CN110890941A - Method for realizing reverse message through CSBK signaling - Google Patents
Method for realizing reverse message through CSBK signaling Download PDFInfo
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- CN110890941A CN110890941A CN201911247804.0A CN201911247804A CN110890941A CN 110890941 A CN110890941 A CN 110890941A CN 201911247804 A CN201911247804 A CN 201911247804A CN 110890941 A CN110890941 A CN 110890941A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
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Abstract
A method for implementing a reverse message through CSBK signaling, comprising, S1, transmitting a standard 30ms control signaling block edited by channel coding; s2, the receiving terminal of the receiving party automatically searches for a transmittable 30ms idle time slot; s3, before the control signaling block is transmitted by the receiving terminal, the receiving terminal switches the receiving mode of the receiving terminal into the transmitting mode within a first preset time; s4, the receiving terminal transmits a complete 30ms control signaling block in the 30ms idle time slot of the receiving side; s5, after the control signaling block is transmitted for 30ms, the receiving terminal switches the transmitting mode of the receiving terminal into the receiving mode within a second preset time length; or, the receiving terminal is directly switched to a transmitting mode; s6, the transmitting party receives the 30ms control signaling block in the 30ms idle time slot of the corresponding transmitting party and extracts the effective data in the 30ms control signaling block. The invention has the advantages of good compatibility, larger effective information amount and better channel coding protectiveness.
Description
Technical Field
The invention relates to the technology in the communication field, in particular to a method for realizing reverse messages through CSBK signaling.
Background
In the transmitting and receiving process of the interphone using the DMR/PDT protocol, it is common that the transmitting side transmits 30ms voice (called a transmission slot), 30ms idle slots, 30ms voice again, and 30ms idle slots again, in this way, voice is alternately transmitted; the receiving party also receives 30ms voice (called receiving time slot), 30ms idle time slot, 30ms voice again and 30ms idle time slot again, in this way, voice is received alternately; during the 30ms idle slot, the receiving side is granted permission to send messages to the transmitting side upon reception by the base station and the mobile station via the reverse channel.
In the prior art, allowing the receiving party to send messages to the transmitting party when the receiving party and the mobile station receive through a reverse channel is realized through a DMR/PDT protocol. The DMR/PDT protocol defines several back channel commands: embedded reverse channel instructions, dedicated reverse channel instructions, independent reverse channel instructions. The embedded and dedicated reverse channel commands are used for the downlink channel, and the independent reverse signaling is used for the uplink channel and the pass-through mode.
Separate reverse signaling must be used for the terminal to send the reverse message. In order to enable the terminal to switch from the receive state to the transmit state and then back to the receive state after transmission is complete, the independent reverse signaling burst is shorter than the normal speech or signaling burst, e.g., a 30ms burst that includes 48 bits of synchronization data, 32 bits of reverse signaling data, and 16 bits of embedded signaling data. Wherein the 32-bit reverse signaling data is composed of 11-bit effective data and 21-bit channel coding protection data, and the information amount of the 11-bit effective data is too small.
In the prior art, a method for transmitting a message to a transmitter by a base station and a mobile station during receiving through an independent reverse channel has two problems, one is a compatibility problem. In the DMR/PDT protocol, it is specified that the handling of the independent reverse signaling is optional, and if the base station does not support parsing the independent reverse signaling, the signaling is ignored. Therefore, the compatibility problem that the mobile terminal (interphone) works under different base stations can be caused, and the mobile terminal which uses the independent reverse signaling service can normally work under some base stations and can not be realized under other base stations.
Secondly, the existing independent reverse signaling is 32 bits, the effective data only has 11 bits, the adopted channel coding is Hamming (16, 11, 4) and parity check, the information quantity is small, and the channel coding protection is not good.
Disclosure of Invention
To overcome the above problems, the present invention provides society. The method for realizing the reverse message through the CSBK signaling is good in compatibility, large in effective information amount and good in channel coding protectiveness.
