Network device

Abstract

The utility model provides network equipment, and belongs to the technical field of wireless communication and optical communication. The network equipment comprises an equipment body, a first group of antennas and a second group of antennas, the first group of antennas comprises at least two antennas, the second group of antennas comprises at least two antennas, the first group of antennas and the second group of antennas are arranged on the equipment body, and the first group of antennas and the second group of antennas are distributed front and back in a first direction; the first direction is perpendicular to a panel of the equipment body; and the antenna polarization modes of the first group of antennas and the second group of antennas comprise a vertical polarization mode and a horizontal polarization mode. According to the invention, the negotiation rate between the user side equipment and the network equipment can be improved.

Description

Technical Field

[0001] The present disclosure relates to the technical fields of wireless communication and optical communication, and in particular to a network device. Background Art

[0002] With the development of communication technology, fiber optic transmission is increasingly used in communication systems, among which fiber to the room (FTTR) is an important part of the optical network. The FTTR system includes a main device and a sub device, which are connected by optical fiber. The main device is an optical network terminal (ONT) in a passive optical network (PON), also known as an optical network unit (ONU). The main device is connected to the optical line terminal (OLT) at the operator's central office through optical fiber.

[0003] However, the negotiation rate of the wireless local area network (WLAN) signal between the current master device or slave device and the user-side device needs to be improved, wherein the negotiation rate is the data transmission rate that can actually be achieved between the master device or slave device and the user-side device. Utility Model Content

[0004] The present disclosure provides a network device capable of improving the negotiation rate of transmission between a user-side device and the network device.

[0005] The present disclosure provides a network device, the network device comprising a device body, a first group of antennas and a second group of antennas;

[0006] The first group of antennas includes at least two antennas, the second group of antennas includes at least two antennas, the first group of antennas and the second group of antennas are both arranged on the device body, and the first group of antennas and the second group of antennas are distributed front and back in a first direction, and the first direction is perpendicular to the panel of the device body;

[0007] The antenna polarization modes of the first group of antennas and the second group of antennas include a vertical polarization mode and a horizontal polarization mode.

[0008] In the scheme disclosed in the present invention, the network device includes a first group of antennas and a second group of antennas, which are arranged on the device body along the front and rear directions of the device body. Compared with the two groups of antennas being arranged in a straight line on the panel of the device body, it can avoid the situation where there is only one spatial stream to transmit data between the network device and the user-side device on the left or right side of the network device, resulting in a low negotiation rate. Moreover, the antenna polarization modes of the first group of antennas and the second group of antennas include vertical polarization mode and horizontal polarization mode, compared with the vertical polarization mode of all antennas, it can alleviate the situation where the negotiation rate between the network device and the user-side device is low due to the mismatch of polarization modes. Subsequently, the network device provided in this embodiment can have a good negotiation rate with the user-side device.

[0009] In one possible implementation, the center distance between any two antennas in the first group of antennas, the center distance between any two antennas in the second group of antennas, and the center distance between any one antenna in the first group of antennas and any one antenna in the second group of antennas are all greater than or equal to 80 mm.

[0010] The center distance between the two antennas specifically refers to the distance between the center axis of one antenna and the center axis of the other antenna.

[0011] In the scheme shown in the present disclosure, simulation test results show that when the center distance between any two antennas is greater than or equal to 80 mm, the interference between the two antennas is weak and the isolation between the two antennas is good, which is beneficial to improving the communication quality between the user-side device and the network device, and thus improving the transmission rate between the user-side device and the network device.

[0012] In a possible implementation manner, the first group of antennas includes a first antenna and a second antenna, and the second group of antennas includes a third antenna and a fourth antenna;

[0013] The center distance between the first antenna and the second antenna is greater than or equal to 80 mm and less than or equal to 150 mm, or the center distance between the third antenna and the fourth antenna is greater than or equal to 80 mm and less than or equal to 150 mm.

[0014] In the scheme shown in the present disclosure, the two antennas satisfy a center spacing greater than or equal to 80 mm and less than or equal to 150 mm, which can reduce the channel condition number between the user-side device and the network device. The lower the channel condition number, the smaller the signal-to-noise ratio between the user-side device and the network device, and the better the communication quality. The signal transmitted between the user-side device and the network device can use the highest level of modulation, that is, the 4096QAM modulation method, which is conducive to improving the negotiation rate between the user-side device and the network device.

[0015] In one possible implementation, two antennas with a center distance greater than or equal to 80 mm and less than or equal to 150 mm are connected to different RF links, where the RF link connected to the antenna is a link connected to the antenna for feeding the antenna.

[0016] In the solution shown in the present disclosure, two antennas that can work simultaneously can reduce the number of channel conditions between the user-side device and the network device when the center distance satisfies that the center distance is greater than or equal to 80 mm and less than or equal to 150 mm.

[0017] In a possible implementation manner, the first group of antennas includes a first antenna and a second antenna, and the second group of antennas includes a third antenna and a fourth antenna;

[0018] A line connecting the position where the first antenna is located, the position where the second antenna is located, the position where the third antenna is located, and the position where the fourth antenna is located forms an isosceles trapezoid.

[0019] In the scheme shown in the present disclosure, the connecting lines of the positions of the first antenna, the second antenna, the third antenna and the fourth antenna form an isosceles trapezoid. Then, the four antennas are staggered in the left and right directions, which is beneficial to improve the isolation between the antennas, reduce interference, and make the antenna radiation pattern of the network device have a better roundness. The better the roundness of the antenna radiation pattern, the better the communication quality in 360 degrees centered on the network device.

[0020] In a possible implementation, the first antenna and the second antenna are both located on a panel of the device body, and the third antenna and the fourth antenna are both located on a side of the device body that is away from the panel.

[0021] In a possible implementation, the first antenna and the second antenna are both located on a panel of the device body, and the third antenna and the fourth antenna are respectively located on two sides of the device body.

[0022] In a possible implementation manner, the first group of antennas includes a first antenna and a second antenna, and the second group of antennas includes a third antenna and a fourth antenna;

[0023] The first antenna, the second antenna, the third antenna and the fourth antenna are all dual-band antennas, and each includes a first frequency band antenna and a second frequency band antenna.

[0024] In the solution shown in the present disclosure, the first frequency band antenna can be a 2.4G antenna, and the second frequency band antenna can be a 5G antenna, so that the network equipment has both good wall penetration function and high transmission rate.

[0025] In a possible implementation manner, the antenna polarization modes of the first frequency band antenna and the second frequency band antenna of the first antenna are both horizontal polarization, and the antenna polarization modes of the first frequency band antenna and the second frequency band antenna of the second antenna are both vertical polarization;

[0026] The antenna polarization modes of the first frequency band antenna and the second frequency band antenna of the third antenna are both vertical polarization, and the antenna polarization modes of the first frequency band antenna and the second frequency band antenna of the fourth antenna are both horizontal polarization.

[0027] In the scheme shown in the present disclosure, the polarization modes of the same working frequency band of the first antenna and the second antenna are different. Therefore, when the same working frequency band of the first antenna and the second antenna work at the same time, it can also avoid the situation where a single spatial stream appears on the left or right side of the network device, thereby improving the transmission rate between the user-side device and the network device.

[0028] In a possible implementation, the antenna polarization mode of the first frequency band antenna of the first antenna is horizontal polarization, and the antenna polarization mode of the second frequency band antenna of the first antenna is vertical polarization; the antenna polarization modes of the first frequency band antenna and the second frequency band antenna of the second antenna are both vertical polarization; the antenna polarization modes of the first frequency band antenna and the second frequency band antenna of the third antenna are both vertical polarization; and the antenna polarization modes of the first frequency band antenna and the second frequency band antenna of the fourth antenna are both horizontal polarization.

[0029] In the solution disclosed in the present invention, the polarization mode of the 5G antenna of the first antenna is horizontal polarization, while the 5G antennas of the second antenna, the third antenna and the fourth antenna are all vertically polarized, which is conducive to meeting the wide coverage requirements of the 5G signal of the network equipment.

