Patent application number | Description | Published |
20080205323 | Apparatus and method for resource allocation considering buffering in relay wireless communication system - A relay wireless communication system is provided. A Relay Station (RS) includes a buffer for storing packets to be sent to at least one Mobile Station (MS); a scheduler for allocating resources to the at least one mobile station of which the packets are stored to the buffer; a generator for generating a message which comprises information about at least one mobile station of which packets are not stored to the buffer; and a communicator for sending the message to a Base Station (BS) and sending the packets stored to the buffer to the at least one mobile station allocated the resources. | 08-28-2008 |
20080207117 | APPARATUS AND METHOD FOR SELECTING A RELAY MODE IN A MULTIHOP RELAY BROADBAND WIRELESS COMMUNICATION SYSTEM - An apparatus and a method for selecting one of a plurality of relay modes in a wireless communication system are provided. The method includes checking a channel state between a Mobile Station (MS) and each of at least one Relay Station (RS), selecting the relay mode for supporting a relay service using the determined channel state between the MA and each of the at least one RS, and providing the relay service to the MS using the selected relay mode. Thus, system throughput and outage performance can be enhanced by using the appropriate relay mode based on the MS distribution or the channel condition. | 08-28-2008 |
20080207193 | APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING CONTROL INFORMATION IN MULTI-HOP RELAY BROADBAND WIRELESS COMMUNICATION SYSTEM - An apparatus and method for transmitting control information to a Relay Station (RS) in a multi-hop relay broadband wireless communication system is disclosed. The apparatus includes a generator, a controller, and a communication unit. The generator generates control information to be transmitted to a lower RS. The controller controls and transmits the control information during a first relay link transmission interval among at least one relay link transmission interval distributed within a frame. The communication unit transmits the control information to the lower RS. | 08-28-2008 |
20080209299 | APPARATUS AND METHOD FOR RETRANSMITTING REQUEST IN WIRELESS RELAY COMMUNICATION SYSTEM - Data retransmission apparatus and method in a wireless relay communication system are provided. It is checked whether an Acknowledgement (ACK) message or a Negative ACK (NACK) message for data is received from a Relay Station (RS), which receives the data from a Mobile Station (MS). Scheduling information for transmitting the data is transmitted to the RS, when the ACK message is received from the RS. Errors are checked for in of the data, when the data is received from the RS. The RS is requested to retransmit the data, when the data has an error. Accordingly, since the RS retransmits only the error-free data to the BS, the BS can enhance the data reliability. | 08-28-2008 |
20080209301 | APPARATUS AND METHOD FOR TRANSMITTING CONTROL MESSAGE IN A WIRELESS COMMUNICATION SYSTEM USING RELAYING - An apparatus and method for transmitting an ACK/NACK message from an RS in a wireless communication system using relaying is disclosed, in which the RS checks scheduling information for data transmission from a lower node, receives data from the lower node according to the scheduling information, checks errors in the data, generates error report information indicating whether the data has errors, and transmits the error report information to an upper node. | 08-28-2008 |
20080212516 | Appartus and method for negotiating frame offset between base station and relay station in broadband wireless communication system using multi-hop relay scheme - Provided are an apparatus and method for negotiating a frame offset between a Base Station (BS) and a Relay Station (RS) in a wireless communication system using a multi-hop relay scheme. A communication method of a superordinate station includes, upon detecting an initial access of an relay station, determining an offset value between a frame number used in the superordinate station and a frame number to be used in the relay station; generating a message including RS frame offset information corresponding to the offset value; and transmitting the generated message to the relay station. Accordingly, since the base station and the relay station share the frame offset, the base station can transmit a specific broadcast message in advance to the relay station by considering the frame offset, and the relay station can transmit data, which has to be transmitted in synchronization with the base station at the same time point or at the same frame number, to a Mobile Station (MS) at an exact time point. | 09-04-2008 |
20080219205 | APPARATUS AND METHOD FOR RELEASING MOBILE STATION INFORMATION IN WIRELESS ACCESS COMMUNICATION SYSTEM USING MULTI-HOP RELAY SCHEME - Disclosed is an apparatus and method for releasing MS information in a wireless access communication system using a multi-hop relay scheme. In a method for a communication operation of a BS, when a data transmission path of an MS changes, one or more RSs from which information about the MS is to be removed are determined. Thereafter, a path removal message is generated and the path removal message is transmitted to the one or more RSs. | 09-11-2008 |
20080240014 | APPARATUS AND METHOD FOR ASYNCHRONOUS CONTROL MESSAGE TRANSMISSION FOR DATA RETRANSMISSION IN WIRELESS RELAY COMMUNICATION SYSTEM - An apparatus and a method for data retransmission in a multihop relay wireless communication system are provided. The retransmission method includes determining whether an error is detected in data received from an upper node; generating a message indicative of the data error; and sending the message to the upper node at a time that is not appointed with the upper node. Therefore, it is possible to reduce a retransmission delay time that occurs during synchronous retransmission. | 10-02-2008 |
20080248793 | APPARATUS AND METHOD FOR DATA RETRANSMISSION IN MULTIHOP RELAY WIRELESS COMMUNICATION SYSTEM - An apparatus and a method for sending a control message for retransmission in a multihop relay wireless communication system are provided. Data received from a lower node is checked for errors. The data is transmitted to an upper node, when the data has no errors. When two or more messages, which include at least one of Acknowledgement (ACK) messages and Negative ACK (NACK) messages in response to a data reception are received from one or more lower nodes, the two or more messages are transmitted to the upper node at the same time. Accordingly, the RS can transmit the control messages for the ARQ provided from the lower nodes, to the upper node at the same time. | 10-09-2008 |
20080250293 | APPARATUS AND METHOD FOR HANDLING DATA ERROR IN DATA TRANSMISSION SYSTEM INCLUDING RELAY STATION - A method and apparatus for handling data error in a data transmission system including a relay station which receives a data from a transmission apparatus and transmits the data to a receiving apparatus is provided. | 10-09-2008 |
20090067364 | APPARATUS AND METHOD FOR DETERMINING TIME TO RESPONSE OF RETRANSMISSION IN A MULTIHOP RELAY WIRELESS COMMUNICATION SYSTEM - A multihop relay wireless communication system is provided. A Base Station (BS) includes a calculator for calculating an ACKnowledge (ACK)/Non ACK (NACK) transmission time of at least one Relay Station (RS) using retransmission parameter values, and a transmitter for transmitting the ACK/NACK transmission time information to the at least one RS. | 03-12-2009 |
