Abstract: The present invention is a method for performing a mobile user terminal route update in a telecommunication network operated based on the Internet Protocol, the network comprising at least two network transceiver device gateways each communicating with at least one mobile user terminal, at least one routing element providing a route for a communication connection between a mobile first user terminal and a second user terminal, the second user terminal communicating via a border gateway and the at least one routing element with mobile first user terminal, and wherein each user terminal is identified by an Internet Protocol address, the method comprising the steps of detecting an occurrence of a handoff condition for the mobile first user terminal for a handoff from a first one to a second one of the at least two network transceiver device gateways, initiating a handoff procedure at the mobile first user terminal, the first and the second network transceiver device gateways and the border gateway, and the trans

Abstract: A method is disclosed for multiplexing a plurality of data flows onto a radio channel, as is a wireless communication system that operates in accordance with the method. The method includes steps of (a) segmenting data packets of a first data flow into radio blocks; b) in response to a required transmission of data packets of a second data flow, signaling in a first field a change in data flows; (c) signaling in a second field an identity of the second data flow; and (d) segmenting data packets of the second data flow into radio blocks and transmitting the radio blocks of the second data flow. The method further includes steps of (e) changing back to transmitting the first data flow; and (f) continuing the transmission of an incompletely transmitted packet of the first data flow.

Abstract: A distributed transmitting apparatus and a method are provided in a communications system in which retransmission of data frames can be requested by a receiver. According to the method, a transmitting unit in the distributed transmitting apparatus transmits data frames to a receiver and stores the transmitted data frames. The apparatus further includes a control unit which transmits the data frames to the transmitting unit for transmission to the receiver, and further the control unit transmits control data to the transmitting unit for controlling retransmission of the data frames, wherein the control unit controls the transmitting unit to retransmit data frames stored in the transmitting unit to the receiver.

Abstract: The present invention is a method for scheduling of plural packet data flows transmitted via a single transmission resource, wherein each data flow uses a retransmission scheme providing for retransmission of packet data of a respective flow for which a positive acknowledgment of delivery of packet data to a destination was not obtained. The method includes allocating one of the plural data flows to the single transmission resource for transmission, the data flow comprising a number of data packets, first detecting that a number of data packets has been transmitted via the transmission resource, and in response thereto, generating an acknowledgment message including the acknowledgment status of each of number of data packets and allocating another one of the plural data flows to the single transmission resource.

Abstract: The invention relates to a data transmission method and a radio system that comprises a first (260) transceiver and a second transceiver (264) that are in radio contact with each other. The first transceiver (260) comprises means (500, 504) for forming data blocks for transmission in such a manner that the data blocks are given identifiers for identification. The second transceiver (264) comprises means (512) for receiving data blocks transmitted and retransmitted by the first transceiver, and means (524) for detecting a failure in receiving a data block. The second transceiver (264) comprises means (530) for maintaining information on the position of a window belonging to a finite identifier space, and means (524) for comparing the identifiers of the re-received data block and the earlier received data block with each other and for defining the data blocks as the same, and means (524) for combining the data blocks defined as the same.

Abstract: The invention relates to a data transmission method and a radio system that comprises a first (260) transceiver and a second transceiver (264) that are in radio contact with each other. The first transceiver (260) comprises means (500, 504) for forming data blocks for transmission in such a manner that the data blocks are given identifiers for identification. The second transceiver (264) comprises means (512) for receiving data blocks transmitted and retransmitted by the first transceiver, and means (524) for detecting a failure in receiving a data block. The second transceiver (264) comprises means (530) for maintaining information on the position of a window belonging to a finite identifier space, and means (524) for comparing the identifiers of the re-received data block and the earlier received data block with each other and for defining the data blocks as the same, and means (524) for combining the data blocks defined as the same.

Abstract: The invention relates to a method for controlling data transmission in a communication system transmitting data in packet format between a first (142, 162) and a second (170) transceiver on at least one physical channel. To transmit data blocks between the first and the second transceiver, at least one logical connection is established, each logical connection using ARQ error correction and a related transmission window. The number of logical connections is selected on the basis of the number of data blocks per unit of time, which can be transmitted between the first and the second transceiver.

Abstract: A method is disclosed for multiplexing a plurality of data flows onto a radio channel, as is a wireless communication system that operates in accordance with the method. The method includes steps of (a) segmenting data packets of a first data flow into radio blocks, b) in response to a required transmission of data packets of a second data flow, signaling in a first field a change in data flows; (c) signaling in a second field an identity of the second data flow; and (d) segmenting data packets of the second data flow into radio blocks and transmitting the radio blocks of the second data flow. The method further includes steps of (e) changing back to transmitting the first data flow; and (f) continuing the transmission of an incompletely transmitted packet of the first data flow.

Abstract: The present invention relates to a method for scheduling of plural packet data flows transmitted via a single transmission resource, wherein each data flow adopts a retransmission scheme providing for retransmission of packet data of a respective flow for which packet data a positive acknowledgment of delivery to a destination was not obtained, the method comprising the steps of: allocating one of said plural data flows to said single transmission resource for transmission, said data flow comprising a number of packet data, first detecting that a certain number of packet data has been transmitted via said transmission resource, and in response thereto, generating an acknowledgment message including the acknowledgment status of each of said certain number of packet data and allocating another one of said plural data flows to said single transmission resource.