The technical scheme of the invention is as follows: a method for realizing reverse message by CSBK signaling is provided, wherein in the transmitting and receiving process of interphone using DMR/PDT protocol, under the premise of not influencing the normal operation of transmitting terminal, the method comprises the following steps,
s1, the receiver with priority level presses the corresponding key on the receiving terminal, and transmits a standard 30ms control signaling block edited by channel coding, the control signaling block contains valid data with preset bits, and the valid data is arranged in the middle of the 30ms control signaling block;
s2, the receiving terminal automatically searches for a transmittable 30ms idle time slot;
s3, after finding the transmittable 30ms idle time slot, before the receiving terminal transmits the control signaling block, the receiving terminal switches the receiving mode of the receiving terminal into the transmitting mode within the first predetermined time length adjacent to the 30ms receiving time slot before the transmittable 30ms idle time slot;
s4, the receiving terminal transmits a complete 30ms control signaling block in the 30ms idle time slot of the receiving side;
s5, after the 30ms control signaling block is transmitted, the receiving terminal occupies a second preset time length in a 30ms receiving time slot which is immediately after the transmittable 30ms idle time slot, and the transmitting mode of the receiving terminal is switched to the receiving mode; or, the receiving terminal is directly switched to a transmitting mode;
s6, the transmitting party receives the 30ms control signaling block in the 30ms idle time slot of the corresponding transmitting party and extracts the effective data in the 30ms control signaling block.
As an improvement of the present invention, in the step S4, the receiving terminal directly sends the 30ms control signaling block to the transmitting side when transmitting the complete 30ms control signaling block in the 30ms idle timeslot of the receiving side; or sending the 30ms control signaling block to the base station, and forwarding to the transmitting party after the analysis by the base station.
As an improvement of the present invention, the predetermined bits of valid data are 16 bits.
As an improvement of the invention, the channel coding uses a Gray (20, 8) algorithm to generate 24-bit channel coding protection data.
As a refinement of the invention, said first predetermined period is selected between 5ms and 6 ms.
As a modification of the present invention, the first predetermined period of time is 5.42 ms.
As a refinement of the invention, said second predetermined period is selected between 5ms and 6 ms.
As a modification of the present invention, the second predetermined period of time is 5.42 ms.
Compared with the existing independent reverse signaling of the transfer mode, the invention adopts CSBK signaling (Chinese name is control signaling block), the CSBK signaling is standard signaling specified by DMR/PDT, and all base stations and terminals must support the analysis of the CSBK signaling. Therefore, the CSBK signaling is adopted to send the reverse information, and the problem of compatibility of different base stations to independent reverse signaling can be solved. The effective data of the reverse message transmitted by the invention is 16 bits, the channel coding algorithm is Gray (20, 8), and the problems of small information amount of independent reverse signaling and poor channel coding protection are solved.
Compared with the independent reverse signaling in the direct mode, the invention has the advantages that the effective data of the transmitted reverse message is 16 bits, the channel coding algorithm is gray (20, 8), and the problems of small information amount of the independent reverse signaling and poor channel coding protection are solved.
Drawings
FIG. 1 is a schematic block diagram of the process of the present invention.
Fig. 2 is a schematic diagram of a structure for transmitting CSBK signaling in the pass-through mode.
Fig. 3 is a schematic diagram of a structure for transmitting CSBK signaling in the relay mode.
