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公开(公告)号：US12028847B2
公开(公告)日：2024-07-02
申请号：US17985340
申请日：2022-11-11
Applicant: Apple Inc.
Inventor： Christian Ibars Casas , Seunghee Han
IPC: H04W72/12 , H04L1/00 , H04L1/1812 , H04L1/1829 , H04L1/1867 , H04W72/121 , H04W72/23 , H04W84/04
CPC classification number: H04W72/12 , H04L1/0007 , H04L1/0018 , H04L1/1812 , H04L1/1861 , H04L1/1893 , H04W72/121 , H04W72/23 , H04W84/042
Abstract: Latency reduction techniques for radio access networks are described. In various embodiments, a reduced transmission time interval (rTTI) may be implemented in order to reduce air interface latency in a radio access network. In some embodiments, an rTTI block may be defined, and some operations may be performed in rTTI block-wise fashion in order to reduce the marginal overhead associated with implementation of the rTTI. In various embodiments in which an rTTI is implemented, DM-RS granularity may be improved by use of techniques that enable data and reference signals to be multiplexed within a same OFDM symbol. In some embodiments, a current transmission time interval (TTI) may be maintained, and latency reduction may be achieved via the use of novel techniques for one or more of code block (CB) segmentation, uplink (UL) resource element (RE) mapping, and HARQ cycle timing. Other embodiments are described and claimed.
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公开(公告)号：US11528719B2
公开(公告)日：2022-12-13
申请号：US15571500
申请日：2015-12-22
Applicant: APPLE INC.
Inventor： Christian Ibars Casas , Seunghee Han
Abstract: Latency reduction techniques for radio access networks are described. In various embodiments, a reduced transmission time interval (rTTI) may be implemented in order to reduce air interface latency in a radio access network. In some embodiments, an rTTI block may be defined, and some operations may be performed in rTTI block-wise fashion in order to reduce the marginal overhead associated with implementation of the rTTI. In various embodiments in which an rTTI is implemented, DM-RS granularity may be improved by use of techniques that enable data and reference signals to be multiplexed within a same OFDM symbol. In some embodiments, a current transmission time interval (TTI) may be maintained, and latency reduction may be achieved via the use of novel techniques for one or more of code block (CB) segmentation, uplink (UL) resource element (RE) mapping and HARQ cycle timing. Other embodiments are described and claimed.
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公开(公告)号：US20230081573A1
公开(公告)日：2023-03-16
申请号：US17985340
申请日：2022-11-11
Applicant: Apple Inc.
Inventor： Christian Ibars Casas , Seunghee Han
Abstract: Latency reduction techniques for radio access networks are described. In various embodiments, a reduced transmission time interval (rTTI) may be implemented in order to reduce air interface latency in a radio access network. In some embodiments, an rTTI block may be defined, and some operations may be performed in rTTI block-wise fashion in order to reduce the marginal overhead associated with implementation of the rTTI. In various embodiments in which an rTTI is implemented, DM-RS granularity may be improved by use of techniques that enable data and reference signals to be multiplexed within a same OFDM symbol. In some embodiments, a current transmission time interval (TTI) may be maintained, and latency reduction may be achieved via the use of novel techniques for one or more of code block (CB) segmentation, uplink (UL) resource element (RE) mapping, and HARQ cycle timing. Other embodiments are described and claimed.
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公开(公告)号：US11102814B2
公开(公告)日：2021-08-24
申请号：US15745424
申请日：2015-12-24
Applicant: Apple Inc.
Inventor： Abhijeet Bhorkar , Hwan-Joon Kwon , Christian Ibars Casas , Seunghee Han , Qiaoyang Ye
Abstract: Described are mechanisms for eNB support of DRS in LAA, in which DRS is transmitted at one or more DRS occasions within a DMTC window, subject to LBT. In some embodiments, an eNB may include hardware processing circuitry comprising an antenna port, a first circuitry, a second circuitry, and a third circuitry. The first circuitry may be operable to determine a DMTC window of a wireless communication channel. The second circuitry may be operable to initiate one or more CCA checks through an antenna coupled to the antenna port prior to a DRS occasion within a DMTC time window. The third circuitry may be operable to initiate a DRS transmission through the antenna within the DMTC window upon a CCA check of the set of one or more CCA checks sensing that the wireless communication channel is idle. Also described are mechanisms for proactive support of DRS in LAA.
