Overload Marker Symbol for Power Save in Wireless Transmissions
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Solution Overview
Problem
In wireless communication networks, particularly in WLANs, high priority payloads face delays and high power consumption due to existing transmission methods, which do not effectively manage downlink transmissions during ongoing downlink activities.
Innovation Solution
The implementation of power consumption mitigation techniques using overload marker symbols (OMS) and opportunistic OMS, allowing devices to transition between power states based on the presence of high priority payloads, reducing idle listening and optimizing power usage during downlink transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the AP transmits HP packets in the next earliest transmission opportunity when no DL transmission is ongoing, then the delay for HP packets is reduced, but the receiving STA must remain in awake state frequently increasing power consumption
Solution Approach 1:
The AP transmits an OMS in advance before actual DL transmissions to notify STAs about upcoming HP packet transmissions. This allows STAs to transition from sleep to awake state only when necessary, reducing unnecessary power consumption while maintaining timely reception of HP packets.
Solution Approach 2:
The OMS acts as an intermediary signal between the AP and STAs, providing advance notification about HP packet transmissions. This intermediary mechanism enables STAs to optimize their power states without missing critical high-priority data.
2Loss of time
If the AP transmits HP packets during ongoing DL transmission by overloading, then the delay for HP packets is reduced, but the receiving STA cannot enter lower power state increasing power consumption
Solution Approach 1:
The OMS is transmitted before the overloaded DL transmission to preemptively notify STAs about upcoming HP packets. This advance notification allows STAs to maintain awake state only during necessary periods, even when overloading occurs, thereby reducing overall power consumption.
Solution Approach 2:
The OMS serves as an intermediary warning signal that enables STAs to prepare for overloaded transmissions. By receiving OMS in advance, STAs can optimize their power state management during overloaded conditions without missing HP packets.
3Reliability
If the STA remains in awake state to receive potential HP packets, then the reliability of receiving HP packets is improved, but the power consumption increases
Solution Approach 1:
The OMS provides advance notification before actual HP packet transmissions, allowing STAs to transition to awake state only when HP packets are imminent. This ensures reliable reception of HP packets while minimizing the duration of awake state and reducing power consumption.
Solution Approach 2:
The OMS mechanism provides feedback to STAs about upcoming HP packet transmissions. This feedback enables STAs to dynamically adjust their power states based on actual network conditions, ensuring reliable HP packet reception only when necessary.
4Use of energy by moving object
If the STA transitions to lower power state immediately after receiving preamble, then the power consumption is reduced, but the STA may miss the OMS and subsequent HP packets
Solution Approach 1:
The OMS is transmitted in advance before actual DL transmissions, allowing STAs to remain in lower power states longer while still receiving critical notifications. This advance notification ensures STAs don't miss HP packets even when transitioning to sleep state early.
Solution Approach 2:
The OMS acts as an intermediary signal that bridges the gap between early power state transitions and HP packet receptions. By providing advance notification, the OMS ensures STAs can sleep earlier without missing critical data.
Data Source
AI summary
Some aspects of this disclosure include apparatuses and methods for implementing power consumption mitigation techniques for downlink transmission of a high priority payload in wireless communication networks. For example, an electronic device includes a transceiver and a processor. The processor is configured to receive, using the transceiver and from a second electronic device, a preamble associated with a first payload. The processor is further configured to determine, based at least on the preamble, that a second payload is to be received. The processor is further configured to receive, from the second electronic device, an overload marker symbol (OMS) and determine, based at least on the OMS, whether the second payload is to be received following the OMS. The processor is further configured to transition the transceiver to, or maintain the transceiver in, an awake state in response to determining that the second payload is to be received following the OMS.