US 8,948,198 B2Granted

Advanced wireless packet transmission scheme with enhancements to accommodate basic wireless packet transmission scheme

AssigneeQUALCOMM Incorporated

InventorsD. J. Richard van Nee, Vincent K. Jones

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Abstract

Methods and systems for signaling on a mixed-mode wireless network comprising a plurality of channels are provided. The mixed-mode wireless network includes high-throughput (HT) wireless devices and legacy wireless devices that use channels of the same width. The HT devices transmit data on at least two channels, while the legacy devices transmit on one channel. The distances between the HT channels and the distances between the legacy channels might differ, however, the channels used by the HT devices and the legacy devices may overlap. As a result, cooperation between the HT devices and legacy devices is provided to enable the devices to coexist on the same wireless network by minimizing collisions and interference. The HT devices are configured to send control information to the legacy devices to coordinate transmission by the HT devices with the legacy devices.

A method for signaling on a mixed-mode wireless network comprising:

a plurality of channels, the mixed-mode wireless network usable by high-throughput wireless devices and legacy wireless devices, wherein the high-throughput wireless devices and the legacy wireless devices use channels of the same width, wherein the high-throughput wireless devices use high-throughput channels separated by high-throughput channel distances, the legacy wireless devices use legacy channels separated by legacy channel distances, and the high-throughput wireless devices concurrently transmit on at least two high-throughput channels, the method comprising:
determining whether legacy devices are present on the mixed-mode wireless network;
in response to the determining that the legacy devices are present, transmitting a legacy-part of a mixed-mode preamble on the at least two high-throughput channels associated with a high-throughput device, wherein the legacy-part of the mixed-mode preamble comprises two duplicate legacy preambles, wherein a frequency of at least one of the at least two high-throughput channels is offset by a high-throughput channel separator that enforces a non-contiguity between the at least two high-throughput channels commensurate with the offset and wherein the frequency of the at least one of the at least two high-throughput channels, as offset by the high-throughput channel separator, begins and ends with a frequency of a single legacy channel;
and
after transmitting a legacy-part of a mixed-mode preamble, transmitting a high-throughput-part of the mixed mode preamble on the at least one of the at least two high-throughput channels associated with the high-throughput device;
and
in response to determining that the legacy devices are not present on the mixed-mode wireless network,
performing the transmitting a high-throughput-part of the mixed mode preamble without performing the transmitting the legacy-part of the mixed-mode preamble;
and
after transmitting the high-throughput part of the mixed mode preamble, transmitting high-throughput data on the at least two high-throughput channels associated with the high-throughput device.

7 more elements

Facts

Application

11/681,531Filed 2 Mar 2007 · us provisional application

Priority

2 Mar 2006

Published

US 2007/0207823 A16 Sep 2007

Granted

3 Feb 2015

Term ends

Not estimatedThe source records don’t support an estimate.

Classification8 codes

H04W 16/12
Resource partitioning among network components, e.g. reuse partitioning: fixed resource partitioning
H04W 72/20
Local resource management: control channels or signalling for resource management
H04W 72/542
Based on quality criteria: using measured or perceived quality
H04W 72/563
Based on priority criteria: of the wireless resources

Abstract

Claims23