NETWORK SYSTEM, OFFLOAD APPARATUS AND TRAFFIC CONTROL METHOD FOR NETWORK SYSTEM
First Claim
1. A network system comprising:
- a first and second radio base station apparatuses which are connectable with a mobile station apparatus;
a first network which accommodates the first and second radio base station apparatuses;
a first offload apparatus which relays packet data transmitted between the first radio base station apparatus and the first network, and transmits to a second network a portion of packet data transmitted from the first radio base station apparatus after rewriting a first address of the mobile station apparatus with a second address, or transmits to the first radio base station apparatus packet data received from the second network after rewriting the second address with the first address; and
a second offload apparatus, whereinthe first offload apparatus includes a first control unit which transmits the second address to the second offload apparatus intervened between the second radio base station apparatus and the first network, when the mobile station apparatus changes over connection from the first radio base station apparatus to the second radio base station apparatus, andthe second offload apparatus includes a second control unit which receives the second address.
1 Assignment
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Accused Products
Abstract
A network system including: a first and second radio base station apparatuses which are connectable with a mobile station apparatus; a first network which accommodates the first and second radio base station apparatuses; a first offload apparatus which relays packet data, and transmits to a second network a portion of packet data transmitted from the first radio base station apparatus after rewriting a first address of the mobile station apparatus with a second address, or transmits to the first radio base station apparatus packet data received from the second network after rewriting the second address with the first address; and a second offload apparatus, wherein the first offload apparatus includes a first control unit which transmits the second address to the second offload apparatus, and the second offload apparatus includes a second control unit which receives the second address.
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Citations
15 Claims
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1. A network system comprising:
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a first and second radio base station apparatuses which are connectable with a mobile station apparatus; a first network which accommodates the first and second radio base station apparatuses; a first offload apparatus which relays packet data transmitted between the first radio base station apparatus and the first network, and transmits to a second network a portion of packet data transmitted from the first radio base station apparatus after rewriting a first address of the mobile station apparatus with a second address, or transmits to the first radio base station apparatus packet data received from the second network after rewriting the second address with the first address; and a second offload apparatus, wherein the first offload apparatus includes a first control unit which transmits the second address to the second offload apparatus intervened between the second radio base station apparatus and the first network, when the mobile station apparatus changes over connection from the first radio base station apparatus to the second radio base station apparatus, and the second offload apparatus includes a second control unit which receives the second address. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An offload apparatus for relaying packet data transmitted between a radio base station apparatus connectable to a mobile station apparatus and a first network accommodated the radio base station apparatus, and transmitting a portion of packet data transmitted from the first radio base station apparatus, to a second network after rewriting a first address of the mobile station apparatus with a second address, or transmitting packet data received from the second network to the radio base station apparatus after rewriting the second address with the first address, the offload apparatus comprising:
a control unit which transmits the second address to another offload apparatus intervened between another radio base station apparatus and the first network, when the mobile station apparatus changes over connection from the radio base station apparatus to the other radio base station apparatus.
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14. An offload apparatus intervened between a radio base station apparatus connectable to a mobile station apparatus and a first network accommodated the radio base station apparatus, the offload apparatus comprising:
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a control unit which receives a second address from another offload apparatus, wherein the other offload apparatus relays packet data transmitted between the radio base station apparatus and the first network, and transmits to a second network a portion of packet data transmitted from the other radio base station apparatus after rewriting a first address of the mobile station apparatus with the second address, or transmits to the other radio base station apparatus packet data received from the second network after rewriting the second address with the first address.
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15. A traffic control method in a network system including a first and second radio base station apparatuses connectable to a mobile station apparatus, a first network which accommodates the first and second radio base station apparatuses, a second offload apparatus, and a first offload apparatus which relays packet data transmitted between the first radio base station apparatus and the first network and transmits to a second network portion of packet data transmitted from the first radio base station apparatus after rewriting a first address of the mobile station apparatus with a second address, or transmits to the first radio base station apparatus packet data received from the second network after rewriting the second address with the first address, the traffic control method comprising:
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transmitting the second address to the second offload apparatus which intervenes between the second radio base station apparatus and the first network, when the mobile station apparatus changes over connection from the first radio base station apparatus to the second radio base station apparatus, by the first offload apparatus; and receiving the second address, by the second offload apparatus.
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Specification