HW4

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Texas A&M University *

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621

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Electrical Engineering

Date

Dec 6, 2023

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pdf

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9

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+*)(+*3N !°± 2Mobile Wireless 3Networking SUBMITTED BY 99)1// 88550.1//::0. 66554221//99-+::::?? + &&##&$%+ $ Texas A ± M University° College Station Home work ²
Please submit your finished homework ²typed in using computers³ to YtDRmZuJFJSn'#"DLRmDNQl±FToRm by ±´% $% ´´ pm )(8S9T on 3November !µ °´°¶ after signing the following 'ggie -onor )(ode% ³An Aggie does not lie° cheat or steal° or tolerate those who do´³ Nameµ Sai Rohith Polisetty UINµ ¶··¸¸·¹º¶ Please answer the following questionsµ »¹¼ What is the definition for the ½G traffic type of the mURLLC and what are the major QoS metrics requirements imposed by the mURLLC ½G wireless traffics? T85//& ±THZZP]L 8S[YH²5LSPHISL HUK /V^²/H[LUJ` &VTT\UPJH[PVUZ³ PZ H ´* [YHMMPJ [`WL [OH[ YLX\PYLZ L_[YLTLS` SV^ SH[LUJ` HUK OPNO YLSPHIPSP[`µ ,[ PZ PU[LUKLK MVY TPZZPVU²JYP[PJHS HWWSPJH[PVUZ Z\JO HZ H\[VUVTV\Z KYP]PUN¶ YLTV[L Z\YNLY`¶ HUK PUK\Z[YPHS JVU[YVSµ 7OL THQVY 4V6 TL[YPJZ YLX\PYLTLU[Z PTWVZLK I` [OL T85//& ´* ^PYLSLZZ [YHMMPJZ HYL " \S[YH²SV^ SH[LUJ`¶ \S[YH OPNO YLSPHIPSP[` HUK QP[[LY TPUPTPaH[PVU 9PY[\HS 5LHSP[` ±95³¶ 0L[H]LYZL¶ HUK 'PNP[HS 7^PU ±'7³ [LJOUVSVNPLZ YLX\PYL L_[YLTLS` SV^ SH[LUJ`¶ OPNO YLSPHIPSP[`¶ HUK THZZP]L JVUULJ[P]P[`µ T85//& JHU WYV]PKL LUK²[V²LUK SH[LUJ` VM SLZZ [OHU · TPSSPZLJVUK HUK YLSPHIPSP[` VM !!µ!!!¸ VY OPNOLY¶ THRPUN P[ PKLHS MVY 95¶ 0L[H]LYZL¶ HUK '7 HWWSPJH[PVUZµ T85//& JHU IL \ZLK [V WYV]PKL H PTTLYZP]L 95 L_WLYPLUJL I` YLK\JPUN SH[LUJ` HUK QP[[LYµ 7OPZ JHU IL JYP[PJHS MVY HWWSPJH[PVUZ Z\JO HZ 95 NHTPUN HUK [YHPUPUNµ T85//& JHU IL \ZLK [V LUHISL YLHS²[PTL PU[LYHJ[PVUZ HUK L_WLYPLUJLZ PU [OL 0L[H]LYZLµ T85//& JHU IL \ZLK [V JYLH[L OPNOS` HJJ\YH[L HUK \W²[V²KH[L KPNP[HS [^PUZ VM YLHS²^VYSK Z`Z[LTZµ »º¼ Explain why the mURLLC traffic types and techniques play important roles in implementing the Virtual Reality »VR¼° Metaverse° and Digital Twin »DT¼ ½G wireless techniques? »·¼ Define the cross¾layer design and optimization wireless techniques and what are the motivations for developing the cross¾layer design and optimization wireless techniques?
