Frame format for low latency channel bonding

Patent metadata

Field	Value
Publication number	US-2016149631-A1
Application number	US-201514946979-A
Country	US
Kind code	A1
Filing date	Nov 20, 2015
Priority date	Nov 25, 2014
Publication date	May 26, 2016
Grant date	—

Abstract

Certain aspects of the present disclosure provide methods and apparatus for reducing latency in systems including legacy devices by transmitting legacy-decodable preamble information in each of multiple channels and for transmitting preamble information for channel estimation of a multi-channel transmission in gaps between the multiple channels.

First claim

What is claimed is:

1 . An apparatus for wireless communications, comprising:
a processing system configured to generate a frame for transmission on a plurality of channels, the frame having:
first information comprising at least one of preamble, channel estimation, or header information decodable and for processing by first and second types of devices, and wherein the first information is repeated in each of the plurality of channels during transmission of the frame,
second information comprising at least one of preamble, channel estimation, or header information decodable and for processing by the second type of device, and wherein the second information occupies gaps between the plurality of channels during transmission of the frame, and
a portion spanning the plurality of channels and the gaps; and
an interface for outputting the frame for transmission.

2 . The apparatus of claim 1 , wherein the plurality of channels comprises at least two contiguous channels.

3 . The apparatus of claim 1 , wherein the plurality of channels comprise channels designated for communicating with the first type of device.

4 . The apparatus of claim 1 , wherein the second information occupies a gap that is approximately ¼ of a width of each of the channels.

5 . The apparatus of claim 1 , wherein the second information comprises at least one of a short training field (STF) or a field with information for channel estimation (CE).

6 . The apparatus of claim 1 , wherein the frame further comprises third information, decodable by the first and second types of devices, occupying the same channels as the first information.

7 . The apparatus of claim 1 , wherein the portion comprises at least one of a short training field (STF) spanning the plurality of channels and the gaps or a field with information for channel estimation (CE) spanning the plurality of channels and the gaps.

8 . An apparatus for wireless communications, comprising:
an interface for obtaining a frame having:
a first portion decodable and for processing by first and second types of wireless devices, the first portion occupying each of a plurality of channels,
first information comprising at least one of preamble, channel estimation, or header information decodable and for processing by the second type of device, the first information occupying gaps between the plurality of channels, and
a second portion spanning the plurality of channels and the gaps; and
a processing system configured to generate a channel estimate based, at least in part, on the first information and one or more fields in the first portion, and to decode at least some of the second portion based on the channel estimate.

9 . The apparatus of claim 8 , wherein the one or more fields of the first portion comprise at least one of a short training field (STF) or a header field.

10 . The apparatus of claim 8 , wherein the plurality of channels comprises at least two contiguous channels.

11 . The apparatus of claim 8 , wherein the plurality of channels comprise channels designated for communicating with the first type of device.

12 . The apparatus of claim 8 , wherein the first information occupies a gap that is approximately ¼ of a width of each of the channels.

13 . The apparatus of claim 8 , wherein the first information comprises at least one of a short training field (STF) or a field with information for channel estimation (CE) and header.

14 . The apparatus of claim 8 , wherein:
the frame further comprises second information, decodable by the first and second types of devices, occupying the same channels as the first portion; and the processing system is configured to decode data included in the second portion, based on the second information.

15 . The apparatus of claim 8 , wherein:
the second portion comprises at least one of a short training field (STF) spanning the plurality of channels and the gaps or a field with information for channel estimation (CE) spanning the plurality of channels and the gaps; and the processing system is configured to decode data included in the second portion, based on the at least one of the STF or the field with information for CE.

16 . A method for wireless communications by an apparatus, comprising:
generating a frame for transmission on a plurality of channels, the frame having:
first information comprising at least one of preamble, channel estimation, or header information decodable and for processing by first and second types of devices, and wherein the first information is repeated in each of the plurality of channels during transmission of the frame,
second information comprising at least one of preamble, channel estimation, or header information decodable and for processing by the second type of device, and wherein the second information occupies gaps between the plurality of channels during transmission of the frame, and
a portion spanning the plurality of channels and the gaps; and
outputting the frame for transmission.

17 . The method of claim 16 , wherein the plurality of channels comprises at least two contiguous channels.

18 . The method of claim 16 , wherein the plurality of channels comprise channels designated for communicating with the first type of device.

19 . The method of claim 16 , wherein the second information occupies a gap that is approximately ¼ of a width of each of the channels.

20 . The method of claim 16 , wherein the second information comprises at least one of a short training field (STF) or a field with information for channel estimation (CE).

21 . The method of claim 16 , wherein the frame further comprises third information, decodable by the first and second types of devices, occupying the same channels as the first information.

22 . The method of claim 16 , wherein the portion comprises at least one of a short training field (STF) spanning the plurality of channels and the gaps or a field with information for channel estimation (CE) spanning the plurality of channels and the gaps.

23 . A method for wireless communications by an apparatus, comprising:
obtaining a frame having:
a first portion decodable and for processing by first and second types of wireless devices, the first portion occupying each of a plurality of channels,
first information comprising at least one of preamble, channel estimation, or header information decodable and for processing by the second type of device, the first information occupying gaps between the plurality of channels, and
a second portion spanning the plurality of channels and the gaps;
generating a channel estimate based, at least in part, on the first information and one or more fields in the first portion; and decoding at least some of the second portion based on the channel estimate.

24 . The method of claim 23 , wherein the one or more fields of the first portion comprise at least one of a short training field (STF) or a header field.

25 . The method of claim 23 , wherein the plurality of channels comprises at least two contiguous channels.

26 . The method of claim 23 , wherein the plurality of channels comprise channels designated for communicating with the first type of device.

27 . The method of claim 23 , wherein the second information occupies a gap that is approximately ¼ of a width of each of the channels.

28 . The method of claim 23 , wherein t

Assignees

• Qualcomm Inc

Inventors

• Sanderovich Amichai

Classifications

• H04L5/001 Primary

  the frequencies being arranged in component carriers · CPC title

• H04L27/2613

  Structure of the reference signals · CPC title

• H04L5/0064

  Rate requirement of the data, e.g. scalable bandwidth, data priority · CPC title

• H04L5/0053

  Allocation of signalling, i.e. of overhead other than pilot signals · CPC title

• H04L1/08

  by repeating transmission, e.g. Verdan system {(H04L1/1858 and H04L1/189 take precedence)} · CPC title