CN102438225B - A kind of processing method and DeNB MME direct information being transmitted to signaling - Google Patents
A kind of processing method and DeNB MME direct information being transmitted to signaling Download PDFInfo
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Abstract
Open a kind of processing method Mobility Management Entity (MME) direct information being transmitted to signaling of the present invention, host base station (DeNB) transmits signaling according to the MME direct information received, judge that the community that different system request is reported comprises at least one RN jurisdiction district, then described DeNB sends signaling obtains wireless access network information from least one RN jurisdiction district described to corresponding RN, then the base station direct information sending the wireless access network information of carrying the report of different system request to MME transmits signaling.The present invention also correspondingly discloses a kind of DeNB, pass through the present invention, different system can when DeNB be consistent with the Base Station Identification of the via node that it is administered, the wireless access network information of smooth acquisition via node jurisdiction district, thus the effective enforcement ensureing load balancing, handover decisions and adjacent area parameter configuration between network.
Description
Technical Field
The present invention relates to the field of mobile communications, and in particular, to a method for processing a Mobility Management Entity (MME) direct information transfer signaling and a DeNB.
Background
The third generation Long Term Evolution (LTE) system for mobile communication is composed of an evolved universal terrestrial radio access network (E-UTRAN), User Equipment (UE), and an Evolved Packet Core (EPC). Wherein the E-UTRAN consists of enhanced base stations (eNBs) that access network elements. The eNB is connected to the terminal UE through a Uu interface, and is connected to a core network element, such as a Mobility Management Entity (MME), through an S1 interface.
To meet the increasing demand for high-speed mobile access with large bandwidth, the third generation partnership project (3 GPP) introduced the Long-term evolution-Advanced (LTE-Advanced) standard. The LTE-Advanced reserves the core of LTE for the evolution of an LTE system, and on the basis, a series of technologies are adopted to expand a frequency domain and a space domain so as to achieve the purposes of improving the utilization rate of frequency spectrum, increasing the system capacity and the like. A radio Relay (Relay) technology is one of the LTE-Advanced technologies, and aims to expand the coverage area of a cell, reduce dead-angle areas in communication, balance loads, transfer services in hot spot areas, and save the transmission power of a UE.
Fig. 1 is a schematic diagram of a system structure adopting a wireless relay technology in the prior art, and as shown in fig. 1, a Relay Node (RN) is connected with a UE through a Uu interface to provide a function of a base station. In addition, the RN is connected to the base station through a Un interface, providing the functions of the UE. The base station connected to the RN is called a donor base station (DeNB), and the DeNB is connected to a core network element (e.g., MME) through an S1 interface. The RN maintains a connection with a core network element (e.g., MME) through a DeNB proxy (proxy). Therefore, the relay function of data transmission between the RN and the base station and between the RN and the UE managed by the RN is realized, and the purposes of expanding the coverage area of a cell, reducing dead corner areas in communication, balancing load, transferring services of hot spot areas, saving the transmitting power of the UE and the like are achieved.
In order to implement the relay function, after establishing Radio Resource Control (RRC) connection in a cell under the jurisdiction of the DeNB, the RN needs to establish a Data Radio Bearer (DRB) for downloading necessary parameters, such as configuration information of the cell under the jurisdiction of the RN, from an Operation and Maintenance (O & M) server, transmitting interface signaling of S1 and X2 of the UE in the cell under the jurisdiction of the RN, and transmitting data of the UE in the cell under the jurisdiction of the RN, and the like.
After the RN is introduced into the network, a cell under the jurisdiction of the RN may have an adjacent relationship with cells of other different systems (such as a GERAN system or a WCDMA system), and the other different systems may switch some UEs in a connected state to the cell under the jurisdiction of the RN in view of load balancing. Before load balancing is implemented, the heterogeneous system needs to first obtain load information of a cell managed by the RN. In the existing protocol, the heterogeneous system obtains the load information of the LTE cell through an RIM (radio access network information) flow.
In the RIM process, a network element initiating to acquire radio access network information of other systems is called a control base station system (ControllingBSS), a network element providing the radio access network information is called a serving base station system (ServingBSS), and the control base station system and the serving base station system need to support a Base Station Subsystem GPRS Protocol (BSSGP). The control base station system sends a data packet (RIMINFORMATION REQUEST PDU) of a RIM information request to the service base station system through the core network, and the request PDU comprises a RIM container (RIMContainer) and RIM routing information (RIMRoutingInformation). In the RIM container, RIM application layer identification (rimappticationidentity), application layer container (appticationcontainer), and RIM serial number (rimsequence number) are contained. The RIM application layer identifier includes information content of a cell to be acquired, such as a SONTransfer, systemlnformation, MBMSdatachannel, and the like (information content of the cell to be acquired), where the SONTransfer refers to information (CellLoadReporting) including cell load to be acquired; the application layer container contains the cell identifier that needs to be obtained, or the cell identifier that needs to be reported, or the cell identifier that requests Reporting (Reporting means that the serving bss returns to the controlling bss). The RIM routing information includes an identifier of a source cell (SourceCellIdentifier) and an identifier of a target cell (DestinationCellIdentifier).
