CN101478817B - Method for establishing fast uplink synchronization under non-CELL_DCH status - Google Patents
Method for establishing fast uplink synchronization under non-CELL_DCH status Download PDFInfo
- Publication number
- CN101478817B CN101478817B CN2008100650112A CN200810065011A CN101478817B CN 101478817 B CN101478817 B CN 101478817B CN 2008100650112 A CN2008100650112 A CN 2008100650112A CN 200810065011 A CN200810065011 A CN 200810065011A CN 101478817 B CN101478817 B CN 101478817B
- Authority
- CN
- China
- Prior art keywords
- channel
- subscriber equipment
- synchronous
- base station
- signaling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims abstract description 73
- 230000001360 synchronised effect Effects 0.000 claims abstract description 131
- 230000011664 signaling Effects 0.000 claims abstract description 76
- 230000005540 biological transmission Effects 0.000 claims abstract description 69
- 238000012790 confirmation Methods 0.000 claims abstract description 34
- 230000008569 process Effects 0.000 claims abstract description 22
- 230000004044 response Effects 0.000 claims abstract description 4
- 238000012546 transfer Methods 0.000 description 9
- 230000007246 mechanism Effects 0.000 description 5
- 230000002708 enhancing effect Effects 0.000 description 4
- 230000000977 initiatory effect Effects 0.000 description 3
- 230000001174 ascending effect Effects 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008713 feedback mechanism Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Images
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
本发明提供了一种在非小区专用信道状态下建立快速上行同步的方法，该方法包括以下步骤：步骤S702，在用户设备的高速-下行共享信道传输停顿了一段停顿时间后恢复传输前，基站通知用户设备建立上行同步；以及步骤S704，响应于基站的通知，用户设备判断自身处于失步状态时，发起上行同步过程，同步完成后向基站发送确认信令；用户设备判断自身处于同步状态时，直接向基站回复同步确认信令。在基站确认用户设备处于同步状态后，对用户设备恢复高速-下行共享信道传输。本发明可以适应CELL FACH状态下业务间歇性的特点，使得业务中断一段时间后恢复传输前可以快速的建立上行同步而不影响后续的业务传输。
The present invention provides a method for establishing fast uplink synchronization in the state of a non-cell dedicated channel. The method includes the following steps: Step S702, before resuming transmission after the high-speed-downlink shared channel transmission of the user equipment pauses for a period of time, the base station Informing the user equipment to establish uplink synchronization; and step S704, in response to the notification from the base station, when the user equipment judges that it is in an out-of-synchronization state, it initiates an uplink synchronization process, and sends an acknowledgment signaling to the base station after the synchronization is completed; when the user equipment judges that it is in a synchronization state , and directly reply the synchronization confirmation signaling to the base station. After the base station confirms that the user equipment is in a synchronous state, the high-speed-downlink shared channel transmission is resumed for the user equipment. The present invention can adapt to the intermittent characteristics of the service in the CELL FACH state, so that the uplink synchronization can be quickly established before resuming the transmission after the service is interrupted for a period of time without affecting the subsequent service transmission.
Description
Technical field
The present invention relates to field of wireless communication, relate to more specifically and set up the synchronous method of fast uplink under a kind of non-CELL _ DCH status.
Background technology
3GPP (3G (Third Generation) Moblie partnership) has accomplished the standardization effort that CELL_FACH (sub-district _ forward access channel) state strengthens in WCDMA (WCDMA access) system at present.The CELL_FACH state strengthens through introducing the packet data transmission performance that HS-DSCH (high speed descending sharing channel) transmission channel strengthens this state at the CELL_FACH state, makes it obtain less packet transfer delay and higher transmission rate.This mechanism also has been incorporated into paging and the transfer of data under URA_PCH (UTRAN Acceditation Area _ PCH) and CELL_PCH (cell _ paging channel) state.
In the version before the 3GPP Re1-7; The HS-DSCH channel only uses under CELL_DCH (CELL _ DCH) state; Network side disposes one group of HS-SCCH (at a high speed-shared control channel) channel and HS-SICH (at a high speed-share indicating channel) channel and H-RNTI (high speed descending sharing channel-Radio Network Temporary Identifier) for UE in advance when setting up the relevant radio bearer of descending HS-DSCH (at a high speed-DSCH Downlink Shared Channel) for UE.This group HS-SCCH/HS-SICH channel is that a plurality of UE share, and H-RNTI is the UE special use, and UE judges through the H-RNTI on the identification HS-SCCH whether this transmission points to oneself.In case detected the HS-SCCH channel that points to oneself; Read the information on the HS-SCCH channel; The last concrete signaling content of HS-SCCH is as shown in Figure 1, and wherein code channel and gap information indication UE is about to HS-PDSCH (high speed down sharing physical channel) channel resource that receives; Modulation system and transport block length indication transformat; The H-RNTI information that contains UE in the cyclic redundancy check field.Behind predetermined timing time nHS-SCCH, UE receives data on the HS-PDSCH of appointment channel, and (mixing automatic repeat requests) feeds back and CQI (channel quality indication) report behind the timing nHS-SICH of appointment, on the HS-SICH channel, to carry out HARQ.With the TD-SCDMA system is example, and the sketch map that a HS-DSCH under the CELL_DCH state sends is as shown in Figure 2.
