IEEE 1914.3 标准：Radio over Ethernet 封装和映射协议

1914.3

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IEEE Standard for Radio over Ethernet Encapsulations and Mappings IEEE 1914.3 标准是关于 Radio over Ethernet (RoE) 协议的详细规范，特别是应用于 5G NR 前传接口中的 RoE 协议。下面是该标准的详细知识点解释：一、RoE 协议简介 RoE 协议是一种将无线电协议封装到以太网帧中的技术，允许无线电信号通过以太网进行传输。RoE 协议可以应用于各种无线电系统，包括 5G NR、LTE、WCDMA 等。二、IEEE 1914.3 标准概述 IEEE 1914.3 标准是 IEEE Communications Society 发布的一份关于 RoE 协议的标准。该标准定义了 RoE 协议的封装和映射机制，用于将无线电协议封装到以太网帧中。该标准提供了结构无关的定义，可以应用于任何数字化的无线电数据。三、结构无关定义 IEEE 1914.3 标准提供了结构无关的定义，允许在不考虑具体无线电系统的情况下，将无线电协议封装到以太网帧中。这种定义方式使得 RoE 协议可以应用于各种无线电系统。四、结构感知定义 IEEE 1914.3 标准还提供了结构感知的定义，特别是针对 Common Public Radio Interface (CPRI) 的定义。CPRI 是一种常用的无线电接口标准，用于在无线电基站和核心网络之间进行数据交换。五、本机模式定义 IEEE 1914.3 标准还提供了本机模式的定义，用于描述数字化的无线电数据。这种定义方式使得 RoE 协议可以应用于各种数字化的无线电系统。六、RoE 协议在 5G NR 前传接口中的应用 RoE 协议可以应用于 5G NR 前传接口中，以提高前传接口的带宽和可靠性。在 5G NR 前传接口中，RoE 协议可以用于将无线电信号封装到以太网帧中，然后通过以太网进行传输。七、结论 IEEE 1914.3 标准提供了 RoE 协议的详细规范，特别是应用于 5G NR 前传接口中的 RoE 协议。该标准的发布将有助于促进 RoE 协议在无线电系统中的应用和发展。

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Figure 26—Timing packet format .................................................................................................................. 56

Figure B.1—Packed position AxC Container mapping in the I/Q data block ................................................. 65

Figure B.2—Flexible position AxC Container mapping in the I/Q data block ............................................... 65

Figure B.3—Example of CPRI mapping method #3 ...................................................................................... 66

Figure B.4—Example of using modulo rules and the structure-aware RoE mapper ....................................... 66

Figure B.5—Example of conguration parameter sets ................................................................................... 67

Figure E.1—RoE OAM TLV Example........................................................................................................... 74

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List of Tables

Table 1—RoE EtherType ............................................................................................................................... 17

Table 2—subType mapping table ................................................................................................................... 22

Table 3—RoE subType values ....................................................................................................................... 23

Table 4—RoE owID values .......................................................................................................................... 24

Table 5—Sequence number related parameters .............................................................................................. 26

Table 6—Object type enumeration ................................................................................................................. 30

Table 7—Ethernet link parameters ................................................................................................................. 30

Table 8—CPRI port parameters ..................................................................................................................... 31

Table 9—RoE mapper/de-mapper parameter relevance ................................................................................. 31

Table 10—RoE mapper parameters ................................................................................................................ 32

Table 11—RoE de-mapper parameters ........................................................................................................... 34

Table 12—subType mapping object parameters ............................................................................................. 35

Table 13—Parameters under RoE.Container branch ...................................................................................... 38

Table 14—Control process RoE mappers for CPRI control words ................................................................. 41

Table 15—CPRI control word RoE mapper container parameters ................................................................. 43

Table 16—Subchannel word bit masks .......................................................................................................... 44

Table 17—Hyper-frame ltering options ....................................................................................................... 44

Table 18—Parameters under mapper[mapperID].[fftID] branch ................................................................... 47

Table 19—Parameters mapper[mapperID].[fftID].[PRACH] branch ............................................................ 49

Table 20—RoE control packet opCode values ............................................................................................... 50

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1. Overview

1.1 Scope

This standard denes the encapsulation and mapping of radio protocols for transport over Ethernet frames,

using radio over Ethernet (RoE). Structure-agnostic denitions are provided for any digitized radio data.

