CN105992257B - Public safety communication implementation method and device - Google Patents
Public safety communication implementation method and device Download PDFInfo
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- CN105992257B CN105992257B CN201510045187.1A CN201510045187A CN105992257B CN 105992257 B CN105992257 B CN 105992257B CN 201510045187 A CN201510045187 A CN 201510045187A CN 105992257 B CN105992257 B CN 105992257B
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Abstract
The invention discloses a public safety communication implementation method, which comprises the following steps: when monitoring an S1 connection fault, the base station judges whether an adjacent single-station operation public safety (IOPS) system exists; the base station comprises a node B (eNB) and a nomadic eNB (NeNB); if the adjacent IOPS system exists, the base station joins the adjacent IOPS system; and if the adjacent IOPS system does not exist, the base station establishes the IOPS system. The invention discloses a public safety communication implementation device.
Description
Technical Field
The present invention relates to the field of wireless communication technologies, and in particular, to a Public Safety communication implementation method and apparatus based on an Isolated E-UTRAN Operation for Public Safety (IOPS) system for Public Safety.
Background
The trunking communication system is a special wireless communication system developed for meeting the demand of commanding and scheduling of industry users and oriented to specific industry applications, a large number of wireless users in the system share a small number of wireless channels, and the system is mainly applied to commanding and scheduling, and is a multipurpose and high-efficiency wireless communication system. The cluster communication system has wide application markets in the fields of government departments, public safety, emergency communication, electric power, civil aviation, petrochemical industry, army and the like.
Group Communication in the 3rd Generation Partnership Project (3 GPP) Long Term Evolution (LTE) is called Group Communication Service capability (GCSE), and fig. 1 shows a system architecture of the LTE GCSE.
With the increasing shortage of frequency spectrum resources, the call for public network clusters is increasing. Public network clustering refers to the development of specific cluster communication services on the basis of the existing public mobile communication network. In order to ensure the ability of the trunking user equipment to continue to talk under the condition of performing a critical service, 3GPP currently proposes a need for an IOPS mode, where the IOPS mode refers to a mode in which an (N) eNB (or a group of (N) enbs) can still provide a certain level of communication ability for trunking users when a loop is interrupted or fails to normally transmit signaling and data, as shown in fig. 2, a schematic diagram of a public safety communication architecture based on the IOPS mode is shown. In fig. 2, the left side is a general LTE network, the right side is an IOPS network, and an MME, an S/PGW, a public security server, and the like in the IOPS network are configured locally, where an (N) eNB in the IOPS network may have a limited S1 connection with the general LTE network. Wherein, (N) eNB refers to eNB or nomadic eNB (nenb).
During the research and practice of the prior art, the following problems are found in the prior art: when the base station determines that the link of the S1 fails, an IOPS system is newly established, and if each base station that determines that the link of the S1 fails newly establishes an IOPS system, each base station needs to have a connection to a local core network, and the coverage of each individual IOPS system is limited, and after the individual IOPS systems are established, a merging operation is needed, thereby increasing the complexity of implementing the IOPS systems.
Disclosure of Invention
In order to solve the existing technical problem, embodiments of the present invention provide a public safety communication implementation method and device.
The embodiment of the invention provides a public safety communication implementation method, which comprises the following steps:
when monitoring an S1 connection fault, the base station judges whether an adjacent single-station operation public safety IOPS system exists;
if the adjacent IOPS system exists, the base station joins the adjacent IOPS system;
and if the adjacent IOPS system does not exist, the base station establishes the IOPS system.
In the above scheme, the connection failure of S1 is: s1 disconnected or S1 limited; the method further comprises the following steps:
when the base station monitors that the connection of S1 is disconnected, the connection is confirmed to be S1 connection failure, wherein the base station is an eNB; alternatively, the first and second electrodes may be,
and when the base station monitors a notification about limited connection of S1 sent by the operation, administration and maintenance OAM, confirming that S1 is a connection fault, wherein the base station is eNB or NeNB.
In the foregoing solution, the determining whether there is a neighboring IOPS system includes:
and the base station judges whether a notification message sent by a neighboring base station of the established IOPS system is received before the connection fault of S1 is monitored, and if so, the base station judges that the neighboring IOPS system exists.
In the foregoing solution, when the proximity IOPS system exists, the method further includes: and the base station judges whether only one notification message is received or not, if so, judges that one adjacent IOPS system exists and joins the corresponding adjacent IOPS system.
In the above scheme, the method further comprises: and after the base station is initialized, judging whether an adjacent IOPS system exists or not, wherein the base station is a NeNB.
In the foregoing solution, the determining whether there is a neighboring IOPS system includes:
after monitoring that the connection fault of S1 is detected or the base station is initialized, the base station sends a request message to all adjacent base stations to request to inform the adjacent base stations whether an IOPS system is established;
the base station receives a response message returned by the adjacent base station;
the base station judges whether the response message has an indication of an established IOPS system, and if the judgment result is that at least one indication has the established IOPS system, the base station judges that an adjacent IOPS system exists; and if the judgment results indicate that no IOPS system is established, judging that no adjacent IOPS system exists.
