broadcasting the multimedia service in the case that the multimedia service is an emergency service; step S204, each network element having received the multimedia service being forced to transmit the multimedia service to a down stream network element immediately according to the emergency broadcast identifier; and step S206, an UE automatically receiving the multimedia service without being activated.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the field of communications, and in particular to an emergency broadcast method based on multimedia broadcasting. BACKGROUND OF THE INVENTION Multimedia Broadcast/Multicast (MBMS) is a point-to-multipoint service that enables a data source to send data to multiple users. MBMS not only enables plain text low-rate message-like multicast and broadcast, but also enables multicast and broadcast of high-speed multimedia services. MBMS is based on WCDMA/TD-SCDMA/GSM (Wideband Code Division Multiple Access/Time Division-Synchronous Code Division Multiple Access/Global System for Mobile Communications) packet network, by adding some new functional entities (eg, broadcast multicast services) Center (BM-SC)), for existing packet domain functional entities (eg, GPRS Service Support Node (SGSN), GPRS Gateway Support Node (GGSN), Radio Network Controller (RNC), and User Equipment (UE)) The MBMS function is added, and a new logical shared channel is defined to implement air interface resource sharing. The network reference model of MBMS is shown in Figure 1. In FIG. 1, the broadcast/multicast center (BM-SC) is connected to the gateway general wireless packet service (GPRS) support node GGSN through the Gmb interface and the Gi port, and one BM-SC can be connected to multiple GGSNs, and the GGSN passes The Gn/Gp interface is connected to the serving GRPS node SSGN, and one GGSN can be connected to multiple SGSNs, and the SGSN can be connected to the Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (UTRAN) through the Iu interface, and then the UTRAN is moved and transmitted through the Uu interface. The terminals are connected, and the SGSN can also be connected to the Global System for Mobile Communications Enhanced Radio Access Network (GERAN) through the Iu/Gb interface, and the GERAN is connected to the mobile terminal through the Um interface. In this model, the process of receiving broadcast services by users is as follows:

(1) Announcement, which is used to notify the user of the services that the service provider can provide, and other business-related information;

(2) A user join process (Joining), which is used to implement a request for a user to join a multicast group to a service network; (3) Session Start process, which is used by the BM-SC to prepare to send data;

(4) Notification process ( Notification), in which R C notifies the user that MBMS multicast starts immediately;

(5) Data transfer, in the process of user multimedia data transmission;

