Method and apparatus for transmitting and receiving system information in a mobile communication system
First Claim
1. A method for receiving system information (SI) by a user equipment (UE) in a mobile communication system, the method comprising:
- receiving, by the UE, the SI including first partial bits of a system frame number (SFN) on a broadcast channel (BCH) at a first subframe of a radio frame, the first partial bits of the SFN having an identical value indicating a reference SFN during a predetermined N successive radio frames of a BCH transmission period, where N is a positive integer; and
acquiring, by the UE, second partial bits of the SFN for the radio frame, the second partial bits of the SFN having different values in each radio frame of the predetermined N successive radio frames of the BCH transmission period, and the second partial bits indicating an offset,wherein the SFN is calculated based on the first partial bits and the second partial bits.
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Abstract
A method and apparatus are provided for transmitting and receiving System Information (SI) in a mobile communication system. The method for receiving the SI by a User Equipment (UE) includes receiving, by the UE, at a fixedly scheduled sub-frame of a predetermined radio frame within a Primary Broadcast CHannel (P-BCH) transmission period, the SI including first partial bits of a System Frame Number (SFN), the first partial bits indicating a repeated value; and acquiring, by the UE, second partial bits of the SFN in the predetermined radio frame by decoding the P-BCH, the second partial bits indicating a different value.
30 Citations
18 Claims
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1. A method for receiving system information (SI) by a user equipment (UE) in a mobile communication system, the method comprising:
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receiving, by the UE, the SI including first partial bits of a system frame number (SFN) on a broadcast channel (BCH) at a first subframe of a radio frame, the first partial bits of the SFN having an identical value indicating a reference SFN during a predetermined N successive radio frames of a BCH transmission period, where N is a positive integer; and acquiring, by the UE, second partial bits of the SFN for the radio frame, the second partial bits of the SFN having different values in each radio frame of the predetermined N successive radio frames of the BCH transmission period, and the second partial bits indicating an offset, wherein the SFN is calculated based on the first partial bits and the second partial bits. - View Dependent Claims (2, 3, 4, 5)
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6. A method for transmitting system information (SI) by a node B in a mobile communication system, the method comprising:
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encoding, by the node B, second partial bits of a system frame number (SFN) in a radio frame, the second partial bits of the SFN having different values in each radio frame of a predetermined N successive radio frames of a broadcast channel (P-BCH) transmission period, where N is a positive integer; and transmitting, by the Node B, the encoded second partial bits of the SFN and the SI including first partial bits of the SFN on a BCH at a first subframe of the radio frame, the first partial bits of the SFN having an identical value indicating a reference SFN during the predetermined N successive radio frames of the BCH transmission period, and the second partial bits indicating an offset, wherein the SFN is calculated based on the first partial bits and the second partial bits. - View Dependent Claims (7, 8, 9)
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10. A user equipment (UE) for receiving system information (SI) in a mobile communication system, the UE comprising:
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a receiver configured to receive the SI including first partial bits of a system frame number (SFN) on a broadcast channel (BCH) at a first subframe of a radio frame, the first partial bits of the SFN having an identical value indicating a reference SFN during a predetermined N successive radio frames of a BCH transmission period, where N is a positive integer; and a controller configured to acquire second partial bits of the SFN for the radio frame, the second partial bits of the SFN having different values in each radio frame of the predetermined N successive radio frames of the BCH transmission period, and the second partial bits indicating an offset, wherein the SFN is calculated based on the first partial bits and the second partial bits. - View Dependent Claims (11, 12, 13, 14)
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15. A node B for transmitting system information (SI) in a mobile communication system, the Node B comprising:
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an encoder configured to encode second partial bits of a system frame number (SFN) in a radio frame, the second partial bits of the SFN having different values in each radio frame of a predetermined N successive radio frames of a broadcast channel (BCH) transmission period, where N is a positive integer; and a transmitter configured to transmit the encoded second partial bits of the SFN and the SI including first partial bits of the SFN on a BCH at a first subframe of the radio frame, the first partial bits of the SFN having an identical value indicating a reference SFN during the predetermined N successive radio frames of the BCH transmission period, and the second partial bit indicating an offset, wherein the SFN is calculated based on the first partial bits and the second partial bits. - View Dependent Claims (16, 17, 18)
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Specification