Service communication method based on converged communication site and related device

Abstract

The invention discloses a service communication method based on a converged communication site and a related device, and relates to the field of wireless communication, a narrowband base station is pre-configured to be connected with an AP through a TCP / IP network, and the converged communication site is constructed, so that a terminal user unit supporting WLAN communication can send a terminal registration request through the associated AP; the method comprises the following steps: requesting to register to a narrowband base station connected with an AP (Access Point), and performing registration access control by the narrowband base station in response to a received terminal registration request to realize a terminal access task under a WLAN (Wireless Local Area Network); on the basis, the narrowband base station connected with the AP receives the service of the corresponding protocol type through the narrowband network or the WLAN network, and then responds to the received service to determine the receiving terminal and forward the service in sequence, so that the service communication task between the receiving terminal and the transmitting terminal is realized. The limitation of limited narrow-band private network coverage area and limited narrow-band network resources on terminal services is broken through to a certain extent.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of communication technology, in particular to a service communication method based on a converged communication site and related devices. BACKGROUND

[0002] In a Land Mobile Radio (LMR) system, a traditional terminal user unit, which can also be referred to as a narrowband intercom device, does not set a wideband module / chip and does not support a wideband LTE (Long Term Evolution) technology, so that the terminal user unit can only perform narrowband services such as voice services or data services in a dedicated narrowband LMR network. The narrowband LMR network can be a DMR (Digital Mobile Radio) network, a PDT (Police Digital Trunking) network, a TETRA (Terrestrial Trunked Radio) network, or the like.

[0003] With the development of technology, in order to implement terminal configuration tasks, a WLAN (Wireless Local Area Network) module / chip is integrated on some narrowband intercom devices to perform one-way WLAN communication to implement terminal frequency writing or upgrading, but the narrowband intercom device cannot use wideband network resources to perform service communication. SUMMARY

[0004] In view of the above problems, the present application provides a service communication method based on a converged communication site and related devices to implement communication tasks of a terminal user unit in a wideband-narrowband converged network.

[0005] The specific scheme is as follows:

[0006] The first aspect of the present application provides a service communication method based on a converged communication site, applied to a first converged communication site, wherein the first converged communication site includes a terminal user unit and a first narrowband base station, and the first narrowband base station is configured to be connected with an access point (AP) of a wireless local area network (WLAN) through a transmission control protocol / internet protocol (TCP / IP) network; the method is applied to the first narrowband base station, and the method includes:

[0007] receiving through a TCP / IP network or a narrowband air interface;

[0008] performing registration access control on the requesting terminal when receiving a terminal registration request; the terminal registration request is a WLAN message sent by the requesting terminal to request to access the first narrowband base station in a broadband manner; the requesting terminal is a terminal user unit that is not currently accessing any narrowband base station in a broadband manner;

[0009] determining a receiving terminal of the received service when receiving a narrowband service or receiving a WLAN service, and forwarding the service based on the receiving terminal; the WLAN service at least includes a WLAN service sent by a terminal user unit accessing the first narrowband base station in a broadband manner.

[0010] The second aspect of the present application provides a service communication method based on a converged communication site, applied to a first terminal user unit, and the method comprises:

[0011] In a case where the first terminal user unit currently supports WLAN communication and is not accessing any narrowband base station in a broadband manner, sending a terminal registration request to a target registration server through an associated AP; the terminal registration request is used to request registration to the target registration server, so that the target registration server performs registration access control on the first terminal user unit; the target registration server is a narrowband base station to which the first terminal user unit requests to register;

[0012] In a case where the first terminal user unit accesses the first narrowband base station in a broadband manner, in response to a service sending requirement, sending a first WLAN service carrying receiving terminal information to the first narrowband base station through an associated AP, so that the first narrowband base station determines a receiving terminal of the first WLAN service and forwards the service based on the receiving terminal; the first narrowband base station is located in a first converged communication site, and the first narrowband base station is pre-configured to be connected with a WLAN access point (AP) through a TCP / IP network;

[0013] and receiving a communication service.

[0014] The third aspect of the present application provides a narrowband base station, which belongs to a converged communication site, the converged communication site further comprising a terminal user unit, the narrowband base station being pre-configured to be connected with an access point (AP) of a wireless local area network (WLAN) through a transmission control protocol / internet protocol (TCP / IP) network; the narrowband base station comprises at least one processor and a memory connected with the processor, wherein:

[0015] the memory is used to store a computer program;

[0016] the processor is used to execute the computer program, so that the narrowband base station can implement the service communication method based on a converged communication site as described in the first aspect.

[0017] The fourth aspect of the present application provides a terminal user unit, comprising at least one processor and a memory connected with the processor, wherein:

[0018] The memory is configured to store a computer program;

[0019] The processor is configured to execute the computer program, so that the terminal user unit can implement the service communication method based on the converged communication site as described in the second aspect.

[0020] The fifth aspect of the present application provides a computer program product comprising computer readable instructions, which can enable an electronic device to implement the service communication method based on the converged communication site as described in the first aspect or implement the service communication method based on the converged communication site as described in the second aspect when the computer readable instructions are run on the electronic device.

[0021] By the above technical solution, the narrowband base station in the site is connected with the AP through the TCP / IP network to form a converged communication site, so that the terminal user unit supporting WLAN communication can perform WLAN communication with the narrowband base station connected with the AP by connecting the WLAN hotspot. Based on this, the terminal user unit supporting WLAN communication can send a terminal registration request through the associated AP to request registration to the narrowband base station connected with the AP (i.e. the registration server), so that the narrowband base station can perform registration access control in response to the terminal registration request received from the TCP / IP network to implement the terminal access task in the WLAN network. Moreover, the narrowband base station connected with the AP can receive services through the narrowband air interface and the TCP / IP network, and then determine the receiving terminal in response to the received narrowband service or WLAN service and perform service forwarding accordingly to implement the service communication task between the transmitting terminal and the receiving terminal.

[0022] The present application realizes the access of WLAN network users and the access of WLAN services by connecting the narrowband base station with the wireless access point AP. On this basis, the narrowband base station can receive and forward the narrowband services and WLAN services to implement the service communication task in the narrowband network and the WLAN network. The present application can break through the limitation of the limited coverage area of the narrowband private network and the limited terminal services of the narrowband network resources to a certain extent. In addition, the present application realizes the wide and narrow band communication by upgrading the functions of the existing equipment on the basis of the existing narrowband system resources, i.e. the present application reuses the existing narrowband system resources without the need for additional deployment of POC servers, gateways / protocol conversion adapters and other equipment without the need for additional high hardware costs. BRIEF DESCRIPTION OF DRAWINGS

[0023] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments with reference made to the accompanying drawings. The drawings are for purposes of illustration only and are not intended to be limiting in accordance with the present application. Like reference numerals have been used wherever possible throughout the drawings and the following detailed description to refer to similar objects, components, and functions. In the drawings:

[0024] Figure 1 A networking schematic diagram of a wide and narrow band fusion interworking system is shown;

[0025] Figure 2 A networking schematic diagram of a plurality of fusion communication sites is shown;

[0026] Figure 3 A flow schematic diagram of a service communication method based on a fusion communication site according to an embodiment of the present application is shown;

[0027] Figure 4 One of the flow schematic diagrams of the BS server responding to the terminal registration request is exemplified;

[0028] Figure 5 Another of the flow schematic diagrams of the BS server responding to the terminal registration request is exemplified;

[0029] Figure 6 A third of the flow schematic diagrams of the BS server responding to the terminal registration request is exemplified;

[0030] Figure 7 A networking schematic diagram of a wide and narrow band fusion communication system is exemplified;

[0031] Figure 8 Another networking schematic diagram of a wide and narrow band fusion communication system is exemplified;

[0032] Figure 9 A hardware structure schematic diagram of a service communication device provided by the present application is shown. DETAILED DESCRIPTION

[0033] The embodiments of the present application will be described hereinafter with reference to the accompanying drawings. The terms used in the embodiments of the present application are only used to explain the specific embodiments of the present application, and are not intended to limit the present application. Those of ordinary skill in the art can know that, as technology develops and new scenarios appear, the technical solutions provided by the embodiments of the present application are also applicable to similar technical problems.

[0034] The applicant has found that the construction cost of a narrow-band private network is high, and it is difficult to cover all regions, resulting in limited communication of traditional narrow-band intercom equipment; to break through the limitation of the communication intercom service of the narrow-band private network coverage, a wide-band communication system suitable for fusion with the narrow-band communication system can be configured to expand the narrow-band communication system.

[0035] In one possible solution, a POC (Push to Talk Over Cellular) system can be set up, interconnected with a narrowband system via a gateway, to provide push-to-talk (PTT) services to public network users. These public network users, also known as broadband users, refer to broadband terminals with POC app software installed on public networks, such as mobile phones or other smart broadband devices. Furthermore, public network users can access the POC server via public networks, such as 3G / 4G / 5G cellular networks or WLAN (Wireless Local Area Networks) hotspots. Based on this, the broadband terminals connected to the POC server and the POC server constitute the POC system, i.e., a broadband private network trunking system under a broadband network. The POC system interconnects with a narrowband communication system (i.e., a narrowband private network trunking system under a narrowband network) via a gateway device, enabling public network users and narrowband users to communicate and talk through the POC server, gateway device, and narrowband basic workstation, thus realizing the walkie-talkie function under a converged broadband and narrowband network.

[0036] For example, Figure 1 Taking a narrowband base station as an example, a network diagram of a broadband and narrowband converged interoperability system is shown, combined with... Figure 1 As shown, the POC server can communicate with broadband terminals equipped with POC APP software via a broadband channel, receiving or sending broadband POC intercom services; the narrowband basic workstation (i.e. Figure 1 The narrowband base station shown can communicate with narrowband intercom devices within its narrowband coverage area via a narrowband air interface, receiving or transmitting narrowband intercom services. The POC server and the narrowband base station workstation are interconnected through a gateway device, thereby enabling cross-network intercom service forwarding. In other words, a broadband-narrowband converged communication network is constructed using the narrowband base station, gateway device, and POC server, enabling the narrowband intercom devices in the narrowband digital trunking system and the broadband terminals with POC APP installed in the POC system to communicate with each other, ultimately realizing intercom communication tasks under the broadband-narrowband converged network.

[0037] However, the above scheme can only realize interworking between narrowband intercom devices and wideband terminals supporting POC function. For narrowband intercom devices, only when a wideband module / chip is integrated, hardware supports LTE, POC application software is installed or integrated, and the wideband communication range of the POC server is located, the narrowband intercom device can use the wideband network as a public network user to communicate. That is, when the above wide and narrow band interworking scheme is implemented, the narrowband intercom device needs to be greatly improved. In addition, a POC server for providing a push-to-talk service for public network users, a gateway device connecting the wide and narrow band communication systems, and the like need to be additionally deployed. Based on this, the above scheme needs to greatly modify the existing narrowband communication system, and the implementation cost is high. In addition, in the case where the narrowband communication system includes a plurality of narrowband base stations, due to the geographical location difference of the narrowband base stations, more gateway devices and the like need to be deployed to realize the connection of each narrowband base station and the wideband communication system, further increasing the implementation cost of the scheme.

[0038] To solve the above problems, the application provides a service communication method based on a converged communication site and related devices to realize a communication task in a wide and narrow band converged network.

[0039] First, the devices involved in the application are described.

[0040] The base station (BS) can refer to a high-power multi-channel two-way transceiver base station or cell site fixed in one place. The base station BS involved in the application refers to a fixed point device for a narrowband private network, which can be referred to as a narrowband base station. For example, a transit station or a relay station in a conventional transit system, a base station in a cluster system. In addition, the communication coverage area of the BS can be referred to as a "cell". The BS in each cell site can include at least one transit station or at least one base station, and each base station can include multiple transit channel machines. The narrowband intercom device can use the narrowband private network for communication when it stays in a certain narrowband base station and there is unoccupied narrowband channel resource.

[0041] The terminal user unit involved in the application is an MS (Mobile Station, MS, mobile station or terminal) in a wide and narrow band converged network. Specifically, it can be a single-mode terminal, a multi-mode terminal, a vehicle-mounted device, or a fixed station device, etc. According to the supported communication types, the terminal user unit involved in the application can include a traditional narrowband intercom device, an improved narrowband intercom device, a traditional wideband intercom device, etc. The improved narrowband intercom device supports WLAN communication and integrates a WLAN module / chip in hardware, which can also be referred to as a multi-standard terminal.

[0042] In one possible implementation, a terminal user unit supporting WLAN communication, such as a narrowband intercom device integrated with a WLAN module / chip, can be provided with a WLAN switch, which is a switch for controlling the opening or closing of the WLAN hardware. Optionally, the WLAN switch can be designed as a whole-device switch, i.e., when the terminal user unit is in a powered-on state, the WLAN switch is in an open state, supporting WLAN communication. That is, the terminal user unit supporting WLAN communication can mean that the terminal user unit is integrated with a WLAN module / chip and the WLAN switch provided thereon is in an open state.

[0043] In another possible implementation, a terminal user unit supporting WLAN communication can be provided with a WLAN switch and a WLAN service mode switch. The WLAN switch can be as described above, and the WLAN service mode switch is a switch for controlling the opening or closing of the WLAN service mode. In this case, the terminal user unit supporting WLAN communication can mean that the terminal user unit is integrated with a WLAN module / chip and the WLAN switch and the WLAN service mode switch provided thereon are both in an open state.

[0044] The specific forms of the base station and the terminal user unit are not limited in the present application. In addition, the present application describes the integration of the narrowband network and the broadband network by taking the WLAN network as an example, and the service communication scheme when the narrowband network is integrated with other types of broadband networks can be referred to the description of the present application.

[0045] The present application extends the conventional narrowband station to obtain a broadband / narrowband integrated station, i.e., an integrated communication station, which multiplexes the narrowband base station in the conventional narrowband station. The integrated communication station described in the present application is exemplarily described below.

[0046] A single integrated communication station can include a narrowband base station, which is pre-configured to be connected to an access point (AP) of a wireless local area network (WLAN) through a transmission control protocol / internet protocol (TCP / IP) network, so that the base station can receive or send WLAN messages through the connected AP and communicate with the terminal user units supporting WLAN communication within the WLAN coverage provided by the AP. To avoid confusion with the conventional narrowband base station, the narrowband base station connected to the AP is referred to as a BS server, which can also be referred to as a register server.

[0047] The single converged communication site can also include a terminal user unit, which can specifically include a terminal supporting narrowband communication and accessing the narrowband base station in the site in a narrowband manner, and / or a terminal supporting WLAN communication and accessing the narrowband base station in the site in a wideband manner. The terminal accessing the narrowband base station in the site in a narrowband manner can also be described as taking the site as a narrowband stay site (referred to as a stay site), and the narrowband access or stay manner can refer to the existing manner. The terminal supporting narrowband communication can include at least one of a conventional narrowband terminal, a multi-mode terminal, and the like. The narrowband base station in the site and the terminal supporting narrowband communication can perform narrowband communication through a narrowband air interface to implement a narrowband service communication task. The terminal supporting WLAN communication can include at least one of a conventional wideband terminal, a multi-mode terminal, and the like. The specific description of the terminal supporting WLAN communication can refer to the foregoing description. The terminal supporting WLAN communication can establish a connection with a WLAN access point (AP) defined by an 802.11 WLAN protocol through an air interface. The AP can be referred to as an AP associated with the terminal, and the terminal is located in a WLAN coverage range provided by the AP. The AP performs data transmission between the narrowband base station and the terminal supporting WLAN communication. For example, the terminal supporting WLAN communication transmits data to the narrowband base station (i.e., the BS server), the AP can collect terminal messages around, determine the BS server as a receiving end by analyzing IP address information carried in the terminal message, and then forward the terminal message to the BS server matched with the IP address information through a TCP / IP network, to finally implement a WLAN data transmission task between the terminal user unit and the BS server.

[0048] Based on the foregoing, the narrowband base station (i.e., the BS server) connected with the AP and the terminal supporting WLAN communication can perform wideband communication through the AP, thereby providing a basis for the terminal supporting WLAN communication to access the narrowband base station through a wideband network and perform communication intercom service through the wideband network.

[0049] In addition, different sites can be interconnected through a TCP / IP network to implement IP interconnection networking. For example, Figure 2The networking schematic diagram of the wide-narrowband converged communication system composed of multiple converged communication sites is shown. Each narrowband base station and each AP can be interconnected through a TCP / IP network. In this case, the narrowband base stations in any site can be connected with the APs through the TCP / IP network for interconnecting the sites. Based on this, taking site 1 as an example, the narrowband base station BS1 in site 1 provides the narrowband coverage range of site 1, and the narrowband terminal MS1 and the multi-mode terminal MS2 in the narrowband coverage range can perform narrowband communication with BS1 through the narrowband air interface. The AP1 connected with BS1 in site 1 provides the wideband coverage range of site 1, and the multi-mode terminal MS2 and the multi-mode terminal MS3 in the wideband coverage range can perform WLAN communication with BS1 through AP1. On this basis, the terminal user units in the wide-narrowband communication range of different sites can perform cross-site communication through the BSs in each site and the TCP / IP network connecting the narrowband base stations. It should be noted that based on the inter-site interconnection mode shown in Figure 2 In addition to connecting AP1 in site 1, BS1 can also be connected with APs in other sites, so that the multi-mode terminals in the wideband coverage range provided by the APs in other sites can perform WLAN communication with BS1 through the APs in other sites, without the need to pass through the narrowband base stations in other sites. At this time, the multi-mode terminals in the wideband coverage range provided by the APs in other sites can perform WLAN communication with BS through the APs in other sites.

