CN102045660A - Information interaction method, system, base station and network entity - Google Patents
Information interaction method, system, base station and network entity Download PDFInfo
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Abstract
The embodiment of the invention discloses an information interaction method, an information interaction system, a base station and a network entity. The method comprises that: the base station of a first communication system performs direct information interaction with the network entity in an access network of a second communication system by direct communication connection, wherein the first communication system is different from the second communication system. In the embodiment of the invention, the base station of the first communication system can perform direct information interaction with the network entity in the access network of the second communication system different from the first communication system by direct communication connection, so the information is prevented from being transmitted through a core network, and the information interaction delay between the base station of one communication system and the network entity of the access network of the other communication system is reduced.
Description
Technical field
The embodiment of the invention relates to communication technical field, particularly a kind of information interacting method, system, base station and network entity.
Background technology
Continuous upgrading along with communication system, in order to save total all costs (Totoal Cost ofOwnership, hereinafter to be referred as: TCO), mobile operator has proposed single wireless Access Network (SingleRadio Access Network, hereinafter to be referred as: notion SRAN), it is dissimilar communication systems, as global system for mobile communications (Global System for Mobile Communications, hereinafter to be referred as: GSM), universal mobile telecommunications system (Universal Mobile TelecommunicationsSystem, hereinafter to be referred as: UMTS) and Long Term Evolution (Long Term Evolution, hereinafter to be referred as: LTE) carry out network and build together.
In the system architecture that 3GPP organizes to set up, the Access Network GERAN of GSM comprise base station controller (Base Station Controller, hereinafter to be referred as: BSC) and base transceiver station (BaseTransceiver Station, hereinafter to be referred as: BTS); The Access Network UTRAN of UMTS comprises radio network controller (Radio Network Controller, hereinafter to be referred as: RNC) and base station (NodeB), in addition, the enhancing high-speed packet of UMTS inserts (High Speed Packet Access, hereinafter to be referred as: Access Network HSPA+) only comprises base station (NodeB+) owing to adopted the flattening structure; The Access Network of LTE comprises the base station (eNodeB) of evolution.
In the prior art, carry out information interaction by core net between the network entity in a kind of base station of communication system and the Access Network of another kind of communication system.For example, the BSC in the Access Network of the eNodeB of LTE and GSM carries out information interaction by core net.
The inventor finds that there are the following problems in the prior art in realizing process of the present invention:
In the prior art, when the network entity in a kind of base station of communication system and the Access Network of another kind of communication system carries out information interaction, need carry out the information transmission by core net, this causes between the network entity in the Access Network of a kind of base station of communication system and another kind of communication system the information interaction time delay big.
Summary of the invention
The embodiment of the invention provides a kind of information interacting method, system, base station and network entity, thereby reduces the information interaction time delay between the network entity in the Access Network of the base station of first communication system and second communication system.
The embodiment of the invention provides a kind of information interacting method, comprising:
Direct information interaction is carried out by the network entity that directly communicates to connect in the Access Network with the second communication system in the base station of first communication system, and described first communication system is different from described second communication system.
The embodiment of the invention also provides a kind of base station, and this base station applies comprises in first communication system:
First information interactive module is used for carrying out direct information interaction by the network entity that directly communicates to connect with the Access Network of second communication system, and described first communication system is different from described second communication system.
The embodiment of the invention also provides a kind of network entity, and this network entity is applied to comprise in the Access Network of second communication system:
The second information interaction module is used for carrying out direct information interaction by directly communicating to connect with the base station of first communication system, and described first communication system is different from described second communication system.
The embodiment of the invention also provides a kind of information interaction system, comprising: be applied to the base station of first communication system and be applied to the network entity of the Access Network of second communication system, described first communication system is different from described second communication system;
Described base station is used for carrying out direct information interaction by directly communicating to connect with described network entity.
In the embodiment of the invention, the base station of first communication system can by directly communicate to connect with the Access Network of second communication system that is different from first communication system in network entity carry out direct information interaction, avoided transmitting information, thereby reduced information interaction time delay between the network entity of Access Network of the base station of first communication system and second communication system by core net.
Description of drawings
Fig. 1 is the schematic diagram of the chain of command protocol stack of X2-R interface in the embodiment of the invention;
Fig. 2 is the schematic diagram of the user face protocol stack of X2-R interface in the embodiment of the invention;
Fig. 3 is the schematic diagram of the chain of command protocol stack of Iur-R interface in the embodiment of the invention;
Fig. 4 is the schematic diagram of the user face protocol stack of Iur-R interface in the embodiment of the invention;
The flow chart of a kind of information interacting method that Fig. 5 provides for the embodiment of the invention two;
The flow chart of a kind of information interacting method that Fig. 6 provides for the embodiment of the invention three;
The flow chart of a kind of information interacting method that Fig. 7 provides for the embodiment of the invention four;
The flow chart of a kind of information interacting method that Fig. 8 provides for the embodiment of the invention five;
The flow chart of a kind of information interacting method that Fig. 9 provides for the embodiment of the invention six;
The flow chart of a kind of information interacting method that Figure 10 provides for the embodiment of the invention seven;
The flow chart of a kind of information interacting method that Figure 11 provides for the embodiment of the invention eight;
The flow chart of a kind of information interacting method that Figure 12 provides for the embodiment of the invention nine;
The structural representation of a kind of base station that Figure 13 provides for the embodiment of the invention ten;
The structural representation of a kind of network entity that Figure 14 provides for the embodiment of the invention 11;
The structural representation of a kind of information interaction system that Figure 15 provides for the embodiment of the invention 12.
