Deployment method and device of emergency communication network, communication system and storage medium

Abstract

The invention discloses an emergency communication network deployment method and device, a communication system and a storage medium. The method comprises the following steps: deploying access network functions of a plurality of communication networks based on a co-station deployment mode on a base station mounted on an unmanned aerial vehicle; wherein the base station is connected with a switch based on a satellite backhaul link and / or a wireless backhaul link, the switch is connected with core network equipment of each communication network in the plurality of communication networks, and the plurality of communication networks comprise cellular public networks of a plurality of operators. Thus, access network functions of cellular public networks of a plurality of operators can be deployed on the base station of the unmanned aerial vehicle in a co-station deployment mode, the requirement for an unmanned aerial vehicle flight platform in an emergency communication scene is effectively reduced, the number of unmanned aerial vehicles providing multi-network signal coverage can be increased, the use cost is reduced, and the unmanned aerial vehicle emergency communication method and device can be applied to multiple unmanned aerial vehicles. Network deployment in an emergency communication scene is facilitated, and the communication effect is timely guaranteed, so that the emergency rescue efficiency is improved.

Description

Technical Field

[0001] The present application relates to the field of emergency communications, and in particular to a deployment method, equipment, communication system and storage medium for an emergency communication network. Background Art

[0002] When encountering a large-scale natural disaster, the communication infrastructure may be damaged and unable to provide normal communication services. In order to solve the problem of network interruption in the three-break scenario (circuit break, power break, network break), the relevant technology can use drones to carry public network base stations, and use satellite communication or other signal links as backhaul links to access the operator's core network, thereby providing temporary network signal coverage, which can provide communication services to the people and / or rescue personnel in the disaster area in a timely manner.

[0003] However, in emergency communication scenarios, in order to achieve full network signal coverage for operators, drones need to carry multiple base stations, which places high demands on the drone platform load, available space, power supply, etc. The load weight and installation space of small and medium-sized drones are often not enough, and large long-flight fixed-wing drones need to be used, which results in high cost and difficulty in widespread deployment, affecting network deployment and communication effects in emergency communication scenarios. Summary of the invention

[0004] In view of this, the embodiments of the present application provide a deployment method, device, communication system and storage medium of an emergency communication network, aiming to effectively improve the communication effect in emergency communication scenarios.

[0005] The technical solution of the embodiment of the present application is implemented as follows:

[0006] In a first aspect, an embodiment of the present application provides a method for deploying an emergency communication network, including:

[0007] On the base station mounted on the drone, the access network functions of multiple communication networks are deployed based on the co-site deployment method;

[0008] Among them, the base station is connected to the switch based on a satellite backhaul link and / or a wireless backhaul link, and the switch is connected to the core network equipment of each communication network in the multiple communication networks, and the multiple communication networks include cellular public networks of multiple operators.

[0009] In the above solution, the access network functions of multiple communication networks are deployed based on co-site deployment, including:

[0010] Deploy access network functions of multiple communication networks by using single-carrier co-site deployment; or,

[0011] The access network functions of multiple communication networks are deployed by adopting multi-carrier co-site deployment.

[0012] In the above scheme, the access network functions of multiple communication networks are deployed in a single-carrier co-site deployment manner, including:

[0013] Selecting a network standard based on the terminal type that needs to be compatible, and determining a target frequency band shared under the network standard;

[0014] Performing network capacity planning on the target frequency band to obtain wireless resource block configuration information of each of the communication networks;

[0015] Configuring Tracking Area Code (TAC) information shared by the multiple communication networks;

[0016] Based on the TAC information and the wireless resource block configuration information of each of the communication networks, the cell parameters of each of the communication networks are configured.

[0017] In the above scheme, the network capacity planning is performed on the target frequency band to obtain the wireless resource block configuration information of each communication network, including:

[0018] Determining the capacity proportion of the network capacity of each of the communication networks based on the historical number of users and / or the planned number of users of each of the communication networks corresponding to the coverage area of ​​the base station;

[0019] The target frequency band is divided based on the capacity ratio to obtain wireless resource block configuration information of each communication network.

[0020] In the above solution, the multiple communication networks further include: a cellular private network, and the method further includes:

[0021] The core network functions of the cellular private network are deployed on the base station.

[0022] In the above scheme, the access network functions of multiple communication networks are deployed in a multi-carrier co-site deployment manner, including:

[0023] Determining the number of carriers based on at least one of the payload capacity of the UAV, the communication capability of the base station, the communication capacity requirement, and the backhaul link bandwidth;

[0024] Allocating carriers to the multiple communication networks based on the number of carriers, and determining a network standard and a target frequency band for each carrier;

[0025] Performing network capacity planning on the target frequency band of each carrier to obtain wireless resource block configuration information of the communication network carried;

[0026] Configure the tracking area code (TAC) information of each carrier;

[0027] For each carrier, the cell parameters of each communication network are configured based on the TAC information and the wireless resource block configuration information of the communication network carried.

