Method of transmitting and receiving radio access information in a wireless mobile communications system
DCFirst Claim
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1. A method of transmitting uplink data in a wireless communication system, the method comprising:
- receiving in a terminal from a network, preamble information generated by the network, wherein the preamble information is received via dedicated signaling in downlink,wherein the received preamble information is either a dedicated preamble or an index of the dedicated preamble, and wherein the preamble information is used for performing a random access channel (RACH) procedure, andwherein the dedicated preamble is used for a specific terminal;
transmitting from the terminal to the network, the dedicated preamble on a random access channel (RACH) in uplink;
uplinkreceiving in the terminal, a random access response in response to the transmitted dedicated preamble, wherein the random access response includes at least one of time information for a handover operation, an uplink grant for the handover operation, time information for a downlink data arrival, or a random access preamble identifier; and
transmitting the uplink data to the network using the uplink grant included in the random access response.
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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.
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Citations
41 Claims
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1. A method of transmitting uplink data in a wireless communication system, the method comprising:
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receiving in a terminal from a network, preamble information generated by the network, wherein the preamble information is received via dedicated signaling in downlink, wherein the received preamble information is either a dedicated preamble or an index of the dedicated preamble, and wherein the preamble information is used for performing a random access channel (RACH) procedure, and wherein the dedicated preamble is used for a specific terminal; transmitting from the terminal to the network, the dedicated preamble on a random access channel (RACH) in uplink;
uplinkreceiving in the terminal, a random access response in response to the transmitted dedicated preamble, wherein the random access response includes at least one of time information for a handover operation, an uplink grant for the handover operation, time information for a downlink data arrival, or a random access preamble identifier; and transmitting the uplink data to the network using the uplink grant included in the random access response. - View Dependent Claims (2, 3, 4, 5)
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6. A mobile terminal for transmitting uplink data in a wireless communication system, the mobile terminal comprising:
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a transceiver configured to transmit or receive the uplink data; a memory configured to store the uplink data transmitted or received via the transceiver or from an external source; and a processor cooperating with the transceiver and the memory, the processor configured to; receive, from a network, preamble information generated by the network, wherein the preamble information is received via dedicated signaling in downlink, wherein the preamble information is used for performing a random access channel (RACH) procedure, wherein the received preamble information is either a dedicated preamble or an index of the dedicated preamble, and wherein the dedicated preamble is used for a specific terminal; transmit, to the network, the dedicated preamble on a random access channel (RACH) in uplink; receive a random access response in response to the transmitted dedicated preamble, wherein the random access response includes at least one of time information for a handover operation, an uplink grant for the handover operation, time information for a downlink data arrival, or a random access preamble identifier; and transmit the uplink data to the network using the uplink grant included in the random access response. - View Dependent Claims (7, 8, 9, 10)
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11. A method comprising:
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receiving, by a terminal and after a source base station has determined that a handover should occur to a target base station, synchronization information generated by a transmitter in the source base station in a network, wherein the synchronization information is received via control signaling in a downlink transmission, wherein the synchronization information is used to synchronize the terminal to the network, and wherein the synchronization information is a handover command message from the source base station, wherein the handover command message includes access information, and the access information includes preamble information as identified by the target base station for use by the terminal during a random access procedure with the target base station, wherein the preamble information is a dedicated preamble used only for a specific terminal; and transmitting, by the terminal, and in response to the handover command message, a synchronization signal associated with the synchronization information on a synchronization channel in an uplink transmission, wherein the terminal connects with the target base station during the random access procedure using the preamble information identified by the target base station; and transmitting, by the terminal, a handover complete message to the target base station. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method comprising:
transmitting, by a transmitter in a base station to a terminal, and after a source base station has determined that a handover should occur to a target base station, synchronization information generated by the transmitter in the source base station in a network, wherein the synchronization information is transmitted via control signaling in a downlink transmission to the terminal, wherein the synchronization information is used to synchronize the terminal to the network, and wherein the synchronization information is a handover command message from the source base station, wherein the handover command message includes access information, and the access information includes preamble information as identified by the target base station for use by the terminal during a random access procedure with the target base station, wherein the preamble information is a dedicated preamble used only for a specific terminal, the synchronization information further usable by the terminal, in response to the handover command message, to transmit a synchronization signal associated with the synchronization information on a synchronization channel in an uplink transmission, wherein the terminal can connect with the target base station during the random access procedure using the preamble information identified by the target base station. - View Dependent Claims (22, 23, 24, 25)
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26. A first terminal configured to transmit uplink data to and receive downlink data from a target base station in a network having a plurality of terminals including the first terminal and a source base station, comprising:
