公开(公告)号：US09967833B2

公开(公告)日：2018-05-08

申请号：US14275594

申请日：2014-05-12

Applicant: QUALCOMM Incorporated

Inventor： Nachiappan Valliappan ,  Ahmed Kamel Sadek

IPC: H04W52/26 ,  H04W74/00 ,  H04W52/24 ,  H04W84/12 ,  H04W72/12 ,  H04W28/02

CPC classification number: H04W52/267 ,  H04W28/0205 ,  H04W28/0221 ,  H04W28/0236 ,  H04W52/241 ,  H04W72/1215 ,  H04W74/002 ,  H04W84/12

Abstract: Adaption of a Basic Service Set (BSS) Basic Rate Set for a Wireless Local Area Network (WLAN) Access Point (AP) may be achieved by, for example, determining a transmission power metric for one or more Subscriber Stations (STAs) associated with the AP, modifying one or more data rates in the BSS Basic Rate Set for the AP based on the transmission power metric, and transmitting the modified BSS Basic Rate Set to the one or more STAs.

公开(公告)号：US09924368B2

公开(公告)日：2018-03-20

申请号：US14192139

申请日：2014-02-27

Applicant: QUALCOMM Incorporated

Inventor： Nachiappan Valliappan ,  Tamer Adel Kadous ,  Ahmed Kamel Sadek ,  Andrei Dragos Radulescu

IPC: H04W16/14 ,  H04W72/04 ,  H04L27/00 ,  H04W52/38 ,  H04L5/00 ,  H04W52/24 ,  H04W52/34 ,  H04W52/14

CPC classification number: H04W16/14 ,  H04L5/001 ,  H04L5/0032 ,  H04L5/0073 ,  H04L27/0006 ,  H04W52/143 ,  H04W52/243 ,  H04W52/244 ,  H04W52/34 ,  H04W52/343 ,  H04W52/346 ,  H04W52/38 ,  H04W72/0453

Abstract: Apparatus and methods of wireless communications are described for determining one or more bands (e.g., guard bands in wireless local area networks (WLANs)) in unused portions of an unlicensed spectrum, positioning one or more carriers for cellular communication (e.g., long term evolution (LTE) or LTE advanced communication) in the one or more bands, and performing the cellular communication over the unlicensed spectrum using the one or more carriers. In some non-limiting example aspects, the cellular communication may be in a standalone mode and the one or more carriers may include a primary component carrier (PCC) that is positioned in a Wi-Fi guard band. In these non-limiting example aspects, the apparatus and methods may further include allocating one or more secondary component carriers (SCCs) in Wi-Fi guard bands or in Wi-Fi channels, where the one or more SCCs are opportunistically tuned or turned ON/OFF based on cell loading or backhaul constraints.

公开(公告)号：US09788361B2

公开(公告)日：2017-10-10

申请号：US14859124

申请日：2015-09-18

Applicant: QUALCOMM Incorporated

Inventor： Nachiappan Valliappan ,  Tamer Adel Kadous

IPC: H04W76/04 ,  H04L12/26 ,  H04W72/04 ,  H04W72/08 ,  H04W52/02 ,  H04W84/12 ,  H04W24/02 ,  H04W48/16

CPC classification number: H04W76/048 ,  H04L43/106 ,  H04L43/16 ,  H04W16/14 ,  H04W24/02 ,  H04W48/16 ,  H04W52/0216 ,  H04W72/0446 ,  H04W72/08 ,  H04W76/28 ,  H04W84/12 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/25

Abstract: Techniques for setting transmission parameters in a shared communication medium are disclosed. A communication method in accordance with the present disclosure may include, for example, receiving in accordance with a first RAT a first management frame indicating a first BSSID and a second management frame indicating a second BSSID different from the first BSSID, calculating a timestamp difference between a first management frame timestamp included in the first management frame and a second management frame timestamp included in the second management frame, the first BSSID and the second BSSID to a first grouping associated with a first physical access point based on the timestamp difference, and selecting one or more operating channels or setting one or more parameters of a DTX communication pattern based on the assigning, the DTX communication pattern defining activated periods and deactivated periods of communication.

