Wireless Signal Priority Scheduling for COMP Latency Reduction
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Solution Overview
Problem
Coordinated Multi-Point (COMP) operations in wireless communication systems introduce additional processing latency due to the transmission and processing of reference and data signals, which is unacceptable for latency-sensitive applications and increases costs with more powerful hardware or higher bandwidth transport networks.
Innovation Solution
Assigning higher priority to reference signals over data signals for transmission and processing, allowing earlier processing of reference signals to derive channel state information, thereby reducing overall processing delay without the need for costly hardware or bandwidth upgrades.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If Coordinated Multi-Point (COMP) operations are implemented to improve capacity and cell edge user throughput, then system performance is improved, but processing delay increases
Solution Approach 1:
The patent applies preliminary action by transmitting reference signals before data signals in the uplink subframe. The reference signals are sent first, allowing the base station to perform channel estimation and prepare for data signal processing in advance. This temporal separation and preliminary transmission of reference signals enables the system to maintain COMP operations for improved throughput while reducing the processing delay for data signal demodulation.
2Loss of time
If more powerful hardware or higher bandwidth transport networks are used to reduce processing delay, then processing delay is reduced, but operational costs increase
Solution Approach 1:
The patent avoids costly hardware upgrades by implementing preliminary action through signal transmission ordering. By sending reference signals before data signals and processing them in advance, the system reduces processing delay using existing hardware capabilities and network bandwidth, thereby avoiding the need for expensive infrastructure upgrades.
Solution Approach 2:
The patent changes the temporal parameter of signal transmission by reordering the transmission sequence to send reference signals before data signals. This parameter change in transmission timing allows the system to reduce processing delay through software-based scheduling rather than hardware upgrades, maintaining cost-effectiveness.
Data Source
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AI summary
Embodiments of the present disclosure provide a method implemented in a first device for wireless communication. The method may comprise receiving a sequence of signals from a second device, the sequence of signals comprising a signal of a first type and a signal of a second type; assigning a first priority to the signal of the first type and a second priority lower than the first priority to the signal of the second type; and transmitting the sequence of signals via a transport network to a third device according to the assigned priorities. By virtue of this method, the processing delay at the third device may be reduced at low cost.