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公开(公告)号：US20140219151A1
公开(公告)日：2014-08-07
申请号：US14173478
申请日：2014-02-05
Applicant: Apple Inc.
Inventor： Navid Damji , Giri Prassad Deivasigamani , Johnson O. Sebeni , Luciano M. Verger , Madhusudan Chaudhary , Samy Khay-Ibbat , Sarma V. Vangala , Shivesh Makharia , Sree Ram Kodali , Srinivasan Vasudevan , Thanigaivelu Elangovan , Zhu Ji
IPC: H04W52/02
CPC classification number: H04W52/0235 , H04W52/0216 , Y02D70/1262 , Y02D70/1264 , Y02D70/23 , Y02D70/24
Abstract: A method for reducing power consumption in connected mode discontinuous reception is disclosed. The method can include a wireless communication device sending a transmission for a pending HARQ retransmission process and receiving an ACK for the transmission. The method can further include the wireless communication device determining a subset of remaining uplink transmission opportunities in the pending HARQ retransmission process to monitor for an uplink grant in response to receiving the ACK and monitoring the subset of remaining uplink transmission opportunities for an uplink grant. The method can additionally include the wireless communication device entering a sleep state for any uplink transmission opportunities remaining in the pending HARQ retransmission process after monitoring the subset of remaining uplink transmission opportunities in an instance in which an uplink grant for the pending HARQ retransmission process is not received for any of the subset of remaining uplink transmission opportunities.
Abstract translation: 公开了一种用于降低连接模式不连续接收中的功耗的方法。 该方法可以包括无线通信设备发送用于待决HARQ重传过程的传输并且接收用于传输的ACK。 该方法还可以包括无线通信设备确定待决HARQ重传过程中的剩余上行链路传输机会的子集，以响应于接收到该ACK并监视用于上行链路授权的剩余上行链路传输机会的子集来监视上行链路许可。 该方法可以另外包括无线通信设备进入睡眠状态，用于在等待的HARQ重传过程中保持的任何上行链路传输机会之后监视剩余上行链路传输机会的子集，其中用于未决HARQ重传过程的上行链路许可不在 接收到剩余上行链路传输机会的任何子集。
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公开(公告)号：US20140194086A1
公开(公告)日：2014-07-10
申请号：US14152594
申请日：2014-01-10
Applicant: Apple Inc.
Inventor： Muhammad A. Alam , Giri Prassad Deivasigamani , Gaurav Nukala
CPC classification number: H04W52/0254 , H04W48/16 , H04W48/18 , H04W52/0241 , H04W52/0251 , H04W52/0277 , Y02D70/1224 , Y02D70/1242 , Y02D70/1262 , Y02D70/1264 , Y02D70/142 , Y02D70/144 , Y02D70/146 , Y02D70/164 , Y02D70/168 , Y02D70/23
Abstract: Adaptive out-of-service search behavior by a wireless user equipment (UE) device. The UE may perform cellular communications according to a radio access technology (RAT). It may be determined that cellular service according to the RAT is not available. A search algorithm may be selected from at least two possible search algorithms. A search for cellular service according to the RAT may be performed according to the search algorithm. The various possible search algorithms may specify different ratios of time spent scanning for cellular service to time spent sleeping. The selected search algorithm may be chosen based on any or all of an estimated remaining battery life of the UE, a user activity level, user input, or various other considerations.
Abstract translation: 无线用户设备（UE）设备的自适应失效搜索行为。 UE可以根据无线电接入技术（RAT）来执行蜂窝通信。 可以确定根据RAT的蜂窝服务不可用。 可以从至少两种可能的搜索算法中选择搜索算法。 可以根据搜索算法来执行根据RAT的蜂窝服务的搜索。 各种可能的搜索算法可以指定不同的蜂窝服务扫描时间与花费睡眠时间的不同比率。 所选择的搜索算法可以基于UE估计的剩余电池寿命，用户活动水平，用户输入或各种其它考虑中的任何一个或全部来选择。
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公开(公告)号：US08718649B2
公开(公告)日：2014-05-06
申请号：US13685564
申请日：2012-11-26
Applicant: Apple Inc.
