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1. 发明申请

WO1998026619A2 CIRCUITRY AND METHOD FOR IMPROVED SIGNAL RECEPTION ACKNOWLEDGMENT IN A RADIO COMMUNICATION SYSTEM 审中-公开
标题翻译：无线电通信系统中改善信号接收确认的电路和方法
公开(公告)号：WO1998026619A2
公开(公告)日：1998-06-18
申请号：PCT/US1997022465
申请日：1997-12-09
申请人： ERICSSON INC.
发明人： ERICSSON INC. , WANG, Eric, Yi-Pin , BALACHANDRAN, Kumar , HASSAN, Amer , CHENNAKESHU, Sandeep
IPC分类号： H04Q07/00
CPC分类号： H04W68/02 , H04B7/18532 , H04L1/0009 , H04L1/1692 , H04L1/1867
摘要： A method and associated circuitry for initiating communication between a network station and a user terminal of a radiotelephonic communication system, such as a satellite-cellular communication system. When communication is to be initiated, a paging signal is transmitted by a network station to the user terminal. When the user terminal detects the paging signal, an acknowledgment signal is generated by the user terminal and encoded to increase the margin of the acknowledgment signal. Upon reception, the acknowledgment signal is correlated using a multiplicity of correlators. An increased margin acknowledgment signal acknowledging reception of the paging signal is transmitted to facilitate communication of the acknowledgment signal back to the network station.
摘要翻译：一种用于发起无线电通信系统（诸如卫星蜂窝通信系统）的网络站和用户终端之间的通信的方法和相关电路。当要发起通信时，网络站向用户终端发送寻呼信号。当用户终端检测到寻呼信号时，用户终端产生一个确认信号并进行编码以增加确认信号的余量。在接收时，确认信号使用多个相关器进行相关。发送确认寻呼信号的接收的增加的余量确认信号以促进确认信号的通信回到网络站。

2. 发明申请

WO1998007247A1 DECODER UTILIZING SOFT INFORMATION OUTPUT TO MINIMIZE ERROR RATES 审中-公开
标题翻译：解码器使用软信息输出以最小化错误率
公开(公告)号：WO1998007247A1
公开(公告)日：1998-02-19
申请号：PCT/US1997014260
申请日：1997-08-13
申请人： ERICSSON INC.
发明人： ERICSSON INC. , HASSAN, Amer, A. , KHAYRALLAH, Ali, S. , WANG, Yi-Pin, Eric , BALACHANDRAN, Kumar , RAMESH, Rajaram
IPC分类号： H04L01/00
CPC分类号： H04L25/067 , H03M13/09 , H03M13/13 , H03M13/27 , H03M13/2906 , H03M13/2933 , H03M13/3738 , H03M13/456 , H03M13/6306 , H03M13/6331 , H04L1/0065 , H04L1/0071 , H04L1/1809 , H04L1/1816
摘要： A coding system is disclosed wherein the receive side includes a decoder capable of producing, in addition to the hard information decoded output, either or both symbol and/or bit soft information values. For a certain information bit position, a value proportional to the joint probability that a received symbol and the set of all hypothesized transmitted codewords led to the estimated or detected hard information output is calculated. The calculated probabilities with respect to plural codewords having a zero in that certain information bit position are compared to the calculated probabilities with respect to the plural codewords having a one in that certain information bit position. The result of the comparison provides an indication of whether the hard information output in that same information bit position is more likely a one or a zero. The output soft information values are further processed in comparison to a preset threshold, with instances exceeding the threshold triggering block rejections and/or retransmissions.
摘要翻译：公开了一种编码系统，其中接收端包括能够产生除硬信息解码输出之外的符号和/或位软信息值之一或两者的解码器。对于某个信息位位置，计算与接收符号和所有假设的发送码字的集合导致估计或检测到的硬信息输出的联合概率成比例的值。将具有该特定信息位位置的零的多个码字的计算概率与该特定信息位位置中具有一个的多个码字的计算概率进行比较。比较结果提供了在该相同信息位位置中的硬信息输出是否更可能是一个或零的指示。与预设阈值相比，输出软信息值进一步处理，其中实例超过阈值触发块拒绝和/或重传。

