CN102149094B - A kind of method and system of carrier management - Google Patents
A kind of method and system of carrier management Download PDFInfo
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- CN102149094B CN102149094B CN201010114188.4A CN201010114188A CN102149094B CN 102149094 B CN102149094 B CN 102149094B CN 201010114188 A CN201010114188 A CN 201010114188A CN 102149094 B CN102149094 B CN 102149094B
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Abstract
The invention provides a kind of method of carrier management, base station is the measurement task of user device configuration carrier management according to the signal quality of carrier aggregation Serving cell, wherein, described carrier aggregation Serving cell comprises in the carrier aggregation subdistrict that there are wireless connections with subscriber equipment all component carriers supporting to be polymerized.Present invention also offers a kind of system of carrier management.
Description
Technical field
The present invention relates to technical field of digital mobile communication, relate generally to a kind of method and system of carrier management.
Background technology
For providing higher data rate to mobile subscriber, advanced long-term evolution system (LongTermEvolutionAdvance, be called for short LTE-A) propose carrier aggregation technology (Carrieraggregation, be called for short CA), its objective is the subscriber equipment (UserEquipment for having respective capabilities, be called for short UE) larger broadband is provided, improve the peak rate of UE.In LTE, the maximum downstream transmission bandwidth of system support is 20MHz, carrier aggregation the component carrier of two or more (componentcarriers is called for short CC) is aggregating support be greater than 20MHz, the maximum downstream transmission bandwidth being no more than 100MHz.Above-mentioned two or more component carrier aggregation Cheng Yige community, is called carrier aggregation subdistrict.The component carrier of multiple carrier aggregation subdistricts polymerization has common factor, as shown in Figure 1, the component carrier that carrier aggregation subdistrict 1 is polymerized is CC1 and CC2, the component carrier that carrier aggregation subdistrict 2 is polymerized is CC2 and CC3, the CC2 of carrier aggregation subdistrict 1 can be called the community 1 on CC2, the CC2 of carrier aggregation subdistrict 2 is called the community 2 on CC2.Above-mentioned community 1 and community 2 are identical with the community in LTE.
Component carrier can use the defined frequency range of LTE, also can use the frequency range for LTE-A increases newly specially.Nervous based on current frequency spectrum resource, continuous print component carrier on frequency domain always can not be had can to distribute to operator and use, therefore whether carrier aggregation is continuous on frequency domain by each component carrier, can divide continuous print carrier aggregation and discrete carrier aggregation.Carrier aggregation by each component carrier whether in identical frequency band, the carrier aggregation of single band (singleband) and the carrier aggregation across frequency band (multiplefrequencybands) can be divided into, so-called single carrier aggregation refers to that all component carriers participating in carrier aggregation are all in same frequency band, and single carrier aggregation can be continuous print carrier aggregation also can be discrete carrier aggregation; The so-called carrier aggregation across frequency band refers to that the component carrier participating in carrier aggregation can be derived from different frequency bands.LTEUE can only on the component carrier of a compatible LTE transceiving data, there is the LTE-AUE of carrier aggregation capacity (for convenience, UE is hereinafter this type of UE, unless otherwise indicated), and can simultaneously transceiving data on multiple component carrier.
In carrier aggregation technology, according to the factor such as ability and business demand of UE self, network side can use one or more component carrier resource in carrier aggregation subdistrict by signal deployment to UE, these component carriers are called the component carrier of configuration, and in this carrier aggregation subdistrict, other component carriers are called the component carrier do not configured.The component carrier of configuration and the conversion of component carrier do not configured can be deleted by the carrier wave of carrier management, increase, replacement etc. operates carries out.These operations of carrier management are the objects according to determining to need operation and the operation carried out to the measurement result of these component carriers.
In LTE system, measurement event in LTE system is defined as follows: event A1 (signal quality of Serving cell is higher than appointed threshold), event A2 (signal quality of Serving cell is lower than appointed threshold), event A3 (a signal quality skew of specifying higher than the signal quality of Serving cell of abutting subdistrict), event A4 (signal quality of abutting subdistrict is higher than appointed threshold), event A5 (, lower than appointed threshold 1, the signal quality of abutting subdistrict is higher than appointed threshold 2 for the signal quality of Serving cell).For event A1 and A2, be the measurement for Serving cell, UE receives the measurement task of these two events, only measures Serving cell and assesses.For event A3/A4/A5, be the measurement for abutting subdistrict, UE receives the measurement task of these three events, needs measure communities all in certain frequency and assess.
In carrier aggregation technology, because multiple component carrier is supported in carrier aggregation subdistrict, a kind of method of carrying out carrier management is: for network configuration to the component carrier of UE, employing event A2 carries out carrier management, detect these carrier waves and whether do not meet the condition of carrying out being polymerized, do not configure to the component carrier of UE for network, adopt event A3/A4/A5 to carry out carrier management, detect these carrier waves and whether meet the condition of carrying out being polymerized.
The weak point of this process is, when the carrier set configured changes, (carrier wave such as configured is deleted becomes the carrier wave do not configured, or the carrier wave do not configured is increased the carrier wave becoming configuration) time, the configuration of measurement of correlation event needs to do corresponding adjustment by RRC signaling.Such as, if the carrier wave that carrier aggregation Serving cell can carry out being polymerized is CC1, CC2, CC3, current network side is only configured with CC1 to UE, so for CC1, just adopts the measurement task of event A2, for CC2 and CC3, the measurement task of employing event A4, when network side determines CC2 to configure to UE, needs the measurement task of the event A4 deleting CC2, add the measurement task of the event A2 of CC2, cause the waste of space interface signaling.In addition, the behavior of measurement task to UE of event A1/A2 and event A3/A4/A5 has obvious difference.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of method and system of carrier management, saves space interface signaling.
In order to solve the problem, the invention provides a kind of method of carrier management, base station is the measurement task of user device configuration carrier management according to the signal quality of carrier aggregation Serving cell, wherein, described carrier aggregation Serving cell comprises in the carrier aggregation subdistrict that there are wireless connections with subscriber equipment all component carriers supporting to be polymerized.
Further, said method also can have following characteristics, supports that the component carrier be polymerized is the component carrier configured or the component carrier do not configured in described carrier aggregation subdistrict.
Further, said method also can have following characteristics, and into do not configure component carrier is changed the component carrier configured in described carrier aggregation Serving cell by radio resource control signaling in described base station.
Further, said method also can have following characteristics, and the component carrier do not configured in described carrier aggregation Serving cell is changed into the component carrier of configuration by described base station by radio resource control signaling.
Further, said method also can have following characteristics, and described radio resource control signaling is the order of wireless heterogeneous networks reprovision or newly-increased wireless heterogeneous networks order.
The present invention also provides a kind of system of carrier management, described system comprises base station, described base station, for according to the signal quality of carrier aggregation Serving cell being the measurement task of user device configuration carrier management, wherein, described carrier aggregation Serving cell comprises in the carrier aggregation subdistrict that there are wireless connections with subscriber equipment all component carriers supporting to be polymerized.
Further, said system also can have following characteristics, supports that the component carrier be polymerized is the component carrier configured or the component carrier do not configured in described carrier aggregation subdistrict.
Further, said system also can have following characteristics, described base station, also for changing the component carrier carrier wave configured in described carrier aggregation Serving cell into do not configure component carrier by radio resource control signaling.
Further, said system also can have following characteristics, described base station, also for the component carrier do not configured in described carrier aggregation Serving cell being changed by radio resource control signaling into the component carrier of configuration.
Further, said system also can have following characteristics, and described radio resource control signaling is the order of wireless heterogeneous networks reprovision or newly-increased wireless heterogeneous networks order.
Adopt the method and system that the present invention proposes, carrier management can be made easy and simple to handle, reduce when carrier wave increases or deletes measuring the increase of task or deletion or amendment, and configuration carrier wave and the measuring management that do not configure carrier wave are agreed, space interface signaling expense can be saved further.
Accompanying drawing explanation
Fig. 1 carrier aggregation small area schematic diagram;
Fig. 2 is the schematic diagram configuring carrier wave in the embodiment of the present invention one carrier aggregation subdistrict;
Fig. 3 is the embodiment of the present invention one carrier management flow chart;
Fig. 4 is the schematic diagram configuring carrier wave in embodiment of the present invention nd carrier aggregation cell;
Fig. 5 is embodiment of the present invention nd carrier management flow chart.
Embodiment
Below the enforcement of technical scheme is described in further detail.In following examples, the component carrier in carrier aggregation subdistrict can be positioned at same frequency band or different frequency bands, and component carrier can be continuous or discontinuous, and the component carrier in carrier aggregation subdistrict can be one also can be multiple.
In order to carrier management is easy and simple to handle, and configuration carrier wave and the measuring management that do not configure carrier wave are reached an agreement, save space interface signaling expense, the component carrier do not configured is included into carrier aggregation service cell set, namely the Serving cell of carrier aggregation comprises the component carrier configured in carrier aggregation subdistrict and the component carrier do not configured, in other words, the Serving cell of carrier aggregation comprises in carrier aggregation subdistrict all component carriers supporting to be polymerized.
The invention provides a kind of method of carrier management, comprise: base station is the measurement task of user device configuration carrier management according to the signal quality of carrier aggregation Serving cell, wherein, described carrier aggregation Serving cell comprises in the carrier aggregation subdistrict that there are wireless connections with subscriber equipment all component carriers supporting to be polymerized.
Wherein, the component carrier in carrier aggregation subdistrict is the component carrier of configuration, or the component carrier do not configured.
Wherein, the component carrier do not configured in carrier aggregation Serving cell can configure to UE by RRC signaling by base station, is transformed into the component carrier of configuration.
Wherein, the component carrier configured in carrier aggregation Serving cell can be deleted by RRC signaling by base station, is transformed into the component carrier do not configured.
Wherein, described RRC signaling is the order of RRC reprovision, or, newly-increased RRC order.
Embodiment one
As shown in Figure 2,3, UE resides in carrier aggregation subdistrict 1, this carrier aggregation subdistrict 1 i.e. Serving cell of carrier aggregation, supports the polymerization of three component carriers, CC1, CC2 and CC3.Carrier aggregation Serving cell comprises CC1, CC2 and CC3.
After UE initiation business, network side is configured with CC1, CC2 to UE as required, and namely active user's terminal employs two component carriers simultaneously, CC1 and CC2.CC1 and CC2 is the component carrier of configuration, and CC3 is the component carrier do not configured.
Task is measured by measuring configuration (being included in RRC connection to reshuffle in signaling) as follows for user terminal configures in base station:
Measurement task 1: carrier aggregation Serving cell signal strength signal intensity is on the component carrier CC lower than appointed threshold (the A2 event on CC1);
Measurement task 2: the signal strength signal intensity of carrier aggregation Serving cell on component carrier CC2 is lower than appointed threshold (the A2 event on CC2);
Measurement task 3: the signal strength signal intensity of carrier aggregation Serving cell on component carrier CC3 is lower than appointed threshold (the A2 event on CC3);
Measurement task 4: carrier aggregation Serving cell signal strength signal intensity is on the component carrier CC higher than appointed threshold (the A1 event on CC1);
Measurement task 5: the signal strength signal intensity of carrier aggregation Serving cell on component carrier CC2 is higher than appointed threshold (the A1 event on CC2);
Measurement task 6: the signal strength signal intensity of carrier aggregation Serving cell on component carrier CC3 is higher than appointed threshold (the A1 event on CC3).
In addition, base station also can configure other measurement tasks for user terminal, the measurement task dispatching of the upper event A3 of such as CC1, CC2, CC3.
Sometime, the measurement report of UE reporting measurement task 6 and measurement task 2, on component carrier CC2, the signal strength signal intensity of community 1 is lower than appointed threshold, on component carrier CC3, the signal strength signal intensity of community 1 is higher than appointed threshold, base station issues the order of RRC reprovision to UE, deletes component carrier CC2, increases component carrier CC3, in other words, component carrier CC2 is replaced with component carrier CC3.Herein also can by newly-increased RRC order notice UE.CC2 becomes the component carrier do not configured, and CC3 becomes the component carrier of configuration.
Sometime, the measurement report of UE reporting measurement task 5, on component carrier CC2, the signal strength signal intensity of community 1 is higher than appointed threshold, and because service traffics increase, base station issues the order of RRC reprovision to UE, increases CC2.Herein also can by newly-increased RRC order notice UE.CC2 becomes the component carrier of configuration.
In above-mentioned whole process, above-mentioned measurement task does not need to make any adjustments, and the measurement task of CC1, CC2, CC3 is all event A1, A2, and measuring management process is completely the same.
Embodiment two
As shown in Figure 4,5, UE resides in carrier aggregation subdistrict 1, this carrier aggregation subdistrict 1 i.e. Serving cell of carrier aggregation, supports the polymerization of three component carriers, CC1, CC2, CC3.Carrier aggregation Serving cell comprises CC1, CC2, CC3.
After UE initiation business, network side is configured with CC1, CC2 to UE as required, and namely active user's terminal employs two component carriers simultaneously, CC1, CC2.CC1 and CC2 is the component carrier of configuration, and CC3 is the component carrier do not configured.
Task is measured by measuring configuration (being included in RRC connection to reshuffle in signaling) as follows for user terminal configures in base station:
Measurement task 1: carrier aggregation Serving cell signal strength signal intensity is on the component carrier CC lower than appointed threshold (the A2 event on CC1);
Measurement task 2: the signal strength signal intensity of carrier aggregation Serving cell on component carrier CC2 is lower than appointed threshold (the A2 event on CC2);
Measurement task 3: the signal strength signal intensity of carrier aggregation Serving cell on component carrier CC3 is lower than appointed threshold (the A2 event on CC3);
Measurement task 4: carrier aggregation Serving cell signal strength signal intensity is on the component carrier CC higher than appointed threshold (the A1 event on CC1);
Measurement task 5: the signal strength signal intensity of carrier aggregation Serving cell on component carrier CC2 is higher than appointed threshold (the A1 event on CC2);
Measurement task 6: the signal strength signal intensity of carrier aggregation Serving cell on component carrier CC3 is higher than appointed threshold (the A1 event on CC3);
Measurement task 7: carrier aggregation abutting subdistrict signal strength signal intensity on the component carrier CC specifies Offsets (the A3 event on CC1) higher than one, carrier aggregation Serving cell, wherein when have the community on CC1 meet again after the entry condition meeting event A3 event A3 leave condition time, also need reporting measurement reports;
Measurement task 8: the signal strength signal intensity of carrier aggregation abutting subdistrict on component carrier CC2 specifies Offsets (the A3 event on CC2) higher than one, carrier aggregation Serving cell, wherein when have the community on CC2 meet again after the entry condition meeting event A3 event A3 leave condition time, also need reporting measurement reports;
Measurement task 9: the signal strength signal intensity of carrier aggregation abutting subdistrict on component carrier CC3 specifies Offsets (the A3 event on CC3) higher than one, carrier aggregation Serving cell, wherein when have the community on CC3 meet again after the entry condition meeting event A3 event A3 leave condition time, also need reporting measurement reports.
In addition, base station also can configure other measurement tasks for user terminal.
Sometime, the measurement report of UE reporting measurement task 6, the signal strength signal intensity of the upper community 1 of CC3 is higher than appointed threshold, and base station thinks current does not have increase in demand CC3, does not therefore process.
Sometime, the measurement report of UE reporting measurement task 8, it is the measurement report due to community 2 triggering on CC2, base station finds that on CC2, community 1 exists the strong jamming from community on CC2 2, UE does not have the measurement report of reporting measurement task 3 simultaneously, and illustrate that the signal strength signal intensity of community 1 on CC3 is still higher than appointed threshold, base station issues the order of RRC reprovision to UE, delete CC2, increase CC3.CC2 becomes the component carrier do not configured, and CC3 becomes the component carrier of configuration.
Sometime, the measurement report of UE reporting measurement task 9, be the measurement report due to community 3 triggering on CC3, base station finds that the community 1 on CC3 exists the strong jamming from community on CC3 3, and base station issues the order of RRC reprovision to UE, deletes CC3.CC3 becomes the component carrier do not configured.
In above-mentioned whole process, above-mentioned measurement task does not need to make any adjustments, and the measurement task of CC1, CC2, CC3 is all event A1, A2, A3, and measuring management process is completely the same.
Embodiment three
UE resides in carrier aggregation subdistrict 1, this carrier aggregation subdistrict 1 i.e. Serving cell of carrier aggregation, supports the polymerization of three component carriers, CC1, CC2, CC3.Carrier aggregation Serving cell comprises CC1, CC2, CC3.
After UE initiation business, network side is configured with CC1, CC2, CC3 to UE, and namely active user's terminal employs three component carriers simultaneously, CC1, CC2, CC3.CC1, CC2, CC3 are the component carriers of configuration.
Task is measured by measuring configuration (being included in RRC connection to reshuffle in signaling) as follows for user terminal configures in base station:
Measurement task 1: carrier aggregation Serving cell signal strength signal intensity is on the component carrier CC lower than appointed threshold (the A2 event on CC1);
Measurement task 2: the signal strength signal intensity of carrier aggregation Serving cell on component carrier CC2 is lower than appointed threshold (the A2 event on CC2);
Measurement task 3: the signal strength signal intensity of carrier aggregation Serving cell on component carrier CC3 is lower than appointed threshold (the A2 event on CC3);
Measurement task 4: carrier aggregation Serving cell signal strength signal intensity is on the component carrier CC higher than appointed threshold (the A1 event on CC1);
Measurement task 5: the signal strength signal intensity of carrier aggregation Serving cell on component carrier CC2 is higher than appointed threshold (the A1 event on CC2);
Measurement task 6: the signal strength signal intensity of carrier aggregation Serving cell on component carrier CC3 is higher than appointed threshold (the A1 event on CC3);
Measurement task 7: carrier aggregation abutting subdistrict signal strength signal intensity on the component carrier CC specifies Offsets (the A3 event on CC1) higher than one, carrier aggregation Serving cell, wherein when have the community on CC1 meet again after the entry condition meeting event A3 event A3 leave condition time, also need reporting measurement reports;
Measurement task 8: the signal strength signal intensity of carrier aggregation abutting subdistrict on component carrier CC2 specifies Offsets (the A3 event on CC2) higher than one, carrier aggregation Serving cell, wherein when have the community on CC2 meet again after the entry condition meeting event A3 event A3 leave condition time, also need reporting measurement reports;
Measurement task 9: the signal strength signal intensity of carrier aggregation abutting subdistrict on component carrier CC3 specifies Offsets (the A3 event on CC3) higher than one, carrier aggregation Serving cell, wherein when have the community on CC3 meet again after the entry condition meeting event A3 event A3 leave condition time, also need reporting measurement reports.
In addition, base station also can configure other measurement tasks for user terminal.
Sometime, the measurement report of UE reporting measurement task 2, measurement task 3, base station finds that the signal quality of CC2, CC3 is bad, issues the order of RRC reprovision to UE, deletes CC2, CC3.CC2, CC3 become the component carrier do not configured.
Sometime, the measurement report of UE reporting measurement task 9, be the measurement report due to community 3 triggering on CC3, base station finds that the community 1 on CC3 exists the strong jamming from community on CC3 3.
Sometime, the measurement report of UE reporting measurement task 6, base station finds that the signal quality of CC3 has improved.
Sometime, the measurement report of UE reporting measurement task 5, base station finds that the signal quality of CC2 has improved.
Sometime, because service traffics increase, CC2 and CC3 is compared in base station, issues the order of RRC reprovision to UE, increases CC2, because the interference of CC2 is smaller.CC2 becomes the component carrier of configuration.
In above-mentioned whole process, above-mentioned measurement task does not need to make any adjustments, and the measurement task of CC1, CC2, CC3 is all event A1, A2, A3, and measuring management process is completely the same.
The present invention also provides a kind of system of carrier management, described system comprises base station, described base station, for according to the signal quality of carrier aggregation Serving cell being the measurement task of user device configuration carrier management, wherein, described carrier aggregation Serving cell comprises in the carrier aggregation subdistrict that there are wireless connections with subscriber equipment all component carriers supporting to be polymerized.
Wherein, support in described carrier aggregation subdistrict that the component carrier be polymerized is the component carrier configured or the component carrier do not configured.
Wherein, described base station, also for changing the component carrier carrier wave configured in described carrier aggregation Serving cell into do not configure component carrier by radio resource control signaling.
Wherein, described base station, also for the component carrier do not configured in described carrier aggregation Serving cell being changed by radio resource control signaling into the component carrier of configuration.
Wherein, described radio resource control signaling is the order of wireless heterogeneous networks reprovision or newly-increased wireless heterogeneous networks order.
Claims (8)
1. the method for a carrier management, it is characterized in that, base station is the measurement task of user device configuration carrier management according to the signal quality of carrier aggregation Serving cell, wherein, described carrier aggregation Serving cell comprises in the carrier aggregation subdistrict that there are wireless connections with subscriber equipment all component carriers supporting to be polymerized, and the measurement task of all component carriers is identical, the component carrier supported the component carrier that all component carriers be polymerized comprise configuration in described carrier aggregation subdistrict and do not configure.
2. the method for claim 1, is characterized in that, into do not configure component carrier is changed the component carrier configured in described carrier aggregation Serving cell by radio resource control signaling in described base station.
3. the method for claim 1, is characterized in that, the component carrier do not configured in described carrier aggregation Serving cell is changed into the component carrier of configuration by described base station by radio resource control signaling.
4. method as claimed in claim 2 or claim 3, it is characterized in that, described radio resource control signaling is the order of wireless heterogeneous networks reprovision or newly-increased wireless heterogeneous networks order.
5. the system of a carrier management, it is characterized in that, described system comprises base station, described base station, for according to the signal quality of carrier aggregation Serving cell being the measurement task of user device configuration carrier management, wherein, described carrier aggregation Serving cell comprises in the carrier aggregation subdistrict that there are wireless connections with subscriber equipment all component carriers supporting to be polymerized, and the measurement task of all component carriers is identical, the component carrier supported the component carrier that all component carriers be polymerized comprise configuration in described carrier aggregation subdistrict and do not configure.
6. system as claimed in claim 5, is characterized in that, described base station, also for changing the component carrier configured in described carrier aggregation Serving cell into do not configure component carrier by radio resource control signaling.
7. system as claimed in claim 5, be is characterized in that, described base station, also for the component carrier do not configured in described carrier aggregation Serving cell being changed by radio resource control signaling into the component carrier of configuration.
8. system as claimed in claims 6 or 7, it is characterized in that, described radio resource control signaling is the order of wireless heterogeneous networks reprovision or newly-increased wireless heterogeneous networks order.
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| CN201010114188.4A CN102149094B (en) | 2010-02-10 | 2010-02-10 | A kind of method and system of carrier management |
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| CN101541029A (en) * | 2009-04-27 | 2009-09-23 | 中兴通讯股份有限公司 | Sending method and device of measure-reference signal under state of carrier aggregation |
| CN101577927A (en) * | 2009-01-15 | 2009-11-11 | 华为技术有限公司 | Load measuring method, evolution base station and load measuring system |
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| CN101577927A (en) * | 2009-01-15 | 2009-11-11 | 华为技术有限公司 | Load measuring method, evolution base station and load measuring system |
| CN101541029A (en) * | 2009-04-27 | 2009-09-23 | 中兴通讯股份有限公司 | Sending method and device of measure-reference signal under state of carrier aggregation |
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