Voice business continuity switching method
A voice service and continuity technology, applied in the field of communication, can solve problems such as inability to switch IMS sessions
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no. 1 example
[0086] image 3 For the first embodiment of the present invention based on figure 2 The flow chart of the method for voice service continuity handover (handover from LTE / SAE network access to CS domain access) under the SRVCC architecture is shown.
[0087] The core idea of this embodiment is: after the enhanced MSC receives the handover completion message (the MAP sends the end signal message), it delays sending the message notifying the MME that the handover has been completed, so as to realize that the MME delays instructing the policy control system to release the corresponding IMS session resource the goal of. like image 3 As shown, the method includes the following steps:
[0088] 301. After receiving the measurement request sent by the LTE / SAE wireless network element E-UTRAN, the UE sends a measurement report to the E-UTRAN, where the measurement report includes adjacent cell information;
[0089] 302. The E-UTRAN decides to initiate a handover according to the...
no. 2 example
[0120] Figure 4 For the second embodiment of the present invention based on figure 2 The flow chart of the method for voice service continuity handover (handover from LTE / SAE network access to CS domain access) under the SRVCC architecture is shown.
[0121] The core idea of this embodiment is: after the MME receives the handover completion message from PS to CS, it delays instructing the policy control system to release the IMS session resource. like Figure 4 As shown, the method includes the following steps:
[0122] 401. After receiving the measurement request sent by the LTE / SAE wireless network element E-UTRAN, the UE sends a measurement report to the E-UTRAN, where the measurement report includes adjacent cell information;
[0123] 402. The E-UTRAN decides to initiate a handover according to the adjacent cell information in the measurement report, and therefore sends a relocation request message to the MME;
[0124] 403. After receiving the relocation request me...
no. 3 example
[0154] Figure 5 For the third embodiment of the present invention based on figure 2 The flow chart of the method for voice service continuity handover (handover from LTE / SAE network access to CS domain access) under the SRVCC architecture is shown.
[0155] The core idea of this embodiment is: after receiving the handover completion message (MAP sends the end signal message), the enhanced MSC judges whether it has received the domain handover success response sent by the IMS domain (SCC AS), and reports to the MME after receiving the domain handover success response. Send PS to CS handover complete message. like Figure 5 As shown, the method includes the following steps:
[0156] 501. After receiving the measurement request sent by the LTE / SAE wireless network element E-UTRAN, the UE sends a measurement report to the E-UTRAN, where the measurement report includes adjacent cell information;
[0157] 502. The E-UTRAN decides to initiate a handover according to the adjac...
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