[0030] In a possible implementation manner, the antenna polarization modes of the first frequency band antenna and the second frequency band antenna of the first antenna are both horizontal polarization, the antenna polarization mode of the first frequency band antenna of the second antenna is horizontal polarization, and the antenna polarization mode of the second frequency band antenna of the second antenna is vertical polarization;

[0031] The antenna polarization modes of the first frequency band antenna and the second frequency band antenna of the third antenna are both vertical polarization, and the antenna polarization modes of the first frequency band antenna and the second frequency band antenna of the fourth antenna are both vertical polarization.

[0032] In the solution disclosed in the present invention, the polarization mode of the 5G antenna of the first antenna is horizontal polarization, while the 5G antennas of the second antenna, the third antenna and the fourth antenna are all vertically polarized, which is conducive to meeting the wide coverage requirements of the 5G signal of the network equipment.

[0033] In a possible implementation, a radio frequency link of a first frequency band antenna connected to the first antenna is the same as a radio frequency link of a first frequency band antenna connected to the third antenna, and a radio frequency link of a second frequency band antenna connected to the first antenna is the same as a radio frequency link of a second frequency band antenna connected to the third antenna;

[0034] The RF link of the first frequency band antenna connected to the second antenna is the same as the RF link of the first frequency band antenna connected to the fourth antenna, and the RF link of the second frequency band antenna connected to the second antenna is the same as the RF link of the second frequency band antenna connected to the fourth antenna.

[0035] A switching switch is arranged on the RF link connected to the two antennas, and the switching switch is used to switch feeding between the two antennas. For example, a switching switch is arranged on the RF link of the first frequency band antenna connected to the first antenna and the RF link of the first frequency band antenna connected to the third antenna.

[0036] In the scheme disclosed in the present invention, one of the first frequency band antenna of the first antenna and the first frequency band antenna of the third antenna is a main antenna and the other is a diversity antenna, that is, the first frequency band antenna of the first antenna and the first frequency band antenna of the third antenna are fed by the same RF link, but the switching switch on the RF link is used to control whether to feed the first frequency band antenna of the first antenna to make it work or to feed the first frequency band antenna of the third antenna to make it work. Similarly, one of the second frequency band antenna of the first antenna and the second frequency band antenna of the third antenna is a main antenna and the other is a diversity antenna. One of the first frequency band antenna of the second antenna and the first frequency band antenna of the fourth antenna is a main antenna and the other is a diversity antenna. One of the second frequency band antenna of the second antenna and the second frequency band antenna of the fourth antenna is a main antenna and the other is a diversity antenna. Thus, the network device is a 2×2 MIMO network device in both the first frequency band and the second frequency band.

[0037] In a possible implementation, a radio frequency link connected to the first frequency band antenna of the first antenna is the same as a radio frequency link connected to the first frequency band antenna of the third antenna, and a radio frequency link connected to the first frequency band antenna of the second antenna is the same as a radio frequency link connected to the first frequency band antenna of the fourth antenna;

[0038] The radio frequency link connected to the second frequency band antenna of the fourth antenna is the same as the radio frequency link connected to the second frequency band antenna of the first antenna, and the radio frequency link connected to the second frequency band antenna of the fourth antenna, the radio frequency link connected to the second radio frequency antenna of the third antenna, and the radio frequency link connected to the second radio frequency antenna of the second antenna are different; or, the radio frequency link connected to the second frequency band antenna of the fourth antenna is the same as the radio frequency link connected to the second frequency band antenna of the second antenna, and the radio frequency link connected to the second frequency band antenna of the fourth antenna, the radio frequency link connected to the second radio frequency antenna of the third antenna, and the radio frequency link connected to the second radio frequency antenna of the first antenna are different;

[0039] A switching switch is arranged on the radio frequency link connected to the two antennas, and the switching switch is used to switch the feeding between the two antennas.

[0040] In the scheme shown in the present disclosure, the network device is a 3×3MIMO network device in the second frequency band, which is conducive to achieving: when communicating with a 2×2MIMO user-side device, the user-side device can be at any position in the 360-degree direction centered on the network device, and there can be two spatial streams between the user-side device and the network device.

[0041] In a possible implementation, a radio frequency link of a first frequency band antenna connected to the first antenna is the same as a radio frequency link of a first frequency band antenna connected to the third antenna, and a radio frequency link of a first frequency band antenna connected to the second antenna is the same as a radio frequency link of a first frequency band antenna connected to the fourth antenna;

[0042] The RF link of the second frequency band antenna connected to the first antenna is the same as the RF link of the second frequency band antenna connected to the third antenna, and the RF link of the second frequency band antenna connected to the first antenna, the RF link of the second RF antenna connected to the second antenna, and the RF link of the second RF antenna connected to the fourth antenna are different; or, the RF link of the second frequency band antenna connected to the first antenna is the same as the RF link of the second frequency band antenna connected to the fourth antenna, and the RF link of the second frequency band antenna connected to the first antenna, the RF link of the second RF antenna connected to the second antenna, and the RF link of the second RF antenna connected to the third antenna are different.

[0043] In the solution shown in the present disclosure, one of the first frequency band antenna of the first antenna and the first frequency band antenna of the third antenna is a main antenna and the other is a diversity antenna, and one of the first frequency band antenna of the second antenna and the first frequency band antenna of the fourth antenna is a main antenna and the other is a diversity antenna. Then, the network device is a 2×2 MIMO network device in the first frequency band. Among the second frequency band antenna of the first antenna, the second frequency band antenna of the second antenna, the second frequency band antenna of the third antenna and the second frequency band antenna of the fourth antenna, one is a diversity antenna and the other three are main antennas, then the network device is a 3×3 MIMO network device in the second frequency band.

[0044] The network device is a 3×3 MIMO network device in the second frequency band, which is conducive to achieving: when communicating with a 2×2 MIMO user-side device, the user-side device can have two spatial streams between the user-side device and the network device at any position in a 360-degree direction centered on the network device.

[0045] In a possible implementation, the network device is an optical network terminal, for example, the network device is specifically a main device in an FTTR network, or the network device is an ONT in an FTTH / O network. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 is a schematic diagram of a fiber-to-the-home or fiber-to-the-office system architecture provided by an exemplary embodiment of the present disclosure;

[0047] Figure 2 is a schematic diagram of a fiber-to-the-room system architecture provided by an exemplary embodiment of the present disclosure;

[0048] Figure 3 is a schematic diagram of the structure of a network device provided by an exemplary embodiment of the present disclosure;

[0049] Figure 4 is a structural diagram of a network device provided by another exemplary embodiment of the present disclosure;

[0050] Figure 5 is a structural diagram of a network device provided by another exemplary embodiment of the present disclosure;

[0051] Figure 6 is a structural diagram of a network device provided by another exemplary embodiment of the present disclosure;

[0052] Figure 7 is a structural diagram of a network device provided by another exemplary embodiment of the present disclosure;

[0053] Figure 8 is a structural diagram of a network device provided by another exemplary embodiment of the present disclosure;

[0054] Fig. 9 It is a schematic diagram of isolation simulation results provided by an exemplary embodiment of the present disclosure.

[0055] Description of Reference Numerals

[0056] 1. Device body; 11. Panel; 12. Front side; 21. First antenna; 22. Second antenna; 23. Third antenna; 24. Fourth antenna. DETAILED DESCRIPTION

[0057] In order to make the objectives, technical solutions and advantages of the present disclosure more clear, the embodiments of the present disclosure will be further described in detail below with reference to the accompanying drawings.

[0058] The present embodiment relates to a network device, specifically a network device with an external antenna, such as a router or ONT arranged on the user side. The present embodiment does not limit the specific type of the network device. For ease of introduction, the network device is taken as an ONT as an example below.

[0059] like Figure 1 The following is a schematic diagram of the system architecture of fiber to the home or fiber to the office (FTTH / O). Figure 1 As shown, it connects to the upstream network side equipment (such as switches, routers, etc.) and connects to the downstream ONT via the optical distribution network (ODN). ODN includes a passive optical splitter for optical power distribution, a trunk optical fiber connected between the passive optical splitter and the optical line terminal (OLT), and a branch optical fiber connected between the passive optical splitter and the ONT. When transmitting downstream signals, the downstream signals sent by the OLT are transmitted to each ONT through the passive optical splitter, and the ONT selectively receives its own downstream data in the downstream signal. When transmitting upstream signals, the upstream signals sent by N ONTs are merged into one optical signal by the passive optical splitter and transmitted to the OLT.

