公开(公告)号：DE69837341D1

公开(公告)日：2007-04-26

申请号：DE69837341

申请日：1998-09-15

Applicant: ERICSSON TELEFON AB L M

Inventor： HAARTSEN JACOBUS

IPC: H04L12/56 ,  H04L12/28 ,  H04M3/58 ,  H04W52/02 ,  H04W76/02 ,  H04W84/18 ,  H04W84/20 ,  H04W88/06 ,  H04W92/02

Abstract: A first wireless unit engages in contemporaneous participation in a plurality of wireless networks. A connection is established with a second wireless unit in a first wireless network. Then, a hold time-out period is determined, and the first wireless unit enters a hold mode with respect to the first wireless network. While in hold mode, the first wireless unit establishes a connection with a third wireless unit in a second wireless network. This may include the first wireless unit paging the third wireless unit and acting as a master unit in the second wireless network. Alternatively, the first wireless unit may periodically listen for paging messages from a master unit, and respond when paged, thereby becoming a slave in the second wireless network. The first wireless unit then participates in activities in the second wireless network. Upon expiration of the hold time-out period, the first wireless unit resumes active participation in the first wireless network. This may include determining a second hold time-out period to be used in connection with the second wireless network, and entering a hold mode with respect to the second wireless network.

公开(公告)号：DE60026967T2

公开(公告)日：2006-08-24

申请号：DE60026967

申请日：2000-01-20

Applicant: ERICSSON TELEFON AB L M

Inventor： HAARTSEN JACOBUS ,  MARHOLEV BOJKO

IPC: G04G3/00 ,  H03L7/02 ,  H03J7/06 ,  H03L7/14 ,  H03L7/181

公开(公告)号：AT333723T

公开(公告)日：2006-08-15

申请号：AT99928308

申请日：1999-05-17

Applicant: ERICSSON TELEFON AB L M

Inventor： HAARTSEN JACOBUS

IPC: H04B1/692 ,  H04B1/707 ,  H04B1/713 ,  H04B1/7156 ,  H04B7/26

Abstract: In a radio system that employs frequency hopping (FH), access time delay is reduced, without compromising processing gain, by adding direct-sequence (DS) spreading to the system. This results in a hybrid FH/DS system, wherein the use of DS spreading permits a reduction in the number of hop frequencies used during start-up. Once synchronization is achieved, pure FH spreading, rather than the hybrid FH/DS spreading, along with a greater number of hop frequencies are used.

公开(公告)号：MY125103A

公开(公告)日：2006-07-31

申请号：MYPI20002683

申请日：2000-06-14

Applicant: ERICSSON TELEFON AB L M

Inventor： HAARTSEN JACOBUS ,  DENT PAUL

IPC: H04B1/10 ,  H04B3/06 ,  H04B7/005 ,  H04L25/03 ,  H04L25/06

Abstract: A RADIO COMMUNICATION SYSTEM IS DESCRIBED IN WHICH DC OFFSET (310, 390) AND OTHER SLOWLY VARYING DISTURBANCES WHICH THAT MAY IMPACT A SIGNAL ARE SUPPRESSED. EXEMPLARY EMBODIMENTS OF THE PRESENT INVENTION COMBINE A DIFFERENCE CIRCUIT (60), E.G, A FIR FILTER, WITH A MAXIMUM LIKELIHOOD SEQUENCE ESTIMATOR, E.G., A VITERBI DETECTOR (62), TO IMPLEMENT SUPPRESSION TECHNIQUES ON BINARY SIGNALS. (FIG. 6)

公开(公告)号：DE69733339T2

公开(公告)日：2005-11-03

申请号：DE69733339

申请日：1997-03-13

Applicant: ERICSSON TELEFON AB L M

Inventor： HAARTSEN JACOBUS

IPC: H04B1/7075 ,  H04L7/00 ,  H04L7/04 ,  H04J3/06 ,  H04J13/00

公开(公告)号：DE60203495T2

公开(公告)日：2005-09-15

申请号：DE60203495

申请日：2002-05-02

Applicant: ERICSSON TELEFON AB L M

Inventor： HAARTSEN JACOBUS

IPC: H04B7/005 ,  H04L1/00

Abstract: A system, method, and computer program product for allocating resources to a communication channel between a transmitter and a receiver are disclosed. The receiver implements a procedure that instructs the transmitter to utilize the maximum available bandwidth, consistent with maintaining satisfactory communication channel performance. When the performance of the communication channel degrades, the receiver measures the strength of a communication signal received from the transmitter. If the communication signal strength satisfies a threshold, then the bandwidth dedicated to the communication channel may be decreased, and at least one of the number of bits per symbol and coding rate may be increased. By contrast, if the communication signal strength fails to satisfy a threshold, then the transmitter may increase the transmission power and/or reduce the user rate of the communication link.