In the foregoing solution, when the proximity IOPS system exists, the method further includes: the base station judges whether one or more indications exist in the response message as the established IOPS system,
if the judgment result is that only one indication is that the IOPS system is established, or the judgment result is that a plurality of indications in all the response messages are that the IOPS system is established and the IOPS systems are the same, judging that one adjacent IOPS system exists and adding the corresponding adjacent IOPS system;
and if the judgment result shows that a plurality of instructions indicate that the IOPS system is established and a plurality of different IOPS systems are indicated, judging that a plurality of adjacent IOPS systems exist, merging the corresponding plurality of adjacent IOPS systems, and adding the merged adjacent IOPS systems or selecting one of the adjacent IOPS systems.
In the above scheme, the adding, by the base station, the neighboring IOPS system includes: the base station establishes a local S1 connection broadcasting the added cell identity and/or public land mobile network PLMN identity and/or tracking area identity TAI specific to the neighboring IOPS system.
In the above solution, the base station newly establishing the IOPS system includes:
the base station establishes a local S1 connection;
the base station sends a synchronization signal special for the newly-built IOPS system, or sends a system broadcast message special for the newly-built IOPS system, wherein the special system broadcast message at least comprises a PLMN identification special for the IOPS system;
the eNB automatically establishes an IOPS system, and the NeNB establishes the IOPS system under the control of an operator.
In the above solution, after the base station joins the adjacent IOPS system or newly establishes the IOPS system, the method further includes:
the base station informs the UE in the coverage area and informs the user of the following information through the UE: operating in an IOPS communication mode and/or supporting limited S1 connections and/or supporting only limited local traffic.
The embodiment of the invention also provides a public safety communication implementation device, which is applied to a base station and comprises the following components: monitoring module, judging module and processing module, wherein:
the monitoring module is used for monitoring the connection state of S1 and informing the judging module when the connection fault of S1 is monitored;
the judging module is used for judging whether an adjacent IOPS system exists or not;
the processing module is used for joining the adjacent IOPS system when the judging module judges that the adjacent IOPS system exists; and the system is also used for newly building the IOPS system when the judging module judges that no adjacent IOPS system exists.
In the above scheme, the connection failure of S1 is: s1 disconnected or S1 limited;
when the device is applied to the eNB, the monitoring module is further configured to determine that the connection failure is S1 when the disconnection of the S1 is monitored;
when the device is applied to an eNB or a NeNB, the monitoring module is further configured to confirm that the connection failure is S1 when monitoring a notification that the connection of S1 is limited, which is sent by OAM.
In the above scheme, the apparatus further comprises: the system comprises a first interaction module, a second interaction module and a third interaction module, wherein the first interaction module is used for receiving a notification message, and the notification message is used for indicating that an IOPS system is established in a neighboring base station;
the determining module is further configured to determine whether the first interaction module receives the notification message before monitoring the connection failure of S1, and if the determination result is yes, determine that the neighboring IOPS system exists.
In the foregoing solution, the determining module is further configured to determine, when there is an adjacent IOPS system, whether the first interaction module receives only one notification message, and if the determination result is yes, determine that there is an adjacent IOPS system, and notify the processing module to join the corresponding adjacent IOPS system.
In the foregoing solution, when the apparatus is applied to a NeNB, the apparatus further includes: and the initialization module is used for executing NeNB initialization operation and informing the judgment module to judge whether the adjacent IOPS system exists or not after the initialization is completed.
In the above scheme, the apparatus further comprises: the second interaction module is used for sending a request message to all adjacent base stations after monitoring that the connection failure of S1 or after initialization, and requesting to inform the adjacent base stations whether an IOPS system is established; the base station is also used for receiving a response message returned by the adjacent base station;
the judging module is further configured to judge whether there is an indication that there is an established IOPS system in the response message, and if at least one indication is an established IOPS system, determine that there is an adjacent IOPS system; and if the judgment results indicate that no IOPS system is established, judging that no adjacent IOPS system exists.
In the above scheme, the determining module is further configured to determine whether one or more indications exist in the response message as an established IOPS system when there is an adjacent IOPS system, and determine that there is an adjacent IOPS system if only one indication exists in the response message as a determination result, or determine that there are multiple indications in all response messages as an established IOPS system and that all the multiple indications indicate the same IOPS system, and notify the processing module to join in the corresponding adjacent IOPS system; and if the judgment result shows that a plurality of instructions indicate that the IOPS system is established and the plurality of response messages indicate a plurality of different IOPS systems, judging that a plurality of adjacent IOPS systems exist, informing the processing module to merge the corresponding plurality of adjacent IOPS systems and add the merged adjacent IOPS systems, or informing the processing module to select one of the adjacent IOPS systems.
In the foregoing solution, when joining the neighboring IOPS system, the processing module is further configured to: a local S1 connection is established broadcasting the cell identity and/or PLMN identity and/or TAI specific to the joined neighboring IOPS system.
