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公开(公告)号：US10098021B2
公开(公告)日：2018-10-09
申请号：US14724567
申请日：2015-05-28
Applicant: Apple Inc.
Inventor： Si Li , Deepak Chitlur Lakshman , Srinivasan Vasudevan
Abstract: A wireless voice call may be established between an originating user equipment (UE) and a terminating UE, via a cellular network, using preconditions. The originating UE may transmit an invitation for a packet-switched wireless voice call, beginning a first period of time. The terminating UE may cancel the invitation in response to determining that a first precondition, such as establishment of a dedicated bearer between the originating UE and the cellular network, is not satisfied within the first period of time. The first period of time may be interrupted in response to determining that the first precondition is satisfied, and a second period of time may then begin. The cellular network may cancel the invitation in response to determining that a second precondition, such as establishment of a dedicated bearer between the terminating UE and the cellular network, is not satisfied within the second period of time.
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公开(公告)号：US10305627B2
公开(公告)日：2019-05-28
申请号：US14503217
申请日：2014-09-30
Applicant: Apple Inc.
Inventor： Si Li , Zhu Ji , Srinivasan Vasudevan
IPC: H04L1/00
Abstract: A wireless communication system is presented for adaptive uplink (UL) link adaptation (LA). The adaptive UL LA can include multiple outer loops, for which multiple block error rate (BLER) filtering is performed. Each of the multiple BLER filtering can be performed on groups or sub-groups of subframes, in which each group has the same or similar coding characteristics. For example, one group in TD-LTE could be subframes with sounding reference signal (SRS) and another group could be subframes without SRS. Each of the multiple BLER filtering can use the same or different BLER algorithm, BLER target and/or BLER parameters.
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3.发明授权公开(公告)号：US09210673B2
公开(公告)日：2015-12-08
申请号：US13738083
申请日：2013-01-10
Applicant: Apple Inc.
Inventor： Si Li , Giri Prassad Deivasigamani
Abstract: Regaining uplink synchronization after timing alignment failure in cellular communications. An out-of-sync condition with a cellular network may be detected. A first type of random access procedure may be initiated in response to detecting the out-of-sync condition. It may be determined whether or not a message transmitted as part of the first type of random access procedure is received by the cellular network. If the message transmitted as part of the first type of RACH is received by the network and no response to the message is received from the cellular network, a second type of RACH may be initiated. The second type of RACH may include a message having an indication that an out-of-sync condition occurred.
Abstract translation: 在蜂窝通信中定时定位失败后恢复上行链路同步。 可以检测到与蜂窝网络不同步的情况。 可以响应于检测到不同步状态而启动第一类型的随机接入过程。 可以确定作为第一类型的随机接入过程发送的消息是否被蜂窝网络接收。 如果作为第一类型的RACH发送的消息被网络接收，并且没有从蜂窝网络接收到对消息的响应，则可以启动第二类型的RACH。 第二类型的RACH可以包括具有发生不同步状态的指示的消息。
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公开(公告)号：US09288720B2
公开(公告)日：2016-03-15
申请号：US14049146
申请日：2013-10-08
Applicant: Apple Inc.
Inventor： Gaurav R. Nukala , Giri Prassad Deivasigamani , Si Li
CPC classification number: H04W36/00 , H04W36/0055 , H04W36/36
Abstract: Apparatus and methods of performing a network cell reselection for a mobile device after a handover attempt fails. Initially, a handover is attempted for the mobile device in a radio resource control (RRC) connected mode from a serving network base station to a target network base station. Next a failure condition associated with the handover attempt is identified by the mobile device. In one scenario, the failure condition is identified in response to the mobile device receiving an RRC connection release message from its serving network base station. In another scenario, the failure condition is identified when the mobile device detects a radio link failure event. Thereafter, the mobile device performs a network scan to identify any available network base stations for the network cell reselection. Subsequently, the mobile device attaches to a preferred network base station of the identified available network base stations to complete the network cell reselection.
Abstract translation: 在切换尝试失败之后为移动设备执行网络小区重选的装置和方法。 最初，在从服务网络基站到目标网络基站的无线电资源控制（RRC）连接模式中，针对移动设备尝试切换。 接下来，移动设备识别与切换尝试相关联的故障条件。 在一种情况下，响应于移动设备从其服务网络基站接收到RRC连接释放消息来识别故障条件。 在另一种情况下，当移动设备检测到无线电链路故障事件时，识别故障条件。 此后，移动设备执行网络扫描以识别用于网络小区重选的任何可用的网络基站。 随后，移动设备连接到所识别的可用网络基站的优选网络基站，以完成网络小区重新选择。
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公开(公告)号：US20150263830A1
公开(公告)日：2015-09-17
申请号：US14503217
申请日：2014-09-30
Applicant: APPLE INC.