20090094498 | APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING AUTOMATIC RETRANSMISSION REQUEST FEEDBACK INFORMATION ELEMENT IN A COMMUNICATION SYSTEM - An Automatic Retransmission reQuest (ARQ) data block reception apparatus and method in a communication system is provided. In the ARQ method, an ARQ feedback Information Element (IE) is transmitted to an ARQ data block transmission apparatus. The ARQ feedback IE includes a first field for indicating a Connection IDentifier (CID) of an ARQ connection, a second field for indicating the presence/absence of an additional ARQ feedback IE after the ARQ feedback IE, a third field for indicating a type of an Acknowledgement (ACK) MAP included in the ARQ feedback IE, a fourth field for indicating a Block Sequence Number (BSN) of an ARQ data block, and m ACK MAP fields. The m ACK MAP fields each include information indicating presence/absence of an additional ACK MAP field after a corresponding ACK MAP field, and an ACK MAP indicating success/failure in normal reception for each of n ARQ data blocks, wherein m and n each denote an integer greater than or equal to 1. | 04-09-2009 |
20090122746 | APPARATUS AND METHOD FOR ACK CHANNEL TRANSMISSION IN WIRELESS RELAY COMMUNICATION SYSTEM - An apparatus and a method for transmitting ACKnowledge (ACK) channels by a Relay Station (RS) in a wireless communication system are provided. The method includes, when receiving one or more ACK information from one or more lower nodes, checking ACK channel constitution information provided from an upper node, arranging one or more ACK channels to transmit corresponding ACK information according to the ACK channel constitution information by distinguishing ACK information of one or more data scheduled by the upper node and ACK information of one or more retransmission data not scheduled by the upper node, and transmitting the one or more ACK information to the upper node in the arranged ACK channels. | 05-14-2009 |
20090232044 | APPARATUS AND METHOD FOR RETRANSMITTING OF DATA IN A WIRELESS COMMUNICATION SYSTEM USING RELAY - An apparatus and method for retransmitting of data in a wireless communication system are provided. The method includes transmitting data to at least one lower node, temporarily storing the data transmitted to the lower node, if ACKnowledgement (ACK) information of a relay link is not received for a predetermined time after data transmission or if the ACK information of the relay link is received from a lower Relay Station (RS), identifying if error occurrence information of an access link is received from the lower RS, and, if the ACK information of the access link is received from the lower RS, recognizing that data transmission to a Mobile Station (MS) succeeds. | 09-17-2009 |
20090252081 | APPARATUS AND METHOD FOR SUPPORTING VARIOUS SYSTEMS IN A MULTIHOP RELAY BROADBAND WIRELESS COMMUNICATION SYSTEM - A mobile station compliant with a legacy system and a mobile station compliant with a new system are both supported in a multihop relay broadband wireless communication system. A DownLink (DL) period of the Base Station (BS) includes a legacy zone for communicating with entities of a legacy system and a new zone for communicating with entities of a new system. Operations of the BS include transmitting DL data to entities of the legacy system via the legacy zone, and transmitting DL data to entities of the new system via the new zone which follows the legacy zone in a time axis. | 10-08-2009 |
20090252082 | APPARATUS AND METHOD FOR SUPPORTING HETEROGENEOUS SYSTEMS IN MULTI-HOP RELAY BROADBAND WIRELESS COMMUNICATION SYSTEM - An apparatus and method for supporting heterogeneous systems in a multi-hop relay wireless communication system are provided. In a method of transmitting and receiving a DownLink (DL) frame of a Base Station (BS) in a multi-hop relay wireless communication system employing heterogeneous systems, the DL frame of the BS includes a legacy zone for communication with a legacy Mobile Station (MS), an access zone of a new zone for communication with a new MS, and a relay zone of the new zone for communication with a new Relay Station (RS). The method includes transmitting DL data to the legacy MS in the legacy zone, transmitting the DL data to the new MS in the access zone of the new zone, and transmitting the DL data to the new RS in the relay zone of the new zone. | 10-08-2009 |
20090252083 | APPARATUS AND METHOD FOR SUPPORTING DIFFERENT SYSTEM IN A BROADBAND WIRELESS COMMUNICATION SYSTEM USING MULTI-HOP RELAY SCHEME - An apparatus and method for supporting a different system in a broadband wireless communication system using a multi-hop relay scheme are provided. A DownLink/UpLink (DL/UL) frame of a Base Station (BS) includes a legacy access zone for communicating with a legacy Mobile Station (MS), a relay zone for communicating with a legacy Relay Station (RS), and a new zone for communicating with a new MS. A DL/UL frame of an RS includes a legacy access zone for communicating with a legacy MS and a legacy relay zone for communicating with a new BS by legacy standards. | 10-08-2009 |
20090268658 | Apparatus and method for relay service in wireless communication system - An apparatus and a method for relay service in a wireless communication system are provided. A method for constituting a frame for a relay service in a wireless communication system includes configuring Downlink and Uplink subframes for a Base Station (BS) to transmit and receive signals to and from a Mobile Station via one or more relay stations over one or more communication zones. Thus, the frames for the multihop relay service can be constituted with ease, the multihop relay service can be provided not to drive the relay service data into a particular part of the frame, and the service coverage of the MS can be extended. | 10-29-2009 |
20090303919 | APPARATUS AND METHOD FOR PROCESSING PREAMBLE CHANGE OF RELAY STATION IN BROADBAND WIRELESS ACCESS COMMUNICATION SYSTEM USING MULTIHOP RELAY - An apparatus and a method for processing a change of a preamble of a Relay Station (RS) are provided. An operating method of a Base Station (BS) includes providing a relay service via an RS, determining whether a preamble of the RS needs to change, when it is necessary to change the preamble of the RS, sending a preamble change command message to the RS and, when the preamble of the RS is changed, sending a preamble change notification message informing of the preamble change to at least one lower node of the RS. | 12-10-2009 |
20100002631 | APPARATUS AND METHOD FOR NOTIFYING CHANGE OF SYSTEM CONTROL INFORMATION IN A BROADBAND WIRELESS COMMUNICATION SYSTEM - An apparatus and method for notifying a change of system control information in a wireless communication system are provided. The method includes, changing a Group Configuration Change Counter (GCCC) and upon change of a Secondary-Super Frame Header/Sub-Packet1 (S-SFH/SP1) whose transmission period is changeable within a range of one or more super frames, changing the GCCC and information representing the change of the common control message upon change of at least one common control message, and transmitting the GCCC and the information representing the change of the at least one common control message. | 01-07-2010 |
20100050037 | APPARATUS AND METHOD FOR AUTOMATIC RETRANSMISSION REQUEST (ARQ) FEEDBACK IN WIRELESS COMMUNICATION SYSTEM - An apparatus and a method for Automatic Repeat reQuest (ARQ) feedback in a wireless communication system are provided. A method for the ARQ feedback at a receiving end includes when receiving an ARQ block from the transmitting end, checking for error in the ARQ block, when the ARQ block has no error, initializing and driving a timer used for determining whether to perform the ARQ feedback according to reception of a next ARQ block, when receiving the next ARQ block without error before the timer expires, initializing and driving the timer, and when the timer expires, performing the ARQ feedback in relation to at least one ARQ block received without error. | 02-25-2010 |
