摘要:
A broadband wireless communication system is provided. A sending apparatus in the broadband wireless communication system includes a controller for distributing packets to a plurality of processors to transmit the packets in a multi-Frequency Allocation (FA) access mode; the plurality of the processors for processing the packet provided from the controller in a Media Access Control (MAC) layer; and a plurality of senders for encoding the packets provided from the corresponding processors in a physical layer and transmitting a signal generated through the physical layer encoding.
摘要:
An apparatus and method for supporting different frame structures in a broadband wireless communication system are provided. A communication method of a Base Station (BS) includes determining a frame structure to be provided. A MAP message including an indicator that indicates a new standard is generated, when the provided frame structure conforms to the new standard. The generated MAP message is transmitted by performing physical layer encoding thereon. Accordingly, signaling is defined to report a currently provided frame structure to an MS, and thus, a system can support different frame structures.
摘要:
An uplink scheduling apparatus and method in a communication system are provided. In the uplink scheduling method, a scheduling metric is calculated for each Mobile Station (MS). An MS with a high priority level is selected according to the calculated scheduling metric. The number of subchannels and a product of a modulation order and coding rate (MPR) are extracted according to input variables for the selected MS. The number of subchannels to be allocated to the selected MS is determined according to the MPR and the subchannels are allocated to the selected MS. The scheduling metric is updated for the each MS.
摘要:
Provided is an apparatus and method for allocating radio resources in a broadband wireless communication system by adaptively grouping the radio resources. In the method, the amount of resources necessary for a transmission of data to a user terminal and the amount of the remaining allocable resources are detected. A resource allocation scheme is selected in consideration of the amount of resources necessary for the transmission of the data to the user terminal and the amount of the remaining resources. A group index of radio resources for the user terminal is determined according to the selected resource allocation scheme. Radio resources corresponding to the determined group index are allocated to the user terminal.
摘要:
An apparatus and method for dynamic channel allocation in a multiple channel wireless communication system are provided. The apparatus includes a scheduler for dividing resources to be used for a band Adaptive Modulation and Coding (AMC) channel and a diversity channel, a generator for generating a MAP heading field including physical distribution information on the band AMC channel and the diversity channel, and a mapper for mapping the MAP heading field to a predetermined physical resource region.
摘要:
An apparatus and method for Hybrid Automatic Repeat reQuest (HARQ) signaling in a broadband wireless communication system are provided. A communication method of a Base Station (BS) includes transmitting a Fixed Allocation (FA) message containing bitmap index information for all Mobile Stations (MSs) allocated with fixed resources; and transmitting bitmap information indicating whether packets to be transmitted to the MSs are Retransmission (Rtx) packets or new packets. Accordingly, when HARQ is carried out using a fixed resource allocation scheme, a bitmap is used to indicate whether HARQ packets transmitted in a current frame are new packets or Rtx packets. Therefore, a receiving end can be prevented from incorrectly decoding the packets.
摘要:
A method for transmitting and receiving signals using multiple frequency band in a wireless communication system are provided, in which a BS determines whether an MS is to use a plurality of FAs, selects the plurality of FAs if it is determined that the MS is to use the plurality of FAs, transmits FA information about the selected FAs to the MS, and transmits and receives signals to and from the MS in the selected FAs.
摘要:
Provided is an apparatus and method for varying the length of an error check code of a PDU according to the length of a payload in a broadband wireless communication system. A transmitting apparatus includes a first generator and a second generator. The first generator generates a payload of a PDU. The second generator selects the length of an error check code according to the length of the generated payload, generates an error check code according to the selected length, and suffixes the error check code to the payload.
摘要:
A method and system for transmitting/receiving a signal in a wireless communication system are provided, in which an mobile station determines a sequence number of a first protocol data unit being a last received protocol data unit, transmits the SN of the first protocol data unit to a serving base station, and allocates a virtual SDU sequence number to a service data unit including a second protocol data unit following the first protocol data unit.
摘要:
A method for performing a handover by a subscriber station (SS) in a broadband wireless communication system including a serving base station (BS) communicating with the SS, and at least one neighbor BS neighboring the serving BS. The SS receives downlink signals from the serving BS and the neighbor BS; measures an arrival time difference between the downlink signal received from the serving BS and the downlink signal received from the neighbor BS; and transmits the measured arrival time difference to the serving BS.