CN109511142A - A method of the holding UE connection based on blind redirection - Google Patents
A method of the holding UE connection based on blind redirection Download PDFInfo
- Publication number
- CN109511142A CN109511142A CN201811521443.XA CN201811521443A CN109511142A CN 109511142 A CN109511142 A CN 109511142A CN 201811521443 A CN201811521443 A CN 201811521443A CN 109511142 A CN109511142 A CN 109511142A
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- Prior art keywords
- target
- cell
- rrc connection
- tau
- message
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Classifications
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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
- H04W36/0077—Transmission or use of information for re-establishing the radio link of access information of target access point
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/32—Reselection being triggered by specific parameters by location or mobility data, e.g. speed data
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/16—Discovering, processing access restriction or access information
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
- H04W60/005—Multiple registrations, e.g. multihoming
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
- H04W76/27—Transitions between radio resource control [RRC] states
Abstract
A kind of method that the present invention proposes holding UE connection based on blind redirection, the scene that this method occurs cell reselection in LTE system just for UE and occurs with Idle state TAU, comprising steps of when UE is after Target cell completes TAU process, target BS responds the RRC connection that core net requires release UE, then the ARFCN for redirecting carrying own target cell in cell for issuing RRC connection release message to UE, and including in RRC connection release message；Target BS guides UE to initiate to register again in Target cell by initiating the blind redirection to itself.Technical solution provided by the invention is convenient and efficient, avoid the cumbersome of manual operation mobile phone, significant increase user experience.
Description
Technical field
The present invention relates to LTE mobile communication technology field, the side of especially a kind of holding UE connection based on blind redirection
Method.
Background technique
In LTE system, the UE in Idle state can triggering cell gravity treatment in moving process.Cell reselection process is
Refer to: UE monitors the signal quality of adjacent area and current area at the idling mode, and the top-quality cell of selection signal mentions
For service signal, when the signal quality of adjacent area and level meet S criterion and meet pre-set gravity treatment decision rule, eventually
End (UE) will access this cell and be resident.
In reuse adoption process, if Target cell and the TAC (Tracking Area Code) of source cell are different, UE can initiate TAU (tracking
Area update) process, TAU process is exactly when UE is moved to another TA by a TA (tracking area), it is necessary on new TA
Location register is re-started, with the location information of this UE for notifying network change to store originally.After the completion of TAU, target BS meeting
The RRC connection that core net requires release UE is responded, after discharging RRC connection, if not new business demand, UE will locate always
In Idle state.In the scene of certain LTE base stations application, such as using base station UE is positioned, base station is utilized to carry out gate inhibition
Control carries out safety check etc. using base station, and UE is needed to keep connected state, although passing through flight re-registration or turn-on data stream at this time
The modes such as amount can satisfy demand, but requires people and actively remove operating handset, time-consuming and laborious.
Summary of the invention
Goal of the invention: to solve the above-mentioned problems, technology of the present invention for cell reselection and TAU process in LTE system
Feature, a kind of method for proposing holding UE connection based on blind redirection are small for occurring in Idle state and because position is mobile
The UE of area's gravity treatment, when UE is when Target cell completes TAU process and discharges RRC connection, target BS arrives itself by initiating
Blind redirection to guide UE, register in Target cell again by initiation.
Technical solution: in order to realize the above technical effect, technical solution proposed by the present invention are as follows:
A method of the holding UE connection based on blind redirection, the method comprising the steps of:
(1) when since position is mobile cell reselection occurs for the UE for being in Idle state in LTE system, UE is in target BS
Target cell carries out TAU process；
(2) after the completion of TAU process, target BS responds the RRC connection that core net requires release UE, then issues RRC company
The ARFCN for redirecting carrying own target cell in cell that release message is connect to UE, and includes in RRC connection release message；
(3) target BS initiates the blind redirection to oneself；
(4) after UE receives the RRC connection release message comprising blind redirection information that target BS is sent, according to blind heavy
Directed information carries out cell searching, after searching former Target cell, initiates registration in Target cell again, establishes RRC connection.