[0060] On the basis of FTTH / O, in order to solve the problem of signal coverage in home or office networks (such as wireless local area network (WLAN) signals), optical fiber can be further extended into the room. Optical terminal equipment that provides WLAN signals is installed inside the room, which shortens the distance between the user terminal and the wireless access point (AP) and improves the signal quality. This technology is called fiber to the room (FTTR).

[0061] like Figure 2 The following is a schematic diagram of the FTTR system architecture. Figure 2As shown in the figure, the OLT in FTTH / O is deployed in the central machine room, and the ONT is deployed in the home or office. The master device in the FTTR network serves as the ONT in the FTTH network on the one hand, and as the upstream device of the FTTR slave device on the other hand, to manage the slave device. The slave device in the FTTR can be deployed in each room of the home or office area to provide signals for the user-side device, where the user-side device includes Figure 2 The wired or wireless terminal or terminal adapter device shown, the user-side device can be, for example, a mobile phone, a tablet computer, a laptop computer, etc., which can communicate with the master device or the slave device through a wireless connection. Figure 2 The UNI interface represents the user network interface, which is responsible for the connection between the user side device and the network. The slave device has the function of ONT and can also have the function of wireless AP.

[0062] Multiple slave devices can be deployed in FTTR, and each slave device is connected to the master device via a splitter. The master device can manage and configure all slave devices in a unified manner. The master device can also be called "master gateway", "master optical modem" or "main FTTR device (main FTTR unit, MFU)", etc., and the slave device can also be called "slave gateway", "slave optical modem" or "slave FTTR device (subFTTR unit, SFU)", etc.

[0063] Current network devices, such as the ONT in the FTTH / O network or the ONT (master device or slave device) in the FTTR network described above, have a low negotiation rate between the network device and the user-side device due to the polarization mode or layout mode of the external antenna. The negotiation rate is the data transmission rate that can actually be achieved between the network device and the user-side device.

[0064] For example, in order to achieve wide coverage of wireless signals, the polarization mode of the external antenna of the network device is mostly vertical polarization, but the polarization mode of the antenna of the user-side device may be horizontal polarization. The inconsistent polarization mode will affect the negotiation rate between the network device and the user-side device.

[0065] For another example, a row of external antennas are arranged on the panel of the network device, and the negotiation rate is improved by increasing the spatial streams through the multiple input multiple output (MIMO) technology. However, in the left and right spaces of the network device, only one spatial stream can be negotiated between the network device and the user-side device. Therefore, the negotiation rate is still low in the left and right spaces of the network device.

[0066] For example, two pairs of external antennas are arranged along the front and back directions of the network device, but if the distance between the two antennas in a pair of antennas is not well controlled, the negotiation rate will also be affected. If the distance is too small, the isolation between the two antennas will be poor, the interference will be strong, resulting in a low negotiation rate. If the distance is too large, the channel condition number between the network device and the user-side device will be large (such as greater than 7dB), resulting in a low negotiation rate.

[0067] The antenna polarization modes of the multiple external antennas of the network device in this embodiment include vertical polarization mode and horizontal polarization mode to improve the negotiation rate. In addition, the multiple external antennas of the network device in this embodiment improve the negotiation rate by controlling the center distance between two antennas in the layout.

[0068] The characteristics of network devices are described below.

[0069] like Figures 3 to 5 As shown in the figure, it is a schematic diagram of the structure of the network equipment. Figure 3 As shown, the network device includes a device body 1, a first group of antennas and a second group of antennas, the first group of antennas and the second group of antennas are both arranged on the device body, and the first group of antennas and the second group of antennas are distributed front and back in a first direction, with reference to Figures 3 to 5 As shown, the first direction is the direction perpendicular to the panel 11 of the device body 1, the first direction is also the front-to-back direction of the device body 1, and the first direction is also the direction parallel to the y-axis in a three-dimensional coordinate system with the width direction of the device body 1 as the x-axis, the thickness direction as the z-axis, and the front-to-back direction as the y-axis.

[0070] Among them, the panel 11 of the device body 1 is the side of the device body 1 with the network port connected. Usually, the network device is placed on the desktop, and its panel 11 faces the wall and is away from the user. Therefore, the panel 11 of the device body 1 is sometimes also called the back side (or back panel) of the device body 1, and the front side 12 (also called the front panel) of the device body 1 is opposite to the panel 11 of the device body 1 in the front and back direction of the device body 1.

[0071] In one example, the first group of antennas and the second group of antennas are arranged front and back in a first direction on the device body 1. Compared with the two groups of antennas being arranged in a straight line on the panel 11 of the device body 1, it can avoid the situation where the user-side device is on the left or right side of the network device and there is only one spatial stream to transmit data between the network device and the user-side device.

[0072] In one example, the first group of antennas includes at least two antennas, the second group of antennas includes at least two antennas, the at least two antennas of the first group of antennas, and the at least two antennas of the second group of antennas, the antenna polarization modes of these antennas include vertical polarization mode and horizontal polarization mode, compared with the antenna polarization mode of all antennas being the vertical polarization mode, which can alleviate the low negotiation rate caused by the mismatch of polarization modes between the network device and the user-side device.

[0073] The vertical polarization mode mentioned above means that the direction of the electric field in the electromagnetic wave radiated by the antenna is perpendicular to the earth, and the horizontal polarization mode means that the direction of the electric field in the electromagnetic wave radiated by the antenna is parallel to the earth.

[0074] As described above, the first group of antennas and the second group of antennas are arranged front and back on the device body 1 in the first direction. Figure 3 As shown, the first group of antennas is arranged on the panel 11 of the device body 1, and the second group of antennas is arranged on the side of the device body 1 facing away from the panel 11 (ie, the front side 12 or the front panel mentioned above).

[0075] like Figure 3 and Figure 4 In the illustrated solution, the first group of antennas may include two antennas. If the device body 1 is wide enough, the first group of antennas may also include more antennas, such as three or four antennas. Similarly, the second group of antennas may include two antennas. If the device body 1 is wide enough, the second group of antennas may also include more antennas, such as three or four antennas.

[0076] For example, refer to Figure 5 As shown, the first group of antennas is arranged on the panel 11 of the device body 1, and the second group of antennas may include two antennas, which are arranged on the left and right sides of the device body 1, respectively. For example, one antenna is arranged on the left side of the device body 1, and one antenna is arranged on the right side of the device body 1. Figure 5 In the illustrated solution, the first antenna group may include two antennas or more, and the second antenna group includes two antennas.

[0077] In the following example, the first antenna group includes two antennas and the second antenna group includes two antennas. For easy distinction, the two antennas of the first antenna group are respectively recorded as a first antenna 21 and a second antenna 22, and the two antennas of the second antenna group are respectively recorded as a third antenna 23 and a fourth antenna 24.

[0078] Then, reference Figure 3 and Figure 4As shown, the first antenna 21 and the second antenna 22 are arranged on the panel 11 of the device body 1, such as being symmetrically arranged on the panel 11 of the device body 1 about the center line of the device body 1, the center line of the device body 1 is the center line parallel to the first direction, and unless otherwise specified, the center line of the device body 1 refers to the center line parallel to the first direction. The third antenna 23 and the fourth antenna 24 are arranged on the front side 12 of the device body 1, such as being symmetrically arranged on the front side 12 of the device body 1 about the center line of the device body 1.

[0079] refer to Figure 5 As shown, the first antenna 21 and the second antenna 22 are arranged on the panel 11 of the device body 1, such as being symmetrically arranged on the panel 11 of the device body 1 about the center line of the device body 1, and the third antenna 23 and the fourth antenna 24 are respectively located on both sides of the device body 1, and are also symmetrically distributed about the center line of the device body 1.

[0080] refer to Figures 3 to 5 As shown, whether the third antenna 23 and the fourth antenna 24 are arranged on the front side 12 of the device body 1 or on both sides of the device body 1, the connecting lines of the position of the first antenna 21, the position of the second antenna 22, the position of the third antenna 23, and the position of the fourth antenna 24 form an isosceles trapezoid.

