公开(公告)号：EP0532499B1

公开(公告)日：1998-09-09

申请号：EP91904535.1

申请日：1991-02-06

Applicant: MOTOROLA, INC.

Inventor： CHANROO, Keith, A.

IPC: H04Q7/22

CPC classification number: H04W16/12 ,  H04W16/02

Abstract: A three dimensional cellular communication system (Fig. 1) comprising a plurality of cell (202-214) arranged in a multi-level environment (Fig. 2) to reduce interference and improve frequency reuse in both horizontal (X-Y) and vertical (Z) directions by offsetting cells stacked on different levels of the multi-level environment.

公开(公告)号：EP0826283A1

公开(公告)日：1998-03-04

申请号：EP96911409.0

申请日：1996-03-25

Applicant: MOTOROLA, INC.

Inventor： CHANROO, Keith, A. ,  DAVIS, Walter, Lee

IPC: H04M11

CPC classification number: H04M11/022

Abstract: A selective call system (100) has a plurality of base sites (120-124) for communicating with a plurality of selective call receivers (108) with acknowledge-back capability. A base site transmitter (210) transmits signals encoded with a stored location identifier (132), a base site receiver (241) receives acknowledge-back signals in response to the transmitted signals and a controller (206) determines when a selective call receiver (108) is authorized to receive location specific information (134). The base site transmitted (210) downloads the location specific information (134) to the selective call receiver (108) in response to verifying that the selective call receiver (108) is authorized. The selective call receiver (108) receives the signals having the location identifier (132) and the downloaded location specific information (134). A decoder/controller (306) compares the location identifier (132) received with the stored location identifier (108) of selective call receiver (108) to determine when the selective call receiver (108) has roamed to the new service area and stores the new location identifier (132). An acknowledge-back transmitter (334) transmits the new location identifier (132) to a home service area for enabling paging information to be routed from the home service area to the selective call receiver (108) at the new service area.

公开(公告)号：EP0716789A1

公开(公告)日：1996-06-19

申请号：EP94925928.0

申请日：1994-08-18

Applicant: MOTOROLA, INC.

Inventor： CHANROO, Keith, A. ,  MERCHANT, Zaffer, S. ,  LI, Xiaojun

IPC: H04J1 ,  H04L27 ,  H04W88

CPC classification number: H04W88/187

Abstract: A selective call base station (100) for receiving a signal comprising a plurality of communication signals has an Analog-to-Digital (A/D) converter (220) for digitizing the signal. A memory (204) for storing the signal as a plurality of digitized bits (502-518), and a Digital Signal Processor (DSP) (218) for converting each of the plurality of digitized bits (502-518) into a frequency domain signal (Fig. 6) that has a plurality of frequency samples. The memory (204) stores the plurality of frequency samples corresponding to each of the plurality of digitized bits (502-518). A decoder (206, 218) decodes the plurality of communication signals from the plurality of frequency samples. The decoder (206, 218) further includes a generator (718) for generating a window (902) for measuring energy of at least one frequency sample of the plurality of digitized bits (502-518) in each of the plurality of communication signals. A determinator (728) determines the at least one frequency sample of each of the plurality of communication signals having a maximum energy.

公开(公告)号：WO1996035289A1

公开(公告)日：1996-11-07

申请号：PCT/US1996004076

申请日：1996-03-25

Applicant: MOTOROLA INC.

Inventor： MOTOROLA INC. ,  CHANROO, Keith, A. ,  DAVIS, Walter, Lee

IPC: H04M11/00

CPC classification number: H04M11/022

Abstract: A selective call system (100) has a plurality of base sites (120-124) for communicating with a plurality of selective call receivers (108) with acknowledge-back capability. A base site transmitter (210) transmits signals encoded with a stored location identifier (132), a base site receiver (241) receives acknowledge-back signals in response to the transmitted signals and a controller (206) determines when a selective call receiver (108) is authorized to receive location specific information (134). The base site transmitted (210) downloads the location specific information (134) to the selective call receiver (108) in response to verifying that the selective call receiver (108) is authorized. The selective call receiver (108) receives the signals having the location identifier (132) and the downloaded location specific information (134). A decoder/controller (306) compares the location identifier (132) received with the stored location identifier (108) of selective call receiver (108) to determine when the selective call receiver (108) has roamed to the new service area and stores the new location identifier (132). An acknowledge-back transmitter (334) transmits the new location identifier (132) to a home service area for enabling paging information to be routed from the home service area to the selective call receiver (108) at the new service area.

Abstract translation: 选择呼叫系统（100）具有多个基站（120-124），用于与具有应答能力的多个选呼接收机（108）进行通信。 基地址发送器（210）发送用存储的位置标识符（132）编码的信号，基站接收器（241）响应于所发送的信号接收确认信号，并且控制器（206）确定选择呼叫接收器 108）被授权接收位置特定信息（134）。 发送的基站（210）响应于验证选呼接收机（108）被授权，将位置特定信息（134）下载到选呼接收机（108）。 选呼接收机（108）接收具有位置标识符（132）和下载位置特定信息（134）的信号。 解码器/控制器（306）将接收到的位置标识符（132）与选择呼叫接收器（108）的所存储的位置标识符（108）进行比较，以确定选择呼叫接收器（108）何时漫游到新的服务区域并且存储 新的位置标识符（132）。 确认发送器（334）将新的位置标识符（132）发送到家庭服务区域，以使得能够在新服务区域从寻呼服务区域路由到选呼接收机（108）的寻呼信息。

公开(公告)号：WO1995006364A1

公开(公告)日：1995-03-02

申请号：PCT/US1994009312

申请日：1994-08-18

Applicant: MOTOROLA, INC.

