Downlink multi-user data transmission method and system in wireless local area network, and access point

A data transmission method and wireless local area network technology, applied in wireless communication, advanced technology, climate sustainability, etc., can solve the problem that no one has proposed downlink multi-user data transmission technical scheme, etc., to achieve energy saving of sites and solve scheduling problems. , the effect of reducing complexity

Inactive Publication Date: 2016-04-20
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, no one has proposed a technical solution for downlink multi-user data transmission

Method used

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  • Downlink multi-user data transmission method and system in wireless local area network, and access point
  • Downlink multi-user data transmission method and system in wireless local area network, and access point
  • Downlink multi-user data transmission method and system in wireless local area network, and access point

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] The method for downlink multi-user data transmission in the WLAN of this embodiment, such as figure 2 shown, including the following steps:

[0047] Step 201: the AP sends the first wireless frame;

[0048] Here, the first wireless frame includes more than one station identifier and resource indication information used by each station to receive the second wireless frame subsequent to the first wireless frame.

[0049] The AP sends the first wireless frame to each station.

[0050] When the sending bandwidth of the AP is 40MHz, 80MHz or 160MHz, the sending of the first wireless frame specifically includes:

[0051] The AP sends the first wireless frame in a repetition mode on each 20 MHz bandwidth.

[0052] The first wireless frame may be a management frame or a control frame of the MAC layer, and a frame header control field of the first wireless frame indicates that a function of the first wireless frame is to implement resource scheduling.

[0053] The first rad...

Embodiment 2

[0066] The method for downlink multi-user data transmission in the WLAN of this embodiment, such as image 3 shown, including the following steps:

[0067] Step 301: the AP sends the first wireless frame to each station;

[0068] Here, the first wireless frame includes more than one station identifier and resource indication information used by each station to receive the second wireless frame subsequent to the first wireless frame.

[0069] When the sending bandwidth of the AP is 40MHz, 80MHz or 160MHz, the sending of the first wireless frame specifically includes:

[0070] The AP sends the first wireless frame in a repetition mode on each 20 MHz bandwidth.

[0071] The first wireless frame may be a management frame or a control frame of the MAC layer, and a frame header control field of the first wireless frame indicates that a function of the first wireless frame is to implement resource scheduling.

[0072] The first radio frame may include uplink and downlink transmiss...

Embodiment 3

[0086] The application scenario of this embodiment is: in one BSS, there is 1 AP and 5 stations (represented as STA1, STA2, STA3, STA4 and STA5), and the AP and 5 stations all conform to the IEEE802.11ax standard Equipment; AP and 5 stations all support 80MHz bandwidth transmission and reception, AP schedules STA1, STA2, STA3 and STA4 for downlink multi-user data (OFDMA) transmission, and the minimum scheduling granularity of OFDMA transmission frequency band is 20MHz. Among them, 20MHz is a basic sub-channel bandwidth in the current WLAN standard. The scheduling granularity of 20MHz is equivalent to sub-channel-level scheduling. The available bandwidth includes 4 schedulable 20MHz bandwidths. It is assumed that the first 20MHz bandwidth is called the main channel.

[0087]The AP sends the first wireless frame on the 80MHz bandwidth. The first wireless frame is constructed using a 20MHz frame format, and is sent in a repeated pattern on each 20MHz bandwidth of the 80MHz bandwid...

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Abstract

The invention discloses a downlink multi-user data transmission method in a wireless local area network (WLAN). The method comprises an access point (AP) sends a first radio frame; the first radio frame includes more than one site identifier and each site sends the resource indication information used by a subsequent second radio frame after the first radio frame; and the AP sends the second radio frame. The invention also discloses an AP and a downlink multi-user data transmission system in a WLAN.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a downlink multi-user data transmission method, system and access point (AP, AccessPoint) in a wireless local area network (WLAN, WirelessLocalAreaNetwork). Background technique [0002] In WLAN, an access point (AP, AccessPoint) and multiple non-access point stations (non-APSTA, non-APSTAtion) associated with the AP form a basic service set (BSS, BasicServiceSet), such as figure 1 shown. WLAN is mainly a time-division network based on a competitive access mechanism. Under the infrastructure network, only one sender can send data at the same time, that is, when a station (transmits data, other stations remain silent, and the AP sends data to non -APSTA is called downlink transmission; otherwise it is called uplink transmission. [0003] At present, with the increase of users who use WLAN for data communication, the load of WLAN is also increasing, and with the incr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W52/02H04W72/12
CPCY02D30/70
Inventor 田开波邢卫民姚珂
Owner ZTE CORP
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