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一、4G(LTE)網絡SIB5消息 4G(LTE)無線網絡的SIB5(SystemInformationBlockType5)消息中包含著終端進行異頻小區重選鄰小區相關信息，即有關相鄰異頻鄰區E-UTRA的頻率信息。 SIB5消息中包括鄰區列表的信息有：載波頻率、小區重選優先級、UE在重選高于/低于當前服務頻率的優先級頻率時使用的閾值等。另外SIB5消息中還包含一個列入黑名單的異頻鄰區列表。 二、SIB5消息承載、方向及傳輸
三、SIB5消息發送場景 在4G(LTE)網絡中SIB5消息根據其在SIB1中的映射和調度，周期性地發送。 四、SIB5消息實例解析 RRC-MSG ..msg 0> 06 00000110 T ....struBCCH-DL-SCH-Message 1> ............systemInformation ..............criticalExtensions ................systemInformation-r8 ..................sib-TypeAndInfo 2> 0 -00011--...................sib5 .....interFreqCarrierFreqList(頻間載波頻率列表） 3> ......InterFreqCarrierFreqInfo(異頻載波頻率信息） 6> .......dl-CarrierFreq:0x9826 (38950)（下行載波頻點:38950） ..............q-RxLevMin:-0x3d (-61)（小區最小接收電平:-61*2=-122） 7> .............p-Max:0x17 (23)(終端最大功率:23dBm） ......t-ReselectionEUTRA:0x1 (1)（EUTRA小區重選定時器:1) 8> ....threshX-High:0x8 (8)（向更高優先級頻率重選時使用的門限:8） 9> threshX-Low:0xb (11)（向更低優先級頻率重選時使用的門限:11） .........allowedMeasBandwidth:mbw100 (5)(小區測量帶寬:20Mhz) --............presenceAntennaPort1:FALSE 10> AA .............cellReselectionPriority:0x7 (7)(小區重選優先級:7) -01............neighCellConfig:01(01)(鄰區配置:01) .........InterFreqCarrierFreqInfo(異頻載波頻率信息） 13> .......................dl-CarrierFreq:0x98ec (39148) --001001 ............................q-RxLevMin:-0x3d (-61) 14> D4 110101-- ............................p-Max:0x17 (23) 15> A1 1------- ............................t-ReselectionEUTRA:0x1 (1) -01000-- ............................threshX-High:0x8 (8) 16> 75 011----- ............................threshX-Low:0xb (11) ---101-- ............................allowedMeasBandwidth:mbw100 (5) ------0- ............................presenceAntennaPort1:FALSE 17> D5 11------ ............................cellReselectionPriority:0x7 (7) --01---- ............................neighCellConfig:01(01) ..........................InterFreqCarrierFreqInfo 20> 84 ............................dl-CarrierFreq:0x940c (37900) 21> EA 1------- ............................q-RxLevMin:-0x3d (-61) -110101- ............................p-Max:0x17 (23) 22> 50 01------ ............................t-ReselectionEUTRA:0x1 (1) --01000- ............................threshX-High:0x8 (8) 23> BA 1011---- ............................threshX-Low:0xb (11) ----101- ............................allowedMeasBandwidth:mbw100 (5) -------0 ............................presenceAntennaPort1:FALSE 24> CA 110----- ............................cellReselectionPriority:0x6 (6) ---01--- ............................neighCellConfig:01(01) ..........................InterFreqCarrierFreqInfo 27> 22 0010---- ............................dl-CarrierFreq:0x94d2 (38098) 28> 75 01------ ............................q-RxLevMin:-0x3d (-61) --110101 ............................p-Max:0x17 (23) 29> 28 001----- ............................t-ReselectionEUTRA:0x1 (1) ---01000 ............................threshX-High:0x8 (8) 30> 5D 01011--- ............................threshX-Low:0xb (11) -----101 ............................allowedMeasBandwidth:mbw100 (5) 31> 65 0------- ............................presenceAntennaPort1:FALSE -110---- ............................cellReselectionPriority:0x6 (6) ----01-- ............................neighCellConfig:01(01) ..........................InterFreqCarrierFreqInfo 34> 41 01000--- ............................dl-CarrierFreq:0x9fe8 (40936) 35> 3A 001----- ............................q-RxLevMin:-0x3d (-61) 36> 94 1------- ............................p-Max:0x17 (23) -001---- ............................t-ReselectionEUTRA:0x1 (1) 37> 2E 0------- ............................threshX-High:0x8 (8) -01011-- ............................threshX-Low:0xb (11) 38> B2 1------- ............................allowedMeasBandwidth:mbw100 (5) -0------ ............................presenceAntennaPort1:FALSE --110--- ............................cellReselectionPriority:0x6 (6) -----01- ............................neighCellConfig:01(01) ..........................InterFreqCarrierFreqInfo 41> ...........................dl-CarrierFreq:0xa0b4 (41140) 42> 8D 1000---- ............................q-RxLevMin:-0x3e (-62) 43> 4A 01------ ............................p-Max:0x17 (23) --001--- ............................t-ReselectionEUTRA:0x1 (1) 44> D7 11------ ............................threshX-High:0xb (11) --01011- ............................threshX-Low:0xb (11) 45> 59 01------ ............................allowedMeasBandwidth:mbw100 (5) --0----- ............................presenceAntennaPort1:FALSE ---110-- ............................cellReselectionPriority:0x6 (6) ------01 ............................neighCellConfig:01(01) ..........................InterFreqCarrierFreqInfo 48> 00 ............................dl-CarrierFreq:0x9600 (38400) 49> 4E 01001--- ............................q-RxLevMin:-0x3d (-61) 50> A5 101----- ............................p-Max:0x17 (23) ---001-- ............................t-ReselectionEUTRA:0x1 (1) 51> 6B 011----- ............................threshX-High:0xb (11) ---01011 ............................threshX-Low:0xb (11) 52> AA 101----- ............................allowedMeasBandwidth:mbw100 (5) ---0---- ............................presenceAntennaPort1:FALSE ----101- ............................cellReselectionPriority:0x5 (5) 53> 88 1------- ............................neighCellConfig:01(01) ..........................InterFreqCarrierFreqInfo 55> 06 00000110 ............................dl-CarrierFreq:0xe06 (3590) 56> 24 001001-- ............................q-RxLevMin:-0x3d (-61) 57> AD 1------- ............................t-ReselectionEUTRA:0x1 (1) -01011-- ............................threshX-High:0xb (11) 58> 09 000----- ............................threshX-Low:0x8 (8) ---010-- ............................allowedMeasBandwidth:mbw25 (2) ------0- ............................presenceAntennaPort1:FALSE 59> 10 00------ ............................cellReselectionPriority:0x4 (4) --01---- ............................neighCellConfig:01(01) 61> CA ........................groupExtension-r15-0(CA擴展組-R15版本） ..........................interFreqCarrierFreqListExt-r12 （R12異頻載波頻點列表） 62> ...............InterFreqCarrierFreqInfo-r12 66> 8C 1-----...................dl-CarrierFreq-r12:0x8db3 (36275) -0............................q-RxLevMin-r12:-0x40 (-64)（小區最小接收電平:-64*2=-128） 67> 56 01------ ..........................t-ReselectionEUTRA-r12:0x1 (1) ........................threshX-High-r12:0xb (11)（向更高優先級頻率重選時使用的門限:11） 68>....................threshX-Low-r12:0xb (11)（向更低高優先級頻率重選時使用的門限:11） ----101- ..............................allowedMeasBandwidth-r12:mbw100 (5) -------0 ..............................presenceAntennaPort1-r12:FALSE 69> EA 111----- ..............................cellReselectionPriority-r12:0x7 (7) ---01--- ..............................neighCellConfig-r12:01(01) ..............................reducedMeasPerformance-r12:uu-true (0) ............................InterFreqCarrierFreqInfo-r12 73> 02 0000---- ..............................dl-CarrierFreq-r12:0x9690 (38544) 74> 75 01------ ..............................q-RxLevMin-r12:-0x3d (-61) --110101 ..............................p-Max-r12:0x17 (23) 75> 2B 001----- ..............................t-ReselectionEUTRA-r12:0x1 (1) ---01011 ..............................threshX-High-r12:0xb (11) 76> 5D 01011--- ..............................threshX-Low-r12:0xb (11) -----101 ..............................allowedMeasBandwidth-r12:mbw100 (5) 77> 55 0--.............................presenceAntennaPort1-r12:FALSE -101---- ..............................cellReselectionPriority-r12:0x5 (5) ----01-- ..............................neighCellConfig-r12:01(01) ..............................reducedMeasPerformance-r12:uu-true (0) ............................InterFreqCarrierFreqInfo-r12 81> 19 00011--- ..............................dl-CarrierFreq-r12:0xe63 (3683) 82> 3A 001----- ..............................q-RxLevMin-r12:-0x3d (-61) 83> 95 1------- ..............................p-Max-r12:0x17 (23) -001---- ..............................t-ReselectionEUTRA-r12:0x1 (1) 84> A1 1------- ..............................threshX-High-r12:0xb (11) -01000-- ..............................threshX-Low-r12:0x8 (8) 85> 22 0------- ..............................allowedMeasBandwidth-r12:mbw25 (2) -0------ ..............................presenceAntennaPort1-r12:FALSE --100--- ..............................cellReselectionPriority-r12:0x4 (4) -----01- ..............................neighCellConfig-r12:01(01) ..............................reducedMeasPerformance-r12:uu-true (0) -------0 86> 00 00000000 * 87> 00 00000000
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