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Reuse of access point guidance

A technology of indication and preamble, applied in the direction of network topology, power management, electrical components, etc., can solve problems such as mutual interference in transmission

Active Publication Date: 2022-02-01
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Transmissions from different devices within the OBSS may interfere with each other, and the techniques used by each device to limit this interference may limit the efficiency of communication between STAs and APs within the OBSS

Method used

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  • Reuse of access point guidance
  • Reuse of access point guidance
  • Reuse of access point guidance

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Experimental program
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Embodiment Construction

[0034] In some wireless communication systems, as part of the Basic Service Set (BSS), a transmitting wireless device such as a station (STA) or access point (AP) may perform a Clear Channel Assessment (CCA) procedure to determine the Availability of the radio frequency spectrum. Multiple BSSs may be relatively close together, and transmissions from overlapping BSSs (OBSSs) may affect a device's ability to gain access to or "win" a channel. For example, if a STA detects a packet (eg, a preamble) from another device, the STA may abstain from transmitting for the duration of the detected packet when the received power of the packet is above a threshold. However, if a STA detects a packet from another device, the STA may still transmit if the received power of the packet is below a threshold. In some cases, if a STA's transmit (TX) power decreases by a certain amount, the STA may increase the threshold accordingly.

[0035] The use of an adjustable OBSS preamble detection (PD) ...

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Abstract

Methods, systems and devices for wireless communications are described. A wireless device may receive a configuration message including Overlapping Basic Service Set (OBSS) coordination parameters. OBSS coordination parameters may be used to select the OBSS preamble detection (PD) threshold or transmission (TX) power or both. For example, the OBSS coordination parameters may include an indication of the OBSS PD threshold or TX power or a range of the OBSS PD threshold or TX power. In some cases, the coordination parameters may include selection criteria that may be used to select the indicated OBSS PD threshold or TX power. Additionally or alternatively, a range of selection criteria may be used to select from a range of OBSS PD thresholds and TX powers. The wireless device can communicate with the AP or other devices using the selected OBSS PD threshold or TX power.

Description

[0001] cross reference [0002] This patent application claims the benefit of U.S. Patent Application Serial No. 15 / 439,510, filed February 22, 2017, by Barriac et al., titled "AccessPoint Guided Reuse," and titled "AccessPoint Guided Reuse," filed February 23, 2016 by Barriac et al. The priority of U.S. Provisional Patent Application No. 62 / 298,973 for "Access Point Guided Reuse," each of which has been assigned to the assignee of the present application. technical field [0003] The following relates generally to wireless communications and, in particular, to reuse of access point guidance. Background technique [0004] Wireless communication systems are widely deployed to provide various types of communication content such as voice, video, packet data, messaging, broadcast, and so on. These systems may be multiple-access systems capable of supporting communication with multiple users by sharing available system resources (eg, time, frequency and power). A wireless netwo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W74/08H04W52/04H04W84/12H04W16/10
CPCH04W16/10H04W74/006H04W74/0808H04W52/343H04W52/40H04W52/04H04W84/12H04W52/367H04W52/34
Inventor G·D·巴里亚克S·梅林A·阿斯特尔贾迪G·谢里安周彦Q·田
Owner QUALCOMM INC