In the version before the Re1-7, the transfer of data under the CELL_FACH state is based upon on the common signal channel, and upstream data transmits on RACH (RACH) transmission channel, and is mapped on PRACH (Physical Random Access Channel) physical channel; Downlink data transmits on FACH (forward access channel) transmission channel, and is mapped on S-CCPCH (Secondary Common Control Physical Channel) physical channel.These configuration of common channel information are all broadcasted in system broadcast message, and UE selects suitable channel to send according to set rule or receives.
CELL_FACH state after the enhancing, up channel also are based on traditional RACH/PRACH channel, and under be about to through the HS-DSCH/HS-PDSCH Channel Transmission.Information such as HS-SCCH channel, H-RNTI are broadcasted in cell system information, because these H-RNTI are shared by the UE in the sub-district, thereby are called public H-RNTI.When UE initiates connection request from Idle state, use the public H-RNTI in the cell system message to intercept the HS-SCCH channel.After UE gets into connection status, when RNC (radio network controller) disposes DTCH/DCCH (Dedicated Traffic Channel/DCCH) channel for UE, the H-RNTI of configure dedicated.UE uses special-purpose H-RNTI to receive the HS-SCCH channel after possessing special-purpose H-RNTI, does not receive and do not re-use public H-RNTI.
The HS-DSCH transmission course is as shown in Figure 3 next time for the CELL_FACH of WCDMA system state, and different with the transmission under the CELL_DCH state is that UE need not carry out the HARQ feedback.In case UE detects HS-SCCH and goes up one's own public H-RNTI; To receive HS-PDSCH according to the indication on the HS-SCCH, and with the HS-PDSCH data decode correctly that the back identifies through the UE in the RRC message or MAC-c (public medium access control) PDU (protocol Data Unit) in U-RNTI come recognition data whether to one's name.The WCDMA system is when designs C ELL_FACH enhancement techniques; Also once hoped to have a feedback channel at the CELL_FACH state; Can improve the data transmission efficiency of this state so greatly; But the feedback channel that is limited to existing system is a dedicated channel, introduces the operation principle that dedicated channel does not meet the CELL_FACH state; And too slow through PRACH channel feedback speed, can't satisfy actual needs, thereby final conclusion is not carry out up feedback.
Because a series of enhancement techniques of HS-DSCH itself (as based on the scheduling of Node B, HARQ etc.) can effectively improve data transfer rate, thereby will significantly improve signaling delay and the data transfer rate under CELL_FACH, CELL_PCH, the URA_PCH state behind the introducing HS-DSCH.TD-SCDMA (TDS-CDMA system) also considers to carry out similar enhancing.The HSDPA system of TD-SCDMA exists some different with WCDMA, and such as in the WCDMA system, uplink HARQ feedback channel is a dedicated channel, and in TD-SCDMA, this channel is a shared channel.Thereby when in the TD-SCDMA system, the CELL_FACH state being strengthened, can consider the HS-SICH channel is introduced this state.
TD-SCDMA is interference-limited synchro system.At the CELL_DCH state; UE is in synchronous hold mode all the time, and when carrying out the HS-DSCH transmission, this a pair of channel of HS-SCCH and HS-SICH itself can constitute closed power control and synchronous control system; With Fig. 4 explanation; Wherein 402 represent the HS-SCCH channel, on this channel, carried TPC (transmitting power control) order and SS (simultaneous bias) order, be respectively applied for the closed power control and the uplink synchronous control of up HS-SICH channel; 404 represent the HS-SICH channel, and the TPC order that it carries is used to control the transmitted power of HS-SCCH.At the CELL_DCH state, UE also has the special-purpose channel maintaining uplink Synchronization Control of following, and pauses even scheduling occurred, and HS-SICH can remain on synchronous regime by the uplink synchronous order of other channels of UE.In order to keep uplink synchronous, can not be referred to as uplink synchronous in the present invention and keep thresholding greater than certain thresholding to the transmission interval of the 2 subsynchronous bias orders (SS) of a UE; If greater than this thresholding, possibly cause the UE uplink loss to the interval of the SS of UE order.Uplink synchronous keep thresholding be subscriber terminal side keep uplink synchronous largest interval time of patient simultaneous bias order SS.Under the CELL_FACH state; Under the situation of scheduling continuously; The last simultaneous bias order SS of HS-SCCH can make the HS-SICH channel remain on synchronous regime; But if scheduling pauses (promptly; Temporary transient pause has appearred in business), and the dead time keep thresholding greater than uplink synchronous, HS-SICH can lose synchronously; HS-SICH emission meeting under the desynchronizing state produces larger interference to other user of sub-district, and the base station is accurate received signal also.Regain synchronously, must initiate the uplink synchronous process, in existing system, a uplink synchronous process of CELL_FACH state is as shown in Figure 5:
502:UE sends uplink synchronous code SYNC_UL at ascending pilot channel UpPCH;
After 504:Node B detects this synchronous code, on the FPACH of correspondence (physical access channel) channel, send confirmation, wherein be with uplink synchronous skew indication, open loop power information etc.;
506: after receiving that FPACH confirms, UE selects a PRACH channel, and utilize on the FPACH synchronously, power control information controls the emission of PRACH channel.
