CN102201888B - Method and device for detecting multi-carrier synchronization - Google Patents
Method and device for detecting multi-carrier synchronization Download PDFInfo
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Abstract
The invention discloses a method and device for detecting multi-carrier synchronization. The method comprises the following steps: using a user terminal to detect whether CRC (cyclic redundancy check) information of a downlink physical channel of each carrier in the multiple carriers is correct; and when the CRC information of the downlink physical channel of any carrier in the multiple carriers is correct, determining the multi-carrier synchronization. According to the invention, radio link failures can be avoided.
Description
Technical field
The present invention relates to the communications field, a kind of method detected in particular to multi-carrier synchronization and device.
Background technology
In order to meet the growing demand to high-speed upward grouped data business of user, also in order to access (High Speed Downlink PacketAccess better with down high speed downlink grouped, referred to as HSDPA) technology matches the support provided higher quality of service, third generation partner program (3rd Generation Partnership Project, referred to as 3GPP) introduce based on Wideband Code Division Multiple Access (WCDMA) access (WidebandCode Division Multiple Access at Rel6 and Rel7 respectively, referred to as WCDMA) and TD SDMA (Time Division Synchronous Code Division Multiple Access, be called for short TD-SCDMA) high speed uplink packet access (High Speed Uplink PacketAccess, be called for short HSUPA) technology, or be referred to as up enhancing (Enhanced Uplink) or strengthen dedicated channel (Enhanced Dedicated Channel, referred to as E-DCH) technology.
Physical layer carrying aspect, HSUPA introduces new Physical Shared Channel enhancing-physical uplink channel (Enhanced Physical Uplink Channel, referred to as E-PUCH) and carries corresponding transmission channel E-DCII.Simultaneously, in order to complete corresponding control, scheduling and feedback, HSUPA introduces E-RUCCH, E-DCH insertion authority channel (E-DCH Access Grant Channel in physical layer, referred to as E-AGCH) and E-DCH HARQ indicating channel (E-DCH Hybrid ARQ Indicator Channel, referred to as E-HICH) three physical control channels.
The E-RUCCH UE be used under CELL DCH state asks when not having resource authorization to authorize to carry out transfer of data, its transmission means is the access way of preemptive type, process and Physical Random Access Channel (Physical Random Access Channel, referred to as PRACH) identical, and physical code channel can be shared with PRACH.For current subscriber equipment (the User Equipment having mandate, referred to as UE, also can by schedule information (SI) current for UE the multiplexing media access control layer entity at E-PUCH protocol Data Unit (MAC-es Protocol data unit, referred to as MAC-es PDU) in pass to Node B to reach the object of dispatch request.Schedule information (SI) comprises: the information such as power headroom, path loss, buffer size.
E-AGCH is used for Node B and transmits scheduling resource authorization message to UE, it comprises following physical control information: power grants information, time slot authorization message, code channel authorization message, interim user network identity, the number of up-enhancing control channel (Enhanced-Uplink ControlChannel, referred to as E-UCCH), resource continuous persond eixis, E-DCH cyclic sequence number, the instruction of E-HICH channel etc.
E-HICH is used for Node B feeds back acknowledge character/non-acknowledgement character (Acknowledgement/Non-Acknowledgement from each transmission block to UE, be called for short ACK/NACK) information, in order to reduce physical channel expense, E-HICH have employed the mode of secondary spread spectrum, can be implemented on an original physical code channel and carries maximum 80 signature users.User's signature sequence associates with the resource dynamic of distribution simultaneously, can meet the demand supporting that Large Volume Data user is simultaneously online.
