WO2014166201A1 - 多频段无线通信通信方法、协调设备以及网络 - Google Patents

多频段无线通信通信方法、协调设备以及网络 Download PDF

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Publication number
WO2014166201A1
WO2014166201A1 PCT/CN2013/082863 CN2013082863W WO2014166201A1 WO 2014166201 A1 WO2014166201 A1 WO 2014166201A1 CN 2013082863 W CN2013082863 W CN 2013082863W WO 2014166201 A1 WO2014166201 A1 WO 2014166201A1
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WO
WIPO (PCT)
Prior art keywords
coordination device
receiving end
subnet
frequency band
link
Prior art date
Application number
PCT/CN2013/082863
Other languages
English (en)
French (fr)
Inventor
王谦
陈霖
禹忠
郭阳
Original Assignee
中兴通讯股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to US14/903,487 priority Critical patent/US9900922B2/en
Publication of WO2014166201A1 publication Critical patent/WO2014166201A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/14—Direct-mode setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/26—Cell enhancers or enhancement, e.g. for tunnels, building shadow
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/04—Terminal devices adapted for relaying to or from another terminal or user
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices
    • H04W88/10—Access point devices adapted for operation in multiple networks, e.g. multi-mode access points

Definitions

  • Multi-band wireless communication communication method coordination device and network
  • the present invention relates to the field of wireless communications, and in particular, to a multi-band wireless communication communication method, a coordination device, and a network.
  • Wi-Fi Wireless Fidelity wireless communication technology
  • Wi-Fi technology standard consists of The Institute of Electrical and Electronic Engineers (IEEE) 802.11 working group is responsible for the development of communication bands mainly for 2.4 GHz and 5 GHz.
  • IEEE 802.11 working group is responsible for the development of communication bands mainly for 2.4 GHz and 5 GHz.
  • Wi-Fi equipment is almost a standard configuration component of terminal equipment.
  • the popularity of high-definition video technology and the development of high-speed, large-data communication technology the lower transmission rate of pure Wi-Fi network can not meet the practical application. demand.
  • the advantage of 60 GHz technology is that the transmission bandwidth is large and the transmission rate can reach the gigabit level. However, its propagation beam is narrow and the penetration is poor. Therefore, the antenna array and beamforming technology are used to enable the beam to propagate along the line of sight or along the specified direction. The reflection path bypasses the obstacle and reaches the receiving end.
  • 60 GHz technical standards is accelerating, and several standards organizations have developed technical specifications for their respective 60 GHz communications, such as IEEE 802.11ad, IEEE 802.15.3c, and the European Computer Manufactures Association (ECMA). ) -387.
  • Wi-Fi Wireless Fidelity
  • Wi-Fi Direct Wi-Fi Direct
  • Wi-Fi Direct the traditional low-band Wi-Fi technology
  • Wi-Fi can effectively complement the 60 GHz technology, and will support the hybrid communication network of the two. Use, establish a multi-band communication link to meet more diverse communication needs.
  • the embodiment of the invention provides a multi-band wireless communication communication method, a coordination device and a network, so as to solve the technical problem that the multi-band communication has too high requirements on the terminal.
  • the embodiment of the present invention provides a multi-band wireless communication method, which is applied to a coordination device that supports multi-band communication, wherein the coordination device manages a node resource information table, where the node resource information table includes a subnet where the coordination device is located, and Terminal information of other subnets; the method includes:
  • the coordination device receives a link establishment request
  • the coordination device responds to the link establishment request according to the node resource information table, and commands the transmitting end and the receiving end to establish a point-to-point connection or coordinately establish a relay link between the transmitting end and the receiving end;
  • the coordinating device When the coordinating device is a relay node, the coordinating device receives and forwards the received data message.
  • the terminal information includes identifier information for identifying the terminal and the subnet where the terminal is located;
  • the link establishment request includes the identifier information of the sending end and the identifier information of the receiving end;
  • the responding device responding to the link establishment request includes:
  • the coordination device responds to the link establishment request.
  • the relay link between the sending end and the receiving end that the coordination device assists in establishing includes: a forward relay link from the coordinating device to the transmitting end, and a backward relay link that coordinates the device to the receiving end. ; or,
  • the receiving, by the harmonizing device, the received data packet includes: when the frequency bands of the forward relay link and the backward relay link of the coordination device are different, the coordinated device is configured to receive data The message is converted and then forwarded.
  • the terminal information further includes frequency band information supported by the terminal;
  • the link establishment request further includes requesting frequency band information;
  • Receiving and forwarding the received data message by the coordinating device includes:
  • the coordinated device of the subnet where the transmitting end is located or the coordinated device of the subnet where the receiving end is located converts the received data packet and then forwards the received data packet.
  • the terminal information further includes frequency band information supported by the terminal;
  • the link establishment request further includes requesting frequency band information;
  • the coordination device supports two bands of wireless fidelity WiFi and 60 GHz;
  • the coordinating device responding to the link establishment request according to the node resource information table includes:
  • the coordinating device establishes a first relay link to the transmitting end and a second relay link to the receiving end;
  • the transmitting end is configured to establish a point-to-point connection with the receiving end; if it is located in a different subnet, the coordinating device of the subnet where the transmitting end is located forwards the link to the coordinating device of the subnet where the receiving end is located Establishing a request, and the coordinating device of the subnet where the sending end is located establishes a first relay link to the sending end, the coordinating device of the subnet where the receiving end is located establishes a second relay link to the receiving end, and sends The coordinating device of the subnet where the end is located establishes a third relay link to the coordinating device of the subnet where the receiving end is located.
  • the terminal information further includes frequency band information supported by the terminal;
  • the link establishment request further includes requesting frequency band information;
  • the coordination device supports two frequency bands of WiFi and 60 GHz; and when the requested frequency band information is WiFi,
  • the coordination device responds to the node resource information table according to the node
  • the link establishment request includes:
  • the coordinating device establishes a first relay link to the transmitting end and a second relay link to the receiving end, or commands the transmitting end to establish a point-to-point connection with the receiving end;
  • the coordinating device determines whether the transmitting end and the receiving end are in the same subnet; if located in the same subnet, the coordinating device establishes a first relay link to the sending end and a second relay link to the receiving end a relay link; if it is located in a different subnet, the coordination device of the subnet where the sender is located forwards the link establishment request to the coordination device of the subnet where the receiver is located, and the coordination device of the subnet where the receiver is located is established to the sender. a first relay link and a second relay link to the receiving end.
  • the terminal information further includes point-to-point capability information
  • the coordinating device commands the sender and the receiver to establish a point-to-point connection, including:
  • the coordination device commands the transmitting end to establish a point-to-point connection with the receiving end.
  • the embodiment of the present invention further provides a coordination device, which supports multi-band communication, and includes: an information management unit, configured to: a management node resource information table, where the node resource information table includes a subnet where the coordination device is located, and other Terminal information of the subnet;
  • a request receiving unit configured to: receive a link establishment request
  • a request response unit configured to: respond to the link establishment request according to the node resource information table, and instruct the sender and the receiver to establish a point-to-point connection or coordinate to establish a relay link between the sender and the receiver; as well as
  • the message forwarding unit is configured to: when the coordination device is a relay node, receive and forward the received data message.
  • the terminal information includes identifier information for identifying the terminal and the subnet where the terminal is located;
  • the link establishment request includes the identifier information of the sending end and the receiving end;
  • the request response unit is configured to respond to the link establishment request in the following manner: if the sender is located in a subnet where the sender is located, or the link establishment request is from a coordination device of a subnet where the sender is located And responding to the link establishment request.
  • the relay link between the sending end and the receiving end that the request response unit assists in establishing includes:
  • the coordinating device to the forward relay link of the coordinating device connected to the transmitting end and the backward relay link of the coordinating device to the receiving end.
  • the message forwarding unit is configured to receive and forward the received data message in the following manner:
  • the received data packet is converted and then forwarded.
  • the terminal information further includes frequency band information supported by the terminal;
  • the link establishment request further includes requesting frequency band information;
  • the packet forwarding unit is configured to receive and forward the received data message in the following manner: when the requested frequency band information is incompatible with the frequency band information supported by the receiving end, and the coordinated device is used as the sending end When the coordination device of the subnet is located or the coordination device of the subnet where the receiver is located, the received data packet is converted and then forwarded.
