CN105491617A

CN105491617A - Method for supporting local offloading of business and base station sub-system

Info

Publication number: CN105491617A
Application number: CN201510881315.6A
Authority: CN
Inventors: 付永魁
Original assignee: Beijing Northern Fiberhome Technologies Co Ltd
Current assignee: Wuhan Hongxin Telecommunication Technologies Co Ltd
Priority date: 2015-12-03
Filing date: 2015-12-03
Publication date: 2016-04-13

Abstract

The invention discloses a method for supporting the local offloading of business. The method is applied to a base station sub-system which comprises a base station and a business local offloading module consisting of a business offloading transfer engine and a business offloading control module, wherein the business offloading control module controls the business offloading transfer engine and the packet data convergence protocol module of the base station to implement the method. The method comprises the steps that the PDCP module acquires a first data packet sent by a first user apparatus to which the service is provided by the base station, and when it is determined that the first user apparatus supports the local offloading business and the target address of the first data packet is a preconfigured network address for offloading to the local or located in the preconfigured network segment for offloading to the local, the first data packet is sent to the business offloading transfer engine; and the business offloading transfer engine sends the first data packet to the target address, wherein the first data packet does not pass through a core network during the transmission process.

Description

A kind of method of supporting business this locality shunting and base station sub-system

Technical field

The present invention relates to communication technical field, particularly relate to method and the base station sub-system of the shunting of a kind of supporting business this locality.

Background technology

With Long Term Evolution (LongTermEvolution, being called for short LTE) technology is example, network architecture schematic diagram shown in Figure 1, for traditional public land mobile net network, as subscriber equipment (UserEquipment, be called for short UE) server of base station 1 in same geographical position of such as UE1 access and its access or other network equipment (such as Campus Network Server) time, corresponding service route is 1<-> switch <-> edge router <-> core net <-> internet, UE1<-> base station <-> Campus Network Server, when the equal access base station 1 of UE1 and UE2, the service route that then UE1 with UE2 communicates is UE1<-> base station 1<-> switch <-> edge router <-> core net <-> edge router <-> switch <-> base station 1<->UE2.

Visible, even if in same net, data service also needs through core net.Bring following problem like this:

(1), data service around a circle through core net, causes data transmission delay increasing, service quality (QualityofService is called for short QoS) reduction, has a strong impact on Consumer's Experience;

(2), emphasis network burden, may network congestion be caused;

(3), transmission bandwidth operation cost is increased.

Along with the development of wireless technology, the bandwidth needed for user is increasing, if still adopt traditional public land mobile net network service transmission mode, the problems referred to above can be more and more serious.

Summary of the invention

In view of this, the main purpose of the embodiment of the present invention is the method and the base station sub-system that provide the shunting of a kind of supporting business this locality, to realize the object improving data transmission bauds, reduce network burden, reduce operation cost.

For achieving the above object, embodiments provide the method for a kind of supporting business this locality shunting, described method is applied to a kind of base station sub-system, the local diverter module of business that described base station sub-system comprises base station and is made up of service distributing forwarding engine and service distributing control module, the PDCP PDCP module that described service distributing control module controls described service distributing forwarding engine and described base station realizes described method, and described method comprises:

Described PDCP module obtains the first packet that the first user equipment of described base station service is sent out, when determine the local shunting business of described first user equipment support and the destination address of described first packet be pre-configured be diverted to the local network address or be positioned at pre-configured be diverted to the local network segment time, will described first Packet Generation extremely described service distributing forwarding engine;

Described service distributing forwarding engine by described first Packet Generation to described destination address, wherein, described first packet in transmitting procedure without core net.

Optionally, described first Packet Generation to described destination address, comprises by described service distributing forwarding engine:

If described service distributing forwarding engine determines that the destination address of described first packet is the IP address of the second subscriber equipment of described base station service, then directly described first packet is issued to described second subscriber equipment by described PDCP module;

If described service distributing forwarding engine determines that the destination address of described first packet is at the server in same geographical position or other network equipment with described base station, described server or other network equipment are connected with described switch, then direct described first packet is sent to described server or other network equipment through described switch.

Optionally, described method also comprises:

Described service distributing forwarding engine obtains the second packet issued with the server of described base station in same geographical position or other network equipment through switch, when determining that the destination address of described second packet is the IP address of the first user equipment of described base station service, then directly described second packet is issued to described first user equipment by described PDCP module.

Optionally, store at least one in described PDCP module and transmit, eachly transmit a corresponding subscriber equipment; Described when determine the local shunting business of described first user equipment support and the destination address of described first packet be pre-configured be diverted to the local network address or be positioned at pre-configured be diverted to the local network segment time after, also comprise:

If do not store in described PDCP module and corresponding the transmitting of described first user equipment, then create and corresponding the transmitting of described first user equipment, wherein, comprise the source address of described first packet with corresponding the transmitting of described first user equipment;

Then, determine that the destination address of described second packet is the IP address of the first user equipment of described base station service, comprising:

The destination address of described second packet mates with the source address in all transmitting by described service distributing forwarding engine, if the match is successful and the source address matched is the IP address of first user equipment of described base station service, then determine that the destination address of described second packet is the IP address of described first user equipment.

