Multi-Carrier Preamble Design for Network Entry Latency Reduction
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Solution Overview
Problem
In conventional multi-carrier communication systems, mobile stations face network entry latency due to inability to differentiate between fully and partially configured carriers based on their hierarchical preamble designs, leading to prolonged access times for network entry information.
Innovation Solution
The system introduces distinct preamble designs for fully and partially configured carriers, where fully configured carriers broadcast a primary preamble along with secondary preambles, and partially configured carriers broadcast only secondary preambles, allowing mobile stations to identify and access network entry information efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If hierarchical preamble designs are used for both fully configured carriers and partially configured carriers, then the system maintains uniformity in carrier structure, but mobile stations cannot differentiate between fully configured carriers and partially configured carriers, resulting in prolonged network entry latency
Solution Approach 1:
The patent applies local quality by making the preamble structure carrier-type-specific: fully configured carriers use a hierarchical preamble design with primary and secondary preambles, while partially configured carriers use only secondary preambles. This localized differentiation in preamble quality allows mobile stations to identify carrier types and reduce network entry latency without requiring complete structural changes across the entire system.
Solution Approach 2:
The patent uses preamble sequences as identifiable markers (analogous to color changes) to differentiate between fully configured and partially configured carriers. By assigning distinct preamble characteristics to different carrier types, mobile stations can quickly identify carrier types through preamble detection, similar to how color changes provide immediate visual identification.
2Ease of operation
If mobile stations access partially configured carriers without identifying carrier type first, then the system allows direct access to all carriers, but mobile stations waste time accessing partially configured carriers without obtaining complete network entry information
Solution Approach 1:
The patent implements preliminary action by enabling mobile stations to identify carrier types through preamble detection before attempting full data access. This preliminary identification step allows mobile stations to prioritize fully configured carriers for network entry information acquisition, avoiding wasted access attempts on partially configured carriers and reducing overall network entry latency.
3Reliability
If fully configured carriers broadcast complete system information, then mobile stations can obtain all network entry information, but the system requires more carriers to be fully configured, increasing system complexity
Solution Approach 1:
The patent applies segmentation by dividing carriers into two functional categories: fully configured carriers that broadcast complete system information and network entry details, and partially configured carriers that broadcast only partial information. This segmentation allows the system to optimize information distribution across carrier types, ensuring reliable network entry while managing system configuration complexity through clear role differentiation.
Data Source
AI summary
The invention provides a broadcasting system. In one embodiment, the broadcasting system comprises a transceiver and a processor. The transceiver carries out signal transmission via at least one fully configured carrier and at least one partially configured carrier. The processor controls the transceiver to broadcast a first preamble set via the at least one fully configured carrier, and controls the transceiver to broadcast a secondary preamble set via the at least one partially configured carrier, wherein the first preamble set comprises a primary preamble and at least one secondary preamble, and the second preamble set comprises no primary preamble and at least one secondary preamble.