CN104641685B - Method for switching network, access point, controller and base station - Google Patents
Method for switching network, access point, controller and base station Download PDFInfo
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- CN104641685B CN104641685B CN201380002030.XA CN201380002030A CN104641685B CN 104641685 B CN104641685 B CN 104641685B CN 201380002030 A CN201380002030 A CN 201380002030A CN 104641685 B CN104641685 B CN 104641685B
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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
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0072—Transmission or use of information for re-establishing the radio link of resource information of target access point
Abstract
The embodiment of the present invention provides a kind of method for switching network, access point, controller and base station.Inventive network switching method, it include: that first network access point obtains to be switched user equipment to the transmission delay reference information of the second network access point, the transmission delay reference information is for determining the transmission delay information between the to be switched UE and second network access point；The first network access point sends the switching request including the transmission delay reference information to the second network controller, the switching request is used to indicate second network controller and sends transmission delay information to second network access point, and it is synchronous with the to be switched UE progress network switching to control second network access point.The embodiment of the present invention improves the efficiency of network switching, solves the problems, such as that UE network interruption time delay in network switching is big.
Description
Technical field
The present embodiments relate to the communication technology more particularly to a kind of method for switching network, access point, controller and bases
It stands.
Background technique
With the fast development of long term evolution (Long Term Evolution, abbreviation LTE), third generation affiliate meter
It draws under (The3rd Generation Partnership Project, abbreviation 3GPP) specification, there are global system for mobile communications
(Global System for Mobile Communications, referred to as: GSM), Universal Mobile Communication System (Universal
Mobile Telecommunications System, abbreviation UMTS), the multiple types network such as LTE, how to realize between each network
Switching, the switching of especially LTE cell to UMTS cell just becomes particularly important.
In the handoff procedure of LTE cell to UMTS cell, existing switching flow are as follows: source evolved base station (Evolved
Node B, abbreviation source eNB) pass through LTE and UMTS core net node to target radio network controller (Radio Network
Controller, abbreviation RNC) send switching request；Target RNC is rung after receiving the switching request to source eNB transmission switching request
Answer message；Source eNB receives the handover request ack message rear line equipment (User Equipment, abbreviation UE) transmission and cuts
Order is changed, UE starts after receiving the switching command in downlink Dedicated Physical control channel (Dedicated Physical
Control Channel, referred to as: DPCCH) down-going synchronous is carried out, UE sends uplink letter in uplink DPCCH after the completion of down-going synchronous
Number, target NodeB searches for the uplink signal of UE transmission in certain search window, and carries out uplink synchronous, after synchronously completing, UE
Handoff completion message is sent to Target RNC, to realize UE from LTE cell to the switching of UMTS cell.
But it is above-mentioned in the prior art, in uplink synchronous, when there is a large amount of UE to need from LTE cell to UMTS cell
When switching, multiple to be switched UE will cause very big interruption time delay when carrying out uplink synchronous with target NodeB.
Summary of the invention
The embodiment of the present invention provides a kind of method for switching network, access point, controller and base station, to solve when there is a large amount of UE
Network switching time delay big problem when needing the switching from LTE cell to UMTS cell, to realize that UE is small from LTE cell to UMTS
The high efficiency of area's network switching.
The first aspect of the present invention provides a kind of method for switching network, comprising:
First network access point obtains to be switched user equipment (UE) to the transmission delay reference information of the second network access point,
The transmission delay reference information is used to determine the transmission delay letter between the to be switched UE and second network access point
Breath；
The first network access point sends the switching including the transmission delay reference information to the second network controller
Request, the switching request are used to indicate second network controller and send transmission delay letter to second network access point
It is synchronous with the to be switched UE progress network switching to control second network access point for breath.
In the first possible implementation of the first aspect, the first network access point is source evolved base station
ENB, second network access point are target BS NodeB, and second network controller is target radio network controller
RNC。
The possible implementation of with reference to first aspect the first, in second of possible implementation of first aspect
In, the transmission delay information is used to determine the search window size of uplink synchronous in network switching process for the target NodeB.
With reference to first aspect the first or second of possible implementation, in the third possible reality of first aspect
In existing mode, if the target NodeB and the source eNB co-sited, the first network access point obtain the biography of to be switched UE
Defeated delay reference information, comprising:
The source eNB obtains the time advance TA value between the to be switched UE and the source eNB, using the TA value as
The transmission delay reference information；Alternatively,
The source eNB obtains the TA value between the to be switched UE and the source eNB, and converting the TA value is general shifting
The transmission delay PD value of dynamic communication system UMTS, using the PD value as the transmission delay reference information.
With reference to first aspect the first or second of possible implementation, in the 4th kind of possible reality of first aspect
In existing mode, if the target NodeB and the source eNB are non-co-sited, the first network access point obtains to be switched UE's
Transmission delay reference information, comprising:
The source eNB obtains the location information of the to be switched UE, using the location information of the to be switched UE as described in
Transmission delay reference information.
