Abstract: The present invention relates to a method for scheduling data retransmissions, a method for use in a data retransmission scheme and a method for updating a soft buffer of a base station in a mobile communication system during a soft-handover. The present invention relates to a base station executing the controlling and updating method, a communication terminal for executing the scheduling method and to a mobile communication system comprising at least one the base station and communication terminal. To prevent erroneous combining of data packets in a packet retransmission scheme at the receiver, the present invention provides a method that may flush the soft buffer region associated to a received data packet upon its correct reception. Further, a method is provided that monitors the time elapsed since the last storing of a data packet in a buffer region of a base station to be able to trigger the flush of the buffer region upon expiry of a threshold time period.

Abstract: Method for informing a mobile terminal on target cell-specific system information to facilitate a mobility procedure such as handover or cell reselection in a mobile communication network. Further a radio resource control apparatus, a mobile terminal and a system comprising the radio resource control apparatus and the mobile terminal are provided. The invention suggests improvements to current mobility procedures so as to reduce the interruption time implied by the procedures. More specifically, it is proposed to include at least one pointer to target cell-specific system information to a control message, such as a handover indication or connection release message, pointing the mobile terminal to system information in the target cell relevant for system access and/or to perform mobility procedures. Further, a portion of the target cell-specific system information may also be comprised in the control message.

Abstract: A method of retransmission protocol reset synchronisation in a radio network of a communication system, said radio network including at least one radio network controller RNC for controlling a plurality of base stations in communication with mobile terminals, wherein the RNC communicates with a communication terminal using a radio link control RLC procedure and the plurality of base stations communicate with the mobile terminals using a medium access control MAC procedure, comprising the steps of initiating a RLC reset procedure upon occurrence of an unrecoverable protocol error and initiating a MAC reset procedure in response to a RLC reset procedure.

Abstract: A method of HARQ process configuration in a mobile communication system, wherein a plurality of HARQ processes are transmitted from a transmitter to a receiver comprising the step of configuring a plurality of HARQ processes of unrestricted use for data flows having different priorities and the step of pre-configuring at least one reserved HARQ process for specific data flows of high priority. According to another embodiment, instead of a reserved HARQ process, an additional HARQ process is pre-configured.

Abstract: The invention relates to an improved paging procedure for mobile nodes in a mobile communication system. A UE in idle mode is paged by a network entity via a selectable frequency subband of the system bandwidth. For every resource block, comprising part of the paging message or a diversity repetition thereof, a respective frequency subband is selected based on various parameters. These parameters may include: load in the subbands, UE capability in the tracking area and/or importance of paging information within the resource block. Furthermore, additional parity bits may be transmitted instead of the diversity repetition of the paging message, wherein the resource blocks, comprising the additional parity bits, are also transmitted via selectable frequency subbands. Thereby, the delay for changing from the idle to the active state of a mobile node may be reduced by increasing reliability of paging message transmission and resources may be utilized more efficiently.

Abstract: Method for informing a mobile terminal (MN), which is located in a first cell, on system information of a second cell. In particular, pointers to the system information are transmitted from the base station of the first cell to the mobile node, while the mobile node is located in the first cell. The MN processes said pointer, comprising e.g. information on the transmission format and timing of system information in the second cell. Using an acquisition gap assigned by the network, the MN changes the frequency to the second frequency so as to acquire the system information based on the previously received scheduling information. Thus, the acquisition time for important system information may be reduced, as no Master Information Block on the second frequency has to be processed first, in order to acquire the system information.

Abstract: A wireless communication terminal apparatus, a wireless communication base station apparatus, a wireless communication system and a telephone call connecting method wherein the message size in a telephone call connection can be reduced. A broadcast information producing part (203) assigns cell level information, which is preconfiguration information managed by the cell level, and PLMN level information, which is preconfiguration information managed by the PLMN level, to different transmission units to produce broadcast information, which is then broadcasted from a broadcast information transmitting part (204) to UEs. A preconfiguration usage deciding part (208) determines whether a UE, which sets a channel, can use a preconfiguration. If the UE can use a preconfiguration, a control information producing part (209) causes control information to include the corresponding index, and then the control information is transmitted from a control information transmitting part (210) to the UE.

Abstract: The present invention relates to a method and transmission apparatus for transmitting broadcast system information in a mobile communication system. Further, the invention relates to a method and mobile terminal receiving the broadcast system information. To provide an improved method for broadcasting broadcast system information the invention suggests mapping different partitions of broadcast system information to a shared transport channel or a broadcast transport channel for transmission. The mapping may take into account parameters inherent to the mobile terminals to which the broadcast system information is to be transmitted and/or parameters inherent to the different partitions of broadcast system information.

Abstract: The present invention relates to a method for controlling a radio cell change of a communication terminal from a first radio cell to a second radio cell, wherein the first and the second radio cell is controlled by at least one base station of a mobile communication system. The present invention further provides a base station and a communication system comprising a plurality of base stations and a communication terminal adapted to execute the control method. To overcome negative impacts of data loss and delay during a cell change procedure the protocol context of a retransmission protocols are transferred from a source base station to a target base station upon an cell change of a communication terminal in issue.

Abstract: It is possible to provide a radio communication terminal device, a radio communication base station device, and a radio communication method capable of rapidly completing a handover even during DRX/DTX. In the devices and the method, a terminal (100) transmits a quality measurement result to a base station (150) at an Active interval. Here, the terminal (100) sets the DRX/DTX interval to a short interval since performance of a handover is predicted. The base station (150) which has received the quality measurement result transmitted from the terminal (100) recognizes that the terminal has set the DRX/DTX interval to a short interval and transmits a handover instruction to the terminal (100) at the Active interval, considering the shortened DRX/DTX interval.

Abstract: The method according to the present invention provides synchronization in a heterogeneous mobile network, for the purpose of interoperability, of a wireless local area network, in which a medium is reserved for a certain service or user in radio channel reservation periods (702) of variable duration, to a radio access network, transmitting data in transmission time intervals of pre-defined duration (603). The variable duration of a radio channel reservation period (702) is defined such that it ends by a pre-defined time period (609) before the end of a transmission time interval (603). The method may be implemented in an access point (1400) of a heterogeneous network as well as in a mobile station (1500).

Abstract: The present invention relates to a method for controlling a radio cell change of a communication terminal from a first radio cell to a second radio cell, wherein the first and the second radio cell is controlled by at least one base station of a mobile communication system. The present invention further provides a base station and a communication system comprising a plurality of base stations and a communication terminal adapted to execute the control method. To overcome negative impacts of data loss and delay during a cell change procedure the protocol context of a retransmission protocols are transferred from a source base station to a target base station upon an cell change of a communication terminal in issue.

Abstract: Mobile stations, base stations, radio network controllers and communication systems perform according to the hybrid automatic repeat request (HARQ) protocol for transmitting data packets from a transmitting entity to a receiving entity via a data channel. A HARQ method sending synchronous retransmissions involves a feedback message received from the receiving entity at the transmitting entity and, in case the feedback message indicates that the data packet has not been received successfully, a retransmission data packet is transmitted to the receiving entity after a predetermined time span upon having received the feedback message. The receiving entity soft combines the retransmission data packet with the previously received data packet.

Abstract: The invention concerns a method of managing a plurality of parallel hybrid ARQ processes including at least one of a reserved and/or additional HARQ process comprising the step of scheduling the available HARQ processes for transmission in accordance with at least one resource allocation parameter. Furthermore, the invention discloses a method of a plurality of hybrid HARQ processes including at least one of a reserved and/or additional HARQ process in a mobile communication system, wherein data flows are transmitted from a transmitter to a receiver comprising the steps of scheduling a number of transmission time intervals (TTI) in advance for a plurality of HARQ processes for transmission to the receiver, the step of predicting the channel conditions for the transmitted HARQ processes over at least one of the scheduled TTI and the step of assigning HARQ processes for transmission in accordance with the predicted channel conditions.

Abstract: The invention relates to methods for establishing a radio bearer between a network element terminating radio resource control protocol and a mobile terminal. The invention provides RNC for establishing a radio bearer between the RNC and a mobile terminal, especially adapted mobile terminals and a system comprising the network element and at least one mobile terminal. In order to reduce the delays implied by the signaling in the procedure the invention proposes two mechanisms. The first mechanism aims at reducing the delay implied by setting up the radio link for the radio bearer by preconfiguring a pool of resources comprising a set of at least radio bearer configuration and making the available radio bearer configurations known to the mobile terminals. The second mechanism aims at avoiding the delay implied by the explicit assignment of a radio network temporary identifier by signaling a set of available identifiers from which the mobile terminal may choose an identifier.

Abstract: The invention relates to a HARQ method using incremental redundancy and providing synchronous retransmissions. Further, the invention relates to a receiving entity and a transmitting entity employing the HARQ method and to a mobile communication system. To optimize conventional HARQ retransmission protocols, the invention introduces a ternary feedback which allows requesting a self-decodable version of a data packet under certain conditions. Further, the ternary feedback is provided in a backward compatible manner using a combination of conventional HARQ feedback signaling and scheduling related control signaling.

Abstract: A method of exchanging signalling information for optimising a rate control scheme in a mobile network, wherein data packets are transmitted over the network from a sender to a receiver employing the rate control scheme with a sending rate which can be adapted using feedback information from the receiver, comprising the step of exchanging PDP context information between the receiver and the network, signalling PDP context information to the sender; and adapting the sending rate using the signal PDP context information. The invention further relates to a corresponding communication system as well as to a sender and a receiver for use therein.

Abstract: The present invention relates to a method for transmitting data packets from a mobile terminal to a base station using a hybrid automatic repeat request protocol and soft combining of received data. Further, the present invention provides a base station and a mo-bile terminal both configured to perform the respective method steps. Moreover, a communication system is provided which comprises at least one base station and at least one mobile terminal. In order to decrease the interference caused by retransmissions, the present invention suggests the use of separated channels for initial transmissions and their retransmissions. In order to decrease the interference caused by retransmissions, the present invention suggests the use of separated channels for initial transmissions and their retransmissions.

Abstract: The present invention relates to a method for relocating control plane functionality of a serving base station in a mobile communication system comprising a mobile terminal and a plurality of base stations. Further, the present invention relates to a base station in a mobile communication system and to the mobile communication system. To tackle potentially intolerable delay of control signaling due to frequent serving network element relocations in the network architecture the present invention suggests a partial relocation of a serving network element wherein the control plane functionality is relocated but connection to the core network via a gateway is maintained through the previous serving network element. A further aspect of the present invention suggests a total relocation, where control plane functionalities are relocated and where a new connection to the core network is established between the new serving network element and the gateway.

Abstract: The invention relates to a method for scheduling mobile terminals within a mobile communication network and to a base station performing this method. Further, the invention relates to a method for acting upon the reception of scheduling grants in a mobile communication system and to a mobile terminal performing this method. To allow the serving cell to control resource utilization for uplink transmissions of UEs in soft-handover, without thereby decreasing the system throughput of UEs in the serving cell which are not in soft-handover, the invention proposes to use control information transmitted via a shared absolute grant channel to the UEs along with an absolute grant, wherein the control information indicate whether the absolute grant is valid for mobile terminals in soft-handover only.