Accelerated System Access Procedure for Wireless Mobile Stations
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Solution Overview
Problem
Current wireless telecommunications systems face inefficiencies in radio resource utilization between mobile stations and access nodes due to legacy access procedures that require excessive signaling and payload overhead, leading to suboptimal packet data channel utilization and increased power consumption for small data transmissions.
Innovation Solution
The implementation of an Accelerated System Access Procedure (ASAP) that involves a mobile station transmitting a packet channel request with a unique identifier and an access node responding with an Immediate Assignment message, allowing for reduced signaling and increased payload capacity, thereby improving radio resource utilization and contention resolution efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the legacy access procedure is used, then the mobile station can transmit data to the access node, but the signaling overhead is excessive and radio resource utilization efficiency is reduced
Solution Approach 1:
The patent extracts the unique identifier (TLLI) from the data payload and places it in the packet channel request message itself. This allows the access node to identify and resolve contention for multiple mobile stations simultaneously without requiring separate signaling exchanges, thereby reducing overall signaling overhead and improving radio resource utilization efficiency.
Solution Approach 2:
The patent merges the contention resolution information with the packet channel request message by including the TLLI directly in the request. This consolidation eliminates the need for separate contention resolution signaling steps, reducing the number of message exchanges between mobile stations and the access node while maintaining proper conflict resolution functionality.
2Loss of time
If the legacy access procedure is used, then the mobile station can complete data transmission, but the contention resolution process is delayed
Solution Approach 1:
The patent applies preliminary action by including the TLLI in the initial packet channel request message, enabling the access node to perform contention resolution in advance. The access node can identify all contending mobile stations and resolve conflicts before data transmission begins, eliminating delays that would otherwise occur during the transmission process.
Solution Approach 2:
The TLLI acts as an intermediary identifier that enables the access node to mediate contention resolution efficiently. By having this unique identifier available in the request message, the access node can quickly match and resolve conflicts between multiple mobile stations without requiring additional signaling rounds, thereby accelerating the contention resolution process.
3Measurement precision
If more signaling is used in the access procedure, then the mobile station can be identified accurately, but the radio resource utilization efficiency decreases
Solution Approach 1:
The patent uses the TLLI as a copy of the mobile station's unique identifier that can be embedded directly in the packet channel request message. This allows the access node to accurately identify the mobile station without requiring additional signaling messages, as the identifier is self-contained within the original request transmission.
Data Source
AI summary
A mobile station (e.g., an MTC device), an access node (e.g., BSS) and various methods are described herein for implementing an accelerated system access procedure (ASAP) which improves the radio resource utilization efficiency by having: (1) the mobile station transmit a packet channel request to the access node, where the packet channel request includes a unique identifier associated with the mobile station, and (2) the access node after receiving the packet channel request transmits an Immediate Assignment (IA) message to the mobile station, where the IA message includes the unique identifier associated with the mobile station.