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Patent Agency Ranking
公开(公告)号：US10939423B2
公开(公告)日：2021-03-02
申请号：US15765778
申请日：2016-06-23
Applicant: APPLE INC
Inventor： Alexei Davydov , Seunghee Han , Victor Sergeev , Hong He , Christian Ibars Casas
IPC: H04W72/04 , H04L1/00 , H04L5/00 , H04M13/00 , H04W76/27 , H04L27/26 , H03M13/09 , H03M13/11 , H03M13/41 , H03M13/29 , H03M13/23 , H03M13/00
Abstract: Techniques for detecting puncturing of a first PDSCH (physical downlink shared channel) associated with a UE (user equipment) by a second PDSCH with a shorter TTI (transmission time interval) are discussed. A base station (e.g., Evolved NodeB or eNB) can configure the UE for potential puncturing and/or parameter(s) of the second PDSCH. The UE can detect puncturing of the first PDSCH based on the configuration, and can discard punctured symbols to mitigate interference from the second PDSCH.
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公开(公告)号：US20220394709A1
公开(公告)日：2022-12-08
申请号：US17819802
申请日：2022-08-15
Applicant: APPLE INC.
Inventor： Christian Ibars Casas , Seunghee Han , Hong He , Alexei Davydov
Abstract: Technology for a user equipment (UE) to perform reduced transmission time interval (TTI) data transmission within a wireless communication network is disclosed. The UE can process a process, for transmission to an eNodeB, control information within a short transmission time interval (TTI) over a short TTI resource block (RB) set within a short physical uplink control channel (S-PUCCH), wherein the short TTI is shorter in time than a TTI that has a duration of at least one (1) millisecond, and wherein the S-PUCCH is a subset of resources available for a short physical uplink shared channel (S-PUSCH) and the S-PUSCH is a subset of resources available for a legacy PUSCH transmission; and process, for transmission to the eNodeB, data within the short TTI over the short TTI RB set within the S-PUSCH.
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公开(公告)号：US11723002B2
公开(公告)日：2023-08-08
申请号：US17819802
申请日：2022-08-15
Applicant: APPLE INC.
Inventor： Christian Ibars Casas , Seunghee Han , Hong He , Alexei Davydov
IPC: H04L5/00 , H04W72/21 , H04W72/23 , H04W72/0446
CPC classification number: H04W72/0446 , H04L5/0053 , H04W72/21 , H04W72/23
Abstract: Technology for a user equipment (UE) to perform reduced transmission time interval (TTI) data transmission within a wireless communication network is disclosed. The UE can process a process, for transmission to an eNodeB, control information within a short transmission time interval (TTI) over a short TTI resource block (RB) set within a short physical uplink control channel (S-PUCCH), wherein the short TTI is shorter in time than a TTI that has a duration of at least one (1) millisecond, and wherein the S-PUCCH is a subset of resources available for a short physical uplink shared channel (S-PUSCH) and the S-PUSCH is a subset of resources available for a legacy PUSCH transmission; and process, for transmission to the eNodeB, data within the short TTI over the short TTI RB set within the S-PUSCH.
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公开(公告)号：US11419110B2
公开(公告)日：2022-08-16
申请号：US15767993
申请日：2016-04-01
Applicant: Apple Inc.
Inventor： Christian Ibars Casas , Seunghee Han , Hong He , Alexei Davydov
Abstract: Technology for a user equipment (UE) to perform reduced transmission time interval (TTI) data transmission within a wireless communication network is disclosed. The UE can process a process, for transmission to an eNodeB, control information within a short transmission time interval (TTI) over a short resource block (RB) set within a short physical uplink control channel (S-PUCCH), wherein the short TTI is shorter in time than a TTI that has a duration of at least one (1) millisecond, and wherein the S-PUCCH is a subset of resources available for a short physical uplink shared channel (S-PUSCH) and the S-PUSCH is a subset of resources available for a legacy PUSCH transmission; and process, for transmission to the eNodeB, data within the short TTI over the short TTI RB set within the S-PUSCH.
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9.发明授权公开(公告)号：US10757664B2
公开(公告)日：2020-08-25
申请号：US15566511
申请日：2015-12-24
Applicant: Apple Inc.
Inventor： Abhijeet Bhorkar , Christian Ibars Casas , Seunghee Han
Abstract: Technology for contention free physical uplink shared control channel (PUSCH) transmission using listen before talk procedure is disclosed. In an example, an apparatus of a user equipment (UE) having circuitry configured to achieves low latency synchronization with an anchor enhanced Node (eNB) by sensing for a predetermined time period if any physical uplink shared channels (PUSCH) are idle with the anchor eNB for uplink (UL) synchronization; providing a unique UE identification in a PUSCH transmission; and communicating the PUSCH transmission in one of the idle PUSCH channels for contention free communication with the anchor eNB for uplink synchronization.
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