CN117279108A

CN117279108A - Channel resource selection system and method

Info

Publication number: CN117279108A
Application number: CN202210649589.2A
Authority: CN
Inventors: 茆意伟; 曹倩; 郑博文; 林学森
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2022-06-09
Filing date: 2022-06-09
Publication date: 2023-12-22

Abstract

The application relates to the technical field of communication, and discloses a channel resource selection system and a channel resource selection method, which are used for reducing channel occupation interference possibly existing in a heterogeneous network and avoiding the problem that a network node cannot apply for a channel all the time. In the system, cooperative master nodes in the heterogeneous network and cooperative nodes in each networking contained in the heterogeneous network can be defined; the method comprises the steps that channel resources are selected for network nodes in a network in a centralized mode or channel resource sets are selected for networking in a centralized mode through a cooperative master node according to channel information from a plurality of network nodes in a heterogeneous network. Therefore, the problem that serious interference exists in the allocation of the overlapping parts of the channel resources when the allocation modes of the channel resources are different by different types of networking can be avoided, and the whole network transmission efficiency of the heterogeneous network can be improved.

Description

Channel resource selection system and method

Technical Field

The embodiment of the application relates to the technical field of communication, in particular to a system and a method for selecting channel resources.

Background

With the development of the internet of things, the short-range wireless communication technology is rapidly developed. For example, short-range wireless communication techniques may include: bluetooth technology, wireless-fidelity (Wi-Fi) technology, star flash technology, etc., or may include other technologies that may occur in the future.

Since the available spectrum resources are limited, there may be overlap of spectrum resources employed by different short-range wireless communication technologies, respectively. In heterogeneous networks constructed based on different short-range wireless communication technologies, if the allocation manners of different types of networks to spectrum resources are different, serious interference may occur to the allocation of overlapping spectrum resources. Therefore, how to implement channel resource allocation of heterogeneous networks is urgent to be studied.

Disclosure of Invention

The embodiment of the application provides a channel resource selection system and a channel resource selection method, which are used for providing a new technical scheme for channel resource allocation, so that channel occupation interference possibly existing in a heterogeneous network can be reduced, and the problem that a network node cannot apply for a channel all the time is avoided.

In a first aspect, an embodiment of the present application provides a channel resource selection system. The system is applied to a heterogeneous network, wherein the heterogeneous network comprises a plurality of networks, and each network comprises a plurality of network nodes; in each networking, the cooperative node is any network node in the networking; the cooperative master node is any network node in the heterogeneous network; the cooperative master node is configured to select a target channel resource for a first network node in a first network group according to channel information from at least one network node, where the first network group is any one of the multiple networks, and the first network node is any one of the first network nodes; and indicating the target channel resources to the first network node; the first network node is configured to obtain the target channel resource indicated by the cooperative master node, and perform data transmission on the target channel resource; wherein the obtaining the target channel resource indicated by the cooperative master node includes: acquiring the target channel resource directly indicated by the cooperative master node or acquiring the target channel resource indirectly indicated by a first cooperative node; the first cooperative node is a cooperative node in the first group of networks.

In the method, the cooperative master node in the heterogeneous network can count channel resource conditions in the heterogeneous network, and then can centrally select channels for the network nodes by comprehensively considering the difference and channel allocation conflict among a plurality of networks, so that channel application interference possibly existing in the network nodes of different networks can be avoided, and the data transmission efficiency of the network nodes in the heterogeneous network and the service quality of service processing can be ensured. After the cooperative master node selects channel resources for the network nodes, the cooperative master node may indicate the selected channel resources for the network nodes in the network through the cooperative nodes in each network, for example, the cooperative master node may indicate the channel resources respectively selected for the plurality of network nodes in the first network together to the first cooperative node in the first network, and then indicate the channel resources to each network node by the first cooperative node; alternatively, the cooperative master node may also directly indicate to the network node, so that the network node may be informed in time.

On the other hand, the cooperative master node is configured to select, according to channel information from at least one network node, a target channel resource set for a first network, where the first network is any one of the multiple networks; and indicating the target channel resource set to a first cooperative node, wherein the first cooperative node is a cooperative node in the first group network; the first cooperative node is configured to obtain the target channel resource set indicated by the cooperative master node; selecting target channel resources for a first network node according to the target channel resource set, wherein the first network node is any network node in the first group of networks; and indicating the target channel resources to the first network node; the first network node is configured to obtain the target channel resource indicated by the first cooperative node, and perform data transmission on the target channel resource.

In the method, in order to reduce the calculation amount of the cooperative master node, the cooperative master node may also select a channel resource set for the networking, and then the cooperative node in each networking further distributes the channel resource set to one or more network nodes in the networking. By the method, the channel can be selected for the network node in a centralized way by comprehensively considering the difference among a plurality of networks and the channel allocation conflict, so that channel application interference possibly existing in the network nodes of different networks can be avoided, and the data transmission efficiency of the network nodes in the heterogeneous network and the service quality of service processing can be ensured.

In one possible design, the cooperative host node is configured to, before selecting the target channel resource for the first network node in the first network group or selecting the target channel resource set for the first network group, further configured to: receiving request information from a first network node for applying for a channel; wherein, the request information contains the identification information of the target channel resource; or, the request information includes service information, where the service information is used to select a target channel resource for the first network node.

In the design, the cooperative master node not only can actively select channel resources for network nodes or select channel resource sets for networking, but also can passively select channel resources for network nodes or select channel resource sets for networking in response to request information of the network nodes.

In one possible design, the service information includes at least one of: service type, service requirement. In the design, the network node reports the service information for applying the channel resources to the cooperative master node so that the cooperative master node can conveniently select proper channel resources for the network node according to the service information of the network node, and therefore accuracy of selecting the channel resources for the network node can be improved.

In one possible design, the cooperative host node is configured to, before selecting the target channel resource for the first network node in the first network group or selecting the target channel resource set for the first network node according to the channel information from the at least one network node, further configured to: receiving channel information directly reported by at least one network node; or receiving channel information which is indirectly reported by at least one cooperative node and is collected by at least one network node in the networking where the cooperative node is located.

In the design, the network node in the networking can directly report the channel information to the cooperative master node; or reporting channel information to the cooperative nodes in the network, and then reporting the summarized channel information of at least one network node in the network to the cooperative master node by the cooperative nodes. Therefore, the method can meet the requirements of various service scenes and promote the selection effect of the whole network channel resources in the heterogeneous network.

In one possible design, the cooperative master node is configured to, when receiving channel information collected from at least one network node, specifically: receiving channel information acquired by at least one network node through an auxiliary link used for transmitting control plane information between the network node and each network node; the cooperative master node is configured to receive channel information collected from at least one network node in a network where the cooperative master node is located, where the channel information is reported by at least one cooperative node, and is specifically configured to: and receiving channel information which is reported by the at least one cooperative node and is collected by the at least one network node in the networking of the at least one cooperative node through an auxiliary link used for transmitting control plane information between the at least one cooperative node and the at least one cooperative node.

In the design, in the heterogeneous network, the separation of the control plane information and the user plane information can ensure the accuracy of information transmission and data transmission, and avoid or reduce the occurrence of the problems of data and information loss.

In one possible design, the cooperative host node is further configured to: and updating a channel information table of the heterogeneous network according to channel information from at least one network node, wherein the channel information table is used for indicating a selectable channel resource set of the heterogeneous network.

In the design, the cooperative master node can count the use condition of the network node in the heterogeneous network on the channel information by maintaining the channel information table about the heterogeneous network, so that the selection or reselection of the channel resources for the network node can be more effectively realized.

In one possible design, the cooperative host node is further configured to: transmitting the channel information table to a second network node in the heterogeneous network; if the second network node is a cooperative node, the second network node is configured to select a target channel resource for a third network node according to the channel information table, where the third network node is any network node in a second group of networks where the second network node is located; and if the second network node is a non-cooperative node, the second network node is further configured to select a target channel resource according to the channel information table, and send request information for applying for the target channel resource to the cooperative master node or a second cooperative node in the second group of networks.

In the design, the cooperative master node can actively allocate channel resources for the network nodes and broadcast or unicast the selection results of the network nodes in the heterogeneous network to the network nodes in the heterogeneous network. Therefore, the network node can transmit the resource based on the channel resource selected in a centralized way by the cooperative master node, and the occurrence of the problem of channel interference caused by different channel allocation modes of different networking is avoided.

In one possible design, the channel information includes at least one of the following: a strength indication (received signal strength indication, RSSI) of the received signal of the channel, a duty cycle of the channel, a channel primary band, a channel bandwidth, a type of traffic on the self-used channel.

In one possible design, the cooperative host node is further configured to, prior to selecting the target channel resource for the first network node in the first group of networks: acquiring a main link type reported by at least one network node and used for transmitting user plane data by the network node; the cooperative master node is configured to, when selecting a target channel resource for a first network node in a first network group, specifically: and selecting target channel resources for the first network node from the selectable channel resources corresponding to the main link type according to the main link type adopted by the first network node.

In the design, the cooperative master node can determine the networking type of the network node by acquiring the main link type of the network node, so that more accurate channel selection can be provided for the network nodes in different networking types.

In another possible design, the cooperative host node is further configured, prior to selecting the target set of channel resources for the first network, to: acquiring a main link type reported by at least one network node and used for transmitting user plane data by the network node; the cooperative master node is configured to, when selecting a target channel resource set for the first network, specifically: and selecting a target channel resource set for the first networking from the selectable channel resources corresponding to the main link type according to the main link type of the network node contained in the first networking.

In the design, the cooperative master node can determine the networking type of the network node by acquiring the main link type of the network node, so that more accurate channel selection can be provided for networking of different types.

In one possible design, the first network node is further configured to send a change indication to the cooperative master node if a preset change event is detected; wherein the change indication is used by the cooperative master node to reselect a target channel resource for the first network node or to reselect a target channel resource set for the first network; the preset change event includes, but is not limited to, at least one of the following events: and changing service information and channel information.

In the design, after at least one of the service information and the channel information of the network node is changed, the channel resource can be reselected for the network node by the cooperative master node through changing the indication to the cooperative master node. Therefore, the channel resources can be redistributed timely according to the requirements of actual scenes, so that the whole network transmission efficiency of the heterogeneous network can be ensured.

