CN111093245A - Wireless networking method and device supporting multi-hop - Google Patents
Wireless networking method and device supporting multi-hop Download PDFInfo
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- CN111093245A CN111093245A CN201811242579.7A CN201811242579A CN111093245A CN 111093245 A CN111093245 A CN 111093245A CN 201811242579 A CN201811242579 A CN 201811242579A CN 111093245 A CN111093245 A CN 111093245A
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- 238000000034 method Methods 0.000 title claims abstract description 34
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- 238000004891 communication Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000004973 liquid crystal related substance Substances 0.000 description 3
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
- H04W40/12—Communication route or path selection, e.g. power-based or shortest path routing based on transmission quality or channel quality
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
- H04W40/22—Communication route or path selection, e.g. power-based or shortest path routing using selective relaying for reaching a BTS [Base Transceiver Station] or an access point
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/24—Connectivity information management, e.g. connectivity discovery or connectivity update
- H04W40/248—Connectivity information update
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
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Abstract
The application provides a wireless networking method and device supporting multi-hop. The method comprises the following steps: dividing a bandwidth for realizing wireless networking into N frequency bands, and dividing channels on each frequency band, wherein N is an integer greater than 1; controlling a radio frequency switch matrix unit, traversing the N frequency bands, and sequentially gating the frequency band of the relay terminal to one of the frequency bands, so that the relay terminal starts a network searching process and feeds back a network searching result; distributing working channels for the relay terminal and the local access system of the relay node according to the channel quality in the network searching result fed back by the relay terminal and the network topology information; setting the gating state of the radio frequency switch matrix and channel parameters of a local access system and a relay terminal; and interacting channel distribution information with wireless networking devices corresponding to other relay nodes, and updating network topology information. The method can flexibly realize the wireless networking supporting the multi-hop under the condition of not increasing the complexity of the system.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a wireless networking method and apparatus supporting multiple hops.
Background
With the miniaturization of the wireless mobile communication system with the bandwidth of TDD LTE/WiMAX and the like, vehicle-mounted or portable broadband wireless communication appears.
When a plurality of vehicle-mounted or movable TD LTE communication systems are connected by using a wired (optical fiber) or other wireless transmission system, the efficiency and effectiveness of the joint use of the plurality of vehicle-mounted or movable TD LTE communication systems are influenced due to the difficulty in deployment of the wired or wireless transmission systems.
Currently, a local access system and a relay terminal in a wireless networking supporting multi-hop are respectively externally connected with a filter.
Such implementation requires the filter of the local access system and the relay terminal to be configured in advance, and subsequent hop-free equipment cannot be changed, for example, a third-stage equipment cannot be placed on the second stage, otherwise, a wireless link is interrupted.
The local access system and the relay terminal of the relay node need independent antennas, and the engineering deployment receives constraints.
Therefore, the existing method for realizing the multi-hop wireless networking is not flexible enough, needs to manually configure network parameters, and is low in realization efficiency.
Disclosure of Invention
In view of this, the present application provides a method and an apparatus for wireless networking supporting multiple hops, which can flexibly implement wireless networking supporting multiple hops without increasing system complexity.
In order to solve the technical problem, the technical scheme of the application is realized as follows:
a wireless networking method supporting multi-hop is characterized in that a wireless networking device is added for each relay node, and each relay node comprises a relay terminal and a local access system; the method comprises the following steps:
dividing a bandwidth for realizing wireless networking into N frequency bands, and dividing channels on each frequency band, wherein N is an integer greater than 1;
controlling a radio frequency switch matrix unit, traversing the N frequency bands, and sequentially gating the frequency band of the relay terminal to one of the frequency bands, so that the relay terminal starts a network searching process and feeds back a network searching result;
distributing working channels for the relay terminal and the local access system of the relay node according to the channel quality in the network searching result fed back by the relay terminal and the network topology information; setting the gating state of the radio frequency switch matrix and channel parameters of a local access system and a relay terminal;
and interacting channel distribution information with wireless networking devices corresponding to other relay nodes, and updating network topology information.
A wireless networking device supporting multi-hop is added for each relay node, and each relay node comprises a relay terminal and a local access system; the device includes: the system comprises a control unit, a radio frequency switch matrix unit and an interaction unit;
the control unit is used for dividing a bandwidth for realizing wireless networking into N frequency bands, and dividing channels on each frequency band, wherein N is an integer greater than 1; controlling the radio frequency switch matrix unit to gate; distributing working channels for the relay terminal and the local access system of the relay node according to the channel quality in the network searching result fed back by the relay terminal and the network topology information; setting the gating state of the radio frequency switch matrix and channel parameters of a local access system and a relay terminal;
the radio frequency switch matrix unit traverses the N frequency bands and sequentially gates the frequency band of the relay terminal to one of the frequency bands, so that the relay terminal starts a network searching process and feeds back a network searching result to the control unit;
and the interaction unit is used for interacting channel allocation information with the wireless networking devices corresponding to other relay nodes and updating network topology information.