Ascending pilot channel is a competitive channel; UE generally will just possibly send success through repeatedly attempting; And the Transmission Time Interval (TTI) of PRACH channel is grown (generally being 20ms) in the existing synchronizing process; And this channel ends at RNC (non-Node B), thereby the long time of the general experience of process shown in Figure 5.If same method also is incorporated into the CELL_FACH state (that is: when service disconnection is recovered after a period of time to send HS-DSCH; UE also carries out same uplink synchronous process before sending HS-SICH); Can't guarantee so on HS-SICH, to send HARQ affirmation and CQI report according to set timing, the feedback that causes Node B can't discern HS-SICH to which time HS-DSCH is transmitted.And the PRACH channel ends at RNC, needs this UE of RNC indication Node B to set up completion synchronously, and is consuming time longer.The CELL_FACH state towards service feature be small data quantity, the business that discontinuity is arranged, professional like web browsing, E-mail, introduce feedback mechanism after, in transmission, have no progeny when recovering transmission, how setting up uplink synchronous fast is a urgent problem.
Therefore, need to set up the synchronous solution of fast uplink under a kind of non-cell private channel status, can solve the problem in the above-mentioned correlation technique.
Summary of the invention
Problem in view of the above; The present invention proposes a kind of non-sub-district specially _ with setting up the synchronous method of fast uplink under the channel status; This method is through setting up the synchronous method of fast uplink under the non-CELL _ DCH status; Solved the professional transmission problem that how uplink synchronous is set up fast when recovering transmission after a period of time of pausing, made that the HS-DSCH transmission after recovering is unaffected.
May further comprise the steps according to setting up the synchronous method of fast uplink under the non-CELL _ DCH status of the present invention: step S702; Before after the high speed-DSCH Downlink Shared Channel of subscriber equipment transmits the one period dead time of having paused, recovering transmission; The base station notifying user equipment is set up uplink synchronous; And step S704; Notice in response to the base station; Subscriber equipment judges when laying oneself open to desynchronizing state that initiation uplink synchronous process is replied the confirmation of synchronization signaling to the base station after the completion uplink synchronous; Subscriber equipment is judged when laying oneself open to synchronous regime, directly to base station answer confirmation of synchronization signaling.
Step 704 also comprises: after the base station confirms that subscriber equipment is in the uplink synchronous state, subscriber equipment is recovered the transmission of high speed-DSCH Downlink Shared Channel.
Wherein, the notifying user equipment step of setting up uplink synchronous in base station comprises that the base station sets up uplink synchronous through the physical layer signaling notifying user equipment.The content of physical layer signaling comprises the indication of synchronous foundation order and the high speed descending sharing channel-Radio Network Temporary Identifier of subscriber equipment at least.Physical layer signaling is carried on the high speed-shared control channel.
Wherein, the dead time keeps thresholding greater than uplink synchronous, promptly user equipment side keep uplink synchronous transmission intercal time of patient maximum simultaneous bias order.This uplink synchronous keeps thresholding by high level configuration or agreement agreement.
Step S704 may further comprise the steps: after subscriber equipment receives physical layer signaling; Need judge; When subscriber equipment is found oneself to be in desynchronizing state really; Send uplink synchronous code and receive the affirmation information on the physical access channel, after receiving confirmation, subscriber equipment utilizes physical layer control channel 1 to send the confirmation of synchronization signaling to the base station; When subscriber equipment is found to lay oneself open to synchronous regime, do not carry out the uplink synchronous process, directly send the confirmation of synchronization signaling to the base station through physical layer control channel 2.And after receiving the affirmation signaling, scheduling and the transmission to the high speed-DSCH Downlink Shared Channel of subscriber equipment recovered in the base station.
Wherein, physical layer control channel 1 using system Physical Random Access Channel resource transmission, the content of confirmation of synchronization signaling comprise that at least synchronous foundation accomplishes the relevant indication and the high speed descending sharing channel-Radio Network Temporary Identifier of subscriber equipment.
Wherein, physical layer control channel 2 uses at a high speed-shares the indicating channel transmission, and the control channel at the synchronization notice order place of this channel and base station is associated, and has definite timing relationship.
This method is through setting up the synchronous method of fast uplink under the non-CELL _ DCH status; Wherein set up order and confirmation of synchronization signaling synchronously and all pass through the physical layer signaling transmission; These signalings directly end at Node B; Thereby can reach best on the speed; Solved the problem that HS-DSCH transmission under the CELL_FACH state can fast quick-recovery transmission after pausing, made HS-DSCH transmission after the pause guarantee on HS-SICH, to send HARQ and confirm to report that what the feedback that makes Node B can discern HS-SICH was directed against is that which inferior HS-DSCH transmits with CQI according to set timing.
Other features and advantages of the present invention will be set forth in specification subsequently, and, partly from specification, become apparent, perhaps understand by embodiment of the present invention.The object of the invention can be realized through the structure that in the specification of being write, claims and accompanying drawing, is particularly pointed out and obtained with other advantages.
