CN109246755B - Network master control device and network communication method of cooperative service set - Google Patents
Network master control device and network communication method of cooperative service set Download PDFInfo
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- CN109246755B CN109246755B CN201710372144.3A CN201710372144A CN109246755B CN 109246755 B CN109246755 B CN 109246755B CN 201710372144 A CN201710372144 A CN 201710372144A CN 109246755 B CN109246755 B CN 109246755B
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Abstract
The present disclosure discloses a network master control device and a network communication method for a cooperative service set, which can control a plurality of wireless service devices to simultaneously maintain wireless connection between the plurality of wireless service devices and a wireless terminal device. An embodiment of a network master control apparatus in the present disclosure includes a control circuit for performing the following steps: receiving a plurality of uplink packets, and sending a transmission packet to an external network according to at least one of the uplink packets, wherein the uplink packets are respectively from a plurality of wireless service devices, and a source address of each uplink packet is an address of a wireless terminal device; and sending at least one downlink packet to at least one of the plurality of wireless service devices according to a received packet from the external network, wherein a target address of each downlink packet is the address of the wireless terminal device.
Description
Technical Field
The present invention relates to a network device and a network communication method, and more particularly, to a network master control device and a network communication method capable of implementing a Cooperative Service Set (Cooperative Service Set).
Background
Wireless networks have been widely used in daily life for their convenience. A conventional home network system comprises a routing device (e.g., gateway (gateway), router (router), etc.) and a plurality of access points (access points), each providing a Basic Service Set (BSS) within a Service scope. A wireless terminal device (such as a computer, a mobile phone, etc.) is located within the service range of the basic service set, and can establish a connection with the access point providing the basic service set, and after the connection is established, the wireless terminal device can be connected to an external network (such as the Internet) through the access point and the routing device.
However, in the prior art (e.g., IEEE 802.112016 version), a wireless terminal device can only maintain a connection with a single Access point at the same time, and if the wireless terminal device intends to form a connection with another Access point, it must first disconnect the Access point in the connection, regardless of whether the connection settings (e.g., Service Set Identifier (SSID), security type (security type), and key) of the Access point and the another Access point are the same, where the BSSID of the Access point and the BSS Identifier (BSSID) of the another Access point are different in the prior art, and in a conventional public basic Service Set (Infrastructure BSS), the BSSID of an Access point is the Media Access Control address (Media Access Control address) of the Access point. The above-mentioned prior art includes at least the following problems:
if a wireless terminal device continuously moves back and forth between the service range of a first basic service set (provided by a first access point) and the service range of a second basic service set (provided by a second access point), the wireless terminal device may frequently break the original connection to establish a new connection because the wireless terminal device frequently departs from the original service range and enters a new service range, which reduces the actual data transmission and reception time of the wireless terminal device, thereby reducing the data throughput rate of the wireless terminal device.
If a wireless terminal device is located in the service range of multiple access points at the same time, although the wireless terminal device will only form a connection with one of the access points, the transmission signals of other access points will still cause interference to the wireless terminal device. The above problem is becoming more serious in the trend of increasingly dense access point distribution.
Disclosure of Invention
One of the objectives of the present disclosure is to provide a network master control apparatus and a network communication method to implement a cooperative service set.
One of the objectives of the present disclosure is to provide a network master control apparatus and a network communication method, so as to improve the data throughput of the entire network.
One of the objectives of the present disclosure is to provide a network master control device and a network communication method to reduce interference to the wireless terminal device. An embodiment of the network master device comprises a control circuit capable of controlling a plurality of wireless service devices, wherein the wireless service devices simultaneously maintain wireless connection with a wireless terminal device, and the control circuit is configured to perform the following steps: receiving a plurality of uplink packets through at least one service set port, and sending a transmission packet to an external network through an external network port according to at least one of the uplink packets, wherein the uplink packets are respectively from the wireless service devices, and a source address of each uplink packet is an address of the wireless terminal device; and sending at least one downlink packet to at least one of the plurality of wireless service devices through the at least one service set port according to a received packet from the external network, wherein a target address of each downlink packet is the address of the wireless terminal device.
