Network-Guided Traffic Offload via Probabilistic Seed
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Solution Overview
Problem
The increasing usage and congestion in Wireless Wide Area Networks (WWAN), Wireless Local Area Networks (WLAN), and Wireless Personal Area Networks (WPAN) necessitate effective traffic management solutions to alleviate congestion and optimize network performance.
Innovation Solution
The implementation of network-guided traffic offload systems that transmit probabilistic offload guidance information to devices, allowing for the statistical or gradual switching of traffic from one communications node to another, such as from LTE eNodeB to WiFi Access Points, using Radio Resource Control (RRC) signaling, and considering Quality of Service (QoS) classes to manage traffic flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If network-guided traffic offload with probabilistic offload seed is implemented, then congestion on WWAN is reduced, but device complexity increases due to additional signaling and processing requirements
Solution Approach 1:
The device autonomously makes traffic offload decisions by evaluating the probabilistic offload seed and comparing it with the threshold value received from the network, without requiring continuous network control signals for each traffic flow decision
Solution Approach 2:
The network dynamically adjusts the threshold value parameter to control the probability of traffic offload, allowing flexible traffic management between WWAN and WLAN based on network conditions
2Reliability
If traffic is offloaded from WWAN to WLAN, then network reliability is enhanced, but loss of time occurs due to switching between network types
Solution Approach 1:
The device performs measurements and evaluations of WLAN availability and suitability before initiating traffic offload, ensuring that switching occurs only when predetermined conditions are met, thereby minimizing unnecessary switching delays
Solution Approach 2:
The network provides feedback through the threshold value and offload indication to guide device decisions, enabling informed switching that reduces unnecessary transitions and associated time losses
3Productivity
If probabilistic offload seed is transmitted to devices, then resource utilization is optimized, but use of energy increases due to additional signaling overhead
Solution Approach 1:
The device autonomously processes the probabilistic offload seed and makes offload decisions locally without requiring continuous network signaling, reducing signaling overhead and associated energy consumption
Solution Approach 2:
The device applies probabilistic offload selectively based on the seed value and threshold comparison, offloading only when conditions warrant rather than continuously, thereby optimizing resource utilization while limiting additional energy expenditure
Data Source
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AI summary
Discussed generally herein are enhanced Node Bs (eNodeBs) and User Equipment (UE) arranged for offloading UE traffic from a communications node and techniques for the same. An eNodeB can include processing circuitry arranged to obtain traffic load information of one or more WiFi access points within a coverage area of the eNodeB and produce corresponding offload guidance information, the traffic load information includes information about user equipment (UE) traffic flows on the one or more WiFi access points. The eNodeB can include a transceiver arranged to transmit the offload guidance information to one or more UEs and arranged to receive a request from at least one of the UEs to move at least some of the UE traffic flows to one of the WiFi access points.