Hong Kong Applied Science and Technology Research Institute Company, Limited

Yunxiang Yao

Man Wai Kwan

Kong Chau Tsang

Xiangyu Liu

Yaming Luo

Yiu Wing Edwin Chan

Ying Lun Tsui

Shuaimin Jiang

Described is a method and device for detecting a discontinuous transmission (DTX) state or a partial DTX state at an uplink control information (UCI) receiver in a wireless communication system. The method comprises receiving a linear block encoded signal on an uplink (UL) at said UCI receiver and processing said signal after resource element (RE) demapping to obtain a soft bit sequence. The soft bit sequence is then transformed into multiple sub-sequences. Correlation metrics are determined for two or more of the multiple sub-sequences or two or more sub-sequence groups derived from the multiple sub-sequences or sequence segments derived from the sub-sequence groups. Then, a determination is made if a DTX state has occurred by evaluating the determined correlation metrics.

Method and device for detecting partial discontinuous transmission (DTX) using soft bits correlation

Described is a method and device for detecting a discontinuous transmission state (DTX) at an uplink control information (UCI) receiver device in a wireless communication system. The method involves receiving a linear block encoded signal on an uplink (UL) at said UCI receiver device and processing the received linear block encoded signal after resource element (RE) dernapping to obtain channel estimation data. The method includes determining from said channel estimation data a DTX metric for one or more selected resource blocks (RBs) and determining if a DTX state has occurred by comparing the determined DTX metric to a calculated, selected, or predetermined threshold.

Method and device for detecting partial discontinuous transmission (DTX) using channel estimation data

Described is a method of processing a signal received at an uplink control information (UCI) receiver in a wireless communication system. The method comprises processing a signal received on an uplink (UL) at said UCI receiver to transform said received signal into a likelihood calculation of possible transmitted codewords (&#x3b8;. . . &#x3b8;i . . . &#x3b8;) and determining a maximum magnitude &#x3b8;value from said likelihood calculation. The method includes comparing said maximum magnitude &#x3b8;value to a selected, calculated or predetermined scaled threshold S&#xb7;&#x3c4; where &#x3c4; is a threshold and S is a scaling factor for the threshold &#x3c4;. The comparison step is such that, where |&#x3b8;|&#x3e;S&#xb7;&#x3c4;, the method comprises determining that the signal received comprises a linear block encoded signal. In the method, prior to said comparison step, the scaling factor S is selected from a plurality of scaling factor options. One scaling factor option (i) is a scaling factor Sderived from a combination of estimated noise and/or signal power at an output of a resource element (RE) demapper module and an estimated channel response from/before an equalizer module of said UCI receiver. The options also include using a combination of Sand a suitable scaling factor derived excluding option (i).

Method and device for detecting discontinuous transmission (DTX) assisted by noise estimation

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Hong Kong, China

Yunxiang Yao