Mobility support via routing
First Claim
1. A routing method for enhancing mobility of a mobile station, comprising:
- communicating packets with the mobile station using a first port on a switch and a first repeater coupled to the first port, wherein a media access control (“
MAC”
) layer functionality is split between a switch MAC sublayer associated with the switch and a corresponding first repeater MAC sublayer associated with the first repeater;
changing to use a second port on the switch to communicate with the mobile station, the second port being different than the first port and coupled to a second repeater different than the first repeater and having a corresponding second repeater MAC sublayer, wherein the changing step is accomplished by the switch using the switch MAC sublayer and occurs when the switch determines that the mobile station is closer to the second repeater based on a comparison of received signal strength from duplicate packets received on the first and second repeaters; and
communicating packets with the mobile station using the second port and the second repeater, whereby mobility provisions of IEEE 802.11 protocol are ignored during the changing step.
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Accused Products
Abstract
A communication system is described. In one embodiment, the communication system comprises a mobile station having a transmitter to transmit packets wirelessly according to a protocol and multiple repeaters communicably coupled with the mobile station. Each of the plurality of repeaters receives one or more packets of the wirelessly transmitted packets from the mobile station. Each of the repeaters receives an indication of which of the wirelessly transmitted packets were received without errors by other repeaters and a received signal strength for those packets. The communication system also includes a switch coupled to the repeaters. Each of the repeaters forwards to the switch each packet of the wirelessly transmitted packets that each repeater had received without errors at a received signal strength higher than any other repeater.
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Citations
12 Claims
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1. A routing method for enhancing mobility of a mobile station, comprising:
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communicating packets with the mobile station using a first port on a switch and a first repeater coupled to the first port, wherein a media access control (“
MAC”
) layer functionality is split between a switch MAC sublayer associated with the switch and a corresponding first repeater MAC sublayer associated with the first repeater;changing to use a second port on the switch to communicate with the mobile station, the second port being different than the first port and coupled to a second repeater different than the first repeater and having a corresponding second repeater MAC sublayer, wherein the changing step is accomplished by the switch using the switch MAC sublayer and occurs when the switch determines that the mobile station is closer to the second repeater based on a comparison of received signal strength from duplicate packets received on the first and second repeaters; and communicating packets with the mobile station using the second port and the second repeater, whereby mobility provisions of IEEE 802.11 protocol are ignored during the changing step. - View Dependent Claims (2, 3)
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4. A switch for routing packets to and from a mobile station, comprising:
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means for communicating packets with the mobile station using a first port on the switch and a first repeater coupled to the first port, wherein a media access control (“
MAC”
) layer functionality is split between a switch MAC sublayer associated with the switch and a corresponding first repeater MAC sublayer associated with the first repeater;means for changing to use a second port on the switch to communicate with the mobile station, the second port being different than the first port and coupled to a second repeater different than the first repeater and having a corresponding second repeater MAC sublayer, wherein the changing means is accomplished by the switch using the switch MAC sublayer and includes means for determining that the mobile station is closer to the second repeater and means for changing to use the second port based thereon; and means for communicating packets with the mobile station using the second port and the second repeater, whereby mobility provisions of IEEE 802.11 protocol are ignored during the changing step. - View Dependent Claims (5, 6, 7, 8)
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9. A method for routing mobile stations, comprising:
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exchanging packets with a mobile device through a first repeater using a first port on a switch coupled to the first repeater, wherein a media access control (“
MAC”
) layer functionality is split between a first repeater MAC sublayer and a corresponding switch MAC sublayer;performing, by the switch MAC sublayer, a routing handoff by selecting a second port on the switch, different than the first port, the second port being connected to a second repeater having a second repeater MAC sublayer corresponding to the switch MAC sublayer, wherein the routing handoff occurs when the switch determines that the mobile device is closer to the second repeater based on a comparison of received signal strength from duplicate packets received on the first and second repeaters; and exchanging packets with the mobile device through the second repeater using the second port on the switch, whereby mobility provisions of IEEE 802.11 protocol are ignored during the routing handoff.
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10. An apparatus for routing packets to and from a mobile station, comprising:
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a plurality of repeaters communicably coupled with a first mobile station, wherein each of the plurality of repeaters receives one or more wirelessly transmitted packets from the first mobile station; and a switch coupled to the plurality of repeaters to receive wirelessly transmitted packets from the plurality of repeaters through wired connections between the switch and the plurality of repeaters, wherein a media access control (“
MAC”
) layer functionality is split between a plurality of repeater MAC sublayers and a corresponding switch MAC sublayer,wherein the switch has a port for each of the plurality of repeaters, wherein the switch communicates packets with the first mobile station using a first port on the switch and a first repeater of the plurality of repeaters and subsequently changes to use a second port on the switch to communicate with the first mobile station, the second port being different than the first port and connected to a second repeater different than the first repeater, and wherein the change to the second port is accomplished by the switch using the switch MAC sublayer and occurs when the switch determines that the mobile station is closer to the second repeater based on a comparison of received signal strength from duplicate packets received on the first and second repeaters, whereby mobility provisions of IEEE 802.11 protocol are ignored during the change to the second port. - View Dependent Claims (11, 12)
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Specification