CN101848473B - Method of handling radio link failure in a wireless communication system and related communication device - Google Patents
Method of handling radio link failure in a wireless communication system and related communication device Download PDFInfo
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- CN101848473B CN101848473B CN 201010149640 CN201010149640A CN101848473B CN 101848473 B CN101848473 B CN 101848473B CN 201010149640 CN201010149640 CN 201010149640 CN 201010149640 A CN201010149640 A CN 201010149640A CN 101848473 B CN101848473 B CN 101848473B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/06—Testing, supervising or monitoring using simulated traffic
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/22—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks comprising specially adapted graphical user interfaces [GUI]
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Abstract
A method of handling radio link failure for a communication device of a wireless communication system includes performing radio problem detection for a plurality of targets of interest, and managing at least a timer for detecting radio link failure of the plurality of targets of interest.
Description
Technical field
The present invention refers to a kind of method and communication device thereof that is used for handling radio link failure for a wireless telecommunication system especially about a kind of method for a wireless telecommunication system and communication device thereof.
Background technology
Long Term Evolution (Long Term Evolution, LTE) wireless telecommunication system is a kind of advanced formula high-speed radio communication system that builds on the third generation mobile system (as global mobile communication system), it needs to support packet switching (Packet Switched) transmission, and wireless link control (Radio LinkControl, RLC) (Medium Access Control, MAC) layer can be integrated in same communication network unit to layer with medium access control.
In long evolving system, one client and a general land global radio access network (Universal Terrestrial Radio Access Network, UTRAN) may be because signal impairments, the disadvantageous signal communication environments in the wireless environment between, or systemic-function is unusual, and the generation radio link failure (radio link failure, RLF).Therefore, definition has to detect a timer of radio link failure in client, and client is assigned to a component carrier (component carrier) or is connected to a residential quarter.For instance, when client detects a wireless issue on the component carrier that is assigned to or the residential quarter that connects, can open the beginning to be used for the timer of radio link failure of detected components carrier wave or residential quarter.When this timer expiration, client is then assert the radio link failure of this component carrier or this residential quarter.In other words, when wireless issue took place, this timer can be used to judge whether the wireless link of component carrier or residential quarter fails.
For further developing the high-speed radio communication system, for example promote the hardware circuit solution of transmission data, (3rd Generation Partnership Project is that advanced formula Long Term Evolution (LTE-Advanced) system is made on the basis with the LTE system 3GPP) to third generation partner program.The main target of LTE-Advanced system includes quick transfer power state, limit, residential quarter enhancing efficiency, frequency range expansion, coordinates multicast communication/reception (Coordinated Multipoint Transmission/Reception, COMP), and multiple-input and multiple-output (Multi-Input Multi-Output, technology such as MIMO).
For realizing the frequency range extended target, 3GPP proposes a carrier wave integrated (carrier aggregation) concept in the LTE-Advanced system.Client allows to use the component carrier more than two or two, is assembled to enjoy to form a bigger transmitting bandwidth, and for example maximum frequency range can be to 100MHz, to support spectrum efficiency.According to the integrated compatibility of carrier wave, a plurality of component carriers can be assembled and formed a continuous big frequency range.Therefore, client can be set up a plurality of bindings corresponding to a plurality of component carriers, and can utilize each component carrier to carry out the transmission function simultaneously.
In addition, coordination multicast communication/reception can be considered and is used for improving high-speed transfer scope, limit, residential quarter transmission quantity in the LTE-Advanced system, an and function of system effectiveness, wherein, coordinate multicast communication/geographical dynamic coordinate of going up multi-point of reception expression, namely when client was positioned at a residential quarter edge area, this client can receive the signal of a plurality of residential quarters to meaning, and can carry out transfer function to a plurality of residential quarters.
Each client of long evolving system only allows to be linked to the residential quarter in the component carrier.When client detected a wireless issue on this component carrier or residential quarter, client can open beginning one timer, to carry out the radio link failure detection at this component carrier or residential quarter.Yet according to the LTE-Advanced system architecture, client operation is integrated or coordinate under multicast communication/receiving function at carrier wave, and can link a plurality of residential quarters in the identical or different component carrier.In the LTE-Advanced system, how its unclear client that links a plurality of component carriers or a plurality of residential quarters of formulating uses the radio link failure measuring ability.In addition, in the radio link failure measuring ability, the occupation mode that is used for detecting the timer of radio link failure is not also clearly defined.Concerning the client that can use multiple component carriers, timer opens the beginning improperly, may cause the binding of client unusual.In addition, when the component carrier generation radio link failure of client, this situation should be notified in network terminal, to assist the wireless bond failure of client process.Therefore, the information that how to transmit about the radio link failure of a plurality of component carriers also is an important issue.
Summary of the invention
Therefore, the invention provides for a wireless telecommunication system and be used for handling method and related communication devices thereof about the radio link failure of a plurality of component carrier/residential quarters.
