CN107040293B - Multi-user input and output communication system and method - Google Patents

Abstract

The invention relates to the technical field of communication, in particular to a multi-user input and output communication system and method. It includes a wireless access point device and a wireless terminal, and the wireless terminal communicates with the wireless access point device through the antenna of the wireless access point device; enabling a plurality of the wireless terminals to communicate through the wireless access point device Point devices access the network at the same time; multicast packets of wireless terminals are only transmitted through the antennas that communicate with them. By monitoring the antenna used for communication between the wireless terminal and the wireless access point device on the wireless access point device, multicast data of the wireless terminal is multicast only on the antenna corresponding to the wireless terminal. Signal interference is reduced and network resources are saved.

Description

Multi-user input and output communication system and method

technical field

The invention relates to the technical field of communication, in particular to a multi-user input and output communication system and method.

Background technique

MU-MIMO (Multi-User Multiple-Input Multipile-Output) is a technology that allows your router to communicate with multiple devices at the same time. It is a milestone in the second phase of the 802.11ac standard. This progress even Compared with 802.11b/g to 802.11n, and then to 802.11ac, the evolution of the version number only improves the theoretical speed, and MU-MIMO really improves the utilization of network resources.

The main purpose of MU-MIMO is to improve the efficiency of WiFi networks. Assuming that the traditional 802.11ac router signal is imagined as a "circle", this circle is the coverage of the signal, the antenna is at the center of the circle, and the signal is radiated outward at 360 degrees. For the devices in the "circle", the router will communicate with them in turn, one-to-one each time, no more.

MU-MIMO includes uplink MU-MINO and downlink MU-MIMO. Different users of uplink MU-MIMO use the same time-frequency resources for uplink transmission. From the perspective of the receiving end, these data streams can be regarded as different antennas from one user terminal. , thus forming a virtual MIMO system; downlink MU-MINO transmits multiple data streams to different user terminals, and multiple user terminals and eNB form a downlink MU-MIMO system. The null-trapping method separates the data streams transmitted to different users, and the beamforming method at the sending end can be used to separate the data streams of different users in advance, thereby simplifying the operation of the receiving end.

MU-MIMO can greatly increase the number of user access, and supports a maximum of 8 antennas. If a wireless access point device (AP) based on MU-MIMO has multiple antennas, these antennas can establish a connection with a wireless terminal (STA) respectively. For example, the AP has 4 antennas, we have 2 1x1 STA1, STA2, and 1 2x2 STA3, then the AP can establish communication with the STA as follows: Antenna 1 communicates with STA1. Antenna 2 communicates with STA2. Antennas 3, 4 communicate with STA3. Communications from all antennas are sent simultaneously, no time division is required.

However, when multicast is performed in the existing MU-MIMO communication system, the multicast message will be multicast and transmitted through all antennas of the wireless access point device (AP). For example, if one of multiple wireless terminals (such as STA1) that establishes contact with the AP needs to receive a multicast, and the rest of the wireless terminals (such as STA2 and STA3) do not need to receive multicast, according to the current mechanism, even with IGMP Snooping (Internet Group Management Protocol Snooping, Internet Group Management Protocol Snooping) will inevitably cause multicast packets to be sent to all antennas, occupying network resources and causing waste of network resources. Because the IGMP Snooping function implemented under normal circumstances cannot "Snooping" to the antenna of the wireless access point device (AP).

SUMMARY OF THE INVENTION

In order to solve the above technical problems, the present invention aims to provide a multi-user multiple-input multiple-output communication system, including a wireless access point device and a wireless terminal, and the wireless terminal and the wireless access point device are connected through the Antenna communication of the wireless access point device; enabling a plurality of the wireless terminals to simultaneously access the network through the wireless access point device; the multicast message of the wireless terminal is only transmitted through the antenna that communicates with it.

Preferably, the wireless access point device stores at least wireless terminal information; the wireless terminal information refers to the relevant information of the wireless terminal accessing the network through the wireless access point device, including at least wireless terminal ID information, and Antenna ID information corresponding to the wireless terminal.