With reference to first aspect the first or second of possible implementation, in the 5th kind of possible reality of first aspect
In existing mode, if the target NodeB and the source eNB are non-co-sited, the first network access point obtains to be switched UE's
Transmission delay reference information, comprising:
The source eNB obtains the location information of the to be switched UE and the location information of the target NodeB；
The source eNB is according to the positional information calculation of the location information of the to be switched UE and the target NodeB
PD value between to be switched UE and the target NodeB, using the PD value between the to be switched UE and the target NodeB as
The transmission delay reference information.
With reference to first aspect the first is to the 5th kind of any one possible implementation, at the 6th kind of first aspect
In possible implementation, it includes the transmission delay with reference to letter that the first network access point is sent to the second network controller
After the switching request of breath, further includes:
The switching request response that the source eNB is sent according to the Target RNC received is sent to the to be switched UE
Network switching indicates that information, the network switching instruction information are used to indicate the to be switched UE and carry out network switching.
The second aspect of the present invention provides a kind of method for switching network, comprising:
Second network controller receives the switching request including transmission delay reference information that first network access point is sent；
Second network controller determines to be switched user equipment (UE) and second according to the transmission delay reference information
Transmission delay information between network access point；
It includes the wireless of the transmission delay information that second network controller is sent to second network access point
Request for building link, the wireless link request is used to indicate second network access point and the to be switched UE is carried out
Network switching is synchronous.
In the first possible implementation of the second aspect, the first network access point is source evolved base station
ENB, second network access point are target BS NodeB, and second network controller is target radio network controller
RNC。
In conjunction with the first possible implementation of second aspect, in second of possible implementation of second aspect
In, the transmission delay information is used to determine the search window size of uplink signal in network switching process for the target NodeB.
In conjunction with the first or second of possible implementation of second aspect, in the third possible reality of second aspect
In existing mode, time advance TA value of the transmission delay reference information between the to be switched UE and the source eNB, then institute
It states the second network controller and determines biography between to be switched UE and the second network access point according to the transmission delay reference information
Defeated delay information, comprising:
The TA value is transformed to the transmission delay PD value of Universal Mobile Communication System UMTS by the Target RNC, will be described
PD value is as the transmission delay information.
In conjunction with the first or second of possible implementation of second aspect, in the 4th kind of possible reality of second aspect
In existing mode, the transmission delay reference information is the location information of the to be switched UE, then the second network controller root
The transmission delay information between to be switched UE and the second network access point is determined according to the transmission delay reference information, comprising:
The Target RNC obtains the location information of the target NodeB；
The Target RNC is according to the location information of the to be switched UE and the positional information calculation institute of the target NodeB
The PD value between to be switched UE and the target NodeB is stated, the PD value between the to be switched UE and the target NodeB is made
For the transmission delay information.
In conjunction with second aspect the first to the 4th kind of possible implementation, in the 5th kind of possible reality of second aspect
In existing mode, second network controller receives the switching including transmission delay reference information that first network access point is sent
After request, further includes:
The Target RNC sends switching request response to the source eNB.
The third aspect of the present invention provides a kind of first network access point, comprising:
Acquisition module, the transmission delay reference information for obtaining to be switched user equipment (UE) to the second network access point,
The transmission delay reference information is used to determine the transmission delay letter between the to be switched UE and second network access point
Breath；
First sending module is asked for sending the switching including the transmission delay reference information to the second network controller
It asks, the switching request is used to indicate second network controller and sends transmission delay letter to second network access point
It is synchronous with the to be switched UE progress network switching to control second network access point for breath.
In the first possible implementation of the third aspect, the first network access point is source evolved base station
ENB, second network access point are target BS NodeB, and second network controller is target radio network controller
RNC。
In conjunction with the first possible implementation of the third aspect, in the possible implementation of second of the third aspect,
The transmission delay information is used to determine the search window size of uplink synchronous in network switching process for the target NodeB.
In conjunction with the first or second of possible implementation of the third aspect, the third possible realization of the third aspect
In mode, the acquisition module is specifically used for: if the target NodeB and the source eNB co-sited, obtain the to be switched UE
Time advance TA value between the source eNB, using the TA value as the transmission delay reference information；Alternatively, obtaining institute
The TA value between to be switched UE and the source eNB is stated, and converts the transmission that the TA value is Universal Mobile Communication System UMTS and prolongs
Slow PD value, using the PD value as the transmission delay reference information.
In conjunction with the first or second of possible implementation of the third aspect, the 4th kind of possible realization of the third aspect
In mode, the acquisition module is specifically used for: if the target NodeB and the source eNB are non-co-sited, obtaining described to be switched
The location information of UE, using the location information of the to be switched UE as the transmission delay reference information.
In conjunction with the first or second of possible implementation of the third aspect, the 5th kind of possible realization of the third aspect
In mode, the acquisition module is specifically used for: if the target NodeB and the source eNB are non-co-sited, obtaining described to be switched
The location information of the location information of UE and the target NodeB；According to the location information of the to be switched UE and the target
PD value between to be switched UE described in the positional information calculation of NodeB and the target NodeB, by the to be switched UE and described
PD value between target NodeB is as the transmission delay reference information.
The fourth aspect of the present invention provides a kind of second network controller, comprising:
Receiving module, for receiving the switching request including transmission delay reference information of first network access point transmission；
Processing module, for determining that be switched user equipment (UE) connects with the second network according to the transmission delay reference information
Transmission delay information between access point；
Second sending module, for sending the radio chains including the transmission delay information to second network access point
Request is established on road, and the wireless link request is used to indicate second network access point and the to be switched UE carries out net
Network switching synchronizes.
