CN104935452A - Digital cluster system realization method based on POOL networking - Google Patents
Digital cluster system realization method based on POOL networking Download PDFInfo
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Abstract
The invention discloses a digital cluster system realization method based on POOL networking. The method comprises the following steps that POOL networking is performed in a digital cluster system, and a plurality of core networks cover a same area so as to carry out disaster recovery; a dispatcher initiates group establishment to each core network where a user of a to-be-established group is located, and each core network notifies a corresponding base station to establish group bearing according to a position of a group user; the base station select one core network from each core network and the core network is served as a copy source of group data, a downlink data path is established between the selected core network and the base station, positional information included in the all the received notifications are extracted and a union set is performed on the positional information, and group downlink sharing bearing including a position area corresponding to the union set is established at an air interface; the downlink data path and the group downlink sharing bearing are used to carry out downlink sharing data transmission of the group. By using the method, a disaster recovery characteristic of the plurality of core networks covering the same area is realized; S1 interface and air interface resource wastes are avoided; simultaneously a purpose of capacity expanding can be reached and switching of the core networks is reduced.
Description
Technical field
The application relates to trunking communicating technology, particularly a kind of digital cluster system implementation method based on POOL networking.
Background technology
In public network LTE, in order to support the networking between multiple core net and the disaster tolerance when core net breaks down, propose the concept of MME POOL, the S1Flex technology of employing.Specifically in public network, apply the network configuration of MME POOL as shown in Figure 1, multiple core net works simultaneously, for identical base station and the area of coverage provide business.
Under normal circumstances: the core net of eNB to the wireless user place of new access is selected, and the load-bearing capacity issued according to core net, is distributed to user in different core net according to different ratios.Multiple core net, can provide the professional ability of more large gauge.
Under abnormal conditions: when certain core net goes wrong, its corresponding wireless user, when the business of initiation, can utilize remaining core net to provide service.
At present, the concept of above-mentioned MME POOL has only carried out specific implementation in public network LTE.But only have point-to-point service in public network LTE, and in digital cluster system, PTT cluster is carried as the mode that descending group user is shared, certain group user can exist in multiple core net simultaneously.And the reliability of group system also has higher requirement, but in group system, do not carry out the solution of POOL networking at present.
Summary of the invention
This application provides a kind of digital cluster system implementation method based on POOL networking, the group communication that multiple core net covers same area can be realized in group system.
For achieving the above object, the application adopts following technical scheme:
Based on a digital cluster system implementation method for POOL networking, comprising:
In described digital cluster system, carry out POOL networking, multiple core net covers identical region, for carrying out disaster tolerance;
Dispatcher initiates group's foundation to each core net at the user place of group to be set up, and each core net described, according to the position of described group user, notifies that group's carrying is set up in corresponding base station; The positional information setting up group's carrying is comprised in described notice;
Receive arbitrary base station of described notice, the positional information that all notices received comprise is got union, eat dishes without rice or wine to set up the shared carrying of cluster downlink of eating dishes without rice or wine comprising described union correspondence position region;
A copy source as group data is selected in described arbitrary base station from each core net sending described notice to this base station, selection result is fed back to each core net sending notice to described arbitrary base station, and downlink data path is set up between the core net selected and described arbitrary base station, utilize described downlink data path and described cluster downlink of eating dishes without rice or wine to share and carry the downlink shared data transmission carrying out described group.
Preferably, described arbitrary base station selects a copy source as group data to comprise from each core net sending described notice to this base station: initiate group's carrying foundation and the core net having interface-free resources to be successfully established, as the copy source of group data for described arbitrary base station selected first.
Preferably, the method comprises further: according to the positional information comprised in described notice, preserves and send each core net of notice and the incidence relation of lane place to described arbitrary base station in described arbitrary base station;
When the core net as group data copy source does not need to provide data for the user of described group in its assigned address district, inside first, keep described downlink data path, by base station arbitrary described in signaling delete the first assigned address district and as group data copy source core net between incidence relation;
Sending in each core net of described notice to described arbitrary base station, if arbitrary non-selected core net do not need for the user of described group in its assigned address district, inside second data are provided time, delete the incidence relation described in the second specified location area between non-selected core net by base station arbitrary described in signaling.
