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公开(公告)号：US09247515B2
公开(公告)日：2016-01-26
申请号：US11739674
申请日：2007-04-24
CPC分类号： H04W56/0045 , H04W36/0055
摘要： Techniques for quickly and efficiently performing handover are described. A user equipment (UE) may maintain a link with a serving cell and may communicate with this cell via the established link. The UE may have a candidate set of non-serving cells that are candidates for handover. The UE may maintain uplink synchronization with one or more non-serving cells in the candidate set, without having to maintain links with any of the non-serving cells. The UE may update uplink synchronization with the non-serving cells via an access procedure, e.g., send access probes to the non-serving cells and receive timing adjustments from these cells. One non-serving cell with which the UE has maintained uplink synchronization may be selected as a target cell for handover. The UE may then perform handover from the serving cell to the target cell, without performing uplink synchronization during the handover, which may improve handover latency and success rate.
摘要翻译： 描述用于快速和有效地执行切换的技术。 用户设备（UE）可以维护与服务小区的链路，并且可以经由建立的链路与该小区通信。 UE可以具有作为切换候选的非服务小区的候选集合。 UE可以维护候选集中的一个或多个非服务小区的上行链路同步，而不必维护与任何非服务小区的链路。 UE可以经由接入过程来更新与非服务小区的上行链路同步，例如，向非服务小区发送接入探测，并从这些小区接收定时调整。 UE可以选择保持上行链路同步的一个非服务小区作为切换目标小区。 然后，UE可以执行从服务小区到目标小区的切换，而不需要在切换期间执行上行链路同步，这可以提高切换等待时间和成功率。
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22.发明授权公开(公告)号：US09008655B2
公开(公告)日：2015-04-14
申请号：US13467667
申请日：2012-05-09
CPC分类号： H04W68/02 , H04W48/12 , H04W72/005
摘要： Systems and methodologies are described that facilitate notifying and detecting modification of system information in a wireless communication system. A mobile device may receive a first system information block (SIB) in a first time period, obtain from the first SIB at least one parameter related to modification of at least one SIB, and determine whether to receive the at least one SIB based on the at least one parameter obtained from the first SIB. The mobile device may receive a paging message in a second time period and may determine whether to receive one or more SIBs based on information obtained from the paging message. The mobile device may receive the first SIB in the first time period after entering a cell in an idle mode. The mobile device may receive the paging message in the second time period after accessing the cell.
摘要翻译： 描述了便于在无线通信系统中通知和检测系统信息的修改的系统和方法。 移动设备可以在第一时间段内接收第一系统信息块（SIB），从第一SIB获得与修改至少一个SIB有关的至少一个参数，并且基于所述至少一个SIB来确定是否接收所述至少一个SIB 从第一SIB获得的至少一个参数。 移动设备可以在第二时间段内接收寻呼消息，并且可以基于从寻呼消息获得的信息来确定是否接收一个或多个SIB。 移动设备可以在进入空闲模式的小区之后的第一时间段中接收第一SIB。 移动设备可以在访问小区之后的第二时间段中接收寻呼消息。
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公开(公告)号：US07542444B2
公开(公告)日：2009-06-02
申请号：US11388560
申请日：2006-03-23
IPC分类号： H04Q7/00
CPC分类号： H04W72/042 , H04W28/06
摘要： A scheme is provided for indexing and storing radio bearer configurations for a UMTS wireless communication network, such as a UTRAN. A radio network controller maintains a list of radio bearer configurations and an identifier for each configuration. One or more of these configurations and their identifiers are sent to a mobile terminal in the network. The mobile terminal stores these configurations and identifiers for future reference. This enables an on-the-fly configuration scheme in which the network controller can reference a particular stored configuration by its identifier to cause the mobile terminal to use that configuration to setup wireless transmitter and/or receiver. The identifiers may have contiguous values so that the network controller can transmit a range (e.g., starting identifier and ending identifier) to the mobile terminal rather than each identifier. When a configuration is modified or removed, the network controller may reassign identifiers to maintain contiguous values.
摘要翻译： 提供了一种用于为UMTS无线通信网络（例如UTRAN）索引和存储无线承载配置的方案。 无线电网络控制器维护每个配置的无线承载配置列表和标识符。 这些配置中的一个或多个及其标识符被发送到网络中的移动终端。 移动终端存储这些配置和标识符以供将来参考。 这使得能够实时配置方案，其中网络控制器可以通过其标识符来引用特定存储的配置，以使得移动终端使用该配置来建立无线发射机和/或接收机。 标识符可以具有连续值，使得网络控制器可以向移动终端而不是每个标识符发送范围（例如，起始标识符和结束标识符）。 当配置被修改或删除时，网络控制器可以重新分配标识符以维持连续的值。
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公开(公告)号：US08340664B2
公开(公告)日：2012-12-25
申请号：US12182267
申请日：2008-07-30
摘要： Techniques for performing cell reselection in a wireless communication system are described. A user equipment (UE) may initially camp on a first cell. While camped on the first cell, the UE may identify second and third cells deemed to be better than the first cell. The UE may move from the first cell to the second cell without performing cell reselection to camp on the second cell. After moving to the second cell, the UE may obtain at least one cell reselection parameter for the second and/or third cell and may update the rankings of the second and third cells based on the cell reselection parameter(s). The UE may then perform cell reselection from the first cell to the second or third cell based on the updated rankings, e.g., perform inter-frequency cell reselection from the first cell to the third cell without actually camping on the second cell.
