Wireless Communication Device ACK Bit Management
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Solution Overview
Problem
In multi-hop wireless communication networks, existing methods for acknowledging signal arrival, such as adding an ACK field to normal communication frames, lead to increased power consumption and potential error determination due to inconsistent ACK bit allocation and communication slot allocation methods.
Innovation Solution
A wireless communication device with a communication manager, data manager, and message processor that manages and processes acknowledgement information by using a unique ACK bit sequence, allowing for efficient ACK transmission and reception, even in cases where nodes have different communication slot allocations, thereby reducing power consumption and error determination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If ACK is transmitted from one communication leader to a plurality of communication members in a single packet using broadcast/multicast, then communication efficiency is improved, but power consumption increases and error determination occurs due to inconsistent ACK bit allocation
Solution Approach 1:
The patent segments the ACK transmission by introducing a first period for upward message transmission from child nodes and a second period for downward ACK transmission from parent nodes. This temporal segmentation allows nodes to transmit and receive in dedicated time slots, improving communication efficiency while reducing power consumption by keeping radio circuits idle during non-dedicated periods.
Solution Approach 2:
The patent implements periodic action by dividing communication into distinct time periods: a first period for child nodes to transmit messages upward, and a second period for parent nodes to transmit ACKs downward. This periodic structure ensures consistent ACK bit allocation and enables nodes to power down during inactive periods, resolving the contradiction between communication efficiency and power consumption.
2Reliability
If both leader and members are required to be in a state where they can communicate with one another in all cycles, then communication reliability is improved, but power consumption increases
Solution Approach 1:
The patent applies periodic action by creating distinct communication periods: child nodes are active during the first period to transmit messages, then can power down; parent nodes are active during the second period to transmit ACKs. This periodic activation maintains communication reliability through dedicated transmission/reception windows while significantly reducing power consumption compared to continuous communication readiness.
Solution Approach 2:
The patent segments the communication cycle into separate functional periods, allowing different nodes to be active at different times. Child nodes transmit in the first period, parent nodes transmit ACKs in the second period. This temporal segmentation ensures reliable communication during active periods while enabling power savings during inactive periods, resolving the reliability-power consumption contradiction.
3Adaptability or versatility
If allocation method of communication slots is different, then adaptability to various network configurations is improved, but consistency of ACK bit is not established and error determination occurs
Solution Approach 1:
The patent segments communication into dedicated time periods with assigned roles: child nodes transmit in the first period, parent nodes transmit ACKs in the second period. This temporal segmentation establishes consistent ACK bit allocation rules that work across different network configurations, preventing error determination while maintaining adaptability through flexible node role assignment.
Solution Approach 2:
The patent implements periodic action with structured time periods that ensure ACK bit consistency. The first period is dedicated to upward message transmission, the second period to downward ACK transmission. This periodic structure provides consistent ACK allocation regardless of network configuration variations, resolving the contradiction between adaptability and reliability.
Data Source
AI summary
A wireless communication device includes a memory and a wireless interface and processing circuitry. The memory configured to store data to be transmitted and received. The wireless interface configured to transmit and receive a wireless signal. The processing circuitry coupled to the memory and configured to receive a message from another wireless device, including destination information and acknowledgement information, via the wireless interface, set, in a first period being a period in which the message from a child node which transmits the message upward while setting the child node itself as a destination is received, the acknowledgement information with respect to data received from the child node, process the message including the destination information and the acknowledgement information, and transmit a message including the set acknowledgement information via the wireless interface to another wireless device.