CN112040566B

CN112040566B - Narrow-band and wide-band single-call communication system

Info

Publication number: CN112040566B
Application number: CN202011148052.5A
Authority: CN
Inventors: 杨勇; 陶聪; 李康
Original assignee: Auctus Technologies Co ltd
Current assignee: Auctus Technologies Co ltd
Priority date: 2020-10-23
Filing date: 2020-10-23
Publication date: 2022-08-09
Anticipated expiration: 2040-10-23
Also published as: CN112040566A

Abstract

The invention provides a transfer device, a fusion server and a fusion system for narrow-band and broadband communication, a single-call communication method for narrow-band and broadband, and a related non-transitory computer-readable storage medium. The invention can realize single call communication between any two kinds of narrow-band terminal equipment and any broadband terminal equipment.

Description

Narrow-band and wide-band single-call communication system

Technical Field

The present disclosure relates to the field of voice communications. In particular, the present invention relates to converged narrowband and broadband communications. More particularly, the present invention relates to a narrowband and broadband communication relay device, a convergence server, a convergence system, a narrowband and broadband single call communication method, and a related non-transitory computer-readable storage medium.

Background

Private network communication is usually specially constructed to meet the requirements of user organization and management, safe production, dispatching and commanding and the like. The private network communication has the advantages of autonomous control, no external restriction, better adaptability to specific working environment, guarantee of working communication of users and the like. The public network communication is realized by utilizing the data traffic of the existing operator network, and the cross-region remote talkback communication can be realized without building a base station relay.

With the continuous development of network technology, especially the commercial 5G network and the vigorous development of the internet of things, the world of everything interconnection has come quietly. In the future, various traditional terminals and devices of the narrow-band private network and the broadband private network face the requirement of being integrated into the world of everything interconnection for a long time. The wireless communication industry needs to switch from traditional narrow-band private network communication to converged communication of a public network and a private network, from simple trunking voice call to multimedia communication of videos, pictures and voice messages, and from single voice scheduling to intelligent comprehensive scheduling combining videos, positions, sensors and AI.

The cluster scheduling system undergoes an evolution from analog to digital, narrowband digital to wideband digital. Currently, analog clusters, narrowband clusters, and broadband clusters are also used in large quantities in the market. However, how to realize the integration, optimization and utilization maximization of wireless communication resources has become a hot technical problem in the industry in recent years.

Currently, products for realizing the intercommunication between the DMR and the B-Trunc exist in the market, and the voice call intercommunication between the DMR equipment terminal and the B-Trunc equipment terminal can be completed. However, such products are only single protocol and media conversion, and only support the interworking of a narrowband private network and a broadband private network.

Therefore, a solution to the above-described problems of the prior art is urgently needed.

Disclosure of Invention

According to a first aspect of the present invention, a narrowband and broadband communication relay device is provided, where the relay device is communicably connected to at least a first calling narrowband terminal device, a convergence server, and a first called terminal device, and the relay device, the first calling narrowband terminal device, and the first called terminal device each have a system user code; and

the transfer apparatus at least includes:

a narrowband transceiver module configured to receive a first narrowband single call signaling, the first narrowband single call signaling being from the first calling narrowband terminal device, and the first narrowband single call signaling comprising at least a first narrowband single call request identification, a system user code of the first calling narrowband terminal device, and a system user code of the first called terminal device;

a controller, determining whether to convert the first narrowband single call signaling into a first broadband single call signaling according to a system user code of the first calling narrowband terminal device and a system user code of the transfer device, where the first broadband single call signaling at least includes a first broadband single call request identifier, the system user code of the first calling narrowband terminal device, and the system user code of the first called terminal device;

and the broadband transceiving module is used for sending the first broadband single call signaling to the convergence server.

According to a preferred embodiment of the relay device of the present invention, the system user codes of the relay device, the first calling narrowband terminal device and the first called terminal device each include x-bit enterprise code and m-bit identifier conforming to narrowband protocol, and the m-bit identifier is composed of n-bit identity code and m-n-bit sub-code, where x, m and n are positive integers.

According to a preferred embodiment of the transit device of the present invention, the enterprise code is used to identify an enterprise to which the transit device belongs, an enterprise to which the first calling narrowband terminal device belongs, and an enterprise to which the first called narrowband terminal device belongs, respectively.

According to a preferred embodiment of the relay device of the present invention, the controller determines whether to convert the first narrowband single call signaling into the first broadband single call signaling according to whether an enterprise code in a system user code of the first calling narrowband terminal device is the same as an enterprise code in a system user code of the relay device.

According to a preferred embodiment of the relay device of the present invention, the controller determines to convert the first narrowband single call signaling into the first broadband single call signaling according to that an enterprise code in a system user code of the first calling narrowband terminal device is the same as an enterprise code in a system user code of the relay device; and the controller ignores the first narrowband single call signaling according to that an enterprise code in a system user code of the first calling narrowband terminal device is different from an enterprise code in a system user code of the transfer device.

According to a preferred embodiment of the relay device of the present invention, the enterprise code in the system user code of the first calling narrowband terminal device is the same as the enterprise code of the system user code of the first called narrowband terminal device.

According to a preferred embodiment of the relay device of the present invention, the enterprise code in the system user code of the first calling narrowband terminal device is different from the enterprise code of the system user code of the first called narrowband terminal device.

According to a preferred embodiment of the relay device of the present invention, the first calling narrowband terminal device is within a signal coverage of the relay device, that is, the first calling narrowband terminal device can directly communicate with the relay device; if the first called terminal device is a narrowband terminal device, the first called terminal device is not in the signal coverage range of the relay device, that is, the first called terminal device cannot directly communicate with the relay device.

According to a preferred embodiment of the relay device of the present invention, the narrowband protocol followed by the first calling narrowband terminal device is the same as the narrowband protocol followed by the relay device, and the narrowband protocol is any one of a DMR protocol, a PDT protocol, and a Tetra protocol.

According to a preferred embodiment of the relay device of the present invention, the narrowband transceiver module is configured to receive first narrowband audio data in addition to the first narrowband single call signaling, the first narrowband audio data complying with a narrowband audio format;

the controller is further configured to convert the first narrowband audio data into first wideband audio data in addition to converting the first narrowband single call signaling into first wideband single call signaling, according to the fact that an enterprise code in a system user code of the first calling narrowband terminal device is the same as an enterprise code in a system user code of the transit device, the first wideband audio data following a wideband audio format; and

the broadband transceiver module is further configured to send the first broadband audio data to the convergence server in addition to sending the first broadband single-call signaling to the convergence server.

According to a preferred embodiment of the relay device of the present invention, the system user code is used to generally identify the affiliated enterprise department of the relay device, the affiliated enterprise department of the first calling narrowband terminal device, and the affiliated enterprise department of the first called terminal device, respectively.

