Cell selection for a high speed scenario
AssigneeQUALCOMM Incorporated
InventorsMing YANG, Tom CHIN
Life of this patent
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Abstract
A method of wireless communication at a user equipment (UE) includes determining whether a user equipment (UE) is traveling faster than a predetermined speed and determining whether a current serving frequency is dedicated, based on whether the UE is traveling faster than the predetermined speed and/or whether a high-speed flag is set in a received message. The method also includes periodically searching a dedicated frequency from a dedicated frequency list to detect a dedicated cell with a signal quality above a predetermined threshold and switching to the dedicated cell, when the signal quality of the dedicated cell is above the predetermined threshold.
Claims28
A method of wireless communication, comprising:
- determining whether a user equipment (UE) is traveling faster than a predetermined speed;
- determining whether a current serving frequency is dedicated, based on whether the UE is traveling faster than the predetermined speed and/or whether a high-speed flag is set in a received message, in which the serving frequency is dedicated when the serving frequency is exclusive for use in a high-speed transportation system and does not have a neighbor frequency relationship configured with a public, non-dedicated frequency;
- periodically searching a dedicated frequency from a dedicated frequency list to detect a dedicated cell with a signal quality above a first predetermined threshold, when the current serving frequency is not dedicated;
- and
- switching to the dedicated cell, when the signal quality of the dedicated cell is above the first predetermined threshold.
An apparatus for wireless communication, comprising:
- a memory;
- and
- at least one processor coupled to the memory and configured:
- to determine whether a user equipment (UE) is traveling faster than a predetermined speed;
- to determine whether a current serving frequency is dedicated, based on whether the UE is traveling faster than the predetermined speed and/or whether a high-speed flag is set in a received message, in which the serving frequency is dedicated when the serving frequency is exclusive for use in a high-speed transportation system and does not have a neighbor frequency relationship configured with a public, non-dedicated frequency;
- to periodically search a dedicated frequency from a dedicated frequency list to detect a dedicated cell with a signal quality above a first predetermined threshold, when the current serving frequency is not dedicated;
- and
- to switch to the dedicated cell, when the signal quality of the dedicated cell is above the first predetermined threshold.
An apparatus of a wireless communication, comprising:
- means for determining whether a user equipment (UE) is traveling faster than a predetermined speed;
- means for determining whether a current serving frequency is dedicated, based on whether the UE is traveling faster than the predetermined speed and/or whether a high-speed flag is set in a received message, in which the serving frequency is dedicated when the serving frequency is exclusive for use in a high-speed transportation system and does not have a neighbor frequency relationship configured with a public, non-dedicated frequency;
- means for periodically searching a dedicated frequency from a dedicated frequency list to detect a dedicated cell with a signal quality above a first predetermined threshold, when the current serving frequency is not dedicated;
- and
- means for switching to the dedicated cell, when the signal quality of the dedicated cell is above the first predetermined threshold.
A computer program product for wireless communication, comprising:
- a non-transitory computer-readable medium having encoded thereon program code, the program code comprising:
- program code to determine whether a user equipment (UE) is traveling faster than a predetermined speed;
- program code to determine whether a current serving frequency is dedicated, based on whether the UE is traveling faster than the predetermined speed and/or whether a high-speed flag is set in a received message, in which the serving frequency is dedicated when the serving frequency is exclusive for use in a high-speed transportation system and does not have a neighbor frequency relationship configured with a public, non-dedicated frequency;
- program code to periodically search a dedicated frequency from a dedicated frequency list to detect a dedicated cell with a signal quality above a first predetermined threshold, when the current serving frequency is not dedicated;
- and
- program code to switch to the dedicated cell, when the signal quality of the dedicated cell is above the first predetermined threshold.
Dependencies are inferred from the claim text.