Blog Archives
IEEE P29148标准
0IEEE P29148/CD2-Feb2010
Software and systems engineering — Life cycle processes —
Requirements engineering
本标准是关于软件和系统工程领域中的软件生命周期过程中的需求分析工程。本标准草案正在投票过程中。
IEEE P29148标准的目的是合并IEEE和ISO相关标准(ISO/IEC 29148),在软件工程的需求分析领域提供一个全面、统一、协调的国际标准。作为以下三个现行标准的替代:
• IEEE Std 830-1998, IEEE Recommended Practice for Software Requirements Specifications
• IEEE Std 1233-1998, IEEE Guide for Developing System Requirements Specifications
• IEEE Std 1362-1998, IEEE Guide for Information TechnologySystem Definition—Concept of Operations (ConOps) Document
IEEE 802.1Qbb-D2.2 和802.3bd-D2.0动态
1在2010年5月22日前,IEEE 802.1Qbb-D2.2 和802.3bd-D2.0将完成投票。
这两个文档都是关于在802点到点全双工DCB网络中增加基于优先级的流控功能的最新标准。
在802.3bd中主要变化是向MACCControlEntity里增加了aPFCEnableStaus。
802.1Qbb变化就比较多了。基于优先级流控,即Priority-based Flow Control ,简称PFC。
增加对下列标准的引用:
IEEE Std 802.1AE: Media Access Control (MAC) Security
IEEE Std 802.1Qaz: Enhanced Transmission Selection for Bandwidth Sharing Between Traffic Classes
IEEE Std 802.3bd: MAC Control Frame for Priority-based Flow Control
增加了下列定义
3.1 bit time: The duration of one bit as transferred to and from the Media Access Control (MAC). The bit time is the reciprocal of the bit rate.
3.2 Paused state: A state of a queue in which the transmission selection entity does not select frames from the queue.
3.3 Data center environment: A domain controlled by the Data Center Bridging eXchange protocol (DCBX, see IEEE Std 802.1Qaz clause 38).
增加了缩略语定义
DCBX Data Center Bridging eXchange protocol
PFC Priority-based Flow Control
TLV Type, Length, Value
其他很多详细变化就不一一列举,请下载最新版相关协议阅读。(注意MIB也有变化)
朱文昊点评:在增加了基于优先级流控的系统中,可以提高关键业务的QoS,改善用户体验,不论对大型应用还是家庭应用,都将会带来很多好处。
IEEE P1547.8 标准提升智能电网性能
0Draft standard provides common technical platform, addresses emerging energy storage challenges in distributed
power generation, Smart Grid industries
IEEE, the world’s leading professional association for the advancement of technology today announced IEEE P1547.8,
a draft standard establishing a common technical platform for distributed resources interconnection applications. The
proposed standard expands upon IEEE 1547, while incorporating industry and National Institute of Standards and
Technology (NIST) recommendations for improved interconnection performance functionality. It also addresses energy
storage challenges coming into play across the distributed resources and Smart Grid industries. Ratification of IEEE P1547.8,
which is sponsored by the IEEE Standards Coordinating Committee 21 (SCC21), is targeted for calendar year 2012.
As a complement to the IEEE 1547 standard, IEEE P1547.8 establishes a common technical platform to address functionality
for the interconnection of distributed resources across the power grid. The standard provides greater support for intermittent
renewable energy sources, and more flexible use of inverters such as found in home solar power systems, enabling easier
and more robust connections to the grid. It also addresses energy storage devices, hybrid generation-storage systems
(ES-DER), and ES-DER aspects of plug-in electric vehicles (PEV), as well as taking into account a variety of industry-driven
recommendations. IEEE P1547.8 is targeted to distributed resource owners, interconnection contractors, equipment
manufacturers, system integrators, area electric power system owners, planners and operators, and regulatory agencies.
In August 2009, NIST established an initial set of priority actions plans (PAPs) for developing standards necessary to build
an interoperable Smart Grid. IEEE P1547.8 will support NIST PAP07 Energy Storage Interconnection Guidelines.
IEEE has more than 100 standards and standards in development relevant to smart grid, including the over 20 IEEE standards
named in the NIST Framework and Roadmap for Smart Grid Interoperability Standards.
For more information on IEEE P1547.8, please visit http://ieeestandards.org/ct.html?rtr=on&s=8nv,1e16q,2xny,kijn,m7pr,gxzm,3xa8
For more information about IEEE’s leadership role in Smart Grid technology development, please visit the IEEE Smart Grid
Web Portal at http://ieeestandards.org/ct.html?rtr=on&s=8nv,1e16q,2xny,c8zn,5dek,gxzm,3xa8
To view the complete article, please visit: http://standards.ieee.org/announcements/2010/P15478.html
IEEE P802.16m标准即将结束投票
0关于P802.16m标准
标题: IEEE本地和城域网标准 – 第16部分: 固定和移动宽带无线接入系统的空接口 – 修正案: 高级空接口
Title: IEEE Standard for Local and Metropolitan Area Networks – Part 16: Air Interface for Fixed and Mobile Broadband Wireless Access Systems – Amendment: Advanced Air Interface
Scope: This standard amends the IEEE 802.16 WirelessMAN-OFDMA specification to provide an advanced air interface for operation in licensed bands. It meets the cellular layer requirements of IMT-Advanced next generation mobile networks. This amendment provides continuing support for legacy WirelessMAN-OFDMA equipment.
Purpose: The purpose of this standard is to provide performance improvements necessary to support future advanced services and applications, such as those described by the ITU in Report ITU-R M.2072.
该项投票2010年7月9日结束.
有需要该标准文本或那个ITU2072报告的同行可以联系我.