摘要翻译： 描述了在无线通信系统中执行小区重选的技术。 用户设备（UE）可以最初驻留在第一小区上。 当驻留在第一小区时，UE可以识别被认为比第一小区更好的第二和第三小区。 UE可以从第一小区移动到第二小区，而不执行小区重选以驻留在第二小区。 在移动到第二小区之后，UE可以获得用于第二和/或第三小区的至少一个小区重选参数，并且可以基于小区重选参数更新第二和第三小区的排名。 然后，UE可以基于更新的排序来执行从第一小区到第二或第三小区的小区重选，例如，在没有实际驻留在第二小区上的情况下执行从第一小区到第三小区的频率间小区重选。
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25.发明授权公开(公告)号：US08180335B2
公开(公告)日：2012-05-15
申请号：US12350832
申请日：2009-01-08
CPC分类号： H04W68/02 , H04W48/12 , H04W72/005
摘要： Systems and methodologies are described that facilitate notifying and detecting system information block (SIB) modification in subsequent modification periods. Access points can advertise information in a current SIB indicating a subsequent modification period in which the SIB will be modified. Devices can receive the SIB and process the information to determine whether the SIB will be modified and in which modification period. This mitigates undesirable affects of utilizing paging to indicate SIB modification since devices read the SIB upon entering a cell, switching from active to idle mode, etc.
摘要翻译： 描述了便于在随后的修改周期中通知和检测系统信息块（SIB）修改的系统和方法。 接入点可以在当前SIB中通告信息，指示将修改SIB的后续修改周期。 设备可以接收SIB并处理信息以确定是否修改SIB以及修改期。 这减轻了利用寻呼来指示SIB修改的不良影响，因为设备在进入单元，从主动切换到空闲模式等时读取SIB，
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26.发明申请公开(公告)号：US20090181661A1
公开(公告)日：2009-07-16
申请号：US12350832
申请日：2009-01-08
IPC分类号： H04M3/00
CPC分类号： H04W68/02 , H04W48/12 , H04W72/005
摘要： Systems and methodologies are described that facilitate notifying and detecting system information block (SIB) modification in subsequent modification periods. Access points can advertise information in a current SIB indicating a subsequent modification period in which the SIB will be modified. Devices can receive the SIB and process the information to determine whether the SIB will be modified and in which modification period. This mitigates undesirable affects of utilizing paging to indicate SIB modification since devices read the SIB upon entering a cell, switching from active to idle mode, etc.
摘要翻译： 描述了便于在随后的修改周期中通知和检测系统信息块（SIB）修改的系统和方法。 接入点可以在当前SIB中通告信息，指示将修改SIB的后续修改周期。 设备可以接收SIB并处理信息以确定是否修改SIB以及修改期。 这减轻了利用寻呼来指示SIB修改的不良影响，因为设备在进入单元，从主动切换到空闲模式等时读取SIB，
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公开(公告)号：US20090041247A1
公开(公告)日：2009-02-12
申请号：US12186430
申请日：2008-08-05
申请人： Peter Anthony Barany , Arnaud Meylan , Sai Yiu Ho , Francesco Grilli , Nathan Edward Tenny , Rashid Ahmed Akbar Attar
发明人： Peter Anthony Barany , Arnaud Meylan , Sai Yiu Ho , Francesco Grilli , Nathan Edward Tenny , Rashid Ahmed Akbar Attar
IPC分类号： H04K1/00
摘要： Systems and methodologies are described that facilitate identifying a plurality of keysets utilized in a communications network. The keysets can include ciphering keys that provide data encryption and decryption and integrity keys that provide data integrity protection. A key identifier can be included in a packet data convergence protocol header that indicates a keyset employed in connection with data in a protocol data unit. In addition, a route indicator can be provided in a radio link control header that distinguishes a source cell and a target cell in networks configured without RLC reset.
