CN104936158A - Channel configuration method based on TETRA signaling model - Google Patents
Channel configuration method based on TETRA signaling model Download PDFInfo
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- CN104936158A CN104936158A CN201510196665.9A CN201510196665A CN104936158A CN 104936158 A CN104936158 A CN 104936158A CN 201510196665 A CN201510196665 A CN 201510196665A CN 104936158 A CN104936158 A CN 104936158A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/20—Services signaling; Auxiliary data signalling, i.e. transmitting data via a non-traffic channel
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a channel configuration method based on a TETRA signaling model, belonging to the field of professional digital cluster communication, and especially to equipment of a TETRA digital cluster system. In the method, the type of a physical channel and the work mode of a service channel are pre-determined according to the TETRA signaling model and signaling content, when it is pre-determined that the service channel is to be a service mode, a signaling mode or an un-distributed mode according to the signaling content, the service channel is immediately configured to a corresponding mode by a configuration channel in the system, and the mode is indicated by an ACCH sent by an air interface. Thus, the channel type is rapidly pre-determined, the mode of the service channel is configured at high speed, it is ensured that a receiving party can accurately and reliably receive down signaling from the system, and further reliable and efficiency communication of the TETRA system is ensured.
Description
Technical field
The invention belongs to wireless communication field, particularly relate to TETRA special digital Group communication devices.
Background technology
TETRA is the wireless communication system of the open standard that ETS association (ETSI) designs the demand of proprietary radio communication in order to the specialized department meeting European Countries, is widely used in Europe.It is one of four standards of Chinese Digital trunking communication recommendation type that China will also establish TETRA the end of the year 2000.TETRA standard is the most careful, opening is best, technology is most advanced, participation manufacturer the is maximum digital cluster system formulated at present compared to other standards.
TETRA agreement has used for reference the concept of GSM in a large number, adopts 4 time slot time division multiple access (TDMA) technology, and the carrier wave of a 25KHz bandwidth supports 4 time-derived channels.TETRA channel is divided into physically: Main control channel and Traffic Channel, 1st time slot of TETRA main carrier is used as Main control channel, TETRA Main control channel is the signalling path of TETRA system, the non-channel of the 1st time slot of main carrier and all channels of non-main carrier are then Traffic Channels, be used for carrying TETRA business (comprising speech business and data service) data, be the media channel of TETRA, but also can use as signalling path.
The logic channel of TETRA standard definition has: the logic channels such as AACH, BSCH, TCH2.4, TCH/4.8, TCH/7.2, SCH/HD, BNCH, STCH, SCH/HU, SCH/F.
Namely TETRA standard definition physical channel has 3 kinds of mode of operations: signaling mode, business model and unallocated pattern, only have a kind of pattern for Main control channel, i.e. signaling mode, and for Traffic Channel, all likely occur according to different type of service 3 kinds of patterns.
The logic channel that Traffic Channel is used in different modes is different, and the channel coding method that different logic channels adopts also is different (see Fig. 1).If channelling mode configuration is incorrect, or configuration incorrect meeting on opportunity has influence on, and reciever is correctly decoded reception to message, and therefore, the mode of operation of correct configuration service channel becomes a crucial problem.
Summary of the invention
Technical problem to be solved by this invention is: based on TETRA signaling model, anticipation is carried out to the pre-signaling occurred, by being configured Traffic Channel of collocation channel automation, the signaling of traditional TETRA call control layer needs just can reach UMAC layer through CMCE, MLE, LLC layer of TETRA, and TETRA call control layer sends configuration signal directly to UMAC layer in the present invention, can guarantee that configuration signal can deliver to UMAC fast like this, thus guarantee that the high speed that TETRA channelling mode switches is effective, greatly improve the service behaviour of TETRA system.
