CN104244189B - A kind of paging method in TD-LTE clustering faults reduction communication system - Google Patents
A kind of paging method in TD-LTE clustering faults reduction communication system Download PDFInfo
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Abstract
A kind of paging method in TD LTE clustering faults reduction communication system, the method includes：Establish the user message table for including failure Base Station Identification；After base station receives the call request for carrying the first user identifier, the corresponding user of the first user identifier is determined in coverage area according to failure Base Station Identification in the user message table, sends the paging message for including second user corresponding with the first user identifier mark；User in paging message second user mark determine itself be base station calling object, initiate the connection the process of foundation to base station or reception group exhale and establishes message.After the embodiment of the present invention, when core-network side breaks down, base station can also normally be paged.
Description
Technical field
This application involves fields of communication technology, are weakened in communication system more particularly, to a kind of TD-LTE clustering faults
Paging method.
Background technology
With the rapid development of mobile Internet and the Large scale construction in global radio city, sector application is to cluster communication
Demand it is more and more diversified, digital narrowband group system based on voice is in the branch of data transmission capabilities and multimedia service
Industry development demand has been lagged far behind in terms of holding ability.Data broadband, business diversification, terminal multimode, system IPization are
The developing direction of the current cluster communication technology, cluster communication are just stepping into the new generation broadband multimedia cluster system epoch.
Broadband cluster system based on TD-LTE is using fourth generation mobile communication technology TD-LTE as core technology, by TD-
The high-speed of LTE, big bandwidth in Digital Trunking Technologies resource-sharing, fast call establishment, command scheduling the features such as carry out
The new generation broadband digital cluster system for integrating voice, data, video of fusion.
Based on the broadband cluster system of TD-LTE based on LTE system framework, system is divided into terminal, access net, core
Net, six part of subscribed database, dispatching control center and operation maintenance center.Terminal（UE）It is divided into command scheduling Terminal Type sum number
According to transmission two class of Terminal Type, including handheld terminal, fixed terminal, car-mounted terminal, desktop terminal CPE, card of surfing Internet or wireless monitor
The equipment such as camera terminal.Net is accessed by base station（eNodeB）Equipment forms.Core net（EPC）It is responsible for the network side mobility of UE
Management, the unified of S1 link managements, business datum exchange control and transmission, including mobility management entity（MME）And safety net
It closes（xGW）.Subscribed database（RDS）Realize cluster user information, the management of cluster group user information and inquiry, subscription authentication,
The functions such as key generation, preservation and management.Dispatching control center（MDC）The coordinated scheduling and calling for being responsible for entire group system are controlled
System, main network elements include exchanging control platform（SCC）With scheduling application platform.Operation maintenance center（eOMC）It is responsible for setting system
The Operation and Maintenance functions such as configuration management, fault management, performance management to managed devices are realized in standby management and maintenance.
Since trunked communication system often relates to human life and public property safety, need to ensure under extreme condition as possible
Communication, therefore trunked communication system reliability and survivability requirement it is very high.When system encounters sudden disaster（Such as earthquake, sea
It makes a whistling sound, air strike）Or during artificial destruction, link physical interruption may occur between each network element device of system or part network element device is ruined
Bad, to ensure that the user under above-mentioned abnormal conditions communicates, system needs special survivability scheme.Fail soft is a kind of
Important survivability scheme, main purpose are after solution base station loses network controls, to continue in serving BS coverage area
Terminal user.
Under normal mode, the cluster user information of system is stored in subscribed database（RDS）In, when terminal needs to adhere to net
When network or progress communication service, industry is authenticated and is performed by the user information of core net and exchange control platform in RDS
Business operation, at this point, not having cluster user information on base station.And when core-network side breaks down, base station enters fail soft mode
Afterwards, base station does not have the user information of affiliated terminal, then can not normally be paged under fail soft mode.
