ABSTRACT
Contents 7.1 Introduction ................................................................................. 266
7.1.1 Objective and Context ........................................................ 266 7.1.2 Radio Resource Management for Advanced Wireless Systems ... 267
7.2 Radio Resource Management for Evolved UMTS Networks ............... 268 7.2.1 MAC Sublayer ................................................................... 269 7.2.2 RLC Sublayer .................................................................... 270 7.2.3 PDCP Sublayer .................................................................. 270 7.2.4 RRC Sublayer .................................................................... 270
7.3 Overview of Packet Scheduling in HSPA and Beyond ........................ 271 7.4 Overview on Packet Scheduling in LTE ............................................ 273
7.4.1 Radio Admission Control .................................................... 273 7.4.2 Uplink Packet Scheduling .................................................... 274 7.4.3 Downlink Packet Scheduling ............................................... 275 7.4.4 Time and Frequency Domains Packet Scheduling .................. 277 7.4.5 Scheduling and Persistent Scheduling ................................... 277
7.5 HSPA and LTE Scheduling Techniques Models ................................ 277 7.5.1 Fair Resource Scheduling Technique Protocol ........................ 278 7.5.2 Fair Throughput Scheduling Technique ................................ 279 7.5.3 Maximum CIR Scheme (Max C/I) ....................................... 280 7.5.4 Fair Channel-Dependent Scheduling (FCDS) Protocol ........... 283 7.5.5 Score-based Scheduling ....................................................... 284
7.6 New Optimized Scheduling Techniques for Multiple Services Case ..... 285 7.6.1 Concept of Cross-Layer Design ............................................ 285 7.6.2 Description of the Introduced Techniques (Protocols) ............ 286
7.6.2.1 Prioritized Differentiated Services Scheduling ........... 286 7.6.2.2 Prioritized Rayleigh Peak Scheduling ...................... 286 7.6.2.3 Weighted Differentiated Services Scheduling ........... 287 7.6.2.4 Weighted Rayleigh Peak Scheduling ....................... 287 7.6.2.5 ThreshOld-based Priority (TOP) Scheduling
Algorithm ............................................................ 287 7.6.3 Scheduling Techniques Optimization According
Services Profiles and Requirements ....................................... 289 7.6.3.1 Prioritized Differentiated Services Scheduling
Technique ........................................................... 289 7.6.3.2 Weighted Differentiated Services Scheduling
Technique Optimization According to Services Profiles and Requirements ..................................... 291
7.7 Summary and Open Problems ......................................................... 295 References .............................................................................................. 296
7.1 Introduction In the near future, a broad range of multimedia applications with guaranteed quality of service (QoS) is expected to be provided by new evolved UMTS networks. The 3rd Generation Partnership Project (3GPP) has standardized in Release 6 and 7 new cellular-based systems denoted respectively as high-speed packet access (HSPA) and evolved high-speed packet access (eHSPA or HSPA+). Another area of focus defined in 3GPP Release 8 is the introduction of a new OFDM-based technology through the long-term evolution (LTE) work item, often referred to as the evolved UMTS terrestrial radio access network (EUTRAN). It is the next generation cellular wireless standard that is considered the prominent path to the 4G cellular wireless system.