In the foregoing solution, when the IOPS system is newly built, the processing module is further configured to: establishing a local S1 connection; sending a synchronization signal special for the newly-built IOPS system, or sending a system broadcast message special for the newly-built IOPS system, wherein the special system broadcast message at least comprises a PLMN identification special for the IOPS system;
when the device is applied to the eNB, the processing module is also used for automatically building an IOPS system; when the device is applied to the NeNB, the processing module is further configured to establish a new IOPS system under the control of an operator.
In the foregoing solution, the processing module is further configured to notify a UE in a coverage area after joining the neighboring IOPS system or newly building an IOPS system, and notify a user of the following information through the UE: operating in an IOPS communication mode and/or supporting limited S1 connections and/or supporting only limited local traffic.
According to the method and the device for realizing public safety communication, provided by the embodiment of the invention, when a base station monitors an S1 connection fault, whether an adjacent IOPS system exists is judged; if the adjacent IOPS system exists, the base station joins the adjacent IOPS system; and if the adjacent IOPS system does not exist, the base station establishes the IOPS system. Through the scheme, when the S1 connection fault occurs, the base station does not establish the IOPS system indiscriminately, but judges the adjacent IOPS system first, and only when the adjacent IOPS system does not exist, the IOPS system is established, so that the probability of establishing a single IOPS system can be reduced, the situation of a plurality of adjacent IOPS systems is avoided, and the complexity of realizing the IOPS system is reduced.
Drawings
Fig. 1 is a system architecture of LTE GCSE;
FIG. 2 is a schematic diagram of a public safety communication architecture based on IOPS mode;
fig. 3 is a schematic flow chart of a public safety communication implementation method provided in an embodiment of the present invention;
fig. 4 is a schematic flow chart of public safety communication implementation provided in an embodiment of the present invention;
fig. 5 is a schematic flow chart of public safety communication implementation provided in the second embodiment of the present invention;
fig. 6 is a schematic flow chart of public safety communication implementation provided in the third embodiment of the present invention;
fig. 7 is a schematic structural diagram of a public safety communication implementation apparatus according to an embodiment of the present invention.
Detailed Description
The technical solution of the present invention is further elaborated below with reference to the drawings and the specific embodiments.
The public safety communication implementation method based on the IOPS system provided by the embodiment of the invention is shown in FIG. 3, and comprises the following steps:
In this embodiment, the type of the base station may be eNB or NeNB, unless otherwise specified.
The S1 connection failure means: the S1 connection is broken or the S1 connection is limited.
The S1 connection limitation includes: the S1 control plane connection is normal but the S1 user plane connection is disconnected, or the S1 control plane connection is normal but the S1 user plane connection is limited. Wherein, S1 limited user plane connection means that limited user plane data without guaranteed service quality can be transmitted.
The base station monitors the connection state of S1 in real time or periodically, and when the S1 connection disconnection is monitored, the connection fault is confirmed to be S1 connection fault; the base station is of the type suitable for eNB;
if the connection limitation of S1 occurs, an Operation Administration and Maintenance (OAM) entity sends a notification about the connection limitation of S1 to the base station, and when the base station monitors the notification, it confirms that the connection is a connection failure of S1. The types of base stations used herein are eNB and NeNB. The reason why the S1 connection is limited may be: nomadic temporarily deployed S1 connection, or an alternative S1 connection in case of disaster.
When monitoring the connection fault of S1, the base station determines whether there is a neighboring IOPS system in the following manner:
the method comprises the steps that a base station judges whether a notification message sent by a neighboring base station of an established IOPS system is received before the connection fault of S1 is monitored, and if the judgment result is yes, the base station judges that the neighboring IOPS system exists; otherwise, the judgment is that the signal is absent.
In the second mode, after monitoring that the connection of S1 fails, the base station sends a request message to all adjacent base stations to request to inform the adjacent base stations whether an IOPS system is established;
the base station receives a response message returned by the adjacent base station;
the base station judges whether the response message has an instruction of the established IOPS system, and if the judgment result is that at least one instruction indicates that the established IOPS system exists, the base station judges that the adjacent IOPS system exists; and if the judgment results indicate that no IOPS system is established, judging that no adjacent IOPS system exists.
In addition, when the base station is a NeNB, there is also a case where: and after the NeNB is initialized, judging whether a neighboring IOPS system exists or not, wherein the judgment adopts the second mode.
Step 102, if the adjacent IOPS system exists, the base station joins the adjacent IOPS system.
In the first mode, when there is an adjacent IOPS system, the base station further needs to determine whether only one notification message is received, and if the determination result is yes, it is determined that there is an adjacent IOPS system, and the base station joins the corresponding adjacent IOPS system.
