UE State Transition for Fast PoC Session Initiation

Solution Overview

Problem

Current Push-to-Talk over Cellular (PoC) services in UMTS networks experience long setup times due to continuous allocation of dedicated channels, leading to high energy consumption and inefficient use of network resources, resulting in a poor user experience.

Innovation Solution

Implementing a state transitioning regime in User Equipment (UE) that maintains intermediate states instead of idle states, allowing for quicker transitions to dedicated channels, thereby reducing power consumption and optimizing network resource usage while ensuring rapid session initiation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If a dedicated physical channel is continuously allocated for each UE participating in the data service, then the response time is short, but the energy consumption is high and network resources are inefficiently used

Engineering Contradiction:

Improveresponse timeVSAvoidenergy consumption

Core Design Contradiction:

SpeedVSUse of energy by moving object

Solution Approach 1:

The system performs preliminary actions by maintaining UEs in an intermediate state (CELL_FACH) where they are pre-configured with dedicated channel parameters but not actively transmitting. This allows near-instant transition to active transmission when needed, achieving short response times without continuous dedicated channel allocation. The intermediate state acts as a pre-positioned configuration that can be quickly activated.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent implements dynamic state management where UEs transition between different radio resource control states (idle, intermediate/CELL_FACH, and dedicated/CELL_DCH) based on service requirements. This dynamic approach allows the system to adapt resource allocation to actual traffic needs, maintaining low power consumption during idle periods while enabling rapid activation when data transmission is required.

Inventive Principle:

Principle #15Dynamics

2Speed

If a dedicated physical channel is continuously allocated for each UE participating in the data service, then the response time is short, but the network resources are inefficiently used

Engineering Contradiction:

Improveresponse timeVSAvoidnetwork resource efficiency

Core Design Contradiction:

SpeedVSProductivity

Solution Approach 1:

The system performs preliminary actions by maintaining UEs in an intermediate state (CELL_FACH) where they are pre-configured with dedicated channel parameters but not actively transmitting. This allows near-instant transition to active transmission when needed, achieving short response times without continuous dedicated channel allocation. The intermediate state acts as a pre-positioned configuration that can be quickly activated.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent implements dynamic state management where UEs transition between different radio resource control states (idle, intermediate/CELL_FACH, and dedicated/CELL_DCH) based on service requirements. This dynamic approach allows the system to adapt resource allocation to actual traffic needs, maintaining low power consumption during idle periods while enabling rapid activation when data transmission is required.

Inventive Principle:

Principle #15Dynamics

3Speed

If the modem continuously uses the cellular network in a dedicated channel state, then the response time is short, but the battery time is reduced

Engineering Contradiction:

Improveresponse timeVSAvoidbattery time

Core Design Contradiction:

SpeedVSDuration of action of moving object

Solution Approach 1:

The system performs preliminary actions by maintaining UEs in an intermediate state (CELL_FACH) where they are pre-configured with dedicated channel parameters but not actively transmitting. This allows near-instant transition to active transmission when needed, achieving short response times without continuous dedicated channel allocation. The intermediate state acts as a pre-positioned configuration that can be quickly activated.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent implements dynamic state management where UEs transition between different radio resource control states (idle, intermediate/CELL_FACH, and dedicated/CELL_DCH) based on service requirements. This dynamic approach allows the system to adapt resource allocation to actual traffic needs, maintaining low power consumption during idle periods while enabling rapid activation when data transmission is required.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentEP3573377B1A system and method for short response time data services through cellular networks

Publication Date: 2020.11.18 ELBIT SYST LAND & C4I LTD

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AI summary

A User Equipment (UE) comprising: a modem capable of connecting to a Universal Mobile Telecommunications System (UMTS) cellular network for transmitting and receiving data, the modem having an idle state, one or more intermediate states, and a dedicated channel state, wherein: (a) in the idle state the modem is not connected to the UMTS cellular network, (b) in the dedicated channel state the modem is connected to the UMTS cellular network via a dedicated communication channel, and (c) in each of the intermediate states the modem is not connected to the UMTS cellular network via the dedicated communication channel and a first time-period required to transition from the corresponding intermediate state to the dedicated channel state is shorter than a second time-period required to transition from the idle state to the dedicated channel state; and a processing resource configured to: maintain a state transitioning regime of the UE, wherein the state transitioning regime includes preventing at least one transition of the UE to an idle state for at least one time-period.