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公开(公告)号：AT415780T
公开(公告)日：2008-12-15
申请号：AT03816439
申请日：2003-03-28
Applicant: ERICSSON TELEFON AB L M
Inventor： HAARTSEN JACOBUS
Abstract: A method and apparatus for managing traffic in a network to and from a remote communications device with limited power supply resources. A controller determines the existing power level of the device and uses the determination to control data transmission to and from the device. Data may be transmitted and received by the device by determining the power required to complete a transmission or reception. The controller then determines whether to send the data, redirect the data, cancel the data transmission, or transmit only a portion of the data. The decision is made as to which option to choose based on the amount of power available to complete the data transmission.
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公开(公告)号：ES2281930T3
公开(公告)日：2007-10-01
申请号：ES98944403
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: Un método de operar una primera unidad sin cables para participar simultáneamente en una pluralidad de redes sin cables, comprendiendo el método los pasos de: establecer una conexión con una segunda unidad sin cables en una primera red sin cables; determinar un período de tiempo muerto de espera (303); entrar en modo de espera con respecto a la primera red sin cables; establecer una conexión con una tercera unidad sin cables en una segunda red sin cables; participar en actividades en la segunda red sin cables; y tras la expiración del período de tiempo muerto de espera, reanudar (321) la participación activa en la primera red sin cables,
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公开(公告)号：MY128128A
公开(公告)日：2007-01-31
申请号：MYPI9900065
申请日：1999-01-08
Applicant: ERICSSON TELEFON AB L M
Inventor： HAARTSEN JACOBUS , ELG JOHANNES
IPC: H04B7/24 , H04J3/24 , H04B1/713 , H04L12/28 , H04L12/56 , H04W8/26 , H04W52/02 , H04W68/00 , H04W74/06 , H04W84/18
Abstract: A SYSTEM COMPRISES A WIRELESS MASTER UNIT AND ONE OR MORE WIRELESS SLAVE UNITS, EACH HAVING A UNIQUE IDENTIFIER (301).WHEN A WIRELESS SLAVE UNIT IS ACTIVE, IT IS ADDRESSED BY ONE OF A LIMITED NUMBER OF TEMPORARY ADDRESSES (305).A PARK MODE ENABLES A WIRELESS SLAVE UNIT TO BE IN AN IDLE STATE DURING ITS TEMPORARY ADDRESS (305) IS DEALLOCATED, ENABLING THAT ADDRESS TO BE ASSSIGNED TO ANOTHER WIRELESS SLAVE UNIT. TO PAGE A PARKED SLAVE,A PAGING BEACON PACKET (101) IS BROADCAST TO,AND RECEIVED BY, EACH OF THE WIRELESS SLAVE UNITS AT FIXED INTERVALS DURING A MASTER-TO-SLAVE TIME SLOT. EACH WIRELESS SLAVE UNIT DETERMINES WHETHER THE RECEIVED PAGING BEACON PACKET (101) INCLUDES ITS UNIQUE IDENTIFIER (301).IF SO, THE WIRELESS SLAVE UNITS RETRIEVES A TEMPORARY ADDRESS (305) FROM THE PAGING BEACON PACKET (101).THE WIRELESS UNIT TRANSMITS A RESPONSE TO THE WIRELESS MASTER UNIT DURING A SUBSEQUENT SLAVE-TO-MASTER TIME SLOT IF THE RECEIVED PAGING BEACON PACKET (101) INCLUDED THE UNIQUE IDENTIFIER (301) BELONGING TO THE WIRELESS SLAVE UNIT. PARKED WIRELESS SLAVE UNITS ARE ALSO ASSIGNED UNIQUE RESPONSE NUMBER BY THE MASTER.THE MASTER BROADCASTS A POLLING BEACON PACKET (601,701) DURING A MASTER-TO -SLAVE TIME SLOT. IF THE PARKED SLAVE UNIT DESIRES ACCESS TO THE CHANNEL, IT TRANSMITS A RESPONSE IN AN N: TH SLAVE-TO-MASTER TIME SLOT FOLLOWING THE POLLING BEACON PACKET,WHERE N IS A FUNCTION OF THE SLAVE,S UNIQUE RESPONSE NUMBER.(FIG 3)
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公开(公告)号：AT350867T
公开(公告)日：2007-01-15
申请号：AT99921331
申请日：1999-04-01
Applicant: ERICSSON TELEFON AB L M
Inventor： HAARTSEN JACOBUS
Abstract: An uncoordinated frequency hopping cellular system includes a mobile unit and a number of base stations. The mobile unit determines which base stations are in a geographical location defined by a location of the mobile unit. This determination is made by transmitting one or more inquiry messages, and receiving response information transmitted by responding base stations. The mobile unit then selects, for use by the mobile unit, one of the base stations from the set of base stations. Each of the base stations receives at least one of the inquiry messages, and transmits the response information to the mobile unit in response to the at least one received inquiry message. The mobile unit determines synchronization information from the response information, and uses this to establish communication with the selected base station.
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公开(公告)号：DE69932430D1
公开(公告)日：2006-08-31
申请号：DE69932430
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.
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Patent Agency Ranking
公开(公告)号：DE69929995T2
公开(公告)日：2006-08-17
申请号：DE69929995
申请日：1999-10-01
Applicant: ERICSSON TELEFON AB L M
Inventor： HAARTSEN JACOBUS
Abstract: Establishing a connection between a paging unit and a standby unit in a channel hopping communications system includes activating the standby unit for an activation time period out of every standby time period. During each activation time period, the standby unit monitors a selected channel for receipt of a paging message. The selected channel is selected from a plurality of channels, and, for each subsequent activation time period, the selected channel is a subsequent one of the plurality of channels as specified by a hopping sequence and an internal clock. A page train is repeatedly transmitted from the paging unit to the standby unit, until a response is received from the standby unit. Each page train includes a plurality of paging messages, each paging message being transmitted on a different one of a subset of the plurality of channels. Selection of a page train for transmission by the paging unit may be based on an estimate of the standby unit's internal clock. The generation of page trains can be further optimized for those cases in which more than two page trains will be transmitted. The purpose of the optimization is to generate page trains that, when transmitted, are most likely to elicit an early response from the paged unit.
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公开(公告)号：DE69833019T2
公开(公告)日：2006-07-13
申请号：DE69833019
申请日：1998-10-06
Applicant: ERICSSON TELEFON AB L M
Inventor： HAARTSEN JACOBUS
IPC: H04B1/713 , H04B1/7143
Abstract: A frequency hopping generator comprises an XOR processing module and a PERM (permutation) processing module arranged in series. The XOR and PERM modules act directly on input clock lines as a function of a selection address. The hopping number sequence generated by the frequency hopping generator can be changed in real-time by changing the selection addresses, while the phase of the sequence can be changed in real-time by changing the clock value on the clock lines. The frequency generator finds exemplary use in rapidly switching between different piconets in a wireless scatter network.
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公开(公告)号：DE60203495D1
公开(公告)日：2005-05-04
申请号：DE60203495
申请日：2002-05-02
Applicant: ERICSSON TELEFON AB L M
Inventor： HAARTSEN JACOBUS
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.
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公开(公告)号：AT292343T
公开(公告)日：2005-04-15
申请号：AT02742954
申请日：2002-05-02
Applicant: ERICSSON TELEFON AB L M
Inventor： HAARTSEN JACOBUS
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.
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公开(公告)号：DE69629187D1
公开(公告)日：2003-08-28
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.
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