In a second aspect, embodiments of the present application further provide a channel resource selection method. The method comprises the following steps: the cooperative master node selects target channel resources for a first network node in a first group of networks according to channel information from at least one network node; the first network is any one of a plurality of networks contained in a heterogeneous network, and the first network node is any network node in the first network; the cooperating master node indicates the target channel resources to the first network node.

On the other hand, the cooperative master node selects a target channel resource set for a first network according to channel information from at least one network node, wherein the first network is any one of a plurality of networks contained in a heterogeneous network; the cooperative master node indicates the target channel resource set to a first cooperative node, wherein the first cooperative node is a cooperative node in the first group network.

In one possible design, before selecting the target channel resource for the first network node in the first network group or selecting the target channel resource set for the first network group, the method further comprises: the cooperative master node receives request information from a first network node for applying a channel; wherein, the request information contains the identification information of the target channel resource; or, the request information includes service information, where the service information is used to select a target channel resource for the first network node.

In one possible design, the service information includes at least one of: service type, service requirement.

In one possible design, before the cooperative host node selects the target channel resource for the first network node in the first network group or selects the target channel resource set for the first network node in the first network group according to the channel information from the at least one network node, the method further includes: receiving channel information acquired from at least one network node; or receiving channel information which is reported by at least one cooperative node and is collected by at least one network node in the networking of the cooperative node.

In one possible design, when the cooperative master node receives channel information collected from at least one network node, the cooperative master node specifically includes: and receiving channel information acquired by the at least one network node through an auxiliary link used for transmitting control plane information between the at least one network node and the at least one network node. When the cooperative master node receives channel information which is reported by at least one cooperative node and is collected by at least one network node in the networking where the cooperative master node is located, the method specifically comprises the following steps: and receiving channel information which is reported by the at least one cooperative node and is collected by the at least one network node in the networking of the at least one cooperative node through an auxiliary link used for transmitting control plane information between the at least one cooperative node and the at least one cooperative node.

In one possible design, the method further comprises: and the cooperative master node updates a channel information table of the heterogeneous network according to channel information from at least one network node, wherein the channel information table is used for indicating a selectable channel resource set of the heterogeneous network.

In one possible design, the method further comprises: the cooperative master node sends the channel information table to a second network node in the heterogeneous network; and the cooperative master node receives the request information for applying for the target channel resource, which is sent after the second network node selects the target channel resource based on the channel information table.

In one possible design, the channel information includes at least one of the following: RSSI, duty cycle of the channel, channel primary band, channel bandwidth, type of traffic on the self-used channel.

In one possible design, the method further comprises: and before the cooperative master node selects a target channel resource for a first network node in the first group of networks, acquiring a main link type reported by at least one network node and used for transmitting user plane data per se. The cooperative master node selects a target channel resource for a first network node in a first group of networks, and specifically includes: selecting target channel resources for the first network node from selectable channel resources corresponding to the main link type according to the main link type adopted by the first network node;

in one possible design, before the cooperative host node selects the target set of channel resources for the first network, the method further includes: and acquiring a main link type reported by at least one network node and used for transmitting user plane data by the network node. When the cooperative master node selects a target channel resource set for the first network, the cooperative master node specifically includes: and selecting a target channel resource set for the first networking from the selectable channel resources corresponding to the main link type according to the main link type of the network node contained in the first networking.

In a third aspect, embodiments of the present application further provide a channel resource selection method. The first network node obtains the target channel resource indicated by the cooperative master node in the heterogeneous network; the first network node performs data transmission on the target channel resource; wherein the obtaining the target channel resource indicated by the cooperative master node includes: acquiring the target channel resource directly indicated by the cooperative master node or acquiring the target channel resource indirectly indicated by a first cooperative node; the first cooperative node is a cooperative node in a first network, and the first network is a network where the first network node is located.

On the other hand, the first network node acquires the target channel resource indicated by the first cooperative node; the first cooperative node is a cooperative node in a first network, and the first network is a network where the first network node is located; and carrying out data transmission on the target channel resources.

In one possible design, before the first network node acquires the target channel resource, the method further includes: the first network node sends request information for applying for a channel; wherein, the request information contains the identification information of the target channel resource; or, the request information includes service information, where the service information is used to select a target channel resource for the first network node.

In one possible design, the first network node directly reports channel information to a cooperative master node; or the first network node indirectly reports the channel information through a first cooperative node in the first group of networks. Optionally, the first network node may report the channel information directly or indirectly through an auxiliary link.

In one possible design, the first network node obtains a channel information table from a cooperative master node, selects a target channel resource according to the channel information table, and sends request information for applying for the target channel resource to the cooperative master node or a first cooperative node in the first group of networks.

In one possible design, the channel information includes at least one of the following: the strength of the received signal of the channel indicates the RSSI, the duty cycle of the channel, the channel band, the channel bandwidth, the type of traffic on the self-used channel.

In one possible design, the first network node reports to the cooperating master node a primary link type for transmitting user plane data itself.

In one possible design, the method further comprises: if a preset change event is monitored, the first network node sends a change instruction to the cooperative master node; wherein the change indication is used by the cooperative master node to reselect a target channel resource for the first network node or to reselect a target channel resource set for the first network; the preset change event includes, but is not limited to, at least one of the following events: and changing service information and channel information.

In a fourth aspect, embodiments of the present application further provide a channel resource selection method. The first cooperative node acquires the target channel resource set indicated by the cooperative master node in the heterogeneous network; the first cooperative node is a cooperative node in a first network, and the first network is a network where the first cooperative node is located; the first cooperative node selects target channel resources for a first network node according to the target channel resource set; the first network node is any network node in the first group of networks; the first cooperating node indicates the target channel resource to the first network node.

In one possible design, the first cooperative node receives request information for applying a channel from at least one network node included in the first group network, and reports the at least one request information to the cooperative master node; wherein, the request information contains the identification information of the target channel resource; or, the request information includes service information, where the service information is used to select a target channel resource for the first network node.

In one possible design, the first cooperative node receives channel information from at least one network node within a first set of networks. Optionally, the first cooperative node may receive channel information collected by each network node through an auxiliary link.

In one possible design, the first cooperative node receives a channel information table of a cooperative master node, and selects a target channel resource for at least one network node in the first network group according to the channel information table.

In a fifth aspect, the present application provides an electronic device comprising a plurality of functional modules; the plurality of functional modules interact to implement the method executed by the cooperative master node or the first cooperative node or the first network node in any of the above aspects and embodiments thereof. The plurality of functional modules may be implemented based on software, hardware, or a combination of software and hardware, and the plurality of functional modules may be arbitrarily combined or divided based on the specific implementation.

In a sixth aspect, the present application provides an electronic device comprising at least one processor and at least one memory, the at least one memory storing computer program instructions, the at least one processor executing the method performed by the cooperating master node or the first cooperating node or the first network node in any of the above aspects and embodiments thereof when the electronic device is in operation.

In a seventh aspect, the present application provides a computer program product comprising: a computer program (which may also be referred to as code, or instructions), when executed, causes a computer to perform the method performed by the cooperating host node or the first cooperating node or the first network node in any of the aspects and embodiments thereof described above.

In an eighth aspect, the present application further provides a computer readable storage medium having stored therein a computer program which, when executed by a computer, causes the computer to perform the method performed by the cooperating master node or the first cooperating node or the first network node in any of the above aspects and embodiments thereof.

In a ninth aspect, the present application further provides a chip, where the chip is configured to read a computer program stored in a memory, and perform a method performed by the cooperative master node or the first cooperative node or the first network node in any of the foregoing aspects and embodiments thereof.

In a tenth aspect, the present application further provides a chip system, where the chip system includes a processor, and the processor is configured to support a computer device to implement a method performed by the cooperative master node or the first cooperative node or the first network node in any of the above aspects and embodiments thereof. In one possible design, the chip system further includes a memory for storing programs and data necessary for the computer device. The chip system may be formed of a chip or may include a chip and other discrete devices.

The advantages of any of the second to tenth aspects are specifically referred to the advantages of the various possible designs of the first aspect, and are not described herein.

Drawings

Fig. 1a is an exemplary diagram of Wi-Fi technology available channels provided in an embodiment of the present application;

fig. 1b is a diagram comparing a star flash technology available channel with a Wi-Fi technology available channel according to an embodiment of the present application;

fig. 1c is an application scenario diagram of co-channel transmission under a heterogeneous network according to an embodiment of the present application;

fig. 2 is a schematic hardware structure of a possible terminal device according to an embodiment of the present application;

fig. 3 is a software structural block diagram of a terminal device provided in an embodiment of the present application;

fig. 4 is a schematic diagram of a scenario of a channel resource selection method according to an embodiment of the present application;

fig. 5a is a schematic view of a networking scenario provided in an embodiment of the present application;

fig. 5b is a schematic diagram of an interaction flow of allocating channels in a network according to an embodiment of the present application;

fig. 6 is a second schematic diagram of a scenario of a channel resource selection method according to an embodiment of the present application;

fig. 7 is an interactive flow diagram of a channel resource selection method according to an embodiment of the present application;

Fig. 8a is one of schematic scenarios of channel resource selection results provided in the embodiments of the present application;

fig. 8b is a second schematic diagram of a scenario of a channel resource selection result provided in an embodiment of the present application;

fig. 9 is a third schematic view of a scenario of a channel resource selection result provided in an embodiment of the present application;

fig. 10 is a schematic diagram of time domain resource allocation according to an embodiment of the present application.

Detailed Description

Embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

The technical scheme provided by the embodiment of the application can be applied to the technical field of communication and is applicable to heterogeneous networks; heterogeneous networks can be understood as networks resulting from the convergence of many different types of networking. For example, the method provided by the embodiment of the application can be applied to heterogeneous networks constructed based on different short-range wireless communication technologies; wherein, the networking types obtained based on different short-distance wireless communication technologies are also different. The heterogeneous network may be a network obtained by fusing a networking constructed by a short-distance wireless communication technology based on a Wi-Fi technology (in the embodiment of the present application, the networking may be simply referred to as "Wi-Fi networking") and a networking constructed by a star flash (SparkLink) technology (in the embodiment of the present application, the networking may be simply referred to as "star flash networking").