IPC: H04W36/00
Abstract: A method and apparatus for expanded cell search and selection in a mobile wireless device. The mobile device locates cells in a first of neighbor cells and in a second list of stored cells and evaluates located cells using suitability criteria. When locating a suitable first cell that uses a first radio access technology (RAT) in the first list, the first cell is selected. When locating a second suitable cell that uses a second RAT in the first list and not locating a suitable cell that uses the first RAT in the second list, the second cell is selected. When locating a third suitable cell that uses the second RAT in the first list and locating a fourth suitable cell that uses the first RAT in the second list, the fourth cell is selected when more suitable than the third cell.
Abstract translation: 一种用于在移动无线设备中扩展小区搜索和选择的方法和装置。 移动设备将单元定位在相邻小区中的第一个和存储的小区的第二列表中，并使用适合性标准来评估定位的小区。 当在第一列表中定位使用第一无线电接入技术（RAT）的合适的第一小区时，选择第一小区。 当在第一列表中定位使用第二RAT的第二合适小区而不是在第二列表中定位使用第一RAT的合适小区时，选择第二小区。 当在第一列表中定位使用第二RAT的第三合适小区并且在第二列表中定位使用第一RAT的第四适合小区时，当比第三小区更合适时选择第四小区。
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公开(公告)号：US20130053093A1
公开(公告)日：2013-02-28
申请号：US13663342
申请日：2012-10-29
Applicant: Apple Inc.
Inventor： Giri Prassad Deivasigamani , Venkatasubramanian Ramasamy , Sharad Garg , Srinivasan Vasudevan
Abstract: A method and apparatus for fast cell selection by a mobile wireless device. The mobile wireless device detects when a first wireless cell fails a set of stored suitability criteria and searches for and locates a set of candidate wireless cells to associate with. The mobile wireless device measures at least one received signal metric for each candidate wireless cell in the set of candidate wireless cells. When a candidate cell in the set of candidate wireless cells is identically the first wireless cell, the mobile wireless device evaluates the suitability of the candidate wireless cell using the stored set of suitability criteria for the first wireless cell and the measured at least one received signal metric for the candidate wireless cell. The mobile wireless communication device associates with the candidate wireless cell when the candidate wireless cell meets the stored set of suitability criteria.
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公开(公告)号：US20230199841A1
公开(公告)日：2023-06-22
申请号：US17697778
申请日：2022-03-17
Applicant: Apple Inc.
Inventor： Sarvesh Kumar Varatharajan , Arun Vijayakumari Mahasenan , Venkateswara Rao Manepalli , Won Soo Kim , Yaranama Venkata Ramana Dass , Giri Prassad Deivasigamani , Anil G Naik , Piyush Kumar Upadhyay
IPC: H04W74/08
CPC classification number: H04W74/0816
Abstract: The present disclosure relates to several techniques for reducing the occurrence of data collisions, which can occur when multiple devices simultaneously transmit data in the same (frequency) channel. For example, a turnaround time in which a device switches from a receive mode of operation to a transmit mode of operation may be reduced based on the device and another device indicating that they are capable of operating with a reduced turnaround. As another example, devices may use learning-based turnaround estimation to determine a turnaround time supported by other devices and utilize the determined turnaround time, for instance, instead of a longer turnaround time. As yet another example, multiple clear channel assessments may be performed before transmitting data. For instance, a first clear channel assessment may be performed during a backoff period, and a second clear channel assessment may be performed afterwards before data is transmitted.
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Patent Agency Ranking
公开(公告)号：US09906332B2
公开(公告)日：2018-02-27
申请号：US14725416
申请日：2015-05-29
Applicant: Apple Inc.
