CN104053190B - A kind of method of user equipment migration under PCI conflicts or alias condition - Google Patents
A kind of method of user equipment migration under PCI conflicts or alias condition Download PDFInfo
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- CN104053190B CN104053190B CN201310076359.2A CN201310076359A CN104053190B CN 104053190 B CN104053190 B CN 104053190B CN 201310076359 A CN201310076359 A CN 201310076359A CN 104053190 B CN104053190 B CN 104053190B
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Abstract
This application discloses a kind of Physical Cell Identifier（PCI）The method of user equipment migration under conflict or alias condition, including：A, user equipment of the base station into the base station cell sends wireless heterogeneous networks（RRC）Connection reconfiguration message, in the RRC connection reconfiguration message, source and destination are the serving cell of the user's equipment, and carry new PCI；After RRC connection reconfiguration message is sent, base station carries out the modification of PCI and the renewal of user device configuration parameter；B, after user equipment receives RRC connection reconfiguration message, the PCI in the RRC connection reconfigurations message carries out down-going synchronous；After down-going synchronous success, using the lead code initiating random access procedure of RRC connection reconfigurations message carrying, uplink synchronous is carried out；After random access success, send the instruction of re-matching completion message to base station and switch successfully.
Description
Technical field
This application involves mobile communication technology field, more particularly to a kind of Physical Cell Identifier（PCI, Physical Cell
Identifier）User equipment under conflict or alias condition（UE）The method of migration.
Background technology
Physical Cell Identifier（PCI, Physical Cell Identifier）It is the crucial ginseng for determining a cell scrambling
Number, so and establish the basic parameter of cell, it is expressed as an orthogonal sequence and the unique combinations of a pseudo-random sequence,
Value range is 0~503.When a new base station（eNode B）During accessing mobile communication network, it must just be selected when establishing cell
Select a suitable PCI value and meet following three conditions：
1. exempt to conflict：In the scope of this MPS process, this PCI value is unique.Serving cell and its adjacent cell
PCI values are also different.
2. exempt to obscure：The PCI values of all adjacent cells of serving cell cannot repeat.
3. reference signal-to-interference is minimum：Since PCI values are related with the distribution of reference signal, by reasonable distribution PCI, try one's best
The reference signal of neighboring interval is mapped on different physical resources, disturbed between reduction reference signal.
For limited PCI resource, when carrying out plot planning, due to there is artificial, wireless environment factor and different factory
The reasons such as family's on-premise network, can not fundamentally avoid PCI from conflicting or obscure, therefore need to realize after PCI conflicts or obscures
Online user's equipment transportation.Current a kind of common method deletes the re-matching built and complete PCI by direct cell, and this method compares
Roughly, intra-cell users equipment is caused to go offline；Another method is by reducing base station transmitting power triggering cell edge customer
Adjacent area is switched to, but this method is limited by adjacent area coverage and serving cell, central user can not be by reducing work(
Community user migration is completed in rate triggering switching, is also resulted in certain customers' equipment and is gone offline.
The content of the invention
This application provides the method that UE under a kind of PCI conflicts or alias condition is migrated, can be migrated to avoid community user
During user equipment go offline.
The method that the embodiment of the present application provides user equipment migration under a kind of PCI conflicts or alias condition, including：
A, user equipment of the base station into the base station cell sends RRC connection reconfiguration message, the RRC connection reconfiguration message
In, source and destination are the serving cell of the user's equipment, and carry new PCI；RRC connection reconfiguration message is sent
Afterwards, base station carries out the modification of PCI and the renewal of user device configuration parameter；
B, after user equipment receives RRC connection reconfiguration message, the PCI in the RRC connection reconfigurations message is carried out down
Row is synchronous；Down-going synchronous success after, using the RRC connection reconfigurations message carry lead code initiating random access procedure, into
Row uplink synchronous；After random access success, send the instruction of re-matching completion message to base station and switch successfully.