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a memory; a processor; a receiver and the processor in the first terminal that receive, after the source base station has determined that a handover should occur to the target base station, synchronization information generated by a transmitter in the source base station in a network, wherein the synchronization information is received via control signaling in a downlink transmission, wherein the synchronization information is used to synchronize the first terminal to the network, and wherein the synchronization information is a handover command message from the source base station, wherein the handover command message includes access information, and the access information includes preamble information as identified by the target base station for use by the first terminal during a random access procedure with the target base station, wherein the preamble information is a dedicated preamble used only for a specific terminal; and a transmitter and the processor in the first terminal that transmit, in response to the handover command message, a synchronization signal associated with the synchronization information on a synchronization channel in an uplink transmission, wherein the first terminal connects with the target base station during the random access procedure using the preamble information identified by the target base station; and the transmitter and the processor in the first terminal further transmitting a handover complete message to the target base station. - View Dependent Claims (27, 28, 29, 30, 31)
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32. A source base station, comprising:
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a memory; a processor; a transceiver, the transceiver configure to; transmit downlink data and receive uplink data; the processor and memory in the source base station configured to; receive the uplink data; generate, after the source base station has determined that a handover should occur to a target base station, synchronization information, wherein the synchronization information is transmitted via control signaling in a downlink transmission to a terminal, wherein the synchronization information is used to synchronize the terminal to a network, and wherein the synchronization information is a handover command message from the source base station, wherein the handover command message includes access information, and the access information includes preamble information as identified by the target base station for use by the terminal during a random access procedure with the target base station, wherein the preamble information is a dedicated preamble used only for a specific terminal. - View Dependent Claims (33, 34, 35, 36, 37)
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38. A non-transitory computer readable medium having instructions thereon that when executed instructions that when executed by at least one processor of a terminal perform a method comprising:
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receiving, by the terminal and after a source base station has determined that a handover should occur to a target base station, synchronization information generated by a transmitter in the source base station in a network, wherein the synchronization information is received via control signaling in a downlink transmission, wherein the synchronization information is used to synchronize the terminal to the network, and wherein the synchronization information is a handover command message from the source base station, wherein the handover command message includes access information, and the access information includes preamble information as identified by the target base station for use by the terminal during a random access procedure with the target base station, wherein the preamble information is a dedicated preamble used only for a specific terminal; and transmitting, by the terminal, and in response to the handover command message, a synchronization signal associated with the synchronization information on a synchronization channel in an uplink transmission, wherein the terminal connects with the target base station during the random access procedure using the preamble information identified by the target base station; and transmitting, by the terminal, a handover complete message to the target base station.
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39. A non-transitory computer readable medium having instructions thereon that when executed by at least one processor of a base station perform a method comprising:
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transmitting downlink data and receive uplink data; and generating, after a source base station has determined that a handover should occur to a target base station, synchronization information, wherein the synchronization information is transmitted via control signaling in a downlink transmission to a terminal, wherein the synchronization information is used to synchronize the terminal to a network, and wherein the synchronization information is a handover command message from the source base station, wherein the handover command message includes access information, and the access information includes preamble information as identified by a target base station for use by the terminal during a random access procedure with the target base station, wherein the preamble information is a dedicated preamble used only for a specific terminal.
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40. A system comprising:
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means for receiving, by a terminal and after a source base station has determined that a handover should occur to a target base station, synchronization information generated by a transmitter in the source base station in a network, wherein the synchronization information is received via control signaling in a downlink transmission, wherein the synchronization information is used to synchronize the terminal to the network, and wherein the synchronization information is a handover command message from the source base station, wherein the handover command message includes access information, and the access information includes preamble information as identified by the target base station for use by the terminal during a random access procedure with the target base station, wherein the preamble information is a dedicated preamble used only for a specific terminal; and means for transmitting, by the terminal and in response to the handover command message, a synchronization signal associated with the synchronization information on a synchronization channel in an uplink transmission, wherein the terminal connects with the target base station during the random access procedure using the preamble information identified by the target base station; and means for transmitting, by the terminal, a handover complete message to the target base station.
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41. A system comprising:
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means for transmitting downlink data and receive uplink data; means for generating, after a source base station has determined that a handover should occur to a target base station, synchronization information, wherein the synchronization information is transmitted via control signaling in a downlink transmission to a terminal, wherein the synchronization information is used to synchronize the terminal to a network, and wherein the synchronization information is a handover command message from the source base station, wherein the handover command message includes access information, and the access information includes preamble information as identified by the target base station for use by the terminal during a random access procedure with the target base station, wherein the preamble information is a dedicated preamble used only for a specific terminal.
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Specification