Wireless communication method of TDMA (Time Division Multiple Access) system and related device

Abstract

The embodiment of the invention provides a wireless communication method of a TDMA (Time Division Multiple Access) system and a related device, and the wireless communication method is applied to first communication equipment and comprises the following steps: determining a superframe corresponding to a primary service call; the superframe comprises a plurality of service bursts and flexible bursts, the service bursts are used for bearing first service data to be transmitted by the first communication equipment, and the flexible bursts are provided for the first communication equipment to transmit second service data or receive third service data; the first business data, the second business data and the third business data are data of the same business or data of different businesses. The super-frame comprises the flexible burst, and the flexible burst can be provided for the first communication device to send the service data as the idle period, can also be provided for the first communication device to receive the service data transmitted by other devices, and can also be provided for other communication devices to transmit the service data, so that the effect that one super-frame opens up the idle period to transmit other information is realized; service expansion is facilitated, and user requirements can be better supported.

Description

Technical Field

[0001] The present application relates to the field of wireless communication technology, and in particular to a TDMA wireless communication method and related devices. Background Art

[0002] In wireless communication systems, communication devices, such as digital intercom devices, usually transmit data in superframes. Taking voice transmission as an example, every six bursts form a superframe. In each voice superframe, the first burst carries the frame synchronization word and voice information, and the other bursts carry embedded signaling and voice information.

[0003] Therefore, during voice transmission, it is impossible to free up an idle time period in the current time slot to transmit other information, which is not conducive to business expansion and cannot better support user needs. Summary of the invention

[0004] The present application provides a wireless communication method and related devices of TDMA format, the purpose of which is to realize the use of idle time for superframes to transmit other information, improve flexibility, facilitate business expansion, and better support user needs.

[0005] In order to achieve the above objectives, this application provides the following technical solutions:

[0006] In the first aspect, the present application provides a wireless communication method of TDMA format, which is applied to a first communication device, and the method includes: determining a superframe corresponding to a service call; wherein the superframe includes: multiple service bursts and flexible bursts, the service bursts are used to carry the first service data to be transmitted by the first communication device, and the flexible bursts are used to provide the first communication device with the second service data or receive the third service data; the first service data and the second service data and the third service data are data of the same service, or data of different services.

[0007] In a possible implementation, the method further includes: transmitting a plurality of superframes carrying the first service data on a predetermined transmission time slot of a predetermined transmission frequency.

[0008] In one possible implementation, multiple superframes carrying first service data are transmitted at a predetermined transmission time slot of a predetermined transmission frequency, including: sequentially transmitting multiple superframes carrying first service data at a predetermined transmission time slot of a predetermined transmission frequency, and flexible bursts in the multiple superframes are empty; or, the flexible bursts in a first part of the superframes of the multiple superframes are empty, and the flexible bursts in a second part of the superframes carry second service data; or, the flexible bursts in the multiple superframes carry second service data.

[0009] In one possible implementation, the method further includes: when the first communication device transmits multiple superframes carrying the first service data, the first communication device switches to a receiving state at a flexible burst position where no data is transmitted to detect third service data sent to the first communication device.

[0010] In a possible implementation manner, the short burst in the flexible burst carries the second service data.

[0011] In a possible implementation, one or more service bursts among the multiple service bursts include: a flexible burst type, and the flexible burst type is used to indicate the occupation of the flexible burst by the first communication device.

[0012] In a possible implementation, one or more service bursts among the multiple service bursts include time slot information, and the time slot information includes a data type of the first service data and / or a flexible burst type.

[0013] In a possible implementation manner, the first service burst among the multiple service bursts includes time slot information.

[0014] In a possible implementation, one or more service bursts among the multiple service bursts include: frame synchronization, where the frame synchronization is used to indicate whether a superframe is an uplink signal or a downlink signal, and / or indicates a working mode of a transmitting device of the superframe.

[0015] In a possible implementation, the frame synchronization is located in the middle of the service burst.

[0016] A possible implementation also includes: determining a signaling burst corresponding to a service call, wherein the signaling burst includes: frame synchronization, time slot information and signaling content; frame synchronization is used to indicate whether the signaling burst is an uplink signal or a downlink signal; the time slot information includes a data type, and the data type is used to indicate the type of the signaling burst.

[0017] In the second aspect, the present application provides a wireless communication method of TDMA format, which is applied to a second communication device, and the method includes: receiving a superframe transmitted by a first communication device when sending first service data, the superframe including: a service burst and a flexible burst, the service burst carrying the first service data transmitted by the first communication device; determining the use of the flexible burst in the superframe by the first communication device according to the time slot information in the first service data; and transmitting fourth service data at the flexible burst position not used by the first communication device.