[0081] The position of the first antenna 21, the position of the second antenna 22, the position of the third antenna 23, and the position of the fourth antenna 24 all refer to the positions of these antennas in the deployed state. The antennas are in the deployed state, that is, Figure 3 As shown, the straight line where the antenna is located is in a vertical state or a nearly vertical state. In some examples, these antennas can also be retracted to be attached to the upper surface of the device body 1.

[0082] This arrangement of forming an isosceles trapezoid is conducive to reducing the interference between the front and rear antennas and increasing the isolation between the front and rear antennas. For example, the first antenna 21 and the third antenna 23 are staggered in the left and right directions, which can avoid interference between the two antennas and improve isolation. Similarly, the second antenna 22 and the fourth antenna 24 are staggered in the left and right directions, which can avoid interference between the two antennas and improve isolation.

[0083] in, Figure 3 The line connecting the position of the first antenna 21 and the position of the second antenna 22 is larger than the line connecting the position of the third antenna 23 and the position of the fourth antenna 24. Figure 4 The line connecting the position of the first antenna 21 and the position of the second antenna 22 is smaller than the line connecting the position of the third antenna 23 and the position of the fourth antenna 24.

[0084] Since the first antenna 21 and the second antenna 22 are arranged on the panel 11 of the device body 1, and the panel 11 has multiple network connection ports, Figure 3 As shown, the first antenna 21 and the second antenna 22 are respectively close to the left and right ends of the panel 11 , which is more conducive to the arrangement of the connection network port between the first antenna 21 and the second antenna 22 .

[0085] In one example, after simulation testing, when the center distance between any two antennas is greater than or equal to 80 mm, the isolation between the two antennas is greater than 15 dB, indicating that the isolation between the two antennas is good. The simulation test results will be introduced later.

[0086] Therefore, in order to further reduce interference and improve isolation, the center distance between any two antennas in the first group of antennas, the center distance between any two antennas in the second group of antennas, and the center distance between any antenna in the first group of antennas and any antenna in the second group of antennas are all greater than or equal to 80 mm.

[0087] For example, refer to Figures 3 to 5 As shown, the center distance D3 between the first antenna 21 and the second antenna 22 is greater than or equal to 80 mm, the center distance D2 between the first antenna 21 and the third antenna 23 is greater than or equal to 80 mm, the center distance D1 between the first antenna 21 and the fourth antenna 24 is greater than or equal to 80 mm, the center distance D2 between the second antenna 22 and the third antenna 23 is greater than or equal to 80 mm, the center distance D1 between the third antenna 23 and the fourth antenna 24 is greater than or equal to 80 mm.

[0088] In one example, the center distance D3 between the first antenna 21 and the second antenna 22 is greater than or equal to 80 mm and less than or equal to 150 mm, or the center distance D1 between the third antenna 23 and the fourth antenna 24 is greater than or equal to 80 mm and less than or equal to 150 mm. After simulation testing, it is beneficial to reduce the number of channel conditions between the network device and the user side device. The simulation test conditions and simulation test results will be introduced later.

[0089] For example, refer to Figure 3 As shown, the center distance between the third antenna 23 and the fourth antenna 24 is greater than or equal to 80 mm and less than or equal to 150 mm, and the first antenna 21 and the second antenna 22 are located at the left and right ends of the panel 11. For another example, referring to Figure 4 As shown, the center distance between the first antenna 21 and the second antenna 22 is greater than or equal to 80 mm and less than or equal to 150 mm, and the third antenna 23 and the fourth antenna 24 are located at the left and right ends of the front side 12 of the device body 1. For another example, referring to Figure 5As shown, the center distance between the first antenna 21 and the second antenna 22 is greater than or equal to 80 mm and less than or equal to 150 mm, and the third antenna 23 and the fourth antenna 24 are arranged on the left and right sides of the device body 1.

[0090] The channel condition number is a measure of the transmission characteristics of the channel, which is used to evaluate the signal-to-noise ratio and bit error rate during signal transmission. The size of the channel condition number is related to the quality of the channel and the reliability of signal transmission. When the channel condition number is large, the quality of signal transmission is poor and the bit error rate is high.

[0091] In one example, each antenna of the network device may be a dual-band antenna capable of operating in two different frequency bands. For example, any antenna in the first group of antennas and any antenna in the second group of antennas are dual-band antennas, both including a first frequency band antenna and a second frequency band antenna, wherein the first frequency band antenna may be a 2.4G antenna and the second frequency band antenna may be a 5G antenna.

[0092] Then, the first antenna 21 includes a 2.4G antenna and a 5G antenna, the second antenna 22 includes a 2.4G antenna and a 5G antenna, the third antenna 23 includes a 2.4G antenna and a 5G antenna, and the fourth antenna 24 includes a 2.4G antenna and a 5G antenna.

[0093] In one example, reference Figure 3 and Figure 4 As shown, the RF link connected to the first antenna 21 and the RF link connected to the third antenna 23 can be the same, and it can also be understood that the first antenna 21 and the third antenna 23 are connected to the same RF circuit, and there is a switching switch in the RF link, through which the first antenna 21 is fed to make the first antenna 21 work or the third antenna 23 is fed to make the third antenna 23 work.

[0094] For example, refer to Figure 6 As shown, the 2.4G antenna of the first antenna 21 is a 2.4G diversity antenna, and the 2.4G antenna of the third antenna 23 is a 2.4G main antenna. Then, the 2.4G antenna of the first antenna 21 and the 2.4G antenna of the third antenna 23 are connected to the same RF link, and a switch on the RF link is used to switch whether to feed the 2.4G antenna of the first antenna 21 to make it work, or to feed the 2.4G antenna of the third antenna 23 to make it work.

[0095] refer to Figure 6As shown, the 5G antenna of the first antenna 21 is a 5G diversity antenna, and the 5G antenna of the third antenna 23 is a 5G main antenna. Then, the 5G antenna of the first antenna 21 and the 5G antenna of the third antenna 23 share a radio frequency link for feeding, and a switch on the radio frequency link is used to switch whether to feed the 5G antenna of the first antenna 21 to make it work or to feed the 5G antenna of the third antenna 23 to make it work.

[0096] Likewise, reference Figure 6 As shown, the 2.4G antenna of the second antenna 22 is a 2.4G main antenna, and the 2.4G antenna of the fourth antenna 24 is a 2.4G diversity antenna. The 2.4G antenna of the second antenna 22 and the 2.4G antenna of the fourth antenna 24 share a radio frequency link for feeding, and a switch on the radio frequency link is used to switch whether to feed the 2.4G antenna of the second antenna 22 to make it work or to feed the 2.4G antenna of the fourth antenna 24 to make it work.

[0097] refer to Figure 6 As shown, the 5G antenna of the second antenna 22 is a 5G main antenna, and the 5G antenna of the fourth antenna 24 is a 5G diversity antenna. The 5G antenna of the second antenna 22 and the 5G antenna of the fourth antenna 24 share a radio frequency link for feeding, and a switch on the radio frequency link is used to switch whether to feed the 5G antenna of the second antenna 22 to make it work or to feed the 5G antenna of the fourth antenna 24 to make it work.

[0098] In another example, the first antenna 21 and the fourth antenna 24 may share a radio frequency link for feeding, and the second antenna 22 and the third antenna 23 may share a radio frequency link for feeding. For example, one of the 2.4G antenna of the first antenna 21 and the 2.4G antenna of the fourth antenna 24 is a 2.4G main antenna, and the other is a 2.4G diversity antenna; one of the 5G antenna of the first antenna 21 and the 5G antenna of the fourth antenna 24 is a 5G main antenna, and the other is a 5G diversity antenna.

[0099] This embodiment does not limit which two antennas share a RF link for feeding, as long as the following relationship is met: the RF link of the 2.4G antenna connected to the first antenna 21 and the RF link of the 2.4G antenna connected to the second antenna 22 are independent of each other, and the RF link of the 5G antenna connected to the first antenna 21 and the RF link of the 5G antenna connected to the second antenna 22 are independent of each other; the RF link of the 2.4G antenna connected to the third antenna 23 and the RF link of the 2.4G antenna connected to the fourth antenna 24 are independent of each other, and the RF link of the 5G antenna connected to the third antenna 23 and the RF link of the 5G antenna connected to the fourth antenna 24 are independent of each other.