[0050] In another possible implementation, the narrowband base stations in different sites can be interconnected through a TCP / IP network, and the narrowband base stations in a site can be connected with the APs through the TCP / IP network. In this case, there can be traditional narrowband sites in the wide-narrowband converged communication system, i.e., there are narrowband base stations that are not connected with APs.

[0051] After the narrowband base stations in different sites are successfully networked, information sharing will be performed, such as sharing the state information of the narrowband base stations. Optionally, after successful networking, one of the narrowband base stations interconnected through the TCP / IP network can be set as a master base station, and the other narrowband base stations can be set as slave base stations. On this basis, the information sharing between the base stations is implemented by the slave base stations reporting their state information to the master base station, the master base station collecting the information and issuing the information to each slave base station.

[0052] Next, the service communication method provided by the present application is described from the perspective of the narrowband base station (i.e., the registration server).

[0053] The method for service communication based on a fusion communication station provided by the embodiment of the application can be applied to a first fusion communication station, the first fusion communication station comprising a terminal user unit and a first narrowband base station, the first narrowband base station being configured to be connected with an access point (AP) of a wireless local area network (WLAN) through a transmission control protocol / internet protocol (TCP / IP) network. The method is applied to the first narrowband base station, and the method can comprise the following steps:

[0054] In step S100, the terminal registration request is received through the TCP / IP network or the narrowband air interface.

[0055] The TCP / IP network in step S100 can comprise a TCP / IP network between the first narrowband base station and the AP, through which the first narrowband base station can receive a WLAN message of the terminal user unit supporting WLAN communication, such as a terminal registration request, a WLAN service, etc., from the connected AP.

[0056] In step S101, when the terminal registration request is received, the requesting terminal is subjected to registration access control.

[0057] The requesting terminal is a terminal user unit requesting to access the first narrowband base station through the terminal registration request in step S101, and the requesting terminal is a terminal user unit that is not currently accessing any narrowband base station through a wideband mode. That is, the terminal supports WLAN communication, and based on the fact that the terminal registration request of the requesting terminal is received by the first narrowband base station, the terminal is located within the WLAN communication range provided by the AP connected to the first narrowband base station, that is, the AP associated with the terminal belongs to the AP connected to the first narrowband base station, and the requesting terminal communicates with the first narrowband base station through the AP associated with the terminal. The terminal can be a multi-mode terminal or a wideband terminal, and the specific form of the terminal is not limited in the application.

[0058] The current non-access through a wideband mode can mean that the requesting terminal has not accessed any narrowband base station through a wideband mode before sending the terminal registration request in step S101, that is, this is the first time that the requesting terminal requests to register (that is, the first time that the requesting terminal requests to access the narrowband base station through a wideband mode). The current non-access through a wideband mode can also mean that the requesting terminal has accessed a certain narrowband base station through a wideband mode before sending the terminal registration request in step S101 (the narrowband base station to which the requesting terminal has accessed through a wideband mode last time is referred to as an original narrowband base station), but the connection is disconnected due to a terminal / base station, etc., so that the requesting terminal is not currently registered to any narrowband base station.

[0059] The terminal registration request is a WLAN message sent by the requesting terminal for requesting to access the first narrowband base station in a broadband manner, i.e., the first narrowband base station is the narrowband base station to which the requesting terminal requests to access in the current time, i.e., the target registration server of the requesting terminal.

[0060] Through the above registration access control, the terminal user unit under the WLAN network can be registered to access the registration server, i.e., to access the communication system in a broadband manner, thereby providing a basis for the terminal user unit supporting WLAN communication to use the WLAN network to receive and send services.

[0061] In step S102, when receiving the narrowband service or receiving the WLAN service, the receiving terminal of the received service is determined, and the service is forwarded based on the receiving terminal.

[0062] It should be noted that the narrowband service received by the first narrowband base station can be the narrowband service received by the first narrowband base station from the terminal user unit (such as a narrowband intercom device or a multi-mode terminal) through a narrowband air interface; the WLAN service received by the first narrowband base station can be the WLAN service received by the first narrowband base station from the terminal user unit (such as a multi-mode terminal) through the connected AP, i.e., the WLAN service at least includes the WLAN service sent by the terminal user unit accessing the first narrowband base station in a broadband manner.

[0063] In addition, the terminal user unit initiating the WLAN service can use the same user identity information, group information, and authentication information under the WLAN network and under the narrowband network, i.e., the terminal user unit can use the same user data to access different networks. For example, the terminal user unit can use the identity information, group information, and authentication information under the narrowband network to request registration to the registration server to access the WLAN network, and then use the terminal identity information under the narrowband network to perform WLAN service after accessing the narrowband base station (i.e., the registration server) in a broadband manner.

[0064] That is, even if the terminal user unit accessing the base station in a broadband manner is not within the narrowband communication range of the base station, or does not have narrowband communication capability, or all narrowband resources are occupied, the narrowband base station connected with the AP can still receive and process the WLAN service sent by the terminal. In one possible implementation, the narrowband base station can convert the received WLAN service into a narrowband service through network protocol conversion, and then process it in the existing manner, such as forwarding through a narrowband air interface.

[0065] In particular, in a communication system in which multiple sites are interconnected, the TCP / IP network described in step S100 can also include a TCP / IP network between the first converged communication site and the rest of the sites in the communication system, i.e., a TCP / IP network between the first narrowband base station in the first converged communication site and the rest of the narrowband base stations in the rest of the sites. Based on this, the narrowband service / WLAN service received by the first narrowband base station can also be narrowband service / WLAN service forwarded by other narrowband base stations through the inter-site TCP / IP network.

[0066] Based on the embodiment, the narrowband base station in the site is connected to the AP through the TCP / IP network, so that the terminal user unit supporting WLAN communication can perform WLAN communication with the narrowband base station connected with the AP by connecting the WLAN hotspot. Based on this, the terminal user unit supporting WLAN communication can send a terminal registration request through the associated AP to request registration to the narrowband base station connected with the AP (i.e., the registration server), so that the narrowband base station can perform registration access control in response to the terminal registration request received from the TCP / IP network, to realize the terminal access task in the WLAN network. Moreover, the narrowband base station connected with the AP can receive services through the narrowband air interface and the TCP / IP network, and then determine the receiving terminal in response to the received narrowband service or WLAN service, and perform service forwarding accordingly, to realize the service communication task between the transmitting terminal and the receiving terminal.

[0067] The embodiment realizes the access of WLAN network users and the access of WLAN services by means of the narrowband base station connected with the wireless access point AP. On this basis, the narrowband base station can receive and forward the narrowband service and the WLAN service, to realize the service communication task in the narrowband network and the WLAN network. The embodiment can break through the limitation of the limited coverage area of the narrowband private network and the limitation of the terminal service by the limited narrowband network resources to a certain extent. In addition, the application realizes wide / narrowband communication by upgrading the functions of the existing equipment on the basis of the existing narrowband system resources, i.e., the application reuses the existing narrowband system resources, without the need for additional deployment of POC servers, gateways / protocol conversion adapters, and other equipment, without the need for additional high hardware costs.

[0068] In one or more embodiments provided in the application, the step S102 described above, the service forwarding based on the receiving terminal, can include:

[0069] In the case where the first narrowband base station and the receiving terminal satisfy the narrowband communication relationship or satisfy the WLAN communication relationship, the service received by the first narrowband base station is issued in a target service mode.

[0070] The satisfying the narrowband communication relationship can include that the receiving terminal accesses the first narrowband base station in a narrowband manner, that is, the terminal supports narrowband communication and the narrowband stay site of the terminal is the first converged communication site where the first narrowband base station is located. The satisfying the WLAN communication relationship can include that the receiving terminal accesses the first narrowband base station in a wideband manner.

[0071] The target service mode is one of the two service modes that matches the satisfied communication relationship, that is, the receiving terminal supports the target service mode. In addition, the service mode described in the present application can be constituted by the network protocol type and the transmission mode of the transmitted data; the two service modes include a narrowband service mode of transmitting narrowband network protocol data through a narrowband network and a WLAN service mode of transmitting WLAN network protocol data through a WLAN network. It should be noted that in different communication scenarios, the receiving terminal described above can or can not be a terminal user unit supporting the WLAN service mode, that is, the service communication mode supported by the receiving terminal can be one of the following three cases: first, the narrowband service mode; second, the WLAN service mode; third, the narrowband service mode and the WLAN service mode. In particular, the target service mode corresponding to the third case is one of them.

[0072] On the basis described above, the service received by the first narrowband base station is issued in the target service mode, which can include:

[0073] When the received service matches the target service mode, the received service is directly issued through the target network;

[0074] When the received service does not match the target service mode, the received service is converted in network protocol, and the converted service is issued through the target network.

[0075] When the target service mode is the narrowband service mode, the target network is the narrowband network; when the target service mode is the wideband service mode, the target network is the WLAN network. That is, when the service mode supported by the receiving terminal is unique and does not match the protocol type of the service received by the first narrowband base station, the first narrowband base station can convert the received service between the narrowband network protocol and the WLAN network protocol, and then issue the protocol-converted service in the transmission mode supported by the receiving terminal.

[0076] By the above scheme, when the narrowband base station connected with the AP receives the narrowband service or the WLAN service, the narrowband base station can deliver the narrowband service data to the receiving terminal under the narrowband network in the station in the narrowband service mode, or deliver the wideband service data to the receiving terminal under the wideband network in the station in the WLAN service mode. Based on this, the terminal user unit supporting the WLAN service mode can receive the service through the WLAN service mode when located outside the narrowband communication range or when all the narrowband network resources are occupied, thereby further breaking through the limitation of the limited narrowband private network coverage area and the limited narrowband network resources on the terminal service.

[0077] In one or more embodiments provided in the present application, the step S102 of forwarding the service based on the receiving terminal can further include:

[0078] In a case where the first narrowband base station and the receiving terminal do not satisfy the narrowband communication relationship and do not satisfy the WLAN communication relationship, a second narrowband base station is determined, and the service is forwarded to the second narrowband base station.

[0079] The second narrowband base station is a narrowband base station satisfying at least one communication relationship with the receiving terminal, and the second narrowband base station and the first narrowband base station are not the same base station. In an actual scenario, the second narrowband base station can be a narrowband base station in other integrated communication sites, i.e., a narrowband base station connected with an AP in other sites, or can be a narrowband base station in other traditional sites, i.e., a narrowband base station not connected with an AP in other sites. The forwarded service is the service received by the first narrowband base station and matched with the service mode supported by the second narrowband base station, so as to be delivered to the receiving terminal by the second narrowband base station.

[0080] It should be noted that in a case where the second narrowband base station is not connected with an AP, the second narrowband base station does not support the WLAN service mode. Therefore, in a case where the communication service received by the first narrowband base station is the WLAN service, the first narrowband base station can perform network protocol conversion on the received service before forwarding, i.e., forwarding the service data matched with the service mode supported by the second narrowband base station to the second narrowband base station. In another possible implementation, the narrowband base station not connected with an AP can also be improved to have the network protocol conversion function. In this case, the second narrowband base station can be considered to support the WLAN service mode. However, the second narrowband base station does not satisfy the WLAN communication relationship with the receiving terminal. Therefore, in a case where the communication service received by the first narrowband base station is the WLAN service and the target service mode is the narrowband service mode, the network protocol conversion can be performed by the first narrowband base station or the second narrowband base station, so as to finally realize the service communication task between the receiving terminal and the transmitting terminal.

[0081] Based on the above, the application realizes the cross-site wideband and narrowband service communication task through the TCP / IP network between sites, and breaks through the limitation of the communication range of a single site WLAN or narrowband communication range on terminal service communication.

[0082] On the basis of the above, the registration server can be used for registration access control of the terminal user unit under the WLAN network, and can also be used for transmitting and receiving narrowband services and WLAN services, and converting the received communication services into narrowband network protocols and WLAN network protocols to realize the service communication task between the transmitting and receiving terminals, such as in-site or cross-site narrowband intercom service, WLAN intercom service or wideband and narrowband integrated intercom service.

[0083] Exemplarily, Figure 3 The service processing process of the BS server is shown, and the process can include: Figure 3 The process can include:

[0084] S1, receiving services through a TCP / IP network or a narrowband air interface;

[0085] S2, determining the receiving terminal of the received services;

[0086] S3, in the case that the base station and the receiving terminal satisfy the narrowband communication relationship or satisfy the WLAN communication relationship, issuing the received services in the target service mode;

[0087] S4, in the case that the base station and the receiving terminal do not satisfy the narrowband communication relationship and do not satisfy the WLAN communication relationship, determining a second narrowband base station, forwarding the services to the second narrowband base station, and issuing the services by the second narrowband base station in the service mode supported by the receiving terminal.

[0088] The description of the process can refer to the above description, which will not be repeated here.

[0089] From the perspective of receiving services from the base station, in one or more embodiments provided by the application, the narrowband services received by the first narrowband base station include services sent by the terminal user unit in the first integrated communication site in the narrowband service mode, or narrowband services forwarded by the narrowband base station in other sites to the first narrowband base station through the TCP / IP network between sites in response to the received services. That is, the received narrowband services can come directly from the terminal user unit, or from other narrowband base stations connected through the TCP / IP network. The aforementioned terminal user unit in the first integrated communication site refers to the terminal user unit with the first integrated communication site as the stay site.

[0090] Similarly, in one or more embodiments provided in the present application, the WLAN traffic received by the first narrowband base station includes: traffic sent by a terminal user unit accessing the first narrowband base station in a wideband manner, through any AP connected to the first narrowband base station, and in a WLAN traffic manner; or, WLAN traffic forwarded by a narrowband base station in another converged communication site to the first narrowband base station in response to received traffic through an inter-site TCP / IP network. That is, the received WLAN traffic can be directly from a terminal user unit, i.e., from a TCP / IP network connected to an AP, or from a TCP / IP network connected to another narrowband base station.

[0091] It should be noted that the traffic received by the narrowband base station in another converged communication site (assuming a base station b in site B) can be narrowband traffic sent by a terminal user unit camping on site B in a narrowband manner, or WLAN traffic sent by a terminal user unit accessing the base station b in a wideband manner. The narrowband traffic / WLAN traffic forwarded by the narrowband base station in another converged communication site can be traffic processed by the base station protocol conversion.

[0092] Based on the above scheme, the narrowband base station is connected with an access point AP, so that a terminal user unit supporting WLAN communication within the WLAN communication range provided by the AP can communicate with the narrowband base station through a WLAN link and a TCP / IP network, and the terminal user unit supporting WLAN communication can access the narrowband base station in a wideband manner, thereby breaking through the limitation of narrowband network coverage and narrowband channel resources on terminal communication. On this basis, the narrowband base station connected with the AP, i.e., a registration server, can receive narrowband traffic or WLAN traffic through a narrowband air interface or the connected AP, thereby realizing access of wide / narrowband traffic; then, the registration server can analyze the received traffic, determine a corresponding receiving terminal, and accordingly directly issue the traffic in a traffic manner supported by the receiving terminal, or forward the traffic to another narrowband base station for traffic issue by the another narrowband base station, thereby finally realizing wide / narrowband traffic communication between terminals in a site or between terminals across sites.

[0093] The process of the narrowband base station responding to a registration request and performing registration access control is described below.

[0094] In one or more embodiments provided in the present application, the information carried by the terminal registration request can include: IP address information of the requesting terminal and IP address information of the narrowband base station to which the requesting terminal requests to register, and terminal identity information of the requesting terminal.

[0095] It should be noted that the AP connected to the first narrowband base station can collect the terminal message around the periphery, determine the narrowband base station as the receiving end by analyzing the IP address information carried by the terminal message, and forward the terminal message to the narrowband base station matched with the IP address information through the TCP / IP network connected to the narrowband base station. In addition, in a multi-site interconnected communication system, the first narrowband base station is connected not only to the AP in the site, but also to the AP in other narrowband sites, and communicates with the terminal user unit supporting WLAN communication that stays in other sites in a wideband mode.

[0096] That is, the requesting terminal initiating the registration is connected to the WLAN hotspot in a communication mode and supports WLAN communication, and then sends a terminal registration request carrying IP address information of a target registration server through the WLAN link, wherein the sent registration request can be in the form defined by the 802.11 protocol; the AP forwards the terminal registration request to the target registration server after receiving the terminal registration request, so that the target registration server performs a registration response, such as registration judgment based on the received registration request and reply to the registration response according to the judgment result, and the registration response can be sent to the requesting terminal through the connected AP to achieve registration access control of the requesting terminal.