Optionally, described service distributing forwarding engine also comprises after being mated with the source address in all transmitting by the destination address of described second packet:

If it fails to match, then when determining that the destination address of described second packet is the IP address of the second subscriber equipment of described base station service and determines that local shunting business supported by described second subscriber equipment, utilize described PDCP module creation and corresponding the transmitting of described second subscriber equipment, wherein, the destination address of described second packet is comprised with corresponding the transmitting of described second subscriber equipment;

Directly described second packet is issued to described second subscriber equipment by described PDCP module.

Optionally, at least one user property numbering SPID that local shunting business that described base station side is pre-configured is corresponding, the Mobility Management Entity MME side different SPID that has been the user device configuration of each support local shunting business in advance;

Describedly determine that described first user equipment supports local shunting business, comprising:

Described base station is receiving after initial context that MME issues sets up request message, the SPID that this locality configures is mated with the SPID that described initial context sets up the described first user equipment carried in request message, if the match is successful, then determine that described first user equipment supports local shunting business.

Describedly determine that local shunting business supported by described second subscriber equipment, comprising:

Described base station is receiving after initial context that MME issues sets up request message, the SPID that this locality configures is mated with the SPID that described initial context sets up described second subscriber equipment carried in request message, if the match is successful, then determine that local shunting business supported by described second subscriber equipment.

Optionally, before described service distributing control module controls described service distributing forwarding engine and described PDCP module realizes described method, also comprise:

Business forwarding is conventionally carried out to the upstream data bag obtained in described base station, if determine, the source address of described upstream data bag is the IP address of the subscriber equipment of described base station service, then preserve this IP address; Business forwarding is conventionally carried out to the downlink data packet obtained in described base station, if determine, the destination address of described downlink data packet is the IP address of the subscriber equipment of described base station service, then preserve this IP address;

Describedly determine that the destination address of described first packet is the IP address of the second subscriber equipment of described base station service, comprising:

The destination address of described first packet is mated with the IP address of preserving in described base station, if the IP address that the match is successful and match is the IP address of described second subscriber equipment, then determine that the destination address of described first packet is the IP address of the second subscriber equipment of described base station service, if it fails to match, then by analyzing described first packet, determine that whether the destination address of described first packet is the IP address of the second subscriber equipment of described base station service.

Describedly determine that the destination address of described second packet is the IP address of the second subscriber equipment of described base station service, comprising:

The destination address of described second packet is mated with the IP address of preserving in described base station, if the IP address that the match is successful and match is the IP address of described second subscriber equipment, then determine that the destination address of described second packet is the IP address of the second subscriber equipment of described base station service, if it fails to match, then by analyzing described second packet, determine that whether the destination address of described second packet is the IP address of the second subscriber equipment of described base station service.

Optionally, the local diverter module of described business is at described inside of base station or between described base station and switch.

The embodiment of the present invention additionally provides a kind of base station sub-system, the local diverter module of business that described base station sub-system comprises base station and is made up of service distributing forwarding engine and service distributing control module, the PDCP PDCP module that described service distributing control module controls described service distributing forwarding engine and described base station realizes following functions:

Optionally, described service distributing control module specifically controls described service distributing forwarding engine and described PDCP module realizes following functions:

Optionally, described service distributing control module also controls described service distributing forwarding engine and described PDCP module realizes following functions:

Optionally, store at least one in described PDCP module and transmit, eachly transmit a corresponding subscriber equipment; Described service distributing control module also controls described PDCP module and realizes following functions:

When described PDCP module determine the local shunting business of described first user equipment support and the destination address of described first packet be pre-configured be diverted to the local network address or be positioned at pre-configured be diverted to the local network segment time, if do not store in described PDCP module and corresponding the transmitting of described first user equipment, then create and corresponding the transmitting of described first user equipment, wherein, the source address of described first packet is comprised with corresponding the transmitting of described first user equipment;

Described service distributing control module specifically controls described service distributing forwarding engine and realizes following functions:

After the destination address of described second packet mates with the source address in all transmitting by described service distributing forwarding engine, if it fails to match, then when determining that the destination address of described second packet is the IP address of the second subscriber equipment of described base station service and determines that local shunting business supported by described second subscriber equipment, utilize described PDCP module creation and corresponding the transmitting of described second subscriber equipment, wherein, the destination address of described second packet is comprised with corresponding the transmitting of described second subscriber equipment;

Described base station, for receiving after initial context that MME issues sets up request message, the SPID that this locality configures is mated with the SPID that described initial context sets up the described first user equipment carried in request message, if the match is successful, then determine that described first user equipment supports local shunting business.

Described base station, for receiving after initial context that MME issues sets up request message, the SPID that this locality configures is mated with the SPID that described initial context sets up described second subscriber equipment carried in request message, if the match is successful, then determine that local shunting business supported by described second subscriber equipment.

