公开(公告)号：US09549378B2

公开(公告)日：2017-01-17

申请号：US14579321

申请日：2014-12-22

Applicant: Intel Corporation

Inventor： Huaning Niu ,  Qinghua Li ,  Honggang Li

IPC: H04B7/00 ,  H04W52/24 ,  H04L1/00 ,  H04B7/04 ,  H04W52/26 ,  H04L5/00 ,  H04B7/06

CPC classification number: H04W52/241 ,  H04B7/0452 ,  H04B7/0632 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0015 ,  H04L1/0026 ,  H04L5/0046 ,  H04W52/262

Abstract: Embodiments of a system and method for transmitting data from an access point in a multiple user multiple input multiple output (MU-MIMO) system are provided. A first indication of signal quality (ISQ) is received at the access point from a first station and a second ISQ is received from a second station. The access point sets a first power level and a first modulation and coding scheme (MCS) for transmission of a first aggregated media access control (MAC) protocol data unit (A-MPDU) to the first station as a function of the first ISQ and an amount of payload data corresponding to the first A-MPDU. The access point also sets a second power level and a second MCS for transmission of a second A-MPDU as a function of the second ISQ and an amount of payload data corresponding to the second A-MPDU.

Abstract translation: 提供了一种用于在多用户多输入多输出（MU-MIMO）系统中从接入点发送数据的系统和方法的实施例。 信号质量（ISQ）的第一指示在第一站的接入点处接收，并且从第二站接收第二ISQ。 接入点设置第一功率电平和第一调制和编码方案（MCS），用于作为第一ISQ的函数将第一聚合介质访问控制（MAC）协议数据单元（A-MPDU）传输到第一站，以及 与第一A-MPDU对应的有效载荷数据量。 接入点还设置第二功率电平和第二MCS，用于作为第二ISQ的函数和与第二A-MPDU对应的有效载荷数据的量的第二A-MPDU的传输。

公开(公告)号：US09537593B2

公开(公告)日：2017-01-03

申请号：US14284569

申请日：2014-05-22

Applicant: Cisco Technology, Inc.

Inventor： Jonathan W. Hui ,  Jean-Philippe Vasseur ,  Wei Hong

IPC: H04J3/10 ,  H04B3/32 ,  H04B3/54 ,  H04B15/00 ,  H04L1/00 ,  H04L12/707 ,  H04L12/64

CPC classification number: H04J3/10 ,  H04B3/32 ,  H04B3/54 ,  H04B15/00 ,  H04L1/00 ,  H04L1/0015 ,  H04L12/6418 ,  H04L45/22

Abstract: In one embodiment, a method is disclosed in which physical layer information is received from one or more nodes along a path in a network. Self-interference information is also received from the one or more network nodes. The presence of self-interference along the path is identified and a transmission strategy of the one or more nodes is altered based on the identified self-interference and the received physical layer information.

Abstract translation: 在一个实施例中，公开了一种方法，其中沿着网络中的路径从一个或多个节点接收物理层信息。 还从一个或多个网络节点接收自干扰信息。 识别沿着路径的自干扰的存在，并且基于所识别的自干扰和接收的物理层信息来改变一个或多个节点的传输策略。

公开(公告)号：US09532371B2

公开(公告)日：2016-12-27

申请号：US14345139

申请日：2012-03-23

Applicant: Gang Wang ,  Lei Jiang ,  Ming Lei

Inventor： Gang Wang ,  Lei Jiang ,  Ming Lei

IPC: H04W72/12 ,  H04W72/08 ,  H04W52/36 ,  H04L1/00 ,  H04L5/00

CPC classification number: H04W72/1231 ,  H04L1/0003 ,  H04L1/0015 ,  H04L5/0057 ,  H04W52/367 ,  H04W72/08

Abstract: Embodiments of the disclosure provide a method and apparatus for scheduling a UE, wherein a BS serves the UE and employs a non-normal subframe to coordinate inter-cell interference, and wherein transmission power in the non-normal subframe is lower than that in a normal subframe. In the method according to embodiments of the present invention, channel quality information for the non-normal subframe may be adjusted based on information on transmission power of downlink packets and reference signals; and a target MCS may be determined according to the adjusted channel quality information, so that the BS schedules the UE based on the target MCS in the non-normal subframe.