3. 发明申请

WO1998025350A1 SHORTENED FIRE CODE ERROR-TRAPPING DECODING METHOD AND APPARATUS 审中-公开
标题翻译：更新的消防代码错误解码解码方法和设备
公开(公告)号：WO1998025350A1
公开(公告)日：1998-06-11
申请号：PCT/US1997022409
申请日：1997-12-03
申请人： ERICSSON INC.
发明人： ERICSSON INC. , RAMESH, Rajaram , BALACHANDRAN, Kumar
IPC分类号： H03M13/00
CPC分类号： H03M13/618 , H03M13/175 , H03M13/6502
摘要： An error-trapping decoder (10) is provided that performs right cyclic shifts of a received shortened codeword in a decode shift register (12). Consequently, the error burst portion of the received codeword is encountered in the register (12) within the length of the shortened code. In other words, the number of right cyclic shifts required by the shift register (12) to encounter the error burst portion of the received word is on the order of the length of the shortened word.
摘要翻译：提供一种错误捕获解码器（10），其在解码移位寄存器（12）中执行接收到的缩短的码字的循环移位。因此，在缩短代码的长度内，在寄存器（12）中遇到接收到的码字的错误突发部分。换句话说，移位寄存器（12）所需的遇到接收字的错误突发部分的正确循环移位的数目是缩短字长度的数量级。

4. 发明申请

WO1997037508A1 APPARATUS AND METHOD FOR DERIVING A RANDOM REFERENCE NUMBER FROM PAGING AND ORIGINATING SIGNALS 审中-公开
标题翻译：用于从寻呼和起始信号中获取随机参考数字的装置和方法
公开(公告)号：WO1997037508A1
公开(公告)日：1997-10-09
申请号：PCT/US1997005130
申请日：1997-03-28
申请人： ERICSSON INC.
发明人： ERICSSON INC. , BALACHANDRAN, Kumar , WANG, Yi-Pin, Eric , MASSINGILL, Larry, William
IPC分类号： H04Q07/38
CPC分类号： H04B7/18567 , H04W12/06
摘要： A method and associated apparatus for deriving a random reference value from a paging signal transmitted between a network station and a user terminal of a radiotelephonic communication system, such as a satellite-cellular communication system. When communication is to be initiated, a paging signal is transmitted by a network station to a user terminal. When the user terminal detects the paging signal, a random reference value is derived from a portion of the paging signal, and response signal, responsive to the random reference value is generated and transmitted to the network station. When the network station receives the response signal, it compares it to an expected response value to authenticate the user terminal.
摘要翻译：一种用于从诸如卫星蜂窝通信系统的无线电通信系统的网络站和用户终端之间发送的寻呼信号中导出随机参考值的方法和相关联的装置。当要发起通信时，由网络台向用户终端发送寻呼信号。当用户终端检测到寻呼信号时，从寻呼信号的一部分导出随机参考值，并且产生响应于随机参考值的响应信号并将其发送到网络站。当网络站接收到响应信号时，将其与预期响应值进行比较，以验证用户终端。

5. 发明申请

WO1997037507A1 CIRCUITRY AND METHOD FOR INITIATING COMMUNICATION BETWEEN COMMUNICATION STATIONS OF A RADIO COMMUNICATION SYSTEM 审中-公开
标题翻译：无线电通信系统通信站之间通信的电路与方法
公开(公告)号：WO1997037507A1
公开(公告)日：1997-10-09
申请号：PCT/US1997004188
申请日：1997-03-28
申请人： ERICSSON INC.
发明人： ERICSSON INC. , CHENNAKESHU, Sandeep , WANG, Yi-Pin, Eric , BALACHANDRAN, Kumar
IPC分类号： H04Q07/38
CPC分类号： H04B7/18558 , H04W68/00 , H04W68/02 , H04W88/185
摘要： A method and associated circuitry for initiating communication between a network station and a user terminal of a radiotelephonic communication system, such as a satellite-cellular communication system. When communication is to be initiated, a paging signal is transmitted by a network station to the user terminal. When the user terminal detects the paging signal, an acknowledgment signal is generated by the user terminal and encoded to increase the margin of the acknowledgment signal. An increased-margin acknowledgment signal acknowledging reception of the paging signal is transmitted to facilitate communication of the acknowledgment signal back to the network station.
摘要翻译：一种用于发起无线电通信系统（诸如卫星蜂窝通信系统）的网络站和用户终端之间的通信的方法和相关电路。当要发起通信时，网络站向用户终端发送寻呼信号。当用户终端检测到寻呼信号时，用户终端产生一个确认信号并进行编码以增加确认信号的余量。发送确认寻呼信号的接收的增加的裕度确认信号以促进确认信号的通信回到网络站。

