公开(公告)号：US09226318B2

公开(公告)日：2015-12-29

申请号：US14020348

申请日：2013-09-06

Applicant: Nokia Technologies Oy

Inventor： Andre Mendes Cavalcante ,  Sayantan Choudhury ,  Fabiano Chaves ,  Esa Juhani Tuomaala ,  Fuad Mousse Abinader, Jr. ,  Erika Portela Lopes De Almeida ,  Robson Domingos Vieira ,  Klaus Franz Doppler

IPC: H04Q9/00 ,  H04W74/08

CPC classification number: H04W74/0816

Abstract: There is provided a method, comprising: receiving, by a target node of a wireless access network, a signal from a first source node; determining the angular sector in which the first source node is located with respect to the target node; responding to the signal by both transmitting a first message omni-directionally and transmitting a second message directionally towards the angular sector; and establishing a first resource reservation on a frequency channel at least partly on the basis of transmitting the first message and the second message, wherein the first resource reservation is for performing directional data transfer with the first source node.

Abstract translation: 提供了一种方法，包括：由无线接入网络的目标节点接收来自第一源节点的信号; 确定所述第一源节点相对于所述目标节点位于的角扇区; 响应所述信号，通过全方向地发送第一消息并向所述角扇区定向发送第二消息; 以及至少部分地基于发送所述第一消息和所述第二消息在频道上建立第一资源预留，其中所述第一资源预留用于执行与所述第一源节点的方向性数据传送。

公开(公告)号：US10693618B2

公开(公告)日：2020-06-23

申请号：US15763655

申请日：2015-09-28

Applicant: Nokia Technologies Oy

Inventor： Enrico-Henrik Rantala ,  Wessam Afifi Ahmed ,  Jarkko Kneckt ,  Janne Marin ,  Mika Kasslin ,  Esa Tuomaala ,  Olli Alanen ,  Sayantan Choudhury

IPC: H04L5/00 ,  H04W72/12

Abstract: This document discloses a solution for carrying out narrowband communications in a wireless network. According to an aspect, a method comprises in an apparatus: detecting at least one content notification message indicating contents of each of a plurality of messages frequency-multiplexed with a discovery message to parallel sub-channels of a channel in a bi-directional wireless network; selecting autonomously a sub-channel on the basis of the detected content notification message; and acquiring a message through the selected sub-channel.

公开(公告)号：US09942884B2

公开(公告)日：2018-04-10

申请号：US15155407

申请日：2016-05-16

Applicant: Nokia Technologies Oy

Inventor： Namyoon Lee ,  Sarabjot Singh ,  Esa Tuomaala ,  Sayantan Choudhury

IPC: H04B7/02 ,  H04W72/04 ,  H04L5/00 ,  H04B7/0456 ,  H04W8/26

CPC classification number: H04W72/0413 ,  H04B7/0452 ,  H04B7/0456 ,  H04L5/0007 ,  H04W8/26

Abstract: Uplink data indication transmission(s) are received over a subband and over OFDM symbol(s) from STA(s) in a wireless communication system. The received uplink data indication transmission(s) are decoded to determine a unique codeword for each of the STA(s). From the determined unique codewords and using a mapping between station IDs and codewords in a codebook, a unique station ID is determined for each of the STA(s). For STA(s) determined to have sent the uplink data indication, other operations are performed to prepare for subsequent reception of uplink data from the STA(s) determined to have sent the uplink data indication.

公开(公告)号：US20170079068A1

公开(公告)日：2017-03-16

申请号：US15248029

申请日：2016-08-26

Applicant: Nokia Technologies Oy

Inventor： Wessam Afifi Ahmed ,  Enrico-Henrik Rantala ,  Esa Juhani Tuomaala ,  Sayantan Choudhury

IPC: H04W74/08

CPC classification number: H04W74/0816 ,  H04W84/12

Abstract: When contending for access to a radio channel (for example CSMA/CA in Wi-Fi), an apparatus selects a first clear channel assessment (CCA) threshold that is higher than a minimum; determines to temporarily use a second CCA threshold that is lower than the first CCA threshold; and based on this determination it selects the second CCA threshold for a specified time period. In one embodiment this determination is based on the apparatus' use of a spectrum relative to a threshold usage level which may be calculated as a number of successful transmissions by the apparatus on the spectrum over a predefined time period; and/or as a deferring time experienced by the apparatus with respect to the spectrum over a predefined time period. In an embodiment the specified time period comprises a backoff time, and the determination to temporarily use the second CCA threshold is triggered by a periodic timer.

