Patent application number | Description | Published |
20080198795 | METHOD AND APPARATUS FOR PROCESSING UPLINK DATA BY DRX-MODE TERMINAL IN MOBILE TELECOMMUNICATION SYSTEM - Disclosed is a method and apparatus for transmitting uplink data by a terminal performing a DRX operation in a mobile telecommunication system. According to the method and apparatus, when a UE transmits the uplink data, the UE variably controls given active and sleep periods in consideration of whether or not retransmission for the uplink data is performed, thereby more flexibly operating in the DRX mode. | 08-21-2008 |
20080200171 | WIRELESS COMMUNICATION SYSTEM TRANSMITTING NEIGHBORING CELL INFORMATION - A wireless communication system in which neighbouring cell information is transmitted by the network to a mobile station is disclosed, wherein the neighbouring cell information includes sets of parameters, each set of parameters being applicable to several neighbouring cells. The neighbouring cell information may also include applicability information which specifies the rules the mobile station is to apply to determine which parameter set is applicable for a particular neighbouring cell. | 08-21-2008 |
20080212566 | Method and apparatus for transmitting and receiving VOIP packet with UDP checksum in wireless communication system - A method and apparatus for transmitting a voice packet through a radio link in a mobile communication system providing a voice service through a packet network inter-working with the Internet are provided, in which a voice packet based on an Internet protocol (e.g. a VoIP packet) is received, the voice packet comprising headers including a User Datagram Protocol (UDP) checksum; the voice packet is verified by using the UDP checksum, to determine if the voice packet has an error; the headers are compressed to construct a header-compressed packet including the UDP checksum and a Cyclic Redundancy Check (CRC) code calculated for other header fields, except for the UDP checksum from among the headers, when the voice packet has no error, the UDP checksum from the header-compressed packet is deleted to construct a header-compressed packet from which the UDP checksum has been deleted, and the header-compressed packet is transmitted without the UDP checksum through a wireless channel. | 09-04-2008 |
20080227447 | APPARATUS AND METHOD FOR PERFORMING CELL SELECTION TO HOME CELL OR PRIVATE NETWORK IN A MOBILE COMMUNICATION SYSTEM - An apparatus and method for performing cell selection to a Home cell or a Private network in a mobile communication system are provided, in which a User Equipment (UE) determines a candidate cell by measuring a serving cell and neighbor cells, receives an indicator indicating a Home cell or a Private network in system information from the candidate cell, determines whether the candidate cell is included in a Home cell or Private network list set in the UE, and selects the candidate cell if the candidate cell is included in the Home cell or Private network list. | 09-18-2008 |
20080232323 | METHOD AND APPARATUS FOR HANDOVER IN A WIRELESS COMMUNICATION SYSTEM, AND SYSTEM THEREOF - A method and apparatus for handover in a wireless communication system and a system thereof, in which a Base Station (BS) allocates Scheduling Request/Channel Quality Information (SR/CQI) transmission resources to a Mobile Station (MS), an SR/CQI being periodically transmitted from the MS to a target cell, determines whether control information has been received from the MS using the allocated SR/CQI transmission resources, and allocates radio resources to the MS, for transmission of a handover confirm message from the MS, upon receipt of the control information from the MS. | 09-25-2008 |
20080273492 | METHOD AND USER EQUIPMENT APPARATUS FOR RADIO RESOURCE MANAGEMENT IN A MOBILE COMMUNICATION SYSTEM - A method and a UE apparatus for radio resource management in a mobile communication system. When a discontinuous reception period or an inactivity period of a UE exceeds a threshold, an ENB releases resources for uplink control information transmission allocated to the UE, and the UE recognizes the release of the resources and stops transmitting the uplink control information through the resources. This reduces the explicit reconfiguration procedure through an RRC message, which is otherwise necessary whenever the UE enters a new discontinuous reception mode. | 11-06-2008 |
20080279171 | METHOD AND APPARATUS FOR LAYER 2 ARQ FOR PACKETS - An Automatic Repeat reQuest (ARQ) method in a communication system having a protocol layer structure, in which a Layer 2 (L2) transmitter for generating an upper layer packet in a size suitable for transmission over a radio channel and transmitting the upper layer packet to a lower layer, transmits, to a receiver, polling information representative of an indicator for ordering the generation of a status report, and performs packet ARQ according to whether the status report is received within a predetermined time. The method includes determining whether there is a possibility that upper layer data contained in a packet data unit to be transmitted along with the polling information will cause an upper layer message in the opposite direction; and when there is a possibility that the upper layer data will cause an upper layer message, generating polling information ordering a receiver to wait for a predetermined time after receipt of a packet and to transmit an upper layer packet generated for the waiting time along with a status report, including the polling information in the packet data unit, and delivering the packet data unit to the lower layer. | 11-13-2008 |
