Siemens Aktiengesellschaft

Nokia Siemens Gmbh & Co. Kg

Stefan Oestreich

Michael Faerber

Wen Xu

Meik Kottkamp

Thomas Ulrich

Anja Klein

Hans Juergen Kroener

Joachim Hagenauer

Volker Sommer

Thomas Hindelang

Steffen Junghanns

Claudia Vallentin

Jean-Michel Traynard

Michael Benz

Reinhard Koehn

Armin Sitte

Holger Landenberger

Franz Goldhofer

Joern Krause

Sebastian Obermanns

Hans Kröner

The transmission output of two channels of a first link is adjusted so that data from the first link is simultaneously transmitted by two channels. The transmission outputs of the two channels are adjusted to a common value which is dependent upon the value of a quality parameter of the data transmission of the first channel and the value of a quality parameter of the data transmission of the second channel.

Method for adjusting the transmission outputs of two channels of a link station and communication system

When a request is sent by a switching unit, relating to the use of at least one subset of a codec mode configuration for the establishment of a transcoder-free operation connection by a radio network controller, it is checked whether the at least one requested subset is supported by the radio network controller. If the at least one subset of at least one codec mode configuration is supported, a transcoder-free operation connection to the switching unit and to the communication terminal is established by the radio network controller. Furthermore, a message relating to the at least one subset of the codec mode configuration to be used is signalled from the radio network controller to the communication terminal for the transmission of data.

Establishment of a transcoder-free operation connection

First of all, data (D) of the link is transmitted via a first channel (CH), while the quality of the data transmission is adjusted by correspondingly varying output power (P). Data (D) of the link is then transmitted via a second channel (CH), wherein the output power (P) is initially set to a value (P) which is dependent upon the value (P) of the output power at the end of transmission via the first channel (CH) and upon a modification of the reception conditions of the link during the changeover from the first channel (CH) to the second channel (CH).

Method for adjusting the output power for a radio link which uses two different channels, and corresponding radio station

In a cellular radio communication system that supports in each of its cells a plurality of different codec modes for the purpose of radio transmission, the terminals working in a cell and a base station of the cell refer to the information relating to the use of codec modes as CM information. The extent of use of the individual codec modes is registered by filtering the pieces of CM information from the data traffic of the cell and collecting them in a memory in cell-related statistics.

Method for monitoring the transmission quality in a cellular radio communication system

A method is provided for transmission power control and a radio communications system having at least one first and one second station which communicate with each other, wherein a receiving one of the stations determines the reception power of a signal which is sent from the other station, and the transmitting station transmits a power control instruction, with the receiving station using a signal which is independent of communication data in order to determine the power control instruction.

Power control in mobile radio telephone systems when transmission is interrupted

According to the invention, transmissions of the second radio station are received in the first radio station in which the operating instruction for transmission power of the second radio station is determined. The operating instruction is transmitted during a following transmission of the first radio station to the second radio station, whereupon the latter takes into account the operating instruction for power regulation during one of its following transmissions. Contrary to prior art, no time invariable or fixed step size is used. An operating instruction is used instead which is related to a variable step size in transmission power regulation. The variable step size is subscriber-dependent and time-dependent regulated by the radio stations.

Method and radio communication system for regulating power between a base station and a subscriber station

A radio diversity method in which a first received signal is received by a first antenna and a second received signal is received by a second antenna. The first received signal and the second received signal are converted from an analog format to a digital format. Digital signal values are in each case detected, with quality levels being defined in each case for the digital signal values. An evaluation device evaluates the quality levels and, depending on the evaluation result, passes on only portions of the digital signal values for subsequent combination. This reduces the data rate that needs to be transmitted, for example, during a soft hand over.

Reception diversity method, and a radio communication system using diversity reception

A method for voice transmission via a radio interface in a digital radio communication system includes the step of transmitting at least one signal between a base station of a base station system and a radio station. At least one characteristic value relating to the transmission conditions of the radio interface is determined from this signal. The characteristic value is stored in at least one storage device and is taken into account at a later point in time in addition to currently determined characteristic values for a voice and channel coding on the transmitter side. A base station system for voice transmission via a radio interface in a digital radio communication system is also provided.

Method and base station system for voice transmission via a radio interface in a digital radio communication system

A speech coder/decoder can select a broadband and a narrowband speech coding method. For a connection to a mobile station, a monitoring of transmission possibilities is performed, and, given limited transmission possibilities, there is a changeover from broadband to narrowband speech coding methods. The received narrowband speech information is expanded to a greater bandwidth at the receive side. The subjective speech impression is improved by the bridging of this changeover effect. This guarantees an improved speech quality to the listener, particularly with the introduction of adaptive multirate coding.

Method and radio communication system for transmitting speech information using a broadband or a narrowband speech coding method depending on transmission possibilities

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Holzkirchen, Germany

Stefan Oestreich