Methods and apparatus for ecn receiver driven congestion control

Abstract

Certain embodiments relate to systems and methods for managing congestion notification and control across a network. In certain aspects, a protocol for managing sender and receiver-based congestion control is provided using a format for streaming parameters, such as the Session Description Protocol format. In certain aspects, a system and method for operating an interworking gateway between different user devices is provided.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims the benefit under 35 U.S.C. Section 119(e) of co-pending and commonly-assigned U.S. Provisional Patent Application Ser. No. 61 / 390,584, filed on Oct. 6, 2010, entitled “METHODS AND APPARATUS FOR ECN RECEIVER DRIVEN CONGESTION CONTROL” which application is incorporated by reference herein in its entirety.TECHNICAL FIELD[0002]The systems and methods disclosed herein relate generally to data communication systems and particularly to notification regarding congestion in network traffic.BACKGROUND OF THE INVENTION[0003]Wireless communication systems are widely deployed to provide various types of communication content such as voice, data, video and the like, and deployments are likely to increase with introduction of new data oriented systems such as Long Term Evolution (LTE) systems. Wireless communications systems may be multiple-access systems capable of supporting communication with multiple users by sharing the ava...

AI Technical Summary

Benefits of technology

[0011]Certain embodiments contemplate a method of controlling data congestion. The method may comprise: receiving a session description protocol (SDP) offer, the offer specifying one of sender-driven or receiver-driven congestion control; generating an SDP answer, the answer specifying one of sender-driven or receiver-driven congestion control; and sending the SDP answer, the SDP answer comprising a plurality of parameters, wherein one or more of the plurality of parameters indicates congestion control information. The method implemented on a communications device.

[0012]In certain embodiments the SDP offer specifies receiver driven congestion control. In certain embodiments, the method further comprises sending media under receiver driven congestion control. In certain embodiments the SDP offer specifies sender driven congestion control. In certain embodiments the method further comprises sending media under sender driven congestion control. In certain embodiments the communications device is capable of operating in sender-driven or receiver-driven congestion control. In certain embodiments the method further comprises determining a first congestion control for a first direction of flow and a second congestion control for a second direction control, the first congestion control different from the second congestion control. In certain embodiments the congestion control information of the one or more of the plurality of parameters in the SDP answer indicates receiver-driven congestion control. In certain embodiments the congestion control information of the one or more of the plurality of parameters in the SDP answer indicates sender-driven congestion control.

[0013]Certain embodiments contemplate a non-transitory computer-readable medium having stored thereon instructions configured to cause one or more computer systems in a device to control data congestion to: receive a session description protocol (SDP) offer, the offer specifying one of sender-driven or receiver-driven congestion control; generate an SDP answer, the answer specifying one of sender-driven or receiver-driven congestion control; and send the SDP a

Problems solved by technology

This may cause severe inter-cell interference requiring undesirable user equipment cell association.

In general, heterogeneous network characteristics require deep penetration of physical channels which may cause unwanted interference between nodes and equipment on the respective network.

Traditionally, TCP / IP networks signal congestion by dropping packets.

However, when ECN is successfully negotiated, an ECN-aware router may set a mark in the IP header instead of dropping a packet in order to signal impending congestion.

However, if the transport network or devices in it does not properly support ECN functionality, the terminals will have to disable ECN and the UEs will not be able to perform rate adaptation.

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