20100050041 | APPARATUS AND METHOD FOR GENERATING AUTOMATIC REPEAT REQUEST (ARQ) FEEDBACK MESSAGE IN WIRELESS COMMUNICATION SYSTEM - An apparatus and a method for generating an Automatic Repeat reQuest (ARQ) feedback message in a wireless communication system are provided. A method for generating an ARQ feedback message at a receiving end in a wireless communication system includes, generating first ARQ feedback information of a first scheme, the first ARQ feedback information comprising information of a first erroneous ARQ block of one or more ARQ blocks for which the ARQ feedback is not performed, generating second ARQ feedback information of a second scheme indicative of error of at least one ARQ block not represented in the first ARQ feedback information, generating an ARQ feedback message comprising the first ARQ feedback information and the second ARQ feedback information, and transmitting the ARQ feedback message to a transmitting end. | 02-25-2010 |
20100054162 | APPARATUS AND METHOD FOR FRAME GENERATION FOR A FULL DUPLEX RELAY - An apparatus and method for generating a frame in a communicating system supporting a full duplex relay. A controller configures a legacy zone and a new zone in a downlink section of the frame according to a TDM scheme, configures the new zone of the downlink section to include an access zone and a relay zone according to a TDM scheme, configures a legacy zone and a new zone in an uplink section of the frame according to the TDM scheme, and configures the new zone of the uplink section to include an access zone and a relay zone according to an FDM scheme. | 03-04-2010 |
20100054189 | APPARATUS AND METHOD FOR GENERATING MAC PROTOCOL DATA UNIT IN WIRELESS COMMUNICATION SYSTEM - An apparatus and method for generating a Media Access Control (MAC) Protocol Data Unit (MPDU) in a wireless communication system are provided. The method includes reconstructing at least one MAC Service Data Unit (MSDU) according to scheduling information of the MAC layer and generating at least one MPDU data portion, adding control information to each MPDU data portion and generating at least one MPDU payload, adding a General MAC Header (GMH) to each MPDU payload and generating at least one MPDU, and transmitting the MPDU to a receive end. The control information includes at least one piece of MSDU information constituting each MPDU data portion. The GMH includes length information on the MPDU and Connection IDentifier (CID) information. | 03-04-2010 |
20100110972 | APPARATUS AND METHOD FOR PROCESSING THE RELAYED DATA IN A MULTIHOP RELAY BROADBAND WIRELESS ACCESS COMMUNICATION SYSTEM - An apparatus and a method for processing the relayed data in a multihop relay broadband wireless access communication system are provided. A method for an operation of a Relay Station (RS) includes determining whether a packet received from an upper node comprises a Relay Media Access Control (MAC) Header (RMH), when the RMH is comprised in the received packet, determining whether the RMH comprises access RS information, and when the access RS information is not comprised in the RMH, removing the RMH from the received packet and transmitting the packet to a lower Mobile Station (MS). | 05-06-2010 |
20100208692 | Apparatus and method for supporting intra-base station handover in a multi-hop relay broadband wireless communication system - An apparatus is capable of supporting an intra-BS handover of a Mobile Station (MS) that can distinguish a Relay Station (RS) and a Base Station (BS) in a multi-hop relay broadband wireless communication system. A handover of an MS in a multi-hop relay wireless communication system includes receiving a neighbor advertisement message. When a handover command message that initiates a handover to a target node is received, information on a target node is acquired, and an upper BS of the target node is identified. When the identified upper BS of the target node is the same as an upper BS of the serving node, control information that has been previously used in a serving node is used in the target node, and communication with the target node is performed. | 08-19-2010 |
20100214986 | METHOD AND SYSTEM FOR MANAGING CONNECTION PAYLOAD INFORMATION IN MEDIUM ACCESS CONTROL PROTOCOL DATA UNIT - A method and system for encoding connection payload information of a plurality of connection payloads in a Medium Access Control (MAC) Protocol Data Unit (PDU) are provided. The method includes encoding connection payload information of a first connection payload from the plurality of connection payloads in a first header of the MAC PDU. The method also includes encoding connection payload information of each of a second set of connection payloads from the plurality of connection payloads in a second header of the MAC PDU, wherein the second set of connection payloads includes the plurality of connection payloads excluding the first connection payload. Further, the method sends the MAC PDU with encoded information. Thereafter, the method also includes a procedure to decode connection payload information of a plurality of connection payloads from a Medium Access Control (MAC) Protocol Data Unit (PDU). | 08-26-2010 |
20100215009 | METHOD AND APPARATUS FOR RESOURCE ALLOCATION IN A MULTI HOP RELAY NETWORK - A method of resource allocation by a base station in a multi hop relay network includes identifying a number of relays participating in a cooperative communication; dividing a sub-frame resource interval of the relay according to the identified number of relays in a time domain; and allocating resources so that only two relays can communicate with each other in a divided resource zone, and transmitting data while performing multi-hopping between the relays, wherein only the two relays communicate with each other during the hopping. | 08-26-2010 |
20100251081 | APPARATUS AND METHOD FOR ARQ FEEDBACK POLLING IN WIRELESS COMMUNICATION SYSTEM - An apparatus and method for Automatic Repeat reQuest (ARQ) feedback polling in a wireless communication system are provided. The method for ARQ feedback polling includes transmitting at least one ARQ block to a receive end, polling ARQ feedback to the receive end using an extended header, determining if ARQ feedback information is received from the receive end within a lifetime of ARQ feedback, determining success or failure of transmission of the at least one ARQ block through the ARQ feedback information if it is determined that the ARQ feedback information is received within the lifetime of ARQ feedback, and polling ARQ feedback again to the receive end if it is determined that the ARQ feedback information is not received within the lifetime of ARQ feedback. | 09-30-2010 |
20100269006 | APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING AUTOMATIC REPEAT REQUEST FEEDBACK MESSAGE IN WIRELESS COMMUNICATION SYSTEM - An apparatus and a method for transmitting and receiving an Automatic Repeat reQuest (ARQ) feedback message in a wireless communication system are provided. A method for receiving an ARQ feedback message at a transmitting unit in a wireless communication system includes allocating a fixed-size resource for transmitting an ARQ feedback message, to a receiving unit, the resource being an unsolicited bandwidth, and receiving an ARQ feedback message or a resource request message from the receiving unit over the fixed-size resource allocated. | 10-21-2010 |
