CN101998469A - Wireless link fault handling method based on carrier aggregation and user equipment - Google Patents

Wireless link fault handling method based on carrier aggregation and user equipment Download PDF

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Publication number
CN101998469A
CN101998469A CN2009101661388A CN200910166138A CN101998469A CN 101998469 A CN101998469 A CN 101998469A CN 2009101661388 A CN2009101661388 A CN 2009101661388A CN 200910166138 A CN200910166138 A CN 200910166138A CN 101998469 A CN101998469 A CN 101998469A
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carrier
jink failure
radio jink
information
network side
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邓云
黄亚达
施小娟
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ZTE Corp
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ZTE Corp
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Abstract

The invention discloses a wireless link fault handling method based on carrier aggregation and user equipment. The method comprises the following steps: after detecting that a wireless link fault happens to a carrier allocated by a network side, the user equipment notifies the network side. The user equipment comprises a detection module for detecting whether the wireless link fault happens to the carrier allocated by the network side to the user equipment, and a reporting module for reporting the information of the wireless link fault or the carrier information without wireless link fault to the network side. The invention can enable the network side to know the carrier with wireless link fault so as to carry out consequent handling.

Description

Radio jink failure processing method and subscriber equipment based on carrier aggregation
Technical field
The present invention relates to the communications field, in particular to a kind of radio jink failure processing method and subscriber equipment based on carrier aggregation.
Background technology
The wireless communication system of evolution can provide higher transmission rate, shorter propagation delay time, and can support between the inner connecting system of 3G (Third Generation) Moblie partnership project (The 3rd GenerationPartnership Project abbreviates 3GPP as) and the mobility between 3GPP connecting system and the non-3GPP connecting system.
Fig. 1 is Long Term Evolution (Long Term Evolution, abbreviate LTE as) system/System Architecture Evolution (System Architecture Evolution, abbreviate SAE as) the next generation network configuration diagram, as shown in Figure 1, it comprises Radio Access Network (the EvolvedRadio Access Network of evolution, abbreviate E-RAN as) and the packet core network (Evolved Packet Core Network abbreviates E-PCN as) of evolution.Wherein, E-RAN is made up of the base station (eNodeB abbreviates eNB as) of evolution, and E-PCN is made up of Mobility Management Entity (Mobility Management Entity abbreviates MME as) and service gateway entity (Serving Gateway abbreviates S-GW as).
In LTE Release 8, UE only uses a descending carrier and a up-link carrier a sub-district, in order to satisfy people to the demand of high bandwidth more, LTE Advance proposes to adopt the method for carrier aggregation so that bigger bandwidth to be provided, this moment, a sub-district was made up of a plurality of continuous or discrete carrier waves, wherein each carrier wave is called component carrier (ComponentCarrier abbreviates CC as), and the service of multicarrier can be provided for UE simultaneously.Component carrier can become the specific anchor carrier wave in sub-district (cell specific anchor carrier), also can become the specific anchor carrier wave of user (UE specific anchor carrier).If only at one-component carrier wave transmitting system message, beep-page message etc., this component carrier becomes the specific anchor carrier wave in sub-district (Cell specific anchor carrier); If a plurality of component carriers all can transmitting system message, beep-page message etc., just there is not the specific anchor carrier wave in sub-district of typical meaning this moment, for the subscriber equipment of connected state, certain component carrier of its work can become the specific anchor carrier wave of user (UE specific anchor carrier).Subscriber equipment for connected state, a plurality of component carriers of its work (receiving or send signaling or data at these carrier waves) are called activation carrier wave collection (active carriers) (also can be described as scheduling carrier wave collection or service carrier wave collection), can be divided into the up-link carrier collection (UE UL Component CarrierSet) of UE and the descending carrier collection (UE DL Component Carrier Set) of UE according to up-downgoing.Descending carrier at UE is concentrated, can also be divided into Physical Downlink Control Channel (Physical downlinkcontrol channel, abbreviate PDCCH as) carrier wave collection and Physical Downlink Shared Channel (Physical downlink shared channel, abbreviate PDSCH as) the carrier wave collection, some carrier wave may only provide PDSCH.
Whether carrier aggregation is continuous on frequency domain by each component carrier, can divide continuous carrier aggregation and discrete carrier aggregation, and so-called continuous carrier aggregation is meant that each component carrier is interconnective on frequency domain; Discontinuous carrier aggregation then refers to it is unconnected between each component carrier on frequency domain.Carrier aggregation by each component carrier whether in identical frequency band, the carrier aggregation and the carrier aggregation of striding frequency band (over multiplefrequency bands) that can be divided into single band (single band), so-called single carrier aggregation is meant all component carriers that participate in carrier aggregation all in same frequency band, and single carrier aggregation can be that continuous carrier aggregation also can be discontinuous carrier aggregation; The carrier aggregation that what is called is striden frequency band is meant that the component carrier that participates in carrier aggregation can be derived from different frequency bands.