20090005031 | METHOD FOR MEASURING HOME CELL IN MOBILE COMMUNICATION SYSTEM - Disclosed is method for measuring a home cell in a mobile telecommunications system comprising: a network including a plurality of base stations for defining communications cells; and first and second user equipment for communicating with the network, said plurality of base stations including at least one home base station defining a home cell associated with said first user equipment and not with said second user equipment, said home cell overlapping in coverage with a communications cell usable by both said first and second user equipment, the method including the steps of: acquiring, at the network, position data indicative of the position of the first user equipment; determining whether the first user equipment is close to the home cell by using the acquired position data; sending a cell measurement control message from the network to the first user equipment via a base station specifying measurements of said home cell; performing, at the first user equipment a fine position measurement; determining at the first user equipment whether the first user equipment is close to the home cell, based on said fine position measurement; and taking measurements of said home cell at the first user equipment when the first user equipment is close to the home cell. | 01-01-2009 |
20090052388 | METHOD AND APPARATUS FOR PERFORMING RANDOM ACCESS PROCEDURE IN A MOBILE COMMUNICATION SYSTEM - A method for performing a random access procedure by a User Equipment (UE) in a mobile communication system includes transmitting a preamble for identifying the UE, through a first message; receiving a second message from an Evolved Node B (ENB) in response to the first message, the second message including uplink (UL) transmission resource information for transmitting at least one of a transparent Radio Resource Control (RRC) message which is an RRC message that a UE having no RRC control connection transmits for the first time, and Buffer Status Report (BSR) information indicating an amount of UL data; setting a format indicator indicating if the transparent RRC message or the BSR information is included in a third message; and generating the third message according to the set format indicator, and transmitting the generated third message according to the UL transmission resource information. | 02-26-2009 |
20090059853 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING PACKETS IN A MOBILE COMMUNICATION SYSTEM - A method for transmitting a packet over a radio channel in a mobile communication system. The method includes receiving first packets from an upper layer; checking a number of and a size of the first packets to be bundled in a second packet; generating the second packet using the first packets and a header including an indicator that indicates if the number of and a size of the first packets to be bundled in the second packet satisfy a predetermined condition; and transmitting the generated second packet via a lower layer. | 03-05-2009 |
20090092202 | METHOD AND APPARATUS FOR ADJUSTING UPLINK DATA RATE IN A MOBILE COMMUNICATION SYSTEM - A method and UE apparatus are provided for adjusting an uplink data rate by a User Equipment (UE) in a mobile communication system. The method includes determining if a current state of a buffer is an empty state or a non-empty state; when the current buffer state is the non-empty state, comparing a ratio of a total of transmission data currently stored in the buffer to a total of Transport Formats (TFs) allocated during a predetermined number n of subframes with a predetermined threshold; setting indication information indicating satisfaction/non-satisfaction (‘happy bit(s)’) of an uplink data rate according to the comparison result; and transmitting the set indication information to a Node B. The UE apparatus comprises a multiplexing/demultiplexing device, a HARQ processor, a controller to set information indicating satisfaction/non-satisfaction in accordance with pre-set rules, an exemplary set of which is also provided. | 04-09-2009 |
20090129326 | APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING CONTROL INFORMATION FOR UPLINK DATA IN A MOBILE COMMUNICATION SYSTEM AND SYSTEM THEREOF - A method for transmitting control information for uplink data in a mobile communication system is provided. The method includes defining a plurality of transmission data having different priorities, and determining whether there is a need for transmission of particular transmission data, for which a minimum data rate should be guaranteed, among the plurality of transmission data, and when there is a need for transmission of the particular transmission data, transmitting control information indicating a highest priority among priorities of the plurality of transmission data, along with the particular transmission data. | 05-21-2009 |
20100061290 | METHOD FOR TRANSMITTING MESSAGES RELATED TO A BROADCAST OR MULTICAST SERVICE IN A CELLULAR COMMUNICATIONS SYSTEM - A method of providing a point-to-point multicast service for transmitting data from a network element to a plurality of terminals in a communication system. The method includes transmitting a first message including service available information from the network element to the plurality of terminals, and transmitting a second message including radio bearer information from the network element to the plurality of terminals. The first message includes a pointer to the radio bearer information. | 03-11-2010 |
20100197300 | USER EQUIPMENT AND METHOD OF ITS OPERATION - A User Equipment (UE) apparatus for use in a cellular wireless communications network, and method for its operation, are provided. The apparatus includes a measuring unit for measuring signals received from at least one of a serving cell of the network and from neighboring cells, a memory for storing information defining a plurality of conditions for triggering the UE to send a measurement report to the network, the measurement report comprising a result of at least one measurement performed by the UE, a determining unit for determining when one of the plurality of conditions is met, and a sending unit for sending, in response to one of the plurality of conditions being met, a measurement report for reception by the network, wherein each of the plurality of conditions is defined by a respective plurality of at least one of parameters and variables. | 08-05-2010 |
20100278131 | APPARATUS AND METHOD FOR MANAGING A RANDOM ACCESS CHANNEL IN A MOBILE COMMUNICATION SYSTEM - An apparatus and method for managing a Random Access CHannel (RACH) in a mobile communication system, in which a User Equipment (UE) receives a UE information transmit request for a RACH procedure from a network, and transmits, to the network, a message including information indicating a contention detected in the RACH procedure. | 11-04-2010 |
