Abstract: The invention discloses a communication system, method and devices for controlling transmission of packets to a user equipment during cell change. The communication system is configured so that data to be transmitted to the user equipment are first transmitted, e.g. from a network controller, to a serving cell and then transmitted from a data buffer of the serving cell to the user equipment. After having performed a cell change from the serving cell to the target cell, the data are transmitted from the target cell to the user equipment. The system, method and devices are adapted to reduce the amount of data in the data buffer in response to a decision of performing a cell change from the serving cell to the target cell. The reduction of the amount of data in the data buffer can be achieved e.g. by reducing the data flow from the network controller to the serving cell, and/or by increasing the data flow from the data buffer to the user equipment.

Abstract: The present invention relates to a flow control method and apparatus for scheduling data packets in a high-speed time-shared channel, wherein a scheduling priority is dynamically increased for a predetermined time period for users in a handover state. Thereby, transmission gaps caused by empty buffers in the handover target device can be avoided. Moreover, cell capacity can be increased due to improved multi user diversity.

Abstract: A communication network has a network element adapted to transmit data to a mobile station using at least two carriers. The network element transmits a first set of channels on a first main carrier, and a second set of channels on a second dependent carrier. The first and second set of channels may include a shared downlink channel, but are otherwise different each other.

Abstract: A communications system has a network element and a mobile station. The network element is adapted to transmit data to the mobile station on a shared downlink channel on multiple carriers and the mobile station is adapted to receive the data. A transmission scheduler schedules the data transmissions from the network element to the mobile station on the shared downlink channel on the carriers.

Abstract: This invention describes a method for a new methodology for improving a high speed downlink shared channel (HS-DSCH) transport format allocation in communication systems (e.g., mobile phone networks) using, e.g., a network element such as a node B. As CQI (channel quality indicator) reports made by a user terminal) are time stamped in a sense that they correspond to a given reference period, the Node B is able to determine what time instant in the past the given CQI report corresponds to. As the Node B scheduler knows a history of HS-DSCH (high speed downlink shared channel) transmission, it is able to determine how much HS-DSCH power was transmitted during the time corresponding to the received CQI report. Based on this information, it determines the bias required to the CQI reports received at different times to improve an accuracy of the allocated HS-DSCH transport format.

Abstract: An admission control method, packet radio system and controller. The packet radio system comprises at least one HSDPA (High Speed Downlink Packet Access) capable user terminal and at least one controller configured to control admission of user terminals to given channels. The controller comprises a processing unit configured to determine a reference value on the basis of HSDPA channel information of the packet radio system, to compare the determined reference value with the value of the user bit rate of the packet radio system, to map the user terminal to an HSDPA channel when the reference value is greater than or the same as the user bit rate, and to map the user terminal to a Dedicated Control Channel, DCH, when the reference value is smaller than the user bit rate.

Abstract: The invention provides a method, system, and network entity for adaptive setting or reservation of channelization codes and/or power for downlink channel in a communication network, in particular for DSCH and HS-DSCH, using parameters (PtxDSCHallowed, SFmin) for minimum allowed Spreading Factor, SF, and/or allowed power level, the parameters being set depending on the traffic load, the total cell load and/or the availability of channelization codes.

Abstract: The present invention relates to a method for performing handover in a communication network, wherein communication with a subscriber terminal (UE) having subscribed to said network is performed by the intermediate of at least one net entity (Node B) handling the communication of said subscriber terminal, upon a change of a communication state for said subscriber terminal within said network, which fulfills a predetermined handover trigger condition, a handover procedure is performed under control of a control entity (RNC) of the communication network, a handover procedure is defined by a handover signaling scenario (HO, HHO, SHO, SSTD) and at least one set of handover parameters per signaling scenario, the handover parameters define a respective handover trigger condition, a communication with a subscriber terminal belongs to a specific one of a plurality of traffic classes, and wherein at least one user class is defined per traffic class, the method comprising the steps of configuring a set of handover para

Abstract: The invention provides a method, system and network element for providing enhanced utilization of code resource in a cellular systems, preferably a terrestrial cellular CDMA systems, wherein a base station comprises an antenna system which generates several beams A spreading factor (SF) of the root channelization code sets an upper limit on the maximum bit rate. The spreading factor of the root channelization code is selected according to the set of minimum spreading factors assumed for the different beams. Packet scheduling for parallel beams is provided in such a manner that not all beams transmit on downlink, e.g. PDSCH, with high or maximum bit rates (low Spreading Factor) simultaneously. The packet scheduling in the individual beams is coordinated so that only one of the beams is transmitting with a high bit rate during the same time period. Different scheduling slots are balanced so they require nearly the same amount of code resources.

Abstract: The present invention relates to a method and system for providing a downlink connection in a cellular network. A feedback information indicating a selected cell is transmitted to a central network element (20) controlling at least two network elements (N1-N3) serving cells (C1-C3) of the cellular network. The at least two network elements are controlled by the central network element based on the feedback information so as to establish the downlink connection. Thus, the downlink transmissions of the non-central network elements (N1-N3) are controlled by the network so as to decrease performance loss due to reception errors of the feedback information. The feedback information may be a temporary ID obtained in a site selection diversity transmission control scheme.

Abstract: A method of controlling link adaptation in a packet radio system is described, the method comprising receiving (302) a CQI (channel quality indicator) report, the CQI report including the number of parallel multi-codes, the transport block size, TBS, and the modulation scheme to be used in link adaptation; and calculating an effective code rate, ECR, based on the received CQI report. The method comprises calculating (306) new estimates for the effective code rate (ECR) and the transport block size (TBS) based on a ratio of the number of multi-codes of the CQI report and the number of multi-codes that the packet radio system has available for transmission, and executing (308) link adaptation based on the new estimates for the effective code rate (ECR) and the transport block size (TBS).