Dedicated Uplink Resources for Wireless Device Communication
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Solution Overview
Problem
Current wireless communication systems face inefficiencies in transmitting small amounts of data frequently, particularly for devices in a sleep state, due to high signaling overhead and limited support for active and sleep states, which restricts the number of devices that can be supported simultaneously.
Innovation Solution
Implementing a dedicated uplink timing frequency structure with expression advertisement intervals that allow wireless communications devices to transmit small amounts of data using dedicated resources, regardless of their operational state, and utilizing OFDM tone-symbols for efficient communication, with the access point receiving and processing information from multiple devices through these dedicated resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If devices use regular wide-area-network traffic channels for location updates, then communication can take place, but control messaging overhead becomes very costly
Solution Approach 1:
The patent segments communication resources by creating dedicated uplink resources specifically for location updates and short messages, separating them from regular traffic channels. This segmentation allows efficient handling of small data transfers without burdening the general traffic channel infrastructure.
Solution Approach 2:
The patent implements periodic location update intervals where devices transmit location information at predetermined intervals rather than continuously. This periodic action reduces the frequency of transmissions and associated overhead while maintaining communication reliability.
2Ease of operation
If devices transition to active state to send short messages, then dedicated resources are available, but the number of devices that can be supported is relatively limited
Solution Approach 1:
The patent introduces a new dimension to resource allocation by allowing devices to access dedicated uplink resources while remaining in sleep state, rather than requiring transition to active state. This dimensional change in state-resource mapping dramatically increases the number of supported devices.
Solution Approach 2:
The dedicated uplink resources serve multiple functions: they support both sleep state devices sending short messages and active state devices, and can handle both location updates and peer discovery information. This multi-functionality increases resource utilization efficiency.
3Ease of operation
If devices in sleep state use complex hand-shaking procedure to transition to active state, then dedicated traffic channel resources can be assigned, but overhead associated with sending short messages becomes considerable
Solution Approach 1:
The patent performs preliminary allocation of dedicated uplink resources during device registration, before the device needs to send any messages. This preliminary action eliminates the need for complex hand-shaking procedures at message transmission time, reducing overhead significantly.
Solution Approach 2:
The patent extracts the resource allocation function from the active state transition process, allowing sleep state devices to have pre-allocated resources without needing to transition to active state. This extraction separates resource allocation from state management.
4Speed
If the system supports frequent updates of very short messages, then location-based applications can function, but resource efficiency decreases when using regular traffic channels
Solution Approach 1:
The patent applies local quality by creating specialized uplink resources optimized specifically for short messages and location updates, rather than using general-purpose traffic channels. This localization of resource quality to match the specific communication needs improves efficiency.
Data Source
AI summary
Methods and apparatus for efficiently communicating small amounts of information relatively frequently in a wireless communications system are described. An access point's uplink timing frequency structure includes a set of dedicated uplink communications resources, e.g., expression advertisement interval air link resources, which may be in addition to regular traffic channel resources. The set of dedicated uplink communications resources comprises a small fraction of the total uplink communications resources. An individual one of the set of dedicated uplink communications resources can carry a small amount of information bits. An expression advertisement interval occurs relatively frequently. A wireless communications device, registered with the access point, is allocated one of the set of dedicated uplink resources. The wireless communications device can transmit information using its allocated resource in both a sleep state and an active state.