Invention content
The embodiment of the present invention proposes the paging method in a kind of TD-LTE clustering faults reduction communication system, in core-network side
When breaking down, base station can also normally be paged.
The technical solution of the embodiment of the present invention is as follows：
A kind of paging method in TD-LTE clustering faults reduction communication system, the method includes：
Establish the user message table for including failure Base Station Identification；
After base station receives the call request for carrying the first user identifier, marked in the user message table according to failure base station
Know and determine that the corresponding user of the first user identifier in coverage area, sends and includes second user corresponding with the first user identifier
The paging message of mark；
User in paging message second user mark determine itself be base station calling object, to base station initiate connect
It connects the process of foundation or reception group exhales and establishes message.
The user message table includes default configuration information and differential configuration information；
The differential configuration information includes international mobile subscriber identity IMSI, the telephone number UDN of user, group number list
GroupNumber list, IP address Server IP, User IP port numbers Server Port and include failure base station mark
The unique interim subscriber identity M-GUTI of fail soft of knowledge.
The user message table for including failure Base Station Identification of establishing includes：
After user UE enters fail soft mode, UE reports IMSI to base station eNB；
ENB using the IMSI as index, for UE distribute IMSI distribution it is corresponding comprising failure Base Station Identification M-GUTI,
Then Server IP and Server Port distribute the IMSI to corresponding M-GUTI, Server IP and Server Port
User is sent to by NAS message；
User carries IMSI, UDN and GroupNumber list in SIP layer service log-on messages and is sent to eNB；
ENB is by the IMSI by the M-GUTI, Server IP, Server Port and UDN, GroupNumber
List is associated, and establishes the user message table for including failure Base Station Identification.
The UE enters fail soft mode and includes：The base station of UE access switchs to fault mode by normal work module.
The UE enters fail soft mode and includes：UE is from the base station movement of normal work to the base station of fault mode.
The user UE enters fail soft mode and includes：UE is from the base station movement of fault mode to another fault mode
Base station.
The UE reports IMSI to include to eNB：After UE removes original M-GUTI, IMSI is reported during eNB is adhered to.
The UE reports IMSI to include to eNB：
After UE cannot remove original M-GUTI, M-GUTI is reported during eNB is adhered to；
When the mark of failure Base Station Identification and eNB in the M-GUTI differs；
UE reports IMSI.
The UE reports IMSI to include to eNB：
UE cannot remove original GUTI, and M-GUTI is reported during eNB is adhered to；
When failure Base Station Identification in the M-GUTI is identical with the mark of eNB；
ENB obtains corresponding IMSI according to the M-GUTI.
The method further comprises after the user message table comprising failure Base Station Identification is established：
When detecting the registration of UE aperiodicitys or TAU, then the information of the UE is deleted in the user message table.
First user identifier is the telephone number UDN of user, and the second user mark is in fail soft base station
Temporary Mobile Subscriber Identity M-S-TMSI
The user in paging message second user mark determine itself be base station calling object, to base station send out
Connection is played to establish process and include：It carries M-S-TMSI and establishes process to base station initiation RRC connections.
First user identifier is group number, and the second user mark is group number and group radio network temporary identifier G-
RNTI；
The user in paging message second user mark determine itself be base station calling object, the receiving
Group, which is exhaled, to be established message and includes：
User determines it itself is the paging object during group of base stations is exhaled, then foundation is exhaled to disappear by G-RNTI reception groups according to group number
Breath, establishes group and exhales, reception group exhales data.
It can be seen that the use for initially setting up include failure Base Station Identification in embodiments of the present invention from above-mentioned technical proposal
Family information table；After base station receives the call request for carrying the first user identifier, according to failure base station in the user message table
Mark determines the corresponding user of the first user identifier in coverage area, sends and includes the corresponding with the first user identifier second use
The paging message of family mark；User in paging message second user mark determine itself be base station calling object, to
Base station initiates the connection the process of foundation or receives group and exhale to establish message.It breaks down in core-network side, base station enters fail soft mould
After formula, base station can normally be paged according to user message table with user.
