公开(公告)号：US10080159B2

公开(公告)日：2018-09-18

申请号：US14471840

申请日：2014-08-28

Applicant: QUALCOMM Incorporated

Inventor： Nachiappan Valliappan ,  Kiran Somasundaram ,  Ahmed Kamel Sadek

IPC: H04W28/08 ,  H04W16/14 ,  H04W72/08 ,  H04W28/20 ,  H04W72/12 ,  H04W74/08

CPC classification number: H04W28/08 ,  H04W16/14 ,  H04W28/20 ,  H04W72/082 ,  H04W72/085 ,  H04W72/1215 ,  H04W74/0808

Abstract: Systems and methods for dynamic bandwidth management for load-based equipment in unlicensed spectrum are disclosed. In an aspect, the disclosure provides a method for dynamic bandwidth management. The method includes obtaining training data by monitoring a plurality of channels in an unlicensed spectrum during a training period. The method further includes determining that at least a first channel of the plurality of channels is available for a transmission. The method also includes determining, based on the training data, whether to wait for an additional channel of the plurality of channels to become available for the transmission. Determining whether to wait may be based on either training data including probabilities that no additional channel is to become available within a transmission opportunity or a machine learning classification of a current state of the backoff counters based on training data including samples of previous states of backoff counters.

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：US09955503B2

公开(公告)日：2018-04-24

申请号：US14565776

申请日：2014-12-10

Applicant: QUALCOMM Incorporated

Inventor： Ahmed Kamel Sadek ,  Thomas James Christol

IPC: H04W74/08 ,  H04W16/14 ,  H04W72/12

CPC classification number: H04W74/0808 ,  H04W16/14 ,  H04W72/1215

Abstract: Systems and methods for Carrier Sense Adaptive Transmission (CSAT) communication scheme identification and mitigation in unlicensed spectrum are disclosed. The identification may comprise, for example, identifying CSAT communication based on a presence of a first signal and an absence of a second signal of a Radio Access Technology (RAT) during a period of time. The mitigation may comprise, for example, limiting transmission of at least a first signal by the RAT on a resource for a period of time associated with an adaptable duty cycle used for the CSAT communication, and transmitting a second signal by the RAT on the resource during the period of time.

公开(公告)号：US09954668B2

公开(公告)日：2018-04-24

申请号：US15074612

申请日：2016-03-18

Applicant: QUALCOMM Incorporated

Inventor： Heechoon Lee ,  Ahmed Kamel Sadek ,  Tamer Adel Kadous

IPC: H04L5/22 ,  H04W16/14 ,  H04W72/04 ,  H04W16/16 ,  H04W72/08 ,  H04W52/04 ,  H04W76/28

CPC classification number: H04L5/22 ,  H04L1/188 ,  H04W16/14 ,  H04W16/16 ,  H04W52/04 ,  H04W72/042 ,  H04W72/0446 ,  H04W72/0453 ,  H04W72/082 ,  H04W76/28

Abstract: Techniques for managing co-existence on a shared communication medium are disclosed. An activation command or a deactivation command configuring an access terminal for activated operation or deactivated operation over a communication medium, respectively, may be exchanged in accordance with a Time Division Multiplexed (TDM) communication pattern defining active periods and inactive periods of communication over the communication medium. An acknowledgment message may be sent by, or received from, the access terminal in response to the activation command or the deactivation command. Communication may be activated or deactivated over the communication medium in accordance with the TDM communication pattern in response to the acknowledgment message indicating a positive acknowledgment of the activation command or the deactivation command, respectively, and not activated or deactivated over the communication medium in accordance with the TDM communication pattern in response to the acknowledgment message not indicating a positive acknowledgment of the activation or deactivation command.

公开(公告)号：US09936400B2

公开(公告)日：2018-04-03

申请号：US14852515

申请日：2015-09-12

Applicant: QUALCOMM Incorporated

Inventor： Heechoon Lee ,  Akula Aneesh Reddy ,  Ahmed Kamel Sadek ,  Tamer Adel Kadous

IPC: H04W24/02 ,  H04W72/08 ,  H04L12/26 ,  H04W16/14 ,  H04W88/10

CPC classification number: H04W24/02 ,  H04L43/16 ,  H04W16/14 ,  H04W72/082 ,  H04W88/10

Abstract: Techniques for channel selection in a shared communication medium are disclosed. A communication apparatus may include one or more transceivers, a processor, and memory coupled to the processor and configured to store data and/or instructions. The one or more transceivers may be configured to monitor signaling on a plurality of available channels associated with a communication medium. The processor may be configured to determine an interference level for each of the plurality of available channels based on the monitored signaling, determine that the interference level for each of the plurality of available channels is greater than a first threshold, determine whether a triggering condition is met, and select the first channel of the plurality of channels as an operating channel for a primary radio access technology based on the triggering condition being met, the first channel having an interference level that is greater than a second threshold.