Embodiment
Below by drawings and Examples, the technical scheme of the embodiment of the invention is described in further detail.
The embodiment of the invention one provides a kind of information interacting method, and this method comprises:
Direct information interaction is carried out by the network entity that directly communicates to connect in the Access Network with the second communication system in the base station of first communication system, and first communication system is different from the second communication system.
In the embodiment of the invention, directly communicating to connect is that network entity by in the Access Network of the base station of first communication system and second communication system is set up by logic interfacing.
In the embodiment of the invention, logic interfacing can be the X2 interface of expansion, and the X2 interface of this expansion can be described as the X2-R interface.The X2-R interface comprises chain of command protocol stack and user face protocol stack.
As shown in Figure 1, Fig. 1 is the schematic diagram of the chain of command protocol stack of X2-R interface in the embodiment of the invention.The chain of command protocol stack of X2-R interface comprises the chain of command protocol stack of the network entity of the chain of command protocol stack of base station of first communication system and second communication system.The chain of command protocol stack of the base station of first communication system comprises that (Stream Control Transmission Protocol is called for short: SCTP) layer and application signaling protocol (X2-R-AP) layer for physical layer (Physical Layer), data link layer (Data Link Layer), IP layer, stream control transmission protocol.Physical layer, data link layer, IP layer and SCTP layer are the transmission network layer protocol.X2-R-AP is based on the agreement that existing X2-AP expands, be the wireless network layer protocol of X2-R interface on chain of command, X2-R-AP increases the mutual optional cell of support information on the basis of existing X2-AP, for example: the optional cell of load information, access control information, system message or configuration information.The chain of command protocol stack of the network entity of second communication system comprises each layer corresponding physical layer, data link layer, IP layer, SCTP layer and the X2-R-AP layer with the chain of command protocol stack of the base station of first communication system, wherein can be referring to the X2-R-AP layer of first communication system to the description of X2-R-AP layer.
As shown in Figure 2, Fig. 2 is the schematic diagram of the user face protocol stack of X2-R interface in the embodiment of the invention.The user face protocol stack of X2-R interface comprises the user face protocol stack of the network entity of the user face protocol stack of base station of first communication system and second communication system.The user face protocol stack of the base station of first communication system comprise physical layer, data link layer, IP layer, User Datagram Protoco (UDP) (User Datagram Protocol, hereinafter to be referred as: UDP) GPRS Tunnel Protocol of layer and user level (GPRS Tunnelling Protocolfor the user plane hereinafter to be referred as: GTP-U) layer.The user face protocol stack of the network entity of second communication system comprises each layer corresponding physical layer, data link layer, IP layer, UDP layer and the GTP-U layer with the user face protocol stack of the base station of first communication system.
In the embodiment of the invention, logic interfacing can also be the Iur interface of expansion, and the Iur interface of this expansion can be described as the Iur-R interface.The Iur-R interface comprises chain of command protocol stack and user face protocol stack.As shown in Figure 3, Fig. 3 is the schematic diagram of the chain of command protocol stack of Iur-R interface in the embodiment of the invention.The chain of command protocol stack of Iur-R interface comprises the chain of command protocol stack of the network entity of the chain of command protocol stack of base station of first communication system and second communication system.The chain of command protocol stack of the base station of first communication system comprise physical layer, data link layer, IP layer, SCTP layer, M3UA (SS7 MTP 3-user is adaptive) layer, signaling connection control protocol (Signaling Connection Control Part, hereinafter to be referred as: SCCP) layer, use signaling protocol (Iur-R-AP) layer.Physical layer, data link layer, IP layer, SCTP layer, M3UA layer are the transmission network layer protocol.Iur-R-AP is based on the agreement that existing Iur-AP expands, be the wireless network layer protocol of Iur-R interface on chain of command, Iur-R-AP increases the mutual optional cell of support information on the basis of existing Iur-AP, for example: the optional cell of load information, access control information, system message or configuration information.The chain of command protocol stack of the network entity of second communication system comprises each layer corresponding physical layer, data link layer, IP layer, SCTP layer and the Iur-R-AP layer with the chain of command protocol stack of the base station of first communication system, wherein can be referring to the Iur-R-AP layer of first communication system to the description of Iur-R-AP layer.
