Multiple Preamble Correlators for Synchronized Peer Links
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Solution Overview
Problem
Current wireless communication systems, such as Bluetooth and IEEE 802.15 WPANs, are limited in supporting peer-to-peer communications among multiple devices reliably, especially for high-bandwidth applications like multimedia data transfer, due to interference issues and infrastructure requirements.
Innovation Solution
The development of a multicast communication protocol and system that enables synchronized communications using a container structure, allowing multiple devices to communicate directly and efficiently, reducing interference by timing and frequency synchronization, and supporting both wideband and narrowband data transfers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If wireless communication systems use common channels for direct peer-to-peer communications, then device connectivity and communication flexibility are improved, but interference between multiple devices increases
Solution Approach 1:
The system segments the communication resource by introducing time synchronization and dividing communications into distinct containers with different types (data containers, acknowledgment containers, etc.). Each container operates in a dedicated time slot, allowing multiple devices to share common channels without interference by separating their transmissions in the time domain.
Solution Approach 2:
The system implements periodic time-synchronized communications where devices transmit and receive data in regular intervals organized into containers. This periodic structure with defined transmission and reception windows allows multiple peer-to-peer connections to coexist on common channels by coordinating their actions periodically, thus reducing random interference.
2Productivity
If multiple devices communicate simultaneously on common channels, then communication efficiency and bandwidth utilization are improved, but reliable data transfer becomes difficult due to interference
Solution Approach 1:
The system incorporates feedback mechanisms through acknowledgment containers where receiving devices send confirmation signals back to transmitting devices. This feedback loop allows devices to verify successful data reception and request retransmission if needed, ensuring reliable data transfer even when multiple devices communicate simultaneously on common channels.
Solution Approach 2:
The system performs preliminary actions by establishing time-synchronized containers before actual data transfer. Devices prepare transmission and reception windows in advance, allocating specific time slots for different communication activities. This preliminary organization ensures that even simultaneous communications follow a coordinated pattern that maintains reliability.
3Reliability
If infrastructure-based communication systems are used, then communication reliability is improved, but device complexity and infrastructure requirements increase
Solution Approach 1:
The system enables devices to self-organize into time-synchronized peer-to-peer networks without requiring external infrastructure. Each device autonomously participates in the synchronized container structure, managing its own transmission and reception windows. This self-service approach achieves infrastructure-less reliable communication by distributing the coordination function across all participating devices.
Data Source
AI summary
A digital broadcast communication system includes a transceiver configured to receive a preamble having one of at least four preamble patterns characterized by a bit pattern and a length, produce the received preamble to each of at least four preamble correlator circuits, and at each correlator circuit, compare the received preamble to a reference code pattern. If a specified level of correlation exists between the received preamble and the reference code, produce an indication that the comparison was favorable. In one embodiment, the transceiver includes 16 correlator circuits and further includes 128 preamble reference codes for detecting preambles that have control, synchronization or data content.