It should be noted that, if the BSS is in the GERAN system, the identifier (SourceCellIdentifier or DestinationCellIdentifier) of the source or target cell is the identifier of the cell governed by the BSS; if the cell is the RNC in the WCDMA system, the identification (sourceCellIdentifier or DestinationCellIdentifier) of the source cell or the target cell refers to the identification of the RNC; in case of an eNB in an LTE system, the identity of the source or target cell (SourceCellIdentifier or DestinationCellIdentifier) is eNU identity in LTE (not referring to the identity of the cell under the jurisdiction of the eNB here). The existing protocol uniformly adopts the source cell identifier and the target cell identifier when defining the routing information, because the routing is carried out by using the cell in the GERAN system, and after the WCDMA system and the LTE system are introduced, the meanings of the source cell identifier (SourceCellIdentifier) and the target cell identifier (DestinationCellIdentifier) are changed due to the difference of the routing information (in the WCDMA system, the RNC is used for identifying the routing; in the LTE, the eU is used for identifying the routing).
After the RN introduces the LTE system, the base station identification (eNBID) of the RN is the same as the base station identification of the DeNB accessed by the RN. If the BSS or RNC hopes to acquire the information of the cell under the control of the RN managed by the DeNB, according to the existing S1 protocol, the MME direct information transfer signaling sent by the BSS or RNC through the core network is terminated at the DeNB, because the routing information of the S1 signaling adopts the base station identifier, and the base station identifiers of the DeNB and the RN are the same, the MME direct information transfer signaling cannot reach the RN, and in addition, because the DeNB does not have the information of the cell under the control of the RN, the DeNB cannot directly return the information of the cell under the control of the RN to the BSS or RNC of a different system. Therefore, the heterogeneous system cannot obtain the information of the cell governed by the RN, which results in that the load balancing or the switching decision between networks cannot be effectively implemented.
Disclosure of Invention
In view of this, the main objective of the present invention is to provide a method for processing an MME direct information transfer signaling and a DeNB, where the DeNB can successfully return information of a cell served by an RN to an inter-system according to the MME direct information transfer signaling, so as to ensure effective implementation of load balancing, handover decision and neighboring cell parameter configuration between networks.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a method for processing direct information transfer signaling of a Mobility Management Entity (MME) comprises the following steps:
a host base station DeNB receives an MME direct information transfer signaling, wherein the MME direct information transfer signaling carries a cell identifier of a different system request report and radio access network information of the different system request report;
and the DeNB judges that the cell of the inter-system request report contains at least one cell governed by the RN according to the received MME direct information transfer signaling, sends the signaling to obtain the radio access network information of the cell governed by the RN from the corresponding RN, and sends the base station direct information transfer signaling carrying the radio access network information of the inter-system request report to the MME.
The signaling for the DeNB to acquire the radio access network information from the RN further carries an indication of a periodic report and/or an event-triggered reporting mechanism, wherein the indication of the periodic report gives a time interval of the periodic report, and the event-triggered reporting mechanism gives a condition for triggering the report.
After the DeNB determines that the cell requested to be reported by the different system includes at least one cell governed by the RN according to the received MME direct information transfer signaling, the method further includes:
the DeNB further judges whether the radio access network information of the cell under the jurisdiction of the at least one RN, which is reported by the different system request, is stored in the DeNB, and then the DeNB directly sends a base station direct information transfer signaling carrying the radio access network information of the different system request report to an MME.
The radio access network information comprises one or more of: cell load information, partial or full cell system messages, MBMS data channel information.
And the DeNB and the RN adopt RRC signaling, S1 signaling, X2 signaling or DRB communication.
When the signaling sent by the DeNB to the RN for acquiring the radio access network information of the cell dominated by the RN is an MME direct information transfer signaling, the method further comprises the following steps: and the DeNB modifies the RIM sequence number contained in the MME direct information transfer signaling.
When a DeNB receives a plurality of direct information transfer signaling aiming at the same RN or cells managed by the same RN, the DeNB sends a signaling for acquiring the information of the radio access network to the RN.
A DeNB, comprising: the device comprises a receiving unit, a judging unit, a wireless access network information acquiring unit and a sending unit; wherein,
the receiving unit is configured to receive an MME direct information transfer signaling, where the MME direct information transfer signaling carries a cell identifier of a different system request report and radio access network information of the different system request report;
the judging unit is used for judging whether the cell of the different system request report contains at least one cell governed by the RN according to the MME direct information transfer signaling received by the receiving unit, and informing the judging result to the wireless access network information acquisition unit when judging that the cell of the different system request report contains at least one cell governed by the RN;
the radio access network information acquisition unit is used for sending a signaling to acquire the radio access network information of the cell managed by the at least one RN from the corresponding RN according to the notification of the judgment unit;
and the sending unit is used for sending a base station direct information transfer signaling carrying the wireless access network information of the inter-system request report to the MME according to the wireless access network information of the cell dominated by the at least one RN, which is acquired by the wireless access network information acquisition unit.
The signaling for the DeNB to acquire the radio access network information from the RN further carries an indication of a periodic report and/or an event-triggered reporting mechanism, wherein the indication of the periodic report gives a time interval of the periodic report, and the event-triggered reporting mechanism gives a condition for triggering the report.
