Session information query methods, network element and computer memory medium
A technology of session information and query method, which is applied in the direction of electrical components, wireless communication, network data management, etc., can solve the problems of complicated PCF addressing operation and high overhead, and achieve the goal of solving data inconsistency, simplifying operation, and simplifying network elements Effect
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example 1
[0237] This example provides a method for querying session information. Before addressing policy-controlled network elements, plan the IP address pool of the SMF and pre-configure the mapping relationship between the SMF and the IP address segment on the network elements with open functions, as shown in Figure 8 Specifically, it may include:
[0238] Step S1: Plan the IP address pool of the SMF, and preset the mapping relationship between the SMF and the IP address segment on the NEF.
[0239] Step S2: AF sends AF request to NEF;
[0240] Step S3: The NEF queries the mapping relationship between the SMF and the IP address segment to find the address of the SMF that manages the PDU session of the UE.
[0241] Step S4: The NEF initiates a PCF address query request to the SMF, carrying the IP address of the UE.
[0242] Step S5: The SMF queries the context of the UE according to the IP address of the UE, and obtains the address of the PCF bound to the UE;
[0243] Step S6: SM...
example 2
[0257] This example provides a method for querying session information. Before PCF addressing, plan the IP address pool of SMF and NRF pre-configures the mapping relationship between SMF and IP address segments, such as Figure 9 Specifically, it may include:
[0258] Step S11: Plan the IP address pool of the SMF, and preset the mapping relationship between the SMF and the IP address segment on the NRF.
[0259] Step S12: AF sends AF request to NEF.
[0260] Step S13: The NEF initiates a query request for the SMF address to the NRF, carrying the IP address of the UE: specifically, if there is no mapping relationship configured on the NEF and no PCF address, query the NRF to obtain the address of the SMF;
[0261] Step S14: NRF returns the address of SMF based on the mapping relationship;
[0262] Step S15: The NEF initiates a PCF address query request to the SMF, carrying the IP address of the UE,
[0263] Step S16: The SMF queries the UE context according to the IP address...
example 3
[0278] According to 23.501, in the roaming scenario, the SMF that performs session management and assigns the UE's IP address and the PCF with the PDU session can be in the same PLMN.
[0279] If the local breakout roaming scheme is adopted, the SMF that performs session management and assigns IP addresses and the PCF that has a PDN session is in the visited network (that is, the visited network), and the NEF address pre-configured by the AF is the visited network NEF, and the vSMF is queried through the visited network NEF.
[0280] If the home routed roaming scheme is adopted, the SMF that performs session management and assigns the IP address of the UE and the PCF that has a PDN session are in the home network (home network), and the NEF address pre-configured by the AF is the home network NEF, and the hSMF is queried through the home network NEF .
[0281] Because the NEF and SMF are also in the same PLMN, you can configure the mapping relationship between the SMF and the IP...
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