Inventor： Si Li , Zhu Ji , Srinivasan Vasudevan
IPC: H04L5/00
CPC classification number: H04L1/0015 , H04L1/0003 , H04L2001/0098
Abstract: A wireless communication system is presented for adaptive uplink (UL) link adaptation (LA). The adaptive UL LA can include multiple outer loops, for which multiple block error rate (BLER) filtering is performed. Each of the multiple BLER filtering can be performed on groups or sub-groups of subframes, in which each group has the same or similar coding characteristics. For example, one group in TD-LTE could be subframes with sounding reference signal (SRS) and another group could be subframes without SRS. Each of the multiple BLER filtering can use the same or different BLER algorithm, BLER target and/or BLER parameters.
Abstract translation: 提出了一种用于自适应上行链路（UL）链路自适应（LA）的无线通信系统。 自适应UL LA可以包括多个外部循环，对其进行多个块错误率（BLER）滤波。 可以对子帧的子组或子组执行多个BLER滤波中的每一个，其中每个组具有相同或相似的编码特性。 例如，TD-LTE中的一个组可以是具有探测参考信号（SRS）的子帧，另一组可以是没有SRS的子帧。 多个BLER滤波器中的每一个可以使用相同或不同的BLER算法，BLER目标和/或BLER参数。
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Patent Agency Ranking
公开(公告)号：US20150237675A1
公开(公告)日：2015-08-20
申请号：US14180520
申请日：2014-02-14
Applicant: Apple Inc.
Inventor： Li Su , Yingjie Zhao , Si Li
CPC classification number: H04W88/06 , H04W72/0413
Abstract: Improving uplink behavior for a user equipment (UE) having a radio capable of communicating using at least a first radio access technology (RAT) and a second RAT. The UE may be configured to use the radio for both the first RAT and the second RAT. The UE may receive a first uplink grant corresponding to the first RAT. Prior to completing a process corresponding to the first uplink grant for the first RAT, the UE may communicate using the second RAT. After communicating using the second RAT, the UE may transmit an uplink request for the first RAT instead of completing the process corresponding to the first uplink grant.
Abstract translation: 改善具有能够使用至少第一无线电接入技术（RAT）和第二RAT进行通信的无线电的用户设备（UE）的上行链路行为。 UE可以被配置为对于第一RAT和第二RAT都使用无线电。 UE可以接收对应于第一RAT的第一上行链路许可。 在完成与第一RAT的第一上行链路授权相对应的过程之前，UE可以使用第二RAT进行通信。 在使用第二RAT进行通信之后，UE可以发送用于第一RAT的上行链路请求，而不是完成与第一上行链路授权相对应的处理。
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7.发明申请公开(公告)号：US20140064195A1
公开(公告)日：2014-03-06
申请号：US13738083
申请日：2013-01-10
Applicant: APPLE INC.
Inventor： Si Li , Giri Prassad Deivasigamani
IPC: H04W56/00
Abstract: Regaining uplink synchronization after timing alignment failure in cellular communications. An out-of-sync condition with a cellular network may be detected. A first type of random access procedure may be initiated in response to detecting the out-of-sync condition. It may be determined whether or not a message transmitted as part of the first type of random access procedure is received by the cellular network. If the message transmitted as part of the first type of RACH is received by the network and no response to the message is received from the cellular network, a second type of RACH may be initiated. The second type of RACH may include a message having an indication that an out-of-sync condition occurred.
Abstract translation: 在蜂窝通信中定时定位失败后恢复上行链路同步。 可以检测到与蜂窝网络不同步的情况。 可以响应于检测到不同步状态而启动第一类型的随机接入过程。 可以确定作为第一类型的随机接入过程发送的消息是否被蜂窝网络接收。 如果作为第一类型的RACH发送的消息被网络接收，并且没有从蜂窝网络接收到对消息的响应，则可以启动第二类型的RACH。 第二类型的RACH可以包括具有发生不同步状态的指示的消息。
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公开(公告)号：US20160353315A1
公开(公告)日：2016-12-01
申请号：US14724567
申请日：2015-05-28
Applicant: Apple Inc.