20110188433 | METHOD OF MANAGING RADIO RESOURCES AND NODE B APPARATUS IMPLEMENTING THE SAME - A method of managing radio resources and a Node B implementing the same are provided. If the total radio resources used in a cell exceed target radio resources signaled by an RNC, uplink rates are equally allocated to primary UEs and non-primary UEs by controlling the signal strengths of the primary and non-primary UEs. | 08-04-2011 |
20110222401 | Method and Apparatus for Selecting Frequency Layer for Connected Mode UE in an MBMS Mobile Communication System - A method and apparatus for selecting the PL of an interested MBMS service for a UE in an MBMS mobile communication system are provided. A connected mode UE receives FLC applicability information for an interested MBMS service and keeps a current frequency or reselects to the PL of the MBMS service according to the FLC applicability information. Even if the FLC applicability information restricts FLC from the connected mode UE, the connected mode UE can reselect to the PL of the MBMS service according to its priority level. | 09-15-2011 |
20110310781 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING UPLINK DATA IN MOBILE COMMUNICATION SYSTEM - A method for transmitting uplink data using multiple carriers by a User Equipment (UE) in a mobile communication system is provided. The method includes determining a first maximum transmission power indicating a maximum transmission power for each carrier and a second maximum transmission power indicating a maximum transmission power for all carriers based on information for setting transmission power, received from an evolved Node B (eNB), determining a minimum value from among a required transmission power and the first maximum transmission power as an uplink transmission power, for each carrier, scaling the determined uplink transmission powers so that a sum of the uplink transmission powers is less than or equal to the second maximum transmission power, and transmitting the uplink data based on the scaled uplink transmission powers. | 12-22-2011 |
20120028639 | APPARATUS AND METHOD FOR PERFORMING CELL SELECTION TO HOME CELL OR PRIVATE NETWORK IN A MOBILE COMMUNICATION SYSTEM - An apparatus and method for performing cell selection to a Home cell or a Private network in a mobile communication system are provided, in which a User Equipment (UE) determines a candidate cell by measuring a serving cell and neighbor cells, receives an indicator indicating a Home cell or a Private network in system information from the candidate cell, determines whether the candidate cell is included in a Home cell or Private network list set in the UE, and selects the candidate cell if the candidate cell is included in the Home cell or Private network list. | 02-02-2012 |
20120033597 | METHOD AND APPARATUS FOR PROCESSING UPLINK DATA BY DRX-MODE TERMINAL IN MOBILE TELECOMMUNICATION SYSTEM - Disclosed is a method and apparatus for transmitting uplink data by a terminal performing a DRX operation in a mobile telecommunication system. According to the method and apparatus, when a UE transmits the uplink data, the UE variably controls given active and sleep periods in consideration of whether or not retransmission for the uplink data is performed, thereby more flexibly operating in the DRX mode. | 02-09-2012 |
20120040676 | METHOD AND APPRATUS FOR AVOIDING INTEFERENCE IN TERMINAL WITH PLURAL HETEROGENEOUS COMMUNICATION MODULES IN WIRELESS COMMUNICATION SYSTEM - A method for avoiding mutual interference when heterogeneous communication modules such as LTE, wireless LAN, Bluetooth, and GPS coexist in a terminal in a wireless communication system is provided. The terminal may reduce mutual interference when a plurality of communication modules simultaneously operate to efficiently communicate therewith. | 02-16-2012 |
20120040707 | METHOD AND APPARATUS FOR CONFIGURING POWER HEADROOM INFORMATION IN MOBILE COMMUNICATION SYSTEM SUPPORTING CARRIER AGGREGATION - A method and apparatus for configuring Power Headroom Report (PHR) of a User Equipment (UE) efficiently in a mobile communication system supporting carrier aggregation are provided. The method includes generating a header including a LCID for identifying extended PHR and L indicating a length of the extended PHR, and inserting Power Headrooms (PHs) of multiple activated carriers into the extended PHR of one of the carriers. | 02-16-2012 |
20120040708 | METHOD AND APPARATUS FOR REPORTING POWER HEADROOM INFORMATION IN MOBILE COMMUNICATION SYSTEM SUPPORTING CARRIER AGGREGATION - A method and apparatus for reporting Power Headroom (PH) of a User Equipment (UE) per carrier efficiently in a mobile communication system supporting carrier aggregation are provided. The method includes calculating PHs for multiple activated carriers based on whether data channel transmission takes place on each carrier, configuring indicators indicating whether the data channel transmission takes place on the corresponding carriers, and transmitting the PHs and indicators as aggregated in an extended PH Report (PHR) on one of the carriers. | 02-16-2012 |
20120093000 | METHOD AND USER EQUIPMENT APPARATUS FOR RADIO RESOURCE MANAGEMENT IN A MOBILE COMMUNICATION SYSTEM - A method and apparatus are provided for transmitting uplink control information. A UE identifies a resource allocated for transmission of the uplink control information. The UE monitors a downlink transmission channel during an active time when a DRX is configured. The UE starts or restarts a timer when a downlink transmission occurs during the active time. The UE transmits the uplink control information via the identified resource when the timer is running. | 04-19-2012 |
20120113845 | UPLINK SCHEDULING APPARATUS AND METHOD BASED ON UPLINK REPORT IN WIRELESS COMMUNICATION SYSTEM - 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. | 05-10-2012 |
20120113848 | METHOD AND APPARATUS FOR CALCULATING POWER HEADROOM IN CARRIER AGGREGATION MOBILE COMMUNICATION SYSTEM - A power headroom calculation method and apparatus of a User Equipment (UE) are provided for a primary cell Power Headroom (PH) calculation in a Long Term Evolution-Advanced (LTE-A) mobile communication system. The method includes determining whether an activated serving cell includes uplink data and/or uplink control signal to be transmitted, and determining PH of the activated serving cell according to whether the activated serving cell has the uplink data and/or uplink control signal. | 05-10-2012 |
20120176926 | SECONDARY CARRIER ACTIVATION/DEACTIVATION METHOD AND APPARATUS FOR MOBILE COMMUNICATION SYSTEM SUPPORTING CARRIER AGGREGATION - A secondary carrier activation/deactivation method for activating/deactivating secondary carriers in addition to a primary carrier is provided for a mobile communication system supporting carrier aggregation. The method includes identifying, when a secondary carrier control message is received from a base station, carriers to be activated are deactivated, determining, when the message includes a secondary carrier activation command, whether a first time point has arrived, and executing, when the first time point arrives, predetermined first operations. The present invention is advantageous to avoid malfunctions in communication system supporting carrier aggregation by defining UE operations to be taken in SCell activation and deactivation. | 07-12-2012 |
20120176967 | RANDOM ACCESS METHOD AND APPARATUS OF UE IN MOBILE COMMUNICATION SYSTEM - A method and an apparatus for performing random access and uplink transmission of a User Equipment (UE) supporting Carrier Aggregation (CA) are provided. The method includes determining whether a Scheduling Request (SR) is pending, determining, when the SR is pending, whether an uplink transmission resource is available in a current Transmission Time Interval (TTI), determining, when the uplink transmission resource is not available, whether a Physical Uplink Control Channel (PUCCH) resource is configured for transmission of the SR, and initiating, when the PUCCH resource is not configured, a random access process in a primary cell. The random access method and apparatus of the present invention is advantageous to reduce the waste of transmission resources. | 07-12-2012 |
20120176979 | UPLINK TRANSMISSION POWER CONFIGURATION METHOD AND APPARATUS FOR MOBILE COMMUNICATION SYSTEM - A method and an apparatus for configuring uplink transmission power and apparatus in a mobile communication system supporting downlink and uplink carrier aggregation are provided. The method includes determining a per-terminal maximum transmission power and per-serving cell maximum transmission powers based on ΔT | 07-12-2012 |
20120184221 | POWER HEADROOM REPORT METHOD AND APPARATUS OF USER EQUIPMENT - A power headroom report method and apparatus of a User Equipment (UE) provides an efficient resource allocation in a mobile communication system. The power headroom report method of the present disclosure includes calculating a power headroom change by comparing the current power headroom and the previous power headroom. The method also includes determining, when the power headroom change is greater than a predetermined threshold value, whether a report prohibit timer set to a predetermined value has expired. The method further includes reporting the current power headroom when the report prohibit timer has expired, and resetting the prohibit timer to a different value. | 07-19-2012 |
20120184281 | UE CAPABILITY REPORT METHOD AND APPARATUS IN MOBILE COMMUNICATION SYSTEM - A method and an apparatus for reporting a capability of a User Equipment (UE) supporting advanced functions such as Carrier Aggregation (CA) are provided. The method includes checking, when a control message requesting a capability report is received, a Radio Access Technology (RAT) type and transmitting, when the RAT type is set to Evolved Universal Terrestrial Radio Access (EUTRA), at least one band combination information on at least one band combination supported by the terminal. The UE capability report method is capable of reporting the UE capability related to advanced functions, such as CA and Multiple Input Multiple Output (MIMO), to a network efficiently with the least amount of information, thereby resulting in an improvement of radio resource efficiency. | 07-19-2012 |
20120195240 | Method and apparatus for discontinuously receiving packet in a mobile communication system - A method for receiving a packet by a terminal in a mobile communication system including a base station providing a packet, and a terminal that discontinuously receives a packet from the base station in Discontinuous Reception (DRX) cycles each having an active period and a sleep period. The packet reception method includes receiving, from the base station, configuration information for a DRX service, including a DRX cycle length; setting, as a starting point of the DRX cycle, a point at which a first packet is received from the base station; receiving a packet from the base station for an active period at the beginning of the starting point; and transitioning to a sleep period and waiting for a next active period. | 08-02-2012 |
20120207112 | POWER HEADROOM REPORT METHOD AND APPARATUS OF UE - 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. | 08-16-2012 |
20120207130 | METHOD AND APPARATUS OF HANDLING USER EQUIPMENT CATEGORY IN WIRELESS COMMUNICATION SYSTEM - 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. | 08-16-2012 |
20120214537 | METHOD OF EFFICIENTLY REPORTING USER EQUIPMENT TRANSMISSION POWER AND APPARATUS THEREOF - A method and an apparatus for efficiently transmitting or reporting a Power Headroom Report (PHR) of a User Equipment (UE) are provided. The method of transmitting the PHR of the UE in a mobile communication system includes configuring an extended PHR including an indicator corresponding to a variation factor of a maximum transmission power of the UE, and transmitting the extended PHR from the UE to a Base Station (BS). The BS may be notified of a maximum transmission power of the UE and a variation factor corresponding to the maximum transmission power in order to enable efficient scheduling. | 08-23-2012 |