Optionally, described base station, also for controlling before described service distributing forwarding engine and described PDCP module realize described method in described service distributing control module, conventionally business forwarding is carried out to the upstream data bag obtained, if determine, the source address of described upstream data bag is the IP address of the subscriber equipment of described base station service, then preserve this IP address; Business forwarding is conventionally carried out to the downlink data packet obtained in described base station, if determine, the destination address of described downlink data packet is the IP address of the subscriber equipment of described base station service, then preserve this IP address;

The method of supporting business this locality shunting that the embodiment of the present invention provides and base station sub-system, the first packet that the first user equipment of access base station is sent out is obtained by PDCP module, when the destination address of described first packet be public network address or local network segment time, if determine, described first user equipment supports local shunting business, then by described first Packet Generation extremely described service distributing forwarding engine; Described service distributing forwarding engine is by described first Packet Generation extremely described destination address.Local service data can be carried out this locality shunting by the embodiment of the present invention, and local service data will not beam back this locality again through core net, effectively can improve data transmission bauds like this, reduce network burden, reduce transmission bandwidth operation cost.

Accompanying drawing explanation

In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.

Fig. 1 is network architecture schematic diagram in prior art;

Fig. 2 is that the embodiment of the present invention supports one of use scenes schematic diagram of local service shunting;

Fig. 3 is the use scenes schematic diagram two that the embodiment of the present invention supports local service shunting;

Fig. 4 is the use scenes schematic diagram three that the embodiment of the present invention supports local service shunting;

Fig. 5 is the schematic flow sheet of the method for embodiment of the present invention supporting business this locality shunting;

Fig. 6 is embodiment of the present invention Signalling exchange schematic diagram;

Fig. 7 is the composition schematic diagram of embodiment of the present invention base station sub-system.

Embodiment

For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.

One of use scenes schematic diagram of support local service shunting shown in Figure 2, wherein contains the access of fixing cable broadband, fixing WiFI access and mobile broadband access (i.e. public land mobile net network access).Base station 1, base station 2 ..., base station N is the chief component of the base station sub-system equipment adopting public land mobile net network technical system, for LTE, base station and eNodeB equipment, user is managed base station by operation maintenance center's (OperationandMaintenanceCenter is called for short OMC).

Compared with normal base station, be the shunting of supporting business this locality, at the local diverter module of the built-in business of base station sub-system, the local diverter module of described business is a logic entity, can with normal base station common hardware, also can isolated operation in certain hardware entities.In embodiments of the present invention, the local diverter module of described business is at inside of base station or between base station and switch, the use scenes schematic diagram two of support local service shunting shown in Figure 3, the local diverter module of described business is between normal base station and switch, the use scenes schematic diagram three of support local service shunting shown in Figure 4, the local diverter module of described business is positioned at normal base station inside, is a part for base station sub-system.The local diverter module place of described business there is physical location, can determine according to the concrete deployment scenario of network.The local diverter module of described business comprises service distributing control module (built-in local service flow-dividing control strategy), service distributing forwarding engine.

The physical connection of operation maintenance center's (OperationandMaintenanceCenter is called for short OMC) and base station is put aside in Fig. 4.For LTE, the local diverter module of described business and normal base station are arranged in same physical entity (normal base station), and the local diverter module of described business is made up of service distributing control module and service distributing forwarding engine.Wherein, described service distributing control module configures (user is arranged by OMC) according to the strategy of user, control described service distributing forwarding engine and PDCP (PacketDataConvergenceProtocol, be called for short PDCP) module cooperative work, realize local service shunting.

Below for Fig. 4 intermediary agent attend to the basic or the fundamental ground shunt method.

See Fig. 5, for the schematic flow sheet of the local method shunted of supporting business that the embodiment of the present invention provides, described method is applied to a kind of base station sub-system, the local diverter module of business that described base station sub-system comprises base station and is made up of service distributing forwarding engine and service distributing control module, the PDCP PDCP module that described service distributing control module controls described service distributing forwarding engine and described base station realizes described method, and the method comprises:

Step 501: described PDCP module obtains the first packet that the first user equipment of described base station service is sent out, when determine the local shunting business of described first user equipment support and the destination address of described first packet be pre-configured be diverted to the local network address or be positioned at pre-configured be diverted to the local network segment time, will described first Packet Generation extremely described service distributing forwarding engine.

Step 502: described service distributing forwarding engine by described first Packet Generation to described destination address, wherein, described first packet in transmitting procedure without core net.

For realizing the shunting of business this locality, whether supporting business this locality is shunted to need the UE1 of predefined access base station, for this reason, before step 501, need to configure user property numbering (SubscriberProfileID corresponding to local shunting business in base station side, be called for short SPID), be diverted to the local object network address or the network segment, for the user supporting local service shunting, also need to do corresponding configuration at core network mobility Management Unit (MobilityManagementEntity is called for short MME).

