摘要:
The present invention relates to a method and apparatus for processing reverse transmission resources of a user terminal in a mobile communication system. When receiving a plurality of grants, the method and apparatus sum resources allocated by the grants, distribute the summed resources to logical channels, map the resources distributed by the logical channels and the logical channels to MAC PDUs according to the data sizes of the MAC PDUs, and allocate the resources distributed by the mapped logical channels.
摘要:
The present invention relates to a method for cell selection in a wireless communication system. The method for cell selection by a terminal according to one embodiment of the present invention may comprise the following steps: measuring the channel quality of a first cell; measuring the channel quality of a second cell; determining whether the value obtained by applying an offset to the result of the measurement of the channel quality of the second cell is better than the result of the measurement of the channel quality of the first cell; if the value obtained by applying an offset to the result of the measurement of the channel quality of the second cell is better than the result of the measurement of the channel quality of the first cell, determining whether the value obtained by applying no offset to the result of the measurement of the channel quality of the second cell is better than a preset reference value; and, if the value obtained by applying no offset to the result of the measurement of the channel quality of the second cell is better than the preset reference value, selecting the second cell. According to one embodiment of the present invention, an operable cell can be selected to prevent malfunctions, and interference from a CSG cell may be reduced.
摘要:
A transmission control method for HARQ is provided for improving HARQ performance in a mobile communication system. The transmission control method for Hybrid Automatic Repeat reQuest (HARQ) in a mobile communication system according to the present invention includes receiving an downlink resource assignment message; determining whether configured downlink assignment has been indicated to an HARQ entity since a previously received downlink assignment for a User Equipment's (UE's) Cell-Radio Network Temporary Identifier (C-RNTI) for the same HARQ process; maintaining, if the configured downlink assignment has not been indicated to the HARQ entity, the HARQ process; and processing, if the configured downlink assignment has been indicated to the HARQ entity, the downlink resource assignment message as a resource assignment message for initial transmission.
摘要:
An improved method and an apparatus for reporting Power Headroom (PH) of a UE are provided. The Power Headroom Report (PHR) method of the present invention includes determining whether to trigger PHR based on a change of Power Management Maximum Power Reduction (P-MPR) between two time points, generating, if PHR is determined to be triggered, Power Headroom, and reporting the Power Headroom information to a base station.
摘要:
The present invention relates to a method and apparatus for efficiently configuring information during a process in which a terminal records channel measurement information in a mobile communication system. Disclosed is an operation of a terminal for accurately indicating to a base station whether or not a serving cell or neighbor cells are measured in configuring channel measurement information. In addition, disclosed is a method in which a terminal adjusts the frequency of recording in consideration of the importance of the measured information.
摘要:
A method and an apparatus for scheduling uplink transmissions according to a maximum transmission power and Power Headrooms (PHs) reported by a User Equipment (UE) are provided. A method for reporting the PHs for carriers used by a terminal in a mobile communication system supporting carrier aggregation includes generating a message including the PHs along with indicators indicating whether a real transmission is scheduled on an uplink data channel of corresponding carrier, and including, when the real transmission is scheduled, a maximum transmission power used for calculating the PHs in the generated message.
摘要:
The present invention relates to a packet retransmission method of a terminal accessing a base station in contention-based access mode, and the method includes transmitting an uplink packet to the base station; receiving, when the base station fails decoding the uplink packet, a retransmission request message transmitted by the base station; and initiating, when the retransmission request message is received, a Radio Link Control (RLC) retransmission. According to the present invention, the terminal operating in contention-based access mode initiates RLC retransmission in reception of an HARQ NACK from the base station. Accordingly, it is possible to perform the RLC retransmission immediately without necessity of waiting for the expiry of HARQ RTT as in the HARQ retransmission, resulting in reduction of packet retransmission delay.
摘要:
The present invention relates to a method and apparatus for measuring a signal. According to one embodiment of the present invention, a signal measuring method may comprise the steps of: determining whether or not a current subframe corresponds to a measurement period; measuring a serving cell signal when the current subframe corresponds to the measurement period; determining whether a current measurement mode is a normal scan mode or a short scan mode in which a serving cell signal is more frequently measured than in the normal scan mode; determining whether or not the measured serving cell signal is less than a preset low signal threshold value when the current measurement mode is the normal scan mode; and changing the current measurement mode to the short scan mode when the measured serving cell signal is less than the low signal threshold value. According to one embodiment of the present invention, a system signal measuring method and apparatus which can quickly reflect the surrounding environment while efficiently using power is provided.
摘要:
A User Equipment (UE) category handling method and an apparatus for handling late version UE category attached to an early release version network in a Long Term Evolution (LTE) system are provided. A communication method includes transmitting a terminal capability report message including multiple terminal categories, receiving a Radio Resource Control (RRC) connection reconfiguration message including a terminal category to be used by the terminal according to serving base station of the terminal, and communicating with the network using the terminal category received from the network. The UE category handling method and apparatus of the present invention allows the UE to report a network-adaptive UE category, thereby avoiding soft buffer problem caused by version information mismatch and facilitating communication with the network without malfunctioning.
摘要:
A Power Headroom Report (PHR) method and apparatus for a mobile communication system supporting carrier aggregation are provided. The method for transmitting PHR of a terminal in a mobile communication system includes configuring, when a PHR is triggered for at least one activated serving cell, an extended PHR for the at least one activated serving cell, the PHR being triggered when a change of a downlink path loss in the at least one activated serving cell is greater than a predetermined threshold value, and transmitting the extended PHR.