Method and apparatus for performing handover in a digital broadcasting system
First Claim
1. A method for performing handover by a terminal in a digital broadcasting system, the method comprising the steps of:
- measuring strength of a received signal from a serving broadcast transmitter of the digital broadcasting system while receiving a broadcast service from the serving broadcast transmitter, and comparing the measured strength of the received signal with a predetermined reference value;
periodically measuring strength of the received signal while continuously receiving the broadcast service from the serving broadcast transmitter, when the measured strength of the received signal is greater than the reference value;
sending a handover start request message for the broadcasting system to a base station of a mobile communication system when the measured strength of the received signal is less than or equal to the reference value; and
performing a handover from the serving broadcast transmitter to a target broadcast transmitter of the digital broadcasting system, upon receipt of an accept message for the handover start request for the broadcasting system from the base station.
1 Assignment
0 Petitions
Accused Products
Abstract
A method is provided for performing handover by a terminal in a digital broadcasting system. The method includes measuring strength of a received signal from a serving broadcast transmitter while receiving a broadcast service, and comparing the measured strength of the received signal with a predetermined reference value; periodically measuring strength of the received signal while continuously receiving the broadcast service when the measured strength of the received signal is greater than the reference value; sending a handover start request message for the broadcasting system to a base station of a mobile communication system when the measured strength of the received signal is less than or equal to the reference value; and performing handover from the serving broadcast transmitter to a target broadcast transmitter upon receipt of an accept message for the handover start request for the broadcasting system from the base station.
11 Citations
22 Claims
-
1. A method for performing handover by a terminal in a digital broadcasting system, the method comprising the steps of:
-
measuring strength of a received signal from a serving broadcast transmitter of the digital broadcasting system while receiving a broadcast service from the serving broadcast transmitter, and comparing the measured strength of the received signal with a predetermined reference value; periodically measuring strength of the received signal while continuously receiving the broadcast service from the serving broadcast transmitter, when the measured strength of the received signal is greater than the reference value; sending a handover start request message for the broadcasting system to a base station of a mobile communication system when the measured strength of the received signal is less than or equal to the reference value; and performing a handover from the serving broadcast transmitter to a target broadcast transmitter of the digital broadcasting system, upon receipt of an accept message for the handover start request for the broadcasting system from the base station. - View Dependent Claims (2, 3, 4, 5)
-
-
6. A method for supporting a handover of a terminal by a base station of a mobile communication system in a digital broadcasting system, the method comprising the steps of:
-
receiving a request message for requesting a handover of the broadcasting system from the terminal that is receiving a broadcast service from a serving broadcast transmitter of the digital broadcasting system in its own cell coverage; detecting a position of the terminal in response to the request message, and determining whether the terminal is located in a position where it should perform a handover of the broadcasting system, using a predetermined broadcast transmitters'"'"' position map; transmitting an accept message for accepting the handover request to the terminal when it is determined that the terminal is located in the position where it should perform handover of the broadcasting system; and transmitting a reject message for rejecting the handover request to the terminal when it is determined that the terminal is not located in the position where it should perform handover of the broadcasting system. - View Dependent Claims (7, 8, 9, 10, 11)
-
-
12. An apparatus for performing handover by a terminal in a digital broadcasting system, the apparatus comprising:
-
a signal strength measurer for receiving a broadcast service signal from a serving broadcast transmitter of the digital broadcasting system, and measuring strength of the received signal; and a controller configured to carry out steps comprising; comparing the measured strength of the received signal with a predetermined reference value; transmitting a request message for requesting handover of the broadcasting system to a base station of a mobile communication system, to which the terminal belongs when the strength of the received signal is less than the reference value; and performing a handover from the serving broadcast transmitter of the digital broadcasting system to a target broadcast transmitter of the digital broadcasting system, upon receipt of an accept response for the handover request for the broadcasting system from the base station. - View Dependent Claims (13, 14, 15, 16, 17)
-
-
18. An apparatus for supporting handover of a terminal by a base station of a mobile communication system in a digital broadcasting system, the apparatus comprising:
-
a transceiver for receiving a request message for requesting handover of the broadcasting system from the terminal in a cell coverage, and transmitting a response message for accepting the handover request to the terminal; a memory for storing a broadcast transmitters'"'"' position map in which positions of adjacent broadcast transmitters are listed; and a controller configured to carry out steps comprising; detecting a position of the terminal in response to the request message, determining whether the terminal is located in a position where it should perform handover of the broadcasting system, using the predetermined broadcast transmitters'"'"' position map; transmitting an accept message for accepting the handover request to the terminal via the transceiver when it is determined that the terminal is located in the position where it should perform handover of the broadcasting system; and transmitting a reject message for rejecting the handover request to the terminal via the transceiver when it is determined that the terminal is not located in the position where it should perform handover of the broadcasting system. - View Dependent Claims (19, 20, 21, 22)
-
Specification