閉鎖后將volte用戶平滑切出功能試點成果總結(jié)-撫州

1、LTE 914-閉鎖后將VoLTE用戶平滑切出功能試點總結(jié)諾基亞 15A版本功能原理原理介紹開啟LTE914 Graceful Cell Shutdown后，那么閉鎖小區(qū)時會逐步將本小區(qū)功率降低，期間連接態(tài)UE可以逐步切換到相鄰4G小區(qū)或發(fā)生eSRVCC到2G，空閑態(tài)UE重選出去，降低用戶掉話的風(fēng)險。參數(shù)：NameShort name簡單描述默認(rèn)值推薦值Enable graceful cell shutdownenableGrflShdngraceful cell shutdown功能總開關(guān)disabledenabledShutdown step amountshutdownStepAmoun

2、t功率衰減次數(shù)步長66Shutdown windowshutdownWindow功率衰減的時間窗長60s60sAdministrative stateadministrativeState小區(qū)狀態(tài)模式選擇unlockedshutting down每隔Shutdown window/ Shutdown step amount=60/6=10s 降低一次功率，一共調(diào)整6次，最終在60s+10s=70s之后將功率降至最低。適用場景所有場景。預(yù)期收益減少用戶掉話或掉線風(fēng)險。應(yīng)用風(fēng)險無。功能開通參數(shù)設(shè)置如下：NameShort name簡單描述默認(rèn)值推薦值Enable graceful cell shu

3、tdownenableGrflShdngraceful cell shutdown功能總開關(guān)disabledenabledShutdown step amountshutdownStepAmount功率衰減次數(shù)步長66Shutdown windowshutdownWindow功率衰減的時間窗長60s60sAdministrative stateadministrativeState小區(qū)狀態(tài)模式選擇unlockedshutting downBTS級參數(shù)設(shè)置：CELL級參數(shù)：試點情況1、試點場景場景1：“撫州宜居家園-NLH CI:511870-30，該路段為RSRP中點預(yù)期效果：511870-3

4、0shutdown后信號成呈階梯下降，降到滿足A3門限切往鄰小區(qū)。場景2：室分場景779059_18 撫州2021賓館-NLW-1預(yù)期效果：511870-30 shutdown后信號成呈階梯下降，降到滿足B2門限切往G網(wǎng)。試點情況選取站點：“撫州宜居家園-NLH CI:511870-30，該路段為RSRP中點。小區(qū)Shutdomn后，RSRP電平呈階梯下降，降到一定程度后，VOLTE用戶切出到鄰小區(qū)，業(yè)務(wù)接續(xù)未出現(xiàn)掉話，符合預(yù)期效果。選取室分弱場情景：779059_18 撫州2021賓館-NLW-1，啟LTE914 Graceful Cell Shutdown后，那么閉鎖小區(qū)時會逐步將本小區(qū)功

5、率降低，滿足B2門限，發(fā)生eSRVCC到2G 。3、測試與指標(biāo)比照511870-30開啟LTE914 Graceful Cell Shutdown后切往鄰小區(qū)779059_18開啟LTE914 Graceful Cell Shutdown后切往G網(wǎng)未出現(xiàn)掉話試點總結(jié)功能優(yōu)缺點閉鎖小區(qū)時通過使用graceful shutdown可以改善語音/視頻用戶掉話風(fēng)險，提升用戶感知。建議應(yīng)用場景所有場景。建議參數(shù)門限參數(shù)設(shè)置推薦：NameShort name簡單描述默認(rèn)值推薦值Enable graceful cell shutdownenableGrflShdngraceful cell shutdown功能總開關(guān)disabledenabledShutdown step amountshutdownStepAmount功率衰減次數(shù)步長66Shutdown windowshutdownWindo