Apparatus and method for managing delay for TCP/IP communications in a mobile communication system
First Claim
1. A system for managing a packet transmission delay for Transmission Control Protocol/Internet Protocol (TCP/IP)-based communications in a mobile communication system, comprising:
- a Base Station Controller (BSC) for imposing no delay on a packet directed to a Mobile Station (MS) or a packet transmitted from the MS, if the MS is performing a handover, and imposing a delay on a packet directed to the MS or a packet transmitted from the MS, if the MS is not performing the handover;
the MS for measuring signal strengths of Base Transceiver Stations (BTSs) and requesting the handover;
an old BTS serving the MS, for receiving the handover request from the MS and requesting the handover for the MS to the BSC; and
a new BTS to which the MS performs the handover.
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Accused Products
Abstract
An apparatus and method for managing a packet transmission delay for TCP/IP-based communications in a mobile communication system are provided, in which a BSC imposes no delay on a packet directed to an MS or a packet transmitted from the MS and sends the packet to the MS or corresponding MS, if it is determined that the MS starts to perform a handover during communications with the MS, and delays a packet directed to the MS or a packet transmitted from the MS and sends the delayed packet to the MS or corresponding MS, if it is determined that the MS has completed the handover during the packet transmission with no delay. Advantageously, timeout occurrences caused by too long a time delay are reduced, thereby preventing decreased throughput during the TCP/IP-based handover.
13 Citations
12 Claims
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1. A system for managing a packet transmission delay for Transmission Control Protocol/Internet Protocol (TCP/IP)-based communications in a mobile communication system, comprising:
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a Base Station Controller (BSC) for imposing no delay on a packet directed to a Mobile Station (MS) or a packet transmitted from the MS, if the MS is performing a handover, and imposing a delay on a packet directed to the MS or a packet transmitted from the MS, if the MS is not performing the handover;
the MS for measuring signal strengths of Base Transceiver Stations (BTSs) and requesting the handover;
an old BTS serving the MS, for receiving the handover request from the MS and requesting the handover for the MS to the BSC; and
a new BTS to which the MS performs the handover. - View Dependent Claims (2, 3)
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4. A method for managing a packet transmission delay for Transmission Control Protocol/Internet Protocol (TCP/IP)-based communications in a mobile communication system, comprising:
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delaying a packet directed to a Mobile Station (MS) or a packet transmitted from the MS and sending the delayed packet by a Base Station Controller (BSC);
imposing no delay on a packet directed to the MS or a packet transmitted from the MS and sending the packet by the BSC, if the MS is performing a handover during the transmission; and
delaying a packet directed to the MS or a packet transmitted from the MS and sending the delayed packet by the BSC, if the MS has completed the handover. - View Dependent Claims (5, 6)
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7. A method of a Base Station Controller (BSC) for managing a packet transmission delay for Transmission Control Protocol/Internet Protocol (TCP/IP)-based communications in a mobile communication system, comprising:
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imposing no delay on a packet directed to a Mobile Station (MS) or a packet transmitted from the MS and sending the packet to the MS or corresponding MS, if it is determined that the MS starts to perform a handover during communications with the MS; and
delaying a packet directed to the MS or a packet transmitted from the MS and sending the delayed packet to the MS or corresponding MS, if it is determined that the MS has completed the handover during the packet transmission with no delay. - View Dependent Claims (8, 9)
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10. An apparatus of a Base Station Controller (BSC) for managing a packet transmission delay for Transmission Control Protocol/Internet Protocol (TCP/IP)-based communications in a mobile communication system, comprising:
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a communication module for communicating with other nodes; and
a controller for imposing no delay on a packet directed to a Mobile Station (MS) or a packet transmitted from the MS and sending the packet to the MS or corresponding MS through the communication module, when the MS starts a handover, and delaying a packet directed to the MS or a packet transmitted from the MS and sending the delayed packet to the MS or corresponding MS through the communication module, when the MS has completed the handover during the packet transmission with no delay. - View Dependent Claims (11, 12)
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Specification