Another embodiment of a method for network communication of a collaborative service set includes: controlling a plurality of wireless service devices through a network master control device, wherein the wireless service devices simultaneously maintain wireless connection with a wireless terminal device; receiving a plurality of uplink packets through the network master control device; sending a transmission packet to an external network through the network master control device according to at least one of the uplink packets, wherein the uplink packets are respectively from the wireless service devices, and a source address of each uplink packet is an address of the wireless terminal device; and sending at least one downlink packet to at least one of the plurality of wireless service devices through the network master control device according to a received packet from the external network, wherein a target address of each downlink packet is the address of the wireless terminal device.
The features, implementations and effects of the present invention will be described in detail with reference to the drawings.
Drawings
FIG. 1 illustrates a network system including one embodiment of a network master of the present invention;
FIG. 2 illustrates steps performed by the control circuit of FIG. 1;
FIG. 3a illustrates an embodiment of a connection between a network master and a wireless serving device;
FIG. 3b illustrates another embodiment of a connection between a network master and a wireless serving device; and
fig. 4 shows an embodiment of the network communication method of the present disclosure.
Detailed Description
A network master control device and a network communication method are disclosed, which can control a plurality of wireless Service devices to simultaneously maintain wireless connection between the wireless Service devices and a wireless terminal device, thereby implementing a Cooperative Service Set (Cooperative Service Set) having a Service range larger than that of any one of the wireless Service devices. In some embodiments, the network master is a device including the functions of an Open System Interconnection (OSI) network layer, such as a routing device (e.g., gateway, router) or its equivalent; each wireless service device is a device that can normally operate in the present invention without OSI layers above the network layer, or a device that can normally operate in the present invention without OSI layers above the data link layer, such as an access point (access point) or its equivalent device with/without Multiple-Input Multiple Output (MIMO) function; the wireless terminal device is an electronic product with wireless network function and with/without MIMO function, such as a computer, a mobile phone, etc.
Fig. 1 shows a network system 10 including an embodiment of the network master device. The network system 10 of fig. 1 is connected to an external network 12 (e.g., the internet or a local area network), and includes a network host 100, a plurality of wireless service devices 14, and a wireless terminal device 16. The network master 100 includes a control Circuit 110 (or Media layer Circuit). The control circuit 110 includes a physical layer circuit 112, a data link layer circuit 114, and a network layer circuit 116, and these circuits 112, 114, and 116 realize functions of each layer of the OSI physical layer, the data link layer, and the network layer. Generally, the data link layer Circuit 114 includes a Medium Access Control Circuit (Medium Access Control Circuit); the network layer circuit 116 includes a processor, which may be a CISC architecture, RISC architecture, or ASIC circuit. The general functions of the OSI physical layer, data link layer and network layer, the mac circuit and CISC and RISC architectures described above are well known in the art and details thereof are omitted herein.
FIG. 2 shows the steps performed by the control circuit 110 of FIG. 1 to achieve the present invention, which include:
s210: a plurality of uplink packets (uplink packets) are received through at least one service set port, and a transmission packet is sent to the external Network 12 through an external Network port (e.g., Wide Area Network port) according to at least one of the uplink packets, where the uplink packets are respectively sent from a plurality of wireless service devices 14 (in other words, each wireless service device 14 sends one of the uplink packets), and a Source Address (Source Address) of each uplink packet is an Address of the wireless terminal device 16.
