WO2017008765A1

WO2017008765A1 - Transmitting terminal, receiving station, and application data transmitting and receiving method

Info

Publication number: WO2017008765A1
Application number: PCT/CN2016/090218
Authority: WO
Inventors: 吴国稳; 张颖哲; 谢汉雄
Original assignee: 海能达通信股份有限公司
Priority date: 2015-07-16
Filing date: 2016-07-15
Publication date: 2017-01-19

Abstract

Disclosed are a transmitting terminal, receiving station, and application data transmitting and receiving method, the application data transmitting method comprising the following steps: writing, by a transmitting terminal, a preset string in a data type field in a fixed-width signaling frame, and writing one or a plurality of variable-length cells in an application data field in the fixed-width signaling frame, so as to obtain an expanded fixed-width signaling frame; and transmitting, by the transmitting terminal, the expanded fixed-width signaling frame to a receiving station, so that the receiving station can acquire a type of application data by reading the data type field, and can acquire content of the application data by reading the application data field. The technical solution provided in the present invention can directly use a fixed-width signaling frame to transmit application data via the above method, thereby optimizing a format of the application data to save resources, and improving communication efficiency and communication capacity.

Description

Method for transmitting and receiving transmitting terminal, receiving station and application data

[Technical Field]

The present invention relates to the field of digital wireless communications, and in particular, to a transmitting terminal, a receiving station, and a method for transmitting and receiving application data.

【Background technique】

In digital private network communication applications, the diversified application requirements of data services are becoming more and more intense. At the same time, in the private network communication, air interface communication resources become the bottleneck of the capacity of the wireless communication system due to the scarcity of spectrum resources and expensive communication equipment.

With the diversification and large-capacity development of data services, the bottleneck of air interface communication is becoming more and more obvious in data communication services, which seriously restricts the development of data applications.

At present, DMR (Digital Mobile Radio) digital trunking communication standard is an open standard designed and formulated by ETSI (European Telecommunications Standards Institute) to meet the needs of mobile communication in low-end professional and commercial users in Europe. The digital mobile radio system standard introduced in April 2005, the latest version is ETSI TS 102361-4).

The standard only defines short data services and location information formats based on the UDT (UDP-based Data Transfer Protocol) mechanism to support the transmission of application data, such as transmitting short data, extended address numbers, and users. Supplementary information and other data. The fixed-width signaling frame defined in the DMR standard cannot be used to transmit application data.

The main problem of the UDT mechanism is that the data format is fixed, and can only be limited to a limited type of application data defined in the UDT mechanism, such as transmitting short data, extended address numbers, and user supplementary information, and cannot transmit other types of application data, thereby Technical problems such as low communication efficiency and waste of resources.

[Summary of the Invention]

The technical problem mainly solved by the present invention is to provide a transmitting terminal, a receiving station and application data. The sending and receiving method enables the application data field of the fixed-width signaling frame to carry customized different types of application data, thereby optimizing the transmission format of the application data to save resources, and improving communication efficiency and communication capacity.

To solve the above technical problem, a technical solution adopted by the present invention is to provide a method for transmitting application data, including: a sending terminal writes a preset string in a data type field in a fixed-width signaling frame, and a preset word The string is used to define the type of application data to be transmitted, and one or more variable length cells are written in the application data field in the fixed width signaling frame, and the variable length cell includes a cell header and a cell body, and the variable length The cell carries the content of the application data, the cell header includes a cell header identifier, and the cell header identifier indicates the type of the variable length cell, thereby obtaining the extended fixed-width signaling frame; the transmitting terminal will expand the fixed-width signal The frame is sent to the receiving station, so that the receiving station can know the type of the application data by reading the data type field, and learn the content of the application data by reading the application data field.

The application data includes: environmental data, human health data, dedicated device remote control data, and/or global universal positioning information application data.

The preset string includes a first string. When the preset string is the first string, the type of the application data is global universal positioning information application data, and the type of the variable length cell includes a low position subframe and a position of the position information. Information sub-lower sub-frame, position information sub-high sub-frame, position information high-order sub-frame, speed information, altitude information and/or terminal identification code.

Wherein, when the type of the variable length cell is the low bit subframe of the location information, the content of the application data is the low bit data of the location information, and the transmitting terminal writes the low bit data of the location information into the cell body as the content of the variable length cell; If the type of the variable length cell is the sub-lower sub-frame of the location information, the content of the application data is the second-order data of the location information, and the transmitting terminal writes the second-order data of the location information into the cell body to serve as the variable-length cell. Content; and/or

When the type of the variable length cell is the sub-high-order sub-frame of the location information, the content of the application data is the second-order data of the location information, and the transmitting terminal writes the second-order data of the location information into the cell body as the content of the variable-length cell; and / or

When the type of the variable length cell is the high bit subframe of the location information, the content of the application data is the high position information. Data, the transmitting terminal writes the location information high-order data into the cell body as the content of the variable length cell; and/or

When the type of the variable length cell is speed information, the content of the application data is speed data, and the transmitting terminal writes the speed data into the cell body as the content of the variable length cell; and/or

When the type of the variable length cell is the altitude information, the content of the application data is the altitude data, and the transmitting terminal writes the altitude data into the cell body as the content of the variable length cell; and/or

When the type of the variable length cell is the terminal identification code, the content of the application data is the terminal identification code data, and the transmitting terminal writes the terminal identification code data into the cell body to serve as the content of the variable length cell.

The present invention further provides a method for receiving application data, comprising: receiving, by a receiving station, a fixed-width signaling frame sent by a transmitting terminal; wherein a data type field of the fixed-width signaling frame includes a preset string, and the preset string is used for Defining the type of the applied application data, the application data field of the fixed-width signaling frame includes one or more variable-length cells carrying the content of the application data, and the variable-length cell includes a cell header and a cell body, and the cell The header includes a cell header identifier, and the cell header identifier indicates the type of the variable length cell; the receiving station reads the data type field, learns the type of the application data, and reads the application data field to learn the content of the application data.

Wherein, when the type of the variable length cell is the low bit subframe of the location information, the content of the application data is the low bit data of the location information, and the transmitting terminal writes the low bit data of the location information into the cell body as the content of the variable length cell; /or

When the type of the variable length cell is the sub-lower sub-frame of the location information, the content of the application data is the sub-lower bit data of the location information, and the transmitting terminal writes the sub-lower bit data of the location information into the cell body to serve as the content of the variable length cell; and / or

When the type of the variable length cell is the high bit subframe of the location information, the content of the application data is the location information high data, and the transmitting terminal writes the location information high data into the cell body as the content of the variable length cell; and/or

The present invention further provides a transmitting terminal, comprising: a fixed-width signaling frame processing module, configured to write a preset string in a data type field in a fixed-width signaling frame, where the preset string is used to define a desired transmission Type of application data, and one or more variable length cells are written in the application data field in the fixed width signaling frame, wherein the variable length cell includes a cell header and a cell body, and the variable length cell carries application data. The content of the cell header includes a cell header identifier, the cell header identifier indicates the type of the variable length cell, thereby obtaining the extended fixed-width signaling frame, and the transmitting module is configured to use the extended fixed-width signaling frame Sending to the receiving station, so that the receiving station can know the type of the application data by reading the data type field, and know the content of the application data by reading the application data field.