The judging unit is further configured to, when it is judged that the cell of the inter-system request report includes a cell under the jurisdiction of at least one RN, further judge whether the DeNB stores radio access network information of the cell under the jurisdiction of the at least one RN of the inter-system request report, and when it is judged that the DeNB itself stores the radio access network information of the cell under the jurisdiction of the at least one RN of the inter-system request report, notify the judging result to the transmitting unit;
the sending unit is further configured to directly send a base station direct information transfer signaling carrying the radio access network information of the inter-system request report to the MME according to the notification of the determining unit.
The radio access network information comprises one or more of: cell load information, partial or full cell system messages, MBMS data channel information.
And the DeNB and the RN adopt RRC signaling, S1 signaling, X2 signaling or DRB communication.
The DeNB further includes a modifying unit, configured to modify an RIM sequence number included in the MME direct information transfer signaling when the signaling sent to the RN by the radio access network information obtaining unit is the MME direct information transfer signaling.
And the sending unit is also used for sending a signaling for acquiring the information of the wireless access network to the RN when the receiving unit receives a plurality of direct information transfer signaling aiming at the MME of the same RN or the cell under the control of the same RN.
The invention relates to a processing method of an MME direct information transfer signaling and a DeNB, wherein the DeNB acquires a cell identifier of a request report of a different system as a cell managed by a relay node according to the MME direct information transfer signaling, and then actively acquires radio access network information of the relay node from the relay node. By the method and the system, the different system can smoothly obtain the radio access network information of the cell under the jurisdiction of the relay node under the condition that the DeNB is consistent with the base station identifier of the relay node under the jurisdiction, thereby ensuring the effective implementation of load balance, switching decision and adjacent cell parameter configuration among networks.
Drawings
Fig. 1 is a schematic diagram of a system structure using wireless relay technology in the prior art;
fig. 2 is a flowchart illustrating a processing method for directly transferring signaling to an MME according to an embodiment of the present invention;
fig. 3 is a flowchart illustrating a processing method for directly transferring signaling to an MME according to embodiment 1 of the present invention;
fig. 4 is a flowchart illustrating a processing method for directly transferring signaling to an MME in embodiment 2 of the present invention;
fig. 5 is a flowchart illustrating a method for processing direct information transfer signaling of an MME according to embodiment 3 of the present invention;
fig. 6 is a flowchart illustrating a method for processing direct information transfer signaling of an MME according to embodiment 4 of the present invention.
Detailed Description
The basic idea of the invention is: and when the DeNB acquires that the cell identifier of the request report of the different system is the cell under the control of the relay node according to the MME direct information transfer signaling, the DeNB actively acquires the radio access network information of the relay node from the relay node.
Fig. 2 is a flowchart illustrating a method for processing direct information transfer signaling of an MME according to an embodiment of the present invention, and as shown in fig. 2, the method includes:
step 201: the DeNB receives MME direct information transfer signaling.
MME direct information transfer signaling generally includes: cell identification of the inter-system request report, radio access network information (RANInformation) of the inter-system request report. The radio access network information typically includes one or more of: cell load information, cell system messages (partial or full), MBMS data channel information.
It should be noted that the radio access network information described in the present invention is cell information.
Step 202: and the DeNB judges that the cell requested to be reported by the different system comprises at least one cell governed by the RN according to the received MME direct information transfer signaling.
Of course, the cell requested to be reported by the system may also include the cell governed by the DeNB.
Step 203: the DeNB judges whether the radio access network information of the cell dominated by the at least one RN requested to be reported by the different system is stored, if so, the step is switched to step 205; otherwise, go to step 204.
It should be noted that step 203 is optional, and if the DeNB has the capability of storing the cell information of the cell governed by the RN, the DeNB needs to ensure that the cell information is up-to-date, which needs an additional mechanism to ensure. And when the DeNB does not store the cell information of the cell under the control of the RN or the stored cell information of the cell under the control of the RN is not the latest information, the DeNB skips the step 203 and directly executes the step 204.
Step 204: and the DeNB acquires the radio access network information of the cell managed by the at least one RN from the corresponding RN.
Here, the DeNB sends a signaling for acquiring the radio access network information to the corresponding RN, and carries the cell identifier to be acquired and the radio access network information to be acquired; and the RN returns the wireless access network information according to the acquired signaling.
It should be noted that, if the RN belongs to only one cell, the signaling for acquiring the cell information sent by the DeNB to the corresponding RN only needs to carry the cell information to be acquired.
In the invention, the DeNB and the RN can communicate by adopting RRC signaling, S1 signaling or X2 signaling, and can also communicate by DRB established between the DeNB and the RN.
Step 205: and the DeNB sends a base station direct information transfer signaling to the MME, and carries the radio access network information of the request report of the different system, wherein the radio access network information of the cell governed by the at least one RN is contained.
It should be noted that the signaling that the DeNB acquires the radio access network information from the RN may further include an indication of a periodic report and/or an event-triggered reporting mechanism, where the indication of the periodic report gives a time interval of the periodic report, and the event-triggered reporting mechanism gives a condition for triggering the report, for example, when the radio access network information changes, the RN sends a signaling carrying the changed radio access network information to the DeNB.
It should be noted that, when the signaling sent by the DeNB to the RN to acquire the radio access network information of the cell under the jurisdiction of the RN is an MME direct information transfer signaling, the method further includes: and the DeNB modifies the RIM sequence number contained in the MME direct information transfer signaling.