In LTE Release 8, the reason that triggers Radio Link Failure comprises that UE detects the overtime or UE of T310 and receives medium access control (Medium Access Control, abbreviating MAC as) layer inserts the indication of problem at random or UE receives that Radio Link control (RadioLink Control abbreviates RLC as) layer reaches the indication of maximum retransmission.Particularly, T310 is overtime to be meant as UE and to be consecutively detected the specific reference signal (Cell-specific reference signals) in the sub-district of N310 descending carrier when being lower than Qout, UE then starts timer T310, surpass Qin 311 times thereby do not stop T310 if UE detects the specific reference signal N continuous in sub-district, can cause the overtime and triggering Radio Link Failure of T310.
In carrier aggregation, because UE can use a plurality of up-link carriers and descending carrier simultaneously, be irrational with regard to triggering the reconstruction that Radio Link Failure causes whole wireless connections when radio jink failure (T310 is overtime, UE receive that indication or UE that medium access control layer inserts problem at random receive that wireless chain control layer reaches the indication of maximum retransmission) appears in some descending carriers of concentrating when the carrier wave of UE, because if still have other carrier waves normally to use, UE fully can be by the still normal carrier wave realization chain of command that uses and the transmission of user face data.But, prior protocols only relates to the scene of a pair of up-downgoing carrier wave for the processing of radio jink failure, and in case detect radio jink failure, UE just triggers Radio Link Failure and rebuilds to implement wireless connections, how to handle when part carrier wave wireless link failure in carrier aggregation, occurring, do not propose effective solution at present as yet.
Summary of the invention
When radio jink failure appears in carrier aggregation middle part sub-carrier, trigger the problem of wireless connections reconstruction and propose the present invention at correlation technique, for this reason, main purpose of the present invention is to provide a kind of radio jink failure processing method and subscriber equipment based on carrier aggregation, one of to address the above problem at least.
According to an aspect of the present invention, provide a kind of radio jink failure processing method based on carrier aggregation.
Radio jink failure processing method based on carrier aggregation according to the present invention comprises: detect after network side radio jink failure occurs for the carrier wave of its distribution the notification of user equipment network side at subscriber equipment.
Preferably, the notification of user equipment network side comprises that subscriber equipment reports information that radio jink failure occurs or the carrier information that radio jink failure do not occur to network side.
Preferably, subscriber equipment is by radio resource control signaling, medium access control layer signaling or physical uplink control channel informing network side.
Preferably, the information that radio jink failure occurs comprises: the carrier information of radio jink failure and/or the indication information of radio jink failure occur.
Preferably, carrier information comprises: carrier wave frequency information and/or carrier index.
Preferably, radio jink failure comprise following one of at least: T310 is overtime, medium access control layer inserts problem at random, wireless chain control layer reaches maximum retransmission.
Preferably, the channel quality indication informing network side of subscriber equipment by physical uplink control channel the information of radio jink failure occurs or the carrier information of radio jink failure do not occur.
Preferably, the informing network side information of radio jink failure occurs or does not occur after the carrier information of radio jink failure, and said method also comprises: subscriber equipment carries out following operation: the MAC layer of reseting or hang the carrier wave correspondence that radio jink failure occurs; Perhaps hang or discharge the automatic repeat requests entity of mixing of the carrier wave correspondence that radio jink failure occurs; Perhaps hang or discharge the semi-persistent scheduling configuration of the carrier wave correspondence that radio jink failure occurs; Perhaps the carrier wave of radio jink failure appears in deletion.
Preferably, the informing network side information of radio jink failure occurs or do not occur after the carrier information of radio jink failure, and said method also comprises: network side is that subscriber equipment reconfigures carrier resource.
According to another aspect of the present invention, provide a kind of subscriber equipment.
Subscriber equipment according to the present invention comprises: detection module, and whether the carrier wave that is used to detect network side and is user equipment allocation radio jink failure occurs; Reporting module is used for reporting information that radio jink failure occurs or the carrier information that radio jink failure do not occur to network side.
Preferably, reporting module reports information that radio jink failure occurs or the carrier information that radio jink failure do not occur by radio resource control signaling, medium access control layer signaling or physical uplink control channel to network side.
Preferably, radio jink failure comprise following one of at least: T310 is overtime, medium access control layer inserts problem at random, wireless chain control layer reaches maximum retransmission.