The invention further provides a receiving station comprising:

a receiving module, configured to receive a fixed-width signaling frame sent by the sending terminal, where the data type field of the fixed-width signaling frame includes a preset string, where the preset string is used to define a type of the applied application data, and a fixed width The application data field of the signaling frame includes one or more variable length cells carrying the content of the application data, the variable length cell includes a cell header and a cell body, and the cell header includes a cell header identifier, and the cell header The identifier indicates the type of the variable length cell; the data reading module is configured to read the data type field, learn the type of the application data, and read the application data field to learn the content of the application data.

The present invention further provides a transmitting terminal comprising at least one processor, at least one wireless network interface, a memory, and at least one communication bus, the memory is configured to store program instructions, and the processor is configured to: execute the program instructions to set the width information Writing a preset string in the data type field in the frame, wherein the preset string is used to define the type of application data to be transmitted, and one or more writes in the application data field in the fixed-width signaling frame A variable length cell, wherein the variable length cell comprises a cell header and a cell body, the variable length cell carries content of the application data, the cell header includes a cell header identifier, and the cell header identifier indicates a type of variable length cell, Thereby obtaining an extended fixed-width signaling frame; executing program instructions to send the extended fixed-width signaling frame to the receiving station through the wireless network interface, so that the receiving station can learn the type of the application data by reading the data type field, and The content of the application data is learned by reading the application data field.

The present invention further provides a receiving station comprising: at least one processor, at least one wireless network interface, a memory, and at least one communication bus, the memory for storing program instructions, a processor, And the method is configured to: execute a program instruction to receive a fixed-width signaling frame sent by the transmitting terminal; where the data type field of the fixed-width signaling frame includes a preset string, and the preset string is used to define a type of the applied application data, The application data field of the fixed-width signaling frame includes one or more variable-length cells carrying the content of the application data, the variable-length cell includes a cell header and a cell body, and the cell header includes a cell header identifier, and a letter header The meta header identifies the type of variable length cell; the program instruction is executed to read the data type field, the type of the application data is known, and the application data field is read to know the content of the application data.

The beneficial effects of the present invention are: different from the prior art embodiments, the transmitting terminal, the receiving station, and the method for transmitting and receiving application data of the present invention, the data type field and application of the fixed-width signaling frame defined in the communication standard The data field is extended so that the application data field of the fixed-width signaling frame can carry different types of application data customized to optimize the transmission format of the application data to save resources, and improve communication efficiency and communication capacity.

[Description of the Drawings]

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present invention. Other drawings may also be obtained from those of ordinary skill in the art in light of the inventive work. among them:

1 is a block diagram of a system connection in accordance with an embodiment of the present invention;

2 is a schematic diagram of a data format of a variable length cell according to an embodiment of the present invention;

FIG. 3 is a flowchart of a method for transmitting application data according to an embodiment of the present invention; FIG.

4 is a flowchart of a method of receiving application data according to an embodiment of the present invention;

5 is a schematic structural diagram of a device according to a first embodiment of a transmitting terminal of the present invention;

6 is a schematic structural diagram of a device according to a first embodiment of the receiving station of the present invention;

7 is a schematic structural diagram of a device according to a second embodiment of a transmitting terminal of the present invention;

Figure 8 is a block diagram showing the structure of a second embodiment of the receiving station of the present invention.

DETAILED DESCRIPTION

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without departing from the inventive scope are the scope of the present invention.

First, it should be noted that the embodiment of the present invention mainly describes a CSBK frame and an LC frame defined in the DMR standard as an example of a fixed-width signaling frame, but the present invention should not be limited to only defined in the DMR communication system. The CSBK frame and the LC frame can also be applied to single frame data control signaling or multi-frame data control signaling in a communication system in which other fixed width signaling frames are defined.

Referring to FIG. 1, FIG. 1 is a block diagram of a system connection according to an embodiment of the present invention. As shown in FIG. 1, a wireless signaling connection is established between a transmitting terminal 10 and a receiving station 20 through a DMR digital trunking communication standard.

The terminal 10 and the receiving station 20 are both disposed in a wireless communication system.

It should be noted that the receiving station 20 disclosed in the embodiment of the present invention may specifically be a base station, a handheld terminal, or a service station.

In the embodiment of the present invention, a CSBK (Control Signaling Block) frame may be transmitted between the transmitting terminal 10 and the receiving station 20, where the format of the CSBK frame is as follows:

Table 1

In addition, an LC (Link Control, Embedded Control Signaling) frame may also be transmitted between the transmitting terminal 10 and the receiving station 20, where the format of the LC frame is as follows:

Table 2

As shown in Table 1, in the embodiment of the present invention, the LB field, the PF field, the CSBKO field, and the FID field of the CSBK frame are all consistent with the definition of the DMR standard, and no modification is made in the embodiment of the present invention.

Similarly, as shown in Table 2, in the embodiment of the present invention, the LB field, the PF field, the LCO field, and the FID field of the LC frame are all consistent with the definition of the DMR standard, and no modification is made in the embodiment of the present invention.

In the embodiment of the present invention, the data type field and the application data field of the CSBK frame or the LC frame are mainly extended and defined as an extended field.

Specifically, in the CSBK frame or the LC frame, the transmitting terminal 10 writes a predetermined string to the data. Type field to select the type of application data. For example, if 0000 is input to the field to identify the application data to be transmitted in the application data field of the CSBK frame or the LC frame as the global universal positioning information application data, it is worth noting that in the embodiment of the present invention, mainly for the global The transmission method of the positioning information application data is described. However, the embodiment of the present invention can also support the transmission of environmental data, human health data, dedicated device remote control data, and other application data by loading different sizes of variable length signals in the application data field. Yuan can meet different application needs.

Since the data type field in the CSBK frame or the LC frame is defined as 4 bits, the embodiment of the present invention can support 24=16 types of application data.

It is worth noting that when the number of data types is insufficient, subtype extensions can be applied through application data to support more application types.

Reference may be made to FIG. 2, which is a schematic diagram of a data format of a variable length cell according to an embodiment of the present invention. As shown in FIG. 2, each variable length cell 300 includes a cell header 301 and a cell body 302. In the embodiment of the present invention, application data to be transmitted may be set in one or more variable length cells 300. The type of the variable length cell 300 is determined by the cell header identifier written in the cell header 301.

The application data field is populated with one or more variable length cells 300, and in the application data field, the remaining space except one or more variable length cells is all padded with zeros.

It should be noted that, in the case where the transmitting terminal 10 and the receiving station 20 pre-arrange, the transmitting terminal 10 may also fill the remaining space except one or more variable length cells by 1 at all.