The embodiment of the invention discloses a kind of method of handling radio link failure, is used for a communication device of a wireless telecommunication system.This method includes: a plurality of targets are carried out wireless issue detect; And when when these a plurality of targets detect a plurality of wireless issue, open the timer that the beginning is used for detecting the radio link failure of these a plurality of targets.
The embodiment of the invention also discloses a kind of method of handling radio link failure, is used for a communication device of a wireless telecommunication system.This method includes: a plurality of targets are carried out wireless issue detect; And when the target in these a plurality of targets detects a wireless issue, open the timer that the beginning is used for detecting the radio link failure of this target.
The embodiment of the invention also discloses a kind of method of handling radio link failure, is used for a communication device of a wireless telecommunication system.This method includes: a plurality of targets are carried out wireless issue detect; When one first target in these a plurality of targets detects a wireless issue, open the first timer that the beginning is used for detecting the radio link failure of this first target; And when when the target except this first target detects wireless issue, open the second timer that the beginning is used for detecting the radio link failure of the target except this first target.
The embodiment of the invention also discloses a kind of method of handling radio link failure, is used for a communication device of a wireless telecommunication system, and this communication device includes a network terminal.This method includes: a plurality of targets are carried out radio link failure detect; And according to a testing result, transmit be used to refer at least one radio link failure at a radio resource control information of at least one target of these a plurality of targets to this network terminal.
The embodiment of the invention also discloses a kind of method of handling radio link failure, is used for a network terminal of a wireless telecommunication system, and this wireless telecommunication system includes a communication device.This method includes: receive from this communication device and be used to refer at least one radio link failure at a radio resource control information of at least one target of a plurality of targets; And according to this radio resource control information, at least one target of this of this communication device of resetting.
Description of drawings
Fig. 1 is the schematic diagram that a wireless telecommunication system links a plurality of component carriers.
Fig. 2 is the schematic diagram of the embodiment of the invention one communication device.
Fig. 3 is the schematic diagram of first embodiment of the invention one flow process.
Fig. 4 is the schematic diagram according to the communication device of Fig. 3.
Fig. 5 is the schematic diagram of second embodiment of the invention one flow process.
Fig. 6 is the schematic diagram according to the communication device of Fig. 5.
Fig. 7 is the schematic diagram of third embodiment of the invention one flow process.
Fig. 8 is the schematic diagram according to the communication device of Fig. 7.
Fig. 9 is the schematic diagram of the embodiment of the invention one flow process.
Figure 10 is the flow chart according to Fig. 9.
[main element label declaration]
C1～Cn residential quarter L1～Lm wireless link
20,40,60,80 communication devices, 200 processing units
210 storage elements, 220 communication interface units
214 procedure codes, 212 storage datas
10,30,50,70,90 flow processs
300,302,304,306,500,502,504,506,700,702,704,706,708,900,902,904,906,100,102,104,106 steps
400, D1～Dm, 800 detecting units 402, M1～Mm administrative unit
404,604,804 wireless links are set up the unit
CA1～CAm, CB1～CBm, CC1～CCm component carrier
S, S1～Sm index signal CS, CS1, control signal
The 802A first administrative unit 802B second administrative unit
The SA first index signal SB second index signal
The CSA first control signal CSB second control signal
Embodiment
Please refer to Fig. 1, Fig. 1 is a client in the wireless telecommunication system and the binding schematic diagram of residential quarter C1～Cn.In addition, according to advanced formula Long Term Evolution (LTE-Advanced) system, client can operate in carrier wave integrated (carrier aggregation) and coordinate multicast communication/receiving function (CoordinatedMultipoint Transmission/Reception, COMP) under.In Fig. 1, client links by wireless link L1～Lm and residential quarter C1～Cn, wherein each wireless link among wireless link L1～Lm is corresponding to a component carrier wherein of the assigned at least one component carrier of client (component carrier), and can support evolved general land global radio access network (Evolved UMTS, E-UTRAN) wireless access technology.For instance, client is carried out communication by wireless link L1 and residential quarter C1, and carries out communication by wireless link L2～L4 and residential quarter C2, and by that analogy.Because each wireless link among wireless link L1～Lm is corresponding to one component carrier/residential quarter, therefore, at least one component carrier that client is assigned or residential quarter C1～Cn may be defined as the target (target of interest) of client in this specification.In other words, the client looks closely the residential quarter that links or the component carrier that is assigned to is the target that desire links.
Please refer to Fig. 2, Fig. 2 is the schematic diagram of the embodiment of the invention one communication device 20.Wireless communication apparatus 20 can be the client among Fig. 1, and it comprises a processing unit 200, one storage elements 210, and a communication interface unit 220.Storage element 210 can be arbitrary data memory device, and in order to storing a storage data 212, and storage data 212 includes a procedure code 214, and read and handled by processing unit 200.Storage element 210 can be subscriber identification module (Subscriber Identity Module, SIM), read-only memory (read-only memory, ROM), random access memory (random-accessmemory, RAM), compact disc read-only memory (CD-ROMs), tape (magnetic tapes), hard disk (harddisks), optical data storage device (optical data storage devices) or carrier signal (as the transfer of data of internet).Processing unit 200 is used for according to its result, the state and relevant running of control communication interface unit 220 and communication device 20.Communication interface unit 220 preferably is a wireless transceiver, in order to carry out wireless telecommunications with a network terminal.