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 sketch map that illustrates according to the signaling content of the HS-SCCH channel of prior art;
Fig. 2 illustrates according to a HS-DSCH transmission under the CELL_DCH state in the TD-SCDMA system of prior art and the sketch map of receiving course;
Fig. 3 illustrates according to the CELL_FACH state transmission of HS-DSCH next time of prior art and the sketch map of receiving course;
Fig. 4 is HS-SCCH channel and the closed power control of HS-SICH channel and the sketch map of Synchronization Control that illustrates according to prior art;
Fig. 5 is a random access procedure sketch map that illustrates according to prior art;
Fig. 6 is the sketch map that illustrates according to inserting the signaling information of transmission in the enhanced uplink connecting system of prior art at random;
Fig. 7 is the flow chart that illustrates according to setting up the synchronous method of fast uplink under the non-CELL _ DCH status of the present invention;
Fig. 8 is a flow chart of setting up the synchronous method of fast uplink under the non-CELL _ DCH status that illustrates according to the embodiment of the invention;
Fig. 9 illustrates the sketch map of setting up the method for order according to the existing HS-SCCH Channel Transmission of the relevant utilization of embodiments of the invention synchronously; And
Figure 10 is a data transmission procedure sketch map under the CELL_FACH state according to the method for the invention.
Embodiment
To combine accompanying drawing to specify embodiments of the invention below.
Fig. 7 is the flow chart that illustrates according to setting up the synchronous method of fast uplink under the non-CELL _ DCH status of the present invention.With reference to Fig. 7; Under non-CELL _ DCH status, setting up the synchronous method of fast uplink may further comprise the steps: step S702; Before after the high speed-DSCH Downlink Shared Channel of subscriber equipment transmits the one period dead time of having paused, recovering transmission, the base station notifying user equipment is set up uplink synchronous; And step S704, in response to the notice of base station, subscriber equipment is judged initiation uplink synchronous process when oneself being in desynchronizing state really, replys the confirmation of synchronization signaling to the base station after the completion uplink synchronous; Subscriber equipment is judged when laying oneself open to synchronous regime, directly to base station answer confirmation of synchronization signaling.After the base station confirms that subscriber equipment is in the uplink synchronous state, subscriber equipment is recovered the transmission of high speed-DSCH Downlink Shared Channel.
The step that the base station notifying user equipment is set up uplink synchronous may further comprise the steps: uplink synchronous is set up through the physical layer signaling notifying user equipment in the base station.Physical layer signaling comprises the indication of synchronous foundation order and the high speed descending sharing channel-Radio Network Temporary Identifier of subscriber equipment at least.
Wherein, the dead time keeps thresholding greater than uplink synchronous, this thresholding be user equipment side keep uplink synchronous blanking time of patient maximum simultaneous bias order.This uplink synchronous keeps thresholding by high level configuration or agreement agreement.
The physical layer signaling that the base station is set up notice synchronously is carried on the high speed-shared control channel.
Step S704 may further comprise the steps: after subscriber equipment receives physical layer signaling; Need judge; When judgement oneself is in desynchronizing state really; Send uplink synchronous code and receive the affirmation information on the physical access channel, after receiving confirmation, subscriber equipment utilizes physical layer control channel 1 to send the confirmation of synchronization signaling to the base station; Subscriber equipment is judged when laying oneself open to synchronous regime, utilizes physical layer control channel 2 directly to reply the confirmation of synchronization signaling to the base station.And after receiving the affirmation signaling, scheduling and the transmission to the high speed-DSCH Downlink Shared Channel of subscriber equipment recovered in the base station.
Physical layer control channel 1 using system Physical Random Access Channel resource is transmitted, and the content in the confirmation of synchronization signaling comprises that at least synchronous foundation accomplishes the relevant indication and the high speed descending sharing channel-Radio Network Temporary Identifier of subscriber equipment.
Physical layer control channel 2 uses at a high speed-shares indicating channel resource to transmit, and the control channel at the synchronization notice order place of this channel and base station is corresponding one by one, and has definite timing relationship.
The CELL_FACH enhancement techniques also will be incorporated into the TD-SCDMA system, be that example is introduced the present invention with the TD-SCDMA system below.
Fig. 8 is a flow chart of setting up the synchronous method of fast uplink under the non-cell private channel status that illustrates according to the embodiment of the invention.In this embodiment, because TD-SCDMA is a synchro system, when introducing a new business characteristic, all need considers how to carry out uplink synchronous and keep; Losing when synchronous, how to set up uplink synchronous fast.When the HS-DSCH channel was introduced the CELL_FACH state, HS-SCCH and HS-SICH channel itself can constitute a closed loop synchro system, but owing to lack the reference of other dedicated channels, this synchro system can't adapt to the professional application scenarios of discontinuity.The present invention is based on as above problem, a kind of creating a mechanism synchronously fast under the CELL_FACH state be provided, be applied in the CELL_FACH enhancement techniques, set up the synchronous method of fast uplink under a kind of non-CELL _ DCH state, may further comprise the steps:
Step S802; The HS-DSCH transmission of UE recovers transmission after pause after a while before; Node B notifies this UE by physical layer signaling; This physical layer signaling is carried on the HS-SCCH channel, comprises the indication of synchronous foundation order, the sign H-RNTI information of subscriber equipment in the physical layer signaling content at least;
Step S804, UE judge when oneself being in desynchronizing state really after receiving said signaling, initiation uplink synchronous process, and after the completion uplink synchronous, subscriber equipment sends the confirmation of synchronization signaling to the base station on system physical accidental access channel; Subscriber equipment judges when laying oneself open to synchronous regime that to base station answer confirmation of synchronization signaling, this HS-SICH channel and synchronization notice are ordered the HS-SCCH channel-associated at place on the HS-SICH channel.And after receiving the affirmation signaling, scheduling and the transmission to the high speed-DSCH Downlink Shared Channel of subscriber equipment recovered in the base station.