[0097] In addition, the first narrowband base station receiving the terminal registration request described above can represent that the first narrowband base station is the narrowband base station to which the requesting terminal requests to register, that is, the target registration server of the requesting terminal; it can also represent the AP associated with the requesting terminal, that is, the AP providing WLAN coverage for the requesting terminal, which is the AP connected to the first narrowband base station.

[0098] For example, the IP address information of the terminal user unit supporting WLAN communication can include the source IP, that is, the IP address of the terminal user unit sending the registration request; the terminal identity information can be the narrowband identity information of the terminal, such as terminal ID (Radio ID), group ID (group id), etc., in addition to other identity information such as site ID (Site ID), supported group list (group list), received signal strength indication (RSSI), global positioning system (GPS), etc., which can be used by the base station to determine the narrowband stay of the terminal user unit; the IP address information of the narrowband base station connected to the AP can include IP address and port (port).

[0099] The terminal registration request carrying the information can be a message sent when the terminal first requests registration. In addition, after the requesting terminal is disconnected from the wideband access relationship with the original narrowband base station, the terminal registration request can be reused by the requesting terminal to re-request registration. That is, the terminal registration request carrying the information can also be a message sent when the terminal re-requests registration.

[0100] On the basis of the above, the step S101 of performing registration access control on the requesting terminal can include the following steps:

[0101] The step S301 of analyzing the terminal registration request to determine the terminal identity information of the requesting terminal that requests registration.

[0102] The narrowband base station can determine the terminal user unit that requests registration, i.e., the requesting terminal, by analyzing the payload information carried by the received terminal registration request, and then perform a registration response.

[0103] The step S302 of sending a registration success response message to the requesting terminal through the AP connected to the first narrowband base station in the case where the first narrowband base station meets the pre-configured registration success condition, and configuring the registration information of the requesting terminal based on the terminal registration request for the remaining narrowband base stations to obtain.

[0104] In a possible implementation, the registration success condition is pre-configured as a first success condition, and the first success condition includes that the narrowband base station supports the registration of the requesting terminal.

[0105] The narrowband base station in the present application refers to the narrowband base station that judges whether the registration condition (such as the registration success condition) is met. For example, when the first narrowband base station judges whether a certain condition is met, the narrowband base station refers to the first narrowband base station. According to the foregoing first success condition, the requesting terminal can be successfully registered when the narrowband base station to which the terminal requests registration supports the registration of the terminal, thereby accelerating the wideband access process of the requesting terminal, so that the requesting terminal can use the wideband network to initiate services as soon as possible, and the availability of the terminal can be improved.

[0106] Optionally, supporting the registration of the requesting terminal can include that the network state of the narrowband base station is normal, the AP associated with the requesting terminal belongs to the AP connected to the narrowband base station, and the number of terminals registered to the narrowband base station does not exceed a preset upper limit of the registration number. The upper limits of the registration numbers of different narrowband base stations can be the same or different, which is not limited in the present application.

[0107] In another possible implementation, the registration success condition is configured as a second success condition, and the second success condition comprises: the current narrowband base station supports the registration of the requesting terminal and is a narrowband base station within the staying site of the requesting terminal, or the current narrowband base station supports the registration of the requesting terminal and a narrowband base station within the staying site of the requesting terminal does not support the registration of the requesting terminal.

[0108] For example, the narrowband base station within the staying site of the terminal can be determined by the site ID carried in the terminal identity information, and the narrowband base station within the staying site of the terminal refers to a narrowband base station that processes the narrowband service of the requesting terminal. In this embodiment, the narrowband base station within the staying site of the terminal is taken as the preferred registration base station of the terminal, so as to achieve the purpose of enabling the terminal to access the same narrowband base station through the wideband mode and the narrowband mode. In other possible implementations, other registration servers (such as a registration server with stronger processing capability) can also be taken as the preferred registration base station of the terminal.

[0109] It should be noted that, for the case where the first narrowband base station is not the preferred registration base station (such as the narrowband base station within the staying site of the terminal) of the requesting terminal, the first narrowband base station can obtain the terminal registration information of the remaining narrowband base stations through the TCP / IP network between sites, and determine the case of the remaining narrowband base stations (especially the preferred registration base station) according to the terminal registration information. In the case where the network of the preferred registration base station is abnormal, the number of terminals registered in the preferred registration base station reaches the upper limit, or the like, it is determined that the preferred registration base station does not support the registration of the requesting terminal.

[0110] According to the foregoing second success condition, the requesting terminal can be successfully registered in the narrowband base station within the staying site of the terminal when the narrowband base station supports the registration, so as to be managed by the same narrowband base station and process the wideband service and the narrowband service of the requesting terminal, which helps to relieve the terminal management pressure and the cross-site communication pressure of the narrowband base station. In addition, the requesting terminal can be successfully registered in the requested registration narrowband base station when the narrowband base station within the staying site of the terminal does not support the registration, so as to speed up the wideband access process of the terminal.

[0111] The registration success response message is used to indicate that the requesting terminal has been successfully registered in the requested registration narrowband base station. According to the registration success response message, the requesting terminal can determine that the requesting terminal is successfully registered in the target registration server (i.e., the first narrowband base station) requested by the terminal, and then the requesting terminal establishes a WLAN channel between the requesting terminal and the first narrowband base station to transmit WLAN messages such as WLAN services. The channel can specifically include a WLAN link between a terminal user unit and an AP and a TCP / IP network between the AP and the narrowband base station.

[0112] The registration information of the requesting terminal configured by the first narrowband base station indicates that the requesting terminal has accessed to the first narrowband base station in a wideband mode, and the information can be used by the remaining narrowband base stations to determine that the terminal supports the WLAN service mode and that the terminal and the first narrowband base station satisfy the WLAN communication relationship. It should be noted that when the first narrowband base station determines that the registration success condition is satisfied and configures the registration information of the requesting terminal, it can be assumed that the wideband access relationship between the requesting terminal and the first narrowband base station is in a normal state. Due to the influence of network factors, the wideband access relationship between the requesting terminal and the first narrowband base station can change to a disconnected state, which indicates that the requesting terminal still occupies the terminal registration quota of the first narrowband base station, but the requesting terminal and the first narrowband base station can not perform WLAN communication. Based on this, in order to improve the service reliability, the state of the wideband access relationship can be marked in the registration information, that is, a field indicating the state of the wideband access relationship is set. When the registration information is initially configured, the value of the configured state field indicates that the wideband access relationship between the two is in a normal state, not a disconnected state.

[0113] In addition, when the registration success condition is not satisfied, the first narrowband base station can not send a registration response to the requesting terminal that requests registration, or can send a registration response to the requesting terminal that requests registration, which indicates that the registration at the first narrowband base station fails.

[0114] Based on the above scheme, a terminal user unit that supports WLAN communication and is not registered to a narrowband base station can initiate a terminal registration request through a WLAN communication mode to register with a register server in the system. The terminal registration request sent carries the required payload information to report the terminal identity information and the IP address information to the requested register server. The requested register server can obtain the terminal registration request through an AP, and then send a registration success response message and configure registration information when it is determined that the registration success condition is satisfied, thereby completing the WLAN network user access task. Thereafter, the terminal user unit connected to the WLAN hotspot can access the IP network through the WLAN network and perform wideband intercom as a WLAN user. Based on this, the registration process of the terminal user unit can also be regarded as a process in which the terminal user unit that supports WLAN communication applies for system resources. The narrowband base station can perform access control and service communication control on terminal devices under different networks to realize multi-network standard communication fusion between different network standards. In addition, the narrowband base station can perform unified network management and user management, and also perform unified allocation and scheduling of narrowband network resources and WLAN network resources.

[0115] It should be noted that the narrowband base stations in different sites can be interconnected by IP networking, and the state information of each narrowband base station will be synchronized after the networking is successful. For example, the state information of the narrowband base station can include: site ID, load state identifier, and registration information of the terminal user unit registered to the base station, etc. The load state identifier can be represented as a field value representing whether the load is full or not; the number of registration information of the terminal user unit registered to the base station can represent the number of terminals registered to the server, and in one possible implementation, the number of terminals can be included in the state information; the registration information of the terminal user unit can include the terminal identity information of the terminal user unit, which can be described with reference to the foregoing description. For example, the state information of a registration server can be represented as: {site ID, load state identifier, number of terminals N, N x {Radio ID, Site ID, Group List, RSSI, GPS,...}. In addition, the state information of each registration server can form an access management table of the system, so as to be used for registration judgment by each registration server, or be used for query when service forwarding is performed, to determine the narrowband base station satisfying the WLAN communication relationship with the receiving terminal.

[0116] In one possible implementation, the narrowband base stations in different sites can uniformly report the received terminal information of the WLAN network and the narrowband network to a background, which can be a control center, a dispatching station, or a network management system, etc., so as to implement unified access control, unified scheduling management, and unified network management of the terminal user units and the base stations in the system. For example, the background or the dispatching station can uniformly manage and schedule the terminals under the narrowband / WLAN network accessing the narrowband base station, without the need of setting an additional gateway conversion or adding an additional hardware server; the network management system can uniformly manage the narrowband network and the WLAN network of the terminals under the narrowband / WLAN network accessing the narrowband base station, and in addition, can perform remote configuration management on the accessed terminals, and monitor and warn the network status of each cell site, so as to implement one-network login and one-network management.

[0117] For example, after the narrowband base stations in different sites are networked, one of the narrowband base stations can be used as a core base station, i.e., a master base station, which can also be referred to as a Master server; and the remaining base stations can be used as non-core base stations, i.e., slave base stations, which can also be referred to as Slave servers. All the slave base stations synchronize the state information to the master base station, the master base station aggregates the state information of each narrowband base station, and then sends the state information to each narrowband base station, so as to ultimately implement the task of sharing the related information of the narrowband base stations in different sites.

[0118] On this basis, the process of configuring the registration information of the requesting terminal by the first narrowband base station can include:

[0119] The registration information of the requesting terminal is generated based on the terminal identity information of the requesting terminal carried in the terminal registration request, and a field value representing the wideband access relationship state of the requesting terminal is updated, and the obtained registration information is synchronously forwarded to the master base station in the system, so that the master base station distributes the registration information of the terminal user unit accessing the system to other slave base stations.

[0120] In one or more embodiments provided in the present application, the step S101 of performing registration access control on the requesting terminal can further include:

[0121] In step S303, if the registration failure condition is met, a registration failure response message is sent to the requesting terminal through the AP connected to the first narrowband base station, so as to instruct the requesting terminal to perform registration retry after waiting.

[0122] The registration failure condition includes that the first narrowband base station and each of the remaining narrowband base stations interconnected through the TCP / IP network do not support the registration of the requesting terminal, i.e., the system currently does not support the registration of the requesting terminal. For example, the registration failure condition can include that each of the narrowband base stations connected to the AP associated with the requesting terminal does not support registration, such as network state anomaly or terminal registration quantity reaching a preset upper limit. Based on this, the requesting terminal can perform registration retry after waiting. Optionally, after sending the terminal registration request, the requesting terminal can start a waiting response timer to monitor the registration response of the target registration server to the requesting terminal, so as to perform request retransmission in the case that the registration response is not received for a long time, so as to avoid the registration failure caused by accidental network factors. It should be noted that the waiting time of the requesting terminal after receiving the registration failure response message for registration retry can be greater than the waiting time of the request retransmission, i.e., the timing duration of the waiting response timer.

[0123] Based on the above, the first narrowband base station can obtain the terminal registration state of each of the remaining narrowband base stations, and accordingly, in the case that each of the remaining narrowband base stations does not support the requesting registration, i.e., in the case that the network is abnormal or the terminal registration quantity reaches the corresponding registration quantity upper limit, a registration failure response message is fed back to the requesting terminal requesting registration. Compared with the scheme of not feeding back the registration response when the requesting terminal registration is not supported, the above scheme can make the requesting terminal know that the remaining narrowband base stations also do not support the terminal registration, based on which the requesting terminal can perform registration or apply for system resources after waiting for a period of time, so as to avoid the situation that the requesting terminal repeatedly performs useless registration, thereby saving resources.

[0124] It should be noted that, since the narrowband base station in a certain site can connect to the APs in the site and the APs in other sites, the narrowband base station in a certain site can communicate with the terminal user units in the site or other sites through the TCP / IP network, and the terminal user unit staying in a certain narrowband site can access different narrowband base stations under different networks and be managed by multiple narrowband base stations.

[0125] To solve the problem, in one possible implementation, the location relationship between the terminal and the narrowband coverage of the narrowband base station in the site can be determined according to the GPS information carried in the terminal identity information. If the terminal is located in the narrowband coverage of a certain site, the terminal is more likely to stay in the site, and accordingly, the narrowband base station in the site can be used as the preferred registration base station of the terminal. At this time, the registration success condition can include: the current narrowband base station supports the registration of the requesting terminal and the current narrowband base station is the preferred registration base station of the requesting terminal; or the current narrowband base station supports the registration of the requesting terminal and the preferred registration base station of the requesting terminal does not support the registration of the requesting terminal.

[0126] In one or more embodiments provided in the present application, the step S101 of performing registration access control on the requesting terminal can further include:

[0127] The step S304 of determining, in the case where the registration success condition is not met, one narrowband base station supporting the registration of the requesting terminal from the remaining narrowband base stations interconnected with the first narrowband base station through the TCP / IP network as a redirection registration server, and sending a redirection registration response message to the requesting terminal through the AP connected to the first narrowband base station.

[0128] It should be noted that, in the case where the registration success condition is configured as the first success condition, the registration success condition not being met means that the current narrowband base station does not support the registration of the requesting terminal. In the case where the registration success condition is configured as the second success condition, the registration success condition not being met means that the current narrowband base station is not the narrowband base station in the staying site of the requesting terminal and the narrowband base station in the staying site supports the registration of the requesting terminal, or the narrowband base station in the staying site does not support the registration of the requesting terminal and the current narrowband base station does not support the registration of the requesting terminal. The first narrowband base station can or can not be the narrowband base station in the staying site of the requesting terminal. The present embodiment is only described by taking the narrowband base station in the staying site as the preferred registration base station as an example, and the registration access control scheme based on other preferred registration base stations can be referred to the foregoing description.

[0129] In a special case, if the registration success condition is not met and no redirection server supporting the registration of the request terminal is determined, no response is made. This case is also the case where the registration failure condition is met, and thus a registration failure response message can be sent.

[0130] The redirection registration response message carries IP address information of the redirection registration server, and is used to instruct the request terminal to request registration from the redirection registration server. For example, the IP address information of the redirection registration server can include an IP address and port information of the redirection registration server. It should be noted that the IP address of the redirection registration server can be a static IP address or a dynamic IP address.

[0131] Optionally, the dynamic IP can be configured by a master base station in the system. Based on this, in a case where the first narrow base station needs to feed back a WLAN message (such as a redirection registration response message) carrying a dynamic IP to the request terminal, and the first narrow base station is a master base station, the first narrow base station can perform dynamic IP configuration, and send the WLAN message based on the configured dynamic IP; in a case where the first narrow base station needs to feed back a WLAN message (such as a redirection registration response message) carrying a dynamic IP to the request terminal, and the first narrow base station is a slave base station, the first narrow base station can request the master base station to perform dynamic IP configuration, and then send the WLAN message based on the dynamic IP obtained from the master base station.

[0132] Through the above scheme, the narrow base station can feed back a redirection registration response message to the request terminal to inform the request terminal to redirect to a specified server for registration in a case where the registration success condition is not met and there is a narrow base station supporting the registration of the request terminal, without the request terminal making a purposeless registration attempt. Based on this, the embodiment can accelerate the broadband access efficiency of the request terminal to a certain extent.

[0133] In a possible implementation, the step S304 of determining one narrow base station supporting the registration of the request terminal from each remaining narrow base station interconnected with the first narrow base station through a TCP / IP network as a redirection registration server can include:

[0134] Step A: determining whether a narrow base station in a stay site of the request terminal supports the registration of the request terminal, and if the registration is supported, performing step B, or if the registration is not supported, performing step C.

[0135] Step B: determining the narrow base station in the stay site as a redirection registration server.

[0136] Step C: determining an alternative server of the first narrow base station as a redirection registration server.

[0137] The alternative server of the first narrowband base station is a narrowband base station supporting the registration of the requesting terminal. It should be noted that, in order to improve the availability of the system, the narrowband base stations can be redundantly backed up, i.e., multiple narrowband base stations are deployed, and for any narrowband base station, another narrowband base station is designated as the alternative server of the narrowband base station. Alternatively, the alternative servers of the narrowband base stations can be designated by a Master master base station or a Sub-Master secondary master base station in the system, or designated according to other rules, which are not limited in the present application.

