CN106559775A - System information update method and device in a kind of LTE system - Google Patents
System information update method and device in a kind of LTE system Download PDFInfo
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- CN106559775A CN106559775A CN201510618884.1A CN201510618884A CN106559775A CN 106559775 A CN106559775 A CN 106559775A CN 201510618884 A CN201510618884 A CN 201510618884A CN 106559775 A CN106559775 A CN 106559775A
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- system information
- update
- beep
- page message
- updating
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/18—Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
- H04W8/20—Transfer of user or subscriber data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Databases & Information Systems (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
This application discloses the system information update method in a kind of LTE system, including：Resident network is determined by web search when synchronization is re-established after UE starts or step-out；When the UE sets up PCH channels for the first time, the reception of beep-page message is carried out in the position of first PO；After indicating system message occurs to update in the beep-page message, the system information after updating, and the system information after next system information modification cycle applying the update are extracted.Using the application, the renewal of system information during re-synchronization, can be carried out after UE starts or step-out in time.
Description
Technical field
The application is related to the channel detection techniques in communication system, when in more particularly to a kind of LTE system, UE starts shooting
PCH detection methods and device.
Background technology
System information is divided into master according to the difference of the significance level and transmission means of broadcast message content by LTE system
Chunk MIB (MasterInformationBlock) and multiple system information block SIB (SystemInformationBlocks).
System information will not be constant always, and in UE sides, if system information long-time (3h) is constant, UE can taste again
Receipts of trying system information.If network side system information changes, then network side is accomplished by notifying that UE updates
System information.
Generally, the scene that system information updates has three：
1) neighboring BS information change；
2) number of users change modification SRS or CQI resource allocation informations；
3) system information updates once for 3 hours；
4) change of this cell system information, the such as change of UE maximum transmission power；
In order to ensure that UE is consistent with network side system information, TD-LTE system introduces the system information modification cycle
Concept：System information contents within the modification cycle do not change, and system information modification is repaiied from next system information
The initial time for changing the cycle starts, i.e., after UE learns changing system information, in next start time in modification cycle
Update system information.
According to the detailed process in agreement 36.331-940 as shown in figure 1, wherein with the system that different pattern labelling is different
Information, Lycoperdon polymorphum Vitt represent old system information, and slash represents the system information after updating.
Wherein, BCCH modification period=ModifyPeriodCoeff × defaultPagingCycle.
TD-LTE system supports the advice method of two kinds of system information changes：
1) network side using carry systemInfoModification contents beep-page message come notify idle condition and
Connection status UE changing system information, UE update system information when starting in the next modification cycle.
2) systemInfoValueTag (service system information changes label) information is carried in SIB1, if UE reads
The change label for taking and the difference for storing before, then it represents that system information occurs change, needs to re-read.
In order to reduce the power consumption of the UE under RRC_IDLE states, UE uses discontinuous reception mode (DRX)
Receive beep-page message.UE under RRC_IDLE states monitors PDCCH in specific subframe, and these specific subframes claim
For paging occasion, the radio frames that these subframes are located referred to as paging radio frames (PF), two ginsengs related to PF, PO
Number is T and nB, and the two parameters are by system information SIB2 notice UE.Wherein, T represents DRX parameters, network
This parameter can be broadcasted in system information SIB2 to terminal, its span is 32,64,128,256.
By the way of notifying that for using beep-page message system information occurs change, Jing tests, for the UE of firm start
Jing cannot often ensure that system information upgrades in time.
The content of the invention
The application provides system information update method and device in a kind of LTE system, ensure that the UE of firm start
Upgrade in time system information.
For achieving the above object, the application is adopted the following technical scheme that：
A kind of system information update method in LTE system, including：
Resident network is determined by web search when synchronization is re-established after UE starts or step-out；
When the UE sets up PCH channels for the first time, the reception of beep-page message is carried out in the position of first PO；
After indicating system message occurs to update in the beep-page message, the system information after updating is extracted, and next
System information after individual system information modification cycle applying the update.
A kind of system information updating device in LTE system, including：Search net unit, paging receiving unit and system letter
Breath updating block；
It is described to search net unit, determined by web search during for re-establishing synchronization after UE starts or step-out resident
Network；
The paging unit, for when it is determined that setting up PCH channels for the first time after resident network, first PO's
Position carries out the reception of beep-page message；After indicating system message occurs to update in the beep-page message, system letter is notified
Breath updating block；
The system information updating block, for extracting the system information after updating, and in next system information modification
System information after cycle applying the update.
As seen from the above technical solution, in the application, when synchronization is re-established after UE starts or step-out, pass through web search
It is determined that resident network；When UE sets up PCH channels for the first time, connecing for beep-page message is carried out in the position of first PO
Receive；After indicating system message occurs to update in beep-page message, the system information after updating is extracted, and in next system
System information after system information modification cycle applying the update.By the way, even if seeking due to searching network process and miss
Exhale opportunity, it is also possible to which the beep-page message carried out by active is received, and finds the renewal of system information in time, so as to ensure
Upgrade in time system information.
Description of the drawings
Fig. 1 is the notice schematic diagram in agreement 36.331-940 with regard to system information change；
Fig. 2 be UE start shooting or step-out after the schematic diagram of a scenario of paging occasion is missed in re-synchronization process；
Fig. 3 is the basic procedure schematic diagram of system information update method in the application；
Fig. 4 is actively to carry out the schematic diagram of PAGING receptions in present application example.
Specific embodiment
In order that the purpose of the application, technological means and advantage become more apparent, below in conjunction with accompanying drawing to this Shen
Please be described in further details.