In this step, one example of the at least one service set port is an ethernet port, another example is another known communication port (e.g., Token Bus) or a self-defined high-speed communication port, the at least one service set port can be a plurality of ports or a single port, and the control circuit 110 is connected to the plurality of wireless service devices 14 through the plurality of ports/single port respectively to receive the plurality of uplink packets at substantially the same time (which is characterized by a time difference smaller than a predetermined threshold, exceeding the circuit detection capability or having no physical significance) or different times, wherein the connection between the network host 100 and the plurality of wireless service devices 14 is a wired connection (e.g., an optical fiber, a coaxial cable or a twisted pair), which is not a limitation of the present application. In some embodiments, the connection between the network master 100 and the wireless service devices 14 may also be a wireless connection. The plurality of uplink packets are all originated from the same original uplink packet sent by the wireless end device 16, and the content of the data field of each uplink packet includes/is equal to all the content of the data field of the original uplink packet (for example, each uplink packet is the same as the original uplink packet), or the content of the data field of each uplink packet includes a part of the content of the data field of the original uplink packet. The control circuit 110 generates the transport packet according to at least one of the uplink packets through at least one of packet synchronization, reassembly, error correction and selection among multiple packets, and the content of the data field of the transport packet includes/is equal to all the content of the data field of the original uplink packet. Regarding the above-mentioned packet synchronization technique, in one embodiment, the control circuit 110 sends an uplink control signal (e.g., a synchronization signal, an interrupt (interrupt) signal or a polling (polling) signal) to each of the wireless serving devices 14, and the uplink control signal is used to allow the wireless serving devices 14 to respectively send the uplink packets to the network host 100 at substantially the same time or at different times. Regarding the above-mentioned packet reassembly, the mac circuits included in the data link layer circuit 114 may reassemble the uplink packets according to header information (e.g., fragment offset in the header information) of the uplink packets. Regarding the packet selection, in one embodiment, the control circuit 110 selects one of the uplink packets (e.g., selects the earliest correctly received uplink packet) according to a predetermined rule to generate the transmission packet; in another embodiment, the plurality of uplink packets are sent in the same and synchronized manner and received by the mac circuit of the data link layer 114 through the same port, so that the combination based on signal energy is equivalent to an enhanced uplink packet, which is more favorable for being received correctly. In another embodiment, the uplink packets are received and buffered by the mac circuits of the rlc layer 114 through different ports, so that more received information can be corrected for errors, thereby reducing the number of retransmissions.
S220: according to a received packet from the external network 12, at least one downlink packet is sent to at least one of the wireless service devices 14 through the at least one service set port, wherein a Destination Address (Destination Address) of each downlink packet is an Address of the wireless end device 16.
In this step, the at least one service set port may be a plurality of ports or a single port, and the mac circuit of the data link layer circuit 114 is connected to the plurality of wireless service devices 14 through the plurality of ports/the single port, respectively, to transmit the at least one downlink packet at the same time or at different times. The content of the data field of each downlink packet includes/is equal to all the content of the data field of the received packet, and each wireless service device 14 receiving the downlink packet forwards the downlink packet to the wireless end device 16, or each wireless service device 14 receiving the downlink packet forwards the downlink packet to the wireless end device 16 at substantially the same time or at different times according to a downlink control signal (such as a synchronization signal, an interrupt signal or a polling signal) from the network master 100. In one embodiment, when the at least one downlink packet includes a plurality of packets and the plurality of packets are the same, under the control of the network host 100, the plurality of wireless service devices 14 can synchronously send the plurality of packets to the wireless end device 16 according to respective transmission parameters (such as channel matrix, signal gain, noise cancellation, etc.), so that the wireless end device 16 receives the synthesized and enhanced downlink packet based on the combination of signal energies, which is more beneficial for the wireless end device 16 to correctly receive the downlink packet.