It is preferred that before step A, further comprise：According to the selection algorithm of PCI re-matchings, wireless operation maintenance center
The cell of re-matching and new PCI are treated in OMCR selections, and the PCI reallocation messages for carrying new PCI are sent to the base station of selected cell.
It is preferred that user equipment of the base station described in step A into the base station cell sends radio resource control RRC connection weight
Include with message：
After base station chain of command receives PCI reallocation messages, RRC connection reconfigurations are assembled respectively for each user equipment in cell
Message, in the message body mobility control information of RRC connection reconfiguration message, fills in switching purpose PCI and physical accidental access
Channel PRACH resources, and RRC connection reconfigurations message is eated dishes without rice or wine to user equipment by the process transmission of source frequency point and original PCI scramblings.
Include it is preferred that base station described in step A carries out the modification of PCI and the renewal of user device configuration parameter：
Base station chain of command starts cell switching timer, and notice scheduling processing unit carries out needing the user migrated to set
Standby configuration parameter renewal, including PRACH resource modifyings；
After scheduling processing unit completes the configuration parameter renewal of user equipment, customer parameter config update is sent to chain of command
Response message, confirms that parameter comes into force；
Cell switch overtime, or all customer parameter config update response messages are completed, and chain of command passes through small
Area's reallocation message notice baseband processing unit modification PCI information.
It is preferred that the cell switching timer is less than the duration of timer t304,50~2000ms of value range.
It is preferred that after base station chain of command receives PCI reallocation messages, further comprise：Start PCI re-matching timers；
Further comprise after step B：The PCI re-matchings timer expiry of base station chain of command or the online user of cell are whole
After handover success, the PCI re-matchings result of cell is notified into OMCR.
As can be seen from the above technical solutions, handoff scenario is actively simulated by base station（Cell-of-origin and purpose cell are same
One cell）Realize that user equipment carries out cell switching, its effect is normal switching flow from the point of view of user equipment, to base station side class
It is similar to user equipment switching within cell flow or re-matching flow；The flow is transparent for user equipment, it is experienced as normally
Switching flow.The advantages of this method is to realize user equipment without the PCI re-matchings to go offline, and in PCI re-matchings, triggering cell is not deleted and built,
I.e. PCI re-matchings do not perceive user.
Brief description of the drawings
Fig. 1 is the signaling process signal of user equipment migration under PCI provided by the embodiments of the present application conflicts or alias condition
Figure.
Embodiment
To overcome problems of the prior art, this application provides a kind of method of user equipment migration, it is designed
Thought is：Not by delete build cell realize PCI conflict or obscure cell PCI change, for occur PCI modification cell use
Family equipment, handoff scenario is actively simulated by base station（Cell-of-origin and purpose cell are same cell）It is small to realize that user equipment carries out
Area switches, its effect is normal switching flow from the point of view of user equipment, and the user equipment intra-cell change of current is similar to base station side
Journey or re-matching flow；The flow is transparent for user equipment, it is experienced as normal switching flow.The advantages of this method is
User equipment is realized without the PCI re-matchings to go offline, triggering cell is not deleted and built in PCI re-matchings, i.e., PCI re-matchings do not perceive user.
Specifically, technical scheme includes following basic process：
Base station side processing procedure：User equipment of the base station into the base station cell sends wireless heterogeneous networks（RRC）Connection
Reallocation message triggering user's switching, in the RRC connection reconfiguration message, source and destination are that the service of the user's equipment is small
Area, and carry amended PCI；Switching within cell flow or user is performed to eat dishes without rice or wine re-matching flow, and in reallocation message of eating dishes without rice or wine
To carrying out PCI modifications and the renewal of user device configuration parameter after sending, premise is provided for the synchronization of user equipment.
User side processing procedure：After user equipment receives RRC connection reconfiguration message, it will perform normal switching flow：
PCI in the RRC connection reconfigurations message carries out down-going synchronous；After down-going synchronous success, the RRC connection reconfigurations are used
The lead code initiating random access procedure that message carries, carries out uplink synchronous；After random access success, it is complete to send re-matching to base station
Indicate to switch successfully into message.
