LTE-LAN Framework for QoS-Guaranteed Indoor Data Services
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Solution Overview
Problem
Current cellular mobile network solutions for indoor and hotspot data services are inefficient and costly, with traditional cellular systems struggling to handle low-speed IP data packet services and WLAN technologies failing to provide quality of service (QoS) guarantees due to interference and complex architecture, while femto cellular solutions are not optimized for nomadic mobility and burden the 3GPP core network with high signalling loads.
Innovation Solution
The implementation of an LTE-LAN framework that establishes secured and QoS-guaranteed radio links between User Equipments (UEs) and Access Points (APs) using low-layer communication technologies, segmenting IP data streams into service data streams with different QoS parameters and managing radio bearers to provide end-to-end QoS without involving the core network, thereby optimizing network architecture and protocols.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If WLAN technology is used for indoor data services, then cost is reduced and deployment is simplified, but QoS guarantee capability deteriorates due to interference and lack of telecommunication-level service support
Solution Approach 1:
The patent segments the network architecture into access network and core network parts. The LTE-LAN access network handles local data traffic independently using simplified protocols, while only authentication and billing functions connect to the 3G core network. This segmentation allows WLAN-like deployment simplicity while maintaining cellular-level QoS through the LTE access layer.
Solution Approach 2:
The patent introduces an intermediary gateway that connects the LTE-LAN access network to the 3G core network. This gateway translates between the simplified LTE-LAN protocols and standard cellular protocols, enabling QoS guarantee through the core network while allowing the access network to operate with WLAN-like simplicity.
2Reliability
If home eNB is deployed to provide indoor coverage, then QoS guarantee capability is improved, but device complexity and cost increase due to adoption of entire LTE protocol architecture
Solution Approach 1:
The patent extracts only the essential access network functions needed for QoS guarantee (radio resource management, scheduling, and basic authentication) from the complete LTE architecture. The heavier protocol stack elements (mobility management, session management, billing) are removed and handled by the core network gateway, reducing eNB complexity while preserving QoS capability.
Solution Approach 2:
Instead of having the eNB handle all LTE protocol functions as in traditional deployments, the patent inverts the architecture by having the core network gateway handle most protocol processing and leaving the eNB with simplified radio access functions. This reversal reduces eNB complexity while maintaining QoS through centralized control.
3Area of stationary object
If home eNB network is used, then indoor coverage is improved, but core network load increases due to all UE communication process flows being controlled by 3GPP core network
Solution Approach 1:
The patent segments communication flows into authentication/billing flows (handled by core network) and data service flows (handled locally by LTE-LAN gateway). This segmentation allows indoor coverage expansion without proportionally increasing core network load, as local data traffic is handled independently after initial authentication.
Solution Approach 2:
The LTE-LAN gateway acts as an intermediary between UEs and the 3G core network, handling data packet forwarding and local service management. This intermediary absorbs most data traffic locally, preventing it from reaching the core network and thus reducing signalling load while maintaining expanded indoor coverage.
Data Source
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AI summary
Disclosed in the present invention are a wireless bearing building method, an Access Point (AP) equipment, a User Equipment (UE) and a wireless access system, the UE divides the IP date flow of a service into multiple service date flow having different QoS requirements according to media parameter information, determines QoS parameters of each service date flow and sends the information of the service date flow and the corresponding QoS parameters to the AP, the AP allocates wireless resources for each service date flow according to the local QoS strategy, builds the corresponding wireless bearing and binds the service date flow and the wireless bearing; the UE side also builds the corresponding wireless bearing for each service date flow and binds the service date flow and the wireless bearing, during the uplink and downlink date transmission, the AP and UE in the present invention can map each service date flow to the corresponding wireless bearing respectively for transmission according to the QoS requirements of different service date flow, implements perfect service mechanism of the QoS.