In HSUPA, the descending synchronous/asynchronous mechanism of UE is based on primitive CPHY-Sync-IND and CPHY-Out-of-Sync-IND.When there being following special physical channel (Dedicated PhysicalChannel, referred to as DPCH), descending DPCH can be used as the judgement reference of In-Sync, when not with DPCH, E-AGCH or other high-speed slender body theory (High Speed Downlink Packet Access, referred to as HSDAP) down channel as High-Speed Shared Control Channel (High Speed Shared Control Channel, referred to as HS-SCCH), High Speed-Physical DSCH Downlink Shared Channel (High Speed PhysicalDownlink Shared Channel, referred to as HS-PDSCH) etc. can be used as the judgement reference of In-Sync, when UE receives a cyclic redundancy check (CRC) (Cyclic Redundancy Check on above-mentioned channel, referred to as CRC) correct bag time, can think triggering In-Sync, if triggering Out of Sync reports when not receiving the correct bag of CRC on above-mentioned channel in network side configurator timing window by UE, UE starts timer T313 after receiving N313 out of sync continuously, if do not receive N continuous 315 in sync before timer expiry, so triggering Radio Link Failure event is carried out cell update by UE.
In order to improve throughput and the peak rate of system further, multicarrier is introduced HSUPA by 3GPP, this technology can carry out HSUPA transmission on multiple carrier waves of a community (N number of carrier wave), and the up N that can obtain is doubly to the throughput of single carrier HSUPA on the one hand; Also possibility N doubly improves the peak rate of single terminal on the other hand.
But, in above-mentioned correlation technique, when the E-AGCH that user terminal does not carry the carrier wave of data in multicarrier carries out CRC check, incorrect owing to not carrying the CRC check that data must cause, thus cause reporting Out Of Sync message to add up with flip-flop number, therefore, even if the carrier wave of other carrying data is in synchronous regime in multicarrier, user terminal also may report more than N313 Out Of Sync message, thus causes base station to judge multi-carrier HSUPA step-out.That is, in multi-carrier synchronization process, due to certain carrier wave (such as the above-mentioned carrier wave the not carrying transmission data) step-out in multicarrier, thus lead to errors and determine multicarrier step-out, and then cause Radio Link Failure.
Summary of the invention
For in multi-carrier HSUPA, cause the problem of the step-out of this multicarrier due to the step-out of certain carrier wave in multicarrier and propose the present invention, for this reason, main purpose of the present invention is the method and the device that provide a kind of multicarrier detection of loss of mains, to solve the problem.
To achieve these goals, according to an aspect of the present invention, a kind of method that multi-carrier synchronization detects is provided.
The method that multi-carrier synchronization according to the present invention detects comprises: whether the CRC check information that user terminal detects the down physical channel of each carrier wave in multicarrier is correct; And when the CRC check information of the down physical channel of carrier wave any in multicarrier is correct, determine multi-carrier synchronization.
Further, the method that above-mentioned multi-carrier synchronization detects also comprises: when the CRC check information of the down physical channel of carrier wave any in multicarrier is correct, restarts the synchro timer of other carrier wave except the correct carrier wave of CRC check information in multicarrier.
Further, the method that above-mentioned multi-carrier synchronization detects also comprises: when the CRC check information of the down physical channel of carrier wave any in multicarrier is correct, the physical layer of user terminal reports synchronous indication information to high level.
Further, the method that above-mentioned multi-carrier synchronization detects also comprises: when the CRC check information of the down physical channel of each carrier wave in multicarrier is all incorrect, determine multicarrier step-out.
Further, the method that above-mentioned multi-carrier synchronization detects also comprises: when the CRC check information of the down physical channel of each carrier wave in multicarrier is all incorrect, the physical layer of user terminal reports step-out indication information to high level.
Further, down physical channel can be applied to the channel in one of following multicarrier: E-DCH insertion authority channel, High-Speed Shared Control Channel, high-speed physical downlink shared channel (HS-PDSCH).
To achieve these goals, according to a further aspect in the invention, the device that a kind of multi-carrier synchronization detects is provided.
Whether the device detected according to multi-carrier synchronization of the present invention comprises: detection module, correct for the CRC check information detecting each carrier wave in multicarrier; And first determination module, when the CRC check information for the down physical channel when carrier wave any in multicarrier is correct, determine multi-carrier synchronization.
