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

專利號
US11159960B1
公開日期
2021-10-26
申請人
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

An example data structure 456 that may include the joint OFDMA schedule may be as shown in FIG. 4C. Data structure 456 can include schedule information for each of the various slave APs 104. As such, data structure 456 can include one or more of, but is not limited to, a schedule identifier 460, a first set of information for a first slave AP, including an AP 1 identifier 464a, and an AP 1 RU assignment 468a, and also a nth set of information for an nth slave AP, including an nth AP n ID 464n, and an nth AP RU assignment 468n. There may be a set of IDs and RU assignments for each of the different slave APs 104 as represented by ellipses 472. There may be more or fewer data fields in data structure 456 as represented by ellipses 476. Further, each separate OFDMA schedule can be sent by the master AP 104 for the slave APs 104, as represented by ellipses 480.

The schedule ID 460 can include any type of identifier that identifies this schedule for the slave APs 104. Thus, the schedule ID 460 can include one or more of, but is not limited to, a numeric ID, an alphanumeric ID, a GUID, etc. This schedule ID 460 can uniquely identify this schedule amongst other schedules previously sent or to be sent by one or more master APs 104a.

Each set of data for the slave APs 104 can include an AP ID 464 and an AP RU assignment 468. The AP ID 464 can include one or more of, but is not limited to, a numeric ID, an alphanumeric ID, a GUID, a MAC address, a URL, or other type of identifier to identify the slave AP 104b. This AP ID may be similar to AP ID 428 or the slave AP ID 412.

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