The embodiment of the invention provides the method for processing about the radio link failure detection of a plurality of component carrier/residential quarters, and can be used to reduce signaling quantity, keep binding usefulness, or elasticity management radio link failure measuring ability.
In order to reduce signaling quantity, first embodiment of the invention provides a flow process 30, and it is used in the client of a wireless telecommunication system, and the radio link failure that is used for handling about component carrier detects.In this embodiment, the target of client is example with the component carrier, but not as the restriction of this embodiment.Flow process 30 can be compiled as procedure code 214, and includes following steps:
Step 300: beginning.
Step 302: a plurality of component carriers are carried out wireless issue detect.
Step 304: when when all component carriers detect wireless issue, open the timer that the beginning is used for detecting the radio link failure of these a plurality of component carriers.
Step 306: finish.
According to flow process 30, when when all component carriers detect wireless issue, client opens the timer that the beginning one shares, with judge component carrier whether take place radio link failure (radio link failure, RLF).In other words, when client all has wireless issue at all component carriers, just can open the beginning timer.
Illustrate the operation that wireless link detects.Client is at first carried out wireless issue to a plurality of component carriers and is detected, and when a physical layer of client when all component carriers detect wireless issue, physical layer can produce a plurality of asynchronous (consecutive out-of-synchronization) continuously and indicate a radio resource control layer to client.When radio resource control layer received this a plurality of continuous asynchronous indication, client opened the timer that the beginning is used for detecting the radio link failure of all component carriers.
When all component carriers all have wireless issue, just open the beginning timer and can reduce signaling quantity between physical layer and the radio resource control layer.Lift an example explanation, please refer to Fig. 1, client has the wireless link L1～Lm corresponding to a plurality of component carriers.When physical layer all detects wireless issue on wireless link L1～Lm-1, physical layer can not produce a plurality of continuous asynchronous indications to radio resource control layer, and when physical layer further detects wireless issue on wireless link Lm, physical layer just can produce continuous asynchronous the indication to radio resource control layer, is used for the timer that radio link failure detects to open the beginning.Therefore, in embodiments of the present invention, can reduce the signaling quantity of continuous asynchronous indication.
Preferably, physical layer need produce the continuous asynchronous indication of a special value, and wherein special value can be the N310 parameter value in the long evolving system.
In addition, open the timer of the radio link failure that the beginning is used for detecting a plurality of component carriers when client after, client can continue to carry out wireless issue and detect before timer expiration.When client and wherein a component carrier obtain when synchronous, the physical layer of client judges that then the wireless issue of this component carrier is repaired, and produces a plurality of continuous synchronization (consecutive in-synchronization) and indicate the radio resource control layer to client.When radio resource control layer received the indication of a plurality of continuous synchronization, then client stopped timer, to avoid radio link failure.
Preferably, physical layer need produce the continuous synchronization indication of a special value, and wherein special value can be the N311 parameter value in the long evolving system.
In addition, when client one default during in, when detecting any signaling on arbitrary component carrier, client thinks that then this component carrier obtains synchronously.For instance, before timer expiration, when detecting signaling as if client on wireless link L1, then the wireless issue of wireless link L1 then is regarded as repairing.Preferably, timer is a timer T310, and the radio resource control information that it can be by network terminal (can broadcast or exclusive mode transfers to client) is set.For instance, in Fig. 1, client links residential quarter C1-Cn, supposes that wherein residential quarter C1 is a main residential quarter, and residential quarter C2-Cn is less important residential quarter, and then the set point of timer can obtain by the system information of residential quarter C1.
Yet if client is not synchronous with arbitrary component carrier, meaning is that wireless issue is not repaired, and when timer expiration, client is judged a plurality of component carrier generation radio link failures.If Access Layer (Access Stratum, when AS) function of keeping secret had startup, can carry out Radio Resource control and link reconstruction algorithm, to rebuild at least one wireless link of a plurality of component carriers by client.Starting state that it should be noted that the Access Layer function of keeping secret represents client data wireless load (data radiobearer) in the use.In addition, if Radio Resource is controlled when linking the reconstruction algorithm success, client then maintains under the Radio Resource control binding pattern, and can use the Radio Resource of the wireless link of reconstruction.Otherwise if Radio Resource is controlled when linking the reconstruction algorithm failure and can't repair wireless link, client then is converted under the Radio Resource control idle mode, and discharges Radio Resource.
