Memory Die Data Window Reservation for Peak Power Management
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Solution Overview
Problem
Existing peak power management (PPM) communication protocols in memory sub-systems suffer from inefficiencies due to fixed token circulation time periods, leading to wasted information transmission and resource consumption, particularly in multi-plane memory devices with varying current consumption patterns.
Innovation Solution
Implementing a PPM communication protocol with data window reservation, allowing memory devices to reserve a shorter token circulation time period and broadcast relevant information within a reserved data window, reducing unnecessary data transmission and optimizing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a fixed token circulation time period is used in PPM communication protocol, then all memory devices can operate in a synchronized manner, but information transmission becomes inefficient and resource consumption increases due to wasted data transmission periods
Solution Approach 1:
The patent applies dynamics by transitioning from a fixed token circulation time period to a variable token circulation time period that adapts to the actual data transmission needs of memory devices. The token circulation time is dynamically adjusted based on the amount of data to be transmitted and the transmission rate, allowing the system to optimize power consumption and transmission efficiency in real-time rather than operating with a static time period that causes wasted transmission cycles
Solution Approach 2:
The patent changes the parameter of token circulation time from a fixed value to a variable value that can be modified based on transmission requirements. By calculating the required token circulation time based on data amount and transmission rate, and adjusting the time period accordingly, the system achieves better power efficiency and transmission performance without sacrificing synchronization
2Reliability
If a longer token circulation time period is used to ensure complete data transmission, then all information can be transmitted reliably, but latency increases and system responsiveness decreases
Solution Approach 1:
The patent applies partial action by transmitting only the necessary amount of data during each token circulation period rather than forcing complete transmission regardless of data volume. The system calculates the optimal transmission amount based on the time period and transmission rate, allowing memory devices to transmit sufficient data without waiting for extended periods, thus reducing latency while maintaining reliable communication
Solution Approach 2:
The system dynamically adjusts the token circulation time period based on actual transmission needs, allowing shorter periods when data volume is low and longer periods when more data needs to be transmitted. This dynamic adjustment ensures reliable data transmission completeness while minimizing latency and improving system responsiveness
3Productivity
If data transmission continues without reservation机制, then all data can be transmitted, but resource consumption increases due to unnecessary transmission attempts during idle periods
Solution Approach 1:
The patent applies preliminary action by implementing a data window reservation mechanism where memory devices预先 reserve transmission windows before actual data transmission occurs. Devices indicate their data transmission needs in advance during the token circulation period, allowing the system to allocate transmission resources efficiently and avoid unnecessary transmission attempts during idle periods, thus reducing resource consumption while maintaining high throughput
Data Source
AI summary
A memory device includes memory dies, a first memory die of the memory dies including a memory array and control logic, operatively coupled with the memory array, to perform peak power management (PPM) operations including receiving a token from another memory die, in response to receiving the token, determining whether to reserve a data window during a token circulation time period having a first size determined based on a common clock signal shared among the memory dies and, in response to determining to reserve the data window, causing the data window to be reserved. The data window has a second size different from the first size determined based on the common clock signal. The operations further include causing a data frame to be generated within the data window. The data frame has a third size determined from the second size and includes current consumption information for the memory device.