CN101778342A - 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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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 (UserEquipment in the sub-district, subscriber equipment) issues some identical configuration informations, to save Radio Resource, UE obtains to set up wireless connections with system behind enough access informations by the broadcast that receives.
At 3G (Third Generation) Moblie LTE (Long Term Evolution, Long Term Evolution) in the 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 the system among the MIB, is to go up at BCH (Broadcast Channel, broadcast channel) to send.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 among the SI (SystemInformation, system information).Be identical these SIB their dispatching cycles that are mapped to same SI.SIB1 and SI go up at transmission channel DL-SCH (Downlink-Shared Channel, DSCH Downlink Shared Channel) to send.
It is 40ms that MIB has fixing dispatching cycle, is transmitted in first in the #0 subframe of radio frames of SFN (System FrameNumber, System Frame Number) mod 4=0 to send, and repeats in other radio frames in the cycle to send.
It is 80ms that SIB1 has fixing dispatching cycle, is transmitted in first in the #5 subframe of radio frames of SFN mod 8=0 to send, and repeats in the radio frames at the SFN mod 2=0 place in the cycle to send.
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 dispose and be unified for all SI, (except the #5 subframe of MBSFN subframe, even number radio frames) this SI can be repeated to send repeatedly on any one subframe in corresponding SI window, UE can be by monitoring PDCCH (PhysicalDownlink Control Channel, Physical Downlink Control Channel) SI-RNTI on (SystemInformation Radio Network Temporary Identity, system information Radio Network Temporary Identifier) determines the existence of SIB1 and SI.
Regulation in RRC (Radio Resource Control, the Radio Resource control) agreement 36.331, system information is upgraded and is occurred on the particular radio frames.Here introduce modification cycle (Modification Period) this notion.Modification cycle is longer than the transmission cycle of the SI of maximum at least, to guarantee that SI can send one or many in a modification cycle.Figure 1 shows that the send mode schematic diagram that system information is upgraded in the prior art, as seen from the figure, when system need change system information, in the current modification cycle, notify to the information updating of UE transmitting system earlier, then the system information after UE sends renewal 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 the renewal, reads up to all system informations to finish.
The mode of notifying the UE system information to change realizes by paging (Paging) message at present.It is systemInfoModification (system information modification) that beep-page message has a field, receive that at the UE of RRC_IDLE state and RRC_CONNECTED state the systemInfoModification in the beep-page message indicates, just learn that system information changes, need 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 among 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 being preserved is invalid (Invalid) information, and begins to have received new system information.Because system information is MIB or SIB no matter, all is periodic scheduling, can not arrive UE at the very start at once in the cycle.Therefore, it is invalid to be changed in original system information, to receiving that before the new system information, there is a blank phase in UE, promptly without any effective broadcast message.
The trigger condition of initiating system update at network side is as follows:
1) system powers on, and the sub-district is set up successfully;
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 take place 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 taken place, network side can be taked the next system information after UE sends renewal of following dual mode:
1) revises the cycle edge at the next one and begin transmitting system information updating indication, and in the whole modification cycle, continue to send; After this modification cycle finished, the next again modification cycle began to send new system information when arriving;
2) indication of transmitting system information updating at once begins the back in the next one modification cycle and sends new system information.
All there is certain defective in these two kinds of schemes.Method one may cause the time of transmitting system information updating indication late excessively, if the eNodeB side allows new system information come into force once upgrading, then the system information maximum possible with the UE side has two modification cycles asynchronous.If the eNodeB side just comes into force when waiting until the transmitting system information updating, then opportunity of Geng Xining and the opportunity interval of coming into force are long, have influenced the real-time of system; Method two may cause the time point of transmitting system information updating indication too short from the end boundary time interval in current modification cycle, can't guarantee that all UE can receive system information renewal indication in the current modification cycle.
Summary of the invention
The invention provides system information update method and device in a kind of wireless communication system, initiate system information from network side and upgrade the back and receive time difference the new system information to reduce, avoided network side and UE side to upgrade the come into force generation of asynchronous problem on opportunity of back system information to the UE side.
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, the system information after the temporary simultaneously renewal;
B, network side judge whether described interval duration upgrades the interval duration threshold value of pointing out more than or equal to default transmission, if, then point out to the information updating of subscriber equipment transmitting system at current time, otherwise, when arriving, points out in next modification cycle to the information updating of subscriber equipment transmitting system;
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 changed to, and the system information after upgrading is changed to effectively.
It is invalid that described subscriber equipment is changed to the system message of current employing when the next one modification cycle after system information is upgraded indication of receiving arrives, and after receiving updated system messages, this system message is changed to effectively.
Further, comprise also before the described steps A that network side preestablishes the step that sends the interval duration threshold value of upgrading prompting.
In the described steps A, when default renewal trigger condition satisfies, the start-up system information updating.
