做的网站底部应该标注什么,制作应用的网站,中国企业库,东莞网站seo方法O-RAN Fronthual CU/Sync/Mgmt 平面和协议栈 O-RAN Fronthual CU/Sync/Mgmt 平面和协议栈O-RAN前端O-RAN 前传平面C-Plane#xff08;控制平面#xff09;#xff1a;控制平面消息定义数据传输、波束形成等所需的调度、协调。U-Plane#xff08;用户平面#xff09;#… O-RAN Fronthual CU/Sync/Mgmt 平面和协议栈 O-RAN Fronthual CU/Sync/Mgmt 平面和协议栈O-RAN前端O-RAN 前传平面C-Plane控制平面控制平面消息定义数据传输、波束形成等所需的调度、协调。U-Plane用户平面用于在 5G 数字严格的时间限制内实现高效数据传输的用户平面消息。S-Plane同步平面M-plane管理平面 O-RAN 前传的协议栈O-RAN Fronthual C-U/Sync/Mgmt Planes and Protocol StackO-RAN FronthualO-RAN Fronthaul PlanesC-Plane (Control Plane): Control plane messages define the scheduling, coordination required for data transfer, beam-forming etc.U-Plane (User Plane): User plane messages for efficient data transfer within the strict time limits of 5G numerologies.S-Plane (Synchronization Plane) : Synchronization plane is responsible for the timing and sync aspects between the O-DU and O-RU. In Cloud RAN deployments, a high accurate synchronization is required between O-DU and O-RUs to achieve controlled linking for inter-O-RU sync operation for TDD, Carrier Aggregation using multiple O-RUs, MIMO, and similar processes. Using S-Plane, O-RAN fronthaul specifications support protocols such as PTP and SyncE to achieve high-accuracy synchronization on the O-RU side by synchronizing with the clock high-performance available at O-DU side.M-plane (Management Plane) : Management plane messages are used to manage the radio unit. M-Plane provides a variety of O-RU management functions to set parameters on the O-RU side as required by the C/U-Plane and S-Plane , e.g. manage O-RU software, perform fault management, etc. O-RAN fronthaul specification for M-Plane provides various parameters as data models to FCAPS functions. This data models eliminates dependence on each O-RU vendorʼs implementation and makes a real multi-vendor Open RAN possible Protocol Stack for O-RAN Fronthaul O-RAN Fronthual CU/Sync/Mgmt 平面和协议栈
O-RAN前端
DU 和 RU 之间的接口称为Fronthaul 。当此接口允许将任何供应商 DU 连接到任何供应商 RU 时称为Open Fronthaul。为了实现这种多供应商DU和RU互连需要一些信令格式和控制消息这些由开放标准即O-RAN 联盟详细说明作为 O-RAN前传规范的一部分。
这些规范预测了分布式单元 ( DU ) 和无线电单元 ( RU ) 交互的不同场景、底层5G的需求、两个端点之间的时间同步问题并为服务提供商做好了部署准备。通过解决这些问题O-RAN 标准确保了DU和RU供应商之间的互操作性。 O-RAN 前传平面
O-RAN Fronthaul定义了以下操作平面
C-Plane控制平面控制平面消息定义数据传输、波束形成等所需的调度、协调。
调度和波束形成命令DL 预编码配置混合数学和 PRACH 处理
U-Plane用户平面用于在 5G 数字严格的时间限制内实现高效数据传输的用户平面消息。
支持数据压缩I/Q数据传输DL 数据预编码
S-Plane同步平面
同步平面负责O-DU和 O-RU 之间的定时和同步方面。在Cloud RAN部署中 O-DU和 O-RU之间需要高精度同步以实现TDD、使用多个O-RU 的载波聚合、MIMO和类似过程的O-RU 间同步操作的受控链接。使用S-Plane O-RAN 前传规范支持 PTP 和 SyncE 等协议通过与O-DU端可用的高性能时钟同步在 O-RU 端实现高精度同步。
同步类型用于同步的 PTP 和 SyncE 配置文件时间和频率同步指南
M-plane管理平面
管理平面消息用于管理无线电单元。M -Plane提供各种 O-RU 管理功能以根据 C/U-Plane 和 S-Plane 的要求在 O-RU 侧设置参数例如管理O-RU软件、执行故障管理等。M -Plane的 O-RAN 前传规范为FCAPS功能提供了各种参数作为数据模型。这些数据模型消除了对每个 O-RU 供应商实施的依赖并使真正的多供应商 Open RAN 成为可能
支持分层/混合模型C/U 平面 IP 和延迟管理FCAPS 包括同步配置和状态
O-RAN 前传的协议栈
上述各平面的O-RAN前传规范协议栈如下图所示。 C/U-Plane O-RAN 前传规范支持通过以太网直接传输eCPRI或以太网无线电(RoE) 所用数据的协议栈以及通过 UDP/IP 传输信号的可选协议栈O-RAN 前传中的S-Plane支持通过以太网传输精确时间协议(PTP) 和SyncE 中使用的数据的协议栈M-Plane支持通过以太网传输NETCONF中使用的信号的协议栈 使用带有安全外壳(SSH) 的TCP传输 IP
O-RAN Fronthual C-U/Sync/Mgmt Planes and Protocol Stack
O-RAN Fronthual