As shown in Figure 4, Fig. 4 is the schematic diagram of the user face protocol stack of Iur-R interface in the embodiment of the invention.The user face protocol stack of Iur-R interface comprises the user face protocol stack of the network entity of the user face protocol stack of base station of first communication system and second communication system.The user face protocol stack of the base station of first communication system comprises physical layer, data link layer, IP layer, UDP layer and GTP-U layer.The user face protocol stack of the network entity of second communication system comprises each layer corresponding physical layer, data link layer, IP layer, UDP layer and the GTP-U layer with the user face protocol stack of the base station of first communication system.
Logic interfacing in the present embodiment includes but not limited to the X2 interface expanded and the Iur interface of expansion, and the interface that draws after can also adopting other present interfaces being expanded of logic interfacing is enumerated no longer one by one at this in actual applications.
In the present embodiment, first communication system is a kind of communication system, and the second communication system is another kind of communication system.First communication system is different from the type that type that the second communication system is meant first communication system is different from the second communication system, and promptly first communication system is the different communication system of type with the second communication system.
When first communication system is LTE, the second communication system can be GSM, UMTS, HSPA+, code division multiple access (Code Division Multiple Access, hereinafter to be referred as: CDMA) 2000 High Rate Packet Data (High Rate Packet Data, hereinafter to be referred as: HRPD), the single carrier frequency Radio Transmission Technology of CDMA2000 (1x Radio Transmission Technology, hereinafter to be referred as: 1xRTT) or worldwide interoperability for microwave insert (Worldwide Interoperability for Microwave Access, hereinafter to be referred as: WiMAX).When the second communication system was GSM, the network entity in the Access Network of this GSM was BSC; When the second communication system was UMTS, the network entity in the Access Network of this UMTS was RNC; When the second communication system was HSPA+, the network entity in the Access Network of this HSPA+ was NodeB+; When the second communication system is CDMA2000 HRPD, then the network entity in the Access Network of this CDMA2000 HRPD be the HRPD access network (Access Network, hereinafter to be referred as: AN); When the second communication system is CDMA2000 1xRTT, then the network entity in the Access Network of this CDMA2000 1xRTT is single carrier frequency base station controller 1x BSC; When the second communication system is WiMAX, the network entity in the Access Network of this WiMAX be the WiMAX access business network (Access Service Network, hereinafter to be referred as: ASN).At this moment, logic interfacing can adopt the X2-R interface, and then the eNodeB of LTE can set up by the X2-R interface with the WiMAX ASN of the 1xBSC of HRPD AN, the CDMA2000 1xRTT of NodeB+, the CDMA2000 HRPD of RNC, the HSPA+ of BSC, the UMTS of GSM or WiMAX and directly communicate to connect.Wherein, when the second communication system was HSPA+ or UMTS, the eNodeB of LTE can also directly communicate to connect by the foundation of Iur-R interface with the NodeB+ of HSPA+ or the RNC of UMTS.
When first communication system was HSPA+, the second communication system can be GSM, LTE, CDMA 2000HRPD, CDMA2000 1xRTT or WiMAX.When the second communication system was GSM, the network entity in the Access Network of this GSM was BSC; When the second communication system was LTE, the network entity in the Access Network of this LTE was eNodeB+; When the second communication system was CDMA2000 HRPD, then the network entity in the Access Network of this CDMA2000HRPD was HRPD AN; When the second communication system is CDMA2000 1xRTT, then the network entity in the Access Network of this CDMA2000 1xRTT is 1x BSC; When the second communication system was WiMAX, the network entity in the Access Network of this WiMAX was WiMAX ASN.At this moment, logic interfacing can adopt the Iur-R interface, and then the NodeB+ of HSPA+ can set up by the Iur-R interface with the WiMAX ASN of the 1x BSC of HRPD AN, the CDMA2000 1xRTT of eNodeB+, the CDMA2000 HRPD of RNC, the LTE of BSC, the UMTS of GSM or WiMAX and directly communicate to connect.Wherein, when the second communication system was LTE, the NodeB+ of HSPA+ can also set up by the X2-R interface with the eNodeB of LTE and directly communicate to connect.
In the present embodiment, the base station of first communication system can by directly communicate to connect with the Access Network of second communication system that is different from first communication system in network entity carry out direct information interaction, avoided transmitting information, thereby reduced information interaction time delay between the network entity of Access Network of the base station of first communication system and second communication system by core net.
The flow chart of a kind of information interacting method that Fig. 5 provides for the embodiment of the invention two, as shown in Figure 5, this method comprises:
The base station of step 501, first communication system sends information request message by the network entity that directly communicates to connect in the Access Network of second communication system;
In the present embodiment, comprise request content and report manner in the information request message.
Network entity in the Access Network of step 502, second communication system sends information according to information request message and by directly communicating to connect to the base station of first communication system.
Particularly, network entity sends and the corresponding information of request content in the information request message by directly communicating to connect to the base station.And when the report manner in the information request message was incident, network entity only sent once corresponding with request content information to the base station; When the report manner in the information request message was the cycle, network entity periodically sent the information corresponding with request content, the process of the step 502 indication cycle property transmission information among Fig. 5 on the dotted line to the base station.
