GA/T 1056-2013 PDF English
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Police digital trunking communication system-General technical specifications
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GA/T 1056-2013: Police digital trunking communication system-General technical specifications---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GAT1056-2013
GA
PUBLIC SECURITY INDUSTRY STANDARD
ICS 33.060.01
A 90
Police digital trunking communication system - General
technical specifications
Issued on. MARCH 20, 2013
Implemented on. MARCH 20, 2013
Issued by. Ministry of Public Security of the People's Republic of China
Table of Contents
Foreword... 4
Introduction... 5
1 Scope... 6
2 Normative references... 6
3 Terms and definitions... 7
3.1 Terms and definitions... 7
3.2 Abbreviations... 9
4 System technical characteristics... 9
5 System configuration and functional requirements... 12
6 Frequency planning... 20
Table 2 -- Single-band frequency numbering... 21
Table 3 -- Dual-band frequency 1 numbering... 21
Table 4 -- Dual-band frequency 2 numbering... 22
7 Address and identification code... 22
8 Network management... 29
9 System Interconnection... 30
10 Basic performance indicators of channel equipment... 33
11 Secure encryption... 36
Figure 7 -- Security mechanism diagram... 37
12 Electrical safety... 37
13 Power adaptability... 37
14 Mechanical structure safety... 38
15 Environmental and electromagnetic compatibility requirements... 38
16 Reliability requirements... 39
17 Transportation and packaging requirements... 39
1 Scope
This Standard specifies the technical characteristics, system composition and functional
requirements, operating frequency band, address and identification code, network
management, basic performance indicators of channel equipment, AC power supply
system, information security and confidentiality, environment and electromagnetic
compatibility, reliability and other general requirements of the police digital trunking
(PDT) communication system.
This Standard applies to the overall planning, network design, equipment development,
production, engineering construction and acceptance of the police digital trunking (PDT)
communication system.
2 Normative references
The following referenced documents are indispensable for the application of this
document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
GB/T 7610-1987, Characteristics of pulse code modulation for voice-frequencies
GB/T 13426-1992, Reliability requirements and test methods for digital
communication equipment
GB/T 14013-1992, Mobile communication equipment -- Transport package
GB/T 15540-2006, EMC specification and test methods for land mobile
communication equipment
GB/T 15844.3-1995, Reliability requirements and test methods for radio transceiver
employing F3E emission used in the mobile services
GB/T 17626.2-2006, Electromagnetic compatibility (EMC) -- Testing and
measurement techniques -- Electrostatic discharge immunity test
3 Terms and definitions
3.1 Terms and definitions
The following terms and definitions apply to this document.
3.2 Abbreviations
The following abbreviations apply to this document.
BS. Base Station
DMO. Direct Mode
FGN. Fleet Group Number
FIN. Fleet Individual Number
GN. Group Number
4 System technical characteristics
4.1 Basic technical system
4.1.1 Technical system
4.1.2 RF modulation method
The RF modulation method uses four-level frequency shift keying (4FSK).
4.1.3 Modulation rate
The modulation is transmitted at 4800 symbols/s. Each symbol consists of two bits of
information.
4.1.4 Speech coding
The speech coding rate shall be greater than or equal to 2 kbps. The rate after speech
coding plus channel coding shall be 3.6 kbps.
4.2 Basic system services
4.2.1 User terminal services
User terminal services are services that provide complete communication capabilities
between user terminals.
4.2.2 Carrying services
Carrying services are telecommunication services that provide signal transmission
capabilities between user terminals and network interfaces.
4.3 Basic protocols and signaling
The basic protocols and signaling of the air interface shall comply with the provisions
of GA/T 1057-2013 and GA/T 1058-2013.
4.4 System working modes
4.5 Call setup time
The time to establish a group call within the same exchange shall be less than or equal
to 300 ms.
5 System configuration and functional requirements
5.1 System configuration
5.1.1 Network infrastructure
Network infrastructure equipment includes switches, gateways, network management
equipment, base station control equipment and access points, as shown in Figure 1.
5.1.2 User terminal equipment
5.2 Functional requirements
5.2.1 Functional definition
5.2.1.1 Registration
Registration is the process of a mobile station initiating a network access request and
confirming it to the trunking system. Authentication may be required during registration.
5.2.1.5 Voice private call
A voice private call is a point-to-point two-way voice call established between a mobile
station and other user terminals. The participants of a call are only the caller and the
called party. There are two types of voice private calls between mobile stations.
FOACSU and OACSU.
