Patents by Inventor Kelvin Kar-Kin Au
Kelvin Kar-Kin Au has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11963148Abstract: A notification regarding a transition of a User Equipment (UE) from a standby operating mode to an active operating mode is exchanged between a UE and a network element in a communication network. The notification could be an uplink notification that is transmitted by the UE to the network element in response to an operating mode transition criterion for the UE being met at the UE, or a downlink notification that is transmitted by the network element to the UE in response to an operating mode transition criterion for the UE being met at the network element. The UE transitions from the standby operating mode to the active operating mode in response to the operating mode transition criterion being satisfied. The transmitter of the notification, which could be the UE or the network element, could also perform grant-free transmission of data without first receiving a response to the notification.Type: GrantFiled: May 1, 2020Date of Patent: April 16, 2024Assignee: Huawei Technologies Co., Ltd.Inventors: Qinghai Zeng, Kelvin Kar Kin Au, Mohammadhadi Baligh, Jianglei Ma
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Patent number: 11936481Abstract: A method embodiment includes implementing, by a base station (BS), a grant-free uplink transmission scheme. The grant-free uplink transmission scheme defines a first contention transmission unit (CTU) access region in a time-frequency domain, defines a plurality of CTUs, defines a default CTU mapping scheme by mapping at least some of the plurality of CTUs to the first CTU access region, and defines a default user equipment (UE) mapping scheme by defining rules for mapping a plurality of UEs to the plurality of CTUs.Type: GrantFiled: May 13, 2021Date of Patent: March 19, 2024Assignee: Huawei Technologies Co., Ltd.Inventors: Kelvin Kar Kin Au, Hosein Nikopour, Petar Djukic, Zhihang Yi, Alireza Bayesteh, Jianglei Ma, Mohammadhadi Baligh, Liqing Zhang
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Patent number: 11888615Abstract: Methods and systems are provided for allocating resources including VoIP (voice over Internet Protocol) and Non-VoIP resources. In some embodiments, multiplexing schemes are provided for use with OFDMA (orthogonal frequency division multiplexing access) systems, for example for use in transmitting VoIP traffic. In some embodiments, various HARQ (Hybrid Automatic request) techniques are provided for use with OFDMA systems. In various embodiments, there are provided methods and systems for dealing with issues such as Handling non-full rate vocoder frames, VoIP packet jitter handling, VoIP capacity increasing schemes, persistent and non-persistent assignment of resources in OFDMA systems.Type: GrantFiled: April 29, 2019Date of Patent: January 30, 2024Assignee: Apple Inc.Inventors: Robert Novak, Hang Zhang, Sophie Vrzic, Mo-Han Fong, Kelvin Kar-Kin Au, Jianglei Ma, Peiying Zhu, Wen Tong
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Patent number: 11882570Abstract: A New Radio (NR) control signal that indicates one or more Long Term Evolution (LTE) network parameters may be transmitted to NR UEs to enable the NR UEs to identify which resources carry LTE signal(s). The NR UEs may then receive one or more NR downlink signals over remaining resources in a set of resources without processing those resources that carry LTE signal(s). The NR downlink signals may have a zero power level, or otherwise be blanked, over resources that carry the LTE signal(s).Type: GrantFiled: August 30, 2022Date of Patent: January 23, 2024Assignee: Huawei Technologies Co., Ltd.Inventors: Amine Maaref, Kelvin Kar Kin Au, Jianglei Ma
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Patent number: 11864243Abstract: A system and method includes implementing, by a base station (BS), a reliable ultra-low latency transmission mechanism in a grant-free uplink transmission scheme having defined therein contention transmission unit (CTU) access regions and a plurality of CTUs. Implementing the reliable ultra-low latency transmission mechanism includes defining a reliable ultra-low latency CTU (RULL-CTU) access region from a portion of the CTU access regions of the grant-free transmission scheme, defining an RULL-CTU mapping scheme by mapping at least a portion of plurality of CTUs to the RULL-CTU access region to define a plurality of RULL-CTUs, defining a reliable ultra-low latency user equipment (RULL-UE) mapping scheme by defining rules for mapping a plurality of RULL-UEs to the plurality of RULL-CTUs in an initial pattern for initial transmissions in a first transmission time interval (TTI), and a regrouped pattern for redundant transmissions in a second TTI subsequent to the first TTI.Type: GrantFiled: February 23, 2022Date of Patent: January 2, 2024Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Kelvin Kar Kin Au, Liqing Zhang, Jianglei Ma
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Publication number: 20230388772Abstract: Provisioning and communicating physical signals and channels in NR networks having a first subset of transmit and receive points that use a first cell ID and a second subset of transmit and receive points that use a second cell ID. Operations include transmitting from, and receiving from, a first transmit and receive point a first signal or channel wherein the first signal or channel is based on a first user equipment (UE) specific parameter assigned via the first subset of transmit and receive points and transmitting from, and receiving from, the first transmit and receive point the plurality of transmit and receive points a second signal or channel wherein the second signal or channel is based on a second UE specific parameter assigned via the second subset of transmit and receive points. A transmit and receive point and a UE for implementing the operations are also disclosed.Type: ApplicationFiled: June 8, 2023Publication date: November 30, 2023Inventors: Amine Maaref, Kelvin Kar Kin Au, Jianglei Ma
