公开(公告)号：US09306667B2

公开(公告)日：2016-04-05

申请号：US14185836

申请日：2014-02-20

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar Jovicic ,  Thomas Joseph Richardson ,  Junyi Li

IPC: H04B10/116 ,  H04L7/00

CPC classification number: H04B10/116 ,  H04L7/0075

Abstract: A method, an apparatus, and a computer program product for communication are provided. The apparatus obtains a message for communication using visible light communication (VLC) through a light emitting diode (LED) luminary device and formats the message using a synchronization signal followed by one or more data signals. The synchronization signal and/or the one or more data signals are modulated using a Frequency Shift Keying (FSK) modulation scheme. The apparatus further receives a dimming level value associated with a brightness of light to be emitted from the LED luminary device, generates a waveform with frequencies based on the formatted message and a duty cycle for the LED luminary device based on the dimming level value, and sends the generated waveform to the LED luminary device for communication using VLC.

Abstract translation: 提供了一种用于通信的方法，装置和计算机程序产品。 该装置通过发光二极管（LED）照明装置获得用于使用可见光通信（VLC）的通信的消息，并且使用同步信号格式化消息，随后是一个或多个数据信号。 使用频移键控（FSK）调制方案来调制同步信号和/或一个或多个数据信号。 该装置还接收与LED发光装置发射的光的亮度相关联的调光电平值，基于调光电平值生成基于格式化消息的频率的波形和LED发光装置的占空比，以及 将生成的波形发送到LED发光装置，以使用VLC进行通信。

公开(公告)号：US09247453B2

公开(公告)日：2016-01-26

申请号：US14311627

申请日：2014-06-23

Applicant: QUALCOMM Incorporated

Inventor： Shailesh Patil ,  Hua Wang ,  Xinzhou Wu ,  Junyi Li ,  Thomas Joseph Richardson

IPC: H04W4/00 ,  H04W28/04 ,  H04W76/02

CPC classification number: H04W28/046 ,  H04W4/70 ,  H04W74/085 ,  H04W74/0858 ,  H04W76/11 ,  H04W76/14

Abstract: Various methods and apparatus are directed to collision detection and/or avoidance regarding peer to peer connection identifiers. A wireless communications device broadcasts a signal indicating its acquired connection identifier in one of two alternative blocks. A base station monitors peer to peer signaling in its coverage area and tracks the usage of peer to peer connection identifiers by pairs of devices. The base station detects when multiple pairs of devices are using the same peer to peer connection identifier. The base station provides assistance to the peer to peer network to avoid a collision or facilitate rapid collision detection by the peer to peer devices. In one approach the base station sends an instruction for a connection to switch its connection identifier. In another approach the base station sends a connection a message to bias its selection as to which of the two alternative blocks to use for transmission.

Abstract translation: 各种方法和装置针对关于对等连接标识符的冲突检测和/或避免。 无线通信设备在两个替代块之一中广播指示其获取的连接标识符的信号。 基站监视其覆盖区域中的对等信令，并通过成对的设备跟踪对等连接标识符的使用。 基站检测多对设备何时使用相同的对等连接标识符。 基站向对等网络提供协助以避免冲突或促进对等设备的快速冲突检测。 在一种方法中，基站发送用于连接的指令来切换其连接标识符。 在另一种方法中，基站向连接发送消息以偏移其对于要用于传输的两个替代块中的哪一个的选择。

公开(公告)号：US09166764B2

公开(公告)日：2015-10-20

申请号：US13653295

申请日：2012-10-16

Applicant: QUALCOMM Incorporated

Inventor： Jubin Jose ,  Sundar Subramanian ,  Xinzhou Wu ,  Junyi Li ,  Thomas Joseph Richardson

IPC: H04L5/00

CPC classification number: H04L5/0073 ,  H04L5/0023 ,  H04L5/0048 ,  H04L5/0057 ,  H04L27/2613

Abstract: A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus may be a UE. The UE receives pilot signals from a serving base station and at least one interfering base station. The UE determines phase rotations used by the serving base station and the at least one interfering base station for transmitting resource blocks. The UE determines channel feedback based on the received pilots signals and the determined phase rotations for each of the serving base station and the at least one interfering base station. The UE sends the channel feedback to the serving base station. The UE receives data based on the determined phase rotations.

