CN104796950A - Optimization method and device for cell switching process - Google Patents
Optimization method and device for cell switching process Download PDFInfo
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- CN104796950A CN104796950A CN201510154624.3A CN201510154624A CN104796950A CN 104796950 A CN104796950 A CN 104796950A CN 201510154624 A CN201510154624 A CN 201510154624A CN 104796950 A CN104796950 A CN 104796950A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
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Abstract
The invention discloses an optimization method and device for a cell switching process and aims to solve the problem that a large amount of s1 switching appears in a Femto network, and the burden of a core network is excessively heavy. The method includes: a family base station gateway transmits a switching request message to a target family base station on the basis of a received switching demand of a source family base station; after the switching request confirmation message returned by the target base station is received and the fact that the target family base station completes resource allocation is confirmed, a path switching request message is transmitted to a mobile management entity (MME) to request the MME to exchange the downlink GTP tunnel of the source family base station to the GTP tunnel endpoint of the target family base station; after the path switch request confirmation message returned by the MME is received, a switching command message is transmitted to the source family base station to instruct the source family base station to complete subsequent switching confirmation. By the method, s1 switching signaling is converged by the family base station gateway, s1 switching time is reduced, and core network burden is relieved.
Description
Technical field
The present invention relates to the communications field, particularly relate to a kind of optimization method for cell merge flow process and device.
Background technology
Along with the rapid growth of wireless data service and the continuous increase of indoor wireless transmission demand, Femto system starts commercialization, the main network element of Femto system has Femto base station, security gateway, Femto gateway, Femto network management system, its logical architecture as shown in Figure 1, wherein, Long Term Evolution (Long TermEvolvement, LTE) Femto is (also known as HeNB, FetmoCell) for the user of small area is (as residential quarters, colleges and universities, office building) Cellular Networks access service is provided, usual employing fixed network broadband is as return network, by corresponding security mechanism core network access, for user provides the business experience consistent with macrocellular net, security gateway (Security GateWay, SecGW) replaces the two-way authentication of core net realization and Femto, Femto gateway converges the signaling between Femto base station and Mobility Management Entity (Management Entity Mobility, MME) also known as 4G femto gateway (Home enodeb GateWay, HeGW), Femto network management system carries out location test to Femto base station, carries out parameter configuration and performance management to Femto base station, security gateway, Femto gateway, L-GW provides the function of local IP access, if deploy local gateway (LocalGateWay, L-GW), so L-GW is also by security gateway and core network communications.
When Femto base station any wide-area deployment, the number of users supported due to this Home eNodeB is few, the scope of quorum sensing inhibitor is little, mainly be used in intensive place, as residential quarters, colleges and universities, office building etc., in this case, intensive Home eNodeB is arranged, terminal can be made to beat frequently between these Home eNodeB a resident i.e. terminal just resident community but also be switched to another community, cause in Femto network and occur that a large amount of s1 switches, the burden of such meeting severe exacerbations LTE core network, and due to adding of Femto gateway, the transmission of a large amount of s1 hand off signaling message, also add the time of terminal switch, reduce the operating efficiency of terminal, the overall performance of further influential system.
Summary of the invention
The object of this invention is to provide a kind of optimization method for cell merge flow process and device, occur that s1 switches in a large number to solve in Femto network, cause the problem that over-burden for core net.
The object of the invention is to be achieved through the following technical solutions:
For an optimization method for cell merge flow process, comprising:
Femto gateway, based on the switching demand of the source Home eNodeB received, sends handover request message to target household base station, indicates described target household base station to carry out the Resourse Distribute of being correlated with for described handover request;
Described femto gateway is after receiving the switching request acknowledgement message that described target BS returns, confirm that described target household base station completes the Resourse Distribute for described handover request, and to Mobility Management Entity MME transmit path handover request message, ask described MME to exchange the GTP tunnel end points of descending GTP tunnel to target household base station of source Home eNodeB;
After described femto gateway receives the path switching request acknowledgement message that described MME returns, send switching command message to source Home eNodeB, indicate described source Home eNodeB to complete follow-up switching and confirm.
By femto gateway, s1 hand off signaling is converged like this, decrease the time that s1 switches, Femto gateway the is shared handoff procedure of core net, decrease the s1 hand off signaling flow process of core net in femto network, alleviate the burden of core net; Optimization for switching flow realizes simple, and does not need to carry out transformation and upgrade to existing LTE core network, and feasibility is strong.