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Patent number: 11799607Abstract: A method and system for operating a user equipment (UE) wherein a first set of radio access procedures are supported when the UE is in a first operating state, and a second set of radio access procedures are supported when the UE is in a second operating state.Type: GrantFiled: June 17, 2021Date of Patent: October 24, 2023Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Kelvin Kar Kin Au, Liqing Zhang, Mohammadhadi Baligh, Jianglei Ma, Wen Tong
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Patent number: 11711684Abstract: Provisioning and communicating physical signals and channels in NR networks having a first subset of transmit and receive points that use a first cell ID and a second subset of transmit and receive points that use a second cell ID. Operations include transmitting from, and receiving from, a first transmit and receive point a first signal or channel wherein the first signal or channel is based on a first user equipment (UE) specific parameter assigned via the first subset of transmit and receive points and transmitting from, and receiving from, the first transmit and receive point the plurality of transmit and receive points a second signal or channel wherein the second signal or channel is based on a second UE specific parameter assigned via the second subset of transmit and receive points. A transmit and receive point and a UE for implementing the operations are also disclosed.Type: GrantFiled: July 9, 2021Date of Patent: July 25, 2023Assignee: Huawei Technologies Co., Ltd.Inventors: Amine Maaref, Kelvin Kar Kin Au, Jianglei Ma
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Patent number: 11690060Abstract: Methods of bandwidth utilization are provided. Within a scheduling bandwidth, which may be an entire carrier bandwidth or a sub-band, scheduling is used to reserve a guard zone at the edge of the scheduled bandwidth. This can be based on the frequency localization capabilities of a transmitter that is to be scheduled. The guard zone may be defined to a resolution that is the same as the scheduling resolution in which case the guard zone is defined entirely through scheduling. Alternatively, the guard zone may be defined to a resolution smaller than the scheduling resolution in which case scheduling and further signaling may be employed to define the guard zone.Type: GrantFiled: February 23, 2021Date of Patent: June 27, 2023Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Liqing Zhang, Jianglei Ma, Kelvin Kar Kin Au, Wen Tong
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Patent number: 11659563Abstract: Systems and methods are provided for configuring a bit length of a user equipment identifier (UE ID) used for communications in Layer 1 or Layer 2, or both, between a UE and a network. Multiple mechanisms are provided for the network to provide identifier parameter information (for example bit length and/or an identifier value or a range of values) to the UE to allow the UE to select a particular UE ID based on the identifier parameter information.Type: GrantFiled: December 20, 2017Date of Patent: May 23, 2023Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Kelvin Kar Kin Au, Mohammadhadi Baligh
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Patent number: 11632202Abstract: Different filtered-orthogonal frequency division multiplexing (f-OFDM) frame formats may be used to achieve the spectrum flexibility. F-OFDM waveforms are generated by applying a pulse shaping digital filter to an orthogonal frequency division multiplexed (OFDM) signal. Different frame formats may be used to carry different traffic types as well as to adapt to characteristics of the channel, transmitter, receiver, or serving cell. The different frame formats may utilize different sub-carrier (SC) spacings and/or cyclic prefix (CP) lengths. In some embodiments, the different frame formats also utilize different symbol durations and/or transmission time interval (TTI) lengths.Type: GrantFiled: October 26, 2020Date of Patent: April 18, 2023Assignee: Huawei Technologies Co., Ltd.Inventors: Kelvin Kar Kin Au, Jianglei Ma, Liqing Zhang
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Patent number: 11632203Abstract: For a wireless communications system, scalable orthogonal frequency division multiplexing (OFDM) numerology is incorporated in a manner that can apply to radio link transmissions in future wireless network for frequency division duplex (FDD) and time division duplex (TDD) communications.Type: GrantFiled: August 24, 2021Date of Patent: April 18, 2023Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Liqing Zhang, Kelvin Kar Kin Au, Jianglei Ma, Wen Tong, Toufiqul Islam
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Patent number: 11621809Abstract: Different filtered-orthogonal frequency division multiplexing (f-OFDM) frame formats may be used to achieve the spectrum flexibility. F-OFDM waveforms are generated by applying a pulse shaping digital filter to an orthogonal frequency division multiplexed (OFDM) signal. Different frame formats may be used to carry different traffic types as well as to adapt to characteristics of the channel, transmitter, receiver, or serving cell. The different frame formats may utilize different sub-carrier (SC) spacings and/or cyclic prefix (CP) lengths. In some embodiments, the different frame formats also utilize different symbol durations and/or transmission time interval (TTI) lengths.Type: GrantFiled: July 17, 2020Date of Patent: April 4, 2023Assignee: Huawei Technologies Co., Ltd.Inventors: Kelvin Kar Kin Au, Jianglei Ma, Liqing Zhang