[0100] Of course, the first antenna 21 and the second antenna 22 may also be fed by the same RF link, such as the first antenna 21 includes a 2.4G main antenna and a 5G main antenna, and the second antenna 22 includes a 2.4G diversity antenna and a 5G diversity antenna. The third antenna 23 and the fourth antenna 24 may be fed by the same RF link, such as the third antenna 23 includes a 2.4G main antenna and a 5G main antenna, and the fourth antenna 24 includes a 2.4G diversity antenna and a 5G diversity antenna.

[0101] However, considering that when the first antenna 21 and the second antenna 22 work at the same time, or when the third antenna 23 and the fourth antenna 24 work at the same time, the signal between the network device and the user side device is stronger, the RF link connected to the first antenna 21 is different from the RF link connected to the second antenna 22, and the RF link connected to the third antenna 23 is different from the RF link connected to the fourth antenna 24.

[0102] Since the first antenna 21 and the third antenna 23 share a radio frequency link for feeding, and the second antenna 22 and the fourth antenna 24 share a radio frequency link for feeding, Figure 3 and Figure 4 The network device shown may be a two-input and two-output network device, that is, the network device belongs to a 2×2 MIMO network device.

[0103] In another example, Figure 3 The network device shown can be two-input and two-output in the 2.4G operating frequency band, and can be three-input and three-output in the 5G operating frequency band.

[0104] like Figure 7 As shown, the network device operates at a 2.4G frequency band, and the feeder link conditions of the first antenna 21 to the fourth antenna 24 are the same as those described above. Figure 6 The same, no further details are given. When the network device is in the 5G working frequency band, the 5G antenna of the fourth antenna 24 is a 5G diversity antenna, and the 5G antenna of the first antenna 21, the 5G antenna of the second antenna 22 and the 5G antenna of the third antenna 23 are all 5G main antennas. Then, the 5G diversity antenna of the fourth antenna 24 can be connected to the same RF link feed as the 5G main antenna of the first antenna 21, and use the same RF link feed, and switch who is fed by the switching switch on the RF link. The 5G diversity antenna of the fourth antenna 24 can also be connected to the same RF link feed as the 5G main antenna of the second antenna 22, and use the same RF link feed, and switch who is fed by the switching switch on the RF link.

[0105] In other examples, Figure 7In the illustrated solution, the 5G antenna of the first antenna 21 may be a 5G diversity antenna, and the 5G antennas of the remaining antennas may be main antennas. Alternatively, the 5G antenna of the second antenna 22 may be a 5G diversity antenna, and the 5G antennas of the remaining antennas may be main antennas. Alternatively, the 5G antenna of the third antenna 23 may be a 5G diversity antenna, and the 5G antennas of the remaining antennas may be main antennas.

[0106] In one example, Figure 5 The network device shown in the figure can be two-input and two-output in the 2.4G working frequency band, and can be three-input and three-output in the 5G working frequency band. Among them, the network device is a two-input and two-output feeding scheme in the 2.4G working frequency band, which can refer to the above description. For example, refer to Figure 8 As shown, the RF link of the 2.4G antenna connected to the first antenna 21 and the RF link of the 2.4G antenna connected to the third antenna 23 can be the same, and a switching switch for switching feeding is arranged on the RF link, for example, referring to Figure 8 As shown, the 2.4G antenna of the first antenna 21 is a 2.4G diversity antenna, and the 2.4G antenna of the third antenna 23 is a 2.4G main antenna. The RF link connecting the 2.4G antenna of the second antenna 22 and the RF link connecting the 2.4G antenna of the fourth antenna 24 can be the same, and a switch for switching feeding is arranged on the RF link, for example, referring to Figure 8 As shown, the 2.4G antenna of the second antenna 22 is a 2.4G diversity antenna, and the 2.4G antenna of the fourth antenna 24 is a 2.4G main antenna.

[0107] The RF link of the 5G antenna connected to the first antenna 21 is the same as the RF link of the 5G antenna connected to the third antenna 23, and a switching switch is arranged on the RF link, and the RF link of the 5G antenna connected to the first antenna 21, the RF link of the 5G antenna connected to the second antenna 22, and the RF link of the 5G antenna connected to the fourth antenna 24 are different. Alternatively, the RF link of the 5G antenna connected to the first antenna 21 is the same as the RF link of the 5G antenna connected to the fourth antenna 24, and a switching switch is arranged on the RF link, and the RF link of the 5G antenna connected to the first antenna 21, the RF link of the 5G antenna connected to the second antenna 22, and the RF link of the 5G antenna connected to the third antenna 23 are different.

[0108] It can also be understood as continuing to refer to Figure 8 As shown, the 5G antenna of the first antenna 21 is a 5G diversity antenna, and the 5G antennas of the second antenna 22, the third antenna 23 and the fourth antenna 24 are all 5G main antennas. Then, the 5G diversity antenna of the first antenna 21 can share an RF link with the 5G main antenna of the third antenna 23 for feeding, and can also share an RF link with the 5G main antenna of the fourth antenna 24 for feeding.

[0109] In other examples, the 5G antenna of the second antenna 22 may be a 5G diversity antenna, and the 5G antennas of the first antenna 21, the third antenna 23, and the fourth antenna may all be main antennas, or the 5G antenna of the third antenna 23 may be a 5G diversity antenna, and the 5G antennas of the first antenna 21, the second antenna 22, and the fourth antenna 24 may all be 5G main antennas, or the 5G antenna of the fourth antenna 24 may be a 5G diversity antenna, and the 5G antennas of the first antenna 21, the second antenna 22, and the third antenna 23 may all be 5G main antennas. That is, among the 5G antennas of the first antenna 21, the second antenna 22, the third antenna 23, and the fourth antenna 24, one of the 5G antennas may be a 5G diversity antenna, and the remaining 5G antennas may all be 5G main antennas. For ease of introduction, the 5G antenna of the first antenna 21 may be taken as an example of a 5G diversity antenna in the following text.

[0110] It should be pointed out that the 5G diversity antenna of the first antenna 21 can also share an RF link with the 5G main antenna of the second antenna 22 for feeding. However, when the 5G diversity antenna of the first antenna 21 and the 5G main antenna of the second antenna 22 share an RF link for feeding, the 5G diversity antenna of the first antenna 21 and the 5G main antenna of the second antenna 22 cannot work at the same time, and if they cannot work at the same time, they cannot exert better signal strength.

[0111] In one example, the network device has three inputs and three outputs in the 5G working frequency band, which helps to ensure that the user-side device can have two spatial streams between the user-side device and the network device at any position in the 360-degree direction centered on the network device (provided that the user-side device is a 2×2 MIMO device).

[0112] For example, refer to Figure 8 As shown, in the 5G operating frequency band, the 5G antenna of the first antenna 21 and the 5G antenna of the third antenna 23 share a radio frequency link for feeding:

[0113] (1) When the user-side device, the first antenna 21, and the second antenna 22 are located on the same line, the network device can control the 5G antenna in the first antenna 21 and the fourth antenna 24 to work, or control the 5G antenna in the second antenna 22 and the third antenna 23 to work, or control the 5G antenna in the third antenna 23 and the fourth antenna 24 to work, or control the 5G antenna in the second antenna 22 and the fourth antenna 24 to work, so as to avoid the 5G antennas of the first antenna 21 and the second antenna 22 working at the same time. In this way, when the user-side device, the first antenna 21 and the second antenna 22 are located on the same line, the spatial flow between the user-side device and the network device can be avoided to be one.

[0114] (2) When the user-side device, the first antenna 21, and the fourth antenna 24 are located on the same line, the network device can control the 5G antennas of the first antenna 21 and the second antenna 22 to work, or control the 5G antennas of the second antenna 22 and the third antenna 23 to work, or control the 5G antennas of the third antenna 23 and the fourth antenna 24 to work, or control the 5G antennas of the second antenna 22 and the fourth antenna 24 to work, so as to avoid the 5G antennas of the first antenna 21 and the fourth antenna 24 working at the same time. In this way, when the user-side device, the first antenna 21, and the fourth antenna 24 are located on the same line, the spatial flow between the user-side device and the network device can be avoided to be one.

