Data sending method, data obtaining method, data sending device and data obtaining device

A data transmission method and data technology, applied in the field of communication, can solve the problems of intense channel competition and overhead, and achieve the effect of reducing channel competition and reducing overhead

Inactive Publication Date: 2016-07-27
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The present invention provides a data sending method, obtaining method, sending device and obtaining device, so as to at least solve the problem of intense channel competition and high overhead in the related art when data is sent

Method used

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  • Data sending method, data obtaining method, data sending device and data obtaining device
  • Data sending method, data obtaining method, data sending device and data obtaining device
  • Data sending method, data obtaining method, data sending device and data obtaining device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0103] In a wireless communication system in a dense scene, there are access points AP (same as the above-mentioned first station) and stations STA1, STA2...STAn, etc. (same as the above-mentioned multiple second stations).

[0104] Figure 10 is a schematic diagram of the format of the first wireless frame according to Embodiment 1 of the present invention, as shown in Figure 10 As shown, the access point AP caches small packets for a large number of stations. The AP encapsulates the small data packets of multiple stations into a MAC PDU, that is, an MPDU, respectively, according to the MAC layer protocol data unit (Protocol Data Unit, PDU for short) format. Each MPDU includes a MAC frame header and a MAC frame body, wherein the MAC frame header includes address information of the station. Each MAC frame body is encrypted by the private key of the corresponding station. The AP aggregates the MPDUs of multiple stations in accordance with a specific MAC frame aggregation fo...

Embodiment 2

[0109] In a wireless communication system in a dense scene, there are access points AP and stations STA1, STA2...STAn and so on.

[0110] The access point AP buffers small packets with a large number of stations. The AP encapsulates the small data packets of multiple stations into an MPDU according to the MAC layer PDU format. Each MPDU includes a MAC frame header and a MAC frame body, wherein the MAC frame header includes address information of the station. Each MAC frame body is encrypted by the private key of the corresponding station. The AP aggregates the MPDUs of multiple stations in a specific MAC frame aggregation format, that is, the A-MPDU format, and aggregates each MPDU into one A-MPDU to form the data field of the wireless frame, where a special definition is added before each MPDU The delimiter, including MPDU length information, CRC check information, specific delimiter.

[0111] The AP encapsulates the indication information of the above stations, which may ...

Embodiment 3

[0115] In combination with Embodiments 1 and 2, the first MPDU in an A-MPDU of the access point carries station indication information, and the MPDUs of each station are concatenated to form the data field of the wireless frame. The AP carries broadcast or multicast type receiving address information in the physical layer signaling field in front of the data field, and / or carries user data indication information bearing multiple stations. AP sends this wireless frame. Such as Figure 14 as shown, Figure 14 is a schematic diagram of the format of a radio frame according to Embodiment 3 of the present invention.

[0116] After receiving the above wireless frame, if the receiving station successfully decodes the first MPDU in the A-MPDU in the data field, obtains the station indication information, and judges whether there is its own MPDU in the A-MPDU, and if so, according to the station indication information The location of the specific MPDU indicated, or the MPDU whose re...

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Abstract

The invention provides a data sending method, a data obtaining method, a data sending device and a data obtaining device, wherein the data sending method comprises the following steps: data which needs to be sent to a plurality of second sites is packaged into different protocol data units via a first site; the protocol data units comprise media access control MAC layer protocol data units and / or physical layer protocol data units; via the first site, the protocol data units into which the data is packaged are cascaded in a radio frame; the first site sends the radio frame to the plurality of second sites. Via the data sending method, the data obtaining method, the data sending device and the data obtaining device, a problem that fierce information channel competition and large cost are caused when the data is sent via technologies of the prior art is solved, and therefore information channel competition is alleviated and cost is reduced.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a data sending method, an acquiring method, a sending device and an acquiring device. Background technique [0002] Currently, in the field of wireless networks, wireless local area networks (Wireless Local Area Networks, WLAN for short) are developing rapidly, and the global demand for WLAN coverage is increasing day by day. The IEEE802.11 Working Group of the Institute of Electrical and Electronics Engineers has defined a series of WLAN technical standards such as 802.11a, 802.11b, 802.11g, and 802.11n. , referred to as the MAC) layer specification. Subsequently, other task groups emerged one after another, dedicated to the development of specifications related to the improvement of existing 802.11 technologies. For example, the High Efficiency WLAN (HEW) task group mainly studies how to make WLAN networks realize more efficient data transmission in dense network deployment ...

Claims

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Application Information

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IPC IPC(8): H04W28/06
CPCH04L12/189H04W12/02H04W28/065H04W74/08H04W12/033H04L12/4633H04L61/2592H04L2209/80H04W72/0446
Inventor 吕开颖孙波芮华邢卫民韩志强
Owner ZTE CORP
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