Segmented Discovery Information Transmission for Wireless Peer Networks
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Solution Overview
Problem
In wireless networks, especially ad hoc peer-to-peer networks, there is a need for efficient communication of various types of discovery information while managing resource constraints such as power and spectrum, and ensuring flexibility in transmission and reception to support different device capabilities and needs.
Innovation Solution
The method involves dividing transmission of discovery information into separate portions and structuring them for flexible frequency of peer discovery transmissions, using distinct transmission units for low and high rate transmissions, with more units allocated for high rate transmissions to facilitate rapid and secure discovery by trusted peers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If discovery information is transmitted continuously at high rate, then peer discovery speed is improved, but power consumption increases and spectrum resources are depleted
Solution Approach 1:
The patent segments discovery information transmission into multiple portions that can be sent at different rates and times. The transmission structure divides the discovery information into sets of portions, allowing the system to transmit at high rate when needed and at lower rate or pause when power or spectrum resources are constrained, thus resolving the contradiction between discovery speed and power consumption.
Solution Approach 2:
The patent implements dynamic transmission rate adjustment based on available resources and discovery needs. The system can switch between high rate and low rate transmission modes, or pause transmission, depending on the current state of power and spectrum resources. This dynamic adaptation allows the system to optimize the balance between discovery speed and energy consumption.
2Reliability
If discovery information is transmitted frequently, then peer discovery reliability is improved, but available spectrum resources for traffic signaling decrease
Solution Approach 1:
The patent segments the transmission of discovery information into discrete portions that can be distributed over time. This segmentation allows the system to maintain discovery reliability by sending multiple portions at different rates while preserving spectrum resources for traffic signaling by not requiring continuous high-rate transmission.
Solution Approach 2:
The patent employs periodic transmission structures where discovery information is sent in repeated cycles at varying rates. This periodic action ensures that discovery reliability is maintained through multiple transmission opportunities while allowing spectrum resources to be allocated for traffic signaling during non-discovery periods.
3Speed
If transmission units are allocated for high rate discovery, then rapid discovery capability is improved, but device complexity increases
Solution Approach 1:
The patent designs a transmission structure where a set of transmission units can serve multiple functions: they can be used for high rate discovery transmission, for low rate discovery transmission, or for traffic signaling. This multi-functionality reduces device complexity by avoiding dedicated separate channels for each function, while still enabling rapid discovery capability when needed.
Data Source
AI summary
Methods and apparatus related to peer/network/service discovery in a mobile wireless system, e.g., an ad hoc peer-to-peer network are described. Transmission of discovery information, e.g., upper layer discovery information, is divided into a number of portions to be transmitted separately over time. Transmission of the individual portions is structured so as to enable flexibility in the frequency of the peer discovery transmissions as well as the monitoring of such transmissions. Various embodiments facilitate rapid discovery and/or secure discovery, e.g., selective discovery by trusted peers.