Optionally, femto gateway, based on the switching demand of the source Home eNodeB received, sends handover request message to target household base station, specifically comprises:
Described femto gateway, after the handoff requirement message receiving source Home eNodeB transmission, based on the switching demand of the source Home eNodeB received, is searched the resource information of the subscriber equipment of initiating switching demand and sends handover request message to target household base station.
Optionally, described path handover request message at least comprises the S1 application identities of MME side and base station user equipment, allow to set up carrying list information, the security capabilities of E-UTRAN Cell Global Identity, tracing area mark and subscriber equipment, described path switching request acknowledgement message at least comprises the S1 application identities of MME side and base station user equipment, refusal sets up carrying list information, safe context.
Optionally, described femto gateway sends switching command message to source Home eNodeB, indicates described source Home eNodeB to complete follow-up switching and confirms, specifically comprise:
Described femto gateway sends switching command message to source Home eNodeB, after equipment for indicating user is switched to target household base station from source Home eNodeB, receive the base station state message transfer that described source Home eNodeB returns, described base station state message transfer at least comprises the S1 application identities of MME side and base station user equipment, base station state transferring content.
Optionally, described femto gateway comprises after receiving the base station state message transfer that described source Home eNodeB returns further:
Described femto gateway sends MME state transfer message to described target household base station, the switching indicating described target household base station to carry out subscriber equipment confirms, and accepts the switch acknowledgment message that target household base station returns, and confirms to switch complete.
A kind of femto gateway, comprising:
First communication unit, for the switching demand based on the source Home eNodeB received, sends handover request message to target household base station, indicates described target household base station to carry out the Resourse Distribute of being correlated with for described handover request;
Second communication unit, for after receiving the switching request acknowledgement message that described target BS returns, confirm that described target household base station completes the Resourse Distribute for described handover request, and to Mobility Management Entity MME transmit path handover request message, ask described MME to exchange the GTP tunnel end points of descending GTP tunnel to target household base station of source Home eNodeB;
Third communication unit, for after receiving the path switching request acknowledgement message that returns of described MME, sends switching command message to source Home eNodeB, indicates described source Home eNodeB to complete follow-up switching and confirms.
By femto gateway, s1 hand off signaling is converged like this, decrease the time that s1 switches, Femto gateway the is shared handoff procedure of core net, decrease the s1 hand off signaling flow process of core net in femto network, alleviate the burden of core net; Optimization for switching flow realizes simple, and does not need to carry out transformation and upgrade to existing LTE core network, and feasibility is strong.
Optionally, based on the switching demand of source Home eNodeB received, when sending handover request message to target household base station, described first communication unit specifically for:
After the handoff requirement message receiving source Home eNodeB transmission, based on the switching demand of the source Home eNodeB received, search the resource information of the subscriber equipment of initiating switching demand and send handover request message to target household base station.
Optionally, the described path handover request message that described second communication unit sends at least comprises the S1 application identities of MME side and base station user equipment, allow to set up carrying list information, the security capabilities of E-UTRAN Cell Global Identity, tracing area mark and subscriber equipment, the described path switching request acknowledgement message that described third communication unit receives at least comprises the S1 application identities of MME side and base station user equipment, refusal sets up carrying list information, safe context.
Optionally, send switching command message to source Home eNodeB, indicate described source Home eNodeB to complete follow-up switching when confirming, described third communication unit specifically for:
Switching command message is sent to source Home eNodeB, after equipment for indicating user is switched to target household base station from source Home eNodeB, receive the base station state message transfer that described source Home eNodeB returns, described base station state message transfer at least comprises the S1 application identities of MME side and base station user equipment, base station state transferring content.
Optionally, after receiving the base station state message transfer that described source Home eNodeB returns, described third communication unit is further used for:
Send MME state transfer message to described target household base station, the switching indicating described target household base station to carry out subscriber equipment confirms, and accepts the switch acknowledgment message that target household base station returns, and confirms to switch complete.
Accompanying drawing explanation
Fig. 1 is the configuration diagram of Femto network in prior art;
Fig. 2 is the protocol interface schematic diagram in prior art in Femto network;
Fig. 3 is the switching flow schematic diagram in prior art in Femto network;
Fig. 4 is the optimization method schematic flow sheet for cell merge flow process in the embodiment of the present invention;
Fig. 5 is the cell merge schematic flow sheet in the embodiment of the present invention in Femto network;
Fig. 6 is the optimization device structural representation for cell merge flow process in the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, is not 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.
