公开(公告)号：WO1996035272A1

公开(公告)日：1996-11-07

申请号：PCT/US1996004077

申请日：1996-03-25

Applicant: MOTOROLA INC.

Inventor： MOTOROLA INC. ,  NANNI, Peter ,  FREISEN, Kevin

IPC: H04J03/00

CPC classification number: H04B17/104 ,  H04B17/11 ,  H04B17/12 ,  H04B17/14

Abstract: A method and apparatus to control frequency deviation of a portable transceiver (PT) (122) utilizing a time-division-duplex (TDD) protocol for communicating with a base transceiver (116). The base transceiver (116) transmits (708) a first signal having first deviation levels (706). The PT (122) receives (802) the first signal, measures (808, 810, 824) it to derive estimates of the first deviation levels, and stores (826) the estimates in a memory (322). The PT (122) generates (828) a second signal having second deviation levels (830) controlled by control signal values (323), samples (832) the second signal to derive a second received signal, and appraises (902) the second received signal to derive estimates of the second deviation levels (830). The PT (122) compares (906) corresponding estimates of the first and second frequency deviation levels (830) to derive adjusted control signal values (908) for controlling the second deviation levels (830) to approximate the first deviation levels (706), and thereafter controls (914) the second deviation levels (830) in accordance with the adjusted control signal values (908).

Abstract translation: 一种利用时分双工（TDD）协议来控制便携式收发器（PT）（122）的频偏的方法和装置，用于与基站收发信机（116）进行通信。 基站收发器（116）发送（708）具有第一偏差电平（706）的第一信号。 PT（122）接收（802）第一信号，测量（808,810,824）以导出第一偏差水平的估计，并将估计存储（826）到存储器（322）中。 PT（122）产生（828）具有由控制信号值（323）控制的第二偏移电平（830）的第二信号，第二信号的采样（832）以导出第二接收信号，并且评估（902）第二接收信号 信号以导出第二偏差水平的估计（830）。 PT（122）比较（906）第一和第二频率偏差水平（830）的相应估计值，以导出用于控制第二偏移水平（830）以近似第一偏差水平（706）的调整的控制信号值（908） 然后根据调整后的控制信号值（908）控制（914）第二偏差电平（830）。

公开(公告)号：EP0824806B1

公开(公告)日：2004-03-03

申请号：EP96911410.7

申请日：1996-03-25

Applicant: MOTOROLA, INC.

Inventor： NANNI, Peter ,  FREISEN, Kevin

IPC: H04J3/00 ,  H04L27/10

CPC classification number: H04B17/104 ,  H04B17/11 ,  H04B17/12 ,  H04B17/14

Abstract: A method and apparatus to control frequency deviation of a portable transceiver (PT) (122) utilizing a time-division-duplex (TDD) protocol for communicating with a base transceiver (116). The base transceiver (116) transmits (708) a first signal having first deviation levels (706). The PT (122) receives (802) the first signal, measures (808, 810, 824) it to derive estimates of the first deviation levels, and stores (826) the estimates in a memory (322). The PT (122) generates (828) a second signal having second deviation levels (830) controlled by control signal values (323), samples (832) the second signal to derive a second received signal, and appraises (902) the second received signal to derive estimates of the second deviation levels (830). The PT (122) compares (906) corresponding estimates of the first and second frequency deviation levels (830) to derive adjusted control signal values (908) for controlling the second deviation levels (830) to approximate the first deviation levels (706), and thereafter controls (914) the second deviation levels (830) in accordance with the adjusted control signal values (908).

公开(公告)号：EP0824806A1

公开(公告)日：1998-02-25

申请号：EP96911410.0

申请日：1996-03-25

Applicant: MOTOROLA, INC.

Inventor： NANNI, Peter ,  FREISEN, Kevin

IPC: H04B17

CPC classification number: H04B17/104 ,  H04B17/11 ,  H04B17/12 ,  H04B17/14

Abstract: A method and apparatus to control frequency deviation of a portable transceiver (PT) (122) utilizing a time-division-duplex (TDD) protocol for communicating with a base transceiver (116). The base transceiver (116) transmits (708) a first signal having first deviation levels (706). The PT (122) receives (802) the first signal, measures (808, 810, 824) it to derive estimates of the first deviation levels, and stores (826) the estimates in a memory (322). The PT (122) generates (828) a second signal having second deviation levels (830) controlled by control signal values (323), samples (832) the second signal to derive a second received signal, and appraises (902) the second received signal to derive estimates of the second deviation levels (830). The PT (122) compares (906) corresponding estimates of the first and second frequency deviation levels (830) to derive adjusted control signal values (908) for controlling the second deviation levels (830) to approximate the first deviation levels (706), and thereafter controls (914) the second deviation levels (830) in accordance with the adjusted control signal values (908).