A system and method of auto-detection of WLAN packets includes selecting a first Golay sequence from a first pair of Golay complementary sequences associated with first packet type, each Golay sequence of the first pair of Golay complementary sequences being zero correlation zone (ZCZ) sequences with each Golay sequence of a second pair of Golay complementary sequences associated with a second packet type, and transmitting a wireless packet carrying a short training field (STF) that includes one or more instances of the first Golay sequence.

A transmission apparatus includes a transmission signal generator which, in operation, generates a transmission signal having an aggregate physical layer protocol data unit (PPDU) that includes a legacy preamble, a legacy header, a non-legacy preamble, a plurality of non-legacy headers and a plurality of data fields; and a transmitter which, in operation, transmits the generated transmission signal, wherein the legacy preamble, the legacy header and the plurality of non-legacy headers are transmitted using a standard bandwidth, the non-legacy preamble and the plurality of data fields are transmitted using a variable bandwidth that is larger than the standard bandwidth and wherein a plurality of sets of each of the plurality of non-legacy headers and each of the plurality of data fields are transmitted sequentially in a time domain.

A method and an apparatus in a multiple-input multiple-output (MIMO) wireless communication system are provided. A signal is received over a channel. The channel is decomposed into a plurality of virtual channels. Symbol detection is performed on each of the plurality of virtual channels using respective symbol detectors. At least one of the symbol detectors has a lower rank than that of the channel. Output from the symbol detectors is combined to obtain final log likelihood ration (LLR) values for layers of the channel. Decoding is performed using the final LLR values to output a decoded symbol value of the received signal.

The present invention relates to providing control information within a search space for blind decoding in a multi-carrier communication system. In particular, the control information is carried within a sub-frame of the communication system, the sub-frame including a plurality of control channel elements. The control channel elements may be aggregated into candidates for blind decoding. The number of control channel elements in a candidate is called aggregation level. In accordance with the present invention, the candidates of lower aggregation levels are localized, meaning that the control channel elements of one candidate are located adjacently to each other in the frequency domain. Some candidates of the higher aggregation level(s) are distributed in the frequency.

Media access control MAC payloads corresponding to a plurality of receiving devices are encapsulated in one MAC packet data unit (PDU), where the MAC PDU includes a header, the MAC payloads and identification information of each receiving device in the plurality of receiving devices; and the header includes a plurality of subheaders, the plurality of subheaders is subheaders respectively corresponding to a MAC payload corresponding to each receiving device, the MAC payload corresponding to each receiving device includes a MAC control element (CE) and/or a MAC service data unit (SDU), and the identification information is used for identifying each receiving device. In the foregoing solutions, transmission of a MAC PDU during multi-user cooperated communication is implemented.

A transmission device includes, a receiver that receives availability information of each of a plurality of first transmission paths, and a transmitter that divides data into a plurality of transmission blocks, groups the plurality of transmission blocks into a plurality of slices, each of the plurality of slices include a distinct subset of the plurality of transmission blocks, when the availability information indicates that each of the plurality of first transmission paths has an error occurrence below a threshold value, transmits a different one of the plurality of slices to each of the plurality of first transmission paths.

A method for a user equipment (UE) in a wireless communication system includes determining a coverage enhancement (CE) mode, wherein the CE mode is determined as one of a plurality of predetermined CE modes, wherein the plurality of predetermined CE modes comprise CE mode A and CE mode B; receiving downlink control information (DCI) related to scheduling a data channel, wherein a format of the DCI is related to the CE mode; and communicating the data channel based on the DCI. Further, determining the CE mode includes based on information related to indicating the CE mode being received, determining the CE mode as identical to the CE mode indicated based on the information.

A transmission apparatus includes a transmission signal generator which, in operation, generates a transmission signal having an aggregate physical layer protocol data unit (PPDU) that includes a legacy preamble, a legacy header, a non-legacy preamble, a plurality of non-legacy headers and a plurality of data fields; and a transmitter which, in operation, transmits the generated transmission signal, wherein the legacy preamble, the legacy header and the plurality of non-legacy headers are transmitted using a standard bandwidth, the non-legacy preamble and the plurality of data fields are transmitted using a variable bandwidth that is larger than the standard bandwidth and wherein a plurality of sets of each of the plurality of non-legacy headers and each of the plurality of data fields are transmitted sequentially in a time domain.

[Object] To provide a mechanism capable of improving the efficiency of wireless communication even in a case in which the sequence numbers of received data units are non-sequential. [Solution] A wireless communication device including: a processing unit that generates a protocol data unit (PDU) that has sequence information with which a sequence number of a data unit that is determined as being to be resent is specified; and a communication unit that transmits the PDU generated by the processing unit. A wireless communication device including: a communication unit that receives a protocol data unit (PDU) that has sequence information with which a sequence number of a data unit that is determined as being to be resent is specified; and an acquisition unit that acquires the sequence information from the PDU received by the communication unit.

The present invention relates to providing control information within a search space for blind decoding in a multi-carrier communication system. In particular, the control information is carried within a sub-frame of the communication system, the sub-frame including a plurality of control channel elements. The control channel elements may be aggregated into candidates for blind decoding. The number of control channel elements in a candidate is called aggregation level. In accordance with the present invention, the candidates of lower aggregation levels are localized, meaning that the control channel elements of one candidate are located adjacently to each other in the frequency domain. Some candidates of the higher aggregation level(s) are distributed in the frequency.