Protocol interface in Femto network can be consulted shown in Fig. 2, in Femto network, is a macro base station from MME Femto gateway.From Femto base station angle, Femto gateway is the convergence that MME, a Femto gateway passes through to Femto base station, forms macro base station in logic, presents MME.Femto base station, Femto gateway, be all connected by S1 interface between MME, Femto does not support X2 interface between base station.
Concrete, when terminal moves between femto base station, the s1 triggered in gateway switches, and has following signaling process, specifically consults shown in Fig. 3.
Step1: Femto base station, source sends switching demand (HANDOVERREQUIRED) message to HEGW (i.e. Femto gateway) makes HEGW notify MME, containing following parameter in message:
A) MME side subscriber equipment S1 application identities (MME UE S1AP ID);
B) source base station side subscriber equipment S1 application identities (eNB UE S1AP ID);
C) (intra LTE) is switched in switching type (handover type) i.e. LTE system;
D) reason (cause);
E) target Femto Base Station Identification (Target ID);
F) source is to the transferring content (Source to Target Transparent Container) of target, encodes during coding by the transferring content of Femto base station, source to target Femto base station (Target Femtocell).
After Step2:HEGW receives HANDOVER REQUIRED message, to MME transparent transmission HANDOVER REQUIRED message.
Step3:MME searches UE resource after receiving HANDOVER REQUIRED message, sends handover request (HANDOVER REQUEST) message, make HEGW notification target Femto base station, comprise following parameter in handover request message to HEGW:
A) MME side subscriber equipment S1 application identities (MME UE S1AP ID);
B) (intra LTE) is switched in switching type (handover type) i.e. LTE system;
C) reason (cause);
D) the maximum guarantee transmission rate (UE Aggregate Maximum Bit Rate) of subscriber equipment;
E) evolution RAB (the Evolved Radio Access Bearer set up is needed, E-RAB), comprise Tunnel End Point Identifier mark (GPRS Tunneling Protocol-Tunnel EndPoint Identifier, GTP-TEID), the RAB quality related parameter (E-RAB Level QoSParameters) of wireless access bearing sign (E-RAB ID), transport layer address (Transport Layer Address), GPRS Tunnel Protocol;
F) source is to the transferring content (Source to Target Transparent Container) of target: encode by the transferring content of Femto base station, source to target Femto base station (Target Femtocell) during coding
G) user equipment safety capability (UE Security capabilities);
H) safe context (security Context).
After Step4:HEGW receives handover request message, to target Femto base station transparent transmission handover request message.
After the HANDOVER REQUEST message that target Femto base station reception MME sends, being that the subscriber equipment of initiating switching demand prepares resource, is the UE reservation of resource needing to prepare switching.
After Step5: target Femto base station completes Resourse Distribute, send Handover Request Acknowledge (HANDOVER REQUEST ACKNOWLEDGE) message to HEGW, make HEGW notify MME; Comprise in this switching request acknowledgement message:
A) MME side subscriber equipment S1 application identities (MME UE S1AP ID);
B) target BS side subscriber equipment S1 application identities (eNB UE S1AP ID);
C) RAB allows list (E-RABs Admitted List), comprises wireless access bearing sign (E-RAB ID); Transport layer address (Transport Layer Address); Tunnel End Point Identifier mark (the GPRS Tunneling Protocol-Tunnel End Point Identifier of GPRS Tunnel Protocol, GTP-TEID), down link (Downlink, DL) transport layer address (this is optional); Down link GTP-TEID (this is optional); Up link (Uplink, UL) transport layer address (this is optional); Up link GTP-TEID (this is optional) etc.;
D) target is to the transferring content (Target to Source Transparent Container) in source, and during coding, according to target encode to the transferring content of Femto base station, source in Femto base station;
After Step6:HEGW receives switching request acknowledgement message, to this switching request acknowledgement message message of MME transparent transmission.
After Step7:MME receives switching request acknowledgement message message, send switching command (HANDOVER COMMAND) message to HEGW, make HEGW notification source Femto base station.Comprise in this switching command message:
A) MME side subscriber equipment S1 application identities (MME UE S1AP ID);
B) source base station side subscriber equipment S1 application identities (eNB UE S1AP ID);
C) (intra LTE) is switched in switching type (handover type) i.e. LTE system;
D) RAB refusal forwarding list (E-RABs Subject to Forwarding List), this is optional, specifically comprises: E-RAB ID; Downlink transfer layer address (this is optional); Down link GTP-TEID (this is optional); Uplink layer address (this is optional); Up link GTP-TEID (this is optional) etc.;
E) target is to the transferring content (Target to Source Transparent Container) in source, and during coding, according to target encode to the transferring content of Femto base station, source in Femto base station.
