Deterministic QoS Wireless Medium Reservation via TSPEC Negotiation
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Solution Overview
Problem
The non-deterministic Quality of Service (QoS) in wireless communication networks due to random back-off of lower priority data leads to unpredictable data transmission times, affecting communication quality, especially in applications requiring high data transfer rates within short distances.
Innovation Solution
A method and system for transmitting data based on deterministic QoS, which involves exchanging reservation information, negotiating traffic specifications, reserving a wireless medium, and assigning priority queues to ensure predictable data transmission by considering channel availability and buffer status.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If contention based access with EDCA is used, then multiple devices can access the wireless medium, but random back-off causes non-deterministic QoS and unpredictable transmission times
Solution Approach 1:
The patent applies preliminary action by performing medium reservation before data transmission. Devices exchange reservation information and negotiate TSPEC parameters in advance, securing channel access rights beforehand. This eliminates the need for random back-off during actual data transfer, as the transmission time and channel availability are predetermined through prior negotiation and reservation steps.
2Speed
If random back-off is applied to lower priority traffic, then higher priority traffic can be transmitted without delay, but lower priority traffic experiences unpredictable delays
Solution Approach 1:
The patent segments the wireless medium access into distinct reserved channels for different priority levels. Through TSPEC negotiation, specific time slots and channel resources are allocated to different traffic types. This segmentation allows higher priority traffic to have guaranteed fast access while lower priority traffic receives dedicated time slots, eliminating unpredictable delays through structured resource division.
3Device complexity
If channel availability and buffer status are not considered, then simple contention based access is maintained, but QoS cannot be guaranteed due to non-deterministic back-off
Solution Approach 1:
The patent implements feedback mechanisms where devices exchange reservation information including buffer status and channel availability. The TSPEC negotiation process incorporates feedback about current network conditions, allowing dynamic adjustment of transmission parameters. This feedback loop enables QoS guarantees by adapting resource allocation based on real-time channel and buffer states while maintaining structured access procedures.
Data Source
AI summary
A method and system for transmitting data based on deterministic quality of service by at least one peripheral device in a communication network is disclosed. The method includes exchanging reservation information with peripheral devices in the communication network, negotiating traffic specification (TSPEC) with the at least one peripheral device for at least one traffic type, based on the reservation information, establishing a quality of service associated with the at least one traffic type, using the TSPEC, reserving a wireless medium based on the established quality of service associated with the at least one traffic type and transmitting data through the reserved wireless medium, based on the quality of service and reservation information.