Nokia Corporation

Nokia Technologies Oy

Nokia Mobile Phones Limited

Qualcomm Incorporated

Jari Vallström

Markku K Vimpari

Pekka Kuure

Harri Lilja

Janne J Kallio

Antti Lilja

Mika Maarala

Kristian Rosberg

Kai Nybacka

Marko Viitamäki

Juha Väänänen

Timo Vittaniemi

Marko Kainulainen

Timo Nisula

Heikki Kesti

Benoist Sebire

Hannu Töyrylä

Richard Bontempi

Simo Hyytiä

Marko Saarenpää

Anne Elsilä

Sanna Raitanen

Hannu TÖYRYLÄ

The invention relates to method applicable in a packet-switched cellular network for voice connections, by which method a new dedicated channel can be established quickly using the existing dedicated channel of the voice connection. The establishment of the new dedicated channel utilizes the previous dedicated channel the existence of which is extended by sending to at least the receiving terminals post-speech packets according to the invention. The post-speech packets produce a 2-second delay, approximately, which is sufficient to establish a new dedicated channel between terminals participating in a session.

Method for establishing packet-switched connection, and cellular network utilizing the method, and cellular terminal

A data transmission method between at least two mobile communication devices is provided, a communication device comprising a first and a second transceiver. The first transceiver communicates with a transceiver of another device with a data rate higher than that of the second transceiver, and the second transceiver communicates with a transceiver of another device with power consumption level lower than that of the first transceiver. The device is configured to communicate with another communication device using the first transceiver when data is to be transmitted between devices; stop using the first transceiver when data transmission ceases, and communicate with another communication device using the second transceiver to set up the use of first transceiver when a need to send data arises.

Communication device and data transmission method between at least two communication devices

The object of the invention is a method for controlling the power saving properties in a terminal, which utilizes cellular phone technology and short range radio frequency wireless communication features in order to increase the operative life of the batteries, and a terminal utilizing the method. In the method of the invention the activity state of the short range wireless communication utilization in the terminal determines the level of the short range wireless communication power save mode.

Method for saving power in a wireless terminal and a terminal

The invention relates to a method for ensuring the adequacy of transmission capacity in a digital packet-switched cellular network where both voice sample packets and associated header fields are transmitted in real time in one and the same transmission channel. The invention also relates to a terminal employing the method. In the method, the contents of voice sample packets at the beginning of a speech spurt are partly replaced by packet header field data in situations where the combined bit count of voice sample data and packet header data exceeds the transmission capacity of the transmission channel.

Method for ensuring adequacy of transmission capacity, terminal employing the method, and software means for implementing the method

A method of indicating about an incoming connection and a radio terminal equipment arrangement including a cellular core unit having a control unit and one or more peripheral units is provided. The control unit is configured to indicate the incoming connection in one or more peripheral units but not in the cellular core unit, when the LPRF connection between the cellular core unit and the peripheral unit is available; and to indicate the incoming connection in the cellular core unit, when the LPRF connection between the cellular core unit and the peripheral unit is not available and to indicate the incoming connection in the peripheral unit, when the LPRF connection between the cellular core unit and the peripheral unit becomes available.

Method and radio terminal equipment arrangement of indicating incoming connection

The invention relates to a protocol converter () and a method utilizing the converter, enabling a wireless connection () between a cellular network () and a terminal to apply a reduced RTP protocol according to the invention, instead of the RFC 1889 protocol, in order to save communications capacity on speech connections.

Hardware arrangement, terminal, and method for transferring audio signal in packet-switched communications network

The invention relates to a method and subscriber equipment of controlling transmission power in the transmitter. The subscriber equipment transmits bursts with different activity. The subscriber equipment forms an average activity of the transmitter, and controls transmission power of the bursts as a function of the average activity of the transmitter.

Method of controlling transmission power and subscriber equipment

The object of the invention is a method for determining channel information in a cellular system, where user information is transmitted in information frames transmitted by the base station of the current cell, and in which method neighbor cell base station information is received () for the synchronizing to the neighbor cell base station. In a method according to the invention the Base Station Identity Code (BSIC) information is received and examined () only outside the TDMA frames used to transmit the information. Said code information is stored in the memory of the mobile station for the period of the TDMA frames used to transmit information. The method is also advantageously used in a Wireless Local Loop terminal utilizing HSCSD protocol for determining and storing channel information. When the method according to the invention is used a WLL terminal needs no extra frequency synthesizer for performing the neighbor cell monitoring.

Method to determine channel information in a cellular system, and a mobile station

A method is disclosed for operating a wireless TDMA communications system. The method includes steps of monitoring a propagation delay of a mobile station; and when the propagation delay exceeds a predetermined limit, changing by a time slot unit a value of one or both of T and T , wherein T is a minimum number of time slots allowed between the end of a last, previous receive time slot and a first, next transmit time slot, when a channel measurement is to be performed in between, and wherein T is a minimum number of time slots allowed between the end of a last, previous receive time slot and a first, next transmit time slot.

Wireless telecommunications system employing dynamic multislot class

Growing community of inventors

Oulu, Finland

Jari Vallström