Transmitting IP packets originating in a wireless station when the IP packets are destined for delivery to multiple destinations via an access point
A wireless station of a wireless network generates a single layer-2 frame containing multiple layer-3 packets in its payload. Each of the multiple layer-3 packets is destined to a corresponding different destination. The wireless station transmits the layer-2 frame to an access point (AP) of the wireless network. The AP receives the layer-2 frame, disassembles the payload into individual layer-3 packets, and transmits each of the individual layer-3 packets separately towards the corresponding destinations. In an embodiment, the wireless network is according to IEEE 802.11 standards, each layer-3 packet is an IP packet, and the layer-2 frame is a MAC frame.
1. A method performed in a wireless station of a wireless network, said method comprising:
generating a sequence of messages comprising a first layer-2 frame comprising a field for said wireless station to indicate that a plurality of layer-3 packets would be contained in subsequent layer-2 frames and a subsequent single layer-2 frame containing multiple layer-3 packets in a payload of said single subsequent layer-2 frame, wherein each of said multiple layer-3 packets is destined to a different destination; and
transmitting said single layer-2 frame to an access point (AP) of said wireless network.
2. The method of claim 1 , wherein said wireless network is according to IEEE 802.11 standards, each layer-3 packet is an IP packet and said single layer-2 frame is a medium access control (MAC) frame.
3. The method of claim 1 , wherein each of said layer-3 packets contains a layer-3 destination address of the corresponding destination.
4. The method of claim 1 , wherein said generating generates a sequence of layer-3 packets at respective times instances of a sequence of time instances, and includes only some of said sequence of layer-3 packets as said plurality of layer-3 packets without violating a maximum transmission unit (MTU) specified by said wireless network.
5. The method of claim 4 , wherein said generating includes only those of said sequence of layer-3 packets which are formed before expiration of a timer.
6. The method of claim 1 , wherein said AP upon receiving said layer-2 frame comprising said header, disassembles said payload into individual layer-3 packets, and transmits each layer-3 packet towards a corresponding destination.
7. The method of claim 6 , wherein said wireless station associates with said AP to join said wireless network by exchanging a sequence of messages,
wherein a first message of said sequence of messages sent by said wireless station to said AP contains a field for said wireless station to indicate that multiple layer-3 packets would be contained in subsequent layer-2 frames, wherein said disassembling and transmitting of each layer-3 packet are performed by said AP in response to said first message.
8. The method of claim 6 , wherein said disassembling and transmitting of each layer-3 packet are performed by said AP in response to said header indicating that said payload contains multiple layer-3 packets.
9. A wireless station of a wireless network, said wireless station comprising:
a processing block, a memory, and a transmitter circuit,
said memory to store instructions which when retrieved and executed by said processing block causes said wireless station to:
generate a sequence of messages comprising a first layer-2 frame comprising a field for said wireless station to indicate that a plurality of layer-3 packets would be contained in subsequent layer-2 frames and a subsequent single layer-2 frame containing multiple layer-3 packets in a payload of said subsequent single layer-2 frame, wherein each of said multiple layer-3 packets is destined to a different destination;
transmit said sequence of messages to an access point (AP) of said wireless network.
10. The wireless station of claim 9 , wherein said wireless station is configured to transmit over said wireless network according to IEEE 802.11 standards, each layer-3 packet is an IP packet and said layer-2 frames are medium access control (MAC) frames.
11. A system comprising the wireless station and AP of claim 9 , wherein said AP is configured to disassemble and transmit each layer-3 packet in response to receiving said first layer-2 frame.
12. The system of claim 11 , wherein said layer-2 frame comprises a header and a payload, said header indicating that said payload contains multiple layer-3 packets, wherein said AP is configured to disassemble and transmit each layer-3 packet in response to said header indicating that said payload contains multiple layer-3 packets.
13. The system of claim 12 , wherein said payload consists of the plurality of layer-3 packets.