By the present invention, detect after network side radio jink failure occurs for the carrier wave of its distribution at subscriber equipment, subscriber equipment reports the information of the carrier wave that radio jink failure occurs to network side, having solved correlation technique does not provide the problem of the processing method when radio jink failure appears in carrier wave in the carrier aggregation, and the carrier wave that network side is known radio jink failure occurs is so that carry out follow-up processing.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the next generation network configuration diagram according to the LTE system/System Architecture Evolution in the correlation technique;
Fig. 2 is the flow chart based on the radio jink failure processing method of carrier aggregation according to the embodiment of the invention;
Fig. 3 is the structured flowchart according to the subscriber equipment of the embodiment of the invention.
Embodiment
Functional overview
Consider that correlation technique triggers the problem that wireless connections are rebuild when radio jink failure appears in carrier aggregation middle part sub-carrier, the embodiment of the invention provides a kind of radio jink failure processing scheme based on carrier aggregation, the treatment principle of this scheme is: detect after network side radio jink failure occurs for the carrier wave of its distribution at subscriber equipment, subscriber equipment reports the information of the carrier wave that radio jink failure occurs to network side.The scheme of utilizing the embodiment of the invention to provide, can make network side know that the carrier wave of radio jink failure appears in UE, can avoid to the allocation of carriers resource of above-mentioned fault is appearring in this UE, thereby and the carrier wave transmitting control commands that can avoid breaking down because of utilization cause UE not receive this control command losing problem to the control of UE.
Hereinafter will describe the present invention with reference to the accompanying drawings and in conjunction with the embodiments in detail.Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.
Method embodiment
According to embodiments of the invention, a kind of radio jink failure processing method based on carrier aggregation is provided, Fig. 2 is the flow chart based on the radio jink failure processing method of carrier aggregation according to the embodiment of the invention, and this method comprises that following step S202 is to step S204:
Step S202, subscriber equipment detect network side and radio jink failure occurs for the carrier wave of its distribution, that is, subscriber equipment detects one or more carrier wave and the Radio Link problem occurs.In concrete enforcement, radio jink failure can comprise following one of at least: T310 is overtime, medium access control layer inserts problem at random, wireless chain control layer reaches maximum retransmission.
Step S204, the notification of user equipment network side, particularly, subscriber equipment reports information that radio jink failure occurs or the carrier information that radio jink failure do not occur to network side, the above-mentioned information that radio jink failure occurs can comprise: the carrier information of radio jink failure and/or radio jink failure occur (promptly, the Radio Link problem) indication information, above-mentioned carrier information can comprise: carrier wave frequency information and/or carrier index.In this step, subscriber equipment is by Radio Resource control (Radio Resource Control, abbreviate RRC as) signaling, medium access control layer signaling or physical uplink control channel (PhysicalUplink Control Channel, abbreviate PUCCH as) the informing network side, that is, report information that radio jink failure occurs or the carrier information that radio jink failure do not occur to network side.Wherein, radio resource control signaling can include but not limited to measurement report.In actual applications, network side can comprise the base station, and subscriber equipment can report the Radio Link problem of one or more carrier wave to network side.Preferably, subscriber equipment can be by channel quality indication (the Channel Quality Indicator of physical uplink control channel, abbreviate CQI as) report the information of the carrier wave that radio jink failure occurs to network side, that is, the CQI indication Radio Link problem that comprises of the PUCCH of user equipment to report or the indication that is exclusively used in the Radio Link problem.
After network side reported the information of the carrier wave that radio jink failure occurs, subscriber equipment carried out following operation at subscriber equipment: the MAC layer of reseting or hang the carrier wave correspondence that radio jink failure occurs; Perhaps hang or discharge the automatic repeat requests entity of mixing of the carrier wave correspondence that radio jink failure occurs; Perhaps hang or discharge the semi-persistent scheduling configuration of the carrier wave correspondence that radio jink failure occurs; Perhaps the carrier wave of radio jink failure appears in deletion.
After network side reported the information that radio jink failure occurs or the carrier information of radio jink failure do not occur, network side was that subscriber equipment reconfigures carrier resource at subscriber equipment.
Be described in detail below in conjunction with the implementation procedure of example the embodiment of the invention.
Example one
This exemplary application scene is a LTE Advance system, and its network architecture as shown in Figure 1.Suppose that the jurisdiction district, base station is the sub-district of carrier aggregation, UE is in idle condition in this carrier aggregation sub-district.The component carrier that the sub-district of this carrier aggregation comprises is in frequency band 1 (Band 1), descending have 3 continuous component carrier CC (f1), CC (f2), a CC (f3), up also is 3 continuous carrier wave CC (f4), CC (f5), CC (f6), need to prove, frequency information with each component carrier identifies this component carrier in this example, but the present invention does not limit the carrier identification mode.Three equal transmitting system message of descending carrier, beep-page message.