After Step8:HEGW receives switching command message, to Femto base station, source transparent transmission switching command message.
Step9: after Femto base station, source receives the switching command message of HEGW transmission, sends base station state transmission (eNB STATUS TRANSFER) message to HEGW gateway, makes HEGW notify MME, comprise following parameter in this base station state message transfer:
A) MME side subscriber equipment S1 application identities (MME UE S1AP ID);
B) source base station side subscriber equipment S1 application identities (eNB UE S1AP ID);
C) base station state transferring content, comprises RAB disarmed state transmission list (E-RABsSubject to Status Transfer List).
After Step10:HEGW receives base station state message transfer, to this base station state message transfer of MME transparent transmission.
After Step11:MME receives base station state message transfer, send MME state transfer (MME STATUS TRANSFER) message to HEGW, make HEGW notification target Femto base station, MME state transfer message comprises following parameter:
A) MME side subscriber equipment S1 application identities (MME UE S1AP ID);
B) target BS side subscriber equipment S1 application identities (eNB UE S1AP ID);
C) base station state transferring content, comprises RAB disarmed state transmission list (E-RABsSubject to Status Transfer List).
After Step12:HEGW receives MME state transfer message, to this MME state transfer message of target Femto base station transparent transmission.
After Step13: target Femto base station receives MME state transfer message, if detect, UE is switched to this base station, sends switch acknowledgment message to HEGW, makes HEGW notify MME, comprises in this switch acknowledgment message:
A) MME side subscriber equipment S1 application identities (MME UE S1AP ID);
B) target BS side subscriber equipment S1 application identities (eNB UE S1AP ID);
C) Evolved UTRAN (Evolved Universal Terrestrial Radio AccessNetwork, E-UTRAN) Cell Global Identity (Cell Global Identifier, CGI);
D) tracking area identification (Tracking Area Identity, TAI).
After Step14:HEGW receives switch acknowledgment message, to this switch acknowledgment message of MME transparent transmission.
Known by the hand off signaling flow process of above-mentioned LTE system, terminal is switched to a switching flow of target BS from source base station, the nearly S1 switching of 14 times has been there is in Femto network, if Home eNodeB is arranged intensive, there will be terminal and beat resident between these Home eNodeB frequently, terminal there will be a large amount of instantaneous switching, like this, both can increase the switching time of terminal, and also can increase the weight of the burden of LTE core network, influential system performance.
Consult shown in Fig. 4, the embodiment of the present invention one provides a kind of optimization method for cell merge flow process, and concrete steps are as follows:
Step 400: femto gateway, based on the switching demand of the source Home eNodeB received, sends handover request message to target household base station, indicates this target household base station to carry out the Resourse Distribute of being correlated with for this handover request.
Concrete, femto gateway is based on the switching demand of the source Home eNodeB received, handover request message is sent to target household base station, specifically comprise: this femto gateway is after the handoff requirement message receiving source Home eNodeB transmission, based on the switching demand of the source Home eNodeB received, search the resource information of the subscriber equipment of initiating switching demand and send handover request message to target household base station.
Step 401: femto gateway is after receiving the switching request acknowledgement message that target BS returns, confirm that target household base station completes the Resourse Distribute for this handover request, and to Mobility Management Entity MME transmit path handover request message, ask this MME to exchange the GTP tunnel end points of descending GTP tunnel to target household base station of source Home eNodeB.
Step 402: after the path switching request acknowledgement message that femto gateway reception MME returns, send switching command message to source Home eNodeB, instruction source Home eNodeB completes follow-up switching and confirms.
It should be noted that the path switching request acknowledgement message sending to the path handover request message of MME and MME to return non-family safe base-station gateway all belongs to the one in X2 signaling process.
Concrete, above-mentioned path handover request message at least comprises the S1 application identities of MME side and base station user equipment, allow to set up carrying list information, the security capabilities of E-UTRAN Cell Global Identity, tracing area mark and subscriber equipment, above-mentioned path switching request acknowledgement message at least comprises the S1 application identities of MME side and base station user equipment, refusal sets up carrying list information, safe context.
Concrete, femto gateway sends switching command message to source Home eNodeB, indicate this source Home eNodeB to complete follow-up switching to confirm, detailed process is: femto gateway sends switching command message to source Home eNodeB, after equipment for indicating user is switched to target household base station from source Home eNodeB, and the base station state message transfer that the source Home eNodeB of reception returns, this base station state message transfer at least comprises the S1 application identities of MME side and base station user equipment, base station state transferring content.