In order to solve the problems of the technologies described above, the present invention is achieved through the following technical solutions, a kind of channel arrangement method based on TETRA signaling model, and concrete steps are as follows:
The signaling message that step 1:TETRA system acceptance TETRA terminal sends;
Step 2:TETRA system carries out the anticipation analysis of physical channel type to the signaling message received based on TETRA signaling model; If the signaling message of Main control channel, then enter step 3; If the signaling message of Traffic Channel, then enter step 5;
Step 3: judge whether the signaling message of Main control channel can produce traffic channel assignments, if can produce traffic channel assignments, then enters step 4 according to signaling message types, otherwise process ends;
The call control layer of step 4:TETRA system sends configuration signal by the passage of the UMAC layer directly arriving TETRA system, and this configuration signal is business model, then process ends traffic channel configuration;
Step 5: judge whether the signaling message of Traffic Channel can produce the switching of mode of operation, if the switching of mode of operation can not be produced, then process ends; If the switching of mode of operation can be produced, then enter step 6;
Step 6: according to the type of the mode of operation that Traffic Channel is switched to, the call control layer of TETRA system sends configuration signal by the passage of the UMAC layer directly arriving TETRA system, the mode of operation that this configuration signal becomes to be switched to traffic channel configuration, then process ends.
Wherein, described TETRA system comprises channel device, TETRA base station controller, switching center, the wired dispatching desk of TETRA and TETRA gateway.
Wherein, described TETRA terminal comprises TETRA hand-held station, TETRA Vehicle mounted station or TETRA fixed station.
Wherein, the mode of operation in described step 5 is specially: signaling mode, business model and unallocated pattern.
Wherein, the call control layer of described TETRA system is specially by the passage transmission configuration signal directly arriving UMAC layer: the process of the call control layer of TETRA system is directly by the process transmission configuration signal of udp protocol to the UMAC layer of TETRA system.
Wherein, in described step 6, configuration signal is specially the mode of operation that traffic channel configuration becomes to be switched to: if mode of operation is switched to business model, then traffic channel configuration is become business model; If mode of operation is switched to signaling mode, then traffic channel configuration is become signaling mode; If mode of operation is switched to unallocated pattern, then traffic channel configuration is become unallocated pattern.
Adopt the beneficial effect that technique scheme produces:
Method of the present invention is based on the model of TETRA signaling, and TETRA signaling model is with reference to the signaling process described by TETRA standard document " ETSI EN30039202 ".The content that the present invention is based on signaling can the mode of operation of anticipation Traffic Channel timely fast, and by special collocation channel configurating channel pattern fast, and channelling mode that can be current by the instruction that TETRA logic channel AACH is correct, thus ensure that the correct effective mutual of TETRA space interface signaling.
Accompanying drawing explanation
Fig. 1 is the chnnel coding flow chart of TETRA logic channel of the present invention;
Fig. 2 is the signaling anticipation flow chart based on TETRA signaling model of the present invention;
Fig. 3 is TETRA call flow signaling of the present invention anticipation.
Embodiment
TETRA Traffic Channel support voice business and data service, because data service is all sent by signaling mode, therefore during TETRA Traffic Channel bearing data service, the polymerization carrying out media channel and signalling path is not needed to control, only when carry voice calls business, just need that polymerization is carried out to channelling mode and control.
Fig. 2 is the signaling anticipation flow process based on TETRA signaling model, and composition graphs 2 is described below detailed process of the present invention:
The signaling message that step 1:TETRA system acceptance TETRA terminal sends;
Described TETRA system comprises the relevant control and management equipment such as channel device, TETRA base station controller, switching center, the wired dispatching desk of TETRA, TETRA gateway; Described TETRA terminal comprises TETRA hand-held station, TETRA Vehicle mounted station or TETRA fixed station;
Step 2:TETRA system carries out the anticipation analysis of physical channel type to the signaling message received based on TETRA signaling model; If the signaling message of Main control channel, then enter step 3; If the signaling message of Traffic Channel, then enter step 5;
Described TETRA signaling model is with reference to the signaling process described by TETRA standard document " ETSI EN30039202 ";
Step 3: judge whether the signaling message of Main control channel can produce traffic channel assignments, if can produce traffic channel assignments, then enters step 4 according to signaling message types, otherwise process ends;
The process of the call control layer of step 4:TETRA system is directly by the process transmission configuration signal of udp protocol to the UMAC layer of TETRA system, and this configuration signal is business model, then process ends traffic channel configuration;
Step 5: judge whether the signaling message of Traffic Channel can produce the switching of mode of operation, if the switching of mode of operation can not be produced, then process ends; If the switching of mode of operation can be produced, then enter step 6;
Step 6: according to the type of the mode of operation that Traffic Channel is switched to, the process of the call control layer of TETRA system is directly by the process transmission configuration signal of udp protocol to the UMAC layer of TETRA system, if mode of operation is switched to business model, this configuration signal then becomes business model traffic channel configuration; If mode of operation is switched to signaling mode, this configuration signal then becomes signaling mode traffic channel configuration; If mode of operation is switched to unallocated pattern, this configuration signal then becomes unallocated pattern traffic channel configuration; Then process ends;
Composition graphs 3 is described in further detail the method for the invention when transmitting voice service.