Inventor： Naveen Rawat , Giri Prassad Deivasigamani , Sachin Sane , Sai Sravan Bharadwaj Karri
IPC: H04L1/18
CPC classification number: H04L1/1848 , H04L1/1812
Abstract: A wireless communication system and method are presented for reducing retransmission delays between a UE and an eNB. The UE is configured to establish a communication link to the eNB according to an interface protocol comprising at least a MAC layer and a RLC layer. The RLC layer is notified with at least a PDU data based on input from the MAC layer if no HARQ ACK is received when a maximum retransmission number is reached. A sequence number (SN) of the PDU may then be retransmitted from the RLC layer to the eNB.
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公开(公告)号：US09661531B2
公开(公告)日：2017-05-23
申请号：US14486892
申请日：2014-09-15
Applicant: Apple Inc.
CPC classification number: H04W36/0061 , H04W48/20
Abstract: A method of reselecting a mobile wireless communication device to a network subsystem before initiating a connection with a wireless communication network. A connection request is received by the mobile wireless communication device in response to a user input. Attributes of signals received by the mobile wireless communication device from multiple network subsystems in the wireless communication network are measured over a period of time. The mobile wireless communication device is associated with one of the network subsystems and not associated with other network subsystems. The mobile wireless communication device reselects to one of the network subsystems based on quality metrics generated from the measured received signal attributes. After reselection, the mobile wireless communication device initiates a connection through the reselected network subsystem.
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公开(公告)号：US09629045B2
公开(公告)日：2017-04-18
申请号：US14697531
申请日：2015-04-27
Applicant: Apple Inc.
Inventor： Giri Prassad Deivasigamani , Venkatasubramanian Ramasamy , Sharad Garg , Srinivasan Vasudevan
Abstract: A method and apparatus for fast cell selection by a mobile wireless device. The mobile wireless device detects when a first wireless cell fails a set of stored suitability criteria and searches for and locates a set of candidate wireless cells to associate with. The mobile wireless device measures at least one received signal metric for each candidate wireless cell in the set of candidate wireless cells. When a candidate cell in the set of candidate wireless cells is identically the first wireless cell, the mobile wireless device evaluates the suitability of the candidate wireless cell using the stored set of suitability criteria for the first wireless cell and the measured at least one received signal metric for the candidate wireless cell. The mobile wireless communication device associates with the candidate wireless cell when the candidate wireless cell meets the stored set of suitability criteria.
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公开(公告)号：US09432943B2
公开(公告)日：2016-08-30
申请号：US14152594
申请日：2014-01-10
Applicant: Apple Inc.
Inventor： Muhammad A. Alam , Giri Prassad Deivasigamani , Gaurav Nukala
CPC classification number: H04W52/0254 , H04W48/16 , H04W48/18 , H04W52/0241 , H04W52/0251 , H04W52/0277 , Y02D70/1224 , Y02D70/1242 , Y02D70/1262 , Y02D70/1264 , Y02D70/142 , Y02D70/144 , Y02D70/146 , Y02D70/164 , Y02D70/168 , Y02D70/23
Abstract: Adaptive out-of-service search behavior by a wireless user equipment (UE) device. The UE may perform cellular communications according to a radio access technology (RAT). It may be determined that cellular service according to the RAT is not available. A search algorithm may be selected from at least two possible search algorithms. A search for cellular service according to the RAT may be performed according to the search algorithm. The various possible search algorithms may specify different ratios of time spent scanning for cellular service to time spent sleeping. The selected search algorithm may be chosen based on any or all of an estimated remaining battery life of the UE, a user activity level, user input, or various other considerations.
Abstract translation: 无线用户设备（UE）设备的自适应失效搜索行为。 UE可以根据无线电接入技术（RAT）来执行蜂窝通信。 可以确定根据RAT的蜂窝服务不可用。 可以从至少两种可能的搜索算法中选择搜索算法。 可以根据搜索算法来执行根据RAT的蜂窝服务的搜索。 各种可能的搜索算法可以指定不同的蜂窝服务扫描时间与花费睡眠时间的不同比率。 所选择的搜索算法可以基于UE估计的剩余电池寿命，用户活动水平，用户输入或各种其它考虑中的任何一个或全部来选择。
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20.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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