20120257510 | METHOD AND APPARATUS FOR CONTROLLING RANDOM ACCESS IN WIRELESS COMMUNICATION SYSTEM SUPPORTING CARRIER AGGREGATION - A random access procedure control method and apparatus is provided for controlling a random access procedure efficiently in a mobile communication system supporting carrier aggregation. The method for controlling random access procedure of a terminal in a wireless communication system having a primary cell and at least one secondary cell includes initiating a random access procedure in the primary cell and the at least one secondary cells, detecting a random access failure of a terminal performing the random access procedure, determining whether the random access failure is detected in the primary cell or the at least one secondary cell, and determining whether to continue the random access procedure according to a result of the determining of whether the random access failure is detected. | 10-11-2012 |
20120257559 | BATTERY CONSUMPTION CONTROL METHOD OF USER EQUIPMENT IN MOBILE COMMUNICATION SYSTEM - A method and apparatus for controlling battery consumption of the User Equipment (UE) equipped with a feature such as Carrier Aggregation is provided. The battery consumption control method of a terminal operating in Semi-Persistent Scheduling (SPS) mode includes determining, when Hybrid Automatic Repeat reQuest (HARQ) Acknowledgement (ACK) is received, whether a suspension restriction condition is fulfilled, and stopping, when the suspension restriction condition is fulfilled, suspension to flush an HARQ buffer and not monitor a retransmission grant. The battery consumption control method may improve Discontinuous Reception (DRX) efficiency and reduce an unnecessary waste of battery power. | 10-11-2012 |
20120257562 | METHOD AND APPARATUS FOR RECEIVING DATA IN USER EQUIPMENT OF SUPPORTING MULTIMEDIA BROADCAST MULTICAST SERVICE - A method and an apparatus for receiving data in a User Equipment (UE) supporting a Multimedia Broadcast Multicast Service (MBMS) are provided. A method of receiving data by a UE which supports an MBMS includes obtaining first indication information indicating a Multicast/Broadcast over a Single Frequency Network (MBSFN) subframe reserved for an MBSFN, obtaining second indication information indicating a subframe in the MBSFN subframe, the subframe decoding a Physical Multicast CHannel (PMCH), and when although a first subframe is indicated as the MBSFN subframe, the first subframe is not indicated to decode a PMCH and is not of a subframe for a Positioning Reference Signal (PRS), receiving a Physical Downlink Control CHannel (PDCCH) of the first subframe and decoding a corresponding Physical Downlink Shared CHannel (PDSCH). | 10-11-2012 |
20120294287 | METHOD AND APPARATUS FOR SUPPORTING HANDOVER OF USER EQUIPMENT IN MOBILE COMMUNICATION SYSTEM - Defined is a handover procedure of a User Equipment (UE) for which multiple UpLink (UL) carriers requiring different UL Timing Advances (TAs) are aggregated in a mobile communication system. The handover procedure includes admitting execution of handover to a target cell of the UE at the request of a source cell, setting radio resource information to be used by the UE in the target cell and transmitting the set radio resource information to the source cell, determining whether a random access procedure, which is executed, among the multiple UL carriers, with a reference UL carrier or with an UL carrier to which the same UL TA as that of the reference UL carrier is applied, has been completed, and determining that a handover procedure of the UE has been successfully completed if the random access procedure has been completed, and determining that the handover procedure of the UE has failed if the random access procedure fails. | 11-22-2012 |
20120295616 | APPARATUS AND METHOD FOR PERFORMING CELL SELECTION TO HOME CELL OR PRIVATE NETWORK IN A MOBILE COMMUNICATION SYSTEM - An apparatus and method for performing cell selection to a Home cell or a Private network in a mobile communication system are provided, in which a User Equipment (UE) determines a candidate cell by measuring a serving cell and neighbor cells, receives an indicator indicating a Home cell or a Private network in system information from the candidate cell, determines whether the candidate cell is included in a Home cell or Private network list set in the UE, and selects the candidate cell if the candidate cell is included in the Home cell or Private network list. | 11-22-2012 |
20120327833 | METHOD AND APPARATUS FOR DISCONTINUOUS RECEPTION OF CONNECTED TERMINAL IN A MOBILE COMMUNICATION SYSTEM - A method and apparatus for controlling an active time period during a Discontinuous Reception (DRX) operation in a User Equipment (UE) in a mobile communication system. The method includes starting, in the UE, a first timer to monitor control data via a shared control channel, the control data being associated with user data to be transmitted; and starting, in the UE, a second timer, when the control data indicating a new transmission of associated user data is received via the shared control channel while the first timer is running, or restarting, in the UE, the second timer, when the control data indicating a new transmission of associated user data is received via the shared control channel while the second timer is running. | 12-27-2012 |
20130010630 | Method And Apparatus For Reporting Inter-Frequency Measurement Using RACH Message In A Mobile Communication System - A user equipment (UE) is provided which reduces uplink signaling overhead in the process of reporting inter-frequency measurement results over a RACH. For measurement reporting, the UE receives an SIB including a cell information list for non-used frequency cells and a threshold from an RNC, compares signal strengths of signals received from the non-used frequency cells with the threshold, and acquires at least one inter-frequency cell ID indicating at least one non-used frequency cell having signal strength exceeding the threshold from the cell information list. The at least one inter-frequency cell ID is included in a RACH message as measurement result information for the at least one non-used frequency cell, and transmitted to the RNC. The RNC determines that the cell corresponding to the inter-frequency cell ID has signal strength exceeding the threshold. | 01-10-2013 |