It should be noted that, when the DeNB receives multiple direct information transfer signaling for the MME of the same RN or a cell served by the same RN, the DeNB sends a signaling for acquiring the radio access network information to the RN.
The invention also proposes a DeNB comprising: the device comprises a receiving unit, a judging unit, a wireless access network information acquiring unit and a sending unit; wherein,
the receiving unit is configured to receive an MME direct information transfer signaling, where the MME direct information transfer signaling carries a cell identifier of a different system request report and radio access network information of the different system request report;
the judging unit is used for judging whether the cell of the different system request report contains at least one cell governed by the RN according to the MME direct information transfer signaling received by the receiving unit, and informing the judging result to the wireless access network information acquisition unit when judging that the cell of the different system request report contains at least one cell governed by the RN;
the radio access network information acquisition unit is used for sending a signaling to acquire the radio access network information of the cell managed by the at least one RN from the corresponding RN according to the notification of the judgment unit;
and the sending unit is used for sending a base station direct information transfer signaling carrying the wireless access network information of the inter-system request report to the MME according to the wireless access network information of the cell dominated by the at least one RN, which is acquired by the wireless access network information acquisition unit.
The signaling for the DeNB to acquire the radio access network information from the RN further carries an indication of a periodic report and/or an event-triggered reporting mechanism, wherein the indication of the periodic report gives a time interval of the periodic report, and the event-triggered reporting mechanism gives a condition for triggering the report.
The judging unit is further configured to, when it is judged that the cell of the inter-system request report includes a cell under the jurisdiction of at least one RN, further judge whether the DeNB stores radio access network information of the cell under the jurisdiction of the at least one RN of the inter-system request report, and when it is judged that the DeNB itself stores the radio access network information of the cell under the jurisdiction of the at least one RN of the inter-system request report, notify the judging result to the transmitting unit;
the sending unit is further configured to directly send a base station direct information transfer signaling carrying the radio access network information of the inter-system request report to the MME according to the notification of the determining unit.
The radio access network information comprises one or more of: cell load information, partial or full cell system messages, MBMS data channel information.
And the DeNB and the RN adopt RRC signaling, S1 signaling, X2 signaling or DRB communication.
The DeNB further includes a modifying unit, configured to modify an RIM sequence number included in the MME direct information transfer signaling when the signaling sent to the RN by the radio access network information obtaining unit is the MME direct information transfer signaling.
And the sending unit is also used for sending a signaling for acquiring the information of the wireless access network to the RN when the receiving unit receives a plurality of direct information transfer signaling aiming at the MME of the same RN or the cell under the control of the same RN.
The following describes the implementation of the technical solution in further detail with reference to specific embodiments. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
Example 1
In this embodiment, a BSS or an RNC sends a rimnformationrequest pdu to a ServingBSS through a core network, fig. 3 is a schematic flow chart of a processing method for directly transmitting an information transmission signaling to an MME in embodiment 1 of the present invention, and as shown in fig. 3, the method includes:
step 301: after receiving the RIMINFORMATION REQUEST PDU from the heterogeneous system, the MME sends an MME direct information transfer (MMEDirectionTransfer) signaling to the DeNB according to the routing information in the RIMINFORMATION REQUEST PDU, wherein the direct information transfer signaling comprises the RIMINFORMATION REQUEST PDU.
Step 302: and after receiving the MME direct information transfer signaling, the DeNB analyzes the RIMINFORMATION REQUESTPDU contained in the signaling. Here, the DeNB obtains the Cell identifier (ReportingCellIdentifier) of the inter-system request report, which is the identifier of the Cell under the jurisdiction of RN1 (RN _ Cell1) in this embodiment. The DeNB simultaneously learns that the radio access network information required to be learned by the different system is a cell load report, that is, the son transfer includes information (CellLoadReporting) for acquiring a cell load. Since DeNB does not have the load information of RN _ Cell1, DeNB sends signaling to RN1 to acquire Cell load or signaling to request Cell load. Here, RN1 is a relay node governed by DeNB.
Step 303: after receiving the signaling for acquiring the cell load or the signaling for requesting the cell load sent by the DeNB, the RN1 obtains the load information of the cell through measurement and returns the signaling carrying the cell load to the DeNB. The method for RN1 to obtain the load information of this cell belongs to the prior art, and is not described herein.
Step 304: after receiving the Cell load-carrying signaling returned by RN1, DeNB generates a RANINFORMATIONPDU, which includes the load information of RN _ Cell 1. The DeNB sends a base station direct information transfer (enbdirectinformation transfer) to the MME, which contains the RANINFORMATIONPDU.
After receiving the direct information transfer from the base station, the MME sends a signaling carrying the load information of RN _ Cell1 to the BSS or RNC through the core network of the inter-system. So far, the BSS or RNC of the heterogeneous system can obtain the load information of the RN _ Cell1 and apply it to load balancing or handover decision, and if the load of the RN _ Cell1 is light, the BSS or RNC of the heterogeneous system can handover some connected UEs to the RN _ Cell1 to reduce the load of the Cell of the system.
