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Core network backup method applied to TD-LTE (Time Division Long Term Evolution) Internet-of-Things service isolation environment

A business isolation and Internet of Things technology, applied in the field of core network backup, can solve problems such as network impact, low cost, and ARP information loss, and achieve the effects of reducing switching time, avoiding pairing confusion, and reducing complexity

Inactive Publication Date: 2018-06-26
POTEVIO INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method depends on the performance of the switch. When the number of UEs increases to a large amount of data, the switch is not capable of processing ARP, which may lead to loss of ARP information and packet loss in data transmission.
[0012] 3. Dual-service hot backup method: Compared with the first method, the cost of this method is lower, and compared with the second method, it can also solve the problem of downlink data routing, but because it uses the MAC layer broadcast method, it may affect the The impact caused by the network cannot meet the application scenarios of multiple sets of mutual backup EPC systems
And because it only appears as one EPC to the outside world, it is impossible to manage a single machine

Method used

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  • Core network backup method applied to TD-LTE (Time Division Long Term Evolution) Internet-of-Things service isolation environment
  • Core network backup method applied to TD-LTE (Time Division Long Term Evolution) Internet-of-Things service isolation environment
  • Core network backup method applied to TD-LTE (Time Division Long Term Evolution) Internet-of-Things service isolation environment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0095] This embodiment describes the processing flow of the EPC failing to receive heartbeat messages from the peer for N consecutive times. The schematic diagram of the flow is as follows Figure 5 shown, including the following steps:

[0096] Step 1: EPC periodically sends a heartbeat message to the mutual backup peer;

[0097] Step 2: If the EPC fails to receive the heartbeat message from the peer for N consecutive times, check whether the network status of the machine is normal;

[0098] Step 3: If the network status of the local end is normal, the local end enters the state of HB_Host, that is, performs the work of the main server and provides external services;

[0099] Step 4: If the network status of the local end is abnormal, the local end enters or maintains the HB_Standby state, works as a standby server, and does not provide external services.

Embodiment 2

[0101] This embodiment describes the processing flow of receiving the heartbeat message from the peer end when the heartbeat states of the mutually standby EPCs are all non-HB_Host. A schematic diagram of the process is Image 6 As shown, the network status of both parties is OK, and the level of EPC-A is higher than that of EPC-B. Image 6 The process shown includes:

[0102] For EPC-A:

[0103] Step A-1: ​​EPC-A in the HB_Initial state receives a heartbeat message from the peer EPC-B of mutual backup, and EPC-A compares the information in the heartbeat message with the information of the local end.

[0104] like Image 6 As shown, the heartbeat message contains at least three pieces of information: local heartbeat status, local network status, and local level. Among them, "0" is used for the heartbeat status of the local end to indicate the non-HB_Host status, and "1" is used to indicate the HB_Host status; "0" is used for the local network status to indicate BAD, and "1...

Embodiment 3

[0110] This embodiment describes the processing flow of receiving the heartbeat message from the peer end when the heartbeat states of the mutually standby EPCs are all non-HB_Host. A schematic diagram of the process is Figure 7 As shown, the network status of EPC-A is BAD, Figure 7 The process shown includes:

[0111] For EPC-A:

[0112]Step A-1: ​​EPC-A in the HB_Initial state sends a heartbeat message to the mutually standby peer EPC-B, carrying the information that its own network status is BAD, that is, setting the field corresponding to the network status in the heartbeat message to 0;

[0113] Step A-2: EPC-A's own network status is BAD and cannot provide services, so it enters the HB_Standby status.

[0114] For EPC-B:

[0115] Step B-1: EPC-B in the HB_Standby state receives the heartbeat message sent by the peer EPC-A of mutual backup, and EPC-B compares the information in the heartbeat message with the information of the local end;

[0116] Step B-2: EPC-B fi...

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Abstract

The present invention discloses a core network backup method applied to a TD-LTE (Time Division Long Term Evolution) Internet-of-Things service isolation environment. The method includes the followingsteps that: two evolved packet core networks (EPCs) that are mutually backup for each other are configured, the configurations of application interfaces in the configurations of the two EPCs are identical, and the configurations of the operation, administration and maintenance (OAM) interfaces in the configurations of the two EPCs are different; the two EPCs obtain each other' s heartbeat statesand network states and levels through point-to-point heartbeat messages, and one of the two EPCs is determined as a main EPC according to the obtained information, and the other EPC is determined as abackup EPC according to the obtained information; and the main EPC provides external application interfaces and services. With the core network backup method of the invention adopted, low-complexity,low-cost, and short-switching time EPC backup can be realized.

Description

technical field [0001] The present application relates to the field of communication technology, and in particular to a core network backup method applied to a TD-LTE Internet of Things service isolation environment. Background technique [0002] The network architecture of Time Division Long Term Evolution (TD-LTE) wireless communication system mainly includes User Equipment (UE), Evolved Universal Terrestrial Radio Access Network (Evolved Universal Terrestrial Radio Access Network, E-UTRAN), Evolved Packet Core Network (Evolved Packet Core, EPC). The E-UTRAN is composed of a base station (Evolved NodeB, eNodeB), and the eNodeB performs signaling and user plane data interaction with the UE through the air interface. EPC is externally presented as three application interfaces, S1-MME interface is the signaling interface between EPC and eNodeB, S1-U interface is the user plane interface between EPC and eNodeB, and SGi is the interface between EPC and Packet Data Network (PDN...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04L12/26H04L29/08
CPCH04L41/0823H04L43/10H04L67/12
Inventor 林芃郝宇博张宝山
Owner POTEVIO INFORMATION TECH CO LTD