Inventor： MOTOROLA, INC. ,  CHANROO, Keith, A. ,  MERCHANT, Zaffer, S. ,  LI, Xiaojun

IPC: H04B07/00

CPC classification number: H04W88/187

Abstract: A selective call base station (100) for receiving a signal comprising a plurality of communication signals has an Analog-to-Digital (A/D) converter (220) for digitizing the signal. A memory (204) for storing the signal as a plurality of digitized bits (502-518), and a Digital Signal Processor (DSP) (218) for converting each of the plurality of digitized bits (502-518) into a frequency domain signal (Fig. 6) that has a plurality of frequency samples. The memory (204) stores the plurality of frequency samples corresponding to each of the plurality of digitized bits (502-518). A decoder (206, 218) decodes the plurality of communication signals from the plurality of frequency samples. The decoder (206, 218) further includes a generator (718) for generating a window (902) for measuring energy of at least one frequency sample of the plurality of digitized bits (502-518) in each of the plurality of communication signals. A determinator (728) determines the at least one frequency sample of each of the plurality of communication signals having a maximum energy.

Abstract translation: 用于接收包括多个通信信号的信号的选择性呼叫基站（100）具有用于对信号进行数字化的模拟数字（A / D）转换器（220）。 用于将信号存储为多个数字化位（502-518）的存储器（204）和用于将多个数字位（502-518）中的每一个转换为频域的数字信号处理器（DSP）（218） 信号（图6），其具有多个频率样本。 存储器（204）存储对应于多个数字化位（502-518）中的每一个的多个频率采样。 解码器（206,218）从多个频率采样中解码多个通信信号。 解码器（206,218）还包括用于产生用于测量多个通信信号中的每一个中的多个数字化比特（502-518）中的至少一个频率样本的能量的窗口（902）的发生器（718）。 确定器（728）确定具有最大能量的多个通信信号中的每一个的至少一个频率采样。

公开(公告)号：WO1991016794A1

公开(公告)日：1991-10-31

申请号：PCT/US1991000793

申请日：1991-02-06

Applicant: MOTOROLA, INC.

Inventor： MOTOROLA, INC. ,  CHANROO, Keith, A.

IPC: H04Q07/00

CPC classification number: H04W16/12 ,  H04W16/02

Abstract: A three dimensional cellular communication system (Fig. 1) comprising a plurality of cell (202-214) arranged in a multi-level environment (Fig. 2) to reduce interference and improve frequency reuse in both horizontal (X-Y) and vertical (Z) directions by offsetting cells stacked on different levels of the multi-level environment.

公开(公告)号：EP0826283B1

公开(公告)日：2005-02-23

申请号：EP96911409.9

申请日：1996-03-25

Applicant: MOTOROLA INC.

Inventor： CHANROO, Keith, A. ,  DAVIS, Walter, Lee

IPC: H04M11/00

CPC classification number: H04M11/022

Abstract: A selective call system (100) has a plurality of base sites (120-124) for communicating with a plurality of selective call receivers (108) with acknowledge-back capability. A base site transmitter (210) transmits signals encoded with a stored location identifier (132), a base site receiver (241) receives acknowledge-back signals in response to the transmitted signals and a controller (206) determines when a selective call receiver (108) is authorized to receive location specific information (134). The base site transmitted (210) downloads the location specific information (134) to the selective call receiver (108) in response to verifying that the selective call receiver (108) is authorized. The selective call receiver (108) receives the signals having the location identifier (132) and the downloaded location specific information (134). A decoder/controller (306) compares the location identifier (132) received with the stored location identifier (108) of selective call receiver (108) to determine when the selective call receiver (108) has roamed to the new service area and stores the new location identifier (132). An acknowledge-back transmitter (334) transmits the new location identifier (132) to a home service area for enabling paging information to be routed from the home service area to the selective call receiver (108) at the new service area.

公开(公告)号：EP0532499A1

公开(公告)日：1993-03-24

申请号：EP91904535.0

申请日：1991-02-06

Applicant: MOTOROLA, INC.

Inventor： CHANROO, Keith, A.

IPC: H04W16

CPC classification number: H04W16/12 ,  H04W16/02

Abstract: Système de communication cellulaire tridimensionnel (Fig. 1) comportant une pluralité de cellules (202-214) disposées dans une structure à plusieurs niveaux (Fig. 2) afin de réduire les perturbations et d'améliorer la réutilisation des fréquences dans les sens horizontal (XY) et vertical (Z) par un décalage des cellules empilées sur les niveaux différents de la structure à plusieurs niveaux.