Sometime, UE is at up CC (f4), and descending CC (f1) initiates to insert at random, successfully inserts the sub-district of this carrier aggregation.Because UE support multicarrier and service traffics are very big, component carrier UL CC (f5), DL CC (f2) have been distributed for UE again in the base station, that is, this moment, UE used two component carriers simultaneously, and the up-link carrier collection of UE and the descending carrier collection of UE all comprise two carrier waves.Two carrier waves that the descending carrier of UE is concentrated all send PDCCH, and UE need receive the PDCCH of these two carrier waves always and solve one's own PDCCH according to the RNTI of UE.UE sends PUCCH and physical uplink link sharing channel (Physical Uplink Shared Channel abbreviates PUSCH as) at two up carrier waves simultaneously.In a certain moment, UE detects that the T310 of DL CC (f1) is overtime, that is, UE detects 310 out-of-sync of N continuous, start T310 after, T310 is overtime.Wherein, being provided with of N310 and T310 can be obtained by system message, also can be obtained by dedicated signaling.After UE detects the overtime indication of the T310 of DL CC (f1), do not trigger Radio Link Failure, but continue to keep being connected with network side by UL CC (f5) and DL CC (f2), UE sends the information of DL CC (f1) to network side by the RRC signaling, this information can comprise carrier wave frequency information and/or the carrier index (Carrier index) of DL CC (f1), the indication information that can also comprise the radio jink failure that DL CC (f1) occurs, promptly, T310 is overtime, and above-mentioned RRC signaling can be measurement report.
UE detect T310 overtime after, can reset or hang the MAC layer of the corresponding carrier wave of component carrier DL CC (f1) or DL CC (f1) to (that is, DL CC (f1) and UL CC (f4)) correspondence; Perhaps hang (Suspend) or discharge the HARQ entity of above-mentioned carrier wave correspondence; Perhaps hang or discharge the semi-persistent scheduling configuration (semi-persistent scheduling configuration) (if having the semi-persistent scheduling configuration) of above-mentioned carrier wave correspondence; Perhaps the part carrier wave (DL CC (f1) and/or UL CC (f4)) of radio jink failure appears in deletion.
After network side receives that the signaling of radio jink failure appears in several carrier waves of indication certain or certain that UE sends, can reconfigure carrier resource for this UE, be specifically as follows: the base station descending carrier of radio jink failure occurs or deletes corresponding descending carrier by RRC signaling UE from the descending carrier collection deletion of UE, if there is the corresponding up-link carrier of descending carrier with deletion in the up-link carrier collection of UE, base station or UE need delete corresponding up-link carrier; The base station does not send information at the carrier wave that goes wrong to this UE; For UE distributes other available up-link carriers and descending carrier so that professional continuation use.
In this example, UE only reports the radio jink failure of a pair of up-downgoing carrier wave, and in real process, UE can report many radio jink failure to up-downgoing carrier wave or asymmetric carrier wave.When UE detects the radio jink failure that one or more pairs of up-downgoing carrier waves exist radio jink failure or a plurality of descending carriers, do not trigger Radio Link Failure, and can be once report many to network side up-downgoing carrier wave or many information to descending carrier by RRC signaling or MAC layer signaling or PUCCH.
Need to prove, be to be that example describes with continuous component carrier in this example, roughly the same to the processing of the processing of discontinuous component carrier and continuous component carrier, do not repeat them here.
UE can only report the indication information of the radio jink failure of carrier wave after detecting the radio jink failure of certain or certain several carrier waves, the base station can detect the carrier wave that this radio jink failure occurs over time by HARQ mechanism (but being not limited thereto).Present embodiment is applied to LTE Advance system, be suitable for too for the WCDMA system, UE reports the information of radio jink failure to RNC in WCDMA, corresponding to the PUCCH among the LTEAdvance, in WCDMA uplink Dedicated PhysicalControl Channel (uplink DPCCH).
In addition, identify carrier wave with carrier wave frequency information in this example, in actual applications, can identify carrier wave with other information yet, the present invention does not limit this.What report in the present embodiment is the information (indication information of carrier information and/or radio jink failure) that radio jink failure occurs, UE also can report the carrier information that radio jink failure do not occur, and network side receives that the carrier information that radio jink failure do not occur also just can know the carrier information that radio jink failure occurs.Need to prove the branch that in TDD, does not have the up-downgoing carrier wave, in FDD, need the differentiating uplink and downlink carrier wave, UE need comprise descending carrier and/or up-link carrier when reporting the information that radio jink failure occurs, also need to distinguish TDD and FDD when UE need delete the part carrier wave that radio jink failure occurs.
