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    Wireless communication methods and apparatus
    1.
    发明授权
    Wireless communication methods and apparatus 有权

    公开(公告)号：US09913170B2

    公开(公告)日：2018-03-06

    申请号：US14773181

    申请日：2013-03-07

    Applicant: KABUSHIKI KAISHA TOSHIBA

    Inventor： Rudzi Dziyauddin ,  Fengming Cao

    IPC: G08C17/00 ,  H04W28/16 ,  H04W52/26 ,  H04W52/28 ,  H04W72/04 ,  H04W24/08 ,  H04W16/10 ,  H04W52/34 ,  H04W88/08

    CPC classification number: H04W28/16 ,  H04W16/10 ,  H04W24/08 ,  H04W52/267 ,  H04W52/283 ,  H04W52/346 ,  H04W72/0453 ,  H04W72/048 ,  H04W88/08

    Abstract: In an embodiment, a method of managing resources in a cell cluster of a wireless network is disclosed. The cell cluster comprises a plurality of cells, each cell having an inner region and an outer region. The method comprises: setting, for each cell, a power ratio, the power ratio being the ratio of the power level to be used for transmission of signals to wireless devices located in the inner region of that cell to the power level to be used for transmission of signals to wireless devices located in the outer region of that cell; allocating network resources from a plurality of network resources to wireless devices located in the outer regions; for each cell, allocating network resources to wireless devices located in the inner region of that cell from network resources of the plurality of network resources that are not allocated to wireless devices located in the outer region of that cell; receiving, for each cell, indications of a first data throughput rate for transmission of data to the wireless devices located in the outer regions; comparing, for each cell, the first data throughput rate with a threshold data rate; and decreasing the power ratio for cells in which the first data throughput rate is less than the threshold data rate.

    Wireless communications device and method
    3.
    发明授权
    Wireless communications device and method 有权

    公开(公告)号：US10560966B2

    公开(公告)日：2020-02-11

    申请号：US15504584

    申请日：2015-03-31

    Applicant: KABUSHIKI KAISHA TOSHIBA

    Inventor： Parag Gopal Kulkarni ,  Fengming Cao

    IPC: H04W74/08 ,  H04W84/12

    Abstract: Management of receiver sensitivity in a packet based wireless communication system is achieved by controlling a clear channel sensing process which determines if the channel is clear for use, governed by a sensitivity to use of the channel. The sensitivity of the clear channel sensing process is effected by monitoring transmission performance over a plurality of emissions, and making adjustments to the sensitivity based on comparison of that performance with a performance criterion.

    METHOD FOR ALLOCATING COMMUNICATION CHANNELS TO ACCESS POINTS IN A COMMUNICATIONS NETWORK
    4.
    发明申请
    METHOD FOR ALLOCATING COMMUNICATION CHANNELS TO ACCESS POINTS IN A COMMUNICATIONS NETWORK 有权
    在通信网络中分配通信信道以访问点的方法

    公开(公告)号：US20170048715A1

    公开(公告)日：2017-02-16

    申请号：US15124607

    申请日：2014-04-28

    Applicant: KABUSHIKI KAISHA TOSHIBA

    Inventor： Zhong Fan ,  Fengming Cao

    IPC: H04W16/10 ,  H04L12/723 ,  H04W72/04 ,  H04L5/00 ,  H04B17/318

    CPC classification number: H04W16/10 ,  H04B17/318 ,  H04L5/0069 ,  H04L5/0073 ,  H04L45/507 ,  H04W72/0486 ,  H04W84/12

    Abstract: A method for allocating communication channels to access points in a communications network comprising: identifying, amongst the access points, one or more interference-prone pairs of access points, wherein each interference-prone pair comprises a first access point and a second access point that are currently using the same or overlapping communication channels to communicate with their respective client user devices, determining the number N of non-overlapping channels that are available for allocating to the access points; allocating the N non-overlapping channels between the access points in such a way as minimise the number of interference-prone pairs of access points; and where an access point cannot be allocated any one of the N channels without it comprising part of an interference-prone pair, selecting a particular one of the N channels to allocate to the access point based on a selection criterion.

