在线座谈

热门关键字: ATM CTI 3D打印 矢量控制 

关于本次座谈

座谈简介

本研讨会将简要介绍企业级WLAN市场趋势,还将讨论面向802.11ac接入点的CPU处理需求以及如何基于性能(工作负载、利用率和吞吐量)、功率和成本来选择适当的处理器。本研讨会将演示高性能的开放源OpenWRT交钥匙解决方案,这是来自飞思卡尔市场解决方案实验室的市场就绪型企业级接入点解决方案,能够在多个不同的QorIQ器件之间进行扩展和移动。

专家介绍

張嘉恆 張嘉恆
飞思卡尔数字网络产品部应用工程师
張嘉恆先生 (Johan Chang)是飞思卡尔数字网络产品部应用工程师,负责多种数字网络产品,包括PowerQUICC和QorIQ系列,为客户提供个别产品的特定技术支持和针对各个细分市场的应用程序专案,包括网络安全,网络存储,无线局域网解决方案的部署。自2006年以来,張嘉恆一直参与促进企业接入点解决方案,与市场上主要的Wi-Fi基带解决方案供应商紧密合作。

精彩问答

[ 最近 10 条问答 ] [ 全部发言 ]
[问:youzizhile] wlan最大可以达到多大的通信速率? 
[答:johnchang] 目前P1020-800Mhz平台可達道近1100Mbps 11ac+11n TCP throughput  [2013-1-22 11:10:02]
[问:reporter] 如何获取所有相关的飞思卡尔设计文档? 
[答:markcheng] 請上http://www.freescale.com/webapp/sps/site/homepage.jsp?code=QORIQ_HOME, 選擇型號, 在文件視窗內, 有許多文件可下載  [2013-1-22 11:12:41]
[问:qqwwd] 企业级的WLAN接入点符合工业级标准码? 
[答:johnchang] QorIQ P1 系列均支持工業規格 extended temperature support  [2013-1-22 11:12:59]
[问:wypzwc] 请问:802.11n   802.11a   802.11b   有什么根本性的区别? 
[答:markcheng] 802.11aModulation Scheme OFDM Data Rate 6,9,12,18,24,36,48,54 Mbps RF Carrier 5GHzBandwidth 20MHzDistance covered(appox.)- 35m(indoor),120m(outdoor) 802.11bModulation scheme DSSS/CCKData rate 1,2,5.5 and 11 MbpsRF Carrier 2.4GhzDistance covered(appox.)- 38m(indoor),140m(outdoor) 802.11nModulation Scheme OFDM and DSSS/CCKIt supports legacy fallbacks of 11a/11b/11g systemsBandwidth 20MHz and 40MHzData rate -As per 11a/11b/11g.-It supports upto about 72Mbps for 20MHz bandwidth with multiple antennas-It supports upto about 150Mbps for 40MHz bandwidth with multiple antennasDistance covered(appox.)- (indoor),250m(outdoor)MIMO configuration -Most of the devices uses 2T3R(2 antennas in transmit and 3 antennas in receive),Maximum configuration goes upto 4T4R.  [2013-1-22 11:15:51]
[问:myqiangqiang] 1:企业级802.11ac WLAN接入点和以往的802.11有什么不同? 2:企业级802.11ac WLAN接入点MCU需要支持哪些协议和哪些接口?  
[答:johnchang] 1) 11ac 支持更高的硬體帶寬2) PCIe and GMAC and securityCAPWAP protocol  [2013-1-22 11:16:47]
[问:xzyang] P1020WLAN开发资料在网站上有没有下载? 
[答:johnchang] http://www.freescale.com/webapp/sps/site/prod_summary.jsp?code=P1020&nodeId=018rH325E4017B&fpsp=1&tab=Design_Tools_Tab http://www.freescale.com/webapp/sps/site/prod_summary.jsp?code=SDKLINUX&fsrch=1  [2013-1-22 11:17:58]
[问:reporter] 飞思卡尔是如何支持Atheros和Broadcom的wi-fi解决方案的? 
[答:markcheng] 我們有展示板整合Atheros 或 Broadcom Wifi 解决方案, 你可跟Freescale FAE詢問, 看展示以及了解整合軟件.  [2013-1-22 11:20:34]
[问:烟雨醉斜阳] SDK和Wifi是怎样联系在一起的呢? 