Further, the TAU process includes the steps that successively executing (2-1) to (2-5):
(2-1) described UE establishes RRC with target BS and connect；
After the completion of (2-2) RRC connection is established, the UE sends TAU request to core net by target BS；
The forwarding of (2-3) target BS accepts message to the UE by the TAU that core net is replied, if in TAU received message
Comprising the GUTI that core net gives the UE to redistribute, then the UE replys TAU to core net by target BS and completes message,
Otherwise, the UE does not reply any message；
(2-4) TAU process terminates.
The utility model has the advantages that compared with prior art, present invention has the advantage that
The scene that the present invention occurs cell reselection in LTE system just for UE and occurs with Idle state TAU, the party
Target BS guides UE to initiate registration in Target cell again to keep by initiating the blind redirection to itself in method
RRC connection, it is convenient and efficient, avoid the cumbersome of manual operation mobile phone, significant increase user experience.
Detailed description of the invention
Fig. 1 is flow chart of the invention；
Fig. 2 is the system architecture diagram in embodiment.
Specific embodiment
The scene that the present invention occurs cell reselection in LTE system just for UE and occurs with Idle state TAU, the party
Target BS guides UE to initiate registration in Target cell again to keep by initiating the blind redirection to itself in method
RRC connection, the present invention will be further explained with reference to the accompanying drawing.
It is illustrated in figure 2 the system architecture diagram that embodiment provides, the cell 1 and cell 2 in figure are that two adjacent LTE are small
The TAC in area, the two is different, and UE most starts to reside in cell 1, is in Idle state, and rear UE is moved near cell 2, occurs small
Area's gravity treatment.In the present embodiment, cell 1 is source cell, and base station 1 is source base station, and cell 2 is Target cell, and base station 2 is target base
It stands.
When UE is in idle condition and is moved to cell 2 from cell 1, UE sends RRC connection request message and gives target base
It stands, target BS replys RRC connection and establishes message, and UE replys RRC connection setup complete message, since TAC changes, UE hair
Idle state TAU is played, UE sends TAU request message to target BS, and target BS is transmitted to core net, establishes RRC to this UE and connects
The process connect terminates；Target BS forwarding accepts message to UE by the TAU that core net is replied, if within the message including core net
To the GUTI that UE is redistributed, then UE replys TAU and completes message, and otherwise, UE does not reply any message.Target BS issues RRC
To UE, the Idle state TAU process to this UE terminates connection release message；Target BS is released in the above-mentioned RRC connection for being sent to UE
The ARFCN for carrying itself in the redirection cell that message includes is put, blind redirection is initiated；UE according to above-mentioned blind redirection information into
Row cell searching initiates registration in Target cell again, establishes RRC connection.
As shown in Figure 1 it is overall flow figure of the invention, whole flow process is divided into 9 steps:
S1:UE sends RRC connection request message to target BS；
S2: target BS replys RRC connection to UE and establishes message, and UE replys RRC connection foundation to target BS and completes to disappear
Breath；
The process that S3:UE establishes RRC connection terminates, and UE sends TAU request to core net by target BS；
S4: after core net receives TAU request, being forwarded by target BS and accept message to UE by the TAU that core net is replied,
If the GUTI redistributed within the message comprising core net to UE, UE reply TAU and complete message；Otherwise, UE, which is not replied, appoints
What is the need cease；
S5:TAU process is completed；
S6: the RRC connection between target BS release and UE sends RRC connection release message, RRC Connection Release to UE
The ARFCN of Target cell under target BS is carried in the redirection cell that message includes；Target BS is initiated to the blind of oneself
It redirects；
After the RRC connection release message comprising blind redirection information of the S7:UE according to the target BS transmission received, into
Row cell searching, after searching former Target cell, initiates registration in Target cell again, sends RRC connection to target BS
Request message；
S8: target BS replys RRC connection and establishes message to UE, and UE reply RRC connection setup complete message gives target base
It stands；
The RRC connection of S9:UE, which is established, to be completed.
The above description is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the professional skill of this field
For art personnel, the present invention can there are many variations.All any modifications made in the spirit and principles in the present invention are equally replaced
It changes and improves, should all be included in the protection scope of the present invention.
