Inter-chip Data Frame Preamble for Power-State Transition
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless communication systems, power-managed integrated circuits (ICs) face challenges in efficiently transitioning between power states while maintaining data integrity during inter-chip communications, often resulting in the loss of payload data when exiting a low-power state.
Innovation Solution
A method where a peer IC prepends a discardable preamble of a predefined size to data frames transmitted to a power-managed IC, allowing the IC to discard only the preamble during state transition without losing payload data, by ensuring the discarded portion is no greater than the preamble size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the power-managed IC exits the low-power state to receive data, then data communication capability is improved, but data loss occurs during the transition period
Solution Approach 1:
The peer IC performs preliminary action by prepending a discardable preamble to the data frame before transmission. This preamble is specifically designed to be discarded by the power-managed IC during its exit from low-power state, ensuring that any data loss occurs only in the preamble portion and not in the actual payload data. This preliminary structuring of the data frame protects against data loss during the vulnerable transition period.
2Use of energy by moving object
If the power-managed IC remains in low-power state to conserve energy, then power consumption is reduced, but data reception capability is lost
Solution Approach 1:
The system implements dynamic power state management where the power-managed IC can transition between low-power and active states based on communication needs. The peer IC dynamically adjusts the data frame structure by adding discardable preambles when the power-managed IC is in low-power state, and uses standard frames when fully active. This dynamic adaptation allows the system to optimize power consumption while maintaining reliable data reception capability when needed.
3Reliability
If the discardable preamble size is increased to cover all possible transition losses, then data integrity is improved, but transmission efficiency deteriorates
Solution Approach 1:
The system changes the parameter of preamble size dynamically based on the power state of the receiving IC. When the power-managed IC is in low-power state, a larger discardable preamble is used to ensure complete coverage of potential data loss during transition. When the IC is fully active, the preamble size is reduced or eliminated entirely. This parameter adjustment optimizes both data integrity and transmission efficiency by matching the preamble size to the actual risk level.
Data Source
AI summary
A method includes inter-chip data communications between a power-managed integrated circuit (IC) and a peer IC. The peer IC generates a data frame and prepends a discardable preamble of a predefined size to a payload of the data frame. The predefined size is a size not less than a size of data discarded by the power-managed IC upon the power-managed IC receiving a data frame while in a low-power state. The peer IC transmits the data frame to the power-managed IC. The power-managed IC, while in a low-power state, may receive the data frame from the peer IC and in response to receiving the data frame, begin exiting the low-power state. The power-managed IC, while exiting the low-power state, may discard a portion of the data frame such as for example, some or all of the discardable preamble, without discarding payload.