20130010712 | APPARATUS AND METHOD FOR PERFORMING CONTENTION BASED ACCESS IN MOBILE COMMUNICATION SYSTEM - Disclosed is a method of performing a contention based access in a UE of a mobile communication system. The method includes: triggering a BSR to an ENB if data to be transmitted to the ENB occurs; and triggering the contention based access if the BSR has been triggered. The method can minimize collision between signals transmitted in the uplink by multiple UEs through contention based transmission resources in a mobile communication system. | 01-10-2013 |
20130028223 | METHOD AND APPARATUS FOR PROCESSING SCHEDULING INFORMATION IN MOBILE COMMUNICATION SYSTEM - A method and an apparatus for processing scheduling information in a terminal into which a plurality of forward carriers and reverse carriers are aggregated are provided. The method includes receiving a control message from a base station, the control message including information on a reverse carrier added by the carrier aggregation, and determining a new buffer state table to be used for reporting the state of buffers to the base station, based on the information included in the control message. | 01-31-2013 |
20130044670 | METHOD AND APPARATUS FOR RECEIVING MULTIMEDIA BROADCAST/MULTICAST SERVICE IN MOBILE COMMUNICATION SYSTEM - An MBMS service reception method and an apparatus are provided for facilitating reception of Multimedia Broadcast/Multicast Service (MBMS) provided in the Long Term Evolution (LTE) system. The method for receiving MBMS in a radio communication system includes receiving User Service Description (USD) information including time information of the MBMS in a connected mode, determining whether a session of the MBMS has started based on the time information, and receiving, when the MBMS session has started, MBMS data of the MBMS session. The MBMS service reception method and apparatus of the present invention facilitates receiving the MBMS service. | 02-21-2013 |
20130044708 | METHOD AND APPARATUS FOR SUPPORTING MULTIPLE FREQUENCY BANDS EFFICIENTLY IN MOBILE COMMUNICATION SYSTEM - A method and an apparatus for transmitting a small size data packet efficiently while reducing signaling overhead in a mobile communication system are provided. The method includes determining to apply a low security transfer procedure, transmitting, to a base station, a Radio Resource Control (RRC) connection request message including a temporary Data Radio Bearer (DRB) request to which Access Stratum (AS) security is not applied, receiving an RRC connection setup message, including a temporary DRB configuration, from the base station, and transmitting an Internet Protocol (IP) packet over the temporary DRB. | 02-21-2013 |
20130053103 | METHOD AND APPARATUS FOR SUPPORTING MULTIPLE FREQUENCY BANDS IN MOBILE COMMUNICATION SYSTEM - A method and an apparatus for supporting multiple frequency bands efficiently in a mobile communication system are provided. The method includes generating first system information including a frequency band indicator indicating a frequency band supported by the base station and an additional frequency band indicator indicating at least one frequency band supported by the base station, and broadcasting the first system information. | 02-28-2013 |
20130208711 | METHOD AND APPARATUS FOR HANDLING IN-DEVICE CO-EXISTENCE INTERFERENCE IN A USER EQUIPMENT - A method and apparatus for handling in-device co-existence interference in a user equipment are provided. In an exemplary method, a Long Term Evolution (LTE) activity scheduled to be performed during an inactive time period of an LTE module in a user equipment is determined. It is determined whether the LTE module is to be allowed to perform the LTE activity during the inactive time period. If the LTE activity is to be allowed, then the LTE module is allowed to perform the LTE activity during the inactive time period. Otherwise, the LTE module is not allowed to perform the LTE activity during the inactive time period to provide interference free time for an Industrial, Scientific and Medical (ISM) module in the user equipment. Moreover, the disallowed LTE activity is scheduled to be performed during an active time period following the inactive time period. | 08-15-2013 |
20130215787 | METHOD AND APPARATUS FOR A TERMINAL TO SELECT A CELL IN A HETEROGENEOUS NETWORK - The present invention relates to a cell selection method of a terminal in a heterogeneous network, and cell selection method of a terminal in a heterogeneous network according to the present invention includes receiving a measurement restriction pattern from a base station; and selecting a cell based on the measurement restriction pattern. According to an embodiment of the present invention, it is possible to select a cell accurately and efficiently. | 08-22-2013 |
20130223323 | METHOD AND DEVICE FOR RECEIVING A SUBFRAME IN DIFFERENT FORMS IN A WIRELESS COMMUNICATION SYSTEM - The present invention proposes a method for preventing, when two types of subframes (first subframe and second subframe) exist in a wireless communication system, a high version terminal from performing unnecessary operation for the second subframe. Through the present invention, the high version terminal skips unnecessary operation, resulting in reduction of unnecessary power consumption. | 08-29-2013 |
20130279343 | METHOD AND APPARATUS FOR EFFICIENTLY REPORTING A CQI/CSI MEASUREMENT REPORT - To solve the above-mentioned problem, a method in which a terminal reports channel state information comprises the following steps: receiving, from a base station, information on a plurality of patterns to be used in a channel state measurement; receiving, from the base station, selection information for selecting a pattern from among the plurality of patterns that is to be used in the channel state information to be reported to the base station; measuring a channel state using the information on the plurality of patterns; and selecting a portion of the measured channel state based on the selection information, and reporting the selected portion to the base station. The above-described solution enables the efficient reporting of channel state information including CQIICSI, thus improving communication efficiency. | 10-24-2013 |
