Method and apparatus for processing user equipment context

Abstract

The invention discloses a method and a device for processing UE (User Equipment) context. The method for processing the UE context comprises the following steps: an access network discovery and selection functional entity receives a deletion instruction message after the status of UE is changed, and deletes the UE context corresponding to the UE according to the deletion instruction message. The device for processing the UE context comprises UE, wireless network equipment and an access network discovery and selection functional entity which correspond to the above method. By adopting the embodiment of the invention, an ANDSF (Access Network Discovery and Selection Function) is enabled to delete invalid UE context in time, so that the problems that the stored junk data is too much and data is transmitted to wrong UE are avoided.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a method and device for processing user equipment context. Background technique [0002] In order to meet the challenges of wireless broadband technology, Long Term Evolution (LTE) defines a new communication network architecture - Evolved Packet System (EPS), EPS integrates multiple access methods , including 3GPP access, trusted non-3GPP access, and untrusted non-3GPP access. After user equipment (User Equipment, UE), or called user equipment, accesses the network, the Access Network Discovery and Selection Function (ANDSF) in the network collects the network status information of the access network, Such as load status, etc., according to the relevant policies of the operator, such as the access mode available to the UE, the access network information and handover policy are sent to the UE, and the UE switches to the corresponding access network accordi...

AI Technical Summary

Problems solved by technology

[0003] In an EPS network, the UE's IP address is generally dynamically allocated by the Packet Data Network Gateway (P-GW). When the UE status changes, such as the UE leaving the network or releasing the IP address, the UE's IP address may It will be assigned to another UE. However, since ANDSF cannot perceive the change of the UE state, it still records the context of the original UE. Therefore, when ANDSF sends data according to the recorded IP address, it may send the data to a wrong UE.

In the process of implementing the present invention, the inventor found that the prior art has the following problems: after the UE state changes, because the ANDSF cannot perceive the UE state change in time, and thus cannot delete the invalid UE context in time, resulting in garbage data recorded in the ANDSF Too much, it is also possible to send data to the wrong UE

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