Abstract: An efficient way is described for a user equipment, camping on a cell of a first radio access technology, RAT, to perform measurements on the transmissions from a neighboring radio cell of a different RAT. Recurrent time gaps that are available for making the measurements are not correlated or synchronized with the recurrent times at which the desired information are transmitted by the transmitter in the second RAT. Therefore, mapping is performed of the time gaps onto the interval at which the desired information is transmitted. The mapping continues until a time interval is covered that ensures that the information in the recurring desired block of information can be obtained. During the mapping of the measurement gaps, only those time intervals that have not already been covered by the mapping are used for obtaining the desired information.

Abstract: An efficient way is described for a user equipment, camping on a cell of a first radio access technology, RAT, to perform measurements on the transmissions from a neighbouring radio cell of a different RAT. Recurrent time gaps that are available for making the measurements are not correlated or synchronized with the recurrent times at which the desired information are transmitted by the transmitter in the second RAT. Therefore, mapping is performed of the time gaps onto the interval at which the desired information is transmitted. The mapping continues until a time interval is covered that ensures that the information in the recurring desired block of information can be obtained. During the mapping of the measurement gaps, only those time intervals that have not already been covered by the mapping are used for obtaining the desired information.

Abstract: The present invention provides a method of PLMN selection subsequent to a change in cell for a mobile radio communications device in a multi-network cellular environment, the method including the steps of monitoring system information within a mobile radio communications device to determine the availability of a HPLMN or any other higher priority PLMN than current registered PLMN, and selecting the said HPLMN or higher priority PLMN than current registered PLMN if identified as available, and also a related network-sharing-capable UE that, when registered with a visitor PLMN, can readily check the availability of its HPLMN or any other higher priority PLMN in the system information whenever it moves to a new location area and, assuming the HPLMN or higher priority PLMN to be found, can then reselect to that PLMN.

Abstract: The present invention provides for a method of forming at least one ARQ PDU from an ARQ service data unit (SDU), the ARQ PDU comprising a header portion and a data portion, and the method including selective addition of a Length Indicator field to the said header portion responsive to the determination of the presence in the PDU of the last bit of an ARQ SDU and if a HARQ PDU is formed of a plurality of ARQ PDUs wherein the last of the ARQ PDUs is arranged not to include an LI within its header if it is found not to be carrying the last bit of the ARQ SDU and LI will be added to all other ARQ PDUs though they are not carrying last bit of ARQ SDU.

Abstract: The present invention provides a method of PLMN selection subsequent to a change in cell for a mobile radio communications device in a multi-network cellular environment, the method including the steps of monitoring system information within a mobile radio communications device to determine the availability of a HPLMN or any other higher priority PLMN than current registered PLMN, and selecting the said HPLMN or higher priority PLMN than current registered PLMN if identified as available, and also a related network-sharing-capable UE that, when registered with a visitor PLMN, can readily check the availability of its HPLMN or any other higher priority PLMN in the system information whenever it moves to a new location area and, assuming the HPLMN or higher priority PLMN to be found, can then reselect to that PLMN.

Abstract: The present invention provides for a method of forming at least one ARQ PDU from an ARQ service data unit (SDU), the ARQ PDU comprising a header portion and a data portion, and the method including selective addition of a Length Indicator field to the said header portion responsive to the determination of the presence in the PDU of the last bit of an ARQ SDU and if a HARQ PDU is formed of a plurality of ARQ PDUs wherein the last of the ARQ PDUs is arranged not to include an LI within its header if it is found not to be carrying the last bit of the ARQ SDU and LI will be added to all other ARQ PDUs though they are not carrying last bit of ARQ SDU.