20140036874 | INTER-FREQUENCY/INTER-RAT CELL RESELECTION METHOD AND APPARATUS OF UE IN LTE MOBILE COMMUNICATION SYSTEM - An inter-system cell selection method of a terminal in a mobile communication system is provided. The present disclosure may be embodied in the 3 | 02-06-2014 |
20140112255 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING STATUS REPORT COMPRISING RECEIVED STATUS OF PACKET DATA IN A MOBILE COMMUNICATION SYSTEM - A method for transmitting packet data units Packet Data Units (PDUs) at a PDU transmitter in a communication system is provided. The method includes transmitting a first PDU comprising a PDU header and a data portion, receiving Negative Acknowledgement NACK information for the first PDU, segmenting the first PDU to form one or more PDU segments if a size of a second PDU for retransmission is smaller than a size of the first PDU, wherein each of the one or more PDU segment comprises a PDU segment header and a data portion, and transmitting the one or more PDU segment to a PDU receiver. | 04-24-2014 |
20140119175 | MOBILE TERMINAL PREPARATION - A method of operating a mobile terminal in a wireless communications network is provided. The method includes connecting with a serving cell to establish a radio link enabling the transmission of data via the serving cell, receiving signaling data associated with the serving cell, the signaling data being configured to prepare the mobile terminal for the re-establishment of a connection of the mobile terminal to a different cell in the event of radio link failure on the serving cell, and processing the signaling data in order to store fallback data which is to be used in the event of radio link failure on the serving cell. | 05-01-2014 |
20140140218 | METHOD AND APPARATUS FOR COMPUTING LAYER 2 LOAD CONDITIONS IN A WIRELESS NETWORK ENVIRONMENT - A method and a system for measuring Layer 2 (L2) load conditions in a wireless network environment are provided. The method of an evolved Node B (eNB) for measuring L2 load conditions in a wireless network environment includes determining total number of Physical Resource Blocks (PRBs) allocated to the eNB in uplink and downlink and determining number of PRBs which are unavailable in uplink and downlink. The method further includes computing number of PRBs available for use during a time period by subtracting the number of unavailable PRBs from the number of allocated PRBs. Moreover, the method includes reporting the number of PRBs available for use during a time period to an Operation And Maintenance (OAM) entity in the wireless network environment. | 05-22-2014 |
20140146697 | METHOD AND APPARATUS FOR PERFORMING COMMUNICATION IN A WIRELESS COMMUNICATION SYSTEM - A method and apparatus for performing communication in a wireless communication system are provided. The method includes receiving Measurement Gap (MG) configuration information related to the measurement gap, determining a subframe number specifying a starting point of the measurement gap based on the measurement gap configuration information, starting the measurement gap at an end of a subframe immediately before a subframe of the determined subframe number, performing a predetermined measurement operation during the measurement gap, and performing a predetermined operation in a subframe immediately after the measurement gap based on a duplexing mode of a User Equipment (UE) and a type of the subframe immediately before the measurement gap. | 05-29-2014 |
20140146907 | METHOD AND APPARATUS FOR PERFORMING COMMUNICATION IN A WIRELESS COMMUNICATION SYSTEM - A method and apparatus for performing communication in a wireless communication system are provided. The method includes identifying a transmission mode configured for a serving cell by a Base Station (BS), by a User Equipment (UE), identifying an antenna configuration of the BS by the UE, determining the number of bits for a Rank Indication (RI) representing the number of layers based on the transmission mode and the antenna configuration, and generating an RI using the determined number of bits and transmitting the RI in transmission resources of the serving cell to the BS by the. | 05-29-2014 |
20140211742 | METHOD AND APPARATUS FOR SUPPORTING MULTIPLE FREQUENCY BANDS IN MOBILE COMMUNICATION SYSTEM - A method and an apparatus for supporting multiple frequency bands efficiently in a mobile communication system are provided. The method includes generating first system information including a frequency band indicator indicating a frequency band supported by the base station and an additional frequency band indicator indicating at least one frequency band supported by the base station, and broadcasting the first system information. | 07-31-2014 |
20140211744 | SECONDARY CARRIER ACTIVATION/DEACTIVATION METHOD AND APPARATUS FOR MOBILE COMMUNICATION SYSTEM SUPPORTING CARRIER AGGREGATION - A method for activating/deactivating secondary carriers of a User Equipment (UE) in a mobile communication system supporting carrier aggregation is provided. The method comprises, receiving a control message including an activation/deactivation Control Element (CE) in a first sub-frame from a Base station, identifying an activation command or a deactivation command of at least one secondary carrier based on the control message, determining whether a current sub-frame is a second sub-frame or not, performing at least one first operation for the at least one secondary carrier in a second sub-frame, and performing, when the activation/deactivation CE indicates deactivation of the at least one secondary carrier, at least one second operation for the at least one secondary carrier no later than the second sub-frame. | 07-31-2014 |