It is worth noting that the application data field length of the CSBK frame is 60 bits, and the application data field length of the LC frame is 52 bits. Therefore, in order to make full use of the application data field, the application data field of each frame can be filled with the required transmission. The maximum number of variable length cells, and when there is remaining space, the length of the remaining space is less than the smallest of the plurality of variable length cells.

Thus, each variable length cell 300 can be subtyped by cell header 301 to support more application data types.

Referring to FIG. 3, FIG. 3 is a flowchart of a method for transmitting application data according to an embodiment of the present invention. As shown in FIG. 3, a method for transmitting application data according to an embodiment of the present invention includes the following steps:

Step 101: The transmitting terminal 10 writes a preset string in a data type field in the fixed-width signaling frame, and writes one or more variable-length cells in the application data field in the fixed-width signaling frame to obtain Extended fixed-width signaling frame. In this step, the preset string is used to define the type of application data to be transmitted. The variable length cell includes a cell header and a cell body, and the variable length cell carries content of the application data, and the cell header includes a cell header. The identifier, the cell header identifier indicates the type of the variable length cell, and the step 101 specifically defines the type of the application data to be transmitted by writing the preset string in the data type field, and writes one or more in the application data field. The variable length cells are used as the content of the application data, and in the application data field, the variable length cell includes a cell header and a cell body, and the type of the variable length cell is determined by the cell header identifier written in the cell header. The remaining space except one or more variable length cells is all filled with 0 or 1.

Step 102: The transmitting terminal 10 transmits the extended fixed-width signaling frame to the receiving station 20. Thereby, the receiving station 20 knows the type of the application data by reading the data type field, and knows the content of the application data by reading the application data field. Moreover, when the application station 20 reads the application data field, the receiving station 20 can further learn the type of the variable length cell by reading the cell header identifier, and learn the content of the variable length cell by reading the cell body.

In this embodiment, the fixed-width signaling frame includes a CSBK frame and an LC frame. Since the digital type field of the CSBK frame or the LC frame is a 4-bit data length, the preset string may include the first string 0000, the second word. The string 0001, the third string 0002, the sixteenth string 1111, and the different preset strings are used to identify the type of application data to be transmitted in the application data field of the CSBK frame or the LC frame.

The application data types include: environmental data, human health data, dedicated device remote control data, global universal positioning information application data, and specific application data types can be identified by the above string.

In the embodiment of the present invention, it is assumed that when the preset string is the first string 0000, the type of the application data is global universal positioning information application data. It should be noted that the foregoing correspondence is only used for example description. In practical applications, the string corresponding to the global universal positioning information application data may be agreed to be any one of the second to sixteenth strings. It is not specifically limited.

The global universal positioning information application data specifically includes: location information low-order data, location information second-order data, location information second-order data, location information high-level data, speed data, altitude data And/or terminal identification code data.

In the embodiment of the present invention, the position information low-order data, the position information lower-order data, the position information secondary high-level data, the position information high-order data, the speed data, the altitude data, and the terminal identification code data may be respectively set in different variable length signals. The cell body of the element is identified by the cell header identifier of the variable length cell, and the variable length cell specifically includes: a low position sub-frame of position information, a sub-low sub-frame of position information, a sub-high sub-frame of position information, and position information. High sub-frame, speed information, altitude information, and terminal identification code. See Table 3 below for details:

信元头标识Cell header identifier	信元体长度(bits，位)Cell length (bits, bits)	信元总长度(bits，位)Total cell length (bits, bits)	说明Description
第一信元头标识0(000)First cell header identifier 0 (000)	1212	1515	位置信息低位子帧Position information low subframe
第二信元头标识1(001)Second cell header identifier 1 (001)	1212	1515	位置信息次低位子帧Position information sub-lower subframe
第三信元头标识2(010)Third cell header identification 2 (010)	1212	1515	位置信息次高位子帧Position information sub-high sub-frame
第四信元头标识3(011)Fourth cell header identification 3 (011)	1212	1515	位置信息高位子帧Location information high subframe
第五信元头标识4(100)Fifth cell header identification 4 (100)	99	1212	速度信息Speed information
第六信元头标识5(101)Sixth cell header identification 5 (101)	1515	1818	海拔高度信息Altitude information
第七信元头标识6(110)Seventh Cell Header Logo 6 (110)	24twenty four	2727	终端识别码Terminal identification code
第八信元头标识7(111)Eighth Cell Header Identification 7 (111)	保留Reserved

table 3

As shown in Table 3, when the preset string is the first string 0000 and the type of the selected application data is global universal positioning information application data, the type of the variable length cell includes the lower sub-frame of the position information and the lower-order position information. Subframe, position information sub-highest sub-frame, position information high-order sub-frame, speed information, altitude information, and/or terminal identification code.

The cell header identifiers of the variable length cells are respectively a first cell header identifier 000, a second cell header identifier 001, a third cell header identifier 010, a fourth cell header identifier 011, and a fifth cell. The header identifier 100, the sixth cell header identifier 101, and the seventh cell header identifier 110. The receiving station 20 can learn the type of the variable length cell by reading the cell header identifier, and can learn the content of the variable length cell by reading the cell body content.

It should be noted that, in the embodiment of the present invention, the length of the cell header is not limited to only three bits, and the correspondence between the cell header identifier and the variable length cell type is not limited to the above table. . In an actual application, the length of the cell header can be set according to the number of types of variable length cells, and the type of the variable length cell can be selected according to the actual communication application scenario, which is not limited by the present invention.

Please continue to see Table 3, where:

When the type of the variable length cell is the low bit subframe of the location information, the content of the application data is the low data of the location information, and the corresponding variable length cell includes a 3-bit cell header and a 12-bit cell body, and the total cell length For 15 bits, the transmitting terminal 10 writes the first cell header identifier 000 into the cell header to identify that the type of the variable length cell is the low bit subframe of the location information, and writes the low information of the location information into the cell body as The content of this variable length cell.

When the type of the variable length cell is the sub-lower sub-frame of the location information, the content of the application data is the second-order data of the location information, and the corresponding variable-length cell includes a 3-bit cell header and a 12-bit cell body, and the cell The total length is 15 bits, and the transmitting terminal 10 writes the second cell header identifier 001 into the cell header to identify that the type of the variable length cell is the sub-lower sub-frame of the location information, and writes the lower-order data of the location information into the cell. The content in the body as the variable length cell.

When the type of the variable length cell is the sub-high-order sub-frame of the location information, the content of the application data is the second-order data of the location information, and the corresponding variable-length cell includes a 3-bit cell header and a 12-bit cell body, and the cell The total length is 15 bits, and the transmitting terminal 10 writes the third cell header identifier 010 into the cell header to identify that the type of the variable length cell is the sub-high-order sub-frame of the location information, and writes the second-order data of the location information to the cell. The content in the body as the variable length cell.

When the type of the variable length cell is the high-order subframe of the location information, the content of the application data is the location information high-order data, and the variable-length cell includes a 3-bit cell header and a 12-bit cell body, and the total length of the cell is 15 bits. The transmitting terminal 10 writes the fourth cell header identifier 011 into the cell header to identify that the type of the variable length cell is the location information high-order subframe, and writes the location information high-order data into the cell body to serve as the variable length. The content of the cell.