  • the terminal information further includes frequency band information supported by the terminal;
  • the link establishment request further includes requesting frequency band information;
  • the coordination device supports two bands of wireless fidelity WiFi and 60 GHz;
  • the request response unit includes:
  • a compatibility determining unit configured to: determine, according to the node resource information table, compatibility between the frequency band information supported by the receiving end and the requested frequency band information;
  • a cross-subnet determining unit configured to: when the requested frequency band information is 60 GHz and the determination is compatible, or when the requested frequency band information is WiFi and the determination is incompatible, determining whether the transmitting end and the receiving end are located in the same subnet;
  • the request forwarding unit is configured to: the coordination device acts as a coordination device of the subnet where the transmitting end is located, and the requested frequency band information is 60 GHz, and the cross-subnet or the requested frequency band information is determined to be WiFi, and when the cross-subnet is determined, the receiver is located at the receiving end.
  • the coordination device of the network forwards the link establishment request;
  • a link establishing unit configured to: establish a point-to-point connection or establish a relay link between the transmitting end and the receiving end;
  • the link establishing unit is configured to instruct the transmitting end and the receiving end to establish a point-to-point connection or a relay link in the following manner:
  • the first relay link to the transmitting end is established. And a second relay link to the receiving end;
  • the transmitting end is configured to establish a point-to-point connection with the receiving end;
  • the coordinating device acts as a coordinating device of the subnet where the transmitting end is located, the first relay link to the transmitting end and the coordinating device to the subnet where the receiving end is located are established. a third relay link; if the coordinating device acts as a coordinating device of the subnet where the receiving end is located, establishing a second relay link to the receiving end and a third device to the coordinating device of the subnet where the transmitting end is located Following the link;
  • the coordination device When the requested frequency band information is WiFi and the cross-subnet is determined, if the coordination device is used as a coordination device of the subnet where the receiving end is located, the first relay link to the transmitting end and the second relay to the receiving end are established. link.
  • the terminal information further includes point-to-point capability information
  • the link establishing unit is configured to instruct the transmitting end and the receiving end to establish a point-to-point connection in the following manner:
  • the embodiment of the present invention further provides a multi-band wireless communication network, including: at least two subnets, wherein each subnet includes:
  • the coordination device as described above is configured to: support communication of at least two frequency bands; and at least two terminals, wherein each terminal supports communication of at least one frequency band.
  • the multi-band wireless communication network, the coordination device, and the communication method according to the embodiments of the present invention use a coordination device that supports communication of at least two frequency bands, and does not require the communication capability of the terminal communication to have multiple frequency bands, that is, the multi-band can be realized by the coordination device.
  • Mixed networking BRIEF abstract
  • FIG. 1 is a schematic diagram of a multi-band wireless communication network according to an embodiment of the present invention.
  • FIG. 2 is a schematic diagram of a module structure of a coordination device according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of terminal information of a node resource information table
  • FIG. 4 is a schematic diagram of a module structure of a coordination device according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of a multi-band wireless communication method according to an embodiment of the present invention.
  • 6 and 7 are schematic diagrams showing a processing procedure of a coordination device when a request frequency band is 60 GHz and WiFi according to an embodiment of the present invention
  • the multi-band wireless communication network of the embodiment of the present invention includes at least two subnets, and FIG. 1 shows five subnets, wherein each subnet includes:
  • Coordinating equipment for supporting communication in at least two frequency bands
  • At least two terminals wherein the terminal supports communication of at least one frequency band.
  • Figure 1 shows the application scenario of a close-range wireless communication network in multiple rooms in a typical indoor environment. Due to wall obstruction between rooms, it is impossible to perform 60 GHz LOS (Line Of Sight, across rooms). For line-of-sight communication, a coordination device can be installed at the center of the corridor ceiling and at the intersection of the room and the corridor to establish a relayed 60 GHz link.
  • 60 GHz LOS Line Of Sight, across rooms.
  • a coordination device can be installed at the center of the corridor ceiling and at the intersection of the room and the corridor to establish a relayed 60 GHz link.
  • each coordination device manages a subnet, and the coordination device supports multi-band communication.
  • the coordination device includes:
  • the information management unit 21 is configured to manage a node resource information table, where the node resource information table includes terminal information of the subnet where the coordination device is located and other subnets;
  • a request receiving unit 22 configured to receive a link establishment request
  • a request response unit 23 configured to respond to the link establishment request according to the node resource information table, and instruct the sender and the receiver to establish a point-to-point connection or coordinate to establish a relay link between the sender and the receiver; as well as
  • the message forwarding unit 24 is configured to receive and forward the received data message when the coordination device is a relay node.
  • the terminal information includes identifier information for identifying the terminal and the subnet where the terminal is located, and the identifier information may be a character string, part of the string is used to identify the subnet where the terminal is located, and another part is used to identify the subnet.
  • the terminal establishment request includes the identifier information of the sending end and the identifier information of the receiving end;
  • the request response unit 23 is configured to respond to the link establishment request in the following manner: if the sender is located in a subnet where the sender is located, or the link establishment request is from a coordination device of a subnet where the sender is located, Responding to the link establishment request.
  • the coordination device of the other subnet may receive the link, except that the coordination device of the subnet where the sender is located can receive the link establishment request.
  • Establishing a request in order to simplify the processing, when the coordination device receiving the link establishment request determines that both the sender and the receiver are not in the subnet to which the coordination device belongs, the link establishment request is not processed, and when the link establishment request crosses
  • the coordination device on the subnet where the sender is located sends a link setup request to the coordination device on the subnet where the receiver is located.
  • the coordination device on the subnet where the receiver is located processes the link setup request.
  • the coordination device acts as a relay node, and the relay link between the sender and the receiver that the request response unit 23 of the coordination device assists in establishing includes:
  • the coordinating device to the forward relay link of the coordinating device connected to the transmitting end and the backward relay link of the coordinating device to the receiving end.
  • the packet forwarding unit 24 converts the received data packet and then forwards the data packet. This enables communication between terminals supporting different frequency bands by coordinating the device's conversion and forwarding functions.
  • the terminal information includes, in addition to the identifier information, frequency band information supported by the terminal; the link establishment request further includes requesting frequency band information;
  • the packet forwarding unit 24 performs the received data packet. Forward after conversion.
  • the function of the request response unit 23 will be described below by taking the two devices of the coordination device supporting WiFi and 60 GHz as an example.
  • the coordination equipment in the network must be equipped with a Wi-Fi function module and a 60 GHz function module.
  • the Wi-Fi module and the 60 GHz module can be integrated independently of each other in the same coordination device, or can be shared by the underlying independent, high-level (Physical (PHY) layer independent, Media Access Control (MAC) layer or more; or PHY
  • PHY Physical
  • MAC Media Access Control
  • the layer, the MAC layer are independent, and the radio link control (RLC) layer is shared by the same coordination device. Terminals in each room are not mandatory to have both Wi-Fi modules and 60 GHz modules.
  • the terminal information further includes frequency band information supported by the terminal;
  • the link establishment request further includes requesting frequency band information;
  • the coordination device supports two frequency bands of WiFi and 60 GHz, as shown in FIG.
  • the request response unit 23 includes: a compatibility determining unit 231, configured to determine, according to the node resource information table, compatibility between the frequency band information supported by the receiving end and the requested frequency band information;
  • the cross-subnet determining unit 232 is configured to determine whether the transmitting end and the receiving end are located in the same subnet when the requested frequency band information is 60 GHz and the judgment is compatible, or the requested frequency band information is WiFi and the determination is incompatible;
  • the request forwarding unit 233 is configured to use the coordination device as a coordination device of the subnet where the transmitting end is located, request the frequency band information to be 60 GHz, and determine that the cross-subnet or the requested frequency band information is WiFi, and when determining the cross-subnet, the receiver is located at the receiving end.