Please refer to Fig. 4, Fig. 4 is the schematic diagram of one embodiment of the invention one communication device 40.Communication device 40 is used for realization flow 30, and includes a detecting unit 400, an administrative unit 402, and a wireless link is set up unit 404.Detecting unit 400 is used for that communication device 40 assigned component carrier CA1～CAm are carried out wireless issue and detects, and when all detecting wireless issue on component carrier CA1～CAm, produces an index signal S.Administrative unit 402 is used for according to index signal S, opens the beginning to be used for the timer of radio link failure of detected components carrier wave CA1～CAm.
Preferably, index signal S comprises a plurality of continuous asynchronous indications.In addition, when one of them wireless issue that is detected was repaired, detecting unit 400 further produced a plurality of continuous synchronization indications, and administrative unit 402 stops timer according to these a plurality of continuous synchronization indications.On the other hand, if the wireless issue that is detected is not repaired always, when timer expiration, administrative unit 402 is judged the radio link failure of component carrier CA1～CAm, and produces a control signal CS and set up unit 404 to wireless link.When the Access Layer function of keeping secret started, wireless link was set up unit 404 according to control signal CS, carried out Radio Resource control and linked reconstruction algorithm.The detail operations of communication device 40 can not repeat them here with reference to above-mentioned explanation.
In order to keep the binding usefulness aspect of client, second embodiment of the invention provides a flow process 50, and it is used in the client of a wireless telecommunication system, and the radio link failure that is used for handling about component carrier detects.In this embodiment, the target of client is example with the component carrier, but not as the restriction of this embodiment.Flow process 50 can be compiled as procedure code 214, and includes following steps:
Step 500: beginning.
Step 502: a plurality of component carriers are carried out wireless issue detect.
Step 504: when the component carrier at a plurality of component carriers detects a wireless issue, open the beginning to be used for the timer of radio link failure of detected components carrier wave.
Step 506: finish.
According to flow process 50, when detecting wireless issue on the component carrier therein, client opens beginning one timer independently, to judge this component carrier whether radio link failure takes place.In other words, client opens beginning one timer respectively to the component carrier with wireless issue.According to Fig. 1, for an example explanation.When the component carrier of corresponding wireless link L1 had wireless issue, client opened beginning one timer, and when the component carrier of corresponding wireless link L2 had wireless issue, client opened another timer of beginning, and by that analogy.
About the operation that wireless link detects, client is at first carried out wireless issue to a plurality of component carriers and is detected.When detecting wireless issue on the component carrier therein, the physical layer of client can produce a plurality of continuous asynchronous radio resource control layers of indicating to client.When radio resource control layer received these continuous asynchronous indications, client opened the timer that the beginning is used for detecting the radio link failure of this component carrier.
Compared to flow process 30, in flow process 50, when arbitrary component carrier had wireless issue, the physical layer of client can produce a plurality of continuous asynchronous indications to radio resource control layer.Lift an example explanation, please refer to Fig. 1, client has the wireless link L1～Lm corresponding to a plurality of component carriers.When physical layer detected wireless issue on wireless link L1, it produced a plurality of continuous asynchronous indications to radio resource control layer, was used for the timer that radio link failure detects to open the beginning.
Preferably, physical layer produces the continuous asynchronous indication of a special value, and wherein special value can be aforementioned N310 parameter value.
In addition, open the timer of the radio link failure that the beginning is used for detecting this component carrier when client after, client can continue to carry out wireless issue and detect before timer expiration.When client therewith component carrier regain when synchronous, the physical layer of client judges that then the wireless issue of this component carrier is repaired, and produces a plurality of continuous synchronization and indicate radio resource control layer to client.When radio resource control layer received the indication of a plurality of continuous synchronization, client then stopped this timer, to avoid radio link failure.
Preferably, physical layer produces the continuous synchronization indication of a special value, and wherein special value can be aforementioned N311 parameter value.As above-mentioned, timer can be timer T310, and can be with reference to above-mentioned about the detail operations principle of timer, and this repeats no more again.
Yet, if client not therewith component carrier reach synchronously, this expression wireless issue is not repaired, in the case, when timer expiration, client is judged this component carrier generation radio link failure, and transmission is used to refer to a radio resource control information of important carrier wave generation radio link failure to network terminal.Component carrier is synchronous therewith as if client, and client can be carried out a RAP, to rebuild a wireless link of this component carrier.In addition, if RAP completes successfully, client can be used the Radio Resource of this wireless link.Otherwise, if random access procedure failure and can't repair wireless link the time, then client maintains under the Radio Resource control binding pattern, but can not use the Radio Resource of this wireless link.In addition, radio link failure all takes place in the component carriers all when client, and the Access Layer function of keeping secret is when having startup, and client opens beginning Radio Resource control and links reconstruction algorithm, to rebuild at least one wireless link.Complete successfully if Radio Resource control links reconstruction algorithm, client is treated can use the Radio Resource of the wireless link of reconstruction under Radio Resource control binding pattern.Otherwise when if Radio Resource control links the reconstruction algorithm failure and can't repair arbitrary wireless link, client then enters Radio Resource control idle mode, and discharges Radio Resource.It should be noted that in the embodiment about flow process 50 client is all failed up to the wireless link of all component carriers and just entered Radio Resource control idle mode, uses and keeps binding usefulness.