In this embodiment, the BSS or RNC of the different system acquires the load information of the relay node cell through the RIM procedure, and if the BSS or RNC of the different system desires to acquire information of the relay node cell, such as a system message or an MBMS data channel (MBMS data channel), the procedure shown in fig. 3 is also applicable.
Since there are RRC connection, S1 interface and X2 interface between DeNB and RN managed by DeNB, the signaling adopted in step 302 and step 303 of this embodiment may be RRC signaling, S1 signaling or X2 signaling. Since DRBs are established between the DeNB and the RN for UE data transmission, steps 302 and 303 may also be performed through DRBs transmission between the DeNB and the RN, and only signaling for acquiring cell load needs to be encapsulated in a data packet. Specifically, if the information of the Cell load of the relay node is acquired by using the X2 signaling, the information can be acquired through a resource status request flow provided by the existing protocol, the DeNB sends a resource status request (resource status request) to the RN1, after the RN1 simultaneously returns a resource status response (resource status request) to the DeNB when measuring the Cell load, and after the RN1 obtains the Cell load, the RN1 sends a resource status update (resource status update) signaling to the DeNB to notify the load information of the RN _ Cell 1.
In particular, if the DeNB has obtained the latest RN1 cell load information after receiving the MME direct information transfer signaling, the cell load information of the RN1 may be directly returned to the MM/E.
Example 2
In this embodiment, the neighboring LTE Cell of the Cell governed by the BSS or the RNC is the Cell governed by the relay node, the Cell is represented by RN _ Cell1, and the relay node is represented by RN 1. A BSS or an RNC needs to send a rimnformationrequest pdu to a ServingBSS through a core network, fig. 4 is a schematic flow chart of a processing method for directly signaling information transfer to an MME in embodiment 2 of the present invention, and as shown in fig. 4, the method includes:
step 401: the MME receives RIMINFORMATION REQUEST PDU sent by the heterogeneous system, and sends an MME direct information transfer (MMEDirectinformation transfer) signaling to the DeNB according to the routing information in the RIMINFORMATION REQUEST PDU. The direct messaging signaling includes a rimnformationrequest pdu.
Step 402: after receiving the direct information transfer signaling, the DeNB parses the RIMINFORMATION REQUESTPDU contained in the signaling. The DeNB obtains the Cell identity (ReportingCellIdentifier) of the inter-system request report, here the identity of RN _ Cell 1. And the DeNB simultaneously acquires that the information of the radio access network required to be acquired by the different system is a cell system message. Since DeNB does not have the system message of RN _ Cell1, DeNB sends signaling to RN1 to acquire the Cell system message. In this embodiment, the report type set by the DeNB discovery inter-system is multiple reports (multiple report), so the DeNB includes an indication of a periodic report in a signaling for sending a message for acquiring a cell system to the RN1, such as setting a time interval of the periodic report.
Step 403: after receiving the signaling for acquiring the Cell system message sent by the DeNB, the RN1 returns the signaling carrying the Cell system message of RN _ Cell1 to the DeNB, and starts a timer for periodic reporting.
Step 404: after receiving the signaling carrying the Cell system message returned by RN1, DeNB generates a raninformation pdu, which contains the system message of RN _ Cell 1. The DeNB sends a base station direct information transfer (enbdirectinformation transfer) to the MME, which contains the RANINFORMATIONPDU.
When the periodically reported time interval times out (Expired), RN1 needs to send signaling carrying the RN _ Cell1 Cell system message to DeNB again (possibly the system information of the Cell has been updated); the DeNB needs to send base station direct information transfer (enbdirectinformatictransferrrenfer) to the MME, carrying the system information of RN _ Cell1 at this time. The RN1 needs to restart the timer for periodic reporting after sending signaling carrying the RN _ Cell1 Cell system message to the DeNB again.
In this embodiment, in step 402, the DeNB sends the signaling for acquiring the Cell system message to the RN1, where the signaling includes an indication of a periodic report, and the DeNB may also set an event-triggered reporting mechanism, for example, when setting that the RN _ Cell1 system message is changed, the RN1 needs to send a signaling carrying the changed RN _ Cell1 Cell system message to the DeNB. When the system message of the RN _ Cell1 is not changed, the signaling carrying the system message of the RN _ Cell1 Cell is not required to be sent, so that the signaling overhead can be reduced.
In this embodiment, the DeNB may acquire all system messages from the RN1, or may acquire part of the system messages. If the DeNB learns that the radio access network information which the heterogeneous system needs to learn is a partial system message of the cell in step 402, the DeNB only needs to acquire the partial system message from RN 1.
After receiving the base station direct information transfer signaling, the MME sends a signaling carrying the system message of RN _ Cell1 to the BSS or RNC through the core network of the inter-system. The BSS or the RNC applies the BSS or the RNC to the neighbor cell parameter configuration of the cell.
Example 3
In this embodiment, a BSS or an RNC sends a rimnformationrequest pdu to a ServingBSS through a core network, fig. 5 is a schematic flow chart of a processing method for directly signaling information transfer to an MME according to embodiment 3 of the present invention, and as shown in fig. 5, the method includes:
step 501: the MME receives RIMINFORMATION REQUEST PDU sent by the heterogeneous system, and sends an MME direct information transfer (MMEDirectinformation transfer) signaling to the DeNB according to the routing information in the RIMINFORMATION REQUEST PDU. The direct messaging signaling includes a rimnformationrequest pdu.