Abstract translation: 当竞争访问无线电信道（例如Wi-Fi中的CSMA / CA）时，设备选择高于最小值的第一清除信道评估（CCA）阈值; 确定临时使用低于第一CCA阈值的第二CCA阈值; 并且基于该确定，它选择指定时间段的第二CCA阈值。 在一个实施例中，该确定是基于装置对相对于阈值使用水平的频谱的使用，阈值使用水平可以被计算为装置在预定时间段内在频谱上的成功传输的数量; 和/或作为设备在预定时间段内相对于频谱经历的延迟时间。 在一个实施例中，指定的时间段包括退避时间，并且临时使用第二CCA阈值的确定由周期性定时器触发。

公开(公告)号：US20160183217A1

公开(公告)日：2016-06-23

申请号：US15054356

申请日：2016-02-26

Applicant: Nokia Technologies Oy

Inventor： Chittabrata Ghosh ,  Sayantan Choudhury

IPC: H04W72/00 ,  H04W72/04 ,  H04W48/10 ,  H04W4/08

CPC classification number: H04W48/20 ,  H04W4/08 ,  H04W48/10 ,  H04W52/02 ,  H04W72/005 ,  H04W72/0446 ,  Y02D70/00 ,  Y02D70/122 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/164

Abstract: Methods, apparatus and program products are disclosed for allowing wireless devices in two wireless access networks whose coverage areas overlap to communicate with their respective access nodes. Groups may be assigned to wireless devices in the access networks and the groups may be used by wireless devices in the access networks to determine whether to access a communication medium or not. Received powers may also be used by wireless devices in the access networks to determine whether or not to access a communication medium. A wireless device in a first access network can determine whether to access (e.g., compete for access to) the communication medium by comparing a measured power of transmission from a second access node with an indication of a minimum received power above which wireless devices in a second access network formed by a second access node are allowed to contend for access to the communication medium.

公开(公告)号：US10142996B2

公开(公告)日：2018-11-27

申请号：US14791295

申请日：2015-07-03

Applicant: Nokia Technologies Oy

Inventor： Sarabjot Singh ,  Sayantan Choudhury ,  Enrico-Henrik Rantala ,  Namyoon Lee ,  Esa Juhani Tuomaala

IPC: H04W72/08 ,  H04W74/08

Abstract: An access point in a random access wireless network is presented, which performs medium access control for transmissions from a plurality of stations to the access point using a carrier sense multiple access protocol. The CSMA protocol is based on the access point having a variable sensitivity level to detecting other transmissions on a wireless channel in order to avoid data collisions. In a dense network environment, the sensitivity level can be reduced to avoid detecting transmissions to other access points, and thus improve area efficiency.

公开(公告)号：US10123352B2

公开(公告)日：2018-11-06

申请号：US15248029

申请日：2016-08-26

Applicant: Nokia Technologies Oy

Inventor： Wessam Afifi Ahmed ,  Enrico-Henrik Rantala ,  Esa Juhani Tuomaala ,  Sayantan Choudhury

IPC: H04W74/08 ,  H04W84/12

Abstract: When contending for access to a radio channel (for example CSMA/CA in Wi-Fi), an apparatus selects a first clear channel assessment (CCA) threshold that is higher than a minimum; determines to temporarily use a second CCA threshold that is lower than the first CCA threshold; and based on this determination it selects the second CCA threshold for a specified time period. In one embodiment this determination is based on the apparatus' use of a spectrum relative to a threshold usage level which may be calculated as a number of successful transmissions by the apparatus on the spectrum over a predefined time period; and/or as a deferring time experienced by the apparatus with respect to the spectrum over a predefined time period. In an embodiment the specified time period comprises a backoff time, and the determination to temporarily use the second CCA threshold is triggered by a periodic timer.