According to a preferred embodiment of the transit device of the present invention, the broadband transceiver module is further configured to receive a second broadband single-call signaling from the convergence server, where the second broadband single-call signaling includes at least a second broadband single-call request identifier, a system user code of the second called narrowband terminal device, and a system user code of the second calling terminal device;

the controller is further configured to convert the second broadband single-call signaling into second narrowband single-call signaling, the second narrowband single-call signaling comprising at least a second narrowband single-call request identification, a system user code of the second called narrowband terminal device, a system user code of the second calling terminal device;

the narrowband transceiving module is further configured to send the first narrowband single call signaling to all narrowband terminal devices within the signal coverage of the relay device.

According to a preferred embodiment of the relay device of the present invention, the second calling terminal device is not in the signal coverage of the relay device, i.e. the second calling terminal device is not able to directly communicate with the relay device.

According to a preferred embodiment of the transit device of the present invention, the enterprise code in the system user code of the second calling terminal device is the same as the enterprise code in the system user code of the second called narrowband terminal device.

According to a preferred embodiment of the transit device of the present invention, the enterprise code in the system user code of the second calling terminal device is different from the enterprise code in the system user code of the second called narrowband terminal device.

According to a preferred embodiment of the relay device of the present invention, the broadband transceiver module is configured to receive second broadband audio data in addition to the second broadband single call signaling, the second broadband audio data complying with a broadband audio format;

the controller is configured to convert the second wideband audio data into second narrowband audio data in addition to converting the second wideband single call signaling into second narrowband single call signaling, the second narrowband audio data conforming to a narrowband audio format;

the narrowband transceiving module is configured to transmit second narrowband audio data to all narrowband terminal devices within the signal coverage of the transit device in addition to transmitting the first wideband single-call signaling to all narrowband terminal devices within the signal coverage of the transit device.

According to a second aspect of the present invention, there is provided a convergence server for narrowband and broadband communication, the convergence server being communicably connected with at least a plurality of relay devices, a plurality of narrowband terminal devices, a plurality of broadband base stations, and a plurality of broadband terminal devices, the plurality of relay devices, the plurality of narrowband terminal devices, and the plurality of broadband terminal devices each having a system user code; and

the convergence server is at least configured to:

receiving a first broadband single-call signaling, where the first broadband single-call signaling at least includes a first broadband single-call request identifier, a system user code of the first calling terminal device, and a system user code of the first called terminal device, where the first calling terminal device and the first called terminal device are each one of the multiple narrowband terminal devices, the multiple broadband terminal devices, and the multiple relay devices;

at least determining whether the first called terminal equipment is a callable terminal equipment according to the system user code of the first called terminal equipment;

if the first called terminal equipment is determined not to be the callable terminal equipment, sending a rejection single-call signaling to the first calling terminal equipment;

if the first called terminal device is determined to be a callable terminal device, determining at least whether the first called terminal device is one of the plurality of narrowband terminal devices, one of the plurality of broadband terminal devices, or one of the plurality of relay devices;

if the first called terminal device is determined to be one of the narrow-band terminal devices, at least determining the department to which the enterprise of the first called terminal device belongs according to the system user code of the first called terminal device, and sending the first broadband single call signaling to the transit device corresponding to the department to which the enterprise to which the first called terminal device belongs;

if the first called terminal device is determined to be one of the broadband terminal devices or one of the transit devices, at least determining whether the first called terminal device is online;

if the first called terminal is determined to be on-line, the first broadband single-call signaling is sent to the first called terminal through one of the broadband base stations or directly; and

and if the first called terminal is determined to be not on line, sending a rejection single call signaling to the first calling terminal equipment.

According to a preferred embodiment of the convergence server of the present invention, the system user codes of the plurality of transit devices, the plurality of narrowband terminal devices and the plurality of broadband terminal devices respectively comprise x-bit enterprise codes and m-bit identifiers conforming to the narrowband protocol, and the m-bit identifiers are composed of n-bit identity codes and m-n-bit sub-codes, where x, m and n are positive integers

According to a preferred embodiment of the convergence server of the present invention, the enterprise codes are respectively used to identify an enterprise to which the transit device belongs, an enterprise to which the first calling narrowband terminal device belongs, and an enterprise to which the first called narrowband terminal device belongs.

According to a preferred embodiment of the convergence server of the present invention, the enterprise code in the system user code of the first calling terminal device is the same as the enterprise code of the system user code of the first called terminal.

According to a preferred embodiment of the convergence server of the invention, the enterprise code of the system user code of the first calling terminal device is different from the enterprise code of the system user code of the first called terminal.

According to a preferred embodiment of the convergence server of the present invention, the system user code is used to generally identify the business affiliation of the transit device, the business affiliation of the first calling narrowband terminal device, and the business affiliation of the first called narrowband terminal device, respectively.

According to a preferred embodiment of the convergence server of the present invention, the first called terminal is not in a signal coverage of the relay device of the first calling terminal device, that is, the first called terminal cannot directly communicate with the relay device of the first calling terminal device.

According to a preferred embodiment of the convergence server according to the invention, the convergence server is further configured to:

receiving first wideband audio data in addition to first wideband single call signaling, the first wideband audio data conforming to a wideband audio format;

in addition to determining that the first called terminal device is one of the plurality of narrowband terminal devices and at least determining that the enterprise to which the first called terminal device belongs and sending the first broadband single call signaling to a transit device for the enterprise to which the first called terminal device belongs, sending the first broadband audio data to a transit device for the enterprise to which the first called terminal device belongs;

in addition to determining that the first called terminal device is one of the plurality of broadband terminal devices and at least determining that the first called terminal is online and sending the first broadband single-call signaling to the first called terminal through one of the plurality of broadband base stations, sending the first broadband audio data to the first called terminal through one of the plurality of broadband base stations.

According to a preferred embodiment of the convergence server of the present invention, if the convergence server determines that the first called terminal device is one of the plurality of narrowband terminal devices, or if the convergence server determines that the first called terminal device is one of the plurality of broadband terminal devices or one of the plurality of relay devices and determines that the first called terminal is online, the convergence scheduling device listens to the call.

According to a third aspect of the present invention, a fusion system of narrowband and broadband communication is provided, where the fusion system at least includes the above relay device and the above fusion server.

According to a fourth aspect of the present invention, a single call communication method between a narrowband and a broadband is provided, in which a relay device is communicably connected to at least a first calling narrowband terminal device, a convergence server, and a first called terminal device, and the relay device, the first calling narrowband terminal device, and the first called terminal device each have a system user code;

the single call communication method at least comprises the following steps:

a narrowband transceiver module of the transit device receives a first narrowband single call signaling, wherein the first narrowband single call signaling is from a first calling narrowband terminal device, and the first narrowband single call signaling at least comprises a first narrowband single call request identifier, a system user code of the first calling narrowband terminal device, and a system user code of a first called terminal device;

the controller of the transfer device determines whether to convert the first narrowband single call signaling into a first broadband single call signaling depending on the system user code of the first calling narrowband terminal device and the system user code of the transfer device, where the first broadband single call signaling at least includes a first broadband single call request identifier, the system user code of the first calling narrowband terminal device, and the system user code of the first called terminal device;

and sending the first broadband single call signaling to the convergence server through a broadband transceiving module of the transit equipment.

