CN101778342B - Method and device for updating system information in wireless communication system - Google Patents
Method and device for updating system information in wireless communication system Download PDFInfo
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- CN101778342B CN101778342B CN 200910000661 CN200910000661A CN101778342B CN 101778342 B CN101778342 B CN 101778342B CN 200910000661 CN200910000661 CN 200910000661 CN 200910000661 A CN200910000661 A CN 200910000661A CN 101778342 B CN101778342 B CN 101778342B
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Abstract
The invention discloses a method and a device for updating system information in a wireless communication system. The method comprises the following steps that: a network side determines the interval time length between the current time and the ending boundary of the current modification period, and temporarily stores updated system information when the update of the system information is started; the network side judges whether the interval time length is larger than or equal to the preset threshold of the interval time length, if so, the network side sends the prompt for the update of the system information to UE (user equipment) at the current time, and if not, the network side sends the prompt for the update of the system information to the UE when reaching the next modification period; and the network side sends the updated system information to the UE in the next modification period after the prompt for the update is sent, and the network side validates the updated system information at the same time. The device of the invention comprises an interval time length determining module, a judging module, an update prompt sending module and a system information sending module. The invention avoids the problem that the validation of the system information on the network side and the UE side are not synchronous after the system information is updated.
Description
Technical field
The present invention relates to the digital mobile communication technical field, relate in particular to system information update method and device in a kind of wireless communication system.
Background technology
In radio honeycomb communication system, system can be by broadcast all UE(User Equipment in the residential quarter, subscriber equipment) issue some identical configuration informations, to save Radio Resource, UE obtains to play wireless connections with system made after enough access informations by the broadcast that receives.
At 3G (Third Generation) Moblie LTE(Long Term Evolution, Long Term Evolution) in system, network side is divided into a MIB(Master Information Block by broadcasting to the system information that the UE side sends, Master Information Block) and a plurality of SIB(System Information Blocks, system information block), a plurality of SIB respectively with SIB1, SIB2 etc. as the sign.Comprising more most important cell informations in system in MIB, is at BCH(Broadcast Channel, broadcast channel) upper transmission.In SIB, that more special is SIB1, and the schedule information of other SIB is deposited in the inside.And other SIB can be mapped to SI(System Information, system information) in.Be identical these SIB their dispatching cycles that are mapped to same SI.SIB1 and SI are at transmission channel DL-SCH(Downlink-Shared Channel, DSCH Downlink Shared Channel) upper transmission.
It is 40ms that MIB has fixing dispatching cycle, transmits first the Number at SFN(System Frame, System Frame Number) send in the #0 subframe of the radio frames of mod 4=0, and repeat in other radio frames within the cycle to send.
It is 80ms that SIB1 has fixing dispatching cycle, transmits first in the #5 subframe of the radio frames of SFN mod 8=0 to send, and repeats to send in the radio frames at the SFN mod 2=0 place within the cycle.
SI is that dynamic dispatching sends in a time window that is called as the SI window, and each SI has separately a time window and not overlapping mutually.The length w of time window can configure and be unified for all SI, on any one subframe in corresponding SI window, (except the #5 subframe of MBSFN subframe, even number radio frames) this SI can be repeated to send repeatedly, UE can be by monitoring PDCCH(Physical Downlink Control Channel, Physical Downlink Control Channel) the SI-RNTI(System Information Radio Network Temporary Identity on, system information Radio Network Temporary Identifier) determine the existence of SIB1 and SI.
RRC(Radio Resource Control, Radio Resource is controlled) regulation in agreement 36.331, system information is upgraded and is occurred on particular radio frames.Here introduce modification cycle (Modification Period) this concept.Modification cycle is longer than the transmission cycle of the SI of maximum at least, to guarantee that SI can send one or many within a modification cycle.Figure 1 shows that the send mode schematic diagram that in prior art, system information is upgraded, as seen from the figure, when system need to change system information, first notify the system information after then upgrading to the UE transmission to the information updating of UE transmitting system in the current modification cycle in the next one modification cycle.UE is when receiving the system information update notification, the border of the term of validity of current system information is set to the border in current modification cycle, when the next system information modification cycle arrives, original system information inefficacy (Invalid), UE reads the system information after renewal, until that all system informations read is complete.
The mode of notifying the UE system information to change at present realizes by paging (Paging) message.It is the systemInfoModification(system information modification that beep-page message has a field), systemInfoModification indication in the UE of RRC_IDLE state and RRC_CONNECTED state receives beep-page message, just learn that system information changes, need to read new system information in the cycle in next system information modification.The periodically-varied of system information needn't adopt this mechanism notice UE.
