LTEMTRF功能驗證

1、LTE-MTRF功能驗證一概述MTRF，移動終端漫游的目的轉(zhuǎn)發(fā)功能，是解決LTE覆蓋跨POOL邊界的語音回落問題，避免由于跨POOL邊界地區(qū)而導致的CSFB失??；為此我們對MSCPOOL邊界的MTRF功能進行驗證測試；MTRF，需要對現(xiàn)網(wǎng)的LTE網(wǎng)絡以及GSM網(wǎng)絡進行改造升級，如下：1. 在LTE覆蓋區(qū)域內(nèi)，升級MSC支持SGs接口為SGs MSC；2. 升級LTE網(wǎng)絡覆蓋區(qū)的SGs MSC和相鄰POOL內(nèi)所有的MSC均支持MTRF；3. 配置MME的SGs接口，并連接所有POOL的SGs MSC；4. 配置MME覆蓋范圍內(nèi)TA-LA-MSC的映射關(guān)系；二測試準備1）筆記本電腦一臺；2）D2及

2、任意UE終端；3）GENEX Probe 3.6軟件；4）MSC POOL邊界測試區(qū)域；本次MTRF功能驗證，選擇LTE覆蓋區(qū)域的MSC POOL 1 與MSC POOL 3 邊界，注：MSC POOL 1為中興的LTE-MME，MSC POOL 3為華為LTE-MME，如下圖所示：三功能驗證3.1 測試場景一(POOL1 -> POOL3)驗證目標：MSC POOL 1 中LTE服務小區(qū)成功回落至MSC POOL 3 中GSM小區(qū)；3.1.1 測試小區(qū)信息及數(shù)據(jù)配置1） LTE服務小區(qū)-雙港供熱站-HLH135487_2（ENODEBID：135487，TAC：8644，PCI：463

3、）；歸屬POOL 1；CellnameENODEBIDPCITACDIRMSCPOOL雙港供熱站-HLH135487_2135487463864418012） GSM小區(qū)-白塘口村信源雙港開發(fā)區(qū)4_664975-HGH-1（CI：49751，LAC：8532，BCCH：38）；歸屬POOL 3；CellnameCIBCCHLACDIRMSCPOOL白塘口村信源雙港開發(fā)區(qū)4_664975-HGH-1497513885325533）配置添加LTE小區(qū)(135487-2) -> GSM小區(qū)(49751)的38號頻點及鄰區(qū)關(guān)系；測試小區(qū)回落示意圖如下：3.1.2 測試回落空口信令解析CSFB完整

4、空口信令流程，Extern Service Request->Alerting，如下：3.1.2.1 占用的LTE服務小區(qū)(POOL1)1）SystemInformationBlockType12）rrcConnectionReconfiguration3.1.2.2 被叫請求的業(yè)務服務類型ExtendedServiceRequest3.1.2.3 LTE-GSM位置更新(POOL1->POOL3) 3.1.2.4 回落后的GSM小區(qū)(POOL3)1）System-information-type-62）rrcConnectionRelease：回落GSM之前，在被叫接收到尋呼時刻

5、之后進行的rrc連接釋放信令中上報了目標GSM小區(qū)的38號頻點，如下：3.1.2.5 LTE CSFB ServiceSuc振鈴Alerting3.1.3 測試驗證結(jié)果反饋本場景POOL 1-> POOL 3 跨POOL 的CSFB業(yè)務合計撥打30次，全部成功回落，MTRF功能驗證成功，另Extern Service Request->Alerting的平均時延僅為6S左右，相對LTE覆蓋區(qū)域內(nèi)的MSC POOL內(nèi)的CSFB時延更快，用戶感知更佳。MTRF功能驗證表如下：Extern Service RequestAlerting站點添加頻點時延被叫4G小區(qū)（ENODEBID-PC

6、I）被叫2G頻點（CI-BCCH）15:49:52.038 15:49:59.319 32,49,34,48,512,38,460:00:07.281135487-46349751-3815:50:17.637 15:50:23.891 32,49,34,48,512,38,460:00:06.254135487-46349751-3815:50:35.557 15:50:41.923 32,49,34,48,512,38,460:00:06.366135487-46349751-3815:50:54.756 15:51:01.007 32,49,34,48,512,38,460:00:06.

7、251135487-46349751-3815:51:15.235 15:51:22.029 32,49,34,48,512,38,460:00:06.794135487-46349751-3815:51:39.555 15:51:46.689 32,49,34,48,512,38,460:00:07.134135487-46349751-3815:52:10.274 15:52:16.129 32,49,34,48,512,38,460:00:05.855135487-46349751-3815:52:26.913 15:52:33.039 32,49,34,48,512,38,460:00

8、:06.126135487-46349751-3815:52:47.392 15:52:53.808 32,49,34,48,512,38,460:00:06.416135487-46349751-3815:53:16.831 15:53:22.741 32,49,34,48,512,38,460:00:05.910135487-46349751-3816:03:42.337 16:03:48.716 32,49,34,48,512,38,460:00:06.379135487-46349751-3816:04:20.813 16:04:26.450 32,49,34,48,512,38,46