According to a preferred embodiment of the single call communication method of the present invention, the system user codes of the relay device, the first calling narrowband terminal device and the first called terminal device each include x-bit enterprise code and m-bit identifier conforming to narrowband protocol, and the m-bit identifier is composed of n-bit identity code and m-n-bit sub-code, where x, m and n are positive integers.

According to a preferred embodiment of the single call communication method of the present invention, the enterprise code is used to identify the enterprise to which the relay device belongs, the enterprise to which the first calling narrowband terminal device belongs, and the enterprise to which the first called narrowband terminal device belongs, respectively.

According to a preferred embodiment of the single call communication method of the present invention, the single call communication method further comprises:

and the controller determines whether to convert the first narrowband single call signaling into a first broadband single call signaling according to whether the enterprise code in the system user code of the first calling narrowband terminal device is the same as the enterprise code in the system user code of the transfer device.

the controller determines to convert the first narrowband single call signaling into a first broadband single call signaling according to the fact that an enterprise code in a system user code of the first calling narrowband terminal device is the same as an enterprise code in a system user code of the transfer device; and the controller ignores the first narrowband single call signaling according to that an enterprise code in a system user code of the first calling narrowband terminal device is different from an enterprise code in a system user code of the transfer device.

According to a preferred embodiment of the single call communication method of the present invention, the enterprise code in the system user code of the first calling narrowband terminal device is the same as the enterprise code of the system user code of the first called terminal device.

According to a preferred embodiment of the single call communication method of the present invention, the enterprise code of the system user code of the first calling narrowband terminal device is different from the enterprise code of the system user code of the first called narrowband terminal device.

According to a preferred embodiment of the single call communication method of the present invention, the first calling narrowband terminal device is within a signal coverage of the relay device, that is, the first calling narrowband terminal device can directly communicate with the relay device; if the first called terminal device is a narrowband terminal device, the first called terminal device is not in the signal coverage range of the relay device, that is, the first called terminal device cannot directly communicate with the relay device.

According to a preferred embodiment of the single call communication method of the present invention, the narrowband protocol followed by the first calling narrowband terminal device is the same as the narrowband protocol followed by the relay device, and the narrowband protocol is any one of a DMR protocol, a PDT protocol, and a Tetra protocol.

the narrowband transceiving module receives first narrowband audio data besides a first narrowband single call signaling, wherein the first narrowband audio data follows a narrowband audio format;

the controller converts the first narrowband audio data into first broadband audio data according to the condition that an enterprise code in a system user code of the first calling narrowband terminal device is the same as an enterprise code in a system user code of the transfer device, except that the first narrowband single call signaling is converted into a first broadband single call signaling, and the first broadband audio data follows a broadband audio format; and

the broadband transceiver module sends the first broadband single call signaling to the convergence server and also sends the first broadband audio data to the convergence server.

According to a preferred embodiment of the single call communication method of the present invention, the system user code is used to generally identify the business affiliation of the relay device, the business affiliation of the first calling narrowband terminal device, and the business affiliation of the first called terminal device, respectively.

the broadband transceiver module receives a second broadband single-call signaling from the convergence server, wherein the second broadband single-call signaling at least comprises a second broadband single-call request identifier, a system user code of the second called narrowband terminal device and a system user code of the second calling terminal device;

the controller converts the second broadband single call signaling into a second narrowband single call signaling, wherein the second narrowband single call signaling at least comprises a second narrowband single call request identifier, a system user code of the second called narrowband terminal device and a system user code of the second calling terminal device;

and the narrow-band transceiver module sends the first narrow-band single call signaling to all narrow-band terminal equipment within the signal coverage range of the transfer equipment.

According to a preferred embodiment of the single call communication method of the present invention, the second calling terminal device is not in the signal coverage of the relay device, i.e. the second calling terminal device is not able to directly communicate with the relay device.

According to a preferred embodiment of the single call communication method of the present invention, the enterprise code in the system user code of the second calling terminal device is the same as the enterprise code in the system user code of the second called narrowband terminal device.

According to a preferred embodiment of the single call communication method of the present invention, the enterprise code in the system user code of the second calling terminal device is different from the enterprise code in the system user code of the second called narrowband terminal device.

the broadband transceiving module receives second broadband audio data besides the second broadband single call signaling, wherein the second broadband audio data follows a broadband audio format;

the controller converts the second wideband audio data into second narrowband audio data in addition to converting the second wideband single call signaling into second narrowband single call signaling, the second narrowband audio data following a narrowband audio format;

the narrowband transceiver module sends the first wideband single call signaling to all narrowband terminal devices within the signal coverage range of the transit device, and also sends second narrowband audio data to all narrowband terminal devices within the signal coverage range of the transit device.

According to a fifth aspect of the present invention, there is provided a non-transitory computer-readable storage medium having stored thereon computer-executable instructions that, when executed by processor circuitry, cause the processor circuitry to perform a single call communication method implemented by the relay device.

According to a sixth aspect of the present invention, there is provided a narrowband and broadband single call communication method implemented by a convergence server communicably connected with at least a plurality of relay devices, a plurality of narrowband terminal devices, a plurality of broadband base stations, and a plurality of broadband terminal devices, each having a system user code;

the single call communication method at least comprises the following steps:

According to a preferred embodiment of the single call communication method of the sixth aspect of the present invention, the system user codes of the plurality of transit devices, the plurality of narrowband terminal devices and the plurality of wideband terminal devices respectively include x-bit enterprise codes and m-bit identifiers conforming to narrowband protocols, and the m-bit identifiers are composed of n-bit identity codes and m-n-bit sub-codes, where x, m and n are positive integers

According to a preferred embodiment of the single call communication method of the sixth aspect of the present invention, the enterprise codes are respectively used to identify the enterprise to which the relay device belongs, the enterprise to which the first calling narrowband terminal device belongs, and the enterprise to which the first called narrowband terminal device belongs.

According to a preferred embodiment of the single call communication method of the sixth aspect of the present invention, the enterprise code in the system user code of the first calling terminal device is the same as the enterprise code of the system user code of the first called terminal.

According to a preferred embodiment of the single call communication method of the sixth aspect of the present invention, the enterprise code in the system user code of the first calling terminal device is different from the enterprise code of the system user code of the first called terminal.

According to a preferred embodiment of the single call communication method according to the sixth aspect of the present invention, the system user code is used to generally identify the business affiliation of the relay device, the business affiliation of the first calling narrowband terminal device, and the business affiliation of the first called terminal device, respectively.

According to a preferred embodiment of the single call communication method of the sixth aspect of the present invention, the first called terminal is not in the signal coverage of the relay device of the first calling terminal device, i.e. the first called terminal is not able to directly communicate with the relay device of the first calling terminal device.

According to a preferred embodiment of the single call communication method of the sixth aspect of the present invention, the single call communication method further comprises:

if the convergence server determines that the first called terminal device is one of the narrow-band terminal devices, or if the convergence server determines that the first called terminal device is one of the broadband terminal devices or one of the transit devices and determines that the first called terminal is online, the convergence scheduling device monitors the call.

