公开(公告)号：US20240298275A1

公开(公告)日：2024-09-05

申请号：US18177041

申请日：2023-03-01

申请人： Cisco Technology, Inc.

发明人： Pooya MONAJEMI ,  Vishal S. DESAI ,  Malcolm M. SMITH

IPC分类号： H04W52/38 ,  H04W16/24 ,  H04W52/22 ,  H04W52/36 ,  H04W72/54

CPC分类号： H04W52/38 ,  H04W16/24 ,  H04W52/223 ,  H04W52/367 ,  H04W72/54

摘要： Systems and techniques for performing transmit power control for facilitating multi-band make-before-break (MBB) roaming are described. An example technique includes identifying a first access point communicating on a first band within a first cell. A second access point communicating on a second band within a second cell neighboring the first cell is identified. A target overlap between the first band and the second band is created.

公开(公告)号：US20240163863A1

公开(公告)日：2024-05-16

申请号：US18301400

申请日：2023-04-17

申请人： Cisco Technology, Inc.

发明人： John M. SWARTZ ,  Malcolm M. SMITH ,  Pooya MONAJEMI

IPC分类号： H04W72/121 ,  H04W76/15

CPC分类号： H04W72/121 ,  H04W76/15

摘要： Techniques for wireless multi-link operation (MLO) are disclosed. These techniques include determining that a first wireless station (STA), in a wireless network comprising a wireless access point (AP) and a plurality of peer-to-peer (P2P) STAs, comprises a non-simultaneous transmit and receive (NSTR) constraint. The techniques further include allocating one or more wireless links relating to MLO for the AP and the plurality of P2P STAs, based on the NSTR constraint, and initiating transmission between the AP and one or more of the P2P STAs using MLO and the allocated one or more wireless links.

公开(公告)号：US20240015789A1

公开(公告)日：2024-01-11

申请号：US18188263

申请日：2023-03-22

申请人： Cisco Technology, Inc.

发明人： Brian D. HART ,  Pooya MONAJEMI

IPC分类号： H04W74/08

CPC分类号： H04W74/0816 ,  H04W74/0891

摘要： Described herein are systems and methods for reducing collisions in a wireless network with overlapping basic service sets by synchronizing contention slots among stations (access points or non-access point clients), some of which are out of range, competing for the use of the wireless medium. In some embodiments, the contention slots of competing stations are synchronized by controlling the time of transmission and the time of the spacing between frames to be an integer multiple of the time of a contention slot. In some embodiments, slot boundaries are enforced by controlling guard intervals or by trigger-based uplink communications. In other embodiments, a central network controller, such as a network controller, synchronizes slots when an access point or station joins the wireless network or uses a neighbor discovery protocol among access points. The contention slots are synchronous in all cases throughout the overlapping basic service sets.

公开(公告)号：US20230388350A1

公开(公告)日：2023-11-30

申请号：US18361779

申请日：2023-07-28

申请人： Cisco Technology, Inc.

发明人： Malcolm M. SMITH ,  Jerome HENRY ,  Pooya MONAJEMI ,  Brian D. HART ,  David S. KLOPER

IPC分类号： H04L9/40 ,  H04W12/08

CPC分类号： H04L63/20 ,  H04W12/08

摘要： A device includes a memory and a hardware processor communicatively coupled to the memory. The hardware processor determines that a computing device communicatively coupled to an access point performed an action with respect to the access point and in response to determining that the action causes a deviation from a multi-user uplink policy of the access point, transmits a disciplinary message to the computing device.

公开(公告)号：US20230147828A1

公开(公告)日：2023-05-11

申请号：US17454340

申请日：2021-11-10

申请人： Cisco Technology, Inc.

发明人： Vishal S. DESAI ,  Pooya MONAJEMI ,  Young Il CHOI ,  Santosh B. KULKARNI

IPC分类号： H04W24/08 ,  H04B17/345 ,  H04L1/00

CPC分类号： H04W24/08 ,  H04B17/345 ,  H04L1/0013

摘要： Dynamic spectrum access mode based on station capabilities is provided by categorizing functionalities of Access Points (APs) and mobile stations (STA) in a wireless network; identifying interference induced by external signaling devices on channels in the wireless network; calculating an impact factor of the interference based on proximity of the external signaling devices to the wireless network, a pattern of the external signaling devices, and an extent of overlap with frequencies used by the external signaling devices and the wireless network; and in response to identifying a given STA that is paired with a given AP in the wireless network, wherein the given STA and the given AP are both categorized as being capable of both multilink communications and preamble puncturing, assigning network resources for the given STA to communicate with the given AP via one of multilink communications or preamble puncturing based on the impact factor of the interference.

公开(公告)号：US20220225200A1

公开(公告)日：2022-07-14

申请号：US17144931

申请日：2021-01-08

申请人： Cisco Technology, Inc.

