Wireless Device Standby Time via Traffic Segmentation
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Solution Overview
Problem
Conventional wireless communication devices face reduced standby time due to the need to awaken and receive all broadcast or multicast traffic, even if only a portion is of interest, leading to unnecessary power consumption and reduced battery life.
Innovation Solution
Classifying broadcast or multicast traffic into different types and assigning distinct transmission schedules allows devices to wake only at intervals corresponding to the types of traffic they wish to receive, thereby reducing unnecessary wake times and conserving power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the mobile device wakes from power save mode at every designated interval to receive broadcast or multicast traffic, then the user receives all broadcast or multicast traffic, but the standby time of the mobile device is reduced due to unnecessary wake-ups
Solution Approach 1:
The patent segments broadcast or multicast traffic into different types (e.g., first type and second type traffic) with different transmission schedules. The access point buffers different types of traffic separately and transmits them at different intervals, allowing the mobile device to wake only at intervals corresponding to the types of traffic it wishes to receive, thereby extending standby time while maintaining reliable reception of desired traffic.
2Reliability
If the mobile device wakes from power save mode frequently to receive broadcast or multicast traffic, then all traffic is received, but power consumption increases
Solution Approach 1:
The patent segments traffic into different types with different transmission schedules, enabling the mobile device to wake only when needed for traffic types it interests itself in receiving. This reduces the frequency of wake-ups and consequently lowers power consumption while maintaining reliable reception of desired traffic.
Solution Approach 2:
The patent applies local quality by allowing different parts of the traffic stream (different traffic types) to have different reception characteristics. The mobile device can selectively wake for specific traffic types based on local interest, rather than uniformly waking for all traffic, thereby reducing overall power consumption.
3Device complexity
If the access point transmits all broadcast or multicast traffic at the same interval, then simple transmission scheduling is maintained, but the mobile device cannot extend standby time by filtering unwanted traffic
Solution Approach 1:
The patent segments the transmission schedule into multiple intervals corresponding to different traffic types. The access point buffers different types of traffic and transmits them at different intervals, enabling the mobile device to extend standby time by filtering unwanted traffic while maintaining manageable scheduling complexity through systematic organization.
Solution Approach 2:
The patent introduces dynamic transmission scheduling where different traffic types can have different transmission intervals. This dynamic approach allows the system to adapt to varying traffic patterns and device interests, enabling extended standby time while maintaining flexibility in the scheduling mechanism.
Data Source
AI summary
Broadcast or multicast traffic is classified into different types of traffic and different transmission schedules associated with each of the different types of traffic. The different types of broadcast and multicast traffic may be implemented in an 802.11-based system where an access point is configured to classify broadcast and multicast traffic into different types and assign different transmission schedules to each of the different traffic types. An associated wireless station may thereby wake from a power save mode only at intervals corresponding to delivery times of the types of traffic that the wireless station has elected to receive. In some aspects the different types of broadcast and multicast traffic may comprise user plane traffic and control plane traffic.