公开(公告)号：US09730094B2

公开(公告)日：2017-08-08

申请号：US14446114

申请日：2014-07-29

Applicant: QUALCOMM Incorporated

Inventor： Peter Kairouz ,  Ahmed Kamel Sadek ,  Kambiz Azarian Yazdi ,  Nachiappan Valliappan

IPC: H04W4/00 ,  H04W24/08 ,  H04L1/00

CPC classification number: H04W24/08 ,  H04L1/0007 ,  H04L1/0015

Abstract: A method of interference management for a wireless device in a wireless communication system may comprise monitoring a packet error metric associated with transmissions over a communication channel of the wireless communication system, modifying a packet size attribute associated with MPDUs processed at the wireless device, identifying a bursty interference condition on the communication channel based on a change in the packet error metric in response to the modified packet size attribute, and generating a bursty interference indicator based on the identification of the bursty interference condition. Another method may comprise receiving a bursty interference indicator identifying a bursty interference condition on a communication channel of the wireless communication system, adjusting a packet size attribute associated with MPDUs processed at the wireless device based on the bursty interference indicator, and transmitting one or more MPDUs over the communication channel according to the adjusted packet size attribute.

公开(公告)号：US09655037B2

公开(公告)日：2017-05-16

申请号：US14247139

申请日：2014-04-07

Applicant: QUALCOMM Incorporated

Inventor： Patrick Stupar ,  Nachiappan Valliappan ,  Ahmed Kamel Sadek ,  Andrea Garavaglia ,  Andreas Maximilian Schenk ,  Marc Walter Werner

IPC: H04W48/20 ,  H04W48/16 ,  H04W48/14 ,  H04W48/06

CPC classification number: H04W48/20 ,  H04L43/12 ,  H04W40/244 ,  H04W48/06 ,  H04W48/14 ,  H04W48/16 ,  H04W88/08

Abstract: The present disclosure presents a method and apparatus for identifying an access point (AP) for selection by an access terminal (AT). For example, the method may include receiving a probe request by one or more APs from an AT, wherein the probe request is broadcasted by the AT to the one or more APs, generating load information and Received Signal Strength Indicator (RSSI) values of the probe request at the one or more APs, identifying an AP of the one or more APs for selection by the AT, wherein the AP for selection by the AT is identified by the one or more APs based at least on the load information and RSSI values generated at the one or more APs, and transmitting information of an AP identified by the one or more APs to the AT. As such, an improved mechanism for selecting an access point may be achieved.

公开(公告)号：US20150085683A1

公开(公告)日：2015-03-26

申请号：US14486114

申请日：2014-09-15

Applicant: QUALCOMM Incorporated

Inventor： Ahmed Kamel Sadek ,  Mohammad Naghshvar ,  Nachiappan Valliappan

IPC: H04W16/14 ,  H04L12/26

CPC classification number: H04W16/14 ,  H04L43/0894 ,  H04W72/1215

Abstract: Aspects for reducing interference between networks are provided. A signal transmitted by a first network over a communications medium using an unlicensed frequency spectrum is decoded to determine one or more parameters of a packet in the signal. A level of utilization of the communications medium by the first network can be estimated based at least in part on a signal strength of the signal and the one or more parameters. A time for communicating in a second network over the communications medium using the unlicensed frequency spectrum can be adjusted based at least in part on the level of utilization of the communications medium by the first network.