[0018] In a third aspect, the present application provides a communication device, which is a walkie-talkie, comprising: a processor, a memory and a communication interface, the processor being coupled to the memory and the communication interface; the memory being used to store computer instructions; the processor being used to execute a computer program or computer instructions stored in the memory, so that the communication device executes the method provided in the first aspect and its possible implementation methods.

[0019] In a fourth aspect, the present application provides a communication device, which is a walkie-talkie, comprising: a processor, a memory and a communication interface, the processor being coupled to the memory and the communication interface; the memory being used to store computer instructions; the processor being used to execute a computer program or computer instructions stored in the memory, so that the communication device executes the method provided in the second aspect and its possible implementation methods.

[0020] In a fifth aspect, the present application provides a computer program product, characterized in that its computer program, when the computer program is executed, implements the method provided in the first aspect, the second aspect and possible implementations thereof.

[0021] In the above technical solution, the superframe corresponding to a service call includes flexible bursts. The flexible bursts can be provided to the first communication device as an idle period to send service data, or to the first communication device to receive service data transmitted by other devices, or to other communication devices to transmit service data. This enables a superframe to open up idle time to transmit other information, which is beneficial to service expansion and can better support user needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is an example diagram of a scenario of a first communication device and a second communication device;

[0023] Figure 2 A flowchart of a TDMA wireless communication method disclosed in an embodiment of the present application;

[0024] Figure 3 The structure of the first service burst, other service bursts and short bursts disclosed in the embodiment of the present application;

[0025] Figure 4 A flowchart of another TDMA wireless communication method disclosed in an embodiment of the present application;

[0026] FIG. 5A to FIG. 5D The structure of the service call provided in the embodiment of the present application;

[0027] Figure 6 A schematic diagram of the structure of a communication device disclosed in an embodiment of the present application. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. The terms used in the following embodiments are only for the purpose of describing specific embodiments and are not intended to be used as limitations on the present application. As used in the specification and the appended claims of the present application, the singular expressions "one", "a kind", "said", "above", "the" and "this" are intended to also include expressions such as "one or more", unless there is a clear contrary indication in the context. It should also be understood that in the embodiments of the present application, "one or more" refers to one, two or more; "and / or" describes the association relationship of the associated objects, indicating that three relationships may exist; for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. The character " / " generally indicates that the objects associated before and after are in an "or" relationship.

[0029] References to "one embodiment" or "some embodiments" etc. described in this specification mean that a particular feature, structure or characteristic described in conjunction with the embodiment is included in one or more embodiments of the present application. Thus, the phrases "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear at different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0030] The multiple involved in the embodiments of the present application means greater than or equal to two. It should be noted that in the description of the embodiments of the present application, the words "first", "second", etc. are only used for the purpose of distinguishing the description, and cannot be understood as indicating or implying relative importance, nor can they be understood as indicating or implying an order.

[0031] The technical solution of the present application can be applied to a wireless communication system of the time division multiple access (TDMA) format, which wireless communication system can be a radio system, such as a DMR system, a PDT system, etc., a second generation (2G) communication system, a third generation (3G) communication system, an LTE system, a fifth generation (5G) communication system, an LTE and 5G hybrid architecture, a 5G new wireless (5G New Radio, 5G NR) system, and new communication systems that will emerge in the future development of communications.

[0032] The wireless communication system includes a first communication device and a second communication device.

[0033] In some embodiments, the first communication device may be a transmitter, responsible for modulating information onto radio waves and transmitting them, and the second communication device may be a receiver, responsible for receiving these radio waves and converting them back into original information. Both the first communication device and the second communication device may be walkie-talkies or digital walkie-talkies.

[0034] In other embodiments, the first communication device may be a device on the network side for providing network communication functions, which is also referred to as a network device or a network element in some cases. The network device may generally be a base station (including a functional unit of a base station, or a combination of functional units of a base station) or a core network unit. The second communication device may be a device for accessing a network, which may generally be a terminal.

[0035] An example of a wireless communication system is Figure 1 As shown, Figure 1 The invention comprises a first communication device 100 and a second communication device 200. The first communication device 100 and the second communication device 200 are digital intercom devices.

[0036] In wireless communication systems, the available physical resource is the radio spectrum. The radio spectrum is divided into several radio frequency carriers, each of which usually uses TDMA. TDMA means dividing time into periodic frames, and each frame is divided into several time slots. A pair of communication devices communicate in the corresponding time slots, and devices in different time slots do not interfere with each other.

