25502F писал(а):А Самара-Билайн в курсе?!
В таком случае "чудовищным" является не CRO, а Access Min. Ибо только при нереальных ACCMIN С1 будет оставаться положительным, "не оставляя надежд" соседям.
А что еще выкуралесивают в dedicated...
Кста, у нас в Питере Бишки то ж такой ерундой страдают. Просто деятели с дифицитом номиналов GSM ими разбрасываются, а упомянутые параметры прописываются по частотному признаку, а не по функциональному.
Песня та же, что и в соседней теме.
i know most of you are Russian native speaker but i am not! :S so can we post in English when possible?
would increasing the CRO value affects the number of roamers ? i mean would a network with high CRO values (lets says 10 or 20) on 900 band get more roamers that other networks?
what did you mean when you said "If the CRO is big – the mobile phone cannot choose the correct neighbour" ?why is that?
do you think high CRO values might produce longer re-selection time in the idle mode?
Samara-Mobile.ru писал(а):
Давай представим себя на месте абонента. Допустим, он движется по улице, его сервирует DCS-сектор. Вокру - полно GSM-соседей с ГОРАЗДО лучшим радиосигналом. Радиосигнал же DCS-сектора слабеет, слабеет, слабеет... и телефон теряет сеть (если в соседях нет других DCS-секторов). Телефон начинает процедуру НетворкРегистрейшин, находит GSM-сектора и регистрируется в одном из них. Зашибись?
пардон, не учел
согласен что в таком случае действительно великовато ... просто потом с драйв тестом ездил ... и выходило так что С1 900 превышал С2 1800 вот и оно переключалось нормально ... но я согласен что описанная тобой ситуация становится вероятнее
спасибо
The network with high CRO values on 900 band can not get more roamers that other networks, becouse all roamers choice consist only from level of recieve signal. Big signal - more number roamers. But the idea about it is intresting.
"what did you mean when you said "If the CRO is big – the mobile phone cannot choose the correct neighbour" ?why is that?" it was wrote by Russian. If intresting - write me.
do you think high CRO values might produce longer re-selection time in the idle mode? Only if we have problem on sdcch channal. I think it is not a problem to select the correct CRO.
My English is intermediate. If it is not big problem - write me private letter.
thanks for your reply! hope we will share some knowledge together!
regarding the roamers; i know that -85 dBm RxLev and above is the main driver for roamers; ie; a mobile, when first switched on and cant find home network will scan all BCCHs from all frequency bands (lets say we are dealing with 2G only) and select randomly any BCCH that exceeds -85 criterion, please correct me if i am wrong.
now, regarding CRO and Roaming; imagine a roamer with another network and his Rxlev drops below -85 dBm; wouldn't his mobile try to reselect another BCCH ? regardless of the network. so increasing your C2 will increase the chances that roamers select your network.
regarding CRO and slow idle mode reselection, for normal home users.. you said only if we have problems on the SDCCH channel, what kind of problem you mean?
Regarding the roamers the first predicate is right.
Regarding CRO and Roaming there is one factor are being. Only after that mobile try to reselect BCCH and registration was successful, the mobile phone will recieve BA1 list (neighbours), CRO and others. Becouse these parametrs need only in the passive regime. So increasing your C2 WILL NOT increase the chances that roamers select your network, but idea is intresting. I will think about how we can increase the number of roamers.
There are many problems on the SDCCH - from disballance Uplink-Downlink to traffik overload. In each case the each solving of the problems.
