公开(公告)号：WO2013151787A1

公开(公告)日：2013-10-10

申请号：PCT/US2013/033015

申请日：2013-03-19

Applicant: APPLE INC.

Inventor： NUKALA, Guarav ,  DELVASIGAMANI, Giri, Prassad ,  VASUDEVAN, Srinivasan ,  ALAM, Muhammad, A.

IPC: H04W56/00

CPC classification number: H04W56/0005

Abstract: Methods and apparatus for parameter (e.g., timing) adjustment in a wireless network, in one embodiment, the timing adjustment includes detection and compensation for one or more missed adjustment messages. In one variant, for certain designated events, a client device may ignore a timer expiration, and apply a previously stored timing advance (TA) command. For example, a user equipment (UE) will determine if a TA command has been missed during a measurement gap interval (such as e.g., to perform measurements on an unsynchronized network), and reuse the previous TA command value. Reusing the TA command value introduces negligible error, which can be corrected in existing error correction capabilities (e.g., OFDM cyclic prefixes, etc.).

Abstract translation: 在一个实施例中，无线网络中用于参数（例如，定时）调整的方法和装置包括对一个或多个错过调整消息的检测和补偿。 在一个变型中，对于某些指定事件，客户端设备可以忽略定时器期满，并且应用先前存储的定时提前（TA）命令。 例如，用户设备（UE）将确定在测量间隙间隔期间（例如，在非同步网络上执行测量）是否已经丢失了TA命令，并重新使用先前的TA命令值。 重新使用TA命令值引入了可忽略的误差，可以在现有的纠错能力（例如OFDM循环前缀等）中进行纠正。

公开(公告)号：WO2013142524A1

公开(公告)日：2013-09-26

申请号：PCT/US2013/033017

申请日：2013-03-19

Applicant: APPLE INC.

Inventor： NUKALA, Gaurav ,  DEIVASIGAMANI, Giri, Prassad ,  ALAM, Muhammad, A.

IPC: H04W80/06 ,  H04L29/06 ,  H04W88/06

CPC classification number: H04W80/06 ,  H04L47/14 ,  H04L47/32 ,  H04L69/163 ,  H04W76/16 ,  H04W76/34 ,  H04W88/06

Abstract: Methods and apparatus for mitigating data server time-outs in e.g., a hybrid wireless network. In one exemplary embodiment, a client device operating in a hybrid network environment utilizes its knowledge about tune-away periods so as to minimally affect data network operation especially TCP. For example, during periods of data downlink activity, the client device induces some delay in the acknowledgement packets sent back towards the network prior to entering into a tune away period. These delayed acknowledgement packets result in an increased retransmission time out period value thereby reducing the probability of encountering a data server time¬ out. Alternative embodiments are also discussed which preoccupy the network apparatus during these tune away periods so as to also mitigate time- outs during these periods. These mitigation algorithms are useful in both downlink and uplink data transmissions. Apparatus for implementing these methodologies are also disclosed.

Abstract translation: 用于减轻例如混合无线网络中的数据服务器超时的方法和装置。 在一个示例性实施例中，在混合网络环境中操作的客户端设备利用其关于调离周期的知识，以便最小程度上影响数据网络操作，特别是TCP。 例如，在数据下行链路活动的时段期间，客户端设备在进入调谐周期之前，在向网络发回的确认分组中引起一些延迟。 这些延迟确认分组导致增加的重传超时周期值，从而减少遇到数据服务器超时的可能性。 还讨论了另外的实施例，这些实施例在这些调谐时段期间关注网络设备，以便也减轻在这些周期期间的超时。 这些缓解算法在下行链路和上行链路数据传输中都是有用的。 还公开了用于实现这些方法的装置。

公开(公告)号：EP2829147A1

公开(公告)日：2015-01-28

申请号：EP13728849.4

申请日：2013-03-19

Applicant: Apple Inc.

Inventor： NUKALA, Gaurav ,  DEIVASIGAMANI, Giri, Prassad ,  ALAM, Muhammad, A.

IPC: H04W80/06 ,  H04L29/06 ,  H04W88/06

CPC classification number: H04W80/06 ,  H04L47/14 ,  H04L47/32 ,  H04L69/163 ,  H04W76/16 ,  H04W76/34 ,  H04W88/06

Abstract: Methods and apparatus for mitigating data server time-outs in e.g., a hybrid wireless network. In one exemplary embodiment, a client device operating in a hybrid network environment utilizes its knowledge about tune-away periods so as to minimally affect data network operation. For example, during periods of data downlink activity, the client device induces some delay in the acknowledgement packets sent back towards the network prior to entering into a tune away period. These delayed acknowledgement packets result in an increased retransmission time out period value thereby reducing the probability of encountering a data server time-out. Alternative embodiments are also discussed which preoccupy the network apparatus during these tune away periods so as to also mitigate time-outs during these periods. These mitigation algorithms are useful in both downlink and uplink data transmissions. Apparatus for implementing these methodologies are also disclosed.

公开(公告)号：EP2829132A1

公开(公告)日：2015-01-28

申请号：EP13721818.6

申请日：2013-03-19

Applicant: Apple Inc.

Inventor： NUKALA, Guarav ,  DEIVASIGAMANI, Giri, Prassad ,  VASUDEVAN, Srinivasan ,  ALAM, Muhammad, A.

IPC: H04W56/00

CPC classification number: H04W56/0005

Abstract: Methods and apparatus for parameter (e.g., timing) adjustment in a wireless network. In one embodiment, the timing adjustment includes detection and compensation for one or more missed adjustment messages. In one variant, for certain designated events, a client device may ignore a timer expiration, and apply a previously stored timing advance (TA) command. For example, a user equipment (UE) will determine if a TA command has been missed during a measurement gap interval (such as e.g., to perform measurements on an unsynchronized network), and reuse the previous TA command value. Reusing the TA command value introduces negligible error, which can be corrected in existing error correction capabilities (e.g., OFDM cyclic prefixes, etc.).