Further, after the base station state message transfer that femto gateway reception source Home eNodeB returns, this femto gateway sends MME state transfer message to target household base station, the switching that indicating target Home eNodeB carries out subscriber equipment confirms, and accept the switch acknowledgment message that target household base station returns, confirm that switching flow is complete.
Preferably, above-mentioned Home eNodeB can be Femto base station or Smallcell base station.
From above-described embodiment, in Femto network, be a macro base station from MME Femto gateway.From Femto base station angle, Femto gateway is a MME.No matter whether there is Femto gateway, the S1 interface between Femto base station and MME is the same, and Femto base station and MME are by Femto gateway separation, and respective and Femto gateway is in two S1 interface networks.Utilize this characteristic, when the s1 occurred in gateway switches, s1 is switched and is divided into two parts: UE--Femtocell---HEGW part, HEGW--MME part between Femto base station.At UE--Femtocell---HEGW in this part, concerning Femtocell and UE, HEGW is exactly that MME, Femtocell carry out s1 switching, needs HEGW to coordinate, and completes s1 and switch in UE--Femtocell---HEGW.And at HEGW--MME in this part, HEGW is macro base station concerning MME, and HEGW converges S1 hand off signaling, realizes adaptive switched in HEGW oneself inside, s1 is switched termination only needs the process after switching to HEGW, MME core net, and namely x2 switches.
Give a user terminal based on the embodiment of the present invention one, Fig. 5 and to be switched to signaling process schematic diagram involved by target Femto base station from Femto base station, source.
Step1: Femto base station, source sends switching demand (HANDOVER REQUIRED message) to HEGW, containing following parameter in this handoff requirement message:
A) MME side subscriber equipment S1 application identities (MME UE S1AP ID);
B) source base station side subscriber equipment S1 application identities (eNB UE S1AP ID);
C) (intra LTE) is switched in switching type (handover type) i.e. LTE system;
D) reason (cause);
E) target Femto Base Station Identification (Target ID);
F) source is to the transferring content (Source to Target Transparent Container) of target, encodes during coding by the transferring content of Femto base station, source to target Femto base station (Target Femtocell).
After Step2:HEGW receives handoff requirement message, search UE resource, send handover request (HANDOVER REQUEST) message to target Femto base station, in this handover request message, comprise following parameter:
A) MME side subscriber equipment S1 application identities (MME UE S1AP ID);
B) (intra LTE) is switched in switching type (handover type) i.e. LTE system;
C) reason cause;
D) the maximum guarantee transmission rate (UE Aggregate Maximum Bit Rate) of subscriber equipment;
E) evolution RAB (the Evolved Radio Access Bearer set up is needed, E-RAB), comprise Tunnel End Point Identifier mark (GPRS Tunneling Protocol-Tunnel EndPoint Identifier, GTP-TEID), the RAB quality related parameter (E-RAB Level QoSParameters) of wireless access bearing sign (E-RAB ID), transport layer address (Transport Layer Address), GPRS Tunnel Protocol;
F) source is to the transferring content (Source to Target Transparent Container) of target: encode by the transferring content of Femto base station, source to target Femto base station (Target Femtocell) during coding
G) user equipment safety capability (UE Security capabilities);
H) safe context (security Context).
After the handover request message that Step3: target Femto base station reception HEGW sends, carry out Resourse Distribute, after completing Resourse Distribute, send Handover Request Acknowledge (HANDOVER REQUESTACKNOWLEDGE) message to HEGW, in this switching request acknowledgement message, comprise following parameter:
A) MME side subscriber equipment S1 application identities (MME UE S1AP ID);
B) target BS side subscriber equipment S1 application identities (eNB UE S1AP ID);
C) RAB allows list (E-RABs Admitted List), comprises wireless access bearing sign (E-RAB ID); Transport layer address (Transport Layer Address); Tunnel End Point Identifier mark (GPRS Tunneling Protocol-Tunnel End Point Identifier, GTP-TEID) of GPRS Tunnel Protocol; Down link (Downlink, DL) transport layer address (this is optional); Down link GTP-TEID (this is optional); Up link (Uplink, UL) transport layer address (this is optional); Up link GTP-TEID (this is optional) etc.;
D) target is to the transferring content (Target to Source Transparent Container) in source, and during coding, according to target encode to the transferring content of Femto base station, source in Femto base station.