By seeing in Fig. 1, when the next system information modification cycle of receiving the system information update notification began, UE had thought that current own system information of preserving is invalid (Invalid) information, and begins to have received new system information.Because system information is MIB or SIB no matter, is all periodic scheduling, can not arrive at once at the very start UE in the cycle.Therefore, it is invalid to be set in original system information, and before receiving new system information, there is a blank phase in UE, namely without any effective broadcast message.
The trigger condition of initiating system update at network side is as follows:
1) system powers on, and the residential quarter is successfully established;
2) system information of network management configuration changes, and needs system information to upgrade;
3) system carries out the system information renewal that periodically verification triggers.
Above-mentioned these trigger conditions all not necessarily occur at the edge in the cycle of modification.As shown in Figure 2, this figure is the schematic diagram that system information is upgraded the contingent moment, if at any one moment network side of A, B, C, the system information renewal has occured, network side can be taked the system information after following dual mode upgrades to the UE transmission:
1) revise the cycle edge at the next one and begin transmitting system information updating prompting, and continue to send within the whole modification cycle; After this modification cycle finishes, the more next modification cycle begin to send new system information when arriving;
2) prompting of transmitting system information updating at once sends new system information after the next one modification cycle begins.
All there is certain defective in this two schemes.Method one may cause the time of transmitting system information updating prompting excessively late, if the eNodeB side allows new system information come into force once upgrading, the system information maximum possible with the UE side has two modification cycles asynchronous.If just come into force when the eNodeB side is waited until the transmitting system information updating, the opportunity of upgrading and the opportunity interval of coming into force are long, have affected the real-time of system; Method two may cause the time point of transmitting system information updating prompting too short from the end boundary time interval in current modification cycle, can't guarantee that all UE can receive system information renewal prompting within the current modification cycle.
Summary of the invention
The invention provides system information update method and device in a kind of wireless communication system, receive time difference new system information to the UE side to reduce after initiating system information and upgrade from network side, avoided network side and UE side to upgrade after the come into force generation of asynchronous problem on opportunity of system information.
For achieving the above object, the invention provides the system information update method in a kind of wireless communication system, comprise step:
A, upgrade when being activated when system information, network side is determined the interval duration between current time and the end boundary in current modification cycle, simultaneously the system information after temporary renewal;
B, network side judge whether described interval duration upgrades more than or equal to default transmission the interval duration threshold value of pointing out, if, point out to the information updating of subscriber equipment transmitting system at current time, otherwise, when arriving, points out to the information updating of subscriber equipment transmitting system in next modification cycle;
C, the network side next one after the transmitting system information updating prompting cycle of revising sends system information after upgrading to subscriber equipment, and it is invalid simultaneously the system information of the current employing of this side to be set to, and the system information after upgrading is set to effectively.
It is invalid that described subscriber equipment is set to the system message of current employing when the next one modification cycle after system information is upgraded prompting of receiving arrives, and after the system message after receiving renewal, this system message is set to effectively.
Further, comprise also before described steps A that network side presets the step that sends the interval duration threshold value of upgrading prompting.
In described steps A, when default renewal trigger condition satisfies, start system information and upgrade.
The present invention also provides the updating device of the system information in a kind of wireless communication system, comprising:
Interval duration determination module is used for determining the interval duration between current time and the end boundary in current modification cycle when the system information renewal is activated, and the system information after temporary the renewal;
Judge module, be used for judging whether described interval duration upgrades more than or equal to default transmission the interval duration threshold value of pointing out, if, triggering to upgrade points out sending module to point out to the information updating of subscriber equipment transmitting system at current time, otherwise, trigger to upgrade and point out sending module to point out to the information updating of subscriber equipment transmitting system when next modification cycle arrives; And the next one after upgrading prompting sending module transmitting system information updating prompting is revised the system information after cycle triggering system information sending module is upgraded to the subscriber equipment transmission;
Upgrade the prompting sending module, be used for pointing out to the information updating of subscriber equipment transmitting system under the triggering of judge module;
The system information sending module is used for sending system information after upgrading to subscriber equipment under the triggering of judge module, and it is invalid in transmitting system information, the system information of the current employing of this side to be set to, and the system information after upgrading is set to effectively.
Further, described device also comprises:
The Threshold module is used for presetting sending and upgrades the interval duration threshold value of pointing out.
Further, described device also comprises:
System information is upgraded trigger module, is used for when default renewal trigger condition satisfies, and starts system information and upgrades.