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：US09794792B2

公开(公告)日：2017-10-17

申请号：US14853294

申请日：2015-09-14

Applicant: QUALCOMM Incorporated

Inventor： Naga Bhushan ,  John Edward Smee ,  Tingfang Ji ,  Ahmed Kamel Sadek ,  Krishna Kiran Mukkavilli ,  Joseph Binamira Soriaga

IPC: H04W16/14 ,  H04W24/08 ,  H04W74/08 ,  H04W84/04

CPC classification number: H04W16/14 ,  H04W24/08 ,  H04W74/0808 ,  H04W84/042

Abstract: Shared spectrum operation is disclosed for sharing spectrum among multiple wireless deployments. Coordination procedures between and among 2nd and 3rd Tier deployments include the use of beacons transmitted by the 2nd Tier for clearing access to spectrum occupied by 3rd Tier users and multiple 3rd Tier deployments sharing resources using a group-listen before talk (LBT) protocol, rather than a per-node LBT protocol. The 2nd Tier beacon signals are transmitted to alert 3rd Tier users of their presence, which, upon detection, will leave the particular spectrum within a predetermined time. For the shared LBT protocol, the 3rd Tier deployments share the channel with each other through an LBT with random backoff, in which the start time of clear channel assessment (CCA) procedure and the random backoff values are synchronized among nodes of the same deployment.

公开(公告)号：US09780888B2

公开(公告)日：2017-10-03

申请号：US15077316

申请日：2016-03-22

Applicant: QUALCOMM Incorporated

Inventor： Mostafa Khoshnevisan ,  Chirag Sureshbhai Patel ,  Mehmet Yavuz ,  Ahmed Kamel Sadek

IPC: H04B15/00 ,  H04L1/00 ,  H04W52/16 ,  H04W52/24 ,  H04B17/318 ,  H04B10/118 ,  H04W16/32 ,  H04W40/08 ,  H04K3/00 ,  G01S19/21 ,  H04W52/34 ,  H04W88/02 ,  H04W88/08

CPC classification number: H04B15/00 ,  G01S19/21 ,  H04B10/118 ,  H04B17/318 ,  H04K3/90 ,  H04L1/0001 ,  H04W16/32 ,  H04W40/08 ,  H04W52/16 ,  H04W52/243 ,  H04W52/34 ,  H04W88/02 ,  H04W88/08

Abstract: The disclosure provides techniques for reducing interference caused by a first device to a second device receiving a satellite-based positioning signal. A device such as a user equipment (UE) or base station (eNB) determines a threshold transmission power for a transmission frequency of the device. The device also determines a signal strength of the satellite-based positioning system signal at the device. The device then controls a transmission property of the device based on the signal strength of the satellite-based positioning system signal when a transmission power of the device at the transmission frequency satisfies the threshold. The device may also determine that reception of the satellite-based positioning system signal by the second device is likely to be affected by a transmission from the device at a transmission power that satisfies the threshold and control the transmission property when reception of the satellite-based positioning system signal is likely to be affected.

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：US09706572B2

公开(公告)日：2017-07-11

申请号：US14618704

申请日：2015-02-10

Applicant: QUALCOMM Incorporated

Inventor： Naga Bhushan ,  Durga Prasad Malladi ,  Ahmed Kamel Sadek ,  Kiran Kumar Somasundaram ,  Anastasios Stamoulis ,  Aleksandar Damnjanovic ,  Yongbin Wei ,  Dexu Lin

IPC: H04W74/08

CPC classification number: H04W74/08 ,  H04W74/0816

Abstract: Techniques are described for wireless communication. One method includes implementing, at a first node, a first access protocol to contend for access to a wireless communication medium shared by a plurality of nodes; determining whether a triggering event has occurred; and implementing, at the first node, a second access protocol to contend for access to the wireless communication medium based at least in part on a determination that the triggering event has occurred.