Wireless Channel Switching for Power Efficiency

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Solution Overview

Problem

Wireless dual concurrent band (DCB) or multiple concurrent band (MCB) operations in wireless communication systems lead to higher power consumption, which may not be beneficial due to the increased overall throughput and communication efficiency.

Innovation Solution

Implementing a system that allows for dynamic switching between wireless communication channels, using a processor to manage data packets and acknowledgments across multiple channels, and employing buffer management techniques to optimize channel usage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If wireless dual concurrent band (DCB) or multiple concurrent band (MCB) operations are implemented to achieve higher overall throughput, then communication efficiency is improved, but power consumption increases

Engineering Contradiction:
Improveoverall throughputVSAvoidpower consumption
Core Design Contradiction:
ProductivityVSUse of energy by moving object

Solution Approach 1:

The patent implements dynamic band switching where the wireless communication system can dynamically switch between single-band and dual-concurrent-band operations based on communication conditions. The system monitors packet loss rates and automatically adjusts the operating mode, transitioning to DCB/MCB only when necessary to maintain throughput while reducing power consumption during normal conditions.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system changes operational parameters by adjusting the number of active frequency bands based on communication quality metrics. When packet loss exceeds a threshold, the system activates additional bands; when conditions improve, it deactivates them. This parameter adjustment resolves the contradiction by making band usage conditional rather than constant.

Inventive Principle:
Principle #35Parameter changes

2Use of energy by moving object

If dynamic switching between channels is implemented to reduce power consumption, then energy efficiency is improved, but data stream continuity may be affected

Engineering Contradiction:
Improvepower consumptionVSAvoiddata stream continuity
Core Design Contradiction:
Use of energy by moving objectVSReliability

Solution Approach 1:

The patent implements preliminary buffering where data packets are stored in buffers before transmission. When switching between bands or channels, the system has pre-buffered packets ready for seamless transmission on the new channel, eliminating gaps in data stream continuity while enabling power-saving channel switching.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system uses feedback mechanisms to monitor packet loss rates and transmission quality in real-time. This feedback enables the system to make informed decisions about when to switch channels and when to maintain the current connection, ensuring that switching only occurs when it will not compromise data stream continuity.

Inventive Principle:
Principle #23Feedback

3Productivity

If buffer management techniques are used to optimize channel usage, then communication efficiency is improved, but system complexity increases

Engineering Contradiction:
Improvecommunication efficiencyVSAvoidsystem complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent segments the communication system into distinct functional modules: buffer management units, band switching controllers, and packet transmission handlers. Each module has a specific function, making the overall complex system manageable through modular design. The buffer is divided into multiple segments that can be independently managed for different data streams.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentUS9420490B2Systems and methods for seamless data stream transfer during band switch between wireless stations
Publication Date: 2016.08.16 QUALCOMM INC
  • US9420490B2 patent drawing
  • US9420490B2 patent drawing
  • US9420490B2 patent drawing

AI summary

One innovation includes an apparatus, for wirelessly communicating with a communication system via a first wireless channel and a second wireless channel, including a memory unit that is configured to store a first data packet and a second data packet, the first data packet and the second data packet have consecutive sequence numbers. The apparatus further includes a processor configured to retrieve the first data packet and the second data packet from the memory unit, a transceiver that is configured to transmit the first data packet to the communication system via the first channel, to receive a first acknowledgement from the communication system and to transmit the second data packet to the communication system via the second channel after the processor detects that the first acknowledgement comprises a positive acknowledgement of the first reception information.