公开(公告)号：US07773679B2

公开(公告)日：2010-08-10

申请号：US11229067

申请日：2005-09-16

Applicant: Rajiv Laroia ,  Junyi Li ,  Hui Jin

Inventor： Rajiv Laroia ,  Junyi Li ,  Hui Jin

IPC: H04K1/10

CPC classification number: H04L5/0058 ,  H04L5/0007 ,  H04L5/0046 ,  H04L27/2626

Abstract: Special DC tone treatment in a wireless communications system, e.g., an OFDM system, is discussed. In the downlink, a wireless terminal receiver introduces self-interference at the DC tone from the RF/baseband conversion. A base station every so often does not transmit on the downlink DC tone while continuing to transmit on other downlink tones. Wireless terminals measure received signal on the downlink DC tone during the time of suspended DC tone transmission, estimate self-interference and apply a correction to other received downlink DC tones. In the uplink DC tone interference is a composite of the assigned wireless terminal transmitter's baseband/RF conversion self-interference and air link noise. During one symbol interval of an N symbol interval dwell, the uplink DC tone is reserved for a special modulation symbol, which is a predetermined function of the other N−1 modulation symbols. At the base station, its receiver receives a set of modulation symbols conveyed by the uplink DC tone for a dwell, calculates the average DC component and corrects the received N−1 modulation symbols.

Abstract translation: 讨论了无线通信系统（例如，OFDM系统）中的特殊DC音调处理。 在下行链路中，无线终端接收机在来自RF /基带转换的DC音调下引入自干扰。 基站通常在下行链路DC音调下不发送，同时在其他下行链路音调上继续发送。 无线终端在暂停的直流音调传输期间测量下行链路直流音上的接收信号，估计自干扰并对其他接收的下行链路直流音调进行校正。 在上行链路中，直流音干扰是指定的无线终端发射机的基带/ RF转换自干扰和空中链路噪声的组合。 在N个符号间隔驻留的一个符号间隔期间，上行链路DC频调被保留用于作为其他N-1个调制符号的预定函数的特殊调制符号。 在基站，其接收机接收由上行链路DC频调传送的一组调制符号进行驻留，计算平均DC分量并校正接收到的N-1个调制符号。

公开(公告)号：US20070019583A1

公开(公告)日：2007-01-25

申请号：US11229019

申请日：2005-09-16

Applicant: Rajiv Laroia ,  Hui Jin ,  Junyi Li ,  Frank Lane ,  Tom Richardson

Inventor： Rajiv Laroia ,  Hui Jin ,  Junyi Li ,  Frank Lane ,  Tom Richardson

IPC: H04Q7/00

CPC classification number: H04L1/0025 ,  H04L1/0004 ,  H04L1/0005 ,  H04L1/0029 ,  H04L1/0039 ,  H04L1/0046 ,  H04L1/0057 ,  H04L1/0075 ,  H04L5/0053 ,  H04L27/0008 ,  H04L27/0012 ,  H04L27/2602 ,  H04L2001/0098

Abstract: Downlink traffic channel data rate options and methods of indicating to a wireless terminal a utilized downlink data rate option are described. The downlink traffic channel rate option for a segment is conveyed using an assignment signal and/or a block in the downlink traffic channel segment which is not used for user data. Downlink segment assignment signals in some implementations allocate fewer bits for rate option indication than are required to uniquely identify each option. In some implementations low rate options, e.g., using QPSK, are uniquely identified via assignment signals. Higher rate options, e.g., using QAM16 modulation, are conveyed via the distinct information block in the downlink traffic segment using a first coding/modulation method. Still higher rate options, e.g., using QAM16, QAM64, or QAM256, are conveyed via the information block in the segment using a second coding/modulation method which is applied to the rate option information.

