US 11,082,808 B1Granted

Multicast traffic management

AssigneeAmazon Technologies, Inc.

InventorsAshish Kumar Shukla, Avinash Joshi, Binh Tran

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Abstract

Techniques are described for an unbuffered multicast delivery mode representing the capability of transmitting a multicast frame within a same DTIM interval during which the multicast frame is received. In an example, a network access device determines that a first computing device is in a power saving mode. The network access device receives, during a DTIM interval while the first computing device is in the power saving mode, a multicast frame destined to a multicast MAC address. The network access device determines an association between the multicast MAC address and a device MAC address of a second computing device. The network access device sends, during the DTIM interval and based on the association, the multicast frame to the second computing device.

Claims20

Dependent claims

A method implemented by a wireless access point, the method comprising:

transmitting a beacon frame indicating that the wireless access point supports an unbuffered multicast delivery mode, wherein the unbuffered multicast delivery mode represents a capability of transmitting a multicast frame within a same delivery traffic indication map (DTIM) interval during which the multicast frame is received by the wireless access point;
receiving, from a first computing device based on the beacon frame, a vendor action frame that includes a MAC header and an internet group management protocol (IGMP) payload, the MAC header including a device MAC address of the first computing device, the IGMP payload including a first multicast media access control (MAC) address;
storing, in a table, information that represents an association between the first multicast MAC address and the device MAC address;
receiving, from a second computing device, a data frame indicating that the second computing device is in a power saving mode, the second computing device associated with a second multicast MAC address;
receiving, in a first DTIM interval, a first multicast frame and a second multicast frame;
determining that the first multicast frame includes the first multicast MAC address;
determining that the table includes the first multicast MAC address;
transmitting, within the first DTIM interval, the first multicast frame to the first computing device;
determining that the second multicast frame includes the second multicast MAC address;
determining that the table does not include the second multicast MAC address;
storing, in memory of the wireless access point, the second multicast frame;
and
transmitting, within a second DTIM interval after the first DTIM interval, the second multicast frame to the second computing device.

10 more elements

A network access device comprising:

one or more processors;
and
one or more non-transitory computer-readable storage media storing computer-readable instructions that, upon execution by the one or more processors, configure the network access device to:
determine that a first computing device is in a power saving mode, wherein the first computing device is communicatively coupled to the network access device;
receive, during a first delivery traffic indication map (DTIM) interval and while the first computing device is in the power saving mode, a multicast frame that includes a multicast media access control (MAC) address;
determine that the multicast MAC address is associated with a second computing device, the second computing device being capable of multicast frame transmission during DTIM intervals;
and
send, during the first DTIM interval and while the first computing device is in the power saving mode, the multicast frame to the second computing device.

5 more elements

A computer system comprising:

one or more processors;
and
one or more non-transitory computer-readable storage media storing computer-readable instructions that, upon execution by the one or more processors, configure the computer system to:
determine that a first computing device is in a power saving mode;
receive, during a delivery traffic indication map (DTIM) interval and while the first computing device is in the power saving mode, a multicast frame that includes a multicast media access control (MAC) address;
determine that the multicast MAC address is associated with a second computing device, the second computing device being capable of multicast frame transmission during DTIM intervals;
and
send, during the DTIM interval and while the first computing device is in the power saving mode, the multicast frame to the second computing device.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/530,289Filed 2 Aug 2019
Granted: 3 Aug 2021
Term ends: Not estimatedThe source records don’t support an estimate.

Classification12 codes

H04W 4/06
Services specially adapted for wireless communication networks; Facilities therefor: selective distribution of broadcast services, e.g. multimedia…
H04W 52/0216
Managed by the network, e.g. network or access point is leader and terminal is follower: using a pre-established activity schedule, e.g. traffic…
H04W 72/0446
Based on the type of the allocated resource: resources in time domain, e.g. slots or frames
H04W 72/30
Local resource management: resource management for broadcast services