Peer Discovery Signaling Using Coded Time-Frequency Segments
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Solution Overview
Problem
Conventional peer-to-peer networks face inefficiencies in identifying and communicating with peers due to asynchronous operations, leading to inefficient power usage and challenges in synchronizing peers within a shared wireless spectrum.
Innovation Solution
A method involving direct signaling using time-varying coded identifiers, where a segment of a time-frequency resource is selected for transmission, and the remainder is signaled within that segment, allowing for identification and correction of timing offsets through reserved symbols and overlapping bits, enabling efficient peer discovery across multiple intervals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional peer-to-peer networks operate in an asynchronous manner, then peers can independently perform tasks at different times, but peers encounter difficulty in identifying and communicating with each other and power is inefficiently utilized
Solution Approach 1:
The patent implements synchronous peer discovery intervals where peers periodically transmit coded identifiers at specific time-frequency resources. This periodic synchronization enables reliable peer identification while maintaining the ability to perform other tasks between intervals, resolving the contradiction between independent operation and reliable communication.
2Adaptability or versatility
If peers transmit signals directly without base station intervention, then network autonomy is improved, but timing synchronization and power efficiency deteriorate
Solution Approach 1:
The patent establishes predetermined time-frequency resources and coding schemes that peers configure in advance. This preliminary configuration enables autonomous direct communication while ensuring proper timing synchronization, as peers know exactly when and how to transmit without real-time base station coordination.
3Measurement precision
If the entire identifier is transmitted in each peer discovery interval, then complete peer identification is achieved, but wireless spectrum utilization and power efficiency worsen
Solution Approach 1:
The patent divides the identifier transmission across multiple peer discovery intervals using coded segments. Peers transmit portions of their identifiers in different time-frequency resources across successive intervals, allowing receiving peers to reconstruct complete identifiers over time. This segmentation reduces instantaneous transmission power requirements and improves spectrum utilization while maintaining identification accuracy.
Data Source
AI summary
Systems and methodologies are described that facilitate identifying peers based upon encoded signals during peer discovery in a peer to peer network. For example, direct signaling that partitions a time-frequency resource into a number of segments can be utilized to communicate an identifier within a peer discovery interval; thus, a particular segment selected for transmission can signal a portion of the identifier, while a remainder can be signaled based upon tones communicated within the selected segment. Moreover, a subset of symbols within the resource can be reserved (e.g., unused) to enable identifying and/or correcting timing offset. Further, signaling can be effectuated over a plurality of peer discovery intervals such that partial identifiers communicated during each of the peer discovery intervals can be linked (e.g., based upon overlapping bits and/or bloom filter information).