5.2.1.10 Emergency call
An emergency call is a special call initiated by a user in an emergency situation. It has
the highest priority. When there are no channel resources, the system will release
channel resources of other low-level calls for emergency calls.
5.2.1.11 Priority call
Priority calls are calls that are given priority to obtain resources when the system is
busy. The way to obtain resources can be to seize the channel of low-priority calls or to
jump the queue in the queue.
5.2.1.12 Alarm
An alarm is when a user presses a special button on a mobile station device in an
emergency, sending a predefined status message to a pre-set destination (mobile station
or dispatch station) on the system control channel to notify other mobile stations or
dispatch stations that the user is in an emergency state.
5.2.1.14 Monitoring
Monitoring refers to the process of authorizing a user terminal to obtain voice on a
specified mobile station, talk group or channel.
5.2.1.15 Interruption
Interruption means that when the dispatch station is monitoring or participating in a
voice call, it forcibly interrupts the ongoing speech and seizes the right to speak.
5.2.1.16 Forced disconnection
Forced disconnection refers to the process in which the system forcibly disconnects an
ongoing call and releases the corresponding resources occupied.
5.2.1.17 Handover
Handover refers to the process in which a mobile station switches base stations during
a voice call without interrupting the ongoing service.
5.2.1.18 Call time limit
The call time limit is a function that the system uses to control the maximum duration
allowed for a user to make a voice call, including a single push-to-talk time limit and a
single call total duration limit.
6 Frequency planning
6.1 Operating frequency band
There are three frequency bands at 350 MHz available for PDT use (other frequency
bands are subject to the relevant regulations of the national radio management
department).
6.2 Frequency number
6.2.1 Frequency numbering rules
The starting frequency of the single-band frequency is 358.0125 MHz. The starting
frequency number is 1.The frequency interval is 12.5 kHz.
6.2.2 Single-band frequency numbering
The numbering rules for single-band frequencies are shown in Table 2.
6.2.3 Dual-band frequency 1 numbering
The numbering rules for dual-band frequency 1 are shown in Table 3.
6.2.4 Dual-band frequency 2 numbering
The numbering rules for dual-band frequency 2 are shown in Table 4.
7 Address and identification code
7.1 System parameters
7.1.1 Network scale parameters (Model)
The network scale parameter is used to identify the scale of the network. According to
the network planning of the public security, the Large Network is selected, Model=102.
7.1.3 Network zone identifier (NZI)
It identifies the administrative region number of each province, autonomous region, and
municipality directly under the central government in the entire network, a total of 6
bits. See Table 6 for NZI code allocation.
7.2 User number and address definition
7.2.1 Air interface user address definition
The length of the PDT air interface user address (ID) is 24 bits. There is another 1 bit
to indicate the single call or group call address. The user address is divided into two
parts in binary representation. The first 9 bits are the network area identification number
(NAI). The last 15 bits are the short single call address code (SSI) or short group call
address code (SGI), see Table 7.
7.2.3.3 Relationship between the single call address code and the segment single
call number
7.2.4 Group call number
7.2.4.1 Short group call address code
The short group call address code is 15 bits long, expressed in decimal form as 0~32767,
where 0 is a blank number; 1~17000 are group call user numbers, 32767 is a full call
number, and other addresses are reserved.
8 Network management
8.1 Network management overview
Network management (abbreviated as "NM") can be divided into two types according
to the basic network structure. single switching center NM and multi-switching center
NM.
8.3 Multi-switching center network management
The network management of multi-switching centers is completed by local network
management and central network management organizations.
8.4 Basic functions of network management
The network management system shall have the following basic functions.
8.5 Hierarchical architecture of network management
The PDT network uses a virtual three-level management architecture, see Figure 4.
9 System Interconnection
9.1 Interconnection scope of PDT system
PDT system interconnection includes the following parts.
9.2 Interconnection between PDT systems
9.2.1 PDT system network design
The PDT system network interconnection design shall be based on the full IP soft
switching technology designed in the logical domain, which can reflect the maximum
flexibility, compatibility and scalability.
9.2.4 Signaling for interconnection between PDT systems
It complies with the pSIP protocol specified in the police digital trunking (PDT)
communication system.
9.2.5 Voice transmission protocol for interconnection between PDT systems
PDT interconnection voice transmission uses RTP (real-time transport protocol). The
voice format carried by RTP is PDT voice coding.
9.3 Interconnection between PDT and MPT 1327
9.4 Interconnection between PDT and other heterogeneous systems
The interconnection between PDT and other special systems shall be specified
separately as needed.
