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Radio frame sending method and device and communication network element

A technology of wireless frame and sending unit, which is applied in the field of wireless frame sending, and can solve problems such as inability to transmit data

Active Publication Date: 2012-11-14
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the channel information measurement is introduced, the existing technology does not specify which access category to use for the notification frame (such as NDPA) of the channel information measurement, which undoubtedly causes inconvenience to the wireless frame sending the channel information measurement, and may The data cannot be transmitted because the channel information cannot be obtained

Method used

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  • Radio frame sending method and device and communication network element
  • Radio frame sending method and device and communication network element

Examples

Experimental program
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Embodiment 1

[0038] Suppose there are six stations in one BSS: one AP and five STAs (STA1, STA2, STA3, STA4, STA5). At a certain moment, the AP has no data to send in each access category, but needs to perform channel information measurement on stations STA1 and STA2. The AP randomly selects an access category to send NDPA, for example, AC_BE is randomly selected. After AC_BE competes for the channel, it sends NDPA to measure the channel information of STA1 and STA2. The subsequent Sounding Poll frame uses the same access type as NDPA. In order to make the data transmission in TXOP more reliable, you can send RTS or CTS. RTS or CTS use the same access category AC_BE as NDPA.

Embodiment 2

[0040] This embodiment is an embodiment of a transmission method in the channel information measurement process of the present invention. In this embodiment, implementing the transmission in the process of channel information measurement mainly includes the following steps:

[0041] Suppose there are six stations in one BSS: one AP and five STAs (STA1, STA2, STA3, STA4, STA5). At a certain moment, the AP has no data to send in each access category, but needs to perform channel information measurement on stations STA1 and STA2. The AP preferably sends NDPA using the highest priority access category AC_VO. When AC_VO competes for the channel, it sends NDPA to measure the channel information of STA1 and STA2. The subsequent Sounding Poll frames use the same access category as NDPA. In order to make data transmission in TXOP more reliable, RTS can be sent before channel information measurement. or CTS. RTS or CTS uses the same access category AC_VO as NDPA.

Embodiment 3

[0043] Assume that there is one AP and any number of STAs in one BSS. At a certain moment, there is data to be sent in the access categories AC_VO, AC_BE, and AC_BK of the AP, and the AP needs to perform channel information measurement on the station STA3. The AP sends NDPA using the access category AC_VI. When AC_VI competes for the channel, it sends NDPA to measure the channel information of STA3.

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Abstract

The invention discloses a radio frame sending method which includes sending a radio frame through an arbitrary access category, wherein the radio frame is a first frame for measuring channel information. The invention discloses a radio frame sending device simultaneously. The device comprises a selecting unit and a sending unit, wherein the selecting unit is used for selecting the arbitrary access category for the first frame which is used for the channel information measurement, and the sending unit is used for sending the first frame. The invention further discloses a communication network element provided with the radio frame sending device. According to the method ,the device and the network element, successful transmission of follow-up radio frames of a frame switch sequence of the channel information measurement is guaranteed, smooth proceeding of the channel information measurement is guaranteed, therefore communication data are sent according to the obtained channel information, support of each communication network element for multiple input multiple output (MIMO) and beam forming is guaranteed, and the existing protocol is supplemented effectively.

Description

technical field [0001] The invention relates to a wireless frame sending technology, in particular to a method and device for sending a wireless frame for channel information measurement, and a communication network element. Background technique [0002] Currently, in the field of wireless networks, with the rapid development of Wireless Local Area Network (WLAN, Wireless Local Area Network), the demand for WLAN coverage is increasing day by day, and at the same time, the requirement for throughput is also getting higher and higher. In the IEEE802.11 task group of the Institute of Electrical and Electronics Engineers, a series of standard WLAN technologies such as 802.11a, 802.11b, and 802.11g have been defined successively, and other task groups have emerged one after another, dedicated to the development of existing 802.11 technologies. Improved specifications, for example, the 802.11n task group proposed a high throughput (HT, High Throughput) requirement, supporting data...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/06H04W4/02
CPCH04L5/0057H04L5/00H04B7/26H04W24/02H04B7/0695H04B7/2656H04B7/2643H04W4/02H04W72/04H04W36/38H04W72/0446H04W36/0088
Inventor 韩志强姜静孙波张力邢卫民
Owner ZTE CORP
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