公开(公告)号：US11032028B2

公开(公告)日：2021-06-08

申请号：US16733066

申请日：2020-01-02

Applicant: QUALCOMM Incorporated

Inventor： Vijayvaradharaj Tirucherai Muralidharan ,  Gowrisankar Somichetty ,  Shashidhar Vummintala ,  Kapil Bhattad ,  Dominique Francois Bressanelli

IPC: H04L1/00 ,  H04L5/00 ,  H04W72/12 ,  H04L1/18 ,  H03M13/29 ,  H03M13/00 ,  H03M13/11 ,  H03M13/15 ,  H03M13/23 ,  H03M13/13

Abstract: Aspects of the disclosure relate to techniques for mitigating the decoding errors observed at the receiver as a result of puncturing symbols between consecutive subframes having the same transmission direction. To reduce the decoding errors, a plurality of transmission options, each including a number of resource blocks and a modulation and coding scheme (MCS), may be identified. In addition, each transmission option may be associated with one or more puncturing patterns that hinder decoding of a codeword at the receiver. The base station or user equipment (UE) may then select or modify at least one aspect of a scheduling decision involving the communication of the codeword in a given subframe of at least two consecutive subframes to minimize decoding errors. For example, a selected puncturing pattern or a transport block size associated with a selected transmission option may be modified.

公开(公告)号：US20160142936A1

公开(公告)日：2016-05-19

申请号：US14547325

申请日：2014-11-19

Applicant: QUALCOMM Incorporated

Inventor： Dominique Francois Bressanelli ,  Saket Bathwal ,  Gang Andy Xiao ,  Shailesh Maheshwari

IPC: H04W28/04 ,  H04L1/22 ,  H04L5/00 ,  H04W56/00 ,  H04W28/06

CPC classification number: H04W28/04 ,  H04L1/22 ,  H04L5/0055 ,  H04L12/00 ,  H04L12/6418 ,  H04L29/06 ,  H04L69/04 ,  H04W28/06 ,  H04W56/00 ,  H04W56/001

Abstract: Methods, systems, and devices are described for wireless communication at a user equipment (UE). In some examples, the UE may identify an initialization and refresh (IR) packet at the radio link control (RLC) layer based the size of the IR packet, where the IR packet comprises a larger ciphered PDU size than a compressed RoHC packet. Accordingly, once the UE identifies the received packet as an IR packet, the UE may attempt to decipher the IR packet using one or more HFN offset values. In one example, the UE may determine whether the IR packet is deciphered correctly based on cyclic redundancy check (CRC) value of the deciphered IR packet. As a result, the present disclosure allows the UE to re-synchronize with the transmitting device by at least one of incrementing or decrementing an HFN value at the receiving device.

Abstract translation: 描述了用于用户设备（UE）的无线通信的方法，系统和设备。 在一些示例中，UE可以基于IR分组的大小来识别在无线电链路控制（RLC）层处的初始化和刷新（IR）分组，其中IR分组包括比压缩的RoHC分组更大的加密的PDU大小。 因此，一旦UE将接收的分组识别为IR分组，则UE可以尝试使用一个或多个HFN偏移值来解密IR分组。 在一个示例中，UE可以基于解密的IR分组的循环冗余校验（CRC）值来确定IR分组是否被正确解密。 结果，本公开允许UE通过在接收设备处递增或递减HFN值中的至少一个来与发送设备重新同步。

公开(公告)号：US20230300929A1

公开(公告)日：2023-09-21

申请号：US17587917

申请日：2022-01-28

Applicant: QUALCOMM Incorporated

Inventor： Dominique Francois Bressanelli ,  Ashish Raj Sharma

IPC: H04W76/18 ,  H04W72/14 ,  H04W72/12 ,  H04L5/00 ,  H04L1/18

CPC classification number: H04W76/18 ,  H04L1/1812 ,  H04L5/0053 ,  H04W72/1284 ,  H04W72/14

Abstract: Methods, systems, and devices for wireless communications are described. A base station may transmit a first transport block including a first uplink grant which schedules a first set of uplink shared channel transmissions for the UE. The base station may monitor the channel to detect an energy value for a demodulation reference signal (DMRS) associated with the one or more uplink shared channel transmissions associated with the first uplink grant that is less than a threshold energy value. Based on the relatively low DMRS energy, the base station may modify a size of a second transport block relative to the first transport block, the second transport block including a second uplink grant that schedules a second set of one or more uplink shared channel transmissions for the UE. The base station may then signal the grant for the modified second transport block to the UE or to another device.