GA/T 1056-2013
GA
PUBLIC SECURITY INDUSTRY STANDARD
ICS 33.060.01
A 90
Police digital trunking communication system - General
technical specifications
Issued on. MARCH 20, 2013
Implemented on. MARCH 20, 2013
Issued by. Ministry of Public Security of the People's Republic of China
Table of Contents
Foreword... 4
Introduction... 5
1 Scope... 6
2 Normative references... 6
3 Terms and definitions... 7
3.1 Terms and definitions... 7
3.2 Abbreviations... 9
4 System technical characteristics... 9
5 System configuration and functional requirements... 12
6 Frequency planning... 20
Table 2 -- Single-band frequency numbering... 21
Table 3 -- Dual-band frequency 1 numbering... 21
Table 4 -- Dual-band frequency 2 numbering... 22
7 Address and identification code... 22
8 Network management... 29
9 System Interconnection... 30
10 Basic performance indicators of channel equipment... 33
11 Secure encryption... 36
Figure 7 -- Security mechanism diagram... 37
12 Electrical safety... 37
13 Power adaptability... 37
14 Mechanical structure safety... 38
15 Environmental and electromagnetic compatibility requirements... 38
16 Reliability requirements... 39
17 Transportation and packaging requirements... 39
1 Scope
This Standard specifies the technical characteristics, system composition and functional
requirements, operating frequency band, address and identification code, network
management, basic performance indicators of channel equipment, AC power supply
system, information security and confidentiality, environment and electromagnetic
compatibility, reliability and other general requirements of the police digital trunking
(PDT) communication system.
This Standard applies to the overall planning, network design, equipment development,
production, engineering construction and acceptance of the police digital trunking (PDT)
communication system.
2 Normative references
The following referenced documents are indispensable for the application of this
document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
GB/T 7610-1987, Characteristics of pulse code modulation for voice-frequencies
GB/T 13426-1992, Reliability requirements and test methods for digital
communication equipment
GB/T 14013-1992, Mobile communication equipment -- Transport package
GB/T 15540-2006, EMC specification and test methods for land mobile
communication equipment
GB/T 15844.3-1995, Reliability requirements and test methods for radio transceiver
employing F3E emission used in the mobile services
GB/T 17626.2-2006, Electromagnetic compatibility (EMC) -- Testing and
measurement techniques -- Electrostatic discharge immunity test
3 Terms and definitions
3.1 Terms and definitions
The following terms and definitions apply to this document.
3.2 Abbreviations
The following abbreviations apply to this document.
BS. Base Station
DMO. Direct Mode
FGN. Fleet Group Number
FIN. Fleet Individual Number
GN. Group Number
4 System technical characteristics
4.1 Basic technical system
4.1.1 Technical system
4.1.2 RF modulation method
The RF modulation method uses four-level frequency shift keying (4FSK).
4.1.3 Modulation rate
The modulation is transmitted at 4800 symbols/s. Each symbol consists of two bits of
information.
4.1.4 Speech coding
The speech coding rate shall be greater than or equal to 2 kbps. The rate after speech
coding plus channel coding shall be 3.6 kbps.
4.2 Basic system services
4.2.1 User terminal services
User terminal services are services that provide complete communication capabilities
between user terminals.
4.2.2 Carrying services
Carrying services are telecommunication services that provide signal transmission
capabilities between user terminals and network interfaces.
4.3 Basic protocols and signaling
The basic protocols and signaling of the air interface shall comply with the provisions
of GA/T 1057-2013 and GA/T 1058-2013.
4.4 System working modes
4.5 Call setup time
The time to establish a group call within the same exchange shall be less than or equal
to 300 ms.
5 System configuration and functional requirements
5.1 System configuration
5.1.1 Network infrastructure
Network infrastructure equipment includes switches, gateways, network management
equipment, base station control equipment and access points, as shown in Figure 1.
5.1.2 User terminal equipment
5.2 Functional requirements
5.2.1 Functional definition
5.2.1.1 Registration
Registration is the process of a mobile station initiating a network access request and
confirming it to the trunking system. Authentication may be required during registration.
5.2.1.5 Voice private call
A voice private call is a point-to-point two-way voice call established between a mobile
station and other user terminals. The participants of a call are only the caller and the
called party. There are two types of voice private calls between mobile stations.
FOACSU and OACSU.