Preferably, the wireless access point device includes a multicast request list, and the multicast request list is used to store access point multicast request information; the access point multicast request information refers to the wireless access point device The relevant information of the pending multicast request, including at least access point multicast request ID, multicast data information, antenna ID information; the wireless access point device according to the multicast request list and the group The antenna ID information corresponding to the broadcast request ID selects an antenna for multicasting the multicast data information.

Preferably, a multicast server is also included, and the multicast server is configured to control multicast among multiple wireless access point devices.

Preferably, the multicast server stores at least a multicast configuration table, and the multicast configuration table is used to store multicast group information; the multicast group information at least includes multicast group address information, which belongs to the multicast group. The ID information of the wireless terminal that belongs to the multicast group, and the ID information of the wireless access point device corresponding to the wireless terminal belonging to the multicast group.

Preferably, the multicast server receives a wireless terminal multicast request sent by the wireless terminal, and the wireless terminal multicast request includes at least wireless terminal ID information, the multicast data information, and multicast group address information; the The multicast server sends a multicast control message to the wireless access point device according to the wireless terminal multicast request, where the multicast control message at least includes the multicast data information and the wireless terminal ID information.

The present invention also provides a multi-user input and output communication method, which is suitable for a communication system including a wireless access point device and a wireless terminal; the wireless terminal and the wireless access point device are connected through the wireless access point device antenna communication; enabling a plurality of the wireless terminals to simultaneously access the network through the wireless access point device; it is characterized in that, it includes the steps:

Step S1, the wireless access point device receives an access point multicast request; the access point multicast request information at least includes multicast data information and wireless terminal ID information;

Step S2, the wireless access point device sends the multicast data through the antenna corresponding to the wireless terminal ID according to the wireless terminal information stored in the wireless access point device;

The wireless terminal information refers to the relevant information of the wireless terminal accessing the network through the wireless access point device, including at least wireless terminal ID information and antenna ID information corresponding to the wireless terminal.

Preferably, the step 2 includes:

Step 201, the wireless access point device establishes/updates a multicast request list according to the access point multicast request; the multicast request list is used to store access point multicast request information; the access point group The broadcast request information includes at least the access point multicast request ID, the multicast data information, and the antenna ID information;

Step 202, the wireless access point device selects the antenna represented by the antenna ID information to multicast the multicast data according to the multicast request list.

Preferably, the communication system further includes a multicast server; before step S1, it further includes:

Step S1-1, the wireless terminal device sends a wireless terminal multicast request to the multicast server, where the wireless terminal multicast request at least includes wireless terminal ID information, multicast data information, and multicast group address information;

Step S1-2, the multicast server sends a multicast control message to the relevant wireless access point device according to the wireless terminal multicast request, and the multicast control message is used as the An access point multicast request is received by the wireless access point device.

Preferably, the multicast server stores at least multicast group information; the multicast group information at least includes multicast group address information, ID information of wireless terminals belonging to the multicast group, and wireless terminals belonging to the multicast group. Corresponding wireless access point device ID information;

In step S1-2, the related wireless access point device is determined from the multicast group information.

The present invention multicasts its multicast data only on the antenna corresponding to the wireless terminal by monitoring the antenna used for communication between the wireless terminal and the wireless access point device on the wireless access point device. Signal interference is reduced and network resources are saved.

Description of drawings

FIG. 1 is a system schematic diagram of Embodiment 1 of the present invention.

FIG. 2 is a flowchart of Embodiment 1 of the present invention.

FIG. 3 is a system schematic diagram of Embodiment 2 of the present invention.

FIG. 4 is a flowchart of Embodiment 2 of the present invention.

Detailed ways

The following specific examples are only to explain the present invention, but not to limit the present invention. Those skilled in the art can make modifications without creative contribution to the present examples as needed after reading this specification, but as long as the rights of the present invention are used All claims are protected by patent law. While exemplary embodiments of the present disclosure are shown in the drawings, it will, of course, be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that the present disclosure will be more thoroughly understood and will fully convey the scope of the disclosure to those skilled in the art.

