Dynamic Default Bearer Management for IoT Network Scalability
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Solution Overview
Problem
In LTE networks, the 'always on' default bearer paradigm wastes network resources and diminishes scalability, as it pre-allocates resources even for infrequently transmitting or receiving data in business, M2M, and IoT applications.
Innovation Solution
An end device can attach to a wireless network without creating a default bearer, and a PDN connection can be dynamically created on-demand based on triggers such as data transmission needs, initiated by either the network or the device, and released when no longer required.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an 'always on' default bearer paradigm is used to ensure continuous network connectivity, then connection reliability is improved, but network resource utilization deteriorates due to pre-allocation of resources even when not needed
Solution Approach 1:
The patent implements dynamic bearer management where the default bearer is not permanently established but created on-demand when data transmission is required and released when not needed. This transforms the static 'always on' connection model into a dynamic model that adapts to actual traffic conditions, resolving the contradiction between maintaining connection reliability and optimizing network resource utilization.
Solution Approach 2:
The system employs periodic evaluation of data transmission requirements to determine when to establish or release the default bearer. By continuously monitoring traffic patterns and periodically assessing connection needs, the network can maintain reliability when necessary while releasing resources during idle periods, thus balancing connection reliability with resource efficiency.
2Speed
If an 'always on' default bearer is established to ensure immediate data transmission capability, then data transmission speed is improved, but network scalability deteriorates due to diminished ability to accommodate additional devices
Solution Approach 1:
The dynamic bearer establishment mechanism allows the network to provide immediate data transmission capability when needed while maintaining the ability to scale. By creating bearers on-demand rather than pre-allocating them to all devices, the network preserves resources that can be allocated to new devices, thus maintaining both transmission speed and scalability.
Solution Approach 2:
The system changes the state parameter of the default bearer from 'permanently established' to 'conditionally established'. This parameter change allows the network to optimize between providing immediate transmission capability and maintaining scalability by adjusting bearer establishment based on actual network conditions and device requirements.
3Ease of operation
If a default bearer is pre-allocated during device attachment to ensure connectivity, then ease of operation is improved, but resource waste increases for infrequently transmitting devices
Solution Approach 1:
The system performs preliminary setup by establishing the default bearer only when data transmission is anticipated or required, rather than during every device attachment. This preliminary action approach maintains ease of operation for active devices while avoiding resource waste for infrequently transmitting devices by delaying bearer establishment until actually needed.
Solution Approach 2:
The network system automatically monitors data transmission requirements and autonomously decides when to establish or release default bearers without requiring manual intervention. This self-service mechanism ensures connectivity is maintained with minimal operational overhead while preventing resource waste by releasing bearers when they are not needed.
Data Source
AI summary
A method, a device, and a non-transitory storage medium provide for receiving a request from an end device to access a network; obtaining subscription data pertaining to the end device based on the request; determining whether to establish a default bearer during an attachment procedure based on at least one of the request or the subscription data; permitting attachment to the network without establishment of the default bearer based on determining not to establish the default bearer; and storing context data that indicates the end device is attached without the default bearer based on the permitting. Additionally, the method, the device, and the non-transitory storage medium provide for end device-side and network device-side setting up and tearing down of the default bearer subsequent to attachment.