Determination of radio link failure with enhanced interference coordination and cancellation
First Claim
1. A method of wireless communication, comprising:
- detecting interference from an interfering base station in a network supporting an interference coordination and cancellation mechanism that includes a yielding of at least one wireless transmission resource and assignment of the at least one yielded resource from the interfering base station to a serving base station;
receiving a dedicated message identifying a resource yielded by the interfering base station;
determining a signal quality metric of the resource yielded by the interfering base station; and
declaring a radio link failure if the determined signal quality metric has a predetermined numerical relation with a threshold value.
1 Assignment
0 Petitions
Accused Products
Abstract
Existing criteria for analyzing radio link failure conditions may not satisfactorily address the conditions between cells that support cooperative resource coordination. Generally, when the UE declares radio link failure, the UE discontinues communication with a serving base station and searches for a new base station. When the UE lies in a region with severe interference, where the interference is coordinated between base stations by the interfering cell yielding part of its resources, the UE measurements for determining radio link failure (RLF) may vary considerably, depending on whether the measured resources were yielded by the interfering cell. When the UE measures resources which were not yielded by the interfering cell, the UE can erroneously declare RLF (e.g., due to high interference), although the UE can still access the serving cell using resources yielded by the interfering cell. Accordingly, disclosed are aspects for determining RLF based by accounting for cooperative resource coordination employing yielded resources.
-
Citations
21 Claims
-
1. A method of wireless communication, comprising:
-
detecting interference from an interfering base station in a network supporting an interference coordination and cancellation mechanism that includes a yielding of at least one wireless transmission resource and assignment of the at least one yielded resource from the interfering base station to a serving base station; receiving a dedicated message identifying a resource yielded by the interfering base station; determining a signal quality metric of the resource yielded by the interfering base station; and declaring a radio link failure if the determined signal quality metric has a predetermined numerical relation with a threshold value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 21)
-
-
8. A method of wireless communication, comprising:
-
detecting interference from an interfering base station in a network supporting an interference coordination and cancellation mechanism that includes a yielding of at least one wireless transmission resource and assignment of the at least one yielded resource from the interfering base station to a serving base station; receiving a message identifying a resource yielded by the interfering base station, in which the message is at least one of a broadcast message transmitted from the serving base station indicating the resource yielded by the interfering base station, an overhead message transmitted from the interfering base station indicating the resource yielded by the interfering base station, or a combination thereof; determining a signal quality metric of the resource yielded by the interfering base station; and declaring a radio link failure if the determined signal quality metric has a predetermined numerical relation with a threshold value.
-
-
9. An apparatus for wireless communication, comprising:
-
a memory; and at least one processor coupled to the memory, the at least one processor being configured; to detect interference from an interfering base station in a network supporting an interference coordination and cancellation mechanism that includes a yielding of at least one wireless transmission resource and assignment of the at least one yielded resource from the interfering base station to a serving base station; to receive a dedicated message identifying a resource yielded by the interfering base station; to determine a signal quality metric of the resource yielded by the interfering base station; and to declare a radio link failure if the determined signal quality metric has a predetermined numerical relation with a threshold value. - View Dependent Claims (10, 11, 12, 13, 14, 15)
-
-
16. An apparatus for wireless communication, comprising:
-
a memory; and at least one processor coupled to the memory, the at least one processor being configured; to detect interference from an interfering base station in a network supporting an interference coordination and cancellation mechanism that includes a yielding of at least one wireless transmission resource and assignment of the at least one yielded resource from the interfering base station to a serving base station; to receive a message identifying a resource yielded by the interfering base station, in which the message is at least one of a broadcast message transmitted from the serving base station indicating the resource yielded by the interfering base station, an overhead message transmitted from the interfering base station indicating the resource yielded by the interfering base station, or a combination thereof; to determine a signal quality metric of the resource yielded by the interfering base station; and to declare a radio link failure if the determined signal quality metric has a predetermined numerical relation with a threshold value.
-
-
17. A computer program product for wireless communication in a wireless network, comprising:
a non-transitory computer-readable medium having non-transitory program code recorded thereon, the program code comprising; program code to detect interference from an interfering base station in a network supporting an interference coordination and cancellation mechanism that includes a yielding of at least one wireless transmission resource and assignment of the at least one yielded resource from the interfering base station to a serving base station; program code to receive a dedicated message identifying a resource yielded by the interfering base station; program code to determine a signal quality metric of the resource yielded by the interfering base station; and program code to declare a radio link failure if the determined signal quality metric has a predetermined numerical relation with a threshold value.
-
18. A computer program product for wireless communication in a wireless network, comprising:
a non-transitory computer-readable medium having a program code recorded thereon, the program code comprising; program code to detect interference from an interfering base station in a network supporting an interference coordination and cancellation mechanism that includes a yielding of at least one wireless transmission resource and assignment of the at least one yielded resource from the interfering base station to a serving base station; program code to receive a message identifying a resource yielded by the interfering base station, in which the message is at least one of a broadcast message transmitted from the serving base station indicating the resource yielded by the interfering base station, an overhead message transmitted from the interfering base station indicating the resource yielded by the interfering base station, or a combination thereof; program code to determine a signal quality metric of the resource yielded by the interfering base station; and
program code to declare a radio link failure if the determined signal quality metric has a predetermined numerical relation with a threshold value.
-
19. An apparatus for wireless communication, comprising:
-
means for detecting interference from an interfering base station in a network supporting an interference coordination and cancellation mechanism that includes a yielding of at least one wireless transmission resource and assignment of the at least one yielded resource from the interfering base station to a serving base station; means for receiving a dedicated message identifying a resource yielded by the interfering base station; means for determining a signal quality metric of the resource yielded by the interfering base station; and means for declaring a radio link failure if the determined signal quality metric has a predetermined numerical relation with a threshold value.
-
-
20. An apparatus for wireless communication, comprising:
-
means for detecting interference from an interfering base station in a network supporting an interference coordination and cancellation mechanism that includes a yielding of at least one wireless transmission resource and assignment of the at least one yielded resource from the interfering base station to a serving base station; means for receiving a message identifying a resource yielded by the interfering base station, in which the message is at least one of a broadcast message transmitted from the serving base station indicating the resource yielded by the interfering base station, an overhead message transmitted from the interfering base station indicating the resource yielded by the interfering base station, or a combination thereof; means for determining a signal quality metric of the resource yielded by the interfering base station; and means for declaring a radio link failure if the determined signal quality metric has a predetermined numerical relation with a threshold value.
-
Specification