Method and equipment for constructing local Internet protocol access (LIPA) packet data network (PDN) connection
An establishment method and a connection establishment request technology, which are applied in the field of LIPA PDN connection establishment, can solve problems such as inability to initiate PDN, UE inability to access a local network, etc., and achieve the effect of ensuring normal establishment
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Embodiment 1
[0051] Embodiment 1 of the present invention provides a method for establishing a LIPA PDN connection, which is a processing method for LIPA conditional APN, such as figure 2 As shown, the method includes the following steps:
[0052] In step 201, after moving to a CSG cell (taking CSG cell 1 as an example), the UE determines that it needs to initiate a LIPA PDN connection for a specified APN (taking APN1 as an example).
[0053] It should be noted that when the UE moves to the CSG cell, the network side can notify the UE of the information (APN1) that the CSG cell (CSG cell 1) supports the establishment of the LIPA PDN connection initiated by the designated APN for the LIPA PDN connection. After that, The UE can learn that APN1 is used for LIPA PDN connection in CSG cell 1.
[0054] In addition, the information of the designated APN used to initiate the LIPA PDN connection for each CSG cell can also be configured on the UE (such as the SIM card of the UE). Based on the conf...
Embodiment 2
[0075] Embodiment 2 of the present invention provides a method for establishing a LIPA PDN connection, which is a processing method for LIPA conditional APN, such as image 3 As shown, the method includes the following steps:
[0076] Step 301, configure the following policies on the MME.
[0077] (1) When judging whether the LIPA Conditional APN is congested, it is only judged for the non-LIPA PDN connection using the APN in the core network and the PGW in the core network corresponding to the APN.
[0078] (2) For the LIPA PDN connection connected to the local network using this APN, the network side does not perform APN congestion control.
[0079] In step 302, the UE sends a PDN connection establishment request using LIPA conditional APN on the macro cell.
[0080] In step 303, the MME rejects the PDN connection establishment request, and sends an SM back-off timer in the PDN connection establishment rejection message.
[0081] In step 304, the UE starts the SM back-off t...
Embodiment 3
[0089] Based on the same inventive concept as the above method, an embodiment of the present invention also provides a network side device, such as Figure 5 As shown, the network side equipment includes:
[0090] The receiving module 11 is configured to receive a packet data network PDN connection establishment request for a designated access point APN from a user equipment;
[0091] A determination module 12, configured to determine that the PDN connection is a local IP access LIPA PDN connection or a non-LIPA PDN connection when the specified APN is in a congested state;
[0092] A processing module 13, configured to accept the LIPA PDN connection establishment request of the user equipment if the PDN connection is a LIPA PDN connection;
[0093] If the PDN connection is a non-LIPA PDN connection, perform congestion control on the PDN connection establishment request.
[0094] The determination module 12 is specifically configured to determine the PDN connection as LIPA ...
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