[0037] A digital intercom burst is a section of RF carrier modulated by a data stream. A burst represents the physical content of a time slot. The burst is the basic unit of wireless transmission. The reasonable design of the burst structure can better realize the transmission of voice and data.

[0038] Taking voice transmission as an example, voice transmission between digital intercom devices is usually transmitted in the form of voice superframes. Among them, every six bursts form a superframe, and the transmission of each voice superframe is that the first burst carries the frame synchronization word and voice information, and the other bursts carry embedded signaling and voice information. Therefore, during the voice transmission process, it is impossible to vacate the idle time period in the current time slot to transmit other information, which is not conducive to business expansion and cannot better support user needs.

[0039] Moreover, during data transmission, each burst carries frame synchronization words and data information, and it is impossible to free up an idle time period in the current time slot to transmit other information. Moreover, each data burst carries frame synchronization, which wastes air interface resources.

[0040] Based on this, the embodiment of the present application provides a wireless communication method of TDMA format, such as Figure 2 As shown, including:

[0041] S201. A first communication device determines a superframe corresponding to a service call.

[0042] Among them: one service call may correspond to one or more superframes, and usually corresponds to multiple superframes.

[0043] A superframe includes: multiple service bursts and flexible bursts. Among them, service bursts and flexible bursts can both be called bursts. Service bursts are used to carry first service data to be transmitted by a first communication device. Flexible bursts are used to provide the first communication device with second service data, and the first service data and the second service data can be data of the same service, or data of different services; the flexible burst can also be empty. When the flexible burst is empty, the first communication device does not transmit service data based on the flexible burst, and other communication devices can use the flexible burst to transmit third service data. The third service data can be data of the same service as the second service data, or data of different services.

[0044] Exemplarily, the first service data may be voice service data, data service data, etc., the second service data and the third service data may also be voice service data, data service data, etc., and may also be data of services such as forced demolition, heartbeat broadcast, and service status broadcast.

[0045] It can be understood that the first communication device refers to a device with a transceiver function, such as a digital intercom device.

[0046] Taking the DMR / PDT communication system as an example, the air interface rate is 9600 bit / s, each frame is 60 ms, including two time slots, each time slot is 30 ms, and each time slot can send a burst in each frame. A complete burst is 264 bits.

[0047] Exemplarily, every 60 ms of speech is 216 bits after speech coding and channel coding, and 420 ms of speech is 216 bits*7=1512 bits in total after speech coding and channel coding.

[0048] The first service burst of each superframe can carry 196 bits of data content, and other bursts of the superframe can carry 264 bits. Therefore, the first 6 bursts in a superframe can carry 196 bits + 264 bits * 5 = 1516 bits, which is greater than 1512 bits.

[0049] Therefore, every 420ms of speech can be sent in the first 6 bursts of the superframe, and one burst can be left as a flexible burst. In order to take into account the voice service, a superframe can include 6 service bursts and 1 flexible burst, a total of 7 bursts.

[0050] Of course, a superframe may also include multiple service bursts and multiple flexible bursts, for example, a superframe may include 6 service bursts and 2 flexible bursts. If the service data to be transmitted is large, a superframe may also be defined as 7 service bursts and 1 flexible burst.

[0051] S202. The first communication device transmits a superframe at a predetermined transmission time slot of a predetermined transmission frequency, and correspondingly, the second communication device receives the superframe.

[0052] In an application scenario, a first communication device exchanges first service data with a second communication device. The second communication device may also refer to a device with transceiver functions, such as a digital intercom device. Other devices may refer to the second communication device.

[0053] The first communication device transmits a superframe to the second communication device at a predetermined transmission time slot of a predetermined transmission frequency.

[0054] In some embodiments, the flexible burst is provided to the first communication device to transmit the second service data, and the flexible burst in the superframe sent by the first communication device carries the second service data.

[0055] In other embodiments, the flexible burst is empty, and the flexible burst is provided to the second communication device to transmit the third service data, based on which the second communication device executes the following steps S203 and S204. It can be understood that after the second communication device receives a superframe, it determines the usage of the flexible burst based on the superframe, and if it determines that the flexible burst is idle, it can execute the following steps S203 and S204.

[0056] In the case where the first communication device determines that one service call corresponds to multiple superframes, the following operations may be performed:

[0057] The flexible bursts of multiple superframes can all be provided to the first communication device to send the second service data. In this way, the flexible bursts in multiple superframes sent by the first communication device can carry the second service data. Of course, the second service data carried by each superframe is usually different. In some scenarios, the second service data carried by the flexible bursts in some superframes in the multiple superframes can also be the same, so as to achieve enhanced transmission of service data and avoid loss of service data.

