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How to improve Hand Over Success Rate

Updated on March 14, 2010
How to improve HOSR
How to improve HOSR

It is very important to maintain correct neighbour plan and do the basics. If you do not follow the basics of neighbour planning, it is very limited to possibilities to improve HOSR by using parameters. Edge, Layer, PBGT, Quality or Load sharing handovers will not work properly if we do not have correct neighbour plan. Therefore we must work on HO basics as the first step to improve HOSR.

1). Define correct neighbours

Still it is found many neighbour relations are missing even co-located neighbours. Initially we can find missing neighbours by using Nastar. After that we should work on tools available in BSCs which give you real HO requirements in the field (Undefined Adjacent Cell Measurements in BSC32 and Neighbour Cell Optimization tool in BSC6000, unfortunately still we are not able to use these tools available with the BSC6000 & M2000).

2). Method of removing neighbours

Based on HO statistics, this is the best and only method that I suggest to remove neighbours. We can remove HO relations which have fewer no of HOs and cells having poor HOSR, but it depends on the importance of the neighbour to avoid call drops). Further Nastar is not a good tool to remove neighbours.

3). Same BCCH & BSIC combinations

Avoid same BCCH+BSIC combination is very important to improve HOSR. In this case it is better to keep maximum possible distance between same BCCH+BSIC combinations. I recommend keeping 6km distance in urban area. Again this checking should be done periodically since many new sites become on-air time to time.

4). External neighbour parameters

This is very important since there are many BSC borders in the City area. Many hand over improvement can be achieved in the city area by improving inter BSC HOSR. This external neighbour parameter checking has to be done periodically.

4). Frequency plan

Co-channel interference degrades HOSR. Proper neighbour relations will increase HOSR while improving all other KPIs such as CDR, Congestion and CSSR. I expect your support to improve HOSR by following above steps.


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How to improve Hand Over Success Rate

It is very important to maintain correct neighbour plan and do the basics. If you do not follow the basics of neighbour planning, it is very limited to possibilities to improve HOSR by using parameters. Edge,...


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    • profile image

      Amos 6 years ago

      Big up akmyamuna... I'm learning while trying to set up a Cellular Network Planning & Opimization basics hub for discussing general concepts in simpler terms for fans who need the general idea. All are welcome to comment in order to add value to it.

    • amonene profile image

      amonene 6 years ago from Arusha, TANZANIA

      See you all around

    • profile image

      pukornov ishadi 7 years ago

      akmyamuna could you explain others paramater how to improve HOSR and CSSR (call setup succcess rate)?

      thank you..

    • profile image

      naveen 7 years ago

      hi dear,

      can u plz provide me material of rf and optical training in communication field.

    • profile image

      Harry 7 years ago

      For more in formation


    • profile image

      Oyebanji Olusanya 7 years ago

      Nice site to develop one's skill but I still need an article on power budget adjustment for BS and MS to control DL and UL interference.

    • profile image

      Mayakrishnan 7 years ago

      Hi Akmyamuna,

      Can you explain about Assignment Failure Rate? Here Assignment means Assignment of either SDCCH or TCH? Also how to overcome this?

    • profile image

      Ann 7 years ago

      Hi Akmyamuna,

      How can I improve 2G to 3G handover success rate? any clues.

      Thanks in advance.

    • profile image

      Shivanshu 7 years ago

      Hi akmyamuna

      PLease in many of my BSC cell better cell handover failure is very high,please suggest ?

    • akmyamuna profile image

      akmyamuna 7 years ago

      Dear Wajid: watch time and valid time parameters are to avoid pin pong HOs and avoid unnecessary HOs. Read this article to get a good understanding about watch time and valid time.

    • akmyamuna profile image

      akmyamuna 7 years ago

      Dear alessandro: Herewith I explained how to improve HOSR. Main thing in HOSR is keep the neighbour plan accurately. If you do not have a correct neighbour plan you cannot improve HOSR anyhow.

    • profile image

      Wajid Khan 7 years ago

      Hi akmyamuna,

      Can you please elaborate the optimization level using soft parameters like the threshold and hysteresis values we need to define to avoid HO problems.

      Eg- for Load HO one should have the utilization rate >70% and what should be the watch and valid time for LOAD HO.


      Wajid Khan

    • alessandro naspa profile image

      alessandro naspa 7 years ago

      hi akmyamuna

      can u explain in more detail about improve HOSR with me ?

      many thanks for ur explanation

    • akmyamuna profile image

      akmyamuna 8 years ago

      Hi Teresa, thanks for your comment. Yes, professionally Im a Mobile Telecom engineer. I thought to share some training material prepared by me for junior engineers. Really sorry, if it is not interested. You can go through my other hubs.

    • Teresa Laurente profile image

      Maria Teresa Rodriguez - Laurente 8 years ago from San Antonio, Texas, U.S.A.

      This is high tech. I wish I have the patience to really learn more about really advanced tech. More power and thanks for the sharing.