[0115] (3) When the user-side device, the second antenna 22, and the fourth antenna 24 are located on the same line, the network device may control the 5G antenna of the first antenna 21 and the second antenna 22 to work, or control the 5G antenna of the second antenna 22 and the third antenna 23 to work, or control the 5G antenna of the first antenna 21 and the fourth antenna 24 to work, or control the 5G antenna of the third antenna 23 and the fourth antenna 24 to work, so as to avoid the 5G antennas of the second antenna 22 and the fourth antenna 24 working at the same time. In this way, when the user-side device, the second antenna 22, and the fourth antenna 24 are located on the same line, the spatial flow between the user-side device and the network device can be avoided to be one.

[0116] (4) When the user-side device, the second antenna 22, and the third antenna 23 are located on the same line, the network device may control the 5G antennas of the first antenna 21 and the second antenna 22 to work, or control the 5G antennas of the second antenna 22 and the fourth antenna 24 to work, or control the 5G antennas of the first antenna 21 and the fourth antenna 24 to work, or control the 5G antennas of the third antenna 23 and the fourth antenna 24 to work, so as to avoid the 5G antennas of the second antenna 22 and the third antenna 23 working at the same time. In this way, when the user-side device, the second antenna 22, and the third antenna 23 are located on the same line, the spatial flow between the user-side device and the network device can be avoided to be one.

[0117] (5) When the user-side device, the first antenna 21, and the third antenna 23 are located on the same line, because the 5G antenna of the first antenna 21 and the 5G antenna of the third antenna 23 are fed by the same RF link, the 5G antenna of the first antenna 21 and the 5G antenna of the third antenna 23 will not work at the same time. Therefore, when the user-side device, the first antenna 21, and the third antenna 23 are located on the same line, it can avoid that the spatial flow between the user-side device and the network device is one.

[0118] It can be seen that at any position of the user-side device in a 360-degree direction centered on the network device, there can be two spatial streams between the user-side device and the network device.

[0119] In one example, the polarization modes of each antenna may be controlled differently to avoid the situation where a spatial stream appears between the user-side device and the network device. Figure 6 As shown, the antenna polarization modes of the 2.4G diversity antenna and the 5G diversity antenna of the first antenna 21 are both horizontal polarization, and the antenna polarization modes of the 2.4G main antenna and the 5G main antenna of the second antenna 22 are both vertical polarization; the antenna polarization modes of the 2.4G main antenna and the 5G main antenna of the third antenna 23 are both vertical polarization, and the antenna polarization modes of the 2.4G diversity antenna and the 5G diversity antenna of the fourth antenna 24 are both horizontal polarization. Alternatively, the antenna polarization modes of the 2.4G diversity antenna and the 5G diversity antenna of the first antenna 21 are both vertical polarization, and the antenna polarization modes of the 2.4G main antenna and the 5G main antenna of the second antenna 22 are both horizontal polarization; the antenna polarization modes of the 2.4G main antenna and the 5G main antenna of the third antenna 23 are both horizontal polarization, and the antenna polarization modes of the 2.4G diversity antenna and the 5G diversity antenna of the fourth antenna 24 are both vertical polarization.

[0120] like Figure 7 As shown, the polarization mode of the 2.4G diversity antenna of the first antenna 21 is horizontal polarization, and the polarization mode of the 5G main antenna of the first antenna 21 is vertical polarization. The polarization mode of the 2.4G main antenna of the second antenna 22 is vertical polarization, and the polarization mode of the 5G main antenna of the second antenna 22 is vertical polarization. The polarization mode of the 2.4G main antenna of the third antenna 23 is vertical polarization, and the polarization mode of the 5G main antenna of the third antenna 23 is vertical polarization. The polarization mode of the 2.4G diversity antenna of the fourth antenna 24 is horizontal polarization, and the polarization mode of the 5G diversity antenna of the fourth antenna 24 is horizontal polarization.

[0121] like Figure 8 As shown, the antenna polarization mode of the 2.4G diversity antenna and the 5G diversity antenna of the first antenna 21 is horizontal polarization, the antenna polarization mode of the 2.4G diversity antenna of the second antenna 22 is horizontal polarization, the antenna polarization mode of the 5G main antenna of the second antenna 22 is vertical polarization, the antenna polarization mode of the 2.4G main antenna and the 5G main antenna of the third antenna 23 is vertical polarization, and the antenna polarization mode of the 2.4G main antenna and the 5G main antenna of the fourth antenna 24 is vertical polarization.

[0122] Then, refer to Figure 8As shown, in the 5G operating frequency band, the 5G antenna of the first antenna 21 and the 5G antenna of the third antenna 23 share a radio frequency link for feeding, so that the radio frequency link of the 5G antenna connected to the first antenna 21, the radio frequency link of the 5G antenna connected to the second antenna 22, and the radio frequency link of the 5G antenna connected to the fourth antenna 24 are independent of each other, and the radio frequency link of the 5G antenna connected to the second antenna 22, the radio frequency link of the 5G antenna connected to the third antenna 23, and the radio frequency link of the 5G antenna connected to the fourth antenna are independent of each other:

[0123] (1) When the user-side device, the first antenna 21, and the second antenna 22 are located on the same line, even if the 5G antennas of the first antenna 21 and the second antenna 22 work at the same time, since the polarization modes of the 5G antennas of the first antenna 21 and the second antenna 22 are different, it is possible to avoid that the spatial flow between the user-side device and the network device is one.

[0124] (2) When the user-side device, the first antenna 21, and the fourth antenna 24 are located on the same line, even if the 5G antennas of the first antenna 21 and the fourth antenna 24 work at the same time, the spatial flow between the user-side device and the network device can be avoided to be one because the polarization modes of the 5G antennas of the first antenna 21 and the fourth antenna 24 are different.

[0125] (3) When the user-side device, the second antenna 22, and the fourth antenna 24 are located on the same line, the network device may control the 5G antenna of the first antenna 21 and the second antenna 22 to work, or control the 5G antenna of the second antenna 22 and the third antenna 23 to work, or control the 5G antenna of the first antenna 21 and the fourth antenna 24 to work, or control the 5G antenna of the third antenna 23 and the fourth antenna 24 to work, so as to avoid the 5G antennas of the second antenna 22 and the fourth antenna 24 working at the same time. In this way, when the user-side device, the second antenna 22, and the fourth antenna 24 are located on the same line, the spatial flow between the user-side device and the network device can be avoided to be one.

[0126] (4) When the user-side device, the second antenna 22, and the third antenna 23 are located on the same line, the network device may control the 5G antennas of the first antenna 21 and the second antenna 22 to work, or control the 5G antennas of the second antenna 22 and the fourth antenna 24 to work, or control the 5G antennas of the first antenna 21 and the fourth antenna 24 to work, or control the 5G antennas of the third antenna 23 and the fourth antenna 24 to work, so as to avoid the 5G antennas of the second antenna 22 and the third antenna 23 working at the same time. In this way, when the user-side device, the second antenna 22, and the third antenna 23 are located on the same line, the spatial flow between the user-side device and the network device may be avoided to be one.

[0127] (5) When the user-side device, the first antenna 21, and the third antenna 23 are located on the same line, because the 5G antenna of the first antenna 21 and the 5G antenna of the third antenna 23 are fed by the same RF link, and there is a switch on the RF link for switching the feeding, the RF link will not feed the two antennas at the same time. Therefore, the 5G antenna of the first antenna 21 and the 5G antenna of the third antenna 23 will not work at the same time. Furthermore, when the user-side device, the first antenna 21, and the third antenna 23 are located on the same line, it can avoid that the spatial flow between the user-side device and the network device is one.

[0128] It can be seen that at any position of the user-side device in a 360-degree direction centered on the network device, there can be two spatial streams between the user-side device and the network device.

[0129] like Fig. 9 As shown, for Figure 8 A schematic diagram of the relationship between isolation and frequency in an isolation simulation test of the first antenna 21 and the second antenna 22 when the center distance between the two is greater than or equal to 80 mm, Fig. 9 The horizontal axis represents the frequency, and the vertical axis uses the isolation represented by the S parameter. Fig. 9 As shown, when the center distance between the first antenna 21 and the second antenna 22 is greater than or equal to 80 mm, both the isolation between the 2.4G antenna of the first antenna 21 and the 2.4G antenna of the second antenna 22, and the isolation between the 5G antenna of the first antenna 21 and the 5G antenna of the second antenna 22 are greater than 15 dB. Therefore, when the center distance between any two antennas of the network device is greater than or equal to 80 mm, the isolation between the two antennas is good.