Preferably, the method comprises further: when the incidence relation of any position district and all core net is all deleted in described arbitrary base station, delete the interface-free resources that described any position district is corresponding;
When the interface-free resources of all lane place of described group is all deleted, described arbitrary base station notice sends the deletion that each core net notified carries out the carrying of described group to this base station, the core net as group data copy source deletes the data source of described group.
Preferably, the method comprises further: after the core net as group data copy source finds that group's closing flow path is triggered, notify that the deletion of group's resource is carried out in all base stations relevant to described group.
Preferably, the method comprises further: when the core net as group data copy source changed by needs, described arbitrary base station is gravity treatment one from non-selected core net, and sends data source handover request to the core net of this gravity treatment; The core net of described gravity treatment configures the data source of described group, between the core net and described arbitrary base station of described gravity treatment, set up downlink data path, and to described arbitrary base station feedback response message; After described arbitrary base station receives response message, the core net switching described gravity treatment is group data copy source, and the downlink data path utilizing gravity treatment core net to set up and described cluster downlink share the downlink shared data transmission that described group is carried out in carrying.
Preferably, determine to need to change and as the mode of the core net of group data copy source be: when described arbitrary base station determine self and as group data copy source core net between connection there is exception time, determine the core net of needs replacing as group data copy source; Or, when the data source that described arbitrary base station receives the transmission of the described core net as group data copy source prepares handover request, determine to need to change the core net as group data copy source.
Preferably, when the data source that described arbitrary base station receives the transmission of the described core net as group data copy source prepares handover request, after the core net switching described gravity treatment in described arbitrary base station is group data copy source, the core network data source switching that notice sends data source preparation handover request completes, and this core net carries out the deletion of described group data resource.
Preferably, the method comprises further: for the multiple core net covering same area, carry out the data backup of cluster user; The data of backup comprise: the attachment state of user and the current position of user;
When the arbitrary core net in described multiple core net occurs abnormal, second core net of preserving its Backup Data provides the Backup Data of abnormal core net, for carrying out corresponding troubleshooting.
Preferably, the current position of described user comprises the set in present position-region and close position district.
Preferably, the data of described backup comprise further: the current group of user and/or the signing group of user.
Preferably, when carrying out troubleshooting according to Backup Data, when not comprising the current group of user in described Backup Data, determine described user at it in all groups of contracting; When described Backup Data comprises the current group of user, determine that user is in its current group.
Preferably, the Backup Data of the multiple core net covering same area is kept in same core net; Or, between the multiple core net covering same area, mutually carry out the preservation of Backup Data.
Preferably, the priority that described backup is initiated is the priority lower than setting; When the opposite equip. overload backed up or fault, reduce the frequency of backup.
Preferably, if when the user property in the initial data of arbitrary core net and Backup Data is inconsistent, the user property in Backup Data is covered according to the user property of initial data when backing up next time; If when the number of users in the initial data of arbitrary core net and Backup Data is inconsistent, the backup of full dose user data is all sent to described second core net by described arbitrary core net, for upgrading the Backup Data that it is preserved.
Preferably, the method comprises further: after dispatcher is determined between self and described arbitrary core net Tx interface and disconnected, dispatcher sends to described second core net by sending to the request message of described arbitrary core net, and carries the failure identification of described arbitrary core net;
Determine that described arbitrary core net occurs that abnormal mode comprises: when described second core net finds that the S10 between self and described arbitrary core net disconnects and receives from described dispatcher the request message comprising described failure identification, determine that described arbitrary core net occurs abnormal.
Preferably, when described arbitrary core net occurs abnormal, the user in described arbitrary core net enters ECM-IDLE state, when this user initiatively initiates business, is attached to covers in other core net of same area with described arbitrary core net according to S1-Flex characteristic; Described second core net, after waiting for the UE TAU time-out in described arbitrary core net, determines described UE attachment removal.