20140307670 | RANDOM ACCESS METHOD AND APPARATUS OF UE IN MOBILE COMMUNICATION SYSTEM - A method and an apparatus for performing random access and uplink transmission of a User Equipment (UE) supporting Carrier Aggregation (CA) are provided. The method includes determining whether a Scheduling Request (SR) is pending, determining, when the SR is pending, whether an uplink transmission resource is available in a current Transmission Time Interval (TTI), determining, when the uplink transmission resource is not available, whether a Physical Uplink Control Channel (PUCCH) resource is configured for transmission of the SR, and initiating, when the PUCCH resource is not configured, a random access process in a primary cell. The random access method and apparatus of the present invention is advantageous to reduce the waste of transmission resources. | 10-16-2014 |
20140328284 | SECONDARY CARRIER ACTIVATION/DEACTIVATION METHOD AND APPARATUS FOR MOBILE COMMUNICATION SYSTEM SUPPORTING CARRIER AGGREGATION - A method for activating/deactivating secondary carriers of a User Equipment (UE) in a mobile communication system supporting carrier aggregation is provided. The method comprises, receiving a control message including an activation/deactivation Control Element (CE) in a first sub-frame from a Base station, identifying an activation command or a deactivation command of at least one secondary carrier based on the control message, determining whether a current sub-frame is a second sub-frame or not, performing at least one first operation for the at least one secondary carrier in a second sub-frame, and performing, when the activation/deactivation CE indicates deactivation of the at least one secondary carrier, at least one second operation for the at least one secondary carrier no later than the second sub-frame. | 11-06-2014 |
20140341011 | METHOD AND APPARATUS FOR CONTROLLING RANDOM ACCESS IN WIRELESS COMMUNICATION SYSTEM SUPPORTING CARRIER AGGREGATION - A random access procedure control method and apparatus is provided for controlling a random access procedure efficiently in a mobile communication system supporting carrier aggregation. The method for controlling random access procedure of a terminal in a wireless communication system having a primary cell and at least one secondary cell includes initiating a random access procedure in the primary cell and the at least one secondary cells, detecting a random access failure of a terminal performing the random access procedure, determining whether the random access failure is detected in the primary cell or the at least one secondary cell, and determining whether to continue the random access procedure according to a result of the determining of whether the random access failure is detected. | 11-20-2014 |
20140370905 | UE CAPABILITY REPORT METHOD AND APPARATUS IN MOBILE COMMUNICATION SYSTEM - A method and an apparatus for reporting a capability of a User Equipment (UE) supporting advanced functions such as Carrier Aggregation (CA) are provided. The method includes checking, when a control message requesting a capability report is received, a Radio Access Technology (RAT) type and transmitting, when the RAT type is set to Evolved Universal Terrestrial Radio Access (EUTRA), at least one band combination information on at least one band combination supported by the terminal. The UE capability report method is capable of reporting the UE capability related to advanced functions, such as CA and Multiple Input Multiple Output (MIMO), to a network efficiently with the least amount of information, thereby resulting in an improvement of radio resource efficiency. | 12-18-2014 |
20150038158 | METHOD OF EFFICIENTLY REPORTING USER EQUIPMENT TRANSMISSION POWER AND APPARATUS THEREOF - A method and an apparatus for efficiently transmitting or reporting a Power Headroom Report (PHR) of a User Equipment (UE) are provided. The method of transmitting the PHR of the UE in a mobile communication system includes configuring an extended PHR including an indicator corresponding to a variation factor of a maximum transmission power of the UE, and transmitting the extended PHR from the UE to a Base Station (BS). The BS may be notified of a maximum transmission power of the UE and a variation factor corresponding to the maximum transmission power in order to enable efficient scheduling. | 02-05-2015 |
20150043418 | METHOD AND APPARATUS FOR RECEIVING MULTIMEDIA BROADCAST/MULTICAST SERVICE IN MOBILE COMMUNICATION SYSTEM - An MBMS service reception method and an apparatus are provided for facilitating reception of Multimedia Broadcast/Multicast Service (MBMS) provided in the Long Term Evolution (LTE) system. The method for receiving MBMS in a radio communication system includes receiving User Service Description (USD) information including time information of the MBMS in a connected mode, determining whether a session of the MBMS has started based on the time information, and receiving, when the MBMS session has started, MBMS data of the MBMS session. The MBMS service reception method and apparatus of the present invention facilitates receiving the MBMS service. | 02-12-2015 |
20150078286 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING DATA USING PLURALITY OF CARRIERS IN MOBILE COMMUNICATION SYSTEM - The present invention relates to a method and apparatus for transmitting and receiving data using a plurality of carriers in a mobile communication system. The communication method by a terminal according to one embodiment of the present invention includes the steps of: receiving a secondary cell (SCell) adding command including setting information on an SCell to be added from a primary serving cell (PCell); transmitting a preamble to the SCell to be added; receiving a random access response message (RAR) for the SCell to be added; and, if the SCell adding command includes an indicator indicating that a first base station to which the SCell to be added belongs and a base station to which the PCell belongs are different from each other, applying parameters included in the RAR to the SCell that transmits the RAR. According to the embodiment of the present invention, by aggregating carriers between different base stations, a terminal can have increased chances of transmitting and receiving data at high speed through the carrier aggregation. | 03-19-2015 |