In agreement 3GPPTS36.413, SPID is defined as follows shown in table:

In embodiments of the present invention, be used to specify user equipment (UE) supporting business this locality shunting of particular type by defining a SPID, the SPID of this SPID and other particular traffic type does not conflict, and concrete using method is as follows:

Each communication apparatus UE can only configure at most a SPID, service class indication.Such as UEA supporting business this locality shunting, the shunting of UEB supporting business this locality and frequency priority service, UEC does not support specific business.In MME side, respectively SPIDA and SPIDB is configured to UEA and UEB, and SPID need not be configured for UEC.In base station side, need the SPID configuring the shunting of supporting business this locality to be SPIDA and SPIDB, the SPID of frequency priority service is SPIDB to need configuration to support.For Article 1 UE message base station being issued MME, MME can determine the mark such as international mobile subscriber identity (InternationalMobileSubscriberIdentity that the UE in UE message is corresponding, be called for short IMSI), determine to set up in request (InitialContextSetupRequest) the need of band SPID or the need of band SPIDA or SPIDB at the initial context of loopback.Attention: the Article 1 UE message (i.e. initialising subscriber information InitaialUEMessage) base station being issued MME is assigned with an interim mark to UE, still maintain this in the initial context foundation request of MME loopback to identify, such base station can identify according to this carrying in initial context foundation request and SPID situation determine this UE whether shunt by supporting business this locality.Such as, when the SPID carried in clear and definite initial context foundation request is SPIDA or SPIDB, then this UE supporting business this locality shunting; When SPID is SPIDB, then in the operations such as switching, also consider frequency priority simultaneously.

Visible, when communication apparatus and other conventional communication apparatus networking of supporting business this locality shunting, the embodiment of the present invention is in Mobility Management Entity MME side, to with each communication apparatus of international mobile subscriber identity IMSI for mark (or other type identification), configure and whether support that associated user attribute number SPID configures concrete SPID value with when support associates SPID.In base station side, the SPID that the local shunting business of configuration supporting business is corresponding, notes this more than one of SPID possibility.During communication apparatus access MME, MME sets up in request message (InitialContextSetupRequest) at the initial context being handed down to base station, can not carry SPID or carry the SPID of this communication apparatus according to configuration.The initial context that base station parsing MME sends sets up request message, determines whether with SPID and obtains concrete value: if without SPID, then this initial context sets up the supporting business this locality shunting of communication apparatus corresponding to request message; If there is SPID, then inquiry base station side configures about the SPID of business this locality shunting, if find to mate, illustrate that this initial context sets up communication apparatus supporting business this locality shunting corresponding to request message, otherwise explanation is not supported.It should be noted that, in order to safety, the permanent identification (such as IMSI) of communication apparatus is not known in base station, therefore the communication apparatus of supporting business this locality shunting cannot be determined in base station according to mark, but can determine to need the communication apparatus of supporting business this locality shunting by the SPID configuration that the initial context that MME issues sets up related content in request message and base station side.

In summary, at least one user property numbering SPID that local shunting business that described base station side is pre-configured is corresponding, the Mobility Management Entity MME side different SPID that has been the user device configuration of each support local shunting business in advance; Based on this, in step 501, the defining method of the local shunting business of described first user equipment support comprises:

Signalling exchange schematic diagram shown in Figure 6, below in the mode of Signalling exchange, introduces base station and utilizes SPID to determine the user equipment (UE) mode whether supporting business this locality is shunted.

Step 601:eNodeB is at the SPID (enable transmission shunts corresponding SPID about business this locality) of local configuration service this locality shunting correspondence, such as SPIDA and SPIDB.

Step 602:UE sends PRACH lead PRACHPreamble to eNodeB.

Step 603:eNodeB calculates the Timing Advance TimingAdvance of UE according to PRACHPreamble, and send accidental access response (RandomAccessResponse to UE, referred to as RAR) message, carry Timing Advance in described RAR message.

Step 604:UE sends wireless heterogeneous networks (RadioResurceControl is called for short RRC) connection request message, i.e. RRCConnectionRequest to eNodeB.

Step 605:eNodeB sends RRC connection establishment message to UE, i.e. RRCConnectionSetup (RAContentionResolution).

Step 606:UE sends RRC connection setup complete message (comprising attachment request, PDN connection request) to eNodeB, i.e. RRCConnectionSetupComplete (AttachRequest/PDNConnectivityRequest).

Step 607:eNodeB sends initialising subscriber information (comprising attachment request, PDN connection request) to MME, i.e. InitaialUEMessage (AttachRequest/PDNConnectivityRequest).

Step 608:MME sends initial context to eNodeB and sets up request message (comprise attachment request, activate default EPS bearing context request), i.e. InitaialContextSetupRequest (AttachRequest/ActivateDefaultEPSBearerContextRequest), may carry SPID corresponding to UE in this message.

Step 609:eNodeB sends RRC to UE and connects reconfiguration message (comprise attachment request, activate default EPS bearing context request), i.e. RRCConnectionReconfiguration (AttachRequest/ActivateDefaultEPSBearerContextRequest).

Step 6010:eNodeB sends RRC connection to UE and has reshuffled message, i.e. RRCConnectionReconfigurationComplete.