In the first possible implementation of the fourth aspect, the first network access point is source evolved base station
ENB, second network access point are target BS NodeB, and second network controller is target radio network controller
RNC。
In conjunction with the first possible implementation of fourth aspect, in second of possible implementation of fourth aspect
In, uplink synchronous searches during the transmission delay information is used to that the target NodeB to be supplied to determine network switching uplink synchronous
Rope window size.
In conjunction with the first or second of possible implementation of fourth aspect, in the third possible reality of fourth aspect
In existing mode, the processing module is specifically used for: the transmission delay reference information be the to be switched UE and source eNB it
Between time advance TA value, then the TA value is transformed to the transmission delay PD value of Universal Mobile Communication System UMTS, will be described
PD value is as the transmission delay information.
In conjunction with the first or second of possible implementation of fourth aspect, in the 4th kind of possible reality of fourth aspect
In existing mode, the processing module is specifically used for: the transmission delay reference information is the location information of the to be switched UE, then
The location information for obtaining the target NodeB is believed according to the position of the location information of the to be switched UE and the target NodeB
Breath calculates the PD value between the to be switched UE and target NodeB, will be between the to be switched UE and the target NodeB
PD value as the transmission delay information.
The fifth aspect of the present invention provides a kind of base station, comprising: transmitter, receiver, memory and respectively with institute
State transmitter, the processor that the receiver is connected with the memory, wherein batch processing generation is stored in the memory
Code, and the processor executes such as first aspect present invention and first for calling the program code stored in the memory
The first any one method into the 6th kind of possible implementation of aspect.
The sixth aspect of the present invention provides a kind of network controller, comprising: transmitter, receiver, memory and point
The processor not connect with the transmitter, the receiver and the memory, wherein one group of journey is stored in the memory
Sequence code, and the processor is for calling the program code stored in the memory, execute such as second aspect of the present invention and
The first any one method into the 5th kind of possible implementation of second aspect.
The technical solution that various embodiments of the present invention provide is sent by first network access point to the second network controller
Transmission delay reference information is carried in switching request, is used to indicate the second network controller to the second network access point and is sent transmission
Postpone information, controls the second network access point according to the transmission delay information and determine search window size, to improve network
The efficiency of switching solves the problems, such as that UE network interruption time delay in network switching is big.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without any creative labor, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the flow chart of one embodiment of the invention method for switching network；
Fig. 2 is the flow chart of another embodiment of the present invention method for switching network；
Fig. 3 is the signaling process figure of yet another embodiment of the invention method for switching network；
Fig. 4 is the structural schematic diagram of one embodiment of the invention first network access point；
Fig. 5 is the structural schematic diagram of the second network controller of one embodiment of the invention；
Fig. 6 is the structural schematic diagram of one embodiment of the invention base station；
Fig. 7 is the structural schematic diagram of one embodiment of the invention network controller.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
Fig. 1 is the flow chart of one embodiment of the invention method for switching network, and this method can be applied under 3GPP specification
The internetwork network switching of standard especially switches to the network switching of UMTS cell from LTE cell, while this method can fit
The case where for Multi-Mode Base Station and non-Multi-Mode Base Station.This method can realize by the first network access point of network switching, first
Network access point can be the source base station switched in various standard networks under 3GPP specification.As shown in Figure 1, the present embodiment is with LTE
Source eNB in network is as first network access point, using the target NodeB based on UMTS as the second network access point, with mesh
RNC is marked as being illustrated for the second network controller, this method can be carried out according to following process:
S101, first network access point obtain to be switched UE to the transmission delay reference information of the second network access point, are somebody's turn to do
Transmission delay reference information is used to determine the transmission delay information between the to be switched UE and second network access point.
In the case where multiple types network cell coexists, the resident strategy of usual UE is preferential resident high standard, therefore
In the case where UMTS cell and LTE cell coexist, a large amount of UE, which are resident LTE cell, may cause LTE cell high load, inevitable
Network switching of a large amount of LTE cells to UMTS cell based on load, while circuit domain dropping (Circuit Switched can be caused
Fallback, abbreviation CSFB) it is also the factor that triggering LTE cell switches to UMTS subzone network.And in network switching in
Disconnected time delay is the principal element for influencing user's impression, therefore the case where switching there are a large amount of LTE cells to UMTS cell
Under, in order to not influence user impression, should shorten as far as possible LTE cell to UMTS cell handoff time delay.
UE can carry out relevant isosystem measurement according to measuring configuration, when the adjacent area different system UMTS after accessing LTE cell
It meets certain condition, UE can report the isosystem measurement comprising the adjacent area UMTS to report to the affiliated eNB of place cell, that is, source eNB, source
ENB can using the measurement report received as the transmission delay reference information of to be switched UE and target NodeB, alternatively,
The measurement report can be regard as the transmission delay reference information after centainly handling.
Wherein, the transmission which is determined between the to be switched UE and target NodeB is prolonged
Slow information.Further, which can be used for determining uplink synchronous in network switching process for target NodeB
Search window size.