Claims (2)
1. a kind of method of the holding UE connection based on blind redirection, it is characterised in that；Comprising steps of
(1) when since position is mobile cell reselection occurs for the UE for being in Idle state in LTE system, target of the UE in target BS
Cell carries out TAU process；
(2) after the completion of TAU process, target BS responds the RRC connection that core net requires release UE, then issues RRC connection and releases
The ARFCN for redirecting carrying own target cell in cell that message is put to UE, and includes in RRC connection release message；
(3) target BS initiates the blind redirection to oneself；
(4) after UE receives the RRC connection release message comprising blind redirection information that target BS is sent, according to blind redirection
Information carries out cell searching, after searching former Target cell, initiates registration in Target cell again, establishes RRC connection.
2. a kind of method of holding UE connection based on blind redirection according to claim 1, which is characterized in that described
TAU process includes the steps that successively executing (2-1) to (2-5):
(2-1) described UE establishes RRC with target BS and connect；
After the completion of (2-2) RRC connection is established, the UE sends TAU request to core net by target BS；
The forwarding of (2-3) target BS accepts message to the UE by the TAU that core net is replied, if including in TAU received message
The GUTI that core net gives the UE to redistribute, then the UE replys TAU to core net by target BS and completes message, no
Then, the UE does not reply any message；
(2-4) TAU process terminates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811521443.XA CN109511142A (en) | 2018-12-12 | 2018-12-12 | A method of the holding UE connection based on blind redirection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811521443.XA CN109511142A (en) | 2018-12-12 | 2018-12-12 | A method of the holding UE connection based on blind redirection |
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| Publication Number | Publication Date |
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| CN109511142A true CN109511142A (en) | 2019-03-22 |
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| CN201811521443.XA Pending CN109511142A (en) | 2018-12-12 | 2018-12-12 | A method of the holding UE connection based on blind redirection |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112399443A (en) * | 2019-08-19 | 2021-02-23 | Oppo（重庆）智能科技有限公司 | Release method, terminal, core network element and computer storage medium |
| CN113055960A (en) * | 2019-12-27 | 2021-06-29 | 北京融昱信息技术有限公司 | Base station reselection method, device, equipment and medium |
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| US20140106751A1 (en) * | 2012-10-11 | 2014-04-17 | Mediatek Inc. | Methods for autonomous fast return to preferred rat and communications apparatuses utilizing the same |
| CN105828402A (en) * | 2015-01-06 | 2016-08-03 | 中国移动通信集团江苏有限公司 | Blind redirection method, core network and base station |
| CN107968996A (en) * | 2016-10-19 | 2018-04-27 | 大唐移动通信设备有限公司 | A kind of method, Target cell and the cell-of-origin of acquisition IMSI |
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2018
- 2018-12-12 CN CN201811521443.XA patent/CN109511142A/en active Pending
Patent Citations (4)
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| CN102469519A (en) * | 2010-11-05 | 2012-05-23 | 大唐移动通信设备有限公司 | Control method of waiting time and equipment thereof |
| US20140106751A1 (en) * | 2012-10-11 | 2014-04-17 | Mediatek Inc. | Methods for autonomous fast return to preferred rat and communications apparatuses utilizing the same |
| CN105828402A (en) * | 2015-01-06 | 2016-08-03 | 中国移动通信集团江苏有限公司 | Blind redirection method, core network and base station |
| CN107968996A (en) * | 2016-10-19 | 2018-04-27 | 大唐移动通信设备有限公司 | A kind of method, Target cell and the cell-of-origin of acquisition IMSI |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112399443A (en) * | 2019-08-19 | 2021-02-23 | Oppo（重庆）智能科技有限公司 | Release method, terminal, core network element and computer storage medium |
| CN113055960A (en) * | 2019-12-27 | 2021-06-29 | 北京融昱信息技术有限公司 | Base station reselection method, device, equipment and medium |
| CN113055960B (en) * | 2019-12-27 | 2023-02-24 | 北京融昱信息技术有限公司 | Base station reselection method, device, equipment and medium |
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Application publication date: 20190322 |