Method of transmitting and receiving radio access information in a wireless mobile communications system
AssigneeEvolved Wireless LLC
InventorsSung Jun Park, Young Dae Lee, Sung Duck Chun, Myung Cheul Jung
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Abstract
In a wireless mobile communications system, a method of transmitting and receiving radio access information that allows a faster and an efficient way of establishing a radio connection between a terminal and a target base station while performing a handover for the terminal to a cell of the target base station. The network transmits in advance, the radio access information and the like, to the terminal so that the terminal can be connected with the target cell in a faster manner which minimizes the total time for the handover process.
Claims21
A method of performing a random access procedure in a mobile communications system, the method comprising:
- receiving, by a terminal, a handover command message from a source base station,
- wherein the handover command message includes preamble information for the random access procedure,
- wherein the preamble information is a specific preamble used only for a specific terminal, and
- wherein the specific preamble is determined by a target base station;
- and
- performing, by the terminal, the random access procedure with the target base station using the specific preamble.
A method of performing a random access procedure in a mobile communications system, the method comprising:
- receiving, by a source base station, a handover command message from a target base station,
- wherein the handover command message includes preamble information for the random access procedure,
- wherein the preamble information is a specific preamble used only for a specific terminal, and
- wherein the specific preamble is determined by a target base station;
- and
- transferring, by the source base station, the received handover command message to the specific terminal, wherein the specific preamble is used to perform the random access procedure.
A method of performing a random access procedure in a mobile communications system, the method comprising:
- generating, by a target base station, a handover command message,
- wherein the handover command message includes preamble information for the random access procedure,
- wherein the preamble information is a specific preamble used only for a specific terminal;
- and
- transmitting, by the target base station, the handover command message to a source base station,
- wherein the handover command message is transferred by a source base station to the specific terminal, wherein the specific preamble is used to perform the random access procedure.
A mobile terminal that performs a random access procedure in a mobile communications system, the mobile terminal comprising:
- a radio protocol adapted to receive the handover command message from a source base station, and to perform the random access procedure with a target base station, wherein the handover command message includes preamble information for the random access procedure, wherein the preamble information is a specific preamble used only for a specific terminal, wherein the specific preamble is determined by a target base station, wherein the specific preamble is used to perform the random access procedure.
A method to perform a random access procedure in a mobile communications system comprising:
- receiving, by a terminal, a handover command message from a source base station which has determined that a handover should occur to a target base station, wherein the handover command message includes information related to a preamble for the terminal previously defined in a handover confirm message sent from the target base station to the source base station;
- in response to the handover command message, performing, by the terminal, a random access procedure with the target base station to connect with the target base station using the information related to the preamble;
- and
- transmitting, by the terminal, a handover complete message to the target base station.
A mobile terminal to transmit uplink data in a wireless communication system, the mobile terminal comprising:
- a transceiver configured to transmit the uplink data;
- a memory configured to store the uplink data;
- and
- a processor cooperating with the transceiver and the memory, the processor configured to:
- receive a handover command message from a source base station which has determined that a handover should occur to a target base station;
- wherein the handover command message includes information related to a preamble for the terminal previously defined in a handover confirm message sent from the target base station to the source base station;
- in response to the handover command message, perform, by the terminal, a random access procedure with the target base station to connect with the target base station using the information related to the preamble;
- and
- transmit a handover complete message to the target base station.
Dependencies are inferred from the claim text.