To mobile management entity（MME）Side, does not perceive user's switching.
To make the technical principle of technical scheme, feature and technique effect clearer, below in conjunction with specific reality
Example is applied technical scheme is described in detail.
Under PCI provided by the embodiments of the present application conflict or alias condition user equipment migration signaling process as shown in Figure 1,
Include the following steps：
Step 101：According to the selection algorithm of PCI re-matchings, wireless operation maintenance center（OMCR）The cell of re-matching is treated in selection
With new PCI, the PCI reallocation messages for carrying new PCI, triggering cell PCI re-matchings are sent to the base station chain of command of selected cell；
Step 102：After base station chain of command receives PCI reallocation messages, PCI re-matching timers are opened；For each in cell
User equipment assembles RRC connection reconfiguration message respectively, in the message body mobility control information of RRC connection reconfiguration message
（MobilityControlInfo）In, fill in switching purpose PCI and Physical Random Access Channel（PRACH）Resource, and pass through source
The process transmission of frequency point and original PCI scramblings eats dishes without rice or wine RRC connection reconfigurations message to user equipment；
Step 103：Chain of command starts cell switching timer, and notice scheduling processing unit carries out needing the use migrated
The configuration parameter renewal of family equipment, including PRACH resource modifyings；
Step 104：After scheduling processing unit completes the configuration parameter renewal of user equipment, customer parameter is sent to chain of command
Config update response message, confirms that parameter comes into force；
Step 105：Cell switch overtime（Duration of the timer less than timer t304, value range 50~
2000ms）, or all customer parameter config update response messages complete, chain of command by cell re-configuration message informing base band at
Manage unit modification PCI information；
Step 106：After user equipment receives RRC connection reconfiguration message, synchronization process is carried out；
Step 107：After the completion of synchronization, user equipment sends re-matching completion message to chain of command, illustrates RRC connections
Re-matching is completed；
Step 108：, will be small after the PCI re-matchings timer expiry of chain of command or the online user of cell all switch successfully
The PCI re-matchings result notice OMCR in area.
The signaling process is only used for illustrating technical scheme, is not used to limit technical scheme.
Specific signaling process may be different for different mobile communication system.
The foregoing is merely the preferred embodiment of the application, not to limit the protection domain of the application, it is all
The spirit of technical scheme and any modification, equivalent substitution, improvement and etc. within principle, done, should be included in this Shen
Within the scope of please protecting.
Claims (5)
1. a kind of method of user equipment migration under Physical Cell Identifier PCI conflicts or alias condition, it is characterised in that including：
A, user equipment of the base station into the base station cell sends radio resource control RRC connection reconfiguration message, RRC connections weight
With in message, source and destination are the serving cell of the user's equipment, and carry new PCI；RRC connection reconfiguration message
After sending, base station carries out the modification of PCI and the renewal of user device configuration parameter；
B, after user equipment receives RRC connection reconfiguration message, it is same that the PCI in the RRC connection reconfigurations message carries out downlink
Step；After down-going synchronous success, using the lead code initiating random access procedure of RRC connection reconfigurations message carrying, carry out
Row is synchronous；After random access success, send the instruction of re-matching completion message to base station and switch successfully；
Before step A, further comprise：According to the selection algorithm of PCI re-matchings, re-matching is treated in wireless operation maintenance center OMCR selections
Cell and new PCI, the PCI reallocation messages for carrying new PCI are sent to the base station of selected cell.
2. according to the method described in claim 1, it is characterized in that, user of the base station into the base station cell sets described in step A
Preparation send radio resource control RRC connection reconfiguration message to include：
After base station chain of command receives PCI reallocation messages, RRC connection reconfigurations are assembled respectively for each user equipment in cell and are disappeared
Breath, in the message body mobility control information of RRC connection reconfiguration message, fills in switching purpose PCI and physical accidental access letter
Road PRACH resources, and RRC connection reconfigurations message is eated dishes without rice or wine to user equipment by the process transmission of source frequency point and original PCI scramblings.
3. according to the method described in claim 1, it is characterized in that, base station described in step A carries out the modification of PCI and user sets
The renewal of standby configuration parameter includes：
Base station chain of command starts cell switching timer, and notice scheduling processing unit carries out the user equipment that needs are migrated
Parameter renewal is configured, including PRACH resource modifyings；
After scheduling processing unit completes the configuration parameter renewal of user equipment, customer parameter config update response is sent to chain of command
Message, confirms that parameter comes into force；
Cell switch overtime, or all customer parameter config update response messages are completed, and chain of command passes through cell weight
PCI information is changed with message informing baseband processing unit.
4. according to the method described in claim 3, it is characterized in that, the cell switching timer less than timer t304 when
It is long, 50~2000ms of value range.
5. according to the method described in claim 1, it is characterized in that, after base station chain of command receives PCI reallocation messages, further
Including：Start PCI re-matching timers；
Further comprise after step B：The PCI re-matchings timer expiry of base station chain of command or the online user of cell all switch
After success, the PCI re-matchings result of cell is notified into OMCR.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310076359.2A CN104053190B (en) | 2013-03-11 | 2013-03-11 | A kind of method of user equipment migration under PCI conflicts or alias condition |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310076359.2A CN104053190B (en) | 2013-03-11 | 2013-03-11 | A kind of method of user equipment migration under PCI conflicts or alias condition |
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| CN104053190A CN104053190A (en) | 2014-09-17 |
| CN104053190B true CN104053190B (en) | 2018-05-11 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017054134A1 (en) * | 2015-09-29 | 2017-04-06 | 华为技术有限公司 | Method and device for determining a frequency resource |
| US10652787B2 (en) * | 2016-02-04 | 2020-05-12 | Reliance Jio Infocomm Limited | Systems and methods for resolving a physical cell identity confusion in a heterogeneous network |
| CN107438271A (en) * | 2016-05-26 | 2017-12-05 | 中兴通讯股份有限公司 | Method and device, base station, user equipment and the system of cell switching |
| CN109429323B (en) * | 2017-06-30 | 2021-06-25 | 中国电信股份有限公司 | Method, device and system for activating and deactivating synchronization of transmission time interval-B (TTI-B) |
| CN110536488B (en) * | 2018-05-24 | 2021-08-20 | 华为技术有限公司 | Method and device for transmitting and receiving data during RRC reconfiguration |
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| CN101848505A (en) * | 2009-03-24 | 2010-09-29 | 大唐移动通信设备有限公司 | Plot switchover method based on multi-plot joint dispatching, device and system |
| CN102378198A (en) * | 2010-08-13 | 2012-03-14 | 电信科学技术研究院 | Cell configuration method and device |
| EP2466936A1 (en) * | 2009-09-14 | 2012-06-20 | ZTE Corporation | Method and system for identifying a terminal |
| CN102958118A (en) * | 2011-08-24 | 2013-03-06 | 中兴通讯股份有限公司 | Parameter updating method and device |
-
2013
- 2013-03-11 CN CN201310076359.2A patent/CN104053190B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101848505A (en) * | 2009-03-24 | 2010-09-29 | 大唐移动通信设备有限公司 | Plot switchover method based on multi-plot joint dispatching, device and system |
| EP2466936A1 (en) * | 2009-09-14 | 2012-06-20 | ZTE Corporation | Method and system for identifying a terminal |
| CN102378198A (en) * | 2010-08-13 | 2012-03-14 | 电信科学技术研究院 | Cell configuration method and device |
| CN102958118A (en) * | 2011-08-24 | 2013-03-06 | 中兴通讯股份有限公司 | Parameter updating method and device |
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