Emergency bearing-establishing method and communication system for emergency call service
An emergency call and emergency bearer technology, applied in emergency/dangerous communication services, wireless communication, wireless communication services, etc., can solve problems such as failure to provide relevant solutions, user personal or property damage, and difficulty in carrying out emergency call services , to recover the loss
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Embodiment 1
[0067] Based on the existing PDN connection release process, the emergency bearer establishment process is performed. It is assumed that multiple PDN connections are established between the UE and the network side, and the UE has the ability to choose to release a certain PDN connection. In the first embodiment, the IP-CAN network is EPS, the mobility management node is MME, and the wireless access control The device is an eNB.
[0068] see image 3 , image 3 It is a flow chart of realizing the user emergency call service in the PS domain in the first embodiment, and the process includes the following steps:
[0069] Step 301, the UE sends a PDN connection release request (PDNDisconnection Request) message to the MME through the eNB, and the release request message carries an emergency call request message.
[0070] The PDN connection release request message in step 301 also includes the UE identifier and the default bearer identifier (LBI) of a PDN connection requested to...
Embodiment 2
[0106] In the second embodiment, the IP-CAN network is a GPRS network, the mobile management node is an SGSN, and the wireless access control device is a RAN, see Figure 4 , Figure 4 It is a flow chart of realizing the user emergency call service in the PS domain in the second embodiment, and the flow may include the following steps:
[0107] Step 401, the UE sends a PDN connection release request message to the SGSN through the RAN, that is, a Deactivate PDP Context Request (Deactivate PDP Context Request) message, and the Deactivate PDP Context Request message carries an emergency call request message, that is, an emergency PDP Context is activated request message.
[0108] The deactivation PDP context request message may also include the UE identifier, the deactivation PDP context identifier (Linked NSAPI), and may further include a deactivation message interaction identifier (TI), a deactivation reason, etc., and the deactivation reason may be indicated for establishing...
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