Abstract translation: 提供了减少网络间干扰的方面。 由第一网络通过使用未许可频谱的通信介质发送的信号被解码以确定信号中的分组的一个或多个参数。 可以至少部分地基于信号的信号强度和一个或多个参数来估计第一网络对通信介质的利用水平。 可以至少部分地基于第一网络对通信介质的利用水平来调整用于使用未许可频谱在通信介质上在第二网络中进行通信的时间。

公开(公告)号：US10979203B2

公开(公告)日：2021-04-13

申请号：US14475773

申请日：2014-09-03

Applicant: QUALCOMM Incorporated

Inventor： Ahmed Kamel Sadek ,  Yeliz Tokgoz ,  Mehmet Yavuz ,  Tamer Adel Kadous ,  Mingxi Fan ,  Nachiappan Valliappan

IPC: H04L5/00 ,  H04W56/00 ,  H04W88/10 ,  H04W72/12 ,  H04W16/14

Abstract: Disclosed are systems and methods for selecting an operating channel for a cellular network to reduce interference to a wireless local area network (WLAN) operated by a small cell comprising a WLAN access point and a cellular network modem. The small cell performs a channel scan of available channels, determines whether or not there is a clean channel to be the operating channel for the cellular network based on the channel scan, wherein a clean channel comprises a channel that interferes with the WLAN less than a WLAN interference threshold, and selects the clean channel as the operating channel for the cellular network based on the clean channel being available or turns off the cellular network based on no clean channel being available.

公开(公告)号：US10750506B2

公开(公告)日：2020-08-18

申请号：US16721623

申请日：2019-12-19

Applicant: QUALCOMM Incorporated

Inventor： Nachiappan Valliappan ,  Ahmed Kamel Sadek ,  Peter Gaal ,  Tamer Kadous ,  Andrei Dragos Radulescu

IPC: H04W72/04 ,  H04L29/06 ,  H04L5/14 ,  H04L5/00 ,  H04W74/08

Abstract: Techniques for managing re-contention on a shared communication medium are disclosed. In order to facilitate re-contending for access to the communication medium, an access point may adjust one or more uplink transmission parameters associated with a triggering condition for invoking a contention timer. In addition or as an alternative, the access point may mute transmission on the communication medium during one or more symbol periods designated for transmission. In addition or as an alternative, the access point may configure a timing advance to create a re-contention gap.

公开(公告)号：US10602527B2

公开(公告)日：2020-03-24

申请号：US14687411

申请日：2015-04-15

Applicant: QUALCOMM Incorporated

Inventor： Ping Xia ,  Ahmed Kamel Sadek ,  Nachiappan Valliappan

IPC: H04W72/08 ,  H04W24/08 ,  H04J3/16 ,  H04W16/14 ,  H04W72/04 ,  H04W74/08 ,  H04W84/04 ,  H04W88/10

Abstract: Techniques for channel selection and related operations in a shared spectrum environment are disclosed. In one example, a channel selector or the like may be used to select one of a number of available channels as an operating channel based on a comparison of cost functions for each of the available channels, with the cost functions being based on separate utility and penalty metrics. In another example, a channel scanner or the like may be used to trigger a channel scan in response to a channel quality metric indicating poor service for a threshold number or proportion of access terminals. In another example, an operating mode controller may be used to trigger a Time Division Multiplexing (TDM) mode on an operating channel in response to a utilization metric being above a threshold. The TDM mode may cycle operation between activated and deactivated periods in accordance with a TDM communication pattern.

公开(公告)号：US10356816B2

公开(公告)日：2019-07-16

申请号：US15240584

申请日：2016-08-18

Applicant: QUALCOMM Incorporated

Inventor： Nachiappan Valliappan ,  Ahmed Kamel Sadek ,  Peter Gaal ,  Tamer Adel Kadous ,  Andrei Dragos Radulescu

IPC: H04W74/08 ,  H04W16/14 ,  H04L5/14

Abstract: Techniques for managing re-contention on a shared communication medium are disclosed. In order to facilitate re-contending for access to the communication medium, an access point may adjust one or more uplink transmission parameters associated with a triggering condition for invoking a contention timer. In addition or as an alternative, the access point may mute transmission on the communication medium during one or more symbol periods designated for transmission. In addition or as an alternative, the access point may configure a timing advance to create a re-contention gap.