-
公开(公告)号：US20180310304A1
公开(公告)日：2018-10-25
申请号：US16021546
申请日：2018-06-28
Applicant: Apple Inc.
Inventor： Hang Zhang , Jianglei Ma , Ming Jia , Sophie Vrzic , Mo-Han Fong , Dong-Sheng Yu , Hua Xu
IPC: H04W72/04 , H04L5/00 , H04L27/26 , H04L1/00 , H04L25/02 , H04L29/06 , H04B7/12 , H04B7/06 , H04L1/06 , H04L1/18 , H04B7/02 , H04L25/03
CPC classification number: H04W72/0446 , H04B7/02 , H04B7/0669 , H04B7/12 , H04L1/0003 , H04L1/0009 , H04L1/0026 , H04L1/0071 , H04L1/0656 , H04L1/1812 , H04L1/1887 , H04L5/0007 , H04L5/0023 , H04L5/0039 , H04L5/0041 , H04L5/0042 , H04L5/0046 , H04L5/0048 , H04L5/0051 , H04L5/0053 , H04L5/006 , H04L5/0085 , H04L5/0096 , H04L25/0226 , H04L25/0228 , H04L25/03057 , H04L27/2627 , H04L27/2655 , H04L65/1066 , H04W72/0453
Abstract: Systems and methods for OFDM channelization are provided that allow for the coexistence of sub-band channels and diversity channels. Methods of defining diversity sub-channels and sub-band sub-channels are provided and systematic channel definition and labeling schemes are provided.
-
公开(公告)号：US09986027B2
公开(公告)日：2018-05-29
申请号：US14989152
申请日：2016-01-06
Applicant: Apple Inc.
Inventor： Shalini Periyalwar , Hang Zhang , Nimal Senarath , Derek Yu , Kelvin Kar-Kin Au , Karl Mann
CPC classification number: H04L67/1074 , H04L67/104 , H04W52/383 , H04W72/04 , H04W72/044
Abstract: Systems and methods are provided for delivering both PMP communications, for example standard cellular communications via a base station, and also delivering P2P communications, for example, communications between two mobile stations, using the same spectral resources for both types of communication.
-
公开(公告)号：US09954715B2
公开(公告)日：2018-04-24
申请号：US15267396
申请日：2016-09-16
Applicant: APPLE INC.
Inventor： Jianglei Ma , Hang Zhang , Wen Tong , Ming Jia , Peiying Zhu , Mo-Han Fong
CPC classification number: H04L27/2692 , H04B7/02 , H04B7/0452 , H04L5/0007 , H04L5/0023 , H04L5/0048 , H04L7/043 , H04L27/2613 , H04L27/265 , H04L27/2655 , H04L27/2686 , H04W24/02
Abstract: The present invention provides a preamble that is inserted into an OFDMA frame and has a common sequence for all the base stations participating in a transmission. The subscriber station performs fine synchronization using the common sequence on the common preamble, and the resulting peaks will provide the locations of candidate base stations. The base station specific search is then performed in the vicinities of those peaks by using base station specific pseudo-noise sequences. With this two stage cell search, the searching window is drastically reduced. The preamble is matched to known values by a respective receiver to decode the signals and permit multiple signals to be transferred from the transmitter to the receiver. The preamble may comprise two parts, Preamble-I and Preamble-2, which may be used in different systems, including multioutput, multi-input (MIMO) systems.
-
公开(公告)号：US20180035266A1
公开(公告)日：2018-02-01
申请号：US15730111
申请日：2017-10-11
Applicant: Apple Inc.
Inventor： Jianglei Ma , Aaron Callard , Ming Jia , Wen Tong , Peiying Zhu , Hang Zhang
CPC classification number: H04W4/06 , H04B7/0413 , H04B7/0697 , H04L5/0007 , H04L5/0048 , H04L5/0082 , H04W36/0007 , H04W36/30 , H04W72/005
Abstract: Systems and methods are disclosed herein for an enhanced Multimedia Broadcast Multicast Service (MBMS) in a wireless communications network. In one embodiment, a number of base stations in a MBMS zone, or broadcast region, accommodate both Spatial Multiplexing (SM) enabled user elements and non-SM enabled user elements. In another embodiment, a number of base stations form a MBMS zone, or broadcast region, where the MBMS zone is sub-divided into an SM zone and a non-SM zone. In another embodiment, the wireless communications network includes multiple MBMS zones. For each MBMS zone, base stations serving the MBMS zone transmit an MBMS zone identifier (ID) for the MBMS zone. The MBMS zone ID may be used by a user element for decoding and/or to determine when to perform a handoff from one MBMS zone to another.