In addition, client also can open beginning Radio Resource control and link reconstruction algorithm, to set up the wireless link of component carrier except carrying out RAP.If Radio Resource control links the reconstruction algorithm failure and can't repair wireless link, client can maintain under the Radio Resource control binding pattern, but can't use the Radio Resource of the wireless link of not repairing.
Please refer to Fig. 6, Fig. 6 is the schematic diagram of one embodiment of the invention one communication device 60.Communication device 6 is used for realization flow 50, and includes detecting unit D1～Dm, administrative unit M1～Mm, and a wireless link is set up unit 604.Detecting unit D1～Dm is corresponding administrative unit M1～Mm respectively, and is used for communication device 60 assigned component carrier CB1～CBm are carried out the wireless issue detection.When component carrier CB1～CBm detects wireless issue, detecting unit D1～Dm produces index signal S1～Sm respectively.Administrative unit 602 is used for according to index signal S1～Sm, opens the beginning respectively to be used for the timer of radio link failure of detected components carrier wave CA1～CAm.Administrative unit M1～Mm is respective components carrier wave CB1～CBm respectively, and is used for managing the timer of the radio link failure of detected components carrier wave CB1～CBm, and can open beginning one timer respectively according to index signal S1～Sm.Preferably, each index signal S1～Sm includes a plurality of continuous asynchronous indications.
Detecting unit D1～Dm, the administrative unit M1～Mm of act one example detailed description communication device 60 and wireless link are set up the function mode between the unit 604.Suppose that detecting unit D1 detects a wireless issue at component carrier CB1.Detecting unit D1 can produce index signal S1 to administrative unit M1.Then, administrative unit M1 can be according to index signal S1, opens the beginning to be used for the timer of radio link failure of detected components carrier wave CB1.In addition, when detected wireless issue was repaired on component carrier CB1, detecting unit D1 can produce a plurality of continuous synchronization indications, and administrative unit M1 can stop timer according to a plurality of continuous synchronization indications.On the other hand, when the wireless issue of component carrier is not repaired and during timer expiration, administrative unit M1 then judges at component carrier CB1 and detects radio link failure, and produces a control signal CS1 and set up unit 604 to wireless link.According to control signal CS1, if when having the Access Layer function of keeping secret to be initiated, wireless link is set up unit 604 and can be carried out Radio Resource control and link reconstruction algorithm or RAP, to rebuild the wireless link of component carrier CB1.In like manner, the function of detecting unit D2～Dm and administrative unit M2～Mm is identical with above-mentioned detecting unit D1 and administrative unit M1.The detail operations of communication device 60 can not repeat them here with reference to above-mentioned explanation.
Considering increases under the elasticity aspect of management radio link failure function, and third embodiment of the invention provides a flow process 70, and it is used in the client of a wireless telecommunication system, and the radio link failure that is used for handling about component carrier detects.The target of client is example with the component carrier, but not as the restriction of this embodiment.Flow process 70 can be compiled as procedure code 214, and includes following steps:
Step 700: beginning.
Step 702: a plurality of component carriers are carried out wireless issue detect.
Step 704: when one first component carrier in a plurality of component carriers detects a wireless issue, open the first timer that the beginning is used for detecting the radio link failure of first component carrier.
Step 706: when when the component carrier except first component carrier detects wireless issue, open the second timer that the beginning is used for detecting the radio link failure of the component carrier except first component carrier.
Step 708: finish.
According to flow process 70, when first component carrier and remaining component carrier had wireless issue, first timer and second timer can be initiated respectively, to be used for detecting the radio link failure of first component carrier and remaining component carrier.In other words, when when first component carrier detects wireless issue, client opens and begins to be used for judging whether first component carrier first timer of radio link failure takes place, and when all detecting wireless issue on all the other component carriers, client can open and begin to be used for judging whether all the other component carriers the second timer of radio link failure takes place.
About the operation that wireless link detects, client is at first carried out wireless issue to a plurality of component carriers and is detected.When the physical layer of client when first component carrier detects wireless issue, can produce the continuous asynchronous radio resource control layer of indicating to client of first quantity.In like manner, when physical layer all detects wireless issue on remaining component carrier, can produce continuous asynchronous the indication to radio resource control layer of second quantity.Wherein, first quantity and second quantity are to be set by radio resource control layer.When radio resource control layer receives the continuous asynchronous indication of first quantity, client opens the first timer that the beginning is used for detecting the radio link failure of first component carrier, and when radio resource control layer received the continuous asynchronous indication of second quantity, client opened the second timer that the beginning is used for detecting the radio link failure of remaining component carrier.Preferably, first component carrier is the fundamental component carrier wave, and remaining component carrier is less important component carrier.
