METHOD OF MOBILITY MANAGEMENT FOR MOBILE TERMINAL IN A HETEROGENEOUS NETWORK ENVIRONMENT
First Claim
1. An operation method of a terminal receiving parameters for Coordinated Multi-point transmission/reception (CoMP) operation in a heterogeneous network environment, comprising, at the terminal, receiving at least one parameter among a CoMP operation mode parameter, a time information parameter regarding a time at which the CoMP operation starts, a point information parameter about points that participate in the CoMP operation, and a CoMP operation parameter, from a base station, through a layer-3 message.
1 Assignment
0 Petitions
Accused Products
Abstract
A method for managing mobility of a terminal in a heterogeneous network environment is provided. According to an aspect, there is provided an operation method of a terminal receiving parameters for Coordinated Multi-point transmission/reception (CoMP) operation in a heterogeneous network environment, the operation method including, at the terminal, receiving at least one parameter among a CoMP operation mode parameter, a time information parameter regarding a time at which the CoMP operation starts, a point information parameter about points that participate in the CoMP operation, and a CoMP operation parameter, from a base station, through a layer-3 message. Therefore, it is possible to avoid an unnecessary ping-pong handover and efficiently provide service continuity.
-
Citations
19 Claims
- 1. An operation method of a terminal receiving parameters for Coordinated Multi-point transmission/reception (CoMP) operation in a heterogeneous network environment, comprising, at the terminal, receiving at least one parameter among a CoMP operation mode parameter, a time information parameter regarding a time at which the CoMP operation starts, a point information parameter about points that participate in the CoMP operation, and a CoMP operation parameter, from a base station, through a layer-3 message.
-
8. An operation method of a terminal performing measurement for Coordinated Multi-point transmission/reception (CoMP) operation, comprising:
-
receiving a periodic measurement report or an aperiodic measurement report from a base station; receiving a message for changing or stopping the periodic measurement report or the aperidic measurement report from the base station; and changing or stopping the periodic measurement report or the aperiodic measurement report in response to the message. - View Dependent Claims (9)
-
-
10. An operation method of a terminal entering or releasing Coordinated Multi-point transmission/reception (CoMP) operation, comprising:
-
receiving parameter information related to a threshold value or a reference value for at least one of a reception signal, a timer, and an event for deciding whether to perform CoMP operation, from a base station; reporting the results of measurement on a reception signal based on the parameter information, to the base station; and receiving a CoMP operation start instruction including information about whether to perform CoMP operation and a CoMP operation mode, decided based on the results of the measurement, from the base station, or receiving a CoMP operation release instruction decided based on the results of the measurement, from the base station. - View Dependent Claims (11, 12)
-
-
13. An operation method of a base station deciding to enter or release Coordinated Multi-point transmission/reception (CoMP) operation, comprising:
-
transmitting parameter information related to a threshold value or a reference value for at least one of a reception signal, a timer, and an event for deciding whether to perform CoMP operation, to a terminal; receiving the results of measurement on a reception signal based on the parameter information, from the terminal; and determining whether to perform CoMP operation and deciding a CoMP operation mode, based on at least one among the results of the measurement, information about a radio channel measured by the base station, a load state of the base station, available transmission power of the base station, and influence of interference of the base station, and transmitting a CoMP operation start instruction including information about whether to perform CoMP operation and a CoMP operation mode, to the terminal, or transmitting a CoMP operation release instruction to the terminal. - View Dependent Claims (14)
-
-
15. An operation method of a terminal performing a handover procedure in a heterogeneous network environment, comprising:
-
receiving information about a measurement period for measuring a neighboring base station, from a base station; measuring an Almost Blank Subframe (ABS) frame and a non-ABS frame of the neighboring base station in the measurement period after distinguishing the ABS frame from the non-ABS frame, and transmitting the results of the measurement to the base station; and receiving a handover execution instruction from the base station based on the results of the measurement, and performing a handover according to the handover execution instruction. - View Dependent Claims (16)
-
-
17. An operation method of a base station performing a handover in a heterogeneous network environment, comprising:
-
transmitting information about a measurement period for measuring a neighboring base station, to a terminal; receiving the results of measurement on an Almost Blank Subframe (ABS) frame and a non-ABS frame of the neighboring base station in the measurement period after distinguishing the ABS frame from the non-ABS frame, from the terminal; and deciding a target base station to which the terminal is to be handed over, based on the results of the measurement, and transmitting a handover execution instruction for a handover to the target base station to the terminal. - View Dependent Claims (18, 19)
-
Specification