Abstract translation: 本公开的实施例提供了一种用于调度UE的方法和装置，其中BS服务于UE并采用非正常子帧来协调小区间干扰，并且其中非正常子帧中的发射功率低于 正常子帧 在根据本发明的实施例的方法中，可以基于关于下行链路分组和参考信号的发送功率的信息来调整用于非正常子帧的信道质量信息; 并且可以根据所调整的信道质量信息来确定目标MCS，使得BS基于非正常子帧中的目标MCS来调度UE。

公开(公告)号：US20160366696A1

公开(公告)日：2016-12-15

申请号：US14654615

申请日：2015-06-09

Applicant: Telefonaktiebolaget L M Ericsson (publ)

Inventor： Mats ÅHLANDER ,  Mikael JONSSON ,  Stéphane TESSIER ,  Jianwei ZHANG

IPC: H04W72/12 ,  H04J11/00 ,  H04B7/06

CPC classification number: H04W72/1231 ,  H04B7/0626 ,  H04B7/0632 ,  H04B7/0639 ,  H04B17/336 ,  H04B17/373 ,  H04B17/382 ,  H04J11/0023 ,  H04L1/0015 ,  H04L1/0026 ,  H04L1/1887 ,  H04L1/20 ,  H04W72/1273

Abstract: A base station that implements an improved link adaptation process that takes into account the fact that a certain reference signal (e.g., CSI-RS) may be seen as interference by certain wireless communication devices (WCDs). Accordingly, when the base station schedules a data transmission for the WCD to occur in a particular TTI and the base station is scheduled to transmit the CSI-RS during the same TTI, the base station will tend to select a more robust MCS for the data transmission to the WCD to counter effect the possible interference caused by the CSI-RS.

Abstract translation: 实现改进的链路自适应过程的基站，其考虑到某些参考信号（例如，CSI-RS）可被视为某些无线通信设备（WCD）的干扰的事实。 因此，当基站调度在特定TTI中出现的用于WCD的数据传输，并且基站被调度为在相同TTI期间发送CSI-RS时，基站将倾向于为该数据选择更稳健的MCS 传输到WCD以对抗CSI-RS引起的可能干扰。

公开(公告)号：US09521579B1

公开(公告)日：2016-12-13

申请号：US13783277

申请日：2013-03-02

Applicant: Sriram Mudulodu

Inventor： Sriram Mudulodu

IPC: H04W28/04 ,  H04W72/04 ,  H04L27/00

CPC classification number: H04W74/085 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0015 ,  H04L1/1867 ,  H04L27/00 ,  H04L27/0008 ,  H04W72/0446

Abstract: A method for selection of a particular modulation coding selection (MCS) from a plurality of available MCS selects a particular MCS after obtaining SNR_d, SNR_high, SNR_low, and if SNR_d>SNR_high, selecting the highest available MCS, and if SNR_d SNR_d>SNR_low, selecting MCS based on computing the function/table for each MCS according to the formula: f(MCS)=(1−PER(length_packet,MCS,SNR_d))/length_packet(packet_size,MCS), and thereafter selecting the MCS that maximizes the f(MCS) function. Further the neighboring MCS values are characterized for throughput in a throughput characterization step, and compared in throughput to the above determined throughput. In an embodiment of the invention, SNR_high, SNR_low are found by finding the SNR that satisfies: PER(length_packet,MCS_lowest,SNR_low)=PER_thresh PER(length_packet,MCS_highest,SNR_high)=PER_thresh Where PER_thresh is a design parameter, and MCS_lowest is the lowest MCS and MCS_highest is the highest available MCS.