Technical scheme of the present invention is by judging whether current time satisfies a predefined transmission from the time interval of the end boundary in current modification cycle and upgrade the interval duration threshold value of pointing out, if satisfy, just point out in the information updating of current time transmitting system, if do not satisfy, just transmitting system is upgraded Indication message after the next one modification cycle begins.When network side sent new system information, the system information of network side just came into force.The present invention has guaranteed that when the generation systems information updating, network side can be notified UE new system information as early as possible, and guarantees DRX(Discontinuous Reception, discontinuous reception) fairness received of state UE.And, technical scheme of the present invention allows network side keep simultaneously two cover configurations, when sending new system information, new configuration just comes into force at network side, make the time of UE side and network side current system information inconsistency short as far as possible, more effectively avoided the come into force generation of asynchronous problem on opportunity of network side and UE side system information.
Description of drawings
Fig. 1 is the send mode schematic diagram that in prior art, system information is upgraded;
Fig. 2 is the schematic diagram that system information is upgraded the contingent moment;
Fig. 3 is the flow chart of the system information update method in wireless communication system of the present invention;
The mode schematic diagram of transmitting system information updating when Fig. 4 is T in the present invention 〉=Modification Threshold;
The mode schematic diagram of transmitting system information updating when Fig. 5 is T in the present invention＜Modification Threshold;
Fig. 6 is the structured flowchart of the system information updating device in wireless communication system of the present invention.
Embodiment
Major technique design of the present invention is by judging whether current time satisfies a predefined transmission from the time interval of the end boundary in current modification cycle and upgrade the interval duration threshold value of pointing out, if satisfy, just point out in the information updating of current time transmitting system, if do not satisfy, just transmitting system is upgraded Indication message after the next one modification cycle begins.When network side sent new system information, the system information of network side just came into force.Can guarantee like this shortest time of network side and UE side system information inconsistency, guarantee that simultaneously the UE side can receive within the same modification cycle of network side transmitting system information updating prompting that this renewals indicates, avoided the come into force generation of asynchronous problem on opportunity of network side and UE side system information.
Below in conjunction with each accompanying drawing, specific implementation process of the present invention is further described in detail.
See also Fig. 3, this figure is the flow chart of the system information update method in wireless communication system of the present invention, mainly comprises the following steps:
It is invalid that UE is set to the system message of current employing when the next one modification cycle after system information is upgraded prompting of receiving arrives, and after the system message after receiving renewal, this system message is set to effectively.
Corresponding to said method of the present invention, the present invention and then the updating device of the system information in a kind of wireless communication system is provided, see also Fig. 6, this figure is the structured flowchart of the system information updating device in wireless communication system of the present invention, it mainly comprises Threshold module, system information renewal trigger module, interval duration determination module, judge module, renewal prompting sending module and system information sending module, wherein
The Threshold module is used for setting sending and upgrades the interval duration threshold value of pointing out;
System information is upgraded trigger module, is used for when default renewal trigger condition satisfies, and starts system information and upgrades.
Interval duration determination module is used for determining the interval duration between current time and the end boundary in current modification cycle when the system information renewal is activated, and the system information after temporary the renewal;
Judge module, be used for judging the interval duration threshold value whether described interval duration points out more than or equal to default sent renewals, if, triggering to upgrade points out sending module to point out to the information updating of subscriber equipment transmitting system at current time, otherwise, trigger to upgrade and point out sending module to point out to the information updating of subscriber equipment transmitting system when next modification cycle arrives; And the next one after upgrading prompting sending module transmitting system information updating prompting is revised the system information after cycle triggering system information sending module is upgraded to the subscriber equipment transmission;
Upgrade the prompting sending module, be used for pointing out to the information updating of subscriber equipment transmitting system under the triggering of judge module;
The system information sending module is used for sending system information after upgrading to subscriber equipment under the triggering of judge module, and it is invalid in transmitting system information, the system information of the current employing of this side to be set to, and the system information after upgrading is set to effectively.
As fully visible, through sending the setting of the time threshold Modification Threshold that upgrades prompting, network side transmitting system information updating prompting within the current modification cycle as far as possible, when network side judges that transmitting system information updating prompting can not guarantee that UE can receive this prompting within this modification cycle, wait for that next cycle sends again, the system information with network side in transmitting system information updating prompting is set to effectively.Thereby effectively guaranteed the nonsynchronous shortest time of system information between UE and network side.
Obviously, those skilled in the art can carry out various changes and modification and not break away from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of claim of the present invention and equivalent technologies thereof, the present invention also is intended to comprise these changes and modification interior.
Claims (7)
1. the system information update method in a wireless communication system, is characterized in that, comprises step:
A, upgrade when being activated when system information, network side is determined the interval duration between current time and the end boundary in current modification cycle, simultaneously the system information after temporary renewal;
B, network side judge that whether described interval duration is more than or equal to default interval duration threshold value, if, point out to the information updating of subscriber equipment transmitting system at current time, otherwise, when arriving, points out to the information updating of subscriber equipment transmitting system in next modification cycle;
C, the network side next one after the transmitting system information updating prompting cycle of revising sends system information after upgrading to subscriber equipment, and it is invalid simultaneously the system information of the current employing of this side to be set to, and the system information after upgrading is set to effectively.