According to a seventh aspect of the present invention, there is provided a non-transitory computer-readable storage medium having stored thereon computer-executable instructions that, when executed by processor circuitry, cause the processor circuitry to perform a single call communication method implemented by the convergence server.

Drawings

The invention will be more readily understood by the following description in conjunction with the accompanying drawings, in which:

fig. 1 illustrates a schematic diagram of a transit device for narrowband and broadband communication according to an embodiment of the present invention.

Fig. 2 illustrates a schematic diagram of a converged system of narrowband and broadband communication, according to one embodiment of the invention.

Fig. 3 illustrates a flowchart of a narrowband and broadband single call communication method according to an embodiment of the present invention, wherein a calling narrowband terminal device initiates single call communication.

Fig. 4 illustrates a flowchart of a narrowband and broadband single call communication method according to an embodiment of the present invention, where a calling broadband terminal device or a relay device initiates single call communication.

Detailed Description

The present disclosure will be described in detail below with reference to the accompanying drawings.

First, the present disclosure relates to a variety of communication protocol standards. Several communication protocol standards involved in the specific embodiments described below are now described as follows:

DMR Digital Mobile Radio (DMR) protocol standard is an open protocol standard designed and established by the European Telecommunications Standards Institute (ETSI) to meet the requirements of Mobile communications for middle and low-end professionals and commercial users in european countries.

PDT: the public security Digital Trunking (Police Digital Trunking) protocol standard is a Trunking communication protocol standard with Chinese proprietary intellectual property rights, and can meet the requirements of users in most Trunking communication industries by focusing on the development direction of the future Digital talkback technology. The PDT protocol standard fully considers the situation of China, references and innovatively designs international mature protocol standard technologies (such as Tetra, P25, DMR, MPT1327 and the like), and follows five major principles of high cost performance, safety and confidentiality, large regional system, expandability and backward compatibility.

B-trunC: the Broadband Trunking Communication (Broadband Trunking Communication) protocol standard is a TD-LTE-based 'LTE digital transmission + Trunking voice Communication' private network Broadband Trunking system protocol standard established by the Broadband Trunking (B-trunC) industry alliance organization.

Tetra: the pan European Trunked Radio (Trans European Trunked Radio) protocol standard is a protocol standard designed and developed by ETSI (European telecommunications standards institute) to meet the requirements of professional departments of European countries for mobile communications.

It will be appreciated by those skilled in the art that the above protocol standards are merely exemplary and are not intended to exclude any other protocol standards.

In the present invention, the terms "narrowband" and "broadband" are demarcated by a network access speed of 64Kbps (corresponding to a maximum download speed of 8 Kbps). Network access speeds below 64Kbps are referred to as "narrowband" and network access speeds above 64Kbps are referred to as "broadband".

Fig. 1 illustrates a schematic diagram of a transit apparatus 100 for narrowband and broadband communication according to an embodiment of the present invention. In fig. 1, the relay device 100 is an intelligent relay device. The relay device 100 includes a DMR module 112, a main control module 114, and an LTE module 116. The DMR module 112 is a narrowband transceiver module, the main control module 114 is a controller, and the LTE module 116 is a wideband transceiver module.

In fig. 1, the DMR module 112 is connected to the main control module 114 through a local interface to perform a DMR relay function. Specifically, on one hand, the DMR module 112 receives, through the DMR antenna 110, a DMR signal sent by the DMR terminal device, and sends the DMR signal to the main control module 114; on the other hand, the DMR module 112 receives DMR signals conforming to the DMR protocol from the main control module 114, and transmits the DMR signals to the target DMR terminal device through the DMR antenna 110. The LTE module 116 is also connected to the host module 114 through a local interface and is responsible for communication with the core network server. Similarly, in one aspect, the LTE module 116 receives external LTE signals through the LTE antenna 118 and sends the LTE signals to the host module 114; on the other hand, the LTE module 116 receives an LTE signal compliant with the LTE protocol from the master control module 114. The main control module 114 is responsible for accessing (e.g., logging in, calling, data transferring, etc.) of DMR terminal devices, and intelligently converting voice, media, and data.

In fig. 1, the relay device 100 is compatible with the DMR protocol standard. It should be understood that the DMR module 112 may be replaced with other narrowband transceiver modules, such as PDT modules or Tetra modules, if the relay device 100 is compatible with other narrowband protocol standards, such as PDT protocol standards or Tetra protocol standards. Likewise, in fig. 1, the LTE module 116 is compliant with the LET protocol standard. LET module 116 may be replaced with other broadband transceiver modules, such as a WiFi module or an ethernet module, if transit device 100 is compatible with other broadband protocol standards, such as a WiFi protocol standard or an ethernet protocol standard.

Fig. 2 illustrates a schematic diagram of a converged narrowband and wideband communication system 200, in accordance with one embodiment of the present invention. In fig. 2, the converged communication system 200 includes: two

relay devices

212, 213 and three narrowband

terminal devices

210, 211 within the respective signal coverage; a fusion server 214; a convergence scheduling device 216; a fusion management device 218; the system comprises a broadband base station, apps 220 of two broadband public network mobile phones and two broadband public network interphones 221 in the signal coverage range of the broadband base station.

It should be understood that the numbers of the relay device, the narrowband terminal device, the broadband base station, the App of the broadband public network handset, and the broadband public network interphone shown in fig. 2 are illustrative, and the present invention is not limited to these numbers of terminals and devices.

In fig. 2, one relay apparatus 212 is based on narrow-band communication with a plurality of DMR terminal apparatuses 210, and another relay apparatus 213 is based on narrow-band communication with a plurality of PDT terminal apparatuses 211. The two

transfer devices

212 and 213 and the convergence server 214 are in broadband communication, the convergence scheduling device 216, the convergence management device 218 and the convergence server 214 are in broadband communication, and the convergence server 214 and the App 220 of the broadband public network mobile phone and the broadband public network interphone 221 are in broadband communication (via a broadband base station). Alternatively, the

relay devices

212 and 213 are connected to the public network via LTE, WiFi, ethernet, or the like. Optionally, the converged server 214 and the converged scheduling device 216 are located on a public network cloud platform, and the user may access the converged scheduling device 216 through a client program on a local computer.

All transit devices, narrowband terminal devices, apps of broadband public network mobile phones and broadband public network interphones in the converged communication system 200 respectively have system user codes, and the devices have unique identity identifiers in the converged communication system during the system user codes so as to be used in login, calling, data interaction and the like of the devices.

One embodiment of a system user code is shown in table 1. In the embodiment, the system user code comprises x enterprise codes from high to low, n identity codes and m-n sub-codes, wherein x, m and n are positive integers.

The enterprise code is used to identify the "enterprise to which" these devices and terminals belong. That is, from the enterprise code, it can be determined to which enterprise these devices and terminals belong. For example, a device with a first x-bit enterprise code belongs to enterprise a, a device with a second x-bit enterprise code belongs to enterprise B, a device with a third x-bit enterprise code belongs to enterprise C, and so on.

