CN104284318B - The recognition methods of urgent call in a kind of TD LTE systems - Google Patents
The recognition methods of urgent call in a kind of TD LTE systems Download PDFInfo
- Publication number
- CN104284318B CN104284318B CN201310285680.1A CN201310285680A CN104284318B CN 104284318 B CN104284318 B CN 104284318B CN 201310285680 A CN201310285680 A CN 201310285680A CN 104284318 B CN104284318 B CN 104284318B
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- China
- Prior art keywords
- call service
- core net
- terminal
- filter
- emergence call
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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
- H04W4/90—Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/50—Connection management for emergency connections
Abstract
This application discloses a kind of recognition methods of urgent call in TD LTE systems, this method includes：A, terminal is initiated to ask for the bearing resource of emergence call service to core net；B, core net receives the bearing resource request of terminal, core net is that emergence call service distributes new carrying or the existing carrying of modification according to local policy, preserves the corresponding relation of traffic flow template TFT, IP filter PF and emergence call service corresponding to the carrying；C, core net receives the business datum that service server issues terminal, and core net extracts IP information and/or port information in business data packet, and in each traffic flow template of terminal, is matched with the information preserved in IP filter；For the IP filter of successful match, if core net saves the corresponding relation of the IP filter and emergence call service, the business data packet is identified as emergence call service data.Application scheme is not increasing network side equipment and cost, and on the basis of not influenceing the utilization rate of resources of core network, can make core net that emergence call service fast and effectively be identified.
Description
Technical field
The application is related to a kind of identification side of urgent call in mobile communication technology field, more particularly to TD-LTE system
Method.
Background technology
With the communication technology and the development of network architecture flattening and a variety of high-speed wideband mobile wireless access skill
Art continues to bring out, in order to ensure third generation mobile Partnership Program（3GPP, 3rd Generation Partnership
Project）Competitiveness, and consider that the wireless communication system of evolution can be provided with lower cost and shorter transmission delay
Higher transmission rate, while support mobility between 3GPP inter Access Systems and 3GPP access systems and non-3 gpp to connect
Enter the mobility between system, improve 3GPP system ability and performance, reduce cost, 3GPP proposes System Architecture Evolution
（LTE/SAE, Long Term Evolution, Long Term Evolution/System Architecture Evolution,）The next generation
The communication technology and framework theory.Evolution of the SAE as GPRS core network, there is the characteristics of simplified framework, full IPization network, it is right
The 3GPP Radio Access Networks of higher throughput and more low latency（RAN, Radio Access Network）And non-3 gpp
System access provides support.
Urgent call（Emergency Call）Business refers to user in case of emergency, the calling industry initiated by terminal
Business.It is a fixed number generally in a region, such as the 911 of the U.S., Chinese 110/119 etc., operator also can root
According to itself needing to configure more emergency telephone numbers.Other business are different from, emergence call service will to the success rate of business
Ask higher, i.e. the priority of urgent call is higher than other types of service, should be preferably urgent in the case of inadequate resource
Call business is serviced；Meanwhile emergence call service requires higher, the i.e. movement of emergency call user to the continuity of business
Property management enjoy priority service power.
System based on TD-LTE is generally made up of terminal, base station, core net and the part of business network four, each in system
Part is required to that emergence call service is identified.Terminal needs to Client-initiated call business and received
Exhaled whether business is that emergence call service is identified；Whether base station needs to be to carry out because of emergence call service to user
Wireless access be identified, meanwhile, whether the subscriber paging operation that base station needs to carry out core net is because urgent call
Business and caused be identified；Whether it is that emergence call service is carried out to the business operation of user that core net is required to identification
Identification, so as to carry out urgent paging operation to the terminal of idle condition；Business network needs the industry initiated terminal user
Whether business is that emergence call service is identified and handled.
Under the SAE frameworks of TD-LTE system, recognition methods of the core net to emergence call service mainly has following two kinds：
1) it is based on IP multimedia subsystem（IMS, IP Multimedia Subsystem）Middle emergency call service control is single
Member（E-CSCF, Emergency-Call Server Control Function）Recognition methods.
