Base Station Paging Area Parameter Management for Wireless Handover

Solution Overview

Problem

Current wireless communication systems face inefficiencies in managing and transferring neighbor cell parameters, particularly in heterogeneous access technologies, leading to excessive signaling capacity usage and prolonged measurement times, which affects handover performance and energy consumption.

Innovation Solution

A method for parameter management in wireless cellular communications systems involves recording and transferring paging area parameters, including tracking area codes, between base stations, reducing the need for extensive measurements by user equipment and optimizing data storage and transfer between base stations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If user equipment performs extensive measurements on neighbor cells, then handover decision accuracy is improved, but measurement time and energy consumption increase

Engineering Contradiction:

Improvehandover decision accuracyVSAvoidmeasurement time

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The base station performs measurements on neighbor cells in advance and stores the results. When handover is needed, the pre-measured data is directly used, eliminating the need for real-time measurements by user equipment. This resolves the contradiction by performing the measurement action beforehand, achieving both accurate handover decisions and reduced measurement time.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The base station acts as an intermediary that performs measurements on behalf of the user equipment. Instead of the UE directly measuring neighbor cells, the base station collects measurement data and provides it to the UE, reducing the measurement burden on the UE while maintaining handover accuracy.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Measurement precision

If user equipment performs extensive measurements on neighbor cells, then handover decision accuracy is improved, but energy consumption increases

Engineering Contradiction:

Improvehandover decision accuracyVSAvoidenergy consumption

Core Design Contradiction:

Measurement precisionVSUse of energy by moving object

Solution Approach 1:

The base station performs measurements on neighbor cells in advance and stores the results. When handover is needed, the pre-measured data is directly used, eliminating the need for real-time measurements by user equipment. This resolves the contradiction by performing the measurement action beforehand, achieving both accurate handover decisions and reduced measurement time.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The base station acts as an intermediary that performs measurements on behalf of the user equipment. Instead of the UE directly measuring neighbor cells, the base station collects measurement data and provides it to the UE, reducing the measurement burden on the UE and thereby reducing energy consumption.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Stability of the object's composition

If base stations transfer neighbor cell parameters frequently, then network synchronization is improved, but signaling capacity usage increases

Engineering Contradiction:

Improvenetwork synchronizationVSAvoidsignaling capacity usage

Core Design Contradiction:

Stability of the object's compositionVSQuantity of substance

Solution Approach 1:

The patent applies different update strategies to different types of parameters. Frequently changing parameters are updated only when necessary, while stable parameters are updated less frequently. This local differentiation in update quality/responsiveness optimizes the balance between synchronization and signaling usage.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

Instead of transferring all neighbor cell parameters in every update cycle, the base station transfers only the necessary subset of parameters. This partial action approach maintains network synchronization where needed while reducing overall signaling capacity consumption.

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentUS9338708B2Method and apparatus of communication

Publication Date: 2016.05.10 HUAWEI TECH CO LTD

AI summary

A method for parameter management in a wireless cellular communications system, which includes a first base station and a second base station equipped for communications in the communications system, records one or more paging area parameters broadcast by a base station serving a neighbor cell of a cell served by the first base station. The paging area parameters form part of a relation of the first base station and are maintained by the first base station. The method further includes transferring the recorded paging area parameters from the first base station to the second base station.