Wherein, among the step S802, the dead time more than or equal to keep uplink synchronous maximum break period (be called uplink synchronous and keep thresholding) of patient SS order; This uplink synchronous keeps thresholding by high level configuration or agreement agreement;
Wherein UE judges that the method that lays oneself open to desynchronizing state is:
The last uplink of current distance keep thresholding interval greater than uplink synchronous.
UE judges that the method that lays oneself open to synchronous regime is:
The time interval of the last uplink of current distance keeps thresholding smaller or equal to uplink synchronous.
Step S804, the uplink synchronous process when the UE judgement lays oneself open to desynchronizing state may further comprise the steps:
Step S804-21, UE sends uplink synchronous code and receives the FPACH channel by existing uplink synchronous process;
Step S804-41, receive that FPACH confirms after, UE sends the confirmation of synchronization signaling through the system physical accidental access channel resource to Node B;
In step S804-4, said confirmation of synchronization signaling comprises synchronous foundation at least and accomplishes relevant indication, the sign H-RNTI information of subscriber equipment;
Among the step S804, the process when the UE judgement lays oneself open to synchronous regime may further comprise the steps:
UE selects and the corresponding HS-SICH channel of HS-SCCH channel of setting up the notification place synchronously, and behind the timing slip of confirming on this HS-SICH channel the feeding back ACK signaling.
In the method for the invention, when Node B recovered transmission at the downlink data of UE, with the downlink data buffer memory, for the UE uplink synchronous is set aside some time, follow-up like this when carrying out the HS-DSCH transmission, up channel can obtain synchronization shift information, gets into synchronous regime.Because the CELL_FACH state is towards non-real-time service, the uplink synchronous process that data are recovered before the transmission is little to the service impact of UE, thereby the method for the invention can solve existing issue.
In fact the CELL_FACH enhancing comprises the enhancing to a plurality of states such as CELL_FACH, CELL_PCH, URA_PCH, and present embodiment will be discussed to the CELL_FACH state.In this embodiment, still describe with reference to Fig. 8.
Step S802, the HS-DSCH transmission of UE recovers transmission after pause after a while before, Node B notifies this UE through physical layer signaling.Wherein, shorter when the dead time, when being not enough to cause uplink loss, Node B will directly recover HS-DSCH scheduling and the transfer of data to this UE; Surpass uplink synchronous maintenance thresholding when the dead time, promptly the UE side is kept the patient maximum simultaneous bias order of uplink synchronous institute during blanking time, and Node B need notify UE to set up uplink synchronous before resume data transmission.Wherein, uplink synchronous keeps thresholding to be Node B configuration by the network high level, and UE is given in configuration simultaneously, also can in agreement, arrange.In existing physical layer specification, uplink synchronous sense cycle length is 160ms, and it is 80ms that uplink synchronous keeps the thresholding general recommendations.
The physical layer signaling that Node B sends is used to notify UE to set up uplink synchronous, and this signaling does not exist in existing system.In order farthest to reduce influence to system; This physical layer signaling can pass through the HS-SCCH Channel Transmission; Whether the receive mode that UE presses HS-SCCH in the existing system receives, discern this HS-SCCH through the H-RNTI in CRC (CRC) field in the detection HS-SCCH channel and send out to oneself.Existing HS-SCCH signaling content is as shown in Figure 1, and this is once common HS-SCCH transmission or sets up order synchronously to need a special field indication.A kind of method is: the code channel field is carried out special filling in.In existing system, in the code channel field of 8 bits, preceding 4 bits are represented position, initial code road, afterwards 4 bits are represented position, stop code road, and preceding 4 bit values must be smaller or equal to back 4 bits, such as 00000000 expression HS-PDSCH channel occupancy, 0 number road; 00000010 expression takies totally 3 code channels No. 0 to No. 2.During 4 bit values, existing UE can think that this is an exceptional signaling, can abandon to current 4 bit values greater than the back; And we just in time can utilize this point to expand, that is, current 4 bits are greater than the back during 4 bits; It is a specific information field that UE should resolve to this; Further, system can represent to set up synchronously order to special bit pattern of code channel field agreement, such as 11110000; The H-RNTI information of in cyclic redundancy check field, still carrying UE is so that UE receives; All the other fields are as keeping the position, and can all fill out is 0 or 1.Like Fig. 9 is that on HS-SCCH, carrying described in the present invention set up the signaling content of ordering synchronously.Preceding 4 bit values can keep as other expansion greater than back other bit pattern during 4 bit values; And preceding 4 bits are smaller or equal to the back during 4 bits, and UE should think that this is a common HS-DSCH control channel.