[0028] In the above scheme, the network capacity planning is performed on the target frequency band of each carrier to obtain the wireless resource block configuration information of the communication network carried, including:

[0029] For the target frequency band of each carrier, based on the number of historical users and / or the number of planned users of the communication network carried corresponding to the coverage area of ​​the base station, determine the capacity proportion of the network capacity of the communication network carried;

[0030] The target frequency band is divided based on the capacity ratio to obtain wireless resource block configuration information of the communication network carried.

[0031] In the above solution, the multiple communication networks further include: a cellular private network, and the method further includes:

[0032] The core network functions of the cellular private network are deployed on the base station.

[0033] In a second aspect, an embodiment of the present application provides a communication system, including: a drone, on which is mounted a base station deployed by the method described in the first aspect of the embodiment of the present application.

[0034] In a third aspect, an embodiment of the present application provides an electronic device, comprising: a processor and a memory for storing a computer program that can be run on the processor, wherein the processor, when used to run the computer program, executes the steps of the method described in the first aspect of the embodiment of the present application.

[0035] In a fourth aspect, an embodiment of the present application provides a computer storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the method described in the first aspect of the embodiment of the present application are implemented.

[0036] The technical solution provided in the embodiment of the present application is to deploy the access network functions of multiple communication networks on the base station mounted on the drone based on the co-site deployment method; wherein the base station is connected to the switch based on the satellite backhaul link and / or the wireless backhaul link, and the switch is connected to the core network equipment of each communication network in the multiple communication networks, and the multiple communication networks include the cellular public networks of multiple operators. In this way, the access network functions of the cellular public networks of multiple operators can be deployed on the base station of the drone through the co-site deployment method, which effectively reduces the requirements for the drone flight platform in the emergency communication scenario, thereby increasing the models of drones that provide multi-network signal coverage, reducing the cost of use, and facilitating network deployment and timely guarantee of communication effects in emergency communication scenarios, thereby improving the efficiency of emergency rescue. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 A schematic diagram of a process for deploying an emergency communication network according to an embodiment of the present application;

[0038] Figure 2 This is a schematic diagram of the networking structure in which multiple operator networks and cellular private networks are co-deployed on a base station mounted on a drone in an application example of this application;

[0039] Figure 3 A schematic diagram of a process for deploying an application communication network in an application embodiment of the present application;

[0040] Figure 4 This is a schematic diagram of frequency allocation of 4G networks of three operators in the B3 frequency band in an application example of this application;

[0041] Figure 5 A schematic diagram of a flow chart of a method for deploying an application communication network in another application embodiment of the present application;

[0042] Figure 6 This is a schematic diagram of spectrum allocation for operators' LTE B5 and B8 bands in an application example of this application;

[0043] Figure 7 This is a schematic diagram of spectrum allocation for operators B3 and N28 in an application example of this application;

[0044] Figure 8 A schematic diagram of the structure of an electronic device according to an embodiment of the present application. DETAILED DESCRIPTION

[0045] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0047] The present application embodiment provides a method for deploying an emergency communication network, such as Figure 1 As shown, the method includes:

[0048] Step 101, on a base station mounted on a drone, access network functions of multiple communication networks are deployed based on a co-site deployment method.

[0049] It should be noted that in the embodiment of the present application, the base station mounted on the drone is also connected to the ground switch based on the satellite backhaul link and / or the wireless backhaul link, and the switch is connected to the core network equipment of each communication network in the multiple communication networks, and the multiple communication networks include the cellular public networks of multiple operators.

[0050] Exemplarily, the platform device used to configure the base station can use MOCN or RANSHARE technology to co-deploy the access network functions of multiple communication networks on the same base station. Among them, MOCN (Multi-Operator Core Network) technology refers to two or more core networks sharing the same radio access network (RAN) and sharing frequencies, and each core network remains independent; RANSHARE technology refers to each operator using its own dedicated wireless frequency to share the radio access network (RAN), that is, the operator can independently perform cell-level control.

[0051] It should be pointed out that MOCN or RANSHARE technology is a network sharing technology generated for the limited air interface spectrum resources. However, in the base station scenario of drones, the spectrum is not limited, the air interface is not limited, and the backhaul link, continuous coverage, transmission power and equipment volume weight are more limited. The embodiment of the present application cleverly uses MOCN or RANSHARE technology to implement the access network function of the cellular public network of multiple operators on the base station mounted on the drone, share air interface resources and backhaul resources, and can effectively reduce the requirements for drone flight platforms in emergency communication scenarios while meeting the needs of network signal coverage of users of multiple operators, thereby increasing the models of drones that provide multi-network signal coverage, reducing the cost of use, and facilitating network deployment and timely guarantee of communication effects in emergency communication scenarios, thereby improving the efficiency of emergency rescue.

[0052] It should be noted that in emergency rescue scenarios, there are significant differences between drone aerial base stations and ground base stations, for example: limited backhaul links, different ground continuous coverage areas and signal propagation models, and existing technologies only support single operator network deployment or can only achieve multi-operator network deployment by connecting multiple operator base stations. In order to achieve full network signal coverage of operators, drones are required to carry base stations of multiple different operators to form ground signal coverage. At this time, multiple sets of antennas need to be installed on the drone, which requires a large amount of space and is difficult to ensure consistency of coverage. In the embodiment of the present application, the co-station deployment method is adopted to reduce the complexity of antenna installation and deployment on drones and effectively ensure the consistency of signal coverage of multiple networks.