Description of the drawings
Fig. 1 is the paging method flow diagram in TD-LTE clustering faults reduction communication system；
Fig. 2 is M-GUTI structure diagrams；
Fig. 3 is GUTI structure diagrams；
Fig. 4 is user message table Establishing process schematic diagram.
Specific embodiment
For the object, technical solutions and advantages of the present invention is made to express to be more clearly understood, below in conjunction with the accompanying drawings and specifically
The present invention is further described in more detail for embodiment.
In embodiments of the present invention, the user message table for including failure Base Station Identification is established, UE carries out repeating attachment and note
Volume.After base station receives the call request for carrying the first user identifier, the is determined according to failure Base Station Identification in user message table
The corresponding user of one user identifier sends in coverage area and includes seeking for second user corresponding with the first user identifier mark
Exhale message；User in paging message second user mark determine itself be base station calling object, to base station initiate connect
It connects the process of foundation or reception group exhales and establishes message.It breaks down in core-network side, after base station enters fail soft mode, base station can
Normally to be paged with user according to user message table.
In addition, for terminal, it can make UE that attaching process and message be kept not to change when fail soft and non-faulting weaken
Become, only change the SIP registration information of UE, simplify the processing of terminal, maximum possible reduces influence of the fail soft to UE
And change.
M-GUTI is redistributed in base station to terminal, wherein being identified with failure eNB marks instead of MME.So as to effective
Terminal switch machine and the mobile repeated registration brought and new and old user is avoided to cannot be distinguished from problem, it is ensured that when terminal is adhered to again
IMSI is reported, effectively improve foundation and safeguards the efficiency of user message table.
It is the paging method flow diagram in TD-LTE clustering faults reduction communication system referring to attached drawing 1, specifically includes
Following steps：
101st, the user message table for including failure Base Station Identification is established.
UE enters fail soft mode and includes being suitable for following three kinds of situations, i.e. the base station that UE is received is by normal mode of operation
Switch to fault mode；UE is from the base station movement of normal work to the base station of fault mode；And UE is moved from the base station of fault mode
Move the base station of another fault mode.
Under fail soft operating mode, because base station loses the contact and control of network side, so as to be lost net
User information necessary to the call business of network side for base station is made to remain to complete basic call business, needs base station to establish and tie up
The user message table in a base station is protected, to record necessary user information.
The content of user message table includes two category informations, default configuration information and differential configuration information.Default configuration information
It is that all terminals are identical, the information prepared before fail soft.Differential configuration information is that each terminal is discrepant, need to be
The information that terminal reports after fail soft occurs or base station is distributed.
Default configuration information mainly includes the contents such as terminal traffic log-on message, service attribute, service parameter, these information
Using default service admissible under the conditions of fail soft as default configuration, default information is set by webmaster, before and after fail soft
Remain unchanged.
Differential configuration information includes following five：International mobile subscriber identity（IMSI）, user telephone number
（UDN）, group number list（GroupNumber List）, IP address/port numbers（ServerIP/ServerPort）, failure
Weaken unique interim subscriber identity M-GUTI）.Wherein：
1）IMSI is the user identifier of UE.
2）UDN is UE telephone numbers；
3）GroupNumber List are group information lists, contain all group numbers belonging to UE.
4）ServerIP is UE IP address, and ServerPort is UE IP port numbers, for address of UE callings when called
Information.
5）M-GUTI is failure GUTI, and the failure S-TMSI for paging UE is used under fault mode wherein containing（M-S-
TMSI）With failure Base Station Identification eNB-ID.Concrete structure participates in attached drawing 2.
In attached drawing 2, Mobile Country Code MCC（MCC）It is 3 bit digitals, country code is represented, if China is 460；Mobile Network Code
（MNC）Represent carrier network, two or three-digit number；ENB-ID is failure Base Station Identification, length 20bit, for unique mark
One base station；Mobile management entity（MME）Temporary Mobile Subscriber Identity（M-TMSI）For the UE in unique mark some MME,
Length 32bit.