[答:johnchang] SDK 提供Linux環境及應用範例開發人員須porting WLAN driver into SDK (freescale supports updated driver patch in most of the cases).  [2013-1-22 11:21:03]
[问:烟雨醉斜阳] SDK上的优化处理和ASF的机制相同吗? 
[答:johnchang] ASF is provided in SDK as an optimization example. Users can extend the coverage to their own application.  [2013-1-22 11:22:25]
[问:reporter] QorIQ平台能够支持的最大DRAM是多大? 
[答:markcheng] 以p2020為例, 它可以支援到32G Bytes  [2013-1-22 11:23:57]
[问:am_yuyang] 无线透传模块性能如何? 
[答:johnchang] It depends on the PA and the antennas used on the product. 11ac has a better wireless coverage than 11n. For detailed information you need to go to WLAN vender like Atheros.  [2013-1-22 11:24:42]
[问:xzyang] 开发平台有卖吗? 
[答:johnchang] please see P1020RDB in the following link. you can also search for P1020WLAN board. our WLAN demo runs on both boards. http://www.freescale.com/webapp/sps/site/prod_summary.jsp?code=P1020RDB&fsrch=1  [2013-1-22 11:26:04]
[问:reporter] 闪存器件能支持的最大容量是多大? 
[答:markcheng] 以p2020為例, 理論上, NOR闪存器可以支援從32Kbytes 到 4 Gbytes. NAND 闪存器支援每頁512B和2048B規格.  [2013-1-22 11:28:55]
[问:烟雨醉斜阳] Ipv4和Ipv6有什么区别吗?在使用ASF时有什么不同吗? 
[答:johnchang] Current ASF mode supports only IPv4 acceleration. All the IPv6 packets will be forward to standard linux stack for processing at this point. We expect to extend our ASF support on IPv6 later.  [2013-1-22 11:29:01]
[问:项目开发] 请问下可以送个样品我们学习下,以供今后的项目打一下基础 
[答:johnchang] 建議連絡freescale本地支持我們可安排拜訪Please contact Kenny Liu, local marketing, B06095@freescale.com, 8610-5879-8040  [2013-1-22 11:33:00]
[主持人:ChinaECNet] 各位网友,刚刚大家收看到的是【专家演讲】部分,现在进行的是【QA阶段】欢迎大家踊跃提问!  [2013-1-22 11:33:11]
[主持人:ChinaECNet] 各位网友,11点40我们将有一份调查问卷,请大家花一分钟时间填写一下,谢谢大家的支持!  [2013-1-22 11:34:15]
[问:zekifan] 对于您提到的“1个11ac需要1300DMIPS”,这时的11ac速率是多少?数据报文的尺寸是多少?谢谢 
[答:johnchang] 990Mbps in 11ac single-band UDP (line rate). IxChariot runs in standard 1.3K frame. Thanks.  [2013-1-22 11:35:10]
[问:lijianshe] 演讲非常精彩,谢谢! 
[答:johnchang] Appreciate to attend the training!  [2013-1-22 11:35:33]
[问:reporter] 本地总线所支持的地址范围是什么? 
[答:markcheng] 以p2020為例, 本地总线所支持的地址是可調變的, 在32位元物理地址線時, 可設定為0xf000-0000, 在36位元物理地址線時, 可設定為0xf-f000-0000. 它的範圍也是可調變的,就看系統的需要值而定.  [2013-1-22 11:37:11]
[问:jackson2005] TCP/IP所需频宽约为UDP所需频宽多少倍? 
[答:markcheng] 在wifi測試中, UDP 得到1000Mbps帶寬, TCP 可得到約800Mbps  [2013-1-22 11:40:00]
[问:jackson2005] 802.11ac不支持multi-user.若有多个user接入,每个user频宽会如何变化? 
[答:johnchang] 尚未詳細評估 multi-user mode 效能建議洽詢 WLAN vender  [2013-1-22 11:40:09]
[问:reporter] 如何获取Atheros和Broadcom的democode? 