In addition, open the timer of the radio link failure that the beginning is used for detecting first component carrier when client after, client can continue to carry out wireless issue and detect before timer expiration.When client and first component carrier obtain when synchronous, the physical layer of client judges that then the wireless issue of first component carrier is repaired, and the continuous synchronization that produces the 3rd quantity is indicated the radio resource control layer to client.When radio resource control layer received the continuous synchronization indication of the 3rd quantity, client then stopped timer, to avoid the radio link failure of first component carrier.In like manner, before second timer expiration, if when client and arbitrary all the other component carriers are synchronous, client judges that the wireless issue of remaining component carrier is repaired, therefore, the physical layer of the client continuous synchronization that can transmit the 4th quantity is indicated to radio resource control layer.When radio resource control layer received the continuous synchronization indication of the 4th quantity, client can stop second timer, to avoid the radio link failure of remaining component carrier.Wherein, above-mentioned the 3rd quantity and the 4th quantity are to set by radio resource control layer.
Yet if the wireless issue of first component carrier is not repaired always, when first timer expired, client was judged the first component carrier generation radio link failure.In the case, when being activated as if the Access Layer function of keeping secret, client can open beginning Radio Resource control and link reconstruction algorithm or RAP, to rebuild the wireless link of first component carrier.If Radio Resource control links reconstruction algorithm or RAP completes successfully, client is treated under Radio Resource control binding pattern, and can be used the Radio Resource of the wireless link of reconstruction.Otherwise if Radio Resource is controlled when linking reconstruction algorithm or random access procedure failure and can't repair the wireless link of first component carrier, then client is treated under Radio Resource control binding pattern, but can't make the Radio Resource of first component carrier.It should be noted that, behind the radio link failure of first component carrier, client can not enter Radio Resource control idle mode, when the wireless link of all the other component carriers is all failed, client just can enter Radio Resource control idle mode, uses and keeps binding usefulness.
In like manner, if the wireless issue of remaining component carrier is not repaired always, when second timer expired, client was judged remaining component carrier generation radio link failure.In the case, when the Access Layer function of keeping secret was activated, client can open beginning Radio Resource control and link reconstruction algorithm or RAP, to rebuild at least one wireless link of remaining component carrier.If Radio Resource control links reconstruction algorithm or RAP completes successfully, client is treated under Radio Resource control binding pattern, and can be used the Radio Resource of the wireless link of reconstruction.Otherwise when if Radio Resource control links reconstruction algorithm or random access procedure failure thereby can't repair the wireless link of remaining component carrier, then client is treated under Radio Resource control binding pattern, but can't make the Radio Resource of remaining component carrier.It should be noted that, judge the radio link failure of remaining component carrier when client after, client can not enter Radio Resource control idle mode, unless when the wireless link of first component carrier is also failed, just client can enter Radio Resource control idle mode.If radio link failure all takes place for first component carrier and remaining component carrier, and the Access Layer function of keeping secret is when being activated, and client can open beginning Radio Resource control reconstruction algorithm, to rebuild at least one wireless link of arbitrary component carrier.Complete successfully if Radio Resource control links reconstruction algorithm, client is treated under Radio Resource control binding pattern, and can be used the Radio Resource of the wireless link of reconstruction.Otherwise if Radio Resource is controlled when linking the reconstruction algorithm failure and can't repair the wireless link of arbitrary component carrier, then client enters Radio Resource control idle mode, and discharges the Radio Resource of component carrier.
Please refer to Fig. 8, Fig. 8 is the schematic diagram of one embodiment of the invention one communication device 80.Communication device 80 is used for realization flow 70, and includes a detecting unit 800, one first administrative unit 802A, one second administrative unit 802B, and a wireless link is set up unit 804.Detecting unit 800 be used for to communication device 80 assigned component carrier CC1～CCm carry out wireless issue detect, when when the first component carrier CC1 detects wireless issue, produce one first index signal SA, and when when remaining component carrier CC2～CCm detects wireless issue, produce one second index signal SB.The first administrative unit 802A is used for according to the first index signal SA, opens the first timer that the beginning is used for detecting the radio link failure of the first component carrier CC1.The second administrative unit 80B is used for according to the second index signal SB, opens the second timer that the beginning is used for detecting the radio link failure of remaining component carrier CC2～CCm.
Preferably, the first index signal SA includes the continuous asynchronous indication of first quantity, and the second index signal SB includes the continuous asynchronous indication of second quantity.When detected wireless issue was repaired on the first component carrier CC1, detecting unit 800 produced the continuous synchronization indication of one the 3rd quantity.And when detected arbitrary wireless issue was repaired on remaining component carrier CC2～CCm, detecting unit 800 produced the continuous synchronization indication of one the 4th quantity.Preferably, first to fourth quantity can be set by radio resource control layer.In addition, the first administrative unit 802A further according to the continuous synchronization indication of the 3rd quantity, stops first timer.Otherwise when first timer expired, first administrative unit 802A judgement detected radio link failure at the first component carrier CC1, and produces one first control signal CSA.In like manner, the second administrative unit 802B further according to the continuous synchronization indication of the 4th quantity, stops second timer.Otherwise when second timer expired, second administrative unit 802B judgement detected radio link failure at remaining component carrier CC2～CCm, and produces one second control signal CSB.When the Access Layer function of keeping secret was activated, wireless link was set up unit 804 according to the first control signal CSA/, the second control signal CSB, carried out Radio Resource control and linked reconstruction algorithm or RAP.The detail operations of communication device 80 can be with reference to above-mentioned, and this repeats no more again.
