وایمکس یکی از استانداردهای شبکه بی سیم در زمینه دسترسی کاربران به ارتباطی سریع و مطمئن می باشد.

این نام از حروف Worldwide Interoperability for Microwave Access گرفته شده است. WiMAX در آینده بسیار نزدیک اینترنت را در کنار شبکه های مخابراتی قرار خواهد داد و چنان انقلابی را در این زمینه به وجود خواهد آورد که روشن کردن اکثر کامپیوتر های قابل حمل و خانگی مساوی با اتصال آنها به اینترنت باشد.
این استاندارد از طرف IEEE معتبر شناخته شده و پروتکل 802.16 از طرف این سازمان به آن اختصاص یافته است. در ادامه با ISG همراه باشید.از نظر استفاده از امواج مایکروویو برای دسترسی مستقیم کاربران به اینترنت تا حدود زیادی شبیه WiFi است، با این تفاوت که سرعت آن بسیار بالاتر و برد آن به طور چشمگیری وسیع تر است به طوری که سرعت آن را می توان با خطوط پرسرعت با پهنای باند وسیع ( نظیر T3 و DSL) و برد امواج آن را با سرویس تلفن همراه مقایسه کرد.
از نظر فراگیری شبکه نیز با هیچ کدام از مقیاس های شناخته شده شبکه قابل مقایسه نیست و حتی از مقیاس MAN که برای شبکه های شهری به کار می رود و در حال حاضر بزرگترین مقیاس شبکه های یکپارچه است هم به مراتب وسیع تر است.
این سیستم از دو بخش کلی تشکیل می شود :
WiMAX BTS که بیشترین شباهت را به BTS های مخابراتی دارد.
گیرنده WiMAX شامل آنتن گیرنده امواج مایکروویو که میتواند بر حسب موقعیت گیرنده از یک قطعه کوچک گیرنده WiFi در یک لب تاپ تا گیرنده فرستنده داخلی در یک اداره متفاوت باشد.
WiMAX BTS می تواند به طور مستقیم و با یک پهنای باند بالا ( مثلا خط T3 ) با اینترنت در ارتباط باشد و امواج را به کاربران و یا BTS بعدی انتقال دهد.
با توجه به گستره بالای هر BTS با ایجاد BTS های متعدد در انتهای محدوده تحت پوشش یک BTS دیگر، میتوان محدوده قابل توجهی را (مشابه با سیستم تلفن همراه غیر ماهواره ای ) تحت پوشش قرار داد.
سرویس های قابل ارائه بر روی بستر شبکه WiMAX :
بر روی بستر شبکه بی سیم امکان ایجاد اینترنت پر سرعت شبکه های VPN, VoIP و سرویس های Video Conferencing , E-learning , E-banking و Video on Demand میسر می باشد.
شبکه VPN مبتنی بر فناوری WiMAX :
VPN یا همان Virtual Private Network نوعی از پیکربندی های شبکه است که به دلیل امنیت فوق العاده بالاتری که نسبت به دیگر توپولوژی های شبکه های کامپیوتری دارد با استقبال بی نظیری مواجه شده است.
VPN در حقیقت با ایجاد یک تونل اختصاصی میان فرستنده و گیرنده اطلاعات ، امکان دسترسی کاربران متفرقه به اطلاعات مبادله شده در شبکه را از میان می برد. VPN هر چند بسته اطلاعاتی را به صورت کپسولی در آورده و ارسال می نماید که این کار سبب میشود داده ها درحین پروسه ارسال برای کاربران متفرقه به هیچ عنوان قابل دسترسی نباشند و امنیت داده ها را تا پایان این پروسه تضمین میکند .
VPN شبکه ای است کاملا ایده آل برای سازمان ها و شرکت هایی با تعداد شعبات بالا و پراکنده که برای آنها امنیت داده ها در حین پروسه ارسال و دریافت مهمترین نکته به شمار میرود.

انواع شبکه VPN قابل ارائه توسط شرکت لایزر :
IP VPN
MPLS VPN
Layer2 VPN
Layer3 VPN
VOD مبتنی بر فناوری WiMAX :
Video on Demand یا به اختصار VOD سرویس پخش ویدیو و فایل های تصویری بر روی بستر IP می باشد که کاربرد آن در پخش برنامه های تلویزیونی ، پخش زنده همایش ها ، کنفرانس ها و یا مسابقات ورزشی می باشد. در این سرویس محتوا از طریق دریافت کننده های ماهواره ای، دریافت کننده های تلویزیونی و یا دوربین های تلویزیونی دریافت و از طریق دستگاه ها یا کارتهای PCI و AGP وارد سیستم میشود و بوسیله سرورهای Encoding به یکی از استانداردهای قابل پشتیبانی توسط سیستم تبدیل، فشرده و آماده پخش میشود.
شبکه LAN to LAN مبتنی بر WiMAX :
یکی دیگر از امکانات بی نظیر فناوری WiMAX استفاده از این فناوری در شبکه های LAN to LAN است. شبکه LAN to LAN مبتنی بر این فناوری اتصال پرسرعت دو یا چند شبکه LAN را به صورت FULL – MESH امکان پذیر می سازد بدین صورت که دو یا چند شبکه LAN با هر نوع سرویس ارتباطی میتوانند با استفاده از فناوری WiMAX ارتباطی ایمن و پرسرعت با یکدیگر داشته باشند.
به عنوان مثال کارمندان یک سازمان یا ارگان بزرگ میتوانند با استفاده از این فناوری در منزل خود نیز به سازمان یا ارگان خود مرتبط باشند و یا از سرویس اینترنت پر سرعت آن استفاده کنند.
کنفرانس ویدئویی Video Conferencing :
در یک تعریف ساده و اولیه می توان گفت Video Conferencing یعنی امکان برقراری ارتباط بین دو یا چند مکان داخل شهری ، بین شهری ، بین کشوری و یا ترکیبی از آنها به نحوی که در هر مکان شخص یا گروه شرکت کننده در کنفرانس بتواند صدا ، تصویر ، اطلاعات دیجیتال و مدارک کاغذی (مستندات ، نقشه ها و … ) اشخاص و گروه های دیگر شرکت کننده در کنفرانس را بشنوند و ببینند.

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