M2M Device Identifier Sharing via Offset Parameters
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Solution Overview
Problem
Current wireless communication systems, such as WiMAX and LTE, face challenges in providing sufficient addressing space for a large number of Machine to Machine (M2M) devices, as simply increasing the addressing space can impact the functionality of non-M2M devices.
Innovation Solution
The proposed solution involves a base station assigning an identical valid periodicity parameter and different valid offset parameters to wireless communication devices sharing the same device identifier, allowing multiple M2M devices to share the same identifier within a limited addressing space without affecting non-M2M devices, and dynamically adjusting these parameters based on device density and application types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the addressing space is increased to accommodate more M2M devices, then the number of identifiable devices increases, but the compatibility with existing non-M2M devices deteriorates
Solution Approach 1:
The device identifier space is segmented into two parts: a public identifier portion that maintains compatibility with existing non-M2M devices, and a private identifier portion that provides additional addressing capacity for M2M devices. This segmentation allows the system to support both legacy and M2M devices simultaneously without requiring a complete overhaul of the addressing scheme.
Solution Approach 2:
The M2M-specific identifier extensions are nested within the existing device identifier structure. The additional identifier bits are embedded in a way that preserves the original identifier format for non-M2M devices while providing extended addressing capability for M2M devices through the nested identifier bits.
2Productivity
If device identifiers are reused among multiple M2M devices to conserve addressing space, then the addressing space efficiency improves, but the ability to uniquely identify individual devices deteriorates
Solution Approach 1:
The system employs periodic identifier validation and time-stamped identifier assignments. M2M devices use identifiers valid only during specific time periods, and the base station tracks identifier validity periods. This periodic approach allows identifier reuse across different time windows while maintaining unique identification capability within each validity period through the combination of identifier and timestamp.
Solution Approach 2:
The identifier assignment system is dynamic rather than static. The base station dynamically assigns and revokes identifiers based on device activity, validity periods, and network conditions. This dynamic management allows the same identifier to be assigned to different devices at different times, maximizing addressing space efficiency while maintaining the ability to uniquely identify active devices through the current valid identifier assignment.
Data Source
AI summary
Identifier-sharing methods for wireless communication devices are proposed along with wireless communication devices and base stations using the same method. The proposed methods allow multiple M2M devices to share the same device identifier. The shared device identifier is valid for only one M2M device in a given time interval by a mechanism of assigning the same periodicity value and different offset values to the M2M devices associated with the shared device identifier. The proposed methods can also categorize M2M devices into different classes respectively based on their M2M application types. By adjusting periodicity value associated with the shared device identifier, a class associated with delay-tolerable applications can be allocated with more M2M devices sharing the same device identifier in comparison to the another class associated with delay-sensitive applications.