Fig. 4 is a schematic diagram of the structure of an independent CSBK signaling in the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, fig. 1 discloses a method for implementing reverse message through CSBK signaling, which includes the following steps without affecting the normal operation of a transmitting terminal in the transmitting and receiving processes of an interphone using DMR/PDT protocol,
s1, the receiver with priority level presses the corresponding key on the receiving terminal, and transmits a standard 30ms control signaling block edited by channel coding, the control signaling block contains valid data with preset bits, and the valid data is arranged in the middle of the 30ms control signaling block;
s2, the receiving terminal of the receiving party automatically searches for a transmittable 30ms idle time slot, and because the time for the receiving party to press the key is random, the receiving terminal of the receiving party needs to search for a 30ms idle time slot after the corresponding signal to transmit a 30ms control signaling block;
s3, after finding the transmittable 30ms idle timeslot, before the receiving terminal transmits the control signaling block, the receiving terminal switches the receiving mode of the receiving terminal to the transmitting mode within a first predetermined time period immediately adjacent to the 30ms receiving timeslot before the transmittable 30ms idle timeslot, where the first predetermined time period may be selected from 5ms to 6ms, and preferably the first predetermined time period is 5.42 ms;
s4, the receiving terminal transmits a complete 30ms control signaling block in the 30ms idle time slot of the receiving side;
s5, after the 30ms control signaling block is transmitted, the receiving terminal occupies a second preset time length in a 30ms receiving time slot which is immediately after the transmittable 30ms idle time slot, and the transmitting mode of the receiving terminal is switched to the receiving mode; or, the receiving terminal is directly switched to a transmitting mode; typically the second predetermined period may be selected between 5ms and 6ms, preferably the second predetermined period is 5.42ms
S6, the transmitting party receives the 30ms control signaling block in the 30ms idle time slot of the corresponding transmitting party and extracts the effective data in the 30ms control signaling block.
Preferably, in step S4, the receiving terminal directly sends the 30ms control signaling block to the transmitting side (direct mode) when transmitting the complete 30ms control signaling block in the 30ms idle timeslot of the receiving side; or, the control signaling block of 30ms is sent to the base station, and is forwarded to the transmitting party (relay mode) after being analyzed by the base station.
Preferably, the predetermined bits of valid data are 16 bits.
Preferably, the channel coding uses a gray (20, 8) algorithm to generate 24-bit channel coding protection data.
Referring to fig. 2, fig. 2 discloses a method for implementing a reverse message through CSBK signaling in a pass-through mode, and fig. 2 illustrates an example where the first predetermined duration is 5ms and the second predetermined duration is also 5ms, but any value of the first predetermined duration being 5ms to 6ms and the second predetermined duration being also 5ms to 6ms is not excluded.
Referring to fig. 2, it can be seen from fig. 2 that when a receiving side wants to send a reverse message (i.e. a 30ms control signaling block) and presses a corresponding key, a receiving terminal automatically searches for a suitable 30ms idle slot (idle slot of the receiving side) to transmit the 30ms control signaling block, as shown in fig. 2, the receiving terminal is ready to transmit in the second 30ms idle slot of the receiving side, and then the receiving terminal takes out a 5ms duration in the second receiving slot to switch the receiving state of the receiving terminal to the transmitting state, and then transmits a complete 30ms control signaling block, and then takes out a 5ms duration in the third receiving slot to switch the transmitting state of the receiving terminal to the receiving state, thereby completing a 30ms control signaling block; of course, according to the difference of the content of the 30ms control signaling block, if the 30ms control signaling block is an interruption message, the receiving terminal does not need to switch from the transmitting state to the receiving state, but directly switches to the transmitting state, and uses the receiving terminal as the transmitting party;
meanwhile, in the direct mode, the transmitting party also receives the 30ms control signaling block in the 30ms idle slot of the transmitting party, except that the transmitting party needs to switch the transmitting state to the receiving state within the 30ms idle slot by using the first 5ms duration, and switch the receiving state to the transmitting state within the 30ms idle slot by using the later 5ms duration, or directly maintain the receiving state, and the transmitting party needs to extract the effective data in the 30ms control signaling block for the received 30ms control signaling block.
Referring to fig. 3, fig. 3 discloses a method for implementing a reverse message through CSBK signaling in a relay mode, and fig. 3 illustrates an example where the first predetermined duration is 5ms and the second predetermined duration is also 5ms, but any value of the first predetermined duration being 5ms to 6ms and the second predetermined duration being also 5ms to 6ms is not excluded.
