摘要:
For the purpose of selecting a base station (110, 120) to be used as a serving base station of a mobile terminal (100), a traffic characteristic of the mobile terminal (100) is determined. The traffic characteristic may in particular be indicative of an asymmetry between downlink and uplink data traffic of the mobile terminal (100). On the basis of the traffic characteristic, a selection between a first mode and a second mode is performed. In the first mode the base station (110, 120) to be used as the serving base station is selected on the basis of its downlink radio capacity as compared to one or more other base stations (110, 120). In the second mode the base station (110, 120) to be used as the serving base station is selected on the basis of its uplink radio capacity as compared to one or more other base stations (110, 120).
摘要:
Methods and arrangements for adjusting timing of transmissions in a radio communication system in which aggregation of component carriers is employed are disclosed. A base station sends a first TA command applicable to a first component carrier to a user equipment. A need to maintain different uplink transmission timing for the first user equipment component carrier and second uplink component carrier is detected by the base station. The base station then sends a second TA command based on the detected need to maintain different uplink transmission timing. The second TA command is applicable to uplink transmissions on the first component carrier and/or the second component carrier. The user equipment adjusts uplink transmissions on the first component carrier and/or the second uplink component carrier based on the second timing advance command.
摘要:
A method of operating a telecommunications system (20) comprises a radio access network node (34) offering plural parameter configurations to a wireless terminal (30) over a radio interface (32) and the wireless terminal (30) choosing a preferred parameter configuration from among the plural parameter configurations offered by the radio access network node. In an example embodiment and mode, the method further comprises the radio access network node (34) offering the plural parameter configurations as a list of discontinuous reception (DRX) configuration information elements, each discontinuous reception (DRX) configuration information element comprising one parameter value for each of the one or more corresponding discontinuous reception parameters defined for the configuration information element.
摘要:
A method and arrangement for estimating the current channel quality for a data transfer in a mobile network. In a sending system entity, a channel quality estimate (CQE) associated with a data transfer to a receiving system entity in a mobile communication network is adjusted. One or more probing packets are communicated 400 between the sending system entity and the receiving system entity, each probing packet being formatted according to a predefined combination of transmission parameters. Furthermore, is a Channel State Information (CSI) report received 404 from the receiving system entity, and the CQE is adjusted 406 based on the CSI report and which probing packets have been successfully communicated. By sending a sequence of probing packets, each formatted according to a predefined combination of transmission parameters, and not waiting for each packet to be acknowledged, a fast and accurate estimation of the current channel quality is achieved.
摘要:
A method for use in a cellular communications system in which system traffic can be exchanged between transceivers comprises receiving traffic from a second transceiver at a first transceiver. The traffic includes data units that are each associated with an identifier. The data units are also divided into segments. The method additionally includes sending status information from the first transceiver to the second transceiver. The status information pertains to one or more data units transmitted by the second transceiver. Additionally, sending the status information includes, for non-received and partially received data units, sending information indicating the data units were non-received or partially received and, for partially received data units, sending information indicating which parts of the data units were not received.
摘要:
Methods and arrangements in a base station are provided for scheduling radio resources to a user equipment. A time offset value is received that is associated with the moment of time when a frame of data was generated in the user equipment buffer. The moment of time when the frame of data was generated in the user equipment buffer is determined, based on the received time offset value. Thus, the buffer state of the user equipment buffer is predicted by using the determined moment of time when the frame of data was generated in the user equipment buffer. Radio resources are granted to the user equipment, based on the predicted buffer state of the user equipment buffer. Methods and arrangements in a user equipment for assisting the base station in scheduling radio resources are also provided herein.
摘要:
A method, node device, signal, and instruction set to reduce the size of data packets in a telecommunications network. The invention provides a solution wherein a size of SDU position identifiers in a header of a packet data unit is optimized depending on the actual size of the packet data unit, reducing the amount of data sent in the telecommunication network.
摘要:
A communication system includes a transmitting communication device (310) and a receiving communication device (320). The transmitting communication device (310) determines a control element, e.g., a control element of a Media Access Control protocol, associated with one of the carriers and provides the control element with an identifier specifying the carrier the control element is associated with. The transmitting communication device (310) sends the control element with the identifier on one of the carriers to the receiving communication device (320). The receiving communication device (320) receives the control element and determines, from the identifier received with the control element, the carrier the control element is associated with. Further, the receiving communication device (320) determines, on the basis of parameters indicated by the control element, a data transmission property of the carrier the control element is associated with.
摘要:
Method for performing a feedback process between a network access node and a user terminal, comprising collecting supporting information and suspending a transmission of a transport block until the supporting information is collected and/or a decision is taken as to whether request either a new transmission or a retransmission. The method may be performed in a serving network node cooperating with supporting network nodes, receivers or antennas, wherein a first part of the information of the transport block is gathered from a receiver or antenna within the serving network node and a second part of the information of the transport block is gathered from one of the supporting network nodes, receivers or antennas.
摘要:
According to the present invention, a receiving node of a telecommunications network (20) (e.g. a radio base station (20) in uplink, or a mobile terminal (24) in downlink) transmits a single acknowledgement message to a transmitting node (e.g. a mobile terminal (24) in uplink, or a radio base station (22) in downlink) in respect of signals received over a plurality of frequency-aggregated carriers (component carriers) (10) between the transmitting and receiving nodes. If all signals are decoded correctly in the receiving node, a positive acknowledgement message (ACK) is sent to the transmitting node; if not all signals are decoded correctly, a negative acknowledgement message (NACK) is sent, or no acknowledgement message is sent. In this way, a single acknowledgement message can be sent for signals received over multiple carriers. The acknowledgement message can have the same format as legacy standards (for example, as specified in Release 8 of the 3GPP specifications), providing compatibility with existing equipment. The number of messages is also reduced compared with the straightforward approach of transmitting individual acknowledgement messages per component carrier.