After step S804, UE received and set up order synchronously, UE at first will make a decision, and when judgement oneself is in desynchronizing state really, initiated the uplink synchronous process; Subscriber equipment is judged when laying oneself open to synchronous regime, utilizes physical layer control channel directly to reply the confirmation of synchronization signaling to the base station.Node B confirms after UE is in the uplink synchronous state this UE to be recovered the HS-DSCH transmission.
Under the CELL_FACH state, when Node B dispatches certain H-RNTI user, and do not know this user's specifying information, more can't be associated with this user's uplink.For Node B, when this H-RNTI user did not have downlink transfer in a period of time, pause had taken place just to think that this user is transmitted.And, possibly in the time that downlink transfer is paused, have uplink fully in the UE side, in case uplink is arranged, UE will initiate uplink synchronous automatically, gets into synchronous regime.Thereby after Node B sent synchronous foundation notice, UE need judge that when judgement self was in desynchronizing state really, UE just need initiate the uplink synchronous process.UE judges that the foundation of own step-out is, the last transmission range has surpassed uplink synchronous now and kept thresholding.The uplink here is included in the transmission of Physical Random Access Channel, also possibly comprise the transmission that strengthens dedicated channel (E-DCH).
At this moment, UE should use the uplink synchronous process of existing system to select suitable uplink synchronous code, in the UpPCH subchannel that allows, sends uplink synchronous code and receives the affirmation information (in detail referring to 3GPP TS25.224 agreement) on the FPACH.Between UE and Node B, need an affirmation mechanism, make Node B know whether the synchronizing process of UE is accomplished, so that Node B recovers the transfer of data to this UE as early as possible.A kind of method is that UE passes through physical layer signaling explicit notification Node B uplink synchronous foundation completion.Because Node B need discern concrete user, carries the H-RNTI information of UE in this physical layer signaling at least.The bearing mode of this physical layer signaling can be used for reference E-RUCCH (enhanced random access channel) channel in the existing HSUPA system.The E-RUCCH channel is a physical layer control channel; Carry dispatch request information; With the random access resource in the traditional P RACH channel sharing sub-district, make that through dividing different uplink synchronous codes Node B can distinguish conventional P RACH access or E-RUCCH inserts (in detail referring to 3GPP TS25.224 agreement).Carry the RACH transmission channel on the PRACH channel; This transmission channel ends at CRNC (master control radio network controller); Node B need not resolve data wherein after receiving the PRACH channel, directly gives RNC (radio network controller) through Iub mouth (interface between a kind of Node B and the RNC) Frame Protocol with the data forwarding that receives; E-RUCCH channel bearing physical layer control command, Node B need resolve signaling content wherein.In order to reduce influence, can on the E-RUCCH channel, carry to set up synchronously and accomplish signaling system.Existing E-RUCCH channel is as shown in Figure 6; Need clearly identify so that Node B discerns this to E-RUCCH equally be that order is accomplished in a dispatch request or a foundation synchronously; A method the simplest is to distinguish through the crc field of E-RUCCH; When the CRC of the E-RUCCH that receives as Node B is common CRC coding, think that this is a dispatch request; (1 becomes 0 when the bit polarity inversion among the CRC; 0 becomes 1), think to set up synchronously for one and accomplish order.Accomplish order for synchronous foundation, the H-RNTI information that should fill in UE in last information field among the E-RUCCH " UE sign ", all the other information fields can be filled out and be complete 0 or complete 1; Another kind method also can utilize E-RUCCH to go up the special mode of filling in of existing field; Make Node B know that this is a special signaling; Such as " buffer state field " filled out is 0, and " highest priority logical channel data to be transferred amount " if 4 bits in have one just can represent that this is a special signaling for non-0.Utilize remaining bit again, expand the implication of special signaling such as " highest priority logical channel number ", in this example as long as utilize a kind of value wherein just can represent to have set up the completion signaling synchronously.
When the UE judgement oneself also is in synchronous regime (; The last uplink distance keeps thresholding smaller or equal to uplink synchronous now at interval); UE only needs to carry out the HARQ feedback as correctly receiving a HS-PDSCH Frame under the CELL_DCH state; That is, behind the fixing timing slip with HS-SICH channel that the HS-SCCH that sets up the notification place synchronously is associated on reply ACK (affirmation).Node B receives ACK, just representes that UE is in synchronous regime.Wherein, the timing mechanism during the HS-DSCH transmission is identical under the timing mechanism between HS-SCCH and the HS-SICH and the CELL_DCH state.
Node B begins to recover the scheduling to this UE after in a single day receiving the synchronous foundation order of UE, is sending the HS-SCCH signaling on the suitable time and on the sequential of system's regulation, is sending HS-PDSCH.