As can be seen from fig. 3, when the receiving side wants to send a reverse message (i.e. 30ms control signaling block) and presses the corresponding key, the receiving terminal will automatically find a suitable 30ms idle slot (idle slot of the receiving side) to transmit the 30ms control signaling block, as shown in fig. 3, the receiving terminal is ready to transmit in the second 30ms idle slot of the receiving side, and then the receiving terminal takes out a time length of 5ms in the second receiving slot to switch the receiving state of the receiving terminal to the transmitting state, and then transmits a complete 30ms control signaling block, and then takes out a time length of 5ms in the third receiving slot to switch the transmitting state of the receiving terminal to the receiving state, thereby completing a 30ms control signaling block; of course, according to the difference of the content of the 30ms control signaling block, if the 30ms control signaling block is an interruption message, the receiving terminal does not need to switch from the transmitting state to the receiving state, but directly switches to the transmitting state, and uses the receiving terminal as the transmitting party;
unlike the illustration of fig. 2, in the relay mode, the 30ms control signaling block transmitted by the receiving terminal is not directly addressed to the transmitting side, the base station of the transmitting base station is analyzed by the base station and then forwarded to the transmitting party, and a time difference exists after the base station is analyzed and then forwarded, therefore, when the transmitting side receives the 30ms control signaling block in the 30ms idle slot of the transmitting side, the 30ms idle slot of the receiving side is not synchronized with the receiving side, whereas the 30ms idle slot later than the receiver, as in fig. 3, is the third idle slot of the transmitting side to receive the 30ms control signaling block, the same transmitting side needs to switch the transmitting state to the receiving state with the first 5ms duration in its 30ms idle slot, and the receiving state is switched to the transmitting state 5ms after the idle time slot of 30ms, or, directly keeping the state of receiving, the transmitting side needs to extract valid data in the 30ms control signaling block for the received 30ms control signaling block.
Referring to fig. 4, for the transmitting side, the 30ms control signaling block may be received in an idle slot between two transmitting slots in a normal reverse signaling reception manner. Due to the time limitation of the transmission and reception switching, on the premise of ensuring the normal transmission of the transmission time slot, the transmitting party cannot completely receive the data of the whole idle time slot, and only can receive the middle part of the CSBK signaling, which is about 160 bits of data, wherein the data comprises 48 bits of synchronous data, 20 bits of time slot type data and 92 bits of signaling data.
Therefore, the invention places the effective data in the reverse message in the middle part of the 30ms control signaling block and locates at both sides of the synchronous data, and the two ends of the 30ms control signaling block are set as the data which can be lost, so as to ensure that the transmitting party can completely receive the effective data in the transmitted 30ms control signaling block under the condition that the transmitting party does not receive the complete 30ms control signaling block.
According to the encoding format and interleaving rule of the CSBK message, 16 bits can be used for conveying effective data and the channel coding uses Gray (20, 8) to generate 24-bit channel coding protection data in consideration of error correction protection.
Claims (10)
1. A method for implementing reverse messaging via CSBK signaling, comprising: under the premise of not influencing the normal work of the transmitting terminal, the method comprises the following steps,
s1, the receiver with priority level presses the corresponding key on the receiving terminal, and transmits a standard 30ms control signaling block edited by channel coding, the control signaling block contains valid data with preset bits, and the valid data is arranged in the middle of the 30ms control signaling block;
s2, the receiving terminal of the receiving party automatically searches for a transmittable 30ms idle time slot;
s3, after finding the transmittable 30ms idle time slot, before the receiving terminal transmits the control signaling block, the receiving terminal switches the receiving mode of the receiving terminal into the transmitting mode within the first predetermined time length adjacent to the 30ms receiving time slot before the transmittable 30ms idle time slot;
s4, the receiving terminal transmits a complete 30ms control signaling block in the 30ms idle time slot of the receiving side;
s5, after the 30ms control signaling block is transmitted, the receiving terminal occupies a second preset time length in a 30ms receiving time slot which is immediately after the transmittable 30ms idle time slot, and the transmitting mode of the receiving terminal is switched to the receiving mode; or, the receiving terminal is directly switched to a transmitting mode;
s6, the transmitting party receives the 30ms control signaling block in the 30ms idle time slot of the corresponding transmitting party and extracts the effective data in the 30ms control signaling block.