The interface between DU and RU is known as Fronthaul. When this interface allows to connect any vendor DU to any vendor RU, know as Open Fronthaul. To enable this multi vendor DU and RU interconnection some signaling formats and control messaging is required are detailed by Open Standard i.e. O-RAN Alliance as part of O-RAN fronthaul specification.
These specifications anticipated different scenarios about Distributed Unit (DU) and Radio Unit (RU) interaction, what the underlying 5G will demand, time synchronization issues between two endpoints, and it make it deployment ready for Service Providers. By addressing these issues, the O-RAN standard is ensuring inter-op between DU and RU vendors. O-RAN Fronthaul Planes
O-RAN Fronthaul defines following planes of operations:
C-Plane (Control Plane): Control plane messages define the scheduling, coordination required for data transfer, beam-forming etc.
Scheduling and beam-forming commandsDL precoding configurationMixed numerology and PRACH handling
U-Plane (User Plane): User plane messages for efficient data transfer within the strict time limits of 5G numerologies.
Support Data CompressionI/Q data transferDL data precoding
S-Plane (Synchronization Plane) : Synchronization plane is responsible for the timing and sync aspects between the O-DU and O-RU. In Cloud RAN deployments, a high accurate synchronization is required between O-DU and O-RUs to achieve controlled linking for inter-O-RU sync operation for TDD, Carrier Aggregation using multiple O-RUs, MIMO, and similar processes. Using S-Plane, O-RAN fronthaul specifications support protocols such as PTP and SyncE to achieve high-accuracy synchronization on the O-RU side by synchronizing with the clock high-performance available at O-DU side.
Synchronization TypologiesPTP and SyncE profiles for SynchronizationTime and Frequency Sync guidelines
M-plane (Management Plane) : Management plane messages are used to manage the radio unit. M-Plane provides a variety of O-RU management functions to set parameters on the O-RU side as required by the C/U-Plane and S-Plane , e.g. manage O-RU software, perform fault management, etc. O-RAN fronthaul specification for M-Plane provides various parameters as data models to FCAPS functions. This data models eliminates dependence on each O-RU vendorʼs implementation and makes a real multi-vendor Open RAN possible
Support Hierarchical/Hybrid ModelC/U Plane IP and Delay managementFCAPS including sync configuration and status
Protocol Stack for O-RAN Fronthaul
The O-RAN fronthaul specifications protocol stack of each above mentioned plane is shown in below picture.
C/U-Plane, the O-RAN fronthaul specifications support a protocol stack that transmits data used by eCPRI or Radio over Ethernet (RoE) directly over Ethernet and an optional protocol stack that transmits the signals over UDP/IPS-Plane in O-RAN fronthaul support a protocol stack that transmits data used in Precision Time Protocol (PTP) and SyncE over EthernetM-Plane support a protocol stack that transmits signals used in NETCONF over Ethernet with IP transported using TCP with Secure SHell (SSH)
https://www.techplayon.com/o-ran-fornthual-c-u-sync-mgmt-planes-and-protocols-stack/