  • the coordination device of the network forwards the link establishment request;
  • a link establishing unit 2344 configured to instruct the transmitting end and the receiving end to establish a point-to-point connection or establish a relay link;
  • the link establishing unit 234 is configured to command the transmitting end and the receiving end to establish a point-to-point connection or establish a relay link in the following manner:
  • the first relay link to the transmitting end is established. And a second relay link to the receiving end;
  • the transmitting end is instructed to establish a point-to-point connection with the receiving end;
  • the coordinating device acts as a coordinating device of the subnet where the transmitting end is located, the first relay link to the transmitting end and the coordinating device to the subnet where the receiving end is located are established. a third relay link; if the coordinating device acts as a coordinating device of the subnet where the receiving end is located, establishing a second relay link to the receiving end and a third device to the coordinating device of the subnet where the transmitting end is located Following the link;
  • the coordination device When the requested frequency band information is WiFi and the cross-subnet is determined, if the coordination device is used as a coordination device of the subnet where the receiving end is located, the first relay link to the transmitting end and the second relay to the receiving end are established. link.
  • the terminal information further includes point-to-point capability information, where the receiving end is compatible with the requested frequency band information, and the transmitting end and the receiving end both have a point-to-point capability, the coordination device commands the sending end and the The receiving end establishes a point-to-point connection.
  • point-to-point capability information where the receiving end is compatible with the requested frequency band information, and the transmitting end and the receiving end both have a point-to-point capability
  • the coordination device commands the sending end and the The receiving end establishes a point-to-point connection.
  • the multi-band wireless communication method of the embodiment of the present invention is described below.
  • the method is applied to a coordination device supporting multi-band communication.
  • the coordination device manages a node resource information table, and the node resource information table includes the coordination device.
  • Terminal information of the subnet and other subnets as shown in Figure 5, the method includes the following steps:
  • Step 501 The coordination device receives a link establishment request.
  • Coordinating the link setup request received by the device may come from the sender or from the coordination device on the subnet where the sender is located.
  • Step 502 The coordination device responds to the link establishment request according to the node resource information table, and the command sending end and the receiving end establish a point-to-point connection or coordinately establish a relay link between the transmitting end and the receiving end.
  • the terminal information includes identification information for identifying the terminal and the subnet where the terminal is located, where the link establishment request includes the identification information of the sending end and the receiving end; and the coordination device responding to the link establishment request includes:
  • the coordinating device responds to the link establishment request.
  • the relay link between the sending end and the receiving end that the coordination device assists in establishing includes: a forward relay link from the coordinating device to the transmitting end, and a backward relay link that coordinates the device to the receiving end. ; or,
  • the coordinating device to the forward relay link of the coordinating device connected to the transmitting end and the backward relay link of the coordinating device to the receiving end.
  • Step 503 When the coordination device is a relay node, receive and forward the received data packet.
  • the coordination device converts the received data packet and then forwards the data packet.
  • the terminal information further includes frequency band information supported by the terminal;
  • the link establishment request further includes requesting frequency band information; and when the requested frequency band information is incompatible with the frequency band information supported by the receiving end, The coordination device on the subnet where the sender is located or the coordination device on the subnet where the receiver is located converts the received data packets and then forwards them.
  • the coordinating device determines whether the communication band of the transmitting and receiving parties is compatible by querying the node resource information table.
  • the terminal information further includes frequency band information supported by the terminal;
  • the link establishment request further includes requesting frequency band information; and the following describes the case where the coordination device supports two frequency bands of WiFi and 60 GHz, if the requested frequency band information is 60 GHz
  • the responding device responds to the link establishment request according to the node resource information table, and includes the following steps:
  • Step 601 The coordination device determines, according to the node resource information table, compatibility between the frequency band information supported by the receiving end and the requested frequency band information.
  • Step 602 If not compatible, the coordinating device establishes a first relay link to the sending end and a second relay link to the receiving end.
  • Step 603 If it is compatible, determine whether the sending end and the receiving end are located in the same subnet.
  • Step 604 If the same subnet is located, the sending end is configured to establish a point-to-point connection with the receiving end.
  • Step 605 If the sub-subnet is used, the coordinating device of the subnet where the sending end is located forwards the link establishment request to the coordinating device of the subnet where the receiving end is located, and the coordinating device of the subnet where the sending end is located is established to the first end of the sending end. Following the link, the coordinating device of the subnet where the receiving end is located establishes a second relay link to the receiving end, and the coordinating device of the subnet where the transmitting end is located is established in the third device of the coordinating device of the subnet where the receiving end is located. Following the link.
  • the coordination device responds to the link establishment request according to the node resource information table, and includes the following steps:
  • Step 701 The coordination device determines, according to the node resource information table, compatibility between the frequency band information supported by the receiving end and the requested frequency band information.
  • Step 702 If compatible, the coordination device establishes a first relay link to the sending end and a second relay link to the receiving end, or commands the sending end to establish a point-to-point connection with the receiving end. .
  • Step 703 If not, determine whether the sending end and the receiving end are located in the same subnet.
  • Step 704 If the same subnet is located, the coordinating device establishes a first relay link to the sending end and a second relay link to the receiving end.
  • Step 705 If the sub-subnet is used, the coordinating device of the subnet where the sending end is located forwards the link establishment request to the coordinating device of the subnet where the receiving end is located, and the coordinating device of the subnet where the receiving end is located establishes the first relay to the sending end. a link and a second relay link to the receiving end.
  • the terminal information further includes point-to-point capability information, where the frequency band information supported by the receiving end is compatible with the requested frequency band information, and the transmitting end and the receiving end both have a point-to-point capability, the coordination device commands the sending The terminal establishes a point-to-point connection with the receiving end.
  • the terminal communication is not required to have the communication capability of multiple frequency bands, that is, the multi-band hybrid networking can be realized by the coordination device, for example, the Wi-Fi frequency band and The 60 GHz band mixes the network and can solve the 60 GHz transmission problem between different subnets.
  • FIG. 8 is a terminal 801 supporting only Wi-Fi communication in the same subnet.
  • Schematic diagram of the link established by the terminal 802 supporting only 60 GHz communication Since the communication band of the terminal 801 and the terminal 802 is incompatible, a point-to-point link cannot be established, and the coordination link must be established by the coordination device 803.
  • the terminal sending end 801 sends a setup link establishment request to the coordination device 803 of the subnet, where the request includes the terminal information of the sender 801 and the receiver 802 and the established WiFi band link.
  • the coordination device 803 is configured according to the node resource information table. Judging the compatibility of the communication band of both the transceiver and the receiver;
  • the coordinating device 803 instructs the transmitting and receiving parties to establish a relay link through the coordinating device 803, wherein a WiFi relay link is established with the terminal transmitting end 801, and a 60 GHz relay link is established with the terminal receiving end 802.
  • the transmitting end 801 and the receiving end 802 confirm the command, establish a communication link, and perform communication, wherein the forward relay link of the coordination device 803 is a WiFi relay link, and the backward relay link is a 60 GHz relay link.
  • the frequency band is incompatible, so the coordination device 803 needs to convert the received data message before forwarding.
  • the transmitting end 901 requests to establish a link establishment request for the frequency band supported by the transceiver end 902.
  • the coordinating device 903 instructs the receiving end 902 to establish a 60 GHz point-to-point connection with the transmitting end 901.
  • the coordination device 1003 commands the receiving end 1002 to establish a WiFi point-to-point connection with the transmitting end 1001 because the communication band of the transmitting end 1001 is compatible with the receiving end 1002.
  • the terminal transmitting end and the receiving end support the WiFi communication at the same time, at least one end does not have the point-to-point link establishing capability, and the transmitting end and the receiving end are located in the same subnet, and the transmitting end requests to establish and the transmitting end.
  • the link establishment request of the supported frequency band is compatible
  • the communication band of the transmitting end and the receiving end is compatible, but at least one end does not have the point-to-point link establishing capability
  • the coordinating device establishes a relay link with the transmitting end, wherein the terminal and the transmitting end respectively
  • the terminal receiving end establishes a WiFi relay link.
  • the coordinating device also acts as a relay node, the coordinating device does not need to convert the received data message because its forward relay link is compatible with the backward relay link frequency band.
  • the terminal transceiver only supports 60 GHz communication, but the sender and receiver are located on different subnets.
  • the link establishment request of the terminal transmitting end 1101 is transmitted to the coordinating device 1103 of the subnet where the terminal is located. Since both the transmitting and receiving sides support 60 GHz communication, the request is transmitted to the coordinating device of the subnet where the receiving end 1102 is located. 1104, eventually establishing a complete communication link.