Optionally, if target NodeB and source eNB co-sited, S101 may include: that obtain this to be switched by source eNB
Time advance (Timing Advance, abbreviation TA) value between UE and source eNB is referred to the TA value as the transmission delay
Information.Specifically, in LTE standard network, the uplink synchronizing signals of different UE want time unifying when reaching eNB, to guarantee UE
Between uplink signal orthogonality, thus facilitate eliminate cell in interference.Signal has delay in space propagation, if
UE is mobile to the direction far from eNB during the call, then the signal issued from eNB will " increasingly slowr " arrival UE, together with this
When, the signal of UE also can " increasingly later " arrival eNB, postpone the too long signal that will lead to UE that eNB is received on this time slot
The time slot for receiving next other UE signals with eNB is overlapped, causes intersymbol interference.The time unifying of uplink is to pass through
Realized in the sending side UE using TA value, i.e. the main purpose of TA value be exactly in order to eliminate propagation delay time different between UE,
UE adjusts sending time according to TA value when carrying out uplink transmission.TA value can pass through random access channel (Random
Access Channel, abbreviation RACH) it is obtained, it to access target NodeB is also to be obtained by RACH in handoff procedure
TA value and subsequent uplink is taken to send resource.
When UE is in UMTS cell, the propagation delay time of to be switched UE to target NodeB can be obtained by RACH process i.e.
Parameter PD value, according to its precision of protocol definition be 3chip, i.e. 0.78us, and in LTE cell RACH process obtain TA value,
Its precision is 0.52us, therefore the two parameters precisions are on the same order of magnitude, in eNB and NodeB co-sited or shared antenna
In the case of, the distance of UE to eNB and UE to NodeB is identical, i.e., signal propagation delay time having the same, therefore in this case,
The PD value that TA value in LTE cell can be used as UMTS cell uses.
Further, if target NodeB and source eNB co-sited, S101 can also include: that obtain this to be cut by source eNB
The TA value between UE and source eNB is changed, and converts the PD value that the TA value is UMTS, using the PD value as the transmission delay with reference to letter
Breath.Specifically, due to TA value and PD the standard network that belong to two different, measurement unit is different, for the ease of target
NodeB determines the search window size of uplink synchronous search using the parameter, can carry out measurement unit variation.
Optionally, if target NodeB and source eNB are non-co-sited, S101 may include: that obtain this to be cut by source eNB
The location information for changing UE, using the location information of the to be switched UE as the transmission delay reference information.Specifically, work as target
When NodeB and source eNB is non-co-sited situation, the propagation delay time of UE to eNB and the propagation delay time of UE to NodeB be not identical, no
TA information can be directly utilized, at this point it is possible to wait for this using the location information of the to be switched UE as the transmission delay reference information
The location information of switching UE is sent to Target RNC, and the transmission of the to be switched UE Yu target NodeB can be calculated by Target RNC
Delay.
Wherein, source eNB can pass through global positioning system (Global to the acquisition of to be switched UE location information
Position System, abbreviation GPS) method, reaching time-difference positioning (Observed Time Difference of
Arrival, abbreviation OTDOA) method and cell ID (Cell Identity, abbreviation CellID) method etc. be to be cut to obtain this
The coordinate information of UE is changed to realize, no limitations are hereby intended.
Further, if target NodeB and source eNB are non-co-sited, S101 can also include:
Source eNB obtains the location information of the to be switched UE and the location information of target NodeB；
Source eNB is according to the location information of the to be switched UE and the positional information calculation of the target NodeB to be switched UE
PD value between target NodeB is referred to the PD value between the to be switched UE and target NodeB as the transmission delay
Information.
Specifically, obtaining for the location information of target NodeB can be by adjacent area location information that source eNB is locally stored
In directly acquire, can also by queries configuration database obtain adjacent area location information, but not limited to this.Wherein, this is waited for
The calculating of PD value between switching UE and target NodeB for example may is that be believed according to the coordinate of to be switched UE and target NodeB
Breath extrapolate the distance between target NodeB and the to be switched UE, then by the distance value calculated divided by the light velocity this to
Switch the PD value of UE to target NodeB.
S102, the first network access point send the switching including the transmission delay reference information to the second network controller
Request, the switching request are used to indicate second network controller and send transmission delay information to second network access point,
It is synchronous with the to be switched UE progress network switching to control second network access point.
Specifically, when source eNB sends switching request to Target RNC, which is carried in the switching
Target RNC is sent in request together, for the Target RNC according to the switching request and the transmission delay reference information to target
NodeB sends wireless link request.Transmission delay information is carried in wireless link request, according to the transmission delay
Information, target NodeB can determine search window size, to improve network switching efficiency.
Optionally, after S102, the method for this implementation can also include: source eNB according to the Target RNC received
The switching request response of transmission sends network switching to the to be switched UE and indicates information, and the network switching instruction information is for referring to
Show that the to be switched UE carries out network switching.
The present embodiment, first network access point are sending carrying transmission delay ginseng in switching request to the second network controller
Information is examined, the second network controller is used to indicate to the second network access point and sends transmission delay information, for control the
Two network access points determine search window size according to the transmission delay information, to improve the efficiency of network switching, solve UE and exist
Network interruption time delay big problem when network switching.