Example two
This exemplary application scene is a LTE Advance system, and its network architecture as shown in Figure 1.Suppose that the jurisdiction district, base station is the sub-district of carrier aggregation, UE is in idle condition in this carrier aggregation sub-district.The component carrier that the sub-district of this carrier aggregation comprises is in frequency band 1 (Band 1), descending have 3 continuous component carrier CC (f1), CC (f2), a CC (f3), up also is 3 continuous carrier wave CC (f4), CC (f5), CC (f6), need to prove, frequency information with each component carrier identifies this component carrier in this example, but the present invention does not limit the carrier identification mode.Three equal transmitting system message of descending carrier, beep-page message.
Sometime, UE is at up CC (f4), and descending CC (f1) initiates to insert at random, successfully inserts the sub-district of this carrier aggregation.Because UE support multicarrier and service traffics are very big, component carrier UL CC (f5), DL CC (f2) have been distributed for UE again in the base station, that is, this moment, UE used two component carriers simultaneously, and the up-link carrier collection of UE and the descending carrier collection of UE all comprise two carrier waves.Two carrier waves that the descending carrier of UE is concentrated all send PDCCH, and UE need receive the PDCCH of these two carrier waves always and solve one's own PDCCH according to the RNTI of UE.UE sends PUCCH and PUSCH at two up carrier waves simultaneously.The a certain moment, it is overtime that UE detects the T310 of DL CC (f1), UE does not trigger Radio Link Failure, but continue to keep being connected with network side by UL CC (f2) and DL CC (f5), UE is by MAC layer signaling, claim MAC control (the MAC Control Elements of unit again, abbreviate MAC CE as) send the information of DL CC (f1) to network side, existing MAC CE comprises the buffer status report (Buffer Status Report) that UE reports, power headroom (Power Headroom), the CRNTI that also comprises network configuration, TA order (Timing Advance Command) etc., in order to realize that UE reports the information of part carrier wave by MAC CE, need the existing MACCE of expansion, make it carrier wave frequency information that comprises DL CC (f1) and/or carrier index (Carrierindex), the indication information that can also comprise the radio jink failure that DL CC (f1) occurs, that is, T310 is overtime.
UE detect T310 overtime after, can reset or hang the MAC layer of the corresponding carrier wave of component carrier DL CC (f1) or DL CC (f1) to (that is, DL CC (f1) and UL CC (f4)) correspondence; Perhaps hang (Suspend) or discharge the HARQ entity of above-mentioned carrier wave correspondence; Perhaps hang or discharge the semi-persistent scheduling configuration (semi-persistent scheduling configuration) (if having the semi-persistent scheduling configuration) of above-mentioned carrier wave correspondence; Perhaps the part carrier wave of radio jink failure appears in deletion.
After network side receives that the signaling of radio jink failure appears in several carrier waves of indication certain or certain that UE sends, can reconfigure carrier resource for this UE, be specifically as follows: the base station descending carrier of radio jink failure occurs or deletes corresponding descending carrier by RRC signaling UE from the descending carrier collection deletion of UE, if there is the corresponding up-link carrier of descending carrier with deletion in the up-link carrier collection of UE, base station or UE need delete corresponding up-link carrier; The base station does not send information at the carrier wave that goes wrong to this UE; For UE distributes other available up-link carriers and descending carrier so that professional continuation use.
In this example, UE only reports the radio jink failure of a pair of up-downgoing carrier wave, and in real process, UE can report many radio jink failure to up-downgoing carrier wave or asymmetric carrier wave.When UE detects the radio jink failure that one or more pairs of up-downgoing carrier waves exist radio jink failure or a plurality of descending carriers, do not trigger Radio Link Failure, and can be once report many to network side up-downgoing carrier wave or many information to descending carrier by RRC signaling or MAC layer signaling or PUCCH.
Need to prove, be to be that example describes with continuous component carrier in this example, roughly the same to the processing of the processing of discontinuous component carrier and continuous component carrier, do not repeat them here.
In addition, identify carrier wave with carrier wave frequency information in this example, in actual applications, can identify carrier wave with other information yet, the present invention does not limit this.What report in the present embodiment is the information (indication information of carrier information and/or fault) that radio jink failure occurs, UE also can report the carrier information that radio jink failure do not occur, and network side receives that the carrier information that radio jink failure do not occur also just can know the carrier information that radio jink failure occurs.
Example three
This exemplary application scene is a LTE Advance system, and its network architecture as shown in Figure 1.Suppose that the jurisdiction district, base station is the sub-district of carrier aggregation, UE is in idle condition in this carrier aggregation sub-district.The component carrier that the sub-district of this carrier aggregation comprises is in frequency band 1 (Band 1), descending have 3 continuous component carrier CC (f1), CC (f2), a CC (f3), up also is 3 continuous carrier wave CC (f4), CC (f5), CC (f6), need to prove, frequency information with each component carrier identifies this component carrier in this example, but the present invention does not limit the carrier identification mode.Three equal transmitting system message of descending carrier, beep-page message.
