Frame Structure For Multi-Input Multi-Output
Described herein are implementations related to data communication using a frame that includes at least two data packets. One of the data packets includes a preamble that is separated from a payload by a gap, void or empty space. Another of the data packets includes a preamble that is aligned with the gap, void or empty space. A receiver of the frame may perform channel measurements during the gap, void or empty space.
1 . A method for constructing a frame including data for transmission over a telecommunications network, the method comprising the steps of:
constructing a Multi-Input Multi-Output (MIMO) frame including:
a packet having a first part and a second part, the first part separated from the second part by a gap;
another packet including a third part, the third part aligned with at least a portion of the gap; and
transmitting the frame over the telecommunications network.
2 . The method according to claim 1 , wherein the step of transmitting transmits the MIMO frame according to a protocol, selected from the group consisting of G.hn, G.hnem, IEEE 1901, and HomePlug AV.
3 . The method according to claim 1 , wherein the step of transmitting transmits the MIMO frame at least in part by utilizing Orthogonal Frequency-Division Multiplexing (OFDM).
4 . The method according to claim 1 , wherein the step of constructing constructs the first part of the packet to include at least a preamble and the third part of the another packet to include at least a preamble and header.
5 . The method according to claim 1 , wherein the step of constructing constructs the gap to be a void.
6 . The method according to claim 1 , wherein the step of constructing constructs the gap to include at least one quiet symbol.
7 . The method according to claim 1 , wherein the step of constructing constructs the first part of the packet to include at least a preamble and a header and the third part of the another packet being void of a preamble.
8 . The method according to claim 1 , wherein the step of constructing constructs the first part of the packet to include at least a preamble and the third part of the another packet to include at least a preamble.
9 . The method according to claim 1 , further comprising the step of performing a channel measurement during at least a period defined by the gap.
10 . The method according to claim 1 , wherein the performing performs an interference channel measurement on a first channel of the communication medium during a period delimited by the gap and further performs information channel measurement on a second channel of the communication medium during the period delimited by an inter-frame gap.
11 . The method according to claim 10 , wherein the inter-frame gap includes at least one of group comprising: an empty space, a channel estimation symbol, and a quiet symbol.
12 . A computer-readable media storing processor-executable instructions that when executed, cause one or more processors to perform operations in a method according to claim 1 .
13 . An apparatus comprising:
a frame construction unit configured to construct a Multi-Input Multi-Output (MIMO) frame including:
a packet including a first and second part, the first part separated from the second part by a gap; and
another packet including a third part the third part aligned with at least a portion of the gap.
14 . The apparatus according to claim 13 , wherein the frame construction unit is configured to transmit the MIMO frame at least in part by utilizing Orthogonal Frequency-Division Multiplexing (OFDM).
15 . The apparatus according to claim 13 , wherein the frame construction unit is configured to construct the first part of the packet to include at least a preamble and the third part of the another packet to include at least a preamble and header.
16 . The apparatus according to claim 13 , wherein the frame construction unit is configured to construct the gap as a void.
17 . The apparatus according to claim 13 , wherein the frame construction unit is configured to construct the gap to include at least one quiet symbol.
18 . The apparatus according to claim 13 , wherein the frame construction unit is configured to construct the first part of the packet to include at least a preamble and a header and the third part of the another packet being void of a preamble.
19 . The apparatus according to claim 13 , wherein the frame construction unit is configured to construct the first part of the packet to include at least a preamble and the third part of the another packet to include at least a preamble.
20 . The apparatus according to claim 13 , wherein the frame construction unit has associated therewith a unit that performs a channel measurement during at least a period defined by the gap.
21 . The apparatus according to claim 13 , wherein frame construction unit has associated therewith a unit that transmits the MIMO frame according to a protocol, selected from the group consisting of G.hn, G.hnem, IEEE 1901, and HomePlug AV.
22 . The apparatus according to claim 13 , wherein frame construction unit is configured to arrange a header section subsequent to the preamble section and precedes the gap and the section aligned with the gap includes at least a preamble and a header.
23 . The apparatus according to claim 13 , wherein the frame construction unit has a unit associated therewith that performs an interference channel measurement on a first channel of the communication medium during a period delimited by the gap and further performs information channel measurement on a second channel of the communication medium during the period delimited by the inter-frame gap.
24 . The apparatus according to claim 22 , wherein the inter-frame gap includes at least one of group comprising: an empty space, a channel estimation symbol, and a quiet symbol.