According to the technical scheme, a wireless networking device is added for each relay node, and the relay node comprises a relay terminal and a local access system; the method is characterized in that the bandwidth for realizing the wireless networking is divided into different frequency bands, channels are divided on different frequency channels according to needs, a radio frequency switch matrix is introduced to serve as channels for the relay terminal and the local access system to gate work, and the wireless networking supporting the multi-hop is realized.
Drawings
Fig. 1 is a schematic diagram illustrating a wireless networking process for supporting multi-hop in an embodiment of the present application;
FIG. 2 is a schematic diagram of channel division in an embodiment of the present application;
fig. 3 is a schematic networking diagram of a relay node;
fig. 4 is a schematic structural diagram of an apparatus applied to the above-described technology in the embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly apparent, the technical solutions of the present invention are described in detail below with reference to the accompanying drawings and examples.
The embodiment of the application provides a wireless networking method supporting multi-hop, wherein a wireless networking device is added for each relay node, and each relay node comprises a relay terminal and a local access system; the method is characterized in that the bandwidth for realizing the wireless networking is divided into different frequency bands, channels are divided on different frequency channels according to needs, a radio frequency switch matrix is introduced to serve as channels for the relay terminal and the local access system to gate work, and the wireless networking supporting the multi-hop is realized.
In the embodiment of the present application, a device for implementing wireless networking supporting multi-hop may be integrated on a device alone, or may be used as a functional device on a relay terminal, or may be used as a functional device on a device in a local access system. Hereinafter, for convenience of description, collectively referred to as a networking device.
The following describes in detail a wireless networking process for supporting multi-hop in an embodiment of the present application with reference to the accompanying drawings.
Referring to fig. 1, fig. 1 is a schematic diagram illustrating a flow of implementing a wireless networking supporting multi-hop in an embodiment of the present application. The method comprises the following specific steps:
N in this step is an integer greater than 1.
The number of the channel division performed on each frequency band may be the same or different, that is, the number of the channel division performed on each frequency band is not limited, or may not be divided, that is, one frequency band is divided into one channel.
Referring to fig. 2, fig. 2 is a schematic diagram of channel division in the embodiment of the present application.
In fig. 2, to implement the bandwidth of wireless networking, that is, the working frequency band is: (380MHz, 410MHz), and (420MHz, 450 MHz).
Dividing the working frequency band into two frequency bands, namely an A frequency band and a B frequency band, dividing two channels in each frequency band respectively, wherein the central frequency points of the two channels divided by the A frequency band are respectively F (a,1) and F (a,2), and the corresponding bandwidths are respectively 20MHZ and 10 MHZ; the central frequency points of two channels divided aiming at the B frequency band are respectively F (B,1) and F (B,2), and the bandwidths are respectively 20MHZ and 10 MHZ.
And 102, controlling a radio frequency switch matrix unit by the networking device, traversing the N frequency bands, and sequentially gating the frequency band of the relay terminal to one of the frequency bands, so that the relay terminal starts a network searching process and feeds back a network searching result.
The radio frequency switch matrix unit is a switch matrix with 2 from N, and can realize the arbitrary gating of the relay terminal and the local access system to N frequency bands.
The networking device firstly sets a radio frequency switch matrix unit, and gates the frequency band of the relay terminal to one of the frequency bands, such as the frequency band a in fig. 2, so that the relay terminal starts a network searching process.
When the relay terminal starts a network searching process, the channel quality, such as level, SNR and the like, of each channel is obtained, and network topology information before access is obtained.
As shown in fig. 2, the channel qualities of two channels with center frequency points F (a,1) and F (a,2) are respectively obtained.
When the network searching process of the relay terminal is finished, the network searching result, namely the channel quality of each channel and the network topology information before access are fed back to the Chinese network device.
103, the networking device allocates working channels for the relay terminal and the local access system of the relay node according to the channel quality in the network searching result fed back by the relay terminal and the network topology information; and setting the gating state of the radio frequency switch matrix and the channel parameters of the local access system and the relay terminal.
When the channel is allocated to the local access system and the relay terminal of the corresponding relay node according to the network searching result, the channel allocation can be implemented according to a certain pre-configured strategy, and the channel allocation is implemented according to the following principles and is not limited to the following principles:
and allocating channels corresponding to different frequency bands for the relay terminal and the local access system, wherein the channels are different from the channels of the alternate hop relay link. It is only necessary that the channels are different, and the frequency bands may be the same or different.
