Wake-Up Signal Construction for Multi-Standard Wireless Receivers
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Solution Overview
Problem
Existing wireless communication devices face issues with erroneous wake-up of receivers due to misidentification of wake-up signals across different standards, leading to increased power consumption and coexistence problems in multi-standard environments.
Innovation Solution
A method of constructing wake-up signals by selecting sequences of symbols, dividing them into groups, and modulating them to indicate specific standards, allowing for precise waking of corresponding receivers, thereby reducing erroneous wake-ups and improving power efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a wake-up radio is used to reduce power consumption, then power consumption is reduced, but erroneous wake-up of receivers occurs due to misidentification of wake-up signals across different standards
Solution Approach 1:
The wake-up signal is segmented into multiple fields including a standard identification field that specifically identifies the communication standard. This segmentation allows the wake-up radio to accurately identify which standard the signal belongs to, preventing erroneous wake-up of receivers for wrong standards while maintaining low power consumption operation.
Solution Approach 2:
A standard identification field is introduced as an intermediary element within the wake-up signal structure. This intermediary field acts as a mediator that enables the wake-up radio to distinguish between different communication standards before activating the appropriate receiver, thereby resolving the contradiction between power savings and accurate identification.
2Adaptability or versatility
If multiple receivers support different standards, then versatility is improved, but coexistence issues and interference occur between standards
Solution Approach 1:
The wake-up signal structure is segmented to include dedicated standard identification fields that clearly demarcate which communication standard the signal pertains to. This segmentation enables receivers to accurately identify and respond only to signals intended for their supported standards, preventing interference and coexistence issues between different standards while maintaining multi-standard versatility.
Solution Approach 2:
Different portions of the wake-up signal are assigned different local qualities or characteristics specific to each communication standard. The standard identification field provides local quality information that enables each receiver to recognize and process only the signals relevant to its standard, thereby avoiding interference while supporting multiple standards.
3Productivity
If wake-up signals are used to activate receivers, then productivity is improved, but erroneous wake-up increases power consumption
Solution Approach 1:
The wake-up signal is divided into distinct segments including a standard identification field that enables accurate classification. This segmentation allows the wake-up radio to efficiently identify the correct standard and activate only the appropriate receiver, improving communication productivity while avoiding the energy waste associated with erroneous wake-up events.
Solution Approach 2:
The standard identification field provides feedback information to the wake-up radio about which communication standard the wake-up signal belongs to. This feedback mechanism enables the wake-up radio to make informed decisions about which receiver to activate, thereby improving productivity while minimizing energy loss from incorrect wake-up actions.
Data Source
AI summary
A method is disclosed of constructing a wake-up signal for waking up one or more of a plurality of wireless communication receivers, wherein each of the plurality of wireless communication receivers is adapted to receive in accordance with respective standard. The method comprises selecting a collection of sequences of symbols and dividing the collection of sequences into a plurality of groups, wherein all sequences of a group comprise a same first set of symbols. The method also comprises selecting one of the groups, and letting the first set of symbols of the selected group indicate one or more standards corresponding to the one or more of the wireless communication receivers to be woken up. The wake-up signal is then constructed based on a sequence of symbols of the selected group. The sequences of symbols of the collection may be of different lengths and the selected group may comprise sequences of symbols of different lengths. In such embodiments, the step of dividing the collection of sequences into a plurality of groups may comprise letting a first sequence and a second sequence (wherein the first sequence has a shorter length than the second sequence) belong to a same group if the first sequence and any part of the second sequence (wherein the part has the same length as the first sequence) differ in less than a number of positions. Corresponding arrangement and computer program product are also disclosed.