The following specific examples are only to explain the present invention, but not to limit the present invention. Those skilled in the art can make modifications without creative contribution to the present examples as needed after reading this specification, but as long as the rights of the present invention are used All claims are protected by patent law.

Example 1

As shown in Figure 1, a multi-user multiple-input multiple-output communication system includes a wireless access point device (AP) and a wireless terminal (STA). Antenna communication. The wireless terminal is a MU-MIMO-based wireless terminal that supports 802.11ac, and the wireless access point device is a MU-MIMO-based wireless access point device that supports 802.11ac. Multiple wireless terminals can simultaneously access the network through the wireless access point device. lose.

Specifically, the wireless access point device AP has four antennas: Antenna1, Antenna2, Antenna3, and Antenna4, and the wireless terminals include two 1×1 wireless terminals STA1 and STA2; and one 2×2 wireless terminal STA3. Then the wireless access point device can establish communication with the wireless terminal as follows:

The antenna Antenna1 communicates with the wireless terminal STA1;

The antenna Antenna2 communicates with the wireless terminal STA2;

Antennas Antenna3 and Antenna4 communicate with STA3;

This enables STA1, STA2 and STA3 to access the network through the wireless access point device AP at the same time.

In this embodiment, the wireless access point device at least stores wireless terminal information. The wireless terminal information refers to the relevant information of the wireless terminal accessing the network through the wireless access point device. As shown in Table 1, the wireless terminal information includes at least wireless terminal ID information and antenna ID information corresponding to the wireless terminal.

Antenna ID information Wireless terminal ID information Antenna1 STA1 Antenna2 STA2 Antenna3 STA3 Antenna4 STA3

Table 1 Wireless terminal information stored by the wireless access point device

The wireless access point device further includes a multicast request list, where the multicast request list is used to store access point multicast request information. The access point multicast request information refers to information related to a multicast request (Multicast) to be processed by the wireless access point device. The relevant information of the multicast request includes the access point multicast request ID, multicast data information, antenna ID information, and wireless terminal ID information. As shown in Table 2, when STA1 has multicast requirements and STA3 has multicast requirements, the multicast request list of the wireless access point device:

Table 2 List of multicast requests of wireless access point devices

When the multicast data of Multicast1 of the wireless terminal STA1 arrives, the wireless access point device can query the multicast request list to obtain that the antenna corresponding to Multicast1 is Antenna1, so Antenna1 is selected for multicasting the multicast data of the wireless terminal STA1. Since the wireless access point device supports the MU-MIMO technology, the antennas Antenna1, Antenna2, Antenna3, and Antenna4 can communicate at the same time, not time-division. Therefore, when the packets of Multicast1 are transmitted on the antenna Antenna1, the antennas Antenna2, Antenna3, and Antenna4 can transmit other packets at the same time, which is completely unaffected.

When the multicast data of Multicast3 of the wireless terminal STA3 arrives, the wireless access point device can query the multicast request list to obtain that the antennas corresponding to Multicast3 are Antennal3 and Antennal4, so Antennal3 and Antennal4 are selected for the multicast wireless terminal STA3. Multicast data. Similarly, when the packets of Multicast3 are transmitted on the antennas Antenna3 and Antenna4, the antennas Antenna1 and Antenna2 can transmit other packets at the same time, which is completely unaffected.

The communication method of the multi-user multiple-input multiple-output communication system based on this embodiment includes:

Step S1, the wireless access point device (AP) receives the access point multicast request; the access point multicast request information at least includes multicast data information and wireless terminal ID information;

Step S2, the wireless access point device (AP) sends the multicast data through the antenna multicast corresponding to the wireless terminal ID according to its stored wireless terminal information;

The wireless terminal information refers to information related to wireless terminals accessing the network through the wireless access point device. The relevant information of the wireless terminal is shown in Table 1, including wireless terminal ID information and antenna ID information corresponding to the wireless terminal.

