Abstract
AbstractCoexistence of different access technologies, hierarchical cellular deployment, a wide variety of data services, requirements for transparent operation across different technologies, adaptivity to varying network conditions and mobility and quality of service (QoS) constraints introduce a number of challenges in the design of future generation systems and the specification of new air interfaces, such as efficiency and flexibility in the utilization of spectrum, dynamic resource allocation and exploitation of the multiuser diversity and reconfigurable interference management and inter‐cell coordination. In this paper, three critical issues for the design of next generation systems are addressed: (i) duplexing, (ii) scheduling and resource allocation and (iii) interference and inter‐cell coordination. A number of research directions are presented, which constitute promising potential candidates for next generation systems specification. Copyright © 2005 John Wiley & Sons, Ltd.
Highlights
Generation wireless systems are expected to deliver a wide variety of data services in a heterogeneous communication network environment, which supports transparent operation across a number of different technologies, hierarchical and ad hoc structures, adaptivity to varying traffic and propagation conditions and satisfies certain quality of service (QoS) constraints
The design of generation systems and the specification of a new air interface will have to rely on the exploitation of new resources, such as the channel state information (CSI), cross layer and contextual information, and the implementation of optimization strategies for the efficient and flexible utilization of the spectrum available, the dynamic resource allocation exploiting all types of diversity and the reconfigurable interference management and inter-cell coordination
The objective was to understand the major requirements and the challenges involved in the design of future generation networks and present a number of research directions that appear to be promising potential candidates
Summary
Coexistence of different access technologies, hierarchical cellular deployment, a wide variety of data services, requirements for transparent operation across different technologies, adaptivity to varying network conditions and mobility and quality of service (QoS) constraints introduce a number of challenges in the design of future generation systems and the specification of new air interfaces, such as efficiency and flexibility in the utilization of spectrum, dynamic resource allocation and exploitation of the multiuser diversity and reconfigurable interference management and inter-cell coordination. Three critical issues for the design of generation systems are addressed: (i) duplexing, (ii) scheduling and resource allocation and (iii) interference and inter-cell coordination. A number of research directions are presented, which constitute promising potential candidates for generation systems specification. Copyright # 2005 John Wiley & Sons, Ltd
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