It is the global unique temporary identity in LTE standard referring to attached drawing 3（GUTI）Structure diagram, the difference with attached drawing 2
Part is the eNB-ID and 4bit0 of M-GUTI 20bit（Common 24bit）It is identified instead of the mobile management entity in GUTI
（MME Identity）.It is consistent for paging M-S-TMSI and the S-TMSI length of UE, the rear 4bit of eNB-ID is contained,
The M-TMSI of 4bit0 and 32bit.
IMSI, UDN and GroupNumber List are stored in Global Subscriber identification（USIM）Information in card, is existed by UE
Base station is reported in attachment registration process；M-GUTI, ServerIP and ServerPort are IMSI points that base station is reported according to UE
The information of UE is transmitted under matching.
The detailed process of user message table is established referring to step 401-414.
102nd, it after base station receives the call request for carrying the first user identifier, is marked in user message table according to failure base station
Know and determine that the corresponding user of the first user identifier in coverage area, sends and includes second user corresponding with the first user identifier
The paging message of mark.
103rd, user in paging message second user mark determine itself be base station calling object, to base station send out
It plays connection and establishes process or reception group exhales and establishes message.
Calling between base station and user includes individual calling and exhales two kinds of situations with group.
During individual calling, the first user identifier is UDN, and second user mark is M-S-TMSI.
（A）After base station receives the called call request containing UDN, called terminal is judged according to the user message table of foundation
Whether in its coverage area, if, base station obtains the corresponding M-GUTI of called terminal according to the UDN of called terminal, and then
M-S-TMSI is obtained, and the message containing called terminal M-S-TMSI is sent by paging channel；Otherwise, it does not deal with.
（B）When terminal receives the paging message, judge that base station is paging object by the M-S-TMSI of itself, if so,
Then RRC connections are initiated to base station and establish process, established in RRC connections and M-S-TMSI is carried in request message, and built in RRC connections
It is vertical to complete to carry NAS message Service Request message in message；Otherwise, it does not deal with.
（C）Base station is received after RRC connections establish request message, and base station judges called according to the M-S-TMSI carried in message
Terminal also in its coverage area, is then caller and called distributing radio resource respectively, carries out call proceeding.When call proceeding is complete
Cheng Hou, base station send the successful notification message of call proceeding to caller and called terminal respectively.In base station during isolated operation, base station
The service of point to point call still can be provided for the user in its coverage area.
When group is exhaled, the first user identifier is GroupNumber, and the second user mark is GroupNumber and G-
RNTI。
（a）After base station, which receives the group containing GroupNumber, to be called for asking, judged according to the user message table of foundation called
Whether group is with the presence of in other users its coverage areas, if it does, base station is calling subscribe's distributing radio resource, and in base station
Interior cell carries out group and exhales paging（It carries the GroupNumber of called group and the G-RNTI of foundation is exhaled in interim distribution for group）；It is no
Then, it does not deal with.
（b）After user terminal receives the clustering paging message in called group, by judging GroupNumber whether at itself
In the group number list of storage, determine whether base station pages group where oneself, if so, and passing through the G-RNTI reception groups issued and exhaling
Message is established, completion group exhales the process of foundation；Otherwise, it does not deal with.In base station during isolated operation, base station still can be covered for it
In the range of the service exhaled of user's offer group.
4 the process for establishing user message table is described in detail below in conjunction with the accompanying drawings.
IMSI, UDN and GroupNumber List information are prestored in the usim card of UE first.
To ensure that UE can report IMSI information, done in UE sides and eNodeB sides arranged below.