Current UE can be switched from LTE cell to the network switching of UMTS cell using posteriority, i.e., UE receives switching command
Afterwards access target UMTS cell when think downlink be it is synchronous, uplink synchronous is directly carried out on uplink DPCCH, at this point, mainly
Time delay carries out the uplink signal search of uplink synchronous from the side target NodeB.Propagation delay time is not known in the side target NodeB
Search window is related to radius of society in the case where (Propagation Delay, abbreviation PD) value, for example, radius of society is 20km
When the uplink synchronous search window that uses using 512chips, search window generally uses 40- in the case where known PD value
50chips, i.e., if it is known that PD value, target NodeB can reduce search space, save NodeB process resource.But in reality
LTE cell then needs more searching resources into the network switching process of UMTS cell, due to that can not obtain PD value, while
In the case where resource-constrained, multiple switching UE need queuing to handle, and queue waiting time causes synchronization delayed time to increase, and especially exists
In the case where frequent LTE cell to UMTS subzone network switching, queuing time is long, and time delay influence is big, so as to cause entirely cutting
Change that interrupt time delay too long and seriously affect user experience.It in order to solve these problems, can be using provided by above-described embodiment
Method reduces network switching delay.
Fig. 2 is the flow chart of another embodiment of the present invention method for switching network, and this method can be by the second network controller
It realizes.The present embodiment is still using source eNB as first network access point, using target NodeB as the second network access point, with mesh
RNC is marked as being illustrated for the second network controller, as shown in Fig. 2, this method can be carried out according to following process:
S201, the second network controller receive the switching including transmission delay reference information that first network access point is sent
Request.
Optionally, can also include: the Target RNC after S201 sends switching request response to source eNB.Specifically
Ground, after the switching request for receiving source eNB, Target RNC carries out access and related resource prepares, and sends switching request and ring
Source eNB should be allow to assign indication message to UE to notify source eNB that can carry out network switching to source eNB.
S202, second network controller determine to be switched UE and the second network insertion according to the transmission delay reference information
Transmission delay information between point.
Optionally, which can be used for determining uplink signal in network switching process for target NodeB
Search window size.
Optionally, if TA value of the transmission delay reference information between the to be switched UE and source eNB, S202 can be with
It include: the PD value that the TA value is transformed to UMTS by the Target RNC, using the PD value as the transmission delay information.Specifically, source
When eNB determines itself and target NodeB co-sited, the transmission delay reference information sent to Target RNC is the to be switched UE and should
TA value between the eNB of source, then the TA value received is transformed to the PD value of UMTS network standard by Target RNC by measurement unit,
As the transmission delay information between to be switched UE and the second network access point.
Further, if the transmission delay reference information received is PD value, directly the transmission delay reference information is made
For transmission delay information.
Optionally, if the transmission delay reference information received is the location information of the to be switched UE, S202 be can wrap
It includes:
The Target RNC obtains the location information of target NodeB；
This is to be switched according to the positional information calculation of the location information of the to be switched UE and target NodeB for the Target RNC
PD value between UE and target NodeB is believed the PD value between the to be switched UE and target NodeB as the transmission delay
Breath.
Specifically, the location information of target NodeB can be by directly obtaining in configuration information that the RNC is locally stored
It takes, adjacent area location information can also be obtained by queries configuration database, but not limited to this.Wherein, for the to be switched UE
The acquisition of PD value between target NodeB can be obtained according to preceding method, and details are not described herein again.
S203, second network controller send the radio chains including the transmission delay information to second network access point
Request is established on road, and the wireless link request is used to indicate second network access point and cuts with to be switched UE progress network
Change synchronization.
Specifically, which sends wireless link request to target NodeB, indicate target NodeB with should be to
Switch the synchronization that UE carries out network insertion process, it is expressly noted that can also include that the transmission is prolonged in the Target indication information
Slow information, target NodeB can determine search window size according to the transmission delay information, to improve network switching efficiency.
The present embodiment, the second network controller determine transmission delay information according to the transmission delay reference information received,
And transmission delay information is carried and is sent to the second network access point in wireless link request, make the second network access point
Search window size is determined according to the transmission delay information, to improve the efficiency of network switching, solves UE net in network switching
Network interrupts the big problem of time delay.
Fig. 3 is the signaling process figure of yet another embodiment of the invention method for switching network, as shown in figure 4, this method can be by
It is carried out according to following process:
S301, to be switched UE send isosystem measurement report to source eNB.
It specifically, may include: the information such as the signal quality of source cell and target adjacent area in isosystem measurement report.
S302, source eNB obtain the transmission delay reference information of to be switched UE.
S303, source eNB send switching request to Target RNC.
Specifically, the transmission delay reference information is carried in switching request.
S304, Target RNC send switching request response to source eNB.
Specifically, in this step, which needs to carry out the preparation of related resource according to the switching request received.
S305, source eNB send indication message to be switched UE.
S306, Target RNC send wireless link request to target NodeB.
In this step, transmission delay information is carried in wireless link request, to instruct target NodeB to determine search
Window.
Optionally, S306 can be executed before S304, and no limitations are hereby intended.
S307, to be switched UE send uplink signal to target NodeB.