After the switching request acknowledgement message that Step4:HEGW receiving target Femto sends base station, to MME transmit path handover request (PATH SWITCH REQUEST) message, this path handover request signaling is X2 signaling, comprises following parameter in this path handover request message:
A) source MME subscriber equipment S1 application identities (Source MME UE S1AP ID);
B) target BS side subscriber equipment S1 application identities (eNB UE S1AP ID);
C) RAB allows list (E-RABs Admitted List), comprises wireless access bearing sign (E-RAB ID); Transport layer address (Transport Layer Address); Down link (Downlink, DL) transport layer address (this is optional); Down link GTP-TEID (this is optional); Up link (Uplink, UL) transport layer address (this is optional); Up link GTP-TEID (this is optional) etc.;
C) Evolved UTRAN (Evolved Universal Terrestrial Radio AccessNetwork, E-UTRAN) Cell Global Identity (Cell Global Identifier, CGI);
D) tracking area identification (Tracking Area Identity, TAI); F) user equipment safety capability (UESecurity Capabilities).
After Step5:MME receives path switching request acknowledgement message, to HEGW transmit path Handover Request Acknowledge (PATH SWITCH REQUEST ACK) message, this path Handover Request Acknowledge signaling is X2 signaling, comprises following parameter in this path switching PLSCONFM message:
A) MME subscriber equipment S1 application identities (Source MME UE S1AP ID), the source MME subscriber equipment S1 application identities in MME subscriber equipment S1 application identities here and Step4 is same mark;
B) target BS side subscriber equipment S1 application identities (eNB UE S1AP ID);
C) RAB refusal forwarding list (E-RABs Subject to Forwarding List), this is optional, specifically comprises: E-RAB ID; Downlink transfer layer address (this is optional); Down link GTP-TEID (this is optional); Uplink layer address (this is optional); Up link GTP-TEID (this is optional) etc.;
D) safe context (Security Context).
After Step6:HEGW receives path switching request acknowledgement message, send switching command (HANDOVER COMMAND) message to Femto base station, source, in this switching command message, comprise following parameter:
A) MME side subscriber equipment S1 application identities (MME UE S1AP ID);
B) source base station side subscriber equipment S1 application identities (eNB UE S1AP ID);
C) (intra LTE) is switched in switching type (handover type) i.e. LTE system;
D) RAB refusal forwarding list (E-RABs Subject to Forwarding List), this is optional, specifically comprises: E-RAB ID; Downlink transfer layer address (this is optional); Down link GTP-TEID (this is optional); Uplink layer address (this is optional); Up link GTP-TEID (this is optional) etc.;
E) target is to the transferring content (Target to Source Transparent Container) in source, and during coding, according to target encode to the transferring content of Femto base station, source in Femto base station.
Step7: after Femto base station, source receives the switching command message of HEGW transmission, sends base station state transmission (eNB STATUS TRANSFER) message to HEGW, comprises following parameter in this base station state message transfer:
A) MME side subscriber equipment S1 application identities (MME UE S1AP ID);
B) source base station side subscriber equipment S1 application identities (eNB UE S1AP ID);
C) base station state transferring content, comprises RAB disarmed state transmission list (E-RABsSubject to Status Transfer List).
After Step8:HEGW receives base station state message transfer, MME state transfer (MME STATUS TRANSFER) message is sent to target Femto base station, this MME state transfer message is identical with the parameter that the base station state message in Step7 comprises, and comprises following parameter:
A) MME side subscriber equipment S1 application identities (MME UE S1AP ID);
B) target BS side subscriber equipment S1 application identities (eNB UE S1AP ID);
C) base station state transferring content, comprises RAB disarmed state transmission list (E-RABsSubject to Status Transfer List).
After Step9: target Femto base station receives MME state transfer message Target Femtocell (Femtocell2), if after detecting that UE is switched to this base station, send to switch to HEGW and confirm (HANDOVER NOTIFY) message, so far switching flow terminates.Following parameter is comprised in this switch acknowledgment message:
A) MME side subscriber equipment S1 application identities (MME UE S1AP ID);
B) target BS side subscriber equipment S1 application identities (eNB UE S1AP ID);
C) Evolved UTRAN (Evolved Universal Terrestrial Radio AccessNetwork, E-UTRAN) Cell Global Identity (Cell Global Identifier, CGI);
D) tracking area identification (Tracking Area Identity, TAI); F) user equipment safety capability (UESecurity Capabilities).
Can be found out by above-mentioned switching flow, converge by switching s1 in femto gateway, can in Femto base station, the intercommunication that s1 and x2 switches is realized between HeGW and MME, furthermore achieved that the restructuring conversion of s1 and x2 signaling in femto gateway, the handoff functionality of Femto gateway to core net is shared.
