Radio Communication Apparatus Adaptive Transmission Reservation

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Solution Overview

Problem

Existing radio communication systems face inefficiencies due to changes in transmission rate, leading to wasted reserved transmission timing and potential competition for reservations when data transmission rates vary.

Innovation Solution

A radio communication method and apparatus that dynamically adjust transmission timing and format based on changing radio communication environments by transmitting multiple reservation acknowledgments at different times, allowing for earlier or later transmission depending on the completion status of data transmission relative to the schedule.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If transmission reservation is conducted based on fixed transmission rate assumptions, then transmission timing can be predetermined, but the system cannot adapt when transmission rate changes occur leading to wasted reserved slots and transmission inefficiency

Engineering Contradiction:

ImproveAdaptability to transmission rate changesVSAvoidComplexity of reservation management

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent applies dynamics by making the reservation acknowledgment system adaptive rather than static. The base station dynamically transmits additional reservation acknowledgments based on real-time transmission completion status. When transmission completes earlier than scheduled due to rate changes, the system dynamically adjusts by sending updated acknowledgments that allow other stations to utilize the freed time slots, thereby adapting to rate changes without fixed predetermined timing

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent implements feedback mechanisms where the base station monitors transmission completion status and provides feedback through reservation acknowledgments. When a transmission completes earlier than expected, the base station sends feedback information indicating the early completion, allowing the receiving station to adjust its timing. This feedback loop enables the system to adapt to transmission rate changes while maintaining efficient slot utilization

Inventive Principle:

Principle #23Feedback

2Productivity

If multiple reservation acknowledgments are transmitted to handle rate changes, then transmission efficiency improves, but signaling overhead and system complexity increase

Engineering Contradiction:

ImproveData transmission efficiencyVSAvoidSignaling overhead

Core Design Contradiction:

ProductivityVSLoss of information

Solution Approach 1:

The patent applies partial action by transmitting additional reservation acknowledgments only when necessary - specifically when transmission completion status deviates from the scheduled timing. Rather than continuously transmitting multiple acknowledgments, the system sends supplementary acknowledgments selectively based on whether early or delayed completion occurs, thereby improving efficiency without excessive signaling overhead

Inventive Principle:

Principle #16Partial or excessive action

Solution Approach 2:

The patent changes the parameter of reservation acknowledgment timing from fixed to variable. The system transmits reservation acknowledgments at flexible timings based on actual transmission completion status. When transmission completes earlier than scheduled, additional acknowledgments are transmitted at adjusted timings, allowing the system to adapt parameter timings dynamically without increasing overall signaling burden

Inventive Principle:

Principle #35Parameter changes

3Ease of operation

If transmission timing is fixed based on initial reservations, then scheduling is simple, but competition for reservations occurs when actual transmission timing shifts due to rate variations

Engineering Contradiction:

ImproveScheduling simplicityVSAvoidReservation conflict avoidance

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The patent uses feedback to maintain scheduling simplicity while avoiding conflicts. The base station monitors whether transmissions complete on schedule, early, or late, and provides feedback through additional reservation acknowledgments when deviations occur. This feedback mechanism prevents reservation conflicts by informing stations of actual availability without requiring complex preemptive scheduling algorithms

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The patent applies preliminary action by establishing initial reservation acknowledgments that provide baseline scheduling information to all stations. These preliminary acknowledgments enable simple initial scheduling, while the system prepares to transmit additional corrective acknowledgments if needed. This two-stage approach maintains scheduling simplicity while preventing conflicts through preparatory timing information

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS8311028B2Radio communication apparatus and radio communication method

Publication Date: 2012.11.13 1FINITY INC

AI summary

To provide a radio communication apparatus and a radio communication method in which change in the transmission rate is taken into consideration at the time of making transmission reservation. The present invention provides a radio communication apparatus for receiving the transmission reservation request with a radio transmitting/receiving unit and transmitting the reservation acknowledgement from the same radio transmitting/receiving unit. This radio communication apparatus is characterized in comprising a control unit for transmitting, from the radio transmitting/receiving unit, a plurality of reservation acknowledgments in different contents for a transmission reservation request in different timings.