Patent Document ID: 9710513
Application ID: 14238904

Base Claim:
1. An access management method, comprising: a first Access Switching Router (ASR) detecting that a Mobile Node (MN) accessing the first ASR is offline, the first ASR querying a local Access Identity (AID) and Routing Identity (RID) mapping table, and determining a correspondent node of the offline MN; and the first ASR sending a mapping table entry update message carrying a mapping table entry corresponding to the MN in which the RID is set to be NULL to an Information Logging Router (ILR) and an Internet Interface Service Router (ISR) and a second ASR where the correspondent node is located, and the ILR, ISR and the second ASR setting an RID in a mapping table entry corresponding to the MN to be NULL according to the mapping table entry update message from the first ASR, which represents that the MN does not access any ASR currently; and when the ISR or the second ASR determines that an RID in a mapping table entry corresponding to a destination AID of a locally received message is NULL, the ISR or the second ASR discarding the locally received message.

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Claim 2:
2. The access management method according to claim 1 , further comprising: the MN reaccessing any ASR, the reaccessed ASR registering a new mapping table entry to the ILR, and establishing a mapping relationship between an RID of the reaccessed ASR and an AID of the MN.