Referring to fig. 3, fig. 3 is a schematic networking diagram of a relay node. Taking the networking schematic diagram shown in fig. 3 and the channel division of fig. 2 as examples, each networking device allocates a channel to a corresponding relay node. If a channel with a central frequency point of F (a,1) is allocated to a relay terminal in a first relay node, and a channel with a central frequency point of F (b,1) is allocated to a local access system; distributing channels corresponding to different frequency bands for the relay terminal and the local access system; and allocating a channel with a central frequency point of F (b,1) for the relay terminal of the second relay node, and allocating a channel with a central frequency point of F (a,2) for the local access system, namely, the channel is different from the channel of the alternate hop relay link.
In the embodiment of the application, the relay terminal and the local access system share the antenna, and the separation of N frequency bands is realized through the multi-frequency combiner, namely, the mutual interference of different frequency bands is realized.
The scheme provided by the embodiment of the application can support wireless networking such as chain, tree, star and linear networking; for linear networking, wireless networking without interference between 4-level 3 hops can be realized by allocating at least 3 channels. The configuration does not need to combine the directional antenna to realize the interference problem of chain network.
The output of the transmitter provided by the rf switch matrix does not interfere with the port isolation of the receiver, i.e., the rf switch matrix provides sufficient port isolation to ensure that the output of the transmitter does not interfere with the receiver.
And 104, the networking device interacts channel distribution information with wireless networking devices corresponding to other relay nodes and updates network topology information.
Where the topology information is stored in the wireless networking, it is sufficient where to update.
The application is based on the same inventive concept, and also provides a wireless networking device supporting multi-hop. The wireless networking device is respectively added for each relay node, and each relay node comprises a relay terminal and a local access system; referring to fig. 4, fig. 4 is a schematic structural diagram of an apparatus applied to the above technology in the embodiment of the present application. The device includes: a control unit 401, a radio frequency switch matrix unit 402 and an interaction unit 403;
a control unit 401, configured to divide a bandwidth for implementing wireless networking into N frequency bands, where each frequency band is divided into channels, where N is an integer greater than 1; controlling the radio frequency switch matrix unit 402 to gate; distributing working channels for the relay terminal and the local access system of the relay node according to the channel quality in the network searching result fed back by the relay terminal and the network topology information; setting the gating state of the radio frequency switch matrix and channel parameters of a local access system and a relay terminal;
the radio frequency switch matrix unit 402 is configured to traverse the N frequency bands, and sequentially gate the frequency bands of the relay terminal to one of the frequency bands, so that the relay terminal starts a network searching process and feeds back a network searching result to the control unit 401; the radio frequency switch matrix unit is a gating unit from N to 2;
and an interaction unit 403, configured to interact network topology information with a wireless networking device corresponding to another relay node, and update a network topology structure.
Preferably, the first and second liquid crystal films are made of a polymer,
the control unit 401 is specifically configured to allocate channels corresponding to different frequency bands to the relay terminal and the local access system when allocating working channels to the relay terminal and the local access system of the relay node according to the channel quality in the network search result fed back by the relay terminal and the network topology information, where the working channels are different from the channels of the alternate hop relay link.
Preferably, the first and second liquid crystal films are made of a polymer,
the apparatus further comprises: a multi-frequency combiner 404;
and a multi-frequency combiner 404, configured to implement separation of the N frequency bands, where the relay terminal and the local access system share an antenna.
Preferably, the first and second liquid crystal films are made of a polymer,
the rf switch matrix unit 402 is further used to provide that the output of the transmitter does not interfere with the port isolation of the receiver.
The units of the above embodiments may be integrated into one body, or may be separately deployed; may be combined into one unit or further divided into a plurality of sub-units.
In summary, the present application adds a wireless networking device to each relay node, where the relay node includes a relay terminal and a local access system; the method is characterized in that the bandwidth for realizing the wireless networking is divided into different frequency bands, channels are divided on different frequency channels according to needs, a radio frequency switch matrix is introduced to serve as channels for the relay terminal and the local access system to gate work, and the wireless networking supporting the multi-hop is realized.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A wireless networking method supporting multi-hop is characterized in that a wireless networking device is added for each relay node, and the relay node comprises a relay terminal and a local access system; the method comprises the following steps:
dividing a bandwidth for realizing wireless networking into N frequency bands, and dividing channels on each frequency band, wherein N is an integer greater than 1;
controlling a radio frequency switch matrix unit, traversing the N frequency bands, and sequentially gating the frequency band of the relay terminal to one of the frequency bands, so that the relay terminal starts a network searching process and feeds back a network searching result; the radio frequency switch matrix unit is a gating unit from N to 2;
distributing working channels for the relay terminal and the local access system of the relay node according to the channel quality in the network searching result fed back by the relay terminal and the network topology information; setting the gating state of the radio frequency switch matrix and channel parameters of a local access system and a relay terminal;
and interacting channel distribution information with wireless networking devices corresponding to other relay nodes, and updating network topology information.
