公开(公告)号：WO1997018650A1

公开(公告)日：1997-05-22

申请号：PCT/US1996017186

申请日：1996-10-25

Applicant: ERICSSON INC.

Inventor： ERICSSON INC. ,  CHENNAKESHU, Sandeep ,  RYDBECK, Nils ,  HASSAN, Amer, A. ,  DENT, Paul, W.

IPC: H04L01/08

CPC classification number: H04L1/08 ,  H04B7/18567 ,  H04W68/00 ,  H04W68/02 ,  H04W88/185

Abstract: A method and system for increasing the signal margin of a radiocommunication link to provide a short message service which is reliable, even under non-ideal conditions. According to the method, an increase in transmission power is used in combination with bit repetition to increase signal margin without complications in the mobile unit design, significant delay, or co-channel interference. Where a more significant increase in signal margin is desired, when a longer message is required, or for voice messages, the message may be stored and the mobile unit alerted of the message.

Abstract translation: 一种用于增加无线电通信链路的信号余量以提供即使在非理想条件下也是可靠的短消息服务的方法和系统。 根据该方法，与比特重复结合使用传输功率的增加以增加信号容限，而不会在移动单元设计，显着的延迟或同信道干扰中出现并发症。 在需要更大幅度地增加信号余量的情况下，当需要更长的消息或者对于语音消息时，可以存储消息并且移动单元提醒消息。

公开(公告)号：WO1997008838A2

公开(公告)日：1997-03-06

申请号：PCT/US1996012958

申请日：1996-08-12

Applicant: ERICSSON INC. ,  AUTRY, George, M., IV ,  HOGE, Philip, M. ,  LUTTRELL, Edward, N. ,  RODERIQUE, William, J. ,  RONDEAU, Michael, N. ,  THOMSON, Bradley, A.

Inventor： ERICSSON INC.

IPC: H04B00/00

CPC classification number: H04L29/06 ,  H04L12/66 ,  H04L69/08 ,  H04L69/16 ,  H04L69/161 ,  H04L69/166 ,  H04L69/168 ,  H04L69/169 ,  H04L69/22

Abstract: In a packet-base communications system where each packet includes a header and an associated data portion, message packets are communicated between devices on first and second networks through a gateway. The first network uses a standard internetwork protocol (IP). Predetermined fields in the standard (IP) header of each message packet are eliminated to obtain a modified header before transmitting message packets over the second network to the second device. Conversely, one or more predetermined fields are added to the modified header of each packet in another message from the second device to the first device to convert that modified header into a corresponding standard IP header before transmission over the first network. In a specific embodiment, the present invention permits internetwork communications between computers in a radio frequency communications network and computers connected to a wireline network compatible with conventional TCP/IP protocols. Unnecessary IP header bits are removed before packets are transmitted over the radio network to conserve RF channel bandwidth. Knowledge of information already present on the data link layer of the RF channel communications protocol is used to omit unnecessary or redundant fields in the standard IP header of the network layer. Enough information is preserved in the reduced IP network header so that the standard IP header may be reassembled/reconstructed.

Abstract translation: 在每个分组包括报头和相关联的数据部分的分组基通信系统中，通过网关在第一和第二网络上的设备之间传送消息分组。 第一个网络使用标准的互联网络协议（IP）。 消除每个消息分组的标准（IP）报头中的预定字段，以便在通过第二网络向第二设备发送消息分组之前获得修改的报头。 相反，一个或多个预定字段被添加到来自第二设备的另一个消息中的每个分组的修改报头到第一设备，以便在通过第一网络传输之前将该修改的报头转换成对应的标准IP报头。 在具体实施例中，本发明允许射频通信网络中的计算机与连接到与常规TCP / IP协议兼容的有线网络的计算机之间的互联网络通信。 在通过无线电网络传输分组之前，不必要的IP报头位被去除，以节省RF信道带宽。 已经存在于RF信道通信协议的数据链路层上的信息的知识被用于在网络层的标准IP报头中省略不必要的或冗余的字段。 在减少的IP网络报头中保留足够的信息，以便可以重新组合/重构标准IP报头。

公开(公告)号：WO1997004529A1

公开(公告)日：1997-02-06

申请号：PCT/US1996011666

申请日：1996-07-15

Applicant: ERICSSON INC.

