CN100502588C - Cell switching method of cross-evolving node B in the long-evolving mobile communication network - Google Patents
Cell switching method of cross-evolving node B in the long-evolving mobile communication network Download PDFInfo
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Abstract
This invention discloses one long progress LTE mobile communication network over point B area switch method, witch comprises the following steps: network point gets the wireless materials control message before area switching; in interacting progress between GW and source encode and aim one executing the following steps: a, GW sending the message of UE to aim encode; b, aim encode aligns wireless materials according to UE RRC; c, GW sends business data to UE through source and aim encode till the switch order is fulfilled to send aim encode to business data.
Description
Technical field
The present invention relates to the cell switching method of striding enode b in a kind of Long Term Evolution (LTE) mobile communications network.
Background technology
At present, Long Term Evolution (LTE) mobile communications network is by the network configuration of three node layers of traditional base station (NodeB), radio network controller (RNC) and core net (CN), simplification is for the NodeB (eNodeB) and this simple two-layer node structure of the above node of eNodeB of evolution, this network configuration is referring to Fig. 1, and Fig. 1 is the LTE mobile radio communication structural representation of simplification.
Wherein, the above node 100 of eNodeB also can be called as gateway node (GW) or central node.No direct physical connects so that reduce internodal interconnection cost between each eNodeB node 110.Subscriber equipment (UE) is set up Radio Resource control (Radio ResourceControl, RRC) administrative relationships with the eNodeB node 110 of network.ENodeB node 110 comprises the RRC management entity, and the RRC management function is safeguarded in responsible processing, and safeguards UE RRC context.The above node 100 of eNodeB is safeguarded the UE management under the no RRC connection, safeguards UE context (UE Context).
UE connects by eNodeB node 110 and the above node 100 of eNodeB, realizes mobile communication businesses such as voice call or transfer of data.
With the same at traditional mobile communications network, UE can carry out and stride the eNodeB cell switch process in striding eNodeB sub-district moving process.In the LTE net, adopt at present data forwarding to stride the method for switching the eNodeB sub-district defective that real-time can not fine assurance is arranged.Referring to Fig. 2, Fig. 2 strides the sub-district switching processing flow chart of enode b for prior art.This flow process may further comprise the steps:
Step 201～202, before switched the sub-district, GW sent to UE with business datum by source eNodeB.
Step 203, UE is to the measurement report of eNodeB transmission in source at cell-of-origin and purpose sub-district.
Step 204, source eNodeB carries out cell switch determining according to the measurement report of UE, when cell-of-origin and the purpose sub-district of determining this UE are in different e NodeB, need stride the eNodeB sub-district when switching, execution in step 205, beginning sub-district hand off signaling is mutual.
Step 205～206, source eNodeB switches the preparation signaling by GW to RRC context and sub-district that target eNode B sends the UE that need carry out the sub-district switching.
Step 207, target eNode B are carried out interface-free resources and are prepared according to the RRC context of this UE, are this UE distributing radio resource.
Step 208～209, target eNode B send to switch to source eNodeB by GW and are ready to complete signaling.
Step 210, source eNodeB sends sub-district hand off signaling (HO command) to UE.If source eNodeB this moment receives GW and sends to the business datum that this will carry out the UE that switches the sub-district, then when sending the sub-district hand off signaling or after sending the sub-district hand off signaling, execution in step 211.
Step 211, source eNodeB will send to this business datum that will carry out the UE of sub-district switching with GW and be transmitted to GW, and GW stores this business datum.
In this step, GW also can be transmitted to target eNode B with this business datum, stores this business datum by target eNode B.
Step 212, UE receives the sub-district hand off signaling, is synchronized to this purpose eNodeB by Target cell, sends the sub-district switching to target eNode B and finishes signaling.
Step 213～216, target eNode B sends the sub-district switching by GW to source eNodeB and finishes signaling, and source eNodeB is released to this UE assigned radio resource.
Wherein, step 214 and 215 is to carry out under GW has stored the situation of business datum of this UE that receives from source eNodeB.If target eNode B is stored this business datum, then only need execution in step 215.If do not store these data, then need not execution in step 214 and 215.
Step 217～218, the sub-district hand off signaling is finished alternately, and GW sends business datum by target eNode B to UE.
By above-mentioned process as seen, in the LTE net, stride the method that switch the eNodeB sub-district at present, switch to by the sub-district of source eNodeB in the process of sub-district of target eNode B at UE, in order to reduce data degradation, source eNodeB is transmitted to GW with partial data in the handoff procedure, after GW receives that signaling is finished in switching, this part data is issued UE by target eNode B.Though this process can guarantee lower packet loss, caused that processing delay is long, the problem of real-time difference, cause real time business to put to good use.
Summary of the invention
In view of this, main purpose of the present invention is to provide the cell switching method of striding enode b in two kinds of Long Term Evolution mobile communications networks, improves the real-time of the sub-district switching of striding enode b.
For achieving the above object, technical scheme of the present invention specifically is achieved in that
The cell switching method of striding enode b in a kind of Long Term Evolution LTE mobile communications network, gateway node GW obtain the radio resource control RRC context of this UE before user equipment (UE) is striden the sub-district switching of enode b eNodeB; Carry out in the hand off signaling reciprocal process of sub-district at GW and source eNodeB and target eNode B, carry out following steps:
A, GW send to target eNode B with the RRC context of this UE earlier;
B, target eNode B are this UE distributing radio resource according to the RRC context of this UE, and transmit the sub-district by GW to source eNodeB and switch and be ready to complete signaling; Source eNodeB receive this sub-district switch be ready to complete signaling after, send two startup signalings of broadcasting to GW;
C, GW receive two broadcast start signaling after, send business datum to UE simultaneously by source eNodeB and target eNode B, hand off signaling is finished alternately up to the sub-district, GW sends business datum by target eNode B to UE again.
Wherein, described steps A can for: after GW receives the RRC context copy of UE,, the RRC context copy of this UE is sent to all possible target eNode B according to network topology structure;
Or GW prepares signaling with the RRC context of this UE with the sub-district switching and sends to target eNode B after the preparation signaling is switched in the sub-district that receives source eNodeB transmission.
Source eNodeB is the measurement report at cell-of-origin and purpose sub-district that sends according to UE, the cell-of-origin and the purpose sub-district that rule out this UE are in different e NodeB, in the time of need striding the switching of eNodeB sub-district, transmit the sub-district by GW to target eNode B and switch the preparation signaling.
The switching of described sub-district is ready to complete can comprise in the signaling prepares successfully or prepares the failure indication;
Described step B further comprises: source eNodeB receive this sub-district switch be ready to complete signaling after, judge that wherein comprising preparation successfully indicates and still prepare the failure indication, if prepares successfully indication, then send and pair broadcast the startup signalings to GW; If prepare the failure indication, then finish switching flow.
Among the described step B, source eNodeB receive this sub-district switch be ready to complete signaling after, send the sub-district hand off signaling to UE;
The process that the described sub-district of step C hand off signaling is finished alternately is:
After UE receives the sub-district hand off signaling, be synchronized to purpose eNodeB, and finish signaling to this purpose eNodeB transmission sub-district switching by Target cell;
Purpose eNodeB finishes signaling with this sub-district switching and sends to source eNodeB by GW, and the sub-district hand off signaling is finished alternately.
This method may further include: the GW record sends the time started of business datum simultaneously to UE by source eNodeB and target eNode B, if GW at the fixed time then, do not receive purpose eNodeB and finish signaling, then stop to send business datum to UE simultaneously by source eNodeB and target eNode B to the sub-district switching that source eNodeB transmits.
