Optimized EGPRS Access Request for MTC Devices
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Solution Overview
Problem
Current wireless communication systems face inefficiencies in how wireless devices, such as MTC devices, access and communicate with wireless access nodes, particularly in conveying capability information, which leads to increased power consumption and signaling overhead.
Innovation Solution
The implementation of an optimized EGPRS packet channel request message with a re-activated three-bit Short Access Request code point '100' that indicates device capabilities, allowing for immediate resource allocation based on these capabilities, reducing the need for additional transmissions and queries to the core network.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the wireless device uses the legacy two-phase access procedure to send capability information after receiving Immediate Assignment, then the capability information can be conveyed, but additional uplink radio block transmissions are required increasing power consumption and signaling overhead
Solution Approach 1:
The capability information is transmitted in advance within the access request message before receiving the Immediate Assignment. This preliminary action eliminates the need for subsequent capability reporting transmissions, reducing power consumption while ensuring the network has the necessary information for resource allocation.
Solution Approach 2:
The capability information is merged into the access request message itself, combining two separate transmissions (access request + capability report) into a single message. This reduces the number of uplink radio block transmissions and associated power consumption.
2Loss of information
If the wireless device sends capability information after Immediate Assignment, then the information can be conveyed, but extra signaling overhead and core network queries are required
Solution Approach 1:
Capability information is provided in advance within the access request message, allowing the wireless access node to immediately determine appropriate radio resource allocation without needing to query the core network or request additional capability reports.
Solution Approach 2:
The capability information extraction is performed directly from the access request message at the wireless access node, eliminating the need for additional core network queries and reducing signaling overhead throughout the network.
3Productivity
If the access request message includes device capabilities, then immediate resource allocation is possible, but the message structure becomes more complex
Solution Approach 1:
The capability information is merged into the existing access request message structure by utilizing available bit fields. This combining approach enables immediate resource allocation based on device capabilities without requiring a completely new message format or protocol.
Solution Approach 2:
The message structure is modified by changing the parameter content within existing fields of the access request message. Capability information is encoded using the available bit fields, allowing efficient resource allocation while maintaining compatibility with the existing message framework.
Data Source
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AI summary
A wireless device (e.g., Machine Type Communications (MTC) device), a wireless access node (e.g., Base Station Subsystem (BSS)), and various methods are described herein for utilizing an optimized access request message (e.g., an optimized Enhanced General Packet Radio Service (EGPRS) packet channel request message) within a wireless communication network.