Localized Distributed Transmission Multiplexing for Wireless Overhead Reduction
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Solution Overview
Problem
Wireless communication systems face challenges in optimizing downlink transmission between base stations and mobile devices, particularly in balancing localized and distributed transmission methods to reduce bit transmission while accommodating varying user capabilities and channel conditions.
Innovation Solution
A system and method that involves receiving information about access terminal capabilities and multiplexing localized and distributed transmissions based on these capabilities, using an optimization component within the base station to determine the optimal multiplexing scheme, which includes partitioning frequency bands into localized subbands and allowing distributed allocation of resources within these subbands to reduce overhead costs and enhance frequency diversity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If localized transmission is used, then frequency selective scheduling is enabled, but frequency diversity is reduced
Solution Approach 1:
The patent combines localized and distributed transmission modes into a unified multiplexed framework. The base station multiplexes localized transmissions (for frequency selective scheduling) and distributed transmissions (for frequency diversity) into a single downlink signal, allowing both modes to coexist and benefit from each other's advantages simultaneously.
Solution Approach 2:
The system dynamically switches between localized and distributed transmission modes based on terminal capabilities and channel conditions. The base station receives capability information from terminals and adaptively multiplexes transmission modes accordingly, making the system flexible and adaptive to varying operational requirements.
2Reliability
If distributed transmission is used, then frequency diversity is utilized, but frequency selective scheduling is limited
Solution Approach 1:
The patent merges distributed transmission (providing frequency diversity) with localized transmission (enabling frequency selective scheduling) into a multiplexed downlink signal. This allows the system to achieve both frequency diversity through distributed components and frequency selective scheduling through localized components simultaneously.
Solution Approach 2:
The system dynamically adapts the proportion of distributed versus localized transmission based on terminal capabilities and channel conditions, allowing optimal utilization of both frequency diversity and frequency selective scheduling advantages when needed.
3Adaptability or versatility
If multiple data streams are transmitted concurrently, then service flexibility is improved, but transmission overhead increases
Solution Approach 1:
The patent merges multiple data streams for different services (broadcast, multicast, unicast) into a single multiplexed downlink transmission. By combining these streams using localized and distributed allocation modes, the system reduces the total overhead compared to separate transmissions while maintaining service flexibility.
Solution Approach 2:
The multiplexed downlink transmission serves multiple functions simultaneously - it can deliver broadcast, multicast, and unicast services through the same physical channel, with the base station dynamically allocating resources based on terminal capabilities and service requirements.
Data Source
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AI summary
Systems and methodologies are described that facilitate multiplexing of localized transmissions and distributed transmissions to reduce overhead transmission costs. According to various aspects, systems and/or methods are described that enable selection of an optimal transmission scheme in order to accommodate various traffic services, user abilities and channel properties.