It can also include that be switched UE and target NodeB carries out down-going synchronous before this step.
S308, target NodeB according to wireless link request in transmission delay information determine search window size, and
It specifies search for searching for uplink signal within the scope of window, carries out uplink synchronous.
In this step, transmission delay information is carried in wireless link request, target NodeB is according to the transmission delay
Information can determine search window size, reduce search range, search for uplink signal in determining search range later, carry out
Row synchronizes.
It is emphasized that order relation in the absence of S307 and S308, i.e. S307 and S308 execution sequence are not fixed, this reality
Apply example by way of example only.
Fig. 4 is the structural schematic diagram of one embodiment of the invention first network access point, as shown in figure 4, the first network connects
Access point may include: to obtain module 41 and the first sending module 42.Wherein, which can be used for obtaining to be switched UE
To the transmission delay reference information of the second network access point, the transmission delay reference information for determine the to be switched UE and this
Transmission delay information between two network access points；First sending module 42, which can be used for sending to the second network controller, to be wrapped
The switching request of the transmission delay reference information is included, the switching request is used to indicate second network controller to second net
Network access point sends transmission delay information, and it is synchronous with to be switched UE progress network switching to control second network access point.
Optionally, which can be source eNB, which can be target NodeB, should
Second network controller can be Target RNC.
Optionally, which can be used for determining uplink synchronous in network switching process for target NodeB
Search window size.
Optionally, which specifically can be used for: if target NodeB and source eNB co-sited, obtaining should be to
Switch the TA value between UE and source eNB, using the TA value as the transmission delay reference information；Alternatively, obtaining the to be switched UE
With the TA value between the eNB of the source, and convert the TA value be UMTS PD value, using the PD value as the transmission delay reference information.
Optionally, which specifically can be used for: if target NodeB and source eNB are non-co-sited, obtaining should
The location information of to be switched UE, using the location information of the to be switched UE as the transmission delay reference information.
Optionally, which specifically can be used for: if target NodeB and source eNB are non-co-sited, obtaining should
The location information of the location information of to be switched UE and target NodeB；According to the location information of the to be switched UE and the target
PD value between the positional information calculation of the NodeB to be switched UE and target NodeB, by the to be switched UE and the target
PD value between NodeB is as the transmission delay reference information.
The device of the present embodiment, can be used for executing the technical solution of embodiment of the method shown in Fig. 1, and concrete function is detailed in
Above method embodiment, details are not described herein again.
Fig. 5 is the structural schematic diagram of the second network controller of one embodiment of the invention, as shown in figure 5, the second network control
Device processed may include: receiving module 51, processing module 52 and the second sending module 53.Wherein, which can be used for
Receive the switching request including transmission delay reference information that first network access point is sent；The processing module 52 can be used for root
The transmission delay information between to be switched UE and the second network access point is determined according to the transmission delay reference information；Second transmission
Module 53, which can be used for sending the wireless link including the transmission delay information to second network access point, requests, described
It is synchronous with to be switched UE progress network switching that wireless link request is used to indicate second network access point.
Optionally, which can be source eNB, which can be target NodeB, should
Second network controller can be Target RNC.
Optionally, which can be used for determining uplink synchronous in network switching process for target NodeB
Search window size.
Optionally, which specifically can be used for: the transmission delay reference information is the to be switched UE and the source
The TA value is then transformed to the PD value of UMTS by the TA value between eNB, using the PD value as the transmission delay information.
Optionally, which specifically can be used for: the transmission delay reference information is the position of the to be switched UE
Information then obtains the location information of target NodeB, according to the position of the location information of the to be switched UE and target NodeB
Information calculates the PD value between the to be switched UE and target NodeB, by the PD value between the to be switched UE and target NodeB
As the transmission delay information.
The device of the present embodiment, can be used for executing the technical solution of embodiment of the method shown in Fig. 2, and concrete function is detailed in
Above method embodiment, details are not described herein again.
Fig. 6 is the structural schematic diagram of one embodiment of the invention base station, as shown in fig. 6, the base station may include: transmitter
61, receiver 62, memory 63 and the processor being connect respectively with the transmitter 61, the receiver 62 and the memory 63
64, wherein batch processing code is stored in the memory 63, and the processor 64 is for calling the journey stored in the memory 63
Sequence code can execute the technical solution of embodiment of the method shown in FIG. 1, and concrete function is detailed in above method embodiment, this
Place repeats no more.
Fig. 7 is the structural schematic diagram of one embodiment of the invention network controller, as shown in fig. 7, the network controller can be with
Include: transmitter 71, receiver 72, memory 73 and respectively with the transmitter 71, the receiver 72 and the memory 73 connect
The processor 74 connect, wherein batch processing code is stored in the memory 73, and the processor 74 is for calling the memory 73
The program code of middle storage, can execute the technical solution of embodiment of the method shown in Fig. 2, and concrete function is detailed in the above method
Embodiment, details are not described herein again.
The above-mentioned integrated unit being realized in the form of SFU software functional unit can store and computer-readable deposit at one
In storage media.Above-mentioned SFU software functional unit is stored in a storage medium, including some instructions are used so that a computer
It is each that equipment (can be personal computer, server or the network equipment etc.) or processor (processor) execute the present invention
The part steps of embodiment the method.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory (Read-
Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic or disk etc. it is various
It can store the medium of program code.