In one embodiment, the Basic Service Set Identifier (BSSID) of the wireless Service devices 14 (or MAC Address) are the same, and the connection settings (e.g., Service Set Identifier (SSID), security type (security type), and key) are the same, so that the wireless end device 16 treats the wireless Service devices 14 as the same device, and the wireless Service devices 14 form the aforesaid cooperative Service Set under the control of the network host 100 to provide a larger Service range to the wireless end device 16. In this embodiment, the transmission operation between the wireless end device 16 and the wireless service device 14 is the same as the current technology; while the transmission operation between the wireless service devices 14 and the network master 100 is substantially the same as the prior art, in more detail, as shown in fig. 3a, when the connection between each wireless service device 14 and the network master 100 is through independent paths (e.g. the at least one service set port is a plurality of ports), the transmission operation between each wireless service device 14 and the network master 100 may be the same as the prior art (e.g. IEEE 802.3) or different in transmission according to the aforementioned uplink/downlink control signals, and, as shown in fig. 3b, when the connection between each wireless service device 14 and the network master 100 uses a common path (e.g. the at least one service set port is a single port, the transmission operation between the wireless service devices 14 and the medium access control circuit is similar to the transmission operation through a bus), the transmission operation between each wireless service device 14 and the network master 100 differs in the transmission according to the aforementioned uplink/downlink control signal. It should be noted that, when each wireless service device 14 is responsible for transmitting only a portion of the content of the original uplink packet, the content of the uplink packet transmitted by each wireless service device 14 is assigned according to a predetermined assignment or according to the assignment of the network master control device 100, and then the network master control device 100 reassembles the uplink packets from each wireless service device 14.
In one embodiment, BSSIDs (or MAC addresses) of the wireless service devices 14 are different, connection settings (e.g., SSID, KEY) may be the same or different, but the wireless service devices 14 are associated with or can identify a common identifier, such as a group ID (group ID), a color grouping bit (color bit), a part of identifier (partial ID), an Address of the wireless end device 16, and so on, so that in uplink transmission, by making the original uplink packet include the common identifier, the common identifier can be used for the wireless service devices 14 to receive and process the original uplink packet and generate the uplink packets; in terms of downlink transmission, the wireless end device 16 may receive and process the at least one downlink packet regardless of which wireless service device 14 the at least one downlink packet originates from, as long as the destination address of the at least one downlink packet is the address of the wireless end device 16. Based on the above, even though the wireless terminal device 16 considers the wireless service devices 14 as different devices, the wireless service devices 14 can form the cooperative service set under the control of the network master device 100. In this embodiment, the transmission operation between the wireless end device 16 and each wireless server 14 can be the same as the current technology (e.g., IEEE 802.11); the transmission operation between each wireless service device 14 and the network master 100 is substantially the same as that of the current technology (e.g., IEEE 802.3, 802.4, etc.), and in more detail, when the connection between each wireless service device 14 and the network master 100 is through an independent path (as shown in fig. 3 a), the transmission operation between each wireless service device 14 and the network master 100 may be the same as that of the current technology or only different in terms of transmission according to the aforementioned uplink/downlink control signals, while when the connection between each wireless service device 14 and the network master 100 uses a common path (as shown in fig. 3 b), the transmission operation between each wireless service device 14 and the network master 100 is different in terms of transmission according to the aforementioned uplink/downlink control signals.
In one embodiment, the WIFI (IEEE 802.11) technology is used between each wireless service device 14 and the network host 100, and the ethernet (IEEE 802.3) technology is used between the network host 100 and the external network. In the above example, the phy layer circuit 112 includes a WIFI phy layer circuit and an ethernet phy layer circuit; the data link layer circuit 114 includes a WIFI mac circuit and an ethernet mac circuit; the network layer circuit 116 includes a processor for processing the conversion between WIFI and ethernet communication protocols (protocols).
In one embodiment, an ethernet (IEEE 802.3) technology is used between each wireless service device 14 and the network host 100, and a Digital Subscriber Line (DSL) technology is used between the network host 100 and the external network. In the above example, the phy layer circuit 112 includes an ethernet phy layer circuit and a DSL phy layer circuit; the data link layer circuit 114 includes an ethernet mac circuit and a DSL mac circuit; the network layer circuitry 116 includes a processor for processing the conversion between ethernet and DSL communication protocols (protocols).