[答:johnchang] freescale currently provides binary WLAN application benchmarking demo package.  [2013-1-22 11:41:31]
[问:liang-1011] 是否同时支持Ipv4和Ipv6 
[答:johnchang] We support both IPv4 and IPv6 stacks from SDK v1.3, kernel-3.0.34  [2013-1-22 11:42:16]
[问:liang-1011] 谢谢专家的精彩讲解。 
[答:johnchang] thank you for attending!  [2013-1-22 11:42:32]
[问:reporter] 如何获取飞思卡尔的SDK和OpenWRT软件? 
[答:markcheng] Freescale SDK 可從Freescale 官方網站下載, http://www.freescale.com/webapp/sps/site/prod_summary.jsp?code=SDKLINUX. OpenWRT 請洽Freescale 本地支持團隊  [2013-1-22 11:43:39]
[问:zwjiang] KinetisX系列什么时候上市?在哪下载资料? 
[答:johnchang] http://www.freescale.com/webapp/sps/site/homepage.jsp?code=KINETIS Please contact freescale local support for more detailed information  [2013-1-22 11:43:54]
[问:mmjie85] 大家好,我对双频非常感兴趣,感谢Johan的演讲。希望了解后面双频的发展趋势。感谢 
[答:johnchang] Thank you! Please contact our local marketing for more technical discussion. Kenny Liu, 861058798040  [2013-1-22 11:45:22]
[主持人:ChinaECNet] 各位网友,会后我们将把本次座谈制作成回放,方便大家随时观看专家演讲和精彩问答部分,请大家随时关注中电网在线座谈板块本次座谈的更新!  [2013-1-22 11:46:14]
[问:mon200] 探讨的问题有深度、广度并非常有新意,值得参加和学习! 
[答:markcheng] 謝謝你的稱讚, 我們會更努力! 也謝謝您的參加!  [2013-1-22 11:46:30]
[问:reporter] 飞思卡尔平台目前还支持哪些其他的应用? 
[答:johnchang] UTM network security, SDN switch, Storage, Wireless switch, 3G/LTE network, WOC, ADC...  [2013-1-22 11:46:42]
[问:juyunfeng] 价格怎么样?性能很好,价格很高的话就难办了! 
[答:johnchang] We are very willing to have a business related discussion with you. Actually our P1010 device has been adopted by several China big names on WLAN application. Please contact our local marketing, Kenny Liu, 861058798040  [2013-1-22 11:48:39]
[问:foxgan] P1010是否能同时支持11ac与智能天线的应用 
[答:johnchang] It is very possible, actually we have several customers who are designing in this field (smart antennas). Please contact our local marketing, Kenny Liu, 861058798040  [2013-1-22 11:50:15]
[问:foxgan] 11ac的速率达到1.3Gbps,电脑的有限端口只有1G,怎么测试? 
[答:johnchang] Actual WLAN data throughput can not reach this high (1300Mbps). If the total data throughput is indeed exceeding 1000Mbps line rate, we can use ethernet bonding mode for testing.  [2013-1-22 11:52:11]
[主持人:ChinaECNet] 各位网友,座谈还有几分钟就要结束了,还没有来得及回答的问题,我们将更新到本次座谈的页面,请大家随时关注中电网的更新!谢谢大家的参与!  [2013-1-22 11:53:15]
[问:dwwzl] 非常期待能够提供测试模块? 
[答:johnchang] Thank you. 敬請連絡 Freescale local marketing, Kenny Liu, 861058798040 我們將安排客戶拜訪  [2013-1-22 11:54:16]
[问:SUNDONGXING] 請問P1011或P1020,是怎樣關閉ALE?有否軟件關閉ALE功能?還是要硬件關閉? 
[答:markcheng] 請問ALE是指Address Latch Enable? 還是其他定義.  [2013-1-22 11:54:26]