In the second mode, when there is an adjacent IOPS system, the base station further needs to determine whether there is one or more indications in the response message as an established IOPS system, and if the determination result is that there is only one indication as an established IOPS system, or if the determination result is that there are multiple indications in all the response messages as established IOPS systems and all the indications indicate the same IOPS system, it is determined that there is an adjacent IOPS system, and the corresponding adjacent IOPS system is added; and if the judgment result shows that a plurality of instructions indicate that the IOPS system is established and a plurality of different IOPS systems are indicated, judging that a plurality of adjacent IOPS systems exist, merging the corresponding plurality of adjacent IOPS systems, and adding the merged adjacent IOPS systems or selecting one of the adjacent IOPS systems.
The joining proximity IOPS system includes: a local S1 connection is established, and the added cell Identity and/or Public Land Mobile Network (PLMN) Identity and/or Tracking Area Identity (TAI) specific to the neighboring IOPS system is broadcasted.
The merged IOPS system means: multiple IOPS systems are configured to use the same cell identity and/or PLMN identity and/or TAI.
It should be noted that there is also a result in the first mode, namely: in the case that the base station receives a plurality of notification messages indicating different neighboring IOPS systems before monitoring the connection failure at S1, the base station receiving the notification messages does not perform any processing, and the neighboring base station sending the notification messages merges the plurality of different neighboring IOPS systems.
And step 103, if the adjacent IOPS system does not exist, the base station establishes a new IOPS system.
And aiming at the situation that the adjacent IOPS system is determined not to exist in the first mode, the base station does not process the situation.
For the scenario that it is determined in the second mode that no adjacent IOPS system exists, the base station needs to establish a new IOPS system.
The new IOPS system is as follows: establishing a local S1 connection; and then, sending a synchronization signal specific to the newly-built IOPS system, or sending a system broadcast message specific to the newly-built IOPS system. Here, the eNB automatically establishes an IOPS system, and the NeNB controls the establishment of the IOPS system by the operator.
When a base station joins in a neighboring IOPS system or newly establishes an IOPS system, the base station notifies (neighboring or newly established) UE in a coverage area of the IOPS system and notifies a user of the following information through the UE: operating in an IOPS communication mode and/or supporting limited S1 connections and/or supporting only limited local traffic.
The invention is illustrated by the following specific examples.
Example one
For a scenario in which the base station has already established the IOPS system, as shown in fig. 4, a process of implementing public safety communication includes:
in step 201, the base station a establishes an IOPS system a.
In this embodiment, if not specifically stated, the base station a may be an eNB or a NeNB.
The base station a establishes a local S1 connection, and establishes the IOPS system A through a local S1 connection.
Establishing a local S1 connection means: the base station a is connected to a local Mobility Management Entity (MME), a Serving GateWay (SGW) and a packet data network GateWay (PDN GateWay, PGW); the local MME, SGW and PGW may be locally and independently located or located in the base station a.
Establishing the IOPS system A is carried out by one of the following methods: the base station a sends a synchronization signal specific to the IOPS system a, or the base station a sends a system broadcast message specific to the IOPS system a. Wherein the proprietary system broadcast message includes at least a PLMN identity proprietary to the IOPS system.
The IOPS system a may be deployed in an LTE spectrum or a public safety spectrum, and has a proprietary cell identity, PLMN identity, TAI, and the like.
In step 202, the base station a sends a notification message to the neighboring base stations.
The neighboring base station means: a base station supporting an IOPS system, having an X2 connection with base station a and whose presence is known to base station a.
Base station a sends a notification message to the neighboring base station through the X2 connection, indicating that base station a has the established IOPS system a. The notification message may carry the cell identifier, PLMN identifier and/or TAI specific to the IOPS system a to achieve the above indication.
In step 203, the neighboring base station returns a response message.
The adjacent base station returns a response message through the X2 connection, and the response message at least carries the information whether the IOPS system is established.
In step 204, the base station a determines whether there is a neighboring IOPS system, if yes, the process goes to step 205, otherwise, the process goes to step 206.
According to the response message in step 203, if at least one of all the response messages received by the base station a indicates that there is an established IOPS system, the base station a determines that there is an adjacent IOPS system, and goes to step 205; if all the response messages indicate that there is no established IOPS system, the base station a determines that there is no neighboring IOPS system and goes to step 206.
Step 205, merging the plurality of IOPS systems into one IOPS system.
In this embodiment, the plurality of IOPS systems includes: IOPS system a and one or more neighboring IOPS systems (the response message in step 203 may indicate the presence of one or more different established IOPS systems, which are different from IOPS system a). Merging multiple IOPS systems refers to: configuring the plurality of IOPS systems to adopt the same cell identity and/or the same PLMN identity and/or the same TAI, etc. The merged IOPS system may have one or more locally Evolved Packet Core networks (EPCs), such as one or more MMEs, SGWs, PGWs, and the like.
In step 206, the neighboring base station determines whether a connection failure occurs in S1, and if so, the process goes to step 207, otherwise, the process goes to step 208.
S1 connection failure means: the S1 connection is broken or the S1 connection is limited. Wherein, whether the S1 disconnection occurs can be determined by the detection mechanism of the adjacent base station (eNB) itself; if S1 connection restriction occurs, the neighboring base station (eNB or NeNB) is notified by the OAM entity.