Abstract translation: 提供了一种用于无线通信的方法，装置和计算机程序产品。 该装置可以是UE。 UE从服务基站和至少一个干扰基站接收导频信号。 UE确定由服务基站和至少一个干扰基站用于发送资源块的相位旋转。 UE基于接收到的导频信号和针对服务基站和至少一个干扰基站中的每一个确定的相位旋转来确定信道反馈。 UE向服务基站发送信道反馈。 UE基于确定的相位旋转接收数据。

公开(公告)号：US09166683B2

公开(公告)日：2015-10-20

申请号：US13767681

申请日：2013-02-14

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar Jovicic ,  Junyi Li ,  Thomas Joseph Richardson

IPC: H04B10/08 ,  H04B17/00 ,  H04B10/00 ,  H04B10/11 ,  H04B10/114 ,  H04B10/116

CPC classification number: H04B10/116 ,  H04B3/46 ,  H04B3/542 ,  H04B10/07953 ,  H04B10/11 ,  H04B10/1143 ,  H04B10/1149 ,  H04B10/502 ,  H04B10/516 ,  H04B10/564 ,  H04L5/0057 ,  H04L12/66

Abstract: A hybrid communications system implements different communication technologies to communicate data and information for particular communications directions in different portions of the system. Power line communications (PLC) signaling is used to deliver data and information from a gateway device to a light access point. Visible light communications (VLC) signaling is used to communicate data and information from the light access point to a user equipment (UE) device. Wireless radio signaling, wireless infrared (IR) signaling, or a combination of wireless IR signaling and PLC signaling is used to communicate data/information from the UE device to the gateway device. To efficiently control the VLC communications channel between the light access point and UE device, the UE device measures the VLC channel, e.g., calculating SNRs on a per VLC tone basis, and communicating VLC channel quality feedback information to the gateway device, which is forwarded to the light access point.

Abstract translation: 混合通信系统实现不同的通信技术以在系统的不同部分中传送特定通信方向的数据和信息。 电力线通信（PLC）信令用于将数据和信息从网关设备传送到光接入点。 可见光通信（VLC）信令用于将来自光接入点的数据和信息传送到用户设备（UE）设备。 使用无线无线电信令，无线红外（IR）信令或无线IR信令和PLC信令的组合来将数据/信息从UE设备传送到网关设备。 为了有效地控制光接入点和UE设备之间的VLC通信信道，UE设备测量VLC信道，例如，以VLC音调为基础计算SNR，以及向转发的网关设备传送VLC信道质量反馈信息 到光接入点。

公开(公告)号：US20140229789A1

公开(公告)日：2014-08-14

申请号：US14179942

申请日：2014-02-13

Applicant: QUALCOMM Incorporated

Inventor： Thomas Joseph Richardson

IPC: H03M13/11

CPC classification number: H03M13/1105 ,  H03M13/036 ,  H03M13/1137 ,  H03M13/116 ,  H03M13/1168 ,  H03M13/118 ,  H03M13/1185 ,  H03M13/1188 ,  H03M13/611 ,  H03M13/6362

Abstract: A method of data encoding is disclosed. An encoder receives a set of information bits and performs an LDPC encoding operation on the set of information bits to produce a codeword based on a matched lifted LDPC code. The matched lifted LDPC code is based on a commutative lifting group and includes a number of parity bits and a submatrix to determine values of the parity bits. An order of the lifting group (Z) corresponds with a size of the lifting. A determinant of the submatrix is a polynomial of the form: ga+(g0+gL)P, where g0 is the identity element of the group, g0=gL2k, and P is an arbitrary non-zero element of a binary group ring associated to the lifting group.