Further, step 2 also includes:

Step 201, the wireless access point device (AP) establishes or/updates a multicast request list stored in the access point multicast request according to the access point multicast request. The multicast request list is used to store access point multicast request information. As shown in Table 2, the access point multicast request information includes access point multicast request ID, multicast data information, antenna ID information, and wireless terminal ID information.

Step 202, the wireless access point device (AP) selects the antenna multicast data represented by the antenna ID information according to the multicast request list.

Embodiment 2

As shown in Figure 3, a multi-user multiple-input multiple-output communication system includes an IGMP server, a wireless access point device (AP) and a wireless terminal (STA). The wireless terminal and the wireless access point device are connected through the wireless access point device The IGMP server is used to control multicast between multiple wireless access point devices (APs). The wireless terminal is a MU-MIMO-based wireless terminal that supports 802.11ac, and the wireless access point device is a MU-MIMO-based wireless access point device that supports 802.11ac. Multiple wireless terminals can simultaneously access the network through the wireless access point device. lose.

Specifically, the wireless access point devices include AP1, AP2 and AP3. Among them, AP1 has 4 antennas: Antenna1, Antenna2, Antenna3, Antenna4; AP2 has 2 antennas: Antenna5, Antenna6; AP3 has 2 antennas Antenna7 and Antenna8. The wireless terminals include six 1×1 wireless terminals STA1 , STA2 , STA4 , STA5 , STA6 , and STA7 , and one 2×2 wireless terminal STA3 . Then the wireless access point device can establish communication with the wireless terminal as follows:

The antenna Antenna1 communicates with the wireless terminal STA1;

The antenna Antenna2 communicates with the wireless terminal STA2;

Antennas Antenna3 and Antenna4 communicate with STA3;

The antenna Antenna5 communicates with STA4;

The antenna Antenna6 communicates with STA5;

Antenna7 communicates with STA6;

Antenna8 communicates with STA7;

STA1, STA2 and STA3 can access the network through the wireless access point device AP1 at the same time; STA4 and STA5 can simultaneously access the network through the wireless access point device AP2, and STA6 and STA7 can simultaneously access the network through the wireless access point device AP3.

The IGMP server is used to control multicast among multiple wireless access point devices AP1, AP2, and AP3. The IGMP server at least stores the multicast configuration table, and the user groups the wireless terminals STA1-7 passing through the wireless access point device by configuring the multicast configuration table. The multicast configuration table stores the multicast group information configured by the user. As shown in Table 3, the multicast group information includes at least the multicast group ID, the multicast group address information, the ID information of the wireless terminals belonging to the multicast group, and the information about the wireless terminals belonging to the multicast group. ID information of the wireless access point corresponding to the wireless terminal of the broadcast group.

Table 3 Multicast configuration table of IGMP server

The IGMP server receives the wireless terminal multicast request sent by the wireless terminal, and the wireless terminal multicast request includes multicast group ID information, wireless terminal ID information, multicast data information, and multicast group address information. The IGMP server receives the multicast request from the wireless terminal, queries the multicast configuration table according to the multicast group address information contained therein, and generates a multicast control message. The multicast server sends the multicast control message to the wireless access point device under the multicast group corresponding to the multicast group address in the multicast configuration table. For example, if the wireless terminal STA1 has the requirement to perform multicast in the multicast group 2, the wireless terminal STA1 sends the wireless terminal multicast request shown in Table 4 to the IGMP server.

Multicast group ID information Wireless terminal ID information Multicast data information Multicast group address information multicast group 2 STA1 multicast data Multicast group 2 MAC address

Table 4 Wireless terminal terminal multicast request format

According to the query multicast configuration table, the IGMP server sends a multicast control message to the wireless access devices AP1 and AP3 in the multicast group 2 to notify them to send multicast messages on their corresponding antennas. As shown in Table 5, the multicast control packet includes at least multicast data information and wireless terminal ID information.