[0138] In addition, the alternative servers of the narrowband base stations can be the same or different. In one possible implementation, in a scenario where the narrowband base stations in each narrowband site are interconnected with the AP, a narrowband base station in one narrowband site can be designated as the alternative server of each of the remaining narrowband base stations, i.e., only one alternative server exists in the communication system at the same time, and then a new alternative server is re-designated when the number of terminal registrations of the alternative server reaches the upper limit of the corresponding registration number or the network is abnormal. When the alternative servers of different narrowband base stations are not completely the same, the alternative servers of the narrowband base stations can be balanced and adjusted according to actual conditions.

[0139] The above scheme increases the possibility of the terminal accessing the preferred registration base station in a wideband manner by enabling the requesting terminal to request registration with the narrowband base station in the site where the terminal stays when the requesting terminal fails to register with the narrowband base station in the site where the terminal stays.

[0140] The present embodiment designates the narrowband base station in the site where the terminal stays as the preferred registration base station of the terminal, which can enable the terminal user unit to register with the narrowband base station in the site where the terminal stays as much as possible. In this case, the narrowband base station processing the narrowband service and the WLAN service of the terminal user unit is the same, and the narrowband base station and the AP receiving and transmitting the WLAN service of the terminal belong to the same narrowband site, which can reduce the possibility of cross-site communication.

[0141] In addition, when determining the redirection registration server, especially when the preferred registration base station does not support registration, the first narrowband base station can be configured based on the load conditions of the narrowband base stations in the system, so as to balance the system load or system resources.

[0142] That is, for the alternative server, in one possible implementation, the alternative server can be set according to the terminal registration conditions of the narrowband base stations in different sites in the system, i.e., the alternative server is dynamically adjusted, so as to realize efficient utilization of the wireless channel resources.

[0143] Based on the above, the process of the first narrowband base station performing registration access control on the requesting terminal can include:

[0144] The first step is to determine whether the base station is a narrowband base station in the requested terminal's stay site. If not, the second step is performed. If yes, the fourth step is performed.

[0145] The second step is to determine whether the narrowband base station in the stay site supports the requested terminal registration. If yes, the third step is performed. If not, the fourth step is performed.

[0146] The third step is to send a redirection registration response message carrying the IP address information of the narrowband base station in the stay site to the requested terminal, so that the requested terminal performs redirection registration.

[0147] The fourth step is to determine whether the base station supports the requested terminal registration. If yes, the fifth step is performed. If not, the sixth step is performed.

[0148] The fifth step is to send a registration success response message to the requested terminal, so that the requested terminal establishes a WLAN path.

[0149] The sixth step is to determine whether there is a narrowband base station supporting the requested terminal registration from the remaining narrowband base stations interconnected with the base station through a TCP / IP network. If yes, the seventh step is performed. If not, the eighth step is performed.

[0150] The seventh step is to determine a narrowband base station supporting the requested terminal registration from the remaining narrowband base stations as a redirection registration server, and send a redirection registration response message carrying the IP address information of the redirection registration server to the requested terminal, so that the requested terminal requests registration from the redirection registration server.

[0151] The eighth step is to send a registration failure response message to the requested terminal, so that the requested terminal performs registration retry after waiting.

[0152] For example, it is assumed that there are five sites in the system, and the narrowband base stations in each site are interconnected with the AP through a TCP / IP network. The narrowband base stations in each site are denoted as BS1, BS2, BS3, BS4, and BS5. Terminals MS10-MS19 are narrowband-stayed in BS1, terminals MS20-MS29 are narrowband-stayed in BS2,..., and terminals MS50-MS59 are narrowband-stayed in BS5. Each site is allocated a different alternative server. The specific case is shown in Table 1.

[0153] Table 1

[0154]

[0155] Based on the above, any terminal MS1x in MS10~MS19 can initiate a registration request to the pre-assigned preset server BS1, and since the registration number of BS1 does not reach the upper limit, BS1 will feedback a registration success response message, and the terminal MS1x is successfully registered to BS1; the terminal MS29 initiates a registration request to the pre-assigned preset server BS2, and since the registration number of BS2 has reached the upper limit, a redirection registration response message is fed back to inform MS29 to register to BS5, and MS29 switches to initiate a registration request to the redirection registration server BS5.

[0156] Based on the above, Figures 4-6 The flowchart of the process in which the narrowband base station responds to the terminal registration request of the requesting terminal is illustrated, Figures 4-6 corresponding to the scenarios of registration success, registration failure and redirection registration respectively. Specifically:

[0157] The terminal user unit MS supporting WLAN communication sends a terminal registration request to the narrowband base station x (denoted as Register Server x) to which the registration is requested, which can carry the terminal ID, site ID, group ID, supported group list, received signal field strength, positioning information and other narrowband identity information, and then the narrowband base station x sends a registration response message representing the response result as registration success (Result: Success) to the MS when the registration success condition is met, i.e. the registration success response message, as shown in Figure 4 .

[0158] When the narrowband base station x determines that the terminal registration number of each narrowband base station reaches the corresponding upper limit, i.e. the system does not support registration, it sends a registration response message representing the response result as registration failure (Result: Failure) to the MS, i.e. the registration failure response message, as shown in Figure 5 .

[0159] When the narrowband base station x does not meet the registration success condition and there is a remaining narrowband base station supporting MS registration, it sends a registration response message representing the response result as redirection (Result: Redirect) to the MS, i.e. the redirection registration response message, which carries the IP address information of the narrowband base station y (i.e. the redirection registration server, denoted as Register Server y) supporting MS registration, such as IP address and port information, as shown in Figure 6 , the MS determines to register to the narrowband base station y after receiving the redirection registration response message, and sends a terminal registration request to the narrowband base station y to which the registration is requested, which carries the identity information as described above, and then the narrowband base station y sends a registration response message representing the response result as registration success (Result: Success) to the MS when the registration success condition is met, i.e. the registration success response message.

[0160] In one or more embodiments provided in the present application, the information carried by the terminal registration request can include: IP address information of the requesting terminal and IP address information of the narrowband base station to which the requesting terminal requests to register, and identification information for representing that the message is a re-registration request.

[0161] Wherein, based on the first narrowband base station being able to receive the terminal registration request of the requesting terminal, the narrowband base station to which the requesting terminal requests to register is the first narrowband base station. The requesting terminal sending the above registration request can be a re-registration terminal supporting WLAN communication and disconnected from the wideband relationship of the original narrowband base station, and the original narrowband base station is the narrowband base station to which the re-registration terminal is last successfully registered. The reason for the disconnection of the wideband access relationship can be terminal abnormality, such as terminal shutdown, or base station abnormality, such as network abnormality of the original narrowband base station, which is not limited in the present application.

[0162] In addition, the terminal registration request carrying the above identification information can carry or not carry terminal identity information. In order to realize registration judgment, the first narrowband base station needs to obtain the terminal identity information of the requesting terminal, such as from the terminal registration request or from the registration information configured by the original narrowband base station.

[0163] On the basis of the above, step S101, the registration access control on the requesting terminal can include the following steps:

[0164] Step S401, parsing the terminal registration request to determine the requesting terminal requesting registration.

[0165] Step S402, in the case that the terminal registration request is determined to be a re-registration request based on the identification information carried by the terminal registration request, searching for registration information of the requesting terminal from the first narrowband base station and each remaining narrowband base station interconnected through a TCP / IP network.

[0166] Step S403, in the case that the registration information of the requesting terminal is found, sending a registration success response message to the requesting terminal through the AP connected by the first narrowband base station, and configuring the registration information of the requesting terminal for the remaining narrowband base stations to obtain.

[0167] Wherein, the first narrowband base station finding the registration information of the requesting terminal can represent that the requesting terminal is a re-registered terminal user unit, i.e., the terminal has registered to a certain narrowband base station and has a wideband access relationship with a certain narrowband base station in a disconnected state, i.e., the system currently supports the registration of the requesting terminal.

[0168] The registration success response message is used to indicate the requested terminal has successfully registered to the narrowband base station to which the terminal requests to register. The description of the registration success response message can refer to the foregoing description. In another possible implementation, a re-registration success response message different from the registration success response message can also be used to indicate the re-registered terminal has successfully registered to the target registration server.

[0169] The configured registration information of the requested terminal indicates that the requested terminal has accessed to the first narrowband base station in a wideband mode. The information can be acquired by the remaining narrowband base stations, for example, to determine whether the terminal supports the WLAN service mode.

[0170] Based on the foregoing scheme, the terminal user unit disconnected with the original narrowband base station can initiate a re-registration request through the WLAN to re-establish a wideband access relationship in a normal state with the narrowband base station and re-access to a certain narrowband base station in a wideband mode.

[0171] On the basis of the foregoing, the registration access control on the requested terminal in step S101 can further include:

[0172] In the case of a lookup miss, the identity information reporting request is sent to the requested terminal through the AP connected with the first narrowband base station to instruct the requested terminal to report the terminal identity information.

[0173] In step S405, the registration access control is performed according to the received terminal identity information of the requested terminal.

[0174] For example, the registration access control can include:

[0175] In the case of meeting the registration success condition, the registration success response message is sent to the requested terminal through the connected AP, and the registration information of the requested terminal is configured; or

[0176] In the case of meeting the registration failure condition (i.e., not meeting the registration success condition and there is no narrowband base station supporting the requested registration), the registration failure response message is sent to the requested terminal through the connected AP; or

[0177] In the case of not meeting the registration success condition and there is a narrowband base station supporting the requested registration (which can be referred to as meeting the redirection registration condition), the redirection registration response message carrying the IP address information of the redirection registration server is sent to the requested terminal through the connected AP. The specific registration access control process can refer to the foregoing description of Figures 4-6 and the corresponding description, which will not be repeated here.

[0178] In one or more embodiments provided in the present application, the information carried in the registration success response message includes IP address information of the alternative server of the first narrowband base station, so that the requesting terminal configures the alternative server information and requests registration from the narrowband base station matching the alternative server information when the first narrowband base station is unavailable.

[0179] The alternative server of the first narrowband base station is a narrowband base station different from the first narrowband base station and supporting registration of the requesting terminal. The alternative server is described above. That is, Figure 4 The registration success response message shown in the figure can also include IP address information of the alternative server, specifically, IP address (Selected IP) and port information of the alternative server. It should be noted that, Figures 4-6 The example of the narrowband base station responding to the terminal registration is just an example. The messages transmitted between the narrowband base station and the terminal user unit can include other information in addition to the information shown in the figure.

[0180] Based on the above scheme, the terminal user unit can obtain the information of the alternative server supporting registration, so that the terminal user unit can request registration from the alternative server when the narrowband base station where the terminal user unit registers fails or is unavailable, that is, automatically switch to the alternative server to restore service capability, thereby ensuring normal performance of the broadband intercom task. In addition, when the narrowband base station where the terminal user unit registers recovers, the terminal user unit can automatically or in the case that the alternative server is unavailable switch back to the narrowband base station where the terminal user unit registers.

[0181] In one or more embodiments provided in the present application, the narrowband base station where the requesting terminal requests registration can include:

[0182] The narrowband base station matching the preset server information configured by the requesting terminal when writing frequency; or,

[0183] The narrowband base station matching the IP address information of the redirection registration server carried in the redirection registration response message received by the requesting terminal; or,

[0184] The original narrowband base station where the requesting terminal last successfully registers; or,

[0185] The narrowband base station matching the alternative server information configured by the requesting terminal.

[0186] That is, the first narrowband base station described above can be the narrowband base station x shown in the figure, or the narrowband base station y shown in the figure. The two cases are described below. Figures 4-6 Figure 6 The narrowband base station x shown in the figure, or the narrowband base station y shown in the figure. The two cases are described below.

[0187] ​It should be noted that the terminal user unit under the WLAN network is pre-configured with preset server information, i.e. the IP address and port of the preset narrowband base station (referred to as preset server) and other information. Optionally, the information representing the IP address of the preset server in the preset server information can be the domain name of the preset server, i.e. a string used to identify and locate a computer or network service on the Internet, and the terminal user unit supporting WLAN communication can query based on the domain name to obtain the IP address of the preset server. In another possible implementation, the preset server information can include the IP address of the preset server, which is a static IP address. In addition, the information can be the information configured by the terminal when the WLAN network system is configured, and the configured information can also include the site ID. In addition, if the narrowband base stations of different sites are networked and configured as master and slave base stations, the preset server information configured on the terminal is the IP address information of the master base station.

[0188] On this basis, the terminal user unit integrated with the WLAN module / chip can enter the WLAN network mode, support WLAN communication, and request registration to the preset server when the WLAN switch is in the on state (i.e. powered on) and the WLAN service mode switch is in the on state. The terminal registration request sent by the request terminal to the preset server of the terminal can be the terminal registration request sent by the request terminal after the first power-on or switching to a new channel / site, i.e. the terminal usually requests to register to the preset server when it is registered for the first time. In a possible implementation, the WLAN network mode can be configured to be associated with the channel / site, i.e. the physical channel switching button can be manually switched to change the state of the WLAN network mode; based on this, the above-mentioned switching to a new channel / site can mean switching from a channel / site with the WLAN network mode closed to a new channel / site with the WLAN network mode opened, wherein the channel / site with the WLAN network mode closed can mean a channel / site supporting only narrowband communication, and the new channel / site with the WLAN network mode opened can mean a new channel / site supporting only WLAN communication, or a new channel / site supporting both narrowband communication and WLAN communication. The terminal registration request sent by the request terminal to the preset server of the terminal can also be the registration request sent when the request terminal re-requests registration.

[0189] The redirection registration response message received by the request terminal is a registration response message sent by the narrowband base station to which the request terminal previously requested registration, in response to the original terminal registration request sent by the request terminal when previously requesting registration, in a case where the registration success condition is not met and there is a remaining narrowband base station supporting registration of the request terminal. The redirection registration server is a narrowband base station supporting registration of the request terminal. The process of the original narrowband base station responding to the original terminal registration request of the request terminal can refer to the redirection registration response process of the first narrowband base station described above.

[0190] The alternative server information is information configured by the request terminal based on the IP address information of the alternative server of the original narrowband base station carried in the WLAN message (for example, a registration success response message) sent by the original narrowband base station after successfully registering with the original narrowband base station. The alternative server of the original narrowband base station is a narrowband base station different from the original narrowband base station and supporting registration of the request terminal.

[0191] It should be noted that the IP addresses of the redirection registration server, the original narrowband base station, and the alternative server can all be dynamic IP addresses configured by the master base station. Based on this, when the terminal re-registers, the terminal can fail to register due to invalid IP address information of the original narrowband base station and the alternative server recorded by the terminal. In this case, the terminal can preferentially re-request registration from a preset server to access the wideband network through the preset server or obtain the narrowband base station information supporting registration of the terminal through the registration response message fed back by the preset server.

[0192] For example, in the communication system described in Table 1, it is assumed that the terminal MS 50 is disconnected from the wideband access relationship with the BS 5 after successfully registering with the BS 5. Then, the MS 50 can re-register, first initiates a registration request to the original narrowband base station BS 5, and if no registration response is received, attempts to initiate a registration request to the alternative server BS 1. In addition, the original narrowband base station BS 5 can be a dynamic IP address, which is different from the preset server (for example, a static IP address of the master base station) set by the MS 50. Based on this, the MS 50 can also attempt to initiate a registration request to the preset server when no registration response is received and registration fails.

[0193] In one or more embodiments provided in the present application, the terminal registration request is a registration request first sent by the request terminal after determining the narrowband base station to be registered, or a registration request retransmitted by the request terminal when a message retransmission condition is met.

[0194] The message retransmission condition includes that the request terminal has not received a registration response message of the request terminal from the narrowband base station to which the request terminal requests registration within a timeout period, and the number of times of retransmitting the current request does not exceed a preset maximum number of retransmissions.

[0195] For example, the terminal user unit initiating the registration can start a waiting response timer after sending the terminal registration request to monitor the registration response of the terminal to the narrowband base station to which the terminal requests to register (i.e. the target registration server), and then retransmit the request if the timer expires and the number of retransmissions does not reach the upper limit. It should be noted that if any registration response message is monitored, the waiting response timer will stop, otherwise it will continue to count until it stops after expiration. Based on this, the expiration of the waiting response timer can represent that the terminal user unit requesting registration is affected by network fluctuations and other factors, and has not received the registration response message of the narrowband base station to which the terminal requests to register for a long time. In this case, the terminal registration request can be retransmitted. Optionally, the timing duration specified by the waiting response timer can be set according to the two-way communication time between the terminal user unit and the narrowband base station.

[0196] On this basis, to avoid the terminal user unit frequently retransmitting the request, the maximum number of retransmissions of the terminal registration request can be set, which can refer to the number of retransmissions of the terminal registration request to a single narrowband base station. If the number of retransmissions of a terminal registration request does not exceed the maximum number of retransmissions, the retransmission is allowed to reduce the possibility of terminal registration failure caused by accidental transmission abnormalities, otherwise the retransmission is not allowed, which can represent that the terminal user unit requesting registration fails to register.

