摘要:
A handover method of a mobile station in a wireless mobile communication system and a system therefore are provided. The mobile station transmits a handover indication message to a serving base station, receives a ranging response message that comprises authentication information required for the mobile station to authenticate a target base station, receives fast ranging resources and transmits a ranging response acknowledgement (ACK) message, which comprises authentication information required for the target base station to authenticate the mobile station, to the target base station after receiving the fast ranging resources. Accordingly, a handover break time is minimized.
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:
An apparatus and method for configuring a Relay-Frame Control Header (R-FCH) transmitted in an intermediary link area in a multi-hop relay Broadband Wireless Access (BWA) communication system are provided. The method includes determining a modulation scheme of a Relay Station (RS) Downlink (DL)-MAP (or simply referred to as R-MAP) in consideration of a channel state with the RS while an initial network entry process is performed by the RS or while communicating with the RS in a Base Station (BS)-RS area where communication is made with RSs connected to the BS and transmitting a message including the determined modulation scheme to the RS. Accordingly, a Modulation and Coding Scheme (MCS) on the R-MAP can be dynamically changed according to a channel state between an RS and a BS, thereby enabling effective use of resources.
摘要:
An apparatus and a method for ranging in a distributed antenna system are provided. A method for an operation of a Mobile Station (MS) in a distributed antenna system includes obtaining per-group ranging code configuration information indicating a ranging code allocation for each antenna port group, determining an antenna port group that the MS belongs to, and performing a ranging procedure by one of a plurality of ranging codes allocated to the antenna port group that the MS belongs to.
摘要:
Methods for operating a Base Station (BS) and a User Equipment (UE) in a wireless communication system using a primary frequency and one or more secondary frequencies, and apparatuses for the BS and UE for carry out the methods, are provided. The method for operating the BS includes determining whether to activate or deactivate at least one of the one or more secondary frequencies, and transmitting a message comprising a bitmap indicating the activation or deactivation of the at least one of the one or more secondary frequencies to the UE. The method for operating the US includes receiving a message comprising a bitmap indicating activation or deactivation of at least one of the one or more secondary frequencies from the BS, and activating or deactivating the at least one of the one or more secondary frequencies based on the received message.
摘要:
A method for operating a base station for Multicast Broadcast Services (MBS) in a wireless communication system that uses a multi-carrier is provided. In the method, MBS capability exchange is performed on a terminal using a primary carrier. A first message for configuring at least one MBS service flow is received from the terminal. A second message is transmitted to the terminal in response to the first message. The second message includes switching information between the primary carrier and a secondary carrier. MBS data is transmitted using the secondary carrier.
摘要:
A method and apparatus for network reentry of a Mobile Station (MS) in a wireless communication system are provided. The method includes receiving allocation of a context search identifier from a network while a network entry procedure is performed, and transmitting a ranging request message including the allocated context search identifier to a Base Station (BS) when a network reentry event occurs.
摘要:
An apparatus and method for supporting simultaneous transmission of a plurality of broadcast management messages in a wireless communication system are provided. A method in a Base Station (BS) for supporting transmission of a broadcast management message in a wireless communication system includes generating one or more broadcast management messages whose transmission is required, and constructing an Advanced-MAP Information Element (A-MAP IE) of a number, which is predefined on the basis of a predefined position within a subframe, as a Broadcast A-MAP IE. Here, the Broadcast A-MAP IE comprises allocation information of a broadcast burst for transmission of the generated one or more broadcast management messages.
摘要:
A method for requesting allocation of a Channel Quality Information Channel (CQICH) by a Mobile Station (MS) in a communication system. The method includes switching, by the MS, from a serving anchor Base Station (BS) to a target anchor BS, detecting an absence of a CQICH allocated from the target anchor BS, and transmitting, from the MS to the target anchor BS, a CQICH allocation request. The CQICH allocation request includes a CQICH allocation request header including a basic Connection IDentifier (CID) of the MS and a Header Check Sequence (HCS) for the CQICH allocation request header.
摘要:
A system and method for updating a sleep identifier (SLPID) of a mobile station (MS) in a broadband wireless access (BWA) communication system having a sleep mode in which there is no transmission data and an awake mode in which there is transmission data. Upon recognizing a need to update an SLPID allocated to an MS in the sleep mode in the initial phase of the sleep mode, a base station (BS) reallocates a new SLPID to be allocated to the MS and transmits SLPID update information to the MS. Upon receiving the SLPID update information for its current SLPID during the sleep mode, the MS updates its current SLPID with the reallocated SLPID according to the received update information.