GW carries out before the sub-district switches at UE, obtain this UE the contextual method of RRC can for:
When source eNodeB detects UE and moves to the edge cell of this eNodeB, send the RRC context copy of this UE to GW;
This method further comprises: when source eNodeB or target eNode B detect UE when edge cell moves to the non-edge cell of this eNodeB, notice GW deletes the RRC context copy of this UE.
The cell switching method of striding enode b in a kind of Long Term Evolution LTE mobile communications network, gateway node GW obtain the radio resource control RRC context of this UE before user equipment (UE) is striden the sub-district switching of enode b eNodeB; Carry out in the hand off signaling reciprocal process of sub-district at GW and source eNodeB and target eNode B, carry out following steps:
A, GW send to target eNode B with the RRC context of this UE earlier;
B, target eNode B are this UE distributing radio resource according to the RRC context of this UE, and transmit the sub-district by GW to source eNodeB and switch and be ready to complete signaling; After prolonging the scheduled time, send two startup signalings of broadcasting simultaneously to GW;
C, GW receive two broadcast start signaling after, send business datum to UE simultaneously by source eNodeB and target eNode B, hand off signaling is finished alternately up to the sub-district, GW sends business datum by target eNode B to UE again.
Described steps A is: after GW receives the RRC context copy of UE, according to network topology structure, the RRC context copy of this UE is sent to all possible target eNode B;
Or GW prepares signaling with the RRC context of this UE with the sub-district switching and sends to target eNode B after the preparation signaling is switched in the sub-district that receives source eNodeB transmission.
Source eNodeB is the measurement report at cell-of-origin and purpose sub-district that sends according to UE, the cell-of-origin and the purpose sub-district that rule out this UE are in different e NodeB, in the time of need striding the switching of eNodeB sub-district, transmit the sub-district by GW to target eNode B and switch the preparation signaling.
Among the described step B, source eNodeB receive this sub-district switch be ready to complete signaling after, send the sub-district hand off signaling to UE;
The process that the described sub-district of step C hand off signaling is finished alternately is:
After UE receives the sub-district hand off signaling, be synchronized to purpose eNodeB, and finish signaling to this purpose eNodeB transmission sub-district switching by Target cell;
Purpose eNodeB finishes signaling with this sub-district switching and sends to source eNodeB by GW, and the sub-district hand off signaling is finished alternately.
This method further comprises:
The GW record sends the time started of business datum simultaneously to UE by source eNodeB and target eNode B, if GW at the fixed time then, do not receive purpose eNodeB and finish signaling, then stop to send business datum to UE simultaneously by source eNodeB and target eNode B to the sub-district switching that source eNodeB transmits.
GW is before UE carries out the sub-district switching, and the contextual method of RRC that obtains this UE is:
When source eNodeB detects UE and moves to the edge cell of this eNodeB, send the RRC context copy of this UE to GW;
This method further comprises: when source eNodeB or target eNode B detect UE when edge cell moves to the non-edge cell of this eNodeB, notice GW deletes the RRC context copy of this UE.
As seen from the above technical solutions, the cell switching method of striding enode b in this Long Term Evolution mobile communications network of the present invention, GW obtains the RRC context of UE before switching, and GW and source eNodeB and target eNode B are carried out in the hand off signaling reciprocal process of sub-district, RRC context with this UE sends to target eNode B earlier, target eNode B is this UE distributing radio resource according to this RRC context, GW sends business datum by source eNodeB and target eNode B to UE then, hand off signaling is finished alternately up to the sub-district, and GW sends business datum by target eNode B to UE again.
Like this, the business datum of transmitting in cell switch process can send to UE by source eNodeB and target eNode B, do not need GW to transmit source eNodeB sends to UE in handoff procedure business datum, therefore, can not occur transmitting the time delay of bringing because of business datum.As seen, the cell switching method of striding enode b in this Long Term Evolution mobile communications network of the present invention has very strong sequential, can improve the real-time of the sub-district switching of striding enode b, satisfies the requirement of real time business to real-time.