Sometime, UE is at up CC (f4), and descending CC (f1) initiates to insert at random, successfully inserts the sub-district of this carrier aggregation.Because UE support multicarrier and service traffics are very big, component carrier UL CC (f5) and UL CC (f6) have been distributed for UE again in the base station, DLCC (f2) and DL CC (f3), that is and, the up-link carrier collection of UE and the descending carrier collection of UE all comprise three carrier waves at this moment.Spent a period of time, UE is because certain reason, for example, need to send upstream data, need to initiate to insert at random, UE at first is chosen in UL CC (f4) and DL CC (f1) initiates to insert at random, yet insert not success at random, UE receives the indication of MAC layer access problem at random, UE does not trigger Radio Link Failure, but initiate once more to insert at random at UL CC (f5) and DL CC (f2), the success of access at random that current UE initiates, UE can continue to keep communicating by letter with network side, UE is by the RRC signaling, or MAC signaling, or PUCCH sends the information of UL CC (f4) and DL CC (f1) to network side, and above-mentioned information can comprise DL CC (f1), the carrier wave frequency information of UL CC (f4) and/or carrier index (Carrier index) can also comprise DL CC (f1), the indication information of the radio jink failure that UL CC (f4) occurs, that is, the MAC layer inserts problem at random.If adopt PUCCH to report the radio jink failure of part carrier wave to network side, existing P UCCH can report CQI, yet this can only indicate the CQI of current carrier wave (sending the carrier wave of PUCCH), adopt PUCCH to report the radio jink failure of part carrier wave to network side, the indicating range that needs expansion CQI, increase the CQI indication of other carrier waves, need to increase the frequency information or the carrier index (Carrier Index) of carrier wave.Need to prove, if adopt existing C QI to indicate the radio jink failure of the whole frequency band of certain carrier wave (or a plurality of carrier wave), the bit number that needs is too many, the radio jink failure of specific CQI indication component carrier can be set or adopt special-purpose sign to indicate the radio jink failure of component carrier.
UE can reset or hang the corresponding carrier wave of component carrier DL CC (f1) or DL CC (f1) the MAC layer corresponding to (that is, DL CC (f1) and UL CC (f4)) after detecting MAC layer access problem at random; Perhaps hang (Suspend) or discharge the HARQ entity of above-mentioned carrier wave correspondence; Perhaps hang or discharge the semi-persistent scheduling configuration (semi-persistent scheduling configuration) (if having the semi-persistent scheduling configuration) of above-mentioned carrier wave correspondence; Perhaps the part carrier wave (DL CC (f1) and ULCC (f4)) of radio jink failure appears in deletion.
After network side receives that the signaling of radio jink failure appears in several carrier waves of indication certain or certain that UE sends, can reconfigure carrier resource for this UE, be specifically as follows: the base station descending carrier of radio jink failure occurs or deletes corresponding descending carrier by RRC signaling UE from the descending carrier collection deletion of UE, if there is the corresponding up-link carrier of descending carrier with deletion in the up-link carrier collection of UE, base station or UE need delete corresponding up-link carrier; The base station does not send information at the carrier wave that goes wrong to this UE.
In this example, UE only reports the radio jink failure of a pair of up-downgoing carrier wave, and in real process, UE can report many radio jink failure to up-downgoing carrier wave or asymmetric carrier wave.When UE detects the radio jink failure that one or more pairs of up-downgoing carrier waves exist radio jink failure or a plurality of descending carriers, do not trigger Radio Link Failure, and can be once report many to network side up-downgoing carrier wave or many information to descending carrier by RRC signaling or MAC layer signaling or PUCCH.
Need to prove, be to be that example describes with continuous component carrier in this example, identical with the processing of continuous component carrier to the processing of discontinuous component carrier, do not repeat them here.
In addition, identify carrier wave with carrier wave frequency information in this example, in actual applications, can identify carrier wave with other information yet, the present invention does not limit this.
Example four
This exemplary application scene is a LTE Advance system, and its network architecture as shown in Figure 1.Suppose that the jurisdiction district, base station is the sub-district of carrier aggregation, UE is in idle condition in this carrier aggregation sub-district.The component carrier that the sub-district of this carrier aggregation comprises is in frequency band 1 (Band 1), descending have 3 continuous component carrier CC (f1), CC (f2), a CC (f3), up also is 3 continuous carrier wave CC (f4), CC (f5), CC (f6), need to prove, frequency information with each component carrier identifies this component carrier in this example, but the present invention does not limit the carrier identification mode.Three equal transmitting system message of descending carrier, beep-page message.