When the type of the variable length cell is speed information, the content of the application data is speed data, and the variable length cell includes a 3-bit cell header and a 9-bit cell body, and the total length of the cell is 12 bits, and the transmitting terminal 10 The fifth cell header identifier 100 is written in the cell header to identify the type of the variable length cell as velocity information, and the velocity data is written into the cell body as the content of the variable length cell.

When the type of the variable length cell is the altitude information, the content of the application data is the altitude data, and the altitude information includes a 3-bit cell header and a 15-bit cell body, and the total length of the cell is 18 bits, and the transmitting terminal 10 Writing the sixth cell header identifier 101 into the cell header to identify the type of the variable length cell as the altitude Information, the altitude data is written into the cell body as the content of the variable length cell.

When the type of the variable length cell is the terminal identification code, the content of the application data is terminal identification code data, and the terminal identification code includes a 3-bit cell header and a 24-bit cell body, and the total length of the cell is 27 bits, and the transmitting terminal 10: Write the seventh cell header identifier 110 into the cell header to identify the type of the variable length cell as a terminal identifier, and write the terminal identifier data into the cell body as the content of the variable length cell.

It should be noted that, in the present invention, the number of bits of the cell header and the cell body is not limited to the above, and the number of bits of the cell header and the cell body can be adjusted according to actual needs, depending on the compression algorithm used. To determine the number of digits.

Since the variable length cells can be combined and set in the application data field of the CSBK frame or the LC frame, the application data field of the CSBK frame or the LC frame can be fully utilized to carry the customized different types of application data, thereby effectively improving The location information transmission capacity of the wireless communication system.

The variable length cell can be uploaded to the application data field of the CSBK frame or the LC frame for uploading, so that the communication channel of different unit lengths such as the CSBK frame and the LC frame can be flexibly supported. In addition, since a plurality of variable length cells are set to carry application data, the information granulation idea is used to fill the CSBK frame and the fixed length application data field in the LC frame, so that various information combinations can be flexibly supported, and information transmission can be improved. Capacity and maximize information transfer efficiency.

In the embodiment of the present invention, the sending terminal 10 may select to upload a CSBK frame and an LC frame carrying different application data to the receiving station 20 according to actual needs, so as to adapt to different application scenarios, and the application data is used as global universal positioning information application data. To give specific instructions:

The method for uploading global universal positioning information application data disclosed in the embodiments of the present invention has the following three implementation manners:

The first implementation manner is that the transmitting terminal 10 actively uploads the positioning information to the receiving station 20 through the CSBK frame. At this time, the positioning information includes initial location information and subsequent location change information, and the transmitting terminal 10 first uploads the initial location information to the receiving station 20, and subsequently When the location changes, the transmitting terminal 10 uploads the updated location information to the receiving station 20.

For the initial location information, the transmitting terminal 10 needs to upload two CSBK frames to the receiving station 20 first. The custom field settings for the first CSBK frame are as follows:

Data type field of CSBK frame: 0000

Application data field of CSBK frame: location information high-order subframe (15 bits, including 3-bit cell header and 12-bit cell body, 3-bit cell header content is fourth cell header identifier 011, 12-bit The cell body content is the location information high-order data), the location information sub-high-order subframe (15 bits, including the 3-bit cell header and the 12-bit cell body, and the 3-bit cell header content is the third cell header identifier) 010, the 12-bit cell body content is the position information sub-high-order data), the terminal identification code (27 bits, including the 3-bit cell header and the 24-bit cell body, and the 3-bit cell header content is the seventh letter) The meta-header 110, the 24-bit cell body content is the terminal identification code data, a total of 57 bits. Since the total length of the application data field of the CSBK frame is 60 bits, the remaining 3 bits are 0 (pre-received by the transmitting terminal 10) Station 20 agreed) padding.

The custom field settings for the second CSBK frame are as follows:

Data type field of CSBK frame: 0000

Application data field of CSBK frame: low-order sub-frame of position information (15 bits, including 3-bit cell header and 12-bit cell body, 3-bit cell header content is first cell header identifier 000, 12-bit The cell body content is the position information low-order data), the position information sub-lower sub-frame (15 bits, including the 3-bit cell header and the 12-bit cell body, and the 3-bit cell header content is the second cell header identifier) 001, 12-bit cell body content is position information sub-lower data), terminal identification code (27 bits, including 3-bit cell header and 24-bit cell body, and 3-bit cell header content is the seventh letter) The meta-header 110, the 24-bit cell body content is the terminal identification code data, a total of 57 bits. Since the total length of the application data field of the CSBK frame is 60 bits, the remaining three bits are padded with 0s.

When the location information of the subsequent transmitting terminal 10 changes, the transmitting terminal 10 may upload a CSBK frame to inform the receiving station 20 to send the latest location of the terminal 10. The CSBK frame may include the following three cases:

When the position change of the transmitting terminal 10 needs to be represented by two subframes (for example, the moving distance is greater than 100 meters but less than 9 kilometers), the subsequent position change information may be used by the current time sending terminal 10 to obtain the position information low-order data and the position information. The low-order data is used to represent the CSBK frame including the low-order sub-frame of the position information and the sub-lower sub-frame of the position information, wherein the re-uploaded position information is low. The sub-lower sub-frame of the frame and position information is used to reflect the current position after the position change occurs. The custom field of the CSBK frame is set as follows:

Data type field of CSBK frame: 0000

When the position change needs to be represented by 1 subframe (for example, the moving distance is less than 100 meters), the subsequent CSBK frame can carry the speed information in addition to the position information change information.

The custom fields of the CSBK frame are set as follows:

Data type field of CSBK frame: 0000

Application data field of CSBK frame: low-order sub-frame of position information (15 bits, including 3-bit cell header and 12-bit cell body, 3-bit cell header content is first cell header identifier 000, 12-bit The cell body content is the location information low-order data), the speed information (12 bits, including the 3-bit cell header and the 9-bit cell body, and the 3-bit cell header content is the fifth cell header identifier 100, 12 bits) The cell body content is the speed data), the terminal identification code (27 bits, including the 3-bit cell header and the 24-bit cell body, and the 3-bit cell header content is the seventh cell header identifier 110, 24 bits) The content of the cell body is terminal identification code data), a total of 54 bits. Since the total length of the application data field of the CSBK frame is 60 bits, the remaining 6 bits are padded with 0s.