The Wi-Fi technology-based short-distance wireless communication technology is widely applied to scenes such as full-house intelligence, video entertainment and the like, and can be used for connection or data transmission between terminal devices. The Wi-Fi operating band includes, but is not limited to, the 5 gigahertz (GHz) band, as defined by the Wi-Fi standard. In the 5GHz band resource, the open available channels in china can be seen in fig. 1 a. Fig. 1a is an exemplary diagram of Wi-Fi technology available channels provided in an embodiment of the present application, taking an available bandwidth of 20 megahertz (MHz) of a single channel as an example, available channels included in a 5.2GHz band include 36, 40, 44, 48, 52, 56, 60, 64, and available channels included in a 5.8GHz band include 149, 153, 157, 161, 165. In addition, the available bandwidth of the single channel may also be 40MHz, for example, the available channels included in the 5.2GHz band include 38, 46, 54, 62, and the available channels included in the 5.8GHz band include 151, 159; the available bandwidth of the single channel may also be 80MHz, for example, the 5.2GHz band may also include available channels including 42 and 58, and the 5.8GHz band may also include available channels including 155; the available bandwidth of a single channel may also be 160MHz, for example, the 5.2GHz band may also include available channels including 50.

Currently, in Wi-Fi networking, intra-networking network nodes (in this embodiment, "network nodes" may also be simply referred to as "nodes" and may be used interchangeably in the present application description) typically perform distributed contention using a carrier sense multiple access/collision avoidance (carrier sense multiple access with collision avoid, CSMA/CA) mechanism to preempt channels. It should be noted that, a node in the network may preempt one channel or may preempt multiple channels. For example, the node in the network may preempt a single channel, if the available bandwidth of each channel is 20MHz, that is, request to occupy the 20MHz spectrum resource corresponding to 1 channel; the node in the network may also occupy a plurality of channels, and if the available bandwidth of each channel is 20MHz, it may request to occupy 40MHz spectrum resources corresponding to 2 channels, or 80MHz spectrum resources corresponding to 4 channels, or 160MHz spectrum resources corresponding to 8 channels.

The star-flash technology provides a new generation of short-distance wireless communication technology for the star-flash alliance, and can be borne in new scenes such as intelligent automobiles, intelligent houses, intelligent terminals, intelligent manufacturing and the like. The 5GHz frequency band resource defined by the star flash technology is overlapped with the 5GHz working frequency band of Wi-Fi. Fig. 1b is a diagram comparing a star flash technology available channel with a Wi-Fi technology available channel according to an embodiment of the present application. The star flash technology includes 125, 209, 291, 375, 459, 541, 625, 709 in the 5.2GHz band, and 2479, 2563, 2645, 2729 in the 5.8GHz band.

In star flashover networking, a centralized scheduling mechanism is generally adopted to allocate channels for nodes in the networking; for example, the centralized scheduling mechanism may be frequency domain scheduling for subcarrier granularity or time domain scheduling for supporting symbol granularity. A star flashgroup network may generally include a management node (G node) and at least one terminal node (T node).

For the frequency domain scheduling of subcarrier granularity, in the star flashover networking, a G node generally allocates a proper channel for the G node and a T node according to the channel use condition of the spectrum resource for data transmission. It should be noted that, similar to Wi-Fi networking, a G node may also allocate a single channel to a G node or a T node, or may also allocate multiple channels. For example, if the available bandwidth of each channel is 20Mhz, the G node may allocate 20Mhz spectrum resources corresponding to 1 channel to the G node or the T node; alternatively, the G node may allocate 40Mhz spectrum resources corresponding to 2 adjacent channels, 80Mhz spectrum resources corresponding to 4 adjacent channels, or 160Mhz spectrum resources corresponding to 8 adjacent channels to the G node or the T node. In addition, unlike Wi-Fi networking, the G node may allocate 60Mhz spectrum resources corresponding to adjacent 3 channels or 100Mhz spectrum resources corresponding to adjacent 5 channels to the G node or the T node.

Based on the foregoing description, the Wi-Fi technology is used for short-distance wireless communication and the star-flash technology is used for short-distance wireless communication, in a heterogeneous network constructed by fusion of Wi-Fi networking and star-flash networking, because spectrum resources corresponding to the Wi-Fi technology and the star-flash technology overlap, and because the star-flash technology adopts a centralized scheduling mechanism for channel allocation and the Wi-Fi technology adopts a CSMA/CA mechanism for channel allocation, it can be understood that if nodes in the Wi-Fi networking and nodes in the star-flash networking perform co-frequency transmission, the nodes in the Wi-Fi networking may be caused to continuously back off and cannot access channels, so that service processing of the nodes in the Wi-Fi networking is greatly interfered. For example, fig. 1c is an application scenario diagram of co-channel transmission in a heterogeneous network according to an embodiment of the present application. G node in star flash networking distributes the channel to the intra-group node to transmit star flash super frame; at this time, the node in Wi-Fi networking listens to the channel before transmitting Wi-Fi data, and when listening to the channel while being busy, the node performs backoff, and when listening to the channel again, the node continues backoff while the channel remains busy. Therefore, when the nodes in the star flash networking and the Wi-Fi networking perform the same-frequency transmission, the nodes in the Wi-Fi networking can be caused to continuously retract, so that the nodes in the Wi-Fi networking can not compete for a channel all the time, and the service processing of the nodes in the Wi-Fi networking is affected.

In view of this, the embodiments of the present application provide a channel resource selection method. In a heterogeneous network constructed by fusion of a plurality of different types of networking, one node may be set as a cooperative node for each type of networking, and a cooperative master node may be determined from a plurality of cooperative nodes. The nodes contained in each type of networking can report first information to the cooperative master node through the cooperative nodes; wherein the first information may include, but is not limited to, one or more of the following: main link transmission type, quality of service (quality of service, qoS) requirements, and channel information collected. The cooperative master node can allocate or reallocate channel resources according to the first information reported by the plurality of nodes in the heterogeneous network. Therefore, by the method, the interference of communication between the nodes can be reduced, so that the data transmission efficiency in the heterogeneous network can be ensured.

In the embodiment of the present application, the node in the heterogeneous network may be electronic devices such as a terminal device and a gateway device.

It is understood that the terminal device of the embodiments of the present application may be a device such as a smart home device (e.g., smart tv, smart screen, smart speaker, etc.), a mobile phone, a tablet computer, a wearable device (e.g., watch, helmet, earphone, etc.), an augmented reality (augmented reality, AR)/Virtual Reality (VR) device, a notebook computer, an ultra-mobile personal computer (ultra-mobile personal computer, UMPC), a netbook, a personal digital assistant (personal digital assistant, PDA), etc. It will be appreciated that the embodiment of the present application does not impose any limitation on the specific type of terminal device.

The embodiment of the present application may be applied to a terminal device, and exemplary embodiments include, but are not limited to, piggybacking Or other operating system. The above-described portable terminal device may also be other portable terminal devices, such as a Laptop computer (Laptop) or the like having a touch-sensitive surface (e.g., a touch panel).

Fig. 2 shows a schematic hardware structure of one possible terminal device. Wherein the terminal device 200 comprises: radio Frequency (RF) circuitry 210, power supply 220, processor 230, memory 240, input unit 250, display unit 260, audio circuitry 270, communication interface 280, and wireless-fidelity (Wi-Fi) module 290. It will be appreciated by those skilled in the art that the hardware structure of the terminal device 200 shown in fig. 2 does not constitute a limitation of the terminal device 200, and the terminal device 200 provided in the embodiment of the present application may include more or less components than those illustrated, may combine two or more components, or may have different component configurations. The various components shown in fig. 2 may be implemented in hardware, software, or a combination of hardware and software, including one or more signal processing and/or application specific integrated circuits.

The following describes the respective constituent elements of the terminal device 200 in detail with reference to fig. 2:

the RF circuitry 210 may be used for receiving and transmitting data during a communication or session. Specifically, the RF circuit 210 receives downlink data of a base station and then sends the downlink data to the processor 230 for processing; in addition, uplink data to be transmitted is transmitted to the base station. Typically, the RF circuitry 210 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier (low noise amplifier, LNA), a duplexer, and the like.

In addition, RF circuit 210 may also communicate with other devices via a wireless communication network. The wireless communication may use any communication standard or protocol including, but not limited to, global system for mobile communications (global system of mobile communication, GSM), general packet radio service (general packet radio service, GPRS), code division multiple access (code division multiple access, CDMA), wideband code division multiple access (wideband code division multiple access, WCDMA), long term evolution (long term evolution, LTE), email, short message service (short messaging service, SMS), and the like.

The Wi-Fi technology belongs to a short-distance wireless transmission technology, and the terminal device 200 can be connected with an Access Point (AP) through a Wi-Fi module 290, so as to realize access to a data network. The Wi-Fi module 290 may be used for receiving and transmitting data during communication.

The star flash technology also belongs to a short-distance wireless transmission technology, and in this embodiment of the present application, the terminal device 200 may also connect to access the G node through the star flash module 291, so as to achieve access to the data network. The star flash module 291 may be used for receiving and transmitting data during communication.

The terminal device 200 may be physically connected to other devices through the communication interface 280. Optionally, the communication interface 280 is connected with the communication interfaces of the other devices through a cable, so as to realize data transmission between the terminal device 200 and the other devices.

The terminal device 200 can also implement communication services, and interact with a service side device, a networking network device, or other terminal devices in a network, so that the terminal device 200 needs to have a data transmission function, that is, the terminal device 200 needs to include a communication module. Although fig. 2 shows the RF circuit 210, the Wi-Fi module 290, the star flash module 291, the communication interface 280, and other communication modules, it is understood that at least one of the above components or other communication modules (such as a bluetooth module) for implementing communication exist in the terminal device 200 for data transmission.

For example, when the terminal device 200 is a mobile phone, the terminal device 200 may include the RF circuit 210, may further include the Wi-Fi module 290, or may include a bluetooth module (not shown in fig. 2); when the terminal device 200 is a computer, the terminal device 200 may include the communication interface 280, may further include the Wi-Fi module 290, or may include a bluetooth module (not shown in fig. 2); when the terminal device 200 is a tablet computer, the terminal device 200 may include the Wi-Fi module, or may include a bluetooth module (not shown in fig. 2). In this embodiment, when the terminal device 200 is a smart home, the terminal device 200 may include the star flash module 291, the Wi-Fi module 290, or a bluetooth module (not shown in fig. 2).