公开(公告)号：DE69632147T2

公开(公告)日：2005-03-17

申请号：DE69632147

申请日：1996-12-19

Applicant: ERICSSON TELEFON AB L M

Inventor： HAARTSEN JACOBUS

IPC: H04L1/00 ,  H04L1/16 ,  H04L1/18 ,  H04L29/06 ,  H04L29/08 ,  H04Q7/32 ,  H04Q7/22 ,  H04L12/28

Abstract: A retransmission method is disclosed wherein retransmissions over the sensitive link of the connection only involves packets that were actually disturbed in the sensitive link. At the same time, required storage capacity in the relay stations connecting the sensitive link to the nonsensitive link is reduced. Errors occurring in the sensitive part of the connection will cause retransmission over nonsensitive links of the connection as well, but this is considered to be of less importance since the nonsensitive links have a high throughput and/or low costs.

公开(公告)号：DE69629187T2

公开(公告)日：2004-05-27

申请号：DE69629187

申请日：1996-03-26

Applicant: ERICSSON TELEFON AB L M

Inventor： HAARTSEN JACOBUS

IPC: H03B5/12

Abstract: An apparatus and method are provided for increasing the Q-value of an oscillator so that a net gain in the stability of the oscillators is obtained. In the apparatus and method, a plurality of units, which each include a passive frequency-selective circuit and an active amplifier, are cascaded and the required isolation between the passive frequency-selective circuits is maintained by the active amplifier acting as a buffer. As a result, interaction and loading is prevented between the passive frequency-selective circuits so that the net gain in the stability of the oscillator is achieved because the Q-value of the oscillator is increased.

公开(公告)号：DE69623946D1

公开(公告)日：2002-10-31

申请号：DE69623946

申请日：1996-03-26

Applicant: ERICSSON TELEFON AB L M

Inventor： HAARTSEN JACOBUS

IPC: H03B1/04 ,  H03L7/02

公开(公告)号：MXPA01003486A

公开(公告)日：2002-04-24

申请号：MXPA01003486

申请日：1999-10-01

Applicant: ERICSSON TELEFON AB L M

Inventor： HAARTSEN JACOBUS

IPC: H04B1/713 ,  H04J13/00 ,  H04W52/02 ,  H04W68/00 ,  H04Q7/32

Abstract: Establecer una conexion entre una unidad que llama una unidad de espera en un sistema de comunicaciones de salto de canal incluye activar la unidad de espera durante un periodo de tiempo de activacion de cada periodo de tiempo de espera. Durante cada periodo de tiempo de activacion, la unidad de espera supervisa un canal seleccionado para recibo de un mensaje de llamada, El canal seleccionado se selecciona a partir de una pluralidad de canales. y, por cada periodo de tiempo de activacion subsecuente, el canal seleccionado es uno subsecuente de la pluralidad de canales como se especifica por una secuencia de salto y un reloj interno. Un tren de llamada se transmite repetidamente desde la unidad que llama a la unidad de espera, hasta que se recibe una respuesta de la unidad de espera, Cada tren de llamada incluye una pluralidad de mensajes de llamada, cada mensaje de llamada siendo transmitido en uno diferente de un subjuego de la pluralidad de canales, La seleccion de un tren de llamada para transmision por la unidad que llama se puede basar en un calculo del reloj interno de la unidad de espera. La generacion de trenes de llamada se puede optimizar adicionalmente para aquellos casos en los que mas de dos trenes de llamada se transmitiran. El proposito de la optimizacion es generar trenes de llamada que, cuando se transmiten, son mas probables de elucidar, una pronta respuesta. de la unidad llamada.