Those skilled in the art can be understood that, for convenience and simplicity of description, only with above-mentioned each functional module
Division progress for example, in practical application, can according to need and above-mentioned function distribution is complete by different functional modules
At the internal structure of device being divided into different functional modules, to complete all or part of the functions described above.On
The specific work process for stating the device of description, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (24)
1. a kind of method for switching network characterized by comprising
First network access point obtains to be switched user equipment (UE) to the transmission delay reference information of the second network access point, described
Transmission delay reference information is used to determine the transmission delay information between the to be switched UE and second network access point；
The first network access point sends the switching request including the transmission delay reference information to the second network controller,
The switching request is used to indicate second network controller and sends transmission delay information, control to second network access point
It is synchronous with the to be switched UE progress network switching to make second network access point；
Wherein, when the first network access point and the second network access point co-sited, the delay reference information includes:
Time advance TA value or transmission delay PD value between the to be switched UE and the first network access point；When first net
When network access point and second network access point are non-co-sited, the delay reference information includes: the position of the to be switched UE
The location information of the location information or the to be switched UE of information and second network access point.
2. the method according to claim 1, wherein the first network access point be source evolved base station eNB,
Second network access point is target BS NodeB, and second network controller is target radio network controller RNC.
3. according to the method described in claim 2, it is characterized in that, the transmission delay information is used to supply the target NodeB
Determine the search window size of uplink synchronous in network switching process.
4. according to the method in claim 2 or 3, which is characterized in that if the target NodeB and the source eNB co-sited,
The first network access point obtains the transmission delay reference information of to be switched UE, comprising:
The source eNB obtains the time advance TA value between the to be switched UE and the source eNB, using the TA value as described in
Transmission delay reference information；Alternatively,
The source eNB obtains the TA value between the to be switched UE and the source eNB, and it is logical for General Mobile to convert the TA value
The transmission delay PD value of letter system UMTS, using the PD value as the transmission delay reference information.
5. according to the method in claim 2 or 3, which is characterized in that if the target NodeB and the source eNB are non-co-sited,
Then the first network access point obtains the transmission delay reference information of to be switched UE, comprising:
The source eNB obtains the location information of the to be switched UE, using the location information of the to be switched UE as the transmission
Postpone reference information.
6. according to the method in claim 2 or 3, which is characterized in that if the target NodeB and the source eNB are non-co-sited,
Then the first network access point obtains the transmission delay reference information of to be switched UE, comprising:
The source eNB obtains the location information of the to be switched UE and the location information of the target NodeB；
The source eNB is to be cut according to the positional information calculation of the location information of the to be switched UE and the target NodeB
The PD value between UE and the target NodeB is changed, using the PD value between the to be switched UE and the target NodeB as described in
Transmission delay reference information.
7. according to any method of claim 2~6, which is characterized in that the first network access point is to the second network
Controller is sent after the switching request including the transmission delay reference information, further includes:
The switching request response that the source eNB is sent according to the Target RNC received sends network to the to be switched UE
Indication message, the network switching instruction information are used to indicate the to be switched UE and carry out network switching.
8. a kind of method for switching network characterized by comprising
Second network controller receives the switching request including transmission delay reference information that first network access point is sent；
Second network controller determines to be switched user equipment (UE) and the second network according to the transmission delay reference information
Transmission delay information between access point；
Second network controller sends the Radio Link including the transmission delay information to second network access point
Request is established, the wireless link request is used to indicate second network access point and the to be switched UE carries out network
Switching synchronizes；
Wherein, when the first network access point and the second network access point co-sited, the delay reference information includes:
Time advance TA value or transmission delay PD value between the to be switched UE and the first network access point；When first net
When network access point and second network access point are non-co-sited, the delay reference information includes: the position of the to be switched UE
Information.
9. according to the method described in claim 8, it is characterized in that, the first network access point be source evolved base station eNB,
Second network access point is target BS NodeB, and second network controller is target radio network controller RNC.
10. according to the method described in claim 9, it is characterized in that, the transmission delay information is used to supply the target NodeB
Determine the search window size of uplink signal in network switching process.
11. method according to claim 9 or 10, which is characterized in that the transmission delay reference information is described to be cut
The time advance TA value between UE and the source eNB is changed, then second network controller is according to the transmission delay with reference to letter
Breath determines the transmission delay information between to be switched UE and the second network access point, comprising:
The TA value is transformed to the transmission delay PD value of Universal Mobile Communication System UMTS by the Target RNC, by the PD value
As the transmission delay information.
12. method according to claim 9 or 10, which is characterized in that the transmission delay reference information is described to be cut
The location information of UE is changed, then second network controller determines to be switched UE and second according to the transmission delay reference information
Transmission delay information between network access point, comprising:
The Target RNC obtains the location information of the target NodeB；
The Target RNC according to the positional information calculation of the location information of the to be switched UE and the target NodeB to
Switch the PD value between the UE and target NodeB, using the PD value between the to be switched UE and the target NodeB as institute
State transmission delay information.