1. when TETRA system receives U-SETUP (setup requests) signaling message, system responses D-SETUP message (band traffic channel assignments), based on TETRA signaling model, can anticipation system by use Traffic Channel and Traffic Channel default mode is business model, can be therefore business model (media channel) traffic channel configuration by special collocation channel.
2. TETRA system receives U-TX DEMAND signaling, system responses D-TX GTANTED message (business transmission is authorized), based on TETRA signaling model, anticipation system can will use Traffic Channel, if former channel is signaling mode, Traffic Channel will be switched to business model from signaling mode, can be business model by special collocation channel traffic channel configuration; If former channel is business model, mode of operation remains unchanged (media channel).
3. TETRA system receives U-TX CEASED signaling, system responses D-TX CEASED message (business transmission stops), based on TETRA signaling model, anticipation system can will use signaling channel, if former channel is business model, Traffic Channel will be switched to signaling mode from business model, can be signaling mode by special collocation channel traffic channel configuration; If former channel is signaling mode, mode of operation remains unchanged (signalling path).
4. TETRA system receives U-DISCONNECT signaling, system responses D-RELEASE message (business transmission stops), based on TETRA signaling model, anticipation system can will discharge channel, Traffic Channel will be released and not re-use, and can be therefore unallocated pattern (passage does not use) traffic channel configuration by special collocation channel.
In sum, these are only preferred application example of the present invention, be not intended to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1., based on a channel arrangement method for TETRA signaling model, it is characterized in that comprising the following steps:
The signaling message that step 1:TETRA system acceptance TETRA terminal sends;
Step 2:TETRA system carries out the anticipation analysis of physical channel type to the signaling message received based on TETRA signaling model; If the signaling message of Main control channel, then enter step 3; If the signaling message of Traffic Channel, then enter step 5;
Step 3: judge whether the signaling message of Main control channel can produce traffic channel assignments, if can produce traffic channel assignments, then enters step 4 according to signaling message types, otherwise process ends;
The call control layer of step 4:TETRA system sends configuration signal by the passage of the UMAC layer directly arriving TETRA system, and this configuration signal is business model, then process ends traffic channel configuration;
Step 5: judge whether the signaling message of Traffic Channel can produce the switching of mode of operation, if the switching of mode of operation can not be produced, then process ends; If the switching of mode of operation can be produced, then enter step 6;
Step 6: according to the type of the mode of operation that Traffic Channel is switched to, the call control layer of TETRA system sends configuration signal by the passage of the UMAC layer directly arriving TETRA system, the mode of operation that this configuration signal becomes to be switched to traffic channel configuration, then process ends.
2. a kind of channel arrangement method based on TETRA signaling model according to claim 1, is characterized in that: described TETRA system comprises channel device, TETRA base station controller, switching center, the wired dispatching desk of TETRA and TETRA gateway.
3. a kind of channel arrangement method based on TETRA signaling model according to claim 1, is characterized in that: described TETRA terminal comprises TETRA hand-held station, TETRA Vehicle mounted station or TETRA fixed station.
4. a kind of channel arrangement method based on TETRA signaling model according to claim 1, is characterized in that: the mode of operation in described step 5 is specially: signaling mode, business model and unallocated pattern.
5. a kind of channel arrangement method based on TETRA signaling model according to claim 1, is characterized in that: the call control layer of described TETRA system sends configuration signal by the passage directly arriving UMAC layer and is specially: the process of the call control layer of TETRA system is directly by the process transmission configuration signal of udp protocol to the UMAC layer of TETRA system.
6. a kind of channel arrangement method based on TETRA signaling model according to claim 1, it is characterized in that: in described step 6, configuration signal is specially the mode of operation that traffic channel configuration becomes to be switched to: if mode of operation is switched to business model, then traffic channel configuration is become business model; If mode of operation is switched to signaling mode, then traffic channel configuration is become signaling mode; If mode of operation is switched to unallocated pattern, then traffic channel configuration is become unallocated pattern.
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2015
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