Patent application number | Description | Published |
20080253334 | Downlink Solution for Seamless and Lossless Cell Change in a Cellular System - The present invention relates to a UE, base station network node and methods thereof in a cellular mobile communication system. One method concerns handover from a first radio base station to a second radio base station wherein, it comprises the steps receiving a notification from the first radio base station that currently serves said UE, said notification indicating the last packet to be transmitted to this user equipment from said first radio base station on a first connection; and informing the second radio base station by a request to commence transmission from this second radio base station when the notified last packet is received at the UE. | 10-16-2008 |
20080267129 | Uplink Cell Changes in a Mobile Communication Network - The present invention relates to a user equipment, UE, wirelessly connectable to a cellular mobile communication network adapted to perform uplink cell change of the UE from the first radio base station to a second radio base station. The UE comprises means for controlling the HARQ retransmissions and means for determining the time point for performing the cell change based on the controlled ongoing HARQ retransmissions of outstanding data. | 10-30-2008 |
20080318607 | Combined Contention and Scheduling Based Uplink for S3g - A communications system comprises a terminal, and network resources. The terminal is operable to transmit substantially simultaneously a data portion and a data transfer request for that data portion to the network resources. | 12-25-2008 |
20090119564 | Methods and Apparatus for Processing Error Control Messages in a Wireless Communication System - Methods and apparatus for processing error control messages, such as RLC ARQ control messages, are disclosed. An exemplary method comprises signaling a medium access controller (MAC) that link resources are needed for transmitting data, receiving an indication from the MAC that link resources for transmitting the data are scheduled, and generating an error control message after receiving said indication, based on a current error control status. The error control message is then forwarded to the MAC for transmission. Because the generation of an error control message is delayed until resources for its transmission are scheduled, the queuing of stale control messages is avoided. | 05-07-2009 |
20090222524 | SIGNALLING OPTIMISATIONS USING HASH FUNCTIONS - A method for configuring a connection between first and second peer entities in a wireless telecommunications network comprises sending a hash value between the first and second peer entities, the hash value being a compact representation of information relating to a connection configuration procedure between the first and second peer entities. | 09-03-2009 |
20100008307 | METHOD AND UNIT FOR EFFICIENT REPORTING OF SCHEDULING INFORMATION IN A WIRELESS TELECOMMUNICATIONS SYSTEM - The present invention relates to a method and arrangement in a wireless communication system for efficient reporting of scheduling information processed in a unit of said system. The method comprises the steps of adaptively selecting a buffer status report format that is most efficient for the momentary buffer content for indicating the buffer fill levels of the scheduler, and encoding said buffer fill levels such as to minimize the number of bits needed to encode the information. | 01-14-2010 |
20100309892 | Method and Arrangement for Transmitting a Data Unit in a Wireless Communications System - An object of the present invention is to provide a mechanism for improving coverage in a wireless communications system. The object is achieved by a method in a sending node ( | 12-09-2010 |
20110013567 | Method and a Transceiver for Reducing Retransmissions in a Telecommunications System - The present invention relates to a method and to a transceiver ( | 01-20-2011 |
20120014328 | HARQ in Spatial Multiplexing MIMO System - A method and apparatus for signaling scheduling information in a spatial multiplexing wireless communications system, as well as corresponding methods and apparatus for processing such signaling information, are disclosed. Signaling scheduling information includes scheduling first and second transport blocks for simultaneous transmission during a first transmission interval on first and second data substreams, respectively, and assigning a single re-transmission process identifier for the first transmission interval and transmitting first scheduling information for the first transmission interval. The first scheduling information includes the re-transmission process identifier and first disambiguation data. Additionally, at least one of the first and second transport blocks is scheduled for re-transmission during a second transmission interval. Second scheduling information for the second transmission interval is also transmitted; the second scheduling information including the re-transmission process identifier and second disambiguation data. | 01-19-2012 |
