Switching method, equipment and system
A technology for identifying and feeding back messages, applied in wireless communications, electrical components, etc., to solve problems such as data channel establishment errors, inability to guarantee business continuity and data integrity, and inability to guarantee business continuity and integrity.
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Embodiment 1
[0084] see image 3 , which shows a flow of a handover method applied to a serving gateway S-GW provided by an embodiment of the present invention, in which the serving gateway S-GW includes a separate control plane S-GWC and a user plane S-GWU, The method can include:
[0085] S301: The S-GWC receives the S-GW change identifier transmitted by the MME;
[0086] Wherein, the S-GW change flag is used to indicate that the S-GWU in the S-GW is changed and the S-GWC in the S-GW is not changed.
[0087] In a specific implementation, such as figure 2 As shown, the control plane S-GWC of the S-GW is connected to the MME and performs data exchange through the S11 interface.
[0088] It should be noted that after receiving the path switch request message sent by other network elements, such as the radio access network element eNodeB or the tracking area update message sent by the user, the MME confirms that the S-GWC in the S-GW does not When a change occurs but the S-GWU changes, ...
Embodiment 2
[0110] see Figure 7 , which shows a flow of a handover method applied to a mobility management entity MME provided by an embodiment of the present invention, and the method may include:
[0111] S701: The MME generates an S-GW change identifier according to the handover instruction, and sends the S-GW change identifier to the S-GWC;
[0112] Wherein, the S-GW change flag is used to indicate that the S-GWU in the S-GW is changed and the S-GWC in the S-GW is not changed.
[0113] It should be noted that, in this embodiment, the opposite end of the MME is the serving gateway S-GW whose control plane and user plane are separated; in a specific implementation, the MME is connected to the control plane S-GWC of the S-GW , and perform data interaction through the S11 interface.
[0114] In the specific implementation process, the MME can determine that the S-GWC does not change according to the handover instruction, and determine that the S-GWU has changed according to the current...
Embodiment 3
[0131] Based on the same technical idea of embodiment one and embodiment two, see Figure 9 , which shows a specific implementation process of a handover provided by the embodiment of the present invention. In this embodiment, the location change caused by the movement of the user equipment UE, which leads to the update of the tracking area TA, is used as an example for illustration. The specific process may include:
[0132] S901: UE sends a tracking area update message;
[0133] S902: The MME determines according to the tracking area update message that the S-GWU in the S-GW has changed and the S-GWC in the S-GW has not changed;
[0134] S903: The MME sends a session creation request to the S-GWC;
[0135] Wherein, the session creation request includes an S-GW change identifier for indicating that the S-GWU in the S-GW is changed and the S-GWC in the S-GW is not changed.
[0136] S904: The S-GWC selects an S-GWU from its corresponding S-GWU group according to the S-GW ch...
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