公开(公告)号：US12068901B2

公开(公告)日：2024-08-20

申请号：US17514996

申请日：2021-10-29

Applicant: QUALCOMM Incorporated

Inventor： Jing Jiang ,  Peter Gaal ,  John Edward Smee ,  Pushkar Bajirao Kulkarni ,  Hari Sankar ,  Sanghoon Kim ,  Seyong Park

IPC: H04L27/26 ,  H04W72/04 ,  H04W72/044

CPC classification number: H04L27/2614 ,  H04W72/044

Abstract: Methods, systems, and devices for wireless communications are described. In some systems, a transmitting device may perform a pre-distortion of a signal on a resource allocation for the signal and using discrete Fourier transform (DFT)-domain processing. For example, the transmitting device may perform a first frequency-domain (FD) to time-domain (TD) transform, which may be an example of an inverse DFT (IDFT), on a first set of FD symbols to obtain a first set of TD samples. A size of the first FD to TD transform may be based on the resource allocation for the signal. The transmitting device may perform a crest factor reduction (CFR) function on the first set of TD samples to pre-distort the signal in the TD (e.g., in the IDFT domain), which may enable the transmitting device to avoid out-of-band (OOB) emission or otherwise have greater control over where the pre-distortion contributes energy.

公开(公告)号：US12057937B2

公开(公告)日：2024-08-06

申请号：US17593902

申请日：2019-04-15

Applicant: QUALCOMM Incorporated

Inventor： Liangming Wu ,  Changlong Xu ,  Jian Li ,  Jing Jiang ,  Wei Yang ,  Ying Wang

IPC: H04L1/00

CPC classification number: H04L1/0057 ,  H04L1/005

Abstract: Certain aspects of the present disclosure generally relate to wireless communications and, more particularly, to methods and apparatus for adjusting a number of encoded bits, M, in block puncturing and/or shortening calculations to improve encoding performance. An exemplary method that may be performed by a wireless device generally includes iteratively determining a parameter, Madj, for construction of a polar code of size N for use in encoding K information bits, based on: at least two parameters, α and β, related to how many iterations to use in determining Madj, and a number of encoded bits, M; performing information adjustment allocation of the K information bits to an upper part and a lower part of the polar code based on Madj; and transmitting the upper part and the lower part of the polar code via a wireless medium.

公开(公告)号：US20240214249A1

公开(公告)日：2024-06-27

申请号：US18145008

申请日：2022-12-21

Applicant: QUALCOMM Incorporated

Inventor： Vinayak Suresh ,  Seyedkianoush Hosseini ,  Jing Jiang

IPC: H04L27/148 ,  H04L27/26

CPC classification number: H04L27/148 ,  H04L27/2605 ,  H04L27/2636

Abstract: Methods, systems, and devices for wireless communications are described. Techniques described herein provide for formulating single carrier waveforms into an orthogonal frequency-division multiple access (OFDMA) framework. To fit into the cyclic prefix OFDM (CP-OFDM) grid, a frequency domain fast Fourier transform (FFT) may be applied to the single carrier waveform, a bandwidth expansion and spectrum shaping may be applied to the output of the FFT and inverse FFT (IFFT) processing may be applied to the output of the bandwidth expansion and spectrum shaping. The output of the IFFT may then be represented in an OFDM compatible manner.

公开(公告)号：US12016038B2

公开(公告)日：2024-06-18

申请号：US17645002

申请日：2021-12-17

Applicant: QUALCOMM INCORPORATED

Inventor： Seyedkianoush Hosseini ,  Gabi Sarkis ,  Wei Yang ,  Chih-Ping Li ,  Heechoon Lee ,  Jing Jiang ,  Peter Gaal ,  Wanshi Chen ,  Linhai He ,  Joseph Binamira Soriaga

IPC: H04W72/23 ,  H04W28/12 ,  H04W72/1268 ,  H04W72/51 ,  H04W72/566

CPC classification number: H04W72/23 ,  H04W28/12 ,  H04W72/1268 ,  H04W72/51 ,  H04W72/569