20110002347 | METHOD AND SYSTEM FOR ENCODING AND DECODING MEDIUM ACCESS CONTROL LAYER PACKET - A method and system for encoding and decoding Medium Access Control (MAC) Protocol Data Units (PDUs) in a MAC layer packet is provided. The method includes receiving a request from a Physical (PHY) layer to transmit the MAC layer packet, wherein the MAC layer packet is transmitted in a predefined number of bytes that is determined in the PHY layer, and filling unfilled portion in the MAC layer packet with at least one fixed pattern in a predefined pattern set when a number of bytes that are unfilled is equal to or greater than 1. The unfilled portion includes total number of bytes that are unfilled in the MAC layer packet. Thereafter, the unfilled portion of the MAC layer packet is filled with a predefined pattern set when the number of predefined bytes is greater than the cumulative size of the available MAC PDUs arranged in the MAC layer packet. | 01-06-2011 |
20110004800 | Method and system for transmitting and receiving management message in communication network - A method for transmitting management message by a transmitting device in a communication network includes receiving a management message that is to be transmitted in the communication network. The transmitting device determines whether a feedback is required for the management message when the management message is transmitted in the communication network. The transmitting device also includes a feedback request information in a Medium Access Control (MAC) Protocol Data Unit (PDU) including a last fragment of the management message. The management message can be transmitted in one or more MAC PDUs and can be divided into one or more fragments. The transmitting device also transmits the MAC PDU indicating the feedback request information. | 01-06-2011 |
20110007753 | METHOD AND SYSTEM FOR ENCODING AND DECODING LENGTH OF MEDIUM ACCESS CONTROL PROTOCOL DATA UNIT - A method and system for encoding the length of a Medium Access Control (MAC) Protocol Data Unit (PDU) is provided. The method includes partitioning the length of the MAC PDU into a first part and a second part when the length of the MAC PDU is greater than a first predefined value, encoding the first part in a first header of the MAC PDU, encoding the second part in a second header of the MAC PDU, encoding the length of the MAC PDU in a first header of the MAC PDU when the length of the MAC PDU is less than or equal to first predefined value, and transmitting the MAC PDU with the encoded length of the MAC PDU to a receiving communication device. In another embodiment, the invention includes a method and apparatus for decoding an encoded length of a MAC PDU. | 01-13-2011 |
20110069743 | Apparatus and method for configuring frame structure in relay wireless communication system - An apparatus and method for reduces an overhead caused by an operation transition gap in a Relay Station (RS) of a relay wireless communication system. The method includes identifying a signal delay time with an upper node. A transmission/reception operation transition time is determined through a negotiation with the upper node. An idle time is identified. An overhead caused by a transmission/reception operation transition is determined with consideration of a start time point of an Uplink (UL) subframe dependent on the signal delay time, the transmission/reception operation transition time, and the idle time. And communication is performed considering the overhead. The start time point of the UL subframe is set earlier than a start time point of a UL subframe of the upper node in consideration of the idle time. | 03-24-2011 |
20110103270 | APPARATUS AND METHOD FOR CONFIGURING FRAME STRUCTURE IN FDD WIRELESS COMMUNICATION SYSTEM - An apparatus and method for reducing an overhead resulting from an transition gap in a Relay Station (RS) of a Frequency Division Duplex (FDD) wireless communication system are provided. The method includes determining transmission/reception transition time information through a negotiation with an upper node, identifying a signal delay time with the upper node, identifying a first reference time (R_Idle_Time), determining an overhead of a DownLink (DL) frame and an overhead of an UpLink (UL) frame resulting from transmission/reception transition in consideration of at least one of the transition time information, the signal delay time, the first reference time, and a second reference time (Idle_Time), and performing communication based on the overhead of the DL frame and the overhead of the UL frame. | 05-05-2011 |
20110107168 | APPARATUS AND METHOD FOR GENERATING ARQ FEEDBACK MESSAGE IN WIRELESS COMMUNICATION SYSTEM - An apparatus and a method for generating an Automatic Repeat reQuest (ARQ) feedback message in a wireless communication system are provided. The method includes generating first feedback information of at least one ARQ block, determining whether any ARQ blocks include at least one successfully received ARQ sub-block, when the at least one erroneous ARQ block includes at least one successfully received ARQ sub-block, adding second feedback information of the ARQ sub-blocks to the first feedback information of the ARQ blocks using a field indicating whether the second feedback information is added and a field indicating the erroneous ARQ blocks including the at least one successfully received ARQ sub-block, and sending the first feedback information with the second feedback information added, to the transmitting stage. | 05-05-2011 |
20110161767 | APPARATUS AND METHOD OF COMMUNICATING AUTOMATIC REPEAT REQUEST (ARQ) FEEDBACK IN A WIRELESS COMMUNICATION NETWORK - A method and device for communicating ARQ feedback in wireless communication networks. An ARQ block whose transmission is in progress is determined upon occurrence of an event at a receiving device. ARQ feedback is generated that indicates the ARQ blocks whose transmission is in progress. Further, the ARQ feedback is sent to a device transmitting the ARQ feedback. | 06-30-2011 |
20110161768 | APPARATUS AND METHOD FOR GENERATING MAC PROTOCOL DATA UNIT IN WIRELESS COMMUNICATION SYSTEM - An apparatus and a method for transmitting an Automatic Repeat reQuest (ARQ) block in a wireless communication system are provided. The method for transmitting the ARQ block includes when transmitting the ARQ block to a receiving stage in a Not Sent state, transitioning to an Outstanding state to wait to receive one of an ACK and a NACK for the ARQ block, when receiving the NACK for the ARQ block from the receiving stage in the Outstanding state, transitioning to a Waiting for Retransmission state, when determining to retransmit the ARQ block for the NACK by splitting the ARQ block into at least two ARQ sub-blocks in the Waiting for Retransmission state, transitioning to a Rearrangement state, retransmitting the ARQ block for the NACK by splitting the ARQ block into at least two ARQ sub-blocks in the Rearrangement state, and when receiving an ACK for every ARQ sub-block having the same ARQ Sequence Number (SN) in the Rearrangement state, transitioning to a Done state and finishing transmission of the ARQ block having the ARQ SN. | 06-30-2011 |
20110268031 | SYSTEM AND METHOD OF ENCODING AND DECODING CONTROL INFORMATION IN A MEDIUM ACCESS CONTROL PROTOCOL DATA UNIT - Methods and apparatuses are provided for transmitting and receiving a MAC PDU. The MAC PDU including a MAC header, an extended header group and a payload is generated. The MAC PDU is transmitted to a receiving device. The extended header group includes a first field that indicates whether at least one extended header is included in the extended header group, and a second field that indicates a length of the extended header group. | 11-03-2011 |