公开(公告)号：US20160353374A1

公开(公告)日：2016-12-01

申请号：US14722372

申请日：2015-05-27

Applicant: Telefonaktiebolaget L M Ericsson (publ)

Inventor： Andreas Höglund ,  Jonas Kronander ,  Hugo Tullberg

IPC: H04W52/02 ,  H04L1/00 ,  H04W72/04 ,  H04W4/00

CPC classification number: H04W52/0209 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0015 ,  H04L5/0064 ,  H04W4/70 ,  H04W72/0406 ,  H04W88/08 ,  Y02D70/1262 ,  Y02D70/21

Abstract: Systems and methods are disclosed herein for reducing power consumption and/or decreasing latency for a wireless device in a wireless communications system. In particular, the systems and methods disclosed herein are particularly beneficial for Machine Type Communication (MTC) devices, but are not limited thereto. In some embodiments, a method of operation of a node of a wireless communications system comprises determining a Modulation and Coding Scheme (MCS) that is optimized for MTC for one of an uplink from a MTC device to a base station and a downlink from the base station to the MTC device, and using the MCS with respect to the one of the uplink from the MTC device to the base station and the downlink from the base station to the MTC device. By optimizing the MCS, power consumption by the MTC device and/or latency can be reduced.

Abstract translation: 本文公开的系统和方法用于在无线通信系统中降低功率消耗和/或降低无线设备的等待时间。 特别地，本文公开的系统和方法对于机器类型通信（MTC）设备特别有利，但不限于此。 在一些实施例中，无线通信系统的节点的操作方法包括确定针对从MTC设备到基站的上行链路中的一个优化的MTC的优化的调制和编码方案（MCS），以及从基站 并且使用关于从MTC设备到基站的上行链路之一的MCS以及从基站到MTC设备的下行链路。 通过优化MCS，可以减少MTC设备的功耗和/或等待时间。

公开(公告)号：US20160338068A1

公开(公告)日：2016-11-17

申请号：US15152771

申请日：2016-05-12

Applicant: MEDIATEK INC.

Inventor： Ming-Yuan Cheng ,  Yih-Shen Chen ,  Chie-Ming Chou ,  Pavan Santhana Krishna Nuggehalli ,  Chia-Chun Hsu

IPC: H04W72/04 ,  H04W24/10 ,  H04W72/08

CPC classification number: H04W28/22 ,  H04L1/0002 ,  H04L1/0015 ,  H04L1/0025 ,  H04L1/0026 ,  H04L47/14 ,  H04W28/0236 ,  H04W28/08 ,  H04W88/06

Abstract: LWA (LTE/WLAN Aggregation) is a tight integration at radio level which allows for real-time channel and load aware radio resource management across WLAN and LTE to provide significant user perceived throughput (UPT) improvement. When enabling LWA, packets are routed to a base station (eNB) for performing PDCP functionalities as an LTE PDU. Afterwards, the eNB can dispatch the PDU either delivered over LTE link or WLAN link. The UPT improvement depends on how the eNB dispatches the PDU over LTE link or WLAN link. In one novel aspect, the eNB can acquire channel information, load information, and throughput estimation regarding with WLAN link and LTE link. As a result, the eNB can optimize UPT and LWA PDU dispatching algorithm.

Abstract translation: LWA（LTE / WLAN聚合）是无线电级别的紧密集成，其允许跨WLAN和LTE的实时信道和负载感知无线电资源管理，以提供显着的用户感知吞吐量（UPT）改进。 当启用LWA时，分组被路由到用于执行作为LTE PDU的PDCP功能的基站（eNB）。 之后，eNB可以通过LTE链路或WLAN链路发送PDU。 UPT的改进取决于eNB如何通过LTE链路或WLAN链路分派PDU。 在一个新颖的方面，eNB可以获取关于WLAN链路和LTE链路的信道信息，负载信息和吞吐量估计。 因此，eNB可以优化UPT和LWA PDU调度算法。