  • the terminal sending end 1101 sends a link establishment request to the coordinating device 1103 of the subnet where the request includes the terminal information of the terminal sending end and the receiving end of the terminal and the required communication mode;
  • the coordination device 1103 determines the frequency band compatibility; When the terminal receiving end 1102 supports 60 GHz communication and crosses the subnet, the coordinating device 1103 forwards the link establishment request to the coordinating device 1104 according to the local node resource information table;
  • the coordinating device 1103 establishes a 60 GHz relay link with the terminal transmitting end 1101, and establishes a 60 GHz relay link with the coordinating device 1104, and the coordinating device 1104 establishes a 60 GHz relay link with the terminal receiving end 1102.
  • a terminal has a relay function, it can also act as a relay node.
  • the node source information table can add information such as the service status and service type of the node, and provide reference for route calculation.
  • the relay node in the embodiment of the present invention is not limited to the transit function to meet the communication band compatibility. For example, when the point-to-point link is occluded, the relay node can also act as a transit node to establish a relay link. If the Wi-Fi Direct link is not supported between compatible WiFi terminals, the relay node can also be used as a route. For the sake of simplicity, these embodiments are not discussed in the embodiments of the present invention.
  • the terminal may request the coordination device to replace the communication link. For example, when the LOS link quality drops, the coordinating device can coordinate the LOS link to switch to the relay link.
  • a hybrid networking of multiple frequency bands can be implemented by using a coordination device.

Abstract

一种多频段无线通信通信方法、协调设备以及网络。所述方法应用于支持多频段通信的协调设备，其中，所述协调设备管理节点资源信息表，所述节点资源信息表包括该协调设备所在子网以及其他子网的终端信息；所述方法包括：所述协调设备接收链路建立请求；所述协调设备根据所述节点资源信息表响应所述链路建立请求，命令发送端和接收端建立点到点连接或协调建立发送端和接收端之间的中继链路；以及所述协调设备为中继节点时，接收并转发接收到的数据报文。

Description

多频段无线通信通信方法、 协调设备以及网络
技术领域
本发明涉及无线通信领域， 尤其涉及一种多频段无线通信通信方法、 协 调设备以及网络。
背景技术
Wi-Fi ( Wireless Fidelity, 无线保真）无线通信技术是一种可以将个人电 脑、 手持设备（如， 平板电脑、 手机）等近距终端以无线方式组网的技术， Wi-Fi技术标准由国际标准组织电气与电子工程师协会 ( Institute of Electrical and Electronic Engineers, IEEE ) 802.11 工作组负责制订， 通信频段主要为 2.4GHz和 5GHz。 当前， Wi-Fi设备几乎成了终端设备的标准配置组件， 然而 高清视频技术的普及和高速、 大数据量通信技术的发展， 单纯 Wi-Fi 网络较 低的传输速率越来越不能满足实际应用需求。
随着器件制造水平、工艺不断成熟，民用 60GHz无线通信技术应运而生，
60GHz技术的优势是传输带宽大、 传输速率可达到吉比特级， 但其传播波束 窄， 穿透性差， 因而多釆用天线阵列和波束形成技术， 使波束能够按照指定 方向沿视距传播或沿反射路径绕开障碍物到达接收端。 现阶段， 60GHz技术 标准制订工作正在加速进行，有多个标准组织制订了各自 60GHz通信的技术 规范， 如 IEEE802.11ad、 IEEE802.15.3c 以及欧洲的欧洲电脑制造商协会 ( European Computer Manufactures Association, ECMA ) -387。
不同于 60GHz技术， Wi-Fi技术能够穿透障碍物实现点到多点的广播通 信， 并且当前 Wi-Fi联盟已发布的 Wi-Fi直连（ Wi-Fi Direct )标准同样允许无 线设备无需通过路由器即可相互通信。 由此可见， 传统低频段的 Wi-Fi技术 (以下涉及的 Wi-Fi均指 2.4GHz和 /或 5GHz工作频段）与 60GHz技术能够 形成有效互补， 将支持二者的通信设备混合组网， 配合使用， 建立多频段的 通信链路， 能够满足更加多样化的通信需求。 当前， 已经有一些技术试图为 同一终端集成多个频段的通信模块， 以满足通信的兼容性需求， 这样固然能 够实现网络内各类型终端之间的无线通信， 但缺点是网络中的终端设备集成 了多个通信模块， 成本较高， 多个模块之间的协调工作也加大了终端设备的 负荷。 发明内容
本发明实施例提供一种多频段无线通信通信方法、 协调设备以及网络， 以解决多频段通信对终端要求过高的技术问题。
本发明实施例提供了一种多频段无线通信方法， 应用于支持多频段通信 的协调设备， 其中， 所述协调设备管理节点资源信息表， 所述节点资源信息 表包括该协调设备所在子网以及其他子网的终端信息； 该方法包括：
所述协调设备接收链路建立请求；
所述协调设备根据所述节点资源信息表响应所述链路建立请求， 命令发 送端和接收端建立点到点连接或协调建立发送端和接收端之间的中继链路； 以及
所述协调设备为中继节点时， 所述协调设备接收并转发接收到的数据报 文。
可选地，所述终端信息包括用于识别终端以及终端所在子网的标识信息； 所述链路建立请求包括所述发送端的标识信息和接收端的标识信息；
所述协调设备响应所述链路建立请求包括：
若所述发送端位于所述发送端所在子网， 或， 所述链路建立请求来自发 送端所在子网的协调设备， 则所述协调设备响应所述链路建立请求。