Step 502: after receiving direct information transfer from the MME, the DeNB discovers that the BSS or the RNC needs to acquire load information of multiple cells, where the multiple cells include a Cell (Serving _ Cell1 in this embodiment) governed by the DeNB and a Cell (including cells governed by RN1 and RN 2) governed by a relay node under the management of the DeNB, and then the DeNB sends a signaling for acquiring a Cell load to RN1 and RN2, respectively.
Step 503: after receiving the signaling for acquiring the cell load sent by the DeNB, the RNs 1 and 2 obtain the load information of the cell through measurement, and respectively return the signaling carrying the cell load to the DeNB.
The method for acquiring the load information of the cell by the RN belongs to the prior art, and is not described herein.
Step 504: after receiving the return signaling of RN1 and RN2, DeNB generates a RANINFORMATIONPDU, which includes cell load information of each of the cells served by RN1 and RN2 and ServingCell 1. The DeNB sends a base station direct information transfer (enbdirectinformation transfer) to the MME, which contains the RANINFORMATIONPDU. After receiving the direct information transfer of the base station, the MME sends a signaling carrying the load information of each cell of the RN1, the cell managed by the RN2 and the ServingCell1 to the BSS or the RNC through a core network of the heterogeneous system. The BSS or RNC of the heterogeneous system obtains the load information of the LTE system cell, and can apply it to load balancing or handover decision.
Example 4
In order to realize load balancing or switching between networks, a BSS of a GERAN system or an RNC of a WCDMA system needs to obtain information of an adjacent LTE cell of a cell governed by the BSS or the RNC, such as load information or cell system information, through an RIM procedure. In this embodiment, the neighboring LTE Cell of the Cell governed by the BSS or the RNC is the Cell governed by the relay node, the Cell is represented by RN _ Cell1, and the relay node is represented by RN 1.
A BSS or an RNC sends a rimnformationrequest pdu to a ServingBSS through a core network, fig. 6 is a schematic flow chart of a processing method for directly transmitting an information transmission signaling to an MME in embodiment 4 of the present invention, and as shown in fig. 6, the method includes:
step 601, the MME receives the rimnformationrequest pdu from the heterogeneous system, and sends an MME direct information transfer (mmedinformationtransfer) signaling to the DeNB according to the routing information therein. The direct messaging signaling includes a rimnformationrequest pdu.
Step 602: after receiving the direct information transfer signaling, the DeNB parses the RIMINFORMATION REQUESTPDU contained in the signaling. The DeNB obtains the Cell identity (ReportingCellIdentifier) of the inter-system request report, here the identity of RN _ Cell 1. The DeNB simultaneously learns that the radio access network information required to be learned by the different system is a cell load report, that is, the son transfer includes information (CellLoadReporting) for acquiring a cell load. After the DeNB obtains the cell identifier of the request report, reorganizing the rimnformationrequest pdu, and sending a signaling carrying the rimnformationrequest pdu to RN1 through an interface between the DeNB and RN1, where the signaling may be an MME direct information transfer signaling. In this case, DeNB represents a proxy (proxy) function of BSSGP in the process. In this step, DeNB needs to save some or all information in the rimnformationrequest pdu in order to be able to check whether RN1 returns signaling accurately or not.
Step 603: after receiving the signaling carrying the rimnformationrequest pdu, RN1 parses the rimnformationrequest pdu contained in the signaling, and knows that the heterogeneous system needs to obtain the Cell load information of RN _ Cell 1. RN1 calculates RN _ Cell1 Cell load information, and generates RANINFORMATION PDU, which contains the load information of RN _ Cell 1. The RN1 sends signaling carrying the RANINFORMATIONPDU, which may be base station direct information transfer signaling, to the DeNB.
Step 604: the DeNB receives the signaling carrying the RANINFORMATIONPDU from the RN1, and sends a base station direct information transfer (eNBirectinformaticTransfer) to the MME, wherein the RANINFORMATIONPDU is contained in the signaling.
After receiving the direct information transfer from the base station, the MME sends a signaling carrying the load information of RN _ Cell1 to the BSS or RNC through the core network of the inter-system. So far, the BSS or RNC of the heterogeneous system obtains the load information of the RN _ Cell1, and can apply it to load balancing or handover decision.
In step 602, the DeNB may further send signaling carrying rimnformationrequest pdu to RN1 through RRC, S1, or X2, and accordingly, in step 603, the signaling carrying the load information of RN _ Cell1 returned by RN1 to the DeNB is RRC, S1, or X2 signaling.
If the DeNB receives the direct information transfer signaling in step 602, after parsing out the signaling, it learns that the Cell identifier reported by the request of the heterogeneous system includes multiple cells (e.g., RN _ Cell1 and RN _ Cell2), the DeNB needs to generate a rimnformationrequest pdu sent to different relay nodes, and after obtaining Cell load information (including load information of each Cell of RN _ Cell1 and RN _ Cell2) returned by different relay nodes, the DeNB generates an aggregated RANINFORMATIONPDU, which includes load information of each Cell of RN _ Cell1 and RN _ Cell 2. And then sending base station direct information transfer signaling carrying the converged RANINFORMATION PDU to the MME.
