Systems, methods, and devices with different radio link failure timers based on user equipment speed

摘要

Systems, methods, and device for adjusting an operation time of a radio link failure timer are disclosed herein. User equipment (UE) may be configured to communicatively couple to an evolved Universal Terrestrial Radio Access Network (E-UTRAN). The UE use different radio link failure timer parameters depending on the speed of the UE. The radio link failure timer may run for a longer time for rapidly moving UEs and run for a shorter time for slowly moving UEs. In an embodiment, the UE may scale the radio link failure timer by a scaling factor. In another embodiment, the UE may include multiple radio link failure timers for different speeds. The radio link failure timer parameters for each speed may be specified by the E-UTRAN in a one-to-one communication. The E-UTRAN may determine which parameters to use for each UE based on characteristics of the UE.

主权项

1. User equipment (UE) configured to communicate with an evolved universal terrestrial radio access network (eUTRAN), the UE comprising:
a transceiver; and a processor coupled to the transceiver, the processor configured to:
receive a unicast message from the eUTRAN, the message comprising parameters for a set of timers and indicating which parameters to use for different UE speeds;determine a radio link with the eUTRAN has a quality below a predetermined threshold;configure the set of timers with the parameters for the different UE speeds, wherein the timer is set for longer when the UE is moving at a high speed than it is when the UE is moving at a low speed;start the-set of timers;after starting the set of timers, determine a current speed of the UE;select a timer from the set of timers based on the current speed of the UE; anddeclare a radio link failure when the-selected timer expires.