Abstract: Disclosed are a catalyst component and a catalyst for olefin polymerization, and an olefin polymerization method. The catalyst component comprises magnesium, titanium, a halogen and an internal electron donor, wherein the internal electron donor comprises a monocarboxylic acid ester compound and a diether compound, and the molar ratio of the monocarboxylic acid ester compound to the diether compound is (0.0035-0.7):1. By using the catalyst, a polymer having both a high isotactic index and a high melt flow index can be prepared.

Abstract: The present invention provides for a method of controlling selection of a localised scheduling scheme or a distributed scheduling scheme within an OFDMA downlink and including the step of estimating a fading characteristic and initiating switching between the scheduling schemes responsive to the result of the said estimation, wherein the fading characteristic can comprise one of fading rate or fading type, and wherein the invention can provide for such estimating functionality within a mobile radio communications device.

Abstract: A method of controlling an uplink timing recovery within a mobile radio communications device operating within a mobile radio communications network includes determining a requirement for the uplink timing recovery in a manner responsive to a velocity of a movement of the mobile radio communications device, in which a determination of the velocity of the movement of the mobile radio communications device is achieved by a determination of a timing offset within downlink signaling.

Abstract: A mobile station establishes UL synchronization by the use of downlink preamble messages, and by monitoring timing drift within the downlink signalling and by updating the UL synchronization value responsive to the magnitude of the timing drift exceeding a threshold value. Tx power values can also be updated as a function of the updated synchronization value.

Abstract: The present invention provides for a method of controlling discontinuous reception cycles in a mobile radio communications device, and discontinuous transmission cycles in a mobile radio communication network device, and comprising the steps of monitoring the number of consecutive discontinuous reception and transmission periods within which no data is received, monitoring the number of consecutive discontinuous reception and transmission periods within which data is received, and varying the said discontinuous reception cycle responsive to the result of said monitoring.

Abstract: The invention provides for a method of controlling discontinuous reception between a mobile radio communications network device and a mobile radio communications device within a mobile radio communications network and including the step of controlling magnitude of the discontinuous reception period in a manner responsive to the velocity of movement of the mobile radio communications device within the network such that a decrease in velocity can lead to an increase in the discontinuous reception period employed by the devices.

Abstract: A method for routing communications in a communications network between a first User Equipment registered with an access point base station (2) and a second User Equipment is disclosed. The method comprises the steps of determining whether the second user equipment is within network coverage of the access point base station (2) or a further access point base station (2) and routing the communication via one or more of the access point base stations (2) in dependence upon the result of the determination.

Abstract: A mobile station establishes UL synchronisation by the use of downlink preamble messages, and by monitoring timing drift within the downlink signalling and by updating the UL synchronisation value responsive to the magnitude of the timing drift exceeding a threshold value. Tx power values can also be updated as a function of the updated synchronisation value.

Abstract: The present invention provides for a method of controlling discontinuous reception cycles in a mobile radio communications device, and discontinuous transmission cycles in a mobile radio communication network device, and comprising the steps of monitoring the number of consecutive discontinuous reception and transmission periods within which no data is received, monitoring the number of consecutive discontinuous reception and transmission periods within which data is received, and varying the said discontinuous reception cycle responsive to the result of said monitoring.

Abstract: The invention provides for a method of controlling discontinuous reception between a mobile radio communications network device and a mobile radio communications device within a mobile radio communications network and including the step of controlling magnitude of the discontinuous reception period in a manner responsive to the velocity of movement of the mobile radio communications device within the network such that a decrease in velocity can lead to an increase in the discontinuous reception period employed by the devices.

Abstract: The present invention provides for a method of controlling uplink timing recovery within a mobile radio communications device operating within a mobile radio communications network, including the step of determining a requirement for uplink timing recovery in a manner responsive to velocity of movement of the mobile radio communications device, and preferably on the basis of a timing-offset within downlink signalling.

Abstract: The present invention provides for a method of controlling selection of a localised scheduling scheme or a distributed scheduling scheme within an OFDMA downlink and including the step of estimating a fading characteristic and initiating switching between the scheduling schemes responsive to the result of the said estimation, wherein the fading characteristic can comprise one of fading rate or fading type, and wherein the invention can provide for such estimating functionality within a mobile radio communications device.