Description of drawings
The LTE mobile radio communication structural representation of Fig. 1 for simplifying;
Fig. 2 strides the sub-district switching processing flow chart of enode b for prior art;
Fig. 3 is the sub-district switching processing flow chart of striding enode b of the present invention's first preferred embodiment;
Fig. 4 is the sub-district switching processing flow chart of striding enode b of the present invention's second preferred embodiment;
Fig. 5 is the sub-district switching processing flow chart of striding enode b of the present invention's the 3rd preferred embodiment.
Embodiment
For making purpose of the present invention, technical scheme and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is described in more detail.
The cell switching method of striding enode b in this Long Term Evolution LTE mobile communications network of the present invention, GW obtains the RRC context of UE before switching, and GW and source eNodeB and target eNode B are carried out in the hand off signaling reciprocal process of sub-district, RRC context with this UE sends to target eNode B earlier, target eNode B is this UE distributing radio resource according to this RRC context, GW sends business datum by source eNodeB and target eNode B to UE then, hand off signaling is finished alternately up to the sub-district, and GW sends business datum by target eNode B to UE again.
The present invention is described in detail below to lift three preferred embodiments.
First preferred embodiment:
GW need to have obtained the RRC context of the UE of switching in the present embodiment before switching, and the special-purpose two startup signalings of broadcasting of use, carrying out in the hand off signaling reciprocal process of sub-district with source eNodeB and target eNode B, GW sends business datum to UE simultaneously by source eNodeB and target eNode B, and hand off signaling is finished alternately up to the sub-district.Referring to Fig. 3, Fig. 3 is the sub-district switching processing flow chart that enode b is striden in the base station of striding of the present invention's first preferred embodiment.This flow process may further comprise the steps:
Step 301～302, before switched the sub-district, GW sent to UE with business datum by source eNodeB.
Step 303, UE is to the measurement report of eNodeB transmission in source at cell-of-origin and purpose sub-district.
Step 304, source eNodeB carries out cell switch determining according to the measurement report of UE, when cell-of-origin and the purpose sub-district of determining this UE are in different e NodeB, need stride the eNodeB sub-district when switching, execution in step 305, beginning sub-district hand off signaling is mutual.
Step 305, source eNodeB sends the sub-district that comprises UE information to GW and switches the preparation signaling.
Step 306 the RRC context of the UE that GW switches from acquired needs according to this UE information, is found out the RRC context of this UE, the RRC context of this UE and sub-district is switched prepare signaling and send to target eNode B.
In fact, because GW knows topology of networks, receive the RRC context copy of a UE as GW after, can be according to network topology structure, know and the residing eNodeB of the current place of this UE sub-district neighbor cell that these eNodeB (it also may be a plurality of may being) are exactly the possible target eNode B of this UE.Therefore, GW can send to all possible target eNode B in advance with the RRC context copy of this UE before switching.In this case, this step only needs the sub-district of this UE switched and prepares signaling and send to target eNode B and get final product.
Step 307, target eNode B are carried out interface-free resources and are prepared according to the RRC context of this UE, are this UE distributing radio resource.
Step 308～309, target eNode B send to switch to source eNodeB by GW and are ready to complete signaling.Switching in the present embodiment is ready to complete and can also comprises preparation in the signaling and successfully indicate and still prepare the failure indication.
Step 310, source eNodeB sends two startup signalings of broadcasting to GW, simultaneously or send two broadcast start signaling after, execution in step 311.
In this step, be ready to complete signaling and also comprised and prepares successfully indication and still prepare failure and indicate if switch, then source eNodeB receive this sub-district switch be ready to complete signaling after, judge that earlier wherein comprising preparation successfully indicates still preparation failure indication, if prepare successfully indication, then send two upward broadcasting and start signaling to GW; If prepare the failure indication, then finish switching flow.
