公开(公告)号：WO1998027700A1

公开(公告)日：1998-06-25

申请号：PCT/US1997023194

申请日：1997-12-11

Applicant: QUALCOMM INCORPORATED

Inventor： QUALCOMM INCORPORATED ,  WOLF, Jack, K. ,  ZEHAVI, Ephraim

IPC: H04L27/04

CPC classification number: H04L1/006 ,  H03M13/25 ,  H03M13/256 ,  H03M13/3961 ,  H04L27/02

Abstract: A method for performing rate 2/3 Multiple Amplitude Shift Keying (MASK) encoding utilizing a rate 1/2 convolutional encoder (10) is described. In accordance with one embodiment of the invention, a rate 1/2 encoder is used to generate two coded symbols and a second bit is used as an uncoded symbol. A mapper (20) generates amplitude modulation data in response to the uncoded symbol and the pair of coded symbols whereby the uncoded symbol is the most significant. In a decoder, a variable threshold decoder (88) is used to determine the uncoded symbol where the threshold is varied on the set of coded symbols received.

Abstract translation: 描述利用速率1/2卷积编码器（10）执行速率2/3多幅度移位键控（MASK）编码的方法。 根据本发明的一个实施例，使用速率1/2编码器来生成两个编码符号，第二位用作未编码符号。 映射器（20）响应于未编码符号和编码符号对，产生幅度调制数据，由此未编码的符号是最重要的。 在解码器中，使用可变阈值解码器（88）来​​确定在所接收的编码符号集上阈值变化的未编码符号。

公开(公告)号：WO1998021879A1

公开(公告)日：1998-05-22

申请号：PCT/US1997020757

申请日：1997-11-13

Applicant: QUALCOMM INCORPORATED ,  SIH, Gilbert, C. ,  JOHN, Johnny, K.

Inventor： QUALCOMM INCORPORATED

IPC: H04N01/327

CPC classification number: H04N1/32708 ,  H04M1/725 ,  H04N1/32704 ,  H04N1/32715 ,  H04N1/32721

Abstract: A novel and improved method and apparatus for providing an interface to a digital wireless telephone system compatible with standard analog wire line telephones and analog wire line fax machines are disclosed. During a telephone call, a fax detector (11) monitors the incoming data for fax signals. If a fax is detected, the data processor (12) switches from processing the data as if it were voice to processing it as fax. In addition, the remote station is sent a signal notifying it to process the data as fax rather than voice. The fax detector (11) operates by detecting the preamble of a V.21 message, present at the beginning of every fax call. Energy is measured in both frequencies of the BFSK signals. A decision is made by analyzing these energies and locating a specific pattern which repeats itself a sufficient number of times.

Abstract translation: 公开了一种用于向与标准模拟有线电话和模拟有线线路传真机兼容的数字无线电话系统提供接口的新颖和改进的方法和装置。 在电话呼叫期间，传真检测器（11）监视传入信号的传入数据。 如果检测到传真，则数据处理器（12）从处理数据转换为如同语音一样将其作为传真处理。 另外，远程站发送一个信号通知它将数据作为传真而不是语音处理。 传真检测器（11）通过检测在每个传真呼叫开始时存在的V.21消息的前导码来操作。 在BFSK信号的两个频率上测量能量。 通过分析这些能量并找到重复自身足够次数的特定模式来做出决定。

公开(公告)号：WO1998019405A1

公开(公告)日：1998-05-07

申请号：PCT/US1997019678

申请日：1997-10-27

Applicant: QUALCOMM INCORPORATED

Inventor： QUALCOMM INCORPORATED ,  SAINTS, Keith, W. ,  TIEDEMANN, Edward, G., Jr.