9、0:00:05.637135487-46349751-3816:04:46.863 16:04:52.738 32,49,34,48,512,38,460:00:05.785135487-46349751-3816:05:16.302 16:05:22.686 32,49,34,48,512,38,460:00:06.384135487-46349751-3816:05:41.901 16:05:48.084 32,49,34,48,512,38,460:00:06.183135487-46349751-3816:06:02.380 16:06:08.590 32,49,34,48,512,3

10、8,460:00:06.210135487-46349751-3816:06:22.531 16:06:28.536 32,49,34,48,512,38,460:00:06.005135487-46349751-3816:06:43.338 16:06:49.540 32,49,34,48,512,38,460:00:06.202135487-46349751-3816:07:03.817 16:07:10.073 32,49,34,48,512,38,460:00:06.256135487-46349751-3816:07:26.857 16:07:33.735 32,49,34,48,5

11、12,38,460:00:06.878135487-46349751-3816:07:47.336 16:07:54.208 32,49,34,48,512,38,460:00:06.872135487-46349751-3816:08:05.255 16:08:10.707 32,49,34,48,512,38,460:00:05.452135487-46349751-3816:08:20.614 16:08:27.982 32,49,34,48,512,38,460:00:07.368135487-46349751-3816:08:38.534 16:08:44.223 32,49,34,

12、48,512,38,460:00:05.689135487-46349751-3816:08:56.453 16:09:03.931 32,49,34,48,512,38,460:00:07.487135487-46349751-383.2 測試場景二(POOL3 -> POOL1)驗證目標：MSC POOL 3 中LTE服務小區(qū)成功回落至MSC POOL 1 中GSM小區(qū)；3.2.1 測試小區(qū)信息及數(shù)據(jù)配置1）LTE服務小區(qū)-雙港新家園3信源景荔路與領(lǐng)世路交口-HLH135491_1（ENODEBID：135491，TAC：8532，PCI：186）；歸屬POOL 3；Cellname

13、ENODEBIDPCITACDIRMSCPOOL雙港新家園3信源景荔路與領(lǐng)世路交口-HLH135491_113549118685326032）GSM小區(qū)-景蓉路與新家園路交口_12623646-2（CI：36468，LAC：8644，BCCH：55）；歸屬POOL 1；CellnameCIBCCHLACDIRMSCPOOL景蓉路與新家園路交口_12623646-23646855864418013）配置添加LTE小區(qū)(135491-1) -> GSM小區(qū)(36468)的55號頻點及鄰區(qū)關(guān)系；測試小區(qū)回落示意圖如下：3.2.2 測試回落空口信令解析CSFB完整空口信令流程，Extern Se

14、rvice Request->Alerting，如下：3.2.2.1 占用的LTE服務小區(qū)(POOL3)1）SystemInformationBlockType12）rrcConnectionReconfiguration3.2.2.2 被叫請求的業(yè)務服務類型ExtendedServiceRequest3.2.2.3 LTE-GSM位置更新(POOL3->POOL1) 3.2.2.4 回落后的GSM小區(qū)(POOL1)1）System-information-type-62）rrcConnectionRelease：回落GSM之前，在被叫接收到尋呼時刻之后進行的rrc連接釋放信令中上

15、報了目標GSM小區(qū)的55號頻點；注：為保證該場景下的業(yè)務驗證質(zhì)量，刪除本POOL內(nèi)（POOL3）的所有GSM頻點，只添加跨POOL（POOL1）的55號頻點；3.2.2.5 LTE CSFB ServiceSuc振鈴Alerting3.2.3 測試驗證結(jié)果反饋本場景POOL 3-> POOL 1 跨POOL 的CSFB業(yè)務合計撥打30次，亦全部成功回落，MTRF功能驗證成功，另Extern Service Request->Alerting的平均時延亦為6S左右，相對LTE覆蓋區(qū)域內(nèi)的MSC POOL內(nèi)的CSFB時延較短，體驗相對POOL內(nèi)更好。MTRF功能驗證表如下：Extern

16、 Service RequestAlerting站點添加頻點時延被叫4G小區(qū)（ENODEBID-PCI）被叫2G頻點（CI-BCCH）10:39:50.889 10:39:57.670 550:00:06.781135491-18636468-5510:40:12.648 10:40:20.600 550:00:07.952135491-18636468-5510:40:30.568 10:40:37.089 550:00:06.512135491-18636468-5510:40:48.487 10:40:54.649 550:00:06.162135491-18636468-5510:41

17、:03.846 10:41:09.552 550:00:05.706135491-18636468-5510:41:24.325 10:41:30.209 550:00:05.884135491-18636468-5510:41:44.804 10:41:50.650 550:00:05.846135491-18636468-5510:42:01.443 10:42:07.472 550:00:06.029135491-18636468-5510:42:16.802 10:42:24.632 550:00:07.830135491-18636468-5510:42:34.721 10:42:4

18、4.661 550:00:09.940135491-18636468-5510:42:50.080 10:42:56.337 550:00:06.257135491-18636468-5510:43:04.160 10:43:09.610 550:00:05.450135491-18636468-5510:43:19.519 10:43:25.486 550:00:05.967135491-18636468-5510:43:34.878 10:43:41.980 550:00:07.102135491-18636468-5510:43:50.237 10:43:56.684 550:00:06.447135491-18636468-5510:44:05.596 10:44:11.619 550:00:06.023135491-18636468-5510:44