[0197] On the basis of the registration access control based on the registration request, the terminal user unit successfully registered to the narrowband base station and the narrowband base station to which it is successfully registered can also transmit a heartbeat message to configure the state of the wideband access relationship between the terminal user unit and the narrowband base station, i.e. the WLAN user access state, by maintaining the heartbeat connection between the MS and the BS, thereby improving the service reliability of the accessed WLAN user. Next, the heartbeat transmission process of the first narrowband base station is exemplarily described.

[0198] In one or more embodiments provided in the present application, the method can further include:

[0199] Step S103, when the terminal heartbeat message of the registered terminal is received, it is determined that there is a wideband access relationship in a normal state between the registered terminal and the first narrowband base station.

[0200] Wherein, the registered terminal is a terminal user unit successfully registered to the first narrowband base station, and the terminal heartbeat message is a WLAN heartbeat message sent by the registered terminal when it is determined that the wideband access relationship between the registered terminal and the first narrowband base station is normal and the terminal heartbeat sending condition is met.

[0201] Optionally, the terminal heartbeat sending condition comprises: the current time is a heartbeat message sending time specified by a terminal heartbeat sending period, or a difference between terminal information of the registered terminal and terminal information at a time when the registered terminal last sent a heartbeat message exceeds a preset limit. That is, the terminal user unit can periodically send a terminal heartbeat message after determining that registration is successful upon receiving a registration success response message, to actively maintain a heartbeat connection with the narrowband base station to which registration is successful.

[0202] For example, the payload information (i.e., the terminal information described above, which can be referred to as terminal heartbeat information) carried by the terminal heartbeat message can include identity information of the terminal, such as Radio ID. Optionally, the identity information carried by the terminal heartbeat message can also include Site ID, RSSI, GPS, and the like. In addition, the payload information carried by the terminal heartbeat message can also include terminal state information. For example, when roaming is enabled, the terminal state can include a roaming stay state or a roaming detection state.

[0203] On the basis described above, the difference between the two terminal information exceeding the preset limit can refer to a change in site of the terminal, a change in state of the terminal, a large change in field strength information RSSI or GPS position information of the terminal, and the like.

[0204] Through the above scheme, the narrowband base station can determine that the terminal user unit registered to the base station has a normal wideband access relationship with the base station by receiving the terminal heartbeat message of the terminal user unit registered to the base station. Based on this, each of the remaining narrowband base stations can determine that the terminal user unit has a normal wideband access relationship by sharing the terminal user unit registration information, and determine that the terminal user unit supports the WLAN service mode and can receive services through WLAN, which helps to improve the service reliability of the wideband intercom service or the wide-narrowband integrated intercom service.

[0205] In one or more embodiments provided in the present application, the method can further include:

[0206] In step S104, if the terminal heartbeat message of the registered terminal is not received within the first preset time period, the registration information of the registered terminal is modified to represent that the wideband access relationship between the registered terminal and the first narrowband base station is in a disconnected state.

[0207] The first preset time period is a preset time period after the first narrowband base station determines that the wideband access relationship between the terminal and the base station is in a normal state. In one possible implementation, the first preset time period is a first preset time period after the first narrowband base station sends a registration success response message to the registered terminal, or a second preset time period after the first narrowband base station receives a heartbeat message sent by the registered terminal. Optionally, the first preset time period and the second preset time period can be greater than a terminal heartbeat interval length specified by a terminal heartbeat interval timer on the requesting terminal. For example, the first preset time period (or the second preset time period) can be set based on n1 times of the terminal heartbeat interval length, such as n1 times of the terminal heartbeat interval length < the first preset time period (or the second preset time period) < (n1+1) times of the terminal heartbeat interval length. If the first narrowband base station does not receive a terminal heartbeat message of the requesting terminal in the first preset time period, it means that the first narrowband base station does not detect the heartbeat of the requesting terminal for n1 times, and the first narrowband base station loses connection with the requesting terminal. Optionally, n1 can be an integer in a range from 2 to 5. Based on this, the situation that the terminal loses wideband connection with the narrowband base station can be learned and determined in a timely manner, and the possibility of misjudgment caused by accidental factors can be reduced.

[0208] It should be noted that the modification of the registration information of the requesting terminal can refer to updating the wideband access relationship state information of the requesting terminal, which indicates the state of the wideband access relationship between the terminal user unit and the narrowband base station to which the terminal user unit is registered. In addition, the modification includes local modification and synchronization of the modification to the remaining narrowband base stations. For example, when the first narrowband base station is a master base station, the first narrowband base station can distribute the modified information to each slave base station; when the first narrowband base station is a slave base station, the first narrowband base station can upload the modified information to the master base station for distribution to each slave base station by the master base station.

[0209] Based on the above scheme, the narrowband base station can learn, through the terminal heartbeat, that the terminal user unit registered to the base station loses connection with the base station, and modify the registration information of the terminal user unit whose wideband access relationship is disconnected, so that the remaining narrowband base stations can determine, based on the shared registration information, that the terminal user unit does not support the WLAN service mode and cannot receive services through the WLAN, thereby reducing the possibility of issuing WLAN services to the disconnected terminal, to ensure the reliability of the communication intercom service.

[0210] In one or more embodiments provided in the present application, the method can further include:

[0211] In step S105, when the de-registration request of the registered terminal is received, the registration information of the registered terminal is modified to indicate that the wideband access relationship between the registered terminal and the first narrowband base station is in a disconnected state.

[0212] The registered terminal is a terminal user unit successfully registered to the first narrowband base station, and the deregistration request is a WLAN message sent by the registered terminal when the registered terminal intends to actively disconnect the normal wideband access relationship with the first narrowband base station.

[0213] For example, the situation in which the terminal user unit intends to actively disconnect the wideband access relationship can include turning off the terminal user unit (such as manual turning off by a user or automatic turning off due to power consumption), turning off a WLAN switch of the terminal user unit, turning off a WLAN service mode switch of the terminal user unit, or receiving a remote kill instruction. In any scenario in which the terminal user unit intends to actively disconnect the wideband access relationship, the terminal user unit first performs a WLAN deregistration process, and then performs corresponding operations, such as turning off, turning off the WLAN switch, turning off the WLAN service mode switch, or processing the remote kill instruction.

[0214] The embodiment timely learns the situation in which the terminal user unit intends to actively disconnect the wideband access relationship through the deregistration request of the terminal user unit, and performs a deregistration response and modifies registration information, so that the narrowband base stations in the system can timely determine the disconnection of the terminal based on the shared registration information, to improve communication reliability.

[0215] On the basis of the steps S104 and / or S105, the method can further include:

[0216] In step S106, if a terminal registration request of the disconnected terminal is not received within the second preset time period, the registration information of the disconnected terminal is removed, to indicate that the wideband access relationship between the disconnected terminal and the first narrowband base station no longer exists.

[0217] The disconnected terminal is the registered terminal whose wideband access relationship with the first narrowband base station is disconnected, and the second preset time period is a time period of a third preset time length after the first narrowband base station determines that the wideband access relationship between the first narrowband base station and the request terminal registered to the first narrowband base station is disconnected.

[0218] In a possible implementation, after determining that the wideband access relationship between the request terminal registered to the first narrowband base station and the first narrowband base station is disconnected, the first narrowband base station starts an information removal timer to monitor the registration state of the request terminal. If the information removal timer times out and a terminal registration request of the terminal is not acquired, the registration information of the terminal is removed, to indicate that the terminal is no longer a terminal user unit registered to the first narrowband base station, and the wideband access relationship between the terminal and the first narrowband base station no longer exists.

[0219] In addition, the removal of the registration information can include removing the local information and synchronizing to the rest of the narrowband base stations, i.e., removing the registration information of the terminal in the shared access management table. For example, the first narrowband base station can send a request for removing the registration information of the disconnected terminal to the master base station, so that the master base station updates the access management table distributed to each slave base station.

[0220] Based on the above scheme, when the narrowband base station modifies the registration information of the terminal user unit and meets certain conditions, it determines that the terminal is no longer a terminal user unit registered to the server, and releases the resources to release the registration of the terminal to the narrowband base station. By removing the registration information of the terminal user unit disconnected from the wideband access, the application reduces the useless occupation of the narrowband base station by the terminal user unit disconnected from the narrowband base station, such as the useless occupation of the number of terminal registrations of the narrowband base station, thereby improving the utilization rate of the narrowband base station to a certain extent. By removing the registration information of the disconnected terminal in a delayed manner, the terminal identity information does not need to be carried in the re-registration request in the scenario where the disconnected terminal immediately re-registers after disconnection, thereby providing a basis for reducing the transmission consumption between the terminal and the base station. In another implementation, the narrowband base station can also directly determine that the terminal is no longer a terminal user unit registered to the base station after modifying the registration information, and remove the information.

[0221] In one or more embodiments provided by the application, the method can further include:

[0222] In step S107, when the base station heartbeat sending condition is met, a base station heartbeat message is sent through an AP connected to the first narrowband base station.

[0223] The base station heartbeat message is a WLAN message sent to a registered terminal in a normal wideband access relationship with the first narrowband base station, and is used for the registered terminal to determine that the wideband access relationship with the first narrowband base station is normal. The registered terminal is a terminal user unit successfully registered to the first narrowband base station.

[0224] The base station heartbeat sending condition can include a base station heartbeat sending time specified by a base station heartbeat sending period at a current time. For example, a base station heartbeat interval timer can be started after the first narrowband base station is powered on and sends a registration success response message for the first time, and the base station heartbeat interval timer can restart timing after timing out, so as to achieve the purpose of periodically sending the base station heartbeat message. Based on this, the first narrowband base station meeting the base station heartbeat sending condition can include the base station heartbeat interval timer on the first narrowband base station timing out.

[0225] In another possible implementation, the first narrowband base station can perform the following actions on each terminal user unit registered to the base station: after determining that the terminal is successfully registered to the base station, enable the base station heartbeat interval timer corresponding to the terminal to periodically send a base station heartbeat message to the terminal, and restart the base station heartbeat interval timer corresponding to the terminal after the base station heartbeat interval timer expires; and after the terminal disconnects the wideband access relationship with the base station, disable the base station heartbeat interval timer corresponding to the terminal.

[0226] That is, different terminal user units can correspond to different base station heartbeat interval timers, or share the same base station heartbeat interval timer, when the first narrowband base station sends a base station heartbeat message to the terminal user units registered to the base station.

[0227] In one or more embodiments provided in the present application, the step S107 of sending a base station heartbeat message through the AP connected to the first narrowband base station can include:

[0228] sending a base station heartbeat message carrying IP address information of the alternative server of the first narrowband base station through the AP connected to the first narrowband base station.

[0229] The IP address information of the alternative server of the first narrowband base station is used for the registered terminal to configure alternative server information, and to request registration from a narrowband base station matching the alternative server information when the first narrowband base station is unavailable; the alternative server of the first narrowband base station is a narrowband base station different from the first narrowband base station and supporting registration of the registered terminal. It should be noted that the foregoing configuration includes both initial recording and updating recording, such as updating the alternative server information configured based on the registration success response message.

[0230] On the basis of the foregoing, when the information carried in the registration success response message includes the IP address information of the alternative server of the first narrowband base station, the base station heartbeat sending condition can include:

[0231] the current time is the base station heartbeat sending time specified by the base station heartbeat sending period; or,

[0232] the alternative server of the first narrowband base station changes.

[0233] It should be noted that if the network state of the first narrowband base station candidate server (denoted as the first candidate server) is abnormal, or the number of terminals registered to the first candidate server reaches the preset upper limit of the registration number, or the AP associated with the registered terminal does not belong to the AP connected by the first candidate server, the candidate server no longer supports the registration of the registered terminal, that is, the terminal user unit registered to the first narrowband base station cannot be registered to the candidate server when the first narrowband base station is unavailable, and the disaster recovery backup requirement of the BS server cannot be met. In this case, the candidate server of the first narrowband base station can be re-determined, that is, the available candidate server is selected from the remaining narrowband base stations after shielding the failed server, and then the IP address information of the candidate server of the first narrowband base station is changed. The first narrowband base station actively sends a base station heartbeat message carrying the IP address information of the new candidate server of the first narrowband base station to the terminal user unit registered to the base station, so as to update the candidate server information recorded by the terminal user unit registered to the first narrowband base station, thereby reducing the possibility of failure of the terminal user unit registered to the candidate server. It should be noted that even if the original candidate server still supports registration, the candidate server of the narrowband base station can be adjusted to achieve the purpose of balancing the load.

[0234] Based on the above scheme, the narrowband base station can send a base station heartbeat message to the terminal user unit in a normal wideband access relationship with the base station when the base station heartbeat sending condition is met, so that the registered terminal user unit can know the wideband access situation between the terminal and the corresponding narrowband base station. For example, based on the received base station heartbeat message, it is determined that the wideband access relationship is normal, that is, the terminal supports the WLAN service mode and can send WLAN service; correspondingly, it can also be determined that the connection is abnormal based on the fact that the base station heartbeat message is not received.

[0235] In the case where the registered terminal does not obtain the base station heartbeat message of the first narrowband base station within a third preset time period, the wideband access relationship between the registered terminal and the first narrowband base station is disconnected.

[0236] The third preset time period is a preset time period after the registered terminal determines that the wideband access relationship between the terminal and the first narrowband base station is normal. In one possible implementation, the third preset time period is a fourth preset time period after the registered terminal receives a registration success response message sent by the first narrowband base station, or a fifth preset time period after the registered terminal receives a base station heartbeat message sent by the first narrowband base station. Optionally, the fourth preset time period and the fifth preset time period can be greater than a base station heartbeat interval time length specified by a base station heartbeat interval timer on the first narrowband base station. Optionally, the fourth preset time period and the fifth preset time period can be greater than a base station heartbeat interval time length specified by a base station heartbeat interval timer on the first narrowband base station. For example, the fourth preset time period (or the fifth preset time period) can be set based on n2 times of the base station heartbeat interval time length, for example, n2 times of the base station heartbeat interval time length < the fourth preset time period (or the fifth preset time period) < (n2+1) times of the base station heartbeat interval time length. If the request terminal does not receive the base station heartbeat message of the first narrowband base station within the third preset time period, it can be determined that the request terminal has not detected the heartbeat of the first narrowband base station for n2 times, and the request terminal has lost the connection with the first narrowband base station, and the possibility of the request terminal being unable to perform the WLAN transceiving service is high. Optionally, n2 can be an integer in a range from 2 to 5, so as to know and determine the disconnection of the terminal and the narrowband base station in time, and reduce the possibility of misjudgment caused by accidental factors.

[0237] Based on the above, the registered terminal user unit can actively or passively lose the registration connection with the registered narrowband base station, and can no longer support the WLAN service mode. In this case, the terminal user unit that loses the registration connection with the narrowband base station can re-register to meet the WLAN service demand of the terminal. The re-registration process can be referred to the description above.

[0238] The communication system involved in the present application can have or not have a central server, and the central server is used for centralized interaction with each terminal in the system. In different scenarios, the narrowband base station responding to the terminal registration request can be part or all of the servers in the system. Specifically, in the case where the first converged communication site and each remaining site are interconnected through a TCP / IP network between sites to form a centralized cluster system with a central server, the first narrowband base station is the central server in the system. Alternatively, in the case where the first converged communication site and each remaining site are interconnected through a TCP / IP network between sites to form a distributed cluster system or a transit system without a central server, the first narrowband base station is any narrowband base station in the system. The following will be described in turn.

[0239] In the centralized cluster system, the WLAN registration can adopt the centralized registration mode, i.e. the first narrowband base station responding to the terminal registration request is the central server in the system. In this case, a wireless access point AP connected with the central server can be arranged in each site. The preset server information configured by the terminal user unit in the writing frequency matches the central server, i.e. each terminal user unit integrated with the WLAN module / chip detects the WLAN switch and the WLAN service mode switch after the first start or switching to a new site / channel, and initiates a registration request to the IP address of the central server through the WLAN hotspot after detecting that the WLAN switch is on and the WLAN service mode is on, and the central server responds to the registration. Optionally, a backup server of the central server, such as a secondary central server, can be configured in this case to improve the availability of the communication system.

[0240] In addition, after the terminal user unit is successfully registered, the central server and the terminal user unit successfully registered can establish a heartbeat connection through the in-site AP, such as a bidirectional heartbeat connection, i.e. the terminal user unit successfully registered can periodically send terminal heartbeat information to the central server through the wireless access point AP, and the central server can periodically broadcast the base station heartbeat message to the terminal user unit successfully registered through the wireless access point AP to maintain the wideband access relationship between the terminal and the base station.

[0241] In the distributed cluster system or the relay system, the WLAN registration can adopt the distributed registration mode, and the WLAN service processing can also adopt the distributed processing mode, thereby realizing load balancing and avoiding the situation that the load of a single channel / site is too high, thereby providing a basis for improving the processing capacity of the entire system.

