IEEE802.16-2017标准：宽带无线接入系统修正4

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"IEEE802.16是2017版的官方协议，它涵盖了MAC（媒体访问控制）层和PHY（物理）层的规范，用于宽带无线接入系统。这个标准是之前版本（如802.16p、802.16n、802.16q）的修订版，特别关注在1.25MHz信道带宽内的固定和移动无线接入。该标准由IEEE局域网/城域网标准委员会赞助，并由IEEE计算机学会和微波理论与技术学会联合制定。" IEEE 802.16，通常被称为WiMAX（全球互通微波接入），是一种宽带无线接入标准，旨在提供城域范围内的数据传输服务，能够支持高速互联网接入、语音电话以及视频流等应用。此标准的制定是为了促进无线通信技术的发展，提高网络的性能和效率。 MAC层是数据链路层的一部分，负责管理网络中的多个设备如何共享媒体资源。在IEEE 802.16中，MAC层规范了各种访问机制，包括多址接入控制、服务质量(QoS)保证、资源分配以及错误检测和纠正。MAC层的设计确保了有效且公平的数据传输，同时减少了冲突和等待时间。 PHY层则规定了无线信号的物理特性，如调制方式、编码方案、频率选择和功率控制。802.16协议支持多种PHY技术，如OFDM（正交频分复用）和MIMO（多输入多输出）技术，这些技术能够提供高带宽和长距离的无线连接。OFDM将大带宽信号分解成多个小的子载波，从而降低了信号干扰和多径衰落的影响。MIMO则通过利用多个天线来提高数据传输速率和可靠性。 IEEE 802.16s-2017的第四次修订主要关注在1.25MHz信道带宽下的无线接入，这可能是为了适应特定环境或应用场景，例如在有限的频谱资源下提供服务。此外，这一版本可能还包含了对安全、网络管理和移动性等方面的增强，以满足不断变化的技术需求和用户期望。了解并掌握IEEE 802.16协议对于设计、部署和维护宽带无线通信系统至关重要，它为固定和移动设备提供了高效、可靠和灵活的连接方式，推动了无线通信技术的前进。

Introduction

Mission critical entities have a strong preference for private, licensed networks in VHF/UHF frequencies for

their data communications needs. VHF/UHF licensed channels narrower than 1.25 MHz are readily

available in the secondary markets at a lower cost than commercial wideband channels. Example operating

frequencies include 217 MHz, 700 MHz, 900 MHz, and 1.4 GHz. The base standard and thus this

amendment are not limited to specific operating frequencies. Furthermore, VHF/UHF channels have

superior propagation characteristics requiring less infrastructure and are capable of meeting capacity needs

of private networks. This amendment facilitates the development of innovative, cost-effective, and

interoperable multivendor products for private licensed wireless access systems for mission critical

networks. Applications include smart grids supporting generation, transmission, and distribution; field area

networks; electric and gas utilities; smart fields and smart pipes for oil, gas, and hazardous materials

transport; intelligent transportation for rail and highway systems; and federal, state, and local uses for

homeland security and environmental and seismic monitoring.

Stakeholders include users and customers in multiple markets, including electric and natural gas utilities, oil

and gas companies, transportation including commercial and public rail, and public sector entities including

federal state and local governments. Stakeholders also include spectrum license holders and equipment

manufacturers with an interest in standardized products to achieve economies of scale.

This standard is an amendment to IEEE Std 802.16-2012, as amended by IEEE Std 802.16p-2012,

IEEE Std 802.16n-2013, and IEEE Std 802.16q-2015.

This introduction is not part of IEEE Std 802.16s-2017, IEEE Standard for Air Interface for Broadband Wireless

Access Systems—Amendment 4: Fixed and Mobile Wireless Access in Channel Bandwidth up to 1.25 MHz.

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Contents

3. Definitions ......................................................................................................................................... 13

6. MAC common part sublayer.............................................................................................................. 14

6.3 Data/Control plane................................................................................................................. 14

6.3.2.1 MAC header formats .............................................................................. 14

6.3.2.1.1.1 Relay MAC header format......................................................... 14

6.3.2.1.1.2 Generic MAC header format for DL-MAP and

UL-MAP MAC messages when channel bandwidth is

less than 1.25 MHz .................................................................... 14

6.3.2.3 MAC management messages.................................................................. 14

6.3.2.3.2 DL-MAP (Downlink map) message .......................................... 15

6.3.2.3.4 UL-MAP (UL map) message..................................................... 16

6.3.3 Construction and transmission of MAC PDUs.......................................................... 16

6.3.3.5.2 CRC32 calculation for OFDMA mode ..................................... 16

6.3.3.5.3 CRC8 calculation for OFDMA mode ....................................... 16

8. Physical layer (PHY) ......................................................................................................................... 17

8.1 WirelessMAN-SC PHY specification ................................................................................... 17

8.1.3 Duplexing techniques and PHY Type parameter encodings ..................................... 17

8.1.4 DL PHY .....................................................................................................................17

8.1.4.4.7 DL modulation ........................................................................... 17

8.1.5 UL PHY .....................................................................................................................17

8.1.5.5.7 UL modulation ........................................................................... 17

8.4 WirelessMAN-OFDMA PHY ............................................................................................... 18

8.4.2 OFDMA symbol description, symbol parameters and transmitted signal................. 18

8.4.2.3 Primitive parameters............................................................................... 18

8.4.3 OFDMA basic terms definition ................................................................................. 19

8.4.3.1 Slot and data region ................................................................................ 19

8.4.3.4 OFDMA data mapping ........................................................................... 19

8.4.5 Map message fields and IEs....................................................................................... 19

8.4.5.1 DL-MAP PHY Synchronization field .................................................... 19

8.4.5.2 Frame duration codes.............................................................................. 20

8.4.5.3 DL-MAP IE format ................................................................................ 21

8.4.5.3.1 DIUC allocation......................................................................... 22

8.4.5.3.4 STC DL Zone IE format ............................................................ 22

8.4.5.4 UL-MAP IE format ................................................................................ 23

8.4.5.4.1 UIUC allocation......................................................................... 25

8.4.5.4.2 PAPR Reduction/Safety Zone/Sounding Zone Allocation IE ... 26

8.4.5.4.3 CDMA Allocation UL-MAP IE format..................................... 26

8.4.5.4.7 UL Zone Switch IE format ........................................................ 27

8.4.6 OFDMA subcarrier allocations.................................................................................. 27

8.4.6.1 Downlink (DL) ....................................................................................... 28

8.4.6.1.1 Preamble for channel bandwidths greater than or

equal to 1.25 MHz ..................................................................... 28

8.4.6.1.1a Preamble structure for channel bandwidths less than

1.25 MHz ................................................................................... 28

8.4.6.1.2 Symbol structure ........................................................................ 28

8.4.6.1.2.7 Symbol structure for band AMC for 128-FFT for

channel bandwidth less than 1.25 MHz ..................................... 29

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