The present invention also provides the updating device of the system information in a kind of wireless communication system, comprising:
The duration determination module is used for determining the interval duration between the current time and the end boundary in current modification cycle when the system information renewal is activated at interval, and the system information after temporary the renewal;
Judge module, be used to judge whether described interval duration upgrades the interval duration threshold value of pointing out more than or equal to default transmission, if, then 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 when next modification cycle arrives, to point out to the information updating of subscriber equipment transmitting system; And the next one after upgrading prompting sending module transmitting system information updating prompting is revised the system information of cycle triggering system information sending module after the subscriber equipment transmission is upgraded;
Upgrade the prompting sending module, be used under the triggering of judge module, pointing out to the information updating of subscriber equipment transmitting system;
The system information sending module is used in the system information after subscriber equipment send to upgrade under the triggering at judge module, and it is invalid in transmitting system information the system information of the current employing of this side to be changed to, and the system information after upgrading is changed to effectively.
Further, described device also comprises:
The threshold setting module is used to preestablish send 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 the start-up system information updating.
Technical scheme of the present invention is by judging whether current time satisfies the interval duration threshold value that prompting is upgraded in a predefined transmission from the time interval of the end boundary in current modification cycle, if satisfy, just indicate in the information updating of current time transmitting system, if do not satisfy, upgrade Indication message just begin the back transmitting system in the next one modification cycle.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 the fairness that DRX (Discontinuous Reception, discontinuous reception) state UE receives.And, technical scheme of the present invention allows network side keep two cover configurations simultaneously, when sending new system information, new configuration just comes into force at network side, make that the inconsistent time of the current system information of UE side and network side is 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 system information is upgraded in the prior art;
Fig. 2 upgrades the schematic diagram in the contingent moment for system information;
Fig. 3 is the flow chart of the system information update method in the wireless communication system of the present invention;
The mode schematic diagram of Fig. 4 transmitting system information updating during for T among the present invention 〉=Modification Threshold;
The mode schematic diagram of Fig. 5 transmitting system information updating during for T among the present invention＜Modification Threshold;
Fig. 6 is the structured flowchart of the system information updating device in the wireless communication system of the present invention.
Embodiment
Major technique design of the present invention is by judging whether current time satisfies the interval duration threshold value that prompting is upgraded in a predefined transmission from the time interval of the end boundary in current modification cycle, if satisfy, just indicate in the information updating of current time transmitting system, if do not satisfy, upgrade Indication message just begin the back transmitting system in the next one modification cycle.When network side sent new system information, the system information of network side just came into force.The time that can guarantee network side and UE side system information inconsistency like this is the shortest, guarantee that simultaneously the UE side can receive in the same modification cycle of network side transmitting system information updating indication 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 the wireless communication system of the present invention, mainly may further comprise the steps:
Step 11, when default system information is upgraded trigger condition and is satisfied, the start-up system information updating;
Step 15, network side when next modification cycle arrives to UE transmitting system information updating prompting, see also Fig. 5, the mode schematic diagram of transmitting system information updating when the figure illustrates T among the present invention＜Modification Threshold;
It is invalid that UE is changed to the system message of current employing when the next one modification cycle after system information is upgraded indication of receiving arrives, and after receiving updated system messages, this system message is changed 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 the wireless communication system of the present invention, it comprises that mainly threshold setting module, system information are upgraded trigger module, sending module and system information sending module are pointed out in duration determination module, judge module, renewal at interval, wherein
The threshold setting module is used to set to send 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 the start-up system information updating.
The duration determination module is used for determining the interval duration between the current time and the end boundary in current modification cycle when the system information renewal is activated at interval, and the system information after temporary the renewal;
Judge module, be used to judge the interval duration threshold value whether described interval duration points out more than or equal to default sent renewals, if, then 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 when next modification cycle arrives, to point out to the information updating of subscriber equipment transmitting system; And the next one after upgrading prompting sending module transmitting system information updating prompting is revised the system information of cycle triggering system information sending module after the subscriber equipment transmission is upgraded;
Upgrade the prompting sending module, be used under the triggering of judge module, pointing out to the information updating of subscriber equipment transmitting system;
The system information sending module is used in the system information after subscriber equipment send to upgrade under the triggering at judge module, and it is invalid in transmitting system information the system information of the current employing of this side to be changed to, and the system information after upgrading is changed to effectively.
As fully visible, through sending the setting of upgrading prompting time threshold value Modification Threshold, network side transmitting system information updating prompting in 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 in this modification cycle, wait for that then next cycle sends again, the system information with network side in transmitting system information updating prompting is changed to effectively.Thereby guaranteed effectively between UE and the network side that nonsynchronous time of system information is the shortest.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (7)
1. the system information update method in the 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, the system information after the temporary simultaneously renewal;
B, network side judge that whether described interval duration is more than or equal to default interval duration threshold value, if, then point out to the information updating of subscriber equipment transmitting system at current time, otherwise, when arriving, points out in next modification cycle to the information updating of subscriber equipment transmitting system;
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 changed to, and the system information after upgrading is changed to effectively.
