公开(公告)号：US10206181B2

公开(公告)日：2019-02-12

申请号：US13752863

申请日：2013-01-29

Applicant: Texas Instruments Incorporated

Inventor： Anthony Edet Ekpenyong ,  Ralf Matthias Bendlin ,  Pierre Bertrand

IPC: H04W52/32 ,  H04W74/08 ,  H04W52/28 ,  H04W52/40 ,  H04W52/48

Abstract: Systems and methods for specifying UE power control allocation for simultaneous transmission of PRACH in a secondary serving cell and PUCCH/PUSCH/SRS in a different serving cell in another timing advance group are disclosed. Rules are provided for prioritizing transmission of PRACH and/or other UL channels/signals. Additionally, UE power allocation is controlled for misaligned subframes across different timing advance groups. Latency of UL synchronization for a secondary serving cell is reduced by prioritizing PRACH retransmission.

公开(公告)号：US20180007672A1

公开(公告)日：2018-01-04

申请号：US15707741

申请日：2017-09-18

Applicant: Texas Instruments Incorporated

Inventor： Runhua Chen ,  Ralf Matthias Bendlin

IPC: H04W72/04 ,  H04L1/00 ,  H04W72/00 ,  H04W28/26

CPC classification number: H04W72/042 ,  H04L1/0046 ,  H04W28/26 ,  H04W72/00

Abstract: A system and method for providing both localized and distributed transmission modes for EPDCCH is disclosed, where one EPDCCH comprises of one or multiple CCEs. Localized versus distributed transmission may be defined in terms of the EPDCCH to CCE resource mapping. In a localized transmission CCEs are restricted to be contained within one PRB. In a distributed transmission a CCE spans over multiple PRBs. A UE can be configured to either receive the EPDCCH only in localized or only in distributed transmissions. A UE can also be configured to expect EPDCCH transmissions in both localized and distributed transmissions. In each PRB configured by the higher layer as an EPDCCH resource, 24 REs that may be used for any DMRS transmission are always reserved and not used for EPDCCH transmission.

公开(公告)号：US09769806B2

公开(公告)日：2017-09-19

申请号：US13743202

申请日：2013-01-16

Applicant: Texas Instruments Incorporated

Inventor： Runhua Chen ,  Ralf Matthias Bendlin

IPC: H04W72/04 ,  H04L1/00 ,  H04W28/26 ,  H04W72/00

CPC classification number: H04W72/042 ,  H04L1/0046 ,  H04W28/26 ,  H04W72/00

Abstract: A system and method for providing both localized and distributed transmission modes for EPDCCH is disclosed, where one EPDCCH comprises of one or multiple CCEs. Localized versus distributed transmission may be defined in terms of the EPDCCH to CCE resource mapping. In a localized transmission CCEs are restricted to be contained within one PRB. In a distributed transmission a CCE spans over multiple PRBs. A UE can be configured to either receive the EPDCCH only in localized or only in distributed transmissions. A UE can also be configured to expect EPDCCH transmissions in both localized and distributed transmissions. In each PRB configured by the higher layer as an EPDCCH resource, 24 REs that may be used for any DMRS transmission are always reserved and not used for EPDCCH transmission.

公开(公告)号：US20150358827A1

公开(公告)日：2015-12-10

申请号：US14718593

申请日：2015-05-21

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Ralf Matthias Bendlin ,  Anthony Edet Ekpenyong ,  Pierre Bertrand ,  Brian F. Johnson

IPC: H04W16/14 ,  H04W74/08 ,  H04W72/08

CPC classification number: H04W16/14 ,  H04W36/0055 ,  H04W72/0413 ,  H04W72/082 ,  H04W74/0816

Abstract: A method of operating a long term evolution (LTE) communication system on a shared frequency spectrum is disclosed. A user equipment (UE) is initialized on an LTE frequency band. A base station (eNB) monitors the shared frequency spectrum to determine if it is BUSY. The eNB transmits to the UE on the shared frequency spectrum if it is not BUSY. The eNB waits for a first time if it is BUSY and directs the UE to vacate the shared frequency spectrum after the first time.

Abstract translation: 公开了一种在共享频谱上操作长期演进（LTE）通信系统的方法。 在LTE频带上初始化用户设备（UE）。 基站（eNB）监视共享频谱以确定其是否为BUSY。 如果eNB不是BUSY，则eNB在共享频谱上向UE发送。 如果它是BUSY，则eNB等待第一次，并且指示UE在第一次之后腾出共享频谱。

公开(公告)号：US20250016790A1

公开(公告)日：2025-01-09

申请号：US18893953

申请日：2024-09-23

Applicant: Texas Instruments Incorporated

Inventor： Runhua Chen ,  Ralf Matthias Bendlin

IPC: H04W72/23 ,  H04L1/00 ,  H04L5/00 ,  H04W72/044

Abstract: A user equipment device obtains a first measurement using a first CSI-RS sub-resource and a second measurement using a second CSI-RS sub-resource. The user device derives a single CSI-process based on the first and the second measurements and reports the CSI-process to a base station. The user device receives a message from the base station configuring the first and second CSI-RS sub-resources corresponding to the single CSI-process to be reported by the user device. The message from the base station comprises a configuration of the first CSI-RS sub-resource and a separate configuration of the second CSI-RS sub-resource. The configuration of each CSI-RS sub-resource comprises, for the corresponding CSI-RS sub-resource, at least a CSI-RS sub-resource index, a periodicity, and an offset. The user device may alternatively obtain measurements using any number of CSI-RS sub-resources and then derive and report a single CSI-process based on the plurality of measurements.