Step 311, source eNodeB sends the sub-district hand off signaling to UE.
Step 312～313, GW receive two broadcast start signaling after, start two processes of broadcasting, send data to source eNodeB and two eNodeB of target eNode B simultaneously, the data flow of this two-way transmission can be called the Bi-Casting data flow, and above-mentioned two startup signalings of broadcasting can be called Bi-Casting startup signaling.
Owing to the transmission/processing of eating dishes without rice or wine is slower than network interface transmission/processing, so UE at the acceptance area hand off signaling, initiates to switch when being synchronized to target eNode B, target eNode B has obtained the Bi-Casting data flow of GW.
After source eNodeB and target eNode B receive data, send business datum to UE respectively, in this case, if UE self does not also finish switching, still be under the eNodeB of source, then receive only the business datum that source eNodeB sends, if UE self has finished switching, be under the purpose eNodeB, then received only the business datum that purpose eNodeB sends.
In addition.In this step, can also write down the time started that sends simultaneously.
Step 314, UE is synchronized to this purpose eNodeB by Target cell after receiving the sub-district hand off signaling of source eNodeB transmission, sends the sub-district switching to target eNode B and finishes signaling.
Step 315～318, target eNode B sends the sub-district switching to GW and finishes signaling, GW receives that this sub-district is switched and finishes signaling, just begin to send business datum to UE by target eNode B, transmit the sub-district switching to source eNodeB and finish signaling, the sub-district hand off signaling is finished alternately, and source eNodeB is released to this UE assigned radio resource.
In the present embodiment, GW can adopt following method to obtain the RRC context of the UE that need to switch before switching: when source eNodeB detects UE and moves to the edge cell of this eNodeB, send the RRC context copy of this UE to GW; When source eNodeB or target eNode B detect UE when edge cell moves to the non-edge cell of this eNodeB, notice GW deletes the RRC context copy of this UE.
In addition, in the present embodiment, GW can also write down the time started of while to source eNodeB and purpose eNodeB transmission data, if GW at the fixed time then, also do not receive purpose eNodeB and finish signaling, then stop by sending business datum to UE simultaneously to the sub-district switching that source eNodeB transmits.
Present embodiment is owing to start and twoly to broadcast that to carry out the actual of transfer of data be not a lot of in advance, so it is very not many to take the network transmission resource amount, and handle owing to there is fault tolerant mechanism GW can when flow process is unusual, finish two unicast data transmission, therefore can not cause very big system resource waste.
Second preferred embodiment:
Present embodiment is identical with first preferred embodiment, and GW need to have obtained the RRC context of the UE that switches before switching, and uses and special-purpose twoly broadcast the startup signaling, just can't help source eNodeB to send two broadcasting and start signaling but sent by target eNode B.Detailed process is referring to Fig. 4, and Fig. 4 is the sub-district switching processing flow chart that enode b is striden in the base station of striding of the present invention's second preferred embodiment.This flow process may further comprise the steps:
Step 401～step 408, identical with step 301 shown in Figure 3～step 308, no longer repeat specification here.
Step 409, target eNode B start a timer, when predetermined time expand then, execution in step 410.
Step 410, target eNode B sends two startup signalings of broadcasting to GW.
Step 411, GW receive the sub-district switch be ready to complete signaling after, it is transmitted to source eNodeB.
Step 412, source eNodeB receive the sub-district switch be ready to complete signaling after, send the sub-district hand off signaling to UE.
Step 413～step 414, GW receive two broadcast start signaling after, start two processes of broadcasting, send business datums to two eNodeB simultaneously.
Step 415, UE is synchronized to this purpose eNodeB by Target cell after receiving the sub-district hand off signaling of source eNodeB transmission, sends the sub-district switching to target eNode B and finishes signaling.