Sometime, UE is at up CC (f4), and descending CC (f1) initiates to insert at random, successfully inserts the sub-district of this carrier aggregation.Because UE support multicarrier and service traffics are very big, component carrier UL CC (f5) and CC (f6) have been distributed for UE again in the base station, DL CC (f2), CC (f3), that is and, this moment, the up-link carrier collection of UE comprised three carrier waves, the descending carrier collection of UE comprises three carrier waves.The professional E-RAB of certain of UE only goes up transmission at component carrier UL CC (f4), DL CC (f1), only goes up transmission at component carrier UL CC (f4), DL CC (f1) as the semi-persistent scheduling configuration of speech business VOIP configuration.Other business of UE can be used other component carrier.Sometime, UE receives at component carrier (UL CC (f4), DL CC (f1)) goes up the indication that the professional rlc layer that transmits reaches maximum retransmission, UE does not trigger Radio Link Failure, but report UL CC (f4) to network side by other component carrier, the information of DL CC (f1), above-mentioned information can comprise DL CC (f1), the carrier wave frequency information of UL CC (f4) and/or carrier index (Carrier index), can also comprise DL CC (f1), the indication information of the radio jink failure that UL CC (f4) occurs, that is, rlc layer reaches maximum retransmission.UE can report the information of the component carrier that radio jink failure occurs to network side by RRC signaling, MAC layer signaling or PUCCH, and concrete grammar is with top described consistent.After UE receives that rlc layer reaches the indication of maximum retransmission, can reset or hang the corresponding carrier wave of component carrier DLCC (f1) or DL CC (f1) the MAC layer corresponding to (that is, DL CC (f1) and UL CC (f4)); Perhaps hang (Suspend) or discharge the HARQ entity of above-mentioned carrier wave correspondence; Perhaps hang or discharge the semi-persistent scheduling configuration of above-mentioned carrier wave correspondence; Perhaps the component carrier of radio jink failure appears in deletion, promptly, UE is at up-link carrier collection (UE UL Component Carrier Set) the deletion UL CC (f4) of UE, at descending carrier collection (UE DL Component Carrier Set) the deletion DL CC (f1) of UE.
After network side receives that the signaling of radio jink failure appears in several carrier waves of indication certain or certain that UE sends, can reconfigure carrier resource for this UE, be specifically as follows: the base station descending carrier of radio jink failure occurs or deletes corresponding descending carrier by RRC signaling UE from the descending carrier collection deletion of UE, if there is the corresponding up-link carrier of descending carrier with deletion in the up-link carrier collection of UE, base station or UE need delete corresponding up-link carrier; The base station does not send information at the carrier wave that goes wrong to this UE.
In this example, UE only reports the radio jink failure of a pair of up-downgoing carrier wave, and in real process, UE can report many radio jink failure to up-downgoing carrier wave or asymmetric carrier wave.When UE detects the radio jink failure that one or more pairs of up-downgoing carrier waves exist radio jink failure or a plurality of descending carriers, do not trigger Radio Link Failure, and can be once report many to network side up-downgoing carrier wave or many information to descending carrier by RRC signaling or MAC layer signaling or PUCCH.
Need to prove, be to be that example describes with continuous component carrier in this example, identical with the processing of continuous component carrier to the processing of discontinuous component carrier, do not repeat them here.
In addition, identify carrier wave with carrier wave frequency information in this example, in actual applications, can identify carrier wave with other information yet, the present invention does not limit this.
By above-mentioned example, subscriber equipment can be when radio jink failure appears in the part carrier wave, do not interrupt existing wireless connections, continue to keep communication, make network side know that the carrier information of radio jink failure appears in UE simultaneously, can avoid occurring the allocation of carriers resource of above-mentioned fault for this UE, and thereby the carrier wave transmitting control commands that can avoid breaking down because of utilization causes UE not receive this control command losing problem to the control of UE, strengthened the antijamming capability of network, the reporting information of network by subscriber equipment be Resources allocation reasonably, avoids waste.
Device embodiment
According to embodiments of the invention, provide a kind of subscriber equipment.Fig. 3 is the structured flowchart according to the subscriber equipment of the embodiment of the invention.As shown in Figure 3, this subscriber equipment comprises detection module 32, reporting module 34, and the function to above module is described in detail below.
Detection module 32, whether the carrier wave that is used to detect network side and is user equipment allocation radio jink failure occurs;
Reporting module 34 is connected to detection module 32, is used for reporting information that radio jink failure occurs or the carrier information that radio jink failure do not occur to network side.
Wherein, reporting module 34 reports information that radio jink failure occurs or the carrier information that described radio jink failure do not occur by radio resource control signaling, medium access control layer signaling or physical uplink control channel to network side.
Preferably, the information of the appearance radio jink failure that reports of reporting module 34 can comprise: the carrier information of described radio jink failure and/or the indication information of described radio jink failure occur.
Preferably, the carrier information that reports of reporting module 34 can comprise: carrier wave frequency information and/or carrier index.