The memory 240 may be used to store software programs and modules. The processor 230 executes various functional applications and data processing of the terminal device 200 by running software programs and modules stored in the memory 240. Alternatively, the memory 240 may mainly include a storage program area and a storage data area. The storage program area may store an operating system (mainly including a kernel layer, a system layer, an application program framework layer, an application program layer, and other software programs or modules corresponding to each other).

In addition, the memory 240 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage device. In this embodiment, if the terminal device 200 is used as a cooperative master node in the heterogeneous network, the first information sent by the multiple nodes and received by the cooperative master node may be stored in the memory 240; if the terminal device 200 is a node in any of the heterogeneous networks, channel information, service information, etc. collected by the node may be stored in the memory 240.

The input unit 250 may be used to receive editing operations of a plurality of different types of data objects such as numeric or character information inputted by a user, and to generate key signal inputs related to user settings and function control of the terminal device 200. Alternatively, the input unit 250 may include a touch panel 251 and other input devices 252.

The touch panel 251, which is also referred to as a touch screen, may collect touch operations thereon or thereabout (such as operations of a user using any suitable object or accessory such as a finger, a stylus, etc. on the touch panel 251 or thereabout) and drive the corresponding connection device according to a preset program.

Alternatively, the other input devices 252 may include, but are not limited to, one or more of a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, mouse, joystick, etc.

The display unit 260 may be used to display information input by a user or information provided to the user and various menus of the terminal device 200. The display unit 260 is a display system of the terminal device 200, and is used for presenting an interface to implement man-machine interaction. The display unit 260 may include a display panel 261. Alternatively, the display panel 261 may be configured in the form of a liquid crystal display (liquid crystal display, LCD), an organic light-emitting diode (OLED), or the like.

The processor 230 is a control center of the terminal device 200, connects respective components using various interfaces and lines, and performs various functions of the terminal device 200 and processes data by running or executing software programs and/or modules stored in the memory 240 and calling data stored in the memory 240, thereby realizing various services based on the terminal device 200. In the embodiment of the present application, the processor 230 may be configured to implement the method provided in the embodiment of the present application.

The terminal device 200 further comprises a power source 220, such as a battery, for powering the various components. Optionally, the power supply 220 may be logically connected to the processor 230 through a power management system, so as to implement functions of managing charging, discharging, and power consumption through the power management system.

As shown in fig. 2, the terminal device 200 further includes an audio circuit 270, a microphone 271 and a speaker 272, which can provide an audio interface between a user and the terminal device 200. The audio circuit 270 may be configured to convert audio data into a signal recognizable by the speaker 272, and transmit the signal to the speaker 272 for conversion by the speaker 272 into a sound signal output. The microphone 271 is used for collecting external sound signals (such as the voice of a person speaking, or other sounds, etc.), converting the collected external sound signals into signals recognizable by the audio circuit 270, and transmitting the signals to the audio circuit 270. The audio circuit 270 may also be used to convert the signal sent by the microphone 271 into audio data, which is then output to the RF circuit 210 for transmission to, for example, another terminal device, or to the memory 240 for subsequent further processing.

Although not shown, the terminal device 200 may further include at least one sensor, a camera, etc., which will not be described herein. The at least one sensor may include, but is not limited to, a pressure sensor, a barometric pressure sensor, an acceleration sensor, a distance sensor, a fingerprint sensor, a touch sensor, a temperature sensor, and the like.

An Operating System (OS) according to the embodiment of the present application is the most basic system software that runs on the terminal device 200. The software system of the terminal device 200 may employ a layered architecture, an event driven architecture, a micro-core architecture, a micro-service architecture, or a cloud architecture. The embodiment of the present application exemplifies the software structure of the terminal device 200 by taking an operating system adopting a hierarchical architecture as an example.

Fig. 3 is a software structural block diagram of a terminal device according to an embodiment of the present application. As shown in fig. 3, the software structure of the terminal device may be a hierarchical architecture, for example, the software may be divided into several layers, each layer having a clear role and division of work. The layers communicate with each other through a software interface. In some embodiments, the operating system is divided into five layers, from top to bottom, an application layer, an application framework layer (FWK), runtime and system libraries, a kernel layer, and a hardware layer, respectively.

The application layer may include a series of application packages. As shown in fig. 3, the application layer may include a camera, settings, skin modules, user Interfaces (UIs), third party applications, and the like. Among other things, third party applications may include wireless local area networks (wireless local area network, WLAN), music, conversations, bluetooth, video, etc.

In one possible implementation, the application may be developed using the java language, by calling an application programming interface (application programming interface, API) provided by the application framework layer, through which the developer may interact with the underlying layers of the operating system (e.g., hardware layer, kernel layer, etc.) to develop its own application. The application framework layer is essentially a series of services and management systems for the operating system.

The application framework layer provides an application programming interface and programming framework for the application of the application layer. The application framework layer includes some predefined functions. As shown in FIG. 3, the application framework layer may include a shortcut icon management module, a window manager, a content provider, a view system, a phone manager, a resource manager, a notification manager, and the like.

The shortcut icon management module is used for managing shortcut icons displayed on the terminal device, such as creating shortcut icons, removing shortcut icons, monitoring whether the shortcut icons meet display conditions, and the like.

The window manager is used for managing window programs. The window manager can acquire the size of the display screen, judge whether a status bar exists, lock the screen, intercept the screen and the like. The content provider is used to store and retrieve data and make such data accessible to applications. The data may include video, images, audio, calls made and received, browsing history and bookmarks, phonebooks, etc.

The view system includes visual controls, such as controls to display text, controls to display pictures, and the like. The view system may be used to build applications. The display interface may be composed of one or more views. For example, a display interface including a text message notification icon may include a view displaying text and a view displaying a picture.

The telephony manager is arranged to provide communication functions for the terminal device. Such as the management of call status (including on, hung-up, etc.).

The resource manager provides various resources for the application program, such as localization strings, icons, pictures, layout files, video files, and the like.

The notification manager allows the application to display notification information in a status bar, can be used to communicate notification type messages, can automatically disappear after a short dwell, and does not require user interaction. Such as notification manager is used to inform that the download is complete, message alerts, etc. The notification manager may also be a notification in the form of a chart or scroll bar text that appears on the system top status bar, such as a notification of a background running application, or a notification that appears on the screen in the form of a dialog window. For example, a text message is prompted in a status bar, a prompt tone is emitted, the terminal equipment vibrates, and an indicator light blinks.

The runtime includes a core library and a virtual machine. The runtime is responsible for the scheduling and management of the operating system.

The core library consists of two parts: one part is a function which needs to be called by java language, and the other part is a core library of an operating system. The application layer and the application framework layer run in a virtual machine. The virtual machine executes java files of the application program layer and the application program framework layer as binary files. The virtual machine is used for executing the functions of object life cycle management, stack management, thread management, security and exception management, garbage collection and the like.

The system library may include a plurality of functional modules. For example: surface manager (surface manager), media library (media library), three-dimensional graphics processing library (e.g., openGL ES), two-dimensional graphics engine (e.g., SGL), etc.

The surface manager is used to manage the display subsystem and provides a fusion of two-dimensional and 3D layers for multiple applications.

Media libraries support a variety of commonly used audio, video format playback and recording, still image files, and the like. The media library may support a variety of audio video encoding formats, such as: MPEG4, h.264, MP3, AAC, AMR, JPG, PNG, etc.

The three-dimensional graphic processing library is used for realizing three-dimensional graphic drawing, image rendering, synthesis, layer processing and the like.

A two-dimensional graphics engine is a drawing engine that draws two-dimensional drawings.

In some embodiments, a three-dimensional graphics processing library may be used to render three-dimensional motion trail images and a two-dimensional graphics engine may be used to render two-dimensional motion trail images.

The kernel layer is a layer between hardware and software. The inner core layer at least comprises a display driver, a camera driver, an audio driver and a sensor driver.

The hardware layer may include various types of sensors, such as acceleration sensors, gravity sensors, touch sensors, and the like.

Typically, the terminal device 200 may run multiple applications simultaneously. More simply, an application may correspond to one process, and more complex, an application may correspond to multiple processes. Each process is provided with a process number (process ID).

It should be understood that in embodiments of the present application, "at least one (item) below" or the like, refers to any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one (one) of a, b or c may represent: a, b, c, a and b, a and c, b and c, or a, b and c, wherein a, b and c can be single or multiple. "plurality" means two or more. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a alone, a and B together, and B alone, wherein A, B may be singular or plural. The character "/" generally indicates that the context-dependent object is an "or" relationship.

In addition, it should be understood that in the description of this application, the words "first," "second," and the like are used merely for distinguishing between the descriptions and not for indicating or implying any relative importance or order.

It should be understood that the hardware structure of the terminal device may be shown in fig. 2, the software architecture may be shown in fig. 3, where a software program and/or a module corresponding to the software architecture in the terminal device may be stored in the memory 240, and the processor 230 may execute the software program and the application stored in the memory 240 to perform a flow of a channel resource selection method provided in an embodiment of the present application.

In order to facilitate understanding of a channel resource selection method provided in the present application, an implementation procedure of the method provided in the present application is described below in conjunction with what is shown in fig. 4 to 10.

Fig. 4 is a schematic view of a scenario of a channel resource selection method according to an embodiment of the present application. Taking the deployment of the heterogeneous network in the home network as an example, the scene is a heterogeneous network which is obtained by fusion based on star flash networking and a plurality of Wi-Fi networking; the star flash networking can be used for networking of home theater equipment, wi-Fi networking can be used for connecting terminal equipment with gateway equipment (or a router), and Wi-Fi P2P connection between the terminal equipment and the terminal equipment. It can be understood that the heterogeneous network may be deployed in other local area networks, and the heterogeneous network may also be obtained by fusing other types of networks, such as bluetooth networking, etc., which is not limited in this application.

In the star flashover networking shown in fig. 4, a home theater device configured based on a star flashover technology may include: the intelligent screen and a plurality of intelligent audio amplifier of connecting the intelligent screen. Wherein, intelligent screen can be used to provide the centrally located sound, intelligent audio amplifier 1 can be used to provide right surround sound, intelligent audio amplifier 2 can be used to provide right channel sound, intelligent audio amplifier 3 can be used to provide left surround sound, and intelligent audio amplifier 4 can be used to provide left channel sound in fig. 4. Let the intelligent sound box 1 be the G node in the star flashover network, the intelligent sound box 2, the intelligent sound box 3 and the intelligent sound box 4 be a plurality of T nodes in the star flashover network. It can be understood that each node in the star flashover networking can establish a star flashover link with other nodes based on the star flashover technology, and perform data transmission through the star flashover link.

