UE Uplink 10 Ms Compression With DTX for Battery Savings
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Solution Overview
Problem
The operation of dedicated channels in wireless communication systems, such as UMTS, consumes significant battery power at user equipment (UE), reducing the operational time on battery power due to continuous transmission requirements.
Innovation Solution
Configuring a 10 ms transmission mode on the uplink channel at the UE, compressing a 20 ms transmission into a 10 ms compressed transmission, and performing discontinuous transmission (DTX) during the second 10 ms of the 20 ms TTI to reduce battery consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If continuous transmission is performed on the uplink channel to maintain communication quality, then reliability is improved, but battery consumption increases
Solution Approach 1:
The patent implements discontinuous transmission (DTX) where the UE transmits periodically at 10ms intervals instead of continuously. The transmission is activated only during specific subframes (first and fifth subframes) within each 20ms TTI, creating a periodic transmission pattern that reduces energy consumption while maintaining communication reliability through scheduled retransmissions and hybrid ARQ protocols.
Solution Approach 2:
The patent dynamically adjusts the transmission behavior based on communication conditions. The UE transitions between active transmission states and discontinuous transmission states, adapting the transmission pattern to maintain reliability while optimizing battery usage. The system dynamically manages the activation and deactivation of transmission channels based on data availability and communication requirements.
2Reliability
If 20 ms transmission time interval is used for dedicated channel operation, then communication reliability is maintained, but battery consumption increases due to longer continuous transmission
Solution Approach 1:
The patent segments the 20ms TTI into smaller 10ms transmission intervals, further dividing it into discrete subframes. This segmentation allows the UE to perform transmission only in specific subframes (first and fifth) rather than continuously throughout the entire 20ms period, reducing battery consumption while maintaining communication reliability through the segmented transmission structure and associated retransmission mechanisms.
Solution Approach 2:
The patent implements periodic transmission within the 20ms TTI structure, activating transmission only during specific periodic intervals (first and fifth subframes). This periodic action pattern reduces the overall transmission time and energy consumption while maintaining the 20ms TTI framework for communication reliability, with gaps between transmission periods allowing battery conservation.
3Adaptability or versatility
If dedicated control channel and dedicated traffic channel are transmitted simultaneously, then communication functionality is complete, but battery consumption increases
Solution Approach 1:
The patent merges the transmission of the dedicated control channel (DCCH) and dedicated traffic channel (DTCH) into a unified transmission framework. Both channels are transmitted together during the same active subframes (first and fifth subframes within each 20ms TTI), allowing the UE to maintain complete communication functionality while reducing overall battery consumption by coordinating channel transmissions rather than operating them independently and continuously.
Data Source
AI summary
The present disclosure presents a method and an apparatus for reducing battery consumption at a user equipment (UE). For example, the method may include configuring a 10 ms transmission mode on an uplink (UL) channel at the UE, indicating configuration of the 10 ms transmission mode to a base station in communication with the UE, compressing a 20 ms transmission associated with a 20 ms transmission time interval (TTI) into a 10 ms compressed transmission, transmitting the 10 ms compressed transmission during a first 10 ms of the 20 ms TTI, and performing a discontinuous transmission (DTX) of the UL channel during a second 10 ms of the 20 ms TTI. As such, reduced battery consumption at a UE may be achieved.