In one embodiment, the MAC addresses of the wireless service DEVICEs 14 are different, however, under the control of the network host 100 and/or the setting of the user, the wireless service DEVICEs 14 report the same DEVICE information (e.g., a virtual MAC Address, DEVICE ID, BSSID, SSID) to the wireless terminal DEVICE 16, so that the wireless terminal DEVICE 16 can view the wireless service DEVICEs 14 as the same DEVICE. In this embodiment, the transmission operation between the devices can be known from the description of the foregoing embodiments.
In one embodiment, the control circuit 110 selects at least one of the wireless service devices 14 as at least one primary network device according to the connection status reports from the wireless service devices 14 (e.g., selects one or more of the wireless service devices 14 with the best connection status with the wireless end device 16 as the primary network device), and the control circuit 110 sends the at least one downlink packet to the at least one primary network device through the at least one service set port and receives the uplink packet through the at least one service set port. The connection status report is the signal strength, distance, transmission rate, modulation and coding, etc. of each wireless server 14 estimated or determined by each wireless server 14.
In one embodiment, the control circuit 110 performs Resource allocation (Resource allocation) according to a predetermined rule and/or according to connection status reports from a plurality of wireless service devices 14, respectively, to specify a transmission channel (e.g., a channel specified by the IEEE 802.11 standard), a transmission frequency band (e.g., a frequency band specified by the IEEE 802.11 standard), and the like between each/at least one wireless service device 14 and the wireless end device 16, thereby effectively utilizing transmission resources.
In one embodiment, the communication ports (at least one service set port, external network port, etc.) refer to physical ports; in another embodiment, the communication port refers to a logical port assigned and managed by the network master 100.
It should be noted that the foregoing embodiments are exemplified by one wireless terminal device, however, the present disclosure is also applicable to a plurality of wireless terminal devices. When the cooperative service set of the present disclosure includes a plurality of wireless terminal devices, the operation of each wireless terminal device is the same as or similar to the operation of the wireless terminal device 16; each wireless service device communicates with multiple wireless terminal devices at the same time/different times according to respective transmission parameters (such as channel matrix, signal gain, noise cancellation, etc.) under the control of the network master control device; the network master device may calculate and provide the transmission parameters according to the connection status report provided by each wireless service device, and when a plurality of wireless service devices communicate with a plurality of wireless terminal devices at the same time, the conventional Multi-User Multiple-Input Multiple-Output (MU-MIMO) and/or Multi-User to Multi-User (Multi-User to Multi-User) techniques may be adopted to implement the communication operation.
It is to be noted that, when the implementation is possible, a person skilled in the art can selectively implement some or all of the technical features of any of the above embodiments, or selectively implement a combination of some or all of the technical features of the above embodiments, thereby increasing the flexibility in implementing the invention.
Fig. 4 shows an embodiment of a network communication method of the cooperative service set of the present disclosure, which includes the following steps:
s410: a network master control device controls a plurality of wireless service devices, wherein the wireless service devices simultaneously maintain wireless connection with a wireless terminal device.
S420: receiving a plurality of uplink packets through the network master control device;
s430: sending a transmission packet to an external network through the network master control device according to at least one of the uplink packets, wherein the uplink packets are respectively from the wireless service devices, and a source address of each uplink packet is an address of the wireless terminal device; and
s440: the network master control device sends at least one downlink packet to at least one of the plurality of wireless service devices according to a received packet from the external network, wherein a target address of each downlink packet is the address of the wireless terminal device.
Since the detailed implementation and the variations of the present invention can be understood by those skilled in the art with reference to the disclosure of the present invention, the technical features of the present invention can be reasonably applied to the present invention, and therefore, the repeated and redundant descriptions will be omitted herein without affecting the requirements and the feasibility of the present invention.
