Method and apparatus of precedence identification for real time services
View Patent ↗Disclosed is a system and method for transmitting a data packet from a source to a destination via a network path having a number of hops. The sum of a playback delay associated with the data packet and the number of hops are stored in a header of the data packet. The data packet is transmitted from the source to the destination via the network path.
1. A method for transmitting a data packet from a source to a destination via a network path including a number of hops, the method comprising:
storing, in a header of said data packet, a sum of a number of packets in a playout buffer in the destination and said number of hops; and
transmitting said data packet from said source to said destination via said network path.
2. The method of claim 1 further comprising calculating said sum at least one of said source and said destination.
3. The method of claim 1 further comprising determining said number of packets in a playout buffer in the destination.
4. The method of claim 1 further comprising processing said data packet before said sum of said number of packets in a playout buffer in the destination and said number of hops expires.
5. The method of claim 1 further comprising determining said number of hops.
6. The method of claim 1 further comprising determining priority of said data packet from said number of packets in a playout buffer in the destination and said number of hops.
7. The method of claim 1 wherein said storing further comprises storing said sum in at least one of a Time-to-Live (TTL) field and a hop count field of said header of said data packet.
8. The method of claim 1 further comprising using said sum to determine an order of scheduling.
9. A system for transmitting a data packet from a source to a destination via a network path including a number of hops, the system comprising:
a source configured to store, in a header of said data packet, a sum of a number of packets in a playout buffer in the destination and said number of hops and configured to transmit said data packet to said destination via said network path.
10. The system of claim 9 further comprising a processor configured to determine said number of packets in a playout buffer in the destination.
11. The system of claim 9 wherein said destination processes said data packet before said sum of said number of packets in a playout buffer in the destination and said number of hops expires.
12. The system of claim 9 wherein said destination determines priority of said data packet from said number of packets in a playout buffer in the destination and said number of hops.
13. A system for transmitting a data packet from a source to a destination via a network path including a number of hops, the system comprising:
means for storing, in a header of said data packet, a sum of a number of packets in a playout buffer in the destination and said number of hops; and
means for transmitting said data packet from said source to said destination via said network path.
14. The system of claim 13 further comprising means for calculating said sum.
15. The system of claim 13 further comprising means for determining said number of packets in a playout buffer in the destination.
16. The system of claim 13 further comprising means for processing said data packet before said sum of said number of packets in a playout buffer in the destination and said number of hops expires.
17. The system of claim 13 further comprising means for determining said number of hops.
18. The system of claim 13 further comprising means for determining priority of said data packet from said number of packets in a playout buffer in the destination and said number of hops.
19. The system of claim 13 wherein said means for storing further comprises means for storing said sum in a Time-to-Live (TTL) field of said header of said data packet.
20. The system of claim 13 further comprising means for using said sum to determine an order of scheduling.