&YVZZ²SH`LY KLZPNU HUK VW[PTPaH[PVU ±&/'2³ [LJOUPX\LZ [`WPJHSS` PU]VS]L ZOHYPUN PUMVYTH[PVU IL[^LLU SH`LYZ HUK THRPUN KLJPZPVUZ IHZLK VU H NSVIHS ]PL^ VM [OL UL[^VYR¶ YH[OLY [OHU VW[PTPaPUN LHJO SH`LY PU PZVSH[PVUµ 0V[P]H[PVUZ MVY KL]LSVWPUN &/'2 ^PYLSLZZ [LJOUPX\LZ" Ƭ ,TWYV]L WLYMVYTHUJL" ,TWYV]L [OL WLYMVYTHUJL VM ^PYLSLZZ UL[^VYRZ PU [LYTZ VM [OYV\NOW\[¶ KLSH`¶ YLSPHIPSP[`¶ HUK LULYN` LMMPJPLUJ`µ Ƭ ,UJYLHZL MSL_PIPSP[`" 0HRL ^PYLSLZZ UL[^VYRZ TVYL MSL_PISL HUK HKHW[HISL Ƭ 6\WWVY[ UL^ HWWSPJH[PVUZ" &/'2 [LJOUPX\LZ JHU LUHISL UL^ HWWSPJH[PVUZ Z\JO HZ YLHS²[PTL ]PKLV Z[YLHTPUN HUK T\S[PTLKPH ZLUZVY UL[^VYRZµ »²¼ The cross¾layer design and optimization wireless techniques are usually or typically applied in which layers of the Internet networks protocol stack? Why? &YVZZ²SH`LY KLZPNU HUK VW[PTPaH[PVU ±&/'2³ ^PYLSLZZ [LJOUPX\LZ HYL [`WPJHSS` HWWSPLK [V [OL 0$& ±0LKP\T $JJLZZ &VU[YVS³ HUK 3+< ±3O`ZPJHS³ SH`LYZ VM [OL ,U[LYUL[ WYV[VJVS Z[HJRµ 7OPZ PZ ILJH\ZL [OL 0$& HUK 3+< SH`LYZ HYL YLZWVUZPISL MVY [OL TVZ[ M\UKHTLU[HS HZWLJ[Z VM ^PYLSLZZ JVTT\UPJH[PVU¶ Z\JO HZ JOHUULS HJJLZZ¶ TLKP\T ZOHYPUN¶ HUK KH[H [YHUZTPZZPVUµ %` L_WSVP[PUN [OL PU[LYHJ[PVUZ IL[^LLU [OLZL [^V SH`LYZ¶ &/'2 [LJOUPX\LZ JHU HJOPL]L ZPNUPMPJHU[ WLYMVYTHUJL NHPUZ »¿¼ Compare and summarize the pros and cons for cross¾layer design and optimization over the mobile wireless techniques? 3YVZ VM \ZPUN &/'2 [LJOUPX\LZ V]LY TVIPSL ^PYLSLZZ UL[^VYRZ HYL " ,TWYV]LK WLYMVYTHUJL¶ PUJYLHZLK MSL_PIPSP[` HUK Z\WWVY[ ^PKL YHUNL VM HWWSPJH[PVUZ¶ ^OLYLHZ [OL JVUZ HYL PUJYLHZLK JVTWSL_P[`¶ PU[LYVWLYHIPSP[` HUK ZLJ\YP[` »½¼ What are the relationships between the layering principles and cross¾layer design and is the cross¾layer design principle against the layering principle? &YVZZ²SH`LY KLZPNU JHU IL ZLLU HZ HU L_[LUZPVU VM SH`LYPUN WYPUJPWSLZµ /H`LYPUN WYPUJPWSLZ HYL KLZPNULK [V THRL UL[^VYRZ TVYL TVK\SHY¶ LMMPJPLU[¶ HUK LHZPLY [V KL]LSVW HUK THPU[HPUµ &YVZZ²SH`LY KLZPNU I\PSKZ VU [OLZL WYPUJPWSLZ I` HSSV^PUN WYV[VJVSZ PU KPMMLYLU[ SH`LYZ [V JVTT\UPJH[L HUK ZOHYL PUMVYTH[PVUµ 7OPZ JHU SLHK [V M\Y[OLY PTWYV]LTLU[Z PU WLYMVYTHUJL¶ HKHW[HIPSP[`¶ HUK LMMPJPLUJ`µ &YVZZ²SH`LY KLZPNU PZ UV[ HNHPUZ[ [OL SH`LYPUN WYPUJPWSLµ ,U MHJ[¶ JYVZZ²SH`LY KLZPNU JHU IL \ZLK [V PTWSLTLU[ SH`LYPUN WYPUJPWSLZ TVYL LMMLJ[P]LS`µ