公开(公告)号：US10299162B2

公开(公告)日：2019-05-21

申请号：US15407045

申请日：2017-01-16

Applicant: QUALCOMM Incorporated

Inventor： Dominique Francois Bressanelli ,  Deepak Sah ,  Saket Bathwal

IPC: H04W28/06 ,  H04L1/18 ,  H04L29/06

Abstract: Methods, systems, and devices for wireless communication are described. Different robust header compression (RoHC) schemes may be used when a change in a header extension flag between packets of a communication session is determined. For example, a transmitting device may determine a value of a header extension flag in a packet has changed with respect to header extension flags in preceding packets. Upon detecting the change in the header extension flag, the device may compress the header using different RoHC schemes. For instance, the device may compress the header by reverting to an initialization and refresh (IR) state. Additionally or alternatively, the device may compress the header using a compression profile that refrains from compressing a certain portion of the header. In some cases, the RoHC scheme used for compressing the header may be based on how frequently the value of the extension flag changes between packets.

公开(公告)号：US10037240B2

公开(公告)日：2018-07-31

申请号：US14864685

申请日：2015-09-24

Applicant: QUALCOMM Incorporated

Inventor： Dominique Francois Bressanelli ,  Saket Bathwal ,  Deepak Sah

IPC: G06F11/07 ,  H04W8/30 ,  H04L29/06 ,  H04W28/06

CPC classification number: G06F11/0793 ,  G06F11/0709 ,  G06F11/0751 ,  H04L69/04 ,  H04L69/22 ,  H04W8/30 ,  H04W28/06

Abstract: Methods, systems, and devices may implement a header repair mechanism to deal with a loss of successive compressed headers (e.g., due to radio interface). The present methods and apparatus exploit the fact that once a correct timestamp (TS) from a previous decompression success (called “last successfully decomp_TS”) is known, another (e.g., a subsequent) TS should be in the form: last successfully decomp_TS+n*min_TS_STRIDE, where n is a positive integer if the estimated sequence number (SN) is higher than the last successfully decompressed SN, and a negative integer if the estimated SN is lower than the last successfully decompressed SN, and min_TS_STRIDE is the expected minimum TS increment, which is known and directly related to the medium sample rate and frame rate, for example.

公开(公告)号：US20170091014A1

公开(公告)日：2017-03-30

申请号：US14864685

申请日：2015-09-24

Applicant: QUALCOMM Incorporated

Inventor： Dominique Francois Bressanelli ,  Saket Bathwal ,  Deepak Sah

IPC: G06F11/07 ,  H04W8/30 ,  H04L29/06

CPC classification number: G06F11/0793 ,  G06F11/0709 ,  G06F11/0751 ,  H04L69/04 ,  H04L69/22 ,  H04W8/30 ,  H04W28/06

Abstract: Methods, systems, and devices may implement a header repair mechanism to deal with a loss of successive compressed headers (e.g., due to radio interface). The present methods and apparatus exploit the fact that once a correct timestamp (TS) from a previous decompression success (called “last successfully decomp_TS”) is known, another (e.g., a subsequent) TS should be in the form: last successfully decomp_TS+n*min_TS_STRIDE, where n is a positive integer if the estimated sequence number (SN) is higher than the last successfully decompressed SN, and a negative integer if the estimated SN is lower than the last successfully decompressed SN, and min_TS_STRIDE is the expected minimum TS increment, which is known and directly related to the medium sample rate and frame rate, for example.

公开(公告)号：US12143870B2

公开(公告)日：2024-11-12

申请号：US17662978

申请日：2022-05-11

Applicant: QUALCOMM Incorporated

Inventor： Dominique Francois Bressanelli ,  Osama Lotfallah ,  Cogol Tina ,  Abhishek Bhatnagar ,  Vitaly Drapkin ,  Lenaig Genevieve Chaponniere

IPC: H04W60/04 ,  H04W36/00

Abstract: Aspects disclosed herein facilitate security handling of 5GS to EPC reselection are disclosed herein. An example method at a UE includes transmitting a first TAU request, the first TAU request encoded using a first security context associated with a first RAT, the first TAU request being integrity protected using a first uplink count based on the first security context, and the first TAU request including a first set of information including an identifier mapped to a second RAT associated with the first network entity. The example method also includes transmitting a second TAU request, the second TAU request including the first set of information, the second TAU request being integrity protected using a second uplink count. The example method also includes communicating based on a mapped security context based on the first security context and at least one of the first uplink count or the second uplink count.