可选地，所述协调设备协助建立的发送端和接收端之间的中继链路包括： 所述协调设备到发送端的前向中继链路以及协调设备到接收端的后向中 继链路； 或，
所述协调设备到发送端的前向中继链路以及所述协调设备到与接收端连 接的协调设备的后向中继链路； 或，
所述协调设备到与发送端连接的协调设备的前向中继链路以及所述协调 设备到接收端的后向中继链路。 可选地， 所述协调设备接收并转发接收到的数据报文包括： 所述协调设备的前向中继链路和后向中继链路的频段不同时， 所述协调 设备对接收的数据报文进行转换后再转发。
可选地， 所述终端信息还包括所述终端支持的频段信息； 所述链路建立 请求还包括请求频段信息；
所述协调设备接收并转发接收到的数据报文包括：
所述请求频段信息与所述接收端支持的频段信息不兼容时， 所述发送端 所在子网的协调设备或接收端所在子网的协调设备对接收的数据报文进行转 换后再转发。
可选地， 所述终端信息还包括所述终端支持的频段信息； 所述链路建立 请求还包括请求频段信息； 所述协调设备支持无线保真 WiFi和 60GHz两个 频段；
请求频段信息是 60GHz时， 所述协调设备根据所述节点资源信息表响应 所述链路建立请求包括：
所述协调设备根据所述节点资源信息表判断所述接收端支持的频段信息 与所述请求频段信息的兼容性；
若不兼容， 则所述协调设备建立到所述发送端的第一中继链路以及到所 述接收端的第二中继链路；
若兼容， 则判断所述发送端与所述接收端是否位于同一子网；
若位于同一子网， 则命令所述发送端与所述接收端建立点到点连接； 若 位于不同子网， 则发送端所在子网的协调设备向接收端所在子网的协调设备 转发链路建立请求， 且发送端所在子网的协调设备建立到所述发送端的第一 中继链路， 所述接收端所在子网的协调设备建立到所述接收端的第二中继链 路， 以及发送端所在子网的协调设备建立到接收端所在子网的协调设备的第 三中继链路。
可选地， 所述终端信息还包括所述终端支持的频段信息； 所述链路建立 请求还包括请求频段信息； 所述协调设备支持 WiFi和 60GHz两个频段； 请求频段信息是 WiFi时，所述协调设备根据所述节点资源信息表响应所 述链路建立请求包括：
所述协调设备根据所述节点资源信息表判断所述接收端支持的频段信息 与所述请求频段信息的兼容性；
若兼容， 则所述协调设备建立到所述发送端的第一中继链路以及到所述 接收端的第二中继链路， 或命令所述发送端与所述接收端建立点对点连接； 若不兼容， 则判断所述发送端与所述接收端是否位于同一子网； 若位于同一子网， 则所述协调设备建立到所述发送端的第一中继链路以 及到所述接收端的第二中继链路； 若位于不同子网， 则发送端所在子网的协 调设备向接收端所在子网的协调设备转发链路建立请求， 且接收端所在子网 的协调设备建立到所述发送端的第一中继链路以及到所述接收端的第二中继 链路。
可选地， 所述终端信息还包括点对点能力信息；
所述协调设备命令发送端和接收端建立点到点连接包括：
所述接收端支持的频段信息与所述请求频段信息的兼容且发送端和接收 端都具备点对点能力时， 所述协调设备命令所述发送端与所述接收端建立点 对点连接。
本发明实施例还提供了一种协调设备， 支持多频段通信， 包括： 信息管理单元， 其设置成： 管理节点资源信息表， 其中， 所述节点资源 信息表包括该协调设备所在子网以及其他子网的终端信息；
请求接收单元， 其设置成： 接收链路建立请求；
请求响应单元， 其设置成： 根据所述节点资源信息表响应所述链路建立 请求， 命令发送端和接收端建立点到点连接或协调建立发送端和接收端之间 的中继链路； 以及
报文转发单元， 其设置成： 所述协调设备为中继节点时， 接收并转发接 收到的数据报文。
可选地，所述终端信息包括用于识别终端以及终端所在子网的标识信息； 所述链路建立请求包括所述发送端和接收端的标识信息； 所述请求响应单元是设置成以如下方式响应所述链路建立请求： 若所述发送端位于所述发送端所在子网， 或， 所述链路建立请求来自发 送端所在子网的协调设备， 则响应所述链路建立请求。
可选地， 所述请求响应单元协助建立的发送端和接收端之间的中继链路 包括：
所述协调设备到发送端的前向中继链路以及协调设备到接收端的后向中 继链路； 或，
所述协调设备到发送端的前向中继链路以及所述协调设备到与接收端连 接的协调设备的后向中继链路； 或，
所述协调设备到与发送端连接的协调设备的前向中继链路以及所述协调 设备到接收端的后向中继链路。
可选地， 所述报文转发单元是设置成以如下方式接收并转发接收到的数 据报文：
所述协调设备的前向中继链路和后向中继链路的频段不同时， 对接收的 数据报文进行转换后再转发。
可选地， 所述终端信息还包括所述终端支持的频段信息； 所述链路建立 请求还包括请求频段信息；
所述报文转发单元是设置成以如下方式接收并转发接收到的数据报文： 所述请求频段信息与所述接收端支持的频段信息不兼容时， 且所述协调 设备作为所述发送端所在子网的协调设备或接收端所在子网的协调设备时， 对接收的数据报文进行转换后再转发。
可选地， 所述终端信息还包括所述终端支持的频段信息； 所述链路建立 请求还包括请求频段信息； 所述协调设备支持无线保真 WiFi和 60GHz两个 频段；
所述请求响应单元包括：
兼容性判断单元， 其设置成： 根据所述节点资源信息表判断所述接收端 支持的频段信息与所述请求频段信息的兼容性； 跨子网判断单元， 其设置成： 请求频段信息是 60GHz且判断兼容时， 或 请求频段信息是 WiFi且判断不兼容时，判断所述发送端与所述接收端是否位 于同一子网；
请求转发单元， 其设置成： 所述协调设备作为发送端所在子网的协调设 备， 请求频段信息是 60GHz且判断跨子网或请求频段信息是 WiFi且判断跨 子网时， 向接收端所在子网的协调设备转发链路建立请求； 以及
链路建立单元， 其设置成： 命令发送端和接收端建立点到点连接或建立 中继链路；
其中， 所述链路建立单元是设置成以如下方式命令所述发送端和所述接 收端建立点到点连接或中继链路：
请求频段信息是 60GHz且判断不兼容时， 或， 请求频段信息是 WiFi时 且判断兼容时， 或， 请求频段信息是 WiFi时且判断同一子网时， 建立到所述 发送端的第一中继链路以及到所述接收端的第二中继链路；
请求频段信息是 60GHz且判断同一子网是， 或， 请求频段信息是 WiFi 时且判断兼容时， 命令所述发送端与所述接收端建立点到点连接；
请求频段信息是 60GHz且判断跨子网时， 若所述协调设备作为发送端所 在子网的协调设备， 建立到所述发送端的第一中继链路以及到接收端所在子 网的协调设备的第三中继链路； 若所述协调设备作为所述接收端所在子网的 协调设备， 建立到所述接收端的第二中继链路以及到发送端所在子网的协调 设备的第三中继链路；
请求频段信息是 WiFi时且判断跨子网时，若所述协调设备作为接收端所 在子网的协调设备， 建立到所述发送端第一中继链路以及到所述接收端的第 二中继链路。
可选地， 所述终端信息还包括点对点能力信息；
所述链路建立单元是设置成以如下方式命令发送端和接收端建立点到点 连接：
所述接收端支持的频段信息与所述请求频段信息的兼容且发送端和接收 端都具备点对点能力时， 命令所述发送端与所述接收端建立点对点连接。 本发明实施例还提供了一种多频段无线通信网络， 包括： 至少两个子网， 其中， 每个子网包括：
如上所述的协调设备， 其设置成： 支持至少两个频段的通信； 以及 至少两个终端， 其中， 每个终端支持至少一个频段的通信。
通过本发明实施例的多频段无线通信网络、 协调设备及通信方法， 利用 支持至少两个频段的通信的协调设备， 不要求终端通信具备多个频段的通信 能力， 即能够通过协调设备实现多频段的混合组网。 附图概述
图 1为本发明实施例的多频段无线通信网络的示意图；
图 2为本发明实施例的协调设备的模块结构的示意图；
图 3为节点资源信息表的终端信息的示意图；
图 4为本发明实施例的协调设备的模块结构的示意图；
图 5为本发明实施例的多频段无线通信方法的示意图；
图 6、 7为本发明实施例的请求频段为 60GHz和 WiFi时， 协调设备的处 理流程的示意图；
图 8-11为本发明应用实例中的链路示意图。
本发明的较佳实施方式
下文中将结合附图对本发明实施例进行详细说明。 需要说明的是， 在不 冲突的情况下， 本申请中的实施例及实施例中的特征可以相互任意组合。