In 3GPP LTE standard, the IMS systems for supporting E-CSCF, the strategy of use is terminal and the E- in IMS
CSCF establishes the IP connection access networks dedicated for emergence call service（IP-CAN,IP Connectivity Access
Network,）Connection；Meanwhile terminal and the APN in core net dedicated for emergence call service（APN, Access
Point Name）Establish packet data network（PDN, Packet Data Network）Connect and obtain terminal-pair and answer urgent call
IP address used in business.Core net to different PDN connections used in UE by realizing the knowledge to emergence call service
Not.
The characteristics of this method is to need to establish special IP-CAN connections for emergence call service, and terminal and IMS systems are led to
The IMS sessions that emergence call service is established in urgent business service discovery procedure, and the special APN provided in terminal and core net are provided
Between establish PDN connections.This method need it is special E-CSCF equipment is provided, simultaneously because this method to terminal, core net and
IMS subsystems are made a further demand, and each equipment is required to carry out new configuration and function to realize to emergence call service
Support, this is by the complexity for greatly increasing existing system and safeguards complexity.
2) detected based on deep message（DPI, Deep Packet Inspection）Recognition methods.
The mode of deep message detection refers to that the user face data that core net is used terminal in PDN Gateway carries out agreement
Parsing, protocol information is obtained from user face data message, is analyzed and is identified call business and emergence call service, so as to real
Now to the identification of emergence call service.
The characteristics of this method is that the PDN Gateway in core net needs that the user face data message of terminal is intercepted and assisted
View analysis.Because core net is the core processing equipment in LTE system, it maintains the user of substantial amounts of terminal device and magnanimity
Face data, this method need the whole user face datas for each terminal that core net safeguards to it to parse, and this will be caused
The serious waste of resources of core network, the load and processing complexity of core net are greatly increased, it is serious to reduce data exchange processing energy
Power and service bearer ability.
The content of the invention
This application provides a kind of recognition methods of urgent call in TD-LTE system, do not increase network side equipment and into
This, and on the basis of not influenceing the utilization rate of resources of core network, can make core net to emergence call service fast and effectively
It is identified.
The recognition methods of urgent call, this method include in a kind of TD-LTE system that the embodiment of the present application provides：
A, terminal is initiated to ask for the bearing resource of emergence call service to core net；
B, core net receives the bearing resource request of terminal, and core net is distributed according to local policy for emergence call service
New carrying or the existing carrying of modification, preserves traffic flow template TFT corresponding to the carrying, IP filter PF with promptly exhaling
It is the corresponding relation of business；
C, core net receives the business datum that service server issues terminal, and core net extracts IP letters in business data packet
Breath and/or port information, and in each traffic flow template of terminal, matched with the information preserved in IP filter；For
The IP filter of successful match, should if core net saves the corresponding relation of the IP filter and emergence call service
Business data packet is identified as emergence call service data.
It is preferred that IP address and/or the port for being exclusively used in emergence call service are set in service server；Step A includes：
A1, terminal originating service registration process, service log-on server is in service log-on response signaling by business service
The IP address of emergence call service and/or port notice terminal in device；
A2, terminal preserve the emergence call service IP address obtained and/or port information, and according to above- mentioned information to core
Net initiates to ask for the bearing resource of emergence call service.
It is preferred that terminal described in step A is initiated to include for the bearing resource request of emergence call service to core net：Eventually
The IP filter for holding the traffic flow template asked in bearing resource to include corresponding emergence call service, the first of the IP filter
The 7th of byte is provided for representing the value of emergence call service；By in the IP filter context in the IP filter
Far-end IP address and/or remote port be arranged to the IP address and/or port information of emergency call service device.
As can be seen from the above technical solutions, process or proprietary is established by the dedicated bearing between terminal and core net
Bearing modification process, the dedicated bearing that can be used for emergence call service is established between terminal and core net, and make core
PDN Gateway in net quickly identifies emergence call service by TFT and PF.With traditional emergence call service recognition methods phase
Than the information that the method that the application proposes is effectively utilized in existing TD-LTE standards solves core net to emergence call service
Quick identification, do not increasing network side equipment and cost, on the basis of the utilization rate for not influenceing resources of core network, do not increasing
The extra load of core net and processing complexity, disposal ability will not be exchanged to core network data and service bearer ability causes shadow
Ring, the core net that realizes of simple and fast identifies to emergence call service.
Brief description of the drawings
Fig. 1 is the recognition principle schematic diagram for the emergence call service that the embodiment of the present application provides；
Fig. 2 is the emergence call service recognition methods schematic flow sheet that the embodiment of the present application provides.