UE sides are set：After UE enters fail soft mode, it is desirable that UE removes original GUTI first, in subsequent attachment
During eNodeB, IMSI is only reported；
ENodeB sides are set：If certain particular UE terminals can not achieve GUTI removings, pass through M-GUTI（It is identified with eNB
It is identified instead of MME）, eNodeB can assert the validity of GUTI that UE reports according to eNB-ID（If containing this base station in GUTI
ENB-ID, then effectively, on the contrary it is invalid）, so that it is guaranteed that the user UE that look for novelty reports IMSI.
After eNodeB obtains IMSI, using IMSI for index, be UE distribution corresponding M-GUTI, ServerIP and
ServerPort, and pass through NAS message and be transmitted to UE.
UE carries IMSI, UDN and GroupNumber List in SIP layer service log-on messages and is transmitted to eNodeB again.
ENodeB is associated together M-GUTI, ServerIP, ServerPort and UDN, GroupNumber List by IMSI, complete
Into the foundation of UE log-on messages.
UE carries IMSI, UDN and GroupNumber List and is uploaded to eNodeB in fail soft log-on message, and UDN
In non-faulting reduction UE registrations and do not include with GroupNumber List information, only by core in response message is registered
Net side feeds back to UE.
When fail soft and non-faulting weaken, UE keeps attaching process and message not to change, and only changes the SIP registration of UE
Information, maximum possible reduce influence and change of the fail soft to UE.Detailed process is as follows：
401st, UE initiates RRC connections and establishes process；
402nd, UE sends RRC Connection Setup Complete message, subsidiary NAS message Attach to eNodeB
Request, request attachment.NAS message includes GUTI or IMSI.
If that UE is reported is IMSI, performed since 406 authentications and encryption；If that UE is reported is GUTI, from
403 start to perform.
If that the 403, UE is reported is GUTI, eNodeB checks that the GUTI whether there is in existing user message table, such as
Fruit exists, and it is not the eNodeB of registration attachment for the first time to represent the UE, then is performed since 406 authentications and encryption；If user believes
It ceases and the GUTI is not present in table, then it is assumed that the GUTI reported is invalid, performs 404, and IMSI is reported to UE requests.
404th, eNodeB IMSI in order to obtain send Identity Request to UE.
405th, UE sends Identity Response message to eNodeB, and message carries IMSI returning response message.
406th, authentication security certification and ciphering process are carried out.The safety certification and ciphering process of fail soft UE is existing
Technology.
407th, eNodeB checks that the IMSI of the UE whether there is in UE user message tables, is built if it is present performing 408
Vertical initial context；If it does not, eNodeB increases the IMSI information of the UE in user message table, and M- is distributed for UE
GUTI（And ServerIP/ServerPort, index correspondence is established with IMSI.
408th, eNodeB establishes initial context for UE.
409th, eNodeB establishes default bearer for UE, and passes through RRC Connection Reconfigration and sent out to UE
Attach Accept message is sent, if eNodeB is assigned with new M-GUTI and ServerIP/ServerPort to UE, then
Distributed information is included in message.
410th, UE sends RRC Connection Reconfigration Complete message to eNodeB.
411st, UE sends Attach Complete message by UL Information Transfor to eNodeB.
412nd, UE is after NAS layers of attachment are completed, and before carrying out SIP layers of registration, needs to initiate bearing resource modification to eNodeB
SIP signaling dedicated bearers are established in request, request；Then, eNodeB initiates SIP dedicated bearer Establishing process, and it is special to establish SIP for UE
With carrying；
413rd, UE is by sending SIP（REGISTER）Message is to eNodeB, to eNodeB application for registration group services.
IMSI, UDN and GroupNumber List information of UE is included in REGISTER message.ENodeB is noted in UE information
The UE is retrieved according to IMSI in volume table, UDN and GroupNumber List information is increased or is modified in UE log-on messages；
414th, eNodeB sends SIP（200(OK)）To UE, confirmation is succeeded in registration.
The information of user message table cannot unlimitedly increase, when have terminal leave base station overlay area or shutdown when, need from
The information of the UE is deleted in user message table.Meanwhile capacity limit is carried out to the information of user message table, more than capacity requirement,
Then no longer UE is allowed to adhere to.
