fa تبیین دقیق الزامات هر سرویس از نظر نرخ داده، تأخیر، قابلیت اطمینان و انعطاف‌پذیری در تخصیص منابع و کیفیت خدمات تخصصي Special پژوهشي Research <span style="font-size:12pt"><span style="direction:rtl"><span style="unicode-bidi:embed"><span new="" roman="" style="font-family:" times=""><span b="" lang="AR-SA" mitra="" style="font-family:">در سال‌ها</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:"> اخ</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:">ر، شاهد </span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:">ک دگرگون</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:"> بن</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:">اد</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:">ن در حوزه فناور</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی‌</span><span b="" lang="AR-SA" mitra="" style="font-family:">ها</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:"> ارتباط</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:"> بوده‌ا</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:">م. پ</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:">شرفت‌ها</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:"> سر</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:">ع در صنعت ارتباطات ب</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی‌</span><span b="" lang="AR-SA" mitra="" style="font-family:">س</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:">م و ظهور شبکه‌ها</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:"> موبا</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:">ل نسل پنجم</span> (5G) <span b="" lang="AR-SA" mitra="" style="font-family:">موجب شده است که انتظارات کاربران از خدمات ارتباط</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:"> به طرز قابل‌توجه</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:"> افزا</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:">ش </span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:">ابد. تقاضا برا</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:"> دست</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:">اب</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:"> به نرخ داده‌ها</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:"> بس</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:">ار بالا ، تأخ</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:">ر بس</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:">ار کم</span><span b="" lang="AR-SA" mitra="" style="font-family:">&nbsp;و قابل</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:">ت اطم</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:">نان نزد</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:">ک به صددرصد</span> <span b="" lang="AR-SA" mitra="" style="font-family:">در بستر شبکه‌ها</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:"> س</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:">ار، انگ</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:">زه اصل</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:"> برا</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:"> تکامل س</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:">ستم‌ها</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:"> ارتباط</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:"> از نسل چهارم به نسل پنجم بوده است. اتحاد</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:">ه ب</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:">ن‌الملل</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:"> مخابرات</span> (ITU) <span b="" lang="AR-SA" mitra="" style="font-family:">برا</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:"> نسل پنجم سه دسته خدمات اصل</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:"> تعر</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:">ف کرده است که عبارت‌اند از</span>:<span lang="FA" style="font-family:"B Mitra""></span></span></span></span></span><br> <span style="font-size:12pt"><span style="direction:rtl"><span style="unicode-bidi:embed"><span new="" roman="" style="font-family:" times=""><span b="" lang="FA" mitra="" style="font-family:">۱</span><span b="" lang="FA" mitra="" style="font-family:">- پهنا</span><span b="" lang="FA" mitra="" style="font-family:">ی</span><span b="" lang="FA" mitra="" style="font-family:"> باند موبا</span><span b="" lang="FA" mitra="" style="font-family:">ی</span><span b="" lang="FA" mitra="" style="font-family:">ل پ</span><span b="" lang="FA" mitra="" style="font-family:">ی</span><span b="" lang="FA" mitra="" style="font-family:">شرفته (</span>eMBB<span b="" lang="FA" mitra="" style="font-family:">)</span></span></span></span></span><br> <span style="font-size:12pt"><span style="direction:rtl"><span style="unicode-bidi:embed"><span new="" roman="" style="font-family:" times=""><span b="" lang="FA" mitra="" style="font-family:">۲</span><span b="" lang="FA" mitra="" style="font-family:">- ارتباط با تأخ</span><span b="" lang="FA" mitra="" style="font-family:">ی</span><span b="" lang="FA" mitra="" style="font-family:">ر کم و قابل</span><span b="" lang="FA" mitra="" style="font-family:">ی</span><span b="" lang="FA" mitra="" style="font-family:">ت اطم</span><span b="" lang="FA" mitra="" style="font-family:">ی</span><span b="" lang="FA" mitra="" style="font-family:">نان بالا (</span>URLLC<span b="" lang="FA" mitra="" style="font-family:">)</span></span></span></span></span><br> <span style="font-size:12pt"><span style="direction:rtl"><span style="unicode-bidi:embed"><span new="" roman="" style="font-family:" times=""><span b="" lang="FA" mitra="" style="font-family:">۳</span><span b="" lang="FA" mitra="" style="font-family:">- ارتباطات نوع ماش</span><span b="" lang="FA" mitra="" style="font-family:">ی</span><span b="" lang="FA" mitra="" style="font-family:">ن عظ</span><span b="" lang="FA" mitra="" style="font-family:">ی</span><span b="" lang="FA" mitra="" style="font-family:">م (</span>mMTC<span b="" lang="FA" mitra="" style="font-family:">)</span></span></span></span></span><br> <span style="font-size:12pt"><span style="direction:rtl"><span style="unicode-bidi:embed"><span new="" roman="" style="font-family:" times=""><span b="" lang="AR-SA" mitra="" style="font-family:">هر سه دسته خدمات فوق اهداف و ن</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:">ازمند</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی‌</span><span b="" lang="AR-SA" mitra="" style="font-family:">ها</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:"> کل</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:">د</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:"> متفاوت</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:"> را دنبال م</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی‌</span><span b="" lang="AR-SA" mitra="" style="font-family:">کنند و طراح</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:"> بستر شبکه </span><span b="" lang="FA" mitra="" style="font-family:">نسل پنجم</span> <span b="" lang="AR-SA" mitra="" style="font-family:">با