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公开(公告)号：EP2726835A4
公开(公告)日：2015-09-09
申请号：EP12804288
申请日：2012-06-05
Applicant: IBM
Inventor： SCHOTT WOLFGANG HANS , LOMBRISER CLEMENS , WEISS BEAT
CPC classification number: G01N29/04 , G01H1/00 , G01M5/0066 , G01M7/022 , G01M7/025 , G01V1/008 , G05B23/0235
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公开(公告)号：DE112012004936B4
公开(公告)日：2016-05-19
申请号：DE112012004936
申请日：2012-11-20
Applicant: IBM
Inventor： MUNARI ANDREA , SCHOTT WOLFGANG HANS
Abstract: Verfahren zum Weiterleiten von mindestens einem Datenpaket in einem drahtlosen Sensornetzwerk (10), wobei das drahtlose Sensornetzwerk (10) aufweist: mindestens einen Quellenknoten (S), der so konfigurierbar ist, dass er mindestens ein Datenpaket überträgt; mindestens einen Zielknoten (D), der so konfigurierbar ist, dass er das Datenpaket empfängt, das durch den Quellenknoten (S) übertragen wurde, und untereinander verbindbare Netzwerkknoten (si) zwischen dem Quellenknoten (S) und dem Zielknoten (D), die so konfigurierbar sind, dass sie das Datenpaket empfangen und weiterleiten, wobei das Verfahren die folgenden Schritte aufweist: Betreiben der Netzwerkknoten (si) gemäß einem Ruhe-Aktiv-Plan, der mindestens einen Ruhemodus und einen aktiven Modus aufweist, und Konfigurieren der Netzwerkknoten (si), sodass sie über Informationen über ihren eigenen geografischen Standort und den geografischen Standort des Zielknotens (D) verfügen, wobei das Verfahren ferner die folgenden Schritte aufweist: Aufteilen des drahtlosen Sensornetzwerks (10) in eine Vielzahl von nicht zusammenhängenden Bereichen (A0, AM-1, A1, A2), die durch Grenzen getrennt sind; Trennen jedes Bereichs (A0, AM-1, A1, A2) in mindestens drei Regionen, wobei die Regionen eine innere Grenzregion (I), eine zentrale Region (C) und eine äußere Grenzregion (O) sind; Auswählen von weiterleitenden Knoten (s1, s2, s3, s4, s5, s5, s7, s8, s9) aus den Netzwerkknoten (s1), um das Datenpaket von dem Quellenknoten (S) zu dem Zielknoten (D) weiterzuleiten, wobei derartige weiterleitende Knoten (s1, s2, s3, s4, s5, s6, s7, s8, s9) auf der Grundlage ihres geografischen Standorts in Bezug auf den Zielknoten (D) ausgewählt werden, und wobei die Netzwerkknoten in Bezug aufeinander synchronisiert werden, und Konfigurieren des Ruhe-Aktiv-Plans, sodass nur diejenigen weiterleitenden Knoten (s1, s2, s3, s4, s5, s6, s7, s8, s9), die zum Weiterleiten des Datenpakets in einem bestimmten Zeitfenster ausgewählt werden, in dem aktiven ...
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公开(公告)号：GB2511449A
公开(公告)日：2014-09-03
申请号：GB201408993
申请日：2012-11-20
Applicant: IBM
Inventor： MUNARI ANDREA , SCHOTT WOLFGANG HANS
Abstract: The present invention relates to a method for routing at least a data packet in a wireless sensor network (10), the wireless sensor network (10) comprising: at least a source node (S) that is configurable to transmit at least a data packet; at least a destination node (D) that is configurable to receive the data packet transmitted by the source node (S), and interconnectable network nodes (si) between the source node (S) and the destination node (D) that are configurable to receive and forward the data packet, the method comprising the steps of: operating the network nodes (si) according to a sleep-active schedule comprising at least a sleep mode and an active mode, and configuring the network nodes (si) to have information on their own geographic location and the geographic location of the destination node (D), the method further comprising the steps of: dividing the wireless sensor network (10) into a plurality of disjoint areas (A0, AM-1, A1, A2) that are separated by boundaries; separating each area (A0, AM-1, A1, A2) into at least two regions, the regions being an inner boundary region (I), a central region (C) and an outer boundary region (O); selecting forwarding nodes out of the network nodes (si) to route the data packet from the source node (S) to the destination node (D), such forwarding nodes being selected on the basis of their geographic location relative to the destination node (D) and the network nodes being synchronised relative to each other, and configuring the sleep-active schedule such that only those forwarding nodes that are selected to route the data packet in a given time window are operable in the active mode and all the other network nodes (si) are operable in the sleep mode.
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公开(公告)号：ES2132669T3
公开(公告)日：1999-08-16
申请号：ES95920184
申请日：1995-06-14
Applicant: IBM
Inventor： CHEVILLAT PIERRE RENE , CIDECIYAN ROY DARON , RUPF MARCEL , SCHOTT WOLFGANG HANS
Abstract: A system and method for the wireless transmission of data packets in a code division multiple access communication system wherein one of the code division multiple access channels (PRCH) is used in a time-shared fashion for the transmission of the data packets from several transmitting stations (MSy, MSz) to a receiving station (BS).A request is sent from a transmitting station (MSy) to the corresponding receiving station (BS) of the communication system indicating the destination address to which data packet(s) are to be routed.Then, registering the transmitting station (MSy) and assigning an unique virtual connection identifier (VCIy) to it.Next, the transmitting station (MSy) is attached to the code division multiple access channel (PRCH) used for the transmission of data packets.Then, listening to the downlink of the code division multiple access channel (PRCH) used for the transmission of data packets until the corresponding receiving station (BS) broadcasts that it will be "idle" such that a random access to the code division multiple access channel (PRCH) used for the transmission of data packets is allowed in the next frame.Next, the transnmission power of the transmitting station (MSy) is ramped up during the next frame until a certain power level is reached.The data packet(s) and the virtual connection identifier (VCIy) are transmitted over the uplink of the code division multiple access channel (PRCH) used for the transmission of data packets to the receiving station (BS).The data packet(s) are routed to the destination address.Access to the code division multiple access channel (PRCH) used for the transmission of data packets is controller by a multiple access protocol based on carrier sensing and collision detection (CSMA/CD).
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公开(公告)号：CA2223781A1
公开(公告)日：1997-01-03
申请号：CA2223781
申请日：1995-06-14
Applicant: IBM
Inventor： CIDECIYAN ROY DARON , CHEVILLAT PIERRE RENE , SCHOTT WOLFGANG HANS , RUPF MARCEL
Abstract: The present system is split into a physical layer (20), a data link layer, and a network layer (24). The data link layer is further split into three parts, namely, data link control (23), and two medium access control parts (DLC) (21 and 22). The DLC layer (23) is concerned with link establishment, release and maintenance. The lower MAC part (21) may exist in multiple instances, whereas the upper MAC part (22) is unique. Physically, the two MAC parts (21 and 22) are separated on the network side because the upper MAC part resides in a RNC while the lower part exists in each base station. The connectionless packet service (CLPS) entity (25.1) provides the packet radio service to the mobile user and the CLPS entity (25.2) on the netowrk side provides all facilities required for registration and authentication of mobile users, assigning and administrating their VCIs, and interfacing to a packet data network. The CLPS entities (25.1 and 25.2) use the logical link administrators (LLA) (26.x) to initially route messages via a regular dedicated control channel (DCCH) (27.x) to their peer entities. After the MS is attached to the PRCH, all messages exchanged between the CLPS entities (25.x) as well as user data packets are always directed via the respective PRCH (28.x). In this case, the control packets and user data packets are passed through the DLC (29.x) to the packet radio (PR) control entity (30.x). The packets are fragmented and protected with an error control code, e.g. a block code (BC), by a respective unit (31.x) for detecting transmission errors on the receiving side. Then they are convolutionally encoded, interleaved (IL) by the entity (32.x), and transmitted over the PDCH (33). On the receiving side the fragments are reconstructed from the received samples, reassembled to packets, and forwarded to the target CLPS entity (25.2). When the decoder (31.2) detects the receipt of an erroneous packet fragment, an automatic request for repetition (ARQ) scheme provided in the PR control requests its retransmission.
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Patent Agency Ranking
公开(公告)号：DE112012004936T5
公开(公告)日：2014-09-25
申请号：DE112012004936
申请日：2012-11-20
Applicant: IBM
Inventor： MUNARI ANDREA , SCHOTT WOLFGANG HANS
Abstract: Die vorliegende Erfindung betrifft ein Verfahren zum Weiterleiten von mindestens einem Datenpaket in einem drahtlosen Netzwerk (10), wobei das drahtlose Sensornetzwerk (10) aufweist: mindestens einen Quellenknoten (S), der so konfigurierbar ist, dass er mindestens ein Datenpaket überträgt; mindestens einen Zielknoten (D), der so konfigurierbar ist, dass er das Datenpaket empfängt, das durch den Quellenknoten (S) übertragen wird, und untereinander verbindbare Netzwerkknoten (si) zwischen dem Quellenknoten (S) und dem Zielknoten (D), die so konfigurierbar sind, dass sie das Datenpaket empfangen und weiterleiten, wobei das Verfahren die folgenden Schritte aufweist: Betreiben der Netzwerkknoten (si) gemäß einem Ruhe-Aktiv-Plan, der mindestens einen Ruhemodus und einen aktiven Modus aufweist, und Konfigurieren der Netzwerkknoten (si), sodass sie über Informationen über ihren eigenen geografischen Standort und den geografischen Standort des Zielknotens (D) verfügen, wobei das Verfahren ferner die folgenden Schritte aufweist: Aufteilen des drahtlosen Sensornetzwerks (10) in eine Vielzahl von nicht zusammenhängenden Bereichen (A0, AM-1, A1, A2), die durch Grenzen getrennt sind; Trennen jedes Bereichs (A0, AM-1, A1, A2) in mindestens zwei Regionen, wobei die Regionen eine innere Grenzregion (I), eine zentrale Region (C) und eine äußere Grenzregion (O) sind; Auswählen von weiterleitenden Knoten (si) aus den Netzwerkknoten, um das Datenpaket von dem Quellenknoten (S) zu dem Zielknoten (D) weiterzuleiten, wobei derartige weiterleitenden Knoten auf der Grundlage ihres geografischen Standorts in Bezug auf den Zielknoten (D) ausgewählt werden, und die Netzwerkknoten in Bezug zueinander synchronisiert werden, und Konfigurieren des Ruhe-Aktiv-Plans, sodass nur diejenigen weiterleitenden Knoten, die ausgewählt werden, um das Datenpaket in einem bestimmten Zeitfenster weiterzuleiten, in dem aktiven Modus betriebsfähig sind und alle anderen Netzwerkknoten (si) im Ruhemodus betriebsfähig sind.