[0058] The flexible bursts in multiple superframes can all be provided to the second communication device to send the third service data, and correspondingly, the first communication device receives the third service data. In this way, the flexible bursts in multiple superframes sent by the first communication device are empty. In addition, the third service data carried by each superframe is usually different. In some scenarios, the third service data carried by the flexible bursts in some superframes in multiple superframes can also be the same.

[0059] Multiple flexible bursts in multiple superframes can be divided into two parts. The first part of flexible bursts is used to provide the second communication device with the third service data, that is, the flexible bursts in the first part of the superframe transmitted by the first communication device are empty, and the second part of flexible bursts is used to provide the first communication device with the second service data, that is, the flexible bursts in the second part of the superframe sent by the first communication device carry the second service data. Among them: the second service data carried by each superframe is usually different, and the third service data carried by each superframe is usually different. In some scenarios, the third service data carried by the flexible bursts in some superframes in the first part of the superframe may also be the same, and the second service data carried by the flexible bursts in some superframes in the second part of the superframe may also be the same.

[0060] In some embodiments, the number of superframes in the first part and the number of superframes in the second part may be the same or different. The superframes in the first part and the superframes in the second part may be continuous or discontinuous.

[0061] In some embodiments, a flexible burst may consist of a full burst (FSB) or one or more short bursts (SSB). The duration of a short burst is less than the duration of a full burst, and the duration of a full burst is less than or equal to the duration of a time slot in the TDMA system.

[0062] Therefore, in a superframe transmitted by the first communication device, a complete flexible burst may carry the second service data, or a portion of a short burst in the flexible burst may carry the second service data, and the partial short burst may include one or more short bursts. The duration of a short burst is less than the duration of a complete flexible burst.

[0063] Similarly, the second communication device carries the third service data based on the flexible burst, which may be a short burst in the flexible burst, that is, a part of a complete flexible burst duration, or a complete burst carrying the third service data.

[0064] S203: The second communication device determines a flexible burst position in a superframe that can be used by the second communication terminal.

[0065] In one embodiment, the flexible bursts in the superframe periodically carry data or are always empty. The second terminal determines the rule of flexible burst occupancy by monitoring superframe data for a period of time and determines the available flexible burst positions, that is, the confirmed empty flexible burst positions.

[0066] In another embodiment, a service burst in a superframe may include a flexible burst type, which is used to indicate the occupation of the flexible burst by the first communication device. The occupation status includes: the flexible burst is empty, that is, the first communication device does not occupy the flexible burst, the flexible burst is fully occupied by the first communication device, one or more short bursts in the flexible burst are occupied by the first communication device, etc.

[0067] The second communication device receives the superframe, parses the flexible burst type included in the service burst in the superframe, and then determines whether the superframe includes an empty flexible burst, and determines the location of the empty flexible burst, wherein the empty flexible burst may refer to a flexible burst that is not occupied by a communication device (including the first communication device and other communication devices).

[0068] The structure of multiple service bursts included in a superframe is described below.

[0069] It should be noted that, for multiple service bursts included in a superframe, the contents they carry may be the same or different.

[0070] In some embodiments, among the multiple service bursts included in a superframe, the first service burst (First Data Burst, FDB) can carry frame synchronization (Frame Synchronization, FS, which occupies 48 bits), time slot information (Slot Information, SI, which occupies 20 bits), and data content (which occupies 196 bits), and other service bursts (Data Burst, DB) carry data content (264 bits) and do not carry frame synchronization and time slot information. This can avoid the problem of wasting air interface resources caused by each burst carrying frame synchronization.

[0071] Taking a superframe including 6 service bursts and 1 flexible burst as an example, the first service burst carries frame synchronization, time slot information, and data content, and the other 5 service bursts only carry data content.

[0072] In other embodiments, the multiple service bursts included in the superframe may all carry frame synchronization, time slot information and data content.

[0073] In the above two embodiments, frame synchronization is used to indicate whether the signal transmitting the superframe is an uplink signal or a downlink signal. Frame synchronization can also be used to indicate the working mode of the transmitting device (ie, the first communication device) of the superframe.

[0074] In some embodiments, the transmission mode of the first communication device includes: same-frequency direct communication, different-frequency direct communication, transfer mode, etc. The transfer mode includes transfer mode uplink and transfer mode downlink.

[0075] The time slot information includes multiple data, which are used to indicate the data type of the first service, and the first service data is the data of the first service. The data content may refer to the service data content, and the data content carried by different service bursts may be different. The service data content may be voice information or other data information, etc., which is not limited by the present application.