As seen from the above technical solution, in the application, in digital cluster system, carry out POOL networking, multiple core net covers identical region, for carrying out disaster tolerance; Dispatcher initiates group's foundation to each core net at the user place of group to be set up, and each core net is according to the position of group user, and notice corresponding base station sets up group's carrying; The positional information setting up group's carrying is comprised in this notice; Receive the base station of notice, a copy source as group data is selected from sending each core net of notice to this base station, downlink data path is set up between the core net selected and base station, and the positional information that all notices received comprise is got union, eating dishes without rice or wine to set up the shared carrying of the cluster downlink comprising this union correspondence position region; Utilize downlink data path and cluster downlink to share and carry the downlink shared data transmission carrying out group.By the way, in the multiple core net covering same base station, select one set up downlink data path with this base station, and set up the descending shared carrying of eating dishes without rice or wine taking into account the status requirement of each core net, for carrying out cluster downlink transfer of data.Like this, both achieved the disaster tolerance that multiple core net covers same area, avoided again the waste of S1 interface and interface-free resources.
Accompanying drawing explanation
Fig. 1 is the schematic network structure applying MME POOL in public network;
Fig. 2 is the schematic network structure of PTT POOL in digital cluster system;
The schematic diagram of information interaction when Fig. 3 is the trunking communication of PTT POOL networking;
Fig. 4 is the method flow schematic diagram that PTT POOL networking realizes trunking communication;
Fig. 5 is the schematic diagram of group's bearing modification;
Fig. 6 is the schematic diagram of group data copy source gravity treatment;
Fig. 7 is the structural representation of chain type backup;
Fig. 8 be Backup Data inconsistent time the schematic flow sheet of alignment of data.
Embodiment
In order to make the object of the application, technological means and advantage clearly understand, below in conjunction with accompanying drawing, the application is described in further details.
The application carries out POOL networking in digital cluster system, and multiple core net covers identical region, for providing disaster tolerance demand.Specifically in digital cluster system, carry out the schematic network structure of POOL networking as shown in Figure 2, wherein, eCNS1 and eCNS2 covers the region of eNB1 and eNB2 simultaneously, the region of eNB1 and eNB2 is made to form disaster tolerance district 1, when eCNS1 or eCNS2 breaks down, can also be covered by eCNS2 or eCNS1 feasible region; ECNS3, eCNS4 and eCNS5 cover the region of eNB3, eNB4 and eNB5 simultaneously, the region of eNB3, eNB4 and eNB5 is made to form disaster tolerance district 2, when one or two core net in eCNS3, eCNS4 and eCNS5 breaks down, can also be covered by remaining core net feasible region.
Based on the digital cluster system of above-mentioned PTT POOL networking, adopt the cluster communication method in the application can realize setting up group in the group system of PTT POOL networking and to go forward side by side the process of Serial Communication.Wherein, as shown in Figure 3, the method flow realizing trunking communication as shown in Figure 4, is introduced the concrete grammar of trunking communication below in conjunction with Fig. 3 and Fig. 4 information interaction schematic diagram when carrying out trunking communication.Wherein, be described to set up group 1 in the base station eNB 1 in disaster tolerance district 1.Particularly, the method comprises:
Step 401, dispatcher initiates group's foundation to each core net at the user place of group to be set up.
In the application, multiple core net works simultaneously, and user distributes by the mode of load sharing.Specifically can adopt public network scheme (see 3GPP23236).In the present embodiment, with in disaster tolerance district 1, eCNS1 and eCNS2 works simultaneously, and UE1 is registered in eCNS1, and can roam in eCNS1, eCNS2 and eCNS3; UE2 is registered in eCNS2, and can roam in eCNS1, eCNS2 and eCNS3.
When group 1 sets up, dispatcher, according to each core net (such as eCNS1,2) at group 1 user place, is initiated group to each core net and is set up.
Step 402, receives each core net that group sets up, and according to the position of group user, notifies that group's carrying is set up in corresponding base station, and comprises the positional information setting up group's carrying in the notification.
Dispatcher sends when group sets up to core net and comprises group information, such as group's group number, and/or the user profile in group.Particularly, when having saved the respective user information in each group in core net, can only comprise group's group number when sending group and setting up, core net can determine the user profile in this group according to the group's group number received.Core net is according to respective user information determination customer location, and group's carrying is set up in the base station that notice covers relative users position in relevant position district.In LTE, general position information can identify with TA, but the application can be not restricted to TA, also can use other positional informations.Wherein, group user may in the overlay area of different base station, when setting up group, each base station corresponding to notice is needed to set up group's carrying, advice method specifically for each base station is identical, here to notify that the eNB1 in Fig. 3 is described, assuming that be registered in eCNS1, and the group user in eNB1 coverage, corresponding lane place is lane place 1 and lane place 2, be registered in eCNS2, and the group user in eNB1 coverage, corresponding lane place is lane place 1 and lane place 3, then eCNS1 notifies that eNB1 sets up group's carrying in lane place 1 and lane place 2, eCNS2 notifies that eNB1 sets up group's carrying in lane place 1 and lane place 3.