20110268057 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING CONTROL INFORMATION IN A WIRELESS COMMUNICATION SYSTEM - A method and apparatus for transmitting and receiving control information in a wireless communication system are provided. The apparatus includes a DownLink/UpLink (DL/UL) indicator for indicating whether a connection associated with control information to be transmitted is a DL connection or a UL connection and a flow Identification (ID) that identifies the connection are generated and control information including the DL/UL indicator and the flow ID is transmitted to another party to the connection. | 11-03-2011 |
20120002604 | SYSTEM AND METHOD FOR SWITCHING MOBILE STATION IDENTIFICATION IN WIRELESS COMMUNICATION SYSTEM - A system and a method for switching mobile station identification information in a wireless communication system are provided. A method for transmitting mobile station identification information includes, when a base station receives a RaNGing (RNG)-REQuest (REQ) message from the mobile station, sending, at a base station, a RNG-ReSPonse (RSP) message including a temporary mobile station identifier to the mobile station, determining, at the mobile station, the temporary mobile station identifier in the RNG-RSP signal, when base station receives REGistration (REG)-REQ message including the temporary mobile station identifier from the mobile station, sending, at the base station, a REG-RSP message comprising a mobile station identifier of the mobile station to the mobile station, determining, at the mobile station, the mobile station identifier in the REG-RSP message and sending a response signal for the REG-RSP message to the base station, when receiving the response signal for the REG-RSP message, deleting, at the base station, the temporary mobile station identifier of the mobile station, and communicating, at the mobile station and the base station, using the mobile station identifier. | 01-05-2012 |
20120029721 | METHOD AND APPARATUS FOR CONTROLLING ENERGY SUPPLY - A method and apparatus for controlling energy supply to energy consuming devices are provided. The method includes acquiring a first amount of energy to be used in at least one energy consuming device, determining the amount of energy stored in an energy storage, and optionally transmitting an energy supply request message to an energy supplier based on the amount of energy to be consumed in an energy consuming device and the amount of stored energy. | 02-02-2012 |
20120099418 | APPARATUS AND METHOD FOR HANDLING NETWORK LOSS IN A WIRELESS COMMUNICATION SYSTEM - An apparatus and method for handling network loss in a wireless access system includes determining whether network loss has occurred or not and, if a Mobile Station (MS) attempts an entry in which the network loss has occurred, transmitting one of a first message including information associated with prohibiting new entry and a second message including information associated with informing that a supported service is restricted. | 04-26-2012 |
20120099492 | APPARATUS AND METHOD FOR PERFORMING UPLINK COMMUNICATION BY MEANS OF RELAY STATION IN WIRELESS COMMUNICATION SYSTEM - An apparatus and method for performing Uplink (UL) communication by a Relay Station (RS) in a wireless communication system are provided. The RS receives a Transmit/receive Transition Gap (TTG) and a Receive/transmit Transition Gap (RTG) of a Base Station (BS) during a network entry process of the RS, receives, from the BS, an idle time R_IdleTime between frames used in the RS, and determines a structure of a UL frame. In the alternative, the RS determines a time interval Tad or an idle time R_IdleTime according to a predetermined scheme, and transmits the Tad or the R_IdleTime to the BS. The proposed apparatus and method reduce an overhead of a frame structure when the RS transitions from a transmission mode to a reception mode or from a reception mode to a transmission mode, the frame structure being for frames of the BS and it adjacent RS, thereby reducing interference. | 04-26-2012 |
20120225650 | METHOD AND APPARATUS FOR CONTROLLING RELAY STATION MODE OF MOBILE STATION IN A COMMUNICATION SYSTEM - A method and an apparatus for a Mobile Station (MS) to control a Relay Station (RS) mode of the MS in a communication system are provided. The method includes sensing a link loss with a serving Base Station (BS), searching for a neighbor BS for network reentry, transmitting to the neighbor BS an Identifier (ID) of the serving BS and an indication indicating network reentry from coverage loss caused by movement out of a service area of the serving BS are, and operating in the RS mode, upon receipt of an indication commanding switch to the RS mode from the neighbor BS, wherein the RS mode is a mode in which the MS operates as an RS. | 09-06-2012 |
20120225655 | APPARATUS AND METHOD FOR CONTROLLING RELAY MODE OF BASE STATION IN COMMUNICATION SYSTEM - An apparatus and a method for providing a relay service in a Base Station (BS) of a communication system are provided. The method includes detecting a communication state with a backhaul of the communication system, transmitting backhaul error occurrence information to at least one Mobile Station (MS) located in a service coverage area when communication with the backhaul is interrupted, selecting a neighbor BS from among one or more neighbor BSs as a target BS, and providing a relay service by connecting with the target BS. | 09-06-2012 |
20120269114 | APPARATUS AND METHOD FOR TRANSMITTING FRAME INFORMATION IN MULTI-HOP RELAY BROADBAND WIRELESS ACCESS COMMUNICATION SYSTEM - An upper node is provided for use in a wireless communication system using a relay scheme. The upper node includes means for transmitting, upon a request of a lower relay station for an initial connection of the lower relay station, downlink section information for communication with the lower relay station for a relay service to the lower relay station; and means for transmitting, after the initial connection with the lower relay station, frame configuration information for communication with the lower relay station for a relay service to the lower relay station through the downlink section. The downlink section information includes configuration information of the downlink section for communication with the lower relay station for a relay service. | 10-25-2012 |
20120314719 | METHOD AND SYSTEM OF TRANSMITTING AND RECEIVING FRAGMENTABLE DATA UNITS IN A WIRELESS COMMUNICATION ENVIRONMENT - The present invention provides a method and system for transmitting and receiving Fragmentable Data Units (FDUs) in a wireless communication environment. In one embodiment, a method of transmitting FDUs in a wireless communication environment includes fragmenting a FDU into a fixed number of fragments by a transmitting device. The method further includes packing the fragments of said FDU in payloads of Medium Access Control (MAC) Protocol Data Units (PDUs). Additionally, the method includes encoding control information of each fragment of said FDU in a fragmentation control (FC) field and a sequence number field of the respective MAC PDU. Moreover, the method includes transmitting the MAC PDUs containing the fragments of said FDU and control information associated with the fragments to a receiving device. | 12-13-2012 |