Based on technique scheme, consult shown in Fig. 6, a kind of femto gateway is provided in the embodiment of the present invention, comprises: the first communication unit 60, second communication unit 61 and third communication unit 62, wherein:
First communication unit 60, for the switching demand based on the source Home eNodeB received, sends handover request message to target household base station, indicates this target household base station to carry out the Resourse Distribute of being correlated with for this handover request;
Second communication unit 61, for after receiving the switching request acknowledgement message that this target BS returns, confirm that this target household base station completes the Resourse Distribute for this handover request, and to Mobility Management Entity MME transmit path handover request message, ask this MME to exchange the GTP tunnel end points of descending GTP tunnel to target household base station of source Home eNodeB;
Third communication unit 62, for after receiving the path switching request acknowledgement message that returns of this MME, sends switching command message to source Home eNodeB, indicates this source Home eNodeB to complete follow-up switching and confirms.
Optionally, based on the switching demand of source Home eNodeB received, when sending handover request message to target household base station, the first communication unit 60 specifically for:
After the handoff requirement message receiving source Home eNodeB transmission, based on the switching demand of the source Home eNodeB received, search the resource information of the subscriber equipment of initiating switching demand and send handover request message to target household base station.
Optionally, this path handover request message that second communication unit 61 sends at least comprises the S1 application identities of MME side and base station user equipment, allow to set up carrying list information, the security capabilities of E-UTRAN Cell Global Identity, tracing area mark and subscriber equipment, this path switching request acknowledgement message that third communication unit 62 receives at least comprises the S1 application identities of MME side and base station user equipment, refusal sets up carrying list information, safe context.
Optionally, send switching command message to source Home eNodeB, indicate this source Home eNodeB to complete follow-up switching when confirming, third communication unit 62 specifically for:
Switching command message is sent to source Home eNodeB, after equipment for indicating user is switched to target household base station from source Home eNodeB, receive the base station state message transfer that this source Home eNodeB returns, this base station state message transfer at least comprises the S1 application identities of MME side and base station user equipment, base station state transferring content.
Optionally, after receiving the base station state message transfer that this source Home eNodeB returns, third communication unit 62 is further used for:
Send MME state transfer message to this target household base station, the switching indicating this target household base station to carry out subscriber equipment confirms, and accepts the switch acknowledgment message that target household base station returns, and confirms to switch complete.
In sum, in the embodiment of the present invention, femto gateway is based on the switching demand of the source Home eNodeB received, and sends handover request message, indicate this target household base station to carry out the Resourse Distribute of being correlated with for this handover request to target household base station; After receiving the switching request acknowledgement message that target BS returns, confirm that target household base station completes the Resourse Distribute for this handover request, and to Mobility Management Entity MME transmit path handover request message, ask this MME to exchange the GTP tunnel end points of descending GTP tunnel to target household base station of source Home eNodeB; After the path switching request acknowledgement message that reception MME returns, send switching command message to source Home eNodeB, instruction source Home eNodeB completes follow-up switching and confirms.By femto gateway, s1 hand off signaling is converged like this, decrease the time that s1 switches, Femto gateway the is shared handoff procedure of core net, decrease the s1 hand off signaling flow process of core net in femto network, alleviate the burden of core net; Optimization for switching flow realizes simple, and does not need to carry out transformation and upgrade to existing LTE core network, and feasibility is strong.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt the form of complete hardware embodiment, completely software implementation or the embodiment in conjunction with software and hardware aspect.And the present invention can adopt in one or more form wherein including the upper computer program implemented of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) of computer usable program code.
The present invention describes with reference to according to the flow chart of the method for the embodiment of the present invention, equipment (system) and computer program and/or block diagram.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or square frame.These computer program instructions can being provided to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, making the instruction performed by the processor of computer or other programmable data processing device produce device for realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing device, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make on computer or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computer or other programmable devices is provided for the step realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
Although describe the preferred embodiments of the present invention, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various change and modification to the embodiment of the present invention and not depart from the spirit and scope of the embodiment of the present invention.Like this, if these amendments of the embodiment of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (10)
1. for an optimization method for cell merge flow process, it is characterized in that, comprising:
Femto gateway, based on the switching demand of the source Home eNodeB received, sends handover request message to target household base station, indicates described target household base station to carry out the Resourse Distribute of being correlated with for described handover request;
Described femto gateway is after receiving the switching request acknowledgement message that described target BS returns, confirm that described target household base station completes the Resourse Distribute for described handover request, and to Mobility Management Entity MME transmit path handover request message, ask described MME to exchange the GTP tunnel end points of descending GTP tunnel to target household base station of source Home eNodeB;
After described femto gateway receives the path switching request acknowledgement message that described MME returns, send switching command message to source Home eNodeB, indicate described source Home eNodeB to complete follow-up switching and confirm.