[0076] The following combination Figure 3 The structures of FDB, DB and SSB are introduced. For example, Figure 3 One complete burst shown consists of 264 bits.

[0077] In some embodiments, the SI may be split into multiple parts, such as Figure 3 As shown in FIG. 1 , the 20-bit SI is split into two 10-bit SIs. In FDB, FS occupies 48 bits and is located in the middle. The two 10-bit SIs are located on both sides of FS. The data content can be distributed at the beginning and end of FDB, each occupying 98 bits.

[0078] Figure 3 Two types of FDB are shown, namely: uplink (UL) FDB, whose frame synchronization uses FS1, and downlink (DL) FDB, whose frame synchronization uses FS2. The first communication device can transmit these two types of FDB. After the second communication device receives the FDB, it can align the air interface timing through frame synchronization and know whether it is an uplink burst or a downlink burst.

[0079] The DB only carries data content, which can occupy up to 264 bits. Of course, according to the data volume requirement of the service data carried by a superframe, the data content in a DB can occupy the full 264 bits or not.

[0080] It is determined by the foregoing content that a flexible burst only carries service data, and a flexible burst may include one or more SSBs. Based on this, an SSB may include fewer bits than a service burst.

[0081] Based on the structure of the service burst, the service burst in the superframe can carry the flexible burst type in the following way:

[0082] One or more service bursts among the multiple service bursts included in the superframe include: a flexible burst type.

[0083] In order to allow the service burst to have more bits to carry service data, the first service burst among multiple service bursts of a superframe includes a flexible burst type, and other service bursts may not include a flexible burst type.

[0084] In some embodiments, the first service burst includes time slot information, and the time slot information may include a flexible burst type. Of course, in a scenario where multiple service bursts all include time slot information, the time slot information of the multiple service bursts may all include a flexible burst type.

[0085] It should be noted that the following Table 1 shows a structure of time slot information.

[0086] Table 1 Time slot information

[0087] Information Unit Length (bits) illustrate Data Type 5 Data Types Corlor Code (CC) 2 Color Code Parity Check 1 Parity FEC 12 Channel Coding

[0088] As determined by Table 1, the time slot information includes information such as data type and color code. The data type indicates the data type of the superframe, and the color code is used to indicate different communications. Based on this, the flexible burst type of the superframe can also be used as a type of information in the data type. That is, the data type in the time slot information is used to indicate the data type of the superframe and also to indicate the flexible burst type.

[0089] The following Table 2 shows several data types. The data type occupies 5 bits, and the 5-bit values ​​marked in dark colors in Table 2 can describe the flexible burst type in a superframe.

[0090] Table 2 Data types

[0091]

[0092]

[0093] S204. The second communication device transmits third service data at an idle position of the flexible burst.

[0094] When the second communication device determines that the flexible burst in a superframe is empty, it transmits the third service data at the idle position of the flexible burst. That is, the second communication device transmits the third service at the flexible burst position in the superframe where the first communication device transmits service data, the first communication device does not send data at the flexible burst position, and the transmission position of the second communication device is the corresponding position on the predetermined frequency and predetermined time slot where the empty flexible burst of the first device is located.

[0095] In the aforementioned application scenario, the first communication device and the second communication device interact.

[0096] In some embodiments, the second communication device transmits the third service data, and the first communication device can receive the third service data. That is, when the first communication device transmits multiple superframes carrying the first service data, at a flexible burst position where no data is transmitted, the first communication device stops transmitting and switches to a receiving state to receive the third service data transmitted by the second communication device at that position.

[0097] In other embodiments, the third service data transmitted by the second communication device may not be directed to the first communication device, that is, the first communication device does not receive the third service data, and other communication devices, such as the fifth communication device, receive the third service data.

[0098] In another application scenario, the first communication device sends the first service data, and the second communication device exchanges service data with the third communication device. The third communication device may be a fourth communication device that is not a receiving device of the first service or a fifth communication device that is a receiving device of the first service, or other communication devices.

[0099] In some embodiments, the flexible burst in the superframe transmitted by the first communication device may also be provided for interactive use by the third communication device and the fourth communication device.

[0100] In some embodiments, the flexible burst in the superframe transmitted by the first communication device can also be provided to the second communication device to send fourth service data. The fourth service data can be received by the third communication device, and the fourth service data is different from the first, second, and third service data.

[0101] It can be understood that: the fourth service data sent by the second communication device using the flexible burst in the superframe transmitted by the first communication device is also received by the first communication device, and the fourth service data refers to the third service data.