[0130] The following introduces Figure 8 The network equipment shown shows the simulation test results of the channel condition number between the network equipment and the user-side equipment when transmitting 5G signals.

[0131] The 5G antenna of the first antenna 21 and the 5G antenna of the third antenna 23 share a radio frequency link for feeding, and the radio frequency link of the 5G antenna connected to the second antenna 22 and the radio frequency link of the 5G antenna connected to the fourth antenna 24 are independent of each other. The center distance between the first antenna 21 and the third antenna 23 is 169mm, and the center distance between the third antenna 23 and the fourth antenna 24 is 280mm. The distance between the network device and the user-side device is 2 meters.

[0132] Table 1 below shows the number of channel conditions between the network device and the user-side device when the first antenna 21 and the second antenna 22 have different center distances D3.

[0133] In Table 1, the front side indicates that the user side device faces away from the panel 11 of the network device, and the back side indicates that the user side device faces the panel 11 of the network device. The left side and the right side respectively indicate that the user side device is located on both sides of the network device.

[0134] Table 1

[0135]

[0136] It can be seen from Table 1 above that when the center distance between the first antenna 21 and the second antenna 22 satisfies less than or equal to 150 mm, the channel condition number between the user-side device and the network device in each direction is less than 7 dB, which means that the channel condition number between the user-side device and the network device is low. If the channel condition number between the user-side device and the network device is low, it means that the signal transmission quality between the user-side device and the network device is good. Then, the signal transmitted between the user-side device and the network device can be modulated using 4K QAM modulation technology, where 4K represents 4096 and QAM is quadrature amplitude modulation. The 4K QAM modulation technology can improve the negotiation rate between the user-side device and the network device. Therefore, when the center distance between the first antenna 21 and the second antenna 22 satisfies less than or equal to 150 mm, it is beneficial to improve the negotiation rate between the user-side device and the network device.

[0137] Based on the above, the external antenna of the network device may include a first antenna 21, a second antenna 22, a third antenna 23 and a fourth antenna 24. A layout method is described below.

[0138] refer to Figure 6 As shown, the first antenna 21 and the second antenna 22 are arranged on the panel of the device body 1, and the first antenna 21 and the second antenna 22 are located at the left and right ends of the panel 11, and the third antenna 23 and the fourth antenna 24 are arranged on the front side 12 of the device body 1 facing away from the panel, and the center distance between the third antenna 23 and the fourth antenna 24 is greater than or equal to 80 mm and less than or equal to 150 mm. The center distance between the first antenna 21 and the third antenna 23 is greater than or equal to 80 mm, and the center distance between the second antenna 22 and the fourth antenna 24 is greater than or equal to 80 mm.

[0139] Continue to refer Figure 6As shown, the first antenna 21 includes a 2.4G diversity antenna and a 5G diversity antenna, and the polarization modes are both horizontal polarization, the second antenna 22 includes a 2.4G main antenna and a 5G main antenna, and the polarization modes are both vertical polarization, the third antenna 23 includes a 2.4G main antenna and a 5G main antenna, and the polarization modes are both vertical polarization, and the fourth antenna 24 includes a 2.4G diversity antenna and a 5G diversity antenna, and the polarization modes are both horizontal polarization. The RF circuit of the 2.4G diversity antenna connected to the first antenna 21 is the same RF link as the RF circuit of the 2.4G main antenna connected to the third antenna 23. The RF circuit of the 5G diversity antenna connected to the first antenna 21 is the same RF link as the RF circuit of the 5G main antenna connected to the third antenna 23. The RF circuit of the 2.4G main antenna connected to the second antenna 22 is the same RF link as the RF circuit of the 2.4G diversity antenna connected to the fourth antenna 24. The RF circuit of the 5G main antenna connected to the second antenna 22 is the same RF link as the RF circuit of the 5G diversity antenna connected to the fourth antenna 24. There is a switch on the RF link connecting the two antennas to switch whether to feed the main antenna to make it work or to feed the diversity antenna to make it work.

[0140] In such Figure 6 In the layout shown, the network equipment can be three-input and three-output in the 5G operating frequency band, so refer to Figure 7 As shown, the RF link and polarization of the 2G antennas from the first antenna 21 to the fourth antenna 24 are Figure 6 Same, please refer to the above, no further details will be given. Figure 7 As shown, the 5G antenna of the first antenna 21 is a 5G main antenna, and the polarization mode is vertical polarization; the 5G antenna of the second antenna 22 is a 5G main antenna, and the polarization mode is vertical polarization; the 5G antenna of the third antenna 23 is a 5G main antenna, and the polarization mode is vertical polarization; the 5G antenna of the fourth antenna 24 is a 5G diversity antenna, and the polarization mode is horizontal polarization. Then, the 5G diversity antenna of the fourth antenna 24 can be fed by the same RF link as the 5G main antenna of the first antenna 21, while the 5G main antenna of the first antenna 21, the 5G main antenna of the second antenna 22, and the 5G main antenna of the third antenna 23 are connected to different RF links. Alternatively, the 5G diversity antenna of the fourth antenna 24 and the 5G main antenna of the second antenna 22 are fed by the same RF link, while the 5G main antenna of the first antenna 21, the 5G main antenna of the second antenna 22, and the 5G main antenna of the third antenna 23 are connected to different RF links.

[0141] Another layout method: Reference Figure 8As shown, the first antenna 21 and the second antenna 22 are arranged on the panel 11 of the device body 1, and the center distance between the two is greater than or equal to 80 mm and less than or equal to 150 mm, the third antenna 23 and the fourth antenna 24 are arranged on the left and right sides of the device body, respectively, and the third antenna 23 and the fourth antenna 24 are located close to the front side 12 of the device body 1; the center distance between the first antenna 21 and the third antenna 23 is greater than or equal to 80 mm, and the center distance between the second antenna 22 and the fourth antenna 24 is greater than or equal to 80 mm. The first antenna 21 includes a 2.4G diversity antenna and a 5G diversity antenna, and the polarization modes are both horizontal polarization. The second antenna 22 includes a 2.4G diversity antenna and a 5G main antenna, and the polarization mode of the 2.4G diversity antenna of the second antenna 22 is horizontal polarization, and the polarization mode of the 5G main antenna of the second antenna 22 is vertical polarization. The third antenna 23 includes a 2.4G main antenna and a 5G main antenna, and the polarization modes are both vertical polarization. The fourth antenna 24 includes a 2.4G main antenna and a 5G main antenna, and the polarization modes are both vertical polarization. The RF link connected to the 2.4G diversity antenna of the first antenna 21 is the same as the RF link connected to the 2.4G main antenna of the third antenna 23; the RF link connected to the 2.4G diversity antenna of the second antenna 22 is the same as the RF link connected to the 2.4G main antenna of the fourth antenna 24. The 5G diversity antenna of the first antenna 21 and the 5G main antenna of the third antenna 23 are connected to the same RF link, while the 5G main antenna of the third antenna 23, the 5G main antenna of the second antenna 22 and the 5G main antenna of the fourth antenna 24 are connected to different RF links; alternatively, the 5G diversity antenna of the first antenna 21 and the 5G main antenna of the fourth antenna 24 are connected to the same RF link, while the 5G main antenna of the fourth antenna 24, the 5G main antenna of the third antenna 23 and the 5G main antenna of the second antenna 22 are connected to different RF links.

[0142] In the disclosed embodiment, the network device includes a first group of antennas and a second group of antennas, which are arranged on the device body along the front-to-back direction of the device body. Compared with the two groups of antennas being arranged in a straight line on the panel of the device body, it can avoid the situation where there is only one spatial stream to transmit data between the network device and the user-side device on the left or right side of the network device, resulting in a low negotiation rate. Moreover, the antenna polarization modes of the first group of antennas and the second group of antennas include vertical polarization mode and horizontal polarization mode, compared with the vertical polarization mode of all antennas, it can alleviate the situation where the negotiation rate between the network device and the user-side device is low due to the mismatch of polarization modes. Subsequently, the network device provided in this embodiment can have a good negotiation rate with the user-side device.