In summary, the network master control apparatus and the network communication method of the present disclosure can control a plurality of wireless service apparatuses to simultaneously maintain wireless connection between the plurality of wireless service apparatuses and a wireless terminal apparatus, thereby implementing a cooperative service set with a large service range to serve the wireless terminal apparatus.
Although the present invention has been described in detail, it should be understood that the invention is not limited to the embodiments, and that various changes and modifications can be made by those skilled in the art based on the teachings and implicit teachings of the present invention.
Description of the symbols
10 network system
12 external network
14 radio service device
16 radio terminal device
100 network master control device
110 control circuit
112 physical layer circuit
114 data link layer circuit
116 network layer circuit
S210-S220
S410 to S440.
Claims (8)
1. A network hosting device of a collaborative service set, comprising:
a control circuit capable of controlling a plurality of wireless service devices, wherein the plurality of wireless service devices simultaneously maintain wireless connection with a wireless terminal device, the control circuit is configured to perform the following steps:
receiving a plurality of uplink packets through at least one service set port, and sending a transmission packet to an external network through an external network port according to at least one of the uplink packets, wherein the uplink packets are respectively from the wireless service devices, and a source address of each uplink packet is an address of the wireless terminal device; and
sending at least one downlink packet to at least one of the plurality of wireless service devices through the at least one service set port according to a received packet from the external network, wherein a destination address of each downlink packet is an address of the wireless terminal device,
wherein the BSS IDs of the wireless service devices are the same or different, and the connection settings of the wireless service devices are the same when the BSS IDs of the wireless service devices are the same,
wherein the network master device includes functions of network layers of open system interconnection OSI, and each of the wireless service devices is a device which can normally operate without/without a layer higher than the network layer of OSI or a device which can normally operate without/without a layer higher than a data link layer of OSI.
2. The network master device of claim 1, wherein each of the plurality of upstream packets comprises a portion of the content of the transport packet, or the plurality of upstream packets are the same.
3. The network host apparatus of claim 1, wherein the control circuit sends the at least one downlink packet to the plurality of wireless service devices via the at least one service set port, respectively, and the at least one downlink packet is the same.
4. The network host apparatus of claim 1, wherein the control circuit sends uplink control signals to the wireless service apparatuses respectively, the uplink control signals being used to allow the wireless service apparatuses to send the uplink packets respectively.
5. The network host as claimed in claim 1, wherein the control circuit selects at least one of the wireless service devices as at least one primary network device according to the connection status reports from the wireless service devices, and the control circuit sends the at least one downlink packet to the at least one primary network device via the at least one service set port.
6. The network host of claim 1, wherein each of the plurality of wireless service devices transmits to and receives from the network host and the wireless end device at a level above a network layer and a network layer not interconnected by an open system, or at a level above a data link layer and a data link layer not interconnected by an open system.
7. A method for network communication of a collaborative service set, comprising the steps of:
controlling a plurality of wireless service devices through a network master control device, wherein the wireless service devices simultaneously maintain wireless connection with a wireless terminal device;
receiving a plurality of uplink packets through the network master control device;
sending a transmission packet to an external network through the network master control device according to at least one of the uplink packets, wherein the uplink packets are respectively from the wireless service devices, and a source address of each uplink packet is an address of the wireless terminal device; and
sending at least one downlink packet to at least one of the plurality of wireless service devices through the network master control device according to a received packet from the external network, wherein a destination address of each downlink packet is an address of the wireless terminal device,
wherein the BSS IDs of the wireless service devices are the same or different, and the connection settings of the wireless service devices are the same when the BSS IDs of the wireless service devices are the same,
wherein the network master device includes functions of network layers of open system interconnection OSI, and each of the wireless service devices is a device which can normally operate without/without a layer higher than the network layer of OSI or a device which can normally operate without/without a layer higher than a data link layer of OSI.
8. The method of claim 7, wherein the MAC addresses of the wireless serving devices are the same.
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