TABLE 1 systematic user coding

x position	n position	m-n position
			Enterprise coding	Identity coding	Sub-coding

All embodiments herein are described with the enterprise code being located most highly in the system user code, as shown in table 1. It should be understood that these system user codes do not have to be encoded in the order shown in table 1, i.e., the enterprise code may be located after the m-bit identifier, as long as all terminals and devices in the overall converged communication system use the system user code of the same encoding rule.

The system user code generally identifies the "affiliated enterprise sector" of the devices and terminals. That is, in combination with the enterprise code and the identity code and subcode in the system user code, it is possible to determine to which department of which enterprise these devices and terminals belong. For example, a device having a first x-bit enterprise code, a first n-bit identity code, a first m-n-bit subcode belongs to the research and development department of enterprise A, a device having a second x-bit enterprise code, a second n-bit identity code, a second m-n-bit subcode belongs to the production department of enterprise B, a device having a third x-bit enterprise code, a third n-bit identity code, a third m-n-bit subcode belongs to the administration department of enterprise C, and so on.

When the invention is deployed, the signal coverage range of the transit device corresponds to a specific department of a specific enterprise, and the fusion server stores a list of the corresponding relations. For example, if the signal coverage of the three relay devices corresponds to the research and development department of enterprise a and the convergence server determines that the called terminal device is in the research and development department of enterprise a, the convergence server sends call signaling to the three relay devices.

In table 1, the n-bit identity code and the m-n-bit sub-code constitute an m-bit identifier that complies with the specifications of the narrowband protocol standard with which the relay device is compatible. For example, in the embodiment of fig. 2, the relay device 212 communicating with the DMR terminal device 210 is compatible with the DMR protocol standard, and the relay device 213 communicating with the PDT terminal device 211 is compatible with the PDT protocol standard. Since both the DMR protocol standard and the PDT protocol standard specify that the identifiers of mobile stations and peripheral devices should be 24 bits in length, m in the system user codes of the DMR terminal device 210, the PDT terminal device 211, the

relay devices

212, 213 is equal to 24 in the embodiment of fig. 2. Those skilled in the art will appreciate that m may take on different values depending on the narrowband protocol standard with which mediation device 213 is compatible.

Table 2 shows one embodiment of an n-bit identity code for a device in a converged communication system, where n is 4.

Table 2 one embodiment of identity encoding

In the embodiment of table 2, when communicating within the narrowband private network, the DMR terminal device 210, the PDT terminal device 211 and the

relay devices

212 and 213 all use 24-bit identifiers as communication identifiers to identify them, with the first 4 bits as identity codes and the last 20 bits as subcodes.

When the DMR terminal device 210 or the PDT terminal device 211 needs to access the convergence communication system 200 (for example, the DMR terminal device 210 or the PDT terminal device 211 needs to log in the convergence server 214, the DMR terminal device 210 or the PDT terminal device 211 needs to call a public network App 220 (such as an App installed on a public network cell phone or a public network computer) or a public network interphone 221, or the DMR terminal device 210 needs to communicate with the PDT terminal device 211, or the like), the DMR terminal device 210 or the PDT terminal device 211 communicates with the relay device. After receiving the signaling sent by the DMR terminal device 210, the relay device 212 parses an m-bit Identifier (ID) and a DMR signaling of the DMR terminal device 210. In addition, the relay device 212 converts the DMR signaling into LTE broadband signaling, so as to communicate with the convergence server 214 through an LTE module of the relay device 212. In some embodiments, when the parsed signaling is signaling related to only the DMR protocol standard, the relay device directly responds to the signaling without converting the signaling into broadband signaling. When the analyzed signaling is not only signaling related to the DMR protocol standard, such as login signaling, signaling related to voice (e.g., a wheat robbing request, voice content, etc.), the relay device converts the DMR signaling into broadband signaling for transmission.

In step 301, the calling narrowband terminal device sends out narrowband single call signaling. The narrow-band terminal device here may be the DMR terminal device 210 or the PDT terminal device 211 in fig. 2, where the DMR terminal device 210 sends a narrow-band single call signaling to the relay device 212, and the PDT terminal device 211 sends a narrow-band single call signaling to the relay device 213.

The details will be described below by taking an example in which the DMR terminal device 210 sends a narrowband single call signaling to the relay device 212 in fig. 2.

In this case, the narrowband transceiver module of the relay device 212 receives the narrowband single call signaling, where the narrowband single call signaling at least includes a narrowband single call request identifier, a system user code of the DMR terminal device 210, and a system user code of the called terminal device.

Here, the enterprise code of the DMR terminal device 210 and the enterprise code of the called terminal device may be the same or may be different. Furthermore, the called terminal device should not be within the signal coverage of the relay device 212, i.e., the called terminal device should not be able to communicate directly with the relay device 212. Referring to fig. 2, herein, communication between the DMR terminal device 210 and the relay device 212 may be referred to as "direct communication", and communication between the PDT terminal device 211 and the relay device 213 may be referred to as "direct communication". However, the DMR terminal device 210 and the relay device 213 cannot communicate "directly", and the PDT terminal device 211 and the relay device 212 cannot communicate "directly".

In this case, the called terminal device should be one of the PDT terminal device 211, the App 220 of the broadband public network handset, and the broadband public network interphone 221. In the case where the relay device 213 has the call capability, the called terminal device may be the relay device 213.

In step 302, the controller of the relay device 212 determines whether the enterprise code of the DMR terminal device 210 is the same as the enterprise code of the relay device 212, thereby determining whether the relay device 212 should serve the DMR terminal device 210.

If it is determined that the enterprise code of the DMR terminal device 210 is different from the enterprise code of the transit device 212, in step 303, the transit device 212 directly discards or ignores the narrowband single call signaling of the DMR terminal device 210.

If it is determined that the enterprise code of the DMR terminal device 210 is the same as the enterprise code of the relay device 212 (i.e., it is determined that the DMR terminal device 210 and the relay device 212 belong to the same enterprise), in step 304, the controller of the relay device 212 converts the narrowband single call signaling into a broadband single call signaling, and the broadband transceiver module of the relay device 212 sends the broadband single call signaling to the convergence server 214, where the broadband single call signaling at least includes a broadband single call request identifier, a system user code of the DMR terminal device 210, and a system user code of the called terminal device.

In step 305, convergence server 214 receives the broadband single-call signaling and determines whether the called terminal device is a callable terminal device according to the system user code of the called terminal device, i.e., determines whether the called terminal device has call capability.

If the convergence server 214 determines that the called terminal device is not a callable terminal device, it sends a rejection single call signaling to the DMR terminal device 210 in step 306.

If the convergence server 214 determines that the called terminal device is a callable terminal device, in step 307, the convergence server 214 determines whether the called terminal device is a broadband terminal device, a narrowband terminal device, or a relay device.

If the convergence server 214 determines that the called terminal device is a broadband terminal device (such as one of App 220 of a broadband public network handset, broadband public network interphone 221) or a transit device (such as transit device 213), the convergence server further determines whether the called terminal device is online in step 308.