Inventor： ERICSSON INC. ,  DOLMAN, Rodney, A. ,  LAMPE, Ross, W. ,  ZHOU, Xue-Song

IPC: H04B01/04

CPC classification number: H04B1/0475 ,  H03B2201/0208

Abstract: Reduction of transmitter exciter chain generated noise from the receive band of a portable/hand-held duplex transceiver is achieved using a high output power, low-noise voltage-controlled oscillator (VCO) in the transmitter exciter chain. Using this high-power, low-noise oscillator as the RF source in the transmitter exciter chain precludes the need for the conventional buffer/driver amplifier stage and an associated inter-stage noise filter. Elimination of buffer/driver stage components and bulky inter-stage noise filter components allows complete integration of transmitter exciter chain components resulting in reduced size and cost.

Abstract translation: 使用发射机激励器链中的高输出功率低噪声压控振荡器（VCO）来实现从便携式/手持式双工收发器的接收频带减少发射机激励器链产生的噪声。 使用这种高功率，低噪声振荡器作为发射机励磁链中的RF源，排除了传统的缓冲器/驱动放大器级和相关的级间噪声滤波器的需要。 消除缓冲器/驱动器级元件和庞大的级间噪声滤波器元件允许发射机激励器链组件的完全集成，从而减小尺寸和成本。

公开(公告)号：WO1996038879A1

公开(公告)日：1996-12-05

申请号：PCT/US1996008046

申请日：1996-04-30

Applicant: ERICSSON INC.

Inventor： ERICSSON INC. ,  HAYES, Gerard, J. ,  LAMPE, Ross, W.

IPC: H01Q09/30

CPC classification number: H01Q9/32 ,  H01Q1/242 ,  H01Q1/38 ,  H01Q5/378 ,  H01Q5/385 ,  H01Q5/49 ,  H01Q9/30

Abstract: The printed monopole antenna having a printed circuit board (12) with a first side and a second side, a monopole radiating element comprising a first conductive trace (18) formed on the printed circuit board first side, and a conductive element comprising a second conductive trace (20) formed on the printed circuit board adjacent the first conductive trace. The second conductive trace (20) defines and extended ground plane which prevents the radiation of currents from that portion of the first conductive trace aligned with the second conductive trace. The second conductive trace may be formed on either side of the printed circuit board. The printed monopole antenna may be modified to operate within two separate frequency bandwidths.

Abstract translation: 印刷的单极天线具有具有第一侧和第二侧的印刷电路板（12），单极辐射元件包括形成在印刷电路板第一侧上的第一导电迹线（18）和包括第二导电 形成在与第一导电迹线相邻的印刷电路板上的迹线（20）。 第二导电迹线（20）限定和延伸的接地平面，其防止来自第一导电迹线的与第二导电迹线对准的部分的电流的辐射。 第二导电迹线可以形成在印刷电路板的任一侧上。 打印的单极天线可以被修改为在两个分开的频率带宽内工作。

公开(公告)号：WO1996037972A1

公开(公告)日：1996-11-28

申请号：PCT/US1996007308

申请日：1996-05-21

Applicant: ERICSSON INC.

Inventor： ERICSSON INC. ,  KIM, Seung, K. ,  WAN, Yongbing

IPC: H04B07/005

CPC classification number: H04W52/10 ,  H04W52/18

Abstract: A portable radio having an improved open-loop power control scheme is disclosed. The portable radio includes a transmitter power controller connected to the portable radio's receiver and transmitter for controlling the power transmission level of the portable radio, resulting in reduced power consumption by the portable radio and extended battery life. In the power control scheme of the present invention, the transmitter power controller estimates the signal strength and quality of the down-link signal by determining a threshold adjustment parameter for the received signal. Thus, this invention eliminates false power adjustment caused by the interfering signals when RSSI (Received Signal Strength Level) is used as a means to estimate transmitter power level. The threshold adjustment parameter is an adjustment parameter used in adjusting the received signal to produce a degraded signal having a predetermined signal quality, and is determined by incrementally adjusting the received signal until the degraded signal is determined to have the predetermined signal quality. The received signal is adjusted in one embodiment by adding noise to the received signal and in another embodiment by adjusting the bias voltage of an RF amplifier and IF amplifier in the receiver. The threshold adjustment parameter corresponds to the signal strength and quality of the received signal, and a look-up table approach is used in determining and adjusting the power transmission level for the portable radio.