[0053] It can be understood that the satellite backhaul link and / or wireless backhaul link can be configured with VLAN (Virtual Local Area Network), and each communication network can access the ground switch based on the corresponding VLAN, and access the corresponding core network equipment through the ground transmission network to achieve co-site deployment of multiple communication networks.

[0054] Exemplarily, the method of deploying access network functions of multiple communication networks based on co-site deployment includes:

[0055] Deploy access network functions of multiple communication networks by using single-carrier co-site deployment; or,

[0056] The access network functions of multiple communication networks are deployed by adopting multi-carrier co-site deployment.

[0057] It can be understood that the embodiments of the present application can use a single carrier to deploy multiple communication networks or multiple carriers to deploy multiple communication networks, so as to meet the flexibility requirements of base station deployment on drones, and then be compatible with the emergency deployment requirements of various models of drones, which is conducive to ensuring the reliability of emergency rescue.

[0058] Exemplarily, the deployment of access network functions of multiple communication networks in a single-carrier co-site deployment manner includes:

[0059] Selecting a network standard based on the terminal type that needs to be compatible, and determining a target frequency band shared under the network standard;

[0060] Performing network capacity planning on the target frequency band to obtain wireless resource block configuration information of each of the communication networks;

[0061] configuring TAC information shared by the plurality of communication networks;

[0062] Based on the TAC information and the wireless resource block configuration information of each of the communication networks, the cell parameters of each of the communication networks are configured.

[0063] In practical applications, if the load weight, power supply, and installation space of the drone are difficult to meet the multi-carrier deployment conditions, a single-carrier co-site deployment method can be adopted. For example, whether to adopt a single-carrier deployment method can be determined based on the model of the drone.

[0064] Here, in order to be compatible with as many terminal types as possible, the network standard may select the network standard that is most widely supported by the terminal, for example, deploying the LTE (Long Term Evolution) network standard.

[0065] For example, in order to achieve single-carrier multi-operator network sharing, in theory, the shared target frequency band can be arbitrarily selected from the existing network deployment spectrum under each operator's specific RAT (radio access technology), where the existing network deployment spectrum refers to the spectrum that has been deployed in the actual application of the operator. Considering that there are significant differences between the air-to-ground propagation model and the ground propagation model in the drone emergency communication scenario, in order to achieve on-demand coverage of the target area, it is necessary to make decisions based on the size of the target area and the geographical environment and select the appropriate frequency band.

[0066] For example, in coverage priority scenarios, try to select spectrum with lower frequency bands to deploy carriers. In capacity priority scenarios, try to select frequency bands with larger bandwidths. For the same bandwidth, select spectrum with lower frequency bands. Generally speaking, in emergency scenarios, a larger coverage area has a higher demand. By default, a lower frequency band can be selected to achieve a larger coverage area.

[0067] Exemplarily, performing network capacity planning on the target frequency band to obtain radio resource block configuration information of each of the communication networks includes:

[0068] Determining the capacity proportion of the network capacity of each of the communication networks based on the historical number of users and / or the planned number of users of each of the communication networks corresponding to the coverage area of ​​the base station;

[0069] The target frequency band is divided based on the capacity ratio to obtain wireless resource block configuration information of each communication network.

[0070] In one application example, prior information before the network interrupts service can be obtained, for example, traffic statistics of each operator can be obtained, and then the historical number of users of each communication network in the target coverage area can be determined, and wireless resources can be allocated based on the proportion of the historical number of users of each communication network to obtain the wireless resource block configuration information of each communication network. In this way, the actual capacity requirements of users of each operator in emergency rescue scenarios can be better met, which is conducive to effectively ensuring the communication reliability in emergency rescue scenarios.

[0071] In other application examples, multiple communication networks may also include cellular private networks, and the wireless resource block resources of the carrier may be divided based on the planned number of users in the cellular private networks, thereby effectively ensuring the cellular-specific communication capacity requirements.

[0072] For example, a common TAC can be configured for multiple communication networks to implement system message tracking area information settings. Because ground base stations are out of service in emergency rescue scenarios, the number of cells in the planned TAC area is small, and the TAC of multiple operator networks is different from the TAC of other areas of the existing network as much as possible, and multiple networks share the same TAC.

[0073] It is understandable that the platform device can configure the cell parameters of each of the communication networks based on the TAC information and the wireless resource block configuration information of each of the communication networks. For example, the cell parameters include: information indicating the division of wireless resources, PLMN ID (Public Land Mobile Network ID) and TAC location area. The divided VLAN ID accesses different network core networks through satellite links or other dedicated wireless backhaul links, and single-carrier support for public network multi-network signal coverage can be achieved. The PLMN ID list will be broadcast in the cell system message, and the terminal selects different network access according to its own network.

[0074] It should be pointed out that in the relevant technologies, considering that rescue personnel use the networks of different operators, their service priority is difficult to guarantee. Traditional technologies generally ensure the priority of rescue commanders by configuring whitelists, but management is troublesome. In addition, when local rescue personnel communicate with each other, precious satellite communication resources will be occupied. If additional cellular private network signal coverage is required, it is necessary to carry an additional private network base station on the drone, which puts higher requirements on the installation and deployment of the base station and the drone.