20130017836 | APPARATUS AND METHOD FOR BEAM LOCKING IN A WIRELESS COMMUNICATION SYSTEMAANM Chang; Young-BinAACI Anyang-siAACO KRAAGP Chang; Young-Bin Anyang-si KRAANM Taori; RakeshAACI Suwon-siAACO KRAAGP Taori; Rakesh Suwon-si KR - According to one embodiment, an apparatus for beamforming includes a detector for measuring at least one change of movement and rotation of an apparatus; and a calculator for determining a beamforming parameter for aligning a beam direction with another apparatus by compensating for the change of the beam direction according to at least one of the movement and the rotation. | 01-17-2013 |
20130040682 | APPARATUS AND METHOD FOR BEAM LOCKING IN WIRELESS COMMUNICATION SYSTEM - To retain a beam direction of beamforming in a wireless communication system, an apparatus for the beamforming includes a detector for measuring change of at least one of a movement and a motion of the apparatus; and a processor for determining a beam control parameter for aligning a beam direction with a counterpart apparatus by compensating for the change of the beam direction according to at least one of the movement and the motion. | 02-14-2013 |
20130051350 | APPARATUS AND METHOD FOR GENERATING MAC PROTOCOL DATA UNIT IN WIRELESS COMMUNICATION SYSTEM - An apparatus and method for generating a Media Access Control (MAC) Protocol Data Unit (MPDU) in a wireless communication system are provided. The method includes reconstructing at least one MAC Service Data Unit (MSDU) according to scheduling information of the MAC layer and generating at least one MAC Protocol Data Unit (MPDU) data portion, adding control information to each MPDU data portion and generating at least one MPDU payload, the control information comprising MSDU information constituting each MPDU data portion, adding a General MAC Header (GMH) to each MPDU payload and generating at least one MPDU, the GMH including length information on the MPDU and Connection IDentifier (CID) information, and transmitting the MPDU to a receive end. | 02-28-2013 |
20130107850 | METHODS AND DEVICES FOR PERFORMING AN AUTOMATIC REPEAT REQUEST RESET IN A WIRELESS COMMUNICATION ENVIRONMENT | 05-02-2013 |
20130178219 | METHOD AND APPARATUS FOR PROVIDING COMMUNICATION SERVICE TO MOBILE STATION BY MULTIPLE BASE STATIONS IN COOPERATION IN WIRELESS COMMUNICATION SYSTEM - A method and an apparatus for providing a service to a Mobile Station (MS) by a plurality of Base Stations (BSs) operating in cooperation in a wireless communication system are provided. The method includes configuring, by a master BS, a first cooperative cell including at least one slave BS, sending a resource request message for requesting resource allocation to the at least one slave BS included in the first cooperative cell, receiving, from each of the at least one slave BS, a resource request response message including resource approval control results for the resource allocation request, changing member BSs constituting the first cooperative cell based on the resource request response message, and allocating resources to an MS that is served in the first cooperative cell. | 07-11-2013 |
20130188575 | METHOD AND APPARATUS FOR PERFORMING HYBRID AUTOMATIC REPEAT REQUEST OPERATION IN A COMMUNICATION SYSTEM - A Hybrid Automatic Repeat reQuest (HARQ) method and an apparatus in a communication system are provided. The method includes receiving, by a Subscriber Station (SS), first data from at least one first member Base Station (BS) among member BSs of a cooperative cell, when the cooperative cell is configured with the member BSs to provide a communication service to the SS, generating a response signal indicating a reception result of the first data, and transmitting the response signal to at least one predefined second member BS from among the member BSs. The member BSs include a master BS for controlling communication of the member BSs and at least one slave BS for communicating with the SS under the control of the master BS. | 07-25-2013 |
20130229307 | APPARATUS AND METHOD FOR CONTROLLING ADAPTIVE BEAMFORMING GAIN IN WIRELESS COMMUNICATION SYSTEM - An apparatus and a method for controlling a beamforming gain in a wireless communication system are provided. The method includes determining whether to control a beamforming gain, controlling the beamforming gain via change of a beam width if it is determined to control the beamforming gain, and transmitting or receiving a signal according to the controlled beamforming gain. | 09-05-2013 |
20130250973 | METHOD AND SYSTEM FOR ENCODING AND DECODING LENGTH OF MEDIUM ACCESS CONTROL PROTOCOL DATA UNIT - A method and system for encoding the length of a Medium Access Control (MAC) Protocol Data Unit (PDU) is provided. The method includes partitioning the length of the MAC PDU into a first part and a second part when the length of the MAC PDU is greater than a first predefined value, encoding the first part in a first header of the MAC PDU, encoding the second part in a second header of the MAC PDU, encoding the length of the MAC PDU in a first header of the MAC PDU when the length of the MAC PDU is less than or equal to first predefined value, and transmitting the MAC PDU with the encoded length of the MAC PDU to a receiving communication device. In another embodiment, the invention includes a method and apparatus for decoding an encoded length of a MAC PDU. | 09-26-2013 |
20130279348 | APPARATUS AND METHOD FOR GENERATING ARQ FEEDBACK MESSAGE IN WIRELESS COMMUNICATION SYSTEM - An apparatus and a method for generating an Automatic Repeat reQuest (ARQ) feedback message in a wireless communication system are provided. The method includes generating first feedback information of at least one ARQ block, determining whether any ARQ blocks include at least one successfully received ARQ sub-block, when the at least one erroneous ARQ block includes at least one successfully received ARQ sub-block, adding second feedback information of the ARQ sub-blocks to the first feedback information of the ARQ blocks using a field indicating whether the second feedback information is added and a field indicating the erroneous ARQ blocks including the at least one successfully received ARQ sub-block, and sending the first feedback information with the second feedback information added, to the transmitting stage. | 10-24-2013 |
20130279416 | APPARATUS AND METHOD FOR AUTOMATIC REPEAT REQUEST (ARQ) FEEDBACK IN WIRELESS COMMUNICATION SYSTEM - An apparatus and a method for Automatic Repeat reQuest (ARQ) feedback in a wireless communication system are provided. A method for the ARQ feedback at a receiving end includes when receiving an ARQ block from the transmitting end, checking for error in the ARQ block, when the ARQ block has no error, initializing and driving a timer used for determining whether to perform the ARQ feedback according to reception of a next ARQ block, when receiving the next ARQ block without error before the timer expires, initializing and driving the timer, and when the timer expires, performing the ARQ feedback in relation to at least one ARQ block received without error. | 10-24-2013 |
20130288683 | SYSTEM AND METHOD FOR TRANSMITTING AND RECEIVING A SIGNAL USING MULTIPLE FEQUENCY BANDS IN A WIRELESS COMMUNICATION SYSTEM - Disclosed is a system and a method of signal transmission/reception by a mobile station in a wireless communication system. The method includes: transmitting a first sub-band preparation indicator, which indicates that the mobile station has been prepared for transmission/reception of a signal through a first sub-band, to a base station through a primary band; transmitting a first sub-band failure indicator to the base station through the primary band upon detecting failure in transmitting the first sub-band preparation indicator; receiving sub-band information on a second sub-band, which is different from the first sub-band, from the BS through the primary band; and acquiring synchronization with the second sub-band, so as to enable transmission/reception of a signal through the second sub-band based on the sub-band information. | 10-31-2013 |