IPC: H04B07/26

CPC classification number: H04L1/08 ,  H04L25/0262

Abstract: A system and method for determining the transmission rate of a data signal at a receiver of a variable rate communications system. A vocoder at a transmitter encodes a frame of data into symbols according to one of a set of discrete data rates. When the data rate is lower than the maximum, each symbol is repeated a number of times as required to achieve a constant number of symbols in each frame. The data signal is transmitted at a power proportional to the data rate of the frame. A reference signal is also transmitted. The reference signal is transmitted at a constant power. Further, the data signal has the same carrier frequency as a reference signal so that they exhibit the same fading characteristics as they are transmitted through the channel. At a receiver, the power of the reference signal is measured by the pilot measurement element (36) and the power of the data signal is measured by the traffic power measurement element (38). The rate processor (46) dtermines the ratio of the power of the data signal to the power of the reference signal, and the measured ratio is compared with a predetermined ratio of the power of a maximum rate data signal to the power of the reference signal. The result of the comparison will indicate the encoded data rate of the received frame of data. The decoder (40) then uses the rate indicated by the comparison to properly decode the frame of data. A vocoder at the receiver further processes the data for interface with the user.

Abstract translation: 一种用于确定可变速率通信系统的接收机处的数据信号的传输速率的系统和方法。 发射机中的声码器根据一组离散数据速率之一将数据帧编码成符号。 当数据速率低于最大值时，每个符号根据需要重复多次以在每个帧中实现恒定数量的符号。 以与帧的数据速率成比例的功率发送数据信号。 参考信号也被发送。 参考信号以恒定功率传输。 此外，数据信号具有与参考信号相同的载波频率，使得它们呈现与通过信道传输相同的衰落特性。 在接收机中，参考信号的功率由导频测量元件（36）测量，数据信号的功率由业务功率测量元件（38）测量。 速率处理器（46）计算数据信号的功率与参考信号的功率的比率，并将测量的比率与最大速率数据信号的功率与参考信号的功率的预定比率进行比较 。 比较结果将指示接收的数据帧的编码数据速率。 然后，解码器（40）使用由比较指示的速率来适当地解码数据帧。 在接收器处的声码器进一步处理与用户接口的数据。

公开(公告)号：WO1998015072A2

公开(公告)日：1998-04-09

申请号：PCT/US1997017379

申请日：1997-09-26

Applicant: QUALCOMM INCORPORATED

Inventor： QUALCOMM INCORPORATED ,  KRISHNAMURTHI, Rajeev ,  MOHANTY, Bibhu, P. ,  QUICK, Roy, R., Jr.

IPC: H04B07/204

CPC classification number: H04W76/19 ,  H04W4/16 ,  H04W36/08 ,  H04W92/045

Abstract: The invention is a method and apparatus for providing an Alert With Information Message signal between a mobile switching center (36) and a base station (34) in a cellular communication system. The invention recognizes that current provisions of the IS-634 standard lack support for certain required functionality on the interface between a mobile switching center (36) and a base station (34), or the A-Interface. An Alert With Information Message signal is introduced on the A-Interface to support the required functionality. Introduction of the Alert With Information Message provides support for reliable call processing on the A-Interface for the call waiting procedure, the hard handoff procedure, and the resolution of a glare condition. A message generator (38) in the mobile switching center (36) generates the Alert With Information Message, which is transmitted to message receiver (40) in the base station (34) when needed.

Abstract translation: 本发明是一种用于在蜂窝通信系统中的移动交换中心（36）和基站（34）之间提供警报信息消息信号的方法和装置。 本发明认识到IS-634标准的当前规定在移动交换中心（36）和基站（34）或A-Interface之间的接口上不支持某些所需功能。 带有信息的警报消息信号在A-Interface上引入，以支持所需的功能。 带有信息消息的警报简介为呼叫等待过程，硬切换过程和眩光条件的分辨率提供了对A接口的可靠呼叫处理的支持。 移动交换中心（36）中的消息发生器（38）产生在需要时发送到基站（34）中的消息接收机（40）的警报信息消息。

公开(公告)号：WO1998014795A1

公开(公告)日：1998-04-09

申请号：PCT/US1997017330

申请日：1997-09-26

Applicant: QUALCOMM INCORPORATED

Inventor： QUALCOMM INCORPORATED ,  LEVANON, Nadav

IPC: G01S05/12

CPC classification number: H04B7/18554 ,  G01S5/0036 ,  G01S5/12 ,  G01S13/08 ,  G01S13/74 ,  G01S2013/466

Abstract: A system and method for determining the position of a user terminal (for example, a mobile wireless telephone) in a low-Earth orbit satellite communications system (100). The system includes a user terminal (106), at least one satellite (104) with a known position and velocity, and a gateway (102) (that is, a terrestrial base station) for communicating with the user terminal (106) through the satellite (104). The method includes the steps of determining a range parameter (802) and a range-rate parameter (806). A range parameter represents a distance between the satellite and the user terminal. A range-rate parameter represents a relative radial velocity between that satellite and the user terminal. The position of the user terminal on the Earth's surface is then determined (810) based on the range parameter, the range-rate parameter, and the known position and velocity of the satellite.