Abstract: Methods, systems, and devices for wireless communications are described that provide for service indication via downlink control information (DCI) in which different services have a same DCI size. Techniques provide also that a DCI format may be indicated by a masking operation on a cyclic redundancy check (CRC) of the DCI. The DCI may include an indicator field that may indicate the service of the associated operation. The indication may also be provided via different monitoring occasions of the DCI transmissions that are associated with different services. Different DCI search spaces also may be associated with different services and provide the service indication. Additionally or alternatively, different scrambling sequences used on all or a portion of control information or demodulation reference signal transmissions may be associated with different services.

公开(公告)号：US11956079B2

公开(公告)日：2024-04-09

申请号：US17929942

申请日：2022-09-06

Applicant: QUALCOMM Incorporated

Inventor： Changlong Xu ,  Chao Wei ,  Jing Jiang ,  Jilei Hou ,  Yang Yang ,  Gabi Sarkis

IPC: H04L1/00 ,  H04L1/08

CPC classification number: H04L1/0067 ,  H04L1/0041 ,  H04L1/0057 ,  H04L1/08

Abstract: Aspects of the disclosure relate to rate-matching a stream of bits encoded using polar codes. An exemplary method generally includes determining a mother code size (N) for transmitting an encoded stream of bits based, at least in part, on a minimum supported code rate for transmitting the encoded stream of bits (Rmin), a control information size of the encoded stream of bits (K), a number of coded bits for transmission (E), and a maximum mother code size (Nmax), encoding a stream of bits using a polar code of size (N, K) and storing the encoded stream of bits in a circular buffer, and performing rate-matching on the stored encoded stream of bits based, at least in part, on a comparison among the mother code size (N), the control information size of the encoded stream of bits (K), and the number of coded bits for transmission (E).

公开(公告)号：US11950241B2

公开(公告)日：2024-04-02

申请号：US16544604

申请日：2019-08-19

Applicant: QUALCOMM Incorporated

Inventor： Krishna Kiran Mukkavilli ,  Tingfang Ji ,  Naga Bhushan ,  Joseph Binamira Soriaga ,  Peter Gaal ,  John Edward Smee ,  Jing Jiang

IPC: H04W72/23 ,  H04L1/00 ,  H04L1/1607 ,  H04L1/1829 ,  H04L5/00 ,  H04L5/14 ,  H04W72/0446 ,  H04W76/00

CPC classification number: H04W72/23 ,  H04L1/00 ,  H04L1/1671 ,  H04L1/1854 ,  H04L5/0044 ,  H04L5/0055 ,  H04L5/1469 ,  H04W72/0446 ,  H04W76/00 ,  H04L5/0048

Abstract: Aspects of the present disclosure provide a self-contained subframe structure for time division duplex (TDD) carriers. Information transmitted on a TDD carrier may be grouped into subframes, and each subframe can provide communications in both directions (e.g., uplink and downlink) to enable such communications without needing further information in another subframe. In one aspect of the disclosure, a single subframe may include scheduling information, data transmission corresponding to the scheduling information, and acknowledgment packets corresponding to the data transmission. Furthermore, the subframe may additionally include a header and/or a trailer to provide certain bi-directional communications functions.

公开(公告)号：US11943771B2

公开(公告)日：2024-03-26

申请号：US18165320

申请日：2023-02-06

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Jing Jiang ,  Hao Xu

IPC: H04W72/04 ,  H04W16/14 ,  H04W72/20 ,  H04W72/566 ,  H04W16/32 ,  H04W72/044 ,  H04W72/0446 ,  H04W72/0453

CPC classification number: H04W72/20 ,  H04W16/14 ,  H04W72/569 ,  H04W16/32 ,  H04W72/0446 ,  H04W72/0453 ,  H04W72/0473

Abstract: Certain aspects of the present disclosure provide techniques for determination, selection, configuration, and/or indication of resource allocation patterns for scheduling services, such as reliable low-latency services (e.g., ultra-reliable low latency communications (URLLC)) and other services in a wireless network, such as new radio (NR) (e.g., a 5G network). A method of wireless communication by a user equipment (UE) is provided. The method generally includes determining a resource allocation pattern that defines resources, from a plurality of configured resource allocation patterns, wherein at least one of the plurality of configured resource allocation patterns comprises a plurality of resource elements with at least a first resource element associated with a first resource allocation restriction and at least a second resource element associated with a second resource allocation restriction and communicating based on the determined resource allocation pattern.