Step 6011:eNodeB sends initial context to MME and arranges response message, i.e. InitaialContextSetupResponse.

Step 6012:UE sends uplink information message transfer (comprising attachment to complete, activate default EPS bearing context and complete) to eNodeB, i.e. UplinkInformationTransfer (AttachComplete/ActivateDefaultEPSBearerContextAccept).

Step 6013:eNodeB sends up NAS message transfer (comprising attachment to complete, activate default EPS bearing context and complete) to MME, i.e. UplinkNASTransport (AttachComplete/ActivateDefaultEPSBearerContextAccept).

The initial context that SPID and MME that step 6014:eNodeB configures according to this locality issues sets up the information in request, determines this UE whether shunt by supporting business this locality.Such as, when the SPID configured for UE is SPIDA and carries SPIDA in initial context foundation request, then determine this UE supporting business this locality shunting, when the SPID configured for UE is SPIDA and does not carry SPIDA in initial context foundation request, then determine this UE supporting business this locality shunting.

In embodiments of the present invention, after base station receives the first packet that UE1 sends out, PDCP module detects described first packet, the local object network address or the network segment is diverted to because base station side has been configured with, find that its destination address (i.e. the IP grouping destination address of PDCP carrying) is user configured shunting address or is positioned at user configured address field by analyzing described first packet, and determine that UE1 supports local shunting business according to the method described above, then illustrate and can carry out this locality shunting to described first packet, now described PDCP module by described first Packet Generation to service distributing forwarding engine, so that described service distributing forwarding engine carries out this locality shunting according to step 502.

For the first packet UE1 sending to base station, its destination address is the public network address that configured or belongs to the local network segment configured, and to this, step 502 exists following two kinds of implementations:

If 1, described service distributing forwarding engine determines that the destination address of described first packet is the IP address of the second user equipment (UE) 2 of described base station service, namely UE1 and UE2 has accessed same base station.

In this case, described first packet is directly issued to described second subscriber equipment by described PDCP module by described service distributing forwarding engine.That is, for Fig. 1, if the object IP address of described first packet is for being linked into the IP address of the UE2 of this base station (such as base station 1), then described first packet is issued to UE2 through PDCP module again, and require no the GPRS Tunnel Protocol (GPRSTunnellingProtocolfortheuserplane of user level, be called for short GTP-U) process, namely described first packet require no GTP-U process enter core net and loopback to UE2, now, the service route that user UE1 with UE2 communicates is: UE1<-> base station 1<->UE2.

If 2, described service distributing forwarding engine determines that the destination address of described first packet is at the server in same geographical position or other network equipment with described base station, namely UE1 and server or other network equipment (such as local application server, such as Campus Network Server) are in same geographical position.

In this case, described first packet is directly sent to described server or other network equipment through switch by described service distributing forwarding engine.That is, see Fig. 1, if the object IP address of described first packet is and this base station (the such as base station 1) Campus Network Server in same geographical position, now need that Campus Network Server is the same with base station to be hung on switches, namely server is connected with switch, then described first packet need not send into core net after GTP-U process, but described first packet is directly issued switch by network interface by service distributing forwarding engine, in the Campus Network Server that described first Packet Generation is extremely connected with oneself by switch again, now, the service route that the server (such as Campus Network Server) of the base station that user UE1 accesses and it accesses in same geographical position is corresponding is: UE1<-> base station 1<-> switch <-> Campus Network Server.

To sum up, when finding that the destination address of described first packet is the IP address of the UE2 of this base station service, then described first packet is given PDCP resume module, directly to issue UE2 without core net by service distributing forwarding engine again; When the destination address of described first packet of described PDCP module discovery is that then described first packet is directly sent to server or other network equipment by network interface through switch by service distributing forwarding engine with this base station at the server in same geographical position or other network equipment; When aforementioned condition does not meet, PDCP layer service data are given GTP-U process.

Foregoing describes the method for upstream data bag (described first packet) being carried out to local shunting, and further, the embodiment of the present invention also comprises the processing method to downlink data packet (the second packet), comprising:

Described service distributing forwarding engine obtains the second packet issued with the server of described base station in same geographical position or other network equipment through switch, when determining that the destination address of described second packet is the IP address of the first user equipment UE 1 of described base station service, then directly described second packet is issued to described first user equipment UE 1 by described PDCP module.That is, IP message i.e. second packet of service distributing forwarding engine to down direction (namely base station is to UE direction) is utilized to carry out detection process, if find that the object IP address of the second packet received is the IP address of the UE of this base station of access, it is such as the IP address of the first user equipment UE 1 of this base station of access, then described second packet is given PDCP module by described service distributing forwarding engine, by network interface, described second packet is issued to UE1 by PDCP module.

