公开(公告)号：US20160128072A1

公开(公告)日：2016-05-05

申请号：US14823823

申请日：2015-08-11

Applicant: Samsung Electronics Co., Ltd.

Inventor： Sridhar Rajagopal ,  Rakesh Taori ,  Sudhir Ramakrishna ,  Jaspreet Singh ,  Shadi Abu-Surra

IPC: H04W72/08 ,  H04L5/00 ,  H04W72/04

CPC classification number: H04L5/0007 ,  H04L5/001 ,  H04L5/0091 ,  H04L27/2602 ,  H04W72/048

Abstract: A user equipment, apparatus, and method are provided for wireless communication using an IG-OFDM structure. An apparatus is configured to transmit a known reference signal. The apparatus is configured to receive, in response to the reference signal and from at least one user equipment (UE), capability information that includes at least one of the sub-band bandwidth or number of independently decodable sub-bands that can be dynamically turned on or off by the at least one UE. The apparatus is configured to define an interleaved guard OFDM (IG-OFDM) structure according to the received capability information, the IG-OFDM structure including guard tones distributed within an OFDM symbol where there is no signal transmission on these guard tones. The apparatus is configured to communicate with the at least one UE using a transmitted waveform that is shaped according to the IG-OFDM structure.

Abstract translation: 提供了一种用于使用IG-OFDM结构的无线通信的用户设备，装置和方法。 一种装置被配置为发送已知的参考信号。 该装置被配置为响应于参考信号并且从至少一个用户设备（UE）接收包括可以动态地转换的子带宽或独立可解码子带中的至少一个的能力信息 由所述至少一个UE开启或关闭。 该装置被配置为根据接收到的能力信息来定义交织的保护OFDM（IG-OFDM）结构，该IG-OFDM结构包括分布在OFDM符号内的保护音调，其中在这些保护音调上没有信号传输。 该装置被配置为使用根据IG-OFDM结构成形的发送波形与至少一个UE进行通信。

公开(公告)号：US20160119043A1

公开(公告)日：2016-04-28

申请号：US14599357

申请日：2015-01-16

Applicant: Samsung Electronics Co., Ltd.

Inventor： Sridhar Rajagopal ,  Rakesh Taori

IPC: H04B7/04

CPC classification number: H04B7/063 ,  H04B7/0408 ,  H04B7/0452 ,  H04B7/0617 ,  H04B7/0695 ,  H04B7/086 ,  H04B7/088

Abstract: A method of providing multiple station beam refinement in a mmWave wireless network comprising an access point (AP) and a plurality of stations (STAs) is provided. The method includes providing an AP configured to selectively transmit wireless signals to a plurality of directional sectors and to selectively receive wireless signals from the plurality of directional sectors. The method further includes operating the AP to at least one of provide simultaneous transmit beam refinement for the plurality of STAs, provide simultaneous receive beam refinement for the plurality of STAs, receive simultaneous transmit beam refinement from the plurality of STAs, and receive simultaneous receive beam refinement from the plurality of STAs.

Abstract translation: 提供了一种在包括接入点（AP）和多个站（STA）的mmWave无线网络中提供多站波束精化的方法。 该方法包括提供被配置为选择性地将无线信号发送到多个定向扇区并且有选择地从多个定向扇区接收无线信号的AP。 所述方法还包括将所述AP操作为为所述多个STA提供同时发射波束细化的至少一个，为所述多个STA提供同时的接收波束细化，从所述多个STA接收同时发射波束细化，以及接收同时接收波束 从多个STA进行细化。

公开(公告)号：US20160020933A1

公开(公告)日：2016-01-21

申请号：US14675190

申请日：2015-03-31

Applicant: Samsung Electronics Co., Ltd.

Inventor： Sridhar Rajagopal ,  Shadi Abu-Surra

IPC: H04L27/26 ,  H04W72/04

CPC classification number: H04L27/0006

Abstract: A user equipment, apparatus, and method are provided for wireless communication with at least one base station. The user equipment includes a transceiver configured to communicate with the at least one base station by transmitting radio frequency signals to the at least one base station and by receiving radio frequency signals from the at least one base station. The user equipment also includes processing circuitry. The processing circuitry is configured to identify an occupied signal bandwidth of the radio frequency signals. The processing circuitry is also configured to identify a spectral mask for the occupied signal bandwidth. The processing circuitry is also configured to identify an unused available spectrum between the occupied signal bandwidth and the spectral mask. The processing circuitry is also configured to modulate a spectral mask filling (SMF) signal in the unused available spectrum, the SMF signal configured to reduce the peak-to-average power ratio of the radio frequency signals.

Abstract translation: 提供了一种用于与至少一个基站进行无线通信的用户设备，装置和方法。 用户设备包括收发器，其被配置为通过向至少一个基站发射射频信号并且通过从所述至少一个基站接收射频信号来与所述至少一个基站进行通信。 用户设备还包括处理电路。 处理电路被配置为识别射频信号的占用信号带宽。 处理电路还被配置为识别占用的信号带宽的频谱掩模。 处理电路还被配置为识别占用的信号带宽和频谱掩模之间的未使用的可用频谱。 处理电路还被配置为调制未使用的可用频谱中的频谱掩模填充（SMF）信号，SMF信号被配置为降低射频信号的峰值与平均功率比。

公开(公告)号：US09237475B2

公开(公告)日：2016-01-12

申请号：US13781311

申请日：2013-02-28

Applicant: Samsung Electronics Co., Ltd.