Further, the device that above-mentioned multi-carrier synchronization detects also comprises: multiple synchro timer, corresponding with each carrier wave in multicarrier; Start module, when the CRC check information for the down physical channel when carrier wave any in multicarrier is correct, start the synchro timer of other carrier wave except the correct carrier wave of CRC check information in multiple synchro timer.
Further, the device that above-mentioned multi-carrier synchronization detects also comprises: the second determination module, when the CRC check information for the down physical channel when each carrier wave in multicarrier is all incorrect, determines multicarrier step-out.
Further, the device that above-mentioned multi-carrier synchronization detects also comprises: the first reporting module, for when the first determination module determination multi-carrier synchronization, reports synchronous indication information to high level.Second reporting module, for when the second determination module determination multicarrier step-out, reports step-out indication information to high level.
Pass through the present invention, whether the CRC information that user terminal detects the down physical channel of each carrier wave in multicarrier is correct, when the CRC check information of the down physical channel of carrier wave any in multicarrier is correct, determine multi-carrier synchronization, solve the step-out of certain carrier wave in multicarrier and lead to errors and determine the problem of multicarrier step-out, avoiding Radio Link Failure.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart of the multi-carrier synchronization detection method according to the embodiment of the present invention;
Fig. 2 is the flow chart of the synchronization detecting method of multi-carrier HSUPA according to the preferred embodiment of the invention;
Fig. 3 is the structured flowchart of the device detected according to the multi-carrier synchronization of the embodiment of the present invention; And
Fig. 4 is the structured flowchart of the device of multi-carrier synchronization detection according to the preferred embodiment of the invention.
Embodiment
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
According to embodiments of the invention, provide a kind of method that multi-carrier synchronization detects.Fig. 1 is the flow chart of the method detected according to the multi-carrier synchronization of the embodiment of the present invention, and as shown in Figure 1, the method comprises following step S102 to step S104.
Step S102, whether the cyclic redundancy check (CRC) check information that user terminal detects the down physical channel of each carrier wave in multicarrier is correct.
Step S104, when the CRC check information of the down physical channel of carrier wave any in multicarrier is correct, determines described multi-carrier synchronization.
In step S104, as long as the CRC check information of the down physical channel of any carrier wave is correct in multicarrier, just determine multi-carrier synchronization.Like this, in multi-carrier synchronization process, as long as there is a carrier synchronization, even if all the other carrier waves cause the CRC check information on this carrier wave E-AGCH channel incorrect owing to not carrying transmission data in multicarrier, even if user terminal to send up Out Of Sync message adds up with flip-flop number, correct owing to working as the CRC check information of any carrier wave in multicarrier, just multi-carrier synchronization can be determined, namely, in multi-carrier synchronization process, as long as owing to there being a carrier synchronization, even if all the other carrier waves (not carrying transmission data carrier) step-out also can not cause base station false judgment multi-carrier HSUPA step-out.Therefore, by the present embodiment, the step-out of certain carrier wave in multicarrier can be solved and lead to errors and determine the problem of multicarrier step-out, and then avoiding Radio Link Failure.
Preferably, when the CRC check information of the down physical channel of carrier wave any in multicarrier is correct, restart the synchro timer of other carrier wave except the correct carrier wave of CRC check information in multicarrier.
By restarting the operation of the timer of other carrier wave in multicarrier, even if other carrier wave causes the CRC check information on this carrier wave E-AGCH channel incorrect owing to not carrying transmission data, the synchro timer of this carrier wave also can not be overtime because the incorrect situation of CRC being detected.Like this, the interaction success between user terminal and base station can be ensured.
Preferably, when the CRC check information of the down physical channel of each carrier wave in multicarrier is all incorrect, this multicarrier step-out is determined.
