Cov txheej txheem:

Cov channel hauv LTE yog dab tsi?
Cov channel hauv LTE yog dab tsi?

Video: Cov channel hauv LTE yog dab tsi?

Video: Cov channel hauv LTE yog dab tsi?
Video: yog hmoov dab tsi. Zoo Xyooj (cover) 2024, Kaum ib hlis
Anonim

LTE channel hom

Lub cev cov channel : Cov no yog kis tau tus mob cov channel uas nqa cov neeg siv cov ntaub ntawv thiab tswj cov lus. Logical cov channel : Muab kev pabcuam rau Medium Access Control (MAC) txheej nyob rau hauv LTE raws tu qauv.

Kuj paub yog, dab tsi yog lub cev channel?

Lub cev Channel A lub cev xov tooj cua channel yog ib lub xov tooj cua zaus los yog ob zaus uas tau faib los ntawm lub koom haum tswj hwm mus rau ib lub koom haum rau kev sib txuas lus. Cias muab, qhov no txhais tau hais tias hauv xov tooj cua ncaj qha rau xov tooj cua kev sib txuas lus tib zaus yuav siv tau rau kev txais tos thiab kev sib kis.

Dab tsi yog qhov laj thawj raws tau nqa los ntawm Pdcch thiab Pucch lub cev raws? Kev tswj lub cev

Channel npe Lub ntsiab lus Downlink
Lub cev hybrid ARQ qhov taw qhia channel PHICH X
Lub cev downlink tswj channel PDCCH X
Relay lub cev downlink tswj channel R-PDCCH X
Lub cev uplink tswj channel PUCCH

Ib yam li ntawd, tib neeg nug, cov ntaub ntawv twg yog siv rau lub cev txheej?

Downlink lub cev channels:

  • Lub cev Downlink Shared Channel (PDSCH) nqa DL-SCH thiab PCH.
  • Lub cev Downlink Control Channel (PDCCH)
  • Lub cev HARQ Indicator Channel (PHICH)
  • Lub cev tswj qhov taw qhia Channel (PCFICH)
  • Lub cev tshaj tawm Channel (PBCH)

Dab tsi yog qhov kev sib tham channel hauv LTE?

LCG ( Logical Channel Group ) Nrog kev hloov kho me ntsis ntawm 3GPP cov lus piav qhia, LCG tuaj yeem txhais tau tias "A pab pawg ntawm Logical Channel qhov xwm txheej tsis yog raug tshaj tawm." Muaj plaub LCGs tau siv hauv LTE thiab txhua tus ntawm pab pawg muaj nws tus kheej ID los ntawm 0 mus rau 3.

Pom zoo: