CN101873669B - System information notification method, system and device - Google Patents
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02D30/00—Reducing energy consumption in communication networks
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Abstract
The invention discloses a system information notification method, a system and a device. The method comprises the following steps: UE receiving system information broadcasted by a base station, wherein the system information at least comprises two system information change marks, i.e. a first system information change mark and a second system information change mark, the first system information change mark is used for indicating system information change situation in a first system and the second system information change mark is used for indicating newly introduced system information change situation in a second system; and the UE updating the system information according to the capacity of the UE and the first system information change mark and/or the second system information change mark. Through extending the system information change marks, the LTE UE (the UE of the first system) and the LTE-A UE (the UE of the second system) are ensured to correctly judge whether the system information is required to be re-read or not and thereby the power consumption of the UE can be reduced.
Description
Technical field
The present invention relates to communication technical field, particularly a kind of system information notification method, system and device.
Background technology
In the Long Term Evolution wide-band mobile communication system; For example LTE-Advanced or IMT-Advanced system; Introduced a series of enhancement techniques, as via node (RN, RelayNode), multi-point cooperative transmission (COMP; Coordinated Multiple Point transmission andreception) and carrier aggregation (CA, Carrier Aggregation) etc.The information that therefore in the system information of evolution systems such as LTE-A, also should comprise these enhancement techniques of introducing; Yet the system information content of LTE (Long Term Evolution) system is not enough to support these new features of evolution systems such as LTE-A at present; For example for the carrier aggregation characteristic among the LTE-A, a plurality of carrier waves are formed a LTE-A sub-district.But which carrier wave is the system information of using LTE at present can't indicate belong to same LTE-A sub-district, so just makes UE can't know that whether network supports the characteristic of LTE-A etc., also just can't apply for obtaining the service that LTE-A could support.Therefore UE need know that which carrier wave is arranged in the LTE-A sub-district, and whether these carrier waves can polymerizations, and these carrier bandwidths and band information are so that the application proper service.
In the LTE system, the main contents of system information broadcast are mainly as shown in the table:
| Host system message block (MIB) | Major parameter has: downlink bandwidth, the configuration information of PHICH, System Frame Number (SFN) |
| System information block 1 (SIB1) | Main contents have: insert relevant information (PLMN ID, TAC, cell ID or the like), the parameter relevant with cell selecting with the sub-district; Maximum transmission power, band information, the schedule information of system information; The TDD configuration parameter, SI length of window, systemInfoValueTag etc. |
| System information block 2 (SIB2) | Main contents comprise: access barred information, and wireless resource configuration, eventually |
| End timer and some constant information, frequency information, MBSFN subframe configuration information, the information of synchro timer etc. | |
| System information block 3 (SIB3) | Main contents have: the common parameter of district reselecting, the cell reselection parameters of service frequency, the information such as relevant parameter of co-frequency cell gravity treatment. |
| System information block 4 (SIB4) | Main contents have: co-frequency cell tabulation, with blacklist cell list frequently, the Physical Cell Identifier of CSG sub-district with and scope. |
| System information block 5 (SIB5) | Main contents have: the alien frequencies carrier information is tabulated, and comprises the frequency of each carrier wave, reselecting parameters, precedence information, iso-frequency adjacent community information, blacklist etc. |
| System information block 6 (SIB6) | Main contents are the relevant information that is used for the gravity treatment of UTRA system cell, comprising: the relevant information of UTRA system can comprise the tabulation of UTRA FDD carrier information, the tabulation of UTRA TDD carrier information, reselecting parameters or the like. |
| System information block 7 (SIB7) | Main contents are the relevant information that is used for the gravity treatment of GERAN system cell, comprising: GERAN carrier information and reselecting parameters thereof. |
| System information block 8 (SIB8) | Main contents are the relevant information that is used for the cdma2000 district reselecting, comprising: cdma2000 temporal information, search window size and cell reselection parameters. |
| System information block 9 (SIB9) | Only carry the identification information of home node b |
| System information block 10 (SIB10) | Carry the main notice that is used for early warning ETWS.Comprise message identification numbers, sequence number, alarm type, alarm security information etc. |
| System information block 11 (SIB11) | Carry the assistant notification that is used for early warning ETWS.Comprise message identification numbers, sequence number, the segment information of alarm information, fragment number, section, data coding scheme etc. |
Wherein, in SIB 1, carry system information change flag (systemInfo ValueTag), its effect is the variation of indication system information (SI, System Information).When UE comes back to service area, may whether go back effectively through checking the SI that the system information change flag judges that previous maintenance is got off.Except the minority abnormal conditions, UE can think that usually the SI term of validity of oneself preserving can be above 3 hours.When changing, the system information change flag can be along with renewal as some SIB (except the SIB 10).Like this, UE just can confirm through compare the system information change flag and the system information change flag value (value that read last time) of oneself preserving among the SIB 1 from SIB 1 whether system information variation has taken place.If through comparing, UE finds that variation has taken place system information, it is read system information again.Can avoid the frequent read system information of UE through the introducing of system information change flag, thereby reduce the power consumption of UE.
In addition, evolution systems such as LTE-A also need compatible existing LTE system, make the UE of LTE system also can be operated in the evolution system such as LTE-A system., in the LTE-A system, need expand, with the new features of evolution systems such as support LTE-A system the system information in the LTE system for this reason.Carry out the system information expansion and can have following dual mode:
One, in existing SIB, add new IE (information unit), the new IE that introduces is sightless for LTE UE, and is visible for LTE-A UE.
Two, introduce new SIB, as introducing SIB 12, SIB 13 etc., the new SIB that introduces is sightless for LTEUE, and is visible for LTE-A UE.
Therefore; For in the prior art for the expansion of system information, also need expand the system information change flag of LTE, make in the LTE-A system; The system information change flag not only can be indicated the original system change in information except indication LTE system; The IE and/or the new SIB 12 that introduces that can also indicate the LTE-A system in original SIB, to expand, SIB 13 ... Variation, but these UE that change to LTE are sightless.For example, suppose that SIB 12 changes, cause the system information change flag to change.LTE UE just knows that through comparison system information change sign own system information of being preserved is not up-to-date, triggers read system information again.But this moment, all visible system informations of LTE UE all do not change in fact, only are that the SIB 12 of the new LTE-A system that introduces changes, and therefore this system information is read again and there is no need, and causes the waste of UE power consumption.Perhaps, suppose the SIB2 in the LTE system is expanded, introduced new IE.If variation has taken place in the new IE that introduces of SIB2 this moment, cause the system information change flag to change, then LTE UE knows that own system information of being preserved is not up-to-date, thereby triggers read system information again through comparison system information change sign.But this moment, its all visible system informations did not all change for LTE UE, and therefore this time system information is stressed there is no need, and also can cause the waste of UE power consumption.
Summary of the invention
The object of the invention is intended to solve at least one of above-mentioned technological deficiency, particularly solves because whether LTEUE can't distinguish the system information of LTE system change and repeatedly read the defective that system information causes the UE power wastage again.
For achieving the above object; One aspect of the present invention proposes a kind of system information notification method; May further comprise the steps: user equipment (UE) receives the system information of base station broadcast; At least comprise two system information change flag in the said system information; The first system information change flag and the second system information change flag, the wherein said first system information change flag is used for indicating first system's system information situation of change, and the said second system information change flag is used for indicating the new drawing-in system information change situation of second system; Said UE carries out system information according to self-ability and the said first system information change flag and/or the second system information change flag to be upgraded.
The present invention also proposes a kind of system information reporting system; Comprise base station and UE, said base station is used for broadcast system information; At least comprise two system information change flag in the said system information; The first system information change flag and the second system information change flag, the wherein said first system information change flag is used for indicating first system's system information situation of change, and the said second system information change flag is used for indicating the new drawing-in system information change situation of second system; Said UE receives the system information of said base station broadcast, and carries out system information according to self-ability and the said first system information change flag and/or the second system information change flag and upgrade.
The present invention also proposes a kind of base station; Comprise that system information is provided with module and broadcast module; Said system information is provided with module; Be used to be provided with system information, comprise two system information change flag in the said system information at least, the first system information change flag and the second system information change flag; The wherein said first system information change flag is used for indicating first system's system information situation of change, and the said second system information change flag is used for indicating the new drawing-in system information change situation of second system; Said broadcast module is used for the UE broadcast system information in the sub-district.
The present invention also proposes a kind of UE; Comprise receiver module and system information update module; Said receiver module; Be used to receive the system information of base station broadcast, comprise two system information change flag in the said system information at least, the first system information change flag and the second system information change flag; The wherein said first system information change flag is used for indicating first system's system information situation of change, and the said second system information change flag is used for indicating the new drawing-in system information change situation of second system; Said system information update module is used for carrying out system information according to self-ability and the said first system information change flag and/or the second system information change flag and upgrades.
The present invention has guaranteed that through expanding system information change sign LTE UE and LTE-A UE all can correctly judge whether read system information again, thereby can reduce its power consumption.
Aspect that the present invention adds and advantage part in the following description provide, and part will become obviously from the following description, or recognize through practice of the present invention.
Description of drawings
Above-mentioned and/or additional aspect of the present invention and advantage are from obviously with easily understanding becoming the description of embodiment below in conjunction with accompanying drawing, wherein:
Fig. 1 is the flow chart of embodiment of the invention system information notification method;
Fig. 2 is the structure chart of the system information reporting system of the embodiment of the invention.
Embodiment
Describe embodiments of the invention below in detail, the example of said embodiment is shown in the drawings, and wherein identical from start to finish or similar label is represented identical or similar elements or the element with identical or similar functions.Be exemplary through the embodiment that is described with reference to the drawings below, only be used to explain the present invention, and can not be interpreted as limitation of the present invention.
The present invention mainly is to be provided with two system information change flag; The first system information change flag and the second system information change flag; Its respectively with the LTE system in system information situation of change and the LTE-A system the new system information situation of change of introducing corresponding; The system information of said new introducing includes but not limited to the relevant parameter of enhancement techniques in the LTE-A system, the perhaps new other system information of introducing.UE just can carry out system information according to self ability and the first system information change flag and/or the second system information change flag and upgrades like this, if for example UE is LTE UE, then UE carries out the system information renewal when the first system information change flag changes; If UE is LTE-A UE, then UE carries out the system information renewal when the first system information change flag and/or the variation of the second system information change flag.
As shown in Figure 1, the flow chart for embodiment of the invention system information notification method may further comprise the steps:
Step S101; The system information of base station broadcast; At least comprise two system information change flag in this embodiment in the system information; The first system information change flag and the second system information change flag, wherein the first system information change flag is used for indicating LTE system system information situation of change, and the second system information change flag is used for indicating the new drawing-in system information change situation of LTE-A system.As one embodiment of the present of invention; The above-mentioned first system information change flag and the second system information change flag still are arranged in SIB1; Wherein the first system information change flag can be continued to use the system information change flag (system Info Value Tag) in the existing LTE system; But different is its only with the LTE system in the system information situation of change relevant, newly introduce the second system information change flag in this embodiment.More particularly, the possible expansion scheme that the present invention proposes is following, and those skilled in the art can also propose other modifications or variation according to following proposal certainly, and these modifications or variation all should be included in of the present invention comprising within the scope.
In the LTE system, the message format among the SIB1 is following:
SystemInformationBlockType1::＝ SEQUENCE{
cellAccessRelatedInfo SEQUENCE{
plmn-IdentityList PLMN-IdentityList，
trackingAreaCode TrackingAreaCode，
cellIdentity CellIdentity，
cellBarred ENUMERATED{barred，notBarred}，
intraFreqReselection ENUMERATED{allowed，notA?llowed}，
csg-Indication BOOLEAN，
csg-Identity BIT?STRING(SIZE(27))OPTIONAL
}，
cellSelectionInfo SEQUENCE{
q-RxLevMin Q-RxLevMin，
q-RxLevMinOffset INTEGER(1..8) OPTIONAL --Need?OP
}，
p-Max P-Max OPTIONA?L，
--Need?OP
freqBandIndicator INTEGER(1..64)，
schedulingInfo SchedulingInfo，
tdd-Config TDD-Config OPTIONAL，--
Cond?TDD
si-WindowLength ENUMERATED{
ms1，ms2，ms5，ms10，ms15，ms20，
ms40，sparel}，
systemInfoValueTag INTEGER(0..31)，
nonCriticalExtension SEQUENCE{}OPTIONAL --
Need?OP
}
In the LTE-A system, it is following that the message format that increases after the second system information change flag is expanded in the first system information change flag among the SIB 1 indication:
SystemInformationBlockType1::＝ SEQUENCE{
cellAccessRelatedInfo SEQUENCE{
plmn-IdentityList PLMN-IdentityList，
trackingAreaCode TrackingAreaCode，
cellIdentity CellIdentity，
cellBarred ENUMERATED{barred，notBarred}，
intraFreqReselection ENUMERATED{allowed，notAllowed}，
csg-Indication BOOLEAN，
csg-Identity BIT?STRING(SIZE(27))OPTIONAL
}，
cellSelectionInfo SEQUENCE{
q-RxLevMin Q-RxLevMin，
q-RxLevMinOffset INTEGER(1..8) OPTIONAL --Need?OP
}，
p-Max P-Max OPTIONAL，
--Need?OP
freqBandIndicator INTEGER(1..64)，
schedulingInfo SchedulingInfo，
tdd-Config TDD-Config OPTIONAL，--
Cond?TDD
si-WindowLength ENUMERATED{
ms1，ms2，ms5，ms10，ms15，ms20，
ms40，spare1}，
systemInfoValueTag INTEGER(0..31)，
r10NonCriticalExtension SEQUENCE{
systemInfoValueTag-r10ext INTEGER(0..N)，
nonCriticalExtension SEQUENCE{}OPTIONAL --Need?OP
} OPTIONAL --Need?OP
}
Wherein, in one embodiment of the invention, the first system information change flag is used for indicating the situation of change of the SIB relevant with LTE system system information.The second system information change flag is used for indicating the situation of change with the new system information of introducing of LTE-A system, like multicarrier frequency corresponding informance etc.Only need read that part of SIB that changes again for LTE-A UE like this gets final product; If promptly the first system information change flag changes; Then directly read that part of SIB that closes with the first system information change flag Chinese tallow tree and get final product,, then directly read that part of new introducing SIB relevant and get final product with the second system information change flag if the second system information change flag changes; So also can reduce the number of times that LTE-A UE repeats to read effectively, save power consumption.And for LTE UE; It is concerned about the situation of change of the first system information change flag; Only it just understands read system information when the first system information change flag changes, and so also can reduce the number of times that LTE UE repeats to read, and reach purpose of power saving.
Yet in this embodiment; Also possibly include the information unit IE that the LTE-A system newly introduces information among the SIB that system information is relevant in the LTE system; If promptly the LTE-A system is employed in the mode that the new IE of introducing expands among the existing SIB, and if the IE of this new introducing just that changes, then this first system information change flag also can change; And the new IE that introduces is unreadable for LTE UE, thereby causes LTE UE to carry out unnecessary reading again.
Therefore, in another embodiment of the present invention, different with the foregoing description is, the first system information change flag is used for indicating the situation of change of the IE relevant with LTE system system information in this embodiment.The same second system information change flag is used for indicating the situation of change of the system information of newly introducing with the LTE-A system, the promptly new SIB that introduces or the IE of new introducing in original SIB.Like this, the situation of change of the IE that system information is relevant in first system information change flag indication and the LTE system among this embodiment, thus avoid the LTE UE that causes that occurs occurring in the foregoing description to carry out unnecessary situation about reading again.
Equally; In another embodiment of the present invention; The second system information change flag also can indicate with the LTE-A system in the relevant SIB of new drawing-in system information and/or the situation of change of IE, its act on the foregoing description in the first system information change flag coexist mutually that this repeats no more.
Step S102, UE carry out system information according to self-ability and the first system information change flag and/or the second system information change flag to be upgraded.If UE is LTE UE, then UE only carries out the system information renewal when the first system information change flag changes; If UE is LTE-A UE; Then UE carries out the system information renewal when the first system information change flag and/or the variation of the second system information change flag; Only read that part of system information that changes; If promptly the first system information change flag is sent and changed, then UE just reads the relevant system information of the first system information change flag; Change if the second system information change flag is sent, then UE just reads the system information of the relevant new introducing of the second system information change flag; If the both changes, then all read.
Need to prove that it is example that the foregoing description evolves to LTE-A with LTE; But the application should not only limit in the LTE-A system; Be applicable to other too and in evolution process, introduced the communication system of new system information, so these other communication systems adopt method of the present invention also should be included within protection scope of the present invention.For example, to second system, wherein first system is the LTE-A system from first system evolved, and second system is the system of further evolution, and perhaps second system is the LTE system, and first system is a legacy system, or the like analogue.
As shown in Figure 2, be the structure chart of the system information reporting system of the embodiment of the invention, this system comprises base station 100 and UE 200.Base station 100 is used for broadcast system information; Wherein comprise two system information change flag in the system information at least; The first system information change flag and the second system information change flag; Wherein the first system information change flag is used for indicating LTE system system information situation of change, and the second system information change flag is used for indicating the new drawing-in system information change situation of LTE-A system.The system information of UE 200 reception base stations 100 broadcasting, and carry out system information according to self-ability and the first system information change flag and/or the second system information change flag and upgrade.
Wherein, base station 100 comprises that system information is provided with module 110 and broadcast module 120.System information is provided with module 110 and is used to be provided with system information; At least comprise two system information change flag in this system information; The first system information change flag and the second system information change flag; Wherein the first system information change flag is used for indicating LTE system system information situation of change, and the second system information change flag is used for indicating the new drawing-in system information change situation of LTE-A system.Broadcast module 120 is used for the UE broadcast system information in the sub-district.
As one embodiment of the present of invention, the first system information change flag is used for indicating the situation of change of the system information block SIB relevant with LTE system system information.As an alternative embodiment of the invention, the first system information change flag is used for indicating the situation of change of the IE relevant with LTE system system information.
Wherein, UE 200 comprises receiver module 210 and system information update module 220.Receiver module 210 is used to receive the system information of base station 100 broadcasting; At least comprise two system information change flag in the system information; The first system information change flag and the second system information change flag; Wherein the first system information change flag is used for indicating LTE system system information situation of change, and the second system information change flag is used for indicating the new drawing-in system information change situation of LTE-A system.System information update module 220 is used for carrying out system information according to self-ability and the first system information change flag and/or the second system information change flag and upgrades.
As one embodiment of the present of invention, if UE 200 is LTE UE, then system information update module 220 is carried out the system information renewal when the first system information change flag changes; If UE is LTE-A UE; Then system information update module 220 is carried out the system information renewal when the first system information change flag and/or the variation of the second system information change flag; Only read that part of system information that changes; If promptly the first system information change flag is sent and changed, then UE just reads the relevant system information of the first system information change flag; Change if the second system information change flag is sent, then UE just reads the system information of the relevant new introducing of the second system information change flag; If the both changes, then all read.
The present invention has guaranteed that through expanding system information change sign LTE UE and LTE-A UE all can correctly judge whether read system information again, thereby can reduce its power consumption.
Although illustrated and described embodiments of the invention; For those of ordinary skill in the art; Be appreciated that under the situation that does not break away from principle of the present invention and spirit and can carry out multiple variation, modification, replacement and modification that scope of the present invention is accompanying claims and be equal to and limit to these embodiment.
Claims (14)
1. a system information notification method is characterized in that, may further comprise the steps:
User equipment (UE) receives the system information of base station broadcast; At least comprise two system information change flag in the said system information; The first system information change flag and the second system information change flag; The wherein said first system information change flag is used for indicating relevant system information block SIB of first system's system information or the situation of change of IE, and the said second system information change flag is used for indicating the new drawing-in system information change situation of second system;
Said UE carries out system information according to self-ability and the said first system information change flag and/or the second system information change flag to be upgraded.
2. the system of claim 1 information notice method is characterized in that, also includes the information unit IE of second system among the SIB that information is relevant in said first system.
3. the system of claim 1 information notice method is characterized in that, said UE carries out system information according to self-ability and the said first system information change flag and/or the second system information change flag to be upgraded and comprise:
If said UE is the UE of first system, then said UE carries out system information when the said first system information change flag changes upgrades.
4. the system of claim 1 information notice method is characterized in that, the second system information change flag is used for indicating the new drawing-in system information change situation of second system to comprise:
The said second system information change flag is used for indicating and SIB that newly drawing-in system information is relevant of second system and/or the situation of change of IE.
5. like claim 1 or 4 described system information notification methods, it is characterized in that said first system is a Long Term Evolution LTE system, said second system is a Long Term Evolution broadband LTE-A system.
6. a system information reporting system is characterized in that, comprises base station and UE,
Said base station; Be used for broadcast system information; At least comprise two system information change flag in the said system information; The first system information change flag and the second system information change flag, the wherein said first system information change flag are used for indicating relevant system information block SIB of first system's system information or the situation of change of IE, and the said second system information change flag is used for indicating the new drawing-in system information change situation of second system;
Said UE receives the system information of said base station broadcast, and carries out system information according to self-ability and the said first system information change flag and/or the second system information change flag and upgrade.
7. system information reporting system as claimed in claim 6 is characterized in that, said first system is a Long Term Evolution LTE system, and said second system is a Long Term Evolution broadband LTE-A system.
8. a base station is characterized in that, comprises that system information is provided with module and broadcast module,
Said system information is provided with module; Be used to be provided with system information; At least comprise two system information change flag in the said system information; The first system information change flag and the second system information change flag, the wherein said first system information change flag are used for indicating relevant system information block SIB of first system's system information or the situation of change of IE, and the said second system information change flag is used for indicating the new drawing-in system information change situation of second system;
Said broadcast module is used for the UE broadcast system information in the sub-district.
9. base station as claimed in claim 8 is characterized in that, the said second system information change flag is used for indicating and SIB that newly drawing-in system information is relevant of second system and/or the situation of change of IE.
10. like claim 8 or 9 described base stations, it is characterized in that said first system is a Long Term Evolution LTE system, said second system is a Long Term Evolution broadband LTE-A system.
11. a UE is characterized in that, comprises receiver module and system information update module,
Said receiver module; Be used to receive the system information of base station broadcast; At least comprise two system information change flag in the said system information; The first system information change flag and the second system information change flag, the wherein said first system information change flag are used for indicating relevant system information block SIB of first system's system information or the situation of change of IE, and the said second system information change flag is used for indicating the new drawing-in system information change situation of second system;
Said system information update module is used for carrying out system information according to self-ability and the said first system information change flag and/or the second system information change flag and upgrades.
12. UE as claimed in claim 11 is characterized in that, if said UE is the UE of first system, then said system information update module is carried out system information and is upgraded when the said first system information change flag changes.
13. UE as claimed in claim 11 is characterized in that, the said second system information change flag is used for indicating and SIB that newly drawing-in system information is relevant of second system and/or the situation of change of IE.
14., it is characterized in that said first system is a Long Term Evolution LTE system like each described UE of claim 11 to 13, said second system is a Long Term Evolution broadband LTE-A system.
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| CN102685846A (en) * | 2011-03-10 | 2012-09-19 | 中兴通讯股份有限公司 | Method and system for updating system information |
| CN102843729B (en) * | 2011-06-22 | 2017-03-15 | 中兴通讯股份有限公司 | CoMP system information updating method and main serving cell |
| CN102868467B (en) * | 2011-07-08 | 2016-08-03 | 中兴通讯股份有限公司 | ETWS and the method processing ETWS alarm information |
| CN108633000A (en) * | 2012-07-27 | 2018-10-09 | 华为技术有限公司 | System message acquisition method and equipment |
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