In embodiments of the present invention, store at least one in described PDCP module and transmit, each subscriber equipment transmitting corresponding supporting business this locality shunting.For UE1, if UE1 supporting business this locality is shunted and the destination address of the first packet that UE1 sends out is pre-configured shunting address or is positioned at the pre-configured network segment, now, before first first packet of UE1 being carried out to this locality shunting, establishment one is needed to transmit, this is transmitted and comprises: " UE1 unique identification in a base station, carrying ID (being used for distinguishing the type of service of described first packet; such as voice, data etc.), the IP source of packets address (i.e. the IP address of UE1) that PDCP carries ".Therefore, in step 501, when determine the local shunting business of described first user equipment support and the destination address of described first packet be pre-configured be diverted to the local network address or be positioned at pre-configured be diverted to the local network segment time after, the embodiment of the present invention comprises further: if do not store in described PDCP module and corresponding the transmitting of described first user equipment, then create and corresponding the transmitting of described first user equipment, wherein, the source address of described first packet is comprised with corresponding the transmitting of described first user equipment.

It should be noted that, transmit once establish, just can carry out the shunting of business this locality to the UE of SPID mark.When UE PDCP carrying that is deleted or this UE in base station is deleted, corresponding transmitting is deleted.

Based on to the establishment of transmitting, described service distributing forwarding engine determines that the destination address of described second packet is the IP address of the first user equipment UE 1 of access described base station service by the following method: the IP destination address for described second packet is not the IP address of this base station, the destination address of described second packet mates with the source address in all transmitting by described service distributing forwarding engine, if the match is successful, and the source address matched is the IP address of the first user equipment of described base station service, if namely described second packet destination address and with UE1 corresponding transmit in " the IP source of packets address that PDCP carries " identical, then determine that the destination address of described second packet is the IP address of described first user equipment.

In addition, after the destination address of described second packet mates with the source address in all transmitting by described service distributing forwarding engine, if it fails to match, then when determining that the destination address of described second packet is the IP address of the second user equipment (UE) 2 of described base station service, and when determining that described second user equipment (UE) 2 supports local shunting business, utilize described PDCP module creation and corresponding the transmitting of described second user equipment (UE) 2, wherein, corresponding with described second subscriber equipment to transmit: " UE2 unique identification in a base station, carry ID and (be used for distinguishing the type of service of described second packet, such as voice, data etc.), the IP grouping destination address of PDCP carrying is the destination address (i.e. the IP address of UE2) of described second packet ".Then described second packet is directly issued to described second subscriber equipment by described PDCP module by described service distributing forwarding engine.

In embodiments of the present invention, determine that described second user equipment (UE) 2 supports local shunting business by the following method:

Due at least one user property numbering SPID that the pre-configured local shunting business of described base station side is corresponding, the Mobility Management Entity MME side different SPID that has also been the user device configuration of each support local shunting business in advance.Based on this, described base station is receiving after initial context that MME issues sets up request message, the SPID that this locality configures is mated with the SPID that described initial context sets up described second subscriber equipment carried in request message, if the match is successful, then determine that local shunting business supported by described second subscriber equipment.Related content Signalling exchange shown in Figure 6 figure and described first user equipment support the defining method of local shunting business.

Before carrying out local service shunting, business forwarding is carried out first according to the conventional method in base station, and determines the IP address of the UE that this base station is served during this period, and concrete grammar is as follows:

IP grouping destination address i.e. this PDCP of descending PDCP carrying carries the IP address of corresponding UE, and IP source of packets address i.e. this PDCP of up PDCP carrying carries the IP address of corresponding UE, namely can be obtained by the IP message content of analysis PDCP carrying.Note being NAS signaling to UE distributing IP address, be transparent to base station, but can be known by study by this method.The IP address obtained as PDCP service bearer a parameter and retain, only have this UE to support local shunting (being determined by SPID) and this parameter sky when just start above-mentioned analysis action to reduce the load of system.Therefore, before described service distributing control module controls described service distributing forwarding engine and described PDCP module realizes described method, also comprise:

Business forwarding is conventionally carried out to the upstream data bag obtained in described base station, if determine, the source address of described upstream data bag is the IP address of the subscriber equipment of described base station service, then preserve this IP address; Business forwarding is conventionally carried out to the downlink data packet obtained in described base station, if determine, the destination address of described downlink data packet is the IP address of the subscriber equipment of described base station service, then preserve this IP address.

Visible, before carrying out the shunting of business this locality, base station has saved the IP address of the UE of oneself service, and according to the IP address of preserving, the embodiment of the present invention can determine that the destination address of described first packet that UE1 sends out is the IP address of the second subscriber equipment of described base station service by the following method:

The destination address of described first packet and the IP address of preserving in described base station (i.e. this base station serve the IP address of all UE) are mated, if the IP address that the match is successful and match is the IP address of described second subscriber equipment, then determine that the destination address of described first packet is the IP address of the second subscriber equipment of described base station service; If it fails to match, then by analyzing described first packet, determine that whether the destination address of described first packet is the IP address of the second subscriber equipment of described base station service, if, just directly described first packet is issued to described second subscriber equipment by described PDCP module, the IP address of the second subscriber equipment analyzed also is kept at base station simultaneously.

