摘要:
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.
摘要:
A method and an apparatus of requiring uplink resources for transmitting a ranging request message in a communication system are provided. The method includes allocating an uplink bandwidth from a base station, and fragmentizing a Ranging Request (RNG-REQ) message into plural fragmented RNG-REQ messages, when the allocated bandwidth does not accommodate an entire RNG-REQ message, requesting an additional uplink bandwidth by transmitting one fragmented RNG-REQ message, and allocating an requested additional uplink bandwidth from the base station and transmitting a next one fragmented RNG-REQ message.
摘要:
An apparatus and method for negotiating sleep cycle setting between a base station and a mobile station in a wireless communication system are provided. A method for operating a transmitter to negotiate sleep cycle setting of a mobile station in a wireless communication system includes transmitting a DSx request message including sleep cycle setting information to a receiver, and receiving a DSx response message, which includes at least one of acceptance/refusal information about DSx and acceptance/refusal information about sleep cycle setting change, from the receiver. Herein, the DSx is one of a Dynamic Service Addition (DSA), a Dynamic Service Change (DSC), and a Dynamic Service Deletion (DSD).
摘要:
A handover method of a Mobile Station (MS) and a wireless mobile communication system are provided. The handover method includes sending a handover request message to a Serving Base Station (BS), receiving a handover response message including handover Target BS information and an entire Cipher-based Message Authentication Code (CMAC) value corresponding to a first number of bits, from the Serving BS in response to the handover request message, storing a partial CMAC value corresponding to a second number of Most Significant Bit (MSB) bits in the entire CMAC value, sending to the Serving BS a handover indication message including the entire CMAC value and information on a Target BS to which the MS has determined to handover, selecting a ranging code using the partial CMAC value, and sending the selected ranging code to the Target BS.
摘要:
An apparatus in a Base station (BS) and an apparatus in a Mobile Station (MS) are provided for allocating and requesting, respectively, uplink resources in a wireless communication system. The apparatus in the MS includes a transmitter for sending, to a base station, a predetermined Channel Quality Information CHannel (CQICH) codeword over a pre-allocated CQICH in a silence period, when an uplink bandwidth for an extended real-time Polling Service (ertPS) is not allocated to the mobile station, to inform the base station that the mobile station has data to send; and a receiver for receiving, from the base station, information related to an uplink bandwidth supporting a maximum rate allocated by the base station, in response to the CQICH codeword
摘要:
A method and apparatus for controlling a sleep mode operation of a Mobile Station (MS) in a communication system, in which the sleep mode operates according to a sleep cycle including a listening window corresponding to an awake mode and a sleep window corresponding to a sleep state. The method includes starting a preset timer if there is a transmission of data between the MS and a Base Station (BS) during the listening window, restarting the timer upon receiving at least one of UpLink (UL) data, DownLink (DL) data and MAP Information Element (IE) indicating resource allocation from the BS during the listening window, maintaining the listening window until the timer expires, and transitioning to the sleep window if the timer expires.
摘要:
Provided is a method for receiving a notification indicating a completion of a network re-entry procedure by a Base Station (BS) in a communication system. The method includes transmitting, to a Mobile Station (MS), a RaNGing ReSPonse (RNG-RSP) message including information indicating whether to omit any of processes or transmission of messages for performing a network re-entry procedure with the BS; and receiving, from the MS, a notification indicating the completion of the network re-entry procedure.
摘要:
A system for transmitting/receiving resource allocation information in a wireless mobile communication system is provided. A transmission apparatus allocates a data burst in a frame, the data burst including a two-dimensional region of a time domain and a frequency domain, and transmits resource allocation information on the allocated data burst. A reception apparatus receives the resource allocation information from the transmission apparatus, and detects a region of the frame where the data burst is allocated, using the received resource allocation information. The resource allocation information includes information on a start point and an end point of the data burst. The start point indicates a point which is spaced apart from an start point of the frame by a first offset value in the time domain, and is spaced apart from the start point of the frame by a second offset value in the frequency domain. The end point indicates a point which is spaced apart from the start point by a third offset value in the time domain, and is spaced apart from the start point by a fourth offset value in the frequency domain. The data burst is a two-dimensional rectangular region having a diagonal line segment connecting the start point to the end point.
摘要:
Methods and apparatus are provided for performing a handover by a serving base station in a communication system. A handover request message is received from a mobile station. A first handover response message is transmitted to the mobile station. The first handover response message includes a list of at least one neighbor base station. A handover indication message including a value of a handover indication type field is received. The value is determined by the mobile station from among at least two values individually indicating at least one of a handover cancel and the handover rejection. The value representing the handover cancel indicates that the mobile station intends to cancel a handover procedure, and the value representing the handover rejection indicates that the mobile station intends to reject performing handover with any of the at least one neighbor base stations in the list.
摘要:
An apparatus and a method for allocating a dedicated access zone to a Relay Station (RS) in a multihop relay Broadband Wireless Access (BWA) communication system are provided. A communicating method of the RS includes relaying communications between a Base Station (BS) and a Mobile Station (MS), determining whether a dedicated resource is necessary for the communications with the MS, when the dedicated resource is necessary, generating a dedicated access zone request message which comprises necessary bandwidth information and transmitting the dedicated access zone request message to the BS.