METHODS AND DEVICES FOR PROCESSING A DATA FRAME

• US 20140355626A1
• Filed: 05/28/2013
• Published: 12/04/2014
• Est. Priority Date: 05/28/2013
• Status: Active Grant

• Current Assignee: Intel Corporation
• Original Assignee: Stefan Fechtel
• Inventors: FECHTEL, Stefan
• Granted Patent: US 10,057,389 B2
• Time in Patent Office: Days
• US Class Current: 370/474
• CPC Class Codes: H04L 27/2605 Symbol extensions, e.g. Zero Tail, Unique Word [UW]
• CPC Class Codes: H04L 69/22 Parsing or analysis of headers

Abstract

A method including processing a data frame, the data frame having a predetermined frame size and including at least one data symbol configured to form a plurality of sub-carriers in the frequency domain, wherein each of the at least one data symbol comprises a user data portion and a guard interval portion, wherein each of the at least one data symbol includes a plurality of sub-symbols, and wherein at least one of the following parameters is variable during the processing: a size of the guard interval portion, a size of the user data portion, a size of the at least one data symbol, a number of data symbols the data frame comprises, a content of the guard interval portion, and a configuration of the sub-symbol boundaries.

Claims

1. A method, comprising:

processing a data frame, the data frame having a predetermined frame size and comprising at least one data symbol configured to form a plurality of sub-carriers in the frequency domain, wherein each of the at least one data symbol comprises a user data portion and a guard interval portion, and wherein at least one of the following parameters is variable during the processing;

a size of the guard interval portion,

a size of the user data portion,

a size of the at least one data symbol,

a number of data symbols the data frame comprises, and

a content of the guard interval portion.

2. The method of claim 1, wherein the at least one data symbol is encoded according to an orthogonal frequency division multiplexing technique.

3. The method of claim 1, further comprising:

clearing the guard interval portion.

4. The method of claim 1, further comprising:

inserting a guard word into the guard interval portion.

5. The method of claim 4, wherein the guard word is predetermined.

6. The method of claim 1, wherein the size of the at least one data symbol is variable with respect to a power of two of a basic data symbol size.

7. The method of claim 1, further comprising:

signaling the at least one variable parameter by using signaling information, wherein the signal information is a data byte or a data word.

8. The method of claim 1, further comprising:

adapting the size of the guard interval portion based on at least one of the following parameters;

a channel delay spread,

a modulation and coding set,

a MIMO layer and antenna configuration, and

a link direction.

9. The method of claim 1, wherein the size of the at least one data symbol and the number of data symbols the data frame comprises are predetermined, and wherein at least one of the size and content of the guard interval portion of the at least one data symbol are selectable on a user specific basis.

10. A device, comprising:

a processor configured to process a data frame, the data frame having a predetermined frame size and comprising at least one symbol configured to form a plurality of sub-carriers in the frequency domain, wherein each of the at least one symbol comprises a user data portion and a guard interval portion, and wherein at least one of the following parameters is variable during the processing;

a size of the guard interval portion,

a size of the user data portion,

a size of the at least one symbol,

a number of symbols the data frame comprises, and

a content of the guard interval portion.

11. A method, comprising:

processing a data frame configured to form a two-dimensional frame pattern in a time-frequency representation within a predetermined frequency and time range, wherein the data frame comprises a plurality of symbols aligned with symbol boundaries in the time direction, wherein each of the symbols comprises a plurality of sub-symbols aligned with sub-symbol boundaries in the frequency direction, wherein each of the sub-symbols comprises a user data portion and a guard interval portion, and wherein at least one of the following parameters is variable during the processing;

a size of the guard interval portion,

a size of the user data portion,

a size of the symbols,

a number of symbols the data frame comprises,

a content of the guard interval portion,

a configuration of the sub-symbol boundaries on a data frame basis, and

a configuration of the symbol boundaries on a data frame basis.

12. The method of claim 11, wherein the sub-symbols are configured to carry information of users forming a multi-user system.

13. The method of claim 11, wherein the sub-symbol boundaries are configured with respect to sub-carriers defining the frequency direction of the two-dimensional frame pattern.

14. The method of claim 13, further comprising:

partitioning the sub-carriers into a first set of sub-carriers at first frequency positions and into a second set of sub-carriers at second frequency positions in the two-dimensional frame pattern.

15. The method of claim 14, wherein the first set of sub-carriers comprises sub-carriers carrying redundancy information, and wherein the second set of sub-carriers comprises sub-carriers carrying user-data information.

16. The method of claim 15, wherein the sub-carriers carrying user-data information are arranged in equal groups bordered by sub-carriers carrying redundancy information.

17. The method of claim 16, wherein a sub-carrier spacing with respect to the groups of sub-carriers carrying user-data information is based on at least one of the following:

the size of the symbols and the size of the guard interval portion according to the relation S_i<

=N/L_i, where S_i denotes the sub-carrier spacing of an i-th sub-symbol, N denotes the size of the symbols and L_i denotes the size of the guard interval portion of the i-th sub-symbol.

18. The method of claim 11, wherein at least one of the following is a power of two:

the size of the symbols, and the size of the guard interval portion.

19. The method of claim 11, further comprising:

generating the data frame by using a frequency transform having a size based on the predetermined frequency range.

20. A device, comprising:

a processor configured to process a data frame configured to form a two-dimensional frame pattern in a time-frequency representation within a predetermined frequency and time range, wherein the data frame comprises a plurality of symbols aligned with symbol boundaries in the time direction, wherein each of the symbols comprises a plurality of sub-symbols aligned with sub-symbol boundaries in the frequency direction, wherein each of the sub-symbols comprises a user data portion and a guard interval portion, and wherein at least one of the following parameters is variable during the processing;

a size of the guard interval portion,

a size of the user data portion,

a size of the symbols,

a number of symbols the data frame comprises,

a content of the guard interval portion,

a configuration of the sub-symbol boundaries on a data frame basis, and

a configuration of the symbol boundaries on a data frame basis.