Abstract translation: 一种用于确定低地球轨道卫星通信系统（100）中的用户终端（例如，移动无线电话）的位置的系统和方法。 该系统包括用户终端（106），具有已知位置和速度的至少一个卫星（104）以及用于通过所述用户终端（106）与用户终端（106）通信的网关（102）（即，地面基站） 卫星（104）。 该方法包括确定范围参数（802）和范围速率参数（806）的步骤。 范围参数表示卫星与用户终端之间的距离。 范围速率参数表示该卫星和用户终端之间的相对径向速度。 然后基于范围参数，距离速率参数以及卫星的已知位置和速度确定用户终端在地球表面上的位置（810）。

公开(公告)号：WO1998014794A1

公开(公告)日：1998-04-09

申请号：PCT/US1997017325

申请日：1997-09-26

Applicant: QUALCOMM INCORPORATED

Inventor： QUALCOMM INCORPORATED ,  VICTOR, Edward, B.

IPC: G01S01/04

CPC classification number: G01S5/02 ,  G01S1/04 ,  G01S5/0036

Abstract: A system and method for resolving ambiguity in an ambiguous position solution for a user terminal position in a satellite communications system which includes a user terminal (106), at least one satellite (104), and a gateway (102) communicating with the user terminal (106) through the satellite (104). Each satellite (104) has a plurality of satellite beams (601-616) which each illuminate a region on the Earth in a known pattern relative to a satellite sub-track (404). A satellite beam (601-616) illuminating the user terminal (106) is identified along with its corresponding position relative to the sub-track (404). The orientations of possible user terminal positions (408A, 408B) and the identified beam (601-616) relative to the satellite sub-track (404) are compared to each other. Possible user terminal positions (408A, 408B) falling on an incorrect side of the sub-track (404) from the detected beam (601-616) illuminating the user terminal (106), are considered as incorrect solutions for that user terminal (106). The ambiguity solution can be determined using satellite identification and comparison elements in the user terminal (106), or at the gateway (102), in which case certain beam information is reported to the gateway (102). In further aspects of the invention, the beam being identified can be either a forward link (601-616) or reverse link (621-636) beam, or both, and each link has a different beam pattern.

Abstract translation: 一种用于解决卫星通信系统中的用户终端位置的模糊位置解决方案中的歧义的系统和方法，所述卫星通信系统包括用户终端（106），至少一个卫星（104）和与用户终端通信的网关（102） （106）通过卫星（104）。 每个卫星（104）具有多个卫星光束（601-616），每个卫星光束以相对于卫星子轨道（404）的已知模式照亮地球上的区域。 照亮用户终端（106）的卫星光束（601-616）及其相对于子轨道（404）的对应位置被识别。 将可能的用户终端位置（408A，408B）和所识别的波束（601-616）相对于卫星子轨道（404）的取向彼此进行比较。 从检测到的用户终端（106）的光束（601-616）落入子轨道（404）的不正确侧的可能的用户终端位置（408A，408B）被认为是该用户终端（106 ）。 可以使用用户终端（106）中的卫星识别和比较元素或网关（102）来确定模糊度解决方案，在这种情况下，某些波束信息被报告给网关（102）。 在本发明的另外的方面，被识别的波束可以是前向链路（601-616）或反向链路（621-636）或两者，并且每个链路具有不同的波束图案。

公开(公告)号：WO1998014026A1

公开(公告)日：1998-04-02

申请号：PCT/US1997016976

申请日：1997-09-23

Applicant: QUALCOMM INCORPORATED

Inventor： QUALCOMM INCORPORATED ,  SCHIFF, Leonard, N. ,  MILLER, David, S.

