CN101998581A - Method and system for activating component carrier - Google Patents
Method and system for activating component carrier Download PDFInfo
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- CN101998581A CN101998581A CN2009101628924A CN200910162892A CN101998581A CN 101998581 A CN101998581 A CN 101998581A CN 2009101628924 A CN2009101628924 A CN 2009101628924A CN 200910162892 A CN200910162892 A CN 200910162892A CN 101998581 A CN101998581 A CN 101998581A
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Abstract
The invention provides method and system for activating a component carrier. The method comprises the steps of: reading system information of UE by the UE according to basic information of a non-resident or unused component carrier obtained from a network side; activating the component carrier used by the UE by the network side, and carrying out resource scheduling on the activated carrier. In the invention, through a broadcast or special signaling, the UE obtains the basic information of a non-resident or non-service component carrier or basic information of the component carrier unused by the UE after switching, and the UE reads the system information of the non-resident or non-service or unused component carrier according to the special signaling, thus the problem that the system information of each component carrier is informed for the UE through the special signaling is avoided, the size of the signaling activated by the carrier is greatly reduced, and the system load is lightened; and for a base station, all component carriers of a terminal in a cell are fully utilized for scheduling.
Description
Technical field
The present invention relates to multicarrier system, refer to especially in a kind of multicarrier system, activate the method and system of component carrier.
Background technology
In Long Term Evolution (LTE, the Long Term Evolution) system, the sub-district has only a up-link carrier and descending carrier.In Long Term Evolution-senior (LTE-A, Long Term Evolution-Advance) stage, on improving/descending transmission rate, on the LTE-A sub-district/descendingly can dispose a plurality of component carriers (CC, Component Carrier).
Suppose a LTE-A sub-district have a plurality of on/downlink component carrier, so, for LTE-A terminal that is in idle condition in the sub-district, in order to simplify the behavior of idle condition terminal, reduce the power consumption of terminal, the idle condition terminal always resides on some component carriers.But, after the LTE-A terminal enters connection status, in order to allow the LTE-A terminal transmit with higher speed, the process that need the component carrier configuration, activates, so that carrier wave is managed, thereby allow the LTE-A terminal can be simultaneously in the enterprising line data scheduling of a plurality of component carriers.So, when the LTE-A terminal when idle condition enters connection status, need go to obtain the system configuration information of other component carrier except resident carrier wave or service carrier wave by certain mode.The system configuration information of these carrier waves comprises Physical Cell Identifier (PCI, Physical Cell ID), frequency, the bandwidth of component carrier, the information such as common radio resources configuration information of component carrier.In the LTE system, these information all are to broadcast in Master Information Block (MIB, Master Information Block)/system information block 1 (SIB 1, SystemInformation Block)/SIB2.But in the LTE-A system, terminal has three kinds of solutions at present in order to obtain the system configuration information of other component carrier except resident carrier wave or service carrier wave.
Scheme one, on the resident component carrier of LTE-A terminal, the system information of the component carrier that broadcast cell is all.Like this, the LTE-A terminal of idle condition just can be obtained the up-to-date system information of all component carriers.After the LTE-A terminal entered connection status from idle condition, directly the system information of other component carrier that just can provide according to resident carrier wave was dispatched on other component carrier.Scheme one defective clearly is, on the resident component carrier of LTE-A terminal, the system message amount is very big, has taken a lot of resources.
Scheme two allows the LTE-A terminal of idle condition read the system message of all component carriers in sub-district, and when existing the component carrier system cell to change, the LTE-A terminal reads the system message on this component carrier immediately.Like this, after the LTE-A terminal entered connection status from idle condition, the LTE-A terminal was the up-to-date system message of each component carrier according to what obtain, dispatches on these component carriers.Scheme two mainly is the ability that has strengthened the idle condition terminal, still, owing to need monitor the beep-page message that the system message of all component carriers is revised at any time, has caused the bigger problem of LTE-A terminal power consumption.
Scheme three after the LTE-A terminal enters connection status from idle condition, is notified the system information of the component carrier of its use of LTE-A terminal by dedicated signaling.These system informations comprise Physical Cell Identifier (PCI, Physical Cell ID), frequency, bandwidth, the common radio resources configuration information of component carrier and the component carrier dedicated radio resources configuration information that the LTE-A terminal is used etc. of component carrier at least.
Fig. 1 is the flow chart of the Activiation method of existing scheme three, and as shown in Figure 1, terminal RRC connection is based upon on the F1/F4, and on F1/F4 UE is carried out scheduling of resource (step 100～step 101); Suppose as required, evolution base station eNodeB passes through activation command, the component carrier F2/F5 that activated terminals uses, in activation command, carry all system informations and the dedicated radio resources configuration information (step 102) of F2/F5, UE returns carrier wave and activates success response afterwards, and on F1/F4 and F2/F5 UE is carried out scheduling of resource (step 103～step 104).Suppose as required, eNodeB passes through activation command, activated terminals uses component carrier F3/F5, deexcitation F2/F5, at this moment, carry all system informations and the dedicated radio resources configuration information (step 105) of F3/F5 in activation command, UE returns carrier wave and activates success response afterwards, and on F1/F4 and F3/F5 UE is carried out scheduling of resource (step 106～step 107).Suppose afterwards more as required, eNodeB passes through activation command, activated terminals uses component carrier F2/F5, deexcitation F3/F5, then in activation command, carry all system informations and the dedicated radio resources configuration information (step 108) of F2/F5 again, UE returns carrier wave and activates success response, and on F1/F4 and F2/F5 UE is carried out scheduling of resource (step 109～step 110).From flow process shown in Figure 1 as seen, when activating component carrier, all need to carry the bulk information of new activation carrier wave at every turn.
Equally, after switching is finished,, also need the system configuration information of a plurality of component carriers of terminal by obtaining Target cell someway on a plurality of component carriers for terminal can be dispatched.At this moment, can use the thought of such scheme three, in switching command, carried terminal is at PCI, frequency, bandwidth, the common radio resources configuration information of component carrier and the component carrier dedicated radio resources configuration information that terminal is used of the component carrier of Target cell use.
Fig. 2 is the existing flow chart that utilizes the method for the activation component carrier of scheme three after UE has switched, as shown in Figure 2, UE finishes the switching from source eNodeB to target eNode B, use component carrier F1/F4, hypothetical target eNodeB passes through activation command, activate the component carrier F2/F5 that UE uses, in activation command, carry all system informations and the dedicated radio resources configuration information of F2/F5, UE returns carrier wave and activates success response afterwards, and on F1/F4 and F2/F5 UE is carried out scheduling of resource (step 200～step 203).Suppose as required, activation command is passed through in the base station, the component carrier F3/F5 that activated terminals uses, deexcitation F2/F5, in activation command, carry all system informations of F3/F5 and dedicated radio resources configuration information, UE returns carrier wave and activates success response, and on F1/F4 and F3/F5 UE is carried out scheduling of resource (step 204～step 206).Suppose afterwards more as required, activation command is passed through in the base station, activate the component carrier F2/F5 that UE uses, deexcitation F3/F5, need in activation command, to carry again all system informations of F2/F5 and dedicated radio resources configuration information again, UE returns carrier wave and activates success response, and on F1/F4 and F2/F5 UE is carried out scheduling of resource (step 207～step 209).Same, from flow process shown in Figure 2 as can be seen, when activating component carrier, all need to carry the bulk information of new activation carrier wave at every turn.
From example illustrated in figures 1 and 2 as seen, the UE of existing scheme three obtains the method for the system configuration information of other component carrier, has increased the content of dedicated signaling greatly.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method that activates component carrier, can reduce the signaling size that component carrier activates, and the mitigation system burden guarantees that making full use of terminal dispatches at all component carriers of sub-district.
Another object of the present invention is to provide a kind of system that activates component carrier, can reduce the signaling size that component carrier activates, the mitigation system burden guarantees that making full use of terminal dispatches at all component carriers of sub-district.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of method that activates component carrier, this method comprises:
User terminal UE obtains the essential information of non-resident or non-service or untapped component carrier from network side, and reads the system message of correspondence according to the essential information that obtains;
Network side activates the component carrier that UE uses, and carries out scheduling of resource on the carrier wave that activates.
Also comprise before this method:
Described UE enters connection status from idle condition; Perhaps,
Described UE switches to another sub-district from a sub-district; Perhaps,
Described UE initiates radio resource control RRC connection reconstruction process.
When described UE when idle condition enters connection status, the essential information that described UE obtains non-resident or non-service or untapped component carrier specifically comprises:
The described UE that is in idle condition in the system message of resident component carrier, the essential information of carrying other non-resident component carrier of sub-district by broadcasting.
When described UE when idle condition enters connection status or after entering connection status, the essential information that described UE obtains non-resident or non-service or untapped component carrier specifically comprises:
Base station under the described UE is by the essential information of other non-resident component carrier of dedicated signaling notice UE sub-district.
Described dedicated signaling is that message is set up in the RRC connection, or RRC connection reconfiguration message, or the carrier wave configuration messages.
After described UE switched to Target cell, the essential information that described UE obtains non-resident or non-service or untapped component carrier specifically comprised:
Described UE carries the essential information of other component carrier of sub-district by broadcasting in the system message of the component carrier that Target cell uses.
When described UE switches to the handoff procedure of another sub-district from a sub-district, or switch finish after, the essential information that described UE obtains non-resident or non-service or untapped component carrier specifically comprises:
The base station was by the essential information of other untapped component carrier of dedicated signaling notice UE sub-district under described UE was current.
Described dedicated signaling is the carrier wave configuration messages, or RRC connects reconfiguration message.
When described UE in RRC connection reconstruction process or rebuild finish after, the essential information that described UE obtains non-resident or non-service or untapped component carrier specifically comprises:
In the system message of the component carrier that described UE uses the sub-district after reconstruction, the essential information of carrying other component carrier of sub-district by broadcasting.
When described UE in RRC connection reconstruction process or rebuild finish after, the essential information that described UE obtains non-resident or non-service or untapped component carrier specifically comprises:
Other does not use the essential information of component carrier to the affiliated base station of described UE by dedicated signaling notice UE sub-district.
Described dedicated signaling is a RRC connection reconstruction message, or RRC connection reconfiguration message, or the carrier wave configuration messages.
The essential information of described component carrier comprises PCI, frequency, the bandwidth information of component carrier.
A kind of system that activates component carrier comprises UE and network side, wherein,
UE is used for obtaining from network side the essential information of non-resident or non-service or untapped component carrier, and reads the system message of correspondence according to the essential information that obtains;
Network side is used to activate the component carrier that UE uses, and carries out scheduling of resource on the carrier wave that activates.
Described network side is the base station.
The technical scheme that provides from the invention described above as can be seen, UE reads its system message according to the essential information of the non-resident or untapped component carrier that obtains from network side; Network side activates the component carrier that UE uses, and carries out scheduling of resource on the carrier wave that activates.The present invention is by broadcasting or dedicated signaling, UE has obtained the essential information of the component carrier of non-resident or non-service, or the essential information of the untapped component carrier of switching back UE, and UE self reads the system message of these non-resident or non-services or untapped component carrier according to these essential informations, like this, avoided system message, significantly reduced the signaling size that carrier wave activates, alleviated system burden by each component carrier of dedicated signaling notice UE; For the base station,, guaranteed to make full use of terminal and dispatched at all component carriers of sub-district then by smaller activation signaling.
Description of drawings
Fig. 1 is the flow chart of the method for the activation component carrier of existing scheme three;
Fig. 2 is the existing flow chart that utilizes the method for the activation component carrier of scheme three after UE has switched;
Fig. 3 activates the flow chart of the method for component carrier for the present invention;
Fig. 4 activates the flow chart of first embodiment of component carrier for the present invention;
Fig. 5 activates the flow chart of second embodiment of component carrier for the present invention;
Fig. 6 activates the flow chart of the 3rd embodiment of component carrier for the present invention;
Fig. 7 activates the flow chart of the 4th embodiment of component carrier for the present invention;
Fig. 8 activates the flow chart of the 5th embodiment of component carrier for the present invention;
Fig. 9 activates the flow chart of the 6th embodiment of component carrier for the present invention;
Figure 10 activates the flow chart of the 7th embodiment of component carrier for the present invention;
Figure 11 activates the flow chart of the 8th embodiment of component carrier for the present invention;
Figure 12 activates the flow chart of the 9th embodiment of component carrier for the present invention.
Embodiment
Fig. 3 is the flow chart that the present invention activates the method for component carrier, as shown in Figure 3, may further comprise the steps:
Step 300:UE obtains the essential information of non-resident or non-service or untapped component carrier from network side, and reads the system message of correspondence according to the essential information that obtains.
UE enters connection status from idle condition, perhaps switch to another sub-district from a sub-district, perhaps during the RRC connection reconstruction, the essential information except that resident component carrier, non-resident component carrier of UE by obtaining from network side reads the system message of these component carriers.Wherein, the essential information of component carrier comprises PCI, frequency, bandwidth information of component carrier etc.
Wherein, UE specifically comprises from the essential information that network side obtains non-resident or untapped component carrier:
When UE when idle condition enters connection status, the UE of idle condition in the system message of resident component carrier, carry the essential information of other component carrier of sub-district by broadcasting, like this, terminal is according to the essential information of these indicated in essential information component carriers, searches for these component carriers and reads system message on these component carriers respectively.Here according to essential information to the search of component carrier and read and belong to those skilled in the art's conventional techniques means, repeat no more here, its specific implementation method also is not intended to limit the scope of the invention.
Perhaps, when terminal when idle condition enters connection status or after entering connection status, the base station is by the essential information of other component carrier of dedicated signaling notice terminal sub-district under the UE.Terminal is according to the essential information of these indicated in essential information component carriers, searches for these component carriers and reads system message on these component carriers.Wherein, dedicated signaling can be that message is set up in Radio Resource control (RRC) connection, or RRC connection reconfiguration message, or the carrier wave configuration messages.
Perhaps, after terminal switched to Target cell, terminal carried the essential information of other component carrier of sub-district by broadcasting in the system message of the component carrier that Target cell uses.Terminal is according to the essential information of these indicated in essential information component carriers, searches for these component carriers and reads system message on these component carriers.
Perhaps, when terminal switches to the handoff procedure of another sub-district from a sub-district, or switch finish after, the base station is by the essential information of other component carrier of dedicated signaling notice terminal sub-district under the UE.Terminal is according to the essential information of these indicated in essential information component carriers, searches for these component carriers and reads system message on these component carriers.Wherein, dedicated signaling can be the carrier wave configuration messages, or RRC connects reconfiguration message.
Perhaps, when terminal in RRC connection reconstruction process or rebuild finish after, in the system message of the component carrier that use the sub-district of terminal after reconstruction, carry the essential information of other component carrier of sub-district by broadcasting.Terminal is according to the essential information of these indicated in essential information component carriers, searches for these component carriers and reads system message on these component carriers.
Perhaps, when terminal in RRC connection reconstruction process or rebuild finish after, the base station is by the essential information of other component carrier of dedicated signaling notice terminal sub-district under the UE.Terminal is according to the essential information of these indicated in essential information component carriers, searches for these component carriers and reads system message on these component carriers.Wherein, dedicated signaling can be a RRC connection reconstruction message, or RRC connection reconfiguration message, or the carrier wave configuration messages.
Step 301: network side activates the component carrier that UE uses, and carries out scheduling of resource on the carrier wave that activates.The specific implementation of this step belongs to prior art, repeats no more here.
What the inventive method was emphasized is, by broadcasting or dedicated signaling, UE has obtained the essential information of non-resident component carrier or has switched the essential information of the untapped component carrier of back UE, and UE self reads the system message of these non-resident or non-services or untapped component carrier according to these essential informations, like this, avoided system message, significantly reduced the signaling size that carrier wave activates, alleviated system burden by each component carrier of dedicated signaling notice UE; For the base station,, guaranteed to make full use of terminal and dispatched at all component carriers of sub-district then by smaller activation signaling.
At the inventive method, a kind of system that activates component carrier also is provided, comprise UE and network side, wherein,
UE is used for reading its system message according to the non-resident or non-service that obtains from network side or the essential information of untapped component carrier.
Network side is used to activate the component carrier that UE uses, and carries out scheduling of resource on the carrier wave that activates.
Wherein, network side is the base station.
Embodiment below in conjunction with under the different situations is described in detail the inventive method.
Fig. 4 activates the flow chart of first embodiment of component carrier for the present invention, first embodiment enters connection status for UE from idle condition, UE in the system message of resident component carrier, carry the situation of the essential information of non-resident component carrier by broadcasting.Suppose that the sub-district is a LTE-A multi-carrier district, descending important carrier wave F1 and F2, up important carrier wave F3 and F4, F1/F3 wherein, F2/F4 is respectively a pair of up-downgoing frequency.UE resides on the component carrier F1 in idle condition, and PCI, frequency, the bandwidth information of important carrier wave F2 broadcasted in the base station on component carrier F1.As shown in Figure 4, comprising:
Step 400:UE initiates RRC to the base station and connects the request of foundation on component carrier F1.
Step 401: the base station is the UE Resources allocation on F1/F3 after the RRC that receives terminal connects the request of foundation, and returns the RRC connection to UE and set up message.
Step 402～step 403:UE connects the content of setting up message according to the RRC from the base station and is configured, and sends the RRC connection setup complete message to the base station afterwards.At this moment, UE has only the configuration information of component carrier F1/F3, so the RRC connection is based upon on the component carrier F1/F3.
Step 404:UE is after RRC connection foundation is finished, because it is the frequency of component carrier F2/F4 that other component carrier of sub-district is arranged on the component carrier F1 of sub-district, essential informations such as bandwidth, so, UE is according to these essential informations, reading the system message of component carrier F2, mainly is information such as MIB/SIB1/SIB2.
Step 405: the base station sends the carrier wave activation command to UE, the component carrier F2/F4 that activated terminals uses.
After step 406:UE receives the carrier wave activation command of base station, begin to intercept the schedule information of the PDCCH of component carrier F4, and send carrier wave to the base station and activate success response message.
Step 407: after the base station was received and activated success response message from the carrier wave of UE, beginning was carried out scheduling of resource to UE on F1/F3 and F2/F4.
Fig. 5 activates the flow chart of second embodiment of component carrier for the present invention, and second embodiment enters connection status for UE from idle condition, connects the situation that message is carried the essential information of the component carrier that UE uses of setting up by RRC.Suppose that the sub-district is a LTE-A multi-carrier district, descending important carrier wave F1 and F2, up important carrier wave F3 and F4, F1/F3 wherein, F2/F4 is respectively a pair of up-downgoing frequency.UE resides on the component carrier F1 in idle condition, and PCI, the frequency of component carrier F2/F4, bandwidth information are not broadcasted in the base station on component carrier F1.As shown in Figure 5, comprising:
Step 500:UE initiates RRC to the base station and connects the request of foundation on component carrier F1.
Step 501: the base station is after the RRC that receives UE connects the request of foundation, it on F1/F3 the UE Resources allocation, and carry the essential informations such as frequency, bandwidth of sub-district component carrier F2/F4, send RRC to UE and connect and set up message, component carrier F1/F3 and F2/F4 that configuration UE is used.
Step 502～step 503:UE receives that the RRC of base station connects and sets up message, is configured according to the content in the message.Send the RRC connection setup complete message to the base station.Simultaneously, terminal connects the frequency set up component carrier F2/F4 in the message according to RRC, and essential informations such as bandwidth read the system message of component carrier F2, mainly are information such as MIB/SIB1/SIB2.
Step 504: at this moment, UE has only the configuration information of component carrier F1/F3, so the RRC connection is based upon on the component carrier F1/F3.
Step 505: the base station sends reconfiguration message to UE, and (RB RadioBearer), and activates the component carrier F2/F4 that UE uses to set up professional radio bearer.
After step 506:UE receives the reconfiguration message of base station, begin to intercept the schedule information of the PDCCH of component carrier F2, send to the base station afterwards and reshuffle success response message.
Step 507: the base station receive from UE reshuffle success response message after, the beginning on F1/F3 and F2/F4, terminal is carried out scheduling of resource.
Fig. 6 enters connection status for UE from idle condition at the 3rd embodiment for the present invention activates the flow chart of the 3rd embodiment of component carrier, carries the situation of the essential information of the component carrier that UE uses by the special carrier configuration signal.Suppose that the sub-district is a LTE-A multi-carrier district, descending important carrier wave F1, F2 and F3, up important carrier wave F4 and F5, F1/F3 wherein, F2/F5, F3/F5 are respectively a pair of up-downgoing frequencies.UE resides on the component carrier F1 in idle condition, and information such as component carrier F2/F5, the PCI of F3/F5, frequency, bandwidth are not broadcasted in the base station on component carrier F1.As shown in Figure 6, comprising:
Step 600～step 601:UE sets up process and reconfiguration course by the RRC connection, and business is based upon on the F1/F4, and this moment, UE had only the configuration information of component carrier F1/F4.
Step 602: the base station sends the carrier wave configuring request to UE according to demand, component carrier F1/F4 and F2/F5 that configuration UE is used, and the essential informations such as PCI, frequency, bandwidth of carrying sub-district component carrier F2/F5.
Step 603～step 604:UE receives the carrier wave configuring request from the base station, component carrier F1/F4 and F2/F5 that configuration UE is used, and according to PCI, the frequency of component carrier F2, bandwidth information, read the system message on the F2, mainly comprise MIB/SIB1/SIB2 information.Return carrier wave configuration successful response message to the base station.Need to prove that the configuration successful response message is an optional message.
Step 605: after carrier wave configuration successful response message from UE is received in the base station, as required, send the carrier wave activation command, activate the component carrier F2/F5 that UE uses to UE.
After step 606:UE receives the carrier wave activation command of base station, begin to intercept the schedule information of the PDCCH of component carrier F2, and send carrier wave to the base station and activate success response message.
Step 607: after the base station was received and activated success response message from the carrier wave of UE, beginning was carried out scheduling of resource to terminal on F1/F4 and F2/F5.
Fig. 7 activates the flow chart of the 4th embodiment of component carrier for the present invention, after the 4th embodiment finishes for UE switches, UE in the system message of resident component carrier, carry the situation of the essential information of non-resident component carrier by broadcasting.Suppose that switching target small area is a LTE-A multi-carrier district, descending important carrier wave F1 and F2, up important carrier wave F3 and F4, F1/F3 wherein, F2/F4 is respectively a pair of up-downgoing frequency.PCI, the frequency of important carrier wave F2, bandwidth information are broadcasted in the base station on Target cell component carrier F1.As shown in Figure 7, comprising:
Step 700～step 701:UE switching is finished, and uses component carrier F1/F3 at Target cell, so after switching was finished, UE had only the configuration information of component carrier F1/F3.Because it is PCI, the frequency of component carrier F2/F4 that other component carrier of sub-district is arranged on the component carrier F1 of sub-district, essential informations such as bandwidth, thus UE after switching is finished, can be according to these essential informations, reading the system message of component carrier F2, mainly is information such as MIB/SIB1/SIB2.
Step 702: target BS (Target eNodeB) sends the carrier wave activation command to UE, the component carrier F2/F4 that activated terminals uses.
After step 703:UE receives carrier wave activation command from target BS, begin to intercept the schedule information of the PDCCH of component carrier F2, and send carrier wave to target BS and activate success response message.
Step 704: after target BS received that the carrier wave of UE activates success response message, beginning was carried out scheduling of resource to terminal on F1/F3 and F2/F4.
Fig. 8 activates the flow chart of the 5th embodiment of component carrier for the present invention, and the 5th embodiment is the situation of the component carrier that carries UE use in switching command.Suppose that switching target small area is a LTE-A multi-carrier district, descending important carrier wave F1 and F2, up important carrier wave F3 and F4, F1/F3 wherein, F2/F4 is respectively a pair of up-downgoing frequency.Target BS is not broadcasted PCI, the frequency of component carrier F2, bandwidth information on component carrier F1.As shown in Figure 8, comprising:
The component carrier F1 that step 800:UE measures switching target small area satisfies the handover measurement condition, sends measurement report to source base station (Source eNodeB).
Step 801: after source base station is received measurement report from UE, send handoff request, the information of carrying component carrier F1 in the handoff request to target BS.
Step 802: target BS is the UE Resources allocation on F1/F3 after receiving handoff request from source base station.Target BS sends handoff request acknowledgment message to source base station, configurating terminal uses in this handoff request acknowledgment message component carrier F1/F3 and F2/F4, and the essential informations such as PCI, frequency, bandwidth of carrying sub-district component carrier F2/F4.
Step 803: after source base station receives handoff request acknowledgment message, send the RRC that switches to UE and connect reconfiguration message, in this RRC connection reconfiguration message, carry the resource information of UE at the F1/F3 of Target cell use, and configuration UE the component carrier F1/F3 and the F2/F4 that use at Target cell, and the essential informations such as PCI, frequency, bandwidth of carrying Target cell component carrier F2/F4.
Step 804～step 805:UE receives that the RRC from source base station connects reconfiguration message, is configured according to the content in the message.Connect to reshuffle to target BS transmission RRC afterwards and finish message.Simultaneously, UE connects the frequency of the component carrier F2 in the reconfiguration message according to RRC, and essential informations such as bandwidth read the system message of component carrier F2, mainly are information such as MIB/SIB1/SIB2.
Step 806: target BS sends the carrier wave activation command to UE, the component carrier F2/F4 that activated terminals uses.
After step 807:UE receives carrier wave activation command from target BS, begin to intercept the schedule information of the PDCCH of component carrier F2, and send carrier wave to the base station and activate success response message.
Step 808: after target BS was received and activated success response message from the carrier wave of UE, beginning was carried out scheduling of resource to terminal on F1/F3 and F2/F4.
Fig. 9 activates the flow chart of the 6th embodiment of component carrier for the present invention, after the 6th embodiment finishes for UE switches, and the situation of the component carrier that uses by special carrier configuration order configuration UE.Suppose that switching target small area is a LTE-A multi-carrier district, descending important carrier wave F1 and F2, up important carrier wave F3 and F4, F1/F3 wherein, F2/F4 is respectively a pair of up-downgoing frequency.Target BS is PCI, the frequency of broadcasting component carrier F2/F4 on component carrier F1, essential informations such as bandwidth.As shown in Figure 9, comprising:
The component carrier F1 that step 900:UE measures switching target small area satisfies the handover measurement condition, sends measurement report to source base station.
Step 901: after source base station is received measurement report from UE, send handoff request, the information of carrying component carrier F1 in the handoff request message to target BS.
Step 902: target BS is the terminal distribution resource on F1/F3 after receiving handoff request from source base station, and sends handoff request acknowledgment message to source base station.
Step 903: after source base station receives handoff request acknowledgment message, send the RRC that switches to UE and connect reconfiguration message, carry the resource information of UE in the message at the F1/F3 of Target cell use.
Step 904:UE receives that the RRC of source base station connects reconfiguration message, is configured according to the content in this message, connects to reshuffle to target BS transmission RRC afterwards and finishes message.
Step 905: target BS the RRC that receives UE connect reshuffle finish message after, according to demand, send the carrier wave configuration messages to UE, component carrier F1/F3 and F2/F4 that configuration UE is used, and the essential informations such as PCI, frequency, bandwidth of carrying sub-district component carrier F2/F4.
Step 906～step 907:UE receives the carrier wave configuration messages that relies at target BS, component carrier F1/F3 and F2/F4 that configuration UE is used, and according to PCI, the frequency of component carrier F2, essential informations such as bandwidth information, read the system message on the F2, mainly comprise information such as MIB/SIB1/SIB2.Send carrier wave configuration successful response message to target BS afterwards.Need to prove that carrier wave configuration successful response message is an optional message.
Step 908: after target BS is received carrier wave configuration successful response message from UE, as required, send the carrier wave activation command, the component carrier F2/F4 that activated terminals uses to UE.
After step 909:UE receives carrier wave activation command from target BS, carry out carrier wave and activate, send carrier wave to target BS and activate success response message.
Step 910: after target BS was received and activated success response message from the carrier wave of UE, beginning was carried out scheduling of resource to terminal on F1/F3 and F2/F4.
Figure 10 activates the flow chart of the 7th embodiment of component carrier for the present invention, the 7th embodiment finishes the RRC connection reconstruction for UE in new sub-district, UE in the system message of resident component carrier, carry the situation of the essential information of non-resident component carrier by broadcasting.Suppose that switching target small area is a LTE-A multi-carrier district, descending important carrier wave F1 and F2, up important carrier wave F3 and F4, F1/F3 wherein, F2/F4 is respectively a pair of up-downgoing frequency.PCI, the frequency of important carrier wave F2/F4, bandwidth information are broadcasted in the base station on Target cell component carrier F1.As shown in figure 10, comprising:
Step 1000～step 1001:UE finishes the RRC connection reconstruction by RRC connection reconstruction process then to the handoff failure of Target cell on the component carrier F1/F3 of new sub-district (being Target cell).This moment, terminal had only the configuration information of Target cell component carrier F1/F3.
Step 1002: because on the component carrier F1 of sub-district other component carrier of sub-district is arranged is PCI, the frequency of component carrier F2/F4, essential informations such as bandwidth, so UE is after the RRC connection reconstruction is finished, according to these essential informations, reading the system message of component carrier F2, mainly is information such as MIB/SIB1/SIB2.
Step 1003: target BS sends reconfiguration message to UE, with the business of rebuilding, and activates the component carrier F2/F4 that UE uses.
After step 1004:UE receives reconfiguration message from target BS, begin to intercept the schedule information of the PDCCH of component carrier F2, send to the base station afterwards and reshuffle success response message.
Step 1005: target BS receive from UE reshuffle success response message after, the beginning on F1/F3 and F2/F4, UE is carried out scheduling of resource.
Figure 11 activates the flow chart of the 8th embodiment of component carrier for the present invention, and the 8th embodiment carries out the RRC connection reconstruction in new sub-district, the situation of the component carrier that configuration UE is used in RRC connection reconstruction message for UE.Suppose that switching target small area is a LTE-A multi-carrier district, descending important carrier wave F1 and F2, up important carrier wave F3 and F4, F1/F3 wherein, F2/F4 is respectively a pair of up-downgoing frequency.Target BS is not broadcasted PCI, the frequency of important carrier wave F2, bandwidth information on component carrier F1.As shown in figure 11, comprising:
Step 1100～step 1101:UE is to the handoff failure of Target cell, and UE carries out cell selecting, finds that Target cell F1 is the best sub-district of signal quality, initiates the RRC connection reconstruction on Target cell F1, sends RRC connection reconstruction request message to target BS.
Step 1102: target BS is the UE Resources allocation on F1/F3 after receiving RRC connection reconstruction request from UE.Send RRC connection reconstruction message to UE, configuration UE is used in this message component carrier F1/F3 and F2/F4, and the essential informations such as PCI, frequency, bandwidth of carrying sub-district component carrier F2/F4.
Step 1103～step 1104:UE receives the RRC connection reconstruction message from target BS, is configured according to the content in this message.Send the RRC connection reconstruction to target BS afterwards and finish message.Simultaneously, UE is according to PCI, the frequency of the component carrier F2 in the RRC connection reconstruction message, and essential informations such as bandwidth read the system message of component carrier F2, mainly are information such as MIB/SIB1/SIB2.
Step 1105: after the RRC connection reconstruction is finished, connect reconfiguration course, on F1/F3, rebuild professional by RRC.
Step 1106: target BS sends the carrier wave activation command to UE, activates the component carrier F2/F4 that UE uses.
After step 1107:UE receives carrier wave activation command from target BS, begin to intercept the schedule information of the PDCCH of component carrier F2, send carrier wave to the base station afterwards and activate success response message.
Step 1108: after target BS was received and activated success response message from the carrier wave of UE, beginning was carried out scheduling of resource to terminal on F 1/F3 and F2/F4.
Figure 12 activates the flow chart of the 9th embodiment of component carrier for the present invention, and the 9th embodiment is for after the RRC connection reconstruction finishes, the situation of the carrier component that uses by special carrier configuration order configuration UE.Suppose that switching target small area is a LTE-A multi-carrier district, descending important carrier wave F1 and F2, up important carrier wave F3 and F4, F1/F3 wherein, F2/F4 is respectively a pair of up-downgoing frequency.Target BS is not broadcasted PCI, the frequency of component carrier F2/F4, bandwidth information on component carrier F1.As shown in figure 12, comprising:
Step 1200～step 1201:UE finishes the RRC connection reconstruction by RRC connection reconstruction process on the component carrier F1/F3 of new sub-district (Target cell) behind the handoff failure of Target cell.This moment, terminal had only the configuration information of Target cell component carrier F1/F3.
