Wireless Paging Channel Segmentation for Idle and Connected Modes

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Solution Overview

Problem

In wireless communication systems, the existing paging channel is not suitable for user equipment in different operation states, leading to inefficient use of radio resources as the same channel is used for both idle and connected mode user equipment, resulting in suboptimal resource allocation and power management.

Innovation Solution

The method involves transmitting paging messages through different channels based on the connection state of user equipment, with user equipment in idle mode receiving messages through a dedicated channel and those in connected mode receiving messages through a shared channel, optimizing resource utilization by matching transmission channels with operation states.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the same paging channel is used for both idle mode and connected mode user equipment, then the paging channel structure is simple, but radio resources cannot be used efficiently and the channel is not suitable for features of different user equipment states

Engineering Contradiction:

Improvesuitability of paging channel for different user equipment statesVSAvoidpaging channel structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The paging channel is segmented into two distinct types: Paging Type 1 for idle mode user equipment and Paging Type 2 for connected mode user equipment. This segmentation allows each paging channel type to be optimized for its specific target audience, with Type 1 using broadcast channels for general paging and Type 2 using dedicated channels for connected users, thereby resolving the contradiction between adaptability and complexity.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different paging channel qualities are applied locally based on user equipment state: Paging Type 1 uses broadcast channels with system information suitable for idle mode devices, while Paging Type 2 uses dedicated channels with RRC connection information suitable for connected mode devices. This local quality approach ensures each paging channel is optimally suited for its specific use case without requiring complete restructuring of the overall paging system.

Inventive Principle:

Principle #3Local quality

2Productivity

If the same paging channel is used for all user equipment, then the implementation is simple, but resource allocation is suboptimal

Engineering Contradiction:

Improveresource allocation efficiencyVSAvoidpaging implementation simplicity

Core Design Contradiction:

ProductivityVSEase of operation

Solution Approach 1:

The paging system dynamically selects between Paging Type 1 and Paging Type 2 based on the user equipment's current state (idle or connected mode). This dynamic adaptation allows the system to automatically optimize resource allocation without complex manual configuration, achieving improved productivity while maintaining ease of operation through automated state-based channel selection.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system changes key parameters of the paging channel based on user equipment state: for idle mode devices, Paging Type 1 uses broadcast channel parameters and system information parameters; for connected mode devices, Paging Type 2 uses dedicated channel parameters and RRC connection parameters. These parameter changes enable optimal resource allocation while keeping the underlying implementation mechanism relatively simple through standardized parameter management.

Inventive Principle:

Principle #35Parameter changes

3Loss of energy

If user equipment in connected mode receives paging through the same channel as idle mode equipment, then the channel structure remains uniform, but power management and resource utilization are suboptimal

Engineering Contradiction:

Improvepower consumption of user equipmentVSAvoidchannel structure

Core Design Contradiction:

Loss of energyVSDevice complexity

Solution Approach 1:

The paging channel is segmented into Paging Type 1 for idle mode and Paging Type 2 for connected mode, allowing connected mode user equipment to use dedicated channels with DRX optimization that reduces power consumption by allowing longer sleep intervals, while idle mode equipment uses broadcast channels. This segmentation directly addresses the power management issue without requiring complete channel structure redesign.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

For connected mode user equipment using Paging Type 2, the system implements periodic paging with DRX (Discontinuous Reception) cycles, where user equipment can enter sleep mode between paging occasions. This periodic action significantly reduces power consumption for connected mode devices while maintaining reliable page delivery, resolving the contradiction between energy efficiency and channel structure complexity.

Inventive Principle:

Principle #19Periodic action

Data Source

PatentUS8090390B2Method of transmitting and receiving paging messages in wirelss communication system

Publication Date: 2012.01.03 3G LICENSING SA

AI summary

A method of transmitting and receiving paging messages in a wireless communication system is disclosed. The method of transmitting paging messages in a wireless communication system comprises transmitting paging messages to a plurality of user equipments from a network of the wireless communication system, wherein the network transmits the paging messages to different user equipments, which are in different connection states, through different channels.