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Collision detection and back-off window adaptation for multi-user MIMO transmissions

A DL-MU-MIMO, multi-user technology, applied in the field of wireless communication

Active Publication Date: 2015-10-21
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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  • Collision detection and back-off window adaptation for multi-user MIMO transmissions
  • Collision detection and back-off window adaptation for multi-user MIMO transmissions
  • Collision detection and back-off window adaptation for multi-user MIMO transmissions

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[0028] Hereinafter, various aspects of the present disclosure will be described more fully with reference to the accompanying drawings. However, the present disclosure can be embodied in many different forms, and it should not be construed as being limited to any specific structure or function given throughout the present disclosure. Rather, these aspects are provided to make the present disclosure comprehensive and complete, and to fully convey the scope of the present disclosure to those skilled in the art. Based on the teachings herein, those skilled in the art should realize that the scope of the present disclosure is intended to cover any aspect of the content disclosed herein, regardless of whether it is implemented independently of any other aspect of the present disclosure or is related to the present disclosure. Any combination of other aspects. For example, any number of aspects given herein can be used to implement a device or practice a method. In addition, the sc...

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Abstract

Certain aspects of the present disclosure generally apply to a wireless local area network (WLAN) where an access point (AP) has data to send to multiple stations (STAs). By using the Downlink Spatial Division Multiple Access (DL-SDMA) technique, the AP may send data at the same time towards multiple STAs. Certain aspects of the present disclosure provide techniques and apparatuses for detecting that a multiuser multiple-input multiple-output (MU-MIMO) transmission has suffered a collision and to adapting a contention window (CW) size for a backoff counter applied to a subsequent MU-MIMO transmission.

Description

[0001] Cross references to related applications [0002] This patent application claims the priority of U.S. Provisional Patent Application No. 61 / 331,631 filed on May 5, 2010 and U.S. Provisional Patent Application No. 61 / 361,863 filed on July 6, 2010. The contents of these two applications are incorporated into this article. Technical field [0003] In a nutshell, certain aspects of the present disclosure relate to wireless communications. Specifically, certain aspects of the present disclosure relate to detecting collisions in multi-user multiple input multiple output (MU-MIMO) transmissions, and adjusting subsequent MU-MIMO The size of the fallback window for the transfer. Background technique [0004] In order to solve the problem of increased bandwidth requirements required by wireless communication systems, different solutions are being developed to allow multiple user terminals to communicate with a single access point through shared channel resources and achieve high data ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W74/08H04L45/16
CPCH04W74/085H04B7/0452H04L1/1867H04L2001/0093H04W84/12H04W74/0816H04B7/0413H04L1/187
Inventor S·P·亚伯拉罕S·梅林V·K·琼斯四世M·M·文廷克H·桑帕斯
Owner QUALCOMM INC