3gpp协议解读(3GPP LTE协议)

3GPP是个标准化协议组织,其工作目标是制定协议实现由2G网络到3G网络的平滑过渡，保证未来技术的后向兼容性，支持轻松建网及系统间的漫游和兼容性。 3GPP协议的制订主要是以GSM核心网为基础
一般不会要你来实现，但要会用，并且那个要求是“了解”

移动通信协议 手机基站核心网之间的协议

射频电路，其实就是高频发射电路，至于频率范围，现在根据我的理解，基本就等于彩电高频头的接受范围，45-870M之间吧。射频电路太广了，如175M以内的发射机，88-108M之间的 FM发射，游戏机、VCD的射频盒等等，都可以说是射频电路的典型应用
硬件设计-射频电路设计基础-射频器件基础知识，总共有14课时，本节是第1课时- 射频终端链路（1），主讲焦留彦老师，焦留彦老师为EDA365射频、微波论坛特邀版主，原华为射频功放技术专家。课程亮点：射频基本电路以NB-IOT为例，解读3GPP协议关键射频（NB-IOT）指标，理解器件关键指标，掌握选型技能，简要介绍射频指标测试方案；结合硬件工程师的实际工作，让硬件工程师对射频器件有个初步的了解。
射频简称RF射频就是射频电流，它是一种高频交流变化电磁波的简称。每秒变化小于1000次的交流电称为低频电流，大于1000次的称为高频电流，而射频就是这样一种高频电流。有线电视系统就是采用射频传输方式的 在电子学理论中，电流流过导体，导体周围会形成磁场；交变电流通过导体，导体周围会形成交变的电磁场，称为电磁波。在电磁波频率低于100khz时，电磁波会被地表吸收，不能形成有效的传输，但电磁波频率高于100khz时，电磁波可以在空气中传播，并经大气层外缘的电离层反射，形成远距离传输能力，我们把具有远距离传输能力的高频电磁波称为射频，英文缩写：RF组成编辑高频电路基本上是由无源元件、有源器件和无源网络组成的。高频电路中使用的元器件与低频电路中使用的元器件频率特性是不同的。高频电路中无源线性元件主要是电阻(器)、电容(器)和电感(器)。在电子技术领域，射频电路的特性不同于普通的低频电路。主要原因是在高频条件下，电路的特性与低频条件下不同，因此需要利用射频电路理论去理解射频电路的工作原理。在高频条件下，杂散电容和杂散电感对电路的影响很大。杂散电感存在于导线连接以及组件本身存在的内部自感。杂散电容存在于电路的导体之间以及组件和地之间。在低频电路中，这些杂散参数对电路的性能影响很小，随着频率的增加，杂散参数的影响越来越大。在早期的VHF频段电视接收机中的高频头，以及通信接收机的前端电路中，杂散电容的影响都非常大以至于不再需要另外添加电容。此外，在射频条件下电路存在趋肤效应。与直流不同的是，在直流条件下电流在整个导体中流动，而在高频条件下电流在导体表面流动。其结果是，高频的交流电阻要大于直流电阻。 在高频电路中的另一个问题是电磁辐射效应。随着频率的增加，当波长可与电路尺寸12比拟时，电路会变为一个辐射体。这时，在电路之间、电路和 外部环境之间会产生各种耦合效应，因而引出许多干扰问题。这些问题在低频条件下往往是无关紧要的。

3GPP的目标是实现由2G网络到3G网络的平滑过渡，保证未来技术的后向兼容性，支持轻松建网及系统间的漫游和兼容性。 其职能： 3GPP主要是制订以GSM核心网为基础，UTRA(FDD为W-CDMA技术，TDD为TD-CDMA技术)为无线接口的第三代技术规范。 这些个的对应意思，建议是咨询专业人士，查不到能提供参考的资料。
3GPP协议标准的版本

