Realize the method of ue registration p-cscf, mme equipment and pgw equipment

Abstract

The invention discloses a method of UE to register a P-CSCF, an MME device, and a PGW device. The method comprises the following steps: the MME device sends a first session creation request message tothe SGW device after receiving a bearer establishment request message of an IMS APN sent by the UE, wherein the information carried in the first message comprises an address of a target APN and the address of a target PGW device, and the target APN is an APN configured by an HSS for the UE in advance; the MME device receives a session creation response message sent by the SGW device, wherein themessage carries a target IP address allocated by the target PGW device to the UE and the address of a target P-CSCF device corresponding to the target APN; the MME device sends a bearer establishmentresponse message carrying the target IP address and the address of the target P-CSCF device to an eNB, so that the UE sends a registration request to the target P-CSCF device based on the target IP address and the address of the target P-CSCF device obtained from the eNB, and the UE registers the target P-CSCF device. By adoption of the method disclosed by the invention, a function of enabling theUE to flexibly register a specific P-CSCF is achieved.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method for realizing UE registration with P-CSCF, MME equipment and PGW equipment. Background technique [0002] The Mobility Management Entity (MME) is the key control node of the Long Term Evolution (LTE) network of the 3rd Generation Partnership Project (3rdGeneration Partnership Project, 3GPP) protocol, and it is responsible for the user equipment (User Equipment) in idle mode , UE) positioning, paging, simply speaking, the MME is responsible for the signaling processing part. [0003] The Serving Gateway (Server Gateway, SGW) is the gateway in the LTE network that terminates in the Evolved-Universal Terrestrial Radio Access Network (Evolved-Universal Terrestrial Radio Access Network, E-UTRAN), and is mainly responsible for the routing and forwarding of data packets, which is equivalent to The traditional serving GPRS support node (Serving GPRS Support Node,...

AI Technical Summary

Problems solved by technology

[0028] The above-mentioned existing technology is mainly based on the characteristics of multi-services. After obtaining multiple P-CSCF addresses from the network side, select a P-CSCF with the same network address, so as to avoid multiple services from multiple registration requests to multiple P-CSCFs. , thereby reducing the delay of network access, but it is impossible for UE to register to a specific SBC according to requirements

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