公开(公告)号：GB2380898A

公开(公告)日：2003-04-16

申请号：GB0124176

申请日：2001-10-09

Applicant: MOTOROLA INC

Inventor： ROBINSON BILL ,  SPEAR STEPHEN L ,  RABE DUANE

IPC: H04L12/801 ,  H04M3/42 ,  H04M3/00 ,  H04Q1/00 ,  H04W8/04 ,  H04W8/06 ,  H04W12/06 ,  H04W88/06 ,  H04Q7/38

Abstract: The present invention relates to a subscriber device that is capable of registering on more than one communication network simultaneously, and to a location register for a communication network for recording the networks on which the subscriber device is simultaneously registered. The subscriber device may be active on all registered networks, or only on one registered network. The location register may prioritise the list of network registrations. A method of maintaining the location register and of selling up a call to the subscriber device is also disclosed.

公开(公告)号：FI110149B

公开(公告)日：2002-11-29

申请号：FI941009

申请日：1994-03-02

Applicant: MOTOROLA INC

Inventor： KOTZIN MICHAEL D ,  SPEAR STEPHEN L

IPC: H04B1/713 ,  H04B1/7136 ,  H04B7/26 ,  H04B7/212 ,  H04L27/30

Abstract: A base-site (304) combines baseband frequency hopping and fast-synthesizer hopping to produce an economical frequency hopping communication system (300). The base-site (304) combines the fast-synthesizer frequency hopping capability of transmitters (307-309) with baseband frequency hopping to produce a frequency hopping communication system (300) which serves the same number of subscribers served by transmitters (208-213) in a purely baseband hopping communication system (200), but with fewer transmitters (307-309). The implementation of frequency-selective cavities (312-317) having very low loss eliminates the need for wideband hybrid combiners (112-114), which in turn eliminates transmitted-signal power loss experienced in a purely fast-synthesizer frequency hopping communication system (100).

公开(公告)号：AT177280T

公开(公告)日：1999-03-15

申请号：AT88118501

申请日：1988-11-07

Applicant: MOTOROLA INC

Inventor： SPEAR STEPHEN L

IPC: H04W36/08 ,  H04W36/38 ,  H04W76/02 ,  H04Q7/22 ,  H04B7/26

Abstract: An improved cellular telephone communication system is described having operational steps which prevent a call from being dropped due to a radiotelephone (130) not receiving a handoff instruction from its host base site (115). The system includes a switch controller (122) for determining that the radiotelephone requires a handoff from a first base site coverage area (110) to a second base site coverage area (112) and for communicating a handoff message to the associated first (115) and second base site equipment (119). The first base site equipment then transmits the handoff message to the radiotelephone. If the radiotelephone does not receive the message, it determines that the call has been lost, siezes a signalling channel from the second base site, and requests, via the second base site a call reconnection by transmitting a special message. The second base site then informs the radiotelephone of the handoff instruction and the handoff is completed with a successful reconnection of the call.

公开(公告)号：FI100084B

公开(公告)日：1997-09-15

申请号：FI885520

申请日：1988-11-28

Applicant: MOTOROLA INC

Inventor： SPEAR STEPHEN L

IPC: H04W36/08 ,  H04W36/38 ,  H04W76/02 ,  H04Q7/38 ,  H04B7/26

公开(公告)号：ES2100950T3

公开(公告)日：1997-07-01

申请号：ES91907993

申请日：1991-02-20

Applicant: MOTOROLA INC

Inventor： KOTZIN MICHAEL D ,  SPEAR STEPHEN L

IPC: H04B7/26 ,  H04J13/00 ,  H04J13/06 ,  H04W16/02 ,  H04W16/12 ,  H04W16/24 ,  H04B1/713

Abstract: In a TDMA cellular network, there is provided a mechanism for shared-carrier frequency-hopping. It comprises: allocating on a frame basis within a reuse diameter to one coverage area during certain timeslot(s) at least one from a pool of TDM-frame-hopped carriers and allocating on a frame basis within that carrier reuse diameter to another coverage area during certain other, substantially non-overlapping timeslot(s) that frame-hopped carrier, all in substantially non-interfering time-synchronism with any proximal reuse of that carrier, whereby the advantages of frequency hopping are obtained. Stated differently, it comprises: at one instant in time, allocating within a reuse diameter to one coverage area at least one of a plurality of hopped carriers and at that same instant in time, allocating within that carrier reuse diameter to another coverage area another of that plurality of hopped carriers, all in time-synchronism with any proximal reuse of that carrier. The control and access carriers may also be included in the hopping pool, causing certain timeslots to be hopped on a sequence different from the others. The pool of hopped carriers is further apportioned among co-located sites into hopping groups, thereby reducing intra-system synchronization requirements. To solve the near/far problem, TDM timeslots bordering hopping boundaries are preferentially allocated to less distant mobile users.