公开(公告)号：US20240056271A1

公开(公告)日：2024-02-15

申请号：US17886413

申请日：2022-08-11

Applicant: QUALCOMM Incorporated

Inventor： Danlu Zhang ,  Jing Jiang ,  Jun Ma ,  Seyedkianoush Hosseini ,  Wei Yang ,  Gabi Sarkis ,  Peter Gaal ,  John Edward Smee

IPC: H04L5/00 ,  H04L27/26

CPC classification number: H04L5/0094 ,  H04L5/0076 ,  H04L5/0092 ,  H04L5/0007 ,  H04L5/0064 ,  H04L27/2634

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive an indication of a set of frequency domain resources allocated to the UE for communicating data over a wireless channel. The UE may receive an indication of a waveform type associated with the set of frequency domain resources. The waveform type may be based at least in part on a data type of the data, may be used for a defined amount of time, and may be one of a plurality of waveform types that are multiplexed together over different frequency domain resources within a total system bandwidth. The UE may communicate within the set of frequency domain resources according to the indicated waveform type and the data type.

公开(公告)号：US20240031208A1

公开(公告)日：2024-01-25

申请号：US17872984

申请日：2022-07-25

Applicant: QUALCOMM Incorporated

Inventor： Jing Jiang ,  Jing Sun ,  Seyedkianoush Hosseini ,  Zhifei Fan ,  Yu Zhang

IPC: H04L27/26 ,  H04L5/00 ,  H04W72/04

CPC classification number: H04L27/26025 ,  H04L27/265 ,  H04L5/005 ,  H04W72/0453

Abstract: Methods, systems, and devices for wireless communications are described. A wireless device allocated two sets of non-contiguous frequency domain resources may divide a set of modulation symbols associated with a codeword into two subsets of modulation symbols. The wireless device may map the two subsets of modulation symbols into two sets of pre-discrete Fourier transform (DFT) resource elements (REs). The wireless device may pad the pre-DFT REs according to a block based scheme or a comb based scheme. The wireless device may perform a first DFT on the first set of pre-DFT REs and a second DFT on the second set of pre-DFT REs to generate first and second sets of frequency domain samples. The wireless device may perform an inverse fast Fourier transform on the first and second sets of frequency domain samples to generate a time domain waveform that may have a low peak to average power ratio.

公开(公告)号：US20240014928A1

公开(公告)日：2024-01-11

申请号：US18157991

申请日：2023-01-23

Applicant: QUALCOMM Incorporated

Inventor： Jing Lei ,  Wei Yang ,  Jing Jiang ,  Yongle Wu

IPC: H04L1/00 ,  H03M13/15

CPC classification number: H04L1/0041 ,  H04L1/0057 ,  H03M13/151

Abstract: Methods, systems, and devices for wireless communication are described. A wireless device may generate a coded pseudorandom using an encoder that implements error detection and/or error correction techniques. A bit sequence of information bits may be segmented into a plurality of bit groups, and each bit group may be mapped to a respective symbol to generate a plurality of ordered information symbols. The plurality of ordered information symbols may be encoded (e.g., by the encoder) to generate a plurality of codewords. Each codeword may be demapped to generate a plurality of sequences that are multiplexed to generate the pseudorandom sequence. A signal that is generated based on the pseudorandom sequence may be transmitted by the wireless device. In some examples, the wireless device may generate a reference signal based on orthogonal or pseudo-orthogonal random sequences generated by applying an orthogonal cover code to a pseudorandom sequence.