(6) The session termination process (Session Stop), in which the BM-SC indicates the end of the session and releases the resource. For the multimedia broadcast service, the user can activate the broadcast service on the terminal side, that is, the user activates the broadcast service of interest on the terminal side, and enters the corresponding broadcast channel for viewing, and then can receive the broadcast service. Since the multimedia broadcast service is for the broadcast of the physical location area, as long as the user enters these areas, the corresponding broadcast can be received by setting the terminal, but in fact, not all users in these areas can receive the broadcast, especially For users roaming to these areas, they cannot accept any multimedia broadcast service services in the area. In an emergency or critical situation, for example, in the case of inclement weather, serious traffic accidents, serious criminal activities, severe geological disasters, etc., it is clear that the user hopes that without any settings for the multimedia broadcasting service, Received these emergency broadcasts. However, according to the current situation of the multimedia broadcast service, the user must receive the multimedia service locally to receive the service, so the current multimedia service network cannot enable each user to obtain emergency information in an emergency. Therefore, in some cases, it is necessary to enable all users in a certain area to receive emergency information, but unfortunately, no relevant technical solutions have been proposed yet. SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is a primary object of the present invention to provide a method for implementing an emergency broadcast using a multimedia broadcast service, which can enable a terminal without any activation of a multimedia broadcast service. , received an emergency broadcast. According to an embodiment of the present invention, an emergency broadcast method based on multimedia broadcasting is provided. The method includes the following steps: Step S202: In the case that the multimedia service is an emergency service, the emergency broadcast identifier for indicating that the multimedia service is an emergency service is carried in the broadcast process of the multimedia service, and the multimedia service is sent; Step S204, receiving Each network element to the multimedia service immediately and forcibly transmits the multimedia service to the downlink network element according to the emergency broadcast identifier; and in step S206, the user equipment automatically receives the multimedia service without being activated. The step S202 may include the following processes: The broadcast multicast center sends a session start message; the broadcast multicast center acquires and sends the multimedia broadcast content through the Gi port. Alternatively, the following processing may be included in the step S202: the broadcast multicast center sends a tongue start message; after receiving the session response message, or after the time required to establish the bearer arrives, the broadcast multicast center acquires and sends the message through the Gi port. Multimedia broadcast content. When the broadcast multicast center sends the session start message, the broadcast multicast center may carry the emergency broadcast identifier in the start message. In addition, the following processing may be further included in step S202: the broadcast multicast center directly acquires and passes the Gi port. Sending the multimedia broadcast content. At this time, the broadcast multicast center carries the emergency broadcast identifier in the IP header or other data segment of the data stream transmitted by the Gi port. Moreover, the principle of carrying the emergency broadcast identifier in the data stream transmitted by the Gi port YES: The GGSN, the SGSN, and the RNC/BSC implemented by the Gi interface can be quickly resolved to the emergency broadcast identifier. Accordingly, in step S204 of the method, the multimedia broadcast service is received without establishing the bearer plane. The network element sends the multimedia service to all the downlink network elements required by the service plane. When the bearer plane is established in step S204, the network element that receives the multimedia broadcast service sends the multimedia service to all the downlink network elements included in the bearer plane. In addition, in the above step S206, the user equipment transmits an emergency service alert tone to the user. With the above technical solution of the present invention, the user within the coverage of the multimedia broadcast service can receive the emergency broadcast service in time without any setting (for example, activation), thereby providing the user with more thoughtful services. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are set to illustrate, illustrate, Improperly qualified. In the drawings: FIG. 1 is a block diagram of an MBMS network structure according to the related art; FIG. 2 is a flowchart of a multimedia broadcast based emergency broadcast method according to an embodiment of the present invention; FIG. 3 is a multimedia broadcast based on an embodiment of the present invention. Flowchart of the BM-SC for emergency broadcast session start processing in the emergency broadcast method; FIG. 4 is a GGSN, SGSN, RC/BSC session start processing for emergency broadcast in the multimedia broadcast based emergency broadcast method according to an embodiment of the present invention; FIG. 5 is a flowchart of implementing GGSN, SGSN, RNC/BSC for emergency broadcast through a Gi port in an emergency broadcast method based on multimedia broadcast according to an embodiment of the present invention; and FIG. 6 is based on an embodiment of the present invention A flowchart of processing performed by a terminal on an emergency broadcast in an emergency broadcast method of multimedia broadcasting. In the BM-SC, the BM-SC sends a session start message before the MBMS service starts, and needs to wait for the downlink NE to establish a bearer plane before sending the multimedia broadcast service, so the BM-SC sends the session. It takes a long enough time to start the request to send the actual multimedia service flow or data file, which is obviously not conducive to the notification of emergency messages. Based on this, the present invention improves the multimedia session of the MBMS, and introduces special processing for the emergency broadcast to the terminal to support the multimedia emergency broadcast, so that the terminal can quickly receive the emergency message. The invention will be described in detail below with reference to the accompanying drawings. In an embodiment of the present invention, an emergency broadcast method based on multimedia broadcasting is provided. As shown in FIG. 2, in step S202, when the multimedia service is an emergency service, the emergency broadcast identifier for indicating that the multimedia service is an emergency service is carried in the broadcast process of the multimedia service, and the multimedia service is sent; Step S204, receiving Each of the network elements to the multimedia service immediately and forcibly transmits the multimedia service to the downlink network element according to the emergency broadcast identifier; and in step S206, the UE automatically receives the multimedia service without being activated, and preferably, the UE sends an emergency service prompt to the user. To remind the user to watch the message. In step S202, the user may select to send a session start message, or may select The content of the multimedia service (emergency service) is directly obtained without sending the session start message, and the multimedia service is sent through the Gi port. In the case that the sending session start message is selected, the specific start time is not specified for the sending of the emergency service, and the general requirement is to be delivered as soon as possible, and the administrator can further select whether to wait for the session start response message to be received before sending the emergency service content. For example, after sending the session start message, the BM-SC may send the data of the multimedia service immediately after receiving the session start response message, without waiting for the time when the bearer is established; or in a very urgent situation, starting at the sending session After the message, the BM-SC immediately sends the data of the multimedia service without waiting for the session to start responding to the message. Specifically, step S202 may include various processes as follows:

(1) At the beginning of the session, the BM-SC sends a session start message and acquires the multimedia broadcast content, and then transmits the multimedia broadcast content through the Gi port; in this case, the BM-SC does not need to wait for the session start response message. In contrast to this case, in the following processing, the BM-SC needs to wait for a session start response message. (2) At the beginning of the session, the BM-SC sends a message to start the message, and after receiving the response message, or when the time required to establish the bearer arrives, the multimedia broadcast content is acquired, and then the multimedia broadcast content is sent through the Gi port. In the above two processes, the BM-SC may carry an emergency broadcast identifier (ie, a flag) in a parameter (eg, quality of service (Qos)) of the transmitted session start message to determine the received multimedia in subsequent processing. Whether the business is an emergency business.