After step 1202:RRC connection reconstruction is finished, target BS sends reconfiguration message to UE according to demand, component carrier F1/F3 and F2/F4 that configurating terminal uses, on component carrier F1/F3, rebuild professional, and essential informations such as PCI, frequency, bandwidth of carrying sub-district component carrier F2/F4.
Step 1203～step 1204:UE receives the reconfiguration message from target BS, component carrier F1/F3 and F2/F4 that configuration UE is used, and according to PCI, the frequency of component carrier F2/F4, bandwidth information, read the system message on the F2, mainly comprise MIB/SIB1/SIB2 information.Success response message is reshuffled in transmission to the base station.Need to prove that reshuffling success response message is an optional message.
Step 1205: target BS receive from UE reshuffle success message after, as required, send the carrier wave activation command to UE, activate the component carrier F2/F4 that UE uses.
After step 1206:UE receives the carrier wave activation command of target BS, begin to intercept the schedule information of the PDCCH of component carrier F2, and send carrier wave to the base station and activate success response message.
Step 1207: after target BS was received and activated success response message from the carrier wave of UE, beginning was carried out carrier dispatching to UE on F1/F3 and F2/4.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (14)
1. a method that activates component carrier is characterized in that, this method comprises:
User terminal UE obtains the essential information of non-resident or non-service or untapped component carrier from network side, and reads the system message of correspondence according to the essential information that obtains;
Network side activates the component carrier that UE uses, and carries out scheduling of resource on the carrier wave that activates.
2. method according to claim 1 is characterized in that, also comprises before this method:
Described UE enters connection status from idle condition; Perhaps,
Described UE switches to another sub-district from a sub-district; Perhaps,
Described UE initiates radio resource control RRC connection reconstruction process.
3. method according to claim 1 is characterized in that, when described UE when idle condition enters connection status, the essential information that described UE obtains non-resident or non-service or untapped component carrier specifically comprises:
The described UE that is in idle condition in the system message of resident component carrier, the essential information of carrying other non-resident component carrier of sub-district by broadcasting.
4. method according to claim 1 is characterized in that, when described UE when idle condition enters connection status or after entering connection status, the essential information that described UE obtains non-resident or non-service or untapped component carrier specifically comprises:
Base station under the described UE is by the essential information of other non-resident component carrier of dedicated signaling notice UE sub-district.
5. method according to claim 4 is characterized in that, described dedicated signaling is that message is set up in the RRC connection, or RRC connection reconfiguration message, or the carrier wave configuration messages.
6. method according to claim 1 is characterized in that, after described UE switched to Target cell, the essential information that described UE obtains non-resident or non-service or untapped component carrier specifically comprised:
Described UE carries the essential information of other component carrier of sub-district by broadcasting in the system message of the component carrier that Target cell uses.
7. method according to claim 1 is characterized in that, when described UE switches to the handoff procedure of another sub-district from a sub-district, or switch finish after, the essential information that described UE obtains non-resident or non-service or untapped component carrier specifically comprises:
The base station was by the essential information of other untapped component carrier of dedicated signaling notice UE sub-district under described UE was current.
8. method according to claim 7 is characterized in that, described dedicated signaling is the carrier wave configuration messages, or RRC connects reconfiguration message.
9. method according to claim 1 is characterized in that, when described UE in RRC connection reconstruction process or rebuild finish after, the essential information that described UE obtains non-resident or non-service or untapped component carrier specifically comprises:
In the system message of the component carrier that described UE uses the sub-district after reconstruction, the essential information of carrying other component carrier of sub-district by broadcasting.
10. method according to claim 1 is characterized in that, when described UE in RRC connection reconstruction process or rebuild finish after, the essential information that described UE obtains non-resident or non-service or untapped component carrier specifically comprises:
Other does not use the essential information of component carrier to the affiliated base station of described UE by dedicated signaling notice UE sub-district.
11. method according to claim 10 is characterized in that, described dedicated signaling is a RRC connection reconstruction message, or RRC connection reconfiguration message, or the carrier wave configuration messages.
12., it is characterized in that the essential information of described component carrier comprises the PCI of component carrier, frequency, bandwidth information according to each described method of claim 1～11.
13. a system that activates component carrier is characterized in that, comprises UE and network side, wherein,
UE is used for obtaining from network side the essential information of non-resident or non-service or untapped component carrier, and reads the system message of correspondence according to the essential information that obtains;
Network side is used to activate the component carrier that UE uses, and carries out scheduling of resource on the carrier wave that activates.
14. system according to claim 13 is characterized in that, described network side is the base station.
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