[0075] Based on this, the multiple communication networks in the embodiment of the present application may also include: a cellular private network. In this way, the co-location of the cellular public network and the cellular private network can be realized, and then the isolation of the public network and the private network in the application rescue scenario can be realized, and the QoS (quality of service) of the private network users is guaranteed not to be impacted by the public network users. Among them, the cellular private network can be used for communication transmission of key command and control tasks of emergency rescue.

[0076] It should be noted that the cellular-specific core network functions can be deployed in the ground core network equipment. For example, the base station on the drone is connected to the ground switch through a satellite backhaul link or a wireless backhaul link, and the cellular-specific core network equipment is connected through the switch.

[0077] Exemplarily, the method also includes: deploying the core network function of the cellular private network on the base station.

[0078] It should be noted that the integrated deployment of core network functions on the base station mounted on the drone can effectively reduce the backhaul delay and bandwidth requirements, allowing rescue personnel to exchange data locally without occupying satellite communication resources, thereby providing more satellite communication resources to public network users, thereby ensuring the reliability of communications in emergency rescue scenarios.

[0079] Exemplarily, the deployment of access network functions of multiple communication networks in a multi-carrier co-site deployment manner includes:

[0080] Determining the number of carriers based on at least one of the payload capacity of the UAV, the communication capability of the base station, the communication capacity requirement, and the backhaul link bandwidth;

[0081] Allocating carriers to the multiple communication networks based on the number of carriers, and determining a network standard and a target frequency band for each carrier;

[0082] Performing network capacity planning on the target frequency band of each carrier to obtain wireless resource block configuration information of the communication network carried;

[0083] Configure TAC information for each carrier;

[0084] For each carrier, the cell parameters of each communication network are configured based on the TAC information and the wireless resource block configuration information of the communication network carried.

[0085] In practical applications, the number of carriers is determined by the communication capability of the airborne base station, the payload capacity of the drone, the communication capacity requirements, and at least one of the backhaul link bandwidth. The communication capability of the base station includes the capabilities of the baseband unit (BBU) and the radio frequency unit of the base station. The radio frequency unit can be an RRU (Remote Radio Unit) or an AAU (Active Antenna Unit).

[0086] For example, for small and medium-sized drones, especially drones with a payload weight of less than 100kg, it is usually impossible to deploy multiple carriers. For medium and large drones with a payload weight of more than 100kg, multiple carriers can be deployed, and the constraints of power consumption and equipment installation must also be considered. In the multi-carrier deployment scenario, the number of carriers supported by a single base station device is usually large, generally greater than three carriers. At this time, the number of carriers is limited by the backhaul link bandwidth. The number of carriers can be determined based on the communication capacity requirements and the backhaul link bandwidth while meeting the drone payload weight, power supply and installation constraints.

[0087] Exemplarily, after the number of carriers is determined, the frequency band used by each carrier needs to be selected based on the spectrum allocation information and network standard of the operator carried by the carrier. The selection of network standards of each operator can refer to the selection method of the aforementioned single carrier, for example, select the standard that is most widely supported by the user's mobile phone, such as currently trying to select the LTE standard. After the network standard and carrier operator of the carrier configuration are determined, the target frequency band of each carrier can be selected under the spectrum allocated by the operator for the corresponding network standard.

[0088] Exemplarily, performing network capacity planning on the target frequency band of each carrier to obtain radio resource block configuration information of the communication network carried includes:

[0089] For the target frequency band of each carrier, based on the number of historical users and / or the number of planned users of the communication network carried corresponding to the coverage area of ​​the base station, determine the capacity proportion of the network capacity of the communication network carried;

[0090] The target frequency band is divided based on the capacity ratio to obtain wireless resource block configuration information of the communication network carried.

[0091] It is understandable that different carriers can reasonably allocate network resources according to the communication networks they carry, which can better meet the actual capacity needs of users of each operator in emergency rescue scenarios, and help effectively ensure the communication reliability in emergency rescue scenarios.

[0092] For example, the TAC of each carrier can be configured on a carrier basis. For example, if one carrier broadcasts the PLMN of operator A and operator B, then operator A and operator B negotiate a common TAC, and another carrier broadcasts the PLMN of operator C and operator D, then operator C and operator D can jointly negotiate a TAC. If the cellular private network and the public network operator share a carrier, the operator TAC is reused; if the private network uses a single carrier, then any non-conflicting TAC can be planned.

[0093] It is understandable that for each carrier, the platform device can configure the cell parameters of each communication network based on the TAC information and the wireless resource block configuration information of the carried communication network. For example, the cell parameters include: information indicating the division of wireless resources, PLMN ID and TAC location area. The divided VLAN ID accesses different network core networks through satellite links or other dedicated wireless backhaul links, which can realize multi-carrier support for public network multi-network signal coverage. The PLMN ID list will be broadcast in the cell system message, and the terminal selects different network access according to its own network.