Only have when the CRC check information of each carrier wave in multicarrier is all incorrect, just determine this multicarrier step-out.Like this, even if some carrier waves cause the CRC check information on this carrier wave E-AGCH channel incorrect owing to not carrying transmission data in multicarrier, even if user terminal reports Out Of Sync message to add up with flip-flop number, owing to only having, the CRC check information when each carrier wave is all incorrect could determine multicarrier step-out, namely in multi-carrier synchronization process, because certain carrier wave step-out can not cause base station to judge multi-carrier HSUPA step-out.Therefore, the step-out of certain carrier wave in multicarrier can be solved and lead to errors and determine the problem of multicarrier step-out, and then avoiding Radio Link Failure.
Preferably, when the CRC check information of the down physical channel of each carrier wave in multicarrier is all incorrect, the physical layer of user terminal reports step-out indication information Out ofSync to high level.When the CRC check information of carrier wave any in multicarrier is correct, the physical layer of user terminal reports synchronous indication information In-Sync to high level.
Preferably, down physical channel can be applied to the channel in one of following multicarrier: E-AGCH, High-Speed Shared Control Channel (High Speed Shared Control Channel, referred to as HS-SCCH), High Speed-Physical DSCH Downlink Shared Channel (High Speed PhysicalDownlink Shared Channel, referred to as HS-PDSCH).
Be described in detail below in conjunction with the implementation procedure of preferred embodiments and drawings to above-described embodiment.
Fig. 2 is the flow chart of the method for the synchronous detection of multi-carrier HSUPA according to the preferred embodiment of the invention, comprises following step S202 to step S216.
Step S202, radio network controller (Radio Network Controller, referred to as RNC) by Iub message order such as wireless link/reshuffle etc., HSUPA carrier resource pond is configured to NodeB and assigned work carrier wave, the response of NodeB feedback, to RNC, wherein carries the carrier resource distributing to the actual use of UE.
The carrier resource that step S204, RNC are set up/reshuffle etc. by idle message as RB by UE uses informs to UE.
Step S206, terminal is carried out the access procedure of HSUPA by E-RUCCH and schedule information is sent to NodeB on operating carriers.
Step S208, the carrier resource selecting UE to send data reality in the carrier resource that NodeB distributes for UE in step S202 according to schedule information to use, and respectively UE is sent on corresponding carrier wave resource authorization message notice that data reality uses to UE by the absolute grant information that the E-AGCH that each carrier wave is corresponding carries.
Step S210, the carrier wave that terminal is distributed at network side detects E-AGCH.
Step S212, the carrier wave that terminal is distributed at network side checks that whether CRC check information is correct.If correctly forward step S214 to, otherwise forward step S216 to.
Step S214, terminal physical layer reports In-Sync to high level and restarts the synchro timer of all carrier waves.
In the preferred embodiment, except the synchro timer of restarting this carrier wave, also the synchro timer of other all carrier wave will be restarted, even if also at its synchro timer of the carrier wave not having data to send time-out also can not would not trigger and report Out of Sync because the incorrect situation of CRC being detected always like this when terminal detects that CRC is correct on the E-AGCH channel of a carrier wave.
Simultaneously also show in multi-carrier HSUPA system in the present invention, if detect the down-going synchronous of a carrier wave then can think other carrier waves descending be also synchronous.
Step S216, the designated carrier that terminal is distributed at network side continues detect E-AGCH and check CRC check information, namely forwards step S210 to.
In the preferred embodiment, if synchro timer exceedes the time window of network side configuration, triggering terminal physical layer reports Out of Sync to high level.
This preferred embodiment also shows in multi-carrier HSUPA system, only have and report Out of Sync when the E-AGCH of all carrier waves just triggers when network side configuration window does not all receive the correct bag of CRC and synchro timer time-out for a long time, this synchro timer is restarted after transmission Out of Sync.
Those skilled in the art are to be understood that, the synchronization detecting method of the multi-carrier HSUPA shown in Fig. 2 is the special case for illustrating cited by the solution of the present invention, be not intended to limit the present invention, also should understand simultaneously, when carrier wave exists the down channel such as HS-SCCH or HS-PDSCH or descending DPCH channel, be suitable for this equally with synchronous testing mechanism.