چشم‌انداز</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:"> بلندمدت، معطوف به پشت</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:">بان</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:"> هم‌زمان و هم‌ز</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:">ست</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span> <span b="" lang="AR-SA" mitra="" style="font-family:">ا</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:">ن سه سرو</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:">س تحت </span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:">ک چارچوب واحد بوده است. در ا</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:">ن تحق</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:">ق جا</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:">گاه خدمات</span> URLLC <span b="" lang="AR-SA" mitra="" style="font-family:">و</span> eMBB <span b="" lang="AR-SA" mitra="" style="font-family:">را در معمار</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:"> شبکه نسل پنجم تشر</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:">ح کرد</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:">م، سپس چالش‌ها و موانع</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:"> که پ</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:">اده‌ساز</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:"> هم‌زمان ا</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:">ن دو سرو</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:">س کل</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:">د</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:"> پ</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:">شرو</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:"> ما قرار م</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی‌</span><span b="" lang="AR-SA" mitra="" style="font-family:">دهد مورد بررس</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:"> قرار خواهد گرفت. سپس طرح مسئله، اهداف تحق</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:">ق، سؤالات پژوهش، و ن</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:">ز پ</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:">ش</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:">نه تحق</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:">ق به‌تفص</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:">ل ب</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:">ان شد. تلاش بر آن است تا ا</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:">ن فصل، درک جامع</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:"> را از الزامات سرو</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:">س‌ها</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:"> حساس به تأخ</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:">ر و قابل</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:">ت اطم</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:">نان</span> <span b="" lang="AR-SA" mitra="" style="font-family:">(</span>URLLC<span b="" lang="AR-SA" mitra="" style="font-family:">)</span> <span b="" lang="AR-SA" mitra="" style="font-family:">و ن</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:">ز ن</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:">ازمند</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی‌</span><span b="" lang="AR-SA" mitra="" style="font-family:">ها</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:"> سرو</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:">س‌ها</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:"> ظرف</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:">ت</span> <span b="" lang="AR-SA" mitra="" style="font-family:">محور</span> (eMBB) <span b="" lang="AR-SA" mitra="" style="font-family:">به خواننده ارائه دهد، و در نها</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:">ت، خلأ پژوهش</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:"> و ضرورت پرداختن به رو</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:">کردها</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:"> جد</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:">د همچون ترک</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:">ب روش‌ها</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:"> پانچ</span> <span b="" lang="AR-SA" mitra="" style="font-family:">و برهم‌نه</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:"> برا</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:"> زمان‌بند</span><span b="" lang="AR-SA" mitra="" style="font-family:">ی</span><span b="" lang="AR-SA" mitra="" style="font-family:"> مشترک در بستر 5G&nbsp;</span><span b="" lang="AR-SA" mitra="" style="font-family:">را آشکار سازد</span>.<span lang="AR-SA" style="font-family:"B Mitra""></span></span></span></span></span><br> &nbsp; In recent years, we have witnessed a fundamental transformation in the field of communication technologies. Rapid advances in the wireless communications industry and the emergence of fifth-generation (5G) mobile networks have led to a significant increase in user expectations of communication services. The demand for very high data rates, very low latency, and near-100% reliability in mobile networks has been the main driver for the evolution of communication systems from fourth generation to fifth generation.The International Telecommunication :union: (ITU) has defined three main service categories for the 5G, which are:<br> 1- Enhanced Mobile Broadband (eMBB)<br> 2- High Reliability Low Latency Communication (URLLC)<br> 3- Massive Machine Type Communication (mMTC)<br> All three service categories above pursue different key goals and requirements, and the design of the 5G network platform with a long-term perspective has been focused on the simultaneous support and coexistence of these three services under a single framework. In this study, we described the position of URLLC and eMBB services in the 5G network architecture, then the challenges and obstacles that the simultaneous implementation of these two key services poses to us will be examined. Then, the problem statement, research objectives, research questions, and research background were explained in detail.This chapter aims to provide the reader with a comprehensive understanding of the requirements of reliability and latency-sensitive services (URLLC) as well as the requirements of capacity-based services (eMBB), and finally, to reveal the research gap and the necessity to address new approaches such as combining punching and superposition methods for joint scheduling in the 5G context ,پانچ و برهم‌نهی,کاهش تأخیر,افزایش قابلیت اطمینان ,Punch and overlay,reduce latency,increase reliability 60 67 http://iem-science.ir/browse.php?a_code=A-10-26-28&slc_lang=fa&sid=1 Maria Shahbazi ماریا شهبازی mariashahbaziii@gmail.com 1003194753284600323 1003194753284600323 Yes Department of Electrical Engineering, Telecommunication Systems, Semnan University, Semnan, Iran گروه مهندسی برق، گرایش مخابرات سیستم، دانشگاه سمنان، سمنان، ایران