IPC: H04Q07/38

CPC classification number: H04B7/18541

Abstract: A handoff technique in which system users detect transitions in service between a current service area (B10, S4) and an adjacent service area (B2, S5), and request a forward link channel in the new service area (B2, S5) when a detected signal strength for the new service area exceeds predetermined threshold levels. The forward communications link in the current service area is maintained until the strength of the new service area signal (B2, S5) reaches a certain level and appropriate channel quality is confirmed, as based on various known criteria. Typically, service area transitions are detected using the signal strength of pilot or paging signals associated with service areas, which are used to determine a relative signal strength of new service area signals. Pilot signal level adjustments used to counter roll-off effects are detected and compensated for in comparing signal levels. To minimize the burden on system resources, new service area signals are not selectable until a minimum time has passed, or a minimum change in energy from a prior pilot signal is detected. In addition, communications using the previous service area can be dropped almost immediately upon engaging the new service area.

Abstract translation: 一种切换技术，其中系统用户检测当前服务区域（B10，S4）和相邻服务区域（B2，S5）之间的服务转换，并且当一个服务区域（B2，S5）中的前向链路信道 新服务区域的检测信号强度超过预定阈值水平。 根据各种已知的标准，保持当前服务区域中的正向通信链路，直到新服务区域信号（B2，S5）的强度达到一定水平并确认适当的信道质量。 通常，使用与服务区域相关联的导频或寻呼信号的信号强度检测服务区转换，其用于确定新服务区信号的相对信号强度。 在比较信号电平时，检测并补偿用于计算滚降效果的导频信号电平调整。 为了最小化系统资源的负担，新的服务区域信号在最小时间过去之前是不可选择的，或者是从先前的导频信号中检测到能量的最小变化。 此外，使用先前服务区域的通信可以在新服务区域几乎立即被丢弃。

公开(公告)号：WO1998013941A1

公开(公告)日：1998-04-02

申请号：PCT/US1997017042

申请日：1997-09-24

Applicant: QUALCOMM INCORPORATED

Inventor： QUALCOMM INCORPORATED ,  DEJACO, Andrew, P. ,  JACOBS, Paul, E.

IPC: H03M13/00

CPC classification number: G10L19/005 ,  G10L25/69 ,  H03M13/00

Abstract: The mobile telephone detects bad data packets by decoding speech parameters represented by the packets and comparing those speech parameters against acceptable ranges of speech parameters. If the speech parameters do not lie within the acceptable ranges, the packets are discarded. This speech parameter-based detection of bad data packets is particularly useful in mobile telephones receiving variable rate data packets wherein an error in determining the rate of a packet results in the entire packet being decoded at an incorrect rate, thereby likely causing an annoying audible artifact in the decoded speech signal. Such rate detection errors can occur eventhough a CRC or other conventional error detection check fails to detect the bad packet. In an exemplary implementation, receiver (132) of mobile telephone (128) receives signals encoded with TIA/EIA/IS-95-A standards. Variable rate decoder (140) determines linear speech parameter frequencies and codebook gain parameters using linear predictive coding techniques. The parameters are tested against acceptable ranges to detect bad data packets by speech parameter examining unit (144).

Abstract translation: 移动电话通过解码由分组表示的语音参数来检测不良数据分组，并将这些语音参数与可接受的语音参数范围​​进行比较。 如果语音参数不在可接受的范围内，则丢弃分组。 这种基于语音参数的错误数据分组的检测在接收可变速率数据分组的移动电话中特别有用，其中确定分组速率的错误导致整个分组以不正确的速率被解码，从而可能引起令人讨厌的可听见的伪像 在解码的语音信号中。 这种速率检测错误可能发生在CRC或其他常规错误检测检查不能检测到坏数据包的情况下。 在示例性实现中，移动电话（128）的接收机（132）接收用TIA / EIA / IS-95-A标准编码的信号。 可变速率解码器（140）使用线性预测编码技术确定线性语音参数频率和码本增益参数。 根据可接受的范围测试参数，以通过语音参数检查单元（144）检测不良数据分组。