»À¼ What are the relationships between the cross¾layer designÁoptimization and the distributed optimizations? Ƭ &YVZZ²SH`LY KLZPNU¹VW[PTPaH[PVU PU]VS]LZ VW[PTPaPUN [OL PU[LYHJ[PVU IL[^LLU KPMMLYLU[ SH`LYZ VM H Z`Z[LT¶ ^OPSL KPZ[YPI\[LK VW[PTPaH[PVUZ PU]VS]L VW[PTPaPUN [OL WLYMVYTHUJL VM H Z`Z[LT I` KPZ[YPI\[PUN [OL JVTW\[H[PVUHS SVHK HJYVZZ T\S[PWSL KL]PJLZµ Ƭ &YVZZ²SH`LY KLZPNU¹VW[PTPaH[PVU JHU IL \ZLK [V VW[PTPaL [OL WV^LY JVUZ\TW[PVU HUK [OYV\NOW\[ VM [OL UL[^VYR I` QVPU[S` VW[PTPaPUN [OL WO`ZPJHS SH`LY¶ 0$& SH`LY¶ HUK UL[^VYR SH`LY WYV[VJVSZµ 'PZ[YPI\[LK VW[PTPaH[PVUZ JHU IL \ZLK [V KPZ[YPI\[L [OL JVTW\[H[PVUHS SVHK VM [OL UL[^VYR HJYVZZ T\S[PWSL KL]PJLZ¶ Z\JO HZ IHZL Z[H[PVUZ HUK TVIPSL KL]PJLZµ 7OPZ JHU SLHK [V H ZPNUPMPJHU[ YLK\J[PVU PU V]LYHSS WV^LY JVUZ\TW[PVU HUK PTWYV]LK WLYMVYTHUJLµ »¶¼ What are the key design issues in implementing the Cross¾Layer Design and Optimizations principles? :OLU PTWSLTLU[PUN JYVZZ²SH`LY KLZPNU HUK VW[PTPaH[PVUZ¶ KLZPNU PZZ\LZ^OPJO HYL ULLKLK [V IL JVUZPKLYLK HYL" Ƭ &VTWSL_P[`" &YVZZ²SH`LY KLZPNUZ JHU IL TVYL JVTWSL_ [OHU [YHKP[PVUHS SH`LYLK KLZPNUZ¶ HZ [OL` YLX\PYL PU[LYHJ[PVUZ IL[^LLU WYV[VJVSZ PU KPMMLYLU[ SH`LYZµ Ƭ 6[HUKHYKPaH[PVU " &YVZZ²SH`LY WYV[VJVSZ ULLK [V IL JVTWH[PISL ^P[O L_PZ[PUN WYV[VJVSZ HUK Z[HUKHYKZµ Ƭ ,U[LYVWLYHIPSP[` " (UZ\YPUN [OH[ KL]PJLZ HUK UL[^VYRZ MYVT KPMMLYLU[ ]LUKVYZ VY Z[HUKHYKZ JHU ^VYR ZLHTSLZZS` ^P[O JYVZZ²SH`LY VW[PTPaH[PVUZ JHU IL JVTWSL_µ »Â¼ What is the multiple¾input and multiple¾output »MIMO¼ and why MIMO can significantly enhance the QoS provisioning performances over mobile wireless networks? 0\S[PWSL²,UW\[ 0\S[PWSL²2\[W\[ ±0,02³ PZ H [LJOUVSVN` [OH[ \ZLZ T\S[PWSL HU[LUUHZ H[ IV[O [OL [YHUZTP[[LY HUK YLJLP]LY [V PTWYV]L [OL WLYMVYTHUJL VM H ^PYLSLZZ JVTT\UPJH[PVU Z`Z[LTµ 0,02 JHU ZPNUPMPJHU[S` LUOHUJL [OL X\HSP[`²VM²ZLY]PJL ±4V6³ WYV]PZPVUPUN WLYMVYTHUJLZ V]LY TVIPSL ^PYLSLZZ UL[^VYRZ ILJH\ZL VM PUJYLHZLK KH[H YH[LZ¶ OPNO YLSPHIPSP[` HUKYLK\JLK SH[LUJ`µ 0HZZP]L 0,02 PZ H UL^ [LJOUVSVN` [OH[ \ZLZ O\UKYLKZ VY L]LU [OV\ZHUKZ VM HU[LUUHZ [V HJOPL]L \UWYLJLKLU[LK ZWLJ[YHS LMMPJPLUJ` HUK YLSPHIPSP[`
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