Wifi Network, and Networking Method Therefor and Data Transmission Method Therein

• US 20200137671A1
• Filed: 04/27/2018
• Published: 04/30/2020
• Est. Priority Date: 05/17/2017
• Status: Abandoned Application

• Current Assignee: Espressif Systems (Shanghai) Pte., Ltd.
• Original Assignee: Espressif Systems (Shanghai) Pte., Ltd.
• Inventors: Jiang, Jiangjian, Qi, Yuexia, Ye, Lina
• Application Number:
  US16/463,138
• Publication Number:
  US 20200137671A1
• Time in Patent Office: Days
• CPC Class Codes: H04L 12/185 with management of multicast group membership
• CPC Class Codes: H04L 12/189 in combination with wireless systems selective distribution or broadcast in wireless communication networks H04W4/06
• CPC Class Codes: H04L 2101/622 Layer-2 addresses, e.g. medium access control [MAC] addresses
• CPC Class Codes: H04L 61/5069 for group communication, multicast communication or broadcast communication
• CPC Class Codes: H04W 48/16 Discovering, processing access restriction or access information
• CPC Class Codes: H04W 84/18 Self-organising networks, e.g. ad-hoc networks or sensor networks

Abstract

The invention discloses a Wi-Fi networking method, the method comprises: an address definition in a MAC layer data structure comprises a target destination address and a group address of a Wi-Fi device; adding Wi-Fi devices in a same frequency band and having a same group address to a same Wi-Fi network. In the invention, one group address specifies one Wi-Fi network; any Wi-Fi devices in the same frequency band, as long as they have the same group address, are considered as being in the same network and establish one Wi-Fi network; any device is in a peer role, and there is no substantial connection relationship; any Wi-Fi device may freely join or leave the network; the number of devices in this network may tend to be infinite, the range of the network may tend to be infinitely wide, and various network topologies of different complexities are supported.

Claims

1. A networking method for a Wi-Fi network, wherein the method comprises:

an address definition in a MAC layer data structure comprising a target destination address and a group address of a Wi-Fi device; and

adding Wi-Fi devices in a same frequency band and having a same group address to a same Wi-Fi network.

2. The networking method for a Wi-Fi network according to claim 1, wherein the address definition in MAC layer further comprises a source address of the Wi-Fi device.

3. The networking method for a Wi-Fi network according to claim 1, wherein the Wi-Fi device operates in a Station/Client mode, and communicates in a MAC layer connectionless mode.

4. The networking method for a Wi-Fi network according to claim 1, wherein a topology of the Wi-Fi network comprises:

star structure, ring structure, bus structure, distributed structure, tree structure, or mesh structure.

5. The networking method for a Wi-Fi network according to claim 1, wherein a frame body of the MAC layer data structure is application data.

6. A Wi-Fi network established through the networking method for a Wi-Fi network according to claim 1, wherein the network comprises any number of Wi-Fi devices, wherein the Wi-Fi devices are in direction communication, or in indirection communication through other Wi-Fi device, and the Wi-Fi devices in the network have the same frequency band and the same group address.

7. A data transmission method for a Wi-Fi network, wherein the data transmission method comprises:

a plurality of Wi-Fi devices establishing a Wi-Fi network through the Wi-Fi networking method according to claim 1, and

a data transmitting device in the Wi-Fi devices performing data transmission to a data receiving device in a unicast, groupcast, or broadcast mode.

8. The data transmission method for a Wi-Fi network according to claim 7, wherein the data transmitting device and the data receiving device in the Wi-Fi network are directly communicatively connected;

in the unicast mode, the address definition in the MAC layer data structure of the data transmitting device comprises;

the MAC address of the data transmitting device, the MAC address of the data receiving device, and the group address;

in the groupcast mode, the address definition in the MAC layer data structure of the data transmitting device comprises;

the MAC address of the data transmitting device, a groupcast address, and the group address;

in the broadcast mode, the address definition in the MAC layer data structure of the data transmitting device comprises;

the MAC address of the data transmitting device, a broadcast address, and the group address.