2. The method of claim 1, further comprising:
and when working channels are allocated to the relay terminal and the local access system of the relay node according to the channel quality in the network searching result fed back by the relay terminal and the network topology information, allocating channels corresponding to different frequency bands to the relay terminal and the local access system, wherein the channels are different from the channels of the alternate hop relay link.
3. The method of claim 1, further comprising:
the relay terminal and the local access system share an antenna, and the separation of N frequency bands is realized through a multi-frequency combiner.
4. The method of claim 1, further comprising:
and the isolation of a transmitting and receiving port between the relay terminal and a local access system is provided through a radio frequency switch matrix.
5. The method of claim 1, wherein when the network topology is linear networking, the total number of divided channels is not less than 3.
6. The method of claims 1-5, wherein the wireless networking apparatus is deployed on a relay terminal, on a device of a local access system, or on a device outside of the relay terminal and the local access system.
7. A wireless networking device supporting multi-hop is characterized in that the wireless networking device is added for each relay node, and each relay node comprises a relay terminal and a local access system; the device includes: the system comprises a control unit, a radio frequency switch matrix unit and an interaction unit;
the control unit is used for dividing a bandwidth for realizing wireless networking into N frequency bands, and dividing channels on each frequency band, wherein N is an integer greater than 1; controlling the radio frequency switch matrix unit to gate; distributing working channels for the relay terminal and the local access system of the relay node according to the channel quality in the network searching result fed back by the relay terminal and the network topology information; setting the gating state of the radio frequency switch matrix and channel parameters of a local access system and a relay terminal;
the radio frequency switch matrix unit is used for traversing the N frequency bands and sequentially gating the frequency band of the relay terminal to one of the frequency bands, so that the relay terminal starts a network searching process and feeds back a network searching result to the control unit; the radio frequency switch matrix unit is a gating unit from N to 2;
and the interaction unit is used for interacting channel allocation information with the wireless networking devices corresponding to other relay nodes and updating network topology information.
8. The apparatus of claim 7,
the control unit is specifically configured to allocate channels corresponding to different frequency bands to the relay terminal and the local access system when allocating working channels to the relay terminal and the local access system of the relay node according to the channel quality in the network search result fed back by the relay terminal and the network topology information, where the working channels are different from the channels of the alternate hop relay link.
9. The apparatus of claim 7, further comprising: a multi-frequency combiner;
the multi-frequency combiner is used for realizing the separation of N frequency bands, wherein the relay terminal and the local access system share the antenna.
10. The apparatus according to any one of claims 7 to 9,
the radio frequency switch matrix unit is further used for providing that the output of the transmitter does not interfere with the port isolation of the receiver.
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| CN201811242579.7A CN111093245B (en) | 2018-10-24 | 2018-10-24 | Wireless networking method and device supporting multi-hop |
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| CN201811242579.7A CN111093245B (en) | 2018-10-24 | 2018-10-24 | Wireless networking method and device supporting multi-hop |
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| US20090029645A1 (en) * | 2007-07-25 | 2009-01-29 | Teenay Wireless, Inc. | Multi-Tier Backhaul Network System with Traffic Differentiation and Advanced Processing Capabilities and Methods Therefor |
| CN103428899B (en) * | 2013-07-18 | 2016-09-28 | 珠海中慧微电子有限公司 | Micropower wireless network ad hoc network method based on multichannel frequency hopping |
| CN106131923A (en) * | 2016-06-30 | 2016-11-16 | 厦门纵行信息科技有限公司 | A kind of network-building method mixing access module multihop network and Wireless Telecom Equipment |
| CN206542578U (en) * | 2017-03-10 | 2017-10-03 | 电子科技大学 | A kind of wireless self-organization network communication equipment based on multimode multi-frequency |
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2018
- 2018-10-24 CN CN201811242579.7A patent/CN111093245B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090029645A1 (en) * | 2007-07-25 | 2009-01-29 | Teenay Wireless, Inc. | Multi-Tier Backhaul Network System with Traffic Differentiation and Advanced Processing Capabilities and Methods Therefor |
| CN103428899B (en) * | 2013-07-18 | 2016-09-28 | 珠海中慧微电子有限公司 | Micropower wireless network ad hoc network method based on multichannel frequency hopping |
| CN106131923A (en) * | 2016-06-30 | 2016-11-16 | 厦门纵行信息科技有限公司 | A kind of network-building method mixing access module multihop network and Wireless Telecom Equipment |
| CN206542578U (en) * | 2017-03-10 | 2017-10-03 | 电子科技大学 | A kind of wireless self-organization network communication equipment based on multimode multi-frequency |
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