    Abstract translation: 一种用于将通信信道分配给通信网络中的接入点的方法，包括：在接入点之间识别一个或多个干扰容易对的接入点对，其中每个干扰容易对包括第一接入点和第二接入点， 正在使用相同或重叠的通信信道与其各自的客户端用户设备通信，确定可用于分配给接入点的非重叠信道的数量N; 在接入点之间分配N个非重叠信道，使得最小化易受干扰的接入点对的数量; 并且其中接入点不能分配任何一个N个信道而不包括干扰容易对的一部分，则基于选择标准选择N个信道中的特定一个以分配给接入点。

    Inter-cell interference mitigation
    5.
    发明授权
    Inter-cell interference mitigation 有权
    小区间干扰减轻

    公开(公告)号：US09313794B2

    公开(公告)日：2016-04-12

    申请号：US14050492

    申请日：2013-10-10

    Applicant: Kabushiki Kaisha Toshiba

    Inventor： Fengming Cao ,  Rudzi Dziyauddin ,  Tsuguhide Aoki

    IPC: H04W16/10 ,  H04W72/08 ,  H04W72/10

    CPC classification number: H04W72/082 ,  H04W72/10

    Abstract: Allocation of terminal stations to communications channels is carried out on the basis of a selection criterion. Allocation takes account of whether the terminal station is in an edge region of a cell. If so, then the list of terminal stations to be allocated is modified, to account for any interference risk from other base stations.

    Abstract translation: 基于选择标准进行终端到通信信道的分配。 分配考虑终端是否在小区的边缘区域。 如果是这样，则要分配的终端列表被修改，以解决来自其他基站的任何干扰风险。

    Controller for allocating radio resource blocks to user devices located in cells of a cellular network
    6.
    发明授权
    Controller for allocating radio resource blocks to user devices located in cells of a cellular network 有权

    公开(公告)号：US10433299B2

    公开(公告)日：2019-10-01

    申请号：US14894422

    申请日：2013-05-29

    Applicant: Kabushiki Kaisha Toshiba

    Inventor： Yichao Jin ,  Fengming Cao

    IPC: H04W72/04 ,  H04W52/24 ,  H04W16/30 ,  H04W16/10 ,  H04W72/08

    Abstract: A controller for allocating a radio resource block to a user device in a cell of a cellular network, includes a device for identifying a plurality of edge user devices within range of a first base station, a device for identifying, from the plurality of edge user devices, a first edge user device with which the first base station intends to communicate and a second edge user device presently communicating with a second base station in a neighboring cell, and a device for allocating a communication channel to the first edge user device by assigning a resource block for communications between the first edge user device and first base station. The resource block is one that will provide the highest transmission rate for the first edge user device, while differing from any resource blocks already allocated for communication between the second edge user device and the second base station.

    RAN overload control for M2M communications in LTE networks
    9.
    发明授权
    RAN overload control for M2M communications in LTE networks 有权

    公开(公告)号：US10034121B2

    公开(公告)日：2018-07-24

    申请号：US14908775

    申请日：2013-08-01

    Applicant: KABUSHIKI KAISHA TOSHIBA

    Inventor： Chetan Harsha ,  Zhong Fan ,  Fengming Cao

    IPC: H04W4/00 ,  H04W74/08 ,  H04W74/00 ,  H04L5/00 ,  H04W4/70

    Abstract: In a 3GPP LTE-A support for Mobile Type Communications, that is, M2M communications scheme, improvements of the random access are necessary to prevent random channel overload. Enhanced backoff in the presence of overload is such a mechanism, Counting the number of devices seeking RACH based on the number of received random access requests or else responses, and allocating Random Access resources on the basis of the number of requests, is another. Further, a channel aware resource allocation approach provides a way of determining, from the received requests, delay-tolerance of the M2M devices, based on which they are prioritized in accessing the random channel. Even within the prioritized devices, a smaller subset thereof may be prioritized further, according to radio conditions, to provide better access to those with higher SNR RBs.

    Wireless communication methods and apparatus
    10.
    发明授权
    Wireless communication methods and apparatus 有权
    无线通信方法和装置

    公开(公告)号：US09380468B2

    公开(公告)日：2016-06-28

    申请号：US13745410

    申请日：2013-01-18

    Applicant: Kabushiki Kaisha Toshiba

    Inventor： Sadia Quadri ,  Fengming Cao ,  Filippo Tosato

    IPC: H04W52/24 ,  H04W36/20 ,  H04W24/00 ,  H04L1/00

    CPC classification number: H04W24/00 ,  H04L1/0003 ,  H04L1/0015 ,  H04W52/243

    Abstract: In one embodiment a method of identifying interference in a wireless network is disclosed. The wireless network comprises a first base station and a second base station. The method comprises detecting an increase in an error rate in a wireless connection between the first base station and a first wireless device; comparing a reference signal power received by the first wireless device from the first base station with a threshold value; and determining that the increase in error rate is due to interference from a wireless connection between the second base station and a second wireless device if the reference signal power is greater than the threshold.

    Abstract translation: 在一个实施例中，公开了一种识别无线网络中的干扰的方法。 无线网络包括第一基站和第二基站。 该方法包括检测在第一基站和第一无线设备之间的无线连接中的错误率的增加; 将来自第一基站的第一无线设备接收的参考信号功率与阈值进行比较; 并且如果参考信号功率大于阈值，则确定错误率的增加是由于来自第二基站和第二无线设备之间的无线连接的干扰引起的。

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