发明人： Malcolm Muir SMITH ,  Brian D. HART ,  Pooya MONAJEMI ,  Santosh Babaji KULKARNI ,  Vishal Satyendra DESAI

IPC分类号： H04W36/18 ,  H04W36/00 ,  H04W36/32 ,  H04W36/22 ,  H04W8/12 ,  H04L1/16

摘要： Seamless client roaming for Multi-Link Device (MLD) clients may be provided. First, a Traffic Identifier (TID)-to-link map may be established by an Upper Service Access Point (U-SAP) of a multi-AP MLD entity that assigns subsets of TIDs to at least two links of the entity. For example, a client device logically associates with the U-SAP, while the client device physically connects to a first and second AP of the entity on a respective first and second link, where the first and second AP include first and second Lower Service Access Points (L-SAPs) and are non-collocated. Next, using the map, data received at the U-SAP is directed over one of the two links for transmission to the client device. Further, frame aggregation and block acknowledgment functions may be performed by one of the first or second L-SAP based on whether data transmission is over the first or second link.

公开(公告)号：US20200092912A1

公开(公告)日：2020-03-19

申请号：US16133580

申请日：2018-09-17

申请人： Cisco Technology, Inc.

发明人： Gautam Dilip BHANAGE ,  Pooya MONAJEMI ,  Brian Donald Hart

IPC分类号： H04W74/08 ,  H04B17/318 ,  H04W16/18

摘要： An access point determines the highest signal strength at which it can detect transmissions from other access points or overlapping-basic-service-set (OBSS) client devices associated with the other access points. The access point sets an OBSS packet-detect threshold to the lesser of a minimum cell-size threshold or the highest signal strength and sets a receiver start-of-packet (RxSOP) threshold to the OBSS packet-detect threshold minus an offset. The access point avoids decoding incoming packets when respective signal strengths of the incoming packets do not satisfy the RxSOP threshold. The access point also avoids initiating transmission when incoming packets from the other access points or from the OBSS client devices have signal strengths that satisfy the OBSS packet-detect threshold.

公开(公告)号：US20180295538A1

公开(公告)日：2018-10-11

申请号：US15479912

申请日：2017-04-05

申请人： Cisco Technology, Inc.

发明人： Pooya MONAJEMI ,  Vishal S. DESAI ,  Young Il CHOI ,  Tak Ming F. PANG

IPC分类号： H04W28/02 ,  H04W4/20 ,  H04L29/12 ,  H04W36/22 ,  H04W36/06 ,  H04W52/26 ,  H04W72/04

CPC分类号： H04W28/0252 ,  H04W4/21 ,  H04W36/06 ,  H04W36/22 ,  H04W52/26 ,  H04W52/283 ,  H04W52/38 ,  H04W84/12

摘要： Embodiments herein describe control logic for seamlessly switching client devices between radios co-located on the same network device or between radios located on different network devices that have overlapping coverage areas. In one embodiment, the radios are assigned different channels in the same frequency band. To move the client devices between the radios, one of the radios transmits a Channel Switch Announcement (CSA) which instructs the client devices serviced by a first radio to switch to a channel assigned to a second, different radio. For example, the CSA may be used when the first radio fails, is upgraded, performs a Channel Availability Check (CAC), is overloaded, and the like. After the CSA is transmitted, the second radio spoofs the service identifier of the first radio so to the perspective of the client devices, they are still communicating with the first radio.

公开(公告)号：US20240015826A1

公开(公告)日：2024-01-11

申请号：US18172970

申请日：2023-02-22

申请人： Cisco Technology, Inc.

发明人： Malcolm M. SMITH ,  Indermeet S. GANDHI ,  Pooya MONAJEMI ,  Stephen M. ORR

IPC分类号： H04W76/15 ,  H04W28/02

CPC分类号： H04W76/15 ,  H04W28/0236

摘要： Techniques for facilitating client mobility without performing re-association are described. An example technique includes receiving, from a first access point (AP), an indication of at least one second AP neighboring the first AP. A multi-link association is performed. The multi-link association includes establishing a first link with the first AP and pre-establishing a second link with the second AP. After performing the multi-link association, the first AP is communicated with at a first instance in time via the first link.

公开(公告)号：US20240015642A1

公开(公告)日：2024-01-11

申请号：US18066870

申请日：2022-12-15

申请人： Cisco Technology, Inc.

发明人： Pooya MONAJEMI ,  Brian D. HART ,  Vishal S. DESAI ,  Peiman AMINI ,  Ardalan ALIZADEH

IPC分类号： H04W48/18 ,  H04W24/04 ,  H04W76/38

CPC分类号： H04W48/18 ,  H04W24/04 ,  H04W76/38 ,  H04W88/06

摘要： A system includes a memory and a processor communicatively coupled to the memory. The processor, in response to determining that a first number of transmissions over a first link with a first frequency has failed, selects a second link with a second frequency for transmission. The second frequency is lower than the first frequency. The processor also, in response to determining that a second number of transmissions over the second link has failed, one or more of (i) stop the transmissions over the second link or (ii) begins transmissions over a third link with a third frequency. The second number is greater than the first number.