Uplink scheduling correction method and system based on LTE system

A technology for dispatching data and the base station side, which is applied in the field of communication and can solve problems such as difficult demodulation and communication interruption

Active Publication Date: 2019-01-18
GUANGZHOU HAIGE COMM GRP INC
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Problems solved by technology

In this way, for cell edge users, it may be difficult for the base statio

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  • Uplink scheduling correction method and system based on LTE system
  • Uplink scheduling correction method and system based on LTE system
  • Uplink scheduling correction method and system based on LTE system

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[0058] The present invention will be further described below with reference to the drawings and embodiments.

[0059] Such as figure 1 The shown uplink scheduling correction method based on the LTE system includes:

[0060] S1: Calculate the signal to interference plus noise ratio at t1+k based on the power headroom at t1+k and the interference and noise power values ​​at t1+k, and use it as a reference value. Specifically, in the process of reducing the power headroom on the terminal side, at time t1, the modulation and coding strategy MCS value of the uplink shared channel PUSCH and the preset reference threshold MCS are scheduled. threshold When the difference of is less than the preset value m, obtain the spectral efficiency SE at t1+k t1+k , The number of schedulable data channel RBs at t1+k And the power headroom PHR reported by the terminal side between t1 and t1+k t1 ; Where k≥0, and t1+k time is the scheduling time closest to time t1; according to the power headroom PHR...

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Abstract

The invention discloses an uplink scheduling correction method based on an LTE system, and the method comprises the steps: calculating a scaling factor alpha according to the relation of an SINR (signal to interference plus noise ratio), a spectrum utilization ratio, a PHR, and a number of RBs of a scheduled PUSCH at the moments t1+t2 and t1+k; calculating the number (shown in the description) ofschedulable data channels RB at the moment t1+t2 according to the scaling factor alpha and the number (shown in the description) of schedulable data channels RB. The method reduces the number of uplink schedulable RBs on the basis of external annular link adaption when a mobile terminal moves an edge of a cell and the MCS is lower than a preset reference threshold MCSthreshold when a base stationside performs the scheduling of a terminal side PUSCH. Therefore, the method can improve the transmission energy on each RB when the terminal side performs the data transmission on a PUSCH, thereby improving the decoding capability of the PUSCH. Through this strategy, the coverage distance of the base station can be increased. In the field of private network communication, the method is applied tothe application field with the higher requirement for the coverage distance of the base station, and is higher in practical value.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to an uplink scheduling correction method and system based on an LTE system. Background technique [0002] In recent years, there has been an increasing demand for communication data transmission rates. The 3GPP standard organization has completed the formulation of the LTE-Advanced standard, and its communication products have been commercialized on a large scale. In the civilian LTE system, the mainstream scheduling algorithms include: the principle of maximum signal-to-interference ratio, the principle of proportional fairness (PF), and round-robin scheduling (Round Robin). In civilian systems, the general user capacity is large. In the scheduling system, it is necessary to consider maximizing spectrum utilization to provide higher system transmission rates to users, or potential users. In other words, during the uplink scheduling of the civil LTE system, the sy...

Claims

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Application Information

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IPC IPC(8): H04W52/26H04W52/36H04W72/12
CPCH04W52/262H04W52/365H04W72/1268H04W72/542
Inventor 彭岳峰陈政杨小平周雄
Owner GUANGZHOU HAIGE COMM GRP INC
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