Abstract translation: 下行业务信道数据速率选项和向无线终端指示使用的下行链路数据速率选项的方法进行描述。 使用未用于用户数据的下行链路业务信道段中的分配信号和/或块来传送段的下行业务信道速率选项。 在一些实现中的下行链路段分配信号比用于唯一地标识每个选项所需的比特率分配更少的比特选项指示。 在一些实现中，通过分配信号唯一地识别低速率选项，例如使用QPSK。 使用第一编码/调制方法，通过下行链路业务段中的不同信息块传送更高速率选项，例如使用QAM16调制。 使用应用于速率选项信息的第二编码/调制方法，通过片段中的信息块传送诸如使用QAM16，QAM64或QAM256的更高速率选项。

公开(公告)号：US08306541B2

公开(公告)日：2012-11-06

申请号：US11230331

申请日：2005-09-19

Applicant: Rajiv Laroia ,  Hui Jin ,  Tom Richardson ,  Junyi Li

Inventor： Rajiv Laroia ,  Hui Jin ,  Tom Richardson ,  Junyi Li

IPC: H04W72/00 ,  H04W4/00

CPC classification number: H04W28/22

Abstract: A wireless terminal receives an uplink traffic channel segment assignment including a maximum uplink rate option indicator. Each uplink rate option corresponds to a number of information bits, coding rate and modulation method. The maximum rate option indicator indicates the highest rate option that the wireless terminal is permitted to use when transmitting in the assigned traffic channel segment from the perspective of the base station. In some embodiments, the wireless terminal uses interference measurements to further quality, e.g., conditionally reduce, the maximum uplink rate option that may be used. Then, the wireless terminal selects an uplink rate option to use which is less than the determined allowed maximum uplink rate option, e.g., based on the amount of user data to communicate. The wireless terminal transmits data in the assigned uplink traffic channel segment in accordance with the wireless terminal selected uplink rate.

Abstract translation: 无线终端接收包括最大上行链路速率选项指示符的上行业务信道段分配。 每个上行速率选项对应于多个信息比特，编码率和调制方法。 最大速率选项指示符指示从基站的角度在从分配的业务信道段中发送时允许无线终端使用的最高速率选项。 在一些实施例中，无线终端使用干扰测量来进一步提高质量，例如有条件地减少可能使用的最大上行链路速率选项。 然后，无线终端例如基于要进行通信的用户数据量，选择所使用的上行链路速率选项小于所确定的允许的最大上行链路速率选项。 无线终端根据所选择的无线终端上行速率在所分配的上行业务信道段中发送数据。

公开(公告)号：US08213538B2

公开(公告)日：2012-07-03

申请号：US11945720

申请日：2007-11-27

Applicant: Thomas Richardson ,  Hui Jin ,  Rajiv Laroia ,  Junyi Li

Inventor： Thomas Richardson ,  Hui Jin ,  Rajiv Laroia ,  Junyi Li

IPC: H04L27/04

CPC classification number: H04L5/023 ,  H04B1/713 ,  H04B7/068 ,  H04B7/0691 ,  H04L1/06 ,  H04L25/0202 ,  H04L25/4902 ,  H04L27/2604 ,  H04W52/28 ,  H04W52/325

Abstract: Methods and apparatus for improving the utilization of air link resources in a wireless communications system, e.g., an OFDM MIMO system, including a base station with multiple transmit antennas are described. Superposition signaling in the downlink is employed. The superimposed signal includes a first transform result signal and a second lower power signal. The first transform result signal is generated from a first signal, which uses position modulation, e.g., including null components and high power non-null components. Different components of the first transform result signal are directed to different transmit antennas. The first transform result signal communicates information to a first wireless terminal, e.g., a weak receiver. The non-null received elements of the first transform result signal are utilized by a second wireless terminal, e.g., a superior receiver, as pilots to determine a channel estimate. The second wireless terminal uses the determined channel estimate to demodulate received second signals.