Step 403, receives the base station setting up group's carrying notice, the positional information that all notices received comprise is got union, is eating dishes without rice or wine to set up the shared carrying of cluster downlink of eating dishes without rice or wine comprising union correspondence position region.
For receiving each base station setting up group's carrying notice, its process is all identical, is still described for eNB1 here.ENB1 sets up notice according to the group's carrying received, and carries out the configuration of eating dishes without rice or wine of group's resource.Particularly, the union that the region of interface-free resources is the positional information extracted from all notices received is set up in base station.Such as, in the networking example shown in Fig. 3, eNB1 receives the notice of eCNS1, determine to set up carrying in lane place 1 and 2, eNB1 receives the notice of eCNS2, determine to set up carrying in lane place 1 and 3, therefore, eNB1 is in lane place 1, 2 and 3 wherein, the concrete processing mode setting up interface-free resources can be carried out as required, such as, after notice can being set up receiving group's carrying, interface-free resources is set up in relevant position district according to its corresponding positional information, after group's carrying notice that other core net subsequently received send, also relevant position information is extracted, and do not setting up the relevant position district enterprising line space mouth resource distribution of interface-free resources, like this, can be implemented in lane place corresponding to the union of the positional information extracted in all notices and set up descending shared carrying of eating dishes without rice or wine, or after also can setting up notice receiving the carrying of multiple group, extract location information also gets union, then carries out interface-free resources configuration in relevant position district, sets up descending shared carrying of eating dishes without rice or wine.
Step 404, a selection copy source as group data each core net of notice is set up from sending group's carrying to it in base station, and selection result is fed back to each core net sending notice.
After base station receives notification, set up each core net of group's carrying notice from transmission and select a copy source as group data, concrete selection mode can be arranged as required.Such as, can select first initiate group's carrying set up and the core net having interface-free resources to be successfully established as the copy source of group data.When carrying out the selection of group data copy source, for same group, the core net that different base station is selected can be different, also can be identical.
For the eNB1 in Fig. 3, assuming that after notice is set up in the group's carrying receiving eCNS1 and eCNS2, select eCNS1 as the copy source of group 1 data, then in eCNS1 feedback response message, notifying that eCNS1 is the data Replica source of group 1, such as can carry specific IE in feedback response message, show to be in PTT Pool, and carry expansion IE:Main(and be not limited thereto name), select this core net as the data source in user face for representing; The data Replica source of eCNS2 Bu Shi group 1 is being notified in eCNS2 feedback response message, such as can carry specific IE in feedback response message, show to be in PTT Pool, and carry expansion IE:Sub(be not limited thereto name), for representing this core net not as the data source in user face.
Step 405, the core net selected sets up downlink data path between self and base station, and other core net no longer set up downlink data path.
After being received the information of base station feedback by the core net that base station is chosen, between self and base station, set up downlink data path, for transmitting the downlink shared data of group 1; Other core net then no longer set up downlink data path, only have signaling channel, thus save S1 interface resource.
Step 406, utilizes downlink data path and cluster downlink of eating dishes without rice or wine shares carrying, and the downlink shared data of transmission group is to group user.
By above-mentioned steps 403, establish cluster downlink of eating dishes without rice or wine and share carrying, may be used for base station and downlink shared data is transferred to group user; By above-mentioned steps 405, set up downlink data path, may be used for core net and downlink shared data is transferred to base station.Like this, share carrying in conjunction with above-mentioned downlink data path and cluster downlink of eating dishes without rice or wine, core net can be realized downlink shared data is sent to group user by base station.
So far, the group communication method flow process in the application terminates.What above-mentioned flow process mainly provided is the transmission how realizing downlink shared data, and for above-mentioned transfer of data, owing to being the communication of point-to-point, existing mode therefore can be adopted to realize, and just repeats no more here.Under regard to some relevant treatment that may relate in group communication process and be described, specifically comprise: the process of the copy source of group's bearing modification, gravity treatment group data, backup and abnormal conditions.
