Temporary Resource Request Identifier Allocation in Cellular Handovers

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Solution Overview

Problem

In cellular wireless communication networks, the existing methods for allocating temporary resource request identifiers often lead to conflicts and latency issues, particularly during time-critical handovers, due to the finite number of identifiers and random selection processes, which can hinder successful resource requests from wireless communication devices.

Innovation Solution

A method where source base stations identify and allocate temporary resource request identifiers from a list that includes part-time and full-time allocations, rotating these identifiers among source base station groupings and imposing usage limitations within specific communication time intervals to minimize conflicts and optimize resource access.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If a finite number of temporary resource request identifiers are used for random access channel preambles, then the system can support multiple simultaneous requests from multiple wireless communication devices, but conflicts occur when multiple devices select the same identifier, precluding successful resource requests

Engineering Contradiction:

Improvenumber of temporary identifiersVSAvoidsuccess rate of resource requests

Core Design Contradiction:

Quantity of substanceVSReliability

Solution Approach 1:

The patent implements dynamic allocation of temporary resource request identifiers by source base stations rather than static random selection by wireless devices. The source base station allocates identifiers from an available pool based on current network conditions and device-specific parameters, making the allocation adaptive and reducing the probability of conflicts while maintaining support for multiple simultaneous requests

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system incorporates feedback mechanisms where the source base station monitors identifier allocation outcomes and adjusts the available pool of temporary identifiers accordingly. When conflicts are detected or resource request success rates decline, the source base station modifies allocation strategies and identifier pool management to improve reliability

Inventive Principle:

Principle #23Feedback

2Ease of operation

If temporary resource request identifiers are allocated randomly by wireless communication devices, then the allocation process is simple and decentralized, but latency increases during time-critical handovers when identifiers must be requested and assigned

Engineering Contradiction:

Improvesimplicity of identifier allocationVSAvoidlatency during resource request

Core Design Contradiction:

Ease of operationVSLoss of time

Solution Approach 1:

The source base station pre-allocates temporary resource request identifiers to wireless communication devices before handover is needed. During normal operation, the source base station maintains a pool of available identifiers and proactively assigns them to devices that may soon require handover, eliminating the need for time-critical identifier requests during actual handover events

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The source base station acts as an intermediary that manages identifier allocation between the target base station's identifier pool and the wireless communication devices. This centralized mediation streamlines the process by having the source base station handle all allocation decisions and communications, reducing the number of signaling steps and latency during handover

Inventive Principle:

Principle #24Intermediary (Mediator)

3Productivity

If the same temporary resource request identifier is reused after being allocated, then the finite pool of identifiers can support more requests over time, but conflicts arise if the identifier is allocated to another device before the original device completes its resource request

Engineering Contradiction:

Improveidentifier utilization efficiencyVSAvoidconflict-free allocation

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The system implements periodic review and rotation of temporary resource request identifier allocations. The source base station monitors the usage status of allocated identifiers and systematically rotates the identifier pool over defined time periods or after certain events, ensuring that identifiers are reused in an organized manner that minimizes conflicts while maintaining high utilization efficiency

Inventive Principle:

Principle #19Periodic action

Data Source

PatentUS8498645B2Method for allocating a temporary resource request identifier for accessing a target base station

Publication Date: 2013.07.30 GOOGLE TECHNOLOGY HOLDINGS LLC

AI summary

The present disclosure provides for a method for allocating by a plurality of source base stations of a cellular wireless communication support infrastructure a temporary resource request identifier to a wireless communication device for accessing a target base station. The method includes identifying a list of temporary resource request identifiers associated with the target base station for use by one or more wireless communication devices, wherein the list includes a subset of one or more part time temporary resource request identifiers whose respective assignment to a corresponding grouping of one or more source base stations at a particular time is rotated between more than one of the plurality of corresponding groupings of one or more source base stations.