[0102] It can be understood that the superframe transmitted by the first communication device is a shared superframe, and the second communication device and other communication devices (such as the third communication device and the fourth communication device, etc.) can receive the superframe. Taking the third communication device as an example, the third communication device receives the superframe and determines that the flexible burst in the superframe is empty, that is, the first communication device does not occupy the flexible burst to carry service data. The third communication device can transmit service data to the fourth communication device at the position of the flexible burst.

[0103] In an embodiment of the present application, a superframe corresponding to a service call includes a flexible burst. The flexible burst can be provided to the first communication device as an idle period to send service data, or to the first communication device to receive service data transmitted by other devices, or to other communication devices to transmit service data, thereby realizing a superframe to open up idle time to transmit other information, that is, it is possible to receive data during the transmission process on a channel, and to realize channel service concurrency, which is flexible and changeable, is conducive to service expansion, and can better support user needs.

[0104] Another embodiment of the present application also provides a wireless communication method of TDMA format, such as Figure 4 As shown, including:

[0105] S301. A first communication device determines a signaling burst and multiple superframes. A superframe includes multiple service bursts and flexible bursts. The service burst is used to carry first service data, and the flexible burst is used to carry second service data, or is empty.

[0106] It can be understood that in a TDMA radio system, a service call may include a signaling burst (Full Signaling Burst, FSB) and a superframe, and the first communication device may first send a signaling burst and then send one or more superframes.

[0107] Based on this, the first communication device can determine the signaling burst and multiple superframes corresponding to a service call. Among them: the signaling burst includes: frame synchronization, time slot information and signaling content; frame synchronization is used to indicate that the signaling burst is an uplink signal or a downlink signal; the time slot information includes a data type, and the data type is used to indicate the type of the signaling burst. For example, for voice services, the type of the signaling burst sent by the first communication device is the voice header shown in Table 2, and for data services, the type of the signaling burst sent by the first communication device is the data header shown in Table 2. Among them, the structure of the signaling burst can be the same as the structure of the first service burst in the superframe, which can be seen in Figure 3 The corresponding text content will not be repeated here.

[0108] The structure of the superframe and the manner in which the first communication device transmits the superframe can be found in the aforementioned embodiments and will not be described in detail here.

[0109] S302. The first communication device transmits a signaling burst and multiple superframes at a predetermined transmission time slot of a predetermined transmission frequency. Correspondingly, the second communication device receives the signaling burst and the multiple superframes.

[0110] The first communication device first transmits a signaling burst and then transmits a plurality of superframes. Correspondingly, the second communication device first receives a signaling burst and then receives a plurality of superframes.

[0111] In one example, the first communication device transmits data of a voice service.

[0112] In the signaling burst corresponding to the voice service, the data type in the timeslot information is the voice header.

[0113] Taking the time slot information of the first service burst including the flexible burst type as an example, if the data type in the time slot information of the first service burst of the superframe is: there is a short burst voice superframe, it means that the first communication device has sent a short burst carrying voice signaling in the flexible burst of the current voice superframe.

[0114] If the data type in the time slot information of the first service burst of the superframe is: empty flexible burst voice superframe, it means that the first communication device does not transmit information in the flexible burst of the current voice superframe.

[0115] If the data type in the time slot information of the first service burst of the superframe is: complete flexible burst voice superframe, it means that the first communication device transmits a complete signaling burst in the flexible burst of the current voice superframe. The signaling burst can carry control information of the semantic service or other signaling information.

[0116] Other traffic bursts in the superframe include voice information.

[0117] In another example, the first communication device transmits data of a data service.

[0118] In the signaling burst corresponding to the data service, the data type in the time slot information is the data header.

[0119] Taking the time slot information of the first service burst including the flexible burst type as an example, if the data type in the time slot information of the first service burst of the superframe is 1 / 2 normal data superframe, it means that the current data superframe is 1 / 2 data, and the first communication device sends service data in the flexible burst of the current data superframe.

[0120] If the data type in the time slot information of the first service burst of the superframe is 1 / 2 short burst data superframe, it means that the current data superframe is 1 / 2 data, and the first communication device sends a short burst in the flexible burst of the current data superframe, and the short burst carries instruction information.

[0121] If the data type in the time slot information of the first service burst of the superframe is 1 / 2 empty flexible burst data superframe, it means that the current data superframe is 1 / 2 data, and the first communication device does not transmit information in the flexible burst of the current data superframe.

[0122] The traffic bursts in a superframe are data information.

[0123] S303: The second communication device determines an empty flexible burst in a superframe.

[0124] The implementation of step S303 may refer to the content of step S203 in the above embodiment, which will not be described again here.

[0125] S304. The second communication device transmits third service data at the location of the empty flexible burst.