In addition, the embodiment of the invention provides the method for the Radio Link Failure of handling a plurality of component carrier/residential quarters.Please refer to Fig. 9, Fig. 9 is the schematic diagram of one embodiment of the invention one flow process 90.Flow process 90 is used for a client of a wireless telecommunication system, is used for handling the radio link failure about a plurality of targets, and wherein the target of client is example with the component carrier, but not as the restriction of this embodiment.Flow process 90 can be compiled as procedure code 214, and includes following steps:
Step 900: beginning.
Step 902: a plurality of component carriers are carried out radio link failure detect.
Step 904: according to a testing result, transmission is used to refer at least one radio link failure, and (Radio Resource Control, RRC) message is to network terminal in the Radio Resource control of at least one component carrier of a plurality of component carriers.
Step 906: finish.
According to flow process 90, when when one of them of a plurality of component carriers detects radio link failure, client transmits radio resource control information that indication has the component carrier that radio link failure takes place to network terminal.In addition, except the component carrier that radio link failure takes place, radio resource control information can transmit at a component carrier wherein of a plurality of component carriers.
Illustrate the concept of flow process 90.If client has two component carriers, and when detecting radio link failure on the component carrier therein (first component carrier), client transmits indication at another component carrier (second component carrier wave) with the fair amount of uplink has radio link failure to betide the radio resource control information of first component carrier to network terminal.
On the other hand, for handling the Radio Link Failure of client.Please refer to Figure 10, Figure 10 is the schematic diagram of one embodiment of the invention one flow process 10.Flow process 10 is used for a network terminal of a wireless telecommunication system, is used for handling the radio link failure of client.Flow process 10 can be compiled as procedure code 214, and includes following steps:
Step 100: beginning.
Step 102: receive and be used to refer at least one radio link failure at a radio resource control information of at least one component carrier of a plurality of component carriers from client.
Step 104: according to this radio resource control information, resetting has at least one component carrier of radio link failure.
Step 106: finish.
According to flow process 10, when network terminal received the radio resource control information of indicating the component carrier that the radio link failure generation is arranged, network terminal can be reset and have the component carrier of radio link failure.For instance, client transmits indication by the second component carrier wave has radio link failure to betide the radio resource control information of first component carrier to network terminal.When network terminal receives radio resource control information, network terminal first component carrier of can resetting, and according to this radio resource control information, remove the related setting of first component carrier.
It should be noted that the embodiment of the invention except being the target with the component carrier, can also the residential quarter be that target is used for the flow process shown in the 3rd～10 figure and device, and detailed description please refer to above-mentioned, does not repeat them here.In addition, above-mentioned institute comprises the step of advising in steps, can realize by modes such as hardware, firmware (be the combination of hardware unit and computer instruction, the data in the hardware unit are read-only software data) or electronic systems.Hardware can comprise simulation, numeral and hybrid circuit (being microcircuit, microchip or silicon).Electronic system can comprise system single chip (System On Chip, SOC), system in package (System InPackage, Sip), computer module (Computer On Module, COM) and communication device 20.
In sum, the embodiment of the invention is provided for method and the device that a plurality of targets (as component carrier or residential quarter) are used for handling radio link failure.
The above only is preferred embodiment of the present invention, and all equalizations of doing according to claim scope of the present invention change and modify, and all should belong to covering scope of the present invention.
Claims (9)
1. method of handling radio link failure is used for a communication device of a wireless telecommunication system, and this method includes:
A plurality of component carriers or residential quarter are carried out the wireless issue detection; And
When these a plurality of component carriers or residential quarter detect a plurality of wireless issue, open the timer that the beginning is used for detecting the radio link failure of these a plurality of component carriers or residential quarter, wherein when when these a plurality of component carriers or residential quarter detect a plurality of wireless issue, the step that opens this timer of the radio link failure that the beginning is used for detecting these a plurality of component carriers or residential quarter includes:
When one first component carrier in these a plurality of component carriers or residential quarter or residential quarter detect a radio link failure, open the first timer that the beginning is used for detecting the radio link failure of this first component carrier or residential quarter; And
When the component carrier except this first component carrier or residential quarter or residential quarter detect radio link failure, open the second timer that the beginning is used for detecting the radio link failure of component carrier except this first component carrier or residential quarter or residential quarter; And
When at least one component carrier or residential quarter detect radio link failure, transmission is used to refer at least one radio link failure at least one component carrier of these a plurality of component carriers or residential quarter or radio resource control information to a network terminal of residential quarter, and wherein this radio resource control information is to transmit in a component carrier or residential quarter except detecting radio link failure.