Structure-aware denitions are provided for the Common Public Radio Interface (CPRI™). Native mode

denitions are provided for digitized radio in-phase and quadrature (I/Q) payload and control data channels.

1.2 Purpose

This standard enables the transfer of I/Q user-plane data, vendor-specic data, and control and management

(C&M) information channels across an Ethernet-based packet-switched network. The standard fosters

interoperability among implementations by dening the framing, the encapsulation of the information, and a

common Ethernet Type for RoE purposes.

2. Normative references

The following referenced documents are indispensable for the application of this standard (i.e., they must be

understood and used; therefore, each referenced document is cited in text, and its relationship to this standard

is explained). For dated references, only the edition cited applies. For undated references, the latest edition of

the referenced document (including any amendments or corrigenda) applies.

3GPP Specication TS 36.211, Evolved Universal Terrestrial Radio Access (E-UTRA); Physical channels and

modulation.

Common Public Radio Interface (CPRI™) Specication, v7.0.

2,3

IEEE Std 754™-2008, IEEE Standard for Binary Floating-Point Arithmetic.

4,5

The 3GPP specication is available from the 3GPP Website, http:// www .3gpp .org/ specications/ releases.

The CPRI specication is available from the CPRI Website, http:// www .cpri .info/ .

CPRI is a trademark of Nokia.

IEEE publications are available from The Institute of Electrical and Electronics Engineers (https:// standards .ieee .org/ ).

The IEEE standards or products referred to in this clause are trademarks of The Institute of Electrical and Electronics Engineers, Inc.

IEEE Standard for Radio over Ethernet

Encapsulations and Mappings

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IEEE Std 1914.3-2018

IEEE Standard for Radio over Ethernet Encapsulations and Mappings

3. Denitions, acronyms, and abbreviations

3.1 Denitions

For the purposes of this standard, the following terms and denitions apply. The IEEE Standards Dictionary

Online should be consulted for terms not dened in this clause.

radio over Ethernet (RoE) de-mapper: A de-mapper that performs the task of extracting radio data from

Ethernet frames.

radio over Ethernet (RoE) eld: A eld that refers to a value within an RoE header.

radio over Ethernet (RoE) ow: An individual connection, identied by a ow identier, between two

specic RoE nodes.

radio over Ethernet (RoE) mapper: A mapper that performs the task of forming Ethernet frames from radio

data sources.

radio over Ethernet (RoE) object: An RoE mapper, RoE de-mapper, Ethernet link, Common Public Radio

Interface (CPRI™) port, forward and/or inverse Fast Fourier transform [(i)FFT] or physical random access

channel (PRACH) function.

radio over Ethernet (RoE) parameter: A value that describes how an RoE connection operates. Parameters

are enumerated to facilitate operation, administration, and maintenance (OAM) type-length-value (TLV)

control.

3.2 Acronyms and abbreviations

1PPS one pulse per second

AxC antenna carrier

BFN Node B frame number

CID IEEE company identier

C&M control and management

C-plane term used in the CPRI specication for the control plane

CPRI Common Public Radio Interface

DA destination address

E-UTRA evolved universal terrestrial radio access (3GPP)

eNB evolved Node B

FCS frame check sequence

FDD frequency division duplex

FDV frame delay variation

FEC forward error correction

FFT Fast Fourier transform

FTD frame transfer delay

IEEE Standards Dictionary Online is available at https:// dictionary .ieee .org/ .

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