6. 发明申请

WO1998025360A1 SYSTEM AND METHOD FOR THE NON-SEQUENTIAL TRANSMISSION OF CONTROL SIGNALS WITHIN A SPEECH TRANSMISSION 审中-公开
标题翻译：用于语音传输中控制信号的非顺序传输的系统和方法
公开(公告)号：WO1998025360A1
公开(公告)日：1998-06-11
申请号：PCT/US1997021987
申请日：1997-12-01
申请人： ERICSSON INC.
发明人： ERICSSON INC. , BALACHANDRAN, Kumar , DENT, Paul
IPC分类号： H04B07/26
CPC分类号： H04L1/0068 , H04B7/18558
摘要： A telecommunications system and method for minimizing interruptions to voice transmissions due to the transmission of overriding control signals is disclosed. Since FACCH and other control signals replace or block-out speech data, the quality of speech transmissions deteriorates the longer the control transmission. Through modifications to the FACCH protocol, lengthy sequential FACCH or other control transmissions are divided into a plurality of discrete control segments, which are transmitted non-sequentially throughout a speech transmission, and queued at the receiving end. After receipt of all of the control segments, the original control message is reconstructed and forwarded for processing.
摘要翻译：公开了一种用于最小化由于覆盖控制信号的传输而导致的语音传输中断的电信系统和方法。由于FACCH和其他控制信号取代或阻塞语音数据，所以语音传输的质量越来越恶化控制传输。通过对FACCH协议的修改，冗长的顺序FACCH或其它控制传输被划分为多个离散控制段，其在整个语音传输中被非依次传输，并在接收端排队。在接收到所有控制段之后，原始控制消息被重建并转发用于处理。

7. 发明申请

WO1998016016A2 ERROR CORRECTION WITH TWO BLOCK CODES 审中-公开
标题翻译：有两个块代码的错误修正
公开(公告)号：WO1998016016A2
公开(公告)日：1998-04-16
申请号：PCT/US1997017436
申请日：1997-09-29
申请人： ERICSSON, INC.
发明人： ERICSSON, INC. , WANG, Yi-Pin, E. , CHENNAKESHU, Sandeep , DENT, Paul , BALACHANDRAN, Kumar
IPC分类号： H03M13/00
CPC分类号： H04L1/0057 , H03M13/00 , H03M13/1505 , H03M13/2927 , H03M13/293 , H03M13/2942 , H03M13/3769 , H03M13/6306 , H04L1/0071 , H04L1/06
摘要： A method for encoding and decoding the digital information sequence uses a combination of two block codes to simultaneously correct and detect errors. The reliability of the data decoded by an error correcting block code is checked by comparing the result of the decoding operation using either the raw parity or a corrected parity determined by using a second error correcting block code, as follows: the information sequence is encoded by a first stage of the encoder to produce an information code word including an information vector and a primary redundancy vector. The primary redundancy vector is encoded in a second stage of the encoder to obtain a redundancy code word. The information code word and redundancy code word are interleaved and transmitted to the receiver. At the receiver, the information code word and redundancy code word are decoded in a first stage of the decoder to obtain a first estimate of the information code word. The first estimate of the information code word is decoded in the second stage of the decoder to produce a second estimate of the information code word. The distance between the first and second estimates of the information code word is evaluated. If the distance is more than one, the received code word is erased. In another embodiment, the information sequence is repeated at the receiver. Each repetition includes a parity check resulting from the same code or from different codes. The received information vectors are selectively combined and then individually decoded using the individual parity vectors to generate multiple estimates of the information sequence. The estimates are then combined using hard or soft combining techniques.
摘要翻译：用于对数字信息序列进行编码和解码的方法使用两个块码的组合来同时校正和检测错误。通过使用原始奇偶校验或通过使用第二纠错块码确定的校正奇偶校验比较解码操作的结果来检查由纠错块码解码的数据的可靠性，如下所示：信息序列由编码器的第一级，用于产生包括信息矢量和主冗余矢量的信息码字。主冗余矢量被编码在编码器的第二级以获得冗余码字。信息码字和冗余码字被交织并发送到接收机。在接收机中，信息码字和冗余码字在解码器的第一级解码，以获得信息码字的第一估计。在解码器的第二级解码信息码字的第一估计，以产生信息码字的第二估计。评估信息码字的第一和第二估计之间的距离。如果距离大于1，则接收到的代码字被擦除。在另一个实施例中，在接收器处重复信息序列。每个重复都包括由相同代码或不同代码产生的奇偶校验。所接收的信息向量被选择性地组合，然后使用各个奇偶校验向量单独解码，以产生信息序列的多个估计。然后使用硬或软组合技术组合估计值。

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