Abstract:
PURPOSE: An indoor terminal and outdoor terminal classification apparatus and method thereof are provided to confirm a location of a user who connects to a small base station including the restricted coverage. CONSTITUTION: An indoor distance calculation unit(712) calculates an indoor distance based on a small base station using path loss if a terminal locates in indoor. An outdoor distance calculation unit(713) calculates an outdoor distance based on the small base station using the path loss if the terminal locates in outdoor. A first determination unit(716) compares a service area with the indoor distance and the outdoor distance. The first determination unit determines whether the terminal locates in the indoor. [Reference numerals] (710) Control unit; (711) Path loss calculation unit; (712) Indoor distance calculation unit; (713) Outdoor distance calculation unit; (714) Distacne calculation unit between base stations; (716) First determination unit; (718) Second determination unit; (720) Communication unit
Abstract:
본 발명은 이동 통신 시스템에서의 프리앰블 할당 방법 및 임의 접속 방법에 관한 것이다. 본 발명에서는 특정 이동국들에게 임의 접속을 시작하기 전에 프리앰블 자원들 중에서 하나의 자원을 미리 할당한다. 이동국들은 미리 할당받은 프리앰블 자원을 토대로 하는 프리앰블을 기지국으로 전송하면서 임의 접속을 요청한다. 따라서 다른 이동국이 동일한 프리앰블을 전송함에 따라 발생되는 충돌을 방지할 수 있다. 프리앰블, 예약할당, 패킷, OFDM
Abstract:
PURPOSE: A wireless location measuring method and device thereof are provided to minimize a location measurement error under an NLOS(Non-Line of Sight) condition. CONSTITUTION: An electronic wave environment determining unit(220) determines the electronic wave delay tap of a signal transmitted from transmitters. A distance calculating unit(230) calculates a distance between each transmitter and each receiver. A distance correcting unit(240) calculates the final distance between each transmitter and each receiver using the electronic wave delay tap of each transmitter. A location estimating unit(250) estimates an area where circles which are remote as much as the final distance from each transmitter are overlapped as the location of a receiver.
Abstract:
A random access method is provided to prevent the HARQ acknowledgement channel collision generated because a base station does not distinguish a terminal using the same preamble when the terminal performs the random access procedure to the base station. A base station transmits a response message to a downlink control information and preamble to a mobile station(S102,S103). The mobile station transmits an access request message to the base station(S104). The base station transmits an HARQ acknowledgement message to the mobile station(S105), and then assigns an acknowledgement channel to the mobile station(106). The base station transmits the downlink control information and a connection establishment message to the mobile station(S107,S108). The mobile station transmits the HARQ acknowledgement message to the base station through the acknowledgement channel(S109).
Abstract:
A method for transmitting and receiving random access response information in a radio communication system, a base station device and a terminal unit thereof are provided to support the variable and flexible management for the wireless resources of a physical layer by configuring response information when utilizing or allocating radio resources. A terminal transmits a random access preamble to a base station(S101). When the base station detects the access preamble transmitted from the terminal, the base station transmits a response message including the sequence to the terminal(S103). The terminal transmits setup request information to the base station by using uplink radio resource allocation information(S105), and the base station transmits the response control information for the setup request information(S107).
Abstract:
A transmission method and a receiving method of control information capable of transmitting control information by using a control channel block while minimizing the consumption of the control channel block are provided to transmit the control information necessary between media access control layers of the mobile terminal and a base station in a packet based mobile communications system and to reduce consumption of the control channel block. A control channel block(CB) including control information for controlling a terminal and identifying information for classifying the control information transmitted to the terminal is configured. The comprised control channel block is coded by a channel and transmitted. The control channel block includes error correction code information. The terminal decodes the control channel block.
Abstract:
A paging information transmission method and a paging method in a mobile communication system are provided to transmit paging information to MSs(Mobile Stations) that does not maintain uplink synchronization to allow the MSs to perform paging based on the paging information. A BS(Base Station)(100) checks whether there is packet data or a control message to be transmitted to an MS(S100). When there is packet data or a control message, the BS checks whether the MS maintains uplink physical layer synchronization(S110). If the MS maintains the uplink physical layer synchronization, the BS configures radio resource allocation information for transmission of packet information by using an identifier of the MS(S120). The BS transmits the radio resource allocation information via a physical layer control channel and transmits a packet data block via downlink radio resource(S130). the MS searches whether the radio resource allocation information exists in a physical layer control channel(S140). If there is radio resource allocation information, the MS receives a packet data block transmitted by the BS(S150-S160). The MS generates HARQ(Hybrid Automatic Retransmit reQuest) response information and transmits it to the BS(S170,S180).
Abstract:
A power-saving operation method for UEs(User Equipments) in a cellular system is provided to effectively reduce the power consumption of a UE by controlling power-saving operation of the UE in an active state by using an indicator which indicates whether the power-saving operation is required. A node B sets up power-saving parameters according to the QoS of a packet service and transmits them to a UE together with system information which is transmitted through a broadcast channel(S311). If packet data are generated, the node B and the UE attempt associated services(S312). Then, the node B transits the UE to an active state(S313). The UE, entering into the active state, works in a transmission mode(S314). At this moment, the node B and the UE execute a session setup process through negotiations(S315). Then, the UE reports a preferring power-saving indicator value to the node B according to its power setup environment(S316). The node B determines a power-saving indicator value to be applied to the UE in consideration of the reported power-saving indicator value and its environment(S317). In case the power-saving indicator is set to "ON", the node B determines power-saving parameters through negotiations with the UE(S318). The UE transfers to a transmission stop mode, and executes the power-saving operation according to the determined power-saving parameters(S319).
Abstract:
본 발명은 프리앰블 기반의 대역폭 요청 방법에 관한 것이다. 본 발명에 따르면 프리앰블을 사용하여 대역폭을 요청하는 휴대 인터넷 시스템에서 이동 단말의 상태를 가장 최근의 환경에 따라 상태조절하도록 함으로써 보다 효율적으로 사용자 데이터의 전송이 가능하도록 한다. 또한, 본 발명에 따르면 프리앰블을 사용하여 대역폭 요청 시도를 하였을 때, 기지국이 해당 프리앰블을 전송한 단말을 식별하기 위한 정보를 그 단말에 대한 상태조절 정보와 함께 임시 커넥션 식별자로서 다음 번 해당 단말과의 데이터 전송시 단말을 구분하도록 한다. 프리앰블 기반, 무선 인터넷, 대역요청, 무작위접속시도