Hybrid Network Redundancy Data Transmission Mode Selection
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Solution Overview
Problem
Current systems for transmitting redundancy data in hybrid broadcast/broadband networks, such as LTE-Advanced+, face issues with error correction due to insufficient network coverage and lack of flexibility, relying on additional broadband networks which increase latency and are not adaptable to varying demand.
Innovation Solution
A method for selecting and transmitting redundancy data using multiple modes, including unicast and broadcast, within the hybrid network, utilizing Hybrid Automatic Repeat Request (HARQ) and Redundancy on Demand (RoD) modes, with the option to pre-emptively transmit redundancy data via evolved Multimedia Broadcast Multicast Service (eMBMS, allowing for flexible resource allocation and reduced data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If redundancy data is transmitted via additional broadband network, then error correction capability is improved, but latency increases and network complexity increases
Solution Approach 1:
The patent merges the broadcast network and broadband network into a hybrid architecture where the existing broadcast infrastructure is utilized for redundancy data transmission. This eliminates the need for separate additional broadband networks, reducing network complexity while maintaining error correction capabilities through the integrated hybrid system.
Solution Approach 2:
The patent implements pre-emptive transmission of redundancy data before it is actually needed. By proactively sending redundancy information in advance through the broadcast network, the system eliminates waiting time and reduces latency when errors occur, as the correction data is already available immediately.
2Reliability
If redundancy data is transmitted via unicast mode, then error correction reliability is improved, but network resource consumption increases
Solution Approach 1:
The patent implements a multi-functional transmission system that can operate in both unicast and broadcast modes depending on conditions. The hybrid network entity selectively switches between unicast mode for individual error correction and broadcast mode for efficient group transmission, optimizing network resource usage while maintaining reliability through appropriate mode selection.
Solution Approach 2:
The patent introduces dynamic transmission mode selection where the system adapts between unicast and broadcast modes based on real-time conditions such as error patterns, network load, and receiver requirements. This dynamic adjustment optimizes the balance between reliability and resource consumption by using unicast only when necessary and broadcast for efficient bulk transmission.
3Device complexity
If fixed transmission mode is used for redundancy data, then system complexity is reduced, but adaptability to varying demand decreases
Solution Approach 1:
The patent implements dynamic transmission mode selection where the hybrid network entity can switch between unicast and broadcast modes based on real-time conditions such as error patterns, network load, and receiver requirements. This dynamic adjustment optimizes the balance between reliability and resource consumption without requiring complex manual configuration.
Solution Approach 2:
The patent incorporates feedback mechanisms where the system monitors transmission conditions, error rates, and network state, then uses this information to automatically select the appropriate transmission mode. This feedback-driven adaptation allows the system to respond to varying demand conditions while maintaining manageable complexity through automated decision-making.
4Loss of energy
If redundancy data is transmitted after request, then network resource efficiency is improved, but latency increases
Solution Approach 1:
The patent implements pre-emptive transmission of redundancy data before it is actually needed. By proactively sending redundancy information in advance through the broadcast network, the system eliminates waiting time and reduces latency when errors occur, as the correction data is already available immediately rather than waiting for requests.
Data Source
AI summary
The invention relates to a method for transmitting redundancy data in an hybrid broadband/broadcast network system comprising a broadcast network dedicated to transmission of broadcast services and a broadband network dedicated to transmission of at least unicast services, the method being carried out in at least one network entity and comprising the following steps: —selecting (42) a transmission mode for transmitting redundancy data among a plurality of transmission modes supported by the broadband network; —obtaining (43) redundancy data, said redundancy data comprising information for decoding broadcast services broadcasted by the broadcast network; —transmitting (44), via at least one node of the broadband network, the obtained redundancy data according to the selected transmission mode.