If the called terminal device is determined not to be online, in step 309, the convergence server 214 sends a rejection single call signaling to the DMR terminal device 210.

If it is determined that the called terminal device is online (such as one of App 220 of the broadband public network handset, the broadband public network interphone 221, or the relay device 213 is online), in step 310, the convergence server 214 sends broadband single-call signaling to the called terminal device through the broadband base station (if the called terminal device is a broadband terminal device) or directly sends single-call signaling to the relay device 213 to perform single-call communication with the called terminal device.

If the convergence server 214 determines that the called terminal device is a narrowband terminal device (for example, the PDT terminal device 211), it determines the department to which the enterprise of the called terminal device belongs. Then, in step 311, the convergence server 214 sends a broadband single call signaling to the transit device corresponding to the department to which the enterprise to which the called terminal device belongs.

If the called terminal device is the PDT terminal device 211, the convergence server 214 sends broadband single-call signaling to the relay device 213. In this case, the intercom of the department to which the enterprise to which the called terminal device belongs can listen to the broadband single call signaling.

In step 312, if the called terminal device is within the signal coverage of the relay device corresponding to the department to which the enterprise belongs, the calling narrowband terminal device 210 only performs single call communication with the called terminal device (assumed to be the PDT terminal device 211). If the called terminal device is not in the signal coverage of the transfer device corresponding to the department to which the enterprise belongs, the calling narrowband terminal device 210 cannot perform single call communication with the called terminal device.

It should be understood that the calling narrowband terminal device 210, in addition to transmitting narrowband single call signaling, may also transmit narrowband audio data that conforms to a narrowband audio format. Common narrowband audio formats are g.711pcmu, g.711pcma, g.729 or g.729a, G726, G723, etc.

The controller of the relay device converts the narrowband audio data into wideband audio data that conforms to a wideband audio format. Common wideband audio formats are g.722 or g.722.2(AMR-WB), etc.

In the single call communication process, if the convergence server 214 determines the called narrowband terminal device, or if the convergence server 214 determines the called broadband terminal device or the called relay device and determines that the called broadband terminal device is online, the convergence server 214 starts monitoring the call, for example, recording the call, positioning the call by GPS, and the like.

In step 401, the calling broadband terminal device sends out a broadband single call signaling. The calling broadband terminal device here may be a broadband terminal device in fig. 2 (such as one of App 220 of a broadband public network handset, and broadband public network interphone 221) or a relay device (such as relay device 213). In the following, the broadband public network interphone 221 sends broadband single call signaling to the convergence server 214 as an example.

The operational steps after the convergence server 214 receives the broadband single-call signaling are similar to those illustrated in fig. 3. In step 402, the convergence server 214 determines whether the called terminal device is a callable terminal device according to the system user code of the called terminal device, i.e., determines whether the called terminal device has call capability.

If the convergence server 214 determines that the called terminal device is not a callable terminal device, in step 403, a reject single call signaling is sent to the calling broadband device terminal (here, the broadband public network interphone 221).

If the convergence server 214 determines that the called terminal device is a callable terminal device, in step 404, the convergence server 214 determines whether the called terminal device is a broadband terminal device, a narrowband terminal device, or a relay device.

If the convergence server 214 determines that the called terminal device is a broadband terminal device (such as one of App 220 of a broadband public network handset, broadband public network interphone 221) or a transit device (such as transit device 212, 213), the convergence server further determines whether the called terminal device is online in step 405.

If it is determined that the called terminal device is not on-line, in step 406, the convergence server 214 sends a call rejection single call signaling to the calling broadband device terminal (here, the broadband public network interphone 221).

If it is determined that the called terminal device is online (such as one of App 220 of the broadband public network handset, the broadband public network interphone 221, or the

relay device

212, 213 is online), in step 407, the convergence server 214 sends broadband single-call signaling to the called terminal device through the broadband base station (if the called terminal device is a broadband terminal device) or directly sends single-call signaling to the

relay device

212, 213 to perform single-call communication with the called terminal device.

If the convergence server 214 determines that the called terminal device is a narrowband terminal device (for example, the PDT terminal device 211), it determines the department to which the enterprise of the called terminal device belongs. Then, in step 408, the convergence server 214 sends a broadband single call signaling to the transit device corresponding to the department to which the enterprise to which the called terminal device belongs.

In step 409, if the called terminal device is within the signal coverage of the transit device corresponding to the department to which the enterprise belongs, the calling narrowband terminal device 210 performs single call communication only with the called terminal device (assumed to be the PDT terminal device 211). If the called terminal device is not in the signal coverage of the transfer device corresponding to the department to which the enterprise belongs, the calling narrowband terminal device 210 cannot perform single call communication with the called terminal device.

Those skilled in the art will recognize that some aspects of the apparatus and methods described above may be embodied as processor control code, for example, on a non-volatile carrier medium such as a magnetic disk, CD-ROM or DVD-ROM, programmed memory such as read-only memory (firmware), or on a data carrier such as an optical or electrical signal carrier. For many applications, embodiments of the invention will be implemented on a DSP (digital signal processor), an ASIC (application specific integrated circuit), or an FPGA (field programmable gate array). Thus, the code may comprise conventional program code or microcode or, for example code for setting up or controlling an ASIC or FPGA. The code may also include code for dynamically configuring a reconfigurable device, such as a re-programmable array of logic gates. Similarly, the code may include code for a hardware description language, such as Verilog (TM) or VHDL (very high speed Integrated Circuit hardware description language). As will be appreciated by those skilled in the art, code may be distributed among a plurality of coupled components in communication with each other. The embodiments may also be implemented using code running on a field-programmable (re) programmable analog array or similar device to configure analog hardware, where appropriate.

The embodiments mentioned above illustrate rather than limit the invention, and those skilled in the art will be able to design many alternative embodiments without departing from the scope of the appended claims or embodiments. The word "comprising" does not exclude the presence of elements or steps other than those listed in a claim or an embodiment. The terms "a" or "an" do not exclude a plurality and a single feature or other element may fulfil the functions of several elements recited in the claims or embodiments. The terms "first," "second," "third," and the like, are used solely to distinguish one element, component, device, and/or signal from another element, component, device, and/or signal and are not intended to limit such elements, components, devices, and/or signals. Any reference numerals or references in the claims or embodiments should not be construed as limiting the scope of the claims or embodiments.

It is understood that the embodiments and examples herein are for illustrative purposes only and that many variations may be made by those skilled in the art, while the scope of the invention is defined by the claims.

Claims

1. A transfer device for narrow-band and broadband communication is characterized in that the transfer device is at least connected with a first calling narrow-band terminal device, a fusion server and a first called terminal device in a communication way, and the transfer device, the first calling narrow-band terminal device and the first called terminal device are respectively provided with a system user code; and

the transfer apparatus at least includes:

2. The relay device according to claim 1, wherein the system user codes of the relay device, the first calling narrowband terminal device and the first called terminal device each include x-bit enterprise code and m-bit identifier compliant with narrowband protocol, the m-bit identifier is composed of n-bit identity code and m-n-bit sub-code, where x, m and n are positive integers.