公开(公告)号：WO1998006230A2

公开(公告)日：1998-02-12

申请号：PCT/US1997013869

申请日：1997-08-06

Applicant: QUALCOMM INCORPORATED

Inventor： QUALCOMM INCORPORATED ,  PADOVANI, Roberto

IPC: H04Q07/38

CPC classification number: H04W36/30 ,  H04W36/0066 ,  H04W36/18

Abstract: In a communications network, a network user communicates through a remote unit (155) via at least one base station (150). The communications network includes a first mobile switching center (100) for controlling communications through a first set of base stations (102) and a second mobile switching center (112) for controlling communications through a second set of base stations (108). The network also includes a service providing base station (102D) controlled by the first mobile switching center (100) and providing service to a first transition coverage area using a first pseudorandom noise code. The first transition coverage area defines a boundary between a first system (102) controlled by the first mobile switching center (100) and a second system (108) controlled by the second mobile switching center (112). The network further includes a passage providing base station controlled (108D) by the second mobile switching center (112) for providing service to the first transition area using a second pseudorandom noise code offset in time by a first amount from the first pseudorandom noise code. The passage providing base station provides service to a remote unit (155) only if the remote unit (155) is entering the first transition coverage area while exiting the second system or is about to exit the first transition coverage area while entering the second system.

Abstract translation: 在通信网络中，网络用户经由至少一个基站（150）通过远程单元（155）进行通信。 通信网络包括用于通过第一组基站（102）控制通信的第一移动交换中心（100）和用于通过第二组基站（108）控制通信的第二移动交换中心（112）。 网络还包括由第一移动交换中心（100）控制的服务提供基站（102D），并且使用第一伪随机噪声码向第一过渡覆盖区域提供服务。 第一过渡覆盖区域定义由第一移动交换中心（100）控制的第一系统（102）和由第二移动交换中心（112）控制的第二系统（108）之间的边界。 网络还包括通过由第二移动交换中心（112）提供基站控制（108D）的通道，用于使用第二伪随机噪声码偏移从第一伪随机噪声码向第一过渡区提供服务。 仅当远程单元（155）在退出第二系统时进入第一过渡覆盖区域或即将在进入第二系统期间退出第一过渡覆盖区域时，通过提供基站向远程单元（155）提供服务。

公开(公告)号：WO1997050174A1

公开(公告)日：1997-12-31

申请号：PCT/US1997010925

申请日：1997-06-23

Applicant: QUALCOMM INCORPORATED

Inventor： QUALCOMM INCORPORATED ,  EASTON, Kenneth, D. ,  BLACK, Peter, J.

IPC: H03H17/06

CPC classification number: H03H17/0607

Abstract: The finite impulse response (FIR) filter (20) is implemented as a table (104) using read-only memory (ROM). The FIR filter table stores a pre-calculated output filter value for each permissible combination of input values (102) to be filtered. Streams of input values are successively shifted into the table using a shift register (106) and corresponding output values are successively output. The telephone employs a data burst randomizer (18) to provide a data signal composed of sequences of null or 0 values and sequences of antipodal values (+1's and -1's). Hence, the permissible input combinations for the FIR filter include only patterns containing either all antipodal signals, all null signals, leading antipodal signals followed by trailing null signals, or leading null signals followed by trailing antipodal signals. The FIR filter look up is configured to exploit these limitations on the input streams yielding a look up table having relatively few entries.

Abstract translation: 有限脉冲响应（FIR）滤波器（20）使用只读存储器（ROM）被实现为表格（104）。 FIR滤波器表存储要过滤的输入值（102）的每个允许组合的预先计算的输出滤波器值。 使用移位寄存器（106）将输入值的流连续移位到表中，并且依次输出相应的输出值。 电话采用数据突发随机化器（18）来提供由零值或0值序列组成的数据信号和反对值序列（+ 1和-1）。 因此，FIR滤波器的允许输入组合仅包括包含所有对称信号，全空信号，引导对齐信号跟随尾随空信号或前导空信号后跟跟随对抗信号的模式。 FIR滤波器查找被配置为利用这些对输入流的限制，产生具有相对较少条目的查找表。