One, group's bearing modification
In the embodiment shown in above-mentioned Fig. 3 and Fig. 4, be illustrated for the process of a base station.In this group communication process, when group's carrying needs to modify, the application preferably provides following processing mode, and unaffected to ensure unmodified group communication, Fig. 5 gives the schematic diagram of concrete processing mode, as shown in Figure 5:
1, according to sending to the group of base station to carry the positional information set up and comprise in notice, preserving in a base station and sending each core net of notice and the incidence relation of lane place to this base station; Such as, the eNB1 in Fig. 3 preserves the incidence relation of eCNS1 and lane place 1 and 2, and the eNB2 in Fig. 3 preserves the incidence relation of eCNS2 and lane place 1 and 3;
2, when the group relevant to group data copy source carry change need to revise time, such as, in core net eCNS1 in Fig. 3, group 1 user is due to reasons such as position, the changes of place group, when not needing the user for its interior section or whole lane place to provide transfer of data, eCNS1 still need this core net for all the other may exist or other provide the copy source of group data with the user covering core net.Therefore, eCNS1 does not delete and downlink data path between eNB1, the shared carrying of eating dishes without rice or wine of relevant position is not just needed by this core net of signaling eNB, such as do not need the shared carrying of eating dishes without rice or wine of lane place 1 and/or lane place 2, base station upgrades the incidence relation of lane place and corresponding core net after receiving signaling, such as delete position district 1 and/or the incidence relation between lane place 2 and eCNS1;
3, when the group irrelevant with group data copy source carry change need to revise time, such as, in core net eCNS2 in Fig. 3, group 1 user is due to position, the reasons such as place group change, when not needing the user for its interior section or whole lane place to provide transfer of data, the shared carrying of eating dishes without rice or wine of relevant position is not needed by this core net of signaling eNB, such as do not need the shared carrying of eating dishes without rice or wine of lane place 1 and/or lane place 3, base station upgrades the incidence relation of lane place and corresponding core net after receiving signaling, such as delete position district 1 and/or the incidence relation between lane place 3 and eCNS2,
4, when the incidence relation of certain lane place, base station and all core net is all deleted, the interface-free resources that this lane place is corresponding is deleted;
5, when the interface-free resources of certain group in all lane place is all deleted, base station notice sends each core net that notice is set up in group's carrying to this base station, carry out the deletion of group's carrying, the core net as group data copy source deletes the data source of this group; Such as, when the interface-free resources of group 1 in all lane place is all deleted, eNB1 notifies that eCNS1 and eCNS2 carries out the deletion of group's carrying, and eCNS1 deletes the data source of group 1.As long as but the interface-free resources of group in arbitrary lane place is not deleted, then the user plane bearer of this group just needs to retain;
6, after the core net as group data copy source finds that group's closing flow path is triggered, notify that the deletion of group's resource is carried out in all base stations relevant to relevant groups, such as, when the eCNS1 in Fig. 3 finds that group's closing flow path is triggered (as dispatcher triggers or the triggering of all the other abnormal conditions), the deletion of group's resource is carried out in each base station that eCNS1 notice is relevant.
Two, the copy source of eNB gravity treatment group data
In the aforementioned group's process of establishing provided, need selection core net as the copy source of group data, for providing group data.Carry out in process at group service; may need the copy source changing group data for various reasons, such as, there is exception or fault in the core net as group data copy source; or the core net of group data copy source no longer serves as the copy source of group data due to some strategy.In this case, data source gravity treatment can be carried out by the flow process shown in Fig. 6.As shown in Figure 6, this flow process comprises:
Step 601, the copy source (i.e. data source) needing to change group data is determined in base station.
Here, determine that the mode needing to change data source can have two kinds:
If the connection of 601a base station and core net 1 is normal, and core net 1 for a certain reason, determine the data source of no longer serving as this this group of base station, then core net 1 triggers the flow process changing data source, send data source to base station and switch preparation application, base station is determined after receiving this application to need to change data source; Wherein, it can be a self-defining S1 interface message that data source switches preparation application, or also can be increase IE to represent in existing S1 interface message; In this case, core net 1 wouldn't delete the data source of relevant groups, deletes after base station data source switches again;
601b, when base station finds that the connection of itself and core net 1 is abnormal, base station is directly determined to need to change data source.