Embodiment
The recognition methods of urgent call, its core technology are contemplated that in the TD-LTE system that the application provides：Effectively utilize
The traffic flow template used in TD-LTE standards between terminal and core net（TFT, Traffic Flow Template）And its
In IP filter（PF, Packet Filter）, process or proprietary is established by the dedicated bearing between terminal and core net
Bearing modification process, the dedicated bearing that can be used for emergence call service is established between terminal and core net, and make core
PDN Gateway in net quickly identifies emergence call service by TFT and PF.
To make the technical principle of technical scheme, feature and technique effect clearer, below in conjunction with specific reality
Example is applied technical scheme is described in detail.
In the TD-LTE system that the embodiment of the present application provides in the recognition methods of urgent call, terminal by register command and
Service log-on server carries out service log-on process.Service provider for supporting emergence call service, its service log-on clothes
The IP address of emergence call service in service server and/or port are notified terminal by business device in service log-on response signaling,
The IP address and/or port information should be independently of other business, i.e. service server can pass through the IP address and/or end
Message breath differentiated service is emergence call service.Terminal passes through the bearing resource assigning process or bearing resource between core net
Modification process, to bearing resource and Radio Resource used in core network requests emergence call service.By entrained in signaling
Business stream information, terminal indicates that the bearing resource will be used for emergence call service to core net.
A kind of terminal given below indicates that the bearing resource will be used for urgent call industry by business stream information to core net
Business concrete mode：
The traffic flow template structure and IP filter structure of 3GPP agreement defineds are distinguished as shown in Table 1 and Table 2, wherein wrapping
The 7th of first character section is spare bits in filtration device structure.Identified by being defined as urgency traffic by the 7th of the first byte
（Emergency Flag）, can quickly indicate that the currently requested resource of core net is used by emergence call service, this Shen
Please embodiment provide amended structure it is as shown in table 3.
IP address and/or port information used in the emergence call service that terminal will obtain from business registrar,
As IP filter context（Packet Filter Contents）Far-end IP address and/or remote port parameter, transmit
To core net.
TFT structure table in table 13GPP agreements 24.008
Packet Filter structure tables in table 23GPP agreements 24.008
The amended Packet Filter structure tables of table 3
Core net receives the demand signalling of terminal in bearing resource distribution or bearing resource modification process, passes through and identifies bag
Urgency traffic mark in filter, core net can confirm that terminal is to apply for bearing resource because of emergence call service.Core
Net can be that emergence call service distributes special new bearing resource according to local policy, can also change existing bearing resource
The carrying of emergence call service is provided for terminal.Core net preserves the IP filter in traffic flow template and record traffic flow template
With the corresponding relation of emergence call service.
The recognition principle for the emergence call service that the embodiment of the present application provides is as shown in Figure 1.When core net detects business
When server issues the business data packet of terminal, core net parsing business data packet in IP and/or port information, and successively with
The IP and/or port information that IP filter in each traffic flow template of terminal preserves are matched.For successful match
IP filter, core net confirm as emergence call service according to IP filter and emergence call service corresponding relation, then core net
The business is identified as emergence call service.
Fig. 2 is the emergence call service recognition methods flow that the embodiment of the present application provides, and is comprised the following steps：
Step 201：Terminal originating service registration process, service log-on server is in service log-on response signaling by business
The IP address of emergence call service and/or port notice terminal in server.Service log-on server in the embodiment of the present application
Emergence call service is supported, and IP address used in emergence call service and/or port information should in service server
Independently of other business.
Step 202：Terminal preserves the emergence call service IP address obtained and/or port information, and according to above- mentioned information
Initiate to ask for the bearing resource of emergence call service to core net.
In step 202, terminal initiates bearing resource distribution request or bearing resource modification request, terminal to core net
Need to set the traffic flow template of demand signalling into the IP filter for corresponding to emergence call service.Terminal is needed in IP filter
Urgency traffic mark carry out set, so as to the bearing resource application for notifying core net current be for emergence call service carry out
's.Terminal needs to set IP address and/or the port of emergency call service device in the IP filter context in IP filter
Information is far-end IP address and/or remote port.
Step 203：Core net receives the bearing resource request of terminal, and core net can be urgent call according to local policy
The new carrying of traffic assignments or the existing carrying of modification, preserve the corresponding relation of TFT, PF and emergence call service.
