Abstract:
Embodiments of the disclosure generally relate to uplink transmission. A network device allocates resource regions for uplink transmission of a data packet of a terminal device. The resource regions are distributed across a plurality of carriers and correspond to consecutive transmission time intervals for transmitting the data packet. The network device transmits information about the resource regions to the terminal device to enable the terminal device to perform uplink transmission of the data packet based on the information.
Abstract:
A method (310) of power control for multi-user multi-input multi-output (MU-MIMO) transmissions between a pair of mobile terminals and a radio base station is provided. The method comprises determining (312) signal-to-interference-noise ratios (SINRs) for the radio channels between the mobile terminals and the radio base station, determining (312) a channel orthogonality between the radio channels, and jointly determining (315), based on the SINRs and the channel orthogonality, power adjustment values for the mobile terminals. The present invention makes use of an understanding that the system gain resulting from MU-MIMO transmissions may be improved by optimizing the transmission power of the co-scheduled mobile terminals. For instance, the power adjustment values may be determined so as to attain certain SINR targets. Alternatively, the power adjustment values may be determined so as to maximize the throughput while maintaining a power budget constraint. Further, a radio base station for MU-MIMO transmissions is provided.
Abstract:
In a method of controlling RRC (Radio Resource Control) state switching in a wireless communication system, adaptively controlling (S40) RRC state switching between an idle state and a connected state for a user equipment based on at least a detected mobility measure for said user equipment.
Abstract:
In a method of controlling RRC (Radio Resource Control) state switching in a wireless communication system, adaptively controlling (S40) RRC state switching between an idle state and a connected state for a user equipment based on at least a detected mobility measure for said user equipment.
Abstract:
Methods and arrangements for generating adjustment commands in a node. The adjustment commands adjust the transmission power of radio signals. The radio signals are sent over at least a first channel and a second channel. The adjustment is performed by adjusting a gain factor. The gain factor is associated with the relation between a first transmission power level of a first channel and a second transmission power level of a second channel.
Abstract:
A method for scheduling use of a downlink packet data traffic channel shared by a plurality of mobile and/or immobile stations, each station having a scheduling downlink transmission rate. The method comprises the steps of: determining a ranking metric for each of said mobile/immobile stations having queued data that varies directly with the mobile/immobile station's scheduling downlink transmission rate, and a delay factor indicative of the staleness of data queued for each of said mobile/immobile stations having queued data. The method also comprises the steps of: determining an uplink metric for each of said mobile/immobile stations having queued data, and scheduling one or more downlink transmissions to the mobile/immobile stations on the downlink packet data traffic channel based on said ranking metric and on said uplink metric.
Abstract:
The present invention relates to an apparatus and method for triggering change of a Radio Resource Control (RRC) state for a user equipment operating in a cellular network. According to the method a Radio Link Control (RLC) buffer threshold associated with a Radio Link Control buffer is set to an initial value upon the user equipment entering a CELL_FACH RRC state. The RLC buffer threshold is decreased as a function of time. A RRC state change for the user equipment between the CELL_FACH RRC state and a CELL_DCH RRC state is triggered according to a predetermined rule based on a current size of the RLC buffer and the RLC buffer threshold. The method facilitates achieving a desired RRC state transition behavior for some types of users.
Abstract:
Method for scheduling use of a downlink packet data traffic channel shared by a plurality of mobile and/or immobile stations (12), each station having a scheduling downlink transmission rate (R1, R2 , . . . Rn). The method comprises the steps of: determining a ranking metric (RANK) for each of said mobile/immobile stations (12) having queued data that varies directly with the mobile/immobile station's scheduling downlink transmission rate (R1, R2 , . . . Rn), and a delay factor indicative of the staleness of data queued for each of said mobile/immobile stations (12) having queued data. The method also comprises the steps of: determining an uplink metric (ULM) for each of said mobile/immobile stations (12) having queued data, and scheduling one or more downlink transmissions to the mobile/immobile stations (12) on the downlink packet data traffic channel based on said ranking metric (RANK) and on said uplink metric (ULM).
Abstract:
The disclosure relates to a method in a mobile terminal for communication with a base station in a wireless network during a random access procedure. The method comprises exchanging (202) between the mobile station and the base station, during the random access procedure, information on a selected DRX scheme to be used for communication between the mobile terminal and the base station in the random access procedure, setting (204) the mobile terminal in DRX mode according to the selected DRX scheme and receiving (206) at least one message from the base station during the random access procedure, wherein the at least one message was transmitted according to the selected DRX scheme. The disclosure also relates to a corresponding method in a base station, and to a mobile terminal and a base station. By such methods, base station and mobile terminals, battery power in a mobile terminal may be saved during a random access procedure.
Abstract:
The embodiments disclose a method and base station for relay deployment in a Time Division Duplex (TDD) communication network. The method comprises configuring a first base station to operate as a donor base station, and configuring a second base station to operate as a relay node, wherein a first sector of the second base station is configured as a User Equipment (UE) part of the relay node and a second sector of the second base station is configured as a base station part of the relay node. The method further comprises allocating wireless resources for backhaul link between the first base station and the second base station and for access link between the second base station and a UE.