Step 602, base station is from relevant to group and be not gravity treatment one core net in current data source.
Base station is according to all the other core net relevant in group's record, and gravity treatment one prepares as new data source.
Step 603, base station sends data source handover request to the core net of gravity treatment.
The relevant information setting up data source can be carried, IP and TEID, the group ID etc. of such as base station in the data source handover request sending to this gravity treatment core net.Assuming that select core net 2 as new data source.
Step 604, core net 2, according to the data source handover request received, carries out the data source configuration of group.
Downlink data path is set up between core net 2 and base station.
Wherein, the data source configuration of group can comprise Deta bearer, IP address and TEID etc.Existing mode specifically can be adopted to realize, just repeat no more here.
Step 605, core net 2 is to base station feedback data source switching response message.
In the data source switching response message feeding back to base station, the information of data source can be carried, IP and TEID, the group ID etc. of such as core net.
Step 606, after base station receives data source switching response message, switching core net 2 is group data copy source.
Determine that group is converted to from core net 2 in the data source of this base station, using the data source (i.e. the copy source of group data) of core net 2 as group.
Step 607, the downlink shared data transmission of group is carried out in the downlink data path utilizing core net 2 to set up and the descending shared carrying of group.
Because data source has been switched to core net 2 and core net 2 has established downlink data path, therefore the downlink shared data of group has utilized the downlink data path between core net 2 and base station and cluster downlink to share carrying to transmit.
When determining in step 601 to need the mode of carrying out data source renewal to be the mode of 601a, need to perform step 608 ~ 609 further: base station notice core net 1 data source has switched, and core net 1 carries out the release of group data resource.
Three, alternative and abnormality processing
For realizing disaster tolerance process in PTT POOL networking, need the backup carrying out core network data, like this, when certain core net occurs abnormal, another core net of preserving its Backup Data can provide the Backup Data of abnormal core net, for carrying out corresponding troubleshooting.
During multi-core network, the framework of data backup can have multiple, can concentrate in a core net by the Backup Data of multiple core net, carry out active and standby in this core net; Or, also between multiple core net, the preservation of Backup Data can be carried out mutually, such as, the chain type backup shown in Fig. 7.
What relate generally in the application is the backup with cluster relevant information.Group service comprises: other business (such as dynamic reorganization) that group call, point to point call, cluster are relevant.For these group services, all need corresponding UE in net information, positional information and group's relevant information.Therefore, in the application when backup set group relevant information, Backup Data can comprise the most basically: the attachment state of user and the current position of user.Wherein, the position of user can comprise the set in present position-region and close position district, like this, can reduce user when frequently moving, the frequency of Backup Data, and increases when using Backup Data, to the accuracy rate that customer location judges.In addition, two kinds of Backup Datas can as optionally below:
The signing group of user: if data of opening an account between core net are identical, so signing group is as optional Backup Data;
The current group of user: because Backup Data is not use when regular traffic, the probability that CNS breaks down is smaller again, and so, the current group of user can not back up, thus reduces the frequency of your backups caused because user frequently changes group; When not backing up the current group of user, when using Backup Data, think that this user is in its all signing group.
Owing to not using when regular traffic, therefore the frequency initiated of backup and flow process, in whole operation flow, lower priority can be set to, such as, lower than the priority of setting.When the opposite equip. overload backed up and fault, corresponding frequency can also be reduced further.
Because the data of core net are more, so when data are inaccurate, likely there is inconsistent situation in Backup Data and initial data.Specifically inconsistently may to comprise:
The attribute of a, user is inconsistent, such as customer location, attribute inconsistent can with user next time synchrodata cover; Such as, in Fig. 8 first two steps operation, eCNS1 sends up-to-date user data backup to eCNS2, when eCNS2 finds that the information of identical UE there are differences, utilizes the Backup Data just received to cover the Backup Data preserved accordingly;
The number of b, user is inconsistent, and such as user has in certain core net, and does not have in another core net of backup, and this needs to trigger corresponding resource aligning.Such as, in Fig. 8 three step operations below, when eCNS2 finds that in the up-to-date Backup Data received, total number of users order is different from total number of users order in the Backup Data of preservation, feed back the inconsistent notice of total number to eCNS1, eCNS1 sends full dose user ID data to eCNS2, carries out Backup Data renewal.