The embodiment of the present invention can determine that the destination address of described second packet is the IP address of the second subscriber equipment of described base station service equally by the following method:

The destination address of described second packet and the IP address of preserving in described base station (i.e. this base station serve the IP address of all UE) are mated, if the IP address that the match is successful and match is the IP address of described second subscriber equipment, then determine that the destination address of described second packet is the IP address of the second subscriber equipment of described base station service; If it fails to match, then by analyzing described second packet, determine that whether the destination address of described second packet is the IP address of the second subscriber equipment of described base station service, if, just directly described second packet is issued to described second subscriber equipment by described PDCP module, the IP address of the second subscriber equipment analyzed also is kept at base station simultaneously.

In embodiments of the present invention, for the destination address from service distributing forwarding engine down direction packet, its be not described PDCP module store transmitting in IP address, neither the IP address of UE of base station service, now, by down direction data packet discarding.

See Fig. 7, for the composition schematic diagram of the base station sub-system that the embodiment of the present invention provides, the local diverter module of business that described base station sub-system comprises base station and is made up of service distributing forwarding engine 702 and service distributing control module 703, the PDCP PDCP module 701 that described service distributing control module 703 controls described service distributing forwarding engine 702 and described base station realizes following functions:

Described PDCP module 701 obtains the first packet that the first user equipment of described base station service is sent out, when determine the local shunting business of described first user equipment support and the destination address of described first packet be pre-configured be diverted to the local network address or be positioned at pre-configured be diverted to the local network segment time, will described first Packet Generation extremely described service distributing forwarding engine 702;

Described service distributing forwarding engine 702 by described first Packet Generation to described destination address, wherein, described first packet in transmitting procedure without core net.

In embodiments of the present invention, the described service distributing control module 703 described service distributing forwarding engine 702 of concrete control and described PDCP module 701 realize following functions:

If described service distributing forwarding engine 702 determines that the destination address of described first packet is the IP address of the second subscriber equipment of described base station service, then directly described first packet is issued to described second subscriber equipment by described PDCP module 701;

If described service distributing forwarding engine 702 determines that the destination address of described first packet is at the server in same geographical position or other network equipment with described base station, described server or other network equipment are connected with described switch, then direct described first packet is sent to described server or other network equipment through described switch.

In embodiments of the present invention, described service distributing control module 703 also controls described service distributing forwarding engine 702 and described PDCP module 701 realizes following functions:

Described service distributing forwarding engine 702 obtains the second packet issued with the server of described base station in same geographical position or other network equipment through switch, when determining that the destination address of described second packet is the IP address of the first user equipment of described base station service, then directly described second packet is issued to described first user equipment by described PDCP module 701.

In embodiments of the present invention, store at least one in described PDCP module 701 and transmit, eachly transmit a corresponding subscriber equipment; Described service distributing control module 703 also controls described PDCP module 701 and realizes following functions:

When described PDCP module determine the local shunting business of described first user equipment support and the destination address of described first packet be pre-configured be diverted to the local network address or be positioned at pre-configured be diverted to the local network segment time, if do not store in described PDCP module 701 and corresponding the transmitting of described first user equipment, then create and corresponding the transmitting of described first user equipment, wherein, the source address of described first packet is comprised with corresponding the transmitting of described first user equipment;

Described service distributing control module 703 specifically controls described service distributing forwarding engine 702 and realizes following functions:

The destination address of described second packet mates with the source address in all transmitting by described service distributing forwarding engine 702, if the match is successful and the source address matched is the IP address of first user equipment of described base station service, then determine that the destination address of described second packet is the IP address of described first user equipment.

After the destination address of described second packet mates with the source address in all transmitting by described service distributing forwarding engine 702, if it fails to match, then when determining that the destination address of described second packet is the IP address of the second subscriber equipment of described base station service and determines that local shunting business supported by described second subscriber equipment, described PDCP module 701 is utilized to create and corresponding the transmitting of described second subscriber equipment, wherein, the destination address of described second packet is comprised with corresponding the transmitting of described second subscriber equipment;

Directly described second packet is issued to described second subscriber equipment by described PDCP module 701.

In embodiments of the present invention, at least one user property numbering SPID that local shunting business that described base station side is pre-configured is corresponding, the Mobility Management Entity MME side different SPID that has been the user device configuration of each support local shunting business in advance;

Described base station in embodiments of the present invention, also for controlling before described service distributing forwarding engine 702 and described PDCP module 701 realize described method in described service distributing control module 703, conventionally business forwarding is carried out to the upstream data bag obtained, if determine, the source address of described upstream data bag is the IP address of the subscriber equipment of described base station service, then preserve this IP address; Business forwarding is conventionally carried out to the downlink data packet obtained in described base station, if determine, the destination address of described downlink data packet is the IP address of the subscriber equipment of described base station service, then preserve this IP address;

Described base station in embodiments of the present invention, also for controlling before described service distributing forwarding engine and described PDCP module realize described method in described service distributing control module, conventionally business forwarding is carried out to the upstream data bag obtained, if determine, the source address of described upstream data bag is the IP address of the subscriber equipment of described base station service, then preserve this IP address; Business forwarding is conventionally carried out to the downlink data packet obtained in described base station, if determine, the destination address of described downlink data packet is the IP address of the subscriber equipment of described base station service, then preserve this IP address;

In embodiments of the present invention, the local diverter module of described business is at described inside of base station or between described base station and switch.

