[OAI] NB-IoT简介和开发计划

简介

NarrowBand-Things of Things（NB-IoT）是第13版的3GPP蜂窝网络技术，用于提供物联网服务。
•NB-IoT可以部署在“带内”，普通LTE运营商或LTE运营商的保护频段，也可以“独立”部署在专用频谱中。
•NB-IoT的架构基于LTE，但由于物联网服务的需求而有一些变化。

LTE与NB-IOT不同

LTE	NB-IOT
Large packet size	Small packet size
High data rate	Low data rate
Large bandwidth	Small bandwidth
Low delay tolerant	High delay tolerant
Short battery life	Very long battery life
High device cost	Low device cost
High power consumption	Low power consumption

开发

Primitive Direction Document
MAC_RRC SAP
3.1 mac_rrc_data_req RRCMAC openair2\RRC\L2_INTERFACE\openair_rrc_L2_interface.c
3.2 rrc_mac_config_req RRCMAC openair2\LAYER2\MAC\Config.c
3.3 mac_rrc_data_ind MACRRC openair2\PHY_INTERFACE\defs.h
3.4 mac_eNB_get_rrc_status MACRRC openair2\RRC\LITE\L2_interface.c
3.5 rrc_mac_remove_ue RRCMAC openair2\RRC\LITE\L2_interface.c
3.6 mac_eNB_rrc_ul_in_sync MACRRC openair2\RRC\LITE\L2_interface.c
3.7 rrc_rx_tx MACRRC openair2\RRC\LITE\rrc_common.c
MAC_RLC SAP
3.8 mac_rlc_data_req RLCMAC openair2\LAYER2\RLC\rlc_mac.c
3.9 mac_rlc_data_ind MACRLC openair2\LAYER2\RLC\rlc_mac.c
3.10 mac_rlc_status_ind MACRLC openair2\LAYER2\RLC\rlc_mac.c
MAC_PHY SAP
3.11 eNB_dlsch_ulsch_scheduler PHYMAC openair2\LAYER2\MAC\eNB_dlsch_ulsch_scheduler.c
3.12 get_dlsch_sdu PHYMAC openair2\LAYER2\MAC\eNB_scheduler_dlsch.c
3.13 get_dci_sdu PHYMAC openair2\LAYER2\MAC\eNB_scheduler_primitives.c
3.14 get_mch_sdu PHYMAC openair2\LAYER2\MAC\eNB_scheduler_mch.c
3.15 initiate_ra_proc PHYMAC openair2\LAYER2\MAC\eNB_scheduler_RA.c
3.16 fill_rar PHYMAC openair2\LAYER2\MAC\rar_tools.c
3.17 cancel_ra_proc PHYMAC openair2\LAYER2\MAC\eNB_scheduler_RA.c
3.18 rx_sdu PHYMAC openair2\LAYER2\MAC\eNB_scheduler_ulsch.c
3.19 get_eNB_UE_stats MACPHY openair2\PHY_INTERFACE\defs.h
3.20 SR_indication PHYMAC openair2\LAYER2\MAC\eNB_scheduler_primitives.c
3.21 mrbch_phy_sync_faliure PHYMAC openair2\LAYER2\MAC\main.c
3.22 get_rballoc MACPHY openair2\PHY_INTERFACE\defs.h
3.23 computeRIV MACPHY openair2\PHY_INTERFACE\defs.h
3.24 get_ue_active_harq_pid MACPHY openair2\PHY_INTERFACE\defs.h
3.25 get_TBS MACPHY openair2\PHY_INTERFACE\defs.h
3.26 lte_frame_params MACPHY openair2\PHY_INTERFACE\defs.h
3.27 get_transmission_mode MACPHY openair2\PHY_INTERFACE\defs.h
3.28 get_nCCE_max MACPHY openair2\PHY_INTERFACE\defs.h
3.29 phy_config_sib1_eNB MACPHY openair1\PHY\INIT\lte_init.c
3.30 phy_config_sib2_eNB MACPHY openair1\PHY\INIT\lte_init.c
3.31 phy_config_sib13_eNB MACPHY openair1\PHY\INIT\lte_init.c
3.32 phy_config_dedicated_eNB MACPHY openair2\PHY_INTERFACE\mac_phy_primitives.c

流程