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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：PL178412B1
公开(公告)日：2000-04-28
申请号：PL32400295
申请日：1995-06-14
Applicant: IBM
Inventor： CHEVILLAT PIERRE R , CIDECIYAN ROY D , RUPF MARCEL , SCHOTT WOLFGANG H
Abstract: A method for wireless transmission of data packets in code division multiple access communication system and communication system with transmitter-receiver of a transmitting station on mobile site in a code division multiple access communication system where one of the channels with code division multiple access is used on time division basis to transmit data packets from many transmitters to a receiver characterised by a fact, that a request is sent from a transmitting station (Msy) to appropriate receiving station (BS) of a communication system, this request indicates a target address a packet or packets of data are to be directed to. This station is assigned a unique virtual connection identifier (VCIy), switches a transmitting station (Msy) to a (PRCH) channel with code division multiple access for transmitting data packets a downstream link on a code division multiple access channel (PRCH) is monitored, until a base station (BS) broadcasts that it will be free and in the next frame free access to a code division multiple access channel (PRCH) will be permitted, a power of a transmitting station (Msy) is increased during the next frame until a given power is attained, a data packet or packets and a virtual connection identifier (VCIy) are transmitted through an upstream link of a code division multiple access channel (PRCH) for transmission of data packets to a base station (BS) and a data packet or packets are redirected again to a target address with an access to code division multiple access channel (PRCH) for transmission of data packets is controlled by a multiple access protocol based on carrier detection and collision detection.
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Patent Agency Ranking
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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公开(公告)号：DE69509804T2
公开(公告)日：1999-12-09
申请号：DE69509804
申请日：1995-06-14
Applicant: IBM
Inventor： CHEVILLAT PIERRE , CIDECIYAN ROY , RUPF MARCEL , SCHOTT WOLFGANG
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：DE69509804D1
公开(公告)日：1999-06-24
申请号：DE69509804
申请日：1995-06-14
Applicant: IBM
Inventor： CHEVILLAT PIERRE , CIDECIYAN ROY , RUPF MARCEL , SCHOTT WOLFGANG
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：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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