[0094] Exemplarily, the multiple communication networks deployed by multi-carrier co-site can also include: cellular private network. In this way, the co-site deployment of cellular public network and cellular private network can be realized, and then the isolation of public network and private network in the application rescue scenario can be realized, and the QoS of private network users is guaranteed not to be impacted by public network users. Among them, the cellular private network can be used for communication transmission of key command and control tasks of emergency rescue.

[0095] Exemplarily, the method further includes: deploying the core network function of the cellular private network on the base station.

[0096] It should be noted that the integrated deployment of core network functions on the base station mounted on the drone can effectively reduce the backhaul delay and bandwidth requirements, allowing rescue personnel to exchange data locally without occupying satellite communication resources, thereby providing more satellite communication resources to public network users, thereby ensuring the reliability of communications in emergency rescue scenarios.

[0097] In an application example, multiple operator networks and cellular private networks can be co-deployed on the base station mounted on the drone. The network structure is as follows: Figure 2 Among them, the base station mounted on the drone can be called a full-network base station. The base station is connected to the satellite ground station through a satellite backhaul link, and is connected to the ground wireless backhaul node through a dedicated wireless loop link. The satellite ground station and the ground wireless backhaul node are connected to the ground switch, which is connected to different operator core networks (such as Figure 2 The core network of operators A to D as shown) and the private network core network.

[0098] It is understandable that satellite backhaul links and wireless backhaul links can be configured with VLANs, and each operator's cellular public network and cellular private network can access ground switches based on the corresponding VLANs, and access the corresponding core network equipment through the ground transmission network to achieve co-site deployment of multiple communication networks.

[0099] The present application is further described in detail below in conjunction with application examples.

[0100] Application Example 1

[0101] This application embodiment takes a single-station multi-network sharing a single carrier as an example for exemplary description. Figure 3 , the deployment method of the emergency communication network includes the following steps:

[0102] Step 301: spectrum selection.

[0103] In emergency rescue scenarios, in order to achieve coverage of ground public network users, the spectrum needs to use public network authorized spectrum. Since the existing communication network in the target area has been disconnected, there is no spectrum interference problem, and the air interface spectrum resources are relatively abundant. The emergency communication system is mainly limited by the backhaul link, the payload weight of the UAV flight platform, the installation volume, and the power supply energy consumption. To achieve spectrum selection for emergency network deployment, it is necessary to complete the network standard and the corresponding frequency band selection.

[0104] Here, in order to be compatible with more terminal types, the network standard can choose the network standard that is most widely supported by mobile phones. For example, the emergency communication system can deploy the LTE network standard.

[0105] For example, to achieve single-carrier multi-operator network sharing, in theory, you can choose any spectrum from the existing network deployment spectrum under each operator's specific RAT. However, the air-to-ground propagation model and the ground propagation model in the drone emergency communication scenario are quite different. In order to achieve on-demand coverage of the target area, it is necessary to make decisions based on the size of the target area and the geographical environment and select the appropriate frequency band.

[0106] In coverage priority scenarios, try to select spectrum with lower frequency bands to deploy carriers. In capacity priority scenarios, try to select frequency bands with larger bandwidths. For the same bandwidth, select spectrum with lower frequency bands. Generally speaking, in emergency scenarios, a larger coverage area has a higher demand, so by default, a lower frequency band is selected to achieve a larger coverage area.

[0107] Figure 4 The frequency allocation diagram of the three operators' 4G networks in the B3 frequency band is shown. All of them are in the 1.8G frequency band. You can choose any 20MHz bandwidth to deploy an LTE cell.

[0108] For example, the spectrum selection for 5G NR can be selected based on the operator's spectrum allocation information, such as Sub6G bands such as N28, N41, N78, N79 and millimeter wave N257 and N258 bands. In coverage priority scenarios, N28 band deployment is preferred. For capacity priority scenarios, N41 frequency can be preferred to deploy NR cells, and so on.

[0109] Optionally, similar methods may be used to select frequency bands for subsequent evolutions such as 6G.

[0110] Step 302: capacity planning of each network.

[0111] Step 302 mainly solves the problem of wireless resource allocation for each network on the carrier. Based on the prior information before the network is disconnected, such as the traffic statistics of each operator, the number of users in the target coverage area can be obtained, and the wireless RB (resource block) resources of the carrier are allocated proportionally according to the number of users. For scenarios where cellular private networks need to be deployed, the RB resources of the carrier are divided according to the planned number of users or capacity requirements. Through the planning of different network capacities, the allocation and configuration of wireless resources are achieved in proportion. Table 1 illustrates an example of wireless resource allocation based on multi-network capacity requirements.

[0112] Table 1

[0113] network Operator A Operator B Operator C Operator D Cellular Private Network Number of users 150 50 150 100 50 RB allocation number 30 10 30 20 10

[0114] It can be seen from Table 1 above that each communication network can allocate wireless resources based on the proportion of the number of users, which can better meet the actual capacity requirements of each operator's users and private network users in emergency rescue scenarios.

[0115] It should be noted that according to different capacity requirements, network resources can be allocated on demand to achieve network deployment. If the capacity requirement of a network is 0, it means that there is no need to deploy this network. In this way, network deployment can be optimized based on historical user data to achieve the optimal design of network performance.