本发明络实施例的多频段无线通信网络， 如图 1所示， 该通信网络包括 至少两个子网， 图 1中示出了 5个子网， 其中， 每个子网包括：
协调设备， 其用于支持至少两个频段的通信；
至少两个终端， 其中所述终端支持至少一个频段的通信。
图 1 所示为典型的室内环境中多个房间的近距无线通信网络的应用场 景， 由于房间之间有墙壁阻碍， 无法跨房间进行 60GHz LOS ( Line Of Sight, 视距）通信， 可在走廊天花板中心位置和房间与走廊的交接处分别安装协调 设备， 建立中继的 60GHz链路。
以下对本发明实施例的协调设备的模块结构进行说明， 如上所述， 每个 协调设备管理一个子网， 该协调设备支持多频段通信， 如图 2所示， 该协调 设备包括：
信息管理单元 21 , 其用于管理节点资源信息表， 其中， 所述节点资源信 息表包括该协调设备所在子网以及其他子网的终端信息；
请求接收单元 22, 其用于接收链路建立请求；
请求响应单元 23 , 其用于根据所述节点资源信息表响应所述链路建立请 求， 命令发送端和接收端建立点到点连接或协调建立发送端和接收端之间的 中继链路； 以及
报文转发单元 24, 其用于所述协调设备为中继节点时， 接收并转发接收 到的数据报文。
所述终端信息包括用于识别终端以及终端所在子网的标识信息， 该标识 信息可以是一个字符串， 该字符串的其中一部分用于识别该终端所在子网， 另一部分用于识别该子网内的该终端， 所述链路建立请求包括所述发送端的 标识信息和接收端的标识信息；
所述请求响应单元 23是设置成以如下方式响应所述链路建立请求： 若所述发送端位于其所在子网， 或， 所述链路建立请求来自发送端所在 子网的协调设备， 则响应所述链路建立请求。
对于请求 WiFi的链路建立请求， 因 WiFi的信号能力相对较强， 除发送 端所在子网的协调设备可接收到链路建立请求外， 其他子网的协调设备可能 也会接收到该链路建立请求， 为了简化处理， 当接收链路建立请求的协调设 备判断发送端和接收端均不在该协调设备所属子网内时， 对链路建立请求不 做处理， 而当链路建立请求跨子网时， 发送端所在子网的协调设备会向接收 端所在子网的协调设备发送链路建立请求， 接收端所在子网的协调设备对该 链路建立请求进行处理。
在无法建立发送端到接收端的点到点连接或默认建立中继连接时， 所述 协调设备作为中继节点，所述协调设备的请求响应单元 23协助建立的发送端 和接收端之间的中继链路包括：
所述协调设备到发送端的前向中继链路以及协调设备到接收端的后向中 继链路； 或，
所述协调设备到发送端的前向中继链路以及所述协调设备到与接收端连 接的协调设备的后向中继链路； 或，
所述协调设备到与发送端连接的协调设备的前向中继链路以及所述协调 设备到接收端的后向中继链路。
可选地， 所述协调设备的前向中继链路和后向中继链路的频段不同时， 所述报文转发单元 24对接收的数据报文进行转换后再转发。这使得支持不同 频段的终端之间可通过协调设备的转换转发功能实现通信。
可选地， 如图 3所示， 所述终端信息除包括标识信息外， 还包括所述终 端支持的频段信息； 所述链路建立请求还包括请求频段信息； 所述请求频段 信息与所述接收端支持的频段信息不兼容时， 所述协调设备作为所述发送端 所在子网的协调设备或接收端所在子网的协调设备时， 所述报文转发单元 24 对接收的数据报文进行转换后再转发。
以下以所述协调设备支持 WiFi和 60GHz两个频段为例， 对请求响应单 元 23的功能进行说明。
为了能够协调不同类型的通信需求（ Wi-Fi通信和 60GHz通信） ， 网络 中的协调设备须同时配备 Wi-Fi功能模块、 60GHz功能模块。 Wi-Fi模块和 60GHz模块可以相互独立地集成于同一协调设备， 或者以底层独立、 高层共 用 （物理（Physical, PHY )层独立， 媒体访问控制 （ Media Access Control, MAC )层以上共用； 或者 PHY层、 MAC层独立， 以及无线链路控制（Radio Link Control, RLC )层以上共用） 的方式集成于同一协调设备。 而各房间内 的终端并不强制同时配备 Wi-Fi模块和 60GHz模块。
如图 3所示， 所述终端信息还包括所述终端支持的频段信息； 所述链路 建立请求还包括请求频段信息； 所述协调设备支持 WiFi和 60GHz两个频段， 如图 4所示， 所述请求响应单元 23包括： 兼容性判断单元 231 , 其用于根据所述节点资源信息表判断所述接收端 支持的频段信息与所述请求频段信息的兼容性；
跨子网判断单元 232, 其用于请求频段信息是 60GHz且判断兼容时， 或 请求频段信息是 WiFi且判断不兼容时，判断所述发送端与所述接收端是否位 于同一子网；
请求转发单元 233 , 其用于所述协调设备作为发送端所在子网的协调设 备， 请求频段信息是 60GHz且判断跨子网或请求频段信息是 WiFi且判断跨 子网时， 向接收端所在子网的协调设备转发链路建立请求； 以及
链路建立单元 234, 其用于命令发送端和接收端建立点到点连接或建立 中继链路；
所述链路建立单元 234是用于以如下方式命令发送端和接收端建立点到 点连接或建立中继链路：
请求频段信息是 60GHz且判断不兼容时， 或， 请求频段信息是 WiFi时 且判断兼容时， 或， 请求频段信息是 WiFi时且判断同一子网时， 建立到所述 发送端的第一中继链路以及到所述接收端的第二中继链路；
请求频段信息是 60GHz且判断同一子网时， 或， 请求频段信息是 WiFi 时且判断兼容时， 命令所述发送端与所述接收端建立点到点连接；
请求频段信息是 60GHz且判断跨子网时， 若所述协调设备作为发送端所 在子网的协调设备， 建立到所述发送端的第一中继链路以及到接收端所在子 网的协调设备的第三中继链路； 若所述协调设备作为所述接收端所在子网的 协调设备， 建立到所述接收端的第二中继链路以及到发送端所在子网的协调 设备的第三中继链路；
请求频段信息是 WiFi时且判断跨子网时，若所述协调设备作为接收端所 在子网的协调设备， 建立到所述发送端第一中继链路以及到所述接收端的第 二中继链路。
可选地， 所述终端信息还包括点对点能力信息， 所述接收端与所述请求 频段信息的兼容且发送端和接收端都具备点对点能力时， 所述协调设备命令 所述发送端与所述接收端建立点对点连接。 本发明实施例中能够实现 Wi-Fi频段和 60GHz频段混合组网 , 而不要求 终端通信频段的兼容性， 且能实现跨子网的 60GHz通信。
以下对本发明实施例的多频段无线通信方法进行说明， 该方法应用于支 持多频段通信的协调设备， 如上所述， 所述协调设备管理节点资源信息表， 所述节点资源信息表包括该协调设备所在子网以及其他子网的终端信息 , 如 图 5所示， 该方法包括如下步骤：
步骤 501、 所述协调设备接收链路建立请求。
协调设备接收的链路建立请求， 可能来自于发送端， 也可能来自于发送 端所在子网的协调设备。
步骤 502、 所述协调设备根据所述节点资源信息表响应所述链路建立请 求， 命令发送端和接收端建立点到点连接或协调建立发送端和接收端之间的 中继链路。
所述终端信息包括用于识别终端以及终端所在子网的标识信息， 所述链 路建立请求包括所述发送端和接收端的标识信息； 所述协调设备响应所述链 路建立请求包括：
若所述发送端位于其所在子网， 或， 所述链路建立请求来自发送端所在 子网的协调设备， 则所述协调设备响应所述链路建立请求。
可选地，所述协调设备协助建立的发送端和接收端之间的中继链路包括： 所述协调设备到发送端的前向中继链路以及协调设备到接收端的后向中 继链路； 或，
所述协调设备到发送端的前向中继链路以及所述协调设备到与接收端连 接的协调设备的后向中继链路； 或，
所述协调设备到与发送端连接的协调设备的前向中继链路以及所述协调 设备到接收端的后向中继链路。
步骤 503、 所述协调设备为中继节点时， 接收并转发接收到的数据报文。 所述协调设备的前向中继链路和后向中继链路的频段不同时， 所述协调 设备对接收的数据报文进行转换后再转发。 可选地， 所述终端信息还包括所述终端支持的频段信息； 所述链路建立 请求还包括请求频段信息； 所述请求频段信息与所述接收端支持的频段信息 不兼容时， 所述发送端所在子网的协调设备或接收端所在子网的协调设备对 接收的数据报文进行转换后再转发。