9. The data transmission method for a Wi-Fi network according to claim 7, wherein the data transmitting device and the data receiving device in the Wi-Fi network are in indirection communication via a relay device;

in the unicast mode, the address definition in the MAC layer data structure of the data transmitting device comprises;

the MAC address of the data transmitting device, the MAC address of the relay device, and the group address;

a header of the frame body contains the MAC address of the data receiving device;

the address definition in the MAC layer data structure of the relay device comprises;

the MAC address of the relay device, the MAC address of the data receiving device, and the group address;

in the groupcast mode, the address definition in the MAC layer data structure of the data transmitting device comprises;

the MAC address of the data transmitting device, a groupcast address, and the group address;

a header of the frame body contains the MAC address of the data receiving device;

the address definition in the MAC layer data structure of the relay device comprises;

the MAC address of the relay device, the groupcast address, and the group address;

in the broadcast mode, the address definition in the MAC layer data structure of the data transmitting device comprises;

the MAC address of the data transmitting device, a broadcast address, and the group address;

a header of the frame body contains the MAC address of the data receiving device;

the address definition in the MAC layer data structure of the relay device comprises;

the MAC address of the relay device, the broadcast address, and the group address.

10. A Wi-Fi network established through the networking method for a Wi-Fi network according to claim 2, wherein the network comprises any number of Wi-Fi devices, wherein the Wi-Fi devices are in direction communication, or in indirection communication through other Wi-Fi device, and the Wi-Fi devices in the network have the same frequency band and the same group address.

11. A Wi-Fi network established through the networking method for a Wi-Fi network according to claim 3, wherein the network comprises any number of Wi-Fi devices, wherein the Wi-Fi devices are in direction communication, or in indirection communication through other Wi-Fi device, and the Wi-Fi devices in the network have the same frequency band and the same group address.

12. A Wi-Fi network established through the networking method for a Wi-Fi network according to claim 4, wherein the network comprises any number of Wi-Fi devices, wherein the Wi-Fi devices are in direction communication, or in indirection communication through other Wi-Fi device, and the Wi-Fi devices in the network have the same frequency band and the same group address.

13. A Wi-Fi network established through the networking method for a Wi-Fi network according to claim 5, wherein the network comprises any number of Wi-Fi devices, wherein the Wi-Fi devices are in direction communication, or in indirection communication through other Wi-Fi device, and the Wi-Fi devices in the network have the same frequency band and the same group address.

14. A data transmission method for a Wi-Fi network, wherein the data transmission method comprises:

a plurality of Wi-Fi devices establishing a Wi-Fi network through the Wi-Fi networking method according to claim 2; and

a data transmitting device in the Wi-Fi devices performing data transmission to a data receiving device in a unicast, groupcast, or broadcast mode.

15. A data transmission method for a Wi-Fi network, wherein the data transmission method comprises:

a plurality of Wi-Fi devices establishing a Wi-Fi network through the Wi-Fi networking method according to claim 3; and

a data transmitting device in the Wi-Fi devices performing data transmission to a data receiving device in a unicast, groupcast, or broadcast mode.

16. A data transmission method for a Wi-Fi network, wherein the data transmission method comprises:

a plurality of Wi-Fi devices establishing a Wi-Fi network through the Wi-Fi networking method according to claim 4; and

a data transmitting device in the Wi-Fi devices performing data transmission to a data receiving device in a unicast, groupcast, or broadcast mode.

17. A data transmission method for a Wi-Fi network, wherein the data transmission method comprises:

a plurality of Wi-Fi devices establishing a Wi-Fi network through the Wi-Fi networking method according to claim 5; and

a data transmitting device in the Wi-Fi devices performing data transmission to a data receiving device in a unicast, groupcast, or broadcast mode.