(3) In addition, the BM-SC may also choose not to send the tongue start message. At this time, when broadcasting the multimedia service to all areas covered by the BM-SC broadcast, the BM-SC directly acquires the multimedia broadcast content and passes the Gi port. Send multimedia broadcast content without sending a session start message. In this case, the BM-SC can carry the emergency broadcast identifier in the IP header or other data segment of the data stream transmitted by the Gi port. Moreover, the principle of carrying the emergency broadcast identifier is: enabling the GGSN, SGSN, RC/BSC implemented through the Gi port to quickly resolve to the emergency broadcast identifier, so as to immediately process the emergency broadcast stream. The above processing in step S202 will be described in more detail below in connection with Example 1 and Example 2. Description. Then, in step S204 of the method, if the bearer plane is not established, the network element that receives the multimedia broadcast content sends the multimedia content to all the downlink network elements requested by the service; and the bearer plane is established in step S204. In this case, the network element that receives the multimedia broadcast content sends the multimedia content to all the downlink network elements included in the bearer plane. The above-described processing in step S204 will be described in more detail below in connection with Example 3. A multimedia broadcast based emergency broadcast method according to an embodiment of the present invention will be further described below with reference to specific examples. It is to be noted that the following examples are given to provide a thorough understanding of the invention, and not to limit the invention. Example 1: Operation Example of Step S202 FIG. 3 is a flowchart of a BM-SC session start process for an emergency broadcast in a method according to an embodiment of the present invention. As shown in FIG. 3, the method includes the following steps: Step 300: The BM-SC receives a request for an emergency broadcast, which is generally from a customer service system of the BM-SC operator, or an emergency broadcast that is authorized by the operator. The BM-SC reads the configuration message, and determines whether it is necessary to send a session start request when transmitting the emergency broadcast according to the configuration. Step 320, if it is determined in step 310 that the tongue request message needs to be sent, the BM-SC sends the message to the GGSN. Sending a session request, the area in the session request is determined by the operator in the BM-SC configuration; Step 330, the BM-SC determines whether a waiting session start response message is configured for the emergency broadcast; Step 340, if it is determined in step 330 that there is no waiting session When the BM-SC starts to respond, the BM-SC obtains the emergency broadcast content, and sends an emergency broadcast through the Gi port. The BM-SC can encapsulate the identifier of the emergency service in the message header of the emergency broadcast content. Step 350, if it is selected in step 330, it needs to wait for the session to start. In response, the BM-SC waits for the session to start responding according to the configured wait time. 360, BM-SC connection ") will live under Start Response message; Step 370, determine whether the session needs to carry whether emergency service content; Step 380, if it is determined in step 370 that it is not an emergency service, wait for the downlink node (ie, the network element) to establish a bearer plane time and then send the data stream or data file; and step 390, if it is determined in step 370, The emergency broadcast, or after the normal multimedia broadcast message waits in step 380, obtains the multimedia broadcast content, and sends the multimedia broadcast content to the downlink node through the Gi port. Example 2: Operation Example of Step S202 FIG. 4 is a flowchart of a GGSN, SGSN, RNC/BSC session start processing for an emergency broadcast in a method according to an embodiment of the present invention. As shown in FIG. 4, the method includes the following steps: Step 400: The GGSN, the SGSN, and the RNC/BSC receive a multimedia session start request message from the uplink node. Step 410: Determine, according to parameters in the session start request message, whether the message belongs to an emergency broadcast. Step 420, if it is determined in step 410 that it is not an emergency broadcast, retain all processing flows of the original protocol; and step 430, if it is determined in step 410 that the message is an emergency broadcast, according to the service area in the session start message The list immediately sends a session start request message to the downlink node, and carries the emergency only instance 3: Operation example of step S204 FIG. 5 is a GGSN, SGSN, RNC/BSC for emergency in the multimedia broadcast based emergency broadcast method according to an embodiment of the present invention. Broadcast flowchart implemented by the Gi port. As shown in FIG. 5, the method includes the following steps: Step 500: The GGSN, the SGSN, and the RNC/BSC receive the multimedia broadcast content sent by the uplink node through the Gi port. Step 510: Determine, according to the parameter of the multimedia broadcast content, whether it belongs to the emergency broadcast. Step 520, if it is determined in step 510 that it is not an emergency broadcast, retain all processing procedures of the original protocol; Step 530: If it is determined in step 510 that it is an emergency broadcast, it is first determined whether the bearer plane has been established for the emergency broadcast service; Step 540, if it is determined in step 530 that the 7-carrier plane has been established, it is immediately included in the planting plane. The downlink node sends an emergency broadcast; and step 550, if it is determined in step 530 that the bearer plane is not established, an emergency broadcast is sent to all the provincial nodes connected to the node. Example 4: Operation Example of Step S206 FIG. 6 is a flowchart of processing of execution of an emergency broadcast by a terminal in an emergency broadcast method based on multimedia broadcasting according to an embodiment of the present invention. As shown in FIG. 6, the method includes the following steps: Step 600: Add a detection of a broadcast service to a terminal, and if an emergency broadcast is detected, receive an emergency broadcast. For other multimedia broadcast services, the processing is performed according to the existing protocol, that is, the terminal only receives the multimedia broadcast service activated locally at the terminal, and does not receive the multimedia broadcast service that is not activated locally at the terminal; Step 610: When the terminal receives the emergency broadcast, the emergency service prompt tone is sent to prompt the user to view; and in step 620, the terminal provides the emergency broadcast content in a very convenient manner for the user to conveniently view and listen to, for example, the terminal screen can be The emergency broadcast content is presented by direct display or the like. It can be seen that, in order to avoid spending time between sending a session start message and receiving its response message, and taking time in the establishment process of each bearing surface, the present invention improves the session flow of the MBMS multimedia broadcast, and increases the emergency. The broadcast mark, the multimedia broadcast service prioritizes the emergency broadcast through each node, and enables the terminal to support emergency broadcast, thereby implementing emergency broadcast in the MBMS service. By means of the technical solution of the present invention, the terminal can be made to receive an emergency broadcast without any activation of the multimedia broadcast service, thereby providing a more thoughtful service for the user. The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

