Method and device for header compression in packet-oriented networks
First Claim
1. A method for header compression in packet-oriented networks, the network including at least one receiver and one transmitter between which information packets are exchanged with of MPLS headers, with the information packets tunneling a further protocol with a network header, with the MPLS header being calculated by bijective function from the network headers, which is configured to map an MPLS header uniquely to the second network header, comprising:
- storing a mapping of the MPLS header to the network header, with a network header being calculated by a bijective function from the MPLS headers, removing from the information packet at least a portion of the network header of the second protocol and filling free space thus obtained with other information, and sending the information packet to the receiver; and
uniquely assigning the network header to the information packet based on the basis of the stored mapping.
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Accused Products
Abstract
The invention relates to a method for header compression in packet-oriented networks, comprising at least one receiver and one transmitter between which information packets are exchanged by means of MPLS headers. Said information packets are tunneled by another protocol by means of a network header. Said MPLS headers are selected, such that a clear representation of a MPLS header an the second network header is possible. Said method comprises a first initialization step, whereby the receiver stores a representation of said MPLS header on the network header. In a second step following said initialization step, the transmitter removes the network header of the second protocol from the information packet and fills in the free space, thus obtained, with other information, in order to then transmit said information packet to the receiver. Said method comprises a third step, whereby the receiver assigns the network header to the information packet, based on the stored representation.
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Citations
25 Claims
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1. A method for header compression in packet-oriented networks, the network including at least one receiver and one transmitter between which information packets are exchanged with of MPLS headers, with the information packets tunneling a further protocol with a network header, with the MPLS header being calculated by bijective function from the network headers,
which is configured to map an MPLS header uniquely to the second network header, comprising: -
storing a mapping of the MPLS header to the network header, with a network header being calculated by a bijective function from the MPLS headers, removing from the information packet at least a portion of the network header of the second protocol and filling free space thus obtained with other information, and sending the information packet to the receiver; and
uniquely assigning the network header to the information packet based on the basis of the stored mapping. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A transmitter in a packet-oriented network, with the network comprising:
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at least one receiver and one transmitter between which information packets are exchanged with she aid of MPLS headers, the information packets tunneling a further protocol with a network header, with the MPLS header being selected so that unique mapping of an MPLS header to the second header is possible, wherein the MPLS header is calculated by a bijective function from the network header and the transmitter features a processing unit which, depending on an event or a state, removes the network header of the second protocol from the information packet and fills the space thus obtained with other information to send the information packet thus modified over a network interface to the receiver. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A receiver in a packet oriented network, comprising:
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at least one receiver and one transmitter, between which information packets are exchanged with aid of MPLS headers, where the information packets tunnel a further protocol with a network header, the MPLS headers being selected so that a unique mapping of an MPLS header to the second network header is possible;
a storage area in which a mapping of the MPLS header to the network header is stored, in which case the network header is calculated by a bijective function from the MPLS header; and
a processing unit which assigns the network header of the second protocol to the information packet which features a corresponding MPLS header. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification