Local Loopback Routing for Mobile Cellular Networks
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Solution Overview
Problem
Current cellular network technologies, particularly in GSM and UMTS systems, incur high costs and delays due to the unnecessary use of satellite radio links for local communications between users in close proximity, as they require double satellite transfers, leading to increased transmission time and expenses.
Innovation Solution
Implementing a method that detects the local nature of calls by analyzing signaling flows and injecting tracing information to loop back data directly between users in the same or neighboring cells, bypassing the base station controller and reducing the need for double satellite transfers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional centralized transmission techniques are used in GSM networks, then network coverage and reliability are maintained, but transmission costs and delays increase significantly for local communications
Solution Approach 1:
The patent segments the network transmission path by introducing local routing capability at the BTS level, separating local traffic from centralized traffic. Local calls are routed directly between BTS units without passing through the BSC, while maintaining centralized control for non-local traffic. This segmentation resolves the contradiction by creating a fast local path while preserving the reliable centralized architecture for other scenarios.
Solution Approach 2:
The patent introduces a local routing intermediary function that intercepts and redirects local call traffic before it reaches the centralized BSC. This intermediary mechanism detects local calls and creates direct peer-to-peer connections between source and destination BTS units, eliminating the unnecessary detour through the BSC while maintaining network control and reliability.
2Area of stationary object
If satellite radio links are used for all transmissions, then network coverage in remote areas is achieved, but transmission costs and resource consumption increase
Solution Approach 1:
The patent applies local quality by enabling intelligent routing decisions at the local BTS level based on the specific characteristics of each call. Local calls are routed directly through terrestrial connections when available, while only non-local or remote calls utilize satellite links. This selective approach reduces satellite resource consumption while maintaining comprehensive network coverage for all users.
3Extent of automation
If double satellite transfers are performed for local calls, then centralized network control is maintained, but transmission costs and delays increase
Solution Approach 1:
The patent introduces dynamic routing capability that adapts the transmission path based on the specific call characteristics. The system automatically determines whether a call is local or non-local and dynamically selects the appropriate routing mode: direct local routing for local calls or centralized satellite routing for non-local calls. This dynamic approach maintains centralized control automation while eliminating unnecessary transmission delays for local traffic.
4Device complexity
If centralized routing through BSC is used, then network management and control are simplified, but resource efficiency and cost-effectiveness decrease
Solution Approach 1:
The patent segments the routing function into two parts: centralized call setup and connection management remain at the BSC level, while local routing optimization is delegated to the BTS level. This segmentation allows the BSC to maintain simplified management of overall network control while local BTS units handle the efficiency-critical path selection for local calls, thereby improving resource efficiency without significantly increasing management complexity.
Data Source
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Figure 4B
AI summary
The invention concerns a method for transmitting data in a mobile radio communication cellular network, which consists in setting up, maintaining and terminating a data communication channel between a caller and a called party located in said cellular network, a caller and/or a called party being each located in a local zone (406) of the cellular network, the setting up, maintaining and termination of the data communication channel using exchanges of signalling messages. According to the invention, said method includes: a first phase of detecting whether the caller and the called party of the communication are located in a common local zone (406) of the cellular network, based on a detection strategy including a step of analyzing all or part of the signalling messages; a second phase of triggering a local loopback operation (421) of all or part of the data exchanged between the caller and the called party, if the detecting phase confirms the local nature of the communication between the caller and the called party.