In the Wi-Fi networking 1 shown in fig. 4, the mobile phone 1 may be connected to the gateway device through Wi-Fi, establish a Wi-Fi link with the gateway device, and perform data transmission through the Wi-Fi link. The gateway device may provide WLAN in a certain area, and the mobile phone 1 may obtain the WLAN name of the gateway device by means of active scanning or manual addition, and attempt to access the WLAN provided by the gateway device, so as to connect to the gateway device through Wi-Fi; it will be appreciated that if the WLAN of the gateway device is provided with a corresponding key, the user needs to input the corresponding key on the handset 1 to access the WLAN of the gateway device.

In the Wi-Fi networking 2 shown in fig. 4, the mobile phone 2 may initiate Wi-Fi P2P connection with the mobile phone 3, establish a Wi-Fi P2P link with the mobile phone 3, and perform data transmission through the Wi-Fi P2P link. The mobile phone 2 may be connected with Wi-Fi P2P of the mobile phone 3 through the smart phone; for example, if some information needs to be shared by the user during the use of the mobile phone 2, and a sharing mode is selected from a plurality of sharing modes, the sharing target is the mobile phone 3, so as to initiate Wi-Fi P2P connection with the mobile phone 3.

The above-mentioned star flash link, wi-Fi link and Wi-Fi P2P link are all established by means of channel resources (in this embodiment, if channel resource selection is implemented on a channel granularity, the channel resources may be directly understood as channels, and if channel resource selection is implemented on a finer granularity, the channel resources may be understood as time domain resources or frequency domain resources included in the channels, for example, the time domain resources may be time slices where radio frames are located), so that data transmission is implemented, and therefore, a corresponding channel needs to be allocated before the link is established, for example, a channel may be requested by a link initiator, or a management node in the network may also actively allocate a channel. For example, fig. 5a shows a schematic view of a networking scenario provided in an embodiment of the present application. Currently, channel allocation may be implemented in a networking using a group-based optimal channel management technology, and the networking may include a master node (master) and at least one intra-group node (device), for example, the networking node 1, the networking node 2, the networking node 3, and the networking node 4 shown in fig. 5 a; the master may be, for example, a gateway in the Wi-Fi network 1 shown in fig. 4 or a Wi-Fi P2P link initiator in the Wi-Fi network 2, and the device may be, correspondingly, a mobile phone 1 in the Wi-Fi network 1 or a mobile phone 3 in the Wi-Fi network 2 shown in fig. 4. The device in the networking can detect the channel information and report the channel information to the master, and can also send the service information to the master; the master in the network can perform channel modeling and allocate channels for nodes in the network. In addition, the master within the networking may also have the feature of device. When a device in the networking needs to establish a communication link (such as a Wi-Fi link or a Wi-Fi P2P link), as shown in fig. 5b, in some scenarios, the networking node 1 may establish a communication link with the networking node 2, and the networking node 3 may establish a communication link with the networking node 4, and may acquire a channel through the following interaction flow:

Step 501, the device applies for a channel from the master. When the device applies for a channel to the master, service information can be sent, where the service information is used for the master to select a channel for the device. The service information may include, but is not limited to, at least one of the following information: service type, service requirement. For example, the service type may be a screen-drop service, a picture or video sharing service, etc., and the service requirement may be delay sensitive, high bandwidth, etc.

Step 502, master can decide out the target channel according to the channel decision model. For example, the master may determine, according to channel information and channel usage status included in a certain range where the device is located, and according to the application of the device, an appropriate channel to be allocated to the device. For example, the master decides a target channel for the device according to the service information of the device; for example, if the traffic demand of the device is high bandwidth, the master may select multiple channels for the device.

Step 503, master updates the channel information table. The master may receive channel information reported by a plurality of devices in the network, where the channel information may include, but is not limited to, one of the following information: a strength indication (received signal strength indicator, RSSI) of the received signal of the channel, a duty cycle of the channel, a channel primary band, a channel bandwidth, a type of traffic on the self-used channel.

Also, the master may maintain a channel information table that may include, but is not limited to, at least one of the following: the network identifier, the number of nodes included in the network, the node identifier (for example, the name, the MAC address, etc. of the nodes), the channel parameters (which can be obtained according to the channel information reported by the device, for example, the RSSI of the channel, the duty cycle of the channel, the channel main band, the channel bandwidth, the service type on the self-used channel), the time stamp, and the aging time rule. The maintained channel information table may be updated after the master allocates a channel or upon receiving updated channel information transmitted by devices within the network.

In addition, the device can report the channel information to the master through a master active Push mechanism or a device active Push mechanism. For example, if the device adopts a master active Pull mechanism, channel information can be reported to the master based on the request of the master. For another example, if the device employs a device active Push mechanism, the channel information may be actively reported after the device is powered up, after the channel information is changed, or periodically.

Step 504, the master returns channel indication information of the target channel to the device. Illustratively, the channel indication information of the target channel may include, but is not limited to, a channel primary band, a channel bandwidth, and the like, for determining the target channel.

In view of the above, if there is only one networking in the heterogeneous network, or if there is a plurality of networking but there is no coincidence of available spectrum resources corresponding to the plurality of networking, in the heterogeneous network, channel allocation may be implemented within each networking, for example, by the technique shown in fig. 5a and 5 b. However, because the channels in the star-flash networking are distributed by adopting a centralized scheduling mechanism, the channels in the Wi-Fi networking are actively competing by adopting a CSMA/CA mechanism, and the available spectrum resources corresponding to the star-flash networking and the Wi-Fi networking are overlapped. In the related art, when the node of the star flash network and the node in the Wi-Fi network perform co-frequency transmission, channel interference may exist, so that the service transmission efficiency of the node in the Wi-Fi network is poor.

In the embodiment of the present application, in each network included in a heterogeneous network, a network node included in the network may be defined as a cooperative node in the network; and, one cooperative master node may be defined from among a plurality of cooperative nodes defined in the heterogeneous network, or one network node may be defined as a cooperative master node from among all network nodes included in the heterogeneous network. The definitions of the cooperative nodes and the cooperative master nodes in the heterogeneous network may be preconfigured, or may be determined by a preconfigured definition policy, or may be determined by other alternative implementations, which are not limited in this application. For example, the defining policy of the cooperative node in the heterogeneous network may be a master node in each network, such as a G node in the star flash network, a wireless Access Point (AP) in the WLAN network, or a link initiator in other networks. The cooperative master node in the heterogeneous network may be a network node or a cooperative node in the heterogeneous network that has a higher processing power or is idle. It should be noted that, the cooperative node or the cooperative master node in the embodiment of the present application may also be used as a network node to implement the implementation procedure of the network node in the embodiment of the present application. It can be understood that the cooperative node not only has the function of the cooperative node, but also has the function of the network node; the cooperative master node not only has the function of the cooperative master node, but also has the function of the cooperative node, and also has the function of the network node.

Fig. 6 is a schematic diagram of another scenario of a channel resource selection method according to an embodiment of the present application. Optionally, assume that a G node in the star-flashing network is used as a star-flashing cooperative node, a gateway in the Wi-Fi network 1 is used as a first Wi-Fi cooperative node, and a Wi-Fi P2P initiator in the Wi-Fi network 2 is used as a second Wi-Fi cooperative node; also, assume that the first Wi-Fi cooperative node is regarded as a cooperative master node in the heterogeneous network shown in fig. 4. When the application is implemented, the cooperative master node may be configured to select a channel or reselect a channel for a network node in a heterogeneous network. The network nodes in the heterogeneous network establish communication links according to the channels selected by the cooperative master node or the reselected channels, where the communication links may be, for example, the star-flash links, wi-Fi links, and Wi-Fi P2P links described above, and may be determined according to the network where they are located and the service types that need to be performed. Therefore, in the heterogeneous network, even if network nodes for carrying out the same-frequency transmission exist, the channel interference can be reduced based on the centralized allocation of the cooperative master nodes, the problem that the nodes cannot compete to the channel all the time is avoided, and the transmission efficiency of the heterogeneous network is ensured.

The cooperative nodes in the heterogeneous network can be connected through any communication link which can be established; for example, the communication link that may be established is a Bluetooth link, a Wi-Fi link, or a Wi-Fi P2P link, among others. In fig. 6, a star-flashing cooperative node (intelligent speaker 1) and a first Wi-Fi cooperative node (gateway) may be connected through a bluetooth low energy (bluetooth low energy, BLE) link, and the first Wi-Fi cooperative node (gateway) and a second Wi-Fi cooperative node (handset 2) may also be connected through a BLE link. Alternatively, not shown in fig. 6, the cooperative nodes may be further connected through Wi-Fi links, for example, the smart speaker 1 and the mobile phone 2 may also access a Wi-Fi network deployed by the gateway, so that Wi-Fi links may be respectively established with the gateway.

Based on the above description, referring to fig. 7, an interactive flow diagram of a channel resource selection method provided in an embodiment of the present application may include the following flows:

step 701, the cooperative master node receives channel information collected from at least one network node.

When the method is implemented, when the heterogeneous network is established, the network nodes in the network can report the collected channel information directly to the cooperative master node or indirectly through the cooperative nodes of the networking. Or if a new network node exists to join the heterogeneous network, the newly accessed network node can report the collected channel information directly to the cooperative master node or indirectly through the cooperative nodes of the networking. Or, the network node in the heterogeneous network can report the collected updated channel information to the cooperative master node directly or indirectly through the cooperative nodes in the network. It should be noted that, referring to the intra-networking interaction flow shown in fig. 5b, in the heterogeneous network, a network node in the network may implement reporting of channel information by using a cooperative master node active Push mechanism or a node active Push mechanism.