Therefore, when the position change needs to be represented by 1 subframe, since the position change is not large (within 100 meters), only the position information lower subframe of the current time needs to be re-uploaded instead of the original position information lower subframe. Alternatively, the subsequent CSBK frame may carry the altitude information information instead of the speed information in addition to the updated location information. In this case, the custom field of the subsequent CSBK frame is set. Set as follows:

Data type field of CSBK frame: 0000

Application data field of CSBK frame: low-order sub-frame of position information (15 bits, including 3-bit cell header and 12-bit cell body, 3-bit cell header content is first cell header identifier 000, 12-bit The cell body content is the location information low-order data), the altitude information (18 bits, including the 3-bit cell header and the 15-bit cell body, and the 3-bit cell header content is the sixth cell header identifier 101, 15 The bit body content of the bit is the altitude data), the terminal identification code (27 bits, including the 3-bit cell header and the 24-bit cell body, and the 3-bit cell header content is the seventh cell header identifier 110, The 24-bit cell body content is the terminal identification code data), which is 60 bits in total. Since the application data field of the CSBK frame has a total length of 60 bits, it is not necessary to fill 0.

In the second embodiment, the receiving station 20 may first send a positioning information request to the transmitting terminal 10. The transmitting terminal 10 may request to upload a CSBK frame to the receiving station 20 to respond to the positioning information by responding to the positioning information.

The extension fields of the CSBK frame are defined as follows:

Data type field of CSBK frame: 0000

Application data field of CSBK frame: location information high-order subframe (15 bits, including 3-bit cell header and 12-bit cell body, 3-bit cell header content is fourth cell header identifier 011, 12-bit The cell body content is the location information high-order data), the location information sub-high-order subframe (15 bits, including the 3-bit cell header and the 12-bit cell body, and the 3-bit cell header content is the third cell header identifier) 010, the 12-bit cell body content is the position information sub-high-order data), the position information low-order sub-frame (15 bits, including the 3-bit cell header and the 12-bit cell body, and the 3-bit cell header content is the first A cell header identifies 000, the 12-bit cell body content is the position information low-order data), the position information sub-lower sub-frame (15 bits, including the 3-bit cell header and the 12-bit cell body, and the 3-bit letter) The content of the meta-header is 001, the content of the 12-bit cell is the lower-order data of the location information, which is 60 bits. Since the total length of the application data field of the CSBK frame is 60 bits, there is no remaining bit. 0.

When the position change amount of the transmitting terminal 10 needs to be carried by using two subframes (for example, the moving distance is greater than 100 meters but less than 9 kilometers), a CSBK frame may be additionally sent to update the location information. Achieve a mobile coverage of approximately 9 kilometers and use the remaining space to store altitude information.

The custom fields of the CSBK frame are as follows:

Data type field of CSBK frame: 0000

Application data field of CSBK frame: low-order sub-frame of position information (15 bits, including 3-bit cell header and 12-bit cell body, 3-bit cell header content is first cell header identifier 000, 12-bit The cell body content is the position information low-order data), the position information sub-lower sub-frame (15 bits, including the 3-bit cell header and the 12-bit cell body, and the 3-bit cell header content is the second cell header identifier) 001, 12-bit cell body content is position information sub-lower data), speed information (12 bits, including 3-bit cell header and 9-bit cell body, and 3-bit cell header content is fifth cell) The head identifier 100, the 12-bit cell body content is the speed data), the altitude information information (18 bits, including the 3-bit cell header and the 15-bit cell body, and the 3-bit cell header content is the sixth letter) The meta tag identifier 101, the 15-bit cell body content is the altitude data), since the application data field of the CSBK frame has a total length of 60 bits, there is no remaining bit, and no padding is required.

The third implementation manner is that the transmitting terminal 10 actively uploads the positioning information to the receiving station 20 by transmitting the LC frame. Similarly, the positioning information includes initial location information and subsequent location change information, and the transmitting terminal 10 first uploads two LC frames to receive. For station 20, the custom fields for the first LC frame are as follows:

Data type field of the LC frame: 0000

Application data field of the LC frame: location information high-order subframe (15 bits, including 3-bit cell header and 12-bit cell body, 3-bit cell header content is fourth cell header identifier 011, 12-bit The cell body content is the location information high-order data), the location information sub-high-order subframe (15 bits, including the 3-bit cell header and the 12-bit cell body, and the 3-bit cell header content is the third cell header identifier) 010, the 12-bit cell body content is the position information second-order data), the speed information (12 bits, including the 3-bit cell header and the 9-bit cell body, and the 3-bit cell header content is the fifth cell) The header identifier 100, the 12-bit cell volume content is speed data), a total of 42 bits. Since the total length of the application data field of the LC frame is 52 bits, the remaining 10 slots are supplemented by 0.

The custom fields for the second LC frame are as follows:

Data type field of the LC frame: 0000

Application data field of the LC frame: Location information low-order subframe (15 bits, including 3-bit cell header and 12 bits) The cell body of the bit, the content of the 3-bit cell header is the first cell header identifier 000, the 12-bit cell body content is the position information low-order data), and the position information sub-lower sub-frame (15 bits, including 3 bits) The cell header and the 12-bit cell body, the 3-bit cell header content is the second cell header identifier 001, the 12-bit cell body content is the position information sub-lower data), and the altitude information information (18 bits, Including a 3-bit cell header and a 15-bit cell body, the 3-bit cell header content is the sixth cell header identifier 101, and the 15-bit cell body content is altitude data), a total of 48 bits, due to LC The total application data field of the frame is 52 bits long, so the remaining 4 slots are supplemented with 0.

When the position change of the transmitting terminal 10 needs to be represented by two subframes (for example, the moving distance is greater than 100 meters but less than 9 kilometers), the subsequent position change information may be used by the current time sending terminal 10 to obtain the position information low-order data and the position information. The low-order data is used to represent that the LC frame including the low-order sub-frame of the location information and the sub-lower sub-frame of the location information needs to be re-uploaded, wherein the re-uploaded position information lower sub-frame and the sub-sub-frame of the position information are used to reflect the position change. The current location.

The custom fields of the LC frame are as follows:

Data type field of the LC frame: 0000

Application data field of the LC frame: low-order subframe of position information (15 bits, including a 3-bit cell header and a 12-bit cell body, and the 3-bit cell header content is the first cell header identifier 000, 12-bit The cell body content is the position information low-order data), the position information sub-lower sub-frame (15 bits, including the 3-bit cell header and the 12-bit cell body, and the 3-bit cell header content is the second cell header identifier) 001, 12-bit cell body content is position information sub-lower data), speed information (12 bits, including 3-bit cell header and 9-bit cell body, and 3-bit cell header content is fifth cell) The header identifier 100, the 12-bit cell volume content is speed data), a total of 42 bits. Since the application data field of the LC frame has a total length of 52 bits, the remaining 10 bits are padded with 0s.

Similarly, when the position continues to change, the speed information in the subsequent LC frame can also be replaced with the altitude information as follows:

Data type field of the LC frame: 0000

Application data field of the LC frame: low-order subframe of position information (15 bits, including a 3-bit cell header and a 12-bit cell body, and the 3-bit cell header content is the first cell header identifier 000, 12-bit The contents of the cell are in place Set information low-order data), position information sub-lower sub-frame (15 bits, including 3-bit cell header and 12-bit cell body, 3-bit cell header content is second cell header identifier 001, 12-bit The cell body content is the position information sub-lower data), the altitude information information (18 bits, including the 3-bit cell header and the 15-bit cell body, and the 3-bit cell header content is the sixth cell header identifier 101) The 15-bit cell body content is the altitude data), which is 48 bits. Since the total length of the application data field of the LC frame is 52 bits, the remaining 4 slots are supplemented by 0. Therefore, the embodiment of the present invention can flexibly support the transmission terminal 10 to actively upload and passively pull up two data transmission modes.

