Huawei Technologies Co., Limited

Yaron Ben-Arie

Shimon Shilo

Doron Ezri

Genadiy Tsodik

Oded Redlich

Ezer Melzer

Ming Gan

Jian Yu

Leonid Epstein

Wei Lin

Nadav Basson

Chun Hang Lee

Mor Reich

A transmitting device for supporting Hybrid Automatic Repeat Request (HARQ) includes scrambling and encoding, in which the order of scrambling and encoding is changed compared to the conventional transmitter. Likewise, a receiving device for supporting HARQ includes descrambling and decoding, in which the order of descrambling and decoding is changed compared to the conventional receiver. In particular, the transmitting device is configured to encode at least one data unit using Forward Error Correction (FEC) coding, scramble the encoded data unit based on a scrambling seed, provide an indication of the scrambling seed that is separate from the scrambled and encoded data unit, and transmit the indication of the scrambling seed and then the scrambled and encoded data unit to the receiving device.

Device and method for supporting hybrid automatic repeat request (HARQ)

A communication transmitter retransmits a Medium Access Control (MAC) Protocol Data unit (MPDU) to a communication receiver over a communication channel using a Hybrid Automatic Repeat reQuest (HARQ) retransmission scheme. The MPDU includes a plurality of information bits. The communication transmitter includes a processor configured to determine the MPDU to be retransmitted based on a Block ACK frame received from the communication receiver, the Block ACK frame indicating previously correctly decoded MPDUs at the communication receiver, and to generate a bit sequence to be transmitted to the communication receiver, wherein the bit sequence comprises the plurality of information bits. The communication transmitter further comprises a communication interface configured to transmit the bit sequence to the communication receiver for retransmitting the MPDU to the communication receiver.

Communication transmitter for retransmitting medium access control (MAC) protocol data unit (MPDU)

The present disclosure relates to Hybrid Automatic Repeat Request (HARQ) in wireless communication technologies, particularly HARQ for IEEE 802.11, i.e. HARQ for Wi-Fi. One example transmitting device is configured to encapsulate a data unit in a container unit, and encode the container unit into a codeword set of one or more codewords. One example receiving device is configured to receive, from a transmitting device, at least one codeword set of one or more codewords, decode the codewords of the codeword set to obtain a container unit, and decapsulate the container unit to obtain a data unit. A bit-size of the container unit is equal to a bit-size of the codeword set in the transmitting device and the receiving device.

Devices and methods for supporting HARQ for Wi-Fi

A midamble indication method includes sending, by a first device, midamble indication information to a second device. A duration of a midamble indicated by the midamble indication information is greater than or equal to a threshold. The threshold is related to a processing capability of the second device. In a midamble receiving method, the second device receives the midamble according to the indication information.

Midamble indication and receiving methods and apparatuses

The invention relates to an apparatus for selecting candidates in a K-Best algorithm of a MIMO decoder. The K-Best algorithm uses a layered structure comprising a first layer and subsequent layers. In each subsequent layer 2candidates are selected by iteratively carrying out a selection step, wherein in the selection step the apparatus is configured to calculate and select at least two candidates having minimum distance values of a candidate group, and after each iteratively carried out selection step, the selected at least two candidates are sent to a further subsequent layer for iteratively generating a further candidate group of 2candidates in the further subsequent layer.

Apparatus and method for selecting candidates in a K-Best algorithm of a multiple input multiple output decoder

This application discloses midamble indication and receiving methods and apparatuses. In the method, a first device sends midamble indication information to a second device, where a duration of a midamble indicated by the midamble indication information is greater than or equal to a threshold, and the threshold is related to a processing capability of the second device; and the second device receives the midamble according to the indication information.

A device for determining a received signal as minimum values of a set of values, the device comprising a processor configured to: load a first set of values in a register; identify a maximum value of the first set of values and a minimum value of the first set of values; in the register, replace the maximum value by a value of a second set of values and simultaneously replace the minimum value by a new value, calculated based on the minimum value, to receive an updated first set of values; and repeat previous steps until all values of the updated first set of values are replaced by values of the second set of values.

Optimized architecture for a signal decoder

An apparatus for deriving a submatrix {tilde over (G)}is described. The apparatus for deriving a submatrix {tilde over (G)}is configured to select an N-elements-column and an N-elements-row of an N&#xd7;N-Matrix G or G. The apparatus for deriving a submatrix {tilde over (G)}is configured to rearrange the selected column to the rightest column and the selected row to the lowest row of G or Gso as to generate a N&#xd7;N-matrix Gor G. The apparatus for deriving a submatrix {tilde over (G)}is configured to calculate a submatrix {tilde over (G)}by wherein the parameters (N&#x2212;1)&#xd7;(N&#x2212;1)-submatrix A, b, d, c are obtained from the Gor the G; wherein 

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Hod Hasharon, Israel

Yaron Ben-Arie