The deletion modification of user message table information is by periodic registration, tracing section updating（TAU）And attachment removal
（Detach）What process was realized, it is specific as follows：
1）Certain UE long-times in user message table are detected as failure eNodeB（Time can configure）There is no generating period
Property registration or TAU after, it is believed that the UE has left base station overlay area, and the log-on message of the UE is then deleted in user message table.
TAU, the process are initiated by UE, for notifying network.UE present positions are changed, and are moved to by a tracking area
Other tracking areas.
2）When the reasons such as removing from UE because of UE shutdown or USIM so that during UE execution Detach processes, eNodeB is known
The GUTI or IMSI information of UE in user message table retrieves and deletes the information of the UE.Detach processes are not intended to for UE
The process that network or network are not intended to UE to be triggered when accessing again is accessed again.UE and network side can initiate the process.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention.It is all
Within the spirit and principles in the present invention, any modification, equivalent replacement, improvement and so on should be included in the protection of the present invention
Within the scope of.
Claims (11)
1. a kind of paging method in TD-LTE clustering faults reduction communication system, which is characterized in that the method includes：
Establish the user message table for including failure Base Station Identification；
It is true according to failure Base Station Identification in the user message table after base station receives the call request for carrying the first user identifier
The fixed corresponding user of first user identifier sends in coverage area and includes second user corresponding with the first user identifier mark
Paging message；
User in paging message second user mark determine itself be base station calling object, initiate the connection and build to base station
Vertical process or reception group exhale and establish message；
Wherein, the user message table for including failure Base Station Identification of establishing includes：
After user UE enters fail soft mode, UE reports international mobile subscriber identity IMSI to base station eNB；
ENB distributes the IMSI using the IMSI as index, for UE and distributes the corresponding fail soft for including failure Base Station Identification
Unique temporary identity M-GUTI, IP address Server IP and User IP port numbers Server Port, then by described in
IMSI distributes corresponding M-GUTI, Server IP and Server Port and is sent to user by non access stratum NAS message；
User carries the IMSI, the telephone number UDN of user and group number list in conversation initial SIP layer service log-on messages
GroupNumber list are sent to eNB；
ENB is by the IMSI by the M-GUTI, Server IP, Server Port and UDN, GroupNumber list phases
The user message table for including failure Base Station Identification is established in association.
2. the paging method in TD-LTE clustering faults reduction communication system according to claim 1, which is characterized in that described
User message table includes default configuration information and differential configuration information；
The IMSI, UDN, GroupNumber list, Server IP, Server Port and the M- for including failure Base Station Identification
GUTI。
3. the paging method in TD-LTE clustering faults reduction communication system according to claim 1, which is characterized in that described
UE enters fail soft mode and includes：The base station of UE access switchs to fault mode by normal work module.
4. the paging method in TD-LTE clustering faults reduction communication system according to claim 1, which is characterized in that described
UE enters fail soft mode and includes：UE is from the base station movement of normal work to the base station of fault mode.
5. the paging method in TD-LTE clustering faults reduction communication system according to claim 1, which is characterized in that described
User UE enters fail soft mode and includes：UE is from the base station movement of fault mode to the base station of another fault mode.
6. the paging method in TD-LTE clustering faults reduction communication system according to claim 1, which is characterized in that described
UE reports IMSI to include to eNB：After UE removes original M-GUTI, IMSI is reported during eNB is adhered to.
7. the paging method in TD-LTE clustering faults reduction communication system according to claim 1, which is characterized in that described
UE reports IMSI to include to eNB：
After UE cannot remove original M-GUTI, M-GUTI is reported during eNB is adhered to；
When the mark of failure Base Station Identification and eNB in the M-GUTI differs；
UE reports IMSI.