Abstract translation: 公开了一种具有改进的开环功率控制方案的便携式无线电设备。 便携式无线电装置包括连接到便携式无线电接收机和发射机的发射机功率控制器，用于控制便携式无线电装置的功率传输水平，导致便携式无线电装置的功耗降低并延长电池寿命。 在本发明的功率控制方案中，发射机功率控制器通过确定接收信号的阈值调整参数来估计下行链路信号的信号强度和质量。 因此，当使用RSSI（接收信号强度水平）作为估计发射机功率电平的手段时，本发明消除了由干扰信号引起的伪功率调整。 阈值调整参数是用于调整接收信号以产生具有预定信号质量的劣化信号的调整参数，并且通过递增地调整接收信号来确定，直到劣化信号被确定为具有预定信号质量。 在一个实施例中，通过将噪声附加到接收信号来调节接收信号，并且在另一个实施例中通过调整接收机中的RF放大器和IF放大器的偏置电压进行调整。 阈值调整参数对应于接收信号的信号强度和质量，并且使用查找表方法来确定和调整便携式无线电装置的功率传输电平。

公开(公告)号：WO1996037051A1

公开(公告)日：1996-11-21

申请号：PCT/US1996006983

申请日：1996-05-16

Applicant: ERICSSON INC.

Inventor： ERICSSON INC. ,  PRIEST, Mark, D.

IPC: H04B01/16

CPC classification number: H04W52/0238 ,  Y02D70/00

Abstract: A battery-powered portable radio conserves battery power while the radio monitors messages transmitted over a radio channel, e.g., a radio control channel. Message processing circuitry processes a detected message and stores that message in memory. Before processing a subsequently detected message, the subsequent message is compared with the stored message. If they match, the radio microprocessor ignores that subsequent message as a redundant message to conserve battery power.

Abstract translation: 电池供电的便携式无线电节省电池电力，而无线电监测通过无线电信道（例如无线电控制信道）发送的消息。 消息处理电路处理检测到的消息并将该消息存储在存储器中。 在处理随后检测到的消息之前，将后续消息与存储的消息进行比较。 如果它们匹配，则无线电微处理器将该后续消息忽略为冗余消息以节省电池电量。

公开(公告)号：WO1996031074A1

公开(公告)日：1996-10-03

申请号：PCT/US1996001690

申请日：1996-03-28

Applicant: ERICSSON INC.

Inventor： ERICSSON INC. ,  KENT, James, S.

IPC: H04Q07/28

CPC classification number: H04W84/08 ,  H04W4/10 ,  H04W76/45

Abstract: In an extended overall radio communications network, one or more dedicated Network Interface Modules (NIMs) are provided in each multisite trunked communications systems to permit the interconnection and communication between plural, multisite systems. A remote multisite system appears through the local NIM as just another site interface to the local multisite system. Basic and advanced dispatch console functions are effected over the extended network via the NIMs in a manner that is transparent to the console operator.

Abstract translation: 在扩展的整体无线电通信网络中，在每个多站集群通信系统中提供一个或多个专用网络接口模块（NIM），以允许多个多站点系统之间的互连和通信。 远程多站点系统通过本地NIM显示为本地多站点系统的另一个站点接口。 基本和高级调度控制台功能通过NIM以扩展网络的方式通过对控制台操作员透明的方式进行。

公开(公告)号：WO1996026578A1

公开(公告)日：1996-08-29

申请号：PCT/US1996002498

申请日：1996-02-23

Applicant: ERICSSON INC.

Inventor： ERICSSON INC. ,  DENT, Paul, W.

