Wireless Device Cell Selection Using Access Node Loading Criteria

Solution Overview

Problem

Wireless devices face delays and battery power wastage when attempting to establish communication with access nodes, as they often select nodes with the strongest signal level without considering loading information, leading to rejected initial requests and subsequent node switching.

Innovation Solution

A wireless device receives synchronization and loading information from multiple access nodes, determines the node with the highest cross-correlation and suitable loading criteria, and initiates communication with the node that meets specific loading criteria to avoid rejection and optimize network connection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If the wireless device selects the access node with the strongest signal level, then the signal quality is improved, but the communication request may be rejected due to heavy loading, causing delay and battery power wastage

Engineering Contradiction:

Improvesignal levelVSAvoiddelay in establishing communication

Core Design Contradiction:

Illumination intensityVSLoss of time

Solution Approach 1:

The wireless device performs preliminary actions by receiving loading information from multiple access nodes before selecting an access node for communication. This allows the device to anticipate potential rejection scenarios and proactively choose an access node with acceptable loading conditions, thereby avoiding the time loss associated with request rejection and subsequent reselection.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

Loading information serves as an intermediary parameter that mediates between signal strength and communication success. By introducing this additional criterion, the device can balance the desire for strong signal quality with the need to avoid rejection due to heavy loading, effectively resolving the contradiction between selecting the strongest signal and ensuring successful communication establishment.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Illumination intensity

If the wireless device selects the access node with the strongest signal level, then the signal quality is improved, but battery power is wasted due to repeated attempt and node switching

Engineering Contradiction:

Improvesignal levelVSAvoidbattery power consumption

Core Design Contradiction:

Illumination intensityVSUse of energy by moving object

Solution Approach 1:

The wireless device performs preliminary actions by receiving loading information from multiple access nodes before selecting an access node for communication. This allows the device to anticipate potential rejection scenarios and proactively choose an access node with acceptable loading conditions, thereby avoiding the energy waste associated with request rejection and subsequent reselection.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

Loading information serves as an intermediary parameter that mediates between signal strength and communication success. By introducing this additional criterion, the device can balance the desire for strong signal quality with the need to avoid rejection due to heavy loading, effectively resolving the contradiction between selecting the strongest signal and ensuring successful communication establishment.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Reliability

If the wireless device attempts to communicate with the first selected access node after rejection, then it must identify another access node, but this increases device complexity in terms of node identification and selection process

Engineering Contradiction:

Improvecommunication establishmentVSAvoidnode identification and selection process

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The wireless device performs preliminary actions by receiving loading information from multiple access nodes before selecting an access node for communication. This allows the device to anticipate potential rejection scenarios and proactively choose an access node with acceptable loading conditions, thereby avoiding the time loss associated with request rejection and subsequent reselection.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS9119112B1Managing initial cell selection in a wireless communication network

Publication Date: 2015.08.25 SPRINT SPECTRUM LLC

AI summary

Synchronization information and access node identification information are transmitted from a first access node and a second access node. It is determined that loading information of the first access node meets a first loading criteria and loading information of the second access node meets a second loading criteria. A message is transmitted from the first access node comprising the determination that the loading information of the first access node meets the first loading criteria and the loading information of the second access node meets the second loading criteria. The wireless device then determines the second access node identification based on the message and on the synchronization information. An access request is received at the second access node to initiate a communication session between a wireless device and the second access node.