telecom

telecom (abbreviation/ acronym/ initialism )

• RAN: Radio Access Network
• UE:User Equipment //mobile phone
• Node B:Radio base station
• gNB:(Next Generation NodeB) //5g Base Station
• eNB: //Base Station
• NR: New Radio //5G radio interface between UE&gNB
• 5GCN:5G core network
• EPC:Evolved Packet Core //4G LTE core network
• UPF - User Plane Function
• GTP(GPRS Tunnelling Protocol) //https://github.com/free5gc/gtp5g
• AMF:Access and Mobility Management
• 3GPP:the Third-Generation Partnership Project //telecom stardard orgnazation
• PLMN Identity(Mobile Country Code (MCC), Mobile Network Code (MNC) and a cell ID)
• mobile identity (IMSI)

telcom abbrev map

• https://www.5g-networks.net/5g-technology/5g-terminology-the-gnb/

Generation	Radio Technology	Base Station Name
2G	GSM	BTS (Base Transceiver Station)
3G	UMTS	NodeB
4G	LTE	eNB, Evolved NodeB
5G	NR:New Radio	gNB, Next Generation NodeB

aritech view

• http://anisimoff.org/eng/5g/5g_overview.html

Spectrum usage & feature

• ref http://anisimoff.org/eng/5g/5g_overview.html
• Low-frequency bands < 3GHz 带宽低于20MHz, 长距离覆盖,稳定,低带宽
• Medium-frequency bands （3-6Ghz）cmW 厘米波 用多天线传输提高覆盖面 高带宽200MHz 5G的主要使用频段
• high-frequency bands,(6-24Ghz) mmW 毫米波，也是wifi使用的波段，5G也开始使用
• Massive MIMO and Beamforming()
• Diversity(frequency diversity) 单天线对,多频同传,不是所有频段都受到干扰,提高传输成功率 //Frequency diversity employs a single transmit/receive antenna pair, but operating at two or more widely spaced carrier frequencies.
• Spatial Multiplexing 空间复用, 多数据流复用同一通道
• Directivity (beamforming) 方向性波束,多天线服务不同方向互补干扰,提高覆盖率和抗干扰能力

google search

• SIM aes128 MILENAGE

Secret & Auth

• USIM have(AMF:Authentication Management Field,OPc:network operators key,LTE key Ki， IMSI：)
• https://medium.com/uw-ictd/lte-authentication-2d0810a061ec
• https://blog.magmaindia.org/2022/11/18/magma-milenage/
• 基于free5gc+UERANSIM 5G模拟环境的5G_AKA协议解析
• https://nickvsnetworking.com/confidentiality-algorithms-in-3gpp-milenage-xor-comp128/
• 安全芯片(CPU卡芯片COS|读写器芯片|mPos芯片|USB-key芯片)
• 2020年 中国智能安全芯片行业概览 //eSim与5G超级芯片
• 特种集成电路领军企业 //THD89/THC20/THC80 ST4SIM
• 抱紧你的SIM卡—5G物理安全初探 //相关性功耗分析 （Correlation Power Analysis, CPA）//SIM卡的侧信道信息泄露
• 破解一张智能卡，需要多少步 //mifare芯片 //Henryk Plotz和Karsten Nohl发现随机数发生器的规律
• Open On-Chip Debugger openpcd&picc //Proximity Integrated Circuit Cards (PICC) Proximity Coupling Devices (PCD)
• eSIM LPA (Local Profile Assistant) for android //System privilege required.
• Local Profile Assistant LPA Simulator

opensource

• https://osmocom.org/Open source mobile communications
• https://free5gc.org/blog/
• Open source 5G UE and RAN (gNodeB) implementation
• Platform for building access networks and modular network services www.magmacore.org/
• Open source 5G core network base on 3GPP R15 https://free5gc.org/
• https://github.com/free5gc/upf
• GTP-U Linux Kernel Module
• 5G application sample
• https://github.com/free5gc/ausf