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srsran / srsRAN_4G

Open source SDR 4G software suite from Software Radio Systems (SRS) https://docs.srsran.com/projects/4g
https://www.srsran.com
GNU Affero General Public License v3.0
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srsenb: ue will disconnect in a few minutes after connecting to the srsenb #95

Closed eric80s closed 6 years ago

eric80s commented 6 years ago

We have added custom hardware rf_xxx_imp.c to srsLTE and tested our SDR hardware with SRSENB; The current test environment is Amarisoft EPC <---> SRSENB <----> UE; During the test, we found that the UE would disconnect in about a few minutes after connecting to the SRSENB, and filtering out a lot of warning information in ENB. Log, for example: 20:57:26.508541 [MAC ] Warning [03861] SCHED: discarting TB pid=5, tti=3861, maximum number of retx exceeded (4) 20:57:56.705789 [RRC ] Warning User rnti=0x46 expired Activity deadline: 30:8565>30:0 us

Can anyone give advice on how to solve this issue? thanks

dongxusb commented 6 years ago

Hello,chaoeric! you solved the problem? Recently i am making a test like you , my test environment is OAI EPC <---> SRSENB <----> SRSUE. During the test,i met the same problem like you , SRSUE would disconnect in about a few minutes after connecting to the SRSENB, in the terminal of the computer where SRSUE was installed will appear a lot of "L" and "sync error" ,at the same time in the terminal of the computer where SRSENB was installed will give a advice "failed to connect to MME and make a try in 10 seconds".Can you give me some advise on this problem? thanks a lot.