When report manner was the cycle, further, this method also comprised:
The base station of step 503, first communication system stops message by the network entity transmission information that directly communicates to connect in the Access Network of second communication system;
This information stops message and is used for the informing network entity and stops to send information to the base station.
In the present embodiment, the base station of first communication system can send information request by the network entity that directly communicates to connect in the Access Network of second communication system, and by directly communicating to connect the information that network entity sends of obtaining, avoided the base station to obtain information from network entity by core net, thereby reduced the information interaction time delay between the network entity in the Access Network of the base station of first communication system and second communication system, made information interactive process reliability height; Reduced the information interaction flow process; Reduced dependence, helped the expansion of interactive information between the network entity in the Access Network of the base station of first communication system and second communication system core net; And, reduced the information loads of core net owing to need not to transmit information by core net.
The flow chart of a kind of information interacting method that Fig. 6 provides for the embodiment of the invention three, as shown in Figure 6, this method comprises:
Network entity in the Access Network of step 601, second communication system sends information request message by directly communicating to connect to the base station of first communication system;
In the present embodiment, comprise request content and report manner in the information request message.
The base station of step 602, first communication system sends information according to information request message and by the network entity of logic interfacing in the Access Network of second communication system.
Particularly, the base station sends and the corresponding information of request content in the information request message by directly communicating to connect to network entity.And when the report manner in the information request message was incident, the base station sent once corresponding with request content information to network entity; When the report manner in the information request message was the cycle, the base station periodically sent the information corresponding with request content, the process of the step 602 indication cycle property transmission information among Fig. 6 on the dotted line to network entity.
When report manner was the cycle, further, this method also comprised:
Network entity in the Access Network of step 603, second communication system stops message by directly communicating to connect to the base station of first communication system transmission information;
This information stops message and is used for informing base station and stops to send information to network entity.
In the present embodiment, network entity in the Access Network of second communication system can send information request by directly communicating to connect to the base station of first communication system, and by directly communicating to connect the information that the base station sends of obtaining, avoided network entity to obtain information from the base station by core net, thereby reduced the information interaction time delay between the base station of the network entity in the Access Network of second communication system and first communication system, made information interactive process reliability height; Reduced the information interaction flow process; Reduced dependence, helped the expansion of interactive information between the base station of the network entity in the Access Network of second communication system and first communication system core net; And, reduced the information loads of core net owing to need not to transmit information by core net.
The flow chart of a kind of information interacting method that Fig. 7 provides for the embodiment of the invention four, as shown in Figure 7, this method comprises:
Network entity in the Access Network of step 701, second communication system sends information by directly communicating to connect to the base station of first communication system.
Present embodiment is the network entity in the Access Network of second communication system initiatively sends a situation from information to the base station of first communication system.When the network entity information of detecting changes, promptly send information by directly communicating to connect to the base station.
In the present embodiment, network entity in the Access Network of second communication system can send information by directly communicating to connect to the base station of first communication system, avoided transmitting information to the base station by core net, thereby reduced the information interaction time delay between the network entity in the Access Network of the base station of first communication system and second communication system, made information interactive process reliability height; Reduced the information interaction flow process; Reduced dependence, helped the expansion of interactive information between the network entity in the Access Network of the base station of first communication system and second communication system core net; And, reduced the information loads of core net owing to need not to transmit information by core net.
The flow chart of a kind of information interacting method that Fig. 8 provides for the embodiment of the invention five, as shown in Figure 8, this method comprises:
The base station of step 801, first communication system sends information by the network entity that directly communicates to connect in the Access Network of second communication system.
Present embodiment is the situation that the base station network entity of active in the Access Network of second communication system of first communication system sends information.When the base station information of detecting changes, promptly send information by directly communicating to connect to network entity.
In the present embodiment, the base station of first communication system can send information by the network entity that directly communicates to connect to the second communication system, avoided transmitting information to network entity by core net, thereby reduced the information interaction time delay between the network entity in the Access Network of the base station of first communication system and second communication system, made information interactive process reliability height; Reduced the information interaction flow process; Reduced dependence, helped the expansion of interactive information between the network entity in the Access Network of the base station of first communication system and second communication system core net; And, reduced the information loads of core net owing to need not to transmit information by core net.
To the specific descriptions of first communication system, second communication system, network entity and logic interfacing, can repeat no more in the foregoing description two to embodiment five referring to the foregoing description one herein.
In the various embodiments of the present invention, carry out mutual information and can comprise by directly communicating to connect: load information, access control information, system message or configuration information.
Load information comprises hardware load information (Hardware load indicator), transport layer load information (TNL load indicator), wave point load information (Radio load indicator), cell capacity rank (Cell capacity class), total cell load (Total cell load), guarantees bit rate business load (GBR load) or non-assurance bit rate traffic load information (non-GBR load).
Access control information comprises that access grade restricted information (Access Class Barringinformation), sub-district forbid access information (Cell barred information) or cell reservation information (Cell Reserved information).
