Uplink residual resource allocation method based on modulation and coding scheme and base station

Abstract

The invention discloses an uplink residual resource allocation method based on a modulation and coding scheme and a base station. The method comprises the steps of in a preset uplink scheduling period, on the basis of a PRB (Physical Resource Block) resource allocation rule corresponding to a preset QoS (Quality of Service) guaranteed rate, allocating PRB resources to each piece of first UE (UserEquipment) in a scheduling queue; judging whether residual PRB first resources exist or not after the PRB resources are allocated; determining the number of PRBs allocated to each piece of first UE based on the residual PRB first resources and an MCS (Modulation and Coding Scheme) index number corresponding to each piece of first UE if the residual PRB first resources exist; and allocating the residual PRB first resources to each piece of first UE based on the number of the PRBs allocated to each piece of first UE, thereby realizing uplink residual resource allocation. According to the methodand the base station, on the basis of the MCS index numbers corresponding to the UE, the number of the PRBs allocated to each piece of first UE is determined, BO (Buffer Occupancy) with high scheduling is reduced in am multiuser scene, the PRBs are prevented from being occupied excessively, and influence of worsen modulation performance of each PRB on system throughput is avoided.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method for allocating remaining uplink resources based on a modulation and coding scheme and a base station. Background technique [0002] In the communication field, the calculation granularity of resource allocation for uplink services is Logical Channel Group (LCG). According to the relevant provisions of flow control in the communication protocol, for Guaranteed Bit Rate (GBR) bearing, the highest rate is the maximum bit rate (Maximum Bit Rate, MBR), the lowest rate is GBR. For non-guaranteed bit rate (Non Guaranteed Bit Rate, NGBR) bearers, the lowest downlink rate is the Minimum Bit Rate (MINBR), the lowest uplink rate is the Prioritized Bit Rate (PBR), and the highest uplink and downlink rates are both It is the aggregate maximum bit rate (Aggregate Macimum Bit Rate, AMBR). The guaranteed rate of flow control is shown in Table 1. [0003] Guaranteed rat...

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Problems solved by technology

[0007] It can be seen that the current uplink remaining resource allocation scheme has the following defects: after satisfying the QoS guaranteed rate, the uplink remaining resources first satisfy the AMBR of the UE ranked first in the queue, and when the uplink power of the UE is limited, it will lead to single-subframe scheduling The buffer occupancy (Buffer Occupancy, BO) is large, occupying too many PRBs may lead to the deterioration of the demodulation performance of each PRB, thereby bringing more damage to the demodulation performance of the receiver and the physical layer (Physical Layer, PL). Great pressure; if the BO scheduled in a single subframe is too small, it may also lead to poor PL demodulation performance, increase transmission delay, and affect user service perception

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