Systems, methods, and devices with different radio link failure timers based on user equipment speed
First Claim
1. At least one non-transitory computer readable storage medium having stored thereon instructions that, when executed by a computing device, cause the computing device to perform a method, the method comprising:
- receiving configuration information from a base station in a one-to-one message;
configuring a set of radio link failure timers based on a set of speeds of the mobile user device indicated by the configuration information,wherein a radio link failure timer is set for longer when the mobile user device is moving at a high speed than it is when the mobile user device is moving at a low speed;
detecting a radio link quality below a predetermined threshold;
starting the set of radio link failure timers in response to detecting the radio link quality below the predetermined threshold;
after starting the set of radio link failure timers, determining a speed of the mobile user device;
selecting a timer from the set of radio link failure timers based on the current speed of the mobile user device; and
declaring a radio link failure when the radio link failure timer expires.
2 Assignments
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Accused Products
Abstract
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.
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Citations
15 Claims
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1. At least one non-transitory computer readable storage medium having stored thereon instructions that, when executed by a computing device, cause the computing device to perform a method, the method comprising:
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receiving configuration information from a base station in a one-to-one message; configuring a set of radio link failure timers based on a set of speeds of the mobile user device indicated by the configuration information, wherein a radio link failure timer is set for longer when the mobile user device is moving at a high speed than it is when the mobile user device is moving at a low speed; detecting a radio link quality below a predetermined threshold; starting the set of radio link failure timers in response to detecting the radio link quality below the predetermined threshold; after starting the set of radio link failure timers, determining a speed of the mobile user device; selecting a timer from the set of radio link failure timers based on the current speed of the mobile user device; and declaring a radio link failure when the radio link failure timer expires. - View Dependent Claims (2, 3, 4, 5, 6)
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7. At least one non-transitory computer readable storage medium having stored thereon instructions that, when executed by a computing device, cause the computing device to perform a method, the method comprising:
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configuring a set of radio link failure timers based on a set of speeds of the mobile user device indicated by the configuration information, wherein a radio link failure timer is set for longer when the mobile user device is moving at a high speed than it is when the mobile user device is moving at a low speed; starting the set of radio link failure timers based at least in part on the radio link quality below a predetermined threshold; after starting the set of radio link failure timers, selecting a timer from the set of radio link failure timers based on the current speed of the mobile user device. - View Dependent Claims (8)
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9. An apparatus of a user equipment (UE) configured to determine radio link failure, the apparatus comprising:
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a transceiver; and a processor coupled to the transceiver, the processor configured to; receive parameters for a set of timers and indicating which parameters to use for different UE speeds; determine a radio link 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; and declare a radio link failure when the selected timer expires. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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Specification