8. the paging method in TD-LTE clustering faults reduction communication system according to claim 1, which is characterized in that described
UE reports IMSI to include to eNB：
UE cannot remove original GUTI, and M-GUTI is reported during eNB is adhered to；
When failure Base Station Identification in the M-GUTI is identical with the mark of eNB；
ENB obtains corresponding IMSI according to the M-GUTI.
9. the paging method in TD-LTE clustering faults reduction communication system according to claim 1, which is characterized in that described
Method further comprises after the user message table comprising failure Base Station Identification is established：
When detect UE aperiodicitys registration or without tracing section updating TAU, then delete the UE's in the user message table
Information.
10. the paging method in TD-LTE clustering faults reduction communication system according to claim 1, which is characterized in that institute
The telephone number UDN that the first user identifier is user is stated, the second user mark is temporarily mobile in fail soft base station uses
Family identifies M-S-TMSI
The user in paging message second user mark determine itself be base station calling object, to base station initiate connect
The process of foundation is connect to include：It carries M-S-TMSI and establishes process to base station initiation RRC connections.
11. the paging method in TD-LTE clustering faults reduction communication system according to claim 1, which is characterized in that institute
It is group number to state the first user identifier, and the second user mark is group number and group radio network temporary identifier G-RNTI；
Second user mark of the user in paging message determine itself be base station calling object, the reception group exhales
Message is established to include：
User determines it itself is the paging object during group of base stations is exhaled according to group number, then is exhaled by G-RNTI reception groups and establish message,
It establishes group to exhale, reception group exhales data.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310236709.7A CN104244189B (en) | 2013-06-14 | 2013-06-14 | A kind of paging method in TD-LTE clustering faults reduction communication system |
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| CN201310236709.7A CN104244189B (en) | 2013-06-14 | 2013-06-14 | A kind of paging method in TD-LTE clustering faults reduction communication system |
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| CN104244189A CN104244189A (en) | 2014-12-24 |
| CN104244189B true CN104244189B (en) | 2018-06-22 |
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| CN105792180B (en) * | 2014-12-26 | 2019-08-09 | 中国电信股份有限公司 | Acquisition methods and system, the communication equipment of GUTI information |
| KR101903560B1 (en) * | 2015-01-26 | 2018-10-04 | 후지쯔 가부시끼가이샤 | Wireless communication system, base station and terminal |
| CN107396339A (en) * | 2016-05-16 | 2017-11-24 | 大唐移动通信设备有限公司 | A kind of international mobile subscriber identity IMSI acquisition methods and system |
| CN107635285A (en) * | 2016-07-12 | 2018-01-26 | 北京信威通信技术股份有限公司 | A kind of method and device for establishing call |
| CN107690156A (en) * | 2016-08-06 | 2018-02-13 | 北京信威通信技术股份有限公司 | A kind of method of handling failure reduction pattern and base station |
| CN106454758A (en) * | 2016-12-05 | 2017-02-22 | 山东闻远通信技术有限公司 | Group call establishment method and system in distributed fail soft trunking communication |
| CN109413764A (en) * | 2017-08-18 | 2019-03-01 | 普天信息技术有限公司 | A kind of fail-soft processing method and equipment |
| CN110213785B (en) * | 2018-02-28 | 2022-04-15 | 成都鼎桥通信技术有限公司 | Fault weakening processing method, network equipment, terminal equipment and system |
| CN110958649B (en) * | 2018-09-26 | 2021-12-21 | 成都鼎桥通信技术有限公司 | Reselection method, terminal and storage medium |
| WO2020124576A1 (en) * | 2018-12-21 | 2020-06-25 | 海能达通信股份有限公司 | Notification method for system information, base station device, and computer storage device |
| CN112423331B (en) * | 2020-11-03 | 2023-05-30 | 中国联合网络通信集团有限公司 | Fault diagnosis method and device |
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| US5457809A (en) * | 1993-04-20 | 1995-10-10 | Nec Corporation | Group communications method between mobile stations |
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