3. The relay device according to claim 2, wherein the enterprise code is used to identify an enterprise to which the relay device belongs, an enterprise to which the first calling narrowband terminal device belongs, and an enterprise to which the first called narrowband terminal device belongs, respectively.

4. The relay device according to claim 2 or 3, wherein the controller determines whether to convert the first narrowband single call signaling into the first broadband single call signaling according to whether an enterprise code in a system user code of the first calling narrowband terminal device is the same as an enterprise code in a system user code of the relay device.

5. The relay device according to claim 2 or 3, wherein the controller determines to convert the first narrowband single call signaling into the first broadband single call signaling according to that an enterprise code in a system user code of the first calling narrowband terminal device is the same as an enterprise code in a system user code of the relay device; and the controller ignores the first narrowband single call signaling according to that an enterprise code in a system user code of the first calling narrowband terminal device is different from an enterprise code in a system user code of the transfer device.

6. The transfer device of claim 2 or 3, wherein the enterprise code in the system user code of the first calling narrowband terminal device is the same as the enterprise code in the system user code of the first called narrowband terminal device.

7. The transfer device of claim 2 or 3, wherein the enterprise code in the system user code of the first calling narrowband terminal device is different from the enterprise code in the system user code of the first called narrowband terminal device.

8. The relay device according to claim 2 or 3, wherein the first calling narrowband terminal device is within a signal coverage range of the relay device, that is, the first calling narrowband terminal device can directly communicate with the relay device; if the first called terminal device is a narrowband terminal device, the first called terminal device is not in the signal coverage range of the relay device, that is, the first called terminal device cannot directly communicate with the relay device.

9. The relay device according to claim 2 or 3, wherein the narrowband protocol followed by the first calling narrowband terminal device is the same as the narrowband protocol followed by the relay device, and the narrowband protocol is any one of a DMR protocol, a PDT protocol, and a Tetra protocol.

10. The relay device according to claim 2 or 3,

the narrowband transceiver module is configured to receive first narrowband audio data in addition to first narrowband single call signaling, the first narrowband audio data conforming to a narrowband audio format;

11. The relay device according to claim 2 or 3, wherein the system user code is used to generally identify the affiliated enterprise department of the relay device, the affiliated enterprise department of the first calling narrowband terminal device and the affiliated enterprise department of the first called narrowband terminal device, respectively.

12. The relay device according to claim 2 or 3,

the broadband transceiver module is further configured to receive a second broadband single-call signaling from the convergence server, the second broadband single-call signaling comprising at least a second broadband single-call request identification, a system user code of a second called narrowband terminal device, and a system user code of a second calling terminal device;

13. The relay device according to claim 12, wherein the second calling terminal device is not in a signal coverage of the relay device, that is, the second calling terminal device is not capable of directly communicating with the relay device.

14. The relay device according to claim 12, wherein the enterprise code in the system user code of the second calling terminal device is the same as the enterprise code in the system user code of the second called narrowband terminal device.

15. The relay device according to claim 12, wherein the enterprise code in the system user code of the second calling terminal device is different from the enterprise code in the system user code of the second called narrowband terminal device.

16. The relay device according to claim 12,

the broadband transceiver module is configured to receive second broadband audio data in addition to the second broadband single call signaling, the second broadband audio data conforming to a broadband audio format;

17. A fusion server for narrow-band and broadband communication is characterized in that the fusion server is at least connected with a plurality of relay devices, a plurality of narrow-band terminal devices, a plurality of broadband base stations and a plurality of broadband terminal devices in a communication way, and the plurality of relay devices, the plurality of narrow-band terminal devices and the plurality of broadband terminal devices are respectively provided with system user codes; and

the fusion server at least comprises:

a device for receiving a first broadband single call signaling, where the first broadband single call signaling at least includes a first broadband single call request identifier, a system user code of a first calling terminal device, and a system user code of a first called terminal device, where the first calling terminal device and the first called terminal device are each one of the multiple narrowband terminal devices, the multiple broadband terminal devices, and the multiple relay devices;

means for determining at least whether the first called terminal device is a callable terminal device based on a system user code of the first called terminal device;

means for sending a rejection single call signaling to the first calling terminal device if it is determined that the first called terminal device is not a callable terminal device;

means for determining at least whether the first called terminal device is one of the plurality of narrowband terminal devices, one of the plurality of broadband terminal devices, or one of the plurality of relay devices if it is determined that the first called terminal device is a callable terminal device;

means for determining at least a department to which an enterprise to which the first called terminal device belongs according to a system user code of the first called terminal device if it is determined that the first called terminal device is one of the plurality of narrowband terminal devices, and transmitting the first broadband single call signaling to a relay device corresponding to the department to which the enterprise to which the first called terminal device belongs;

means for determining at least whether the first called terminal device is online if it is determined that the first called terminal device is one of the plurality of broadband terminal devices or one of the plurality of relay devices;

means for sending the first broadband single-call signaling to the first called terminal through one of the plurality of broadband base stations or directly if the first called terminal is determined to be online; and

and if the first called terminal is determined to be offline, sending a single call rejection signaling to the first calling terminal equipment.

18. The convergence server of claim 17 wherein the system user codes of the plurality of transit devices, the plurality of narrowband end devices, and the plurality of broadband end devices each comprise an x-bit enterprise code and an m-bit identifier compliant with a narrowband protocol, the m-bit identifier comprising an n-bit identity code and an m-n-bit sub-code, wherein x, m, and n are positive integers.

19. The convergence server of claim 18 wherein the enterprise code is used to identify an enterprise to which the transit device belongs, an enterprise to which the first calling narrowband terminal device belongs, and an enterprise to which the first called narrowband terminal device belongs, respectively.

20. The convergence server of claim 17 or 18 wherein the enterprise code in the system user code of the first calling terminal device is the same as the enterprise code in the system user code of the first called terminal.

21. The convergence server of claim 17 or 18 wherein the enterprise code in the system user code of the first calling terminal device is different from the enterprise code in the system user code of the first called terminal.

22. The convergence server according to claim 17 or 18 wherein the system user codes are used to generally identify the affiliated enterprise department of the transit device, the affiliated enterprise department of the first calling narrowband terminal device, and the affiliated enterprise department of the first called narrowband terminal device, respectively.

23. The convergence server according to claim 17 or 18 wherein the first called terminal is not in a signal coverage of the relay device of the first calling terminal device, i.e. the first called terminal is not able to directly communicate with the relay device of the first calling terminal device.

24. The convergence server of claim 17 or 18,

the fusion server further comprises:

means for receiving first wideband audio data in addition to first wideband single call signaling, the first wideband audio data conforming to a wideband audio format;

means for transmitting the first broadband audio data to a transit device of a department to which the enterprise belongs for the first called terminal device, in addition to determining that the first called terminal device is one of the plurality of narrowband terminal devices and at least determining that the enterprise to which the first called terminal device belongs and transmitting the first broadband single call signaling to a transit device of a department to which the enterprise belongs for the first called terminal device belongs;

means for transmitting the first broadband audio data to the first called terminal through one of the plurality of broadband base stations in addition to determining that the first called terminal is one of the plurality of broadband terminal devices and at least determining that the first called terminal is online and transmitting the first broadband single-call signaling to the first called terminal through one of the plurality of broadband base stations.