When notifying that when using beep-page message system information occurs change, just the UE Jing of start cannot often ensure system
Information upgrades in time.After starting shooting below by the process and UE to system information change is notified using beep-page message
The concrete process comparison that carries out in sequential, with analyze UE cannot upgrade in time system information the reason for.
Specifically, scene is as illustrated in fig. 2, it is assumed that BCCH modification period (n) beep-page message, leads to
Know UE changing system informations, under normal circumstances, be that communication breath changes in next cycle.And UE starts
Or after step-out, re-establish synchronous process, PAGING cannot be received the net initial stage is searched.When PCH channels are built
After having stood, the period for receiving PAGING may be had already passed by, now the system information of UE is old system information,
So as to cause the system information of base station and end side inconsistent.As can be seen here, reception is missed just because of UE
The time of PAGING, therefore the system information that do not upgrade in time.
To solve the above problems, it may be considered that the modification of base station side, increase the transmission times of PAGING, so
Can increase the time delay of system information renewal, and system side needs to increase the subframe for sending PAGING, causes
Empty overhead increases.And increase transmission times, probability can only be reduced, thoroughly can not be solved the above problems.
Based on the reason for above-mentioned analysis, the application provides a kind of system information update method, as shown in figure 3, should
Method flow includes：
Step 301, determines resident network by web search when synchronization is re-established after UE starts or step-out.
The process of this step is identical with existing mode, just repeats no more here.
Step 302, when UE sets up PCH channels for the first time, actively carries out paging in the position of first PO and disappears
The reception of breath.
In this method flow process, in addition to carrying out PAGING receptions in normal PO, PF position, UE is building
During vertical PCH channels, regardless of whether the receiving time of miss page messages PAGING, actively in first PO
Position carry out the reception of a PAGING, update sent out due to system information so as to ensure that UE will not be missed
The beep-page message for sending.
Step 303, if indicating in the beep-page message that step 302 is received, system information occurs to update, and extracts more
System information after new, and the system information after next system information modification cycle applying the update.
The reception of the beep-page message carried out by active determines whether service system information occurs to update, if do not sent out
Raw to update, then process ends, in the event of updating, then extract the system information after updating, and in the next one
System information after system information modification cycle applying the update.
So far, the system information update method flow process in the application terminates.By said method flow process, open in UE
When re-establishing synchronous after machine or step-out, even if the receiving time of beep-page message is missed due to searching network process,
Whether the reception of the beep-page message actively carried out when can set up PCH by first time, find system information in time
Update, so as to avoid the inconsistent of base station and end side system information.
A specific example is given below, as shown in figure 4, modification cell configuration causes cell to be closed, cell
Descending no data is issued, and causes terminal off-grid, cell to reactivate, and UE searches the net initial stage and do not receive PAGING,
Therefore UE has received time of all system informations of cell and may miss PAGING detection times, so as to cannot
Learn that the system information next modification cycle will update.If it is the cell-level SRS resource of end side and base station side is not
Alignment, then upper line number is passed does not avoid cell-level SRS, then can cause up error code.But, using above-mentioned
After system information update method shown in Fig. 3, when PCH channels are set up, active reception system information, with regard to energy
Enough renewals for carrying out system information in time, it is ensured that the system information of end side and base station side is consistent, solve system
The inconsistent problem of system message, so as to avoid the occurrence of the problem that up error code increases.
In above-mentioned as the application, system information update method implements.Present invention also provides a kind of system
Information updating apparatus, can be used for implementing above-mentioned update method.Specifically, the system information in the application updates
Device includes：Search net unit, paging receiving unit and system information updating block.
Wherein, net unit is searched, and is determined by web search during for synchronization being re-established after UE starts or step-out
Resident network.Paging unit, for when it is determined that setting up PCH channels for the first time after resident network, at first
The position of PO carries out the reception of beep-page message；After in the beep-page message for receiving, indicating system message occurs to update,
Notify system information updating block.System information updating block, the system information after updating for extraction, and
System information after next system information modification cycle applying the update.
Presently preferred embodiments of the present invention is the foregoing is only, it is not to limit the present invention, all in the present invention
Spirit and principle within, any modification, equivalent substitution and improvements done etc. should be included in guarantor of the present invention
Within the scope of shield.
Claims (2)
1. the system information update method in a kind of LTE system, it is characterised in that include：
Resident network is determined by web search when synchronization is re-established after UE starts or step-out；
When the UE sets up PCH channels for the first time, the reception of beep-page message is carried out in the position of first PO；
After indicating system message occurs to update in the beep-page message, the system information after updating is extracted, and next
System information after individual system information modification cycle applying the update.
2. the system information updating device in a kind of LTE system, it is characterised in that include：Search net unit, paging
Receiving unit and system information updating block；
It is described to search net unit, determined by web search during for re-establishing synchronization after UE starts or step-out resident
Network；
The paging unit, for when it is determined that setting up PCH channels for the first time after resident network, first PO's
Position carries out the reception of beep-page message；After indicating system message occurs to update in the beep-page message, system letter is notified
Breath updating block；
The system information updating block, for extracting the system information after updating, and in next system information modification
System information after cycle applying the update.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510618884.1A CN106559775B (en) | 2015-09-25 | 2015-09-25 | Method and device for updating system information in LTE (Long term evolution) system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510618884.1A CN106559775B (en) | 2015-09-25 | 2015-09-25 | Method and device for updating system information in LTE (Long term evolution) system |
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| CN106559775A true CN106559775A (en) | 2017-04-05 |
| CN106559775B CN106559775B (en) | 2020-09-25 |
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| CN114640952A (en) * | 2020-12-15 | 2022-06-17 | 上海华为技术有限公司 | Message processing method, terminal and network equipment |
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| CN106559775B (en) | 2020-09-25 |
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