In this embodiment, after the BSS or RNC of the heterogeneous system obtains the load INFORMATION of RN _ Cell1, a confirmed data packet (RAN-INFORMATION-ack pdu) may be sent to RN1, where the data packet is also sent to the DeNB through the MME direct INFORMATION transfer signaling, and the DeNB needs to determine that the confirmed data packet is sent to RN1 according to the INFORMATION stored in step 602, and then sends the MME direct INFORMATION transfer signaling to RN 1. Or the DeNB returns an acknowledgement packet (RAN-INFORMATION-ack pdu) to the RN1 immediately after receiving the base station direct INFORMATION transfer signaling from the RN1 in step 604; and when the DeNB receives the acknowledgement data packet returned by the different system, the DeNB directly discards the acknowledgement data packet.
EXAMPLE five
In this embodiment, the BSS and the RNC respectively send a rimnformationrequest pdu to the ServingBSS through the core network, and after the DeNB respectively receives direct information transfer from the MME, the DeNB finds that both the BSS and the RNC need to acquire load information of a cell governed by the RN1, where the RN1 is a relay node governed by the DeNB. DeNB sends a signaling for acquiring cell load to RN1, and after receiving the return signaling of RN1, generates RANINFORMATION PDUs (two copies) which need to return to BSS and RNC, wherein both contain cell load information of the cell governed by RN 1. The DeNB sends two base station direct information transfers (enbdirectinformatictransfer) to the MME, where the routing information for one time is for the BSS and the routing information for the other time is for the RNC. And after receiving the direct information transmission of the base station, the MME sends signaling carrying the load information of the cell managed by the RN1 to the BSS and the RNC respectively through the core network of the different system according to the routing information. The BSS and RNC of the heterogeneous system obtain the load information of the LTE system cell, and can apply it to load balancing or handover decision.
In this embodiment, the RIM sequence numbers (RIM sequence numbers) in the RIM format request pdu sent by the BSS and the RNC may be the same or different. Because the DeNB only sends a signaling for acquiring the cell load to RN1, if the DeNB reuses the existing MME direct information transfer signaling to acquire the signaling for the cell load, the DeNB may use the RIM sequence number in the RIM format request pdu sent by the BSS, may also use the RIM sequence number in the RIM format request pdu sent by the RNC, or the DeNB may set the RIM sequence number in the RIM format request pdu sent to RN1 by itself. When the DeNB receives the ranInformationPDU returned by the RN1 and needs to send the ranInformationPDU to the RNC and the BSS, the DeNB needs to set a corresponding sequence number according to the RIM sequence numbers in the request PDUs sent by the RNC and the BSS respectively.
It will be understood by those skilled in the art that all or part of the steps of the above methods may be implemented by instructing the relevant hardware through a program, and the program may be stored in a computer readable storage medium, such as a read-only memory, a magnetic or optical disk, and the like. Alternatively, all or part of the steps of the above embodiments may be implemented using one or more integrated circuits. Accordingly, each module/unit in the above embodiments may be implemented in the form of hardware, and may also be implemented in the form of a software functional module. The present invention is not limited to any specific form of combination of hardware and software.
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 (14)
1. A method for processing direct information transfer signaling of a Mobility Management Entity (MME) is characterized by comprising the following steps:
a host base station DeNB receives an MME direct information transfer signaling, wherein the MME direct information transfer signaling carries a cell identifier of a different system request report and radio access network information of the different system request report;
and the DeNB judges that the cell of the inter-system request report contains a cell dominated by at least one Relay Node (RN) according to the received MME direct information transfer signaling, sends a signaling to obtain the radio access network information of the cell dominated by the at least one RN from the corresponding RN, and then sends a base station direct information transfer signaling carrying the radio access network information of the inter-system request report to the MME.
2. The method of claim 1, wherein the signaling for the DeNB to acquire the radio access network information from the RN further carries an indication of a periodic report giving a time interval of the periodic report and/or an event-triggered reporting mechanism giving a condition for triggering the report.
3. The method of claim 1, wherein the DeNB determines that the cell requested to be reported by the different system includes at least one cell governed by the RN according to the received MME direct information transfer signaling, and further comprising:
the DeNB further judges whether the radio access network information of the cell under the jurisdiction of the at least one RN, which is reported by the different system request, is stored in the DeNB, and then the DeNB directly sends a base station direct information transfer signaling carrying the radio access network information of the different system request report to an MME.
4. The method according to any one of claims 1 to 3,
the radio access network information comprises one or more of: cell load information, partial or full cell system messages, MBMS data channel information.
5. The method according to any of claims 1 to 3, wherein the DeNB communicates with the RN using RRC signaling, S1 signaling, X2 signaling or a Data Radio Bearer (DRB).
6. The method according to any one of claims 1 to 3, wherein when the signaling sent by the DeNB to the RN to acquire the radio access network information of the cell served by the RN is an MME direct information transfer signaling, the method further comprises: and the DeNB modifies a radio access network information management (RIM) serial number contained in the MME direct information transfer signaling.
7. The method according to any of claims 1 to 3, wherein when a DeNB receives multiple direct information transfer signaling messages for MME in the same RN or cells served by the same RN, the DeNB sends a signaling for acquiring radio access network information to the RN.
8. A donor base station DeNB, comprising: the device comprises a receiving unit, a judging unit, a wireless access network information acquiring unit and a sending unit; wherein,
the receiving unit is configured to receive a direct information transfer signaling of a mobility management entity MME, where the direct information transfer signaling of the MME carries a cell identifier of a different system request report and radio access network information of the different system request report;
the judging unit is used for judging whether the cell of the different system request report contains a cell dominated by at least one Relay Node (RN) according to the MME direct information transfer signaling received by the receiving unit, and informing the judging result to the wireless access network information acquisition unit when judging that the cell of the different system request report contains the cell dominated by at least one RN;
the radio access network information acquisition unit is used for sending a signaling to acquire the radio access network information of the cell managed by the at least one RN from the corresponding RN according to the notification of the judgment unit;
and the sending unit is used for sending a base station direct information transfer signaling carrying the wireless access network information of the inter-system request report to the MME according to the wireless access network information of the cell dominated by the at least one RN, which is acquired by the wireless access network information acquisition unit.
9. The DeNB of claim 8,
the signaling for the DeNB to acquire the radio access network information from the RN further carries an indication of a periodic report and/or an event-triggered reporting mechanism, wherein the indication of the periodic report gives a time interval of the periodic report, and the event-triggered reporting mechanism gives a condition for triggering the report.
10. The DeNB of claim 8,
the judging unit is further configured to, when it is judged that the cell of the inter-system request report includes a cell under the jurisdiction of at least one RN, further judge whether the DeNB stores radio access network information of the cell under the jurisdiction of the at least one RN of the inter-system request report, and when it is judged that the DeNB itself stores the radio access network information of the cell under the jurisdiction of the at least one RN of the inter-system request report, notify the judging result to the transmitting unit;
the sending unit is further configured to directly send a base station direct information transfer signaling carrying the radio access network information of the inter-system request report to the MME according to the notification of the determining unit.
11. The DeNB according to any one of claims 8 to 10,
the radio access network information comprises one or more of: cell load information, partial or full cell system messages, MBMS data channel information.
12. The DeNB according to any one of claims 8 to 10, wherein the DeNB communicates with the RN using RRC signaling, S1 signaling, X2 signaling or a Data Radio Bearer (DRB).
13. The DeNB according to any of claims 8 to 10, further comprising a modifying unit, configured to modify a radio access network information management (RIM) sequence number included in the MME direct information transfer signaling when the signaling sent by the radio access network information obtaining unit to the RN is the MME direct information transfer signaling.
14. The DeNB according to any of claims 8 to 10, wherein the sending unit is further configured to send a signaling for acquiring radio access network information to the RN when the receiving unit receives multiple MME direct information transfer signaling for the same RN or a cell served by the same RN.
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| CN201010501851.6A CN102438225B (en) | 2010-09-29 | 2010-09-29 | A kind of processing method and DeNB MME direct information being transmitted to signaling |
| PCT/CN2011/077671 WO2012041118A1 (en) | 2010-09-29 | 2011-07-27 | Method and denb for processing mme direct information transfer signals |
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| US10142879B2 (en) * | 2013-02-20 | 2018-11-27 | Lg Electronics Inc. | Method and apparatus for transmitting cell load information in wireless communication system |
| CN104105130A (en) * | 2013-04-03 | 2014-10-15 | 北京三星通信技术研究有限公司 | Load reporting method between UMTS system and LTE system and LTE system |
| CN104144438B (en) * | 2013-05-10 | 2019-03-12 | 中兴通讯股份有限公司 | A kind of method and system of centralized configuration and management nodes |
| WO2015054830A1 (en) * | 2013-10-15 | 2015-04-23 | 华为技术有限公司 | Method and device for processing radio access network information management information |
| CN104967986A (en) * | 2015-06-30 | 2015-10-07 | 中兴通讯股份有限公司 | Adjacent area configuration information managing method and device |
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| CN101247628A (en) * | 2007-02-13 | 2008-08-20 | 华为技术有限公司 | Terminal, wireless communication network access method and radio communication system |
| CN101562892A (en) * | 2009-06-01 | 2009-10-21 | 北京邮电大学 | Method and device for resource allocation |
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| CN101378272B (en) * | 2007-08-30 | 2012-05-23 | 联想(北京)有限公司 | Method for balancing load of multi-hop wireless network based on relay |
| EP2205022B1 (en) * | 2008-12-31 | 2015-04-29 | Alcatel Lucent | Method and apparatus for providing a handover indication in a cellular wireless network |
| WO2010105422A1 (en) * | 2009-03-18 | 2010-09-23 | 华为技术有限公司 | Method, device and system for acquiring load information |
| CN101651950A (en) * | 2009-09-09 | 2010-02-17 | 新邮通信设备有限公司 | Business realization method, equipment and system in long-term evolution network |
| CN101657028B (en) * | 2009-09-10 | 2011-09-28 | 新邮通信设备有限公司 | Method, device and system for establishing S1 interface connection |
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| CN101247628A (en) * | 2007-02-13 | 2008-08-20 | 华为技术有限公司 | Terminal, wireless communication network access method and radio communication system |
| CN101562892A (en) * | 2009-06-01 | 2009-10-21 | 北京邮电大学 | Method and device for resource allocation |
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