公开(公告)号：US11818717B2

公开(公告)日：2023-11-14

申请号：US14718616

申请日：2015-05-21

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Anthony Edet Ekpenyong ,  Ralf Matthias Bendlin ,  Pierre Bertrand

IPC: H04W72/21 ,  H04L5/00 ,  H04L1/1812 ,  H04L1/1829 ,  H04L1/00

CPC classification number: H04W72/21 ,  H04L1/1829 ,  H04L5/001 ,  H04L5/0053 ,  H04L5/0092 ,  H04L1/1812 ,  H04L5/0098 ,  H04L2001/0092

Abstract: A method of operating a wireless communication system is disclosed. The method includes configuring a user equipment (UE) for carrier aggregation with N serving cells, where N is a positive integer. The UE is scheduled to receive downlink data from M of the N serving cells at a first time, where M is a positive integer less than or equal to N. The UE provides uplink control information (UCI) for only the M serving cells.

公开(公告)号：US20230013973A1

公开(公告)日：2023-01-19

申请号：US17935458

申请日：2022-09-26

Applicant: Texas Instruments Incorporated

Inventor： Runhua Chen ,  Ralf Matthias Bendlin

IPC: H04W72/04 ,  H04L1/00

Abstract: A system and method for providing both localized and distributed transmission modes for EPDCCH is disclosed, where one EPDCCH comprises of one or multiple CCEs. Localized versus distributed transmission may be defined in terms of the EPDCCH to CCE resource mapping. In a localized transmission CCEs are restricted to be contained within one PRB . In a distributed transmission a CCE spans over multiple PRBs. A UE can be configured to either receive the EPDCCH only in localized or only in distributed transmissions. A UE can also be configured to expect EPDCCH transmissions in both localized and distributed transmissions. In each PRB configured by the higher layer as an EPDCCH resource, 24 REs that may be used for any DMRS transmission are always reserved and not used for EPDCCH transmission.

公开(公告)号：US11239971B2

公开(公告)日：2022-02-01

申请号：US13666429

申请日：2012-11-01

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Runhua Chen ,  Anthony Edet Ekpenyong ,  Vikram Chandrasekhar ,  Ralf Matthias Bendlin

IPC: H04L5/00 ,  H04B7/26

Abstract: A method of mapping control information in a wireless communication system is disclosed (FIG. 5). The method includes forming a subframe (FIG. 3) having a bandwidth and having plural regions (302-306). A base station (eNB) determines a communication mode with a remote user equipment. The base station maps control information specific to the user equipment into a first region of the subframe (508). The base station also maps control information common to plural user equipments into a second region of the subframe (512). The subframe is transmitted to the plural user equipments (412, FIG. 4).

公开(公告)号：US20210160837A1

公开(公告)日：2021-05-27

申请号：US17170511

申请日：2021-02-08

Applicant: Texas Instruments Incorporated

Inventor： Runhua Chen ,  Ralf Matthias Bendlin

IPC: H04W72/04 ,  H04L1/00 ,  H04L5/00

Abstract: A user equipment device obtains a first measurement using a first CSI-RS sub-resource and a second measurement using a second CSI-RS sub-resource. The user device derives a single CSI-process based on the first and the second measurements and reports the CSI-process to a base station. The user device receives a message from the base station configuring the first and second CSI-RS sub-resources corresponding to the single CSI-process to be reported by the user device. The message from the base station comprises a configuration of the first CSI-RS sub-resource and a separate configuration of the second CSI-RS sub-resource. The configuration of each CSI-RS sub-resource comprises, for the corresponding CSI-RS sub-resource, at least a CSI-RS sub-resource index, a periodicity, and an offset. The user device may alternatively obtain measurements using any number of CSI-RS sub-resources and then derive and report a single CSI-process based on the plurality of measurements.

公开(公告)号：US20200045681A1

公开(公告)日：2020-02-06

申请号：US16601325

申请日：2019-10-14

Applicant: Texas Instruments Incorporated

Inventor： Ralf Matthias Bendlin ,  Runhua Chen

IPC: H04W72/04 ,  H04L5/00

Abstract: A method of operating a wireless communication system (FIG. 4) is disclosed. The method includes receiving downlink control information (702) for transmission to a user equipment (UE) in an enhanced physical downlink control channel (EPDCCH). A pseudo-random number generator is initialized (706) for generating a pseudo-random sequence. A plurality of demodulation reference signals (DMRS) are generated with the pseudo-random sequence. The plurality of DMRS is mapped with the EPDCCH and transmitted to the UE (712).