In step 207, the neighboring base station joins the IOPS system a.
Since the base station a in step 202 has already notified the existence of all its neighboring base stations IOPS system a, and determines that only one IOPS system a exists through step 204 (for the neighboring base station, only one notification message for notifying the existence of the established IOPS system is received, the neighboring base station confirms that only one neighboring IOPS system exists), when the neighboring base station has S1 connection failure, the neighboring base station directly joins the IOPS system a to become a part of the IOPS system a, for example, the neighboring base station broadcasts the same cell identifier and/or PLMN identifier and/or TAI as other base stations (e.g., base station a) in the IOPS system a.
In step 208, the neighboring base station continues to monitor S1 the connection status, and returns to step 206.
Example two
As shown in fig. 5, a method for implementing public safety communication in a scenario in which an eNB newly establishes an IOPS system includes:
in step 301, the eNB monitors that a connection failure S1 occurs.
S1 connection failure means: the S1 interface is disconnected or the S1 connection is restricted. Wherein, whether the disconnection of the S1 interface occurs can be determined by the detection mechanism of the eNB itself; if S1 connection restriction occurs, the eNB is notified by the OAM entity.
In step 302, the eNB sends a request message to the neighboring base station.
The neighboring base station means: base stations (of the type including eNB and NeNB) that support IOPS operation, have an X2 connection with the eNB and whose presence is known to the eNB.
The eNB sends a request message to the neighboring base station through the X2 connection for requesting to inform the neighboring base station whether there is an established IOPS system.
In step 303, the neighboring base station returns a response message.
The neighboring base station returns a response message through the X2 connection, and the response message at least carries the information whether the IOPS system is established.
In step 304, the eNB determines whether there is a neighboring IOPS system, if so, it goes to step 305, otherwise, it goes to step 306.
According to the response message in step 303, if at least one of all the response messages received by the eNB indicates that: if there is an established IOPS system, the eNB determines that there is a neighboring IOPS system, and goes to step 305; if all response messages indicate: if there is no established IOPS system, the eNB determines that there is no neighboring IOPS system and goes to step 306.
In step 305, the eNB joins the neighboring IOPS system.
When only one of all the response messages indicates that an IOPS system is established, or a plurality of response messages indicate that the IOPS system is established and the IOPS systems are the same, determining that a neighboring IOPS system exists, and adding the eNB into the corresponding neighboring IOPS system; when multiple indications in all the response messages indicate that the IOPS system is established and multiple different IOPS systems are indicated, determining that multiple adjacent IOPS systems exist, merging the corresponding multiple adjacent IOPS systems by the eNB, and adding the merged adjacent IOPS systems, or selecting to add one of the adjacent IOPS systems by the eNB.
The eNB joins the neighboring IOPS system and becomes a part of the neighboring IOPS system, for example, the same cell identity and/or PLMN identity and/or TAI are broadcast as other base stations (types including eNB and NeNB) in the neighboring IOPS system.
Step 306, the eNB establishes the IOPS system.
Since there is no neighboring IOPS system, the eNB needs to initialize the IOPS operation, i.e. to build an IOPS system: the eNB establishes a local S1 connection; and then, sending a synchronization signal specific to the newly-built IOPS system, or sending a system broadcast message specific to the newly-built IOPS system.
In this embodiment, the eNB automatically creates an IOPS system.
When the eNB joins the adjacent IOPS system or newly establishes the IOPS system, the eNB informs (adjacent or newly established) UE in the coverage area of the IOPS system and informs the user of the following information through the UE: operating in an IOPS communication mode and/or supporting limited S1 connections and/or supporting only limited local traffic.
The embodiment is also applicable to a scenario in which the NeNB newly establishes the IOPS system, which is different from the scenario in which the eNB newly establishes the IOPS system: corresponding to step 306, the NeNB needs to establish a new IOPS system under the control of the operator.
EXAMPLE III
A method for implementing public safety communication in a scenario in which an IOPS system is newly built in a NeNB is shown in fig. 6. The method comprises the following steps:
at step 401, the NeNB initializes.
The NeNB may provide coverage in areas without coverage (e.g., underground) or in areas where disasters occur (e.g., earthquakes), and typically includes: base station, antenna, microwave backhaul, local service support, etc.
The NeNB initialization comprises: NeNB power-on, self-test and start-up, etc.
At step 402, the NeNB sends a request message to a neighboring base station.
The neighboring base station means: a base station (type including eNB and NeNB) supporting an IOPS system, having an X2 connection with the NeNB and whose presence is known by the NeNB.
The NeNB sends a request message to the neighboring base station through the X2 connection for requesting to inform the neighboring base station whether there is an established IOPS system.
In step 403, the neighboring base station returns a response message.
The neighboring base station returns a response message through the X2 connection, and the response message at least carries the information whether the IOPS system is established.
In step 404, the NeNB determines whether there is a neighboring IOPS system, and if so, it goes to step 405, otherwise, it goes to step 406.