协调设备通过查询节点资源信息表， 判断收发双方通信频段是否兼容。 所述终端信息还包括所述终端支持的频段信息； 所述链路建立请求还包 括请求频段信息； 以下对所述协调设备支持 WiFi和 60GHz两个频段的情形 进行说明， 若请求频段信息是 60GHz时， 如图 6所示， 所述协调设备根据所 述节点资源信息表响应所述链路建立请求包括如下步骤：
步骤 601、 所述协调设备根据所述节点资源信息表判断所述接收端支持 的频段信息与所述请求频段信息的兼容性。
步骤 602、 若不兼容， 则所述协调设备建立到所述发送端的第一中继链 路以及到所述接收端的第二中继链路。
步骤 603、 若兼容， 则判断所述发送端与所述接收端是否位于同一子网。 步骤 604、 若位于同一子网， 则命令所述发送端与所述接收端建立点到 点连接。
步骤 605、 若跨子网， 则发送端所在子网的协调设备向接收端所在子网 的协调设备转发链路建立请求， 且发送端所在子网的协调设备建立到所述发 送端的第一中继链路， 所述接收端所在子网的协调设备建立到所述接收端的 第二中继链路， 以及发送端所在子网的协调设备建立到接收端所在子网的协 调设备的第三中继链路。
若请求频段信息是 WiFi时， 如图 7所示， 所述协调设备根据所述节点资 源信息表响应所述链路建立请求包括如下步骤：
步骤 701、 所述协调设备根据所述节点资源信息表判断所述接收端支持 的频段信息与所述请求频段信息的兼容性。
步骤 702、 若兼容， 则所述协调设备建立到所述发送端的第一中继链路 以及到所述接收端的第二中继链路， 或命令所述发送端与所述接收端建立点 对点连接。 步骤 703、 若不兼容， 则判断所述发送端与所述接收端是否位于同一子 网。
步骤 704、 若位于同一子网， 则所述协调设备建立到所述发送端的第一 中继链路以及到所述接收端的第二中继链路。
步骤 705、 若跨子网， 发送端所在子网的协调设备向接收端所在子网的 协调设备转发链路建立请求， 且接收端所在子网的协调设备建立到所述发送 端第一中继链路以及到所述接收端的第二中继链路。
可选地， 所述终端信息还包括点对点能力信息， 所述接收端支持的频段 信息与所述请求频段信息的兼容且发送端和接收端都具备点对点能力时， 所 述协调设备命令所述发送端与所述接收端建立点对点连接。
本发明实施例的多频段无线通信网络、 协调设备及通信方法中， 不要求 终端通信具备多个频段的通信能力， 即能够通过协调设备实现多频段的混合 组网， 比如， Wi-Fi频段和 60GHz频段混合组网， 并能够解决不同子网间的 60GHz传输问题。
以下结合附图和应用实例对本发明实施方式的方法进行详细描述。
应用实例 1
该实施例中，如图 8所示，仅支持 Wi-Fi通信的终端 801与仅支持 60GHz 通信的终端 802位于同一子网， 图 8为同一子网内仅支持 Wi-Fi通信的终端 801与仅支持 60GHz通信的终端 802建立的链路示意图： 由于终端 801与终 端 802通信频段不兼容， 无法建立点对点链路， 须由协调设备 803协调， 建 立中继链路。
终端发送端 801向所在子网的协调设备 803发送建立链路建立请求， 该 请求包含了发送端 801与接收端 802的终端信息以及建立的 WiFi频段链路； 协调设备 803依据节点资源信息表， 判断终端收发双方通信频段的兼容 性；
若判断不兼容， 则协调设备 803命令收发双方通过协调设备 803建立中 继链路， 其中与终端发送端 801建立 WiFi中继链路， 与终端接收端 802建立 60GHz中继链路。 发送端 801和接收端 802确认命令， 建立通信链路， 进行通信， 其中， 因协调设备 803的前向中继链路为 WiFi中继链路，而后向中继链路为 60GHz 中继链路， 频段不兼容， 因此协调设备 803需要对接收的数据报文进行转换 后再转发。
应用实例 2
该应用实例 2中， 如图 9所示， 若终端发送端 901和接收端 902同时支 持 60GHz通信且位于同一子网， 当发送端 901请求建立与收发端 902均支持 的频段的链路建立请求时， 因发送端 901与接收端 902的通信频段兼容， 协 调设备 903命令接收端 902与发送端 901建立 60GHz点到点连接。
该应用实例 2中， 如图 10所示， 若终端发送端 1001和接收端 1002同时 支持 WiFi通信、 且具备点到点链路建立能力， 无论是否位于同一子网， 当发 送端 1001请求建立与收发端 1002均支持的频段的链路建立请求时， 因发送 端 1001与接收端 1002的通信频段兼容， 协调设备 1003命令接收端 1002与 发送端 1001建立 WiFi点到点连接。
该应用实例 2中， 若终端发送端和接收端同时支持 WiFi通信， 则至少一 端不具备点到点链路建立能力且发送端和接收端位于同一子网， 当发送端请 求建立与收发端均支持的频段的链路建立请求时， 因发送端与接收端通信频 段兼容但至少一端不具备点到点链路建立能力， 协调设备与收发端建立中继 链路，其中分别与终端发送端和终端接收端建立 WiFi中继链路。该种情形下， 虽然协调设备也作为中继节点， 但因其前向中继链路与后向中继链路频段兼 容， 因此协调设备无需对接收的数据报文进行转换。
应用实例 3
该应用实例中终端收发端仅支持 60GHz通信，但发送端和接收端位于不 同子网。 如图 11所示， 终端发送端 1101的链路建立请求传递至其所在子网 的协调设备 1103 , 由于终端收发双方均支持 60GHz通信， 因此， 该请求传递 至接收端 1102所在子网的协调设备 1104, 最终建立完整的通信链路。
终端发送端 1101向其所在子网的协调设备 1103发送建立链路请求， 该 请求包含了终端发送端和终端接收端的终端信息以及要求的通信方式；
协调设备 1103判断频段兼容性； 当终端接收端 1102支持 60GHz通信 , 且跨子网时 , 协调设备 1103根据 本地节点资源信息表向协调设备 1104转发链路建立请求；
协调设备 1103与终端发送端 1101建立 60GHz中继链路， 并与协调设备 1104建立 60GHz中继链路， 协调设备 1104与终端接收端 1102建立 60GHz 中继链路。 果某终端具有中继功能， 则 也可作为中继节点,' 节点 源信息表可增加 节点的业务状态和业务类型等信息， 为路由计算提供参考。 此外， 本发明实 施例的中继节点也不仅限于为满足通信频段兼容性而起中转作用， 例如， 当 点对点链路受到遮挡， 中继节点也可以作为中转节点， 而建立中继链路； 当 兼容的 WiFi终端之间不支持 Wi-Fi Direct链路， 则也可以用中继节点充当路 由。 简化起见， 本发明实施方式中不对这些实施例做讨论。
值得注意的是， 上述所有通信链路建立以后， 在通信过程中， 当传输质 量下降， 终端可以向协调设备请求更换通信链路。 比如， 当 LOS链路质量下 降， 协调设备可以协调 LOS链路切换为中继链路。
本领域普通技术人员可以理解上述方法中的全部或部分步骤可通过程序 来指令相关硬件完成， 所述程序可以存储于计算机可读存储介质中， 如， 只 读存储器、 磁盘或光盘等。 可选地， 上述实施例的全部或部分步骤也可以使 用一个或多个集成电路来实现。 相应地， 上述实施例中的各模块 /单元可以釆 用硬件的形式实现， 也可以釆用软件功能模块的形式实现。 本发明实施例不 限制于任何特定形式的硬件和软件的结合。
本发明不局限于上述实施例， 针对特定情形， 可以对本发明实施例做各 种修改， 而所作的任何修改、 等同替换、 改进等， 均不脱离本发明所附权利 要求的保护范围之内。
工业实用性
本发明实施例中， 能够通过协调设备实现多频段的混合组网。

Claims

权 利 要 求 书
1、一种多频段无线通信方法，应用于支持多频段通信的协调设备，其中， 所述协调设备管理节点资源信息表， 所述节点资源信息表包括所述协调设备 所在子网以及其他子网的终端信息； 所述方法包括：
所述协调设备接收链路建立请求；
所述协调设备根据所述节点资源信息表响应所述链路建立请求， 命令发 送端和接收端建立点到点连接或协调建立发送端和接收端之间的中继链路； 以及
所述协调设备为中继节点时， 所述协调设备接收并转发接收到的数据报 文。
2、 如权利要求 1所述的方法， 其中：
所述终端信息包括用于识别终端以及终端所在子网的标识信息； 所述链路建立请求包括所述发送端的标识信息和所述接收端的标识信 息；
所述协调设备响应所述链路建立请求包括：
