High performance digital communications resiliency in a roamable virtual private network

A system for transmitting first and second data streams over a network, comprising:

• a packetizer that packetizes a first data stream for transmission using a substantially guaranteed reliable communication protocol providing retransmission upon no acknowledgement, and packetizes a second, real time data stream for transmission using an unreliable communication protocol that does not provide retransmission upon no acknowledgement;
• an encoder that selectively protects said second data stream packets but not said first data stream packets with a forward error correction having a number of data packets per block K that is dynamically adjusted based on network conditions and having a total number N of packets per block;
• a frame generator configured to insert first data stream packets and second data stream packets into a common frame structure for transmission;
• and
• a transmitter that transmits said common frame structure,
• wherein said transmitter transmits blocks with a number of parity packets N−K>K.

A system for transmitting first and second data streams over a network, comprising:

• an encoder that selectively encodes first and second real time data streams with forward error correction, the encoder being configured to (a) packetize the first data stream for transmission using a substantially guaranteed reliable communication protocol providing retransmission upon no acknowledgement, (b) packetize the second, real time data stream for transmission using an unreliable communication protocol that does not provide retransmission upon no acknowledgement, (c) insert first data stream packets and second data stream packets into a common transmission frame structure, and (d) selectively protect said second data stream packets but not said first data stream packets with a forward error correction having a block size that is dynamically adjusted based on network conditions;
• and
• a transmitter that transmits said encoded stream using an unreliable communication protocol that does not provide retransmission upon no acknowledgement,
• wherein said encoder dynamically monitors packet size variance to selectively and dynamically adjust the degree of forward error correction overhead to thereby take at least one network condition including network congestion into account, thereby reducing potential adverse impact of said forward error correction on bandwidth constraints and timeliness.

A method of communicating first and second data streams over a network between a first node and a second node, comprising:

• (a) packetizing a first data stream for transmission using a substantially guaranteed reliable communication protocol providing retransmission upon no acknowledgement;
• (b) packetizing a second, real time data stream for transmission using an unreliable communication protocol that does not provide retransmission upon no acknowledgement;
• (c) inserting first data stream packets and second data stream packets into a common transmission frame structure;
• and
• (d) selectively protecting said second data stream packets but not said first data stream packets with a forward error correction having a block size that is dynamically adjusted based on network conditions,
• wherein said selectively protecting includes using at least one processor to dynamically monitoring packet size variance to selectively and dynamically adjust the degree of forward error correction overhead to thereby take network congestion and other factors into account, thereby maximizing the benefit of forward error correction while minimizing potential adverse impact on network overhead and timeliness.

A method of communicating first and second data streams over a network between a first node and a second node, comprising:

• (a) packetizing a first data stream for transmission using a substantially guaranteed reliable communication protocol providing retransmission upon no acknowledgement;
• (b) packetizing a second, real time data stream for transmission using an unreliable communication protocol that does not provide retransmission upon no acknowledgement;
• (c) inserting first data stream packets and second data stream packets into a common transmission frame structure;
• and
• (d) selectively protecting said second data stream packets but not said first data stream packets with a forward error correction having a block size that is dynamically adjusted based on network conditions,
• wherein said selectively protecting includes using at least one processor to automatically determine when to reduce or turn off forward error correction based on packet size variance.