In summary, the method for transmitting application data in this embodiment can be directly defined by extending the data type field and the application data field in the CSBK frame or the LC frame in the DMR standard, which is different from the prior art implementation. Application data transmission using CSBK frames or LC frames can optimize the format of application data to save resources and improve communication efficiency and communication capacity.

Referring to FIG. 4, FIG. 4 is a flowchart of a method for receiving application data according to an embodiment of the present invention. As shown in FIG. 4, the method for receiving application data of the present invention includes the following steps:

Step 201: The receiving station 20 receives the fixed-width signaling frame sent by the sending terminal 10, where the data type field of the fixed-width signaling frame includes a preset string, and the preset string is used to define the type of the applied application data. The application data field of the fixed-width signaling frame includes one or more variable-length cells carrying the content of the application data, the variable-length cell includes a cell header and a cell body, and the cell header includes a cell header identifier, and a letter header The meta header identifies the type of variable length cell, and the remaining space except one or more variable length cells is all padded with 0 or 1;

Step 202: The receiving station 20 reads the data type field to learn the type of the application data, and reads the application data field to learn the content of the application data.

In this embodiment, the fixed width signaling frame includes a CSBK frame and an LC frame.

Optionally, the preset string includes a first string, and the application data includes: environment data, human health data, dedicated device remote control data, and/or global universal positioning information application data, where the preset string is the first string. At the time, the type of application data is global universal positioning information application data.

Optionally, the types of variable length cells include location information lower subframe, location information lower subframe, location information secondary subframe, location information upper subframe, speed information, altitude information, and/or terminal Identifier.

When the type of variable length cell is altitude information, the content of the application data is altitude data, sea The height information includes a 3-bit cell header and a 15-bit cell body, and the total length of the cell is 18 bits. The transmitting terminal 10 writes the sixth cell header identifier 101 into the cell header to identify the variable length cell. The type is the altitude information, and the altitude data is written into the cell body as the content of the variable length cell.

When the type of the variable length cell is the terminal identification code, the content of the application data is terminal identification code data, and the terminal identification code includes a 3-bit cell header and a 24-bit cell body, and the total length of the cell is 27 bits, and the transmitting terminal 10: Write the seventh cell header identifier 110 into the cell header to identify the type of the variable length cell as a terminal identifier, and write the terminal identifier data into the cell body as the content of the variable length cell. In this embodiment, the receiving station 20 can learn the type of the application data by reading the data type field according to the rules disclosed in the previous embodiment, and read the application data field to learn the content of the application data.

Moreover, when reading the application data field, the receiving station 20 can read the variable length cell one by one, and determine the type and length of the cell body by determining the cell header identifier in the cell header of the variable length cell, and according to The length of the cell body reads the content of the cell body, and processes the content of the cell body according to the type of the cell body, such as displaying the content of the cell body to remind the user, or multiple cell bodies. The contents are combined to calculate the status of the transmitting terminal and the like.

Therefore, the method for receiving application data disclosed in this embodiment can directly use the CSBK frame or the LC frame for application data transmission by extending the definition of the data type field and the application data field in the CSBK frame or the LC frame in the DMR standard. .

Referring to FIG. 5, FIG. 5 is a schematic structural diagram of a device according to a first embodiment of the present invention. As shown in FIG. 5, the transmitting terminal 10 includes:

The fixed-width signaling frame processing module 401 is configured to write a preset string in a data type field in the fixed-width signaling frame, where the preset string is used to define a type of application data to be transmitted, and a fixed width One or more variable length cells are written in the application data field in the signaling frame, wherein the variable length cell includes a cell header and a cell body, the variable length cell carries content of the application data, and the cell header contains the cell a header identifier, the cell header identifier indicating a type of variable length cell, thereby obtaining an extended fixed-width signaling frame, and all remaining spaces except one or more variable-length cells are all padded with 0 or 1;

The sending module 402 is configured to send the extended fixed-width signaling frame to the receiving station, so that the receiving station can The type of the application data is obtained by reading the data type field, and the content of the application data is obtained by reading the application data field.

Optionally, the fixed width signaling frame includes a CSBK frame and an LC frame.

Optionally, the application data includes: environmental data, human health data, dedicated device remote control data, and/or global universal positioning information application data.

Optionally, the preset string includes a first string. When the preset string is the first string, the type of the application data is global universal positioning information application data, and the type of the variable length cell includes a low position subframe of the position information. Position information sub-lower sub-frame, position information sub-high sub-frame, position information high sub-frame, speed information, altitude information, and/or terminal identification code

When the type of the variable length cell is the low bit subframe of the location information, the content of the application data is the location information low bit data, and the fixed bandwidth signaling frame processing module writes the location information low bit data into the cell body to serve as the variable length cell. Content; and/or

When the type of the variable length cell is the sub-lower sub-frame of the location information, the content of the application data is the sub-lower bit data of the location information, and the fixed-width signaling frame processing module writes the sub-lower bit data of the location information into the cell body as the variable length. The content of the cell; and/or

When the type of the variable length cell is the sub-high-order sub-frame of the location information, the content of the application data is the sub-high-order data of the location information, and the fixed-width signaling frame processing module writes the sub-high-order data of the location information into the cell body as the variable length. The content of the cell; and/or

When the type of the variable length cell is the high bit subframe of the location information, the content of the application data is the location information high-order data, and the fixed-width signaling frame processing module writes the location information high-order data into the cell body to serve as the variable length cell. Content; and/or

When the type of the variable length cell is speed information, the content of the application data is speed data, and the fixed width signaling frame processing module writes the speed data into the cell body as the content of the variable length cell; and/or

When the type of the variable length cell is the altitude information, the content of the application data is the altitude data, and the fixed width signaling frame processing module writes the altitude data into the cell body as the content of the variable length cell; and / Or

When the type of the variable length cell is the terminal identification code, the content of the application data is the terminal identification code data, and the fixed width signaling frame processing module writes the terminal identification code data into the cell body to serve as the content of the variable length cell.

Referring to FIG. 6, FIG. 6 is a schematic structural diagram of a device according to a first embodiment of the receiving station of the present invention. As shown in FIG. 6, the receiving station 20 includes:

The receiving module 501 is configured to receive a fixed-width signaling frame sent by the sending terminal, where the data type field of the fixed-width signaling frame includes a preset string, where the preset string is used to define a type of the applied application data, The application data field of the wide signaling frame includes one or more variable length cells carrying the content of the application data, the variable length cell includes a cell header and a cell body, and the cell header includes a cell header identifier, and the cell header The header identifier indicates the type of the variable length cell, and the remaining space except one or more variable length cells is all padded with 0 or 1;

The data reading module 502 is configured to read the data type field, learn the type of the application data, and read the application data field to learn the content of the application data.

