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A wireless channel access method and system

A wireless channel and access method technology, applied in the field of wireless channel access methods and systems, can solve the problems of increased access delay, huge signaling overhead, collisions, etc., achieve low power consumption, prolong battery life, reduce The effect of system overhead

Active Publication Date: 2019-01-25
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the application scenarios of 802.11ah, such as smart meter reading systems, environmental monitoring sites, smart home systems, etc., are characterized by a large number of sites. This method is suitable for 802.11ah systems where the number of sites is dozens of times that of traditional APs. , the signaling overhead will be huge
Moreover, an AP may be associated with more than 6,000 stations at the same time, so many stations accessing the channel at the same time will cause a large number of collisions, resulting in an increase in access delay

Method used

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  • A wireless channel access method and system
  • A wireless channel access method and system
  • A wireless channel access method and system

Examples

Experimental program
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Embodiment 1

[0059] In the first embodiment, the wireless frame sent by the AP is a wireless frame including access parameters of a group of stations.

[0060] Step 11, the AP broadcasts a wireless frame to allocate downlink transmission time and uplink transmission time for a group of stations;

[0061] Wherein, the access parameters carried by the wireless frame include at least one of the following: group identification information and / or station identification information of the station, downlink transmission start time, downlink transmission duration, uplink transmission start time, and uplink transmission duration.

[0062] Specifically, the parameters contained in the above wireless frame can refer to figure 2 , the wireless frame specifically includes: message type identifier, group identifier information, downlink start offset, downlink transmission duration, uplink start offset, and uplink transmission duration. Among them, the function of the message type identification is to ...

Embodiment 2

[0070] In the second embodiment, the wireless frame sent by the AP is a wireless frame including access parameters of a group of stations. The difference between the second embodiment and the first embodiment is that, regarding the parameters of the downlink transmission time, the The radio frame is a radio frame in which respective downlink transmission time is assigned to one or more stations in a group of stations.

[0071] Step 21, the AP broadcasts a wireless frame to allocate downlink transmission time and uplink transmission time for a group of stations;

[0072] Wherein, the downlink transmission time is to allocate respective downlink transmission time for one or more stations in a group of stations. The access parameters carried in the wireless frame include at least one of the following: group identification information and / or station identification information of the station, downlink transmission start time, downlink transmission duration, uplink transmission star...

Embodiment 3

[0081] In the third embodiment, the wireless frame sent by the AP is a wireless frame including access parameters of multiple groups of stations.

[0082] Step 31, the AP broadcasts a wireless frame to allocate downlink transmission time and uplink transmission time for multiple groups of stations;

[0083] Wherein, the parameters carried by the wireless frame include at least one of the following: group identification information and / or station identification information of the station, downlink transmission start time, downlink transmission duration, uplink transmission start time, and uplink transmission duration.

[0084] Specifically, the parameters contained in the above wireless frame can refer to Figure 6 , the wireless frame specifically includes: message type identification, group number, group identification information list, group 1 downlink start offset, group 1 downlink duration...group n downlink start offset, group n downlink duration, group 1 Upstream Start ...

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Abstract

The present invention provides a wireless channel access method and system. The method includes: an access station sends a wireless frame containing at least one set of station access parameters; the station receives the wireless frame, and the station is included in the In the at least one group of stations, when the stations have data to be sent, according to the access parameters of the stations in this group, the data is sent in a contention mode within the uplink transmission time in the access parameters. In the present invention, the access station sends a wireless frame containing at least one set of station access parameters, so that the station accesses the channel through competition within the uplink transmission time scheduled for itself, and performs data transmission, which can ensure low power consumption of the station At the same time, the system overhead of sending uplink transmission time parameters for each station is reduced, so as to achieve the purpose of saving power and prolonging battery life.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a method and system for accessing a wireless channel. Background technique [0002] Currently, in the wireless network field, the wireless local area network (WLAN) develops rapidly, and the demand for global WLAN coverage is increasing day by day. The IEEE802.11 working group of the Institute of Electrical and Electronics Engineers defined a series of WLAN technical standards such as 802.11a, 802.11b, and 802.11g, and then other task groups emerged one after another to develop specifications involving the improvement of existing 802.11 technologies. For example, the 802.11ah task group mainly uses the resources of the license-free frequency band below the 1GHz frequency band to support new network applications such as smart grids, sensor networks, and cellular network load sharing. [0003] In 802.11, a station (Station, STA) is divided into an access station (Acce...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W52/02H04W74/08
CPCH04W52/0209H04W52/0225Y02D30/70H04W74/0816
Inventor 李楠吕开颖姜静田开波孙波
Owner ZTE CORP
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