Method for quick map recovery in case of error in MoCA
View Patent ↗A method comprises receiving a predetermined length of information, the information including a first MAC Protocol Data Unit (MPDU) being of variable length and including at least one Sub-MPDU; independently decoding the first Sub-MPDU and a plurality of additional portions of the received information, each portion having a length equal to the length of one Sub-MPDU; processing data from the first Sub-MPDU; and determining from the processed data how many of the other decoded portions constitute Sub-MPDUs of the received MPDU.
1. A method for Media Access Plan (MAP) failure recovery, comprising:
a) receiving a first Media Access Plan (MAP) MAC Protocol Data Unit (MPDU) containing a payload and a first MAP interval value, wherein the first MAP interval value indicates an MPDU transmission interval that remains constant between MAP MPDU transmissions until notice of a change is received;
b) decoding the first MAP MPDU and the first MAP interval value; and
c) predicting an arrival time of at least a second MAP MPDU and upon missing the second MAP MPDU, predicting an arrival time of a third MAP MPDU based on the decoding of the first MAP interval value.
2. The method of claim 1 wherein the first MAP MPDU comprises a set of Sub-MPDUs, and wherein decoding the first MAP MPDU and the MAP interval value comprises decoding the first MAP MPDU and the MAP interval value in a header of a first Sub-MPDU of the set of Sub-MPDUs.
3. The method of claim 2 wherein each Sub-MPDU within the set of Sub-MPDUs is of equal length.
4. The method of claim 2 wherein each Sub-MPDU within the set of Sub-MPDUs is of variable length.
5. The method of claim 1 wherein the first MAP MPDU comprises a notice indicating a change in the first MAP interval value to a second MAP interval value and a countdown value identifying a number of remaining MAP MPDUs to be transmitted and spaced at the first MAP interval value.
6. The method of claim 1 wherein the Sub-MPDUs are independently encoded.
7. The method of claim 6 further comprising independently decoding the independently encoded Sub-MPDUs.
8. A network node, comprising:
a) a computer readable storage medium; and
b) a processor in data communication with the computer readable storage medium, the processor configured to:
a. receive a first Media Access Plan (MAP) MAC Protocol Data Unit (MPDU) containing a payload and a first MAP interval value,
wherein the first MAP interval value indicates an MPDU transmission interval that remains constant between MAP MPDU transmissions until notice of a change to the first MAP interval value is received;
b. decode the first MAP MPDU and the first MAP interval value: and
c. predict an arrival time of at least a second MAP MPDU and upon missing the second MAP MPDU, predicting an arrival time of a third MAP MPDU based on the decoding of the first MAP interval value.
9. The network node of claim 8 wherein the first MAP MPDU comprises a set of Sub-MPDUs, and wherein decoding the first MAP MPDU and the first MAP interval value comprises decoding the first MAP MPDU and the first MAP interval value in a header of a first Sub-MPDU of the set of Sub-MPDUs.
10. The network node of claim 9 wherein each of the Sub-MPDUs of the set of Sub-MPDUs is of equal length.
11. The network node of claim 9 wherein each of the Sub-MPDUs of the set of Sub-MPDUs is of variable length.
12. The network node of claim 8 wherein the first MAP MPDU comprises a notice indicating a change in the first MAP interval value to a second MAP interval value and a countdown value identifying a number of remaining MAP MPDUs to be transmitted and spaced at the first MAP interval value.
13. The network node of claim 9 wherein the Sub-MPDUs are independently encoded.
14. The network node of claim 13 further comprising independently decoding the independently encoded Sub-MPDUs.
15. A non-transitory computer readable storage medium encoded with program code, wherein when the program code is executed by a processor, the processor performs a method, the method comprising:
a) receiving a first Media Access Plan (MAP) MAC Protocol Data Unit (MPDU) containing a payload and a first MAP interval value, wherein the first MAP interval value indicates an MPDU transmission interval which remains constant between MAP MPDU transmissions until notice of a change is received;
b) decoding the first MAP MPDU and the first MAP interval value; and
c) predicting an arrival time of at least a second MAP MPDU and upon missing the second MAP MPDU, predicting an arrival time of a third MAP MPDU based on the decoding of the first MAP interval value.
16. The computer readable storage medium of claim 15 wherein receiving the MAP MPDU comprises a set of Sub-MPDUs, and wherein decoding the first MAP MPDU and the first MAP interval value comprises decoding the first MAP MPDU and the first MAP interval value in a header of a first Sub-MPDU of the set of Sub-MPDUs.
17. The computer readable storage medium of claim 16 wherein each of the Sub-MPDUs of the set of Sub-MPDUs is of equal length.
18. The computer readable storage medium of claim 16 wherein each of the Sub-MPDUs of the set of Sub-MPDUs is of variable length.
19. The computer readable storage medium of claim 15 wherein MAP MPDU comprises a notice indicating a change in the first MAP interval value to a second MAP interval value and a countdown value identifying a number of remaining MAP MPDUs to be transmitted and spaced at the first MAP interval value.
20. The computer readable storage medium of claim 15 wherein the Sub-MPDUs are independently encoded.
21. The computer readable storage medium of claim 20 further comprising independently decoding the independently encoded Sub-MPDUs.