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Improved LTE (Long Term Evolution) scheduling method based on exponential rule

A scheduling method and scheduling priority technology, applied in electrical components, wireless communication, etc., can solve the problem of lack of scheduling strategy in mixed business scheduling

Inactive Publication Date: 2014-05-28
ZHEJIANG UNIV OF TECH
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Problems solved by technology

Therefore, generally speaking, the above two types of algorithms lack a mechanism for dynamically adjusting their scheduling strategies with changes in wireless resources for the scheduling of mixed services.

Method used

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  • Improved LTE (Long Term Evolution) scheduling method based on exponential rule
  • Improved LTE (Long Term Evolution) scheduling method based on exponential rule
  • Improved LTE (Long Term Evolution) scheduling method based on exponential rule

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Embodiment Construction

[0035] The following is a further description of the present invention in conjunction with the accompanying drawings. The accompanying drawings described here are used to provide a further understanding of the present invention and constitute a part of the application. The exemplary embodiments of the present invention are used to explain the present invention and are not intended to constitute an improper limitation of the present invention.

[0036] see figure 1 , first, according to the signal received by user i, calculate the channel gain of user i on all carriers in the nth TTI, as follows:

[0037] Gain i , k ( n ) = 10 ( pl i , k ...

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Abstract

The invention discloses an improved LTE (Long Term Evolution) scheduling method based on EXP (Exponential rule) scheduling algorithm, mainly to solve the problem that the existing algorithm is not applicable to mixed services. The method is that a weight factor in a scheduling priority coefficient is calculated according to the?instantaneous rate at a nth TTI?(Transmission?Time?Interval), the average?transmission rate of a former (n-1)th TTI by the user i, and GBR?(Guaranteed?Bit?Rate) parameters required by each service. The realization process comprises steps of calculating the?signal-to-noise ratio at each subcarrier of user i, calculating the effective signal-to-noise ratio at each RB (Resource Block) of user i, calculating the instantaneous transmission rate reached at each RB of the nth TTI of the user i according to the corresponding GBR demand of each service, calculating the scheduling priority coefficient at each RB of the user i according to the corresponding GBR demand of each service.

Description

technical field [0001] The present invention relates to the technical field of downlink resource block (Resource Block) scheduling in LTE (Long Term Evolution), in particular to a hybrid service-based downlink RB resource priority scheduling method in the system. Background technique [0002] In recent years, with the extensive access requirements of mixed multimedia services in the Internet and the rapid development of wireless communication technology, wireless cellular network technology and market have experienced explosive growth. The next-generation mobile communication system 3GPP LTE not only has high broadband requirements, but also needs to meet the service quality requirements of new multimedia services. [0003] At present, the main wireless packet scheduling algorithms can be divided into two categories, one is the packet scheduling algorithm that considers the channel quality of the physical layer (PHY-layer), such as the maximum carrier-to-interference ratio (...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/12
Inventor 吴哲夫金腾飞朱健军王中友
Owner ZHEJIANG UNIV OF TECH
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