[0126] The implementation of step S304 may refer to the content of step S204 in the aforementioned embodiment, and will not be repeated here.

[0127] FIG. 5A to FIG. 5D Several examples of business calls provided by the embodiments of the present application are shown.

[0128] Figure 5AIn one example shown, a service call may include a signaling burst (FSB) and one or more superframes. The first communication device may first send the signaling burst and then send the superframe. For the convenience of drawing, Figure 5A Only one superframe is shown. Each superframe consists of 6 service bursts and 1 flexible burst. The first service burst (FDB) of each superframe carries frame synchronization (FS), slot information (SI), and data content. Other service bursts (DB) carry data content but do not carry frame synchronization and slot information. The slot information of the first service burst of the current superframe indicates the flexible burst occupancy of the current superframe by the first communication device.

[0129] The first communication device sends a short burst (SSB) at a flexible burst position of a superframe and does not transmit during a partial time period of the flexible burst (Part of Flexible Burst Not Transmit, PN).

[0130] Figure 5B In an example shown, a service call includes a signaling burst and a superframe structure similar to Figure 5A The first communication device does not transmit in the entire flexible burst position of the superframe (Full of Flexible Burst Not Transmit, FN).

[0131] Figure 5C In an example shown, a service call includes a signaling burst and a superframe structure similar to Figure 5A The first communication device sends a signaling burst (FSB) at the entire flexible burst position of the superframe.

[0132] Figure 5D In an example shown, a service call includes a signaling burst and a superframe structure similar to Figure 5A The first communication device sends a traffic burst (DB) at the entire flexible burst position of the superframe.

[0133] Therefore, it can be seen that the first communication device may not transmit (FN) or send a short burst (SSB) or send a signaling burst (FSB) or send a service burst (DB) at the flexible burst position of each superframe, and the time slot information of the first service burst of the current superframe indicates the flexible burst occupancy of the current superframe by the first communication device. Other communication devices can obtain the flexible burst occupancy of the current superframe according to the time slot information of the first service burst of each superframe of the first communication device, and in some embodiments, the first service burst of the superframe does not have the flexible burst occupancy, and other communication devices can also determine the rules of flexible burst occupancy by monitoring for a period of time, and can send SSB at the position where the flexible burst has PN or can send SSB or FSB at the position where the flexible burst has FN.

[0134] For example, walkie-talkie 1, walkie-talkie 2, walkie-talkie 3, and walkie-talkie 4 use the same frequency and the same time slot to communicate. Walkie-talkie 1 sends a service call and positioning information to walkie-talkie 2. At the same time, walkie-talkie 2 needs to notify walkie-talkie 1 to stop transmitting under certain circumstances, and walkie-talkie 3 needs to send positioning information to walkie-talkie 4.

[0135] When intercom 1 sends a service call to intercom 2, it first sends a signaling burst (FSB), then the flexible burst of the first superframe carries a short burst SSB, indicating the information of the current voice service, the flexible burst of the second superframe carries the positioning information FSB of intercom 1, and the flexible burst of the third superframe is empty FN, and the superframes are sent in a cycle. When intercom 2 needs to notify intercom 1 to stop transmitting midway, it can send a short burst SSB carrying the stop transmission signaling at the PN position or FN position of the flexible burst. When intercom 3 needs to send positioning information to intercom 4, it can also send positioning information FSB to intercom 4 at the PN position or FN position of the flexible burst.

[0136] Figure 6 A hardware structure block diagram of a communication device provided in an embodiment of the present application is shown, and the communication device may be a digital intercom device (or called an intercom).

[0137] Reference Figure 6 The communication device may include: at least one processor 110 , at least one memory 120 , at least one communication interface 130 , and one or more antennas 140 .

[0138] In the embodiment of the present application, the processor 110, the communication interface 130, and the memory 120 communicate with each other through a communication bus; the communication interface 130 is used to receive signals from the processor 110, convert the signals into radio frequency signals, and send radio frequency signals through one or more antennas 140, and can also receive signals from other devices through one or more antennas 140. The communication interface 130 can be a transceiver, or an input / output interface.

[0139] The processor 110 may be a central processing unit (CPU), or an application specific integrated circuit (ASIC), or may be configured as one or more integrated circuits, etc.

[0140] The memory 120 may include a random access memory (RAM), and may also include a non-volatile memory (NVM, etc.), such as at least one disk memory.

[0141] The memory stores a program, and the processor can call the program stored in the memory, and the program is used to execute the various functions and operation steps of the first communication device or the second communication device described above to implement any of the above-mentioned TDMA wireless communication methods. Optionally, the detailed functions and extended functions of the program can refer to the above description.

