Telefonaktiebolaget Lm Ericsson (publ)

Johan Sk&ouml;ld

Peter Schramm

H&aring;kan Gunnar Olofsson

Carl Magnus Frodigh

Mikael H{umlaut Over (oo)}k

Frank Muller

Frank M&uuml;ller

A bit rate indicator for use in the mobile station of a radiotelephone system which provides an indication to the user of the maximal bit rate available in the current cell and the predicted bit rate the user can expect to achieve if a session were initiated in his present location. In calculating the maximal bit rate, the mobile station receives a message from the base station indicating the base station's capabilities, such as support for multi-slot operations and coding/modulation schemes. The mobile station then uses the base station's capabilities along with its own capabilities to determine the maximal bit rate. In calculating predicted bit rate, the mobile station measures the link quality of at least one channel and based on, at least one of, the measured link quality and mobile's capabilities, determines a predicted bit rate the user would achieve in his present location. Both the maximal and predicted bit rates can be outputted on the mobile station for comparison by the user. This information can be used to effectively direct the user to the location in a cell with the best link quality. The present invention may be especially useful when using a mobile station to interface with the Internet.

Terminal bitrate indicator

Balanced diversity

A method of communicating control information in systems that support multiple modulation schemes for communicating voice or data and control information. To provide backward compatibility dedicated control channels use the modulation scheme used in current systems, for example GMSK modulation scheme. Traffic channels and associated control channels use linear modulation schemes that have the same symbol rate. The modulation scheme of the associated control channel uses a reduced signal set of the modulation scheme used for traffic channels. Also, an in-band signalling procedure is used to indicate to a receiving station the modulation type, channel coding and speech coding used for a transmitted burst.

Method for communicating information in a communication system that supports multiple modulation schemes

Growing community of inventors

Åkersberga, Sweden

Johan Sköld

Growing community of inventors

Åkersberga, Sweden

Johan Sk&ouml;ld

Johan Sköld