Modulation and Coding Scheme Adaptation for Wireless Data Block Transmission
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Solution Overview
Problem
In wireless communication systems, access terminals often experience conflicts between periodic activities and uplink transmissions, leading to cancellation of transmission opportunities, which can result in delayed operations and degraded performance due to the loss of entire data blocks.
Innovation Solution
The access terminal employs a modulation and coding scheme that allows for transmission of a data block during non-conflicted timeslots of a radio block, using a processing circuit and communications interface to detect conflicts and adjust the modulation and coding scheme accordingly, ensuring that a portion of the data block can be transmitted even when some timeslots are cancelled.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If access terminals conduct periodic activities, then device functionality is maintained, but transmission opportunities are cancelled causing degraded performance
Solution Approach 1:
The patent segments the data block transmission into multiple parts that can be transmitted in different timeslots. When periodic activities cause cancellation of some timeslots, the system can still transmit remaining segments of the data block in available timeslots, rather than cancelling the entire transmission. This segmentation allows the system to maintain productivity despite periodic activity conflicts.
2Reliability
If transmission opportunities are cancelled pending periodic activity completion, then periodic activities are completed, but access terminal operations are delayed
Solution Approach 1:
The system performs preliminary actions by preparing the data block for transmission in advance and detecting conflicts before actual transmission occurs. When conflicts are detected, the system pre-adjusts the modulation and coding scheme to match the reduced transmission capacity, so that when transmission resumes, data can be sent immediately without additional delays. This preliminary preparation reduces overall operation delay while ensuring periodic activities are completed.
3Device complexity
If entire data blocks are transmitted or cancelled, then transmission simplicity is maintained, but throughput is degraded due to complete data block loss
Solution Approach 1:
The patent introduces dynamic adaptation of the modulation and coding scheme based on the number of available timeslots. Rather than using a fixed transmission protocol, the system dynamically adjusts parameters such as modulation order and coding rate according to the actual transmission capacity. This dynamic approach allows the system to maintain high throughput by utilizing even partial timeslots, while the complexity is managed through standardized adaptation rules that don't significantly complicate the overall protocol.
Data Source
AI summary
Access terminals are adapted to employing a modulation and coding scheme for a data block in various circumstances. For instance, an access terminal may determine that there is a conflict with at least some transmission timeslots of a radio block on which a data block is to be transmitted. In response to the determined conflict, the access terminal can employ a modulation and coding scheme for the data block. In some instances, the modulation and coding scheme may be changed from a previously selected scheme in response to the conflict. In other instances, the modulation and coding scheme may be initially selected in response to the conflict. With the modulation and coding scheme employed, some of the RF bursts of the data block can be transmitted during transmission timeslots of the radio block that are not conflicted. Other aspects, embodiments, and features are also claimed and described.