公开(公告)号：AT129110T

公开(公告)日：1995-10-15

申请号：AT91301473

申请日：1991-02-25

Applicant: MOTOROLA INC

Inventor： SPEAR STEPHEN L

IPC: H04B7/26 ,  H04W16/24 ,  H04Q7/22

Abstract: In a TDMA cellular system, there is provided a mechanism for splitting the allocation of time slots within a TDM frame between adjacent coverage areas. There is provided a method of and apparatus for time-allocation of TDMA channels. It is characterized by: periodically allocating some portion of a carrier (19A-24A) of radio traffic to one coverage area during one time interval and periodically allocating some other portion of that same carrier (19B-24B) to another coverage area during a substantially non-overlapping time interval, all in time synchronism with any proximal reuse of that carrier. The distribution of channels in adjacent coverage areas thereby approaches parity (8+8+5 APPROX 8+8+3+3) and the minimum channel capacity per coverage area is enhanced (8+8 => 8+8+3+3; 16 => 22).

公开(公告)号：CA2142614A1

公开(公告)日：1995-01-26

申请号：CA2142614

申请日：1994-06-21

Applicant: MOTOROLA INC

Inventor： SPEAR STEPHEN L

IPC: H04Q3/00 ,  H04W76/02 ,  H04W92/14 ,  H04B7/26 ,  H04Q7/22

Abstract: METHOD OF AND APPARATUS FOR PROVIDING A LOCAL PSTN INTERCONNECT WITH A CELLULAR BASE SITE A method and apparatus is provided for routing calls between a PSTN and a base station system 11, 14-18. The method includes the step of associating a port of a mobile switching center 12 of the cellular communication system 10 with a PSTN interconnect port of a PSTN interconnect of the base station system 11, 14-18. The method further includes translating an identifier of the PSTN interconnect port and associated port of the mobile switching center 12 between the mobile switching center 12 and base station system 11, 14-18 and exchanging control information between the PSTN interconnect port of the base station system 11, 14-18 and the associated port of the mobile switching center 12. The apparatus provides a means for accomplishing the method.

公开(公告)号：BR9205469A

公开(公告)日：1994-03-15

申请号：BR9205469

申请日：1992-08-24

Applicant: MOTOROLA INC

Inventor： KOTZIN MICHAEL D ,  SPEAR STEPHEN L ,  LEV VALY

IPC: H04B7/26

公开(公告)号：AU4409393A

公开(公告)日：1994-01-31

申请号：AU4409393

申请日：1993-06-09

Applicant: MOTOROLA INC

Inventor： KOTZIN MICHAEL D ,  SPEAR STEPHEN L

IPC: H04B1/713 ,  H04B1/7136 ,  H04L27/30 ,  H04Q7/04

Abstract: A base-site (304) combines baseband frequency hopping and fast-synthesizer hopping to produce an economical frequency hopping communication system (300). The base-site (304) combines the fast-synthesizer frequency hopping capability of transmitters (307-309) with baseband frequency hopping to produce a frequency hopping communication system (300) which serves the same number of subscribers served by transmitters (208-213) in a purely baseband hopping communication system (200), but with fewer transmitters (307-309). The implementation of frequency-selective cavities (312-317) having very low loss eliminates the need for wideband hybrid combiners (112-114), which in turn eliminates transmitted-signal power loss experienced in a purely fast-synthesizer frequency hopping communication system (100).

公开(公告)号：EP1588522A4

公开(公告)日：2008-12-03

申请号：EP04701833

申请日：2004-01-13

Applicant: MOTOROLA INC

Inventor： STEINBERG PAUL D ,  MALCOLM RICHARD J ,  PEDZIWIATR JOSEPH M ,  WHITE RICHARD E ,  TELL DANIEL F ,  MOORE BRIAN J ,  SPEAR STEPHEN L ,  SAUER JOHN M

IPC: H04L12/28 ,  H04L12/56 ,  H04L12/26

CPC classification number: H04L45/302 ,  H04L12/5692 ,  H04L41/5003 ,  H04L45/00 ,  H04L45/04 ,  H04W28/10 ,  H04W40/02

Abstract: The invention provides for path optimization for routing of a communication session in a network having a plurality of core networks (110) coupled to a plurality of access networks (120). Both a core network and an access network perform the path optimization by determining a plurality of possible paths to a plurality of target access points to form a target matrix, determining a corresponding route preference factor for each possible path of the target matrix, and selecting, from the target matrix, a possible path having an optimal route preference factor. An overall or complete path, for routing of the communication session, is then determined either by combining the selected possible paths, or by selecting one possible path as a complete path. The route preference factor, for each possible path, is determined based upon various routing variables, such as quality of service, bandwidth for the communication session, route complexity, interconnect cost, routing cost; resource loading, resource availability, and operator preference for traffic biasing.