Method for transmitting and receiving packets to support internet handover service in wired and wireless combined network
First Claim
1. A method of transmitting and receiving packets for an internet handover service in a wired and wireless combined network, wherein the internet handover service is implemented under a communication environment having a plurality of wireless private networks that use a public network as a backbone, a wireless terminal connected to any one of the wireless private networks, a plurality of wired private networks, and a wired terminal connected to any one of the wired private networks, the method comprising:
- (a) the wireless terminal receiving an allocated private IP address from any one of the wireless private networks;
(b) the wired terminal receiving an allocated private IP address from any one of the wired private networks; and
(c) the wireless terminal and the wired terminal each forming an option field of a multi layer IP packet by using the wireless and the wired private IP addresses and a public IP address which is allocated from the public network to each of the wireless and wired private networks, and transmitting and receiving the multi layer IP packet for communication.
1 Assignment
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Accused Products
Abstract
The present invention relates to a method for internet protocol addressing and packet processing for an internet handover service in a wired and wireless combined network. More specifically, the present invention relates to a method for transmitting and receiving packets in a wired and wireless combined network so as to enable IP addressing and packet transmission when a user accesses a public internet network through a private internet provider. Moreover, the method according to the present invention may satisfy requirements to be supported under a mobile communication environment such as fixed IP assignment for internet connection, handover, and tunneling etc., by MLIP address.
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Citations
9 Claims
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1. A method of transmitting and receiving packets for an internet handover service in a wired and wireless combined network, wherein the internet handover service is implemented under a communication environment having a plurality of wireless private networks that use a public network as a backbone, a wireless terminal connected to any one of the wireless private networks, a plurality of wired private networks, and a wired terminal connected to any one of the wired private networks, the method comprising:
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(a) the wireless terminal receiving an allocated private IP address from any one of the wireless private networks;
(b) the wired terminal receiving an allocated private IP address from any one of the wired private networks; and
(c) the wireless terminal and the wired terminal each forming an option field of a multi layer IP packet by using the wireless and the wired private IP addresses and a public IP address which is allocated from the public network to each of the wireless and wired private networks, and transmitting and receiving the multi layer IP packet for communication. - View Dependent Claims (2, 3)
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4. A method for processing transmission of a multi layer IP packet through an internet service between a wireless terminal belonging to a wireless private network that uses a public network as a backbone and a wired terminal belonging to a wired private network, the method comprising:
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(a) a transmission part adding header information into a TCP/UDP payload for data transmission and confirming a public IP address of the public network and a private IP address of the private network, each network belonging to the transmission part, and confirming a public IP address of the public network and a private IP address of the private network, each network belonging to a reception part;
(b) the transmission part recording a source public IP address and a destination public IP address confirmed in (a) into a source address field and a destination address field of an IP packet to be respectively transmitted, and recording the source private IP address and the destination private IP address confirmed in (a) into an option field of the IP packet;
(c) calculating a checksum of a TCP/UDP header by using the source public IP address and the destination public IP address, and recording the checksum into a checksum field; and
(d) comparing the source public IP address with the destination public IP address, interchanging the destination public IP address with the destination private IP address when the two public addresses are the same, calculating and recording the checksum of the total IP packet, and transmitting the IP packet into the reception part. - View Dependent Claims (5)
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6. A method for processing reception of a multi layer IP packet through an internet service between a wireless terminal belonging to a wireless private network that uses a public network as a backbone and a wired terminal belonging to a wired private network, the method comprising:
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(a) the reception part receiving an IP packet, calculating a checksum of the IP packet, and determining whether a checksum error exists;
(b) the reception part determining whether a public IP address of itself is the same as a reception public IP address when a checksum error does not exist in (a), and confirming whether a destination private IP address exists in the IP packet when the two IP addresses are the same;
(c) the reception part interchanging a destination public IP address with a destination private IP address when it is determined that the destination private IP address exists in the IP packet in (b), confirming whether the interchanged destination public IP address is the same as the public IP address of itself, and determining whether a source private IP address exists in the IP packet when the two public IP addresses are the same; and
(d) interchanging a source public IP address with the source private IP address when it is determined in (c) that the source private IP address exists in the IP packet, and performing packet processing in accordance with properties of the IP packet. - View Dependent Claims (7, 8, 9)
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Specification