Inventor： Kaushik Morapakkam Josiam ,  Ankit Gupta ,  Shadi Abu-Surra ,  Zhouyue Pi ,  Ying Li ,  Sridhar Rajagopal

IPC: H04W24/10 ,  H04W72/04

CPC classification number: H04W24/10 ,  H04B7/0695 ,  H04L5/0023 ,  H04L5/0057 ,  H04W72/046

Abstract: A method and apparatus report or identify channel quality information. The method for reporting includes selecting one or more beams for channel quality reporting. The method also includes mapping, by the UE, indices of the one or more selected beams to one or more channel quality values. Additionally, the method includes sending channel quality information for the one or more selected beams according to the mapping. The method for identifying includes receiving an indication of indices of one or more beams selected for reporting. The method also includes receiving channel quality information for the one or more selected beams. The method further includes identifying a mapping of the indices of the one or more selected beams to one or more channel quality values. Additionally, the method includes identifying a channel quality value for each of the one or more selected beams according to the mapping.

Abstract translation: 方法和装置报告或识别信道质量信息。 报告的方法包括选择一个或多个波束用于信道质量报告。 该方法还包括由UE将一个或多个所选波束的索引映射到一个或多个信道质量值。 此外，该方法包括根据映射发送针对一个或多个所选波束的信道质量信息。 所述识别方法包括接收为报告而选择的一个或多个波束的索引的指示。 该方法还包括接收一个或多个所选波束的信道质量信息。 该方法还包括识别一个或多个所选波束的索引与一个或多个信道质量值的映射。 另外，该方法包括根据映射来识别一个或多个所选波束中的每一个的信道质量值。

公开(公告)号：US20150282068A1

公开(公告)日：2015-10-01

申请号：US14579740

申请日：2014-12-22

Applicant: Samsung Electronics Co., Ltd.

Inventor： Sridhar Rajagopal ,  Shadi Abu-Surra ,  Eran Pisek

IPC: H04W52/02 ,  H04W56/00 ,  H04W28/20

CPC classification number: H04W52/0206 ,  H04L5/0012 ,  H04L5/0048 ,  H04L5/0064 ,  H04L27/2613 ,  H04L27/2655 ,  H04L27/2666 ,  H04L27/2675 ,  H04L27/2689 ,  H04L27/2692 ,  H04W52/0209 ,  H04W56/00 ,  H04W84/12 ,  Y02D70/00 ,  Y02D70/142

Abstract: In a packet-based communication system, a transmitter and a receiver implement low power synchronization techniques. The transmitter transmits a packet that includes a two-part preamble. A first part of the two-part preamble is transmitted at a first reduced bandwidth that is smaller than a second bandwidth of the channel, and at least one of a second part of the two-part preamble and another portion of the packet is transmitted at the second bandwidth of the channel. The receiver includes an interleaved analog-to-digital converter (ADC) including multiple sub-ADCs. The receiver turns on a first subset of the multiple sub-ADCs during an idle listening period, and turns on a second subset of the multiple sub-ADCs upon detection of a completion of the first part of the two-part preamble, wherein the first subset of the multiple sub-ADCs is less than the second subset of the multiple sub-ADCs.

Abstract translation: 在基于分组的通信系统中，发射机和接收机实现低功率同步技术。 发射机发送包括两部分前同步码的分组。 两部分前导码的第一部分以小于该信道的第二带宽的第一减小带宽发送，并且该两部分前导码的第二部分和分组的另一部分中的至少一个以 频道的第二个带宽。 该接收机包括一个包括多个子ADC的交错模数转换器（ADC）。 接收机在空闲监听期间接通多个子ADC的第一子集，并且在检测到两部分前导码的第一部分的完成时，打开多个子ADC的第二子集，其中第一个 多个子ADC的子集小于多个子ADC的第二子集。

公开(公告)号：US20130315321A1

公开(公告)日：2013-11-28

申请号：US13856797

申请日：2013-04-04

Applicant: Samsung Electronics Co., Ltd.

Inventor： Sridhar Rajagopal ,  Shadi Abu-Surra ,  Ankit Gupta ,  Sudhir Ramakrishna ,  Kaushik Josiam ,  Zhouyue Pi ,  Ying Li

IPC: H04L27/26

CPC classification number: H04L27/2607 ,  H04B7/0695 ,  H04J13/0062 ,  H04L1/0031 ,  H04L27/261

Abstract: To reduce the duration of a cyclic prefix used for a multiple input, multiple output (MIMO) communications channel, delay spread variations for different transmit/receive beam pair combination is estimated and used for fast beam switching and to support single user MIMO (SU-MIMO) even when the CP difference between two beams is large. Beam switching reference signals are employed to estimate delay spread exceeding current CP, and to support beam switching. CP covering sub-clusters within clusters for the MIMO channel are exploited to reduce the CP requirement and improve efficiency. Any one of a number of different CP durations may be selected for each different mobile station, using one of a finite set of subframe configurations for which the CP durations of different symbol locations within the subframe are predefined. Dynamically switching subframe configurations by the system accommodates high mobility.