Abstract translation: 描述了在包括具有多个发射天线的基站的无线通信系统（例如OFDM MIMO系统）中改善空中链路资源的利用的方法和装置。 采用下行链路中的叠加信令。 叠加信号包括第一变换结果信号和第二较低功率信号。 第一变换结果信号从使用位置调制的第一信号产生，例如包括零分量和高功率非零分量。 第一变换结果信号的不同组件被引导到不同的发射天线。 第一变换结果信号将信息传送到第一无线终端，例如弱接收机。 第一变换结果信号的非零接收元件由第二无线终端（例如，上级接收机）用作导频以确定信道估计。 第二无线终端使用确定的信道估计来解调所接收的第二信号。

公开(公告)号：US07773703B2

公开(公告)日：2010-08-10

申请号：US11229068

申请日：2005-09-16

Applicant: Rajiv Laroia ,  Junyi Li ,  Hui Jin

Inventor： Rajiv Laroia ,  Junyi Li ,  Hui Jin

IPC: H03D1/04

CPC classification number: H04L25/062 ,  H04L27/2647

Abstract: Special DC tone treatment in a wireless communications system, e.g., an OFDM system, is discussed. In the downlink, a wireless terminal receiver introduces self-interference at the DC tone from the RF/baseband conversion. A base station every so often does not transmit on the downlink DC tone while continuing to transmit on other downlink tones. Wireless terminals measure received signal on the downlink DC tone during the time of suspended DC tone transmission, estimate self-interference and apply a correction to other received downlink DC tones. In the uplink DC tone interference is a composite of the assigned wireless terminal transmitter's baseband/RF conversion self-interference and air link noise. During one symbol interval of an N symbol interval dwell, the uplink DC tone is reserved for a special modulation symbol, which is a predetermined function of the other N-1 modulation symbols. At the base station, its receiver receives a set of modulation symbols conveyed by the uplink DC tone for a dwell, calculates the average DC component and corrects the received N-1 modulation symbols.

Abstract translation: 讨论了无线通信系统（例如，OFDM系统）中的特殊DC音调处理。 在下行链路中，无线终端接收机在来自RF /基带转换的DC音调下引入自干扰。 基站通常在下行链路DC音调下不发送，同时在其他下行链路音调上继续发送。 无线终端在暂停的直流音调传输期间测量下行链路直流音上的接收信号，估计自干扰并对其他接收的下行链路直流音调进行校正。 在上行链路中，直流音干扰是指定的无线终端发射机的基带/ RF转换自干扰和空中链路噪声的组合。 在N个符号间隔驻留的一个符号间隔期间，上行链路DC频调被保留用于作为其他N-1个调制符号的预定函数的特殊调制符号。 在基站，其接收机接收由上行链路DC频调传送的一组调制符号进行驻留，计算平均DC分量并校正接收到的N-1个调制符号。

公开(公告)号：US07706456B2

公开(公告)日：2010-04-27

申请号：US11370219

申请日：2006-03-07

Applicant: Rajiv Laroia ,  Hui Jin ,  Tom Richardson ,  Junyi Li

Inventor： Rajiv Laroia ,  Hui Jin ,  Tom Richardson ,  Junyi Li

IPC: H04K1/10

CPC classification number: H04L1/0028 ,  H04B14/026 ,  H04L1/0003 ,  H04L1/0007 ,  H04L1/0009 ,  H04L1/0025 ,  H04L1/0026 ,  H04L1/0033 ,  H04L5/023 ,  H04L5/04 ,  H04L27/0008 ,  H04L27/2604 ,  H04L27/3488 ,  Y02D50/10

Abstract: A stream of modulation symbols from a zero symbol rate (ZSR) coding/modulation module and a stream of modulation symbols from another type of coding/modulation module are input into an interweaver module. The interweaver module mixes the two input streams when assigning modulation symbols to be communicated in a segment. If a ZSR modulation symbol is non-zero, the ZSR modulation symbol is allocated a transmission position. If the ZSR modulation symbol is a zero modulation symbol, the modulation symbol from the other coding/modulation module is allocated the transmission position. The non-zero modulation symbols from the ZSR module are higher in power than the non-zero modulation symbols from the other module, thus facilitating detection and recovery.