2. the method for claim 1, it is characterized in that, it is invalid that described subscriber equipment is set to the system information of current employing when the next one modification cycle after system information is upgraded prompting of receiving arrives, and after the system information after receiving renewal, this system information is set to effectively.
3. the method for claim 1, is characterized in that, comprises also before described steps A that network side presets the step that sends the interval duration threshold value of upgrading prompting.
4. method as described in claim 1 or 3, is characterized in that, in described steps A, when default renewal trigger condition satisfies, starts system information and upgrade.
5. the system information updating device in a wireless communication system, is characterized in that, comprising:
Interval duration determination module is used for determining the interval duration between current time and the end boundary in current modification cycle when the system information renewal is activated, and the system information after temporary the renewal;
Judge module, be used for judging whether described interval duration upgrades more than or equal to default transmission the interval duration threshold value of pointing out, if, triggering to upgrade points out sending module to point out to the information updating of subscriber equipment transmitting system at current time, otherwise, trigger to upgrade and point out sending module to point out to the information updating of subscriber equipment transmitting system when next modification cycle arrives; And the next one after upgrading prompting sending module transmitting system information updating prompting is revised the system information after cycle triggering system information sending module is upgraded to the subscriber equipment transmission;
Upgrade the prompting sending module, be used for pointing out to the information updating of subscriber equipment transmitting system under the triggering of judge module;
The system information sending module is used for sending system information after upgrading to subscriber equipment under the triggering of judge module, and it is invalid in transmitting system information, the system information of the current employing of this side to be set to, and the system information after upgrading is set to effectively.
6. device as claimed in claim 5, is characterized in that, also comprises:
The Threshold module is used for presetting sending and upgrades the interval duration threshold value of pointing out.
7. device as described in claim 5 or 6, is characterized in that, also comprises:
System information is upgraded trigger module, is used for when default renewal trigger condition satisfies, and starts system information and upgrades.
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| CN 200910000661 CN101778342B (en) | 2009-01-13 | 2009-01-13 | Method and device for updating system information in wireless communication system |
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| CN 200910000661 CN101778342B (en) | 2009-01-13 | 2009-01-13 | Method and device for updating system information in wireless communication system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102149193A (en) * | 2011-05-17 | 2011-08-10 | 新邮通信设备有限公司 | Updating method for system information in LTE (long term evolution) system |
| CN102905245B (en) * | 2011-07-25 | 2018-04-06 | 中兴通讯股份有限公司 | The method and device of information of residential area system in long-term evolution system renewal |
| CN104737470B (en) * | 2012-09-19 | 2017-11-14 | Lg 电子株式会社 | The method and apparatus of reception system information in a wireless communication system |
| WO2014098384A1 (en) * | 2012-12-17 | 2014-06-26 | 엘지전자 주식회사 | Method and terminal for applying changed system information |
| CN103147507B (en) * | 2013-03-17 | 2015-03-25 | 韩子辉 | Nodular cast iron and steel fiber well grate |
| WO2015032021A1 (en) * | 2013-09-03 | 2015-03-12 | 华为技术有限公司 | Method for updating system message and network device |
| CN105430679A (en) * | 2014-09-19 | 2016-03-23 | 中兴通讯股份有限公司 | System message updating method and system |
| CN111510954B (en) * | 2016-02-05 | 2021-12-31 | 中兴通讯股份有限公司 | Method and device for determining scheduling timing interval |
| CN107580299B (en) * | 2016-07-05 | 2022-04-29 | 中兴通讯股份有限公司 | System information updating method and device |
| CN111262680A (en) | 2017-05-04 | 2020-06-09 | 维沃移动通信有限公司 | System information transmission method, terminal and network side equipment |
| CN107229799A (en) * | 2017-06-05 | 2017-10-03 | 合肥佳洋电子科技有限公司 | A kind of wiring method of high-speed rod |
| CN109587673B (en) | 2017-09-28 | 2021-06-15 | 中兴通讯股份有限公司 | Information transmission method and device |
| CN109936871A (en) * | 2017-12-19 | 2019-06-25 | 华为技术有限公司 | System message method of reseptance and terminal device |
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Application publication date: 20100714 Assignee: SHENZHEN ZTE MICROELECTRONICS TECHNOLOGY CO., LTD. Assignor: ZTE Corporation Contract record no.: 2015440020319 Denomination of invention: Method and device for updating system information in wireless communication system Granted publication date: 20130508 License type: Common License Record date: 20151123 |
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