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    • 3. 发明授权
    • Methods and apparatus for efficiently establishing and maintaining a data connection between a mobile station and a wireless network
    • 用于有效地建立和维护移动台与无线网络之间的数据连接的方法和装置
    • US08374121B2
    • 2013-02-12
    • US11181102
    • 2005-07-14
    • Arun MunjeNoushad NaqviJean-Philippe CormierMahmud-Ul HassanThomas Leonard Trevor PlestidKenneth J. Liang
    • Arun MunjeNoushad NaqviJean-Philippe CormierMahmud-Ul HassanThomas Leonard Trevor PlestidKenneth J. Liang
    • H04W4/00
    • H04W28/18H04W76/10H04W76/12
    • One illustrative method for use in efficiently establishing a data connection, such as a Packet Data Protocol (PDP) Context, between a mobile station and a wireless communication network includes the steps of causing at least one data connection request to be transmitted to the wireless network in attempt to establish a data connection between the mobile station and the wireless network; setting a delay timer to an initial value and running the delay timer; if the data connection has not been established in response to transmitting the at least one data connection request, causing at least one subsequent data connection request to be transmitted after expiration of the delay timer set to the initial value; setting the delay timer to a subsequent initial value which is greater than the initial value and running the delay timer; and if the data connection has not been established in response to transmitting the at least one subsequent data connection request, causing at least one other subsequent data connection request to be transmitted after expiration of the delay timer set to the subsequent initial value. This technique continues until the data connection is established with the wireless network, if at all. If a new wireless network is selected during the technique, the process is reset such that the first initial value is again utilized first for the delay timer. Preferably, the technique works in combination with relatively more quick retries implemented in lower radio layer(s) (i.e. the physical, data link, or network layer). Thus, each data connection request may be a plurality of data connection retries which are performed much closer together in time than other retry attempts.
    • 一种用于有效建立数据连接(例如分组数据协议(PDP)上下文)在移动台和无线通信网络之间的数据连接的说明性方法包括以下步骤:使至少一个数据连接请求被发送到无线网络 尝试建立移动台与无线网络之间的数据连接; 将延迟定时器设置为初始值并运行延迟定时器; 如果数据连接尚未建立以响应于发送所述至少一个数据连接请求,则在设置为所述初始值的所述延迟定时器期满之后使至少一个后续数据连接请求被发送; 将延迟定时器设置为大于初始值的后续初始值并运行延迟定时器; 并且如果数据连接尚未建立以响应于发送所述至少一个后续数据连接请求,则在设置为后续初始值的延迟定时器期满之后使至少一个其它后续数据连接请求被发送。 这种技术将持续到数据连接与无线网络建立(如果有的话)。 如果在技术期间选择了新的无线网络,则该过程被重置,使得第一初始值首先被用于延迟定时器。 优选地,该技术与在较低无线电层(即,物理,数据链路或网络层)中实现的相对更快的重试相结合。 因此,每个数据连接请求可以是与其他重试尝试相比在时间上更接近执行的多个数据连接重试。