公开(公告)号：WO1995020844A1

公开(公告)日：1995-08-03

申请号：PCT/US1995000904

申请日：1995-01-23

Applicant: MOTOROLA INC.

Inventor： MOTOROLA INC. ,  FULGHUM, Tracy, L. ,  CADD, Jimmy, W.

IPC: H04B01/69

CPC classification number: H04B7/2621 ,  H04B1/713 ,  H04J13/0074 ,  H04W24/00 ,  H04W28/18 ,  H04W72/02

Abstract: A radio communication system (10) operates over a sequence of communication channels using a synchronized channel hopping protocol. A first communication device (16) is provided which is capable of communicating over the sequence of communication channels using channel hopping, and which has an operating communication channel. A second communication device (13) is provided, which is capable of determining the operating communication channel and channel hopping parameters of the first communication device (16). The second communication device (13) can communicate over the sequence of communication channels using channel hopping synchronized with the channel hopping of the first communication device (16), while selecting an operating communication channel different from the operating communication channel of the first communication device (16) when both communication devices (13, 16) operate simultaneously.

Abstract translation: 无线电通信系统（10）使用同步信道跳频协议在一系列通信信道上操作。 提供第一通信设备（16），其能够通过使用信道跳频的通信信道序列进行通信，并且具有操作通信信道。 提供第二通信设备（13），其能够确定第一通信设备（16）的操作通信信道和信道跳频参数。 第二通信设备（13）可以在选择与第一通信设备的操作通信信道不同的操作通信信道的同时，使用与第一通信设备（16）的信道跳频同步的信道跳频，在通信信道序列上进行通信（ 16）当两个通信设备（13,16）同时操作时。

公开(公告)号：WO1994021064A1

公开(公告)日：1994-09-15

申请号：PCT/US1994001628

申请日：1994-02-17

Applicant: MOTOROLA INC.

Inventor： MOTOROLA INC. ,  FULGHUM, Tracy, L. ,  LEE, Edward, K., B. ,  CADD, Jimmy, W.

IPC: H04K01/00

CPC classification number: H04J13/16

Abstract: A code division multiple access (CDMA) communication system (10) for reuse of available spreading codes includes a first communication device (100) and a second communication device (106). The first and second communication devices (100, 106) are capable of identifying spreading codes and operating frequencies that are optimum for their respective radios. The identity of the optimum spreading code and the frequency of the optimum frequency is communicated from one communication device (100) to another (106), hence allowing the two devices to communicate with each other using their respective optimum codes and frequencies. These codes and frequencies may be periodically updated to provide reusability of codes. By dynamically updating codes and frequencies without the use of a central station, the efficiency and reusability of codes in the CDMA system (10) is significantly enhanced.

Abstract translation: 用于重用可用扩展码的码分多址（CDMA）通信系统（10）包括第一通信设备（100）和第二通信设备（106）。 第一和第二通信设备（100,106）能够识别对于它们各自的无线电是最佳的扩展码和工作频率。 最佳扩展码的标识和最佳频率的频率从一个通信设备（100）传送到另一个（106），从而允许两个设备使用它们各自的最佳代码和频率彼此通信。 可以周期性地更新这些代码和频率以提供代码的可重用性。 通过在不使用中心站的情况下动态地更新代码和频率，CDMA系统（10）中的代码的效率和可重用性显着增强。

公开(公告)号：EP0741932A1

公开(公告)日：1996-11-13

申请号：EP95911573.0

申请日：1995-01-23

Applicant: MOTOROLA, INC.

Inventor： FULGHUM, Tracy, L. ,  CADD, Jimmy, W.

IPC: H04B7 ,  H04J13 ,  H04L12

CPC classification number: H04B7/2621 ,  H04B1/713 ,  H04J13/0074 ,  H04W24/00 ,  H04W28/18 ,  H04W72/02

Abstract: A radio communication system (10) operates over a sequence of communication channels using a synchronized channel hopping protocol. A first communication device (16) is provided which is capable of communicating over the sequence of communication channels using channel hopping, and which has an operating communication channel. A second communication device (13) is provided, which is capable of determining the operating communication channel and channel hopping parameters of the first communication device (16). The second communication device (13) can communicate over the sequence of communication channels using channel hopping synchronized with the channel hopping of the first communication device (16), while selecting an operating communication channel different from the operating communication channel of the first communication device (16) when both communication devices (13, 16) operate simultaneously.

公开(公告)号：EP0754375A1

公开(公告)日：1997-01-22

申请号：EP95916203.0

申请日：1995-04-04

Applicant: MOTOROLA, INC.

Inventor： CADD, Jimmy, W. ,  FULGHUM, Tracy, L.

IPC: H04L12

CPC classification number: H04L1/188 ,  H04L12/413 ,  H04W24/00 ,  H04W76/10

Abstract: A radio communication system (10) has multiple transceivers (12, 14) attempting to initiate communications on a shared communication channel substantially simultaneously. A method for detecting and handling potential channel use collisions is provided for an initiating transceiver (12, 14). The transceiver (12, 14) transmits on the communication channel, a message including an identifying code word. The transceiver (12, 14) then receives data in a predetermined slot of the communication channel, and compares this data with the code word transmitted. A channel use collision is detected when the data received is not equal to the code word transmitted.