Claim

An emergency broadcast method based on multimedia broadcasting, comprising:

Step S202, in the case that the multimedia service is an emergency service, carrying an emergency broadcast identifier for indicating that the multimedia service is an emergency service, and broadcasting the multimedia service in a broadcast process of the multimedia service;

Step S204: Each network element that receives the multimedia service immediately and forcibly sends the multimedia service to the downlink network element according to the emergency broadcast identifier;

Step S206: The user equipment automatically receives the multimedia service without being activated.

The emergency broadcast method according to claim 1, wherein the step S202 includes the following processing:

The broadcast multicast center sends a tongue start message;

The broadcast multicast center acquires and transmits the multimedia broadcast content through the Gi port.

The emergency broadcast method according to claim 1, wherein the step S202 comprises the following processing:

The broadcast multicast center sends a tongue start message;

The broadcast multicast center acquires and transmits the multimedia broadcast content through the Gi port after receiving the session response message or when the time required to establish the bearer arrives.

The emergency broadcast method according to claim 2 or 3, wherein the broadcast multicast center carries the emergency broadcast identifier in the session start message.

The broadcast multicast center directly acquires and transmits the multimedia broadcast content through the Gi port.

6. The emergency broadcast method according to claim 5, characterized in that

The broadcast multicast center carries the emergency broadcast identifier in an IP header or other data segment of a data stream transmitted by the Gi port.

The emergency broadcast method according to claim 6, wherein the principle of carrying the emergency broadcast identifier is: enabling GGSN, SGSN, RNC/BSC implemented by the Gi port to quickly resolve to the emergency Broadcast identifier.

The emergency broadcast method according to claim 2, 3, or 5, wherein, in the step S204, if the bearer plane is not established, the network element that receives the multimedia broadcast service is All downlink network elements required by the service send the multimedia service.

The emergency broadcast method according to claim 2, 3, or 5, wherein, in the step S204, when the bearer plane is established, the network element of the multimedia broadcast service is received All downlink network elements included in the bearer plane send the multimedia service.

The emergency broadcast method according to claim 1, wherein in the step S206, the user equipment sends an emergency service prompt tone to the user.