As seen through the above description of the embodiments, those skilled in the art can be well understood to the mode that all or part of step in above-described embodiment method can add required general hardware platform by software and realizes.Based on such understanding, technical scheme of the present invention can embody with the form of software product the part that prior art contributes in essence in other words, this computer software product can be stored in storage medium, as ROM/RAM, magnetic disc, CD etc., comprising some instructions in order to make a computer equipment (can be personal computer, server, or the network communication equipments such as such as media gateway, etc.) perform the method described in some part of each embodiment of the present invention or embodiment.

It should be noted that, for system disclosed in embodiment, because it corresponds to the method disclosed in Example, so description is fairly simple, relevant part illustrates see method part.

Also it should be noted that, in this article, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or operating space, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.

To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.

Claims

1. the method for supporting business this locality shunting, it is characterized in that, described method is applied to a kind of base station sub-system, the local diverter module of business that described base station sub-system comprises base station and is made up of service distributing forwarding engine and service distributing control module, the PDCP PDCP module that described service distributing control module controls described service distributing forwarding engine and described base station realizes described method, and described method comprises:

2. method according to claim 1, is characterized in that, described first Packet Generation to described destination address, comprises by described service distributing forwarding engine:

3. method according to claim 1, is characterized in that, described method also comprises:

4. method according to claim 3, is characterized in that, stores at least one and transmit in described PDCP module, eachly transmits a corresponding subscriber equipment; Described when determine the local shunting business of described first user equipment support and the destination address of described first packet be pre-configured be diverted to the local network address or be positioned at pre-configured be diverted to the local network segment time after, also comprise:

5. method according to claim 4, is characterized in that, described service distributing forwarding engine also comprises after being mated with the source address in all transmitting by the destination address of described second packet:

6. method according to claim 1, it is characterized in that, at least one user property numbering SPID that local shunting business that described base station side is pre-configured is corresponding, the Mobility Management Entity MME side different SPID that has been the user device configuration of each support local shunting business in advance;

7. method according to claim 5, it is characterized in that, at least one user property numbering SPID that local shunting business that described base station side is pre-configured is corresponding, the Mobility Management Entity MME side different SPID that has been the user device configuration of each support local shunting business in advance;

8. method according to claim 2, is characterized in that, before described service distributing control module controls described service distributing forwarding engine and described PDCP module realizes described method, also comprises:

9. method according to claim 5, is characterized in that, before described service distributing control module controls described service distributing forwarding engine and described PDCP module realizes described method, also comprises:

10. the method according to any one of claim 1 to 9, is characterized in that, the local diverter module of described business is at described inside of base station or between described base station and switch.

11. 1 kinds of base station sub-systems, it is characterized in that, the local diverter module of business that described base station sub-system comprises base station and is made up of service distributing forwarding engine and service distributing control module, the PDCP PDCP module that described service distributing control module controls described service distributing forwarding engine and described base station realizes following functions:

12. base station sub-systems according to claim 11, is characterized in that, described service distributing control module specifically controls described service distributing forwarding engine and described PDCP module realizes following functions:

13. base station sub-systems according to claim 11, is characterized in that, described service distributing control module also controls described service distributing forwarding engine and described PDCP module realizes following functions:

14. base station sub-systems according to claim 13, is characterized in that, store at least one and transmit in described PDCP module, eachly transmit a corresponding subscriber equipment; Described service distributing control module also controls described PDCP module and realizes following functions:

15. base station sub-systems according to claim 14, is characterized in that, described service distributing control module also controls described service distributing forwarding engine and described PDCP module realizes following functions:

16. base station sub-systems according to claim 11, it is characterized in that, at least one user property numbering SPID that local shunting business that described base station side is pre-configured is corresponding, the Mobility Management Entity MME side different SPID that has been the user device configuration of each support local shunting business in advance;

17. base station sub-systems according to claim 15, it is characterized in that, at least one user property numbering SPID that local shunting business that described base station side is pre-configured is corresponding, the Mobility Management Entity MME side different SPID that has been the user device configuration of each support local shunting business in advance;

18. base station sub-systems according to claim 12, is characterized in that,

Described base station, also for controlling before described service distributing forwarding engine and described PDCP module realize described method in described service distributing control module, conventionally business forwarding is carried out to the upstream data bag obtained, if determine, the source address of described upstream data bag is the IP address of the subscriber equipment of described base station service, then preserve this IP address; Business forwarding is conventionally carried out to the downlink data packet obtained in described base station, if determine, the destination address of described downlink data packet is the IP address of the subscriber equipment of described base station service, then preserve this IP address;

19. base station sub-systems according to claim 15, is characterized in that,

20., according to claim 11 to the base station sub-system described in 19 any one, is characterized in that, the local diverter module of described business is at described inside of base station or between described base station and switch.