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Inter-access point scheduling and resource management system for dense deployments

專利號(hào)
US11159960B1
公開日期
2021-10-26
申請(qǐng)人
Cisco Technology, Inc.(US CA San Jose)
發(fā)明人
Robert E. Barton; Vishal Satyendra Desai; Indermeet Singh Gandhi; Jerome Henry
IPC分類
H04W24/02; H04W72/08; H04W56/00; H04B17/318; H04W84/18
技術(shù)領(lǐng)域
ap,aps,master,slave,schedule,or,ofdma,104g,stas,may
地域: CA CA San Jose

摘要

Systems and methods herein can synchronize 802.11ax Uplink (UL) and Downlink (DL) Orthogonal Frequency-Division Multiple Access (OFDMA) schedules between adjacent APs that have overlapping BSSs, which may not be solved by BSS coloring. The method includes several stages. First, the APs detect RF interference from APs with overlapping BSSs. Then, the APs conduct time synchronization between these APs. The various APs can then elect a master scheduler. The master scheduler creates and implements a master schedule between these APs to coordinate use of the radio resource.

說明書

The time stamp 432 can include a date and/or time or other information about when the secondary AP 104b sent the data structure 424. As such, the master AP 104a can determine whether the information in data structure 424 is current.

The activity information 436 can include information about the amount of bits or bytes (e.g., the bandwidth used) being sent or received the AP 104 to and/or from one or more stations 106. This activity information 436 can indicate the amount of load on that AP 104b. In this way, the master AP 104a can determine the amount of necessary bandwidth or resources needed for that slave AP 104b.

The current RU assignment 440 can indicate what RU the AP 104b is currently assigned. In this way, the master AP 104a, if possible, can maintain that RU assignment for the slave AP 104b. The RU assignment 440 can indicate the channel and timing of the RU assignment.

The OFDMA schedule 444 can indicate what the current schedule is for that slave AP 104b. Thus, the master AP 104a can determine to what Transmit Opportunity (TXOP), reception requirements, etc. that the AP 104b is currently assigned and may maintain that scheduling if capable. Otherwise, the master AP 104a may change the different RUs and timing of the transmission and/or reception of data for the slave AP 104b.

權(quán)利要求

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