Preferably, the radio jink failure that detects of detection module 32 comprise following one of at least: T310 is overtime, medium access control layer inserts problem at random, wireless chain control layer reaches maximum retransmission.
Preferably, the channel quality indication of reporting module 34 by physical uplink control channel reports the information of the carrier wave that radio jink failure occurs to network side, i.e. the CQI indication Radio Link problem that comprises of the PUCCH of user equipment to report or the indication that is exclusively used in radio jink failure.
Preferably, after network side reported the information of the carrier wave that radio jink failure occurs, subscriber equipment carried out following operation in reporting module 34: the MAC layer of reseting or hang this carrier wave correspondence; Perhaps hang or discharge the automatic repeat requests entity of mixing of this carrier wave correspondence; Perhaps hang or discharge the semi-persistent scheduling configuration of this carrier wave correspondence; Perhaps delete above-mentioned carrier wave.Wherein, delete above-mentioned carrier wave and comprise: the corresponding descending carrier of descending carrier collection deletion of subscriber equipment, and/or the corresponding up-link carrier of the up-link carrier collection of subscriber equipment deletion.
Preferably, after network side reported the information that radio jink failure occurs or the carrier information of radio jink failure do not occur, network side was that subscriber equipment reconfigures carrier resource in reporting module 34.
In sum, the carrier wave that the radio jink failure processing scheme based on carrier aggregation that provides according to the embodiment of the invention can make network side know radio jink failure to occur has strengthened the antijamming capability of network so that carry out follow-up processing.
Need to prove, can in computer system, carry out in the step shown in the flow chart of accompanying drawing such as a set of computer-executable instructions, and, though there is shown logical order in flow process, but in some cases, can carry out step shown or that describe with the order that is different from herein.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and carry out by calculation element, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (12)

1. the radio jink failure processing method based on carrier aggregation is characterized in that, comprising:
Detect after network side radio jink failure occurs for the carrier wave of its distribution the described network side of described notification of user equipment at subscriber equipment.
2. method according to claim 1 is characterized in that, the described network side of described notification of user equipment comprises that described subscriber equipment reports information that described radio jink failure occurs or the carrier information that described radio jink failure do not occur to described network side.
3. method according to claim 1 is characterized in that, described subscriber equipment is notified described network side by radio resource control signaling, medium access control layer signaling or physical uplink control channel.
4. method according to claim 2 is characterized in that, the described information that radio jink failure occurs comprises: the carrier information of described radio jink failure and/or the indication information of described radio jink failure occur.
5. according to claim 2 or 4 described methods, it is characterized in that described carrier information comprises: carrier wave frequency information and/or carrier index.
6. method according to claim 1 is characterized in that, described radio jink failure comprise following one of at least: T310 is overtime, medium access control layer inserts problem at random, wireless chain control layer reaches maximum retransmission.
7. method according to claim 3, it is characterized in that described subscriber equipment is notified described network side the described information of described radio jink failure to occur by the channel quality indication of described physical uplink control channel or the carrier information of described radio jink failure do not occurred.
8. according to each described method in the claim 1 to 4, it is characterized in that notify described network side the information of described radio jink failure to occur or do not occur after the carrier information of described radio jink failure, described method also comprises:
Described subscriber equipment carries out following operation: the MAC layer of reseting or hang the carrier wave correspondence that described radio jink failure occurs; Perhaps hang or discharge the automatic repeat requests entity of mixing of the carrier wave correspondence that described radio jink failure occurs; Perhaps hang or discharge the semi-persistent scheduling configuration of the carrier wave correspondence that described radio jink failure occurs; Perhaps the carrier wave of described radio jink failure appears in deletion.
9. according to each described method in the claim 1 to 4, it is characterized in that, notify described network side the information of described radio jink failure to occur or do not occur after the carrier information of described radio jink failure, described method also comprises: described network side is that described subscriber equipment reconfigures carrier resource.
10. a subscriber equipment is characterized in that, comprising:
Detection module, whether the carrier wave that is used to detect network side and is user equipment allocation radio jink failure occurs;
Reporting module is used for reporting information that described radio jink failure occurs or the carrier information that described radio jink failure do not occur to described network side.
11. subscriber equipment according to claim 10, it is characterized in that described reporting module reports information that described radio jink failure occurs or the carrier information that described radio jink failure do not occur by radio resource control signaling, medium access control layer signaling or physical uplink control channel to described network side.
12. according to claim 10 or 11 described subscriber equipmenies, it is characterized in that, described radio jink failure comprise following one of at least: T310 is overtime, medium access control layer inserts problem at random, wireless chain control layer reaches maximum retransmission.
CN2009101661388A 2009-08-17 2009-08-17 Wireless link fault handling method based on carrier aggregation and user equipment Pending CN101998469A (en)

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