[问:foxgan] P1015SDK是否支持broadcom的无线PHY 
[答:johnchang] Thank you for the question. P1015 is able to support broadcom WLAN module through PCIe socket.  [2013-1-22 11:55:20]
[问:qqwwd] 你说到11ac不支持Multi-user模式,在多用户连接的情况下,total速率是递减的,是怎样递减的? 
[答:johnchang] Thank you for the question. suggest to seek WLAN vender support for this question. WLAN venders like Atheros/Broadcom will have better analysis on this...   [2013-1-22 11:57:38]
[主持人:ChinaECNet] 各位网友,座谈马上就要结束了,感谢大家的参与,我们下次再见!  [2013-1-22 11:59:59]
[问:jackson2005] 有符合工规的产品? 
[答:markcheng] 有, 可查閱產品規格書(像P2020EC) 以p2020為例, 料號P2020NXE2KHC. X 碼就是代表工規產品.  [2013-1-22 12:02:32]
[问:iwqtthf] 有哪些优势? 
[答:johnchang] Thank you for the question. In general, QorIQ family has a much better processing power and much lower power consumption. We are willing to discuss with you in more detail. Please contact our Local marketing Kenny Liu, 861058798040  [2013-1-22 12:11:20]
[问:jackson2005] P2020+BCM56520可由QorIQDPAAsolution取代.但成本有优势?还有何优点? 
[答:johnchang] Thank you for the questions. We believe our single chip solution has a better price offering than chipset solution. Also single chip solution has a easier software programming model than chipset solution. Last, our Soc includes many hardware acceleration engines to better optimize application performance, especially on dat path.  [2013-1-22 12:16:58]
[问:luoqiwen] 1)此系列的CPU,在针对无线业务上硬件有何特点,能满足高性能的需求? 2)软件优化方面,frescale做了什么工作? 3)针对于linux操作系统,这些特性是否已经正常工作? 4)企业级产品,射频指标的要求会有所增加,freescale方面是否有投入研发,还是纯粹依赖于无线模块提供商的能力? 5)之前的一段时间,freescale的linux SDK不太友好, 
[答:markcheng] 1. 低功耗, CPU Dhrystone MIPS 高. 2. Networking data path optimization(ASF) 优化 3. 在展示機上, Linux 已完全正常工作.4. 在無線射頻方面, 必需尋求无线模块提供商的協助5. Freescale SDK v1.3有很多的改進.  [2013-1-22 12:18:17]
[问:唐朝科技] 1.是否可快速应用?2.反应速度、精度、稳定性、可靠性及效率和能耗?3.应用成本,供货延续性? 
[答:johnchang] 1) we have close to turnkey ready demo package for customer evaluation. 2) The demo has been testing by many customers since last year. It is nothing new to the market. 3) all of our products has an at least 10-year long term support. We are will to discuss with you in business term. Please contact our Local marketing Kenny Liu, 861058798040  [2013-1-22 12:19:33]
[ 最近 10 条问答 ] [ 全部发言 ]
  关于飞思卡尔  

飞思卡尔半导体(NYSE:FSL)是嵌入式处理解决方案的全球领导者,提供业界领先的产品,不断提升汽车、消费电子、工业和网络市场。我们的技术从微处理器和微控制器到传感器、模拟集成电路和连接,它们是我们不断创新的基础,也使我们的世界更环保、更安全、更健康以及连接更紧密。我们的一些主要应用和终端市场包括汽车安全、混合动力和全电动汽车、下一代无线基础设施、智能能源管理、便携式医疗器件、消费电器以及智能移动器件等。公司总部位于德克萨斯州奥斯汀市,在全世界拥有多家设计、研发、制造和销售机构。