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公开(公告)号：CA2223781C
公开(公告)日：2002-05-21
申请号：CA2223781
申请日：1995-06-14
Applicant: IBM
Inventor： SCHOTT WOLFGANG HANS , CHEVILLAT PIERRE RENE , RUPF MARCEL , CIDECIYAN ROY DARON
Abstract: The present system is split into a physical layer (20), a data link layer, and a network layer (24). The data link layer is further split into three parts, namely, data link con- trol (23), and two medium access control parts (DLC) (21 and 22). The DLC layer (23) is concerned with link establishment, release and maintenance. The lower MAC part (21) may exist in multiple instances, whereas the upper MAC part (22) is unique. Physically, the two MAC parts (21 and 22) are separated on the network side because the upper MAC part resides in a RNC while the lower part exists in each base sta- tion. The connectionless packet ser- vice (CLPS) entity (25.1) provides the packet radio service to the mobile user and the CLPS entity (25.2) on th e netowrk side provides all facilities required for registration and authentication of mobile users, assigning and administrating their VCIs, and interfacing to a packet data network. The CLPS entities (25.1 and 25.2) use the logical link administrators (LLA) (26.x) to initiall y route messages via a regular dedicated control channel (DCCH) (27.x) to their peer entities. After the MS is attached to the PRCH, all messages exchanged between the CLPS entities (25.x) as well as user data packets are always directed via the respective PRCH (28.x). In this cas e, the control packets and user data packets an passed through the DLC (29.x) to the packet radio (PR) control entity (30.x). The packets a re fragmented and protected with an error control code, e.g. a block code (BC), by a respective unit (31.x) for detecting transmission erro rs on the receiving side. Then they are convolutionally encoded, interleaved (IL) by the entity (32.x), and transmitted over the PDCH (33). O n the receiving side the fragments are reconstructed from the received samples reassembled to packets, and forwarded to the target CLPS entity (25.2). When the decoder (31.2) detects the receipt of an erroneous packet fragment, an automatic request for repetition (ARQ) sche me provided in the PR control requests its retransmission.
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公开(公告)号：DE3676825D1
公开(公告)日：1991-02-14
申请号：DE3676825
申请日：1986-08-05
Applicant: IBM
Inventor： HIRT WALTER , SCHOTT WOLFGANG HANS
Abstract: In the readback apparatus of a magnetic recording system operating in accordance with the partial-response maximum-likelihood (PRML) technique, a variable-gain amplifier (VGA) and a maximum-likelihood sequence detector (ML DET) plus a gain control loop are provided. The detector (19) is designed to operate on input signals (y min ) having nominal discrete signal amplitudes (a, 0, -a) and it furnishes discrete output signals ( @) having such nominal signal amplitudes. The gain control loop is responsive to input (27) and output (29) signals of the detector, and it has charge-pump circuitry (37, 39, 41, 43) for generating a gain control signal (Vc = Vg) for the variable gain amplifier (35). To enable proper operation of the system even in case of short-time signal amplitude drops due to media defects, biasing means (49) are provided such that the gain (g) is adjusted to a value which causes the signal amplitudes at the input (27) of the detector to be weighted multiples (ca, 0, -ca) of the nominal amplitude values (a, 0, -a).
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公开(公告)号：PL324002A1
公开(公告)日：1998-04-27
申请号：PL32400295
申请日：1995-06-14
Applicant: IBM
Inventor： CHEVILLAT PIERRE RENE , CIDECIYAN ROY DARON , RUPF MARCEL , SCHOTT WOLFGANG HANS
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10.发明专利
公开(公告)号：SG42862A1
公开(公告)日：1997-10-17
申请号：SG1996000246
申请日：1992-05-20
Applicant: IBM
Inventor： COKER JONATHAN DARREL , DOLIVO FRANCOIS BERNARD , GALBRAITH RICHARD LEO , SCHOTT WOLFGANG HANS , ZIPEROVICH PABLO ALEJANDRO
Abstract: A method and apparatus are provided for controlling a digital filter function included in a data path within gain and timing control loops of a PRML magnetic recording channel. The digital filter function is removed from the data path during an acquisition mode and the digital filter function is restored to the data path during a tracking mode. A predetermined gain and a quantized delay at a synchronization frequency are provided when switching from acquisition mode to tracking mode. A unity gain and a delay of an integer number of sample periods are provided at a synchronization frequency when switching from acquisition mode to tracking mode.
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