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Implementation of NR_RRCReestablishment procedures

Luis Pereira requested to merge NR_SA_release_reestablishment_paging into develop

Implementation of NR_RRCReestablishment procedures based on a first contribution by Fujitsu.

Following fixes and improvements:

  • Rebased on develop
  • Get NR_RRCReestablishment procedures to be 3GPP standard compliant at gNB
  • NR_RRCReestablishment tested and working with COTS UE
  • Trigger NR_RRCReconfiguration to reconfigure UE after NR_RRCReestablishment
  • Handle required BWP switching procedures related to NR_RRCReestablishment

User plane still works, with COTS UE, after NR_RRCReestablishment procedures as shown in the ping logs below:

Reply from 192.168.70.135: bytes=32 time=12ms TTL=63
Reply from 192.168.70.135: bytes=32 time=17ms TTL=63
Reply from 192.168.70.135: bytes=32 time=18ms TTL=63
Reply from 192.168.70.135: bytes=32 time=18ms TTL=63
Reply from 192.168.70.135: bytes=32 time=18ms TTL=63
Reply from 192.168.70.135: bytes=32 time=10ms TTL=63
Reply from 192.168.70.135: bytes=32 time=2126ms TTL=63   -> NR_RRCReestablishment procedures
Reply from 192.168.70.135: bytes=32 time=15ms TTL=63
Reply from 192.168.70.135: bytes=32 time=10ms TTL=63
Reply from 192.168.70.135: bytes=32 time=19ms TTL=63
Reply from 192.168.70.135: bytes=32 time=10ms TTL=63
Reply from 192.168.70.135: bytes=32 time=15ms TTL=63
Edited by Luis Pereira

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