公开(公告)号：JPH10191428A

公开(公告)日：1998-07-21

申请号：JP36362297

申请日：1997-12-15

Applicant: MOTOROLA INC

Inventor： BRUCKER EUGNE J ,  VILMUR RICHARD J

IPC: H04W36/00 ,  H04Q7/22 ,  H04J13/00 ,  H04Q7/28 ,  H04Q7/38

Abstract: PROBLEM TO BE SOLVED: To provide a hand-off method and radio communication equipment that shortens an operating state time of a mobile station in a slot cycle. SOLUTION: While radio communication equipment 100 is operated in a slot mode of a code division multiple access(CDMA) system, hand-off is made possible. The radio communication equipment stores an active set including an active pilot and an adjacent set including plural adjacent pilots before entering the slot mode. A reception search device 109 scans the active pilot and the plural adjacent pilots before the designated slot. A logic and control circuit 113 includes at least tow pilots consisting of the active pilot and the plural adjacent pilots to be scanned to the active set before the designated slot. Two of pleural reception fingers 107 simultaneously monitor paging channel of the pilot for the designated slot.

公开(公告)号：JPH10191426A

公开(公告)日：1998-07-21

申请号：JP34064797

申请日：1997-11-25

Applicant: MOTOROLA INC

Inventor： BRUCKER EUGNE J ,  VILMUR RICHARD J

IPC: H04B1/7117 ,  H04W36/00 ,  H04Q7/22 ,  H04J13/00 ,  H04Q7/38

Abstract: PROBLEM TO BE SOLVED: To provide radio communication equipment capable of hand-off while being in operation in the slot mode of a code division multiple access(CDMA) system. SOLUTION: Radio communication equipment 100 is provided with a reception search device 109 that measures a signal strength of an active pilot before a designated slot and measures at least one signal strength among plural adjacent pilots between the designated slots. A reception finger 107 demodulates a paging channel of the active pilot between the designated slots and discriminates simultaneously the signal strength of the pilot and the reception search device 109. By using a strong adjacent list priority is given to a sequence of scanning adjacent pilots. A logic and control circuit 113 discriminates whether an adjacent pilot is to be scanned crossing over the designated slot, a strong adjacent list is to be revised or the radio communication equipment is to be handed-off to another pilot.

公开(公告)号：JPH10145333A

公开(公告)日：1998-05-29

申请号：JP29355097

申请日：1997-10-08

Applicant: MOTOROLA INC

Inventor： VILMUR RICHARD J

IPC: H04B1/7093 ,  H04B7/26 ,  H04Q7/38 ,  H04J13/00

Abstract: PROBLEM TO BE SOLVED: To provide the method and device to quickly acquire a pilot channel by using a matched filter. SOLUTION: The processing capability of a radio telephone set 104 of a CDMA communication system 100 is enhanced by using a reception retrieval device 114, including a matched filter 128 to acquire a pilot energy for all transmission receptible by a base station 102 and other adjacent base stations. A detected PN sequence is compared with a prescribed PN sequence stored in the radio telephone set 104. The prescribed PN sequence includes final 512 tips in a short PN sequence used, e.g. for spreading an in-phase channel and an orthogonal phase channel.

公开(公告)号：EP0165265A4

公开(公告)日：1985-12-30

申请号：EP84904314

申请日：1984-11-19

Applicant: MOTOROLA INC

Inventor： VILMUR RICHARD J ,  BERG DANIEL T

IPC: H04B1/40 ,  H04L5/14 ,  H04B3/20

CPC classification number: H04B1/408

Abstract: A duplex FM communication transceiver (10) in which the problem of requiring additional costly apparatus to separately generate a modulated transmit carrier signal and a receiver first mixer injection signal is solved by utilizing the modulated transmit carrier signal as the receiver first mixer (32) injection signal. The receiver portion (27-46) of the transceiver (10) comprises dual conversion circuitry, and the transmit information signal used for modulating the transmit carrier signal is phase and amplitude adjusted and then utilized to modulate the receiver second injection local oscillator (41) which provides the input injection signal to the receiver second mixer (36). The second mixer (36) substantially cancels all of the transmit information signal previously introduced into the receiver path by the first mixer (32) and provides only received information signals to a demodulator (43) which provides audio signals to a speaker (46).

Abstract translation: 一种双工FM通信收发信机（10），其中通过利用调制的发射载波信号作为接收机第一混频器（32）注入来解决需要额外昂贵的设备分别生成调制的发射载波信号和接收机第一混频器注入信号的问题 信号。 收发器（10）的接收器部分（27-46）包括双转换电路，并且用于调制发送载波信号的发送信息信号经过相位和幅度调整，然后用于调制接收器第二次注入本地振荡器（41） 其将输入注入信号提供给接收器第二混频器（36）。 第二混频器（36）基本上抵消了先前由第一混频器（32）引入接收机路径的所有发射信息信号，并且仅将接收到的信息信号提供给向扬声器（46）提供音频信号的解调器（43）。

