Abstract: Techniques and examples of hybrid automatic repeat request (HARQ) buffer size design for communication systems are described. A user equipment (UE) communicates with a serving cell of a wireless network using a HARQ mechanism, with the communicating involving: (a) determining, by the processor, a respective size of each buffer of a plurality of buffers corresponding to a plurality of HARQ processes on a per-HARQ process basis; and (b) storing, by the processor, respective information in each buffer of the plurality of buffers for a corresponding HARQ process among the plurality of HARQ processes.

Abstract: Aspects of the disclosure provide a method and device performing input bit allocation that includes receiving broadcasting information bits, generating timing related bits for the broadcasting information bits, and selecting a portion of the generated timing related bits. The method and device can further include allocating each of the selected timing related bits to selected input bits of an encoder, so that each of the selected timing related bits is allocated to an input bit of the encoder corresponding to an available bit channel of the encoder where the selected inputs bits of the encoder correspond to encoded bits that are located in a front portion of the encoded bits.

Abstract: In an aspect of the disclosure, a method, a computer-readable medium, and wireless equipment are provided. The wireless equipment obtains an integer E and an integer N. E encoded bits are to be selected for transmission from N encoded bits output from an encoder. The wireless equipment determines F inputs from N inputs of the encoder based on E and N. The F inputs do not include S inputs that correspond to S outputs of the encoder generating encoded bits not to be transmitted. The wireless equipment sets the F inputs to a predetermined value.

Abstract: In an aspect of the disclosure, a method, a computer-readable medium, and wireless equipment are provided. The wireless equipment interleaves a first sequence of encoded bits output from an encoder and then manipulating the interleaved first sequence of encoded bits to generate a second sequence of encoded bits. The wireless equipment places the second sequence of encoded bits in a buffer. The wireless equipment selects, from the buffer, a first section of the second sequence of encoded bits for transmission. The wireless equipment interleaves the first section of encoded bits. The wireless equipment transmits the interleaved first section of encoded bits via one or more symbols.

Abstract: Apparatus and methods are provided for polar code sub-block interleaving and bit selection. In one novel aspect, middle-part interlaced sub-block interleaving is provided for polar code interleaving. In one embodiment, the middle part of the polar code is interlaced and generates the interleaved polar code. In another embodiment, the lower part and the upper part are also sub-block interleaved with the middle-part interlaced method. In another novel, rate-dependent unified bit selection is provided. The bit selection is categorized into three operation categories of repetition, puncturing and the shortening. Each category follows unified bit selection rule with different categories differ only in the access scheme. In one embodiment, the circular buffer is used for bit selection.

Abstract: In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may be a base station. The base station generates a plurality of sets of bits representing downlink control information directed to a plurality of UEs. The each set of bits of the plurality of sets of bits includes a number of information bits and a number of protection bits. The base station also combines the plurality of sets of bits to generate combined bits. The base station further encodes the combined bits to generate encoded bits. The base station subsequently transmits the encoded bits.

Abstract: A method of new radio physical broadcast channel (NR-PBCH) bit mapping is proposed to improve for NR-PBCH decoding performance under Polar codes. NR-PBCH carries 32 information bits and 24 CRC bits. Specifically, NR-PBCH uses 512-bit Polar codes to carry total 56 data bits. Different Polar code bit channels have different channel reliability. As a general rule, the most reliable Polar code bit channels are used for the 56 data bits. In accordance with a novel aspect, within the 32 NR-PBCH information bits, some of the information bits that can be known to the decoders under certain conditions and therefore are placed at the least reliable Polar code bit positions. As a result, by mapping the NR-PBCH data bits properly at the input bit positions of Polar codes, the NR-PBCH decoding performance is improved when the known bits a priori can be exploited.

Abstract: A signal processing device for communication is provided and includes a de-rate matching module, a decoder, a signal-quality generation module, and a first control module. The de-rate matching module performs a de-rate matching operation on the control signal to obtain a de-rate matching signal. The decoder performs a decoding operation on the de-rate matching signal to obtain a decoding signal. The signal-quality generation module generates at least one signal-quality indicator according to the control signal and the de-rate matching signal. The at least one signal-quality indicator includes a similarity indictor which is obtained by the signal-quality generation module performing a similarity calculation operation on the control signal and the de-rate matching signal. The first control module determines and controls whether to stop the decoding operation for the de-rate matching signal of the current control signal according to the at least one signal-quality indicator.

Abstract: Aspects of the disclosure provide polar code rate matching methods. A first method can include determining whether to puncture or shorten a mother polar code according to a mother code rate and/or a rate matched code rate, and selecting K positions in the sequence of N input bits for input of K information bits to a polar encoder according to an offline prepared index list ordered according to the reliabilities of respective synthesized channels. Frozen input bits caused by puncturing or shortening are skipped during the selection. A second method includes generating a mother polar code, rearranging code bits of the mother polar code to form a rearranged sequence that can be stored in a circular buffer, and performing, in a unified way, one of puncturing, shortening, or repetition on the rearranged sequence to obtain a rate matched code.

Abstract: A signal processing device for communication is provided and includes a de-rate matching module, a decoder, a signal-quality generation module, and a first control module. The de-rate matching module performs a de-rate matching operation on the control signal to obtain a de-rate matching signal. The decoder performs a decoding operation on the de-rate matching signal to obtain a decoding signal. The signal-quality generation module generates at least one signal-quality indicator according to the control signal and the de-rate matching signal. The at least one signal-quality indicator includes a similarity indictor which is obtained by the signal-quality generation module performing a similarity calculation operation on the control signal and the de-rate matching signal. The first control module determines and controls whether to stop the decoding operation for the de-rate matching signal of the current control signal according to the at least one signal-quality indicator.