Abstract translation: 来自零符号率（ZSR）编码/调制模块的调制符号流和来自另一种类型的编码/调制模块的调制符号流被输入到交织器模块中。 当分配要在段中传送的调制符号时，交织器模块混合两个输入流。 如果ZSR调制符号不为零，则ZSR调制符号被分配一个传输位置。 如果ZSR调制符号是零调制符号，则将来自另一个编码/调制模块的调制符号分配给发送位置。 来自ZSR模块的非零调制符号的功率高于来自另一个模块的非零调制符号，因此便于检测和恢复。

公开(公告)号：US20070010226A1

公开(公告)日：2007-01-11

申请号：US11229348

申请日：2005-09-16

Applicant: Rajiv Laroia ,  Junyi Li ,  Hui Jin

Inventor： Rajiv Laroia ,  Junyi Li ,  Hui Jin

IPC: H04B1/10 ,  H04B7/00

CPC classification number: H04L27/2647 ,  H04B1/12 ,  H04L25/061

Abstract: Special DC tone treatment in a wireless communications system, e.g., an OFDM system, is discussed. In the downlink, a wireless terminal receiver introduces self-interference at the DC tone from the RF/baseband conversion. A base station every so often does not transmit on the downlink DC tone while continuing to transmit on other downlink tones. Wireless terminals measure received signal on the downlink DC tone during the time of suspended DC tone transmission, estimate self-interference and apply a correction to other received downlink DC tones. In the uplink DC tone interference is a composite of the assigned wireless terminal transmitter's baseband/RF conversion self-interference and air link noise. During one symbol interval of an N symbol interval dwell, the uplink DC tone is reserved for a special modulation symbol, which is a predetermined function of the other N−1 modulation symbols. At the base station, its receiver receives a set of modulation symbols conveyed by the uplink DC tone for a dwell, calculates the average DC component and corrects the received N−1 modulation symbols.

Abstract translation: 讨论了无线通信系统（例如，OFDM系统）中的特殊DC音调处理。 在下行链路中，无线终端接收机在来自RF /基带转换的DC音调下引入自干扰。 基站通常在下行链路DC音调下不发送，同时在其他下行链路音调上继续发送。 无线终端在暂停的直流音调传输期间测量下行链路直流音上的接收信号，估计自干扰并对其他接收的下行链路直流音调进行校正。 在上行链路中，直流音干扰是指定的无线终端发射机的基带/ RF转换自干扰和空中链路噪声的组合。 在N个符号间隔驻留的一个符号间隔期间，上行链路DC频调被保留用于作为其他N-1个调制符号的预定函数的特殊调制符号。 在基站，其接收机接收由上行链路DC频调传送的一组调制符号进行驻留，计算平均DC分量并校正接收到的N-1个调制符号。

公开(公告)号：US20060203713A1

公开(公告)日：2006-09-14

申请号：US11370204

申请日：2006-03-07

Applicant: Rajiv Laroia ,  Hui Jin ,  Tom Richardson ,  Junyi Li

Inventor： Rajiv Laroia ,  Hui Jin ,  Tom Richardson ,  Junyi Li

IPC: H04J11/00

CPC classification number: H04L27/2601 ,  H04L5/023 ,  H04L25/49 ,  H04L25/4902 ,  H04L27/0008

Abstract: A device includes a zero symbol rate (ZSR) coding/modulation module and a second type coding/modulation module. Both modules generate modulation symbols to be conveyed using the same air link resources but with the non-zero ZSR symbols having a higher power level. The ZSR module generates a mixture of zero and non-zero modulation symbols. A ZSR modulation scheme communicates information using both the position of the non-zero modulation symbols and the phase and/or amplitude of the non-zero modulation symbols. Different ZSR schemes, implementing different ratios relating the number of zero symbols to the total number of symbols, can be associated with different low data rates while second module modulation schemes can be associated with different high data rates. Modulation symbols from two modules are in some embodiments, superimposed. In some embodiments, non-zero ZSR modulation symbols punch out second module modulation symbols which occupy the same air link resource.

