System for implementing mobile communication based on WCDMA core network and terminal access method

Abstract

The present invention discloses a system for implementing mobile communication based on a wideband code division multiple access (WCDMA) core network and a user equipment (UE) access method. Said system includes a serving general packet radio service (GPRS) support node (SGSN), a gateway GPRS support node (GGSN) and an identity location register (ILR) connected with the SGSN and / or GGSN. Said GGSN is set for: maintaining the session connection of the UE; distributing a routing identifier (RID) for the UE; inquiring of the ILR directly or indirectly about the RID of the communication partner; maintaining the access identifier (AID) and RID mapping information of the UE and its communication partner; implementing the data packet routing and transfer; and controlling the inter-GGSN handover of the UE. Said SGSN or GGSN is set for: registering and un-registering the RID of the UE with the ILR. Said ELR is set for: receiving the registration and un-registration requests of the UE attached to the ELR; maintaining the AID-RID mapping information of the UE attached to the ILR; receiving the request for inquiring the RID of the UE; and returning the RID corresponding to the AID of the UE in the request to the inquiry requester. The present invention can implement the identity and location separation of the UE based on the network.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to a system for realizing mobile communication and a method for a terminal to access the system under the framework of a WCDMA core network system. Background technique [0002] The existing WCDMA system is currently an important system and method for realizing service access based on the wireless WCDMA technology. Its core network architecture is as Figure 1a shown. [0003] In order to complete the effective access of users, the system defines the following important functions: [0004] ●Network access control function [0005] ● Packet routing and forwarding function [0006] ●Mobility management function [0007] ● Logical link management function [0008] ●Radio resource management function [0009] ●Network management function [0010] Among them, the functional parts related to the present invention include network access control, packet routing and forwarding, and...

AI Technical Summary

Problems solved by technology

[0081] Problem 1: The GGSN remains unchanged, and there are routing detours

In this way, when the user moves, it is possible to move to a place far away from the GGSN but closer to the service source, resulting in a circuitous path

[0083] Problem 2: Data services are routed according to IP addresses, while user terminals use dynamic IP addresses, which affects user accessibility

In this way, sending services according to the IP address of the terminal will be limited to the time of one connection

However, if you want to send data services for terminals for a long time, you can only use static public IP addresses, so dynamic IP addresses have shortcomings in finding users

[0085] Question 3: Using a static public address as the IP address of the terminal will greatly restrict the mobility of users

Once moved to a far away place, it is impossible to access the external network nearby

detour

[0087] Problem 4: The mobility management process for business continuity is complex

[0089] Question 5: Multiple connections cause the use of multiple IP addresses, and the terminal needs to support multiple IP addresses

[0092] However, there is no corresponding implementation plan for how to implement a communication network with an identity and location separation architecture based on the WCDMA system

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