5.2.1.10 Emergency call
An emergency call is a special call initiated by a user in an emergency situation. It has
the highest priority. When there are no channel resources, the system will release
channel resources of other low-level calls for emergency calls.
5.2.1.11 Priority call
Priority calls are calls that are given priority to obtain resources when the system is
busy. The way to obtain resources can be to seize the channel of low-priority calls or to
jump the queue in the queue.
5.2.1.12 Alarm
An alarm is when a user presses a special button on a mobile station device in an
emergency, sending a predefined status message to a pre-set destination (mobile station
or dispatch station) on the system control channel to notify other mobile stations or
dispatch stations that the user is in an emergency state.
5.2.1.14 Monitoring
Monitoring refers to the process of authorizing a user terminal to obtain voice on a
specified mobile station, talk group or channel.
5.2.1.15 Interruption
Interruption means that when the dispatch station is monitoring or participating in a
voice call, it forcibly interrupts the ongoing speech and seizes the right to speak.
5.2.1.16 Forced disconnection
Forced disconnection refers to the process in which the system forcibly disconnects an
ongoing call and releases the corresponding resources occupied.
5.2.1.17 Handover
Handover refers to the process in which a mobile station switches base stations during
a voice call without interrupting the ongoing service.
5.2.1.18 Call time limit
The call time limit is a function that the system uses to control the maximum duration
allowed for a user to make a voice call, including a single push-to-talk time limit and a
single call total duration limit.
6 Frequency planning
6.1 Operating frequency band
There are three frequency bands at 350 MHz available for PDT use (other frequency
bands are subject to the relevant regulations of the national radio management
department).
6.2 Frequency number
6.2.1 Frequency numbering rules
The starting frequency of the single-band frequency is 358.0125 MHz. The starting
frequency number is 1.The frequency interval is 12.5 kHz.
6.2.2 Single-band frequency numbering
The numbering rules for single-band frequencies are shown in Table 2.
6.2.3 Dual-band frequency 1 numbering
The numbering rules for dual-band frequency 1 are shown in Table 3.
6.2.4 Dual-band frequency 2 numbering
The numbering rules for dual-band frequency 2 are shown in Table 4.
7 Address and identification code
7.1 System parameters
7.1.1 Network scale parameters (Model)
The network scale parameter is used to identify the scale of the network. According to
the network planning of the public security, the Large Network is selected, Model=102.
7.1.3 Network zone identifier (NZI)
It identifies the administrative region number of each province, autonomous region, and
municipality directly under the central government in the entire network, a total of 6
bits. See Table 6 for NZI code allocation.
7.2 User number and address definition
7.2.1 Air interface user address definition
The length of the PDT air interface user address (ID) is 24 bits. There is another 1 bit
to indicate the single call or group call address. The user address is divided into two
parts in binary representation. The first 9 bits are the network area identification number
(NAI). The last 15 bits are the short single call address code (SSI) or short group call
address code (SGI), see Table 7.
7.2.3.3 Relationship between the single call address code and the segment single
call number
7.2.4 Group call number
7.2.4.1 Short group call address code
The short group call address code is 15 bits long, expressed in decimal form as 0~32767,
where 0 is a blank number; 1~17000 are group call user numbers, 32767 is a full call
number, and other addresses are reserved.
8 Network management
8.1 Network management overview
Network management (abbreviated as "NM") can be divided into two types according
to the basic network structure. single switching center NM and multi-switching center
NM.
8.3 Multi-switching center network management
The network management of multi-switching centers is completed by local network
management and central network management organizations.
8.4 Basic functions of network management
The network management system shall have the following basic functions.
8.5 Hierarchical architecture of network management
The PDT network uses a virtual three-level management architecture, see Figure 4.
9 System Interconnection
9.1 Interconnection scope of PDT system
PDT system interconnection includes the following parts.
9.2 Interconnection between PDT systems
9.2.1 PDT system network design
The PDT system network interconnection design shall be based on the full IP soft
switching technology designed in the logical domain, which can reflect the maximum
flexibility, compatibility and scalability.
9.2.4 Signaling for interconnection between PDT systems
It complies with the pSIP protocol specified in the police digital trunking (PDT)
communication system.
9.2.5 Voice transmission protocol for interconnection between PDT systems
PDT interconnection voice transmission uses RTP (real-time transport protocol). The
voice format carried by RTP is PDT voice coding.
9.3 Interconnection between PDT and MPT 1327
9.4 Interconnection between PDT and other heterogeneous systems
The interconnection between PDT and other special systems shall be specified
separately as needed.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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