Delay-sensitive cross layer scheduler for multi-user wireless communication systems

a multi-user wireless communication and scheduler technology, applied in power management, data switching details, transmission path division, etc., can solve problems such as inability to meet user delay requirements, layer scheduling algorithm assumes homogenous user delay requirements, and various assumptions of practicable conventional cross-layer systems

Inactive Publication Date: 2008-09-11
SUNG HO PROPERTIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology helps optimize resource usage during communication networks while ensuring consistently high data rates are achieved through multiple access techniques such as Orthogonal Frequency Division Multiplexing (OFDM) or Code division Multiple Access (CDMA). By incorporating queueing therapeutics with information processing capabilities, this algorithm can predict future delays based on past CSI updates without relying solely upon previous ones. It also considers different types of interference from neighbor base stations when assigning resources accordingly. Overall, it provides technical benefits including improved efficiency and reliability in wireless communications.

Problems solved by technology

This patented technical problem addressed in this patents relates to improving the efficient utilization of multicarrier wireless communications networks due to limitations associated with imperfect timing constraint satisfaction caused by varying delays experienced during actual usage scenarios like mobile devices. Current methods only allow for complete consistence between all possible delayed packets but cannot handle these issues effectively.

Method used

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  • Delay-sensitive cross layer scheduler for multi-user wireless communication systems
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  • Delay-sensitive cross layer scheduler for multi-user wireless communication systems

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Overview

[0024]A simplified overview is provided in the present section to help enable a basic or general understanding of various aspects of exemplary, non-limiting embodiments that follow in the more detailed description and the accompanying drawings. This overview section is not intended, however, to be considered extensive or exhaustive. Instead, the sole purpose of the following of the overview is to present concepts related to some exemplary non-limiting embodiments in a simplified form as a prelude to the more detailed description of these and various other embodiments that follow.

[0025]As mentioned in the background, conventional cross layer systems have assumed that users are delay insensitive, and yet, at least some users are likely to have requirements, or sensitivity, when it comes to delay. In this regard, next generation networks are expected to contain real time users of heterogeneous classes with different delay requirements. As a result, in accordance with various embod

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Abstract

CSIT error considerate delay-sensitive user access systems are provided in a multi-user OFDMA environment comprises a user delay sensitivity tracking component, a CSIT estimating component, a system queue state tracking component and a cross layer scheduling component. The techniques assume heterogeneous users with respect to delay and assume that CSIT information includes error, and optimally allocates broadcast resources, e.g., power, subcarriers and data rate, based on such assumptions.

Description

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Claims

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Application Information

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Owner SUNG HO PROPERTIES
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