13. according to any method of claim 9~12, which is characterized in that second network controller receives first
After the switching request including transmission delay reference information that network access point is sent, further includes:
The Target RNC sends switching request response to the source eNB.
14. a kind of first network access point characterized by comprising
Module is obtained, the transmission delay reference information for obtaining to be switched user equipment (UE) to the second network access point is described
Transmission delay reference information is used to determine the transmission delay information between the to be switched UE and second network access point；
First sending module, for sending the switching request including the transmission delay reference information to the second network controller,
The switching request is used to indicate second network controller and sends transmission delay information, control to second network access point
It is synchronous with the to be switched UE progress network switching to make second network access point；
Wherein, when the first network access point and the second network access point co-sited, the delay reference information includes:
Time advance TA value or transmission delay PD value between the to be switched UE and the first network access point；When first net
When network access point and second network access point are non-co-sited, the delay reference information includes: the position of the to be switched UE
The location information of the location information or the to be switched UE of information and second network access point.
15. access point according to claim 14, which is characterized in that the first network access point is source evolved base station
ENB, second network access point are target BS NodeB, and second network controller is target radio network controller
RNC。
16. access point according to claim 15, which is characterized in that the transmission delay information is used to supply the target
NodeB determines the search window size of uplink synchronous in network switching process.
17. access point according to claim 15 or 16, which is characterized in that the acquisition module is specifically used for: if described
Target NodeB and the source eNB co-sited, then obtain the time advance TA value between the to be switched UE and the source eNB, by institute
TA value is stated as the transmission delay reference information；Alternatively, the TA value between the to be switched UE and source eNB is obtained, and
The transmission delay PD value that the TA value is Universal Mobile Communication System UMTS is converted, is joined using the PD value as the transmission delay
Examine information.
18. access point according to claim 15 or 16, which is characterized in that the acquisition module is specifically used for: if described
Target NodeB and the source eNB are non-co-sited, then obtain the location information of the to be switched UE, by the position of the to be switched UE
Information is as the transmission delay reference information.
19. access point according to claim 15 or 16, which is characterized in that the acquisition module is specifically used for: if described
Target NodeB and the source eNB are non-co-sited, then obtain the location information of the to be switched UE and the position of the target NodeB
Information；The to be switched UE according to the positional information calculation of the location information of the to be switched UE and the target NodeB and institute
The PD value between target NodeB is stated, using the PD value between the to be switched UE and the target NodeB as the transmission delay
Reference information.
20. a kind of second network controller characterized by comprising
Receiving module, for receiving the switching request including transmission delay reference information of first network access point transmission；
Processing module, for determining to be switched user equipment (UE) and the second network access point according to the transmission delay reference information
Between transmission delay information；
Second sending module is built for sending the Radio Link including the transmission delay information to second network access point
Vertical request, the wireless link request are used to indicate second network access point and cut with the to be switched UE progress network
Change synchronization；
Wherein, when the first network access point and the second network access point co-sited, the delay reference information includes:
Time advance TA value or transmission delay PD value between the to be switched UE and the first network access point；When first net
When network access point and second network access point are non-co-sited, the delay reference information includes: the position of the to be switched UE
Information.
21. controller according to claim 20, which is characterized in that the first network access point is source evolved base station
ENB, second network access point are target BS NodeB, and second network controller is target radio network controller
RNC。
22. controller according to claim 21, which is characterized in that the transmission delay information is used to supply the target
NodeB determines the search window size of uplink synchronous during network switching uplink synchronous.
23. the controller according to claim 21 or 22, which is characterized in that the processing module is specifically used for: the biography
The TA value, then be transformed to by time advance TA value of the defeated delay reference information between the to be switched UE and the source eNB
The transmission delay PD value of Universal Mobile Communication System UMTS, using the PD value as the transmission delay information.
24. the controller according to claim 21 or 22, which is characterized in that the processing module is specifically used for: the biography
The location information that defeated delay reference information is the to be switched UE, then obtain the location information of the target NodeB, according to described
To be switched UE described in the positional information calculation of the location information of to be switched UE and the target NodeB and the target NodeB it
Between PD value, using the PD value between the to be switched UE and the target NodeB as the transmission delay information.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2013/082703 WO2015027476A1 (en) | 2013-08-30 | 2013-08-30 | Network switching method, access point, controller and base station |
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| CN104641685A CN104641685A (en) | 2015-05-20 |
| CN104641685B true CN104641685B (en) | 2019-05-28 |
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| WO2021168665A1 (en) * | 2020-02-25 | 2021-09-02 | Oppo广东移动通信有限公司 | Communication method and apparatus |
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| CN109068392B (en) * | 2018-09-27 | 2022-11-01 | 京信网络系统股份有限公司 | User scheduling method, device and base station |
| CN111162870B (en) * | 2019-12-09 | 2023-04-07 | 南京大鱼半导体有限公司 | Method, device, storage medium, terminal and network equipment for controlling data transmission |
| CN116847358A (en) * | 2022-03-25 | 2023-10-03 | 华为技术有限公司 | Verification method and communication device for terminal equipment position |
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| CN1859745A (en) * | 2005-12-16 | 2006-11-08 | 华为技术有限公司 | Synchronous method in broad band CDMA network common frequency switching |
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| CN104641685A (en) | 2015-05-20 |
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