[0142] An embodiment of the present application also provides a computer-readable storage medium, which stores instructions. When the computer-readable storage medium is executed on one or more computing devices, the one or more computing devices execute the information indication method described in the above embodiment.

[0143] The computer-readable storage medium may be a non-temporary computer-readable storage medium, for example, the non-temporary computer-readable storage medium may be a read-only memory (ROM), a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.

[0144] The embodiment of the present application also provides a computer program product, when the computer program product is executed by one or more computing devices, the one or more computing devices execute any of the methods for indicating the aforementioned information. The computer program product may be a software installation package, and when any of the methods for indicating the aforementioned information is required, the computer program product may be downloaded and executed on a computer.

[0145] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features therein can be replaced by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A wireless communication method of TDMA format, characterized in that: Applied to a first communication device, the method includes: Determine a superframe corresponding to a service call; wherein the superframe includes: multiple service bursts and flexible bursts, the service bursts are used to carry the first service data to be transmitted by the first communication device, and the flexible bursts are used to provide the first communication device with the function of transmitting the second service data or receiving the third service data; the first service data and the second service data, the third service data are data of the same service, or data of different services.

2. The method according to claim 1, characterized in that Also includes: A plurality of superframes carrying the first service data are transmitted on a predetermined transmission time slot of a predetermined transmission frequency.

3. The method according to claim 2, characterized in that The transmitting of a plurality of superframes carrying the first service data on a predetermined transmission time slot of a predetermined transmission frequency comprises: Multiple superframes carrying the first service data are transmitted sequentially on the predetermined transmission time slots of the predetermined transmission frequency, and the flexible bursts in the multiple superframes are empty; or, the flexible bursts in the first part of the multiple superframes are empty, and the flexible bursts in the second part of the superframes carry the second service data; or, the flexible bursts in the multiple superframes carry the second service data.

4. The method according to claim 2, characterized in that: The method further comprises: When transmitting multiple superframes carrying the first service data, the first communication device switches to a receiving state at a flexible burst position where no data is transmitted to detect the third service data sent to the first communication device.

5. The method according to claim 3, characterized in that: The short burst in the flexible burst carries the second service data.

6. The method according to any one of claims 1 to 5, characterized in that: One or more service bursts among the multiple service bursts include a flexible burst type, and the flexible burst type is used to indicate an occupation status of the flexible burst by the first communication device.

7. The method according to any one of claims 1 to 5, characterized in that: One or more service bursts among the multiple service bursts include time slot information, and the time slot information includes the data type of the first service data and / or the flexible burst type.

8. The method according to claim 7, characterized in that A first traffic burst of the plurality of traffic bursts includes the time slot information.

9. The method according to any one of claims 1 to 8, characterized in that One or more service bursts among the multiple service bursts include frame synchronization, and the frame synchronization is used to indicate that the superframe is an uplink signal or a downlink signal, and / or indicate the working mode of the transmitting device of the superframe.

10. The method according to claim 9, characterized in that The frame synchronization is located in the middle of the service burst.

11. The method according to any one of claims 1 to 10, characterized in that: Also includes: Determine the signaling burst corresponding to the service call; wherein: the signaling burst includes: frame synchronization, time slot information and signaling content; the frame synchronization is used to indicate that the signaling burst is an uplink signal or a downlink signal; the time slot information includes a data type, and the data type is used to indicate the type of the signaling burst.

12. A wireless communication method of TDMA format, characterized in that: Applied to a second communication device, the method includes: receiving a superframe transmitted by a first communication device when sending first service data, the superframe comprising: a service burst and a flexible burst, the service burst carrying the first service data transmitted by the first communication device; Determining, according to the time slot information in the first service data, usage of the flexible burst in the superframe by the first communication device; The fourth service data is transmitted in the flexible burst position not used by the first communication device.

13. A communication device, characterized in that: The communication device shown is a walkie-talkie, comprising: a processor, a memory and a communication interface, wherein the processor is coupled to the memory and the communication interface; The memory is used to store computer instructions; The processor is configured to execute the computer program or computer instructions stored in the memory, so that the communication device executes the method according to any one of claims 1 to 11.

14. A communication device, characterized in that: The communication device is a walkie-talkie, comprising: a processor, a memory and a communication interface, wherein the processor is coupled to the memory and the communication interface; The memory is used to store computer instructions; The processor is configured to execute the computer program or computer instructions stored in the memory, so that the communication device performs the method according to claim 12.

15. A computer program product, characterized in that A computer program thereof, when the computer program is run, enables the method according to any one of claims 1 to 14 to be executed.

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