Telefonaktiebolaget Lm Ericsson (publ)

Kristofer Sandlund

Jonas Pettersson

Ghyslain Pelletier

Johan Torsner

Erik A Eriksson

Min Wang

Sara Sandberg

Ylva Timner

Mats Wernersson

Rui Fan

Qianxi Lu

Andreas Bergström

Arne Simonsson

Niklas Andgart

Mårten Ericson

Hans Hannu

Sina Maleki

Per Synnergren

Magnus Thurfjell

Kristina Jersenius

Ilmiawan Shubhi

Pramod Jacob Mathecken

There is presented a method for a network node for reducing interference in a wireless device (), the wireless device operating using a time division0duplex. TDD, configuration in a cell, from at least another wireless device operating in a neighbouring cell using another TDD configuration. The TDD configuration is divided into different time units for at least downlink, DL, and uplink. UL, transmission. The method includes assigning time units in the TDD configuration to one of at least two time unit groups, where the assignment of a time unit to a time unit group is based the interference from the neighboring cell using the another TDD configuration. The method further includes using different link adaptions for the at least two time unit groups. The is also presented a network node.

Method and network node for interference mitigation for TDD UL/DL configuration

A technique of selectively transmitting a skip signal indicative of skipping a downlink control channel from an access node () to a radio device () is provided. As to a method aspect, a method () of selectively transmitting a skip signal indicative of skipping a downlink control channel comprises or initiates determining (), for the radio device (), whether a criterion for at least one of skipping the downlink control channel and transmitting the skip signal indicative of skipping the downlink control channel is fulfilled. The method () further comprises or initiates transmitting (), to the radio device (), the skip signal indicative of skipping the downlink control channel if the criterion has been determined () to be fulfilled for a predefined duration.

Technique for skip signal transmission

Method, preferably implemented in a transmission node (), for performing link adaptation of a radio link (, C), comprising: determining () an estimation error of an estimated quality of the radio link (, C), adapting () a Modulation and/or Coding Scheme, referred to as MCS, decision input value, which is based on the estimated quality of the radio link, by increasing the MCS decision input value if the determined estimation error exceeds a predetermined threshold, selecting () a MCS based on the MCS input value as adapted.

Radio link adaptation in communication systems

A UE, an RBS and respective methods therein for managing uplink resources from an RBS in a wireless communication network are provided. The method in the UE comprises determining that uplink resources are needed, and determining which type of service for which the uplink resources are needed. The method further comprises transmitting, to the RBS, a scheduling request for a scheduling grant, the scheduling request comprising an indication of the type of service for which the scheduling grant is requested.

User equipment, a radio base station and respective method therein for managing uplink resources within a coverage area of the radio base station

Method and arrangement in base station () for estimating the amount of data to be received from a terminal (). The base station () and the terminal () are comprised within a wireless communication system (). The terminal () comprises a buffer arranged to buffer frames comprising data. The method comprises determining () a service requested by the terminal (), estimating () the arrival time of data to be received from the terminal (), based on the determined service, and setting () a buffer estimate, comprising an estimation of the amount of data to be received, based on an estimated frame size for the determined service.

Method and arrangement in a wireless communication system

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.

Method and a device for saving power in a wireless user terminal

The invention relates to a method in a source radio base station () for enabling a handover of a connection to a user equipment () from a source cell () to a target cell (). The source radio base station () serves the source cell () and is comprised in a radio communications network (). The source radio base station receives () at least a first segment of a measurement report from the user equipment (), which measurement report indicates received signal power of signals of neighboring cells. The source radio base station then determines () a transmission time of the segment of the measurement report and compares () the transmission time with a predefined time threshold value. When the transmission time has exceeded the time threshold value, the source radio base station determines () whether to perform the handover based on the at least first segment of the measurement report.