20140023040 | APPARATUS AND METHOD FOR SCHEDULING DATA IN CLOUD CELL COMMUNICATION SYSTEM - A method for scheduling data by a new master Base Station (BS) in a cloud cell communication system is provided. The method includes detecting that a master BS for a specific Mobile Station (MS) is changed from an old master BS to a new master BS, before a tunnel which is established between the new master BS and an access gateway is activated, receiving MS data which the old master BS receives through the tunnel which is established between the old master BS and the access gateway and buffers from the old master BS, and scheduling the received MS data. | 01-23-2014 |
20140036766 | METHOD AND SYSTEM FOR GENERATING AND PROCESSING MEDIUM ACCESS CONTROL PACKET DATA UNITS IN A BROADBAND WIRELESS NETWORK ENVIRONMENT - The present invention provides a method and system for generating and processing medium access control (MAC) protocol data units (PDUs) in a broadband wireless network environment. In one embodiment, a method includes determining whether a MAC service data units (SDUs) intended for a receiving device includes fragmented MAC SDU(s). The method also includes generating MAC PDU(s) from the fragmented MAC SDU(s) when the MAC SDUs includes fragmented MAC SDU(s), where each MAC PDU includes a single fragmented MAC SDU. The method further includes determining whether unfragmented MAC SDU(s) in the MAC SDUs satisfy pre-defined criteria. If the unfragmented MAC SDU(s) satisfy the predefined criteria, the method includes generating MAC PDU(s) from the unfragmented MAC SDU(s), where each MAC PDU includes multiple unfragmented MAC SDUs. Otherwise, the method includes generating MAC PDU(s) from the unfragmented MAC SDU(s), where each MAC PDU includes a single unfragmented MAC SDU. | 02-06-2014 |
20140044065 | METHOD AND APPARATUS OF BEARER GROUPING FOR DATA TRANSMISSION IN A BROADBAND WIRELESS NETWORK - A method for grouping bearers for data transmission by a Base Station (BS) in a wireless communication network are provided. The method includes sending a bearer request to a data gateway, and receiving a bearer response from the data gateway with parameters associated with grouping of the bearers. | 02-13-2014 |
20140064216 | METHOD AND APPARATUS FOR COMMUNICATING DOWNLINK CONTROL INFORMATION IN AN ASYMMETRIC MULTICARRIER COMMUNICATION NETWORK ENVIRONMENT - A method for communicating Downlink Control Information (DCI) in an asymmetric multicarrier communication network environment, the method comprising: determining a carrier type corresponding to DCI to be transmitted to a mobile station from a plurality of carrier types, encoding the DCI in a DCI format, wherein the DCI format comprises a set of fields corresponding to the determined carrier type, and transmitting the DCI encoded in the DCI format to the mobile station through a downlink control channel on a primary carrier, wherein the DCI format comprises a carrier index field indicating type of the fields in the DCI format encoding the DCI and the carrier type corresponding to the encoded DCI. | 03-06-2014 |
20140071943 | APPARATUS AND METHOD FOR PROVIDING COOPERATIVE COMMUNICATION SERVICE BETWEEN MACRO BASE STATION AND SMALL CELL BASE STATION IN MOBILE COMMUNICATION SYSTEM - A method for providing a cooperative communication service by a macro Base Station (BS) in a mobile communication system is provided. The method includes generating at least one small cell BS group by grouping small cell BSs if there are small cell BSs of which a number is equal to or larger than a threshold small cell BS number within a service coverage of the macro BS, establishing a cooperative interface with a representative small cell BS among small cell BSs included in the at least one small cell BS group, and providing a cooperative communication service with the at least one small cell BS group using the cooperative interface. | 03-13-2014 |
20140112228 | METHOD AND APPARATUS FOR REDUCING POWER CONSUMPTION OF BASE STATION IN RADIO COMMUNICATION SYSTEM - A method for reducing power consumption of a macro Base Station (BS) in a radio communication system is provided. The method includes transmitting a preamble through at least one mini BS installed within a service coverage area of the macro BS, and transmitting a power-off command to the at least one mini BS after being switched into a power-on state, upon reception of access request information through the at least one mini BS from a terminal that received the preamble. | 04-24-2014 |
20140146834 | METHOD AND SYSTEM FOR DYNAMICALLY CHANGING UPPER BOUND ON DATA PACKET SIZE IN WIRELESS COMMUNICATION NETWORKS - The present invention provides a method and system for dynamically changing upper bound on size of data packets. In one embodiment, a transmitting device determines a need to change existing negotiated maximum size for an active connection when size of data packets for an application is switched, a new application is mapped to the active connection or Maximum Transmission Unit (MTU) of broadband wireless network is changed. Then, the transmitting device sends a request message indicating a new negotiated maximum size for changing the existing negotiated maximum size to the receiving device. The receiving device sends a response message confirming change to the new negotiated maximum size to the transmitting device. Accordingly, the transmitting device and the receiving device uses the new negotiated maximum size for building data packets and decoding the received data packets respectively based on a predefined parameter (e.g., sequence number/action time) indicated in the request/response message. | 05-29-2014 |
20140192741 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING CONTROL INFORMATION IN A WIRELESS COMMUNICATION SYSTEM - A method in a wireless communication system is provided. The method includes generating a message including an indicator indicating whether a connection to perform Automatic Repeat reQuest reset is a downlink connection or an uplink connection and transmitting the message. | 07-10-2014 |
20140269517 | SYSTEM AND METHOD FOR SWITCHING MOBILE STATION IDENTIFICATION IN WIRELESS COMMUNICATION SYSTEM - A system and a method for switching mobile station identification information in a wireless communication system are provided. A method for transmitting mobile station identification information includes, when a base station receives a RaNGing (RNG)-REQuest (REQ) message from the mobile station, sending, at a base station, a RNG-ReSPonse (RSP) message including a temporary mobile station identifier to the mobile station, determining, at the mobile station, the temporary mobile station identifier in the RNG-RSP signal, when base station receives REGistration (REG)-REQ message including the temporary mobile station identifier from the mobile station, sending, at the base station, a REG-RSP message comprising a mobile station identifier of the mobile station to the mobile station, determining, at the mobile station, the mobile station identifier in the REG-RSP message and sending a response signal for the REG-RSP message to the base station, when receiving the response signal for the REG-RSP message, deleting, at the base station, the temporary mobile station identifier of the mobile station, and communicating, at the mobile station and the base station, using the mobile station identifier. | 09-18-2014 |