Configuration information comprises cell type, frequency information, type of service or adjacent area type.
After the network entity in the Access Network of base station in first communication system or second communication system receives load information, this load information can be used for mobile management, for example when UE will be when LTE switches to UMTS according to measurement report, the load information that the eNodeB of LTE can send according to the RNC of the UMTS that receives carries out switch decision, selects the little sub-district of load to switch.As shown in Figure 9, the flow chart of a kind of information interacting method of providing for the embodiment of the invention six of Fig. 9.This method comprises:
Network entity in the Access Network of step 901, second communication system is by directly communicating to connect the load information that sends the sub-district of second communication system to the base station of first communication system;
Wherein, the load information of the sub-district of second communication system can comprise hardware load information, transport layer load information and wave point load information.
The base station of step 902, first communication system receives the measurement report that UE reports, and this measurement report comprises the sub-district of the second communication system that is fit to the UE switching;
As UE because mobility and need switch in the sub-district of second communication system the time, the base station of subscriber equipment in first communication system reports this measurement report.
Switch decision is carried out according to the load information of the sub-district of second communication system in the base station of step 903, first communication system, determines Target cell from the sub-district of the second communication system that suitable UE switches;
For example, the base station of first communication system can be according to the load information of the sub-district of second communication system, selects the little sub-district of load as Target cell from the sub-district that is fit to the second communication system that UE switches.
In the present embodiment, when switch decision is carried out in the base station of first communication system, the load information that can send by the network entity that directly communicates to connect in the Access Network that receives the second communication system, avoided by core net to the first communication systems communicate information, thereby reduced information interaction time delay between the network entity in the Access Network of the base station of first communication system and second communication system.The flow chart of a kind of information interacting method that Figure 10 provides for the embodiment of the invention seven, as shown in figure 10, this method comprises:
The base station of step 1001, first communication system initiates to switch, so that subscriber equipment (UserEquipment, hereinafter to be referred as: UE) switch into the second communication system from LTE;
The base station of step 1002, first communication system sends handoff request (Handover Required) by the network entity that directly communicates to connect in the Access Network of second communication system;
Network entity in the Access Network of step 1003, second communication system sends switching command (Handover Command) by directly communicating to connect to the base station of first communication system;
The base station of step 1004, first communication system sends switching command to UE;
The Access Network of the second communication system at step 1005, UE access network entity place;
Step 1006, the UE network entity in the Access Network of second communication system sends to switch finishes (Handover Complete), thereby finishes the process of going into the opposite end communication system of switching;
The base station of step 1007, first communication system is by the network entity in the Access Network that directly communicates to connect the user face data that will receive and send to the second communication system;
As UE in a period of time after first communication system is switched the second communication system, user face data also can be received in the base station of common first communication system, and this moment, the base station of first communication system can send to network entity by directly communicating to connect the user face data that will receive.
Present embodiment is the handoff procedure of UE from first communication system to the second communication system.In the prior art, UE is as follows from the process that first communication system switches to the second communication system: with first communication system is that LTE and second communication system are that UMTS is an example, eNodeB is to mobile management entity (the MobileManagenment Entity of LTE, hereinafter to be referred as: MME) send handoff request, MME is to Serving GPRS Support Node (the Service GPRS Support Node of UMTS, hereinafter to be referred as: SGSN) send the directed request of forward direction, SGSN sends directed request to the RNC of UMTS, RNC sends the directed request of forward direction to SGSN and confirms, SGSN sends the forward direction orientation response to MME, and MME sends switching command to eNodeB.Owing to do not have interface between the RNC of eNodeB and UMTS, so the information interaction between eNodeB and the RNC can only realize by core net in the handoff procedure in the prior art.And directly communicate to connect owing to existing between eNodeB and the RNC in the present embodiment, so can directly carry out information interaction between eNodeB and the RNC.Send the process of handoff request to the switching command that receives the MME transmission from eNodeB to MME in the prior art, information interaction need be striden eNodeB, MME, SGSN and four network elements of RNC, and information interaction only needs to stride eNodeB and two network elements of RNC in the present embodiment.That is to say that the information interaction between the network entity in the Access Network of the base station of first communication system in the present embodiment and second communication system only needs to stride two network elements, has compared with prior art reduced the information interaction time delay.Send the process of handoff request from eNodeB to MME in the prior art to the switching command that receives the MME transmission, information interaction need experience 3 interfaces totally 6 steps, and the present embodiment information interaction need experience 1 interface totally 2 steps, has compared with prior art reduced the information interaction flow process.
To be UE switch the information interaction flow process of Access Network one side the second communication systematic procedure from first communication system to present embodiment.Further, can comprise also that between step 1002 and step 1003 network entity in the core net of second communication system at network entity and this network entity place carries out the step of forward direction orientation; Can also comprise that between step 1004 and step 1005 network entity in the core net of first communication system at base station and place, base station carries out the step of forward direction orientation.