Alternatively, the network node may be a common network node in a network, such as a T node in a star-flash network shown in fig. 4, or a handset 1 in a Wi-Fi network 1, or a link-building target party (handset 3) in a Wi-Fi network 2. If the network node is any common network node (such as the first network node in fig. 7) in any group of heterogeneous networks, the channel information can be indirectly reported to the cooperative master node through the cooperative node (such as the first cooperative node in fig. 7) in the group; or, according to the configuration of the actual scenario, if a communication link exists between the first network node and the cooperative master node, channel information may also be directly reported to the cooperative master node, for example, a bluetooth link exists between the first network node and the cooperative master node. It can be understood that in the heterogeneous network, part of the common network nodes can report channel information indirectly through the cooperative nodes in the networking, or another part of the common network nodes can report channel information directly to the cooperative master node, and the configuration can be performed according to actual scenes during implementation, which is not limited in the application; for example, the first network node indirectly reports the collected channel information to the cooperative master node through the first cooperative node, and the second network node directly reports the collected channel information to the cooperative master node.

Alternatively, the network node may also be a cooperative node in the networking, such as a G node in the star-flash networking shown in fig. 4, or a gateway in the Wi-Fi networking 1, or a link-building initiator (handset 2) in the Wi-Fi networking 2. If the node is a cooperative node in any group of heterogeneous networks (such as the first cooperative node in fig. 7), based on the content shown in fig. 6, the first cooperative node may directly report the collected channel information to the cooperative master node through a communication link with the cooperative master node.

Wherein the channel information may include, but is not limited to, at least one of the following information: the main link type employed (e.g., star flash link or Wi-Fi link), channel RSSI, duty cycle of the channel, channel primary band, channel bandwidth, traffic type on the self-used channel. The network node can acquire channel information through active scanning and the like; it is understood that the channel information collected by the network node may include information of one or more channels. The channel information reported by the network node may be represented in a table or the like, where the table may include information such as a channel RSSI, a channel duty cycle, a channel primary frequency band, and a channel bandwidth, which respectively correspond to the multiple channels.

In an alternative embodiment, the application may be implemented by dividing the communication link between the network nodes into a main link (or referred to as a "traffic link" or the like) and an auxiliary link (or referred to as a "secondary link", "control link" or the like). The main link is used for carrying traffic transmission between network nodes, and the auxiliary link is used for carrying management control functions of the network nodes. The network node may report the channel information through the auxiliary link, or send the request information for applying for a channel through the auxiliary link, which is referred to in the following embodiments, and receive, through the auxiliary link, a channel information table issued by the cooperative master node through broadcasting (or multicasting, or unicasting) or the like, or channel indication information of a fed back target channel, which is referred to in the following embodiments. In addition, the auxiliary link may be of a different link type than the main link, for example, if the main link is a star flash link, the auxiliary link may be a bluetooth link or a Wi-Fi link. It should be noted that the link type included in the channel information described in the foregoing may be the link type of the main link. Therefore, the control plane information and the service plane information in the heterogeneous network are separated, so that the transmission of the control plane information can be ensured, and the loss of the control plane information is avoided.

Step 702, the cooperative master node maintains a channel information table of the heterogeneous network according to channel information from the at least one network node.

Illustratively, the cooperative master node receives channel information from a network node, and if the channel information table includes historical channel information of the network node, the channel information table may be updated according to the channel information reported by the network node at this time; if the channel information table does not contain the historical channel information of the network node, the channel information of the network node can be newly added in the channel information table so as to update the channel information table.

In an alternative embodiment, the cooperative host node may actively select or actively reselect a channel for a network node. Illustratively, therefore, the cooperating master node may select an appropriate channel for a network node to which no channel is allocated based on the channel information table; alternatively, the appropriate channel may be reselected for the network node to which the channel has been allocated. As another example, the network node may report traffic information in addition to the channel information, which may include, but is not limited to, at least one of the following: service type, service requirement; for example, the service type may be a screen-drop service, a picture or video sharing service, etc., and the service requirement may be delay sensitive, high bandwidth, etc. The cooperative master node can select a proper channel for the network node without the channel allocation according to the channel information table and the service information; or, an appropriate channel may be reselected for the network node of the allocated channel, for example, if the traffic demand of the network node of the allocated channel changes, a channel with a larger bandwidth may be reselected or a larger number of channels may be reselected for the network node of the allocated channel. It can be understood that the channel resource selection method in the embodiments of the present application may include a first channel selection method and may also include a channel reselection method.

In another alternative embodiment, the cooperative master node may also actively select or reselect an accessible set of channel resources for networking. For example, the cooperative master node may allocate available channel resources for different networks according to the channel information table, and notify the cooperative nodes of the networks. In this way, the cooperating node may select or reselect a suitable channel for network nodes within the network based on the allocated available channel resources. In this embodiment, the cooperative node may receive service information reported by the network node in the network, and the content related to the service information may be referred to in the previous embodiment. The cooperative node can more precisely allocate the available channel resources according to the available channel resources and the service information reported by the network node.

It may be appreciated that the network node may report both channel information and service information, for example, may report first information, where the first information includes the channel information and the service information. Alternatively, the network node may also report the channel information and the service information separately, for example, the network node may report the channel information periodically and report the service information when there is a service requirement; for another example, the network node may report channel information to the cooperative master node, so that the cooperative master node updates a channel information table and allocates available channel resources for each network, and report traffic information to the cooperative node, so that the cooperative node allocates channel resources for the network node according to the allocated available channel resources for the network.

Based on the embodiment, after the cooperative master node selects a channel for the network node, the channel information table may be updated, and the following step 703 may be performed continuously:

step 703, the cooperative master node sends the channel information table to at least one network node. Illustratively, the cooperative master node may send the channel information table to all network nodes in the network by broadcasting. Or, the cooperative master node may send the channel information table to a network node in a designated network in a multicast manner, where a network identifier of the designated network may be indicated in a packet carrying the channel information table; for example, the channel information table may be sent to a network node included in Wi-Fi network 1 in fig. 4. Or, the cooperative master node may send the channel information table to the designated network node in a unicast manner, and at this time, the packet carrying the channel information table may indicate the network identifier of the designated network node, for example, the channel information table may be sent to the cooperative node in each network. In this way, the cooperative master node can notify the network node of the channel information allocated to the network node. Optionally, the cooperative master node may send the channel information table through an auxiliary link with a network node.

In another alternative embodiment, the cooperative host node may also passively select or reselect a channel for a network node in response to a channel application from the network node. Steps 704 to 706 as follows:

step 704, the cooperative master node receives request information of a first network node for applying for a channel.

By taking the first network node as a common network node of any group of networks as an example, the first network node can send request information to the cooperative master node through a cooperative node (assumed to be the first cooperative node) in the group of networks; or if a communication link exists between the first network node and the cooperative master node, the request information may also be directly sent to the cooperative master node. It may be appreciated that if the first network node is a cooperative node of any group of networks, the request information may be directly sent to the cooperative master node.

Optionally, the request information may carry a channel identifier of the target channel applied by the first network node. Illustratively, the first network node may actively scan the channel information, and decide a target channel according to the acquired channel information and the self-service information; and then requests from the cooperating master whether the target channel can be accessed.

Alternatively, the request information may include service information, where the service information is used to indicate the channel requirement of the application. The service information may include, but is not limited to, at least one of the following information: service type, service requirement. For example, the service type may be a screen-drop service, a picture or video sharing service, etc., and the service requirement may be delay sensitive, high bandwidth, etc. Illustratively, the first network node does not need to decide the target channel itself, and waits for the target channel allocated by the cooperative master node after indicating the self service information to the cooperative master node.

Wherein, the first network node applying for a channel may be triggered when the first network node does not allocate a channel; for example, the first network node may trigger the channel application procedure after a new network entry, after a re-power-up, or after a change from a dormant state to an active state. Or, the first network node applies for the channel and may be triggered when the first network node needs to change the channel; for example, the first network node may trigger a channel flow for applying for change allocation by changing the traffic type (e.g., changing from sharing text to sharing video), or changing the delay sensitivity requirement (e.g., changing from less delay sensitivity to more delay sensitivity), or changing the bandwidth requirement (e.g., changing from low bandwidth to high bandwidth).

In addition, the cooperative master node may receive the request information through an auxiliary link with the first network node.

Step 705, the cooperative master node selects a target channel resource for the first network node according to the channel information table.

Illustratively, the cooperative master node may determine an allocable set of channel resources according to the channel information table; then, a suitable target channel is selected for the first network node from the set of allocable channel resources.

In another example, the cooperative master node may determine, according to the channel information table, a target channel resource selected for the first network node; and then, the channel indication information of the target channel resource can be returned to the first network node or fed back to a first cooperative node of the network where the first network node is located. In this way, the first network node or the first cooperating node may select a target channel from the allocable channel resources for access.

Optionally, the cooperative master node may perform channel modeling, and select channel resources for the first network node through a channel decision algorithm. Or, the cooperative master node may also select channel resources for the first network node according to a preset sequence; for example, the preset sequence may be a channel identification sequence, and the cooperative master node may select channel resources for the first network node according to the sequence of channel identifications from small to large.

It should be noted that, in the embodiment of the present application, the channel resource may be a frequency domain resource or a time domain resource. In an alternative embodiment, the cooperative master node may select available frequency domain resources for the first network node, in which case the first network node may perform data transmission on the available frequency domain resources. In another alternative embodiment, the cooperative master node may also select an available time domain resource for the first network node, where the first network node may perform data transmission on the available time domain resource in this scenario; for example, if the channel resource allocated by the cooperative master node to the first network node is transmitted on the same frequency domain resource as the second network node, in order to avoid channel interference, the time domain resource may be further allocated on the frequency domain resource.

Step 706, the cooperative master node feeds back channel indication information of the target channel to the first network node.

Wherein the cooperative master node may feed back channel indication information of the target channel through an auxiliary link with the first network node. In addition, the channel indication information of the target channel may be used to indicate the target channel, or may also indicate time domain resources on the target channel, so that the first network node determines available target channel resources.

Step 707, the first network node determines a target channel according to the channel information table in step 703 or according to the channel indication information of the target channel in step 706, and accesses the target channel.

For example, if the channel information indicated in the channel information table is channel information of an allocable channel resource, the first network node may select an appropriate channel from the allocable channel resource to determine as the target channel. And the first network node can also report the channel information of the selected target channel to the cooperative master node, so that the cooperative master node can update the channel information table in time.

In another example, if the channel information table indicates the channel indication information of the target channel, or the first network node receives the channel indication information of the target channel fed back by the cooperative node, the first network node may directly determine the target channel; the first network node then accesses the target channel.