IPC: H04B07/08

CPC classification number: H04W84/025 ,  G08B3/1008 ,  H01Q1/246 ,  H01Q21/08 ,  H01Q21/28 ,  H04B1/126 ,  H04B7/0837 ,  H04B7/0851 ,  H04B7/10 ,  H04B7/18513 ,  H04B7/18515 ,  H04B7/18532 ,  H04B7/18567 ,  H04B7/2041 ,  H04L1/007 ,  H04L1/06 ,  H04L25/0204 ,  H04L25/021 ,  H04L25/03203 ,  H04L25/0328 ,  H04L25/03299 ,  H04L25/03331 ,  H04W16/02 ,  H04W16/14 ,  H04W74/08 ,  H04W84/042 ,  H04W84/06 ,  H04W88/022 ,  H04W88/185

Abstract: Methods and systems for processing signals in radio communication systems are described which include processes for handling co-channel interference while reducing the number of Viterbi states being processed. A spatial analogy to the Viterbi MLSE process is provided. Both the uplink and downlink cases are described.

Abstract translation: 描述了用于在无线电通信系统中处理信号的方法和系统，其包括处理同信道干扰的过程，同时减少被处理的维特比状态的数量。 提供了与维特比MLSE过程的空间类比。 描述了上行链路和下行链路情况。

公开(公告)号：WO1996023360A2

公开(公告)日：1996-08-01

申请号：PCT/US1996001143

申请日：1996-01-22

Applicant: ERICSSON INC.

Inventor： ERICSSON INC. ,  RAMESH, Rajaram ,  MOLNAR, Barbara, D.

IPC: H03M13/12

CPC classification number: H04L1/0069 ,  H03M13/23 ,  H04L1/0041

Abstract: A digital communication system having a punctured convolutional coding system and method. The digital communication system includes a coder for coding a digital input to be transmitted from a transmitter and a decoder for decoding the coded input received at the receiver. The coder includes a convolutional coding circuit of rate k/n for outputting a convolutional coded output and a puncturing circuit for puncturing the convolutionally coded output to achieve a punctured code rate of z/q, where z = gamma k. The puncturing circuit punctures the convolutional coded output according to a deleting pattern chosen to have a bit length of L = p gamma n, where p >/= 2. The puncturing circuit outputs a punctured output at punctured code rate of z/q and the punctured output is transmitted to the receiver. The receiver decodes the transmitted punctured output and outputs a decoded output.

Abstract translation: 一种具有穿孔卷积编码系统和方法的数字通信系统。 数字通信系统包括：编码器，用于对从发射机发送的数字输入进行编码;解码器，用于解码在接收机处接收到的编码输入。 编码器包括用于输出卷积编码输出的速率k / n的卷积编码电路和用于对卷积编码输出进行删截的删截电路，以实现z / q的打孔码率，其中z =γk。 打孔电路根据选择为具有L = p×n的位长度的删除模式对卷积编码输出进行穿孔，其中p> / = 2。删截电路以穿孔码率z / q输出穿孔输出，并且 穿孔输出被发送到接收器。 接收机对发射的穿孔输出进行解码并输出解码输出。

公开(公告)号：WO1996022651A1

公开(公告)日：1996-07-25

申请号：PCT/US1996000790

申请日：1996-01-19

Applicant: ERICSSON INC.

Inventor： ERICSSON INC. ,  RASMUSSON, Jim, A., J. ,  SÖLVE, Torbjörn, W. ,  ZAK, Robert, A.

IPC: H04M09/08

CPC classification number: H04M9/085

Abstract: A method and apparatus for reducing the echo in a hands-free digital cellular communication system are presented. Acting upon speech signals being presented in the downlink, uplink speech frames generated by the hands-free communication device are attenuated to prevent the downlink speech signals from being transmitted at full volume back on the uplink as an echo. Added to the attenuated uplink speech frame is a noise frame generated by the hands-free communication device, which provides a consistent level of background noise to the person at the other end of the call. The noise codeword is further randomly ordered to prevent any modulative effects from the process.

Abstract translation: 提出了一种用于减少免提数字蜂窝通信系统中的回波的方法和装置。 根据在下行链路中呈现的语音信号，由免提通信装置生成的上行语音帧被衰减，以防止下行语音信号作为回波在上行链路上以全卷发送。 增加到衰减的上行语音帧是由免提通信设备产生的噪声帧，其为呼叫的另一端的人提供一致的背景噪声水平。 噪声码字被进一步随机排序以防止来自该过程的任何调制效应。