Step 416～419, target eNode B sends the sub-district switching to GW and finishes signaling, GW receives that this sub-district is switched and finishes signaling, just begin to send business datum to UE by target eNode B, and transmit the sub-district switching to source eNodeB and finish signaling, the sub-district hand off signaling is finished alternately, and source eNodeB is released to this UE assigned radio resource.
In addition, in the present embodiment, GW can also write down the time started of while to source eNodeB and purpose eNodeB transmission data, if GW at the fixed time then, also do not receive purpose eNodeB and finish signaling, then stop two processes of broadcasting source eNodeB and target eNode B to the sub-district switching that source eNodeB transmits.
Present embodiment is restarted through time-delay and two broadcast process and carry out transfer of data after preparing successfully, and the time of time-delay must be pre-set, and Fig. 4 is a kind of perfect condition, and GW starts and twoly broadcasts process and carry out transfer of data after UE receives the sub-district hand off signaling.But owing to reasons such as networks, it is very not definite that UE receives time of sub-district hand off signaling, and in this case, the timing of the timer that is used to delay time is difficult to guarantee that very exactly UE receives the sub-district hand off signaling.
If present embodiment after preparing successfully, begins to start without time-delay immediately twoly broadcast process and carry out transfer of data, then relatively UE begin to switch to the target eNode B beginning opportunity early, waste network transmission resource and air resource are more.Therefore, the effect of present embodiment is not as first preferred embodiment.
The 3rd preferred embodiment:
GW need to have obtained the RRC context of the UE of switching in the present embodiment before switching, do not use special-purpose two startup signalings of broadcasting, GW parse sub-district that target eNode B sends switch be ready to complete signaling after, this sub-district is switched when being ready to complete signaling and being transmitted to source eNodeB, start and twoly broadcast process and carry out transfer of data.Detailed process is referring to Fig. 5, and Fig. 5 is the sub-district switching processing flow chart of striding enode b of the present invention's the 3rd preferred embodiment.This flow process may further comprise the steps:
Step 501～step 507, identical with step 301 shown in Figure 3～step 307, no longer repeat specification here.
Step 508, GW receives from target eNode B all, and the signaling that be transmitted to source eNodeB is resolved.
Step 509, GW parse the sub-district switch be ready to complete signaling after, it is transmitted to source eNodeB, simultaneously execution in step 510.
Step 510～511, GW receive two broadcast start signaling after, start two processes of broadcasting, send business datums to two eNodeB simultaneously.
Step 512, source eNodeB receive the sub-district switch be ready to complete signaling after, send the sub-district hand off signaling to UE.
Step 513, UE is synchronized to this purpose eNodeB by Target cell after receiving the sub-district hand off signaling of source eNodeB transmission, sends the sub-district switching to target eNode B and finishes signaling.
Step 514～517, target eNode B sends the sub-district switching to GW and finishes signaling.GW receives that this sub-district is switched and finishes signaling, just begins to send business datum by target eNode B to UE, and transmits the sub-district to source eNodeB and switch and finish signaling, and the sub-district hand off signaling is finished alternately, and source eNodeB is released to this UE assigned radio resource.
In the present embodiment, relatively UE begins to switch to target eNode B, start two broadcast carry out transfer of data opportunity early, cause waste network transmission resource and air resource more.In addition,, make processing expenditure increase, caused unnecessary system resource waste owing to need to resolve different signalings.Therefore, the effect of present embodiment is not as first preferred embodiment.
Among above-mentioned three embodiment, GW can also write down the time started that sends data by source eNodeB and purpose eNodeB simultaneously to UE, and the startup timer begins regularly, if GW at the fixed time then, also do not receive purpose eNodeB and finish signaling, then stop to send business datum to UE simultaneously by source eNodeB and target eNode B to the sub-district switching that source eNodeB transmits.
By the flow process of Fig. 3, Fig. 4, Fig. 5 as seen, in above-mentioned three preferred embodiments, first preferred embodiment shown in Figure 3 is an illustrated embodiments, in the practical application, recommends to use this method.