According to the response message in step 403, if at least one of all the response messages received by the NeNB indicates that: if there is an established IOPS system, the NeNB determines that there is an adjacent IOPS system, and goes to step 405; if all response messages indicate: if there is no established IOPS system, the NeNB determines that there is no neighboring IOPS system and goes to step 406.
In step 405, the NeNB joins the neighboring IOPS system.
When only one of all the response messages indicates that the IOPS system is established, or a plurality of response messages indicate that the IOPS system is established and the IOPS systems are the same, determining that a neighboring IOPS system exists, and adding the NeNB into the corresponding neighboring IOPS system; when multiple pieces of response messages indicate that the IOPS system is established and multiple pieces of response messages indicate multiple different IOPS systems, determining that multiple adjacent IOPS systems exist, firstly, the NeNB merges the corresponding multiple adjacent IOPS systems and joins the merged adjacent IOPS systems, or the NeNB selects to join one of the adjacent IOPS systems.
Step 406, NeNB creates IOPS system.
The NeNB establishes an IOPS system under the control of an operator: controlling the NeNB to establish a local S1 connection; then, the NeNB sends a synchronization signal specific to the newly-built IOPS system, or the NeNB sends a system broadcast message specific to the newly-built IOPS system.
When the NeNB joins the adjacent IOPS system or newly establishes the IOPS system, the NeNB notifies (adjacent or newly established) the UE in the coverage area of the IOPS system and notifies the user of the following information through the UE: operating in an IOPS communication mode and/or supporting limited S1 connections and/or supporting only limited local traffic.
According to the scheme of the embodiment of the invention, when S1 connection failure occurs, the base station does not establish the IOPS system indiscriminately, but judges the adjacent IOPS system first, and establishes the IOPS system only when the adjacent IOPS system does not exist, so that the probability of establishing a single IOPS system can be reduced, the situation of multiple adjacent IOPS systems is avoided, and the complexity of realizing the IOPS system is reduced.
In order to implement the foregoing method, an embodiment of the present invention further provides a public safety communication implementation apparatus, where the apparatus is applied to an eNB or a NeNB, and as shown in fig. 7, the apparatus includes: monitoring module 10, judging module 20 and processing module 30, wherein:
the monitoring module 10 is configured to monitor the connection state of S1, and notify the determining module 20 when the connection fault of S1 is monitored;
the judging module 20 is configured to judge whether there is a neighboring IOPS system;
the processing module 30 is configured to join the neighboring IOPS system when the determining module 20 determines that the neighboring IOPS system exists; and is further configured to newly establish an IOPS system when the determining module 20 determines that no adjacent IOPS system exists.
The connection fault of the S1 is as follows: s1 disconnected or S1 limited;
when the apparatus is applied to the eNB, the monitoring module 10 is further configured to determine that the connection failure is S1 when the connection disconnection of S1 is monitored;
when the apparatus is applied to the eNB or the NeNB, the monitoring module is further configured to confirm that the connection failure is S1 when monitoring a notification that the connection of S1 is limited, which is sent by OAM.
As shown in fig. 7, the apparatus further includes: a first interaction module 40, configured to receive a notification message, where the notification message is used to indicate that a neighboring base station has an established IOPS system;
the determining module 20 is further configured to determine whether the first interaction module 40 receives the notification message before monitoring the connection failure of S1, and if the determination result is yes, determine that the neighboring IOPS system exists. When there is an adjacent IOPS system, the determining module 20 is further configured to determine whether the first interaction module 40 receives only one notification message, and if the determination result is yes, determine that there is an adjacent IOPS system, and notify the processing module 30 to join the corresponding adjacent IOPS system.
As shown in fig. 7, the apparatus, when applied to the NeNB, further includes: an initialization module 60, configured to perform an NeNB initialization operation, and notify the determination module 20 to determine whether there is a neighboring IOPS system after the initialization is completed.
The device further comprises: a second interaction module 50, configured to send a request message to all neighboring base stations after monitoring that the connection failure of S1 or after initialization is detected, to request to notify the neighboring base stations whether there is an established IOPS system; the base station is also used for receiving a response message returned by the adjacent base station;
the determining module 20 is further configured to determine whether there is an indication that there is an established IOPS system in the response message, and if at least one indication is an established IOPS system in the determination result, determine that there is an adjacent IOPS system; and if the judgment results indicate that no IOPS system is established, judging that no adjacent IOPS system exists. When there is an adjacent IOPS system, the determining module 20 is further configured to determine whether there is one or more indications in the response message as an established IOPS system, and if the determining result is that there is only one indication as an established IOPS system, or the determining result is that there are multiple indications in all the response messages as an established IOPS system and all indicate that the multiple indications are the same IOPS system, determine that there is an adjacent IOPS system, and notify the processing module 30 to join in the corresponding adjacent IOPS system; if the determination result indicates that there are multiple established IOPS systems and the multiple response messages indicate multiple different IOPS systems, it is determined that there are multiple adjacent IOPS systems, and the processing module 30 is notified to merge the multiple corresponding adjacent IOPS systems and join the merged adjacent IOPS systems, or the processing module 30 is notified to select one of the adjacent IOPS systems.