[0242] Specifically, the narrowband base station connected to the AP in the system can be used as a registration server, i.e., the first narrowband base station responding to the terminal registration request can be any registration server in the system. Based on this, when the system includes multiple registration servers, the preset server information configured by different terminal user units when writing the frequency can not be completely the same. In one possible implementation, the preset server information configured by the terminal user unit supporting WLAN communication when writing the frequency can be matched with the BS server corresponding to the Radio ID range or the Group ID range to which the terminal user unit belongs, i.e., when the base station writes the frequency configuration, the terminal user unit can be configured to different registration servers for registration according to the Radio ID range or the Group ID range distribution, for example, the preset server information can be the information of the registration server corresponding to the station ID of the terminal user unit. Based on this, the terminal user units in the system can be more evenly distributed to different registration servers for registration, and the terminal user unit MS tries to register on the preset server first. In addition, multiple terminal user units in the system can be supported to register at the same time, achieving the purpose of balancing the system registration load. In another possible implementation, the preset server information configured by the terminal user unit supporting WLAN communication when writing the frequency can be matched with the main base station in the system, and the IP address of the main base station can be a static IP address. On this basis, the main base station can feed back different redirection registration server information to different terminals requesting registration, so that different terminals register with different redirection registration servers, achieving the purpose of balancing the network load.

[0243] On the basis described above, the WLAN service flow can be distributed to different registration servers through a listening rule, thereby achieving network load balancing and achieving the purpose of efficient use of wireless channel resources.

[0244] In the communication system involved in the present application, a single-site converged interworking network can support terminals to perform communication services within a single site. Specifically, a terminal user unit can establish narrowband communication through a narrowband, a terminal user unit supporting a WLAN service mode can establish WLAN communication through a WLAN path, and a terminal user unit supporting a narrowband service mode and a terminal user unit supporting a WLAN service mode can establish converged communication through a wide and narrow band network. On this basis, in a communication system including multiple sites, a multi-site converged interworking network can support terminal roaming, wide-area calling, cross-site communication, and primary site backup.

[0245] Similarly, in the communication system with the control center, the control center and the APs in each narrowband site can be interconnected through the TCP / IP network, and based on this, the IP address information of the control center can be configured as the preset server information of each terminal, i.e., each terminal collectively requests registration to the control center, and the control center performs registration response. The specific response process can refer to the center server described above. On this basis, the control center has the registration information of the terminals in each site, and the terminals supporting WLAN communication can access the control center in a broadband manner to perform broadband communication, such as initiating or receiving WLAN services.

[0246] Next, from the perspective of the terminal user unit, the service communication method based on the converged communication site provided in the present application is described. The service communication method based on the converged communication site applied to the terminal user unit described below can be mutually corresponding and referred to the service communication method based on the converged communication site applied to the narrowband base station described above.

[0247] The service communication method based on the converged communication site provided in the present application can be applied to the first terminal user unit.

[0248] It should be noted that the first terminal user unit described above can be a terminal user unit that does not support WLAN communication, such as a conventional narrowband intercom device, or a terminal integrated with a WLAN module / chip but with the WLAN switch turned off. The terminal user unit supporting narrowband communication but not supporting WLAN communication only supports communication services in the narrowband network mode when it is located within the coverage of the narrowband, and does not support WLAN services. The first terminal user unit described above can also be a terminal user unit supporting WLAN communication, such as a terminal user unit integrated with a WLAN module / chip and with the WLAN switch and WLAN service mode switch turned on. The terminal user unit supporting WLAN communication supports narrowband and WLAN dual-network modes when it is located within the coverage of the narrowband network and the coverage of the WLAN network, and can access the narrowband network and the WLAN network simultaneously to support communication services in both network modes. The terminal user unit supporting WLAN communication only supports communication services in the WLAN network mode when it is located within the coverage of the WLAN network.

[0249] On the basis described above, the method can include:

[0250] Step S501, in the case of currently supporting WLAN communication and not accessing any narrowband base station in a broadband manner, sending a terminal registration request to a target registration server through an associated AP.

[0251] The terminal registration request is used to request registration to the target registration server, so that the target registration server performs registration access control on the first terminal user unit.

[0252] In step S502, in the case of accessing to the first narrowband base station through a broadband mode, in response to a service sending requirement, a first WLAN service carrying receiving terminal information is sent to the first narrowband base station through the associated AP, so that the first narrowband base station determines the receiving terminal of the first WLAN service and performs service forwarding based on the receiving terminal.

[0253] The first narrowband base station is located in a first converged communication site, and the first narrowband base station is pre-configured to be connected with a WLAN access point (AP) through a TCP / IP network.

[0254] Similarly, the method can also include: in the case of staying in a third narrowband base station supporting a narrowband service mode, in response to a service sending requirement, a first narrowband service carrying receiving terminal information is sent through a narrowband air interface, so that the third narrowband base station determines the receiving terminal of the first narrowband service and performs service forwarding based on the receiving terminal.

[0255] The narrowband service mode refers to a service mode of transmitting narrowband network protocol data through a narrowband network. Specifically, in the case that the first terminal user unit supports the narrowband service mode and the WLAN service mode, the first terminal user unit can send services in at least one mode when it needs to send services.

[0256] It should be noted that the narrowband base station receiving the first narrowband service can be a conventional narrowband base station or an improved narrowband base station, such as the registration server described in the present application. The process of the narrowband base station for transmitting and processing the received narrowband service can refer to the existing processing mode, and the process of the registration server for transmitting and processing the received narrowband service can refer to the description above, which will not be described here.

[0257] Through the above scheme, the terminal user unit supporting WLAN communication realizes the support of the WLAN service mode through the normal broadband access relationship between the terminal user unit and the narrowband base station after accessing to the narrowband base station through a broadband mode. On this basis, if the narrowband resource is limited or unavailable, the terminal user unit supporting the WLAN service mode located in the WLAN communication range provided by the AP connected to the successfully registered narrowband base station can establish communication with the devices under the WLAN / narrowband network, such as maintaining communication with team members under the WLAN / narrowband network, by using the WLAN network and the narrowband base station.

[0258] On the basis of the above, the method can further include:

[0259] Step S503, receiving a communication service.

[0260] In one or more embodiments provided in the present application, the step S503 of receiving a communication service can include:

[0261] In the case of accessing the first narrowband base station through a wideband mode, receiving a second WLAN service issued by the first narrowband base station through the associated AP; and / or,

[0262] In the case of accessing the third narrowband base station through a narrowband mode, receiving a second narrowband service issued by the third narrowband base station through a narrowband air interface.

[0263] The second WLAN service is a service issued by the first narrowband base station in a WLAN service mode when the first narrowband base station receives a service with the first terminal user unit as a receiving terminal and determines that the first terminal user unit and the first narrowband base station satisfy a WLAN communication relationship, and the WLAN service mode includes transmitting WLAN network protocol data through a WLAN network.

[0264] The second narrowband service is a narrowband service issued by the third narrowband base station in a narrowband service mode when the third narrowband base station receives a service with the first terminal user unit as a receiving terminal and determines that the first terminal user unit and the third narrowband base station satisfy a narrowband communication relationship, the third narrowband base station is a narrowband base station in a stay site of the first terminal user unit, and the narrowband service mode includes transmitting narrowband network protocol data through a narrowband network.

[0265] Optionally, the service received by the first narrowband base station or the third narrowband base station with the first terminal user unit as a receiving terminal is a service directly received from a sending terminal through a TCP / IP network or a narrowband air interface, or a service forwarded by another narrowband base station through an inter-site TCP / IP network.

[0266] Based on the above, a terminal user unit in a narrowband network or a WLAN network can receive a narrowband service or a WLAN service through a narrowband base station in a narrowband stay site or a narrowband base station connected with an AP to which the terminal user unit is registered, such as establishing an intra-site communication with a member of the site through a narrowband or a WLAN network, or establishing a cross-site communication with a member of another site through a TCP / IP network, to finally implement a communication intercom task.

[0267] The registration and access process of the first terminal user unit is exemplarily described below.

[0268] In one or more embodiments provided in the present application, the step S502 of sending the terminal registration request to the target registration server through the associated AP can include the following steps:

[0269] The step S601 includes configuring a terminal registration request based on the IP address information of the first terminal user unit and the IP address information of the target registration server, and the terminal identity information of the first terminal user unit.

[0270] The step S602 includes sending the terminal registration request to the target registration server through the associated AP.

[0271] The process of the target registration server responding to the terminal registration request can refer to the process of the first narrowband base station performing registration access control on the requesting terminal, which will not be described here.

[0272] On the basis of the above, after sending the terminal registration request, the following steps can be further included:

[0273] The step S603 includes determining that the first terminal user unit has been successfully registered to the target registration server and establishing a WLAN path between the first terminal user unit and the target registration server in the case that a registration success response message of the target registration server is received through the associated AP.

[0274] The registration success response message is a registration response message sent by the target registration server when a pre-configured registration success condition is met. The registration success condition is configured as a first success condition or a second success condition. The first success condition includes that the current narrowband base station supports the registration of the requesting terminal. The second success condition includes that the current narrowband base station supports the registration of the requesting terminal and the current narrowband base station is a narrowband base station within the stay site of the requesting terminal, or the current narrowband base station supports the registration of the requesting terminal and a narrowband base station within the stay site of the requesting terminal does not support the registration of the requesting terminal. The registration information of the first terminal user unit configured by the target registration server after determining that the registration success condition is met is used to represent that the first terminal user unit has accessed to the target registration server through a wideband mode. In the case that the registration success response message is received, the target registration server is the first narrowband base station.

[0275] Through the WLAN path established between the first terminal user unit and the narrowband base station to which the first terminal user unit is registered after determining that the terminal registration is successful, the first terminal user unit can initiate a communication intercom service in a WLAN service mode, transmit the communication intercom service to a corresponding receiving terminal through the forwarding processing of the first narrowband base station, and finally realize a wideband communication intercom service or a wide-narrowband converged communication intercom service.

[0276] In one or more embodiments provided in the present application, after sending the terminal registration request, the method further comprises:

[0277] Step S604, in the case that the first terminal user unit receives the registration failure response message from the target registration server through the associated AP, waiting and performing registration retry after waiting.

[0278] The registration failure response message is a registration response message sent by the target registration server in the case that the registration failure condition is met; the registration failure condition comprises that the target registration server and each remaining narrowband base station interconnected through the TCP / IP network do not support the registration of the first terminal user unit.

[0279] On the basis of the above, the first terminal user unit can determine that the current system does not support registration based on the registration failure response message. In this case, even if the first terminal user unit requests registration to other narrowband base stations, it cannot be successfully registered, that is, the first terminal user unit can temporarily stop registration retry in response to the registration failure response message, reducing the possibility of meaningless registration response of the narrowband base station. Illustratively, the terminal user unit receiving the registration failure response message can perform registration again after waiting for a period of time to reduce the system processing pressure caused by frequent registration retry of the terminal user unit.

[0280] In one or more embodiments provided in the present application, after sending the terminal registration request, the method further comprises:

[0281] Step S605, in the case that the first terminal user unit receives the redirection registration response message from the target registration server through the associated AP, determining the redirection registration server according to the IP address information of the redirection registration server carried in the redirection registration response message, updating the target registration server to the redirection registration server, and returning to the step of sending the terminal registration request to the target registration server through the associated AP.

[0282] The redirection registration response message is a registration response message sent by the target registration server in the case that the registration success condition is not met and there is a remaining narrowband base station supporting the registration of the first terminal user unit. The redirection registration server is one of the remaining narrowband base stations supporting the registration of the first terminal user unit.

[0283] It should be noted that the redirection registration response message can be used to indicate that the narrowband base station to which the registration is requested does not meet the successful registration condition, such as the narrowband base station in the stay site of the requesting terminal supporting the registration. For example, when the narrowband base station to which the registration is requested by the requesting terminal is different from the narrowband base station in the stay site of the requesting terminal, and both of the base stations support the registration, it can be considered that the narrowband base station to which the registration is requested by the requesting terminal does not meet the successful registration condition. In this case, the narrowband base station in the stay site can be selected as the redirection registration server, so that the requesting terminal is redirected to the narrowband base station in the stay site for registration.

[0284] By carrying the redirection registration response message with the redirection registration server information, the terminal user unit can directly determine the redirection registration server supporting the registration of the terminal, and perform the redirection registration. Compared with the scheme without providing the redirection registration server information, the scheme does not need to pre-configure the IP address information of each narrowband base station to the terminal user unit, reduces the registration retry times of the terminal user unit, and improves the registration access efficiency of the terminal user unit.

[0285] Optionally, when the narrowband base station in the stay site of the first terminal user unit supports the registration of the requesting terminal, the redirection registration server is the narrowband base station in the stay site; and when the narrowband base station in the stay site does not support the registration of the requesting terminal, the redirection registration server is the alternative server of the first narrowband base station, that is, the narrowband base station supporting the registration of the requesting terminal.

[0286] Based on the above, the possibility of the terminal user unit registering to the narrowband base station in the stay site can be increased, and accordingly the possibility of cross-site communication between the AP and the narrowband base station respectively belonging to different sites can be reduced, thereby providing a basis for improving the WLAN message processing efficiency.

[0287] The above step S502 of sending the terminal registration request to the target registration server through the associated AP can include the following steps:

[0288] In step S701, when the first terminal user unit has successfully registered to the original narrowband base station, the terminal registration request is configured based on the IP address information of the first terminal user unit and the IP address information of the target registration server, and identification information indicating that the message is a re-registration request.

[0289] The original narrowband base station can be any narrowband base station to which the first terminal user unit has successfully registered. Optionally, to reduce the storage pressure of the terminal and improve the access possibility of the terminal, the original narrowband base station can be the last narrowband base station to which the first terminal user unit has successfully registered. In this case, the first terminal user unit can be referred to as a re-registration terminal, and the re-registration request can not carry the identity information of the first terminal user unit requesting registration.

[0290] Step S702: sending the terminal registration request to the target registration server through the associated AP.

[0291] In a possible implementation, after sending the terminal registration request, the method further includes:

[0292] Step S703: in the case where a registration success response message of the first terminal user unit is received through the associated AP, it is determined that the first terminal user unit has successfully registered to the target registration server, and a WLAN channel between the first terminal user unit and the target registration server is established.

[0293] The registration success response message is a registration response message sent by the target registration server in the case where it is determined that the terminal registration request is a re-registration request and the registration information of the first terminal user unit is found from the target registration server and each remaining narrowband base station interconnected through a TCP / IP network. The aforementioned registration information is information configured based on the terminal registration request sent by the first terminal user unit in the case where the narrowband base station to which the first terminal user unit has successfully registered before determines that the registration success condition is met in response to the terminal registration request sent by the first terminal user unit before, and is used to represent the wideband access condition of the first terminal user unit. When the target registration server is not the narrowband base station to which the first terminal user unit has successfully registered before, the information can be obtained by searching an access management table.

[0294] In a possible implementation, after sending the terminal registration request, the method further includes:

[0295] Step S704: in the case where an identity information reporting request is received through the associated AP, sending the terminal identity information of the first terminal user unit to the target registration server through the associated AP, so that the target registration server performs registration access control according to the terminal identity information of the first terminal user unit.

[0296] The identity information reporting request is a WLAN message sent by the target registration server when the target registration server receives the terminal registration request and does not find the registration information of the first terminal user unit from the target registration server and each remaining narrowband base station connected through a TCP / IP network.

[0297] Optionally, the process of the target registration server responding to the re-registration request can refer to the above description.

[0298] By the above scheme, the registration information of the terminal user unit when the registration is successful before is multiplexed, and the data transmission amount of the terminal user unit when re-registering is reduced to a certain extent.

[0299] In one or more embodiments provided in the present application, the target registration server can include:

[0300] a narrowband base station matching preset server information configured when the first terminal user unit writes frequency; or

[0301] a narrowband base station matching IP address information of a redirection registration server carried in a redirection registration response message received by the first terminal user unit; or

[0302] an original narrowband base station where the first terminal user unit successfully registers last time; or

[0303] a narrowband base station matching alternative server information configured by the first terminal user unit.

[0304] The redirection registration response message received by the first terminal user unit is a registration response message sent by a narrowband base station where the first terminal user unit registers before, in response to a terminal registration request sent when the first terminal user unit registers before, in the case that a registration success condition is not met and there is a remaining narrowband base station supporting registration of the first terminal user unit; and the redirection registration server is a narrowband base station supporting registration of the first terminal user unit.

[0305] The alternative server information is information configured by the first terminal user unit based on a WLAN message (such as a registration success response message, etc.) carrying IP address information of an alternative server of the original narrowband base station sent by the original narrowband base station after successfully registering to the original narrowband base station, and the alternative server of the original narrowband base station is a narrowband base station different from the original narrowband base station and supporting registration of the first terminal user unit.