[0116] It should be pointed out that an important difference between the emergency communication system of the embodiment of the present application and the ground cellular system is that the backhaul link of the drone base station is relatively limited. The backhaul link of the emergency communication system usually uses a satellite link, mesh or other dedicated link backhaul. After the air interface resource allocation is divided according to the capacity of each network, the backhaul link bandwidth needs to be divided as needed and mapped to the transmission link according to the backhaul link characteristics and strategies.

[0117] Step 303: TAC planning.

[0118] In order to achieve the deployment of public and private networks with shared carriers, each network needs to negotiate a common dedicated TAC, which does not conflict with the existing network TAC planning, so as to realize the setting of system message tracking area information. Due to the ground base station outage in emergency scenarios, the number of cells in the planned TAC area is small, and the TAC of multiple operator networks is different from the TAC of other areas of the existing network as much as possible, and multiple networks share the same TAC.

[0119] Step 304: network deployment.

[0120] After completing the above steps 301 to 303, configure the cell parameters (including wireless resource division, PLMN ID, TAC location area) on the base station, divide the VLAN ID, and access different network core networks through the satellite link or other dedicated wireless backhaul link, so that a single carrier can support public and private network multi-network signal coverage. The PLMN ID list will be broadcast in the cell system message, and the terminal will select different network access according to its own network.

[0121] Optionally, for cellular public networks, core network elements, as well as MEC (Mobile Edge Computing) and service platforms can be deployed at the base stations of drones according to business needs; for cellular private networks, the core network (including application platforms) can be deployed in an integrated manner with base stations to reduce backhaul latency and bandwidth requirements, while improving network deployment flexibility.

[0122] Application Example 2

[0123] In order to reduce terminal compatibility requirements or increase network capacity, multiple carriers can be deployed at a single site to carry multiple operator networks and cellular private networks. For example, to deploy four operator networks of operator A, operator B, operator C, and operator D and a cellular private network, two, three, or more carriers can be deployed at a single site. Operator A and operator B share one carrier, operator C and operator D share one carrier, and the private network has one carrier exclusively or shares one carrier with other operators.

[0124] This application embodiment takes a single station and multiple networks sharing multiple carriers as an example for exemplary description. Figure 5 , the deployment method of the emergency communication network includes the following steps:

[0125] Step 501, carrier quantity selection.

[0126] Here, the choice of the number of carriers depends on the capabilities of the baseband unit and radio frequency unit of the aerial base station, the payload capacity of the drone, the communication capacity requirements, and the backhaul link bandwidth.

[0127] For example, the typical number of carriers is selected as 2 carriers or 3 carriers, and the multi-network carrier sharing configuration table is shown in Table 2:

[0128] Table 2

[0129]

[0130] It should be noted that for small and medium-sized drones, especially those with a payload weight of less than 100kg, multi-carriers cannot usually be deployed. For medium and large drones with a payload weight of more than 100kg, multi-carriers can be deployed, and the constraints of power consumption and equipment installation must also be considered. In the multi-carrier deployment scenario, the number of carriers supported by a single base station device is usually large, generally greater than three carriers. At this time, the number of carriers is limited by the backhaul link bandwidth. The number of carriers can be determined based on the communication capacity requirements and the backhaul link bandwidth while meeting the drone payload weight, power supply and installation constraints.

[0131] Step 502: spectrum selection.

[0132] After the number of carriers is determined, the frequency band used by each carrier needs to be selected based on the spectrum allocation information and network standard of the carrier. The selection of network standards for each operator can refer to the selection method of the single carrier mentioned above, for example, select the standard that is most widely supported by the user's mobile phone, such as currently trying to select the LTE standard. After the network standard and carrier operator of the carrier configuration are determined, the target frequency band of each carrier can be selected under the spectrum allocated by the operator for the corresponding network standard.

[0133] For example, if the private network spectrum and the public network share a carrier, the spectrum selection can be based on the public network; if the private network uses a single carrier, another available spectrum can be selected based on the radio frequency unit capability (without causing spectrum interference).

[0134] Figure 6 This is a typical spectrum allocation diagram for LTE B5 B8 bands of operators. If a 2-carrier solution is adopted, operators A, B and private networks are deployed in the B8 band, and operators C and D are deployed in the B5 band or the B8 band. If a 3-carrier solution is adopted, operators A and B are deployed in the B8 band, operators C and D are deployed in the B5 band, and private networks are deployed in the B8 band. If the RF unit supports multi-carrier and multi-band, private networks can also be deployed in other bands as needed.

[0135] Optionally, the spectrum selection for 5G NR can be selected based on the operator's spectrum allocation information, such as Sub6G bands such as N28, N41, N78, N79 and millimeter wave bands such as N257 and N258.

[0136] Optionally, a similar method may be used for the selection of frequency bands for subsequent evolutions such as 6G.

[0137] Optionally, multiple carriers of different standards may be deployed at a single station, such as LTE and NR carriers. Figure 7 The spectrum allocation information of operators B3 and N28 is shown. LTE carriers with a frequency of 20 MHz in the B3 band and NR carriers with a frequency of 30 MHz in the N28 band can be deployed on base stations.

[0138] Step 503: capacity planning of each carrier network.

