Generic selectors
Exact matches only
Search in title
Search in content
Post Type Selectors

tch blocking and tch congestion

Viewing 15 posts - 76 through 90 (of 99 total)
1 2 3 … 5 6 7
  • Author
    Posts
  • 2nd September 2009 at 07:18 #52099
    Bijoy
    Guest

    Definitely not

    2nd September 2009 at 09:35 #52100
    KRISH
    Guest

    hi,

    U MEAN WILL NOT IMPROVE SD BLOCKING.

    2nd September 2009 at 10:39 #52101
    Gerald Thomas
    Guest

    Please can someone help me:

    1. i don’t where i can find the RACH time

    2. where i can the lapd from 16 to 32k

    my equipment is ZTE

    2nd September 2009 at 10:43 #52102
    Gerald Thomas
    Guest

    Also, the site has three sectors but only sector_2 is having low Total Number of SDCCH Attempts and extremely low Number of Successful SDCCH Assignment and these affect the Accessibility to SDCCH.

    Please can someone help!

    3rd September 2009 at 09:11 #52103
    Bijoy
    Guest

    Hi Krish.
    SDCCH Blocking due to LOC update cannot be minimised by LAPD multiplexing change

    3rd September 2009 at 13:22 #52104
    gerald thomas
    Guest

    hi Bijoy,

    In ZTE, we have Minimal Signal Strenght of MS Uplink RACH Access (RachMin, -dm)and RACH Load Indication Threshold, there values are 125 and 60 respectively.

    what is your suggestion?

    4th September 2009 at 08:37 #52105
    Bijoy
    Guest

    Hi Gerald
    Minimal Signal Strenght of MS Uplink RACH Access should be around -109 dBm

    RACH Load Indication Threshold should be 80%

    4th September 2009 at 09:37 #52106
    krish
    Guest

    hi bijoy

    But here i am getting 2 % in sd blocking imrovement after lapd from 32 to 64 which is due to lac update.

    If ur point of view its not possible can u explain why its not possible in lac update?

    5th September 2009 at 12:53 #52107
    Bijoy
    Guest

    Hi Krish
    2% improvement is not a conclusive improvement.
    since SDCCH Holding Time during LOC update is high,increasing LAPd from 16K to 32K will not help much.
    If u really want to bring down the SDCCH Blocking due to LOC update,change its LAC,u will observe very good results

    5th September 2009 at 13:10 #52108
    gerald thomas
    Guest

    hi Bijoy,

    i will make the changes and observed

    18th September 2009 at 14:22 #52109
    gerald thomas
    Guest

    Hi Bijoy,

    we have made the changes but the situation is still the same.

    so do you have anymore suggestion?

    19th September 2009 at 07:01 #52110
    Bijoy
    Guest

    If your problem was due to LOC update,changing the LAC of that cell as that of its neighboring cells should have helped.Carrier addition & SDCCH addition is the last resort then.
    U can also increase the T3212 timer to 4-6 hours(if not already done).but this might lead to poor PSR

    21st October 2009 at 06:35 #52111
    Seles83
    Guest

    What are causes of high TCH Blocking on same cells. How do i cap the trend…my vendor is ericsson.

    24th October 2009 at 13:59 #52112
    jairohila
    Guest

    i m working in bsnl project plz help me for improve tch drop.there is tch drop on site around 7 to 14%.plz suggest me wht i do 2 improve it.

    thanx

    24th October 2009 at 16:18 #52113
    krish
    Guest

    hi seles,

    is there dual band?

  • Author
    Posts
Viewing 15 posts - 76 through 90 (of 99 total)
1 2 3 … 5 6 7
  • The forum ‘Telecom Design’ is closed to new topics and replies.