20120039169 | Active Queue Management for Wireless Communication Network Uplink - According to the teachings presented herein, a base station implements active queue management (AQM) for uplink transmissions from user equipment (UE), such as a mobile terminal. The base station, e.g., an eNodeB in a Long Term Evolution (LTE) network, uses buffer status reports, for example, to estimate packet delays for packets in the UE's uplink transmit buffer. In one embodiment, a (base station) method of AQM for the uplink includes estimating at least one of a transmit buffer size and a transmit buffer queuing delay for a UE, and selectively dropping or congestion-marking packets received at the base station from the UE. The selective dropping or marking is based on the estimated transmit buffer size and/or the estimated transmit buffer queuing delay. | 02-16-2012 |
20120269074 | METHODS AND APPARATUS FOR PROCESSING ERROR CONTROL MESSAGES IN A WIRELESS COMMUNICATION SYSTEM - Methods and apparatus for processing error control messages, such as RLC ARQ control messages, are disclosed. An exemplary method comprises signaling a medium access controller (MAC) that link resources are needed for transmitting data, receiving an indication from the MAC that link resources for transmitting the data are scheduled, and generating an error control message after receiving said indication, based on a current error control status. The error control message is then forwarded to the MAC for transmission. Because the generation of an error control message is delayed until resources for its transmission are scheduled, the queuing of stale control messages is avoided. | 10-25-2012 |
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 |
20120307783 | METHOD AND UNIT FOR EFFICIENT REPORTING OF SCHEDULING INFORMATION IN A WIRELESS TELECOMMUNICATIONS SYSTEM - A method in a wireless communication system for reporting buffer information includes selecting, a format for a buffer report based on a number of radio bearer groups, k, for which data is available for transmission by a user equipment. The buffer report indicates a respective buffer fill level for one or more radio bearer groups associated with the user equipment. The method also include encoding a buffer fill level for one or more radio bearer groups in a buffer report in accordance with the selected format and transmitting the buffer report. | 12-06-2012 |
20130111288 | Method and Arrangement for Retransmission Using Harq | 05-02-2013 |
20130301620 | HARQ in Spatial Multiplexing MIMO System - A method and apparatus for signaling scheduling information in a spatial multiplexing wireless communications system, as well as corresponding methods and apparatus for processing such signaling information, are disclosed. Signaling scheduling information includes scheduling first and second transport blocks for simultaneous transmission during a first transmission interval on first and second data substreams, respectively, and assigning a single re-transmission process identifier for the first transmission interval and transmitting first scheduling information for the first transmission interval. The first scheduling information includes the re-transmission process identifier and first disambiguation data. Additionally, at least one of the first and second transport blocks is scheduled for re-transmission during a second transmission interval. Second scheduling information for the second transmission interval is also transmitted; the second scheduling information including the re-transmission process identifier and second disambiguation data. | 11-14-2013 |
20140044079 | METHODS AND ARRANGEMENTS FOR A MOBILE COMMUNICATIONS NETWORK - A procedure for synchronization of re-configuration of RRC procedures between the radio base station and the UE is achieved by associating a new configuration to be used by a UE with an additional UE identity. The UE is normally identified by a first UE identity, but is informed in a re-configuration message that the UE also has the additional UE identity. The UE is identified by the additional UE identity when the new configuration is to be activated. Hence, when the radio base station detects that the UE responds to requests, which included the additional UE identity, the radio base station can conclude that the UE has activated the new configuration. | 02-13-2014 |
20140140257 | METHOD AND A DEVICE FOR SAVING POWER IN A WIRELESS USER TERMINAL - A method for use in a cellular system with a controlling node and user terminals, UEs. In the system, UEs can assume one of at least two states, a non-listening state, i.e. a state during which a UE does not listen for data from its controlling node, and a listening state, an “on duration” state. According to the method a UE in the system is able to alternate between said two states according to a certain scheme, the scheme according to which a UE in the system alternates between said two states being dependent on whether or not data units which are transmitted between the UE and its controlling node are received entirely and correctly within an initially allocated resource for each data unit. | 05-22-2014 |
20140369314 | 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. | 12-18-2014 |