Modified RRRM for Simultaneous Release of Multiple Packet Data Sessions

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Solution Overview

Problem

Current CDMA2000 technology requires mobile stations to send multiple Resource Release Request Messages (RRRMs) to release multiple packet data service instances, leading to wastage of bandwidth and processing resources due to the need for multiple return messages from the base station.

Innovation Solution

A modified RRRM message is introduced, featuring a main service indicator field and multiple purge field indicators, allowing for the simultaneous release of multiple packet data service instances, reducing the number of messages required.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If multiple RRRM messages are sent to release multiple packet data service instances, then each service instance can be released individually, but bandwidth and processing resources are wasted due to multiple message transmissions

Engineering Contradiction:

Improveservice instance release completenessVSAvoidbandwidth and processing resource waste

Core Design Contradiction:

ReliabilityVSLoss of energy

Solution Approach 1:

The patent combines multiple service instance release requests into a single RRRM message by introducing a service instance list field that can contain multiple service instance identifiers. This allows the mobile station to release multiple packet data service instances simultaneously through one message transmission, rather than sending separate RRRM messages for each instance, thereby reducing bandwidth consumption and processing overhead while maintaining complete release of all specified service instances

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The RRRM message structure is enhanced to serve multiple functions: it can release a single service instance or multiple service instances simultaneously through the optional service instance list field. This multi-functional capability allows the same message type to adapt to different release scenarios (single instance or multiple instances), improving resource efficiency without compromising the reliability of service instance release

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS7787413B2Method for mobile station request release of multiple packet data service sessions simultaneously using resource release request messages

Publication Date: 2010.08.31 APPLE INC

AI summary

An apparatus, a method, and a computer program are provided for increasing the efficiency of Radio Frequency (RF) resources. Specifically, a modified Resource Release Request Message (RRRM) is utilized. The modified RRRM incorporates several additional fields that allow for the release of multiple service instances at approximately the same time. The simultaneous or near simultaneous release of multiple service instance is more efficient that the traditional RRRM for the release of a single service instance. Therefore, limited RF resources can be better preserved.