Telefonaktiebolaget Lm Ericsson (publ)

Alessandro Caverni

Jose Luis Pradas

Waikwok Kwong

Nianshan Shi

Erik G Larsson

Namir Lidian

Peter Von Wrycza

Cagatay Konuskan

Patrik Torgny Karlsson

Fredrik Ovesjö

Billy Hogan

Bo Hellander

Johan Hultell

Paulson Angelo Vijay Silveris

There is disclosed a method performed by a User Equipment, UE, for Hybrid Automatic Repeat Request, HARQ, retransmission of data in a multi-antenna wireless communication system. The method comprises, receiving Acknowledgement/Negative Acknowledgement, ACK/NACK, feedback information relating to data transmitted on two streams, and performing, upon rank reduction where only one stream is available for transmission, retransmission of data on a cancelled stream over the remaining stream. There is furthermore disclosed a UE configured for performing the method. A transmission method together with an arrangement for a UE is also disclosed.

Method and apparatus in a wireless communication system

A first one of a wireless communication device () and a base station () performs a method for applying a change to a configuration or state of a radio bearer. The radio bearer supports the transfer of data over a radio connection between the wireless communication device () and the base station () with defined data transfer characteristics. The method includes performing a handshake with a second one of the wireless communication device () and the base station () to agree on a time to synchronously apply the change at the wireless communication device () and the base station (). The method also includes, in accordance with the agreement, synchronously applying the change at that time.

Changing radio bearer configuration or state

In one aspect, a method for facilitating the transition of a wireless communication device, WCD, () from a CELL_FACH state to a CELL_DCH state is provided. In some embodiments, the method includes determining that the WCD () should transition from the CELL_FACH to the CELL_DCH cell state. The method further includes, in response to determining that the WCD should transition from the CELL_FACH to the CELL_DCH cell state, i) sending to the WCD () a first configuration message () for moving the WCD from the CELL_FACH state to the CELL_DCH state and ii) sending to the WCD a second configuration message () for forcing the WCD to obtain a common E-DCH resource or retain a previously obtained common E-DCH resource.

Systems and methods for facilitating the transition of a wireless communication device (WCD) from a CELL_FACH state to a CELL_DCH state

The proposed technology relates to the issue of supporting release of common radio resources in a radio communication network. A radio network controller sends an indication of a value of a timer for implicit release of common radio resources to a base station. The base station receives the indication of a value of a timer for implicit release of common radio resources and determines whether to release common radio resources based on the indication of a value of the timer for implicit release of common radio resources. In this way, by using the indication of a value of the timer for implicit release the base station will be able to correctly determine whether to release the common resources upon reception of a report of empty buffer status from a UE. This will eliminate misinterpretations of the empty buffer status report, and avoid unnecessary radio link failures.

Methods and apparatuses for use in a mobile communication network

A radio network controller, RNC, keeps control of how many users to configure on a first transmission time interval, TTI, and how many to configure on a second TTI. For example, a method, performed by the RNC, for configuring at least one radio bearer between a radio base station, RBS, and wireless communication devices. The method comprises receiving, from the RBS, a request to perform a TTI switch according to a TTI switch trigger received by the RBS. The received request is analyzed and a grant to perform the requested TTI switch is sent to the RBS.

TTI switching

There is disclosed a method in a User Equipment, UE, for enabling interception, decoding and/or processing of at least parts of a Media Access Control, MAC, level message. The method comprises the steps of receiving configuration information comprising information to add additional information to a MAC level message, and creating a bit string representing the additional information. The method also comprise the step of adding the created bit string to the MAC level message, to enable a recipient of said MAC level message to determine, based on the additional information represented by the bit string, whether at least part of a payload of the MAC level message is to be intercepted, decoded and/or processed. There is further disclosed a method in a base station for decoding a corresponding MAC level message. A corresponding User Equipment, UE, and a base station configured for the methods are also disclosed.

Method for enabling interception, decoding and/or processing of a MAC level message

The proposed technology relates to the issue of supporting release of common radio resources in a radio communication network. A radio network controller () sends an indication of a value of a timer for implicit release of common radio resources to a base station (). The base station () receives the indication of a value of a timer for implicit release of common radio resources and determines whether to release common radio resources based on the indication of a value of the timer for implicit release of common radio resources. In this way, by using the indication of a value of the timer for implicit release the base station () will be able to correctly determine whether to release the common resources upon reception of a report of empty buffer status from a UE. This will eliminate misinterpretations of the empty buffer status report, and avoid unnecessary radio link failures.

A radio network controller, RNC, keeps control of how many users to configure on a first transmission time interval, TTI, and how many to configure on a second TTI. For example, a method is performed by the RNC, for configuring at least one radio bearer between a radio base station, RBS, and wireless communication devices. The method comprises sending, from the RNC to the RBS, radio bearer configuration information for controlling a distribution between a first number of wireless communication devices and a second number of wireless communication devices where the first number of wireless communication devices are operating a radio bearer using a first TTI, and the second number of wireless communication devices are operating a radio bearer using a second TTI.

A radio network controllerand a method therein for selecting two or more cellsfor simultaneous transmission of data to a user equipmentby at least one radio network nodecontrolling the two or more cells. The user equipmentis capable of Multi Point High Speed Downlink Packet Access, MP-HSDPA, transmissions. When a second cellthat is an active non High Speed Downlink Shared Channel (HS-DSCH) cell, has a better signal quality than a first cellthat is an active HS-DSCH cell, the radio network controllerselects the second cellto become an active HS-DSCH cell and to be one of the two or more cellsfor simultaneous transmission of data to the user equipment

Radio network controller, a user equipment, a radio network node and methods therein

Techniques for supporting concurrent deployment of 2-millisecond and 10-millisecond TTI for E-DCH transmissions in CELL_FACH state and Idle Mode are disclosed. One example method comprises receiving a () transport block from a mobile terminal, wherein said transport block is transmitted using either a 10-millisecond or 2-millisecond TTI, and sending (), to an RNC, an indication of whether data carried by the transport block was transmitted using the 10-millisecond TTI or the 2-millisecond TTI. In some embodiments, the indication is sent in a user plane frame sent over a base-station-to-RNC interface. A spare bit in an uplink data frame sent to the RNC may be used, for example.

Growing community of inventors

Stockholm, Sweden

Alessandro Caverni