If one CRC is attached to a large-size information block, even a small number of bit errors generated in the information block, size of which is increased, causes an error in all bits. One subburst configures split-subbursts to support multiple HARQ processes. The information block is segmented into a plurality of transport blocks and a HARQ process may be performed with respect to each transport block. In a HARQ scheme, a receiver basically attempts to correct errors of received data and determines whether to retransmit data using an error detection code. To map data in a physical layer to a physical subcarrier, two steps are generally needed. Method and apparatus for transmitting and receiving duplicate data in a multicarrier wireless communication system. As illustrated in FIG. The subburst information may vary according whether a HARQ mode or a multiple-input multiple-output MIMO mode is supported or according to a channel encoding scheme. The transmitter uses IFFT to combine multiple subcarriers and the receiver uses corresponding FFT to separate the multiple subcarriers. The method may further include receiving a NACK signal for a specific split-information block from a receiving side, when the receiving side fails to receive the specific split-information block.
Since the WiMAX mesh mode MAC is connectionless based, it cannot be used to The data subframe is divided into mini-slots, which carry data from/to SSs. To same up your mac Min Ultimate Hardware Handbook MIL 87&KK MAC MINI >> Mac mini Plugotomy Before hoisting out the subframe, find the little battery.
19 is a view illustrating a method for applying multiple CRCs by allocating a plurality of mini-subbursts within one subframe according to an exemplary.
In the frame structure illustrated in FIG. One ACK channel may be allocated to each of the split-subbursts.
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Although the FEC scheme is advantageous in that a time delay is small and no additional information transmitted and received between transmitting and receiving stages is necessary, system efficiency in good channel environments is lowered. The UCD describes an uplink burst profile.
A transmitter performs IFFT upon data and then transmits the data. In the drawings: FIG.
we have proposed a MAC frame structure that consists of two subframes: A.
Two types of aggregation deﬁned by the n standard, aggregate MAC service . control to enable error control over the aggregated subframes and mini. Frames and Subframes Downlink and uplink transmissions Ts = 10 ms duration, Different TTI durations can be defined by the MAC sublayer when using a different number of symbols (e.g.
corresponding to a mini-slot, one slot or.
When transmitting data using a short subframe, a submap within each subframe may be used as resource mapping indication signaling.
Even if a large-size information block is received from an upper layer, a physical layer configures transport blocks of a proper size and attaches an individual CRC to each transport block.
The information block is segmented into a plurality of transport blocks and a HARQ process may be performed with respect to each transport block. Since a CRC is attached to each transport block, retransmission is performed only for an error-detected transport block and thus the burden of retransmitting the entire information block is reduced.
A frame is a data sequence during a fixed time used by a physical specification.
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|Upon receipt of the NACK signal, the transmitter transmits proper retransmission data according to a HARQ mode chase combining or incremental redundancy.
Namely, subframe 2 and subframe 3 are integrated so that only one control channel is allocated, and burst 2 transmitted through subframe 2 and subframe 3 and burst 1 transmitted only through subframe 3 are all transmitted through Sub MAP SF 23.
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After standardization for IEEE The following detailed description includes specific details in order to provide a thorough understanding of the present invention. An apparatus operating in a wireless communication system, the apparatus comprising: an RF radio frequency module; and.
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control to enable error control over the aggregated subframes and mini- mize the. Mini spares have a wide range of classic Mini body, subframes available in stock to order online. splitting the MAC PDU based on a subframe size in a PHY (physical) layer, the . multiple CRCs by allocating a plurality of mini-subbursts within one subframe.
In the exemplary embodiment of the present invention, a multiple HARQ technique is proposed to solve the above-described additional HARQ latency problem.
Upon receiving the NACK signal, the transmitter can retransmit data. The preamble is used for initial synchronization between a base station and a user equipment, cell search, frequency offset, and channel estimation.
To map data in a physical layer to a physical subcarrier, two steps are generally needed. If no error is detected in received data, a receiver transmits an acknowledgement ACK signal as a response signal to inform a transmitter that data has been successively received.
Each subburst, and split-subbursts belonging to a subburst are allocated in units of a slot. However, a CID may be allocated to an individual transport block.
VRIDHA MEANING OF NAME
|When an information block corresponding to one CID is split into a plurality of mini-subbursts for transmission, an efficient resource mapping method is specified.
Pilots are allocated to edges of each tile. One or more cells may exist in the base station In each group, a pilot is allocated to each cluster with a fixed location.
Year of fee payment : 4. The splitting an information block may be performed in a physical layer of a transmitting side, and the predetermined size may correspond to a subframe size.