[0143] The terms used in the embodiments of the present disclosure are only used to explain the embodiments of the present disclosure, and are not intended to limit the present disclosure. Unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present disclosure should be the common meanings understood by people with ordinary skills in the field to which the present disclosure belongs. The "first", "second" and similar words used in the present disclosure specification and claims do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, similar words such as "one" or "one" do not indicate a quantity limit, but indicate that there is at least one. Similar words such as "include" or "include" mean that the elements or objects appearing in front of "include" or "include" include the elements or objects listed after "include" or "include" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly. "Multiple" refers to two or more, unless otherwise clearly defined.

[0144] The above description is only an optional embodiment of the present disclosure and is not intended to limit the present disclosure. Any modifications, equivalent substitutions, improvements, etc. made within the principles of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A network device, characterized in that: The network device comprises a device body (1), a first group of antennas and a second group of antennas; The first group of antennas includes at least two antennas, the second group of antennas includes at least two antennas, the first group of antennas and the second group of antennas are both arranged on the device body (1), and the first group of antennas and the second group of antennas are distributed front and back in a first direction, and the first direction is perpendicular to the panel (11) of the device body (1); The antenna polarization modes of the first group of antennas and the second group of antennas include a vertical polarization mode and a horizontal polarization mode.

2. The network device according to claim 1, characterized in that: The center distance between any two antennas in the first group of antennas, the center distance between any two antennas in the second group of antennas, and the center distance between any one antenna in the first group of antennas and any one antenna in the second group of antennas are all greater than or equal to 80 mm.

3. The network device according to claim 1, characterized in that: The first group of antennas includes a first antenna (21) and a second antenna (22), and the second group of antennas includes a third antenna (23) and a fourth antenna (24); The center distance between the first antenna (21) and the second antenna (22) is greater than or equal to 80 mm and less than or equal to 150 mm, or the center distance between the third antenna (23) and the fourth antenna (24) is greater than or equal to 80 mm and less than or equal to 150 mm.

4. The network device according to claim 3, characterized in that: Two antennas with a center distance greater than or equal to 80 mm and less than or equal to 150 mm are connected to different radio frequency links.

5. The network device according to claim 1, characterized in that: The first group of antennas includes a first antenna (21) and a second antenna (22), and the second group of antennas includes a third antenna (23) and a fourth antenna (24); A line connecting the position of the first antenna (21), the position of the second antenna (22), the position of the third antenna (23), and the position of the fourth antenna (24) forms an isosceles trapezoid.

6. The network device according to claim 5, characterized in that: The first antenna (21) and the second antenna (22) are both located on the panel (11) of the device body (1), and the third antenna (23) and the fourth antenna (24) are both located on the side of the device body (1) facing away from the panel (11).

7. The network device according to claim 5, characterized in that: The first antenna (21) and the second antenna (22) are both located on the panel (11) of the device body (1), and the third antenna (23) and the fourth antenna (24) are respectively located on two sides of the device body (1).

8. The network device according to claim 1, characterized in that: The first group of antennas includes a first antenna (21) and a second antenna (22), and the second group of antennas includes a third antenna (23) and a fourth antenna (24); The first antenna (21), the second antenna (22), the third antenna (23) and the fourth antenna (24) are all dual-frequency antennas, and each comprises a first frequency band antenna and a second frequency band antenna.

9. The network device according to claim 8, characterized in that: The antenna polarization modes of the first frequency band antenna and the second frequency band antenna of the first antenna (21) are both horizontal polarization; The antenna polarization modes of the first frequency band antenna and the second frequency band antenna of the second antenna (22) are both vertical polarization; The antenna polarization modes of the first frequency band antenna and the second frequency band antenna of the third antenna (23) are both vertical polarization; The antenna polarization modes of the first frequency band antenna and the second frequency band antenna of the fourth antenna (24) are both horizontal polarization.

10. The network device according to claim 8, characterized in that: The antenna polarization mode of the first frequency band antenna of the first antenna (21) is horizontal polarization, and the antenna polarization mode of the second frequency band antenna of the first antenna (21) is vertical polarization; The antenna polarization modes of the first frequency band antenna and the second frequency band antenna of the second antenna (22) are both vertical polarization; The antenna polarization modes of the first frequency band antenna and the second frequency band antenna of the third antenna (23) are both vertical polarization; The antenna polarization modes of the first frequency band antenna and the second frequency band antenna of the fourth antenna (24) are both horizontal polarization.

11. The network device according to claim 8, characterized in that: The antenna polarization modes of the first frequency band antenna and the second frequency band antenna of the first antenna (21) are both horizontal polarization, the antenna polarization mode of the first frequency band antenna of the second antenna (22) is horizontal polarization, and the antenna polarization mode of the second frequency band antenna of the second antenna (22) is vertical polarization; The antenna polarization modes of the first frequency band antenna and the second frequency band antenna of the third antenna (23) are both vertical polarization, and the antenna polarization modes of the first frequency band antenna and the second frequency band antenna of the fourth antenna (24) are both vertical polarization.

12. The network device according to claim 8, characterized in that: The radio frequency link connected to the first frequency band antenna of the first antenna (21) is the same as the radio frequency link connected to the first frequency band antenna of the third antenna (23), and the radio frequency link connected to the second frequency band antenna of the first antenna (21) is the same as the radio frequency link connected to the second frequency band antenna of the third antenna (23); The radio frequency link connected to the first frequency band antenna of the second antenna (22) is the same as the radio frequency link connected to the first frequency band antenna of the fourth antenna (24), and the radio frequency link connected to the second frequency band antenna of the second antenna (22) is the same as the radio frequency link connected to the second frequency band antenna of the fourth antenna (24); A switching switch is arranged on the radio frequency link connected to the two antennas, and the switching switch is used to switch the feeding between the two antennas.

13. The network device according to claim 8, characterized in that: The radio frequency link connected to the first frequency band antenna of the first antenna (21) is the same as the radio frequency link connected to the first frequency band antenna of the third antenna (23), and the radio frequency link connected to the first frequency band antenna of the second antenna (22) is the same as the radio frequency link connected to the first frequency band antenna of the fourth antenna (24); The radio frequency link connected to the second frequency band antenna of the fourth antenna (24) is the same as the radio frequency link connected to the second frequency band antenna of the first antenna (21), and the radio frequency link connected to the second frequency band antenna of the fourth antenna (24), the radio frequency link connected to the second frequency band antenna of the third antenna (23), and the radio frequency link connected to the second frequency band antenna of the second antenna (22) are different; or, the radio frequency link connected to the second frequency band antenna of the fourth antenna (24) is the same as the radio frequency link connected to the second frequency band antenna of the second antenna (22), and the radio frequency link connected to the second frequency band antenna of the fourth antenna (24), the radio frequency link connected to the second frequency band antenna of the third antenna (23), and the radio frequency link connected to the second frequency band antenna of the first antenna (21) are different; A switching switch is arranged on the radio frequency link connected to the two antennas, and the switching switch is used to switch the feeding between the two antennas.

14. The network device according to claim 8, characterized in that: The radio frequency link connected to the first frequency band antenna of the first antenna (21) is the same as the radio frequency link connected to the first frequency band antenna of the third antenna (23), and the radio frequency link connected to the first frequency band antenna of the second antenna (22) is the same as the radio frequency link connected to the first frequency band antenna of the fourth antenna (24); The radio frequency link connected to the second frequency band antenna of the first antenna (21) is the same as the radio frequency link connected to the second frequency band antenna of the third antenna (23), and the radio frequency link connected to the second frequency band antenna of the first antenna (21), the radio frequency link connected to the second frequency band antenna of the second antenna (22), and the radio frequency link connected to the second frequency band antenna of the fourth antenna (24) are different; or, the radio frequency link connected to the second frequency band antenna of the first antenna (21) is the same as the radio frequency link connected to the second frequency band antenna of the fourth antenna (24), and the radio frequency link connected to the second frequency band antenna of the first antenna (21), the radio frequency link connected to the second frequency band antenna of the second antenna (22), and the radio frequency link connected to the second frequency band antenna of the third antenna (23) are different; A switching switch is arranged on the radio frequency link connected to the two antennas, and the switching switch is used to switch the feeding between the two antennas.

15. The network device according to any one of claims 1 to 14, characterized in that: The network device is an optical network terminal.

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