[0306] Based on the above, the end user unit can determine the preset server as the target registration server after first starting or switching to a new channel / site, perform steps S601-S602, and then perform any of steps S603-605 according to the registration response message fed back by the target registration server (i.e., the preset server) of the current request; in particular, the end user unit can determine the redirected registration service as the target registration server after receiving the redirected registration response message carrying the redirected registration server information, perform steps S601-S602, and then perform any of steps S603-605 according to the registration response message fed back by the target registration server (i.e., the redirected registration server) of the current request, until successfully registered to the BS server. When the end user unit re-registers, the above process can be reused, or any of the original narrowband base station, the alternative server of the original narrowband base station, and the preset server can be determined as the target registration server, steps S701-S702 are performed, and then subsequent steps are performed according to the message fed back by the target registration server of the current request, such as a registration success response message or an identity information reporting request.

[0307] The single registration process is described above. To avoid interference of accidental network factors and ensure registration access efficiency, in one or more embodiments provided in the present application, after sending a terminal registration request to the target registration server through the associated AP, the following can also be included:

[0308] If the first end user unit does not receive a registration response message from the target registration server within a timeout, and the number of retransmissions of the current request does not exceed the preset maximum number of retransmissions, the registration request is retransmitted.

[0309] Optionally, the first end user unit can start a response waiting timer after sending a terminal registration request to the target registration server through the associated AP to monitor the registration response of the target registration server to the first end user unit. If the response waiting timer times out, it indicates that the first end user unit has not received a registration response message, and the registration request is retransmitted if the number of retransmissions does not exceed the preset maximum number of retransmissions, otherwise it indicates that a registration response message has been received before the response waiting timer times out, and the first end user unit performs the corresponding steps according to the received registration response message.

[0310] In particular, if the number of retransmissions exceeds the preset maximum number of retransmissions, the first end user unit can determine that registration to the target registration server has failed, and can standby for a period of time before attempting registration.

[0311] By the above scheme, the end user unit can retransmit the registration request for a limited number of times when the registration response message is not received within a timeout period, so as to avoid the situation that the end user unit cannot register to the target registration server and cannot perform WLAN service due to accidental factors, and by setting the maximum retransmission number, the system resources can be saved to a certain extent.

[0312] Next, the heartbeat interconnection process between the first end user unit and the first narrowband base station to which the first end user unit registers is exemplarily described.

[0313] In one or more embodiments provided in the present application, in the case of accessing the first narrowband base station in a broadband manner, the following can also be included:

[0314] In step S504, the state of the broadband access relationship between the first end user unit and the first narrowband base station is managed.

[0315] In one or more embodiments provided in the present application, the step S504 of managing the state of the broadband access relationship between the first end user unit and the first narrowband base station can include:

[0316] In step S801, a terminal heartbeat message is periodically sent to the first narrowband base station through the associated AP, so that the first narrowband base station determines that the broadband access relationship between the first narrowband base station and the first end user unit is normal; and / or,

[0317] In step S802, when the difference between the current terminal information of the first end user unit and the terminal information when the terminal heartbeat message was last sent exceeds a preset limit, the terminal heartbeat message is sent to the first narrowband base station through the associated AP.

[0318] Optionally, after the first end user unit determines that it has successfully registered to the first narrowband base station, a terminal heartbeat interval timer can be started, which restarts timing after a timeout to implement a periodic timing task; and then after the terminal heartbeat interval timer times out, the terminal heartbeat message is sent, so that the first narrowband base station determines that the broadband access relationship between the base station and the first end user unit is normal.

[0319] It should be noted that after the first end user unit successfully registers to a narrowband base station, the AP associated with the first end user unit is related to the actual location of the first end user unit, and during the process of maintaining the heartbeat connection with the first narrowband base station, the AP associated with the first end user unit can change.

[0320] In addition, the terminal heartbeat message sent by the first end user unit can carry terminal information of the terminal, such as identity information, state information, etc., which is not limited by the present application.

[0321] On the basis of the above, if the first narrowband base station does not acquire the terminal heartbeat message of the first terminal user unit in the first preset time period, the first narrowband base station will modify the registration information of the first terminal user unit, and the modified information indicates that the wideband access relationship between the first terminal user unit and the first narrowband base station is in a disconnected state.

[0322] In one or more embodiments provided in the present application, the step S504 of managing the state of the wideband access relationship between the first terminal user unit and the first narrowband base station can include:

[0323] When it is desired to actively disconnect the wideband access relationship with the first narrowband base station, a deregistration request is sent to the first narrowband base station through the associated AP.

[0324] The deregistration request is used to instruct the first narrowband base station to modify the registration information of the first terminal user unit to indicate that the wideband access relationship between the first narrowband base station and the first terminal user unit is in a disconnected state. The process of the first narrowband base station responding to the deregistration request can be referred to the description above.

[0325] In one or more embodiments provided in the present application, the step S504 of managing the state of the wideband access relationship between the first terminal user unit and the first narrowband base station can include:

[0326] Step S901, in the case of receiving the base station heartbeat message of the first narrowband base station through the associated AP, it is determined that the wideband access relationship between the first terminal user unit and the first narrowband base station is in a normal state.

[0327] The base station heartbeat message is a WLAN message sent by the first narrowband base station to the terminal user unit with a normal wideband access relationship with the first narrowband base station when the base station heartbeat sending condition is met. The base station heartbeat sending condition can include that the current time is the base station heartbeat sending time specified by the base station heartbeat sending period.

[0328] Optionally, in the case that the base station heartbeat message carries the IP address information of the alternative server of the first narrowband base station, the base station heartbeat sending condition further includes that the alternative server of the first narrowband base station is changed; the alternative server of the first narrowband base station is a narrowband base station different from the first narrowband base station and supporting the registration of the first terminal user unit.

[0329] In one or more embodiments provided in the present application, the step S504 of performing state management on the wideband access relationship between the first terminal user unit and the first narrowband base station can further include:

[0330] In step S902, if the base station heartbeat message of the first narrowband base station is not acquired within a third preset time period, it is determined that the wideband access relationship between the terminal and the first narrowband base station is in a disconnected state.

[0331] The third preset time period can be a fourth preset time period after the first terminal user unit acquires the registration success response message of the first narrowband base station to the first terminal user unit, or a fifth preset time period after the first terminal user unit acquires the base station heartbeat message of the first narrowband base station. Optionally, the fourth preset time period and the fifth preset time period can be greater than the base station heartbeat interval time period.

[0332] It should be noted that the first terminal user unit not receiving the base station heartbeat message can correspond to the following cases: network state is abnormal, WLAN communication cannot be performed, or the first narrowband base station determines that the wideband access relationship between the first terminal user unit and the base station is in a disconnected state and does not send the base station heartbeat message to the first terminal user unit, etc.

[0333] Based on the above, the terminal user unit actively or passively disconnected from the registered narrowband base station can perform re-registration to re-access the system. In this case, the narrowband base station can perform registration judgment by querying the registration information of the terminal user unit registered to each narrowband base station configuration. If the query hits, it indicates that the registration is supported, and a registration success response message is fed back and the registration information of the terminal is configured. If the query does not hit, the registration judgment is performed based on the terminal information.

[0334] The WLAN registration scheme and service communication scheme of the terminal user unit provided in the present application will be described below in combination with a service scenario example.

[0335] Figure 7 A wide and narrow band integrated communication system networking schematic diagram is shown, as shown in Figure 7As shown, the narrowband base station BS1 and wireless access point AP1 in site 1 are interconnected with the narrowband base station BS2 and wireless access point AP2 in site 2 through a network; specifically, BS1 is set as Slave, i.e. as a slave base station, and DHCP (Dynamic Host Configuration Protocol) is enabled, and the IP address of BS1 is dynamically allocated by the Master base station in the system; BS2 is set as Master, i.e. as a master base station, and the IP address of BS2 is a static IP address. In addition, the terminal user units MS10 and MS11 in site 1 can communicate with BS1 through a narrowband air interface, and the terminal user unit MS12 supporting WLAN communication in site 1 can communicate with BS1 through WLAN; the terminal user units MS20 and MS21 in site 2 can communicate with BS2 through a narrowband air interface, and the terminal user unit MS22 supporting WLAN communication in site 2 can communicate with BS2 through WLAN. On this basis, the MS22 in site 2 initiates a registration request to the preset server (i.e. the master base station BS2) set by the frequency writer, and BS2 feeds back a registration success response message after registration judgment, and the MS22 is successfully registered in the preset server. After the MS12 in site 1 turns on the WLAN switch and the WLAN service mode switch, based on the preset server information (i.e. the IP address information of the preset server) set by the frequency writer, the MS12 initiates a registration request to the preset server (i.e. the master base station BS2), BS2 performs registration judgment, determines that the base station does not meet the registration success condition and the narrowband base station BS1 in the narrowband stay site (i.e. site 1) of the MS12 supports registration, sends a redirection registration response message carrying the IP address information of BS1 to the MS12, and notifies the MS12 to register with the redirection registration server BS1, the MS12 determines that the received registration response message is a redirection registration response message, and the IP address information of the redirection registration server is the IP address and port of BS1, and registers with BS1, BS1 feeds back registration success after registration judgment, and the MS12 successfully registered in BS1 keeps communication connection with BS1.

[0336] Figure 8 Another wide and narrow band fusion communication system networking schematic diagram is shown, which is combined with Figure 8As shown, the narrowband base station BS1 and the wireless access point AP1 in site 1 are interconnected with the narrowband base station BS2 and the wireless access point AP2 in site 2 through a network; the terminals MS10-MS13 are accessed to BS1, and the terminals MS20-MS23 are accessed to BS2. After the terminals are registered successfully, the terminals and the base stations can communicate through the narrowband network or the WLAN network. On the basis of the above, the MS10 in the narrowband communication range of BS1 can initiate the group call communication of the call group G1 through the narrowband network in site 1; the MS12 in site 1 can initiate the individual call communication of the call MS13 through the WLAN network when all the channels of the narrowband are busy; the MS13 in the WLAN communication range of AP1 (which can or can not be in the narrowband network coverage range of BS1) can receive the individual call through the WLAN network; the MS11 in the narrowband communication range of BS1 can initiate the group call communication of the call group G2 through the narrowband network in site 1. Since the group G2 is a cross-site group call, BS1 will forward the received G2 to BS2 in site 2 for processing. BS2 will issue the group call G2 to the MS21 through the narrowband air interface when it is determined that the MS21 participating in the call of the group G2 is in the narrowband network range of BS2 and supports the narrowband service mode. In addition, BS2 will convert the narrowband group call G2 into the WLAN group call G2 and issue it to the MS20 through the WLAN network channel when it is detected that the MS20 is not in the narrowband coverage range of site 2 but the MS20 is registered in the WLAN network and supports the WLAN service mode. Finally, the communication task between the MS11 in the narrowband network of site 1 and the MS20 in the WLAN network of site 2 of different network types is realized; the MS22 in site 2 can accept the background frequency writing operation through the WLAN network; the MS23 in site 2 can send the GPS position information to the dispatching station through the WLAN network, and so on.

[0337] In addition, the narrowband network can be fused with other network types, such as Bluetooth, cellular network, WiMax, etc. The wideband network access point connected with the narrowband base station is the access point of the corresponding network type; the wideband module / chip integrated on the terminal user unit is the module / chip of the corresponding network type; and the network channel between the terminal user unit and the access point is the network channel of the corresponding network type. The service communication scheme and the terminal registration and access scheme when the narrowband network is fused with at least one wideband network can be referred to the above description.

[0338] The service communication device provided by the embodiment of the present application is described below. The service communication device described below can be correspondingly referred to the service communication method based on the fused communication site described above. Specifically, the service communication device can include a narrowband base station and a terminal user unit.

[0339] Optionally, the hardware structure block diagram of the service communication device can be referred to Figure 9As shown, the hardware structure can include at least one processor 1, at least one communication interface 2, at least one memory 3 and at least one communication bus 4;

[0340] In the embodiments of the present application, the number of the processor 1, the communication interface 2, the memory 3 and the communication bus 4 is at least one, and the processor 1, the communication interface 2 and the memory 3 complete the communication with each other through the communication bus 4;

[0341] The processor 1 can be a central processing unit CPU, or an application specific integrated circuit ASIC, or one or more integrated circuits configured to implement the embodiments of the present application, etc.

[0342] The memory 3 can include a high-speed RAM memory, and can also include a non-volatile memory, etc., such as at least one disk memory.

[0343] The memory is configured to store a computer program, and the processor is configured to execute the computer program.

[0344] The various wide and narrow band converged communication devices will be described in turn.

[0345] The narrow band base station provided by the embodiments of the present application belongs to a converged communication site, the converged communication site further includes a terminal user unit, and the narrow band base station is pre-configured to be connected with an access point AP of a wireless local area network WLAN through a transmission control protocol / internet interconnection protocol TCP / IP network; the narrow band base station includes at least one processor and a memory connected with the processor, wherein: the memory is configured to store a computer program; and the processor is configured to execute the computer program, so that the narrow band base station can implement the service communication method based on the converged communication site applied to the narrow band base station according to any one of the preceding embodiments.

[0346] The terminal user unit provided by the embodiments of the present application includes at least one processor and a memory connected with the processor, wherein: the memory is configured to store a computer program; and the processor is configured to execute the computer program, so that the terminal user unit can implement the service communication method based on the converged communication site applied to the terminal user unit according to any one of the preceding embodiments.

[0347] The embodiment of the present application further provides a storage medium, which carries one or more computer programs, and when the one or more computer programs are executed by an electronic device, the electronic device can implement any one of the service communication methods based on a converged communication site applied to a narrowband base station provided by the embodiment of the present application, or implement any one of the service communication methods based on a converged communication site applied to a terminal user unit provided by the embodiment of the present application.

[0348] The embodiment of the present application further provides a computer program product, which comprises computer readable instructions, and when the computer readable instructions run on an electronic device, the electronic device can implement any one of the service communication methods based on a converged communication site applied to a narrowband base station provided by the embodiment of the present application, or implement any one of the service communication methods based on a converged communication site applied to a terminal user unit provided by the embodiment of the present application.

[0349] Finally, it needs to be explained that, in this document, the relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or sequence between the entities or operations; in some scenarios, the first entity and the second entity may correspond to the same. Moreover, the term "comprises", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitation, the element defined by the statement "comprises a" does not exclude the presence of another identical element in the process, method, article or device including the element.

[0350] The embodiments in the specification are described in a progressive manner, each embodiment focuses on the difference from other embodiments, and each embodiment can be combined as needed, and the same and similar parts refer to each other.

[0351] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to the embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A service communication method based on a converged communication site, characterized by, The application is applied to a first converged communication station, the first converged communication station comprises a terminal user unit and a first narrowband base station, the first narrowband base station is configured to be connected with an access point (AP) of a wireless local area network (WLAN) through a transmission control protocol / internet protocol (TCP / IP) network; The method is applied to the first narrowband base station, and the method comprises the following steps: Receiving through the TCP / IP network or a narrowband air interface; When receiving a terminal registration request, performing registration access control on a request terminal; the terminal registration request is a WLAN message sent by the request terminal to request to access the first narrowband base station in a wideband mode, and the request terminal is a terminal user unit which does not access any narrowband base station in a wideband mode at present; When receiving a narrowband service or a WLAN service, determining a receiving terminal of the received service, and forwarding the service based on the receiving terminal; the WLAN service at least comprises a WLAN service sent by a terminal user unit which accesses the first narrowband base station in a wideband mode.

2. The service communication method based on the fusion communication site according to claim 1, characterized by, The service forwarding based on the receiving terminal comprises the following steps: In a case that the first narrowband base station and the receiving terminal satisfy a narrowband communication relationship or satisfy a WLAN communication relationship, issuing a service received by the first narrowband base station in a target service mode; wherein the WLAN communication relationship comprises that the receiving terminal accesses the first narrowband base station in a wideband mode; the target service mode is one of two service modes which matches the satisfied communication relationship, and the two service modes comprise a narrowband service mode of transmitting narrowband network protocol data through a narrowband network and a WLAN service mode of transmitting WLAN network protocol data through a WLAN network.

3. The service communication method based on the converged communication site according to claim 2, characterized by, The service forwarding based on the receiving terminal further comprises the following steps: In a case that the first narrowband base station and the receiving terminal do not satisfy a narrowband communication relationship and do not satisfy a WLAN communication relationship, determining a second narrowband base station, the second narrowband base station is a narrowband base station which satisfies at least one communication relationship with the receiving terminal, and forwarding a service to the second narrowband base station, the forwarded service is a service received by the first narrowband base station which matches a service mode supported by the second narrowband base station, so that the second narrowband base station issues the service to the receiving terminal.

4. The service communication method based on the fusion communication site according to any one of claims 1 to 3, characterized by, The narrowband service received by the first narrowband base station comprises a service sent by a terminal user unit in the first converged communication station in a narrowband service mode, or a narrowband service forwarded to the first narrowband base station by a TCP / IP network between sites in response to a received service by a narrowband base station in another site; The WLAN service received by the first narrowband base station comprises a service sent by a terminal user unit which accesses the first narrowband base station in a wideband mode through any AP connected with the first narrowband base station in a WLAN service mode, or a WLAN service forwarded to the first narrowband base station by a TCP / IP network between sites in response to a received service by a narrowband base station in another converged communication station.