公开(公告)号：US09484958B2

公开(公告)日：2016-11-01

申请号：US14950127

申请日：2015-11-24

Applicant: AT&T INTELLECTUAL PROPERTY I, LP

Inventor： Thomas J. J. Starr

IPC: H03M13/00 ,  H03M13/27 ,  H04L1/00 ,  H04L1/20 ,  G06F21/56 ,  H03M13/35

CPC classification number: H03M13/2792 ,  G06F21/56 ,  H03M13/2789 ,  H03M13/353 ,  H03M13/6508 ,  H04L1/0001 ,  H04L1/0003 ,  H04L1/0015 ,  H04L1/0021 ,  H04L1/0025 ,  H04L1/0026 ,  H04L1/0045 ,  H04L1/0071 ,  H04L1/0075 ,  H04L1/20

Abstract: Systems and Methods for controlling an interleaver are disclosed. Generally, a first and second signal are received, wherein the first and second signals are selected from the group consisting of a signal to noise ration signal, a data rate signal, and a bit error rate signal. An interleaver control signal is then generated based on the first and second signals.

公开(公告)号：US20160269047A1

公开(公告)日：2016-09-15

申请号：US14942265

申请日：2015-11-16

Applicant: QUALCOMM Incorporated

Inventor： Jing Jiang ,  Tingfang Ji ,  Joseph Binamira Soriaga ,  Peter Gaal ,  Alexei Yurievitch Gorokhov ,  Kambiz Azarian Yazdi ,  John Edward Smee

IPC: H03M13/17 ,  H03M13/00 ,  H03M13/27

CPC classification number: H03M13/27 ,  H03M13/1102 ,  H03M13/2957 ,  H03M13/353 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0015 ,  H04L1/0023 ,  H04L1/0071

Abstract: Bursty interference or puncturing may be identified, either by a user equipment (UE) or by a base station. In response, a protection scheme may be applied to protect communications from the bursty interference or puncturing. The protection scheme may include using both time and frequency interleaving of code blocks in the communications. The protection scheme may also include modifying the modulation and coding scheme (MCS), coding rate, precoding matrix index (PMI), or rank indicator (RI) used in the communications. The protection scheme may also include using a universal low-density parity check (LDPC) code in the transmission of the communications.

Abstract translation: 可以由用户设备（UE）或基站识别突发干扰或穿孔。 作为响应，可以应用保护方案来保护通信免受突发干扰或穿孔。 保护方案可以包括在通信中使用代码块的时间和频率交错。 保护方案还可以包括修改在通信中使用的调制和编码方案（MCS），编码率，预编码矩阵索引（PMI）或秩指示符（RI）。 保护方案还可以包括在通信的传输中使用通用低密度奇偶校验（LDPC）码。

公开(公告)号：US20160248487A1

公开(公告)日：2016-08-25

申请号：US15137098

申请日：2016-04-25

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Yanmeng Sun

IPC: H04B7/04 ,  H04L1/00 ,  H04B1/04

CPC classification number: H04B7/0417 ,  H04B1/04 ,  H04L1/0001 ,  H04L1/0015 ,  H04L1/0017 ,  H04L1/0026 ,  H04L1/0028 ,  H04L1/0041 ,  H04L1/0045 ,  H04L1/0656 ,  H04L1/0687

Abstract: A MIMO ARC transmitter derives demux streams (15, 20) carrying different parts of the information, at given data rates, processes each demux stream by coding and modulation (25, 30) before transmission over the channels, and varies (50, 165) the coding or modulation according to channel conditions, and controls the data rates (50, 155) according to conditions of the channels independently of the variations in coding and modulation. The separate control of processing and of data rates for each demux stream can provide a better balance of rapid response to changing conditions and efficiency in less rapidly changing conditions. The frequency of updating the processing can be limited since these take more time to adapt in the receiver. Sensitivity to rapid changes can be achieved by the data rate changes since these involve less overhead than changes in the processing.