公开(公告)号：ES2313956T3

公开(公告)日：2009-03-16

申请号：ES01930986

申请日：2001-05-01

Applicant: MOTOROLA INC

Inventor： SPEAR STEPHEN L

IPC: H04B7/26 ,  H04W36/08 ,  H04W36/10 ,  H04W36/18 ,  H04W92/12

Abstract: Método para generar listas de celdas vecinas en un sistema celular, incluyendo el sistema una primera celda y una pluralidad de celdas (116) vecinas, incluyendo la primera celda y las celdas (116) vecinas cada una una pluralidad de controladores activos designados asociados con las mismas, incluyendo el método las etapas de: designar uno de los controladores para la primera celda como el controlador activo para la primera celda, en la que un controlador activo controla un transceptor que da servicio a una celda; generar una primera lista de vecinos de los controladores activos para las celdas vecinas, generándose la lista según una base de datos de controladores que pueden enlazarse con el controlador activo designado, incluyendo dicha base de datos información de dirección para dichos controladores y comprendiendo información sobre qué controlador controla actualmente una celda particular; y generar una segunda lista de vecinos de los controladores activos para las celdas vecinas tras un cambio en el estado activo de cualquiera de los controladores activos vecinos, generándose la lista según la base de datos.

公开(公告)号：AU2003265479A1

公开(公告)日：2004-03-11

申请号：AU2003265479

申请日：2003-08-15

Applicant: MOTOROLA INC

Inventor： SPEAR STEPHEN L

IPC: H04W88/18 ,  H04J3/16

Abstract: A method (400) and a communication network (110) for operating a cross coding element are described herein. The communication network (110) may detect a condition suggesting a change in encoded protocols between a first endpoint (240) and a second endpoint (250) such as, but not limited to, a call setup, an application requirement, and a handover associated with the first endpoint (240). The first endpoint (240) may operate in accordance with a first encoded protocol whereas the second endpoint (250) may operate in accordance with a second encoded protocol. The communication network (110) may communicate with a cross coding element (230) configured to convert a first encoded protocol signal from the first endpoint (240) to a second encoded signal. The first encoded signal may be encoded by the first encoded protocol, and the second encoded signal may be encoded by the second encoded protocol.

公开(公告)号：GR3030388T3

公开(公告)日：1999-09-30

申请号：GR990401482

申请日：1999-06-01

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：CA2217574A1

公开(公告)日：1997-09-04

申请号：CA2217574

申请日：1996-12-13

Applicant: MOTOROLA INC

Inventor： SPEAR STEPHEN L ,  CSAPO JOHN S ,  SCHAEFFER DENNIS R ,  KOTZIN MICHAEL D ,  THOMPSON DENNIS J

IPC: H04B7/26 ,  H04W36/04 ,  H04Q7/38 ,  H04Q7/36

Abstract: A wireless communication system (200, 300, 400, 500) mitigates the effects o f excess timing delay caused by varying lengths of communication paths. In one general implementation, a transition communication path (206, 323, 329) is used to transfer a time-advanced version of a timing reference signal so tha t the cumulative time delay at a transition cell (209, 325, 331) is reduced. I n another general implementation, the timing reference signal is time-advanced in all communication paths (403-411), and selected communication paths (403- 407) include a time delay means (423-427, 503-507) such that the cumulative time delay at an area (421) near a target coverage area (130) is reduced. By reducing the cumulative time delay at the area (421) near the target coverag e area (130), a hand-off of a communication of a mobile station (128) into the target coverage area (130) can be performed.

公开(公告)号：GB2305081A

公开(公告)日：1997-03-26

申请号：GB9618140

申请日：1996-08-30

Applicant: MOTOROLA INC

Inventor： SPEAR STEPHEN L

IPC: H04J3/06 ,  H04L7/04 ,  H04L7/10 ,  H04W56/00 ,  H04W74/08 ,  H04Q7/30 ,  H04B7/212 ,  H04J3/16

Abstract: A TDMA communication system uses an enhanced access burst 300. The enhanced access burst has an additional logical information field 311, or alternately, one of a set of possible synchronising sequences indicative of supplementary information. Upon receipt of a system parameter indicating an enhanced access burst capability, a communication unit (105 in figure 1 not shown) sends an appropriate enhanced access burst 300 with the increased information. A reduction in system messaging is thus achieved, for example, by avoiding the need to send the supplemental information via subsequent bursts. The method is particularly suited for transferring the shorter types of data bursts in GSM systems.

公开(公告)号：DE69113651D1

公开(公告)日：1995-11-16

申请号：DE69113651

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：PL167432B1

公开(公告)日：1995-09-30

申请号：PL28897691

申请日：1991-02-06

Applicant: MOTOROLA INC

Inventor： KOTZIN MICHAEL D ,  SPEAR STEPHEN L

IPC: H01J3/24 ,  H04B3/60 ,  H04J3/00 ,  H04M7/00 ,  H04W88/08 ,  H04L27/30 ,  H04J13/06

Abstract: Method and apparatus for facilitating communication of information in a system without the use of a baseband hopping unit, by sharing a common TDM bus between a plurality of radio communication units, processing units, and information links, where the processing units extract traffic channel information, packetize and/or unpacketize the information, and return same back to the common bus for retrieval by the information links or radio communication units.

公开(公告)号：AU620754B2

公开(公告)日：1992-02-20

申请号：AU7191991

申请日：1991-02-26

Applicant: MOTOROLA INC

Inventor： WHITTINGTON CHARLES L ,  SPEAR STEPHEN L

IPC: H04J3/06 ,  H04Q7/04 ,  H04L7/00 ,  H04Q11/04

公开(公告)号：DE4105884A1

公开(公告)日：1991-08-29

申请号：DE4105884

申请日：1991-02-25

Applicant: MOTOROLA INC

Inventor： SPEAR STEPHEN L

IPC: H04W92/02

Abstract: The public switched telephone network (PSTN) (120) is coupled to both the central switch (MSC) (102) and the base station controller (BSC) (101, 110). A call placed to the BSC (101) can be routed to a base station (103-105) by the BSC (101) or to the MSC (102) for routing to the PSTN (120) or another BSC (110). The MSC (102) processes the signalling information routed from the BSC (101). If a call is placed to the MSC (102), the MSC (102) routes the call to the appropriate BSC (101, 110) while also processing the signalling information.

公开(公告)号：GB2241411A

公开(公告)日：1991-08-28

申请号：GB9104085

申请日：1991-02-27

Applicant: MOTOROLA INC

Inventor： WHITTINGTON CHARLES L ,  SPEAR STEPHEN L

IPC: H04J3/06

Abstract: An improved synchronization technique is provided that may be used to synchronize outlying "downstream" nodes in a cellular radio telephone system to a master node. According to the invention, the master node starts a timer while simultaneously sending a predetermined signal known as a "token" to a target node. Upon receipt of the token, the target starts a timer and stores the token. The target then waits for the next available time when it can return the token to the master. When it later returns the token to the master, the target stops its timer, thereby generating a "holding time" for the token. Upon receipt of the token, the master stops its timer, thereby generating an "elapsed time" for the token. The time delay for the channel interconnecting a target and the master may then be computed as one-half the difference between the elapsed time and the holding time. Moreover, based on this time delay information, the target may then be synchronized to the master.