METHOD FOR HANDLING FAILURE OF A MME IN A LTE/EPC NETWORK
First Claim
1. Method for handling failure of a MME (Mobility Management Entity) in a LTE/EPC (Long Term Evolution/Evolved Packet Core) network or an EPS (Evolved Packet System),wherein multiple UEs (User Equipment) are attached to a first MME,wherein said first MME stores first context information representing the UEs attached to said first MME,wherein said UEs are connected to one of multiple eNBs (evolved NodeB),wherein said eNB may communicate with said first MME and with at least one neighboring MME, and wherein said UEs may communicate with said first MME and with said at least one neighboring MME via said eNB,characterized by the steps ofdetecting failure of said first MME,gathering information related to UEs attached to said first MME, wherein the step of gathering information is triggered by the detection of said failure,restoring at least parts of said first context information at one or several of said neighboring MME using the gathered information, andre-establishing network internal logical connections with said one or several of said neighboring MME using the restored first context information.
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Abstract
Method for handling failure of a MME (Mobility Management Entity) in a Long Term Evolution/Evolved Packet Core network or an Evolved Packet System, wherein multiple UEs (User Equipment) are attached to a first MME, which stores first context information representing the UEs attached to the first MME, the UEs are connected to one of multiple eNBs (evolved NodeB), the eNB may communicate with the first MME and with at least one neighboring MME, and the UEs may communicate with the first MME and with the at least one neighboring MME via the eNB, includes: detecting failure of the first MME, gathering information related to UEs attached to the first MME, restoring parts of the first context information at one or several of the neighboring MME using the gathered information, and re-establishing network internal logical connections with the one or several of the neighboring MME using the restored first context information.
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Citations
19 Claims
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1. Method for handling failure of a MME (Mobility Management Entity) in a LTE/EPC (Long Term Evolution/Evolved Packet Core) network or an EPS (Evolved Packet System),
wherein multiple UEs (User Equipment) are attached to a first MME, wherein said first MME stores first context information representing the UEs attached to said first MME, wherein said UEs are connected to one of multiple eNBs (evolved NodeB), wherein said eNB may communicate with said first MME and with at least one neighboring MME, and wherein said UEs may communicate with said first MME and with said at least one neighboring MME via said eNB, characterized by the steps of detecting failure of said first MME, gathering information related to UEs attached to said first MME, wherein the step of gathering information is triggered by the detection of said failure, restoring at least parts of said first context information at one or several of said neighboring MME using the gathered information, and re-establishing network internal logical connections with said one or several of said neighboring MME using the restored first context information.
Specification