Enhanced transmission of critical data
First Claim
Patent Images
1. Method for use in a packet-based communication between two end points (12, 18;
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50, 62) in a communication network during which a plurality of packets are communicated at least in part over a wireless link (16;
66) with reliable transmission provided by layer of said end points above a link layer, characterized byidentifying (36) or recognizing (79a) a packet as a special packet at an end point (12, 14, 60, 62) of said wireless link, and by applying special treatment (42;
89) to said special packet at a link layer of said end point of said wireless link to ensure said reliable transmission is enhanced for said special packet over said wireless link and with said reliable transmission otherwise provided normally by said layer above the link layer to said plurality of packets, without said link layer enhancement.
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0 Petitions
Accused Products
Abstract
The link layer (68, 64) of the sending end of a wireless link (66) is enhanced (10, 74) by providing a mechanism for discriminating (36, 38; 79, 82) between special, critical or otherwise important packets from among a plurality of packets send over the wireless link. Special link layer treatment (42; 89) is accorded to such special, critical or otherwise important packets, while the remaining packets are subjected to normal link layer treatment (44; 86) before transmission over the wireless link.
106 Citations
14 Claims
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1. Method for use in a packet-based communication between two end points (12, 18;
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50, 62) in a communication network during which a plurality of packets are communicated at least in part over a wireless link (16;
66) with reliable transmission provided by layer of said end points above a link layer, characterized byidentifying (36) or recognizing (79a) a packet as a special packet at an end point (12, 14, 60, 62) of said wireless link, and by applying special treatment (42;
89) to said special packet at a link layer of said end point of said wireless link to ensure said reliable transmission is enhanced for said special packet over said wireless link and with said reliable transmission otherwise provided normally by said layer above the link layer to said plurality of packets, without said link layer enhancement.- View Dependent Claims (2, 3)
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50, 62) in a communication network during which a plurality of packets are communicated at least in part over a wireless link (16;
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4. Method for use in a packet-based communication between two end points (12, 18;
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50, 62) in a communication network during which a plurality of packets are communicated at least in part over a wireless link (16;
66), characterized byidentifying (36) or recognizing (79a) a packet as a special packet at an end point (12, 14, 60, 62) of said wireless link, by applying special treatment (42;
89) to said special packet at said end point of said wireless link to ensure reliable transmission over said wireless link, said identifying or recognizing comprising recognizing (79) said special packet at a link layer (74) of said endpoint (60) and by controlling (79a) said link layer of said endpoint for applying said special treatment (89) to said special packet at said link layer, and said identifying or recognizing comprising identifying or recognizing said special packet by timing arrivals of packets having a same characteristic code associated therewith and identifying or recognizing a packet having said code arriving a selected period after arrival of last packet having said code as said special packet.
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50, 62) in a communication network during which a plurality of packets are communicated at least in part over a wireless link (16;
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5. Device for use in a packet-based communication between two end points (12, 18;
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50, 62) in a communication network during which a plurality of packets are communicated at least in part over a wireless link (16;
66) with reliable transmission normally provided by transport layers of said end points, characterized bymeans (22a;
79) for identifying or recognizing a packet as a special packet at an end point (12, 14, 60, 62) of said wireless link, and bymeans (42;
89) for applying special treatment to said special packet at a link layer of said end point of said wireless link to ensure said reliable transmission is enhanced for said special packet over said wireless link and with said reliable transmission otherwise provided normally by said transport layers to said plurality of packets without said link layer enhancement.- View Dependent Claims (6, 7)
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50, 62) in a communication network during which a plurality of packets are communicated at least in part over a wireless link (16;
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8. Device for use in a packet-based communication between two end points (12, 18;
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50, 62) in a communication network during which a plurality of packets are communicated at least in part over a wireless link (16;
66), characterized bymeans (22a;
79) for identifying or recognizing a packet as a special packet at an end point (12, 14, 60, 62) of said wireless link, and bymeans (42;
89) for applying special treatment to said special packet at said end point of said wireless link to ensure reliable transmission over said wireless link,wherein said identifying or recognizing comprises recognizing (79) said special packet at a link layer (74) of said endpoint (60) and for controlling (79a) said link layer of said endpoint to apply said special treatment (89) to said special packet at said link layer, wherein said recognizing comprises recognizing said special packet by timing arrivals of packets having a same characteristic code associated therewith and identifying a packet having said code arriving a selected period after arrival of a last packet having said code as said special packet.
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50, 62) in a communication network during which a plurality of packets are communicated at least in part over a wireless link (16;
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9. System having a pair of hosts (12, 18;
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62, 50) communicating packets in an end-to-end application (8;
49) over communication links (16, 20;
66, 58) including a wireless link (16;
66) with reliable transmission of said packets provided end-to-end by transport layers of said hosts, said wireless link having a mobile host (12;
62) at one end and an access network (14;
60) at another end, characterized by an enhancement (10;
74) in a link layer (24;
64) at an end of said wireless link for providing special link layer treatment (42;
89) to a packet identified as a special packet for ensuring said reliable transmission is enhanced for said special packet over said wireless link and with said reliable transmission otherwise provided normally end-to-end by said transport layers to said packets, without said link layer enhancement. - View Dependent Claims (10, 11, 12, 13, 14)
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62, 50) communicating packets in an end-to-end application (8;
Specification