[0139] Exemplarily, different carriers determine the allocation of network resources according to the number of operators or private network users carried. For example, for the target frequency band of each carrier, the capacity proportion of the network capacity of the carried communication network is determined based on the number of historical users and / or the number of planned users of the carried communication network corresponding to the coverage area of ​​the base station; the target frequency band is divided based on the capacity proportion to obtain the wireless resource block configuration information of the carried communication network.

[0140] Step 504, TAC planning.

[0141] For example, the TAC of each carrier can be configured on a carrier basis. For example, if one carrier broadcasts the PLMN of operator A and operator B, then operator A and operator B negotiate a common TAC, and another carrier broadcasts the PLMN of operator C and operator D, then operator C and operator D can jointly negotiate a TAC. If the cellular private network and the public network operator share a carrier, the operator TAC is reused; if the private network uses a single carrier, then any non-conflicting TAC can be planned.

[0142] Step 505: network deployment.

[0143] For multi-carrier scenarios, co-site deployment can be achieved based on hardware equipment capabilities, such as BBU creating multiple carriers, and RF and antenna equipment supporting multi-band carrier deployment. Multi-carrier deployment can provide better terminal compatibility and greater network capacity, such as operator A and operator B share one carrier, operator C and operator D share one carrier, and a private network uses one carrier.

[0144] Based on the information determined in the above steps 501 to 504, the frequency bands, capacities, TAC planning, etc. used by different carriers can be deployed. Different carrier parameters are configured according to the conditions of each operator, and the corresponding operator or private network core network is accessed through VLAN division. The planned PLMNID list will be broadcast in the system message of each cell, and the terminal selects different network access according to its own network.

[0145] Optionally, for cellular public networks, core network elements, MEC and service platforms can be deployed at the base stations of drones according to business needs. For cellular private networks, the core network (including application platforms) can be deployed in an integrated manner with base stations to reduce backhaul latency and bandwidth requirements, while improving network deployment flexibility.

[0146] It can be understood that the deployment method of the emergency communication network of this application embodiment realizes the co-site deployment of multiple operator networks by using MOCN or RANSHARE technology, reduces the requirements of the full network base station on the drone for the drone flight platform, ensures the consistency of continuous coverage of ground signals, and reduces the cost of emergency communications. In addition, when realizing the deployment of multiple operator networks in emergency scenarios, it solves the problems that ground network sharing has never faced, such as: network equipment volume and weight, power consumption, and limited backhaul links. Thirdly, by co-deploying the cellular public network and the cellular private network, the base station of the drone can provide public network and private network coverage at the same time, meet the public network communication needs of the affected people and the private network communication needs of the rescue personnel with QoS guarantee, and support the sinking of the private network core network to the drone, alleviate the crowding of the backhaul link by the private network user service and the impact of the backhaul link fluctuation on the private network service, and further improve the base station network capacity and reliability of the drone. In addition, the on-demand allocation of wireless resources of multiple communication networks based on capacity requirements can effectively ensure the communication reliability in emergency rescue scenarios, thereby improving the efficiency of emergency rescue.

[0147] Exemplarily, the present application also provides a communication system, including: a drone, on which the base station deployed by the aforementioned method of the present application is mounted. It can be understood that, if Figure 2 As shown, the base station is connected to the satellite ground station through a satellite backhaul link, and is connected to the ground wireless backhaul node through a dedicated wireless loop link. The satellite ground station and the ground wireless backhaul node are connected to the ground switch, and the switch is connected to different operator core networks (such as Figure 2 The core network of operators A to D as shown) and the private network core network.

[0148] In order to implement the method of the embodiment of the present application, the embodiment of the present application further provides an electronic device. The electronic device may be a platform device for configuring a base station. Figure 8 Only an exemplary structure of the electronic device is shown, not all structures, and it can be implemented as needed. Figure 8 Partial or complete structure shown.

[0149] like Figure 8 As shown, the electronic device 800 provided in the embodiment of the present application includes: at least one processor 801, a memory 802, a user interface 803 and at least one network interface 804. The various components in the electronic device 800 are coupled together through a bus system 805. It can be understood that the bus system 805 is used to realize the connection and communication between these components. In addition to the data bus, the bus system 805 also includes a power bus, a control bus and a status signal bus. However, for the sake of clarity, in Figure 8 Various buses are labeled as bus system 805 .

[0150] The user interface 803 may include a display, a keyboard, a mouse, a trackball, a click wheel, keys, buttons, a touch pad or a touch screen.

[0151] The memory 802 in the embodiment of the present application is used to store various types of data to support the operation of the electronic device. Examples of such data include: any computer program used to operate on the electronic device.

[0152] The deployment method of the emergency communication network disclosed in the embodiment of the present application can be applied to the processor 801, or implemented by the processor 801. The processor 801 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the deployment method of the emergency communication network can be completed by the hardware integrated logic circuit or software instructions in the processor 801. The above-mentioned processor 801 can be a general-purpose processor, a digital signal processor (DSP, Digital Signal Processor), or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The processor 801 can implement or execute the various methods, steps and logic block diagrams disclosed in the embodiment of the present application. The general-purpose processor can be a microprocessor or any conventional processor, etc. In combination with the steps of the method disclosed in the embodiment of the present application, it can be directly embodied as a hardware decoding processor to execute, or it can be executed by a combination of hardware and software modules in the decoding processor. The software module can be located in a storage medium, which is located in the memory 802. The processor 801 reads the information in the memory 802 and completes the steps of the deployment method of the emergency communication network provided in the embodiment of the present application in combination with its hardware.