In the process of whole group, the interface relating to core net comprises: the interface between the interface between core net and dispatcher, core net and the interface between core net and base station.When carrying out disaster tolerance process, a core net needs to determine whether other core net covering same area break down, and carries out corresponding disaster tolerance process in time.Specifically determine that mode can be:
After dispatcher determines that the Tx interface between self and certain core net A disconnects, dispatcher sends to another core net B by sending to the request message of core net A, and carries the failure identification of core net A; When the S10 that core net B finds between self and core net A disconnects and receives from dispatcher the request message comprising core net A failure identification, determine that whole core net A occurs abnormal; When the S10 that core net B finds between self and core net A disconnect but do not receive that dispatcher sends comprise the request message of core net A failure identification time, determine that the S10 between core net A and core net B connects fault; When the S10 that core net B does not find between self and core net A disconnect but receive that dispatcher sends comprise the request message of core net A failure identification time, determine the disconnecting between core net A and dispatcher.Then core net B can process accordingly according to concrete fault type.Wherein, have the fault discovery mechanism of oneself in system, can find the fault of each core net according to this mechanism, the application does not limit for fault discovery mechanism.
When core net B finds that whole core net A breaks down, the Backup Data for core net A can use as follows: think that UE on core net A is at net, the UE as backup does not have the information of current group, then think that user is in all signing groups; Set up group's resource when group sets up, when point is exhaled, trigger paging; User on core net A enters ECM-IDLE state, when this user initiatively initiates business, is attached to covers in other core net of same area with core net A according to S1-Flex characteristic; Core net B, after waiting for the UE TAU time-out on core net A, determines UE attachment removal, upgrades the attachment state of described UE.
The above-mentioned trunking communication system realizing method based on POOL networking be in the application.By the way, PTT POOL networking can be carried out in group system, improve the disaster tolerance performance of group system.
The foregoing is only preferred embodiment of the present invention, not in order to limit 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 the scope of protection of the invention.
Claims (17)
1., based on a digital cluster system implementation method for POOL networking, it is characterized in that, comprising:
In described digital cluster system, carry out POOL networking, multiple core net covers identical region, for carrying out disaster tolerance;
Dispatcher initiates group's foundation to each core net at the user place of group to be set up, and each core net described, according to the position of described group user, notifies that group's carrying is set up in corresponding base station; The positional information setting up group's carrying is comprised in described notice;
Receive arbitrary base station of described notice, the positional information that all notices received comprise is got union, eat dishes without rice or wine to set up the shared carrying of cluster downlink of eating dishes without rice or wine comprising described union correspondence position region;
A copy source as group data is selected in described arbitrary base station from each core net sending described notice to this base station, selection result is fed back to each core net sending notice to described arbitrary base station, and downlink data path is set up between the core net selected and described arbitrary base station, utilize described downlink data path and described cluster downlink of eating dishes without rice or wine to share and carry the downlink shared data transmission carrying out described group.
2. method according to claim 1, it is characterized in that, described arbitrary base station selects a copy source as group data to comprise from each core net sending described notice to this base station: initiate group's carrying foundation and the core net having interface-free resources to be successfully established, as the copy source of group data for described arbitrary base station selected first.
3. method according to claim 1, is characterized in that, the method comprises further: according to the positional information comprised in described notice, preserves and send each core net of notice and the incidence relation of lane place to described arbitrary base station in described arbitrary base station;
When the core net as group data copy source does not need to provide data for the user of described group in its assigned address district, inside first, keep described downlink data path, by base station arbitrary described in signaling delete the first assigned address district and as group data copy source core net between incidence relation;
Sending in each core net of described notice to described arbitrary base station, if arbitrary non-selected core net do not need for the user of described group in its assigned address district, inside second data are provided time, delete the incidence relation described in the second specified location area between non-selected core net by base station arbitrary described in signaling.