25. The convergence server of claim 17 or 18,

the fusion server further comprises:

and if the convergence server determines that the first called terminal device is one of the narrowband terminal devices, or if the convergence server determines that the first called terminal device is one of the broadband terminal devices or one of the transit devices and determines that the first called terminal is online, the device monitors the call through the convergence scheduling device.

26. A convergence system of narrowband and broadband communication, characterized in that the convergence system comprises at least a relay device according to any of claims 1-16 and a convergence server according to any of claims 17-25.

27. A single call communication method of narrow band and broadband is characterized in that a transfer device is at least connected with a first calling narrow band terminal device, a fusion server and a first called terminal device in a communication way, wherein the transfer device, the first calling narrow band terminal device and the first called terminal device are respectively provided with a system user code;

the single call communication method at least comprises the following steps:

28. The single-call communication method according to claim 27, wherein the system user codes of the relay device, the first calling narrowband terminal device and the first called terminal device each include x-bit enterprise code and m-bit identifier compliant with narrowband protocol, and the m-bit identifier is composed of n-bit identity code and m-n-bit sub-code, where x, m and n are positive integers.

29. The single-call communication method according to claim 28, wherein the enterprise code is used to identify the enterprise to which the relay device belongs, the enterprise to which the first calling narrowband terminal device belongs, and the enterprise to which the first called narrowband terminal device belongs, respectively.

30. The single-call communication method according to claim 27 or 28, wherein the single-call communication method further comprises:

31. The single call communication method according to claim 27 or 28, wherein the single call communication method further comprises:

32. The single-call communication method according to claim 27 or 28, wherein the enterprise code in the system subscriber code of the first calling narrowband terminal device is the same as the enterprise code in the system subscriber code of the first called terminal device.

33. The single-call communication method according to claim 27 or 28, wherein the enterprise code of the system user code of the first calling narrowband terminal device is different from the enterprise code of the system user code of the first called terminal device.

34. The single-call communication method according to claim 27 or 28, wherein the first calling narrowband terminal device is within a signal coverage of the relay device, that is, the first calling narrowband terminal device can directly communicate with the relay device; if the first called terminal device is a narrowband terminal device, the first called terminal device is not in the signal coverage range of the relay device, that is, the first called terminal device cannot directly communicate with the relay device.

35. The single-call communication method according to claim 27 or 28, wherein the narrowband protocol followed by said first calling narrowband terminal device is the same as the narrowband protocol followed by said relay device, and said narrowband protocol is any one of DMR protocol, PDT protocol, Tetra protocol.

36. The single-call communication method according to claim 27 or 28, wherein the single-call communication method further comprises:

the narrowband transceiver module receives first narrowband audio data besides a first narrowband single call signaling, wherein the first narrowband audio data follows a narrowband audio format;

37. The single-call communication method according to claim 27 or 28, wherein the system user code is used to generally identify the business affiliation of the relay device, the business affiliation of the first calling narrowband terminal device, and the business affiliation of the first called terminal device, respectively.

38. The single-call communication method according to claim 27 or 28, wherein the single-call communication method further comprises:

the broadband receiving and sending module receives a second broadband single-call signaling from the fusion server, wherein the second broadband single-call signaling at least comprises a second broadband single-call request identifier, a system user code of a second called narrowband terminal device and a system user code of a second calling terminal device;

39. The single call communication method according to claim 38, wherein the second calling terminal device is not in the signal coverage of the relay device, that is, the second calling terminal device is not able to directly communicate with the relay device.

40. The single-call communication method according to claim 38, wherein the enterprise code in the system user code of the second calling terminal device is the same as the enterprise code in the system user code of the second called narrowband terminal device.

41. The single-call communication method according to claim 38, wherein the enterprise code in the system user code of the second calling terminal device is different from the enterprise code in the system user code of the second called narrowband terminal device.

42. The single-call communication method according to claim 38, wherein said single-call communication method further comprises:

43. A non-transitory computer-readable storage medium having stored thereon computer-executable instructions that, when executed by processor circuitry, cause the processor circuitry to perform the single call communication method of any one of claims 27 to 42.

44. A single call communication method of narrow band and wide band is characterized in that the single call communication method is implemented by a fusion server, the fusion server is at least connected with a plurality of relay devices, a plurality of narrow band terminal devices, a plurality of wide band base stations and a plurality of wide band terminal devices in a communication way, and the plurality of relay devices, the plurality of narrow band terminal devices and the plurality of wide band terminal devices are respectively provided with system user codes;

the single call communication method at least comprises the following steps:

receiving a first broadband single-call signaling, where the first broadband single-call signaling at least includes a first broadband single-call request identifier, a system user code of a first calling terminal device, and a system user code of a first called terminal device, where the first calling terminal device and the first called terminal device are each one of the multiple narrowband terminal devices, the multiple broadband terminal devices, and the multiple transit devices;

if the first called terminal is determined to be on line, the first broadband single call signaling is sent to the first called terminal through one of the broadband base stations or directly; and

45. The single-call communication method according to claim 44, wherein the system user codes of the plurality of relay devices, the plurality of narrowband terminal devices and the plurality of wideband terminal devices each comprise x-bit enterprise code and m-bit identifier compliant with narrowband protocol, the m-bit identifier is composed of n-bit identity code and m-n-bit sub-code, wherein x, m and n are positive integers.

46. The single-call communication method according to claim 45, wherein the enterprise code is used to identify an enterprise to which the relay device belongs, an enterprise to which the first calling narrowband terminal device belongs, and an enterprise to which the first called narrowband terminal device belongs, respectively.

47. The single-call communication method according to claim 45 or 46, wherein the enterprise code of the system user code of the first calling terminal device is the same as the enterprise code of the system user code of the first called terminal.

48. The single-call communication method according to claim 45 or 46, wherein an enterprise code of the system user code of the first calling terminal device is different from an enterprise code of the system user code of the first called terminal.

49. The single-call communication method according to claim 45 or 46, wherein the system user code is used to generally identify the enterprise to which the relay device belongs, the enterprise to which the first calling narrowband terminal device belongs, and the enterprise to which the first called narrowband terminal device belongs.

50. The single-call communication method according to claim 45 or 46, wherein the first called terminal is not in a signal coverage of the relay device of the first calling terminal device, i.e. the first called terminal is not able to directly communicate with the relay device of the first calling terminal device.

51. The single call communication method according to claim 45 or 46,

the single call communication method further comprises:

52. The single-call communication method according to claim 45 or 46, wherein said single-call communication method further comprises:

53. A non-transitory computer-readable storage medium having stored thereon computer-executable instructions that, when executed by processor circuitry, cause the processor circuitry to perform a single call communication method according to any one of claims 44 to 52.