Peer-to-Peer Wide Area Network Media Routing
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Solution Overview
Problem
Conventional wide area networks face issues with media delay, scalability, and bandwidth inefficiency due to centralized infrastructure, which can lead to single points of failure and unnecessary bandwidth consumption during group communications.
Innovation Solution
A peer-to-peer wide area network architecture where subscribers are affiliated with talkgroups and registered to peers, with Subscriber Stewards and Talkgroup Stewards maintaining topology databases to efficiently route media only to active peers, eliminating the need for centralized control and optimizing bandwidth usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a centralized controller is used to maintain and distribute mobility information, then the system is easier to manage and control, but the media delay increases and the system becomes susceptible to single point of failure
Solution Approach 1:
The centralized controller is segmented into distributed peer entities (mobile radios and console units) that independently maintain and distribute mobility information. Each peer acts as a potential controller, eliminating the single point of failure and reducing media delay by enabling direct peer-to-peer communication without centralized coordination overhead.
Solution Approach 2:
Instead of having a centralized controller manage all mobility information distribution, the system inverts the control model by enabling each peer to independently maintain and distribute its own mobility information to relevant stations, thus eliminating the bottleneck and delay associated with centralized control.
2Reliability
If a centralized controller distributes mobility information to all stations, then the information is reliably delivered, but the bandwidth consumption increases as media is sent to all stations including those not serving group members
Solution Approach 1:
Each peer entity tailors the mobility information distribution to its local context, sending information only to stations that are actually serving group members. This localized approach maintains reliability for relevant stations while eliminating unnecessary bandwidth consumption at stations not involved in the communication group.
Solution Approach 2:
Instead of fully distributing mobility information to all stations in the network, the system applies partial action by selectively distributing information only to the subset of stations that need it (those serving group members), thus reducing overall bandwidth consumption while maintaining necessary reliability.
3Adaptability or versatility
If media is sent to all stations in the wide area network, then all potential receivers can receive the communication, but the bandwidth efficiency decreases and unnecessary bandwidth is consumed
Solution Approach 1:
The system performs preliminary action by pre-establishing group membership information and mobility data at peer entities before communication occurs. This allows peers to directly identify and communicate with relevant stations serving group members, eliminating the need to broadcast to all stations and improving bandwidth efficiency while maintaining comprehensive coverage for actual group members.
Data Source
AI summary
A method of operating a peer to facilitate fast group communication between subscribers in a peer-to-peer wide area network is disclosed. In the peer-to-peer wide area network, each of the subscribers are affiliated to a talkgroup, and further registered to at least one peer within the peer-to-peer wide area network. In operation, the peer exchanges messages with other peers to determine that one or more peers listed in a talkgroup topology is still active. When the peer receives a media for a talkgroup from a subscriber affiliated to the talkgroup, the peer duplicates the media for the talkgroup, and unicasts the duplicate media to the one or more peers that are listed as active in the talkgroup topology to enable the one or more peers to deliver the media to the respectively registered subscribers affiliated to the talkgroup.