In the implementation of the present application, after the first network node accesses the target channel, data transmission may be performed on the target channel to support service processing.

Step 708, if the first network node information monitors a preset change event, sending a change instruction to a cooperative master node, or sending a change instruction to the cooperative master node through the first cooperative node; wherein the change indication is used by the cooperating master node to reselect a target channel resource for the first network node or to reselect a target channel resource set for the first network. Illustratively, the change indication may be implemented by returning to execute step 701 or returning to execute step 704.

Wherein the preset change event comprises, but is not limited to, at least one of the following events: and changing service information and channel information. In this way, if the cooperative master node receives the channel information or the service information or the request information re-reported from the first network node, the target channel can be actively re-selected or passively re-selected for the first network node. Or in the scenario that the cooperative master node determines the allocable channel resources for the networking, the first network node can report the service information to the cooperative node in the networking, so that the cooperative node reselects the target channel for the first network node.

It should be noted that, the cooperative node in each networking may be used as a network node, and the implementation procedure of the network node in the foregoing embodiment may also be executed. The first network node may be a first cooperative node.

It should be further noted that the cooperative master node may also be used as a network node, or may perform the implementation procedure of the network node in the foregoing embodiment. For example, when the cooperative master node is used as a network node, the channel information may be reported through an internal reporting mode, or the request information may be sent and the channel indication information of the target channel fed back may be received through an internal receiving and transmitting mode.

For ease of understanding, the implementation flow of the method provided in the present application will be described with reference to the scenarios shown in fig. 4 and 6. Several possible scenarios may be included:

scenario 1, assuming that the heterogeneous network is initially constructed, channels allowed to be accessed by each group of networks in the heterogeneous network are not allocated yet, and the cooperative master node realizes channel resource selection through the following sub-scenarios, and the channel resource selection result after selection can refer to fig. 8a.

Scenario 1-1: the first star-flashing T node (intelligent sound box 2) sends request information 1 for applying a channel to the star-flashing cooperative node (intelligent sound box 1), wherein the request information 1 can be the uplink bandwidth with the service requirement of 10M. And, the intelligent sound box 1 detects that the downlink data sent to the intelligent sound box 2 needs 5M downlink bandwidth. Besides the star flash link, the intelligent sound box 2 and the intelligent sound box 1 can also comprise a Bluetooth link as an auxiliary link; in this way, the smart speaker 2 may send the request information 1 through the auxiliary link.

Then, the intelligent sound box 2 may send request information 2 for applying a channel to a cooperative master node (gateway) through a BLE link between the intelligent sound box 2 and the gateway, where the request information 2 may be a service requirement between the intelligent sound box 1 and the intelligent sound box 2 is 10M uplink bandwidth and 5M downlink bandwidth.

The gateway receives and responds to the request message 2 (in combination with what is shown in fig. 1 b) to select an available star flash channel 125 with a bandwidth of 20MHz for the smart speaker 2 as a target channel for the smart speaker 2 to transmit data with the smart speaker 1. Then, the gateway may send out channel indication information of the target channel allocated to the intelligent sound box 2 in a heterogeneous network through broadcasting or the like. In this way, other network nodes or related network nodes in the heterogeneous network can be timely informed that the channel 125 is occupied, and interference to data transmission between the intelligent sound box 2 and the intelligent sound box 1 is avoided.

Scenario 1-2: the cooperative master node (gateway) is used for requesting the transmission bandwidth of 80M according to the request information 3 sent by itself (the first Wi-Fi cooperative node), so as to perform data transmission with the first Wi-Fi node (mobile phone 1) in the Wi-Fi network 1. As shown in connection with fig. 1b, the gateway may select the idle Wi-Fi channels 52 to 64 for itself as target channels for the gateway to transmit data with the handset 1.

Scenario 1-3: if the second Wi-Fi cooperative node (handset 2) initiates Wi-Fi P2P connection with the second Wi-Fi node (handset 3), the handset 2 responds to the request of Wi-Fi P2P connection and can send request information 4 through a BLE link with the cooperative master node (gateway), where the request information 4 is used for requesting a transmission bandwidth of 80M. As shown in connection with fig. 1b, the gateway may select the idle Wi-Fi channels 149 to 161 for the handset 2 as target channels for the handset 2 to transmit data with the handset 3.

The method can be obtained through the scene 1, and based on the channel resource selection of the network node by the cooperative master node in the heterogeneous network, compared with the realization mode of self-allocation of channels by each group of networks, the method provided by the application can avoid channel interference in the same-frequency transmission scene, thereby guaranteeing the data transmission efficiency of the heterogeneous network.

Based on scenario 2, if the service requirements in scenario 1-1 and scenario 1-2 are changed, the cooperative master node may implement channel reselection, and the channel resource selection result after reselection may refer to fig. 8b.

Scene 2-1, the service requirement between the intelligent sound box 2 and the intelligent sound box 1 is changed to 120M transmission bandwidth.

Scene 2-2, the service requirement between the gateway and the mobile phone 1 is changed to 20M transmission bandwidth.

At this point, the gateway may reselect star flash channels 125-541 for the smart-box 2 and Wi-Fi channel 64 for the gateway in response to the change event for scenario 2-1 and scenario 2-2.

According to the scenario 2, the cooperative master node in the heterogeneous network reselects the channel for the network node, so that the plurality of network nodes can be prevented from carrying out the same-frequency transmission, and further channel interference caused by the same-frequency transmission can be avoided, so that the data transmission efficiency of the heterogeneous network can be ensured.

Scenario 3, see fig. 9, assuming that the Wi-Fi link with a high load already occupies Wi-Fi channels 36 to 64 and that there is severe interference on channels 157 to 165, so that the network node included in the star flashover networking in the heterogeneous network and the network node included in the Wi-Fi networking cannot access spectrum resources corresponding to these channels; i.e., only the spectrum resources corresponding to Wi-Fi channels 149 and 153 (i.e., star flash channels 2479 and 2563) may be allowed access.

For example, in a heterogeneous network, if only network nodes included in the Wi-Fi networking apply for a channel, the cooperative master node may instruct the network nodes to fairly preempt the channel using a CSMA/CA mechanism. At this time, the heterogeneous network only applies for Wi-Fi channels, so that the problem of channel contention interference does not exist, and the problem that network nodes cannot compete for channels all the time is avoided.

In another example, if there is not only Wi-Fi network node included in Wi-Fi networking applying for Wi-Fi channel, but also star-flash network node included in star-flash networking applying for star-flash channel, currently idle Wi-Fi channels 149 and 153 and idle star-flash channels 2479 and 2563 have the same spectrum resources corresponding to each other, in order to avoid channel interference, the cooperative host node may perform centralized allocation of channels for Wi-Fi network node and star-flash network node. Optionally, the cooperative master node may implement channel selection for the Wi-Fi network node and the star-flash network node, respectively, according to a channel decision model.

In an optional embodiment, in a scenario that the allocable channel resources cannot support the number of channels applied by a plurality of network nodes, the cooperative master node may further comprehensively consider one or more factors such as adjacent frequency gain after channel adjacent frequency interference exists, co-frequency gain under channel preemption competition exists, delay or bandwidth requirement of each network node, and the like according to the applications of the plurality of network nodes, so as to realize channel allocation, and achieve better gain of channel allocation in the heterogeneous network.

Optionally, if the adjacent frequency gain is greater than the same frequency gain, the cooperative master node may allocate the allocable channel resources to the plurality of network nodes according to a certain proportion. For example, in scenario 3 above, the cooperative host node selects Wi-Fi channel 149 for the Wi-Fi network node and star-flash channel 2563 for the star-flash network node, i.e. the Wi-Fi network node and the star-flash network node occupy 20M transmission bandwidth, respectively.

Alternatively, if the adjacent frequency gain is less than or equal to the same frequency gain, the cooperative master node may commonly allocate the allocable channel resources to the plurality of network nodes. For example, in scenario 3 above, the cooperative host node indicates that the Wi-Fi network node may use the CSMA/CA mechanism to compete for the Wi-Fi channels 149 and 153, and indicates that the G node of the star flashover network where the star flashover network node is located allocates the star flashover channels 2479 and 2563. Thus, the CSMA/CA mechanism has a random backoff principle, and generally occupies a channel after the star flash network node transmits data.

In another alternative embodiment, in a scenario that the allocable channel resources cannot support the number of channels applied by multiple network nodes, the cooperative master node may also implement channel allocation from a time domain resource perspective.

By way of example, referring to fig. 10, a schematic diagram of time domain resource allocation according to an embodiment of the present application is provided by taking a star flash superframe based on time domain resources as an example. In the star-burst networking, the allocation of channel resources in the time domain can be realized based on symbol granularity, for example, a time slice where part of symbols in 8 symbols in one radio frame are located can be allocated to a G node, and a time slice where another part of symbols are located can be allocated to a T node, so that although the G node and the T node adopt the same frequency domain resource, transmission interference can be avoided through the allocation of the time domain resource. And, taking a channel with a bandwidth of 20MHz as an example, assuming that the channel contains 38 subcarriers, the G node may allocate specific subcarriers for the G node to transmit data to the T node or the T node to transmit data to the G node according to the actual situation of the channel. Wherein sg#0 and st#47 shown in fig. 10 are overhead symbols; the gap (gap) is a transmission gap, and can be used to provide a preparation time for transmission direction switching, etc.

In combination with the content shown in fig. 10, in the embodiment of the present application, the cooperative master node may further perform time domain resource allocation when allocating the same frequency domain resource to the Wi-Fi network node and the star-flash network node, for example, allocate a time slice where the radio frame 1 shown in fig. 10 is located to the star-flash network node to transmit data, and allocate a time slice where the radio frame 2 is located to the Wi-Fi network node to transmit data, so that the same frequency domain resource can be adopted in time, and channel interference can be avoided through allocation of the time domain resource. In the embodiment of the present application, the allocation of the time domain resources may be based on the granularity of the radio frame, or may be based on the granularity of a superframe consisting of the radio frame, which is not limited in the present application.

According to the method provided by the application, the difference and the channel allocation conflict among a plurality of networks are comprehensively considered through the cooperative master node in the heterogeneous network, so that the channel can be selected for the network node in a centralized mode, channel application interference possibly existing in the network nodes of different networks can be avoided, and the data transmission efficiency of the network nodes in the heterogeneous network and the QoS of service processing can be ensured.