Abstract: The present invention is a method for performing a mobile user terminal route update in a telecommunication network operated based on the Internet Protocol, the network comprising at least two network transceiver device gateways each communicating with at least one mobile user terminal, at least one routing element providing a route for a communication connection between a mobile first user terminal and a second user terminal, said second user terminal communicating via a border gateway and said at least one routing element with said mobile first user terminal, and wherein each user terminal is identified by an Internet Protocol address, said method comprising the steps of detecting an occurrence of a handoff condition for said mobile first user terminal for a handoff from a first one to a second one of said at least two network transceiver device gateways, initiating a handoff procedure at the mobile first user terminal, the first and the second network transceiver device gateways and the border gateway, and

Abstract: A method of signaling which data blocks can be combined together in an incremental redundancy communication system includes a transmitter device and a receiver device. The method includes transmitting the blocks from a transmitter device to a receiver device. Each transmitted data block includes an information indicating whether a respective data block is transmitted for a first time or is a retransmitted block. At the receiver device, a check is made to see whether the transmission of a respective data block has failed. If the transmission of said respective block has failed, retransmission is made. In response to receiving the retransmission request at the transmitter device side, the information is set to a value indicating that the respective data block is a retransmitted block. A header is added to the data block to be retransmitted, the header representing a reference to a physical location of an earlier transmission of said block in a sequence of transmitted blocks.

Abstract: The invention relates to a method of transmitting data in a radio system from a transmitter to a receiver, and to a radio system using the method, a radio transmitter and a radio receiver. A transmitter (260) comprises a channel coder (202) for channel coding a data block into a coded data block by using a selected channel coding and for puncturing the coded data block by using a first puncturing pattern, and transmission means (204) for transmitting the coded data block punctured by the first puncturing pattern to a receiver (264). The receiver (264) comprises a channel decoder (218) for decoding the received coded data block, means (224) for detecting a need for retransmission of the received coded data block, and means (204) for transmitting a retransmission request of the coded data block to the transmitter (260).

Abstract: The present invention discloses a distributed transmitting apparatus and method in a communications system in which retransmission of data frames can be requested by a receiver MS. According to the present invention, a transmitting unit CCU in the distributed transmitting apparatus transmits data frames to a receiver MS and stores the transmitted data frames. The apparatus further comprises a control unit PCU which transmits data frames to the transmitting unit CCU for transmission to the receiver MS, and further transmits control data to the transmitting unit CCU for controlling retransmission of data frames, wherein the control unit PCU controls the transmitting unit CCU to retransmit data frames stored in the transmitting unit CCU to the receiver MS.

Abstract: The present invention proposes a method of signaling which data blocks can be combined together in an incremental redundancy communication system consisting of a transmitter device and a receiver device, the method comprising the steps of: transmitting said blocks from a transmitter device to a receiver device, with each transmitted data block including an information indicating whether a respective data block is transmitted for a first time or is a retransmitted block; checking, at said receiver device, whether the transmission of a respective data block has failed; requesting a retransmission of said data block from the transmitter device if said transmission of said respective block has failed, and in response to receiving said retransmission request at the transmitter device side, setting said information to a value indicating that said respective data block is a retransmitted block, and adding at least one header to said data block to be retransmitted, said header representing a reference to a physical l

Abstract: The invention relates to a method and an apparatus implementing the method for improving the performance of a radio system using interleaving. In the method of the invention the interleaving depth and the type of interleaving method are selected specifically for each symbol block, the interleaving depth and the interleaving method type of the symbol blocks are signalled to a receiver in order to remove the interleaving, and the interleaving of the symbol blocks is removed using de-interleaving in the receiver. The method of the invention allows to combine rectangular interleaving and diagonal interleaving more efficiently without some blocks remaining partly empty and simultaneously to restrict the delay created in interleaving. The interleaving depth can also be selected block-specifically.

Abstract: The invention relates to a method of transmitting data in a radio system from a transmitter to a receiver, and to a radio system using the method, a radio transmitter and a radio receiver. A transmitter (260) comprises a channel coder (202) for channel coding a data block into a coded data block by using a selected channel coding and for puncturing the coded data block by using a first puncturing pattern, and transmission means (204) for transmitting the coded data block punctured by the first puncturing pattern to a receiver (264). The receiver (264) comprises a channel decoder (218) for decoding the received coded data block, means (224) for detecting a need for retransmission of the received coded data block, and means (204) for transmitting a retransmission request of the coded data block to the transmitter (260).

Abstract: The invention relates to a coding method of signalling information in a packet radio system and to a packet radio system, which comprises at least one base station and subscriber terminal, in which signals to be transmitted on a radio connection between the base station and the subscriber terminal form blocks, which comprise bursts consisting of symbols, the burst comprising a training sequence in which modulation information is included. The invention is characterized in that signalling information is coded together with the modulation information relating to the whole block into the training sequences of the block. Coding enables e.g. a higher data transmission rate because it is not necessary to reserve data bits for coding of uplink state flags, for example.