Nokia Telecommunications Oy

Nokia Corporation

Nokia Mobile Phones Limited

Hannu Hakkinen

Ari T Hottinen

Seppo Hamalainen

Seppo Granlund

Timo Laakso

Antero Alvesalo

Ilkka Antero Keskitalo

Esa Mikael Malkamaki

Mika P Rinne

Esa Mikael Malkamäki

Harri Holma

Zhi-Chun Honkasalo

Mikko J Rinne

Oscar Salonaho

Petri Antero Jolma

Kari Rikkinen

Anu Virtanen

Arto Kiema

Risto Uola

Jari Savusalo

Ingo Kuhn

Jere Keurulainen

Ari Karkkainen

Anne Siira

Kari Pehkonen

Mikko Toivonen

Aimo Tuoriniemi

A method and an arrangement are provided for timing a change of diversity weights in a radio connection between a base station and a terminal. A response timing mode is selected from a number of predefined response timing modes. The terminal is informed about the selected response timing mode. An initiation is received from the terminal and it is responded to the initiation by changing certain diversity weights so that the exact moment of time for effecting the change is determined by the selected response timing mode.

Method and arrangement for timing the diversity weight changes in a cellular radio system

The present invention proposes a method for data transmission in a cellular telecommunication system, in which system data are transmitted in units of bursts, each burst occupying a time slot (TS[j]) of one of consecutive frames (F[i]), each respective frame comprising a predetermined number (n) of time slots (TS[j]), j={(0, . . . , n&#x2212;1}), and, within a single time slot (TS[j]) of each frame (F[i]), data can be transmitted between a first transceiver device (BS) and a respective one of a plurality of second transceiver devices (MS) in a first transmission direction (DL) from said first transceiver device (BS) to said respective second transceiver device (MS) or in a second transmission direction (UL) from said respective second transceiver device (MS) to said first transceiver device (BS), wherein during a first frame (F[i]) of consecutive frames respective second transceiver devices (MS) perform transmission with said first transceiver device (BS) during a time slot (TS[k]) assigned thereto for transmission, and during a subsequent second frame (F[l=1]) of said consecutive frames, respective second transceiver devices (MS) perform transmission with said first transceiver device (BS) during a different time slot (TS[) assigned thereto for transmission, with 0&#x2266;k, 1&#x2266;n&#x2212;1 and k#1.

Method for data transmission in a cellular telecommunication system

A connection establishment method for establishing a random access type connection using a random access channel, which is used in a radio system having several subscriber terminal equipments (to) and base stations (to) where one or more transceiver units (to) operate, and in which system connection establishment between one of the subscriber terminal equipments (to) and the base station (to) is possible when the one subscriber terminal equip nt (to) is situated in the coverage area of one or more transceiver units (to) of the base station, where the one subscriber terminal equipment (to) evaluates the quality of the connections to be established. Starting from a condition in which no connection is established with the one subscriber terminal equipment, the one subscriber terminal equipment (to) forms a random access type connection to more than one base station transceiver unit (to) included in one or more base stations (to).m

Establishment of a connection between a base station and a mobile station using random access channels

A method () and corresponding equipment, the method for enabling a Node B/base station () to distinguish different states&#x2014;HARQ active states and a DTX (non-transmitting) state&#x2014;of a UE () in respect to use of the feedback HSDPA (high-speed downlink packet access) channel HS-DPCCH over which the UE () sends acknowledgement messages (ACK/NACK) to the Node B () in response to receiving packets via the HSDPA (downlink) data channel HS-DPCH, the method including steps () in which the UE () additionally sends preamble symbols if an acknowledgement message (ACK/NACK) is to be sent in a next time interval but not in the current time interval, and at least one postamble symbol prior to the UE () entering the non-transmitting state (DTX).

Method and apparatus for HS-DPCCH signalling with activity information in HSDPA

The idea of the invention is the allocation of transmission resources in several separate steps. In the first step, the available transmission resources are dynamically divided between the different networks. In the second step, the networks divide the resources that have been allocated for their use among their users by their own channel allocation methods. In one embodiment, a given minimum capacity wherewith the network achieves a predetermined minimum quality of service is permanently allocated to some or all of the networks. As the capacity requirement increases, the necessary amount of additional capacity is allocated to the operator in excess of this minimum capacity. The additional capacity is then allocated either from resources separately reserved for this purpose that are common to the networks, or by borrowing it from capacity that is allocated to another network but falls outside the minimum capacity of said network. In accordance with one embodiment, an upper limit is set for the transmission capacity allocated to a network, in excess of which no capacity can be allocated to the network. The dynamic distribution of capacity between networks can be realized either in a centralized or in a distributed manner. If the division is performed in a distributed manner for example in such a way that each network independently allocates a band to itself, the algorithms used in the different networks must be compatible.

Allocation of data transmission resources between different networks

Data transmission method, and a cellular radio system

Connection establishment method and radio system

Power control method in a cellular communication system, and a receiver

Method for interference cancellation in a cellular CDMA network

A method for controlling transmission power of a radio transmitter in a cellular communications system, such as in a CDMA-system, which includes determining a reference value (SIR.sub.m) indicating the quality of the signals received from the radiotransmitter, determining a reference value (P.sub.m, SIR.sub.pm) indicating the current traffic load in the radiocell, and commanding the radio transmitter to adjust transmission power. In order to improve speed and reliability during any traffic conditions the method includes comparing both the reference value (SIR.sub.m) for the quality of the received signals, and the reference value (P.sub.m, SIR.sub.pm) for the traffic load with predetermined target values (SIR.sub.t, P.sub.t, SIR.sub.pt), and practicing the commanding of the radio transmitter to adjust its transmission power depending on the result of the comparison.

Method and apparatus for controlling transmission power of a radio

Method for starting a radio transmitter, and a radio transmitter using a

The invention relates to a method for improving the reliability of a handover and call establishment in a cellular radio system which comprises at least one base station in each cell, and a group of subscriber terminal equipments which communicate with one or more base stations. The base stations measure the total interference level of signals they have received from the terminal equipments, and transmit a pilot signal with a known transmit power. The terminal equipments measure the power levels of pilot signals received from different base stations. In the system at least some transceivers comprise circuitry for estimating, by means of the pilot signals, the path loss between the terminal equipment and the base stations. To improve the reliability of the handover and call establishment, at least some transceivers in the system of the invention estimate the signal to noise ratio between the terminal equipment and the base station in the uplink transmission direction on the basis of the total interference measured at the base station, the path loss, and the terminal equipment transmit power.

Method for improving the reliability of a handover and call

Growing community of inventors

Espoo, Finland

Hannu Hakkinen