Abstract translation: 公开了一种数据编码方法。 编码器接收一组信息比特，并对该组信息比特执行LDPC编码操作，以产生基于匹配的提升LDPC码的码字。 匹配的提升LDPC码基于可交换提升组，并且包括多个奇偶校验位和子矩阵以确定奇偶校验位的值。 提升组（Z）的顺序对应于提升的大小。 子矩阵的行列式是以下形式的多项式：ga +（g0 + gL）P，其中g0是组的标识元素，g0 = gL2k，P是与二进制组环相关联的任意非零元素 起重组。

公开(公告)号：US20140226977A1

公开(公告)日：2014-08-14

申请号：US13767681

申请日：2013-02-14

Applicant: QUALCOMM INCORPORATED

Inventor： Aleksandar Jovicic ,  Junyi Li ,  Thomas Joseph Richardson

IPC: H04B10/11

CPC classification number: H04B10/116 ,  H04B3/46 ,  H04B3/542 ,  H04B10/07953 ,  H04B10/11 ,  H04B10/1143 ,  H04B10/1149 ,  H04B10/502 ,  H04B10/516 ,  H04B10/564 ,  H04L5/0057 ,  H04L12/66

Abstract: A hybrid communications system implements different communication technologies to communicate data and information for particular communications directions in different portions of the system. Power line communications (PLC) signaling is used to deliver data and information from a gateway device to a light access point. Visible light communications (VLC) signaling is used to communicate data and information from the light access point to a user equipment (UE) device. Wireless radio signaling, wireless infrared (IR) signaling, or a combination of wireless IR signaling and PLC signaling is used to communicate data/information from the UE device to the gateway device. To efficiently control the VLC communications channel between the light access point and UE device, the UE device measures the VLC channel, e.g., calculating SNRs on a per VLC tone basis, and communicating VLC channel quality feedback information to the gateway device, which is forwarded to the light access point.

Abstract translation: 混合通信系统实现不同的通信技术以在系统的不同部分中传送特定通信方向的数据和信息。 电力线通信（PLC）信令用于将数据和信息从网关设备传送到光接入点。 可见光通信（VLC）信令用于将来自光接入点的数据和信息传送到用户设备（UE）设备。 使用无线无线电信令，无线红外（IR）信令或无线IR信令和PLC信令的组合来将数据/信息从UE设备传送到网关设备。 为了有效地控制光接入点和UE设备之间的VLC通信信道，UE设备测量VLC信道，例如，以VLC音调为基础计算SNR，以及向转发的网关设备传送VLC信道质量反馈信息 到光接入点。

公开(公告)号：US20140153923A1

公开(公告)日：2014-06-05

申请号：US13691753

申请日：2012-12-01

Applicant: QUALCOMM INCORPORATED

Inventor： Lorenzo Casaccia ,  Junyi Li ,  Thomas Joseph Richardson ,  Aleksandar Jovicic

IPC: H04B10/11

CPC classification number: H04B10/11 ,  H04B10/1149 ,  H04B10/116

Abstract: Various exemplary methods and apparatus are directed to using Visible Light Communication (VLC) in a downlink, e.g., a supplemental downlink, in combination with a wireless radio downlink/ uplink pair. A gateway is coupled, via a wireline link, to a VLC access point. In some embodiments, the gateway includes a wireless radio base station. A user equipment device detects a visible light signal from the VLC access point, and transmits a radio signal to a communications device, e.g., a gateway including a base station or a macro base station, indicating that the UE device is in a VLC coverage area. The gateway configures the VLC access point to serve as a supplemental wireless cell which supports downlink communications. The gateway sends traffic signals to the VLC access point, via the wireline, which are converted by the VLC access point into VLC signals which are transmitted. The UE device receives VLC downlink traffic signals and transmits a corresponding acknowledgment signal via an uplink radio channel.