Send for fear of the synchronous foundation order of Node B and to lose or the confirmation of synchronization signaling of UE is lost; System need be provided with one and set up timer T synchronously; Node B sends synchronous foundation order back and starts timer T on HS-SCCH; If the overtime confirmation of synchronization signaling of also not receiving UE of T, Node B needs to initiate to set up synchronously again notification procedure.When UE reported the confirmation of synchronization signaling through HS-SICH, the fixed time interval between HS-SCCH and the HS-SICH was confirmable, and UE is when reporting confirmation of synchronization through E-RUCCH, rely on up access load condition in the sub-district and decided.Thereby the value of timer T will be confirmed according to the average collision probability and the average time of fixed time interval between HS-SCCH and the HS-SICH and uplink random access.
Figure 10 shows a procedure chart (transmission of the upstream data that do not draw) of the descending HS-DSCH transmission of CELL_FACH state.Wherein the part of 1002 and 1006 indications is transmission of normal HS-DSCH, and it is consistent that the HS-DSCH under the sequential relationship between HS-SCCH and HS-PDSCH, HS-PDSCH and the HS-SICH and the existing system CELL_DCH state sends.There is a uplink and downlink service pause time in the interprocedual of 1002 and 1006 indications; Initiate the 1006 said Cheng Qians of crossing at Node B; Node B will judge when this dead time will cause the UE uplink loss; According to thought according to the invention, Node B should notify UE to initiate uplink synchronous, and this process is like 1004 indications:
1004-2:Node B sends through the HS-SCCH channel and sets up order synchronously, and wherein the CRC of HS-SCCH partly carries in the H-RNTI information, signaling content of this UE in the code channel field to fill in to indicate this to be one by the bit pattern of agreement and sets up order synchronously; Timer T is set up in Node B startup synchronously.
1004-4:UE judges when being in desynchronizing state really after receiving synchronous foundation order, presses the flow process of existing system and initiates the uplink synchronous access;
1004-6:Node B confirms detected synchronous code, sends confirmation through the FPACH channel;
1004-8:UE receives that Node B is behind the confirmation of synchronization of sending on the FPACH channel; Select suitable RACH on system's sequential that access process is arranged at random, to send E-RUCCH channel (with reference to 3GPP TS25.224 agreement); Wherein in the UE id field, fill in the H-RNTI information of oneself, in crc field, carry out sending after the bit polarity inversion.
In the above-described embodiments; Through setting up the synchronous method of fast uplink under the non-CELL _ DCH status; Solve problem how to set up uplink synchronous when recovering transmission behind the service pause under the CELL_FACH state fast; Can adapt to professional intermittent characteristics under the CELL_FACH state, the HS-DSCH transmission after the recovery can be carried out normally.
More than be merely 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 changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (13)
1. under non-CELL _ DCH status, set up the synchronous method of fast uplink for one kind, it is characterized in that, may further comprise the steps:
Step S702, before after high speed-DSCH Downlink Shared Channel of subscriber equipment transmits the one period dead time of having paused, recovering to transmit, the base station notifies said subscriber equipment to set up uplink synchronous; And
Step S704, in response to the notice of said base station, said subscriber equipment judges and initiates the uplink synchronous process when laying oneself open to desynchronizing state, replys the confirmation of synchronization signaling to the base station after accomplishing said uplink synchronous; Subscriber equipment is judged when laying oneself open to synchronous regime, directly to base station answer confirmation of synchronization signaling.
2. method according to claim 1 is characterized in that, the step that said base station notifies said subscriber equipment to set up uplink synchronous may further comprise the steps:
Said base station notifies said subscriber equipment to set up said uplink synchronous through physical layer signaling.
3. method according to claim 2 is characterized in that the said dead time keeps thresholding greater than uplink synchronous, promptly user equipment side keep uplink synchronous transmission intercal time of patient maximum simultaneous bias order.
4. method according to claim 2 is characterized in that, the content of said physical layer signaling comprises the indication of synchronous foundation order and the high speed descending sharing channel-Radio Network Temporary Identifier of said subscriber equipment at least.
5. according to claim 2 or 3 described methods, it is characterized in that said physical layer signaling is carried on the high speed-shared control channel.
6. method according to claim 1 is characterized in that, the operation after subscriber equipment judgement self step-out may further comprise the steps:
Said subscriber equipment sends uplink synchronous code and receives the affirmation information on the physical access channel;
After receiving said confirmation, said subscriber equipment utilizes physical layer control signaling to send the confirmation of synchronization signaling to said base station; And
After receiving said affirmation signaling, scheduling and the transmission to the high speed-DSCH Downlink Shared Channel of said subscriber equipment recovered in said base station.
7. method according to claim 6 is characterized in that, the content of said confirmation of synchronization signaling comprises that at least synchronous foundation accomplishes the relevant indication and the high speed descending sharing channel-Radio Network Temporary Identifier of said subscriber equipment.
8. according to claim 6 or 7 described methods, it is characterized in that the said physical layer control of using system Physical Random Access Channel resource transmission signaling.
9. method according to claim 1 is characterized in that, subscriber equipment judges that the operation after self being in synchronously may further comprise the steps:
Said subscriber equipment sends the confirmation of synchronization signaling through physical layer control signaling to said base station; And
After receiving said affirmation signaling, scheduling and the transmission to the high speed-DSCH Downlink Shared Channel of said subscriber equipment recovered in said base station.