公开(公告)号：WO1996004731A1

公开(公告)日：1996-02-15

申请号：PCT/US1995009164

申请日：1995-07-21

Applicant: MOTOROLA INC.

Inventor： MOTOROLA INC. ,  FULGHUM, Tracy, L. ,  CADD, Jimmy, W.

IPC: H04J13/06

CPC classification number: H04W72/02 ,  H04B1/713 ,  H04J13/00 ,  H04W24/00 ,  H04W28/26

Abstract: A method and apparatus is provided for operating a radio system(100) on shared communication channels. The system (100) has a sequence of communication channels (205), including a reservation channel, and a channel hopping protocol for operating on the sequence (205). A hop period is defined for the channel hopping protocol. The reservation channel is monitored for at least the channel hop period to find an open communication slot indicated by the absence of a reservation signal (320, 325, 330). Communication is then established within the open slot, and channel hopping occurs through the sequence of communication channels in the open slot (345, 350). The slot is preserved by transmitting a reservation signal on the reservation channel, when operating on the reservation channel (355, 360).

Abstract translation: 提供了一种用于在共享通信信道上操作无线电系统（100）的方法和装置。 系统（100）具有包括预留信道的通信信道序列（205）和用于在序列（205）上操作的信道跳频协议。 为跳频协议定义跳跃周期。 监视预约信道至少频道跳跃周期以找到由不存在预约信号（320,325,330）指示的开放通信时隙。 然后在开放时隙内建立通信，并且通过开放时隙（345,350）中的通信信道序列发生信道跳频。 当在预约信道上操作时，通过在预留信道上发送预约信号来保留时隙（355,360）。

公开(公告)号：WO1995027338A1

公开(公告)日：1995-10-12

申请号：PCT/US1995004207

申请日：1995-04-04

Applicant: MOTOROLA INC.

Inventor： MOTOROLA INC. ,  CADD, Jimmy, W. ,  FULGHUM, Tracy, L.

IPC: H04B01/00

CPC classification number: H04L1/188 ,  H04L12/413 ,  H04W24/00 ,  H04W76/10

Abstract: A radio communication system (10) has multiple transceivers (12, 14) attempting to initiate communications on a shared communication channel substantially simultaneously. A method for detecting and handling potential channel use collisions is provided for an initiating transceiver (12, 14). The transceiver (12, 14) transmits on the communication channel a message including an identifying code word. The transceiver (12, 14) then receives data in a predetermined slot of the communication channel and compares this data with the code word transmitted. A channel use collision is detected when the data received is not equal to the code word transmitted.

Abstract translation: 无线电通信系统（10）具有尝试在基本上同时在共享通信信道上发起通信的多个收发机（12,14）。 提供了一种用于检测和处理潜在信道使用冲突的方法，用于起始收发信机（12,14）。 收发器（12,14）在通信信道上发送包括识别码字的消息。 然后，收发器（12,14）在通信信道的预定时隙中接收数据，并将该数据与发送的码字进行比较。 当接收到的数据不等于发送的码字时，检测到信道使用冲突。

公开(公告)号：EP0741932B1

公开(公告)日：2005-05-25

申请号：EP95911573.4

申请日：1995-01-23

Applicant: MOTOROLA, INC.

Inventor： FULGHUM, Tracy, L. ,  CADD, Jimmy, W.

IPC: H04B1/69 ,  H04B7/26

CPC classification number: H04B7/2621 ,  H04B1/713 ,  H04J13/0074 ,  H04W24/00 ,  H04W28/18 ,  H04W72/02

Abstract: A radio communication system (10) operates over a sequence of communication channels using a synchronized channel hopping protocol. A first communication device (16) is provided which is capable of communicating over the sequence of communication channels using channel hopping, and which has an operating communication channel. A second communication device (13) is provided, which is capable of determining the operating communication channel and channel hopping parameters of the first communication device (16). The second communication device (13) can communicate over the sequence of communication channels using channel hopping synchronized with the channel hopping of the first communication device (16), while selecting an operating communication channel different from the operating communication channel of the first communication device (16) when both communication devices (13, 16) operate simultaneously.

公开(公告)号：EP0774182A1

公开(公告)日：1997-05-21

申请号：EP95928096.0

申请日：1995-07-21

Applicant: MOTOROLA, INC.

Inventor： FULGHUM, Tracy, L. ,  CADD, Jimmy, W.

IPC: H04B1 ,  H04J13 ,  H04W72

CPC classification number: H04W72/02 ,  H04B1/713 ,  H04J13/00 ,  H04W24/00 ,  H04W28/26

Abstract: A method and apparatus is provided for operating a radio system(100) on shared communication channels. The system (100) has a sequence of communication channels (205), including a reservation channel, and a channel hopping protocol for operating on the sequence (205). A hop period is defined for the channel hopping protocol. The reservation channel is monitored for at least the channel hop period to find an open communication slot indicated by the absence of a reservation signal (320, 325, 330). Communication is then established within the open slot, and channel hopping occurs through the sequence of communication channels in the open slot (345, 350). The slot is preserved by transmitting a reservation signal on the reservation channel, when operating on the reservation channel (355, 360).