Abstract translation: 各种示例性方法和装置涉及在下行链路（例如，补充下行链路）中结合无线无线电下行链路/上行链路使用可见光通信（VLC）。 网关通过有线链路耦合到VLC接入点。 在一些实施例中，网关包括无线无线电基站。 用户设备设备检测来自VLC接入点的可见光信号，并将无线电信号发送到通信设备，例如包括基站或宏基站的网关，指示UE设备在VLC覆盖区域 。 网关将VLC接入点配置为支持下行链路通信的补充无线小区。 网关通过有线线路向VLC接入点发送业务信号，该线路由VLC接入点转换为发送的VLC信号。 UE设备接收VLC下行业务信号，经由上行链路无线信道发送对应的确认信号。

公开(公告)号：US12191884B2

公开(公告)日：2025-01-07

申请号：US18189865

申请日：2023-03-24

Applicant: QUALCOMM Incorporated

Inventor： Thomas Joseph Richardson ,  Kanke Wu ,  Bin Tian ,  Didier Johannes Richard Van Nee

IPC: H03M13/11 ,  H03M13/00 ,  H04L1/00

Abstract: This disclosure provides methods, components, devices and systems for low-density parity check (LDPC) coding. Some aspects more specifically relate to extending LDPC codewords to produce longer codewords. In some examples, a first wireless device may generate a baseline LDPC code by performing a first lifting on a base matrix, which may produce an LDPC code used for a current Wi-Fi implementation. The first wireless device may then perform a second lifting or a re-lifting (such as a cyclic lifting, a product lifting, a swapping lifting, or a combination thereof) to generate an extended lifted code. This extended lifted code may be an extension of the first LDPC code such that the first LDPC code may be preserved as part of the extended code. Then first wireless device may then transmit the extended LDPC code as an extended or lifted codeword.

公开(公告)号：US12191883B2

公开(公告)日：2025-01-07

申请号：US18327765

申请日：2023-06-01

Applicant: QUALCOMM Incorporated

Inventor： Shrinivas Kudekar ,  Thomas Joseph Richardson

IPC: H03M13/11 ,  H03M13/00 ,  H03M13/03 ,  H04L1/00 ,  H04L1/1812

Abstract: Certain aspects of the present disclosure generally relate to techniques for compactly describing lifted low-density parity-check (LDPC) codes. A method by a transmitting device generally includes selecting a first lifting size value and a first set of lifting values; generating a first lifted LDPC code by applying the first set of lifting values to interconnect edges in copies of a parity check matrix (PCM) having a first number of variable nodes and a second number of check nodes; determining a second set of lifting values for generating a second lifted LDPC code for a second lifting size value based on the first lifted PCM and the first set of lifting values; encoding a set of information bits based the first lifted LDPC code or the second lifted LDPC code to produce a code word; and transmitting the code word.

公开(公告)号：US20240322840A1

公开(公告)日：2024-09-26

申请号：US18189865

申请日：2023-03-24

Applicant: QUALCOMM Incorporated

Inventor： Thomas Joseph Richardson ,  Kanke Wu ,  Bin Tian ,  Didier Johannes Richard Van Nee

IPC: H03M13/11 ,  H03M13/00 ,  H04L1/00

CPC classification number: H03M13/1174 ,  H03M13/116 ,  H03M13/616 ,  H04L1/0057

Abstract: This disclosure provides methods, components, devices and systems for low-density parity check (LDPC) coding. Some aspects more specifically relate to extending LDPC codewords to produce longer codewords. In some examples, a first wireless device may generate a baseline LDPC code by performing a first lifting on a base matrix, which may produce an LDPC code used for a current Wi-Fi implementation. The first wireless device may then perform a second lifting or a re-lifting (such as a cyclic lifting, a product lifting, a swapping lifting, or a combination thereof) to generate an extended lifted code. This extended lifted code may be an extension of the first LDPC code such that the first LDPC code may be preserved as part of the extended code. Then first wireless device may then transmit the extended LDPC code as an extended or lifted codeword.