所有36系列协议总结如下： TS 36.101Evolved Universal Terrestrial Radio Access (E-UTRA); User Equipment (UE) radio transmission and reception.TS 36.104Evolved Universal Terrestrial Radio Access (E-UTRA); Base Station (BS) radio transmission and reception.TS 36.106Evolved Universal Terrestrial Radio Access (E-UTRA); Rrepeater radio transmission and reception.TS 36.113Evolved Universal Terrestrial Radio Access (E-UTRA); Base Station (BS) and repeater ElectroMagnetic Compatibility (EMC).TS 36.124Evolved Universal Terrestrial Radio Access (E-UTRA); Electromagnetic compatibility (EMC) requirements for mobile terminals and ancillary equipment.TS 36.133Evolved Universal Terrestrial Radio Access (E-UTRA); Requirements for support of radio resource management.TS 36.141Evolved Universal Terrestrial Radio Access (E-UTRA); Base Station (BS) conformance testing.TS 36.143Evolved Universal Terrestrial Radio Access (E-UTRA); Repeater conformance testing.TS 36.201Evolved Universal Terrestrial Radio Access (E-UTRA); Long Term Evolution (LTE) physical layer; General description.TS 36.211Evolved Universal Terrestrial Radio Access (E-UTRA); Physical channels and modulation.TS 36.212Evolved Universal Terrestrial Radio Access (E-UTRA); Multiplexing and channel coding.TS 36.213Evolved Universal Terrestrial Radio Access (E-UTRA); Physical layer procedures.TS 36.214Evolved Universal Terrestrial Radio Access (E-UTRA); Physical layer - Measurements.TS 36.300Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access (E-UTRAN); Overall description; Stage 2.TS 36.302Evolved Universal Terrestrial Radio Access (E-UTRA); Services provided by the physical layer.TS 36.304Evolved Universal Terrestrial Radio Access (E-UTRA); User Equipment (UE) procedures in idle mode.TS 36.306Evolved Universal Terrestrial Radio Access (E-UTRA); User Equipment (UE) radio access capabilities.TS 36.314Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Layer 2 - Measurements.TS 36.321Evolved Universal Terrestrial Radio Access (E-UTRA); Medium Access Control (MAC) protocol specification.TS 36.322Evolved Universal Terrestrial Radio Access (E-UTRA); Radio Link Control (RLC) protocol specification.TS 36.323Evolved Universal Terrestrial Radio Access (E-UTRA); Packet Data Convergence Protocol (PDCP) specification.TS 36.331Evolved Universal Terrestrial Radio Access (E-UTRA); Radio Resource Control (RRC); Protocol specification.TS 36.401Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Architecture description.TS 36.410Evolved Universal Terrestrial Radio Access Network (E-UTRAN); S1 layer 1 general aspects and principles.TS 36.411Evolved Universal Terrestrial Radio Access Network (E-UTRAN); S1 layer 1.TS 36.412Evolved Universal Terrestrial Radio Access Network (E-UTRAN); S1 signalling transport.TS 36.413Evolved Universal Terrestrial Radio Access (E-UTRA) ; S1 Application Protocol (S1AP).TS 36.414Evolved Universal Terrestrial Radio Access Network (E-UTRAN); S1 data transport.TS 36.420Evolved Universal Terrestrial Radio Access Network (E-UTRAN); X2 general aspects and principles.TS 36.421Evolved Universal Terrestrial Radio Access Network (E-UTRAN); X2 layer 1.TS 36.422Evolved Universal Terrestrial Radio Access Network (E-UTRAN); X2 signalling transport.TS 36.423Evolved Universal Terrestrial Radio Access Network (E-UTRAN); X2 Application Protocol (X2AP).TS 36.424Evolved Universal Terrestrial Radio Access Network (E-UTRAN); X2 data transport.TS 36.440Evolved Universal Terrestrial Radio Access Network (E-UTRAN); General aspects and principles for interfaces supporting Multimedia Broadcast Multicast Service (MBMS) within E-UTRAN.TS 36.441Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Layer 1 for interfaces supporting Multimedia Broadcast Multicast Service (MBMS) within E-UTRAN.TS 36.442Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Signalling Transport for interfaces supporting Multimedia Broadcast Multicast Service (MBMS) within E-UTRAN.TS 36.443Evolved Universal Terrestrial Radio Access Network (E-UTRAN); M2 Application Protocol (M2AP).TS 36.444Evolved Universal Terrestrial Radio Access Network (E-UTRAN); M3 Application Protocol (M3AP).TS 36.445Evolved Universal Terrestrial Radio Access Network (E-UTRAN); M1 Data Transport.TS 36.446Evolved Universal Terrestrial Radio Access Network (E-UTRAN); M1 User Plane protocol.TS 36.508Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Common test environments for User Equipment (UE) conformance testing.TS 36.509Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Terminal logical test interface; Special conformance testing functions.TS 36.521-1Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); User Equipment (UE) conformance specification; Radio transmission and reception Part 1: conformance testing.TS 36.521-2Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); User Equipment (UE) conformance specification; Radio transmission and reception Part 2: ICS.TS 36.523-1Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); User Equipment (UE) conformance specification; Part 1: Protocol conformance specification.TS 36.523-2Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); User Equipment (UE) conformance specification; Part 2: ICS.TS 36.523-3Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); User Equipment (UE) conformance specification; Part 3: Abstract Test Suites (ATS).TR 36.801Evolved Universal Terrestrial Radio Access (E-UTRA); Measurement Requirements.TR 36.803Evolved Universal Terrestrial Radio Access (E-UTRA); User Equipment (UE) radio transmission and reception.TR 36.804Evolved Universal Terrestrial Radio Access (E-UTRA); Base Station (BS) radio transmission and reception.TR 36.902Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Self-configuring and self-optimizing network (SON) use cases and solutions.TR 36.913Requirements for further advancements for E-UTRA (LTE-Advanced).TR 36.938Improved network controlled mobility between LTE and 3GPP2/mobile WiMAX radio technologies.TR 36.942Evolved Universal Terrestrial Radio Access (E-UTRA); Radio Frequency (RF) system scenarios.TR 36.956Evolved Universal Terrestrial Radio Access (E-UTRA); Repeater planning guidelines and system analysis. 3GPP网址