20140307657 | DEVICE AND METHOD FOR PERFORMING DEVICE TO DEVICE COMMUNICATION IN WIRELESS COMMUNICATION SYSTEM - A device and a method for performing Device to Device (D2D) communication in a wireless communication system are provided. The method includes transmitting information on a self-frequency band selected from all frequency bands for the D2D communication, to the second mobile station, receiving information on a counterpart-frequency band selected for the D2D communication, from the second mobile station, determining transmission and reception frequency bands to be used for the D2D communication, based on the information on the self-frequency band and the information on the counterpart-frequency band, transmitting data to the second mobile station in the determined transmission frequency band, and receiving data from the second mobile station in the determined reception frequency band. | 10-16-2014 |
20140308946 | LOGICAL ADDRESS ASSIGNMENT IN A CLOUD CELL - A method and system for assigning a unique logical address in a cloud cell having a mobile station, slave base stations and a master base station are provided. The method includes determining at least one unassigned logical address from respective address spaces associated with the slave base stations and the master base station in the cloud cell by the master base station, selecting the unique logical address from the at least one unassigned logical address determined from the respective address spaces associated with the plurality of base stations, and assigning the selected unique logical address to the mobile station in the cloud cell. The mobile station and each of the plurality of base stations communicate in the cloud cell using the assigned unique logical address. | 10-16-2014 |
20140317314 | METHOD AND APPARATUS FOR ASSIGNING A LOGICAL ADDRESS IN A COMMUNICATION SYSTEM - A method and a system for assigning a unique logical address to a mobile station in a cloud cell are provided. The method includes selecting, by the master base station, a unique logical address from an associated set of addresses, wherein the set of addresses is a subset of a common address space, and assigning the unique logical address to the mobile station so that the mobile station and each of the plurality of base stations communicate in the cloud cell using the assigned unique logical address. | 10-23-2014 |
20140321438 | METHOD AND APPARATUS FOR SYNCHRONIZATION FOR DEVICE-TO-DEVICE COMMUNICATION IN UNLICENSED FREQUENCY BANDS - A method and an apparatus for synchronization for Device-to-Device (D2D) communication in unlicensed frequency bands are provided. The method includes determining whether a signal is detected during a preset time period within a synchronization period, after transmitting a synchronization signal during the synchronization period for the D2D communication, when it is determined that the D2D communication is to be performed, and starting the time period for the D2D communication and performing the D2D communication during the time period for the D2D communication, when it is determined that the signal is not detected. | 10-30-2014 |
20140328267 | STRUCTURE OF MOBILE TERMINAL OPERATING IN A MOBILE COMMUNICATION SYSTEM SUPPORTING DEVICE TO DEVICE COMMUNICATION AND OPERATION METHOD THEREFOR - A mobile terminal in a mobile communication system supporting device to device (D2D) communication, and a method for operating the mobile terminal are provided. The terminal includes a first radio frequency (RF) chain configured to transmit a mobile communication signal and a second RF chain configured to receive a mobile communication signal, for mobile communication with a base station, a switching unit including a plurality of switches configured to establish transmission and reception paths in the first and second RF chains, and a controller configured to control switching of the switching unit to establish transmission and reception paths of a D2D communication signal for D2D communication by combining a part of the first RF chain with a part of the second RF chain. The combination of the parts of the first and second RF chains is different according to a D2D communication frequency band. | 11-06-2014 |
20140341112 | SYSTEM AND METHOD FOR IP SESSION CONTINUITY IN DEVICE-TO-DEVICE COMMUNICATION SYSTEM - A method for performing, by a User Equipment (UE), Device-to-Device (D2D) communication using a wireless communication network is provided. The method includes performing D2D communication via a direct communication path using an allocated Internet Protocol (IP) address, establishing a first Evolved Packet System (EPS) bearer supporting D2D communication via the wireless communication network, to a Packet Data Network (PDN) Gateway (P-GW), determining to switch from the direct communication path to D2D communication via the wireless communication network, and communicating an IP packet through the first EPS bearer based on the determination. An IP packet transmitted through the first EPS bearer may not be transmitted to a packet data network, or an IP packet received through the first EPS bearer is not received from the packet data network. | 11-20-2014 |
20140341121 | METHOD AND APPARATUS FOR COMMUNICATION BETWEEN USER EQUIPMENTS IN WIRELESS COMMUNICATION SYSTEM - A method and an apparatus for direct communication between User Equipments (UEs) in a wireless communication system are provided. A method for communicating with a second UE by a first UE in the wireless communication system includes generating a discovery code used for communicating with the second UE, and transmitting the generated discovery code to one middle layer among a plurality of layers. | 11-20-2014 |
20140341132 | SCHEME FOR DISCOVERY IN A COMMUNICATION NETWORK - A method for performing discovery at a terminal in a communication system is provided. The method includes generating a discovery request message including discovery target information, transmitting the discovery request message to a Proximity Service (ProSe) server that is located in a core network of the communication system and that manages communication of the terminal, and receiving a result of a discovery operation from another entity that performs the discovery operation of the terminal using discovery identification information about the terminal. The other entity is selected based on the discovery target information by the ProSe server. | 11-20-2014 |
20140344578 | METHOD AND APPARATUS FOR PERFORMING DISCOVERY FOR DEVICE-TO-DEVICE COMMUNICATION - A discovery method for Device-to-Device (D2D) communication is provided. A terminal transmits a discovery service request message for D2D communication including one of application information and group information for a Proximity based Service (ProSe) to a server. The terminal receives, from the server, a discovery service key delivery message including a discovery service key corresponding to the one of the application information and the group information for a ProSe. The terminal acquires the discovery service key by decrypting the discovery service key delivery message, and performs discovery by encrypting a discovery code with the acquired discovery service key. | 11-20-2014 |
20140376458 | METHOD AND APPARATUS FOR ALLOCATING RESOURCES FOR D2D COMMUNICATION - A method for allocating resources for Device-to-Device (D2D) communication in a transmitting terminal is provided. The method includes receiving broadcast resource allocation information for the D2D communication from a Base Station (BS), and measuring a channel quality of a downlink signal received from the BS and, if the measured channel quality is smaller than a predetermined threshold, conducting the D2D communication using the resource allocation information. | 12-25-2014 |