10. method according to claim 9 is characterized in that, said confirmation of synchronization signaling comprises synchronous foundation at least and accomplishes relevant indication.
11., it is characterized in that the indicating channel transmission is used at a high speed-shared to said confirmation of synchronization signaling according to claim 9 or 10 described methods.
12. method according to claim 1 is characterized in that, subscriber equipment judges that the foundation that self is in desynchronizing state is, the last uplink distance keeps thresholding greater than said uplink synchronous now at interval.
13., it is characterized in that said uplink synchronous keeps thresholding to be arranged by agreement according to claim 3 or 12 described methods, perhaps by the high-rise configuration of network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100650112A CN101478817B (en) | 2008-01-03 | 2008-01-03 | Method for establishing fast uplink synchronization under non-CELL_DCH status |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100650112A CN101478817B (en) | 2008-01-03 | 2008-01-03 | Method for establishing fast uplink synchronization under non-CELL_DCH status |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101478817A CN101478817A (en) | 2009-07-08 |
| CN101478817B true CN101478817B (en) | 2012-05-23 |
Family
ID=40839436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100650112A Expired - Fee Related CN101478817B (en) | 2008-01-03 | 2008-01-03 | Method for establishing fast uplink synchronization under non-CELL_DCH status |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101478817B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101594672B (en) * | 2008-05-30 | 2012-02-01 | 电信科学技术研究院 | Method, system and device for maintaining uplink synchronization and method for sending data |
| US9307415B2 (en) | 2011-07-20 | 2016-04-05 | Broadcom Corporation | Methods and apparatuses for provision of a downlink synchronization group during discontinuous transmission in an unlicensed band |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7068629B1 (en) * | 1998-09-03 | 2006-06-27 | Siemens Aktiengesellschaft | Method and radio communication system for synchronizing subscriber stations |
| CN1859034A (en) * | 2005-09-02 | 2006-11-08 | 华为技术有限公司 | Method for up-link breaking step for soft switch period |
| EP1550275B1 (en) * | 2002-10-07 | 2006-12-13 | Golden Bridge Technology, Inc. | Enhanced uplink packet transfer |
-
2008
- 2008-01-03 CN CN2008100650112A patent/CN101478817B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7068629B1 (en) * | 1998-09-03 | 2006-06-27 | Siemens Aktiengesellschaft | Method and radio communication system for synchronizing subscriber stations |
| EP1550275B1 (en) * | 2002-10-07 | 2006-12-13 | Golden Bridge Technology, Inc. | Enhanced uplink packet transfer |
| CN1859034A (en) * | 2005-09-02 | 2006-11-08 | 华为技术有限公司 | Method for up-link breaking step for soft switch period |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101478817A (en) | 2009-07-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2119051B1 (en) | Method and apparatus for detecting contention during random access procedure in a mobile communication system | |
| JP4759088B2 (en) | Communication device and communication method | |
| US8811336B2 (en) | Method of performing handover and controlling thereof in a mobile communication system | |
| USRE44283E1 (en) | Method and procedures for unsynchronized, synchronized, and synchronization stand by communications in E-UTRA systems | |
| JP4550138B2 (en) | Change wireless access settings between the device and the network | |
| TWI423605B (en) | Device and method for communications, communications system, and article of manufacture comprising a non-transitory computer-readable medium | |
| CN106105329A (en) | The network of the machine type communication user equipment in mobile communication system selects and accidental access method and device | |
| CN101690374A (en) | Method of redirection of uplink access and method of controlling random access in mobile communication system | |
| CN102740345A (en) | Radio link failure detection procedures in long term evolution uplink and downlink and apparatus therefor | |
| KR20070121513A (en) | Uplink method of mobile communication system | |
| KR20080042797A (en) | Channel transmission device and channel transmission method | |
| CN101779393A (en) | Downlink reception indication method in packet based mobile communication system | |
| CN101998469A (en) | Wireless link fault handling method based on carrier aggregation and user equipment | |
| CN101478786A (en) | Method, system and apparatus for uploading feedback information | |
| CN101123467A (en) | A method and device for enhancing random access | |
| KR100992780B1 (en) | How to perform a random access procedure | |
| US20100110953A1 (en) | Method for transmitting phasing information and phasing method in mobile communication system | |
| CN101626267B (en) | Method and device for synchronous detection | |
| CN101478817B (en) | Method for establishing fast uplink synchronization under non-CELL_DCH status | |
| CN101873682B (en) | Realizing method , system and device of high-speed uplink grouping access service | |
| CN101400151B (en) | Method for establishing fast uplink synchronization under non-CELL_DCH status | |
| CN101568176B (en) | Method for realizing uplink synchronization | |
| CN101860906B (en) | Method and system for determining data transmission format in state transfer process | |
| KR101417058B1 (en) | METHOD AND APPARATUS FOR SETTING TRANSMISSION / RECEIVE TIME IN A MOBILE COMMUNICATION SYSTEM USING ADVANCED REVERSE SERVICE | |
| JP6446710B2 (en) | Base station apparatus, terminal apparatus, wireless communication method, and integrated circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120523 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |