Patent application number | Description | Published |
20090067335 | CONGESTION CONTROL IN A TRANSMISSION NODE - Packets are selectively marked or dropped when congestion of the radio resources is experienced, the selective marking/dropping being related to or dependent on the probability that a packet will be marked with the relative efficiency of usage of the radio link by the receiver, e.g., dependent upon radio resource usage costs and fairness. For example, packets are marked or dropped based on a user's associated share of the total (or a subset of the) shared radio resources. This share may be expressed in terms of the costs of the resources in terms the user's level of utilization of the shared resources, or in terms of it's fairness with respect to other users sharing the same resources. Thus, the present technology takes into account the distribution of resources usage between receivers contributing to the congested state of the radio network. | 03-12-2009 |
20090103450 | VOIP PERFORMANCE OPTIMIZATION FOR E-DCH POWER LIMITATION - User equipment in a wireless communication system monitors scheduling information and locally detects a change in link data rate of the uplink channel based on the monitored scheduling information. In this way, a change in link data rate can be detected directly without significant delay. This direct or early detection of a rate change is then combined with an appropriate system reaction. The information of the detected change in link data rate is preferably utilized for adapting the application data rate of an IP application running in the user equipment. As an alternative, or as a complement, data packets are classified based on relative importance and selected for transfer of information over the uplink channel based on the classification of data packets and in dependence on the detected change in link data rate. | 04-23-2009 |
20090239566 | Method and a Base Station for Detecting Loss of Synchronization - The present invention relates to a method for detecting loss in DRX synchronization in a telecommunications system. The present invention further relates to a base station configured to perform the method for detecting the loss in DRX synchronization. The method comprises the steps of assigning radio resources to a UE for enabling the UE to send uplink information to the base station. The method further comprises the step of detecting loss in DRX synchronization when information that is expected by the base station is absent on the assigned resource(s). | 09-24-2009 |
20100027497 | Method and Apparatus for Relocating a Header Compression Context in a Wireless Communication System - The present invention relates to a method and an apparatus for relocating a header compression text, wherein the context updating properties of each individual header during the relocation process is disabled. | 02-04-2010 |
20100067489 | Selective Packet Forwarding for LTE Mobility - Methods and devices are disclosed for forwarding data packets during handover in a packet-switched wireless communications system, such as a 3GPP Long-Term Evolution/System Architecture Evolution system. In an exemplary method, a source base station node ( | 03-18-2010 |
20100091693 | Method and a Device for Saving Power in a Wireless User Terminal | 04-15-2010 |
20100098011 | Method and Mobile Terminal Providing Priority-Based Uplink Scheduling Infomation - A method and mobile terminal for providing uplink scheduling information to a scheduler in a wireless telecommunication system. When a logical channel having data available to transmit triggers a buffer status report, the mobile terminal determines whether a priority level associated with the logical channel exceeds a predefined threshold. If so, the mobile terminal performs a scheduling request procedure with the scheduler. If not, the mobile terminal delays the scheduling request procedure until a predefined timing event has occurred. The predefined timing event may be at least one of expiration of a timer, a radio bearer associated with the logical channel becoming active, and if the scheduling request procedure is being performed using a contention-based random access, contention resolution succeeding for the mobile terminal. | 04-22-2010 |
20100135249 | Method and Apparatus for Seamless Handover in a Wireless Communication Network - In a wireless communication network where base stations receive protocol data units (PDUs) from mobile stations for decompression and deciphering for ordered, sequential transfer as service data units (SDUs) to an associated core network, the teachings presented herein provide a method of supporting seamless handover of a mobile station from a source base station to a target base station. By way of example, the teachings herein apply to a network based on the E-UTRA specifications, as promulgated by the 3GPP. However, that example is non-limiting, as the teachings herein apply to any network that employs in-sequence data delivery and duplicate data detection at handover. Broadly, the source base station forwards out-of-sequence SDUs and corresponding sequence number information to the target base station in support of seamless handover, and the target base station uses that information to request retransmissions as needed for packet reordering. | 06-03-2010 |
20100189022 | Method and Device for Saving Power in a Wireless User Terminal | 07-29-2010 |
20100195521 | Adaptive Rate Control in a Communications System - The invention relates to a method for controlling a bit-rate of a session in a packet-switched communications system where multiple sessions are set-up via a shared resource. A current bit-rate of the session is compared to a bit-rate range valid for the session to determine a distance from the position of the current bit-rate to one of the end-points of the bit-rate range. The current bit-rate is then adapted differently depending on the distance to the selected end-point. By controlling the bit-rate of each session that is set-up via the shared resource for applications that provide delay-sensitive services to users in this way the method and corresponding system and sender-receiver arrangements have the effect that rate adaptations can be distributed among the applications so that users share responsibility for rate adaptations. | 08-05-2010 |
20100263040 | Method and Arrangement for Security Activation Detection in a Telecommunication System - A method and apparatus is provided for detecting the start of a secure mode by a user terminal ( | 10-14-2010 |
20100284314 | Compressed Buffer Status Reports in LTE - Methods and apparatus for producing a compressed buffer status report ( | 11-11-2010 |
20100284354 | Method and Apparatus in a Wireless Communications System - A method in a user equipment for requesting that a base station schedule the user equipment for an uplink data transmission to the base station is provided. The user equipment comprises a buffer. Directly or indirectly responsive to receiving data into the buffer to be transmitted to the base station, the user equipment generates a scheduling request trigger. The scheduling request trigger is configured to trigger the sending of a scheduling request to the base station if the trigger is pending at the next scheduling request opportunity, and to remain pending until it is cancelled. The user equipment cancels the pending scheduling request trigger when the data is accounted for in a buffer status report, which reports the size of the buffer to the base station, or when the data is included directly in a scheduled uplink data transmission whichever occurs first. | 11-11-2010 |
20100285809 | METHODS AND APPARATUS FOR RESOURCE MANAGEMENT IN A MULTI-CARRIER TELECOMMUNICATIONS SYSTEM - The embodiments of the present invention relate to apparatuses and methods for resource management in a multi-carrier system wherein a plurality of component carriers (CCs) is defined per cell. According to a method in an apparatus corresponding to a radio base station, a message is assembled comprising information on the structure of the cell served by the radio base station; the information including one or more CCs used in the cell that is/are available for a user equipment for performing initial access in the cell. The method also comprises, transmitting the assembled message to the user equipment and indicating to the user equipment to what resources to use for random access in the cell. The exemplary embodiments of the present invention also relates to a method in the user equipment, to a radio base station and to a user equipment. | 11-11-2010 |
20100322098 | METHOD AND ARRANGEMENT IN A TELECOMMUNICATION SYSTEM - A method for sending buffer status information includes checking if a quality of service (QoS) parameter is defined for a first logical channel and at least one condition of a set of predetermined conditions associated with a logical channel group is fulfilled. If the QoS parameter is defined and at least one condition of the set is fulfilled, the method includes setting a number of bits in a media access control header according to a first semantic. The bits carry buffer status information, and the first semantic is based on the QoS parameter of the first logical channel. Otherwise, the method includes setting the number of bits carrying the buffer status information according to a second semantic that is based on an amount of data available for transmission across the logical channel group. | 12-23-2010 |
20100323707 | Hierarchical Broadcast Service with Blind Retransmission - In a broadcast service area having regions with varying inter site distances between transmitter sites, the robustness of the transmitted signal is set to meet minimum quality of service (QoS) requirements in the region having small ISD, and additional resources are allocated to the region having large ISD to provide greater robustness. The additional resources in the large ISD area may be used for blind retransmissions of either the original data or new data. | 12-23-2010 |
20100329135 | Buffer Status Reporting Based on Radio Bearer Configuration - The present invention relates to wireless communication systems, and more particularly to a method and an apparatus for periodically reporting the buffer status in a wireless communication system. Methods and arrangements for an improved buffer status reporting taking the type of radio bearer configuration into account is provided. This is achieved according to an embodiment of the present invention by taking the type of radio bearer configuration into account when determining the content of the buffer status report sent by the UE to the eNodeB. | 12-30-2010 |
20110026625 | Discontinuous Reception (DRX) Timer Triggered with the Transmission of a Buffer Status Report (BSR) - A method implemented at a user equipment (UE) may include receiving a grant from a base station permitting the user equipment to transmit data to the base station and transmitting data to the base station, where the data includes a buffer status report (BSR) that indicates an amount of data in a buffer of the UE. The method may further include starting or restarting a discontinuous reception (DRX) timer when the data including the BSR is transmitted to the base station. The method may additionally include monitoring ( | 02-03-2011 |
20110080859 | METHODS AND ARRANGEMENTS FOR IMPROVING MBMS IN A MOBILE COMMUNICATION SYSTEM - A method in a network node for providing Multimedia Broadcast/Multicast Service from the network node to a user equipment (UE) in a mobile communication system, includes determining a scheduling information for at least one Multimedia Broadcast/Multicast Service (MBMS) service such that the scheduling information comprises information about transmission of data of the at least one MBMS service for a scheduling period that is later than a current scheduling period. The method also includes transmitting data of the at least one MBMS service and the scheduling information for said at least one MBMS service, the transmission taking place in the current scheduling period and in a plurality of consecutive scheduling periods following the current scheduling period. | 04-07-2011 |
20110092201 | Method and Arrangement in a Telecommunication System - The present invention comprises a method and an arrangement for priority handling between a measurement gap procedure and an uplink data transmission procedure in an evolved UTRAN. The user equipment (UE) detects an active measurement gap. When the UE receives data into the transmission buffer the received data triggers an uplink data transmission procedure such as a scheduling request procedure or a random access procedure. An evaluation on characteristics information associated with the received data is performed and based on the performed evaluation the UE proceeds with the uplink data transmission procedure or the measurement gap procedure. In case the characteristics information associated with the received data is of high priority, the UE proceeds with the uplink data transmission procedure and cancels the measurement gap procedure. However, if the characteristics information associated with the received data is of low priority, it proceeds with the measurement gap procedure and postpones the uplink data transmission procedure to a later occasion. | 04-21-2011 |
20110188422 | METHOD AND ARRANGEMENT IN A TELECOMMUNICATIONS SYSTEM - The present invention relates to a method and apparatus for requesting scheduling of resources to be used for uplink communication of data in a communications system. If the repeated transmission by a user equipment of scheduling requests on an uplink control channel is determined to be unsuccessful, a random access transmission on a random access channel is initiated as a fallback procedure. | 08-04-2011 |
20110205928 | Method for Improving Battery Life and HARQ Retransmissions in Wireless Communications Systems - Methods and apparatus for controlling discontinuous receiver operation in a wireless communication device are disclosed. In an exemplary embodiment, a wireless communication device ( | 08-25-2011 |
20120014306 | Methods and Arrangements in a Telecommunication System - The present invention relates to methods and arrangements in a multi-carrier system. It also assumes independent DRX (Discontinuous reception) functionality on respective component carriers and the possibility for one carrier, e.g. the anchor carrier to initiate a change of DRX state for another component carrier. The basic concept of the present invention is to introduce a new “dormant” state in the DRX logic, whereby the dormant state can be used for non-anchor carrier components. The dormant DRX state implies that a carrier of a UE having this state is not required to monitor system signaling. In embodiments of the present invention this new state is introduced for a particular component carrier (e.g. non-anchor component carrier) for a UE operating in a multi-carrier system, and how to perform the transitions to and from the dormant DRX state implicitly, e.g. based on configured timer(s) for the component carrier or explicit signaling in a different (e.g. anchor) component carriers. | 01-19-2012 |
20120046064 | Method and Arrangement in a Wireless Telecommunications System - A method in a base station for deriving a power headroom for a first component carrier is provided. The base station is a radio base station and is comprised in a wireless communication system. The base station is configured to use carrier aggregation comprising a first component carrier and a second component carrier. The base station receives ( | 02-23-2012 |
20120182916 | Method and a Device for Saving Power in a Wireless User Terminal - A method for use in a cellular system with at least one controlling node, eNodeB, which controls user terminals, UEs, in a cell. According to the method, a UE can be in one of at least two different states, an idle state, a DRX state, and an “on duration” state. A UE can receive at least a first and a second type of traffic from its eNodeB. If the first type of traffic is received by a UE during an on duration period, the UE assumes the idle (DRX) state at the end of the on duration period, and if the second type of traffic is received by the UE during an on duration period, the UE prolongs the current on duration period by a certain amount of time. | 07-19-2012 |
20120300748 | Method and Apparatus for Seamless Handover in a Wireless Communication Network - In a wireless communication network where base stations receive protocol data units (PDUs) from mobile stations for decompression and deciphering for ordered, sequential transfer as service data units (SDUs) to an associated core network, the teachings presented herein provide a method of supporting seamless handover of a mobile station from a source base station to a target base station. By way of example, the teachings herein apply to a network based on the E-UTRA specifications, as promulgated by the 3GPP. However, that example is non-limiting, as the teachings herein apply to any network that employs in-sequence data delivery and duplicate data detection at handover. Broadly, the source base station forwards out-of-sequence SDUs and corresponding sequence number information to the target base station in support of seamless handover, and the target base station uses that information to request retransmissions as needed for packet reordering. | 11-29-2012 |
20150016320 | DYNAMIC ROBUST HEADER COMPRESSION | 01-15-2015 |