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Erschienen in:
2011 | OriginalPaper | Buchkapitel
Performance Study of Opportunistic Scheduling in LTE Networks
verfasst von : Tara Ali-Yahiya
Erschienen in: Understanding LTE and its Performance
Verlag: Springer New York
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Long-Term Evolution (LTE) is a new radio access technology proposed by the third-generation partnership project (3GPP) in order to provide a smooth migration toward fourth-generation (4G) wireless systems. The 3GPP LTE uses orthogonal frequency division multiple access (OFDMA) in the downlink. The OFDMA technology divides the available bandwidth into multiple narrow-band subcarriers and allocates a group of subcarriers to a user based on its requirements, current system load, and system configuration.
The 3GPP LTE radio network architecture consists of only one node between the user and the core network known as eNodeB which is responsible to perform all radio resource management (RRM) functions. Packet scheduling is one of the RRM functions and it is responsible for intelligent selections of users and transmissions of their packets such that the radio resources are efficiently utilized and the users’ quality of service (QoS) requirements are satisfied.