By the above embodiments as seen, the cell switching method of striding enode b in this Long Term Evolution mobile communications network of the present invention, have very strong sequential, can improve the real-time of the sub-district switching of striding enode b, satisfy the requirement of real time business real-time.
Claims (13)
1, the cell switching method of striding enode b in a kind of Long Term Evolution LTE mobile communications network, it is characterized in that: gateway node GW obtains the radio resource control RRC context of this UE before user equipment (UE) is striden the sub-district switching of enode b eNodeB; Carry out in the hand off signaling reciprocal process of sub-district at GW and source eNodeB and target eNode B, carry out following steps:
A, GW send to target eNode B with the RRC context of this UE earlier;
B, target eNode B are this UE distributing radio resource according to the RRC context of this UE, and transmit the sub-district by GW to source eNodeB and switch and be ready to complete signaling; Source eNodeB receive this sub-district switch be ready to complete signaling after, send two startup signalings of broadcasting to GW;
C, GW receive two broadcast start signaling after, send business datum to UE simultaneously by source eNodeB and target eNode B, hand off signaling is finished alternately up to the sub-district, GW sends business datum by target eNode B to UE again.
2, cell switching method of striding enode b as claimed in claim 1, it is characterized in that, described steps A is: after GW receives the RRC context copy of UE, according to network topology structure, the RRC context copy of this UE is sent to all possible target eNode B;
Or GW prepares signaling with the RRC context of this UE with the sub-district switching and sends to target eNode B after the preparation signaling is switched in the sub-district that receives source eNodeB transmission.
3, cell switching method of striding enode b as claimed in claim 1, it is characterized in that: source eNodeB is the measurement report at cell-of-origin and purpose sub-district that sends according to UE, the cell-of-origin and the purpose sub-district that rule out this UE are in different e NodeB, in the time of need striding the switching of eNodeB sub-district, transmit the sub-district by GW to target eNode B and switch the preparation signaling.
4, cell switching method of striding enode b as claimed in claim 1 is characterized in that, the switching of described sub-district is ready to complete comprising in the signaling prepares successfully or prepare the failure indication;
Described step B further comprises: source eNodeB receive this sub-district switch be ready to complete signaling after, judge that wherein comprising preparation successfully indicates and still prepare the failure indication, if prepares successfully indication, then send and pair broadcast the startup signalings to GW; If prepare the failure indication, then finish switching flow.
5, cell switching method of striding enode b as claimed in claim 1 is characterized in that: among the described step B, source eNodeB receive this sub-district switch be ready to complete signaling after, send the sub-district hand off signaling to UE;
The process that the described sub-district of step C hand off signaling is finished alternately is:
After UE receives the sub-district hand off signaling, be synchronized to purpose eNodeB, and finish signaling to this purpose eNodeB transmission sub-district switching by Target cell;
Purpose eNodeB finishes signaling with this sub-district switching and sends to source eNodeB by GW, and the sub-district hand off signaling is finished alternately.
6, cell switching method of striding enode b as claimed in claim 1 is characterized in that, this method further comprises:
The GW record sends the time started of business datum simultaneously to UE by source eNodeB and target eNode B, if GW at the fixed time then, do not receive purpose eNodeB and finish signaling, then stop to send business datum to UE simultaneously by source eNodeB and target eNode B to the sub-district switching that source eNodeB transmits.
7, cell switching method of striding enode b as claimed in claim 1 is characterized in that, GW is before UE carries out the sub-district switching, and the contextual method of RRC that obtains this UE is:
When source eNodeB detects UE and moves to the edge cell of this eNodeB, send the RRC context copy of this UE to GW;
This method further comprises: when source eNodeB or target eNode B detect UE when edge cell moves to the non-edge cell of this eNodeB, notice GW deletes the RRC context copy of this UE.