4. the method according to claim 3 or 4, is characterized in that, the method comprises further: when the incidence relation of any position district and all core net is all deleted in described arbitrary base station, delete the interface-free resources that described any position district is corresponding;
When the interface-free resources of all lane place of described group is all deleted, described arbitrary base station notice sends the deletion that each core net notified carries out the carrying of described group to this base station, the core net as group data copy source deletes the data source of described group.
5. method according to claim 1, is characterized in that, the method comprises further: after the core net as group data copy source finds that group's closing flow path is triggered, notify that the deletion of group's resource is carried out in all base stations relevant to described group.
6. method according to claim 1, it is characterized in that, the method comprises further: when the core net as group data copy source changed by needs, described arbitrary base station is gravity treatment one from non-selected core net, and sends data source handover request to the core net of this gravity treatment; The core net of described gravity treatment configures the data source of described group, between the core net and described arbitrary base station of described gravity treatment, set up downlink data path, and to described arbitrary base station feedback response message; After described arbitrary base station receives response message, the core net switching described gravity treatment is group data copy source, and the downlink data path utilizing gravity treatment core net to set up and described cluster downlink share the downlink shared data transmission that described group is carried out in carrying.
7. method according to claim 6, it is characterized in that, determine to need to change and as the mode of the core net of group data copy source be: when described arbitrary base station determine self and as group data copy source core net between connection there is exception time, determine the core net of needs replacing as group data copy source; Or, when the data source that described arbitrary base station receives the transmission of the described core net as group data copy source prepares handover request, determine to need to change the core net as group data copy source.
8. method according to claim 7, it is characterized in that, when the data source that described arbitrary base station receives the transmission of the described core net as group data copy source prepares handover request, after the core net switching described gravity treatment in described arbitrary base station is group data copy source, the core network data source switching that notice sends data source preparation handover request completes, and this core net carries out the deletion of described group data resource.
9. method according to claim 1, is characterized in that, the method comprises further: for the multiple core net covering same area, carry out the data backup of cluster user; The data of backup comprise: the attachment state of user and the current position of user;
When the arbitrary core net in described multiple core net occurs abnormal, second core net of preserving its Backup Data provides the Backup Data of abnormal core net, for carrying out corresponding troubleshooting.
10. method according to claim 9, is characterized in that, the current position of described user comprises the set in present position-region and close position district.
11. methods according to claim 9, is characterized in that, the data of described backup comprise further: the current group of user and/or the signing group of user.
12. methods according to claim 9 or 11, is characterized in that, when carrying out troubleshooting according to Backup Data, when not comprising the current group of user in described Backup Data, determine described user at it in all groups of contracting; When described Backup Data comprises the current group of user, determine that user is in its current group.
13. methods according to claim 9, is characterized in that, are kept in same core net by the Backup Data of the multiple core net covering same area; Or, between the multiple core net covering same area, mutually carry out the preservation of Backup Data.
14. methods according to claim 9 or 13, is characterized in that, the priority that described backup is initiated is the priority lower than setting; When the opposite equip. overload backed up or fault, reduce the frequency of backup.
15. methods according to claim 9 or 13, is characterized in that, if when the user property in the initial data of arbitrary core net and Backup Data is inconsistent, cover the user property in Backup Data according to the user property of initial data when backing up next time; If when the number of users in the initial data of arbitrary core net and Backup Data is inconsistent, the backup of full dose user data is all sent to described second core net by described arbitrary core net, for upgrading the Backup Data that it is preserved.
16. methods according to claim 9, it is characterized in that, the method comprises further: after dispatcher is determined between self and described arbitrary core net Tx interface and disconnected, dispatcher sends to described second core net by sending to the request message of described arbitrary core net, and carries the failure identification of described arbitrary core net;
Determine that described arbitrary core net occurs that abnormal mode comprises: when described second core net finds that the S10 between self and described arbitrary core net disconnects and receives from described dispatcher the request message comprising described failure identification, determine that described arbitrary core net occurs abnormal.
17. methods according to claim 9 or 16, it is characterized in that, when described arbitrary core net occurs abnormal, user in described arbitrary core net enters ECM-IDLE state, when this user initiatively initiates business, be attached to according to S1-Flex characteristic and cover in other core net of same area with described arbitrary core net; Described second core net, after waiting for the UE TAU time-out in described arbitrary core net, determines described UE attachment removal.
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