Wireless terminal ID information Multicast data information STA1 multicast data STA6 multicast data

Table 5 Multicast Control Packet Format

The wireless access point device stores at least wireless terminal information. The wireless terminal information refers to the relevant information of the wireless terminal accessing the network through the wireless access point device. As shown in Table 6-8, the wireless terminal information includes at least wireless terminal ID information and antenna ID information corresponding to the wireless terminal.

Table 6 Wireless terminal information stored by the wireless access point device AP1

Antenna ID information Wireless terminal ID information Antenna5 STA4 Antenna6 STA5

Table 7 Wireless terminal information stored by the wireless access point device AP2

Antenna ID information Wireless terminal ID information Antenna7 STA6 Antenna8 STA7

Table 8 Wireless terminal information stored by the wireless access point device AP3

The wireless access point device further includes a multicast request list, where the multicast request list is used to store access point multicast request information. The access point multicast request information refers to the related information of the pending multicast request (Multicast) of the wireless access point device (ie, the multicast control message sent by the IGMP server, as shown in Table 5). The relevant information of the multicast request includes the access point multicast request ID, multicast data information, antenna ID information, and wireless terminal ID information. Table 9-10 shows the status of the multicast request list of the wireless access point device when AP1 and AP3 receive the multicast control packet sent by the IGMP server.

Table 9 List of multicast requests of wireless access point device AP1

Table 10 List of multicast requests of wireless access point device AP3

When the multicast data of Multicast1 of the wireless terminal STA1 arrives, the wireless access point device can query the multicast request list to obtain that the antenna corresponding to Multicast1 is Antenna1, so Antenna1 is selected for multicasting the multicast data of the wireless terminal STA1. Since the wireless access point device supports the MU-MIMO technology, the antennas Antenna1, Antenna2, Antenna3, and Antenna4 can communicate at the same time, not time-division. Therefore, when the packets of Multicast1 are transmitted on the antenna Antenna1, the antennas Antenna2, Antenna3, and Antenna4 can transmit other packets at the same time, which is completely unaffected.

When the multicast data of Multicast6 of the wireless terminal STA6 arrives, the wireless access point device can query the multicast request list to obtain that the antenna corresponding to Multicast6 is Antennal7, so Antennal7 is selected for multicasting the multicast data of the wireless terminal STA6. Similarly, when the packets of Multicast6 are transmitted on the antenna Antenna7, the antenna Antenna8 can transmit other packets at the same time, which is completely unaffected.

The communication method of the multi-user multiple-input multiple-output communication system based on this embodiment includes:

In step S1-1, the wireless terminal device sends a wireless terminal multicast request to the IGMP server. As shown in Table 4, the wireless terminal multicast request includes at least wireless terminal ID information, multicast data information, and multicast group address information.

Step S1-2, the IGMP server sends a multicast control message (as shown in Table 5) to the relevant wireless access point device (the relevant wireless access point device is represented by the multicast group shown in Table 4) according to the multicast request of the wireless terminal. information is confirmed). In step S1, the multicast control message is received by the wireless access point device as an access point multicast request.

Step S1, the wireless access point device (AP) receives the access point multicast request; the access point multicast request information at least includes multicast data information and wireless terminal ID information.

Step S2, the wireless access point device (AP) sends multicast data through the antenna corresponding to the wireless terminal ID according to the wireless terminal information stored in the wireless access point device (AP). The wireless terminal information refers to information related to wireless terminals accessing the network through the wireless access point device. The relevant information of the wireless terminal is shown in Table 6-8, including wireless terminal ID information and antenna ID information corresponding to the wireless terminal.

Further, step 2 also includes:

Step 201, the wireless access point device (AP) establishes or/updates a multicast request list stored in the access point multicast request according to the access point multicast request. The multicast request list is used to store the access point multicast request information, as shown in Table 9-10. The access point multicast request information includes the access point multicast request ID, multicast data information, antenna ID information, and wireless terminal ID. information.

Step 202, the wireless access point device (AP) selects the antenna multicast data represented by the antenna ID information according to the multicast request list.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which the present invention pertains can make various modifications or additions to the described specific embodiments or substitute in similar manners, but will not deviate from the spirit of the present invention or go beyond the definitions of the appended claims range.