公开(公告)号：US09826474B2

公开(公告)日：2017-11-21

申请号：US15054356

申请日：2016-02-26

Applicant: Nokia Technologies Oy

Inventor： Chittabrata Ghosh ,  Sayantan Choudhury

IPC: H04W4/00 ,  H04W48/20 ,  H04W52/02 ,  H04W4/08 ,  H04W48/10 ,  H04W72/00 ,  H04W72/04

CPC classification number: H04W48/20 ,  H04W4/08 ,  H04W48/10 ,  H04W52/02 ,  H04W72/005 ,  H04W72/0446 ,  Y02D70/00 ,  Y02D70/122 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/164

Abstract: Methods, apparatus and program products are disclosed for allowing wireless devices in two wireless access networks whose coverage areas overlap to communicate with their respective access nodes. Groups may be assigned to wireless devices in the access networks and the groups may be used by wireless devices in the access networks to determine whether to access a communication medium or not. Received powers may also be used by wireless devices in the access networks to determine whether or not to access a communication medium. A wireless device in a first access network can determine whether to access (e.g., compete for access to) the communication medium by comparing a measured power of transmission from a second access node with an indication of a minimum received power above which wireless devices in a second access network formed by a second access node are allowed to contend for access to the communication medium.

公开(公告)号：US09578536B2

公开(公告)日：2017-02-21

申请号：US14902914

申请日：2013-07-05

Applicant: Nokia Technologies Oy

Inventor： Fuad Mousse Abinader, Jr. ,  Fabiano Chaves ,  Erika Portela Lopes De Almeida ,  Andre Mendes Cavalcante ,  Robson Domingos Vieira ,  Sayantan Choudhury ,  Klaus Franz Doppler ,  Mika Ilkka Tapani Kasslin

IPC: H04B17/00 ,  H04W24/10 ,  H04W4/00 ,  H04W52/02 ,  H04W4/06 ,  H04W4/08 ,  H04W74/08

CPC classification number: H04W24/10 ,  H04W4/00 ,  H04W4/06 ,  H04W4/08 ,  H04W52/0216 ,  H04W52/0219 ,  H04W74/08 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/146 ,  Y02D70/22

Abstract: Methods, apparatuses, and computer programs for assigning measurement groups in a wireless network are disclosed. The measurement group may be announced by measurement group information comprised in a broadcast message transmitted in the wireless network. Reporting may be triggered by transmission of a request-to-report message transmitted in the wireless network.

Abstract translation: 公开了用于在无线网络中分配测量组的方法，装置和计算机程序。 测量组可以由包括在无线网络中发送的广播消息中的测量组信息来通知。 可以通过在无线网络中发送的请求到报告消息的传送来触发报告。

公开(公告)号：US20160295434A1

公开(公告)日：2016-10-06

申请号：US15055983

申请日：2016-02-29

Applicant: Nokia Technologies Oy

Inventor： Hossein Ali Safavi Naeini ,  Sayantan Choudhury ,  Klaus Franz Doppler

IPC: H04W24/08 ,  H04L12/807 ,  H04L12/26 ,  H04W40/04

CPC classification number: H04L47/27 ,  H04L5/0007 ,  H04W40/04 ,  H04W74/0825 ,  H04W84/12 ,  H04W88/08

Abstract: One embodiment is directed to a method comprising selecting a group of packets for at least one access category, determining a set of contention parameters based on the at least one access category, transmitting the selected group of packets by using the determined set of contention parameters, obtaining information about collision of the transmitted group of packets, and determining an updated set of contention parameters based on the obtained collision information and a predefined condition.

Abstract translation: 一个实施例涉及一种方法，包括为至少一个访问类别选择一组分组，基于至少一个访问类别确定一组竞争参数，通过使用所确定的一组争用参数来传送所选择的分组组， 获取关于所发送的分组组的冲突的信息，以及基于所获得的冲突信息和预定义条件来确定更新的一组争用参数。