公开(公告)号：US10110360B2

公开(公告)日：2018-10-23

申请号：US15216480

申请日：2016-07-21

Applicant: QUALCOMM Incorporated

Inventor： Dominique Francois Bressanelli ,  Saket Bathwal ,  Deepak Sah

IPC: H04L5/00 ,  H04L1/16 ,  H04L1/18 ,  H04L29/06 ,  H03M13/00 ,  H03M7/30 ,  H04W28/06

Abstract: A recovery mechanism for robust header compression (ROHC) is disclosed for wireless communication systems. The ROHC recovery mechanism may allow a receiver and/or transmitter in the wireless systems to establish or reestablish a context of a packet transmission session when an initialization and refresh message is lost. In the ROHC recovery mechanism, upon receiving a compressed packet that is not associated with a context, a receiver sends a message to a transmitter suggesting the transmitter to transition to another mode. Upon receiving a subsequent packet transmission that is not associated with a context, the receiver sends another message indicating that a context has not been established or has been lost. The transmitter may then send the receiver necessary information to establish a context for the packet transmission session.

公开(公告)号：US20140050213A1

公开(公告)日：2014-02-20

申请号：US13966851

申请日：2013-08-14

Applicant: QUALCOMM Incorporated

Inventor： Bao Vinh Nguyen ,  Dominique Francois Bressanelli ,  Shailesh Maheshwari ,  Deepak Krishnamoorthi ,  Prasanna Venkata Santosh Kumar Tallapragada

IPC: H04W56/00

CPC classification number: H04W56/0015 ,  H04W56/0045 ,  H04W74/008

Abstract: Aspects generally relate to wireless communications and, more particularly, to methods, systems and apparatus for timing synchronization during a wireless uplink random access procedure. For example, certain aspects relate to a technique for receiving first timing advance information associated with uplink wireless communications with a base station (BS), transmitting a random access connection request message to the BS, receiving a random access response from the BS while the first timing advance information is within a valid time period, the random access response comprising second timing advance information associated with uplink wireless communications with the base station, determining, after receiving the random access response, that the valid time period for the first timing advance information has expired, and utilizing the second timing advance information for uplink communications with the BS after determining that the valid time period for the first timing advance information has expired. Numerous other aspects are provided.

Abstract translation: 方面通常涉及无线通信，并且更具体地涉及用于无线上行链路随机接入过程期间的定时同步的方法，系统和装置。 例如，某些方面涉及用于接收与基站（BS）的上行链路无线通信相关联的第一定时提前信息的技术，向BS发送随机接入连接请求消息，从BS接收随机接入响应，而第一 定时提前信息在有效时间段内，随机接入响应包括与基站的上行链路无线通信相关联的第二定时提前信息，在接收到随机接入响应之后确定第一定时提前信息的有效时间段具有 并且在确定了第一定时提前信息的有效时间段已经到期之后，利用第二定时提前信息用于与BS的上行链路通信。 提供了许多其他方面。

公开(公告)号：US20130229965A1

公开(公告)日：2013-09-05

申请号：US13781269

申请日：2013-02-28

Applicant: QUALCOMM INCORPORATED

Inventor： Dominique Francois Bressanelli ,  Amit Mandil

IPC: H04W52/02

CPC classification number: H04W52/0258 ,  H04W52/0216 ,  H04W52/0229 ,  H04W68/005 ,  H04W76/28 ,  Y02D70/1242 ,  Y02D70/1244 ,  Y02D70/1246 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/146 ,  Y02D70/23 ,  Y02D70/24

Abstract: Aspects of the present disclosure generally relate to wireless communications and, more particularly, to techniques for paging during Long Term Evolution (LTE) discontinuous reception (DRX) operations. Aspects generally include determining whether one or more paging occasions from a base station (BS) occur while a receiver of an apparatus is in an active state based on a discontinuous reception (DRX) cycle, adjusting a period that the receiver is in the active state during the DRX cycle if at least one paging occasion does not occur while the receiver is in the active state, and monitoring for at least one paging occasion occurring while the receiver is in the active state during the adjusted period.

Abstract translation: 本公开的方面通常涉及无线通信，更具体地涉及在长期演进（LTE）间歇接收（DRX）操作期间的寻呼技术。 方面通常包括基于不连续接收（DRX）周期来确定设备的接收机是否处于活动状态时是否发生来自基站（BS）的一个或多个寻呼时机，调整接收机处于活动状态的周期 如果在接收机处于活动状态期间不发生至少一个寻呼时机，则在DRX周期期间，并且在调整期间接收机处于活动状态时监视至少一个寻呼机会。