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Saturday, December 15, 2012

UMTS Handover event 2a, 2b, 2c, 2d, 2e, 2f explained

  • Event 2a: Change of Best Frequency.
  • Event 2b: The estimated quality of the currently used frequency is below a certain threshold and the estimated quality of a non-used frequency is above a certain threshold.
  • Event 2c: The estimated quality of a non-used frequency is above a certain threshold.
  • Event 2d: The estimated quality of the currently used frequency is below a certain threshold.
  • Event 2e: The estimated quality of a non-used frequency is below a certain threshold.
  • Event 2f: The estimated quality of the currently used frequency is above a certain threshold.

12 comments:

  1. can u plz elaborate these events.....

    ReplyDelete
    Replies
    1. I did not notice this comment. I will write one more article covering in detail. However please let me know if you have specific questions

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  2. I did not notice this comment. I will write one more article covering in detail. However please let me know if you have specific questions

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  3. Hi can you please elaborate the event 2f a little bit more. I want to know what action a UMTS UTRAN will take on receiving event 2f from UE. My concern is regarding handover.
    Thanks in advance :)

    ReplyDelete
    Replies
    1. When an event 2F received from the UE, NodeB will stop scanning and exit the compressed mode. In other words, when event 2F is received, UE is returning to good coverage area and stops measurement reporting in compressed mode. Please let me know if you have any more questions

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    2. tuning to different freq by creating some transmission gaps on current freq.

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  4. Hi! can you explain more about event 2b. Actually it is not clear for me.

    ReplyDelete
    Replies
    1. Please look into :
      http://www.kmshetty.com/2014/02/inter-frequency-hard-handover-events-in.html
      If this is not clear to you then please let me know.

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  5. can any one tell me the trigger time of 2D and 3A

    ReplyDelete
    Replies
    1. http://www.kmshetty.com/2014/02/inter-frequency-hard-handover-events-in.html
      Can this help. If not will write another article.

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