2. the method for claim 1, is characterized in that, femto gateway, based on the switching demand of the source Home eNodeB received, sends handover request message to target household base station, specifically comprises:
Described femto gateway, after the handoff requirement message receiving source Home eNodeB transmission, based on the switching demand of the source Home eNodeB received, is searched the resource information of the subscriber equipment of initiating switching demand and sends handover request message to target household base station.
3. the method for claim 1, it is characterized in that, described path handover request message at least comprises the S1 application identities of MME side and base station user equipment, allow to set up carrying list information, the security capabilities of E-UTRAN Cell Global Identity, tracing area mark and subscriber equipment, described path switching request acknowledgement message at least comprises the S1 application identities of MME side and base station user equipment, and refusal sets up carrying list information, safe context.
4. the method as described in claim 1,2 or 3, is characterized in that, described femto gateway sends switching command message to source Home eNodeB, indicates described source Home eNodeB to complete follow-up switching and confirms, specifically comprise:
Described femto gateway sends switching command message to source Home eNodeB, after equipment for indicating user is switched to target household base station from source Home eNodeB, receive the base station state message transfer that described source Home eNodeB returns, described base station state message transfer at least comprises the S1 application identities of MME side and base station user equipment, base station state transferring content.
5. method as claimed in claim 4, is characterized in that, described femto gateway comprises after receiving the base station state message transfer that described source Home eNodeB returns further:
Described femto gateway sends MME state transfer message to described target household base station, the switching indicating described target household base station to carry out subscriber equipment confirms, and accepts the switch acknowledgment message that target household base station returns, and confirms to switch complete.
6. a femto gateway, is characterized in that, comprising:
First communication unit, for the switching demand based on the source Home eNodeB received, sends handover request message to target household base station, indicates described target household base station to carry out the Resourse Distribute of being correlated with for described handover request;
Second communication unit, for after receiving the switching request acknowledgement message that described target BS returns, confirm that described target household base station completes the Resourse Distribute for described handover request, and to Mobility Management Entity MME transmit path handover request message, ask described MME to exchange the GTP tunnel end points of descending GTP tunnel to target household base station of source Home eNodeB;
Third communication unit, for after receiving the path switching request acknowledgement message that returns of described MME, sends switching command message to source Home eNodeB, indicates described source Home eNodeB to complete follow-up switching and confirms.
7. device as claimed in claim 6, is characterized in that, based on the switching demand of the source Home eNodeB received, when sending handover request message to target household base station, described first communication unit specifically for:
After the handoff requirement message receiving source Home eNodeB transmission, based on the switching demand of the source Home eNodeB received, search the resource information of the subscriber equipment of initiating switching demand and send handover request message to target household base station.
8. device as claimed in claim 6, it is characterized in that, the described path handover request message that described second communication unit sends at least comprises the S1 application identities of MME side and base station user equipment, allow to set up carrying list information, the security capabilities of E-UTRAN Cell Global Identity, tracing area mark and subscriber equipment, the described path switching request acknowledgement message that described third communication unit receives at least comprises the S1 application identities of MME side and base station user equipment, refusal sets up carrying list information, safe context.
9. the device as described in claim 6,7 or 8, is characterized in that, sends switching command message to source Home eNodeB, indicates described source Home eNodeB to complete follow-up switching when confirming, described third communication unit specifically for:
Switching command message is sent to source Home eNodeB, after equipment for indicating user is switched to target household base station from source Home eNodeB, receive the base station state message transfer that described source Home eNodeB returns, described base station state message transfer at least comprises the S1 application identities of MME side and base station user equipment, base station state transferring content.
10. device as claimed in claim 9, is characterized in that, after receiving the base station state message transfer that described source Home eNodeB returns, described third communication unit is further used for:
Send MME state transfer message to described target household base station, the switching indicating described target household base station to carry out subscriber equipment confirms, and accepts the switch acknowledgment message that target household base station returns, and confirms to switch complete.
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| CN110769472A (en) * | 2018-07-26 | 2020-02-07 | 华为技术有限公司 | Switching method, device and communication system |
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