Uplink Rate Control via Absolute Transmission Rate Period
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Solution Overview
Problem
Current methods for controlling uplink user data transmission rates in radio base stations lead to overspending of downlink transmission power resources, resulting in reduced radio capacity, as they require continuous transmission of absolute transmission rate control channels to set the transmission rate to 0 bps, causing inefficiency.
Innovation Solution
Implementing a transmission rate control method that sets an effective period for the absolute transmission rate control channel using layer 3 signaling or a fixed value, allowing the radio base station to reduce the uplink user data transmission rate to 0 bps without transmitting the absolute transmission rate control channel, thereby optimizing the trade-off between downlink control channel load and uplink scheduling accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the radio base station continuously transmits the absolute transmission rate control channel to set the transmission rate to 0 bps, then the uplink user data transmission can be stopped, but the downlink transmission power resources are overspent, resulting in reduced radio capacity
Solution Approach 1:
The patent introduces an effective period for the absolute transmission rate control channel, where the transmission rate control value is only valid within a specific time window. After the effective period expires, the mobile station automatically stops transmitting uplink user data without requiring continuous downlink control channel transmissions. This periodic validation mechanism converts continuous control into periodic control, significantly reducing downlink power consumption while maintaining reliable transmission control.
2Measurement precision
If the absolute transmission rate control channel is transmitted frequently to maintain accurate rate control, then the scheduling accuracy is improved, but the control channel load increases, reducing overall network efficiency
Solution Approach 1:
The patent pre-configures an effective period for the absolute transmission rate control channel during which the control value remains valid. The mobile station performs preliminary setup by storing the control value and its validity period, then automatically executes the rate control (including stopping transmission) when the period expires. This preliminary action approach reduces the need for frequent control channel transmissions while maintaining accurate rate control throughout the effective period.
Data Source
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AI summary
The present invention provides a transmission rate control method for controlling the transmission rate of uplink user data, including the step of; a radio network controller notifies to a radio base station and a mobile station an effective period of an absolute transmission rate control channel, when a call is established or when a serving cell is changed; a radio base station determines whether or not to transmit the absolute transmission rate control channel to each of mobile stations which is performing a communication with the radio base station; and each of the mobile stations determines the transmission rate of the uplink user data, based on a maximum allowable transmission rate mapped to the absolute transmission rate control channel notified by the radio base station.