How do 5G wireless networks repair themselves?

1、Self-healing is the ability of a wireless network in a SON to automatically detect and localize most faults and apply self-healing mechanisms to resolve many types of faults; for example, reducing output power or automatically reverting to a previous software version in the event of a temperature fault.

2、All areas of the existing network may fail from time to time, and many of these failures can be overcome by self-healing without major problems and in many cases spare hardware can be used. Self-healing of wireless networks mainly involves the following areas:

• software self-recovery - the ability to revert to a previous version of software when a problem occurs.
• circuit failure self-healing - usually involves redundant circuits that can be switched over to spare circuits.
• unit interrupt detection-identifying problems by remotely inspecting a specific unit.
• unit outage recovery - routines to assist in unit recovery, which may include detection and diagnosis as well as automated recovery solutions and reporting of operational results.
• cell outage compensation - A method of providing optimal service to users during maintenance.

3、Fault Management and Self-Repair Wireless cells shall be able to easily return to a pre-failure state through self-repair, thus eliminating any compensation operations that may have been initiated; network fault management and correction requires significant human intervention, automated wherever possible; therefore, fault identification and self-repair is an important solution, and the following points are important components of the solution:

• Automatic Fault Recognition Equipment faults are usually detected automatically by the equipment itself. However, fault detection messages are not always generated or transmitted when the detection system itself is damaged. eNodeB Such unrecognized faults are often referred to as dormant cells, and they are detected through performance statistics.
• Cell Outage Compensation When a device failure is detected, the SON analyzes the device's internal logs to identify the root cause and takes some recovery actions, such as reverting to a previous software version or switching to a standby cell. When an equipment failure cannot be resolved by these measures, the affected and neighboring cells will take collaborative measures to minimize the quality degradation perceived by users. For example, in urban areas covered by multiple microcells, it is effective to relocate users from a faulty cell to a normal cell by collaboratively adjusting coverage and switching related parameters in nearby cells. This can shorten the fault recovery time and assign maintenance staff more efficiently.