公开(公告)号：EP0204718A4

公开(公告)日：1988-03-30

申请号：EP85905303

申请日：1985-10-16

Applicant: MOTOROLA INC

Inventor： PUHL LARRY C ,  VILMUR RICHARD J

IPC: H04M1/60 ,  H04B20060101 ,  H04B3/20 ,  H04B3/23 ,  H04M20060101 ,  H04M1/00 ,  H04M9/08

CPC classification number: H04M9/082 ,  H04B3/23

公开(公告)号：DE19745432C2

公开(公告)日：2001-05-03

申请号：DE19745432

申请日：1997-10-15

Applicant: MOTOROLA INC

Inventor： VILMUR RICHARD J

IPC: H04B1/7093 ,  H04B7/26 ,  H04Q7/38 ,  H04B1/40 ,  H04B7/216 ,  H04B1/76 ,  H04L27/26 ,  H03H17/02

Abstract: Performance of a radiotelephone (104) in a CDMA communication system (100) is enhanced using a receiver searcher (114) that includes a matched filter (128) to capture the pilot energies of all receivable transmissions from a base station (102) and other nearby base stations. A detected PN sequence is compared with a predetermined PN sequence stored at the radiotelephone (104). The predetermined PN sequence includes, for example, the last 512 chips in the short PN sequence used for spreading the in-phase channel and the quadrature-phase channel.

公开(公告)号：FR2757734B1

公开(公告)日：2001-03-09

申请号：FR9713826

申请日：1997-11-04

Applicant: MOTOROLA INC

Inventor： BRUCKERT EUGENE ,  VILMUR RICHARD J

IPC: H04W36/00 ,  H04Q7/32 ,  H04B7/216

Abstract: A wireless communication device (100) can be handed off while operating in the slotted mode of a CDMA system. The wireless communication device (100) stores, prior to entering slotted mode, an Active Set including at least one active pilot and a Neighbor Set including a plurality of neighbor pilots. At least one receiver searcher (109) scans the at least one active pilot and at least one of the plurality of neighbor pilots prior to an assigned slot. A logic and control circuit (113) includes in the Active Set, prior to the assigned slot, at least two pilots of the at least one active pilot and the at least one of the plurality of neighbor pilots scanned prior the assigned slot. At least two of a plurality of receiver fingers (107) simultaneously monitor the Paging Channels of the at least two pilots during the assigned slot.

公开(公告)号：GB2307832B

公开(公告)日：2000-01-26

申请号：GB9624101

申请日：1996-11-20

Applicant: MOTOROLA INC

Inventor： BRUCKERT EUGENE J ,  VILMUR RICHARD J ,  RICH RANDALL W

IPC: H04B7/08

Abstract: A radio subscriber unit (102) comprises a controller (108) and a switched antenna diversity receiver apparatus (106) including a first antenna (114), a second antenna (116) and a receiver (126). The first antenna (114) is adapted to receive a first representation (158) of a radio frequency (RF) signal (156). The second antenna (116) is adapted to receive a second representation (160) of the RF signal (156). The receiver (126), selectively coupled to the first antenna (114) and the second antenna (116), generates a received signal (153) responsive to receiving at least one of the first representation (158) of the RF signal (156) from the first antenna (114) and the second representation (160) of the RF signal (156) from the second antenna (116). The controller (108), coupled to the receiver (126), selectively couples to the receiver (126), responsive to the received signal (153), one of: only the first antenna (114), only the second antenna (116) and both the first antenna (114) and the second antenna (116).

公开(公告)号：GB2307832A

公开(公告)日：1997-06-04

申请号：GB9624101

申请日：1996-11-20

Applicant: MOTOROLA INC

Inventor： BRUCKERT EUGENE J ,  VILMUR RICHARD J ,  RICH RANDALL W

IPC: H04B7/08

Abstract: Radio subscriber unit 102 comprises controller 108 and switched antenna diversity receiver apparatus 106 including first antenna 114, second antenna 116 and receiver 126. The first antenna receives a first representation 158 of a radio frequency (RF) signal 156 whilst the second antenna receives a second representation 160 of it. The receiver, selectively coupled to the first and second antennae, generates a received signal 153 responsive to receiving at least one of the first representation 158 of the RF signal 156 from the first antenna and the second representation 160 of the RF signal 156 from the second antenna. The controller 108, coupled to the receiver, selectively couples to the receiver, responsive to the received signal 153, one of: only the first antenna, only the second antenna and both the first and second antennae. A load 124 may also be switched-in to compensate for the change in impedance when two antennae are coupled to the receiver.

公开(公告)号：GB2307830A

公开(公告)日：1997-06-04

申请号：GB9624076

申请日：1996-11-20

Applicant: MOTOROLA INC

Inventor： BRUCKERT EUGENE J ,  VILMUR RICHARD J

IPC: H04B7/08 ,  H04L1/02 ,  H04Q7/38

Abstract: A cellular radiotelephone has a diversity receiver apparatus consisting of at least two antennae 144,116. The diversity may be switched antenna diversity (SAD), selection diversity (SD) or maximal ratio combining diversity (MRCD). Composite radio frequency signals (I 0 ) received by each antenna comprise desired RF signals including at least one coded pilot signal (E c ) and interfering signals. The optimum antenna sampling rate and antennae configuration are controlled responsive to at least one of a ratio (E c /I 0 ) and an integrated received signal strength indicator (* integral *RSSI) of the composite RF signal. The antennae can be configured such that either one or both are selectively coupled to the receiver. When only one antenna is selected a load 124 is connected via switch 122 to node 145 to ensure correct impedance matching. The cellular radiotelephone may be dual mode, operable in two communication systems which may be digital or analogue systems. In this case it may employ two information sets comprising at least one of RSSI, E c /I 0 and * integral *RSSI and/or two diversity algorithms depending on the system being used. A diversity algorithm for a DS-CDMA system is described in detail (Figs 4-6).