lte介紹諾基亞西門子內(nèi)部培訓(xùn)資料(編輯修改稿)
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【文章內(nèi)容簡(jiǎn)介】 For 10ms switchpoint periodicity 20 169。 Nokia Siemens Networks Charles / 20220505 For internal use LTE Layer 2/3 For internal use 21 169。 Nokia Siemens Networks Charles / 20220505 User Plane LTE protocol stacks PDCP UE RLC MAC Physical Layer PDCP eNode B RLC MAC Physical Layer LTE Layer 2 ? Layer 2 protocols (=MAC amp。 RLC) terminate in BTS (eNode B) ? Also PDCP (Packet Data Convergence Protocol) terminates in eNode B – PDCP includes IP header pression and ciphering For internal use 22 169。 Nokia Siemens Networks Charles / 20220505 Functionality of L2 Layer (MAC, RLC, PDCP) MAC ? Data Transfer via Logical Channels. ? Multiplexing Logical Channels and mapping to Transport Channels. ? Scheduling and Radio Resource Allocation between UEs and between Logical Channels. ? Transport Format Selection. ? Hybrid ARQ Protocol. For internal use 23 169。 Nokia Siemens Networks Charles / 20220505 Functionality of L2 Layer (MAC, RLC, PDCP) RLC ? TM, UM, AM Data Transfer. ? Automatic Repeat Request (ARQ) Protocol. ? Concatenation, Segmentation, Resegmentation. ? InSequence Delivery. Duplicate Detection. For internal use 24 169。 Nokia Siemens Networks Charles / 20220505 Functionality of L2 Layer (MAC, RLC, PDCP) PDCP ? Data Transfer for User and Control Plane. ? Header Compression. ? Ciphering. ? Integrity Protection. ? Sequence Numbering. InSequence Delivery during HO. Duplicate Detection. For internal use 25 169。 Nokia Siemens Networks Charles / 20220505 LTE Layer 3 (RRC) Control Plane LTE protocol stacks RRC UE RLC MAC Physical Layer RRC eNode B RLC MAC Physical Layer ? Radio Resource Control (RRC) signaling is also terminated in eNode B (pared to RNC in WCDMA) ? One of the enablers for the flat model is the lack of macrodiversity ? RRC handles Broadcast, Paging, RRC connection management, Mobility managements and UE measurements 26 169。 Nokia Siemens Networks Charles / 20220505 For internal use LTE Peak Bit Rates For internal use 27 169。 Nokia Siemens Networks Charles / 20220505 Res ou r c e b l oc k s 6 15 25 50 100S ub c arr i ers 72 180 300 600 1200M o du la t io n c o din g 1 . 4 M H z 3 . 0 M H z 5 . 0 M H z 1 0 M H z 2 0 M H zQ P SK 1 /2 Sin g le s tr ea m 0 . 8 2 . 1 3 . 6 7 . 2 1 4 . 31 6 Q AM 1 /2 Sin g le s tr ea m 1 . 7 4 . 3 7 . 2 1 4 . 3 2 8 . 71 6 Q AM 3 /4 Sin g le s tr ea m 2 . 6 6 . 4 1 0 . 7 2 1 . 5 4 3 . 06 4 Q AM 3 /4 Sin g le s tr ea m 3 . 9 9 . 7 1 6 . 1 3 2 . 2 6 4 . 56 4 Q AM 4 /4 Sin g le s tr ea m 5 . 1 1 2 . 9 2 1 . 5 4 3 . 0 8 6 . 06 4 Q AM 3 /4 2 x 2 MI MO 7 . 7 1 9 . 3 3 2 . 2 6 4 . 5 1 2 9 . 06 4 Q AM 4 /4 2 x 2 MI MO 1 0 . 3 2 5 . 8 4 3 . 0 8 6 . 0 1 7 2 . 06 4 Q AM 4 /4 4 x 4 MI MO 2 0 . 6 5 1 . 6 8 6 . 0 1 7 2 . 0 3 4 3 . 9Downlink Peak Bit Rate ? 2x2 MIMO ? 64QAM ? Pilot symbols 1 out of 14 ? Reference symbol overhead % ? Result : 172 Mbps in 20 MHz and 86 Mbps in 10 MHz For internal use 28 169。 Nokia Siemens Networks Charles / 20220505 Res ou r c e b l oc k s 6 15 25 50 100S ub c arr i ers 72 180 300 600 1200M o du la t io n c o din g 1 . 4 M H z 3 . 0 M H z 5 . 0 M H z 1 0 M H z 2 0 M H zQ P SK 1 /2 Sin g le s tr ea m 0 . 8 2 . 1 3 . 6 7 . 2 1 4 . 31 6 Q AM 1 /2 Sin g le s tr ea m 1 . 7 4 . 3 7 . 2 1 4 . 3 2 8 . 71 6 Q AM 3 /4 Sin g le s tr ea m 2 . 6 6 . 4 1 0 . 7 2 1 . 5 4 3 . 01 6 Q AM 4 /4 Sin g le s tr ea m 3 . 4 8 . 6 1 4 . 3 2 8 . 7 5 7 . 36 4 Q AM 3 /4 Sin g le s tr ea m 3 . 9 9 . 7 1 6 . 1 3 2 . 2 6 4 . 56 4 Q AM 4 /4 Sin g le s tr ea m 5 . 1 1 2 . 9 2 1 . 5 4 3 . 0 8 6 . 06 4 Q AM 4 /
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