Power control method and system for reinforced uplink transmitting scheduling information

Abstract

The invention provides a power control method applied when an enhanced uplink independently transmits scheduling information and a device thereof. The method includes the steps: a RNC configures the power offset value of the scheduling information as the offset value of transmitting power when the scheduling information is independently transmitted with authorization and then sends the offset value to UE and a base station; when the UE independently transmits the scheduling information on authorized resources, the power offset value of the scheduling information is used as the power offset value of an enhanced uplink physical channel and then authorized power is compared with the magnitude of the transmitting power of the enhanced uplink physical channel. When the magnitude of the transmitting power is more than the magnitude of the authorized power, the UE transmits the enhanced uplink physical channel based on the authorized power; while the magnitude of the transmitting power is less than the magnitude of the authorized power, the enhanced uplink physical channel is transmitted based on the magnitude of the transmitting power of the enhanced uplink physical channel, thus ensuring the reliable transmission of the scheduling information and improving the scheduling accuracy and the utilization rate of system resources.

Description

technical field [0001] The present invention relates to the field of wireless communication, and more specifically, to a power control method and system for enhancing uplink transmission scheduling information alone. Background technique [0002] The enhanced uplink is generally called HSUPA (High Speed ​​Uplink Packet Access), which aims to improve the efficiency of the uplink through advanced technology to effectively support web browsing, video, multimedia information and other based on IP business. [0003] A new E-DCH transmission channel (enhanced uplink dedicated transmission channel) is newly added in HSUPA, and the enhanced uplink data is carried on the transmission channel, and the TTI (transmission time interval) of the E-DCH is 5ms. The packet mapped to the E-DCH transmission channel is called MAC-ePDU (Enhanced Media Access Control Protocol Data Unit), which includes one or more MAC-d flows. [0004] The physical channels related to E-DCH include: [0005] 1....

AI Technical Summary

Problems solved by technology

[0013] 1. Since the authorized resources are relatively small, the length of the transmission block allowed to be transmitted by the authorized resource cannot transmit service data (the minimum packet length of the service data is greater than the length of the transmission block), and at this time, the UE only sends SI on the authorized resource;

[0014] 2. Due to the timing reporting mechanism of the scheduling information, the UE must send SI on the current authorized resources, but because the obtained resources are limited, it cannot carry other business data

[0026] It can be seen that in the existing HSUPA system, when the SI is sent alone in a MAC-ePDU, there is no power control mechanism, and there is no mechanism for ensuring transmission reliability.

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