5. The service communication method based on the converged communication site according to claim 1, characterized by, The terminal registration request carries information including IP address information of the requesting terminal and the narrowband base station to which the requesting terminal requests to register, and terminal identity information of the requesting terminal; and the narrowband base station to which the requesting terminal requests to register is the first narrowband base station; The registration access control on the requesting terminal comprises: The terminal registration request is parsed to determine terminal identity information of the requesting terminal requesting registration; In a case where the first narrowband base station meets a pre-configured registration success condition, a registration success response message is sent to the requesting terminal through an AP connected to the first narrowband base station, and registration information of the requesting terminal is configured based on the terminal registration request for the remaining narrowband base stations to acquire; The registration success condition is configured as a first success condition or a second success condition, the first success condition includes that the narrowband base station supports the registration of the requesting terminal, and the second success condition includes that the narrowband base station supports the registration of the requesting terminal and is a narrowband base station within a stay site of the requesting terminal, or the narrowband base station supports the registration of the requesting terminal and a narrowband base station within the stay site of the requesting terminal does not support the registration of the requesting terminal. The registration success response message is used to indicate that the requesting terminal has successfully registered to the narrowband base station to which the registration is requested; and the configured registration information of the requesting terminal represents that the requesting terminal has accessed to the first narrowband base station in a wideband mode.

6. The service communication method based on the converged communication site according to claim 5, characterized by, The registration access control on the requesting terminal further comprises: In a case where the registration success condition is not met, one narrowband base station supporting the registration of the requesting terminal is determined from the remaining narrowband base stations interconnected with the first narrowband base station through a TCP / IP network as a redirection registration server, and a redirection registration response message is sent to the requesting terminal through the AP connected to the first narrowband base station; the redirection registration response message carries IP address information of the redirection registration server and is used to indicate that the requesting terminal requests to register to the redirection registration server.

7. The service communication method based on the fusion communication site according to claim 6, characterized by, The one narrowband base station supporting the registration of the requesting terminal is determined from the remaining narrowband base stations interconnected with the first narrowband base station through a TCP / IP network as a redirection registration server, comprising: If a narrowband base station within a stay site of the requesting terminal supports the registration of the requesting terminal, the narrowband base station within the stay site is determined as the redirection registration server, otherwise, an alternative server of the first narrowband base station is determined as the redirection registration server; the alternative server of the first narrowband base station is a narrowband base station supporting the registration of the requesting terminal.

8. The service communication method based on the converged communication site according to claim 1, characterized by, The terminal registration request carries information including IP address information of the requesting terminal and the narrowband base station to which the requesting terminal requests to register, and terminal identity information of the requesting terminal; and the narrowband base station to which the requesting terminal requests to register is the first narrowband base station; The registration access control on the requesting terminal comprises: analyzing the terminal registration request, and determining the request terminal requesting registration; in a case where it is determined based on the identification information carried by the terminal registration request that the terminal registration request is a re-registration request, searching for registration information of the request terminal from the first narrowband base station and each of the remaining narrowband base stations interconnected via a TCP / IP network; in a case where the registration information of the request terminal is found, sending a registration success response message to the request terminal through an AP connected to the first narrowband base station, and configuring the registration information of the request terminal for the remaining narrowband base stations to obtain; wherein the registration success response message is used to indicate that the request terminal has been successfully registered to the narrowband base station requested for registration; and the configured registration information of the request terminal indicates that the request terminal has accessed the first narrowband base station through a wideband mode; the registration access control of the request terminal further comprises: in a case where the search is not successful, sending an identity information reporting request to the request terminal through the AP connected to the first narrowband base station, to instruct the request terminal to report terminal identity information; and performing registration access control according to the received terminal identity information of the request terminal.

9. The service communication method based on a converged communication site according to any one of claims 5 to 8, characterized by, the narrowband base station to which the request terminal requests to register comprises: a narrowband base station matching preset server information configured by the request terminal; or a narrowband base station matching IP address information of a redirection registration server carried by a redirection registration response message received by the request terminal, wherein the redirection registration response message received by the request terminal is a registration response message sent by a narrowband base station to which the request terminal previously requests to register, in response to a terminal registration request sent by the request terminal when the request terminal previously requests to register, in a case where the registration success condition is not met and there is a remaining narrowband base station supporting registration of the request terminal; the redirection registration server is a narrowband base station supporting registration of the request terminal; or a previous narrowband base station to which the request terminal is last successfully registered; or a narrowband base station matching alternative server information configured by the request terminal, wherein the alternative server information is information configured by the request terminal based on a WLAN message carrying IP address information of an alternative server of the previous narrowband base station, which is sent by the previous narrowband base station after the request terminal is successfully registered to the previous narrowband base station, and the alternative server of the previous narrowband base station is a narrowband base station different from the previous narrowband base station and supporting registration of the request terminal.

10. The service communication method based on a converged communication site according to any one of claims 5 to 8, characterized by, information carried by the registration success response message comprises IP address information of an alternative server of the first narrowband base station, to enable the request terminal to configure alternative server information and request registration to a narrowband base station matching the alternative server information when the first narrowband base station is unavailable; and the alternative server of the first narrowband base station is a narrowband base station different from the first narrowband base station and supporting registration of the request terminal.

11. The service communication method based on a fusion communication site according to any one of claims 1 to 3, characterized by, the method further comprises: in a case where a terminal heartbeat message of a registered terminal is received, determining that there is a wideband access relationship in a normal state between the registered terminal and the first narrowband base station; The registered terminal is a terminal user unit successfully registered to the first narrowband base station, and the terminal heartbeat message is a WLAN heartbeat message sent by the registered terminal when it is determined that the wideband access relationship between the registered terminal and the first narrowband base station is normal and a terminal heartbeat sending condition is met.

12. The service communication method based on a fusion communication site according to any one of claims 1 to 3, characterized by, The method further comprises: Upon receiving a deregistration request of the registered terminal, modifying the registration information of the registered terminal to represent that the wideband access relationship between the registered terminal and the first narrowband base station is in a disconnected state; The registered terminal is a terminal user unit successfully registered to the first narrowband base station, and the deregistration request is a WLAN message sent by the registered terminal when it intends to actively disconnect the normal wideband access relationship with the first narrowband base station.

13. The service communication method based on the converged communication site according to claim 12, characterized by, The method further comprises: If a terminal registration request of the disconnected terminal is not received within a second preset time period, removing the registration information of the disconnected terminal to represent that there is no longer a wideband access relationship between the disconnected terminal and the first narrowband base station; The disconnected terminal is the registered terminal whose wideband access relationship with the first narrowband base station is disconnected, and the second preset time period is a time period of a third preset length after the first narrowband base station determines that the wideband access relationship with the disconnected terminal is disconnected.

14. The service communication method based on a fusion communication site according to any one of claims 1 to 3, characterized by, The method further comprises: When a base station heartbeat sending condition is met, sending a base station heartbeat message through an AP connected to the first narrowband base station, the base station heartbeat message being a WLAN message sent to a registered terminal whose wideband access relationship with the first narrowband base station is normal, for the registered terminal to determine that the wideband access relationship with the first narrowband base station is normal; The registered terminal is a terminal user unit successfully registered to the first narrowband base station, and the base station heartbeat sending condition includes a current time being a base station heartbeat sending time specified by a base station heartbeat sending period.

15. The converged communication site based business communication method of claim 14, wherein, Sending a base station heartbeat message through an AP connected to the first narrowband base station includes: Sending a base station heartbeat message carrying IP address information of a backup server of the first narrowband base station through an AP connected to the first narrowband base station; the IP address information of the backup server of the first narrowband base station is used for the registered terminal to configure backup server information and request registration to a narrowband base station matching the backup server information when the first narrowband base station is unavailable; the backup server of the first narrowband base station is a narrowband base station different from the first narrowband base station and supporting registration of the registered terminal; The base station heartbeat sending condition includes: The current time being a base station heartbeat sending time specified by a base station heartbeat sending period; or The backup server of the first narrowband base station changes.

16. A service communication method based on a converged communication site, characterized by, Applied to a first terminal user unit, the method comprises: In a case that the WLAN communication is supported and no access to any narrowband base station through a broadband mode, a terminal registration request is sent to a target registration server through an associated AP; the terminal registration request is used to request registration to the target registration server, so that the target registration server performs registration access control on the first terminal user unit; the target registration server is a narrowband base station to which the first terminal user unit requests registration; In a case that the first narrowband base station is accessed through a broadband mode, a first WLAN service carrying receiving terminal information is sent to the first narrowband base station through the associated AP in response to a service sending requirement, so that the first narrowband base station determines a receiving terminal of the first WLAN service and performs service forwarding based on the receiving terminal; wherein the first narrowband base station is located in a first converged communication site, and the first narrowband base station is pre-configured to be connected with a WLAN access point (AP) through a TCP / IP network; And, a receiving communication service.

17. The converged communication site based business communication method of claim 16, wherein, The receiving communication service includes: In a case that the first narrowband base station is accessed through a broadband mode, a second WLAN service issued by the first narrowband base station is received through the associated AP; the second WLAN service is a service issued by the first narrowband base station in a WLAN service mode when the first narrowband base station receives a service with the first terminal user unit as a receiving terminal and determines that the base station and the first terminal user unit satisfy a WLAN communication relationship, the WLAN service mode includes transmitting WLAN network protocol data through a WLAN network; and / or, In a case that the third narrowband base station is accessed through a narrowband mode, a second narrowband service issued by the third narrowband base station is received through a narrowband air interface; the second narrowband service is a narrowband service issued by the third narrowband base station in a narrowband service mode when the third narrowband base station receives a service with the first terminal user unit as a receiving terminal and determines that the base station and the first terminal user unit satisfy a narrowband communication relationship, the third narrowband base station is a narrowband base station in a stay site of the first terminal user unit, and the narrowband service mode includes transmitting narrowband network protocol data through a narrowband network.

18. The converged communication site based business communication method of claim 16, wherein, The terminal registration request sent to the target registration server through the associated AP includes: Based on IP address information of the first terminal user unit and IP address information of the target registration server, and terminal identity information of the first terminal user unit, a terminal registration request is configured; The terminal registration request is sent to the target registration server through the associated AP; After the terminal registration request is sent, the method further includes: In a case that a registration success response message of the first terminal user unit from the target registration server is received through the associated AP, it is determined that the first terminal user unit has been successfully registered to the target registration server, and a WLAN path between the first terminal user unit and the target registration server is established; The registration success response message is a registration response message sent by the target registration server when a pre-configured registration success condition is met, the registration success condition is configured as a first success condition or a second success condition, the first success condition includes that the current narrowband base station supports the registration of the requesting terminal, and the second success condition includes that the current narrowband base station supports the registration of the requesting terminal and is a narrowband base station in the staying site of the requesting terminal, or the current narrowband base station supports the registration of the requesting terminal and a narrowband base station in the staying site of the requesting terminal does not support the registration of the requesting terminal; and the registration information of the first terminal user unit configured by the target registration server after determining that the registration success condition is met is used to represent that the first terminal user unit has accessed to the target registration server through a wideband mode.

19. The converged communication site based business communication method of claim 18, wherein, After sending the terminal registration request, the method further includes: In a case where the redirection registration response message of the target registration server for the first terminal user unit is received through the associated AP, the redirection registration server is determined according to the IP address information of the redirection registration server carried in the redirection registration response message, the target registration server is updated to the redirection registration server, and the step of sending the terminal registration request to the target registration server through the associated AP is returned to be executed; The redirection registration response message is a registration response message sent by the target registration server in a case where the registration success condition is not met and there is a remaining narrowband base station supporting the registration of the first terminal user unit; and the redirection registration server is one of the remaining narrowband base stations supporting the registration of the first terminal user unit.

20. The converged communication site based business communication method of claim 18, wherein, The method further includes: In a case where the first terminal user unit has successfully registered to a previous narrowband base station, the terminal registration request is configured based on the IP address information of the first terminal user unit and the IP address information of the target registration server, and identification information used to represent that the message is a re-registration request; The terminal registration request is sent to the target registration server through the associated AP; After sending the terminal registration request, the method further includes: In a case where the registration success response message of the target registration server for the first terminal user unit is received through the associated AP, it is determined that the first terminal user unit has successfully registered to the target registration server, and a WLAN path between the first terminal user unit and the target registration server is established; The registration success response message is a registration response message sent by the target registration server in a case where it is determined that the terminal registration request is a re-registration request and the registration information of the first terminal user unit is found from the target registration server and each remaining narrowband base station interconnected through a TCP / IP network.

21. The converged communication site based business communication method of claim 20, wherein, After sending the terminal registration request, the method further includes: In case of receiving the identity information reporting request through the associated AP, sending the terminal identity information of the first terminal user unit to the target registration server through the associated AP, so that the target registration server performs registration access control according to the terminal identity information of the first terminal user unit. The identity information reporting request is a WLAN message sent by the target registration server in case of receiving the terminal registration request and failing to find the registration information of the first terminal user unit from the target registration server and each remaining narrowband base station interconnected through a TCP / IP network.

22. The converged communication site based business communication method according to any one of claims 16-21, wherein, The target registration server comprises: The narrowband base station matching the preset server information configured by the first terminal user unit at the time of writing frequency; or, The narrowband base station matching the IP address information of the redirection registration server carried in the redirection registration response message received by the first terminal user unit, wherein the redirection registration response message received by the first terminal user unit is a registration response message sent by the narrowband base station to which the first terminal user unit previously requests to register, in response to the terminal registration request sent by the first terminal user unit when previously requesting to register, in case of failing to meet the registration success condition and existing the remaining narrowband base station supporting the registration of the first terminal user unit; the redirection registration server is the narrowband base station supporting the registration of the first terminal user unit; or, The original narrowband base station to which the first terminal user unit successfully registers last time; or, The narrowband base station matching the alternative server information configured by the first terminal user unit, the alternative server information being information configured by the first terminal user unit based on the WLAN message carrying the IP address information of the alternative server of the original narrowband base station sent by the original narrowband base station after successfully registering to the original narrowband base station, the alternative server of the original narrowband base station being the narrowband base station different from the original narrowband base station and supporting the registration of the first terminal user unit.

23. The converged communication site based business communication method according to any one of claims 16-21, wherein, In case of accessing to the first narrowband base station through a broadband mode, further comprising: Performing state management on the broadband access relationship between the first terminal user unit and the first narrowband base station.

24. The converged communication site based business communication method of claim 23, wherein, Performing state management on the broadband access relationship between the first terminal user unit and the first narrowband base station, comprising: Periodically sending a terminal heartbeat message to the first narrowband base station through the associated AP, so that the first narrowband base station determines that the broadband access relationship between the first narrowband base station and the first terminal user unit is normal; and / or, In case that the difference between the current terminal information of the first terminal user unit and the terminal information when the terminal heartbeat message is last sent exceeds a preset limit, sending a terminal heartbeat message to the first narrowband base station through the associated AP.

25. The converged communication site based business communication method of claim 23, wherein, Performing state management on the broadband access relationship between the first terminal user unit and the first narrowband base station, comprising: When the wideband access relationship with the first narrowband base station is to be actively disconnected, a deregistration request is sent to the first narrowband base station through the associated AP, the deregistration request being used to instruct the first narrowband base station to modify the registration information of the first terminal user unit, so as to represent that the wideband access relationship between the first narrowband base station and the first terminal user unit is in a disconnected state.

26. The converged communication site based business communication method of claim 23, wherein, The state of the wideband access relationship between the first terminal user unit and the first narrowband base station is managed, including: In a case where a base station heartbeat message of the first narrowband base station is received through the associated AP, it is determined that the wideband access relationship between the first terminal user unit and the first narrowband base station is in a normal state. The base station heartbeat message is a WLAN message sent by the first narrowband base station to a terminal user unit in a normal wideband access relationship with the first narrowband base station when a base station heartbeat sending condition is met.

27. A narrowband base station, characterized in that, The narrowband base station belongs to a converged communication site, and the converged communication site further includes a terminal user unit. The narrowband base station is pre-configured to be connected to an access point (AP) of a wireless local area network (WLAN) through a transmission control protocol / internet protocol (TCP / IP) network. The narrowband base station includes at least one processor and a memory connected to the processor, wherein: The memory is used to store a computer program; The processor is used to execute the computer program, so that the narrowband base station can implement the converged communication site-based service communication method of any one of claims 1 to 15.

28. An end user unit, characterized by The terminal user unit includes at least one processor and a memory connected to the processor, wherein: The memory is used to store a computer program; The processor is used to execute the computer program, so that the terminal user unit can implement the converged communication site-based service communication method of any one of claims 16 to 26.

29. A computer program product, characterised in that, The computer readable instructions, when executed on an electronic device, can enable the electronic device to implement the converged communication site-based service communication method of any one of claims 1 to 15, or implement the converged communication site-based service communication method of any one of claims 16 to 26.

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