In the present embodiment, the base station of first communication system can by directly communicate to connect and the Access Network of second communication system in network entity carry out information interaction to finish the handoff procedure between communication network, avoided transmitting information by core net, thereby reduced the information interaction time delay between the network entity in the Access Network of the base station of first communication system and second communication system, made information interactive process reliability height; Reduced the information interaction flow process; Reduced dependence, helped the expansion of interactive information between the network entity in the Access Network of the base station of first communication system and second communication system core net; And, reduced the information loads of core net owing to need not to transmit information by core net.
The flow chart of a kind of information interacting method that Figure 11 provides for the embodiment of the invention eight, as shown in figure 11, this method comprises:
Network entity in the Access Network of step 1101, second communication system initiates to switch, so that UE switches into first communication system from the second communication system;
Network entity in the Access Network of step 1102, second communication system sends handoff request (Handover Required) by directly communicating to connect to the base station of first communication system;
The base station of step 1103, first communication system sends switching command (Handover Command) by the network entity that directly communicates to connect in the Access Network of second communication system;
Network entity in the Access Network of step 1104, second communication system sends switching command to UE;
The Access Network of first communication system at step 1105, UE access base station place;
Step 1106, UE send to switch to the base station of first communication system and finish (HandoverComplete), thereby finish the process of going into first communication system of switching;
The base station of step 1107, first communication system sends to network entity by directly communicating to connect the user face data that will receive;
As UE in a period of time after first communication system is switched in the second communication system, usually the network entity in the second communication system also can receive user face data, and this moment, network entity can directly send to the user face data that receives the base station of first communication system.
Present embodiment has compared with prior art reduced the information interaction time delay, has reduced the information interaction flow process, and specific descriptions can be referring to the description of embodiment seven.
To be UE switch the information interaction flow process of Access Network one side the first communication system process from the second communication system to present embodiment.Further, can comprise also that between step 1102 and step 1104 network entity in the core net of first communication system at base station and this place, base station carries out the step of forward direction orientation; Can also comprise that between step 1104 and step 1105 network entity in the second communication system at network entity and network entity place carries out the step of forward direction orientation.
In the present embodiment, the base station of first communication system can by directly communicate to connect and the Access Network of second communication system in network entity carry out information interaction to finish the handoff procedure between communication network, avoided transmitting information by core net, thereby reduced the information interaction time delay between the network entity in the Access Network of the base station of first communication system and second communication system, made information interactive process reliability height; Reduced the information interaction flow process; Reduced dependence, helped the expansion of interactive information between the network entity in the Access Network of the base station of first communication system and second communication system core net; And, reduced the information loads of core net owing to need not to transmit information by core net.
In the foregoing description seven and embodiment eight,, can repeat no more referring to the foregoing description one to the specific descriptions of first communication system, second communication system, network entity and logic interfacing herein.
Below by a specific embodiment information interacting method is specifically described.In the present embodiment, first communication system is LTE, and the base station is eNodeB, and the second communication system is UMTS, and network entity is RNC, directly communicates to connect by the X2-R interface and sets up.Be the technical scheme of clearer description present embodiment, eNodeB is called source eNodeB, RNC is called Target RNC.
The flow chart of a kind of information interacting method that Figure 12 provides for the embodiment of the invention nine, as shown in figure 12, this method comprises:
Step 1201, source eNodeB initiate to switch;
Step 1202, source eNodeB send handoff request Handover Required by directly communicating to connect to Target RNC;
Step 1203, Target RNC send the directed request of forward direction (Forward RelocationRequest) to target SGSN;
Step 1204, target SGSN to the destination service gateway (Serving Gateway, hereinafter to be referred as: S-GW) send the carrying request (Create Bearer Request) of creating;
Step 1205, target S-GW send to target SGSN and create carrying response (Create BearerResponse);
Step 1206, target SGSN send forward direction orientation response (Forward RelocationResponse) to Target RNC;
Step 1207, Target RNC send switching command (Handover Command) by directly communicating to connect to source eNodeB;
Step 1208, source eNodeB send the directed request of forward direction (Forward RelocationRequest) to source MME;
Step 1209, source MME send the carrying request (Create Bearer Request) of creating to source S-GW;
Step 1210, source S-GW send to source MME and create carrying response (Create BearerResponse);
Step 1211, source MME send forward direction orientation response (Forward RelocationResponse) to source eNodeB;
Step 1212, source eNodeB send switching command to UE;
Step 1213, UE insert the Access Network at Target RNC place;
Step 1214, UE send to switch to Target RNC and finish (Handover Complete);
Step 1215, packet data network gateway (Packet Data Network Gateway, hereinafter to be referred as: PDN GW) send user plane protocol data cell PDU data to source eNodeB by source S-GW;
Step 1216, source eNodeB send to Target RNC by directly communicating to connect the user's face PDU data that will receive;
Step 1217, Target RNC send orientation to target SGSN and finish (Relocation Complete);
Step 1218, target SGSN send the forward direction orientation to target source MME and finish (ForwardRelocation Complete);
Step 1219, source MME send the forward direction orientation to target SGSN and finish affirmation (ForwardRelocation Complete Acknowledge);
Step 1220, target SGSN send more new bearer request (Update BearerRequest) to target S-GW;
Step 1221, target S-GW send more new bearer request (Update BearerRequest) to PDN GW;
Step 1222, PDN GW send more new bearer response (Update BearerResponse) to target S-GW;
Step 1223, target S-GW send more new bearer response (Update BearerResponse) to target SGSN;
Step 1224, UE and PDN GW carry out the transmission of user's face PDU data by Target RNC and source S-GW;
Step 1225, routing region updating;
Step 1226, source MME send deleting bearing request (Delete Bearer Request) to source S-GW;
Step 1227, source eNodeB and source MME discharge resource;
Step 1228, source S-GW send deleting bearing response (Delete BearerResponse) to source MME;
Step 1229, target SGSN and target S-GW deleting bearing.