Method and arrangements for reducing the number of failed handover procedures

The present invention relates to a network node such as a base station for a wireless communications system, and to a method for supporting a change of a buffer estimation state of a user equipment from a passive to a proactive state. The method comprises receiving () information describing a buffer status of the user equipment, and determining () whether to change the buffer estimation state of the user equipment to the proactive state based on the received information. The purpose is to achieve a more correct UE buffer estimation state and thus better accuracy for the buffer estimation.

Network node and method related to buffer estimation

Quality of service information (QoS) is included with a compressed header of a data packet and can be utilized by nodes supporting the header compression channel to perform QoS enforcements at a sub-flow granularity level. A basic mode of a method comprises (1) processing a packet using a process having a process-associated quality of service requirement to form a processed packet, and (2) including, with a compressed header for the processed packet, the header-included quality of service information which is derived using information indicative of the process-associated quality of service requirement. In another mode the header-included quality of service information is derived both from the process-associated quality of service requirement and quality of service information extracted from the received packet.

Inclusion of quality of service indication in header compression channel

Method and arrangement in a base station for allocating resources to a user equipment. The method and arrangement comprises analyzing a period of time comprising a subset of the predetermined scheduling request opportunities, detecting a scheduling request from the user equipment, establishing priority level information from the detected scheduling request and the subset of the predetermined scheduling request opportunities, and allocating resources to the user equipment, according to the established priority level information. In addition, a method and arrangement in a user equipment for assisting the base station in allocating resources to the user equipment are described.

Methods and arrangements in a wireless communication system

The present invention relates to a method and a base station () for load balancing in Semi-Persistent Scheduling, SPS transmission. The method can comprise to activate downlink or uplink SPS transmission for a User Equipment (, step), and to obtain information about transmission load comprising SPS transmission or HARQ ACK/NACK responses to SPS transmissions, on a Physical Shared or Control Channel (steps). Based on the obtained information it is determined for which subframe within a duration of T subframes, the transmission load comprising SPS transmission or HARQ ACK/NACK response to SPS transmissions, on a Physical Shared Channel or on a Physical Control Channel is the lowest within the duration of T subframes (steps). SPS transmission is then scheduled to be valid in the determined subframe having the lowest SPS transmission load on the Physical Shared Channel or to be valid in a subframe causing the HARQ ACK/NACK responses to the SPS transmissions to be transmitted in the subframe having the lowest of HARQ ACK/NACK responses to the SPS transmissions, within the duration of T subframes (step). This load balancing provides a number of advantages comprising less postponed scheduling, less unused subframes and less collisions on said channels.

Method and arrangement for load balancing in a telecommunications system

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.

A method of operating a base station node () comprises obtaining an indication of degradation of a radio link connection between the base station node and the user equipment unit (UE) which is carried by the a high speed packet channel (HSDPA). In accordance with the distance indication, the transmission priority for the radio link connection is modified. Preferably the indication of degradation is a distance indication of distance of a user equipment unit () involved in the radio link connection from the base station node (). The transmission priority can be modified for one or both of downlink and uplink transmissions for the user equipment unit (UE). Preferably the transmission priority is modified for the radio link connection, e.g., for the user equipment unit (UE), as a function of the indication.

Enhancing coverage for high speed downlink packet access (HSDPA) channel

Method and arrangement in a base station for computing a delay time parameter of data in a buffer of a terminal. The base station and the terminal are within a wireless communication system. The terminal buffer is arranged to comprise frames, which frames in turn are arranged to comprise data. The method comprises determining a service requested by the terminal, estimating the arrival time of the last frame comprising transmit data to be received from the terminal, estimating the number of frames comprised in the buffer of the terminal, establishing a frame interval according to the determined service and estimating the arrival time of the oldest frame in the terminal buffer by subtracting, from the estimated arrival time of the last received frame comprising transmit data, one established frame interval for each frame the terminal buffer is estimated to comprise, additional to the oldest frame.

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Luleå, Sweden

Kristofer Sandlund