Discontinuous Transmission for Uplink Control Channel Power Optimization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The continuous transmission of dedicated physical control channels (DPCCH) and dedicated physical data channels (DPDCH) in the absence of a signaling radio bearer (SRB) on a dedicated channel (DCH) leads to increased power supply overheads in user equipment (UE), affecting battery life and inter-UE interference.
Innovation Solution
A communications device and method that determine the position of a timeslot within a transmission interval of an SRB and refrain from sending or receiving DPCCH and DPDCH when the timeslot does not include the SRB or a DPCH transport block, setting parameters to enable Dynamic Transmit (DTX) or Dynamic Receive (DRX) modes to conserve power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE continuously transmits DPCCH and DPDCH when no SRB is transmitted on the DCH, then the transmission reliability of the radio link is maintained, but the power supply overheads consumed by the UE increase
Solution Approach 1:
The patent implements discontinuous transmission (DTX) where the UE periodically transmits DPCCH and DPDCH only during specific timeslots within a transmission interval, rather than continuously. The UE determines whether to transmit based on whether an SRB is scheduled in the current timeslot, creating a periodic transmission pattern that reduces power consumption while maintaining reliability through scheduled transmissions at appropriate intervals
Solution Approach 2:
The patent introduces dynamic control of DPCCH and DPDCH transmission through DTX functionality. The transmission behavior dynamically adapts based on the presence or absence of SRB data to be transmitted, allowing the system to switch between active transmission and idle states, thereby optimizing the balance between reliability and power consumption according to actual communication needs
2Reliability
If the UE continuously transmits DPCCH and DPDCH, then the link quality is maintained, but the battery life is reduced
Solution Approach 1:
The UE implements periodic transmission of DPCCH and DPDCH only during timeslots where SRB transmission is required, rather than continuous transmission. This periodic approach maintains link quality through regular scheduled transmissions while significantly extending battery life by avoiding unnecessary continuous power consumption during idle periods
Solution Approach 2:
The patent enables the UE to discard (stop transmitting) DPCCH and DPDCH during timeslots when no SRB transmission is needed, and recover (resume transmission) when SRB data becomes available. This on-demand transmission strategy preserves battery life by eliminating wasteful continuous transmission while ensuring link quality is maintained when actual communication is required
3Reliability
If the UE continuously transmits DPCCH and DPDCH, then the transmission reliability is maintained, but the inter-UE interference increases
Solution Approach 1:
By implementing periodic transmission where DPCCH and DPDCH are transmitted only during timeslots with scheduled SRB data, the patent reduces the overall transmission activity in the network. This periodic approach maintains transmission reliability through regular scheduled transmissions while reducing inter-UE interference by eliminating continuous transmissions that would otherwise contribute to network interference
Solution Approach 2:
The patent extracts and removes unnecessary DPCCH and DPDCH transmissions from the continuous transmission stream, keeping only the essential transmissions that carry actual SRB data. This extraction approach maintains reliability by preserving necessary transmissions while eliminating the harmful continuous transmission component that causes inter-UE interference
Data Source
AI summary
The embodiments provide a communications device and a discontinuous transmission method, The communications device includes: a first determining module, configured to: when a dedicated channel DCH carries a signaling radio bearer SRB, determine a position in which a current timeslot is located in a transmission interval of the SRB, where the transmission interval of the SRB is greater than or equal to 40 ms, The communications device also includes a second determining module, configured to: when the position in which the current timeslot is located meets a preset condition, and a radio frame in which the current timeslot is located does not include the SRB or a DPCH transport block, determine not to send or not to receive a dedicated physical control channel DPCCH and/or a dedicated physical data channel DPDCH in the current timeslot.