Flexible Channel Reservation Protocol for Wireless Networks
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Solution Overview
Problem
Existing channel reservation protocols in wireless communication networks are limited to either centralized or distributed modes and cannot seamlessly alternate between them, making them inefficient for flexible MAC architectures that require both modes.
Innovation Solution
A channel reservation protocol for wireless networks employing a flexible MAC protocol, which determines the type and mode of channel reservation, generates a reservation request frame, sends it to a reservation proxy device, and announces usage of allocated time slots upon confirmation, allowing devices to reserve channel access time slots in both centralized and distributed modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a distributed MAC protocol is used, then peer-to-peer applications are efficiently supported, but all devices must send beacons for device discovery and channel reservation which increases overhead
Solution Approach 1:
The patent introduces a coordinator device as an intermediary that centralizes beacon transmission and channel reservation management. Instead of all devices sending beacons, the coordinator device sends beacons on behalf of the network, reducing overhead while maintaining distributed operation benefits for peer-to-peer applications.
2Ease of operation
If a centralized MAC protocol is used, then channel access is controlled and managed, but the system cannot seamlessly switch between centralized and distributed modes
Solution Approach 1:
The patent implements a dynamic MAC protocol that can switch between centralized and distributed modes based on network conditions. The system transitions from static centralized control to dynamic mode selection, allowing the coordinator device to operate in centralized mode when needed and enable distributed operation when appropriate, thus achieving both ease of operation and adaptability.
3Reliability
If existing channel reservation protocols are used, then QoS is guaranteed in centralized or distributed mode, but seamless transition between modes is not possible
Solution Approach 1:
The patent creates a universal channel reservation protocol that functions in both centralized and distributed modes. The same protocol mechanisms work regardless of the operational mode, allowing seamless transitions while maintaining QoS guarantees. The protocol is designed to be mode-agnostic, providing multi-functionality that resolves the contradiction between reliability and adaptability.
Data Source
AI summary
Channel access time slots are reserved in a wireless network employing a flexible medium access control (MAC) protocol. At least a type and a mode of the channel reservation are determined (S310). A reservation request frame is generated (S320) based on the determined type and mode of the channel reservation. The reservation request frame is sent to a reservation proxy device (S330). In response to the reservation request frame, a reservation response frame is received from the reservation proxy device (220-RP). Usage of an allocated time slot is announced if a channel reservation request is confirmed in the reservation response frame (S382).