Method and device for selecting uplink transmission parameters

Abstract

The invention provides a method and equipment for selecting uplink transmission parameters. The method includes obtaining the scheduling situation of the neighboring base station; according to the scheduling situation, determining a first interference level value, where the first interference level value is the interference from the second UE received by the first user equipment UE during uplink data transmission Level value, the first UE is a UE served by the base station, and the second UE is a UE served by the neighboring base station; according to the signal strength from the first UE detected by the base station, the Determine the first uplink transmission parameter based on the noise level value of the base station and the first interference level value; and send downlink control signaling to the first UE to instruct the first UE to transmit and transmit the uplink data during uplink data transmission. Uplink data corresponding to the first uplink transmission parameter. The present invention can select more suitable uplink transmission parameters in real time and improve uplink transmission performance.

Description

technical field [0001] The present invention relates to wireless communication technology, in particular to a method and equipment for selecting uplink transmission parameters. Background technique [0002] In wireless communication, the conditions of the wireless link between the transmitter and the receiver change over time, and the conditions are different in different frequency bands. The quality of the link condition determines the amount of transmitted data that can be carried. If the link condition is good, a large amount of data can be transmitted, while if the link condition is poor, only a small amount of data can be transmitted. According to the time-frequency variation characteristics of the wireless link, the link adaptive technology is designed to improve the transmission efficiency. In the uplink transmission of the Long Term Evolution (LTE) system, the link adaptation technology mainly includes the following steps: First, the base station measures the signal...

AI Technical Summary

Problems solved by technology

From the above description, it can be seen that the uplink transmission parameters are selected according to the interference level value measured at the scheduling time, but there is a delay between the scheduling time and the time when the UE actually transmits data, and the link quality of the two times is different. Especially in the heterogeneous network due to strong interference, there is a large difference in the interference level values ​​​​at the two times, then the uplink transmission parameters selected at the scheduling time are inappropriate, affecting uplink transmission performance

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