Systems and methods for implementing an OFDMA LTF design for wireless network communication
First Claim
1. A method for aligning high efficiency long training fields (“
- HE-LTF”
) for data corresponding to a plurality of users, the method comprising;
obtaining, at a wireless transmitter, data for transmission to a plurality of users via a plurality of wireless channels;
determining a respective number of spatial streams corresponding to each user of a plurality of users for transmission via a data frame;
determining a size for a template matrix based on a highest number of spatial streams of the respective numbers of spatial streams corresponding to each user of the plurality of users;
accessing, from memory, the template matrix of the determined size;
generating a respective matrix of HE-LTF symbols for each user of the plurality of users based on the template matrix, wherein each respective matrix comprises a number of columns that corresponds to the determined size, and wherein each respective matrix comprises a number of rows equivalent to the respective number of spatial streams;
generating the data frame by aligning the matrices corresponding to the plurality of users in the data frame; and
transmitting, via the wireless transmitter, the data frame via the plurality of wireless channels to the plurality of users.
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Accused Products
Abstract
Systems, methods, and apparatuses are disclosed herein for aligning HE-LTFs corresponding to a plurality of users by determining a respective number of spatial streams corresponding to each user, determining a highest respective number of spatial streams of the spatial streams, and setting an alignment number of HE-LTF symbols to be equal to or larger than the highest respective number of spatial streams. For each respective user, a respective matrix of HE-LTF symbols corresponding to the respective number of spatial streams of the respective user is selected, and it is determined whether the respective matrix of HE-LTF symbols has fewer symbols than the alignment number. In response to determining that the respective matrix of HE-LTF symbols has fewer symbols than the alignment number, padding symbols may be added to the respective matrix to yield a number of HE-LTF symbols in the respective matrix that corresponds to the alignment number.
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Citations
20 Claims
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1. A method for aligning high efficiency long training fields (“
- HE-LTF”
) for data corresponding to a plurality of users, the method comprising;obtaining, at a wireless transmitter, data for transmission to a plurality of users via a plurality of wireless channels; determining a respective number of spatial streams corresponding to each user of a plurality of users for transmission via a data frame; determining a size for a template matrix based on a highest number of spatial streams of the respective numbers of spatial streams corresponding to each user of the plurality of users; accessing, from memory, the template matrix of the determined size; generating a respective matrix of HE-LTF symbols for each user of the plurality of users based on the template matrix, wherein each respective matrix comprises a number of columns that corresponds to the determined size, and wherein each respective matrix comprises a number of rows equivalent to the respective number of spatial streams; generating the data frame by aligning the matrices corresponding to the plurality of users in the data frame; and transmitting, via the wireless transmitter, the data frame via the plurality of wireless channels to the plurality of users. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
- HE-LTF”
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11. A system for aligning high efficiency long training fields (“
- HE-LTF”
) for data corresponding to a plurality of users, the system comprising;a wireless transmitter configured to; obtain, at a wireless transmitter, data for transmission to a plurality of users via wireless channels; control circuitry coupled to the wireless transmitter, configured to; determine a respective number of spatial streams corresponding to each user of a plurality of users for transmission via a data frame; determine a size for a template matrix based on a highest number of spatial streams of the respective numbers of spatial streams corresponding to each user of the plurality of users; access, from memory, the template matrix of the determined size; generate a respective matrix of HE-LTF symbols for each user of the plurality of users based on the template matrix, wherein each respective matrix comprises a number of columns that corresponds to the determined size, and wherein each respective matrix comprises a number of rows equivalent to the respective number of spatial streams; generate the data frame by aligning the matrices corresponding to the plurality of users; and the wireless transmitter further configured to; transmit the data frame via the plurality of wireless channels to the plurality of users. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
- HE-LTF”
Specification