Communication apparatus and method for connecting a plurality of WiFi-Direct groups

Abstract

The invention relates to a communication apparatus and method for connecting a plurality of WiFi-Direct groups. The communication apparatus comprises a local network access point, a plurality of group owners, group users and a multi-group communication controller. The method comprises the following steps: establishing the WiFi-Direct groups; establishing WiFi-Direct group communication networks; performing information maintenance and update on the plurality of WiFi-Direct group communication networks; transmitting control information of the group users; receiving or forwarding the information of the group owners; forwarding the information of the multi-group communication controller; receiving and forwarding the information of the group owners; and establishing the links between the group users. The communication apparatus and method support the mutual communication among the plurality of WiFi-Direct groups, support the simultaneous access of the plurality of WiFi-Direct groups, reduce the mutual interference among the WiFi-Direct groups and improve the communication efficiency among the WiFi-Direct groups.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a communication device and method for connecting multiple WiFi-Direct groups. Background technique [0002] With the vigorous development of the mobile Internet, the application of wireless local area network (Wireless Fidelity, WiFi) has become more and more extensive, from the original computer connection to the Internet to provide interconnection of a series of computing devices including mobile phones, tablet computers, smart home appliances, etc. and Internet data access capabilities. It is generally believed that the prerequisite for establishing a WiFi connection is that there must be an access point (Access Point, AP) as a data exchange hub. Recently, the invention of WiFi-Direct technology enables devices using traditional Android, iOS or Windows platforms to establish multiple point-to-point WiFi connections through the network layer. According ...

AI Technical Summary

Problems solved by technology

But in the actual system, because WiFi-Direct GO supports simultaneous connection of WiFi-Direct users is often very limited (different from the traditional wireless AP, there is dedicated hardware for user information processing, and the number of supported users can reach 10 Above), the group size that can be formed through WiFi-Direct technology is very small (generally 2 to 4), so it cannot meet the needs of local communication in large-scale user situations including interactive games and group discussions

[0006] 2. Transmission of multiple groups of WiFi-Direct users: The main concern of this invention is how to quickly and effectively transmit longer data packets after the point-to-point WiFi-Direct connection is established, so as to solve the problem of unstable transmission originally encountered based on the TCP protocol. question

However, in the WiFi-Direct user group, the newly added group users must pass through the existing group owner to access the network. If the group owner needs to be changed, the only way is to dissolve the existing WiFi -Direct group, and re-establish a new group to achieve, the process is very complicated

In addition, even if a more powerful terminal device is used as the group owner, the size of the group that can be connected and formed is very small (generally 2 to 4), so it cannot meet the needs of large-scale users such as interactive games and group discussions. Under the local communication requirements

[0010] 2. Restriction of multiple groups of WiFi-Direct users: This invention is mainly concerned with technical issues arising from changing group owners within the same group

Therefore, the end-to-end user throughput drops significantly, and the transmission delay increases significantly, which cannot be used in a large-scale user environment.

[0014] 2. Limited coverage area: This invention mainly relies on the WiFi transmission capability between devices. Since the ability of handheld devices to transmit WiFi signals is relatively limited, it cannot play a role in scenarios such as large conference venues and cruise ships.

In a limited coverage area, as the number of users to be connected increases, the mutual interference will become more and more serious, so it cannot support a large number of users.

This invention can only adapt to the situation where the number of users is relatively small and the distance between users is relatively close, and it is not suitable for most wireless communication application scenarios

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