公开(公告)号：US09137072B2

公开(公告)日：2015-09-15

申请号：US11486895

申请日：2006-07-14

Applicant: Tom Richardson ,  Hui Jin ,  Junyi Li ,  Vladimir Parizhisky

Inventor： Tom Richardson ,  Hui Jin ,  Junyi Li ,  Vladimir Parizhisky

IPC: H04B17/00 ,  H04L27/26 ,  H04W52/08 ,  H04W52/14 ,  H04W28/18

CPC classification number: H04L27/2602 ,  H04L1/0004 ,  H04L27/2627 ,  H04W28/18 ,  H04W52/08 ,  H04W52/146 ,  H04W72/0413

Abstract: In a first mode of dedicated control channel (DCCH) operation, a wireless terminal is allocated more segments than in a second mode. The wireless terminal uses different information bit to modulation symbol mapping in the different modes. On a per DCCH segment basis, the same number of modulation symbols are communicated in either mode but more information bits are conveyed in the second mode. Information bits for a DCCH segment are partitioned into two subsets. The two subsets are used to generate another set, each of the two subsets and the another set are input to the same mapping function to generate three equal size sets of modulation symbols which are transmitted via the DCCH segment. Uplink tone hopping is used such that one of the equal size sets of modulation symbols for the DCCH segment uses the same tone but a different set uses a different tone.

Abstract translation: 在专用控制信道（DCCH）操作的第一模式中，与第二模式相比，无线终端被分配更多的分组。 无线终端在不同模式下使用不同的信息比特来调制符号映射。 在每个DCCH段的基础上，以任一模式传送相同数量的调制符号，但在第二模式中传送更多的信息位。 DCCH段的信息位被划分成两个子集。 这两个子集用于生成另一集合，两个子集中的每一个和另一个集合被输入到相同的映射函数，以生成经由DCCH段发送的三个相等大小的调制符号集合。 使用上行链路跳频使得用于DCCH段的相等大小的调制符号组之一使用相同的音调，但是不同的组使用不同的音调。

公开(公告)号：US08593932B2

公开(公告)日：2013-11-26

申请号：US11370204

申请日：2006-03-07

Applicant: Rajiv Laroia ,  Hui Jin ,  Tom Richardson ,  Junyi Li

Inventor： Rajiv Laroia ,  Hui Jin ,  Tom Richardson ,  Junyi Li

IPC: H04B14/04 ,  H04B7/165

CPC classification number: H04L27/2601 ,  H04L5/023 ,  H04L25/49 ,  H04L25/4902 ,  H04L27/0008

Abstract: A device includes a zero symbol rate (ZSR) coding/modulation module and a second type coding/modulation module. Both modules generate modulation symbols to be conveyed using the same air link resources but with the non-zero ZSR symbols having a higher power level. The ZSR module generates a mixture of zero and non-zero modulation symbols. A ZSR modulation scheme communicates information using both the position of the non-zero modulation symbols and the phase and/or amplitude of the non-zero modulation symbols. Different ZSR schemes, implementing different ratios relating the number of zero symbols to the total number of symbols, can be associated with different low data rates while second module modulation schemes can be associated with different high data rates. Modulation symbols from two modules are in some embodiments, superimposed. In some embodiments, non-zero ZSR modulation symbols punch out second module modulation symbols which occupy the same air link resource.

Abstract translation: 一种设备包括零符号速率（ZSR）编码/调制模块和第二类型编码/调制模块。 两个模块都使用相同的空中链路资源生成要传送的调制符号，但是具有较高功率电平的非零ZSR符号。 ZSR模块产生零和非零调制符号的混合。 ZSR调制方案使用非零调制符号的位置和非零调制符号的相位和/或幅度来传送信息。 不同的ZSR方案可以将不同比例的零符号与零符号总数相关联，可以与不同的低数据速率相关联，而第二模块调制方案可以与不同的高数据速率相关联。 在一些实施例中，来自两个模块的调制符号被叠加。 在一些实施例中，非零ZSR调制符号冲破占据相同空中链路资源的第二模块调制符号。