-
185.发明授权公开(公告)号：US09843428B2
公开(公告)日：2017-12-12
申请号：US15463202
申请日：2017-03-20
Applicant: Apple Inc.
Inventor： Jianglei Ma , Ming Jia , Wen Tong , Peiying Zhu , Hang Zhang , Mo-Han Fong
CPC classification number: H04L5/0051 , H04L1/0003 , H04L1/0009 , H04L1/0618 , H04L5/0007 , H04L5/0023 , H04L5/0048 , H04L5/005 , H04L25/02 , H04L27/2602 , H04L27/2613 , H04L27/2647 , H04W52/325
Abstract: Aspects of the invention include methods and devices for inserting data and pilot symbols into Orthogonal Frequency Division Multiplexing (OFDM) frames having a time domain and a frequency domain. A method involves inserting in at least one zone of a first type a two dimensional array of data and pilot symbols in time and frequency and inserting in at least one zone of a second type a two dimensional array of data and pilot symbols in time and frequency. In some implementations the zone of the first type comprises common pilot symbols that can be detected by all receivers receiving the OFDM frame. In some implementations the zone of the second type comprises dedicated pilot symbols that are only detectable by a receiver that is aware of pre-processing used to encode the dedicated pilot symbols.
-
Patent Agency Ranking
公开(公告)号：US20170353954A1
公开(公告)日：2017-12-07
申请号：US15681557
申请日：2017-08-21
Applicant: Apple Inc.
Inventor： Hang Zhang , Jianglei Ma , Ming Jia , Sophie Vrzic , Mo-Han Fong , Dong-Sheng Yu , Hua Xu
IPC: H04W72/04 , H04B7/12 , H04L1/00 , H04L5/00 , H04L25/02 , H04L29/06 , H04L27/26 , H04L1/06 , H04L1/18 , H04B7/06 , H04L25/03
CPC classification number: H04W72/0446 , H04B7/02 , H04B7/0669 , H04B7/12 , H04L1/0003 , H04L1/0009 , H04L1/0026 , H04L1/0071 , H04L1/0656 , H04L1/1812 , H04L1/1887 , H04L5/0007 , H04L5/0023 , H04L5/0039 , H04L5/0041 , H04L5/0042 , H04L5/0046 , H04L5/0048 , H04L5/0051 , H04L5/0053 , H04L5/006 , H04L5/0085 , H04L5/0096 , H04L25/0226 , H04L25/0228 , H04L25/03057 , H04L27/2627 , H04L27/2655 , H04L65/1066 , H04W72/0453
Abstract: Systems and methods for OFDM channelization are provided that allow for the coexistence of sub-band channels and diversity channels. Methods of defining diversity sub-channels and sub-band sub-channels are provided and systematic channel definition and labeling schemes are provided.
-
公开(公告)号：US09807573B2
公开(公告)日：2017-10-31
申请号：US13944343
申请日：2013-07-17
Applicant: Apple Inc.
Inventor： Jianglei Ma , Aaron Callard , Ming Jia , Wen Tong , Peiying Zhu , Hang Zhang
CPC classification number: H04W4/06 , H04B7/0413 , H04B7/0697 , H04L5/0007 , H04L5/0048 , H04L5/0082 , H04W36/0005 , H04W36/30 , H04W72/005
Abstract: Systems and methods are disclosed herein for an enhanced Multimedia Broadcast Multicast Service (MBMS) in a wireless communications network. In one embodiment, a number of base stations in a MBMS zone, or broadcast region, accommodate both Spatial Multiplexing (SM) enabled user elements and non-SM enabled user elements. In another embodiment, a number of base stations form a MBMS zone, or broadcast region, where the MBMS zone is sub-divided into an SM zone and a non-SM zone. In another embodiment, the wireless communications network includes multiple MBMS zones. For each MBMS zone, base stations serving the MBMS zone transmit an MBMS zone identifier (ID) for the MBMS zone. The MBMS zone ID may be used by a user element for decoding and/or to determine when to perform a handoff from one MBMS zone to another.
