UE DRX Sleep Coordination for LTE Interference Reduction
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Solution Overview
Problem
Communication interference occurs between LTE systems and other wireless communication systems operating on neighboring frequency bands, as existing methods require significant changes to base station configurations and may not support all base stations, affecting effective communication.
Innovation Solution
A method for a user equipment (UE) to send indication information to another system module when entering a DRX sleep state or when capable of data transmission, allowing the other system to utilize this time for data transmission, thereby reducing interference and improving resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the UE sends a request message to the base station to configure time for alternating work in two communication systems, then the base station can allocate time for the UE to work in each system, but this requires introducing a new configuration function into the base station which greatly changes the base station and may not be supported by all base stations
Solution Approach 1:
The UE autonomously determines its own DRX sleep time based on LTE system parameters (drx-InactivityTimer, on-duration timer, HARQ process, periodic measurement) and directly notifies the other system module of this time period. This self-service approach eliminates the need for base station configuration changes while maintaining compatibility across different base stations.
Solution Approach 2:
The time allocation function is extracted from the base station and relocated to the UE. The UE extracts the DRX sleep time information from LTE system parameters and uses this extracted information to coordinate with the other system, removing the burden of time configuration from the base station.
2Productivity
If the UE uses another wireless communication technology on a neighboring frequency band while using LTE technology, then the UE can utilize multiple frequency bands, but communication collision occurs between the LTE system and another system causing interference
Solution Approach 1:
The UE employs periodic DRX (Discontinuous Reception) cycles in the LTE system, creating regular sleep and wake periods. The other system is notified to perform data transmission during the LTE sleep periods, establishing a periodic coordination pattern that allows both systems to operate without continuous interference.
Solution Approach 2:
The UE dynamically adjusts the coordination between systems based on LTE DRX state changes. When the LTE system enters sleep mode, the other system is activated for transmission; when LTE wakes up, the other system pauses. This dynamic switching optimizes resource utilization while preventing interference.
Data Source
AI summary
A method and a user equipment for controlling multiple communication systems to implement communication are disclosed. The method includes: when a long term evolution LTE system module in a UE is about to enter a discontinuous reception DRX sleep state or to temporarily stop data transmission, sending, by the LTE system module, first indication information to another system module in the UE, where the first indication information is used for indicating, to the other system module, that the LTE system module enters the DRX sleep state and at least part of time during which the LTE system module is in the DRX sleep state, or the first indication information is used for indicating that the other system module is capable of performing data transmission and time during which the other system module is capable of performing data transmission.