Abstract translation: 为了减少用于多输入的循环前缀的持续时间，多输出（MIMO）通信信道，用于不同发射/接收波束对组合的延迟扩展变化被估计并用于快速波束切换并且支持单用户MIMO（SU- MIMO），即使两个波束之间的CP差异较大。 采用光束切换参考信号来估计超过当前CP的延迟扩展，并支持波束切换。 覆盖用于MIMO信道的群集内的子簇的CP被利用以减少CP需求并提高效率。 可以使用预定义子帧内不同符号位置的CP持续时间的子帧配置的有限集合之一来为每个不同移动台选择多个不同CP持续时间中的任何一个。 通过系统动态切换子帧配置可以实现高移动性。

公开(公告)号：US20130223845A1

公开(公告)日：2013-08-29

申请号：US13765285

申请日：2013-02-12

Applicant: Samsung Electronics Co., Ltd.

Inventor： Sridhar Rajagopal ,  Eun Tae Won ,  Ying Li

IPC: H04B10/116

CPC classification number: H04B10/116 ,  H04B10/1125 ,  H04B10/1149 ,  H04L7/041 ,  H04L7/046

Abstract: For use in visible light communication (VLC), synchronization with multiple topology support while transmitting an extended preamble includes transmitting a two-part preamble sequence. The preamble sequence includes one or more repetitions of a fast locking pattern (FLP) configured to be used clock synchronization, and one or more repetitions of a topology dependent pattern (TDP) configured to be used to distinguish a plurality of VLC topologies. The method for transmitting an extended preamble includes generating an extended preamble and transmitting the extended preamble during a receive or idle mode for maintaining visibility support and for better synchronization performance.

Abstract translation: 为了在可见光通信（VLC）中使用，在发送扩展前同步码时与多个拓扑支持同步包括发送两部分的前导码序列。 前导序列包括配置为使用时钟同步的快速锁定模式（FLP）的一个或多个重复，以及被配置为用于区分多个VLC拓扑的拓扑依赖模式（TDP）的一个或多个重复。 用于发送扩展前同步码的方法包括在接收或空闲模式期间生成扩展前导码并发送扩展前同步码，以便维持可视性支持和更好的同步性能。

公开(公告)号：US20130156120A1

公开(公告)日：2013-06-20

申请号：US13678795

申请日：2012-11-16

Applicant: Samsung Electronics Co., Ltd.

Inventor： Kaushik Josiam ,  Shadi Abu-Surra ,  Ying Li ,  Sridhar Rajagopal ,  Zhouyue Pi

IPC: H04B7/06

CPC classification number: H04B7/0697 ,  H04B7/0617 ,  H04L5/0023 ,  H04L5/0048 ,  H04L25/0204 ,  H04L25/0224

Abstract: A base station is capable of communicating with a plurality of subscriber stations using a beamforming scheme that varies beams over different time instances. The base station includes a plurality of antenna arrays configured to transmit N spatial beams and carry a reference symbols corresponding to specific spatial beams. The base station also includes NRF number of radio frequency (RF) processing chains coupled to respective ones of the plurality of antenna arrays, wherein N>>NRF. The subscriber station includes MRF processing receive paths configured to receive M number of beams from the base station.

Abstract translation: 基站能够使用在不同时间实例上改变波束的波束成形方案与多个用户台进行通信。 基站包括多个天线阵列，其被配置为发送N个空间波束并携带对应于特定空间波束的参考符号。 基站还包括耦合到多个天线阵列中的相应天线阵列的NRF数量的射频（RF）处理链，其中N >> NRF。 用户站包括被配置为从基站接收M个波束的MRF处理接收路径。

公开(公告)号：US20130142136A1

公开(公告)日：2013-06-06

申请号：US13652303

申请日：2012-10-15

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Zhouyue Pi ,  Farooq Khan ,  Ying Li ,  Shadi Abu-Surra ,  Sridhar Rajagopal

IPC: H04W28/02

CPC classification number: H04W28/0289 ,  H04B7/15507 ,  H04B7/1555

Abstract: A communication network includes a base station configured to wirelessly communicate first communication traffic with a first network entity using a first beam, and communicate second communication traffic with a second network entity using a second beam. Each of the first and second communication traffic includes at least one of backhaul traffic, wireless access traffic, and traffic for coordination in-between network entities.

Abstract translation: 通信网络包括被配置为使用第一波束将第一通信业务与第一网络实体进行无线通信的基站，并且使用第二波束将第二通信业务与第二网络实体进行通信。 第一和第二通信业务中的每一个包括回程业务，无线接入业务和用于在网络实体之间进行协调的流量中的至少一个。