According to embodiments of the invention, additionally provide the device that a kind of multi-carrier synchronization detects, this device may be used for the method realizing the detection of above-mentioned multi-carrier synchronization.Fig. 3 is the structured flowchart of the device detected according to the multi-carrier synchronization of the embodiment of the present invention, as shown in Figure 3, comprises detection module 32 and the first determination module 34.Below said structure is described in detail.
Detection module 32, whether correct for the CRC check information detecting the down physical channel of each carrier wave in multicarrier; First determination module 34, is connected to detection module 32, when the CRC check information for the down physical channel when carrier wave any in the multicarrier that detection module 32 detects is correct, determines this multi-carrier synchronization.
When above-mentioned first determination module 34 determines multi-carrier synchronization, as long as the CRC check information of the down physical channel of any carrier wave is correct in multicarrier, just determine multi-carrier synchronization.Like this, in multi-carrier synchronization process, as long as there is a carrier synchronization, even if all the other carrier waves cause the CRC check information on this carrier wave E-AGCH channel incorrect owing to not carrying transmission data in multicarrier, even if user terminal to send up Out Of Sync message adds up with flip-flop number, correct owing to working as the CRC check information of the down physical channel of any carrier wave in multicarrier, just multi-carrier synchronization can be determined, namely, in multi-carrier synchronization process, as long as owing to there being a carrier synchronization, even if all the other carrier waves (not carrying transmission data carrier) step-out also can not cause base station false judgment multi-carrier HSUPA step-out.Therefore, by the present embodiment, the step-out of certain carrier wave in multicarrier can be solved and lead to errors and determine the problem of multicarrier step-out, and then avoiding Radio Link Failure.
Fig. 4 is the structured flowchart of the device of multi-carrier synchronization detection according to the preferred embodiment of the invention.
Preferably, the device of above-mentioned multicarrier detection of loss of mains also comprises: the second determination module 42, multiple synchro timer 44, starts module 46, first reporting module 48 and the second reporting module 49.Below said structure is described in detail.
Second determination module 42, is connected to detection module 32, for when the CRC check information of the down physical channel of each carrier wave is all incorrect in the multicarrier that detection module 32 detects, determines this multicarrier step-out.
Only have when the CRC check information of the down physical channel of each carrier wave in multicarrier is all incorrect, just determine this multicarrier step-out.Like this, even if some carrier waves cause the CRC check information on this carrier wave E-AGCH channel incorrect owing to not carrying transmission data in multicarrier, even if user terminal reports Out Of Sync message to add up with flip-flop number, owing to only having, the CRC check information when each carrier wave is all incorrect could determine multicarrier step-out, namely in multi-carrier synchronization process, because certain carrier wave step-out can not cause base station to judge multi-carrier HSUPA step-out.Therefore, by the present embodiment, the step-out of certain carrier wave in multicarrier can be solved and lead to errors and determine the problem of multicarrier step-out, and then avoiding Radio Link Failure.
Multiple synchro timer 44, corresponding with each carrier wave in multicarrier; Start module 46, be connected to detection module 32 and multiple synchro timer 44, when CRC check information for the down physical channel when carrier wave any in the multicarrier that detection module 32 detects is correct, start the synchro timer of other carrier wave except the correct carrier wave of CRC check information in multiple synchro timer 44.
The operation of the timer of other carrier wave in multicarrier is restarted by starting module 46, even if other carrier wave causes the CRC check information on this carrier wave E-AGCH channel incorrect owing to not carrying transmission data, the synchro timer of this carrier wave also can not be overtime because the incorrect situation of CRC being detected.Like this, the interaction success between user terminal and base station can be ensured.
First reporting module 48, is connected to the first determination module 34, for when the first determination module 34 determines multi-carrier synchronization, reports In-Sync to high level.Second reporting module 49, is connected to the second determination module 42, for when the second determination module 42 determines multicarrier step-out, reports Out of Sync to high level.
It should be noted that, the device of the multicarrier detection of loss of mains described in device embodiment corresponds to above-mentioned embodiment of the method, and its concrete implementation procedure carried out detailed description in embodiment of the method, did not repeat them here.
In sum, according to the abovementioned embodiments of the present invention, provide method and the device of a kind of multi-carrier synchronization detection, whether the CRC check information that user terminal detects the down physical channel of each carrier wave in multicarrier is correct; When the CRC check information of the down physical channel of carrier wave any in multicarrier is correct, determine multi-carrier synchronization, solve the step-out of certain carrier wave in multicarrier and lead to errors and determine the problem of multicarrier step-out, and then avoiding Radio Link Failure.
Obviously, those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on network that multiple calculation element forms, alternatively, they can realize with the executable program code of calculation element, thus, they can be stored and be performed by calculation element in the storage device, or they are made into each integrated circuit modules respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a method for multi-carrier synchronization detection, is characterized in that, comprising:
Whether the cyclic redundancy check (CRC) check information that user terminal detects the down physical channel of each carrier wave in multicarrier is correct; And
When the CRC check information of the down physical channel of carrier wave any in described multicarrier is correct, determine described multi-carrier synchronization;
When the CRC check information of the down physical channel of each carrier wave in described multicarrier is all incorrect, determine described multicarrier step-out.
2. method according to claim 1, is characterized in that, also comprises:
When the CRC check information of the down physical channel of carrier wave any in described multicarrier is correct, restart the synchro timer of other carrier wave except the correct carrier wave of CRC check information in described multicarrier.
3. method according to claim 1, is characterized in that, also comprises:
When the CRC check information of the down physical channel of carrier wave any in described multicarrier is correct, the physical layer of described user terminal reports synchronous indication information to high level.
4. method according to claim 1, is characterized in that, also comprises:
When the CRC check information of the down physical channel of each carrier wave in described multicarrier is all incorrect, the physical layer of described user terminal reports step-out indication information to high level.
5. method according to any one of claim 1 to 4, is characterized in that, described down physical channel can be applied to the channel in one of following described multicarrier:
Strengthen dedicated channel E-DCH insertion authority channel, High-Speed Shared Control Channel, high-speed physical downlink shared channel (HS-PDSCH).
6. a device for multi-carrier synchronization detection, is characterized in that, comprising:
Detection module, whether correct for the CRC check information detecting each carrier wave in multicarrier; And
First determination module, when the CRC check information for the down physical channel when carrier wave any in described multicarrier is correct, determines described multi-carrier synchronization;
Second determination module, when the CRC check information for the down physical channel when each carrier wave in described multicarrier is all incorrect, determines described multicarrier step-out.
7. device according to claim 6, is characterized in that, also comprises:
Multiple synchro timer, corresponding with each carrier wave in described multicarrier;
Start module, when the CRC check information for the down physical channel when carrier wave any in described multicarrier is correct, start the synchro timer of other carrier wave except the correct carrier wave of CRC check information in described multiple synchro timer.
8. device according to claim 6, is characterized in that, also comprises:
First reporting module, for when described first determination module determines described multi-carrier synchronization, reports synchronous indication information to high level;
Second reporting module, for when described second determination module determines described multicarrier step-out, reports step-out indication information to high level.
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| CN102843761A (en) * | 2011-06-21 | 2012-12-26 | 中兴通讯股份有限公司 | Multi-carrier terminal in-sync regulating and out-of-sync judging method and corresponding devices and systems |
| CN103313376A (en) * | 2012-03-14 | 2013-09-18 | 华为技术有限公司 | Communication method, user equipment and network side equipment |
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| WO2006086359A2 (en) * | 2005-02-09 | 2006-08-17 | Interdigital Technology Corporation | Method and system for recognizing radio link failures associated with hsupa and hsdpa channels |
| CN101626267A (en) * | 2008-07-11 | 2010-01-13 | 大唐移动通信设备有限公司 | Method and device for synchronous detection |
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