摘要翻译： 描述了便于识别在通信网络中使用的多个键组的系统和方法。 密钥组可以包括提供数据加密和解密的加密密钥以及提供数据完整性保护的完整性密钥。 密钥标识符可以被包括在指示与协议数据单元中的数据相关联地使用的密钥集的分组数据会聚协议报头中。 此外，可以在无RLC链路控制头中提供路由指示符，该无线链路控制头在区分不配置RLC复位的网络中的源小区和目标小区。
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28.发明授权Handover in a wireless data packet communication system that avoid user data loss 失效在无线数据分组通信系统中切换，避免用户数据丢失公开(公告)号：US08451795B2
公开(公告)日：2013-05-28
申请号：US12187255
申请日：2008-08-06
申请人： Sai Yiu Duncan Ho , Arnaud Meylan , Peter Anthony Barany , Francesco Grilli , Nathan Edward Tenny , Rashid Ahmed Akbar Attar
发明人： Sai Yiu Duncan Ho , Arnaud Meylan , Peter Anthony Barany , Francesco Grilli , Nathan Edward Tenny , Rashid Ahmed Akbar Attar
IPC分类号： H04W36/02
CPC分类号： H04W36/02 , H04L1/1874 , H04L1/1896 , H04L2001/0092 , H04W36/0033
摘要： An apparatus, method, processor(s), and computer program product avoids user data loss by network-controlled, user equipment assisted handover in a wireless data packet communication system. A wireless receiver receives radio link control (RLC) packet data units (PDUs) from user equipment (UE) being served by a source node. A wireless transmitter commands the UE to handover. A network communication interface transmits RLC Uplink (UL) context from the source node to the target node, and transmits RLC Downlink (DL) initialization message and buffered in-transit DL RLC PDUs from the source node to the target node.
摘要翻译： 一种装置，方法，处理器和计算机程序产品通过无线数据分组通信系统中的网络控制的用户设备辅助切换来避免用户数据丢失。 无线接收机从由源节点服务的用户设备（UE）接收无线链路控制（RLC）分组数据单元（PDU）。 无线发射机命令UE进行切换。 网络通信接口将RLC上行链路（UL）上下文从源节点发送到目标节点，并将RLC下行链路（DL）初始化消息和缓冲的传输中的DL RLC PDU从源节点发送到目标节点。
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29.发明授权Layer 2 tunneling of data during handover in a wireless communication system 失效在无线通信系统中的切换期间的数据的二层隧道化公开(公告)号：US08437306B2
公开(公告)日：2013-05-07
申请号：US12187539
申请日：2008-08-07
申请人： Rashid Ahmed Akbar Attar , Arnaud Meylan , Sai Yiu Duncan Ho , Francesco Grilli , Nathan Edward Tenny , Peter Anthony Barany
发明人： Rashid Ahmed Akbar Attar , Arnaud Meylan , Sai Yiu Duncan Ho , Francesco Grilli , Nathan Edward Tenny , Peter Anthony Barany
IPC分类号： H04W4/00
摘要： Techniques for sending data during handover with Layer 2 tunneling are described. In one design, a user equipment (UE) sends first Layer 2 packets to a source base station prior to handover to a target base station. The UE sends at least one second Layer 2 packet to the target base station, which identifies the second Layer 2 packet(s) as being intended for the source base station and thus forwards the second Layer 2 packet(s) to the source base station via a Layer 2 tunnel. The UE sends third Layer 2 packets to the target base station after the handover. The target base station processes the third Layer 2 packets to obtain IP packets and sends the IP packets to a serving gateway after a trigger condition, which may be defined to achieve in-order delivery of IP packets from the source and target base stations to the serving gateway.
摘要翻译： 描述用于在第二层隧道切换期间发送数据的技术。 在一种设计中，用户设备（UE）在切换到目标基站之前将第一层2分组发送到源基站。 UE向目标基站发送至少一个第二层2分组，目标基站将第二层分组标识为源基站，从而将第二层分组转发到源基站 通过二层隧道。 移交后，UE向目标基站发送第三层报文。 目标基站处理第三层数据包以获得IP数据包，并在触发条件之后将IP数据包发送到服务网关，触发条件可以被定义为实现从源和目标基站到IP地址的IP分组的按顺序传送 服务网关。
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30.发明申请公开(公告)号：US20130064225A1
公开(公告)日：2013-03-14
申请号：US13674350
申请日：2012-11-12
IPC分类号： H04W36/08
CPC分类号： H04L63/068 , H04L63/108 , H04W12/04 , H04W36/08
摘要： Systems and methodologies are provided that facilitate security activation for wireless communications. In an aspect, a method for wireless communication is provided which includes determining a first security key for communicating with a source access point and receiving, from the source access point, a handover command that includes an indication of whether to apply a second security key upon handover. The method also includes handing over communication from the source access point to a target access point, where the second security key is applied for communicating with the target access point upon the handover when the handover command indicates to apply the second security key.
摘要翻译： 提供了有助于无线通信的安全激活的系统和方法。 一方面，提供了一种用于无线通信的方法，其包括确定用于与源接入点进行通信的第一安全密钥，并且从源接入点接收切换命令，该切换命令包括是否应用第二安全密钥的指示 交出。 所述方法还包括将来自源接入点的通信切换到目标接入点，其中当切换命令指示应用第二安全密钥时，第二安全密钥被应用于在切换时与目标接入点进行通信。
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