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Method and device for updating or modifying NAV (network allocation vector)

An updated and preset technology, applied in the information field, can solve the problem of low SR data transmission

Active Publication Date: 2017-06-30
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, when the NAV is updated by the above method, when the receiving power of the node receiving the above two messages is less than the preset threshold, the NAV is updated and re-updated for both the sending end and the receiving end. : Wireless Fidelity, English abbreviation: WiFi) In the system, the probability that the received power of the above two messages is less than the preset threshold is less than the probability that SR data transmission can be performed. Therefore, when the above conditions are met, the NAV is updated, resulting in SR Lower chance of data transfer

Method used

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  • Method and device for updating or modifying NAV (network allocation vector)
  • Method and device for updating or modifying NAV (network allocation vector)

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Embodiment Construction

[0280] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0281] Embodiments of the present invention provide a method for updating or modifying NAV, which can improve the chance of SR data transmission, such as figure 1 As shown, the method includes:

[0282] 101. A node of the first link monitors a physical layer convergence procedure protocol data unit PPDU sent by a node in an overlapping basic service set OBSS.

[0283] Among them, the nodes in the overlapping basic service set (English full name: overlap Basic...

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Abstract

The invention discloses a method and device for updating or modifying a NAV (network allocation vector), and relates to the field of information, and the transmission opportunity of SR (spatial reuse) data can be improved. The method comprises the following steps: a node of a first link firstly monitors physical layer convergence process protocol data unit PPDU for node sending in an overlay basic service set OBSS, wherein the node in the OBSS comprises a sending end node of a second link and a receiving end node of the second link, wherein the first link is a spatial reuse link, and the second link is the link in communicating; and then the network allocation vector NAV is updated or modified according to the PPDU, and / or the receiving power of the PPDU. The method disclosed by the invention is suitable for the NAV updating or modification through the sending end node of the SR link and the receiving end node of the SR link.

Description

technical field [0001] The present invention relates to the field of information technology, in particular to a method and device for updating or modifying NAV. Background technique [0002] With the development of information technology, wireless local area network (English full name: Wireless Local Area Networks, English abbreviation: WLAN) also develops accordingly. The existing 802.11ac-based WLAN system adopts OFDM modulation mode. The Access Control (English abbreviation: MAC) layer does not consider data transmission based on spatial reuse (English full name: Spatial Reuse, English abbreviation: SR). Therefore, when the number of users is relatively dense, the conflict rate of competition among users in order to send data It will be greatly improved, so it is necessary to consider the data transmission of SR, and update the network allocation vector (English full name: Network Allocation Vector, English abbreviation: NAV) to improve data transmission efficiency and im...

Claims

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Application Information

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IPC IPC(8): H04W72/04H04W74/08H04W84/12
CPCH04W74/0816H04W84/12H04W72/20H04L9/40
Inventor 杨懋李波马驰翔罗俊
Owner HUAWEI TECH CO LTD
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