Cross-core network LTE disaster recovery method and system
A technology of core network and core network equipment, which is applied in the field of communication, can solve problems such as failure to perform disaster recovery, achieve high usability and realizability, and avoid long-term business interruption
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Embodiment 1
[0068] Please refer to image 3 , Embodiment 1 of the present invention is: a cross-core network LTE disaster recovery method, the method is based on the S1-flex function of the base station (the base station can simultaneously establish SCTP / S1 connection), including the following steps:
[0069] S1: At least two core network devices establish detection links with each other; that is, among more than two core network devices, each core network device establishes detection links with other core network devices.
[0070] S2: Exchanging the keep-alive message through the detection link; further, exchanging the keep-alive message through the TCP protocol, and the data field of the message is filled with a self-defined message, which is used to detect the working status of the peer core network device. For example, the message data fields are defined as follows:
[0071]
[0072] Among them, message type indicates the link detection message type, the length is four bytes, and...
Embodiment 2
[0089] This embodiment is a specific application scenario of Embodiment 1.
[0090] This embodiment takes three sets of core network equipment as an example, which are respectively the first core network equipment EPC1, the second core network equipment EPC2 and the third core network equipment EPC3, and the three sets of core network equipment have established detection links among each other; 100 base stations are connected to the first core network device EPC1, numbered 1-100 respectively; 200 base stations are connected to the second core network device EPC2, numbered 101-300 respectively; 300 base stations are connected to the third core network device EPC3 The base stations are numbered 301-600 respectively. Core network devices will notify other core network devices of the number of base stations they have connected to through the detection link.
[0091] Assuming that the first core network device EPC1 is abnormal, and the third core network device EPC3 finds that the...
Embodiment 3
[0093] Please refer to Image 6 , this embodiment is a cross-core network LTE disaster recovery system corresponding to the above-mentioned embodiments, including:
[0094] The first establishment module 1 is used to establish detection links between at least two core network devices;
[0095] Configuration module 2, configured to correspond to each core network device to configure a set of identifiers that are allowed to access the base station;
[0096] The selection module 3 is configured to select a core network device with a normal state among the remaining core network devices to respond to the corresponding base station in the identifier set of the core network device if it is determined that the state of a core network device is abnormal according to the detected link. S1 connection request.
[0097] Further, it also includes:
[0098] The sending module 4 is used for the base station to continuously send the S1 connection request including the base station identifi...
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