The present embodiment eNodeB that to be UE switch to the handoff procedure of UMTS and LTE from LTE is transmitted to the user face data that receives the process of the RNC of UMTS.And UE switches to the handoff procedure of LTE from UMTS similar from the handoff procedure that LTE switches to UMTS to UE, the RNC of UMTS is transmitted to the user face data that receives the process of eNodeB of LTE and the eNodeB of LTE is transmitted to the similar process of the RNC of UMTS with the user face data that receives, and repeats no more herein.
In the present embodiment, the base station of first communication system can by directly communicate to connect and the Access Network of second communication system in network entity carry out information interaction to finish the handoff procedure between communication network, avoided transmitting information by core net, thereby reduced the information interaction time delay between the network entity in the Access Network of the base station of first communication system and second communication system, made information interactive process reliability height; Reduced the information interaction flow process; Reduced dependence, helped the expansion of interactive information between the network entity in the Access Network of the base station of first communication system and second communication system core net; And, reduced the information loads of core net owing to need not to transmit information by core net.
The structural representation of a kind of base station that Figure 13 provides for the embodiment of the invention ten, as shown in figure 13, the base station applies of present embodiment is in first communication system, this base station comprises first information interactive module 11, first information interactive module 11 is used for carrying out direct information interaction by the network entity that directly communicates to connect with the Access Network of second communication system, and first communication system is different from the second communication system.
Wherein, directly communicating to connect is that network entity by in the Access Network of the base station of first communication system and second communication system is set up by logic interfacing.
Particularly, to the specific descriptions of first communication system, second communication system, network entity and logic interfacing, can repeat no more in the present embodiment referring to the foregoing description one herein.
In the present embodiment, the base station of first communication system can by directly communicate to connect with the Access Network of second communication system that is different from first communication system in network entity carry out information interaction, avoided transmitting information, thereby reduced information interaction time delay between the network entity of Access Network of the base station of first communication system and second communication system by core net.
The structural representation of a kind of network entity that Figure 14 provides for the embodiment of the invention 11, as shown in figure 14, network entity in the present embodiment is applied in the Access Network of second communication system, this network entity comprises the second information interaction module 21, the second information interaction module 21 is used for carrying out direct information interaction by directly communicating to connect with the base station of first communication system, and first communication system is different from the second communication system.
Wherein, directly communicating to connect is that network entity by in the Access Network of the base station of first communication system and second communication system is set up by logic interfacing.
Particularly, to the specific descriptions of first communication system, second communication system, network entity and logic interfacing, can repeat no more in the present embodiment referring to the foregoing description one herein.
In the present embodiment, network entity in the Access Network of second communication system can by directly communicate to connect with the base station that is different from second communication system first communication system carry out direct information interaction, avoided transmitting information, thereby reduced information interaction time delay between the base station of the network entity of Access Network of second communication system and first communication system by core net.
The structural representation of a kind of information interaction system that Figure 15 provides for the embodiment of the invention 12, as shown in figure 15, this system comprises base station 1 and network entity 2, and base station 1 is applied to first communication system, network entity 2 is applied to the second communication system, and first communication system is different from the second communication system; Base station 1 is used for carrying out direct information interaction by directly communicating to connect with network entity 2.
Particularly, base station 1 can be referring to the description among the embodiment ten, and network entity 2 can repeat no more referring to the description among the embodiment 11 herein.
In the information interaction system of present embodiment, the base station of first communication system can by directly communicate to connect with the Access Network of second communication system that is different from first communication system in network entity carry out direct information interaction, avoided transmitting information by core net, thereby reduced the information interaction time delay between the network entity in the Access Network of the base station of first communication system and second communication system, made information interactive process reliability height; Reduced the information interaction flow process; Reduced dependence, helped the expansion of interactive information between the network entity in the Access Network of the base station of first communication system and second communication system core net; And, reduced the information loads of core net owing to need not to transmit information by core net.