Based on the above embodiments, the present application further provides an electronic device, including a plurality of functional modules; the plurality of functional modules interact to realize functions executed by the cooperative master node or the first cooperative node or the first network node in the methods described in the embodiments of the present application. For example, steps 701-706 performed by the cooperating master node in the embodiment of fig. 7 are performed, or steps 701, 703-704, 706-708 performed by the first cooperating node in the embodiment of fig. 7 are performed, or steps 701, 703-704, 706-708 performed by the first network node in the embodiment of fig. 7 are performed. The plurality of functional modules may be implemented based on software, hardware, or a combination of software and hardware, and the plurality of functional modules may be arbitrarily combined or divided based on the specific implementation.

Based on the above embodiments, the present application further provides an electronic device, where the electronic device includes at least one processor and at least one memory, where the at least one memory stores computer program instructions, and when the electronic device is running, the at least one processor performs functions performed by the electronic device in the methods described in the embodiments of the present application. For example, steps 701-706 performed by the cooperating master node in the embodiment of fig. 7 are performed, or steps 701, 703-704, 706-708 performed by the first cooperating node in the embodiment of fig. 7 are performed, or steps 701, 703-704, 706-708 performed by the first network node in the embodiment of fig. 7 are performed.

Based on the above embodiments, the present application further provides a channel resource selection system, which includes the cooperative master node, at least one cooperative node, and at least one network node in the foregoing embodiments.

Based on the above embodiments, the present application also provides a computer program product comprising: a computer program (which may also be referred to as code, or instructions), when executed, causes a computer to perform the methods described in the embodiments of the present application.

Based on the above embodiments, the present application also provides a computer-readable storage medium having stored therein a computer program which, when executed by a computer, causes the computer to perform the methods described in the embodiments of the present application.

Based on the above embodiments, the present application further provides a chip, where the chip is configured to read a computer program stored in a memory, and implement the methods described in the embodiments of the present application.

Based on the above embodiments, the present application provides a chip system including a processor for supporting a computer device to implement the methods described in the embodiments of the present application. In one possible design, the chip system further includes a memory for storing programs and data necessary for the computer device. The chip system can be composed of chips, and can also comprise chips and other discrete devices. It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to cover such modifications and variations.

Claims

1. A channel resource selection system, wherein the system is applied to a heterogeneous network, the heterogeneous network comprising a plurality of networks, each network comprising a plurality of network nodes; in each networking, the cooperative node is any network node in the networking; the cooperative master node is any network node in the heterogeneous network; wherein,

the cooperative master node is configured to select a target channel resource for a first network node in a first network group according to channel information from at least one network node, where the first network group is any one of the multiple networks, and the first network node is any one of the first network nodes; and indicating the target channel resources to the first network node;

The first network node is configured to obtain the target channel resource indicated by the cooperative master node, and perform data transmission on the target channel resource; wherein the obtaining the target channel resource indicated by the cooperative master node includes: acquiring the target channel resource directly indicated by the cooperative master node or acquiring the target channel resource indirectly indicated by a first cooperative node; the first cooperative node is a cooperative node in the first group of networks.

2. A channel resource selection system, wherein the system is applied to a heterogeneous network, the heterogeneous network comprising a plurality of networks, each network comprising a plurality of network nodes; in each networking, the cooperative node is any network node in the networking; the cooperative master node is any network node in the heterogeneous network; wherein,

the cooperative master node is configured to select a target channel resource set for a first network according to channel information from at least one network node, where the first network is any one of the multiple networks; and indicating the target channel resource set to a first cooperative node, wherein the first cooperative node is a cooperative node in the first group network;

The first cooperative node is configured to obtain the target channel resource set indicated by the cooperative master node; selecting target channel resources for a first network node according to the target channel resource set, wherein the first network node is any network node in the first group of networks; and indicating the target channel resources to the first network node;

the first network node is configured to obtain the target channel resource indicated by the first cooperative node, and perform data transmission on the target channel resource.

3. The system according to claim 1 or 2, wherein the cooperating master node, prior to selecting the target channel resources for the first network node in the first group of networks or selecting the target set of channel resources for the first group of networks, is further configured to:

receiving request information from a first network node for applying for a channel;

wherein, the request information contains the identification information of the target channel resource; or, the request information includes service information, where the service information is used to select a target channel resource for the first network node.

4. The system of claim 3, wherein the traffic information comprises at least one of: service type, service requirement.

5. The system according to any of claims 1 to 4, wherein the cooperating master node, prior to selecting the target channel resources for the first network node in the first group or the target set of channel resources for the first group, is further configured to:

receiving channel information directly reported by at least one network node; or,

and receiving channel information which is indirectly reported by at least one cooperative node and is collected by at least one network node in the networking of the cooperative node.

6. The system according to claim 5, wherein the cooperative master node is configured to, when receiving channel information collected from at least one network node, specifically:

receiving channel information acquired by at least one network node through an auxiliary link used for transmitting control plane information between the network node and each network node;

the cooperative master node is configured to receive channel information collected from at least one network node in a network where the cooperative master node is located, where the channel information is reported by at least one cooperative node, and is specifically configured to:

and receiving channel information which is reported by the at least one cooperative node and is collected by the at least one network node in the networking of the at least one cooperative node through an auxiliary link used for transmitting control plane information between the at least one cooperative node and the at least one cooperative node.

7. The system of claim 5 or 6, wherein the cooperating master node is further configured to:

and updating a channel information table of the heterogeneous network according to channel information from at least one network node, wherein the channel information table is used for indicating a selectable channel resource set of the heterogeneous network.

8. The system of claim 7, wherein the cooperative host node is further configured to:

transmitting the channel information table to a second network node in the heterogeneous network;

if the second network node is a cooperative node, the second network node is configured to select a target channel resource for a third network node according to the channel information table, where the third network node is any network node in a second group of networks where the second network node is located;

and if the second network node is a non-cooperative node, the second network node is further configured to select a target channel resource according to the channel information table, and send request information for applying for the target channel resource to the cooperative master node or a second cooperative node in the second group of networks.

9. The system according to any one of claims 1 to 7, wherein the channel information includes at least one of the following information:

The strength of the received signal of the channel indicates the RSSI, the duty cycle of the channel, the channel band, the channel bandwidth, the type of traffic on the self-used channel.

10. The system of claim 1, wherein the cooperating master node, prior to selecting the target channel resources for the first network node in the first group of networks, is further configured to:

acquiring a main link type reported by at least one network node and used for transmitting user plane data by the network node;

the cooperative master node is configured to, when selecting a target channel resource for a first network node in a first network group, specifically: and selecting target channel resources for the first network node from the selectable channel resources corresponding to the main link type according to the main link type adopted by the first network node.

11. The system of claim 2, wherein the cooperating master node, prior to selecting the target set of channel resources for the first network, is further configured to:

the cooperative master node is configured to, when selecting a target channel resource set for the first network, specifically: and selecting a target channel resource set for the first networking from the selectable channel resources corresponding to the main link type according to the main link type of the network node contained in the first networking.

12. The system according to any one of claims 1 to 11, wherein,

the first network node is further configured to send a change instruction to the cooperative master node if a preset change event is monitored;

wherein the change indication is used by the cooperative master node to reselect a target channel resource for the first network node or to reselect a target channel resource set for the first network; the preset change event includes, but is not limited to, at least one of the following events: and changing service information and channel information.

13. A method for selecting channel resources, comprising:

the cooperative master node selects target channel resources for a first network node in a first group of networks according to channel information from at least one network node; the first network is any one of a plurality of networks contained in a heterogeneous network, and the first network node is any network node in the first network;

the cooperating master node indicates the target channel resources to the first network node.

14. A method for selecting channel resources, comprising:

the cooperative master node selects a target channel resource set for a first network according to channel information from at least one network node, wherein the first network is any one of a plurality of networks contained in a heterogeneous network;

The cooperative master node indicates the target channel resource set to a first cooperative node, wherein the first cooperative node is a cooperative node in the first group network.

15. The method according to claim 13 or 14, wherein before selecting the target channel resources for the first network node in the first group of networks or selecting the target set of channel resources for the first group of networks, the method further comprises:

the cooperative master node receives request information from a first network node for applying a channel;

16. The method according to any one of claims 13-15, further comprising:

and the cooperative master node updates a channel information table of the heterogeneous network according to channel information from at least one network node, wherein the channel information table is used for indicating a selectable channel resource set of the heterogeneous network.

17. A method for selecting channel resources, comprising:

the first network node obtains the target channel resource indicated by the cooperative master node in the heterogeneous network;

The first network node performs data transmission on the target channel resource;

wherein the obtaining the target channel resource indicated by the cooperative master node includes: acquiring the target channel resource directly indicated by the cooperative master node or acquiring the target channel resource indirectly indicated by a first cooperative node; the first cooperative node is a cooperative node in a first network, and the first network is a network where the first network node is located.

18. A method for selecting channel resources, comprising:

the first network node obtains the target channel resource indicated by the first cooperative node; the first cooperative node is a cooperative node in a first network, and the first network is a network where the first network node is located;

and carrying out data transmission on the target channel resources.

19. The method according to claim 17 or 18, wherein before the first network node acquires the target channel resources, the method further comprises:

the first network node sends request information for applying for a channel;

20. The method according to any one of claims 17-19, further comprising:

if a preset change event is monitored, the first network node sends a change instruction to the cooperative master node;

21. A method for selecting channel resources, comprising:

the first cooperative node acquires the target channel resource set indicated by the cooperative master node in the heterogeneous network; the first cooperative node is a cooperative node in a first network, and the first network is a network where the first cooperative node is located;

the first cooperative node selects target channel resources for a first network node according to the target channel resource set; the first network node is any network node in the first group of networks;

the first cooperating node indicates the target channel resource to the first network node.

22. An electronic device comprising at least one processor coupled to at least one memory, the at least one processor to read a computer program stored by the at least one memory to perform the method of any one of claims 13-16, or to perform the method of any one of claims 17-20, or to perform the method of claim 21.

23. A computer readable storage medium having instructions stored therein which, when run on a computer, cause the computer to perform the method of any one of claims 13-16, or perform the method of any one of claims 17-20, or perform the method of claim 21.

24. A computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of any one of claims 13-16, or perform the method of any one of claims 17-20, or perform the method of claim 21.