NB-IoT Channel Allocation via Dynamic Bandwidth Selection
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Solution Overview
Problem
Conventional mechanisms fail to efficiently support Carrier Aggregation and Dual Connectivity between NB-IoT channels/cells, leading to inadequate uplink capacity and channel availability for IoT devices, especially when data transmission requirements exceed existing channel capacity.
Innovation Solution
A method and system that allow NB-IoT devices to tune to available channels by transmitting a channel list from the base station, requesting channel allocation based on operational mode, and decoding an allocation scheme to aggregate or switch to channels with wider bandwidth, enabling efficient data upload.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If conventional mechanisms are used for channel allocation, then device complexity is reduced, but uplink capacity and channel availability are insufficient when transmission requirements exceed existing channel capacity
Solution Approach 1:
The patent implements dynamic channel allocation where the base station transmits a channel list containing multiple available channels with different bandwidths, and devices can dynamically select and switch between channels based on their current transmission requirements. This dynamic approach allows the system to adapt to varying data upload needs without requiring complex predetermined allocation mechanisms.
Solution Approach 2:
The patent changes the parameter of channel bandwidth by providing devices with access to multiple channels of different bandwidths (e.g., 200 KHz and 400 KHz). Devices can select appropriate channel bandwidth parameters based on their transmission requirements, thereby increasing uplink capacity without requiring complex allocation mechanisms.
2Productivity
If NB-IoT devices are limited to existing channel capacity, then device complexity is minimized, but data upload efficiency decreases when transmission requirements exceed channel capacity
Solution Approach 1:
The base station performs preliminary action by transmitting a channel list containing information about multiple available channels before devices need to upload data. This pre-provisioning of channel information allows devices to quickly select appropriate channels when transmission needs arise, improving data upload efficiency without requiring complex real-time channel discovery mechanisms.
Solution Approach 2:
The patent enables devices to autonomously select and tune to appropriate channels from the provided channel list based on their own transmission requirements. This self-service approach allows devices to independently optimize their data upload efficiency without requiring complex centralized allocation mechanisms, thereby improving productivity while limiting the increase in device complexity.
3Adaptability or versatility
If Carrier Aggregation and Dual Connectivity are not supported, then device complexity and network configuration are simplified, but channel availability is insufficient for meeting data transmission demands
Solution Approach 1:
The patent segments the available spectrum into multiple independent channels with different bandwidths and transmits channel list information about these segments to devices. Instead of implementing complex Carrier Aggregation that combines multiple carriers, the system divides the resource pool into discrete selectable channels, allowing devices to access multiple channel segments independently. This approach increases channel availability and adaptability while avoiding the complexity of Carrier Aggregation and Dual Connectivity implementations.
Data Source
AI summary
Embodiments of the present disclosure may relate to mechanism for tuning to an available channel in a narrow band wireless network. In an embodiment, a base station [104] may transmit a channel list (comprising available channel/s) to a NB-IoT device [102] that may transmit a channel request (comprising operational mode of the NB-IoT device [102]) back to the base station [104]. The base station [102] may define a first parameter and a second parameter based on said operational mode and accordingly determine an allocation scheme. Subsequently, the base station [104] may transmit the allocation scheme indicative of the allocation of the available channels to the NB-IoT device [102] such that the NB-IoT device [102] tunes to the available channel/s. In another embodiment, the NB-IoT device [102] may itself tune to the available channel/s and may transmit a notification message to each of the available channel/s based on said tuning.