若所述发送端位于所述发送端所在子网， 或， 所述链路建立请求来自所 述发送端所在子网的协调设备， 则所述协调设备响应所述链路建立请求。
3、 如权利要求 1所述的方法， 其中：
所述协调设备协助建立的发送端和接收端之间的中继链路包括： 所述协调设备到所述发送端的前向中继链路以及所述协调设备到所述接 收端的后向中继链路； 或，
所述协调设备到所述发送端的前向中继链路以及所述协调设备到与所述 接收端连接的协调设备的后向中继链路； 或，
所述协调设备到与所述发送端连接的协调设备的前向中继链路以及所述 协调设备到所述接收端的后向中继链路。
4、 如权利要求 3所述的方法， 其中：
所述协调设备接收并转发接收到的数据报文包括： 所述协调设备的前向中继链路和后向中继链路的频段不同时 , 所述协调 设备对接收的数据报文进行转换后再转发。
5、 如权利要求 1所述的方法， 其中：
所述终端信息还包括所述终端支持的频段信息；
所述链路建立请求还包括请求频段信息；
所述协调设备接收并转发接收到的数据报文包括：
所述请求频段信息与所述接收端支持的频段信息不兼容时， 所述发送端 所在子网的协调设备或所述接收端所在子网的协调设备对接收的数据报文进 行转换后再转发。
6、 如权利要求 1所述的方法， 其中：
所述终端信息还包括所述终端支持的频段信息；
所述链路建立请求还包括请求频段信息；
所述协调设备支持无线保真 WiFi和 60GHz两个频段；
所述请求频段信息是 60GHz时， 所述协调设备根据所述节点资源信息表 响应所述链路建立请求包括：
所述协调设备根据所述节点资源信息表判断所述接收端支持的频段信息 与所述请求频段信息的兼容性；
若不兼容， 则所述协调设备建立到所述发送端的第一中继链路以及到所 述接收端的第二中继链路；
若兼容， 则判断所述发送端与所述接收端是否位于同一子网；
若位于同一子网， 则命令所述发送端与所述接收端建立点到点连接； 若 位于不同子网， 则所述发送端所在子网的协调设备向所述接收端所在子网的 协调设备转发所述链路建立请求， 且所述发送端所在子网的协调设备建立到 所述发送端的第一中继链路， 所述接收端所在子网的协调设备建立到所述接 收端的第二中继链路， 以及所述发送端所在子网的协调设备建立到所述接收 端所在子网的协调设备的第三中继链路。
7、 如权利要求 1所述的方法， 其中： 所述终端信息还包括所述终端支持的频段信息；
所述链路建立请求还包括请求频段信息；
所述协调设备支持 WiFi和 60GHz两个频段；
所述请求频段信息是 WiFi时，所述协调设备根据所述节点资源信息表响 应所述链路建立请求包括：
所述协调设备根据所述节点资源信息表判断所述接收端支持的频段信息 与所述请求频段信息的兼容性；
若兼容， 则所述协调设备建立到所述发送端的第一中继链路以及到所述 接收端的第二中继链路， 或命令所述发送端与所述接收端建立点对点连接； 若不兼容， 则判断所述发送端与所述接收端是否位于同一子网； 若位于同一子网， 则所述协调设备建立到所述发送端的第一中继链路以 及到所述接收端的第二中继链路； 若位于不同子网， 则所述发送端所在子网 的协调设备向所述接收端所在子网的协调设备转发所述链路建立请求， 且所 述接收端所在子网的协调设备建立到所述发送端的第一中继链路以及到所述 接收端的第二中继链路。
8、 如权利要求 7所述的方法， 其中：
所述终端信息还包括点对点能力信息；
所述协调设备命令发送端和接收端建立点到点连接包括：
所述接收端支持的频段信息与所述请求频段信息兼容且所述发送端和所 述接收端都具备点对点能力时， 所述协调设备命令所述发送端与所述接收端 建立点对点连接。
9、 一种协调设备， 支持多频段通信， 包括：
信息管理单元， 其设置成： 管理节点资源信息表， 其中， 所述节点资源 信息表包括所述协调设备所在子网以及其他子网的终端信息；
请求接收单元， 其设置成： 接收链路建立请求；
请求响应单元， 其设置成： 根据所述节点资源信息表响应所述链路建立 请求， 命令发送端和接收端建立点到点连接或协调建立发送端和接收端之间 的中继链路； 以及
报文转发单元， 其设置成： 所述协调设备为中继节点时， 接收并转发接 收到的数据报文。
10、 如权利要求 9所述的协调设备， 其中：
所述终端信息包括用于识别终端以及终端所在子网的标识信息； 所述链路建立请求包括所述发送端的标识信息和所述接收端的标识信 息；
所述请求响应单元是设置成以如下方式响应所述链路建立请求： 若所述发送端位于所述发送端所在子网， 或， 所述链路建立请求来自所 述发送端所在子网的协调设备， 则响应所述链路建立请求。
11、 如权利要求 9所述的协调设备， 其中：
所述请求响应单元协助建立的发送端和接收端之间的中继链路包括： 所述协调设备到所述发送端的前向中继链路以及所述协调设备到所述接 收端的后向中继链路； 或，
所述协调设备到所述发送端的前向中继链路以及所述协调设备到与所述 接收端连接的协调设备的后向中继链路； 或，
所述协调设备到与所述发送端连接的协调设备的前向中继链路以及所述 协调设备到所述接收端的后向中继链路。
12、 如权利要求 11所述的协调设备， 其中：
所述报文转发单元是设置成以如下方式接收并转发接收到的数据报文： 所述协调设备的前向中继链路和后向中继链路的频段不同时， 对接收的 数据报文进行转换后再转发。
13、 如权利要求 9所述的协调设备， 其中：
所述终端信息还包括所述终端支持的频段信息；
所述链路建立请求还包括请求频段信息；
所述报文转发单元是设置成以如下方式接收并转发接收到的数据报文： 所述请求频段信息与所述接收端支持的频段信息不兼容时， 且所述协调 时， 对接收的数据报文进行转换后再转发。
14、 如权利要求 9所述的协调设备， 其中：
所述终端信息还包括所述终端支持的频段信息；
所述链路建立请求还包括请求频段信息；
所述协调设备支持无线保真 WiFi和 60GHz两个频段；
所述请求响应单元包括：
兼容性判断单元， 其设置成： 根据所述节点资源信息表判断所述接收端 支持的频段信息与所述请求频段信息的兼容性；
跨子网判断单元，其设置成：所述请求频段信息是 60GHz且判断兼容时， 或所述请求频段信息是 WiFi且判断不兼容时，判断所述发送端与所述接收端 是否位于同一子网；
请求转发单元， 其设置成： 所述协调设备作为所述发送端所在子网的协 调设备， 所述请求频段信息是 60GHz且判断跨子网或所述请求频段信息是 WiFi且判断跨子网时， 向所述接收端所在子网的协调设备转发所述链路建立 请求； 以及
链路建立单元， 其设置成： 命令所述发送端和所述接收端建立点到点连 接或建立中继链路；
其中， 所述链路建立单元是设置成以如下方式命令所述发送端和所述接 收端建立点到点连接或中继链路：
所述请求频段信息是 60GHz且判断不兼容时， 或， 所述请求频段信息是 WiFi时且判断兼容时， 或， 所述请求频段信息是 WiFi时且判断同一子网时， 建立到所述发送端的第一中继链路以及到所述接收端的第二中继链路；
所述请求频段信息是 60GHz且判断同一子网时， 或， 所述请求频段信息 是 WiFi时且判断兼容时， 命令所述发送端与所述接收端建立点到点连接； 所述请求频段信息是 60GHz且判断跨子网时， 若所述协调设备作为所述 发送端所在子网的协调设备， 建立到所述发送端的第一中继链路以及到所述 接收端所在子网的协调设备的第三中继链路； 若所述协调设备作为所述接收 端所在子网的协调设备， 建立到所述接收端的第二中继链路以及到发送端所 在子网的协调设备的第三中继链路；
所述请求频段信息是 WiFi时且判断跨子网时，若所述协调设备作为接收 端所在子网的协调设备， 建立到所述发送端第一中继链路以及到所述接收端 的第二中继链路。
15、 如权利要求 14所述的协调设备， 其中：
所述终端信息还包括点对点能力信息；
所述链路建立单元是设置成以如下方式命令发送端和接收端建立点到点 连接：
所述接收端支持的频段信息与所述请求频段信息的兼容且所述发送端和 所述接收端都具备点对点能力时， 命令所述发送端与所述接收端建立点对点 连接。
16、 一种多频段无线通信网络， 包括： 至少两个子网， 其中， 每个子网 包括：
如权利要求 9至 15中任一项所述的协调设备， 其设置成： 支持至少两个 频段的通信； 以及
至少两个终端， 其中， 每个终端支持至少一个频段的通信。
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