Claims (9)

1. A multiple-user multiple-input multiple-output (memo) communication system, comprising a wireless access point device and a wireless terminal, wherein the wireless terminal and the wireless access point device communicate through an antenna of the wireless access point device; enabling a plurality of the wireless terminals to simultaneously access a network through the wireless access point device; the multicast message of the wireless terminal is transmitted only through an antenna communicated with the wireless terminal;

the wireless access point device at least stores wireless terminal information; the wireless terminal information is related to the wireless terminal accessing the network through the wireless access point device, and at least includes wireless terminal ID information and antenna ID information corresponding to the wireless terminal.

2. A mimo communications system according to claim 1, wherein the wireless access point device includes a multicast request list for storing access point multicast request information; the access point multicast request information refers to the related information of the multicast request to be processed of the wireless access point equipment, and at least comprises an access point multicast request ID, multicast data information and antenna ID information; and the wireless access point equipment selects an antenna for multicasting the multicast data information according to the antenna ID information corresponding to the multicast request ID in the multicast request list.

3. The multiple-user multiple-input multiple-output communication system according to claim 2, further comprising a multicast server for controlling multicast among a plurality of the wireless access point devices.

4. A mimo communications system according to claim 3, wherein the multicast server stores at least a multicast configuration table, the multicast configuration table being used for storing multicast group information; the multicast group information at least comprises multicast group address information, wireless terminal ID information belonging to the multicast group and wireless access point equipment ID information corresponding to the wireless terminal belonging to the multicast group.

5. The mu-mimo communication system according to claim 4, wherein the multicast server receives a wireless terminal multicast request sent by the wireless terminal, the wireless terminal multicast request including at least wireless terminal ID information, the multicast data information, and multicast group address information; and the multicast server sends a multicast control message to the wireless access point equipment according to the wireless terminal multicast request, wherein the multicast control message at least comprises the multicast data information and the wireless terminal ID information.

6. A multi-user input-output communication method is suitable for a communication system comprising wireless access point equipment and a wireless terminal; the wireless terminal and the wireless access point equipment are communicated through an antenna of the wireless access point equipment; enabling a plurality of the wireless terminals to simultaneously access a network through the wireless access point device; the method is characterized by comprising the following steps:

step S1, the wireless access point device receives the access point multicast request; the access point multicast request information at least comprises multicast data information and wireless terminal ID information;

step S2, the wireless access point device sends the multicast data to the antenna corresponding to the wireless terminal ID for multicast according to the wireless terminal information stored by the wireless access point device;

the wireless terminal information refers to information related to the wireless terminal accessing a network through the wireless access point device, and includes at least wireless terminal ID information and antenna ID information corresponding to the wireless terminal.

7. The multiple-user input multiple-output communication method according to claim 6, wherein the step 2 comprises:

step 201, the wireless access point device establishes/updates a multicast request list according to the access point multicast request; the multicast request list is used for storing access point multicast request information; the access point multicast request information at least comprises an access point multicast request ID, the multicast data information and antenna ID information;

step 202, the wireless access point device selects an antenna represented by the antenna ID information to multicast the multicast data according to the multicast request list.

8. The multiple-user input multiple-output communication method according to claim 6, wherein the communication system further comprises a multicast server; before step S1, the method further includes:

step S1-1, the wireless terminal device sends a wireless terminal multicast request to the multicast server, the wireless terminal multicast request at least includes wireless terminal ID information, multicast data information, multicast group address information;

step S1-2, the multicast server sends a multicast control packet to the related wireless access point device according to the wireless terminal multicast request, and the multicast control packet is received by the wireless access point device as the access point multicast request in step S1.

9. The mu-mimo communication method according to claim 8, wherein the multicast server stores at least multicast group information; the multicast group information at least comprises multicast group address information, wireless terminal ID information belonging to the multicast group and wireless access point equipment ID information corresponding to the wireless terminal belonging to the multicast group;

in step S1-2, the relevant wireless access point device is determined by the multicast group information.

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