Inventor： Si Li , Deepak Chitlur Lakshman , Srinivasan Vasudevan
CPC classification number: H04W24/04 , H04W28/0215 , H04W28/0252 , H04W28/0263
Abstract: A wireless voice call may be established between an originating user equipment (UE) and a terminating UE, via a cellular network, using preconditions. The originating UE may transmit an invitation for a packet-switched wireless voice call, beginning a first period of time. The terminating UE may cancel the invitation in response to determining that a first precondition, such as establishment of a dedicated bearer between the originating UE and the cellular network, is not satisfied within the first period of time. The first period of time may be interrupted in response to determining that the first precondition is satisfied, and a second period of time may then begin. The cellular network may cancel the invitation in response to determining that a second precondition, such as establishment of a dedicated bearer between the terminating UE and the cellular network, is not satisfied within the second period of time.
Abstract translation: 可以使用前提条件通过蜂窝网络在始发用户设备（UE）和终端UE之间建立无线语音呼叫。 始发UE可以在第一时间段开始发送分组交换无线语音呼叫的邀请。 响应于确定在第一时间段内不满足诸如始发UE和蜂窝网络之间的专用承载的建立的第一前提条件，终止UE可以取消邀请。 响应于确定第一前提条件得到满足，第一时间段可能被中断，然后可以开始第二时间段。 蜂窝网络可以响应于在第二时间段内确定第二前提条件，例如在终止UE和蜂窝网络之间的专用承载的建立不被满足而取消邀请。
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公开(公告)号：US09380643B2
公开(公告)日：2016-06-28
申请号：US14180520
申请日：2014-02-14
Applicant: Apple Inc.
Inventor： Li Su , Yingjie Zhao , Si Li
CPC classification number: H04W88/06 , H04W72/0413
Abstract: Improving uplink behavior for a user equipment (UE) having a radio capable of communicating using at least a first radio access technology (RAT) and a second RAT. The UE may be configured to use the radio for both the first RAT and the second RAT. The UE may receive a first uplink grant corresponding to the first RAT. Prior to completing a process corresponding to the first uplink grant for the first RAT, the UE may communicate using the second RAT. After communicating using the second RAT, the UE may transmit an uplink request for the first RAT instead of completing the process corresponding to the first uplink grant.
Abstract translation: 改善具有能够使用至少第一无线电接入技术（RAT）和第二RAT进行通信的无线电的用户设备（UE）的上行链路行为。 UE可以被配置为对于第一RAT和第二RAT都使用无线电。 UE可以接收对应于第一RAT的第一上行链路许可。 在完成与第一RAT的第一上行链路授权相对应的过程之前，UE可以使用第二RAT进行通信。 在使用第二RAT进行通信之后，UE可以发送用于第一RAT的上行链路请求，而不是完成与第一上行链路授权相对应的处理。
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10.发明授权公开(公告)号：US08958799B2
公开(公告)日：2015-02-17
申请号：US13777454
申请日：2013-02-26
Applicant: Apple Inc.
Inventor： Sarma V. Vangala , Samy Khay-Ibbat , Si Li , Sreevalsan Vallath , Swaminathan Balakrishnan , Tahir Shamim , Tarik Tabet , Wael S. Barakat , Wanping Zhang
Abstract: User Equipment (UE) based forced inter radio access technology (iRAT) handover. A connection to a network may be established via a first cell operating according to a first radio access technology (RAT). It may be determined to initiate a handover of the UE from the first cell to a second cell operating according to a second RAT. An indication may be transmitted to the network to initiate a handover of the UE from the first cell to the second cell. An indication may be received from the network to perform handover of the UE from the first cell to the second cell in response to the indication to initiate the handover. Handover of the UE from the first cell to the second cell may be performed in response to the indication to perform the handover. Handover may include releasing the connection to the network via the first cell and establishing a connection to the network via the second cell.
Abstract translation: 基于用户设备（UE）的强制无线接入技术（iRAT）切换。 可以经由根据第一无线电接入技术（RAT）操作的第一小区来建立到网络的连接。 可以确定发起UE从第一小区到根据第二RAT操作的第二小区的切换。 可以向网络发送指示以发起UE从第一小区到第二小区的切换。 可以响应于启动切换的指示，从网络接收指示以执行UE从第一小区到第二小区的切换。 可以响应于执行切换的指示来执行UE从第一小区到第二小区的切换。 切换可以包括经由第一小区释放到网络的连接，并经由第二小区建立到网络的连接。
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