When the type of the variable length cell is the low bit subframe of the location information, the content of the application data is the location information low bit data, and the transmitting terminal writes the location information low bit data into the cell body as the content of the variable length cell; and/or

When the type of the variable length cell is the sub-high-order sub-frame of the location information, the content of the application data is the second-order data of the location information, and the transmitting terminal writes the second-order data of the location information into the cell body to serve as the variable-length cell. Content; and/or

Referring to FIG. 7, FIG. 7 is a schematic structural diagram of a device according to a second embodiment of the present invention. As shown in FIG. 7, the transmitting terminal 10 includes at least one processor 601, at least one wireless network interface 602, and a memory 603. And at least one communication bus 604, the memory 603 is configured to store program instructions, and the processor 601 is configured to:

Executing program instructions to write a preset string in a data type field in a fixed-width signaling frame, wherein the preset string is used to define a type of application data to be transmitted, and application data in the fixed-width signaling frame One or more variable length cells are written in the field, wherein the variable length cell includes a cell header and a cell body, the variable length cell carries content of the application data, the cell header includes a cell header identifier, and the cell header identifier Representing a type of variable length cell, thereby obtaining an extended fixed-width signaling frame, and all remaining spaces except one or more variable-length cells are all padded with 0 or 1;

Executing program instructions to send the extended fixed-width signaling frame to the receiving station through the wireless network interface, so that the receiving station can learn the type of the application data by reading the data type field, and obtain the content of the application data by reading the application data field. .

Optionally, the preset string includes a first string. When the preset string is the first string, the type of the application data is global universal positioning information application data, and the type of the variable length cell includes a low position subframe of the position information. Position information sub-lower sub-frame, position information sub-high sub-frame, position information high-order sub-frame, speed information, altitude information, and/or terminal identification code.

When the type of the variable length cell is the low bit subframe of the location information, the content of the application data is the location information low bit data, and the processor 601 executes the program instruction to write the location information low bit data into the cell body as the variable length cell. Content; and/or

When the type of the variable length cell is the sub-lower sub-frame of the location information, the content of the application data is the sub-lower bit data of the location information, and the processor 601 executes the program instruction to write the sub-lower bit data of the location information into the cell body as the variable length. The content of the cell; and/or

When the type of the variable length cell is the sub-high-order sub-frame of the location information, the content of the application data is the second-order data of the location information, and the processor 601 executes the program instruction to write the sub-high-order data of the location information into the cell body as the variable length. The content of the cell; and/or

When the type of the variable length cell is the position information high-order sub-frame, the content of the application data is the position information high-order data, and the processor 601 executes the program instruction to write the position information high-order data into the cell body as the variable length cell. Content; and/or

When the type of the variable length cell is speed information, the content of the application data is speed data, and the processor 601 executes the program instruction to write the speed data into the cell body as the content of the variable length cell; and/or

When the type of the variable length cell is the altitude information, the content of the application data is the altitude data, and the processor 601 executes the program instruction to write the altitude data into the cell body as the content of the variable length cell; and / or

When the type of the variable length cell is the terminal identification code, the content of the application data is the terminal identification code data, and the processor 601 executes the program instruction to write the terminal identification code data into the cell body as the content of the variable length cell.

Referring to FIG. 8, FIG. 8 is a schematic structural diagram of a device according to a second embodiment of the receiving station of the present invention. As shown in FIG. 8, the receiving station 20 includes: at least one processor 701, at least one wireless network interface 702, and a memory 703, and at least one communication bus 704, the memory 703 is configured to store program instructions, and the processor 701 is configured to:

Executing program instructions to control the wireless network interface 702 to receive a fixed-width signaling frame uploaded by the transmitting terminal, wherein the transmitting terminal extends the definition of the data type field and the application data field in the fixed-width signaling frame, specifically by writing in the data type field Entering a preset string to define the type of application data to be transmitted, and writing one or more variable length cells in the application data field as the content of the application data, and in the application data field, the variable length cell includes The cell header and the cell body, the type of the variable length cell is determined by the cell header identifier written in the cell header, and the remaining space except one or more variable length cells is all padded with 0;

The program instructions are executed to read the data type field to know the type of the application data, and read the application data field to know the content of the application data.

Therefore, the present invention extends the data type field and the application data field of the fixed-width signaling frame defined in the communication standard by extending the data type field and the application data field of the fixed-width signaling frame defined in the communication standard, The application data field of the fixed-width signaling frame can carry different types of application data customized to optimize the transmission format of the application data to save resources, and improve communication efficiency and communication capacity.

The above is only the embodiment of the present invention, and is not intended to limit the scope of the invention, and the equivalent structure or equivalent process transformation of the present invention and the contents of the drawings may be directly or indirectly applied to other related technologies. The fields are all included in the scope of patent protection of the present invention.

Claims

A method for transmitting application data, comprising:

The transmitting terminal writes a preset string in a data type field in the fixed-width signaling frame, where the preset string is used to define a type of application data to be transmitted, and is applied in the fixed-width signaling frame. One or more variable length cells are written in the data field, the variable length cell includes a cell header and a cell body, the variable length cell carries content of the application data, and the cell header includes a letter a meta-header identifier, where the cell header identifier indicates a type of the variable-length cell, thereby obtaining an extended fixed-width signaling frame;

Transmitting, by the sending terminal, the extended fixed-width signaling frame to the receiving station, so that the receiving station can learn the type of the application data by reading the data type field, and learn by reading the application data field. The content of the application data.
The method according to claim 1, wherein the application data comprises: environmental data, human health data, dedicated device remote control data, and/or global universal positioning information application data.
The method according to claim 2, wherein the preset string comprises a first string, and when the preset string is the first string, the type of the application data is global Positioning information application data, the types of variable length cells include position information lower sub-frame, position information sub-low sub-frame, position information sub-high sub-frame, position information high sub-frame, speed information, altitude information, and/or terminal Identifier.
The method of claim 3 wherein:

When the type of the variable length cell is the low bit subframe of the location information, the content of the application data is location information low bit data, and the sending terminal writes the location information low bit data into the cell body to As the content of the variable length cell; and/or

When the type of the variable length cell is the sub-lower sub-frame of the location information, the content of the application data is the sub-lower bit data of the location information, and the transmitting terminal sets the second low bit of the location information. Written into the cell body as the content of the variable length cell; and/or

When the type of the variable length cell is the sub-high-order sub-frame of the location information, the content of the application data is the sub-high-order data of the location information, and the sending terminal writes the sub-high-order data of the location information into the cell. Content in the body as the variable length cell; and/or

When the type of the variable length cell is the high bit subframe of the location information, the content of the application data is location information high data, and the sending terminal writes the location information high data into the cell body to As the content of the variable length cell; and/or