2. method according to claim 1 is wherein carried out wireless issue to these a plurality of component carriers or residential quarter and is detected and include when when these a plurality of component carriers or residential quarter detect this a plurality of wireless issue, produces a plurality of continuous asynchronous indications.
3. method according to claim 2, wherein when when these a plurality of component carriers or residential quarter detect this a plurality of wireless issue, open this timer that the beginning is used for detecting the radio link failure of these a plurality of component carriers or residential quarter, include according to this a plurality of continuous asynchronous indications, open this timer that begins.
4. method according to claim 1 also includes:
When this timer expiration, judge in these a plurality of component carriers or residential quarter to have radio link failure.
5. method according to claim 4 also includes:
Carry out Radio Resource control and link reconstruction algorithm, be used for rebuilding at least one wireless link of these a plurality of component carriers or residential quarter.
6. method according to claim 2 also includes:
When a wireless issue that is detected is wherein repaired, produce a plurality of continuous synchronization indications; And
According to these a plurality of continuous and synchronous indications, stop this timer.
7. method of handling radio link failure is used for a communication device of a wireless telecommunication system, and this communication device includes a network terminal, and this method includes:
A plurality of component carriers or residential quarter are carried out the radio link failure detection; And
According to a testing result, transmit be used to refer at least one radio link failure at a radio resource control information of at least one component carrier of these a plurality of component carriers or residential quarter or residential quarter to this network terminal; Wherein according to a testing result, transmission is used to refer to this at least one radio link failure and includes the fair amount of a uplink that receives by a component carrier or residential quarter from these a plurality of component carriers or residential quarter at this at least one component carrier of these a plurality of component carriers or residential quarter or this radio resource control information to this network terminal of residential quarter, transmits this radio resource control information at this component carrier or residential quarter.
8. method according to claim 7, wherein receive from this communication device in this network terminal and be used to refer at least one radio link failure after a radio resource control information of at least one component carrier of a plurality of component carriers or residential quarter or residential quarter, this network terminal is according to this radio resource control information, at least one component carrier of this of this communication device of resetting or residential quarter.
9. method according to claim 8, wherein this network terminal is according to this radio resource control information, and at least one component carrier of this of this communication device of resetting or residential quarter include and remove should at least one component carrier or the setting of residential quarter.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US16232809P | 2009-03-22 | 2009-03-22 | |
| US61/162,328 | 2009-03-22 | ||
| US12/690,930 | 2010-01-21 | ||
| US12/690,930 US8700029B2 (en) | 2009-03-22 | 2010-01-21 | Method of handling radio link failure detection in a wireless communication system and related communication device |
| US12/728,270 | 2010-03-21 | ||
| US12/728,270 US20100240359A1 (en) | 2009-03-22 | 2010-03-21 | Method of Handling Radio link Failure in a Wireless Communication System and Related Communication Device |
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| Publication Number | Publication Date |
|---|---|
| CN101848473A CN101848473A (en) | 2010-09-29 |
| CN101848473B true CN101848473B (en) | 2013-08-14 |
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| CN 201010149640 Active CN101848473B (en) | 2009-03-22 | 2010-03-22 | Method of handling radio link failure in a wireless communication system and related communication device |
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| CN (1) | CN101848473B (en) |
| DE (1) | DE202010017523U1 (en) |
| TW (1) | TWI439147B (en) |
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| WO2013163902A1 (en) * | 2012-05-04 | 2013-11-07 | 华为技术有限公司 | Radio link management method, user equipment and base station |
| US9450809B2 (en) * | 2013-10-28 | 2016-09-20 | Industrial Technology Research Institute | Method of handling uplink transmission and related communication device |
| TWI556663B (en) | 2014-12-25 | 2016-11-01 | 宏達國際電子股份有限公司 | Device and method of handling failure in communications with multiple base stations |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1903824A2 (en) * | 2006-09-21 | 2008-03-26 | Innovative Sonic Limited | Method for detecting radio link failure in wireless communications system and related apparatus |
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2010
- 2010-03-22 CN CN 201010149640 patent/CN101848473B/en active Active
- 2010-03-22 TW TW99108321A patent/TWI439147B/en active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1903824A2 (en) * | 2006-09-21 | 2008-03-26 | Innovative Sonic Limited | Method for detecting radio link failure in wireless communications system and related apparatus |
Non-Patent Citations (1)
| Title |
|---|
| NEC.Text Proposal to TS 36.331 about RLF procedure.《3GPP TSG-RAN WG2#59bis，R2-074393》.2007,第1-2页，第5.2.x.3节. * |
Also Published As
| Publication number | Publication date |
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| CN101848473A (en) | 2010-09-29 |
| TWI439147B (en) | 2014-05-21 |
| TW201108781A (en) | 2011-03-01 |
| DE202010017523U1 (en) | 2011-12-21 |
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