2. A method for implementing reverse messaging via CSBK signaling according to claim 1, wherein: in step S4, the receiving terminal directly sends the 30ms control signaling block to the transmitting party when transmitting the complete 30ms control signaling block in the 30ms idle timeslot of the receiving party; or sending the 30ms control signaling block to the base station, and forwarding to the transmitting party after the analysis by the base station.
3. A method for implementing a reverse message by CSBK signalling according to claim 1 or 2, characterized in that: the predetermined bits of valid data are 16 bits.
4. A method for implementing a reverse message by CSBK signalling according to claim 1 or 2, characterized in that: the channel coding uses a Gray (20, 8) algorithm to generate 24-bit channel coding protection data.
5. A method for implementing a reverse message by CSBK signalling according to claim 1 or 2, characterized in that: the first predetermined length of time is selected between 5ms and 6 ms.
6. A method for implementing reverse messaging via CSBK signaling according to claim 5, wherein: the first predetermined period of time is 5.42 ms.
7. A method for implementing a reverse message by CSBK signalling according to claim 1 or 2, characterized in that: the second predetermined length of time is selected between 5ms and 6 ms.
8. A method for implementing reverse messaging via CSBK signaling according to claim 7, wherein: the second predetermined period of time is 5.42 ms.
9. A method for implementing reverse messaging via CSBK signaling according to claim 5, wherein: the second predetermined length of time is selected between 5ms and 6 ms.
10. A method for implementing reverse messaging via CSBK signaling according to claim 9, wherein: the second predetermined period of time is 5.42 ms.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911247804.0A CN110890941B (en) | 2019-12-09 | 2019-12-09 | Method for realizing reverse message through CSBK signaling |
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| CN201911247804.0A CN110890941B (en) | 2019-12-09 | 2019-12-09 | Method for realizing reverse message through CSBK signaling |
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| CN110890941A true CN110890941A (en) | 2020-03-17 |
| CN110890941B CN110890941B (en) | 2021-12-14 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101931500A (en) * | 2010-08-19 | 2010-12-29 | 优能通信科技（杭州）有限公司 | Method for transmitting backward control signaling by using control channel in DMR system |
| CN101960769A (en) * | 2008-02-29 | 2011-01-26 | 摩托罗拉公司 | Method to scan for critical transmissions while transmitting on a conventional time division multiple access channel |
| CN102164415A (en) * | 2011-04-14 | 2011-08-24 | 海能达通信股份有限公司 | Method, base station and terminal for obtaining extended information |
| CN104159280A (en) * | 2014-08-01 | 2014-11-19 | 科立讯通信股份有限公司 | Method for reducing power consumption of DMR terminal circuit |
| CN106656420A (en) * | 2016-12-23 | 2017-05-10 | 海能达通信股份有限公司 | Reverse signaling transmission method, device of private network system and communication equipment |
-
2019
- 2019-12-09 CN CN201911247804.0A patent/CN110890941B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101960769A (en) * | 2008-02-29 | 2011-01-26 | 摩托罗拉公司 | Method to scan for critical transmissions while transmitting on a conventional time division multiple access channel |
| CN101931500A (en) * | 2010-08-19 | 2010-12-29 | 优能通信科技（杭州）有限公司 | Method for transmitting backward control signaling by using control channel in DMR system |
| CN102164415A (en) * | 2011-04-14 | 2011-08-24 | 海能达通信股份有限公司 | Method, base station and terminal for obtaining extended information |
| CN104159280A (en) * | 2014-08-01 | 2014-11-19 | 科立讯通信股份有限公司 | Method for reducing power consumption of DMR terminal circuit |
| CN106656420A (en) * | 2016-12-23 | 2017-05-10 | 海能达通信股份有限公司 | Reverse signaling transmission method, device of private network system and communication equipment |
Non-Patent Citations (2)
| Title |
|---|
| 刘辉等: "基于DMR通信协议的信道编码的研究", 《现代电子技术》 * |
| 陈齐铝: "专用线数字无线通信系统方案研究", 《通讯世界》 * |
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