The processing module 30 is further configured to join the proximity IOPS system, and includes: a local S1 connection is established broadcasting the cell identity and/or PLMN identity and/or TAI specific to the joined neighboring IOPS system.
The processing module 30 is further configured to build a new IOPS system, and includes: establishing a local S1 connection; and sending a synchronization signal special for the newly-built IOPS system, or sending a system broadcast message special for the newly-built IOPS system, wherein the special system broadcast message at least comprises a PLMN identification special for the IOPS system. It should be noted that, when the apparatus is applied to the eNB, the processing module 30 is further configured to automatically create an IOPS system; when the apparatus is applied to the NeNB, the processing module 30 is further configured to establish a new IOPS system under the control of an operator.
The processing module 30 is further configured to notify the UE in the coverage area of the neighboring or newly-established IOPS system after joining the neighboring IOPS system or newly-established IOPS system, and notify the user of the following information through the UE: operating in an IOPS communication mode and/or supporting limited S1 connections and/or supporting only limited local traffic.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (20)
1. A public safety communication implementation method is characterized by comprising the following steps:
when monitoring an S1 connection fault, the base station judges whether an adjacent single-station operation public safety IOPS system exists;
if the adjacent IOPS system exists, the base station joins the adjacent IOPS system;
and if the adjacent IOPS system does not exist, the base station establishes the IOPS system.
2. The public safety communication implementation method of claim 1, wherein the S1 connection failure is: s1 disconnected or S1 limited; the method further comprises the following steps:
when the base station monitors that the connection of S1 is disconnected, the connection is confirmed to be S1 connection failure, wherein the base station is an eNB; alternatively, the first and second electrodes may be,
and when the base station monitors a notification about limited connection of S1 sent by the operation, administration and maintenance OAM, confirming that S1 is a connection fault, wherein the base station is eNB or NeNB.
3. The public safety communication implementation method of claim 1, wherein the determining whether the proximity IOPS system exists comprises:
and the base station judges whether a notification message sent by a neighboring base station of the established IOPS system is received before the connection fault of S1 is monitored, and if so, the base station judges that the neighboring IOPS system exists.
4. The public safety communication implementation method of claim 3, wherein when the proximity IOPS system exists, the method further comprises: and the base station judges whether only one notification message is received or not, if so, judges that one adjacent IOPS system exists and joins the corresponding adjacent IOPS system.
5. The public safety communication realization method of claim 1, further comprising: and after the base station is initialized, judging whether an adjacent IOPS system exists or not, wherein the base station is a NeNB.
6. The public safety communication implementation method of claim 1 or 5, wherein the determining whether the proximity IOPS system exists comprises:
after monitoring that the connection fault of S1 is detected or the base station is initialized, the base station sends a request message to all adjacent base stations to request to inform the adjacent base stations whether an IOPS system is established;
the base station receives a response message returned by the adjacent base station;
the base station judges whether the response message has an indication of an established IOPS system, and if the judgment result is that at least one indication has the established IOPS system, the base station judges that an adjacent IOPS system exists; and if the judgment results indicate that no IOPS system is established, judging that no adjacent IOPS system exists.
7. The public safety communication implementation method of claim 6, wherein when the proximity IOPS system exists, the method further comprises: the base station judges whether one or more indications exist in the response message as the established IOPS system,
if the judgment result is that only one indication is that the IOPS system is established, or the judgment result is that a plurality of indications in all the response messages are that the IOPS system is established and the IOPS systems are the same, judging that one adjacent IOPS system exists and adding the corresponding adjacent IOPS system;
and if the judgment result shows that a plurality of instructions indicate that the IOPS system is established and a plurality of different IOPS systems are indicated, judging that a plurality of adjacent IOPS systems exist, merging the corresponding plurality of adjacent IOPS systems, and adding the merged adjacent IOPS systems or selecting one of the adjacent IOPS systems.
8. The public safety communication implementation method of claim 1, wherein the base station joins the neighboring IOPS system, comprising: the base station establishes a local S1 connection broadcasting the added cell identity and/or public land mobile network PLMN identity and/or tracking area identity TAI specific to the neighboring IOPS system.
9. The method of claim 1, wherein the base station establishes an IOPS system, and the method comprises:
the base station establishes a local S1 connection;
the base station sends a synchronization signal special for the newly-built IOPS system, or sends a system broadcast message special for the newly-built IOPS system, wherein the special system broadcast message at least comprises a PLMN identification special for the IOPS system;
the eNB automatically establishes an IOPS system, and the NeNB establishes the IOPS system under the control of an operator.
10. The method of claim 1, wherein after the base station joins the neighboring IOPS system or the newly-built IOPS system, the method further comprises:
the base station informs the UE in the coverage area and informs the user of the following information through the UE: operating in an IOPS communication mode and/or supporting limited S1 connections and/or supporting only limited local traffic.