8, the cell switching method of striding enode b in a kind of Long Term Evolution LTE mobile communications network, it is characterized in that: gateway node GW obtains the radio resource control RRC context of this UE before user equipment (UE) is striden the sub-district switching of enode b eNodeB; Carry out in the hand off signaling reciprocal process of sub-district at GW and source eNodeB and target eNode B, carry out following steps:
A, GW send to target eNode B with the RRC context of this UE earlier;
B, target eNode B are this UE distributing radio resource according to the RRC context of this UE, and transmit the sub-district by GW to source eNodeB and switch and be ready to complete signaling; After prolonging the scheduled time, send two startup signalings of broadcasting simultaneously to GW;
C, GW receive two broadcast start signaling after, send business datum to UE simultaneously by source eNodeB and target eNode B, hand off signaling is finished alternately up to the sub-district, GW sends business datum by target eNode B to UE again.
9, cell switching method of striding enode b as claimed in claim 8, it is characterized in that, described steps A is: after GW receives the RRC context copy of UE, according to network topology structure, the RRC context copy of this UE is sent to all possible target eNode B;
Or GW prepares signaling with the RRC context of this UE with the sub-district switching and sends to target eNode B after the preparation signaling is switched in the sub-district that receives source eNodeB transmission.
10, cell switching method of striding enode b as claimed in claim 8, it is characterized in that: source eNodeB is the measurement report at cell-of-origin and purpose sub-district that sends according to UE, the cell-of-origin and the purpose sub-district that rule out this UE are in different e NodeB, in the time of need striding the switching of eNodeB sub-district, transmit the sub-district by GW to target eNode B and switch the preparation signaling.
11, cell switching method of striding enode b as claimed in claim 8 is characterized in that: among the described step B, source eNodeB receive this sub-district switch be ready to complete signaling after, send the sub-district hand off signaling to UE;
The process that the described sub-district of step C hand off signaling is finished alternately is:
After UE receives the sub-district hand off signaling, be synchronized to purpose eNodeB, and finish signaling to this purpose eNodeB transmission sub-district switching by Target cell;
Purpose eNodeB finishes signaling with this sub-district switching and sends to source eNodeB by GW, and the sub-district hand off signaling is finished alternately.
12, cell switching method of striding enode b as claimed in claim 8 is characterized in that, this method further comprises:
The GW record sends the time started of business datum simultaneously to UE by source eNodeB and target eNode B, if GW at the fixed time then, do not receive purpose eNodeB and finish signaling, then stop to send business datum to UE simultaneously by source eNodeB and target eNode B to the sub-district switching that source eNodeB transmits.
13, cell switching method of striding enode b as claimed in claim 8 is characterized in that, GW is before UE carries out the sub-district switching, and the contextual method of RRC that obtains this UE is:
When source eNodeB detects UE and moves to the edge cell of this eNodeB, send the RRC context copy of this UE to GW;
This method further comprises: when source eNodeB or target eNode B detect UE when edge cell moves to the non-edge cell of this eNodeB, notice GW deletes the RRC context copy of this UE.
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| CN101848506A (en) * | 2010-03-25 | 2010-09-29 | 新邮通信设备有限公司 | Switching method in long-termed evolution enhancing system and system |
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| CN101998489B (en) * | 2009-08-21 | 2015-01-28 | 中兴通讯股份有限公司 | Method and device for testing EPS load bearing switching in network switching process |
| CN103037451B (en) * | 2011-10-03 | 2017-04-12 | 华为技术有限公司 | Radio resource control connection reconstruction method, user equipment and base station |
| CN104185234B (en) * | 2013-05-23 | 2018-05-11 | 中国移动通信集团公司 | A kind of data information transfer, the method, apparatus and system of adjacent cell switching |
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| CN101848506A (en) * | 2010-03-25 | 2010-09-29 | 新邮通信设备有限公司 | Switching method in long-termed evolution enhancing system and system |
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