2. the method for claim 1, it is characterized in that, it is invalid that described subscriber equipment is changed to the system message of current employing when the next one modification cycle after system information is upgraded indication of receiving arrives, and after receiving updated system messages, this system message is changed to effectively.
3. the method for claim 1 is characterized in that, comprises also before the described steps A that network side preestablishes the step that sends the interval duration threshold value of upgrading prompting.
4. as claim 1 or 3 described methods, it is characterized in that, in the described steps A, when default renewal trigger condition satisfies, the start-up system information updating.
5. the system information updating device in the wireless communication system is characterized in that, comprising:
The duration determination module is used for determining the interval duration between the current time and the end boundary in current modification cycle when the system information renewal is activated at interval, and the system information after temporary the renewal;
Judge module, be used to judge whether described interval duration upgrades the interval duration threshold value of pointing out more than or equal to default transmission, if, then 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 when next modification cycle arrives, to point out to the information updating of subscriber equipment transmitting system; And the next one after upgrading prompting sending module transmitting system information updating prompting is revised the system information of cycle triggering system information sending module after the subscriber equipment transmission is upgraded;
Upgrade the prompting sending module, be used under the triggering of judge module, pointing out to the information updating of subscriber equipment transmitting system;
The system information sending module is used in the system information after subscriber equipment send to upgrade under the triggering at judge module, and it is invalid in transmitting system information the system information of the current employing of this side to be changed to, and the system information after upgrading is changed to effectively.
6. device as claimed in claim 5 is characterized in that, also comprises:
The threshold setting module is used to preestablish send and upgrades the interval duration threshold value of pointing out.
7. as claim 5 or 6 described devices, it is characterized in that, also comprise:
System information is upgraded trigger module, is used for when default renewal trigger condition satisfies the start-up system information updating.
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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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| 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 |
| CN102905245A (en) * | 2011-07-25 | 2013-01-30 | 中兴通讯股份有限公司 | Method and device for updating information of residential area system in long-term evolution system |
| CN103147507A (en) * | 2013-03-17 | 2013-06-12 | 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 |
| CN104737470A (en) * | 2012-09-19 | 2015-06-24 | Lg电子株式会社 | Method and apparatus for receiving system information in wireless communication system |
| CN104871446A (en) * | 2012-12-17 | 2015-08-26 | Lg电子株式会社 | Method and terminal for applying changed system information |
| CN105430679A (en) * | 2014-09-19 | 2016-03-23 | 中兴通讯股份有限公司 | System message updating method and system |
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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 |
| CN102905245A (en) * | 2011-07-25 | 2013-01-30 | 中兴通讯股份有限公司 | Method and device for updating information of residential area system in long-term evolution system |
| WO2013013446A1 (en) * | 2011-07-25 | 2013-01-31 | 中兴通讯股份有限公司 | Method and device for updating cell system information in 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 |
| US10075903B2 (en) | 2012-09-19 | 2018-09-11 | Lg Electronics Inc. | Method and apparatus for receiving system information in wireless communication system |
| CN104737470A (en) * | 2012-09-19 | 2015-06-24 | Lg电子株式会社 | Method and apparatus for receiving system information in wireless communication system |
| CN104871446A (en) * | 2012-12-17 | 2015-08-26 | Lg电子株式会社 | Method and terminal for applying changed system information |
| CN104871446B (en) * | 2012-12-17 | 2018-05-08 | Lg 电子株式会社 | The method and terminal for the system information being changed for application |
| CN103147507A (en) * | 2013-03-17 | 2013-06-12 | 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 |
| WO2016041355A1 (en) * | 2014-09-19 | 2016-03-24 | 中兴通讯股份有限公司 | System message updating method and system |
| CN105430679A (en) * | 2014-09-19 | 2016-03-23 | 中兴通讯股份有限公司 | System message updating method and system |
| CN111510954A (en) * | 2016-02-05 | 2020-08-07 | 中兴通讯股份有限公司 | Method and device for determining scheduling timing interval |
| CN107580299A (en) * | 2016-07-05 | 2018-01-12 | 中兴通讯股份有限公司 | System information update method and device |
| CN108809491A (en) * | 2017-05-04 | 2018-11-13 | 维沃移动通信有限公司 | System information transmission method, terminal and network side equipment |
| CN108809491B (en) * | 2017-05-04 | 2020-02-18 | 维沃移动通信有限公司 | System information transmission method, terminal and network side equipment |
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| 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 |
| WO2019062565A1 (en) * | 2017-09-28 | 2019-04-04 | 中兴通讯股份有限公司 | Information transmission method and device, and storage medium |
| CN109587673A (en) * | 2017-09-28 | 2019-04-05 | 中兴通讯股份有限公司 | Information transferring method and device |
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| WO2019120176A1 (en) * | 2017-12-19 | 2019-06-27 | 华为技术有限公司 | Method for receiving system information 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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