公开(公告)号：WO1998015140A1

公开(公告)日：1998-04-09

申请号：PCT/US1997012604

申请日：1997-07-16

Applicant: MOTOROLA INC.

Inventor： MOTOROLA INC. ,  DORENBOSCH, Jheroen, P. ,  SAWAYA, Samir, A.

IPC: H04Q07/00

CPC classification number: H04W84/025 ,  H04L1/1803 ,  H04L2001/125

Abstract: A method and apparatus includes in a sending transceiver (225) a transmitter (206) for sending (702) a message to a receiving transceiver (122), a receiver (207) for awaiting (704) an acknowledgement of the message from the receiving transceiver within a predetermined time after sending the message, and a processing system (210) coupled to the transmitter and coupled to the receiver for transmitting (706) a command (418) to the receiving transceiver to request a repeat transmission of the acknowledgement when the acknowledgement has not been received by the sending transceiver within the predetermined time.

Abstract translation: 一种方法和装置包括在发送收发器（225）中，用于向接收收发器（122）发送（702）消息的发送器（206），用于等待（704）来自所述接收器的所述消息的确认的接收器（207） 收发器在发送消息之后的预定时间内;以及处理系统（210），其耦合到所述发射机并且耦合到所述接收机，用于向所述接收收发器发送（706）命令（418）以请求所述确认的重复发送， 发送收发器在预定时间内没有收到确认。

公开(公告)号：WO1998020619A1

公开(公告)日：1998-05-14

申请号：PCT/US1997019865

申请日：1997-10-31

Applicant: MOTOROLA INC.

Inventor： MOTOROLA INC. ,  SOUISSI, Slim ,  SAWAYA, Samir, A. ,  DORENBOSCH, Jheroen, P. ,  BRIANCON, Alain, Charles, Louis ,  CANNON, Gregory, Lewis

IPC: H04B01/10

CPC classification number: H04H20/67 ,  H04L1/242 ,  H04W84/022 ,  H04W88/185

Abstract: Apparatus and method for dynamically selecting a transmitter for directed message delivery in a messaging system (100) including plural transmitters (107-111) operating in a simulcast or non-simulcast mode. A communication system (1100) dynamically selects transmitters (1115) by sending transmission signals, receiving the transmission signals at a PMU (1105), calculating signal strengths of the transmission signals, transmitting a signal indicative of the signal strengths, receiving the signal and determining therefrom carrier-to-interference (C/I) values indicative of relative strengths of the transmission signals at a controller (1110), and delivering a message with a selected transmitter (1115) associated with a lowest C/I value that is chosen from the C/I values and that exceeds a C/I threshold value.

Abstract translation: 一种用于在消息收发系统（100）中动态地选择用于定向消息传送的发射机的装置和方法，包括以同步或非联播模式操作的多个发射机（107-111）。 通信系统（1100）通过发送发送信号动态地选择发射机（1115），在PMU（1105）处接收发送信号，计算发送信号的信号强度，发送表示信号强度的信号，接收信号和确定 从而指示控制器（1110）处的传输信号的相对强度的载波对干扰（C / I）值，以及递送与所选择的发射机（1115）的消息，所述发射机与最低C / I值相关联，所述最低C / I值选自 C / I值超过C / I阈值。