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Patent number: 11606173Abstract: For a wireless communications system, scalable orthogonal frequency division multiplexing (OFDM) numerology is incorporated in a manner that can apply to radio link transmissions in future wireless network for frequency division duplex (FDD) and time division duplex (TDD) communications.Type: GrantFiled: August 24, 2021Date of Patent: March 14, 2023Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Liqing Zhang, Kelvin Kar Kin Au, Jianglei Ma, Wen Tong, Toufiqul Islam
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Patent number: 11606179Abstract: System and method embodiments are disclosed to provide mechanisms wireless communications. A method comprises transmitting, by a network device to a non-long term evolution (LTE) user equipment (UE), a bandwidth partitioning information describing a non-LTE bandwidth partition of a system bandwidth. The system bandwidth comprises an LTE bandwidth partition coexisting with the non-LTE bandwidth partition in the system bandwidth, and the LTE bandwidth partition is within the non-LTE bandwidth partition or the LTE bandwidth partition is adjacent to the non-LTE bandwidth partition.Type: GrantFiled: December 30, 2020Date of Patent: March 14, 2023Assignee: Huawei Technologies Co., Ltd.Inventors: Kelvin Kar Kin Au, Liqing Zhang, Jianglei Ma
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Publication number: 20220417913Abstract: A New Radio (NR) control signal that indicates one or more Long Term Evolution (LTE) network parameters may be transmitted to NR UEs to enable the NR UEs to identify which resources carry LTE signal(s). The NR UEs may then receive one or more NR downlink signals over remaining resources in a set of resources without processing those resources that carry LTE signal(s). The NR downlink signals may have a zero power level, or otherwise be blanked, over resources that carry the LTE signal(s).Type: ApplicationFiled: August 30, 2022Publication date: December 29, 2022Inventors: Amine Maaref, Kelvin Kar Kin Au, Jianglei Ma
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Patent number: 11533736Abstract: Systems and methods of scheduling grant-based traffic and mapping resources for grant-free traffic are provided. Grant-based traffic is scheduled in a first frequency partition, and grant-free traffic is mapped in a second frequency partition. In a first option, grant-based traffic is also scheduled in part of the first partition, but in a limited manner that ensures a given device's transmission and retransmissions do not all experience interference with the grant-based traffic. In another option, some grant-free traffic is mapped to part of the second partition and is spread in frequency across the second partition.Type: GrantFiled: May 15, 2019Date of Patent: December 20, 2022Assignee: Huawei Technologies Co., Ltd.Inventors: Toufiqul Islam, Kelvin Kar Kin Au, Jianglei Ma
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Patent number: 11533141Abstract: Methods and systems are provided to allow signals for multiple service slices using sub-bands that are part of a system bandwidth. In some cases the signals for a given service slice are self-contained within the sub-band in the sense that channels for initial access and ongoing communications are all located within the sub-band. A receiver that is only accessing the given service slice need only be capable of receiving the sub-band. The method may involve, in a first sub-band predefined for a first service slice, transmitting first initial access information for a first service associated with the first service slice. The method further involves, in a second sub-band predefined for a second service slice, transmitting second initial access information for a second service associated with the second service slice. The second sub-band is different from the first sub-band.Type: GrantFiled: August 29, 2019Date of Patent: December 20, 2022Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Kelvin Kar Kin Au, Jianglei Ma
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Patent number: 11490379Abstract: A New Radio (NR) control signal that indicates one or more Long Term Evolution (LTE) network parameters may be transmitted to NR UEs to enable the NR UEs to identify which resources carry LTE signal(s). The NR UEs may then receive one or more NR downlink signals over remaining resources in a set of resources without processing those resources that carry LTE signal(s). The NR downlink signals may have a zero power level, or otherwise be blanked, over resources that carry the LTE signal(s).Type: GrantFiled: August 3, 2020Date of Patent: November 1, 2022Assignee: Huawei Technologies Co., Ltd.Inventors: Amine Maaref, Kelvin Kar Kin Au, Jianglei Ma
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Patent number: 11483827Abstract: Signal processing complexity in fifth generation (5G) networks can be reduced by communicating wireless signals over self-contained partitions of a carrier such that the wireless transmission communicated over each self-contained partition of the carrier includes all physical control channel signaling required to decode data carried in a physical data channel of the partition. The control signaling may include resource assignment within the partition, modulation and coding scheme indication, reference signal configuration and retransmission information. In some embodiments, an anchor partition of a carrier is used to communicate initial access information for self-contained partitions of the carrier. The initial access information may include center-frequencies, bandwidths, and/or air interface configurations of the self-contained partitions. The anchor partition may also carry load indications associated with the self-contained partitions.Type: GrantFiled: June 25, 2020Date of Patent: October 25, 2022Assignee: Huawei Technologies Co., Ltd.Inventors: Jianglei Ma, Lu Rong, Kelvin Kar Kin Au