When the type of the variable length cell is the speed information, the content of the application data is speed data, and the sending terminal writes the speed data into the cell body to serve as the variable length cell. Content; and/or

When the type of the variable length cell is the altitude information, the content of the application data is altitude data, and the sending terminal writes the altitude data into the cell body to become the length of the cell. The content of the cell; and/or

When the type of the variable length cell is the terminal identification code, the content of the application data is terminal identification code data, and the transmitting terminal writes the terminal identification code data into the cell body to serve as the present The content of variable length cells.
A method for receiving application data, comprising:

Receiving, by the receiving station, a fixed-width signaling frame sent by the transmitting terminal, where the data type field of the fixed-width signaling frame includes a preset string, where the preset string is used to define a type of the applied application data. Depicting that the application data field of the wide signaling frame includes one or more variable length cells carrying the content of the application data, the variable length cell includes a cell header and a cell body, where the cell header is in the cell header And including a cell header identifier, where the cell header identifier indicates a type of the variable length cell;

The receiving station reads the data type field, learns the type of the application data, and reads the application data field to learn the content of the application data.
The method according to claim 5, wherein the application data comprises: Environmental data, human health data, dedicated device remote control data, and/or global universal positioning information application data.
The method according to claim 6, wherein the preset string comprises a first string, and when the preset string is the first string, the type of the application data is universal Positioning information application data, the types of variable length cells include position information lower sub-frame, position information sub-low sub-frame, position information sub-high sub-frame, position information high sub-frame, speed information, altitude information, and/or terminal Identifier.
The method of claim 7 wherein:

When the type of the variable length cell is the low bit subframe of the location information, the content of the application data is location information low bit data, and the sending terminal writes the location information low bit data into the cell body to As the content of the variable length cell; and/or

When the type of the variable length cell is the sub-lower sub-frame of the location information, the content of the application data is the sub-lower data of the location information, and the transmitting terminal writes the sub-lower data of the location information into the cell. Content in the body as the variable length cell; and/or

When the type of the variable length cell is the sub-high-order sub-frame of the location information, the content of the application data is the sub-high-order data of the location information, and the sending terminal writes the sub-high-order data of the location information into the cell. Content in the body as the variable length cell; and/or

When the type of the variable length cell is the high bit subframe of the location information, the content of the application data is location information high data, and the sending terminal writes the location information high data into the cell body to As the content of the variable length cell; and/or

When the type of the variable length cell is the speed information, the content of the application data is speed data, and the sending terminal writes the speed data into the cell body to serve as the variable length cell. Content; and/or

When the type of the variable length cell is the altitude information, the content of the application data is altitude data, and the sending terminal writes the altitude data into the cell body. As the content of the variable length cell; and/or

When the type of the variable length cell is the terminal identification code, the content of the application data is terminal identification code data, and the transmitting terminal writes the terminal identification code data into the cell body to serve as the present The content of variable length cells.
A transmitting terminal, comprising:

a fixed-width signaling frame processing module, configured to write a preset string in a data type field in the fixed-width signaling frame, where the preset string is used to define a type of application data to be transmitted, and Writing one or more variable length cells in the application data field in the wide signaling frame, wherein the variable length cell includes a cell header and a cell body, and the variable length cell carries the application data Content, the cell header includes a cell header identifier, and the cell header identifier indicates a type of the variable length cell, thereby obtaining an extended fixed-width signaling frame;

a sending module, configured to send the extended fixed-width signaling frame to the receiving station, so that the receiving station can learn the type of the application data by reading the data type field, and by reading the application data field Know the content of the application data.
The transmitting terminal according to claim 9, wherein the application data comprises: environmental data, human health data, dedicated device remote control data, and/or global universal positioning information application data.
The transmitting terminal according to claim 10, wherein the preset string comprises a first string, and when the preset string is the first string, the type of the application data is global Universal positioning information application data, the types of variable length cells include position information lower sub-frame, position information sub-low sub-frame, position information sub-high sub-frame, position information high sub-frame, speed information, altitude information, and/or Terminal identification code.
A receiving station, comprising:

a receiving module, configured to receive a fixed-width signaling frame sent by the sending terminal, where the data type field of the fixed-width signaling frame includes a preset string, where the preset string is used to define the transmitted a type of application data, where the application data field of the fixed-width signaling frame includes one or more variable-length cells carrying content of the application data, where the variable-length cell includes a cell header and a cell body, The cell header includes a cell header identifier, and the cell header identifier indicates a type of the variable length cell;

And a data reading module, configured to read the data type field, learn the type of the application data, and read the application data field to learn the content of the application data.
The receiving station according to claim 12, wherein the preset string comprises a first string, and when the preset string is the first string, the type of the application data is global Universal positioning information application data, the types of variable length cells include position information lower sub-frame, position information sub-low sub-frame, position information sub-high sub-frame, position information high sub-frame, speed information, altitude information, and/or Terminal identification code.
A transmitting terminal, comprising: at least one processor, at least one wireless network interface, a memory, and at least one communication bus, the memory for storing program instructions, the processor, configured to:

Executing the program instructions to write a preset string in a data type field in the fixed width signaling frame, wherein the preset string is used to define a type of application data to be transmitted, and in the fixed width letter Writing one or more variable length cells in the application data field in the frame, wherein the variable length cell includes a cell header and a cell body, the variable length cell carrying content of the application data, The cell header includes a cell header identifier, where the cell header identifier indicates the type of the variable length cell, thereby obtaining an extended fixed-width signaling frame;

Executing the program instruction to send the extended fixed-width signaling frame to the receiving station by using the wireless network interface, so that the receiving station can learn the type of the application data by reading the data type field, and pass Reading the application data field to learn the content of the application data.
The transmitting terminal according to claim 14, wherein said preset string The first string is included. When the preset string is the first string, the type of the application data is global universal positioning information application data, and the type of the variable length cell includes a low position subframe of position information. Position information sub-lower sub-frame, position information sub-high sub-frame, position information high-order sub-frame, speed information, altitude information, and/or terminal identification code.
A receiving station, comprising: at least one processor, at least one wireless network interface, a memory, and at least one communication bus, the memory for storing program instructions, the processor, configured to:

And executing the program instruction to receive a fixed-width signaling frame sent by the sending terminal, where the data type field of the fixed-width signaling frame includes a preset string, where the preset string is used to define the transmitted application data. a type, the application data field of the fixed-width signaling frame includes one or more variable-length cells carrying content of the application data, the variable-length cell includes a cell header and a cell body, a cell header identifier is included in the cell header, and the cell header identifier indicates a type of the variable length cell;

Executing the program instruction to read the data type field, knowing the type of the application data, and reading the application data field to learn the content of the application data.
The receiving station according to claim 16, wherein the preset string comprises a first string, and when the preset string is the first string, the type of the application data is global Universal positioning information application data, the types of variable length cells include position information lower sub-frame, position information sub-low sub-frame, position information sub-high sub-frame, position information high sub-frame, speed information, altitude information, and/or Terminal identification code.