Logic interfacing in the embodiment of the invention can be disposed at base station and the network entity with cell neighboring relation, perhaps is disposed at base station and network entity with cell neighboring relation.Usually this logic interfacing is disposed at base station and the network entity with cell neighboring relation, to realize having the base station of cell neighboring relation and the information interaction between the network entity.
Technical scheme in the embodiment of the invention can well satisfy collaborative RRM (Cooperation Radio Resource Management under the SRAN scene, be called for short: demand Co-RRM), specifically can be used for being achieved as follows application: load balance between system, professional layering between system, Inter-RAT network assisted cell change (Network Assisted Cell Change between wireless access network, be called for short: NACC), unite the pass carrier frequency, common transmission is shared etc.
It should be noted that at last: above embodiment is only in order to technical scheme of the present invention to be described but not limit it, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that: it still can make amendment or be equal to replacement technical scheme of the present invention, and these modifications or be equal to replacement and also can not make amended technical scheme break away from the spirit and scope of technical solution of the present invention.
Claims (14)
1. an information interacting method is characterized in that, comprising:
Direct information interaction is carried out by the network entity that directly communicates to connect in the Access Network with the second communication system in the base station of first communication system, and described first communication system is different from described second communication system.
2. method according to claim 1 is characterized in that, described directly communicating to connect is that network entity by in the Access Network of the base station of described first communication system and described second communication system is set up by logic interfacing.
3. method according to claim 2 is characterized in that, described logic interfacing comprises the X2 interface of expansion or the Iur interface of expansion.
4. method according to claim 1 is characterized in that, the base station of described first communication system is carried out direct information interaction and comprised by directly communicating to connect network entity in the Access Network with the second communication system:
Described base station sends information request message by described directly communicating to connect to described network entity, by the described information that described network entity sends according to described information request message that receives that directly communicates to connect; Perhaps
Described base station receives the information request message that described network entity sends by described directly communicating to connect, and sends information according to described information request message by described directly communicating to connect to described network entity.
5. method according to claim 4 is characterized in that,
When described base station directly communicates to connect when described network entity sends information request message by described, describedly also comprise after receiving the information that described network entity sends according to described information request message by described directly communicating to connect: described base station stops message by described directly communicating to connect to described network entity transmission information; Perhaps
When described base station directly communicates to connect when receiving the information request message that described network entity sends by described, describedly also comprise by described directly communicating to connect after described network entity sends information according to described information request message: described base station stops message by the described information that receives described network entity transmission that directly communicates to connect.
6. method according to claim 1 is characterized in that, the base station of described first communication system is carried out direct information interaction and comprised by directly communicating to connect network entity in the Access Network with the second communication system:
Described base station is by the described information that described network entity sends that receives that directly communicates to connect; Perhaps
Described base station sends information by described directly communicating to connect to described network entity.
7. method according to claim 1, it is characterized in that the base station of described first communication system is carried out direct information interaction and comprised by directly communicating to connect network entity in the Access Network with the second communication system: described base station sends handoff request by described directly communicating to connect to described network entity; Described base station receives the switching command that described network entity sends by described directly communicating to connect; Perhaps
Described base station receives the handoff request that described network entity sends by described directly communicating to connect; Described base station sends switching command by described directly communicating to connect to described network entity.
8. method according to claim 7, it is characterized in that described base station also comprises by described directly communicating to connect after described network entity sends handoff request: described base station sends user face data by described directly communicating to connect to described network entity; Perhaps
Described base station also comprises by the described handoff request that receives described network entity transmission that directly communicates to connect afterwards: described base station receives the user face data that described network entity sends by described directly communicating to connect.
9. method according to claim 1 is characterized in that, the base station of described first communication system is carried out direct information interaction and comprised by directly communicating to connect network entity in the Access Network with the second communication system:
Described base station is by the described load information that directly communicates to connect the sub-district of the described second communication system that receives that described network entity sends.
10. method according to claim 9 is characterized in that, also comprises:
Described base station receives the measurement report of user equipment to report, and described measurement report comprises the sub-district of the second communication system that is fit to described subscriber equipment switching;
Switch decision is carried out according to the load information of the sub-district of described second communication system in described base station, determines Target cell from the described sub-district that is fit to the second communication system that described subscriber equipment switches.
11. according to the arbitrary described method of claim 1 to 6, it is characterized in that described information comprises: load information, access control information, system message or configuration information.
12. a base station is applied to first communication system, it is characterized in that, comprising:
First information interactive module is used for carrying out direct information interaction by the network entity that directly communicates to connect with the Access Network of second communication system, and described first communication system is different from described second communication system.
13. network entity, be applied in the Access Network of second communication system, it is characterized in that, comprise: the second information interaction module, be used for carrying out direct information interaction by directly communicating to connect with the base station of first communication system, described first communication system is different from described second communication system.
14. an information interaction system is characterized in that, comprising: be applied to the base station of first communication system and be applied to network entity in the Access Network of second communication system, described first communication system is different from described second communication system;
Described base station is used for carrying out direct information interaction by directly communicating to connect with described network entity.
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