[0153] In an exemplary embodiment, the electronic device may be implemented by one or more application specific integrated circuits (ASIC), DSP, programmable logic device (PLD), complex programmable logic device (CPLD), field programmable gate array (FPGA), general processor, controller, microcontroller (MCU), microprocessor, or other electronic components to execute the aforementioned method.

[0154] It can be understood that the memory 802 can be a volatile memory or a non-volatile memory, and can also include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), a magnetic random access memory (FRAM), a flash memory, a magnetic surface memory, an optical disk, or a compact disc read-only memory (CD-ROM); the magnetic surface memory can be a disk memory or a tape memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), synchronous static random access memory (SSRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct rambus random access memory (DRRAM).The memories described in the embodiments of the present application are intended to include, but are not limited to, these and any other suitable types of memories.

[0155] In an exemplary embodiment, the present application also provides a computer storage medium, which can be a computer-readable storage medium, for example, a memory 802 storing a computer program, and the computer program can be executed by a processor 801 of an electronic device to complete the steps described in the method of the present application embodiment. The computer-readable storage medium can be a memory such as a ROM, a PROM, an EPROM, an EEPROM, a Flash Memory, a magnetic surface memory, an optical disk, or a CD-ROM.

[0156] It should be noted that: "first", "second", etc. are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0157] In addition, the technical solutions described in the embodiments of the present application can be combined arbitrarily without conflict.

[0158] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A method for deploying an emergency communication network, characterized in that: include: On the base station mounted on the drone, the access network functions of multiple communication networks are deployed based on the co-site deployment method; Among them, the base station is connected to the switch based on a satellite backhaul link and / or a wireless backhaul link, and the switch is connected to the core network equipment of each communication network in the multiple communication networks, and the multiple communication networks include cellular public networks of multiple operators.

2. The method according to claim 1, characterized in that The deployment of access network functions of multiple communication networks based on co-site deployment includes: Deploy access network functions of multiple communication networks by using single-carrier co-site deployment; or, The access network functions of multiple communication networks are deployed by adopting multi-carrier co-site deployment.

3. The method according to claim 2, characterized in that The deployment of access network functions of multiple communication networks in a single-carrier co-site deployment manner includes: Selecting a network standard based on the terminal type that needs to be compatible, and determining a target frequency band shared under the network standard; Performing network capacity planning on the target frequency band to obtain wireless resource block configuration information of each of the communication networks; Configuring tracking area code TAC information shared by the multiple communication networks; Based on the TAC information and the wireless resource block configuration information of each of the communication networks, the cell parameters of each of the communication networks are configured.

4. The method according to claim 3, characterized in that The performing network capacity planning on the target frequency band to obtain the wireless resource block configuration information of each communication network includes: Determining the capacity proportion of the network capacity of each of the communication networks based on the historical number of users and / or the planned number of users of each of the communication networks corresponding to the coverage area of ​​the base station; The target frequency band is divided based on the capacity ratio to obtain wireless resource block configuration information of each communication network.

5. The method according to claim 3, characterized in that: The plurality of communication networks further include: a cellular private network, and the method further includes: The core network functions of the cellular private network are deployed on the base station.

6. The method according to claim 2, characterized in that The deployment of access network functions of multiple communication networks in a multi-carrier co-site deployment manner includes: Determining the number of carriers based on at least one of the payload capacity of the UAV, the communication capability of the base station, the communication capacity requirement, and the backhaul link bandwidth; Allocating carriers to the multiple communication networks based on the number of carriers, and determining a network standard and a target frequency band for each carrier; Performing network capacity planning on the target frequency band of each carrier to obtain wireless resource block configuration information of the communication network carried; Configure the tracking area code (TAC) information of each carrier; For each carrier, the cell parameters of each communication network are configured based on the TAC information and the wireless resource block configuration information of the communication network carried.

7. The method according to claim 6, characterized in that The performing network capacity planning on the target frequency band of each carrier to obtain the wireless resource block configuration information of the communication network carried includes: For the target frequency band of each carrier, based on the number of historical users and / or the number of planned users of the communication network carried corresponding to the coverage area of ​​the base station, determine the capacity proportion of the network capacity of the communication network carried; The target frequency band is divided based on the capacity ratio to obtain wireless resource block configuration information of the communication network carried.

8. The method according to claim 6, characterized in that The plurality of communication networks further include: a cellular private network, and the method further includes: The core network functions of the cellular private network are deployed on the base station.

9. A communication system, characterized in that: include: A drone, wherein the drone carries a base station deployed by the method according to any one of claims 1 to 8.

10. An electronic device, characterized in that: include: A processor and a memory for storing a computer program that can be executed on the processor, wherein: The processor is used to execute the steps of the method according to any one of claims 1 to 8 when running a computer program.

11. A computer storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 8 are implemented.

Images