-
公开(公告)号：US20170208530A1
公开(公告)日：2017-07-20
申请号：US15473815
申请日：2017-03-30
Applicant: Apple Inc.
Inventor： Hang Zhang , Peiying Zhu , Wen Tong , Nimal Gamini Senarath , Derek Yu , David G. Steer
IPC: H04W40/12 , H04B7/26 , H04L12/46 , H04W76/02 , H04W16/26 , H04W28/24 , H04W72/04 , H04W28/18 , H04L29/06
CPC classification number: H04W40/12 , H04B7/2606 , H04L12/4633 , H04L47/24 , H04L47/28 , H04L69/22 , H04W16/26 , H04W28/18 , H04W28/24 , H04W40/22 , H04W72/0413 , H04W72/042 , H04W76/12 , H04W84/047 , H04W84/12
Abstract: A wireless communication access path exists between an ingress station and an egress station. A logical communication tunnel is established between the ingress and egress stations directly or through any number of intermediate relay stations to handle session flows of PDUs. As PDUs arrive, the ingress station may determine and add information bearing on an identified QoS associated with the PDU to the PDUs before they are delivered to the downstream egress station(s) or intermediate relay station(s). The information may be used by the downstream stations to schedule the PDUs for further delivery. The information may also be used by the egress station to schedule the PDUs for delivery.
-
公开(公告)号：US20170126347A1
公开(公告)日：2017-05-04
申请号：US15399028
申请日：2017-01-05
Applicant: Apple Inc.
Inventor： Jianglei Ma , Ming Jia , Wen Tong , Peiying Zhu , Hua Xu , Hang Zhang , Mo-Han Fong
CPC classification number: H04J13/0003 , H04B1/707 , H04B7/0404 , H04B7/0678 , H04J13/00 , H04J13/16 , H04L5/0016 , H04L5/0026 , H04L5/0048 , H04L5/005 , H04L25/0204 , H04L25/0226 , H04L25/0232 , H04L25/03866 , H04L27/2613 , H04L27/2627 , H04W72/044
Abstract: In some embodiments of the invention, OFDM symbols are transmitted as a plurality of clusters. A cluster includes a plurality of OFDM sub-carriers in frequency, over a plurality of OFDM symbol durations in time. Each cluster includes data as well as pilot information as a reference signal for channel estimation. In some embodiments, a plurality of clusters collectively occupy the available sub-carrier set in the frequency domain that is used for transmission. In some embodiments of the invention data and/or pilots are spread within each cluster using code division multiplexing (CDM). In some embodiments pilots and data are separated by distributing data on a particular number of the plurality of OFDM symbol durations and pilots on a remainder of the OFDM symbol durations. CDM spreading can be performed in time and/or frequency directions.
-
公开(公告)号：US20170105234A1
公开(公告)日：2017-04-13
申请号：US15382930
申请日：2016-12-19
Applicant: Apple Inc.
Inventor： Jianglei Ma , Hua Xu , Ming Jia , Sarah Boumendil , Evelyne Le Strat , Hang Zhang , Peiying Zhu , Wen Tong
CPC classification number: H04W74/0891 , H04L1/06 , H04L1/0618 , H04L5/023 , H04L27/2627 , H04L27/2657 , H04L27/2662 , H04W74/006 , H04W74/0866
Abstract: Physical layer structures and access schemes for use in such networks are described and in particular initial access channel (IACH) structures are proposed. A spectrum efficient downlink (DL) IACH design supports different types of User Equipment (UE) capabilities and different system bandwidths. An IACH includes the synchronization channel (SCH) and broadcast-control channel (BCH). A non-uniform SCH for all system bandwidths is provided, as well as scalable bandwidth BCH depending on system bandwidth. An initial access procedure is provided, as well as an access procedure.
-
-
-
-
-
-
-
-
-
Search Results
210
records
(took 0.059 seconds)