In step 203, core net parses and preserves traffic flow template in selected carrying, is tight for terminal iidentification
The IP filter of anxious call business, core net preserve the corresponding relation of traffic flow template, IP filter and emergence call service.
Step 204：Core net receives the business datum that service server issues terminal, and core net carries in business data packet
IP information and/or port information are taken, and in each traffic flow template of terminal, the information with being preserved in IP filter is done
Match somebody with somebody.For the IP filter of successful match, if core net saves the corresponding relation of the IP filter and emergence call service,
The business data packet is then identified as emergence call service data, so as to realize the identification to emergence call service.
Processing more than, on the basis of network side equipment and cost is not increased, simple and fast realizes core
Identification of the net to emergence call service.This method does not increase the load and processing complexity of core net, will not be to core net yet
Data exchange processing ability and service bearer ability impact.
The foregoing is only the preferred embodiment of the application, not to limit the protection domain of the application, it is all
Within the spirit and principle of technical scheme, any modification, equivalent substitution and improvements done etc., this Shen should be included in
Within the scope of please protecting.
Claims (2)
1. the recognition methods of urgent call in a kind of TD-LTE system, it is characterised in that this method includes：
IP address and/or the port for being exclusively used in emergence call service are set in service server；
A1, terminal originating service registration process, service log-on server is in service log-on response signaling by service server
The IP address of emergence call service and/or port notice terminal；
A2, terminal preserve the emergence call service IP address obtained and/or port information, and are sent out according to above- mentioned information to core net
The bearing resource risen for emergence call service is asked, wherein, terminal includes in the traffic flow template that the bearing resource is asked
The IP filter of corresponding emergence call service, and by the far-end IP address in the IP filter context in the IP filter
And/or remote port is arranged to the IP address and/or port information of emergency call service device；
B, core net receives the bearing resource request of terminal, and core net is that emergence call service distribution is new according to local policy
Existing carrying is carried or changed, preserves traffic flow template TFT corresponding to the carrying, IP filter PF and urgent call industry
The corresponding relation of business；
C, core net receives the business datum that service server issues terminal, and core net extracts IP information in business data packet
And/or port information, and matched in each traffic flow template of terminal with the information preserved in IP filter；For success
The IP filter of matching, if core net saves the corresponding relation of the IP filter and emergence call service, by the business
Identification of data packets is emergence call service data.
2. according to the method for claim 1, it is characterised in that：
The 7th of first byte of the IP filter is provided for representing the value of emergence call service.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310285680.1A CN104284318B (en) | 2013-07-09 | 2013-07-09 | The recognition methods of urgent call in a kind of TD LTE systems |
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| CN201310285680.1A CN104284318B (en) | 2013-07-09 | 2013-07-09 | The recognition methods of urgent call in a kind of TD LTE systems |
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| CN104284318A CN104284318A (en) | 2015-01-14 |
| CN104284318B true CN104284318B (en) | 2017-12-15 |
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| CN107005825B (en) * | 2015-01-30 | 2019-12-17 | 华为技术有限公司 | Automobile emergency call method, vehicle-mounted terminal and system |
| CN107864483B (en) * | 2017-12-01 | 2021-08-10 | Oppo 广东移动通信有限公司 | Method and device for detecting access result and computer storage medium |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1933656A (en) * | 2005-09-16 | 2007-03-21 | 中兴通讯股份有限公司 | Emergency call processing method in wideband code division multiple access system |
| CN101500213A (en) * | 2008-02-03 | 2009-08-05 | 华为技术有限公司 | Method, equipment and system for user equipment urgent access |
| CN101621779A (en) * | 2009-07-30 | 2010-01-06 | 华为技术有限公司 | Method, device and system for urgency call |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1933656A (en) * | 2005-09-16 | 2007-03-21 | 中兴通讯股份有限公司 | Emergency call processing method in wideband code division multiple access system |
| CN101500213A (en) * | 2008-02-03 | 2009-08-05 | 华为技术有限公司 | Method, equipment and system for user equipment urgent access |
| CN101621779A (en) * | 2009-07-30 | 2010-01-06 | 华为技术有限公司 | Method, device and system for urgency call |
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| CN104284318A (en) | 2015-01-14 |
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Granted publication date: 20171215 |