11. A public safety communication implementation device is applied to a base station, and comprises: monitoring module, judging module and processing module, wherein:
the monitoring module is used for monitoring the connection state of S1 and informing the judging module when the connection fault of S1 is monitored;
the judging module is used for judging whether an adjacent IOPS system exists or not;
the processing module is used for joining the adjacent IOPS system when the judging module judges that the adjacent IOPS system exists; and the system is also used for newly building the IOPS system when the judging module judges that no adjacent IOPS system exists.
12. The public safety communication implementing device of claim 11, wherein the S1 connection failure is: s1 disconnected or S1 limited;
when the device is applied to the eNB, the monitoring module is further configured to determine that the connection failure is S1 when the disconnection of the S1 is monitored;
when the device is applied to an eNB or a NeNB, the monitoring module is further configured to confirm that the connection failure is S1 when monitoring a notification that the connection of S1 is limited, which is sent by OAM.
13. The public safety communication enabled device of claim 11, further comprising: the system comprises a first interaction module, a second interaction module and a third interaction module, wherein the first interaction module is used for receiving a notification message, and the notification message is used for indicating that an IOPS system is established in a neighboring base station;
the determining module is further configured to determine whether the first interaction module receives the notification message before monitoring the connection failure of S1, and if the determination result is yes, determine that the neighboring IOPS system exists.
14. The public safety communication realization apparatus of claim 13,
the determining module is further configured to determine whether the first interaction module receives only one notification message when there is an adjacent IOPS system, determine that there is an adjacent IOPS system if the first interaction module receives only one notification message, and notify the processing module to join the corresponding adjacent IOPS system.
15. The public safety communication implementation device of claim 11, wherein the device, when applied to a NeNB, further comprises: and the initialization module is used for executing NeNB initialization operation and informing the judgment module to judge whether the adjacent IOPS system exists or not after the initialization is completed.
16. The public safety communication realization apparatus of claim 11 or 15, further comprising: the second interaction module is used for sending a request message to all adjacent base stations after monitoring that the connection failure of S1 or after initialization, and requesting to inform the adjacent base stations whether an IOPS system is established; the base station is also used for receiving a response message returned by the adjacent base station;
the judging module is further configured to judge whether there is an indication that there is an established IOPS system in the response message, and if at least one indication is an established IOPS system, determine that there is an adjacent IOPS system; and if the judgment results indicate that no IOPS system is established, judging that no adjacent IOPS system exists.
17. The public safety communication realization apparatus of claim 16,
the judging module is further configured to judge whether one or more indications exist in the response message as an established IOPS system when the adjacent IOPS systems exist, and judge that one adjacent IOPS system exists and notify the processing module to join the corresponding adjacent IOPS system if only one indication exists as the established IOPS system or all the response messages have multiple indications as the established IOPS systems and all the responses indicate the same IOPS system as the judging result; and if the judgment result shows that a plurality of instructions indicate that the IOPS system is established and the plurality of response messages indicate a plurality of different IOPS systems, judging that a plurality of adjacent IOPS systems exist, informing the processing module to merge the corresponding plurality of adjacent IOPS systems and add the merged adjacent IOPS systems, or informing the processing module to select one of the adjacent IOPS systems.
18. The public safety communication realization apparatus of claim 11,
upon joining a neighboring IOPS system, the processing module is further configured to: a local S1 connection is established broadcasting the cell identity and/or PLMN identity and/or TAI specific to the joined neighboring IOPS system.
19. The public safety communication realization apparatus of claim 11,
when the IOPS system is newly built, the processing module is further used for: establishing a local S1 connection; sending a synchronization signal special for the newly-built IOPS system, or sending a system broadcast message special for the newly-built IOPS system, wherein the special system broadcast message at least comprises a PLMN identification special for the IOPS system;
when the device is applied to the eNB, the processing module is also used for automatically building an IOPS system; when the device is applied to the NeNB, the processing module is also used for newly establishing an IOPS system under the control of an operator.
20. The public safety communication realization apparatus of claim 11,
the processing module is further configured to notify the UE in the coverage area after joining the neighboring IOPS system or newly building the IOPS system, and notify the user of the following information through the UE: operating in an IOPS communication mode and/or supporting limited S1 connections and/or supporting only limited local traffic.
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| PCT/CN2015/092577 WO2016119488A1 (en) | 2015-01-28 | 2015-10-22 | Public safety communication implementation method and apparatus, and storage medium |
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| WO2019088886A1 (en) * | 2017-11-01 | 2019-05-09 | Telefonaktiebolaget Lm Ericsson (Publ) | Group communications during iops |
| CN110121217B (en) * | 2018-02-05 | 2021-10-12 | 中兴通讯股份有限公司 | Networking method of communication system and network architecture |
| CN110719586B (en) * | 2018-07-13 | 2022-06-03 | 成都鼎桥通信技术有限公司 | Service establishing method, device and server |
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